JP2002285397A - Surface treatment equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide surface treatment equipment which is capable of improving surface treatment quality and production efficiency while facilitating the adjust ment of mounting spacings in the conveying direction of flat shaped objects and facilitating the attachment and detachment of the flat shaped objects. SOLUTION: A conveyance mechanism for conveying the flat shaped objects is formed of a conveyor, hangers and hanger attaching and detaching means. The hanger attaching and detaching means have plural loop materials attached to either one of the conveyor side and the respective hanger sides and plural projecting materials attached to the other thereof, are engageable and separable with and from each other by utilizing the elastic deformation of at least either or both of the loop materials and the projecting materials and are formed strong to the tensile force in the conveyance direction and weak to the tensile force in the direction orthogonal with the conveyance direction in the engaging state of both.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a transport mechanism for transporting a flat plate-shaped object in a transfer direction along a transfer path while maintaining a vertically suspended state of the flat plate-shaped object. The present invention relates to a surface treatment apparatus that performs a surface treatment while supplying power from a power supply unit to a flat plate-shaped object.

[0002]

2. Description of the Related Art In a surface treatment method of an object to be treated, each of the treatment tanks arranged in a line is made transportable in order, and the object to be treated is immersed in a first treatment tank and subjected to the treatment for a predetermined time. After the treatment, the object is pulled up and transported to the next processing tank, and the processing is performed in the next processing tank for a predetermined time. Hereinafter, there are a batch method in which a similar procedure is repeated, and a continuous method in which an object to be processed is immersed in a processing tank that is long in the transport direction, and the object is continuously transported while maintaining the immersion state of the object.

[0003] Here, when the object to be processed is a flat plate and is processed in a vertically suspended state, the surface treatment quality of each processing tank, that is, each flat plate, tends to vary in the batch method. Composition of processing solution, power supply mode and power concentration,
This is because there is variation such as a masking effect.

[0004] On the other hand, in the continuous method, there is very little variation in surface treatment quality for each flat plate-shaped product, and the productivity is high.
Thus, the object to be processed is a printed wiring board (plate-shaped object)
In the case of, the continuous method is often adopted.

In this continuous type surface treatment apparatus, a flat plate-shaped object is directly or indirectly attached to a transport mechanism in a vertically suspended state. That is, for example, the respective surfaces (both surfaces) of the flat plate-shaped object (work Wn1) illustrated in FIG. 7A are indirectly mounted via the mounting member 90 in a state of being parallel to the transport path, that is, the transport (X) direction. Can be

Then, a flat plate-shaped object (work Wn1) and a rear plate-shaped object (work Wn1) with respect to the transport mechanism.
2), the distance Dn between the rear end (left end) of the front flat plate-shaped object (work Wn1) and the front end (right end) of the rear flat plate-shaped object (work Wn2) in the X direction.
However, due to the electric action when processing while supplying power, apparently 1
The positional relationship is such as to form a continuous surface.

Here, when the transport mechanism is driven, the flat objects (workpieces Wn1 and Wn2) are continuously transported in the X direction along the transport path while maintaining the vertically suspended state. Then, during transport (transition) in the surface treatment tank, power is supplied to each plate-shaped object from a power supply unit (not shown). Therefore, since the surface treatment conditions of each plate-shaped object can be made uniform,
High quality surface treatment without variation can be performed.

[0008]

However, there is no guarantee that the size of the flat plate-shaped object (surface) is constant. In the era of diversification, more and more types of flat objects (surfaces) are subject to surface treatment. In addition, there is a tendency that more and more flat-shaped objects (surfaces) of different sizes are mixed and attached to the transport mechanism.

However, in the conventional continuous type surface treatment apparatus, a flat plate is attached to the transfer mechanism by using the mounting member 90 fixed at a predetermined pitch (for example, pitches p, d, p, d,... In FIG. 7B). Shaped objects are held in a vertically suspended state. Therefore, when the size of one or both of the front flat plate-shaped object (surface) and the rear flat plate-shaped object (surface) changes, the rear end of the front flat plate-shaped object and the rear flat plate-shaped object adjacent in the X direction. The distance from the front end of the image is enlarged or reduced.

[0010] More specifically, the standard distance Dn when the work Wn (Wn1, Wn2) having the standard dimension in the X direction shown in FIG. 7A is continuously mounted in a vertically suspended state is Dn. If, for example, a work Ws or a long work Wl having a short dimension in the X direction shown in FIG. 7B is mounted, the distance Dw between the work Ws and the work Wn is wider (larger) than the distance Dn, and The distance Ds with Wn is narrower (smaller) than the distance Dn.

Accordingly, the adjacent front flat plate-shaped object [W
s (Wn)] at the rear end and the rear flat plate-shaped object [Wn (Wl)]
The distance [Dw (Ds)] from the front end cannot be maintained in such a positional relationship that apparently forms one continuous surface due to the electric action, and other inconveniences are likely to occur.

That is, when the front-back distance is widened (Dn
In (Dw), since power concentration occurs at the rear end of the adjacent front plate-shaped object (Ws) and at the front end of the rear plate-shaped object (Wn), the surface treatment conditions of each plate-shaped object (surface) are limited. It becomes uneven and the surface treatment quality deteriorates. On the other hand, when the front-rear distance is reduced (Dn → Ds), a mechanical collision is likely to occur between the rear end of the adjacent front flat plate (Wn) and the front end of the rear flat plate (Wl).

However, if the mounting position (pitch p) of the mounting member 90 to the transport mechanism (for example, a chain conveyor) is adjusted and changed to an appropriate interval by, for example, tightening and loosening bolts and nuts, the production will not proceed. Efficiency is greatly reduced. Moreover, if the mounting method is welding or a mechanism in which a hanger is interposed between each clamp and the transport mechanism, not only is the process more complicated and time-consuming, but the adjustment change operation itself often cannot be performed.

An object of the present invention is to provide a surface treatment apparatus capable of improving the surface treatment quality and the production efficiency while facilitating the adjustment of the mounting interval in the transport direction of the flat plate-shaped object and the easy attachment and detachment of the flat plate-shaped object. Is to do.

[0015]

According to a first aspect of the present invention, there is provided a surface treatment apparatus having a transport mechanism for transporting a flat plate-shaped object in a transfer direction along a transfer path while maintaining a vertically suspended state of the flat plate-shaped object. In a surface treatment apparatus that performs a surface treatment while supplying power from a power supply unit to a flat plate-shaped object being transported in the tank, the transport mechanism includes:
A conveyor movable in the transport direction, a plurality of hangers capable of holding the flat plate-shaped object while maintaining the vertically suspended state, and each hanger being capable of being mounted on the conveyor at intervals in the transport direction; And detachable hanger attachment / detachment means, the hanger attachment / detachment means comprising a plurality of loop members attached to one of the conveyor side and each hanger side and a plurality of protrusion-like members attached to the other side. It can be engaged and disengaged by utilizing elastic deformation of one or both of the loop material and the projection material, and is strong against the pulling force in the transport direction and orthogonal to the transport direction in the engaged state. This is a surface treatment device that is weakly formed in the tensile force in the direction.

In this invention, when the hanger is pressed against the conveyor, the plurality of loop members attached to either the conveyor side or each hanger side come into contact with the plurality of projecting members attached to the other side. Both of the loop material and the protruding material can be engaged by utilizing the elastic deformation of one or both of them. That is, since the hanger can be mounted at an arbitrary position on the conveyor, it is easy to adjust the mounting interval of the flat plate-shaped object in the transport direction. The mounting itself is very simple.

After this mounting operation, the hanger is caused to hold the flat plate-shaped object in a vertically suspended state. It may be formed so that the flat-shaped object is held on the hanger in advance, and then the mounting operation of the hanger is performed.

Thus, when the conveyor is operated, it is possible to convey each flat-shaped object in the conveying direction along the conveying path while maintaining the vertically suspended state. The hanger does not fall off the conveyor because it is strong against the pulling force in the transport direction in the engaged state. Then, the surface treatment can be performed while the power is supplied from the power supply means to the flat plate-shaped object being conveyed in the surface treatment tank.

Even if the size of the front and rear plate-shaped objects (surfaces) is changed, the distance between the rear end of the adjacent front plate-shaped object and the front end of the rear flat plate-shaped object is apparently 1 in terms of electric action. Since the position can be easily adjusted so that the sheet can be held at a position forming a continuous surface, the surface treatment conditions of each flat plate-shaped object can be maintained constant, so that high quality processing without variation can be performed.

After the completion of the surface treatment, the hanger is peeled off from the conveyor. Since the tensile force in the direction orthogonal to the transport direction in the engagement state of the two is weaker than the tensile force in the transport direction, it can be easily, easily, and quickly disengaged without requiring a large force. .

Therefore, it is possible to improve the surface treatment quality and the production efficiency while facilitating the adjustment of the mounting interval in the transport direction of the plate-shaped object and the easy attachment and detachment of the plate-shaped object.

The invention according to claim 2 is the surface treatment apparatus wherein the conveyor is selected from a flat belt conveyor, a timing belt conveyor or a chain conveyor.

In this invention, the conveyor is selected from a flat belt conveyor, a timing belt conveyor or a chain conveyor. The flat belt conveyor has a large engagement area with the hanger. Timing belt conveyors can further improve transport accuracy. The chain conveyor has a simple structure.

Therefore, in addition to providing the same operation and effect as the case of the first aspect of the invention, the present invention has a wide adaptability to the type and form of the object to be processed, the layout of the apparatus, the processing quality, and the like.

According to a third aspect of the present invention, the hanger attaching / detaching means has a first tape-like shape in which the plurality of elastically deformable loop members are densely implanted on the front side and the back side can be attached to the conveyor. A surface treatment apparatus comprising: a member; and a second tape-shaped member having a plurality of protrusions densely implanted on a front surface side and a back surface attached to the hanger.

In this invention, the first tape-shaped member constituting a part of the hanger attaching / detaching means is attached to the conveyor by attaching the back surface of the first tape-shaped member to the conveyor. This first
A plurality of elastically deformable loop members are densely implanted on the surface side of the tape-shaped member. The second tape-shaped member constituting the other part is attached to the hanger by attaching the back surface side to the hanger. A plurality of projecting members are densely implanted on the surface side of the second tape-shaped member.

Thus, the protrusion of the second tape-like member attached to the hanger is pushed into the loop material of the first tape-like member attached to the conveyor, and the first tape-like member and the second tape-like member are pushed. By engaging the member, the flat-shaped article attached to the hanger can be attached to the conveyor at a selected interval in the transport direction.

Here, a first tape-like member having a plurality of elastically deformed loop members implanted thereon is mounted on a conveyor, and a second tape-like member having projections densely implanted thereon is mounted on a hanger. Therefore, the relatively expensive first tape-shaped member can be used repeatedly and has a long service life. Things.

Therefore, in addition to the same effects as those of the first and second aspects of the present invention, it is possible to further improve the economy and durability.

Further, the invention according to claim 4 is characterized in that the power supply means includes a power supply bar capable of contacting the hangers being conveyed in the conveyance direction from below and supplying power to the hangers, and being conveyed by the conveyor. It is a surface treatment apparatus formed so as to be capable of continuously supplying power to each of the hangers.

In this invention, each hanger is held in contact with the power supply bar which constitutes a part of the power supply means from below.
Here, when the hanger is transported in the transport direction by the conveyor, the hanger is transported in contact on the power supply bar, and power is continuously supplied through the power supply bar during the transport.

Therefore, the vertical and downward holding force of the conveyor and the hanger attaching / detaching means of the hanger attaching / detaching means can be reduced, and a smooth power supply can be performed while preventing the surface of the power supply bar from being rendered nonconductive. That is, in addition to providing the same operation and effect as in each of the first to third aspects of the present invention, it is possible to further reduce the size and structure of the hanger attaching / detaching means and the power supply means.

[0033]

Embodiments of the present invention will be described below in detail with reference to the drawings.

As shown in FIGS. 1 to 6, the present surface treatment apparatus maintains a conveyor (31) capable of moving the transfer mechanism 20 in the transfer (X) direction and a flat shape (work W) suspended vertically. A plurality of hangers 41 that can be held while being held, and hanger attaching / detaching means 51 that can be attached to and detached from the conveyor (31) with the hangers 41 spaced apart in the X direction. Has a plurality of loop members 54 attached to the conveyor side (or each hanger side) and a plurality of protrusions 58 attached to each hanger side (or the conveyor side). Both the loop member 54 and the protruding member 58 (or at least one of them) can be engaged and disengaged by utilizing the elastic deformation thereof, and the tensile force in the X direction when the both members 54 and 58 are engaged. It is formed weakly in the direction of the tensile force perpendicular to the strong and the X-direction.

The basic configuration and function of the present surface treatment apparatus is that the work W is transported along the transport path R while maintaining the vertically suspended state of the flat object (printed wiring board in this embodiment: work W). It has a transport mechanism 20 for transporting in the X) direction, and can perform surface treatment while supplying power from the power supply means 60 to the flat plate-shaped object (W) being transported in the surface treatment tank 10. That is, the present surface treatment apparatus constitutes a plating apparatus capable of plating a printed wiring board.

In FIG. 1B, a plurality of surface treatment tanks 1 are shown.
Numeral 0 is disposed along the X direction in which the workpiece W is transported by the transport mechanism 20, that is, along the transport path R having an elliptical (arc / linear) locus. The surface treatment tank 10 includes a pretreatment tank, a plating tank, a post-treatment tank, and the like. FIG. 1A shows a part of the transport mechanism 20 corresponding to a linear portion of the transport path R.

As shown in FIGS. 1 and 2, the transport mechanism 20
A conveyor (31) that can move in the X direction (the direction perpendicular to the paper in FIG. 2) that is the same as the direction of the transport path R, and is formed so as to be able to hold a flat-shaped object (printed wiring board ... work W) while maintaining a vertically suspended state. And a plurality of hanger attachment / detachment means 51 which can be attached to and detached from the conveyor (31) with the hangers 41 spaced apart in the X direction.

The conveyor (31) is composed of four combinations, one for straight lines on both sides and one for arcs at both ends in the longitudinal direction. A typical double-sided straight belt conveyor 31 is a flat belt conveyor 31 that can run in the X direction.
And a plurality of horizontal members 22 extending between the vertical members 21 on both sides of the surface treatment tank 10 shown in FIGS. 1 to 3 and extending along the transport path R. Mounted on the supporting mechanisms (21, 22).

The flat belt conveyor 31 is rotatably supported by a bracket 23 integral with the horizontal member 22 shown in FIG. 2, and is disposed opposite to the driving rotator 32 in the direction perpendicular to the paper of FIG. At least one of the driving rotary members 32 is fixedly mounted on the horizontal member 22 via a driving shaft 33, sprockets 24 (24B, 24A), and a chain 25 directly connected thereto. The transfer operation is performed by the drive motor 26.

The conveyor (31) is connected to a hanger 41.
The flat belt conveyor 31 having a large engagement area with the belt belt conveyor 31 is selected, but is not limited thereto. For example, a timing belt conveyor that can further improve the conveyance accuracy, a chain conveyor with a further simpler structure, or a conveyor with another structure may be selected (adopted).

The hanger 41 is a flat plate (work W).
As shown in FIG. 4, the upper surface of the hanger main body 43 has a detachable surface 4 having an upward flat shape as shown in FIG.
And a clamp 4 for holding the work W in the lower part.
8 is attached.

The hanger 41 has a locking portion 46 having a downward locking surface with a screw and a hanger body 43.
And a holder portion 47 is provided in parallel with the power supply bar 63 and surrounds the upper portion of the power supply bar 63. The power supply bar 63 can slide in the X direction.

That is, the hanger main body 43 is
A power-receiving portion is formed together with the power supply portion 6 and the holder portion 47, and a vertical section constituting a part of the power supply means 60 shown in FIG. To the work W held by the clamp 48.

The power supply means 60 is capable of contacting each hanger 41 (the downward locking surface of the locking portion 46) being conveyed in the X direction from below, and each hanger 41 (the hanger body 43).
It is understood that a power supply bar 63 that can supply power to the hangers 41 is formed so as to be able to continuously supply power to each hanger 41 being conveyed by the conveyor (31).

Further, since the power supply bar 63 comes into contact with each hanger 41 (locking portion 46) from below, the load applied to the transport mechanism 20 and the hanger attaching / detaching means 51 from the hanger 41 (work W) side is greatly reduced. it can. That is, the transport mechanism 20 and the hanger attaching / detaching means 51 can be reduced in size and weight.

The power supply bar 63 extending in the X direction is bolted to the bracket 23A and is fixed in the posture shown in FIG.

The hanger attaching / detaching means 51 is provided for each hanger 41.
Means that can be attached to and detached from a conveyor (flat belt conveyor 31) with a gap in the X direction.
A plurality of elastically deformable loop members 54 are densely implanted in the first tape member 53 on the front side (lower side) shown in FIG. 7A, and the back side (upper side) is on a conveyor (front side ... lower side). A first tape-like member 52 that can be attached and a plurality of protrusions 58 shown in FIG.
A second tape-shaped member 5 densely implanted on the rear surface 7 and having a back side (lower side in the figure) that can be attached to the hanger 41 (removable surface 45).
6 are formed.

The protruding material 58 is not limited to the mushroom shape shown in FIG. 5B, but may have another form (for example, a sandwich shape shown in FIG. 6). The form of the loop member 54 is not limited. Further, the first tape-shaped member 52 is not limited to being continuous, and may be in the form of a plurality of intermittent pieces arranged at intervals in the X direction.

In this embodiment, the tape can be detached with a relatively small tensile force in a direction perpendicular to the tape surface (vertical direction in FIG. 5).
Focusing on the fact that it does not come off with a small tensile force in the direction parallel to the tape surface (the direction perpendicular to the paper surface in FIG. 5), the LOOP of the magic tape (registered trademark of Kuraray Co., Ltd.)
(Tape material) and HOOK (projection material).

The surface on the conveyor (31) side where the magic tape (hanger attaching / detaching means 51) is attached and the surface on each hanger 41 side may be vertical surfaces instead of horizontal surfaces shown in FIGS.

In the embodiment having such a configuration, the hanger 41
3 is pressed upward from below in FIG. 3, the plurality of loop members 54 attached to the conveyor (31) side and the plurality of protrusions 58 attached to the hanger 41 side shown in FIG. Are brought into contact with each other, and by utilizing the elastic deformation of both the loop material 54 and the projection-like material 58,
4,58 can be engaged.

More specifically, the first tape-like member 52 constituting a part of the hanger attaching / detaching means 51 is attached to the flat belt conveyor 31 by attaching the back surface thereof to the flat belt conveyor 31. A plurality of elastically deformable loop members 54 are densely implanted on the surface side of the first tape-shaped member 52. By attaching the second tape-shaped member 56 constituting the other part to the hanger 41 on the back surface side,
Attach to hanger 41. This second tape-shaped member 56
A plurality of projecting members 58 are densely implanted on the surface side of.

Thus, the projecting material 5 of the second tape-like member 56 attached to the hanger 41 is attached to the loop material 54 of the first tape-like member 52 attached to the flat belt conveyor 31.
8, the first tape-shaped member 52 and the second tape-shaped member 56 are engaged with each other, so that the X-direction interval of the flat plate-shaped object (W) attached to the hanger 41 is set to the selected interval Dn. Then, it can be mounted so that it can be transported by the flat belt conveyor 31.

That is, since the hanger 41 can be mounted at an arbitrary position on the flat belt conveyor 31, the mounting interval in the X direction of the plate-shaped object (work W) (see FIG. 7).
Adjustment is easy. The mounting itself is very simple.

Further, in this embodiment, the first tape-like member 5 having the plurality of elastically deformed loop members 54 implanted therein is used.
2 is mounted on the hanger 41 on the flat belt conveyor 31 and the second tape-like member 56 on which the projecting material 58 is densely implanted is attached. The tape-like member 52 can be used repeatedly, has a long life, and the second tape-like member 56 requiring a large number can be made simple in structure and relatively inexpensive. Therefore, it is economical and the durability can be further improved.

After the completion of the mounting operation, the hanger 41 holds the flat plate-shaped object (work W). Hanger 41 in advance
The work may be formed such that the work of mounting the hanger 41 is performed after the flat-shaped object (work W) is held on the work piece.

Thus, when the flat belt conveyor 31 is operated, each flat plate-shaped object (work W) can be transported in the X direction along the transport path R while maintaining the vertically suspended state. Since the two members are strong in the X-direction tensile force in the engaged state, there is no fear that the hanger 41 will fall off the flat belt conveyor 31.

Then, the feeding means 60 (6) shown in FIG.
Surface treatment can be performed while supplying power from 3). Even if the size of the front and rear plate-shaped objects (surfaces) is changed, the distance between the rear end of the adjacent front plate-shaped object and the front end of the rear plate-shaped object is apparently one continuous sheet in terms of electric action. The position can be easily adjusted so that it can be held at a position forming a plane.

That is, in the case of FIG. 7B, for example, a standard work Wn and other works Ws, Wl
Can be set to an ideal (standard) Dn between adjacent front and rear ends of each work W. Therefore, since the surface treatment conditions of each plate-shaped object (W) can be kept constant, high quality treatment without variation can be performed.

Each of the hangers 41 is connected to the power supply bar 6, which constitutes a part of the power supply means 60, from below through the locking portion 46.
3 and is held in contact therewith. Here, when the hanger 41 is transported in the X direction by the flat belt conveyor 31, the hanger 41 is transported in contact with the power supply bar 63, and the workpiece W suspended vertically via the power supply bar 63 and the hanger body 43 during the transport. Power can be supplied continuously.

Accordingly, the vertical belt conveyor 31 and the hanger attaching / detaching means 51 can reduce the vertical holding force of the plate-shaped object (W) in the vertical direction, and can be polished by contact. And smooth power supply. That is, miniaturization and structure simplification of the hanger attaching / detaching means 51 and the power feeding means 60 can be achieved.

After the surface treatment, the hanger 41 is peeled off from the flat belt conveyor 31. Since the tensile force in the direction perpendicular to the conveying (X) direction in the engaged state of the two members (the loop member 54 and the projecting member 58) is weaker than the tensile force in the X direction, a large force is not required. The hanger 41 can be easily and easily detached from the flat belt conveyor 31 quickly. The work W can be removed from the hanger 41 while the hanger 41 is attached to the flat belt conveyor 31.

Accordingly, it is possible to improve the surface treatment quality and the production efficiency while facilitating the adjustment of the mounting interval in the X direction of the flat plate-shaped object (W) and the easy attachment and detachment of the flat plate-shaped object.

Further, since the conveyor is formed from the flat belt conveyor 31, a large engagement area with the hanger 41 can be obtained. Note that a timing belt conveyor that can further improve the transfer accuracy or a chain conveyor with a simple structure may be selected. Thus, the object to be processed (W)
Widely adaptable to the type and form of the device, the layout of the device, the processing quality, and the like.

Further, since the present surface treatment apparatus constitutes a plating apparatus for plating a printed wiring board having a flat shape (W), a high quality printed wiring board can be reliably produced.

In the above embodiment, the hanger attaching / detaching means 51 uses a magic tape having LOOP (tape material) and HOOK (projection-like material). (3
1) It has a plurality of loop members 54 attached to one of the side and each hanger 41 side and a plurality of projection members 58 attached to the other side, and one of the loop member 54 and the projection member 58 It is possible to engage and disengage using one or both elastic deformations, and in both engagement states, to be strong in the tensile force in the transport (X) direction and weak in the tensile force in the direction perpendicular to the transport direction. As far as possible, the present invention can be practiced even if a tape or the like having a structure capable of exhibiting the same operation and effect as the above-mentioned magic tape is employed instead of the above-mentioned magic tape.

[0067]

According to the first aspect of the present invention, a conveyor capable of moving the transfer mechanism in the transfer direction, a plurality of hangers capable of holding the flat plate-shaped object while maintaining the vertically suspended state, and transferring each hanger in the transfer direction. Hanger attachment / detachment means that can be attached to and detached from the conveyor at an interval, and the hanger attachment / detachment means includes a plurality of loop members attached to one of the conveyor side and each hanger side and the other side. And a plurality of protrusions attached to the loop member, and can be engaged and disengaged by utilizing elastic deformation of one or both of the loop member and the protrusion member. Since it is formed to be strong against force and weak against tensile force in the direction perpendicular to the transport direction, it is easy to adjust the mounting interval in the transport direction of flat-shaped objects and easily attach and detach flat-shaped objects. It is possible to improve the processing quality and production efficiency.

According to the second aspect of the present invention, since the conveyor is selected from a flat belt conveyor, a timing belt conveyor or a chain conveyor, the same effect as that of the first aspect of the invention can be obtained. In addition to the above, the adaptability to the type and form of the object to be processed, the layout of the apparatus, the processing quality, and the like is wide.

According to the third aspect of the present invention, a plurality of elastically deformable loop members are densely implanted on the front surface side of the hanger attaching / detaching means, and the back surface side of the first tape-shaped member can be attached to the conveyor. Since the plurality of projecting members are densely implanted on the front surface side and the second tape-shaped member that can be attached to the hanger is formed on the rear surface side, the case of each of the inventions of claim 1 and claim 2 In addition to providing the same effect, it is more economical and can further improve the durability.

Further, according to the fourth aspect of the present invention, the power supply means includes a power supply bar which is slidable and capable of supplying power by contacting each hanger being conveyed from below, and is continuously connected to each hanger being conveyed by the conveyor. Because it is formed so that power can be supplied,
The vertical holding force of the conveyor and the hanger attaching / detaching means on the object to be processed can be reduced, and smooth power supply can be performed while preventing the surface of the power supply bar from being rendered nonconductive. That is, in addition to the effects similar to those of the first to third aspects of the present invention, it is possible to further reduce the size and the structure of the hanger attaching / detaching means and the power supply means.

[Brief description of the drawings]

FIG. 1 is a schematic plan view illustrating a surface treatment apparatus according to an embodiment of the present invention.

FIG. 2 is also a diagram mainly illustrating a transport mechanism.

FIG. 3 is a diagram mainly illustrating the relationship between a conveyor, a hanger, and a flat plate-shaped object.

FIG. 4 is a diagram mainly illustrating a hanger attaching / detaching unit and a power supply unit;

FIG. 5 is a view for explaining details of a hanger attaching / detaching means.

FIG. 6 is a view for explaining a modification of the hanger attaching / detaching means.

FIG. 7 is a diagram for explaining a problem in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Surface treatment tank 20 Transport mechanism 21 Vertical member 22 Horizontal member 23 Bracket 24 Sprocket 25 Chain 26 Transport motor 31 Flat belt conveyor (Conveyor) 32 Driving rotating body 33 Drive shaft 41 Hanger 43 Hanger body (power receiving part) 45 Detachable Surface 46 Locking part 47 Holder part 48 Clamp 51 Hanger attaching / detaching means 52 First tape member (Loop member) 53 First tape member 54 Loop member 56 Second tape member (Protrusion member) 57 Second Tape material 58 Projecting material 60 Power supply means 63 Power supply bar 90 Mounting member W Work (flat plate ... printed wiring board) R Transport path X Transport direction

Claims (4)

[Claims] 1. A feeding mechanism for transporting a flat plate-shaped object in a transfer direction along a transfer path while maintaining a vertically suspended state of the flat plate-shaped object, and supplying power to the flat plate-shaped object being transferred in the surface treatment tank. A surface treatment apparatus that performs surface treatment while supplying power from a unit, wherein the transport mechanism comprises: a conveyor movable in the transport direction; and a plurality of hangers capable of holding the flat plate-shaped object while maintaining the vertically suspended state. Hanger attaching / detaching means which can be attached to and detached from the conveyor at intervals in the transport direction, and each hanger is attached to either the conveyor side or each hanger side. A plurality of loop members and a plurality of protrusion members attached to the other side, and can be engaged and separated by utilizing elastic deformation of one or both of the loop members and the protrusion members. Wherein the tensile force in the conveying direction of the tensile force perpendicular to the strong and the transport direction is the direction being formed weakly, the surface treatment apparatus in the engaged state of. 2. The surface treatment apparatus according to claim 1, wherein the conveyor is selected from a flat belt conveyor, a timing belt conveyor, and a chain conveyor. 3. A first tape-shaped member, wherein the hanger attaching / detaching means is provided with a plurality of elastically deformable loop members densely implanted on a front side and a back side attached to the conveyor.
The surface treatment apparatus according to claim 1, wherein the plurality of protrusions are densely implanted on a front side, and a second tape-shaped member that can be attached to the hanger is formed on a back side. 4. The power supply means includes a power supply bar capable of contacting the hanger being transported in the transport direction from below and supplying power to the hanger, and being continuously connected to the hanger being transported by the conveyor. The surface treatment apparatus according to any one of claims 1 to 3, wherein the surface treatment apparatus is configured to be capable of supplying power.