Mold to the press

 

(57) Abstract:

Usage: structural elements of presses for the manufacture of thin flat parts. The inventive mold to the press contains punches and matrixes, located in the clamps, the upper and lower plates connected to the pressure and the support legs interconnected with the bottom plate. Legs made in the form set vertically installed on the desktop press their bottom ends of thin-walled tubes. Their upper ends are located over the entire area of the bottom gorizontalnoi surface of the bottom plate. Pipe length is chosen equal to the difference of the stroke of the press slide and the mold height in operating position from the lower horizontal surface of the bottom plate to the upper horizontal surface of the upper plate. 2 Il.

The invention relates to structural elements of presses, in particular for a press-forms and can be used in the manufacture of plastics or rubbers thin flat parts on large presses with large dimensions of the table and a large stroke of the RAM.

Known mold containing a matrix and a punch, a basic element for the matrix and node removal of finished products [1] it oporn low performance, and through the groove and the slot in the support element can lead to deformation of the mold during its operation.

Known mold to the press containing the punches and matrixes, located in magazines, respectively punches and matrices, upper and lower plates connected with the press, and the support legs interconnected with the bottom plate [2] In the mold supporting rack is made in the form of rods that are installed on the bottom plate at the ends of the racks are placed in curly holes ring mounted rotatably in the top plate. Racks are located at the edges of the bottom plate. The weight of the upper plate is divided into two hours. By functionality (pressing) and the most common elements (punches, matrices, cage punches and matrices, upper and lower plates, racks interconnected with the bottom plate). Specified mold is selected as the nearest equivalent.

In the famous moulds for presses not provided a uniform distribution of force pressing on the mold while pressing a few thin flat parts one press-form on large presses with a large stroke of the RAM that causes deformation of the mold the weight of the mold is complicated its Assembly and disassembly. For example, in the manufacture of parts for oil hydraulic press model DE force 630 tons with dimensions desktop h mm and stroke of the slide (closed height) 800 mm bench press form has such great weight that it cannot be installed on a press without the use of multi-ton cranes. When this mold, with only two legs interconnected with the bottom plate during operation will be deformed, and in the case of plates heating and hot pressing due to uneven distribution of force pressing on the mold, this deformation will lead to a significant reduction in the quality of the parts being manufactured.

The purpose of the invention is the provision of a uniform distribution of force pressing on the mold, reducing deformation of the mold, while simultaneously pressing multiple thin flat parts, one press-form on large presses with a large stroke of the RAM, simplifying Assembly and disassembly of the mold in the press.

The objective is ensured by the fact that in the mold to the press containing the punches and matrixes, located in magazines, respectively punches and matrices, upper and lower plates connected with the press, and imaamah on your desktop and press their bottom ends of thin-walled tubes, the upper ends of which are located over the entire area of the bottom horizontal surface of the bottom plate, the length of thin-walled tubes is selected equal to the difference of the stroke of the press slide and the height of the mold in its working position from the lower horizontal surface of the bottom plate to the upper horizontal surface of the upper plate.

In the proposed device the mold pressing force generated between the slider and a work Desk press, is transmitted by a set of thin-walled pipes and evenly distributed over the entire area of the bottom plate of the mold, and through it on the manufactured parts. The cross section of the pipe (thickness, shape and size) is selected from the conditions for the transfer of tonnage without deformation of the pipe, which virtually eliminates deformation of the mold and improves the quality of manufacturing a thin flat parts with simultaneous pressing of multiple parts, one the mold during its long-term operation. In addition, this dramatically reduces the weight of the mold and simplifies the Assembly and disassembly of the mold in the press, as each thin-walled pipe is negligible (compared to the reception of a solid metal weight and the entire set of pipes can be easily fitted"ptx2">

In Fig. 1 shows a General view of the mold of Fig.2 a cross section through the set of thin-walled pipes.

Mold (Fig.1) contains the punches 1 and matrix 2, located respectively in the holder of the punches 3 and the yoke 4 matrices. In the manufacture of parts made of plastics or rubber mold includes plate heat 5 and 6, having a pipe which circulates teplopodvodyaschey agent, for example, hot steam. During cold pressing flat thin-walled parts of legkodeformiruemyh metals or alloys plate heat no. The mold includes an upper plate 7 and the bottom plate 8 connected to the pressure. Fixation of the upper and lower parts of the mold is column 9, secured in the holder of the punches 3, and the sleeves 10, secured in the holder of the matrix 4. Mold also includes support columns 11, interconnected with the bottom plate 8.

The support legs (Fig.2) is made in the form of a set of vertically mounted on the desktop press their bottom ends of thin-walled tubes. The upper ends of thin-walled pipes are located over the entire area of the bottom horizontal surface of the bottom plate. The length of thin-walled pipes H1selected equal to the difference of the stroke X of the press slide and the height ol ostalnoe surface of the upper plate. The thickness, shape and size in cross section thin-walled pipes selected from the conditions for the transfer of tonnage on the bottom plate of the mold without deformation of thin-walled tubes. The total working area of the cross-section of a set of thin-walled tubes is approximately equal to the working area of the bottom plate 8.

The upper part of the mold (clip 3 with the punches 1, the plate heater 5 and the upper plate 7) is attached to the press slide (traverse) by means of bolts 12, the threaded part of which is passed through the hole of the holder 3 punches.

The lower part of the mold (clip 4 by 2 matrices, stove heater 6, the bottom plate 8) is mounted on a set of thin-walled pipes 11 and is fastened to the desktop press the bolts 13, the threaded part of which passed through the holes of the cage 4 matrices. Each matrix has designed the cavity 14 for placement of the product.

Mold is as follows.

In the manufacture of products from plastics or rubber mold is heated to a process temperature, feeding teplopodvodyaschey agent, for example, hot steam, plate heat 5 and 6. The mold is open, the load in each of the main cavity (socket) 14 matrix 2 a portion of compressible material, NEs form open and remove the finished product.

In accordance with the proposed device company "KARMA" is developed and tested with positive results mold for manufacturing a thin flat rubber parts for type "Pad" height 5-8 mm oil hydraulic press model DA with force 630 t and move the slider to 800 mm, and oil hydraulic press model DG-2434 progress slider 550 mm and a force of 250 tons

The height of the mold H2(one-story) from the lower horizontal surface of the bottom plate to the upper horizontal surface of the upper plate is 250 mm, the rack is made in the form of a set of thin (2-3 mm thick) round tubes with a length of 550 mm for the abs model DA and a length of 300 mm for the abs model DG-2434.

The test molds arranged by "KARMA", confirmed the achievement of the technical result is specified in the description of the invention of providing a uniform distribution of force pressing on the mold, is practically eliminated deformation of the mold while pressing a thin flat parts, one press-form on large presses with a large stroke of the RAM, simplifying Assembly and disassembly of the mold on the press (provide Assembly and disassembly without special powerful GUI operation of the mold.

Mold TO the PRESS containing the punches and matrixes, located in magazines, respectively punches and matrices of the upper and lower plates connected with the press, and the support legs interconnected with the bottom plate, characterized in that the supporting rack is made in the form of a set of vertically mounted on the desktop press the lower ends of thin-walled tubes, the upper ends of which are located over the entire area of the bottom horizontal surface of the bottom plate, the length of thin-walled tubes is selected equal to the difference of the stroke of the press slide and the height of the mold in its working position from the lower horizontal surface of the bottom plate to the upper horizontal surface of the upper plate.

 

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