JPH06182463A - Flexible body for pushing and pulling implement - Google Patents

Abstract

PURPOSE:To set a hose or an electric wire on a chain without being made bulky. CONSTITUTION:The device is composed of both sides or one side of a fluid pressure hose 1 and an electric wire 19 where an end is joined to an implement to be moved with pushing and pulling, and a chain with roller 2 which has a roller 12 supported as a same axis with respective both outer sides of a link joining part, and where channels 17, 18 are formed respective rollers and both sides or one side of the fluid pressure hose and the electric wire are passed through the channels. Then, the implement pushing and pulling flexible body where the channel is formed so that an axial line of the fluid pressure hose and the electric wire passing the through the channels is formed almost crossing to a roller axial line between rollers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention transmits a pushing force and a pulling force for moving a hydraulic device which is hydraulically operated, and a passage for supplying / discharging a pressure fluid for operating the device and for energization. The present invention relates to a flexible body including an electric wire.

[0002]

2. Description of the Related Art Conventionally, there is a mold clamping device in a press machine which is configured to push and pull along a T groove between a predetermined retracted position and a clamped position. Such a device is disclosed, for example, in Japanese Utility Model Publication No. 2-8573 (Japanese Utility Model Application No. 58-78449). In the device, a chain with rollers is provided between the clamp device and the push-pull drive device so as to advance and retreat through the T groove, and the tip of the chain is connected to the clamp device. Pushing and pulling force of the clamp device is transmitted through the chain. Since the clamp device is hydraulic, the chain supports the hydraulic hose and electric wires. The supporting structure is provided with a hanger which extends from the link of the chain to the outside of the T groove, and supports the hydraulic hose and the electric wire. That is, the hose and the electric wire pass outside the T groove.

[0003]

The conventional flexible body used for the push-pull movement has a bulky problem because the chain and the hydraulic hose or the hydraulic hose and the electric wire are connected by a hanger. For example, in the bent portion, the bending radius of the flexible body is increased by the amount of the hanger. In addition, the hose and the electric wire are located on the opening side of the T groove through which the chain passes. Therefore, the present invention is intended to solve the above problem by providing a hose or an electric wire in a chain so as not to be bulky.

[0004]

SUMMARY OF THE INVENTION The means of the present invention is concentric with both or one of a fluid pressure hose and an electric wire, one end of which is connected to an instrument to be pushed and pulled, and the outside of each of the link joints. The fluid pressure hose having a supported roller, and a passage formed between the rollers, and the fluid pressure hose and / or a chain with rollers on which one or both of the electric wires are installed, the fluid pressure hose passing through the passage. The passage is formed so that the axis of the electric wire substantially intersects the roller axis between the rollers.

[0005]

According to this means, for example, the tip end side of the chain is connected to the instrument side movable along the T groove so that the base end side of the chain is sprocketed into the T groove or
When it is driven so as to be pulled out from the groove, the pushing force or pulling force is transmitted from the chain to the instrument side and pushes or pulls it to move it. The fluid pressure hose and / or the electric wire are almost within the range of the thickness of the chain, and are located inside the T-groove together with the chain in the T-groove portion and do not extend outside the T-groove.

[0006]

EXAMPLE FIG. 1 to FIG. 3 show one example. In the figure, 1 is a hydraulic hose, 2 is a chain with rollers, 3 is a spring, and 4 is the entire flexible body.

The hydraulic hose 1 is provided with connecting fittings 10 and 11 at both ends for connecting to a predetermined pressure oil passage. The connection fitting 10 is connected to, for example, a pressure oil supply / discharge port of a hydraulic clamp device for fixing a mold, and the connection fitting 11 is connected to a pressure oil supply / discharge port provided in a winding tool of the flexible body 4.

The roller-equipped chain 2 has links 14 and 15 alternately and sequentially connected by a shaft 13 having rollers 12 provided at both ends with a space therebetween. The links 14 and 15 are respectively provided inside the rollers 12 on both sides. Is located, and the shaft 13 is formed thick between the links on both sides thereof, and the large diameter portion 16 thereof is formed.
Passage 1 of hydraulic hose 1 that penetrates through the chain in the longitudinal direction
7 and the electric wire passage 18 are bored. The passage 17,
The hydraulic hose 1 and the electric wire 19 are inserted through 18, respectively. The electric wire 19 is provided as needed when electrically detecting the moving position of the hydraulic clamp device, for example. The outer shape of the roller 12 is links 14, 15
Is formed to be slightly larger than the width dimension of, and rolls when advancing and retracting in the groove direction in the T groove 20 shown by an imaginary line in FIG.
It also rolls by engaging with the tooth groove of the sprocket. The chain 2 has a proximal end connected to the winder,
The other end ends at a position close to the clamp device side.

The spring 3 is a coil spring and is arranged on the outer periphery of the end of the hose on the side of the clamp device, which is a hydraulic device, and is provided in a compressed state between the clamp device side and the tip of the chain 2. Reference numeral 21 in the drawing denotes a spring receiver provided on the hydraulic device side, which is in the shape of a cap nut and is screwed into a cylindrical body 22 having a male screw so that the compression state of the spring can be adjusted. The end of the spring 3 on the chain side is the shaft 13 at the tip of the chain.
It abuts on a short cylindrical spring receiver 23 provided in a. In addition,
FIG. 2 shows the shaft 13a at the tip of the chain 2. Only two shafts 18a and 18b are provided in this shaft 13a, but the one that is most convenient for connecting to hydraulic equipment can be selected and used. is there.

The flexible member 4 is, for example, as described above,
It is used between the clamp device and the advance / retreat drive device of the advance / retreat drive device for the hydraulic clamp device, and is extremely effective when the advance / retreat drive device is a winding tool. That is, the flexible body 4 has a length difference between the chain 2 and the hydraulic hose 1 in the rolled-in state and the pushed-out linear state. Is compressed to cause a displacement corresponding to the expansion of the hydraulic hose 1 to prevent an excessive tension from being generated on the hydraulic hose 1. When the hydraulic hose 1 is slackened, the spring 3 expands to meander the hydraulic hose 1. To prevent

Further, in the case where the advancing / retreating drive device for the hydraulic clamp device is not of the retractable type but is driven linearly by an air cylinder or the like, for example, the chain with rollers 2 is bent at a predetermined number of places, and the like. In the configuration in which the straight line portion is stretched so as to form a straight line, and the straight line portion is increased or decreased, the length occupied by the bent portion is always constant.
Since there is no difference in the length of the chain 2 and the spring 3, the spring 3 can be omitted. When the spring 3 is omitted, the tip end side of the chain 2 may be directly connected to the clamp device.

Incidentally, this flexible body is used in a state in which the path for advancing and retracting is restricted by a guide such as a T groove, a sprocket and the like as in the conventional case. Since the sprocket needs to be engaged with the rollers on both sides, respectively, a sprocket having a shape in which two sprocket layers are stacked at a distance is used.

In the above embodiment, the roller-equipped chain 2 has the links 14, 14 and 15, 15 forming a pair on both sides, which are separately formed, but as shown in FIGS. 4 and 5. It may be anything. That is, the roller-equipped chain 2a has links 30 on both sides.
a, 30b, low shafts 31a, 31b on both sides, a connecting portion 34 provided with a hose passage 32 and an electric wire passage 33 as holes.
And the roller shaft 31
a (31b) and the concave portions (35a, 35b) and the convex portions (36a, 36b) on both sides coaxial with each other are coupled to each other (link coupling),
The rollers 12 are attached to both sides. In addition to this, as the chain with rollers, the cross section is U-shaped or quadrangular at the intermediate portion of the links so that the links 14 and 14, 15 and 15 on both sides in the above embodiment are integrated on both sides. It may be configured to have a connecting portion.

[0014]

According to the present invention, it is possible to obtain a flexible body for pushing and pulling a device in which a hydraulic hose or the like is provided within the thickness of the chain. Then, it can be used in a push-pull device of an instrument such as a hydraulic die clamp device, and the effect of miniaturizing the device can be obtained.

[Brief description of drawings]

FIG. 1 is a partially omitted plan view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

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

FIG. 4 is a partially broken partial plan view showing another example of the chain with rollers.

5 is a partial side view corresponding to FIG. 4. FIG.

[Explanation of symbols]

 1 Hydraulic Hose 2, 2a Roller Chain 4 Flexible Body 12 Roller 13, 13a, 31a, 31b Shaft 14, 15 Link 17 Hose Passage 18 Electric Wire Passage

Claims (1)

[Claims] 1. A roller which is coaxially supported on both outer sides of a fluid pressure hose and / or an electric wire, one end of which is connected to an instrument that can be moved by pushing and pulling, and on the outside of each of the link connecting portions. A chain with a roller in which a passage is formed and through which the fluid pressure hose and / or one of the electric wires are installed, and the fluid pressure hose passing through the passage and the axis of the electric wire are between the rollers. A flexible body for pushing and pulling an instrument, wherein the passage is formed so as to substantially intersect the axis of the roller.