WO2013061812A1 - Assembly for slide core guide unit, and slide core guide unit - Google Patents

Assembly for slide core guide unit, and slide core guide unit Download PDF

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Publication number
WO2013061812A1
WO2013061812A1 PCT/JP2012/076603 JP2012076603W WO2013061812A1 WO 2013061812 A1 WO2013061812 A1 WO 2013061812A1 JP 2012076603 W JP2012076603 W JP 2012076603W WO 2013061812 A1 WO2013061812 A1 WO 2013061812A1
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WO
WIPO (PCT)
Prior art keywords
trunnion
guide unit
core guide
slide core
bush
Prior art date
Application number
PCT/JP2012/076603
Other languages
French (fr)
Japanese (ja)
Inventor
克樹 梅原
持丸　昌己
秀樹 桐明
純一 店橋
Original Assignee
オイレス工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by オイレス工業株式会社 filed Critical オイレス工業株式会社
Priority to CN201280052167.1A priority Critical patent/CN103906616A/en
Priority to KR1020147012249A priority patent/KR20140084136A/en
Publication of WO2013061812A1 publication Critical patent/WO2013061812A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/24—Accessories for locating and holding cores or inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • B29C45/332—Mountings or guides therefor; Drives therefor

Definitions

  • This invention relates to the slide core guide unit which guides the inclination pin for taking out the undercut part of a molded product.
  • a slide core guide unit described in Patent Document 1 is known as a slide core guide unit capable of preventing the pin holder from wobbling with respect to the slide base.
  • annular grooves are formed on the outer periphery of the trunnion portion (rotating shaft) provided on both sides of the pin holder for holding the inclined pin, and O-rings are respectively fitted in these grooves. ing.
  • Each trunnion portion of the pin holder is inserted into a through hole of the slide plate guided by the guide groove of the slide base with the O-ring attached.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a high-strength slide core guide unit that has good workability when mounting an inclined pin on a pin holder and can be manufactured at a lower cost. It is to provide an assembly to be used.
  • a bush in which a metal mesh is covered with a resin layer for example, a bush in which an expanded metal that can be expanded and contracted in the thickness direction is covered with a resin layer having a low friction coefficient is used. It is interposed between the inner peripheral surface of the insertion hole and the outer peripheral surface of the trunnion portion of the pin holder.
  • the assembly for the slide core guide unit is: A pin holder for attaching an inclined pin for taking out a molded product from a mold having a trunnion part; A trunnion insertion hole into which the trunnion part is inserted is formed, and a slide plate that moves in a predetermined direction while rotatably supporting the trunnion part in the trunnion insertion hole; A bush interposed between the outer peripheral surface of the trunnion part and the inner peripheral surface of the trunnion insertion hole, The bush Metal mesh, And a resin layer filled and covered with the metal mesh.
  • the metal mesh is Compressed between the outer peripheral surface of the trunnion portion and the inner peripheral surface of the trunnion insertion hole, and can be expanded and contracted in the thickness direction of the gap between the outer peripheral surface of the trunnion portion and the inner peripheral surface of the trunnion insertion hole,
  • the resin layer is The coefficient of friction may be lower than that of the metal mesh.
  • the metal mesh is preferably, for example, expanded metal made of phosphor bronze
  • the resin layer is, for example, a lubrication containing, as a main component, ethylene tetrafluoride resin, which contains phenol resin and polyimide resin. Sex compositions are preferred.
  • the slide core guide unit according to the present invention is An assembly for the slide core guide unit described above; A slide base in which the slide plate is slidably inserted and a guide groove is formed to guide the slide plate in a predetermined direction.
  • the flange bushing in which the metal mesh is covered with the resin layer is inserted into the trunnion insertion hole of the slide plate, and the trunnion portion of the pin holder is press-fitted into the flange bushing. For this reason, even if the trunnion portion of the pin holder is not subjected to machining such as grooving, the pin holder that is rotatably held by the slide base is prevented from rotating by its own weight with an appropriate frictional resistance. The attitude of the pin holder can be maintained. For this reason, a high-strength slide core guide unit with good workability when attaching an inclined pin for extruding a molded product from a mold to the pin holder and an assembly used for the same can be manufactured at a lower cost.
  • FIG. 1 is an external view of a slide core guide unit 1 according to an embodiment of the present invention.
  • 2A is a top view of the slide core guide unit 1 shown in FIG. 1
  • FIG. 2B is a cross-sectional view along AA in FIG. 2A
  • FIG. 3 is a sectional view taken along line BB in FIG. 3A is a top view of the slide base 5
  • FIGS. 3B and 3C are a CC sectional view and a DD sectional view of FIG. 3A, respectively.
  • D) is a right side view of the slide base 5.
  • 4A, 4B, and 4C are an external view, a top view, and a side view of the slide plate 3
  • FIG. 4D is an EE cross-sectional view of FIG. 4B.
  • FIG. 5A, 5B, 5C, and 5D are an external view, a front view, a side view, and a top view of the pin holder 2 to which the parallel key 7 is attached.
  • FIG. FIG. 6 is a cross-sectional view taken along the line FF in FIG. 6 (A), (B), (C), and (D) are an external view, a front view, a top view, and a bottom view of the flange bush 4, and
  • FIG. 6 (E) is a view of FIG. 6 (C).
  • FIG. 6F is a sectional view taken along the line GG, and FIG. 6F is an enlarged view of a portion A in FIG. FIG.
  • FIG. 7A is a diagram for explaining an example of the procedure for assembling the pin holder 2 into the slide base 5
  • FIG. 7B is another example of the procedure for assembling the pin holder 2 into the slide base 5.
  • FIG. 7C is a view for explaining, and FIG. 7C is a view showing another example of attachment of the flange bush 4 to the slide plate 3.
  • FIG. 1 is an external view of a slide core guide unit 1 according to the present embodiment
  • FIG. 2 (A) is a top view of the slide core guide unit 1.
  • 2B is a cross-sectional view taken along the line AA in FIG. 2A
  • FIG. 2C is a cross-sectional view taken along the line BB in FIG. 2A.
  • a slide core guide unit 1 includes a pin holder 2 for holding an inclined pin 9 for taking out a molded product from a mold, and a pair of slide plates for holding the pin holder 2 rotatably. 3, a flange bush 4 for preventing rotation of the pin holder 2 relative to the slide plate 3 due to its own weight, a slide base 5 that guides the slide plate 3 along the direction of taking out a molded product from the mold, and an inclined pin 9 as a pin holder Hexagon socket head cap screw 6 for fixing to 2, parallel key 7 for preventing rotation of inclined pin 9, and fixing screw 8 for parallel key 7.
  • FIGS. 3B and 3C are a CC sectional view and a DD sectional view of FIG. 3A, respectively.
  • D) is a right side view of the slide base 5.
  • the slide base 5 is incorporated in an ejector plate attached to a molding machine (not shown). As shown in the figure, the slide base 5 includes a pair of base blocks 51 arranged at a predetermined interval T1, two spacers 52 and four fixing screws 53 that connect the base blocks 51, and ,have.
  • Each base block 51 is formed with a plurality of screw holes 515 penetrating both end faces 513A and 513B that can be used as attachment surfaces to the ejector plate. Mounting screws inserted into the corresponding through holes of the ejector plates into the respective screw holes 515 of the two base blocks 51 in a state in which either one of the end surfaces 513A, 513B of the two base blocks 51 is used as a mounting surface and in contact with the ejector plate.
  • the slide base 5 is fixed to the ejector plate by fastening the mounting screws inserted into the respective screw holes 515 of the two base blocks 51 into the corresponding screw holes of the ejector plate.
  • guide grooves 511 along the moving direction of the pin holder 2 are formed on the opposing surfaces 512 of the two base blocks 51 (surfaces facing each other toward the other base block 51).
  • the guide groove 511 is open on both side surfaces 517 adjacent to the surface 512 facing the other base block 51.
  • the slide plate 3 is inserted into the guide groove 511 from the side surface 517 side of the base block 51 and is slidably accommodated (see FIG. 2C). 3 shows a case where the guide grooves 511 are inclined with respect to the end surfaces 513A and 513B of the base block 51 as an example, but the end surfaces 513A and 513B of the base block 51 and the guide grooves 511 The angle is appropriately determined according to the shape of the undercut portion of the molded product.
  • Screw holes are formed on both side surfaces 517 of the two base blocks 51 at positions corresponding to the screw holes on the other base block 51 side.
  • through holes 522 are formed at intervals corresponding to the interval T1 to be held between the two base blocks 51.
  • These spacers 52 are respectively spanned between the side surfaces 517 of the two base blocks 51 arranged to face each other, and the fixing screws 53 inserted into the respective through holes 522 and screw holes (not shown) on the side surfaces 517 of the base block 51. It is fixed by fastening with. As a result, the two base blocks 51 are fixed at positions having a predetermined interval T1.
  • FIG. 4A, 4B, and 4C are an external view, a top view, and a side view of the slide plate 3, and FIG. 4D is a GG cross-sectional view of FIG. 4B. .
  • the two slide plates 3 are inserted into the guide grooves 511 from the side surfaces 517 of the two base blocks 51 one by one, and can slide in the guide grooves 511 of the two base blocks 51 while holding the pin holder 2. (See FIG. 2C). As shown in the figure, at least one of the surfaces 31A and 31B of each slide plate 3 that slides with the groove bottom 5112 of the guide groove 511 of the base block 51 (31A in FIG. 4) is exposed to the surface. A solid lubricant 33 is embedded.
  • the end surfaces 31 ⁇ / b> C and 31 ⁇ / b> D that slide with the side walls 5111 of the guide grooves 511 of the slide base 5 are also embedded with the solid lubricant 33 exposed on the surface.
  • each slide plate 3 is formed with a trunnion insertion hole 32 penetrating from one surface 31A to the other surface 31B.
  • the trunnion portion 22 of the pin holder 2 is rotatably inserted into the trunnion insertion hole 32 via the flange bush 4 (see FIG. 2C).
  • FIG. 5A, 5B, 5C, and 5D are an external view, a front view, a side view, and a top view of the pin holder 2 to which the parallel key 7 is attached.
  • FIG. FIG. 6 is a cross-sectional view taken along the line FF in FIG.
  • the pin holder 2 is accommodated between the two base blocks 51 of the slide base 5 through a pair of slide plates 3 so as to be rotatable and slidable.
  • the pin holder 2 has a block-shaped holder main body 21 to which the fixed end 91 of the inclined pin 9 is fixed, and the four side surfaces 211A to 211D of the holder main body 21 facing each other in parallel with the sliding direction.
  • a pair of trunnion portions (rotating shafts) 22 formed integrally with the two side surfaces 211A and 211B, and the width t1 of the holder body 21 is narrower than the interval T1 between the two base blocks 51.
  • the distance t2 between the end surfaces 221 of the trunnion part 22 is narrower than the distance T2 between the groove bottoms 5112 of the guide grooves 511 of the two base blocks 51.
  • the holder main body 21 has a pin insertion hole 214 formed on one end face (a face other than the side faces 211A to 211D: hereinafter referred to as an upper face) 212A directed to the cavity side of the molding machine, and on the opposite side of the upper face 212A.
  • a bolt insertion hole 215 with a countersink that penetrates the bottom surface 2141 of the pin insertion hole 214 is formed in the surface (bottom surface) 212B.
  • a key groove 216 is formed at a position where it partially contacts the peripheral surface of the pin insertion hole 214 in the axial direction of the pin insertion hole 214, and a side surface 211A provided with a trunnion portion 22.
  • 211B a screw insertion hole 217 that penetrates the inner wall of the keyway 216 is formed in the side surface 211C.
  • the fixed end 91 of the inclined pin 9 is inserted into the pin insertion hole 214 from the upper surface 212A side of the holder body 21, and the hexagon socket head bolt 6 is inserted into the bolt insertion hole 215 from the bottom surface 212B side of the holder body 21.
  • the insertion hole 214 is fastened to the screw hole 94 in the end surface 93 of the inclined pin 9.
  • the parallel key 7 is accommodated in the key groove 216 from the upper surface 212 ⁇ / b> A side of the holder main body 21, and the fixing screw 8 is inserted into the screw insertion hole 217 from the side surface 211 ⁇ / b> C side of the holder main body 21. Fastened to the screw hole 71 of the key 7.
  • the parallel key 7 fixed to the holder main body 21 in this way comes into surface contact with the notch portion 92 of the inclined pin 9 inserted into the pin insertion hole 214 of the holder main body 21.
  • the tilt pin 9 is positioned in a predetermined direction, and the tilt pin 9 is prevented from rotating with respect to the holder body 21.
  • the pair of trunnion portions 22 have a common axis O that crosses the pin insertion hole 214 of the holder main body 21. As described above, these trunnion portions 22 are rotatably inserted into the trunnion insertion holes 32 of the slide plate 3 slidably received in the guide grooves 511 of the two slide bases 5 via the flange bush 4. ing. For this reason, the tilt pin 9 inserted into the pin insertion hole 214 of the holder body 21 can be adjusted in tilt angle according to the undercut angle by rotation around the axis O of the pin holder 2 during setting. During the cutting process, along with the movement of the ejector plate, it reciprocates together with the pin holder 2 along the guide grooves 511 of the two slide bases 5.
  • FIG. 6A is an external view of the flange bush 4, and FIGS. 6B, 6C, and 6D are enlarged views of a front view, a top view, and a bottom view of the flange bush 4.
  • FIG. 6 (E) is a cross-sectional view taken along the line GG in FIG. 6 (C), and FIG. 6 (F) is an enlarged view of a portion A in FIG. 6 (E).
  • each of the two flange bushings 4 is interposed between the pin holder 2 and the slide plate 3, more specifically, between the outer peripheral surface 222 of the trunnion portion 22 and the inner peripheral surface 321 of the trunnion insertion hole 32.
  • each flange bush 4 includes a cylindrical bush body 41 inserted into the trunnion insertion hole 32 of the slide plate 3, and a retaining flange 42 protruding from the outer periphery of one end 414 of the bush body 41. It is equipped with.
  • the trunnion portion 22 of the pin holder 2 is further press-fitted therein.
  • the bush body 41 can be deformed in accordance with the inner diameter of the trunnion insertion hole 32 when the slide plate 3 is inserted into the trunnion insertion hole 32, or the trunnion portion when the trunnion portion 22 of the pin holder 2 is press-fitted into the bush body 41.
  • Each flange bush 4 is provided with a slit 45 over the entire axial length (from the other end 413 of the bush body 41 to the outer peripheral surface 423 of the flange 42) so that the bush body 41 can be deformed in accordance with the outer diameter of the bush 22. Is formed.
  • the flange bush 4 is made of a composite material in which a metal mesh 46 that can be expanded and contracted in the thickness direction ⁇ is used as a base material, and the base material is filled and covered with a resin layer 44 having a lower friction coefficient than the metal mesh forming material. Is formed.
  • the flange bush 4 includes a metal mesh 46 having a metal wire portion that undulates in the thickness direction ⁇ of the flange bush 4, and each metal wire portion constituting the metal mesh 46 partially has one surface 441. And a resin layer 44 covered with a metal mesh 46 so as to be exposed from the side.
  • a metal mesh 46 for example, a network-like expanded formed by stretching a metal plate made of phosphor bronze in which a plurality of rows of slits in a predetermined direction are formed in a direction crossing the direction of the slits, for example.
  • Metal is mentioned.
  • the resin layer 44 is preferably formed of, for example, a lubricating composition containing, as a main component, an ethylene tetrafluoride resin, and a phenol resin and a polyimide resin.
  • the exposed surface 441 of the metal mesh 46 forms the outer peripheral surface 411 of the bush main body 41 and the upper surface (surface on the bush main body 41 side) 421 of the flange 42, and the metal mesh 46 is not exposed.
  • the resin surface 442 forms an inner peripheral surface 412 of the bush main body 41 and a bottom surface (surface opposite to the bush main body 41) 422 of the flange 42.
  • the inner peripheral surface 412 of the bush main body 41 that contacts the pin holder 2 and the bottom surface 422 of the flange 42 form a sliding surface with a low friction coefficient
  • the upper surface 421 of the flange 42 forms a friction surface having a higher friction coefficient than the inner peripheral surface 412 of the bush main body 41 and the bottom surface 422 of the flange 42.
  • FIG. 7A is a diagram for explaining the procedure for assembling the pin holder 2 into the slide base 5.
  • the bush main body 41 of the flange bush 4 and the upper surface 421 of the flange 42 slide from the surface 31B side where the solid lubricant 33 is not embedded in the trunnion insertion holes 32 of the two slide plates 3, respectively. Insert until the surface 31B of the plate 3 contacts.
  • the outer peripheral surface 411 of the bush body 41 is a friction surface having a high friction coefficient, each flange bush 4 is held in the trunnion insertion hole 32 of the slide plate 3 without dropping off.
  • the two trunnion portions 22 of the pin holder 2 are press-fitted from the flange 42 side into the bushing body 41 of the flange bushing 4 mounted in the trunnion insertion hole 32 of each slide plate 3.
  • the bush main body 41 is deformed in accordance with the outer shape of the trunnion portion 22 of the pin holder 2 due to the change in the width of the slit 45, and the metal mesh 46 in the bush main body 41 is deformed to the outer peripheral surface of the trunnion portion 22 of the pin holder 2.
  • the thickness direction ⁇ (the outer peripheral surface 222 of the trunnion portion 22 of the pin holder 2 and the inner peripheral surface 321 of the trunnion insertion hole 32 of the slide plate 3. Compressed in the thickness direction of the gap) and elastically deforms in accordance with the gap between the outer peripheral surface 222 of the trunnion portion 22 of the pin holder 2 and the inner peripheral surface 321 of the trunnion insertion hole 32 of the slide plate 3.
  • the assembly 10 is accommodated between the base blocks 51 of the slide base 5. Specifically, one of the two spacers 52 is removed from the two base blocks 51 and then the slide plates 3 are inserted into the guide grooves 511 of the two base blocks 51 one by one. Thus, the assembly 10 is inserted between the two base blocks 51. Thereby, the pin holder 2 is accommodated between the two base blocks 51 so as to be movable along the guide groove 511 while being rotatably supported by the two slide plates 3.
  • the flange bush formed by the composite material in which the metal mesh 46 that can be expanded and contracted in the thickness direction ⁇ is covered with the resin layer 44 having a low friction coefficient. 4 is inserted into the trunnion insertion hole 32 of the slide plate 3, and the trunnion portion 22 of the pin holder 2 is press-fitted into the flange bush 4.
  • the resin layer 44 of the flange bush 4 enables the pin holder 2 to rotate smoothly with respect to the slide plate 3, and the trunnion portion 22 of the pin holder 2 is subjected to machining such as grooving.
  • more resin layer 44 is exposed on the inner peripheral surface 412 of the bush body 41 and the bottom surface 422 side of the flange 42 than the outer peripheral surface 411 of the bush body 41 and the upper surface 421 side of the flange 42.
  • the metal mesh 46 to the outer peripheral surface 411 of the bush main body 41 and the upper surface 421 side of the flange 42 more than the inner peripheral surface 412 of the bush main body 41 and the bottom surface 422 side of the flange 42, the bush main body 41 and the pin holder 2.
  • the contact surface (the inner peripheral surface 412 of the bush main body 41 and the bottom surface 422 of the flange 42) is a sliding surface having a low friction coefficient, while the contact surface between the bush main body 41 and the slide plate 3 (the outer peripheral surface of the bush main body 41). 411 and the upper surface 421) of the flange 42 are friction surfaces having a high friction coefficient. For this reason, the friction surface of the flange bush 4 with a high friction coefficient can generate an appropriate frictional force that can prevent rotation due to the weight of the pin holder 2, and the sliding surface of the flange bush 4 with a low friction coefficient Smooth rotation of the pin holder 2 can be realized by applying an appropriate force by the operator. Thereby, positioning of the pin holder 2 when attaching the inclined pin 9 can be facilitated.
  • a low friction coefficient region that slides with the pin holder 2 is formed by the bottom surface 422 of the flange 42 surrounding the trunnion insertion hole 32. Therefore, even if the solid lubricant 33 is not embedded in the surfaces 31B of the two slide plates 3 (or even if the number of solid lubricants 33 embedded in the surfaces 31B of the two slide plates 3 is reduced).
  • the pin holder 2 and the slide plate 3 can also be prevented from being galled by directing the one surface 31B of the slide plate 3 toward the pin holder 2 side.
  • the bush main body 41 has the slit 45.
  • the thickness of the bush body 41 is changed by the elastic deformation of the metal mesh 46 and the trunnion 22 of the pin holder 2 and the trunnion of the slide plate 3 are inserted. It changes according to the gap with the hole 32.
  • the trunnion portion 22 of the pin holder 2 is fitted into the bush body 41 in the trunnion insertion hole 32 of the slide plate 3 with zero clearance, rattling of the pin holder 2 can be prevented.
  • the inner peripheral surface 412 of the bushing body 41 of the flange bush 4 is a sliding surface covered with the resin layer 44 having a low coefficient of friction, and an expanded material having elasticity. Since the metal is used as the base material of the bush body 41, the trunnion portion 22 of the pin holder 2 can be smoothly inserted into the bush body 41 of the flange bush 4.
  • the trunnion portion 22 of the pin holder 2 may be press-fitted into the bushing body 41 of the flange bushing 4, and the trunnion portion 22 with the flange bushing 4 may be further press-fitted into the trunnion insertion hole 32 of the slide plate 3.
  • the flange bush 4 is formed of a composite material in which the metal mesh 46 is covered with the resin layer 44, the thickness is smaller than that of the bush formed of resin alone. Also excellent in wear resistance. For this reason, even if the clearance gap between the outer peripheral surface 222 of the trunnion part 22 of the pin holder 2 and the inner peripheral surface 321 of the trunnion insertion hole 32 of the slide plate 3 is slight, the flange bush 4 can be interposed.
  • flange bush 4 formed by integral molding may be used. In such a flange bush, serrations may be formed on the inner peripheral surface of the bush main body and the bottom surface of the flange, or on the outer peripheral surface of the bush main body and the upper surface of the flange.
  • the trunnion insertion holes 32 of the two slide plates 3 are respectively inserted from the surface 31B side opposite to the surface 31A sliding with the groove bottom 5112 of the guide groove 511 of the base block 51.
  • the bush body 41 of the flange bush 4 is press-fitted.
  • FIG. 7B from the surface 31A side that slides with the groove bottom 5112 of the guide groove 511 of the base block 51, The bush body 41 of the flange bush 4 may be press-fitted.
  • a low friction coefficient region is formed on the surfaces 31A of the two slide plates 3 by the bottom surface 422 of the flange 42 surrounding the trunnion insertion hole 32.
  • the slide plate 3 forms the guide groove 511 of the base block 51. Move more smoothly. For this reason, the occurrence of galling can be prevented.
  • the low friction coefficient region is formed on the surface 31A side of the slide plate 3 by using the bottom surface 422 of the flange 42 of the flange bush 4 as described above, it is embedded in the surface 31A of the two slide plates 3 correspondingly. The number of solid lubricants 33 may be reduced.
  • the exposed surface 441 of the metal mesh 46 forms the outer peripheral surface 411 of the bush body 41 and the upper surface 421 of the flange 42, and the resin surface 442 where the metal mesh 46 is not exposed is formed on the bush body 41.
  • the exposed surface 441 of the metal mesh 46 forms the inner peripheral surface 412 of the bush body 41 and the bottom surface 422 of the flange 42, and the metal peripheral surface 412 and the bottom surface 422 of the flange 42 are formed.
  • the resin surface 442 where the mesh 46 is not exposed may form the outer peripheral surface 411 of the bush body 41 and the upper surface 421 of the flange 42.
  • the flange 42 is provided only on the outer periphery of the one end 414 of the bush main body 41, but as shown in FIG. 7C, the flange 42 is also provided on the outer periphery of the other end 413 of the bush main body 41.
  • a flange 43 may be provided.
  • the flange bush 4 with the single flange 42 having the same shape as the flange bush 4 of FIG. 6 is used.
  • the height of the bush main body 41 is larger by s2 than the plate thickness of the slide plate 3 by the length s1 of the flange 43 formed at the other end 413 of the flange bush 4.
  • the bushing body 41 of the flange bushing 4 is inserted into the trunnion insertion hole 32 from the one surface 31A, 31B side of the slide plate 3 and protrudes from the other surface 31B, 31A side of the sliding plate 3 of the bushing body 41. Press and hold with a pin.
  • the flange 43 is also formed at the other end 413 of the bush body 41, and the flange bush 4 with both flanges 42, 43 is attached to the trunnion insertion hole 32 of the slide plate 3.
  • the present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the gist.
  • the present invention may be applied to a slide core guide unit including an adjustment rod and a lock nut for adjusting the height of the inclined pin 9 with respect to the pin holder 2.
  • the present invention is, for example, an application for realizing a high-strength slide core guide unit that can be manufactured at a lower cost with good workability when an inclined pin for taking out an undercut portion of a molded product is attached to a pin holder. It is also applicable to.

Abstract

　Provided is a high-strength slide core guide unit that has good workability when an angular pin is attached to a pin holder, and that can be manufactured at a lower cost.　An assembly (10) for a slide core guide unit (1) has flange bushings (4) interposed between the inner peripheral surfaces of trunnion insertion holes (32) in slider plates (3) and the outer peripheral surfaces of trunnions (22) of a pin holder (2). The flange bushings (4) are formed from a composite material in which a metallic mesh, which can be expanded and contracted in the thickness direction, has been coated by a resin layer. The flange bushings (4) are compressed in the thickness direction by the outer peripheral surfaces of the trunnions (22) of the pin holder (2) and the inner peripheral surfaces of the trunnion insertion holes (32) in the slider plates (3). The surfaces (inner peripheral surfaces of main bushing bodies (41), bottom surfaces of flanges (42)) of the flange bushings (4) that make contact with the pin holder (2) form sliding surfaces which have a low coefficient of friction, and from which the metallic mesh is not exposed. The surfaces (outer peripheral surfaces (411) of the main bushing bodies (41), upper surfaces (421) of the flanges (42)) of the flange bushings (4) that make contact with the slider plates (3) form frictional surfaces which have a high coefficient of friction, and from which the metallic mesh is exposed.

Description

スライドコアガイドユニット用の組み付け体およびスライドコアガイドユニットAssembly for slide core guide unit and slide core guide unit
　本発明は、成型品のアンダーカット部を取り出すための傾斜ピンを案内するスライドコアガイドユニットに関する。 This invention relates to the slide core guide unit which guides the inclination pin for taking out the undercut part of a molded product.
　スライドベースに対するピンホルダのふらつきを防止可能なスライドコアガイドユニットとして、特許文献１記載のスライドコアガイドユニットが知られている。このスライドコアガイドユニットにおいては、傾斜ピンを保持するためのピンホルダの両側に設けられたトラニオン部（回転軸）の外周に環状の溝が切られており、これらの溝にそれぞれＯリングがはめ込まれている。ピンホルダの各トラニオン部は、Ｏリングが装着された状態で、スライドベースのガイド溝により案内されるスライドプレートの貫通穴に挿入されている。 A slide core guide unit described in Patent Document 1 is known as a slide core guide unit capable of preventing the pin holder from wobbling with respect to the slide base. In this slide core guide unit, annular grooves are formed on the outer periphery of the trunnion portion (rotating shaft) provided on both sides of the pin holder for holding the inclined pin, and O-rings are respectively fitted in these grooves. ing. Each trunnion portion of the pin holder is inserted into a through hole of the slide plate guided by the guide groove of the slide base with the O-ring attached.
　このような構造とすることにより、Ｏリングとスライドプレートの貫通穴の内周面との間に摩擦抵抗が発生するため、ピンホルダは、スライドプレートに対して回転可能に保持されつつ、スライドプレートに対する回転に適度な制動力が与えられる。このため、スライドプレートに対するピンホルダのふらつき、つまり、スライドベースに対するピンホルダのふらつきが防止され、ピンホルダへの傾斜ピンの装着中、スライドベースに対するピンホルダの姿勢が保持される。これにより、ピンホルダへの傾斜ピンの装着時における作業効率が向上する。 By adopting such a structure, a frictional resistance is generated between the O-ring and the inner peripheral surface of the through hole of the slide plate, so that the pin holder is held against the slide plate while being rotatably held with respect to the slide plate. A moderate braking force is applied to the rotation. For this reason, the wobbling of the pin holder with respect to the slide plate, that is, the wobbling of the pin holder with respect to the slide base is prevented, and the posture of the pin holder with respect to the slide base is maintained while the inclined pin is attached to the pin holder. Thereby, the working efficiency at the time of attachment of the inclined pin to the pin holder is improved.
特開２００１－７９８９８号公報JP 2001-79898 A
　上記従来のスライドコアガイドユニットにおいては、Ｏリングをはめ込むための溝をピンホルダの各トラニオン部の外周に形成する必要がある。このため、溝加工のためのコストがかかる。また、例えば、スライドコアガイドユニットの小型化にともない、ピンホルダのトラニオン部（回転軸）が小径化された場合、このようなＯリング用の溝をピンホルダの各トラニオン部の外周に切ると、トラニオン部の強度に影響を与える可能性がある。 In the above conventional slide core guide unit, it is necessary to form a groove for fitting the O-ring on the outer periphery of each trunnion portion of the pin holder. For this reason, the cost for a groove process starts. Also, for example, when the trunnion portion (rotating shaft) of the pin holder is reduced in size due to the downsizing of the slide core guide unit, if such an O-ring groove is cut on the outer periphery of each trunnion portion of the pin holder, the trunnion It may affect the strength of the part.
　本発明は上記事情に鑑みてなされたものであり、その目的は、ピンホルダへ傾斜ピンを装着する際の作業性がよく、かつより低コストで製造可能な高強度のスライドコアガイドユニットおよびこれに用いる組み付け体を提供することにある。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a high-strength slide core guide unit that has good workability when mounting an inclined pin on a pin holder and can be manufactured at a lower cost. It is to provide an assembly to be used.
　上記課題を解決するため、本発明においては、金属メッシュを樹脂層で被覆したブッシュ、例えば、厚さ方向に伸縮可能なエキスパンドメタルを低摩擦係数の樹脂層で被覆したブッシュを、スライドプレートのトラニオン挿入穴の内周面とピンホルダのトラニオン部の外周面との間に介在させる。 In order to solve the above-described problems, in the present invention, a bush in which a metal mesh is covered with a resin layer, for example, a bush in which an expanded metal that can be expanded and contracted in the thickness direction is covered with a resin layer having a low friction coefficient is used. It is interposed between the inner peripheral surface of the insertion hole and the outer peripheral surface of the trunnion portion of the pin holder.
　例えば、本発明に係るスライドコアガイドユニット用の組み付け体は、
　トラニオン部を有し、金型から成型品を取り出すための傾斜ピンを取り付けるためのピンホルダと、
　前記トラニオン部が挿入されるトラニオン挿入穴が形成され、当該トラニオン挿入穴で前記トラニオン部を回転可能に支持しながら所定の方向に移動するスライドプレートと、
　前記トラニオン部の外周面と前記トラニオン挿入穴の内周面との間に介在するブッシュと、を備え、
　前記ブッシュは、
　金属メッシュと、
　前記金属メッシュを充填、被覆した樹脂層と、を有している。 For example, the assembly for the slide core guide unit according to the present invention is:
A pin holder for attaching an inclined pin for taking out a molded product from a mold having a trunnion part;
A trunnion insertion hole into which the trunnion part is inserted is formed, and a slide plate that moves in a predetermined direction while rotatably supporting the trunnion part in the trunnion insertion hole;
A bush interposed between the outer peripheral surface of the trunnion part and the inner peripheral surface of the trunnion insertion hole,
The bush
Metal mesh,
And a resin layer filled and covered with the metal mesh.
　なお、前記金属メッシュは、
　前記トラニオン部の外周面と前記トラニオン挿入穴の内周面との間で圧縮され、前記トラニオン部の外周面と前記トラニオン挿入穴の内周面との隙間の厚さ方向に伸縮可能であり、
　前記樹脂層は、
　前記金属メッシュよりも低摩擦係数であってもよい。 The metal mesh is
Compressed between the outer peripheral surface of the trunnion portion and the inner peripheral surface of the trunnion insertion hole, and can be expanded and contracted in the thickness direction of the gap between the outer peripheral surface of the trunnion portion and the inner peripheral surface of the trunnion insertion hole,
The resin layer is
The coefficient of friction may be lower than that of the metal mesh.
　また、前記金属メッシュは、例えば、りん青銅からなるエキスパンドメタルが好適であり、前記樹脂層は、例えば、四ふっ化エチレン樹脂を主成分として、これにフェノール樹脂及びポリイミド樹脂を含有してなる潤滑性組成物が好適である。 Further, the metal mesh is preferably, for example, expanded metal made of phosphor bronze, and the resin layer is, for example, a lubrication containing, as a main component, ethylene tetrafluoride resin, which contains phenol resin and polyimide resin. Sex compositions are preferred.
　また、本発明に係るスライドコアガイドユニットは、
　上述のスライドコアガイドユニット用の組み付け体と、
　前記スライドプレートがスライド可能に挿入され、当該スライドプレートを所定の方向に案内するガイド溝が形成されたスライドベースと、を備える。 The slide core guide unit according to the present invention is
An assembly for the slide core guide unit described above;
A slide base in which the slide plate is slidably inserted and a guide groove is formed to guide the slide plate in a predetermined direction.
　本発明によれば、金属メッシュを樹脂層で被覆したフランジブッシュがスライドプレートのトラニオン挿入穴内に挿入されており、このフランジブッシュ内にピンホルダのトラニオン部が圧入されている。このため、ピンホルダのトラニオン部に対して溝加工等の機械加工を施さなくても、適度な摩擦抵抗により、スライドベースに回転自在に保持されたピンホルダの、自重による回転が防止され、スライドベースに対するピンホルダの姿勢を保持することができる。このため、金型から成型品を押し出すための傾斜ピンをピンホルダへ装着する際の作業性がよい高強度なスライドコアガイドユニットおよびこれに用いる組み付け体を、より低コストで製造することができる。 According to the present invention, the flange bushing in which the metal mesh is covered with the resin layer is inserted into the trunnion insertion hole of the slide plate, and the trunnion portion of the pin holder is press-fitted into the flange bushing. For this reason, even if the trunnion portion of the pin holder is not subjected to machining such as grooving, the pin holder that is rotatably held by the slide base is prevented from rotating by its own weight with an appropriate frictional resistance. The attitude of the pin holder can be maintained. For this reason, a high-strength slide core guide unit with good workability when attaching an inclined pin for extruding a molded product from a mold to the pin holder and an assembly used for the same can be manufactured at a lower cost.
図１は、本発明の一実施の形態に係るスライドコアガイドユニット１の外観図である。FIG. 1 is an external view of a slide core guide unit 1 according to an embodiment of the present invention. 図２（Ａ）は、図１に示したスライドコアガイドユニット１の上面図であり、図２（Ｂ）は、図２（Ａ）のＡ－Ａ断面図であり、図２（Ｃ）は、図２（Ａ）のＢ－Ｂ断面図である。2A is a top view of the slide core guide unit 1 shown in FIG. 1, FIG. 2B is a cross-sectional view along AA in FIG. 2A, and FIG. FIG. 3 is a sectional view taken along line BB in FIG. 図３（Ａ）は、スライドベース５の上面図であり、図３（Ｂ）および（Ｃ）は、図３（Ａ）のＣ－Ｃ断面図およびＤ－Ｄ断面図であり、図３（Ｄ）は、スライドベース５の右側面図である。3A is a top view of the slide base 5, and FIGS. 3B and 3C are a CC sectional view and a DD sectional view of FIG. 3A, respectively. D) is a right side view of the slide base 5. 図４（Ａ）、（Ｂ）および（Ｃ）は、スライドプレート３の外観図、上面図および側面図であり、図４（Ｄ）は、図４（Ｂ）のＥ－Ｅ断面図である。4A, 4B, and 4C are an external view, a top view, and a side view of the slide plate 3, and FIG. 4D is an EE cross-sectional view of FIG. 4B. . 図５（Ａ）、（Ｂ）、（Ｃ）および（Ｄ）は、平行キー７が取り付けられたピンホルダ２の外観図、正面図、側面図および上面図であり、図５（Ｅ）は、図５（Ｄ）のＦ－Ｆ断面図である。5A, 5B, 5C, and 5D are an external view, a front view, a side view, and a top view of the pin holder 2 to which the parallel key 7 is attached. FIG. FIG. 6 is a cross-sectional view taken along the line FF in FIG. 図６（Ａ）、（Ｂ）、（Ｃ）および（Ｄ）は、フランジブッシュ４の外観図、正面図、上面図および底面図であり、図６（Ｅ）は、図６（Ｃ）のＧ－Ｇ断面図であり、図６（Ｆ）は、図６（Ｅ）のＡ部拡大図である。6 (A), (B), (C), and (D) are an external view, a front view, a top view, and a bottom view of the flange bush 4, and FIG. 6 (E) is a view of FIG. 6 (C). FIG. 6F is a sectional view taken along the line GG, and FIG. 6F is an enlarged view of a portion A in FIG. 図７（Ａ）は、スライドベース５へのピンホルダ２の組み込み手順の例を説明するための図であり、図７（Ｂ）は、スライドベース５へのピンホルダ２の組み込み手順の他の例を説明するための図であり、図７（Ｃ）は、スライドプレート３へのフランジブッシュ４の他の取付け例を示した図である。FIG. 7A is a diagram for explaining an example of the procedure for assembling the pin holder 2 into the slide base 5, and FIG. 7B is another example of the procedure for assembling the pin holder 2 into the slide base 5. FIG. 7C is a view for explaining, and FIG. 7C is a view showing another example of attachment of the flange bush 4 to the slide plate 3.
　以下に、本発明の一実施の形態について、図面を参照して説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
　まず、本実施の形態に係るスライドコアガイドユニット１の構成について説明する。 First, the configuration of the slide core guide unit 1 according to the present embodiment will be described.
　図１は、本実施の形態に係るスライドコアガイドユニット１の外観図であり、図２（Ａ）は、このスライドコアガイドユニット１の上面図である。また、図２（Ｂ）は、図２（Ａ）のＡ－Ａ断面図であり、図２（Ｃ）は、図２（Ａ）のＢ－Ｂ断面図である。 FIG. 1 is an external view of a slide core guide unit 1 according to the present embodiment, and FIG. 2 (A) is a top view of the slide core guide unit 1. 2B is a cross-sectional view taken along the line AA in FIG. 2A, and FIG. 2C is a cross-sectional view taken along the line BB in FIG. 2A.
　図示するように、本実施の形態に係るスライドコアガイドユニット１は、金型から成型品を取り出す傾斜ピン９を保持するためのピンホルダ２と、ピンホルダ２を回転可能に保持する１対のスライドプレート３と、スライドプレート３に対するピンホルダ２の自重による回転を阻止するためのフランジブッシュ４と、金型から成型品を取り出す方向に沿ってスライドプレート３を案内するスライドベース５と、傾斜ピン９をピンホルダ２に固定するための六角穴付きボルト６と、傾斜ピン９の回り止め用の平行キー７および平行キー７用の固定ネジ８と、を備えている。ここで、このスライドコアガイドユニット１の保持対象となる傾斜ピン９の一方の端部（金型から成型品を突き出す側の端部の反対側端部：以下、固定端部）９１の外周には、平行キー７に接触する平坦な切り欠き部９２が形成されており、さらに、この固定端部９１側の端面９３には、六角穴付きボルト６が締結されるネジ穴９４が形成されている。 As shown in the figure, a slide core guide unit 1 according to this embodiment includes a pin holder 2 for holding an inclined pin 9 for taking out a molded product from a mold, and a pair of slide plates for holding the pin holder 2 rotatably. 3, a flange bush 4 for preventing rotation of the pin holder 2 relative to the slide plate 3 due to its own weight, a slide base 5 that guides the slide plate 3 along the direction of taking out a molded product from the mold, and an inclined pin 9 as a pin holder Hexagon socket head cap screw 6 for fixing to 2, parallel key 7 for preventing rotation of inclined pin 9, and fixing screw 8 for parallel key 7. Here, on the outer periphery of one end of the inclined pin 9 to be held by the slide core guide unit 1 (the end opposite to the end protruding from the mold: the fixed end) Is formed with a flat cutout portion 92 that contacts the parallel key 7, and a screw hole 94 to which the hexagon socket bolt 6 is fastened is formed on the end surface 93 on the fixed end portion 91 side. Yes.
　スライドコアガイドユニット１の構成部品２～８の詳細は以下のとおりである。 The details of the components 2 to 8 of the slide core guide unit 1 are as follows.
　図３（Ａ）は、スライドベース５の上面図であり、図３（Ｂ）および（Ｃ）は、図３（Ａ）のＣ－Ｃ断面図およびＤ－Ｄ断面図であり、図３（Ｄ）は、スライドベース５の右側面図である。 3A is a top view of the slide base 5, and FIGS. 3B and 3C are a CC sectional view and a DD sectional view of FIG. 3A, respectively. D) is a right side view of the slide base 5.
　スライドベース５は、不図示の成型機に取り付けられるエジェクタプレートに組み込まれる。図示するように、このスライドベース５は、所定の間隔Ｔ１をおいて配置された１対のベースブロック５１と、これらのベースブロック５１を連結する２本のスペーサ５２および４本の固定ネジ５３と、を有している。 The slide base 5 is incorporated in an ejector plate attached to a molding machine (not shown). As shown in the figure, the slide base 5 includes a pair of base blocks 51 arranged at a predetermined interval T1, two spacers 52 and four fixing screws 53 that connect the base blocks 51, and ,have.
　各ベースブロック５１には、それぞれ、エジェクタプレートへの取付け面として利用可能な両端面５１３Ａ，５１３Ｂを貫通した複数のネジ穴５１５が形成されている。２つのベースブロック５１のいずれか一方の端面５１３Ａ，５１３Ｂを取付け面としてエジェクタプレートに接触させた状態で、２つのベースブロック５１の各ネジ穴５１５に、エジェクタプレートの対応貫通穴に挿入した取付けネジを締結する、または、２つのベースブロック５１の各ネジ穴５１５に挿入した取付けネジをエジェクタプレートの対応ネジ穴に締結することによって、スライドベース５はエジェクタプレートに固定される。 Each base block 51 is formed with a plurality of screw holes 515 penetrating both end faces 513A and 513B that can be used as attachment surfaces to the ejector plate. Mounting screws inserted into the corresponding through holes of the ejector plates into the respective screw holes 515 of the two base blocks 51 in a state in which either one of the end surfaces 513A, 513B of the two base blocks 51 is used as a mounting surface and in contact with the ejector plate. The slide base 5 is fixed to the ejector plate by fastening the mounting screws inserted into the respective screw holes 515 of the two base blocks 51 into the corresponding screw holes of the ejector plate.
　また、２つのベースブロック５１の対向面（互いに他のベースブロック５１側に向けられた面）５１２には、それぞれ、ピンホルダ２の移動方向に沿ったガイド溝５１１が形成されている。このガイド溝５１１は、他方のベースブロック５１との対向面５１２と隣り合う両側面５１７において開口している。このガイド溝５１１には、ベースブロック５１の側面５１７側からスライドプレート３が挿入され、スライド可能に収容される（図２（Ｃ）参照）。なお、図３には、一例として、ベースブロック５１の端面５１３Ａ，５１３Ｂに対してガイド溝５１１が傾斜している場合を示しているが、ベースブロック５１の端面５１３Ａ，５１３Ｂとガイド溝５１１との角度は、成型品のアンダーカット部の形状等に応じて適宜定められる。 Further, guide grooves 511 along the moving direction of the pin holder 2 are formed on the opposing surfaces 512 of the two base blocks 51 (surfaces facing each other toward the other base block 51). The guide groove 511 is open on both side surfaces 517 adjacent to the surface 512 facing the other base block 51. The slide plate 3 is inserted into the guide groove 511 from the side surface 517 side of the base block 51 and is slidably accommodated (see FIG. 2C). 3 shows a case where the guide grooves 511 are inclined with respect to the end surfaces 513A and 513B of the base block 51 as an example, but the end surfaces 513A and 513B of the base block 51 and the guide grooves 511 The angle is appropriately determined according to the shape of the undercut portion of the molded product.
　２つのベースブロック５１の両側面５１７には、それぞれ、他方のベースブロック５１側のネジ穴と対応する高さの位置にネジ穴（不図示）が形成されている。 Screw holes (not shown) are formed on both side surfaces 517 of the two base blocks 51 at positions corresponding to the screw holes on the other base block 51 side.
　２本のスペーサ５２には、２つのベースブロック５１の間に保持すべき間隔Ｔ１に応じた間隔で貫通穴５２２が形成されている。これらのスペーサ５２は、それぞれ、対向配置された２つのベースブロック５１の側面５１７間にかけ渡され、各貫通穴５２２に挿入された固定ネジ５３とベースブロック５１の側面５１７のネジ穴（不図示）との締結によって固定される。これにより、２つのベースブロック５１が、所定の間隔Ｔ１をおいた位置で固定される。 In the two spacers 52, through holes 522 are formed at intervals corresponding to the interval T1 to be held between the two base blocks 51. These spacers 52 are respectively spanned between the side surfaces 517 of the two base blocks 51 arranged to face each other, and the fixing screws 53 inserted into the respective through holes 522 and screw holes (not shown) on the side surfaces 517 of the base block 51. It is fixed by fastening with. As a result, the two base blocks 51 are fixed at positions having a predetermined interval T1.
　図４（Ａ）、（Ｂ）および（Ｃ）は、スライドプレート３の外観図、上面図および側面図であり、図４（Ｄ）は、図４（Ｂ）のＧ－Ｇ断面図である。 4A, 4B, and 4C are an external view, a top view, and a side view of the slide plate 3, and FIG. 4D is a GG cross-sectional view of FIG. 4B. .
　２枚のスライドプレート３は、１枚ずつ、２つのベースブロック５１の側面５１７側からガイド溝５１１に挿入され、ピンホルダ２を保持した状態で、２つのベースブロック５１のガイド溝５１１内にスライド可能に収容されている（図２（Ｃ）参照）。図示するように、各スライドプレート３の表面３１Ａ，３１Ｂのうち、少なくとも、ベースブロック５１のガイド溝５１１の溝底５１１２と摺動する一方の表面（図４においては３１Ａ）には、表面に露出する固体潤滑剤３３が埋め込まれている。同様に、各スライドプレート３の端面のうち、スライドベース５のガイド溝５１１の側壁５１１１と摺動する端面３１Ｃ，３１Ｄにも、表面に露出する固体潤滑剤３３が埋め込まれている。 The two slide plates 3 are inserted into the guide grooves 511 from the side surfaces 517 of the two base blocks 51 one by one, and can slide in the guide grooves 511 of the two base blocks 51 while holding the pin holder 2. (See FIG. 2C). As shown in the figure, at least one of the surfaces 31A and 31B of each slide plate 3 that slides with the groove bottom 5112 of the guide groove 511 of the base block 51 (31A in FIG. 4) is exposed to the surface. A solid lubricant 33 is embedded. Similarly, of the end surfaces of the slide plates 3, the end surfaces 31 </ b> C and 31 </ b> D that slide with the side walls 5111 of the guide grooves 511 of the slide base 5 are also embedded with the solid lubricant 33 exposed on the surface.
　また、各スライドプレート３には、一方の表面３１Ａから他方の表面３１Ｂに貫通したトラニオン挿入穴３２が形成されている。このトラニオン挿入穴３２には、フランジブッシュ４を介して、ピンホルダ２のトラニオン部２２が回転可能に挿入される（図２（Ｃ）参照）。 Further, each slide plate 3 is formed with a trunnion insertion hole 32 penetrating from one surface 31A to the other surface 31B. The trunnion portion 22 of the pin holder 2 is rotatably inserted into the trunnion insertion hole 32 via the flange bush 4 (see FIG. 2C).
　図５（Ａ）、（Ｂ）、（Ｃ）および（Ｄ）は、平行キー７が取り付けられたピンホルダ２の外観図、正面図、側面図および上面図であり、図５（Ｅ）は、図５（Ｄ）のＦ－Ｆ断面図である。 5A, 5B, 5C, and 5D are an external view, a front view, a side view, and a top view of the pin holder 2 to which the parallel key 7 is attached. FIG. FIG. 6 is a cross-sectional view taken along the line FF in FIG.
　ピンホルダ２は、スライドベース５の２つのベースブロック５１間に、一対のスライドプレート３を介して回転およびスライド可能な状態で収容されている。図示するように、このピンホルダ２は、傾斜ピン９の固定端部９１が固定されるブロック状のホルダ本体２１と、ホルダ本体２１の４つ側面２１１Ａ～２１１Ｄのうち、スライド方向に平行な、対向する２つの側面２１１Ａ，２１１Ｂに一体的に形成された１対のトラニオン部（回転軸）２２と、を備えており、ホルダ本体２１の幅ｔ１は、２つのベースブロック５１の間隔Ｔ１よりも狭く、トラニオン部２２の端面２２１間の距離ｔ２は、２つのベースブロック５１のガイド溝５１１の溝底５１１２間の距離Ｔ２よりも狭い。 The pin holder 2 is accommodated between the two base blocks 51 of the slide base 5 through a pair of slide plates 3 so as to be rotatable and slidable. As shown in the figure, the pin holder 2 has a block-shaped holder main body 21 to which the fixed end 91 of the inclined pin 9 is fixed, and the four side surfaces 211A to 211D of the holder main body 21 facing each other in parallel with the sliding direction. A pair of trunnion portions (rotating shafts) 22 formed integrally with the two side surfaces 211A and 211B, and the width t1 of the holder body 21 is narrower than the interval T1 between the two base blocks 51. The distance t2 between the end surfaces 221 of the trunnion part 22 is narrower than the distance T2 between the groove bottoms 5112 of the guide grooves 511 of the two base blocks 51.
　ホルダ本体２１には、成型機のキャビティ側に向けられる一方の端面（側面２１１Ａ～２１１Ｄ以外の面：以下、上面と呼ぶ）２１２Ａにピン挿入穴２１４が形成されるとともに、上面２１２Ａの反対側の面（底面）２１２Ｂに、ピン挿入穴２１４の底面２１４１を貫通する座繰り付きのボルト挿入穴２１５が形成されている。また、このホルダ本体２１の上面２１２Ａには、ピン挿入穴２１４の軸方向にピン挿入穴２１４の周面と一部接触する位置にキー溝２１６が形成されるとともに、トラニオン部２２を備える側面２１１Ａ，２１１Ｂ以外の側面２１１Ｃには、キー溝２１６の内壁を貫通するネジ挿入穴２１７が形成されている。 The holder main body 21 has a pin insertion hole 214 formed on one end face (a face other than the side faces 211A to 211D: hereinafter referred to as an upper face) 212A directed to the cavity side of the molding machine, and on the opposite side of the upper face 212A. A bolt insertion hole 215 with a countersink that penetrates the bottom surface 2141 of the pin insertion hole 214 is formed in the surface (bottom surface) 212B. Further, on the upper surface 212A of the holder body 21, a key groove 216 is formed at a position where it partially contacts the peripheral surface of the pin insertion hole 214 in the axial direction of the pin insertion hole 214, and a side surface 211A provided with a trunnion portion 22. , 211B, a screw insertion hole 217 that penetrates the inner wall of the keyway 216 is formed in the side surface 211C.
　傾斜ピン９の固定端部９１は、ホルダ本体２１の上面２１２Ａ側からピン挿入穴２１４に挿入され、六角穴付きボルト６は、ホルダ本体２１の底面２１２Ｂ側からボルト挿入穴２１５に挿入され、ピン挿入穴２１４内の傾斜ピン９の端面９３のネジ穴９４に締結される。 The fixed end 91 of the inclined pin 9 is inserted into the pin insertion hole 214 from the upper surface 212A side of the holder body 21, and the hexagon socket head bolt 6 is inserted into the bolt insertion hole 215 from the bottom surface 212B side of the holder body 21. The insertion hole 214 is fastened to the screw hole 94 in the end surface 93 of the inclined pin 9.
　平行キー７は、ホルダ本体２１の上面２１２Ａ側からキー溝２１６内に収容されており、固定ネジ８は、ホルダ本体２１の側面２１１Ｃ側からネジ挿入穴２１７に挿入され、キー溝２１６内の平行キー７のネジ穴７１に締結されている。このようにしてホルダ本体２１に固定された平行キー７は、ホルダ本体２１のピン挿入穴２１４に挿入される傾斜ピン９の切り欠き部９２に面接触し、これにより、ホルダ本体２１に対して所定の向きに傾斜ピン９を位置付けるとともに、ホルダ本体２１に対する傾斜ピン９の回転を阻止する。 The parallel key 7 is accommodated in the key groove 216 from the upper surface 212 </ b> A side of the holder main body 21, and the fixing screw 8 is inserted into the screw insertion hole 217 from the side surface 211 </ b> C side of the holder main body 21. Fastened to the screw hole 71 of the key 7. The parallel key 7 fixed to the holder main body 21 in this way comes into surface contact with the notch portion 92 of the inclined pin 9 inserted into the pin insertion hole 214 of the holder main body 21. The tilt pin 9 is positioned in a predetermined direction, and the tilt pin 9 is prevented from rotating with respect to the holder body 21.
　一対のトラニオン部２２は、ホルダ本体２１のピン挿入穴２１４を横切る共通の軸心Ｏを有している。前述したように、これらのトラニオン部２２は、フランジブッシュ４を介して、２つのスライドベース５のガイド溝５１１内にスライド可能に収容されたスライドプレート３のトラニオン挿入穴３２に回転可能に挿入されている。このため、ホルダ本体２１のピン挿入穴２１４に挿入された傾斜ピン９は、セッティング時には、ピンホルダ２の軸心Ｏ回りの回転により、アンダーカットの角度に応じて傾斜角度を調整可能であり、アンダーカット処理中には、エジェクタプレートの移動に伴い、２つのスライドベース５のガイド溝５１１に沿ってピンホルダ２とともに往復移動する。 The pair of trunnion portions 22 have a common axis O that crosses the pin insertion hole 214 of the holder main body 21. As described above, these trunnion portions 22 are rotatably inserted into the trunnion insertion holes 32 of the slide plate 3 slidably received in the guide grooves 511 of the two slide bases 5 via the flange bush 4. ing. For this reason, the tilt pin 9 inserted into the pin insertion hole 214 of the holder body 21 can be adjusted in tilt angle according to the undercut angle by rotation around the axis O of the pin holder 2 during setting. During the cutting process, along with the movement of the ejector plate, it reciprocates together with the pin holder 2 along the guide grooves 511 of the two slide bases 5.
　図６（Ａ）は、フランジブッシュ４の外観図であり、図６（Ｂ）、（Ｃ）および（Ｄ）は、フランジブッシュ４の正面図、上面図および底面図の拡大図であり、図６（Ｅ）は、図６（Ｃ）のＧ－Ｇ断面図、図６（Ｆ）は、図６（Ｅ）のＡ部拡大図である。 6A is an external view of the flange bush 4, and FIGS. 6B, 6C, and 6D are enlarged views of a front view, a top view, and a bottom view of the flange bush 4. FIG. 6 (E) is a cross-sectional view taken along the line GG in FIG. 6 (C), and FIG. 6 (F) is an enlarged view of a portion A in FIG. 6 (E).
　２つのフランジブッシュ４は、それぞれ、ピンホルダ２とスライドプレート３との間、より具体的には、トラニオン部２２の外周面２２２とトラニオン挿入穴３２の内周面３２１との間に介在する。図示するように、各フランジブッシュ４は、スライドプレート３のトラニオン挿入穴３２に挿入される円筒形のブッシュ本体４１と、ブッシュ本体４１の一端部４１４の外周から張り出した抜け止め用のフランジ４２と、を備えている。このフランジブッシュ４は、例えば、スライドプレート３のトラニオン挿入穴３２内に挿入された後、さらに、その内部にピンホルダ２のトラニオン部２２が圧入される。そして、スライドプレート３のトラニオン挿入穴３２への挿入時にトラニオン挿入穴３２の内径にあわせてブッシュ本体４１が変形できるように、または、ブッシュ本体４１へのピンホルダ２のトラニオン部２２の圧入時にトラニオン部２２の外径にあわせてブッシュ本体４１が変形できるように、各フランジブッシュ４には、軸方向全長にわたって（ブッシュ本体４１の他端部４１３からフランジ４２の外周面４２３にいたるまで）スリット４５が形成されている。 Each of the two flange bushings 4 is interposed between the pin holder 2 and the slide plate 3, more specifically, between the outer peripheral surface 222 of the trunnion portion 22 and the inner peripheral surface 321 of the trunnion insertion hole 32. As shown in the figure, each flange bush 4 includes a cylindrical bush body 41 inserted into the trunnion insertion hole 32 of the slide plate 3, and a retaining flange 42 protruding from the outer periphery of one end 414 of the bush body 41. It is equipped with. For example, after the flange bush 4 is inserted into the trunnion insertion hole 32 of the slide plate 3, the trunnion portion 22 of the pin holder 2 is further press-fitted therein. Then, the bush body 41 can be deformed in accordance with the inner diameter of the trunnion insertion hole 32 when the slide plate 3 is inserted into the trunnion insertion hole 32, or the trunnion portion when the trunnion portion 22 of the pin holder 2 is press-fitted into the bush body 41. Each flange bush 4 is provided with a slit 45 over the entire axial length (from the other end 413 of the bush body 41 to the outer peripheral surface 423 of the flange 42) so that the bush body 41 can be deformed in accordance with the outer diameter of the bush 22. Is formed.
　このフランジブッシュ４は、厚さ方向αに伸縮可能な金属メッシュ４６を基材とし、この基材を、金属メッシュの形成材料等よりも低摩擦係数の樹脂層４４で充填、被覆した複合材料により形成されている。具体的には、このフランジブッシュ４は、フランジブッシュ４の厚さ方向αに起伏する金属線部を有する金属メッシュ４６と、金属メッシュ４６を構成する各金属線部が部分的に一方の面４４１側から露出するように金属メッシュ４６を被覆した樹脂層４４と、を有している。このような金属メッシュ４６としては、好ましくは、例えば、所定方向のスリットの列を複数行形成したりん青銅製の金属プレートを、スリットの方向と交わる方向に引き伸ばすことにより形成された網目状のエキスパンドメタルが挙げられる。また、樹脂層４４は、好ましくは、例えば、四ふっ化エチレン樹脂を主成分として、これにフェノール樹脂及びポリイミド樹脂を含有してなる潤滑性組成物等で形成される。 The flange bush 4 is made of a composite material in which a metal mesh 46 that can be expanded and contracted in the thickness direction α is used as a base material, and the base material is filled and covered with a resin layer 44 having a lower friction coefficient than the metal mesh forming material. Is formed. Specifically, the flange bush 4 includes a metal mesh 46 having a metal wire portion that undulates in the thickness direction α of the flange bush 4, and each metal wire portion constituting the metal mesh 46 partially has one surface 441. And a resin layer 44 covered with a metal mesh 46 so as to be exposed from the side. As such a metal mesh 46, for example, a network-like expanded formed by stretching a metal plate made of phosphor bronze in which a plurality of rows of slits in a predetermined direction are formed in a direction crossing the direction of the slits, for example. Metal is mentioned. The resin layer 44 is preferably formed of, for example, a lubricating composition containing, as a main component, an ethylene tetrafluoride resin, and a phenol resin and a polyimide resin.
　本実施の形態においては、金属メッシュ４６の露出面４４１がブッシュ本体４１の外周面４１１、および、フランジ４２の上面（ブッシュ本体４１側の面）４２１を形成し、金属メッシュ４６が露出していない樹脂面４４２が、ブッシュ本体４１の内周面４１２、および、フランジ４２の底面（ブッシュ本体４１と反対側の面）４２２を形成している。このため、ピンホルダ２に接触するブッシュ本体４１の内周面４１２およびフランジ４２の底面４２２は、低摩擦係数の摺動面を形成しており、スライドプレート３に接触するブッシュ本体４１の外周面４１１およびフランジ４２の上面４２１は、ブッシュ本体４１の内周面４１２およびフランジ４２の底面４２２よりも高摩擦係数の摩擦面を形成している。 In the present embodiment, the exposed surface 441 of the metal mesh 46 forms the outer peripheral surface 411 of the bush main body 41 and the upper surface (surface on the bush main body 41 side) 421 of the flange 42, and the metal mesh 46 is not exposed. The resin surface 442 forms an inner peripheral surface 412 of the bush main body 41 and a bottom surface (surface opposite to the bush main body 41) 422 of the flange 42. For this reason, the inner peripheral surface 412 of the bush main body 41 that contacts the pin holder 2 and the bottom surface 422 of the flange 42 form a sliding surface with a low friction coefficient, and the outer peripheral surface 411 of the bush main body 41 that contacts the slide plate 3. The upper surface 421 of the flange 42 forms a friction surface having a higher friction coefficient than the inner peripheral surface 412 of the bush main body 41 and the bottom surface 422 of the flange 42.
　つぎに、このようなスライドコアガイドユニット１の組立て順について説明する。ただし、ここでは、予め組み立てられたスライドベース５を用いることとする。 Next, the assembly order of the slide core guide unit 1 will be described. However, here, the slide base 5 assembled in advance is used.
　図７（Ａ）は、スライドベース５へのピンホルダ２の組み込み手順を説明するための図である。 FIG. 7A is a diagram for explaining the procedure for assembling the pin holder 2 into the slide base 5.
　図示するように、２枚のスライドプレート３のトラニオン挿入穴３２に、それぞれ、固体潤滑剤３３が埋め込まれていない表面３１Ｂ側から、フランジブッシュ４のブッシュ本体４１を、フランジ４２の上面４２１がスライドプレート３の表面３１Ｂに接触するまで挿入する。上述したように、ブッシュ本体４１の外周面４１１は高摩擦係数の摩擦面となっているため、各フランジブッシュ４は、脱落することなくスライドプレート３のトラニオン挿入穴３２に保持される。 As shown in the figure, the bush main body 41 of the flange bush 4 and the upper surface 421 of the flange 42 slide from the surface 31B side where the solid lubricant 33 is not embedded in the trunnion insertion holes 32 of the two slide plates 3, respectively. Insert until the surface 31B of the plate 3 contacts. As described above, since the outer peripheral surface 411 of the bush body 41 is a friction surface having a high friction coefficient, each flange bush 4 is held in the trunnion insertion hole 32 of the slide plate 3 without dropping off.
　そして、ピンホルダ２の２つのトラニオン部２２を、それぞれ、各スライドプレート３のトラニオン挿入穴３２内に装着されたフランジブッシュ４のブッシュ本体４１内に、フランジ４２側から圧入する。このとき、ブッシュ本体４１が、スリット４５の幅の変化により、ピンホルダ２のトラニオン部２２の外形に合わせて変形するとともに、ブッシュ本体４１内の金属メッシュ４６が、ピンホルダ２のトラニオン部２２の外周面２２２とスライドプレート３のトラニオン挿入穴３２の内周面３２１とによって自身の厚さ方向α（ピンホルダ２のトラニオン部２２の外周面２２２とスライドプレート３のトラニオン挿入穴３２の内周面３２１との隙間の厚さ方向）に圧縮されて、ピンホルダ２のトラニオン部２２の外周面２２２とスライドプレート３のトラニオン挿入穴３２の内周面３２１との間の隙間に合わせて弾性変形する。 Then, the two trunnion portions 22 of the pin holder 2 are press-fitted from the flange 42 side into the bushing body 41 of the flange bushing 4 mounted in the trunnion insertion hole 32 of each slide plate 3. At this time, the bush main body 41 is deformed in accordance with the outer shape of the trunnion portion 22 of the pin holder 2 due to the change in the width of the slit 45, and the metal mesh 46 in the bush main body 41 is deformed to the outer peripheral surface of the trunnion portion 22 of the pin holder 2. 222 and the inner peripheral surface 321 of the trunnion insertion hole 32 of the slide plate 3 between the thickness direction α (the outer peripheral surface 222 of the trunnion portion 22 of the pin holder 2 and the inner peripheral surface 321 of the trunnion insertion hole 32 of the slide plate 3. Compressed in the thickness direction of the gap) and elastically deforms in accordance with the gap between the outer peripheral surface 222 of the trunnion portion 22 of the pin holder 2 and the inner peripheral surface 321 of the trunnion insertion hole 32 of the slide plate 3.
　このようにして、ピンホルダ２に２つのフランジブッシュ４および２枚のスライドプレート３を組み付けたら、この組み付け体１０をスライドベース５のベースブロック５１の間に収容する。具体的には、２本のスペーサ５２のうち、いずれか一方のスペーサ５２を２つのベースブロック５１から外してから、２つのベースブロック５１のガイド溝５１１にスライドプレート３が１枚ずつ挿入されるように、２つのベースブロック５１の間に組み付け体１０を挿入する。これにより、ピンホルダ２は、２枚のスライドプレート３に回転可能に支持された状態で、ガイド溝５１１に沿って移動可能に２つのベースブロック５１間に収容される。 Thus, when the two flange bushes 4 and the two slide plates 3 are assembled to the pin holder 2, the assembly 10 is accommodated between the base blocks 51 of the slide base 5. Specifically, one of the two spacers 52 is removed from the two base blocks 51 and then the slide plates 3 are inserted into the guide grooves 511 of the two base blocks 51 one by one. Thus, the assembly 10 is inserted between the two base blocks 51. Thereby, the pin holder 2 is accommodated between the two base blocks 51 so as to be movable along the guide groove 511 while being rotatably supported by the two slide plates 3.
　その後、外したスペーサ５２を、再度、２本の固定ネジ５３で２つのベースブロック５１に固定する。これにより、スライドコアガイドユニット１が完成する。 After that, the removed spacer 52 is again fixed to the two base blocks 51 with the two fixing screws 53. Thereby, the slide core guide unit 1 is completed.
　以上説明したように、本実施の形態に係るスライドコアガイドユニット１においては、厚さ方向αに伸縮可能な金属メッシュ４６を低摩擦係数の樹脂層４４で被覆した複合材料により形成されたフランジブッシュ４が、スライドプレート３のトラニオン挿入穴３２内に挿入され、このフランジブッシュ４内にピンホルダ２のトラニオン部２２が圧入される。このような構造によれば、フランジブッシュ４の樹脂層４４により、スライドプレート３に対してピンホルダ２がスムーズに回転可能になるとともに、ピンホルダ２のトラニオン部２２に溝加工等の機械加工を施してＯリングを装着しなくても、ピンホルダ２のトラニオン部２２の圧入によって圧縮された金属メッシュ４６の復元力により、スライドプレート３に対するピンホルダ２の、自重による回転が防止され、スライドベース５に対するピンホルダ２の姿勢を保持することができる。このため、スライドコアガイドユニット１の強度を低下させることなく、ピンホルダ２へ傾斜ピン９を装着する際の作業性の向上を実現することができる。また、ピンホルダ２のトラニオン部２２に対する溝加工等の機械加工工程が不要となった分だけ、スライドコアガイドユニット１の製造コストの低減を図ることができるとともに、強度の低下防止を図ることもできる。 As described above, in the slide core guide unit 1 according to the present embodiment, the flange bush formed by the composite material in which the metal mesh 46 that can be expanded and contracted in the thickness direction α is covered with the resin layer 44 having a low friction coefficient. 4 is inserted into the trunnion insertion hole 32 of the slide plate 3, and the trunnion portion 22 of the pin holder 2 is press-fitted into the flange bush 4. According to such a structure, the resin layer 44 of the flange bush 4 enables the pin holder 2 to rotate smoothly with respect to the slide plate 3, and the trunnion portion 22 of the pin holder 2 is subjected to machining such as grooving. Even without mounting the O-ring, the restoring force of the metal mesh 46 compressed by the press-fitting of the trunnion portion 22 of the pin holder 2 prevents rotation of the pin holder 2 with respect to the slide plate 3 due to its own weight, and the pin holder 2 with respect to the slide base 5 Can be maintained. For this reason, the workability | operativity at the time of attaching the inclination pin 9 to the pin holder 2 is realizable, without reducing the intensity | strength of the slide core guide unit 1. FIG. Further, it is possible to reduce the manufacturing cost of the slide core guide unit 1 and to prevent the strength from being lowered by the amount that the machining process such as the groove processing for the trunnion portion 22 of the pin holder 2 is not required. .
　また、本実施の形態においては、ブッシュ本体４１の外周面４１１およびフランジ４２の上面４２１側より多く、ブッシュ本体４１の内周面４１２およびフランジ４２の底面４２２側に樹脂層４４を多く露出させ、一方、ブッシュ本体４１の内周面４１２およびフランジ４２の底面４２２側より多く、ブッシュ本体４１の外周面４１１およびフランジ４２の上面４２１側に金属メッシュ４６を露出させることによって、ブッシュ本体４１とピンホルダ２との接触面（ブッシュ本体４１の内周面４１２およびフランジ４２の底面４２２）を低摩擦係数の摺動面とする一方、ブッシュ本体４１とスライドプレート３との接触面（ブッシュ本体４１の外周面４１１およびフランジ４２の上面４２１）を高摩擦係数の摩擦面としている。このため、フランジブッシュ４の高摩擦係数の摩擦面により、ピンホルダ２の自重による回転を防止可能な適度な摩擦力を発生させることができるとともに、フランジブッシュ４の低摩擦係数の摺動面により、作業者が適度な力を加えることでピンホルダ２のスムーズな回転を実現できる。これにより、傾斜ピン９を装着する場合のピンホルダ２の位置決めを容易にすることができる。例えば、ブッシュ本体４１の外周面４１１およびフランジ４２の上面４２１の面積に対する金属メッシュ４６の露出面積の割合を調整することによって、作業者がピンホルダ２の姿勢調整を行いやすい適度なトルクを発生させることができる。 In the present embodiment, more resin layer 44 is exposed on the inner peripheral surface 412 of the bush body 41 and the bottom surface 422 side of the flange 42 than the outer peripheral surface 411 of the bush body 41 and the upper surface 421 side of the flange 42. On the other hand, by exposing the metal mesh 46 to the outer peripheral surface 411 of the bush main body 41 and the upper surface 421 side of the flange 42 more than the inner peripheral surface 412 of the bush main body 41 and the bottom surface 422 side of the flange 42, the bush main body 41 and the pin holder 2. The contact surface (the inner peripheral surface 412 of the bush main body 41 and the bottom surface 422 of the flange 42) is a sliding surface having a low friction coefficient, while the contact surface between the bush main body 41 and the slide plate 3 (the outer peripheral surface of the bush main body 41). 411 and the upper surface 421) of the flange 42 are friction surfaces having a high friction coefficient. For this reason, the friction surface of the flange bush 4 with a high friction coefficient can generate an appropriate frictional force that can prevent rotation due to the weight of the pin holder 2, and the sliding surface of the flange bush 4 with a low friction coefficient Smooth rotation of the pin holder 2 can be realized by applying an appropriate force by the operator. Thereby, positioning of the pin holder 2 when attaching the inclined pin 9 can be facilitated. For example, by adjusting the ratio of the exposed area of the metal mesh 46 to the area of the outer peripheral surface 411 of the bushing body 41 and the upper surface 421 of the flange 42, an appropriate torque that allows the operator to easily adjust the attitude of the pin holder 2 is generated. Can do.
　また、２枚のスライドプレート３の一方の表面３１Ｂ内には、トラニオン挿入穴３２の周りを囲むフランジ４２の底面４２２によって、ピンホルダ２と摺動する低摩擦係数領域が形成される。このため、２枚のスライドプレート３の表面３１Ｂに固体潤滑剤３３が埋め込まれていなくても（あるいは、２枚のスライドプレート３の表面３１Ｂに埋め込む固体潤滑剤３３の数を少なくしても）、スライドプレート３の一方の表面３１Ｂをピンホルダ２側に向けることによっても、ピンホルダ２とスライドプレート３とのかじりを防止することができる。 Further, in one surface 31B of the two slide plates 3, a low friction coefficient region that slides with the pin holder 2 is formed by the bottom surface 422 of the flange 42 surrounding the trunnion insertion hole 32. Therefore, even if the solid lubricant 33 is not embedded in the surfaces 31B of the two slide plates 3 (or even if the number of solid lubricants 33 embedded in the surfaces 31B of the two slide plates 3 is reduced). The pin holder 2 and the slide plate 3 can also be prevented from being galled by directing the one surface 31B of the slide plate 3 toward the pin holder 2 side.
　また、スライドプレート３のトラニオン挿入穴３２内に装着したブッシュ本体４１に、このブッシュ本体４１の内径よりも大きな外径を有するピンホルダ２のトラニオン部２２を圧入する際、ブッシュ本体４１が、スリット４５の幅の変化により、ピンホルダ２のトラニオン部２２の外形に合わせて変形するとともに、ブッシュ本体４１の厚さは、金属メッシュ４６の弾性変形により、ピンホルダ２のトラニオン部２２とスライドプレート３のトラニオン挿入穴３２との隙間に合わせて変化する。したがって、ピンホルダ２のトラニオン部２２がスライドプレート３のトラニオン挿入穴３２内のブッシュ本体４１にクリアランスゼロで嵌め合わされるため、ピンホルダ２のガタつきを防止することができる。このようにクリアランスがゼロであるにもかかわらず、フランジブッシュ４のブッシュ本体４１の内周面４１２が、低摩擦係数の樹脂層４４で被覆された摺動面であり、また、弾性を有するエキスパンドメタルがブッシュ本体４１の基材として用いられているため、ピンホルダ２のトラニオン部２２をフランジブッシュ４のブッシュ本体４１にスムーズに挿入することができる。この場合、フランジブッシュ４のブッシュ本体４１内にピンホルダ２のトラニオン部２２を圧入してから、さらに、フランジブッシュ４付きのトラニオン部２２をスライドプレート３のトラニオン挿入穴３２に圧入してもよい。 Further, when the trunnion portion 22 of the pin holder 2 having an outer diameter larger than the inner diameter of the bush main body 41 is press-fitted into the bush main body 41 mounted in the trunnion insertion hole 32 of the slide plate 3, the bush main body 41 has the slit 45. The thickness of the bush body 41 is changed by the elastic deformation of the metal mesh 46 and the trunnion 22 of the pin holder 2 and the trunnion of the slide plate 3 are inserted. It changes according to the gap with the hole 32. Accordingly, since the trunnion portion 22 of the pin holder 2 is fitted into the bush body 41 in the trunnion insertion hole 32 of the slide plate 3 with zero clearance, rattling of the pin holder 2 can be prevented. Although the clearance is zero as described above, the inner peripheral surface 412 of the bushing body 41 of the flange bush 4 is a sliding surface covered with the resin layer 44 having a low coefficient of friction, and an expanded material having elasticity. Since the metal is used as the base material of the bush body 41, the trunnion portion 22 of the pin holder 2 can be smoothly inserted into the bush body 41 of the flange bush 4. In this case, the trunnion portion 22 of the pin holder 2 may be press-fitted into the bushing body 41 of the flange bushing 4, and the trunnion portion 22 with the flange bushing 4 may be further press-fitted into the trunnion insertion hole 32 of the slide plate 3.
　また、本実施の形態においては、金属メッシュ４６が樹脂層４４で被覆された複合材料でフランジブッシュ４を形成しているため、樹脂のみで形成されたブッシュと比較して、厚さが薄くても、耐摩耗性に優れる。このため、ピンホルダ２のトラニオン部２２の外周面２２２とスライドプレート３のトラニオン挿入穴３２の内周面３２１との間の隙間がわずかであっても、フランジブッシュ４を介在させることができる。ピンホルダ２のトラニオン部２２の外周面２２２とスライドプレート３のトラニオン挿入穴３２の内周面３２１との間にある程度の隙間が設けられている場合には、フランジブッシュ４に代えて、樹脂のみの一体成型で形成されたフランジブッシュを用いてもよい。このようなフランジブッシュには、ブッシュ本体の内周面およびフランジの底面、または、ブッシュ本体の外周面およびフランジの上面にセレーションを形成すればよい。 In the present embodiment, since the flange bush 4 is formed of a composite material in which the metal mesh 46 is covered with the resin layer 44, the thickness is smaller than that of the bush formed of resin alone. Also excellent in wear resistance. For this reason, even if the clearance gap between the outer peripheral surface 222 of the trunnion part 22 of the pin holder 2 and the inner peripheral surface 321 of the trunnion insertion hole 32 of the slide plate 3 is slight, the flange bush 4 can be interposed. When a certain amount of clearance is provided between the outer peripheral surface 222 of the trunnion portion 22 of the pin holder 2 and the inner peripheral surface 321 of the trunnion insertion hole 32 of the slide plate 3, only the resin is used instead of the flange bush 4. A flange bush formed by integral molding may be used. In such a flange bush, serrations may be formed on the inner peripheral surface of the bush main body and the bottom surface of the flange, or on the outer peripheral surface of the bush main body and the upper surface of the flange.
　ところで、本実施の形態においては、２枚のスライドプレート３のトラニオン挿入穴３２に、それぞれ、ベースブロック５１のガイド溝５１１の溝底５１１２と摺動する表面３１Ａの反対側の表面３１Ｂ側から、フランジブッシュ４のブッシュ本体４１を圧入しているが、これとは反対に、図７（Ｂ）に示すように、ベースブロック５１のガイド溝５１１の溝底５１１２と摺動する表面３１Ａ側から、フランジブッシュ４のブッシュ本体４１を圧入してもよい。このようにした場合、２枚のスライドプレート３の表面３１Ａ上には、トラニオン挿入穴３２の周りを囲むフランジ４２の底面４２２によって低摩擦係数領域が形成される。このように、ベースブロック５１側の表面３１Ａに、ベースブロック５１のガイド溝５１１の溝底５１１２と摺動する低摩擦係数領域が形成されるため、スライドプレート３がベースブロック５１のガイド溝５１１をよりスムーズに移動する。このため、かじりの発生を防止することができる。なお、このようにフランジブッシュ４のフランジ４２の底面４２２を利用してスライドプレート３の表面３１Ａ側に低摩擦係数領域を形成する場合、その分、２枚のスライドプレート３の表面３１Ａに埋め込まれる固体潤滑剤３３の数を少なくしてもよい。 By the way, in the present embodiment, the trunnion insertion holes 32 of the two slide plates 3 are respectively inserted from the surface 31B side opposite to the surface 31A sliding with the groove bottom 5112 of the guide groove 511 of the base block 51. The bush body 41 of the flange bush 4 is press-fitted. On the contrary, as shown in FIG. 7B, from the surface 31A side that slides with the groove bottom 5112 of the guide groove 511 of the base block 51, The bush body 41 of the flange bush 4 may be press-fitted. In this case, a low friction coefficient region is formed on the surfaces 31A of the two slide plates 3 by the bottom surface 422 of the flange 42 surrounding the trunnion insertion hole 32. Thus, since the low friction coefficient region which slides with the groove bottom 5112 of the guide groove 511 of the base block 51 is formed on the surface 31A on the base block 51 side, the slide plate 3 forms the guide groove 511 of the base block 51. Move more smoothly. For this reason, the occurrence of galling can be prevented. When the low friction coefficient region is formed on the surface 31A side of the slide plate 3 by using the bottom surface 422 of the flange 42 of the flange bush 4 as described above, it is embedded in the surface 31A of the two slide plates 3 correspondingly. The number of solid lubricants 33 may be reduced.
　本実施の形態においては、金属メッシュ４６の露出面４４１が、ブッシュ本体４１の外周面４１１およびフランジ４２の上面４２１を形成し、金属メッシュ４６が露出していない樹脂面４４２が、ブッシュ本体４１の内周面４１２およびフランジ４２の底面４２２を形成しているが、これとは逆に、金属メッシュ４６の露出面４４１がブッシュ本体４１の内周面４１２およびフランジ４２の底面４２２を形成し、金属メッシュ４６が露出していない樹脂面４４２がブッシュ本体４１の外周面４１１およびフランジ４２の上面４２１を形成するようにしてもよい。この場合には、フランジブッシュ４とピンホルダ２との間に適度な摩擦抵抗が発生するため、作業者がピンホルダ２の姿勢調整を行いやすい適度なトルクを発生させることができ、また、スライドプレート３のトラニオン挿入穴３２内でフランジブッシュ４がピンホルダ２のトラニオン部２２とともに回転するため、作業者が適度な力を加えることで、ピンホルダ２がスムーズに回転する。 In the present embodiment, the exposed surface 441 of the metal mesh 46 forms the outer peripheral surface 411 of the bush body 41 and the upper surface 421 of the flange 42, and the resin surface 442 where the metal mesh 46 is not exposed is formed on the bush body 41. Contrary to this, the exposed surface 441 of the metal mesh 46 forms the inner peripheral surface 412 of the bush body 41 and the bottom surface 422 of the flange 42, and the metal peripheral surface 412 and the bottom surface 422 of the flange 42 are formed. The resin surface 442 where the mesh 46 is not exposed may form the outer peripheral surface 411 of the bush body 41 and the upper surface 421 of the flange 42. In this case, since an appropriate frictional resistance is generated between the flange bush 4 and the pin holder 2, it is possible to generate an appropriate torque that allows an operator to easily adjust the posture of the pin holder 2, and the slide plate 3. Since the flange bush 4 rotates together with the trunnion portion 22 of the pin holder 2 in the trunnion insertion hole 32, the pin holder 2 rotates smoothly when the operator applies an appropriate force.
　また、本実施の形態においては、ブッシュ本体４１の一端部４１４の外周にのみフランジ４２を設けているが、図７（Ｃ）に示すように、ブッシュ本体４１の他端部４１３の外周にもフランジ４３を設けてもよい。このような構造にする場合、図６のフランジブッシュ４と同様な形状を有する片フランジ４２付きのフランジブッシュ４を用いる。ただし、ブッシュ本体４１の高さは、フランジブッシュ４の他端部４１３に形成されるフランジ４３の張り出し長さｓ１分だけスライドプレート３の板厚よりｓ２も大きくしてある。このようなフランジブッシュ４のブッシュ本体４１をスライドプレート３の一方の表面３１Ａ，３１Ｂ側からトラニオン挿入穴３２に挿入し、ブッシュ本体４１のスライドプレート３の他方の表面３１Ｂ，３１Ａ側から突き出した部分をピン等で押し広げる。これにより、ブッシュ本体４１の他端部４１３にもフランジ４３が形成され、スライドプレート３のトラニオン挿入穴３２に両フランジ４２，４３付きフランジブッシュ４が装着される。 Further, in the present embodiment, the flange 42 is provided only on the outer periphery of the one end 414 of the bush main body 41, but as shown in FIG. 7C, the flange 42 is also provided on the outer periphery of the other end 413 of the bush main body 41. A flange 43 may be provided. In the case of such a structure, the flange bush 4 with the single flange 42 having the same shape as the flange bush 4 of FIG. 6 is used. However, the height of the bush main body 41 is larger by s2 than the plate thickness of the slide plate 3 by the length s1 of the flange 43 formed at the other end 413 of the flange bush 4. The bushing body 41 of the flange bushing 4 is inserted into the trunnion insertion hole 32 from the one surface 31A, 31B side of the slide plate 3 and protrudes from the other surface 31B, 31A side of the sliding plate 3 of the bushing body 41. Press and hold with a pin. As a result, the flange 43 is also formed at the other end 413 of the bush body 41, and the flange bush 4 with both flanges 42, 43 is attached to the trunnion insertion hole 32 of the slide plate 3.
　なお、本発明は上記の実施の形態に限定されるものではなく、その要旨の範囲内で数々の変形が可能である。例えば、ピンホルダ２に対する傾斜ピン９の高さを調整するためのアジャストロッドおよびロックナットを備えるスライドコアガイドユニットに本発明を適用してもよい。 Note that the present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the gist. For example, the present invention may be applied to a slide core guide unit including an adjustment rod and a lock nut for adjusting the height of the inclined pin 9 with respect to the pin holder 2.
　本発明は、例えば、成形品のアンダーカット部を取り出すための傾斜ピンをピンホルダへ装着する際の作業性がよく、より低コストで製造可能な高強度なスライドコアガイドユニットを実現するための用途にも適用可能である。 The present invention is, for example, an application for realizing a high-strength slide core guide unit that can be manufactured at a lower cost with good workability when an inclined pin for taking out an undercut portion of a molded product is attached to a pin holder. It is also applicable to.
１：スライドコアガイドユニット、２：ピンホルダ、３：スライドプレート、４：フランジブッシュ、５：スライドベース、６：六角穴付きボルト、７：平行キー、８：平行キー７の固定ネジ、９：傾斜ピン、１０：組み付け体、２１：ホルダ本体、２２：トラニオン部、３１Ｃ，３１Ｄ：スライドプレート３の端面、３１Ａ，３１Ｂ：スライドプレート３の表面、３２：トラニオン挿入穴、３３：固体潤滑剤、４１：ブッシュ本体、４２，４３：フランジ、４４：樹脂層、４５：スリット、４６：金属メッシュ、５１：ベースブロック、５２：スペーサ、５３：スペーサ５２用の固定ネジ、７１：平行キー７のネジ穴、９１：傾斜ピン９の固定端部、９２：傾斜ピン９の切り欠き部、９３：傾斜ピン９の端面、９４：六角穴付きボルト６用のネジ穴、２１１Ａ～２１１Ｄ：ピンホルダ２の側面、２１２Ａ：ピンホルダ２の上面、２１２Ｂ：ピンホルダ２の底面、２１４：傾斜ピン９のピン挿入穴、２１５：六角穴付きボルト６のボルト挿入穴、２１６：キー溝、２１７：固定ネジ８用のネジ挿入穴、２２１：トラニオン部２２の端面、２２２：トラニオン部２２の外周面、３２１：トラニオン部２２の内周面、４１１：ブッシュ本体４１の外周面、４１２：ブッシュ本体４１の内周面、４１３、４１４：ブッシュ本体４１の端部、４２１：フランジ４２の上面、４２２：フランジ４２の底面、４２３：フランジ４２の外周面、４４１，４４２：樹脂層４４の表面、５１１：ガイド溝、５１２：ベースブロック５１の対向面、５１３Ａ，５１３Ｂ：ベースブロック５１の端面、５１５：ベースブロック５１のネジ穴、５１７：ベースブロック５１の側面、５２２：スペーサ５２の貫通穴、２１４１：ピン挿入穴２１４の底面、５１１２：ガイド溝５１１の溝底、５１１１：ガイド溝５１１の側壁 1: Slide core guide unit, 2: Pin holder, 3: Slide plate, 4: Flange bush, 5: Slide base, 6: Hex socket head bolt, 7: Parallel key, 8: Fixing screw for parallel key 7, 9: Inclination Pins, 10: assembly, 21: holder body, 22: trunnion part, 31C, 31D: end surface of slide plate 3, 31A, 31B: surface of slide plate 3, 32: trunnion insertion hole, 33: solid lubricant, 41 : Bush body, 42, 43: flange, 44: resin layer, 45: slit, 46: metal mesh, 51: base block, 52: spacer, 53: fixing screw for spacer 52, 71: screw hole for parallel key 7 91: Fixed end portion of the inclined pin 9 92: Notch portion of the inclined pin 9 93: End surface of the inclined pin 9 94: For the hexagon socket head bolt 6 Screw holes, 211A to 211D: side surface of pin holder 2, 212A: top surface of pin holder 2, 212B: bottom surface of pin holder 2, 214: pin insertion hole of inclined pin 9, 215: bolt insertion hole of hexagon socket head bolt 6, 216: Key groove, 217: Screw insertion hole for fixing screw 8, 221: End surface of trunnion portion 22, 222: Outer peripheral surface of trunnion portion 22, 321: Inner peripheral surface of trunnion portion 22, 411: Outer peripheral surface of bush main body 41, 412: Inner peripheral surface of the bush main body 41, 413, 414: End portion of the bush main body 41, 421: Upper surface of the flange 42, 422: Bottom surface of the flange 42, 423: Outer peripheral surface of the flange 42, 441, 442: Resin layer 44 511: Guide groove, 512: Opposing surface of the base block 51, 513A, 513B: End surface of the base block 51, 51 : Screw hole of the base block 51, 517: side surface of the base block 51, 522: through hole of the spacer 52, 2141: the bottom surface of the pin insertion hole 214, 5112: the groove bottom of the guide groove 511, 5111: the side wall of the guide groove 511

Claims (7)

  1. 　トラニオン部を有し、金型から成型品を取り出すための傾斜ピンを取り付けるためのピンホルダと、
    　前記トラニオン部が挿入されるトラニオン挿入穴が形成され、当該トラニオン挿入穴で前記トラニオン部を回転可能に支持しながら所定の方向に移動するスライドプレートと、
    　前記トラニオン部の外周面と前記トラニオン挿入穴の内周面との間に介在するブッシュと、を備え、
    　前記ブッシュは、
    　金属メッシュと、
    　前記金属メッシュを充填、被覆した樹脂層と、を有する
    　ことを特徴とするスライドコアガイドユニット用の組み付け体。     A pin holder for attaching an inclined pin for taking out a molded product from a mold having a trunnion part;
    A trunnion insertion hole into which the trunnion part is inserted is formed, and a slide plate that moves in a predetermined direction while rotatably supporting the trunnion part in the trunnion insertion hole;
    A bush interposed between the outer peripheral surface of the trunnion part and the inner peripheral surface of the trunnion insertion hole,
    The bush
    Metal mesh,
    An assembly for a slide core guide unit, comprising: a resin layer filled and covered with the metal mesh.
  2. 　請求項１に記載のスライドコアガイドユニット用の組み付け体であって、
    　前記金属メッシュは、エキスパンドメタルである
    　ことを特徴とするスライドコアガイドユニット用の組み付け体。     An assembly for the slide core guide unit according to claim 1,
    The assembly for a slide core guide unit, wherein the metal mesh is an expanded metal.
  3. 　請求項１または２に記載のスライドコアガイドユニット用の組み付け体であって、
    　前記樹脂層は、四ふっ化エチレン樹脂、フェノール樹脂およびポリイミド樹脂を含有する
    　ことを特徴とするスライドコアガイドユニット用の組み付け体。     An assembly for a slide core guide unit according to claim 1 or 2,
    The said resin layer contains a tetrafluoroethylene resin, a phenol resin, and a polyimide resin. The assembly for slide core guide units characterized by the above-mentioned.
  4. 　請求項１ないし３のいずれか一項に記載のスライドコアガイドユニット用の組み付け体であって、
    　前記金属メッシュは、
    　前記トラニオン部の外周面と前記トラニオン挿入穴の内周面との間で圧縮され、前記トラニオン部の外周面と前記トラニオン挿入穴の内周面との隙間の厚さ方向に伸縮可能である
    　ことを特徴とするスライドコアガイドユニット用の組み付け体。     An assembly for a slide core guide unit according to any one of claims 1 to 3,
    The metal mesh is
    It is compressed between the outer peripheral surface of the trunnion portion and the inner peripheral surface of the trunnion insertion hole, and can be expanded and contracted in the thickness direction of the gap between the outer peripheral surface of the trunnion portion and the inner peripheral surface of the trunnion insertion hole. An assembly for a slide core guide unit characterized by
  5. 　請求項１ないし４のいずれか１項に記載のスライドコアガイドユニット用の組み付け体であって、
    　前記金属メッシュは、
    　前記樹脂層の少なくとも厚さ方向の一方の面側から露出して、前記ピンホルダまたは前記スライドプレートと接触する
    　ことを特徴とするスライドコアガイドユニット用の組み付け体。     An assembly for a slide core guide unit according to any one of claims 1 to 4,
    The metal mesh is
    An assembly for a slide core guide unit, wherein the assembly is exposed from at least one surface side in the thickness direction of the resin layer and contacts the pin holder or the slide plate.
  6. 　請求項１ないし５のいずれか１項に記載のスライドコアガイドユニット用の組み付け体であって、
    　前記ブッシュは、
    　前記トラニオン挿入穴内に挿入され、かつ、前記トラニオン部が挿入されるブッシュ本体と、
    　少なくとも前記ブッシュ本体の一方の端部の外周から張り出したフランジと、をさらに有する
    　ことを特徴とするスライドコアガイドユニット用の組み付け体。     An assembly for a slide core guide unit according to any one of claims 1 to 5,
    The bush
    A bush body that is inserted into the trunnion insertion hole and into which the trunnion portion is inserted;
    An assembly for a slide core guide unit, further comprising: a flange protruding from an outer periphery of at least one end of the bush main body.
  7. 　請求項１ないし６のいずれかに記載のスライドコアガイドユニット用の組み付け体と、
    　前記スライドプレートがスライド可能に挿入され、当該スライドプレートを所定の方向に案内するガイド溝が形成されたスライドベースと、を備える
    　ことを特徴とするスライドコアガイドユニット。     An assembly for the slide core guide unit according to any one of claims 1 to 6,
    A slide core guide unit comprising: a slide base into which the slide plate is slidably inserted and a guide groove is formed to guide the slide plate in a predetermined direction.
PCT/JP2012/076603 2011-10-26 2012-10-15 Assembly for slide core guide unit, and slide core guide unit WO2013061812A1 (en)

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KR101811023B1 (en) * 2016-05-12 2017-12-20 주식회사 엠피코리아 Oil-free slide units of mold
CN105922520A (en) * 2016-05-25 2016-09-07 宁波跃飞模具有限公司 Simple angle ejector and gliding foot device of injection mold

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JPS6479417A (en) * 1987-09-18 1989-03-24 Oiles Industry Co Ltd Sliding material and manufacture thereof
JPH04285317A (en) * 1991-03-13 1992-10-09 Oiles Ind Co Ltd Oilless bearing and its manufacture
JPH04321813A (en) * 1991-04-17 1992-11-11 Oiles Ind Co Ltd Bearing device and its manufacture
JP2001079898A (en) * 1999-09-14 2001-03-27 Oiles Ind Co Ltd Slide core guide unit
JP2003191292A (en) * 2001-12-26 2003-07-08 Tokushima Showa Mold & Engineering Co Ltd Slide core guide unit and injection molding mold mechanism

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JP3358487B2 (en) * 1997-03-28 2002-12-16 三菱自動車工業株式会社 Mold equipment for resin molding
JP3846448B2 (en) * 2002-04-19 2006-11-15 通則 竹元 Slide core unit
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JPS6479417A (en) * 1987-09-18 1989-03-24 Oiles Industry Co Ltd Sliding material and manufacture thereof
JPH04285317A (en) * 1991-03-13 1992-10-09 Oiles Ind Co Ltd Oilless bearing and its manufacture
JPH04321813A (en) * 1991-04-17 1992-11-11 Oiles Ind Co Ltd Bearing device and its manufacture
JP2001079898A (en) * 1999-09-14 2001-03-27 Oiles Ind Co Ltd Slide core guide unit
JP2003191292A (en) * 2001-12-26 2003-07-08 Tokushima Showa Mold & Engineering Co Ltd Slide core guide unit and injection molding mold mechanism

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