JPH0824976B2 - Moving device for fluid pressure equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates mainly to a device for pushing and pulling a hydraulic device to move it, for example, a mold clamping device in a press machine and its working position and at the time of moving the mold in and out. It is used when moving to a retracted position.

<Prior Art> As a conventional technology of this kind, there is one as shown in the specification of Japanese Utility Model Application No. 58-78449. The outline is
The clamp device engaged with the T groove is adapted to be moved along the T groove, and a roller chain provided so as to pass through the T groove has one end coupled to the clamp device in the T groove and the other side. Is driven by a drive unit, and a hose for supplying / discharging a pressure fluid to / from the clamp device and a signal cable are connected to the clamp device at one end and the other end is extended along the roller chain. It is supported by a hanger provided at. When the roller chain is in the T-slot, the hanger projects outward from the surface of a slide or the like having the T-slot, and the hose and the cable are supported on the outer side.

<Problems to be Solved by the Invention> In the conventional moving device of the clamp device, since the hose and the cable are supported on the chain by the hanger as described above, the bending of the chain is convex on the hanger side. There is a problem that the device is bulky because the radius of the bend is larger than that of the chain by the amount of the hanger. In general, this type of device is required to be downsized, but particularly when it is provided on a slide of a press machine, there is a strong demand for downsizing because it is a movable part. Further, the hose and the cable supported via the hanger are not necessarily in a firmly supported state, and it is necessary to provide a cover having a guiding function to some extent in a portion other than the T groove, for example, a bending portion, and the cover becomes large. There are also problems. Furthermore, since the bending radius of the hose and the cable is larger than the bending radius of the chain,
There is also a problem that the hose and the cable are easily damaged because the contact portion between the hanger and the hose and the cable is largely displaced relative to each other due to the change in bending and stretching.

<Means for Solving the Problems> The means of the present invention includes a fluid pressure device that performs a predetermined operation by fluid pressure and a roller between shafts supporting both side rollers of a roller chain having rollers on both sides. A through hole is formed in the portion so as to cross the axis, a fluid pressure hose is inserted through the through hole and is held, and a tip end portion is connected to the fluid pressure device, and a proximal end side of the roller chain. A drive part provided to push and pull the connection body, and a guide part of the connection body provided to the roller between the fluid pressure device and the drive part.

<Operation> According to the above means, since the hose can be provided substantially inside the roller chain, the hanger for supporting the hose, which is conventionally required, can be omitted. Of course, the signal cable can also be held with the hose or in parallel. Further, the connecting body can be bent in the bending direction of the roller chain. When the connector is bent or extended, the displacement is not as great as the relative displacement of the contact portion between the conventional hanger and the hose. Further, the connecting body can be formed so as to fit within the wide groove width portion of the T groove on the groove bottom side.

<Embodiment> The structure of the first embodiment is shown in FIGS. In the figure, 1 is a fluid pressure instrument, 2 is a connecting body, 3 is a drive part, and 4 is a guide part.

In this case, the fluid pressure device 1 is a clamp device for fixing the die of the press machine to a slide, a bolster, or the like, and operates by hydraulic pressure. As shown schematically in FIG. 1, the fluid pressure device 1 is moved forward and backward along a T groove 11 provided on the slide mounting base 10a.
With the groove engaging portion 12, the head portion 13 coming out of the T groove 11 is displaced to the T groove side by being supplied with pressure oil and strongly presses the mounting flange portion of the mold. I'm running. In the case of this embodiment, the fluid pressure instrument 1 has a structure in which the proximity switch 1a is supported at a proper position so that the state in which the fluid pressure device 1 approaches the mold and is located at the clamping position can be detected.

The connecting body 2 includes a roller chain 14, a hydraulic hose 15, a coil spring 16 and the like. The roller chain 14, as seen in FIGS. 1 and 3, has rollers 17,18 on both sides, which pivotally support the rollers 17,18 and also provide two sets of links 19,20 for each roller 17,18. The shaft 21 is connected to the inner position.
The shaft 21 at the inner part of the links 19, 20 which are respectively joined on both sides
Is formed in a large diameter portion 21a having an outer diameter slightly smaller than the outer diameter of the rollers 17 and 18, and the hydraulic hose 15 is formed in the large diameter portion 21a.
The insertion hole 22 and the insertion hole 24 of the signal cable 23 are formed. This roller chain 14 is provided with a spring bearing 25a on the shaft 21 at the tip.
Is provided, and the base end of the sprocket 34 of the drive unit 3 is
Is engaged with. The hydraulic hose 15 is provided with a T-shaped groove 11 so that the hydraulic pressure can be supplied to the fluid pressure device 1 through the connecting fitting 25 at its tip.
Is connected to the T-slot engaging portion 12 inside, and the connecting end 27 is connected to the hydraulic relay block 26 whose base end portion is provided in the sprocket.
Connected through. The middle of the hydraulic hose 15 is inserted and retained in the insertion holes 22 formed in the shafts 21 of the roller chain 14. The coil spring 16 is installed in a compressed state between a spring bearing 25 at the tip of the roller chain 14 and a spring bearing 28 provided on the connecting fitting 25.
Is screwed into a cylindrical body 29 having a male screw that abuts on the connection fitting 25 so that the compression state of the coil spring 16 can be adjusted.

The drive unit 3 uses a rotary actuator 30, for example, an air motor (otherwise, an electric motor or a hydraulic motor may be used), and is swingable in the forward and reverse directions. The swing rotation of the actuator 30. The sprocket 34, which is designed to give the fixed sprocket shaft 33 of the sprocket 34 through its shaft 30a and gears 31 and 32,
The roller chain 14 has teeth 35 that engage with the rollers 17 and 18, and is constructed such that two ordinary roller chain sprockets are provided at intervals. That is, the third
As shown in the figure, a hydraulic relay block 26 is provided between the sprockets 34a and 34b and is formed at intervals corresponding to the hydraulic relay block 26 so that each tooth 35 just engages with the rollers 17 and 18. The hydraulic relay block 26 to which the base end of the hydraulic hose 15 is connected is provided with a rotary joint 36 connected to a hydraulic supply / discharge unit (not shown) and a pressure oil passage 37 provided in the sprocket shaft 33. Pressure oil is supplied and discharged, and the internal passage 38 is connected to the hydraulic hose 15. The signal cable 23 reaches the inside of the sprocket 34 from the proximity switch of the fluid pressure device 1 through the insertion hole 24 provided in the roller chain 14, and is covered with the covering flexible tube 23a shown by a virtual line in FIG. In such a state, the sprocket shaft 33 is circulated around the sprocket 34 so that the sprocket can be rocked and rotated, and the sprocket shaft 33 is appropriately guided to the outside.
In FIG. 3, reference numeral 40 denotes a main body, and the sprocket shaft 33 is supported on the side walls 41 and 42 thereof via ball bearings 43. In the figure, reference numerals 44 and 45 denote proximity switches, corresponding to which projections 46 are provided on the sprocket 34 so that the rotational position of the sprocket 34 can be detected. Further, another projection 47 on the opposite side is for the stopper 48 provided on the side wall 41. The side walls 41 and 42 are connected by a bolt 56 via a spacer 55, as shown in FIG.

As shown in FIGS. 1 and 3, the guide portion 4 includes rollers 17, 18 of the roller chain 14 engaged with the sprocket 34.
A surface 50 extending along a straight line and an arc extending downward and extending rightward so as to extend the inner surface of the cover 49 provided so as to circumscribe and a surface at a position where the rollers 17 and 18 are sandwiched therein. Both side members 52 and 53 having a U-shaped cross section having 51 respectively
(See FIG. 3) and a T groove 11 following this. In this case, the T-groove is provided on the slide of the press machine or the base attached to the slide.

The moving device 60 of the fluid pressure device 1 having such a structure is used, for example, six pieces are provided on the slide 10 as shown in FIGS. 5 and 6. In this use example, the main body 40 is provided inside the slide mounting base 10a, and the fluid pressure device 1 shown by the solid line in FIG. 6 is pushed out outward along the T groove 11 by the connecting body 2 in the retracted position. And can be moved to the position indicated by the virtual line. Moving device when replacing the upper die of the press die
A driving device 3 is actuated after the clamp device 60, which is the fluid pressure device 1, is clamped in the upper mold state and then released from the clamped state, and is pushed out by the connecting body 2 and stopped at the retracted position. This stop is performed by the proximity switch 44 detecting the protrusion 46. Then, when the upper die is replaced with another one and positioned, the moving device 60 pressure oil supply portion operates to be in a clamped state. That is, when the connecting body 2 is retracted and the clamp device is moved toward the upper mold, it is detected that the proximity switch 1a of the clamp device is activated and the clamp position is reached, whereby the drive unit 2 is stopped. Then, the pressure oil is supplied to the clamp device, and the clamp device is brought into a clamped state.

To explain the state of the push-pull action by the connecting body 2, the connecting body 2 is a flexible body, but since the roller chain 14 is engaged with the sprocket 34 of the drive unit 3, the forward and reverse rotation of the sprocket 34 is performed. The roller chain 14 is pushed and pulled in accordance with the guide, and at the position deviated from the sprocket 34 and the outer peripheral position of the sprocket 43, the guides 4 restrict the rollers 17 and 18 to move along a predetermined path. The pushing force and the pulling force along the portion are transmitted to the roller chain 14. When the pushing force acts, the tip of the roller chain 14 pushes the fluid pressure device 1 via the coil spring 16. Therefore, the coil spring 16 is adjusted in advance so as to be compressed to such an extent that a reaction force larger than the acting force for pushing and moving the fluid pressure device 1 is generated. When pulling force is applied, coil spring 16
Since the hose 15 is provided with the initial tension, a force for pulling and moving the fluid pressure device 1 is added to the initial tension, and the hose 15 transmits the pulling force to the fluid pressure device 1. .

The provision of the coil spring 16 in the connecting body 2 basically means that the connecting body 2 is wound around the sprocket 34,
This is also because the ratio of the bent portion and the straight portion of the entire length of the connector 2 changes with respect to the pushing. That is, in the retracted state, it is almost bent, and in the extruded state, there are many straight portions. When the connecting body 2 is bent, the roller chain 14 bends at the shaft 21, but the hose 15 has an arc shape. Therefore, if the ratio of the straight part and the bent part changes, the roller chain 14 and the hose 15 will One receives tension and the other receives compression. For example, if the length is the same in a straight line, the length of the hose 15 will be insufficient when it is bent, and the hose 15 will be pulled in a straight line when both ends are in the bent state. It will be compressed too much and meander. A coil spring 16 is provided to prevent such a state.

FIG. 7 shows another example of use of the first embodiment, which is a slide.
The case where the moving device 60 is attached to the upper surface of the flange 61 before and after 10 is shown, and the state shown by the solid line in the figure is the retracted position of the fluid pressure device 1 (clamping device), and the position shown by the imaginary line in the figure,
That is, it moves inward and clamps the upper mold at a desired position.

8 and 9 show still another example of use of the first embodiment, in which the moving device 60a is provided on the side surface of the flange 61 of the slide 10.
Is attached, and the moving device 60a is attached to the front and rear edges of the bolster 62. In this case, the moving device 60a is configured such that both side members 52 and 53, which are a part of the guide portion of the moving device 60, do not have a downward protruding portion in FIG. The moving device 60a provided on the bolster 62 moves the fluid pressure device 1a that clamps the lower die of the press die.

FIG. 10 and FIG. 11 show the second embodiment, and the main difference from the first embodiment is the rotary reactor 30 of the drive unit 2.
Install a at the top of the main body 40 and attach the sprocket shaft 33 to the chain 6
2 and the sprockets 63 and 64. Since the other points are similar to those of the first embodiment, the same parts are designated by the same reference numerals and the description thereof will be omitted. The usage state of the figure is the same as the usage example of FIG.

FIG. 12 shows the third embodiment. In this embodiment, the fluid pressure device 1 is driven by the drive unit 3 via the connecting body 2, but differs from the first and second embodiments in that the drive unit 3 is composed of an air cylinder. The guide portion 4 uses both side members 52a and 53a having a U-shaped cross-section guide groove for the rollers 17 and 18 which is continuous with the T groove 11, and the hose 15 and the external hose are provided between the both members 52a and 53a. A gap 65 through which a connection fitting 71a with 70 and a signal cable (not shown) pass is provided, and the hose 70 is provided at a desired position by forming a slack portion corresponding to the stroke of the air cylinder from the base end side of the roller chain 14. It is connected to relay block 66. The roller chain 14 has a base end via a hose relay fitting 71 and a piston rod 67 of an air cylinder.
And the tip is connected to the fluid pressure instrument 1 via a metal fitting 68.

In the third embodiment, since the connecting body 2 is not wound, the ratio of the straight portion and the bent portion of the connecting body 2 is always the same, and accordingly, the coil spring 16 is provided as in the above embodiment. There is no need to transmit the push-pull force by the roller chain 14
Done in.

<Effect of the Invention> According to the present invention, since the connecting body is constituted by the roller chain and the fluid pressure hose passing through the insertion hole formed in the roller shaft, in some cases, the hose and the signal cable, The connecting body between the driving part and the fluid pressure device can be formed so as to be completely accommodated in the wide part of the groove bottom in the T groove, and the guide part is equivalent to the wide part of the groove bottom of the T groove. Since it is good, since it is not bulky, the entire moving device can be made smaller accordingly. In particular, in applications where the fluid pressure device is a mold clamping device, the connector does not protrude from the T groove formed on the slide-side lower surface or the bolster-side upper surface, which is the mold mounting surface, to the mold mounting surface side at all. Therefore, it does not disturb other work and damage to the hydraulic hose and the signal cable is prevented.

[Brief description of drawings]

1 is a vertical sectional front view of a first embodiment of the present invention, FIG. 2 is a plan view of the first embodiment, FIG. 3 is a sectional view of the AA cross section of FIG. 1, and FIG. FIG. 5 is a rear view of the first embodiment, FIG. 5 is a side view of the press machine showing a usage state of the first embodiment, FIG. 6 is a schematic sectional view taken along the line BB of FIG. 5, and FIG. 7 is a view of the first embodiment. FIG. 8 is a partial vertical sectional front view showing a different use example, FIG. 8 is a side view of a press machine showing a further different use example of the first embodiment, FIG. 9 is a schematic sectional view taken along the line CC of FIG. 8, and FIG. FIG. 11 is a schematic front view of a second embodiment of the invention, FIG. 11 is a side view of FIG. 10, and FIG. 12 is a partially omitted schematic front view of a third embodiment of the invention. 1 ... Fluid pressure device, 2 ... Connection body, 3 ... Drive part, 4 ...
… Guide part, 10 …… Slide, 10a …… Mounting base to slide, 11, 11a …… T groove, 14 …… Roller chain, 15 ……
Hose (hydraulic hose), 17, 18 …… Roller.

Claims (1)

[Claims] 1. A fluid pressure device that performs a predetermined operation by fluid pressure, and an insertion hole is formed in the inter-roller portion of each shaft supporting both side rollers of a roller chain having rollers on both sides so as to cross the shaft. Then, a fluid pressure hose is inserted and held in the insertion hole, and a tip end portion is connected to the fluid pressure device and a connecting body is provided on the base end side of the roller chain so as to push and pull the connecting body. A moving device for a fluid pressure device, comprising: a drive part; and a guide part of the connecting body provided for the roller between the fluid pressure device and the drive part.