JP2014015294A - Meshing chain type advance-retreat operation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a meshing chain type advance-retreat operation device where deflection and buckling at an engagement part are prevented by a simple structure and a workpiece existing on the advance-retreat path of a projected part from the guide of a contacting part is moved by being pressed with the projected part of the contacting part corresponding to the advance-retreat stroke of the contacting part.SOLUTION: A meshing chain type advance-retreat operation device 100 comprises groove-like guide parts (140) locating on the advance-retreat path of meshed parts 120G where a pair of meshing chains 120 are meshed and guiding the meshed parts 120G to an advance-retreat direction S by forming groove-shapes, and a contacting part 130 which is attached to an advance side in the advance-retreat direction of the meshed parts 120G and which is in contact with a workpiece W. A projected part 131 which is at least a part of the contacting part 130 is more projected to a top side in a vertical direction U than the top side end part 141b of the groove-like guide parts (140) in the vertical direction U of grooves 141 at the groove-like guide parts (140).

Description

  The present invention is used in manufacturing equipment in various manufacturing fields, transport equipment in the transport field, nursing care equipment in the medical and welfare field, stage equipment in the art field, etc. Relates to the device.

2. Description of the Related Art Conventionally, a meshing chain type advance / retreat operation device having a pair of meshing chains that transmit power of a drive motor and advance / retreat in a forward / backward direction is known (for example, Patent Document 1).
A conventional meshing chain type advance / retreat operation device has a chain guide mechanism that guides a meshing portion in which a pair of meshing chains mesh with each other to be integrated.
This chain guide mechanism includes a chain guide roller that is attached to a pair of meshing chains, and a chain guide vertical member that has a lower end attached to a casing at the lower part of the apparatus and moves the chain guide roller up and down in the vertical direction in contact. It consisted of rails.

JP 2009-280365 A

  However, in the conventional meshing chain type advance / retreat operation device described above, the chain guide rollers of the chain guide mechanism are attached to the pair of meshing chains, and these many chain guide rollers come into contact with the long chain guide vertical rail. Due to the complicated structure, problems such as interference between rollers occur, and the meshing part of the pair of meshing chains is curved without fully exhibiting the guide function, so that the work cannot be reliably moved to a predetermined position. There was a problem.

  Therefore, the present invention solves the problems of the prior art as described above, that is, the object of the present invention is to prevent the engagement portion from bending and buckling with a simple structure and to guide the contact portion. It is an object of the present invention to provide a meshing chain type advance / retreat operation device that pushes a workpiece on an advancing / retreating path of a portion protruding from the abutting portion and moves the workpiece in accordance with the advancing / retreating stroke of the abutting portion.

  The invention according to claim 1 is a meshing chain type advance / retreat operation device having a pair of meshing chains that transmit / receive power of a driving motor and advance / retreat in a forward / backward direction, on an advancing / retreating path of a meshing portion engaged with the pair of meshing chains. And a groove-shaped guide part that forms a groove shape and guides the meshing part in the advancing and retreating direction, and a contact part that is attached to the advancing and retreating direction advancing side of the meshing part and abuts against the workpiece. At least a part of the part is provided so as to protrude from the top end of the groove-shaped guide part to the top-and-bottom direction in the top-to-bottom direction of the groove of the groove-shaped guide part. is there.

  In the invention according to claim 2, in addition to the configuration of the meshing chain type advance / retreat operation device according to claim 1, a plurality of the groove-shaped guide portions are provided at intervals in the advance / retreat direction. Thus, the above-described problem is further solved.

  According to a third aspect of the present invention, in addition to the configuration of the meshing chain type advance / retreat operation device according to the first or second aspect, the meshing chain includes a pair of internal tooth plates spaced apart in the chain width direction. A pair of external teeth plates arranged on the outside of the pair of internal teeth plates, a bush press-fitted into the bush holes of the pair of internal teeth plates, and a pair of external teeth that are rotatably inserted into the bushes A connecting pin that is press-fitted into the pin hole of the plate and connects the internal tooth plate and the external tooth plate, and the extending direction of the connecting pin is the same as the width direction of the groove of the groove-shaped guide portion The above-described problems are further solved.

  In the invention according to claim 4, in addition to the configuration of the meshing chain type advance / retreat operation device according to claim 3, the groove-shaped guide portions are disposed on both side surfaces inside the groove of the groove-shaped guide portions. And the ends of the connecting pins of the pair of meshing chains project outward from the outer tooth plate in the width direction of the chain, and the projecting guide portion extends in the vertical direction of the groove. In the meshing portion of the pair of meshing chains, the above-described problem is further solved by being disposed between the end of the coupling pin of one meshing chain and the end of the coupling pin of the other meshing chain. Is.

  The meshing chain type advance / retreat operation device of the present invention has a pair of meshing chains that transmit the power of the drive motor, so that the tip side of the pair of meshing chains can advance and retreat in the advancing / retreating direction, as described below. A specific effect can be produced.

According to the meshing chain type advance / retreat operation device of the first aspect of the present invention, the groove which is disposed on the advancing / retreating path of the meshing portion engaged with each other of the pair of meshing chains to form the groove shape and guide the meshing portion in the advancing / retreating direction. And a contact portion that is attached to the advancing and retreating direction advance side of the meshing portion and contacts the workpiece, and at least a part of the contact portion is groove-shaped in the vertical direction of the groove of the groove-shaped guide portion. Since it is provided so as to protrude from the top end of the guide portion toward the top and bottom in the vertical direction, the meshing portions of the pair of meshing chains are guided in the forward and backward directions along the groove of the groove-shaped guide portion, so that the structure is simple. Therefore, it is possible to prevent the meshing portion from being bent or buckled.
Further, since at least a part of the abutting portion protrudes from the groove-shaped guide portion and moves by the entire length of the advancing / retreating stroke, the workpiece on the advancing / retreating path of the protruding portion of the abutting portion is projected from the abutting portion. And can be moved corresponding to the advance / retreat stroke of the contact portion.

  According to the interlocking chain type advance / retreat operation device of the invention according to claim 2, in addition to the effect of the invention according to claim 1, a plurality of groove-shaped guide portions are arranged at intervals in the advance / retreat direction. As a result, the meshing portions of the pair of meshing chains are guided in the advancing and retreating directions at a plurality of points and the meshing portions have a stable posture, so that the degree of freedom of arrangement and spacing of the groove-shaped guide portions can be increased.

  According to the meshing chain type advance / retreat operation device of the invention according to claim 3, in addition to the effect exerted by the invention according to claim 1 or claim 2, the pair of internal teeth in which the meshing chain is spaced apart in the chain width direction A pair of external tooth plates disposed outside the pair of internal tooth plates, a bush press-fitted into the bush holes of the pair of internal tooth plates, and a pair of external teeth that are rotatably inserted into the bushes. It has a connecting pin that is press-fitted into the pin hole of the tooth plate and connects the inner tooth plate and the outer tooth plate, and the extending direction of the connecting pin is the same as the width direction of the groove of the groove-shaped guide portion. In general, the secondary moment of inertia in the direction in which the connecting pin extends in the meshing portion of the pair of meshing chains is perpendicular to the direction in which the connecting pin extends and advances and retracts. The engagement portions of the pair of meshing chains are smaller and tend to bend and buckle easily in the extending direction of the connecting pin, and the positions of the side walls on both sides of the groove of the groove-shaped guide portion are on both sides in the extending direction of the connecting pin with respect to the engaging portion. Therefore, it is possible to reliably prevent the meshing portion from being bent or buckled at both side walls of the groove of the groove-shaped guide portion.

  According to the meshing chain type advance / retreat operation device of the invention according to claim 4, in addition to the effect of the invention according to claim 3, the groove-shaped guide portions are provided on both side surfaces inside the groove of the groove-shaped guide portion. And a pair of meshing chain end portions of the connecting pins projecting outward from the outer tooth plate in the chain width direction, and the projecting guide portions are paired in the vertical direction of the groove. In the meshing part of the meshing chain, the grooved portion of the grooved guide part is arranged in the vertical direction by being arranged between the end of the coupling pin of one meshing chain and the end of the coupling pin of the other meshing chain. Since the relative movement between the meshing portion of the pair of meshing chains and the groove-shaped guide portion is restricted and the relative positional relationship is determined, the pair of groove-shaped guide portions with respect to the groove-shaped guide portion in the vertical direction is determined. The meshing part of the meshing chain It is possible to prevent.

The schematic perspective view which shows the meshing chain type | formula advance / retreat operation apparatus of 1st Example of this invention. The disassembled perspective view and perspective view of a pair of meshing chain used for a meshing chain type advance / retreat operation device. The figure seen from the Y-axis direction which shows operation | movement of the meshing chain type advance / retreat operation device of 1st Example of this invention. The schematic perspective view which shows the meshing chain type | formula advance / retreat operation apparatus of 2nd Example of this invention. The figure seen from the Z-axis direction which shows operation | movement of the meshing chain type | formula advance / retreat operation apparatus of 2nd Example of this invention. The perspective view which shows the groove-shaped guide member of the meshing chain type | formula advance / retreat operation apparatus of 3rd Example of this invention, and the figure seen from the X-axis direction.

  The present invention relates to a meshing chain type advance / retreat operation device having a pair of meshing chains that transmit / receive power of a drive motor to advance / retreat in a forward / backward direction, and is provided on a forward / backward path of a meshed portion of a pair of meshing chains. A groove-shaped guide portion that guides the meshing portion in the advancing and retreating direction, and a contact portion that is attached to the advancing and retreating direction advancing side of the meshing portion and abuts against the workpiece, at least a part of this abutting portion is The groove-shaped guide portion is provided so as to protrude from the top end of the groove-shaped guide portion to the top-and-bottom direction in the top-to-bottom direction of the groove-shaped guide portion, thereby preventing bending and buckling of the meshing portion with a simple structure. Any specific embodiment may be used as long as the workpiece on the advancing / retreating path of the portion protruding from the guide of the abutting portion is pushed and moved by the protruding portion of the abutting portion. .

For example, the groove-shaped guide part may be constituted by an integral member or may be constituted by a plurality of members.
Further, the configuration of the groove formed by the groove-shaped guide portion only needs to have a side surface and a bottom surface that constitute the groove, and a gap between members may be provided on the side surface and the bottom surface that constitute the groove. The side surface and the bottom surface to be operated may be separated.
Moreover, the attachment position of the contact portion may be on the engagement portion advance side, and may be attached to the end portion of the engagement portion on the advance side in the advance / retreat direction, or may be in the vicinity of this end portion.
Moreover, the drive sprocket which transmits the motive power of a drive motor to a meshing chain may be arrange | positioned 1 each on both sides of a pair of meshing chain, and may be arrange | positioned one side.
Further, the meshing chain may have a multi-row structure in which inner link units composed of inner tooth plates arranged in a pair on the left and right in the chain width direction are connected in a plurality of rows in the chain width direction, or have a single row structure. It may be.
Further, the meshing chain may be a meshing chain configured by connecting a large number of internal and external tooth plates with only connecting pins without arranging the bushing, and the drive sprocket is engaged with the bush or the roller loosely fitted to the bushing. It may be driven together.

  The specific shapes of the plates such as the internal tooth plate and the external tooth plate used in the meshing chain type advance / retreat operation device of the present invention are made by integrating the same type of plates facing each other into a single unit and disengaging them. Any shape may be used as long as it branches off.

Hereinafter, a meshing chain type advance / retreat operation device 100 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3.
Here, FIG. 1 is a schematic perspective view showing a meshing chain type advance / retreat operation device 100 of the first embodiment of the present invention, and FIG. 2 (A) is a meshing chain type advance / retreat operation of the first embodiment of the present invention. FIG. 2B is an exploded perspective view of a part of a pair of meshing chains 120 used in the apparatus 100, and FIG. 2B is a pair of meshing chains 120 used in the meshing chain type advance / retreat operation apparatus 100 of the first embodiment of the present invention. FIG. 3 is a view seen from the Y-axis direction showing the operation of the interlocking chain type advance / retreat operation device 100 of the first embodiment of the present invention.

Among these, FIG. 3 (A) is a diagram showing a state in which the workpiece W that has been sent has reached the same position as the position of the contact portion 130 of the meshing chain type advance / retreat operation device 100 in the Y-axis direction. FIG. 3B is a view showing a state in which the contact portion 130 has moved from the state of FIG. 3A to the advance side in the forward / backward direction, and FIG. It is a figure which shows the state which the contact part 130 moved further to the advance / retreat direction advance side.
The Y-axis direction is a direction from upstream to downstream of the feed path C.

As shown in FIGS. 1 to 3, the meshing chain type advance / retreat operation device 100 according to the first embodiment of the present invention transmits a power of a drive motor (not shown) to advance and retract in the advance / retreat direction S. It has a chain 120.
Specifically, the meshing chain type advance / retreat operation device 100 includes a base 110 and a pair of meshing chains 120.
Among these, the base 110 has a drive sprocket (not shown) driven by a drive motor (not shown) and a chain storage part 111 for storing a pair of meshing chains 120.

The pair of meshing chains 120 includes one meshing chain 120A and the other meshing chain 120B (see FIG. 2B).
As an example, one (one) meshing chain 120A of the pair includes an internal tooth plate 121, an external tooth plate 122, a bush 123, a connecting pin 124, and a roller 125 (FIG. 2). (See (A)).
Among these, the internal tooth plate 121 is spaced apart in a pair in the chain width direction T and has bush holes disposed in the longitudinal direction of the chain.
In addition, a pair of external tooth plates 122 are disposed outside the pair of internal tooth plates 121 and have pin holes disposed in the longitudinal direction of the chain.

Then, both ends of the bush 123 rotatably inserted into the roller 125 are press-fitted into the bush holes of the pair of internal tooth plates 121, and the connecting pin 124 is rotatably inserted into the bush 123. Is press-fitted into the pin holes of the pair of external tooth plates 122, whereby the internal tooth plate 121 and the external tooth plate 122 are coupled in the longitudinal direction of the chain.
In this embodiment, the unit composed of the pair of internal tooth plates 121 and the pair of external tooth plates 122 is configured in three rows in the chain width direction T. However, the number may be less or more than three. Needless to say.

Then, when the drive sprocket rotates in one direction, the disengaged portion 120H of the pair of meshing chains 120 is moved by receiving power, and sequentially meshes with each other by the merge of two guide grooves (not shown) to be integrated. The meshed engagement portion 120G moves to the advance side in the forward / backward direction.
On the other hand, when the drive sprocket rotates in the opposite direction, the meshing portions 120G of the pair of meshing chains 120 receive power and move to the retracting side in the forward / backward direction, and are disengaged from each other by a branch of a single guide groove (not shown). The disengagement portion 120 </ b> H is configured to be stored in the chain storage portion 111.

Further, the meshing chain type advance / retreat operation device 100 is disposed on the advance / retreat path of the meshing engagement portion 120G of the pair of engagement chains 120 to form a groove shape and guide the engagement portion 120G in the advance / retreat direction S. And a contact portion 130 that is attached to the advancing and retreating direction advance side of the meshing portion 120G and contacts the workpiece W.
Further, the projecting portion 131 that is at least a part of the abutting portion 130 is in the vertical direction U of the groove 141 of the groove-shaped guide member 140 from the top-side end portion 141b of the groove-shaped guide member 140 to the vertical direction, that is, The groove-shaped guide member 140 is provided so as to protrude to the opposite side to the bottom 141a of the groove 141.
As a result, the meshing portions 120G of the pair of meshing chains 120 are guided in the advance / retreat direction S along the grooves 141 of the groove-shaped guide member 140.
Furthermore, the protrusion 131 of the contact portion 130 protrudes from the groove-shaped guide member 140 and moves by the entire length of the advance / retreat stroke.

As an example, the base 110 of the meshing chain type advance / retreat operation device 100 is installed in the vicinity of the feed path C of the workpiece W by a belt conveyor or the like, and the advancing / retreating direction S of the meshing portion 120G of the pair of meshing chains 120 is determined by the feed path C. The width direction X is configured.
In the first embodiment, in the vertical direction Z, the position of the meshing portion 120G of the pair of meshing chains 120 and the position of the groove-shaped guide member 140 are below the position of the workpiece W, and the protruding portion 131 of the contact portion 130 is. Is overlapped with the position of the workpiece W.
Further, the vertical direction Z of the groove 141 of the groove-shaped guide member 140 is arranged in the vertical direction Z.

A plurality of groove-shaped guide members 140 are arranged at intervals in the forward / backward direction S.
As a result, the meshing portions 120G of the pair of meshing chains 120 are guided in the advancing / retreating direction S at a plurality of points, so that the meshing portion 120G has a stable posture.
In the present embodiment, two groove-shaped guide members 140 are arranged at intervals in the advancing / retreating direction S, and the meshing portions 120G of the pair of meshing chains 120 are guided and engaged in the advancing / retreating direction S at two points. The posture of the portion 120G becomes a stable posture.
Of course, the number of the groove-shaped guide members 140 may be three or more.

Further, the meshing chain 120A (120B) includes a pair of internal teeth plates 121 spaced apart in the chain width direction T, a pair of external teeth plates 122 disposed outside the pair of internal teeth plates 121, and a pair of internal teeth. A bush 123 that is press-fitted into the bush hole of the plate 121, and is rotatably inserted into the bush 123 and is press-fitted into a pin hole of the pair of external tooth plates 122 to connect the internal tooth plate 121 and the external tooth plate 122. The extending direction of the connecting pin 124 is provided in the same direction as the width direction of the groove 141 of the groove-shaped guide member 140.
As a result, the cross-sectional secondary moment in the extending direction of the connecting pin 124 in the engaging portion 120G of the pair of engaging chains 120 is usually smaller than the cross-sectional secondary moment in the direction orthogonal to the extending direction of the connecting pin 124 and the forward / backward direction S. Therefore, the meshing portion 120G of the pair of meshing chains 120 tends to bend and buckle easily in the extending direction of the connecting pin 124, and the positions of both side walls of the groove 141 of the groove-shaped guide member 140 are the connecting pin 124 with respect to the meshing portion 120G. It becomes both sides of the extending direction.
That is, there is a side wall of the groove 141 of the groove-shaped guide member 140 in a direction in which the engagement portion 120G of the pair of engagement chains 120 tends to bend and buckle. The meshing portion 120G of the meshing chain 120 is supported.

Next, the operation of the meshing chain type advance / retreat operation device 100 will be described.
As shown in FIG. 3A, the workpiece W is fed in the Y-axis direction in a state where the contact portion 130 of the meshing chain type advance / retreat operation device 100 is retracted from the conveyance path.
Then, the workpiece W reaches a first predetermined position that is the same position as the position of the contact portion 130 in the Y-axis direction.

Then, as shown in FIG. 3B, when the meshing portion 120G of the pair of meshing chains 120 of the meshing chain type advance / retreat operating device 100 moves to the advancing / retreating direction advancing side, the contact part 130 also moves to the advancing / retreating direction advancing side. To do.
At this time, the protruding portion 131 of the contact portion 130 contacts the side surface of the workpiece W and moves together with the workpiece W while pressing toward the advancing / retreating direction advance side.

Here, since the meshing portion 120G of the pair of meshing chains 120 is guided by the first groove-shaped guide member 140, the meshing portion 120G is prevented from bending and buckling in the Y-axis direction and the Z-axis direction. it can.
Note that the trigger of the operation of the meshing chain type advance / retreat operation device 100 is that the workpiece W is moved to the first predetermined position by a non-contact sensor or the like (not shown) when the workpiece W is a push target depending on whether or not the work W is a push target. It is performed by detecting that it has been reached.

Then, as shown in FIG. 3C, when the meshing portion 120G of the pair of meshing chains 120 of the meshing chain type advance / retreat operation device 100 further moves to the advance / retreat direction advance side, the contact portion 130 also moves to the advance / retreat direction advance side. Move further.
At this time, the protrusion 131 of the contact portion 130 moves together with the workpiece W while further pressing toward the advancing / retreating direction, and pushes the workpiece W to a second predetermined position on the side of the feed path C.

Here, since the meshing portions 120G of the pair of meshing chains 120 are guided by the two groove-shaped guide members 140 spaced apart from each other, even if the meshing portion 120G is long in the forward / backward direction S, the Y-axis direction and the Z-axis It is possible to prevent the meshing portion 120G from bending and buckling in the axial direction.
That is, the workpiece W can be reliably pushed out to the second predetermined position.
Thereafter, the meshing portion 120G and the contact portion 130 of the pair of meshing chains 120 move to the retracting side in the forward / backward direction and stop at the position shown in FIG.
Note that the abutting portion 130 at the tip of the meshing portion 120G of the pair of meshing chains 120 can smoothly enter the groove 141 of the groove-shaped guide member 140 in the forward / backward direction S in at least one of the abutting portion 130 and the groove 141. It goes without saying that an inclined guide portion that is inclined with respect to the groove and guides the contact portion 130 to the groove 141 may be formed.

  The meshing chain type advance / retreat operation device 100 according to the first embodiment of the present invention thus obtained is disposed on the advancing / retreating path of the meshing portion 120G of the pair of meshing chains 120 to form a groove shape. A groove-shaped guide member 140 as a groove-shaped guide portion that guides the meshing portion 120G in the advance / retreat direction S, and a contact portion 130 that is attached to the advancement / retraction direction advance side of the meshing portion 120G and contacts the workpiece W. The protrusion 131 that is at least a part of the contact portion 130 is provided so as to protrude from the top end 141b of the groove-shaped guide member 140 toward the top and bottom in the vertical direction U of the groove 141 of the groove-shaped guide member 140. As a result, it is possible to prevent the meshing portion 120G from being bent or buckled with a simple structure, and on the advancing / retreating path of the protruding portion 131 from which the contact portion 130 protrudes. It can be moved correspondingly by pressing a certain workpiece W by the projection portion 131 which projects the contact portion 130 to the forward and backward stroke of the abutment portion 130.

  Further, since a plurality of the groove-shaped guide members 140 are disposed with a space in the advancing / retreating direction S, it is possible to increase the degree of freedom of the arrangement and the space of the groove-shaped guide members 140.

  Further, the meshing chain 120A (120B) includes a pair of internal teeth plates 121 spaced apart in the chain width direction T, a pair of external teeth plates 122 disposed outside the pair of internal teeth plates 121, and a pair of internal teeth. A bush 123 that is press-fitted into the bush hole of the plate 121, and is rotatably inserted into the bush 123 and is press-fitted into a pin hole of the pair of external tooth plates 122 to connect the internal tooth plate 121 and the external tooth plate 122. And the extending direction of the connecting pin 124 is provided in the same direction as the width direction of the groove 141 of the groove-shaped guide member 140, so that the groove of the groove-shaped guide member 140 is provided. The effect is enormous, for example, it is possible to reliably prevent the meshing portion 120G from being bent or buckled by the side walls of both sides 141.

Next, an interlocking chain type advance / retreat operation device 200 according to a second embodiment of the present invention will be described with reference to FIGS.
Here, FIG. 4 is a schematic perspective view showing the meshing chain type advance / retreat operation device 200 of the second embodiment of the present invention, and FIG. 5 shows the meshing chain type advance / retreat operation device 200 of the second embodiment of the present invention. It is the figure seen from the Z-axis direction which shows operation | movement.

  Among these, FIG. 5A is a diagram showing a state in which the workpiece W that has been delivered has reached the same position as the position of the contact portion 230 of the meshing chain type advance / retreat operation device 200 in the Y-axis direction. FIG. 5B is a view showing a state where the contact portion 230 has moved from the state of FIG. 5A to the advance side in the forward / backward direction, and FIG. It is a figure which shows the state which the contact part 230 moved further to the advance / retreat direction advance side.

  The meshing chain type advance / retreat operation device 200 of the second embodiment changes the vertical direction U of the groove 141 of the groove-shaped guide member 140 of the meshing chain type advance / retreat operation device 100 of the first embodiment from the Z-axis direction to the Y-axis direction. In addition, the extending direction of the connecting pin 124 of the meshing chain 120A (120B) is changed from the Y-axis direction to the Z-axis direction, and many elements are common to the meshing chain type advance / retreat operation device 100 of the first embodiment. Detailed explanations of common items are omitted, and only the reference numbers in the 200s in the last two digits are used.

As shown in FIGS. 4 and 5, the meshing chain type advance / retreat operation device 200 according to the second embodiment of the present invention transmits a power of a drive motor (not shown) to advance and retract in the advance / retreat direction S. It has a chain 220.
In the second embodiment, in the vertical direction Z, the position of the meshing portion 220G of the pair of meshing chains 220 and the position of the groove-shaped guide member 240 overlap the position of the workpiece W, and further, the protrusion 231 of the contact portion 230 The position overlaps the position of the workpiece W.
Further, the groove 241 of the groove-shaped guide member 240 is disposed such that the vertical direction U of the groove 241 is the Y-axis direction.

And as shown in FIG. 4, the workpiece | work W is comprised so that it may pass between the two groove-shaped guide members 240. FIG.
As shown in FIG. 5A, the workpiece W is sent in the Y-axis direction in a state where the contact portion 230 of the meshing chain type advance / retreat operation device 200 is retracted from the conveyance path.
Then, the workpiece W reaches a first predetermined position that is the same position as the position of the contact portion 230 in the Y-axis direction.

Then, as shown in FIG. 5B, when the meshing portion 220G of the pair of meshing chains 220 of the meshing chain type advance / retreat operation device 200 moves to the advance side in the advance / retreat direction, the contact part 230 also moves to the advance side in the advance / retreat direction. To do.
At this time, the protruding portion 231 of the contact portion 230 contacts the side surface of the workpiece W and moves together with the workpiece W while pressing toward the advancing / retreating direction advance side.

Then, as shown in FIG. 5C, when the meshing portion 220G of the pair of meshing chains 220 of the meshing chain type advance / retreat operating device 200 further moves to the advance / retreat direction advance side, the contact portion 230 also moves to the advance / retreat direction advance side. Move further.
At this time, the protruding portion 231 of the contact portion 230 moves together with the workpiece W while further pressing toward the advancing / retreating direction advance side, and pushes the workpiece W to a second predetermined position on the side of the feed path C.
Thereafter, the meshing portion 220G and the contact portion 230 of the pair of meshing chains 220 move to the retracting side in the forward / backward direction and stop at the position shown in FIG.

  In the second embodiment, in the vertical direction Z, the position of the meshing portion 220G of the pair of meshing chains 220 and the position of the groove-shaped guide member 240 overlap with the position of the workpiece W, and the position of the protrusion 231 of the contact portion 230 is the workpiece. It overlaps with the position of W and is arranged so that the vertical direction U of the groove 241 of the groove-shaped guide member 240 is the Y-axis direction, and the workpiece W is configured to pass between the two groove-shaped guide members 240. Therefore, it is not necessary to divide the belt conveyor or the like forming the feed path C at the position of the advancing / retreating path of the meshing portion 220G of the pair of meshing chains 220. Therefore, the feed path C is compared with the configuration of the first embodiment. The effect is enormous, for example, the belt conveyor to be formed can have a simple configuration.

Next, an interlocking chain type advance / retreat operation device 300 according to a third embodiment of the present invention will be described with reference to FIG.
Here, FIG. 6 (A) is a perspective view showing the groove-shaped guide member 340 of the meshing chain type advance / retreat operation device 300 according to the third embodiment of the present invention, and FIG. 6 (B) is a diagram of the present invention. It is the figure which looked at the groove-shaped guide member 340 of 3 Example, the meshing part 320G of a pair of meshing chain 320, and the contact part 330 toward the retreating side from the advancing / retreating direction advancing side.

  The groove-shaped guide member 340 of the meshing chain type advance / retreat operation device 300 of the third embodiment is a pair of the meshing chain type advancement / retraction operation device 100 of the first example (or the meshing chain type advancement / retraction operation device 200 of the second example). The end of the connecting pin 124 of the meshing chain 120 protrudes from the external tooth plate 122 and enters between the end of the connecting pin 124 of one meshing chain 120A and the end of the coupling pin 124 of the other meshing chain 120B. The guide member 341c is provided on the side wall of the groove 141 of the groove-shaped guide member 140, and the engagement chain type advance / retreat operation device 100 of the first embodiment and the engagement chain type of the second embodiment are provided for many elements. Since it is common with the advance / retreat operation device 200, detailed description of the common items will be omitted, and only the numbers in the 300s in the last two digits will be attached. .

As shown in FIGS. 6A and 6B, the groove-shaped guide member 340 of the meshing chain type advance / retreat operation device 300 according to the third embodiment of the present invention is arranged inside the groove 341 of the groove-shaped guide member 340. Ridge guide portions 341c disposed on both side surfaces of the rim.
Further, end portions 324 a of the connecting pins 324 of the pair of meshing chains 320 protrude outward from the external tooth plate 322 in the chain width direction.

And the protrusion guide part 341c has the end part 324a of the connection pin 324 of one engagement chain 320A and the connection pin 324 of the other engagement chain 320B in the engagement part 320G of the pair of engagement chains 320 in the vertical direction U of the groove 341. Is disposed between the end portion 324a.
As a result, relative movement between the meshing portion 320G of the pair of meshing chains 320 and the groove-shaped guide member 340 in the vertical direction U of the groove 341 of the groove-shaped guide member 340 is restricted, and the relative positional relationship is determined.
That is, the meshing portion 320G of the pair of meshing chains 320 is prevented from slipping out from the groove 341 of the groove-shaped guide member 340 in the direction opposite to the bottom 341a of the groove 341.

  In the meshing chain type advance / retreat operation device 300 according to the third embodiment of the present invention thus obtained, the groove-shaped guide members 340 are disposed on both side surfaces inside the groove 341 of the groove-shaped guide member 340. The end portion 324a of the connecting pin 324 of the pair of meshing chains 320 protrudes outward in the chain width direction from the external tooth plate 322, and the protrusion guide portion 341c is formed in the groove 341. In the vertical direction U, the engagement portion 320G of the pair of engagement chains 320 is disposed between the end portion 324a of the connection pin 324 of one engagement chain 320A and the end portion 324a of the connection pin 324 of the other engagement chain 320B. As a result, the pair of meshing chains 320 is engaged with the groove-shaped guide member 340 in the vertical direction U of the groove 341 of the groove-shaped guide member 340. Etc. can be prevented a deviation of part 320G have, the effect is significant.

100, 200, 300 ... meshing chain type advance / retreat operation device 110, 210 ... base 111, 211 ... chain storage part 120, 220, 320 ... pair of meshing chains 120A, 320A ... (one side) ) Meshing chain 120B, 320B ... (the other) meshing chain 120G, 220G, 320G ... meshing part 120H ... meshing off part 121 ... internal tooth plate 122, 322 ... external tooth plate 123 ... Bushings 124, 324 ... Connection pins
324a ... End 125 ... Roller 130, 230, 330 ... Abutment 131, 231, 331 ... Projection 140, 240, 340 ... Groove-shaped guide member (groove-shaped guide)
141, 241, 341 ... grooves 141a, 241a, 341a ... bottom 141b, 241b, 341b ... top edge
341c ... ridge guide part C ... feed path S (work of belt conveyor or the like) ... advance / retreat direction T ... chain width direction U ... top / bottom direction W ... work X ... Width direction Y of the feed path ... Direction Z from the upstream to the downstream of the feed path ... Vertical direction

Claims (4)

In a meshing chain type advance / retreat operation device having a pair of meshing chains that transmit / receive power of a drive motor to advance / retreat in a forward / backward direction,
A groove-shaped guide portion that is disposed on the advancing / retreating path of the meshed meshing portions of the pair of meshing chains to form a groove shape and guide the meshing portions in the advancing / retreating direction;
A contact portion that is attached to the advancing and retreating direction advance side of the meshing portion and contacts the workpiece;
At least a part of the abutting portion is provided so as to protrude in the vertical direction of the groove of the groove-shaped guide portion from the top-side end portion of the groove-shaped guide portion toward the vertical direction, and the meshing chain type advance / retreat Actuator.   2. The interlocking chain type advance / retreat operation device according to claim 1, wherein a plurality of the groove-shaped guide portions are arranged at intervals in the advance / retreat direction.   The meshing chain is press-fitted into a pair of internal tooth plates spaced apart in the chain width direction, a pair of external tooth plates disposed outside the pair of internal tooth plates, and bush holes of the pair of internal tooth plates. A bush and a connecting pin that is rotatably inserted into the bush and is press-fitted into a pin hole of a pair of external tooth plates to connect the internal tooth plate and the external tooth plate. The meshing chain type advance / retreat operation device according to claim 1, wherein an extending direction is provided in the same direction as a width direction of the groove of the groove-shaped guide portion.   The groove-shaped guide portion has ridge guide portions disposed on both side surfaces inside the groove of the groove-shaped guide portion, and ends of the connecting pins of the pair of meshing chains are separated from the external tooth plate. The protrusion guide portion protrudes outward in the chain width direction, and the end portion of the connecting pin of one meshing chain and the connecting pin of the other meshing chain at the meshing portion of the pair of meshing chains in the vertical direction of the groove The engagement chain type advance / retreat operation device according to claim 3, wherein the engagement chain type advance / retreat operation device is disposed between the end portion of the engagement chain type operation device and the engagement portion.

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