Method and device support cylinder engraving

 

(57) Abstract:

The invention can be used in engraving machines to provide automatic loading and unloading of the engraving cylinder. Engraving machine includes a cylinder, front and tailstock, carriage moving parallel to the axis of the cylinder, the engraving head, the drive unit for providing rotation of the cylinder, and the controller. The front and rear wise old is attached to a secondary drive unit, enabling them to move. A controller associated with the drive units and carriage of the conditions of receiving at least one parameter of the vehicle and included in the additional drive unit. The installation of the cylinder is produced automatically taking into account the mentioned parameter. 3 S. and 31 C.p. f-crystals, 6 ill.

The present invention relates to the creation of the engraving machine, and more particularly it is concerned with the creation of a support cylinder, and method of support cylinder, on which is engraved in the engraving machine.

The basic principle of Electromechanical engraving plate cylinder gravure printing provides for rotation of the plate cylinder while commissioning tool with electricenergy cylinder is typically used in gravure printing machine belt type for printing on paper, as well as plastic or metal film material. Other than printing of Newspapers and magazines, engraving cylinders can also be used for direct or indirect seals (gaskets) fabrics, adhesives, printing of packaging materials for packaging products and printing the picture of the tree structure for the manufacture of wall panels, flooring and other surface coatings.

In the process of gravure printing engraving cylinder covered with paint, and the doctor blade removes excess ink from the surface of the cylinder so that only the raster engraving cells contain the paint, which is then transferred to the material on which a print is produced. For receipt printing high quality very high accuracy placement or location of cells on the surface of the cylinder, usually with an accuracy of 1 or 2 microns within a specific location. The depth of the engraving raster cells must also be precisely controlled, since this depth determines the quantity when printing inks, which, in turn, determines, for example, the number of gradations (semitones) of gray in a black-and-white printing. When printing the amount transferred to the paper and colors to create different hues (colors) of various colors. A small change in the desired amount of paint not only affects the brightness of the color, but also, more importantly, to create the desired color tones.

There is a method of engraving a cylinder in which the cylinder is installed in the position of the engraving engraving machine controller and produce the engraving pattern in areas of the engraving cylinder using the engraving tool (Petronas L. B., Rosenfeld, P. J. Equipment for making printing plates, M.: Art, 1962, S. 496-499) (1).

Famous engraving machine, containing on the basis of the cylinder, the front and rear headstock designed to support the cylinder with capability of rotation located on either side of him, a carriage mounted on the base for movement parallel to the axis of the cylinder, mounted on the carriage engraving head, the actuator for bringing the rotation of the cylinder when it is placed between the front and rear pasterns and the controller [1].

The problem is known engraving machine is the need for manual loading of the cylinder. Due to the large weight and size of cylinder required a lot of time for the proper selection polarisavenue made adjustable tailstock before as in the engraving machine could be installed cylinders of different lengths. Another problem is that the operator must manually adjust the engraving head for cylinders of different diameters.

Thus, from the specified becomes clear need to create a method and device to facilitate the loading cylinder engraving machine for installation of the cylinder so that it was properly centered and mounted on an axis between the front head and rear head engraving machine.

The objective of the present invention is to create an unattended installation of the cylinder in the position of the engraving engraving machines and engraving, providing elimination of the need for accurate installation of the cylinder by the operator.

Another object of the invention is the creation of an engraving machine that is able to perceive from the controller multiple installation options, including the length of the cylinder, its diameter, the position of the reference cliché (picture) and engraving characteristics of the head, while reducing or eliminating the need for manual installation (options) operator.

Itoi engraving machines, gravure printing, containing the front of the headstock, tailstock, one engraving head and the bearings of the cylinder.

In Fig. 2 shows a fragmentary view in plan engraving machine of Fig. 1, showing details of one of the struts of the cylinder.

In Fig. 3 shows another view in plan engraving machine, showing the cylinder, supported by columns of the cylinder.

In Fig. 4 depicts another view in plan engraving machine, showing the cylinder supported rotatably front and rear pasterns after bearing cylinder have been allocated.

In Fig. 5 shows a partial cross-section showing details of the support cylinder and the socket support.

In Fig. 6 depicts a top view of one of the pillars of the cylinder, showing the details of the socket support.

In Fig. 1 shows a General view in perspective of the preemptive variant of implementation of the engraving machine, which is designated in General position 10. In the described embodiment, the engraving machine 10 is a machine gravure printing, however, the invention is also suitable for other types of engraving machines. Engraving machine 10 may have surrounding constructive sliding safety cover, which is some 18, which are mounted slidable on the site (the sled) 20 so that the front of the headstock 16 and the tailstock 18 can be moved toward each other and in the opposite direction. For this purpose engraving machine 10 includes a drive unit in the first drive motor 46 and the second drive motor 48, causing, respectively, the front of the headstock 16 and tailstock 18, in the direction towards each other or away from each other. For example, the drive motors can set the front of the headstock 16 and tailstock 18 at a distance, as shown in Fig. 2, or in the position of the support cylinder, as shown in Fig. 1. The drive motors can be activated selectively for independent or simultaneous operation of the front headstock 16 and tailstock 18. Although it is not shown in the drawings, may be used a single drive motor with a single screw (not shown) having a reverse threaded parts, which can move spindle stock 16 and the tailstock 18 simultaneously towards each other or away from each other, rotation of the lead screw. The ability to move as the front headstock 16 and tailstock 18 allows zagruzki rotation axis engraving machine. However, it should be borne in mind that can be used stationary spindle stock 16 and the tailstock 18, moving, respectively, the rear head 18 or the front head 16, in the case if, for example, the loading mechanism of the cylinder (not shown) carries out the loading of the cylinder 14 by moving it in a direction which is essentially parallel to the axis of rotation of the engraving machine. As is best seen in Fig. 2-4, the front of the headstock 16 and the tailstock 18 contain, respectively, the reference axis 16a and the reference axis 18a. Each of the reference axes 16a and 18a has an end conical 16b and 18b, respectively. The cylinder 14 has a front end 14a and the rear end 14b, each of which has a receiving hole 19 (Fig.2) to enter in his respective ends 16b and 18b. As best seen in Fig. 2-4, the receiving hole 19 has a cross section of a tapered shape that allows owing to insert the ends 16b and 18b.

Although not shown, in the case where it is necessary to make the engraving on the cylinder with the axes (not shown), as spindle stock 16 and the tailstock 18 must contain the gripper or Chuck (not shown) for rotary support cylinder in position grawerowanie or engraving cutter (not shown) for engraving on the surface 13 of cylinder 14. In the described embodiment of the invention, the surface 13 is mostly copper coating of this type, which is used in gravure printing. Engraving head 22 mounted slidable on the carriage 24 so that the third means of the actuator or the third drive motor 21 can lead engraving head 22 in the direction of the cylinder 14 and in the direction of him, and this area is mainly radially relative to the Central axis of the cylinder 14. The carriage 24 is also mounted for sliding relative to the base 12 so that it has the ability to overlap (intersect) full surface 13 of cylinder 14 in the direction of the double arrow 26 in Fig. 1, a direction mainly parallel to the axis of the cylinder 14. Engraving machine 10 also includes a lead screw (not shown) and drive motors (not shown) to move the carriage 24 in the direction of the double arrow 26.

Engraving machine includes a controller 17 (Fig.1), which controls the operation of the engraving machine 10, and also controls the operation of all drive motors, such as drive motors 21, 46 and 48. Mentioned here drive motors 21, s 10.

Engraving machine 10 also includes a drive unit in the form of a drive motor 28 for driving the rotation of the body support 16a, cylinder 14 and organ support 18a. The drive motor 28 is connected to a managed controller 17.

Engraving machine 10 further comprises a support tool or at least one support cylinder 30 to the support cylinder 14 between the front of the headstock 16 and the rear head 18, for example, during loading and unloading (cylinder). Bearing cylinder 30 includes a support element 34, which has a first end 34a is fixed in a known manner in the base 12, for example, by welding. The second end 34b of the support element 34 has a support slot 36, in which is included, and on which rests the cylinder 14. In the described embodiment of the invention, the supporting element 30 is a telescopic rod, in which the second end 34b has the ability to vdvinut'sâ and to move relative to the specified first end 34a. For this purpose, each support cylinder 30 also includes a drive unit 32, which is connected to the controller 17 and comprises a gear-screw Assembly (not shown) for movement (extension and dvizhenia) anchor slots 36 in the direction of the position of the engraving 15 and from aromasine support cylinder 30 in the position of the support, it is shown in Fig. 2, resulting in the support slot 36 receives the support cylinder 14 in position engraving 15, for example, when the cylinder 14 is loaded for the implementation of the engraving. As described below, the controller 17 further connects the drive unit 32 to the source of energy for removal of a support cylinder 30 and the bearing socket in stenothoe the position shown in Fig. 4, for example, after the reference axis 16a and 18a of the front headstock 16 and tailstock 18 engages and began to support the cylinder 14.

As best seen in Fig. 5 and 6, the anchor socket 36 includes a support lever 40, which is installed with the possibility of rotation of the rollers 38 and 39. The rollers 38 are installed in pairs on a roller node 45. Each roller node 45 is installed with the possibility of rotation about the axis 43 (Fig. 5), which is connected with one of the reference arm 40. As is best seen in Fig. 5, each roller Assembly 45 can be rotated about its respective axis 43. Each of the roller node 45 is automatic and can be rotated, allowing you to set in the engraving machine, the number of cylinders with different diameters.

The axis of each roller 38 in generally perpendicular to the axis of qi the BKA 16 and the tailstock 18 capture and release the cylinder 14. Many of rollers 38 facilitate the maintenance of the cylinder 14, as its Central axis is mainly parallel to the Central axis of each of the reference axes 16a and 18a of the front headstock 16 and tailstock 18, respectively.

It should be noted that the rollers 39 facilitate the direction and the centering cylinder 14 between the front of the headstock 16 and the rear head 18, thereby eliminating lateral displacement when loading cylinder 14 in the engraving machine 10 from above. In the described example, the rollers 38 and 39 are made of composite material. It should also be noted that the supporting socket 36 has the ability to support the cylinders 14 different weight with different lengths and diameters.

Although it is not shown in the drawings, engraving machine 10 can contain a variety of brushes (not shown) located in working relation with the rollers 38 and 39. The function of such brushes is cleaning the rollers and maintain surfaces free from contamination by extraneous material, such as copper shavings. This prevents the application of the engraving machine unwanted scratches on the surface 13 of cylinder 14.

Engraving machine 10 also includes a first touch tools or sensors 42 that are connected to the s to measure, for example, the position of the surface 13 of cylinder 14. The sensors 42 can also measure the position of the ends 14a and 14b of the cylinder 14.

Engraving machine 10 also includes a second sensory means or sensors 44, which is connected to the controller 17 and combined with the front headstock 16 and the rear head 18 for detecting the proximity of the carriage 24 relative to the front of the headstock 16 and tailstock 18. In the described example, the first and second sensors 42 and 44 prevent the collision of the carriage 24 with the front head 16 or the rear head 18. Next will be described a method of loading and unloading of the cylinder 14 in the engraving machine 10.

When you need to load (install) cylinder 14 in the engraving machine 10, the controller 17 supplies power to the first and second drive motors 46 and 48 to move, respectively, the front headstock 16 and tailstock 18 in the loading position, shown in Fig. 2. It should be noted that the controller 17 can be programmed on the size of the cylinder 14, such as length and diameter. The controller 17 also supplies power to the actuator 32 of a support cylinder 30 for telescopic extension of the support element 34 so that the supporting socket 36 is mounted operatively in position engraving 15, as show the echoes 14, controls the actuator 32 so that the base of the socket 36 in such position that, when the cylinder 14 is supported by the support cylinder 30, the ends 16b and 18b are mostly in operative communication or aligned (aligned) relative to the receiving holes 19, respectively, at the first end 14a and the second end 14b. After spindle stock 16 and the tailstock 18 is translated in the open (extended) position, shown in Fig. 2, and the support cylinder 30 are in the position of the support cylinder 14 is lowered into the anchor socket 36. As mentioned above, many of rollers 39 facilitate the selection of the position and alignment of the cylinder 14 on the roller nodes 45 and their respective rollers 38.

After the cylinder 14 is installed in the bearing socket 36 of the supports 30 of the cylinder, the controller 17 can apply power to the first and second actuators 46 and 48 to move the support elements 16a and 18a in the direction towards the respective ends 14a and 14b. Spindle stock 16 and the tailstock 18 is moved in the direction of the respective ends of the cylinder 14a and 14a, while the ends 16a and 18a will not come into contact with receiving holes 19 of the ends 14a and 14b. After the cylinder 14 is held between the ends 16a and 18a of the front headstock 16 and tailstock 18, respectively, contacts the label, the cylinder 14 is supported between the front of the headstock 16 and the rear head 18 to rotate, so that when the controller 17 of the drive motor 28 of the cylinder 14 starts to rotate, for example, clockwise. Then, the controller 17 includes a third drive motor 19 to move the carriage 24 and the engraving head 22, respectively, of the operational (working) position relative to surface 13 of cylinder 14. It should be noted that the controller 17 uses data from sensors 42 and 44, which measure the relative position of the cylinder 14 and the engraving head 22. The sensors 42 and 44 can also measure the position of the ends 14a and 14b in order to prevent a collision of the carriage 24 with the front head 16 or the rear head 18. The sensors 42 and 44 also allow the controller 17 to place (install) engraving head 22 near the center of the cylinder 14, which, in turn, allows the adjustment of the engraving machine 10 to longitudinal variations in the length of the cylinder 14 after the cylinder 14 has been installed rotatably in the engraving machine 10. This enables the engraving of the image (not shown) on the surface 13 in the center of the cylinder 14. The sensors 42 and 44 can also make Edna head 16 or the rear head 18.

After the cylinder 14 is properly installed in the position of the engraving 15, the position of the ends of the cylinder 14a and 14b is measured by sensors 42 and 44. After that engraved check pattern (not shown) in the location is usually determined by the controller 17 or the host computer (not shown). Control drawing (cliche) is a small figure with full or partial raster cells (not shown), whose characteristics correspond to the raster cells that should be engraved on the surface of the cylinder 13. Control the drawing is cut at a location on the surface 13, which will not be used for engraving the image.

If the results of the engraving control figure unsatisfactory, then adjustments are made and cut additional control pattern. This process is repeated until a successful execution of the control figure. In the described example, the controller 17 supplies power to the drive motor 28 to drive the rotation of the cylinder 14. After this, the controller 17 moves the carriage 24 to move the engraving head 22 in the operating position relative to the surface 13 of cylinder 14 and simultaneously delivers: what hnestly 13 of cylinder 14, what is engraved the desired image, which contains a number of raster cells of a certain depth (not shown) on the surface 13 of cylinder 14. The cylinder 14 is rotated synchronously with the oscillating movement of the engraving cutter (not shown), while the device lead screw (not shown) provides the axial displacement of the engraving heads 22 and carriage 24, in such a way that precisely controlled track (not shown) is formed on the surface 13 of the cylinder unit 14.

After engraving, the controller 17 includes a third drive motor 21 for removal from the surface 13 of the engraving head 22. The controller 17 also includes an actuator 32 to move the support cylinder 30 in the reference position shown in Fig. 1 and 2. After this, the controller 17 includes first and second drive motors 46 and 48 for removal of the front headstock 16 and tailstock 18, respectively, as shown in Fig. 3. After this, the cylinder 14 can be removed from the position of the engraving 15 and can be installed and engraving the other cylinder as described above.

In accordance with the present invention provides a method for automatic loading in g is yet the need for operator intervention during the operation of loading and unloading of cylinder 14. The invention can be used to fully automate the process of engraving or, alternatively, the invention can be used in semi-automatic process in which the operator manually controls the operation of the engraving machine 10. In the proposed method provides a means for automatically loading and alignment of the cylinder 14 at the position of the engraving 15, so that, for example, when the engraving head 22 is in the initial position shown in Fig. 1, it is located basically in the middle between the ends 14a and 14b of the cylinder 14.

Despite what has been described the preferred form of the invention, it should be understood that the invention is not limited to only one kind of its implementation and that specialists may be amended, are not beyond the scope of the following claims. For example, although the invention has been described with reference to gravure printing, it should be borne in mind that it can used with other types of printing, such as laser engraving flexible rollers or in processes such as polishing of the cylinder 14. In addition, the engraving machine 10 can have depending on the necessity to 32 and the first the second and third drive motors 21, 46 and 48 have been described as actuators using electric motors, they can be any suitable actuator, which can perform a similar function. Similarly, despite the fact that the bearing cylinder, and control means 30 have been shown and described as containing the reference element 34 and the support slot 36, it should be understood that it may be used any other suitable means, which is capable of supporting cylinder 14 in position engraving 15 during loading and unloading. The above description of the invention given only as examples and are not restrictive.

1. The method of installation of the cylinder in the position of the engraving engraving machine controller, concluding that the controller enter at least one parameter of the cylinder, and cylinder installation produced automatically taking into account the mentioned parameter of the cylinder.

2. The way in.1, characterized in that the controller enter the length of the cylinder.

3. The method according to p. 1, characterized in that the controller enter the diameter of the cylinder.

4. The method according to any of paragraphs.1 to 3, characterized in that during installation of the cylinder in the position of grami, which enter into engagement with the cylinder to provide support in the position of the engraving.

5. The method according to p. 4, characterized in that the front and rear headstock injected into engagement with the cylinder at the same time.

6. The method according to p. 4, characterized in that the engraving machine supply the first and second drive motors associated respectively with the front and rear pasterns, and the introduction of the latter into engagement with the cylinder is produced by incorporating in the work mentioned first and second drive motors.

7. The method according to p. 6, characterized in that the first and second drive motors include work at the same time.

8. The method according to any of paragraphs.1 to 7, characterized in that the produce is moved to the position of the engraving at least one specified in an engraving machine, a support for supporting the cylinder at the specified position, and the cylinder is placed on said support.

9. The method according to p. 8, wherein moving each foot in position engraving produced taking into account at least one parameter of the cylinder.

10. The method according to p. 9, wherein moving each foot in position of the engraving is done with regard to p is iLink set in position engraving engraving machine controller and produce the engraving pattern in areas of the engraving cylinder using the engraving tool characterized in that the controller programming at least one parameter of the cylinder and install the cylinder in the position of the engraving produced automatically by placing it in a certain position relative to the engraving tool with the specified at least one parameter of the cylinder.

12. The method according to p. 11, characterized in that the controller enter the length of the cylinder.

13. The method according to p. 11, characterized in that the controller enter the diameter of the cylinder.

14. The method according to any of paragraphs.11 to 13, characterized in that during installation of the cylinder in the position of the engraving produces its placement between set forth in the engraving machine, the front and rear pasterns that are injected into engagement with the cylinder to provide support in the position of the engraving.

15. The method according to p. 14, characterized in that the front and rear headstock engraving machines injected into engagement with the cylinder at the same time.

16. The method according to any of paragraphs.14 and 15, characterized in that the engraving machine supply the first and second drive motors associated respectively with the front and rear pasterns, and the introduction of the latter into engagement with the cylinder produce way the different topics the first and second drive motors include work at the same time.

18. The method according to any of paragraphs.11 to 17, characterized in that the produce is moved to the position of the engraving at least one specified in an engraving machine, a support for supporting the cylinder at the specified position, and the cylinder is placed on said support.

19. The method according to p. 18, wherein moving each foot in position engraving produced taking into account at least one parameter of the cylinder.

20. The method according to p. 19, wherein moving each foot in position engraving produced from conditions ensuring automatic installation of the cylinder between the front and rear pasterns are in the position of the engraving.

21. The method according to p. 19, wherein moving each foot in position of the engraving is done with regard to the diameter of the cylinder or its length.

22. The method according to any of paragraphs.18 to 21, characterized in that the movement of each foot in position engraving made from the conditions for installation of the cylinder on the support between the front and rear pasterns before introducing them into engagement with the cylinder to provide support to rotate the second support to ensure pairing her in the position of the engraving with cylinders of different diameters.

24. Engraving machine, containing on the basis of the cylinder, the front and rear headstock designed to support the cylinder with capability of rotation located on either side of him, a carriage mounted on the base for movement parallel to the axis of the cylinder, mounted on the carriage engraving head, the actuator for bringing the rotation of the cylinder when it is placed between the front and rear pasterns and a controller, characterized in that it is provided with an additional drive unit, connected to the front and rear wise old set with the ability to move in the direction of the cylinder located at the position of the engraving, and in the opposite direction, to ensure the move, and the controller associated with the primary and secondary drive units and carriage of the conditions of receiving at least one parameter of the vehicle and included in the additional drive unit to provide automatic installation of the cylinder in the position of the engraving for admission the specified cylinder.

25. Machine under item 24, wherein the additional drive unit made in the form of first and second drive power is tion of the conditions for moving the aforementioned front and rear head in directions approaching each other and remove automatically installed between cylinder at the position of the engraving.

26. Machine under item 24, wherein the additional drive unit is made in the form of a drive motor associated with the controller to control them and connected to the front and rear of the wise old conditions allow them to move in directions approaching each other and removal to install the cylinder in the position of engraving and implementation support with capability of rotation.

27. Machine under item 24, wherein the additional drive unit is made in the form of a drive motor associated with the controller to control them and connected to the front or rear of the wise old conditions for moving the respective headstock in the direction approaching the other grandmother or remove from it to install the cylinder in the position of engraving and implementation support with capability of rotation.

28. Machine according to any one of paragraphs.24 to 27, characterized in that it is provided with at least one support cylinder associated with the controller of the conditions of supply to support the controller of the power supply when it arrives at last at least one parameter of the cylinder when installing ha support in the position of gravirazvedki her power received at a controller of the diameter of the cylinder.

30. Machine according to any one of paragraphs.28 and 29, characterized in that the bearing cylinder is made in the form of a cylinder with a fixed anchor socket.

31. Machine according to any one of paragraphs.28 and 29, characterized in that the bearing cylinder is made in the form of the support element and the associated anchor nest, made of the conditions for installation of cylinders of various sizes.

32. Machine under item 31, wherein the anchor socket is made with the reception areas of the cylinder.

33. Machine according to any one of paragraphs.31 and 32, characterized in that the support is provided with a drive unit to move the support socket.

34. Machine according to any one of paragraphs.32 and 33, characterized in that the reception area of each support cylinder are arranged around the axis of the pivot socket.

 

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