JPH04167938A - Apparatus for working and unloading work - Google Patents

Abstract

PURPOSE:To efficiently work a work and to easily unload the work by detaching a seesaw die arranging a die part at the upper part from the work with spring force after working the work under condition of raising the seesaw die through an upper die holder and a cam worker. CONSTITUTION:On a lower die holder 1, the seesaw die 7 turning with the spring force through a lift spring pin 11, is set, and the work W is supplied on the die part 8 at the upper part thereof and a die part 3 of fixed die 2. Successively, the upper holder 28 is descended and the cam worker 15 is advanced against the spring force of a return spring 22 through the driver surface 36 thereof and the seesaw die 7 is raised through a working plate 18. Under this condition, the work W is held with the above die parts 3, 8 and a pad 29. Further, the upper die holder 28 is descended, and the cam worker 15 and a shifting punch device 24 are advanced and the work is pierced through with punches 17, 25 to execute punching. After that, the upper die holder 28 is ascended, and the cam worker 15 and the shifting punch device 24 are retreated with the spring force, and by tilting the seesaw die 7 to the fixed die 2 side, this is detached from the worked work W.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a workpiece processing and removal device that facilitates the removal of a workpiece after plastic working such as pressing or punching.

<Prior Art> Automobile frames and the like are formed by various plastic working methods such as press working, punching work, and punching work. Therefore, it is necessary that the processing and removal of the workpiece in each processing step be carried out easily and quickly. Furthermore, it is desirable from the standpoint of improving work efficiency if the processing is done in a similar manner to the original metal.

FIGS. 6 and 7 show an example of a conventional general apparatus that performs punching as an example of plastic working. For example, in automobile frames, punching is performed to form tapping holes.

Reference numeral 101 designates a fixed lower die holder, on which wear plates 102 are attached parallel to each other at intervals, and cam side blocks 103 are installed on the outside of each wear plate 102.
, cam upper plates 104 are attached one on top of the other.

A movable die 105 is mounted on the wear plate 102, and the movable die 105 is movable in the front and back direction (in the direction of the arrow ab in FIG. 6) using the cam side block 103 as a guide.

A spring bracket 106 is attached near the center of the lower part of the movable die 105, and this spring bracket 10
A return spring 107 is interposed between the movable die 105 and the lower die holder 101 to apply a forward spring force (arrow a) to the movable die 105. 108 is a set bolt for holding this return spring 107. A stopper 109 is provided on the lower mold holder 101 to stop the movable die 105 that is moved by the spring force of the return spring 107. The movable die 105 has a raised part 110 at the front, a lower mold part 111 is formed on the upper part of the raised part 110, and a receiver 112 for receiving a punch is formed near the upper end of the raised part 110. On the other hand, there is also a protrusion 113 at the rear of the movable die 105, and a cam surface 114 is formed vertically in the front of the protrusion 113.

Wear plates 115 are mounted parallel to each other at intervals on the movable die 105, and a cam side block 116 and a cam upper plate 117 are mounted on the outside of each wear plate 115 in a stacked manner. wear plate 1
A cam worker 118 is mounted on the cam worker 15, and the cam worker 118 is movable in the front-back direction using a cam side block 116 as a guide. Cam worker 1
A return spring 119 is interposed between the lower part of the die 18 and the movable die 105.
The cam worker 118 is directed in the direction of retreat (arrow b).
The spring force of is applied. A stopper 120 is provided immediately in front of the rear raised portion 113 of the movable die 105 for stopping the retreated cam worker 118 at a fixed position. In addition, in the figure, 121 is a set bolt for setting the return spring 119.

A punch retainer 122 is attached to the front part of the cam worker 118, and a punch 123 for punching is held in the punch retainer 122. this punch 1
The central axis of 23 coincides with the center of the receiver 112 of the lower mold part 111. The rear part of the cam worker 118 is a slope, and a wear plate 124 is attached to the slope.

On the other hand, a pad 126 for pressing a workpiece W to be supplied onto the lower mold part 111 against the lower mold part 111 is held via a rubber material 127 on the upper mold holder 125 which is moved upwardly and vertically. A wear plate 128 is provided on the side surface of the pad 126 and is capable of sliding on a vertical guide surface 129 formed on the upper mold holder 125.

Moreover, 13o is a strip bolt.

The upper mold holder 125 has a cam surface 11 at the rear of the movable die 105.
A cam stroke plate 131 is provided which can engage with the wear plate 1 of the cam worker 118vk section.
The driver surface 132 is sloped at the same angle as 24.
is formed.

The punching process 9 of tapping holes in the workpiece W using this conventional apparatus is performed as follows.

When the workpiece W is supplied to the lower die part 111 of the movable die 105, the upper die holder 125 descends, and first, the cams loaf plate 131 is attached to the cam surface 114 at the rear of the movable die 105.
By engaging with the movable die 105, the movable die 105 is moved backward by a stroke S against the spring force of the return spring 107.

Next, the workpiece W is pressed onto the lower mold part 111 by the hat 126.

Furthermore, by lowering the upper mold holder 125, the driver surface 132 and the wear plate 1 of the cam worker 118
24, the cam worker 118 is advanced by a stroke S2 against the spring force of the return spring 119,
A punch 123 punches through the workpiece W.

When the machining is completed, the upper die holder 125 rises, and the cam worker 118 is pushed back by the spring force of the return spring 119. Furthermore, when the cam stroke plate 131 of the upper mold holder 125 separates from the cam surface 114 of the movable die 105, the movable die 105 is pushed back to the position where it hits the stopper 109 by the spring force of the return spring 107. In other words, the lower mold part 111 is separated from the processed workpiece W. Therefore, the workpiece W can be taken out upward.

<Problems to be Solved by the Invention> However, in the conventional device described above, both the movable die 105 and the cam worker 118 are moved by the vertical movement of the upper mold holder 125. There was a problem that the system became complicated and large, and it took up a large amount of installation space. Also, moving die 1
Since it is necessary to move 05, it is difficult to provide a receiving mold for other processing, and there is also a problem that it is impossible to perform combined processing.

Means for Solving the Problems> In order to solve the above problems, in the present invention, a seesaw die is swingably supported by applying a spring force in the direction of rotation to the fixed die side that receives a part of the workpiece, A die part for receiving a part of the workpiece is formed in the upper part of the seesaw die, and a receiving part for the processing tool is formed in this die part.A cam worker is provided so as to be movable forward and backward with respect to the seesaw die, and a cam worker is provided in the front part of the cam worker. In addition to being equipped with processing tools to process the workpiece,
The cam worker moves forward with respect to the seesaw die by lowering the upper die holder and engaging with the upper die holder, and when the cam worker moves forward, it engages with the seesaw die and raises the seesaw die against the spring force. The actuating part was provided in the cam worker to constitute a workpiece processing and removal device.

Function> In the above device, the seesaw die is raised by moving the cam worker forward as the upper mold holder descends, and the workpiece is received by the fixed die and the seesaw die. As the cam worker moves forward, the workpiece is processed by its processing tool.

After processing, the cam worker retreats as the upper mold holder rises, and the seesaw die swings toward the fixed die side due to the spring biasing force. In other words, the die section at the top of the seesaw die is separated from the workpiece, and the workpiece can be taken out upward.

Embodiment Next, an embodiment of the workpiece processing and removal device according to the present invention will be described based on the drawings.

FIG. 1 shows a cross-section of one embodiment, and FIG. 2 shows a cross-section taken along the line ■--■ in FIG. 5 showing an operating state. In addition, in this embodiment, punching can be performed in addition to punching into the workpiece W.

Reference numeral 1 denotes a fixed lower mold holder, and a fixed die 2 is provided on the upper part of the lower mold holder. The upper part of the fixed die 2 is a die part 3 for receiving the workpiece W.

A bushing 4 for receiving a punch during punching is embedded in this die portion 3.

A pair of bearing stands 5 are provided on the lower die holder 1 in the vicinity of the fixed die 2, and a seesaw diameter is pivotally supported on a rotating shaft 6 held by these bearing stands 5. The seesaw drill has a die portion 8 at the top, and a punch receiving hole 9 is formed in the die portion 8 as a receiving portion for a processing tool. The lower surface 10 of the seesaw diameter is in contact with the upper surface of the lower mold holder 1.

A lift spring bin 11 is embedded in the lower die holder 1 at a position opposite to a position away from the rotating shaft 6 on the lower surface 10 of the see-saw diameter. An upward spring force is applied to the bottle 11, and the seesaw diameter is rotated toward the fixed die 2 by the bottle 11, so that the upper die part 8 is in contact with the fixed die 2, as shown in FIG. Become. This state is the original state before machining operation begins.

A pair of wear plates 12 are provided parallel to each other with an interval on the lower mold holder 1 on the rear side of the seesaw diameter (in the front-back direction in the ab force direction in FIG. 1). Cam side block 13 on the outside
, cam upper plates 14 are attached one on top of the other.

Legs 16 of a cam worker 15 are mounted on the wear plate 14, and the cam worker 15 can move forward and backward using the cam side blocks 13 and the like as guides.

A punch retainer 16 is provided at the front of the cam worker 15, and a punch air is held in the punch retainer 16 as a processing tool. An actuating plate 18 is provided at the front lower side of the cam worker 15 as an actuating portion. The front part of the actuating plate 18 is a slope 20 that can engage with the engagement slope 19 at the rear of the seesaw diameter.

The rear part of the cam worker 15 is a slope, and a wear plate 21 is provided on this slope. camworker 15
A return spring 22 is interposed between the cam worker 15 and the lower die holder 1 at the lower part of the cam worker 15.
When no external force is applied, the cam worker 15 is retracted by the spring force of the return spring 22 to a position where it hits a stopper 23 provided on the lower mold holder 1. 39 is a spring set bolt for setting the return spring 22.

On the other hand, since the device also performs punching,
On the opposite side, a movable punch device 2 is movable relative to the fixed die 2 by a support and guide mechanism similar to the cam worker 15.
4 is provided. A punch 25 is provided at the front of the movable punch device 24 as a processing tool. The center axis of this punch 25 coincides with the center axis of the bush 4 of the fixed die 2. The rear part of the moving punch device 24 is a slope, and a wear plate 26 is provided on the slope. Note that a return spring 27 is interposed between the movable punch device 24 and the lower die holder 1 at the lower part of the movable punch device 24, and when no external force is applied to the movable punch device 24, the movable punch device 24 and the return The spring force of the spring 27 causes it to retreat to a predetermined position and wait.

These, fixed die 2, seesaw diameter, cam worker 15
An upper mold holder 28 is located above the movable punch device 24 so as to be movable up and down, and this upper mold holder 28 has a pad 29 for pressing the workpiece W on the fixed die 2 and the seesaw die 15. is supported via a rubber member 30. The lower part of the pad 29 serves as a die portion 30 that matches the shape of the workpiece W in order to press the workpiece W, and a notch portion 31, 32 for passing the break-through punch 17 and the punching punch 25 is formed in a part of the die portion 30. ing.

A wear plate 33 is provided on the side surface of the pad 29, and this wear plate 33 can slide on a vertical guide surface 34 formed on the upper mold holder 28. In addition, 35 in the figure is provided in the upper mold holder 28,
This is a stripper bolt that passes through the pad 29.

The upper mold holder 28 is formed with a cam worker driver surface 36 that can come into contact with the wear plate 21 at the rear of the cam worker 15, and a punch driver surface 37 that can come into contact with the wear plate 26 at the rear of the movable punch device 24.

Next, the operation of the workpiece processing and take-out device having the above configuration will be explained.

First, the workpiece W is supplied onto the fixed die 2 and the upper die parts 3 and 8 of the see-saw diameter that are inclined toward the fixed die 2 side.

Next, the upper mold holder 28 is lowered. As the upper die holder 28 is lowered, its driver surface 36 hits the wear plate 21 at the rear of the cam worker 15, as shown in FIG. 3, and the cam worker 15 is moved forward against the spring force of the return spring 22. Similarly, the driver surface 37 hits the wear plate 26 to move the movable punch device 24 forward toward the fixed die 2 against the spring force of the return spring 27. When the cam worker 15 moves forward, the slope 20 of its actuating plate 18 engages with the slope IS at the rear of the seesaw wheel.

As the cam worker 15 moves further forward, the actuating plate 18 rotates the rear part of the seesaw diameter downward against the spring force of the lift spring bin 11, as shown in FIG. In other words, the seesaw diameter rises, its upper die portion 8 comes into contact with the back surface of the workpiece W, and the central axis of the punch receiving hole becomes an extension of the central axis of the punch 17.

The lower surface of the seesaw diameter meets the upper surface of the lower mold holder, and the lift spring bin 11 sinks below the upper surface of the lower mold holder as shown by the broken line in the figure. After all, in this state, the work W is supported from the back side (lower side) by both the die part 3 of the fixed die 2 and the die part 8 of the see-saw diameter, and is pressed down by the pad 29 from the upper side. Note that the moving punch device 24 is also in a further advanced state.

When the upper die holder 28 descends to the lowest position, the cam worker 15 moves to the forward end, and the punch 17 punches a tapping hole in the workpiece W. At this time, the seesaw diameter is held down by the operating plate 18 of the cam worker 15, so the die portion 8 of the seesaw diameter does not move. Similarly, move 11. f-inch device 2
A punching process is performed on the work W by the punch 25 of No. 4. The punched scrap is discharged through the discharge hole 38 of the lower mold holder 1.

After the machining is completed, the upper die holder 28 moves up and back, and the cam worker 15 and moving punch device 24 are pushed back to their initial positions by the spring force of the respective return springs 22 and 27. As the cam worker 15 is retracted and its actuating plate 18 is disengaged from the seesaw diameter, the seesaw diameter is pushed up by the lift spring pin 11 as shown in FIG.

Rotate it to the fixed die 2 side as shown. In other words, from the back side of the processed work W, the upper die part 8 of the seesaw diameter
will leave. Therefore, even if the hole caused by the punching process protrudes from the back side, the workpiece W can be pulled out upward.

After this, the workpiece W is taken out and transferred to the next process.

In this example, the case of complex machining was given as an example, but of course the seesaw drill can also be used for single machining.
Further, the processing content is not limited to punching, processing, and punching, but can also be applied to other press processing.

In addition, the means for elastically rotating the see-saw diameter is not limited to one that pushes up from below like the lift spring bin 11, but also one that is pulled by a spring for a second,
There are many possibilities, such as installing a spring between the rotating shaft 6 and the rotating shaft 6.

Effects of the Invention> According to the workpiece processing and removal device according to the present invention, the moving die required in the conventional device for removing the workpiece is replaced with a seesaw die, so the overall size of the device can be significantly reduced. can be achieved, and the occupied space can be reduced. In addition, since it is combined with a fixed die, other machining can also be performed using the fixed die as the mold receiving side, making it possible to realize complex machining and improve work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a workpiece processing and removal device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the same embodiment in a different direction. corresponds to Third
5 to 5 are explanatory diagrams of the operation of the embodiment device, FIG. 6 is a cross-sectional view of the conventional device, and FIG. 7 is a cross-sectional view taken along the line -■. In the drawings, 1 is a lower die holder, 2 is a fixed die, 7 is a seesaw die, 11 is a lift spring bin, 15 is a cam worker, 17 is a break-through punch, 18 is an operating plate, 21 is a wear plate, 24 is a moving punch device, 25 is a punch, 28 is an upper mold holder, 29 is a parapet, and 36.37 is a driver surface.

Claims (1)

[Claims] The seesaw die is swingably supported by applying a spring force in the direction of rotation to the fixed die side that receives a part of the workpiece, and a die part that receives a part of the workpiece is formed in the upper part of the seesaw die. A receiving part for a processing tool is formed in the die part, and a cam worker is provided so as to be able to move forward and backward with respect to the seesaw die, and a processing tool for processing the workpiece is installed in the front part of the cam worker. The cam worker is configured to move forward relative to the seesaw die by engagement with the mold holder, and the cam worker is provided with an operating portion that engages with the seesaw die to raise the seesaw die against a spring force when the cam worker moves forward. A workpiece processing and removal device characterized by: