JPH049057Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a press material conveying machine that automatically conveys press materials to a press machine having a plurality of press dies.

[Prior art] Conventionally, in a press processing machine that punches a product in a desired shape from a plate-shaped material, for example, a press material conveying machine that automatically conveys the press material is used to improve work efficiency and work safety. is used.

FIG. 10 shows an example of a conventional press material conveying machine. As shown in the figure, a plurality of swing levers 55 are moved by a drive unit 54 between a plurality of press molds 51, 52, 53 arranged in the X-axis direction of the press machine,
56, and a press material holding portion 57 for adsorbing the press material using, for example, a vacuum is provided at the tips of the swing levers 55, 56. and,
Move the swing levers 55 and 56 in the X-axis direction while the press material is adsorbed to the press material holding part 57,
From the first press mold 51 to the second press mold 52,
Further, from the second press die 52 to the third press die 5
The press materials are automatically conveyed to each of the press molds 51, 52, and 53, and are sequentially processed by the press molds 51, 52, and 53 to obtain a press-molded product having a required shape.

[Problem to be solved by the invention] In the conventional press material conveying machine that conveys the press material to the plurality of press molds 51, 52, 53,
Since swing levers 55 and 56 for conveying the press material are provided between each press mold, it is possible to prevent the swing levers 55 and 56 from coming into contact with the upper mold mounting parts of the press molds 51 to 53 that move up and down during press processing. need to be prevented. This has resulted in the disadvantage that the structure of the press die holding section of the press machine is complicated.

In addition, since the swinging lever for conveying the press material is provided between each press die arranged in the X-axis direction, the width of the press machine in the X-axis direction becomes large, and the press machine itself becomes large. It had the disadvantage of requiring a large installation area.

Furthermore, since the swinging lever that conveys the press material has a large swinging motion range, the movement of the drive unit that drives the swing lever must also be large, and the press material conveyor must also be larger. There was a drawback.

This invention was devised to solve these disadvantages, and the purpose is to obtain a press material conveying machine that is small and has a simple structure and is capable of conveying press materials to a plurality of press dies. .

[Means for Solving the Problems] A press material conveying machine according to this invention is arranged in the Y-axis direction on the side surface of a press machine having a plurality of press molds arranged in the X-axis direction, and is capable of performing press processing in multiple steps. The press material conveying machine sequentially conveys the press materials to predetermined positions corresponding to the press molds in order to simultaneously perform a support shaft that is rotatable and arranged parallel to the main shaft; a plurality of connecting shafts that connect the main shaft and the support shaft to form a parallelogram link; link node means for making the quadrilateral link rotatable around the main axis and making the link angle of the parallelogram link variable; and one end fixed to the support shaft;
a work holding member provided at the other end with a work holding tool that removably holds the press material;
the first one directly above the press mold or a predetermined initial position;
a main shaft driving means for applying a predetermined rotational movement to the main shaft in order to move the workpiece holder between a standby position and a rest position located in a side direction outside the movable range of the press processing machine; and a support shaft driving means for applying a predetermined rotational movement to the support shaft in order to move the workpiece holder to the press mold or a press material attachment/detachment position in the predetermined initial position; a connecting shaft driving means for giving the connecting shaft a rocking motion for changing the link angle in order to move the workpiece holder to a different second standby position; 1. A press material conveying machine comprising: a cam-type main drive means for interlocking each of the drive means with a cam so that the pressed material conveyance is carried out by a cam.

[Function] Since the press material conveying machine according to the present invention is configured as described above, it sequentially moves the workpiece holder to a predetermined standby position, rest position, attachment/detachment position, etc., and also transfers the press material at the predetermined attachment/detachment position. Attach and detach. The movement of this workpiece holder depends on the shape of the cam of the main drive means. That is, by driving the cam by the main drive means, each drive means of the parallelogram link is operated in sequence, and the workpiece holder is sequentially moved in the X-axis direction, the Y-axis direction, and the Z-axis direction, which is the vertical direction. Simultaneously conveys press materials needed for multiple press dies.

The operation of each driving means will be explained individually.

First, the press material is placed at a predetermined initial position, and the workpiece holder is moved from the rest position to the press die or to a first standby position directly above the predetermined initial position by driving the spindle drive means or the like.

Then, by driving the support shaft driving means, the work holder is moved to the press material attachment/detachment position, and after the work holder holds the press material,
By driving the support shaft driving means in the opposite direction, the work holder holding the press material is lifted from the attachment/detachment position and moved to the first standby position.

Next, by driving the connecting shaft drive means, the work holder holding the press material is moved to a second standby position different from the above.

Here, by driving the support shaft drive means again, the work holder holding the press material is lowered to a different attachment/detachment position, and after the work holder has removed the press material, the support shaft drive means is activated. By driving in the opposite direction, it is lifted from this attachment/detachment position and moved to the second standby position.

Through the above operations, the press material moves from a predetermined initial position to a predetermined position corresponding to the first press die, and simultaneously from a predetermined position corresponding to the first press die to a predetermined position corresponding to the second press die. and sequentially transported to multiple press molds.

Here, since the standby position is located directly above the press mold, it is necessary to move the workpiece holder and any part of this conveyor to a position (rest position) out of the movable range of the press machine.

Therefore, by driving the main shaft drive means, the work holder is moved from the second standby position to a predetermined rest position located in the Y-axis direction of the side surface of the press machine.

In this state, the press molding machine is operated to perform press processing using the press material.

By repeating each of the above operations, the press materials are sequentially conveyed.

Here, each of the driving means is performed by appropriately driving the main driving means using a predetermined cam. Each drive means may be actuated by a separate and unique cam, and may be operated in conjunction with other drive means during its operation, or may be driven independently. That is, after the workpiece holder is temporarily stopped at a standby position or the like during the movement process,
The driving means operating before and after that may be changed to perform the next operation, or a plurality of driving means may be combined before and after the standby position to perform various continuous operations.

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

FIG. 1 is a schematic plan view of an embodiment of this invention, and FIG. 2 is a side view. In the figure, 1
is a press material conveying machine installed on the side surface in the Y-axis direction of a processing machine 50 in which a plurality of press molds 51, 52, and 53 are arranged in the X-axis direction. Note that 58 is a press die 5 for first placing the press material to be conveyed.
This is a workpiece mounting table provided on the same straight line as 1, 52, and 53 in the X-axis direction.

A drive shaft 2 is attached to the housing 3 along the Y-axis direction perpendicular to the X-axis direction in which the press dies 51 to 53 are arranged, and the drive shaft 2 is rotationally driven by a motor (not shown).

4 is an X cam fixed to the drive shaft 2 and provides movement in the X-axis direction; 5 is a housing 3 along the Y-axis direction;
The rotating shaft 5 is connected to the drive shaft 2 by a pair of bevel gears 6a and 6b, and rotates in conjunction with the rotation of the drive shaft 2. A Y cam 7 is fixed to the end of the rotating shaft 5 and provides movement in the Y-axis direction, and a Z cam 8 is also fixed to the rotating shaft 4 and provides movement in the Z-axis direction, which is the vertical direction. These constitute a part of the main drive means and each drive means.

A main shaft 9 is attached to the housing 3 in parallel with the rotating shaft 5, and the main shaft 9 is rotatable with respect to the housing 3. Reference numeral 10 denotes a rotating lever whose one end is fixed to the main shaft 9. A roller 11 is provided at the tip of the rotating lever 10 as shown in the sectional view taken along the line A-A in FIG. It is engaged with Y cam 7. The main shaft 9 is driven by the action of the cam 7.

12 is a lever for vertical movement whose one end is rotatably attached to the main shaft 9, and the lever 12 for vertical movement is provided with a roller 13 at its tip, as shown in the sectional view taken along the line B-B in FIG. and is engaged with the Z cam 8 by a roller 13. Reference numerals 14 and 15 designate connection shafts attached to the main shaft 9 through a shaft 16, and these connection shafts 14 and 15 are capable of swinging in the axial direction of the main shaft 9 about the shaft 16.

Reference numeral 20 denotes a swinging arm whose one end is attached to the housing 3. The swinging arm 20 is able to swing freely in the X-axis direction, and has a center portion that engages with the X-cam 4. A matching roller 21 is provided. The tip of the swing arm 20 and the center of the connecting shaft 14 are connected to each other by a connecting rod 22 via a universal joint. The action of this cam 4 drives the connecting shaft 14.

Reference numeral 17 denotes a support shaft connected between the distal ends of the connection shafts 14 and 15, and the support shaft 17 is rotatable relative to the connection shafts 14 and 15 by a universal joint.
Reference numerals 18a to 18c are holding levers that are fixed to the support shaft 17 and have a workpiece holder 19 at the tip thereof that attracts the workpiece.

As shown in FIG. 4, 23 is a parallelogram link whose one end is connected to the vertical movement lever 12, and the other end of the link 23 is engaged with a crank arm 24 fixed to the support shaft 17. ing. Here, the holding lever 18 is
The supporting shaft 17 is connected to the connecting shaft 1 so as to keep the angle constant.
4, and the support shaft 17 is driven by the action of the Z cam 8.

5 to 7 show examples of the cam shapes of the X cam 4, Y cam 7, and Z cam 8 used in the press material conveying machine 1 configured as described above, and FIG. 6 shows the shape of the Y cam 7, and FIG. 8 shows the shape of the Z cam 8. Further, symbols a1 to h3 in each figure indicate operating points of each cam.

Next, press material conveying machine 1 configured as described above
The operation will be explained with reference to the cam displacement diagram shown in FIG. 8 and the schematic configuration diagram of the present invention shown in FIG. 9.
In FIG. 8, a shows the displacement diagram of the X cam 4, b shows the displacement diagram of the Y cam 7, and c shows the displacement diagram of the Z cam 8. In FIG. 9, 25 shows the rest position of the connecting shaft 14 at the origin of the machine coordinate system.

When the drive shaft 2 is rotated by the drive source (not shown) of the main drive means, the X cam 4 fixed to the drive shaft 2 rotates, and the rotating shaft 5 is also rotated by the bevel gears 6a and 6b. Y cam 7 and Z cam 8 fixed to 5 rotate.

Due to this rotation, the operating point of the X cam 4 is a1.
By displacing the swinging arm 20 in the X-axis direction, the connecting shafts 14 and 15 connected to the swinging arm 20 by the connecting rod 22 move from the rest position 25 in the X-axis direction. begins to shift. When the rotation of the drive shaft 2 progresses and the operating point of the Y cam 7 reaches a2, the Y cam 7 starts to rotate the rotary lever 10, and the main shaft 9 is rotated in the direction of the arrow 26. Due to this rotation of the main shaft 9, the connecting shafts 14 and 15 also begin to rotate in the Y-axis direction. Therefore, the connecting shafts 14 and 15
FIG. 1 shows a workpiece holder 19 that rotates in an oblique direction as shown by an arrow 29 with respect to the axial direction and the Y-axis direction and is located at the tip of the workpiece holding levers 18a to 18c as shown by the chain line in FIG. It is moved in the direction of the workpiece mounting table 58 and the press molds 51 and 52.

When the operating point of the X cam 4 reaches b1 and the operating point of the Y cam 7 reaches b2, and the workpiece holder 19 moves to the standby position above the workpiece mounting table 58 and the press molds 51 and 52, the connecting shaft 14 , 15 stop rotating.

Immediately before the rotation of the connecting shafts 14, 15 stops, the operating point of the Z cam 8 reaches a3, and the Z cam 8 begins to rotate the vertical movement lever 12 in the direction of arrow 27 in FIG. When the vertical movement lever 12 rotates in the direction of arrow 27, the link 2
3 is displaced upward to displace the crank arm 24 upward. This displacement of the crank arm 24 causes the support shaft 17 to rotate in the direction of the arrow 28, thereby moving the work holder 19 at the tips of the work holding levers 18a to 18c downward in the Z-axis direction.

When the operating point of the Z cam 8 reaches b3, the workpiece holder 19 is moved to the press molds 51 and 5 of the workpiece mounting table 58.
2, the press material to be processed placed on the workpiece mounting table 58 and the partially processed press material placed on the press dies 51 and 52 are moved to a predetermined attachment/detachment position in contact with the It is adsorbed and held by an adsorption means.

When the drive shaft 2 further rotates and the operating point of the Z cam 8 shifts from c3 to d3, the vertical movement lever 12
rotates in the opposite direction to move the work holder 19 to the upper standby position.

Then, the workpiece holder 19 is moved upward while holding the press material, and the operating point of the X cam 4 is set to c.
1, the swing arm 20 is rotated by the X cam 4 in the opposite direction, and the workpiece holder 19 is moved in the opposite direction of the X axis via the connecting shafts 14 and 15. When the operating point of the X cam 4 reaches d1 and the work holders 19 of the work holding levers 18a to 18c reach the standby positions above the press dies 51 to 53, the movement of the work holders 19 is stopped.

Immediately before the workpiece holder 19 stops, the support shaft 17 begins to rotate in the Z-axis direction by the Z cam 8.
When the operating point of the cam 8 reaches f3, the workpiece holder 19 is moved to the attachment/detachment position where it comes into contact with the press dies 51 to 53, and the held press material is moved to the press die 51.
~ Installed on 53.

Thereafter, as the operating point shifts from g3 to h3 due to the rotation of the Z cam 8, the workpiece holder 19 is raised and moved to the standby position.

On the other hand, when the Y cam 7 reaches the operating point c2, the Y cam 7 rotates the rotary lever 10 in the direction opposite to the arrow 26, and when the operating point reaches d2, the connecting shafts 14 and 15 are brought to the rest position 25. Bring it back.

In this state, the processing machine 50 is operated to process the press material transported to a predetermined position to be processed corresponding to each of the press dies 51 to 53.

Thereafter, by repeating this operation, the press material is sequentially conveyed to the press dies 51 to 53, and multiple stages of press working are performed simultaneously.

[Effects of the invention] As explained above, the press material conveying machine of the invention uses the cam of the cam type main drive means to
A press material holder that holds the press material is moved in the X-axis direction and the Y-axis direction from the side direction of a plurality of press molds arranged in the X-axis direction, and the press material is moved to a standby position at the upper part of the press mold, And by moving the press material holder in the Z-axis direction, which is the vertical direction,
Since the press material is moved between the standby position and the attachment/detachment position, and the press material is attached/detached at the attachment/detachment position, it is possible to transport the press material needed for multiple press dies. Press materials can be conveyed sequentially, automatically, and simultaneously.

In addition, since the press material can be continuously fed, there is an advantage that a large amount of parts can be processed in a short time.

Furthermore, since there is no need for the operator to directly place the press material in a predetermined position corresponding to the press die, accidents to the operator can be prevented and safety is high.

In addition, the X
Since it is possible to move from the Y-axis direction perpendicular to the axial direction, the distance between multiple press dies can be shortened, the press processing machine itself can be downsized, and the processing speed during press processing can be reduced. The structure of the processing machine can also be simplified because the conveyance section does not hit the machine.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of this invention,
Figure 1 is a plan view, Figure 2 is a side view, Figure 3 is a
FIG. 4 is a cross-sectional view taken along line B-B in FIG. 2, and FIGS. FIG. 8 is a cam shape diagram of the cam, FIG. 8 is a displacement diagram of the cam in the above embodiment, FIG. 9 is a schematic configuration diagram showing the mechanism of the present invention, and FIG. 10 is a plan view showing a conventional example. Explanation of the symbols of the main parts, 1... Press material conveyor, 2... Drive shaft, 4... X cam, 5... Rotating shaft, 7... Y cam, 8... Z cam, 9... Main shaft,
10... Rotation lever, 12... Vertical movement lever,
14, 15... Connection shaft, 17... Support shaft, 18
a, 18b, 18c... Work holding lever, 19
...Work holder, 20...Swing arm, 22...
... Connecting rod, 23 ... Link, 24 ... Crank arm, 51 to 53 ... Press mold, 58 ... Workpiece mounting table.

Claims (1)

[Claims for Utility Model Registration] A press machine having a plurality of press dies arranged in the X-axis direction is disposed in the Y-axis direction on the side surface thereof, and is adapted to correspond to the press dies in order to perform multiple press processes simultaneously. A press material conveying machine that sequentially conveys press materials to predetermined positions, the main shaft being rotatable around an axis disposed along the X-axis direction, and a rotating shaft disposed parallel to the main axis. a plurality of connecting shafts that connect the main shaft and the supporting shaft to form a parallelogram link;
The parallelogram link is rotatable around the main axis by the rotation of the main axis, and a link node means for making the link angle of the parallelogram link variable; and one end of the parallelogram link is fixed to the support shaft. , a work holding member provided with a work holding tool for removably holding the press material at the other end thereof, and a first standby position directly above the press die or a predetermined initial position and a work holding member for holding the press material in a detachable manner; a main shaft driving means for applying a predetermined rotational movement to the main shaft in order to move the work holder to a rest position located in a lateral direction outside the movable range; a support shaft driving means for applying a predetermined rotational movement to the support shaft in order to move the work holder to a press material attachment/detachment position; a connecting shaft drive means for giving the connecting shaft a swinging motion for changing the link angle in order to move the workpiece holder; and a cam for conveying the press material to the press die in a predetermined order. Accordingly, a pressed material conveying machine is provided with a cam-type main drive means for interlocking the respective drive means.