JP2001089899A - Fully automatic compact surface treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensively producible fully automatic compact surface treating device with a simple constitution capable of automatically satisfactorily subjecting compact parts to surface treatment. SOLUTION: As to this fully automatic compact surface treating device, a surface treating device base is provided with a machine casing with permitted vertical movement, moreover, this machine casing is provided with a running member intermittently running by a prescribed pitch, the running member is fitted with a supporting member supporting the upper part of a jig supporting an object to be treated, and also, the surface of the base is provided with a surface treating tank in the lower position of the running member corresponding to the above pitch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic small surface treatment apparatus having a total length of about 2 to 5 m.

[0002]

2. Description of the Prior Art Conventionally, various automatic surface treatment apparatuses such as various automatic plating apparatuses have been proposed. However, all of these fully automatic surface treatment apparatuses are large-sized apparatuses.

In recent years, it has been demanded that a relatively small amount be immediately surface-treated and used for production at a factory site for producing small parts such as steel piece fittings, not at a factory dedicated to surface treatment such as plating. ,For this reason,
A small, fully automatic apparatus having a total length of about 2 to 5 m, for example, capable of easily performing surface treatment such as plating at the factory site has been required.

In this case, it is difficult to apply the configuration of the large-sized fully automatic surface treatment apparatus as it is to such a small-sized automatic apparatus.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a simple structure, can be manufactured at low cost, and can automatically and continuously treat small parts in a fully automatic small surface treatment. It is intended to provide a device.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides the following fully automatic small surface treatment apparatus. Claim 1: A machine frame is provided on a surface treatment device base so as to be vertically movable, and a traveling member that intermittently travels at a predetermined pitch is provided on the machine frame, and a jig that supports the workpiece is supported by the traveling member. A supporting member for supporting an upper portion of the base member, and a surface treatment tank disposed below the traveling member corresponding to the pitch on the base. Claim 2: The machine frame is provided with a pressing member that reciprocates at a length corresponding to the pitch, and the pressing member presses the support member to advance the supporting member by the pitch, and integrally with the traveling member. 2. The fully automatic small-sized surface treatment device according to claim 1, wherein the device is driven for the pitch. In another aspect, the surface treatment apparatus includes a treatment tank for performing a surface treatment by energization, and an upper part of the jig is held above the treatment tank while at least the object to be treated is being treated in the treatment tank. 3. A fully automatic apparatus according to claim 1 or 2, wherein a pair of busbar members are provided on the machine frame while the jig is energized and at least the jig is released and separated from each other while the support member moves by the pitch. Small surface treatment equipment. In another aspect, the surface treatment apparatus includes a processing tank that performs processing that is shorter than the processing time of the other processing tank, and the processing tank is always disposed at a position lower than the other processing tank, and the processing tank is provided after a predetermined time. 4. The fully automatic small-sized surface treatment apparatus according to claim 1, wherein the apparatus is configured to rise to the same height as the other treatment tank. In another preferred embodiment, the surface treatment apparatus is an electrogalvanizing apparatus including an electrogalvanizing bath, a chromate bath, and a drying chamber. In a preferred embodiment, the surface treatment apparatus is a painting apparatus including a surface treatment tank for painting such as electrodeposition coating, dip painting, spray painting, and a drying chamber, and a fully automatic small surface treatment according to any one of claims 1 to 5. apparatus. [7] The fully automatic small-sized surface treatment apparatus according to any one of [1] to [6], wherein the total length is 2 to 5 m.

The apparatus of the present invention is suitable as a fully automatic apparatus having a total length of about 2 to 5 m. The object to be processed is conveyed while repeating an operation of descending, ascending, advancing for the above pitch, and descending. Since the processing is performed, the transport operation is easy, and therefore, the configuration of the apparatus is simplified and the apparatus can be manufactured at low cost.

According to the second aspect of the present invention, the running mechanism of a running member, typically a chain, is simplified and no running means for a running member (such as a chain) such as a motor is required. Therefore, the apparatus can be manufactured at low cost.

Further, according to the third aspect of the present invention, since the cathode busbar does not need to be bridged over the processing tank, the busbar is less likely to be contaminated with the processing solution, and the energization is reliably performed. Since it is unlikely to occur, a current-carrying surface treatment such as electroplating is reliably performed, and good treatment is performed.

According to the structure of the fourth aspect, it is possible to perform a good treatment adapted to a short-time surface treatment such as a chromate treatment.

The fully automatic small-sized surface treatment apparatus of the present invention is used for various kinds of surface treatments such as various kinds of electroplating, electroless plating, electrodeposition coating, dip coating, spray coating, anodizing treatment and chemical conversion treatment. Plating is performed a plurality of times, including the operation of raising the object and then moving it one pitch, and therefore, even under the condition of being exposed to air during plating, surface oxidation does not occur immediately, and current is not applied. Fully automatic equipment for electrogalvanizing, as it is suitable for electrogalvanizing that gives a film with high adhesion and hardly causes any trouble even if it is interrupted, and can effectively cope with short-time chromate treatment as described above. It is suitable as.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the apparatus of the present invention. This device 1 includes a base 2. The base 2 is provided with a machine frame 3 that moves up and down by a driving device (not shown).

A processing tank 4 is mounted on the base 2. This processing tank 4 is provided in the mode shown in FIG. Here, in FIG. 3, A is a rack mounting position, B is an alkaline degreasing tank, C is a washing tank, D is an alkaline degreasing tank, and E
Is a washing tank, F is a galvanizing tank, G and H are washing tanks, I is a nitric acid activating tank, J is a washing tank, K is a chromate treatment tank, and L and M.
Is a washing tank, N and O are air drying tanks, P is a drying room, and Q is a rack removal position.

Here, tanks other than the galvanizing tank F have a width of 2 mm.
It is formed in a size of about 00 mm × depth 120 mm × depth 300 mm.
It is formed in a size that is connected by individual pieces. The rack mounting position A has the same space as the tanks other than the galvanizing tank F, and the drying chamber P has a space in which these spaces are connected by seven.

The overall size of the apparatus 1 is about 2.6 m in length × 0.8 m in width × 1.7 m in height.

The present invention is, of course, not limited to this. The type of plating, the plating step, and the like can be changed as appropriate, and the size of the plating tank can be changed according to the required film thickness. Has a length of 2 to 2
About 5 m × width 0.5 to 2 m, particularly length 2 to 4 m × width 0.
It is suitably used for those having a thickness of about 5 to 1.5 m.

In the above-described apparatus, the jig 10 for supporting the object to be plated is, as shown in FIG.
It is formed of a metal wire such as a copper wire, and has a clamped portion 11 formed at an upper portion, and a plated object support portion 12 for suspending a plated object is formed at a lower portion. In this case, the clamped portion 11,
An insulating coat film 13 made of plastisol or the like is applied to portions other than the plating object support portion 12, and only the sandwiched portion 11 and the plating object support portion 12 are formed to be conductive. The jig 10 is formed so as to be able to suspend four objects to be plated, but is not limited to this.
The mode of supporting the object to be plated is not limited to the mode of suspension, and may be appropriately selected according to the shape of the object to be plated.

In the illustrated apparatus, the jig 10 is detachably held by a holding member (support member) 20 shown in FIG. The holding member 20 includes a pair of holding plates 21 and
2 are connected via a spring 23, and the lower ends of the holding plates 21 and 22 are always in strong contact with each other by the urging force of the spring 23, and the upper ends are separated from each other. When the upper ends of the holding plates 21 and 22 are pressed so as to approach each other against the urging force of the spring 23, the holding plates 2
The lower end portions of the jig 10 are firmly held between the lower ends of the holding plates 21 and 22 of the holding member 20. I have.

In the apparatus 1, an endless chain (running member) 30, which is located above the processing tank 4 and supported so as to be able to travel with respect to the machine frame 3, is wound around the machine frame 3 in the circumferential direction. The holding plate 21 of the holding member 20 is fixed to the chain 30.
Is designed to travel integrally with the travel of the chain 30. In the figure, reference numeral 31 denotes a sprocket.

Here, as shown in FIG. 6, a cylinder 40 is disposed on the machine frame 3 and a pressing member is attached to the tip of a piston 41 reciprocally mounted on the cylinder 40. 42 are attached. Note that the piston 41 is provided along the length direction of the device 1,
The lower portion 43 of the pressing member 42 has a front portion (chain 3
(The traveling direction of 0). When the machine frame 3 is at the upper limit position, the piston 41 is moved forward by a predetermined distance (for the length of each tank, for example, the length from the first alkaline degreasing tank B to the next washing tank C). ) When advanced, the lower part of the pressing member 42 presses the upper part of the holding member 20 attached to the chain 30 forward, thereby moving the holding member 20 toward the front tank by one. The chain 30 runs intermittently.

Further, as described above, the pressing member 42 presses the one holding member 20 forward to make one pitch (for the length of each tank, for example, the length from the first alkaline degreasing tank B to the next washing tank C). After the advance, the piston 41 retreats and retreats into the cylinder 40. In this case, the pressing member 42
The lower portion of the pressing member 42 abuts against the other holding member 20 behind the one holding member 20. At this time, the lower portion of the pressing member 42 is bent forward, and the bent portion is the upper end surface of the holding member 20. The pressing member 42 smoothly retracts to the rear position of the other holding member 20 without pressing the other holding member 20 backward, and the other The holding member 20 can be pressed forward.

Accordingly, in the apparatus 1 of the present embodiment, as described above, the machine frame 3 moves up and down, and the chain 30 movably attached to the machine frame 3 is integrated with the machine frame 3 up and down movement. Holding member 20 fixed to the member and the holding member 20
The jig 10 held by the jig moves up and down, and the jig 10 is lifted up from a tank such as the plating tank F and positioned above the ascending limit position of the machine frame 3. The jig 10 is located in a tank such as the plating tank F, and when the machine frame 3 is at the ascending limit position, the piston 41 and the pushing member 42 integrally advance with the piston 41 to advance forward. As described above, the holding member 20 and the jig 10 are integrally moved with the holding member 20 by one pitch. The vertical movement of the machine frame 3 and the reciprocation of the piston 41 are performed at predetermined time intervals by a timer.

Accordingly, the holding member 20 and the jig 10 held by the holding member 20 are lowered by the lowering of the machine frame 3 at predetermined time intervals, and are subjected to predetermined processing in a tank such as the plating tank F. When the machine frame 3 rises, the piston 41 moves forward by one pitch, and then moves forward by one pitch. At this position, it descends and rises in the same manner as described above, and then moves forward by one pitch. The jig 10 is conveyed by repetition to process the object to be plated. This operation is the same in the plating tank F and the drying chamber P in which eight tanks are continuous. In F, the object to be plated supported by the jig 10 is:
Rather than moving in this long plating tank F from one end to the other end while being immersed in the plating solution, as described above, it repeats up and down movement by one pitch, and is immersed in the plating solution, Next, it is lifted up and moved while repeating the operation of being immersed again in the plating solution.

When plating is performed by the apparatus 1, the object to be plated is supported by a jig 10, and the jig 10 is held by a holding member 20 at a rack mounting position A. Lowering and raising the frame 3, holding member 2
The process is automatically performed by repeating the forward movement of 0 for one pitch by a timer at predetermined time intervals.

That is, as shown in FIG. 3, after alkali degreasing B, water washing C, alkali degreasing D, and water washing E are sequentially performed, the wafer is moved to a galvanizing tank F and zinc plating is performed.

Here, the jig 10 is the first of the galvanizing tank F.
As shown in FIG. 7, in a state of being located above the tank portion F1 or in a state where the object to be plated is immersed in the plating solution at the descent position at this position and at the descent limit position, as shown in FIG. The jig 10 is held between a pair of busbar members 50 and 51 having substantially the same length. That is, the busbar members 50 and 51 are respectively attached to the machine frame 3. One busbar member 50 is fixed to the machine frame 3, and the other busbar member 51 is connected to a drive mechanism (not shown). The bus bar member 50 is provided so as to be able to contact and separate from one bus bar member 50 at all times.
51 are separated by a predetermined distance, but when the object to be plated is moved to the above-mentioned ascending limit position and stopped, or when immersed in the plating solution, the other bus bar member 51 comes close to the one bus bar member 50. The upper portion of the jig 10 is sandwiched between the bus bar members 50 and 51. Here, the inside of at least one of the busbar members 50 and 51 is formed of a metal 52 such as copper and is connected to the negative pole of a DC power supply (not shown).
Is sandwiched between the busbar members 50 and 51 to apply negative electricity to the object to be plated through the jig 10 and to be disposed in the electrogalvanizing tank F. Electricity flows between an anode such as a zinc plate and the like, and electrogalvanization is performed. The pinching of the jig 10 by the bus bar members 50 and 51 is eliminated by separating the other bus bar member 51 from the one bus bar member 50 at least when the jig 10 advances by one step. Accordingly, the movement of the jig 10 and therefore the holding member 20 is not hindered, and the movement is performed smoothly.

As described above, the bus bar members 50 and 51 are provided above the plating tank F, and the bus bar members 50 and 51 are provided.
By energizing while holding the jig 10, compared to a method in which a bus bar is bridged over a plating tank as usual,
There is little contamination by the plating solution, cleaning work can be omitted, and the loading and unloading can be carried while holding the jig 10 on the holding member 20 at all times, and there is no danger of poor current supply.

After the above-mentioned galvanizing F, two washings G, H
After that, it is moved to the nitric acid activating tank I around the corner portion 5 and the activation treatment is performed with a nitric acid aqueous solution. Since the corner portion 5 has a space for two pitches, two washing tanks can be provided here to perform washing.

Next, after activating nitric acid, the solution is passed through a washing tank J,
After moving to the chromate treatment tank K, the zinc plating film is subjected to chromate treatment. In this case, the base 2 is provided with a notch corresponding to the position of the chromate treatment tank K, and a cylinder 60 is provided below the notch.
A tip of a piston 61 reciprocally (up and down) provided in the cylinder 60 penetrates the notch and supports the chromate treatment tank K so as to be able to move up and down. Thus, the chromate treatment time can be adjusted.

That is, the treatment time (immersion time) for the above-described alkali degreasing, water washing and the like can be usually about 1 minute (the total zinc plating time is about 8 minutes), but the chromate treatment is 10 to 30 seconds. Usually, about 1 minute is too long. Therefore, when the object to be plated reaches the upper part of the chromate treatment tank K and then descends, the piston 61 is retracted into the cylinder 60 and the other chromate treatment tank K is arranged in order to avoid immersion in the chromate solution immediately. After a predetermined time, the piston 61 is raised, and the chromate treatment tank K is moved up together with the piston 61 so as to be positioned at the same height as the arrangement position of the other tanks. To perform a chromate treatment. Then, when the machine frame 3 is raised, the piston 61 is lowered to return the chromate treatment tank K to the initial lower position, whereby proper chromate treatment is performed.

Then, washing L and M and air drying N and O are performed.
Here, in the air-dried N, O step, an empty tank is provided.
Furthermore, after air drying N and O, it is dried in the drying chamber P. In this case, the drying chamber P is provided with a slit at the center of the upper end through which the upper part of the jig 10 can pass, and is separated by a housing 80 having an entrance window and an exit window, and the inside is heated by hot air. For example, it is heated to 60 to 90 ° C. and dried. A curtain is provided at the entrance window and the exit window, and the jig 10 and the object to be plated enter and exit the drying chamber P so as to separate these curtains.

At the rack removal position Q, as shown in FIG. The holding member 70 has a cylinder 71 on which a tip pressing body 73 of a piston 72 provided reciprocally along the width direction of the apparatus 1 is attached, and the jig 10 reaches the rack removal position Q. Then, the piston 72 retreats into the cylinder 71, and the pressing body 73 moves integrally therewith, and the pressing body 7
3 presses the upper portion of the other holding plate 22 of the holding member 20 in the direction of the one holding plate 21 so as to be close to the holding plate 21, whereby the lower ends of the holding plates 21 and 22 are separated and the jig 10 is separated.
Is released, and the jig 10 is moved to the holding member 20.
Is removed from the The detached jig 10 is hooked on a guide wire (not shown) provided immediately below the drop position, and is guided to the object-to-be-plated removal position.

Therefore, according to the above-described apparatus, the object to be plated can be satisfactorily subjected to fully automatic electrogalvanizing, chromate treatment, and drying.

The present invention is not limited to electrogalvanizing, but can be applied to other surface treatments such as plating, such as other electroplating and electroless plating, painting, anodic oxidation, and chemical conversion. In addition to the plating treatment, it is suitably used for coating treatment by immersion, electrodeposition coating treatment, spray coating treatment and the like. In this case, the coating process can be a process of degreasing → surface activity → coating → drying, and can be an apparatus having a total length of 1 to 2.5 m and a width of about 0.7 to 1.5 m.

[0035]

The fully automatic small-sized surface treatment apparatus of the present invention has a simple structure and can be manufactured at low cost, and can automatically and properly treat small parts.

[Brief description of the drawings]

FIG. 1 is a front view showing one embodiment of the present invention.

FIG. 2 is a right side view of the same example.

FIG. 3 is a plan view showing a tank arrangement of the same example.

FIG. 4 is a perspective view showing an example of a jig used in the example.

FIG. 5 is a side view of a holding member (supporting member) used in the same example.

FIG. 6 is a front view of a pressing member used in the example.

FIG. 7 is a side view of a bus bar member used in the same example.

FIG. 8 is a side view of a canceling member used in the example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plating apparatus 2 Base 3 Machine frame 4 Processing tank 10 Jig 20 Nipping member (supporting member) 30 Chain (running member) 42 Pressing member 50, 51 Bus bar member 60 Cylinder 61 Piston 70 Nipping releasing member

Claims (7)

[Claims] An apparatus frame is provided on a base of a surface treatment apparatus so as to be vertically movable, and a traveling member that intermittently travels at a predetermined pitch is provided on the machine frame, and the traveling member supports a workpiece to be processed. A small-sized automatic surface treatment apparatus, comprising: a support member for supporting an upper portion of a tool; and a surface treatment tank disposed on the base below the traveling member corresponding to the pitch. 2. A pressing member reciprocating at a length corresponding to the pitch is provided on the machine frame, and the supporting member is pressed by the pressing member to advance the supporting member by the pitch, and the traveling is integrally performed with the pressing member. 2. The fully automatic small surface treatment apparatus according to claim 1, wherein the member is caused to travel by the pitch. 3. A surface treatment apparatus includes a treatment tank for performing a surface treatment by energization, and holds an upper portion of the jig above the treatment tank while at least the object to be treated is being treated in the treatment tank. 3. The apparatus frame according to claim 1, further comprising: a pair of busbar members that are separated from each other while the holding of the jig is canceled while the support member moves by the pitch while the jig is energized. Automatic small surface treatment equipment. 4. A surface treatment apparatus includes a treatment tank for performing a treatment shorter than a treatment time by another treatment tank, and the treatment tank is always disposed at a position lower than the other treatment tank, and after a predetermined time, the treatment tank is disposed. 4. The fully automatic small-sized surface treatment apparatus according to claim 1, wherein the tank is raised to the same height as the other processing tanks. 5. The fully automatic small surface treatment apparatus according to claim 1, wherein the surface treatment apparatus is an electrogalvanizing apparatus including an electrogalvanizing tank, a chromate tank, and a drying chamber. 6. The fully automatic small-sized surface according to claim 1, wherein the surface treatment device is a painting device including a surface treatment tank for painting such as electrodeposition coating, dip painting, spray painting and a drying chamber. Processing equipment. 7. The fully automatic small-sized surface treatment apparatus according to claim 1, wherein the total length is 2 to 5 m.