JPH0565508U - Clamp device - Google Patents

Abstract

(57) [Summary] [Purpose] A strong clamping force is obtained with a simple structure that is easy to operate. [Structure] A hook 12 which is locked to a locking pin 5 fixed to an upper frame 1 which is one clamped member, and a fulcrum pin 11 to a bracket 7 which is fixed to a lower frame 2 which is another clamped member. The operating rod 10 pivotally attached and the hook 12 which is fitted in the guide hole 9 provided in the bracket 7 and which is moved in conjunction with the rotation of the operating rod 10 to be unlocked by the locking pin 5. The guide roller 14 connects the bracket 7 to the bracket 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention clamps an upper frame, which is one clamped member to which an upper mold is attached, and a lower frame, which is the other clamped member to which a lower mold is attached, in order to mold, for example, a seat for automobiles. For the device.

[0002]

[Prior Art]

 Cold molding, different hardness molding, and hot molding are generally used as the molding methods for automobile seat cushions, but when the foam material such as polyurethane foam is injected into the mold for foam molding, Because of its good quality, cold molding and different hardness molding have been widely adopted.

However, in the cold forming and the different hardness molding, since a large gas vent hole is not provided unlike the hot molding in order to improve the cushioning property, the internal pressure of the die becomes high. Therefore, the clamp device that clamps the upper and lower molds at the time of molding is not able to withstand the internal pressure enough on the market, and since it is heated at the time of molding, there is also a problem in durability, and the current situation is that it is difficult to take countermeasures. Is.

[0004]

[Problems to be solved by the device]

 The problem to be solved by this invention is to provide a clamping device with a strong clamping force capable of withstanding a large internal pressure and durability, as in the case of forming a seat cushion for an automobile.

[0005]

[Means for Solving the Problems]

 The clamp device according to the present invention includes a hook that engages with a locking pin that is fixed to one clamped member, an operating rod that is pivotally attached to a bracket that is fixed to the other clamped member by a fulcrum pin, and a hook. Hooks and brackets that engage with the connecting pins pivotally attached to the operating rod and the guide holes provided in the bracket to release the hooks that move in conjunction with the rotation of the operating rod to the locking pins. It consists of a guide roller that connects the.

[0006]

【Example】

 The drawing shows a clamping device A for clamping the upper frame for mounting the upper mold and the lower frame for mounting the lower mold, which are used for molding the above-mentioned automobile seat cushion. Of course, the clamping device of the present invention can also be used to clamp different clamped members.

Reference numeral 1 denotes an upper frame which is one member to be clamped, on which an upper mold (not shown) is mounted. Reference numeral 2 is a lower frame which is the other member to be clamped for mounting a lower mold (not shown). A movable base 3 is fixed to the front surface of the upper frame 1 so that the vertical position can be adjusted, and locking pins 5 are fixed to both legs of a U-shaped bracket 4 fixed on the movable base 3. ..

A fixed base 6 is fixed to the front surface of the lower frame 2, and a bracket 7 is vertically provided on the upper surface of the fixed base. Reference numeral 8 denotes a guide plate, which is fixed to the upper end portion of the bracket 7 so that the left and right positions can be adjusted, and a guide hole 9 is provided therethrough. The guide hole 9 is formed of a guide portion 9a that slightly descends to the right and a lock portion 9b that bends downward.

Reference numeral 10 is a plate-like operating rod, the upper end of which is pivotally attached to the racket 7 by a fulcrum pin 11, and the lower end of which is fixed to the connecting rod 2 a of the lower frame 2.

Reference numeral 12 is a hook, the upper end of which is formed in a beak shape so that it can be engaged with and disengaged from the engaging pin 5, and the lower end is pivotally attached to the operating rod 10 by a connecting pin 13. .. Reference numeral 14 is a guide roller, one end of which is fitted into the guide hole 9 so as to be rotatable, and the shaft of the guide roller 14 is pivotally attached to the upper end of the hook 12. Reference numeral 15 denotes a stop mechanism of the operating rod 10, in which a steel ball pushed to the operating rod 10 side by a compression spring is inserted into a V-shaped hole formed in the operating rod 10 in a cylinder fixed to the bracket 7. Fit and stop the operating rod 10 at the clamp and unclamp positions.

As shown in FIG. 4, such a clamp device A is arranged on the front faces of the upper and lower frames 1 and 2 whose rear parts are connected to each other by a hinge (not shown), and in the embodiment, four clamp devices A are arranged at equal intervals. .. Reference numeral 1a is a roller for opening and closing the upper frame 1, and 2b is a roller for clamping.

[0012]

[Action]

 In the clamped state of the upper and lower frames 1 and 2 shown in FIGS. 1, 2, and 4, the hook 12 is locked to the locking pin 5, and the guide roller 14 is fitted into the lock portion 9b of the guide hole 9. , The hook 12 is locked.

When the clamp roller 2b is rotated upward to release the clamp, the operating rod 10 is rotated upward with the fulcrum pin 11 as a fulcrum. Therefore, the hook 12, which is connected to the operating rod 10 by the connecting pin 13, rotates upward with the fulcrum pin 11 as a fulcrum. Therefore, the guide roller 14 disengages from the lock portion 9b of the guide hole 9 and ascends the guide portion 9a, so that the hook 12 is released from the locking pin and the upper and lower frames 1 and 2 are unclamped.

When clamping, when the clamping roller 2b is rotated downward, the connecting rod 2a and the operating plate 10 are also rotated downward with the fulcrum pin 11 as a fulcrum. Therefore, the hook 12 also rotates downward with the connecting pin 13 as a fulcrum, but the upper end of the hook moves to the locking pin 5 side by being guided by the guide roller 14 rolling on the guiding portion 9a. Finally, the upper end of the hook 12 is locked by the locking pin 5, and the guide roller 14 is fitted in the lock portion 9b to be in a clamped state.

In the embodiment, the upper and lower frames 1 and 2 are provided with the four clamp devices A connected to each other by the connecting rods, so that all the clamp devices A are clamped and unclamped at the same time.

[0016]

[Effect of the device]

 It is possible to clamp and unclamp with a strong force by an easy operation that rotates the operating rod without the need for complicated operations such as screw rotation. Moreover, since the structure is simple, there is no failure and it is highly durable.

If formed as in the embodiment, it is possible to operate a plurality of clamp devices at once, and it is possible to handle molds of different sizes.

[Brief description of drawings]

FIG. 1 is a side view of a clamped state.

FIG. 2 is a front view of a clamped state.

FIG. 3 is a side view of a main part in an unclamped state.

FIG. 4 is a schematic front view showing the entire upper frame and lower frame.

[Explanation of sign]

 A Clamping device 1 Upper frame 2 Lower frame 5 Locking pin 7 Bracket 9 Guide hole 10 Actuating rod 11 Support point pin 12 Hook 13 Connecting pin 14 Guide roller

Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display area B29L 31:58 4F

Claims (1)

[Scope of utility model registration request] 1. A hook that is locked to a locking pin that is fixed to one clamped member, an operating rod that is pivotally attached to a bracket that is fixed to the other clamped member by a fulcrum pin, and a hook is an operating rod. A guide for connecting the hook and the bracket, which is fitted in a connecting hole pivotally attached to the guide plate and a guide hole provided in the guide plate, and which unlocks the hook that moves in conjunction with the rotation of the operating rod to the locking pin. A clamping device consisting of a roller.