JPS6330096B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is applied to a multi-stage former for forging metal products such as screws such as bolts and nuts or various parts using punches and dies. Punches required for heading in order to set up dies and punches. This invention relates to a device that allows the punch case and die block to be replaced while the die is set.

Technical Background of the Invention Such a continuous multi-stage homer usually has 4 to 5
The punches and dies (molds) of the stages are assembled in a row horizontally in a punch case and die block so that they face each other, and the striking action is continuously repeated tens of thousands of times a day as the ram moves back and forth. Therefore, the damage and wear and tear are extremely severe, and as a result, the molds are regularly damaged or damaged. Requires replacement every time it wears out. Furthermore, when the type or size of the forged product is changed, it must be converted to a corresponding mold. However, such a mold is a punch case,
It is built into the die block and fixed firmly, and since the opposing parts must be aligned and assembled with high precision without any deviation, a great deal of effort and time is required to replace and adjust them. year,
During this time, production is stopped, which poses a serious problem for consistent assembly line operations. Moreover, especially in the case of large-sized formers, the molds required for them are large and heavy, making it difficult to even easily carry them by hand, which is a major obstacle in improving work efficiency.

Prior Art Before this application, the applicant had filed an application (Utility Application No. 58-190829) for such a mold changing device, in which the mold changing work was performed using a robot device.
No.) has been done. With this robotic device,
Molds can be carried, removed, and inserted using power, but the basic problems of requiring a special mechanism that allows one-touch operation and having to stop the machine for long periods of time remain unsolved. It is.

OBJECT OF THE INVENTION It is an object of the present invention to transport a plurality of punches and dies mounted in a row horizontally onto a set-up jig using a mold transfer tray, insert them into a punch case and a die block during external setup, and then insert the punches and dies into a punch case and a die block. Punch for large homers by allowing each die block to be incorporated into the main body of the homer. The object of the present invention is to provide a mold changing device for a multi-stage former that can facilitate die replacement and greatly shorten the time required for replacement.Another purpose is to provide a mold changing device for a multi-stage former that can facilitate die replacement and greatly shorten the time required for replacement. To provide a device whose position can be moved forward and backward to easily and accurately align a punch and a die, and which can be transported and assembled into a forming body as is.

Furthermore, another purpose is multiple punches. It is an object of the present invention to provide this kind of changing device which allows dies to be easily transported, inserted into a die block or punch case, and received in a state in which dies are arranged in a regular manner using a mold transport tray.

Configuration In order to achieve the above object, the present invention provides an exchanging device equipped with a setup jig for exchanging molds in a multi-stage former, in which a die block is placed upward on the upper surface of a bed 1 having a horizontal or nearly horizontal plane. A die block mounting base 2 having a die block fixing portion 6 that can be freely inserted and removed; and a punch case 7 that can move forward and backward relative to the die block mounting base 2 and can be mounted on the opposing surface so as to be able to be pulled out upwards. A punch case mount 3 equipped with a punch case fixing part 8, and a punch case mount 2, 3 located between the die block mount 2 and the punch case mount 3.
Positioning guide 11 that defines the mounting position for
A mold mounting part 1 is provided with a mold transport tray 10 that is detachably fitted on the mold transport tray 10, and a die or a punch can be slid on the upper surface of the mold transport tray 10 only in the axial direction.
4 and 15 are provided.

The mold transport tray is provided with a hook for hanging from a crane or the like, and the mold transport tray is divided into a die insertion part and a punch insertion part, which are separated into front and rear parts or formed integrally. .

Example 1 to 3 show an apparatus according to the invention.

In the figure, 1 is a bed with a flat upper surface that constitutes the setup jig body;
On the upper surface of this bed 1, a die block mount 2 is provided on one side, and a punch case mount 3 is provided on the other side facing this.

The die block mount 2 is fixed at a fixed position with respect to the bed 1, but the punch case mount 3 is movable longitudinally on the bed 1 along a guide rail 4.

As shown in FIG. 2, the die block mounting base 2 is formed into a U-shape when viewed from above, so that the die block 5 can be freely inserted into and removed from above. This U-shaped portion serves as a die block fixing portion 6.

The punch case mounting base 3 is provided with a punch case fixing portion 8 on the opposing surface to which the punch case 7 can be attached so as to be removable upward. The fixing section 8 is formed in the shape of a surface plate having a vertical surface 8a, with a supporting body 8b protruding from the lower part of the vertical surface, and a setting metal fitting 9 that can be hung and set freely at the upper end.

The mold transfer tray 10 fitted on the bed 1 between the two mounting stands 2 and 3 has two parallel guides 11.
It is placed so as to be fitted onto the top, and the position is automatically determined when it is fitted into the fixed position.
A fitting part 1 in which a die 12 and a punch 13 are fitted on the upper surface of the mold conveying tray 10 so as to be slidable in the axial direction.
4,15 are provided. The fitting portions 14 and 15 are composed of two parallel supporting members 14a and 15a, and a die is placed on the supporting members 14a and 15a. When the bunch is mounted, the outer circumferential surface of each cylinder is fitted with two-point support as shown in FIG. 5, and the supporting portions are in line contact, making it easy to slide in the axial direction.

As shown in FIG. Each fitting part 14 of the die,
15 into front and rear parts, or divide tray 10 itself into two parts, front and rear, and use one part 10' for die 12 and the other part 10" for punch 13, as shown in FIG. You can also do it.

This mold transfer tray 10 is equipped with hanging hooks 1 so that it can be lifted and moved by a crane.
6 is installed.

The punch case mounting base 3 can be moved manually or by operating a handle, but if it is extremely large and heavy, it is difficult to move it, so a power pushing device 17 is used. As shown in FIG. 4, this device 17 moves the punch case mount 3 forward and backward with respect to the die block mount 2 by extending and contracting the piston rod 17b by hydraulic pressure using a hydraulic cylinder 17a.

Effect The mold replacement work is performed in the following steps.

First, the die block 5 is hung onto the bed 1 of the setup jig main body using a crane using the hook 20 provided at the top, and set on the die block mounting base 2. After it is fixed, the wedge-shaped adjusting body 19 is moved back and forth by operating the adjusting handle 18 to fix it in a fixed position and make it immovable. Similarly punch case 7
is hung by a crane using a hook 21 provided on the upper part of the punch case and attached to the punch case mounting base 3. After it is fixed in position, it is locked with the setting metal fitting 9. The set fitting 9 includes a support rod 9b pivoted to a pivot shaft 9a so as to be able to rise and fall freely, and a fastening nut 9 screwed into the threaded portion of the support rod 9b.
c, and is engaged with the base plate 7a of the punch case 7 in a detachable manner.

Next, a plurality of dies 12 and punches 13 are placed on the mold conveying tray 10 in order of process. The empty transport tray 10 may first be hung by a crane using the hook 16 and placed on the bed 1, or dies and punches may be separately placed on the transport tray 10 and then lifted by a crane. You may bring it to bed 1. When the die 12 and the punch 13 are fitted into the fitting parts 14 and 15 of the transfer tray 10 on the bed 1, the tips of the die 12 and the punch 13 face the fitting holes 5a and 7b of the die block 5 and the punch case 7, respectively. Since it faces the die 12, push it towards the die block 5 side,
When the punches 13 are pushed toward the punch case 7 side, each punch slides on the rail and is inserted into the insertion hole. During this insertion, if the guide branch 22 protruding from the front end of the insertion hole guides the insertion, the insertion can be carried out smoothly.

When it is necessary to align the dies and punches inserted in the die block 5 and punch case 7, the transport tray 10 on the empty bed 1 is lifted up again by a crane and moved to another location, and then the punch case is attached. When moving platform 3 forward,
As shown in FIG. 4, the tip 13a of the punch 13 can fit into the mold hole 12a of the die 12, so that the centering adjustment of the die and punch can be checked even when the die and punch are set up externally. Since this punch case mounting base is slid by a power pushing device 17, the same simulation as actual heading in a former is seen.

All of this has been completed through external setup while the former was in operation, and we are now waiting for the forging work to be completed.

When the forging work in the former is completed, the die block 5' and the punch case 7' are attached to the body claim 23.
It is pulled out from the main body by a crane or the like through each insertion part 24, 25, and replaced with the die block 5 and punch case 7 that were previously on standby on the bed 1. Immediately after the replacement is completed in this way, the homer starts heading. resume.

Effects of the Invention As described above, the present invention provides mounting bases for the die block and punch case that are assembled in the former on the bed of the setup jig body, facing each other, and also attaches and detaches a mold transfer tray between the two mounting bases. The die is placed freely on the positioning guide and placed on the top of the transfer tray. A punch mounting part is provided, and the die and punch are slidably fitted onto the mounting part so as to match the die block on each mounting base and the insertion hole of the punch case, making it easy to replace the die and punch. The work is carried out for each die block and punch case, and centering can be done easily and reliably by external setup as a simulation of an actual forming machine. Therefore, the time loss can be minimized even when changing molds in an ultra-large forming machine. This series of mold replacement work can be carried out safely, smoothly and reliably by using a mold transfer tray, and can be carried out with a simple structure and at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of the mold changing device, FIG. 2 is a plan view thereof,
Fig. 3 is a front view seen from the punch side, Fig. 4 is a longitudinal side view with the mold transfer tray removed and centering is being performed, Fig. 5 is a cross-sectional view taken along line A-A in Fig. 1, 6
The figure is a side view showing an embodiment in which the mold transfer tray is divided into two parts, Figure 7 is a plan view of the multi-stage former, and Figure 8 is a plan view of the multi-stage former.
The figure is a perspective view of the entire configuration including a multi-stage former and the device of the present invention. 1...Bed, 2...Die block mounting base, 3...Punch case mounting base, 4...Guide rail, 5...Die block, 6...Die block fixing section, 7...Punch case, 8...Punch case fixing section, 10...Mold transfer tray , 11... positioning guide, 12... die, 1
3... Punch, 14, 15... Fitting part, 16... Hook, 17... Power pushing device.

Claims (1)

[Scope of Claims] 1. In an exchanging device equipped with a set-up jig for exchanging molds in a multi-stage former, a die block is freely inserted and removed from above on the upper surface of a bed 1 having a horizontal or nearly horizontal plane. a punch case fixing part 2 having a die block fixing part 6 which can be moved forward and backward relative to the die block fixing part 2; a punch case mounting base 3 having a punch case mounting base 8; A multi-stage mold transport tray 10 comprising a mold transport tray 10, and mold mounting portions 14 and 15 are provided on the upper surface of the mold transport tray 10 so that a die or a punch can be slid only in the axial direction. Mold changing device for home machine. 2. The mold changing device for a multi-stage former according to claim 1, wherein the mold transport tray is provided with a hook for hanging a crane or the like. 3. The mold changing device for a multi-stage former according to claim 1, wherein the mold conveyance tray is divided into a die fitting part and a punch fitting part, which are separated in the front and back or are formed integrally. 4. The mold changing device for a multi-stage former according to claim 1, wherein the mold fitting part has a structure in which the outer circumferential surface of the cylinder is supported between two points by two parallel supporting members. 5. The mold changing device for a multi-stage former according to claim 1, wherein the punch case mount is interlocked with a power pushing device.