JPH023647B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a press device for punching plate-shaped printed matter such as a watch dial, name plate, printed circuit board, etc. using a press.

FIG. 1 shows a watch dial as an example of a plate-shaped printed matter. This dial plate 1 is printed in numbers on a rectangular sheet-like material 2 as shown in FIG. 2a, for example. (4 in this example) are printed side by side,
Each dial plate 1 with reference holes 3 drilled at fixed positions on the upper and lower sides is used as a workpiece 2 for multiple presses and is placed in a press machine as shown in Figs. 2b to e.
As shown in FIG. 2, the dial plate 1 was punched out in order using a press using the reference hole 3 as a guide.

In the conventional press device that performs such punching, a locate pin that fits into the reference hole 3 is provided on the lower die of the press, and an operator manually inserts the reference hole 3 of the workpiece 2 into the lower die. After fitting to the locating pin, pressing was performed one piece at a time using two-handed push buttons, resulting in low work efficiency. In particular, the final piece 1 of the workpiece 2' shown in FIG. 2d is set directly under the press die and pressed, which is extremely dangerous.

The present invention was made in order to eliminate the above-mentioned problems, and includes two locating pins with conical tips that match the reference hole of the workpiece and are attached to the outer frame of the upper die of the press, which is made up of an outer frame and an inner die. , a fitting hole for the locating pin is provided in the outer frame of a lower mold of the press consisting of an outer frame and an inner mold, and the punched remaining part of the workpiece during pressing descends from the upper surface of the inner mold together with the outer frame of the lower mold, When the upper mold reaches its lifting limit, the outer frame of the lower mold is raised to the same level as the inner mold by a member that works with the upper mold, thereby automating the loading and unloading of workpieces into the press equipment. The purpose of this system is to improve the efficiency and safety of this type of press operation by making it possible to automatically feed the workpiece to the press device.

The drawings will be explained below. 4 in the figure is the base,
5 is a press machine, 5a is its slide (elevating member), 5b is a bolster plate, 6 is a lower mold,
6a is the outer frame, 6b is the inner mold, 7 is the upper mold, and 7a
is its outer frame, and 7b is its inner mold.

Also, 8 is two rails installed on the base 4,
A frame 10 of an automatic feeding device for a workpiece 2 is movably mounted on the rail 8 via wheels 9. Reference numeral 11 (see FIG. 4) is a connecting plate that connects the press machine 5 and the pedestal 10 at a position close to each other. Reference numeral 12 denotes a workpiece support stand protruding from one side of the pedestal 10 so as to be able to rise and fall freely, and a large number of workpieces 2 are stacked on this support stand 12. 13 is the workpiece positioning plate.

Further, 14 is a lifter bracket protruding from the lower part of the pedestal 10, 15 is a guide bar bearing provided on this bracket 14, 16 is a guide bar bearing provided on the pedestal 10, and 17 is provided perpendicularly between these bearings 15 and 16. The guide bars 18 are slidably fitted to the guide bars 17 and are attached to the workpiece support base 12.
19 is a bearing that moves up and down together with the bearing 18.
A ball screw nut is integrally provided in between, 20 is a ball screw shaft screwed into this nut 19, 21 is a geared brake motor for driving this ball screw shaft 20, and 22 (see Fig. 4) is a ball. This is a bearing for the screw shaft 20.

That is, by driving the motor 21, the workpiece support table 12 can be raised and lowered.

In addition, 23 holds the workpiece 2 on the workpiece support stand 12.
A work table supports the transferred work piece by piece on the pedestal 10, 24 is a frame constructed on the pedestal 10 over the work support 12 and the work table 23, and 25 is a holder 26 placed below this frame 24. 27 is a slide block slidably provided on these guide bars 25; 28 is an air cylinder provided below the frame 24 for driving the slide block 27; 29 is an air cylinder provided below the frame 24; Four vacuum parts 30 are arranged below the slide block 27 for adsorbing the workpiece, and 30 are these vacuum parts 2.
This is an air cylinder for raising and lowering 9.

That is, the workpieces 2 stacked on the workpiece support table 12 are sucked one by one by the vacuum pad 29, lifted by the air cylinder 30, and transferred onto the worktable 23 by the operation of the air cylinder 28.

31 and 32 are work guide edges protruding from two sides of the work table 23, and 33 is a work guide edge 31 for guiding the work 2 placed on the work table 23.
A workpiece positioning plate is provided on the worktable 23 in order to press the workpiece against the workpiece, and 34 is an air cylinder for operating the workpiece positioning plate.

In addition, 35 (see Figure 4) is the work table 23.
The notch groove 23 is made to protrude upward from the notch groove 23a.
A workpiece positioning roller is provided movably within a, and this roller 35 is pivotally supported above the center of a horizontal member 36, as shown in detail in FIG.
Both ends of the horizontal member 36 are provided with guide rollers 3, respectively.
7 and is guided by a guide groove 38. The guide groove 38 is provided on the upper part of a plate 39 projecting from the pedestal 10, and the press side has a downward slope as shown in FIG. 6a.
Reference numeral 40 denotes an air cylinder for driving the roller 35 via the horizontal member 36, the base of which is pivotally supported by a bracket 41 protruding from the pedestal 10.

In other words, 1 placed on the work table 23
The workpiece 2 is pressed against the guide edge 31 via the plate 33 by operating the air cylinder 34, and by further contracting the air cylinder 40, the roller 37 is moved along the guide groove 38 in the direction of arrow A in FIG. 6a. The workpiece 2 can be pressed against the guide edge 32 by pressing the workpiece 2 against the guide edge 32. By doing this, the work 2 can be moved to the work table 23.
It can be set correctly in the upper position. Note that once the workpiece 2 is set in the normal position, the air cylinders 34 and 40 are returned to their original states, but at this time the roller 35 is retracted below the worktable 23 at the position shown by the solid line in FIG. 6a. The workpiece 2 does not get in the way when moving toward the press machine 5 side.

Reference numeral 42 denotes two guide bars provided parallel to each other along the longitudinal direction of the pedestal 10.
A ball screw shaft 45 is provided in parallel with the guide bar 42 in the middle of the book guide bar 42 via bearings 43 and 44 . 46 is a DC servo motor for driving the ball screw shaft 45, 47 is an electromagnetic brake, 48 is a coupling, and 49 is an encoder provided at the other end of the ball screw shaft 45.

50 is a saddle that moves along the guide bar 42 as the ball screw shaft 45 rotates; 51 is two guide bars that pass through the saddle 50;
These two guide bars 51 are parallel to each other and horizontally arranged perpendicular to the guide bar 42, and are connected to the saddle 50 by an air cylinder 53 disposed between the outer connecting member 52 and the saddle 50. It is designed to be able to slide freely. and guide bar 51
A grip base 54 is fixed to the inner end of the grip base 54, and a grip bracket 55 is protruded from the press machine 5 side of the grip base 54, and the base of a grip arm 56 is pivotally supported on the grip bracket 55 by a pin 57. An air cylinder 60 for raising and lowering the grip is provided between a lever 58 integrated with the grip arm 56 and a bracket 59 protruding from the grip base 54, and the distal end of the grip arm 56 is raised and lowered by the expansion and contraction of this air cylinder 60. A workpiece grip vacuum pad 61 is provided at the tip of the grip arm 56.

Therefore, as mentioned above, work table 2
The work 2 set in a fixed position on the press 3 is attracted by the vacuum part 61, and is transferred to the press machine 5 side via the saddle 50 by the rotation of the ball screw shaft 45, and is placed on the lower die 6 of the press. The workpiece 2 can be set at a predetermined position. Note that 62 (see Figures 3 and 4) is a work guide provided between the work table 23 and the lower mold 6 of the press, and 63 (see Figure 3) is a workpiece guide provided between the work table 23 and the lower die 6 of the press. This is the nozzle of the air blowing device that blows away when it falls from the mold 7.

7 to 11 show details of the main parts of the present invention, in which the outer frame 7a of the upper die 7 of the press, which is composed of an outer frame 7a and an inner die 7b, matches the reference hole 3 of the workpiece 2. However, the tip 70a is formed into a conical shape 2
A book locating pin 70 is provided to protrude downward, and a fitting hole 71 for the locating pin 70 is provided in the outer frame 6a of the lower mold 6 consisting of the outer frame 6a and the inner mold 6b.

Also, the slide (elevating member) 5 of the press machine 5
A bar guide holder 72 is fixed to both sides of the bar guide holder 72 via bolts 73, and a hollow cylindrical bar guide 74 is vertically inserted into the bar guide holder 72.
By tightening the clamp bolts 75 provided between the flange portions 72b on both sides of the bar guide 7
4 can be fixed in a predetermined position. Then, one side of the outer periphery of the bar guide 74 is cut out to form a flat surface 7.
4a, and the bar guide 7 is in contact with this plane 74a.
A detent plate 75 for stopping the rotation of the bar guide holder 72 is fixed to the upper surface of the bar guide holder 72 with a bolt 76. Note that 74b is a bush provided at the upper and lower portions of the inner hole of the bar guide 74.

Reference numeral 77 denotes an outer frame lifting bar for lifting the outer frame 6a of the lower mold 6 inserted into the inner hole of the bar guide 74 so as to be able to rise and fall freely.The base of a lever 78 is fixed to the lower end of this bar 77, and The tip end 78a of the outer frame 6a is engaged with the recessed notch 6c of the outer frame 6a. 7
9 is a washer and 80 is a nut. A coil spring 81 is fitted to the outer frame lifting bar 77 between the lower surface of the bar guide 74 and the lever 78. Also, one side of the upper part of the bar 77 is cut out to form a flat surface 77a.
A substantially U-shaped rotation stopper plate 82 that contacts this flat surface 77a to stop the rotation of the bar 77 is fixed to the upper surface of the bar guide 74 via a stopper screw 83. At the upper end of the outer frame lifting bar 77,
The stopper plate 84 and spring washer 85 are fitted, and the nut 86 is screwed together.

Since the device of the present invention is configured as described above, by adjusting the fixing position of the bar guide 74, the slide 5a of the press machine 5 can be adjusted as shown in FIG. 7a.
is at the upper limit position, the lever 75 pulls up the outer frame 6a of the lower mold 6, so that the upper surface of the outer frame 6a touches the inner mold 6b.
The seventh
As shown in FIG. b, when the slide 5a is at the lower limit position, the outer frame 6a is lowered and can be set so as to be lowered by an amount S from the upper surface of the inner mold 6b.

Therefore, according to the apparatus of the present invention, the punched remaining part 2' (see FIG. 2) of the workpiece 2 during pressing is removed together with the outer frame 6a of the lower die 6, as shown in FIG. 7b. It descends by S from the upper surface of the mold 6b. In this case, a spring 8 that pushes up the outer frame 6a
If the force 7 (see Figure 3) is made weak, due to the frictional resistance of the fit between the punched remaining part 2' and the inner die 6b,
As shown in FIG. 7c, even if the upper mold 7 rises, the outer frame 6
Since the part a does not rise and remains fitted to the inner mold 6b, the workpiece 2 is removed by the vacuum part 61 at this time.
If you grip it, the position of work 2 will not go out of order.

As shown in FIG. 7a, when the slide 5a reaches its upper limit, the outer frame 6a is pulled up via the outer frame lifting bar 77 and the lever 78, and the inner mold
Since the workpiece 2 is removed from the position b, the workpiece 2 can be accurately fed as the vacuum pad 61 moves.

Note that the dial 1, which is a product punched from the workpiece 2, is raised together with the upper die 7 while being retracted into the outer frame 7a together with the inner die 7b of the upper die 7, as shown in FIGS. 7b and 7c. However, when the slide 5a reaches its upper limit, the inner mold 7b slightly protrudes downward from the outer frame 7a as shown in FIG. It is blown away by the air jetted from the

In addition, in the apparatus of the present invention, two locating pins 70, each having a conical tip 70a that matches the reference hole 3 of the workpiece 2, are provided on the outer frame 7a of the upper die 7, and protrude downward. Since the fitting hole 71 for the locating pin 70 is provided in the outer frame 6a of the locating pin 70, even if there is some error in the automatic feeding accuracy of the workpiece 2, the position is corrected by the conical tip 70a of the locating pin 70. Accurate pressing is performed.

In addition, the conventional locate pin was provided protruding from the upper surface of the lower die, which obstructed the transfer of the workpiece and complicated the workpiece setting operation.In the present invention, however, the locate pin is provided on the upper die, making it easier to transfer the workpiece. It does not get in the way, and the workpiece can be set easily.

Since the apparatus of the present invention is as described above, it is possible to automate the feeding of the workpiece to the press apparatus and the setting of the workpiece in a fixed position. Therefore, the present invention has the excellent effect of significantly improving the efficiency and safety of this type of press operation.

[Brief explanation of drawings]

Fig. 1 is a front view of a watch face plate showing an example of a plate-shaped printed matter, Figs. FIG. 4 is a plan view thereof, FIG. 5 is a side view thereof, and FIG. 6a is an elevational view of a workpiece positioning device; Fig. 7 b is a plan view thereof, Fig. 7 a is a partially longitudinal front view showing the main parts of the device of the present invention, and Fig. 7 b and c.
is an explanatory diagram of its operation, FIG. 8 is a cross-sectional view taken along line A-A in FIG. 7a, FIG. 9 is a cross-sectional view taken along line B-B, and FIG. 10 is a view taken along C-C. Figure 11 is D
- It is a cross-sectional view taken along the D line. 1... A clock dial showing an example of a plate-like printed matter,
2... Workpiece, 3... Reference hole, 4...
... Base, 5 ... Press machine, 5a ... Slide (elevating member), 5b ... Bolster plate,
6...lower mold, 6a...outer frame, 6b...inner mold, 7...
...Top mold, 7a...Outer frame, 7b...Inner mold, 70...
Locate pin, 70a...conical tip, 71...
Fitting hole, 72... Bar guide holder, 74...
Bar guide, 77... Outer frame lifting bar, 78...
...Lever, 81...Coil spring.

Claims (1)

[Claims] 1 Two locating pins with conical tips that match the reference hole of the workpiece are installed on the outer frame of the upper mold of the press, which consists of an outer frame and an inner mold, and the lower mold of the press, which consists of the outer frame and inner mold, A fitting hole for the locating pin is provided in the outer frame of the die, and during pressing, the punched remaining part of the workpiece descends from the upper surface of the inner die together with the outer frame of the lower die, and when the upper die reaches its lifting limit, it interlocks with the upper die. A press device for plate-shaped printed matter, characterized in that the outer frame of the lower mold is raised to the same level as the inner mold by a member.