JP2564441Y2 - Cutting machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting machine for controlling the movement of a cutting blade based on information input by a bar code.

[0002]

2. Description of the Related Art Conventionally, in order to cut a rubber plate, particularly a rubber plate with a backing paper, a cutting blade is driven by a crank or a solenoid. When the solenoid type cutting machine is described with reference to FIG. 3, a rubber plate c mounted on a rotary cutting table a via a sheet b is cut by a cutting blade e driven by a solenoid d. After cutting, the cutting blade e is returned to the original position by the return spring f.

[0003]

However, in such a conventional solenoid type cutting machine, since the cutting blade e collides with the rotary cutting table a with a maximum cutting force for each cutting, the cutting blade e Caused damage such as chipping and distortion. Therefore, the soft sheet b was stuck on the rotary cutting table a to reduce the cutting force, but this problem could not be completely solved. In addition, since cutting conditions such as the number of cuts, cut dimensions, cutting blade height, and solenoid drive voltage are input using a numeric keypad and a digital switch, it is troublesome, and it is easy to cause cut defects and damage to the cutting blade due to input errors. . Further, the rubber plate c
Could not be cut half. Therefore, the purpose of the present invention is to control the cutting conditions such as the movement of the cutting blade, the number of cuts, the cutting dimensions, the height of the cutting blade, the position of the bottom dead center of the cutting blade, etc. The present invention provides a cutting machine capable of preventing defective cutting and performing half cutting of a workpiece.

[0004]

The present invention has been achieved as a result of various studies for solving the above-mentioned problems. This cutting machine has a screw rod which is rotated by a pair of left and right servomotors on a gantry. A cutting blade is supported on both screw rods so that it can move up and down,
It is characterized in that the rotation of the servomotor is controlled by the information input to the barcode.

Hereinafter, the cutting machine of the present invention will be described with reference to the illustrated drawings. 1 (a) and 1 (b) show an embodiment of the cutting machine of the present invention in a front view and a side view, respectively. In the figure, 1 is a stand, 2 is a base plate, 3
Is a U-shaped support frame, 4 and 4 are a pair of right and left screw rods planted on the base plate 2, the upper part is on the support frame 3, the base is on the base plate 2,
Each is rotatably supported. Reference numerals 5 and 6 denote a speed reducer and a driving servomotor directly connected to the top of each screw 4. Reference numeral 7 denotes a movable frame which is screwed to the left and right screw rods 2 and moves up and down, and both left and right end portions are slidably supported by guides 8 fixed to the support frame 3. Reference numeral 9 denotes a cutting blade mounted on the lower part. Reference numeral 10 denotes a rotary cut table rotatably provided on the base plate 2, reference numeral 11 denotes a feed motor thereof, and reference numeral 12 denotes a workpiece such as a rubber plate placed on the rotary cut table 10.

FIG. 2 is an explanatory diagram showing an example of a control system applied to the cutting machine. In the figure, reference numeral 21 denotes a barcode reader. Here, a barcode in which each cutting condition such as a cut dimension, the number of cuts, a bottom dead center position, etc. is input,
Read this information. 22 is a computer for inputting this information, 23 is its storage device, 24 is a sequencer master station for instructing each cutting machine on the cutting conditions input to the computer 22, and 25 is a sequencer for each cutting machine to be used. In this control system, 1) Read the product instruction number with the barcode reader 21 and
When input to the computer 22, the cut condition of this instruction number is retrieved from the storage device 23. When the number of the cutting machine to be used is input to the computer 22 using the numeric keys, the cutting conditions are displayed on the display. 2) When the displayed cutting conditions are converted into data that can be understood by the sequencer master station 24 by the computer 22, the cutting conditions are sent to the sequencer 25 of the cutting machine to be used, and the cutting machine is controlled. Information on the operation of the cutting machine, such as the end of a cut, an abnormality, etc., and operation information are sent to the computer 22 via the sequencer master station 24, displayed on a display, and simultaneously input to the storage device 23 as data.

[0007]

In this cutting machine, first, a work material 12 such as a rubber plate is placed on the rotary cut table 10 and a start button (not shown) is pressed. (By a mechanism not shown). The bottom dead center of the cutting blade 9 is set arbitrarily in advance in accordance with the thickness of the workpiece 12, and a rubber plate with a backing sheet or the like is used.
When it is set to 12, only the workpiece 12 is cut to prevent the cutting blade 9 from hitting the cutting table 10. When the high-speed rotation servomotor 6 is driven, the movable frame 7 descends as the screw 2 moves. At that time, the movable frame 7 smoothly descends along the guides 8 provided on both sides, so that the cutting blade 9 is prevented from blurring and the oblique cut is prevented. The servo motor 6 drives to the preset bottom dead center position in accordance with the input bar code information to cut the workpiece 12.

Although the servo motor 6 is rotating at high speed, a certain amount of force (torque) is required to cut the workpiece 12 such as a rubber plate. 2, the rotation speed is reduced, and a torque that can cut the workpiece 12 is obtained. The selection of the speed reducer 5 or the setting of the speed reduction conditions is determined by the material and thickness of the workpiece 12 to be cut. For example, in this cutting machine, a silicone having a rubber hardness of 20 to 70 ° H and a thickness of 7.0 mm or less is used. It is designed to be able to adapt to cut rubber plates. By using the servo motor in the cutting machine of the present invention, the bottom dead center position of the cutting blade can be controlled in units of 0.1 mm, and it is possible to perform not only half cutting but also cutting of the workpiece 12 in the X direction and the Y direction. Since the bottom dead center position can be set arbitrarily, for example, when cutting the rubber plate stuck on the backing paper, cut only the rubber plate in the X direction and leave the backing paper, perform a half cut,
In the Y direction, a method of cutting everything from the rubber plate to the mount can be used.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the cutting device of the present invention shown in FIG.
HA-SC23 (manufactured by Mitsubishi Electric Corporation, product name, output 200 W, torque 6.5 kgf · cm, rotation speed 3,000 rpm) as servo motor 6
Using this as the main power, the high-speed rotational movement is reduced to 600 rpm of the practical use rotational speed through a speed reducer (BM3.1 / 5, manufactured by IMT) 5, and the rubber plate as the workpiece 12 is 32kgf, the torque that can be cut, was obtained. The bottom dead center of the cutting blade 9 could be managed and controlled with a positioning accuracy of 1/100 mm. The cutting blade 9 mounted on the movable frame 7 moves upward and downward as the pair of left and right screw rods (general commercially available products) 4 and 4 rotate, but these always maintain a horizontal position, and furthermore, left and right displacement and twisting. In order to suppress the occurrence of the problem, the left and right ends of the movable frame 7 are supported by guides 8 fixed to the support frame 3 so that the movable frame 7 can be moved smoothly and accurately. As a result, 140
mm, and movement accuracy of 1 / 100mm. The rotary cutting table 10 that holds the rubber plate to be cut has X,
Rotation by a rotary cylinder (manufactured by SMC, not shown) was enabled to rotate 90 ° so that the Y direction could be cut at a right angle. When cutting the rubber plate, use the rotary cutting table 10
Is a feed motor HA-SC43 (Mitsubishi Electric Corporation, product name, output 4
(00W servo motor) 11 moves by the set dimension input for the X direction and the number of constant cuts, and after rotating 90 °, moves by the set dimension input for the Y direction and the number of constant cuts. After the end of the cutting, the operation of returning to the origin position was performed. When the control system of the present invention is used, the cutting blade position is calculated by the storage device 23 so as to obtain the most efficient number of cuts for rubber plates of various sizes (size, thickness). . In addition, the position of the bottom dead center of the cutting blade was also controlled, so that it was possible to control the cutting of only the rubber plate or the mounting plate and the rubber plate together when the rubber plate had a mount. A total of 256 cutting machines could be controlled by this control system.

[0010]

According to the cutting machine of the present invention, troublesome input adjustment is not required, the burden on the operator is reduced, and cutting defects due to input errors can be eliminated. In addition, since the bottom dead center can be set, the cutting blade does not bump into the cutting table and half cutting can be performed. In addition, since the cutting blade can be stopped in front of the cutting table, blade scratches due to blade spills and oblique cuts are eliminated,
The cut shape has improved. As a result, it was possible to omit the trial cut before mass production and to confirm the dimensions and shape of the cut product, thereby significantly improving the working efficiency, quality, and yield.

[Brief description of the drawings]

FIG. 1 relates to an embodiment of the cutting machine of the present invention,
(A) and (b) are a front view and a side view, respectively.

FIG. 2 is an explanatory diagram of the control system of the cutting machine of the present invention.

FIG. 3 is a front view of a conventional cutting machine.

[Explanation of symbols]

1 ‥ stand, 2 ‥ base plate, 3 ‥ support frame, 4 ‥ screw rod, 5 ‥ reduction gear, 6 ‥ servo motor, 7
‥ Movable frame 8 ‥ Guide, 9 ‥ Cutting blade, 10 ‥ Rotary cutting table, 11 ‥ Driving motor, 12 ‥
Work material, 21 barcode reader, 22 computer, 23 storage device, 24 PLC master station,
Sequencer for 25 mm cut machine.

Claims (1)

(57) [Scope of request for utility model registration] 1. A screw rod which is rotated by a pair of left and right servomotors is implanted on a base, and a cutting blade is supported on both screw rods so as to be vertically movable, and the rotation of the servomotor is controlled by information input to a bar code. A cutting machine characterized by the following.