Method of particles distribution over surface and device to this end. RU patent 2513836.

IPC classes for russian patent Method of particles distribution over surface and device to this end. RU patent 2513836. (RU 2513836):

B05C19/04 - the particulate material being projected, poured or allowed to flow onto the surface of the work ( B05C0019020000 takes precedence);;

Another patents in same IPC classes:

Device for application of powder onto material cloth / 2329874
Invention is related to the filed of plants for application of loose materials (powders) on the surface of different materials cloth, such as paper, non-woven materials, leather and its substitutes, fabrics, and may be used in manufacture of wallpapers. Plant for powder application onto material cloth contains feeding bunker, cylindrical dosing shaft, which is installed in rotation supports under feeding bunker and contacts with them, and cleaning brush that is fixed in rotation supports. Feeding bunker is equipped with sealing device that is provided at the outlet of dosing shaft from area of contact with feeding bunker. Feeding bunker is installed with displacement along horizontal in respect to vertical axis of transverse cross section of dosing shaft. Sealing device is made in the form of elastic plate, which is installed along tangent to the dosing shaft transverse cross section circuit contour part inside the bunker and is equipped with mechanism for elastic plate pressing to the surface of dosing shaft. Specified shaft has smooth surface with deepenings that are evenly installed on this surface. Cleaning brush is installed in respect to dosing shaft from the side of its outlet from area of contact with feeding bunker and is installed so that between surfaces of cleaning brush and dosing shaft air gap is provided from 0.1 to 1 mm. Angular rate of cleaning brush rotation is more than angular rate of dosing shaft rotation 5...10 times.

Method of particles distribution over surface and device to this end / 2513836
Invention relates to distribution of particles over the surface of wood-particle boards or impregnated materials. Device to distribute particles over the surface comprises roller-like distributor with curved rubber-coated surface. Besides, it incorporates the roller-like distributor lengthwise oscillation actuator to make particles move from distributing hole over curved surface downward to surface to be dusted. It includes at least one controlled reflection plate to influence particle spraying over the surface and into airflow. Proposed method consists in using particles distributor and container with particles and oscillating the roller-like element in lengthwise direction to make particles move from distributing hole over curved surface downward to surface to be dusted. Roller-like element does not turn about its lengthwise axis.

FIELD: process engineering.

SUBSTANCE: invention relates to distribution of particles over the surface of wood-particle boards or impregnated materials. Device to distribute particles over the surface comprises roller-like distributor with curved rubber-coated surface. Besides, it incorporates the roller-like distributor lengthwise oscillation actuator to make particles move from distributing hole over curved surface downward to surface to be dusted. It includes at least one controlled reflection plate to influence particle spraying over the surface and into airflow. Proposed method consists in using particles distributor and container with particles and oscillating the roller-like element in lengthwise direction to make particles move from distributing hole over curved surface downward to surface to be dusted. Roller-like element does not turn about its lengthwise axis.

EFFECT: better control over distributed particles amount.

21 cl, 3 dwg

The technical field

The present invention relates to a device for the dispersion of the particles, in particular, on the surface of a wood particle Board panels or impregnated materials, as well as to method of scattering particles.

The level of technology

Of prior art known a number of ways dispersion (or dispersion) of the particles on the surface. For example, a document WO 05/042644 A1 known dispersal device, with which the surface of the panel for the floor can be covered with wear-resistant particles. Particles abrasion-resistant material consist, for example, of the compounds containing oxide or silicon, and dissipate even wet decorative paper known by itself laminate panels. After curing, decorative paper, taking place under the influence of temperature and pressure, forms a very durable surface. Dispersal device contains two fold, namely steel roll, and the roller-brush, which are parallel to each other. On the external surface of a steel roller provided little or deepening pockets, and it is installed with the possibility of rotation. Over steel roller placed a container for storage of the particles of the oxide, which is regulated by the way submits these particles on a rotating outer surface of the steel roller. Scattered particles corundum accumulate in depressions or pockets steel roller and, due to the rotation of the roller, captured and moved on. Roller-brush is also installed with the possibility of rotation and is located next to a steel roller, parallel to the side so that the brush elements can sweep filled deepening pockets or on the surface of steel roller. The result is that the particles that have accumulated in hollows or pockets, fall down on the laminate panels or impregnated material, transported under the rollers. In addition, the device includes transport by which the panel or stratified products can move under the rollers rate controlled. The term "impregnated materials" are widespread in the industry and is used to refer to a paper impregnated with resin, such as the aforementioned decorative paper. This paper is used, for example, as an integral part or intermediate product in the production of laminates.

Although this device is working satisfactorily, there is a potential for improvement. For example, it is desirable to improve the management of dosing quantity of scattered particles in a unit of time along the width. In addition, there may still be improved uniformity of the scattering of particles on the surface. In addition, a serious shortcoming of the above-mentioned devices is that in the process vymitani brush resistant to abrasion particles from the surface, that is, from deepening in the steel shaft, the latter subject to wear and tear, as resistant to abrasion particles considerably harder than steel, which are made steel roller. For this reason, steel rollers prior art must be regularly replaced approximately every six months of continuous work. This leads to the costs and quality of dispersion at the end of the service term of steel roller.

The above device is intended for strewing of the surface of the laminate panels or impregnated materials, etc. Laminate panels usually consist of a carrier plate thickness 4-8 mm, made from wood-fiber plates of average density (MDF) or fibreboard high density fiberboard (HDF), on the upper side of the pressure and temperature applied the so-called decorative paper, i.e. the paper on which is printed decorative image, and which is impregnated with resin. On the bottom side of the bearing plate is providing offsetting effect paper impregnated with resin, which serves to counteract the curvature of the support base as a result of applying a decorative paper. This decorative paper to give surfaces necessary durability should be applied abrasion resistant layer, consisting of small particles corundum, which are embedded in the formed resin matrix.

Summary of the invention

The purpose of the present invention consists in that on the basis of the specified level of equipment, run the device for the dispersion of the particles on the surface, which eliminated or reduced the above disadvantages of the prior art. In particular, the aim of the invention is the device that enables a well-dosed dispersion and which are subject to less wear and thus provides economic effect during operation. In particular, the purpose of the invention is to run the device for the dispersion resistant to abrasion particles on the surface of the panels made from wood, in particular, laminate panels described above.

These and other objectives, which will be announced in the following description, or will be understandable to specialists, are achieved by the device, as described in paragraph 1 of the claims, and in the manner described in clause 15 of the claims.

The proposed device for the dispersion or spilling of the particles on the surface applicable, in particular, to disperse particles abrasion-resistant material, such as particles of the oxide on the surface made of wood panels, impregnated materials, etc. in particular, laminate panels, and includes a container to be scattering of particles with at least one of the scattering by hole intended for the discharge of particles and velikorodny distribution element with a curvilinear surface. Scattering hole is located on a curvilinear surface distribution of the element, and preferably runs parallel to the longitudinal axis velikopolovec distribution of the element. The length of the scattering of holes preferably be chosen according to size to be sprinkled the surface, and the same is true for the length velikopolovec distribution of the element. For example, if you must be sprinkled with the surface of a width two meters, then velikorodny distribution element and scattering the hole should have a length of at least two meters. All described here versions of the scattering hole preferably is a gap (the gap for dispersion).

According to the invention the device also provides the means by which velikorodny distribution element can be placed in a state of vibration in the longitudinal direction. Due to this, the particles move from the scattering of holes on a curved surface to bottom, in the direction to be sprinkled surface. Vibration distribution element preferably performs several functions. For example, it provides uniform distribution, that is dissipation, particle to be sprinkled surface. On the other hand, due to vibration, there is no need in the rotation velikopolovec distribution of the element and the need for roller-brush with which the device prior art particles swept by with the surface distribution of the element. Surprisingly, it was found that as a result of vibration of the distribution of the item on its surface not arise (or almost never occurs) wear. For this reason, the proposed device allows particularly well treated, in particular, resistant to abrasion particles, such as particles of corundum.

Specialists should be obvious that the term "container to be particle dispersion" is broad and covers the designation of any type of storage device, which can be ensured supply subject to the scattering of particles in the context of the invention. Significant differences inventions are rather diffuse hole or, respectively, scattering the crack, and its orientation towards velikorodnov distribution element. Velikorodny distribution element preferably represents a cushion, and, in particular, steel roll, because these rolls are widely available and relatively inexpensive. However, for the specialist it is obvious that for the invention is essential rather effective curved surface distribution of the element, i.e. the surface that comes in contact with to be the scattering of particles and impacting particle dispersion. For example, velikorodny distribution element may consist of the cushion, which partly cut in the longitudinal direction, i.e. has a section, for example in the shape of half of a circle, three-quarters of a circle or a quarter of a circle.

Held by the applicant experiments have shown that for a particularly effective dispersion line, which determines the curvature of a curved surface, preferably should be in the form of an arc of a circle. This arc of a circle, in particular, should be inscribed angle (Central angle") by the value of at least 70 degrees; preferably at least 80 degrees, even more preferably at least 90 degrees, and most preferably at least 100 degrees.

In particularly preferred embodiment of, at least, on the effective curved surface velikopolovec distribution element coated. This coating preferably represents rubber, which is applied to the surface distribution of the element known, in particular, by means of vulcanization. All described here versions of the distribution element preferably made of steel. The applicant, to his surprise, found that the rubber coating of the surface velikopolovec distribution element improves the uniform particle dispersion in comparison with pure steel surface. In addition, it was found that the rubber coating improves wear resistance in comparison with pure steel surface. In particular, this is true when applied resistant to abrasion particles, such as particles of corundum. This fact is surprising, because the rubber surface, of course, has a much lower hardness than, for example, the steel surface. We must assume that due to their elastic properties of rubber coating less sensitive to sharp edges subject to the scattering of particles than, and far more rugged, but not with the elasticity of the steel surface.

As already mentioned, the device is particularly suitable for treatment resistant to abrasion particles, such as particles of corundum. The above rubber layer (or rubber floor) should have a shore hardness scale And between 40 and 80, preferably 50-70, and especially preferably 55-65. Hardness shore is a well-known characteristic of the material for elastomers and plastics and set to German industrial standard DIN 53505 and DIN 7868.

Experts know about various mechanical generators fluctuations to create a vibration velikopolovec distribution of the element. Distribution element preferably installed with the possibility to make fluctuations and oscillations are excited, for example, with the help of a vibrator or generator oscillations in the frequency range 10-250 Hz, preferably 20-150 Hz, and it is most preferable - 30-80 Hz. The oscillation amplitude is found in the region of a few tenths of a millimeter, for example, about 0.1 mm Established that the selection of these bands gives particularly good results. The specialist should be obvious that all options described here run in the General case there is no need in the rotation velikopolovec distribution element around its longitudinal axis, and on the contrary, it can be installed without the possibility of rotation.

The proposed device allows a particularly good throttling dispersed particles. The device preferably allows you to adjust the distance between the scattering gap, that is scattering by hole, and curvilinear surface velikopolovec distribution of the item to change the number of dispersed particles. The more the distance, the more particles are produced per unit of time. Also on the quantity of particles can be influenced by controlling vibrations, i.e. its frequency. Therefore, funds intended to bring distributive item in a state of vibration, preferably with adjustable to allow for the selection of suitable frequency depending on the application. In particular, the device is applicable for treatment of particles with a diameter of 60 to 120 microns, and especially for the particles with the size of grains from 220 up to 150 microns.

Brief description of drawings

The following is a detailed description of the drawings, in which:

Figure 1 shows a front view of the proposed device for the dispersion of particles.

Figure 2 shows the schematic view of the side of the device, illustrated in figure 1.

Figure 3 shows a schematic view of the side of another version of the execution of the invention.

The implementation of the invention

However, the specialist should be obvious that the invention is equally suitable for obsypaniya only impregnated paper, which, in this case, for example, can be transported under the device with a suitable roller conveyor. In other words, the device is suitable for obsypaniya impregnated materials before they, for example, are subject to further processing to produce laminate panels.

Figure 2 shows a side view of unit 1. On the side view are clearly visible rollers 42 conveyors. Arrow near chipboards 44 shows the direction of movement of the plate 44. Also figure 2 schematically shows how particles 12 out of 20 container on a curved surface of 36 distribution of item 30, and, consequently, how they move down due to vibration distribution of item 30. 20 container contains scattering hole 22, designed for unloading of particles 12. Container 20 additionally equipped with a device 24, with which the container 20 may move in the vertical direction. Due to this, can increase or decrease the distance between the scattering hole 22 and distribution element of 30. Of course, to regulate the distance to the surface distribution of the element can also be used other means. The distance between the scattering hole and surface distribution of the item, preferably as in all versions of the invention - regulated so that in the absence of vibration distribution element particles would not excluded from the scattering of holes. Particles "vystragivajut" out of the hole only in the transmission of vibrations from the distribution of the element to a covered container particles.

Figure 2 below shows that the surface distribution of item 30 is supplied by a covering 38. Floor 38 is a rubber coating applied by the method of vulcanization. Furthermore, figure 2 shows reflecting plate 14, which you can use to influence the path of the particle 12. Reflecting plate 14 preferably with the ability to regulate, in order to be able to influence the process of scattering of particles on the surface of the panel 44, as well as on the air flow. In addition, reflecting plate equipped with a tool 16 creating vibration with which, on the one hand, you can have additional effects on the scattering of particles, and on the other hand, prevent the accumulation of particles 12 on the surface is reflective plate 14. In the alternative, for example, it is possible to mechanically combine reflective plate with junction 14 item 30 or tool 32 so that fluctuations in the distribution of the element or, respectively, tools, 32, was transferred to a reflective plate 14. In this case, from individual funds 16 creating vibration can be waived.

Illustrated with drawings distribution element preferably is a steel roller, for example, the length of 1-3 m and a diameter of 80-300 mm Scattering hole 22, for example, is a slit 1-3 meters wide and 1-3 mm Specialist should be clear that in the schematic illustrations are not met the true scale, and that some details partially increased in order to make them more visible. This, in particular, refers to the illustrated scattering hole 22 and particles 12. Usually subject to the scattering of particles, in particular, in the case of particles of the material, resistant to abrasion, such as particles of alumina, which are used for surfacing surface of the laminate panels are the sizes of the order of micrometers.

Figure 3 shows an alternative distribution item 30'. Distribution item 30' also design resembles a roller, however, it is not circular cross-section, and the section in the form approximately one quarter of a circle. Effective curved surface 36', i.e. the surface that comes into contact with the underlying dispersion particles of 12 and is responsible for the distribution of these particles has the shape of an arc of a circle with the Central (entered) by the angle of? approximately 100 degrees. It is necessary to ensure that due to asymmetric shape did not arise own unmanaged move. As you can well see figure 3, scattering hole is offset by a few degrees from the vertical of the Central axis 31 distribution of the element. This ensures that the distributable particles 12 fall down essentially in the right direction (on the drawing right).

1. The device (1) for the scattering of particles (12) on the surface (46), containing the container (20) to be the scattering of particles with at least one of the scattering by hole (22), intended for the discharge of particles, and velikorodny distribution element (30) curvilinear surface (36), and scattering the hole is located on a curvilinear surface, characterized in that in a curved surface (36) velikopolovec distribution element (30) caused the rubber coating, this provides a tool (32), which velikorodny distribution element can be placed in a state of vibration in the longitudinal direction so that the particles (12) moved from the scattering of holes (22) on a curved surface (36) down in the direction to be sprinkled the surface, where the device (1) contains at least one reflecting plate (14), made with the possibility of regulation in order to be able to influence the process of scattering of particles on the surface and in the air flow.

2. The device of claim 1, characterized in that the surface (46) is a surface of a wood particle Board panels or impregnated materials.

3. The device according to claim 1 or 2, characterized in that line, which determines the curvature of a curved surface (36), is an arc of a circle with the Central angle of? value of at least 70 degrees.

4. The device according to claim 3, wherein the Central angle of? equal to at least 80 degrees.

5. The device according to claim 3, wherein the Central angle of? equal to at least 90 degrees.

6. The device according to any of claim 1 or 2, wherein velikorodny distribution element (30) is a roller hole scattering (22) is a scattering the gap, which is parallel to the longitudinal axis of the shaft.

7. The device according to claim 1 or 2, wherein the particles (12) contain particles abrasion-resistant material.

8. The device according to claim 7, wherein the particles (12) contain particles of corundum.

9. The device according to claim 1 or 2, wherein the scattering hole (22) is designed to particles (12) could fall from it down under the action of gravity, and between the specified scattering by hole and curvilinear surface (36) velikopolovec distribution element (30) there is a distance that is chosen so small that in the absence of vibration velikopolovec distribution element particles do not fall out of the scattering of holes.

10. The device according to claim 1 or 2, wherein velikorodny distribution element (30) is a steel roller length of 1-3 m and a diameter of 80-300 mm, and hole scattering (22) is the scattering slit 1-3 meters wide and 1-3 mm

11. The device according to claim 1 or 2, wherein velikorodny distribution element (30) is a steel roll, and scattering the hole (22) is a scattering the gap, which is parallel to the longitudinal axis of the shaft and shifted 1-30 degrees from the vertical of the Central axis (31) steel roller.

12. The device according to claim 11, wherein the scattering crack offset by 3 to 20 degrees from the vertical of the Central axis (31) steel roller.

13. The device according to claim 11, wherein the scattering crack offset by 5-15 degrees from the vertical of the Central axis (31) steel roller.

14. The device according to claim 1 or 2, characterized in that in order to ensure the possibility of changes in the number of dispersed particles distance between the scattering hole (22) and curvilinear surface (36) velikopolovec distribution element (30) are made with adjustable, preferably independently throughout the width.

15. The device according to claim 1 or 2, wherein the tool (32), designed to bring velikopolovec distribution element in a state of vibration, and operates in the frequency range 10-250 Hz.

16. The device indicated in paragraph 15, wherein the tool (32), designed to bring velikopolovec distribution element in a state of vibration, and operates in the frequency range of 20-150 Hz.

17. The device indicated in paragraph 15, wherein the tool (32), designed to bring velikopolovec distribution element in a state of vibration, and operates in the frequency range 30 to 80 Hz.

18. The device according to claim 1 or 2, wherein velikorodny distribution element (30) made without the possibility of rotation around its longitudinal axis.

19. The device of claim 1, characterized in that it additionally contains tools (16, 32) to bring at least one reflecting plate in a state of vibration.

20. The device according to any one of claims 1, 2 or 19, wherein at least one reflecting plate (14) connected with velikorodny distribution element (30) so that the vibration from velikopolovec distribution of the item can be transmitted to the specified reflective plate.