JP5615124B2 - Resin valve body and manufacturing method thereof - Google Patents

Description

  The present invention relates to a resin valve body and a method for manufacturing the same, and particularly to a method for manufacturing a resin valve body and a resin valve body manufactured thereby.

It is a known technique to weld two resin molded products, and as a heating means thereof, for example, a method by heating the joint surface with a heat source such as a laser or an ultrasonic wave has been adopted.
However, even if such a method can be adopted as a means for welding two resin molded products, it is not possible to weld three or more resin molded products at a time.
Therefore, it is difficult to manufacture a valve body of a known AT car using a synthetic resin and also by welding.

  In principle, a method of welding two resin molded products by performing microwave irradiation as a heating means is conceivable. The method described in Patent Document 1 is just that method, and a thermoplastic resin string-like material as a welding medium is disposed in a groove provided on the welding surface of the resin molded product, and the two resin molded products are welded. The two resin molded products are welded by bringing the surfaces into close contact with each other and irradiating with microwaves.

  In addition, the method described in Patent Document 2 is a composition obtained by mixing a foaming agent and a microwave absorber, placed between a skin material and a base material, heated and foamed, and at the same time, The base material is welded.

JP 2000-233450 A JP 2000-229328 A

In the method of Patent Document 1, since a welding medium as a heating element is manufactured by extrusion molding, it is difficult to obtain a welding medium having a complex shape branched into two or more, and when a string-like material is used. However, the absorption of the microwave energy is not uniform, and even if the absorption of the microwave energy is uniform, the surrounding heat capacity is not uniform, so it is difficult to weld the two uniformly.
Patent Document 2 discloses that a composition obtained by mixing a foaming agent and a microwave absorber is placed between a skin material and a base material, heated and foamed, and at the same time, the skin material and the base material are welded together. Therefore, it is suitable for the entire joining that absorbs the microwave, but cannot be used when a part of the joining surface is welded so as not to leave a distortion in the molded product.

  Therefore, in order to solve the above problems, the present invention can uniformly weld the synthetic resin molded body even if there is a slight disturbance in the absorption of microwave energy and the surrounding heat capacity is not uniform. An object of the present invention is to provide a resin valve body that does not give strain to the synthetic resin molding and a method for manufacturing the same.

In the resin valve body according to the first aspect of the present invention, the resin valve body that houses a plurality of control valves for controlling the hydraulic pressure and the oil amount for performing automatic transmission in the automatic transmission is provided with the plurality of control valve housing parts or the Dielectric heating by microwaves sandwiched between a plurality of valve body resin molded bodies formed by dividing into three or more along the center line of the oil passage in the resin valve body, and the valve body resin molded bodies. And a welded layer that is welded by irradiating the microwave while applying a pressing force in the joining direction for joining the valve body resin molded bodies together.
The welded layer welded by irradiating microwaves to a microwave plate-like heating element that can be dielectrically heated by microwaves sandwiched between the valve body resin moldings is the heat generation of the microwave plate-like heating element. The microwave plate-like heating element is disposed between the valve body resin molded bodies, so that the microwave plate-like heating element and the valve body resin molded body are welded to each other. This refers to the welded layer formed by welding the valve body resin moldings around the corrugated heating element. In the present invention, one or both of these are included.
Here, the plurality of valve body resin molded bodies formed by dividing into three or more along the center line of the oil passage in the plurality of control valve housing parts or the resin valve body are electromagnetic valves, hydraulic valves, etc. The control valve has a substantially cylindrical shape, and the valve body resin molded body that holds the control valve is formed so as to be freely opened so that the control valve can be incorporated and removed during assembly. Since the oil passage also has a substantially circular cross section, the resin valve body may be divided into three or more along the control valve housing part or the center line of the oil passage. Note that the cross section of the oil passage is not limited to a substantially circular cross section as long as it can be divided symmetrically.

Moreover, the microwave plate-like heating element that can be dielectrically heated by microwaves is formed from a thermoplastic resin film kneaded with metal powder as a conductor, a thermoplastic resin film having a metal thin film, or a metal foil.

The microwave plate-like heating element that can be dielectrically heated by the microwave of the resin valve body according to the invention of claim 2 is formed in a shape along the joint surface of the plurality of valve body resin molded bodies. . Here, the shape along the joint surface of the valve body resin molded body means that the resin valve body is divided into three or more parts while leaving a predetermined width on the outer peripheral side and inner peripheral side of the joint surface of the valve body resin molded body. It is a shape along the surface. Of course, it does not exclude the formation of the same size as the joint surface.

The microwave plate-like heating element that can be dielectrically heated by the microwave of the resin valve body according to the invention of claim 3 is chamfered in all angles.
Here, the full-width chamfering process means that the corners of the plane of the microwave plate-like heating element are processed in an arc shape or obliquely, and it is sufficient if the energy of the microwave is concentrated and does not lead to the generation of a spark. The corner chamfer is determined by.

The microwave plate-like heating element that can be dielectrically heated by the microwave of the resin valve body according to the invention of claim 4 is provided with a through hole for positioning.
Here, the through-hole to be positioned is not limited as long as a projection is provided on the valve body resin molded body side and the microwave plate-like heating element is positioned there, and positioning accuracy is provided by providing a reference point with a plurality of projections. Can be raised.

According to a fifth aspect of the present invention, there is provided a method of manufacturing a resin valve body, wherein the number of resin valve bodies containing a plurality of control valves for controlling hydraulic pressure and oil amount for automatic transmission in an automatic transmission is increased to three or more. A plurality of valve body resin molded bodies formed by dividing along a valve housing part or a center line of an oil passage in the resin valve body are micro-electrically heated by microwaves between the valve body resin molded bodies. By sandwiching the corrugated plate-like heating element and applying a pressing force to the joining surface in the joining direction, the microwaves are irradiated to the two to weld them together.
Here, the plurality of valve body resin molded bodies divided into three or more along the center line of the oil passage in the control valve housing part or the resin valve body are control valves such as electromagnetic valves and hydraulic valves. The valve body resin molded body that holds the cylinder is formed so as to be freely opened when assembled, and the oil passage in the resin valve body has a substantially circular cross section. The resin valve body may be divided into three or more along the center line of the housing part or the oil passage.
The welded layer welded by irradiating microwaves to a microwave plate-like heating element that can be dielectrically heated by microwaves sandwiched between the valve body resin moldings is the heat generation of the microwave plate-like heating element. The microwave plate-like heating element is disposed between the valve body resin molded bodies, so that the microwave plate-like heating element and the valve body resin molded body are welded to each other. This refers to the welded layer formed by welding the valve body resin moldings around the corrugated heating element. In the present invention, one or both of these are included.
And while sandwiching the microwave plate-like heating element and applying a pressing force to the bonding surface in the bonding direction, by applying a pressing force that narrows the interval between the valve body resin molded bodies, More specifically, it is only necessary to determine the finish of the gap between the valve body resin molded bodies by controlling the microwave energy (controlling the temperature of the microwave plate-like heating element) and controlling the pressing force applied to the joint surface. The pressing force can be replaced with its own weight.

Further, a microwave plate-like heating element that can be dielectrically heated by microwaves is formed from a thermoplastic resin film kneaded with metal powder as a conductor, a thermoplastic resin film having a metal thin film, or a metal foil.

In the manufacturing method of the resin valve body according to the invention of claim 6 , the resin valve body is formed in a shape along the joint surface of the plurality of valve body resin moldings that can be dielectrically heated by microwaves.
Here, the shape along the joint surface of the valve body resin molded body means that the resin valve body is divided into three or more parts while leaving a predetermined width on the outer peripheral side and inner peripheral side of the joint surface of the valve body resin molded body. It is a shape along the surface. Of course, it does not exclude the formation of the same size as the joint surface.

In the method for manufacturing a resin valve body according to the seventh aspect of the invention, the microwave plate-like heating element that can be dielectrically heated by microwaves is chamfered in all angles.
Here, the full-width chamfering process means that the corners of the plane of the microwave plate-like heating element are processed in an arc shape or obliquely, and it is sufficient that the energy of the microwave is concentrated and does not lead to the generation of a spark.

In the method for manufacturing a resin valve body according to the eighth aspect of the present invention, the microwave plate-like heating element that can be dielectrically heated by microwaves is provided with a through hole for positioning.
Here, the through-hole to be positioned is not limited as long as a projection is provided on the valve body resin molded body side and the microwave plate-like heating element is positioned there, and positioning accuracy is improved by providing a reference point with a plurality of projections. be able to.

In the resin valve body according to the first aspect of the present invention, the resin valve body that houses a plurality of control valves for controlling the hydraulic pressure and the oil amount for performing automatic transmission in the automatic transmission is used as the plurality of control valve housing parts or the resin. A plurality of valve body resin moldings divided into three or more along the center line of the oil passage in the valve body and a microwave sandwiched between the valve body resin moldings can be heated by dielectric heating. A resin valve body comprising a microwave plate-like heating element and a weld layer welded by irradiating microwaves while applying a pressing force in a joining direction for joining the valve body resin molded bodies. In this way, the resin valve body is molded in advance into a shape divided into three or more along the center line of the oil passage in the plurality of control valve housing parts or the resin valve body, and these are welded by a microwave plate heating element. Thus, even a valve body having a complicated shape can be easily manufactured. In particular, by using a microwave plate-like heating element, when the microwave plate-like heating element that can be dielectrically heated by irradiation with microwaves is heated, the microwave plate-like heating element that can be dielectrically heated by the microwave becomes thin. Since the heat generation temperature can be increased uniformly, stable welding is possible, and the resin valve body can be more easily manufactured. Therefore, with a conventional metal valve body, cutting is necessary, and removal of machining scraps and the like of the cutting is necessary, but since the machining and cleaning can be simplified, productivity is improved. improves. In addition, since the heat capacity of the microwave plate-like heating element that can be dielectrically heated by microwaves is small, the heat generation time is extremely short, and mass production is possible.
Furthermore, when three or more valve body resin moldings are welded at once, the degree of heating of each welded portion can be made uniform by adjusting a microwave plate heating element made of conductive plate-like synthetic resin. It is possible to make adjustments. In addition, if the shape of the microwave plate heating element that can be dielectrically heated by microwaves is set based on the heat capacity, a uniform molten state can be obtained, and the valve body resin molded body can remain thermally deformed. Absent.
Therefore, even if there is a slight disturbance in the absorption of microwave energy, the synthetic resin molding can be uniformly welded even if the heat capacity of the surrounding valve body resin molding is not uniform, and the valve body It becomes a resin valve body which does not give distortion to a resin molding.

Further, dielectric heating freely microwave plate heating element, since it is one formed from a thermoplastic resin film or a metal foil, having a thermoplastic resin film or a metal thin film obtained by kneading metal powder is a conductor, a metal powder The heat generation characteristics can be arbitrarily set according to the amount of metal or the thickness of the metal thin film or metal foil.

The microwave plate-like heating element that can be dielectrically heated by the microwave of the resin valve body according to the second aspect of the present invention is formed in a shape along the joint surface of the plurality of valve body resin molded bodies. In addition to the effect of the first aspect, by forming the microwave plate-like heating element in a shape along the joint surface of the valve body resin molded body in this way, it is possible to ensure even a complicated shape of the valve body. Welding is possible, making it possible to manufacture an integrated valve body.

Since the microwave plate-like heating element that can be dielectrically heated by the microwave of the resin valve body according to the invention of claim 3 is chamfered at all angles, either one of claims 1 to 2. In addition to the effect described in the item, since the concentration of the microwave energy does not occur, there is no spark and the valve body resin molding is not burned.

Since the microwave plate-like heating element that can be dielectrically heated by the microwave of the resin valve body of the invention of claim 4 has a through hole for positioning, any one of claims 1 to 3 is provided. In addition to the effects described in item 1, the microwave plate-like heating element can be accurately positioned with respect to the joint surface of the valve body resin molded body.

In the method of manufacturing a resin valve body according to the fifth aspect of the present invention, the number of resin valve bodies for accommodating a plurality of control valves for controlling hydraulic pressure and oil amount for performing automatic transmission in an automatic transmission is set to three or more , and the plurality of control valves A plurality of valve body resin molded bodies formed by being divided along the center line of the oil passage in the housing part or the resin valve body are microwaves that can be dielectrically heated by microwaves between the valve body resin molded bodies. Since the plate-like heating element is sandwiched and both are welded by irradiating the microwave to the plate-like heating element, the microwave plate-like heating element is heated when the microwave plate-like heating element is heated by irradiating the microwave. The heat generation temperature of the body can be increased uniformly, stable welding is possible, and the plastic valve body is easier It is possible to manufacture. In particular, in the case of a conventional metal valve body, it is necessary to perform cutting processing or to remove cutting waste and the like. However, in the present invention, since the processing and cleaning can be simplified, productivity is improved. Moreover, since the heat capacity of the microwave plate-like heating element is small, the heat generation time is very short, and mass production is possible. Then, a valve body resin molded body is formed by dividing the valve body into three or more along the center line of the oil passage in the control valve housing part or the resin valve body, and these valve body resin molded bodies are formed in a microwave plate shape. It is possible to manufacture even complicated shapes by welding by heating the heating element.
Then, the microwave plate-like heating element is sandwiched between the valve body resin moldings while applying a pressing force to the bonding surface in the bonding direction, and the microwave energy is applied. Finishing accuracy can be improved by control (temperature control of the microwave plate-like heating element) and control of the pressing force applied to the joint surface. The pressing force can be replaced with its own weight.
Furthermore, even when three or more valve body resin moldings are welded at once, the degree of heating of each welded portion can be made uniform by adjusting the microwave plate-shaped heating element that can be dielectrically heated by microwaves. It is possible to make adjustments. Moreover, if the shape of the microwave plate-like heating element is set in consideration of the heat capacity, a uniform molten state can be obtained, and the valve body resin molded body does not leave a strain that is thermally deformed.
Therefore, even if there is a slight disturbance in the absorption of microwave energy, even if the heat capacity of the surrounding valve body resin molding is not uniform, the valve body resin molding can be uniformly welded, and It becomes the manufacturing method of the resin-made valve body which does not give distortion to the said valve body resin molding.

Also, a microwave plate-like heating element that can be dielectrically heated by microwaves is formed from a thermoplastic resin film kneaded with a metal powder as a conductor, a thermoplastic resin film having a metal thin film, or a metal foil. The heat generation characteristics can be arbitrarily set according to the amount of the metal powder or the thickness of the metal thin film or the metal foil.

In the method of manufacturing a resin valve body according to the sixth aspect of the present invention, the resin valve body is formed in a shape along the joint surface of the plurality of valve body resin molded bodies. In addition to the effect of the fifth aspect, by forming the microwave plate-like heating element in a shape along the joint surface of the valve body resin molded body in this way, the complicated shape of the valve body can be ensured. Welding is possible, making it possible to manufacture an integrated valve body.

In the production method of the resin-made valve body of the invention of claim 7, since it is obtained by the chamfering process to full width of the dielectric heating freely microwave plate-like heating element by microwaves, according to claim 5 or claim 6 In addition to the above effect, the concentration of microwave energy does not occur, so there is no spark and no burning of the valve body resin molding.

In the production method of the resin-made valve body of the invention of claim 8, since the through hole for positioning the dielectric heating freely microwave plate-like heating element by microwaves are bored, of claims 5 to 7 In addition to the effect described in any one of the items, the microwave plate-like heating element can be accurately positioned with respect to the joint surface of the valve body resin molded body.

FIG. 1 is a conceptual diagram illustrating a manufacturing process for explaining an assembling process of a resin valve body according to an embodiment of the present invention, where (a) is an assembling conceptual diagram, and (b) is a completed drawing before assembling welding. A manufacturing process is shown. FIG. 2 is a partial sectional view of the resin valve body according to the embodiment of the present invention. FIG. 3 is a plan view of a microwave plate-like heating element used in the resin valve body according to the embodiment of the present invention. The basic shape is a plan view (a), the perforated shape is a plan view (b), and an oval shape. A plan view (c) and a plan view (d) of a mesh shape are shown. FIG. 4 is an explanatory view for explaining the relationship between the microwave plate-like heating element used in the resin valve body according to the embodiment of the present invention and the joining surface. FIG. 4 (a) shows a case where the joining surface is narrow (b). This is the case where the joint surface is wide. FIG. 5 is a time-temperature characteristic diagram when the microwave plate-like heating element used in the resin valve body according to the embodiment of the present invention is irradiated with microwaves. FIG. 6 is an explanatory diagram showing a microwave output pattern used in the resin valve body according to the embodiment of the present invention. FIG. 7 is a time-temperature characteristic diagram of the microwave plate heating element used in the resin valve body according to the embodiment of the present invention. FIG. 8 is a process diagram of a method for manufacturing a resin valve body according to an embodiment of the present invention.

[Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same symbols and the same reference numerals in the present embodiment are the same or corresponding functional parts, and therefore, duplicate description is omitted here.
1 to 5, first, an overall configuration of a resin valve body according to an embodiment of the present invention will be schematically described.
After a plurality of control valves for controlling hydraulic pressure and oil amount for automatic transmission in an automatic transmission are accommodated, the resin valve body 100 for accommodating a linear solenoid (one in the figure) is accommodated in two or more, and the control valve accommodating portion A plurality of valve body resin molded bodies 11, 12, 13, 14, 15, 16 are formed along the center line and divided into six pieces in the present embodiment. A linear solenoid valve A as a control valve shown in this embodiment is composed of an electromagnetic control unit A1 and a valve unit A2. The number of divisions is not limited to six, but can be set to a desired number depending on the shape of the valve body and the shape of the control valve and oil passage accommodated therein. At this time, the center line of the oil passage in the resin valve body 100 may be used instead of the control valve as in the embodiment of the present invention, and further divided by the center lines of both the control valve housing part and the oil passage. It is also possible.

  Between these valve body resin molded bodies 11, 12, 13, 14, 15, 16 microwave plate heating elements 21, 22, and 23 that can be dielectrically heated by microwaves made of conductive plate synthetic resin. , 24, 25 are arranged so as to narrow the space between the microwave plate-like heating elements 21, 22, 23, 24, 25, that is, by applying a pressing force in the stacking direction and irradiating the microwaves thereto. Are to be welded.

Next, the resin valve body according to the present embodiment will be described in detail.
Valve body resin moldings 11, 12, 13, 14, 15, and 16 have opening surfaces (end surfaces) along the center lines of a plurality of control valve housing parts that control oil pressure and oil amount for automatic transmission in an automatic transmission. In the present embodiment, there are six resin valve bodies 100 formed and accommodating the plurality of control valves, that is, upper (U), middle (1), middle (2), middle (3) in order from the top. , Middle (4), and lower (L).
The resin valve body 100 is conventionally made of metal, and is manufactured by casting, cutting, etc., and in this embodiment, is made of synthetic resin, divided into six parts, and then molded. It is welded and integrated.

As shown in FIG. 1, the valve body resin molded bodies 11, 12, 13, 14, 15, and 16 are laminated, and in order to weld each of the layers, a microwave plate heating element 21 is provided between the layers. 22, 23, 24, 25 are provided, but if necessary, recesses, grooves, holes, and protrusions are provided on both surfaces of each layer, and after all layers are welded, these recesses and grooves Then, the hole and the convex are connected to each other, and the intended function is exhibited.
Therefore, microwave plate-like heating elements 21, 22, 23, 24, and 25, which will be described later, are formed in a shape that matches the shape.

  The microwave plate-shaped heating elements 21, 22, 23, 24, and 25 are sandwiched between valve body resin molded bodies 11, 12, 13, 14, 15, and 16, and are irradiated with microwaves to generate microwaves. The plate-shaped heating elements 21, 22, 23, 24, and 25 generate heat, and the valve body resin molded bodies 11, 12, 13, 14, 15, and 16 are welded. In a state of being sandwiched between the joint surfaces of the valve body resin molded bodies 11, 12, 13, 14, 15, and 16, which are the objects to be welded, a pressing force is applied, and microwaves are irradiated and heated. If the microwave plate-like heating elements 21, 22, 23, 24, and 25 are too thick, there is a risk that voids will be generated between the valve body resin molded bodies 11, 12, 13, 14, 15, and 16, and burrs may be generated. Therefore, it is preferable that the microwave plate-like heating elements 21, 22, 23, 24, and 25 made of conductive plate-like synthetic resin have a thickness of 2 mm or less, preferably 1 mm or less. Of course, even if the entire thickness is not uniform, the thickness can be changed in consideration of the bonding area, mechanical strength, and the like.

In particular, the thickness of the microwave plate-like heating elements 21, 22, 23, 24, 25 is 2 mm or less, preferably 1 mm or less when the microwave plate-like heating elements 21, 22, 23, 24, 25 are sandwiched. Since the gap between the valve body resin molded bodies 11, 12, 13, 14, 15, 16 is 2 mm or less, preferably 1 mm or less, the microwave plate-like heating elements 21, 22, 23, 24, 25 are as thin as possible. Is preferably used. Then, valve body resin molded bodies 11, 12, 13, 14, 15 that come into contact with the microwave plate-shaped heating elements 21, 22, 23, 24, 25 by the heat generated by the microwave plate-shaped heating elements 21, 22, 23, 24, 25 are used. , 16 contact surface in the joint surface and the vicinity of the contact surface are melted or softened, and the valve body resin molded body 11, 16 is pressed by the pressure applied to the valve body resin molded body 11, 12, 13, 14, 15, 16. The gap between 12, 13, 14, 15, 16 is reduced. In the experiments conducted by the inventors, the welding error was such that a welding error of 0.01 mm or less or 0.005 mm or less occurred, and if a predetermined pressing force was ensured, it was possible to perform highly accurate joining. .
The pressing force at the time of welding at this time is the microwave plate-like heating elements 21, 22, 23, 24, 25 sandwiched between the valve body resin molded bodies 11, 12, 13, 14, 15, 16 The pressing force is applied in the direction of decreasing the volume of the. Here, if it exceeds 2 mm, the gap when the micro-heating element is arranged between the synthetic resin moldings is large, and the gap tends to remain between the synthetic resin moldings after being pressed and welded.

Moreover, the microwave plate-shaped heating elements 21, 22, 23, 24, and 25 used in the present embodiment are, for example, as shown in FIGS. As the body 20 (21, 22, 23, 24, 25), R (R) as a chamfer is formed at the corner of the plane. By this chamfering, concentration of microwave energy to be irradiated does not occur, so that generation of sparks and burning of the valve body resin molded bodies 11, 12, 13, 14, 15, and 16 are prevented. The chamfer is preferably larger, and is set based on the width of the product to be welded and the width of the microwave plate heating element. In addition, the chamfering may be chamfered into an oblique straight line having a plane angle of 90 degrees or more if no spark is generated other than the R shape. Then, as shown in FIG. 1 (a) as microwave plate-like heating elements 21, 22, 23, 24, 25, the overall planar shape is a valve body resin molded body 11, 12, 13, 14, 15, 16, and the width of the joint surface of the valve body resin molded body 11, 12, 13, 14, 15, 16 as shown in FIG. 4 (a) or 4 (b). The width is set narrower than the width. In this manner, the width of the microwave plate-like heating elements 21, 22, 23, 24, 25 is made smaller than the width of the joint surface of the valve body resin molded bodies 11, 12, 13, 14, 15, 16 at the time of welding. The molten resin is prevented from protruding from the surface.

  Of course, the size and shape of the microwave plate-like heating elements 21, 22, 23, 24, 25 are determined by the shape and structure of the valve body resin molded bodies 11, 12, 13, 14, 15, 16, etc. The more complicated the shape and structure of the valve body resin molded body 11, 12, 13, 14, 15, 16 is, the more complicated the joint surface that needs to be welded, and the need for more accurate welding. Become. In such a case, as shown in FIGS. 3B to 3D, the microwave plate-like heating element 20 (21, 22, 23, 24, 25) is provided with a hole 20a as a through hole. Or a mesh shape 20c in which the microwave plate-like heating elements 21, 22, 23, 24, and 25 themselves are formed in a net-like shape are provided. Can be formed. The mesh shape 20c in which the through-holes are formed in a net shape is a rectangular opening in FIG. 3D, but may be a circular, triangular, parallelogram or the like opening.

In particular, the mesh shape 20c of FIG. 3 (d) of the microwave plate-like heating element 20 (21, 22, 23, 24, 25) has a plurality of holes in rows and columns and is joined by a matrix thereof. It is. It is suitable for use when the bonding area is large.
In particular, the perforated hole 20a and the oval perforated shape 20b of the microwave plate-like heating element 20 (21, 22, 23, 24, 25) shown in FIGS. Therefore, the ambient temperature rise is highly efficient and the welding operation speed of the microwave plate-like heating element 20 (21, 22, 23, 24, 25) can be increased.

  In addition, the microwave plate-like heating elements 21, 22, 23, 24, and 25 are provided with the perforated holes 20a and the oval perforated shape 20b as described above, or the mesh shape 20c. The microwave plate-like heating element 21 is placed at a predetermined position on the joint surface by inserting the perforation hole 20a, the oval perforation shape 20b, and the mesh shape 20c into a positioning projection such as a minute projection (not shown). , 22, 23, 24, 25 can be welded while accurately positioning. In particular, the microwave plate-like heating elements 21, 22, 23, 24, and 25 are suitable for sandwiching a specific complex shaped sheet. The minute positioning protrusions have a height of about 2/3 to 1/3 of the thickness of the microwave plate-like heating elements 21, 22, 23, 24, 25, and are difficult to affect the welding. Workability is improved.

Further, by using the through-holes of the perforated hole 20a, the oval perforated shape 20b, and the mesh shape 20c, a minute (not shown) formed in the valve body resin molded body 11, 12, 13, 14, 15, 16 is formed. The protrusions are inserted to align the planar shape of the valve body resin molded bodies 11, 12, 13, 14, 15, 16 and the microwave plate-like heating elements 21, 22, 23, 24, 25, and then welded. As a result, assembly welding with high accuracy can be performed.
The through holes such as the perforation holes 20a, the oval perforation shape 20b, and the mesh shape 20c provided in the microwave plate-like heating elements 21, 22, 23, 24, and 25 correspond to the corresponding valve body resin moldings. 11, 12, 13, 14, 15, 16, that is, by providing projections corresponding to through holes or the like on the surface of the welded portion of each layer, microwave plate-like heating elements 21, 22, 23 are provided on the joint surface. 24, 25 can be accurately positioned, and the time required for setting the microwave plate-like heating elements 21, 22, 23, 24, 25 can be shortened.

  In this case, when the microwave plate-like heating elements 21, 22, 23, 24, 25 are thermoplastic resin films kneaded with metal powder as a conductor, the valve body resin molded bodies 11, 12, 13, 14, 15, 16 and the resin forming the microwave plate-like heating elements 21, 22, 23, 24, 25 are the same material as each other, and are sufficiently melted and mixed, It becomes possible to improve the adhesive strength, and the improvement of such mechanical strength will improve the strength of various members obtained by welding, and the valve body resin molded bodies 11, 12, 13, 14, 15, 16 can be integrated, and the reliability of the resin valve body 100 according to the embodiment of the present invention is enhanced. Although described here for reference, the shape of the microwave plate-like heating element 20 shown in FIG. 3 is a part of the microwave plate-like heating elements 21, 22, 23, 24, 25 used in the embodiment of the present invention. It is described for the sake of explanation as applied to the above, and is not used in this shape.

  In the embodiment of the present invention, the microwave plate-like heating elements 21, 22, 23, 24, and 25 are basically made of a thermoplastic resin and a metal powder. As the thermoplastic material, known thermoplastic materials such as engineering plastics and super engineering plastics can be used. Specific examples include polyamide (nylon, aromatic polyamide, etc.), polyacetal, polycarbonate, modified polyphenylene ether, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), glass fiber reinforced polyethylene terephthalate, and cyclic polyolefin. Super engineering plastics include polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), polysulfone, polyethersulfone, amorphous polyarate, liquid crystal polymer, polyetheretherketone (PEEK), thermosetting polyimide, and polyamideimide. Etc.

In the resin valve body 100 according to the embodiment of the present invention, what kind of thermoplastic material is used is determined by considering compatibility with the valve body resin moldings 11, 12, 13, 14, 15, and 16. Determined.
For example, if the material of the valve body resin molded body 11, 12, 13, 14, 15, 16 is polyethylene, the resin used for the microwave plate heating elements 21, 22, 23, 24, 25 is also polyethylene, If the material of the body resin moldings 11, 12, 13, 14, 15, 16 is PPS resin, the resin material used for the microwave plate-like heating elements 21, 22, 23, 24, 25 is also made of PPS resin. Microwave plate heating elements 21, 22, 23, 24, 25 obtained by molding using the same resin as that constituting the valve body resin molded bodies 11, 12, 13, 14, 15, 16, etc. Is used to optimize the resin compatibility between the valve body resin molded bodies 11, 12, 13, 14, 15, 16 and the microwave plate-like heating elements 21, 22, 23, 24, 25. of Preferred. Even if the material of the valve body resin molded body 11, 12, 13, 14, 15, 16 and the resin material used for the microwave plate heating elements 21, 22, 23, 24, 25 are different, the weldability is affected. It can be used unless given.
Usually, as a material constituting the microwave plate-like heating elements 21, 22, 23, 24, 25, urethane resin, acrylic resin, PPS resin, polyamide resin or the like is used as the microwave plate-like heating elements 21, 22, 23, 24. , 25 is selected as the resin used.

As a metal to be a metal powder used for the microwave plate-like heating elements 21, 22, 23, 24, 25, it is possible to select and use a metal such as copper, iron oxide, or aluminum as shown in FIG. it can. Furthermore, a powder obtained by oxidizing a metal can also be used as the metal powder. These metal powders have a median diameter measured by the laser diffraction / scattering method, that is, the particle diameter when the number or mass larger than a certain particle diameter accounts for 50% of the total powder in the particle size distribution of the powder. The median diameter is preferably 3 μm to 30 μm.
Of course, the value of the particle diameter measured by the screening test can be in the range of 1 μm to 100 μm.

  Here, the “sieving test” refers to a test method for measuring the particle size distribution by sieving the powder to be measured using a standard sieve having openings defined by JIS-Z-8801. Is. It is a method of measuring particle size and particle size distribution using a standard sieve. The expression of the particle size and the particle size distribution is expressed as a ratio of the used sieve opening (μm) and the remaining amount on the sieve (oversize) or the total amount passing under the sieve (undersize).

The microwave plate-like heating elements 21, 22, 23, 24, and 25 can employ the same metal as when metal powder is used as a metal thin film or metal foil coated on a thermoplastic resin film. These metal thin films and metal foils may be thin enough to be supported on a thermoplastic resin film, and usually have a thickness within a range used as a metal thin film or metal foil. Therefore, it is sufficient that a vapor-deposited and sputtered metal thin film or metal foil of about 0.01 mm or less is formed.
Moreover, it can replace with a metal thin film only by metal foil, and can be set as a plate-shaped microwave plate-shaped heat generating body, without making it carry | support on a thermoplastic resin film. In particular, at this time, the valve body resin molded body 11, 12, 13, 14, 15, 16 as the synthetic resin molded body needs to be a thermoplastic resin.
In any case, in the resin valve body 100 according to the embodiment of the present invention, the microwave plate-like heating elements 21, 22, 23, 24, 25 that can be dielectrically heated by microwaves are metal powders that are conductors. What is necessary is just what was formed as a thermoplastic resin film which knead | mixed or as a thermoplastic resin film which has a metal thin film, or metal foil.

As the valve body resin moldings 11, 12, 13, 14, 15, and 16 welded by the microwave plate-like heating elements 21, 22, 23, 24, and 25 of the present embodiment, basically, a thermoplastic resin is used. Any molded body may be used. As the thermoplastic resin, a known thermoplastic resin can be used, but what kind of thermoplastic resin is used is determined by the conventional concept such as the use and shape of the thermoplastic resin molded body. The
Actually, as the material constituting the valve body resin molded body 11, 12, 13, 14, 15, 16, a polyolefin resin such as polyethylene resin or polypropylene resin, PPS resin, polyamide resin or the like is used as the valve body resin molded body 11. , 12, 13, 14, 15, 16 is selected as a resin. Since the microwave plate-like heating elements 21, 22, 23, 24, and 25 can be heated to a high temperature, they can be applied to high melting point resins such as PPS.
Further, the valve body resin molded body 11, 12, 13, 14, 15, 16 contains a known resin additive such as a colorant, a plasticizer, an antioxidant, a filler, etc. with respect to the thermoplastic resin. Can be made.

  That is, as the microwave plate-like heating elements 21, 22, 23, 24, 25, when a thermoplastic resin containing metal powder such as copper powder is employed, the thermoplastic resin is molded into a valve body resin. The same resin as the thermoplastic resin constituting the bodies 11, 12, 13, 14, 15, 16 is preferable. If it is the same resin, since it is excellent in compatibility with the resin which comprises the microwave plate-shaped heating elements 21, 22, 23, 24, 25, it can be set as the product excellent in the welding strength after welding.

  The laminated shape of the valve body resin molded bodies 11, 12, 13, 14, 15, 16 of the embodiment of the present invention may be arbitrarily laminated. For example, as shown in FIG. However, it may be formed by overlapping them. In this case, a concave body and a groove are provided on both surfaces of each layer, and by stacking these layers, a molded body in which a flow path or the like is formed can be obtained.

As a microwave generator for heating the microwave plate-like heating elements 21, 22, 23, 24, and 25 used in the present embodiment, any form that can irradiate microwaves may be used. A microwave generator can be used.
Further, in order to uniformly irradiate the microwave, the wall structure of the housing device and the structure for expanding the sales of the molded valve body resin 11, 12, 13, 14, 15, 16 placed inside. It is desirable to optimize the structure, shape, rotation conditions, etc. of the turntable on which the valve body resin molded bodies 11, 12, 13, 14, 15, 16 are placed.

Next, welding of a resin valve body according to a specific embodiment of the present invention will be described.
As a welding method, for example, as shown in FIG. 4, a cross section of a main part of a welded portion for explaining the embodiment is shown.
Each layer of the valve body resin molded body 11, 12, 13, 14, 15, 16 is made of, for example, a thermoplastic resin such as PPS, and various additives for resin are blended as necessary.
As shown in FIG. 4A, when welding the welded portions 11a and 12a of the joint surfaces of the valve body resin molded bodies 11 and 12 having a width of 3 mm, a microwave plate-like heating element is formed at the center of the welded portion. 21 will be provided. For example, when the mutual width of the welded portions 11a and 12a is 3 mm, the width of the microwave plate-like heating element 21 installed at the center is preferably about 0.5 to 2.0 mm. If it is less than 0.5 mm, it may not be possible to sufficiently heat-weld, and if it exceeds 2 mm, the resin on the joint surface of the valve body resin molded bodies 11 and 12 may be melted excessively, and burrs may occur. is there.

  Similarly, as shown in FIG. 4 (b), when the thick portions of the valve body resin molded bodies 11 and 12 having a width of about 5 mm are welded, the width of the microwave plate heating element 21 is 1.5 to. About 4 mm is preferable, and when the width of the microwave plate-shaped heating element 21 is too narrow or too wide, the same problem as the former occurs.

The metal powder contained in the microwave plate-like heating elements 21, 22, 23, 24, and 25 of the present embodiment is 30 to 80% by weight, and particularly preferably 50 to 70% by weight. If it is less than 30% by weight, there is a possibility that it will not be heated sufficiently efficiently. If it exceeds 80% by weight, the amount of resin to be used is reduced, so that the microwave plate heating elements 21, 22, 23, 24, 25 And the valve body resin molded body 11, 12, 13, 14, 15, 16 may be difficult to exert a strong welding strength by making the resin compatible.
The microwave plate-like heating elements 21, 22, 23, 24, and 25 made of such a metal powder-containing resin are sheet-like microwave plate-like heating elements 21 formed by extrusion molding or injection molding of a metal powder-containing thermoplastic resin. , 22, 23, 24, and 25, and further thinned by further pressing and extending as necessary.

  In this way, microwaves are formed between the valve body resin molded bodies 11, 12, 13, 14, 15, 16 and the valve body resin molded bodies 11, 12, 13, 14, 15, 16 constituting the welded material. Plate body heating elements 21, 22, 23, 24, 25 are installed, and valve body resin molded bodies 11, 12, 13, 14, and 25 are interposed via microwave plate heating elements 21, 22, 23, 24, 25. The layers 15 and 16 are stacked, and the microwave plate-like heating elements 21, 22, 23, 24, and 25 are irradiated with microwaves. At that time, the valve body resin moldings 11, 12, 13, 14, 15, 16 are sufficiently welded between the respective layers of the valve body resin moldings 11, 12, 13, 14, 15, 16. It is preferable that each layer is pressurized with a pressure of 0.1 to 5.0 MPa. When microwaves are irradiated with an output of 0.5 to 10 kW in such a pressurized state, the microwave plate-like heating elements 21, 22, 23, 24, and 25 are heated and the valve body resin moldings 11, Since the surface of the welded portion in the joint surface of 12, 13, 14, 15, 16 begins to melt, adjustments such as weakening the applied pressure can prevent the occurrence of burrs and improve the dimensional accuracy of the product after welding Can be.

At this time, as shown in FIG. 6, the output of the microwave generator is rapidly increased, and the output is changed to the softened and molten state of the microwave plate-like heating elements 21, 22, 23, 24, 25. The molten state is controlled by adjusting the output so that the microwave plate-like heating elements 21, 22, 23, 24, and 25 have a uniform temperature.
At this time, as shown in FIG. 5, the temperature characteristics of the microwave plate-shaped heating elements 21, 22, 23, 24, and 25 quickly rise to the melting temperature and become a predetermined fusion temperature, usually within 30 seconds. It becomes the fusing temperature. However, the temperature characteristics of the start-up of the microwave plate-like heating elements 21, 22, 23, 24, and 25 rise early when the output is increased, as shown by the white arrows.
When the microwave plate-shaped heating elements 21, 22, 23, 24, and 25 reach the fusion temperature, the valve body resin molded bodies 11, 12, 13, 14, 15, and 16 are melted tightly by the pressing force in the joining direction. Worn. Here, when the microwave plate-like heating elements 21, 22, 23, 24, and 25 generate heat, the resin of the microwave plate-like heating elements 21, 22, 23, 24, and 25 melts, and further, the microwave plate-like heating elements. Since the resin in the welded portion of the valve body resin molded body 11, 12, 13, 14, 15, 16 in contact with the bodies 21, 22, 23, 24, 25 melts, the microwave plate heating elements 21, 22, 23 , 24, 25 and the resin of the valve body resin molded body 11, 12, 13, 14, 15, 16 are bonded to form a weld layer. At this time, the resin of the welded portion of the valve body resin molded body 11, 12, 13, 14, 15, 16 is not only the contact portion in contact with the microwave plate-like heating elements 21, 22, 23, 24, 25, but also its vicinity. In this case, a weld layer is also formed between the valve body resin molded bodies 11, 12, 13, 14, 15, and 16. Here, when the microwave plate-like heating elements 21, 22, 23, 24, 25 are thermoplastic films or metal foils having a metal foil film, between the valve body resin molded bodies 11, 12, 13, 14, 15, 16 Only the weld layer is formed.

  After the valve body resin molded bodies 11, 12, 13, 14, 15, 16 are heated and welded by such a microwave generator, the valve body resin molded bodies 11, 12, 13, 14, 15, 16 are used. Is removed from the microwave generator and allowed to cool, thereby terminating the welding process. Or when it is necessary to perform a heating process twice or more, the microwave irradiation after the 2nd time will be performed either before and after standing_to_cool.

  Also, as shown in FIG. 6, it is preferable to perform control such as raising or lowering the output after a certain time has elapsed (for example, 30 seconds) after microwave irradiation.

The resin valve body configured as described above is manufactured as shown in FIG.
First, from among the molded valve body resin molded bodies 11, 12, 13, 14, 15, and 16, first, the microwave plate-like heating element 21 is formed based on the lower (L) valve body resin molded body 11. The middle (4) valve body resin molded body 12 is placed so as to sandwich the microwave plate-like heating element 21 between the lower (L) valve body resin molded body 11.

Further, a microwave plate-like heating element 22 is arranged at an optimum position on the middle (4) valve body resin molding 12, and the middle (3) valve body resin molding is arranged so as to sandwich the microwave plate-like heating element 22. The body 13 is placed. Similarly, the microwave plate-shaped heating element 23 is disposed on the middle (3) valve body resin molded body 13 at an optimum position of the middle (3) valve body resin molded body 13, and the microwave plate-shaped heating element 23. The middle (2) valve body resin molded body 14 is placed so as to sandwich it. Similarly, a microwave plate-like heating element 24 is disposed on the middle (2) valve body resin molded body 14 at an optimum position of the middle (2) valve body resin molded body 14, and the middle (1) ) Place the valve body resin molding 15.

Further, the microwave plate-like heating element 25 is arranged at an optimal position on the middle (1) valve body resin molded body 15, and the upper (U) valve body resin molded body 16 is placed thereon. During this time, components such as a check ball, a sub-strainer, and a bypass valve are arranged at predetermined positions to be sandwiched between valve body resin molded bodies 11, 12, 13, 14, 15, and 16.

Finally, the whole is temporarily fixed with bolts or the like to complete the assembly of various built-in parts. Then, a pressing force parallel to the loading direction of the valve body resin molded bodies 11, 12, 13, 14, 15, 16 is applied to the resin valve body 100 in which the assembly of the parts is completed, and at the same time, the assembly of the parts is performed. The resin valve body 100 that has been attached is irradiated with microwaves and welded.
Next, the presence of leakage in each hydraulic system is confirmed, and when there is no leakage in each hydraulic system, the next component mounting step, that is, the subsequent step is entered. In the post-process, sleeve press-fitting, collar press-fitting, insertion of a plurality of control valves, assembly of linear solenoids, etc. are performed and shipped after operation check.

[Example]
As an embodiment of the present invention, microwave plate-like heating elements 21, 22, 23, 24, and 25 are manufactured, and a resin valve body using the same and a manufacturing method thereof will be described.
A resin valve body 100 that houses a plurality of control valves that control oil pressure and oil amount for automatic transmission in an automatic transmission is divided into six along the center line of the control valve housing part. Here, the division into six along the center line of the control valve accommodating portion accommodated in the resin valve body 100 means a parting line where the resin valve body 100 can be divided, and the valve body resin molded body 11, This means that cylindrical control valves 12, 13, 14, 15 and 16 can be accommodated. The resin used here is a PPS resin.

  The metal powder has a median diameter measured by a laser diffraction / scattering method (particle diameter when the number or mass larger than a certain particle diameter represents 50% of the total powder in the particle size distribution of the powder) is 10 μm. Copper powder was employed and mixed with the PPS resin so as to be 70% by weight, and the microwave plate-like heating elements 21, 22, 23, 24, and 25 were formed into thin PPS resin sheets of 0.1 mm. Valve body resin moldings 11, 12, 13, 14, 15, and 16 made of PPS resin are resin parts that form six layers, and are laminated on one side of each layer so that a flow path or the like is formed inside. Or both sides are matched.

  The structure of the layers of these valve body resin molded bodies 11, 12, 13, 14, 15, 16 is as shown in FIG. Microwave plate heating elements 21, 22, 23, 24, between a total of five points of each layer generated when these six layers of valve body resin molded bodies 11, 12, 13, 14, 15, 16 are laminated. 25 was placed. These five microwave plate-like heating elements 21, 22, 23, 24, 25 and six layers of valve body resin moldings 11, 12, 13, 14, 15, 16 are laminated, and this laminated resin is laminated. The valve body resin molded body 11, 12, 13, 14, 15, 16 and the microwave plate-shaped heating element 21 are fixed to the valve body 100 by a ceramic jig that is not heated by microwaves and laminated. , 22, 23, 24, and 25 were pressurized at a pressure of about 0.1 to 5.0 MPa, and microwaves were irradiated in this state to perform welding.

That is, as shown in FIG. 1B, the microwave plate-like heating elements 21, 22, 23, 24, and 25 dissolve the resin by heating. Therefore, the valve body resin moldings 11, 12, 13, and Since 14, 15, and 16 sink, the dimensional accuracy can be improved by adjusting the applied load, and the occurrence of burrs due to welding can be prevented.
FIG. 2 shows an enlarged state of each layer after the welding. In FIG. 2, the valve body resin molded bodies 11 and 12 forming six layers are viewed in cross section, and a microwave plate heating element 21 is sandwiched between them.

  Here, the microwave plate-like heating elements 21, 22, 23, 24, and 25 are bonded surfaces on which the respective layers are welded so as not to protrude into the hydraulic oil flow path formed by laminating the respective layers. Must be installed accurately. As described above, when the bonding width of each layer is 3 mm, the width of the heating element is set to 1 mm, and the resin of the microwave plate-like heating elements 21, 22, 23, 24, and 25 as necessary. The microwave plate-like heating elements 21, 22, 23, 24, and 25 are formed with a shape or a through-hole according to the conditions.

  In this way, microwaves are formed between the valve body resin molded bodies 11, 12, 13, 14, 15, 16 and the valve body resin molded bodies 11, 12, 13, 14, 15, 16 constituting the welded material. The plate-shaped heating elements 21, 22, 23, 24, 25 are installed, and the valve body resin molded bodies 11, 12, 13, 14, 15 are provided via the microwave plate-shaped heating elements 21, 22, 23, 24, 25. , 16 are laminated, and microwaves are applied to the laminated microwave plate-like heating elements 21, 22, 23, 24, 25. At that time, the valve body resin moldings 11, 12, 13, 14, 15, 16 are sufficiently welded between the respective layers of the valve body resin moldings 11, 12, 13, 14, 15, 16. Each layer needs to be pressurized with a pressure of 0.1 to 5.0 MPa. When microwaves are irradiated with an output of 0.5 to 10 kW in such a pressurized state, the microwave plate-like heating elements 21, 22, 23, 24, and 25 are heated and the valve body resin moldings 11, Since the welding surface of the joining surface of 12, 13, 14, 15, 16 begins to melt, by adjusting the pressure, etc., to reduce the occurrence of burrs and improve the dimensional accuracy of the product after welding. be able to.

  Further, when the microwave plate-like heating elements 21, 22, 23, 24, 25 are heated by irradiating microwaves, the heating temperature of the microwave plate-like heating elements 21, 22, 23, 24, 25 is changed to the microwave. By controlling the irradiation energy, it is possible to control with high accuracy, stable welding is possible, and the resin valve body 100 can be more easily manufactured. And by setting the shape of the microwave plate-like heating elements 21, 22, 23, 24, 25 to an arbitrary shape, dense and uniform welding becomes possible. In particular, a part of the joint surface of the valve body resin molded body 11, 12, 13, 14, 15, 16 can be heated, and the occurrence of burrs due to the welding process can be prevented.

Furthermore, since the microwave plate-like heating elements 21, 22, 23, 24, 25 are formed in accordance with the shape of the joint surface of the valve body resin molded bodies 11, 12, 13, 14, 15, 16, The time required for setting the microwave plate-like heating elements 21, 22, 23, 24, 25 to the valve body resin molded bodies 11, 12, 13, 14, 15, 16 is very short, and the workability is good.
Moreover, in order to accommodate the microwave plate-like heating elements 21, 22, 23, 24, 25 on the joint surfaces of the valve body resin molded bodies 11, 12, 13, 14, 15, 16 as in Patent Document 1. It is not necessary to form a groove.
Even if the joint surfaces of the valve body resin molded bodies 11, 12, 13, 14, 15, 16 have a complicated shape, the microwave plate-like heating elements 21, 22, 23 having a complicated shape suitable for the shape. , 24, 25 can be obtained, so that welding can be performed to any complicated shape.

  In addition, since the microwave plate-like heating elements 21, 22, 23, 24, and 25 generate heat by containing metal powder, they can be reheated after being heated once. Further, when a plurality of layers of the welded valve body resin molded body 11, 12, 13, 14, 15, 16 are welded at a time, by adjusting the content ratio of the metal powder and the thermoplastic resin, Adjustments such as making the degree of heating of each welded portion uniform are possible.

  As described above, when the resin valve body according to the present embodiment is manufactured, the resin valve body 100 is formed in a shape divided into a plurality of valve body resin molded bodies 11, 12, 13, 14, 15, and 16 in advance. Thereafter, microwaves are applied to the microwave plate-like heating elements 21, 22, 23, 24, 25 having specific shapes along the joint surfaces of the valve body resin molded bodies 11, 12, 13, 14, 15, 16 while applying a pressing force. , The valve body resin molded bodies 11, 12, 13, 14, 15, 16 can be stably welded to each other. As described above, by using the microwave plate-shaped heating elements 21, 22, 23, 24, and 25 having arbitrary shapes, various or complicated shapes of valve body resin molded bodies 11, 12, 13, 14, 15, 16, the time required for setting the valve body resin molded bodies 11, 12, 13, 14, 15, 16 can be shortened, and productivity can be improved. In addition, by controlling the pressing force, the composition and shape (including thickness) of the microwave plate-like heating elements 21, 22, 23, 24, and 25, the microwave irradiation conditions, etc., the occurrence of burrs is suppressed at the bonded portion. Thus, since the desired bonding strength can be obtained, the subsequent deburring process can be reduced. In addition, unlike the conventional Patent Document 1, the semicircular grooves required when using the string-like heating element are not required, and the microwave plate-like heating elements 21, 22, 23, 24, 25 are used. Can be heated multiple times. Moreover, it is possible to obtain arbitrary heat generation efficiency.

  The resin valve body 100 according to the above embodiment has been described as a resin valve body 100 for an auto-match transmission, but for an automobile, a valve body for CVT, HV, etc., or welding is repeated a plurality of times. Intake manifolds, reservoir tanks, etc. that have been commercialized can also be used. Further, the present invention is not limited to automobiles, and can be applied to those formed by fixing multi-layer resin parts such as a resin valve body for a device requiring hydraulic control, a separator of a fuel cell, and the like. Of course, it is not limited to these, It can also be used for manufacture of the member etc. which integrated the member which consists of two or more thermoplastic resins.

A Linear solenoid valve A1 Electromagnetic control part A2 Valve parts 11, 12, 13, 14, 15, 16 Valve body resin molded body 20, 21, 22, 23, 24, 25 Microwave plate heating element 100 Resin valve body

Claims (8)

A resin valve body that accommodates a plurality of control valves that control oil pressure and oil amount for automatic transmission in an automatic transmission is disposed along the center line of the oil passage in the plurality of control valve accommodation portions or the resin valve body. A plurality of valve body resin moldings divided into three or more ,
A thermoplastic resin film or a thermoplastic resin film having a metal thin film kneaded with metal powder, which is a conductor that can be dielectrically heated by microwaves, sandwiched between the valve body resin molded bodies , or a micro formed from a metal foil And a welded layer welded by irradiating the microwave while applying a pressing force in a joining direction for joining the valve body resin molded bodies to the corrugated plate-like heating element. Valve body. 2. The resin valve body according to claim 1, wherein the microwave plate-like heating element is formed in a shape along a joint surface of the plurality of valve body resin molded bodies. 3. The resin valve body according to claim 1, wherein the microwave plate-like heating element is chamfered at all angles. The resin valve body according to any one of claims 1 to 3 , wherein the microwave plate-like heating element has a through hole for positioning. Three or more resin valve bodies that contain a plurality of control valves that control oil pressure and oil amount for automatic transmission in an automatic transmission are placed on the center line of the oil passages in the plurality of control valve housing parts or the resin valve bodies. For multiple valve body resin moldings formed by dividing along
Microwave plate formed from a thermoplastic resin film or a thermoplastic resin film having a metal thin film obtained by kneading a metal powder that is a conductor that can be dielectrically heated by microwaves between the plurality of valve body resin molded bodies , or a metal foil A resinous product characterized in that a heat generating member is sandwiched between the plurality of valve body resin molded bodies and welded to each other by irradiating the microwave while applying a pressing force in the joining direction. Manufacturing method of valve body. 6. The method for manufacturing a resin valve body according to claim 5, wherein the microwave plate-like heating element is formed in a shape along a joint surface of the plurality of valve body resin molded bodies. The method for producing a resin valve body according to claim 5 or 6, wherein the microwave plate-like heating element is chamfered at all angles. The method for manufacturing a resin valve body according to any one of claims 5 to 7, wherein the microwave plate-like heating element has a through hole for positioning.

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