JP2001262397A - Bag-like work immersion holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid the contact of the liquid with an inner surface of a bag-like space by trapping the air in the bag-like space in an immersion holder to immerse a bag-like work such as a cap nut in a plating tank or other liquid tank. SOLUTION: A support rod portion extended in a projecting manner in the bag-like space from an opening part of the bag-like work is provided, the bag- like work is supported by the work support rod portion in a posture in which at least a part of the bag-like space is located above the opening part of the bag-like work, and a pipe to released the air trapped between the surface of the liquid flowing in from the opening part of the bag-like work and the bag-like space during the immersion in the liquid tank is formed in the support rod portion or separately formed therefrom. The support rod portion itself is formed of a pipe so as to realize the double effect of the work support and the air release.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an immersion holder for a bag-like work for holding a plurality of bag-like works (bag nuts or the like) in, for example, a tree shape and immersing them in a predetermined liquid tank, for example, a plating tank. About.

[0002]

2. Description of the Related Art Conventionally, for example, when a cap nut is subjected to a treatment such as acid electrolysis (scale removal after quenching) or electrolytic plating,
A so-called immersion holder is often used, which is like a fish bone suspended with its tail up. By attaching one cap nut to each branch part of the immersion holder from the opening, a large number of cap nuts are formed in a tree shape in a posture in which each of them faces obliquely upward (the posture in which the opening faces obliquely downward). Hold and
The holder is immersed together with a number of cap nuts in an acid electrolytic bath (mainly a sulfuric acid solution or the like), a plating bath, or the like to perform descaling, plating, or the like.

[0003]

In the process of immersing the immersion holder together with a large number of cap nuts in, for example, an acid electrolytic cell, the acid electrolyte enters the closed space (closed space) of the cap nut. However, the liquid level rises relatively, but the liquid cannot fill the closed space due to the air trapped in the closed space, and a part that cannot contact the acid electrolyte remains on the inner surface of the cap nut. . The scale (so-called black scale) generated during quenching or the like is likely to remain on the inner surface of the cap nut that does not come into contact with the acid electrolyte, and is not always sufficient in terms of rust prevention and the like. Therefore, after the plating step, a step of applying a rust preventive liquid to the inner surface of the cap nut in a barrel tank or the like may be required.

SUMMARY OF THE INVENTION An object of the present invention is to provide a dipping / holding device that allows a liquid to flow as much as possible over the entire inner surface of a closed space of a bag-shaped work when the bag-shaped work such as a bag nut is immersed in a predetermined liquid tank. To provide tools.

[0005]

Means for Solving the Problems and Effects of the Invention The present invention relates to a plurality of bag-shaped works having a bag-shaped space (closed space) (where the work is a material, an intermediate product, or a finished product, A work immersion holder that holds an object to be processed (including processing). The same applies to the following, and is immersed in a liquid tank together with the work. (A closed space), and the supporting rod portion supports the bag-like work in such a position that at least a part of the bag-like space is located above the opening of the bag-like work. At the same time, a pipe for escaping air trapped between the liquid surface of the liquid flowing from the opening of the bag-shaped work and the bag-shaped space when immersed in the liquid tank to the outside,
It is characterized in that it is formed in the support rod part or separately from the support rod part.

[0006] With this, the air trapped between the closed space of the bag-shaped work and the liquid surface during the immersion in the liquid tank,
Since the liquid is not escaped to the outside through the above-mentioned conduit and is prevented from entering by the air sealed in the space, the liquid can contact many parts of the inner surface of the bag-like work, for example, Acid electrolysis (scale removal), plating, degreasing, washing, rust prevention and other effects and efficiency can be enhanced. For example, when the liquid is brought into contact with the inner surface of the bag-shaped work in a wider range than before in dipping in an acid electrolytic cell for descaling, the scale removing effect is enhanced.

[0007] The above-mentioned conduit can be formed in the inside thereof by, for example, forming a support rod portion in a pipe shape (tubular shape). Further, as the form of the work immersion holder, a main body shaft portion formed in a longitudinal shape in the elevating direction and having a main body passage through which air is formed is connected to the main body shaft portion at predetermined intervals in a branch shape. A plurality of supporting rod portions formed so that a branch pipe through which air passes therethrough communicates with the main body pipe;
A liquid discharge portion may be provided at a lower end portion of the main body shaft portion, and the liquid discharge portion may be a liquid discharge hole having a cross section smaller than a pipe cross section of the main body conduit, and further, the liquid discharge hole may be provided. It is also possible to adopt a configuration in which the function of the aperture unit is provided.

With this configuration, the liquid flowing into the pipe from the bag-shaped space of the bag-shaped work by immersion in the liquid tank is discharged when the work immersion holder rises from the liquid tank. It can be discharged from the discharge hole (discharge part). In addition, in the process of dipping the work immersion holder in the liquid tank, the throttle section delays the flow of the liquid into the pipe line until the air in the bag-shaped space (closed space) has been released through the pipe line, Thereafter, the conduit will be filled with liquid. In other words, if the pipe is immediately filled with the liquid by immersion in the liquid tank, it becomes difficult to release air from the closed space of the bag-shaped work through the pipe, By delaying the entry of the liquid, it is easy to ensure that the air is released before the pipe is filled with the liquid. When the function of the throttle is provided in the liquid discharge hole, when the workpiece immersion holder rises from the liquid tank, the liquid in the pipe flows down through the throttle.

In a preferred embodiment of the present invention, the main body shaft portion is formed of a pipe material, and a supporting rod portion also formed of the pipe material is connected to the main body shaft portion by a pipe communicating with each other between the pipe materials. The upper opening of the main body shaft portion serves as a ventilation discharge portion, and air in the bag-like space of the bag-like work is released through the upper opening, while the lower end portion of the main body shaft portion is closed. The liquid discharge hole formed in the section functions as the liquid discharge section and the throttle section.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 shows a bag nut as an example of a bag-shaped work. A cap nut 1 is provided with a main body 2 having an internal thread portion 4 and a cap portion 3 for closing an opening on the opposite side of the external thread member of the main body 2 from the threaded side. A bag-like space (closed space) with the part where the tip of the male screw member such as a bolt enters)
5 are formed. Such a cap nut 1 can be formed by forging, threading by rolling or cutting, or a cap portion 3.
After the welding and heat treatment, it is usually immersed in a predetermined liquid tank for cleaning, rust prevention, plating and the like.

At this time, the immersion holder 7 of the present invention as shown in FIG. 2 is used. The immersion holder 7 includes a metal main body shaft portion 8 extending longitudinally in the elevating direction, and a plurality of support rods connected in a branch shape from the main body shaft portion 8 so as to face diagonally upward at predetermined intervals. , And the cap nuts 1 are attached to the support rods 9 one by one.

As shown in FIG. 2 (b), an elastic pressing portion (linear spring member) 10 is fixed to the main body shaft 8 substantially in parallel with the supporting rod portion 9, and the supporting rod portion 9 and the elastic pressing portion are fixed. 10, the cap nuts 1 are inserted, and a large number of cap nuts 1 are held by the immersion holder 7 in a tree shape as shown in FIG. Then, as shown in FIG. 3, in this state, a predetermined liquid tank 12 (for example, an electrolytic plating tank, an electroless plating tank, an acid electrolysis (descaling) liquid tank, a rust-preventive liquid tank, a degreasing liquid tank, a cleaning liquid tank, etc. When the predetermined processing is completed, the immersion holder 7 is pulled up from the liquid tank 12 together with the processed cap nut 1.

Further, as shown in FIG. 4, for example, in an electrolytic plating line or the like, an immersion holder 7 holding the above-mentioned cap nut 1 is connected to a connecting portion 15 of the line along a transport line 13 so that each step is performed. The immersion in the liquid tank 12 is repeated to complete the predetermined process. For example, 12a is a degreasing solution tank, 12a
The liquid tanks are arranged in the order of steps such that b is an acid electrolytic tank and 12c is an electrolytic plating tank. Although not shown, a cleaning liquid tank is usually provided between them. Then, as shown in (b), each immersion holder 7 is placed in the liquid tank 12 in each step.
Descends along with the lifting / lowering device (lifting guide) 16 together with the cap nut 1, rises after being immersed in the liquid tank for a predetermined time, advances along the transport line 13, and moves to the next step.

FIG. 5 shows the above-described immersion holder 7 more specifically. The main body shaft portion 8, the support rod portion 9, and the elastic pressing portion 10 are all made of metal. When immersed in a bath, it is covered with an insulating layer 35 of resin or the like so as not to be plated. However, the metal is exposed at the tip end portions of the support rod portion 9 and the elastic pressing portion 10 in order to obtain electrical conductivity with the material to be plated.

FIG. 6 shows each structure of the main body shaft portion 8 and the support rod portion 9 and a connection structure thereof. The main body shaft portion 8 has a long pipe shape (for example, a square pipe shape, a round pipe shape), and the inside thereof has a main body pipe 1 for air circulation.
8 is set. In addition, the support rod portion 9 is also made of a pipe material,
The inside thereof is a branch line 19 for the flow of air. In order to fix the base end of such a pipe-shaped support rod portion 9 to the main body shaft portion 8 so that the pipes communicate with each other, a mounting hole 22 is formed in the main body shaft portion 8. With the base end portion of the support rod portion 9 inserted into the support 22, the support rod portion 9 is fixed by brazing, welding, screwing, press-fitting, or another appropriate fixing method. The support rod 9 is inclined and fixed to the axis of the main body shaft 8 so as to face obliquely upward from a horizontal posture. In the case of this example, these support rod portions 9 are fixed to both side surfaces at the same height with the axis of the main body shaft portion 8 interposed therebetween as shown in the figure, but they may be arranged in a staggered manner, depending on the conditions. May be provided so as to protrude in three or four directions from three or four surfaces of the main body shaft portion 8. Further, in the case of this example, the support rod portions 9 are arranged at predetermined intervals such as equal intervals on one side, and are parallel to each other. The mounting hole 22 can be formed so as to face obliquely upward along an axis that faces obliquely upward of the support rod portion 9.

The air from the branch pipe 19 of each support rod 9 can escape upward through the main pipe 18 of the main shaft 8, and the upper end opening 27 of the main shaft 8 is connected to the ventilation outlet ( Air outlet). On the other hand, the lower end of the main body shaft portion 8 is closed by a closing portion 20, and the closing portion 20 is formed with a liquid discharge throttle hole 21 which also serves as a liquid discharge portion and a throttle portion. The liquid that has entered the main body conduit 18 of the main body shaft portion 8 through the main body shaft portion 8 is discharged downward from the liquid discharge throttle hole 21 when the immersion holder 7 is raised.

FIG. 7 shows the immersion holder 7 in which the insulating layer 35 is omitted. On a surface of the main body shaft portion 8 which is different from the surface on which the support rod portion 9 and the like are fixed by 90 degrees,
A bus bar 23 as an electrode member is fixed. The bus bar 23 is of a longitudinal shape having substantially the same length as the main body shaft portion 8, and has a hook-shaped energizing connection portion 23 a (see also FIG. 10) substantially corresponding to the upper end of the main body shaft portion 8. ,
It is connected to a not-shown energizing electrode portion (for example, installed at the connecting portion 15 in FIG. 4) at the energizing connecting portion 23a. At this time, in order to secure electrical contact between the energizing electrode portion and the bus bar 23, the spring member 24 made of a conductive material is connected to the bus bar 2.
3 and the spring member 24 and the current-carrying connecting portion 2
3a, the energized electrode portion of the other party enters, and is brought into an electrically contact state. In this example, such a bus bar 23
In order to fix the bus bar 23 to the main body shaft 8, a plurality of fixing brackets 32 are provided at predetermined intervals in the longitudinal direction thereof, and the bus bar 23 is fixed to the main body shaft 8 by these fixing brackets 32.
A hook 26 is fixed to the upper end of the main body shaft 8 so as to be back-to-back with the hook-shaped current-carrying connection 23a of the bus bar 23. Is used. In addition, bus bar 2
Of course, it is also possible to adopt another structure as the structure of the current-carrying connection part 23a or the structure for fixing to the main body shaft part 8.

In the elastic pressing portion 10 described above, a pair of portions projecting obliquely upward from both sides of the main body shaft portion 8 are connected by a connecting portion 25 to form an integral part that opens upward. . The connecting portion 25 is fixed to the bus bar 23 in a state of being in electrical contact with the bus bar 23 by the fixing bracket 31. The fixing bracket 31 is a connecting part 2 of the component of the elastic pressing part 10.
5 is fixed to the bus bar 23 by welding or the like while being pressed against the bus bar 23. Thus, the elastic pressing portions 1 on both sides
0, as shown in FIG.
5 is a box-shaped cross-section that fits into the bus bar 23 and the main body shaft portion 8, and the portion is fixed so as to straddle the bus bar 23 and the main body shaft portion 8 as shown in FIG. The elastic pressing portion 10 is positioned in substantially the same vertical plane as the supporting rod portion 9 so as to approach and oppose the supporting rod portion 9. As described above, in the present embodiment, the elastic pressing portions 10 opposed to each other with the main body shaft portion 8 interposed therebetween have an integral structure via the connecting portion 25. Is also excellent.

The elastic pressing portion 10 has a support rod 9 at its intermediate portion.
The projection 30 has a mountain-shaped or curved projection swelling on the opposite side (outside) to the opposite direction to the female thread 4 of the cap nut 1 in FIG. In this example, the support rod portion 9 is also formed with a mountain-shaped or curved-shaped protrusion portion 29 protruding on the side (outside) opposite to the direction facing the elastic pressing portion 10.
And the protruding portion 30 of the elastic pressing portion 10 are close to each other so as to face outward. When the cap nut 1 shown in FIG. 1 is inserted into the support rod section 9 and the elastic pressing section 10, for example, the inner surface of the female screw section 4 of the cap nut 1 contacts the protruding section 30 of the elastic pressing section 10. The elastic pressing portion 10 is elastically deformed inward and penetrates all the way.
Is also pressed against the inner surface of the female screw portion 4 by the reaction of the elastic force of the elastic pressing portion 10, and the cap nut 1 is held by the supporting rod portion 9 and the elastic pressing portion 10 substantially without looseness.

It is also possible to omit the projecting portion 29 of the supporting rod portion 9 and to form a straight pipe-shaped supporting rod portion 9 as shown in FIG. 7 (c). In this case, the outer surface on the upper side of the support rod portion 9 contacts the inner surface of the female screw portion 4 of the cap nut 1 entirely or partially along a straight line, and the cap nut 1 is supported. The mounting hole 22 formed in the side wall of the main body shaft 8 is formed in a direction orthogonal to the axis of the main body shaft 8, and a base curved portion 33 is formed in the base of the support rod 9. Thus, the base curved portion 33 can be fixed to the mounting hole 22.

FIG. 8 shows an example of the form of the support rod 9. The support rod 9 shown in FIG. 8A has a base end formed in a mounting hole 22 formed obliquely in the main body shaft 8. (B) is a mounting hole 2 formed in the base curved portion 33 at a right angle (for example, horizontal direction) to the main body shaft portion 8 in the longitudinal direction.
2. In any case, regardless of whether or not the projecting portion 29 is formed at the intermediate portion of the support rod portion 9, the branch conduit 19 inside the support rod portion 9 is
It is continuous from the base end to the tip.

The tip of the support rod 9 may be perpendicular to its axis as shown in FIG. 11 (b). However, as shown in FIG. It is also possible to provide the front end opening of the 19 in an almost horizontal state and open upward. With such an inclined tip 28, the opening position of the branch conduit 19 of the support rod 9 can be positioned as high as possible, and as described later, the liquid is relatively immersed in the liquid tank. When the surface rises, the entry of the liquid into the support rod 9 is delayed as much as possible, so that a larger area of the inner surface of the cap nut 1 can be immersed in the liquid. Also, for example, even if the tip of the support rod 9 abuts on the cap 3 of FIG. 1, the tip end opening of the support rod 9 does not come into close contact with the cap 3 due to the inclined tip 28, and therefore, the cap 3 and the like. It becomes difficult to be blocked.

As shown in FIG. 12, the relationship between the support rod 9 and the elastic pressing part 10 is such that the support rod 9 is located on the upper side and has a protrusion 29, as shown in FIG. Side pressing part 1
0, the projecting portion 30 is formed, (b) the upper and lower positional relations are reversed, (c) the supporting rod portion 9 is linear and located on the upper side, ( As shown in d), the support rod portion 9 may be linear and located on the lower side. Further, as shown in (e) and (f), the elastic pressing portion can also be made of a pipe material and used as the supporting rod portion 9. In this case, since one or both of the support rod portions 9 also serve as the elastic pressing portions 10, it can be seen that the elastic pressing portions 10 are formally omitted.

As shown in FIGS. 12 (e) and 12 (f), since each of the support rods 9 is in the form of a pipe, both support rods 9 are provided.
Air can escape through the interior of the device. (E)
In the example of (1), the upper support rod portion 9 is linear, and the lower support rod portion 9 has a protrusion 29 in the middle thereof. In (f), the upper and lower support rods 9 each have the protrusion 29. This is an example in which they are formed symmetrically with respect to the intermediate line between the two. Also,
When the immersion holder is used as an immersion holder in an electrolytic plating tank, as shown in FIG. 13, the immersion holder 7 serves as one of the electrodes.
A voltage is applied to each of the elastic pressing portions 10 using 0 as a branch electrode, and the cap nut 1 that is in electrical contact with the elastic pressing portions 10 becomes, for example, a negative pole, so that electrolytic plating is performed. In this example, since both the main body shaft portion 8 and the support rod portion 9 are made of metal, they can also function as electrodes.

In FIGS. 12 (e) and 12 (f), one or both of the support rods 9 function as electrodes. On the other hand, if it is a simple immersion plating without electrolysis or a holder dedicated to immersion in a rust preventive solution, a degreasing solution, a cleaning solution, or the like, an electrode is not necessary. In this case, the entire immersion holder 7 is made of resin. And the like. However, the immersion holder used in the process line including the electroplating tank usually goes through a degreasing tank, an acid electrolytic tank, an electrolytic plating tank, and a washing tank as described above. Those having a structure functioning as an electrode, such as the above-described bus bar 23 and the elastic pressing portion 10 as a branch electrode, are used.

FIG. 14 schematically shows an immersion holder 7 which is an example of the present invention, and explains its operation. As shown in (a), the current path branches to each elastic pressing portion 10 via a bus bar 23 attached to the current electrode portion such as the connection portion 15. On the other hand, each support rod 9
An air passage is formed from the branch pipe line 19 to the main body pipe line 18 of the main body shaft portion 8. In other words, the main body conduit 18
, A plurality of branch conduits 19 communicate in parallel.

Here, the main body shaft portion 8 is made of, for example, a square pipe made of stainless steel or the like, and the bus bar 23 is made of an excellent conductive material such as a copper plate as an electrode material. Similarly, a stainless steel pipe having corrosion resistance and conductivity is preferably used for the support rod portion 9, and a copper bar is preferably used for the elastic pressing portion 10. The base shaft 8, the bus bar 23, the support rod 9, and the base end of the elastic pressing part 10 are coated with resin or the like as an insulating coating so that unnecessary current does not flow and a plating layer is not formed. A layer (insulating layer) 35 is formed (see FIG. 5). When the main body shaft portion 8 and the support rod portion 9 have sufficient functions and structures as electrodes, it is not always necessary to provide the bus bar 23 separately.

When the immersion holder 7 holding a large number of cap nuts 1 is immersed in the electrolytic plating tank 12 as shown in FIG. 13, the holder 7 side is, for example, a minus pole and the counter electrode 36 is, for example, a plus pole. Is disposed in the plating tank 12. In the process of immersing the holder 7 in a liquid tank 12 such as an electrolytic plating tank, branch pipes 19 are formed in the support rod 9 as shown in FIG. From the upper opening 27 via the main body line 18 of the main body, air trapped in the closed space of the cap nut 1 is subjected to those lines 1 according to the relative rise of the liquid level.
Escape to the outside via 9 and 18.

FIG. 14B shows a process in the course of immersion. When the immersion holder 7 starts immersion, the liquid is discharged from the liquid discharge throttle hole 21 formed in the lower portion of the main body shaft portion 8. It enters the main body conduit 18 of the part 8. However, since the resistance of the liquid inflow is imparted by the throttle effect of the liquid discharge throttle hole 21, the relative rise in the liquid level in the main body conduit 18 and the relative rise in the external liquid level of the immersion holder 7 are increased. And a disparity h occurs. Due to the restricting effect of the liquid discharge restricting hole 21 (in other words, the difference in h generated during the immersion process between the liquid level of the main pipe 18 and the liquid level of the liquid tank), the air trapped in the closed space of the cap nut 1 is reduced. Escapes, and after the liquid flows in through the opening at the distal end of the branch conduit 19, the liquid level in the main conduit 18 rises to the position of the proximal end opening of the branch conduit 19. In other words, the liquid level rises relatively in the course of immersion of the immersion holder 7, and the liquid enters the closed space of the cap nut 1 and closes the opening of the space. Since the main pipe 18 communicates with the main pipe 18 through the branch pipe 19, the air in the same space is released through the pipes 19, 18, thereby allowing the liquid level in the space to rise. Then, the liquid surface reaches the distal end opening of the branch conduit 19, and the liquid flows through the distal end opening of the branch conduit 19.
Until it flows into the inside, the opening of the supporting rod portion 9 on the side of the main conduit 18 is not blocked by the liquid, so that the liquid level is reliably reached to the position of the tip opening of the branch conduit 19 in the bag-shaped space. It is allowed to ascend, so that the inner surface of the cap nut 1 is reliably immersed in the liquid up to its height position.

Here, if there is no difference h between the liquid level of the main pipe 18 and the liquid level of the liquid tank, the branch pipe is closed when the base end opening of the branch pipe 19 is closed with the liquid. Since the passage 19 and the main body line 18 are shut off, the flow of air that escapes from the closed space of the cap nut 1 to the main body line 18 through the branch line 19 is cut off, and therefore the liquid in the bag-shaped space is blocked. The surface will not rise any further.

As shown in FIG. 15A, the immersion holder 7
Is completely immersed in the liquid tank 12, and the liquid level in the liquid tank and the liquid level in the main pipe 18 are at the same level. In other words, the cap nut 1 is connected to the branch pipe 19 of each support rod 9.
After the air in the enclosed space of the
And the liquid enters from the branch pipe 19 and fills the main pipe 18 with the liquid flowing from the branch pipe 19 and the liquid entering from the liquid discharge throttle hole 21.

As shown in FIG. 15B, when the immersion holder 7 is lifted up from the liquid tank 12 in such a state, the liquid present in the branch pipes 19 of each support rod 9 is removed from the main body. The liquid that flows into the pipe 18 and further flows down through the liquid discharge throttle hole 21, and eventually the liquid in the branch pipe 19 and the liquid in the main pipe 18 are both discharged. . In addition, the size of the liquid discharge throttle hole 21 is set to a size according to conditions such as the descending / upward speed of the immersion holder 7 and the viscosity of the liquid in order to satisfy both the above-described restricting function and discharging function. It will be.

For example, as shown in FIG. 16A, the liquid discharge throttle hole 21 is a simple hole 21 formed in the closing portion 20 of the main body shaft portion 8, and as shown in FIG. A tapered portion is formed at the lower end portion like the inclined surface 37,
The hole 21 provided at the lower end may be used. Further, as shown in (c), a thin tube portion 38 may be integrally provided at the lower end portion of the main body shaft portion 8, and the conduit of the thin tube portion 38 may be the liquid discharge throttle hole 21. In this case, as shown in FIG.
The upper side of 8 may be a tapered slope 37, and the liquid discharge throttle hole 21 may be formed in the lower part in a so-called funnel shape. The funnel shape or the tapered shape as in (d) (this is also true for (b)) has an effect that the liquid easily flows down.

Further, as shown in (e), a plurality of liquid discharge throttle holes 21 can be formed. Further, as shown in (f), the throttle section 40 can be provided separately from the liquid discharge section 41. In this case, a pipe portion having a smaller cross-sectional area than the other portion is formed in the middle portion of the main body conduit 18 of the main body shaft portion 8, and the inside thereof is defined as a throttle portion 40, and the liquid discharge portion 41 is a lower end portion of the main body shaft portion 8. Alternatively, it may be formed with the same cross-sectional area as the main body conduit 18. As shown in (g), the closing part 20 can be provided as a separate member detachable from the main body shaft part 8. If it is detachable in this way, it is possible to easily clean the inside of the main body conduit 18 or the like.

Further, as shown in FIG. 17, the throttle section is omitted, and the liquid discharge section 41 is provided below the main body conduit 18 of the main body shaft section 8.
When the immersion holder is immersed in the liquid tank, the valve 42 is closed to allow the liquid to flow into the main conduit 18 as shown in FIG. When the immersion holder is pulled up (raised) from the liquid tank to prevent the immersion holder from entering, the valve 42 is opened to open the main body conduit 1.
The liquid in 8 can also be made to flow down. Further, as shown in FIG. 18, a liquid discharge portion 41 is formed below the main body conduit 18 of the main body shaft portion 8, and a check valve 43 is provided in this portion, so that the liquid discharge portion 41 is moved upward into the main body conduit 18. Can be prevented, and the liquid stored in the main pipe 18 can be discharged downward.

Further, in the above description, the bag nut 1 is taken as an example of the bag-shaped work. However, the present invention is not limited to this, and the work is of a type having a bag-shaped space so that air can be trapped when immersed in the liquid tank. The present invention can be applied to all cases.

[Brief description of the drawings]

FIG. 1 is a view showing a cap nut as an example of a bag-like work in which the immersion holder of the present invention is used.

FIG. 2 is a diagram showing a state in which a bag-like work is attached to the immersion holder of the present invention.

FIG. 3 is a view for explaining the operation of immersing it in a predetermined liquid tank.

FIG. 4 is a diagram showing an example of a process of repeating immersion along a transport line.

FIG. 5 is a front view showing an example of the immersion holder of the present invention.

FIG. 6 is a view showing a form in which a supporting rod portion is connected to a main body shaft portion by pipe materials.

FIG. 7 is a view more specifically showing the immersion holder of the present invention.

FIG. 8 is a view showing an example of a support rod.

FIG. 9 is a diagram showing an example of components of an elastic pressing portion.

FIG. 10 is a diagram showing a form example of a bus bar.

FIG. 11 is a diagram showing an example of a tip shape of a support rod portion.

FIG. 12 is a view showing some examples of combinations of a support rod portion and an elastic pressing portion.

FIG. 13 is a diagram showing an example in which the immersion holder of the present invention is used in an electrolytic plating tank.

FIG. 14 is a view conceptually showing a cross section of an example of the immersion holder of the present invention, and illustrating a state when the holder is lowered into a liquid tank.

FIG. 15 is a view conceptually showing a cross section of an example of the immersion holder of the present invention, and illustrating a state of immersion in a liquid tank and a state of ascending from the liquid tank.

FIG. 16 is a view showing some examples of a liquid discharge throttle hole or a throttle part.

FIG. 17 is an explanatory view in which a valve means is provided at a lower part of a main body conduit.

FIG. 18 is a diagram showing an example in which a check valve is provided at a lower portion of a main body conduit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bag nut 5 Bag-shaped space (closed space) 7 Immersion holder 8 Main body shaft part 9 Support rod part 10 Elastic pressing part 12 Liquid tank 13 Transport line 18 Main body conduit 19 Branch conduit 21 Liquid discharge throttle hole 23 Bus bar 27 Upper part Opening 29, 30 Projecting part 35 Insulating layer (coating layer) 40 Throttle part 41 Liquid discharging part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tsunehiro Shimizu 3-4-2, Daiko, Higashi-ku, Nagoya City, Aichi Prefecture Inside Shimizu Plating Industry Co., Ltd. (72) Inventor Kenichi Shimizu 3-27, Daiko, Higashi-ku, Nagoya City, Aichi Prefecture No. Shimizu Plating Industry Works

Claims (13)

[Claims] 1. A work immersion holder that holds a plurality of bag-shaped works having a bag-shaped space and is immersed in a liquid tank together with the works, wherein the bag-shaped space is opened from an opening of the bag-shaped work. A supporting rod portion extending so as to protrude into the bag-shaped work is supported by the supporting rod portion in such a manner that at least a part of the bag-shaped space is positioned above the opening of the bag-shaped work, A pipe for escaping air trapped between the liquid surface of the liquid flowing from the opening of the bag-shaped work and the bag-shaped space at the time of immersion in the liquid tank to the outside is provided in the support rod portion or the support rod portion. A immersion holder for a bag-shaped work, which is formed separately from the above. 2. A work immersion holder for holding a plurality of bag-shaped works having a bag-shaped space and immersing the work in a liquid tank together with the works, wherein the bag-shaped space is opened from an opening of the bag-shaped work. A supporting rod portion extending so as to protrude into the bag-shaped work is supported by the supporting rod portion in such a manner that at least a part of the bag-shaped space is positioned above the opening of the bag-shaped work, A pipe for escaping air trapped between the liquid surface of the liquid flowing from the opening of the bag-shaped work and the bag-shaped space at the time of immersion in the liquid tank to the outside is provided in the support rod portion or the support rod portion. Also, the liquid flowing into the pipe from the bag-shaped space of the bag-shaped work by immersion in the liquid tank is discharged when the work immersion holder rises from the liquid tank. A liquid discharge section that communicates with a part of the pipeline or the pipeline. Immersion retainer of the bag-like workpiece, characterized in that provided in. 3. A workpiece immersion holder which holds a plurality of bag-shaped works having a bag-shaped space and is immersed in a liquid tank together with the works, wherein the bag-shaped space is opened from an opening of the bag-shaped work. A supporting rod portion extending so as to protrude into the bag-shaped work is supported by the supporting rod portion in such a manner that at least a part of the bag-shaped space is positioned above the opening of the bag-shaped work, A pipe for escaping air trapped between the liquid surface of the liquid flowing from the opening of the bag-shaped work and the bag-shaped space at the time of immersion in the liquid tank to the outside is provided in the support rod portion or the support rod portion. And a liquid discharge unit that discharges the liquid that has flowed from the bag-shaped space of the bag-like work into the pipe line by immersion in the liquid tank when the work immersion holder is raised. Is provided in communication with a part of the pipeline or the pipeline. Further, a throttle portion is provided in communication with the pipeline, and the throttle portion finishes escaping the air in the bag-shaped space through the pipeline while the work immersion holder is immersed in the liquid tank. A immersion holder for a bag-shaped work, characterized in that the flow of liquid into the pipe is delayed until the pipe is filled with the liquid. 4. The immersion holder for a bag-like work according to claim 3, wherein the liquid discharge portion also serves as the throttle portion. 5. The support rod portion is formed in a pipe shape,
The immersion holder for a bag-shaped workpiece according to any one of claims 1 to 4, wherein the inside of the immersion holder is the conduit. 6. The work immersion holder, comprising: a main body shaft formed in a longitudinal direction in the elevating direction and having a main body passage formed therein to allow air to pass therethrough; A plurality of supporting rod portions formed such that a plurality of connected branch passages through which air passes therethrough communicate with the main body conduit; and a lower end portion of the main body shaft portion, and a pipe of the main body conduit. The immersion holder for a bag-like work according to any one of claims 1 to 5, further comprising: a liquid discharge hole having a cross section smaller than a path cross section, wherein the liquid discharge hole also serves as the liquid discharge portion and the throttle portion. 7. The support rod portion is formed in a pipe shape,
The inside thereof is the pipe or the branch pipe, and a linear or plate-like elastic pressing portion which is elastically deformable in parallel is provided below the support rod portion, and in a state where the bag-like work is held. ,
The supporting rod portion and the elastic pressing portion project from the opening of the bag-shaped work into the bag-shaped space, and the elastic pressing portion is pressed against the inner surface of the bag-shaped space in an elastically deformed state, whereby the reaction force causes The supporting rod portion is also pressed against the inner surface of the bag-shaped space, and supports the bag-shaped work in such a position that at least a part of the bag-shaped space is located above the opening of the bag-shaped work. 7. The immersion holder for a bag-like work according to any one of 6. 8. The liquid tank is an electroplating liquid tank, the main body shaft is provided with one electrode, and at least one of the support rod and the elastic pressing part is formed of a conductive material. 8. A branch electrode which is electrically connected to the first electrode.
3. The immersion holder for a bag-like work according to item 1. 9. The liquid tank is an electroplating liquid tank, and one electrode is provided on the main body shaft portion, and a current-carrying portion is formed integrally from the electrode in a longitudinal shape along the main body shaft portion. ,
Further, the elastic pressing portion is provided as a branch electrode and electrically connected to the current supplying portion so as to branch from the current supplying portion, and substantially the entire body shaft portion including the current supplying portion, the support rod portion, and the elastic pressing portion are provided. 8. The base end of the portion is covered with a coating layer having corrosion resistance and electrical insulation.
Or the immersion holder of the bag-shaped work according to 8. 10. The support rod portion is formed in a pipe shape, the inside of the support rod portion is formed as the pipe or the branch pipe, and an opening surface of a tip end portion of the pipe-shaped support rod portion is formed in the support rod portion. The immersion holder for a bag-shaped work according to any one of claims 1 to 9, wherein the immersion holder is formed so as to face upward from a plane perpendicular to the center line. 11. The main body shaft portion is made of a pipe material,
The support rod portion also formed of a pipe material is connected to the main body shaft portion so as to form a conduit communicating with each other by the pipe material, and an upper opening of the main body shaft portion is a ventilation discharge portion, While the air in the bag-shaped space of the bag-shaped work is released through the upper opening, the lower end of the main body shaft is closed, and a liquid discharge hole is formed in the closed part, and the liquid discharge unit and the throttle unit are closed. The immersion holder for a bag-shaped workpiece according to any one of claims 6 to 10, wherein 12. The bag-like work according to claim 1, wherein the liquid tank is an electroless plating liquid tank, a rust prevention liquid tank, a degreasing liquid tank, or a cleaning liquid tank. Immersion holder. 13. The immersion holder for a bag-shaped work according to claim 1, wherein the bag-shaped work is a bag nut.