JP4047711B2 - Vibration welding jig for resin oil reservoir tank - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a resin oil reservoir tank and its vibration welding jig. More specifically, the present invention relates to a resin oil reservoir tank and a vibration welding apparatus for the same that can reduce costs by using a common oil reservoir tank shape and a common welding jig.
[0002]
[Prior art]
Conventionally, a resin reservoir tank has been used to store and filter hydraulic oil of a vehicle power steering device. FIG. 7 is an exploded perspective view showing an example of a conventional resin reservoir tank. This is because a resin upper tank 2 provided with an inflow pipe 1, a resin lower tank 4 provided with an outflow pipe 3, and a resin intermediate provided between the upper tank 2 and the lower tank 4. The intermediate member has a substantially ring shape having a bracket mounting portion 5, and the upper tank 2 and the lower tank 4 are welded and integrated through the intermediate member. (For example, see Patent Document 1)
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-138934
[Problems to be solved by the invention]
In the conventional resin reservoir tank as described above, the upper tank 2 and the lower tank 4 are welded to the intermediate member 6 with the direction of the inflow pipe 1 and the outflow pipe 3 directed to a desired direction according to the requirements of the vehicle type. Can do. However, in that case, as many welding jigs as the number of directions of the inflow pipe 1 and the outflow pipe 3 are changed, and there is a problem that the cost increases.
[0005]
In view of the above-described conventional problems, the present invention provides a resin oil reservoir tank and a vibration welding jig thereof that can reduce the cost by making the shape of the oil reservoir tank common and making the welding jig common. It aims to be realized.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, claim 1 of the present invention has a cylindrical shape, and has an upper tank 20 to which a separate elbow-shaped inflow pipe 25 is welded on its side, and a mounting portion 27. Resin comprising an intermediate member 21 welded to the lower part of the upper tank 20 and a dish-like lower tank 22 integrally formed with an outlet pipe 29 welded to the intermediate member 21 and extending radially in the lower part thereof. A welding jig for welding the inflow pipe 25 to the upper tank 20 of an oil reservoir tank made of an oil, comprising an upper jig 30 for supporting the inflow pipe 25 and a lower jig 36 for supporting the upper tank 20. The upper jig 30 is provided with a rotating jig 31 that supports the inflow pipe 25 and can be rotated horizontally.
[0010]
By adopting this configuration, it is possible to obtain a resin reservoir tank and a welding jig for the same that can reduce the cost by using the same member.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a view showing an embodiment of a resin reservoir tank of the present invention, in which (a) is an exploded perspective view and (b) is an assembly view. The resin reservoir tank of the present embodiment is composed of an upper tank 20, an intermediate member 21, and a lower tank 22, each formed of resin, as shown in FIG. Is formed with an inflow hole 24 in the lower side surface, and an elbow-shaped inflow pipe 25 is welded so as to communicate with the inflow hole 24.
[0012]
The intermediate member 21 includes a substantially ring-shaped main body 26 and a mounting portion 27 formed at one end of the main body 26 to which an iron bracket is attached. A filter 28 is stretched on the substantially ring-shaped main body 26. Has been. The lower tank 22 has a dish shape, and an outflow pipe 29 is provided obliquely downward at the bottom.
[0013]
Each member formed in this manner is assembled as shown in FIG. In this case, as shown in (a), the rotation position of the outflow pipe 25 with respect to the upper tank 20 in the direction of arrow AA 'and the rotation position of the outflow pipe 29 with respect to the attachment portion 27 of the intermediate member 21 in the direction of arrow BB'. The position and the rotational position of the upper tank 20 in the direction of arrow CC ′ relative to the mounting portion 27 provided on the intermediate member 21 can be selected as desired positions. For this reason, assembly into a product is performed by the following three steps using the vibration welding jig of the present invention.
[0014]
First, the first step will be described with reference to FIG. This uses an upper jig 30 that supports the inflow pipe 25 and a lower jig 36 (not shown) that supports the upper tank 20. The upper jig 30 has a plate shape as shown in FIG. 2A, and a rotating jig 31 having a recess 32 capable of holding the inflow pipe 25 is rotatably provided at the center thereof. The recess 32 is formed so that the welding surface 25 a of the inflow pipe 25 is positioned at the center of the rotating jig 31 and the surface thereof is parallel to the surface of the upper jig 30.
[0015]
The jig configured in this manner is set so that the inflow pipe 25 is set in the recess 32 of the rotating jig 31 and is in contact with the inlet 25a of the upper tank 20 set in the lower jig (not shown). Vibration welding can be performed. At this time, the rotating jig 31 is rotated in advance so that the inflow pipe 25 is positioned at a desired angle, and the vibration welding device is operated to weld the inflow pipe 25 to the upper tank 20 at a desired angle. Can be made.
[0016]
Next, the second step will be described with reference to FIG. This consists of an upper jig 30 that supports the lower tank 22 and a lower jig 36 (not shown) that supports the intermediate member 21, which are respectively connected to the intermediate member 21 supported by both jigs. The central axes of the lower tanks 22 coincide with each other. As shown in FIG. 3A, the upper jig 30 is rotatably provided with a rotating jig 33 having a recess 34 that can support the lower tank 22 at the center thereof. A notch 35 that can avoid the outflow pipe 29 is formed on the wall of the recess 34 of the rotating jig 33.
[0017]
The jig configured as described above can be vibration welded by setting the lower tank 22 in the recess 34 of the rotating jig 33 and contacting the intermediate member 21 set in the lower jig (not shown). At this time, the rotating jig 33 is rotated in advance so that the outflow pipe 29 of the lower tank 22 is positioned at a desired angle, and the vibration welding device is operated to outflow to the attachment portion 27 of the intermediate member 21. The pipe 29 can be welded at a desired angular position.
[0018]
Next, the third step will be described with reference to FIGS. This consists of an upper jig 30 that supports the upper tank 20 and a lower jig 36 that supports the intermediate member 21 and the lower tank 22, and both jigs are connected to the upper tank 20 supported by both jigs. The central axes of the intermediate members 21 are matched. The upper jig 30 is rotatably provided with a rotating jig 37 having a recess 38 capable of supporting the upper tank 20 at the center thereof as shown in FIG. A notch 39 that can avoid the inflow pipe 25 is formed in the wall of the recess 38 of the rotating jig 37.
[0019]
The lower jig 36 is provided with a support jig 40 for supporting the intermediate member 21 at the center thereof. The support jig 40 has a concave portion 41 into which the lower tank 22 and the outflow pipe 29 are inserted, and a concave portion 42 for inserting the attachment portion 27 is formed in a part thereof.
[0020]
The jig thus configured performs welding as shown in FIG. In the figure, a lower jig 36 serves as a fixed portion of the vibration welding apparatus and is pressed upward by a pressing device (not shown). The upper jig 30 serves as a vibration unit and is vibrated in the left-right direction by a vibration device (not shown). The upper tank 20 to which the inflow pipe 25 is welded in the first stroke is set on the upper jig 30 via the rotating jig 37, and the lower tank 22 is welded to the lower jig 36 in the second stroke. The intermediate member 21 is set via the support jig 40.
[0021]
Then, the upper tank 20 is rotated together with the rotating jig 31 to fix the position of the inflow pipe 25 with respect to the mounting portion 27 of the intermediate member 21 at a desired position, and then the lower jig 36 is pressed upward by a pressing device not shown. Thus, the upper tank 20 and the intermediate member 21 can be welded by pressing the intermediate member 21 against the upper tank 20 and vibrating the upper jig 30 with the vibration device in that state.
[0022]
FIG. 6 is a view showing another embodiment of the resin reservoir tank of the present invention and its vibration welding jig. As shown in the figure, the reservoir tank of the present embodiment is different from the previous embodiment. The inflow pipe 25 is formed integrally with the upper tank 20, and the inflow pipe 25 and the outflow pipe 29 are parallel to each other. It is provided. Therefore, the assembly may be performed by omitting the first process in the previous embodiment and performing the second process and the third process.
[0023]
【The invention's effect】
According to the resin reservoir tank of the present invention and its vibration welding jig, the upper tank, the lower tank, and the intermediate member of the reservoir tank are standardized, and a small number of vibration welding jigs for assembly are used in common. Further, it is possible to reduce the mold cost for resin formation and the vibration welding jig cost for assembly.
[Brief description of the drawings]
1A and 1B are views showing an embodiment of a resin reservoir tank of the present invention, in which FIG. 1A is an exploded perspective view, and FIG.
FIG. 2 is a view for explaining a first step for assembling the resin reservoir tank of the present invention.
FIG. 3 is a view for explaining a second step for assembling the resin reservoir tank of the present invention.
FIG. 4 is a view for explaining a third step for assembling the resin reservoir tank of the present invention.
FIG. 5 is a view for explaining a third step for assembling the resin reservoir tank of the present invention.
FIG. 6 is a view showing another embodiment of the resin reservoir tank of the present invention and its vibration welding jig.
FIG. 7 is a view showing an example of a conventional resin reservoir tank.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 20 ... Upper tank 21 ... Intermediate member 22 ... Lower tank 23 ... Oil supply port 24 ... Inflow hole 25 ... Inflow pipe 26 ... Ring-shaped main body 27 ... Attachment part 28 ... Filter 29 ... Outflow pipe 30 ... Upper jigs 31, 33, 37 ... Rotating jigs 32, 34, 38 ... Recesses 35, 39 ... Notch 36 ... Lower jig 40 ... Intermediate member support jig 41 ... Lower member support hole 42 ... Bracket insertion recess

Claims (1)

It has a cylindrical shape, and has an upper tank (20) to which a separate elbow-shaped inflow pipe (25) is welded on its side and a mounting portion (27), and is welded to the lower portion of the upper tank (20). Intermediate member (21) and a dish-shaped lower tank (22) integrally formed with an outlet pipe (29) welded to the intermediate member (21) and extending radially in the lower part thereof. A welding jig for welding the inflow pipe (25) of the resin oil reservoir tank to the upper tank (20),
  An upper jig (30) for supporting the inflow pipe (25) and a lower jig (36) for supporting the upper tank (20);
  A vibration welding jig characterized in that the upper jig (30) is provided with a rotating jig (31) which supports the inflow pipe (25) and can be rotated horizontally.

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