JPH09316695A - Transporting device and surface treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transporting device of works with which the continuous supply of the works to the transporting device and the continuous detachment of the works from the transporting device are easy. SOLUTION: A pair of endless chains 2 and 2 which are travelable at a uniform speed by maintaining a parallel state are connected to each other by connecting rods 3,... aligned at prescribed pitch intervals. Holding means 5, 5,... for the works W are fixed to the respective connecting rods. The works are held and transported between the holding means adjacent to each other. The works W are received and held between the adjacent holding means in an area where the chains 2 change from curvilinear traveling to approximately rectilinear traveling. The works are released in an area where the chains change from the rectilinear traveling to the curvilinear traveling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device for an object to be processed and a surface treatment apparatus using the transfer device.

[0002]

2. Description of the Related Art As a surface treatment apparatus, an apparatus for performing processing such as cleaning treatment, plating treatment, anticorrosion treatment, coating treatment, vapor deposition treatment, heat treatment and the like for metal materials and the like can be mentioned as a typical one. In such a surface treatment apparatus, for example, an apparatus for continuously electroplating a large number of objects to be processed as a processing apparatus that conveys objects to be processed and performs processing is , Attach a number of jigs with hanging hooks to the endless chain at appropriate intervals in a suspended state, hook the object to be processed on this jig and hang it, and place the object in the movement range of the jig that moves by the endless chain. There is known an apparatus for plating the surface of an object to be processed by passing it through a provided plating bath.

However, the continuous transfer device for the object to be processed used in such a conventional apparatus is composed of a continuous supply device for the object transfer device and a continuous device for separating the object from the transfer device. However, there is a drawback in that the entire apparatus becomes large in size, a large installation space is required, and the structure of these continuous supply / separation devices becomes complicated and expensive. In order to avoid these points, it is necessary to place manpower at the beginning and end of the transporting device, supply the workpiece to the jig, and detach the processed workpiece from the jig, which takes time and effort. There was a flaw. In addition, depending on the shape of the object to be processed, there are some objects that cannot be hung on the hook. In that case, the jig has a complicated shape, and there is a drawback that mounting and demounting of the object to be processed is more troublesome.

[0004]

SUMMARY OF THE INVENTION A first object of the present invention is to provide a transfer device for a processing object and a transfer device for the processing object, which facilitates continuous supply to and removal of the processing object from the transfer device. Disclosed is a surface treatment device having the same.

A second object of the present invention is to provide an apparatus for conveying an object to be treated which has a simple structure, requires a small installation space, is inexpensive and has a high durability, and a surface treatment apparatus for an object to be treated which has the apparatus. Is to disclose.

[0006]

The first gist of the present invention is that an endless transmission member wound around a winding transmission device is fixedly provided with a means for holding an object to be conveyed at a predetermined pitch interval. In the area where the power transmission body changes from the curved running to the substantially linear running, the transferred article receives and holds the conveyed object between the mutually adjacent holding means, and in the changing area from the straight running to the curved running, A transport device configured to discharge a transport object.

In the conveying device according to the first aspect, the winding transmission device is a chain and a sprocket, the belt and a pulley, and the belt is preferably a toothed belt because it does not slip. The clamping means is selected to have an appropriate shape depending on the shape and weight of the transported object, and the clamping means has, at one end thereof, a loop-shaped chain, belt, rope, etc., as an endless power transmission member, The objects to be transported are fixed at a predetermined pitch interval according to the shape of the transported object, either directly or through an appropriate fixing member. Therefore, in the change range in which the endless transmission member changes its direction from the curved running to the substantially straight running, the distance between the sandwiching means adjacent to each other changes from the open state to the closing direction, and at that time, The transported object is received and clamped between the clamping means.

Therefore, it is preferable that a spring member that expands and contracts in the pressing direction is provided in the holding means in order to adjust and buffer the force with which the holding means presses the object to be conveyed from both sides, and the holding means sandwiches the spring member. . A lightweight object can be sufficiently held and conveyed by pressing force from both left and right sides. However, in the case of a heavy object, for example, an L-shaped portion is provided on at least one side of the holding means to support the heavy object. Is desirable.

In this way, the object to be conveyed, which is conveyed while being sandwiched by the sandwiching means attached to the endless power transmission member that travels in a substantially straight line, in the change region from the straight line to the curved line, The nipping means are spaced apart from each other, and the transported object is discharged. Therefore, in most cases, the desorption device for the transported object is unnecessary. The curved traveling area of the endless power transmission member may be provided in the contact area with the sprocket or the pulley, but it may be bent by a bending chain guide or the like to form the change area.

As a device for supplying an object to be conveyed to the conveying device according to the first aspect, an object to be conveyed is an electromagnet, a vacuum suction device, or the like provided at the tip of a reciprocating rod such as a rotating arm by a step motor or an air cylinder. An example is a device that supplies the time between the clamping means.

A second gist of the present invention is to connect a pair of endless transmission members that can run at a constant speed while maintaining a parallel state, by connecting a plurality of connecting rods arranged at a predetermined pitch interval. In each of the above, the object to be transferred is fixed, and the object to be transferred is clamped by the pinching means provided on the connecting rods adjacent to each other to be transferred.
In the change area from the curved running to the substantially straight running, the transferred object is received and pinched between the adjacent holding means, and the transferred object is discharged in the changed area from the straight running to the curved running. The transport device is characterized in that it is configured.

Since the conveying device according to the second aspect has a structure in which the connecting rod is provided with the sandwiching means, the posture of the sandwiching means is stable, and one connecting rod is provided with a plurality of sandwiching means as necessary. And at the same time, a plurality of objects to be conveyed can be conveyed. Further, the endless power transmission member is not limited to a pair, and three or more endless transmission members may be provided. Other functions and effects are almost the same as those of the carrier device according to the first aspect.

A third gist of the present invention is that endless power transmission members wound around a winding power transmission device are fixedly provided with a means for holding an object to be processed at a predetermined pitch interval and are adjacent to each other. A surface treatment processing chamber is provided so as to surround a moving area of the object to be processed which is clamped and conveyed by the clamping means. The surface treatment apparatus is characterized in that it is configured to receive and pinch a treatment object, and to release the treatment object in a change region from linear traveling to curved traveling.

The apparatus according to the third aspect is a surface treatment apparatus having the transport apparatus defined in the first aspect as a means for transporting an object to be processed. This is the same as the case of the transport device.
The main point of the surface treatment apparatus is to introduce the object to be processed into the processing tank while the object is being moved by the transport means and to subject the object to a predetermined treatment. Since the conveying means uses the variation in the distance between the sandwiching means due to the change in the angle of the endless power transmission body as the sandwiching force, it is not suitable for the treatment in which a large impact force acts on the workpiece.

Generally, treatment with fluid, magnetism, light, heat or the like is suitable, and for example, surface treatment such as plating treatment, chemical treatment, gas treatment, cleaning treatment, coating treatment, vapor deposition treatment, magnetization treatment, heat treatment and the like. Is suitable. These are achieved by allowing the object to be processed to pass through a processing tank which is provided so as to surround the moving area of the object to be processed which is conveyed by the holding means. The shape of the processing tank differs depending on the processing medium, but since it is necessary to provide openings for entrance and exit of the object to be processed and the sandwiching means,
If necessary, a means for collecting the processing medium flowing out or leaking from the opening is provided.

A fourth gist of the present invention is to connect a pair of endless transmission members that can run at a constant speed while maintaining a parallel state by a plurality of connecting rods arranged at a predetermined pitch interval, and the connecting rods. In each of the above, a holding means for holding an object to be processed is fixed, and a surface treatment chamber is surrounded by a moving area of the object to be processed which is held and conveyed by the holding means provided on the connecting rods adjacent to each other. The endless power transmission body is provided and receives and clamps the object to be processed in the changing area from the curved running to the substantially straight running, and the object to be processed is received in the changing area from the straight running to the curved running. The surface treatment apparatus is characterized in that the surface treatment apparatus is configured to emit.

This is a surface treating apparatus having the conveying apparatus according to the second aspect as a means for conveying an object to be treated, and the structure of the surface treating apparatus is the same as that of the apparatus according to the third aspect.

A fifth aspect of the present invention embodies the present invention as a plating apparatus as an example of the surface treatment apparatus according to the fourth aspect. The structure is such that a pair of chains that can run in parallel and at a uniform speed are connected by a plurality of connecting rods, and a holding means for holding an object to be processed is fixed to each of the connecting rods. Surrounding the linear movement area of the object to be sandwiched and conveyed by the sandwiching means, at least a pretreatment tank of the object to be treated, a plating bath and a post-treatment tank are provided, and the plating bath is
An inner tank overflowing with the plating solution and an outer tank surrounding the inner tank are provided, and the bottom of the outer tank communicates with the plating solution storage tank below the outer tank, and the plating solution storage tank and the The inner tank communicates with a liquid feed pump, the linear movement range of the object to be processed passes through an opening provided in the side wall of the inner tank and the outer tank, and the pair of chains is It is configured to receive and pinch an object to be processed in a changing area from a curved running to a substantially straight running, and to release the object to be processed in a changing area from a straight running to a curved running. It is in a plating device characterized by.

As the plating process, chemical vapor deposition, hot dip plating and the like belong to a broad sense, but as the plating apparatus according to the fifth aspect, an electroplating apparatus and an electroless plating (chemical plating) apparatus are mainly used. is there. The pretreatment bath includes a treatment bath for cleaning the surface of the object to be treated, washing with water, acid immersion treatment, and the like. As the post-treatment tank, there is a washing treatment tank for drying the object to be treated, a drying treatment tank, or a separation treatment tank for removing the deposits adhering to the sandwiching means. The means for transporting the object to be processed and the effects thereof are no different from those of the device according to the fourth aspect.

A sixth aspect of the present invention is the plating apparatus defined in the above fifth aspect, wherein the holding means is made of an electric conductor and can be electrically connected to a cathode feeding bar provided in the vicinity of the plating bath. In the inner tank of the bath, anodes are built in on both sides of the moving area of the object to be processed, and the post-processing tank at least includes the cleaning tank, the drying chamber, and the peeling processing tank of the sandwiching means. Along the direction, in this order, between the drying chamber and the peeling treatment tank, a change region from straight running of the chain to curved running is provided to discharge the object to be processed. The electroplating device is characterized by the fact that

With such a structure, the object to be processed is subjected to electroplating, then washed and dried, and then dropped and released from the sandwiching means. After being energized in the opposite direction to the case of the plating bath to remove the deposited deposits on the surface, it is subjected to a washing treatment or the like and inverted. The setting of the change area for discharging the object to be processed does not necessarily need to cause the chain or the like to reversely run, and it is sufficient if the interval required for dropping and discharging the object to be processed occurs between the holding means.

[0022]

1 to 7 show an embodiment of a continuous electroplating apparatus as a surface treatment apparatus including one embodiment of the present invention conveying apparatus as a means for conveying an object to be treated. The apparatus of the present application is, in FIG.
And a surface treatment chamber T provided in a moving area of the workpiece W to be transported by the transport device H.

The transfer device H is provided with a pair of rotating shafts 1 and 1 which are parallel to each other near the left and right ends of the upper part of the continuous plating device by a frame (not shown). , One pair each, sprocket 1
a, 1a, 1b, and 1b are provided so as to rotate integrally with the rotary shaft 1. These sprockets 1a, 1a
Between 1 and 1b and 1b are endless roller chains 2 and 2 made of a corrosion resistant metal material (for example, stainless steel).
Is wrapped around. A sprocket 1c driven by a motor M is fixedly mounted on a rotary shaft that supports the sprocket 1b.

With such a structure, of the pair of pin chains of the pair of roller chains 2 and 2 which can move synchronously in the same direction at the same speed, the pin link 2 on the side facing each other.
As shown in FIG. 3, attachment pieces 2c, 2c, ... Are extended from a, 2a ,. The mounting pieces 2c, 2 which are in a position facing each other
Connection rods 3, 3, ... Made of a material having conductivity and corrosion resistance (for example, stainless steel) are fixed by screws at both ends between c.

In this way, a large number of connecting rods 3, 3, ... Are supported by the chains 2, 2 at a pitch equal to the pitch interval of the pin links 2a of the roller chain 2. A pair of holding means 5 and 5 for holding the workpiece W are fixed to each of the connecting rods 3, 3 ,. The holding means 5 is also made of a material having corrosion resistance and conductivity. The holding means 5 is a male screw portion 5a provided on the base side and is screwed into the screw hole of the connecting rod 3, and the arm 5b provided on the tip side has a holding piece 6a and a receiving piece 6b with the arm interposed therebetween. Is provided.

The pressing piece 6a and the receiving piece 6b are the objects to be processed W.
Since the most suitable one is selected according to the shape of, the lower end 5d of the arm 5b is provided on the base end side as shown in FIG. It is fitted in the fitting hole 5c, and the union nut 5e allows the base end side and the arm side to be detachable. Of course, instead of the detachable structure, the clamping means may be integrally configured and the male screw portion 5a may be used to replace the entire clamping means.

The pressing piece 6a is an elastic strip made of the same material as that of the arm. In FIG. 5, the upper end is the arm 5b.
It is integrally secured by brazing or the like while ensuring conductivity. The lower end is inclined toward the adjacent arm and then bent toward the adjacent arm, and the bent end 6c has a bent portion ( Or V-shaped notch). On the other hand, the receiving piece 6b is
Bending end 6 of presser piece 6a provided on the adjacent arm
Similarly, at a position facing c, it is composed of a U-shaped piece secured to ensure electrical conductivity, and in order to abut the edge of the plate-shaped object W to be processed, the upper and lower end portions of the adjacent arm are clamped. A V-shaped notch is formed in the bent portion 6d that bends toward one side.

On each of the connecting rods 3 each having a rectangular cross section, a contact piece 3a made of a conductive material and bent into a substantially V shape is fixed to the surface opposite to the surface on which the holding means 5 is provided. It is set up. When the contact pieces 3a, ... Move along with the movement of the roller chain 2, they come into contact with the power supply bar 4 provided at a necessary position in the moving area, and the holding piece 6a and the receiving piece 6b provided at the tip of the holding means. Supply power to. Of course,
The connecting rod may be made of a non-conductive material, and the contact piece and the sandwiching means may be directly connected by a conductive material.

In the conveying means H for the object to be treated having such a structure, the tension side of the roller chain 2 in FIG.
It moves from the sprocket 1a side to the sprocket 1b side. The tension side of the roller chain is horizontally supported on the guide while being supported by a chain guide (not shown). The tension side chain has a slightly changed running state region formed by the turning sprockets 1c and 1d just before the drive sprocket 1b. In the change zone, the chain goes through a slight ascending process and then proceeds in the horizontal state again, and then reaches the drive sprocket.

When the chains 2 and 2 rotate while making contact with the sprocket 1a, the sandwiching means 5, 5, ...
The interval between them becomes maximum, and each holding means moves in a state of extending in the radial direction from the rotation center of the sprocket 1a. Then, when the chain 2 shifts from the curved traveling to the horizontal traveling, the interval between the sandwiching means adjacent to each other rapidly narrows and finally becomes a parallel body. Shortly before that, the workpiece W is supplied between the sandwiching means by the workpiece supply device R (see FIG. 2), and the plate-shaped workpiece W is obtained.
Is the elasticity of the pressing pieces 6a of the adjacent clamping means and the receiving pieces 6b.
With, the left and right edges are sandwiched by the V-shaped notches and horizontally transported.

The object-to-be-processed supply device R is provided with, for example, a plurality of vacuum suction hands to which the object to be processed can be attached and detached in a radial manner, and these are rotated by a step motor or the like in accordance with the moving speed of the chain. It may be supplied between the clamping means.

While passing through a surface treatment chamber T, which will be described later, the object to be treated travels in a straight line after being subjected to a predetermined treatment, and at the stage where the final treatment is finished, it is leveled by the turning sprockets 1c and 1d. The direction is changed from traveling to obliquely ascending traveling, and in the area where the traveling state is changed, the distance between the sandwiching means 5 and 5 adjacent to each other is increased, and the workpiece W is shot by the chute S.
To fall. Then, the chain 2 returns to horizontal traveling again, and only the holding means undergoes the post-treatment described below,
When it reaches the drive sprocket 1b, it reverses and runs horizontally to the left, and then returns to the sprocket 1a.

Surrounding the moving range of the object W to be treated,
A series of plating treatment tanks serving as a surface treatment chamber T are provided. As shown in FIG. 2, the plating tank is a degreasing tank 11, a cleaning tank 12, an etching tank 1 from the side close to the sprocket 1a toward the drive sprocket 1b.
3, a pretreatment bath such as the washing bath 14, a plating bath 15, a posttreatment bath such as a washing bath 16 and a drying chamber 17 are provided in a row, and after passing through the chute S, a peeling treatment bath 18 and a washing bath 19 And a post-treatment tank provided so as to surround the traveling area of the sandwiching means 5.

As shown in FIGS. 1 and 6, each processing tank 11, 15, 18 and the like comprises an upper processing tank 20, 20, 20 and a lower storage tank 31, 31, 31, and the upper processing tank 20.
Is composed of an inner tank 21 and an outer tank 22, both of which are provided with a passage opening 23 for holding means. The bottom of the inner tank 21 and the bottom of the lower storage tank 31 communicate with each other through a treatment liquid supply pipe 32 having a liquid supply pump P interposed therebetween, and further, the bottom of the outer tank 22 and the storage tank 3 are connected.
The return liquid pipe 33 communicates with 1. The processing solution is
It is supplied to the inner tank 21 by the pump P, and the openings 23, 23
Then, it overflows from the overflow ports 24, 24 in the upper part of the inner tank, falls into the outer tank, passes through the return liquid pipe 33, returns to the storage tank, and circulates again.

The opening areas of the passage openings 23, 23 can be adjusted by the sliding door-like opening / closing means 25, 25. For example, in the plating bath, the passage opening area can be enlarged as necessary to supply the plating solution at a higher speed. 26, ... are fixing screws provided on the support guide wall of the opening / closing means 25. Reference numerals 27 and 27 denote anodes, and the object to be treated as the cathode passes through the center between the anodes. Above the plating bath 15, the cathode feeding bar 4 is provided with the contact piece 3a attached to the connecting rod 3 (see FIG. 4).
The anode power supply bar 4a is provided above the stripping treatment tank 18 as well. In the stripping bath, reverse the polarity from the plating bath,
The deposit accumulated on the sandwiching means is electrolytically removed to restore the sandwiching means.

The object to be treated is subjected to a surface cleaning treatment in a pretreatment tank, plated, washed with water and dried, and then automatically discharged in a traveling change area by a turning sprocket.
Depending on the case, forced desorption recovery may be performed by an appropriate recovery desorption device. In the plating apparatus, since the peeling regeneration processing of the sandwiching means is required as the post-processing, the traveling change area by the turning sprocket is provided, but in the other processing apparatus, the object to be processed is discharged in the driving sprocket 1b. You can do this.

[0037]

EFFECT OF THE INVENTION The apparatus of the present application makes it easy to supply the object to be processed to the conveying device and to separate and collect the object regardless of the shape of the object to be processed, and to manufacture the entire device simply and at low cost. it can. Further, since the object to be processed is nipped and conveyed, the posture is stable and uneven processing does not occur.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a main part of an embodiment of the present invention.

FIG. 2 is an explanatory view of the device of FIG. 1 seen from a plane direction.

FIG. 3 is an explanatory view showing a coupled state of a chain and a connecting rod in the device of FIG.

4 is a partially omitted cross-sectional explanatory view as seen from the AA cross-sectional direction of FIG.

FIG. 5 is an explanatory diagram showing a detailed configuration of a sandwiching unit.

FIG. 6 is an explanatory diagram showing a change in the interval of the sandwiching means in the travel change area.

FIG. 7 is an explanatory view showing the structure of the inner tank of the plating bath.

[Explanation of symbols]

 H Transfer device T Surface treatment chamber W Object to be processed P Pump M Motor 1a, b Sprocket 1c, 1d Deflection sprocket 2 Chain 2c Attachment piece 3 Connecting rod 4 Feeding bar 5 Clamping means 20 Upper treatment tank 21 Inner tank 22 Outer tank 31 Lower storage tank 32 Treatment liquid supply pipe

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location C23G 3/00 C23G 3/00 Z C25D 19/00 C25D 19/00 A

Claims (6)

[Claims] 1. An endless power transmission member wound around a winding power transmission device is fixedly provided with a means for holding an object to be conveyed at a predetermined pitch interval. It is configured to receive and pinch the conveyed object between the clamping means that are adjacent to each other in the changing area to the straight traveling, and to release the conveyed object in the changing area from the linear traveling to the curved traveling. A transport device characterized by being 2. A pair of endless transmission ridges that can run at a constant speed while maintaining a parallel state are connected by a plurality of connecting rods arranged at a predetermined pitch, and each of the connecting rods carries an object to be conveyed. The object to be conveyed, which is fixed by the holding means and is held by the holding means provided on the connecting rods adjacent to each other and is conveyed, has the endless power transmission body changed from the curved running to the substantially straight running. In the area, the object to be conveyed is received and sandwiched between the adjacent nipping means, and the object to be conveyed is discharged in the area where the straight traveling is changed to the curved traveling. . 3. An endless transmission strip wound around a winding transmission device is fixedly provided with a holding means for holding an object to be processed at a predetermined pitch interval, and the holding means is held by the holding means adjacent to each other and conveyed. A surface treatment chamber is provided to surround the moving area of the object to be processed, and the endless power transmission body receives and clamps the object to be processed in the changing area from the curved running to the substantially linear running. A surface treatment apparatus, which is configured to discharge an object to be treated in a change region from straight traveling to curved traveling. 4. A pair of endless power transmission members that can run at a constant speed while maintaining a parallel state are connected by a plurality of connecting rods aligned at a predetermined pitch, and each of the connecting rods has an object to be processed. The surface treatment chamber is provided around the moving area of the object to be processed that is clamped and conveyed by the clamping means provided on the connecting rods adjacent to each other. The strip is configured to receive and pinch the object to be processed in the changing area from the curved running to the substantially straight running, and to release the object to be processed in the changing area from the straight running to the curved running. A surface treatment device characterized by the following. 5. A pair of chains capable of running at a constant speed in parallel are connected by a plurality of connecting rods, and a holding means for holding an object to be processed is fixed to each of the connecting rods, and the connecting rods are provided on adjacent connecting rods. Surrounding a linear movement area of the object to be processed that is sandwiched and conveyed by the sandwiching means, at least a pretreatment tank, a plating bath and a post-treatment tank for the processing object are provided, and the plating bath is An inner tank overflowing the plating solution and an outer tank surrounding the inner tank, the bottom of the outer tank and the plating solution storage tank below the outer tank are in communication with each other, and the plating solution storage tank The inner tank communicates with a liquid feed pump, and the linear movement region of the object to be processed passes through an opening provided in a side wall of the inner tank and the outer tank. However, in the change area from curved running to substantially straight running Received by sandwiching, in the change area to the curved travel from the straight running, a plating apparatus characterized by being configured to emit an object to be processed. 6. The holding means is made of an electric conductor and can be electrically connected to a cathode power supply bar provided near the plating bath.
The inner bath of the plating bath contains anodes on both sides of the moving area of the object to be treated, and the post-treatment tank includes at least the cleaning tank, the drying chamber, and the peeling treatment tank of the sandwiching means. In order to prepare for this order along the traveling direction, a change region from straight running to curved running of the chain is provided between the drying chamber and the peeling treatment tank, and the object to be processed is discharged. The plating apparatus according to claim 5, which is provided.