KR20200014262A - Surface treatment device and conveying jig - Google Patents

Abstract

The surface treatment apparatus 10 accommodates the treatment liquid Q, and the workpiece 20 hangs downward in the treatment liquid through the surface treatment tank 200 having the upper opening 200A and the upper opening of the surface treatment tank. A conveyance jig 30 which conveys the workpiece 20 along the conveyance direction A, a feeder 260 which feeds the workpiece in contact with the conveyance jig, It has the drive part 270 which provides a driving force to a conveyance jig and convey-drives a conveyance jig, and the guide part 280 which conveys and conveys a conveyance jig by contacting a conveyance jig, and when viewed in plan view, the distance of a guide part and a workpiece holding part L1 is shorter than the distance L2 of the drive part and the work holding part, and is shorter than the distance L3 of the power feeding part and the work holding part.

Description

Surface treatment device and conveying jig

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a surface treatment apparatus for applying a plating treatment or the like to the surface of a workpiece and a conveying jig for conveying the workpiece.

Patent document 1 is disclosing the surface treatment apparatus which apply | coats a plating process etc. to the surface of a workpiece | work, and the conveyance jig which conveys a workpiece | work. The surface treatment apparatus combines a feed rail feeding power to a work through a conveying jig and a guide rail conveying and guiding the conveying jig, and part of the conveying jig is in surface contact with the feed / conveying rail.

On the other hand, Patent Document 2 discloses a so-called cathodic split surface treatment apparatus that enables current control for each work set in the cathode, and Patent Document 3 discloses a structure of a cathodic split surface treatment apparatus and a transfer jig. It is starting.

As disclosed in Patent Literature 1, the surface treatment apparatus includes a region for continuously conveying and a region for intermittently conveying a conveying jig holding a workpiece. As intermittent conveyance is disclosed by patent document 1, the system etc. which push a conveyance jig | tool back by a pusher are employ | adopted, for example. On the other hand, in continuous conveyance, as disclosed in patent document 1, the chain which fixed the toothed block which meshes with the claw provided in the conveyance jig is fixed. In addition, as disclosed in Patent Literature 4, the transfer jig is pushed from the rear to alternately convey the transfer jig by alternate driving of two pushers provided for each of the sections in which the linear transfer path is divided into a plurality. It may be.

Japanese Laid-Open Patent Publication No. 2012-046782 Japanese Laid-Open Patent Publication No. 2009-132999 Japanese Laid-Open Patent Publication No. 2013-011009 Japanese Patent Publication No. 6117891

For example, like the above-described negative electrode split method, the power supply / conveying rail is not used as in Patent Document 1, and as shown in Patent Document 3, the conveying guide for conveying the power supply rail and the conveying jig to feed the work through the conveying jig There is a provision of a guide rail.

In this case, as shown in Patent Literature 3, the surface treatment apparatus has guide rails on both sides of a treatment bath in a plan view, and the conveying jig has horizontal arms on both sides of the work holding part in a plan view. Both ends are supported by the guide rail. For this reason, the width dimension of a conveyance jig is large and a jig becomes large. The width dimension of the surface treatment apparatus is also large and the apparatus becomes large.

Moreover, as in patent document 3, the guide rail which does not have a power feeding function contacts the roller provided in the conveyance jig, and the frictional force which increased according to surface contact like patent document 1 is reducing. Although a conveyance jig carries out continuous conveyance or intermittent conveyance, it is necessary to maintain the precision of the stop position after completion | finish of these conveyance drive. This is because a problem occurs in the conveyance in the next step.

Some aspects of this invention aim at providing the surface treatment apparatus and conveyance jig which can convey a conveyance jig stably, reducing width dimension and miniaturizing.

Several other aspects of the present invention can secure the stop position of the conveying jig after the continuous conveyance or the intermittent conveyance, while reducing the frictional force by bringing the ceiling surface of the guide rail without the power feeding function into contact with the roller provided on the conveying jig. It is an object to provide a surface treatment apparatus and a conveying jig.

(1) One aspect of the present invention,

A surface treatment tank containing a treatment liquid and having an upper opening,

A conveying jig for conveying the workpiece along a conveying direction, the conveying jig including a work holding part for holding the work so as to hang down in the processing liquid through the upper opening of the surface treatment tank;

A feeding part for feeding the workpiece by contacting the conveying jig;

A driving unit which applies a driving force to the conveying jig and conveys the conveying jig;

It has a guide part which contacts with said conveyance jig and conveys the conveyance jig,

In plan view, the distance between the guide portion and the workpiece holding portion is shorter than the distance between the driving portion and the workpiece holding portion and relates to a surface treatment apparatus that is shorter than the distance between the feed portion and the workpiece holding portion.

According to one aspect of the present invention, the conveying jig holding the work can be conveyed stably, continuously or intermittently. Here, in the conveyance jig, the weight of the workpiece holding part is larger than the part to be fed in contact with the power feeding part and the driven part driven by the driving part. Since the distance of a large weight work holding | maintenance part and a guide part becomes short, and the unnecessary moment which acts on a workpiece holding | maintenance part decreases, a conveyance jig can be conveyed stably. In addition, since the useless moment acting on the work holding portion decreases, it becomes possible to reduce the driving force applied to the conveying jig in the driving portion. In addition, as compared with guiding the guided portions of both ends of the conveying jig as in Patent Document 3, the width dimension of the conveying jig is shortened, so that the width dimension of the surface treatment apparatus is also shortened, and the apparatus can be miniaturized.

Here, in one aspect of the present invention, when viewed in a plan view, guide portions may be provided on both sides of the work holding portion as in the structure of Patent Literature 3 (both palatal structure: fixed-fixed beam structure), or as in the structure of Patent Literature 1 The guide portion may be provided only on one side of the workpiece holding portion (cantilever structure). With the double-palm beam structure, the useless moment acting on the work holding portion is significantly reduced. Even in the cantilever structure, since the distance between the workpiece holding portion and the guide portion is short, the useless moment acting on the workpiece holding portion is reduced. At this time, when viewed in a plan view, the guide portion, the driving portion, and the power feeding portion may be provided on one side of the work holding portion, or the driving portion and the feeding portion may be provided on one side of the workpiece holding portion and guided to the other side of the workpiece holding portion. You may provide wealth. The former has a cantilever structure, but in the latter case, one side of the work holding part is supported by the drive part and the power feeding part in plan view, and the other side is supported by the guide part. In this way, the conveying jig can be guided more stably, and the useless moment acting on the work holding part decreases, and the driving force applied to the conveying jig can be reduced in the driving part.

(2) In one aspect of the present invention,

The conveying jig includes a horizontal arm portion to support the work holding portion hanging down,

The work holding part includes a chuck for chucking at least an upper end of the work,

The horizontal arm portion,

A guide part guided to the guide part;

A driven part driven by the driving part;

The feeder may be in contact with the feeder.

In this way, the work holding part includes at least an upper end of the work, a chuck to check the upper end and the lower end of the work as necessary, and has a heavier weight than the guided part, the driven part or the feed part, but the action of the guide part described above. By this, the conveyance jig is conveyed guide stably.

(3) In one aspect of the present invention, the guide portion is disposed above the upper opening of the surface treatment tank, and the drive portion and the feeder portion can be disposed at a position deviated from the upper opening of the upper opening of the surface treatment tank. have.

Since the contact between the guide portion and the guide portion can be brought into contact with the roller, dust due to sliding hardly occurs. Therefore, even if the guide portion is disposed above the upper opening of the surface treatment tank and the dust due to sliding falls into the treatment liquid, the treatment liquid does not become contaminated to such an extent that the quality of the surface treatment deteriorates. Thereby, compared with the case where the guide part is arrange | positioned out of the upper opening of the upper opening of a surface treatment tank, the distance of a guide part and a workpiece holding | maintenance part can be made shorter. On the other hand, grease was applied to the feed / guide rail in order to reduce the frictional resistance when the feed part of the conveying jig and the feed / guide rail were in surface contact as in Patent Document 1. Therefore, since the grease scattered by this feed / guide rail falls in a surface treatment tank, the feed / guide rail was forced to be located in the position which deviated from the upper opening of the upper opening of a surface treatment tank. Grease is unnecessary in the guide portion where the roller contacts.

(4) In one aspect of the present invention, the surface treatment tank may have a cover for reducing the area of the upper opening. By providing the cover, dust or the like generated by the contact of the rollers is prevented from falling into the processing liquid by the cover.

(5) Another aspect of the present invention,

In the conveyance jig which hold | maintains the workpiece | work supplied to a surface treatment apparatus, and conveys the said workpiece along a conveyance direction,

A horizontal arm portion and a workpiece holding portion suspended from the horizontal arm portion,

The work holding part includes a chuck to chuck at least an upper end of the work,

The horizontal arm portion,

A guide part guided to a guide part provided in the surface treatment apparatus;

A driven part driven by a driving part provided in the surface treatment apparatus;

It includes a feed portion in contact with the feed portion provided in the surface treatment apparatus,

In a plan view, it relates to a conveying jig in which the guided portion is disposed closer to the workpiece holding portion than the driven portion and the feed portion.

According to the conveyance jig which concerns on another aspect of this invention, conveyance jig can be guided stably similarly to one aspect of this invention.

(6) Another aspect of the present invention,

A surface treatment tank containing a treatment liquid and having an upper opening,

A conveying jig for conveying the workpiece processed by the surface treatment tank;

A continuous driving unit for applying a continuous conveying force to the conveying jig holding the workpiece disposed in the surface treatment tank and continuously conveying the conveying jig;

An intermittent drive unit for intermittently conveying driving the conveying jig by applying an intermittent conveying force for pushing forward the conveying jig holding the workpiece disposed outside the surface treatment tank forward;

It has a guide part which conveys and guides the said conveying jig,

The conveying jig includes a guide portion guided to the guide portion,

The guide portion,

A roller in contact with the ceiling surface of the guide;

The surface treatment apparatus provided with the brake mechanism which brakes the said roller at least at the time of the stop of the said conveyance jig after an intermittent conveyance drive and a continuous conveyance drive.

According to the surface treatment apparatus according to still another aspect of the present invention, the conveying jig is stopped by the braking force of the brake mechanism at least when the conveying jig is stopped at least after the intermittent conveying drive and after the continuous conveying drive. Stopping at a position other than the position is prevented. Even when the continuous conveying drive is realized by the engagement of the drive member (e.g., tooth block) and the driven member (e.g., claw member), the conveying jig is used to release the engagement of the drive member and the driven member, e.g. For example, the conveying jig is stopped after pushing forward with the pusher. Or even when it carries out continuous conveyance drive by the two drive of the pusher alternately without engaging like patent document 4, a conveyance jig is stopped after pushing forward with a pusher. Therefore, even after the end of continuous conveyance driving, an inertial force acts on the conveying jig in the same manner as after the intermittent conveyance drive completion. Therefore, the conveyance jig is stopped by the braking force of the brake mechanism at least when the conveyance jig is stopped at least after the intermittent conveyance drive and after the continuous conveyance drive. This prevents the conveyance jig from being stopped at a position other than the predetermined stop position by continuously advancing with an inertial force.

(7) In still another aspect of the present invention, the brake mechanism can always brake the roller by a braking force that reduces the inertial force acting on the roller by the intermittent conveyance drive or the continuous conveyance drive. In this way, the conveyance jig can be stopped at a predetermined stop position by the braking force of the brake mechanism at the end of the continuous conveyance drive and the intermittent conveyance drive while enabling the continuous conveyance drive and the intermittent conveyance drive of the conveyance jig.

(8) In another aspect of the present invention,

The roller is rotatably supported through a rolling bearing on an axis fixed to the conveying jig,

The rolling bearing includes an inner ring fixed to the shaft, an outer ring fixed to the roller, and a rolling body held between the inner ring and the outer ring,

The brake mechanism may elastically press the outer ring.

In this way, the brake mechanism can always brake the roller by elastically pressing the outer ring of the rolling bearing.

(9) Another aspect of the present invention,

In the conveyance jig which hold | maintains the workpiece | work supplied to a surface treatment apparatus, and conveys the said workpiece along a conveyance direction,

A horizontal arm portion and a workpiece holding portion suspended from the horizontal arm portion,

The horizontal arm portion,

A guide part guided to a guide part provided in the surface treatment apparatus;

A driven part driven by a driving part provided in the surface treatment apparatus;

It includes a feed portion in contact with the feed portion provided in the surface treatment apparatus,

The guide portion,

A roller in contact with the ceiling surface of the guide;

The conveyance jig provided with the brake mechanism which brakes the said roller.

Since the conveyance jig which concerns on the other aspect of this invention is equipped with the brake mechanism which brakes a roller, it can stop a conveyance jig by a brake mechanism at a predetermined stop position at the time of a stop of a conveyance jig. In addition, it is not necessary to provide the brake mechanism at all of the stop positions existing in the plurality of parts of the surface treatment apparatus.

1 is a schematic plan view of a continuous plating apparatus to which the present invention is applied.
2 is a longitudinal sectional view of a surface treatment apparatus according to an embodiment of the present invention.
3 is a partially enlarged view of FIG. 2.
4 is a perspective view of the conveying jig.
It is a figure which shows the feeding part of a conveyance jig | tool.
It is a figure which shows the positional relationship of the workpiece holding part of a conveyance jig and another member.
It is a figure which shows the modification of the positional relationship of the workpiece holding part of a conveyance jig | tool, and another member.
It is a figure which shows the further another modification of the positional relationship of the workpiece holding part of a conveyance jig | tool, and another member.
It is a figure which shows an example of the brake mechanism of a roller.

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described in detail. In addition, this embodiment demonstrated below does not unduly limit the content of this invention described in the Claim, and all of the structures demonstrated by this embodiment are not necessarily required as a solution of this invention.

1. Overview of Surface Treatment Equipment

First, the whole surface treatment apparatus is demonstrated using FIG. 1 of patent document 1. FIG. 1 is a plan view of a surface treatment apparatus, for example, a continuous plating treatment apparatus. In addition, this invention is applicable not only to the workpiece conveyed continuously but also to plating on the workpiece conveyed intermittently. In the continuous plating processing apparatus 10, a plurality of conveying jigs 30 each holding a workpiece 20 such as a circuit board is circulated in a circular conveyance direction A in the clockwise direction, for example, in FIG. 1. It has a conveyance path 100. In addition, illustration of the some workpiece | work 20 and the some conveyance jig 30 is abbreviate | omitted in FIG.

The circulation conveyance path 100 has a plating bath (surface treatment tank in a broad sense) 200 for surface-treating, for example, plating the workpiece 20 held in each of the plurality of conveying jigs 30, Carrying part 210 which is provided upstream of the circulation conveyance path 100 rather than the plating tank 200, and is carried in to the some conveyance jig 30 of the unprocessed workpiece | work 20, and the circulation conveyance path 100 rather than the plating tank 200. The carry-out part 220 which is provided downstream of () and takes out the processed workpiece 20 from the some conveyance jig 30 is provided.

The circulation conveyance path 100 carries out several conveyances from the 1st linear conveyance path 110 and the 2nd linear conveyance path 120 which are parallel to each other, and from the 1st linear conveyance path 110 to the 2nd linear conveyance path 120. A plurality of conveying jigs 30 from the second straight conveying path 120 to the first straight conveying path 110 and the first reversing device 130 that transmits at least one of the jigs 30 by horizontally rotating. ) Has a second reverting device 140 that transmits at least one of the recursive horizontally.

In this embodiment, the plating tank 200 is provided along the 2nd linear conveyance path 120, and the carrying-in part 210 and the carrying out part 220 are provided in the 1st linear conveyance path 110. As shown in FIG. The circulation conveyance path 100 may further include a pretreatment tank group 230 disposed on an upstream side of the plating tank 200 and a post treatment tank group 240 disposed on a downstream side of the plating tank 200.

The pretreatment tank 230 is in order from the upstream side, for example, degreasing tank 230A, hot-water-rise tank 230B, water rinse tank ( 230C), shower tank 230D, and acid-pickling tank 230E. The post-processing tank 240 is comprised by arranging the shower tank 240A and the water washing tank 240B in order from an upstream side, for example. On the other hand, the number and type of pre-treatment tank group 230 and the post-treatment tank group 240 can be changed as appropriate.

The transfer jig 30 is intermittently conveyed except in the shower tanks 230D and 240A in the pretreatment tank group 230 and the post-treatment tank group 240. For this reason, in the pretreatment tank group 230 and the post-treatment tank group 240, two types of guide rails which convey a conveyance jig 30 are provided. One is the fixed rail 232, 234, 235, 242, 243 for intermittently conveying the conveyance jig 30 in the same process tank. The other is the elevating rails 231, 233, 236, 241 capable of intermittently conveying the conveyance jig 30 across partition walls in different treatment tanks.

In the first and second linear conveyance paths 110 and 120 except for the shower tanks 230D and 240A of the pretreatment tank group 230 and the post-treatment tank group 240, these two types of guide rails and the guide rails may be 1 or more. The conveyance jig 30 intermittently conveys by the pusher (intermittent drive part) which moves several conveyance jig 30 by a unit distance.

In the shower tanks 230D and 240A in the pretreatment tank group 230 and the post-treatment tank group 240, the conveyance jig 30 is intermittently conveyed by the 1st, 2nd last time apparatus 130,140. For this reason, the 1st turning device 130 has the two turning rails 131 and 132 which were integrally driven the previous time, and the 2nd turning device 140 has the two turning rails 141 which are integrally driven the previous time. 142).

The plating bath 200 is provided with a feed / guide rail 201 extending in parallel with the longitudinal direction of the plating bath 200 in a plan view of FIG. 1 at a position deviating from the upper side of the plating bath 200. However, in the present embodiment apparatus, the feed rail and the guide rail are different as described later. The several conveyance jig 30 supported by this rail 201 is arrange | positioned in the plating tank 200, and hold | maintains the workpiece | work 20, respectively. Moreover, the continuous conveying means 400 which continuously conveys the some conveyance jig 30 along the rail 201 is provided along the rail 201. In addition, it carries out similarly to patent document 1 about a continuous conveyance operation | movement.

The circulation conveyance path 100 further has a jig-return conveyance path 150 from the carrying out part 220 to the carrying-in part 210 of the 1st linear conveyance path 110. The jig return conveyance path 150 has two endless chains 151 and 152, for example. The jig return conveyance path 150 has a function of returning the conveyance jig 30 of an empty state from the carrying out part 222 to the carrying-in part 210, and the empty state on the upstream side of the carrying part 210. It has a function to wait for the conveyance jig 30.

2. Structure attached to surface treatment tank

2 is a schematic cross-sectional view of FIG. 1 in a region having a plating bath 200 having an upper opening 200A. The conveyance jig 30 hold | maintains the workpiece | work 20 so that it may hang down in plating liquid Q through 200 A of upper openings of the plating tank 200. FIG.

As shown in FIG. 3 showing an enlarged part of FIG. 2, the continuous plating apparatus 10 is adjacent to the plating bath 200 and has a power feeding portion 260, a driving portion 270, and a guide portion 280. . The power supply part 260 feeds the workpiece | work 20 in contact with the conveyance jig 30. The drive part 270 applies a driving force to the conveyance jig 30, and continuously conveys and drives the conveyance jig 30 in the plating tank 200. As shown in FIG. The guide part 280 contacts the conveyance jig 30, and guides the conveyance jig 30 continuously.

The feeder 260 may include a plurality of feed rails 260A to 260D, for example, when the cathode splitting method shown in Patent Documents 2 and 3 is adopted. On the other hand, the power supply part 260 can be comprised with one feed rail, when the cathode division method is not employ | adopted. These feed rails 260A-260D extend along the 1st direction A (refer FIG. 1) parallel to the longitudinal direction of the plating tank 200. As shown in FIG.

For example, as in Patent Literature 1, the drive unit 270 includes an endless drive member 272 such as a rotation drive member such as a sprocket 271 and a chain driven by the sprocket 271. It may include a tooth block 273 fixed to the endless drive member 272. The endless drive member 272 extends along the first direction A (see FIG. 1) parallel to the longitudinal direction of the plating bath 200. Instead of this, the drive part 270 may include two pushers which are arrange | positioned and alternately driven by each division area as shown in patent document 4, and can employ | adopt another continuous drive system.

The guide part 280 may be formed as a guide rail of at least a rectangular plane, for example, having a flat ceiling surface. The guide rail 280 extends along the 1st direction A (refer FIG. 1) parallel to the longitudinal direction of the plating tank 200. As shown in FIG.

3. Bounce jig

Next, the conveyance jig 30 is demonstrated also with reference to FIG. As shown in FIGS. 2-4, the conveyance jig 30 has the horizontal arm part 300, and the workpiece holding part 340 supported from the horizontal arm part 300 through the vertical arm part 301, and suspended below. . The workpiece holding portion 340 has an upper chuck portion 341 that chucks an upper end portion of the workpiece 20. The workpiece holding part 340 may further have a lower chuck 342 that chucks the lower end of the workpiece 20 as needed. In addition, although the conveyance jig 30 shown in FIG. 4 varies in width and length according to the size of the workpiece | work 20, it is not limited to this.

As shown in FIG. 4, the horizontal arm part 300 extends along the second direction B perpendicular to the first direction (conveying direction) A (intersecting in a broad sense). The horizontal arm 300 is provided with a feed part 310, a driven part 320, and a guided part 330.

The feed portion 310 is a portion fed from the feed portion 260 provided in the plating apparatus 10. The feed part 310 of this embodiment contacts one of the some feeding rail 260A-260D. In this embodiment, the several types of conveyance jig | tool 30 with which the to-be-feeded part 310 was attached to each one of the some part from which position differs with respect to the horizontal arm part 300 in the 2nd direction B is prepared. Each one of the several types of conveyance jig 30 contacts each one of the some feeding rail 260A-260D.

In this embodiment, the structure of the conveyance jig 30 was commonized, and the structure which contacts any one of the some feeding rail 260A-260D was employ | adopted. Therefore, in the conveyance jig 30, as shown in FIG. 4, the support part 311 which supports the feed part 310 is arrange | positioned orthogonally with the horizontal arm part 300. As shown in FIG. The horizontal arm part 300 has a some attachment part (for example, a screw hole) provided in the other position in the 2nd direction B. As shown in FIG. The support part 311 is attached to one of these attachment parts.

As shown in FIG. 4, the support part 311 is provided with at least one contact part 312 which contacts the feed rail 260 (feed rail 260A-260D), for example. 5 shows a supporting structure of the contact portion 312. The feed part 310 has a parallel link mechanism 313 of a quadruple crank chain that connects the support part 311 and the contact part 312 to, for example, two parallel links 313A and 313B. The two links 313A and 313B are always urged to move in the clockwise direction by the torsion coil springs 314 and 314 which are bias members. As a result, the contact portion 312 can be brought into contact with the power supply rail 260 at an appropriate contact pressure.

The driven part 320 is provided with a driving force from the drive part 270 provided in the plating apparatus 10, and continuously conveys and drives the conveyance jig 30. FIG. As shown in FIG. 4, the driven part 320 includes a plurality of claw members 321 to 324 engaged with the tooth block 273 (FIG. 3) fixed to the chain 272. . In order to engage any one of the four claw members 321 to 324 with the teeth of the tooth block 273, the disengaging front positions of the four claw members 321 to 324 are offset so as not to overlap in the A direction. . In this way, any one of the four claw members 321-324 meshes with the tooth block 273 fixed to the chain 272, so that the conveyance jig 30 is driven continuously.

The guide part 330 has the roller 331 which contacts the ceiling surface of the guide rail 280 shown in FIG. As a result, the conveyance jig 30 continuously conveyed and driven by the drive unit 270 is conveyed and guided with a small frictional resistance. The guided portion 330 is provided with an additional roller (for example, in contact with both sides of the guide rail 280 for regulating the movement of the conveyance jig 30 in the second direction B shown in FIGS. 3 and 4). 334, 335). The movement regulation of the conveyance jig 30 in 2nd direction B may be implemented in the area | region different from the guide rail 280. FIG. On the other hand, the roller 331 has an appropriate diameter which is hard to be affected by the gap generated in the joint between the feed rails having a finite length. In addition, the roller 331 is formed of the material which can endure environment, such as acid and alkali peculiar to a plating installation, for example, polypropylene.

4. Position relationship of the workpiece holding part of a conveyance jig and another member

The positional relationship of the workpiece holding part 340 of the conveyance jig 30 and another member is shown to FIG. 6 (A) which is the top view which looked at the area shown in FIG. 3 and FIG. As shown in FIG. 3 and FIG. 6, the distance between the guide part 280 and the work holding part 340 (center distance, the same below) L1 is the distance between the driving part 270 and the work holding part 340 ( It is shorter than L2, and shorter than the distance L3 between the power feeding portion 260 (feeding rail 260A in the example of FIG. 3) and the work holding portion 340. Similarly, the distance L1 of the guided part 330 (331) and the workpiece holding part 340 is shorter than the distance L2 of the driven part 320 and the workpiece holding part 340, and the feed part 310 ) And the work holding part 340 are shorter than the distance L3.

According to such a positional relationship with L1 <L2 and L1 <L3, the conveyance jig 30 holding the workpiece | work 20 can be conveyed stably. As is apparent from FIG. 4, the weight of the workpiece holding part 340 is maximum at the conveyance jig 30. This is because the distance between the work holding part 340 and the guide part 280 which is the lightest part is shortened, and the useless moment acting on the work holding part 340 is reduced. Therefore, the conveyance jig 30 can be conveyed more stably, and the driving force applied to the conveyance jig 30 from the drive part 270 can be reduced. In addition, since the width dimension of the conveyance jig 30 becomes short compared with guiding guide parts of both ends of the conveyance jig 30 as in Patent Document 3, the width dimension of the plating apparatus 10 is also shortened. Miniaturization can be achieved.

In FIG. 7 which is a modified example of FIG. 3 and FIG. 6 which has a cantilever structure, like the structure of patent document 3, the pair of guide parts 280 of a total of two pairs by the pair in both sides of the 2nd direction B of the workpiece | work holding part 340 And a guide portion 330. Even in this case, a positional relationship of L1 <L2 and L1 <L3 is established. In this way, the work holding | maintenance part 340 becomes a double arm beam structure supported by the guide part 280 and the guided part 330 of the both sides. With the two-palm beam structure, the useless moment acting on the work holding part 340 is greatly reduced.

In FIG. 8 which is another modification, the power supply part 260 and the drive part 270 are provided in the one side of the workpiece | work holding part 340 in the 2nd direction B, and the other side of the workpiece holding part 340 is provided. The guide part 280 is provided in the one side. In FIG. 8, one side of the work holding part 340 is supported by the power feeding part 260 and the driving part 270 in the second direction B, and the other side is supported by the guide part 280. It becomes a two-armed structure. Even in such a double-palm beam structure, the useless moment acting on the work holding part 340 is greatly reduced.

6-8, in order to shorten the distance L1 of the workpiece | work holding part 340, the guide part 280, or the guide part 330, the guide part 280 and the guide part 330 are FIG. You may be arrange | positioned above 200 A of upper openings of the plating tank 200 shown in FIG. However, the power supply part 260 and the drive part 270 are arrange | positioned outside the upper opening 200A of the plating tank 200 shown in FIG. In particular, it is necessary to prevent the dust generated by the engagement of the driving unit 270 and the driven unit 320 from falling into the plating liquid Q through the upper opening 200A of the plating bath 200.

Since the contact between the guide portion 280 and the guide portion 330 is the contact between the rollers 331, dust due to sliding does not occur. However, in this embodiment, when the guide part 280 and the guide part 330 are arrange | positioned above 200A of upper openings of the plating tank 200 shown in FIG. 2, the preprocessing tank shown to the right side of FIG. Covers 202 and 203 provided at the upper portion of 230A and reducing the area of the upper opening can be provided at the upper portion of the plating bath 200 (in FIG. 2, the cover of the upper portion of the plating bath 200 ( 202 and 203 are omitted). In this way, while making it possible to reduce the distance L1 of the workpiece | work holding part 340 and the guide part 280, the dust or the like which generate | occur | produced by the contact of the guide part 280 and the roller 331, the cover 202 203 is prevented from falling into the plating liquid Q.

6-8, the relationship between the distance L2 and the distance L3 becomes L2 <L3. This is because the shorter the distance L2 from the driving unit 270 or the driven unit 320 to the work holding unit 340 is, the higher the driving efficiency becomes. However, L2> L3 or L2 = L3 may be sufficient. For example, when the drive part 270 is provided below the horizontal arm part 300, and the feed part 260 is provided above the horizontal arm part 300, a plurality of feed rails 260A- 260D), any relationship among L2 <L3, L2 = L3 or L2> L3 may be established.

5. Brake Mechanism of Roller 331

As described with reference to FIG. 1, the plating apparatus 10 is a driving unit (continuous driving unit) for applying a continuous conveying force to the conveying jig 30 holding the workpiece 20 disposed in the plating vessel 200, and continuously conveying driving ( 270 and an intermittent drive unit (pusher, etc.) for intermittently conveying driving the conveying jig 30 by applying an intermittent conveying force for pushing forward the conveying jig 30 holding the workpiece 20 disposed outside the plating vessel 200 to the front. Has) In this case, it is preferable that the conveyance jig 30 has a brake mechanism which brakes the roller 331 which contacts the ceiling surface of the guide part 280. FIG.

9 illustrates a brake mechanism 350 that is incorporated in, for example, the roller 331. As shown in FIG. 9, the roller 331 is rotatably supported by the rolling bearing 333 on the shaft 332 fixed to the vertical arm 301 of the conveying jig 30. The rolling bearing 333 has an inner ring 333A fixed to the shaft 332, an outer ring 333B fixed to the roller 331, and a rolling element 333C held between the inner ring 333A and the outer ring 333B. It includes. The brake mechanism 350 has an elastic member, for example, a torsion coil spring 351. The torsion coil spring 351 is disposed around the shaft 332 between the collar 334 disposed on the rolling bearing 333 side and the collar 335 disposed on the vertical arm 301 side. Thus, the outer ring 333B is elastically pressed through the collar 334. In this way, the brake mechanism 350 can always brake the roller 331 by elastically pressing the outer ring 333B of the rolling bearing 333. FIG. In addition, the brake mechanism 350 may be provided in the other rollers 334 and 335, and may be provided in any one of the rollers 331, 334 and 335.

The brake mechanism 350 which gives a regular braking force can brake the roller 331 by the braking force which reduces the inertia force acting on the roller 331 after a continuous conveyance drive or the intermittent conveyance drive is complete | finished. In this case, the conveyance jig is driven by the braking force of the brake mechanism 350 at the time of stopping of the conveyance jig 30 after the intermittent conveyance drive and after the continuous conveyance drive while enabling the continuous conveyance drive or the intermittent conveyance drive of the conveyance jig 30. The 30 can be stopped at a predetermined stop position.

In this way, the conveyance jig 30 continues to move forward with an inertia force even after the intermittent conveyance drive ends, and is prevented from stopping in a position other than a predetermined stop position. On the other hand, even when the continuous conveyance drive by the drive part 270 is realized by the engagement of the drive part (gear block) 273 and the driven part (claw member) 321-324, The conveying jig is stopped after the conveying jig is pushed forward, for example with a pusher, to release the engagement. Or even when it carries out continuous conveyance drive by the two drive of the pusher alternately without engaging like patent document 4, a conveyance jig is stopped after pushing forward with a pusher. Therefore, even after the end of continuous conveyance drive, an inertial force acts on the conveyance jig 30 similarly to the completion of the intermittent conveyance drive completion. Therefore, the conveyance jig 30 is stopped by the braking force of the brake mechanism 350 at least at the time of stopping the conveyance jig 30 after intermittent conveyance drive and after continuous conveyance drive. This prevents the conveyance jig 30 from being stopped at a position other than the predetermined stop position by continuously advancing with an inertial force.

On the other hand, although the present embodiment has been described in detail as described above, it will be readily understood by those skilled in the art that many modifications are possible without departing substantially from the novelty and effects of the present invention. Therefore, all such modifications shall fall within the scope of the present invention. For example, a terminology described in the specification or drawings together with another term that is at least once broader or has the same meaning may be substituted for that term in any part of the specification or drawing. Moreover, all the combinations of this embodiment and a modification are also included in the scope of the present invention.

For example, although the brake mechanism 350 has always provided the braking force to the roller 331 etc., it is not limited to this. For example, the brake mechanism may be used to apply a braking force to the roller 331 or the like only when the conveyance jig 30 stops after the intermittent conveyance drive and after the continuous conveyance drive. To do this, it is sufficient to detect that the conveyance jig 30 has reached just before the stop position, and operate the brake mechanism mechanically or electrically. Alternatively, a brake mechanism may be provided at the stop position of the transfer jig 30, and a braking force may be applied to the roller 331 or the like of the transfer jig 30 that has reached the stop position.

10: surface treatment device (continuous gold treatment device) 20: work
30: conveyance jig 200: surface treatment tank (plating tank)
200A: top openings 202, 203: cover
260: power supply unit 260A to 260B: power supply rail
270: drive unit (continuous drive unit) 271: sprocket
272: chain 273: toothed block
280: guide portion (guide rail) 300: horizontal arm portion
301: vertical arm 310: feed part
320: driven parts 321 to 324: claw member
330: guide portion 331: roller
333: rolling bearing 333C: paddle
350: brake mechanism 351: torsion coil spring
A: first direction (conveying direction) B: second direction
Q: Processing amount (plating amount)

Claims (9)

A treatment bath containing the treatment liquid, the surface treatment bath having an upper opening,
A conveying jig for conveying the workpiece along a conveying direction, comprising a workpiece holding part for holding the workpiece so as to hang down in the processing liquid through the upper opening of the surface treatment tank;
A feeder that contacts the conveying jig and feeds the work;
A driving unit which applies a driving force to the conveying jig and conveys the conveying jig;
It has a guide part which contacts with said conveyance jig and conveys the conveyance jig,
When viewed in plan view, the distance between the guide portion and the workpiece holding portion is shorter than the distance between the driving portion and the workpiece holding portion, and is shorter than the distance between the feeding portion and the workpiece holding portion. The method of claim 1,
The conveying jig,
It comprises a horizontal arm (hang) for supporting the work holding hanging down,
The work holding part includes a chuck for chucking at least an upper end of the work,
The horizontal arm portion,
A guide part guided to the guide part;
A driven part driven by the driving part;
And a feed portion in contact with the feed portion. The method of claim 2,
The guide portion is disposed above the upper opening of the surface treatment bath,
And the drive portion and the power feeding portion are disposed at positions away from an upper portion of the upper opening of the surface treatment tank. The method of claim 3,
And the surface treatment tank has a cover for reducing the area of the upper opening. In the conveyance jig which hold | maintains the workpiece | work supplied to a surface treatment apparatus, and conveys the said workpiece | work along a conveyance direction,
A horizontal arm portion and a workpiece holding portion suspended from the horizontal arm portion,
The work holding part includes a chuck to chuck at least an upper end of the work,
The horizontal arm portion,
A guide part guided to a guide part provided in the surface treatment apparatus;
A driven part driven by a driving part provided in the surface treatment apparatus;
It includes a feed portion in contact with the feed portion provided in the surface treatment apparatus,
A conveyance jig, wherein the distance between the guide portion and the workpiece holding portion is shorter than the distance between the driven portion and the workpiece holding portion, and is shorter than the distance between the feed portion and the workpiece holding portion in plan view. A surface treatment tank containing a treatment liquid and having an upper opening,
A conveying jig for conveying the workpiece processed by the surface treatment tank;
A continuous driving unit for applying a continuous conveying force to the conveying jig holding the workpiece disposed in the surface treatment tank and continuously conveying the conveying jig;
An intermittent drive unit for applying an intermittent conveying force to the conveying jig holding the workpiece disposed outside the surface treatment tank and intermittently conveying the conveying jig;
It has a guide part which conveys and guides the said conveying jig,
The conveying jig includes a guide portion guided to the guide portion,
The guide portion,
A roller in contact with the ceiling surface of the guide;
And a brake mechanism for braking the rollers at least when the conveying jig is stopped after the intermittent conveying drive and after the continuous conveying drive. The method of claim 6,
The brake mechanism is a surface treatment apparatus characterized by braking the roller at all times by a braking force that reduces the inertial force acting on the roller by the intermittent conveyance drive or the continuous conveyance drive. The method of claim 7, wherein
The roller is rotatably supported through a rolling bearing on an axis fixed to the conveying jig,
The rolling bearing includes an inner ring fixed to the shaft, an outer ring fixed to the roller, and a rolling body held between the inner ring and the outer ring,
And the brake mechanism elastically presses the outer ring. In the conveyance jig which hold | maintains the workpiece | work supplied to a surface treatment apparatus, and conveys the said workpiece along a conveyance direction,
A horizontal arm portion and a workpiece holding portion suspended from the horizontal arm portion,
The horizontal arm portion,
A guide part guided to a guide part provided in the surface treatment apparatus;
A driven part driven by a driving part provided in the surface treatment apparatus;
It includes a feed portion in contact with the feed portion provided in the surface treatment apparatus,
The guide portion,
A roller in contact with the ceiling surface of the guide;
And a brake mechanism for braking the roller.

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