JPS63120094A - Punching device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a punching device used for punching various plate materials such as iron plates and plastic plates, as well as punching holes for mounting circuit elements on printed circuit boards. It is something.

(Prior Art) In the prior art, for example, in the drilling device shown in Utility Model Application Publication No. 57-193398, the drilling tool is actuated so as not to hinder the use of a scope installed above the center of the drilling. The actuating arm is attached to the tip of the arm, and the actuating arm is rotatable and vertically movable relative to the bearing tube of the elevating shaft, thereby connecting the actuating arm and the elevating shaft. This allows the drilling tool to swing and move up and down.

(Problems to be Solved by the Invention) In the above conventional technology, the force for pushing down the punch is transmitted from the lifting shaft to the punching tool via the operating arm, so the long operating arm is easily deformed, and the operating arm has a high Rigidity is required. Furthermore, since the punching tool is temporarily removed from the position facing the die by swinging, the relative position of the punch and the die is likely to shift when returning, which may cause damage to the punch.

SUMMARY OF THE INVENTION An object of the present invention is to provide a punching device that eliminates damage to the punch due to misalignment of the relative positions of the punch and die, and eliminates the need to increase the rigidity of the upper plate to which the punch is attached.

(Means for Solving the Problems) The present invention is characterized in that a lower plate is movably supported in the XY directions and driven by an XY table mechanism, and a die is fixed to the lower plate. Further, the upper plate is arranged to be movable up and down relative to the lower plate and to move integrally with the lower plate in the X and Y directions, and a punch is fixed to the upper plate opposite to the die.

Furthermore, an upper plate driving means for moving the upper plate up and down is supported by the fixed member.

(Function) The upper plate moves together with the lower plate in the X and Y directions,
For this reason, the relative position of punch and die, once accurately aligned, remains unchanged throughout the operation.

The upper plate driving means is supported by a fixed member separately from the upper plate and the lower plate, so that the upper plate does not deform during punching work.

[Example] An embodiment of the present invention will be described with reference to the drawings.

As shown in the first diagram, a lower plate 4 supported movably in the XY directions by an XY table mechanism 3 is located below a fixed work table 2 that is positioned with a predetermined gap on the base 1. . As shown in FIG. 7, the lower plate 4 is fitted on both sides into guide grooves 60a, 60a of a fixed support plate 60, 60 fixed to the base 1, and is received so as to be movable in the X and Y directions. . The die mounting portion 4a at the front end of the lower plate 4 is thick and has a through hole 4b formed therein. A die holding vibro connected to the rear end of the die 5 fits into this hole, and the die 5 is attached to the lower plate 4 by a die holder 7 connected to the tip of the die holding vibro. The position of the die holder 7 can be adjusted in the front, rear, left and right directions using four position adjusting screws 8 attached to the lower plate 4. The rear end of the die holding vibro is connected to a flexible tube 9, and can suck out punch waste with air.

The XY table mechanism 3 will be explained. X table 10
A nut 103 that engages with a lead screw 102 at an angle of the X axis is supported on a bracket 101 that hangs down from the bracket 101 . Both ends of the lead screw 1゜2 are supported by bearings 104, and the lower end is connected to the stepping motor 1 of the X-axis angle.
05 by a coupling 106.

A bearing 12 is interposed between the X table 10 and the Y table 11. The means for driving the Y table 11 is the same as in the case of the X table 1o described above,
1 is a bracket that hangs down from the Y table 11, and 112 is a lead screw at the Y axis angle.

113 is Natsu. Y table 11 empty bin 13.
13 protrudes upward and fits into a bearing 14 provided on the lower plate 4. The lower plate 4 is movable in the XY directions by the XY table mechanism 3 via the bin 13. The end surface of the die 5 is on the same level as the upper surface of the work table 2, and the work table 2 has a die 5. A through hole 2a is formed so as not to impede movement of the die holder 7° position adjustment screw 8.

The upper plate 15 will be explained. A vertically extending frame 16 is fixed to the lower plate 4, and a reinforcing plate 16
It is reinforced by a. This frame has bearings in part 1.
6b and 16c are provided, and a guide shaft 17 is supported so as to be vertically movable.

The upper plate 15 is mounted on the guide shaft 17 at a bearing portion 15a.

15b (second illustration) and are connected by tightening screws 18a and 18b. A punch 1 is attached to the front end of the upper plate 15.
9 is attached with a nut 20.

The punch 19 is fixed opposite to the die 5.

A shaft 21 is connected to the rear end of the upper plate 15 by a nut 22, and a stripper 24 is connected to the lower end of the shaft by a pin 23 so as to be able to swing slightly up and down. A hole 24a through which the tip of the punch 19 passes through the front end of the stripper 24
and a protrusion 24b that presses down the workpiece.

Between the upper plate 15 and the stripper 24, a further downward pressing force transmitting portion 25 is provided in the intermediate portion. That is, a shaft 27 passing through a bearing 26 provided on the upper plate 15
has a circumferential groove 27a on its lower end and a spherical surface 2 on its lower end surface.
7b is formed. The upper end of the shaft 27 is connected to the upper plate 1
It protrudes through a cap 28 fixed to the cap 5, and a nut 29 is screwed thereto to regulate its height position.

A spring 30 is housed within the cap 28 for applying a downward spring force to the shaft 27. The spherical surface 27b is in contact with the upper surface of the stripper 24, and the holder 31 is engaged with the groove 27a from both sides, and this holder is fixed to both sides of the stripper 24.

Upper plate driving means 3 for vertically moving the upper plate 15
2 will be explained next. A shaft 34 is supported as a fixed member on a side plate 33'a of a frame 33 fixed to the base 1, and a press lever 35 is supported on this shaft 34 so as to be swingable. The pressing lever 35 transmits the force for moving the upper plate 15 up and down from its front end. That is, the rear end of the suppression lever 35 is swingably connected to a connecting shaft 37 of a hydraulic cylinder 36 fixed to the base 1 via a pin 38. Therefore, as the hydraulic cylinder 36 advances and retreats, the press lever 35 swings about the shaft 34 and drives the upper plate 15 via its front end. Numeral 39 is a screw for determining the degree of extension of the hydraulic cylinder 36, and is fixed to the upper plate 33b of the frame 33.

As shown in the second figure, the front end of the pressing lever 35 is branched into two parts to form pressing parts 35a, 35a. Therefore, a configuration in which the nut 20 of the punch 19 is pressed by the pressing portion 35a will be explained. As shown in the 2nd to 5th figures, the pressing part 35
A guide long groove 35b extending in the front-rear direction (X direction) is provided at the front end of a.

35b is formed. The punch pressing member 40 has a gate shape spanning between the pressing parts 35a, 35a, and has shafts 40a, 40a protruding from both sides thereof. A cylindrical body 41.41 is fitted to this shaft across the guide long groove 35b, and a knob 42 is provided with a gap at the end protruding from the guide long groove so as to be able to follow the movement of the upper plate 15 in the Y direction.
．． 42 is installation. Further, cylindrical bodies 43, 43 are fixed to both sides of the punch suppressing member 40, and a shaft 44 and a spring 45 for inwardly pressing the shaft are housed within this cylindrical body. A knob 46, 46 is fixed to the protruding end of the shaft 44. A connecting member 47 is provided on the front end surface of the upper plate 15.
are fixed by screws 48. Recesses 47a are provided on both sides of the connecting member 47, into which the tip of the shaft 44 can fit.

The tip of the shaft 44 is pressed by the spring 45 to form the recess 47.
The connecting member 47 and the punch pressing member 40 are connected while they are fitted into the hole a, but when the knob 46 is pulled, the shaft 4
4 is moved back to disengage from the recess 47a, the connection between the two is severed. In this way, the cylindrical body 43. Axis 44. Spring 45. The recessed portion 47a constitutes a connecting means between the punch suppressing member 40 and the connecting member 47.

The position holding means 49 for the workpiece will be explained. 1st
, 2, the clamper lever 50.degree. 50 is swingably supported by a shaft 51 supported by the frame 33 at its rear end. A connecting lever 52 is fixed to the rear end of this clamper lever. The connecting lever 52 passes through the through hole 35c of the pressing lever 35 and extends upward.
Its upper end is connected to the shaft of an air cylinder 53 fixed to the upper plate 33b of the frame 33 via rods 54 and 55. A clamper 56 is attached to the front end of the clamper lever 50. The means for attaching the clamper 56 to the clamper lever 50 will be explained with reference to FIGS. 3 and 6. The front end of the clamper lever 50 is provided with long grooves 50a, 50a extending in the front-rear direction, and guide grooves 50b, 50b are provided on opposing inner surfaces thereof.

The clamper 56 has a shaft 57.5 installed across the long groove 50a.
7 protrudes, and the knobs 58 and 58 are screwed onto the shaft 57 and fixed to the clamper lever 50. Also clamper 56
Pins 59 and 59 protrude from the pins 59 and 59, which are capable of sliding within the guide groove 50b but cannot be displaced in the vertical direction. A U-shaped notch 56a is formed in the clamper 56 so as not to prevent the stripper 24 from descending.

Note that 61 is a television camera, and 62 is a lens.

A workpiece A is conveyed on the upper surface of the work table 2 by a conveyance means (not shown).

Next, the operation will be explained. Punch 1 on top plate 15
9 and the die 5 of the lower plate 4 are adjusted in advance to accurate opposing positions by position adjusting screws 8.... For example, when drilling a hole for mounting a circuit element on a printed circuit board A, which is a workpiece, the printed circuit board A is transported over the work table 2 in the Y direction by a transport means (not shown), and the hole is not drilled under the lens 62. When the position is reached, it stops. Then, the air cylinder 53 of the position holding means 49 operates, and the connecting lever 52. The clamper lever 50 is swung to lower the clamper 56. The clamper 56 presses the printed circuit board A with its lower surface and holds it at this position. Then, the XY table mechanism 3 operates, the X table moves backward, and the lower plate 4
．． The upper plate 15° and the stripper 24 are moved back together. The connecting member 47 retreats together with the upper plate 15, and the punch pressing member 40 also retreats together with the connecting member. Therefore, there is no obstacle between the printed circuit board A and the lens 62. Therefore, a pattern for hole identification, which is pre-formed on the printed circuit board A, is imaged by a TV camera 61 and stored as an image.The coordinates of the center position of the pattern are detected using this image signal, and the signal is It is supplied to the table mechanism 3 to move the lower plate 4 in the XY directions. As described above, since the amount of movement of the lower plate 4 in the Y direction is within the range of the conveyance error of the printed circuit board A, it is supported so that any amount of movement is possible. This movement brings the center of the die 5 fixed to the lower plate 4 to a position where it coincides with the center of the hole to be drilled. As the lower plate 4 moves, the upper plate 15. Stripper 24
moves, so the opposing positions of the punch 19 and the die 5 do not change.

Further, as the upper plate 15 moves, the punch pressing member 40 moves in the XY direction via the connecting member 47. At this time, since the pressing lever 35 is in the fixed position, only the punch pressing member 40 follows and moves within the range of the guide long groove 35a and the gap between the pressing lever 35 and the knob 42 attached to the shaft 40a. For this purpose, a punch pressing member 40 is always located on the nut 20 of the punch 19. Then, the hydraulic cylinder 36 of the upper plate driving means 32 is driven, the front end of the pressing lever 35 is lowered, and the nut 20 is pressed by the punch pressing member 40. This suppression causes the upper plate 15 to descend together with the guide shaft 17. Also axis 21.2
7, the stripper 24 also descends. When the protrusion 24b of the stripper comes into contact with the printed circuit board A, the stripper 24 cannot be lowered any further, so only the upper plate 15 is lowered by compressing the spring 30.

At this time, holes are made in the printed circuit board A by the bunch 19. Depending on the work, use die 5° or die holder 7 to make the hole.
Since the pressing force applied to the lower plate 4 via the support plate 60 is received by the support plate 60, it is not transmitted to the XY table mechanism 3. The hydraulic cylinder 36 moves back and the press lever 35
The front end of the punch suppressing member 40. Connecting member 47
, the upper plate 15 rises. While the upper plate 15 begins to rise and the spring 30 is able to expand within the cap 28, the stripper 24 does not rise and holds down the printed circuit board A, so the punch 19 escapes from the hole in the printed circuit board. Thereafter, the stripper 24 also rises and returns to its original position. Note that the lifting force of the upper plate 15 is, for example,
It is also possible to interpose a spring for lifting at 7 and configure it so that the force is applied by this spring.

If the punch 19 is damaged, pull the knob 46° 46 to retract the shaft 44, 44 and insert the tip into the recess 47.
a to separate the punch suppressing member 40 and the connecting member 47. By holding the knobs 42, 42 of the punch suppressing member and pulling them forward, the punch suppressing member 40 is pulled out and can be removed from the suppressing lever 35. This releases the upper part of the nut 20, making it possible to replace the punch 19.

(Effects of the Invention) The present invention has the above configuration, and since the upper plate that fixes the punch moves integrally with the lower plate that fixes the die in the X and Y directions, the relative position between the punch and the die is fixed. It will not shift and will not cause damage to the punch. In addition, the upper plate to which the punch is fixed is driven by the upper plate driving means supported by the fixed member, and the upper plate does not bend during punching, so the upper plate does not require large rigidity. The configuration is simple.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a sectional view, Fig. 2 is a partially cutaway plan view, Fig. 3 is a sectional view taken along the line ■-■ in Fig. 2, and Fig. 4 is a punch press. FIG. 5 is a partially cutaway front view showing the connecting means between the member and the connecting member; FIG. 5 is a sectional view showing the main part of the punch suppressing member; FIG. 6 is a partially sectional plan view showing the main part of the clamper; FIG. The figure is a sectional view showing the support structure of the lower plate. 3...XY table mechanism, 4...Lower plate, 5...Dice, 15...
Upper plate, 19... Punch, 32... Upper plate driving means, 33.34... Fixing member. that's all

Claims (1)

[Claims] A lower plate supported movably in XY directions and driven by an XY table mechanism; a die fixed to the lower plate; and a die movable up and down relative to the lower plate. and an upper plate arranged to move integrally with the lower plate in the X and Y directions; a punch fixed to the upper plate so as to face the die; A punching device comprising an upper plate driving means for moving the upper plate up and down.