JP5459847B2 - Manufacturing method of holding jig - Google Patents

Description

  The present invention relates to a method for manufacturing a holding jig, and more particularly to a method for manufacturing a holding jig that maintains the flatness of a reinforcing member even though a large number of small parts can be held.

  Integrated circuits and the like used in electronic devices such as computers, telephones, game machines, and automobile electrical devices are equipped with small components such as a multilayer ceramic chip capacitor (sometimes simply referred to as a chip capacitor). . When manufacturing such a small component, a holding jig in which a holding hole for holding a small component member or the like capable of manufacturing a small component is usually used. As such a holding jig, for example, Patent Document 1 discloses that “(a) a plate body having a large number of parallel through passages is provided. (B) The passage has an elastic wall and has a small electrical part. Can be positioned in the passage, and the dimension of the passage is smaller than the dimension of the corresponding part, and the part is elastically gripped at the position in the passage. A large number of electrical device for coating the ends of small electrical parts ”.

  These holding jigs and the like are manufactured, for example, by storing a reinforcing member in a mold, and then molding after injecting an elastic material such as rubber. For example, Patent Document 2 states that “a pre-molding mold that is opened and closed with a crack along a horizontal plane, and a plate body pre-applied with an adhesive is disposed horizontally in the mold, and then the mold After injecting additional silicone rubber from the injection port installed on the outer peripheral surface of the mold into the void in the molding die formed on the outer periphery of the plate body, the additional silicone rubber is heated and vulcanized. Describes a method for producing a carrier plate, characterized in that a plate body and an addition-type silicone rubber are adhered to each other.

  When a holding jig is manufactured using a mold in which such forming pins are erected, for example, as shown in FIG. When the holding jig 51 is released from the mold, the plurality of molding pins 55 erected on the mold 50 are positioned near the central portion of the reinforcing member 52 due to frictional stress generated when the molding pins 55 are extracted from the elastic member 54. The molding pin 55 is more difficult to pull out than the molding pin 55 located in the vicinity of the edge of the reinforcing member 52. As a result, the reinforcing member 52 may be bent or deformed, and the flatness thereof may be lowered.

  By the way, in recent years, demand for electronic components has increased, and therefore it is desired to improve productivity in the manufacture of electronic components. As a method for realizing such a demand, for example, there is a method of increasing the size of the holding jig, and a method of increasing the number of holding holes formed in the holding jig, that is, the number of electronic components that can be manufactured with one holding jig. Can be mentioned. However, when the size of the holding jig is increased and the number of electronic components that can be manufactured with one holding jig is increased, the strength of the reinforcing member that holds the elastic member smoothly decreases greatly. When the holding jig is manufactured by the manufacturing method using the reinforcing member having such reduced strength, as shown in FIG. 8, the holding portion 51 of the holding jig 51 is gripped to hold the holding jig from the mold 50. When the tool 51 is released, the flatness of the holding jig 51 is greatly impaired because the low-strength reinforcing member 52 is greatly curved or deformed and its flatness is greatly reduced.

  As a manufacturing method of a holding jig capable of solving such a problem, for example, Patent Document 3 discloses that “a plurality of through holes are formed and a strength reinforcing portion is formed in a region where the through holes are formed. A flat core material having a portion is inserted into a mold having an extruding means and a plurality of molding pins so that the molding pin is positioned in the through hole, and the mold and the core material are inserted. An elastic material is injected into the gap formed by forming an elastic material, the strength reinforcing portion is extruded by the extruding means, and the holding jig is released from the mold. "Manufacturing method" has been proposed (claim 4).

Japanese Examined Patent Publication No. 62-20585 JP 2004-17549 A JP 2008-16761 A

  It is an object of the present invention to provide a method for manufacturing a holding jig that can maintain the flatness of a reinforcing member even though a large number of small parts can be held.

As means for solving the problems,
According to a first aspect of the present invention, a reinforcing member having a support hole and an elastic member having a holding hole for elastically holding a small component inserted therein are provided, and the holding hole is formed inside the support hole. A manufacturing method of manufacturing a holding jig in which the reinforcing member is embedded in the elastic member so as to pass through a molding die, and having a thickness greater than that of the elastic member by a depression formed in the molding die. The integral molded body of the reinforcing member and the elastic material is released from the molding die while pushing the formed thick part with a pushing member, and then the thick part of the integral molded body is removed. A method of manufacturing a holding jig, characterized in that
According to a second aspect of the present invention, a reinforcing member having a support hole and an elastic member having a holding hole for elastically holding a small component inserted therein are provided, and the holding hole is formed inside the support hole. A manufacturing method for manufacturing a holding jig in which the reinforcing member is embedded in the elastic member so as to pass through a molding die, the molding die including a first die and a second die, A depressed portion that is depressed with respect to the other mold in at least one of the first mold and the second mold, and a pushing member provided so as to protrude from the depressed portion toward the other mold; A plurality of molding pins erected toward the other mold, and the molding pins pass through the support holes in or between the first mold and the second mold. An arrangement step of arranging the reinforcing member, and an elastic material filled in a cavity in the molding die. A molding step for heating to form an integrally molded body having a thick portion, and a mold release for releasing the thick portion of the integrally molded body obtained in the molding step from the molding die while pushing the thick portion by the pushing member. A method of manufacturing a holding jig, comprising: a step and a removing step of removing the thick portion of the integrally molded body removed from the molding die,
According to a third aspect of the present invention, the first mold includes a depressed portion that is depressed with respect to the second mold, a pushing member that is protruded from the depressed portion toward the second mold, The holding jig manufacturing method according to claim 2, wherein the holding jig has a large number of forming pins erected toward the second mold.
According to a fourth aspect of the present invention, the first mold includes a first concave portion in which the depressed portion is formed and a storage concave portion in which the reinforcing member is accommodated. A method for manufacturing a holding jig,
5. The method for manufacturing a holding jig according to claim 4, wherein the second mold has a second recess that forms the storage recess together with the first recess. ,
The sixth mold according to any one of claims 3 to 5, wherein the second mold has the molding pin erected toward the first mold. A method for manufacturing a holding jig,
According to a seventh aspect of the present invention, the second mold includes a depressed portion that is depressed with respect to the first mold, and a pushing member that is provided so as to protrude from the depressed portion toward the first mold. The method of manufacturing a holding jig according to any one of claims 3 to 6, wherein the holding jig is manufactured.

  The manufacturing method of the holding jig according to the present invention is such that the thick portion formed thicker than the elastic member of the holding jig by the depressed portion formed in the molding die is pushed by the pushing member of the molding die. However, since the thick portion is removed after releasing the integrally molded body from the molding die, that is, since each step is included, in order to improve the productivity of the holding jig, a large number of supports are supported by the reinforcing member. Even if the hole is formed or the reinforcing member itself is enlarged, the integrally molded body can be removed from the molding die without substantially deforming the reinforcing member. Therefore, according to the present invention, it is possible to provide a method for manufacturing a holding jig that maintains the flatness of the reinforcing member even though the majority of small parts can be held.

FIG. 1 is a schematic top view showing a holding jig which is an example of a holding jig according to the present invention. FIG. 2 is a schematic cross-sectional view showing a part of a cross section of the holding jig cut along line AA in FIG. FIG. 3 is a schematic top view showing a reinforcing member which is an example of a reinforcing member in the holding jig according to the present invention. FIG. 4 is a schematic explanatory view illustrating a method for manufacturing a holding jig using an example of a molding die used in the method for manufacturing a holding jig according to the present invention. FIG. 5 is a schematic explanatory view illustrating a method for manufacturing a holding jig using another example of a molding die used in the method for manufacturing a holding jig according to the present invention. FIG. 6 is a schematic explanatory view illustrating a method for manufacturing a holding jig using another example of a molding die used in the method for manufacturing a holding jig according to the present invention. FIG. 7 is a schematic explanatory view illustrating a method for manufacturing a holding jig using still another example of a molding die used in the method for manufacturing a holding jig according to the present invention. FIG. 8 is a schematic explanatory view for explaining a state in the middle of removing the conventional holding jig from the molding die.

  A holding jig manufactured by the method for manufacturing a holding jig according to the present invention (hereinafter sometimes referred to as a holding jig according to the present invention) is inserted into a reinforcing member having a support hole and itself. And an elastic member formed with a holding hole for elastically holding the small component, and a part of the reinforcing member is embedded in the elastic member so that the holding hole passes through the inside of the support hole. The holding jig according to the present invention can elastically hold the small component inserted into the holding hole by the elastic force of the elastic member. This holding jig is suitable for holding a small component, which will be described later. For example, the holding jig is more suitable for holding a small component that needs to be coated with a conductive paste for electrode formation in at least two places.

  A holding jig 1 as an embodiment of the holding jig according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the holding jig 1 includes a reinforcing member 2 having a support hole 7 and an elastic member 3 having a holding hole 9, and each of the holding holes 9 has the support hole 7. A part of the reinforcing member 2 is embedded in the elastic member 3 so as to pass through each inside.

  As shown well in FIG. 2, the reinforcing member 2 reinforces the elastic member 3 so that the flat portion 5 in which the support hole 7 is formed is embedded in at least an elastic member 3 described later, and the elastic member 3 becomes flat. To support. As shown in FIGS. 2 and 3, the reinforcing member 2 includes a rectangular flat portion 5 having a large number of support holes 7, and a thickness direction of the flat portion 5 around the flat portion 5, that is, an upper surface direction. And the collar part 6 protruded in the lower surface direction is provided. The flange portion 6 is also referred to as a flange portion, is formed so as to surround the flat portion 5, and is adjusted so that the protruding amount of the flat portion 5 in the upper surface direction and the lower surface direction is constant. The thickness of the collar part 6 is adjusted suitably, for example, is set in the range of 8.9-10.0 mm. As shown in FIGS. 2 and 3, the flat portion 5 is a region where a support hole 7 penetrating in the thickness direction is formed, and the flat portion 5 has a constant thickness and is formed flat. The thickness of the flat part 5 is adjusted suitably, for example, is set in the range of 5.9-7 mm.

  The support holes 7 have a large number, for example, 5000 or more, preferably at least 6000, more preferably at least 7000, particularly preferably so as to penetrate almost the entire area in the flat portion 5 in the thickness direction. At least 7500 are formed (a part of the support hole 7 is not shown in FIG. 3). When a large number of support holes 7 are formed in almost the entire area of the reinforcing member 2, particularly the flat portion 5, the productivity in the method of manufacturing a small part using the holding jig 1 can be greatly improved. The support holes 7 are usually formed in the same pattern as the pattern in which the holding holes 9 described later are formed. In this example, the support holes 7 are drilled in a grid pattern. The opening of the support hole 7 is circular, but may be polygonal or the like. The inner diameter of the support hole 7 is larger than that of the holding hole 9.

  The reinforcing member 2 only needs to be formed of a material capable of maintaining the elastic member 3 in a flat shape, and examples of such a material include metals and resins.

  As shown in FIGS. 1 and 2, the elastic member 3 has a plurality of holding holes 9, and has a gap that can accommodate the flat portion 5 therein. 2, the elastic member 3 embeds the flat portion 5 of the reinforcing member 2, in other words, covers both surfaces of the flat portion 5 and penetrates into the support holes 7 of the reinforcing member 2 to reinforce. It is formed so as to be flush with the flange 6 of the member 2. That is, the elastic member 3 is disposed on the surface of the flat portion 5 and is surrounded by the flange portion 6 of the reinforcing member 2. Here, as shown in FIG. 2, the elastic member 3 has a flat portion 5 embedded so that the holding hole 9 passes through the inside of the support hole 7, and preferably the holding hole 9 is an axis C of the support hole 7. The flat portion 5 is embedded so as to have the common axis C.

  As shown in FIGS. 1 and 2, the elastic member 3 has a plurality of holding holes 9 penetrating in the thickness direction thereof and elastically holding small parts inserted or inserted therein by its elastic force. Have. The elastic member 3 has a large number of holding holes 9, for example, 5000 or more, preferably at least 6000, more preferably at least 7000, particularly preferably at least 7500 (in FIG. The part is not shown.) When a large number of holding holes 9 are formed in the elastic member 3, the productivity in the method for manufacturing a small component using the holding jig 1 can be greatly improved. The thickness of the elastic member 3 (distance between both outer surfaces) is adjusted to the same thickness as the holding jig 1 and is usually adjusted to 8.9 to 10.0 mm.

  The holding holes 9 are arranged in a predetermined pattern, and in this example, the holding holes 9 are perforated in a grid pattern. The arrangement interval of the holding holes 9 is the same as the arrangement interval of the support holes 7, and can be arbitrarily adjusted depending on the size of a small component inserted and held in the holding jig 1. The opening of the holding hole 9 is circular, but may be polygonal or the like. The holding hole 9 has an opening diameter, an inner diameter, or a width smaller than the diameter or the width of the portion of the small component inserted into the holding hole 9.

  The elastic member 3 is formed of a material that can be elastically deformed to insert and hold a small component. Examples of such a material include rubber and elastomer, and more specifically, silicone rubber.

  The small component held by the holding jig according to the present invention is a small component member that can be manufactured in a small component manufacturing process, a transport process, etc. , Members for small machine elements, members for small electronic components, and the like. In addition, since the manufacture of small parts includes a process of transporting small parts, the small parts include small parts themselves, for example, small appliances, small mechanical elements, and small electronic parts. Therefore, in the present invention, it is not necessary to clearly distinguish between a small component and a small component member, and even when referred to as a “small component”, it may mean “small component and small component member”. As a small electronic component and a member for a small electronic component, for example, a finished product or an unfinished product such as a chip capacitor, an inductor chip, a resistor chip, etc., and / or, for example, a prism or cylinder, Examples thereof include a prismatic body or cylindrical body having ridges at one end, and a prismatic body or cylindrical body having heels at both ends. Such a small component has, for example, an axial length of 1.0 to 3.2 mm and a diameter (when the cross-sectional shape is circular) or a width of a portion inserted into the holding hole in a plane perpendicular to the axial line. (For example, when the cross-sectional shape is not circular, a rectangle or the like) has a size of 0.5 to 1.6 mm.

  The method for manufacturing a holding jig according to the present invention includes a reinforcing member having a support hole and an elastic member having a holding hole that elastically holds a small component inserted therein, A holding jig in which the reinforcing member is embedded in the elastic member such that a hole passes through the inside of the support hole, for example, a manufacturing method for manufacturing the holding jig 1 with a molding die, The integral molded body of the reinforcing member and the elastic material is released from the molding die while the thickened portion formed thicker than the elastic member is pushed by the pushing member by the depressed portion formed in the mold. Then, the manufacturing method of the holding jig, wherein the thick part is removed. According to this manufacturing method, even if a large number of support holes are formed by the reinforcing member 2 or the reinforcing member 2 itself is enlarged to improve the productivity of the holding jig, the reinforcing member having reduced strength is substantially reduced. The integrally molded body can be removed from the molding die without being deformed.

  More specifically, the manufacturing method of the holding jig according to the present invention is a manufacturing method of manufacturing the holding jig according to the present invention using a molding die, and the molding die includes a first mold and a first mold. 2 molds, and at least one of the first mold and the second mold can be depressed with respect to the other mold, and can protrude from the depressed part toward the other mold. A pushing member provided, and a plurality of molding pins erected toward the other mold, and the support hole is formed in or between the first mold and the second mold. An arrangement step of arranging the reinforcing member so that the molding pin penetrates, a molding step of heating an elastic material filled in a cavity in the molding die to form an integral molded body having a thick portion; The thick part of the integrally molded body obtained in the molding process is released from the molding die while being pushed by the pushing member. Has a releasing step and a removing step of removing the thick portion of the integrally molded body is released from the molding die.

  A manufacturing method for manufacturing the holding jig 1 (hereinafter sometimes referred to as a first method according to the invention) as an example of a method for manufacturing the holding jig according to the present invention will be described with reference to the drawings. . In the first method according to the present invention, first, an elastic material for forming the molding die 10, the reinforcing member 2, and the elastic member 3 is prepared. FIG. 4 is a schematic cross-sectional view of the state in which the reinforcing member 2 is housed in the molding die 10 taken along the vertical plane.

  As shown in FIG. 4, the molding die 10 used in the first method according to the present invention includes a first die 21 and a second die 22, which are formed when these are overlapped, and the reinforcement A housing recess 31 for housing the member 2 is provided.

  The first mold 21 includes a first recess 33 that forms the housing recess 31, a first recessed portion 35 that is recessed substantially in the center of the first recess 33 and that is recessed with respect to the second mold 22, The storage recess 31 from the bottom surface 38 of the first depression 35, in other words, a plurality of pushing members 41 provided so as to protrude toward the reinforcing member 2, and the first depression 33 and the depression 35 are erected. The first forming pin 42 is provided. Thus, the 1st metal mold | die 21 is a well-known metal mold | die for forming a holding jig except for having the said 1st depression part 35 and the pushing member 41, for example, patent 4007587. This is basically the same as the “holding plate mold” described in the specification.

  The first recess 33 is formed so that the storage recess 31 has a shape and a size capable of storing the reinforcing member 2. Specifically, the first recess 33 can store from approximately half in the thickness direction of the reinforcing member 2. Shaped and dimensioned.

  The first recessed portion 35 is recessed one step lower than the first recessed portion 33 and can also be referred to as a recessed portion. The first depressed portion 35 is a space filled with an elastic material that forms a thick portion to be removed when the holding jig 1 is used, and the depth and the opening area of the first depressed portion 35 are the heights of the first molding pin 42. The number is determined according to the number, the diameter of the first molding pin 42, the molding material to be filled, the thickness of the flat portion 5, and the like. The first depression 35 is formed in, for example, a rectangle, a circle, an ellipse or the like whose opening area is equal to or less than the surface area of the flat portion 5. The depth of the first depressed portion 35 is not particularly limited. However, if the depth is too deep, the amount of the elastic material to be removed increases. Therefore, for example, it is preferably about 1 to 5 mm. The first depressed portion 35 corresponds to the depressed portion according to the present invention.

  As shown in FIG. 4, the pushing member 41 is a cylindrical body or a wall-like body having substantially the same outer diameter as the passage 44 formed through in the thickness direction of the first mold 21. It is possible to move forward and backward in the passage 44 in the axial direction. The pushing member 41 moves backward so that the tip surface thereof is substantially flush with the bottom surface 38 of the first depressed portion 35, moves forward toward the storage recess 31 and protrudes from the bottom surface 38 of the first depressed portion 35, The integral molded body molded in the storage recess 31 can be removed. Although a single pushing member 41 may be provided, it is preferable that a plurality of pushing members 41 are provided in order to achieve the object of the present invention well. In this case, a plurality of pushing members 41 are synchronized. It is preferable to be configured to be able to move forward and backward. For example, as shown in FIG. 4, a configuration in which a plurality of pushing members 41 are erected on a single base body 45 can be mentioned.

  The first forming pins 42 are arranged in the same manner as the support holes 7 so as to penetrate the support holes 7 when the reinforcing member 2 is disposed in the storage recess 31, and have a cross-sectional shape substantially the same as that of the holding holes 9. Formed in the body. A plurality of the first molding pins 42 are erected at substantially the same height as the storage recess 31. In other words, the first molding pin 42 is formed so as to extend from one of the facing inner surfaces of the storage recess 31, that is, from the bottom surface of the first mold 21 to the inner surface of the second recess 34 in the second mold 22. ing.

  When the second mold 22 is formed into the molding mold 10, that is, when stacked on the first mold 21, the second mold 22 forms a storage recess 31 in which the reinforcing member 2 is stored together with the first recess 33. The recess 34 and the second molding pin 43 provided in the second recess 34 in the same number as the first molding pin 42 are provided. Thus, the second mold 22 is basically the same as the first mold 21 except that it does not have the arrangement of the second molding pins and the first depressed portion 35 and the pushing member 41. The same as above.

  In the molding die 10, the first die 21 is fixed to a heating member or the like (not shown), and can also be referred to as a fixed die, and the second die 22 is not fixed to the heating member or the like (not shown). It is configured to move forward and backward toward the first mold 21 and can also be referred to as a movable mold.

  In the first method according to the present invention, an elastic material for forming the reinforcing member 2 and the elastic member 3 is prepared. Examples of the elastic material include a rubber composition and an elastomer composition that can form the elastic member 3. For example, “KE-1950-60A / B” (manufactured by Shin-Etsu Chemical Co., Ltd.), which is a liquid silicone rubber composition, etc. Is mentioned. The reinforcing member 2 can be manufactured as follows. For example, a plate-like body having a flat portion in which the support hole 7 is not formed and the flange portion 6 around the plate portion is desired from the metal or resin plate that is the same as or thicker than the flange portion 6. Cut to dimensions. Alternatively, the flat portion in which the support hole 7 is not formed and the flange portion 6 are separately manufactured, and the flat portion and the flange portion 6 are bonded to a desired position by a joining means such as welding or adhesion, and the plate A body is produced. The reinforcing member 2 is manufactured by drilling a large number of support holes 7 having a predetermined shape and diameter in the flat portion of the plate-shaped body thus manufactured by grinding, cutting, file finishing, or the like. Or the flat part 5 and the collar part 6 in which the support hole 7 was formed are produced separately, and the flat part or the flat part 5 and the collar part 6 are joined to a desired position by joining means such as welding or adhesion. Thus, the reinforcing member 2 is produced. Note that an adhesive, a primer, or the like may be applied to the surface of the flat portion 5 in order to enhance the close contact with the elastic member 3.

  In the first method according to the present invention, as shown in FIG. 4, the support hole 7 is formed in the housing recess 31 of the first mold 21 and the second mold 22, and the first molding pin 42 and the second molding pin 43. The placement step of placing or storing the reinforcing member 2 is performed so as to penetrate.

  In the first method according to the present invention, as shown in FIG. 4, the elastic material filled in the cavity in the molding die 10 is then heated to form an integral molded body having a thick portion. Perform the molding process. The cavity is formed by the first recess 33 of the first mold 21, the second recess 34 of the second mold 22, the reinforcing member 2, the first molding pin 42 and the second molding pin 43. It is a space inside. The cavity is filled with, injected or arranged with an elastic material, and the elastic material is heated and cured together with the molding die 10 by a heating means (not shown). The molding method of the elastic material is not particularly limited, and for example, a molding method such as compression molding, injection molding, or transfer molding can be employed. The molding temperature, molding time, and the like may be any temperature and time at which the elastic material to be used is cured and molded, and can be arbitrarily adjusted according to the elastic material. When the elastic material is cured in this way, the elastic member is composed of a base portion formed by hardening the elastic member filled in the first concave portion 33 and the second concave portion 34, and an elasticity filled in the first depressed portion 35. The material is molded into a thick part thicker than the base part. Since this thick portion is pushed by a pushing member as will be described later, it can be called a pushed portion.

  In the first method according to the present invention, next, after forming the integrally molded body of the reinforcing member 2 and the elastic material in this way, the mold 30 is allowed to cool and the second mold is released. Perform the mold process. In the second mold releasing step, the second mold 22 is relatively separated from the first mold 21. At this time, the integrally molded body housed in the housing recess 31 is in a state in which the first molding pin 42 erected on the first mold 21 is inserted, so the second molding erected on the second mold 22. The frictional stress or the like when the pin 43 is removed from the integrally molded body is absorbed and offset, and the second mold 22 is detached from the integrally molded body without substantially bending or deforming the reinforcing member 2.

  Next, in the first method according to the present invention, a first release step is performed in which the thick portion of the integrally molded body is released from the first mold 21 while being pushed by the pushing member 41. In the first mold releasing step, the flange portion 6 of the reinforcing member 2 exposed from the first mold 21 is gripped by, for example, a clamp, a robot arm, etc., and the integrally molded body is relatively separated from the first mold 21. At the same time, the thick member is pushed or pressed in the same direction by the pushing member 41 of the first mold 21 to release the holding jig 1 from the first mold 21. At this time, the speed at which the holding jig 1 is pulled apart by the gripping means and the speed at which the thick portion formed in the integrally molded body is pushed by the pushing member 41 are substantially the same, but the reinforcing member 2, that is, the holding member This is preferable in that the integrally molded body can be easily released from the first mold 21 while highly preventing the bending and deformation of the jig 1. In this way, by pushing the thick portion by the pushing member 41, the integral molded body can be easily released from the first mold 21 without substantially bending or deforming the reinforcing member 2. Can do.

  Next, in the first method according to the present invention, a removing step of removing the thick portion of the integrally molded body removed from the molding die 10 is performed. As the removing step, means capable of removing the thick portion can be employed, and examples of such means include surface grinding, milling grinding, and lapping.

  In the first method according to the present invention, the elastic member 3 formed in this way may have a molding burr in the vicinity of the opening of the holding hole 9 or the like. Surface treatment may be performed. As such surface treatment, for example, the same means as in the removing step can be mentioned. In this invention, when performing the said surface treatment, it can also carry out simultaneously with the said removal process.

  In the first method according to the present invention, the surface of the formed elastic member 3 can be mirror-finished.

  In this way, the holding jig 1 can be manufactured using the molding die 10.

  According to the first method of the present invention, in order to improve the productivity of the holding jig, the reinforcing member 2 is formed with a large number of support holes 7 or the reinforcing member 2 itself is enlarged to increase the reinforcing member. Even if the strength of 2 itself, particularly the strength in the vicinity of the center thereof, is lowered, it is possible to release the integrally molded body while pushing the pushing member 41, so that the reinforcing member 2 is substantially curved and deformed. The integral molded body can be removed from the molding die 10 without any problem. Further, according to the first method of the present invention, the portion pressed by the pushing member 41 is the thick portion that is finally removed, so that the pushing member 41 is pushed when the mold is removed from the molding die 10. Even if the thick part is damaged due to the progress, the elastic member 3 formed by removing the thick part does not have a surface defect due to the damage of the thick part. Therefore, according to the present invention, it is possible to manufacture a holding jig that maintains the flatness of the reinforcing member 2 even though a large number of small parts can be held. And since this holding jig maintains the flatness of the reinforcing member 2, it is possible to manufacture an electronic component of uniform quality with high productivity.

  On the other hand, in a conventional manufacturing method using a molding die that does not include the first depressed portion 35 and the pushing member 41, particularly a molding die having a molding pin only in the middle die, for example, in the manufacturing method of Patent Document 2, Friction stress or the like when the forming pin is pulled out is not absorbed, and as shown in FIG. 8, the integrally formed body is curved or deformed, and the flatness of the holding jig is lowered.

  The manufacturing method of the holding jig according to the present invention is not limited to the above-described embodiment, and various modifications can be made within a range in which the object of the present invention can be achieved. For example, if desired, the integral molded body or the elastic member may be subjected to secondary heating or heat treatment in order to ensure hardening of the base portion or the elastic member of the integrally molded body.

  In the first method according to the present invention, the second mold releasing step is performed before the first mold releasing step. In this invention, the second mold releasing step is performed after the first mold releasing step. May be.

  The molding die used in the manufacturing method of the holding jig according to the present invention is not limited to the above-described example, and various modifications can be made as long as the object of the present invention can be achieved.

  For example, the molding die 10 includes a first mold 21 having a first recess 33 and a second mold 22 having a second recess 34, and the storage recess 31 includes the first recess 33 and the second recess 34. However, in the present invention, the molding die is not limited to such a configuration. For example, as shown in FIG. 5, a molding die used in the method for manufacturing a holding jig according to the present invention includes a third die 23 having a storage recess 32 and a flat plate-like fourth die 24. And the fourth mold 24 may be a molding mold 11 that functions as a lid of the third mold 23. Also, as shown in FIG. 6, a plate-like shape having a second depression 36 is provided. Examples thereof include a molding die 12 that includes a fifth die 25 and a flat plate-like sixth die 26 and sandwiches the reinforcing member 2 between the fifth die 25 and the sixth die 26. The molding die 11 and the molding die 12 are basically the same as the molding die 10 except that the manner in which the reinforcing member 2 is placed is different. Therefore, the method of manufacturing the holding jig according to the present invention using the molding die 11 or the molding die 12 uses the molding die 10 and the holding jig according to the present invention except that the arrangement step is different. This is basically the same as the method of manufacturing. When the holding jig according to the present invention is manufactured using the molding die 11, the reinforcing member 2 is arranged so that the molding pin penetrates the support hole inside the storage recess 32 of the third die. The placement step can be carried out by storing, and when the holding jig according to the present invention is manufactured using the molding die 12, it is between the fifth die 25 and the sixth die 26. The placing step can be performed by inserting or inserting the reinforcing member so that the forming pin penetrates the support hole. FIG. 5 is a schematic cross-sectional view of the state in which the reinforcing member 2 is housed in the molding die 11 taken along the vertical plane, and FIG. 6 shows the state in which the reinforcing member 2 is inserted or inserted into the molding die 12. It is a schematic sectional drawing when cut | disconnecting by a vertical surface, In FIG.5 and FIG.6, the same member as FIG. 4 is shown with the same code | symbol.

  In the molding die 10, the second die 22 does not have the depressed portion and the pushing member, but in the present invention, the second die may have the depressed portion and the pushing member. The axial length of the second forming pin formed in the depressed portion may be at least approximately the same length as the axial length reaching the bottom surface of the first recess. As described above, when the second mold has the depressed portion and the pushing member, the integrally molded body can be pushed by the pushing member even in the second mold releasing step. The deformation of the reinforcing member in the mold release process can be further suppressed.

  In the molding die 10, in order to highly prevent the reinforcing member 2 from being bent and deformed when the integrally molded body is removed from the first die 21, the molding pins are the first die 21 and the second die 22. In this invention, the molding pin only needs to be erected on one of the first mold and the second mold.

  In the molding die 10, the same number of molding pins are erected on the first die 21 and the second die 22, but in the present invention, the molding pin is erected on the first die and the second die. When the standing ratio with the formed molding pin is adjusted to 6 to 7: 3 to 4, when the second mold 22 is removed from the integrally molded body and when the integrally molded body is removed from the first mold 21 Moreover, it is preferable in that the bending and deformation of the reinforcing member 2 can be highly prevented. The arrangement of the molding pins erected on the first mold and the molding pins erected on the second mold is not particularly limited. For example, the molding pins arranged along each arrangement direction of the molding pins are alternately arranged first. One mold and a second mold can be provided, and a plurality of molding pins can be provided as one block, and a plurality of blocks can be provided in the first mold and the second mold in an appropriate number of blocks. .

  In the molding die 10, the second molding pin 43 erected on the second die 22 and extending into the first depression 35 has an axial length that can reach the bottom surface 38 of the first depression 35. However, in the present invention, the second molding pin that is erected on the second mold and extends into the first recessed portion 35 is at least approximately the same length as the axial length reaching the bottom surface of the first recess, that is, The length of the elastic member may be approximately the same as the thickness of the elastic member. When the second molding pin has such a length, the second mold 22 can be easily separated, and even if the thick portion is pushed by the pushing member, it is not greatly deformed, and can be quickly The central part can be pulled away from the first mold 21.

  In the molding die 10, both the first molding pin 42 and the second molding pin 43 are formed so as to extend to one of the facing inner surfaces of the storage recess 31. The forming pin and the second forming pin are erected in the same arrangement and may be formed so that the front end surfaces thereof are in contact with each other in the storage recess and extend from one of the inner surfaces facing the storage recess to the other. Good.

  In the molding die 10, as shown in FIG. 4, the first die 21 is recessed in the first recess 33 that forms the storage recess 31 and the substantially central portion of the first recess 33. A first recessed portion 35 that is recessed with respect to the mold 22, a passage 44 that penetrates in the thickness direction of the first mold 21, and a housing 44 that is disposed in the passage 44 and that is disposed from the bottom surface 38 of the first recessed portion 35. Although a plurality of pushing members 41 provided so as to protrude toward the recess 31 are provided, in the present invention, a seventh mold 27 can be used instead of the first mold 21. As shown in FIG. 7, the seventh mold 27 includes a first recess 33 that forms the storage recess 31, a passage 44 that penetrates in the thickness direction of the seventh mold 27, and the passage 44. A plurality of pushing members 46 disposed so as to protrude from the bottom surface of the first recess 33 toward the storage recess 31, and the pushing member 46 is moved backward from the bottom surface to form a third depression. The portion 37 can be configured to be formed. That is, a part of the passage 44 in the seventh mold 27 can be configured to correspond to the depressed portion according to the present invention. The seventh mold 27 is basically the same as the first mold 21 except that the shape of the depressed portion is different. Therefore, the method for manufacturing the holding jig according to the present invention using the molding die 13 having the seventh die 27 and, for example, the second die 22, as shown in FIG. The method is basically the same as the method of manufacturing the holding jig according to the present invention using the molding die 10 except that the arrangement state is different. That is, when the holding jig according to the present invention is manufactured using the molding die 13, as shown in FIG. A method in which a space is formed in a portion of the passage 44 connected to the first recess 33 in a state of being retracted from the bottom surface, and each of the above-described steps is performed using this space as a depressed portion according to the present invention. It is. 57 is a schematic cross-sectional view of the state in which the reinforcing member 2 is housed in the molding die 13 taken along the vertical plane. In FIG. 7, the same members as those in FIG. 4 are denoted by the same reference numerals.

DESCRIPTION OF SYMBOLS 1 Holding jig 2 Reinforcing member 3 Elastic member 5 Flat part 6 Gutter part 7 Support hole 9 Holding holes 10, 11, 12, 13 Molding die 21 First die 22 Second die 23 Third die 24 Fourth Mold 25 Fifth mold 26 Sixth mold 27 Seventh mold 31, 32 Storage recess 33 First recess 34 Second recess 35 First recess 36 Second recess 37 Third recess 38 Bottom 41, 46 Pushing member 42 First molding pin 43 Second molding pin 44 Passage 45 Base

Claims (7)

A reinforcing member formed with a support hole and an elastic member formed with a holding hole for elastically holding a small part inserted therein, and the reinforcing hole passes through the inside of the support hole. A manufacturing method for manufacturing a holding jig in which a member is embedded in the elastic member using a molding die,
An integrally molded body of the reinforcing member and the elastic material is formed by pressing the thick portion formed thicker than the elastic member by the depression formed in the molding die with the pushing member. And then removing the thick portion of the integrally formed body. A reinforcing member formed with a support hole and an elastic member formed with a holding hole for elastically holding a small part inserted therein, and the reinforcing hole passes through the inside of the support hole. A manufacturing method for manufacturing a holding jig in which a member is embedded in the elastic member using a molding die,
The molding die includes a first die and a second die, and at least one of the first die and the second die is depressed with respect to the other die, and the depression A pushing member provided so as to be able to protrude from the portion toward the other mold, and a number of molding pins erected toward the other mold,
An arrangement step of arranging the reinforcing member so that the molding pin penetrates the support hole, in or between the first mold and the second mold;
A molding step of heating the elastic material filled in the cavity in the molding die to mold an integral molded body having a thick part; and
A mold releasing step of releasing the thick part of the integrally molded body obtained in the molding step from the molding die while pushing the thick portion with the pushing member;
And a removing step of removing the thick portion of the integrally molded body removed from the molding die.   The first mold includes a depressed portion that is depressed with respect to the second mold, a pushing member that can project from the depressed portion toward the second mold, and the second mold. The manufacturing method of the holding jig according to claim 2, comprising a large number of molding pins erected toward the front.   The said 1st metal mold | die has the 1st recessed part in which the said recessed part is formed, and forms the storage recessed part in which the said reinforcement member is accommodated, The manufacture of the holding jig of Claim 3 characterized by the above-mentioned. Method.   The said 2nd metal mold | die has the 2nd recessed part which forms the said storage recessed part with the said 1st recessed part, The manufacturing method of the holding jig of Claim 4 characterized by the above-mentioned.   The said 2nd metal mold | die has the said shaping | molding pin erected toward the said 1st metal mold | die, The manufacturing of the holding jig of any one of Claims 3-5 characterized by the above-mentioned. Method.   The second mold includes a depressed portion that is depressed with respect to the first mold, and a pushing member that is provided so as to protrude from the depressed portion toward the first mold. The manufacturing method of the holding jig of any one of Claims 3-6 characterized by the above-mentioned.

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