JP2011189648A - Method of producing holder and molding mold - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of producing holder capable of releasing a reinforcing member from a molding mold without deforming the reinforcing member, and producing a holder while keeping the planarity of the reinforcing member, and to provide a molding mold capable of easily releasing the reinforcing member without deforming the reinforcing member. <P>SOLUTION: The method of producing holder in which the holder 1 provided with the reinforcing member 5 having support holes 11 and an elastic member 6 having holding holes 15 is produced by performing integral molding by using the molding mold 30 provided with a plurality of molding pins 33 disposed vertically includes a releasing process of releasing an integrally molded body from the molding mold 30 by successively drawing the molding pins 33 in the same direction in n steps (n is an integer of 2 or more). The molding mold 30 for molding the holder 1 comprises a first mold 31 and a second mold 32 which form an arrangement space 35 of the reinforcing member 5, wherein the first mold 31 is provided with the molding pins 33 vertically disposed in the arrangement space 35 and has n pieces of split molds 41, 51 (n is an integer of 2 or more). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a holding jig and a molding die, and more particularly, to manufacture a holding jig in which the reinforcing member is released from the molding die without deforming the reinforcing member and the flatness of the reinforcing member is maintained. The present invention relates to a manufacturing method of a holding jig that can be used, and a molding die that can be easily released without deforming a reinforcing member.

  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 using, for example, a molding die in which molding pins for forming the holding holes are erected. Specifically, Patent Document 2 states that “a method of manufacturing a chip component holding plate for elastically holding a plurality of chip components, in which an elastic material poured into a hard substrate is cured. Then, a method of manufacturing a chip component holding plate, comprising the step of removing the pins. ”(Claim 1). In this manufacturing method, “the pin 27 is erected on the upper mold 25, and the elastic material 15 is in close contact with the pin and is difficult to release. 25, and the pin 27 is pulled out from the elastic member 15. "(Refer to the second page, upper right column, line 11 to the lower left column, line 11 and FIG. 4). When the holding plate, in which the hard substrate 11 and the elastic material 15 are integrally formed in this way, is released from the molding die, the pulling force of the pin 27 due to the adhesion force, frictional force, etc. between the elastic material 15 and the pin 27. As a result, the hard substrate 11, particularly in the vicinity of the central portion thereof, is deformed, and the deformation may not be restored after being released from the mold.

  As a mold for preventing the deformation of the hard substrate 11 and manufacturing a flat holding plate, Patent Document 3 states that “the core material has rigidity such as metal and the chip component is elastic in the thickness direction in advance. An external electrode formed by inserting a plate with holes slightly larger than the diameter of the holes that can be held, and molding silicone rubber so as to have a number of holes that can elastically hold electronic components in the thickness direction. A mold structure of an electronic component holding plate for coating, wherein a large number of pins provided in the mold for hole formation are embedded in a fixed mold and a movable mold. A holding plate molding die used for external electrode application "is described. When a holding plate is manufactured using this holding plate molding die, the effect of preventing deformation of the core material can be expected when the molded holding plate is released from the holding plate molding die.

  By the way, in recent years, electronic parts have been further reduced in size, so that the deformation of the hard substrate at the time of releasing from the molding die can be further prevented and the mold can be easily released from the molding die. It is desired.

Japanese Examined Patent Publication No. 62-20585 Japanese Patent Laid-Open No. 2-14508 JP 2004-114624 A

  It is an object of the present invention to provide a manufacturing method of a holding jig that can manufacture a holding jig that is released from a molding die and maintains the flatness of the reinforcing member without deforming the reinforcing member. To do.

  An object of the present invention is to provide a molding die that can be easily released without deforming a reinforcing member.

As a first means for solving the above problems,
According to a first aspect of the present invention, the reinforcing member includes a reinforcing member formed with a support hole and an elastic member formed with a holding hole that elastically holds a small component, and the reinforcing hole passes through the inside of the support hole. A manufacturing method in which a holding jig in which a member is embedded in the elastic member is integrally formed with a molding die in which a plurality of molding pins for forming the holding hole are erected, and a plurality of the moldings are produced. It has a mold release process in which the pins are sequentially pulled out in n stages (n is an integer of 2 or more) in the same direction to release the integrally molded body molded in the molding die from the molding die. A holding jig manufacturing method,
According to a second aspect of the present invention, in the mold release step, the first group is changed to the (n-1) th group (n is an integer of 2 or more) in a state in which the contact state between the integrally molded body and the molding die is maintained. The contact mold releasing step of sequentially removing the classified forming pins in the same direction in the (n-1) stage, and then following the contact release step, releasing or releasing the contact state, the nth group 2. The method of manufacturing a holding jig according to claim 1, further comprising: a non-contact mold release step of removing the molding pins classified into the same direction as the contact mold release step.
A third aspect of the present invention is the method of manufacturing a holding jig according to the first or second aspect, wherein the n is 2.

As a second means for solving the above problems,
According to a fourth aspect of the present invention, the reinforcing member includes a reinforcing member formed with a support hole and an elastic member formed with a holding hole for elastically holding the small component, and the reinforcing hole passes through the inside of the support hole. A molding die for molding a holding jig in which a member is embedded in the elastic member, wherein the molding die is overlapped with each other to form an arrangement space in which the reinforcing member is disposed, and a first mold The first mold has n pieces (n is equal to or more than 2), each of which is formed with standing forming pins that form the holding holes so as to stand vertically in the arrangement space. An integer) split mold,
According to a fifth aspect of the present invention, n (n is an integer of 2 or more) of the divided molds form the arrangement space in cooperation with the second mold and have an arrangement similar to the arrangement of the support holes. A second split mold having a second forming pin and a through-hole standing or drilled in the hole, and a second split mold disposed on the opposite side of the placement space with respect to the second split mold, and penetrating through the through-hole and The molding die according to claim 4, characterized by comprising a first split mold having a first molding pin vertically standing in the space,
6. The invention according to claim 4 or 5, wherein each of the n divided types (n is an integer of 2 or more) includes a link member that regulates a relative movement amount thereof. A mold,
7. The molding tool according to claim 7, wherein the molding tool is a molding tool used in the method for manufacturing a holding jig according to any one of claims 1 to 3. Or a molding die according to item 1.

  In the manufacturing method of the holding jig according to the present invention, the plurality of molding pins are sequentially extracted in n stages in the same direction, so that the removal force of the molding pins can be dispersed in n stages. In the molding die according to the present invention, the first die has n divided molds (n is an integer of 2 or more). When the divided molds are sequentially opened, a plurality of molding pins are provided. It is possible to sequentially withdraw in n stages. As a result, the manufacturing method of the holding jig according to the present invention and the molding die according to the present invention can easily release the integrally molded body without deforming or damaging the reinforcing member. Therefore, according to the present invention, there is provided a method for manufacturing a holding jig capable of manufacturing a holding jig that is released from a molding die and maintains the flatness of the reinforcing member without deforming the reinforcing member. Further, it is possible to provide a molding die that can be easily released without deforming the reinforcing member.

FIG. 1 is a schematic top view showing an example of a holding jig manufactured by the method for manufacturing 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 in an example of a holding jig manufactured by the method for manufacturing a holding jig according to the present invention. FIG. 4 is a schematic top view showing another example of a holding jig manufactured by the method for manufacturing a holding jig according to the present invention. FIG. 5 is a schematic explanatory view for explaining an example of a method for manufacturing a holding jig according to the present invention. FIG. 5 (a) shows an example of a method for manufacturing a holding jig according to the present invention. It is explanatory drawing explaining the state which has arrange | positioned the reinforcement member to the shaping die which is an example of a metal mold | die, FIG.5 (b) is an example of the manufacturing method of the holding jig which concerns on this invention. FIG. 5C is an explanatory diagram for explaining a state in which the first split mold in the molding die which is an example of the mold is opened, and FIG. 5C is an example of the method for manufacturing the holding jig according to the present invention, and the molding according to the present invention. It is explanatory drawing explaining the state in the middle of opening the 2nd division mold in the shaping die which is an example of a metal mold | die.

  The holding jig manufactured by the manufacturing method according to the present invention (hereinafter sometimes referred to as the holding jig according to the present invention) elastically holds the reinforcing member and the small parts in which the support holes are formed. An elastic member having a holding hole, and the reinforcing member is embedded in the elastic member so that the holding hole passes through 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.

  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 the small component from the 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, a diameter in a plane perpendicular to the axis with an axis length of 1.0 to 3.2 mm or a diameter of a virtual circumscribed circle circumscribing a cross-sectional shape perpendicular to the axis. It has a dimension of 3 mm. Since the holding jig according to the present invention can hold small parts independently as will be described later, in this invention, the small size is further reduced from the above-mentioned dimensions in which the dimensional error of the small parts greatly affects the uniformity of the holding state. Parts can also be used.

  The holding jig according to the present invention is suitable for holding the small component, for example, more preferably 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 flat portion 12 (not shown in FIG. 1) having a support hole 11 and a flange portion 13 formed around the flat portion 12. A reinforcing member 5 and an elastic member 6 having a holding hole 15, and the flat portion 12 is embedded in the elastic member 6 so that each of the holding holes 15 passes through each of the support holes 11. .

  As shown well in FIG. 2, the reinforcing member 5 includes the elastic member 6 so that the flat portion 12 in which the support hole 11 is formed is embedded in at least the elastic member 6 described later, and the elastic member 6 becomes flat. Support reinforcement. As shown in FIGS. 2 and 3, the reinforcing member 5 includes a rectangular flat portion 12 in which a large number of support holes 11 are formed, and a thickness direction, that is, an upper surface of the flat portion 12 around the flat portion 12. And a flange 13 protruding in the direction and the bottom surface direction.

  The flange portion 13 is formed so as to surround the flat portion 12, and as shown in FIG. 2, the protrusion amount in the upper surface direction and the lower surface direction of the flat portion 12 is adjusted to be constant. In other words, as shown clearly in FIG. 3, the flange portion 13 forms a rectangular frame surrounding the flat portion 12, and the flat portion 12 is thinner than the flange portion 13 at a substantially central portion in the thickness direction. It is connected. The flange portion 13 can also be referred to as a flange portion, reinforces the strength of the flat portion 12, and ensures excellent handleability when the holding jig 1 is used. The thickness of the flange 13 is set within a range of 8.9 to 10.0 mm, for example.

  As shown in FIGS. 2 and 3, the flat portion 12 is a region in which a large number of support holes 11 penetrating in the thickness direction are formed over the entire region. Usually, the flat portion 12 has a constant thickness and is flat. It has become. The thickness of the flat portion 12 is preferably in the range of 5.9 to 7 mm, for example.

  The support holes 11 formed in the flat portion 12 include a large number of the support holes 11 in the flat portion 12, for example, 5000 or more, preferably at least 6000, more preferably at least 7000, particularly preferably at least. There are 7500 (in FIG. 3, a part of the support hole 11 is not shown). When a large number of support holes 11 are formed in the reinforcing member 5, productivity in a method for manufacturing a small component using the holding jig 1 is improved. As shown in FIG. 3, the support holes 11 are arranged in a so-called “staggered” manner. Specifically, in this example, the support holes 11 include the first support holes 11A arranged in odd rows along the first arrangement direction which is the short side direction of the reinforcing member 5 illustrated in FIG. The second support holes 11B are arranged in rows. More specifically, the support holes 11 are arranged along the first arrangement direction and the second arrangement direction intersecting the first arrangement direction, in this example, the long side direction of the reinforcing member 5 shown in FIG. The first support holes 11A, the two first support holes 11A adjacent along the first arrangement direction, and the two first support holes adjacent to the two support holes on the same side in the second arrangement direction The region surrounded by the hole 11A is preferably composed of a second support hole 11B arranged at the center thereof. The first support holes 11A are arranged in the outermost row in the first arrangement direction, and the second support holes 11B are arranged in the outermost row in the second arrangement direction. In such a so-called “staggered” arrangement, the first holding holes 15 </ b> A located diagonally and the second support holes 11 </ b> B arranged between them have their axes on the same straight line. The angle between the first arrangement direction and the second arrangement direction is about 45 °. When the support holes 11 are arranged in a so-called “staggered” manner as described above, the so-called “staggered” arrangement as described above may be, for example, a grid-like arrangement shown in FIG. Since the support holes 11 can be formed in a larger number, that is, at a high density, the productivity of the holding jig 1 can be greatly improved. Accordingly, in order to hold a larger number of small parts, the support holes 11 are preferably arranged in a so-called “staggered” manner. The support holes 11 are arranged at a constant interval in both the first arrangement direction and the second arrangement direction, for example, such that the axial distance between the support holes 11 is in the range of 1.8 to 5.5 mm. The cross-sectional shape of the support hole 11 in a plane parallel to the flat portion 12 is not particularly limited, and for example, a circular shape, an elliptical shape, a rectangular shape, a polygonal shape, or the like can be arbitrarily selected. The cross-sectional shapes are preferably the same shape. In this example, the cross-sectional shape of the support hole 11 is a circle having substantially the same diameter. The diameter is set, for example, within a range of 1.3 to 2.2 mm.

  The reinforcing member 5 including the flat portion 12 and the flange portion 13 is formed in consideration of the productivity of small parts, the number of support holes 11 formed, the dimensions of the small parts, the strength of the holding jig 1, and the like. The dimension of the flat part 12 is adjusted. The reinforcing member 5 only needs to be formed of a material that can maintain the elastic member 6 in a flat shape, and examples of such a material include metals and resins. Specific examples of the metal include stainless steel, carbon steel, aluminum, aluminum alloy, and nickel alloy. Examples of the resin include polyester, polytetrafluoroethylene, polyimide, polyphenylene sulfide, polyamide, polycarbonate, polystyrene, and polypropylene. , Polyethylene and polyvinyl chloride. The reinforcing member 5 is preferably formed of workability, stainless steel, aluminum or an aluminum alloy, polyphenylene sulfide resin, or the like, and particularly preferably formed of aluminum or an aluminum alloy.

  As shown in FIGS. 1 and 2, the elastic member 6 has a plurality of holding holes 15, and has a gap that can accommodate the flat portion 12 therein. As shown in FIG. 2, the elastic member 6 embeds the flat portion 12 of the reinforcing member 5. In other words, the elastic member 6 covers both surfaces of the flat portion 12 and penetrates into the support holes 11 of the reinforcing member 5 to reinforce. It is formed so as to be flush with the flange 13 of the member 5. That is, the elastic member 6 is disposed on the surface of the flat portion 12 and is surrounded by the flange portion 13 of the reinforcing member 5. Here, the elastic member 6 has a flat portion 12 embedded so that the holding hole 15 passes through the inside of the support hole 11. Preferably, as shown in FIG. 2, the elastic member 6 embeds the flat portion 12 so that the holding hole 15 has an axis C common to the axis C of the support hole 11. When the elastic member 6 is formed in this manner, the adhesiveness between the elastic member 6 and the reinforcing member 5 is excellent, and insertion and extraction of small parts is facilitated.

  As shown in FIGS. 1 and 2, the elastic member 6 has a number of holding holes 15 penetrating in its thickness direction and elastically holding small parts inserted or penetrated therein by its elastic force. Have. The elastic member 6 basically has the same number of holding holes 15 as the support holes 11. The plurality of holding holes 15 are arranged in a so-called “staggered” manner along the first arrangement direction and the second arrangement direction basically in the same manner as the support holes 11. Specifically, the holding holes 15 include first holding holes 15A arranged in odd rows and second holding holes 15B arranged in even rows along the first arrangement direction. The first holding holes 15A are arranged in the outermost row in the first arrangement direction, and the second holding holes 15B are arranged in the outermost row in the second arrangement direction. The holding holes 15 are arranged at regular intervals in both the first arrangement direction and the second arrangement direction, basically at the same intervals as the support holes 11. The cross-sectional shape of the holding hole 15 in a plane parallel to the flat portion 12 is not particularly limited, and for example, a circular shape, an elliptical shape, a rectangular shape, a polygonal shape, or the like can be arbitrarily selected. The cross-sectional shapes are preferably the same shape. In this example, the cross-sectional shape of the holding hole 15 is a circle having substantially the same diameter. The diameter is adjusted so that the opening diameter is smaller than that of the support hole 11 in consideration of the size of a small component to be held. For example, the diameter of the holding hole 15 is set in a range of 80 to 90%, specifically in a range of 0.42 to 0.58 mm with respect to the diameter of the small component or the diameter of the virtual circumscribed circle. Is done.

  The elastic member 6 is adjusted in size and thickness so as to be flush with the flange 13 in consideration of the productivity of small parts, the size of the small parts, the elastic force exerted, and the like. The elastic member 6 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. Among silicone rubbers, a silicone rubber obtained by crosslinking a linear polydimethylsiloxane having a high polymerization degree or a copolymer thereof to impart rubber elasticity, or an acid-resistant silicone rubber is preferable. As silicone rubber which bridge | crosslinked linear polydimethylsiloxane of high polymerization degree, a brand name "KE-1950-50" (made by Shin-Etsu Chemical Co., Ltd.) etc. can be obtained, for example.

  A holding jig 2 which is another embodiment of the holding jig according to the present invention will be described with reference to the drawings. As shown in FIG. 4, the holding jig 2 is basically the same as the holding jig 1 except that the arrangement of the holding holes 15, that is, the support holes 11 is different. As shown in FIG. 4, the holding holes 15 are arranged in a grid pattern along the first arrangement direction and the second arrangement direction.

  For example, the holding jigs 1 and 2 are inserted into the holding hole 15 so that the axis of the small part is substantially parallel to the axis of the holding hole 15, and preferably coincides with the axis of the holding hole 15. Hold it spontaneously. And the holding jigs 1 and 2 holding the small parts are used for the manufacturing process, the conveying process, etc. of the small parts. In order to hold the small parts on the holding jigs 1 and 2, for example, an alignment plate in which the same number of through holes as the holding holes 15 are similarly arranged at the same intervals as the holding holes 15 is prepared. Are aligned on the holding jig 1 so that. Next, a small component is inserted into each of the through holes of the alignment plate, and the small component is uniformly pressed to the holding jig side with a flat plate-shaped member. Then, the small component is inserted into the holding hole 15 so as to be in the above state, and is held elastically. As an example of such a method, for example, in Japanese Patent No. 4337498, various conventional methods (for example, see columns 0004 to 0009 and FIGS. 9 to 14) and methods obtained by improving these various methods (claims) Range, and FIG. 1 and FIG. 2 etc.).

  Since the holding jigs 1 and 2 are manufactured by the method for manufacturing the holding jig according to the present invention, the reinforcing member 5, particularly the flat part 12 thereof, is substantially deformed when removed from the molding die. The flatness of the reinforcing member 5, particularly the flat portion 12, is maintained. Since the holding jigs 1 and 2 are flat, a large number of small parts can be held in a uniform state. Therefore, according to the holding jig manufactured by the method for manufacturing a holding jig according to the present invention, a large number of small parts having high dimensional accuracy can be manufactured with high productivity.

  The manufacturing method of a holding jig according to the present invention is a manufacturing method in which a holding jig, for example, the holding jigs 1 and 2 are integrally formed with a molding die in which a plurality of molding pins forming a holding hole are erected. In this method, a plurality of the molding pins are sequentially removed in n stages (n is an integer of 2 or more) in the same direction, and the integrally molded body molded in the molding die is released from the molding die. It has the mold release process to perform. That is, the manufacturing method of the holding jig according to the present invention classifies a plurality of molding pins erected on the molding die into n (an integer of 2 or more) groups, and the molding pins classified into each group are the same. By sequentially removing in the direction, in other words, by removing the forming pins in the same direction in multiple stages, the integrally formed body of the reinforcing member and the elastic member formed in the molding die is molded This is a method of releasing from the mold.

  Here, when removing the molding pin, the molding pins classified into the (n-1) th group (n is an integer of 2 or more) from the first group among the molding pins classified into the n group, In the state in which the contact state of the molding pin in the removal direction of the integrally molded body and the molding die is maintained, that is, in the state where deformation of the integrally molded body is restricted, the integral molded body is sequentially withdrawn in the (n-1) stage. Then, among the molding pins classified into the n group, the molding pins classified into the nth group are removed while releasing the contact state or after releasing the contact state. It is preferable in that it can be achieved. That is, in the manufacturing method of the holding jig according to the present invention, the mold releasing step is performed in the state where the contact state between the integrally molded body and the molding die is maintained from the first group to the (n-1) th group (n is A contact release process in which the forming pins classified as an integer of 2 or more are sequentially pulled out in the same direction in the (n-1) stage, and the contact state is released or released after the contact release process. It is preferable to have a non-contact mold release step for removing the forming pins classified into the nth group in the same direction as the contact mold release step.

  In the manufacturing method of the holding jig according to the present invention, the n is not particularly limited as long as it is an integer of 2 or more, but if it is too large, the manufacturing efficiency may be lowered. For example, 2 to 5 is preferable, 2 or 3 is more preferable, and 2 is particularly preferable.

  As an example of the manufacturing method of the holding jig according to the present invention, the manufacturing method of manufacturing the holding jig 1 by removing the forming pin in two stages where the n is 2 (hereinafter referred to as one manufacturing method according to the present invention) Will be described with reference to the drawings. That is, in one manufacturing method according to the present invention, the contact separation is performed in such a manner that the molding pins classified in the first group are sequentially pulled out in the same direction in one step while maintaining the contact state between the integrally molded body and the molding die. A mold release step and a non-contact release step for removing the forming pins classified in the second group in the same direction as the contact release step while releasing the contact state after the contact release step Perform the process.

  In one manufacturing method according to the present invention, first, an elastic material for forming the molding die 30, the reinforcing member 5, and the elastic member 6 is prepared. FIG. 5 is a schematic explanatory view for explaining an example of the manufacturing method of the holding jig according to the present invention. FIG. 5 (a) shows a state in which the reinforcing member 5 is arranged in the molding die 30 cut along its vertical surface. It is a schematic sectional drawing at the time.

  As shown in FIG. 5, the prepared molding die 30 includes a first die 31 and a second die 32 that overlap each other and form an arrangement space 35 in which the reinforcing member 5 is placed. Thus, the arrangement space 35 in which the reinforcing member 5 is arranged when the first mold 31 and the second mold 32 are superposed directly or via the reinforcing member 5 in a contact state or a separated state is formed. . In the molding die 30, the inner surfaces 54 and 32 a facing each other of the first die 31 and the second die 32 are flat so that the reinforcing member 5 is sandwiched between the first die 31 and the second die 32. It has become. Therefore, the arrangement space 35 in the molding die 30 can also be referred to as a clamping space. In this example, the first mold 31 is movable so as to move forward and backward with respect to the second mold 32 and can be referred to as a movable mold. The second mold 32 is a substrate of a molding machine (not shown) or the like. It can be called a fixed mold.

  As shown in FIG. 5, the second mold 32 is a flat plate-shaped mold on which the reinforcing member 5 is placed and clamped together with the first mold 31. In the second mold 32, the inner surface 32 a on which the reinforcing member 5 is placed has a rectangular shape having substantially the same dimensions as the reinforcing member 5.

  The first mold 31 has a rectangular shape that is substantially the same size as the reinforcing member 5 in the same manner as the second mold 32. Specifically, as shown in FIG. It consists of two divided types, ie, a first divided type 41 and a second divided type 51, which are stacked. Each of the split dies 41 and 51 is a surface where the molding pin 33 extending up to the inner surface 32a of the second mold 32 and standing upright in the arrangement space 35 faces the arrangement space 35, that is, the inner surface 54 and the surface. 43 is erected. The molding pins 33 are arranged in the same manner as the support holes 11 so as to penetrate the support holes 11 when the reinforcing member 5 is arranged in the arrangement space 35, and the holding holes 15 are formed in the elastic member 6. Therefore, the forming pin 33 is formed in a rod body having a cross-sectional shape substantially similar to that of the holding hole 15.

  More specifically, the first mold 31 includes a second divided mold 51 that forms an arrangement space 35 together with the second mold 32, and a side opposite to the arrangement space 35 with respect to the second divided mold 51. And a first divided mold 41 disposed in contact with the first divided mold 41.

  The second split mold 51 is superimposed on the second mold 32 via the reinforcing member 5 to form the arrangement space 35. Therefore, the second split mold 51 includes a second molding pin 52 erected on the inner surface 54 that is the upper surface of the arrangement space 35 and a through-hole 53 that is perforated so as to penetrate in its own thickness direction. Have. The second molding pins 52 and the through holes 53 as a whole have the same arrangement as the arrangement of the support holes 11 and the same number as the number of the support holes 11 drilled in the reinforcing member 5. Standing up or drilled. A plurality of the second molding pins 52 are erected at a height substantially the same as the height of the arrangement space 35, that is, the thickness of the flange portion 13 of the reinforcing member 5. The through hole 53 has an inner diameter that is substantially the same as the outer diameter of the first molding pin 42 described later, and guides the forward and backward movement of the first molding pin 42. Therefore, it is possible to prevent deformation when the first molding pin 42 is removed. The arrangement in which the second molding pins 52 are erected and the arrangement in which the through holes 53 are drilled may be the same arrangement as that of the support holes 11 as a whole, and each arrangement is not particularly limited. For example, the second molding pins 52 and the through holes 53 may be alternately provided along the arrangement direction, and the through holes 53 are provided at locations corresponding to the support holes 11 arranged in the vicinity of the outer edge of the flat portion 12. The second molding pin 52 may be provided at a position corresponding to the support hole 11 arranged in the vicinity of the center, or vice versa. The number of standing up of the second forming pins 52 and the number of drilled holes of the through holes 53 may be the same as the number of drilled holes of the support holes 11 as a whole, and the number of standing and drilled holes is not particularly limited. For example, the ratio of the standing number of the second molding pin 52 and the number of perforations of the through hole 53 (the number of standing holes: the number of perforations) can be set in a range of 1: 9 to 9: 1. In order to release from the molding die 30 efficiently, the ratio (the number of erections: the number of perforations) is preferably 7: 3.

  The first split mold 41 is arranged so as to sandwich the second split mold 51 together with the second mold 32, and has a first molding pin 42 erected on a surface 43 facing the arrangement space 35 side. Yes. The first molding pins 42 are erected so as to have the same arrangement as that of the through holes 53 and the same number as that of the through holes 53. That is, the entirety of the first molding pin 42 and the second molding pin 52 becomes the molding pin 33, and the number of the support holes 11 is the same as that of the support holes 11. Therefore, the ratio of the number of standing first molding pins 42 to the number of second molding pins 52 (the number of first molding pins standing: the number of second molding pins standing) is 1: 9 to 9: 1. The ratio (the number of first molding pins standing up: the number of second molding pins standing up) is 3: 7 in order to release the integrally molded body from the molding die 30 efficiently. Is preferred. The first molding pin 42 has an axial length that passes through the second split mold 51 and reaches the inner surface 32 a of the first mold 31.

  The first mold 31 is provided with a link member 34 that regulates the relative movement amounts of the first split mold 41 and the second split mold 51. Specifically, the link member 34 is erected at the corner of the second split mold 51, and has a link main body 34a that penetrates the first split mold 41, and a flange that bulges radially at the tip of the link main body 34a. And a locking recess 34c having a diameter larger than that of the link hole at the end of the link hole that penetrates the link main body 34a, that is, on the outer surface side of the first split mold 41. . The link body 34a is a rod-shaped member whose axial length is adjusted so that the locking projection 34b is locked to the locking recess 34c when the first molding pin 42 is removed from the arrangement space 35. It is.

  The first mold 31 and the second mold 32 are basically the same as known molds for forming a holding jig, for example, except as described above.

  The second mold 32 is fixed to a known molding machine (not shown in FIG. 5) used for a transfer molding method, an injection molding method (injection molding method), and the like. The mold 31 is mounted so as to be movable.

  In one manufacturing method according to the present invention, the reinforcing member 5 is prepared. For example, a plate-like body having a flat portion in which the support holes 11 are not formed and a flange portion 13 around the plate portion is desired from the metal or resin plate that is the same as or thicker than the flange portion 13. Cut to dimensions. Or the flat part in which the support hole 11 is not formed, and the collar part 13 are produced separately, and the flat part and the collar part 13 are joined to a desired position by joining means such as welding or adhesion, and the plate A body is produced. If the reinforcing member does not have a flange, a plate-like body corresponding to the flat portion 12 is produced. A large number of support holes 11 having a predetermined shape and diameter are formed in the flat portion of the plate-like body thus manufactured along the first arrangement direction and the second arrangement direction by grinding, cutting, file finishing, or the like. Then, the reinforcing member 5 is manufactured by drilling so as to be aligned at a predetermined interval. Or the flat part 12 and the collar part 13 in which the support hole 11 was formed are produced separately, and the flat part or the flat part 12 and the collar part 13 are joined to a desired position by joining means such as welding or adhesion. Thus, the reinforcing member 5 is produced. Note that an adhesive or a primer may be applied to the surface of the flat portion 12 in order to increase the adhesion with the elastic member 6. In one manufacturing method according to the present invention, an elastic material for forming the elastic member 6 is prepared. Examples of the elastic material include a composition containing the rubber and elastomer.

  In one manufacturing method according to the present invention, as shown in FIG. 5A, the molding pin 33 is inserted into the support hole 11 in the arrangement space 35 formed between the first mold 31 and the second mold 32. An arrangement step is carried out in which the reinforcing member 5 is arranged, that is, placed or clamped so as to pass through. Specifically, the reinforcing member 5 is placed on the inner surface 32a of the second mold 32, and the second split mold 51 is placed thereon so that the second molding pin 52 penetrates the support hole 11. Thus, the reinforcing member 5 is sandwiched between the second mold 32 and the second split mold 51. Further, the first split mold 41 is placed and arranged on the second split mold 51 so that the first molding pin 42 penetrates the through hole 53 and the support hole 11. In this way, the arrangement process is completed. When the arrangement step is completed, as shown in FIG. 5A, the first molding pin 42 and the second molding pin 52 are in a state of penetrating all the inside of the support hole 11, and these molding pins 42 and 52, A cavity corresponding to the elastic member 6 is formed by the second mold 32, the second split mold 51, and the reinforcing member 5. The flat portion 12 of the reinforcing member 5 is hermetically sealed with a flange portion 13.

  Next, in one manufacturing method according to the present invention, as shown in FIG. 5A, the elastic material is heated after filling the cavity formed in the molding die 30 with the elastic material, A molding step of molding an integrally molded body of the reinforcing member 5 and the elastic member 6 is performed. Specifically, 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 30 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 a transfer molding method and an injection molding method (injection molding method) can be employed. The molding temperature, molding time, and the like may be any temperature and time at which the elastic material used is cured and molded, and can be arbitrarily adjusted according to the elastic material. When the molding process is completed in this way, the integral molded body is obtained.

  In the manufacturing method according to the present invention, after the integrally formed body is formed as described above, a mold release step for releasing the integrally formed body from the molding die 30 is performed. In this mold release step, the plurality of molding pins 33 are sequentially removed in n steps (n is an integer of 2 or more) in the same direction, and the integrally molded body molded in the molding die 30 is separated from the molding die 30. This is a mold release process. Thus, the mold release step in one manufacturing method according to the present invention includes forming pins 33 classified into n groups (n is an integer of 2 or more) sequentially in the same direction for each group, for example, for each group. Or, it is characterized by being extracted and carried out independently.

  In one manufacturing method according to the present invention, as described above, in the mold release step, as shown in FIG. 5 (b), the molding pin of the integrally molded body and the molding die 30, particularly the second split mold 51 is used. FIG. 5 (c) shows a contact mold release process in which the first molding pins 42 classified into the first group among the molding pins 33 are removed in one step while maintaining the contact state in the withdrawal direction of 53. As shown, the second molding pin 52 classified into the second group of the molding pins 33 is pulled out in the same direction as the contact release step, while releasing the contact state after the contact release step. And a non-contact release process.

  As shown in FIG. 5 (a), the contact release process includes the inner surface 54 of the second split mold 51 in the molding die 30 and the surface of the elastic member 6 in the integral molded body after the molding process is completed. The first split mold 41 is moved away from the second split mold 51 while maintaining the contact state, that is, while restricting the displacement of the integrally molded body by the second split mold 51. When the first split mold 41 moves in the opposite direction to the second mold 32 in this way, the first molding pin 42 retracts from the arrangement space 35 and is removed from the elastic member 6. Further, when the first split mold 41 moves and reaches a predetermined movement amount, the movement is stopped by the link member 34. This state is shown in FIG. When the first split mold 41 moves in one direction as described above, the elastic member 6 contacts the inner surface 54 of the second split mold 51 even if a frictional force is generated between the first molding pin 42 and the elastic member 6. Therefore, the elastic member 6 and the reinforcing member 5 do not follow the removal of the first molding pin 42, and the first mold 32 and the second divided mold 51 are placed in the placement space 35 in the placement step. The desired state of being held is maintained. Accordingly, the first molding pin 42 can be removed from the integrally molded body without deforming or damaging the reinforcing member 5.

  According to this contact release process, for example, even a thick holding jig having a holding hole 15 having a relatively long axis length, used for processing both ends of a small component having a relatively long axis length. Moreover, even if it is a thin holding jig having a holding hole 15 with a short axis length, which is used for processing a small part having a relatively short axis length, the reinforcing member 5 is deformed or damaged. The first molding pin 42 can be removed from the integrally molded body without any problem. In addition, according to the contact release process, even if the reinforcing member 5 is easily deformed and damaged due to the increase in size and / or porosity of the holding jig in order to realize the recent demand for improvement in productivity, the deformation is also prevented. The first molding pin 42 can be removed from the integrally molded body without causing damage. Therefore, according to the present invention, even a holding jig having a very large number of holding holes, for example, 6000 or more, particularly 10,000 or more, is reinforced by being released from the molding die without deforming the reinforcing member. A manufacturing method capable of manufacturing a holding jig that maintains the flatness of the member, and a reinforcing member in which a very large number of support holes, for example, 6000 or more, especially 10,000 or more, are formed by making the holding jig porous. However, it is possible to provide a molding die that can be easily released without deforming the reinforcing member.

  As shown in FIG. 5B, the non-contact release process is performed independently after the contact release process is completed, that is, after the first molding pin 42 is removed from the arrangement space 35. Preferably it is done. In this non-contact mold release step, the second split mold 51 is released while releasing the state where the inner surface 54 and the surface of the elastic member 6 are in contact with each other, as shown in FIGS. 5 (a) and 5 (b). The first split mold 41 is moved in the same direction as the movement direction, that is, in a direction away from the first mold 32. In the molding die 30, when the second split die 51 is moved in one direction as described above, the contact state is released at the initial stage. The second split mold 51 may be moved independently from the first split mold 41. In this example, as shown in FIG. 5C, the first split mold 41 is moved by the link member 34. Synchronously with the first split mold 41. When the second split mold 51 is moved in this way, the second molding pin 52 is retracted from the arrangement space 35 and pulled out from the elastic member 6 as shown in FIG. At this time, since the reinforcing member 5 of the integrally molded body is fixed to the second mold 32 and a large number of the first molding pins 42 have already been removed, the integrally molded body is the first molding pin 42. The second molding pin 52 can be easily removed from the integrally molded body without largely following the removal of the mold.

  In the manufacturing method according to the present invention, since the elastic member 6 of the integrally formed body formed in this manner may have a molding burr near the opening of the holding hole 15 or the like, a molding burr is formed as necessary. Surface treatment such as grinding may be performed to remove the surface, and the surface of the formed elastic member 6 may be mirror-finished. Examples of such surface treatment include surface grinding, milling, lapping, mirror finishing, and the like.

  In this way, the holding jig 1 can be manufactured. The holding jig 2 can be manufactured in the same manner as in the manufacturing method according to the present invention.

  According to one manufacturing method according to the present invention, the plurality of molding pins 33 can be sequentially pulled out in two steps in the same direction, so that the pulling force of the molding pin 33 can be dispersed in two steps. Further, according to one manufacturing method of the present invention, even when the molding pin 33 is pulled out in the same direction, the integral molded body is in contact with the molding die 30 when the first stage molding pin 42 is pulled out. Therefore, the integrally formed body does not deform following the removal of the forming pin 42. On the other hand, according to the molding die 30, the first die 31 has the two split dies 41 and 51. Therefore, when the split dies 41 and 51 are opened sequentially, a plurality of molding pins 33 are provided. It is possible to sequentially withdraw in two stages. Further, according to the molding die 30, when the first split mold 41 forming the arrangement space 35 is opened and the first molding pin 42 erected on the first split mold 41 is removed, The two-piece mold 51 can fix the integrally molded body in the arrangement space. Thus, according to the manufacturing method and the molding die 30 according to the present invention, the holding jig 1 which is released from the molding die 30 without deforming the reinforcing member 5 and maintains the flatness of the reinforcing member 5. And 2 can be manufactured. Therefore, according to the present invention, a manufacturing method capable of manufacturing a holding jig that is released from a molding die and maintains the flatness of the reinforcing member without deforming the reinforcing member, and the reinforcing member is deformed. It is possible to provide a molding die that can be easily released without any problems.

  The molding die according to the present invention is not limited to the above-described embodiments, and various modifications can be made within a range in which the object of the present invention can be achieved. For example, in the molding die 30, the first die 31 has two split dies 41 and 51. In the present invention, the first die has n (n is an integer of 2 or more) split dies. You may do it. Here, n is not particularly limited as long as it is an integer of 2 or more, but if it is too large, the molding die becomes complicated and the production efficiency may be lowered. In consideration of simplification of the above and production efficiency, the n is, for example, preferably 2 to 5, more preferably 2 or 3, and particularly preferably 2. In the molding die 30, the first die 31 has two divided dies 41 and 51. In the present invention, the second die is divided into n pieces (n is an integer of 2 or more). The mold may have a mold, and both the first mold and the second mold may have n pieces (n is an integer of 2 or more). Of the n divided molds, each of the divided molds that do not form the arrangement space has a forming pin and a through hole, as in the second divided mold 51.

  In the molding die 30, the first die 31 is a movable die and the second die 32 is a stationary die. In the present invention, at least one of the first die and the second die is a movable die. The first mold and the second mold may be both movable.

  In the molding die 30, the arrangement space 35 is a sandwiching space. In the present invention, the arrangement space may be a storage space for storing a reinforcing member. In this case, a storage recess capable of storing the reinforcing member is formed by the first mold and the second mold. For example, the storage recess includes a first recess in which the first mold, in particular, the second split mold 51 can form the storage recess, and / or a second recess in which the second mold can form the storage recess. Have.

  In the molding die 30, the molding pins 33 are classified into two groups, and are composed of the first molding pin 42 and the second molding pin 52 as a whole. n may be classified into an integer of 2 or more. As described above, n is preferably 2 to 5, more preferably 2 or 3, and particularly preferably 2.

  In the molding die 30, the molding pin 33 is erected on the first die 31, but in the present invention, a part of the molding pin may be erected on the second die.

  In the molding die 30, the first die 31 has two divided dies 41 and 51 to be stacked. In the present invention, the first die is divided into two pieces that are separated and overlapped. The molds 41 and 51 may be included.

  In the molding die 30, the molding pins 33 are arranged in a so-called “staggered” or grid pattern. In this invention, the molding pins are arranged in the same manner as the holding holes of the holding jig to be manufactured. The sequence is not particularly limited. For example, as the arrangement of the forming pins, for example, a so-called “staggered” arrangement in which the first holding holes 15A are the outermost rows in the first arrangement direction and the second holding holes 15B are the outermost rows in the second arrangement direction. A so-called “staggered” arrangement in which the angle is 15 to 75 ° (excluding 45 °), an inclined square arrangement obtained by rotating the grid-like arrangement by 45 degrees, and a honeycomb-like shape in which regular hexagons are arranged in a close-packed manner Examples thereof include an arrangement and a concentric arrangement.

  The manufacturing method of the holding jig according to the present invention is not limited to the above-described embodiments, and various modifications can be made within a range in which the object of the present invention can be achieved. For example, if necessary, in order to ensure the hardening of the elastic member 6, the integral molded body is subjected to secondary heating or heat treatment before the mold is released from the mold or after being released from the mold. May be.

  In the manufacturing method according to the present invention, the non-contact mold release step is performed independently after the first molding pin 42 is completely removed from the arrangement space 35. In the present invention, the non-contact mold release step is the first step. Before the first molding pin 42 is completely removed from the arrangement space 35, the first molding pin 42 remaining in the arrangement space 35 may be removed at the same time, that is, with a time difference from the contact release process.

  In one manufacturing method according to the present invention, the mold release process is a two-stage mold release process having a contact mold release process and a non-contact mold release process by classifying molding pins into two groups. In the mold release step, the molding pins are classified into n groups, and the molding pins from the first group to the (n-1) th group (n is an integer of 2 or more) are formed between the molding die and the integral molded body A contact mold release step for sequentially removing each group in the same direction while maintaining the contact state, and a non-contact mold release for removing the molding pins classified into the nth group in the same direction as the contact mold release step. It can also be set as the n-stage mold release process which has a process.

  One manufacturing method according to the present invention is a method of removing the molding pin 33 erected on the first mold 31 as the movable mold in two stages. In the present invention, the first mold as the movable mold is removed. Forming pins are erected on each of the second mold as the mold and the stationary mold, and only the molding pins erected on the first mold or the second mold are sequentially the same in n stages (n is an integer of 2 or more). You may withdraw in the direction.

  In one manufacturing method according to the present invention, the non-contact mold release step is performed while releasing the contact state between the integrally molded body and the second split mold. It may be carried out after releasing the contact state between the molded body and the second split mold.

DESCRIPTION OF SYMBOLS 1, 2 Holding jig 5 Reinforcing member 6 Elastic member 11 Support hole 12 Flat part 13 Gutter part 15 Holding hole 30 Molding die 31 First mold 32 Second mold 33 Molding pin 34 Link member 35 Arrangement space 41 First Split mold 42 First molding pin 51 Second split mold 52 Second molding pin 53 Through hole

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, wherein the reinforcing member passes through the inside of the support hole. A manufacturing method for manufacturing a holding jig embedded in a molding die integrally formed with a molding die in which a plurality of molding pins forming the holding hole are erected,
A mold release step of sequentially removing the plurality of molding pins in the same direction in n steps (n is an integer of 2 or more) and releasing the integrally molded body molded in the molding die from the molding die; A method of manufacturing a holding jig. The mold release step
While maintaining the contact state between the integrally molded body and the molding die, the molding pins classified from the first group to the (n-1) th group (n is an integer of 2 or more) are arranged in the same direction ( n-1) contact mold release step of sequentially removing in stages,
Subsequent to the contact release step, a non-contact release step of releasing or releasing the contact state in the same direction as the contact release step, with the forming pins classified into the n-th group. The method for manufacturing a holding jig according to claim 1, comprising:   The method for manufacturing a holding jig according to claim 1, wherein the n is two. A reinforcing member formed with a support hole and an elastic member formed with a holding hole for elastically holding a small part, wherein the reinforcing member passes through the inside of the support hole. A molding die for molding a holding jig embedded in
The molding die includes a first die and a second die that overlap each other to form an arrangement space in which the reinforcing member is arranged.
The first mold has n divided molds (n is an integer of 2 or more) in which molding pins that form the holding holes are erected so as to stand upright in the arrangement space and overlap each other. A molding die characterized by The n divided types (n is an integer of 2 or more) are:
Forming the arrangement space together with the second mold, and a second split mold having a second molding pin and a through hole which are erected or perforated so as to have an arrangement similar to the arrangement of the support holes;
A first split mold that is disposed on the opposite side of the placement space with respect to the second split mold and that has a first molding pin that passes through the through-hole and vertically stands in the space. The molding die according to claim 4, wherein the molding die is characterized.   6. The molding die according to claim 4, wherein each of the n divided molds (n is an integer of 2 or more) includes a link member that regulates a relative movement amount thereof.   The said shaping | molding die is a shaping die used for the manufacturing method of the holding jig of any one of Claims 1-3, The any one of Claims 4-6 characterized by the above-mentioned. Molding mold.

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