JPH1018089A - Surface treatment equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the sealability of a booth by storing a carrying device in the booth provided on the line so that foreign matters such as oil dripping from the carrying device are not attached to a work in a surface treatment equipment in which the work carried by the carrying device is received by a jig and placed in a treatment tank. SOLUTION: A carrying device 1 comprises a conveyor of the type in which a work W is supported and carried on a carrying rail 10. The carrying rail 10 is cut at a part to be agreed with the elevation/lowering space of a jig 3 above a treatment tank 2, a movable rail 13 capable of being retracted outwardly is provided on the cut part, and the work W to be supported by the movable rail 13 is received by the jig 3. The movable rail 13 may be omitted and the work W to be fed from the carrying rail 10 may be supported only by a supporting member 3c provided on the jig 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing line for transferring a work such as an automobile body by a transfer device, a plurality of processing stations provided, a processing tank disposed at each processing station, and a work being processed at each processing station. The present invention relates to a surface treatment apparatus which enters a tank and performs predetermined surface treatments such as chemical conversion treatment and electrodeposition coating.

[0002]

2. Description of the Related Art Conventionally, as a surface treatment apparatus of this type, a jig for receiving a work from a transfer apparatus is provided at each processing station so as to be movable up and down according to Japanese Patent Application Laid-Open No. 63-229167.
Also, the work is provided so as to be rotatable about a horizontal axis, the work conveyed by the transfer device is received by a jig, and the work is moved into and out of the processing tank by the ascending and descending movement. There has been known an apparatus which is operated to prevent the occurrence of processing unevenness.

In this apparatus, the transfer device is constituted by a hanger conveyor for transferring a work by a hanger having a hanger arm which can be freely opened and closed. The hanger arm is opened on a processing tank and the work is transferred to a jig. ing.

[0004]

In the apparatus using the hanger conveyor as in the above-mentioned conventional example, a booth for covering the processing line from above so that foreign substances such as oil dripping from a hanger rail for suspending the hanger do not adhere to the work. It is necessary to provide a hanger rail above the booth, so that a slit for inserting the upper part of the hanger into the booth must be formed, and the hermeticity of the booth is reduced. In view of the above, an object of the present invention is to provide a surface treatment apparatus capable of improving the degree of sealing of a booth.

[0005]

A plurality of processing stations are provided on a processing line for transferring a work by a transfer device.
A surface treatment apparatus in which a processing tank is arranged at each processing station, and a work is put into each processing tank at each processing station to perform each predetermined surface treatment. According to a first aspect of the present invention, in order to solve the above-described problem, in a device in which a receiving jig is provided so as to be movable up and down and rotatable around a horizontal axis, a work is mounted on a transfer rail. The conveyor consists of a conveyor of the type that supports and transports, and the transport rail is divided at the part corresponding to the lifting space of the jig on the processing tank, and the work is divided into the jig and the longitudinal direction of the transport rail at the divided part of the transport rail. Attach a support member that movably supports
Further, according to the second aspect of the present invention, the transfer device is constituted by a conveyor of a type for supporting and transferring a work on a transfer rail, and the transfer rail conforms to the elevating space of the jig on the processing tank. Part at the same time,
A movable rail is provided at an advance position facing the upstream transfer rail and a downstream transfer rail of the divided portion and at a retreat position outside the elevating space of the jig, and is supported on the movable rail. The workpiece is received by a jig.

According to the first feature, the work sent out from the transfer rail on the upstream side of the divided portion is supported by the support member attached to the jig, and the work is transferred to the jig, and the work is processed. Thereafter, the work is sent out from the support member to the transport rail on the downstream side of the divided portion.

Further, according to the second feature, the work sent out from the transport rail on the upstream side of the dividing portion is supported by the movable rail at the advance position, and the jig receives the work on the movable rail. In this case, if the jig is provided adjacent to the movable rail in the longitudinal direction, and a support member for supporting the work movably in the longitudinal direction of the movable rail is attached, the work can be supported by the jig, The work can be reliably received by the jig. After receiving the work, the movable rail is retracted to the retreat position so that the jig can be moved up and down without interfering with the movable rail. After the work is processed, the jig is raised to a fixed position, and then the movable rail is advanced to the advanced position to support the work with the movable rail, and the work is sent from the movable rail to the transport rail downstream of the divided portion.

According to the present invention, in any of the first feature and the second feature, the transport device is constituted by a conveyor of a type for supporting and transporting the work on the transport rail.
There is no risk of oil or the like from the transfer device dropping onto the work. Therefore, unlike the conventional example using a hanger conveyor, there is no need to provide rails on the upper and outer sides of the booth and suspend the hangers through slits formed in the booth, and the degree of sealing of the booth can be increased.

[0009]

FIG. 1 shows a vehicle body W as a work.
1 shows a processing line for performing various surface treatments such as chemical conversion treatment and electrodeposition coating. A plurality of processing stations S are provided on the processing line, and the transfer device 1 places the vehicle body W in the lateral direction with the longitudinal direction of the processing line in the front-rear direction and the vehicle length direction in the left-right direction. The vehicle bodies W are transported in order, and the vehicle body W is put into the processing tank 2 arranged in each processing station S to perform each predetermined surface treatment.

Each processing station S is provided with a jig 3 for receiving the vehicle body W from the transfer device 1. As shown in FIGS. 2 and 3, the jig 3 includes a pair of front and rear frame members 3a, 3a which are long in the left-right direction, and the right and left ends of both frame members 3a, 3a have rising portions. to, and is positioned on the same horizontal axis, and fixedly pair the times wheels 4 _1, 4 ₂ consisting of the sprocket, each of said times wheel 4 _1,
4 ₂ is a rope 5 _1, 5 ₂ consisting respectively chain and wound.

[0011] In each processing station S, by positioning under the vehicle body transfer space by the conveyance apparatus 1, it is arranged hoist 6 _1, 6 ₂ of the pair back and forth. Then, the ceiling frame 7 ₁ a pair of left and right above the processing line, 7 ₂ bridged and leading and trailing end portions of the rope 5 ₁ on the left was subjected left times wheel 4 ₁ wound of the jig 3 the via guide wheels 8 ₁ of each pair before and provided in the ceiling frame ₇₁ in the left hanging around the processing station S at the left position from the vehicle body conveying space, likewise, the right times wheels 4 of the jig 3 ₂ wound over the right of rope 5 ₂ leading and trailing end portions right roof frame 7 ₂
Hanging around the processing station S in the right position from the vehicle body transfer space through the respective pair of guide wheels 8 ₂ before and provided,
While connected to the hoisting machine 6 ₁ of the front through the guide wheel 9 ₁ each of right and left pair provided on the front lower portion of the handle front end portion of the rope 5 _1, 5 ₂ of the left and right that are hung down to the front station S, rope 5 ₁ of the left and right that are hung down to the rear, 5 ₂ of the rear end portion of the process of the right and left pair provided on rear lower portion of the station S guide wheels 9 ₂ to hoist 6 ₂ of the rear through the Connected.

Thus, both the hoists 6 ₁ and 6 ₂ are connected to the cable 5
_1, if rotated in the 5 _second unwinding direction or winding direction, both rope 5 _1, 5 ₂ both end portions of being taken respectively unwinding or winding, the jig 3 is kept lowered or elevated horizontal position, whereas By rotating both hoisting machines 6 ₁ , 6 ₂ in opposite directions, both ropes 5 ₁ ,
5 ₂ on one end side is fed out the other end side is wound, both times wheels 4 _1, 4 ₂ a jig 3 through is rotated about a horizontal axis.
Thus, since it elevating and rotating the jig 3 by winches 6 _1, 6 _2, structure compared with those for a separate drive source and a drive source for rotation for lifting it is simplified.

Each of the winders 6 ₁ and 6 ₂ may have a winding drum for winding the rope. However, in this case, the winding diameter of the rope is changed due to a change in the winding diameter of the rope caused by feeding and winding. Since the feeding speed and the winding speed of the rope with respect to the rotation speed change, the speed control of the drum becomes complicated. Therefore, in the present embodiment, each of the hoisting machines 6 ₁ and 6 ₂ has a driving wheel 6 b composed of a sprocket that is normally and reversely rotated by a motor 6 a, and each of the ropes 5 ₁ and 5 ₂ derived from the driving wheel 6 b. The end of each of the hoists 6 ₁ , 6 ₁ , via a guide wheel 6 c and a tensioner wheel 6 d urged by a spring (not shown) in a direction away from the guide wheel 6 c.
6 is fixed to the _second mounting bracket 6e, rope 5 _1, 5 ₂ of the delivery rate and winding speed with respect to the rotational speed of the drive wheel 6b is prevented from changing.

In this embodiment, each of the hoists 6 ₁ ,
Since the arranged 6 ₂ below the vehicle body transfer space, hoisting machine 6 _1, foreign substances such as oil dropping from 6 ₂ are not able to adhere to the automobile body W, further, the rope 5 _1, 5 ₂ Is connected to each of the hoists 6 ₁ , 6 ₂ from the left and right outer sides of the vehicle body transfer space and below the transfer space, so that the ropes 5 ₁ , 5 ₂ do not protrude above the vehicle body transfer space. Therefore, the rope 5 _1,
5 adhesion of ₂ from the automobile body W of foreign matter such as oil dropping can be prevented. The hoisting machines 6 ₁ , 6 ₂ are arranged on the left and right sides of the vehicle body transfer space, and the hoisting lines 5 ₁ , 5 ₂ are detoured around the transfer space so as not to protrude above the vehicle body transfer space. It may be connected to the machines 6 ₁ and 6 ₂ .

The transport device 1 includes a pair of right and left transport rails 10, 10 having a plurality of rollers 10a arranged in a row and having a longitudinal length in the front-rear direction.
And a sled portion 11 at both left and right ends of an underframe 11 on which a vehicle body W is mounted on a lower surface thereof.
In FIGS. 11A and 11A, the transfer is performed while being supported on the left and right transfer rails 10 and 10. Note that the transfer device 1 may be configured by a belt conveyor having a transfer rail on which a belt is mounted. In any case, the transport device 1 is connected to the transport rail 1
If it is constituted by a conveyor of a type that supports and transports the vehicle body W on the vehicle body 0, it is possible to prevent foreign matters such as oil dripping from the transfer device 1 from adhering to the vehicle body W. A booth 12 shown in FIG. 2 is provided so as to cover the processing line from above.
The hermeticity of the booth 12 can also be increased by housing the transfer device 1 inside.

Incidentally, each of the transport rails 10 is provided in the processing tank 2.
The upper jig 3 is divided at a portion corresponding to the elevating space. The cylinder 13a advances and retreats to the divided portion of each of the transport rails 10 between an advance position facing between the upstream and downstream transport rails 10 and 10 and a retreat position outside the elevating space of the jig 3. The movable rail 13 to which a plurality of rollers 13b are attached is provided. Movable rail 13
Is configured to enter between the pair of frame members 3a, 3a of the front and rear of the jig 3 from the side, and to support the vehicle body W sent out from the upstream transport rail 10 at the sled portion 11a. .

The jig 3 includes front and rear frame members 3.
a, 3a, a pair of left and right cross beams 3b, 3b are provided.
Each sled portion 11 is positioned adjacent to the front and rear ends of the movable rail 13.
A support member 3c, which includes a pair of upper and lower rollers that movably supports a in the front-rear direction so as to sandwich a from above and below, is mounted. Although not shown, the jig 3 is provided with a clamp member for clamping the vehicle body W on the underframe 11.

Next, the operation of the above embodiment will be described. When the vehicle body W is sent out from the transport rail 10 on the upstream side onto the movable rail 13 at the advanced position, the clamp member provided on the jig 3 clamps the underframe 11, and the jig 3 passes through the underframe 11 via the underframe 11. The vehicle body W is fixed. in this case,
Since the underframe 11 is supported not only by the movable rail 13 but also by the support member 3c provided on the jig 3, the jig 3 and the underframe 1
1, and the underframe 11 can be reliably clamped by the clamp member.

When the jig 3 receives the vehicle body W in this manner, the movable rail 13 is moved to the retreat position, and the jig 3
Can move freely. Then, one of the pair of winders 6 ₁ and 6 ₂ is rotated in the feeding direction and the other is wound in the winding direction, and the jig 3 is turned by 90 ° about the horizontal axis to bring the vehicle body W into the rolled position. In this state, both the hoists 6 ₁ and 6 ₂ are rotated in the unwinding direction to lower the jig 3, and the vehicle body W enters the processing tank 2 in the rolled position. According to this, the tank entry resistance is reduced and the vehicle body W can be entered smoothly.

Thereafter, the jig 3 is rotated by 180 ° in the opposite direction to the above by rotating _{one of} the winding machines 6 ₁ and 6 _{2 in} the winding direction and the other in the unwinding direction.
In this case, the vehicle body W is reversed to a rollover posture in the opposite direction to the above, and by this reversal, the air accumulation in the vehicle interior is eliminated, and the surface treatment is uniformly applied to the vehicle body W.

After the processing, both the hoists 6 ₁ and 6 ₂ are rotated in the winding direction, and the jig 3 is raised while the vehicle body W is in the upside down posture, and the vehicle body W is removed from the processing tank 2. Out of the tank. Then, when the jig 3 has risen to the home position, _one of the two winders 6 ₁ and 6 ₂ is rotated in the unwinding direction and the other is wound in the winding direction, and the jig 3 is rotated by 90 ° to move the automobile body W. Return to horizontal position. Next, the movable rail 13 is moved to the advanced position to support the sled portion 11a, and then the clamp member is unclamped. Then, the next vehicle body W is sent from the upstream transport rail 10 onto the movable rail 13, and With the feeding, the processed vehicle body W on the movable rail 13 is pushed out to the transport rail 10 on the downstream side, and one processing operation is completed.

Although the movable rail 13 is provided in the above embodiment, the support member 3 is attached to the cross beam 3b of the jig 3.
It is also possible to arrange three or more rows of c and transfer the vehicle body W between each of the upstream and downstream transport rails 10 and the jig 3 without providing the movable rail 13.

In the above embodiment, the jig 3 is extended in the left-right direction, that is, in the vehicle length direction, and the rotating wheels 4 ₁ ,
4 ₂ Although it is assumed that fixed to, or the jig 3 left and right divided and be fixed respectively twice wheel.

[Brief description of the drawings]

FIG. 1 is a perspective view of an example of the apparatus of the present invention.

FIG. 2 is a sectional side view of the processing station taken along line II-II of FIG.

FIG. 3 is a plan view of a processing station.

[Explanation of symbols]

W Car body (work) S Processing station 1 Transfer device 2 Processing tank 3 Jig 3c Support member 10 Transfer rail 13 Movable rail

 ────────────────────────────────────────────────── ─── Continued from the front page (72) Inventor Shunichi Kashida 1-10-1 Shinsayama 1 Sayama City, Saitama Prefecture Honda Engineering Co., Ltd.

Claims (3)

[Claims] A plurality of processing stations are provided on a processing line for transferring a work by a transfer device, a processing tank is arranged at each processing station, and the work is put into each processing tank at each processing station, and a predetermined surface is formed. A surface treatment apparatus for performing processing, wherein a jig for receiving a work from a transfer device is provided at each processing station so as to be able to move up and down and to be rotatable about a horizontal axis. It consists of a conveyor of the type that supports and transports the workpiece on the top, and separates the transport rail at the part that matches the lifting space of the jig on the processing tank,
A surface treatment apparatus, comprising: a support member that supports a work movably in a longitudinal direction of the transport rail at a divided portion of the transport rail. 2. A plurality of processing stations are provided on a processing line for transferring a work by a transfer device, a processing tank is arranged at each processing station, and the work is put into each processing tank at each processing station, and a predetermined surface is formed. A surface treatment apparatus for performing processing, wherein a jig for receiving a work from a transfer device is provided at each processing station so as to be able to move up and down and to be rotatable about a horizontal axis. The conveyor consists of a conveyor of the type that supports and transports the workpiece on the upper side. The transport rail is divided at the part corresponding to the lifting space of the jig on the processing tank, and the divided part of the transport rail is located on the upstream side of the divided part. A movable rail that can move forward and backward is provided at the advance position facing between the transfer rail of the downstream side and the transfer rail on the downstream side and the retreat position outside the lifting space of the jig,
A jig receives a work supported on a movable rail. 3. The surface treatment apparatus according to claim 2, wherein a support member for supporting the work movably in the longitudinal direction of the movable rail is attached to the jig adjacent to the movable rail in the longitudinal direction. .