JPH06262111A - Device for regulating and controlling coating quantity of adhesive - Google Patents

Abstract

PURPOSE:To uniformize the coating quantity of a coating surface by miniaturizing and simplifying a thermoplastic adhesive applying device and regulating the thickness of the coating quantity of an adhesive to a min. possible quantity. CONSTITUTION:A block 2 is placed to face a coating roller 1. This block is constituted by stacking laminated materials 6, 7 atop a heater and sensor insertion plate 5 and mounting an adjusting plate 15 fixed with a plate 12 for regulating the adhesive on its rear surface. The coating quantity of the adhesive is regulated by this adjusting plate. The heaters and sensors to be inserted into heater and sensor holes maintain the adhesive temp. of the adhesive by dividedly measuring the temps. and regulating heating. Then, the block 2 is placed to the coating roller 1 and the plate for storing, heat insulating and regulating the adhesive is used in the intermediate recessed part between both and, therefore, the coating to about 0.03mm is possible while the coating thickness is heretofore possible down to 0.07mm. The coating of an extremely thin blank material, laminate, aluminum foil, etc., with the adhesive is made possible and simultaneously, there is an effect in the miniaturization and simplification of the device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to vehicles, electric appliances, furniture woodworking, building materials, food packaging, etc., and partitioning materials for food such as front doors, bathrooms, kitchen doors, free access floors, etc. The present invention relates to an improvement in the regulation and control method of the application amount of the adhesive on the transfer surface of the application roller when the adhesive is applied to the surface of an extremely thin material for packaging such as laminate or aluminum foil.

[0002]

2. Description of the Related Art Conventionally, this type of technology has been disclosed in Japanese Patent Publication No. 1-4.
No. 3585 and Japanese Utility Model Publication No. 64-1014, and there are applications such as Japanese Patent Application No. 3-102177.

However, in any of the techniques, both rollers, which are opposed to a coating roller and a doctor roller (hereinafter referred to as both rollers), are mounted, and an adhesive agent is stored in a concave portion on the upper surface of both rollers to oppose each other. A method of regulating the amount of adhesive applied by adjusting the gap on the outer peripheral surface is adopted.

[0004]

In the case of controlling and adjusting the amount of adhesive applied by adjusting the gap by the combination of both rollers which has been conventionally adopted, thermoplastic hot melt adhesive and reactive urethane hot melt adhesive are used. From the melting and melting apparatus for the agent (hereinafter, both are simply referred to as an adhesive), the agent is transferred to a storage location in the upper surface recess of both rollers and temporarily stored, and
Since a method for mounting a heater for heating on the shaft cores of both rollers to prevent the adhesive from cooling is adopted, it is necessary to heat both rollers while the adhesive is constantly stored.

Therefore, when an adhesive is applied to a long and wide workpiece, distortion often occurs inside both rollers, and when the distortion occurs in the same direction of both rollers. It is good, but in the case of toothing that occurs in opposite directions, it is impossible to adjust the gap between both rollers, which eventually causes "unevenness" in the application of adhesive on the surface of the work piece, and also the outer peripheral surface of both rollers. The flow-back of the uncoated adhesive agent causes a decrease in the adhesive temperature of the adhesive agent stored in the concave portions on the upper surfaces of both rollers, and there are many problems such as the difficulty of maintaining the adhesive temperature.

Therefore, when the work piece is applied to a long and wide material, the above-mentioned application "unevenness" was also absorbed on the wide application surface. However, the consumption amount of the adhesive was increased more than necessary. Was becoming.

When an adhesive is applied to the surface of an ultra-thin material such as the laminate and aluminum foil, the above-mentioned "unevenness" of application of the adhesive is not absorbed and adheres to the surface of the adhered material "wrinkle". It was generated as an aggregate. Therefore, commercialization is impossible, and the extra consumption of adhesive has increased.

Especially when applied to the above-mentioned ultra-thin laminate or aluminum foil, the unevenness of the applied amount on the applied surface is directly displayed as "wrinkles" on the surface of the material to be adhered on the other surface, which is beautiful. Was lost and commercialization was impossible.

In addition, in the regulation of the amount of adhesion by both rollers, no matter how carefully the adjustment is carried out, the minimum limit is 0.07 mm. Therefore, the adhesive is applied to the above-mentioned laminate and an extremely thin material such as aluminum foil. In this case, various problems have occurred even if the gap between both rollers is narrowed to the maximum and the work is carefully performed while gazing at the coated surface.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, as a result of various tests and experiments, the method of regulating and adjusting the amount of adhesive applied by both rollers is adjusted by adjusting the gap between the rollers. Abolish the application amount regulation and adjustment method.

Instead of removing the doctor roller by using a fixed coating roller, a doctor plate (hereinafter simply referred to as a plate) for temporarily storing the adhesive and regulating and controlling the coating amount is provided at a position facing the front of the coating roller. (Hereinafter referred to as "), and a block (hereinafter simply referred to as a block) in which an insertion plate having a heater and a sensor for detecting temperature (hereinafter simply referred to as a sensor) is mounted and a laminated plate is stacked on the upper surface is provided. .

By inserting a heater and a sensor into the member forming the block, the bonding temperature of the adhesive temporarily stored in the space between the block and the coating roller is always kept at the optimum bonding temperature, and each member forming the block is In order to remove internal strain before processing, each member is annealed at the optimum temperature (hereinafter referred to as heat treatment), and the strain that affects the plate due to the heat retention of the adhesive is stacked on the block. The members are stacked to absorb and disperse to avoid direct strain effects on the plate.

The melting and melting apparatus for solid hot-melt adhesives is described in Japanese Patent Application No. 3-42621 "melting and melting apparatus for thermoplastic synthetic resin" and Japanese Patent Application No. 2-334949 "melting and melting apparatus for reactive synthetic resin". To use.

Conventionally, the regulation of the gap between the rollers and regulation of the coating amount of the adhesive by the regulation can be adjusted to a minimum of 0.
Although it was limited to about 07 mm, when adjusting with the plate attached to this block, it is possible to narrow down to about 0.03 mm, so it is also possible to apply adhesive to the surface of laminate of ultra-thin object and aluminum foil etc. It is also possible to apply the coating amount uniformly and without "uniformity".

Further, dial gauges are installed symmetrically on both ends of the fixed application roller, the receiving metal is fixed to the block, the parallelism between them is maintained, and the gap between the application roller and the plate of the block is adjusted. Can also be confirmed.By inserting a gap adjusting combination spacer and a retracting spacer in the middle part of the pneumatic cylinder for advancing and retracting the block, the remaining adhesive after the work is discharged and Cleaning can be completed completely and easily

[0016]

The operation will be outlined with reference to the drawings.
A block 2 is formed and arranged on the front surface facing the coating roller 1, and the block is provided with an adjusting plate 15 in which a plate 12 for adhesive control is fixed to the lower surface of the heater and sensor insertion plate 5.

The laminated plates 6 and 7 are stacked and fixed on the upper surface of the heater and sensor insertion plate 5, and the contact plate 8 is fixed on the side surface.
Screw holes 18A and through holes 18 are alternately arranged in the lower part of the plate, and the clearance between the outer peripheral surface of the coating roller 1 and the plate 12 fixed to the adjusting plate 15 is set to the dial gauge 26, 26A in the upper part.
The two are accurately aligned by visual inspection, and adjusted with the adjusting bolt 17 and fixed with the lock nut 20.

On the other hand, the block 2 is moved by the pneumatic cylinder 29.
.Combined spacers 27, 27 arranged in the middle of 29A
To change the coating amount depending on the combination of A, change the combination of the combination spacers 27 and 27A described above to the dial gauge 2
It is possible to easily change it by checking the scale of 6.26A.

After the work is completed, the combination spacer 27 / 27A
The block 2 is retracted by driving the pneumatic cylinders 29A and 29A, so that the adhesive remaining in the recess can be easily discharged and cleaning can be facilitated.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the invention will be described with reference to the drawings.
The present embodiment is an embodiment in which an adhesive is applied to a long and wide product, particularly an ultrathin product.

A block 2 is arranged on the front surface facing the coating roller 1 having a heater (not shown) for heating in the shaft core. Each member constituting the block surely undergoes heat treatment for removing internal strain before processing. In the block 2, a plurality of holding bolts 4 are arranged on a holding material 3, and holes 9 for inserting a heater for heating and a sensor for detecting temperature (hereinafter simply referred to as a heater and a sensor) are provided at an upper end portion of the holding bolts. 9A
The heater and the sensor insertion plate 5 on which 9B ... and 10.10A. The laminated plates 6 and 7 are sequentially stacked and fixed on the upper surfaces of the heater and the sensor insertion plate. Heater insertion holes 9, 9A, 9B ...
, And the contact plate 8 having the sensor insertion holes 10, 10A ... Are fixed, and a plurality of screw holes 18A and through holes 18 are alternately provided in the lower portion.

An adjusting plate 15 is attached to the lower surface of the heater and sensor insertion plate 5 with bolts 16. The adjusting plate includes an adhesive regulation and control plate (hereinafter simply referred to as a plate) 1
The contact plate 2 is brought into contact with the contact plate 13 and is fixed to the lower surface of the tip end portion with a bolt 14. The adjusting plate 15 is connected to a screw hole 18A and a through hole 18 which are alternately formed in the lower part of the contact plate 8 with an adjusting bolt 17, and a forward hole is a screw hole of 18A and a backward hole is connected to a screw hole 19 formed in the adjusting plate 15. And adjust alternately and lock plate 2 with lock nut 2
Fixed at 0.

The outer periphery of the block 2 is covered with a Teflon sheet 21 to prevent the adhesive from adhering to the contact plate 2.
It is fixed with 2 and 23, and the upper surface of the contact plate 23 is covered with a mold material 24 having a Teflon coat to prevent the permeation of the adhesive. Also, adhesive outflow prevention plates 30 and 30A (30A not shown) are symmetrically arranged at both ends of the space between the coating roller 1 and the block 2, and an adhesive from an adhesive melting and melting device (not shown) is provided above the space. A required number of transfer tubes 31 are arranged.

Dial gauges 26, 26A (not shown) are fixed symmetrically on both ends of the fixed coating roller 1, and dial gauges 26, 26A on both ends of the block 2 are fixed.
25A 25A (not shown) at the position where it abuts 26A
Place and fix. Further, bolts 34, 34A (34A is not shown) are fixed to both ends of the block 2, the other end is connected to a pneumatic cylinder 29, 29A (29A is not shown), and a holding metal fitting 33 is provided in the middle part. 33 (not shown), the required combination spacers 27, 27A (not shown) are inserted, the lock nuts 28, 28A (not shown) are inserted, and the lock nuts 28, 28A (not shown) and 35.
Lock at 35A.

Also, the heater insertion holes 9, 9A, 9B are
The sensors 10, 10A, 10B, and 10C are provided for each block by dividing them into B, C, and D blocks. The method of division is different depending on the coating width of the coating roller 1. However, in the central part of the application roller 1, the part where the adhesive is always applied has a relatively high cooling rate of the adhesive, and the control of the application temperature of the adhesive is performed in consideration of the division method and the detection method of the sensor. It is possible to always maintain the best coating temperature. Also, the wiring of each heater and sensor is bundled and covered with a cover 11, and each block A is provided with a control box (not shown).
・ B ... Display separately.

The plate 12 is mounted on the outer peripheral surface of the coating roller 1 by means of dial gauges 26, 26A, and is a spacer 27.2.
Lock nuts 28, 28 that are matched through the combination of 7A
Lock the bolts 34 and 34A with A and 35 and 35A. Combination specifier 27 according to the surface coating amount of the workpiece
Pneumatic cylinder 29 / 29A by removing the combination plate of 27A
It becomes possible to regulate the coating amount by driving, and at this time, the opening / closing degree of the plate 12 can be confirmed by visually observing the left and right dial gauges 26, 26A. Further, by removing all the combination spacers 27 and 27A at the end of the work, all the adhesive stored in the recess is easily discharged, and it is prevented that the adhesive adheres to the side surface due to the cooling of the adhesive, and the cleaning is also easy and easy. Can be implemented in

Since the constituent members of the block 2 are completely heat-treated before being processed, distortion due to heating is prevented, and since the blocks 2 are laminated and combined, the strain is concentrated on the plate 12. Since it is dispersed in each member without any restriction, the regulation and control of the coating roller 1 and the plate 12 are unchanged even if a long working time is carried out.

For this reason, when applied to not only thick products but also ultra-thin laminates and aluminum foils, the conventional 0.0
It was impossible to be less than 7 mm, but 0.03 m in this embodiment.
A coating amount of about m can be continuously carried out. Therefore, the amount of adhesive used can be easily implemented only by changing the combination of the combination spacers 27 and 27A for selecting the application amount required for each work.

[0029]

As described above, according to the present invention, the adhesive is temporarily stored in the upper surface concave portion by the combination of the doctor roller as well as the coating roller having the heater therein, and the gap between the both rollers is adjusted to regulate the coating amount of the adhesive. The adhesive was applied by controlling the application rollers, but both rollers were relatively large and the heaters were installed inside, so there was a lack of uniform stabilization of the application amount due to the distortion of both rollers. The coating thickness was the limit.

For this reason, the doctor roller is eliminated from both rollers, and instead a block is formed and arranged so as to face the coating roller, and the adhesive is temporarily stored in the intermediate recess. In addition, the block is subjected to heat treatment to remove internal strain before processing to completely remove the internal strain of the material, and each member is laminated to absorb the occurrence of strain due to heating and cooling of the block to each other. Concentration of strain is eliminated on the plate that is dispersed and regulates and adjusts the gap with the coating roller.

Therefore, as described above, the conventional coating amount is 0.0
Although the limit was up to 7 mm, the minimum value of 0.
It was possible to regulate the coating amount to around 03 mm. Therefore, it is possible to easily secure a uniform coating surface even on ultra-thin products, that is, laminates and aluminum foils, which have been problematic in the past, and determine the amount of adhesive applied to thick and thin products. Therefore, it is possible to change the amount of the adhesive, so that the consumption of the adhesive can be minimized to secure a perfect coated surface, and it is possible to completely prevent the occurrence of wrinkles on the coated "uneven" adhesive surface.

Further, dial gauges are fixed symmetrically to both upper ends of the fixed coating roller, metal fittings are attached to both upper ends of the block, the plate is brought into contact with the coating roller, and the dials are sequentially adjusted by adjusting bolts. It is easy to secure the required amount of coating by using the symmetric combination spacer depending on the combination spacer combination method after confirming the adjustment accurately with the scale of It becomes possible.

Conventionally, the coating amount is determined by visual and tactile sensation of the coated surface, and most of the time, it is the "intuition" experienced by a worker on site.
There was a place that depended on. The present invention has the greatest effect in accurately determining the coating amount without relying on the conventional "intuition" by changing the combination of the combination spacers while checking the scale of the dial gauge.

Further, the drive roller is abolished and each member subjected to sufficient heat treatment for removing internal strain is stacked to form a block, and the adhesive is temporarily stored in the space with the coating roller, and the stored adhesive is adhered. A heating heater for heating the adhesive and maintaining an optimum bonding temperature and a sensor for detecting the temperature are provided in each block to enable the adhesive to be kept warm. However, even if heating is applied to the block and distortion occurs due to the stacking of each member, each member has the effect of absorbing and dispersing the distortion. The plate that regulates and adjusts the amount is prevented from being affected by distortion to the minimum, so even if the work is continued for a long time, it is possible to completely prevent uneven coating amount on the coated surface and coating "unevenness". Becomes

Although it has been impossible to change the coating amount by changing the type of the workpiece during the conventional work, and it has been impossible to easily and accurately change the unnecessary coating amount, the apparatus of the present invention. By providing the above, the coating amount can be changed by visually checking the dial gauge by changing the combination spacers on both sides, and the coating amount can be changed by changing the workpiece during the work.

By providing the apparatus according to the present invention, the apparatus for applying the hot melt adhesive is downsized, and it is possible to regulate and adjust the application amount to about 0.03 mm required for long ultra-thin laminates and aluminum foil. In addition, it is possible to uniformly coat the coated surface.

Further, the application amount can be changed depending on the type of the work piece by simply changing the combination of the combination spacers and checking the scale of the dial gauge accurately and promptly. Consumption can be prevented, and the effect is particularly remarkable.

[Brief description of drawings]

FIG. 1 is a schematic side view of a cross section of a main part of the apparatus.

FIG. 2 is a schematic side view of the entire device.

FIG. 3 is a left perspective view of a heater and a sensor insertion plate.

FIG. 4 is a right perspective view of a heater and a sensor insertion plate.

FIG. 5 is a schematic partial cross-sectional view of an A-A ′ visual adjustment plate mounting adjustment method.

[Explanation of symbols]

1 coating roller 2 blocks
3 Holding material 4 Fixing bolt 5 Heater and sensor insertion plate 6 Laminated material 7 Laminated material
8 Counter plate 9, 9A, 9B, 9C ... Heater insertion hole 10, 10A, 10B, 10C ... Sensor insertion hole A, B, C, D Heater and sensor combination
11 Focusing Cover 12 Adhesive Coating Amount Control Plate (Plate) 13 Dowel 14 Bolt
15 Adjustment plate 16 Bolt 17 Adjustment bolt
18 through hole 18A screw hole 19 screw hole
20 Lock Nut 21 Teflon Sheet 22/23 Dose 24 Teflon Form 25 / 25A Lock Nut 26 / 26A Dial Gauge 27 / 27A Combination Spacer 28 / 28A Lock Nut 30 / 30A Adhesive Discharge Prevention Plate 31 Transfer Pipe 33 / 33A Holding Metal fittings 34 / 34A bolts 35 / 35A lock nuts

Claims (2)

[Claims] 1. A holding material 3 for a block 2 is fixed to dispose the block 2 at a position facing the coating roller 1, and a plurality of fixing materials are fixed to the holding material in accordance with the coating width of the adhesive. A heater and a sensor insertion plate in which a bolt 4 is provided, and a heater and a sensor insertion hole 9, 9A for detecting a temperature, and a sensor insertion hole 10, 10A, 10B, 10C are formed on the upper end portion of the fixing bolt. 5 is fixed, and the laminated plates 6 and 7 are stacked and fixed on the upper part of the heater and the sensor insertion plate. An adjusting plate 15 is attached to the lower surface of the heater and the sensor insertion plate 5 with an adjusting bolt 16 in which an adhesive regulating plate 12 is brought into contact with a contact plate 13 and fixed with a bolt 14. On the other hand, laminated plates 6 and 7
A plate 18 having a heater insertion hole, 9.9A, ... And a sensor insertion hole 10, 10A. The screw holes 18A and the through holes 18 are alternately arranged on the lower part of the plate, and the screw holes 19 are arranged on the adjusting plate 15.
The adjustment plate is pulled by the adjustment bolt 17 and the pressing force is adjusted to adjust the gap between the application roller 1 and the plate 12 fixed to the adjustment plate 5. 2. A combination spacer 27, wherein dial gauges 26, 26A abutting against the receiving members 25, 25A symmetrically arranged on the upper part of the block 2 of claim 1 are arranged at both ends of the fixed coating roller 1. -Adjustment plate 15 via 27A
Adjust the plate 12 fixed to the
・ Adjust the thickness of 27A to regulate the coating thickness, and at the end of the work, drive the pneumatic cylinders 29 ・ 29A attached to retract the block 2 and discharge the residual adhesive that is temporarily stored. The apparatus for regulating and controlling the amount of adhesive applied according to claim 1.