JP4270716B2 - Conveyor for mixed work - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a transfer device applied to, for example, an electrodeposition coating process.
[0002]
[Prior art]
Conventionally, for example, in the manufacture of a tank frame that is a component for motorcycles, when a tank frame that is subjected to electrodeposition coating and a tank frame that is not subjected to electrodeposition coating are transported on a common line, for example, as shown in FIG. A branch point is provided in the upstream line of the electrodeposition tank, line A is used for the work to be subjected to electrodeposition coating, bypass line B is used for the work to which no electrodeposition coating is applied, and downstream of the electrodeposition tank. It is made to merge at the side junction.
[0003]
[Problems to be solved by the invention]
However, when the bypass line B as described above is configured, there is a problem that the facility configuration including the transport device is increased in size, the facility cost is increased, and the transport control is complicated.
[0004]
Therefore, an object of the present invention is to make it possible to transport workpieces having different processing contents on the same line, and to simplify equipment configuration and transport control.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a work conveyance path above a processing tank, and a work that can travel along a traveling rail of the work conveyance path is mixed with a work that is immersed in the processing tank and a work that is not immersed. In the transport device that transports the workpiece, a carrier reversing mechanism is provided in at least a part of the work carrying path above the processing tank, and the work reversing mechanism reverses the work to be immersed in the processing tank within the orthogonal plane of the carrying path. And let it pass through the treatment tank.
[0006]
Then, when the workpiece is conveyed toward the processing tank, the workpiece that is not immersed in the processing tank is caused to travel while maintaining a posture such that the traveling path of the workpiece passes above the processing tank, and About the workpiece | work to immerse, it is made to drive | work by transform | converting into the attitude | position which passes the inside of a processing tank by the carrier inversion mechanism.
[0007]
Here, as the carrier reversing mechanism, for example, by reversing the work by 180 degrees for each carrier, the movement path of the work is changed in the vertical direction, and for example, the center of the reversing axis is set at a position somewhat away from the work. To do.
Moreover, as a processing tank, it can apply, for example to the dipping tank for electrodeposition coating, the dipping tank of a pre-coating process, and other dipping tanks.
[0008]
Further, in claim 2, the carrier reversing mechanism can be reversed together with the traveling rail of the work carrying path.
Thus, if it can be reversed together with the traveling rail of the workpiece carrying path, the workpiece reversing mechanism supported by the carrier can be simply configured.
[0009]
According to a third aspect of the present invention, a pair of carrier reversing mechanisms are provided on the upstream side and the downstream side of the work conveyance path above the processing tank, with the intermediate traveling part interposed therebetween.
Thus, if a pair of carrier reversing mechanisms above the treatment tank are provided on the upstream side and the downstream side, and an intermediate traveling part is provided in the intermediate part, a sufficient immersion time of the workpiece can be ensured, and the immersion process is performed reliably. I can do it.
[0010]
According to a fourth aspect of the present invention, the traveling rail has an upper and lower double rail structure.
In this way, the traveling rail has an upper and lower double rail structure, for example, when a work that is not immersed in the treatment tank is supported above the carrier, and the work that is immersed in the treatment tank is supported below the carrier. In both cases of traveling, it is possible to prevent interference between the carrier and the carrier installed on the floor.
[0011]
That is, in particular, when an intermediate traveling part is provided and both the immersion work and the non-immersed work are to be passed through the intermediate traveling part as in claim 3, for example, the position of the transport frame is set at the intermediate part of the upper and lower rails. When the work is supported above the carrier, the carrier travels on the upper rail, and when the work is supported below the carrier, the carrier travels on the lower rail. As a result, the carrier and the carrier do not interfere with each other.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the accompanying drawings.
Here, FIG. 1 is a side view for explaining an outline of the structure of the transport apparatus, FIG. 2 is a front view thereof, FIG. 3 is an explanatory view of a drive source of a carrier reversing mechanism, and FIG. It is explanatory drawing explaining the relationship of a conveyance mount frame.
[0013]
The conveyance device according to the present invention is applied to a conveyance device that handles a workpiece subjected to electrodeposition coating and a workpiece not subjected to electrodeposition coating on a common line in a manufacturing process of, for example, a tank frame used as a motorcycle part. The equipment is simplified to reduce the equipment cost, and the complicated transfer control can be made unnecessary.
[0014]
That is, as shown in FIG. 1, a work carrying path 2 is provided in an upper part of an electrodeposition tank 1 as a processing tank, and a work W1 to be subjected to electrodeposition coating and electrodeposition along the work carrying path 2. Both of the workpieces W <b> 2 that are not coated can be transported by the carrier 4.
[0015]
For this reason, in the work conveyance path 2 in the upper part of the electrodeposition tank 1, carrier reversing mechanisms 3a and 3b are provided on the upstream side and the downstream side with the intermediate traveling part 5 of the intermediate part interposed therebetween. As shown in FIG. 1 (b), a path along which the workpiece W1 travels in the electrodeposition tank 1 by converting the posture of the workpiece W1 by 180 degrees by the upstream reversing mechanism 3a and flowing the intermediate traveling unit 5 1, the carrier W2 is converted into the original posture again by the carrier reversing mechanism 3b on the downstream side, and the work W2 that is not subjected to electrodeposition coating, as shown in FIG. By passing the positions 3a and 3b as they are, the work W2 is configured to be a path through the upper part of the electrodeposition tank 1.
[0016]
The work carrying path 2 includes traveling rails 7 attached to both side surfaces of the rail support 6, and at least a pair of upper and lower rail supports 6, 6 a, 6 b of the work carrying path 2 in the upper part of the electrodeposition tank 1. Traveling rails 7x and 7y are provided, and the carrier reversing mechanisms 3a and 3b are configured such that the rail supports 6a and 6b can be reversed.
[0017]
That is, as shown in FIG. 3, the reversing motor 8 is fixed to the rail support 6 on the fixed side adjacent to the carrier reversing mechanisms 3a and 3b, and the driving shaft of the reversing motor 8 is used as the carrier reversing mechanisms 3a and 3b. The rail supports 6a and 6b are fixed to the center of the rail supports 6a and 6b. By driving the reversing motor 8, the rail supports 6a and 6b are rotated 180 degrees in a plane orthogonal to the carrying path.
[0018]
The pair of traveling rails 7x and 7y of the reversible rail supports 6a and 6b are in a vertically symmetrical position around the drive shaft of the reversing motor 8, and for example, before reversing, the carrier reversing mechanisms 3a and 3b When the upper traveling rail 7x coincides with the line of the upper traveling rail 7x of the intermediate traveling unit 5, the traveling rail 7x of the carrier reversing mechanisms 3a and 3b after the reversal is below the intermediate traveling unit 5. It is made to correspond to the line of running rail 7y.
[0019]
As shown in FIG. 2, the carrier 4 includes a sliding portion 4 s that is slidably engaged with the left and right traveling rails 7, and a gate-shaped portion 4 m that projects outward in such a manner as to straddle the rail support 6. And a work holding part 4h projecting from the central part of the portal part 4m. The work holding parts 4h can hold the works W1 and W2.
[0020]
On the other hand, the carriage base 9 of the rail support 6 of at least the intermediate traveling unit 5 of the work transport path 2 is erected on the floor as shown in FIG. 2, and supports the intermediate portions of the upper and lower traveling rails 7x and 7y. Whether the workpiece is held by the upper carrier 4 or the lower carrier 4, both the carrier 4 and the carriage base 9 do not interfere with each other.
[0021]
That is, since the carrier 4 and the workpiece W1 are reversed by the carrier reversing mechanism 3a and when the carrier 4 and the workpiece W2 pass in the same posture, both the carrier 4 and the transport base 9 do not interfere with each other. The work conveyance path 2 in the upper part of the landing tank 1 has an upper and lower double traveling rails 7x and 7y structure, and if this is a single rail, as shown in FIG. If the carrier 4 is located at the upper position (FIG. 4A), the carrier 4 and the carriage 9 interfere with each other when the carrier 4 is turned downward together with the rail support 6. On the other hand, if the carrier 4 is positioned below the drive shaft of the reversing motor 8 (FIG. 4B), the carrier 4 together with the rail support 6 is used. Considering the case where the inverted toward the supporting portion 9a of the carrier 4 transport platform 9 is to interfere.
For this reason, in the case of a single rail, transfer is impossible depending on the posture of the carrier 4 and the workpiece, and therefore, an upper and lower double rail structure is adopted so that the transfer can be performed regardless of the posture.
[0022]
Next, the operation and the like of the conveying device as described above will be described.
As shown in FIG. 1, when the work held by the carrier 4 is transported from the left side of the figure along the traveling rail 7 to the upstream carrier reversing mechanism 3a, the work is immersed in the electrodeposition tank 1. If the workpiece W1 is to be subjected to electrodeposition coating, as shown in FIG. 1B, the reversing motor 8 of the carrier reversing mechanism 3a is actuated to reverse the rail support 6a by 180 degrees.
Along with this, the postures of the carrier 4 and the workpiece W1 are also changed by 180 degrees, the workpiece is immersed in the electrodeposition tank 1, and the upper traveling rail 7x on which the carrier 4 has traveled until then is an intermediate traveling portion. 5 is connected to the traveling rail 7y below 5.
[0023]
When the carrier 4 travels on the traveling rail 7y below the intermediate traveling unit 5 and reaches the downstream carrier reversing mechanism 3b, the drive motor 8 operates to reverse the rail support 6a and the workpiece is removed from the electrodeposition tank 1. It is pulled up and returns to the original posture. And it is conveyed downstream.
[0024]
Next, in the case of the workpiece W2 that is not subjected to electrodeposition coating, as shown in FIG. 1A, the workpiece W2 held by the carrier 4 moves from the left side of the drawing along the traveling rail 7 to the upstream carrier reversing mechanism. When transported up to 3a, the posture is maintained as it is, and the carrier 4 travels on the travel rail 7x above the intermediate travel unit 5 and is transported straight through the carrier reversing mechanism 3b on the downstream side.
That is, the workpiece W2 passes without being immersed in the electrodeposition tank 1.
[0025]
By the above procedure, both the workpiece W1 immersed in the electrodeposition tank 1 and the workpiece W2 not immersed can be transported, and complicated transport control like the conventional bypass line becomes unnecessary, and the transport path is expanded. Can be prevented.
[0026]
The present invention is not limited to the above embodiment. What has substantially the same configuration as the matters described in the claims of the present invention and exhibits the same operational effects belongs to the technical scope of the present invention.
For example, the treatment tank may be a dipping tank other than the electrodeposition tank, and the type of workpiece is arbitrary.
The carrier reversing mechanisms 3a and 3b do not necessarily need to be provided at two locations, and are provided at only one location, reversed and immersed in the treatment tank, then reversed again on the spot to return to the original posture and transport. May be.
[0027]
【The invention's effect】
As described above, the transfer device according to the present invention is provided with the carrier reversing mechanism in the work conveyance path above the processing tank, the posture is reversed for the work immersed in the processing tank, and the work is not immersed in the processing tank. Since it is transported in a posture, it is not necessary to provide a bypass line as in the conventional case, the transport device can be reduced in size and equipment costs can be reduced, and complicated transport control as in the past can be eliminated. I can do it.
At this time, as described in claim 2, if the carrier reversing mechanism is reversed together with the traveling rail of the work carrying path, the work reversing mechanism supported by the carrier can be simply configured.
If a pair of carrier reversing mechanisms are provided and the intermediate traveling part is caused to travel as in claim 3, the work immersion time can be sufficiently secured, and the immersion treatment can be performed reliably.
In addition, if the traveling rail has an upper and lower double rail structure as in claim 4, it is convenient because interference with the carrier can be prevented even if the carriage is installed on the floor surface.
[Brief description of the drawings]
1A and 1B are side views for explaining the outline of the structure of the transport apparatus, wherein FIG. 1A is an explanatory view when a workpiece is not immersed in an electrodeposition tank, and FIG. FIG. 3 is an explanatory view of the carrier reversing mechanism as viewed from the front. FIG. 4 is an explanatory view illustrating the relationship between the carrier and the carriage in the case of a single rail. Conventional figure [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Electrodeposition tank, 2 ... Work conveyance path, 3a, 3b ... Carrier inversion mechanism, 4 ... Carrier, 5 ... Intermediate travel part, 6, 6x, 6y ... Rail support body, 7, 7x, 7y ... Travel rail, 9 ... transport platform.

Claims (3)

  A transport device in which a work transport path is provided above the processing tank, and the work immersed in the processing tank is mixed and transported by a carrier that can travel along the traveling rail of the work transport path. In addition, a carrier reversing mechanism that can be reversed together with the traveling rail of the work carrying path is provided at least in a part of the work carrying path above the processing tank, and by this carrier reversing mechanism, the work to be immersed in the processing tank is orthogonal to the carrying path. An apparatus for transporting a mixed workpiece, wherein the apparatus is inverted in a plane so as to pass through a processing tank.   2. The mixing work conveying apparatus according to claim 1, wherein the carrier reversing mechanism is provided in a pair on an upstream side and a downstream side of a work conveyance path above the processing tank with an intermediate traveling portion interposed therebetween. Work transfer device.   3. The mixed work transfer apparatus according to claim 1, wherein the traveling rail has an upper and lower double rail structure.

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