JPH07903A - Resin coating device for parts - Google Patents

Abstract

PURPOSE:To obtain a resin coating device for parts with the reduced generation of industrial waste at the time of producing the parts coated with a powdery adhesive resin. CONSTITUTION:A sprinkling roll 2 and a doctor 4 to be pressed on the roll 2 are provided close to the lower opening of a hopper 1 for supplying an adhesive resin, and a doctor adjusting plate 5 for fine-adjusting the degree of pressur contact between the roll 2 and doctor 4 is disposed to the doctor 4. A brush roll 3 is disposed in contact with the roll 2 on the opposite side of the doctor 4, a static eliminator 9 and a wire 8 are disposed to the brush roll 3, a screen 7 is dirposed below the roll 2, a conveyor belt 10 is provided below the screen 7, and a drier is set in the traveling direction of the conveyor belt 10 to constitute the resin coating device for parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for applying a powdery adhesive resin to a bonding surface of sheet-like parts.

[0002]

[Prior Art] For pasting sheet-like parts together,
The powdery adhesive resin was previously sprayed on the sheet, and the sheet was heated, melted, and fixed, and then the sheet coated with the adhesive resin was cut into parts and attached to an object to be adhered such as cloth, paper, or film.

[0003]

However, in the above-mentioned conventional method, since the sheet-like material coated with the powdery adhesive resin is cut into parts, a large amount of cutting loss coated with the powdery adhesive resin is generated. There is a problem that occurs. These cutting losses are industrial waste that is difficult to reuse and dispose of. The present inventor has found that one of the reasons that makes it difficult to reuse and dispose of the cutting loss is that the powdery adhesive resin and the sheet are integrated, and these are treated separately. By doing so, it was found that reuse and disposal can be effectively performed, and an object is to provide a resin coating device for parts that enables this.

[0004]

Means for Solving the Problems The above-mentioned problems are solved by disposing a spraying roll 2 and a doctor 4 in pressure contact with the spraying roll 2 in contact with a lower opening of a hopper 1 for supplying an adhesive resin of the present invention. 4 is provided with a doctor adjusting plate 5 for finely adjusting the degree of pressure contact between the spraying roll 2 and the doctor 4,
The brush roll 3 is disposed in contact with the opposite side of the surface of the spray roll 2 in which the doctor 4 is in contact with the spray roll 2, and the static electricity removing device 9 and the wire 8 are disposed in the brush roll 3 below the spray roll 2. The screen is provided with a screen 7, a conveyor belt 10 is provided below the screen 7, and a dryer 11 is installed in the traveling direction of the conveyor belt 10. To be done. The resin coating device for parts of the present invention will be described below.

The hopper 1 used in the present invention stores the resin powder and supplies it to the spray roller 2. The spraying roll 2 used in the present invention is disposed in contact with the lower opening of the hopper 1 and is driven by a motor at a rotation speed corresponding to the spraying amount of resin. The surface of the spreading roller 2 is knurled to form a recess. Various shapes can be used as the concave shape carved by knurling, but the V-shaped knurling has a V-shaped cross-section with an opening angle of V of 45 to 60 °.
Is preferable, and a cross knurled shape is more preferable.

The doctor 4 used in the present invention is attached to the lower part of the hopper 1 and is pressed against the spray roll 2 by the doctor adjusting plate 5. A doctor made of a metal plate or a plastic plate is used as the doctor 4, but a doctor made of felt is particularly preferable. Of these, wool is preferred.

The doctor adjusting plate 5 used in the present invention is for contacting the doctor 4 with the spraying roll 2 under pressure, and is capable of fine adjustment. The doctor adjusting plate 5 is formed by processing a metal plate such as an iron plate or a plastic plate, and may be any one that presses the doctor 4 evenly against the spraying roll 2.

The brush roll 3 used in the present invention is provided to completely disperse the adhesive resin remaining or adhering to the spray roll 2 when a predetermined amount is sprayed by the spray roll 2 and the doctor 4. A brush made of plastic or the like can be used as the brush of the brush roll 3, but a brush of natural hair such as black pig or horse is preferable.

The wire 8 used in the present invention is attached in contact with the brush roll 3 in order to remove the adhesive resin adhering to the brush of the brush roll 3. As the wire 8, an iron wire or a SUS wire is used. Wire 8
It is extremely effective to completely disperse the adhesive resin by disposing the static electricity removing bar with the air purge facing the brush roll 3 from which the adhesive resin has been removed, and removing the static electricity generated in the brush roll 3. is there.

The sluice 7 used in the present invention is provided to once receive the adhesive resin scattered from the splaying rolls 2 and the like and to drop it evenly. The sieve 7 is made of wire mesh or punched wire mesh. The hole diameter of the sieve, the hole pitch, and the aperture ratio of the hole are selected according to the type or particle size of the adhesive resin to be spread, but the hole diameter is 2 to 4.5 m.
m, a hole pitch of 3 to 6 mm, and a hole opening ratio of 40 to 51% are preferable. If necessary, add 2 screens
You may use it in steps.

Conveyor belt 10 used in the present invention
Is a mesh belt, and the adhesive resin scattered through the screen 7 drops and adheres to the adhesive surfaces of the sheet-shaped and plate-shaped parts on the conveyor belt 10. The adhesive resin that has come off the adhesive surface of the parts passes through the mesh of the conveyor belt 10 and falls further downward to be recovered by the resin powder recovery chute 13.

The resin powder recovery chute 13 used in the present invention may be any one as long as it recovers the adhesive resin that drops through the conveyor belt 10, and the shape and the like may be appropriately adapted to the situation.

The dryer 11 used in the present invention comprises two main parts, a silica heater box 12 on the upper side and a conveyor belt 15 on the lower side. Silica heater box 12
A plurality of Schbank burners, silica heaters, ceramic infrared heaters, etc. are arranged, and the amount of heat can be adjusted individually or for each block. The silica heater box 12 can be moved up and down to heat and melt the adhesive resin on the adhesive surface of the part in a suitable state.

The lower conveyor belt 15 is disposed substantially horizontally and slightly apart from the conveyor belt 10 so that the parts on the conveyor belt 10 continuously move on the conveyor belt 15.
Same or slightly faster than silica heater box 12
Move below. The conveyor belt 15 may be heat resistant so that parts can be placed thereon and moved.

[0015]

In the present invention, the adhesive resin prepared in the hopper 1 is supplied from the rotation of the spray roll 2 and the gap between the doctor 4 and the spray roll 2 adjusted by the doctor adjusting plate 5.
It drops toward the sieve 7 below by a predetermined amount. The adhesive resin remaining on the spray roll 2 is removed by the rotation of the brush roll 3. The static electricity generated in the brush roll 3 and the adhesive resin that adheres are removed by the static electricity removing device 9 and the wire 8. The adhesive resin once received by the sieve 7 is evenly scattered and adhered toward the adhesive surfaces of the sheet-shaped and plate-shaped parts on the conveyor belt 10 by the movement and vibration of the sieve 7. The conveyor belt 10 conveys the parts to which the adhesive resin is attached to the conveyor belt 15 of the dryer 11. The adhesive resin, which is separated from the adhesive surface of the parts and is sprayed on the upper surface of the conveyor belt 10, falls through the mesh of the conveyor belt 10 and is recovered by the resin powder recovery chute 13. The conveyor belt 15 of the dryer 11 receives the parts on the conveyor belt 10 and moves below the silica heater box 12 to heat and melt the adhesive resin and fix it to the parts.

[0016]

EXAMPLES Examples of the present invention will be described below, but the present invention is not limited to these examples. A description will be given based on FIGS. 1 and 2. A spray roll 2 is rotatably arranged on the frame 20 of the resin coating device for parts in contact with the lower opening of the hopper 1 fixed by a bolt. In addition, in the lower opening of the hopper 1, the doctor 4 is spraying the roll 2
It is attached so that it can be replaced. The spraying roll 2 is connected to and driven by a drive motor 21 and an inverter 22. The doctor adjusting plate 5 is attached so that the doctor 4 can be pressed against the spray roll 2 to finely adjust the gap between the doctor 4 and the spray roll 2. Brush roll 3
The brush is disposed in contact with the spraying roll 2 and is driven by being connected to a driving motor (not shown) via a pulley (not shown). An electrostatic remover 9 with air purge is attached to the brush roll 3, and a wire 8 is attached in contact with the brush.

The adhesive resin prepared in the hopper 1 falls at a predetermined rate by adjusting the rotation speed of the spray roll 2 and the gap between the spray roll 2 and the doctor 4. Spraying roll 2
The adhesive resin remaining on the surface is removed by the static eliminator 9 and the wire 8 and falls.

Immediately below the spraying roll 2, there are two stages of vibration-equipped sieves 7 (not shown including the driving force).

The adhesive resin dropped by the spraying roll 2 is received by the vibrating screen 7 and uniformly sprayed and dropped.

One conveyor roll 30 is provided below and one below the screen 7, and one conveyor belt receiving roll 31 is provided below each conveyor roll 30, and one conveyor belt receiving roll 30 is provided between the rear conveyor roll 30 and the rear conveyor belt receiving roll 31. One of the conveyor belt tensioning and deviation adjusting rolls 32 is disposed on the above, and the mesh-like conveyor belt 10 is endlessly hung on each roll.

Front and rear conveyor belt receiving rolls 31
A belt cleaning pipe 14 is arranged so as to sandwich the conveyor belt 10 in the rear part of the space between the pipes. Both pipes are connected to a blower (not shown), and air is blown from the upper pipe and sucked by the lower pipe. The adhesive resin adhering to the conveyor belt 10 passing between the upper and lower pipes is removed.

The rear conveyor roll 30 is driven by a driving motor 23 and an inverter 24, and the conveyor belt 10 rotates endlessly. The conveyor belt 10 is stretched substantially horizontally between the front and rear conveyor rolls 30, and conveys the parts on the conveyor belt 10 horizontally to the conveyor belt 15 of the dryer 11.

The dryer 11 has a silica heater box 12 and a conveyor belt 15 as main parts. The silica heater box 12 is provided with three silica heaters 16 as one block and three blocks are arranged. The silica heater 16 can be turned on / off individually or in blocks. The silica heater box 12 is suspended vertically from the frame 17 of the dryer 11 by four bolts (not shown). The conveyor belt 15 is the driving roller 2
6. Conveyor belt adjusting roll 1 for preventing tension and deviation of the guide roll 18 and the conveyor belt 15 from being adjusted
9 and is driven endlessly by a drive motor 25.

[0024]

EFFECTS OF THE INVENTION The resin coating device for parts of the present invention can cut the parts from the sheet because the adhesive resin can be continuously and evenly sprayed on the bonding surfaces of the sheet-shaped and plate-shaped parts that have been cut in advance, and can be heated and melted and fixed as they are. The adhesive resin does not adhere to the loss that occurs when doing, and the adhesive resin that is scattered from the adhesive surface of the part is dropped from the mesh of the mesh-like conveyor belt and is recovered and reused, so no loss occurs.
Therefore, the cutting loss that has been generated in a large amount in the past is reduced, the cutting loss itself can be reused, and the generation of industrial waste, which is difficult to treat, is significantly reduced. In addition, since the type and amount of resin can be easily changed, it is possible to meet the required quality of the product and the like, which has the effect of increasing the added value.

[Brief description of drawings]

FIG. 1 is a schematic side view of an adhesive resin spraying part of the main part of the present invention.

FIG. 2 is a schematic front view of an adhesive resin spraying part of the main part of the present invention.

FIG. 3 is a schematic side view of the dryer section of the main part of the present invention.

FIG. 4 is a schematic plan view of the dryer section of the main part of the present invention.

[Explanation of symbols]

 1) Hopper 2) Spraying roll 3) Brush roll 4) Doctor 5) Doctor adjustment plate 6) Stay 7) Swivel 8) Wire 9) Antistatic bar 10) Conveyor belt 11) Dryer 12) Silica heater box 13) Resin powder Body recovery chute 14) Belt cleaning pipe 15) Conveyor belt 16) Silica heater 17) Frame 18) Guide roll 19) Conveyor belt adjusting roll 20) Frame 21) Driving motor 22) Inverter 23) Driving motor 24) Inverter 25) Driving Motor 26) Driving roller 30) Conveyor roll 31) Conveyor belt receiving roll 32) Conveyor belt tensioning and deviation adjusting roll

Claims (1)

[Claims] 1. A spraying roll 2 and a doctor 4 for press-contacting the spraying roll 2 are arranged in contact with a lower opening of a hopper 1 for supplying an adhesive resin, and the doctor 4 presses the spraying roll 2 and the doctor 4 together. The doctor adjusting plate 5 for finely adjusting the degree of the above is disposed, and the brush roll 3 is disposed in contact with the opposite side of the surface of the spray roll 2 in which the doctor 4 is in contact with the spray roll 2, and the brush roll 3 is electrostatically removed. A device 9 and a wire 8 are provided, a sieving 7 is provided below the spraying roll 2, a conveyor belt 10 is provided below the sieving 7, and a dryer 11 is installed in the traveling direction of the conveyor belt 10. The resin coating device for parts, which is characterized by being