JP3244962B2 - Surface treatment equipment - Google Patents

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 a pretreatment thereof. The present invention relates to a processing apparatus, and more particularly, to a surface processing apparatus that performs a surface treatment at a high speed while flowing a processing liquid to a surface to be processed.

[0002]

2. Description of the Related Art Conventionally, various techniques relating to surface treatment, such as plating a work surface of a work or performing degreasing as a pre-process, are known. For example, it is generally known that a workpiece is immersed in a tank storing a processing liquid to perform plating or the like. However, this method requires a long processing time and has poor performance.

For this reason, in recent years, it has been considered to increase the processing efficiency and make high-speed processing possible by flowing a processing liquid to a surface to be processed of a work. The applicant of the present application has also developed and filed an apparatus for performing plating or the like while flowing a processing solution on the inner peripheral surface of a cylindrical portion of a work having a cylindrical portion such as an engine cylinder block (patented in 1994). No. 134714). In this apparatus, a cylindrical flow path component is protruded from a work supporting portion of the processing apparatus main body, and the channel component is protruded into the cylinder while supporting the cylinder block. Then, a predetermined surface treatment is performed on the inner wall surface of the cylinder by flowing the processing liquid between the outer peripheral surface of the flow path constituting member and the inner wall surface of the cylinder in a state where both openings of the cylinder are sealed. It has become.

[0004]

In the above-mentioned apparatus, when a cylindrical flow path component is fixedly protruded from the work supporting portion, when the cylinder block is mounted on the work supporting portion, First, it is necessary to suspend the work above the flow path component, and to place the cylinder block on the work support part while allowing each flow path component 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 stroke of the cylinder, the required amount of the above-mentioned space is increased due to a large amount of protrusion of the flow path constituent member, which is disadvantageous in reducing the space of a surface treatment line or the like.

Further, when the work is a cylinder block of a multi-cylinder engine, since the flow path components corresponding to the plurality of cylinders are mounted while being inserted into the cylinders, both of the flow path components and the cylinder block due to collision or the like are mounted. This must be done carefully to avoid damage to the device. However, such work is performed in an unstable state in which the cylinder block is hung, so that workability is poor and work efficiency is not preferable.

Further, for a cylinder formed to be inclined at a predetermined angle to the left and right, such as a cylinder block of a V-type engine, the structure is such that a flow path component can be inserted into both cylinders at the same time. There was a problem that it was difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a surface treating apparatus capable of saving space and improving work efficiency by improving the workability of a workpiece to the treating apparatus. It is intended to provide.

[0008]

According to a first aspect of the present invention, there is provided 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 a surface treatment such as plating. An apparatus, a processing apparatus main body installed at a workpiece processing location, a workpiece support section for supporting a workpiece so as to close an opening on one side of the cylindrical portion, and a position protruding from the surface of the workpiece support section and the inside thereof. A retreating position and a reciprocating flow path component member are provided, the work is supported by the work support portion, and the flow path component member is held at the protruding position. A processing liquid flow path is formed inside the processing liquid supply passage, and a processing liquid introduction passage and a processing liquid discharge passage connected to the processing liquid supply unit communicate with the flow path formed by the flow path constituent member. , Corresponding 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 workpiece has a V-shape in which at least one set of cylinders as a cylindrical portion communicates with a crankcase portion at a predetermined angle. In the cylinder block of the engine, the processing device main body is provided with the flow path constituent members corresponding to the arrangement, angle, and number of each cylinder of the cylinder block, while the auxiliary member is provided with each cylinder of the cylinder block. The above-mentioned 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, the auxiliary member has a position above the work supporting portion that abuts the work and a position that retreats from the position. Are 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 positioned so that the seal member is located in the opening of each cylinder on the crankcase side. It is attached to a member, and is provided so as to be freely expandable and contractable between a reduced diameter state in which it can protrude into the opening and an expanded state in which it is pressed against the inner peripheral surface of the opening.

[0012]

According to the first aspect of the present invention, until the work is supported by the work support, the flow path constituent member is held in a state of being retracted inside from the work support. Then, when the work is placed, the flow path constituent member protrudes and enters 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 closed. The opening on the side that is not blocked by the support portion is sealed by the seal member. Then, the processing liquid supplied by the processing liquid supply means flows through the flow path in the cylindrical portion of the work from the processing liquid introduction passage, and is drawn out from the processing liquid discharge passage. Thus, the processing liquid is circulated, and the surface treatment is performed at high speed. Done.

According to the second aspect of the present invention, when the cylinder block of the V-type engine is mounted on the work supporting portion, the flow path constituting member projects and is formed in each of the cylinders formed at a predetermined angle. , 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 side of the crankcase portion of each cylinder is sealed by a seal member. Then, by circulating the processing liquid supplied by the processing liquid supply means, surface treatment is simultaneously performed on all 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 a position where it comes into contact with the work and the seal member seals the work. Sometimes the auxiliary member is retracted.

According to the fourth aspect of the present invention, the sealing of the opening of the cylinder by the sealing member is performed by expanding the sealing member and pressing it against the inner wall surface of the cylinder.

[0016]

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

FIGS. 1 to 3 schematically show an 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-type engine, and the inner peripheral surface of the cylinder (cylindrical portion) is plated. The type of plating is not limited by the present invention, but in the examples, composite plating containing silicon carbide and phosphorus as a dispersant is applied to nickel.

In this plating system, processing units A to D for various pretreatments, a plating unit E, and a drying unit F are arranged along the plating line in an arrangement corresponding to the work order. . Specifically, a degreasing section A, an alkali etching section B, a mixed acid etching section C, an alumite section D, a high-speed plating section E and a drying section F are arranged in this order. Further, washing sections Ga, Gb, Gc, Gd, and Ge are provided between the processing sections A to E and between the high-speed plating section E and the drying section F, respectively.
In addition, a work input unit 2 is provided at the start end of the plating processing line, and a work unloading unit 3 is provided at the end 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
C and a mixed acid drainage tank 4C ', an alumite solution storage tank 4D, and a plating solution storage tank 4E. Pumps 5A and 5A for supplying the processing liquid are provided between the processing liquid tanks 4A to 4E and the corresponding processing units AE.
Pipes 5B, 5D, 5E and processing liquid supply / discharge (omitted in FIGS. 1 to 3) are provided.

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

Further, an auxiliary member 10 to be described later is disposed between the beams 6 so as to be movable up and down corresponding to the processing units A to D and the plating processing unit E. E
When the surface treatment is performed in the auxiliary member 10
Passes between the beams 6 and descends to just 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 units A to E includes, in addition to a part constituting a main part of the processing apparatus described later in detail, positioning means (not shown) for positioning and holding the cylinder block 1. Clamping means and the like are provided.

FIG. 4 shows a processing solution supply / discharge system for high-speed plating in the plating section E. In these figures, a tank 4E for storing a processing solution (plating solution) and a pump 5E connected thereto are shown. A processing liquid supply pipe 12 and a processing liquid recovery pipe 13 are disposed between the processing apparatus 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 apparatus main body 20, which will be described later. In addition, the processing liquid recovery pipe 13 has an upstream end connected to a processing liquid lead-out passage 26 of the processing apparatus main body 20 described later, and a downstream end connected to 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 supply amount of the processing liquid. In order to return the excess liquid to the tank 4E, the valves 14 and 15 are used. The bypass passage 1 branches upstream from the processing liquid supply pipe 12 to the tank 4E.
A bypass automatic valve 17 is provided in the bypass passage 16.

FIG. 5 shows a specific structure of the plating section E. In FIG. 1, a support block 22 as a work support unit is provided on a base 21 of the processing apparatus main body 20.
The cylinder block 1 is supported on the support block 22, and an 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 alternately arranged in parallel at a predetermined inclination angle toward the left and right.
Cylinder component 1a having crankcase portion 1
c is integrally formed with the cylinder block 1 of the V-type engine, which is supported by the support block 22 in a state where the cylinder block 1 is turned upside down with respect to a 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 columnar hollow portion 23 which is opened at a position corresponding to each cylinder 1b of the cylinder block 1 and extends in a direction in which each cylinder 1b extends. A cylindrical electrode 30 also serving as a flow path constituent member is inserted into each of the reference numerals 23 in a state where movement in the axial direction is allowed.

Each of the hollow portions 23 has a support block 22
A processing liquid outlet chamber 23b and a processing liquid introduction chamber 23c are formed at predetermined intervals from the upper side of the processing liquid outlet chamber 23b.
b and a processing liquid introduction passage 27 communicating with the processing liquid introduction chamber 23c, respectively.
Is formed. And, these processing liquid outlet passages 2
6 and the processing liquid introduction passage 27 are connected to the processing liquid recovery pipe 13 and the processing liquid supply pipe 12, respectively.

In each of the hollow portions 23, a portion above the processing liquid outlet chamber 23b is formed to be larger than the diameter of the electrode 30, and a seal is provided around the opening portion 23a facing the cylinder block 1. A part 24 is provided. When the cylinder block 1 is supported on the support block 22 as described above, the lower openings of the cylinders 1b of the cylinder block 1 and the hollow portions 23
And the sealing portion 24 seals between the upper surface of the support block 22 and the lower end surface (end surface on the head side) of the cylinder block 1 at the periphery 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 is formed in a net shape, for example, and in the plating process described later, the nickel pellets contained therein are melted according to the deposition of nickel in the circulating plating solution, so that the nickel in the plating solution is dissolved. It keeps the concentration.

The electrode 30 is mounted on the tip of a cylindrical holder 31 having substantially the same diameter as the electrode 30.
And into the hollow part 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 the base 21 of the processing apparatus main body 20 is connected to the operating shaft. 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 protruding into each of the cylinders 1b of the cylinder block 1 via a. On the other hand, when the air cylinder 32 in which the air pressure is discharged from the air cylinder 32 is stopped, the electrode 30 is stored in the support block 22.

When the air cylinder 32 is in operation, a certain 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. Channels 34 and 35 communicating with each other in the upper part are formed on the inside and inside, and the outside channel 34 is connected to the opening 23 a and the processing liquid outlet chamber 23.
b, it communicates with the processing liquid outlet passage 26.

As shown in FIG. 5, each holder 31 has an opening 31b opening to the processing liquid introduction chamber 23c when the air cylinder 32 is operated, and the holder 31 has the opening 31b through the opening 31b. A hollow portion 31a that connects the flow path 38 inside the electrode 30 and the processing liquid introduction chamber 23c is formed. The electrode 30 is electrically connected to a rectifier (not shown).

The auxiliary member 10 is connected to an operating shaft of an air cylinder 36 fixed above the plating section E via a flange or the like. It is configured to be moved up and down by being guided by the rod 37. More specifically, it rises and falls to a rising position retracted above the beam 6 and, as shown in FIG. 5, a descending position in contact with the upper part of the cylinder block 1 supported by the support block 22. .

The auxiliary member 10 includes the cylinders 1b
A sealing member inserted into an upper opening (crankcase-side opening) which is an opening opposite to the support block 22 side; 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 operating means have a structure as shown in FIG.

In the figure, an auxiliary member 10 has an air cylinder 42 and an obliquely downwardly projecting plate from a plate 41 corresponding to each cylinder 1 b of the cylinder block 1. And a cylindrical mounting member 43 reaching the vicinity of the upper opening of the cylinder 1b. The operating shaft of each air cylinder 42 passes through the inside of the plate 41 and the mounting member 43 and faces the vicinity of the upper opening of the cylinder 1b. Projecting 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. In the air tube 44, when the air is supplied to the inside and the diameter is compressed vertically, the outer periphery is in pressure contact with the inner peripheral surface of the cylinder 1b, and in the reduced diameter state where the air is not supplied to the inside, When the auxiliary member 10 is moved up and down, it does not come into contact with the inner wall surface or the like of the crankcase portion 1c.
Its size and shape are set.

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

Next, a description will be given of a surface treatment by the apparatus configured as described above with reference to FIG. Here, a case where the plating unit E performs the plating process on the cylinder block 1 in the above-described processing system will be described.

First, the cylinder block 1 is transported by the work transporting device 7 from the pre-process, that is, from the rinsing part Gd after the alumite treatment to the plating processing part E, and is placed on the support block 22 of the processing apparatus body 20 in the plating processing part E. Is done. At this time, the auxiliary member 10 is retracted above the beam 6,
Each electrode 30 of the processing apparatus main body 20 is housed in the support block 22 as shown in FIG. Thereby, in carrying-in work of the cylinder block 1, the auxiliary member 10 and the electrode 30 do not hinder the work. Also,
In the state shown in the figure, the opening 31b of the holder 31 does not face the processing solution introduction chamber 23c, and therefore, the supply of the plating solution into the holder 31 (hollow portion 31a) is stopped. I have.

When the cylinder block 1 is placed on the support block 22 as described above, the work transfer device 7 used to carry in the cylinder block 1 is moved to a predetermined retreat position, and as shown in FIG. As shown, the auxiliary member 10 is lowered. At this time, the supply of the pressurized air to each air tube 44 is shut off, and the auxiliary member 10 is completely lowered, so that the plate 41 contacts the upper part of the cylinder block 1 and the air The tubes 44 are inserted into the upper openings of the corresponding cylinders 1b (shown by the two-dot chain lines in FIG. 7). Then, while the pressurized air is supplied to the air tube 44,
The air cylinder 42 is operated, whereby the plate 48 is pulled up and the air tube 44 is compressed up and down as shown by the solid line in FIG.
Bulges outward, the outer periphery thereof 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 upper openings of the respective cylinders 1b are sealed, the respective air cylinders 3 of the processing apparatus body 20 are sealed.
2 is operated, and accordingly, the electrode 30 and the holder 31 are raised (advanced) as shown in FIG. 8C, and each electrode 30 is pushed into each cylinder 1b of the cylinder block 1. Then, when the opening 31b of each holder 31 faces the processing solution introduction chamber 23c, the supply and circulation of the plating solution are performed by the piping system shown in FIG.
0 is applied, whereby high-speed plating of the inner peripheral surface of each cylinder 1b of the cylinder block 1 is performed. That is, the plating solution sent from the processing solution supply pipe 12 into the processing solution introduction passage 27 in the support block 22 is treated by the processing solution introduction chamber 23c, the hollow portion 31a of the holder 31, the electrode 31 as shown by the arrow in FIG. A processing liquid collection pipe passes through a flow path 35 inside the cylinder 30, a flow path 34 from the upper part of the cylinder 1 b to the outer peripheral surface of the electrode 30 and the inner peripheral surface of the cylinder, the processing liquid outlet chamber 23 b and the processing liquid outlet passage 26. Flow to 13. Thus, 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 1 The plating process is performed favorably.

After the predetermined plating process is performed 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 section E by performing the reverse operation. Then, the workpiece is transported to the next step, that is, the washing section Ge, by the work transfer device 7.

The apparatus of the present invention can be applied not only to the plating section E but also to the preprocessing sections of the processing sections A to D. Here, the apparatus of the present invention is applied to these preprocessing sections. The structure in a case where the present invention is applied will be briefly described with reference to FIG.

Referring to FIG.
1 is provided with a plating block E
The configuration is the same as that of the support block 22 in FIG. That is, in the support block 52, a hollow portion 53 is formed corresponding to each cylinder 1b of the cylinder block 1, and the hollow portion 53 has a processing liquid outlet chamber 53b and a processing liquid introduction chamber 53b.
c, and these processing liquid outlet chambers 53b
A processing liquid outlet passage 56 and a processing liquid introduction passage 57 communicating with the processing liquid introduction chamber 53 c are formed in the support block 52.

A hollow rod 53 is fitted with a cylindrical rod 54 as a flow path component, and the rod 54 is connected to an operating shaft of an air cylinder 60. The rod 54 is connected to the electrode 3 in the plating section E.
The shape is substantially the same as the shape in which the air cylinder 60 and the holder 31 are integrated, and can move back and forth between a state housed in the support block 52 and a state protruding from the support block 52 in response to the operation of the air cylinder 60. It has become. As shown in the figure, when the cylinder block 1 is supported on the support block 52 and the air cylinder 32 is operated, the rod 54 protrudes into each cylinder 1b of the cylinder block 1 and After reaching the vicinity of the upper end, flow paths 58, 5 are formed inside and outside the rod 54 in the cylinder 1b.
9 are formed. The rod 54
When the air cylinder 32 is operated, an opening 54b is formed in the processing liquid introduction chamber 53c so that the inside of the rod 54 communicates with the processing liquid introduction chamber 53c.

When the processing is performed in the pre-processing section in which the processing apparatus main body 50 is configured 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. Be abutted.
The processing liquid sent to 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 formed by the rods 54 in each cylinder 1 b of the cylinder block 1. By the cylinder 1b
The flow of the processing liquid along the inner peripheral surface is obtained. This also speeds up various pre-processing.

As described above, in the surface treatment apparatus of the above embodiment, the electrode 30 as the flow path constituting member can be advanced and retracted 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-type engine, the surface treatment operation can be simultaneously performed on all the cylinders 1b. Therefore, the efficiency of the surface treatment operation can be improved.

According to the processing apparatus main body 20, the cylinder block 1 is supported by the support block 2 of the processing apparatus main body 20.
Since the electrode 30 is accommodated in the support block 22 as described above when mounting on the support block 2, there is an advantage that the cylinder block 1 can be transported while being held directly above the support block 22. That is, if the flow path component is always protruding from the work supporting portion, the workpiece is suspended and transported to a position sufficiently higher than the flow path component in order to avoid collision between the work and the flow path component. In addition, it is necessary to provide a transfer path for transferring the sheet while avoiding the flow path constituent members, and the design of the processing line imposes restrictions on the space above the processing apparatus main body and the transfer path of the work.
However, in the processing apparatus main body of the above embodiment, the flow path constituting member (electrode 30) can be housed in the support block 22 as described above, so that the above-described restriction is relaxed. In particular, when a cylinder block having a relatively long stroke of the cylinder is targeted, the amount of protrusion of the flow path constituent member increases in accordance with the stroke, and the space required above the processing apparatus main body also increases. In such a case, adopting the configuration of the present invention is effective in saving the space of the processing line.

Further, according to the apparatus of the above embodiment, if the cylinder block 1 is placed on the support block 22 and positioned, thereafter, each electrode 30 is automatically moved to the cylinder 1b.
The cylinder block 1 can be set in the processing apparatus main body 20 by an extremely easy operation. That is, when the flow path component is fixedly protruded, the work of placing the flow path component on the support block while inserting the flow path component into each cylinder of the cylinder block 1 in a state where the cylinder block is suspended is performed. Although required, in the apparatus of the above embodiment, the cylinder block can be accurately and quickly set in the processing apparatus without performing such unstable and careful work.
In particular, even if the work is a cylinder block of a V-type engine as in the present embodiment, the flow path constituting member (electrode 30) does not hinder the setting of the work, and the work can be set easily and quickly. Can be done.

In the apparatus of the above embodiment, the auxiliary member 10 is provided as described above, and the upper opening of each cylinder 1b of the cylinder block 1 is sealed by the air tube 44 as a seal member attached to the auxiliary member 10. Therefore, there is also an advantage that the structure of the electrode 30 as a flow path component can be simplified. That is, as a structure for sealing the upper opening of each cylinder 1b, a structure in which a sealing member is integrally provided at the upper end of the electrode 30 is also conceivable. However, as in the above-described embodiment, a nickel pellet for replenishment is stored in the electrode 30. If the device is further provided with a sealing member, the structure of the electrode 30 becomes complicated, and high rigidity is required, which is disadvantageous in terms of design or cost. However, by adopting a structure in which the electrode 30 and the seal member are separated as in the above-described embodiment, the above-described inconvenience can be avoided.

The above-described 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 a structure of the seal member in the auxiliary member 10, as shown in FIG. 10, an elastic seal member 49 formed of a substantially disc-shaped elastic material such as rubber is attached to the lower end of the mounting member 43. It does not matter. According to this configuration, the plate body 48 is pulled up by the operation of the air cylinder 42 from the state shown by the two-dot chain line in the same figure in which the elastic seal member 49 is inserted into the upper opening of the cylinder 1b, so that the elastic seal member 49 is formed. Are compressed vertically and bulge outward, and the outer periphery thereof is pressed against the inner peripheral surface of the cylinder 1b. In the configuration of FIG. 10 as well, a sealing effect for the upper opening of the cylinder 1b can be obtained as in the above embodiment. Moreover, according to this configuration, the structure for supplying the pressurized air to the air tube 44 as in the above embodiment (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 support, the flow path constituent members are held in a state of being retracted inside from the work support. Then, when the work is placed, the flow path constituent member protrudes and is made to enter 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 that is not closed by the work supporting portion is sealed by a seal member. Therefore,
As in the case where the flow path component is fixedly provided, there is no need to suspend the work to a sufficiently high position and place it on the work support to avoid collision between the workpiece and the flow path component,
Thereby, the space occupied by the device can be reduced. In addition, instability such as placing the work on the work support while inserting the flow path component into the cylindrical portion of the work,
In addition, since careful work is not required, the work of placing the work on the work supporting portion can be performed accurately and quickly, thereby improving work efficiency.
In particular, in this configuration, the processing device main body is provided with the V
While providing the flow path constituent member corresponding to the arrangement, angle and number of each cylinder of the cylinder block of the type engine, the auxiliary member is provided with a seal member corresponding to the arrangement, angle and number of each cylinder of the same cylinder block. Then, when the work is a cylinder block of a V-type engine, the set work and the like can be easily performed, and
Surface treatment can be applied simultaneously to all cylinders of a shaped engine.

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 retracted from this position, the work can be set on the work supporting portion. In this state, the auxiliary member is brought into contact with the work, and the sealing is performed by the seal member. When the work is loaded and unloaded, the auxiliary member is retracted.

Further, a seal member is attached to the auxiliary member so as to be located in the opening of each cylinder on the crankcase side, and a reduced diameter state capable of protruding into the opening and a pressure contact with the inner peripheral surface of the opening are provided. If it is provided so as to be freely expandable and contractable in the enlarged diameter state, it is possible to reliably seal the opening of the cylinder.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of an entire plating system to which an 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 of a plating system and each processing unit.

FIG. 4 is a diagram showing a piping system for high-speed plating in a plating 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 section.

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

FIG. 7 is an enlarged sectional view showing a portion of the work fixing means for sealing an upper opening of a cylinder of a cylinder block.

FIGS. 8A to 8C are schematic cross-sectional views illustrating a procedure for mounting a cylinder block on a 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 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 Processing liquid supply pipe 13 Processing liquid recovery pipe 20 Processing device main body 22 Support block 23, 31a Hollow part 23b Processing liquid discharge chamber 23c Processing liquid introduction chamber 26 Processing liquid discharge passage 27 Processing liquid introduction Passage 30 Electrode 31 Holder 32 Air cylinder 34,35 Flow path 44 Air tube

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) C25D 17/00 C25D 5/08 C25D 7/04 C25D 17/08

Claims (4)

(57) [Claims] 1. 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 and performing a surface treatment such as plating, wherein the treatment device is provided at a work processing location. In the main body, a work supporting portion that supports the work so as to close the opening on one side of the cylindrical portion, and a flow path configuration that can freely move between a position protruding from the surface of the work supporting portion and a position retracted inside. A workpiece is supported by the work supporting portion, and a flow path of the processing liquid is formed inside the cylindrical portion of the work in a state where the flow path component is held at the projecting position. At the same time, the processing liquid introduction passage and the processing liquid outlet passage connected to the processing liquid supply unit communicate with the flow path formed by the flow path constituent member, and are connected to an auxiliary member arranged to correspond to the work. , Work support of the cylindrical part A surface treatment device comprising a seal member inserted into an opening opposite to the side of the unit and sealing the opening. 2. The processing apparatus according to claim 1, wherein the workpiece is a cylinder block of a V-type engine in which at least one set of cylinders as a cylindrical portion has a predetermined angle and communicates with a crankcase portion. The above-mentioned flow path constituent members corresponding to the arrangement, the angle and the number of the cylinders of the block are provided, while the auxiliary members are provided with the seal members corresponding to the arrangement, the angle and the number of the cylinders of the cylinder block. The surface treatment apparatus according to claim 1, wherein: 3. The apparatus according to claim 1, wherein the auxiliary member is movably provided above the work supporting portion between a position where the auxiliary member contacts the work and a position where the auxiliary member is retracted from the position. The surface treatment apparatus as described in the above. 4. The seal member is attached to the auxiliary member so as to be located in an opening of each cylinder on the side of the crankcase, and has a reduced diameter state capable of protruding into the opening, and an inner periphery 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 able to expand and contract in a state where the diameter is increased to be in contact with the surface.