JPH1133994A - Conveyor feed detecting device for automatic cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately detect the moved quantity of a conveyor, and to conduct the accurate positioning of a conveyor belt by providing a detecting wheel, which detects a feed of a conveyor belt, an encoder, which transmits the feed to a control device, and a rotor, which presses the conveyor belt from above. SOLUTION: A rotor 4 of a conveyor feed detecting device 1 presses a conveyor belt 6 from above, and a belt receiver 5 is positioned under the conveyor belt 6. The conveyor belt 6 is pinched by the rotor 4 and the belt receiver 5, and vibration and vertical movement of the conveyor belt 6 is eliminated. A detecting wheel 3 is rotated by the quantity of a command value of the conveyor feed, and distance becomes equal to the feed of the conveyor belt 6. At the time of cutting, a suction device is controlled by a suction pressure variable device, and operated in the high suction pressure condition. A sheet member to be cut can be fixed by the high suction pressure on a top surface of the conveyor belt 6 for cutting through a suction hole of a suction table and a suction hole of the conveyor belt 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic cutting device having a conveyor device, which automatically cuts a cut sheet-like member spread on the conveyor belt, and transports the cut member. By pushing the conveyor belt that conveys sheet-like members from above with the rotating body provided on the side of the conveyor feed amount detection device, vibration and vertical movement of the conveyor belt are eliminated, and the accuracy of the conveyor feed amount is greatly improved. The present invention relates to an improved conveyor feed amount detection device for an automatic cutting machine.

[0002]

2. Description of the Related Art Conventionally, a feed amount of a conveyor used in an automatic cutting machine is, as shown in FIG.
The conveyor feed amount detecting device 1 is used.
That is, the detection of the feed amount of the conveyor is as follows. When a command value of a certain transport distance is output from the control device, the conveyor rotates, and the detection wheel 3 of the conveyor feed amount detecting device attached to the cutting machine frame portion beside the conveyor belt. The encoder 2 reads this amount of rotation, and stops the conveyor when the detection wheel 3 rotates by the feed amount of the command value, thereby moving the conveyor with a certain command value.

[0003]

The conventional conveyor feed amount detecting device shown in FIG. 4 has the following disadvantages. That is, when the conveyor belt moves, the conveyor belt vibrates and moves up and down, and the detection wheel of the conveyor feed amount detecting device also vibrates and moves up and down. Since the feed amount is detected, the conveyor stops before the intended feed amount in the horizontal direction. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to solve the above-mentioned drawbacks by providing a rotating body that suppresses vibration and vertical movement during movement of a conveyor belt. An object of the present invention is to provide a conveyor feed amount detecting device for an automatic cutting machine.

[0004]

Means for achieving the object are a conveyor belt having a large number of suction holes over its entire length including an extension area, a cutting area, and a pick-up area, and a conveyor belt having the same. Drive unit for driving the cutter head, an X-axis drive unit and a Y-axis drive unit for moving the cutter head in all directions within the cutting area, and the cut to be cut expanded on a conveyor belt facing the cutter head. In a conveyor-type automatic cutting machine including a sheet-shaped member, a suction device that suction-fixes the cut sheet-shaped member on the conveyor belt, and a control device unit that controls these, the conveyor belt is disposed next to the conveyor belt. It consists of a detection wheel that detects the feed amount, an encoder that transmits the feed amount to the control device, and a rotating body that presses the conveyor belt from above. That.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 3, a conveyor belt 6 having a large number of suction holes over its entire length is used.
By operating the suction device 10 in a state where the cut sheet-like member 12 is expanded in the cutting area on the upper surface of the sheet, the sheet member 12 is suction-fixed and cut. When the cutting is completed, the conveyor belt 6 starts moving. The rotating body 4 of the conveyor feed amount detection device 1 presses the conveyor belt 6 from above,
Since the belt receiver 5 is located below the conveyor belt 6, the conveyor belt 6 is sandwiched between the rotating body 4 and the belt receiver 5, and vibration and vertical movement of the conveyor belt 6 can be eliminated. The distance by which the detection wheel 3 has been rotated by the command value of the conveyor feed amount is equal to the feed amount of the conveyor belt 6.

An embodiment of the present invention will be described below with reference to the drawings. 1, 2 and 3 are a side view, a front view and a perspective view showing the structure of this embodiment. Reference numeral 4 denotes a rotating body that presses the conveyor belt 6 from above, 5 denotes a belt receiver for setting the height of the conveyor belt 6 at the position of the pickup area c to be the same as the cutting area b, and 7 drives the conveyor belt 6 by frictional action. 8 is a servomotor for driving the drive drum in accordance with a command from the control device, 9 is a suction table which is located in the cutting area a and has a large number of suction holes formed on the upper surface, and 10 is connected to the side surface of the suction table 9 The suction device 11 is operated by a command from the control device.
A suction pressure variable device for changing the suction pressure of the sheet, a sheet-like member 12 to be cut, and a frame portion 13 of the cutting machine. Note that portions denoted by the same reference numerals as those in FIG. 4 have the same structure and the same function. a is the elongation area, b is the cutting area,
c is a pickup area.

In this embodiment, (a) the sheet-like member 12 to be cut is expanded in the extension area a, (b) the sheet is conveyed to the cutting area b by moving the conveyor, and cutting is started. It is transported to the pickup area c by movement and picks up parts cut manually. It is configured to perform the above-mentioned operations (a) to (c) repeatedly. At the time of cutting, the suction device 10 is controlled by the suction pressure variable device 11 and is operated in a high suction pressure state, so that the cut sheet-like member 12 is cut through the suction holes of the suction table 9 and the suction holes of the conveyor belt 6.
Is fixed to the upper surface of the conveyor belt 6 at a high suction pressure and cut. In general, an inverter is used for the adsorption pressure variable device 11. From the extension area a to the cutting area b,
When the conveyor belt 6 is moved from the cutting area b to the pickup area c, the conveyor belt 6 is moved by a set amount of movement in accordance with a command from the control device by pressing a conveyor movement switch. By the way, since both the conveyor feed amount detecting device and the belt receiver 5 are attached to the cutting machine frame portion 13, the distance between the detecting wheel 3 and the rotating body 4 and the upper surface of the belt receiver 5 can be set with high accuracy. Since the rotating body 4 presses the conveyor belt 6 when the conveyor belt 6 is moved, the vibration and the vertical movement can be made extremely small, and the conveyor feed amount can be accurately detected.

【The invention's effect】

As described above, according to the present invention, when driving a conveyor belt, the amount of movement can be accurately detected by eliminating vibration and vertical movement during movement of the conveyor belt. Accurate positioning of the belt is now possible.

[Brief description of the drawings]

FIG. 1 is a side view of a conveyor feed amount detecting apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of a conveyor feed amount detecting device according to an embodiment of the present invention.

FIG. 3 is a perspective view of an automatic cutting machine showing one embodiment of the present invention.

FIG. 4 is a perspective view of a conventional conveyor feed amount detecting device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Conveyor feed amount detecting device 2 Encoder 輪 3 Detecting wheel 4 Rotating member 5 Belt receiver 6 Conveyor belt 7 Drive drum 8 Servo motor 9 Suction table 10 Suction device 11 Suction pressure variable device 12 Sheet material to be cut 13 Cutting machine frame

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI D06H 7/02 D06H 7/02

Claims (1)

[Claims] 1. A conveyor belt having a large number of suction holes over its entire length including an extension area, a cutting area, and a pickup area, a conveyor driving unit for driving the conveyor belt, and a cutter in the cutting area. A conveyor-type automatic apparatus including an X-axis drive unit and a Y-axis drive unit for moving the head in all directions, a suction device for suction-fixing to a conveyor belt facing the cutter head, and a control unit for controlling these. A conveyor for an automatic cutting machine, wherein the cutting machine is provided with a detection wheel for detecting a feed amount of the conveyor belt, an encoder for transmitting the feed amount to a control device, and a rotating body for pressing the conveyor belt from above, which is next to the conveyor belt. Feed amount detection device.