JP3886396B2 - Work positioning device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a workpiece positioning device, and particularly, for example, a workpiece such as an AT mission of an automobile is conveyed by using a pole stand type jig that rises from a pallet conveyed on a track arranged under the floor, and a part is assembled. The present invention relates to a workpiece positioning device suitable for attachment.
[0002]
[Prior art]
  When a work such as an AT mission of an automobile is transported and parts are assembled, generally, as shown in FIG. 13, a transport apparatus 100 having a predetermined height is provided with a track 200 composed of a roller conveyor or a chain conveyor. The pallet 300 on which the workpiece W is placed is moved on the track 200, and an operator assembles parts to the workpiece W at a predetermined position.
[0003]
  However, there are cases where the parts are attached to the workpiece W not only from the position on one side of the conveying apparatus 100 but also from the lateral direction or the other side. In such a case, since the height of the transfer device 100 is high, the worker cannot move to the other side of the transfer device 100, and in order to assemble the parts from the other side of the workpiece W, the pallet 300 is attached. A rotation mechanism is provided, the direction of the workpiece W is changed and assembled, or the workpiece W is transferred and conveyed by another track to change the direction, or another worker has to be arranged on the other side of the conveying device 100.
[0004]
  However, recently, a plurality of workers do not assemble one part at a time on a single workpiece as in the conventional belt conveyor type assembly process. There is a case where a work method in which an operator assembles as many parts as possible is employed.
[0005]
  The reason for this is that in the former method in which a plurality of workers assemble one part at a time in a single work, when workers with slow work are included, the overall productivity decreases. If the speed of moving the conveyor is increased in order to increase productivity, it will be harsh for workers who work late, while the conveyor is suitable for those who work slowly. If the movement speed of the machine is lowered, the worker who works quickly becomes uncontrollable, and in any case, it is difficult to assemble the parts efficiently.
[0006]
  In addition, in the latter method where one worker assembles as many parts as possible, the number of products produced and the rate of non-defective products for each worker are clarified. There is an advantage that it becomes easy to grasp the work ability of each worker for the process manager.
[0007]
  However, the transport apparatus 100 as described above has the following problems.
(1) It is difficult to take out parts from the back side of the transport apparatus 100 and to assemble parts from the back side and the side face of the transport apparatus 100.
(2) The work area is only on the front side of the transport apparatus 100, and the back side is likely to be a dead space.
(3) When returning the pallet moved on the track 200 of the transport apparatus 100, there is a restriction that the height of the pallet jig must be lowered in both the horizontal return structure and the upper and lower two-stage return structure.
(4) For the reasons described above, it is difficult to introduce a method in which one worker assembles as many parts as possible.
(5) To provide a bridge over the transport device 100 or to dig a pit on the floor to form a passage under the transport device 100, the operator moves to the other side through the bridge or pit. Since it must be moved up and down, the time loss for movement increases.
[0008]
  Therefore, the applicant separately arranges a track under the floor, and a pallet transported on the track, a pole stand type jig rising from the pallet, and a work attached to the pole stand type jig. A work conveying assembly apparatus having a supporting member was proposed.
[0009]
[Problems to be solved by the invention]
  Such a workpiece transfer assembling apparatus has a pole stand type jig that rises on the floor from a pallet arranged under the floor, and a work support member is arranged on the pole stand type jig, Since the work is placed and fixed, the operator can freely move horizontally on the floor surface, so that the above-mentioned problems are eliminated. However, because the workpiece mounting surface of the pallet and the workpiece support member is separated, it is difficult to position the workpiece with high accuracy due to the processing accuracy of the jig and the inclination and deflection of the pole stand type jig. Therefore, it was said that it was very difficult to cope with press-fitting and assembly machines.
[0010]
  Accordingly, the present invention provides a workpiece conveying and assembling apparatus using a pole stand type jig as described above, and a workpiece that can be positioned with high accuracy on a workpiece mounted on a workpiece support member attached to the pole stand type jig. An object is to provide a positioning device.
[0011]
[Means for Solving the Problems]
  In order to solve the above problems, a workpiece positioning apparatus according to claim 1 of the present invention includes a track, a pallet transported on the track, and a pole stand jig mounted on the pallet and rising. An intermediate support attached to the pole stand type jig so as to be movable up and down, and the intermediate supportAnd a flange portion inserted between the upper and lower horizontal members formed to be horizontally movableA work set base and a work support member attached to the work set base, and positioning means are provided on the pallet, the intermediate support, the work set base and the work support member, respectively.The intermediate support positioning means includes an upper and lower horizontal member of the intermediate support and a flange portion of a work set base inserted so as to be horizontally movable between the upper and lower horizontal members, and a positioning hole. The type jig has a convex portion that is inserted into the upper and lower horizontal members and the positioning hole of the flange portion.It is characterized by this.
[0012]
  Here, the term “track” is not limited as long as the pallet can be conveyed by a chain conveyor, a roller conveyor, or the like. It is possible to adopt any configuration such as a thing that circulates in a horizontal plane or a vertical plane. Further, as described above, the truck and the pallet are desirably arranged under the floor.
[0013]
  According to such a workpiece positioning apparatus, by providing the track and the pallet under the floor, the worker can freely move horizontally on the floor surface and move to the opposite side of the workpiece. It is possible to assemble parts not only from the front side but also from the direction of 360 degrees, such as the far side or the side, with respect to the work on the table. Also, the parts can be placed on the far side as well as on the near side.
[0014]
  In addition, compared to conventional methods using bridges and pits, workers can move to the other side of the track by moving horizontally without moving up and down the bridges and pits, so the loss time due to movement can be significantly reduced, Productivity can be improved.
[0015]
  In this way, it is possible to adopt an assembly work system in which a single worker assembles a large number of parts. Of course, when there are a large number of parts to be assembled for one work, a plurality of workers may be in charge of assembling a plurality of parts.
[0016]
  Since the pallet is positioned with respect to the track, the intermediate support is positioned with respect to the pole stand jig, the work set base is positioned with respect to the intermediate support, and the work support member is positioned, the work support member The mounted and fixed work can be positioned with high accuracy, and high-precision assembly such as fitting with the work can be performed.
[0017]
  Further, in the case of a normal track as shown in FIG. 13, if the assembly direction (press-fit direction, etc.) is changed, another transport track may be required, or a transfer / reversing device may be required. However, since the worker can move in the work assembly apparatus incorporating the positioning device, such a transport track, a transfer / reversing device is not necessary.
[0018]
  According to the workpiece positioning apparatus, the positioning convex portion provided in the pole stand type jig is inserted into the positioning hole provided in the upper and lower horizontal members of the intermediate support and the flange portion of the workpiece setting base. This makes it possible to accurately position the pole stand type jig, the intermediate support, and the work set base, and helps to position the work with high accuracy.
[0019]
  In addition, since the flange part of the work set base is inserted between the upper and lower horizontal members of the intermediate support, the vertical position of the intermediate support and the work set base can be accurately maintained, and the work piece base is supported with respect to the intermediate support. The set base is movable in the horizontal direction, which helps to position the workpiece with high accuracy.
[0020]
  The work positioning apparatus according to claim 2 of the present invention is characterized in that the pole stand jig has a linear guide, and the intermediate support is slidably attached along the linear guide. It is.
[0021]
  According to the above workpiece positioning device, the linear support is provided on the pole stand jig and the intermediate support is slidably mounted by the slide mechanism, so the positional relationship between the pole stand jig and the intermediate support is accurate. And helps to position the workpiece with high accuracy.
[0022]
  Claims of the invention3The workpiece positioning device described inA positioning lift is disposed on the side of the pallet with respect to the direction of travel, and can be moved back and forth and raised and lowered toward the pallet side.The workpiece support member has a positioning hole, and a positioning convex portion to be inserted into the positioning hole.To the positioning liftIt is characterized by providing.
[0023]
  According to the workpiece positioning apparatus, the workpiece supporting member can be positioned with high accuracy by inserting the positioning convex portion into the positioning hole of the workpiece supporting member, and is placed and fixed on the workpiece supporting member. The workpiece can be positioned with high accuracy.
[0024]
  Claims of the invention4The workpiece positioning device according to claim 1, wherein the pallet has a positioning hole, and the track is inserted into the pallet positioning hole and the pallet positioning hole that stops the pallet at a predetermined position. It has the convex part for positioning of this.
[0025]
  According to the work positioning device, the pallet can be stopped at a predetermined position by the stopper, and the pallet can be positioned by inserting the positioning convex portion into the positioning hole of the pallet. Helps to position the workpiece with high accuracy.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, a workpiece positioning apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a part of the workpiece positioning device in cross section, FIG. 2A is a front view of the workpiece positioning device with the track and pallet omitted, and FIG. 2B is the workpiece of FIG. FIG. 3 is a side sectional view taken along the line AA in the positioning device, and FIG. 3 is a plan view in which the work lock mechanism in the work positioning device in FIG. FIGS. 4A, 4B, and 4C are explanatory views of the positioning operation by the workpiece positioning device. For this, the workpiece conveying assembly device, the entire workpiece positioning device, and the workpiece conveying assembly device are transferred. It explains after explaining.
[0027]
  As shown in FIGS. 1 to 3 and 5, the workpiece positioning device (hereinafter referred to as a positioning device) includes a track 10 disposed below the floor plate 80, a pallet 20 conveyed on the track 10, A pole stand-type jig 30 that is attached to the upper surface of the pallet 20 and rises, an intermediate support 40 that is slidably moved up and down on the pole stand-type jig 30, and an intermediate support that can be moved forward and backward from the side in the traveling direction. And a work set base 60 attached to the intermediate support 40 so as to be slidable in the horizontal direction, and a work support member 70 attached to the work set base 60.
[0028]
  FIG. 6 is a schematic plan view of a horizontal circuit track as an example of a track in a workpiece transfer assembly apparatus incorporating a positioning device, FIG. 7 is a side sectional view taken along line AA of the horizontal circuit track of FIG. 7 is an enlarged front view of the chain portion of FIG. 7, FIG. 9 is a schematic front sectional view of a pallet stopper and a positioning mechanism portion in the sub-conveyor of the horizontal circulation track of FIG. 6, and FIG. FIG. 11 is an enlarged plan view of the direction changing means, and FIG. 12 is a side view of the pallet and the pole stand type jig.
[0029]
  As shown in FIG. 6, each of the horizontal circulation tracks 10 includes a linear sub-conveyor (hereinafter referred to as sub-CV) 11, a first pool conveyor (hereinafter referred to as first pool CV) 12, and a main conveyor ( Hereinafter, it is provided with a second pool conveyor (hereinafter referred to as second pool CV) 14 and is arranged in a rectangular shape.
[0030]
  A pallet 20 is provided between the second pool CV14 and the sub CV11, between the sub CV11 and the first pool CV12, between the first pool CV12 and the main CV13, and between the main CV13 and the second pool CV14. As direction changing means for converting the direction of the direction 90 degrees, turnable direction changing conveyors (hereinafter referred to as direction changing CV) 15, 16, 17, 18 are arranged.
[0031]
  FIG. 7 is a side sectional view of the sub-CV 11 taken along the line A-A. In a pit P provided below the floor plate 80, a drive motor 11a and a pair of drive gears 11b driven by the drive motor 11a are shown. And a pair of endless chains 11c driven by the drive gear 11b, and a free roller 11d rotatably provided on the chain 11c. As shown in FIG. 8, the free roller 11d is rotatably attached by a shaft 11e provided above the chain 11c. Here, the free roller 11d may be configured to be fixed to the shaft 11e and the shaft 11e to be rotatable with respect to the chain 11c, or the shaft 11e may be fixed to the chain 11c and the free roller 11d to the shaft 11e. On the other hand, it may be configured to be rotatable.
[0032]
  The pallet 20 is placed on the free roller 11d. Therefore, when the drive gear 11b is driven by the drive motor 11a, the chain 11c moves in the traveling direction (left direction in FIG. 2), and the pallet 20 on the free roller 11d moves in the traveling direction as the chain 11c moves. Move to. The chain 11c has a vertical in-plane return structure, and the portion of the chain 11c that has reached the front end in the traveling direction returns to the starting end again through the lower side.
[0033]
  When the parts are assembled to the workpiece at the predetermined position of the sub-CV 11, as shown in FIG. 9, the parts are moved up and down by a driving means 11f such as an air cylinder or a solenoid corresponding to the parts assembling position between the driving gears 11b. A free stopper 11g is provided, and the pallet 20 that has traveled on the sub-CV 11 is raised as shown by a two-dot chain line 11g 'in the drawing to stop the pallet 20.
[0034]
  The pallet 20 is provided with positioning holes 21 at, for example, four corners. On the other hand, the pallet 20 can be moved up and down by a lifting device 11f such as an air cylinder below the sub-CV 11, and the pallet 20 The positioning convex portion 11 i to be inserted into the positioning hole portion 21 is provided. The positioning hole 21 may be a right cylindrical shape. However, as shown in the figure, the lower conical cylindrical portion is formed by forming the lower portion into a conical cylindrical portion and the upper portion having a right cylindrical portion. As a guide for the positioning convex portion 11 i, the positioning convex portion 11 i can be smoothly inserted into the positioning hole 21. On the other hand, a flange portion 11j for supporting the pallet 20 is provided below the positioning convex portion 11i, and a stopper 11k is provided above the pallet 20.
[0035]
  Accordingly, the pallet 20 is stopped by raising the stopper 11g, and then the positioning projection 11i is raised and fitted into the positioning hole 21 so that the pallet 20 is positioned. Further, the pallet 20 is leveled by lifting the pallet 20 by the flange portion 11j and bringing the upper surface of the pallet 20 into contact with the stopper 11k. In this way, the pallet 20 is positioned and leveled, and the workpiece support member 70 is positioned and the parts are assembled to the workpiece, as will be described later. The outline of the overall configuration of the transfer assembly apparatus will be described first.
[0036]
  When the assembly of the parts to the workpiece at that position is completed, when the positioning projection 11i is lowered and an assembly work completion button (not shown) is pressed, a work completion signal is sent to the drive means 11f, and the stopper When 11g descends, the pallet 20 starts moving again. However, when the pallet 20 is clogged forward in the traveling direction, it is desirable to prevent the stopper 11g from descending even if the button is pressed. If it does so, it can prevent that pallets 20 interfere.
[0037]
  The first and second pools CV12, 14 have the same configuration as the sub-CV11, and are automatically pooled and carried out.
[0038]
  FIG. 10 is a side sectional view taken along line BB in the main CV 13 of FIG. The main CV 13 has a plurality of pairs of pillars 13a erected at predetermined intervals along the traveling direction, and a rotatable roller 13b is provided on the pillar 13a. A pallet 20 is placed. A motor rotating shaft 13d driven by a driving motor 13c is installed between the pillars 13a, and an endless chain 13f is driven by a sprocket (driving gear) 13e attached to the motor rotating shaft 13d. The chain 13f is provided with hooks 13g at regular pitches, and the hooks 13g are configured to press a push plate 22 suspended from the lower surface of the pallet 20. Therefore, the pallet 20 placed on the roller 13b moves in the traveling direction on the roller 13b when the push plate 22 suspended from the lower surface of the pallet 20 is pressed by the hook 13e. As described above, the hooks 13g are arranged at a constant pitch, and the pallet 20 is forcibly conveyed at each pitch. Applies to processes where the tact (production speed) is determined in line flow work. In FIG. 10, the upper side 13f is a forward chain, and the lower side 13f 'is a return (return) chain.
[0039]
  FIG. 11 shows an enlarged plan view of the direction change CV15 (similar to 16, 17, and 18). This direction change CV15 includes a turntable 15b that is rotatable in a horizontal plane by a rotation shaft 15a, a pair of chain conveyors 15c provided on the turntable 15b, a drive motor 15d for the chain conveyor 15c, and a turntable. And a drive mechanism unit 15e for rotating the 15b. Therefore, the pallet 20 conveyed from the direction of the arrow is transferred to the chain conveyor 15c, and is conveyed to the left side of the chain conveyor 15c by the driving motor 15d, and the pallet 20 comes to the center of the direction change CV15. The drive motor 15d is stopped, and then the drive mechanism 15e is turned 90 degrees to change the conveying direction of the pallet 20.
[0040]
  FIG. 12 shows a side view of the pallet 20. As described above, the push plate 22 that is pushed by the hook 13g provided on the chain 13f is suspended from the center of the lower surface of the pallet 20. Further, on the upper surface of the pallet 20, there is a post 23 that protrudes from the slit 80 a of the floor plate 80 and rises and becomes a mounting member for the pole stand jig 30. The pole stand jig 30 is attached to the post 23. Installed.
[0041]
  When the cross-sectional shape of the post 23 is four or polygonal, the pole stand type jig 30 can be fixed to the post 23 at an angular position in a horizontal plane with the best parts assembly workability with respect to the workpiece. it can. Further, when the cross-sectional shape of the post 23 is circular, the pole stand-type jig 30 can be rotated around the central axis of the post 23, and the direction can be changed depending on the shape of the workpiece, the assembly direction of the parts, and the like. It can be set freely. Note that the post 23 may have a square or polygonal cross-sectional shape so that the post 23 can be rotated with respect to the pallet 20 and can be locked at an arbitrary angle by a lock pin or the like.
[0042]
  The pole stand jig 30 is also shown in FIGS. 1, 2, 3 and 12 described above. The pole stand type jig 30 is attached to the post 23 and extends in a horizontal direction and a traveling direction, and a second horizontal member extending in a horizontal direction and a right angle direction from an end of the first horizontal member 31. This is a double L-shape having a member 32 and a vertical member 33 rising from the end of the second horizontal member 32. A third horizontal member 34 and a vertical plate member 35 are provided at the upper end of the vertical member 33, and a positioning projection 36 is provided on the third horizontal member 34.
[0043]
  An intermediate support 40 is attached to the vertical plate member 35 of the pole stand type jig 30 along a pair of linear guides 37 so as to slide up and down. A through hole 38 is provided in the third horizontal member 34 of the pole stand type jig 30. In addition, a positioning lift 50 is disposed laterally with respect to the traveling direction of the pallet 20 so as to be movable forward and backward toward the lower side of the third horizontal member 34 and freely movable up and down.
[0044]
  The positioning lift 50 includes an elevating device 52 such as an air cylinder having a piston rod 53 inserted into a through hole 38 of the horizontal member 34 on a support member 51. Therefore, the intermediate support 40 slides up and down along the linear guide 37 with respect to the vertical member 35 of the pole stand type jig 30 as the piston rod 53 of the elevating device 52 rises while maintaining an accurate positional relationship. It is configured.
[0045]
  The intermediate support 40 has a vertical member 41, and two vertical members 42, 43 are provided at a predetermined interval below the vertical member 41, and the horizontal members 42, 43 are arranged in the vertical direction. In addition, positioning holes 42 a and 43 a are provided at positions that coincide with the positioning projections 36 provided on the horizontal member 34 of the pole stand jig 30. Therefore, the positioning support 36 is inserted into the positioning holes 42a and 43a by the raising and lowering of the piston rod 53, whereby the intermediate support 40 is positioned in the horizontal direction with respect to the third horizontal member 34. Further, the vertical positioning is performed by the pair of linear guides 37 to perform the lifting operation.
[0046]
  The work set base 60 includes a vertical member 61 and a flange portion 62 inserted between the two upper and lower horizontal members 42 and 43 of the intermediate support 40 below the vertical member 61. In addition, a positioning hole 62a is provided. Therefore, the flange 62 is inserted between the upper and lower horizontal members 42 and 43, and the positioning hole 62a of the flange 62 is made to coincide with the positioning holes 42a and 43a of the horizontal members 42 and 43. Then, the pole stand type jig 30, the intermediate support 40 and the work set base 60 can be positioned by inserting the positioning projections 36 of the pole stand type jig 30 into these holes 42a, 43a, 62a. .
[0047]
  A work support member 70 having a vertical member 71 and a horizontal member 72 is attached to the work set base 60 via a support shaft 63 so as to be swingable about the axis of the support shaft 63. Positioning holes 72 a are provided at a plurality of locations of the horizontal member 72. A positioning jig having a plurality of positioning projections 57 fixed on the support member 51 of the positioning lift 50 and inserted into the positioning holes 72a at the plurality of locations, below the horizontal member 72. An elevating device 54 having a piston rod 55 that supports 56 so as to be movable up and down is provided.
[0048]
  The lifting device 54 is for lifting the piston rod 55, inserting the positioning convex portion 57 into the positioning hole 72a, and adjusting the height position. The workpiece supporting member 70 is positioned by inserting the positioning convex portion 57 into the positioning hole 72a. Reference numeral 64 denotes a lock handle for locking the work support member 70 rotated around the support shaft 63 at an arbitrary rotation position. The workpiece support member 70 is provided with a positioning jig 73 for positioning the workpiece and a lock handle 74 for fixing at the positioning position.
[0049]
  Next, after explaining the workpiece conveying operation of the workpiece conveying and assembling apparatus, the positioning operation will be explained. First, a work such as an AT mission is transferred to the work support member 70 of the pallet 20 on the direction change CV 15 by a transfer robot (not shown). The transfer of the workpiece onto the direction change CV 15 can be performed in a state where the direction change CV 15 faces an arbitrary direction. Thereby, the supply position of the workpiece can be arbitrarily set.
[0050]
  When the workpiece is transferred to the workpiece support member 70, for example, if the direction change CV15 is in the same direction as the sub-CV11 as shown in the figure, the direction change CV15 is the same as the direction shown in the figure. When facing in a different direction, the pallet 20 is transferred onto the sub CV 11 after turning by a predetermined angle so as to face the same direction as the sub CV 11.
[0051]
  The pallet 20 transferred onto the sub-CV 11 is intermittently conveyed by the drive motor 11a sequentially through the drive gear 11b, the chain 11c, and the free roller 11d in the traveling direction (left direction in the figure). The pallet 20 is stopped by the raising of the stopper 11g at a predetermined position while being intermittently conveyed on the sub-CV 11, and in this stopped state, the positioning projection 11i is raised by the elevating device 11h. The pallet 20 is positioned by being inserted into the positioning hole 21. At the same time, the pallet 20 is lifted by the flange portion 11j, and the upper surface of the pallet 20 contacts the stopper 11k, whereby the pallet 20 is leveled.
[0052]
  When the pallet 20 is positioned and leveled, the work support member 70 is positioned. 4A to 4C are schematic configuration diagrams for explaining the positioning operation of the work support member 70. FIG. In the following, description will be given in order.
[0053]
  FIG. 4A shows a positional relationship among the pole stand jig 30, the intermediate support 40, the work set base 60, and the work support member 70 in a standby state such as when the pallet 20 is moving. That is, in this standby state, since the positioning lift 50 does not exist, the intermediate support 40 is positioned on the third horizontal member 34, and the positioning convex portion 36 of the third horizontal member 34 has the intermediate support 40 and the work set base. The pole stand jig 30, the intermediate support 40, and the work set base 60 are positioned by being inserted into the determining holes 42a, 43a, and 62a.
[0054]
  FIG. 4B shows a pole stand type in a state where the pallet 20 is stopped at a predetermined position and the positioning lift 50 is advanced to a position below the third horizontal member 34 and the piston rod 53 is lifted by the lifting device 52. The positional relationship among the jig 30, the intermediate support 40, the work set base 60, and the work support member 70 is shown. That is, in this state, the piston rod 53 is extended by the lifting device 52 and the intermediate support 40 is lifted up, so that the positioning holes 42a, 43a, 62a between the intermediate support 40 and the work set base 60 The positioning convex portion 36 is pulled out, and the work set base 60 is in a free state. Therefore, the flange 62 is in a state in which it can move horizontally. Further, as the positioning lift 50 advances, the positioning convex portion 57 is positioned below the positioning hole 72 a of the work support member 70.
[0055]
  FIG. 4C shows the positional relationship among the pole stand jig 30, the intermediate support 40, the work set base 60, and the work support member 70 when the work support member 70 is positioned. That is, in this positioning state, the piston rod 53 is slowly lowered by the intermediate support lifting device 52, and accordingly, the positioning protrusions are inserted into the positioning holes 72 a of the horizontal member 72 of the workpiece support member 70. By inserting the portion 57, the work support member 70 is positioned.
[0056]
  By positioning the workpiece support member 70, the workpiece W positioned and fixed on the workpiece support member 70 is positioned with high accuracy. In the sub-CV11, parts such as a case and a transmission are pre-assembled with respect to the positioned workpiece. Thus, when the assembly of the parts is completed, the piston rod 53 of the lifting device 52 is lowered, and the positioning lift 50 is retracted from the traveling path. Hereinafter, such a positioning operation is repeated for each stop position of the pallet 20 in the sub-CV 11 to position the workpiece and assemble the parts.
[0057]
  According to the positioning device in the workpiece transfer assembly apparatus described above, the pallet 20 is stopped at a predetermined position, positioned and leveled, and the workpiece support member 70 attached to the pole stand jig 30 is positioned. Even if the work support member 70 attached to the pole stand type jig 30 and the work are separated from each other, the work support member 70 can be positioned with high accuracy, and therefore, the work placed and fixed on the work support member 70 is fixed. Since W can also be positioned with high accuracy, the parts can be press-fitted and fitted to the workpiece W positioned with high accuracy.
[0058]
  Further, as shown in the above embodiment, by attaching the vertical member 71 of the work support member 70 to the intermediate support 40 via the support shaft 63, the work support member 70 is attached to the support shaft 63 with respect to the intermediate support 40. Therefore, the support angle of the workpiece W placed and fixed on the workpiece support member 70 can be freely changed, and the parts can be assembled to the workpiece W. By changing the angle of the workpiece W to an easy-to-work angle position depending on the position and the assembling direction, the assembling work can be carried out more efficiently. In addition, the work support member 70 can be locked by the lock handle 64 so that the work support member 70 can be fixed at a position rotated by a predetermined angle as well as being rotatable about the axis of the support shaft 63.
[0059]
  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the pole stand type jig 30, instead of arranging the first and second horizontal members 31, 32 at right angles as shown in the drawing, the start end of the first horizontal member 31 and the end of the second horizontal member 32 are connected. A single horizontal member to be tied may be arranged obliquely with respect to the traveling direction. Alternatively, the second horizontal member 32 may be omitted, and the vertical member 33 may be raised from the end of the first horizontal member 31.
[0060]
【The invention's effect】
  In the present invention, as described above, the truck, the pallet transported on the truck, the pole stand jig mounted on the pallet, and the pole stand jig are attached to be movable up and down. An intermediate support; a work set base attached to the intermediate support so as to be horizontally movable; and a work support member attached to the work set base. The pallet, the intermediate support, the work set base and the work support member The positioning means are provided, so that the operator can move horizontally to the other side and the side of the track and assemble the parts from any direction with respect to the workpiece. In addition, the workpiece can be positioned with high accuracy, and high-precision parts assembly, press-fitting, and fitting can be performed.
[0061]
  Further, by slidably attaching the intermediate support along the linear guide of the pole stand type jig, the intermediate support can be lifted and lowered in a state of being positioned with high accuracy with respect to the pole stand type jig. Further, by inserting the flange portion of the work set table between the upper and lower horizontal members of the intermediate support, the work set table can be supported by the upper and lower horizontal members of the intermediate support so as to be movable in the horizontal direction.
[0062]
  Also, positioning the intermediate support and the work set base by inserting the positioning convex part of the pole stand type jig into the positioning holes of the upper and lower horizontal members of the intermediate support and the flange part of the work set base Can do.
[0063]
  Furthermore, by inserting the positioning hole portion into the positioning hole portion of the workpiece support member, the workpiece support member, and thus the workpiece placed and fixed on the workpiece support member can be positioned with high accuracy.
[0064]
  In addition, the pallet can be positioned by stopping the pallet with the stopper and inserting the positioning convex portion into the positioning hole of the pallet, thereby positioning the workpiece support member.
[Brief description of the drawings]
FIG. 1 is a schematic front view showing a part of a workpiece positioning device according to an embodiment of the present invention in cross section.
2A is a front view showing in cross section a part of a pole stand type jig, an intermediate support, a work set base, and a work support member in the work positioning apparatus of FIG. 1;
  (B) is a sectional side view along the AA line in the workpiece positioning apparatus of (A).
FIG. 3 is a schematic plan view of an intermediate support, a work set base, and a work support member in the work positioning apparatus of FIG.
FIG. 4A is a front view showing in cross section a part of a pole stand type jig, an intermediate support, a work set base and a work support member in a standby state;
  (B) is a front view showing in cross section a part of a pole stand-type jig, positioning lift, intermediate support, work set base and work support member before positioning,
  (C) is the front view which showed the pole stand type jig | tool at the time of positioning, the positioning lift, the intermediate support, the work set stand, and a part of workpiece support member in the cross section.
FIG. 5 is a schematic perspective view of a workpiece transfer assembling apparatus incorporating the workpiece positioning device of the present invention.
6 is a schematic plan view of a horizontal circulation track in the workpiece transfer assembly apparatus of FIG.
7 is an enlarged side cross-sectional view along the line AA in the horizontal circuit track of FIG. 6;
FIG. 8 is a partially enlarged front view of the chain of FIG. 7;
9 is a schematic front view showing a cross section of a part of a stopper and a positioning mechanism part in the sub-conveyor of the horizontal circuit track of FIG. 6;
10 is an enlarged side cross-sectional view along the line BB in the main conveyor of the horizontal circuit track of FIG. 6;
11 is an enlarged plan view of direction changing means in the horizontal track shown in FIG. 6;
12 is a schematic sectional side view of a pallet and a pole stand type jig in the workpiece transfer assembly apparatus of FIG. 1;
FIG. 13 is a perspective view of a conventional workpiece transfer assembly apparatus.
[Explanation of symbols]
  10 Horizontal track
    11f Driving means
    11g stopper
    11h Lifting device
    11i piston rod
    11j Flange part
    11k stopper
  12 1st pool conveyor
  13 Main conveyor
  14 Second pool conveyor
  15, 16, 17, 18 Direction changing means (direction changing conveyor)
  20 palettes
    21 Positioning hole
    23 posts
  30 pole stand jig
    31, 32, 34 Horizontal members
    33 Vertical member
    35 Vertical plate member
    36 Positioning convex
    37 Linear guide
    38 Through hole
  40 Intermediate support
    42,43 Horizontal member
    42a, 43a Positioning hole
  50 Lift for positioning
    52, 54 Lifting device
    53,55 Piston rod
    56 Jig for positioning
    57 Positioning convex part
  60 Workset stand
    62 Flange
    62a Positioning hole
    63 Support shaft
  70 Work support member
    72 Horizontal members
    72a Positioning hole
  80 floor board
    80a slit
    81 Reinforcing member

Claims (4)

A track, a pallet transported on the track, a pole stand jig mounted on the pallet, an intermediate support attached to the pole stand jig so as to be movable up and down, and formed on the intermediate support A work set base having a flange portion inserted between the upper and lower horizontal members so as to be horizontally movable , and a work support member attached to the work set base,
Positioning means is provided for each of the pallet, intermediate support, work set base and work support member, and the intermediate support positioning means is inserted between the upper and lower horizontal members of the intermediate support and the upper and lower horizontal members so as to be horizontally movable. The flange portion of the work set base has a positioning hole portion, and the pole stand type jig has a convex portion inserted into the positioning holes of the upper and lower horizontal members and the flange portion. A workpiece positioning device.   The work positioning apparatus according to claim 1, wherein the pole stand type jig has a linear guide, and the intermediate support is slidably attached along the linear guide. A positioning lift is disposed on the side of the pallet moving direction so that the positioning lift can be moved back and forth and raised and lowered toward the pallet side. The work support member has a positioning hole, and is inserted into the positioning hole. work positioning device according to claim 1 or 2 positioning projection which is characterized in that provided in the positioning lifting. The pallet has a positioning hole, and the track has a liftable stopper for stopping the pallet at a predetermined position and a liftable positioning convex portion inserted into the positioning hole of the pallet. The workpiece positioning apparatus according to any one of claims 1 to 3 , wherein

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