JPS6037136Y2 - Mold fixing device for press machines - Google Patents

Description

[Detailed description of the invention] This invention relates to a device for fixing a mold to the mold surrounding frame of a press machine with a clamper, and is designed to allow the mold to be easily and quickly attached and removed while also ensuring a wide working surface of the press machine. The purpose is to do.

In order to prevent the clamp arm of the clamper from interfering with loading and unloading the mold into the mold fixing frame of the press machine, it is necessary to move the clamper back to the outside of the loading/unloading space.

Further, when carrying in and fixing the mold, it is necessary to move the clamper forward.

Conventionally, the clampers were moved forward and backward one by one manually, which took time and effort, resulting in inefficiency and lowering the operating rate of the press machine.

In order to eliminate such drawbacks, the inventor of the present invention has devised a method of moving one or more clampers forward and backward using an actuating device such as a hydraulic cylinder, thereby making it possible to move them forward and backward easily and quickly by operating a lever or the like.

Therefore, when we placed a hydraulic cylinder on the rear side of the clamper in the forward and backward direction and used this cylinder to push and pull the rear of the clamper, we were able to move one or more clampers forward and backward easily and quickly.

However, since the hydraulic cylinder is attached to the rear side of the clamper, its total length becomes longer, and the total length of the working surface of the opposing clamper on the mold fixing frame becomes shorter, which makes it difficult to handle large molds. A problem has arisen that makes it impossible to use the .

In order to further solve this problem, the present invention disposes an actuating device such as a hydraulic cylinder in the outer circumferential space when viewed from the forward/backward direction of the clamper, that is, on the left, right, or above, so that at least a portion of the hydraulic cylinder The hydraulic cylinder and the clamper are lapped in the direction of movement of the clamper, and the total length of the hydraulic cylinder and clamper is shortened by the amount of the lap, thereby securing a wide working surface.

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

1 and 2 show the press working section of a press machine.

The upper and lower molds 1 and 2 are fixed in advance to each die plate 3.4, and each of the upper and lower die plates 3.4 is attached to a set of four clampers on each of the upper and lower mold fixing frames 6°7 of the press machine 5. Fixed at 8.

The upper mold fixing frame 6 is fixed to the ram 9, and the lower mold fixing frame 7 is called a bolster plate and is fixed on the bed 10.

On each mold fixing surface of each mold fixing frame 6, 7, a plurality of T-shaped mounting grooves 11 are formed running left and right and lined up front and rear.

The T-shaped legs 12 of each clamper 8 are fitted into the mounting grooves 11 so as to be slidable left and right.

Each clamper 8 has a structure in which a clamp arm 13 is pivoted into a clamping position by a hydraulic cylinder 14 against a return spring 15.

Each clamper 8 is equipped with a hydraulic cylinder (an example of an actuating device) 16
It can slide forward and backward with
can be fixed, and in the retreated state, it escapes to the outside of the left and right edges of the die plates 3 and 4, and the die plate 3
, 4 can be carried in and out for attachment and detachment.

As shown in FIGS. 1 to 9, each hydraulic cylinder 16 is of a spring extension single-acting type, and has a structure in which it is extended by a spring 17 and contracted by hydraulic oil press-fitted into a hydraulic chamber 18.

In each hydraulic cylinder 16, a barrel body 19 is fixed with bolts 20 to the lateral side of each clamper 8 when viewed from the advancing and retreating direction, and the tip of a piston rod 21 is connected to upper and lower fixtures 22 and 23 via a displacement absorbing mechanism 24. are connected.

The upper and lower fixing members 22 and 23 are fixed to the portions of the mold fixing frames 6.7 on the left and right edges of the clamper 8, respectively.

As shown in FIGS. 7 to 9, the upper fixture 22 is shaped to protrude outward from the left and right at a portion slightly forward of the attachment 11 on the left and right end surfaces of the upper mold fixing frame 6. It is fixed with bolts 25.

As shown in FIGS. 3 to 6, the lower fixture 23 is fitted with a bolt 26 and a nut 27 at the rear portion of the mounting groove 11 of the lower mold fixing frame 7 in the forward and backward direction of the clamper 8 so as to be able to move forward and backward.
The vibration prevention fitting portion 28 fits into the mounting groove 11 to prevent vibration.

In this case, the upper mold fixing frame 6 is considerably shorter in width than the lower mold fixing frame 7, and the upper fixture 22 protrudes outside the width of the upper mold fixing frame 6; It fits within the width of the mold fixing frame 7 and does not protrude outside the width of the press machine 5.

The displacement absorption mechanism 24 is configured to move the leg portion 12 of the clamper 8 when the hydraulic cylinder 16 moves the clamper 8 forward or backward.
The piston rod 2
1 and the fixtures 22 and 23 are vertically displaced, horizontally displaced, and swung horizontally when viewed from the forward and backward direction of the clamper 8. By absorbing these movements, the clamper 8 is fitted into the mounting groove 11. It allows for smooth sliding without tension, and is constructed as follows.

That is, a loose fit hole 30 is formed in the actuator connecting portion 29 at the free end of the fixture 24, and the tip of the piston rod 21 of the hydraulic cylinder 16 is inserted into the loose fit hole 30 with a predetermined gap. .

A pin hole 31 is formed in the center bottom of the free end hole 30, and a connecting pin 32 is loosely fitted into this pin hole 31. The connecting pin 32 can be rotated within a certain range due to the large loose fit between the knock pin 33 and the loose hole 34. It is supported so that it can move and move up and down.

The head 35 of the connecting pin 32 is formed flat, and there is a locking groove 36 formed on the lower surface of the tip of the piston rod 21.
are fitted so that they can be moved vertically and horizontally within a certain range.

As another embodiment of the present invention, a part of the above embodiment may be modified as follows.

(4) As shown in FIG. 10, in the hydraulic cylinder 16 of the upper mold fixing frame 6, the connecting pin 32, which forms each locking groove 36 at a plurality of locations in the forward and backward direction of the piston rod 21, is fixed with a spring 37. While advancing to the locking position, the knob 38
By pulling , the lock can be retracted to the unlocked position.

Thereby, by locking any one of the plurality of locking grooves 36 to the connecting pin 32, it is possible to adjust the forward and backward movement range of the clamper 8.

(B) As shown in FIG. 11, the upper fixing device 22 is fixed with a pin 39, both sides of the head 40 of this pin-type fixing device 39 are formed flat, and a retaining groove 41 is formed in the middle of the abdomen. form.

A mounting hole 42 is bored at a location slightly away from the mounting groove 11 on the upper surface of the upper mold fixing frame 6.

The legs of the pin-type fixture 39 are rotatably inserted into the mounting holes 42, and the retaining plates 42 engaged with the retaining grooves 41 are fixed to the upper mold fixing frame 6 with machine screws 43.

Then, the locking groove 36 of the piston rod 21 is engaged from above with the flat head 40 of the pin type fixture 39 so as to be movable vertically and horizontally.

(C) Instead of the hydraulic cylinder 16, an air cylinder or a mechanical reciprocating drive device is used.

As a mechanical reciprocating drive device, for example, a device that reciprocates a screw shaft using a small motor to move the nut forward and backward can be considered.

<DJ Fixture 2 of cylinder main body 19 of hydraulic cylinder 16
2.23, and also connect the tip of the piston rod 21 to the clamper 8.

(E) Make the hydraulic cylinder 16 double-acting.

Since the present invention is configured as described above, it has the following effects.

(a) Since the clamper is moved forward and backward by the actuating device, it can be moved easily and quickly forward and backward by lever operation, etc.

Thereby, the time required to attach and detach the mold from the mold fixing frame can be shortened and the operating rate of the press machine can be increased.

(b) Since the actuating device is placed in the outer circumferential space of the clamper, that is, on the side or above the clamper when viewed from the direction of movement of the clamper, the clamper is placed closer to the edge of the mold fixing frame than in a case where the hydraulic cylinder is placed behind the clamper. By drawing them together, the total length of the working surface between the opposing clampers on the mold fixing frame and the dirt floor can be lengthened, and even large molds can be used satisfactorily.

(c) By fixing the fixture in the mounting groove formed in the mold fixing frame so that it can be moved back and forth, the range in which the clamper can be moved forward and backward can be adjusted by driving the clamper forward and backward using the actuating device. This includes not only the distance, but also the distance in which the actuating device itself can be moved by moving the fixture forward and backward, so it is possible to position the clamper largely toward the edge of the mold fixing frame, or to position it sufficiently close to the center. The distance between the opposing clampers of the mold fixing frame can be made sufficiently short or long.

As a result, gouly plates of various widths can be used for one press machine, making the device highly versatile.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of the main parts of the press machine, FIG. 2 is a view taken along the line ■-■ in FIG. 1, and FIG. 3 is an enlarged view of the Figure 4 is a partial cross-sectional plan view of Figure 3;
Figure 5 is a sectional view taken along the line ■-■ in Figure 3, and Figure 6 is a cross-sectional view taken along the line VI-- in Figure 4.
7 is an enlarged cross-sectional view of part ■ in Figure 1, Figure 8 is a cross-sectional view along line ■-■ in Figure 7, Figure 9 is a bottom view of Figure 7, and Figure 10 is a different example. FIG. 7 is a diagram corresponding to an example, and FIG. 11 is a diagram corresponding to FIG. 5 according to another embodiment. 5...Press machine, 6,7...Mold fixing frame, 8...Clamper, 11...Mounting groove, 12... Mounting leg, 16... Actuation device (fluid pressure actuation cylinder), 21... Advance/retreat actuator, 22. 23.39・Songs・Fixing tools, 24・・・・
...Displacement absorption mechanism, 29... Actuation device connection part,
32... Connection pin, 36... Locking groove.

Claims (1)

[Claims for Utility Model Registration] 1. A mounting groove 11 is formed in the mold fixing surfaces of the upper and lower mold fixing frames 6, 7 of the press machine 5, and the mounting leg 12 of the clamper 8 is inserted into the mounting groove 11 in a manner that prevents it from coming out. The upper fixtures 22 and 39 are fixed to the edge side of the upper mold fixing frame 6, and the lower fixtures 22 and 39 are inserted into the mounting groove 11 formed in the lower mold fixing frame 7. 23 is fixed so that it can be moved forward and backward, and the fixtures 22, 23.3
9 and the clamper 8, an actuating device 16 for driving the clamper 8 forward and backward is mounted, and at least a part of the actuating device 16 is arranged in the outer circumferential space of the clamper 8 when viewed from the forward and backward direction of the clamper 8. Mold fixing device. 2. Scope of Utility Model Registration In the mold fixing device for a press machine described in claim 1, the actuating device 16 is a fluid pressure actuating cylinder. 3. In the mold fixing device for a press machine described in claim 1 or 2 of the utility model registration claim, the actuating device 16
At least a part of the clamper 8 is disposed in the lateral outer space of the clamper 8 when viewed from the sliding force direction of the clamper 8. 4 Scope of Utility Model Registration Claims Paragraph 1, Paragraph 2 or Paragraph 3
In the mold fixing device for a press machine described in 1., the main body 19 of the actuating device 16 is fixed to the clamper 8. 5. In the mold fixing device for a press machine described in claim 1, 2, 3, or 4 of the utility model registration claim, the actuating device connecting portion 29 of the upper fixture 22 is connected to the upper mold. Something that protrudes outside the edge of the fixed frame 6. 6. In the mold fixing device for a press machine described in claim 1, 2, 3, or 4 of the utility model registration claim, the upper fixture 39 is placed on the surface of the upper mold fixing frame 6. The part that has come off from the mounting groove 11 is fixed. 7. In the mold fixing device for a press machine described in any one of claims 4 and 5 of the utility model registration claims, the actuating device 16 moves forward and backward in the actuating device connecting portion 29 of the fixture 22.23. The actuating section 21 is connected via a displacement absorbing mechanism 24 so as to be vertically displaceable, horizontally displaceable, and horizontally swingable within a certain range. 8 Utility Model Registration In the mold fixing device for a press machine described in claim 7, the advancing/retracting actuating portion 21 of the actuating device 16 of the actuating device connecting portion 29 of the fixture 22, 23 is connected via the connecting pin 32. The connecting pin 32 is pivotally supported on the actuating device connecting part 29 so as to be able to swing left and right, and the locking groove 36 of the advancing/retracting actuating part 21 is engaged with the connecting pin 32 so that it can be vertically and horizontally displaced within a certain range. thing. 9 In the mold fixing device for a press machine described in claim 8 of the utility model registration, locking grooves 36 are formed at a plurality of locations in the advancing and retracting direction of the advancing/retracting operating portion 21, and these plurality of locking grooves 36 The connecting pin 32 can be engaged and changed on the same dirt floor.