JP3540956B2 - Transfer device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a transport device that transports a workpiece that is an object to be processed in a factory, and particularly to a device that performs a reciprocating motion when transporting a workpiece.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a transfer device, for example, a transfer device described in JP-B-63-51911 is known. This conventional transfer device is a device for transferring a work from a first step of performing a first operation to a second step of performing a second operation, and supports the work between these two steps. It has a configuration called back and forth skis. That is, in each of the first step and the second step, a rail member for slidably supporting the ski is installed, and the rail member is supported by the elevating mechanism so as to be able to move up and down. Further, in each of the first and second steps, a configuration called a post for holding and fixing the work at the time of performing the work is provided.
[0003]
According to this conventional apparatus, in a state where the rail member and the ski supported by the rail member are lowered with respect to the post in the first step, the work is sent to the first step, and the work is gripped and fixed by the post, For example, work such as welding is performed. After the work of the first step is completed, the grip by the post is released and the rail member and the ski are raised, and the work is transferred from the post to the ski. In this state, an operating force is input to the ski by an external power device. Then, the ski and the work are moved along the rail member, and are transferred from the rail member in the first step to the rail member in the second step. When the ski and the work have been transferred to the rail in the second step in this manner, the rail member is lowered, the work is transferred from the rail to the post, and the work is gripped and fixed by the post. The work is performed in the procedure of performing the work.
[0004]
[Problems to be solved by the invention]
By the way, the conventional apparatus as described above is used, for example, in a manufacturing process of a side panel of an automobile body. This side panel is usually formed by forming a space between the inner panel and the outer panel and joining them together to form a so-called "monaka" structure. It is common to weld members such as reinforcements.
[0005]
When such a side panel is manufactured by using the above-described conventional technique, for example, in a first step, an operation of attaching an accessory component such as a reinforcement to the inner panel by welding or the like while holding the inner panel with a post is performed. After this, the inner panel is placed on a ski and transported to the second step. After the outer panel is overlaid on the inner panel, the two are welded together to complete the side panel.
[0006]
However, in recent years, as a variation of the side panel as described above, the outer panel is displaced from the middle to the passenger compartment side, and this displaced portion is used as an inner panel.For example, a fender panel corresponding to the outer panel is provided outside the inner panel portion. Welding structures have been proposed.
[0007]
That is, in recent years, various shapes have been desired as the external shape of the side panel. However, in a configuration in which the entire outer surface of the side panel is formed by one outer panel, there is a restriction on the mold opening in press molding. And the degree of freedom in design is reduced. On the other hand, as described above, if a part of the outer panel is used as the inner panel and the fender panel is welded to the outside of this inner panel part, even if the side panel goes around the front and rear of the vehicle body, By forming the fender panel in such a manner, molding becomes possible, and the degree of freedom in design is increased.
[0008]
However, when the above structure is adopted, it is necessary to join members to both sides of the outer panel, that is, it is necessary to join the inner panel to a part of the inner surface of the outer panel and the fender panel to a part of the outer surface. Therefore, the following problem occurs in the manufacturing process.
[0009]
That is, in the case where the operation procedure is such that the operation of joining the inner panel to the upper side of the outer panel is performed in the first step, the fender panel needs to be joined to the lower side of the outer panel in the second step. However, in the case of transport using a conventional ski, a space is required below the outer panel for a rail member supporting the ski to descend. Therefore, the fender panel could not be arranged without interfering with the rail member.
For this reason, conventionally, when transporting the outer panel from the first step to the second step and disposing the outer panel on the fender panel, the outer panel is once transported to the table from the first step, and is lifted upward from the table. Since the transfer is performed by moving the fender panel to a position above the fender panel in the second step, and then lowering the fender panel and setting the fender panel on the fender panel, a table and an overhead type transfer device are provided between the first and second steps However, there is a problem that equipment investment is increased. In particular, the overhead-type transport device needs to provide a structure having sufficient support strength above the line, which is costly.
[0010]
The present invention has been made in view of the above-mentioned conventional problems, and conveys a work to a position above a member to be assembled with a work while using a conventional conveyance device that conveys a work using a ski. It is an object of the present invention to make it possible to carry a workpiece having the above-described structure with a small capital investment.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a first step of performing a predetermined operation on a first work and a second step of transporting the first work to a second work in a standby state and assembling the two. A transport device for transporting the first work between the first post and the first post provided in the first step and supporting the first work at the time of work, and provided in the second step and at the time of work A second post supporting the first work and the second work, a first rail member provided in the first step, and configured to be able to move up and down by a first elevating device, and a second rail coaxial with the first rail member. A second rail member provided in two steps and configured to be able to move up and down by a second elevating device, and a plurality of receiving members for supporting the first work, and transferring from the first rail member to the second rail member Skis that can be configured In the transfer device, among the plurality of receiving members provided on the ski, a receiving member arranged to support a portion of the first work that overlaps the second work is vertically aligned with the second work. The ski is movably held from the regular support position for holding the first work at the overlapping position to a non-interfering position that does not interfere with the second work in the standby state when the second rail member is lowered, and moves to the ski. An interlocking mechanism is provided that moves the holder that can be held from the regular position to the non-interfering position as the ski descends and moves from the non-interfering position to the regular position with the next operation of the ski. It is characterized by.
The work flow of the present invention will be described. In a first step, a first work is supported by a first post to perform a work, and when the work is completed, a first elevating device is operated to operate a first rail member and a first rail member. Raise the ski supported by one rail member. Thereby, the first work is supported by the plurality of ski receivers.
Next, the second rail member in the second step is arranged at the same height as the first rail member, and the second work is supported by the second post in the second step to be in a standby state. Move toward the process. Thus, the ski moves from the first rail member to the second rail member, and the first work moves to the second step. At this time, a part of the first work overlaps the second work in the vertical direction, and a support for supporting this part of the first work is arranged at a regular position and overlaps the second work in the vertical direction. ing.
In this state, when the second lifting device is lowered to move the second rail member, the first work is lowered together with the ski, and the interlocking mechanism accompanying the lowering causes the receiving device to be disposed at the regular support position. Moves to the non-interfering position, whereby the first work overlaps the second work without the receiving tool interfering with the second work, and in this state, both works are supported by the second post.
In this state, the work of assembling the first work and the second work is performed.
[0012]
As described above, in the present invention, the first work can be transported to the upper side of the second work in the standby state in the second process while having a simple configuration using the conventional ski and not using the overhead structure. . Therefore, it is possible to transport the first work on the second work with low capital investment.
[0013]
According to a second aspect of the present invention, in the transport apparatus according to the first aspect, the interlocking mechanism includes a slide support mechanism that slidably supports the receiver with respect to the ski, and a regular support of the receiver. A biasing means for biasing in a position direction, and a cam surface which is erected in the second step and which applies a component force in the sliding direction to the receiver by a relative displacement with respect to the receiver as the second rail member descends. And a guide member provided.
Therefore, according to the second aspect of the present invention, when the second rail member is located at the upper side, the receiving member is disposed at the regular support position by the urging means. When the rail member is lowered, a component force is generated in the sliding direction of the receiving member due to the relative displacement of the receiving member with respect to the cam surface of the guide member, and the receiving member moves to the non-interfering position against the urging force of the urging means. . When the next operation such as returning the ski to the first step is performed, the receiving member is separated from the cam surface, and the receiving member returns to the normal support position by the urging force of the urging means.
As described above, the receiver moves to the normal support position and the non-interference position in conjunction with the elevation of the second rail member without newly providing a driving unit for moving the receiver and a control unit for operating the driving unit. The receiving device can be moved by inexpensive means.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings.
In describing the embodiments, first, a work to be conveyed will be described.
The work is the outer panel 1 as described in the prior art, and FIG. 6 shows an exploded front view thereof. That is, the outer panel 1 constitutes a side panel of an automobile, and has an opening 1a for a front door, an opening 1b for a rear door, and an opening 1c for a window. An inner panel (not shown) is joined to the inner side of the outer panel 1 on the front side near the rear end edge of the rear door opening 1b, and the fender panel is located on the outer side rearward of the rear door opening 1b near the rear end edge. 2 are joined to form a side panel.
[0015]
Next, the transport device according to the embodiment will be described.
FIG. 2 is a side view schematically showing the transfer device according to the embodiment, and FIG. 3 is a plan view schematically showing the transfer device according to the embodiment.
[0016]
In FIG. 2, 101 is a first step, and 102 is a second step.
The first step 101 is a step of assembling an inner panel or a reinforcement (not shown) to the inner surface of the outer panel 1 and fixing the same. Have. A plurality of the first posts 11 are provided on a base 14, and each post 11 has a support surface for supporting the outer panel 1 (not shown but a circle indicated by p1 in FIG. 3). ), And a cylinder 11a driven by air or hydraulic pressure (this cylinder 11a is provided on each post 11, but only a part is shown) to be in contact with the support surface. Is provided with a clamp device (not shown) for gripping the outer panel 1. In FIG. 2, the position indicated by the imaginary line a is the position when the outer panel is gripped by the post clamping device.
As shown in FIG. 3, the first rail member 12 is provided with two rails 12a parallel to the direction in which the line flows (the direction of the arrow), and can be moved up and down by the first elevating device 13. Supported. The first rail member 12 slides along the rail 12a, and the ski 3 provided with a plurality of receiving members 32, 33, and 34 for supporting the outer panel 1 from below is provided in the direction in which the line flows. Is slidably supported. When the first rail member 12 is raised by the first lifting device 13, the outer panel 1 is raised to the position shown by the imaginary line b in FIG. When the ski 12 is lowered, the ski 3 is configured to lower from the position of the outer panel 1 indicated by the imaginary line a.
[0017]
Next, the second step 102 will be described. In this second step 102, the same second rail member 22 as in the first step 101 is provided, and the ski 3 is connected to the first rail member 12 in the first step 101. From the second rail member 22 in the second step 102. The second rail member 22 is supported by a second lifting device 23 similar to that in the first step 101 so as to be able to move up and down. Further, in the second step 102, a plurality of second posts 21 are provided on the base 24. The second post 21 supports the outer panel 1 and supports the rear fender panel 2, and supports the rear fender panel 2 as shown by a circle p2 in FIG. The mounted outer panel 1 is also arranged to support the rear edge of the rear fender panel 2, the periphery of the wheel house, and the periphery of the window opening. As indicated by a circle p3, the upper and lower edges of the front door opening 1a and the rear door opening 1b and the front pillar at the front edge of the front door opening 1a are supported. .
[0018]
The first elevating device 13 and the second elevating device 23 have the same structure and a well-known structure, so detailed description is omitted. However, as shown in FIG. The base 14 (24) and the first rail member 12 (second rail member 22) are rotatably attached to one of the base 14 (24) and the first rail member 12 (second rail member 22). On the other side of the member 22), there are provided two links 13a and 13b slidably supported by slide rails 13c and 13d, and a cylinder 13e for applying a rotating power to the link 13a.
[0019]
Next, the ski 3 will be described in detail.
FIG. 5 is an explanatory view showing the support points of the receivers 32, 33, and 34 provided on the ski 3, and includes a receiver 32 that supports a front pillar portion at the front edge of the front door opening 1a. A receiving member 33 provided between the openings 1a and 1b for supporting the center pillar and a receiving member 34 provided on the rear edge of the rear door opening 1b for supporting the rear pillar are provided. As shown in FIG. 2, the receiving members 32 to 33 are formed of channel-like members and are fixed to the ski 3.
[0020]
On the other hand, the receiving members 34, 34 provided at the tip of the ski 3 are slidably supported in the line flowing direction. That is, FIG. 1 is a side view showing the receiving member 34, and a receiving surface 34 a that supports an edge of the outer panel 1 is formed at a distal end of the receiving member 34, and a base end of the receiving member 34 is The bracket 35 fixed to the tip of the ski 3 is slidably supported in a line flowing direction (horizontal direction in the drawing) by a slide support mechanism 36 including, for example, a rail and a slider, or a bearing and a slider. ing. Further, the receiving member 34 and the bracket 35 are connected by an interlocking link mechanism 37 in which two links 37a and 37b are rotatably connected. A return spring 39 is provided between the bracket 34b and the bracket 35 provided at the base end of the receiving member 34 to urge the receiving member 34 in the direction in which the bracket 35 projects.
[0021]
A pin 37c provided at the center of the interlocking link mechanism 37 is extended laterally, and a guide member 38 is provided at a position vertically overlapping the extended portion. The guide member 38 is erected on the base 24 and has a cam surface 38a for guiding the pin 37c leftward in the figure.
[0022]
The interlocking mechanism 300 includes the interlocking link mechanism 37, the guide member 38, and the return spring 39 described above.
[0023]
Next, the operation of the embodiment will be described.
First, the outer panel 1 is carried from another process to the first process 101, and is supported by the first post 11. At this point, the first elevating device 13 is performing the descending operation, and the first rail member 12 and the ski 3 are arranged at a position below the outer panel 1 that has been transported to the first process 101. In this state, the operation of operating the clamp device of the first post 11 to firmly hold the outer panel 1 and welding an inner panel or the like (not shown) to the outer panel 1 is performed.
[0024]
When the operation is completed in the first step 101, the gripping of the first post 11 by the clamp device is released, and the first lifting device 13 is raised and lowered by a predetermined amount to raise the first rail member 12 and the ski 3. Thus, the outer panel 1 is supported by the receivers 31, 32, 33, and 34 of the ski 3, and moves from the position indicated by the imaginary line a in FIG.
[0025]
On the other hand, in the second step 102, the fender panel 2 is previously supported by the second post 21, and the second elevating device 23 is moved down to move the second rail member 22 to the first step 101. It is raised to the same height as the first rail member 12, that is, the height indicated by the imaginary line in FIG.
[0026]
In this state, when a driving force is applied to the ski 3 toward the second step 102 by a driving device such as an air cylinder or a chain, the ski 3 slides and moves from the first rail member 12 to the second rail member 22. Transfer. When the ski 3 slides to a predetermined position, the slide is stopped and the second lifting device 23 is lowered.
[0027]
At this time, the receiving member 34 at the tip of the ski 3 supports the flange at the rear edge of the rear door opening 1b of the outer panel 1 by the receiving surface 34a, as shown in FIG. Note that the position of the receiver 34 at this time is a normal position.
[0028]
Then, as described above, when the ski 3 is lowered by the lowering operation of the second lifting device 23, the cam surface 38a of the guide member 38 erected on the base 24 as shown in FIG. When the pin 37c of the interlocking link mechanism 37 is hit, the interlocking link mechanism 37 is folded, and the receiving member 34 separates from the flange of the outer panel 1 against the urging force of the return spring 39 as shown. At this time, the receiving member 34 does not overlap the rear flange 2 supported by the second post 21 in the vertical direction, and this position is set as a non-interference position. Further, the receiving member 34 moves to the non-interfering position immediately before the flange of the outer panel 1 overlaps a similar flange (not shown) of the rear fender panel 2, and therefore, the receiving member 34 is moved to the second post 21. The outer panel 1 can be accurately overlapped with the rear fender panel 2 without colliding with the rear fender panel 2 supported by the rear fender panel 2.
[0029]
Further, the ski 3 is returned to the first step in a state where the ski 3 is lowered while the work is being performed in the second step 102. At this time, the pin 37c is moved in conjunction with the separation from the guide surface 38a. Then, the receiving member 34 returns to the normal position shown in FIG. 1A by the urging force of the return spring 39.
[0030]
As described above, in the transport device according to the embodiment, the receiving member 34 provided at the tip of the ski 3 is configured to be slidable, and the sliding operation is performed when the ski 3 is lowered in the second step 102. Is carried out so as not to collide with the rear fender panel 2, so that when the outer panel 1 is transported from the first step 101 to the second step 102, there is no need to provide an overhead-type transport device for suspending the outer panel 1 from above. However, it is possible to apply the present invention to a side panel manufacturing line having a structure as shown in this embodiment only by making a small improvement to a conventional transfer device using skis, and to transfer a work (outer panel 1) having the above structure. Can be achieved with little capital investment.
[0031]
As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and even if there is a design change without departing from the gist of the present invention. Included in the present invention.
[0032]
For example, in the embodiment, a mechanism having no power source is used as the interlocking mechanism, and the mechanism is inexpensive. However, the receiving member 34 may be slid by an actuator such as an air cylinder.
[0033]
【The invention's effect】
As described above, in the transfer apparatus of the present invention, the conventional ski is used and the simple structure without the overhead structure is used. This enables the work to be transported, thereby providing an effect that the first work can be transported on the second work by inexpensive equipment investment.
[0034]
According to the second aspect of the present invention, the receiving member is moved in conjunction with the elevation of the second rail member without newly providing a driving unit for moving the receiving unit and a control unit for operating the driving unit. Since it moves to the regular support position and the non-interference position, the effect that the receiver can be moved by inexpensive means is obtained.
[Brief description of the drawings]
FIG. 1 is a side view showing an operation of a main part of a transfer device of the present invention.
FIG. 2 is a side view schematically showing the transfer device according to the embodiment;
FIG. 3 is a plan view schematically showing a transfer device according to the embodiment.
FIG. 4 is a side view illustrating a main part of the transfer device according to the embodiment;
FIG. 5 is a plan view schematically showing a main part of the transfer device according to the embodiment.
FIG. 6 is a perspective view showing a structure of a side panel to be conveyed in the embodiment.
[Explanation of symbols]
1 outer panel (first work)
1a Front door opening 1b Rear door opening 1c Window opening 2 Rear fender panel (second work)
11 first post 12 first rail member 12a rail 13 first elevating device 13a, 13b link 13c, 13d slide rail 13e cylinder 14 base 21 first post 22 first rail member 23 first elevating device 24 base 3 ski 32 , 33, 34 Receiving tool 34a Receiving surface 34b Bracket 35 Bracket 37 Interlocking link mechanism 37a, 37b Link 37c Pin 38 Guide member 38a Guide surface 39 Return spring 300 Interlocking mechanism

Claims (2)

The first workpiece is transported between a first step of performing a predetermined operation on the first workpiece and a second step of transporting the first workpiece to the second workpiece in a standby state and assembling them. A transport device,
A first post provided in the first step and supporting the first work during work, a second post provided in the second step and supporting the first work and the second work during work,
A first rail member provided in the first step and configured to be movable up and down by a first lifting device;
A second rail member provided coaxially with the first rail member in the second step and configured to be able to move up and down by a second elevating device;
A ski having a plurality of receiving members for supporting the first work and configured to be able to transfer from the first rail member to a second rail member;
In the transfer device provided with
Among the plurality of receiving members provided on the ski, a receiving member arranged to support a portion of the first work overlapping the second work is a first work at a position vertically overlapping the second work. From the regular support position that holds the second rail member to a non-interfering position that does not interfere with the second work in the standby state when the second rail member descends,
An interlocking mechanism is provided for moving the holder movably held by the ski from the regular position to the non-interfering position as the ski descends, and moving from the non-interfering position to the regular position with the next operation of the ski. A transport device characterized by being carried out. The interlocking mechanism is a slide support mechanism that slidably supports the receiving member with respect to skis, an urging unit that urges the receiving member in a normal support position direction, and is provided upright in the second step, 2. The transport according to claim 1, further comprising: a guide member having a cam surface that applies a component force to the receiver in a sliding direction by a relative displacement of the receiver with the lowering of the second rail member. apparatus.

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