JPH0246943A - Forming tool attaching/detaching device for former - Google Patents

Abstract

PURPOSE:To reduce the cost of the title device by providing a tool supporting table for supporting a die or a punch in the horizontal direction to be moved, and also, providing a lateral body which can be brought to reciprocating motion on its upper part, and moreover, providing punch and die detaining claws on the lateral body. CONSTITUTION:A tool carrying mobile body 1 which can move not only in the die parallel direction of a former but also in the vertical direction is provided, and also, a tool supporting table 10, a lifting driving means 11 and a lateral body 12 which can be brought to reciprocating motion are provided on the mobile body 1. Also, in the lateral body 12, a die detaining claw 14 is provided on a die supporting block 4 side, and a punch detaining claw 15 is mounted on a punch supporting block 5 side. At the time of replacing the die 4, the mobile body 1 is allowed to lower, and positioning fitting parts 7, 24 are fitted. In such a manner, the mobile body 1 is positioned exactly in a die supporting block 2 in all the directions. Accordingly, reaction force and drawing force at the time of drawing become small. Since the device is miniaturized, the cost of the device is reduced.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention provides a method for automatically changing the die and punch for setup change in a multi-stage homer that pressure-forms a material using a die and a punch that face each other. This invention relates to a molding tool attachment/detachment device for attachment/detachment to a molding tool.

(Prior art) A molding tool (die or punch) attachment/detachment device used in a conventional homer attaches the die or punch to a tool conveyance moving body for conveying the tool between the tool holder and the homer. A tool gripper for holding the front end of the tool gripper, and a drive means for pulling out or pushing the tool gripper in the direction of the tool axis.

(Problems to be Solved by the Invention) In the conventional tool attachment/detachment device as described above, a severe pulling reaction occurs when pulling out a forming tool (die or punch) that is in close contact with a tool support block due to thermal strain. The force must be received by the tool transporting moving body, and the tool gripping tool must be accurately moved by the tool transporting moving body so that the center and moving direction of the tool holding tool coincide with the axis of the die or punch. As a result, not only the tool transporting movable body and the guide mechanism movably supporting it become large and heavy objects, but also the tool transporting movable body, which is large and heavy, becomes large and heavy. Since a control mechanism capable of highly accurate control was also required, the entire device had the disadvantage of being extremely expensive.

(Means for solving the problem!) In order to solve the conventional problems as described above, the present invention has the following features:
A tool support for movably supporting a die or a punch in a horizontal and lateral direction on a tool transporting moving body, an elevation drive means for switching the tool support between a goo support level and a punch support level, A lateral moving body capable of reciprocating in the tool movement direction above is provided, and a driving means for reciprocating the lateral moving body, and the lateral moving body has a drive means that is fitted from above into an engaged groove of the die at one end side in the moving direction. At the same time, a punch locking claw is provided on the other end side to fit into the engaged groove of the punch from above. Positioning surfaces that face each other vertically and positioning fitting parts that fit vertically to each other are provided, and positioning surfaces that face each other front and back are provided on the front side portions of the tool conveying moving body and the goo supporting block. This paper proposes a Homer molding tool attachment/detachment device.

(Function of the invention) When removing the forming tool of the homer, the level of the tool support is changed depending on whether the tool to be worked is a goo or a punch, and the horizontal moving body is moved to the goo side or the punch side. Wait at the stroke limit position. In such a state, the tool transporting moving body is lowered from directly above the tool changing work position, and the positioning surfaces between the tool transporting moving body and the goo support block that are in vertical contact with each other and the positioning surfaces that are in contact with each other in the front and back are By bringing these into contact with each other and simultaneously fitting the positioning fitting parts that fit vertically into each other,
The tool transport moving body is accurately positioned in all of the left and right horizontal directions (die parallel direction), front and rear horizontal direction (goo axis direction), and up and down directions with respect to the goo support block at the tool exchange position. It is also reliably prevented that the tool movement axis on the tool support stand is tilted in plan view or side view with respect to the die axis of the gooey support block and the punch axis of the punch support block.

Due to the positioning of the tool transporting moving body, the horizontal movement base at the standby position, which is lowered together with the tool transporting moving body, is moved into the front end engaged groove of the die in which the die locking pawl is supported by the goo support block. or the punch locking pawl is fitted from above into the front end engaged groove of the punch supported by the punch support block, so move the horizontal movement table in the tool withdrawal direction. This allows the goug or punch to be pulled out from the respective support block onto the tool support. At this time, the direction in which the tool is pulled out by the transverse motion table is completely aligned with the axial direction of the tool to be pulled out, so that the tool is pulled out smoothly. In addition, the tool pulling reaction force acting on the tool transporting moving body is received by the Goo support block at least through the vertically fitting fitting portions, and is applied to the tool transporting moving body as a bending force. It also does not act on the guide mechanism of this tool transporting movable body.

The goo or punch can be set in the homer's goo support block or punch support block by an operation opposite to the action of pulling out the goo or punch described above, but of course in this case, the goo or punch is pushed into the support block by the horizontal movement table. Since the axis of the tool is completely aligned with the axis of the support block, the tool can be pushed into the support block smoothly. In addition, the tool pushing reaction force acting on the tool transporting moving body is received by the Goo support block through at least the above-mentioned upper and lower fitting parts, and is applied to the tool transporting moving body as a bending force. It also does not act on the guide mechanism of this tool transporting movable body.

(Effects of the Invention) As described above, according to the homer tool attachment/detachment device of the present invention, the pull-out reaction force and push-in reaction force of the tool can be stopped by the die support block, and the tool transporting moving body The position and direction of the moving body for tool transport can be determined accurately by the contact and fitting between the handle and the gouging support block, so that the tool can be pulled out and pushed in smoothly. The movable body and its guide mechanism can be made lightweight and compact, and their control can be simplified, resulting in a significant reduction in overall cost.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a tool conveyance moving body, which, as is conventionally known, can move laterally in the die parallel direction (X direction) in the homer and in the vertical direction (X direction). The tool can be raised and lowered, and furthermore, tools can be transported between the homer and a tool holder installed at a location away from the homer.

In the homer, a gooey support block 2 and a punch support block 3 are arranged so that the die 4 and the punch 5 supported by each are concentrically opposed to each other, and the punch support block 3 supports the die 4 and the punch 5. The ram reciprocates in the direction of a common central axis mYL. Reference numeral 6 denotes a die fixing bolt, which is loosened in advance when the die 4 is attached or detached.

Although not shown in the figure, a similar punch fixing bolt is also provided on the punch S side. The die 4 and punch 5
has a circumferential engaged groove 4a at its opposing front end;
5a, and the upper front surfaces of the support blocks 2 and 3 are cut out so that the upper portions of these engaged grooves 4a and 5a are exposed from the support blocks 2.3. Further, the upper positioning surface 2a of the goo support block 2 is provided with a positioning fitting part 7 in the shape of a vertical pin, and the front positioning surface 2b is further provided on the front lower side of the goo support block 2.
The pair of left and right L-shaped receivers are provided with claws 9a and 9b so as to form a fitting recess 8 between them.

The tool transporting body 1 includes a tool support stand 1G that supports a tool movably in the axial direction thereof, and this tool support stand 10.
a lifting drive means 11 for raising and lowering the tool within a certain range; a lateral moving body 12 capable of moving forward and backward in the tool movement direction above the tool support 10; and a driving means 13 for reciprocating the lateral moving body 12.
The lateral moving body 12 has an arcuate die locking pawl 14 projecting downward at one end on the die support block 4 side, and an arcuate die locking pawl 14 at the other end on the punch support block 5 side. A punch locking claw 15 is provided to protrude downward.

The tool support stand 10 has a V-shaped tool support surface 10a that supports a tool (die 4 or punch 5) in a self-centering manner, and is a base that is cantilevered from the tool conveyance moving body 1. Part 1a
It is supported so as to be movable up and down via a pair of elevating guide lofts 16 above. The elevating drive means 11 includes the base portion 1
Consisting of a cylinder unit 17 fixed to a,
The piston rod 17a moves the tool support stand 10 to the lower limit position where it abuts on the base portion 1a, that is, the guide support level L1 shown in FIGS. 1 and 2, and the lower end stopper 162 of the elevation guide rod 16 is It can be raised and lowered between the upper limit position where it abuts the lower end of the slide guide 18 on the platform 1a side, that is, the punch support level L2 shown in FIG. 4. By changing the level of the tool support 10, the large-diameter die 4 and the small-diameter punch 5 can be aligned at a constant center axis Y.
It can be supported concentrically with 2.

The driving means 13 includes a screw shaft 19 supported above the tool support stand 10 in parallel with the central axis Y2, and a screw shaft 19 which is rotated in any direction in the forward or reverse direction via a torque limiter 20 and a chino 21. The transverse moving body 12 is screwed onto the screw shaft 19 and is attached to a guide rail portion 23 provided on the tool conveying movable body 1 parallel to the center axis Y2. movably supported.

The tool transporting moving body 1 is provided with an extending portion 1b extending above the goo support block 2, and a positioning surface 2a of the die supporting block 2 is provided on the lower side of the tip of the extending portion 1a.
A positioning surface IC vertically opposed to the positioning surface IC, and a positioning fitting part 24 made of a pin protruding downward so as to fit into the positioning fitting part 7 are provided. Of course,
The positioning fitting part 7 on the Gooey support block 2 side may be configured as a bottle projecting upward, and the positioning fitting part 24 on the tool transporting movable body 1 side may be configured in the shape of a pin. Furthermore, a member 25 forming a positioning surface 1d that faces the positioning surface 2b of the gooey support block 2 in the front and rear directions is attached to the base portion 1a, and the member 25 is fitted into the fitting recess 8 from above. A pair of left and right fitting claws 26a, 26b are provided to protrude downward.

To explain how to use it, when replacing the die 4 supported by the Goo support block 2, please refer to Figs. 1 and 2.
As shown in the figure, the positioning fitting part 7 on the die support block 2 side and the positioning fitting part of one example of the tool transporting body are located above the intermediate position between the die 4 to be replaced and the bunch 5 opposing it. The tool transporting movable body 1 is stopped at a position where the tool transporting member 24 faces each other concentrically. On the other hand, the tool support stand 10 is switched to the die support level L1, and the lateral moving body 12 is kept on standby at the stroke limit position on the side of the die support block 2. At this time, the die locking pawl 14 of the lateral moving body 12 is positioned directly above the engaged groove 4a of the die 4 supported by the goo support block 2.

In this state, the tool transporting movable body 1 is lowered, and as shown in FIG. The positioning surfaces 2b1d are made to face each other back and forth. As a result, the fitting claws 26a, 26 are attached to the fitting recess 8.
b will also fit. As a result, the tool transporting movable body 1 can move the guide support block 2 in all three-dimensional directions.
The center axes Y1 of the die 4 and the punch 5 shown in FIG. 1 and the center axis Y2 on the tool support 10 are not inclined to each other and completely coincide with each other. At the same time, the die locking pawl 14 of the transverse moving body 12 fits into the engaged groove 4a of the die 4 exposed from the goo support block 2 from above.

Note that the fitting between the fitting recess 8 and the fitting claws 26a and 26b does not contribute to the above positioning action.

Once the tool conveying movable body 1 has been positioned as described above, when the motor 22 of the drive means 13 drives the screw shaft 19 in the forward rotation to move the transverse movable body 12 laterally in the direction of pulling out the forceps, this transverse movable body 12 also moves. Since the die 4 in the die support block 2 is pulled out along the center axis Yl by the die locking pawl 14, the third
The user moves onto the tool support stand 10 as shown by the imaginary line in the figure.

When the pull-out reaction force acting on the tool transporting movable body 1 via the screw shaft 19 during this die withdrawal, that is, the pull-out load of the die 4 is large, the tool transporting movable body 1 is pressed against the guide support block 2. The reaction force is caused by the positioning fitting portions 7.24 that fit into each other approximately on the extension axis of the screw shaft 19.
The receiver is fixed to the gooey support block 2 via. Furthermore, since the die locking pawl 14 is located below the level of the positioning fitting block 7.24, when the die pulling load is large, the positioning fitting block 7.
．． 24 as a fulcrum, the rotational reaction force generated in the tool transporting movable body 1, that is, the reaction force that attempts to rotate the tool support stand 1o upward in a direction away from the goo support block 2, is generated by the fitting claws 26a, 26b. At the fitting portion with the fitting recess 8, the L-shaped receiver is fixed to the gouer support block 2 via claws 9a and 9b.

Once the die 4 has been transferred onto the tool support stand 10, the lateral movement of the lateral movement body 12 is stopped, and the tool conveyance movement body 1 is once raised vertically to release the positioning between it and the gooey support block 2. , the tool support stand 1 is moved by the tool transport moving body 1.
0 can be transported to a predetermined location.

The newly set die 4 is, for example, a gui support block 2.
The die 4 is transferred from the tool holder or the like onto the tool support 10 by the same operation as pulling it out onto the tool support 10. After that, the tool transporting moving body 1 is moved and positioned relative to the die support block 2 to be replaced in exactly the same manner as in the above-mentioned gouging work, and the screw shaft 19 is driven in the reverse direction to pull the horizontal moving body 12. Move laterally in the pushing direction. As a result, the die 4 on the tool support stand 10 is pushed toward the gouer support block 2 by the gooey locking pawl 14 of the lateral moving body 12, and is pushed into the die support block 2. At this time too,
・The central axis of the die 4 moving on the tool support stand 10 (the first
Since Y2) in the figure and the central axis of the goo support block 2 (Yl in FIG. 1) completely match, the die 4 is smoothly pushed into the goo support block 2. Also, when the pushing reaction force at this time, that is, the pushing load is large, the screw shaft 19
The reaction force that tries to move the tool transport moving body 1 away from the die support block 2 through the positioning fitting blocks 7 and 24 that fit into each other vertically is applied to the die support block. Uke is stopped at 2. Furthermore, the fitting between the fitting recess 8 and the fitting claws 26a and 26b also helps in transmitting the gouging reaction force to the gouging support block 2.

When removing the punch 5 from the punch support block 3,
As shown in FIG. 4, the tool support base 10 is switched to the punch support level L2, and the horizontal moving body 12 is moved so that the punch locking claw 15 is located directly above the engaged groove 5a of the punch 5. After waiting at the stroke limit position on the side of the support block 3 and positioning the tool conveying moving body 1 in the same manner as in the goo pulling operation, the transverse moving body 12 may be moved by the screw shaft 19 in the punch pulling direction. Also, when newly setting the punch 5 on the punch support block 3, the procedure for pulling out the punch can be reversed.

During this punch replacement work, the punch 5 is pulled out and pushed in smoothly for the same reason as when pulling out the punch and pushing it in. Also, the reaction force for pulling out the punch acts in the same way as the reaction force for pushing in the punch, and the punch 5 is pulled out and pushed in smoothly. The receiver is stopped at the goo support block 2, and the punch pushing reaction force acts in the same manner as the goo pulling reaction force, and the receiver is stopped at the goo support block 2.

In addition, as shown in FIG. 5, the positioning surface 1d of one example of the tool transporting movable body, which faces the positioning surface 2b of the goo support block 2 in the front and back, is formed from the tool transporting movable body 1 instead of the member 25. A pair of vertically long members 27a and 27b, which are connected to each other on the left and right.
It can also be configured by the surface on the gou support block 2 side. In this case, the lower ends of the longitudinal members 27a, 27b become the fitting claws 26a, 26b, but the fitting claws 26
In order to form the four fitting parts 8 into which the parts a and 26b are fitted, one horizontally elongated receiver is provided with a claw 28, and the pair of left and right L-shaped receivers are provided on the lower front side of the gou support block 2 in place of the claws 9a and 9b. It can also be installed. Furthermore, the base part 1a can be supported by the tool transporting movable body 1 on both sides via both side walls located on both the left and right sides of the tool support stand 10, but in this case, the said both side walls It is also possible to use the vertically long end surface on the side of the die support block 2 as the positioning surface 1d. In any case, the fitting recess 8 and the fitting claws 26a, 26b
is not essential to the present invention.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal side view, Fig. 2 is a longitudinal front view thereof, Fig. 3 is a partially longitudinal side view illustrating the action of pulling out the punch, Fig. 4 is a partially longitudinal side view illustrating the action of pulling out the punch; 5
The figure is a longitudinal sectional front view showing a modification. 1... Tool transporting body, 1a... Base part, lc. 1d...Positioning surface, 2...Gui support block, 2
a, 2b...Positioning surface, 3...Punch support block, 4...Gui, 4a, 5a...Engaged groove, 5...
・Punch, 7.24...Fitting part for positioning, 8...
Fitting recesses, 9a, 9b, 28...L-shaped receivers are claws, 10
... Tool support stand, 11... Lifting drive means, 12...
- Lateral moving body, 13... Lateral moving body driving means, 14... Die retaining claw, 15... Punch retaining claw, 16... Lifting guide rod, 17... Cylinder unit, 19...
Screw shaft, 22...Motor 23...Guide rail part,
26a, 26b... Fitting claw patent applicant: Joto Kikai Kogyo Co., Ltd.

Claims (1)

[Claims] A tool support for movably supporting a die or a punch in a horizontal and lateral direction on a tool transporting moving body, an elevation drive means for switching the tool support between a die support level and a punch support level, and a tool support for the tool support. A lateral moving body capable of reciprocating in the tool movement direction above is provided, and a driving means for reciprocating the lateral moving body, and the lateral moving body has a drive means that is fitted from above into an engaged groove of the die at one end side in the moving direction. A die locking claw is provided on the other end side of the punch, and a punch locking claw is provided on the other end side to fit into the engaged groove of the punch from above. Positioning surfaces that face each other vertically and positioning fitting parts that fit vertically to each other are provided, and positioning surfaces that face each other front and back are provided on the front side of the tool conveying moving body and the die support block. Homer molding tool attachment/detachment device.