JPS6236835Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a leather shaving machine used to reduce the thickness of various leathers (including leather-like products such as synthetic resins and rubber) used for shoes, bags, bags, belts, etc. The present invention relates to a waste skin removal device.

In this type of leather skiving machine, the leather is generally fed between a cylindrical knife and a presser ruler placed outside the knife, and the cylindrical knife edge rotates at high speed to scrape off the back side of the leather to reduce the thickness of the leather. However, there is a problem in that it is difficult to smoothly discharge the scraped skin because the strip of scraped skin is thrown around at high speed and tends to get tangled.

This scrap skin is removed by passing between the inner surface of the cylindrical knife edge and the feed roller, but especially when skiving flexible leather, the scrap skin scraped tends to get tangled around the feed roller. Since the leather is swung around at high speed, waste skin gets entangled between the feed roller and the cylindrical knife edge, and as a result, not only is it not possible to feed the leather smoothly, but the dimensional accuracy of the skiving thickness is disrupted. This distortion renders the skin of the product unusable, and in the case of expensive leather or large or long materials, the damage is severe. Therefore, in order to minimize the damage, the machine must be stopped frequently to check whether the waste skin is entangled, and if there is any entanglement, it must be removed, resulting in operational obstacles. There is.

In order to eliminate such obstacles, measures have been taken in the past, such as attaching a so-called soundproof plate inside the cylindrical knife that serves both as soundproofing and to remove debris. The removal effect is insufficient, and almost no effect is observed especially on flexible leather.

It is also known that a special mechanism for removing waste skin is to place an anti-entanglement member along the arcuate surface of the feed roll, but this is not a sufficient solution and a vacuum pump is used to suck out the waste skin. A method is also known, but this method has the disadvantage that it requires a large-scale device, high cost, and a large space.

The purpose of the present invention is to eliminate the problems of the conventional devices described above by using an extremely simple mechanism to remove waste skin from leather, no matter how flexible it is. Increase operational efficiency,
Another object of the present invention is to provide a peel removal device for a leather skiving machine that improves the dimensional accuracy of the leather skiving machine.

The gist of this invention to achieve the above objectives is as follows:
A leather feed roller is arranged at a small interval inside the edge of a cylindrical knife that skims leather while rotating at high speed, and the rotation axis of the cylindrical knife and the rotation axis of the leather feed roller are orthogonal to each other. In the skiving machine, a brush plate with brushes embedded therein is attached to the inner cylinder of the cylindrical knife coaxially with the rotating shaft of the cylindrical knife, and the brush rotates the outer peripheral surface of the leather feeding roller approximately in rotation of the leather feeding roller. This is a peel removal device for a leather skiving machine, characterized in that it is arranged so as to rub in the axial direction.

The present invention will be described in detail based on illustrated embodiments.

FIG. 1 is a sectional view of essential parts showing an embodiment of the present invention, and FIG. 2 is a left side view thereof. here,
The cylindrical knife 1, the barrel-shaped feed roller 2, the presser foot ruler 3 having an arcuate end surface that matches the outer shape of the cylindrical knife 1, and the soundproof plate 4 are members that have been commonly used in leather skiving machines. be. A small gap between the edge 1a of the cylindrical knife 1 and the presser ruler 3 located on the outside thereof is set to be adjustable according to the desired thickness dimension, and the gap between the inner surface of the edge 1a and the outer peripheral surface of the feed roller 2 is As shown in FIG. 2, a slight gap S is maintained between the two. In addition, the feed roller 2 is arranged so that the gap S between it and the edge 1a can be slightly enlarged.
As is well known, it is supported elastically.

Now, the raw material leather 5 is fed between the cylindrical knife 1 and the presser ruler 3 by the feed roller 2,
By the edge 1a of the cylindrical knife 1 rotating at high speed, it is skived to a thickness corresponding to the gap between the presser ruler 3 and used as a product.

On the other hand, the scraped skin 5a on the back side is pushed out from between the feed roller 2 and the inner surface of the edge 1a toward the soundproof plate 4 and discharged. However, as described above, if the leather 5 is flexible in this case, the waste leather 5a will become entangled around the feed roller 2 and become an obstacle.

In order to smoothly remove this waste skin 5a, in this embodiment, for example, as shown in FIG. 7 is attached to the front surface of the soundproof plate 4 and rotated together with the cylindrical knife 1, so that the brush 6 rubs the outer peripheral surface of the feed roller 2 substantially in the axial direction thereof. Note that the mating female screw for screwing the mounting screw 9 through the mounting hole 8 of the brush plate 7 is a conventional female screw in the center of the soundproof plate 4 in order to screw in a countersinking rod used when removing the soundproof plate 4. You can use the internal thread provided as is. Therefore, the brush plate 7 can be applied to a conventionally used ready-made leather skiving machine without any processing.
It can be installed extremely easily. Furthermore, when the brush 6 becomes worn out, the brush plate 7 can be easily replaced.

If the brush 6 that rubs the outer peripheral surface of the feed roller 2 is attached so that it can rotate together with the cylindrical knife 1, the number of rotations of the cylindrical knife 1 will be many times greater than the number of rotations of the feed roller 2. During one rotation of the feed roller 2, the brush 6 sweeps the circumferential surface of the feed roller 2 in the axial direction many times. Therefore, the waste skin 5a is completely prevented from getting entangled around the feed roller 2, and even flexible waste skin 5a can be removed without any problem, which has been proven in experiments.

Furthermore, although the embodiment shows the case where the brushes 6 are provided at both ends of the brush plate 7, a considerable effect can be achieved even if the brushes 6 are only attached to one end of the brush plate 7. However, in consideration of dynamic balance, it is preferable that the brush plate 7 be symmetrical with respect to the mounting hole 8. Hair may be implanted in a ring around the area.

The brush 6 only needs to be able to elastically rub the circumferential surface of the feed roller 2, so a flexible material such as a sponge may be used instead. If this sponge or the like is used, it can be easily adhered to the inner surface of the soundproof plate 4 or the cylindrical knife 1 with an adhesive, so that it can be easily replaced when worn.

As explained above, the skin scrap removal device for a leather skiving machine according to the present invention can remove the skin scraps without any problem, no matter how flexible the leather is to be skied, by simply adding an extremely simple mechanism to an existing device. It can bring many benefits, such as easier operation, significantly improved operational efficiency, and fewer errors in accuracy.

[Brief explanation of the drawing]

The drawings show an embodiment of the skin removal device for a leather skiving machine according to the present invention, and FIG. 1 is a cross-sectional view of the main parts thereof, FIG. 2 is a side view thereof, and FIG. 3 is a perspective view of the brush plate. It is a diagram. 1 is a cylindrical knife, 2 is a feed roller, 3 is a presser ruler, 4 is a soundproof plate, 5 is leather, 5a is scrap leather,
6 is a brush, 7 is a brush plate, 8 is a mounting hole, and 9 is a mounting screw.

Claims (1)

[Claims for Utility Model Registration] 1. A leather feed roller is disposed at a small interval on the inside of the edge of a cylindrical knife that skims leather while rotating at high speed, and the rotation shaft of the cylindrical knife and the leather feed roller In a leather skiving machine, a brush plate having brushes implanted therein is attached to the inner cylinder of the cylindrical knife so as to be coaxial with the rotation axis of the cylindrical knife, and the brushes are arranged perpendicular to the outer circumference of the leather feeding roller. A peel removal device for a leather skiving machine, characterized in that a surface is arranged so as to rub approximately in the direction of the rotation axis of the leather feed roller. 2. The lint removing device for a leather skiving machine according to claim 1, wherein the brush plate is interchangeably attached with a mounting screw.