JPH06238772A - Automatic splicing machine - Google Patents

Abstract

PURPOSE:To accurately hold shape and connecting positions of cut fabrics and to exactly connect them by raising a rear end of the connected fabric, inserting a front end of the cut fabric to its lower side, and moving the connected fabric. CONSTITUTION:The automatic splicing machine comprises a raw fabric end position measuring unit 24 for detecting front and rear ends of a raw fabric 1 cut by a cutter 3, a first holder 12 mounted in a splicing mechanism 5 to hold the rear end of the cut fabric 1 to be movable in a direction of a delivery conveyor 7, and a second holder 14 for holding the rear end of the connected fabric 1 to be adjustable at the holding position. The rear end of the connected fabric 1 is raised by the holder 14, the front end of the cut fabric 1 is inserted to its lower end, the front and rear ends of the fabric 1 are connected, and it is moved to the holder 14 while holding the rear end of the newly connected fabric 1 by the holder 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic splicing device for a bias cutter.

[0002]

[Prior art]

(1) In Japanese Patent Application Laid-Open No. 3-205133, the cut fabric is lifted and transferred from a cut position to a joining carry-out conveyor for joining, and a predetermined wrap amount is given to the joined fabric in parallel. A technique for positioning and joining is described. (2) JP-A-2-151426 and JP-A-52-1
In Japanese Patent No. 12674 and Japanese Patent Laid-Open No. 62-5844, the cut fabric is once discharged from the cutting conveyor to the joining conveyor in a free state by a chute or the like, and thereafter the end faces to be joined are detected by a sensor and the position is corrected. The technique of joining by joining is described.

[0003]

The above-mentioned prior art has the following problems. (1) The invention described in Japanese Patent Laid-Open No. 3-205133 has a complicated structure and the calculation of alignment is extremely complicated. (2) JP-A-2-151426 and JP-A-52-1
The inventions disclosed in Japanese Patent No. 12674 and Japanese Patent Laid-Open No. 62-5844 have a complicated structure similarly to the above (1), and there is a limit to correcting the position of the fabric once freed. . In particular, when the cutting angle is an acute angle such as 45 to 60 °, it is virtually impossible to make correction within the allowable range.

The present invention solves the above-mentioned problems in the prior art, and with a relatively simple structure, the shape and joint position of the cut fabric can be properly maintained, and an automatic splice can be performed reliably. The purpose is to provide a device.

[0005]

A fabric end face position device for detecting a rear end and a front end of a cut fabric (new),
1st and 2nd capable of adsorbing and holding the rear end of the same fabric and the rear end of the joined fabric (old) and moving up and down
Is provided with a holding device. The first holding device moves along the entire length of the cut fabric (new). The second holding device allows a short distance of movement and has splice bars juxtaposed.

[0006]

[Function] With the second holding device adsorbing and lifting the rear end of the joined fabric (old), the front end of the cut fabric (new) is inserted under the second holding device to insert the first and second holding devices. Lower and connect the new fabric front end to the old fabric back end using the splice bar of the second retainer.

After connecting the old and new fabrics, the second retainer releases and raises the fabric, and the first retainer holds the trailing end of the newly joined fabric while holding the second fabric with the joined fabric. Advance to the position of the retainer. When the second retaining device retains the back end of the joined fabric, the first retaining device releases the fabric and returns to its original position.

That is, the rear end of the fabric is always sucked and held by either the first holding device or the second holding device to prevent the displacement of the joining position and keep the wrap amount constant.

[0009]

EXAMPLE An example of the present invention will be described with reference to FIGS. FIG. 1 schematically shows a plane arrangement of a bias cutter to which the present invention is applied, and FIG. 2 shows an AA cross section of FIG. The original fabric (fabric) 1 to be cut in FIG. 1 is unwound by a material unwinding device arranged in the left direction (not shown), and is conveyed onto a cutting conveyor 2. A cutting device 3 is installed in the middle of the cutting conveyor 2 so as to be swingable around a rotation center 4, and a raw material (fabric) 1 is conveyed by the cutting conveyor 2 by a predetermined amount and cut. The splice mechanism 5, the fan-shaped table 6, the carry-out conveyor 7, the festoon 8, and the winding device 9 are arranged on the cutting conveyor 2 on the downstream side of the cutting device 3 in a straight line.
These devices except for can rotate while keeping a straight line about the center of rotation 10, and FIG. 1 shows an example of turning from 45 ° to 90 °.

In FIG. 2, the splice mechanism 5 is composed of a first holding device 12 which moves by a screw rod 11 in the center line direction of the splicing device, and a second holding device 14 which moves by a screw rod 13. The holding device 12 has a moving stroke (maximum when the cutting angle is minimum) covering the longitudinal width of the cut fabric, but the second holding device 1
A moving stroke 4 is sufficient to cover the range of possibility that the end surface of the raw material 1 on the side to be spliced on the cutting conveyor 2 exists.

The second holding device 14 has a plurality of rows of suction pads 15-2 arranged to lift the fabric so as not to contact the cutting conveyor 2. Further, the suction pads 15-2 in the front row of the second holding device and the suction pads 15-1 of the first holding device 12 are arranged so as not to interfere with each other. FIG. 3 shows the BB cross section of FIG. 1, 18 being the cut fabric.

At the entrance of the cutting conveyor 2, the original fabric feed roller 1
9, and the drive motor 21 is controlled by a command from the length measuring roller 20 placed on the upper surface of the original 1. On the other hand, an encoder 23 is directly connected to the shaft end of the drive motor 22 of the cutting conveyor 2, and the encoder 23 allows the cutting conveyor 2 to operate.
Is controlled. The original 1 is placed on the original feed roller 19.
There is a sufficient wrap angle and no slippage occurs between them.

First, when feeding the cutting width, the original fabric feed roller 1
9 and the cutting conveyor 2 are activated at the same time. When the length-measuring roller 20 measures the required width L1, the original feed roller 19 stops, and only the cutting conveyor 2 stops the fabric that has been cut by the required amount L3-L2 / 2 in the previous cycle.
A raw end face position measuring device 2 is provided downstream of the cutting device 3 of FIG.
4 and 25 are installed, and details of the measuring device 25 are shown in FIGS. 4 to 6.

In the raw fabric end face position measuring device 25 (24 has the same structural function), the traveling frame 26 of the cutting device 3 has a range in which the sensor 27 can cover the planned raw fabric end face position in parallel with the cutting line. It is mounted at a position where it can be moved to. The sensor 27 is supported by a bracket 28 at a position having a predetermined height L4 from the surface of the cutting conveyor 2.

The bracket 28 is slidably supported via a slider 30 on a rail 29 provided parallel to the cutting line, and is driven by a motor 31 via a screw rod 32 and a nut 33. An encoder 34 that detects the position of the sensor 27 is connected to the shaft end of the motor 31. The rail 29, the motor 31 and the like are attached to a bracket 35, and the bracket 35 is fixed to the frame 26.
The cutting motor of the cutting device 3 is shown at 36.

7 and 8 show the steps of positioning the first holding device 12 and the second holding device 14. Although the drawing shows the case where the cutting angle is 90 °, the function and operation are the same at other angles. First holding device 12
Moves backward to a position corresponding to the position of the end face measured by the raw end face position measuring device 24 during cutting and stops. If the end surface fluctuates by L5, the amount of feedback is fed back. The feed amount after the holding is the amount L7 obtained by subtracting the joining lap margin L6 from the original fabric width. Here, if the end face on the joined side fluctuates by L8, it is fed back by that amount.

On the other hand, the second holding device 14 is positioned according to the variation L8 of the end surface on the side to be joined. That is, in FIG. 8, (a) shows a normal operation, but when the end face on the side of the original fabric to be joined changes by L8 as in (b), the rear end of the fabric to be joined is Positioned by the first holding device 12 while keeping the joining lap margin L6,
If the holding device 14 is not fed back accordingly, the end face cannot be sucked or the splice bar 16
There is a problem that it is not pressed by or the end face hangs down as shown in (c), and it comes into contact with the cut fabric 18 conveyed on the cutting conveyor 2.

Of course, this variation L8 also occurs depending on the width or position of the material 1 set in the unwinding device,
An adjustable amount of height is added to the second holding device 14 to cover these amounts. First holding device 12 and second
The holding device 14 will be described with reference to FIGS. 9 to 13. First
The holding device 12 and the second holding device 14 are mounted on a rail (not shown). The suction device is attached to the frame 37 of the first holding device 12 so as to be able to swivel around a rotation center 38 by a swivel device (not shown) according to the cutting angle
The suction pad 15-1 is swung around the splice device center 41 by the link mechanism 40. Suction pad 15-1
Are attached to a common plate 42 and are vertically driven by an air cylinder 43 via a guide 44.

On the other hand, the suction pad 15 of the second holding device 14
-2 and the splice bar 16 are centered on the rotation center 46 on the frame 45 of the holding device 14, and like the holding device 12,
It is rotatably mounted via a plate 47. The center of rotation 46 coincides with the center of the splice bar 16.
The splice bar 16 is guided by the air cylinder 48.
9, the suction pad 15-2 is attached to the common plate 50, and the suction pad 15-2 is attached to the air cylinder 51.
Are driven up and down via the guide 52.

Adsorption pad 15-1 and adsorption pad 15-2
The front rows of the can be staggered for fabric delivery to hold the fabric ends at the same time, with the splice bar 16 now holding the suction pads 15-1.
Retreat in the height direction so as not to interfere with. Next, the basic operation of this device will be described with reference to FIG.

FIG. 14 is a schematic diagram corresponding to FIG.
The sector table 6 is omitted, and a splice bar 16 is added to the second holding device 14. (A) The rear end of the joined fabric 18a is suction-held and lifted by the second holding device 14. (B) The cut fabric 18 is conveyed to the splice position by the cutting conveyor 2. (C) The suction pad 15-1 of the first holding device 12 holds the rear end of the cut fabric 18 and lifts it, and at the same time, the suction pad 15-2 of the second holding device 14 descends and cuts. The front end of the formed fabric 18 and the rear end of the joined fabric 18a are joined, and the portion is crimped by the splice bar 16, so that the suction pad 15-2 and the splice bar 16 rise. (D) Fabric 1 joined by the first holding device 12
While carrying out the rear end of 8a, it carries out in synchronization with the carry-out speed of the carry-out conveyor 7. (E) The rear end of the fabric 18a stops at the joining position of the next fabric. (F) The 1st holding | maintenance apparatus 12 descend | falls, the 2nd holding | maintenance apparatus 14 descend | falls, the back end of the fabric 18a is adsorbed and hold | maintained, and the adsorption | suction pad 15-1 of the 1st holding | maintenance apparatus 12 releases adsorption | suction after that. ,To rise. (G) The first holding device 12 has the cut fabric 18
The second holding device 14 lifts the joined fabric 18a, and the next cut fabric 18 is introduced by the cutting conveyor 2 after retracting to the rear end position.

[0022]

The automatic splicing device according to the present invention is
A cutting conveyor having a cutting device for cutting the raw fabric at a predetermined angle and a spacing, a splicing mechanism provided downstream of the cutting conveyor, and a fabric arranged in the cutting direction of the raw fabric and joined by the splicing mechanism are carried out. In a splice device having a carry-out conveyor, a raw end face position measuring device for detecting the front end and the rear end of the fabric cut by the cutting device, and the splice mechanism is installed,
A first holding device that holds the rear end of the cut fabric and is movable in the direction of the carry-out conveyor, and a second holding device that holds the rear end of the joined fabric and has an adjustable holding position.
A holding device is provided, and the rear end of the joined fabric is lifted by the second holding device, and the front end of the cut fabric is inserted underneath to join the front and rear fabrics, and the newly joined fabric is joined. Since the rear end is held by the first holding device and moved to the position of the second holding device, the following effects are obtained. (1) Since the rear end of the cut fabric is held by the first holding device when the cut fabric is moved to the joining position, the shape of the fabric rear end can be kept constant. (2) By controlling the movements of the first and second holding devices by the detection signals of the original fabric end face position measuring device, the front and rear end positions of the new and old fabrics are properly controlled, and a predetermined overlap amount is obtained. Can be secured. (3) With the above (1) and (2), reliable joining can be performed. (4) The device is remarkably simplified because the cut fabric is not entirely held and moved, but only the end faces to be joined are held and the movement can be performed in a straight line. (5) Since the cut fabric is processed in a state in which the end faces to be joined are held until the joining is completed after being carried out by the cutting conveyor, the state of the end faces to be joined of the cut fabric is detected. The complete joining operation can be carried out without complicated devices such as the device and the device for compensating accordingly, thus simplifying the device.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a bias cutter according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is a C view of FIG. 1 showing a raw end face position measuring device.

FIG. 5 is a side view of FIG.

FIG. 6 is a plan view of FIG.

FIG. 7 is a plan view illustrating positioning of first and second holding devices.

FIG. 8 is a side view showing a positioning step of the second holding device at the joining position.

FIG. 9 is an elevational view of first and second holding devices.

FIG. 10 is a view on arrow CC of FIG.

FIG. 11 is a view on arrow D-D of FIG. 9.

FIG. 12 is a view on arrow EE in FIG. 9;

FIG. 13 is a view on arrow FF in FIG. 9.

FIG. 14 is an operation explanatory view of the auto splice device according to the present invention.

[Explanation of symbols]

 1 Fabric (Fabric) 2 Cutting Conveyor 3 Cutting Device 5 Splice Mechanism 7 Carry Out Conveyor 12 First Holding Device 14 Second Holding Device 24 Raw Fabric End Face Position Measuring Device 25 Raw Fabric End Face Position Measuring Device

Claims (1)

[Claims] 1. A cutting conveyor having a cutting device for cutting an original fabric at a predetermined angle and a spacing, a splicing mechanism provided downstream of the cutting conveyor, and a splicing mechanism arranged in a cutting direction of the original fabric and joined by the splicing mechanism. In a splice device including a carry-out conveyor for carrying out a fabric, a raw fabric end face position measuring device for detecting a front end and a rear end of the fabric cut by the cutting device, and a fabric that is installed in the splice mechanism and cut A first holding device which holds the rear end of the first holding device and is movable in the direction of the carry-out conveyor;
A second holding device for holding the rear end of the joined fabric and adjusting the holding position, and lifting the rear end of the joined fabric by the second holding device, and cutting the fabric below it. The front end is inserted to join the front and rear fabrics, and the rear end of the newly joined fabric is held by the first holding device and moved to the position of the second holding device. Splice device.