JPS62270332A - Production unit for base material for abrasive cloth and paper - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] 3. Detailed description of the invention The present invention relates to an apparatus for manufacturing a base material for coated abrasive paper.

Conventional iIf abrasive paper mounts or base fabrics have their own properties as well as glues (synthetic, natural, and
There may be cases where the characteristics of the abrasive cannot be fully demonstrated depending on the type of material (J-finger type, rubber, etc.).

For example, a circular Of polishing board uses an alkanized fiber board as a mount, and the strength of the surface of this mount is inferior to the strength of the synthetic (support) material used for adhesion, so if you try to adhere it strongly enough, This causes surface layer peeling, which in turn causes a decrease in strength, causing the abrasive grains to fail and become unusable. Further, in a polishing machine made only of this mount, there is a problem in that the mount gradually becomes fatigued during use and curls back to the opposite side of the polishing cloth, making polishing impossible or making polishing work difficult.

By the way, in the process of baking abrasive grains in disc taizō, the maximum furnace temperature is generally 120°C to prevent thermal deterioration of the mount.
It will last about 21 meters at ~130°C, but if you use a mount with glass fiber glued, it will last at ~150'C.
Even if baked at 170'C for about 2 hours, the mount is reinforced by the heat resistance of glass fibers, so a strong sharpening disk can be manufactured without any fear of breakage during use.

Based on the knowledge possessed by the present inventors, the present inventor proposes an apparatus for efficiently and inexpensively manufacturing a strong base material for coated abrasive paper that prevents not only paper fatigue but also grain shedding and has excellent cutting properties.

An example of implementing the apparatus of the present invention will be described below.

FIG. 1 is a schematic illustration of the apparatus of the present invention, and FIGS. 2A and 2B are partial detailed views of the main part of the winding means.

Reference numeral 1 denotes a fiber mount or an abrasive cloth raw material (hereinafter referred to as mount) having a fixed width dimension (approximately 140 to 150α), which is wound around the beam 2. 3a and 3b are beam stands rotatably supported in the middle, 4 is a feed roll, and 5 is a roll coater between a pair of upper and lower rolls 5a and 56 which are rotated by the drive of a drive device (not shown). As the base material passes through, the size liquid S (phenol t!
l 1m ) is attached to the base material (in the illustrated example, the bottom surface).

6 is a reinforcing sub-material made of glass fiber non-woven fabric that faces the direction in which the base material is fed out and has the same width dimension; 7a;
7b is a beam stand that rotatably supports it in the middle, 8 is a feed roll, and 9 is a dipping tank that guides the reinforcing sub-material 6 into the tank through 10a, 10b, and 10r. By passing through the reinforcing base material 6, the size liquid S (phenol-11) is impregnated and adhered to the upper and lower surfaces of the reinforcing base material 6.

11 is R machine, and it was impregnated and attached to the reinforcing sub-material 6)
The illumination is narrowed down between a pair of upper and lower rolls lia and 11b so that a certain condition is met.

Reference numeral 12 denotes a conveying means that uses a stand (not shown) at a certain height on the slope to enable conveyance over a certain distance in the horizontal direction. is provided, and the conveyor belt 12d installed between both rolls is provided with a large number of through holes, so that the base material 1 and the reinforcing sub-material 6 can be conveyed by rotation in the direction of arrow (A). In the middle, the top and bottom are laminated, and it is attached to the seagull by suction as it travels.

Reference numerals 13a and 18b denote a pair of upper and lower photocell detectors gg, which, via guide rolls 14 and 15 provided at front and rear positions sandwiching these, detect the base material 1 and the reinforcing sub-assembly that are suction-adhered while being conveyed over the conveyor belt 12d. In order to allow the laminated material 16 of the material 6 to be wound up with no tension by the winding means described below, the laminated material 16 is loosened by a certain amount of one head circumference. As the long β decreases, the upper light 'hL tube 13
When a is activated, the winding beam of the winding means described below rotates a little, but if the slack length e is too large, 'f13b' is activated in the lower light, and conversely, the winding beam is rotated slightly. This is done so that the rotation is slightly slowed down.

The winding means 17 is a product of the base material 1 and the reinforcing sub-material 6 on the winding beam 18. It is designed to accommodate the entire roll of the work material 16, and a roll plate 19 such as an R4+7 millet steel plate roll is provided so as to be rotatable via beam stands 20a and 20b, so that the rotation of the winding beam 18 is prevented. At the same time, the laminated material 16 is pulled out to the beam 18 side and wound up into +JM material 1 material color 6, so that the laminated material 16 is wound up in a sandwich manner, that is, while being sandwiched between the roll plates. (See Figure 2, A and B) A large number of coil springs 21 are installed at appropriate intervals on both sides of this gate along the length of the roll plate surface using holes drilled at appropriate intervals. This is useful for smoothly forming an arc shape with a certain gap when the roll plate is wound onto the width beam 18 side, and the laminated material 16 is wound in an orderly manner without tension. It becomes something that can be done. Originally, the rotation of the take-up υ beam 18 is supported by the drive of the motor 22 via the reducer 23 and the chain 25 that engages with the 24.1 core 96 fixed to the output shaft. This is done by rotating the top end 26 which is soft attached to the shaft, and at this time the motor 22 operates in conjunction with the operation of the upper and lower photocells 1.3"S13' of the detection means, that is, the upper photocell 13a is operated. When the winding 9 beam 18 rotates a little slower, the lower photocell 13
When it operates, it is made to be a little faster.

The device of the present invention has the above-mentioned configuration, in which the base material 1 is continuously pulled out and the size liquid is applied to one side thereof, while the reinforcing auxiliary material 6 such as glass fiber non-woven fabric is also continuously applied in the opposite direction. A certain amount of size liquid is applied to the upper and lower surfaces using a marker pulled out by K, and the latter reinforcing auxiliary material 6 is combined with the upper and lower surfaces of the former size liquid adhering surface to efficiently produce a continuous laminated material. Let's do what we do.

In the present invention, the laminated material 16 wound up continuously between the roll plates 19 is heated and dried in a drying oven in that state to form a base material product. Note that when the base product is taken out from between thin sheet steel plates, it is cut into an appropriate shape, or it is shipped in a roll-wrapped shape, and abrasive grains are baked onto the surface to form the final product. It will become.

As described above, the apparatus of the present invention stacks the base material and the glass fiber reinforcing material vertically so that the directions in which they are fed are opposed to each other, and immediately manufactures a continuous sheet product, which reduces the unit cost of the product. It is something that makes a contribution. Furthermore, the arrangement of equipment is effective and does not require a large amount of space, and it is possible to immediately respond to the quality demands of the market and to achieve uniform quality. At this time, flexibility [for which the particle size of the glue used (usually 10,000 cp)]
By Glue t3i! Adjusting the degree of L and adding a clause I
This can be easily done by adjusting the amount of d. Specifically, the higher the particle size of the glue, the less it permeates into the fibers?
It is European, and the more glue there is, the harder it becomes.

Experiments have shown that the product manufactured by the present invention has about twice as many grains as the conventional product, and has twice the cutting properties due to its stiffness.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of the apparatus of the present invention, and FIG. 2 is a partial detailed diagram of the main part of the winding means, with A being a top view and B being a plan view.

Claims (2)

[Claims] (1) A base material such as a fiber mount or an abrasive cloth of a certain width wound around a beam is fed out from the beam stand, and a reinforcing material such as glass fiber of the same width is fed from the opposite direction to the beam. Roll out from the stand,
Thin sheet steel sheets that are formed into a bonded laminate by adhering glue to each and running both in a laminated state on a conveying means, and then having a width slightly larger than the width of the laminate. 1. An apparatus for producing a base material for abrasive coated paper, characterized in that it is configured to be wound together with a roll plate such as a roll. (2) The apparatus for manufacturing a coated abrasive paper base material according to claim 1, wherein a large number of coil springs are arranged at appropriate intervals on both side edges along the length of the roll plate.