JPH0478530B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a work processing device suitable for a plating processing device.

(Prior art) Generally, a plating processing apparatus includes a group of processing tanks consisting of a pre-processing tank, a plating tank, and a post-processing tank, and a workpiece for sequentially dipping the workpiece (object to be processed) into these processing tanks. A transport device is provided.

(Problems to be Solved by the Invention) However, in the conventional plating apparatus, only one plating tank is provided for one type of plating process, so if the plating solution becomes dirty, We had no choice but to stop transporting the workpiece and replace the plating solution. Therefore, there is a problem that processing efficiency is low.

Of course, in order to solve such problems, it is possible to install two plating tanks for one type of processing process and use both plating tanks selectively, but with conventional workpiece transportation equipment, this is not possible. Since it is only possible to feed the workpieces one after another at a fixed pitch, it is impossible to feed the workpieces to the two plating tanks alternatively.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a treatment method in which a pre-treatment tank, at least two first treatment tanks, a second treatment tank, and a post-treatment tank are sequentially arranged in tandem. A group of tanks, a plurality of hangers for suspending workpiece holding jigs, and a plurality of hangers provided corresponding to each of the above hangers to guide and support the hangers so that they can move up and down between raised and lowered positions, as well as the group of processing tanks. a plurality of hanger guides arranged at intervals so as to be movable on a track extending along the above-mentioned treatment tank group; a hanger attached to each hanger guide at the front and rear end positions of each treatment tank of the treatment tank group is raised and lowered; to set the hanger in the lowered or raised position, and in the lowered position, the workpiece attached to the hanger is immersed in the processing tank below the hanger guide and set to the processing state, while in the raised position, the workpiece is placed in the processing state. a hanger elevating mechanism located above the exterior of the tank and set in a non-processing state; a hanger guide arranged along the group of processing tanks and with the hanger set in the lowered position; a progressive mechanism that intermittently transfers the pieces at a predetermined pitch toward the processing tank; and a progressive mechanism that is arranged on the sides of the first and second processing tanks, and selectively sets the raised position of the two processing tanks by the hanger lifting mechanism. The hanger guide that has arrived at the front end position of the processing tank where the operation is to be performed is transferred at once from the front end to the rear end of the processing tank below the hanger guide within one pitch transfer period of the hanger guide by the sequential feeding mechanism. It is characterized by being constructed by a hanger guide transfer mechanism.

(Function) According to the above device, the elevating mechanism and the sequential feed mechanism operate while the hanger holds the jig on which the workpiece is attached, and as a result, the workpiece advances downstream by a predetermined pitch while moving the workpiece into the pretreatment tank, It is soaked in a first treatment tank, a second treatment tank, or a post-treatment tank.

When using the first processing tank among the first and second processing tanks, the transfer mechanism is switched to the first transfer state. In this state, the workpiece is transferred from the pretreatment tank to the first processing tank by the sequential feeding mechanism and the lifting mechanism, and is sent to the downstream side one pitch at a time in the first processing tank. When the workpiece is lifted from the first processing tank, the workpiece is sent to the post-processing tank by the transfer mechanism while the other workpieces are sent by one pitch by the progressive feeding mechanism, and thereafter sent through the post-processing tank by the sequential feeding mechanism.

Further, when using the second processing tank, the transfer mechanism is switched to the second transfer state. In this state, when the workpiece is lifted from the pretreatment tank, the transfer mechanism transports the workpiece from the pretreatment tank to the second processing tank while the other hanger is sent one pitch by the progressive mechanism, and then and is sent through the second processing tank and the post-processing tank by the lifting mechanism.

(Example) In FIG. 1, which is a schematic plan view, a treatment tank group T includes a large number of treatment tanks arranged in a row, namely, pretreatment tanks m, M, a first plating tank A, a second plating tank B, It is composed of post-processing tanks N and n, and these processing tanks are arranged, for example, in a U-shape. A transport device 1 is provided between both parallel parts of the processing tank group T. Arrow F indicates the workpiece conveyance direction, and a loading section 2 (workpiece mounting section) is provided at the upstream end of the conveyance device 1, and an unloading section 3 (workpiece unloading section) is provided at the downstream end. The first plating tank A is located downstream of the treatment tank group T and follows the pretreatment tank M. The second plating tank B follows the first plating tank A, and the second processing tank B is followed by a post-processing tank N. The same plating solution is stored in the first plating tank A and the second plating tank B, and as described later, the first plating tank A and the second plating tank B can be used alternatively. It is now possible to perform the processing.

As shown in FIG. 2, which is an enlarged partial cross-sectional view of FIG. It's summery. Conveying device 1
Hangers 6 are provided on both the left and right sides of the tank, and a hanger arm 5 projects from each hanger 6 to the upper part of the processing tank group T.

The hanger 6 is supported via rollers 8 on a vertical hanger guide 7 so as to be able to rise and fall. Second
The left part of the figure shows a state in which the hanger 6 is lowered, that is, a state in which the workpiece W is immersed in the pretreatment tank m, and the right part of FIG. The state in which it has been pulled up from the first plating tank A is shown.

An elevating mechanism 10 is provided between the left and right hangers 6 to support the hanger 6 in a raised position so as to be movable toward the rearmost post-processing tank of the processing tank group. The elevating mechanism 10 includes vertical guides 11 spaced from side to side, and an elevating beam 12 is guided and supported by the guides 11 via rollers 13 so as to be movable up and down. Lifting beam 1 is attached to hanger 6
A roller 15 protruding toward the 2 side is provided, and the lifting beam 12 is provided with a rail 1 extending below the roller 15 in the longitudinal direction of the conveying device 1 (conveying direction F in FIG. 1).
4 is provided. Although not shown, the elevating mechanism 10 has a drive mechanism composed of, for example, an electric motor and a chain in order to raise and lower the elevating beam 12. When the elevating beam 12 is raised, the rollers 15 move on the rails 14. It is said that it is possible to drive.

The upper and lower ends of the guide 11 are fixed to an upper frame 16 and a lower frame 17 of the conveying device 1, respectively. Rails 20, 2 extending in the longitudinal direction of the transport device 1 are provided on both sides of the frames 16, 17.
1 is installed. The hanger guide 7 has both upper and lower ends connected to the rail 20 through rollers 22 and 23.
21, and the hanger guide 7 is transported along the rails 20, 21 by a progressive feeding mechanism 25.

The progressive mechanism 25 moves the vicinity of the rail 21 to the rail 2.
1 and a rack 26 extending parallel to the rack 26.
A claw 27 is connected to. Claw 27 is easy 26
The hook 27 protrudes toward the rail 21 side, and the tip of the claw 27 engages with a receiver 28 at the lower end of the hanger guide 7. As will be described later, a drive mechanism is attached to the rack 26 for reciprocating the rack 26 with a predetermined stroke in the longitudinal direction. By reciprocating the rack 26 in this manner, the hanger guide 7 is moved forward by a predetermined pitch via the claw 27 and the receiver 28.

A claw 31 of a positioning mechanism 30 is adapted to engage with the upper end of the receiver 28 . As will be described in detail later, the positioning mechanism 30 allows the hanger guide 7 with the hanger 6 set in the raised position to be transported in one go or special transport by the hanger guide transport mechanism (hereinafter simply referred to as transport mechanism) 35. The positioning mechanism 30 is a mechanism for stopping the hanger guide 7 at a predetermined position when the hanger guide 7 is moved.
This is now being prevented.

Further, the conveyance device 1 includes a transfer mechanism 35 on the side of the first plating tank A and the second plating tank B.
As shown in FIG. 3, which is an enlarged partial diagram of FIG. Endless chain 3 extending to the front end position of tank N
6, and a plurality of hook mechanisms are attached to the endless chain 36 at appropriate intervals. The hook mechanism is comprised of a pin 37 attached to a bracket fixed to an endless chain 36 and a hook 38 which is easily rotatable in one direction via the pin 37.

When the transfer mechanism 35 is driven, that is, the pair of chain wheels 4 are
When the endless chain 36 is driven through 0, each hook mechanism advances in the direction shown by arrow F in FIG. When the hook 38 of the hook mechanism collides with the receiver 39 at the lower end of the hanger guide 7 from behind,
The hook 38 tries to rotate in the opposite direction to the arrow g shown in FIG. Therefore, the receiver 39 of the hanger guide 7 is pushed by the hook 38 and moved forward in the F direction.

On the other hand, when the transfer mechanism 35 is not driven, that is, when the endless chain 36 is stationary, the hanger guide 7 is transferred one pitch in the F direction by the sequential feed mechanism 25, which will be described in detail later, so that the receiver 39 at the lower end of the hanger guide 7 is moved. When the hook 38 collides with the hook 38 from behind, the hook 38 rotates in the direction of the arrow g via the pin 37 and passes through the hanger guide 7 without engaging with the receiver 39 of the hanger guide 7. After the hanger guide 7 has passed, the hook 38
is rotated in the opposite direction through the pin 37 due to its own weight and returns to its original state. The specific positions of the receiver 39 and the chain wheel 40 are clearly shown in FIG.

As shown in FIG. 4, which is a detailed cross-sectional view of FIG. 2, the progressive mechanism 25 includes a pinion gear 45 for driving the rack 26, a gear mechanism 46 for driving the gear 45, and a crank mechanism
7, a reduction gear 48 and a motor (not shown). The reducer 48 and the motor are installed within the frame 17, and the vertical output shaft 49 of the reducer 48
A base end portion of a crank arm 50 is fixed to the upper end of the crank arm 50 . A pin 51 is located at the tip of the crank arm 50.
is attached, and the pin 51 is inserted into the groove 5 of the arm 52.
3 is fitted. The arm 52 is fixed to a shaft 54, and this shaft 54 is connected to a gear 45 via a gear mechanism 46.

As shown in FIG. 5, which is a partial view of FIG. oscillates the angle, thereby causing the gear 45 to rotate through the gear mechanism 46.
is rotated by a predetermined angle to advance the rack 26 by a predetermined stroke.

As shown in FIG. 4, a small diameter chain wheel 56 is attached to the output shaft 49 of the reducer 48. The chain wheel 56 is connected to a large diameter chain wheel 58 via a chain 57. The chain wheel 58 is fixed to a vertical shaft 59,
The upper end of the shaft 59 connects to the shaft 61 via a bevel gear mechanism 60.
is connected to. The shaft 61 extends along the conveying direction F.

As shown in FIG. 6, which is an enlarged cross-sectional view of FIG. 4, a cam 62 is attached to the shaft 61, and rollers 65 (only the left side is shown in FIG. 6) are in contact with the cam 62 from both sides. The roller 65 is a component that constitutes a part of the progressive feeding mechanism 25, and is attached to the lower end of a lever 66 that extends diagonally. The lever 66 has an intermediate portion rotatably supported by a shaft 67 parallel to the shaft 61, and is provided with a guide rail 68 at the upper end. The guide rail 68 is located below the roller 69, and the lever 66 is moved by the roller 65 to the shaft 6.
7, the guide rail 68 moves the roller 69 up and down. The support arm 70 of the roller 69 is movably connected to the bracket of the rack 26 via an axis 71 parallel to the axis 61. The pawl 27 is fixed to this arm 70 (or shaft 71), and when the roller 69 is raised as described above, the pawl 27
is raised to a position where it does not engage with the receiver 28, so that even if the rack 26 is driven, the pawl 27 does not advance the hanger guide 7. Also, when roller 69 is lowered, pawl 27 descends and engages receiver 28, so that when rack 26 is driven, pawl 27 advances hanger guide 7.

Furthermore, another cam 63 is attached to the shaft 61,
Rollers 74 (only the right side is shown in FIG. 6) are in contact with the cam 63 from both sides. The roller 74 is a component part of a lifting control mechanism 75 that cooperates with the lifting mechanism 10 to control the lifting and lowering of the hanger so that the hanger 6 attached to the hanger guide 7 is set in the raised position or the lowered position. It is attached to the lower end of an arm 76 that extends to. The arm 76 has a shaft 6 in the middle.
It is rotatably supported by a shaft 79 parallel to 1. The upper end of the arm 76 is fixed to the lower end of a guide 77 that extends vertically, and a roller 78 is located outside the guide 77 (on the hanger 6 side). A shaft 81 parallel to the shaft 61 is attached to a bearing bracket fixed to the lifting beam 12, and the shaft 81 is parallel to the shaft 61.
The intermediate portion of the lever mechanism 80 is attached to the lever mechanism 80 . The roller 78 is attached to the lower end of the lever mechanism 80, and the guide 82 is attached to the upper end of the lever mechanism 80. The guides 82 are disposed at appropriate positions in the longitudinal direction of the rail 14, that is, at discontinuous portions provided at positions corresponding to the front and rear ends of each processing tank.

The guide 77 swings as the cam 62 rotates. In this case, when the guide 77 moves toward the hanger 6, the roller 78 is pushed and the lever mechanism 80 rotates to the solid line position, and the lever Mechanism 80
The tip of the guide 82 attached to the hanger 6
tilts inward with respect to the rollers 15 of. in this case,
When the lifting beam 12 rises, the lifting beam 12
The guide 82 of the lever mechanism 80 attached to the lever mechanism 80 also rises, but the tip of the guide 82 does not engage with the roller 15 of the hanger 6, and the hanger 6 is left behind and does not rise. On the other hand, when the guide 77 moves inward, the lever mechanism 80 and the guide 82 rotate due to their own weight, and the guide 82 moves to the position directly below the roller 15.
2 moves, therefore, in this state the lifting beam 1
When the guide 82 is raised together with 2, the guide 82 engages with the roller 15, and the hanger 6 is raised.

The positioning mechanism 30 includes a link mechanism 85 connected to the claw 31 and a cylinder 86 that drives the link mechanism 85. When the hanger guide 7 is fed all at once by the transfer mechanism 35, the cylinder 8
When the cylinder 86 is actuated and expanded by receiving air pressure from a pneumatic drive source (not shown), the cylinder 86 connects the claw 31 at the tip of the cylinder 86 to the receiver 28 attached to the lower end of the hanger guide 7 via the link mechanism 85.
The hanger guide 7 is set at a position where it can be engaged with the claw 31, and the hanger guide 7, which has been fed at once to the set position of the claw 31, is stopped. Thereafter, the cylinder 86 is contracted in a known manner, and the link mechanism 85 causes the pawl 31 to return to its original state and disengage from the engagement position with the receiver 28.

As mentioned above, the elevating mechanism 10 has an elliptical endless track of the conveying device 1, that is, the lower and upper frames 1.
7 and 16, and each treatment tank m, on the endless track.
An elevation control mechanism 75 is provided at a position corresponding to the front end or entrance position and the rear end or exit position of M, A, B, N, and n. Progressive feed mechanism 25
The hanger guides 7 are intermittently transferred one pitch at a time on the elliptical orbit. When the hanger guide 7 transferred in this way reaches the front end position of the first plating tank A, the first plating tank A is not used and the second plating tank B is used. The hanger 6 attached to the hanger guide 7 is set to the raised position by the lifting mechanism 10 and the lifting control mechanism 75 installed at the front end position. At this time, the work W attached to the work holding jig of the hanger 6 is positioned outside and above the first plating tank A. Next, the transfer mechanism 35 transfers the hanger guide 7 set at the raised position all at once to the front end position of the second plating tank B within one pitch transfer period by the sequential transfer mechanism 25. At this time, the hanger guide 7 that is transferred all at once is moved by the positioning mechanism 30.
It is stopped at the front end position of the second plating tank B used. Next, the hanger 6 of the hanger guide 7 is lowered to the lowered position by the lifting mechanism 10, and the work W attached to the work holding jig of the hanger 6 is immersed in the processing liquid in the second plating tank B. It is set to the tematsuki processing state.
Next, the hanger guide 7 is moved to the sequential feed mechanism 2.
During the transfer period, the work W suspended from the hanger 6 is subjected to plating processing. In this case, the workpiece W attached to the hanger 6 is transferred along a path as shown by the solid line b in FIG.

On the other hand, if the first plating tank A is used and the second plating tank B is not used, the hanger guide 7 is attached to the hanger guide 7 that has reached the front end position of the first plating tank A in the same manner as described above. The hanger 6 that has been placed is connected to the lift control mechanism 75 and lift mechanism 10 installed at the position
is set to the lowered position by
5, the work W attached to the hanger 6 is intermittently transferred one pitch at a time, and is subjected to plating treatment in the first plating tank A. Thereafter, when the hanger guide 7 reaches the rear end position of the first plating tank A, that is, the front end position of the second plating tank B, the hanger 6 is set in the raised position.
Next, in the same manner as described above, the hanger guide 7 is transferred all at once to the rear end position of the second plating tank B by the transfer mechanism 35. In this case, the workpiece W attached to the hanger 6 is transferred along the path shown by the solid line a in FIG.

As described above, after the work W is subjected to a predetermined plating process using either the first plating tank A or the second plating tank B, the sequential feeding mechanism 25,
The hanger 6 attached to each hanger guide 7 is raised and lowered by the lifting mechanism 10 and the lifting control mechanism 75, and predetermined post-processing is executed.

As described above, while each hanger guide 7 is intermittently transferred on the elliptical trajectory of the transport device 1, the work W attached to the hanger 6 of each hanger guide 7 is subjected to predetermined processing in each processing tank. After completing a predetermined process in the last post-processing tank m, the pieces are sequentially transported to the unloading section 3.

(Effects of the Invention) As explained above, according to the present invention, two plating tanks A and B (processing tanks) can be used alternatively, so one of the processing tanks (for example, the first plating tank A) Even when exchanging the treatment liquid, the series of treatments can be continued using the other treatment tank (for example, second plating tank B). Therefore, processing efficiency can be improved compared to the conventional structure. Further, the workpiece transfer operation of the transfer mechanism 35 is linked to the sequential workpiece transfer operation of the progressive mechanism 25, so that, for example, above the unused plating tank (A or B), the workpiece W The processing can be performed at a higher speed than when the data is sent one pitch at a time.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view of the entire tamping device adopting the present invention, FIG. 2 is an enlarged cross-sectional view of FIG. 1, and FIG. 3 is an enlarged partial view of FIG.
FIG. 4 is a detailed view of a cross-sectional area shown in FIG. 6...Hanger, 7...Hanger guide, 21,2
2... Hanger guide guide rail, 10... Lifting mechanism (hanger lifting mechanism part), 25... Progressive feeding mechanism (hanger guide sequential feeding mechanism), 30... (hanger guide stop) positioning mechanism, 35... Transfer mechanism (hanger guide transferring mechanism) , 36...Endless chain,
37... Pin, 38... Hook, 75... Elevating control mechanism (hanger elevating mechanism part), A... First plating tank (first processing tank), B... Second plating tank (second processing tank), J
... jig, M, m... pre-treatment tank, N, n... post-treatment tank,
T...Treatment tank group, W...Work.

Claims (1)

[Scope of Claims] 1. A treatment tank group T in which pre-treatment tanks m, M, at least two first treatment tanks A and second treatment tank B, and post-treatment tanks N, n are sequentially arranged in tandem; a workpiece to be processed; A plurality of hangers 6 for suspending the holding jigs are provided corresponding to each of the hangers 6, and guide and support the hangers 6 so as to be movable up and down between the raised and lowered positions, as well as to guide and support the hangers 6 along the processing tank group T. A plurality of hanger guides 7 are arranged at intervals so as to be movable on a track extending along the same line, and a hanger 6 is attached to each hanger guide 7 at the front and rear end positions of each processing tank of the processing tank group T. The hanger 6 is set in the lowered or raised position by raising and lowering, and the workpiece W attached to the hanger 6 is immersed in the processing tank below the hanger guide 7 in the lowered position and set in the processing state, while in the raised position. a hanger elevating mechanism 10, 75 for positioning the work W above the outside of the processing tank and setting it in a non-processing state; a hanger 6 disposed along the processing tank group T;
The hanger guide 7, which is set in the lowered position, is moved from the pre-treatment tanks m, M to the post-treatment tanks N, n on the above-mentioned orbit.
a progressive feeding mechanism 25, which intermittently transports the particles at a predetermined pitch toward the processing tank; The hanger guide 7 that has arrived at the front end position of the processing tank A or B where the raising position setting operation is selectively performed by the 75 is moved to the lower part of the hanger guide 7 within the one-pitch transfer period of the hanger guide by the sequential feeding mechanism 25. A workpiece processing device configured with a hanger guide transfer mechanism 35 that transfers the processing tank A or B from the front end to the rear end at once. 2. The processing tanks m, M, A, B, N, and n are arranged in a substantially U-shape, and an endless track is provided for transporting each hanger guide 7 along the U-shaped arrangement processing tank group.
Apparatus described in section. 3 Endless chain mechanisms 36, 40 in which the hanger guide transfer mechanism 35 extends from at least the front end of the first processing tank A to the rear end of the second processing tank B following the first processing tank A; and the endless chain mechanism. A hanger guide 7 comprising a plurality of hook mechanisms 37 and 38 attached at a predetermined interval to an endless chain 36 of the hanger guide 7, in which the hook member 38 of the hook mechanism is located in front of the hanger guide transfer mechanism when the hanger guide transfer mechanism is driven.
The lower end portion 39 of the hanger guide 7 is engaged with the lower end portion 39 of the hanger guide 7 to move the hanger guide 7 forward at once, while the lower end portion 39 of the hanger guide 7 is intermittently transferred forward by the sequential feeding mechanism 25 when the hook members 38 are not driven. 3. The device according to claim 1 or 2, wherein the device rotates through the pin 37 of the hook mechanism and does not engage with the hanger guide upon collision with the hanger guide.