CN88100944A

CN88100944A - The apparatus for cutting sheet material of flexible fabric

Info

Publication number: CN88100944A
Application number: CN88100944.XA
Authority: CN
Inventors: 吉田有也
Original assignee: By Nick Corp
Current assignee: By Nick Corp
Priority date: 1987-02-26
Filing date: 1988-02-26
Publication date: 1988-10-26
Also published as: JPS63212492A; WO1988006512A1; KR890700445A; JPH0450158B2; CN1014332B; KR930010151B1

Abstract

Applicable to the device for cutting thin sheets of flexible fabrics, there are upper and lower cutters that can move up and down in front of the feed roller, and an air jet hole is provided in the passage where the thin sheets are conveyed to make them float by jetting air. There is a baffle above the jet hole to limit its floating height, and a receiving body that can be adjusted according to a certain size is installed in front of the upper and lower cutters. The sheet material is cut off, and at the same time, the cut sheet material is received by the receiving plate installed under the receiving body and can move forward and backward freely. There is no deviation in the cut-off products, and there is no need to reserve a margin in advance.

Description

Thin sheet material cutting device for flexible fabric

The invention relates to a thin sheet material cutting device of flexible fabric, which is suitable for cutting the fabric, in particular for cutting the flexible fabric or the cuffs, the collars and the lower hems of clothes, and rubberized fabric, soft felt or other flexible fabrics used on the required parts of other clothes.

In conventional flexible fabric cutting devices, particularly for cutting fabrics in short lengths, there are sheet material cutting devices that use a cutter to cut the fabric, which is simply supported by a roll.

However, in the conventional fabric cutting device, the fabric supported on the roller is fed out by the feed roller, and wrinkles are generated in the process that the fabric is fed out and reaches the receiving body with a certain size, and if the fabric is stretched while holding the front end of the fabric by the roller provided separately, the fabric is finally elongated due to the soft property of the fabric itself, and if the fabric is cut in this state, the elongated size of the cut fabric is shrunk and does not reach the predetermined size, so that the cut fabric is deviated in size, becomes defective, and becomes impossible to sell as a product.

The object of the present invention is to eliminate the above-mentioned disadvantages.

Thus, there is provided a sheet material cutting device for a flexible fabric, which can cut a fabric of a predetermined size without shortening or stretching, particularly cut a flexible fabric or a cuff, a collar, or a hem of clothes, and apply a fabric adhesive to a desired portion of other kinds of clothes, thereby preventing the occurrence of defective products and efficiently producing products of a predetermined size.

The invention discloses a device for cutting a thin sheet of flexible fabric, which is characterized in that: a feeding roller 2 is arranged on the machine table 1, an upper cutter 9 and a lower cutter 3 which can move up and down are arranged in front of the feeding roller 2, in the passage through which the fed flexible sheet material 8 passes, there are provided gas ejection holes 5 for ejecting gas upward for floating the sheet material 8, an upper receiving plate 6 is installed above the gas ejection holes 5 with a suitable gap so as not to float the sheet 8 over a necessary height, and the sheet 8 fed to the feed roller is floated by the gas ejected from the gas ejection holes 5, sent between the upper cutter 9 and the lower cutter 3 in front, and in front of the upper cutter 9 and the lower cutter 3, a receiving body 7 which can be adjusted according to a certain size is arranged on the machine table 1, when the thin sheet material 8 reaches the receiving body 7, the upper cutter 9 and the lower cutter 3 are engaged with each other to cut the sheet material 8, and the cut sheet material 8 is retained by a receiving plate 11 which is fixed below the receiver 7 and can be advanced and retracted.

In the present invention, for example, the sheet material 8 as a rubberized stretchable flexible fabric can be conveyed by the roller 13 to which a plurality of pins are attached without nipping (the roller 13 to which the pins are attached can be replaced by a drooping or other conveying means), and the sheet material 8 fed out through the roller 2 floats up under the influence of the ejected gas when passing over the gas ejection holes 5 during conveyance. Then, the floating sheet 8 is brought into contact with the upper receiving plate 6, passes between the upper cutter 9 and the lower cutter 3, and the leading end of the sheet is placed on a receiving plate 11 provided below the receiving body 7 and capable of moving forward and backward while being abutted on the receiving body 7 for regulating a predetermined size, and when the upper cutter 9 is lowered, the sheet 8 is cut into a predetermined size, and immediately after the cutting, the receiving plate 11 is moved backward, and the sheet 8 cut into a predetermined size is accumulated on a belt conveyor 12 and moved to the take-out direction.

The upper cutter 9 is guided to move up and down by a groove 30 provided on the machine table 1. In addition, the receiving plate 11 is moved forward and backward by a rod 16 movable upward and backward, and when the upper end of the latter swings forward and backward, the receiving plate 11 is moved forward and backward in the left and right direction. The vertical movement of the upper cutter 9 and the swinging of the rod 16 can be performed by the movement of the eccentric shaft 15 and the grooved eccentric cam 18. Such movement can then be entirely driven by the power source 14 (e.g., a motor).

The embodiments are described in detail below with reference to the accompanying drawings.

In the present invention, a pair of feed rollers 2 for feeding a sheet material forward are provided in a machine table 1, and a needle-like roller 13 for preventing the sheet material 8 from sliding on the feed rollers 2 and feeding the sheet material at the same time is provided. In addition, a lower cutter holder 4 for mounting the lower cutter 3 at the front end thereof is installed in front of the feed roller 2, and a plurality of air injection holes 5 are formed in the inner upper surface of the lower cutter holder 4 and an upper receiving plate 6 is disposed above the latter. The lower cutter support 4 is internally hollow and compressed air from the compressor 10 is introduced via a gas line 31 into the inner cavity of the lower cutter support 4, which in turn becomes the means for ejecting air through the ejection holes 5. Further, an elongated hole 32 and a screw 26 are provided in front of the lower cutter 3, and the front end position of an adjustment lever 33 having a set length can be adjusted by these, and a receiver can be fitted to the front end of the adjustment lever 33 to determine the front end position of the sheet 8. A receiving plate 11 is provided below the receiving body, and the receiving plate 11 is configured so as to be supported on the lower surface of the sheet 8 whose front end is in contact with the receiving body 7, and when the sheet 8 is cut, the sheet 8 can be dropped downward by the backward retreat of the receiving plate 11. Below the receiving plate 11 is located the front end of a belt conveyor 12 outside the machine 1, which transports the cut sheets 8 to a packing position for packing in a pile.

Fig. 1 and 4 show an example of the operation mechanism of the upper cutter 9 and the receiving plate 11, and the upper cutter 9 is guided into the groove 30 to move up and down by the action of a power source 14 such as a motor transmitted to the shaft 17 of the upper cutter 9 through the eccentric shaft 15 and the rod 16. The receiving plate 11 is configured to convert the forward and backward movement of the operating rod 21 into the forward and backward movement of the receiving plate 11 by the movement of the roller in the groove of the grooved eccentric cam 18 via the link device 20 and by movably inserting a lug 23 (fig. 3) provided on the receiving plate 11 into an elongated hole 22 of the operating rod.

As for the configuration of the belt conveyor 12, for example, a form in which the upper body on which the belt conveyor 12 is mounted can be moved up and in parallel by the connecting device 24 is preferable. Such a connecting device 24 can be moved up and down and positioned by, for example, a hydraulic cylinder.

In fig. 1, 27 is a support rod slidably inserted into a guide 28 installed in the receiving plate 11 to allow the receiving plate 11 to move forward and backward, and 29 is a tension shaft to stretch the sheet supplied to the needle-bearing roller 13.

With the above-described configuration of the present invention, the flexible sheet material 8 can be supplied to the feed roller 2 via the needle-bearing roller 13, and the sheet material 8 is restricted to be fed out in a predetermined size. When the sheet material 8 is fed by the feed roller over the lower blade holder 4, although the sheet material floats up by the gas ejected from the gas ejection holes 5 provided in the lower blade holder 4, the upper receiving plate 6 is provided above the gas ejection holes 5, and hence the sheet material can be prevented from being wrinkled. When the leading end of the sheet 8 conveyed in this manner reaches the receiver 7 by the lower cutter, the upper cutter is lowered to cut the sheet 8. The timing means for lowering the upper cutter 9 is a means for adjusting the speed by a gear mechanism or the like when the power source 14 of the feed roller 2 and the upper cutter 9 is used as a common power. Further, when other devices are employed as the power source, such a mechanism may be considered: the timing of the engagement of the sheet material 8 with the receiver 7 is detected by various sensors of light, static electricity and contact type, and the power source 14 is rotated to operate the upper cutter.

Then, the receiving plate 11 is moved backward while or after the sheet material is cut by the upper cutter, and the cut sheet material 8 falls down while being sequentially overlapped on the belt conveyor 12 located below from the receiving plate 11. At this time, the cut sheets piled one by one on the belt conveyor 12 are gradually increased in thickness and come into contact with the lower surface of the receiving plate 11, and the height of the belt conveyor 12 is lowered by the hydraulic cylinder 25. The height adjustment work of the belt conveyor 12 preferably corresponds to the number of cutting operations. After a certain amount of sheet material has been cut, the belt conveyor 12 is started to pack the cut product with a rope.

When the width of the sheet material 8 needs to be changed, the screws 26 are loosened, the adjustment rods 33 are adjusted along the elongated holes 32, the receiver 7 is brought to a desired position to determine a predetermined size, and then the screws are tightened, and the subsequent steps are the same as those described above. However, it is necessary to adjust the timing relationship of cutting by the upper cutter. Therefore, if the cutting is performed at a timing before the expansion in order to expand the cutting width, the cutting should be performed before the sheet material 8 reaches the receiver 8. Furthermore, if the optical, electrostatic, and contact sensors are combined mechanically as a detecting mechanism (for example, such sensors are mounted on the receiver 7 to control the power source) for timing adjustment, the adjustment is not necessary and the labor is saved.

As described above, according to the present invention, since the fabric is not wrinkled when the fabric is cut in a short width, or the fabric end is not required to be stretched when the rubberized fabric is cut, the fabric can be easily cut at a constant length by the gas discharged from the gas discharge holes as in the conventional case, and the cut fabric can be cut without variation in length and without cutting the material of the fabric by an excess amount. Thereby reducing the manufacturing cost. Further, the width of the sheet material can be easily changed by changing the position of the receiver 7, and the cut sheet material is transported and packed in piles on the belt conveyor, so that the cut sheet material can be easily handled in the next step.

The drawings illustrate an embodiment of the present invention, fig. 1 is a schematic front view illustrating an embodiment of the present invention, fig. 2 is an oblique view of the vicinity of a feed roller part, fig. 3 is an oblique view illustrating the vicinity of a receiving body and a switchgear, fig. 4 is an oblique view illustrating a power mechanism of a cutter and a switchgear of the present invention, and fig. 5 and 6 are schematic views illustrating a state where a fabric is cut off.

Numbering in the figures: 1, machine table, 2, feed roll, 3, lower cutter, 4, lower cutter support, 5, gas jet hole, 6, upper bearing plate, 7, receiver, 8, sheet, 9, upper cutter, 10, compressor, 11, bearing plate, 12, belt conveyor, 13, roller with knitted fabric, 14, power source, 15, eccentric shaft, 16, rod, 17, shaft, 18, grooved eccentric cam, 19, roller, 20, linkage arrangement, 21, work bar, 22, elongated hole, 23, lug, 24, connection arrangement, 25, hydraulic cylinder, 26, screw, 27, support bar, 28, guide, 29, shaft, 30, groove, 31, gas pipe, 32, elongated hole, 33, adjusting rod.

Claims

1. A device for cutting a thin sheet of flexible fabric, characterized by the following: a feed roller is provided on a machine table, an upper cutter and a lower cutter are provided in front of the feed roller so as to be movable up and down, an air ejection hole for ejecting air upward for floating a sheet material is provided in a passage through which a fed flexible sheet material passes, an upper receiving plate is provided above the air ejection hole with an appropriate gap so as not to allow the sheet material to float over a necessary height, the air ejected from the air ejection hole is carried by the sheet material fed from the feed roller, a receiving body adjustable in a predetermined size is mounted on the machine table in front of the upper cutter and the lower cutter, and when the sheet material reaches the receiving body, the sheet material is cut by the engagement of the upper cutter and the lower cutter, and the cut sheet material is received by the receiving plate which is provided below the receiving body and is capable of freely moving forward and backward.