JP5226204B2 - Work transfer device - Google Patents

Description

  The present invention relates to a workpiece transfer apparatus that transfers a plurality of workpieces in a state where they are arranged at a predetermined interval, and allows assembly work on the workpieces to be performed by flow operations.

  For example, in an assembly line in which parts are assembled and assembled in a work such as an engine, the length of the work transfer device is determined in accordance with the assembly process of the engine, and a long conveyor that matches the length of the assembly line in the factory. A frame is installed. Moreover, in such a workpiece conveyance apparatus, it is comprised so that it may convey in one direction in the state which mounted the engine in the workpiece support stand with the drive motor attached to the conveyor frame. Further, in order to make it easier for the operator to perform the assembling work, foundation work has been performed in which pits are formed on the floor in order to reduce the height of the work jig and the work transfer device is embedded in the floor.

  By the way, when the engine shape is changed or the number of production changes due to the model change of the car, the assembly tact of the engine assembly line is adjusted. In some cases, it is impossible to complete the attachment work or waste wasted time. For this reason, it may be necessary to increase or decrease the assembly process. However, when the conveyor device is composed of the entire assembly line by one long conveyor, if the foundation work is performed and the conveyor is installed on the floor, the length of the assembly line is changed. There is a problem that adjustment is difficult because large-scale foundation work is required. Further, when the return path of the work jig is formed by pits, a larger foundation work is required.

  Therefore, in the unit assembly type conveyor device described in Japanese Utility Model Registration No. 3087191 (Patent Document 1), a chain is formed on both sides of the base between a drive unit and a driven unit having a sprocket rotatable around a vertical axis. Multiple conveyor units equipped with two sets of guides and guide rails are installed symmetrically, endless transport chains are attached to the sprockets of the drive unit and the driven unit, and a transport carriage that moves on the floor is connected to the transport chains. And it is comprised so that an engine may be mounted and conveyed on the conveyance trolley | bogie. In the conveyor device having such a configuration, when adjusting the length, after removing the transport chain from the sprocket, the conveyor unit is increased or decreased to adjust the overall length, and the adjusted transport chain is wound around the sprocket again. To do. That is, the length of the conveyor device can be adjusted relatively easily.

Utility Model Registration No. 3087191

  However, also in the conveyor apparatus of patent document 1, since the whole conveyor apparatus is conveyed with the rotational force of the drive motor which rotationally drives either one of the sprockets, the conveyor apparatus is especially driven by the rotational force of this drive motor. It was inevitable that foundation work was required to firmly fix the floor to prevent it from moving.

  In other words, in the conventional work transfer device, the conveyor device that constitutes the assembly line is composed of one long conveyor, which is installed on the floor after foundation work, so the length of the conveyor can be simplified. There is a problem that it cannot be changed.

  The present invention has been made in consideration of the above problems, and according to the work environment of the worker in each process, the conveyor is moved as necessary, and the length and arrangement of the assembly line are easily adjusted. It is an object of the present invention to provide a work transfer device that can be used.

In order to solve the above-mentioned problem, the present invention is a work transport device including a work support base that supports a work in a plurality of different postures, and a conveyor that transports the plurality of work support bases arranged in the transport direction, the conveyor, said drive motor and a plurality of drive conveyor unit having a drive motor for supplying power for the transport, and movable are intermittently arranged a work supporting table in the conveying direction during the drive conveyor unit der a combination of a free conveyor unit having no is, the conveying speed by the drive conveyor unit constituting the conveyor, that from the upstream of the work flow are gradually slow set toward the downstream Provided is a workpiece transfer device.

According to the said structure, since the conveyor installed in an assembly line consists of several conveyor units (a drive conveyor unit and a free conveyor unit) , adding / deleting a conveyor unit with a change in the number of engine production. Thus, the length of the assembly line can be adjusted easily and easily. Further, since the work support base is transported in a state of being arranged in the transport direction, a driving force is supplied to the work support base on the drive conveyor unit and the work support base moves in the transport direction. On the other hand, the work support base on the free conveyor unit is transported in the transport direction so as to be pushed out to an adjacent work support base.

  Moreover, since the said conveyor is provided with several drive conveyor units, a drive motor can be disperse | distributed and arrange | positioned to each drive conveyor unit, and a workpiece | work can be conveyed with a small drive motor. Further, by suppressing the output of the drive motor to a small level, large foundation work for fixing the conveyor unit to the floor so as not to move is unnecessary. That is, each drive conveyor unit can be easily fixed to the floor, and the installation and transfer of lines can be performed easily and easily.

  In addition, since the workpiece holding means supports the workpiece in a plurality of different postures, the posture of the workpiece can be changed so that the operator can easily perform assembly work on the workpiece, Work efficiency is good. The mechanism for supporting the workpiece in the different postures includes a first rotation means that can rotate about the vertical axis, a second rotation means that can rotate about the horizontal axis, and a height of the workpiece. It is preferable to include elevating means for adjusting the position. Furthermore, it is preferable that the rotating means and the elevating means can be fixed at arbitrary positions, but they may be fixed in stages.

  According to the said structure, the conveyance speed of the workpiece support stand conveyed to a drive conveyor unit in the entrance side (input side) upstream of a conveyor conveys so that a downstream workpiece support stand may be pushed, and this workpiece support stand further Since the work support on the downstream side is transported, it may be slower than the transport speed of the upstream drive conveyor unit alone, but the transport speed of the drive conveyor unit is set slower toward the downstream, A gap is not formed between the placed workpiece supports. That is, the interval between adjacent workpiece support bases can be made constant.

The base of the work support base has a rectangular base plate having the same length as the work transport interval in the transport direction and a width necessary to stably support the work in the left-right direction perpendicular to the transport direction. The drive conveyor unit and the free conveyor unit are a pair of side frames arranged so that the longitudinal direction thereof is parallel to the transport direction, and the height position where the required height is floated from the floor of the side frames. And a plurality of rollers arranged side by side in the conveying direction, and guide rails for guiding the left and right side surfaces of the base plate in such a state that the lower surfaces of the left and right sides of the base plate are brought into contact with the rollers. (Claim 2 ).

According to the above-described configuration, since the base plate has a sufficient size, even if the conveyor conveys the workpiece support table at the minimum height position from the floor, the workpiece support table can move the workpiece to the operator. Therefore, it can be conveyed in a state instructed stably at a height position where it is easy to work. Further, since each drive conveyor units and free conveyor unit is intended to arrange the rollers in a position lifted by the height required from the floor, and very stable because the center of gravity is in the lower position, the drive conveyor unit and The free conveyor unit can be stably installed on the floor by a simpler method.

  In addition, since the work support base is provided with a base plate on the conveying surface of the belt, the work is stabilized at a height suitable for the work so that the efficiency of the assembling work by the user can be kept high. Can be held. It is also possible to form a scaffold for an operator to board the base plate, thereby enabling the operator to perform assembly work on the workpiece while stabilizing the relative positional relationship with the workpiece. .

The drive conveyor unit preferably has a drive force transmission shaft axis is allocated to a plurality of rollers the rotational force from one driving motor while being arranged parallel to the conveying direction of the workpiece (claim 3 ).

  According to the said structure, although it is a simple structure, the rotational force from one drive motor can be distributed equally. That is, it is possible to carry out the stable conveyance.

Downstream after the conveyor, it carries the work supporting table that is transported by the drive conveyor unit or the free conveying unit upstream, rotated in accordance with the conveying direction of the drive conveyor unit or the free conveyor unit on the downstream side it is preferable to provide a diverter for unloading the drive conveyor unit or the free conveyor unit side (claim 4).

According to the said structure, since the conveyance direction of a conveyor can be changed within one workpiece conveyance apparatus, the assembly line by a workpiece conveyance apparatus can be formed freely.

Alternatively, the conveyor, upstream the drive conveyor unit or the free and loading unit for conveyor unit carries the work supporting table that is transported by the drive conveyor unit of the workpiece support was carried downstream or the free conveyor unit a transfer unit for transferring the upstream end of, preferably comprises a diverter having a unloading unit for unloading in accordance with the conveying direction of the drive conveyor unit or the free conveyor unit on the downstream side (claim 5).

  According to the said structure, since a conveyance direction can be changed to a right angle or substantially right angle, a line can be formed using a narrow space effectively.

By interposing the diverter, the conveyor is conveying the workpiece in the conveying direction of the plane substantially U-shape with, thereby it is preferable to close the transport end point and the conveyance start point by the conveyor (claim 6 ).

According to the above configuration, since the transfer start point and the transfer end point of the workpiece transfer device are brought close to each other, the work of transporting the workpiece support to the transfer start point after transferring the workpiece to the transfer end point using the conveyor is as light as possible. The flow of the work transfer device can be improved. Moreover, space saving can be achieved by making the configuration of the assembly line substantially U-shaped.

  As described above, according to the present invention, when the conveyor is installed on the floor, there is no need for foundation work, so that the assembly line can be installed and moved easily and easily. Therefore, the length of the workpiece transfer device can be easily adjusted in accordance with the change in the number of workpieces produced and / or the assembly process for the workpieces, and the length of the assembly line can be changed and installed. .

  Moreover, since the installation of the conveyor with respect to a floor can be stabilized by forming the height of a conveyor as low as possible, installation of a workpiece conveyance apparatus can be performed more easily.

By connecting the drive conveyor unit and the free conveyor unit so that the configuration of the assembly line is not only a straight line but also a substantially L shape or U shape in plan view, the limited space in the factory can be used effectively. Thus, it is possible to form a work assembly line. In addition, by forming the workpiece transfer device in a substantially U shape so that the transfer start point and transfer end point of the workpiece transfer device are close to each other, the workpiece support table that has finished transferring the workpiece is not moved greatly. The next workpiece can be transported using the support table.

  FIGS. 1-12 is a figure which shows the structure of the workpiece conveyance apparatus 1 which concerns on 1st Embodiment of this invention. As shown in FIG. 1, a workpiece transfer apparatus 1 according to the present invention places, for example, workpiece support tables 2A, 2B... Supporting an engine as workpieces w, and these workpiece support tables 2A, 2B. And a conveyor 3 to be conveyed.

  The conveyor 3 has a plurality of drive conveyor units 4A, 4B... Having a drive motor 23 for supplying power for conveyance, and is intermittently disposed between these drive conveyor units 4A, 4B. Are combined with free conveyor units 5A, 5B,. In the following description, when it is not necessary to distinguish between them, the drive conveyor units 4A, 4B,... And the free conveyor units 5A, 5B, are referred to as the drive conveyor unit 4 and the free conveyor unit 5, respectively. Units 4 and 5. Each of the conveyor units 4 and 5 is formed to be short enough to be easily added or removed when the length of the conveyor 3 is adjusted. For example, the total length is 2 m.

  2-5 is a figure explaining the relationship between the workpiece | work support stand 2 and the conveyor 3 of the workpiece conveyance apparatus of this invention. In FIGS. 2 to 4, only the pair of driving conveyor units 4 and the free conveyor unit 5 are extracted and their configurations are shown.

  In order to stably support the workpiece in the left and right direction Y orthogonal to the conveyance direction X and the same length L as the workpiece conveyance interval in the conveyance direction X in the conveyance direction X at the base, the workpiece support base 2 A rectangular base plate 10 having a width W required for the base plate, elevating means 11 standing at the center of the base plate 10, and a turntable 12 attached to the elevating means 11 so as to be rotatable about a vertical axis P. And a support arm 13 which is erected on the turntable 12 and is bent in a substantially U shape, and a work w is locked at the upper end of the support arm 13 and is rotatable around the horizontal axis Q. And supporting means 14 for supporting. In other words, the workpiece support 2 is configured to support the workpiece w in a plurality of different postures that facilitate the assembly work by the operator.

  The area of the base plate 10 is large enough to stably support the workpiece w when the workpiece w is conveyed in a state of being supported at a height suitable for assembly work.

  The elevating means 11 includes an air cylinder that adjusts the height position of the work w to a height suitable for assembly work by an operator, and is configured to hold the work w at an arbitrary height position by the operator's operation. ing. Similarly, the rotation angle of the turntable 12 can be changed to an arbitrary angle by an operator's operation, and the rotation angle can be fixed using fixing means according to an arbitrary form.

  The support arm 13 includes a base portion 13a made of a steel material and an arm portion 13b that is detachably attached to the base portion 13a and formed in a shape that matches the work w. That is, the support arm 13 is configured to support the workpiece w at two points so as not to interfere with the assembling work and to hold the work w at a position floating from the turntable 12.

  The support means 14 includes a pair of engaging portions 14a and 14b, and the workpiece w from the engaging portions 14a and 14b in a state in which the engaging portion 14a is engaged with a corresponding engaging portion (not shown) of the workpiece w. A locking piece 14c that holds and holds so as not to come off is provided, and a support lock lever 14d that operates the withdrawal and withdrawal of the locking piece 14c.

The drive conveyor unit 4 is made up of a pair of side frames 20A and 20B which are made of a long metal plate and are arranged so that the longitudinal direction thereof is parallel to the transport direction X, and the bottoms of the side frames 20A and 20B A plurality of bottom plates 20C that are connected with an interval corresponding to the width W of the plate 10 and a plurality of side plates 20A, 20B arranged side by side in the transport direction X at a height that is lifted from the floor F by a required height. The base 21 in a state where the rollers 21A and 21B (hereinafter referred to as the roller 21 when there is no need to distinguish between them) and the lower surfaces of the left and right sides of the base plate 10 are mounted on these rollers 21. Guide rails 22 for guiding the left and right side surfaces of the plate 10, one drive motor 23 for supplying a rotational force for driving each roller 21, and rotation of the drive motor 23 And a driving force transmission mechanism 24 for uniformly transmitting the force to the rollers 21.

  At appropriate positions of the side frames 20A and 20B, a height adjusting unit 20d for adjusting the height and level of the drive conveyor unit 4 installed on the floor F and a fixing unit 20e for fixing the conveyor unit 4 to the floor F are provided. Forming. That is, an anchor is driven into a hole 20h provided in the fixing portion 20e or a screw or the like is inserted to fix it to the floor F.

  The rollers 21A and 21B are formed on the inner surfaces of the side frames 20A and 20B, and are rotatably attached so that the rotation shafts penetrate the outer surfaces of the side frames 20A and 20B. It is comprised so that rotation drive is possible from the outside.

6 to 10 show the configuration of the drive conveyor unit 4.
As shown in FIGS. 6 to 10, the roller 21 is configured to be pivotally supported around a horizontal axis. Moreover, as shown in FIG. 10, it has a shaft core which penetrates side frame 20A, 20B, and is rotationally driven from the outer side of a side frame. These rollers 21 are arranged at a height position that is lifted from the floor F by a necessary height. In addition, the height position which floated only the required height here is a position where the roller 21 is arranged as low as possible. As shown in FIG. 9, in this embodiment, the conveyance formed at the upper end of the roller 21. This is a low-bottom conveyor configured such that the height h of the surface is 125 mm from the floor F.

  The guide rail 22 is attached to the upper surface of the side frames 20A and 20B with a width that is somewhat wider than the width W of the base plate 10. An introduction portion 22a having a gradually increased width is formed.

  The drive motor 23 is rotated at an arbitrary rotation speed by a control circuit such as an inverter, and the rotation speed of the drive motor 23 is changed from the transfer start point St to the transfer end point Ed of the conveyor 3 shown in FIG. It is set so that it gradually becomes slow from the upstream of the flow of w toward the downstream.

  The driving force transmission mechanism 24 includes a pair of driving force transmission shafts 24a and 24b disposed on the outer sides of the left and right side frames 20A and 20B so that the axis is parallel to the conveyance direction X of the workpiece w, and driving force transmission. A pair of left and right rollers 21 are interlocked by gears so that power is transmitted between the bevel gears 24c provided in the portions corresponding to the rollers 21 on the shafts 24a and 24b and the left and right driving force transmission shafts 24a and 24b. Left and right connecting shaft 24d. The drive motor 23 is connected to the drive force transmission shaft 24 by a gear near the right and left connection shaft 24c.

11 and 12 show the configuration of the free conveyor unit 5.
As shown in FIGS. 11 and 12, the free conveyor unit 5 is configured by removing the drive motor 23 and the power transmission mechanism 24 from the configuration of the drive conveyor unit 4, and is a roller that is rotationally driven by the drive motor 23. Instead of 21, a plurality of rotatable rollers 26 arranged in the transport direction X are provided at a height that is lifted by a necessary height from the floor F of the side frames 20 </ b> A and 20 </ b> B. Reference numerals 20F and 20G denote auxiliary frames which are arranged inside the side frames 20A and 20B and each roller 26 is arranged between the side frames 20A and 20B. Therefore, the free conveyor unit 5 makes the workpiece support 2 mounted thereon freely movable in the transport direction X.

  Further, the height adjusting portion 20d and the fixing portion 20e of the free conveyor unit 5 are formed integrally with the bottom plate 20C. Since the other points are almost the same as those of the drive conveyor unit 5, the same reference numerals as those in FIGS.

  The workpiece transfer apparatus 1 configured as described above includes a plurality of drive conveyor units 4 and a plurality of free conveyor units 5 arranged between the drive conveyor units 4 and one conveyor unit 4, respectively. By connecting 5, the free conveyor unit 5 is provided intermittently between the drive conveyor units 4. As a result, the load applied to each drive conveyor unit 4 can be reduced, and the length of the conveyor 3 can be freely adjusted.

That is, as shown in FIG. 13, the length of the conveyor 3 can be easily extended by further connecting the drive conveyor unit 4E and the free conveyor units 5E and 5F. Further, by connecting a plurality of free conveyor unit 5 with respect to a single drive conveyor unit 4, it is also possible to increase the length of the conveyors 3 without increasing the number of drive motor 23. That is, the number of free conveyor units 5 that are intermittently inserted between the drive conveyor units 4 is not necessarily one.

  Conversely, as shown in FIG. 14, the entire length of the conveyor 3 can be easily shortened by removing the free conveyor unit 5D. That is, it is also possible to arrange a plurality of driving conveyor units 4 continuously and intermittently arrange the free conveyor units 5 between them.

  In addition, as shown in FIG. 15, drive conveyor units 4A and 4B may be arranged at the upstream end and the downstream end of the long free conveyor unit 5A ', respectively. In this case, the number of drive conveyor units 4A and 4B constituting the conveyor 3 can be minimized.

  Further, since the work support bases 2 are transported in a state of being closely arranged in the transport direction X, the work support base 2 on the downstream side is transported while being pushed by the work support base 2 on the upstream side. . Therefore, even if the conveyor 3 is not only the drive conveyor unit 4 having the drive motor 23 but also the free conveyor unit 5 having no drive motor 23 is intermittently arranged, the work is not performed in all parts on the conveyor 3. The support table 2 can be conveyed.

  Further, since the drive conveyor unit 4 is distributed on the conveyor 3 and the free conveyor unit 5 is intermittently disposed between the drive conveyor units 4, the driving force for conveyance is driven by the drive conveyor unit 4. The workpiece is transferred to the workpiece support 2 mounted on the upper side and the workpiece support 2 arranged closely to the free conveyor unit 5 adjacent to the downstream side of the drive conveyor unit 4. Therefore, the output torque of each drive motor 23 can be kept low, and the drive motor 23 can be downsized accordingly. Further, when the drive conveyor unit 4 is fixed to the floor F, it is not necessary to supply power for conveyance to the entire conveyor 3, so that it can be fixed by a simpler method than in the prior art.

  That is, when the conveyor unit 4 is installed on the floor F, each conveyor unit 4 is fixed to the floor F by driving anchors into the holes 20h of the fixing portions 20d provided at appropriate positions of the conveyor units 4 and 5. The fixing portion 20d may be fixed not only by anchors but also by simpler means such as screws.

  In the connection part of adjacent conveyor units 4 and 5, it connects so that it may not position-shift in the left-right direction between adjacent conveyor units 4 and 5, and is arrange | positioned on a straight line. In this way, a plurality of conveyor units 4 and 5 can be connected to form the conveyor 3 whose length can be easily changed as necessary. Further, the drive motors 23 of the adjacent drive conveyor units 4 are connected in parallel by a power line (not shown), so that a plurality of drive motors 23 can simultaneously supply power using one power circuit. It is conceivable that the rotational speed of the drive motor 23 is adjusted by an inverter (not shown) provided in each, but a speed change mechanism for adjusting the rotational speed is provided between the drive motor 23 and the power transmission mechanism 24. Thus, the flow of the workpiece w may be gradually slowed from the upstream to the downstream.

  On the other hand, the work support base 2 is engaged with the support means 14 by placing the work support base 2 engaged with the work w on the transfer start point St of the conveyor 3 by the conveyor 3. The workpiece w can be transported in a predetermined transport direction X. At this time, by placing the side surface of the base plate 10 so as to be guided by the left and right guide rails 22, the transport direction X can be regulated. In addition, since the introduction part 22a is provided in the guide rail 22, even if it may shift | deviate to some extent in the connection part of each conveyor unit 4 and 5, the workpiece | work support stand 2 is conveyed without colliding with the guide rail 22. can do.

  In addition, since the conveyor 3 of the present embodiment is a low-floor conveyor, when the operator gets on the base plate 10 of the workpiece support table 2 being conveyed, the relative positional relationship between the operator and the workpiece w is determined. It is possible to stop. That is, the worker can easily perform the assembling work on the work w. Further, the work support base 2 supports the work w in a plurality of different postures and supports the work w in a state of being floated at a high position with respect to the base plate 10 and the turntable 12. Work efficiency is good.

  By supporting the center of gravity of the workpiece w or a position slightly higher than the center of gravity at two points by the support means 14, the workpiece w can be stably supported. Moreover, since the instruction lock lever 14 for operating the locking piece 14c for retaining and holding the workpiece w is provided, the workpiece w is not detached from the support means 14 when the workpiece w is supported in any posture.

  FIG. 16 is a diagram showing a configuration of a workpiece transfer apparatus 1A according to the second embodiment of the present invention. The workpiece conveyance device 1A shown in this embodiment is different from the workpiece conveyance device 1 of the first embodiment in that the conveyor 3 conveys the workpiece support 2 in the conveyance direction Xa on the upstream conveyor units 4A, 5A, 4B, The direction changer 6 which carries in the workpiece support 2 conveyed by 5B and 4C, rotates in accordance with the conveyance direction Xb of the downstream conveyor units 4D, 5D, 4E and 5E, and then carries it out to the downstream conveyor unit. It is a point provided with. Since other configurations are the same as those of the first embodiment of the present invention shown in FIGS. 1 to 14, detailed description thereof is omitted.

  In the workpiece transfer apparatus 1A configured as described above, the workpiece w can be moved in an arbitrary direction according to the needs of the factory forming the assembly line by combining the plurality of conveyor units 4 and 5 and the direction changer 6. The conveyor 3 of arbitrary length to convey can be formed. That is, it is possible to flexibly cope with the increase / decrease in the number of workpieces w produced and the adjustment of the production tact.

  FIG. 17 is a diagram illustrating a configuration of a work transfer device 1B according to a third embodiment in which the work transfer device 1 is modified. 17 is different from the workpiece conveyance device 1 of the first embodiment in that the conveyor 3 carries in the workpiece support 2 conveyed by the upstream conveyor units 4A to 4D and 5A to 5C. Part 7a, transfer part 7b for transferring the workpiece support 2 loaded therein to the upstream end of the downstream conveyor units 4E to 4H and 5E to 5G, and the conveying direction of the downstream conveyor units 4E to 4H and 5E to 5G The traverser 7 having a carry-out unit 7c carried out in accordance with Xc is provided as a direction changer. Since other configurations are the same as those of the first embodiment of the present invention shown in FIGS. 1 to 14, detailed description thereof is omitted.

  In the workpiece conveyance device 1B configured as described above, the workpiece support 2 can be conveyed in a substantially U shape in plan view by the conveyor 3, so that the conveyance start point St and the conveyance end point Ed can be brought close to each other. .

It is a figure which shows the whole structure of the workpiece conveyance apparatus which concerns on 1st Embodiment. It is a top view of the said workpiece conveyance apparatus. It is the side view seen from the side surface of the conveyance direction of the said workpiece conveyance apparatus. It is a perspective view of the said workpiece conveyance apparatus. It is the side view seen from the front of the conveyance direction of the work conveyance device. It is a side view of the drive conveyor unit which is a part of the said workpiece conveyance apparatus. It is the top view seen from the front of the conveyance direction of the drive conveyor unit. It is a perspective view of the drive conveyor unit. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a top view which shows the structure of the free conveyor unit which is a part of the said workpiece conveyance apparatus. (A) is CC sectional drawing of FIG. 11, (B) is the side view which looked at the free conveyor unit of FIG. 11 from the illustration right side. It is a figure which shows the modification of the said workpiece conveyance apparatus. It is a figure which shows another modification of the said workpiece conveyance apparatus. It is a figure which shows another modification of the said workpiece conveyance apparatus. It is a figure which shows the whole structure of the workpiece conveyance apparatus which concerns on 2nd Embodiment. It is a figure which shows the whole structure of the workpiece conveyance apparatus which concerns on 3rd Embodiment.

1, 1A, 1B Work transfer device 2 Work support 3 Conveyor 4 Drive conveyor unit 5 Free conveyor unit 6, 7 Direction changer 10 Base plate 21, 26 Roller 22 Guide rail 23 Drive motor St Transfer start point Ed Transfer end point X Transport direction w Workpiece

Claims (6)

A workpiece transfer device including a workpiece support table that supports a workpiece in a plurality of different postures, and a conveyor that transfers the workpiece support table in a state of being arranged in the transfer direction,
The conveyor, said drive motor and a plurality of drive conveyor unit having a drive motor for supplying power for the transport, and movable are intermittently arranged a work supporting table in the conveying direction during the drive conveyor unit der a combination of a free conveyor unit that does not have is,
2. A work transfer apparatus, wherein a transfer speed by each drive conveyor unit constituting the conveyor is set to be gradually slower from upstream to downstream of the work flow . The base of the work support base has a rectangular base plate having the same length as the work transport interval in the transport direction and a width necessary to stably support the work in the left-right direction perpendicular to the transport direction. ,
The drive conveyor unit and the free conveyor unit are placed at a height position where a pair of side frames are arranged so that the longitudinal direction thereof is parallel to the transport direction, and the height of the side frames floats from the floor of the side frames. A plurality of rollers arranged side by side in the transport direction, and guide rails for guiding the left and right side surfaces of the base plate in a state where the lower surfaces of the left and right sides of the base plate are in contact with the rollers. The workpiece transfer apparatus according to claim 1 , comprising: The drive conveyor unit, to claim 1 or 2 having a drive force transmission shaft axis is allocated to a plurality of rollers the rotational force from one driving motor while being arranged parallel to the conveying direction of the workpiece The workpiece transfer device described. Downstream after the conveyor, it carries the work supporting table that is transported by the drive conveyor unit or the free conveying unit upstream, rotated in accordance with the conveying direction of the drive conveyor unit or the free conveyor unit on the downstream side The work conveyance apparatus in any one of Claims 1-3 provided with the direction change machine carried out to the said drive conveyor unit or the said free conveyor unit of the side. The conveyor comprises a loading portion for loading the workpiece support carried by the drive conveyor unit or the free conveying unit upstream, the drive conveyor unit of the workpiece support was carried downstream or upstream of the free conveyor unit The direction change machine which has a transfer part which transfers to an edge part, and a carrying-out part carried out according to the conveyance direction of the said drive conveyor unit or the said free conveyor unit of a downstream is provided in any one of Claims 1-3 . Work transfer device. 6. The workpiece according to claim 4 , wherein the workpiece is conveyed in a substantially U-shaped conveyance direction in plan view using the conveyor by interposing the direction changer, and a conveyance start point and a conveyance end point by the conveyor are brought close to each other. Work transfer device.

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