JP2011161800A - Method for manufacturing assembled synthetic resin product and semifinished assembled synthetic resin product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure precise movement of a moving part by molding a moving member and a fixed member supporting the moving member in a preliminarily assembled state, to adapt to mass production, and to enhance usability by imparting the moving member with a character in the moving mode so as to increase the commercial value. <P>SOLUTION: In the method for manufacturing a product assembling a moving support part 12 of the moving member 1 and a move-receiving part 22 of the fixed member 2 supporting the moving member 1 by molding a synthetic resin material, concave-convex structures 13b and 23b engageable and releaseable with each other are provided between the moving support part 12 side of the moving member 1 and the move-receiving part 22 side of the fixed member 2. Upon keeping away from movable surfaces 13a and 23a of the moving support part 12 of the moving member 1 and the move-receiving part 22 of the fixed member 2, integral molding is carried out inside the mold 4 with a site where the moving member 1 and the fixed member 2 are mutually approaching as the joining part, and the joined part 3 of the moving member 1 and the fixed member 2 is broken when the mold 4 is released. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for manufacturing an assembled synthetic resin product in which a product in which a movable member and a fixed member that supports the movable member are assembled is integrally formed with a synthetic resin material, and an assembled synthetic resin product that is a finished product. It belongs to the technical field related to synthetic resin semi-finished products in the previous stage product.

  In general, in manufacturing an assembly product, a movable member and a fixed member are separately molded and then assembled. However, since a mold for molding the movable member and a mold for molding the fixed member are required, there is a problem that the manufacturing cost increases. In addition, when the assembled product has a micro structure, there is a problem that the assembly becomes difficult.

  In order to eliminate the difficulty in manufacturing after assembly, cavities for molding the movable member and the fixed member are partitioned in one mold so as to be in an assembled state, and a separate gate is connected to each cavity. A technique has been developed in which the movable member and the fixed member are integrally formed in a state where they are assembled in advance. However, since a separate gate is communicated with each cavity, there is a new problem that the mold becomes large and complicated.

  For this reason, development of the technique which shape | molds a movable member and a fixed member in the state assembled | attached previously is requested | required, without enlarging a metal mold | die and complexity.

  Conventionally, for example, a technique described in Patent Document 1 is known as a technique for integrally forming a movable member and a fixed member in a state where the movable member and the fixed member are assembled in advance without increasing the size and complexity of the mold.

  In Patent Document 1, a receiving portion and a shaft portion rotatably supported by the receiving portion are integrally formed, and the shaft portion is inserted into a through hole of the receiving portion, and the inner periphery of the through hole is A structure is shown that supports at four points protruding so as to face each other on a movable surface from the surface toward the shaft portion. The support portion has a shape in which a substantially conical body is cut in half from the apex, and the standing surface of each support portion is formed on the same plane as the inner surface of the bearing portion. Since the connecting portion between the support portion and the shaft portion is a thin-walled portion, the thin-walled portion is formed to break by twisting either the bearing portion side or the shaft portion side or both (paragraph 0021, 0022).

  The manufacturing method of the assembled product according to Patent Document 1 is not a troublesome assembling work after molding by integrating the shaft part and the receiving part so that the mold is not enlarged and complicated at the time of molding. By breaking the support part that connects the shaft part and the receiving part, the shaft part and the receiving part are separated (the shaft part is in an assembled state in which the shaft part can be rotated instead of being detached), thereby attempting to overcome the above-mentioned difficulties. Is.

Utility Model Registration No. 2582128

  In the method for manufacturing an assembled product according to Patent Document 1, since a part of the rotating surface, which is a movable surface between the shaft portion and the receiving portion, is connected, a cut mark generated in the broken support portion becomes an obstacle. There is a big problem that precise rotation of the shaft part becomes impossible. In particular, since a rotational torque due to twisting acts on the thin wall portion in the support portion, cutting traces are arbitrarily generated on the shaft portion side or the receiving portion side.

  In addition, after removing the assembled semi-finished product from the mold, the operation of twisting the connecting part of the shaft part and the receiving part will be performed. However, depending on the skill of the operator, the twisting force and the twisting method, the above-mentioned cutting is performed. Since the location and size of the marks are different, it is recognized that the practicality of the movable surface is lacking.

  Further, since the shaft portion and the receiving portion have a simple rotation support structure and there is no feature in the movable form of the shaft portion, there is a problem that the usefulness of the assembled semi-finished product is low and the commercial value remains low.

  The present invention has been made in consideration of such problems, and is formed with a movable member and a fixed member assembled in advance, so that the movable portion can be precisely moved and adapted to mass production. In addition, the manufacturing method of an assembled synthetic resin product that is characterized by the movable form of the movable member to increase its usefulness and increase the value of the product, and assembled in the previous stage product of the assembled synthetic resin product that is the finished product An object is to provide a synthetic resin semi-finished product.

  In order to solve the above-mentioned problems, in the present invention, in a manufacturing method in which a product in which a movable support portion of a movable member and a movable receiving portion of a fixed member that supports the movable member are assembled is formed of a synthetic resin material, the movable support of the movable member The movable member is provided with a concavo-convex structure that can be engaged and disengaged between the portion side and the movable receiving portion side of the fixed member, and avoiding the movable surface of the movable support portion of the movable member and the movable receiving portion of the fixed member. And a portion where the fixed member and the fixed member are close to each other are integrally formed inside the mold as a connecting portion, and a means for breaking the connecting portion between the movable member and the fixed member when the mold is released is adopted.

  In this means, a concavo-convex structure that can be engaged and disengaged is provided between the movable support portion side of the movable member and the movable receiving portion side of the fixed member, thereby restricting the movement of the movable member by disengagement of the concavo-convex structure. can do. Further, since the broken connection portion between the movable support portion of the movable member and the movable receiving portion of the fixed member avoids the movable surface, the broken connection portion does not become an obstacle to the movement of the movable member. Moreover, since the connection part is in the approach part of the movable member and the fixed member, the assembling shape is ensured and the cutting is facilitated. Further, when the movable member and the fixed member are disconnected from each other when the movable member and the fixed member are removed from the mold, the movable member and the fixed member are separated. A process becomes unnecessary.

  According to the present invention, in the manufacturing method of molding a product that combines the movable support portion of the movable member and the movable receiving portion of the fixed member that supports the movable member with a synthetic resin material, the movable support portion side of the movable member and the fixed member The movable receiving portion side is assembled so that the space between the movable receiving portion and the movable receiving portion is changed, and the movable support portion of the movable member and the movable receiving portion of the fixed member are avoided, and the movable member and the fixed member are avoided. And a portion that approaches each other is integrally formed inside the mold as a connection portion, and means for breaking the connection portion between the movable member and the fixed member when the mold is released.

  In this means, the movable support portion side of the movable member and the movable receiving portion side of the fixed member are assembled so that the space between the two is changed by the movement. Is variable. Further, since the broken connection portion between the movable support portion of the movable member and the movable receiving portion of the fixed member avoids the movable surface, the broken connection portion does not become an obstacle to the movement of the movable member. Moreover, since the connection part is in the approach part of the movable member and the fixed member, the assembling shape is ensured and the cutting is facilitated. Further, when the movable member and the fixed member are disconnected from each other when the movable member and the fixed member are removed from the mold, the movable member and the fixed member are separated. A process becomes unnecessary.

  Further, the present invention employs means for pressing the movable member or the fixed member with a part of the mold when the mold is released to break the connection portion between the movable member and the fixed member.

  In this means, the connecting portion of the movable member and the fixed member is broken by pressing a part of the mold.

  Further, the present invention employs means for arranging the ejector pin provided in the mold and protruding the molded product so that the protruding stress concentrates on the connecting portion between the movable member and the fixed member and breaks.

  In this means, the connecting portion of the movable member and the fixed member is broken by the protruding stress of the ejector pin.

  Further, the present invention employs a means for adjusting the projecting timing so that the ejector pin provided in the mold and projecting the molded product projects and breaks due to the concentrated stress at the connecting portion between the movable member and the fixed member.

  In this means, the connecting portion of the movable member and the fixed member is broken by adjusting the timing of ejector pin projection.

  Further, the present invention employs means characterized in that the connecting portion between the movable member and the fixed member of the mold is formed into a conical slit and is broken by the mold release stress.

  In this means, the connecting portion of the movable member and the fixed member is broken by the stress of the normal mold opening operation of the mold. Of course, it can be broken by the means of claims 2 to 4.

  Next, in the present invention, in the synthetic resin semi-finished product in which the movable support portion of the movable member and the movable receiving portion of the fixed member that supports the movable member are assembled, the movable support portion side of the movable member and the movable receiving portion side of the fixed member An uneven structure that can be engaged and disengaged is provided between the movable member and the movable member and the movable member. Is used as a connecting portion, and is integrally molded inside the mold, and a means for releasing the mold from the mold without breaking the connecting portion between the movable member and the fixed member when the mold is released is adopted.

  In this means, the movable surfaces of the movable support portion side of the movable member and the movable receiving portion side of the fixed member are formed so as to be movable, while the connection portion is connected to other parts of the movable member and the fixed member. It is handled as an integrated semi-finished product, and is carried out avoiding a movable surface when breaking. In addition, since the connecting part is in the approaching part of the movable member and the fixed member, the assembling and retaining shape is ensured and the cutting is facilitated. Furthermore, the movement of the movable member is restricted by the engagement / disengagement of the concavo-convex structure.

  Further, in the present invention, in the synthetic resin semi-finished product in which the movable support part of the movable member and the movable receiver part of the fixed member that supports the movable member are assembled, the movable support part side of the movable member and the movable receiver part side of the fixed member are It is assembled so that the space between the two changes due to the movement, and the movable member and the fixed member approach each other while avoiding the movable surfaces of the movable support portion of the movable member and the movable receiving portion of the fixed member. The part to be formed is integrally formed inside the mold with the part to be connected as a connecting part, and the mold is released from the mold without breaking the connecting part between the movable member and the fixed member when releasing the mold.

  In this means, the movable surfaces of the movable support portion of the movable member and the movable receiving portion of the fixed member are formed so as to be movable, while the connection portion is connected to other parts of the movable member and the fixed member. It is handled as a semi-finished product, and it is carried out avoiding a movable surface when breaking. In addition, since the connecting part is in the approaching part of the movable member and the fixed member, in addition to the fact that the shape retention is ensured, the cutting is facilitated. Further, the space between the two can be varied by the movement of the movable member.

  In the method of manufacturing an assembled synthetic resin product according to the present invention, a concavo-convex structure is provided between the movable support portion side of the movable member and the movable receiving portion side of the fixed member so that the concavo-convex structure is provided. By engaging and disengaging, the movement of the movable member can be regulated, and the movable support part side of the movable member and the movable receiving part side of the fixed member are assembled so that the space between the two is changed by movement. In addition, since the space between the two can be changed by the movement of the movable member, the movable form of the movable member can be characterized to increase the usefulness and the commercial value. Further, since the movable surfaces of the movable support portion of the movable member and the movable receiving portion of the fixed member are avoided, the broken connection portion does not become an obstacle to the movement of the movable member. Can be molded in a pre-assembled state to ensure accurate movement of the movable member. Furthermore, after removing the assembled synthetic resin semi-finished product from the mold, the operation of twisting the movable support part of the movable member and the movable receiving part of the fixed member from the movable surface was performed. Can be wiped out.

  The assembled synthetic resin semi-finished product according to the present invention is an integrated semi-finished product in which the movable support portion of the movable member and the movable receiving portion of the fixed member are formed so as to be movable, and at the same time, other parts are connected. Since the movable surface is avoided when assembling to another part or the like, it is wiped out that the broken connection portion becomes an obstacle to the movement of the movable surface. In addition, since the connecting part is in the approaching part of the movable member and the fixed member, the assembling shape can be surely performed, while the cutting can be easily performed. Furthermore, the movement of the movable member is restricted by the engagement / disengagement of the concavo-convex structure, and the space between the two is variable by the movement of the movable member. Can be increased.

It is a disassembled perspective view containing the apparatus structure of the 1st example of the form for implementing the manufacturing method and assembly | attachment synthetic resin semi-finished product of the assembly synthetic resin product which concern on this invention. It is the perspective view which the assembly | attachment synthetic resin product which is a molded article of FIG. 1 decomposed | disassembled. It is an expanded sectional view of the principal part of FIG. It is a longitudinal cross-sectional view of the assembly state of FIG. It is a cross-sectional view of the assembled state of FIG. It is a fracture | rupture operation | movement figure of the connection part of the movable member in FIG. 4, and a fixed member. It is an expanded sectional view of the principal part of the assembly | attachment synthetic resin product which is a molded article of FIG. It is sectional drawing containing the apparatus structure of the 2nd example of the form for implementing the manufacturing method and assembly | attachment synthetic resin semi-finished product of the assembly synthetic resin product which concern on this invention. It is a fracture | rupture operation | movement figure of the connection part of the movable member in FIG. 8, and a fixed member. It is sectional drawing containing the apparatus structure of the 3rd example of the form for enforcing the manufacturing method and assembly synthetic resin semi-finished product of the assembly synthetic resin product which concern on this invention. It is a fracture | rupture operation | movement figure of the connection part of the movable member in FIG. 10, and a fixed member. It is sectional drawing containing the apparatus structure of the 4th example of the form for enforcing the manufacturing method and assembly synthetic resin semi-finished product of the assembly synthetic resin product which concern on this invention. It is sectional drawing of the molded product of the 5th example of the form for implementing the manufacturing method of the assembly synthetic resin products which concern on this invention, and an assembly synthetic resin semi-finished product. It is a top view of the molded product of the 5th example of the form for implementing the manufacturing method of the assembly synthetic resin products which concern on this invention, and an assembly synthetic resin semi-finished product. FIG. 14 shows an example of use of the molded product of FIG. 13 as a fixture, wherein (A) shows a state before fixation, and (B) shows a state after fixation. It is sectional drawing of the molded product of the 6th example of the form for implementing the manufacturing method of the assembly synthetic resin products which concern on this invention, and an assembly synthetic resin semi-finished product.

  Hereinafter, the manufacturing method of the assembly synthetic resin product concerning this invention and the form for implementing an assembly synthetic resin semi-finished product are demonstrated based on drawing.

  FIGS. 1-7 shows the 1st example of the form for implementing the manufacturing method of the assembly synthetic resin product which concerns on this invention.

  In the first example, an assembly synthetic resin product P in which the movable support portion 12 of the movable member 1 and the movable receiving portion 22 of the fixed member 2 are movable is shown.

  The movable member 1 includes a movable support portion 12 at a part of the base portion 11 of the rectangular block body, and a shaft support portion is formed as the movable support portion 12 by projecting the opposing surface to the bowl-shaped block body. A shaft 13 having a shape is protruded. The side of the movable support portion (shaft support portion) 12 that faces the fixed member 2 is formed as a large-diameter semicircular portion 12 a along the shaft portion 13. On the outer peripheral surface 13a that is the movable surface of the shaft portion 13, uneven portions (uneven structure) 13b that protrude outward in the radial direction and extend in the axial direction are provided radially with respect to the center of the shaft.

  The fixed member 2 is provided with a movable receiving portion 22 so as to protrude from both sides of the base portion 21 of the rectangular block body, and the movable receiving portion 22 is formed with a substantially vertical or loose concave receiving surface 22a. The movable support (shaft support) 12 is opposed to the semicircular portion 12a. The movable receiving portion 22 is formed in a pair of arm portions as a movable receiving portion of a bowl-shaped plate body, and a circular bearing hole 23 is drilled in the movable receiving portion (arm portion) 22. The movable receiving portion (arm portion) 22 is provided with a planar inner surface portion 22b on the inner side. On the inner peripheral surface 23a that is a movable surface of the bearing hole 23, uneven portions (uneven structure) 23b protruding outward in the radial direction and extending in the axial direction are provided radially with respect to the axial center.

  The connecting portion 3 at the time of molding the movable member 1 and the fixed member 2 is provided between the movable support portion (shaft support portion) 12 of the movable member 1 and the movable receiving portion (arm portion) 22 of the fixed member 2. Yes. As shown in the figure, the connecting portion 3 is a receiving surface of the movable receiving portion (arm portion) 22 of the fixed member 2 that is spaced apart from the top of the semicircular portion 12a of the movable supporting portion (shaft supporting portion) 12 in a substantially parallel state. 22a is provided in a communication state. In other words, the connecting portion 3 is not provided between the movable support portion 12 and the movable receiving portion 22, and the top of the semicircular portion 12a where the movable support portion 12 and the movable receiving portion 22 approach each other. It arrange | positions in the site | part with the receiving surface 22a corresponding to this. As a result, the connecting portion 3 is short, but is configured to easily generate rotational torque due to the semicircular portion 12a. Although one connecting portion 3 is shown in the drawing, it is not disturbed that a plurality of connecting portions 3 are arranged within a range that can be easily cut in consideration of fluidity due to a resin material or a mold structure.

  A plurality of concave and convex portions (concave and convex structures) 13b on the outer peripheral surface 13a of the shaft portion 13 and a concave and convex portion (concave and convex structure) 23b on the inner peripheral surface 23a of the bearing hole 23 are provided in the circumferential direction. As shown in FIG. 3, the depths (a, b) are provided so as to overlap each other.

  In the first example, an assembly synthetic resin product P is molded from a synthetic resin material using a multi-part structure mold 4.

  The mold 4 includes one upper mold 41, two lower molds 42 and 43, and two side molds 44 and 45 which are split molds. The upper mold 41 of the mold 4 includes a cavity 41a that molds most of the upper half of the movable member 1 and fixed member 2 of the assembled synthetic resin product P, and a movable member 1 and fixed member of the assembled synthetic resin product P. A slit 41b that molds the upper half of the second connection portion 3 and a slide hole 41c that allows the upper half of the side molds 44 and 45 to slide are provided.

  The lower molds 42 and 43 of the mold 4 are the movable members 1 of the assembled synthetic resin product P, cavities 42a and 43a for molding most of the lower half of the fixed member 2, and the movable members of the assembled synthetic resin product P. 1, a slit 43b (only the right lower mold 43) for forming the lower half of the connecting portion 3 of the fixing member 2, and slide holes 42b and 43c that allow the lower half of the side molds 44 and 45 to slide. Is provided. Both lower molds 42 and 43 are divided into two at the center of the slide holes 42b and 43c. The lower mold 43 on the right side can be tilted (rotated) at the upper part of the dividing surface with respect to the lower mold 42 on the left side.

  The side molds 44 and 45 of the mold 4 include an outer peripheral surface (movable surface) 13a of the shaft portion 13 of the movable member 1 of the assembled synthetic resin product P and an inner peripheral surface (movable surface) 23a of the bearing hole 23 of the fixed member 2. It is formed in the cylindrical shape which shape | molds, and is arrange | positioned so that contact / separation is possible from an orthogonal direction. And the recessed part 44a, 45a, 44b, 45b is provided so that depth (a, b) may mutually overlap in the internal peripheral surface of the cylindrical side type | molds 44 and 45 of the metal mold | die 45, and an outer peripheral surface (refer FIG. 3). The aforementioned uneven portions 13b and 23b can be formed on the movable surface (the outer peripheral surface of the shaft portion 13) 13a of the movable member 1 and the movable surface (the inner peripheral surface of the bearing hole 23) 23a of the fixed member 2. (See FIG. 7).

  As shown in FIGS. 4 and 5, the mold 4 in the mold closed state is filled with a synthetic resin material melted from a single gate by injection or the like. As a result, the movable member 1 and the fixed member 2 are integrated and molded through the connection portion 3 inside the mold 3.

  As a result, it is not necessary to provide a plurality of gates, and the mold 4 can be prevented from becoming large and complicated.

Thereafter, as shown in FIG. 6, after opening the upper mold 41, the lower mold 43 on the right side is slightly moved (turned) upward.
As a result, the base portion 21 of the fixed member 2 is pushed and the stress is concentrated on the connection portion 3 at the top of the semicircular portion 12a of the movable support portion (shaft support portion) 12 of the movable member 1 through the receiving surface 22a. Before rotation of the shaft portion 13 and the bearing hole 23 is promoted and a large rotational torque is generated at the top of the semicircular portion 12a having a diameter larger than that of the rotation portion, before the connection portion 3 is taken out from the mold 4. It breaks easily and reliably.

  Accordingly, when the assembled synthetic resin product P, which is a molded product, is taken out from the inside of the mold 4, it is positioned on the semicircular portion 12 a of the shaft support portion 12 of the movable member 1 and the receiving surface 22 a of the base portion 21 of the fixed member 2. The connecting portion 3 to be cut is broken, and the movable member 1 and the fixed member 2 are separated.

As a result, after the assembly synthetic resin product P, which is a molded product, is taken out from the mold 4, there is no need to break the connecting portion 3 of the movable member 1 and the fixed member 2 to separate the movable member 1 and the fixed member 2. In addition, since no cut marks are generated on the movable surfaces 13a and 23a between the shaft portion 13 of the shaft support portion 12 of the movable member 1 and the bearing hole 23 of the arm portion 22 of the fixed member 2, the mass production is also possible. To adapt.
In other words, since the connecting portion 3 does not exist on the movable surface 13a of the movable member 1 (the outer peripheral surface of the shaft 13) and the movable surface 23a of the fixed member 2 (the inner peripheral surface of the bearing hole 23), the connecting portion 3 is movable. There will be no obstacles. As a result, precise movement of the movable member 1 in the assembled synthetic resin product P is ensured.

  The assembled synthetic resin product P taken out from the mold 4 has an uneven structure on the movable surface (the outer peripheral surface of the shaft 13) 13a of the movable member 1 and the movable surface (the inner peripheral surface of the bearing hole 23) 23a of the fixed member 2. (Uneven portions 13b and 23b) are formed, so that the movable member 1 can be stopped from moving at a certain angle, the angle can be adjusted stepwise by applying force to the movable member 1, and the angle can be adjusted. In this case, a click feeling can be generated (see FIG. 7)). Therefore, since the movable form of the movable member 1 is characterized, the usefulness of the assembled synthetic resin product P is enhanced and the commercial value is increased.

  8 and 9 show a second example of an embodiment for carrying out the method for producing an assembled synthetic resin product according to the present invention.

  In the second example, the left and right lower molds 42 and 43 of the mold 4 of the first example are integrated, and an ejector pin 5 that projects a molded product from the mold 4 is projected to the connecting portion 3 of the movable member 1 and the fixed member 2. The ejector pins 5 are arranged so that the stress is concentrated and breaks. That is, the connecting portion 3 at the top of the semicircular portion 12a of the shaft support portion 12 of the movable member 1 is arranged, and a movable surface is provided rotatably at the shaft portion 13 and the bearing hole 23. A large rotational torque is generated at the top of the large-diameter semicircular portion 12a.

  In the second example, when the assembled synthetic resin product P, which is a molded product, is taken out from the mold 4, the connecting portion 3 between the semicircular portion 12 a of the movable member 1 and the receiving surface 22 a of the fixed member 2 is broken and moved. The member 1 and the fixing member 2 are separated.

According to the second example, there is an advantage that the structure of the mold 4 can be simplified as compared with the first example.
Moreover, about the 2nd example, the same effect | action and effect can be show | played by adjusting the protrusion timing of each ejector pin 5 about the ejector pin 5 of general arrangement | positioning.

  10 and 11 show a third example of an embodiment for carrying out the method for producing an assembled synthetic resin product according to the present invention.

  In the third example, the left and right lower molds 42 and 43 of the mold 4 of the first example are integrated to form the slit 41b of the upper mold 41 and the slit 43b of the lower mold 43 on the right side in a conical shape like a submarine gate. It is. The slits 41 b and 43 b are desirably disposed on the top of the semicircular portion 12 a of the shaft support portion 12 of the movable member 1 and the receiving surface 22 a of the movable receiving portion 22 of the fixed member 2.

  According to the third example, the connecting part 3 of the movable member 1 and the fixed member 2 is easily broken by the stress of the normal mold opening operation of the mold 4, so that a special operation is required for the mold 4 and the ejector pin 5. Therefore, there is an advantage that the molding speed of the assembled synthetic resin product P can be increased.

  FIG. 12 shows a fourth example of an embodiment for carrying out the method for producing an assembled synthetic resin product according to the present invention.

  In the fourth example, the connecting portion 3 is provided between both end surfaces 12 a of the shaft support portion 12 positioned at the base end of the shaft portion 13 of the movable member 1 and the inner surface portion 22 b of the arm portion 22 of the fixed member 2.

  According to the fourth example, the position of the connecting portion 3 of the illustrated movable member 1 and fixed member 2 does not affect the outer peripheral surface 13a of the shaft portion 13 and the peripheral surface 23a of the bearing hole 23. The effect is reliably achieved.

  As described above, the connecting portion 3 of the movable member 1 and the fixed member 2 can be broken by vibrating a part of the mold 4 in addition to the illustrated form.

  FIGS. 13, 14 and 15 show a fifth example of the embodiment for carrying out the method for producing an assembled synthetic resin product according to the present invention.

  In the fifth example, the shaft support portion 12 of the bowl-shaped block body in which the movable member 1 is bent 90 degrees at a part of the base portion 11 of the rectangular block body with a substantially P-shaped cross section. A pair of movable receiving portions of a plate body provided with cylindrical shaft portions 13 on both end faces 12a of the base plate, and the fixing member 2 projecting from both side ends of the base portion 21 of the plate block body so as to be U-shaped. A circular bearing hole 23 is drilled in the (arm portion) 22. The center C of the shaft support portion 12 of the movable member 1 is decentered by α from the center D of the shaft portion 13.

  According to the fifth example, as shown in FIG. 15A, the sheet-like shape is formed between the shaft support portion 12 of the movable portion 1 and the base portion 21 of the fixed member 2 in a state where the movable member 1 is raised from the fixed member 2. As shown in FIG. 15B, the member S is inserted and the movable member 1 is rotated (tilted) so that the sheet-like member S is fixed to the semicircular portion 12c of the shaft support portion 12 of the movable member 1 and the fixed member. It can be displaced by α and fixed between the two base portions 21. That is, it can be used as a fixture. Therefore, since the movable member 1 has a feature of turning as a movable form, the usefulness of the assembled synthetic resin product P is enhanced and the commercial value is enhanced.

  FIG. 16 shows a sixth example of an embodiment for carrying out the method for producing an assembled synthetic resin product according to the present invention.

  As in the fifth example, the sixth example supports the shaft with respect to the center of the shaft portion 13 of the movable member 1 without forming a precise eccentric structure in the shaft support portion 12 and the shaft portion 13 of the movable member 1. It can also be realized by forming a simple concavo-convex structure 13c in which a concave portion enabling insertion of the sheet-like member S and a convex portion enabling pressure-contact of the sheet-like member S are formed on the peripheral surface of the portion 12. That is, by rotating the movable member 1, the sheet-like member S can be pressed and fixed by the uneven portion 13c.

In each example of the form for carrying out the method for manufacturing an assembled synthetic resin product according to the present invention described above, it has been described on the premise that the connecting portion 3 is cut in the mold 4, but the product is not limited to this. It is not intended to be limited.
That is, as shown in each example, a portion where the movable member 1 and the fixed member 2 approach each other is avoided while avoiding the movable support portion 12 of the movable member 1 and the movable surface of the movable receiving portion 22 of the fixed member 2. Synthetic resin which is integrally molded inside the mold 4 as the connection part 3 and is released from the mold 4 without breaking the connection part 3 between the movable part 1 and the fixed part 2 when the mold 4 is released. It does not prevent the provision of semi-finished products as products.

  As a result, the integrated semi-finished product can be easily managed and stored and transported, and even if the movable member 1 and the fixed member 2 are broken by a work operation as required, the shaft portion 13 and the bearing hole 23 are removed. Can be used as those that are not affected by fracture marks.

  As described above, the present invention can be applied to the case where the movable surfaces 13a and 23a of the movable member 1 and the fixed member 2 constitute a slide structure in addition to the illustrated embodiment.

DESCRIPTION OF SYMBOLS 1 Movable member 2 Fixed member 3 Connection part 4 Mold 5 Ejector pin 11 Base (movable part)
12 Movable support (shaft support)
12a, 12c Semicircular portion 12b Both end surfaces 13 Shaft portion 13a Movable surface (outer peripheral surface)
13b, 13c Uneven part 21 Base (fixed part)
22 Movable receiving part (arm part)
22a receiving surface 22b inner surface portion 23 bearing hole 23a movable surface (inner peripheral surface)
41 Upper mold 41b, 43b Slit 42a, 43a Cavity 42b, 43c Slide hole P Assembly plastic product

Claims (8)

In the manufacturing method of molding a product that combines the movable support portion of the movable member and the movable receiving portion of the fixed member that supports the movable member with a synthetic resin material,
An uneven structure that can be engaged and disengaged is provided between the movable support portion side of the movable member and the movable receiving portion side of the fixed member, and the movable surface of the movable support portion of the movable member and the movable receiving portion of the fixed member is avoided. In addition, the part where the movable member and the fixed member approach each other is integrally formed inside the mold as a connection part, and the connection part between the movable member and the fixed member is broken when the mold is released. A method for producing a characteristic synthetic resin product. In the manufacturing method of molding a product that combines the movable support portion of the movable member and the movable receiving portion of the fixed member that supports the movable member with a synthetic resin material,
The movable support portion side of the movable member and the movable receiving portion side of the fixed member are assembled so that the space between the movable member and the movable receiving portion side of the fixed member changes. The part where the movable member and the fixed member come close to each other is integrally formed inside the mold as the connection part, and the connection part between the movable member and the fixed member is broken when the mold is released A method for producing an assembled synthetic resin product, comprising:   3. The method of manufacturing an assembled synthetic resin product according to claim 1 or 2, wherein when the mold is released, the movable member or the fixed member is pressed by a part of the mold to thereby connect the movable member and the fixed member. A method for producing an assembled synthetic resin product, characterized by breaking.   3. The method of manufacturing an assembled synthetic resin product according to claim 1, wherein the ejector pin provided in the mold and projecting the molded product breaks due to concentration of the projecting stress at the connecting portion between the movable member and the fixed member. A method for producing an assembled synthetic resin product, wherein   3. The method of manufacturing an assembled synthetic resin product according to claim 1, wherein the ejector pin provided in the mold and projecting the molded product breaks due to concentration of the projecting stress at the connecting portion between the movable member and the fixed member. A method for producing an assembled synthetic resin product, characterized by adjusting the timing of the projection.   3. The method of manufacturing an assembled synthetic resin product according to claim 1, wherein a connecting portion between the movable member and the fixed member of the mold is formed as a conical slit so as to be broken by a mold release stress. A method for producing an assembled synthetic resin product characterized by In an assembled synthetic resin semi-finished product that assembles the movable support portion of the movable member and the movable receiving portion of the fixed member that supports the movable member,
An uneven structure is provided between the movable support portion side of the movable member and the movable receiving portion side of the fixed member so that engagement and disengagement are possible, and a movable surface between the movable support portion of the movable member and the movable receiving portion of the fixed member is provided. The parts where the movable member and the fixed member come close to each other are integrally formed inside the mold as a connecting part, and the connecting part between the movable member and the fixed member is broken when the mold is released. Semi-finished synthetic resin product, which is characterized by being released from the mold. In an assembled synthetic resin semi-finished product that assembles the movable support portion of the movable member and the movable receiving portion of the fixed member that supports the movable member,
The movable support portion side of the movable member and the movable receiving portion of the fixed member are assembled so that the space between the movable member and the movable support portion of the fixed member is changed. In addition, the movable member and the fixed member are integrally formed inside the mold as a connecting portion where the movable member and the fixed member approach each other, and when the mold is released, the connecting portion between the movable member and the fixed member is Semi-assembled synthetic resin product that is released from the mold without breaking.

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