JPH0741533Y2 - Work transfer tool changer for transfer press - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work transfer tool changing device for a transfer press.

[0002]

2. Description of the Related Art In a transfer press, a plurality of upper and lower molds are arranged side by side in a line direction, and a cross bar extending between the upper and lower molds in a direction perpendicular to the line direction can be reciprocated in the line direction and can be moved up and down. Install a work transfer tool such as a vacuum cup on the crossbar, hold the work pressed by each mold with the work transfer tool installed on the crossbar, and then move the crossbar up and down and move in the line direction. By doing so, it is possible to sequentially convey the work to the next die so that the work can be pressed a plurality of times one after another.

In such a transfer press, a pair of feed bars extending in the line direction are provided on both sides of a line of molds in the line direction so as to be capable of reciprocating and elevating in the line direction, and between the feed bars. A common feedbar system is one in which a crossbar is attached and the crossbar is moved by the feedbar.However, the feedbar system has the disadvantage that the moving parts are heavy and the line speed cannot be increased. By providing guides extending in the line direction on both sides of the mold row so as not to move during operation, a carriage that can reciprocate in the line direction is provided in the guide, and a crossbar is attached to the carriage so that the crossbar can move up and down. Applicants have implemented a trolley system in which the weight of the movable part is reduced and the speed of the line can be increased.

In such a transfer press, every time the mold is replaced, the work transfer tool must be replaced with a tool suitable for transferring the work pressed by the mold.

As a conventional work transfer tool exchanging device for a transfer press, there has been disclosed in Japanese Utility Model Laid-Open No. 62-193926-8.
There is one disclosed in Japanese Patent No.
The one disclosed in JP-A-2-193927 is shown in FIG.
Will be outlined.

In the figure, 1 is a transfer press, and 2 is a carrier of the transfer press 1, which supports a mold 4 through a plate 3 on its upper surface and moves in a line direction a and a direction b at a right angle to the transfer press 1. The mold 4 can be put in and taken out of the inside.

Reference numeral 5 denotes a pair of feed bars extending in the line direction a, which can reciprocate in the line direction a and can be moved up and down. Reference numeral 6 denotes a cross bar provided so as to be removable between the pair of feed bars 5, and a work transfer tool such as a vacuum cup (not shown) is attached thereto.

A rear end of a rod 7 is pivotally supported on the plate 3 through a rotary shaft 8 extending in the line direction a so as to be able to rise and fall in a direction b perpendicular to the line direction a, and a crossbar holder is provided at the tip of the rod 7. 9 is attached, and the pinion 1 is integrally formed on the rotary shaft 8.
0, the pinion 10 is rack 11, pinion 1
2. The cylinder 14 is configured to be rotationally driven via the rack 13.

By pulling out the carrier 2 in the line direction a and the direction b at right angles, the mold 4 on the plate 3 of the carrier 2 is drawn.
To the outside of the transfer press 1.

After removing the mold 4 from the plate 3 of the carrier 2 and replacing it with another mold 4, the mold 4 is replaced by returning the carrier 2 to the inside of the transfer press 1.

Separately from this, by extending or contracting the cylinder 14, the rod 7 is erected through the rack 13, the pinion 12, the rack 11, and the pinion 10, and the crossbar holder 9 at the tip of the rod 7 crossbars. 6
The crossbar 6 and then the feedbar 5
The crossbar 6 by separating it from the
To the outside of the transfer press 1.

After removing the crossbar 6 from the crossbar holder 9 at the tip of the rod 7 and replacing it with another crossbar 6,
The rod 7 is erected, the cross bar 6 is attached to the feed bar 5, and the rod 7 is tilted again, whereby the cross bar 6 is exchanged.

In this system, the removed mold 4 and crossbar 6 are stored separately.

Another example of the conventional work transfer tool changing device for a transfer press is disclosed in Japanese Patent Laid-Open No. 62-23.
There is one disclosed in Japanese Patent No. 8032.

The one disclosed in Japanese Patent Laid-Open No. 62-238032 is composed of means for attaching and detaching the crossbar to and from the feedbar, and a groove for mounting the crossbar formed on the upper surface of the upper die. Place the upper die separated from the transfer press on the lower die, place the crossbar separated from the feed bar in the groove on the upper die upper surface, and use the carrier etc. to line the lower die. By moving the lower mold, upper mold and crossbar integrally from the transfer press by moving in the direction perpendicular to the direction and replacing the upper and lower molds and crossbar on the carrier with new ones, the opposite of the above By performing the procedure, the upper and lower molds and the crossbar are exchanged.

In this method, the upper and lower molds and the crossbar which have been removed are stored together.

[0017]

However, the conventional work transfer tool changing device of the transfer press has the following problems.

In Japanese Utility Model Laid-Open No. 62-193926-8, the mold 4 and the crossbar 6 are detached separately, so both of them are stored separately.
Therefore, every time the mold 4 was replaced, the corresponding crossbar 6 had to be searched.

Further, since the mold 4 and the crossbar 6 are detached separately, two sets of the crossbars 6 are prepared, the work transfer tool is replaced, and the crossbars 6 are alternately used. By doing so, the crossbar 6 can be shared by the respective molds 4, but in this case, the work is manually performed on the outer crossbar 6 taken out from the transfer press 1. Since it was necessary to change the transfer tool every time, it took a lot of work.

In the case of Japanese Patent Laid-Open No. 62-238032, since the die and the crossbar can be stored integrally, it is not necessary to search the crossbar corresponding to the die when exchanging the die, It is necessary to prepare the same number of bars as the number of molds, and since the size of the mold and the crossbar that are integrated together becomes large, a large storage space is required.

In view of the above situation, the present invention enables the work transfer tool to be attached to and detached from the crossbar, and replaces only the work transfer tool with the mold, thereby reducing the storage space and reducing the crossbar. Can be reduced to one type, and since the work transfer tools are completely stored in the recessed part of the mold, the molds can be stacked, and the mounting part is swingably supported by the swing support part. Thus, the swing support part corrects the placement error of the work transfer tool on the placement part and the removal error from the placement part, and the work transfer tool can be placed or removed even if there is a slight positional deviation. It is an object of the present invention to provide a work transfer tool changing device for a transfer press.

A cross bar extending in a direction perpendicular to the line direction is provided between a plurality of upper and lower molds arranged in parallel in the line direction so as to be capable of reciprocating in the line direction and being movable up and down, and a work transfer tool is provided on the cross bar. The detachable member provided is detachably attached, a positioning hole is formed in the detachable member, and a recessed portion capable of completely accommodating the detachable member and the work transfer tool is formed on the upper surface of the mold, and the recessed portion is provided with the recessed portion. Detachable member position
Positioning shaft with tapered upper end that fits into the setting hole
Provided but the mounting portion for workpiece transfer tool that protrudes on the upper surface
The base plate placed at a distance below the mounting part.
Between the mount and the mounting part, the support column with the retaining parts at the upper and lower ends.
Loosely insert the bolts,
The mounting portion is elastically supported between the base plate and the mounting portion.
It is made by externally fitting a spring,
A work transfer tool changing device for a transfer press, characterized in that a swing support part capable of swinging slightly horizontally is provided, and the swing support part of the work transfer tool changing device for a transfer press . The present invention relates to a work transfer tool exchanging device provided with a lifting mechanism part for lowering and lowering a placing part and a swing support part in a lower part .

[0023]

[Function] The cross bar is moved to place the work transfer tool on the mounting section of the work transfer tool holding section in the recess of the die by aligning the positioning tool of the work transfer tool with the positioning tool of the mounting section. When the work transfer tool is positioned and the work transfer tool is removed from the crossbar, the work transfer tool is held on the mounting portion of the work transfer tool holding portion of the mold. At this time, even if there is a slight displacement, the swing support portion swings to correct the error.

Thereafter, the mold is taken out together with the work transfer tool, a new mold and a work transfer tool are replaced, and the procedure opposite to the above is followed to replace the mold and the work transfer tool.

[0025]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 6 show an embodiment of the present invention and show an example applied to a trolley type transfer press.

Reference numeral 15 in the drawing denotes a column of the transfer press 16, which is provided so as to form a pair on the left and right, and a plurality of columns are arranged at a predetermined interval in the line direction a.

Reference numeral 17 denotes a carrier disposed in the lower part between the columns 15, which supports the lower mold 19 through the plate 18 on the upper part and is perpendicular to the paper surface of FIG. It can be moved in and out of the transfer press 16.

Reference numeral 20 denotes a pressing device disposed above the columns 15 so that the upper die 21 can be moved up and down.

Reference numeral 22 denotes a pair of left and right guides which are supported in the middle portion of the row of the left and right columns 15 via a height adjusting mechanism 23 such as a cylinder, and do not move up and down during operation.

Reference numeral 24 is a guide 22 by a roller not shown.
Are a plurality of carriages provided so as to be reciprocally movable in the line direction a along the upper and lower molds 1 by a connecting bar 25.
They are connected so that they have the same pitch as 9 and 21, and can move integrally.

Reference numeral 26 is a vertical rack that is supported so as to vertically penetrate each carriage 24, and is vertically driven via a horizontal rack 27 and a pinion 28 that extend in the line direction a.

Reference numeral 29 is a cross bar disposed between the lower ends of the left and right vertical racks 26, and is a member formed at both ends by rods 47 of a clamp cylinder 32 rotatably supported by a motor 30 and a speed reducer 31. The fitting hole 48 is detachably locked.

The rod 47 and the engaging hole 48 are formed, for example, in a polygonal cross section so that the clamp cylinder 32 and the crossbar 29 can rotate integrally.

A feed lever 33 is rotatably pivotally attached to the main shaft 34 near the lower end, and the upper end is connected to the carriage 24 at the uppermost stream or the most downstream by the feed rod 35 and integrally with the drive shaft 36. The rotating feed cam 37 is swung by a cam follower 38 attached to the lower end to reciprocate the carriage 24 in the line direction a.

Reference numeral 39 denotes an elevating lever rotatably connected to the main shaft 34 at an intermediate portion thereof. The elevating lever 39 swings through a cam follower 41 attached at one end by an elevating cam 40 which rotates integrally with the drive shaft 36. It is supposed to be done.

Reference numeral 42 denotes an elevating bracket which is pivotally attached to the upper end of the feed lever 33 at an intermediate portion thereof, and one end of which is engaged with a pinion 43 which engages with the horizontal rack 27 provided inside the cart 24 at the most upstream or most downstream. Sector gear 44
And the other end of the elevating lever 39 is connected by the elevating rod 46, and when the elevating lever 39 swings, the elevating rod 46, the elevating bracket 42, the elevating rod 45, the sector gear 44, and the pinion. Four
The cross bar 29 attached to the lower end of the vertical rack 26 is vertically moved via the horizontal rack 27 and the pinion 28.

In FIG. 1, the feed lever 33 and the elevating lever 39 are pressed against the feed cam 37 and the elevating cam 40, respectively, by a restraining cylinder (not shown).

An engaging hole 49 and a clamp insertion / removal hole 50 are formed on the lower surface of the crossbar 29 at predetermined intervals, and a pin 52 is used for a bracket 51 fixed near the clamp insertion / removal hole 50 inside the crossbar 29. The clamp 53 so that the clamp 53 can freely move in and out from the clamp hole 50, and the crossbar 2
The clamp 53 installed inside the clamp cylinder 5
By the operation of No. 4, the clamp can be moved in and out from the clamp hole 50.

Liners 55 are provided on both sides of the central portion of the crossbar 29.
Install.

A detachable member 5 having a U-shape whose cross section opens upward.
6 is externally fitted to the central portion of the crossbar 29 from below, and the liner 57 slidably contacting the liner 55 mounted on both sides of the central portion of the crossbar 29 is attached to the inside of both U-shaped arms of the detachable member 56 to attach and detach. A protrusion 58 that fits into the engagement hole 49 on the bottom surface of the crossbar 29 is formed inside the bottom portion of 56, and a clamp insertion / reception hole 59 that matches the clamp insertion / removal hole 50 on the bottom surface of the crossbar 29 is formed on the bottom portion. The attachment / detachment member 56 can be detachably held on the crossbar 29.

Further, a shaft hole (positioning tool) 60 for positioning is formed at two locations on the bottom of the detachable member 56, and a work transfer tool such as a vacuum cup is provided on both outer sides of the arm of the detachable member 56. Install 61.

A recess 62 is formed on the upper surface of the upper mold 21 so that the work transfer tool 61 can be completely stored therein without the tip protruding from the upper surface at the time of storage, and the center of the bottom surface of the recess 62 will be described later. The base plate 65 of the swing support portion 64 that swingably supports the mounting portion 63 is fixed.

At the bottoms of both ends of the base plate 65, recesses 67 for oscillating the post bolts 66, which will reach the vicinity of the upper surface and form a left-right pair, which will be described later, are formed. A bolt hole 68 penetrating the upper surface is formed at the central portion of the portion 67.

Above the base plate 65, a main body plate 69 which is a main body of a mounting portion 63 for mounting the attachment / detachment member 56 to which the work transfer tool 61 is mounted is arranged. Are bolt holes 70 formed at both ends in the width direction and the corresponding base plate 6
5 bolt holes 68, each of which is loosely inserted in series into the upper and lower ends.
A pillar bolt 66 having a stop portion and a spring 71 externally inserted to the pillar bolt 66 make it possible to move up and down and horizontally.
It is supported so that it can be swung slightly .

At the central portion in the width direction of the upper surface of the main body plate 69, a positioning shaft (positioning tool) 7 having a tapered upper end that can be loosely inserted into the shaft hole 60 of the detachable member 56.
2 are erected at two positions, and a disk 73 for mounting the detachable member 56 is fixed to the shaft 72 at a substantially intermediate height position.

The mounting portion 63 comprises the body plate 69, the shaft 72, and the disc 73, and the swing support portion 64 includes the base plate 65 and the pillar bolts 6.
6, a spring 71, and these mounting portions 6
The work transfer tool holding portion 74 is composed of the 3 and the swing support portion 64.

Next, the operation will be described.

By rotating the drive shaft 36, the carriage 24 connected by the connecting bar 25 via the feed cam 37, the cam follower 38, the feed lever 33, and the feed rod 35.
Reciprocally move along the guide 22 in the line direction a, and the works (not shown) suction-supported by the work transfer tools 61 integrated with the carriages 24 are sequentially moved to the lower mold 19 on the downstream side.

On the other hand, in synchronization with this, the rotation of the drive shaft 36 causes the lifting cam 40, the cam follower 41, and the lifting lever 3 to rotate.
9, lifting rod 46, lifting bracket 42, lifting rod 45, sector gear 44, pinion 43, horizontal rack 2
7. The vertical rack 26 moves up and down via the pinion 28, and the workpieces (not shown) suction-supported by the workpiece transfer tool 61 integrated with the vertical rack 26 are sequentially lifted from the upstream lower die 19 and the downstream lower die. It is dropped on 19th.

Then, when the work is placed on the lower mold 19, the upper mold 21 is lowered by the pressing device 20, and the work is pressed between the upper and lower molds 19, 21.

In this way, the work is sequentially fed and pressed a plurality of times.

Further, by tilting the crossbar 29 together with the clamp cylinder 32 via the motor 30 and the speed reducer 31, the work transfer posture is adjusted.

Further, the guide 22 is provided by the height adjusting mechanism 23.
Is adjusted according to the molds 19 and 21.

When replacing the molds 19 and 21, first, the operation of the transfer press 16 is stopped, and
As shown by the phantom line, the position of the work transfer tool 61 is moved to the intermediate position between the upstream and downstream dies 19, 21.

Next, the press device 20 is driven to drive the upper mold 2.
1 is lowered to the upper part of the lower mold 19, the upper mold 21 is separated from the press device 20, and the upper mold 21 is placed on the upper part of the lower mold 19.

Thereafter, the work transfer tool 61 is moved to the upper part of the molds 19 and 21 as shown by the solid line in FIG. 1 to move the shaft hole 60 of the detachable member 56 and the shaft 7 of the main body plate 69.
2, the guide 22 is lowered by the height adjusting mechanism 23, and the attachment / detachment member 56 to which the work transfer tool 61 is attached is loosely inserted into the shaft hole 60 in the shaft 72, and the disc of the mounting portion 63 is discriminated. The work transfer tool 61 is completely accommodated in the recess 62 formed on the upper surface of the upper mold 21 by placing the work transfer tool 61 on the work piece 73. At this time, even if there is a slight displacement, the shaft 72 of the swing support portion 64 and the spring 71 swing and the error can be corrected, so that the disk 73 can be placed on the disk 73. Next, the clamp cylinder 54 is contracted to house the clamp 53 in the crossbar 29 through the clamp insertion / removal holes 50 and 59, and the detachable member 56 is attached to the crossbar 29.
Disconnect from.

Then, the carrier 17 together with the plate 18 on which the upper and lower molds 19 and 21 and the work transfer tool 61 are placed.
Is moved in a direction perpendicular to the paper surface of FIG. 1, that is, in a direction b perpendicular to the line direction a, and pulled out from the transfer press 16, and the upper and lower molds 19 and 21 and the work transfer tool 61 are removed from the plate 18, and a new metal The molds 19 and 21 and the work transfer tool 61 are replaced.

After that, new molds 19 and 21 and the work transfer tool 61 are attached in the reverse order of the above. It should be noted that when the work transfer tool 61 is taken out from the mounting portion 63, even if there is a slight displacement, the shaft 72 of the swing support portion 64 and the spring 71 swing and the error is corrected to correct the disc 73. The work transfer tool 61 can be taken out from above.

In this way, the dies 19, 21 and the work transfer tool 61 are automatically replaced.

The taken-out molds 19 and 21 and the work transfer tool 61 are integrally stored. At this time, since the work transfer tool 61 is completely stored in the depressed portion 62 of the upper mold 21, the molds 19 and 21 can be stacked, and the molds 19 and 2 can be stacked.
Since the storage form in which 1 and the work transfer tool 61 are integrated is small, a large storage space is unnecessary.

Since the crossbar 29 does not need to be replaced, one set is sufficient.

FIG. 7 shows another embodiment of the present invention, in which the work transfer tool holding portion 74 'is moved up and down to raise and lower the placing portion 63, the swing support portion 64 and the base plate 65 of the first embodiment. The work transfer tool 61 comprises a mechanical part 75, and the base plate 65 is moved up and down by the elevating mechanism part 75 to change the height position of the mounting part 63 according to the size of the work transfer tool 61. Irrespective of the size, the work transfer tools 61 are completely accommodated in the recesses 62 provided on the upper surface of the upper mold 21 so that they can be stacked.

The concrete elevating mechanism section 75 includes
2 is provided at the center of the bottom surface of the base plate 65 in the width direction, and the actuator 77 has the tip of the rod 76 fixed to the center of the bottom surface of the base plate 65; The shafts 7 to be mailed in shaft holes 78 formed at both ends of the base plate 65 in the width direction.
When the work transfer tool 61 is stored, the rod 76 of the actuator 77 is extended to raise the base plate 65 along the shaft 79, so that the mounting portion 63 is raised together with the swing support portion 64. , Work transfer tool 61
After the placement is completed, the rod 76 is contracted to lower the placement part 63 until the work transfer tool 61 is completely stored in the recess 62.

The rest of the configuration and operation are similar to those of the first embodiment and will not be described.

The work transfer tool changing device of the transfer press of the present invention is not limited to the above-mentioned embodiment, but may be applied to a feed bar type, and a detachable member as a positioning tool. The shaft and the mounting portion may be provided with a shaft hole, or other fitting or engaging concavo-convex portion or protruding portion may be provided, and other various changes are made without departing from the scope of the present invention. Of course you can get it.

[0067]

As described above, according to the work transfer tool changing device of the transfer press of the present invention, various excellent effects as described below can be obtained.

Since the work transfer tool can be attached to and detached from the crossbar, the required crossbar can be reduced to one set.

Since only the work transfer tool is stored integrally with the mold, the storage space can be reduced.

Since the work transfer tools are completely accommodated in the depressions of the molds, the molds can be stacked.

The mounting portion is between the base plate and the mounting portion.
In addition, loosely insert the pillar bolts with the retaining parts at the upper and lower ends.
On the outer periphery of the middle of the pillar bolt and on the base plate
And a spring that elastically supports the mounting part
The rocking support part that is fitted allows the mounting part to move up and down and
Since it can swing slightly horizontally , the swing support part is slightly horizontal to the mounting error of the attachment / detachment member equipped with the work transfer tool to the mounting part and the removal error from the mounting part. direction
Can be corrected autonomously by swinging to
In,置又mounting of trouble without work transfer tool even if there is a slight misalignment Ru can perform extraction. Moreover, the swing support
As the holding part moves up and down, the impact when the removable member is placed
To prevent damage to removable parts and noise.
Rukoto is Ru can.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a perspective view of a crossbar portion of FIG.

FIG. 3 is a partial cross-sectional view of a crossbar.

FIG. 4 is a view taken along the line IV-IV in FIG.

FIG. 5 is a perspective view showing a storage state of a mold and a work transfer tool according to an embodiment of the present invention.

FIG. 6 is an enlarged sectional view of an essential part showing a storage state of a work transfer tool.

FIG. 7 is an enlarged cross-sectional view of an essential part showing a storage state of a work transfer tool in a mold according to another embodiment of the present invention.

FIG. 8 is a perspective view of a conventional example.

[Explanation of symbols]

 16 Transfer Press 19 Lower Die 21 Upper Die 29 Crossbar 60 Shaft Hole (Positioning Tool) 61 Work Transfer Tool 62 Cavity 63 Placement 64 Swing Support 72 Shaft (Positioning Tool) 74, 74 'Work Transfer Tool Holding part 75 Elevating mechanism part a Line direction b Right angle direction

Claims (2)

[Scope of utility model registration request] 1. A crossbar extending in a direction perpendicular to the line direction is provided between a plurality of upper and lower molds arranged in parallel in the line direction so as to be capable of reciprocating in the line direction and vertically movable, and the work is conveyed to the crossbar. A detachable member equipped with a tool is detachably attached, a positioning hole is formed in the detachable member, and a recessed portion capable of completely accommodating the detachable member and the work transfer tool is formed on the upper surface of the mold, and the recessed portion is formed in the recessed portion. , Of the detachable member
A positioning shuff with a tapered upper end that fits into the positioning hole
DOO is coordinating the mounting portion for the protruding been workpiece transfer tool on its upper surface
And a base plate that is placed below the mounting part and is spaced apart.
A column with retaining parts at the upper and lower ends between the rate and the mounting part
While loosely inserting the bolt, also at the outer periphery of the middle part of the pillar bolt.
Elastically supports the mounting part between the base plate and the mounting part.
It is made by fitting a spring to
A work transfer tool exchanging device for a transfer press, which is provided with a swing support portion capable of swinging slightly horizontally . 2. A crossbar extending in a direction perpendicular to the line direction is provided between a plurality of upper and lower molds arranged in parallel in the line direction so as to be capable of reciprocating and elevating in the line direction, and the work is conveyed to the crossbar. A detachable member equipped with a tool is detachably attached, a positioning hole is formed in the detachable member, and a recessed portion capable of completely accommodating the detachable member and the work transfer tool is formed on the upper surface of the mold, and the recessed portion is formed in the recessed portion. , Of the detachable member
A positioning shuff with a tapered upper end that fits into the positioning hole
DOO is coordinating the mounting portion for the protruding been workpiece transfer tool on its upper surface
And a base plate that is placed below the mounting part and is spaced apart.
A column with retaining parts at the upper and lower ends between the rate and the mounting part
While loosely inserting the bolt, also at the outer periphery of the middle part of the pillar bolt.
Elastically supports the mounting part between the base plate and the mounting part.
It is made by fitting a spring to
Swing support part that can be supported to swing slightly horizontally
Provided, workpiece transfer tool changer of transfer press, characterized in that a lifting mechanism for lifting the placing part and the swinging support section at the bottom of the swing support portion.