JPH083374Y2 - Slide unit - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a slide unit that is linearly driven in a reciprocating manner, and is used for a component conveying device in an automatic assembling device or the like.

[Conventional technology]

2. Description of the Related Art Conventionally, a slide unit that is linearly driven in a reciprocating manner is often used to convey a conveyed object such as a part or a tool in an automatic assembling apparatus.

A conventional slide unit includes a main body housing, a guide rail provided on the main body housing, a movable body supported movably along the guide rail, and a rod attached to the housing in parallel with the guide rail. It is composed of an air pressure cylinder, and by supplying compressed air to the air pressure cylinder, the moving body moves linearly back and forth in the axial direction.
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[Problems to be solved by the device]

However, in the conventional slide unit, since the moving body is fixed to the movement driving member of the pneumatic cylinder, the moving body is guided and moved by both the guide rail and the rod of the pneumatic cylinder, and the moving body is smoothly moved. In order to move to, the guide rail and the rod of the pneumatic cylinder had to be aligned with high precision so that they were parallel to each other.

Therefore, it takes a lot of time in designing, processing, and assembling the slide unit, which has been a factor of increasing the price of the slide unit.

Further, it has been proposed that the moving body and the moving drive member of the pneumatic cylinder are not fixed to each other, but the connecting pin is inserted into the elongated hole provided in the moving drive member from the moving body side. In addition, many parts such as a member for preventing the connecting pin from coming off are required, and it takes time to assemble these parts.

In view of the above problems, the present invention provides a slide unit in which a moving body can move smoothly even if the parallelism between a guide rail and a rod of a fluid pressure cylinder is not high, and which can be easily assembled. It is an object.

[Means for solving the problem]

In order to solve the above-mentioned problems, a slide unit according to the present invention includes a main body housing, a guide rail provided on the main body housing, a movable body movably supported along the guide rail, and a housing. And a fluid pressure cylinder to which a rod is attached in parallel with the guide rail, and the moving body has two engaging surfaces facing each other, and an axial direction of a movement driving member of the fluid pressure cylinder. And both end surfaces are fitted between the two engaging surfaces so as to engage with the engaging surfaces in the axial direction and not to engage with each other in the direction perpendicular to the axial direction.

[Action]

By supplying pressure fluid to the fluid pressure cylinder,
The movement driving member moves back and forth in a straight line.

Since the moving body is engaged with both end surfaces of the moving drive member by the engaging surfaces, it moves in the axial direction together with the moving drive member, but is not engaged with each other in the direction perpendicular to the axial direction. Even if the parallelism between the rod and the rod of the fluid pressure cylinder is poor, it can escape and the moving body moves smoothly.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 is a sectional front view of a slide unit 1 according to the present invention, and FIG. 2 is a sectional view of the slide unit 1 taken along the line II-II.

The slide unit 1 includes a main body housing 11, a guide rail 12 provided on the main body housing 11, and a guide rail 12
A movable body 13, which is movably supported along the main body housing 11, a pneumatic cylinder 14 attached to the main body housing 11 in parallel with the guide rails 12, end blocks 15, 16 attached to both ends of the main body housing 11, and end portions. It is composed of shock absorbers 18 and 19 attached to blocks 15 and 16.

The guide rail 12 has a rectangular cross section, and a bearing member having a large number of balls that circulate and roll by being fitted in V-shaped grooves (not shown) provided on both side surfaces of the guide rail 12.
The moving body 13 is supported by 21 so as to be movable only in the axial direction.

The moving body 13 has a substantially U shape when viewed from the front, and is provided with two engaging surfaces 22a and 22b facing each other.

The pneumatic cylinder 14 is composed of a rod 31 whose both ends are fixed to the end blocks 15 and 16, and a movement driving member 32 which moves along the rod 31.

A piston 33 is attached to the rod 31 substantially at the center in the axial direction.

The movement driving member 32 has a cylinder 34 slidable with respect to the piston 33, and covers 35, 35 attached so as to slidably penetrate the rod 31 and close both end surfaces of the cylinder 34. ing.

Inside the cylinder 34, cylinder chambers 41a and 41b partitioned by the piston 33 are formed. Each cylinder chamber 4
1a and 41b are connected to supply ports 44 and 45 via flow paths 42 and 43. Throttle valves 46 and 47 for speed adjustment are connected to the supply ports 44 and 45, from which compressed air is selectively supplied by a switching valve or the like.

Both end surfaces of the cylinder 34, that is, both end surfaces of the moving drive member 32 are fitted with a slight clearance between the engaging surfaces 22a, 22b of the moving body 13 described above, and thereby the moving drive member 32 and The moving body 13 is axially engaged with each other.

Incidentally, 24 is a screw hole for attaching a load to the moving body 13. Moreover, packing for sealing is attached to the pneumatic cylinder 14 and other required portions.

Next, the operation of the slide unit 1 configured as described above will be described.

The slide unit 1 is a moving body in the state shown in FIG.
Although 13 is at the lower stroke end, when compressed air is supplied from the throttle valve 46 side to the cylinder chamber 41a via the supply port 44 and the flow path 42, the movement drive member 32 is driven to move upward, and with this. The moving body 13 also moves upward and comes into contact with the shock absorber 18 to stop.

On the contrary, when compressed air is supplied from the throttle valve 47 side to the cylinder chamber 41b through the supply port 45 and the flow passage 43, the movement driving member 32 is driven to move downward, and accordingly, the moving body is moved.
13 also moves downward, comes into contact with shock absorber 19 and stops.

During this period, the moving body 13 moves while being guided by the guide rails 12, but the moving body 13 and the movement driving member 32 have an engaging surface.
The guide rails are engaged with each other only in the axial direction by 22a and 22b and not in the direction perpendicular to the axial direction.
Even if the parallelism between the rod 12 and the rod 31 is poor, the deviation due to the error can be escaped by the lateral sliding on the engaging surfaces 22a, 22b, and therefore the moving body 13 moves smoothly.

According to the above-described embodiment, the moving body 13 can move smoothly even if the parallelism between the guide rail 12 and the rod 31 is not highly accurate.

Therefore, the main body housing 11, the guide rail 12, the rod 31 and the like can be easily processed, and moreover, the engaging surfaces 22a and 22b of the moving body 13 can be attached so as to sandwich the movement driving member 32, so that the slide unit 11 Is easy to assemble.

In the above-described embodiment, the structure, shape, size, number, material, etc. of each part such as the main body housing 11, the guide rail 12, the pneumatic cylinder 14, the bearing member 21, etc. may be various other than those described above.

[Effect of device]

According to the present invention, it is possible to provide a slide unit in which a moving body can move smoothly even when the parallelism between the guide rail and the rod of the fluid pressure cylinder is not high, and the assembly is easy.

[Brief description of drawings]

FIG. 1 is a sectional front view of a slide unit according to the present invention,
FIG. 2 is a sectional view of the slide unit 1 taken along the line II-II. DESCRIPTION OF SYMBOLS 1 ... Slide unit, 11 ... Main body housing, 12 ... Guide rail, 13 ... Moving body, 14 ... Pneumatic cylinder (fluid pressure cylinder), 22a, 22b ... Engaging surface, 32 ... Movement drive member.

Claims (1)

[Scope of utility model registration request] 1. A main body housing, a guide rail provided on the main body housing, a movable body supported so as to be movable along the guide rail, and a rod attached to the housing in parallel with the guide rail. The moving body has two engaging surfaces facing each other, and both end surfaces in the axial direction of the movement driving member of the fluid pressure cylinder are the engaging surface and the shaft. A slide unit fitted between the two engagement surfaces so as to engage with each other in the direction and not engage with each other in the direction perpendicular to the axial direction.