JP2008030352A - Assembly of resin molding and column, and manufacturing method and apparatus for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an assembly which can cope with requirements for reduction of the thickness of resin molded plates, realize firm joining, improve assembling precision, e.g. the degree of verticality, allow relatively free selection of the shape of assembly members and assembling in a short time at low costs and serve as a fixing method for precision parts. <P>SOLUTION: A through or bottomed attachment hole for insertion and assembling of a column is formed in the resin molding. A peripheral channel of a specified depth is formed at the assembling position of the outer peripheral surface of the column to be inserted into the attachment hole. The column is inserted into the attachment hole of the resin molding ande set at the assembling position where the inner peripheral surface of the attachment hole and the peripheral channel face each other. A compression force is applied to the periphery of the attachment hole of the resin molding in the radial direction, and ultrasonic vibration is applied to the periphery of the attachment hole from the compressed surface so that the material of the periphery of the attachment hole molten by the heat of the ultrasonic vibration is forced to flow into the peripheral channel of the column under the compression force, and the column is fixed in the attachment hole of the resin molding. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a technique for assembling a resin molded body made of a thermoplastic resin and a hollow or solid columnar body made of a material having a melting point higher than that of the thermoplastic resin.

  Conventionally, as a method for fixing a shaft made of a metal or the like to a plate made of a thermoplastic resin molded body, for example, press-fitting or adhesion with a solvent has been mainly performed. However, press fitting cannot secure sufficient strength when the resin molding plate is thinned, and the adhesion method using a solvent is basically difficult to achieve verticality, the shape is not free, it takes time to join, and the production efficiency is high. It has been difficult to introduce as a fixing method for precision parts.

  On the other hand, as a method for melting and press-fitting a resin molded body with ultrasonic waves, a second member having a high melting point is disposed on the first member of the thermoplastic resin, and the flat surface formed on the second member is used for processing. The processing surface of the horn is brought into contact with each other, ultrasonic vibration is applied to the processing horn, and a pressing force is applied between the receiving jig and the processing surface of the processing horn so that the heat is melted by the ultrasonic vibration heat. In the apparatus for connecting and fixing a part of the second member by press-fitting into one member, a recess is formed in at least a part of the processing horn, and at least a part of the end of the flat surface of the second member is The second member is arranged so that the first member, which is located below the concave portion and melts when the second member is press-fitted, wraps around the flat surface side of the second member and covers at least a part of the end portion of the flat surface. Proposed devices (eg, special Reference 1.).

However, since such a method presses the second member against the first member, a decrease in the perpendicularity of the second member is inevitable. In addition, it is fixed by the resin that wraps around to the flat surface side of the second member, and since it has a structure that requires a sufficient amount of wrapping, it is certain if the molten resin is clogged in the recess of the processing horn. Management is troublesome because the connection cannot be maintained. Further, the flat surface of the second member is essential, and cannot be applied to a shaft body without such a flat surface. Furthermore, the first member needs to be thick enough to embed the flat surface of the second member, and cannot be applied to thin plate. In addition, there is a problem that a processing horn having a special shape is required for each type of the second member, which increases costs.
JP 59-145112 A

  Therefore, in view of the above-mentioned situation, the present invention can sufficiently solve the thinning of the resin molded plate, can realize strong bonding, and can improve the assembly accuracy such as the verticality, Provided is an assembled product that can be applied to the shape of the assembled member relatively freely, can be assembled at a low cost and in a short time, and can be used as a fixing method for precision parts, a manufacturing method thereof, and a manufacturing apparatus. There is in point to do.

  In order to solve the aforementioned problems, the present invention provides a method for producing an assembly of a resin molded body made of a thermoplastic resin and a hollow or solid columnar body made of a material having a melting point higher than that of the thermoplastic resin. A step of providing a through-hole or a bottomed mounting hole for inserting and assembling the columnar body into the resin molded body, and an assembling position of the outer peripheral surface of the columnar body inserted into the mounting hole at a predetermined depth. Forming the circumferential groove, inserting the columnar body into the mounting hole of the resin molded body, and setting the assembly position where the inner circumferential surface of the mounting hole and the circumferential groove of the columnar body face each other; Applying compressive force to the mounting hole peripheral part of the resin molded body from the axial direction, applying ultrasonic vibration from the compression surface, and compressing the mounting hole peripheral material melted by ultrasonic vibration heat with the compressive force The columnar body is fixed in the mounting hole of the resin molded body by flowing into the circumferential groove of the resin. Comprising the steps of, providing a method for producing assembled unit between the resin molded body and the columnar body characterized by comprising more.

  Here, a support having an insertion hole for slidingly guiding the columnar body, and abutting and supporting the mounting hole peripheral portion of the resin molded body set on the columnar body from one side in the axial direction, and the periphery of the mounting hole A compression surface that compresses the peripheral portion of the mounting hole in the axial direction with a pressurizing tool that presses the portion from the other side in the axial direction, and abuts against the peripheral portion of the mounting hole in one or both of the support tool and the pressurizing tool. It is preferable to apply ultrasonic vibration.

  More specifically, the compression surface to which the ultrasonic vibration is applied is provided with a support surface that supports the outer surface of the resin molded body, and an embedded portion that protrudes from the support surface and is embedded in the resin molded body. By applying a compressive force together with the sonic vibration, the material pushed away by the embedding portion is moved into the mounting hole, and the peripheral material of the mounting hole is press-fitted into the circumferential groove.

  Further, the present invention is a manufacturing apparatus used in these manufacturing methods, wherein the columnar body is inserted into a mounting hole of a resin molded body, and an inner peripheral surface of the mounting hole and a peripheral groove of the columnar body face each other. In a state of being set at the attachment position, a press means for applying a compressive force from the axial direction to the periphery of the mounting hole of the resin molded body and an ultrasonic application means for applying ultrasonic vibration from the compression surface are provided. A resin molded body characterized by fixing the columnar body in the mounting hole of the resin molded body by causing the peripheral material of the mounting hole melted by heat to flow into the circumferential groove of the columnar body with a compressive force; An apparatus for manufacturing an assembly with a columnar body is also provided.

  More preferably, in the resin molded body, a means for providing a through hole or a bottomed mounting hole for inserting and assembling the columnar body, and an assembling position of the outer peripheral surface of the columnar body inserted into the mounting hole are predetermined. Means for forming a circumferential groove having a depth; and means for inserting the columnar body into a mounting hole of the resin molded body and setting the mounting position in which the inner peripheral surface of the mounting hole and the circumferential groove of the columnar body face each other. The mounting hole is provided with a pressing means for applying a compressive force from the axial direction to the periphery of the mounting hole of the resin molded body, and an ultrasonic applying means for applying ultrasonic vibration from the compression surface, and is melted by ultrasonic vibration heat. An assembly of a resin molded body and a columnar body, wherein the columnar body is fixed to a mounting hole of the resin molded body by allowing a peripheral material to flow into the circumferential groove of the columnar body with a compressive force. A manufacturing apparatus is provided.

  Here, the pressing means has an insertion hole for slidingly guiding the columnar body, and a support tool that abuts and supports the periphery of the mounting hole of the resin molded body set on the columnar body from one side in the axial direction. And a pressing tool that presses the peripheral portion of the mounting hole from the other side in the axial direction, and the peripheral portion of the mounting hole is preferably compressed in the axial direction.

  Further, the ultrasonic wave imparting means can impart ultrasonic vibrations from a compression surface that abuts on the periphery of the mounting hole in one or both of the support tool and the pressure tool.

  Further, the compression surface to which the ultrasonic vibration is applied is provided with a support surface that supports the outer surface of the resin molded body, and an embedding portion that protrudes from the support surface and is embedded in the resin molded body. By applying compressive force together with ultrasonic vibration by means and ultrasonic applying means, the material pushed away by the embedding part is moved inward into the mounting hole, and the peripheral material of the mounting hole is press-fitted into the circumferential groove. Good.

  The present invention is an assembly of a resin molded body made of a thermoplastic resin and a hollow or solid columnar body made of a material having a melting point higher than that of the thermoplastic resin, the columnar body being attached to the resin molded body. A through-hole or bottomed mounting hole for insertion and assembly is provided, a circumferential groove having a predetermined depth is formed at the assembly position of the outer peripheral surface of the columnar body that is inserted into the mounting hole, and the columnar body is resin-molded A compression force is applied from the axial direction to the periphery of the mounting hole of the resin molded body with the inner peripheral surface of the mounting hole and the peripheral groove of the columnar body facing the mounting position. And mounting the resin molded body by applying ultrasonic vibration from the compression surface and allowing the peripheral material of the mounting hole to be melted by ultrasonic vibration heat to flow into the circumferential groove of the columnar body with a compressive force. An assembly of a resin molded body and a columnar body characterized by fixing the columnar body in a hole Subjected to.

  According to the present invention as described above, the mounting hole is provided with a compressive force applied from the axial direction to the peripheral portion of the mounting hole of the resin molded body, and ultrasonic vibration is applied from the compression surface and melted by ultrasonic vibration heat. By allowing the peripheral material to flow into the circumferential groove of the columnar body by compressive force, the columnar body is fixed to the mounting hole of the resin molded body, so compared to conventional mere press-fitting or adhesion by a solvent. In addition to being able to achieve strong bonding and secure enough thickness to flow into the circumferential groove, the bonding strength can be maintained even if the resin molding plate is made thin, and it is fully compatible with the recent thinning of precision parts. it can. With the conventional simple press-fitting method, the removal force is about 30 N, but with the same material and the assembly of the present invention of the same size, a removal force of 100 N or more has been confirmed.

  In addition, it is a simple method that compresses the periphery of the mounting hole of the resin molded body in the axial direction, maintains the accuracy of assembly such as the verticality of the columnar body, and does not require a specially complicated structure. The shape of the member can be applied relatively freely only by providing a circumferential groove in the columnar body, can be assembled at a low cost and in a short time, and can be handled without problems as a fixing method for precision parts.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows a resin molded body 2 and a columnar body 3 used for an assembly according to the present invention. 1 to 5 show the first embodiment, FIG. 6 shows the second embodiment, FIG. 7 shows the third embodiment, FIG. 8 shows the fourth embodiment, and FIG. 9 shows the fifth embodiment.

  As shown in FIG. 1, the assembly according to the present invention ultrasonically forms a resin molded body 2 made of a thermoplastic resin and a hollow or solid columnar body 3 made of a material having a melting point higher than that of the thermoplastic resin. It is an assembled product that is assembled by pressing while being melted by vibration heat, and is particularly suitable for electronic parts, but it is of course applicable to other various parts and products.

  First, a first embodiment will be described based on FIGS.

  The resin molded body 2 of the present embodiment exemplifies a plate-like body, but may have a shape other than the plate-like shape as in a fourth embodiment described later. If this resin molding 2 is a molding which consists of thermoplastic resins, what added various additives, such as glass, a reinforcing material, etc. can also be used.

  The resin molded body 2 is formed with a through-hole 20 through which the columnar body 3 is inserted and assembled. The columnar body 3 has a circumferential groove 30 having a predetermined depth and a predetermined width on the outer peripheral surface. It is formed.

  And about these resin molding 2 and the columnar body 3, as shown in FIG. 2, the columnar body 3 is inserted in the attachment hole 20 of the plate-shaped resin molding 2, and the inner peripheral surface of the attachment hole 20, the circumferential groove 30, and Is applied to the mounting hole peripheral portion 21 of the resin molded body 2 in the axial direction (vertical direction in the figure) and ultrasonic vibration is applied from the compression surface 6 in a state where the mounting positions are opposed to each other. The columnar body 3 is formed in the mounting hole 20 of the resin molded body 2 by causing the peripheral material of the mounting hole melted by the ultrasonic vibration heat to flow into the circumferential groove 30 with a compressive force (see an enlarged view of FIG. 3). It will be fixed.

  More specifically, a set of a mounting hole machining portion (not shown) provided with a mounting hole 20 for inserting and assembling the columnar body 3 into the resin molded body 2 and an outer peripheral surface of the columnar body inserted into the mounting hole 20. Groove processing means (not shown) for forming a circumferential groove with a predetermined depth at the attachment position, the columnar body 3 is inserted into the mounting hole 20 of the resin molded body 2, and the inner peripheral surface of the mounting hole 20 and the circumferential groove 30 Mounting means (not shown) composed of a robot arm or the like set at the mounting position facing each other, pressing means 4 for applying a compressive force to the peripheral portion of the mounting hole of the resin molded body 2 from the axial direction, and ultrasonic vibration from the compression surface Is processed using a manufacturing apparatus provided with an ultrasonic wave applying means 5 for applying.

  As shown in FIGS. 2 to 4, the pressing means 4 has an insertion hole 40 that slides and guides the columnar body 3, and the mounting hole peripheral portion 21 of the resin molded body 2 that is set in the columnar body has an axial direction. A support tool 41 that abuts and supports from one side (the lower side in the figure) and a pressurizing tool 42 that presses the mounting hole peripheral portion 21 from the other side in the axial direction (the upper side in the figure).

  The ultrasonic wave applying means 5 is oscillated by an ultrasonic oscillator (not shown) by an ultrasonic oscillator and is transmitted to the pressurizing tool 42 constituting the pressing means 4 via a cone, a horn, etc. (not shown), and around the mounting hole. The ultrasonic vibration is applied from the compression surface 6 that contacts the portion 21.

  On the compression surface 6 of the pressurizing tool 42 for inputting ultrasonic vibration to the resin molded body 2, a support surface 60 that supports the outer surface of the resin molded body 2, and a resin projecting to the front end side from the support surface 60. An embedding portion 61 that is embedded in the molded body 2 is provided. It should be noted that such an embedding portion is provided on the compression surface on the side opposite to the ultrasonic wave input side, in this example, on the support tool 41 side, other than that formed on the pressure tool 42 side on which ultrasonic vibration is input. It may be.

  Hereinafter, the manufacturing method of 1st Embodiment is demonstrated based on FIGS.

  First, a penetrating mounting hole 20 for inserting and assembling the columnar body 3 is formed in the plate-shaped resin molded body 2. The resin molded body 2 only needs to have the mounting holes 20 formed in at least the plate-like portion, and other portions may have a structure other than the plate-like shape.

  On the other hand, a circumferential groove 30 having a predetermined depth and a predetermined width is formed on the outer peripheral surface of the columnar body 3 inserted into the mounting hole 20 at an assembly position where the resin molded body 2 is to be mounted. In addition, according to the length of the mounting hole 20 of the resin molding 2, the circumferential groove 30 may be formed not only in the axial direction but also in a plurality. The columnar body 3 only needs to have a circumferential groove 30 formed on at least the outer peripheral surface, and other portions may have a structure other than the shaft shape.

  In addition, since the material of the resin molded body 2 flows into the circumferential groove 30 and is fixed, if the width of the circumferential groove 30 is too thin, the strength cannot be maintained. On the other hand, if it is too wide, the material filling of the resin molded body 2 becomes insufficient, and the perpendicularity of the assembled product is lowered. If the depth is too shallow, the pull-out strength cannot be maintained. On the other hand, if the depth is too deep, the material filling becomes insufficient and the same disadvantages as described above occur. The depth and width of the circumferential groove 30 may be determined appropriately from the material and size of the resin molded body 2 and the size of the columnar body 3 in consideration of the above points.

  In this example, the shape of the mounting hole 20 of the resin molded body 2 is circular, and the columnar body is a shaft body having a circular outer peripheral surface that is inserted into the columnar body. However, the present invention is not limited to such a shape. For example, as shown in FIG. 10, the resin molded body 2 is assembled by forming the mounting hole 20 having a shape corresponding to the columnar body 3 having an irregular shape in cross section, an arc shape, or a square shape, for example. Is possible. Moreover, both shapes do not need to be the same, for example, the columnar body 3 has a polygonal cross-sectional view, and the mounting hole 20 circumscribes it, or the columnar body 3 has a circular cross-sectional view and the mounting hole 20. It is also preferable to use a polygon circumscribing this. The columnar body 3 may be solid or may be a thin plate formed into a cylindrical shape.

  As long as the columnar body 3 is made of a material having a melting point higher than that of the thermoplastic resin constituting the resin molded body 2, the columnar body 3 is made of various other materials such as metal, synthetic resin, ceramics, wood, and composite fiber. Can be applied.

  Next, as shown in FIG. 2, resin molding is performed on a support 41 having an insertion hole 40 through which the columnar body 3 can be slid and guided inside and abutting and supporting the peripheral portion 21 of the mounting hole of the resin molding 2 from the lower surface. The body 2 is mounted, and the columnar body 3 is flush with the upper surface of the resin molded body 2 with the circumferential groove 30 facing upward with respect to the mounting hole 20 of the resin molded body 2 and the insertion hole 40 of the support tool 41. Set to position. As a result, the inner peripheral surface of the mounting hole 20 and the peripheral groove 30 face each other.

  Then, the pressurizing tool 42 is pressed down from the upper side against the resin molded body 2 and the columnar body 3 set on the support tool 41, and a compression force is applied to the mounting hole peripheral portion 21 up and down from the axial direction. Ultrasonic vibration is applied from the compression surface 6 of the tool 42. The mounting hole peripheral portion 21 of the resin molded body 2 is melted by the ultrasonic vibration heat, and the material pushed away by the embedding portion 61 of the compression surface 6 of the pressurizing tool 42 in this state is supported by the support surface 60 and the compression surface 7. However, as shown in FIG. 3, the columnar body 3 is fixed to the resin molded body 2 by moving inwardly into the mounting hole and allowing the peripheral material of the mounting hole to flow into the circumferential groove 30.

  Next, the manufacturing method of 2nd Embodiment is demonstrated based on FIG.

  In the first embodiment, ultrasonic vibration is applied from the compression surface 6 of the pressurizing tool 42, and the mounting hole peripheral portion 21 of the resin molded body 2 is mainly inward of the mounting hole 61 in the pressurizing tool 42. Although what was moved was demonstrated, in this embodiment, the ultrasonic vibration was simultaneously given not only from the compression surface 6 of the pressurization tool 42 but the compression surface 7 by the side of the support tool 41, and it formed in the said compression surface 7. The mounting hole peripheral part 21 is pressed from both the embedding part 71 and the embedding part 61 on the pressurizing tool 42 side so that the mounting hole peripheral part material efficiently flows into the circumferential groove 30.

  In this case, the amount of protrusion of each of the embedded portions 61 and 71 is smaller than that of the embedded portion 61 of the first embodiment, and the pressing marks formed on the assembly are also the first embodiment. Then, although a deep pressing mark remained on the pressurizing tool side, in this example, only a shallow pressing mark remains on both sides, which is good in appearance and advantageous in terms of strength. The embedded portions 61 and 71 may be provided at positions facing each other as shown in the figure, but if they are provided at positions that are not opposed to each other, the pressing marks are also shifted from each other, which is more advantageous in terms of strength.

  If ultrasonic vibration is input from the support tool 41 side as in this example, processing can be performed in the same manner as in the first embodiment. Therefore, without inputting ultrasonic vibration from the pressurizing tool 42 side, What was input only from the support tool 41 side may be used. The materials, structures, and other modifications of the columnar body 3 and the resin molded body 2 can be applied as in the first embodiment.

  Next, a third embodiment will be described based on FIG.

  In the first and second embodiments, the mounting hole 20 formed in the resin molded body 2 is a through hole. However, in the present embodiment, the mounting hole 20 is assembled to the bottomed mounting hole 20. Thus, even if the mounting hole 20 does not penetrate, the resin molded body 2 and the columnar body 3 can be assembled by the same method. In FIG. 7, ultrasonic vibration is input from the pressurizing tool 42 side and the mounting hole peripheral portion 21 is pushed out by the embedding portion 61 of the compression surface 6 to cause the mounting hole peripheral portion material to flow into the circumferential groove 30. Of course, ultrasonic vibration may be input from the support tool 41 side, or may be input from both sides as described in the second embodiment. Moreover, the raw material of the columnar body 3 and the resin molded body 2, the structure, and other modifications can be applied in the same manner as in the first embodiment.

  Next, a fourth embodiment will be described based on FIG.

  In each of the above embodiments, an example in which a plate-like body is used as the resin molded body 2 has been described. However, as described above, other shapes may be used. In the present embodiment, an example in which the resin molded body 2 is not a plate but a solid body having a width will be described.

  In this case, the length of the mounting hole 20 becomes long. The circumferential groove 30 of the columnar body 3 is formed at a position close to the pressurizing tool 42 side where ultrasonic vibration is input, and is set so that the molten material around the mounting hole flows into the circumferential groove 30 efficiently. As in this example, when the mounting hole 20 is long, it is desirable to form a plurality of circumferential grooves 30. In particular, as described in the second embodiment, if the ultrasonic vibration is simultaneously input also from the support tool 41 side and the circumferential groove 30 is further formed at a position close to the compression surface 7 of the support tool 41, it is long. Since it can fix at the both ends of the mounting hole 20, since firm mounting strength is obtained, it is preferable. The materials, structures, and other modifications of the columnar body 3 and the resin molded body 2 can be applied as in the first embodiment.

  Next, a fifth embodiment will be described based on FIG.

  Although each said embodiment demonstrated the example which assembles the resin molding 2 to the edge part of the columnar body 3, this embodiment demonstrates the example which assembles the resin molding 2 to the axial direction middle part of the columnar body 3. FIG. . In this example, a spacer member 8 having a compression surface 6 formed at the lower end is separately attached to a portion of the columnar body 3 set on the support 41 protruding above the resin molded body 2.

  Then, by pressing down the spacer member 8 with the pressurizing tool 42 from above, the mounting hole peripheral portion 21 of the resin molded body 2 is compressed with the support tool 41 via the spacer member 8, and added. Ultrasonic vibration is input from the pressure tool 42 to the peripheral portion 21 of the mounting hole through the spacer member 8, and the molten peripheral portion material flows into the circumferential groove 30 and the assembly 1 is the same as in the first embodiment. can get.

  The spacer member 8 is configured to have a bottomed shape that opens to the lower side, but may be configured to have a cylindrical shape that also opens on the upper side. The spacer member 8 is made of a metal material or the like that can efficiently transmit ultrasonic vibration from the pressurizing tool 42, and is preferably made of the same material as the pressurizing tool 42. Instead of providing the spacer member 8, it is also preferable that a cylindrical portion similar to the spacer member 8 is integrally formed at the lower end portion of the pressurizing tool 42. In addition, the materials and structures of the columnar body 3 and the resin molded body 2, the ultrasonic wave input direction, and other modifications can be applied in the same manner as in the first and second embodiments.

As mentioned above, although embodiment of this invention was described, this invention is not limited to such embodiment at all, Of course, it can implement with a various form in the range which does not deviate from the summary of this invention.

  Next, the results of a pull-out strength test for each assembled product of Examples 1 and 2 assembled by the manufacturing method of the present invention will be described.

In Examples 1 and 2, 30% glass-containing polycarbonate resin (a material often used for a lens barrel of a digital camera) is formed at the end of a cylindrical shaft body made of stainless steel by the method of the first embodiment. Table 1 shows the outer diameter of the shaft body and the plate thickness of the plate-like molded body. The processing conditions were an ultrasonic frequency of 40 KHz, a processing time of 1 second, and an atmospheric pressure of 3 kgf / cm ² .

  The pulling strength was measured by measuring the maximum pulling force (extraction force) until the plate-shaped molded body was fixed on the base, the shaft body extending upward was grabbed and pulled upward, and pulled out from the mounting hole of the plate-shaped molded body. As shown in Table 2, the test results confirmed sufficient strength.

  Further, as Example 3, a plate-like molded body (plate thickness 2 mm) made of polyacetal resin (POM) at the end of a stainless steel columnar shaft body (outer diameter 2 mm) by the method of the first embodiment. FIG. 11 shows a cross-sectional photograph in which an assembled product is assembled and cut along the outer peripheral surface of the shaft. From the photograph of FIG. 11, it can be seen that the material around the mounting hole of the plate-shaped molded body is filled in the circumferential groove of the shaft body and is securely attached by biting.

The perspective view which shows each member of the assembly | attachment goods which concern on 1st Embodiment of this invention. Similarly, sectional drawing which shows the state which attached each member to the support tool 41 in 1st Embodiment. Sectional drawing which shows a mode that the material of the molten attachment hole periphery part is filled with a circumferential groove. Sectional drawing which shows a mode that assembly was completed. Sectional drawing which shows the assembly | attachment goods which the assembly | attachment completed similarly. (A) And (b) is sectional drawing which shows the manufacturing method of 2nd Embodiment. (A) And (b) is sectional drawing which shows the manufacturing method of 3rd Embodiment. (A) And (b) is sectional drawing which shows the manufacturing method of 4th Embodiment. (A) And (b) is sectional drawing which shows the manufacturing method of 5th Embodiment. Explanatory drawing which shows the modification of each member of an assembly | attachment. (A) is a cross-sectional photograph of Example 3, and (b) is an enlarged photograph thereof.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Assembly product 2 Resin molded object 3 Columnar body 4 Press means 5 Ultrasonic provision means 6 Compression surface 7 Compression surface 8 Spacer member 20 Mounting hole 21 Mounting hole peripheral part 30 Circumferential groove 40 Insertion hole 41 Support tool 42 Pressure tool 60 Support surface 61 Buried part 70 Support surface 71 Buried part

Claims (9)

A method for producing an assembly of a resin molded body made of a thermoplastic resin and a hollow or solid columnar body made of a material having a melting point higher than that of the thermoplastic resin,
Providing the resin molded body with a through-hole or bottomed mounting hole for inserting and assembling the columnar body; and
Forming a circumferential groove of a predetermined depth at the assembly position of the columnar body outer circumferential surface to be inserted into the mounting hole;
Inserting the columnar body into the mounting hole of the resin molded body, and setting the mounting position in which the inner peripheral surface of the mounting hole and the circumferential groove of the columnar body face each other;
Applying compressive force to the mounting hole peripheral portion of the resin molded body from the axial direction, applying ultrasonic vibration from the compression surface, and compressing the mounting hole peripheral material melted by ultrasonic vibration heat with the compressive force A step of fixing the columnar body to the mounting hole of the resin molded body by flowing into the peripheral groove of
A method for producing an assembly of a resin molded body and a columnar body, comprising:   A support member that has an insertion hole for slidingly guiding the columnar body, and that abuts and supports the mounting hole peripheral portion of the resin molded body set on the columnar body from one side in the axial direction; The peripheral portion of the mounting hole is compressed in the axial direction by a pressing tool pressed from the other side in the direction, and ultrasonic vibration is generated from a compression surface that abuts the peripheral portion of the mounting hole in one or both of the support tool and the pressing tool. The manufacturing method of the assembly | attachment of the resin molding and columnar body of Claim 1 formed by providing.   Provided on the compression surface to which the ultrasonic vibration is applied is a support surface that supports the outer surface of the resin molded body, and an embedding portion that protrudes from the support surface and is embedded in the resin molded body. The combination of the resin molded body and the columnar body according to claim 1 or 2, wherein the material displaced by the embedding portion is moved inwardly into the mounting hole and the peripheral material of the mounting hole is press-fitted into the circumferential groove. A method of manufacturing accessories.   It is a manufacturing apparatus used for the manufacturing method of the assembly of the resin molded body and the columnar body according to any one of claims 1 to 3, wherein the columnar body is inserted into a mounting hole of the resin molded body, A pressing means for applying a compressive force from the axial direction to the periphery of the mounting hole of the resin molded body in a state where the inner peripheral surface of the mounting hole and the peripheral groove of the columnar body are opposed to each other; And mounting the resin molded body by causing the peripheral material of the mounting hole to be melted by ultrasonic vibration heat to flow into the circumferential groove of the columnar body by compressive force. An apparatus for manufacturing an assembly of a resin molded body and a columnar body, wherein the columnar body is fixed to a hole.   It is a manufacturing apparatus used for the manufacturing method of the assembly | attachment of the resin molding and columnar body of any one of Claims 1-3, Comprising: For inserting and assembling | attaching a columnar body to the said resin molding body Means for providing a through hole or a bottomed mounting hole, means for forming a circumferential groove of a predetermined depth at the assembly position of the outer peripheral surface of the columnar body inserted into the mounting hole, and the columnar body of the resin molded body A means for inserting into the mounting hole and setting at a mounting position in which the inner peripheral surface of the mounting hole and the peripheral groove of the columnar body face each other, and a press for applying a compressive force from the axial direction to the peripheral portion of the mounting hole of the resin molded body Means and ultrasonic application means for applying ultrasonic vibration from the compression surface, and by allowing the peripheral material of the mounting hole to be melted by ultrasonic vibration heat to flow into the circumferential groove of the columnar body by compressive force. A resin molded body and a column, wherein the columnar body is fixed to a mounting hole of the resin molded body. Assembled unit of the manufacturing apparatus of the body.   The pressing means has an insertion hole for slidingly guiding the columnar body, and supports the peripheral portion of the mounting hole of the resin molded body set on the columnar body from one side in the axial direction, and the mounting A pressurizing tool that presses the peripheral portion of the hole from the other side in the axial direction, and the assembly of the resin molded body and the columnar body according to claim 4 or 5, wherein the mounting hole peripheral portion is compressed in the axial direction. Manufacturing equipment.   The resin molded body and the columnar body according to claim 6, wherein the ultrasonic wave imparting means imparts ultrasonic vibration from a compression surface in contact with a peripheral portion of the mounting hole in one or both of the support tool and the pressure tool. Manufacturing equipment for assembly.   The compression surface to which the ultrasonic vibration is applied is provided with a support surface that supports the outer surface of the resin molded body, and an embedding portion that protrudes from the support surface and is embedded in the resin molded body. 8. The compressive force is applied together with the ultrasonic vibration by the ultrasonic wave applying means, so that the material pushed away by the embedding portion is moved inward of the mounting hole, and the peripheral material of the mounting hole is press-fitted into the circumferential groove. The manufacturing apparatus of the assembly | attachment of the resin molded object of any one, and a columnar body. An assembly of a resin molded body made of a thermoplastic resin and a hollow or solid columnar body made of a material having a melting point higher than that of the thermoplastic resin, and the columnar body is inserted into the resin molded body and assembled. A through hole or a bottomed mounting hole is formed, a circumferential groove having a predetermined depth is formed at the assembly position of the outer peripheral surface of the columnar body inserted into the mounting hole, and the columnar body is attached to the mounting hole of the resin molded body In a state where the inner peripheral surface of the mounting hole and the peripheral groove of the columnar body are set at the mounting position facing each other, a compressive force is applied to the peripheral portion of the mounting hole of the resin molded body from the axial direction, and By attaching ultrasonic vibration from the compression surface and flowing the peripheral material of the mounting hole melted by ultrasonic vibration heat into the circumferential groove of the columnar body by compressive force, the columnar shape is attached to the mounting hole of the resin molded body. An assembly of a resin molded body and a columnar body characterized by fixing the body.