JP3937837B2 - Slide core guide unit and injection mold mechanism using the same - Google Patents

Slide core guide unit and injection mold mechanism using the same Download PDF

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Publication number
JP3937837B2
JP3937837B2 JP2001395403A JP2001395403A JP3937837B2 JP 3937837 B2 JP3937837 B2 JP 3937837B2 JP 2001395403 A JP2001395403 A JP 2001395403A JP 2001395403 A JP2001395403 A JP 2001395403A JP 3937837 B2 JP3937837 B2 JP 3937837B2
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JP
Japan
Prior art keywords
pin
holder
plate
slide
base
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Active
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JP2001395403A
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Japanese (ja)
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JP2003191292A (en
Inventor
幸治 上村
修 小梯
雅治 深田
Original Assignee
オイレス工業株式会社
徳島昭和精機株式会社
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Priority to JP2001395403A priority Critical patent/JP3937837B2/en
Publication of JP2003191292A publication Critical patent/JP2003191292A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • B29C45/44Removing or ejecting moulded articles for undercut articles
    • B29C45/4435Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector means

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slide core guide used for guiding the movement of a slide core through an inclined pin that is inclined with respect to a moving direction of an ejector plate and penetrates a receiving plate in an undercut process by an injection mold mechanism. The present invention relates to a unit and an injection mold mechanism using the unit.
[0002]
[Problems to be solved by the invention]
A slide core guide unit described in Japanese Patent No. 2523093 includes a base having a pair of guide grooves facing each other, and a pair having a bearing hole that is slidably disposed in each guide groove of the base. And a pin holder having a shaft fitted in each bearing hole of the slide plate. Such a slide core guide unit is used in an injection mold mechanism by fixing its base to an ejector plate and connecting its pin holder to one end of an inclined pin.
[0003]
In the slide core guide unit, the movement of the slide core is guided through an inclined pin that is inclined with respect to the moving direction of the ejector plate and slidably penetrates the insertion hole of the receiving plate. The movement of the plate is transmitted to the slide core via the pin holder and the inclined pin.
[0004]
By the way, when the pin holder is moved together with the movement of the ejector plate, the pin holder gives a bending moment to the inclined pin extending obliquely with respect to the movement of the ejector plate. This bending moment becomes a local pressing force to the fixed receiving plate through which the tilt pin penetrates, and generates a large resistance force against the movement of the tilt pin in the oblique direction. In addition to being unable to move smoothly in an oblique direction, the above-mentioned local pressing force causes wear on the backing plate or inclined pin, and bending moment causes breakage of the inclined pin, requiring early replacement of parts. There is a risk of doing.
[0005]
In addition, in order to smoothly move the inclined pin in the oblique direction with respect to the fixed receiving plate, a sliding member such as a bush is usually interposed between the receiving plate and the inclined pin in the insertion hole of the receiving plate. However, when a local pressing force due to the bending moment as described above is repeatedly applied to the sliding member, local wear of the sliding member occurs, and even if such a sliding member is interposed, the above and Similarly, it is impossible to smoothly move the inclined pin in the oblique direction, and there is a possibility that early sliding member replacement is required.
[0006]
The present invention has been made in view of the above points, and the object of the present invention is to reduce the bending moment in the movement of the ejector plate and to move the tilt pin in an oblique direction. Sliding core guide unit capable of smoothly moving an inclined pin in an oblique direction over a long period without causing local wear, and eliminating an accidental breakage of the inclined pin, and an injection mold using the same To provide a mechanism.
[0007]
[Means for Solving the Problems]
The slide core guide unit according to the first aspect of the present invention is configured to move the slide core through an inclined pin that is inclined with respect to the moving direction of the ejector plate and penetrates the receiving plate in the undercut processing by the injection mold mechanism. And has a pair of guide grooves opposed to each other, a base fixed to the ejector plate, and each guide groove of the base with respect to the direction of movement of the ejector plate. The slide plate is slidably arranged in the intersecting direction and a holder rotatably supported by the slide plate via a shaft. Here, the shaft includes the slide plate and the holder. The holder is fixed to one of them, and the holder is provided to move the ejector plate and a holding hole for receiving one end of the inclined pin in order to fix and hold one end of the inclined pin. And an insertion hole through which the guide rod is slidably inserted so as to be guided and moved in a direction parallel to the inclination direction of the inclined pin by the guide rod which is inclined and arranged so as to be parallel to the inclined pin. The holding hole and the insertion hole are formed in the holder itself.
[0008]
According to the slide core guide unit of the first aspect, the holder is slidably inserted into the holding hole for receiving one end of the inclined pin and the guide rod so as to fix and hold the one end of the inclined pin. By inserting a guide rod with one end into the base and the other end into the receiving plate, through the insertion hole of the holder in which one end of the inclined pin is fixed and held by the holding hole. In the movement of the ejector plate, the force in the moving direction of the ejector plate can be transmitted to the holder through the slide plate and the shaft, and the force in the direction intersecting the moving direction of the ejector plate can be guided by the guide rod to move the holder. As a result, it is possible to move one end portion of the inclined pin with these resultant forces, and to reduce the bending moment in the movement of the ejector plate. Results that can be moved pin obliquely, on which can be moved smoothly inclined pin over a long obliquely without causing local wear may eliminate breakage accident of the inclined pin.
[0009]
In the slide core guide unit of the second aspect of the present invention, in the slide core guide unit of the first aspect, a bush is fitted in the insertion hole in the holder, and the guide rod is inserted through the bush. It is designed to pass through the hole.
[0010]
According to the slide core guide unit of the second aspect, the guide movement of the holder by the guide rod can be performed very smoothly by the bush, and the force in the direction intersecting the movement direction of the ejector plate is effectively applied to the holder. Can be generated.
[0011]
To hold the inclined pin on the holder, for example, a protrusion is provided on the holder, and a recess is provided on one end of the inclined pin to fit the protrusion of the holder. However, instead of this, as in the slide core guide unit according to the third aspect of the present invention, a holding for receiving one end of the inclined pin is possible. Using a holder having a hole, one end of the inclined pin may be received in the holding hole of the holder to hold the end of the inclined pin on the holder.
[0012]
In the slide core guide unit of the fourth aspect of the present invention, in the slide core guide unit of the third aspect, the shaft is rotatable with respect to the slide plate around the one end of the inclined pin. It is fixed to either the slide plate or the holder.
[0013]
According to the slide core guide unit of the fourth aspect, since the reaction force at one end of the tilt pin can be received by the shaft without causing the holder to rotate, smooth movement of the tilt pin can be ensured.
[0014]
In the slide core guide unit according to the fifth aspect of the present invention, in the slide core guide unit according to the third or fourth aspect, the axis is slid so that the axis is substantially perpendicular to the axis of the holding hole. It is fixed to one of the plate and the holder.
[0015]
According to the slide core guide unit of the fifth aspect, similar to the slide core guide unit of the fourth aspect, the reaction force at one end of the inclined pin can be received by the shaft without causing the holder to rotate. The smooth movement of the inclined pin can be ensured in the same manner as or more than the slide core guide unit of the fourth aspect.
[0016]
An injection mold mechanism according to the present invention includes a slide core guide unit according to any one of the aspects described above, a fixed base, a fixed receiving plate disposed at an interval with respect to the base, a base and a receiving base. The ejector plate movably disposed between the plate and the receiving plate is inclined with respect to the moving direction of the ejector plate, and one end portion is received in the holding hole and the one end portion is fixed to the holder. The inclined pin that is held, the slide core that is held at the other end of the inclined pin, and through the insertion hole of the holder, are inclined so as to be parallel to the inclined pin, with one end at the base and the other end Each having a guide rod held by a receiving plate, wherein the base is fixed to the ejector plate.
[0017]
According to such an injection mold mechanism according to the present invention, the holder receives and fixes and holds one end portion of the inclined pin in its holding hole, and is inclined so as to be parallel to the inclined pin, and the one end is Since the guide rods, the other ends of which are respectively held by the receiving plates, pass through the insertion holes of the holder, the force in the direction of movement of the ejector plate is applied to the slide plate and the shaft in the movement of the ejector plate as described above. In addition to being able to transmit to the holder via the guide rod, a force in the direction intersecting the direction of movement of the ejector plate can be generated in the holder by the guide movement by the guide rod. As a result, the inclined pin can be moved in an oblique direction by reducing the bending moment in the movement of the ejector plate, so that local wear does not occur. On can be moved smoothly inclined pin over a long obliquely, it may eliminate breakage accident of the inclined pin.
[0018]
Next, the present invention and its embodiments will be described with reference to preferred examples shown in the drawings. The present invention is not limited to these examples.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
1 to 5, the slide core guide unit 1 of the present example has a pair of guide grooves 2 and 3 facing each other, and a base 5 fixed to an ejector plate 4 (see FIG. 7). Each of the guide grooves 2 and 3 of the base 5 is slidably arranged in a direction B that intersects the moving direction A of the ejector plate 4, and in this example is perpendicular to the moving direction A, and has bearing holes 6 and 7, respectively. The slide plates 8 and 9 and the shafts 10 and 11 inserted in the bearing holes 6 and 7 of the slide plates 8 and 9 are fixed, and the slide plates 8 and 9 are connected to the slide plates 8 and 9 in the R direction via the shafts 10 and 11. And a holder 12 supported rotatably.
[0020]
The base 5 has a pair of base members 21 and 22 each having a U-shaped cross section and arranged to face each other, and the opposing inner side surfaces 23 and 24 of the pair of base members 21 and 22 are respectively provided. In addition, guide grooves 2 and 3 are formed.
[0021]
Each of the base members 21 and 22 has a plurality of insertion holes 25 for inserting bolts (not shown) for fixing the base members 21 and 22 to the ejector plate 4. Each of the base members 21 and 22 is formed with a plurality of positioning insertion holes 26 with the insertion holes 25 therebetween.
[0022]
Each of the slide plates 8 and 9 having the bearing holes 6 and 7 has a rectangular shape or a strip shape, and each of the slide plates 8 and 9 faces the base members 21 and 22 and the holder 12 respectively. In order to obtain a smooth sliding between them, a plurality of circular solid lubricant bodies 27 are dispersed and exposed and embedded in the surface. Instead of embedding the solid lubricant 27, the slide plates 8 and 9 are formed by a multi-layer sliding member having a steel plate and a sintered layer and face the base members 21 and 22 and the holder 12. Such slide plates 8 and 9 may be used such that a sintered layer is arranged on the side.
[0023]
More specifically, each of the shafts 10 and 11 has an axis 33 so that the holder 12 is rotatable in the R direction with respect to the slide plates 8 and 9 about the one end 32 of the inclined pin 31. In this example, the holding holes 34 are integrally fixed to both side surfaces 36 and 37 of the holder 12 having a substantially rectangular parallelepiped shape so as to be substantially orthogonal to the axis 35 of the holding hole 34. Instead of fixing the shafts 10 and 11 to the side surfaces 36 and 37 of the holder 12, respectively, the shafts 10 and 11 may be integrally fixed to the slide plates 8 and 9, respectively. 6 and 7 are provided on both side surfaces 36 and 37 of the holder 12, respectively.
[0024]
It is mounted on the base 5 via the shafts 10 and 11 and the slide plates 8 and 9 so as to be rotatable in the R direction and intersect with the moving direction A of the ejector plate 4, and in this example, can be moved directly in the orthogonal direction B. The holder 12 is parallel to the inclined pin 31 in the movement of the ejector plate 4 in the A direction and the holding hole 34 for receiving the one end portion 32 of the inclined pin 31 in order to fix and hold the one end portion 32 of the inclined pin 31. In order to be guided and moved in a direction parallel to the tilt direction of the tilt pin 31 by the guide rod 41 arranged so as to be tilted in this manner, the guide rod 41 is slidably inserted, The holding hole 34 and the insertion hole 42 are formed in the holder 12 itself.
[0025]
A bush 43 is fitted into the holder 12 in the insertion hole 42, and the guide rod 41 is slidable in a direction parallel to the tilt direction of the tilt pin 31 with the bush 43 interposed therebetween. Thus, the insertion hole 42 is inserted.
[0026]
The inclined pin 31 inserted into the holding hole 34 is engaged with the one end 32 by a notch in the one end 32 and is centered on the axis 35 by a key member 46 fixed to the holder 12 with a screw 45. As will not rotate.
[0027]
As shown in FIG. 7, the slide core guide unit 1 has an inclined pin 31 that is inclined with respect to the moving direction A of the ejector plate 4 and penetrates the receiving plate 52 in the undercut process by the injection mold mechanism 51. It is used to guide the movement of the slide core 53 via
[0028]
The injection mold mechanism 51 includes a movable template 60, a fixed base 61, a fixed receiving plate 52 that is spaced from the base 61, and a base 61 and a receiving plate 52. The above-described slide core guide unit in which the ejector plate 4 movably arranged in the A direction and the base members 21 and 22 of the base 5 are fixed to the ejector plate 4 in the holes 62 of the ejector plate 4 by bolts. 1 and is inclined with respect to the moving direction A of the ejector plate 4 and penetrates the receiving plate 52, and the one end 32 is inserted and received in the holding hole 34 of the holder 12 and is fixedly held by the holder 12. The inclined pin 31, the slide core 53 held by the other end 63 of the inclined pin 31, and the bush 43 are interposed to pass through the insertion hole 42 of the holder 12 so as to be parallel to the inclined pin 31. Inclined, one end 64 is provided with a base 61 via a holder 65 and the other end 66 is provided with a guide rod 41 held by a receiving plate 52 via a holder 67. A bolt 68 is screwed into one end portion 32 of the pin 31, and the bolt 68 prevents the one end portion 32 from coming out of the holding hole 34.
[0029]
A holder 65 having a pin 71 engaged with one end 64 of the guide rod 41 is fixed to the base 61 by a screw 72, and a holder having a pin 73 engaged with the other end 66 of the guide rod 41. 67 is fixed to the receiving plate 52 with screws 74.
[0030]
In this example, the injection mold mechanism 51 molds a product 76 having an undercut portion 75, and the inclined pin 31 is inclined with respect to the moving direction A of the ejector plate 4 and the guide bush. The support plate 52 is slidably disposed through the support plate 52.
[0031]
At the time of demolding of the product 76 having the undercut portion 75 after molding, the movable side mold plate 60 is moved in the A direction from the state shown in FIG. 7, and the ejector plate 4 is moved in the same direction in synchronism with this. By moving the slide core guide unit 1 in the A direction, the inclined pin 31 slides with respect to the receiving plate 52 via the guide bush 77, and the slide core 53 is separated from the receiving plate 52. In this separation, as shown in FIG. 8, the other end portion 63 of the inclined pin 31 moves in the B direction, the slide core 53 is separated from the undercut portion 75, and the product 76 can be taken out. When the other end portion 63 of the tilt pin 31 moves in the B direction, the slide core guide unit 1 moves the one end portion 32 of the tilt pin 31 in the B direction with respect to the ejector plate 4, and moves the slide plates 8 and 9 of the holder 12. Guidance is provided by movement in the B direction along the guide grooves 2 and 3 interposed.
[0032]
According to the slide core guide unit 1, the holder 12 has the holding hole 34 for receiving the one end portion 32 of the inclined pin 31 and the guide rod so that the one end portion 32 of the inclined pin 31 is fixedly held by the holding hole 34. Since it has the insertion hole 42 through which 41 is slidably inserted, it is inclined with respect to the moving direction A of the ejector plate 4 and penetrates the receiving plate 52 like the injection mold mechanism 51. One end 32 of the inclined pin 31 is fixedly held in the holding hole 34, and the guide rod 41 having one end 64 held by the base 61 and the other end 66 held by the receiving plate 52 is passed through the insertion hole 42 of the holder 12. Thus, in the movement of the ejector plate 4 in the A direction, the force in the moving direction A of the ejector plate 4 can be transmitted to the holder 12 via the slide plates 8 and 9 and the shafts 10 and 11, and the movement of the ejector plate 4 The force in the direction B intersecting the direction A can be generated in the holder 12 by the guide movement of the holder 12 by the guide rod 41. As a result, the one end portion 32 of the inclined pin 31 can be formed with the resultant force as shown in FIG. 8, and can be moved so as to be pushed up or pulled down. Thus, in the movement of the ejector plate 4, the bending moment of the inclined pin 31 having the guide bush 77 as a fulcrum is reduced to move the inclined pin 31. As a result of being able to move in an oblique direction, it is possible to smoothly move the inclined pin in an oblique direction over a long period without causing local wear on the guide bush 77. It can be lost.
[0033]
In the slide core guide unit 1, a bush 43 is fitted into the holder 12 in the insertion hole 42, and the guide rod 41 penetrates the insertion hole through the bush 43. The guide movement of the holder 12 by the rod 41 can be performed very smoothly, and the force in the direction B intersecting the movement direction A of the ejector plate 4 can be effectively generated in the holder 12. More specifically, the shaft center 33 of the shafts 10 and 11 is substantially the same as the shaft center 35 of the holding hole 34 so as to be rotatable with respect to the slide plates 8 and 9 around the one end portion 32 of the inclined pin 31. Since the shafts 10 and 11 are fixed to the holder 12 so as to be orthogonal to each other, the rotation from the one end portion 32 of the inclined pin 31 is prevented without causing the holder 12 to rotate. In order to be acceptable in shaft 10 and 11, it can be secured movement smooth inclined pin 31.
[0034]
In the above example, the slide plates 8 and 9 are slidable in the direction B perpendicular to the movement direction A of the ejector plate 4, but the present invention is not limited to this, and the movement direction of the ejector plate 4. You may make it slidable in diagonal directions other than the direction B orthogonal to A. FIG.
[0035]
【The invention's effect】
According to the present invention, it is possible to move the inclined pin in an oblique direction by reducing the bending moment in the movement of the ejector plate. It is possible to provide a slide core guide unit that can be moved in an oblique direction and can eliminate an accidental breakage of an inclined pin, and an injection mold mechanism using the slide core guide unit.
[Brief description of the drawings]
FIG. 1 is a perspective view of an example of a preferred embodiment of the present invention.
FIG. 2 is an exploded perspective view of a part of the example shown in FIG.
FIG. 3 is a plan view of the example shown in FIG.
4 is a cross-sectional view taken along line IV-IV shown in FIG.
5 is a cross-sectional view taken along line VV shown in FIG.
6 is an operation explanatory diagram of the example shown in FIG. 1. FIG.
FIG. 7 is an explanatory diagram of an example in which the example shown in FIG. 1 is used in an injection mold mechanism.
FIG. 8 is an operation explanatory diagram of the example shown in FIG. 7;
[Explanation of symbols]
1 Slide core guide unit 2, 3 Guide groove 4 Ejector plate 5 Base 6, 7 Bearing hole 8, 9 Slide plate 10, 11 Shaft 12 Holder

Claims (5)

  1.   A slide core guide unit used for guiding the movement of the slide core through an inclined pin that is inclined with respect to the movement direction of the ejector plate and penetrates the receiving plate in the undercut processing by the injection mold mechanism. And a pair of guide grooves opposed to each other, a base fixed to the ejector plate, and each guide groove of the base are slidably arranged in a direction intersecting the moving direction of the ejector plate. A slide plate and a holder rotatably supported by the slide plate via a shaft. The shaft is fixed to either the slide plate or the holder. In order to fix and hold one end of the inclined pin, the holding hole for receiving the one end of the inclined pin and the ejector plate are inclined so as to be parallel to the inclined pin. A guide rod arranged in a direction parallel to the tilting direction of the tilting pin, and the holding hole and the insertion hole are holders. Slide core guide unit formed on itself.
  2.   The slide core guide unit according to claim 1, wherein a bush is fitted into the holder in the insertion hole, and the guide rod is inserted through the insertion hole with the bush interposed.
  3.   The slide core according to claim 1 or 2, wherein the shaft is fixed to one of the slide plate and the holder so that the holder is rotatable with respect to the slide plate around one end of the inclined pin. Guide unit.
  4.   The slide according to any one of claims 1 to 3, wherein the shaft is fixed to one of the slide plate and the holder so that the shaft center is substantially perpendicular to the shaft center of the holding hole. Core guide unit.
  5.   The slide core guide unit according to any one of claims 1 to 4, a fixed base, a fixed receiving plate disposed at a distance from the base, and a space between the base and the receiving plate And an ejector plate movably disposed on the ejector plate and penetrating the receiving plate inclined with respect to the moving direction of the ejector plate, and having one end portion received in the holding hole and fixed to the holder by the one end portion. The tilt pin, the slide core held at the other end of the tilt pin, and the insertion hole of the holder are tilted to be parallel to the tilt pin, with one end serving as a base and the other end serving as a receiving plate. An injection mold mechanism in which the guide rods are respectively held and the base is fixed to the ejector plate.
JP2001395403A 2001-12-26 2001-12-26 Slide core guide unit and injection mold mechanism using the same Active JP3937837B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001395403A JP3937837B2 (en) 2001-12-26 2001-12-26 Slide core guide unit and injection mold mechanism using the same

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JP3937837B2 true JP3937837B2 (en) 2007-06-27

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4613543B2 (en) * 2004-07-29 2011-01-19 オイレス工業株式会社 Slide core guide device and injection mold mechanism having the same
KR100613892B1 (en) * 2005-01-28 2006-08-22 (주) 부광테크 core unit guide block assembly
JP3133912U (en) * 2007-05-17 2007-07-26 株式会社 タカオ設計事務所 Ejector device
KR100906960B1 (en) 2008-03-13 2009-07-10 박제현 Minute hole structure ease assemble and dis-assemble and extracted minute hole
JP5757845B2 (en) * 2011-10-26 2015-08-05 オイレス工業株式会社 Assembly for slide core guide unit and slide core guide unit
JP2014046602A (en) * 2012-08-31 2014-03-17 Oiles Ind Co Ltd Slide core guide unit
DE202015106461U1 (en) * 2015-11-27 2015-12-04 David Erz Guiding device for casting tool
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
US10220556B2 (en) * 2016-06-13 2019-03-05 Progressive Components International Corporation Molded undercut release apparatus

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