WO2018203449A1

WO2018203449A1 - Thermoplastic resin-made half-split body

Info

Publication number: WO2018203449A1
Application number: PCT/JP2018/011032
Authority: WO
Inventors: 木嶋　美智夫
Original assignee: タイガースポリマー株式会社
Priority date: 2017-05-01
Filing date: 2018-03-20
Publication date: 2018-11-08

Abstract

The present invention enhances, without deteriorating the welding reliability, the space efficiency in a container or a tube body obtained by welding half-split bodies. According to the present invention, by welding of end surfaces of the paired thermoplastic resin-made half-split bodies to each other, a container or a tube body is formed. The thermoplastic resin-made half-split bodies each have a flange extending along the welding surface. In at least a partial section in the peripheral direction of the flange, portions serving as wall surfaces of the container include a first wall portion and a second wall portion. At a position substantially coincident, in the width direction of the flange, with the outer edge of the flange, the first wall portion extends along the pressure-application direction of welding. The second wall portion connects the inner edge of the flange and the first wall portion, and a space between the flange and the second wall portion faces a space external to the container.

Description

Half-cracked body made of thermoplastic resin

The present disclosure relates to a half-cracked body made of a thermoplastic resin. In particular, the present invention relates to a half-cracked body made of a thermoplastic resin that is used in a process of forming a container or a tubular body by welding end surfaces of a pair of half-cracked body made of a thermoplastic resin to form a container or a tubular body.

In automobile parts and various industrial parts, parts such as containers and pipes are used with synthetic resin. There are various methods for manufacturing these containers, tubes and the like using synthetic resins. For example, it is possible to form a container, a tubular body, or the like by welding the open end portions of a pair of half-cracks formed in advance. For the welding, a welding method such as vibration welding, ultrasonic welding or hot plate welding may be used. If a pair of half-split bodies are welded to form a container, a tube, or the like, a closed hollow container, a tube having a complicated pipe shape, or the like can be efficiently manufactured, which is convenient.

For example, Patent Document 1 discloses a technique for manufacturing an intake manifold having a surge tank by vibration welding a lower member and an upper member, which are half-broken, in a state where the inner pipe is disposed. It is disclosed that a high-performance and low-cost resin intake manifold can be manufactured. Here, the half-broken bodies are welded to each other at the welding flange portions formed to protrude outward from a surge tank, a pipe body or the like.

Further, in Patent Document 2, regarding a technique for integrating the lamp body and the front lens by vibration welding, a flange projecting sideways is provided at the peripheral edge of the opening of the lamp body, and the peripheral edge of the front lens is provided. It is disclosed that the legs are welded so as to bite into the flange.

JP-A-9-177624 JP-A-9-245508

In the welding technique, as in the prior art described above, generally, a flange is provided at a portion to be welded so as to protrude outward with respect to a container, a tube, or the like, and welding is performed using the flange. This is because the portion to be welded provided on the flange is sufficiently pressed toward the mating member by a jig or the like in order to reliably perform the welding. If the pressurization is insufficient, the welding strength is insufficient or the required airtightness cannot be obtained.

However, if a flange is provided so as to protrude outward with respect to the container, tube, etc., the space utilization efficiency in the container, tube, etc. is reduced. That is, in a part or the like arranged in an engine room of an automobile, since a space in which the part can be used is limited due to layout, a flange that protrudes from a container or a tube body is provided as in the prior art. And, the amount of protrusion of the flange must be a position where the wall surface of the container, tube, etc. is relatively retracted. Then, there is a tendency that a sufficient capacity of the container cannot be secured or a sufficient cross-sectional area of the pipeline cannot be secured. In recent years, parts having higher space efficiency have been demanded for parts arranged in an engine room of a vehicle.

An object of the present disclosure is to provide a container and a tube obtained by welding a half-cracked body without impairing the certainty of welding, and even in a limited layout space. The purpose is to increase the space efficiency such as the cross-sectional area of the body. Moreover, the other objective of this indication is to improve the certainty of the welding of a half crack body.

As a result of intensive studies, the inventor provided a part of the wall of the hollow part such as a container or tube in a half-cracked body at a position that substantially coincides with the outer edge of the flange, and the inner edge of the flange It has been found that the space efficiency can be improved while maintaining the certainty of welding if the structure is such that the walls are connected, and the present invention has been completed.

The present disclosure is a thermoplastic resin half-crack used in a process of forming a container or a tube by welding the end faces of a pair of thermoplastic resin half-cracks, and the thermoplastic resin half-crack is , Having a flange extending along the welding surface, and in at least a part of the flange in the circumferential direction, the portion that becomes the wall surface of the container or the tube has the first wall portion and the second wall portion. The first wall portion extends along the pressure direction during welding at a position substantially coinciding with the outer edge of the flange in the width direction of the flange, and the second wall portion is located on the inner side of the flange. A space that is connected between the edge portion and the first wall portion and is surrounded by the flange and the second wall portion is a half-cracked body made of a thermoplastic resin that faces the external space of the container or the tube (first 1 invention).

In the first invention, a rib extending along a pressing direction during welding is provided in the section, and the rib is connected to the second wall so as to connect between the flange and the first wall portion. It is preferable to be provided through the portion (second invention).
In the second invention, it is preferable that the rib is provided over the entire length of the first wall portion in the pressurizing direction during welding (third invention).

In the first to third aspects of the invention, the second wall portion is inclined with respect to the pressurizing direction and the welding surface at the time of welding so as to move away from the flange as it goes from the inner edge to the outer edge of the flange. It is preferable to have the provided part (4th invention).

Further, the present disclosure is a thermoplastic resin half-crack used in a process of forming a container or a tubular body by welding end surfaces of a pair of thermoplastic resin half-cracked bodies to each other, the wall surface of the container or the tubular body And a flange extending along the edge of the wall, and the flange has a non-visible region that cannot be seen by being blocked by the wall when viewed from the pressurizing direction during welding. This is a half-cracked body made of a plastic resin (fifth invention).

In 5th invention, the rib extended along the pressurization direction at the time of welding so that a wall part and a flange may be connected is provided, and the part which a rib and a flange connect is the pressurization direction at the time of welding When viewed from above, it is preferable to have a non-visible region that is blocked by the wall and cannot be visually recognized (the sixth invention).

Further, the present disclosure is a thermoplastic resin half-crack used in a process of forming a container or a tubular body by welding end surfaces of a pair of thermoplastic resin half-cracked bodies to each other, the wall surface of the container or the tubular body And a flange extending along the edge of the wall portion, and a recess recessed in a direction substantially perpendicular to the pressing direction during welding is formed by a part of the wall portion and a part of the flange. Thermoplastic resin half-cracked body (seventh invention).

In the seventh invention, a rib extending along the pressing direction at the time of welding is provided, and the rib connects the wall portion and the flange in the recess (eighth invention).

According to the half-cracked body made of the thermoplastic resin of the present disclosure (first invention), the space efficiency of the obtained container or tube body is increased while maintaining the certainty of welding.

Furthermore, if it is made like 2nd invention, pressure resistance of a container, a tubular body, etc. will be improved. Further, according to the third aspect of the invention, the degree of freedom of design of the receiving jig (welding jig) used for welding is increased, which contributes to improvement of the certainty of welding. Further, according to the fourth aspect of the invention, the space efficiency of the obtained container or tube body is further increased.

The other thermoplastic resin half-cracked body (the fifth invention or the seventh invention) of the present disclosure can also improve the space efficiency of the obtained container or tube body while maintaining the certainty of welding. Furthermore, by providing the rib as in the sixth invention or the eighth invention, the pressure resistance of the container or the tube body can be enhanced.

It is a perspective view which shows the example by which a container is comprised using the half crack body of 1st Embodiment. It is sectional drawing with which a container is comprised by the half-cracked body of 1st Embodiment. It is a schematic diagram which shows a part of process of welding the half crack body of 1st Embodiment. It is a partial schematic diagram of the process of welding the half crack body of 1st Embodiment using the jig | tool of another form. It is sectional drawing of the half crack body of 2nd Embodiment.

Hereinafter, embodiments of the invention will be described with reference to the drawings, taking an expansion tank (intermediate tank) used for gas piping as an example. The expansion tank is a member formed into a hollow box-like container by welding a pair of half cracks. The expansion tank is provided with

connection nipples

18 and 28 that communicate the inside and outside of the tank. In this expansion tank, rubber tubes or the like can be connected to the

connection nipples

18 and 28. The expansion tank is provided, for example, in a piping path in which a gas and a liquid can flow in a mixed manner, such as a distillation process, and can be used for the purpose of separating the gas and the liquid flowing in the piping. Alternatively, the expansion tank can be used for an application that functions as an expansion chamber (ie, a surge tank) that reduces pulsation transmitted through the pipe. Note that the present invention is not limited to the individual embodiments described below, and the embodiments can be changed and implemented.

FIG. 1 is a perspective view showing an example in which a container is constituted by a half-cracked body 1 of the first embodiment. FIG. 2 is a cross-sectional view when the container is constituted by the half cracked body of the first embodiment in the XX cross section of FIG. In the following description, the vertical direction ZZ in FIG. 2 is referred to as a pressing direction during welding. Further, the left-right direction YY in FIG. 2 is referred to as a flange width direction. The cross section XX is a cross section of a plane including the pressing direction ZZ at the time of welding and the width direction YY of the flange.

A pair of half-cracked body 1 and half-cracked body 2 are welded to form an expansion tank that is a hollow container. The half-cracked body 1 and the half-cracked body 2 are made of a thermoplastic resin, and the open end faces of the respective half-cracked bodies are welded together to form a hollow box-like container (expansion tank). It is preferable that the connection nipples 18, 28 and the like are integrally formed in the half-cracked body as in the present embodiment. In addition, an attachment stay or the like may be integrally formed in the half cracked body as appropriate.

The half crack body 1 according to the invention will be described in detail. The half-cracked body 1 has a flange 12 extending along the welding surface WS. In the present embodiment, the flange 12 is provided over the entire circumference of the open end edge of the half-cracked body 1. The flange 12 does not necessarily need to extend over the entire circumference of the open end edge, and there may be a portion that is not provided in part. The form of the welding surface WS is not particularly limited, such as a planar shape or a curved surface shape (for example, a cylindrical surface shape, a spherical surface shape, or a conical surface shape), and is appropriately selected according to the type of welding process to be employed and its requirements. In the present embodiment, the welding surface WS is planar.

In addition, the flange in a half crack body should just be a shape which can apply a pressure to welding surface WS substantially equally via a mutual flange, when welding the half crack bodies used as a pair. The shape of such a flange is not particularly limited, but in the welding process, in order to facilitate pressurization from the outside of the container to the flange, it has a flange that protrudes to the outer peripheral surface side of the half cracked body. Is preferred.

The flange 12 is provided with a portion where the half-cracked body 1 is welded to the other half-cracked body 2. In the present embodiment, the portion is provided as a ridge 13 protruding from the flange 12. The welded portion does not necessarily have to be in the form of a ridge, and may be a groove (concave groove) or a flat portion, and its specific form is not particularly limited. The part to be welded is preferably formed integrally with the flange in advance, but may be provided in addition to the flange. Further, the flange 12 may have a rim (not shown) that protrudes along the pressing direction ZZ during welding at the edge of the flange.

Hereinafter, the flange 12 (including the inner edge portion 121 and the outer edge portion 122), the first wall portion 11a (including the end edge portion 11a1), and the second wall are focused on the right side portion of the half-cracked body 1 in FIG. The relationship with the part 11b will be described. In the half-cracked body 1, a first wall portion 11a and a second wall portion 11b are provided in a portion that becomes a wall surface of the hollow portion of the container. The first wall portion 11a extends along the pressing direction ZZ at the time of welding at a position that substantially coincides with the outer edge 122 of the flange 12 in the flange width direction YY. The extending direction of the first wall portion may be inclined by about the draft taper angle. An end edge portion 11a1 (lower end portion in FIG. 2) on the flange side of the first wall portion 11a is connected to the inner edge portion 121 of the flange by the second wall portion 11b. With this configuration, in the section of the wall connected from the first wall portion 11a to the flange, a space is formed between the flange 12 and the second wall portion 11b so that the wall surface of the container is recessed inside the container. Such a space faces the outer space of the container. That is, such a space is open to and connected to an external space that spreads outside the space in which the container is placed.

In the present embodiment, the second wall 11b rises from the inner edge 121 of the flange 12 along the pressurizing direction ZZ at the time of welding, and extends toward the outside of the container substantially parallel to the flange 12 as it is. The first wall portion 11a is reached and connected. Since the half-cracked body 1 has such a second wall portion 11b, a rectangular parallelepiped space surrounded by the flange 12 and the second wall portion 11b is formed between the flange 12 and the second wall portion 11b. The The specific form of the second wall may be other than the present embodiment, as will be described later.

As described above, the half-cracked body 1 is configured to have the first wall portion 11a and the second wall portion 11b. With this configuration, the half-cracked body 1 has a characteristic outer shape particularly with respect to the positional relationship between the flange and the wall portion. For example, when the outer shape of the half-cracked body 1 is observed along the direction of pressurizing the half-cracked body 1 during welding from the upper surface side of the container, that is, from the top to the bottom of FIG. 2, it is blocked by the first wall portion 11a. Therefore, a part of the flange 12 cannot be visually recognized. In other words, the flange 12 and the first wall portion 11a have a non-visible region in the half-cracked body 1 that has a non-visible region that is not visible when the flange 12 is blocked by the wall portion when observed from the pressing direction ZZ. Is arranged in. In the half-cracked body 1 of the present embodiment, most of the flange 12 connected to the second wall portion 11b is a non-visible region when observed from the pressing direction ZZ. However, the range of the non-viewing region in the entire region of the flange, that is, the region including the viewing region and the non-viewing region is not particularly limited. For example, on the basis of the flange width direction YY, the ratio of the flange non-viewing area to the flange viewing area may be 1/3 or more, and all the flanges may be the non-viewing area. If the half-cracked flange has at least such a non-visible region, the extent to which the flange projects outward from the wall surface in the obtained container can be suppressed.

Similarly, for example, when the outer shape of the half-cracked body 1 is observed from the side surface side of the container, that is, from a direction substantially orthogonal to the direction in which the half-cracked body 1 is pressed during welding, the flange 12 and the second wall portion 11b are connected. The portion is a recess recessed into the inside of the container with respect to the surface on which the first wall portion 11a extends. In other words, the half-cracked body 1 is formed with a recess that is recessed in a direction substantially perpendicular to the pressing direction ZZ at the time of welding by a part of the wall portion and a part of the flange 12. This recess corresponds to the space surrounded by the flange 12 and the second wall portion 11b described above.
If such a hollow is formed in the half-cracked body, the extent to which the flange protrudes outside the wall surface in the obtained container can be suppressed.

The range in which the wall surface of the container is configured so as to have the first wall portion 11a and the second wall portion 11b described above corresponds to the section where the flange extends. However, such a range may be a partial section in the circumferential direction of the flange 12 and does not need to be configured in this way over the entire flange of the half-cracked body. In the half-cracked body 1 of the present embodiment, the wall surface of the container has a first wall portion 11a and a second wall portion 11b in a flange section corresponding to one side surface of the rectangular parallelepiped half-cracked body 1. ing. In the flange part of the other part of the half-cracked body 1, for example, as in the left part of the half-cracked body 1 in FIG. 2, the container wall 11 c is separated from the inner edge 121 of the flange as in the prior art. , And provided substantially straight along the pressing direction ZZ.

Although not essential, a rib extending along the pressing direction ZZ at the time of welding in a flange section corresponding to the section in which the first wall portion 11a and the second wall portion 11b are provided with respect to the flange 12 14 and 14 are preferably provided. The

ribs

14 and 14 are provided through the second wall portion 11b so as to connect the upper surface of the flange 12 (the surface facing the second wall portion) and the inner peripheral surface of the first wall portion 11a. Yes.
A plurality of

ribs

14 and 14 are preferably provided at a predetermined interval in the circumferential direction of the flange, and the rib interval is particularly preferably about 1 to 3 times the width of the flange 12.

Although not essential, as in the present embodiment, the

ribs

14 and 14 are preferably provided over the entire length of the first wall portion 11a in the pressing direction ZZ at the time of welding to the first wall portion 11a. . In the present embodiment, the rib 14 is further provided so as to be connected to the shoulder 16 (top surface) of the container. Moreover, the

ribs

14 and 14 may be provided in the inner peripheral surface and outer peripheral surface of the 1st wall part 11a so that the 1st wall part 11a may be penetrated.

When the half-cracked body 1 of the above embodiment is observed on the outer shape, the ribs 14 are arranged so as to connect each wall portion and the flange, and the following features are recognized. When observing the outer shape of the half-cracked body 1 from the upper surface side of the container, that is, from the top to the bottom of FIG. 2 from the direction in which the half-cracked body 1 is pressed at the time of welding, the rib 14, the flange 12 and the first wall portion 11 a The portions where the ribs 14 and the flanges 12 are connected are arranged in such a positional relationship as to have a non-visible region that is blocked by the first wall portion 11a and cannot be seen. In the half-cracked body 1, most of the portion where the rib 14 and the flange 12 are connected is a non-visible region when observed from the pressing direction ZZ, but the range of the non-visible region of the rib is particularly It is not limited. It is preferable that the half-cracked rib has at least such a non-visible region because the resulting container is less likely to interfere with the wall surface of the container placement location.

Moreover, the rib in a half crack body penetrates a part of wall part of a half crack body like the rib 14 in the half crack body 1, and connects both the outer peripheral surface and inner peripheral surface of a wall part, and a flange. It is preferable that they are arranged as described above. With such an arrangement, it is possible to increase the strength of the container obtained while suppressing interference of ribs with the wall surface of the container arrangement place.

On the other hand, the half crack body 2 has the same configuration as the half crack body in the prior art. The half-cracked body 2 has a flange 22 along the welding surface WS, and the flange 22 is provided with a protrusion 23 serving as a welding portion. The wall 21 of the half-cracked body 2 is provided straight from the inner edge of the flange 22 substantially along the pressing direction ZZ. In the present specification, the term “welded part” means a part to be welded or a welded part unless otherwise specified.

In this embodiment, the half-cracked body 1 and the half-cracked body 2 are welded to obtain an expansion tank as a container. Of course, the half-cracked body having the same configuration as the half-cracked body 1 is welded to each other. Containers can also be obtained.

It does not specifically limit as a thermoplastic resin which comprises the half cracks 1 and 2, The thermoplastic resin material which can be blow-molded, injection-molded, etc. and can be welded is selected and used. As the thermoplastic resin material, for example, an olefin resin such as a polypropylene resin or a polyamide resin can be preferably used. As long as they can be welded to each other, the pair of half-cracks may be made of different resins, but the same kind of resin, particularly the same resin, is preferable for increasing the welding strength. Various kinds of reinforcing materials such as talc and glass fiber may be blended with the thermoplastic resin. In this embodiment, the half crack body 1 and the half crack body 2 are formed of a polyamide resin.

The manufacturing method of the half crack body 1 and container (expansion tank) of the said embodiment is demonstrated.
Prior to the welding step, a thermoplastic resin is first molded to produce the half-cracked body 1 and the half-cracked body 2. Each half-cracked body is preferably manufactured by injection molding, but may be manufactured by other molding methods such as blow molding. When the half-cracked body has ribs, it is particularly preferable to produce the half-cracked body by an injection molding method. With respect to the mold structure and molding procedure used for injection molding, blow molding, and the like, known molds and procedures can be used and are not particularly limited.

When manufacturing the half-cracked body 1 of the above embodiment by injection molding, an injection mold is prepared, and the mold is closed in the pressing direction ZZ (vertical direction in FIG. 2) at the time of welding. An injection mold is placed to open. In the part inside the half-cracked body of the part corresponding to the first wall portion 11a and the part outside the half-cracked body corresponding to the second wall part 11b in the mold, the mold and the half-cracked body are undercut at the time of demolding. It is in a relationship. For these portions, a semi-cracked body 1 may be manufactured by using an appropriate slide mold or the like to eliminate the undercut. On the other hand, the half-cracked body 2 can be manufactured by ordinary injection molding.

After the half-cracked body 1 and the half-cracked body 2 are manufactured, both are welded to complete an expansion tank as a container. FIG. 3 shows a schematic diagram of a part of the process of welding both half-cracks. It is preferable to use hot plate welding or vibration welding for welding. However, the welding method is not limited to these, and known welding methods such as rotational welding, ultrasonic welding, induction heating welding, and laser heating welding can be appropriately employed. In the welding method, in a state in which the welded portion is heated to be in a molten (semi-molten) state, the

flanges

12 and 22 of both half-cracked

bodies

1 and 2 are pressed so as to be pressed against each other. Are welded and joined.

What is necessary is just to perform the pressurization of the

flanges

12 and 22 of both the

half crack bodies

1 and 2 as follows. For example, as shown in FIG. 3A, the flange 22 of the half-cracked body 2 is received and supported by a jig J1. The receiving jig J1 and the half-cracked body 2 are configured to be detachable in the pressurizing direction (vertical direction in FIG. 3), and the flange 22 is pressurized toward the other half-cracked body 1 by the receiving jig J1. be able to.

On the other hand, the half cracked body 1 is supported by the receiving jig J2 and the slide receiving jig J3. The receiving jig J2 is configured to be attachable to and detachable from the half-cracked body 1 in the pressing direction (up and down direction in FIG. 3). The receiving jig J3 is configured to be movable relative to the receiving jig J2 in the width direction of the flange (left and right direction in FIG. 3). With this configuration, the flange 12 and the second wall portion 11b of the half-cracked body 1 It is possible to fit in the space provided between (Fig. 3 (a)). In other words, when the slide receiving jig J3 comes to the closed position, the flange 12 of the half cracked body 1 can be pressed toward the other half cracked body 2 by the receiving jigs J2 and J3. When J3 comes to the open position, the receiving jig J2 and the slide receiving jig J3 are configured so that the half cracked body 1 can be attached to and detached from the receiving jig J2 and the slide receiving jig J3. .

With the receiving jig as described above, it is possible to perform welding such as hot plate welding or vibration welding while supporting the flange portions of both half-cracks so that they can be pressurized. When the welded portions provided on the

flanges

12 and 22 are heated to press the

flanges

12 and 22 in a molten state or a semi-molten state, the welded portions are deformed and integrated to complete the container (FIG. 3 ( b)).
When the receiving jigs J1, J2, and J3 exist so as to support the

flanges

12 and 22 from the back side as in the embodiment shown in FIG. 3, the pressure is directly applied to the flanges. It is performed sufficiently and the welding is more reliable.

Although not essential, it is preferable that the receiving jig exists so as to support the flange from the back side over the entire circumferential direction of the flange from the viewpoint of improving the reliability of welding. There may be a section where the receiving jig does not directly support the flange in a part of the flange in the circumferential direction, but it is preferable that there are fewer such sections.

The effect concerning the half crack body of the said embodiment is demonstrated.
The half-cracked body 1 can be welded to other half-cracked bodies, and can be a part of a container, a tubular body or the like. And the half crack body 1 has the space (dent) facing the external space of the container enclosed by the flange 12 and the 2nd wall part 11b. At the time of welding the half-cracked body 1, the flange 12 can be supported and pressurized by using the slide receiving jig J <b> 3 or the like using this space (indentation), so that reliable welding can be performed.

Further, the half-cracked body 1 has a first wall portion 11a extending along the pressing direction ZZ at the time of welding at a position substantially coincident with the outer edge portion 122 of the flange 12 in the flange width direction YY. And an inner edge 121 of the flange 12 and a second wall 11b connecting the first wall 11a. Therefore, in the half-cracked body 1, the first wall portion 11a is located on the outer side by the width of the flange 12 as compared with the half-cracked body in the prior art (for example, the lower half-cracked body 2 in FIG. 2). Due to such characteristics, the half-cracked body 1 has a large capacity as a container, and the space efficiency is enhanced. That is, the half-cracked body 1 can enhance the space efficiency while maintaining the certainty of welding. If such an effect is explained from the feature on the outer shape of the container, the half-cracked body 1 can suppress the extent to which the flange portion of the container protrudes outward from the wall surface, thereby reducing the space efficiency of the container placement location. Enhanced.

Further, the half-cracked body 1 of the above embodiment has

ribs

14 and 14 extending along the pressing direction ZZ at the time of welding in the section where the first wall portion 11a and the second wall portion 11b are provided. Moreover, the

ribs

14 and 14 penetrate the second wall portion 11b so as to connect the flange 12 and the first wall portion 11a. When the half-cracked body is configured in this manner, the

ribs

14 and 14 suppress the change in the distance between the flange 12 and the second wall portion 11b, so that a container or a pipe composed of the half-cracked body. The body and the like can be excellent in pressure resistance. In other words, the provision of the

ribs

14 and 14 can increase the possibility that the above disclosure can be applied to containers and pipes for uses where pressurized fluid is used.

Further, like the half-cracked body 1 of the above embodiment, the

ribs

14 and 14 penetrating the second wall portion 11b are provided over the entire length in the pressing direction ZZ at the time of welding to the first wall portion. If so, the degree of freedom in designing the receiving jig used for welding can be increased. That is, if the

ribs

14 and 14 are provided over the entire length of the first wall portion 11a, the flange 12 is indirectly pressed through the

ribs

14 and 14 by pressing the shoulder portion 16 of the half-cracked body 1. Therefore, it is not always necessary to use a slide receiving jig as shown in FIG.

As an example in which the slide receiving jig is not used, for example, FIG. 4 shows another welding form example in which the half-cracked body 1 is received and supported by the jig. In this embodiment, the half cracked body 1 is supported and welded by the receiving jig J4. The receiving jig J4 and the half-cracked body 1 are configured to be detachable in the pressurizing direction (vertical direction in FIG. 4). At the left side of the figure, the flange 12 is half-cracked by the receiving jig J4. Direct pressure can be applied toward the body 2. Moreover, in the location of the right side of a figure, the shoulder part 16 of the half crack body 1 will be pushed toward the other party half crack body by the receiving jig J4. Since the

ribs

14, 14 are provided in the half-cracked body 1 from the flange 12 over the entire length of the first wall portion 11 a, the pressing force applied to the shoulder portion 16 via the

ribs

14, 14 is applied to the flange 12. And the flange can be pressurized. In this welding mode, the receiving jig does not enter the space between the flange 12 and the second wall portion 11b. Even in such a welding form, if the rib 14 is provided on the half-cracked body 1, even if the slide receiving jig is omitted, sufficient pressure can be applied to the flange, and the reliability of the welding is ensured. Will improve. Furthermore, the design freedom of the receiving jig used at the time of welding can be increased.

In addition, although the effect which provides the rib 14 in the half crack body 1 was demonstrated here as an example, even if it is a half crack body used in order to form a container, a tubular body, etc. of another aspect, the same form By providing this rib, the same effect as described above can be obtained. For a half-cracked body used to form a container or tube of another aspect, for example, through a part of the wall part of the half-cracked body, both on the outer peripheral surface and the inner peripheral surface of the wall part What is necessary is just to provide a rib so that it may connect.

The invention is not limited to the embodiment described above, and can be implemented with various modifications. Although other embodiments of the invention will be described below, in the following description, portions different from the above-described embodiment will be mainly described, and detailed descriptions of the same portions will be omitted. Further, the embodiments described below can be implemented by combining some of them or replacing some of them.

FIG. 5 is a sectional view showing another example of a half-cracked body. In the half cracked body 1 ′ of the second embodiment shown in FIG. 5, the shapes of the first wall portion 11a and the flange 12 are the same as those of the first embodiment, but the shape of the second wall portion 11b ′ is different. . Further, in the present embodiment, the first wall portion 11a and the second wall portion 11b 'are provided on both the left and right sides of the drawing.

In the present embodiment, the second wall portion 11b ′ is welded in the pressurizing direction (vertical direction in the figure) and welded so that the second wall portion 11b ′ moves away from the flange 12 toward the outer edge 122 from the inner edge 121 of the flange 12. A portion provided to be inclined with respect to the surface WS is provided. Typically, the second wall portion 11b 'obliquely connects the flange inner edge 121 and the first wall portion 11a.

When the second wall portion 11 b ′ is in such a form, the capacity of a container or a tube obtained by welding the half cracked body increases. If the half-broken body has such a configuration, it becomes possible to arrange a container having a larger capacity, a pipe body having an increased cross-sectional area, and the like in a limited layout space. More enhanced.

From the viewpoint of enhancing the space efficiency, it is preferable that the first wall portion 11a and the second wall portion 11b ′ are provided on both side surfaces of the container so as to face each other as in the present embodiment. . When the container is box-shaped, it is preferable that the wall surfaces of the container connected to the flanges on the two opposite sides have a first wall portion 11a and a second wall portion 11b ', respectively.

Moreover, from a viewpoint of improving space efficiency, it is preferable to form a container, a tubular body, or the like by combining the half-cracks having the first wall portion 11a and the second wall portion 11b in pairs. In the description of each of the above-described embodiments, the embodiment in which the flange is provided so as to extend from the open end of the wall surface of the container toward the outside of the container has been described. There is no need to be. For example, the flange may be provided so as to extend from the wall surface of the container toward the inside of the container in a part of the flange, and is provided in a partial section in the circumferential direction of the open end of the half cracked body. It does not have to be.

In the description of each embodiment described above, the example of providing a very simple protrusion (13, 23) has been described for the detailed structure of the welded portion provided on the flange. However, as the structure of the welded portion, various known structures can be used besides this. Moreover, in the half crack body which makes a pair, the part welded provided in each half crack body may be made into a different structure. If necessary, a welding burr concealment or the like can be formed on the flange.

In the description of the above embodiment, the form in which the hollow container is obtained by welding the half-broken bodies is described. However, the pipe body (including the collecting pipe) is manufactured by welding the half-broken bodies. You can also The specific use of the container or tube is not particularly limited. For example, in the case of a container, it may be used for an expansion tank such as an air pipe, an expansion chamber, a surge tank, a resonator chamber, a cooling water tank, a reservoir tank, or a washer liquid tank. If it is a tubular body, it can be used for a supercharging system pipe, an intake manifold, an integrated air cleaner pipe, or the like.

The shape of the container may be box-shaped, and may be cylindrical or spherical. Further, the pipe body may have one pipe line or a plurality of pipe lines. The type of the tube may be a branch tube or a collecting tube. In addition, the pipe shape of the pipe body may be a straight tube shape or a curved tube shape.
The welding surface WS is appropriately determined according to various uses or the complexity of the shape.
The fluid filled in the container or the tube body may be a gas such as air or a liquid such as water. The fluid may be a pressurized fluid.

The above-mentioned half-cracked body can be used as a container, a tubular body or the like by welding, and can be used in various fields and has high industrial utility value.

DESCRIPTION OF SYMBOLS 1 Half crack 11a 1st wall part 11b 2nd wall part 12 Flange 121 Inner edge part 122 Outer edge part 13 Welding part (projection)
14 Rib 16 Shoulder WS Welding surface J1, J2, J3 Receiving jig YY Flange width direction ZZ Pressure direction during welding

Claims

A thermoplastic resin half-crack used for a process of forming a container or a tube by welding the end faces of a pair of thermoplastic resin half-cracks together,
The half-cracked body made of thermoplastic resin has a flange extending along the welding surface,
In at least a part of the circumferential direction of the flange,
The portion that becomes the wall surface of the container or tube has the first wall portion and the second wall portion,
The first wall portion extends along the pressing direction at the time of welding at a position substantially coincident with the outer edge of the flange in the width direction of the flange,
The second wall portion connects the inner edge portion of the flange and the first wall portion,
The space surrounded by the flange and the second wall faces the external space of the container or tube,
Half-cracked body made of thermoplastic resin.
In the section, a rib extending along the pressurizing direction at the time of welding is provided,
The thermoplastic resin half-crack according to claim 1, wherein the rib is provided through the second wall portion so as to connect between the flange and the first wall portion.
The thermoplastic resin half-crack according to claim 2, wherein the rib is provided over the entire length of the first wall portion in the pressurizing direction during welding.
The second wall portion has a portion provided so as to be inclined with respect to the pressurizing direction and the welding surface at the time of welding so as to move away from the flange toward the outer edge from the inner edge of the flange. The half-cracked body made of a thermoplastic resin according to any one of 3 above.
A thermoplastic resin half-crack used for a process of forming a container or a tube by welding the end faces of a pair of thermoplastic resin half-cracks together,
A wall or a wall surface of the container or tube and a flange extending along an edge of the wall;
The flange is a half-cracked body made of a thermoplastic resin having a non-visible region that is blocked by a wall portion and cannot be seen when viewed from the pressing direction during welding.
Ribs are provided that extend along the pressure direction during welding to connect the wall and the flange,
The thermoplastic resin half-cracked body according to claim 5, wherein the portion where the rib and the flange are connected has a non-visible region that is blocked by a wall portion and cannot be seen when viewed from the pressurizing direction during welding.
A thermoplastic resin half-crack used for a process of forming a container or a tube by welding the end faces of a pair of thermoplastic resin half-cracks together,
A wall or a wall surface of the container or tube and a flange extending along an edge of the wall;
A half-cracked body made of a thermoplastic resin in which a recess that is recessed in a direction substantially orthogonal to the pressing direction at the time of welding is formed by a part of the wall part and a part of the flange.
Ribs are provided that extend along the pressure direction during welding,
The thermoplastic resin half-crack according to claim 7, wherein the rib connects the wall portion and the flange in the recess.