JPH0368769B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a versatile press device that can be easily attached to both large and small press dies.

[Prior Art] A press machine that performs press forming such as punching, drawing, bending, etc. on a sheet metal member has a press die 2 for forming a product 1 and a press die 2, as shown in Fig. 3. It is composed of a press machine 3 to be operated.

The press mold 2 usually consists of a pair of upper mold 4 and lower mold 5 having molding parts 4a and 5a matching the shape of the product 1, and for the purpose of improving workability and operability, the upper mold 4 Various attached mechanisms are attached, such as a guide mechanism 6 for relative positioning of the mold and the lower mold 5, a scrap processing mechanism 7 for discharging scrap generated during molding, and a lift mechanism 8 for lifting the molded product 1 from the lower mold 5. There is. The press machine 3 also includes a ram 1 that holds an upper mold 5 on a frame 9.
A bolster 11 is provided to support the ram 10 and the lower mold 5, and an appropriate drive means (not shown) for vertically moving the ram 10 is built into the frame 9.

When molding the product 1, the worker manually supplies the material onto the lower mold 5 and positions it, then lowers the upper mold 4 and molds the product 1 between it and the lower mold 5. The generated scrap is discharged from the press by the scrap processing mechanism 7, and after the upper die 4 is raised, the product 1 is taken out from the lower die 5 by the lift mechanism 8 and discharged from the press.

By the way, the above-mentioned press device uses an upper mold 4 and a lower mold 5 that match the shape of the product 1 to be molded, and when the shape of the product 1 changes, the upper mold 4 and the lower mold 5 change accordingly. The shape of the press mold 2 had to be changed, and the entire press die 2 had to be replaced each time. When replacing the mold, the press mold 2 is integrally equipped with special attachment mechanisms 6, 7, and 8 that match the upper mold 4 and the lower mold 5, so the upper mold 4 and the lower mold 5 can be exchanged. Not only that, but the other attached mechanisms 6, 7, and 8 had to be replaced at the same time, resulting in high equipment costs associated with mold replacement.

Therefore, in order to make the press die 2 less expensive by separating the attached mechanisms 6, 7, and 8 attached to the press die 2, and to make the attached mechanisms common, for example, the scrap processing mechanism 7 was replaced with the press die. Separated from the mold 2, as shown in FIG. 4, a raised base 12 is provided between the lower mold 5 of the press mold 2 and the bolster 11 of the press machine 3, and scrap is placed on the front and rear of the upper surface of the raised base 12. Chute 1 for discharging to the outside of the press equipment
It is thought that it was said to form 3,13.

[Problems to be Solved by the Invention] By providing the reclamation platform 12 with a scrap processing function as described above, the scrap processing mechanism 7 can be removed from the press mold 2, and the press mold 2 can be made smaller and cheaper. , Moreover, when replacing the mold, there is no need to raise the height 1.
2 can be shared, equipment costs can be reduced.

However, with the above configuration, the reinforcement base 12 is formed to a constant size to match the bolster 11 or the press mold 2, and naturally the size and angle of the chute 13, 13 formed on the reinforcement base 12 are also constant. It's getting bigger. Therefore, there is no problem if the size of the press mold 2 to be replaced is the same, but if the size of the press mold 2 to be replaced changes, for example, the size may be changed to match the large press mold 2. If the press mold 2 is replaced with a smaller press mold 2 while using the reinforcement base 12, the scrap generated during molding will be removed from the chute 1.
3 and 13, there was a problem that it was not discharged and remained on the elevated platform 12. On the other hand, if the support base 12 is used for a small-sized press die 2, there is a problem in that the support of the press die 2 becomes unstable when the press die 2 is replaced with a large-sized press die 2. Furthermore, if the chute 13, 13 of the reinforcement base 12 is formed long enough to cover from a large press mold to a small press mold, the slope of the chute 13, 13 becomes gentle, and the problem arises that the scrap does not flow smoothly. It was hot.

Further, a clamper (not shown) is usually used to fix the lower mold 5 of the press mold 2 to the reinforcement base 12.
This clamper straddles and locks the locking grooves formed in the lower mold 5 and the reinforcement base 12 to fix both.
Therefore, there was a problem in that a long locking groove had to be formed in the reinforcement base 12 so that the clamp could be moved according to the size of the press die 2.

[Means for Solving the Problems] The present invention comprises a fixed base, a pair of movable bases each having a scrap discharge chute formed at an outer end thereof and slidably placed on the fixed base; A reinforcing platform provided on a fixed platform and comprising a telescoping means for moving the pair of movable platforms toward or away from each other is disposed between a lower mold of the press mold and a press machine that holds the lower mold, and The fixed table is connected to the press machine directly or through a bolster, and the movable table is connected to the lower die.

The press device with the above configuration can change the supporting range of the lower die by moving the pair of movable tables forming the scrap discharge chute toward or away from each other using an extendable means, and also change the arrangement of the scrap discharge chute. Even if the size of the press die changes, the lower die of the press die can always be well supported, and the scrap discharge chute can be provided at an optimal position on the lower die.

[Embodiment] FIG. 1 is a drawing showing an embodiment of the present invention. In the figure, 20 is a press mold for molding the product 1, and has an upper mold 21 and a lower mold 22. There is. 23 is a press machine that holds and operates the press die 20, and a ram 25 that holds the upper die 21 of the press die 20 is provided on the upper side of the frame 24 so as to be movable up and down.
A bolster 26 for supporting the lower mold 22 is provided on the lower side. Reference numeral 27 denotes an elevated platform provided between the lower die 22 of the press die 20 and the bolster 26, which includes a fixed platform 28, a pair of movable platforms 29, 30, and an expanding/contracting means 37 for moving the movable platforms 29, 30 closer to or away from each other. It is made up of

The fixing base 28 is formed to have approximately the same width as the bolster 26, has relief grooves 43, 43 formed at the front and rear ends, and is fixed to the upper surface of the bolster 26. Further, as shown in FIG. 2, the pair of movable tables 29 and 30 are formed in the same symmetrical shape,
a, 30a are vertical planes, and the rear upper surface of one movable base 29 is tapered downward toward the rear to form a scrap discharge chute 31, while the front upper surface of the other movable base 30 is tapered downward. A scrap discharge chute 32 is formed with a downwardly sloped taper. Furthermore, a female protrusion 33 is integrally provided at the center of the opposing surface 29a of one movable base 29, and a male protrusion 34 that fits into the female protrusion 33 is provided at the center of the opposing surface 30a of the other movable base 30. are integrally protruded. The movable bases 29, 30 are mounted on the fixed base 28 so as to be slidable in the front and back direction with the female projections 33 and male projections 34 fitted together. Reference numerals 35 and 35 denote inverted T-shaped locking grooves formed at two upper ends of the chute 31 of one movable base 29, into which clampers for fixing the lower mold 22 are mounted.
Reference numerals 36 and 36 designate inverted T-shaped locking grooves formed at two upper ends of the chute 32 of the other movable base 29, into which clampers for fixing the lower mold 22 are also mounted.

The expansion/contraction means 37 includes, for example, opposing surfaces 29 of movable bases 29 and 30 that face each other at both ends of a compound screw shaft 40 having a right-handed screw 38 and a left-handed screw 39 on both sides.
a, 30a, and a power transmission mechanism 41 is provided in the middle part of the compound screw shaft 40, and this power transmission mechanism 4
1 is connected to the output shaft of a drive forward/reverse rotation motor 42 installed on a fixed base 28. Note that this expansion/contraction means 37 is provided on the opposing surfaces 29a, 30 of the movable bases 29, 30.
The movable bases 29 and 30 are provided at two locations on both sides between a and a so that the movable bases 29 and 30 can move in parallel.

The above-mentioned press device places the reinforcement base 27 on the bolster 26, fixes the fixed base 28 on the bolster 26,
The upper mold 21 of the press mold 20 is attached to the ram 25, and the lower mold 22 is placed on a pair of movable stands 29, 30, and the locking grooves 35, 35, 3 formed in each of them are
6 and 36, the lower die 22 and movable bases 29 and 30 are connected by a clamper. If the mounting position of the lower mold 22 does not match the mounting position of the movable bases 29 and 30, the forward/reverse rotation motor 42 of the expansion/contraction means 37 provided on the reinforcement base 27 is rotated forward or reverse, and the power transmission mechanism 41 The double screw shaft 40 is rotated forward or reverse through
2 and the movable bases 29 and 30 are aligned and fixed with a clamper.

As described above, when the installation of the press mold 20 is completed, the material is supplied onto the lower mold 22 of the press mold 20, the upper mold 21 is lowered, and the product 1 is placed between the upper mold 21 and the lower mold 22. Shape. The molded product 1 is carried out from the press mold 20 after the upper mold 21 is raised. The scraps generated during molding are removed from the movable tables 29 and 30.
It is guided through chute 31, 32 formed in the chutes 31 and 32 and discharged out of the press apparatus.

Press mold 20 due to change in shape of product 1
When replacing the old press die 20, replace the old press die 20 with the ram 2.
5 and the movable tables 29 and 30, and carry the new press die 20 into the press machine 23, attach the upper die 21 to the ram 25, and move the lower die 22 to the elevated platform 27.
What is necessary is to fix it on the movable tables 29 and 30 of. In this case, when the new press mold 20 becomes large, the expansion/contraction means 37 is operated to separate the movable bases 29, 30, and conversely, when the new press mold 20 becomes small, the movable bases 29, 3
The positions of the lower die 22 and the movable bases 29 and 30 are adjusted by bringing them closer together.

When the small press mold 20 is used with the movable bases 29 and 30 close together, the scrap generated during molding of the product 1 is transferred from the chute 31 and 32 formed on the movable bases 29 and 30 to the fixed base 28. It is discharged to the outside of the press device through the escape grooves 43, 43.

In addition, in the above embodiment, the embankment 27 is connected to the press machine 2.
Although it is provided on the bolster 26 of No. 3, the bolster 26 may be removed and provided directly on the press machine 23.

[Effects of the Invention] According to the present invention, the movable base of the elevated platform provided directly or via a bolster between the lower die of the press mold and the press machine can be moved toward or away from each other by the telescoping means. Therefore, when replacing the press die, by moving the movable table closer or further away,
The support part can be adjusted to the optimum position according to the size of the lower die, and can be attached to everything from small press dies to large press dies, and can stably support press dies.

In addition, since the scrap discharge chute is formed on the movable table, the positional relationship and inclination angle of the scrap discharge chute with respect to the press mold are always constant, regardless of the size of the press mold, by moving the movable table. Therefore, the scrap discharged from the press mold can be reliably discharged to the outside of the press apparatus.

In addition, the scrap processing mechanism and other parts of the press mold can be separated from the lower mold, and the lower mold only needs to be the molding part, reducing mold production costs associated with mold replacement.

[Brief explanation of drawings]

FIG. 1 is a front view of a press device according to the present invention;
Fig. 2 is an enlarged perspective view showing an example of a reclamation platform, Fig. 3 is a sectional view showing a conventional general press device, and Fig. 4 is a sectional view showing an example of a conventional press device.
The figure is a cross-sectional view of a press device using an elevated platform, which is the premise of the present invention. 20...Press mold, 21...Upper mold, 22...
Lower die, 23...press machine, 26...bolster,
27... Reinforcement platform, 28... Fixed platform, 29, 30...
...Movable stand, 37...Expansion means.

Claims (1)

[Claims] 1. A fixed base, a pair of movable bases each having a scrap discharge chute formed at its outer end and slidably placed on the fixed base; A reinforcing platform consisting of an extensible means for moving toward or away from each other is arranged between the lower die of the press mold and a press machine that holds the lower die, and the fixing platform is connected to the press machine directly or via a bolster. and the movable base is coupled to the lower mold.