JPH0724875B2 - Moving device for T-slot equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a T-slot using a T-slot using a moving device for a device using a T-slot, such as a hydraulic clamp device used for fixing a die in a press machine. This is used for a device provided with a connector for pushing and pulling along the T-slot of the equipment used so as to pass through the T-slot.

<Prior Art> As a conventional moving device such as a clamp device, a practical application is as follows.
There is one described in the specification of 78449 (Jitsukai Sho 59-185029). The outline is such that the clamp device movable along the T groove is pushed and pulled by a chain with rollers provided so as to pass through the T groove. Since the clamp device is operated by hydraulic pressure, a hydraulic hose is connected, and the middle of the hydraulic hose is supported by a hanger provided on the chain so as to pass outside the T groove. Therefore, there was a problem that the hydraulic hose complicated the work. For this reason, the applicant of the present application has developed a connecting body of a clamping device for pushing and pulling a clamping device and a pushing and pulling driving part, in which a hydraulic hose and the chain with rollers are almost integrated, and a clamping device using the connecting body. A mobile device was developed. According to this, a part of the connection body is composed of a hydraulic hose, and the connection body is completely accommodated in the T groove at a portion passing through the T groove, that is, the hydraulic hose and the like are prevented from coming out of the T groove. There is.

<Problems to be Solved by the Invention> The connecting body including the hydraulic hose in the moving device of the clamp device passes through the T groove so as not to come out to the outside, but the clamp for fixing the lower mold in the press machine is used. It has been found that when applied to the moving device of the device, a small piece of the scrape gets into the T-groove and hinders the push-pull movement of the clamp device. That is, since the mold is used to some extent and then replaced with another mold, the clamp device moves to the clamp position during use,
In most cases, the connector is pushed out by the connector, and the connector is in the T-groove, and a small piece of the scrape falls on the connector. Therefore, when the clamp device is pulled back to the retracted position for mold change, the movement of the clamp device is not smooth, cannot be moved, or the hydraulic hose is damaged.

<Means for Solving Problems> In the means of the present invention, a T-slot using device such as a clamp is pushed and pulled by a drive unit via a push-pull connector provided so as to pass through the T-slot. In the moving device for a device using T-groove, the connecting body is composed of a chain with rollers having rollers on at least both sides and a liquid pressure hose passing between the rollers on both sides thereof, and a width of closing the opening of the T-groove. The drive part is provided so that the tip end of the flexible belt is connected to the device using the T-groove and the T-groove opening is closed in a state in which the end of the flexible belt is substantially along the joint. It is provided so as to follow the movement of the device using the T-groove.

<Operation> When the T-slot using device is, for example, a mold clamping device in a press machine, the clamping device with the moving device reciprocates along the T-slot between a predetermined clamping position and a retracted position. It clamps at the clamp position, fixes the mold and presses in that state, moves to the retracted position when the mold is changed to the unclamped state, After the replacement, it moves to the clamp position and clamps again. Along with the movement of the clamp device, the tip of the flexible belt is also moved so that the opening of the T groove between the clamp device and the moving device is always closed. The T-groove-using device moves by transmitting the pushing and pulling force through the connecting body, and the flexible belt is not subjected to a large compressive force in the longitudinal direction which causes buckling.
In the T-groove between the clamp device and the moving device, there is at least a push-pull connection body consisting of a chain with rollers and a fluid pressure hose, and in the closed state, small pieces of scrap, etc. Prevent foreign objects from entering.

<Example> A first example is shown in Figs. 1 and 2. In the figure, 1
Is a clamp device, 2 is a moving device, and 3 is a flexible belt.

The clamp device 1 is configured to fix the lower mold of the press machine by supplying and discharging pressure oil via the hydraulic hose 10, and the connecting portion 11 of the hydraulic hose 10 has a width within the T groove 12. It is provided so that it is located in a wide area. 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 a positional relationship with a mold.

The moving device 2 includes a connecting body 14 and a drive unit 15. The connecting body 14 is composed of a chain 33 with rollers having rollers 16 on both outer sides and the hydraulic hose 10.
The hydraulic hose 10 is assembled by connecting 7 and 18 in sequence with a shaft 19. The shaft 19 pivotally supports the rollers 16 on both outer ends and pivotally supports links 17 and 18 on the inner sides thereof, respectively, and a space between both side links is formed in a large diameter part having a diameter slightly smaller than that of the roller 16 and in a radial direction. It has a convex portion 20. Hydraulic hose for large diameter
The 10 holes and the small holes for the cables 13 are
The protrusion 20 is formed at a right angle in the diameter direction passing through the center of the protrusion 19. The end of the connecting body 14 on the clamp device 1 side is
The tip of the hydraulic hose 10 is connected via the metal fitting 21,
Coil spring 22 between the roller and the tip of the chain with roller 22
Is intervened. The base end portion of the coupling body 14 is engaged with the sprocket 23 of the drive portion 15. Two sprockets 23 are fixed to a 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 through the center hole of the shaft 24. The shaft 24 is rotationally driven in the forward and reverse directions by a rotary actuator (not shown). In the retracted state of the clamp device 1 shown in FIG. 1, 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. ing. In the state where the clamp device 1 is moved to the clamp position, the clamp device 1 is pushed out along the T groove 12 by the connecting body 14 from the state of FIG.
As shown in FIG. 2, the inner portion of the T-shaped groove 14 is configured so that the roller 16 is guided to the upper and lower surfaces of the wide portion on the bottom side of the T-shaped groove 12. In the T groove 12, the convex portion 20 of the shaft 19 of the coupling body 14 faces 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, reference numeral 26 designates a main body, which has a mounting portion 28 for bearing the shaft 24 and which is mounted on a bolster 27, and the guide 25 is formed therein.

The flexible belt 3 is a steel belt with rubber drawn, and in this example, has a slightly arcuate cross section and has a width dimension that matches the groove width of the narrow portion on the opening side of the T groove. In addition, the tip end is connected to the clamp device 1 through an L-shaped metal fitting 29 shown by an imaginary line in FIG. The joining position is located in the narrow portion in the T groove 12. The flexible belt 3 extends from the clamp device 1 along the connecting body 14 and has the lid closed in the T 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, the wire 30 is guided by a guide roller 31 provided between the sprockets 23 on both sides, and is connected to one end of a tension spring 32. Edge of sprocket 23
It is fixed to. Therefore, the flexible belt 3 is constantly given a tension, whereby the flexible belt 3 is surely brought into contact with the respective convex portions 20 and the position thereof is regulated. In the figure, 34 is a scraper.

A second embodiment is shown in FIGS. 3 and 4. The main difference from the first embodiment is the configuration for controlling the position of the flexible belt 3a and its position, and the equivalent parts are designated by the same reference numerals and the description thereof is 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. The tip is connected to the clamp device 1a, and the height position of the T groove 12 is at the upper surface of the bolster or the like in which the T groove 12 is provided.
It is a little lower than 40. A guide 41 is provided by enlarging the width of the T groove opening in the T groove 12.
Both side edges of the flexible belt 3a are guided by 41 to close the T groove 12. In this embodiment, the shaft 19a of the connecting body 14a
Since the convex portion 20 is not provided in the T groove 12, the flexible belt 3a does not contact the connecting body 14a in the T groove 12. In the main body 26a of the moving device 2, guides 42 and 43 are provided on the convex side of the bent portion of the flexible belt 3a. 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. Flexible belt
The base end of 3a ends at the end position of the chain of the connecting body 14a and does not give tension. In this embodiment, the flexible belt 3a is guided by a guide over the entire length.

A third embodiment is shown in FIGS. 5 and 6. The main points different from the first embodiment are the configuration for regulating the position of the flexible belt 3b and its position, and the equivalent parts are designated by the same reference numerals and the description thereof is 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 is joined to the clamp device 1b with the arcuate convex surface facing upward, and the height position of the T-groove 12 is a position corresponding to the upper surface 40 of the bolster or the like in which the T-groove 12 is provided. T
The flexible belt 3b closes the opening of the T groove 12 in the groove 12. The main body 26b of the moving device 2 is provided with an entrance guide 44 at a proper position in a straight line portion following the T-slot 12, and there is no special guide in the other portion, and it is bent to connect the sprocket 23 to the connecting body 14b.
Is in contact with the roller 16 at its engaging portion, 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 in the portion engaged with the sprocket 23 is guided by the guide 25 via the flexible belt 3b, and the flexible belt 3b is also guided.

Although not described in the first, second, and third embodiments, when the clamp device is pushed from the side of the connecting body and moves, when the small piece of the scrape or the like is inserted in the T groove, the movement is hindered. It is possible that To deal with such a problem, as shown in FIG. 7 to FIG. 9, wipers 50 and 51 are provided in the clamp device so as to push away foreign matter without being caught. The wipers 50 and 51 may be formed of rubber or synthetic resin and supported by appropriate metal fittings. In the figure, the T-slot 12 has a bottom center with a step and is slightly deeper.
Corresponding to this, the central part projects. The illustrated clamp device 1 is that of the first embodiment, and the T belt 12 is closed by the flexible belt 3 in a state in which the T groove is closed considerably inside the opening edge. A wiper 52 is provided to push away the foreign matter that has entered the upper portion of the T groove during movement. In the drawing, 53 is a lower die, 54 is a U groove of the lower die, and 55 is a proximity switch or a limit switch for detecting the edge of the die.

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 connected to each other when the flexible belts 3 and 3b are wound in the sprocket 23 and straight in the T groove. The flexible belts 3 and 3b have an action of allowing a relative displacement in the lengthwise direction caused by the winding radius being larger than the flexible belts 3 and 14b.

In the first, second and third embodiments, all the moving devices are of the winding type, but in addition to this, a driving part such as a fluid pressure cylinder is formed by forming a slack part in the connecting body on the moving device side. It is conceivable that the connecting body is driven to push and pull the clamp device so as to increase or decrease the amount of the slack portion, and the T groove is closed even for the clamp device with such a moving device. A flexible belt to cover can be provided. In that case, if the structure is such that 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 a tension spring.

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

In the above embodiment, all the equipment using the T-slot has been described as the clamp device, but in addition to this, the jigs, tools, or their holders in the machine tool, etc. are also applied to those having a structure that moves back and forth along the T-slot. it can.

<Effects of the Invention> According to the present invention, the flexible belt is used to close the opening side of the T-groove with respect to the connecting body in the T-groove. It is possible to prevent the connection of the connecting body from interfering with the push-pull movement of the device using the T-slot such as the clamp device and the damage to the fluid pressure hose.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a longitudinal section of a first embodiment of the present invention, FIG. 2 is a partially cutaway front view of the same embodiment, and FIG.
FIG. 4 is a cross-sectional view of the main part of the embodiment in a longitudinal sectional partially broken side view, FIG. 4 is a cross-sectional view of the connecting body and the flexible belt of the embodiment in a T groove, and FIG. 5 is the main part of the third embodiment. FIG. 6 is a first sectional view taken along line AA of the same embodiment, and FIG.
FIG. 8 is a partial vertical cross-sectional side view of the clamp device portion of the embodiment, FIG. 8 is a front view of the portion inside the T groove of FIG. 7, and FIG. 9 is BB of FIG.
FIG. 1, 1a, 1b ... Clamping device, 2 ... Moving device, 3 ...
Flexible belt, 10 ... hydraulic hose, 12 ... T-slot, 14, 14
a, 14b ... Coupling, 15 ... Drive unit.

Claims (2)

[Claims] Claim: What is claimed is: 1. A moving device for a device using T-grooves, wherein a device for using T-grooves such as a clamp is pushed and pulled by a drive unit via a connector for pushing and pulling provided so as to pass through the T-groove. Is composed of a chain with rollers having rollers on at least both sides and a fluid pressure hose passing between the rollers on both sides of the chain, and a tip end portion of a flexible belt having a width for closing the opening portion of the T groove is provided to the device using the T groove. It is provided so as to close the T-groove opening in a state of being coupled and substantially along the connecting body so that the base end side is along the connecting body and is driven by the movement of the T-groove using device by the driving unit. A moving device for equipment that uses T-grooves. 2. The moving device for a device using T-grooves according to claim 1, wherein the flexible belt has a uniform arc-shaped cross-sectional shape.