JPH07106555B2 - 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. More specifically, the present invention relates to an improvement relating to a drive system of a cutting blade of a cutting apparatus capable of continuously cutting a relatively flexible processing material such as a ceramic green sheet at high speed.

[0002]

2. Description of the Related Art Conventionally, as a cutting machine, for example,
There is one proposed by the applicant as Japanese Patent Application No. 3-138058.

The conventional cutting and processing apparatus according to the prior proposal of the present applicant has a horizontally installed work table and a processing material for the purpose of downsizing the apparatus size and improving processing performance and processing accuracy. The processing material feeding mechanism for moving the conveying film along the upper surface of the work table and the actuator for moving the cutting blade up and down, horizontal linear movement, and horizontal rotation individually are supported on the working table and supported by the processing material feeding mechanism. The cutting mechanism for cutting the processing material placed on the transport film and the detection mechanism supported by the cutting mechanism or in the vicinity thereof for detecting the position of the processing material under the cutting mechanism are configured. Therefore, the cutting blade of this cutting mechanism is continuously moved up and down at high speed with respect to the processing material continuously placed on the transport film of the processing material feeding mechanism.

In such a conventional cutting machine, high cutting performance is achieved in cutting work performed continuously at high speed.
In order to maintain the processing accuracy, it is necessary to be able to adjust the lifting characteristics such as the cutting pressure (pressing force) of the cutting blade and the lifting time depending on the material of the processing material and the state of the cutting blade. There is.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above technical requirements, and an object of the present invention is to provide a cutting apparatus capable of adjusting the vertical movement characteristics of a cutting blade.

[0006]

In order to solve the above-mentioned problems, the cutting apparatus according to the present invention has a work table installed horizontally and a conveying film on which a processing material is placed along an upper surface of the work table. A moving material feed mechanism to move,
And a cutting mechanism which has an actuator for moving the cutting blade up and down and which is supported on a work table and which cuts the processing material placed on a transport film of the processing material feeding mechanism at high speed and continuously by the lifting movement of the cutting blade. The gist of the cutting apparatus is that the actuator for moving the cutting blade up and down is a servo motor that directly applies a cutting torque to the processing material.

[0007]

According to the above-mentioned means, the servo motor whose torque, position and speed can be controlled is used as the actuator for moving the cutting blade up and down. Since the time and the like can be adjusted by the control of the servo motor, the problem of providing a cutting processing device capable of adjusting the vertical movement characteristics of the cutting blade is solved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cutting apparatus according to the present invention will be described below with reference to the drawings.

In this embodiment, a work material P made of a thin square plate is suitable for cutting in a grid pattern in two orthogonal directions parallel to the periphery.

FIGS. 1 and 2 show the entire structure of the apparatus, in which the respective parts of the processing material feeding mechanism 2 and the cutting mechanism 3 provided on a working table 1 which is the cutting processing surface of the processing material P are clearly shown. Has been done.

The work table 1 is provided with a cutting board 12 which can be moved up and down by an elevating section 13 at the center of a horizontally installed fixed table 11. The cutting board 12 has a planar shape corresponding to the entire surface of the processing material P and receives the cutting stress of the cutting mechanism 3, and the elevating part 13 has a cylindrical cam structure or the like to correspond to the thickness of the processing material P. The cutting board 12 is moved up and down to make the cutting surface of the processing material P constant.

The processing material feeding mechanism 2 comprises a conveying film 23 stretched between a conveying film feeding roll 21 and a conveying film winding roll 22 arranged at both ends of the work table 1. The transport film 23 is wound around the transport film pay-out roll 21, is loaded with the processing material P, moves along the upper surface of the work table 1, and is wound up by the transport film take-up roll 22. A guide frame P ′ is provided on the upper surface of the transport film 23 to prevent the displacement by placing the processing material P at an accurate position.

The cutting mechanism 3 includes a cutting blade 31 composed of a flat blade-shaped blade edge 31c housed in a tool holder 31a and a cutter holder 31b, a servo motor 32 which is an actuator for moving the cutting blade 31 up and down, and a cutting blade 31. Pulse motor 33, which is an actuator for moving horizontally in a straight line
And a pulse motor 34 that is an actuator for horizontally rotating the cutting blade 31. The cutting blade 31 is supported by the base frame 5 on the work table 1 and is placed on the cutting board 12 of the work table 1 with respect to the processing material P. Each actuator is moved up and down, moved horizontally in a straight line, and horizontally rotated to perform cutting.

The cutting blade 31 of the cutting mechanism 3 is attached to the lower end of an elevating and lowering moving portion 35 which is vertically arranged at a substantially central portion of the cutting mechanism 3 and is moved up and down by a servo motor 32 by a cylinder structure or the like so as to be detachable. It can be automatically replaced with a roboting arm or the like. Further, near the cutting blade 31, a cleaning mechanism 6 for sandwiching the blade edge 31c and wiping off the adhered foreign matter is provided.

The elevating / moving portion 35 is a prismatic main body 35a having a mounting portion for the cutting blade 31 at its lower end, and a servo motor which is rotatably incorporated in the central portion of the main body 35a in a vertically rotatable manner to move the cutting blade 31 up and down. A screw rod 35b connected to 32,
The nut 3 fixed to the main body 35a and screwed to the screw rod 35b
5c and a rail receiver 35d provided on the side of the main body 35a in the vertical direction. The up-and-down moving unit 35 is supported by a horizontal linear moving unit 36 that is horizontally moved by the pulse motor 33 so as to be able to move up and down.

The horizontal linear moving section 36 is a horizontal moving table 36.
a, a rail receiver 36b fixed to the lower surface of the movable table 36a and linearly arranged along the horizontal movement direction, and a movable table 36b.
The rail receiver 35 of the ascending / descending movement unit 35 is vertically fixed to the lower surface of
A rail 36c is provided along the line d to stop the elevating / lowering movement part 35 to guide the elevating / lowering movement, and a servo motor 32 which is erected upright at the center of the upper surface of the moving base 36a to vertically move the cutting blade 31. A supporting frame 36d, a nut 36e fixed to a side portion of the upper surface of the moving base 36a, and a cutting blade 3 which is arranged to be screwed with the nut 36e on a side portion of the upper surface of the moving base 36a.
1 is composed of a threaded rod 36f connected to a pulse motor 33 for moving the 1 in a horizontal straight line. The servo motor 32 supported by the support frame 36d is provided with the screw rod 35d of the up-and-down moving unit 35.
Is coaxially connected to. The horizontal linear movement unit 36 is supported by a horizontal rotation movement unit 37 that is horizontally rotated by the pulse motor 34 so as to be horizontally linearly movable.

The horizontal rotary moving part 37 is a rotary plate 37b which is rotatably supported horizontally on the base frame 5 via a bearing 37a so as to surround the elevating moving part 35 and a rotary plate 3b.
The rail receiver 3 of the horizontal linear moving unit 36 fixed to the upper surface of 7b
A support frame for supporting a rail 37c arranged along 6b for guiding the horizontal linear movement of the horizontal linear movement portion 36, and a pulse motor 33 standing on the side of the rotary table 37b for moving the cutting blade 31 in the horizontal linear movement. 37d, a moving gap 37e that is notched in the center of the turntable 37b, and allows a horizontal horizontal movement of the elevating and lowering moving unit 35 accompanying the horizontal linear movement of the horizontal linear moving unit 36, and a lower end of the turntable 37b. The fixed timing pulley 37f, the timing pulley 37f, and the base frame 5
And a timing belt 37g hung between a pulse motor 34 that is supported by and a pulse motor 34 that horizontally rotates the cutting blade 31. The pulse motor 33 supported by the support frame 37d is connected to the screw rod 36f of the horizontal linear movement unit 36 via the belt 33 ′ and the pulley 33 ″.

Further, in this embodiment, the detection mechanism 4 composed of two CCD cameras is installed at the lower end of the elevating / moving portion 35 of the cutting mechanism 3 so as to face each other diagonally downward with the cutting blade 31 interposed therebetween. It is provided. This detection mechanism 4
Is for detecting the position of the processing material P placed on the transport film 23 of the processing material feeding mechanism 2 and located on the cutting board 12 of the work table 1 directly below the cutting mechanism 3, and the actuator (not shown) via a controller (not shown). The cutting operation is automated in cooperation with the servo motor 32 and the pulse motors 33, 34).

According to this embodiment, since the work material feeding mechanism 2, the cutting mechanism 3 and the detecting mechanism 4 are provided above the work table 1 in a compact structure and a small installation area, The device scale becomes small.
Further, since the servo motor 32 and the pulse motors 33, 34 for driving the cutting mechanism 3 are arranged close to each other, electric wirings for these are concentrated and simplified, and the ascending / descending movement unit 35 driven by these is also provided. The drive transmission system for the horizontal linear moving unit 36 and the horizontal rotary moving unit 37 is shortened and simplified. Furthermore, the vertical movement unit 35, the horizontal linear movement unit 36,
Servo motors 32 and
Since the pulse motors 33 and 34 are provided, the drive switching of the respective parts of the ascending / descending movement part 35, the horizontal linear movement part 36, and the horizontal rotation movement part 37 can be performed smoothly and reliably.

In the cutting process in such an embodiment,
First, the processing material P is placed on the conveying film 23 of the processing material feeding mechanism 2 and moved onto the cutting board 12 of the work table 1, the servo motor 32 and the pulse motor 33 are driven to cut in a certain direction at a certain pitch, and then the pulse is applied. Motor 34
Is driven to rotate the cutting blade 31 by 90 degrees to cut at a constant pitch in the direction orthogonal to the previous cutting (FIG. 4, FIG.
(See FIG. 5). At the time of this cutting, the pulse motors 33 and 34 are automatically corrected and driven in response to the positional deviation of the processing material P, etc. by the cooperation of the detection mechanism 4 and the controller, and the processing material P is accurately controlled. It is cut into a grid pattern and the necessary chip pieces are processed precisely.

In such a cutting process, the cutting blade 31 moves up and down continuously at a high speed. However, the servo motor 32 which is an actuator for moving the cutting blade 31 up and down.
Since the torque, position, and speed can be controlled as a feature of the above, it is possible to adjust the vertical movement characteristics of the cutting blade 31. That is, in the case of the processing material P having a relatively flexible material such as a ceramic green sheet, the cutting pressure of the cutting blade 31 can be increased by increasing the torque to perform reliable cutting. Further, when the sharpness of the cutting blade 31 is deteriorated (due to abrasion of the cutting edge 31c, collision of the cutting edge 31c with the guide frame P ′, pinching of foreign matter around the cutting edge 31c, etc.) (requirement of raising and lowering of the cutting blade 31) (Which can be detected as a time delay), the cutting pressure of the cutting blade 31 can be increased by increasing the torque to prevent a delay in the time required for the cutting blade 31 to move up and down and to perform reliable cutting.

As a result, in the cutting process which is continuously performed at high speed, the torque of the servo motor 32, which is an actuator for moving the cutting blade 31 up and down, is controlled to change the material of the processing material P and the state of the cutting blade 31. Since the up-and-down characteristics of the cutting blade 31 can be adjusted correspondingly,
It is possible to prevent a reduction in processing performance due to a delay in the time required for the cutting blade 31 to move up and down and a reduction in processing accuracy due to defective cutting or the like.

The servo motor 32, which is an actuator for moving the cutting blade 31 up and down, is provided separately from the pulse motors 33, 34, which are actuators for moving the cutting blade 31 in a horizontal straight line and in a horizontal rotation. The horizontal linear movement and horizontal rotation movement of the cutting blade 31 are not affected by the torque control of the servo motor 32 as described above.

[0024]

As described above, the cutting apparatus according to the present invention controls the cutting torque and the like of the servo motor for moving the cutting blade up and down, thereby responding to the material of the processing material and the state of the cutting blade. It is possible to adjust the vertical movement characteristics of the cutting blade and to feed back the control signal. Further, due to this effect, in the cutting process in which the cutting blade is moved up and down at high speed and continuously, it is possible to prevent the deterioration of the processing performance due to the delay of the time required for the up and down movement of the cutting blade and the deterioration of the processing accuracy due to defective cutting. .

[Brief description of drawings]

FIG. 1 is a front sectional view showing an embodiment of a cutting apparatus according to the present invention.

FIG. 2 is a vertical sectional view of FIG.

3 is a cross-sectional view of FIG.

FIG. 4 is an enlarged cross-sectional view of a main part showing a cutting operation of FIG.

FIG. 5 is a plan view showing a cut state of a processing material.

[Explanation of symbols]

1 ... Work table 23 ... Conveying film 2 ... Processing material feeding mechanism 31 ... Cutting blade 3 ... Cutting mechanism 32 ... Servo motor (actuator) P ... Processing material

Claims (1)

[Claims] 1. A work table having a horizontally installed work table, a work material feeding mechanism for moving a conveying film on which a work material is placed along the upper surface of the work table, and an actuator for vertically moving a cutting blade. In a cutting processing device comprising a cutting mechanism that is supported by the cutting material and is capable of continuously cutting the processing material placed on the transport film of the processing material feeding mechanism at high speed and continuously by the vertical movement of the cutting blade , the cutting blade is moved up and down.
The moving actuator applies a cutting torque directly to the work material.
A cutting processing device, which is a servomotor to be provided .