JP4174828B2 - Surface treatment equipment - Google Patents

Description

  The present invention relates to a surface treatment apparatus for performing various treatments on the surface of an object to be processed and continuously feeding it.

[Conventional technology]
2. Description of the Related Art Conventionally, a surface treatment apparatus is known in which an object to be processed is continuously supplied and a surface of the supplied object to be processed is subjected to physical, chemical and other various processes and continuously sent out. In such a conventional surface treatment apparatus 100, as shown in FIG. 3A, the continuously supplied workpieces are subjected to a chemical treatment in, for example, a plurality of chemical treatment steps C1, C2, C3, and C4. At the same time, each of the chemical solution treatment steps is followed by a water washing treatment step D1, D2, D3, D4. And the to-be-processed object to which these series of processes were performed is taken out from the surface treatment apparatus 100 continuously.

  As shown in FIGS. 3B and 3C, the surface treatment apparatus 100 includes a chemical bath 102 for performing chemical treatment on the surface of the workpiece 101 (hereinafter, the workpiece is referred to as a workpiece), and chemical treatment. It comprises a multi-stage washing tank 103 that performs a washing process on the surface of the subsequent workpiece 101 and a conveying means 104 that moves the workpiece 101 while holding it. The chemical tank 102 is disposed in each of the chemical treatment processes C1, C2, C3, and C4, and the water washing tank 103 is disposed in each of the water washing processes D1, D2, D3, and D4.

  The conveying means 104 is attached to the upper end of the holding means 106, a circulating means 105 such as a chain or a rail that is driven by a known driving mechanism and circulates in the surface treatment apparatus 100, a holding means 106 that holds one workpiece 101, and the like. The lifting / lowering means 107 that lifts and lowers the workpiece 101, the lifting / lowering means 107, and the attachment member 108 that is attached to the circulation means 105 and circulates together with the circulation means 105 are provided. A plurality of attachment members 108 are attached to one circulation means 105, one lifting means 107 is mounted on each attachment member 108, and one holding means 106 is attached to each lifting means 107. Thereby, the workpiece | work 101 supplied sequentially is continuously processed by the surface treatment apparatus 100. FIG.

  The workpiece 101 supplied to the surface treatment apparatus 100 is transported to the position X1 where the chemical treatment is to be started and is put into the chemical bath 102. Then, it is transported while being immersed up to the position X <b> 2 where the chemical solution processing is to be finished, and is pulled up from the chemical solution tank 102. Next, the workpiece 101 is transported to the position Y1 where the washing is to be started, and is put into the washing tank 103. Here, since the washing tank 103 is a multistage type, when the workpiece 101 approaches the partition plate 109, the workpiece 101 is once pulled up from the washing tank 103, passes the partition plate 109, and then is again put into the washing tank 103. . And it is conveyed to position Y2 which should finish water washing, and is pulled up from water washing tank 103. As described above, the workpiece 101 is subjected to a predetermined surface treatment by alternately performing the chemical solution treatment step and the water washing treatment step, and is taken out from the surface treatment apparatus 100.

However, such a surface treatment apparatus 100 is expensive because the lifting means 107 is required for all the holding means 106.
In addition, as a cost reduction measure for the surface treatment apparatus, a technique that eliminates the need for a water washing tank by providing water washing means such as a shower in a holding means and circulating it with a work is considered (for example, see Patent Document 1). However, although the technique of Patent Document 1 does not require a water rinsing tank, a means for preventing scattering of water is newly required. Moreover, in the technique of Patent Document 1, as in the conventional surface treatment apparatus 100, lifting means is required for all the holding means.
Japanese Patent Laid-Open No. 6-220652

  The present invention has been made to solve the above-described problems, and an object thereof is to achieve cost reduction of the surface treatment apparatus by reducing the number of lifting means for lifting and lowering the workpiece.

[Means of Claim 1]
The surface treatment apparatus according to claim 1 circulates in a treatment tank that performs a predetermined surface treatment on the workpiece, an elevating unit that can immerse the workpiece in the treatment vessel by moving the workpiece up and down, and a predetermined path. Thus, the transfer means that can move the workpiece continuously, the lower fixed rail that defines the trajectory in which the workpiece moves while immersed in the processing tank, and the workpiece moves without being immersed in the processing tank. And an upper fixed rail for defining a locus.
The conveying means is a circulating rail driven by a driving mechanism, a holding means for holding a work, and an attachment member attached to the circulating rail for holding the holding means so as to be movable up and down and pulling in the circulation direction. The holding means has a protruding portion that is held on the upper fixed rail or the lower fixed rail so as to be movable in the circulation direction.
The elevating means is disposed at at least two positions of the start position where the work can be put into the processing tank and the end position where the work can be pulled up from the processing tank, and the protruding portion is provided at the start position and the end position. The workpiece is transferred between the upper fixed rail and the lower fixed rail, and the work is moved up and down by moving the holding means up and down.
In addition, the mounting member has a flat plate portion having a long through hole in the vertical direction, and a pulling portion that pulls the flat plate portion of the holding means from both the left and right sides is provided on the surface of the flat plate portion of the mounting member. ing. In addition, the protruding portion is provided on the back surface of the flat plate portion of the holding means, is held by the upper fixed rail or the lower fixed rail through the through hole, and penetrates the through hole at the start end position and the end position. Can move up and down.
Thus, if the work is transported to the start position, it can be put into the processing tank by the lifting means, and if the work is transported to the end position, it can be lifted from the processing tank by the lifting means. In this way, if the lifting means is arranged only in a place where lifting is required, it is not necessary to circulate the lifting means together with the holding means, so that the number of lifting means required for one surface treatment apparatus can be greatly reduced. it can.

[Means of claim 2 ]
According to the surface treatment apparatus of the second aspect , the elevating means is also disposed between the start end position and the end position, and the workpiece is in an arbitrary section between the start end position and the end position in the processing tank. Can move.
Thereby, while being able to raise / lower a workpiece | work between a starting end position and an end position, the time which a workpiece | work is immersed in a processing tank can be adjusted.

[Means of claim 3 ]
According to the surface treatment apparatus of claim 3 , the elevating means is also arranged between the start end position and the end position, and the work moves in an arbitrary section between the start end position and the end position outside the processing tank. it can.
Thereby, while being able to raise / lower a workpiece | work between a starting end position and an end position, the time which a workpiece | work is not immersed in a processing tank can be adjusted.

The surface treatment apparatus of the best mode includes a treatment tank for performing a predetermined surface treatment on the work, lifting means that can immerse the work in the treatment tank by raising and lowering the work, and circulating the work through a predetermined path. Conveying means that can move the workpiece continuously, a lower fixed rail that defines a trajectory that moves when the workpiece is immersed in the processing bath, and an upper rail that defines the trajectory that moves when the workpiece is not immersed in the processing bath. And a fixed rail.
The conveying means is a circulating rail driven by a driving mechanism, a holding means for holding a work, and an attachment member attached to the circulating rail for holding the holding means so as to be movable up and down and pulling in the circulation direction. The holding means has a protruding portion that is held on the upper fixed rail or the lower fixed rail so as to be movable in the circulation direction.
The elevating means is disposed at at least two positions of the start position where the work can be put into the processing tank and the end position where the work can be pulled up from the processing tank, and the protruding portion is provided at the start position and the end position. The workpiece is transferred between the upper fixed rail and the lower fixed rail, and the work is moved up and down by moving the holding means up and down.
In addition, the mounting member has a flat plate portion having a long through hole in the vertical direction, and a pulling portion that pulls the flat plate portion of the holding means from both the left and right sides is provided on the surface of the flat plate portion of the mounting member. ing. In addition, the protruding portion is provided on the back surface of the flat plate portion of the holding means, is held by the upper fixed rail or the lower fixed rail through the through hole, and penetrates the through hole at the start end position and the end position. Can move up and down.

[Configuration of Example 1]
A surface treatment apparatus 1 according to this embodiment will be described with reference to the drawings. As shown in FIG. 1, the surface treatment apparatus 1 of the present embodiment includes a chemical bath 3 for performing chemical treatment on the surface of the workpiece 2 and a multistage washing bath 4 for performing washing treatment on the surface of the workpiece 2 after chemical treatment. Then, the conveying means 5 that can continuously move the workpiece 2 by circulating through a predetermined path, and the workpiece 2 is immersed in a treatment tank such as the chemical tank 3 and the washing tank 4 by moving the workpiece 2 up and down. Elevating means 6 capable of moving, and a fixed rail 7 that defines a trajectory on which the workpiece 2 moves.

  As shown in FIGS. 2A and 2B, the conveying means 5 is driven by a known driving mechanism to circulate in the surface treatment apparatus 1, a holding means 9 that holds one work 2, An attachment member 10 is attached to the circulation means 8 and pulls the holding means 9. A plurality of attachment members 10 are attached to one circulation means 8, and one attachment member 10 pulls one holding means 9. Thereby, the workpieces 2 that are sequentially supplied are continuously processed by the surface treatment apparatus 1.

  The circulation means 8 circulates the workpiece 2 in a predetermined circulation direction by circulating in the surface treatment apparatus 1. The circulation means 8 has two upper and lower circulation rails 11 as shown in FIGS. The circulation rail 11 has a U-shaped cross section, and a recess is formed in a direction coaxial with the circulation direction. In the following description, as shown in FIG. 1, the section in which the work 2 cannot be immersed in the treatment tank is defined as the sections A1, A2, A3, A4 from the upstream side in the circulation direction, and the section in which the work 2 can be immersed in the treatment tank. Let it be section B1, B2, B3 from the upstream side. Moreover, since the washing tank 4 is a multistage type, the presence of the partition plate 12 causes a section A3 where the workpiece 2 cannot be immersed in the treatment tank even in the section where the washing tank 4 exists.

  As shown in FIGS. 2 (a) and 2 (b), the holding means 9 has a holding part 13 that holds the workpiece 2 and a to-be-towed part 14 that is pulled by the mounting member 10. The clamping unit 13 includes two arms 15 having joints, and clamps the workpiece 2 so as to clamp the workpiece 2 from the side surface of the workpiece 2. The towed portion 14 has a rectangular flat plate portion 16. A fulcrum 17 of two arms 15 is attached to the lower end of the surface of the flat plate portion 16, and a protruding portion 19 that is hung on a lifting rail 18 described later is provided on the back surface of the flat plate portion 16.

  As shown in FIGS. 2A and 2B, the mounting member 10 has a rectangular flat plate portion 21 having a through hole 20 that is long in the vertical direction. On the surface of the flat plate portion 21, there is provided a pulling portion 22 that holds the flat plate portion 16 of the to-be-towed portion 14 so as to be movable up and down and pulls in the horizontal direction. The tow portion 22 is provided at four positions so as to form a substantially square shape on the surface of the flat plate portion 21 and pulls the flat plate portion 16 of the to-be-drawn portion 14 so as to be held from both the left and right sides. In addition, attachment portions 23 that are attached to the concave portions of the circulation rail 11 are provided at both upper and lower ends of the back surface of the flat plate portion 21. In addition, when the flat plate portion 16 of the towed portion 14 moves up and down, the projecting portion 19 of the holding means 9 moves up and down while penetrating the through hole 20.

As shown in FIG. 2B, the elevating means 6 includes an elevating rail 18 that moves the holding means 9 up and down by hooking the projecting portion 19 of the towed part 14, a drive unit 24 that moves the elevating rail 18 up and down, and a drive A connecting rod 25 for connecting the portion 24 and the elevating rail 18 is provided. Wherein, the lifting rail 18, the recess in the direction of circulation direction coaxial form a shaped cross section of the U is formed. Moreover, as shown in FIG. 1, it is formed so that the protruding portion 19 can be taken in and out in the circulation direction. The drive unit 24 is a known actuator such as a cylinder actuator having a cylinder and a piston, an electric motor, and a hydraulic servo.

  The elevating means 6 is disposed at the start position and the end position in the sections B1, B2, and B3. Further, in the section B <b> 1 where the workpiece 2 can be immersed in the chemical tank 3, the lifting / lowering means 6 is also arranged at an intermediate position between the start end position and the end position. Here, the start position is a position where the workpiece 2 can be put into the processing tank by the lowering of the lifting rail 18. The end position is a position downstream of the start position in the same section as the start position, and is a position where the workpiece 2 can be pulled up from the processing tank by the lifting of the elevating rail 18. In this embodiment, as shown in FIG. 1, the start position b11, the intermediate position b12, the end position b13, the start position b21 and the end position b22 of the section B2, the start position b31 and the end position b32 of the section B3 are determined. Yes.

  As shown in FIG. 1, the fixed rail 7 holds the protruding portion 19 of the holding means 9 so that it can move in the circulation direction. The fixed rail 7 is arrange | positioned at a different level for every area. First, in the sections A1, A2, A3, and A4, the fixed rails 26, 27, 28, and 29 are arranged on the upper stage of each section so that the protruding portion 19 can move in the circulation direction while being raised. In the section B1 where the chemical tank 3 is present, the fixed rails 30 and 31 and the fixed rails 32 and 33 are parallel to the upper and lower two stages so that the protruding portion 19 can move in the circulating direction even when it is raised or lowered. Are arranged. Further, in the sections B2 and B3 (excluding the section A3 in which the partition plate 12 is present) where the washing tank 4 is present, a fixed rail is provided at the lower stage of each section so that the projecting portion 19 can move in the circulating direction. 34 and 35 are arranged.

Here, according to the fixed rail 31, 33, 34 and 35 arranged in the lower stage in the section B1, B2, B3, workpiece 2 Ru can you to move from the starting position to the end position in the processing tank. Further, according to the fixed rail 30, 32 arranged in the upper in the section B1, the workpiece 2 is Ru can you to move from the starting position to the end position outside of the treatment tank.

  In addition, the raising / lowering rail 18 is arrange | positioned instead of the fixed rail 7 in the start end position b11, b21, b31, the intermediate | middle position b12, and the terminal position b13, b22, b32, and the protrusion part 19 is hold | maintained. Further, the elevating rail 18 is disposed with a gap that allows the protruding portion 19 to be transferred to and from the fixed rail 7.

[Operation of Example 1]
The effect | action of a present Example is demonstrated based on drawing. The workpiece 2 supplied to the surface treatment apparatus 1 is clamped by the clamping unit 13 at the supply port. Then, the inside of the surface treatment apparatus 1 is circulated while the chemical treatment and the water washing treatment are alternately performed. And it removes from the clamping part 13 in an extraction port, and takes out from the surface treatment apparatus 1. FIG.

A series of actions of the chemical solution treatment and the water washing treatment will be described with reference to FIG.
First, the projecting portion 19 of the holding means 9 travels on the fixed rail 26 and is transferred to the lifting rail 18 stopped at the upper stage of the start end position b11. During this time, the work 2 moves in the section A1 and reaches the start end position b11. Then, when the projecting portion 19 is transferred to the lifting rail 18 stopped at the upper stage of the starting end position b11, the driving unit 24 is driven, and the projecting portion 19 is lowered together with the lifting rail 18 to the lower stage. Thereby, the workpiece 2 is put into the chemical tank 3.

  Next, the projecting portion 19 is transferred to the fixed rail 31, travels along the fixed rail 31, and is transferred to the lift rail 18 stopped at the lower stage of the intermediate position b <b> 12. Further, it is transferred from the lift rail 18 to the fixed rail 33, travels along the fixed rail 33, and is transferred to the lift rail 18 stopped at the lower stage of the terminal position. During this time, the workpiece 2 moves while being immersed in the chemical bath 3 from the start end position b11 to the end position b13. Then, when the protruding portion 19 is delivered to the lifting rail 18 stopped at the lower stage of the end position b13, the driving portion 24 is driven, and the protruding portion 19 rises together with the lifting rail 18 to the upper stage. Thereby, the workpiece 2 is pulled up from the chemical tank 3. When the workpiece 2 is pulled up, the projecting portion 19 is transferred from the lift rail 18 to the fixed rail 27.

  If it is desired to reduce the chemical treatment time of the workpiece 2 by half, when the projecting portion 19 is delivered to the lifting rail 18 stopped at the lower stage of the intermediate position b12, the drive portion 24 is driven to the intermediate position b12. The workpiece 2 may be pulled up from the chemical tank 3 at the position b12.

  Next, the projecting portion 19 travels on the fixed rail 27 and is transferred to the elevating rail 18 stopped at the upper stage of the start end position b21. During this time, the work 2 moves in the section A2 and reaches the start end position b21. Then, when the projecting portion 19 is transferred to the lifting rail 18 stopped at the upper stage of the starting end position b21, the driving unit 24 is driven, and the projecting portion 19 is lowered together with the lifting rail 18 to the lower stage. As a result, the workpiece 2 is put into the washing tank 4.

  Next, the projecting portion 19 travels on the fixed rail 34 and is transferred to the elevating rail 18 stopped at the lower stage of the terminal position b22. During this time, the workpiece 2 moves from the start end position b21 to the end position b22 while being immersed in the washing tank 4. Then, when the protruding portion 19 is delivered to the lifting rail 18 stopped at the lower stage of the terminal position b22, the driving portion 24 is driven, and the protruding portion 19 rises together with the lifting rail 18 to the upper stage. Thereby, the workpiece | work 2 is pulled up from the washing tank 4. FIG.

  Next, the projecting portion 19 travels on the fixed rail 28 and is transferred to the elevating rail 18 stopped at the upper stage of the start end position b31. During this time, the work 2 moves in the section A3 and reaches the start end position b31. Then, when the projecting portion 19 is delivered to the lifting rail 18 stopped at the upper stage of the start end position b31, the driving portion 24 is driven, and the projecting portion 19 is lowered together with the lifting rail 18 to the lower stage. Thereby, the workpiece | work 2 is thrown into the washing tank 4 again.

  Next, the projecting portion 19 travels on the fixed rail 35 and is transferred to the lifting rail 18 stopped at the lower stage of the terminal position b32. During this time, the workpiece 2 moves from the start end position b31 to the end position b32 while being immersed in the washing tank 4. Then, when the projecting portion 19 is transferred to the lifting rail 18 stopped at the lower stage of the terminal position b32, the driving portion 24 is driven, and the projecting portion 19 rises together with the lifting rail 18 to the upper stage. Thereby, the workpiece | work 2 is pulled up from the washing tank 4. FIG. When the workpiece 2 is pulled up, the projecting portion 19 is transferred from the lift rail 18 to the fixed rail 29. Then, the projecting portion 19 travels on the fixed rail 29 and reaches the next start position (not shown).

[Effect of Example 1]
The raising / lowering means 6 of the surface treatment apparatus 1 of the present embodiment is disposed at the start end positions b11, b21, b31 and the end positions b13, b22, b32 in the sections B1, B2, B3 in which the workpiece 2 can be immersed in the treatment tank.
As a result, the lifting means 6 is disposed at a minimum position where the workpiece 2 needs to be lifted, and thus it is not necessary to circulate the lifting means 6 together with the holding means 9 that holds the workpiece 2 as in the prior art. As a result, the number of lifting means 6 required for one surface treatment apparatus 1 can be greatly reduced.

According to the surface treatment apparatus 1 of the present embodiment , the workpiece 2 can be moved from the start position to the end position in the treatment tank by the fixed rails 31, 33, 34, and 35 arranged in the lower stage, and the upper stage. By the fixed rails 30 and 32 arranged, the workpiece 2 can be moved from the start position to the end position outside the processing tank.
Thereby, while being able to move the workpiece | work 2 immersed in the chemical | medical solution tank 3 and the water washing tank 4, when a chemical | medical solution process is unnecessary, the workpiece | work 2 can be moved without being immersed in the chemical | medical solution tank 3. .

The raising / lowering means 6 of the surface treatment apparatus 1 of the present embodiment is also disposed at the intermediate position b12.
Thereby, the workpiece | work 2 can be pulled up from the chemical | medical solution tank 3 in the intermediate position b12, or can be thrown into the chemical | medical solution tank 3. FIG. For this reason, the choice of chemical | medical solution processing time can be increased.

[Modification]
In the present embodiment, only one lifting / lowering means 6 is disposed between the start end position b11 and the end position b13 of the section B1, but two or more lifting / lowering means 6 may be disposed. In this case, the options for the chemical treatment time are further expanded.
In the present embodiment, the upper fixed rail 7 is not disposed in the sections B2 and B3, but the fixed rail 7 may also be disposed in the upper stage.

  In this embodiment, one protruding portion 19 is transferred to one lifting rail 18 and is raised or lowered. However, two or more protruding portions 19 are transferred to one lifting rail 18. It may be possible to ascend or descend simultaneously. In the present embodiment, one work 2 is held by one holding means 9, but two or more works 2 may be held by one holding means 9. In these cases, two or more workpieces 2 can be put into the processing tank at the same time or pulled up from the processing tank.

It is explanatory drawing which shows the flow of the chemical | medical solution process and water washing process in a surface treatment apparatus. (A) is a front view of a holding means, an attachment member, and a raising / lowering means, (b) is a side view of a holding means, an attachment member, and an raising / lowering means. (A) is explanatory drawing which shows the arrangement | sequence of the process in the conventional surface treatment apparatus, (b) is explanatory drawing which shows the flow of the chemical | medical solution process in the conventional surface treatment apparatus, and the washing process, (c) is FIG. 5 is a side view of a conventional holding means, attachment member, and elevating means.

Explanation of symbols

1 Surface treatment device 2 Workpiece (object to be treated)
3 chemical tank (treatment tank)
4 water washing tank (treatment tank)
5 conveying means 6 lifting means 7 fixed rail
9 Holding means
10 Mounting member
11 Circulation rail
16 Flat part (flat part of holding means)
19 Projection
20 Through hole
21 Flat plate (flat plate of the mounting member)
22 Traction part
26 Fixed rail (upper fixed rail)
27 Fixed rail (upper fixed rail)
28 Fixed rail (upper fixed rail)
29 Fixed rail (upper fixed rail)
30 fixed rail ( upper fixed rail )
31 Fixed rail ( lower fixed rail )
32 Fixed rail ( upper fixed rail )
33 Fixed rail ( lower fixed rail )
34 Fixed rail ( lower fixed rail )
35 Fixed rail ( lower fixed rail )
b11 Start position
b13 End position
b21 Start position
b22 End position
b31 Start position
b32 End position

Claims (3)

A treatment tank for applying a predetermined surface treatment to the workpiece;
Elevating means capable of immersing the object to be treated in the treatment tank by raising and lowering the object to be treated;
Conveying means capable of continuously moving the object to be processed by circulating a predetermined path;
A lower fixed rail that defines a trajectory in which the workpiece is immersed in the treatment tank; and
An upper fixed rail that defines a trajectory that moves in a state where the object to be processed is not immersed in the processing tank;
The conveying means is attached to the circulation rail driven by a drive mechanism, the holding means for holding the object to be processed, and the circulation rail, holds the holding means so as to be movable up and down, and in the circulation direction. An attachment member to be pulled,
The holding means has a protruding portion that is held on the upper fixed rail or the lower fixed rail so as to be movable in the circulation direction,
The lifting means is
Arranged at at least two locations of a starting position where the object to be processed can be put into the processing tank and a terminal position where the object can be pulled up from the processing tank;
At the start position and the end position, the protruding portion is transferred between the upper fixed rail and the lower fixed rail, and the workpiece is moved up and down by moving the holding means up and down ,
The mounting member has a flat plate portion having a long through hole in the vertical direction,
On the surface of the flat plate portion of the mounting member, a traction portion that pulls the flat plate portion of the holding means from both left and right sides is provided,
The projecting portion is provided on the back surface of the flat plate portion of the holding means, is held by the upper fixed rail or the lower fixed rail through the through hole, and at the start position and the end position, A surface treatment apparatus capable of moving up and down while penetrating through a through hole . The surface treatment apparatus according to claim 1,
The elevating means is also disposed between the start position and the end position,
The surface treatment apparatus characterized in that the object to be treated can move in an arbitrary section between the start position and the end position in the treatment tank . In the surface treatment apparatus according to claim 1 or 2,
The elevating means is also disposed between the start position and the end position,
The surface treatment apparatus characterized in that the object to be treated can move in an arbitrary section between the start position and the end position outside the treatment tank .

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