JP6387810B2 - Work transfer device - Google Patents

Description

  The present invention relates to a workpiece transfer device, and more particularly to a workpiece transfer device suitable for transferring a hot ring-shaped workpiece or the like.

  Conventionally, a workpiece for which hot forging has been finished is often transported by dropping it from a mold onto a conveyor or the like. On the other hand, Patent Document 1 discloses a transport mechanism of a press apparatus that carries a work into and out of the press apparatus by holding the work with a chuck hand.

JP-A-10-286699

  However, if a workpiece with a hot surface is dropped onto the conveyor, it may cause wrinkles on the outer periphery of the workpiece, and only the part touching the conveyor is removed, causing a local temperature drop. There was a problem that the uniform quality of the workpiece could not be maintained. Further, in the conveyance using the chuck hand, there is a problem that the conveyance mechanism becomes complicated and the quality is inevitably deteriorated due to the heat removal of only the work portion held during the conveyance.

  Therefore, the present invention solves such a problem, and a workpiece transfer device capable of transferring a hot ring-shaped workpiece or the like with a simple structure without causing wrinkles while maintaining workpiece quality. The purpose is to provide.

  In order to achieve the above object, in the first invention, the first and second support devices (2, 5) provided with a plurality of horizontal support rods (41, 42) at a predetermined pitch in the lateral direction are opposed to each other. The support rod (41) of the first support device (2) can be moved back and forth between pitches in the lateral direction, and can be moved back and forth in the vertical direction, and the workpiece (W) can be inserted. Between the position entering the hole (W1) and the position retracting out of the insertion hole (W1), the second support device (5) is provided with its support rod (42). It is provided so as to be able to reciprocate in the front-rear direction between a position that enters the insertion hole (W1) of the workpiece (W) and a position that moves out of the insertion hole (W1).

  In the first aspect of the invention, the support rod of the first support device is appropriately moved in the lateral direction, the up-down direction, and the front-rear direction, and moved in the front-rear direction to support the second support device from the support rods of the first support device Put the work on the stick. By repeating this, the workpiece is suspended and conveyed sequentially while moving alternately from the support rod of the first support device to the support rod of the second support device. According to the first aspect of the present invention, since the work is not dropped onto the conveyor as in the prior art, there is no risk of scratching the work outer periphery. Further, since the inner peripheral surface of the workpiece is only in line contact with the outer peripheral surface of the support rod, the workpiece is locally removed from heat, the temperature distribution becomes non-uniform, and there is no inconvenience that degrades the quality of the workpiece. Furthermore, the structure is greatly simplified compared to the chuck hand.

  In the second invention, the first support device (2) is divided into a first device portion (2A) provided with support rods (41) at a predetermined pitch, and support rods (41) at a pitch twice the predetermined pitch. The second device unit (2B) is provided, and the second support device (5) is provided with support rods (42) at a predetermined pitch corresponding to the first support device (2). It comprises a device part (5A) and a second device part (5B) provided with support rods (42) at twice the pitch, and the second device part (5B) is laterally arranged at the predetermined pitch. It can be moved back and forth.

  In the second invention, in addition to the movement operation of the first invention, the transport pitch can be changed from a predetermined pitch to a double pitch and vice versa by appropriately reciprocating the second device portion in the lateral direction. it can.

  In the third aspect of the invention, a part (57) of the second support device (5) is provided so as to be able to reciprocate in the front-rear direction independently of other parts, and a support bar provided on the part (57) Means (61) for extracting the workpiece (W) from the support rod (41) of the first support device (2) facing the (42) is provided.

  In the third aspect of the present invention, a part of the second support device is not moved forward at a necessary timing, and the support rod of the second support device is separated from the support rod of the first support device. By pulling out the workpiece from, the workpiece W to be conveyed can be taken out of the line as an inspection sample.

  In this 4th invention, the insertion hole (W1) of the said workpiece | work (W) is common in which each support rod (41, 42) of the said 1st support apparatus (2) and a 2nd support apparatus (2) enters into or leaves. It is a through hole, and a work stacking device (7) is provided following the last stage of the second support device (5), and a support rod (41) of the first support device (2) is provided in the work stacking device (7). ) Is provided with a work collecting support rod (71), and the workpiece (W) is extracted from the support rod (41) of the first support device (2) whose tips are close to each other. A means (62) for pushing the workpiece (W) into (71) is provided.

  In the fourth aspect of the invention, the work is extracted from the support bar of the first support device with the tips close to each other, and the work is pushed into the work stacking support bar. Pushed into the bar and accumulated.

  As described above, according to the workpiece transfer device of the present invention, it is possible to transfer a hot ring-shaped workpiece or the like with a simple structure without causing wrinkles while maintaining workpiece quality.

It is a whole top view of the workpiece conveyance apparatus in 1st Embodiment of this invention. FIG. 2 is a vertical sectional view taken along line II-II in FIG. 1. It is a principal part top view of the apparatus which shows the action | operation of a workpiece conveyance apparatus. It is a principal part top view of the apparatus which shows the action | operation of a workpiece conveyance apparatus. It is a principal part top view of the apparatus which shows the action | operation of a workpiece conveyance apparatus. It is a principal part schematic plan view of the workpiece conveyance apparatus which shows the action | operation of the apparatus in 2nd Embodiment of this invention. It is a principal part schematic plan view of the workpiece conveyance apparatus which shows the action | operation of an apparatus. It is a principal part schematic plan view of the workpiece conveyance apparatus which shows the action | operation of an apparatus. It is a principal part schematic plan view of the workpiece conveyance apparatus which shows the action | operation of the apparatus in 3rd Embodiment of this invention. It is a principal part schematic plan view of the workpiece conveyance apparatus which shows the action | operation of the apparatus in 4th Embodiment of this invention.

  The embodiment described below is merely an example, and various design improvements made by those skilled in the art without departing from the gist of the present invention are also included in the scope of the present invention.

(First embodiment)
FIG. 1 is an overall plan view of the workpiece transfer device, and FIG. 2 is a cross-sectional view taken along line II-II in FIG. The work transfer device includes a base, and the base 1 has a main part 11 extending in the left-right direction, and sub-parts 12 and 13 projecting forward (downward in FIG. 1) at two locations in the longitudinal direction of the main part 11. have. The work transfer device includes a first support device 2 provided on the main portion 11 and a second support device 5 provided on the sub portions 12 and 13.

  That is, a parallel rail member 13 extending in the longitudinal direction along the main portion 11 is provided on the main portion 11, and left and right between the rail member 13 and the stopper members 14 and 14 (FIG. 1) along the rail member 13. A pair of left and right plate-shaped movable bodies 21 and 22 are provided so as to be movable. On each movable body 21, 22, parallel rail members 23, 24 extending in the front-rear direction orthogonal to the rail member 13 are provided. A plate-like connecting member 25 is installed between the left and right movable bodies 21, 22, and the lower surfaces of the left and right end portions of the connecting member 25 are on the rail members 23, 24 of the movable bodies 21, 22, respectively. It is mounted so that it can move.

  On the left and right end portions of the connecting member 25, support bodies 31 and 32 made of U-shaped angle material are erected. With such a structure, the left and right support bodies 31 and 32 can be moved integrally in the left-right direction along the rail member 13 and the stopper bodies 26, 26, 27, and 27 along the rail members 23 and 24 (see FIG. It can move integrally in the front-rear direction while abutting on 1).

  Parallel rail members 35 and 36 extending in the vertical direction are provided on the front surfaces (lower surfaces in FIG. 1) of the supports 31 and 32 via spacer plates 33 and 34. A plate-like connecting member 37 is installed between the left and right supports 31 and 32, and the rear surfaces of the left and right ends of the connecting member 37 are on the rail members 35 and 36 of the supports 31 and 32, respectively. It is mounted so that it can move. With such a structure, the connecting member 37 can move in the vertical direction while contacting the stopper bodies 38, 38, 39, 39 (FIG. 1) along the rail members 35, 36.

  Here, the connecting member 37 is provided with protruding support rods 41 extending forward at three positions at equal pitches in the longitudinal direction. Each pair of support rods 41 is provided in close proximity and in parallel with a small gap. With the above structure, each support bar 41 can be moved integrally left and right, front and rear, and up and down within a certain range. These support bar 41, movable bodies 21 and 22, connecting members 25 and 37, support body 31, The first support device 2 is composed of 32 and the like.

  Rail members 17 and 18 extending in parallel in the front-rear direction are provided on the fixed substrates 15 and 16 on the left and right sub-portions 12 and 13 of the base 1, respectively. A plate-like connecting member 51 is installed between the sub-portions 12 and 13, and the lower surfaces of the left and right end portions of the connecting member 51 are respectively provided on the rail members 17 and 18 of the sub-portions 12 and 13 along the stoppers. It is mounted so as to be movable while abutting against the bodies 52 and 53 (FIG. 1).

  On the left and right ends of the connecting member 51, supports 54 and 55 made of U-shaped angle material are erected. A plate-like connecting member 56 is installed between the left and right supports 54, 55, and support rods 42 projecting backward are projected from the connecting member 56 at three positions at equal pitches in the longitudinal direction. With the above structure, the support rods 42 can be moved back and forth integrally within a certain range, and the second support device 5 is configured by the support rods 42, the connecting members 51 and 56, the support bodies 54 and 55, and the like. ing.

  In addition, the installation pitch of each support rod 42 is equal to the installation pitch of each said pair of support rod 41, and in the state which the support rod 41 has moved to the right end position shown in FIG. It is located in the middle of the support bar 41. The support devices 2 and 5 for moving the support rods 41 and 42 are driven by a ball screw mechanism and a servo motor (not shown).

  The operation in the case of conveying a hot ring-shaped workpiece by the workpiece conveying device having such a structure will be described below with reference to FIGS. In FIG. 3A, the first support device 2 is located at the rear end of the right end as in FIG. 1, while the second support device 5 is in the rear end position approaching the first support device 2. In this state, the support bar 41 of the first support device 2 is lowered to the lowest end.

  When the ring-shaped workpiece W formed by the hot forging machine reaches the unloading port by a known unloading mechanism attached to the forging machine, the first support device 2 is moved to the left by one pitch, and the left end position (FIG. 3 (2)), the support bar 41 is opposed to the through hole (insertion hole) W1 of the ring-shaped workpiece W. Subsequently, the first support device 2 moves forward so as to approach the second support device 5 (FIG. 3 (3)), and the support bar 41 is inserted into the through hole W1 of the workpiece W. Thereafter, when the support bar 41 is raised, the support bar 41 comes into contact with the inner periphery of the upper edge of the through-hole W1 of the workpiece W in this raising process to lift the workpiece W (FIG. 4 (1)).

  Thereafter, when the second support device 5 moves backward away from the first support device and the support rod 42 comes out from between the two support rods 41 in plan view (FIG. 4 (2)), the first support device. 2 is again moved rightward by one pitch to reach the right end position, and the workpiece W suspended by the support bar 41 is conveyed to a position facing the support bar 42 of the second support device 5 (FIG. 4 (3)). Therefore, the second support device 5 is advanced again, and the support rod 42 is positioned between the support rods 41 in plan view (FIG. 5 (1)). When the support bar 41 of the first support device 2 is lowered below the support bar 42 in this state, the inner periphery of the upper edge of the through hole W1 contacts the support bar 42 in the process, and the workpiece W is supported by the support bar 41. It is moved from above onto the support bar 42 (FIG. 5 (2)).

  Thereafter, the first support device 2 is retracted, and the support bar 41 is retracted from the through hole W1 of the workpiece W (FIG. 5 (3)). Then, by repeating the operation of FIG. 3 (1) and subsequent steps again, the ring-shaped workpiece W formed by the hot forging machine is repetitively reciprocated by 1 pitch of the first support device 2, thereby the first support device 2. From the left support bar 41 to the support bar 42 of the second support device 5, they are sequentially suspended and conveyed while moving alternately from left to right.

  According to such a workpiece transfer device, since the workpiece is not dropped onto the conveyor as in the prior art, there is no possibility of causing damage to the workpiece outer periphery, and the inner peripheral surface of the workpiece is only in line contact with the outer peripheral surface of the support bar. Therefore, the work is locally removed and the temperature distribution becomes non-uniform, so that the problem of deterioration of the work quality does not occur. In particular, since the line contact portion between the work inner peripheral surface and the support rod outer peripheral surface is slightly shifted due to vibration or the like during conveyance, local heat removal is further alleviated. Further, since the support rods and the inner periphery of the through hole of the workpiece are hardly rubbed, the inner peripheral surface of the workpiece is not damaged. Furthermore, the structure is greatly simplified compared to the chuck hand.

  In this embodiment, the support bars 41 and 42 of the support devices 2 and 5 are provided at three locations. However, if the number of support bars is increased, it is possible to carry a longer distance. Further, although the support rods 41 of the first support device 2 are provided close to each other in parallel, the support rods 41 may be provided as one support rod 42 of the second support device 5.

(Second Embodiment)
With reference to FIGS. 6-8, the example in the case of changing a conveyance pitch with the workpiece conveyance apparatus of this invention is shown. 6 (1) to (3), FIGS. 7 (1) to (3), and FIGS. 8 (1) to (3) according to the present embodiment are the same as those in FIG. This corresponds to the operating states shown in 1) to (3), FIGS. 4 (1) to (3), and FIGS. 5 (1) to (3).

  In the present embodiment, the first support device 2 is provided with a device portion (first device portion) 2A having a small installation pitch of the support bars 41 and a device portion (second device portion) 2B having a double installation pitch. In the second support device 5, a device portion 5 </ b> A having a small installation pitch of the support rods 42 and a device device 5 </ b> B having a large installation pitch are provided according to the pitch change of the first support device 2. In the present embodiment, the device unit 5B can move left and right for one small pitch (1/2 of the large pitch) in addition to the longitudinal movement. Other structures are the same as those in the first embodiment. In addition, although each support rod 41 of the 1st support apparatus 2 is actually provided in close proximity as demonstrated in 1st Embodiment, it draws like one in each following figure.

  In this embodiment, the first support device 2 is moved and operated in the same manner as in the first embodiment, and when the first support device 2 is moved to the left by a small pitch, as shown in FIG. (2) The device unit 5B of the support device 5 is moved to the right by the pitch. When the workpiece W is suspended from the support rod 41 of the first support device 2 and the first support device 2 moves to the right by one small pitch, the second support device 2 is shown in FIG. The device unit 2B is moved to the left by one pitch. 6 to 8 are repeated in this manner, while moving from the support rod 41 of the first support device 2 to the support rod 42 of the second support device 5 alternately from left to right. Thus, the conveyance pitch is changed and the workpiece W is sequentially suspended and conveyed.

(Third embodiment)
In the second embodiment, as shown in FIG. 9A, a part 57 of the device portion 5A of the second support device 5 is structured to be able to move back and forth independently, and the device of the first support device 2 at the corresponding position. A pusher 61 is provided behind the portion 2A. Then, the part 57 is stopped at the retreated position without being advanced at a predetermined timing (FIG. 9B), and the work W suspended by the pusher 61 on the support rod 41 of the apparatus unit 2A at this timing is supported. Pushing toward the tip of the rod 41, the rod 41 is extracted and dropped (FIGS. 9 (3) and (4)). Thereby, the work W conveyed in the line can be taken out of the line as an inspection sample.

(Fourth embodiment)
As shown in FIGS. 10 (1) to (3), at the last stage of the first support device 2, the installation pitch of the support rod 41 is moved to be the same as that of the device portion 2A by moving integrally with the other device portions 2A and 2B. An apparatus unit 2C is provided. The last stage of the second support device 5 is provided with a device portion 5C that performs only forward and backward movement integrally with the device portion 5A, and has a support pitch of the support rod 42 set to a small pitch similar to the device portion 5A. Further, a fixed work stacking device 7 is provided adjacent to the device portion 5C, and a work stacking support rod 71 is provided in correspondence with the support rod 41 of the device portion 2C. Further, a pusher 62 is provided behind the device unit 2C. Other structures are the same as those of the second embodiment.

  In such a configuration, the work W conveyed and suspended by the support rod 41 of the device portion 2C of the first support device 2 is extracted from the support rod 41 at a predetermined timing by the pusher 62 and pushed into the support rod 71 opposite to the workpiece W. (FIG. 10 (2)). By repeating this every time the workpiece W is conveyed, a plurality of workpieces W are accumulated on the support rod 71 (FIG. 10 (3)). When a predetermined number of workpieces W are accumulated, they are removed from the support rod 71 and the workpieces W are accumulated again.

(Other embodiments)
In the above embodiment, the workpiece is a ring shape, but the present invention is not limited to this. The shape is not limited as long as the workpiece has an insertion hole into which each support rod of the first support device and the second support device can be inserted. In the above embodiment, the workpiece is in a hot state, but it may be in a cold state before and after heat treatment.

DESCRIPTION OF SYMBOLS 1 ... Base, 13, 14 ... Rail member, 17, 18 ... Rail member, 2 ... 1st support apparatus, 2A ... 1st apparatus part, 2B ... 2nd apparatus part, 21, 22 ... Movable substrate, 23, 24 ... Rail members 31, 32 ... Supports, 35, 36 ... Rail members, 37 ... Connecting members, 41, 42 ... Support rods, 5 ... Second support device, 5A ... First device portion, 5B ... Second device portion , 56 ... connecting member, 57 ... part, 61 ... pusher (extraction means), 62 ... pusher (pushing means), 7 ... work accumulating device, 71 ... work accumulating support rod, W ... work, W1 ... through hole ( Insertion hole).

Claims (4)

First and second support devices provided with a plurality of horizontal support rods at a predetermined pitch in the lateral direction are positioned opposite to each other, and the support rods are moved back and forth between the pitches in the lateral direction in the first support device. It is possible to reciprocate up and down in the up and down direction, and to be able to reciprocate back and forth between a position entering the workpiece insertion hole and a position retreating out of the insertion hole. A workpiece transfer device provided with a rod so as to be reciprocally movable in the front-rear direction between a position where the rod enters the insertion hole of the workpiece and a position where the rod moves out of the insertion hole. The first support device includes a first device portion provided with support rods at a predetermined pitch and a second device portion provided with support rods at a pitch twice the predetermined pitch, and the second support device is configured as follows. A first device part provided with support rods at the predetermined pitch corresponding to the first support device, and a second device part provided with support rods at the double pitch, and the second device. The work conveying apparatus according to claim 1, wherein a portion is provided so as to be reciprocally movable in the lateral direction at the predetermined pitch. A part of the second support device is provided so as to be able to reciprocate in the front-rear direction independently of other parts, and a workpiece is extracted from the support bar of the first support device facing the support bar provided in the part. The work conveying apparatus according to claim 1 or 2, further comprising means. The insertion hole of the work is a common through hole through which each support rod of the first support device and the second support device enters or leaves, and a work stacking device is provided following the last stage of the second support device, The work stacking device is provided with a work stacking support rod facing the support rod of the first support device, and the workpiece stacking support rod is pushed out from the support rod of the first support device whose tips are close to each other. 4. The workpiece transfer apparatus according to claim 1, further comprising means for pushing the workpiece into the arm.

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