JPH08144082A - Surface treatment and device therefor - Google Patents

Abstract

PURPOSE: To efficiently surface-treat the cylindrical parts of a work such as the cylinder block, etc., of a V-engine provided with cylindrical parts of more than 2 having an angle difference mutually. CONSTITUTION: An electrode 34 constituting processing soln. passages 37 and 38 in a cylinder is provided to the supporting block 32 of the treating device main body 30 supporting the cylinder block 1 of a V-engine, the electrode 34 is projected on the surface of the block 32 and thrusted into each cylinder of the block 1, the processing soln. is allowed to flow in the passages 37 and 38, and the work is surface-treated. Meanwhile, a work conveyor holding the block 1 freely rotatably is provided above the main body 30, the electrode 34 is thrusted into the cylinder 1b on one side of the block 1 to surface-treat the cylinder 1b, and then the block 1 is turned to surface-treat the cylinder 1b on the other side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plating process for plating the inner peripheral surface of a cylindrical portion of a work having a cylindrical portion such as a cylinder block of an engine, and a surface applied to its pretreatment. The present invention relates to a treatment method and an apparatus therefor, and more particularly to a surface treatment method and an apparatus for performing surface treatment at high speed while flowing a treatment liquid onto a surface to be treated.

[0002]

2. Description of the Related Art Conventionally, various techniques relating to surface treatment such as plating on a surface to be treated of a work and degreasing treatment as a pre-process have been known. For example, it is generally known that a work is immersed in a tank that stores a treatment liquid to perform plating or the like, but this method requires a long treatment time and poor performance.

Therefore, in recent years, it has been considered that a treatment liquid is made to flow to the surface to be treated of a work to enhance the treatment efficiency and enable high-speed treatment. The applicant of the present application has also developed and filed a device for plating the inner peripheral surface of the cylindrical portion of the work having the cylindrical portion such as the cylinder block of the engine while flowing the treatment liquid (Patent 1994 (No. 134714). In this apparatus, a cylindrical flow path forming member is provided on the work supporting part of the processing apparatus main body so that the flow path forming member protrudes into the cylinder while the cylinder block is supported by the processing apparatus main body. There is. A predetermined surface treatment is applied to the inner wall surface of the cylinder by causing the treatment liquid to flow between the outer peripheral surface of the flow path forming member and the inner wall surface of the cylinder.

[0004]

By the way, in the above-mentioned device, when a cylindrical flow path forming member is fixedly projected on the work supporting part, the work is left and right like a cylinder block of a V-shaped engine. There is a problem that it is difficult for a cylinder formed with a predetermined angle inclination to have a structure in which the flow path forming member can be inserted into both cylinders at the same time. Therefore, in the case of a work having two or more tubular portions formed with an angle difference, such as a cylinder block of a V-shaped engine, surface treatment is performed on all the tubular portions at the same time. Difficult to apply,
Or it is impossible.

Therefore, in such a case, it is important to efficiently perform the surface treatment on each cylindrical portion in order to shorten the surface treatment work.

The present invention has been made in order to solve the above problems, and is applied to each tubular portion of a work having two or more tubular portions having an angle difference such as a cylinder block of a V-shaped engine. An object of the present invention is to provide a surface treatment method and an apparatus therefor capable of efficiently performing surface treatment.

[0007]

According to a first aspect of the present invention, there is provided a surface treatment method, wherein a treatment liquid is applied to an inner peripheral surface of the tubular portion of a work having two or more tubular portions formed with an angular difference. Is a surface treatment method for supplying a surface treatment such as plating,
The work is placed on the work supporting portion of the processing apparatus body in a state where the flow path forming member provided in the processing apparatus main body is inserted into any one of the cylindrical portions of the work, and the tube is formed by the flow path forming member. After performing the surface treatment on the tubular portion by introducing and discharging the processing liquid into the flow path configured inside the cylindrical portion, the work is removed from the processing apparatus main body and rotated to The work is placed on the work supporting part in a state where the flow path forming member is projected into the cylindrical part of the above, and the surface treatment is performed by introducing and discharging the processing liquid with respect to the cylindrical part. Is.

According to a second aspect of the present invention, there is provided a surface treatment apparatus in which a treatment liquid is supplied to the inner peripheral surface of the cylindrical portion of a work having two or more cylindrical portions formed with an angle difference to perform plating or the like. A surface treatment apparatus for performing the surface treatment of claim 1, wherein the treatment apparatus main body installed at a workpiece treatment location supports a workpiece in a state in which both side opening portions of any of the cylindrical portions face a predetermined direction. A flow path forming member that forms a flow path of the processing liquid inside the tubular portion facing the predetermined direction in a work supporting state, a processing liquid introduction passage that communicates with the processing liquid inflow side of the flow path, A treatment liquid outlet passage communicating with the treatment liquid outflow side of the flow passage is provided, and while the treatment liquid introduction passage is connected to the treatment liquid supply means, the direction of the cylindrical portion is changed above the treatment device main body. The holding mechanism that holds the above work rotatably can be moved up and down. Those digits.

The surface treatment apparatus according to claim 3 is the same as that of claim 2.
In the surface treatment apparatus described, in the above-mentioned work treatment location
A plurality of processing apparatus main bodies are provided side by side to continuously perform a predetermined surface treatment, and the holding mechanism is movably provided over these processing apparatus main bodies.

The surface treatment apparatus according to claim 4 is the surface treatment device according to claim 3.
In the surface treatment apparatus described above, the work is a cylinder block of a V-shaped engine having at least one set of cylinders as a tubular portion, the cylinder block communicating with the crankcase portion at a predetermined angle. Where
A first line in which a plurality of processing device main bodies that perform predetermined pretreatment and plating treatment on one cylinder of the cylinder block are arranged in series, and a plurality of treatment lines that perform predetermined pretreatment and plating treatment on the other cylinder A second line formed by arranging the processing device main bodies in series is provided in parallel, and the movement path of the holding mechanism is set so as to pass through the second line after all the processing in the first line is completed. .

A surface treatment apparatus according to claim 5 is the surface treatment apparatus according to claim 2.
The surface treatment apparatus according to any one of items 1 to 4, wherein a seal member that seals an upper opening portion of the cylindrical portion of the workpiece is provided above the treatment apparatus main body.

The surface treatment apparatus according to claim 6 is the same as claim 5.
The surface treating apparatus as described above, wherein the work is a cylinder block of a V-type engine having at least one set of cylinders as a tubular portion, the cylinder block communicating with the crankcase portion at a predetermined angle. Above the main body, a fixing member is provided together with the sealing member for abutting against the cylinder block and fixing the cylinder block against the work supporting portion, and this fixing member is provided with the crankshaft of the crankshaft formed on the cylinder block. A fitting portion for the bearing portion is provided.

[0013]

According to the surface treatment method of the first aspect, the work is the work of the main body of the processing apparatus with the flow path forming member provided in the main body of the processing apparatus protruding into any of the cylindrical portions formed on the work. The tubular portion is placed on the support part, and the tubular portion is surface-treated by introducing and discharging the treatment liquid into and from the fluid passage formed inside the tubular portion by the above-mentioned flow channel constituting member. After that, the work is removed from the processing apparatus main body and rotated, the above-mentioned flow path forming member is thrust into the other tubular portion of the work, and the treatment liquid is introduced and led out to the other tubular portion. Is surface-treated. In this way, the surface treatment is applied to all the cylindrical parts of the work.

According to the surface treatment apparatus of the second aspect, the work is placed on the work supporting portion of the main body of the processing apparatus with the flow path forming member protruding into any one of the cylindrical portions formed on the work. . In this state, the treatment liquid supplied from the treatment liquid supply means flows from the treatment liquid introduction passage through the flow passage inside the cylindrical portion of the work and is led out from the treatment liquid outlet passage,
Thus, the surface treatment is performed at high speed while the treatment liquid is circulated. Then, when the surface treatment on the tubular portion is completed, the holding mechanism removes the workpiece from the processing apparatus main body and rotates the workpiece, and the workpiece is supported in a state in which the flow path forming member protrudes into the other tubular portion. Placed on the department. As a result, the surface treatment is applied to the other tubular portion.

According to the surface treatment apparatus of the third aspect, the holding mechanism performs the predetermined surface treatment while the work is conveyed between the respective treatment apparatus main bodies.

According to the surface treatment apparatus of the fourth aspect, first, the surface treatment is performed on one cylinder of the cylinder block in the first line, and then the other cylinder is treated in the second line. Is applied.
At this time, when the cylinder block is on the first line, one of the cylinders is held in a state of being oriented in a predetermined direction, and when the cylinder block is transferred to the second line, the work is rotated by the holding mechanism, whereby the other The cylinder is held in a state of being oriented in a predetermined direction.

According to the surface treatment apparatus of the fifth aspect, the treatment liquid is more reliably prevented from overflowing by sealing the upper opening of the cylindrical portion of the work.

According to the surface treatment apparatus of the sixth aspect, the cylinder block is pressed against the work supporting portion in a state where the fitting portion of the fixing member is fitted to the bearing portion of the crankshaft of the cylinder block, thereby exerting a pressing force. It becomes possible to fix the cylinder block to the work supporting portion by effectively operating the cylinder block in the vertical direction.

[0019]

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

FIGS. 1 to 3 show the outline of the entire plating system as an example of application of the present invention. The work shown in the figure is a cylinder block 1 of a V-shaped engine, and in the present plating system, the inner peripheral surface of the cylinder (cylindrical portion) is plated. The type of plating is not limited in the present invention, but in the embodiment, nickel is subjected to composite plating containing silicon carbide as a dispersant and phosphorus.

In this plating system, processing sections A to D for various pretreatments, a plating section E and a drying section F are arranged in an array corresponding to the order of work. Line) and processing units A to
D, plating processing section E and drying section F are plating processing line L
A processing line Lb (second line) arranged in the reverse order of a (left and right in FIG. 1) is provided. Specifically, the degreasing processing section A, the alkali etching processing section B, the mixed acid etching processing section C, the alumite processing section D, the high-speed plating processing section E, and the drying section F are each plating processing lines La and L.
b (hereinafter abbreviated as processing lines La and Lb), respectively. Furthermore, each plating line La, Lb
In between, the processing sections A to E and the high-speed plating processing section E
Between the washing section F and the drying section F are water washing sections Ga, Gb, G, respectively.
c, Gd, and Ge are provided.

In this system, the cylinder block 1 is moved from the left side to the right side in the processing line La, is transferred to the processing line Lb, and is further moved from the right side to the left side in the processing line Lb. Predetermined processing is performed. Therefore, the work input part 2 is provided on the starting end side (left side in FIG. 1) of the processing line La, and the work unloading part 3 is provided on the end side (left side in FIG. 1) of the processing line Lb.

Outside the respective processing lines La and Lb,
Degreasing liquid storage tank 4A, alkaline liquid storage tank 4B, mixed acid liquid storage tank 4C and mixed acid drainage tank 4C ', alumite liquid storage tank 4D and plating liquid storage tank 4E
Is installed. Pumps 5A, 5B, 5C, 5D, 5E for supplying the processing liquid and pipes for supplying and discharging the processing liquid (see FIG. 1) are provided between the tanks 4A to 4E for the respective processing liquids and the corresponding processing units A to E. Through FIG. 3 are omitted).

Above the processing lines La and Lb,
Each is equipped with work transfer equipment. This work transfer equipment is, for example, a pair of parallel beams 6 erected at a predetermined height position, and a plurality of work transfers mounted so as to be movable along the beams 6 while straddling the respective beams 6. The device 7 (holding mechanism) and the transfer mechanism 8 for transferring the work transfer device 7 of the processing line La to the processing line Lb.
It consists of and.

FIG. 4 and FIG. 5 show an example of a concrete structure of the work transfer device 7.

The work transfer device 7 shown in this figure is movable along the beam 6 and is provided with a frame 9 supported by a support portion 7a connected to the main body of the device so as to be able to move up and down. 9, a pair of left and right chuck mechanisms 10A, 10
B is equipped.

The chuck mechanisms 10A and 10B include work chucks 11A and 11B, which project from both sides of the frame 9 so as to be able to move inward and backward, and both work chucks 11 respectively.
Clamping air cylinders 12A and 12B for driving A and 11B respectively are provided.
By driving A and 12B, both work chucks 11A,
With 11B, the cylinder block 1 can be held from both sides. Also, the chuck mechanism 10A,
10B is rotatably attached to the frame body 9, and is rotated by a rotation air cylinder 13 via a rack, a pinion or the like (not shown), whereby the held cylinder block 1 can be rotated by a predetermined angle. It is like this. The frame body 9 is moved up and down by a lifting air cylinder 14.

The transfer mechanism 8 is provided over the end of the processing line La and the start of the processing line Lb in the work transfer facility. Although not shown in detail, this transfer mechanism includes a part of the beam 6 on the processing line La,
By moving the work transfer device 7 in this part integrally to the processing line Lb side, the work transfer device 7 is moved to the position shown in FIG.
It is configured to transfer from the processing line La to the processing line Lb as shown by the two-dot chain line.

Further, an auxiliary member 40, which will be described in detail later, is disposed so as to be able to move up and down between the beams 6 of the processing lines La and Lb and above the beams 6 in correspondence with the processing units A to D and the plating processing unit E. When the surface treatment is performed in each of the processing units A to E, the auxiliary member 40 passes through between the beams 6 and descends to just above each of the processing units A to E. AE
It comes into contact with the cylinder block 1 supported by the.

FIG. 6 shows a processing liquid supply / discharge system for high speed plating in the plating processing section E. In these drawings, a treatment liquid supply pipe 21 and a treatment liquid recovery pipe 22 are provided between a tank 4E for storing a treatment liquid (plating liquid) and a pump 5E connected to the tank 4E, and a treatment device main body 30 having a work supporting portion. Is provided. The processing liquid supply pipe 21
While its upstream end side is connected to the pump 5E,
The downstream end side is a treatment liquid introducing passage 3 of the treatment device main body 30 described later.
Connected to 3. Further, the treatment liquid recovery pipe 22 has an upstream end connected to a treatment liquid outlet passage 39, which will be described later, of the treatment device main body 30, and a downstream end reaching the tank 4E.

The processing liquid supply pipe 21 is provided with a main automatic valve 23 and a main manual valve 24 for adjusting the processing liquid supply amount. Further, the excess liquid is returned to the tank 4E by the valves 23, 24. Also on the upstream side, the bypass passage 2 that branches from the processing liquid supply pipe 21 to reach the tank 4E
5, a bypass automatic valve 26 is provided in the bypass passage 25. On the other hand, a flow sensor 27 for adjusting the flow rate of the recovery liquid is provided in each of the processing liquid recovery pipes 22.
A flow path adjusting valve 28 is provided.

7 and 8 show a specific structure of the plating processing part E. In these figures, a support block 32 as a work support portion is provided on a base 31 of the processing apparatus main body 30, the cylinder block 1 is supported on the support block 32, and the opening portion of the cylinder 1b is supported. It is blocked by a block 32. Specifically, a cylinder component portion 1a having a plurality (six in the figure) of cylinders 1b arranged alternately in parallel at a predetermined inclination angle (90 ° in the illustrated example) and a crankcase portion 1c are integrally formed. Cylinder block 1 for the modified V engine
Is supported by the support block 32 in a state in which the cylinder 1b of one side row (one side row of cylinders arranged in a V shape) is vertically opened with respect to the state when mounted on a vehicle. In this state, each cylinder 1
The lower opening (opening on the head side) of b is the support block 32.
It is supposed to be blocked by.

A processing liquid introducing passage 33 extending in the lateral direction (cylinder arrangement direction) is formed in the supporting block 32 at a position below the cylinder disposing portion 1a of the cylinder block 1, and the processing liquid introducing passage 33 is formed. Both ends of 33 are connected to the processing liquid supply pipe 21. Each cylinder 1b of the cylinder block 1 is provided on the upper surface of the support block 32.
An opening 33a communicating with the treatment liquid introducing passage 33 is provided at a position corresponding to the above, and a seal portion 33b is provided around the opening 33a. And the support block 32
In the state where the cylinder block 1 is supported as described above, the lower openings of the cylinders 1b of the cylinder block 1 and the openings 33a are aligned with each other, and the sealing portion 33b surrounds the support block 32 in its peripheral portion. A seal is provided between the upper surface and the lower end surface (end surface on the head side) of the cylinder block 1.

Further, in the processing apparatus main body 30, an electrode 34 also serving as a flow path forming member is provided at a position corresponding to each cylinder 1b of one side row of the cylinder block 1 supported as described above.
Is provided. Each of the electrodes 34 is formed in a cylindrical shape, and is attached to a holder 35 attached to the base 31 via a cylindrical attachment member 36. The electrode 34 penetrates through the processing liquid introducing passage 33 and is upward from the opening 33a. Overhangs. Then, with the cylinder block 1 supported on the support block 32 as described above, the electrodes 34 project into the cylinders 1b of the cylinder block 1 and the upper ends of the electrodes 34 reach the vicinity of the upper ends of the cylinders 1b. In addition, a constant gap is maintained between the outer peripheral surface of the electrode 34 and the inner peripheral surface of the cylinder. As a result, inside and outside the electrode 34 in each cylinder 1b of the cylinder block 1,
Flow paths 37 and 38 communicating with each other are formed in the upper part, and the flow path 37 on the outer side communicates with the processing liquid introducing passage 33.

A through hole is formed in the holder 35, and the through hole and the internal space of the mounting member 36 are
Treatment liquid outlet passage 3 communicating with the passage 38 inside the electrode 34
9 is formed. The processing liquid outlet passages 39 are connected to the processing liquid recovery pipes 22 through the connecting pipes 22a. In addition, the mounting member 36 and the holder 35
The connection pipe 22a is made of a conductive material and is electrically connected to the rectifier.

The auxiliary member 40 is connected via a flange or the like to an operating shaft 41 which is operated by an air cylinder (not shown) fixed above the plating processing section E,
The air cylinder is configured to move up and down according to switching of air pressure supply / discharge. Specifically, the beam 6
Of the cylinder block 1 supported on the support block 32 and a lowered position in contact with the upper part of the cylinder block 1.

On the plate 42 of the auxiliary member 40, a plurality of fixing plates 43 (fixing members) for abutting the upper portion of the cylinder block 1 to fix the cylinder block 1 and the cylinders 1b opened vertically are provided. A seal member 44 to be inserted into an upper opening (crankcase side opening) which is an opening on the side opposite to the support block 32 side is provided.

As shown in FIGS. 8 and 9, the seal member 44 corresponds to the plate 42 corresponding to each cylinder 1b.
From the bottom of the cylinder 1b.
It is composed of a plurality of (three in the figure) mounting members 45 reaching the vicinity of the upper opening and a flat air tube 46 mounted on the lower end of each mounting member 45. Each of the plate 42 and the mounting member 45 has an air port 47 connected to an air supply portion (not shown) as an air supply means for the air tube 46, and an air communicating with the air port 47 and passing through the central portion of the mounting member 45. A passage 48 is formed, and the lower end of the air passage 48 communicates with the inside of the air tube 46 via a communication hole 49. Above air tube 4
The size and shape of No. 6 are set so that the outer circumference is in pressure contact with the inner circumferential surface of the cylinder 1b in the expanded state where air is supplied to the inside.

The fixed plate 43 is projected below the plate 42 so as to be located between the seal members 44 and outside the arrangement direction of the cylinders 1b, and the auxiliary member 40 is in the lowered position. , As shown in FIG.
The cylinder block 1 comes into contact with the edge of the crankcase portion 1c.

The specific construction of the plating treatment section E has been described above. However, in the plating treatment system of this embodiment, the pretreatment sections A to D other than the plating treatment section E are used.
Also has a structure basically similar to that of the plating processing part E. The structure will be briefly described below with reference to FIGS.

In these figures, the support block 52 provided on the base 51 of the processing apparatus main body 50 has the same structure as the support block 32 in the plating processing section E and is connected to a processing liquid supply pipe (not shown). The processing liquid introducing passage 53 is provided. In addition, each cylinder 1b of the cylinder block 1
A cylindrical flow path forming member 54 is disposed at a position corresponding to, and the lower end thereof is fixed to the base 51.

The flow path forming member 54 has substantially the same shape and arrangement as the electrode 34 in the plating processing section E,
It penetrates through the processing liquid introducing passage 53 and projects upward from the opening 53a. Then, with the cylinder block 1 supported by the support block 52, the flow path forming member 54 projects into each cylinder 1b, and the flow paths 57 and 58 are formed inside and outside the flow path forming member 54 of each cylinder 1b. It is like this.

On the base 51, the flow path forming members 5 are provided.
4, there is provided a processing outlet passage 59 including a port 59a communicating with the passage 58 inside 4, a communication passage 59b communicating with each port 59a, and an outlet passage 59c communicating with the communication passage 59b and extending downward. A processing liquid recovery pipe 60 is connected to the processing outlet passage 59.

In the plating processing system described above, the basic structure of each processing unit A to E is the processing line L.
Although the same is true for a and Lb, the specific configuration thereof, for example, the orientation of the fixing plate 43 in the auxiliary member 40 and the like is reversed horizontally (cylinder block 1
The left and right sides are reversed in the direction of travel).

Next, the plating process by the above-mentioned plating system configured as described above will be explained.

First, the cylinder block 1 is carried into the work introduction section 2 of the processing line La in the plating system by a conveyer such as a conveyor. At this time, in the cylinder block 1, for example, the arrangement direction of the cylinders 1b is lined up in the transport direction of the processing line La, the cylinders 1b of one side row are opened in the vertical direction, and the head side openings of the cylinders 1b of the other side row are opened. The part is carried into the work input part 2 in a state in which the part faces the outside (downward in FIG. 3) of the processing line La.

When the cylinder block 1 is loaded into the work loading part 2, the work transfer device 7 is arranged above the work loading part 2 and the frame body is moved in response to the operation of the lifting air cylinder 14. 9 is lowered. At this time, each work chuck 1 of the chuck mechanisms 10A and 10B
1A and 11B are held at positions separated from each other.

When the cylinder block 1 reaches the predetermined lower end position where the cylinder block 1 is interposed inside the frame body 9, the chuck mechanisms 10A and 10B are actuated, whereby the cylinder block 1 is moved from both sides by the work chucks 11A and 11B. Be held. Then, the lifting air cylinder 14
The cylinder block 1 is raised integrally with the frame body 9 in response to the switching of the air pressure supply to the cylinder body 1, and the cylinder block 1 is supported by the work transfer device 7 as shown by the two-dot chain lines in FIGS. 4 and 5. .

Then, the respective processing units A to A of the processing line La
In E, each of the water washing sections Ga to Ge, and the drying section F, the cylinder block 1 is sequentially set in the above-described state, whereby the cylinder 1b on one side of the cylinder block 1 is subjected to predetermined processing.

For example, the processing in the plating processing section E will be described. First, the cylinder block 1 is set on the support block 32 as shown in FIG. Then, the work transfer device 7 used for loading the cylinder block 1
Is moved to a predetermined retracted position, and then the auxiliary member 40 is lowered from the raised position. At this time, each seal member 44
When the supply of air to the air tube 46 is cut off and the auxiliary member 40 is completely lowered, the fixing plate 43 comes into contact with the edge of the crankcase portion 1c and the cylinder block 1 is fixed. At the same time, each seal member 44 is inserted into the corresponding upper opening of the cylinder 1b. Then, the air tube 4
Air is supplied to the air tube 6, and thereby the air tube 4
6 bulges outward, its outer periphery is pressed against the inner peripheral surface of the cylinder 1b, and the upper opening of each cylinder 1b of the cylinder block 1 is sealed.

When the setting of the cylinder block 1 is completed in this way, the plating solution is supplied and circulated through the piping system shown in FIG. 6, and the electrodes 34 are energized, whereby each cylinder of the cylinder block 1 is supplied. 1
High-speed plating of the inner peripheral surface of b is performed. That is, the processing liquid supply passage 21 to the processing liquid introduction passage 3 in the support block 32.
The plating solution sent to the No. 3 flow path 3 between the outer peripheral surface of the electrode 34 and the inner peripheral surface of the cylinder, as indicated by the arrow in FIG.
7 through the flow path 38 inside the electrode 34 and the treatment liquid outlet passage 39 to the treatment liquid recovery pipe 22. Thus, high speed plating is performed by applying a voltage while the plating solution flows along the cylinder inner peripheral surface which is the surface to be plated.

In this case, since the upper opening portion of each cylinder 1b is sealed by the sealing member 44 provided on the auxiliary member 40 as described above, the plating solution flowing in the cylinder 1b moves outward from the cylinder 1b. Overflow is reliably prevented, and high-speed plating processing is performed well.

In this way, when the treatments, washing, etc. on the cylinders 1b on one side of the cylinder block 1 in the treatment line La are completed, the cylinder block 1 is moved to the treatment line La by the work transfer device 7. While being transported to the terminal end portion, it is transferred to the processing line Lb integrally with the work transfer device 7 by the transfer mechanism 8.

When the cylinder block 1 is transferred to the processing line La, the rotating air cylinder 13 is operated in the work transfer device 7 and the chuck mechanism 10A,
In response to the rotation of 10B, the cylinder block 1 is rotated as shown by the alternate long and short dash line in FIG. That is, the cylinder block 1 is rotated 90 °, and the cylinder 1b of the other side row is rotated.
Is opened in the vertical direction, and the head side opening of the cylinder 1b in the one-sided row, which has completed the processing in the processing line La, is directed to the outside of the processing line Lb (upward in FIG. 3).

Then, in the processing line Lb, first,
The work transfer device 7 conveys the degreasing treatment part A to the degreasing treatment part A, which is placed on the support block 32 of the degreasing treatment part A and is separated from the work conveyance device 7. Then, the degreasing treatment is performed. 7 and transferred to the water washing unit Ga, and by repeating such work as in the above-mentioned processing line La, the processing in each processing unit or the like for the cylinder 1b in the other side row of the cylinder block 1, Rinsing and transportation are performed sequentially.

In this way, when the treatments, water washing, etc. on the cylinders 1b on the other side of the cylinder block 1 in the treatment line Lb are completed, the cylinder block 1 is placed on the work unloading unit 3, and For example, it is carried out to the next step by a carrying means such as a conveyor. The work transfer device 7 after the cylinder block 1 is unloaded is transferred from the processing line Lb to the processing line La by a transfer mechanism (not shown).

As described above, according to the plating processing system of the above embodiment, first, in the processing line La, the cylinders 1b on one side of the cylinder block 1 are subjected to pretreatment and plating, and then, Since the cylinder block 1 is transferred to the processing line Lb and the pretreatment and the plating process are performed on the cylinder 1b on the other side row in the processing line Lb, the cylinder block 1b of the cylinder block 1 formed with an angle difference is formed. The predetermined surface treatment is efficiently performed.

In particular, according to the processing system of the above embodiment, the work transfer device 7 for transferring the cylinder block 1 is made movable along the processing line La and the processing line Lb, and the work transfer device 7 has a cylinder. Since a mechanism for rotating the block 1 is provided, the cylinder block 1 is conveyed in each of the processing lines La and Lb, set to each of the processing units A to E, and the cylinder block from the processing line La to the processing line Lb. The operations such as transfer of No. 1 are continuously and smoothly performed.

Incidentally, as a configuration of the plating treatment system applied in the present invention, a treatment system as shown in FIG. 12 can be constituted in addition to the system of the above-mentioned embodiment. The processing system shown in this figure will be described below. It should be noted that components having the same functions as those of the above-described embodiment will be described using the same reference numerals.

This plating system has a one-line structure including the plating line Lc. The plating processing line Lc has almost the same structure as the plating processing line La in FIG. 1, but since it has a single line structure, the work unloading section 3 is provided on the downstream side thereof, and the processed work is processed. From here to the next step.

Above the plating processing line Lc, a pair of beams 6 are provided as a work transfer facility as the plating processing line L.
The work transfer device 7 is installed along the beam c
And a pair of beams 6a is further installed on the side of the plating processing line Lc, and each of the beam pairs is transferred at the upstream end and the downstream end of the plating processing line Lc. 8 are linked together. That is, the beam 6a constitutes a return path 61 for returning the work transfer device 7 from the downstream side to the upstream side of the plating processing line Lc. Further, a rotary table 62 for rotating the cylinder block 1 around the vertical axis is installed on the upstream side (the right side in FIG. 12) of the return path 61.

In this plating system, the cylinder block 1 loaded into the work loading part 2 is transported by the work transporting device 7 and the cylinders 1b on one side of the cylinder block 1 are transferred to the respective processing parts A to E. Treatment and washing are performed. At this time, the cylinder block 1 is carried into the work input part 2 and conveyed along the plating processing line La, for example, in the state shown by the chain double-dashed line in FIG.

Cylinder 1 on one side of cylinder block 1
When the process for b is completed, the cylinder block 1 and the work transfer device 7 are integrally returned to the upstream side of the plating process line Lc via the return path 61 in order to process the cylinder 1b in the other side row. Be done. At this time, when the cylinder block 1 is transferred to the return path 61,
The cylinder block 1 is rotated as shown by the alternate long and short dash line in FIG. 5 by the operation of the work transfer device 7, is then placed on the rotary table 62, and is rotated by 180 ° by the drive of the rotary table 62. The plating processing line L is held again by the work transfer device 7.
It is transported to the upstream side of c. As a result, the cylinder block 1 is returned to the upstream side of the plating processing line Lc in a state in which it is possible to process the cylinder 1b in the other side row, and in the state shown by the chain double-dashed line in FIG. . By returning the cylinder block 1 to the upstream side of the plating processing line Lc in such a state, the auxiliary member 40, which requires directionality, can be commonly used for the processing of the cylinders 1b in each row. There is.

That is, the lower end of the fixing plate 43 of the auxiliary member 40 shown in FIG. 7 has a shape corresponding to the end of the crankcase when the cylinder block 1 is in the state shown by the chain double-dashed line in FIG. If two processing lines La and Lb are provided as shown in FIG. 1, the auxiliary member 40 may be arranged symmetrically with respect to FIG. 7 on the processing line Lb.
In the case of the one-line configuration as shown in FIG. 12, the auxiliary member 4
In order to commonly use 0 for processing the cylinders 1b in each row, the cylinder block 1 is rotated to correspond to the fixing plate 43 of the auxiliary member 40 when processing the cylinders 1b in the other row. You can

The cylinder block 1 is the plating line L
When returned to the upstream side of c, the cylinders 1b of the one side row are subjected to the processing in each of the processing sections A to E, washing with water, etc., and then the work unloading section 3 is passed. It is delivered to the next process.

According to this plating processing system, since the processing for the cylinders 1b in each row of the cylinder block 1 can be performed by one plating processing line Lc, it is simpler than the plating processing system of the above embodiment. With the configuration, the surface treatment of the cylinder block 1 can be performed.

The above embodiment is an example in which the surface treatment apparatus according to the present invention is applied to a plating processing system, and the specific configuration thereof can be appropriately changed other than the above embodiment. For example, in each of the above-described embodiments, as shown in FIG. 7, the cylinder block 1 is mounted on the support block 32 by bringing the inclined surface of the fixed plate 43 provided on the auxiliary member 40 into contact with the edge of the crankcase portion 1c. It is configured to be fixed by pressing it to the bearing plate 1d of the crankshaft, which is formed in the crankcase portion 1c, as shown in FIG. It may be formed on the inclined surface of 43. According to this, the cylinder block 1 is pressed vertically downward with the protrusion 43a fitted in the bearing portion 1d, so that the cylinder block 1 can be more reliably pressed and fixed to the support block 32.

That is, in the structure of the above-mentioned embodiment in which the fixed plate 43 and the cylinder block 1 are in contact with each other with the inclined surface (that is, the structure in which the projection 43a is not provided on the fixed plate 43), the vertical direction with respect to the cylinder block 1 is obtained. In some cases, the pressing force in the direction is easily converted into the pressing force in the horizontal direction, so that the cylinder block 1 may not be sufficiently pressed against the support block 32.

On the other hand, if the fixing plate 43 is provided with the projection 43a and is fitted into the bearing portion 1d to press the cylinder block 1 as described above, the pressing force in the vertical direction is pressed in the horizontal direction. It is difficult to be converted into pressure, and the pressing force can be effectively applied in the vertical direction to firmly press the cylinder block 1 against the support block 32 to fix it. Therefore, the support block 32 and the cylinder block 1
The sealability between the cylinder block 1 and the cylinder block 1 can be enhanced, and horizontal displacement of the cylinder block 1 can be effectively prevented. However, when the seal between the support block 32 and the cylinder block 1 is sufficiently achieved by the weight of the cylinder block 1 and the horizontal positioning of the cylinder block 1 is surely performed by the pin member or the like. It is not always necessary to adopt a structure in which the protrusion 43a is provided. In addition to the provision of the protrusion 43 as the fitting portion as described above, for example, when the surface treatment work is performed with the crank cap attached to the end surface of the crankcase portion 1c of the cylinder block 1, A concave portion may be formed as a fitting portion on the fixing plate 43, and the concave portion may be fitted to the crank cap to fix the cylinder block.

Further, instead of the seal member 44 provided on the auxiliary member 40, for example, a seal member 70 as shown in FIG. 14 may be adopted.

In this seal member 70, a cylindrical mounting member 71 is projectingly provided under the plate 42 of the auxiliary member 40, and a tip end portion (lower end portion in the figure) of this mounting member 71 is made of an elastic material such as rubber. An umbrella-shaped seal piece 72 to be formed is attached. The sealing piece 72 has metal pieces 73 at appropriate intervals in the circumferential direction of the surface (upper surface in the figure), and is suspended and supported by the lower end surface of the mounting member 71 by a locking tool 74.

Although not shown, the plate 42 is provided with an air cylinder corresponding to each mounting member 71, and the movable rod 75 is attached to the operating shaft of the air cylinder.
And the movable rod 75 penetrates through the mounting member 71 and projects below the seal piece 72. A disk-shaped seal pressing member 76 is integrally formed at the tip portion (lower end portion in the figure) of the movable rod 75, and is integrally formed with the movable rod 75 in accordance with supply / discharge of air pressure to / from the air cylinder. It is designed to go up and down.

In this seal member 70,
The seal retainer 76 is held in the lower end position, that is, the seal piece 72 is inserted into the cylinder 1b in a state where the seal piece 72 is constricted by the weight of the metal piece 73 as shown by the two-dot chain line in FIG. The pressing member 76 is raised, and the compression force of the mounting member 71 and the seal pressing member 76 spreads the sealing piece 72 in an umbrella shape as shown by the solid line in the figure, and its peripheral portion is on the inner peripheral surface of the cylinder 1b. The pressure contact brings about the sealing of the cylinder 1b.

The specific structure of the seal member is not limited to the structure of each of the seal members 44 and 70, and may be appropriately configured so as to properly seal the cylinder 1b.

In each of the above-mentioned embodiments, the auxiliary member 40 is provided above the processing line La, Lb or Lc, and by raising or lowering it, the upper opening of each cylinder 1b in the cylinder block 1 is sealed by the sealing member. However, a jig having a seal member is previously attached to the cylinder block 1, and the cylinder 1b
The cylinder block 1 may be transported with the opening of the crankcase side sealed. According to this, it is possible to reduce the time required to seal the opening of each cylinder 1b in each of the processing sections A to E and to simplify the processing system.

Further, the fixing plate 43 having an isosceles right triangle as shown in FIG. 7 is used as a jig in advance for the cylinder block 1.
Is mounted on the end surface of the crankcase portion 1c of the above, and while the cylinder block 1 is being conveyed in this state, the processing units A to
In E, the cylinder block 1 may be pressed and fixed by an auxiliary member (a part of the auxiliary member 40 excluding the fixing plate 43) via the horizontal side portion of the fixing plate 43. With this configuration, even if the cylinder block 1 is rotated as shown by the alternate long and short dash line in FIG. 5 in order to perform processing on the other cylinder 1d, the horizontal side portion is secured on the fixed plate 43. The cylinder block 1 via the common fixing plate 43 regardless of the tilt direction of
Can be fixed. In particular, if this method is used when the surface treatment is performed with one line as shown in FIG. 12, it is not necessary to rotate the cylinder block 1 around the vertical axis, and thus the rotary table 62 is used.
A simpler processing system can be configured by omitting. The specific shape of the fixing plate is not limited to the isosceles right triangle, and may be appropriately selected so that the cylinder block 1 can be appropriately pressed and fixed before and after the rotation of the cylinder block 1. Further, when the fixing plate 43 is mounted on the cylinder block 1 in this manner, for example, the fixing plate 43 should be mounted by using a screw hole for mounting a crank cap which is screwed on the end surface of the crank case portion 1c of the cylinder block 1. You can

[0077]

As described above, according to the present invention,
The work is placed on the work support portion of the processing apparatus main body in a state where the flow path forming member is projected into any of the cylindrical portions formed on the work, and in this state, the treatment supplied from the treatment liquid supply means. The liquid flows from the treatment liquid introduction passage through the passage inside the cylindrical portion of the work and is led out from the treatment liquid outlet passage, and thus the treatment liquid is circulated and surface treatment is performed at high speed. Then, when the surface treatment on the tubular portion is completed, the holding mechanism removes the workpiece from the processing apparatus main body and rotates the workpiece, and the workpiece is supported in a state in which the flow path forming member protrudes into the other tubular portion. Placed on the department. As a result, the surface treatment is applied to the other tubular portion. Therefore, it is possible to efficiently perform the surface treatment on each tubular portion of the work having two or more tubular portions having an angle difference such as a cylinder block of a V-shaped engine.

In particular, in such a structure, a plurality of processing apparatus main bodies are provided side by side at the work processing location so as to continuously perform a predetermined surface treatment, and the holding mechanism can move over these processing apparatus main bodies. According to this structure, the holding mechanism has a function of conveying the work, and a smoother surface treatment work is performed.

If the work is a cylinder block of a V-type engine having at least one set of cylinders communicating with the crankcase portion at a predetermined angle, one cylinder of the cylinder block is subjected to a predetermined treatment. And a second line for performing a predetermined process on the other cylinder are provided in parallel, and a moving path of the holding mechanism is provided so as to pass through the second line after the process on the first line is completed. By doing so, first, in the first line,
While holding the cylinder block with one cylinder oriented in a predetermined direction, the one cylinder is subjected to a surface treatment, and then in the second line, the cylinder block is rotated with the other cylinder oriented in a predetermined direction. The other cylinder can be surface-treated. This allows the cylinder block to be continuously conveyed from the first line to the second line while smoothly performing processing work on each cylinder.

Further, if a sealing member for sealing the upper opening of the cylindrical portion of the work is provided above the main body of the processing apparatus, it is possible to reliably prevent the processing solution from overflowing and to improve the surface treatment. Done.

When the work is a cylinder block of a V-type engine, a fixing member for pressing and fixing the cylinder block to the work supporting portion is integrally provided with the seal member, and the fixing member is formed on the cylinder block. By providing the fitting portion for the bearing portion of the crankshaft, the cylinder block of the V-type engine can be more appropriately fixed to the work supporting portion.

[Brief description of drawings]

FIG. 1 is a schematic plan view of an entire plating processing system to which the apparatus of the present invention is applied.

FIG. 2 is a schematic front view of a plating system.

FIG. 3 is a schematic plan view showing a positional relationship between a work transfer device and each processing unit of the plating processing system.

FIG. 4 is a front view showing a specific structure of the work transfer device.

FIG. 5 is a view showing the work transfer device as viewed in the direction of arrow A in FIG.

FIG. 6 is a diagram showing a piping system for high-speed plating in a plating processing section.

FIG. 7 is a vertical cross-sectional front view showing a specific structure of the plating processing section with the cylinder block set.

8 is a cross-sectional view taken along the line VIII-VIII in FIG. 7, showing the structure of the plating processing part with the cylinder block set.

FIG. 9 is a cross-sectional view showing the structure of a seal member.

FIG. 10 is a vertical sectional front view showing the structure of the pretreatment unit.

11 is a cross-sectional view taken along the line XI-XI in FIG. 10 showing the structure of the pretreatment unit in the state where the cylinder block is set.

FIG. 12 is a diagram corresponding to FIG. 3 showing another example of the plating system.

FIG. 13 is a view corresponding to FIG. 7 showing another embodiment of the fixing plate provided on the auxiliary member.

FIG. 14 is a cross-sectional view of essential parts showing another embodiment of the seal member provided on the auxiliary member.

[Explanation of symbols]

 1 Cylinder Block 1b Cylinder 7 Work Transfer Device 9 Frame 10A, 10B Chuck Mechanism 11A, 11B Work Chuck 12A, 12B Clamping Air Cylinder 13 Rotating Air Cylinder 14 Lifting Air Cylinder 30 Processor Body 32 Support Blocks 37, 38 Flow Road

Claims (6)

[Claims] 1. A surface treatment method in which a treatment liquid is supplied to the inner peripheral surface of the tubular portion of a work having two or more tubular portions formed with different angles to perform surface treatment such as plating. In the cylindrical portion of any one of the workpieces, the workpiece is placed on the workpiece support portion of the processing apparatus main body in a state in which the flow channel forming member provided in the processing apparatus main body is thrust, After performing the surface treatment on the tubular portion by introducing and discharging the treatment liquid into the flow path configured inside the tubular portion by the constituent member, the work is removed from the processing apparatus main body and rotated, The work is placed on the work supporting part in a state in which the flow path forming member is projected into the other tubular part of the work, and the treatment liquid is introduced into and taken out from the tubular part. A surface treatment method, which comprises applying a treatment. 2. A surface treatment apparatus for supplying a treatment liquid to the inner peripheral surface of the cylindrical portion of a work having two or more cylindrical portions formed with different angles to perform surface treatment such as plating. In the main body of the processing apparatus installed at the work processing location, a work supporting part for supporting a work in a state where both side opening portions of any of the cylindrical parts face in a predetermined direction, and a predetermined direction in the work supporting state. A flow path forming member that forms a flow path of the processing liquid inside the tubular portion facing toward, a processing liquid introduction passage that communicates with the processing liquid inflow side of the flow path, and a processing liquid outflow side of the flow path. A processing liquid outlet passage communicating with the processing liquid inlet passage is connected to the processing liquid supply means, and the work is rotatably held above the processing device body so as to change the direction of the cylindrical portion. Surface treatment characterized by a holding mechanism that can be moved up and down apparatus. 3. A plurality of processing apparatus main bodies are arranged side by side at the workpiece processing location so as to continuously perform a predetermined surface treatment, and the holding mechanism is movably provided over these processing apparatus main bodies. The surface treatment apparatus according to claim 2, wherein 4. The cylinder block of a V-shaped engine, wherein the workpiece is a cylinder block having at least one set of cylinders as a cylindrical portion and communicating with the crankcase portion at a predetermined angle. Is a first cylinder in which one of the cylinder blocks is provided with a plurality of processing apparatus main bodies that are subjected to predetermined pretreatment and plating treatment in series.
A line is provided in parallel with a second line in which a plurality of processing apparatus main bodies for performing a predetermined pretreatment and plating treatment on the other cylinder are arranged in parallel, and after the processing in the first line is completed, The surface treatment apparatus according to claim 3, wherein the movement path of the holding mechanism is set so as to pass through two lines. 5. The surface treatment apparatus according to claim 2, further comprising a seal member provided above the treatment apparatus main body to seal an upper opening of the cylindrical portion of the work. . 6. The work is a cylinder block of a V-shaped engine, which has at least one set of cylinders as a tubular portion, which communicates with a crankcase portion at a predetermined angle, and which is a cylinder block of the processing apparatus main body. A fixing member that abuts on the cylinder block and fixes the cylinder block in a state of being pressed against the work supporting portion is provided together with the seal member above the bearing member of the crankshaft formed on the cylinder block. The surface treatment apparatus according to claim 5, further comprising a fitting portion for the.