JPH1018088A - Surface treatment equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To elevate/lower and turn a jig by a simple mechanism in a surface treatment equipment in which a work carried by a carrying device is received by the jig, and placed in a treatment tank. SOLUTION: A pair of turning rings 41 , 42 are fixed to a jig 3, and the jig 3 is hoisted by cables 51 , 52 wound around the turning rings 41 , 42 . A pair of hoisting machines 61 , 62 are provided, and one end side of the cables 51 , 52 is connected to one hoisting machine 61 , and the other end side of the cables 51 , 52 is connected to the other hoisting machine 62 . The hoisting machines 61 , 62 are arranged on the side or on a lower part of the work carrying space by a carrying device 1, and the cables 51 , 52 are bypassed in the carrying space so as not to be projected above the work carrying space and connected to the hoisting machines 61 , 62 respectively so that foreign matters such as oil dripping from the hoisting machines or cables are not attached to a work W.

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, a jig is rotatably supported between a pair of elevating frames provided on both sides of a processing tank, and a drive source for elevating each of the elevating frames and a rotation of the jig mounted on the elevating frame. The jig is moved up and down and rotated by the moving drive source.

[0004]

In the above-mentioned prior art, the apparatus for raising and lowering the jig is increased in size, and it is necessary to provide a driving source for rotation in addition to a driving source for raising and lowering. There is a problem that becomes expensive. SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a simple device that can enter and exit a work from a processing tank and can rotate.

[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, a jig to be received is provided so as to be vertically movable and rotatable around a horizontal axis. Then, a pair of rotating wheels composed of sprockets are fixedly mounted, the jig is hung by a pair of ropes each composed of a chain wound around both rotating wheels, and the work station is transported to each processing station by a transfer device. A pair of hoisting machines is disposed at the side or below the transport space, and one end of each of the two cords is one hoist and the other end of each of the cords is the other. Machine and each cable work According to the second aspect of the present invention, a pair of rotating wheels are fixed to the jig on the same axis so as not to protrude over the transfer space. The jig is hung by a pair of four ropes, each of which is wound around each rotating wheel in the opposite direction and one end of which is fixed to each rotating wheel, and transported to each processing station. A pair of hoisting machines are arranged at the side or below the work transfer space by the device, and the four ropes are divided into two sets of two sets of winding directions that match each other, and one set is divided into two sets. The other ends of the two cords are attached to one hoist and the other end of the other set of two cords are attached to the other hoist. The transport space is bypassed so as not to come out.

In any of the above features, when the hoists are rotated together in the direction in which the ropes are fed out, the jig descends and the work enters the processing tank. When the strip is rotated in the winding direction, the jig is raised and the work is taken out of the processing tank, and when both winding machines are rotated in opposite directions, each rotating wheel is rotated to be integral with this. The jig, that is, the work is rotated.

As described above, according to the present invention, the jig can be moved up and down and rotated by a simple mechanism including a pair of a hoist and a cable, and the equipment cost of the surface treatment apparatus can be reduced. Also,
According to the present invention, since the hoist is arranged laterally or below the work transfer space, and each cable is routed so as to bypass the work transfer space, oil or the like from the hoist or the cable is used. Foreign matter can be prevented from dropping onto the workpiece.

[0008]

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.

[0010] 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 hoisting machines 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 hoisting machines 6 ₁ and 6 ₂ may have a winding drum for winding the rope. However, in this case, a change in the winding diameter of the rope caused by the feeding or winding causes the drum to change. 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 the present 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 conveying device 1 includes a pair of right and left conveying rails 10 and 10 having a large number of rollers 10a arranged in a row and having a longitudinal 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 configured with 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.

By the way, each of the transport rails 10 is connected to 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 transport rail 10 between an advance position facing 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 way, 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 two winding machines 6 ₁ and 6 _{2 in} the winding direction and the other in the unwinding direction, and the automobile body W is processed in the processing tank 2.
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, each of the rotating wheels 4 ₁ ,
4 ₂ rope 5 ₁ of one each for, 5 ₂ but are wound in a U-shape, as shown in FIGS. 4 and 5, each each time wheel 14 fixed to both end portions of the jig 3 A pair of ropes 15 ₁ , 15 ₂ are wound around in opposite directions, and one end of each of the ropes 15 ₁ , 15 ₂ is attached to each of the anchor bolts 14 a at symmetric positions of the rotating wheel 14.
It is also possible to fix the jig 3 to each of the rotating wheels 14 with a pair of four ropes for each of the rotating wheels 14 in the same manner as in the above embodiment. In this case, rope and a rope that is wound in the same direction as the rope 15 ₁ and該索Article 15 ₁ one was subjected rotating wheel 14 wound illustrated in other times wheel pair of the above embodiment 5 _1, as well as connected to one of the hoist at 5 _second one similar to the side aspect, at times wheel 14 ₁ wound over the other rope 15 ₂ and該索Article 15 ₂ the same direction for the rotational driving wheel and wrapping the rope by connecting to the other of the hoist in a manner similar to the rope 5 _1, 5 ₂ of the other end of the pair of the above embodiments, as in the above embodiment the jig 3 Can move up and down and rotate. Although the ropes 15 ₁ and 15 ₂ are shown as being composed of chains, they may be wires.

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.

FIG. 4 is a cutaway side view of a rotating wheel portion of another embodiment.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

[Explanation of symbols]

W automobile body (work) S processing station 1 carrying device 2 processing tank 3 jig 4 _1, 4 _2, 14 times wheels 5 _1, 5 _2, 15 _1, 15 ₂ rope 6 _1, 6 ₂ hoist

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

Claims (2)

[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 a process, 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 around a horizontal axis. A pair of rotating wheels composed of sprockets are fixedly positioned on the axis, and the jig is hung by a pair of ropes composed of a chain wound around both rotating wheels, and transported to each processing station. A pair of hoisting machines are arranged at the side or below the transfer space of the work by the device,
One end of each of the two cords is connected to one hoist and the other end of each of the two cords is set to the other hoist so that the cords do not overhang the work transfer space. A surface treatment device, which is connected by bypassing a transfer space. 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 adapted to perform a process, 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 around a horizontal axis. A pair of rotatable wheels are fixedly positioned on the line, wound around each rotatable wheel in the opposite direction, and one end is fixed to each rotatable wheel. And a pair of hoists are arranged at each processing station at the side or below the transfer space of the work by the transfer device,
The four cords are divided into two sets of two cords having the same winding direction, and the other end of the two cords of one set is connected to one hoist and two sets of the other set. A surface treatment apparatus, wherein the other end of the cable is connected to the other winding machine by bypassing the transfer space so that each cable does not protrude above the transfer space of the work.