JPH0773745B2 - Equipment using T-slot with moving device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic clamp device used for fixing a die in a press machine, for example.
The present invention relates to a device using a groove having a moving device that moves along a T groove, in which dust is not caught during the movement.

[0002]

2. Description of the Related Art A conventional moving device such as a clamp device is described in Japanese Utility Model Application No. 58-78449. The outline is such that a clamp device movable along the T groove is pushed and pulled by a chain with a roller provided so as to pass through the T groove. Since the clamp device is operated by hydraulic pressure, the hose is connected, and the hydraulic hose is taken out of the T groove, there is a problem that it hinders work. For this reason, the applicant has developed a connector for pushing and pulling a clamp device in which a hydraulic hose and a chain with rollers are almost integrated, and a moving device for the clamp device using the connector. According to this, a part of the connecting body is composed of a hydraulic hose, and the connecting body is completely accommodated in the T groove at the portion passing through the T groove, that is, the hydraulic hose and the like do not come out of the T groove. So, I saw the completion.

[0003]

However, when the moving device of the clamp device is applied to the clamp device for fixing the lower die in the press machine, dust enters the T groove and pushes the clamp device. It turned out to be a troublesome problem. That is, when there is dust such as scrap scraps in the T groove during the pushing movement,
If dust such as metal pieces adheres to the inner surface of the groove with oil, the dust may be caught between the inner surface of the T-slot and the clamp device, making it impossible to move forward. It needs to be carefully removed first. There is a problem that it takes time and labor to remove the dust, and if the dust is neglected and the bite occurs, it takes a lot of time and labor to remove the dust and restore the normal state. According to the present invention, even if dust such as scrap pieces exists in the T-groove to some extent, the T-groove using device such as the clamp device can be smoothly moved from the retracted position to the used position. An object is to provide a device using a T-slot with a device.

[0004]

Means for Solving the Problems The means of the present invention is configured so that a T-groove using device such as a clamp can be pushed and pulled by a drive unit via a push-pull connector provided so as to pass through the T-groove. In the T-slot using device with a moving device, a wiper is provided on the T-slot using device so that dust in the T-slot can be pushed away by the push-pull movement. The wiper is provided at least at the front position when the device using the T-slot is pushed and moved, but may be provided at the rear position.

[0005]

For example, when the present invention is applied to a clamp device with a moving device for fixing a lower die of a press machine, the clamp device can be moved along a T groove between a predetermined clamp position and a retracted position. Clamping is performed at the clamp position, the die is fixed and press working is performed in that state, and when exchanging the die, it moves to the retracted position in the unclamped state and the die is exchanged. After that, it moves to the clamp position and clamps again. And even if there is a certain amount of dust in the T-slot when the clamp device is in the retracted state,
Since the wiper pushes the dust away during the forward movement to the clamp position, the dust is not caught between the T-slot using device and the T-slot inner surface. It should be noted that it is preferable to provide a separate lid means for dust that falls into the T-shaped groove toward the connecting body.

[0006]

EXAMPLE A first example is shown in FIGS. In the figure, reference numerals 50, 51 and 52 are wipers, 1 is a clamp device as a device using a T groove, 2 is a moving device, and 3 is a flexible belt. As shown in FIGS. 1 to 3, the wipers 50 and 51 are formed of rubber or synthetic resin, and are supported in the T-groove inside portion of the clamp device 1 by appropriate metal fittings. In the figure, the T-shaped groove 12 is shown as having a slightly deeper step at the center of the bottom, and the wiper 50 has a central portion protruding correspondingly and making contact with the entire width of the bottom surface of the T-shaped groove. The state in which the flexible belt 3 closes the T groove 12 of the clamp device 1 shown in the figure is a state in which the T groove is closed considerably inside the opening edge.
A wiper 52 is provided as shown in FIG. 1 in order to push away the foreign matter that has entered the upper portion of the T groove when the clamp device 1 is pulled and moved. In the figure, 53 is a lower mold, 54 is a U groove of the lower mold, and 55 is a proximity switch or limit switch for detecting the edge of the mold.

The clamp device 1 is adapted to fix the lower mold of the press machine by supplying and discharging pressure oil through the hydraulic hose 10, and the connecting portion 11 of the hydraulic hose 10 is fixed.
Are provided so as to be located in a wide portion in the T groove 12. In addition to this, a signal transmission cable 13 is provided in parallel with the hydraulic hose 10, and this is connected to a proximity switch which is provided at an appropriate position of the clamp device 1 and detects the positional relationship with the mold.

The moving device 2 is composed of a connecting body 14 and a drive portion 15. The connecting body 14 has rollers 16 on both outer sides.
The hydraulic hose 10 is constructed by connecting the roller-equipped chain 33 with the hydraulic hose 10 and connecting the links 17 and 18 sequentially by a shaft 19. The shaft 19 pivotally supports the rollers 16 at both outer ends, and the links 1 are respectively provided inside the rollers 16.
7 and 18 are pivotally supported, and a space between the links on both sides is formed in a large-diameter portion having a diameter slightly smaller than that of the roller 16 and also has a convex portion 20 in the radial direction. The large diameter portion has a shaft 19 having a hole through which the hydraulic hose 10 is inserted and a small hole through which the cable 13 is inserted.
The holes 20 are formed at right angles to the protruding direction of the protrusion 20 in the diametrical direction passing through the center of the. The end of the connecting body 14 on the side of the clamp device 1 is connected to the tip of the hydraulic hose 10 via a metal fitting 21, and a coil spring 22 in a compressed state is interposed between the metal fitting 21 and the tip of the chain with roller. The base end of the connector 14 is engaged with the sprocket 23 of the drive unit 15. Two sprockets 23 are fixed to the shaft 24 with a space therebetween and engage with the roller 16. The base end of the hydraulic hose 10 is connected to a pressure oil relay block provided between the two sprockets 23, and is connected to the pressure oil supply portion via the center hole of the shaft 24. The shaft 24 is rotationally driven in forward and reverse directions by a rotary actuator (not shown). In the retracted state of the clamp device 1 shown in FIG. 4, most of the connecting body 14 is wound around the sprocket 23, and in the wound state, it is guided from the outside by the guide 25 contacting the roller 16. There is. When the clamp device 1 is moved to the clamp position, the clamp device 1 moves from the state of FIG.
It is in a state of being pushed out along the groove 12, and the inner portion of the T-groove of the coupling body 14 is configured such that the roller 16 is guided to the upper and lower surfaces of the wide portion on the bottom side of the T-groove 12 as shown in FIG. There is. Inside the T-slot 12, the protrusion 20 of the shaft 19 of the connecting body 14
Is toward the T-groove opening side. The moving device 2 pushes or pulls the clamp device 1 through the connecting body 15 by the rotation of the sprocket 23 to move the clamp device 1 between the clamp position and the retracted position. In the figure, 26 is a main body, which supports the shaft 24,
The bolster 27 is attached to the mounting portion 28, and the guide 25 is formed inside.

The flexible belt 3 is a steel belt made of rubber and has a slightly arcuate cross section in this example, and its width dimension matches the groove width of the narrow portion on the opening side of the T groove. The dimension is such that the tip end is connected to the clamp device 1 via the L-shaped metal fitting 29 shown in phantom in FIG. The binding position is T
It is located in the narrow portion in the groove 12. The flexible belt 3 extends from the clamp device 1 along the connecting body 14 and T
This is closed in the groove 12 and is in contact with the tip of the convex portion 20 of the connecting body. In order to regulate this position, a wire 30 is connected to the base end of the guide roller 3 which is provided between the sprockets 23 on both sides.
1 is connected to one end of the tension spring 32,
The other end of the spring 32 is fixed to the sprocket 23. Therefore, the flexible belt 3 is always given a tension, and by this, the convex portions 20 are surely brought into contact with each other and their positions are regulated. In the figure, 34 is a scraper.

A clamp device with a moving device according to the second embodiment is shown in FIGS. 6 and 7. The main points different from the first embodiment are the flexible belt 3a, the structure for regulating its position, and the wiper 5.
0 and 51 are provided, and the wiper 52 is not provided. The attachment structure of the wipers 50 and 51 is substituted in FIGS. 1 to 3, and the equivalent parts are designated by the same reference numerals and the description thereof will be omitted.

The flexible belt 3a is a steel belt having a flat sectional shape with a width dimension slightly wider than the width of the opening of the T groove 12. Its tip is connected to the clamp device 1a,
The height position of the T-groove 12 is slightly lower than the upper surface 40 of the bolster or the like in which the T-groove 12 is provided. A guide 41 is provided by enlarging the width of the T-groove opening in the T-groove 12, and the flexible belt 3 is provided in the guide 41.
Both side edges of "a" are guided to close the T groove 12. In this embodiment, the projection 2 is formed on the shaft 19a of the connecting body 14a.
Since 0 is not provided, the flexible belt 3a does not contact the connecting body 14a in the T groove 12. Main body 26a of moving device 2
Inside, the guide 42 is provided on the convex side of the bent portion of the flexible belt 3a.
43 is provided. The guide 42 guides the flexible belt 3a so as to contact the roller 16 at a position where the connecting body 14a engages with the sprocket 23, and the guide 43 follows the guide 25 of the roller 16 and the width and thickness of the flexible belt 3a. It is provided in response to this. The base end of the flexible belt 3a has a connecting body 14
It terminates at the end position of the chain of a and is not designed to give tension. In this embodiment, the flexible belt 3a
Is guided by a guide over the entire length.

A clamp device with a moving device according to a third embodiment is shown in FIGS. 8 and 9. The main points different from the first embodiment are the flexible belt 3b, the structure for regulating the position thereof, and the wiper 5.
0 and 51 are provided, and the wiper 52 is not provided. The attachment structure of the wipers 50 and 51 is substituted in FIGS. 1 to 3, and the equivalent parts are designated by the same reference numerals and the description thereof will be omitted.

The flexible belt 3b is a steel belt having a slightly arcuate cross section and a width dimension wider than the opening width dimension of the T groove 12. The tip thereof is coupled to the clamp device 1b with the arcuate convex surface facing upward, and the height position of the T-groove 12 is the upper surface 40 of the bolster or the like in which the T-groove 12 is provided.
It is a position that corresponds to. The flexible belt 3b closes the opening of the T groove 12 at the T groove 12. The main body 26b of the moving device 2 is provided with an inlet guide 44 at an appropriate position in a straight line portion following the T groove 12, and there is no special guide in the other portion, and the portion is bent to engage the sprocket 23 with the connecting body 14b. The roller 16 is in contact with the roller 16, and the base end is connected to the sprocket 23 via the tension spring 32 as in the first embodiment. As a result, the roller 16 of the connecting body 14b, which is engaged with the sprocket 23, is guided by the guide 25 via the flexible belt 3b, and the flexible belt 3b is also guided.

In the first and third embodiments, the flexible belts 3 and 3b are stretched at their base ends by the tension springs 32, which are in a state of being wound around the sprocket 23 and at the time T.
With the straight state in the groove, the flexible belts 3 and 3b have an action of allowing a relative displacement in the length direction caused by the winding radius of the flexible belts 3 and 3b being larger than that of the coupling bodies 14 and 14b.

In each of the first, second and third embodiments, the moving device is of the winding type, but in addition to this, a slack portion is formed in the connecting body on the moving device side, such as a fluid pressure cylinder. It is also conceivable that the driving unit drives the connecting body so as to increase or decrease the amount of the slack portion and pushes and pulls the clamp device. Even for such a clamp device with a moving device, the T groove is provided. A flexible belt with a lid can be provided. In that case, if the ratio of the length of the straight portion to the length of the bent portion of the connecting body does not always change, it is not necessary to provide the tension spring.

In the above embodiment, the steel belt was used as the flexible belt, but this is only an example, and a synthetic resin belt or a combination of a steel belt and a synthetic resin belt can be used.

In the above embodiment, all the devices using the T-grooves have been described as the clamp device. However, in addition to this, jigs, tools or their holders in a machine tool or the like also move forward and backward along the T-grooves. It can be applied to things.

In each of the above-mentioned embodiments, when the T-slot using device (clamping device) is in the use position, there is a connecting body in the T-groove. Since it is configured to be closed by a flexible belt, it is possible to prevent dust such as small scraps from entering the T-groove where the connecting body is provided, and does not hinder the pulling movement of the equipment using the T-groove. .

[0019]

According to the present invention, since the wiper is provided, even if dust such as scraps may enter the T-slot when the device using the T-slot is in the retracted position, the wiper can be pushed and moved. Move it to push it away. Therefore, even if dust such as scrap pieces is present in the T-groove to some extent, the T-groove-equipped T-device with which the T-groove using device such as the clamp device can be smoothly moved to the use position such as the clamp position. A groove-using device can be provided. When this T-groove using device with a moving device is used, there is no inconvenience that the T-groove using device does not move due to the trapping of dust, and it is possible to save the trouble of carefully removing dust prior to pushing and moving. There is an effect that can be done.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a clamp device portion according to a first embodiment of the present invention.

FIG. 2 is a front view of an inner portion of the T groove of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is a partially cutaway side view of a vertical section of the embodiment.

FIG. 5 is a partially cutaway front view of the embodiment.

FIG. 6 is a partially cutaway side view in a vertical cross section of a main part of the second embodiment.

FIG. 7 is a cross-sectional view showing a state in which the connection body and the flexible bell of the embodiment are in a T groove.

FIG. 8 is a partially cutaway side view of a vertical cross section of a main part of the third embodiment.

FIG. 9 is a sectional view taken along line AA of the same embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clamp device (equipment using T groove) 1a Clamp device (equipment using T groove) 1b Clamp device (equipment using T groove) 2 Moving device 3 Flexible belt 10 Hydraulic hose 12 T groove 14 Connected body 14a Connected body 14b Connected body 15 Drive unit 50 Wiper 51 Wiper 52 Wiper

Claims (1)

[Claims] 1. A T-groove using device with a moving device configured such that a T-groove using device such as a clamp is pushed and pulled by a drive unit through a push-pull connector provided so as to pass through the T-groove. A device using a T-slot with a moving device, wherein the device using a T-slot is provided with a wiper so as to push away dust in the T-slot by the push-pull movement.