JPH0834519A - Article conveying device - Google Patents

Abstract

PURPOSE:To reduce the abrasion of guide portions by providing the V-shaped guide portions, circular arc-like insertion grooves having an opening section narrower in width than the diameter, and piano wires having a circular cross section, and providing guides kept in contact with the piano wires. CONSTITUTION:When a pressure fluid is fed or discharged to or from the pressure chamber of a cylinder tube 2, a piston 3 is reciprocated in the cylinder tube 2, a moving piece 4 is moved synchronously with the piston 3, and the moving piece 4 can convey an article. Since guides 9 on both sides of the moving piece 4 are moved in contact with piano wires 12 in insertion grooves on guide portions of guide rails 1, the moving attitude of the moving piece 4 is stable, and the moving piece 4 is smoothly moved. The cross section of the piano wire is made a regular hexagon or a regular octagon, one side is wholly protruded from the insertion groove, a guide face is provided on the protruded side of the piano wire 12 on the guide 9, and the abrasion of the guide portion is reduced. The piano wire 12 on the market can be used as it is, and the cost is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article conveying device driven by fluid pressure.

[0002]

2. Description of the Related Art A guide rail, a mover straddling the guide rail, and ball rolling members made of wear-resistant material provided on the facing surfaces of the guide rails are provided, and a ball inserted between these ball rolling members is provided. A conveying device that guides the movement of the moving element by rolling is, for example, the actual open Sho 63-12661.
It is already known from publication No. 5. The above-mentioned proposed article transporting device guides the movement of the moving element by the balls rolling between the ball rolling members made of a wear-resistant material, and therefore has the advantage that the moving surface is less worn and has a longer life. Since it is necessary to provide an arcuate rolling surface on which a ball rolls on a ball rolling member made of a wear-resistant material, machining is troublesome and the ball rolling member becomes expensive. There is a problem that becomes.

Further, when there is an obstacle in the moving process of the carrying device, it is necessary to bend the guide rail in the horizontal direction and / or the vertical direction in order to avoid the obstacle, but the above-mentioned proposal has been made. In the transfer device, it is difficult to bend the guide rail because the ball rolling member has a direction of bending due to the arcuate rolling surface, and if the guide rail is forcibly bent, the guide rail will be distorted and the mover will move. There is a problem that they cannot move smoothly.

[0004]

SUMMARY OF THE INVENTION The present invention focuses on the fact that a piano wire formed by drawing is inexpensive, has abrasion resistance, and has relatively good cross-sectional accuracy. An object of the present invention is to provide an article transporting device which is inexpensive and has a small sliding portion wear.

[0005]

In order to solve the above problems, the present invention provides a guide rail, a cylinder tube attached to the guide rail, a piston movable in the cylinder tube, and the cylinder tube. In an article transporting apparatus including a moving element that moves in synchronization with the piston, the guide rails are formed on both sides in the longitudinal direction of the V-shaped guide portions and on opposite surfaces of these guide portions, respectively. In addition, the opening is provided with a circular insertion groove having a width smaller than the diameter, and a piano wire having a circular cross-section inserted by protruding a part of the outer peripheral surface into these insertion grooves. In addition, a guide that abuts on these piano wires is provided.

Further, in order to solve the same problem, the guide on one side of the moving element in the article transporting device is an adjusting guide having an eccentric shaft for adjusting a gap with a piano wire. There is.

Further, in order to solve the same problem, in these article conveying apparatuses, the insertion groove is formed into a substantially square section having a narrower opening than the diagonal line, and the insertion groove has a square section piano wire. And one of its corners is projected to the outside; and the insertion groove has a cross section of a substantially regular hexagon or regular octagon narrower than the width between a pair of opposite sides of the opening, and these insertion grooves are The present invention is characterized in that a piano wire having a regular hexagonal or regular octagonal cross section is provided such that all of its one side projects from the insertion groove, and the guide has a guide surface that comes into surface contact with the projecting sides of these piano wires.

Further, in order to solve the same problem, these article conveying apparatuses are characterized in that a plurality of guide rails and cylinder tubes are connected in the axial direction.

[0009]

When the pressure fluid is supplied to and discharged from the pressure chamber of the cylinder tube defined by the piston, the piston reciprocates in the cylinder tube and the mover moves in synchronization with the piston. A desired article can be conveyed by. In this case, the guides provided on both sides of the mover move while abutting the piano wire inserted in the insertion groove of each surface of the guide portion of the guide rail, so that the mover has a stable movement posture and moves smoothly. . Also,
The piano wire has a small wear on the guide portion and has a long service life. Moreover, since a commercially available piano wire can be used as it is, it is possible to make a carrier device having a long service life inexpensive. Since the width of the opening of the above-mentioned insertion groove is a truncated circle shape or a substantially square shape smaller than the diameter or the length of the diagonal line, the piano wire having a circular cross section or a square shape inserted into these insertion grooves should come out from the insertion groove. There is no.

Also, since the guide on the side of the moving element can adjust the gap with the piano wire by the rotation of the eccentric shaft, the manufacturing error between them can be absorbed.

Further, the cross section of the piano wire is made into a regular hexagon or a regular octagon, and one side thereof is entirely projected from the insertion groove, and the guide is provided with a guide surface which comes into surface contact with the projecting side of the piano wire. Can be further reduced.

Further, since the cross section of the piano wire is circular, square, regular hexagonal or regular octagonal, and has no directivity for bending in the horizontal direction and / or the vertical direction,
Unlike the reinforcing member having a complicated cross-section such as a non-regular polygon, the guide rail can be bent easily and is not distorted by the bending.

Furthermore, since a plurality of guide rails and a plurality of cylinder tubes are connected in the axial direction, it is possible to easily form a long conveying device and further reduce the cost.

[0014]

1 to 5 show a first embodiment of the present invention, in which this article transporting apparatus has a guide rail 1 and a cylinder tube 2 having a desired length, and a cylinder tube 2.
It is provided with a piston 3 movable inside and a mover 4 straddling the cylinder tube 2 and movable along the outer peripheral surface thereof. The guide rail 1 has a protrusion 7 having a mounting groove 6 with a narrow opening in the longitudinal direction of the upper surface, bypass holes 8 for fluid piping in the middle longitudinal direction, and V in the longitudinal direction of both side surfaces. .. (see FIG. 3), each of which has a character-shaped guide portion 9, 9 and a part of which is opened in the facing surface of the guide portion 9, 9 (see FIG. 3), and a fixing groove 11 in the longitudinal direction of the lower surface. , Is entirely formed integrally from an extruded material of aluminum or aluminum alloy. The insertion groove 10
The opening is formed in a circular cross section having a width smaller than the diameter, and a piano wire 12 having a circular cross section is inserted into each insertion groove 10 with a part of the outer peripheral surface protruding from the opening. These piano wires 12 may be integrally embedded at the time of extruding the guide rail 1, or may be inserted into the fitting groove 10 after the guide rail 1 is molded and at least both ends or desired portions may be fixed by appropriate means. Good.

The cylinder tube 2 has a mounting portion 13 having a groove at its wide end portion in the longitudinal direction of the outer peripheral surface, and is integrally formed by extruding a non-magnetic material.
It is assembled to the guide rail 1 by loosely fitting the mounting portion 13 into the mounting groove 6 of the guide rail, and due to the gap between the mounting groove 6 and the mounting portion 13, the guide rail 1 is mounted on a surface substantially orthogonal to the longitudinal direction. On the other hand, it is slightly movable. The piston 3 includes a magnet coupling 14 in which annular magnets and yokes are alternately arranged in the axial direction, and annular adapter plates 15 and 15 on both sides of the axial direction.
A piston packing 18 configured to be attached to a rod 17 by nuts 16 and 16 is fitted in a packing groove provided on the outer peripheral surface of each adapter plate 15 so as to slide and seal on the inner peripheral surface of the cylinder tube 2. There is.

The mover 4 has a hollow body 20 whose both ends straddling the cylinder tube 2 are close to the projecting portion 7,
The body includes a magnet coupling 21 and adapter plates 22, 22 on both sides in the axial direction, which are mounted in the body by retaining rings 23, 23 so as to be slightly movable in the axial direction. In the same manner as above, a ring-shaped magnet with a part of the outer periphery cut out and yokes are alternately arranged in the axial direction. Further, scrapers 24, 24 that are in sliding contact with the outer peripheral surface of the cylinder tube 2 are fitted in the mounting grooves provided in the adapter plates 22, 22.

A plurality of the bodies 20 (4 in the illustrated example) are provided on the upper surface for mounting articles (not shown) such as works.
, And fixing guide rollers 25, 25 having screw holes 20a, ..., Which constitute a fixing guide on one side of the lower surface, and an adjusting guide roller 26, which constitutes an adjusting guide on the other side.
26 are attached respectively. The fixing guide roller 25 includes a shaft 29 fixed to the body 20 with a mounting screw 28, and a roller 30 rotatably attached to the tip of the shaft 29. The outer peripheral surface of the roller 30 has a piano wire 1
It is in contact with the outer peripheral surfaces of 2 and 12 (see FIGS. 2 and 3). The adjustment guide roller 26 shown in detail in FIGS. 4 and 5 includes an eccentric cap 32, a hole 33a and a shaft 33 whose axis is eccentric with respect to the outer diameter of the eccentric cap 32, and the shaft 33. A roller 34 is rotatably attached to the tip of the eccentric cap 32. By rotating the eccentric cap 32, the gap between the roller 34 and the piano wires 12, 12 can be adjusted. It is fixed to the body 20 by 28 (see FIG. 1).
The rollers 30 and 34 are formed of a wear resistant material.

In the first embodiment, the mounting portion 13 of the cylinder tube 2 in which the piston 3 is inserted is loosely fitted in the mounting groove 6 of the guide rail 1, and the moving element 4 is mounted on the outer peripheral surface of the cylinder tube 2. It is assembled by bringing the guide rollers 25, 25, 26, 26 installed and attached to the mover 4 into contact with the outer peripheral surface of the piano wire 12, ... Of the guide rail 1, and between the mounting groove 6 and the mounting portion 13. Due to the gap of, the cylinder tube 2 is in a plane substantially orthogonal to the longitudinal direction,
The guide rail 1 and the mover 4 are mounted so as to be slightly movable. Further, even if there is a manufacturing error between the mover 4 and the guide rail 1, the adjusting guide roller 26,
By rotating the eccentric caps 32, 32 of 26, the rollers 30, 30 and 34, 34 are moved to the piano wire 12,
.. can be brought into contact with the outer peripheral surface, so that the mover 4 is stably supported and moved by the guide rail 1. In this case, since the cylinder tube 2 can be slightly moved with respect to the guide rail 1 and the mover 4, the cylinder tube 2 moves the piano wires 12 ,.
-There is no obstacle to the contact with the outer peripheral surface.

In the first embodiment, when compressed air is supplied to and discharged from the pressure chambers on both sides of the piston 3 through a port (not shown), the piston 3 reciprocates in the cylinder tube 2 and the piston 3 and the mover 4 move. Magnetic coupling 1 installed in
The mover 4 reciprocates in synchronization with the piston 3 by the suction force of 4, 21. Therefore, a desired article can be conveyed by the mover 4. In this case, mover 4
Are rollers 30, 30, 34, 34 provided on the moving element 4.
Since it is supported by the piano wire 12, ..., It moves in a stable posture along the guide rail 1 and the cylinder tube 2. Therefore, the moving posture of the mover 4 is stable regardless of the setting posture of the work.

The guide rail 1 includes a piano wire 12 having a circular cross section inserted in an insertion groove 10 provided in each surface of the guide portions 9 and a guide roller 2 provided in a moving member 4.
5,25,26,26 rollers 30,30,34,34
Since the guide rail 1 abuts on the guide rail 1, wear of the guide portion is small even if the guide rail 1 is made of a relatively soft material such as aluminum or its alloy, so that the conveying device can have a long life. Further, since the piano wire 12 can be a commercially available one, it is inexpensive, and the cross-section accuracy is good, so that the movement of the mover 4 can be accurately guided. Furthermore, in the above-mentioned transport device, the guide rail and the cylinder tube may have to be bent in the horizontal direction and / or the vertical direction in order to avoid obstacles depending on the installation location. In the first embodiment, since the piano wire 12, ... Has a circular cross section and has no directivity for bending, the guide rail 1 can be easily bent without being distorted.

FIG. 6 shows a second embodiment of the present invention. On each surface of the guide portions 37, 37 (only one is shown) of the guide rail 36 of the second embodiment, the width of the opening is substantially narrower than the diagonal line. A square insertion groove 38, ... Is formed, and a piano wire 39 having a square cross section is formed in each of the insertion grooves 38 ,.
However, it is inserted with one of the corners protruding from the opening. The other configuration and operation of the second embodiment are the same as those of the first embodiment, and thus detailed description is omitted. In this case, if the crossing angle of the pair of surfaces of the guide portion 37 is set to a right angle as shown in the drawing and each side of the piano wire 39 having a square cross section is made to coincide with the horizontal plane and the vertical plane of the guide rail 36, Bending of 36 in the horizontal and vertical directions is easier.

FIG. 7 shows a third embodiment of the present invention. The guide portions 42, 42 in the guide rail 41 of the third embodiment.
In the insertion groove 43, ... Provided in only one side, a piano wire 44 having a regular hexagonal cross section is inserted in a state in which one side of the piano wire is projected from the opening to the outside of the insertion groove 43. The width of the opening of each insertion groove 42 is made shorter than the width between two opposite sides, whereby the insertion groove 43 of the piano wire 44 is inserted.
Is prevented from getting out of the vehicle. In addition, the roller 30,
34 has a rolling surface that comes into surface contact with the protruding side of each piano wire 44 ,. Another structure and operation of the third embodiment is that the protruding sides of the piano wires 44, ...
The fourth embodiment is the same as the first embodiment except that the rolling surfaces 30a and 34a of No. 4 are in surface contact with each other.

FIG. 8 shows a fourth embodiment of the present invention. The guide portions 47, 47 in the guide rail 46 of the fourth embodiment.
In the insertion grooves 48, ... Provided in only one side, piano wires 49, ... With a regular octagonal cross section are inserted in a state in which all of one side of the piano wire 49 projects outward from the opening. The width of the opening of the piano wire 48, ... Is made smaller than the width between the two opposite sides, so that the insertion groove 4 of the piano wire 49 ,.
8 is prevented from slipping out. Since the other structure and operation of the fourth embodiment are substantially the same as those of the third embodiment,
Detailed description is omitted.

When the length of the transfer device is long, it is necessary to connect a plurality of guide rails and cylinder tubes each having a desired length. 9 and 10 show a guide rail 51 and a cylinder tube 52 formed to have a desired length.
5 shows a fifth embodiment of the present invention in which a plurality of are connected. The guide rails 51, 51 are attached by bolts (not shown) to the base 53 inserted into the fixing grooves 11, 11 provided on the lower surface, and project near the connecting portion as shown in FIG. The part 7 is not provided. The cylinder tubes 52, 52 have their end surfaces abutted via packing (not shown), and the connection brackets 55, 55 abutted on both sides of the bases of the mounting portions 13, 13 are bolts 56, passing through the brackets. .. are tightened by nuts 57, ..., and bolts 58 that pass through the grooves (see FIG. 2) of the mounting portion 13 are tightened by nuts 59.
The bolt 58 and the nut 59 prevent the axial displacement. Reference numeral 60 in FIG. 10 is a plate that suppresses the opening of the circular magnet coupling 21 provided on the child 4 by transfer.

Since the other structure and operation of the fifth embodiment are the same as those of the first embodiment, the same reference numerals are given to the same main parts in the drawings, and detailed description thereof will be omitted. Further, the piano wire attached to the guide rail 51 is not limited to the illustrated piano wire 12 having a circular cross section, but the piano wire 39 having a square cross section, the piano wire 44 having a regular hexagonal cross section, or the piano wire having a regular octagonal cross section. Of course, line 49 could be used. In the fifth embodiment, a plurality of guide rails 51 and cylinder tubes 52 having a desired length are provided.
Since they are connected to each other in the axial direction, it is possible to easily form a long conveying device and further reduce the cost.
The guide rails 51 do not have to be continuous over the entire length of the moving element 4 in the moving direction, and may be connected by a piano wire with a slight gap therebetween. It is easy to bend.

Although the piston and the mover in each of the above-mentioned transfer devices are constructed so as to move in synchronization with each other by the magnetic coupling, the transfer device of the present invention is not limited to the one using the magnetic coupling. Alternatively, the piston and the mover may be a well-known mechanical coupling means that is coupled by a coupling body that passes through a groove having a narrow width provided in the cylinder tube.

[Brief description of drawings]

FIG. 1 is a partially longitudinal front view showing a main part of a first embodiment.

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

FIG. 3 is an enlarged view showing a contact state between a piano wire and an adjustment guide.

FIG. 4 is a half-part longitudinal sectional view of an adjusting guide roller.

FIG. 5 is a plan view of the same.

FIG. 6 is an enlarged view showing a main part of the second embodiment.

FIG. 7 is an enlarged view showing a main part of the third embodiment.

FIG. 8 is an enlarged view showing a main part of the fourth embodiment.

FIG. 9 is a front view showing the main parts of the fifth embodiment.

FIG. 10 is a sectional view taken along line B-B of FIG.

[Explanation of symbols]

 1, 36, 41, 46, 51 Guide rail 2, 52 Cylinder tube 3 Piston 4 Mover 9, 37, 42, 47 Guide part 10, 38, 43, 48 Insertion groove 12, 39, 44, 49 Piano wire 25 Fixed Guide roller 26 Adjusting guide roller 30, 34 roller

Claims (5)

[Claims] 1. A guide rail, a cylinder tube attached to the guide rail, a piston movable in the cylinder tube, and a mover that moves along the cylinder tube in synchronization with the piston. In the article transporting device, the guide rails are formed on both sides in the longitudinal direction of the V-shaped guide portions, and the guide rails are formed in the facing surfaces of the guide portions, respectively. A groove and a piano wire having a circular cross section inserted into the insertion groove by projecting a part of the outer peripheral surface thereof, and guides that come into contact with these piano wires are provided on both sides in the longitudinal direction of the mover. An article conveying device characterized by the above. 2. A guide according to claim 1, wherein the guide on one side of the mover is an adjusting guide having an eccentric shaft for adjusting a gap with the piano wire. Article transport device. 3. The insertion groove is formed into a substantially square section having a narrower opening than the diagonal line, and a piano wire having a square section is provided in each of the insertion grooves, one corner of which is projected to the outside. The article transporting device according to claim 1 or 2, characterized in that. 4. The insertion groove has a cross section of a substantially regular hexagon or a regular octagon whose width of the opening is narrower than the width between a pair of opposite sides,
A piano wire having a regular hexagonal or regular octagonal cross section is provided in each of these insertion grooves by projecting one side of the piano wire from the insertion groove, and the guide has a guide surface that comes into surface contact with the protruding side of these piano wires. The article conveying apparatus according to claim 1 or 2, characterized in that. 5. The article conveying apparatus according to claim 1, wherein a plurality of guide rails and cylinder tubes are connected in the axial direction.