JPH0874095A - Surface treatment equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] Space saving and improvement of work efficiency are achieved by improving the workability of mounting the work on the processing equipment. [Structure] On a support block 22 of a processing apparatus main body 20 that supports a cylinder block 1, electrodes 30 that form processing liquid flow paths 34 and 35 are provided inside a cylinder.
The position where the protrusions protrude from the surface of the support block 22 and enter into each cylinder of the cylinder block 1, and the support block 22.
I was able to move back and forth to the position where it was stored inside. Also,
The treatment liquid introduction passage 27 and the treatment liquid outlet passage 26, which communicate with the flow passages 34 and 35, are formed in the support block 22. Further, the auxiliary member 10 that abuts on the upper portion of the cylinder block 1
And an air tube 44 as a sealing member to be inserted into the upper opening of each cylinder, and the upper opening of each cylinder 1b is sealed by the bulging of the air tube 44.

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 processing apparatus, and more particularly to a surface processing apparatus that performs a 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 so as to project from the work supporting portion of the processing apparatus main body, and the flow path forming member projects into the cylinder while supporting the cylinder block. 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 in a state where both openings of the cylinder are sealed. It is like this.

[0004]

By the way, in the above-mentioned device, when a cylindrical flow path forming member is fixedly projected on the work supporting part, when the cylinder block is mounted on the work supporting part, First, it is necessary to suspend the work above the flow path forming member, and place the cylinder block on the work supporting part while allowing each flow path forming member to enter into each cylinder. Sufficient space is required to suspend the cylinder block above. However, in a cylinder block or the like having a long cylinder stroke, the amount of protrusion of the flow path forming member is large, so that the required space is expanded, which is disadvantageous in saving space in the surface treatment line and the like.

Further, when the work is a cylinder block of a multi-cylinder engine, the flow path forming members corresponding to the plurality of cylinders are mounted while being inserted, so that both the flow path forming members and the cylinder block may collide with each other. This work needs to be done carefully to avoid damage. However, since such work is performed in an unstable state with the cylinder block suspended, workability is poor and work efficiency is not preferable.

Further, for a cylinder formed in a state in which it is inclined to the left and right by a predetermined angle like a cylinder block of a V-type engine, a structure is made so that the flow path forming member can be inserted into both cylinders at the same time. There was a problem that it was difficult.

The present invention has been made in order to solve the above problems and provides a surface treatment apparatus capable of saving space and improving work efficiency by improving the mountability of a workpiece to a treatment apparatus. It is intended to be provided.

[0008]

A surface treatment apparatus according to a first aspect of the present invention is a surface treatment apparatus for supplying a treatment liquid to an inner peripheral surface of a cylindrical portion of a work having a cylindrical portion to perform surface treatment such as plating. An apparatus, a processing apparatus main body installed at a workpiece processing location, a work supporting section for supporting a work so as to close an opening on one side of the tubular portion, and a position protruding inside the surface of the work supporting section and the inside. A retractable position and a flow path constituent member that can be moved back and forth, the work is supported by the work supporting portion, and the flow path constituent member is held at the projecting position in the cylindrical portion of the work. A processing liquid flow path is formed inside, and the processing liquid introduction passage and the processing liquid discharge passage connected to the processing liquid supply means are communicated with the flow passage formed by the above-mentioned flow path constituent member. , To correspond to the above work The location auxiliary member, the workpiece supporting portion side of the cylindrical portion is provided with a sealing member for sealing the opening is inserted into the opening on the opposite side.

According to a second aspect of the present invention, in the surface treatment apparatus according to the first aspect, the work has a V shape in which at least one set of cylinders as a tubular portion communicates with a crankcase portion at a predetermined angle. A cylinder block of an engine, wherein the processing apparatus main body is provided with the flow path constituting members corresponding to the arrangement, angle and number of the cylinders of the cylinder block, while the auxiliary member is provided with the cylinders of the cylinder block. The seal members corresponding to the arrangement, angle and number of are provided.

According to a third aspect of the present invention, in the surface treatment apparatus according to the first or second aspect, a position where the auxiliary member comes into contact with the work and a position where the auxiliary member retracts from the position above the work support portion. It is provided so as to be movable.

According to a fourth aspect of the present invention, in the surface treatment apparatus according to any one of the first to third aspects, the auxiliary member is arranged so that the seal member is located in the opening of each cylinder on the crankcase portion side. It is attached to a member and is provided so as to be capable of expanding and contracting in a reduced diameter state in which it can be inserted into the opening and a expanded state in which it is pressed against the inner peripheral surface of the opening.

[0012]

According to the invention described in claim 1, the flow path forming member is held in a state of being retracted from the work supporting portion to the inside until the work is supported by the work supporting portion. Then, when the work is placed, the flow path forming member projects and is made to project into the cylindrical portion of the work, and the opening on one side of the work is closed by the work supporting portion, and the work of the cylindrical portion is further The opening on the side that is not blocked by the support is sealed by the seal member. Then, the treatment liquid supplied by the treatment liquid supply means flows from the treatment liquid introduction passage through the flow passage in 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. Done.

According to the second aspect of the present invention, when the cylinder block of the V-shaped engine is mounted on the work supporting portion, the flow path forming member projects into each cylinder formed at a predetermined angle. And the opening on the side opposite to the crankcase portion of the cylinder is closed by the work supporting portion, and the opening on the crankcase portion side of each cylinder is sealed by the seal member. Then, the treatment liquid supplied by the treatment liquid supply means is circulated, whereby the surface treatment is simultaneously performed on all the cylinders at high speed.

According to the third aspect of the present invention, when the work is set on the work supporting portion, the auxiliary member is brought into contact with the work and sealing is performed by the sealing member. Sometimes the auxiliary member is retracted.

According to the fourth aspect of the invention, the seal member seals the opening of the cylinder by expanding the seal member and pressing it against the inner wall surface of the cylinder.

[0016]

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 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, the processing parts A to D for various pretreatments, the plating part E and the drying part F are arranged along the plating line in an array corresponding to the working order. . Specifically, a degreasing treatment portion A, an alkali etching treatment portion B, a mixed acid etching treatment portion C, an alumite treatment portion D, a high speed plating treatment portion E and a drying portion F are arranged in this order. Further, water washing parts Ga, Gb, Gc, Gd and Ge are provided between the respective processing parts A to E and between the high speed plating processing part E and the drying part F, respectively.
Further, the work input part 2 is provided on the starting end side of the plating processing line, and the work unloading part 3 is provided on the end side of the plating processing line.

Outside the processing line, a degreasing liquid storage tank 4A, an alkaline liquid storage tank 4B, and a mixed acid liquid storage tank 4 are provided.
C, a mixed acid drainage tank 4C ', an alumite solution storage tank 4D, and a plating solution storage tank 4E are installed. Between the tanks 4A to 4E for the respective processing liquids and the corresponding processing units A to E, pumps 5A for supplying the processing liquids,
5B, 5D, 5E and piping for supplying and discharging the processing liquid (not shown in FIGS. 1 to 3) are provided.

Further, a work transfer facility is provided above the transfer line. The work transfer facility is, for example, a pair of parallel beams 6 installed at a predetermined height position.
And a plurality of work transfer devices 7 mounted so as to be movable along the beam 6 while straddling each of these beams 6. The work transfer device 7 includes a chuck 8 that can be moved up and down and a drive device 9 that moves the chuck 8 up and down, and the drive motor (not shown) moves the work transfer device 7 along the beam 6. The cylinder block 1 which is a work is provided with an engaging portion for the chuck 8 at the upper end, and the engaging portion is gripped by the chuck 8 so that it is suspended and held by the work transfer device 7. Has become.

Further, an auxiliary member 10, which will be described later, is disposed above and between the respective beams 6 so as to correspond to the respective processing sections A to D and the plating processing section E, and the respective processing sections A to D can be moved up and down. E
When the surface treatment is performed on the auxiliary member 10,
Goes down between the beams 6 and directly above the processing units A to E, and comes into contact with the cylinder block 1 supported by the processing units A to E.

Each of the processing sections A to E has a positioning means (not shown) for positioning and holding the cylinder block 1 in addition to a part constituting a main part of a processing apparatus which will be described in detail later. Clamping means and the like are provided.

FIG. 4 shows a treatment liquid supply / discharge system for high-speed plating in the plating treatment section E. In these drawings, a tank 4E for storing the treatment liquid (plating liquid) and a pump 5E connected to the tank 4E are shown. A processing liquid supply pipe 12 and a processing liquid recovery pipe 13 are arranged between the processing device main body 20 having a work supporting portion. The processing liquid supply pipe 12 has an upstream end connected to the pump 5E and a downstream end connected to a processing liquid introduction passage 27 of the processing device main body 20 described later. The processing liquid recovery pipe 13 has an upstream end connected to a processing liquid outlet passage 26, which will be described later, of the processing apparatus body 20, and a downstream end reaching the tank 4E.

The processing liquid supply pipe 12 is provided with a main automatic valve 14 and a main manual valve 15 for adjusting the processing liquid supply amount. Further, in order to return the surplus liquid to the tank 4E, the valves 14 and 15 are used. Also on the upstream side, the bypass passage 1 that branches from the processing liquid supply pipe 12 to reach the tank 4E
6, a bypass automatic valve 17 is provided in the bypass passage 16.

FIG. 5 shows a specific structure of the plated portion E. In the figure, a support block 22 as a work support portion is provided on a base 21 of the processing apparatus main body 20.
Is provided, the cylinder block 1 is supported on the support block 22, and the opening on one side of the cylinder 1 b is closed by the support block 22. In particular,
As shown in FIG. 6, a plurality (six in the figure) of cylinders 1b that are alternately arranged side by side at a predetermined inclination angle to the left and right.
Cylinder component 1a and crankcase part 1
The cylinder block 1 of the V-type engine integrally formed with c is supported by the support block 22 in a state inverted up and down with respect to the state when mounted on a vehicle. The opening (head-side opening) is closed by the support block 22.

The support block 22 is formed with a cylindrical hollow portion 23 which is open at a position corresponding to each cylinder 1b of the cylinder block 1 and extends in a direction in which each cylinder 1b is extended. A columnar electrode 30 which also serves as a flow path constituent member is inserted into each of the electrodes 23 in a state where the axial movement thereof is allowed.

The support block 22 is provided in each hollow portion 23.
A treatment liquid outlet chamber 23b and a treatment liquid inlet chamber 23c are formed at a predetermined interval from the upper side of the treatment liquid outlet chamber 23b.
b and the treatment liquid introduction chamber 23c, the treatment liquid outlet passage 26 and the treatment liquid introduction passage 27 are respectively connected to the support block 22.
Is formed. Then, these processing liquid outlet passages 2
6 and the treatment liquid introduction passage 27 are connected to the treatment liquid recovery pipe 13 and the treatment liquid supply pipe 12, respectively.

Further, in each of the hollow portions 23, a portion above the processing liquid outlet chamber 23b is formed to have a diameter larger than that of the electrode 30, and a seal is provided around the opening portion 23a facing the cylinder block 1. A section 24 is provided. Then, in the state where the cylinder block 1 is supported on the support block 22 as described above, the lower opening portion of each cylinder 1b of the cylinder block 1 and each hollow portion 23 described above.
Of the support block 22 and the lower end surface (end surface on the head side) of the cylinder block 1 is sealed by the seal portion 24 at the peripheral portion thereof.

Each of the electrodes 30 is formed in a cylindrical shape having an inner cylinder and an outer cylinder, and an appropriate amount of nickel pellets for replenishment is stored between the inner and outer cylinders. The wall surface of the electrode 30 has, for example, a net shape, and during the plating treatment described later, the nickel pellets contained in the plating solution are melted according to the precipitation of nickel in the circulating plating solution, so that the nickel in the plating solution is dissolved. It is designed to maintain the concentration.

The electrode 30 is attached to the tip of a cylindrical holder 31 having substantially the same diameter as the electrode 30.
Is integrally inserted into the hollow portion 23 of the support block 22. Base end of each holder 31 (lower end in FIG. 5)
Although not shown in detail, an operating shaft of an air cylinder 32 fixed to a base 21 of the processing apparatus main body 20 is connected to the. Then, in the operating state of the air cylinder 32 in which the cylinder block 1 is supported on the support block 22 as described above and the air pressure is supplied to the air cylinder 32, as shown in FIG. Part 23
The upper end of the electrode 30 reaches the vicinity of the upper end of the cylinder 1b by penetrating into each cylinder 1b of the cylinder block 1 through a. On the other hand, when the air cylinder 32 is in a stopped state where the air pressure is discharged from the air cylinder 32, the electrode 30 is housed in the support block 22.

In the operating state of the air cylinder 32 described above, a constant gap is maintained between the outer peripheral surface of the electrode 30 and the inner peripheral surface of the cylinder, whereby the outside of the electrode 30 in each cylinder 1b of the cylinder block 1 is maintained. Flow paths 34 and 35 that communicate with each other are formed on the upper side and the inner side, and the flow path 34 on the outer side has the opening portion 23a and the processing liquid outlet chamber 23.
It is adapted to communicate with the processing liquid outlet passage 26 via b.

Further, in each of the holders 31, as shown in FIG. 5, in a state where the air cylinder 32 is operated, an opening 31b opening to the processing liquid introducing chamber 23c and the opening 31b through the opening 31b. A hollow portion 31a that connects the flow path 38 inside the electrode 30 and the treatment liquid introduction chamber 23c is formed. The electrode 30 is electrically connected to a rectifier (not shown).

The auxiliary member 10 is connected via a flange or the like to an operating shaft of an air cylinder 36 fixed above the plating processing section E, and in response to supply and discharge of air pressure to the air cylinder 36. It is configured to be lifted and lowered by being guided by the rod 37. Specifically, ascending / descending position above the beam 6 and ascending / descending position where it abuts on the upper portion of the cylinder block 1 supported by the support block 22, as shown in FIG. .

The auxiliary member 10 includes the cylinders 1b described above.
And a seal member that is inserted into an upper opening (a crankcase-side opening) that is an opening on the side opposite to the support block 22 side, and an outer peripheral expansion of the seal member by giving expansion force to the outer peripheral side of the seal member. And an operating means for pressing the inner surface of the cylinder 1b against the inner peripheral surface of the cylinder 1b. In this embodiment, the seal member and the actuating means have a structure as shown in FIG.

In FIG. 1, the auxiliary member 10 includes an air cylinder 42 and a plate 41, which is in contact with the upper end of the cylinder block 1 and corresponds to each cylinder 1b of the cylinder block 1, and projects obliquely downward from the plate 41. And a cylindrical mounting member 43 reaching the vicinity of the upper opening of the cylinder 1b, and the operating shaft of each air cylinder 42 penetrates through the plate 41 and the mounting member 43 to face the vicinity of the upper opening of the cylinder 1b. Protruding into position. A plate 48 is attached to the tip of the operating shaft of each air cylinder 42, and a flat air tube 44 as a seal member is attached to the lower end of each attachment member 43. The air tube 44 has its outer periphery pressed against the inner peripheral surface of the cylinder 1b in a radially expanded state in which air is supplied and is vertically compressed, and in a reduced diameter state in which air is not supplied inside, When the auxiliary member 10 moves up and down, so as not to come into contact with the inner wall surface of the crankcase portion 1c,
Its size and shape are set.

An air port 45 connected to a pressurizing air supply portion (not shown) as air supply means for the air tube 44 is provided in each of the plate 41 and the mounting member 43.
And an air passage 46 communicating with the air port 45 and passing through the central portion of the mounting member 43, and the lower end of the air passage 46 communicates with the inside of the air tube 44 through the communication hole 47.

Next, the surface treatment by the apparatus constructed as described above will be explained with reference to FIG. Here, a case will be described in which the plating processing section E performs the plating processing on the cylinder block 1 in the above processing system.

First, the cylinder block 1 is transferred to the plating processing section E from the water washing section Gd after the previous step, that is, after the alumite processing by the work transfer apparatus 7, and is placed on the support block 22 of the processing apparatus main body 20 in the plating processing section E. To be done. At this time, the auxiliary member 10 is retracted above the beam 6,
Further, each electrode 30 of the processing apparatus main body 20 is housed in the support block 22 as shown in FIG. This prevents the auxiliary member 10 and the electrode 30 from interfering with the work of loading the cylinder block 1. Also,
In the state shown in the figure, the opening 31b of the holder 31 does not face the treatment liquid introducing chamber 23c, and therefore, the supply of the plating liquid into the holder 31 (hollow portion 31a) is blocked. There is.

When the cylinder block 1 is placed on the support block 22 in this manner, the work transfer device 7 used for loading the cylinder block 1 is moved to a predetermined retreat position, as shown in FIG. The auxiliary member 10 is lowered as shown. At this time, the supply of the pressurized air to each air tube 44 is lowered in a state where the supply of the pressurized air is cut off, and the auxiliary member 10 is completely lowered, so that the plate 41 abuts on the upper portion of the cylinder block 1 and The tubes 44 are inserted into the upper openings of the corresponding cylinders 1b (shown by the chain double-dashed line in FIG. 7). Then, while the pressurized air is supplied to the air tube 44,
The air cylinder 42 is actuated, whereby the plate 48 is pulled up and the air tube 44 is vertically compressed as shown by the solid line in FIG.
Bulge outward and its outer periphery is pressed against the inner peripheral surface of the cylinder 1b to seal the upper opening of each cylinder 1b of the cylinder block 1.

When the upper opening of each cylinder 1b is sealed, each air cylinder 3 of the processing apparatus main body 20 is sealed.
2 is operated, and as a result, the electrode 30 and the holder 31 are raised (advanced) as shown in FIG. 8C, and each electrode 30 is thrust into each cylinder 1b of the cylinder block 1. When the opening 31b of each holder 31 faces the processing liquid introducing chamber 23c, the plating solution is supplied and circulated through the piping system shown in FIG.
0 is energized, whereby high-speed plating of the inner peripheral surface of each cylinder 1b of the cylinder block 1 is performed. That is, the plating liquid sent from the treatment liquid supply pipe 12 to the treatment liquid introduction passage 27 in the support block 22 is treated by the treatment liquid introduction chamber 23c, the hollow portion 31a of the holder 31, and the electrode as shown by the arrow in FIG. A treatment liquid recovery pipe passing through a flow passage 35 inside 30 and the flow passage 34 between the upper surface of the cylinder 1b and the outer peripheral surface of the electrode 30 and the inner peripheral surface of the cylinder, the treatment liquid outlet chamber 23b, and the treatment liquid outlet passage 26. Flow to 13. In this way, high speed plating is performed by applying a voltage while the plating solution flows along the inner peripheral surface of each cylinder 1b which is the surface to be plated.

At this time, since the upper opening of each cylinder 1b is sealed by the sealing member provided on the auxiliary member 10, the plating solution flowing in the cylinder 1b is prevented from leaking to the outside of the cylinder, and the high speed is achieved. The plating process will be performed well.

After performing the predetermined plating process on each cylinder 1b of the cylinder block 1, the cylinder block 1 is removed from the processing apparatus main body 20 of the plating processing section E by performing the operation reverse to the above. Then, it is carried out to the next step by the work transfer device 7, that is, to the water washing unit Ge.

By the way, the apparatus of the present invention can be applied not only to the plating treatment section E but also to the pretreatment sections of the treatment sections A to D. Here, the apparatus of the present invention can be applied to these pretreatment sections. The structure when applied is briefly described with reference to FIG.

In the figure, the base 5 of the processing apparatus main body 50
The support block 52 provided on the plate 1 is the plating processing part E.
The support block 22 in FIG. That is, a hollow portion 53 is formed in the support block 52 so as to correspond to each cylinder 1b of the cylinder block 1, and the treatment liquid outlet chamber 53b and the treatment liquid introduction chamber 53 are provided in the hollow portion 53.
c is provided, and these processing liquid outlet chambers 53b are provided.
A processing liquid outlet passage 56 and a processing liquid inlet passage 57, which communicate with the processing liquid inlet chamber 53c, are formed in the support block 52.

A cylindrical rod 54 as a flow path forming member is fitted in the hollow portion 53, and the rod 54 is connected to an operating shaft of an air cylinder 60. The rod 54 is used for the electrode 3 in the plating processing section E.
0 and the holder 31 are formed in a substantially similar shape to each other, and can be moved back and forth between a state of being housed in the support block 52 and a state of protruding from the support block 52 according to the operation of the air cylinder 60. It has become. Then, as shown in the figure, in a state in which the cylinder block 1 is supported on the support block 52 and the air cylinder 32 is operated, the rod 54 rushes into each cylinder 1b of the cylinder block 1 to move the cylinder 1b. Reaching the vicinity of the upper end, the flow paths 58, 5 are formed inside and outside the rod 54 in the cylinder 1b.
9 is formed. In addition, the rod 54
Is formed with an opening 54b that opens to the processing liquid introducing chamber 53c in a state where the air cylinder 32 is operated, so that the inside of the rod 54 and the processing liquid introducing chamber 53c communicate with each other.

Even when processing is performed in the pre-processing section in which the processing apparatus main body 50 is constructed as described above, the cylinder block 1 is supported by the support block 52 as described above, and the auxiliary member 10 is provided above the cylinder block 1. Abut.
Then, the processing liquid fed into the processing liquid introduction passage 57 via the processing liquid supply pipe by a pump (not shown) passes through the flow paths 58 and 59 constituted by the rod 54 in each cylinder 1b of the cylinder block 1. Cylinder 1b
The flow of the processing liquid along the inner peripheral surface of the can be obtained. As a result, various pretreatments are also speeded up.

As described above, in the surface treatment apparatus of the above embodiment, the electrode 30 as the flow path forming member can be moved back and forth between the state of being housed inside the support block 22 and the state of protruding. As described above, even in the cylinder block 1 of the V-shaped engine, the surface treatment work can be simultaneously performed on all the cylinders 1b. Therefore, the efficiency of the surface treatment work can be improved.

Further, according to the processing apparatus main body 20, the cylinder block 1 is attached to the supporting block 2 of the processing apparatus main body 20.
Since the electrode 30 is housed in the support block 22 as described above when it is mounted on the second block 2, there is also an advantage that the cylinder block 1 can be conveyed while being held immediately above the support block 22. That is, when the flow path forming member is always projected on the work supporting portion, the work is hung and conveyed to a position sufficiently higher than the flow path forming member in order to avoid collision between the work and the flow path forming member. Alternatively, it is necessary to provide a transport path for transporting while avoiding the flow path constituent members, and the design of the processing line imposes restrictions on the space above the main body of the processing apparatus and the transport path of the work.
However, in the processing apparatus main body of the above-described embodiment, since the flow path forming member (electrode 30) can be housed in the support block 22 as described above, the above restrictions are alleviated. In particular, when a cylinder block having a relatively long cylinder stroke is targeted, the protrusion amount of the flow path forming member also increases in accordance with the stroke, and the space required above the processing apparatus main body also expands. In such a case, adopting the configuration of the present invention is effective in saving space in the processing line.

Further, according to the apparatus of the above-mentioned embodiment, if the cylinder block 1 is placed on the support block 22 and positioned, then each electrode 30 is automatically moved to the cylinder 1b.
Since it is inserted into the inside, there is an advantage that the cylinder block 1 can be set in the processing apparatus main body 20 by an extremely easy work. In other words, when the flow path forming member is fixedly projected, the work of placing the flow path forming member on each of the cylinders of the cylinder block 1 on the support block while inserting the flow path forming member into each cylinder is performed. Although required, in the apparatus of the above embodiment, the cylinder block can be set accurately and quickly in the processing apparatus without performing such unstable and careful work.
In particular, even when the work is a cylinder block of a V-shaped engine as in the present embodiment, the flow path forming member (electrode 30) does not interfere with the setting of the work, and the work can be set easily and quickly. Can be done.

Further, in the apparatus of the above embodiment, the auxiliary member 10 is provided as described above, and the air tube 44 as a sealing member attached to the auxiliary member 10 seals the upper opening of each cylinder 1b of the cylinder block 1. Therefore, there is also an advantage that the structure of the electrode 30 as a flow path forming member can be simplified. That is, as a structure for sealing the upper opening of each cylinder 1b, a structure in which a seal member is integrally provided on the upper end of the electrode 30 is conceivable. However, as in the above-described embodiment, the electrode 30 stores replenishing nickel pellets. If the device is further provided with a seal member, the structure of the electrode 30 becomes complicated, and high rigidity is required, which is disadvantageous in terms of design or cost. However, it is possible to avoid the above-mentioned inconvenience by using the structure in which the electrode 30 and the seal member are separated as in the above embodiment.

The above-mentioned processing apparatus is an embodiment of the surface processing apparatus according to the present invention, and the specific configuration can be appropriately changed without departing from the spirit of the present invention.

For example, as the structure of the seal member in the auxiliary member 10, as shown in FIG. 10, an elastic seal member 49 formed of an elastic material such as rubber in a substantially disk shape is attached to the lower end portion of the mounting member 43. You may do so. With this structure, the elastic seal member 49 is pulled up by the operation of the air cylinder 42 from the state shown by the chain double-dashed line in the figure in which the elastic seal member 49 is inserted into the upper opening of the cylinder 1b. Is vertically compressed and bulges outward, and its outer periphery is pressed against the inner peripheral surface of the cylinder 1b. Even with such a configuration of FIG. 10, it is possible to obtain the sealing effect for the upper opening of the cylinder 1b as in the above-described embodiment. Moreover, according to this configuration, the structure for supplying the pressurized air to the air tube 44 (the air port 45, the air passage 46,
There is an advantage that the communication hole 47) is unnecessary and the structure of the auxiliary member 10 can be simplified.

[0053]

As described above, according to the present invention,
Until the work is supported by the work supporting portion, the flow path forming member is held in a state of being retracted inside from the work supporting portion. Then, when the work is placed, the flow path forming member is projected to be inserted into the cylindrical portion of the work,
The opening on one side of the work is closed by the work supporting portion, and the opening on the side of the cylindrical portion which is not closed by the work supporting portion is sealed by the seal member. Therefore,
There is no need to hang the work up to a sufficiently high position and place it on the work support to avoid collision between the work and the flow path forming member, as in the case where the flow path forming member is fixedly provided.
As a result, the space occupied by the device can be reduced. In addition, the work is unstable such that the work is placed on the work supporting portion while inserting the flow path forming member into the cylindrical portion of the work.
In addition, since the work that requires caution is unnecessary, it is possible to perform the work of placing the work on the work support portion accurately and quickly, and thus the work efficiency can be improved.
Particularly, in this configuration, the V
-Shaped engine cylinder block is provided with a flow path forming member corresponding to each cylinder array, angle and number, while the auxiliary member is provided with a seal member corresponding to each cylinder block array, angle and number. By doing so, when the work is a cylinder block of a V-type engine, setting work and the like can be easily performed, and
It is possible to apply surface treatment to all cylinders of the engine at the same time.

Further, if the auxiliary member is provided above the work supporting portion so as to be movable between a position in contact with the work and a position retracting from this position, the work is set on the work supporting portion. In this state, the auxiliary member is brought into contact with the work and is sealed by the seal member, and the auxiliary member is retracted when the work is loaded or unloaded.

Further, the seal member is attached to the auxiliary member so as to be positioned inside the opening of each cylinder on the side of the crankcase, and the reduced diameter state in which the seal member can be inserted into the opening and pressure contact with the inner peripheral surface of the opening. If the diameter of the cylinder is increased and reduced, the opening of the cylinder can be surely sealed.

[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 diagram showing a piping system for high-speed plating in a plating processing section.

FIG. 5 is a vertical sectional front view of a surface treatment apparatus according to an embodiment of the present invention applied to a plating treatment section.

FIG. 6 is a schematic plan view showing a cylinder block set on a support block of a plating processing section.

FIG. 7 is an enlarged cross-sectional view showing a portion of the work fixing means that seals the upper opening of the cylinder of the cylinder block.

8A to 8C are schematic cross-sectional views for explaining the work procedure of mounting the cylinder block on the support block.

FIG. 9 is a vertical sectional front view of a surface treatment apparatus according to an embodiment of the present invention applied to a pretreatment unit.

FIG. 10 is an enlarged cross-sectional view showing another example of a portion for sealing the upper opening of the cylinder of the cylinder block in the work fixing means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylinder block 1b Cylinder 1b 10 Auxiliary member 12 Treatment liquid supply pipe 13 Treatment liquid recovery pipe 20 Treatment device main body 22 Support block 23, 31a Hollow part 23b Treatment liquid outlet chamber 23c Treatment liquid introduction chamber 26 Treatment liquid introduction passage 27 Treatment liquid introduction Passage 30 Electrode 31 Holder 32 Air cylinder 34, 35 Flow passage 44 Air tube

Claims (4)

[Claims] 1. A surface treatment apparatus for supplying a treatment liquid to the inner peripheral surface of the cylindrical portion of a work having a cylindrical portion to perform surface treatment such as plating, the treatment apparatus being installed at a work treatment location. In the main body, a work support portion that supports the work so as to close the opening on one side of the tubular portion, and a flow path configuration that can move back and forth between a position protruding to the surface of the work support portion and a position retracted inside. A member is provided so that the work is supported by the work supporting portion, and the flow path of the processing liquid is formed inside the cylindrical portion of the work while the flow path forming member is held at the projecting position. At the same time, the processing liquid introduction passage and the processing liquid discharge passage connected to the processing liquid supply means are connected to the flow passage constituted by the flow passage constituent member, while the auxiliary member is arranged to correspond to the work. , Workpiece support for the cylindrical part A surface treatment apparatus comprising a seal member that is inserted into an opening on the side opposite to the side to seal the opening. 2. The work is a cylinder block of a V-shaped engine, in which at least one set of cylinders as a tubular portion has a predetermined angle and communicates with a crankcase portion, and the processing device main body includes the cylinders. The flow path forming member corresponding to the arrangement, angle and number of each cylinder of the block is provided, while the auxiliary member is provided with the sealing member corresponding to the arrangement, angle and number of each cylinder of the cylinder block. The surface treatment apparatus according to claim 1, wherein 3. The auxiliary member is provided above the work support portion so as to be movable between a position in contact with the work and a position retracted from this position. The surface treatment device described. 4. The seal member is attached to the auxiliary member so as to be located in the opening of each cylinder on the crankcase portion side, and has a reduced diameter state in which the seal member can be inserted into the opening and the inner circumference of the opening. The surface treatment apparatus according to any one of claims 1 to 3, wherein the surface treatment apparatus is provided so as to be capable of expanding and contracting in a diameter expanded state in which the surface is pressed against the surface.