JPS607890Y2 - Molding machine toggle device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a trouble device used in mold clamping devices such as die casting machines and injection molding machines.

For example, in a die casting machine, as shown in FIG. 1, a fixed platen 2 and an end platen 3 are respectively fixed on both ends of a machine base 1.
Both ends of a tie bar 4 are attached to the tie bar 4, and a movable platen 5 is slidably fitted to the tie bar 4.
Molds 6 and 7 are respectively attached to the fixed platen 2 and the movable platen 5, and a trouble device 8 for clamping the molds 6 and 7 is provided between the movable platen 5 and the end platen 3.
The end platen 3 is provided with a cylinder device 9 for driving the trouble device 8 to clamp the mold.

A trouble device 8 in this type of molded plate is a plurality of first link groups 10 connecting the end platen 3 and the moving platen 5, and a second link group 11 connecting the first link groups 10.
The second link group 11 is connected to the cylinder device 9.
When the first link group 1 is pressed and approaches the fully extended state, the first link group 1
When the center portion of the mold 0 is pushed by the second link group 11 and approaches the maximum extension state, a large mold clamping force is generated.

By the way, the first link group 10 of the trouble device 8 is as follows:
Normally, the cast steel trouble link installed integrally with the end platen 3 and the movable platen 5 is attached to the part 12.
And, the trouble link is installed by attaching the doggle pin 13 to the part 12.
Conventionally, as shown in FIG. 2, a keyway 15 is formed at the end of the doggle pin 13, and the trouble link is attached to the part 12. There is a keyway 16 that communicates with the keyway 15.
To install the doggle pin, connect it to the hole 17, and to install the trouble link, install the key 20 integrally with the plate 19 fixed to the outer end surface of the part 12 with the screw 18, and fit the key 20 into both key grooves 15 and 16. Because of this, when the trouble link is attached, the strength of the area near the hole 17 and the keyway 16 is weakened when the trouble link is attached. The key 20 integrated with is the trouble link 1
4 rotates together with the doggle pin 13, and when the link is attached, the part 12 may be destroyed at the key groove 16.

For this reason, it becomes necessary to repair or replace the part 12 when installing the trouble link, and in this case, when installing the trouble link, it is necessary to remove or replace the end platen 3 and movable platen 5, which are integrated with the part 12, from the die-casting machine. As a result, repair work at the time of seizure is troublesome, and repair costs are high.

The present invention aims to avoid damage to the trouble link itself when installing the trouble link, so that repairs in the event of seizure can be done relatively quickly, easily and inexpensively, and to enable early detection of seizure. The purpose is to
The plate is fixed to the end of the doggle pin via a key, and the trouble link is installed by installing a cutting pin at a position away from the hole. Accordingly, the plate and the trouble link are attached to each other to restrict their rotation.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In the following description, the same components as those of the apparatus shown in FIG. 1 are given the same reference numerals.

In FIG. 3, reference numeral 12 denotes a trouble link attachment part which forms a part of the trouble device 8 of the die casting machine, and the trouble link attachment part 12 is provided integrally with the end platen 3 or the movable platen 5.

A hole 17 is formed in the trouble link mounting portion 12 and has a circular cross section, and a doggle pin 13 is inserted into the hole 17.

Here, the two trouble links 14 are doggle pins 13
A bushing 21 is provided on the inner surface of the doggle pin 13 for smooth sliding with the trouble link 14.

The doggle pin 13 is dimensioned such that both ends thereof protrude outward from both outer end surfaces 12A of the trouble link attachment section 12, and a key 22 is integrally formed on the end surface of the doggle pin 13. .

A plate 23 is fixed to the end of the doggle pin 13 via a key 22.

That is, here, as shown in FIG. 4, a circular recess 24 that is compatible with the end of the doggle pin 13 is formed on the side surface near one end of the plate 23.
A key groove 25 compatible with the key 22 is formed at the bottom of the key 22,
When the doggle pin 13 and the plate 23 are fitted together, the key 22 fits into the keyway 25, thereby restricting rotation of the plate 23 with respect to the doggle pin 13.

For trouble link attachment, a hole 27 for inserting a cutting pin 26 is formed at a position away from the hole 17, and a hole 28 communicating with the hole 27 is formed near the other end of the plate 23. formed, both holes 27
．． The plate 23 and the trouble link attachment portion 12 are fixed by a cutting pin 26 inserted into the hole 28.

Note that if the cutting pin 26 is tightly fitted into the holes 27 and 28, the cutting pin 26 can prevent the plate 23 from falling off from the doggle pin 13, but a separate machine screw (not shown) can prevent the plate 23 from becoming a trouble link. The attachment may be done by fastening the part 12.

In the above embodiment, when the trouble device 8 is activated,
Since the doggle pin 13 is fixed to the trouble link attachment part 12 via the key 22, plate 23 and cutting pin 26, only the trouble link 14 is connected to the doggle pin 1.
Rotates around 3.

If trouble link 14 and doggle pin 13 seize due to lack of lubricant, trouble link 1
4, a torsional moment is applied to the doggle pin 13, and due to the action of this torsional moment, an external force is transmitted from the doggle pin 13 to the trouble link attachment part 12 via the key 22, plate 23, and cutting pin 26. Since the cutting pin 26 is cut when the shearing force acting on the cutting pin 26 reaches a predetermined magnitude, the doggle pin 13 can freely rotate with respect to the trouble link attachment part 12 thereafter.

Therefore, damage to the portion 12 is avoided during troublesome link installation.

In particular, the trouble link mounting section 12 does not have a keyway that communicates with the hole 17 for the doggle pin mounting, and the hole 27 is simply formed at a position away from the hole 17 for the doggle pin mounting. The trouble link mounting portion 12 has sufficiently high strength.

Therefore, the trouble link attachment section 12 will not be damaged due to breakage of the cutting pin 26.

Note that when the plate 23 and the trouble link mounting section 12 are fastened together using machine screws (not shown), the machine screw will also break as the cutting pin 26 breaks, but even in this case, the trouble link mounting will not be possible. 12 will not be damaged.

As mentioned above, doggle pin 13 and trouble link 14
Trouble link mounting will not damage the trouble link attachment part 12 due to seizure, and the broken cutting pin 26 can be easily pulled out from the hole 27. This can be done relatively easily by simply replacing the oil or supplying more lubricant.

Of course, due to the breakage of the cutting pin 26, the doggle pin 13
Since you can see that burn-in has occurred, you can detect burn-in early and take action before it becomes a serious problem.

Although one embodiment has been described above, the present invention is not limited to the above embodiment, and includes, for example, the following modifications.

(2) A key groove may be provided on the end face of the doggle pin, and a key that fits into the key groove may be integrally provided on the plate.

Further, key grooves may be provided in both the doggle pin and the plate, and the key may be fitted into both key grooves.

■ The doggle pin may be shaped so that the trouble link attachment is located on the same plane as the outer end surface of the part.

■ The cutting pin may be formed with a male thread, and the trouble link may be installed by forming a female thread in the hole on the side of the cutting pin.

In this case, there is no need to fasten the plate and the trouble link mounting section using separate machine screws or the like.

(2) The present invention can be applied to link connection locations other than those in the above embodiments, and can also be applied to troubleshooting devices for molding machines other than die-casting machines.

As is clear from the above explanation, the present invention is designed to restrict the rotation of the plate fixed to the doggle pin and the trouble link mounting section, and to attach the trouble link to the trouble link mounting section. Since the trouble link is installed using a cutting pin that fits into the hole, the problem link installation can minimize the strength loss in the vicinity of the hole. In the event of seizure, trouble link installation allows the cutting pin to break and the doggle pin to rotate freely without damaging the part.

Therefore, when repairing seizure, there is no need to remove or replace a heavy component that is integral with the trouble link attachment, and the repair can be performed quickly, easily, and at low cost.

In addition, the breakage of the cutting pin makes it possible to detect seizures between the doggle pin and the trouble link at an early stage.
Installing a doggle pin can prevent hole wear, etc.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the basic configuration of a die-casting machine, Fig. 2 is an exploded perspective view of main parts of a troublesome device showing a conventional technique,
FIG. 3 is a sectional view of a main part of a troublesome device showing an embodiment of the present invention, and FIG. 4 is an exploded perspective view of a main part of the device shown in FIG. 12...Trouble link installation part, 13...
... Doggle pin, 14 ... Trouble link, 17 ... Doggle pin installation hole, 22 ...
...Key, 23...Plate, 26...
... Cutting pin, 27... Cutting pin installation hole.

Claims (1)

[Scope of utility model registration request] To attach the trouble link to the molded plate, attach a doggle pin that rotatably supports the trouble link in the hole, and fix the plate to the end of the doggle pin via a key. A hole is provided in the part for attaching the trouble link, and a hole is provided in the part for attaching the trouble link, and the rotation between the plate and the part for attaching the trouble link is regulated by the cutting pin fitted in the hole. Trouble device.