JPS5840966Y2 - Mold mounting device for press brake - Google Patents

Description

[Detailed description of the invention] This invention relates to a mold mounting device for a press brake, and more specifically, a mold can be easily mounted and removed from a mold mounting base in an extremely short time. The present invention relates to a mold mounting device in a press brake configured to be able to operate.

Hereinafter, embodiments of this invention will be described in detail with reference to the drawings.

What is shown in FIG. 1 is a front view of the press brake according to this invention.

As shown in the figure, the press brake is equipped with a lower mold (mold) 3 at the upper end of a lower frame (base) 1, and an upper mold 7 which can be freely engaged with the lower mold 3 at the lower end of a ram 5. It is equipped.

The lower mold 3 is constructed as described below and is detachably attached to the lower frame 1.

In FIGS. 2 to 4, the lower mold 3 is provided independently from the lower frame 1, and an auxiliary base 9 is connected to the bottom of the lower mold 3 through fastening members ILII, such as bolts. It is installed.

Therefore, the lower mold 3 and the auxiliary base 9 have an integral structure.

The auxiliary base 9 is provided with an appropriate number of grooves (engaging portions) 13.13 perpendicular to the longitudinal direction of the auxiliary base 9, and the grooves 13.13 are provided in parallel at an appropriate distance from each other. be.

The shape of the groove 13.13 is such that the width on the side in contact with the lower mold 3 is wide.
The width of the side that engages with the lower frame 1, that is, the bottom side of the auxiliary base 9, is narrowed and formed into a so-called T-shape.

The T-shaped groove 13.13 provided in this auxiliary base 9 is
The auxiliary base 9 is penetrated by step portions 15 and 15, respectively.

Then, the lower mold 3 configured as described above is inserted into the grooves 13, 13.
The lower mold clamping device 17 of the lower frame 1 is detachably attached to the lower mold clamping device 17 via the lower mold clamping device 17 of the lower frame 1.

More specifically, the lower die 3 is configured to be freely engageable and detachable from the clamp member 19 of the lower die clamp device 1T mounted on the lower frame 1 via the groove 13.13.

More specifically, a support base 21 for supporting the lower mold 3 is attached to the upper surface of the lower frame 1 by a plurality of fastening members 23 such as bolts.
1, the clamp member 19 is finally attached.

That is, appropriate recesses 25° 2T are provided in the support base 21 and the lower frame 1, and the support base 29 of the clamp member 19 is mounted in the recesses 25 and 27, and the lower part of the clamp member 19 is screwed into the support base 29. 31, it is screwed through the screw hole 33.

Then, the threaded portions of the clamp member 19 and the support base 29 are connected to each other by a locking member 35 such as a split pin.

The upper surface of the support stand 29 is provided to be inclined, and the inclined surface 3
A wedge-shaped clamp actuating member 41 having an inclined surface 39 corresponding to the inclined surface 37' is movably mounted on 7.

The upper surface of the clamp actuating member 41 is engaged with a presser member 43 fixed to the support base 21 above the recess 25 .

That is, the clamp actuating member 41 is configured to be restricted from moving upward by the presser member 43.

Pistons 45 and 47 are disposed on both sides of the clamp member 41, and the pistons 45 and 47 are connected to the support base 21.
It is fitted into a hole 49°51 provided in the horizontal direction.

The holes 49 and 51 are each in communication with a fluid pressure mechanism such as a hydraulic pump (not shown), and by controllingly feeding fluid from the fluid pressure mechanism, clamp operation is performed via the piston 45 or the piston 4T. The structure is such that the member 41 can be moved appropriately.

Since the upper surface of the clamp operating member 41 is restricted by the holding member 43, when the clamp operating member 41 is moved by being pushed by the piston 54 or the piston 47, it lowers or raises the support base 29 via the inclined surface 39.37. .

In this embodiment, when the clamp actuating member 41 is moved to the right in the figure via the piston 45, the clamp member 19 is lowered via the support base 29, and the piston 4
When the clamp actuating member 41 is moved to the left in the figure via the support plate 7, the clamp member 19 is raised via the support base 29.

The pistons 45 and 47 are respectively attached via seal members 53 and 55 such as 01J rings.
On one end side of 5, that is, on the side communicating with the fluid pressure mechanism,
It is loaded with ammunition 57, such as a compression spring.

The ammunition device 57 is loaded with ammunition and is biased in a direction to lower the clamp member 19 via the piston 45 and the clamp actuating member 41.

A bullet 59 such as a compression spring is loaded between the head 19' of the clamp member 19 and the presser member 43, and normally biases the clamp member 19 upward. It is a provision.

In this embodiment, when fluid is pumped through the hole 51 and the clamp actuating member 41 is moved to the left in FIG.
It rises due to the elastic force of

In this state, the lower mold 3 is attached.

Then, the fluid that was being force-fed to the hole 51 is returned to the fluid tank or the like, and the fluid is force-fed to the other hole 47 to lower the clamp member 19 via the piston 45 and the clamp actuating member 41.

Then, the head 19' of the clamp member 19 is pressed against the groove part 15 of the lower die 3, and the lower die 3 is fixed to the lower frame 1.

In order to release the fixation of the lower die 3, the fluid that was being force-fed to the hole 49 may be returned to the fluid tank or the like, and the fluid may be force-fed to the other hole 51.

Thereafter, the clamp member 19 rises due to the above action, and the fixation of the lower die 3 is released.

In particular, this embodiment is characterized in that even if the pumped fluid leaks while the lower die 3 is being fixed to the lower frame 1, the clamping force of the clamping member 19 will not loosen due to the interaction of the bullets 57, 59.

In the above embodiments, only the structure for attaching and detaching the lower mold to the lower frame has been described, but it goes without saying that the mold attaching device according to this invention can also be applied to the upper mold.

As described above, this invention provides a mold with an appropriate number of retaining parts on the joint surface with the mold mounting surface of the base, and engages with the engaging parts to attach the mold to the base. A clamp member having a fixable head is provided so as to protrude from the mold mounting surface of the base and is movable up and down, and the clamp member is provided between the support base provided at the end of the clamp member and the base. Since the wedge-shaped clamp actuating member for moving the member downward is provided so as to be movable in the horizontal direction,
The molds such as the lower mold can be instantly attached to and removed from the mold mounting base, and the time required for replacing the molds can be extremely shortened.

In addition, since the lower mold is attached by engaging the retaining part (groove) provided on the lower mold with the clamp member provided protruding from the mold mounting surface of the base, centering is easy and work is easy. This can reduce the stress on the operator during centering work and improve work efficiency.

Furthermore, since the clamp member is lowered by the action of the wedge-shaped clamp actuating member, the clamp of the lower die will not loosen even due to vibrations of the machine or the like.

[Brief explanation of the drawing]

Figure 1 is a front view of the press brake according to this invention, and Figure 2 is a front view of the press brake according to this invention.
The figure is a plan sectional explanatory view of the main part of this invention, FIG. 3 is a front sectional view thereof, and FIG. 4 is a side sectional view thereof. Explanation of the symbols representing the main parts of the drawing, 1...
Base (lower frame), 3...Mold (lower mold)
, 13... Engaging portion (groove), 19... Clamp member, 19'... Head, 29...
- Support stand, 41... Clamp operating member.

Claims (1)

[Scope of utility model registration request] Appropriate number of engaging parts 13 on the joint surface with the mold mounting surface of the base 1
A clamping member 19 having a head 19' that engages with the retaining portion 13 to freely fix the mold 3 to the base 1 is provided on the mold mounting surface of the base 1. a wedge-shaped clamp actuating member that is provided more protrudingly and is movable up and down, and is located between the support stand 29 provided at the end of the clamp member 19 and the base 1, for moving the clamp member 19 downward; A mold mounting device for a press brake, characterized in that a mold mounting device 41 is provided movably in the horizontal direction.