JP2006327723A - Electro-plating treatment system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide technology making a gap between products transported into a plating treatment tank from a previous treatment process not easily shift. <P>SOLUTION: A conveyer 48 including roller chains 50c, 50d transporting a tool along a track 1 is arranged on the track 1. The tool includes a rotary structure part R rotatably supporting a sprocket 55 meshing with the roller chains 50c, 50d. The rotary structure part R includes at least two sprocket shaft parts 56 having a pair of the sprockets 55 concentrically arranged. The sprocket shaft parts 56 are provided under uneven condition along a longitudinal direction of the track 10. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electroplating processing system, and more particularly to a device provided with a jig used for moving a printed circuit board or the like in a processing solution in a plating processing tank.

  As a plating system for sheet-like strip products such as printed circuit boards (hereinafter referred to as products), the surface of the processing liquid in the plating tank is moved while feeding the product while the product is suspended, and the surface is plated. Such an electroplating processing system is well known (see Patent Document 1).

  As described in Patent Document 1, the electroplating processing system is a preprocessing step that is a processing step before performing plating, a plating processing step that performs plating, and a processing step after performing plating. The post-process includes a post-process and a return process for returning the process to the pre-process after passing through the post-process.

  By the way, the products are transported in a state where they are suspended by a jig that detachably supports them. In order to transport the jig in the plating process or the returning process, for example, in the apparatus described in Patent Document 1, It was as follows.

  That is, as shown in FIGS. 10 and 11, a plurality of rotatable engaging claws 25 can be freely rotated clockwise or counterclockwise around the rotation shaft 27 on the jig 2. Install in a pendulum shape. Then, the engaging claw 25 is engaged with the engaging tooth 32 of the toothed belt 30 having the engaging teeth 32 engaging with the engaging claw 25, and the toothed belt 30 is rotated in this state, thereby plating the product W. It was conveyed in the process B or the return process D.

  In the stage before and after the plating process and the returning process (pre-processing step A and post-processing step C), the pusher 6 is engaged with the engaging piece 7 formed to protrude from the upper end of the jig 2. In this way, the jig 2 that hangs the product W is transferred, and the product W is also transferred from the previous or next stage to the previous or next stage with respect to the plating process B or the return process D. . The transfer is performed intermittently, and a predetermined gap is provided between the products W during product conveyance.

  On the other hand, making the gap as small as possible is important for increasing the yield and reducing the product unit price. However, if the gap is too small, when the product W is electroplated, it may adversely affect the adjacent product W in the plating tank, and in this case, a suitable plating process cannot be performed. Therefore, it is important to appropriately maintain a gap between products in performing the plating process.

  However, in the apparatus described in Patent Document 1, the engagement teeth 32 of the toothed belt 30 and the engagement claws 25 of the jig 2 do not engage well, and the engagement claws 25 are uneven as shown in FIG. There is a case where it runs on the convex portion of the engaging tooth 32 without meshing with the engaging tooth 32 formed by being continuous (see the engaging claw 25 on the right side of FIG. 11). The reason why such a phenomenon occurs is because the engaging claw 25 can rotate in a pendulum shape as described above.

If the engagement claw 25 rides on the convex portion of the engagement tooth 32 in this way, the product W suspended by the jig 2 applies an unexpected external force from the belt 30 via the engagement claw 25. To receive. As a result, the product transport direction may be different from the specified direction. For this reason, in the plating tank, the product W that has a different orientation during product conveyance may have a suitable plating process if the gap between the adjacent products W is different from a predetermined size. It may not be possible.
JP 2000-54197 A

  The objective of this invention is providing the technique which makes it difficult to shift | deviate the clearance gap between the products conveyed to the tank for plating processes for performing a plating process after passing through a pre-processing process.

  In order to achieve the above object, an electroplating processing system according to the present invention includes a plating processing tank in which a processing solution for plating processing is stored, and a sheet-like strip product on which plating processing is performed in the tank. A jig for dropping, and a track for moving the jig for dropping the sheet-like strip product in the tank, while feeding the sheet-like strip product to the processing liquid in the tank In the electroplating processing system for electroplating the sheet-like strip product by being moved at a position, a conveyor including a roller chain for transporting the jig along the track is disposed on the track, and the jig Has a rotating structure that rotatably supports a sprocket that meshes with the roller chain, and this rotating structure is formed by a plurality of sprockets arranged coaxially. Wherein at least two of Tsu bets shaft, the sprocket shaft is characterized in that it is arranged in mutually staggered state along the longitudinal direction of the track.

  According to the present invention, the sprocket of the sprocket shaft portion formed by coaxially arranging a plurality of sprockets rotates about an axis (hereinafter referred to as a rotating shaft), but the sprocket as a whole is relative to the rotating shaft. It will not be displaced. Accordingly, it is difficult for the sprockets of the sprocket shaft portion and the roller chain to be misaligned.

  In addition, since the sprocket part is composed of a plurality of sprockets attached to the rotating shaft, the sprocket is more reliably engaged with the roller chain than when the sprocket is attached to the rotating shaft alone. Will increase.

  Since the sprocket shaft portions are arranged in a stepped manner along the longitudinal direction of the track, if the sprocket shaft portions arranged in a stepped manner are provided so that the outer edges of the sprockets overlap each other The sprockets of the sprocket shafts interfere with each other without contacting the sprockets of the adjacent sprocket shafts. For this reason, even if there are a plurality of sprocket shafts in the rotating structure, the rotating structure can be shortened in the longitudinal dimension.

  Further, as described above, by providing the outer edges of the sprockets so as to overlap, the number of sprockets that mesh simultaneously with the rollers of the roller chain is increased. This further increases the certainty that the sprocket meets the roller chain.

  According to the electroplating processing system of the present invention, the certainty that the sprocket meshes with the roller chain is increased, and the meshing between the sprocket and the roller chain hardly occurs. For this reason, since the product W does not receive an unexpected external force via the sprocket, the product W can be maintained in a specified direction during conveyance. Therefore, it is possible to effectively prevent the interval between the products conveyed into the plating tank from deviating from the prescribed dimension, and thus a suitable plating process can be performed. As a result, the yield is good.

Embodiments of the present invention will be described with reference to the drawings.
Since the electroplating processing system S according to the present invention is different from the prior art described above only in the jig conveying means on the track, the same portions are denoted by the same reference numerals and detailed description thereof is omitted.

  FIG. 1 is a plan view of an electroplating processing system S capable of performing four steps of a pretreatment step, a plating treatment step, a post treatment step, and a return step, and FIG. 2 is a view seen from the direction of arrow II in FIG. In the electroplating processing system S, the pre-processing step A, the plating processing step B, and the post-processing step C are sequentially performed sequentially on one track. FIG. 3 is a view taken along the line III-III in FIG. 1 and shows that the jig returning process D is performed on the other track.

  In the case of step A-B-C (see FIGS. 1 and 2), the conveyance direction of the product is the same on one track 1, but in the case of step D, the other direction is the opposite of step A-B-C. The product is transported on the track 10 (see FIG. 3), and the processing in all the processes ABCD is circulated (the transport direction is indicated by a bar arrow in FIGS. 1 to 3). ).

  A product before plating is referred to as a product before plating, and a product after plating is referred to as a product after plating. For convenience, the transport path on the track 1 where the processes in the pretreatment process A, the plating process B, and the post-processing process C are performed is referred to as the forward path, and the process in which the process in the jig returning process D is performed. The conveyance path on 10 is called a return path.

  The track 1 which is the forward path is continuously located on both sides of the plating track 11 where the processing in the plating process B is executed, and the front track 12 where the processing in the preprocessing step A is executed. And a rear trajectory 13 in which the processing in the post-processing step C is executed.

  The process in the process A on the forward path is performed in the plating tank 14, the process in the process B is performed in the pretreatment tank 15, and the process in the process C is performed in the posttreatment tank 16. On the return path, only the process in the jig return process D is performed on the track 10.

  The track 10 and the track 1 are provided in parallel at a predetermined interval. Then, at both ends of the tracks 1 and 10, the tracks 1 and 10 move so as to move from the case where the product W is transported on the forward path to the case where the product W is transported on the forward path or from the case where the product W is transported on the forward path. A trajectory transfer device 40 is provided for translating the product W between the trajectories 10 and transferring the transport path of the product W from the previous trajectory 1 (10) to the other trajectory 10 (1). Since each processing step is a well-known content, detailed description is omitted.

The tracks 1, 10 have a plate-like rail track portion 47 and a conveyor 48 as shown in FIG. 5 that carries the jig 2 </ b> A horizontally along the rail track portion 47.
As shown in FIG. 5, the conveyor 48 includes a roller chain 50, a pair of drive gears 50 a that are provided at both ends (only one is shown in FIG. 5) and drives the roller chain 50, and prevents the roller chain 50 from loosening. A plurality of slack preventing gears 50b. The drive gear 50a is driven by a drive motor (not shown).

  The roller chain 50 is configured by connecting a large number of rollers 50d interposed between a pair of opposed roller link plates 50c. The roller chain itself is a well-known one.

As shown in FIG. 4, the jig 2 </ b> A includes a substrate 51, a plurality of rotation shafts 53 planted on the substrate 51, and a sprocket that is fitted to these rotation shafts 53 and freely rotates around the rotation shaft 53. 55 and a hanging plate 57 that extends downward from the substrate 51 and hangs down the product W.

  The substrate 51 can slide on the plate-like rail track 47 (see FIG. 5). For this purpose, the lower edge of the rectangular parallelepiped shape is cut out to form a gate with a cross-sectional shape (see FIGS. 4 and 6).

  A plurality of rotating shafts 53 are provided in a state where they are planted on the side surface of the substrate 51, and a plurality of (a pair in the present embodiment) sprockets 55 are attached to one rotating shaft 53 with a gap therebetween. . A plurality of sprockets 55 attached to one rotating shaft 53 is referred to as a sprocket shaft portion and is indicated by reference numeral 56.

  The substrate 51 is provided with a plurality of sprocket shaft portions 56 (four in this embodiment), and the plurality of sprocket shaft portions 56 are adjacent to each other in the jig 2A in a stepped state in the longitudinal direction of the tracks 1 and 10 and adjacent to each other. The outer edges of the sprockets 55 of the shaft portion 56 are arranged so as to partially overlap.

  The substrate 51 having such a configuration can be said to be a sprocket mounting plate. A substrate 51, which is a sprocket mounting plate, including at least two sprocket shaft portions 56 is referred to as a rotating structure portion, and is indicated by reference numeral R.

The hanging plate 57 is formed by attaching a gripping portion 57b for gripping the product W to an arm 57a extending downward from the back surface of the substrate 51.
In addition, what is provided in the upper edge of the board | substrate 51 is the receiving part 7 with which the feeding body 6 which advances by pressing the jig | tool 2A contact | abuts.

  According to such an electroplating processing system S, the sprocket 55 that rotates about the rotation shaft 53 does not displace relative to the rotation shaft 53 as a whole. In other words, it is not attached to the substrate 51 in a pendulum shape. Therefore, the sprocket 55 and the roller chain 50 are unlikely to be misaligned. For this reason, the product W does not receive an unexpected external force via the sprocket 55. Accordingly, the gap between the product W and the adjacent product W is not shifted.

  Further, since the sprocket shaft portion 56 is formed by attaching a plurality of sprockets 55 to the rotary shaft 53, the sprocket 55 is a roller as compared with the case where the sprocket 55 is attached to the rotary shaft 53 alone. The certainty of meshing with the chain 50 (specifically, the roller 50d) is increased.

  The sprocket shaft portions 56 are arranged in a stepped state in the longitudinal direction of the rail track portion 47, and the outer edges of the sprocket shafts 56 of the sprocket shaft portion 56 are provided so as to overlap with the sprocket 55 of the adjacent sprocket shaft portion 56. Therefore, the sprocket 55 interferes without contacting the adjacent sprocket 55 (see FIGS. 5 to 8). For this reason, even if there are a plurality of sprocket shaft portions 56, the longitudinal dimensions of the sprocket structure can be shortened.

It is a top view of the conventional electroplating processing system S. It is the figure seen along the II-II line | wire of FIG. 1, Comprising: A pre-processing process, a plating process process, and a post-processing process are sequentially performed on one track | orbit sequentially among electroplating processing systems. FIG. It is the figure seen along the III-III line | wire of FIG. 1, Comprising: It is a figure which shows that the process of a jig | tool return process is performed on the other track | orbit. It is a perspective view which shows the jig | tool of the electroplating processing system which concerns on this invention, Comprising: It is a figure which shows the state before a jig | tool is conveyed by a roller chain. It is a perspective view of the conveyor which conveys the jig | tool of the electroplating processing system which concerns on this invention. It is a perspective view which shows the state in which the jig | tool of the electroplating processing system which concerns on this invention is conveyed by the conveyor. It is a front view of a jig. It is the figure seen from the arrow VIII direction of FIG. It is the figure seen from the arrow IX direction of FIG. It is a figure for demonstrating the conventional problem. It is a principal part enlarged view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Track 2 Jig 2A Jig 6 Pushing body 7 Receiving part 10 Track 11 Plating track 12 Front track 13 Rear track 14 Plating tank 15 Pretreatment tank 16 Posttreatment tank 25 Engaging claw 27 Rotating shaft 30 Belt 32 Engagement teeth 40 Track change device 47 Rail track portion 48 Conveyor 50 Roller chain 50a Drive gear 50b Loosening prevention gear 50c Roller link plate 50d Roller 51 Substrate 53 Rotating shaft 55 Sprocket 56 Sprocket shaft portion 57 Hanging plate 57a Arm 57b Holding portion W Product A Pre-treatment process B Plating treatment process C Post-treatment process D Jig return process S Electroplating treatment system

Claims (2)

A plating tank in which a processing solution for plating processing is stored, a jig for dropping a sheet-shaped strip product to be plated in the tank, and a jig for hanging the sheet-shaped strip product An electroplating for electroplating the sheet-like strip product by moving the sheet-like strip product in a processing solution in the tank while supplying power to the track. In the processing system,
In the track, a conveyor including a roller chain that transports the jig along the track is disposed,
The jig has a rotating structure that rotatably supports a sprocket that meshes with the roller chain,
This rotating structure includes at least two sprocket shafts formed by coaxially arranging a plurality of sprockets,
The sprocket shaft is disposed in a stepped manner along the longitudinal direction of the track.   2. The electroplating system according to claim 1, wherein the sprocket shaft portions arranged in a different state are provided such that outer edges of the sprockets overlap each other.

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