JPH1081995A - Sealing equipment in surface treatment equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] In a device for supplying a plating solution into a cylinder bore of a cylinder block and plating the peripheral surface of the cylinder bore, the cylinder bore can be sealed well.
In particular, even when the vicinity of the opening end of the cylinder bore on the side opposite to the head is narrow, the sealing of the cylinder bore is easily and reliably achieved. SOLUTION: An expandable and contractable seal member 3 is provided on an upper end of an electrode 17 protruding upward from a work supporting portion of a plating apparatus main body.
1 and seal unit 3 including seal holding member 33
0, and when the cylinder block 1 is installed on the work supporting portion with the head side facing down, the seal unit 30 protrudes into the cylinder bore 2 together with the electrode 17 from the head side, and a seal holding member is provided. The distal end of the rod 34 connected to 33 protrudes above the cylinder block 1. Then, the rod 3 is attached to the work fixing device.
Actuating means 50 for sealing which is detachably connected to the tip of 4
The seal operating member 50 operates the seal pressing member 33 via the rod 34 to expand the seal member 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing device for sealing a cylinder bore at the time of surface treatment, in which a cylinder block of an engine is used as a work and a peripheral surface of the cylinder bore is subjected to surface treatment such as plating. .

[0002]

2. Description of the Related Art Conventionally, as an apparatus for plating the peripheral surface of a cylinder bore of a cylinder block of an engine, a cylinder block is installed on a work supporting portion, electrodes are arranged in the cylinder bore, and an opening of the cylinder bore is closed. In a state in which the plating solution is supplied into the cylinder bore and the plating solution flows, a high current is applied between the electrode and the peripheral surface of the cylinder bore to perform electroplating at a high speed. (See, for example,
2589). In the pretreatment for plating and the like, it is considered that the surface treatment is efficiently performed by supplying and flowing a treatment liquid in the cylinder bore according to the plating treatment as described above. .

In this type of apparatus, as shown in the above-mentioned publication, the cylinder block is set on the work support with the head side facing down, so that the opening of the cylinder bore on the head side is supported by the work support. The plating solution and the like are supplied while the upper opening of the cylinder bore in this installation state is sealed with a lid or the like, and the upper side of the cylinder block in the above installation state is a crankcase. Because it has a complicated shape with
It is difficult to achieve the seal simply by covering the lid from above, and the plating solution may overflow.

For this reason, for example, Japanese Patent Application Laid-Open No.
As shown in the publication, a jig or the like connected to the cylinder block is provided with a seal member that can swell in the radial direction and a means for expanding the seal member, and the cylinder block is mounted on the work supporting portion. With the head side facing downward and the seal member inserted into the cylinder bore from above, the seal member is expanded and brought into close contact with the peripheral surface of the cylinder bore, thereby opening the upper opening of the cylinder bore. 2. Description of the Related Art Structures for sealing are known.

[0005]

Incidentally, the opening end of the cylinder block on the side opposite to the head (crankcase side) of the cylinder bore may be narrowed due to the provision of an edge projecting inward. When such a cylinder block is used as a work to seal during plating or the like, when the seal member is inserted from the crankcase side into the cylinder bore, the narrowed portion becomes an obstacle and can pass through this portion. If the diameter of the seal member is reduced as described above, there is a problem that it is difficult to secure an expansion allowance for achieving the seal.

Therefore, as shown in the above-mentioned Japanese Patent Application Laid-Open No. Hei 7-118891, a seal member is attached to the upper end of an electrode or the like, and the cylinder block is placed on the work supporting portion with the head side downward. It has been considered that a sealing member is inserted into the cylinder bore from the head side at the time of installation. In this case, in order to further enhance the workability for sealing and the reliability of the sealing, an improvement has been made. There is room to do it.

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention provides an apparatus that uses a cylinder block of an engine as a workpiece, supplies a processing liquid into the cylinder bore, and performs a surface treatment such as plating on the peripheral surface of the cylinder bore. In particular, an object of the present invention is to provide a sealing device that can easily and reliably achieve sealing of a cylinder bore even when the vicinity of an opening end on the side opposite to the head of the cylinder bore is narrow. And

[0008]

According to a first aspect of the present invention, there is provided a work apparatus for supporting a work made up of a cylinder block of an engine on a main body of a processing apparatus, with a head side of the work being directed downward. A support part, a flow path component that enters the cylinder bore of the work in a state where the work is supported by the work support part and forms a flow path of the processing liquid, and a flow path that is formed in the cylinder bore by the flow path constituent member. A path for introducing a processing liquid from a processing liquid supply unit in the path, and a work fixing device for fixing the work on a work support unit disposed above the processing apparatus main body; A seal member that can be radially expanded and contracted, a seal pressing member that expands in the radial direction by pressing the seal member in the vertical direction, A seal unit having a rod connected to a holding member and extending upward, wherein the seal unit protrudes from the head side into the cylinder bore when the work is supported on the work support portion, and a tip of the rod is provided. Are configured to protrude above the work, and the work fixing device is provided with sealing operating means detachably connected to the upper end of the rod and operating a seal holding member via the rod. It is.

According to this structure, as the cylinder block is placed on the work supporting portion with the head side facing down, the seal unit protrudes into the cylinder bore from the head side and the opening on the side opposite to the head side. The vicinity is reached, and furthermore, the cylinder block is fixed by the fixing device, and the seal pressing member is operated via the rod by the seal operating means provided in the fixing device, so that the seal is easily and reliably performed. Achieved.

According to a second aspect of the present invention, there is provided a work supporting portion for supporting a work composed of a cylinder block of an engine in a state where a head side thereof is directed downward, and a work supporting state by the work support portion. And a passage for introducing a treatment liquid from a treatment liquid supply unit into a passage formed in the cylinder bore by the passage constituent member which protrudes into the cylinder bore and constitutes a passage for the treatment liquid. In the surface treatment apparatus provided, a seal having a seal member capable of expanding and contracting in a radial direction and a seal pressing member that expands in a radial direction by pressing the seal member in a vertical direction at an upper end of the flow path component member. The seal unit is provided with a unit so that the seal unit protrudes from the head side into the cylinder bore when the work is supported on the work supporting portion. In the seal unit, a pushed portion is provided which comes into contact with the inner peripheral edge of the cylinder bore end on the side opposite to the head when the seal unit protrudes into the cylinder bore of the work on the work supporting portion, and the pushed portion is the cylinder bore. The seal member is pressed by the seal pressing member and expanded in the radial direction when pressed against the inner peripheral edge of the end.

According to this structure, as the cylinder block is mounted on the work supporting portion with the head side facing downward, the seal unit protrudes into the cylinder bore from the head side, and the opening end opposite to the head side. When we reach the neighborhood,
Sealing is easily and reliably achieved by expanding the seal member as the pressed portion is pressed against the edge of the cylinder bore end.

In the structure described in claim 1 or 2, it is preferable that the seal member is formed of an elastic material into a shape of a hollow truncated cone (claim 3). According to such a seal member, when the seal member is pressed by the seal pressing member, the seal member expands in an umbrella shape, and securely adheres to the cylinder bore peripheral surface.

In the surface treatment apparatus to which the structure of the present invention is applied, for example, plating is performed on the peripheral surface of the cylinder bore of the work as a surface treatment, and the flow path constituting member also serves as a plating electrode. (Claim 4). In this case, the flow path component has an inner cylinder and an outer cylinder, and a plating material storage section is formed between the two pipes, and the seal unit covers the plating material storage section in a state where the plating material storage section is covered. Is detachably attached to the upper end of the housing (claim 5)
Is preferred. In this case, the seal unit also functions as the lid of the plating material storage section.

According to a sixth aspect of the present invention, there is provided a work supporting portion for supporting a work made up of a cylinder block of an engine in a state in which a head side thereof is directed downward, and a work supporting state of the work support portion. And a flow path component that protrudes into the cylinder bore of the work and configures a flow path of the processing liquid, and the processing liquid is introduced from the processing liquid supply unit into the flow path formed in the cylinder bore by the flow path configuration member. In a surface treatment device provided with a passage, a seal unit for sealing the cylinder bore, a seal mounting portion disposed on a side of the processing device main body, and a work movable between the seal mounting portion and the processing device main body. A transfer device, wherein the seal unit includes a seal member that can be expanded and contracted in a radial direction, and a radial member A seal holding member to be expanded and a rod connected to the seal holding member and extending upward, the seal mounting portion is provided on a base on which the work can be placed, and provided on the base. And a seal unit supporting portion that supports the seal unit and projects from the head side into the cylinder bore when the work is placed on the base, and the work transfer device holds the work. It has a work holding means, and a sealing operating means detachably connected to an upper end of a rod of the seal unit and operating the seal pressing member via the rod.

According to this structure, the work is transferred to the plating apparatus main body by the transfer device after the seal unit is mounted on the work formed of the cylinder block in the seal mounting portion. Also in this structure, the seal unit is inserted into the cylinder bore of the work from the head side in the seal mounting section, so that the seal unit can be easily mounted on the work and the sealing operation provided in the transfer device. By the operation of the means, a seal is easily and reliably achieved.

[0016]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of a surface treatment apparatus having a sealing device of the present invention, and FIG. 2 shows a sealing device. In the figure, a plating apparatus is shown as a surface treatment apparatus, and this plating apparatus uses a cylinder block 1 of an engine as a work and performs plating of nickel or the like on a peripheral surface of a cylinder bore 2 of the engine. The illustrated work is a cylinder block 1 of a four-cylinder engine and has four cylinder bores 2. One end of each of the cylinder bores 2 opens to the end face on the head side of the cylinder block 1, and the other end of the cylinder bore 2. Is open in the space 3 on the crankcase side of the cylinder block 1. In addition, an inner peripheral edge portion 4 that protrudes inward is formed at an opening of the cylinder bore 2 on the crankcase side.

The cylinder block 1 is conveyed by a work conveying means (not shown), and is sent to a plating apparatus through pretreatment by various pretreatment devices. In the plating apparatus, the cylinder block 1 is placed on the plating apparatus main body (processing apparatus main body) 10, and the cylinder block 1 is pressed and fixed from above by the work fixing device 40, and the peripheral surface of the cylinder bore 2 is fixed. And high-speed plating is performed by flowing a high current while flowing a plating solution. The specific structure of the plating apparatus is as follows.

A support block 12 is provided on a base 11 of the plating apparatus main body 10, and a work support portion 13 is formed on an upper end of the support block 12.
A state in which the cylinder block 1 is directed upward with the head side downward (a state in which the cylinder block 1 is turned upside down compared to a state in which the cylinder block 1 is mounted on a vehicle).
, And the head side opening of each cylinder bore 2 is closed by the work support 13.

Below the work supporting portion 13 in the plating apparatus main body 10, there is formed a passage 14 for plating solution circulation extending in the lateral direction (the same direction as the cylinder row direction). The work support portion 13 is provided with an opening 15 communicating with the passage 14 at a position corresponding to each of the cylinder bores 2 of the cylinder block 1, and a seal portion 16 provided therearound. In the state where the cylinder block 1 is supported as described above, the opening on the head side of each cylinder bore 2 and the opening 15 coincide with each other.
3 and the lower end surface (end surface on the head side) of the cylinder block 1 is sealed.

Further, the plating apparatus body 10 is provided with electrodes 17 which also serve as flow path constituent members at positions corresponding to the respective cylinder bores 2 of the cylinder block 1. The electrode 17 has an inner cylindrical portion 18 made of a metal pipe and an outer cylindrical portion 19 made of a porous metal plate.
A pellet accommodating portion (plating material accommodating portion) 20 is formed in between, and a number of pellets 21 made of nickel as a plating material are accommodated in the pellet accommodating portion 20.

The electrode 17 is mounted on a holder 22 mounted on the base 11 via a cylindrical mounting member 23, penetrates the passage 14 and protrudes upward from the opening 15. When the cylinder block 1 is supported by the work supporting portion 13 as described above, the electrode 17 protrudes from the head side into each of the cylinder bores 2 of the cylinder block 1, and the upper end of the electrode 17 is positioned at the upper opening of the cylinder bore 2. , And a constant gap is maintained between the outer peripheral surface of the electrode 17 and the peripheral surface of the cylinder bore 2. Thereby, in each cylinder bore 2 of the cylinder block 1, the flow paths 24, 25 communicating with each other on the upper side are formed inside the inner cylindrical portion 18 of the electrode 17 and outside the outer cylindrical portion 19.
Is formed, and the outer flow path 25 is
It is designed to communicate with

The holder 22 and the mounting member 2
3, a passage 2 for plating solution introduction penetrating vertically.
6 is formed, and the inner cylindrical portion 1 of the electrode 17 is formed in the passage 26.
The flow path 24 inside 8 communicates. A plating solution introduction pipe 27 communicating with the passage 26 is connected to a lower portion of the base 11.

A plating solution supply / discharge system for the plating apparatus main body 10 is not shown, but the plating solution is supplied from a plating solution storage tank through a pump, a plating solution supply pipe, and the like.
After being fed into the passage 26 from the plating solution introduction pipe 27 and passing through the flow paths 24 and 25, the plating solution is recovered from the passage 14 to the plating solution storage tank via the plating solution recovery pipe. Although the electrical system is not shown, the electrode 17 is connected to the positive side of the power supply circuit, while the cylinder block 1 is connected to the negative side of the power supply circuit. A voltage is applied between them.

As a sealing device in the plating apparatus, a sealing unit 30 is provided at the upper end of the electrode 17 and a work operating device 50 is provided in the work fixing device 40.

The seal unit 30 includes a seal member 31 attached to a lower end of a seal holding member 32, a seal pressing member 33 located below the seal member 31,
A rod 34 connected to the seal holding member 33 and a plate member 3 attached below the seal holding member 33
5 is provided.

The sealing member 31 is formed in a hollow frustoconical shape with an elastic material such as rubber, and metal pieces 31a are attached to the surface thereof at predetermined circumferential intervals. And
The upper end edge of the seal member 31 is fixed to the lower end of the seal holding member 32 by a fixture 36 so that the lower end side can be expanded and contracted like an umbrella. The seal holding member 32 includes:
It is formed in a cylindrical shape having a through hole 37 for rod insertion at the center.

The seal pressing member 33 has a substantially disk shape and has an annular protrusion 33a on the upper surface of a peripheral portion. The protrusion 33a faces the lower end of the seal member 31. The lower end of a rod 34 is connected to the center of the seal holding member 33. The rod 34 passes through the through hole 37 of the seal holding member 32 and the upper end protrudes above the seal holding member 32. At the upper end portion, a gripped portion 34a having a stepped diameter is provided.

The plate member 35 serves also as a supported portion for the electrode 17 and a lid for the pellet accommodating portion 20 of the electrode 17, and is fixed to the seal holding member 33 with bolts or the like. In the normal state, the outer cylindrical portion 1 of the electrode 17 is
9, a plate member 35 is provided on the support portion 38 provided at the upper end portion.
Is installed, the seal unit 3 is attached to the electrode 17.
0 is supported. Further, when the cylinder block 1 is mounted on the work supporting portion 13 of the plating apparatus main body 10, the seal unit 30 protrudes into the cylinder bore 2 together with the electrode 17 from the head side, and is located near the upper opening of the cylinder bore 2. In this state, the size of each member of the seal unit 30 is set such that the upper end of the seal holding member 32 is substantially the same height as the upper end of the cylinder block 1 in this state.

On the other hand, the work fixing device 40 is provided with a predetermined operation position above the plating apparatus main body 10 and for carrying in and out of the work.
A frame 41 that can be moved over a retreat position so as not to hinder carrying-out, a driving means (not shown) for driving the frame 41, and a vertically movable unit provided below the frame 41 via a guide 42. Movable plate 4
3 and a cylinder 44 for driving the movable plate 43
And a work holding plate 46 connected below the movable plate 43 via a connecting rod 45.

A rod insertion hole 47 having a diameter larger than that of the rod 34 and smaller than the seal holding member 32 is formed in the work holding plate 46 at a position corresponding to the rod 34 of the seal unit 30. The work fixing device 40 further includes a clamp member 51 detachably connected to the upper end of the rod 34,
There is provided a seal operating means 50 constituted by an air cylinder 52 for raising and lowering the air cylinder 1. The clamp member 5
1 has a pair of left and right gripping pieces 51a that are operated in the contact and separation directions by a clamp cylinder 51b, is located above the work holding plate 46, is attached to the movable plate 43 so as to be able to move up and down, and The air cylinder 52 moves up and down within a range between a predetermined lowering position and a predetermined raising position that are close to each other.

The operation of the plating apparatus provided with such a sealing device of the present embodiment will be described below.

At the time of plating, first, the cylinder block 1 transported to the plating section by the workpiece transport means.
Is placed on the work supporting portion 13 of the plating apparatus main body 10 with the head side facing downward. At this time, as described above, the electrode 17 protruding above the work supporting portion 13 and the seal unit 30 provided at the upper end of the electrode 17 protrude into the cylinder bore 2 from the head side, and the rod 34 protrudes above the cylinder block 1. It will be in the state of having done.

Next, after the work fixing device 40 is moved from the retracted position to a predetermined operation position above the plating apparatus main body 10, the movable plate 43 and the work holding plate 46 are lowered by driving the cylinder 44, and the work holding plate 46 is moved. Reference numeral 46 contacts the upper end of the cylinder block 1 to fix the cylinder block 1. At this time, the tip of the rod 34 projects upward through the rod insertion hole 47 of the work holding plate 46, and the upper end of the seal holding member 32 comes into contact with the work holding plate 46.

In this state, the seal operating means 50 provided on the work fixing device 40 is operated. That is, the pair of gripping pieces 51a are operated by the clamp cylinder 51b in a state where the clamp member 51 is at the predetermined lowering position, thereby gripping the gripped portion 34a at the tip of the rod 34, and then clamped by the air cylinder 52. The member 34 is operated to a predetermined raised position. As a result, FIG.
As shown by a two-dot chain line, the seal holding member 33 is lifted up via the rod 34, and accordingly, the seal member 31 is pressed by the seal holding member 33 to expand radially outward, and the peripheral portion thereof is opened. Are in close contact with the peripheral surface of the cylinder bore 2.

Thus, sealing of the end of the cylinder bore 2 on the side of the crankcase is achieved. In particular, the seal unit 30 is previously mounted on the electrode 17 so that the work support 13
When installing the cylinder block 1 on the top, the seal unit 3
0 is inserted into the cylinder bore 2 from the head side, so that it is difficult to insert the sealing member from the crankcase side due to the narrow opening of the cylinder bore 2 on the crankcase side. There is no. In addition, after the seal unit 30 is inserted, the sealing of the cylinder bore 2 is satisfactorily performed by the operation of the seal operating means 50 provided in the work fixing device 40.

After the sealing is completed, a plating solution fed by a pump (not shown) is introduced into the cylinder bore 2 from a plating solution introduction passage 26, and the flow passages 24, 25 are indicated by broken arrows in FIG. The plating solution is circulated to the plating solution supply side through the passage 14, and the plating solution is caused to flow, and a voltage is applied between the cylinder bore 2 and the electrode 17, so that high-speed plating is performed on the peripheral surface of the cylinder bore 2. Is done. In this case, since the sealing of the cylinder bore 2 is performed well as described above, the plating solution
Is reliably prevented from leaking outside.

FIG. 3 shows a second embodiment. Also in this embodiment, the seal unit 60 is provided at the upper end of the electrode 17 provided in the plating apparatus main body, but does not have the seal operating means 50 provided in the work fixing device 40 in the first embodiment. Instead, at the upper end of the periphery of the seal holding member 62 in the seal unit 60,
When the cylinder block 1 is installed, a pushed portion 62a that comes into contact with the inner peripheral edge portion 4 of the cylinder bore end is provided.

That is, the seal holding member 62 located above the seal unit 60 is formed in a plate shape having a predetermined thickness slightly smaller than the diameter of the cylinder bore 2. Is the mounting fixture 66
It is fixed by. Further, a plate member 6 is provided on the lower surface side of the seal pressing member 63 located below the seal member 61.
The plate member 65 and the seal holding member 63 are fixed to the inner cylinder while the annular fitting portion 65a provided on the lower surface of the plate member 65 is fitted to the upper end of the inner cylinder portion 18 of the electrode 17. While a short rod 64 supported by the portion 18 and connected to the seal holding member 63 is inserted through the through hole 67 provided in the seal holding member 62 and the mounting fixture 66, the seal is placed on the seal holding member 63. The member 61 and the seal holding member 62 are mounted so as to be able to move up and down.

As will be described later in detail, when the cylinder block 1 is mounted on the plating apparatus main body and the seal unit 60 protrudes into the cylinder bore 2, the inner peripheral edge of the cylinder bore end on the crankcase side (opposite the head side). The seal holding member 6 is positioned so that the upper end peripheral portion of the seal holding member 62 abuts on the portion 4 and this portion becomes the pushed portion 62a.
2, a height position and the like are set.

According to this embodiment, when plating, the cylinder 17 is mounted on the electrode 17 and its upper end as the cylinder block 1 is lowered from above onto the work supporting portion of the plating apparatus main body with the head side facing downward. The sealed unit 60 protrudes into the cylinder bore 2 from the head side, and the seal unit 60 is positioned near the end of the cylinder bore 2 on the crankcase side, but immediately before the cylinder block 1 is installed on the work support. As shown by the solid line in FIG. 3, the inner peripheral edge 4 of the cylinder bore 2 on the crankcase side contacts the pushed portion 62 a at the upper end of the seal holding member 62. Then, when the cylinder block 1 further descends from this state to reach a state where the cylinder block 1 is installed on the work supporting portion,
As shown by a two-dot chain line in FIG.
Further, the seal member 61 attached thereto is pushed down, the lower end of the seal member 61 is pressed against the seal pressing member 63 and is expanded radially outward, and its peripheral portion is in close contact with the peripheral surface of the cylinder bore 2.

Thus, also in this embodiment, the sealing of the cylinder bore 2 is easily and reliably achieved.

FIG. 4 shows a third embodiment. This embodiment corresponds to a modification of the second embodiment, in which a seal unit 60 is provided at the upper end of an electrode 17 provided in the plating apparatus main body.
Are a seal holding member 62, a seal member 61 whose upper end is fixed to the seal holding member 62 by a fixture, a seal pressing member 63 located below the seal holding member 62, and a rod 64 connected to the seal pressing member 63. And a plate member 65 fixed to the lower surface side of the seal pressing member 63 and the like, and the upper end peripheral portion of the seal holding member 62 is a pressed portion 62a in the same manner as the second embodiment. is there.

In this embodiment, in order to increase the support strength of the seal unit 60, a support 68 is provided at the center of the electrode 17, and a plate member 65 at the lower end of the seal unit 60 is detachably attached to the upper end of the support 68. It is fitted. Note that the lower end of the support 68 is fixed to a support block of the plating apparatus main body.

Also in this embodiment, when the cylinder block 1 is placed on the work supporting portion of the plating apparatus main body with the head side facing down, the seal unit 60 protrudes into the cylinder bore 2 and The inner peripheral edge portion 4 of the cylinder bore 2 on the crankcase side contacts the pushed portion 62a at the upper end of the seal holding member 62 and pushes it down, whereby the seal member 61 expands and sealing is achieved.
In this case, since the seal unit 60 is supported by the column 68 against the force applied from the inner peripheral edge of the cylinder bore 2, a large amount is not applied to the electrode 17, and the reliability and durability of the electrode 17 are improved. Can be

FIG. 5 shows a fourth embodiment. In this embodiment, the seal unit 70 includes a fixed-side seal pressing member 73 connected via a column 72 above a plate member 71 detachably fitted to the upper end of the inner cylindrical portion 18 of the electrode 17, A movable-side seal pressing member 74 that is vertically movably fitted to the fixed-side seal pressing member 73; and a seal member 75 that is an O-ring sandwiched from above and below by the peripheral portions of the two seal pressing members 73 and 74; It has. The periphery of the upper end of the movable-side seal pressing member 74 is a pushed portion 74a. When the cylinder block 1 is mounted on the plating apparatus main body and the seal unit 70 protrudes into the cylinder bore 2, the crankcase The pushed portion 74a is set so as to abut the inner peripheral edge of the cylinder bore 2 on the side (opposite the head side).

Also in this embodiment, when the cylinder block 1 is placed on the work supporting portion of the plating apparatus main body with the head side facing down, the seal unit 70 protrudes into the cylinder bore 2 and The inner peripheral edge portion 4 of the cylinder bore 2 on the side of the crankcase is the movable seal holding member 7.
The movable-side seal pressing member 74 is pressed down by abutting against the pressed portion 74a at the upper end of 4. As a result, the seal member 75 made of an O-ring is compressed up and down, whereby the seal member 75 swells outward and comes into close contact with the peripheral surface of the cylinder bore 2 to achieve sealing.

FIGS. 6 to 8 show a fifth embodiment. In this embodiment, a seal mounting portion is arranged on the side of the plating apparatus main body, and the seal unit is mounted on and removed from the cylinder block by the seal mounting portion.

That is, the plating system shown in FIG. 6 has various pre-processing units A1, A2... For degreasing, alkali etching, mixed acid etching, alumite, etc., and a plating unit B. Are provided with a plating apparatus main body 10 and a seal mounting section 80. The pre-processing sections A1, A2,... And the seal mounting section 80 are arranged along the direction of the transport line (arrow a). Equipment body 1 on the side of the transport line adjacent to
0 is located. Then, the work (cylinder block) is conveyed to the seal mounting section 80 via the pre-processing sections A1, A2,.
0, the mounting of the seal unit is performed, and then the work is moved to the plating apparatus main body 10 as shown by the arrow b by the transfer device described below.
After the plating, the seal unit is returned to the seal mounting unit 80, and the detachment of the seal unit and the transfer of the work to the subsequent stage are performed.

As shown in FIGS. 7 and 8, the seal mounting portions 80 are provided at a plurality of positions corresponding to the respective cylinder bores 2 of the cylinder block 1 and a base 81 on which the cylinder block 1 can be mounted. And a seal unit supporting portion 82 projecting upward from the base 81, and the seal unit 30 is supported by each seal unit supporting portion 82 in advance. The seal unit 30 includes a seal member 31, a seal holding member 32, a seal holding member 33, a rod 34, a plate member 35, and the like, which can be radially expanded and contracted, as in the first embodiment. Has an upper end projecting upward.

The cylinder block 1 is mounted on the base 81 directly or via a work receiving table 83 as shown in the figure. The illustrated work receiving table 83 is transported together with the cylinder block 1 over the seal mounting section 80 and the plating apparatus main body 10, and includes a cylinder bore 2.
And a clamp shaft 83b at both ends.
3 is placed on the base 81, and the cylinder block 1 is placed on the work receiving table 83 with the head side facing down.

With the work receiving table 83 and the cylinder block 1 placed on the base 81, the seal unit support portion 82 and the seal unit 30 supported by the seal unit support portion 82 protrude into the cylinder bore 2. The arrangement, dimensions, and the like of the seal unit supporting portion 82 are set so that the seal unit 30 is located near the end of the cylinder bore 2 on the crank side.

A work transfer device 85 is provided above the plating section where the plating apparatus body 10 and the seal mounting section 80 are provided. The work transfer device 85 includes a frame 86 movable over the seal mounting portion 80 and the plating apparatus main body 10, a driving unit (not shown) for driving the frame 86, and a guide 87 below the frame 86. A movable plate 88 provided to be movable up and down, and a cylinder 8 for driving the movable plate 88
9 and a work holding plate 91 connected below the movable plate 88 via a connecting rod 90.

Further, the work transfer device 90 is provided with work holding means and seal operating means 95.

The work holding means comprises shaft clamp cylinders 93 provided at both ends of a work holding plate 91. By clamping the clamp shaft 83b with the shaft clamp cylinders 93,
The cylinder block 1 can be held via the work support 83. It should be noted that a work clamp cylinder for directly clamping the cylinder block 1 may be provided instead of the shaft clamp cylinder 93. In this case, the clamp shaft 83b and the work support 83 are unnecessary.

The sealing operating means 95 is operated by a clamp cylinder 96a and is detachably attached to the upper end of the rod 34, similarly to the sealing operating means 50 provided in the work fixing device 40 in the first embodiment. It is composed of a clamp member 96 to be connected, and an air cylinder 97 that moves the clamp member 96 up and down.

Further, a pellet supply device 100 is attached to the work transfer device 85. The pellet replenishing apparatus 100 is for replenishing pellets such as nickel into a pellet storage section 20 formed on the electrode 17 of the plating apparatus main body 10, and includes a feeder 101 for sending out pellets 21, The apparatus includes a pellet supply pipe 102 led out of 101, and an openable / closable pellet discharge section 103 provided at the tip of the pellet supply pipe 102. The structure of the plating apparatus main body 10 and the electrodes 17 and the like provided thereon are the same as those in the first embodiment.

According to the above-described embodiment, during the plating process, first, the cylinder block 1 is moved to the work pedestal 8.
3 is placed on the seal mounting portion 80 together with
The seal unit 30 previously supported by the seal unit support portion 82 is inserted into the cylinder bore 2 from the head side. Next, the work transfer device 85 is disposed on the cylinder block 1 and the movable plate 88 is lowered to a state where the movable plate 88 contacts the upper end of the cylinder block 1.
Further, when the shaft clamp cylinder 93 and the seal operating means 95 are operated, the cylinder block 1 is operated.
These are collectively held in the work transfer device 85 in a state where the seal unit 30 is mounted on the work transfer device 85.

Then, the work transfer device 85 is moved onto the plating apparatus main body 10, and the cylinder block 1 on which the seal unit 30 is mounted is set on the plating apparatus main body 10. Then, high-speed plating is performed in a state where the cylinder bore 2 of the cylinder block 1 is sealed by the seal member 31 of the seal unit 30. After the plating process, the work transfer device 85 moves onto the seal mounting section 80, and the cylinder block 1 and the seal unit 30 are separated from the work transfer device 85 by a procedure reverse to that when the seal unit is mounted, and the seal for the cylinder block 1 is sealed. Unit 3
0 is removed and the cylinder block 1 is carried out.

Thus, also in the present embodiment, the sealing of the cylinder bore 2 is easily and reliably achieved. Further, according to the sealing device of the present embodiment, the sealing unit 30 is removed from the plating device main body 10 except at the time of plating, which is convenient for replenishment of the pellets 21 to the pellet storage portion 20 of the electrode 17 and the like. That is, when the pellets 21 in the pellet storage section 20 are consumed and decreased, the pellets 21 are supplied to the pellet storage section 20 from above by the pellet replenishing device 100 at an appropriate time after the plating is completed. When the seal unit 30 is provided at the upper end of the electrode 17 as in the first to fourth embodiments, the operation of removing the seal unit 30 is required.
According to this embodiment, the seal unit 30 is not used except during plating.
Is removed from the plating apparatus main body 10 and the upper end of the pellet accommodating portion 20 of the electrode 17 is open.
1 can be easily supplied.

In each of the above embodiments, the structure of the present invention is applied to a plating apparatus. However, the present invention may be applied to a pretreatment apparatus that performs various plating pretreatments, and may be applied to a pretreatment apparatus that does not require electrodes. When applied, a simple tubular flow path component may be provided so as to protrude from the work support in place of the electrode. In addition, the specific structure of each part may be changed in design without departing from the gist of the present invention.

[0061]

According to the first aspect of the present invention, a work comprising a cylinder block is supported by a work support provided on a main body of a processing apparatus with a head side of the work facing downward. In addition to providing a flow path constituent member that forms a flow path of the processing liquid, and providing a seal unit at the upper end of the flow path constituent member, when the work is installed on the work supporting portion, the seal unit together with the flow path constituent member The seal unit can be inserted into the cylinder bore from the head side, and the seal unit can be easily inserted into the cylinder bore even when the opening on the head side opposite to the cylinder bore is narrow. Moreover, in a state where the seal member of the seal unit and the seal holding member are located in the cylinder bore of the work set in the work supporting portion, the tip of the rod connected to the seal holding member projects above the work, and the work is fixed. Since the seal holding member is operated via the rod by the seal operating means provided in the apparatus, the sealing of the peripheral surface of the cylinder bore by the seal member can be performed easily and reliably.

According to a second aspect of the present invention, a work comprising a cylinder block is supported by a work support provided on a main body of the processing apparatus with the head side of the work facing downward.
And, while providing a flow path component constituting a flow path of the processing liquid in the cylinder bore of the work, a seal unit is provided at the upper end of the flow path component, the seal unit has a seal member, a seal pressing member and When the work is installed on the work supporting portion, the seal unit protrudes into the cylinder bore, and the pushed portion comes into contact with the inner peripheral edge of the cylinder bore end on the opposite side of the head to push the work. The seal member is expanded by being moved. Therefore, according to the present invention, the sealing unit can be easily inserted into the cylinder bore, and the peripheral surface of the cylinder bore can be easily and reliably sealed.

According to a sixth aspect of the present invention, a seal mounting portion is disposed on a side of the processing apparatus main body, and a seal unit is inserted from the head side into a cylinder bore of a work made up of a cylinder block in the seal mounting portion. In addition, the work transfer device movable between the seal mounting portion and the processing apparatus main body is provided with a work holding means and a seal operating means, and the seal transfer device allows the work to be performed between the seal mounting portion and the processing apparatus main body. The transfer of the work and the seal unit and the operation of the seal unit are performed. Therefore, according to the present invention, the seal unit can be easily inserted into the cylinder bore, and the peripheral surface of the cylinder bore can be easily and reliably sealed.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an entire plating apparatus including a sealing device according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing a main part of a sealing device in the plating apparatus.

FIG. 3 is an enlarged sectional view showing a main part of a sealing device according to a second embodiment.

FIG. 4 is an enlarged sectional view showing a main part of a sealing device according to a third embodiment.

FIG. 5 is an enlarged sectional view showing a main part of a sealing device according to a fourth embodiment.

FIG. 6 is an explanatory diagram of an entire plating system including a sealing device according to a fifth embodiment.

FIG. 7 is a sectional front view of a seal mounting portion according to a fifth embodiment.

FIG. 8 is a sectional side view of a seal mounting portion and a plating apparatus main body according to a fifth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylinder block 2 Cylinder bore 10 Plating apparatus main body 13 Work support part 17 Electrode (flow path constituent member) 30, 60, 70 Seal unit 31, 61, 75 Seal member 33, 63, 73 Seal holding member 34 Rod 40 Work fixing device 50 Sealing operating means 80 Seal mounting section 81 Base 62 Seal unit support section 85 Work transfer device 85 Sealing operating means

Claims (6)

[Claims] 1. A work supporting portion for supporting a work made up of a cylinder block of an engine in a state in which a head side thereof is directed downward, into a main body of a processing apparatus, and the work is inserted into a cylinder bore of the work while the work is supported by the work support portion. A flow path constituent member that forms a flow path of the processing liquid, and a path for introducing the processing liquid from the processing liquid supply unit to a flow path formed in the cylinder bore by the flow path constituent member,
In a surface treatment apparatus in which a work fixing device for fixing the work on a work support portion is disposed above the processing apparatus main body, a seal member capable of expanding and contracting in a radial direction is provided at an upper end of the flow path component member, A seal unit having a seal pressing member that expands in the radial direction by pressing the member vertically and a rod that is connected to the seal pressing member and extends upward are provided, and the work is supported on the work supporting portion. When the seal unit is inserted into the cylinder bore from the head side and the tip of the rod projects above the work, the seal unit is detachably connected to the upper end of the rod to the work fixing device. And a seal operating means for operating a seal pressing member via the rod. Lumpur apparatus. 2. A processing support body for supporting a work made up of a cylinder block of an engine in a state in which a head side is directed downward into a processing apparatus main body; In a surface treatment apparatus provided with a flow path component constituting a liquid flow path and a path for introducing a processing liquid from a processing liquid supply unit to a flow path formed in the cylinder bore by the flow path component,
At the upper end of the flow path constituent member, a seal unit having a seal member that can expand and contract in the radial direction and a seal pressing member that expands in the radial direction by pressing the seal member in the vertical direction is provided, and When the seal unit is supported on the work supporting portion, the seal unit protrudes from the head side into the cylinder bore, and the seal unit protrudes into the cylinder bore of the work on the work supporting portion. In this state, a pressed portion is provided which abuts on the inner peripheral edge of the cylinder bore end on the opposite side of the head, and the pressed member is pressed against the inner peripheral edge of the cylinder bore end so that the seal member is pressed by the seal pressing member and the diameter is reduced. A sealing device in a surface treatment device, which is configured to expand in a direction. 3. The sealing device according to claim 1, wherein the sealing member is formed of a resilient material into a shape of a hollow truncated cone. 4. The method according to claim 1, wherein plating is performed on a peripheral surface of the cylinder bore of the work as a surface treatment, and the flow path component also serves as a plating electrode. A sealing device in the surface treatment device according to 1. 5. The flow path forming member has an inner cylinder and an outer cylinder, and a plating material storage portion is formed between the two cylinders, and the seal unit covers the plating material storage portion in a state of covering the plating material storage portion. The sealing device according to claim 4, wherein the sealing device is detachably attached to an upper end of the component member. 6. A work supporting portion for supporting a work made up of a cylinder block of an engine in a state in which a head side thereof is directed downward, into a main body of the processing apparatus, and the work is inserted into a cylinder bore of the work while the work is supported by the work support portion. A surface treatment apparatus having a flow path component for forming a flow path of a processing liquid and a path for introducing a processing liquid from a processing liquid supply unit to a flow path formed in the cylinder bore by the flow path configuration member , A seal unit for sealing the cylinder bore, a seal mounting portion disposed on a side of the processing device main body, and a work transfer device movable between the seal mounting portion and the processing device main body; The unit includes a seal member that can expand and contract in the radial direction, and a seal pressing member that expands in the radial direction by pressing the seal member in the vertical direction. A rod connected to the seal holding member and extending upward, the seal mounting portion is provided on the base on which the work can be placed, and is provided on the base to support the seal unit. And a seal unit supporting portion that protrudes from the head side into the cylinder bore when the work is mounted on the base, wherein the work transfer device includes a work holding unit that holds the work, and a seal unit. A seal operating means for detachably connected to an upper end portion of the rod, and operating the seal pressing member via the rod.