JPH0736907Y2 - Pusher device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a pusher device for pushing and transferring various works over two positions.

[Conventional technology]

As such a conventional pusher device, as shown in FIG. 4, a pair of sprockets 3 rotatable about a horizontal axis.
1,32 pusher frames horizontally with a predetermined spacing
The endless chain 34 is wound around both the sprockets 31 and 32, and the pusher member 35 for pushing out the work is continuously connected to the chain link of the endless chain 34 by the rotation of the endless chain 34. There is a device in which the work a supplied to the work transfer starting portion C is pushed and transferred by the rotational movement of the pusher member 35.

[Problems to be solved by the invention]

However, the pusher device having the above structure has the following drawbacks.

That is, in order to vertically bend the path of the pusher member 35 in the chain winding portion of the both sprockets 31 and 32, a wide space is required for the path bending portions D and E, and substantially the entire length of the pusher device is obtained. become longer.

Further, the cover 36 is provided in the rotation range of the pusher member 35.
In order to secure the safety by attaching a pusher member,
Since it is necessary to provide the cover 36 over a wide range of the path inflection portions D and E of 35 and the return path portion of the pusher member 35 on the upper side of the pusher frame, the cost of safety equipment is high.

Furthermore, considering the work movement mode of the pusher member 35 at the path inflection portion E on the transfer end side, the pusher member at the time of path inflection at the sprocket portion is examined.
The peripheral speed of 35 becomes faster than the speed in the work extruding path F before that, and thus the work a is accelerated and extruded in the path inflection portion E, so that the load during this time becomes maximum. Therefore, it is necessary to use this load as a design standard for the drive torque, which increases the capacity of the drive device and increases the cost, and in addition, there is a concern that it may be damaged depending on the transfer target such as a painted work. there were.

[Means for solving problems]

SUMMARY OF THE INVENTION The present invention aims to provide a pusher device that eliminates the above-mentioned conventional drawbacks all at once, and thus the pusher device according to the present invention provides a pair of sprockets rotatable about a horizontal axis in a predetermined horizontal direction. It is provided on both sides of the guide rail with a space between them, and an endless chain is wound around the both sprockets, and further, one link pin of this endless chain is extended to rotatably install two rollers. And a slide member which has a long hole into which one of the engaging tools can be engaged and which can reciprocate along the guide rail over the both sprockets with the rotational movement of the endless chain. ,
The endless chain is pivotally connected to the endless chain via the other engagement tool, whereby the endless chain reciprocates integrally with the slide member as the endless chain rotates, and the endless chain is routed around both sprockets. With the up and down movement of the other engaging tool when bending the other, an elevating member that can move up and down along the guide of the slide member, and the elevating member is hung down continuously through the plate member, thereby, The work pusher moves the work push path of the forward path formed below it in the range of the lower side of the guide rail with the push surface facing from the work transfer start end side to the work transfer end side, and after the work transfer ends, the other Corresponding to the endless chain bending the path around the sprocket, the path bending part is lower than the work extruding path. And then the work extruding tool with its extruding surface facing the work transfer terminal side, moves in parallel with the upper surface of the roller conveyor in a parallel movement state, in the range of the lower side of the return path formed above the work extruding path. The pusher member is configured to push the work at the low speed after moving the work pusher return path to one sprocket and then pushing the work at the work transfer start end.

[Action]

According to the above-mentioned characteristic configuration, the pusher member is moved integrally with the link pin of the endless chain in parallel with the rotation of the endless chain in the range on the lower side of the guide rail along with the link pin.

Thus, by continuously rotating the endless chain, the work supplied to the transfer start side is sequentially transferred toward the transfer end side, and the peripheral speed of the pusher member at the sprocket part in the work extruding path is increased. The work is pushed out by the pusher member at a speed lower than the speed. Further, the work pushing tool is moved in the forward work pushing path formed below the work pushing tool in the range on the lower side of the guide rail, and after the work transfer is completed,
In the parallel movement state of the work pushing tool, the return path formed above the work pushing path is moved in the lower range, so that the pusher member does not move in the upper range of the guide rail as compared with the conventional case. The moving range of the member can be reduced.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show the entire pusher device in which a longitudinal intermediate portion is omitted, and FIG.

In the figure, reference numeral 1 is a pusher frame, which comprises a leg 4 standing on a frame body 3 of a roller conveyor 2 described later and a horizontal guide rail 5 attached to the leg 4, and the guide rail 5 On both horizontal sides of
A pair of sprockets 6 and 7 are provided at a predetermined interval so as to be rotatable around a horizontal axis, and an endless chain 8 is wound around both sprockets 6 and 7.

One link pin 9 of the endless chain 8 is extended, and engaging tools 10 and 11 composed of two rollers are rotatably provided on the link pin 9.

Reference numeral 12 denotes a slide member that can reciprocate along the guide rail 5, an upper slide member 13 that straddles the upper surface of the guide rail 5, a lower slide member 14 that fits into the lower surface of the slide rail 5, and Upper and lower slide members 1
Upper and lower horizontal members 15 and 16 connected to each of 3, 14 and a vertical plate member 1 continuously connected to the upper and lower horizontal members 15 and 16.
Composed of 7 and.

The vertical member 17 of the slide member 12 is formed with a vertically elongated hole 18, and one engaging member 10 provided on the link pin 9 is inserted into the elongated hole 18. is there.

Thus, with the rotational movement of the endless chain 8,
The slide member 12 is reciprocally moved along the guide rail 5 over both the sprockets 6 and 7.

Reference numeral 19 denotes an elevating member, which is provided so as to be vertically movable only along a pair of vertical U-shaped guides 20 and 20 attached to the vertical plate member 17, and a pusher member 21 is continuously provided on a side surface portion thereof. The plate material 22 is attached. The other lifting tool 19 provided on the link pin 9 is engaged and connected to the lifting member 19 and the plate member 22, and the lifting member 19 is moved by the rotation of the endless chain 8. Slide member
The elevating member is reciprocally moved integrally with 12, and as the engaging tool 11 moves up and down when the endless chain 8 bends the path around the sprockets 6 and 7.
19 moves up and down along the guides 20, 20 of the slide member 12, so that the pusher member 21 connected to the elevating member 19 is integrated with the engaging tool 11 connected to the link pin 9. It is designed to move in parallel.

The pusher member 21 is provided with a work pusher 25, which is prevented from coming off by a ring 24, slidably in the work push-out direction at the hanging lower end of a pusher rod 23 hung on the plate member 22, and the work pusher 25 Is provided with a spring 26 for urging the spring to project toward the transfer end side.

Next, the schematic structure of the roller conveyor 2 will be described. In this one, a pair of frame main bodies 3, 3 supported by columns 37 are provided with guide rails 29 of the endless chain 28, and a pair of endless chains 28, 28
Conveyor rollers across their corresponding chain links
30 is pivotally connected, and the work a on the conveyor roller 30 on the upper path side of the roller conveyor 2 is pushed out and transferred by the pusher device described above.

Then, when the endless chain 8 of the pusher device is rotated, the work pushing member 25 of the pusher member 21 is pushed.
On the same locus as the link pin of the endless chain 8 and in parallel with the link pin in the range of the lower side of the guide rail 5, the roller conveyor 2
The work a supplied to the transfer start side of the work is a work pushing tool
25 sequentially transferred toward the transfer end side,
Path inflection part A of the pusher member 21 at the sprocket part
Also, the work a is pushed out from the work transfer start end by the pusher member 21 in a state where the peripheral speed before the work transfer start end is slower than the speed in the work pushing path B, and the reciprocating movement range of the pusher member 21 is covered. It is covered with 27 for safety.

As described above, in this embodiment, one link pin 9 of the endless chain 8 is extended to rotatably provide the engaging members 10 and 11 composed of two rollers, and one of the engaging members 10 is engaged. Since the possible long hole 18 is provided in the slide member 12,
19 reciprocates integrally with the slide member 12 as the endless chain 8 rotates, and as the other engaging member 11 moves up and down around both sprockets 6 and 7, the slide member It is possible to move up and down along the guides 20,20, so that the pusher member 21 can be moved in parallel only within the range of the lower side of the guide rail 5, and the pusher device can be made substantially compact and the cover can be narrow. It is only necessary to provide it in the range, and furthermore, safety equipment can be achieved at low cost.

Although the work a on the roller conveyor 2 is pushed and transferred by the pusher device, it goes without saying that the work a or the like on the belt conveyor or the fixed guide plate can also be the transfer target.

[Effect of device]

As described above, according to the pusher device of the present invention,
With the same trajectory as the link pin of the endless chain, the pusher member is integrated with the link pin and moves in parallel in the range of the lower side of the guide rail along with the rotation of the endless chain, and pushes out and transfers the work. Specifically, the work extruding tool is moved in the outward work extruding path formed below the guide rail in the range of the lower side of the guide rail, and after the work transfer is completed, the work extruding tool is moved in parallel with the lower part. In order to move the return path formed above the work extruding path in the range of the side, a wide space is not required for path inflection at the sprocket part of the pusher member, and the pusher device is substantially installed. It can be made compact.

Moreover, since the pusher member moves in parallel in the lower range of the guide rail, it is only necessary to provide the cover in a narrow range in order to attach a cover to the rotation range of the pusher member for safety. Equipment can be achieved at low cost.

Further, as a work movement mode of the pusher member at the path inflection portion on the transfer end side, since the work is pushed and transferred at a peripheral speed of the pusher member is lower than the speed in the work pushing path, it is coated. There is no need to worry about damaging the work, etc., and the load at this path inflection part is smaller than in the past, so the drive device can be made smaller in capacity and
It is possible to reduce the cost of the pusher device,
Overall, the rational construction that effectively utilizes the movement of the endless chain itself has made it possible to eliminate all the shortcomings of conventional defects.

[Brief description of drawings]

1 and 2 show a pusher device in which a longitudinal intermediate portion is omitted. FIG. 1 is a side view and FIG. 2 is a plan view. FIG. 3 is a vertical cross-sectional view of a main portion, and FIG. 4 is a side view of a pusher device having a conventional structure in which a longitudinal intermediate portion is omitted. 5 ... Guide rail, 6, 7 ... A pair of sprockets, 8 ... Endless chain, 9 ... Link pin, 10, 11 ... Engaging tool, 1
2 ... Slide member, 18 ... Oblong hole, 19 ... Elevating member, 20 ... Slide member guide, 21 ... Pusher member, 22 ... Plate member, 25
... Work pushing tool, A ... Path inflection part, B ... Work pushing path.

Claims (1)

[Scope of utility model registration request] 1. A pair of sprockets rotatable about a horizontal axis are provided on both sides of a guide rail in the horizontal direction at predetermined intervals, and endless chains are wound around the both sprockets. One of the engaging members is formed by extending one link pin so as to be rotatable and one of the engaging members has a long hole into which the endless chain can be rotated. Along with the guide rail, the slide member is reciprocally movable across the both sprockets, and is pivotally connected to the endless chain through the other engaging tool, whereby the endless chain is rotated. The other engaging member for reciprocating integrally with the slide member and for bending the path of the endless chain around both sprockets An elevating member that can move up and down along the guide of the slide member along with the vertical movement and a hanging member that is vertically connected to the elevating member via a plate member, thereby allowing the work pushing tool to be moved in a range below the guide rail. The forward work extrusion path formed below it is moved with the extrusion surface facing from the work transfer start side to the work transfer end side, and after the work transfer is completed, the endless chain bends the path around the other sprocket. Correspondingly, the path inflection part is folded back at a lower speed than the work extruding path, and then the work extruding tool is moved in parallel with the upper surface of the roller conveyor with its extruding surface facing the work transfer end side. In the parallel movement state, in the range on the lower side, one of the return path work extruding tool return path formed above the work extruding path After moving to the sprocket, the pusher device comprising a pusher member which can extrude a workpiece placed on the workpiece transfer start at the low speed.