JP4147907B2 - Work transport support device and work transport support method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a workpiece conveyance support device and a workpiece conveyance support method provided with a support portion that supports a plurality of locations on a workpiece on a carriage that conveys and supports the workpiece.
[0002]
[Prior art]
As an apparatus for conveying body parts of an automobile, there is one described in Patent Document 1.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2000-53041
For example, when supporting a body side in a standing state as a conventional body part, for example, two front and rear support parts for supporting the vicinity of both ends in the longitudinal direction of the vehicle body on the lower side of the vehicle body are provided on a carriage that moves along the conveyance direction. It is set. One of the two support portions is common to each vehicle type, and the other is provided with a plurality of dedicated members for each vehicle type so as to correspond to the longitudinal length of the vehicle body of each vehicle type.
[Problems to be solved by the invention]
However, since the above-mentioned conventional ones are provided with a plurality of other support parts dedicated to each vehicle type, the support parts that are not used are obstructive when performing machining operations such as welding work on the workpiece. Therefore, there is a problem that the machining operation becomes difficult.
[0006]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to make it possible to easily perform a machining operation without interfering with a support portion that supports the workpiece during a machining operation for a workpiece supported and supported.
[0007]
[Means for Solving the Problems]
To achieve the above object, the present invention has, on a carriage for transporting supporting a workpiece, e Bei a support for supporting a plurality of positions relative to the workpiece, at least one of the previous SL plurality of support portions, Provided so as to be movable in the direction of approaching and moving away from other support parts, and provided with fixing means for fixing the movable support part at an arbitrary position in the movement direction . A workpiece transfer support device provided with an external drive mechanism that is detachably connected via a connecting portion and moves the supporting portion , wherein the fixing means fixes the movable supporting portion, The structure is such that the fixed state is released upon receiving the supply of fluid pressure, and the working fluid used for releasing the fixation is supplied from the external drive mechanism through the connecting portion, and the fluid is supplied to the connecting portion to the fixing means. Provide a fluid supply port Write, wherein the external drive mechanism is provided a connecting member for connecting to the connecting portion, the distal end of the connecting member, provided with the arranged fluid supply Prompt and fluid delivery port connected to the fluid supply outlet arrangement It is as.
[0008]
【The invention's effect】
According to the present invention, at least one of the plurality of support portions for conveying and supporting the workpiece is provided so as to be movable in a direction approaching and separating from the other support portions, and is fixed at the moved arbitrary position. As a result, it is possible to handle a plurality of types of workpieces with this single movable support portion, and it is not necessary to provide a plurality of support portions dedicated to various workpieces. There is no, and processing work can be performed easily.
In addition, when the tip of the connecting member of the external drive mechanism is connected to the connecting portion of the support portion, the fluid supply port of the connecting portion and the fluid supply port of the connecting member are connected, so the fixed state of the fixing means is released. This eliminates the need for a dedicated connection time for supplying the fluid, so that the working time can be shortened.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0010]
FIG. 1 is a perspective view of a main part of a work transfer support device showing an embodiment of the present invention, and FIG. 2 is a simplified front view showing a state in which a work W is supported by the work transfer support device.
[0011]
The work W here is a body side that constitutes a vehicle body panel of an automobile. With this body side in an upright state, two parts in the vehicle body longitudinal direction (left and right direction in FIG. 2) on the lower side of the vehicle body 1 and a support portion 3 that can move in a direction approaching and separating from the support portion 1.
[0012]
Each of the support portions 1 and 3 described above is common to a plurality of vehicle types, and is provided on a carriage 7 that moves along a guide portion 5 extending in the left-right direction in FIG. The carriage 7 includes guide rollers 9 provided so as to sandwich the guide portion 5 from above and below at a plurality of locations (here, 3 locations) in the longitudinal direction of the vehicle body. By moving the carriage 7 along the guide portion 5, the supporting work W is transported to a predetermined position, and a processing operation such as a welding operation is performed at the transport position.
[0013]
One support portion 1 is fixed on a carriage 7. As shown in FIG. 1, the other support portion 3 is provided with a linear guide rail 11 extending along the longitudinal direction of the carriage 7, and a movable body 13 is provided on the linear guide rail 11 so as to be movable. On the side of the moving body 13, two workpiece receivers 15 and 17 that protrude upward and receive the workpiece W at the tip thereof are arranged in parallel along the direction intersecting the moving direction of the support portion 3. The workpiece receivers 15 and 17 are selectively used according to the shape of the workpiece W.
[0014]
On the side of the moving body 13 on the moving direction side (the left side of the moving body 13 in FIG. 2), together with the moving body 13, a guide lock 19 serving as a fixing means that is guided by the linear guide rail 11 and moves. Is provided. As shown in FIG. 3 corresponding to the A arrow view (partial cross section) of FIG. 1, the guide lock 19 includes a support protrusion 19 a that protrudes toward the moving body 13 on the upper side. A protrusion 13a is provided below the protrusion 19a.
[0015]
And the through-hole 19b and the through-hole 13b are each formed in the support protrusion 19a and the convex part 13a, The guide pin 21 is inserted into this through-hole 19b, 13b from the upper direction, and both are connected. The connection by the guide pin 21 enables the movable body 13 and the guide lock 19 to move relative to each other in FIG.
[0016]
Although the guide lock 19 is not shown, the linear guide rail 11 is fixed by, for example, sandwiching the linear guide rail 11 from both sides or pressing it downward, and this fixed state is fixed by the air as the working fluid. It is structured to be released upon supply.
[0017]
Further, an external drive mechanism 23 for moving the movable body 13 along the linear guide rail 11 is disposed on the side of the support portion 13, and the side of the support portion 13 opposite to the workpiece receivers 15 and 17 described above. The connecting portion 25 is detachably connected to the external drive mechanism 23. The connecting portion 25 is provided with an air supply port 27 for supplying air to the guide lock 19, and the air supply port 27 and the guide lock 19 are connected by an air supply pipe 29. In FIG. 2, the external drive mechanism 23 is omitted.
[0018]
The external drive mechanism 23 moves the union arm 31 as a coupling member to be coupled to the coupling unit 25 and the coupling arm 31 between the coupling position to be coupled to the coupling unit 25 and the unconnected position from which the coupling is released. A drive cylinder 33 as a connecting member drive means and a support part drive unit 35 as a support part drive means for moving the drive cylinder 33 in the moving direction of the support part 3 are provided.
[0019]
FIG. 4 is a view taken in the direction of arrow B in FIG. 5 showing a state in which the union arm 31 of the external drive mechanism 23 is connected to the connection portion 25 of the support portion 3. A plate 37 is provided, and the support unit drive unit 35 described above is provided on the base plate 37. 6 is a plan view of FIG.
[0020]
1 and 5, the detailed structure of the support unit drive unit 35 is omitted.
[0021]
The support unit drive unit 35 is a ball in which a housing base 39 is fixed on a base plate 37 and screw rods 41 are rotatably supported on support plates 39a erected near the left and right ends of the housing base 39 in FIG. A screw is provided, and a ball guide nut 43 is coupled to the screw rod 41. As shown in FIGS. 4 and 6, a motor 45 is arranged on the side of the housing base 39 opposite to the carriage 7, and a pulley 47 connected to the motor 45 and an end of the screw rod 41 are arranged. The connected pulley 49 is connected by a belt 51.
[0022]
A support bracket 53 is attached to the upper portion of the ball guide nut 43. As shown in FIG. 4, the support bracket 53 protrudes obliquely upward toward the carriage 7, and one end of a fixture 55 provided on the proximal end side of the above-described uniting arm 31 on the protruding distal end side. The side (lower end side) is rotatably attached via a support shaft 57.
[0023]
On the other hand, the drive cylinder 33 described above is rotatably attached to the attachment portion 53 a formed on the side portion opposite to the carriage 7 on the base end side of the support bracket 53 via the support shaft 59. The tip end of the piston rod 61 extending above the drive cylinder 33 is connected to the other end side of the above-described fixture 55 protruding rightward in FIG.
[0024]
At the distal end of the union arm 31, an arm side connecting portion 65 that is connected to the connecting portion 25 of the support portion 3 is provided. The arm-side connecting portion 65 includes a pair of connecting protrusions 65a whose ends are bifurcated so as to sandwich the connecting portion 25 from both sides, and an air feed disposed on the connecting portion 25 is provided between the connecting protrusions 65a. A supply port 65b is provided.
[0025]
An air introduction pipe 67 is connected to the air supply port 65b described above, and the air introduction pipe 67 and the support part 3 are connected in a state where the connecting portion 25 and the arm side connecting portion 65 are connected as shown in FIGS. The air supply pipe 29 on the side is in communication.
[0026]
Further, a stopper 53b extending upward is provided at the tip of the support bracket 53 in the external drive mechanism 23, and when the arm-side connecting portion 65 is connected to the connecting portion 25, the fixture 55 comes into contact with the stopper 53b. Position the connected state.
[0027]
Next, the operation will be described. In the state of FIG. 1, the positions of the connecting portion 25 of the support portion 3 and the arm-side connecting portion 65 of the external drive mechanism 23 coincide with each other in the direction orthogonal to the moving direction of the support portion 3. In this state, the drive cylinder 33 is driven forward to rotate the uniting arm 31 around the support shaft 57 to approach the support portion 3, and as shown in FIG. 5, the arm side connecting portion 65 is connected to the connecting portion 25. Connect to. At this time, the air supply port 65b of the arm side connecting portion 65 is placed on the air supply port 27 of the connecting portion 25, and the air supply port 65b and the air supply port 27 are connected to each other.
[0028]
At this time, the guide lock 19 of the support portion 3 is in a state where the linear guide rail 11 is fixed and locked. In this state, air is introduced into the air introduction pipe 67 from an air supply device (not shown), and the introduced air passes through the air supply port 65b, the air supply port 27, and the air supply pipe 29 to the guide lock 19. Send it in.
[0029]
As a result, the lock of the guide lock 19 with respect to the linear guide rail 11 is released, and the movable body 13 and the guide lock 19 can move on the linear guide rail 11.
[0030]
In this state, by driving the motor 45 of the external drive mechanism 23, the screw rod 41 rotates and the ball guide nut 43 moves along the screw rod 41. Accordingly, the support bracket 53 integrated with the ball guide nut 43 and the uniting arm 31 move in the same manner, and the support unit 3 connected to the uniting arm 31 also moves while being guided by the linear guide rail 11.
[0031]
Then, the above-described motor 45 is driven and controlled so that the workpiece receivers 15 and 17 provided on the support portion 3 are positioned according to the shape of the workpiece W (length along the moving direction of the support portion 3). When the workpiece receivers 15 and 17 are moved to the predetermined positions, the supply of air to the guide lock 19 is stopped, whereby the guide lock 19 locks the linear guide rail 11 and the support portion 3 is moved to the predetermined position. Lock it.
[0032]
When the support portion 3 is locked and fixed, the drive cylinder 33 of the external drive mechanism 23 is driven backward, and the uniting arm 31 is moved backward so as to be in the state shown in FIG. 1 to connect the arm side connecting portion 65 and the connecting portion 25. To release.
[0033]
In this state, as shown in FIG. 2, the lower end of the workpiece W is supported by the support portion 1 on the vehicle body front side of the carriage 7 and the support portion 3 on the vehicle body rear side moved and positioned at the predetermined position. Let Here, in the support portion 3, the workpiece receiver 15 or 17 is selectively used depending on the shape of the workpiece W. Next, the carriage 7 transports the workpiece W to a predetermined processing work position, for example, a welding work position, and performs the welding work here.
[0034]
According to the above-described embodiment, the following effects can be obtained.
[0035]
(1) At least one of the plurality of support parts 1 and 3 (support part 3) for conveying and supporting the workpiece W is provided so as to be movable in a direction approaching and separating from the other support part 1, and moved. In addition, since it is fixed at an arbitrary position, it is possible to cope with a plurality of types of workpieces W by this single movable support portion 3, and it is not necessary to provide a plurality of support portions dedicated to various workpieces along the moving direction. Thus, the problem that the support portion 3 becomes obstructive during a machining operation such as a welding operation can be solved. For example, the welding gun can easily enter and the machining operation can be easily performed.
[0036]
(2) Even when a new vehicle type is added to support a workpiece having a different shape, the support portion 3 only needs to be moved in accordance therewith, so that it is not necessary to modify the workpiece transfer support device.
[0037]
(3) Since the position of the support portion 3 is switched by the external drive mechanism 23, a switching mechanism for each cart 7 is unnecessary, and the cart 7 has a simplified structure, and can prevent an increase in equipment costs.
[0038]
(4) Since the air supply port 25 and the air supply port 65b are connected when the external drive mechanism 23 is coupled to the coupling unit 25 of the support unit 3, air supply when the guide lock 19 is unlocked For this reason, a dedicated connection time is not required, and the working time can be shortened.
[0039]
(5) Since the support portion 3 is provided with a plurality of workpiece receivers 15 and 17 in accordance with the workpiece shape, it becomes a generalized workpiece transfer support device.
[Brief description of the drawings]
FIG. 1 is a perspective view of a main part of a work conveyance support device showing an embodiment of the present invention.
FIG. 2 is a simplified front view showing a state in which a workpiece is supported by the workpiece conveyance support device of FIG. 1;
FIG. 3 is a view taken in the direction of arrow A including a partial cross section of FIG. 1;
4 is a view taken in the direction of arrow B in FIG.
5 is a perspective view showing a state in which an external drive mechanism is connected to a connecting portion in the work conveyance support device of FIG. 1. FIG.
FIG. 6 is a plan view of FIG. 4;
[Explanation of symbols]
W Work 1 Support part 3 Movable support part 7 Dolly 11 Linear guide rails 15, 17 Work receiver 19 Guide lock (fixing means)
23 external drive mechanism 25 connecting part 31 uniting arm (connecting member)
33 Drive cylinder (connecting member drive means)
35 Support unit drive unit (support unit drive means)

Claims (5)

On carriage for transporting supporting a workpiece, e Bei a support for supporting a plurality of positions relative to the workpiece, at least one of the previous SL plurality of support portions, in a direction toward and away from the other support The movable support portion is provided with a fixing means for fixing the movable support portion at an arbitrary position in the moving direction. The movable support portion is detachably connected to the movable support portion via a connecting portion of the support portion. A work conveyance support device provided with an external drive mechanism for moving a support portion, wherein the fixing means releases the fixed state upon receiving fluid pressure while fixing the movable support portion. The working fluid used for releasing the fixation is supplied from the external driving mechanism through the connecting portion, and the connecting portion is provided with a fluid supply port for supplying fluid to the fixing means, while the external driving mechanism In the connecting part A coupling member for binding provided, at the tip of the connecting member, the workpiece transport support apparatus characterized in that a fluid delivery port connected the disposed fluid supply Prompt to the fluid supply port. The moveable support portion, the workpiece a plurality of work conveyance supporting apparatus according to claim 1 Symbol mounting, characterized in that the workpiece receiving and arranged in a plurality of parallel in a direction intersecting with the moving direction corresponding to the shape of. Said movable supporting portion is movable along the linear guide rails disposed on said carriage, said fixing means according to claim 1 or 2, characterized in that fixing and holding the linear guide rail Work transfer support device. The external drive mechanism includes a connecting member connected to the connecting portion of the movable support portion, and a connecting member driving means for moving the connecting member between a position connecting to the connecting portion and a non-connecting position, the connecting member drive means, together with the coupling member, according to any one of claims 1 to 3, characterized in that it comprises a support section drive means for moving the moving direction of the movable supporting part, respectively Work conveyance support device. A plurality of support portions provided on a carriage that supports and conveys a work supports a plurality of locations of the work, and at least one of the support portions of the plurality of locations is in a direction of approaching and separating from other support portions. The movable support portion is movably provided, and the movable support portion is moved to an arbitrary position in a state of being connected to the connection portion of the support portion by an external drive mechanism, and the movable support portion is moved at the moved arbitrary position. The workpiece conveying and supporting method is fixed by a fixing means provided on the fixing means. The fixing means releases the fixed state by receiving supply of fluid pressure in a state where the movable supporting portion is fixed. The connecting portion that supplies the working fluid used for releasing the lock from the external drive mechanism through the connecting portion, and supplies the fluid to the fixing means when the connecting member provided in the external drive mechanism is connected to the connecting portion. Flow of Supply Prompt, workpiece transfer support method characterized by connecting and arranging the fluid delivery outlet fluid feeding port of the leading end of the connecting member to the fluid supply port.

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