JPS6143466B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for cutting a carpet constructed by laminating various materials.

For example, a long carpet has a structure in which an intermediate layer such as rubber or coal tar is provided at an appropriate thickness on a base fabric, and a surface layer material with piles planted on the base fabric is layered on top of this intermediate layer. It is a product that is cut out into tiles from objects.

The conventional method of cutting out tile-shaped carpets from a long carpet as described above is to cut out an intermediate carpet of an appropriate size from the long carpet by punching or other means, and then cut out a tile-like carpet of a predetermined size from this intermediate carpet. I am trying to cut multiple pieces of carpet tiles.

If the dimensional accuracy of carpet tiles is not accurate,
When used, the seams and patterns may become uneven or bent when lined up.

Therefore, in order to improve the dimensional accuracy of the tile carpet, the intermediate carpet 1 is formed larger than the plurality of tile carpets 2, as shown in FIG. I try to cut it out accurately.

For this reason, in the carpet cutting process, there is a problem that a lot of loss occurs particularly in the length direction, making it extremely uneconomical.

In addition, in the conventional cutting process, the longitudinal cutting was first performed, and then the horizontal cutting was performed in a separate process, which required a worker for each process, increasing processing costs. It was becoming a factor.

In addition, carpet cutting is performed using a disc knife, but when driven at a constant rotation speed, the circumferential speed of the peripheral cutting edge changes due to changes in the diameter due to wear during use, and the cutting performance also fluctuates. Therefore, there was a problem in that it was extremely difficult to control the rotational speed of the blade.

This invention was made in order to solve the above-mentioned problems, and it is possible to cut the carpet without any loss in the length direction, save labor in cutting work, and use a disc cutter. The purpose is to provide a cutting method that allows easy rotation control.

Embodiments of the present invention will be described below with reference to FIGS. 2 to 6.

FIG. 2 shows an apparatus for continuously cutting out tile carpets from a long carpet.The long carpet A is conveyed by an endless conveyor 11, and while being conveyed by this conveyor 11, the long carpet A is conveyed by an endless conveyor 11. At this time, the cutter 12 and the lower blade 13 are used to cut the desired number of pieces along the longitudinal direction.

A timing adjustment roll 14 and a feed roll 15, which are formed by a pair of upper and lower rolls, are arranged in front of the transport body 11 in the sending direction with an appropriate distance between them. It's starting to slacken.

A roll 16 for detecting the slack amount of the carpet is arranged between the front and rear rolls 14 and 15 so as to be able to move up and down, and a feed roll 15 can be moved in the left and right width direction to correct the direction in which the carpet is fed.

In front of the feed roll 15 located in the front and rear,
A cutting device 17 for cutting the carpet in the width direction into square tile carpets B is disposed.

The cutting device 17 includes a positioning means 18 for holding the leading end of the carpet in a fixed position, and a positioning means 18 for holding the leading end of the carpet in a fixed position.
The cutting means 19 cuts the carpet held by the carpet in the width direction.

As shown in FIG. 3, the positioning means 18 has rulers 21, 22, 23 arranged on three sides of the bottom plate 20 into which the carpet A enters, and one of the rulers on both sides is a fixed ruler 21 and the other is a fixed ruler 21. A movable ruler 22 is moved forward and backward by a cylinder 24, and the remaining ruler 23 is moved up and down by a cylinder (not shown).

A carpet detector 25 such as a photoelectric type or a lever switch is attached to the movable ruler 22 and the lifting ruler 23, and after each detector 25 detects the carpet,
This actuates the cutting means 19.

Projecting rolls 26 are provided above and below the bottom plate 20, and when the ruler 23 descends after cutting the carpet, the rolls 26 rotate and send the tile carpet B forward.

As shown in FIGS. 4 and 5, the cutting means 19 includes a cutter 27 disposed in the lower width direction of the carpet A, and a cutter 27 disposed in the upper part of the carpet A, and a cutter 27 disposed in the width direction of the carpet A. It is composed of a disc cutter 28 that moves along the blade.

The lower blade receiver 27 houses a pair of lower blades 29 on both sides in an outer frame 30, and is supported by a ball 31 to allow the lower blades 29 to move freely in the longitudinal direction.

The disc cutter 28 is supported by a holder 32, and the lower part of the outer circumference fits between the lower blades 29, and is pressurized from the upper part by a cylinder and a spring (not shown).
As shown in FIG. 5, both sides of the cutting edge come into pressure contact with the cutting edges of the lower blades 29 on both sides, and as the lower blade 29 moves, the disc blade 2
8 is designed to rotate.

The lower blade 29 is connected to the endless chain 33 as shown in FIG.
It is adapted to move by.

The rotational speed of the disc knife 28 is such that extra rotation is added to the rolling rotation caused by the disc knife 28 moving on the carpet A, so that the disc knife 28 can smoothly cut the carpet A. The lower blade 29 is adapted to move at a speed that gives the moving disc blade 28 an extra rotation, for example, an accelerated rotation of about 7% to 10%.

In this way, the circumferential speed of the cutting edge of the disc knife 28 remains constant even if the diameter changes, making it possible to always maintain the same cutting effect.

The disk cutter 28 and the lower blade 2 sandwiching both sides of its lower part
7, as shown in FIG. 5, they are in pressure contact with each other, and the movement of the lower blade 27 increases the speed of the disk cutter 28, so there is no slippage at the contact area between the disk cutter 28 and the lower blade 27. .

Further, on both sides of the cutting means 19, presser means 37 are provided to clamp the carpet with a roll 35 and a presser foot 36 to prevent it from moving during cutting.

The cutting method of the present invention is carried out using the cutting device as described above, and the long carpet A is cut into a plurality of pieces in the longitudinal direction by the cutter 12 and the lower blade 13 while being fed by the conveyor 11. .

After cutting, the carpet A slackens between the timing adjustment roll 14 and the feed roll 15, and when the detection roll 16 detects a predetermined amount of slack, the feed roll 15 operates to feed the carpet into the positioning means 18. When the carpet A is supplied to the fixed position, the feed roll 15 stops,
The carpet A conveyed by the conveyor 11 becomes slack between the rolls 14 and 15.

When the carpet A is fed into each of the rulers 21, 22, 23 of the positioning means 18, the holding means 37 operates to clamp both sides of the cutting position.

Thereafter, the lower blade 29 and the disk blade 28 are operated to cut the carpet A from one side edge to the other side edge.

This cutting is performed by the movement of the disk cutter 28 and the lower blade 29 that moves in the opposite direction to the disk cutter 28. Rotation is applied through the contact portion due to the movement of the disc blade 28, so that the disc blade 28 rotates at a faster speed than the rolling rotation, and performs push-cutting and pulling-cutting functions at the same time, cutting the carpet smoothly. .

When the cutting is completed, the holding means 37 is opened, the ruler 23 is lowered, the ejecting roll 26 is activated, the tile carpet B is sent forward, and the lower blade 29 and disc blade 28 return to their original positions and are cut again. The feed roll 15 is operated to supply the carpet and the above operation is repeated. In the illustrated case, the carpet tile A is cut in the longitudinal direction by cutting both ends and cutting out one piece.

As described above, according to the present invention, a disk cutter and a receiver are used, the receiver is moved in the opposite direction to the moving direction of the disk cutter at the contact portion of the disk cutter, and the disk cutter is moved by the movement. Since it was made to rotate at a faster speed than the rolling rotation that occurs, the disc cutter is
By simultaneously carrying out push-cutting and pulling-cutting functions, the carpet can be cut smoothly, and wear and tear between the disk cutter and the receiver cutter is eliminated, and the durability of the cutter can be improved.

Further, even if the diameter of the disc knife changes due to wear, the peripheral speed of the cutting edge does not change, so the cutting effect can always be kept constant.

Furthermore, if the cutting method of the present invention is adopted for cutting carpet in the width direction, it becomes possible to automatically cut out tile carpet from a long carpet, and moreover, the cutting can be performed continuously with high precision. Therefore, there is no cutting loss, and cutting costs can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing conventional tile carpet cutting, Fig. 2 is a longitudinal sectional front view of an apparatus for carrying out the method of the present invention, Fig. 3 is a plan view of the main parts of the same, and Fig. 4 is the same as the above. FIG. 5 is an enlarged vertical sectional side view of the same as above, and FIG. 6 is a plan view showing the state of cutting out the tile carpet. 17 is a cutting device, 19 is a cutting means, 27 is a receiving blade, 28 is a disc blade, 29 is a lower blade, 30 is an outer frame,
33 and 34 are endless chains.

Claims (1)

[Claims] 1. Using a disc knife that can move freely in the carpet cutting direction and rotate freely in the moving direction, and a long linear receiving knife whose longitudinal direction is also movable in the carpet cutting direction, the disc knife and the receiving knife are rotated in a circle. The receiving blade is arranged so that it meshes with the peripheral edge of the plate knife and cuts the carpet at this meshing part, and at the same time the disc knife is moved in the direction of cutting the carpet, the receiving blade is moved in the opposite direction to the disc knife. The disk cutter is moved at a speed faster than the circumferential speed of the contact part during movement and rotation caused by the movement of the cutter, and rotation is applied to the disk cutter through the contact part by the movement of the receiving cutter, causing the disk cutter to rotate. A carpet cutting method characterized in that the carpet is cut using the disc cutter and the receiving cutter by rotating at an increased speed than the dynamic rotation.