JP2001079625A - Device for moving press die - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remarkably improve the working efficiency of die changing. SOLUTION: This press-die moving device is constituted by providing a pressing truck 5 which is freely traveled hydraulic unit 53 which is mounted on the main body 51 of the truck of this pressing truck 5, clinder mechanism 57 for moving a die 9 on the pressing truck 5 toward an unloading truck 4 by driving with this hydraulic unit 53 and locking means for locking the pressing truck 5 to a setup truck 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press die moving apparatus for moving a press die for performing a press process on a workpiece to a bolster on a press bed.

[0002]

2. Description of the Related Art Conventionally, there has been known a press facility for performing a press process on a workpiece. This press equipment is centered on a press machine consisting of a press bed installed on the floor, a bolster for fixing the lower die mounted on the press bed, and an elevating member that lifts and lowers while supporting the upper die. There are provided ancillary equipment including a multi-track rail laid in parallel across the press machine, a setup cart provided on one side of these double-track rails so as to be able to travel, and a take-out cart provided on the other side. It has a basic configuration.

[0003] When the mold is mounted on the press machine, first, the setup carriage on which the press mold is mounted is carried along the rail to a position facing the press machine, and then the press mold is moved onto the bolster. Here, fixing the lower mold to the bolster and fixing the upper mold to the elevating member are performed. Thereafter, each time the workpiece is supplied onto the lower mold, the workpiece is pressed by the upper mold and the lower mold by lowering the elevating member. When changing the mold, move the mold used so far to the unloading cart waiting on the other rail and carry it out.
A new mold is mounted on the press machine in the same procedure as above.

[0004]

However, since the press die is usually made of a heavy metal block, it is necessary for an operator to transfer the press die from the setup trolley to the bolster or to remove the dies from the bolster to the trolley. However, it has to be performed by several people while using a tool such as a bur, which is extremely heavy labor and has a problem that the working efficiency is poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a press die moving apparatus capable of greatly improving the work efficiency of changing a die. It is the purpose.

[0006]

According to the first aspect of the present invention,
The press die transported by the setup cart is transferred to a bolster for performing various types of processing on the press die, and the press die completed above is removed from the opposite side of the bolster. A press die moving device for transferring to a bogie, wherein the press bogie is freely movable, a drive mechanism mounted on the press bogie, and a drive die of the drive mechanism takes out the press die on the setup bogie toward the bogie. And a locking mechanism for locking the pressing trolley to the setup trolley.

According to the present invention, by driving the drive mechanism of the pressing bogie and operating the moving mechanism in a state where the setup bogie having the press die mounted thereon is opposed to the bolster, the press die on the setup bogie is operated. The mold is transferred onto the bolster by the operation of the moving mechanism. In this state, the lower die of the press die is fixed to the bolster and the upper die is fixed to a predetermined elevating member, so that the die can be pressed.

Next, when replacing the mold, the lower mold and the upper mold are removed from the bolster and the elevating member in a state where the upper mold is stacked on the lower mold, and then the moving mechanism is driven by driving the driving mechanism again. Upon actuation, the press mold on the bolster is transferred onto the unloading trolley.

After the set-up cart on which the press die is mounted is opposed to the bolster, the press die on the set-up cart is placed on the bolster by the operation of the moving mechanism driven by the drive mechanism of the pressing cart. It is automatically transferred without human intervention, and is also removed from the bolster and automatically transferred to the trolley when replacing the press mold. As compared with the case where the mold is moved, the number of hands and the working time are reduced, and the working efficiency is improved.

According to a second aspect of the present invention, in the first aspect of the present invention, a hydraulic mechanism is employed as the driving mechanism, and the pressing rod is pressed by a hydraulic pressure from the hydraulic mechanism as the moving mechanism on the setup cart. The present invention is characterized in that a cylinder mechanism for projecting and retracting toward a mold is employed.

According to the present invention, the drive mechanism and the moving mechanism can be made compact by employing the hydraulic mechanism and the cylinder mechanism. Also, there is no self-propelled, and a stable and powerful force can be obtained.

According to a third aspect of the present invention, in the second aspect of the present invention, the setup cart has a frame having an upper surface substantially flush with a mounting surface on which the press die is mounted. A frame having a height substantially equal to the height of the mounting surface supporting the cylinder mechanism on the top surface of the pressing carriage, and the locking means extending in a horizontal direction perpendicular to the pressing rod; And a rotation lock piece rotatably supported about the support shaft. The rotation lock piece has a top end on the frame body. It is characterized in that a locking projection piece locked to the edge is provided.

According to the present invention, the locking piece is rotated around the support shaft in a state in which the pressing cart is arranged to face the setup cart, and the locking projection is engaged with the edge of the frame of the setup cart. Thereby, the pressing die is not separated when the pressing die is pressed by the pressing rod, and the inconvenience such that the pressing die is separated from the setup bogie due to the reaction and the press die is not moved to the bolster is avoided. You.

The invention described in claim 4 is the invention according to claim 2 or 3.
In the invention described in the above, an extension member that compensates for the shortage of the length of the pressing rod is provided.

According to this invention, even if the stroke of the pressing rod is short, the pressing rod is once protruded to the maximum stroke and then pulled back, and the extension member is interposed between the tip of the pressing rod and the press die. By pushing out the pushing rod again, the press die can be moved to the stroke length of the pushing rod or more.

[0016]

FIG. 1 is a perspective view showing one embodiment of a press facility to which a mold moving device according to the present invention is applied. As shown in this figure, a press equipment (press die moving device) 1 is a processing device for performing press working on a workpiece by a die (press die) 9 having a lower die 91 and an upper die 92 mounted thereon. 2 and a setup cart 3 for adjusting the mounting state of the mold 9 in advance to transfer the mold 9 to the processing device 2
And a take-out cart 4 for receiving the mold 9 taken out after being subjected to a predetermined process in the machining device 2, and a pressing cart 5 for transferring the mold 9 mounted on the setup cart 3 to the machining device 2.
And a basic configuration including:

On the floor where the press equipment 1 is installed, a double-tracked rail 11 is laid with the processing device 2 interposed therebetween, and on one of the rails 11 (the right rail 11 in FIG. 1), the setup truck 3 can run freely. And the take-out cart 4 is arranged on the other rail 11 so as to be able to travel freely.

The processing apparatus 2 comprises a base 21 mounted on a floor, a bolster 22 mounted on the base 21 and formed of a thick metal plate on which the mold 9 is mounted. It includes lifting means 23 provided at a position above the bolster 22 and indicated by a two-dot chain line. On the surface side of the bolster 22, a plurality of T-shaped slots 24 extending in a direction perpendicular to the rail 11 and having an inverted T-shaped groove in cross section are formed. After the lower die 91 of the die 9 is transferred onto the bolster 22, these T
The upper mold 92 is fixed to the bolster 22 by bolts fitted into the mold slots 24, and
In this manner, the workpiece (not shown) can be pressed by the mold 9.

The setup cart 3 has four columns 31,
A rectangular frame 32 in a plan view supported by the columns 31
And a roller row 33 composed of a large number of rollers disposed in a space surrounded by the frame 32. Each pillar 3
Wheels 34 are provided on the bottom of 1, and the rolling of the wheels 34 can move the setup truck 3 along the rail 11. The height of the upper surface of the roller array 33 is set slightly higher than the height of the upper edge of the frame 32. The roller rows 33 are provided in a plurality of rows toward the bolster 22 so that the dies 9 placed on the roller rows 33 can easily move toward the bolster 22 by rolling of each roller. It has become.

The frame 32 of the setup cart 3 includes:
A bridge member 35 projecting from the bolster 22 via a slight clearance is protruded. This bridge member 3
5 also has a plurality of rollers arranged side by side, so that the dies 9 on the setup carriage 3 can be easily moved onto the bolster 22 by rolling of these rollers.

The take-out trolley 4 has basically the same construction as the setup trolley 3. That is, four pillars 41
And a rectangular frame 42 supported by these columns 41,
A roller row 43 is provided on the frame 42. Wheels 44 are provided at the bottom of each support 41, and these wheels 4
By the rolling of 4, the take-out cart 4 can be moved along the rail 11.

The frame 42 of the take-out cart 4 also has
As in the case of the setup cart 3, a bridge member 45 that is bridged to the bolster 22 via a slight clearance is protrudingly provided. The bridge member 45 is also provided with a plurality of rollers arranged side by side, and the rollers 9 roll so that the mold 9 on the bolster 22 can be taken out and easily moved onto the carriage 4.

FIG. 2 is a perspective view showing an embodiment of the pressing carriage 5. As shown in FIG. As shown in this figure, the pressing bogie 5 includes a bogie main body 51 provided with casters 51a at four corner bottom portions,
A hydraulic unit (drive mechanism) 53 mounted on the bogie main body 51, a cylinder mechanism 57 operated by hydraulic pressure from the hydraulic unit 53, and a locking means 58 for locking the pressing bogie 5 to the setup bogie 3 are provided. It is configured.

The bogie main body 51 is provided with a total of four columns 52 in a pair at the front and rear positions (left and right positions in FIG. 2). A support 52 is provided between the tops of the columns 52.
a is crosslinked. A hydraulic unit 53 is provided below the support 52a, and a cylinder mechanism 57 is provided on the support 52a. An inverted U-shaped handle 51b is erected at the rear end (right end in FIG. 2) of the carriage body 51, and the pressing carriage 5 can be easily moved by gripping and pushing the handle 51b. I'm trying to get.

The hydraulic unit 53 includes an oil tank 54 for storing hydraulic oil, a hydraulic pump 55 for pumping up and discharging the hydraulic oil in the oil tank 54, and a flow of the hydraulic oil discharged from the hydraulic pump 55. An electromagnetic valve unit 56 for switching the path is provided.

The hydraulic pump 55 includes an electric motor 55a
Is driven by transmission of the drive rotation through a pulley and a transmission belt. The drive / stop of the electric motor 55a is performed by turning on / off a power switch (not shown). The solenoid valve unit 56 is operated by operating a changeover switch (not shown), whereby the flow path of the discharged hydraulic oil is switched to change the operation direction of the cylinder mechanism 57.

The cylinder mechanism 57 includes two hydraulic cylinders 57a disposed on the support 52a and two pressing rods 57b mounted on each hydraulic cylinder 57a. The hydraulic oil discharged from the hydraulic pump 55 is supplied to these hydraulic cylinders 57a via the electromagnetic valve unit 56, so that the pressing rod 57b
Project from the hydraulic cylinder 57a.

A pressing plate 57c is attached to the distal ends of the pair of pressing rods 57b in a cross-linked state, and when the pressing rod 57b projects from the hydraulic cylinder 57a, the mold 9 on the setup carriage 3 is pressed by the pressing plate 57c. Is pressed toward the bolster 22.

FIGS. 3A and 3B are perspective views showing an embodiment of the locking means 58. FIG. 3A shows a state immediately before the rotation lock piece is locked to the frame of the setup cart, and FIG. , Respectively, show a state in which the rotation lock piece is locked to the frame of the setup cart. Although a pair of locking means 58 is provided in the width direction on the distal end side of the support base 52a, only one side is shown in FIG. 3 for convenience of illustration. As shown in this figure, a locking means 58 includes a horizontal shaft 58a protruding from a side surface of the distal end side (left side in FIG. 3) of the support base 52a in a direction orthogonal to the hydraulic cylinder 57a. And a rotation lock piece 58b which is rotatably supported by the shaft.

At the tip of the horizontal shaft 58a, a support 5
An elongated holding plate 58c parallel to 2a is fixed, whereby the rotation lock piece 58b supported by the horizontal shaft 58a is held between the side surface of the support base 52a and the holding plate 58c. Also, the rear portion of the holding plate 58c and the support 52a
A stopper shaft 58d is bridged between the supporting plate 52c and the side surface, so that a state in which the holding plate 58c is attached to the support 52a is stabilized.

Then, the normal rotation lock piece 58b is rotated clockwise around the horizontal axis 58a from the standing posture of FIG. 3A, and its tip end is supported by the stopper shaft 58d as shown by a two-dot chain line. Pressing cart 5
At the time of locking to the setup cart 3.

A mounting hole extending in the thickness direction is formed at the tip of the rotation lock piece 58b, and a lock pin 59 is press-fitted into the mounting hole. On the other hand, the frame 3 of the setup cart 3
A lock hole 32a provided at an upper surface position and corresponding to the lock pin 59 is formed in an edge portion facing the second pressing cart 5. By rotating the rotation lock piece 58b counterclockwise around the horizontal shaft 58a in a state where the pressing cart 5 is located at a predetermined position in front of the setup cart 3, FIG.
As shown in (b) of FIG.
a, and are mutually locked, whereby the pressing rod 57b projects by the driving of the cylinder mechanism 57, and the pressing plate 57
Even if c presses the mold 9, the pressing cart 5 is reliably prevented from moving in a direction away from the setup cart 3.

The present invention is not limited to providing the lock pin 59 on the rotation lock piece 58b and forming the lock hole 32a for fitting the lock pin 59 in the frame 32. Conversely, a lock pin may be provided on the frame 32 side, and a lock hole into which the lock pin is inserted may be formed on the rotation lock piece 58b.

FIG. 4 is an explanatory diagram for explaining the operation of the present invention. When transferring the mold 9 placed on the setup cart 3 to the bolster 22 of the processing apparatus 2, first, as shown in FIG.
The pressing cart 5 is locked by the locking means 58 so as not to be separated from the setup cart 3 in a state where the pushing cart 5 is located at a predetermined position on the right side of the above.

In this state, the hydraulic unit 53 is driven, and the cylinder mechanism 57 is operated to push the pressing rod 57b out of the hydraulic cylinder 57a. Then, the mold 9 is pressed to the left by the pressing plate 57c, and the pressing rod 57b protrudes by a substantial stroke, thereby moving onto the bolster 22 of the processing device 2 as shown in (b) of FIG. It is in the state that was done. In this state, the lower die 91 is fixed to the bolster 22 with bolts, and the upper die 92 is fixed to the elevating means 23 with bolts. Next, the pressing rod 57b is pulled back to the original position. As a result, the workpiece can be pressed.

Next, when the mold 9 is replaced,
As shown in FIG. 4C, the extension member 6 having a length substantially equal to the stroke length of the pressing rod 57b is fitted between the pressed back plate 57c and the mold 9. By projecting the pressing rod 57b again in this state, the mold 9 on the bolster 22 can be moved onto the unloading cart 4 as shown in FIG.

As shown in FIG. 4E, the preceding mold 9 (the left mold 9 in FIG. 4E) is a bolster 2.
When the following mold 9 (the mold 9 on the right side of FIG. 4E) is moved from the carriage 3 to the bolster 22 in a state where the predetermined mold is processed after arriving at 2, the front and rear molds are moved. In this state, when the succeeding mold 9 is pressed by driving the cylinder mechanism 57, the movement of the preceding mold 9 to the take-out carriage 4 and the movement of the succeeding mold 9 are performed. 9 is moved to the bolster 22 at the same time, whereby the movement of the mold 9 can be performed more efficiently.

FIG. 5 is a perspective view showing an embodiment of the extension member 6 described above. As shown in FIG.
Is a pair of square cylinders 61 in the front-rear direction, and a pair of cylinders 62 in the width direction bridged between the pair of square cylinders 61 by welding.
It consists of Then, one of the rectangular cylinders 61 is arranged as shown in FIG.
As shown in FIG. 6, the other rectangular cylinder 61 abuts against the pressing plate 57c of the pressing rod 57b of the cylinder mechanism 57.
Is brought into contact with the edge of the lower mold 91, so that the extension member 6 is disposed between the cylinder mechanism 57 and the lower mold 91. The operation of the extension member 6 is as described above.

[0039]

According to the first aspect of the present invention, the press die moving device is provided with a freely movable pressing bogie, a driving mechanism mounted on the pressing bogie, and a driving mechanism mounted on the pressing bogie. Because the moving mechanism for taking out the press mold and moving it toward the direction of the trolley, and the locking means for locking the pressing trolley to the setup trolley, the setup trolley on which the press mold is mounted is placed facing the bolster. By driving the drive mechanism and operating the moving mechanism, the press die on the setup trolley can be automatically transferred to the bolster without manual intervention, and the press die after press working is also the same. It can be automatically transferred from the bolster to the unloading trolley, reducing labor and working time compared to moving a heavy press die by several workers as before. Shrinkage can be achieved.

According to the second aspect of the invention, the drive mechanism and the moving mechanism can be made compact by employing the hydraulic mechanism and the cylinder mechanism. In addition, there is no self-propelling, and a stable and powerful force can be obtained.

According to the third aspect of the present invention, the locking piece is rotated around the support shaft in a state in which the pressing bogie is opposed to the setting bogie, and the locking projection is moved to the edge of the frame of the setting bogie. When the pressing die is pressed by the pressing rod, the pressing die does not separate, and when the pressing bogie is separated from the setup bogie by the reaction, the pressing die does not move to the bolster. Inconvenience can be reliably avoided.

According to the fourth aspect of the present invention, since the extension member which compensates for the shortage of the length of the pressing rod is employed, even if the stroke of the pressing rod is short, the pressing rod is once projected to the maximum stroke and then pulled back. By pressing the extension rod between the distal end of the pressing rod and the press die and projecting the push rod again, the press die can be moved to the stroke length of the push rod or more.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a press facility to which a mold moving device according to the present invention is applied.

FIG. 2 is a perspective view showing an embodiment of a pressing cart.

FIG. 3 is a perspective view showing an embodiment of a locking means,
(A) shows a state immediately before the rotation lock piece is locked to the frame of the setup cart, and (B) shows a state where the rotation lock piece is locked to the frame of the setup cart. .

FIGS. 4A to 4E are explanatory diagrams for explaining the operation of the present invention.

FIG. 5 is a perspective view showing one embodiment of a replenishing member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Die manufacturing apparatus 2 Processing apparatus 21 Base 22 Bolster 3 Setup trolley 4 Unloading trolley 5 Pressing trolley 51 Bogie main body 52 Prop 53 Hydraulic unit 57 Cylinder mechanism 58 Locking means 6 Extension member

Claims (4)

[Claims] 1. A press die moving device for transferring a press die carried by a setup cart to a bolster and transferring an old press mold to a take-out cart located on the opposite side of the bolster when exchanging the mold. A traveling carriage, a drive mechanism mounted on the carriage, a drive mechanism for driving the drive mechanism to move a press die on the setup carriage toward the carriage, and And a locking means for locking the cart to the setup cart. 2. A hydraulic mechanism is employed as the drive mechanism, and a cylinder mechanism is employed as the moving mechanism, which causes a pressing rod to protrude and retract toward a press die on a setup cart by hydraulic pressure from the hydraulic mechanism. The press die moving device according to claim 1, wherein: 3. The setup carriage has a frame body having an upper edge surface substantially flush with a placement surface on which a press die is placed, and the pressing carriage supports the cylinder mechanism on a top surface. A frame body having substantially the same height as the mounting surface is erected, and the locking means is a support shaft fixed to the frame body so as to extend in a horizontal direction perpendicular to the pressing rod; A rotation lock piece rotatably supported around the support shaft, and the rotation lock piece is provided with a locking projection on the top end thereof which is locked to an upper edge of the frame body. 3. The press die moving device according to claim 2, wherein: 4. The press-die moving device according to claim 2, further comprising a continuation member for compensating for the shortage of the length of the pressing rod.