JPH0338496Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a pull clamp device (toggle clamp device) that connects two members using a pull rod.

(Prior art and its problems) A conventional pull clamp device includes a holder 15, a lever 7, and a pull rod 21, as shown in FIG. 6, for example. According to such a device, when the lever 17 is rotated and opened in the direction of arrow A, the pull rod 21 comes into contact with the mating member 6, and after the mating member 6 is removed, the rod 21 moves along the imaginary line. As shown, it hangs down so as to protrude greatly toward the other member (lower right side).

Therefore, when attempting to connect the mating member 6 by placing it under one member 8 again, or when attempting to join another new mating member 6,
The rod 21 (imaginary line) becomes a hindrance, making it time-consuming to replace the mating member 6, and there is also a risk that the mating member 6 will hit the rod 21 and damage the rod 21 or the mating member.

(Means for Solving the Problem) In order to solve the above problem, the present invention provides a stopper part integrally on the rod, a receiving member that can freely engage with the stopper part on the holder, and a receiving member that can freely engage with the stopper part. The rod is configured to be held in a rotational position where it does not interfere with the mating member by engagement between the stopper member and the stopper portion.

(Function) When the two members are separated, the rod is held in a position where it does not buffer against the other member by engaging the stopper portion with the receiving member. Further, when performing the tightening operation, the stopper portion is removed from the receiving member.

(Embodiment) FIG. 5 shows an example in which a mold release agent spray device used for die-casting is equipped with the clamp device 13 of the present invention. In FIG. 5, 1 and 2 are a fixed mold and a movable mold for die-casting, and when the two molds are separated as shown in the figure,
The nozzle unit 3 of the spray device connects both molds 1 and 2.
descend in between. The nozzle unit 3 includes a pair of plates 4 spaced apart from each other and a distribution manifold 6.
The plate 4 is provided with a large number of spray nozzles 10 and short air nozzles 14 that respectively face adjacent molds.
is connected to the branch outlet of the distribution manifold 6 via a tube. Both plates 4, 4 are integrally connected by a connecting bolt 9, and the manifold 6 is connected to the plate 4 via a bracket 6a etc.
is integrally connected to.

The distribution manifold 6 is removably connected to the upper manifold base 8 by a plurality of clamping devices 13 of the present invention, and the base 8 is connected to the cylinder 11.
It is connected to the rod part of. The base 8 is provided with an atomizer 5, which is connected to a release agent supply source and an air supply source, and mixes the release agent and air from both sources to form a release agent mixture. The mixture is distributed by the distribution manifold 6 and sprayed from each spray nozzle 10 toward the inner surface of the mold.

As the nozzle unit 3, several types of units are prepared in which the number of nozzles, nozzle arrangement, injection direction, and injection time are set for each mold.
After each type of die-casting operation, the clamping device 13 is opened and removed and the next new unit 3 is connected to the base 8.

FIG. 2 shows an enlarged front view of the clamp device arranged on the left side of FIG. 5, for example, and in this FIG.
5, lever 17, pull rod (bolt rod) 2
1. Consists of a stopper bolt 27, a receiving member 28, etc. The holder 15 has a U-shape with a left opening when viewed from above, and its right end wall is fixed to the side surface of the base 8 with bolts 23. A concentric shaft 16 divided into front and rear parts is fixed to the front and rear sides of the holder 15, and a base end of a lever 17 is rotatably supported on the shaft 16. The lever 17 is formed in a U-shape that opens to the right when viewed from above, and the lower half of the left end wall opens to the left.

A pin 20 parallel to the shaft 16 is fixed to an intermediate portion of the lever 17, and a rectangular block nut 18 is rotatably supported on the pin 20.

The upper end of a rod 21 is screwed into the female threaded hole 19 of the block nut 18 from below, and a stopper bolt 27 is screwed from above so as to be coaxial with the rod 21. A lock nut 26 is screwed onto the rod 21 for fixing the rod 21 by a desired amount of downward protrusion.

A head 22 is integrally formed at the lower end of the rod 21, and a head 27a is integrally formed at the upper end of the stopper bolt 27.

The receiving member 28 is provided on the right end wall of the holder 15 in an upwardly projecting manner, and is formed into a gate shape as shown in FIG. It's starting to fit together. The front and rear lower ends 28a of the receiving member 28 are bent outward, inserted into the holder 15 through the elongated holes 33 of the upper end wall 15a of the holder 15, and engaged with the engagement holes on both the front and rear walls of the holder 15. ing.

The height of the receiving member 28 is such that when the stopper portion 27 of the rod 21 is engaged, the rod 21 projects obliquely to the lower left as shown in FIG.
In other words, it is formed at a height that allows it to be held in a state without being buffered by the manifold 6.

A flange portion 30 is formed on the side surface of the manifold 6 to project leftward, and a groove 31 with an open left end is formed in the flange portion 30, and a rod 21 is engaged with the groove 31 as shown in FIG. However, the head 22 is adapted to come into contact with the lower surface of the flange 30.

The clamp device 13 on the right side of FIG. 5 has the same structure as the clamp device 13 on the left side, except that the left and right sides are reversed.

Next, the manifold replacement work will be explained. Fig. 2 shows the tightened state, and the pin 20, which serves as the rotational fulcrum of the rod 21, is above the shaft 16 to the right, thereby maintaining the connected state of both members 8 and 6. ing.

When removing the manifold 6, rotate the lever 17 in the direction A around the shaft 16 from the state shown in FIG. rod 2
1's head 22 separates from the lower surface of the flange 30 and exits from the groove 31 to the left.

When the rod 21 separates from the flange 30, the rod 21 is rotated in the direction B as shown in FIG. 1, and the stopper bolt 27a is engaged with the receiving member 28. As a result, the rod 21 is held in a leftward protruding position and does not interfere with the manifold 6.

In the state shown in Figure 1, the manifold 6
is removed, and a manifold 6 of another nozzle unit is placed in which the nozzle position, number of nozzles, injection direction, etc. corresponding to the next mold are set in advance.

Next, remove the stopper bolt 27 from the receiving member 28, rotate the lever in the direction of arrow A, and remove the rod 2.
1 into the groove 31 of the flange 30, and then rotate the lever 7 in the direction of arrow A' to move the pin 20 over the shaft 16 from directly above to the right as shown in FIG. Tighten.

(Another Embodiment) (1) For example, both or one of the stopper portion 27 and the receiving member 28 may be formed into a hook shape.

(2) The present invention can also be applied to rods 21 where the lower end has a hook-like shape.

(3) In addition to being used as a spray device for spraying mold release agents, it can also be used to connect two parts of various machines.

(Effects of the Invention) As explained above, the present invention provides the stopper portion 27 integrally with the rod 21, and the receiving member 28 that can freely engage with the stopper portion 27 on the holder 1.
5, and the engagement between the receiving member 28 and the stopper part 27 holds the rod 21 in a rotational position that does not interfere with the mating member, so when replacing the mating member, the stopper part 27 can be By engaging with the receiving member 28, the rod 21
This eliminates the problem of getting in the way of the replacement work, improving the efficiency of the replacement work.

Furthermore, since there is no need to worry about hitting the rod 21 with the other member, there is no fear that the rod 21 or the other member will be damaged during the replacement work.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the state of the clamping device to which the present invention is applied when replacing a mating member, Fig. 2 is a front view showing the state during tightening, and Fig. 3 is a cross-sectional view of Fig. 1. Figure 4 is a view in the direction of the arrow in Figure 2, and Figure 5
The figure is a front view of a mold release agent spray device equipped with a clamp device according to the present invention, and FIG. 6 is a front view of a conventional example. 6, 8...Manifold, head (an example of a member to be joined), 15...Lever holder, 16...
...Shaft, 17...Lever, 20...Pin, 21...
Pull rod, 27...stopper part, 28...receiving member.

Claims (1)

[Scope of utility model registration request] A lever holder is fixed to one of the two members joined by a clamp device, the base end of the lever is rotatably supported by the lever holder via a shaft, and a pin parallel to the shaft is attached to the middle part of the lever. In a pull clamp device, a pull rod is rotatably supported through a lever, the tip of the rod is connected to a mating member, and a lever is rotated to pull the rod and connect the two members. The holder is provided with a receiving member that can be freely engaged with the stopper portion, and the rod is held in a rotational position that does not interfere with the mating member by engagement of the receiving member and the stopper portion. A pull clamp device characterized by comprising: