JP3683803B2 - Sheet material grooving machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a groove processing machine for a thin plate material, for example, a plate material for forming a dividing groove (V-shaped groove) on a printed circuit board on which printed wiring is provided, and a control device therefor.
[0002]
[Prior art]
As a conventional technique, there is one described in Japanese Patent Publication No. 7-12575. In other words, a table that supports the plate material on the front side of the machine base and a lateral movement device that moves the left and right direction by holding the front end of the plate material with a clamp, the column can be moved in the front-rear direction on the rear side of the machine base. This column is provided with a pair of upper and lower rotary machining heads that pivot about the vertical axis, and when forming a V-shaped groove in the left-right direction on the plate material, the plate material is placed on the table with reference to its end face Then, the front end portion of the plate material is held by a clamp, the rotary processing head is turned so that its axial center is directed in the front-rear direction, and the rotary processing head is rotated and the plate material is placed on the table via the lateral movement device. The plate is moved in the left-right direction to form a left-right direction groove in the plate material. Further, when the longitudinal groove is formed in the plate material, the rotary processing head is turned through the column in a state where the rotary processing head is turned so that the axial center thereof is directed in the left-right direction and the rotary processing head is rotated. Has been moved in the front-rear direction to form grooves in the front-rear direction in the plate material.
[0003]
[Problems to be solved by the invention]
In the above-described conventional one, the plate material placed on the table is clamped with the end surface as a reference, so the end surface of the plate material needs to be processed with high accuracy, and always requires a pre-process called end surface processing. The man-hour increased. Also, when the board is a printed circuit board, the edge of the board is not aligned with the printed wiring part on the inner periphery due to the difference in thermal expansion, so the grooves are formed with high precision corresponding to the printed wiring part. It was difficult to do. In addition, since the clamp for holding the plate material was provided on the table side, the next plate material could not be supplied to the table until the groove processing of the plate material was completed, and it was difficult to increase the processing efficiency. . It is an object of the present invention to obtain a novel plate material grooving machine which solves the above problems.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is configured as follows. That is, the invention according to claim 1 is a processing portion that moves in the left-right direction to form a groove in the left-right direction in the plate material, an insertion portion that feeds the plate material from the direction orthogonal to the moving direction of the processing portion toward the processing position, A receiving clamp portion that receives and holds the forward end of the plate material sent to the processing position by the insertion portion, and supports the receiving clamp portion so as to be pivotable about the upper and lower axes, and moves this backward. A feed part, a reference point recognition part for recognizing a reference point of the plate material sent by the insertion part, and a signal of the reference point recognition part are inputted to adjust the rotation of the receiving clamp part around the axis. A rotation device is provided , and the reference point recognition unit is provided in the processing unit and is movable in the left-right direction together with the processing unit .
According to a second aspect of the present invention, the processing unit is rotated about an axial center in the front-rear direction perpendicular to the moving direction of the lateral moving body, at the forward end of the lateral moving body that moves in the left-right direction. The reference point recognizing unit is configured to be provided on an advance side of the laterally moving body and on a forward line of the cutter.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 is a schematic perspective view of a grooving machine according to the present invention, FIG. 2 is a schematic side view of the grooving machine according to the present invention, and FIG. 3 is a perspective view of a processing portion according to the present invention. 1 and 2, A is a plate material groove processing machine, and 1 is the machine base, and an insertion portion 2 for sending a plate material (printed circuit board) W toward a processing position is attached to the front side of the machine base 1. . That is, the insertion table 3 on which the plate material W is placed is attached to the front side of the machine base 1 so as to be able to move back and forth, and the Y axis cylinder 4 that forms the front and rear drive device in the front and rear direction within a predetermined range (left and right in FIG. Move to.
[0006]
A locking guide 5 is attached to the upper surface of the insertion table 3. The locking guide 5 is elongated in the left-right direction so as to substantially correspond to the left-right width of the insertion table 3, and is moved and adjusted in the front-rear direction and fixed to the insertion table 3 by a stopper 6 such as a machine screw. As shown in FIG. 2, the locking guide 5 abuts against the anti-advance end (left end) of the plate material W placed on the insertion table 3, and the advance end (right end) of the plate material W moves forward of the insertion table 3. It is for projecting a predetermined amount to the right from the end (right end).
[0007]
A receiving clamp portion 8 and a feed portion 20 for moving the receiving clamp portion 8 back and forth are attached to the rear side of the machine base 1. As shown in FIG. 1, the feed unit 20 has a crossbar 21 extending in the left-right direction attached to the upper part of the rear part of the machine base 1 so as to be slidable back and forth, and the crossbar 21 attached to the side part of the machine base 1. The Y-axis screw 22 is connected to the Y-axis screw 22, and the Y-axis screw 22 is rotated forward and backward by a Y-axis motor 23 formed of a servo motor to move the cross bar 21 in the front-rear direction.
[0008]
The receiving clamp 8 is provided with a holding bar 9 extending in the left-right direction on the front side of the cross bar 21, and an intermediate part of the receiving clamp 8 can be rotated about the vertical axis about the cross bar 21 via a fulcrum pin 10. And a plurality of clamps 12 are attached to the holding bar 9 at predetermined intervals on the left and right. As shown in FIG. 2, the clamp 12 forms a regulation step portion on the left end upper surface of the lower claw 12a fixed to the holding bar 9 to which the forward end (right end) of the plate material W is locked. An upper claw 12b is connected to the upper part via a pin 12c so as to be rotatable up and down, and the upper claw 12b is turned up and down by a cylinder to clamp and release the forward end of the plate material W.
[0009]
A pivoting device 14 is provided for pivoting the receiving clamp portion 8 about the fulcrum pin 10. That is, as shown in FIG. 1, a rotation motor 15 made of a servo motor is attached to the right end portion of the cross bar 21, and an adjustment screw 16 attached to the output shaft of the rotation motor 15 is attached to the right end portion of the holding bar 9. Screwed into a nut (not shown). The nut is rotatable about the vertical axis so that the holding bar 9 can be smoothly rotated about the fulcrum pin 10.
[0010]
A processing section 25 that moves in the left-right direction is provided between the insertion table 3 and the clamp 12. That is, as shown in FIGS. 1 and 3, the support arm 26 is fixed to the side of the machine base 1 so as to protrude sideways (leftward), and the lateral moving body 30 is moved to the support arm 26 in the left-right direction. The laterally movable body 30 is screw-coupled to an X-axis screw 27 extending in the left-right direction attached to the support arm 26, and the X-axis screw 27 is rotated forward and backward by an X-axis motor 28 comprising a servo motor. The horizontal moving body 30 is moved in the left-right direction. In the upper and lower intermediate portions of the lateral moving body 30, elongated relief holes 30a are formed on the left and right to prevent collision with the plate material W.
[0011]
A pair of processing heads 31, 31 are attached to the right end portion of the laterally moving body 30 so as to face each other with the escape hole 30a interposed therebetween. Each processing head 31 has a disk-shaped cutter 33 (33a, 33b) having a chevron blade attached to the rotating shaft of a head motor 32 that rotates about a longitudinal axis, and each processing head 31 is a head. Movement and adjustment in the contact / separation direction is performed by a Z-axis motor 34 that is a servo motor that forms a lifting device, and the depth of the groove H formed in the plate material W is adjusted by controlling the rotation of the Z-axis motor 34. Yes. In FIG. 3, 35a and 35b are safety covers, which are fixed to the right end of the laterally movable body 30 and cover the upper half circumference of the upper cutter 33a and the lower half circumference of the lower cutter 33b. In addition, when forming the V-shaped groove | channel H (FIG. 3) only in the single side | surface of the board | plate material W, the said process head 31 shall be only one of the upper and lower sides.
[0012]
As shown in FIG. 3, the plate material (printed circuit board) W has positioning holes P (P1, P2) for positioning which are used as a reference when electronic components are mounted on the outer peripheral portion at a predetermined pitch. A reference point recognition unit 40 for recognizing the reference hole P is provided at the right end of 30. The reference point recognition unit 40 is a solid-state video device, and a CCD camera 41 is attached to the forward end of the upper safety cover 35a and a light emitting tube 42 is attached to the forward end of the lower safety cover 35b so as to face each other. 3, the CCD camera 41 and the light emitting tube 42 are moved to the right in FIG. 3, and the plate material W on the insertion table 3 is passed between them to recognize the position of the reference hole P (P1, P2). It is supposed to be. The CCD camera 41 and the light emitting tube 42 are arranged on the forward line of the cutter 33.
[0013]
In FIG. 2, reference numeral 44 denotes a lift device attached to the front side of the insertion table 3, which holds the accumulated unprocessed plate material W at a predetermined height position. The unprocessed plate material W deposited on the lift device 44 is sequentially lifted from the upper side by the suction pad 46 of the input unit 45 and placed (supplied) at a predetermined position on the insertion table 3. 47 is a plate-like processing clamp provided on the front side of the processing head 31, and when the plate material W is grooved, the front side of the groove processing portion of the plate material W is pressed from above to fix on the machine base 1 side. It is fixed to the table 7. Reference numeral 48 denotes a carry-out unit comprising a belt conveyor provided below the receiving clamp unit 8, which receives a plate material (processed product) W that has been detached and dropped from the clamp 12 and transports it to the rear. It discharges | emits to the deposition lift 49 provided in the rear part.
[0014]
FIG. 4 shows a block diagram of a control device for controlling the grooving machine A. In FIG. 4, reference numeral 50 denotes a processing mode setting unit, which inputs and sets the pitch of the grooves H formed on the plate material W, the depth of the grooves H, the driving order of each driving unit provided in the groove processing machine A, and the like. Reference numeral 51 denotes a processing command unit, which receives signals from the processing mode setting unit and inputs each driving unit, that is, the insertion unit 45, the insertion unit 2, the receiving clamp unit 8, the feeding unit 20, the unloading unit 48, the processing unit 25, A predetermined drive command is issued to the reference point recognition unit 40 and the like. When receiving the drive command from the machining command unit 51, the reference point recognition unit 40 recognizes the position of the reference hole P (P1, P2) of the plate material W and outputs this data to the clamp correction unit 52. The clamp correction unit 52 inputs the data of the reference point recognition unit 40 to drive and control the rotation device 14 and receives the clamp unit 8 so that the position of the reference hole P (P1, P2) is set. Correct the posture.
[0015]
FIG. 5 shows a flowchart of the control device. In FIG. 5, S1 to S27 are steps. In FIG. 5, when starting at S <b> 1, the loading unit 45 (FIG. 2) is operated at S <b> 2, and the plate material W on the lift device 44 is placed on the insertion table 3. Next, in S3, the Y-axis cylinder 4 (FIG. 1) is extended and the insertion table 3 moves forward. After the front end of the plate material W on the insertion table 3 is brought into contact with the regulation step of the lower claw 12a of the clamp 12, In S4, the clamp 12 is actuated to clamp the front end of the plate material W.
[0016]
Next, in S5 and S6, the Y-axis motor 23 of the feeding section 20 is rotated by a specified amount, and the plate material W is advanced to the first reference position in the front and rear (Y) direction via the clamp 12, and then moved laterally in S7 and S8. The X-axis motor 28 of the device 25 is rotated by a specified amount to advance the CCD camera 41 to the first reference position in the left / right (X) direction. Next, in step S9, the reference point recognition unit 40 is operated, and the CCD camera 41 recognizes (measures) the first reference hole P1 formed in the plate material W, and stores the shift amount of the first reference hole P1 position.
[0017]
Next, in S10 and S11, the Y-axis motor 23 of the feeding unit 20 is rotated by a specified amount in the same direction, and the plate material W is advanced to the second reference position in the front and rear (Y) direction via the clamp 12, and then S12 and S13. Thus, the X-axis motor 28 of the lateral movement device 25 is rotated by a specified amount to advance the CCD camera 41 to the second reference position in the left-right (X) direction. Next, in S14, the second reference hole P2 is recognized (measured) by the CCD camera 41, and the shift amount of the position of the second reference hole P2 is stored.
[0018]
Next, in step S15, the angle correction amount (posture correction amount) of the holding bar 9 of the receiving clamp unit 8 from the displacement amount of the first and second reference holes P1 and P2, and the rotation motor 15 corresponding to the angle correction amount. A drive amount (rotation amount) is calculated, and the rotation motor 15 is rotated by a specified amount in S16, whereby the plate material W on the insertion table 3 is positioned at an appropriate position. Next, in S17, each Z-axis motor 34 of the machining head 31 is operated by a specified amount to move each cutter 33 in the approaching direction, and the depth of the groove H formed in the plate material W is set.
[0019]
Next, in step S18, the X-axis motor 28 is driven to return to move the cutter 33 to the processing initial position, and in step S19, the Y-axis motor 23 is driven by a predetermined amount to move the plate material W to a predetermined groove processing position. Next, the processing clamp 47 is operated in S20 to fix the plate material W to the fixing table 7 (FIG. 2) on the machine base 1 side.
[0020]
Next, after starting the head motor 32 and rotating the cutters 33 in S21, the X-axis motor 28 is processed and driven in S22, and the cutters 33 are moved 1 in the left-right direction in FIG. The groove H is formed at a predetermined position of the plate material W by reciprocating.
[0021]
Next, the processing clamp 47 is released (released) in S23, and whether or not the grooving is completed is confirmed in S24. If NO, the process jumps to S19. If YES, the clamp 12 is released in S25 and the plate material W is carried out. After dropping to the part 48 and operating the carry-out part 48 in S26 to discharge the plate material W toward the deposition lift 49 at the rear of the machine base 1, the grooving of the plate material W is finished in S27.
[0022]
【The invention's effect】
As is apparent from the above description, the present invention provides a receiving clamp portion for receiving and holding the forward end of the plate material sent to the processing position, and the receiving clamp portion is rotated around the upper and lower axes about the feeding portion. Since a rotation device that supports the movement and inputs a signal of a reference point recognition unit for recognizing a reference point provided on the plate material and adjusts the rotation of the receiving clamp portion is provided, the accuracy of the end surface of the plate material is affected. Therefore, the plate material can be positioned with high accuracy, and the groove processing on the plate material is performed with high accuracy.
In addition, since the plate material is grooved while being pulled backward by the receiving clamp device provided on the rear side of the plate material insertion portion, even a thin plate material, such as a printed circuit board, does not bend when moved backward, and is thin. Grooving on the plate material is performed with high accuracy. Further, even during the groove processing, the next plate material can be supplied to the insertion portion, and the processing efficiency is increased.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a grooving machine according to the present invention.
FIG. 2 is a schematic side view of a grooving machine according to the present invention.
FIG. 3 is a perspective view of a processing portion according to the present invention.
FIG. 4 is a block diagram of a control device for a grooving machine according to the present invention.
FIG. 5 is a flowchart of a control device according to the present invention.
[Explanation of symbols]
1 Machine base 2 Insertion section 3 Insertion table 4 Y-axis cylinder (front-rear drive device)
5 Locking guide 6 Stopper 8 Receiving clamp part 9 Holding bar 10 Supporting point pin 12 Clamp 12a Lower claw 12b Upper claw 12c Pin 14 Rotating device 15 Rotating motor 16 Adjustment screw 20 Feeding part 21 Cross bar 22 Y-axis screw 23 Y Axis motor 25 Processing portion 26 Support arm 27 X-axis screw 28 X-axis motor 30 Lateral moving body 30a Escape hole 31 Processing head 32 Head motor 33 (33a, 33b) Cutter 34 Z-axis motor (head lifting device)
35 (35a, 35b) Safety cover 40 Reference point recognition unit 41 CCD camera 42 Light emitting tube 44 Lifting device 45 Loading unit 46 Suction pad 47 Processing clamp 48 Unloading unit 49 Loading lift 50 Processing mode setting unit 51 Processing command unit 52 Clamp correction Part W Plate material (printed circuit board)
H Groove P (P1, P2) Reference hole

Claims (2)

A processing portion (25) that moves in the left-right direction to form a groove in the left-right direction in the plate material (W), and an insertion that feeds the plate material (W) from the direction orthogonal to the moving direction of the processing portion (25) toward the processing position. A receiving part (2), a receiving clamp part (8) for receiving and holding the forward end of the plate (W) sent to the processing position by the insertion part (2), and the receiving clamp part (8) Recognizing the feed point (20) that supports the shaft center (10) so as to be pivotable and moves it backward, and the reference point (P) of the plate (W) sent by the insertion part (2) A reference point recognizing unit (40) that receives the signal from the reference point recognizing unit (40), and a rotation device (14) that rotates the receiving clamp unit (8) about the axis (10). ) are provided on a substrate, the reference point recognizing unit (40), said processing unit provided in the processing unit (25) Grooving machine of the plate material, characterized in that the movable in the lateral direction together with 25). The processing portion (25) is a circle that rotates around the axial center in the front-rear direction perpendicular to the moving direction of the lateral moving body (30) at the forward end of the lateral moving body (30) that moves in the left-right direction. It has a plate-like cutter (33), and the reference point recognition unit (40) is provided on the advance side of the lateral moving body (30) and on the advance line of the cutter (33). 2. The plate material grooving machine according to claim 1, wherein:

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