JPH077105Y2 - Parallel open / close dustproof chuck - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an apparatus for supplying / discharging parts, improvement of a chuck used in a robot, etc., for a clean room where dust is disliked, and a bad environment where dust is likely to enter. It is characterized in that it can be used for business.

[Prior Art] A chuck having dust-proof measures has been proposed for a robot or the like, but a special structure having a complicated structure and a large size has been proposed, and a compact and simple structure has not been proposed.

[Object of the Invention] The object of the present invention is to obtain a parallel opening / closing chuck having a small size and a simple structure and dustproof measures.

[Structure of the Invention] In order to achieve the above-mentioned object, the present invention has a slide claw protruding from a window hole, and the protruding portion is surrounded by an elastic dustproof body such as a bellows. It has a drive source and a lower opening body, a cap that closes the opening, a slide claw that protrudes from a window hole formed by the body and the cap, and is linearly supported by the body, a slide claw and a window hole. The object is achieved by a parallel opening / closing dust proof chuck which is fitted between the two and which comprises a stretchable dust proof body surrounding the window hole and the protruding portion of the slide claw.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

The cylinder 1 provided with the fluid passage 10 is provided with a center hole of a lower opening, and the upper end of the center hole forms a cylinder chamber 11.

A large piston 2 for closing is slidably fitted in the cylinder chamber 11.

The cylinder chamber 11 communicates with the fluid passage 10, and the outside becomes a flat surface portion 10 '[see FIG. 5], which is sealed and connected to a pipe (not shown).

A small piston 3 is slidably fitted in a center hole 21 which serves as a cylinder chamber of the large piston, and is urged downward by a spring 33. A seal ring 25 is fitted in the annular groove 22 of the large piston 2, and the annular groove 23 is connected to the cylinder chamber 11 via the through hole 24. Then, the pressing pieces 20 and 20 extending downward on both sides and bent downward are fitted between the guide surfaces 14 and 14 to be prevented from rotating.
Moreover, it is guided vertically in FIG.

Further, the small piston 3 is provided with a through hole 31 penetrating vertically.

The lower side of the cylinder 1 has a wide notch 12 on the lower side, into which action levers 4, 4 and slide claws 6, 6 described later are inserted, and side faces 13, 13 guide the slide claws 6, 6. . The cap 7 is fixed to the lower surface 16 of the cylinder 1 with a set screw 72 to close the opening. Reference numeral 17 is a screw hole, and 71 is a meatless portion.

Holes 15 and 15 are provided on both sides of the notch 12 of the cylinder 1 so that the shafts 5 and 5 penetrate therethrough, and both ends are retained by retaining rings 51 and 51. Action lever on this axis 5,5
4 and 4 are rotatably fitted, and guide slots provided on the sliding pieces 60a and 60b of the slide claws 6 and 6 through bearings 52 and 52 on both sides.
61, 61 are slidably fitted.

The action lever 4 has a substantially triangular shape, the outer protruding piece 43 contacts the pressing piece 20, and the inner protruding piece 42 is the lower surface of the small piston 3.
The pin 62 of the slide claw 6 fits in the lower end notch 41 by hitting 32.

The slide claw 6 is formed with a notch portion 64 having the same width as the action lever 4 at the center of the upper side, and the pin 62 is supported here, and the upper side has step portions 65, 65 and the same width as this step portion. Sliding piece 6
0a and 60b are provided so as to be parallel to each other and project in the opposite direction, and guide elongated holes 61 and 61 in the sliding direction are formed in the respective sliding pieces 60a and 60b.

The slide claws 6 are common to the left and right, and if they are opposed (18
The sliding pieces 60a and 60b of each other are overlapped with each other (turned 0 degrees) and come on the protruding step portions 65, 65 so that they can slide with each other.

Then, the action levers 4, 4 are rotatably inserted into the respective cutout portions 64, 64, and the cutout portions 41, 41 of the action levers 4, 4 are inserted.
The pins 62, 62 are engaged with the slide levers 6, 6, and the slide claws 6, 6 are interlocked with the rotation of the action levers 4, 4.

Due to the cylinder 1 and the cap 7, the end face of the notch 12 becomes a window hole, and the pressing piece 20 and the slide claw 6 project from this. The cylinder 1 and the cap 7 are flush with each other around the window hole.

The protruding end of the slide claw 6 is surrounded by a synthetic resin cover 9
91 is fitted and has screw holes at both ends, and is fixed by a set screw 95 to a set shaft 66 supported by the slide claw 6, and the flange portion 93 provided on the cover 9 and the facing surface 67 of the slide claw 6 are the same. It is a plane.

That is, the plane around the window hole on the cylinder 1 side and the same plane on the slide claw 6 side face each other. A bellows body 8 made of an elastic material such as rubber is compressed and fitted on the outer periphery of the cylinder side window hole and the flange portion 93 / opposing surface 67. Both end surfaces 82, 82 of the bellows body 8 are flat surfaces and are in close contact with the opposing flat surfaces. The position of the bellows body 8 is regulated by the jetty 94. Reference numeral 81 is a through hole, and 92 is a hole through which the screw 95 passes.

When pressurized air is sent to the fluid passage 10, the large piston 2 advances downward in FIG. 1, the small piston 3 compresses the spring 33 through the action lever 4 and retracts upward, and the slide claw 6 moves. , 6 are horizontally closed, and the bellows body 8 follows and contracts.

The operation of the slide claws 6 and 6 is that the guide slots 61 and 61 are fitted in the shafts 5 and 5 to the bearings 52 and 52, and the sliding surfaces 63a and 63a are located on the side surfaces 13 and 13.
The sliding surfaces 63b and 63b to the sliding surfaces 63b and 63b, and the sliding surfaces 63c and 63c.
Are guided by the steps 65 and 65, respectively, and move horizontally.

When compressed air is sent to the fluid passage 10 when gripping a component or the like, the large piston 2 advances downward and the small piston 3 retracts in the opposite direction. When the large piston 2 advances, both pressing pieces 20, 20 push the projecting pieces 43, 43 of both action levers 4, 4 to rotate them and push the respective pins 62, 62, so that the slide claws 6, 6 close horizontally.
You can grab parts.

On the other hand, when releasing the parts and the like, when the fluid passage 10 is evacuated (at atmospheric pressure), the operation reverse to the above is performed and the claws 6, 6 are opened. (State of FIG. 1) Then, since the bellows body 8 covers the movable portion projecting from the window hole by this operation, dust can be prevented from the inside, and it can be used in a clean room or the like.

Also, in a bad environment with a lot of dust, the bellows body 8 prevents the invasion of dust, so that it can be used in a bad environment.

Although not shown, the slide claws 6, 6 are fixedly used with fingers for gripping components and the like.

[Modification] The above-described embodiment may be a single-acting type, and a small piston may also be a reciprocating type in which fluid control is performed.

A drive source such as a motor or solenoid may be provided in the cylinder to open and close the claw.

Further, one of the guide slots 61 may have one opening, and the claw 6
If the collar portion 93 is integrally formed, the stop shaft 66 and the cover 9 can be omitted.

[Advantages of the Invention] The present invention has a compact and simple structure with a cap and an expandable dustproof body provided on a chuck whose main body is an opening cylinder, and a flat portion at both ends of the expandable dustproof body. Since the sliding piece is supported on both sides, there is no backlash in the lateral direction, the gripping accuracy is improved, and dustproof measures are taken, so that it is possible to use it in a clean room or in a bad environment without any trouble.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention in a state where a chuck is opened, FIG. 2 is a bottom view thereof, FIG. 3 is a sectional view of a shaft portion, and FIG. ), FIG. 5 is a part view of the cylinder (front, bottom, side), FIG. 6 is a part view of the slide claw (front, side, plane), and FIG. 7 is a part view of the cover (side, front, plane). , Fig. 8 shows the parts of the slide claw (front and side): 1 ... Cylinder, 2 ... Large piston, 3 ... Small piston, 4 ... Action lever, 5 ... Shaft, 6 ... Slide Nail, 7 ... Cap, 8 ... Bellows body, 9 ... Cover,

Claims (1)

[Scope of utility model registration request] 1. A main body having an opening / closing drive source inside and opening downward, a cap closing the opening, a slide claw protruding from a window hole formed by the main body and the cap, and linearly movably supported by the main body. A flat surface is provided around the window hole, and a flat surface is also provided on the side of the slide claw that faces the flat surface. Between the flat surface of the slide claw and the window hole, the window hole and the projecting portion of the slide claw are surrounded, A parallel open / close dustproof chuck fitted with a stretchable dustproof body in close contact with a flat surface.