WO2018003329A1 - Moule de formage par centrifugation et procédé de fabrication de corps cylindrique - Google Patents

Moule de formage par centrifugation et procédé de fabrication de corps cylindrique Download PDF

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Publication number
WO2018003329A1
WO2018003329A1 PCT/JP2017/018350 JP2017018350W WO2018003329A1 WO 2018003329 A1 WO2018003329 A1 WO 2018003329A1 JP 2017018350 W JP2017018350 W JP 2017018350W WO 2018003329 A1 WO2018003329 A1 WO 2018003329A1
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WO
WIPO (PCT)
Prior art keywords
cylindrical body
mold
centrifugal
centrifugal mold
lid
Prior art date
Application number
PCT/JP2017/018350
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English (en)
Japanese (ja)
Inventor
泰 栄木
Original Assignee
クオドラントポリペンコジャパン株式会社
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 クオドラントポリペンコジャパン株式会社 filed Critical クオドラントポリペンコジャパン株式会社
Priority to CN201780039229.8A priority Critical patent/CN109476052A/zh
Priority to KR1020187037463A priority patent/KR20190025845A/ko
Publication of WO2018003329A1 publication Critical patent/WO2018003329A1/fr

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    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/38—Moulds, cores or other substrates
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/36—Feeding the material on to the mould, core or other substrate
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/52—Measuring, controlling or regulating

Definitions

  • the present invention relates to a centrifugal mold, and more particularly, to a centrifugal mold having a tubular mold body for molding a cylindrical body and a closing member detachably provided at both ends of the mold body.
  • the present invention also relates to a method of manufacturing a cylindrical body using this centrifugal mold.
  • a raw material resin is injected into a centrifugal mold composed of a tubular mold body and a lid that closes the opening of the mold body, and the mold is rotated about an axis.
  • a centrifugal molding method in which a raw material resin is cured while being allowed to occur (see, for example, Patent Document 1).
  • FIG. 23 a shows the centrifugal mold described in Patent Document 1.
  • the centrifugal mold 10 includes a tubular mold body 11 and a pair of lids 12 that cover both end openings of the mold body 11. With one lid attached to the mold body, the raw material resin is injected into the mold body 11, and the other lid is attached to close both ends of the mold body. Next, a cylindrical molded product along the inner peripheral surface of the mold body 11 is obtained by rotating the mold 10 at a high speed around the mold axis.
  • the lock device 21 for fixing the lid 12 to the mold body 11 can be tilted by a lock claw support portion 22 provided at three intervals on the outer periphery of the lid 12 at equal intervals, and a pin 23 on each lock claw support portion. It has a lock claw 24 attached and a lock spring 25 for urging the lock claw 24 in the lock direction, and a locking part 26 provided at the tip of the lock claw 24 is provided with a mold body.
  • the lid 12 can be fixed in a state of covering the opening of the mold body 11 by engaging with the outer edges of the flanges 13 provided at both ends of the mold 11.
  • the rear end portion of the lock claw 24 protrudes from the outer surface of the lid.
  • a seal plate 32 is provided on the inner surface of the lid 12 to cover the tubular portion opening 31 of the mold body 11.
  • the seal plate 32 is supported by three guide bolts 33 penetrating the lid 12 so as to be movable in the mold axial direction, and in the direction of the tubular portion opening 31 by a pressure contact spring 34 sheathed on the guide bolt 33. It is energized towards.
  • a ring-shaped groove 35 provided on the outer peripheral side of the seal plate 32 is provided with a ring-shaped seal material 35 that contacts the end surface of the mold body 11.
  • the pressure contact spring 34 pushes the seal plate 32 to the mold body end surface with a strong force. Press. Thereby, the tubular portion opening 31 is reliably sealed, and at the same time, the locking state between the locking portion 26 and the flange 13 is held together with the lock spring 25.
  • FIG. 23 b shows the cylindrical body 1 formed by this centrifugal molding and removed from the mold 10.
  • the inner peripheral edge 1i of the inner hole 1h in the end surface 1a of the cylindrical body 1 does not become a circle with a predetermined diameter or the inner peripheral edge 1i deviates from the predetermined position due to eccentricity of the centrifugal mold.
  • An object of the present invention is to provide a centrifugal mold that can easily find the shape irregularity of the inner peripheral edge of the end face of a cylindrical body, and a method of manufacturing a cylindrical body using the same.
  • the centrifugal mold of the present invention is a centrifugal mold having a tubular mold body for centrifugally molding a cylindrical body and a closing member for closing an opening of the mold body, and the centrifugal molding of the closing member
  • a concave portion or a convex portion for forming a convex portion or a concave portion on the end surface of the molded cylindrical body is provided concentrically on the inner surface of the closing member facing the inside of the mold.
  • the concave portion or the convex portion on the inner surface of the closing member is provided in the vicinity of the inner peripheral edge of the cylindrical body.
  • the concave portion or the convex portion on the inner surface of the closing member is provided along the inner peripheral edge of the cylindrical body.
  • the cross-sectional ridge line of the convex portion or the concave portion of the closing member is configured by a curve.
  • the convex portion or the concave portion of the blocking member is provided to inspect the inner diameter accuracy of the cylindrical body.
  • a plurality of convex portions or concave portions of the closing member are provided at intervals in the circumferential direction.
  • the convex portion or concave portion of the closing member is provided continuously in the circumferential direction.
  • the method for producing a cylindrical body of the present invention includes a step of molding a cylindrical body having a concave or convex portion formed on an end surface thereof by pouring a raw material resin into the centrifugal mold of the present invention and then performing demolding, and then demolding.
  • the amount of raw material resin injected matches the target inner diameter of the cylindrical body that is centrifugally molded along the inner peripheral surface of the mold body. Amount.
  • the convex portion or the concave portion formed by the concave portion or the convex portion exists concentrically.
  • the distance between the concentric circle formed by the formed convex portion or concave portion and the circular shape formed by the inner diameter of the cylindrical body is constant.
  • it can be instantaneously determined visually that the interval between the concentric circle formed by the formed convex part or concave part and the circular shape formed by the inner diameter of the cylindrical body is within the allowable range (tolerance) of the regular product. .
  • the tolerance range can be set according to the size and application of the target cylinder.
  • the centrifugal mold is eccentric and the cylinder is not centrifugally molded into a regular shape, the distance from the circular shape formed by the inner diameter of the cylindrical body is non-uniform, or the formed convex or concave portions are non-uniform. It will chip or disappear.
  • the distance between the concentric circle formed by the formed convexity or concave portion and the circular shape formed by the inner diameter of the cylindrical body is too large outside the allowable range (tolerance) of the regular product. It is possible to confirm whether the cylindrical body is in a regular shape by confirming that the concentric circle formed by the convex part or the concave part is broken or unevenly formed. it can. That is, the concave portion or the convex portion provided on the inner surface of the closing member is for confirming the position and inner diameter accuracy of the hollow portion of the cylindrical body. According to this, even if it does not cut
  • the present invention immediately after taking out the cylindrical molded body from the centrifugal mold, it is possible to easily detect equipment troubles in the centrifugal molding rotating device (for example, the rotating pin is worn out, the rotating shaft is shifted). Thereby, the production efficiency can be effectively improved, and in particular, when the centrifugal molding and rotating apparatus is automated, the production efficiency can be dramatically improved.
  • the convex portion or the concave portion is preferably provided so as to be formed in the vicinity of the inner peripheral edge of the cylindrical body. According to this, when the end surface of the cylindrical body is visually observed, the uniformity of the interval between the convex portion or the concave portion and the inner peripheral edge can be easily discriminated instantaneously. You can immediately notice whether the accuracy is within the tolerance (tolerance) of the regular product. Therefore, it is preferable that the convex part or the concave part touches the inner peripheral edge. When the convex portion or the concave portion does not touch the inner peripheral edge, the shortest length from the inner peripheral edge of the convex portion or the concave portion is, for example, 0 to 6.0 (mm), and further, 0 to 2.5 ( mm).
  • a convex part or the concave portion is in contact with the inner peripheral edge.
  • a convex part is provided in a cylindrical body end surface, and a recessed part is provided in the closure member inner surface of a centrifugal mold.
  • the cross-sectional ridge line of the convex part or the concave part of the closing member is constituted by a curve.
  • the inner periphery is concentric with the outer periphery of the cylinder, but when the diameter is smaller than the normal shape, the end surface has a convex or concave portion that is separated from the inner periphery, so the cylinder has a normal diameter. Can be easily confirmed.
  • the inner peripheral edge is concentric with the outer peripheral edge of the cylindrical body, when the diameter is larger than the normal shape, there is no convex or concave portion, so it is easy to make the cylindrical body larger than the normal diameter. Can be confirmed.
  • the resin material used in the present invention is not particularly limited, and various materials such as an anion-polymerizable polyamide such as polyamide obtained by a monomer casting method and a two-component curable urethane resin are applicable. Of these, anionic polymerizable polyamides are preferably used for reasons such as mechanical strength.
  • the cylindrical body formed by the method of the present invention is suitable for producing a resin gear using this.
  • a cylindrical body for manufacturing a resin gear is required to have extremely high inner diameter accuracy.
  • the cylindrical body is cut into a ring shape in a predetermined thickness to obtain a ring body.
  • a metal hub is fitted into the inner hole of the ring body, and the outer periphery of the ring body is cut to form teeth.
  • the manufactured resin gear Since the inner hole of this ring body is concentric (coaxial) having the desired inner diameter with the outer periphery of the ring body, the manufactured resin gear has very good shape accuracy.
  • FIG. 1A is a cross-sectional view of a centrifugal mold according to an embodiment, and shows a cross section along the axial direction on one end side in the axial direction of the centrifugal mold.
  • FIG. 1B is a perspective view of one end side in the axial direction of a cylindrical body formed by a centrifugal molding method using the centrifugal mold of FIG. 1A.
  • FIG. 1c is a cross-sectional view taken along the line Ic-Ic of FIG. 1b.
  • FIG. 1d is a view taken along the arrow Id in FIG. 1c.
  • FIG. 2a is a perspective view of one end side in the axial direction of a cylindrical body formed by a centrifugal molding method using a centrifugal mold according to another embodiment.
  • 2b is a sectional view taken along line IIb-IIb of FIG. 2a.
  • FIG. 3A is a perspective view of one end side in the axial direction of a cylindrical body formed by a centrifugal molding method using a centrifugal mold according to another embodiment.
  • 3b is a sectional view taken along line IIIb-IIIb of FIG. 3a.
  • FIG. 4A is a cross-sectional view of one end side in the axial direction of a cylindrical body formed by a centrifugal molding method using a centrifugal mold according to another embodiment, and FIG.
  • FIG. 4B is a view taken along arrow IVb in FIG. 4A.
  • FIG. 5a is a cross-sectional view of one end side in the axial direction of a cylindrical body formed by a centrifugal molding method using a centrifugal mold according to another embodiment
  • FIG. 5b is a view taken along the arrow Vb in FIG. 5a.
  • 6a is a cross-sectional view of one end side in the axial direction of a cylindrical body formed by a centrifugal molding method using a centrifugal mold according to another embodiment
  • FIG. 6b is a view taken along the arrow VIb in FIG. 6a.
  • FIG. 7A is a cross-sectional view of one end side in the axial direction of a cylindrical body formed by a centrifugal forming method using a centrifugal mold according to another embodiment
  • FIG. 7B is a view taken along the arrow VIIb in FIG. 7A
  • FIG. 8A is a cross-sectional view of one end side in the axial direction of a cylindrical body formed by a centrifugal molding method using a centrifugal mold according to another embodiment
  • FIG. 8B is a view taken along the arrow VIIIb in FIG. 8A
  • 9A is a cross-sectional view of one end side in the axial direction of a cylindrical body formed by a centrifugal molding method using a centrifugal mold according to another embodiment
  • FIG. 9A is a cross-sectional view of one end side in the axial direction of a cylindrical body formed by a centrifugal molding method using a centrifugal mold according to another embodiment
  • FIG. 9A is a cross-sectional
  • FIG. 9B is a view taken along the arrow IXb in FIG. 9A.
  • FIG. 10A is an end view of one end side in the axial direction of a cylindrical body formed by a centrifugal molding method using a centrifugal mold according to another embodiment.
  • 10b is a cross-sectional view taken along line Xb-Xb of FIG. 10a.
  • FIG. 10c is an end view of a cylindrical body molded with a small amount of resin injection
  • FIG. 10d is a cross-sectional view taken along line Xd-Xd in FIG. 10c.
  • FIG. 11 a is a perspective view of one end side in the axial direction of a cylindrical body formed by a centrifugal molding method using a centrifugal mold according to another embodiment.
  • FIG. 11b is a cross-sectional view taken along the line XIb-XIb of FIG. 11a.
  • FIG. 12 a is a perspective view of one end side in the axial direction of a cylindrical body formed by a centrifugal molding method using a centrifugal mold according to another embodiment.
  • 12b is a cross-sectional view taken along line XIIb-XIIb of FIG. 12a.
  • FIG. 13 a is a perspective view of one end side in the axial direction of a cylindrical body formed by a centrifugal molding method using a centrifugal mold according to another embodiment.
  • 13b is a cross-sectional view taken along line XIIIb-XIIIb of FIG. 13a.
  • FIG. 17a is a cross-sectional view of a molded body centrifugally molded using the centrifugal mold of FIG. 15, and FIG. 17b is an enlarged view of a portion XVIIb of FIG. 17a.
  • FIG. 17a is a cross-sectional view of a molded body centrifugally molded using the centrifugal mold of FIG. 15
  • FIG. 17b is an enlarged view of a portion XVIIb of FIG. 17a.
  • FIG. 17a is a cross-sectional view of a molded body centrifugally molded using the centrifugal mold of FIG. 15
  • FIG. 17b is an enlarged view of a portion XVIIb of FIG. 17a.
  • FIG. 19A is a cross-sectional view of a cylindrical body formed by the centrifugal mold of FIG. 8, and shows a cross section along the axial direction on one end side in the axial direction of the cylindrical body.
  • FIG. 19b is an enlarged view of the XIXb portion of FIG. 19a.
  • FIG. 20a is a cross-sectional view of a centrifugal mold according to another embodiment, and shows a cross section along the axial direction on one end side in the axial direction of the centrifugal mold.
  • 20b is a cross-sectional view of a part of a hollow molded body that is centrifugally molded using the centrifugal mold of FIG. 20a. It is sectional drawing of the centrifugal mold which concerns on another embodiment.
  • FIG. 23a is a sectional view of one end side of a centrifugal mold according to a conventional example.
  • FIG. 23b is a perspective view of one end side in the axial direction of the cylindrical body formed by the centrifugal molding method using the centrifugal mold of FIG. 23a. It is a bottom view of the sealing plate of the centrifugal mold of FIG. It is sectional drawing of the centrifugal mold which concerns on another embodiment. It is a bottom view of the sealing plate of the centrifugal mold of FIG.
  • FIG. 1a to 1d show a first embodiment
  • FIG. 1a shows one end side of a centrifugal mold 10A
  • FIGS. 1b to 1d show a cylindrical body 1A centrifugally molded using this centrifugal mold 10A. Is shown.
  • FIG. 24 is a bottom view of the sealing plate 32A of the centrifugal mold 10A.
  • a plurality of concave portions 32a are provided at intervals along the planned formation position of the inner peripheral edge 1i of the cylindrical body 1A in the centrifugal mold inner surface of the seal plate 32A.
  • the recess 32a is hemispherical in this embodiment.
  • Other configurations of the centrifugal mold 10A are the same as those of the centrifugal mold 10 of FIG. 23 except that the lock mechanism is omitted, and the same portions are denoted by the same reference numerals. Although eight recesses 32a are provided, the present invention is not limited to this.
  • the injection amount of the raw material resin is such that the inner peripheral edge 1i of the end surface 1a of the cylindrical body 1A that is centrifugally molded along the inner peripheral surface of the mold body 11 is the recess 32a. It is set as the quantity which agree
  • the centrifugally formed cylindrical body 1A has the convex portion 2 formed by the concave portion 32a along the inner peripheral edge 1i of the end surface 1a.
  • the convex part 2 is a quarter hemisphere obtained by cleaving the hemisphere into two in the diameter direction, and the cleaved part is along the inner peripheral edge 1i of the cylindrical body 1A.
  • a predetermined number (eight in FIG. 1b) of convex portions 2 are provided along the inner peripheral edge 1i. Convex part 2 exists.
  • the inner peripheral edge 1i is concentric with the outer peripheral edge of the cylindrical body 1A, when the diameter is smaller than the regular shape, all the convex portions 2 are separated from the inner peripheral edge 1i, so that the cylindrical body 1A It can be confirmed that is not a regular shape or a regular inner diameter.
  • the inner peripheral edge 1i is concentric with the outer peripheral edge of the cylindrical body 1A, when the diameter is larger than the normal shape, all the convex portions 2 do not exist, so the cylindrical body 1A has a normal shape or a normal inner diameter. You can be sure that it is not.
  • the cylindrical body 1A is not in the normal shape or the normal inner diameter. I can confirm that.
  • a hemispherical recess 32a is provided in the sealing plate 32 of the centrifugal mold 10A, and approximately half of the recess 32a is filled with the raw resin so that the formed protrusion 2 is divided into four parts. It is hemispherical.
  • the shape of the recess 32a may be a semi-elliptical sphere, a cylinder, a prism, or the like. Note that it is preferable that the concave portion has a shape that expands toward the inlet side, such as a hemispherical shape or a semi-elliptical spherical shape, because demolding is easy.
  • FIGS. 2a to 2c show a cylindrical body 1B in which the convex portions 2B are hemispherical.
  • the number of convex parts 2B is not limited to the figure.
  • the convex portion 2B is disposed along the inner peripheral edge 1i.
  • the other configurations of FIGS. 2a to 2c are the same as those of FIGS. 1b to 1d.
  • FIGS. 3a to 3c show a cylindrical body 1C in which the convex portion 2C is cut out from a part of the hemisphere (about 1/4 in FIGS. 3a to 3c).
  • the convex part 2C is arranged so that the notched part is along the inner peripheral edge 1i of the cylindrical body 1C.
  • the number of the convex portions 2C is not limited to the illustration.
  • Other configurations of FIGS. 3a to 3c are the same as those of FIGS. 1b to 1d.
  • FIG. 4a and 4b show a cylindrical body 1D in which the convex portion 2D is a quadrant ellipsoid.
  • the convex portion 2D is arranged so that the major axis direction of the ellipse is the radial direction of the cylindrical body 1D and the minor axis direction of the ellipse is along the inner peripheral edge 1i of the cylindrical body 1D.
  • the other structure of FIG. 4a, 4b is the same as that of FIG. 1b, 1c.
  • FIG. 5a and 5b show a cylindrical body 1E having a convex portion 2E having a shape obtained by cutting out a part of a semi-elliptical sphere.
  • the convex portion 2E is arranged so that the major axis direction of the ellipse is the radial direction of the cylindrical body 1E, and the notch surface is along the inner peripheral edge 1i of the cylindrical body 1E.
  • the other structure of FIG. 5a, 5b is the same as that of FIG. 1b, 1c.
  • FIG. 6a and 6b show a cylindrical body 1F having a convex portion 2F having a shape obtained by cutting out a part of a quadrangular pyramid.
  • the quadrangular pyramid has a long diagonal line and a short diagonal line.
  • the quadrangular pyramid has a rhombus shape in plan view (as seen in FIG. 6b, the front face of the end face 1a), and is cut out at one end in the long diagonal direction. It has a shape.
  • the convex portion 2F is arranged so that the long diagonal direction is the radial direction of the cylindrical body 1F and the notched portion is along the inner peripheral edge 1i of the cylindrical body 1F.
  • the other structure of FIG. 6a, 6b is the same as that of FIG. 1b, 1c.
  • FIG. 7a and 7b show a cylindrical body 1G having a semiconical convex portion 2G.
  • the convex part 2G has a shape in which the cone is cut in half in the radial direction.
  • the convex portion 2G is arranged so that the cleaved portion follows the inner peripheral edge 1i of the cylindrical body 1G.
  • the other structure of FIG. 7a, 7b is the same as that of FIG. 1b, 1c.
  • FIG. 8a and 8b show a cylindrical body 1H having a semi-cylindrical convex portion 2H.
  • the convex portion 2H has a shape in which a cylinder is cut in half in the radial direction.
  • the convex portion 2H is arranged so that the cleaved portion follows the inner peripheral edge 1i of the cylindrical body 1H.
  • the other structure of FIG. 8a, 8b is the same as that of FIG. 1b, 1c.
  • FIGS. 9a and 9b show a cylindrical body 1I having a convex portion 2I having a substantially teardrop shape in plan view.
  • the convex portion 2I has a shape in plan view in which one end side is curved and the other end side is elongated in a streamline toward the end portion, and the one end side is cleaved in a direction orthogonal to the longitudinal direction.
  • the convex portion 2I is arranged such that the cleaved portion is along the inner peripheral edge 1i of the cylindrical body 1I.
  • the other configurations of FIGS. 9a and 9b are the same as those of FIGS. 1b and 1c.
  • the convex portion is disposed along the inner peripheral edge of the cylindrical body, but a convex portion may be provided in addition to the inner peripheral edge.
  • FIGS. 10a and 10b show a cylindrical body 1J according to the example.
  • the convex part 2 is provided in the inner periphery of the end surface 1a of the cylindrical body 1J shape
  • the convex portion 2 has the same shape as that shown in FIGS. 1b to 1d.
  • a plurality of convex portions 2J are provided at equal intervals in the circumferential direction between the inner peripheral edge and the outer peripheral edge of the end surface 1a of the cylindrical body 1J.
  • Each convex portion 2J is located at an equal radius with respect to the axial center of the cylindrical body 1J.
  • FIG. 10c and 10d show a cylindrical body 1J ′ formed by using the same centrifugal mold 10A ′ with a smaller amount of resin injection than in the case of FIGS. 10a and 10b.
  • FIG. 10 and 10d are sectional views taken along line Xd-Xd in FIG. 10c.
  • This cylindrical body 1J ′ has only a plurality of convex portions 2J on its end face.
  • FIG. 25 is a sectional view of a centrifugal mold 10A ′ for molding the cylindrical bodies 1J and 1J ′
  • FIG. 26 is a bottom view of the seal plate 32.
  • the convex portion 2J is formed by the concave portion 32a ′.
  • the other configuration of the centrifugal mold 10A ′ is the same as that of the centrifugal mold 10A, and the same reference numerals indicate the same parts.
  • the cylindrical body 1J shown in FIGS. 10a and 10b By comparing the cylindrical body 1J shown in FIGS. 10a and 10b with the cylindrical body 1J ′ shown in FIGS. 10c and 10d, it can be easily determined whether or not the formed cylindrical body has a regular shape. For example, when the cylindrical body 1J shown in FIGS. 10a and 10b has a regular shape, the cylindrical body 1J ′ shown in FIGS. 10c and 10d does not include the convex portion 2, so that it is determined as a defective product out of the tolerance range. Is done. Furthermore, even if the cylindrical body 1J is centrifugally molded into a regular shape, the convex portions 2 have a regular shape, or there is a regular number, or how far the convex portion 2 is from the inner periphery. It is possible to easily determine how much error has occurred by visually confirming whether the error has occurred.
  • the cylindrical body 1J ′ shown in FIGS. 10c and 10d has a regular shape
  • the cylindrical body 1J shown in FIGS. 10a and 10b has a convex portion 2 and thus is out of the tolerance range. It is immediately judged that the product is non-defective. Furthermore, even for the cylindrical body 1J ′ that does not have the convex portion 2, the distance between the convex portion 2J and the inner peripheral edge 1i is confirmed, or the shape and number of the convex portions 2J are visually confirmed. Therefore, it can be easily determined how much error has occurred.
  • the cylindrical body that has been centrifugally molded using the centrifugal mold of the present invention is within a tolerance range. Furthermore, if the outer diameter of the cylindrical body is the same, even if the inner diameter of the target cylindrical body is different, it is possible to manufacture with the same mold by changing the range of resin injection amount and tolerance. it can.
  • the shape of the convex portions 2 and 2J may be any of the convex portions of FIGS. 1 to 9, or may be other than these.
  • the protrusions 2 and 2A to 2J are independent protrusions.
  • the protrusions formed on the concentric circles are not necessarily one shape, and may be two or more shapes.
  • the convex portion 2a is continuous over the entire circumference of the inner peripheral edge 1i, but may be interrupted at one or more points in the middle. Further, the curve continuous over the entire circumference of the inner peripheral edge 1i may be uneven.
  • the protrusion 2a is formed of a protrusion along the inner periphery 1i, and the protrusion 2a provided between the inner periphery 1i and the outer periphery is formed of a concentric protrusion.
  • You may provide convex part 2a '.
  • Other ridges may be provided so as to form triple or more concentric circles.
  • the cylindrical bodies 1A to 1L of FIGS. 1a to 12b convex portions are formed, but by providing convex portions (not shown) instead of the concave portions 32a on the sealing plate 32A of the centrifugal mold, the cylindrical body of FIG.
  • the recess 5 may be provided along the inner peripheral edge 1i of the end face 1a as in 1M. Also in this case, when the inner peripheral edge 1i is decentered or has a larger or smaller diameter than the regular shape, at least a part of the recess 5 does not exist or is separated from the inner peripheral edge 1i. It can be confirmed that the body 1M does not have a regular shape.
  • the concave portion 5 has an independent concave hole shape, but may be a concave strip extending along the inner peripheral edge 1i.
  • the concave stripe may circulate around the entire circumference of the inner peripheral edge 1i, or may be interrupted at one or more points in the middle. You may provide a recessed part in double or multiple concentric form like the protruding item
  • FIG. 14 shows a centrifugal mold 10A ′ in which a concave portion 32a is provided in the seal plate 32 ′ in the centrifugal mold 10 of FIG.
  • Other configurations of the centrifugal mold 10A ' are the same as those of the centrifugal mold 10A shown in FIG. 23, and the same reference numerals denote the same parts.
  • the end surfaces 1a of the cylindrical bodies 1A to 1M formed by centrifugation are perpendicular to the axial direction of the cylindrical bodies 1A to 1M.
  • the tapered surface 1a may be inclined such that the inner peripheral edge 1i side is closer to the center in the longitudinal direction of the cylindrical body.
  • FIG. 15 shows a centrifugal mold 10B for molding a cylindrical body 1N having such a tapered end face 1a.
  • the seal plate 32 ⁇ / b> C is provided on the inner surface of the lid 12 so as to cover the tubular portion opening 31 of the mold body 11.
  • the seal plate 32C is supported by three guide bolts 33 penetrating the lid 12 so as to be movable in the axial direction of the mold, and in the direction of the tubular portion opening 31 by a pressure contact spring 34 sheathed on the guide bolt 33. It is energized towards.
  • the pressure spring 34 holds the seal plate 32 ⁇ / b> C with a strong force on the mold body 11. Press against the end face. Thereby, the tubular portion opening 31 is reliably sealed, and at the same time, the locking state between the locking portion 26 and the flange 13 is held together with the lock spring 25.
  • a disc-shaped packing 41 for sealing the end surface of the tubular portion opening 31 is provided on the inner surface of the sealing plate 32C, and a disc shape having an outer diameter corresponding to the diameter of the tubular portion opening 31 is provided on the inner surface side of the packing 41.
  • the metal inner lid 42 is provided.
  • the packing 41 is provided so as to cover the entire inner surface of the seal plate 32C.
  • a silicon-based packing material 41a having an appropriate cushioning property is disposed on the seal plate 32C side, and a fluororesin-based packing material 41b having an excellent heat resistance is disposed on the mold body 11 side, thereby providing a sufficient seal. Sufficient heat resistance can be obtained while obtaining properties.
  • the metal inner lid 42 has a substantially disc shape that is inserted into the end of the tubular portion of the mold body 11 and has a conical surface whose center projects in the mold inner direction.
  • the metal inner lid 42 is fixed by a bolt 43 penetrating the center of the seal plate 32C so that the packing 41 is sandwiched between the inner surface of the seal plate 32C.
  • the inner lid 42 has a plurality of recesses 42a. Each recess 42a is located at an equal radius with respect to the central axis of the inner lid 42 (scheduled formation position of the inner peripheral edge 1i). That is, the distance from each recessed part 42a to the inner peripheral surface of the mold main body 11 is equal.
  • the raw material resin is injected in an amount such that the inner peripheral surface of the centrifugally molded cylindrical body matches the edge of the recess 42a (the edge on the center side of the inner lid 42).
  • FIG. 16 shows a state in which the raw material resin R is injected into the centrifugal mold 10B, and the centrifugal mold 10C is rotated around its axis to perform centrifugal molding.
  • FIG. A cylindrical body 1N immediately after being removed from the mold 10C is shown.
  • FIG. 17b is an enlarged view of the XVIIb portion of FIG. 17a. As shown in FIGS. 17a and 17b, the end surface 1a of the cylindrical body 1N is tapered.
  • the burr 1b If the burr 1b is removed from the molded product, ie, the cylindrical body 1N, the burr 1b does not remain in the centrifugal mold. However, in the centrifugal mold 10B of FIG. 15, since the outer peripheral edge of the conical inner lid 42 is positioned in the immediate vicinity of the inner peripheral surface of the mold body 11, as clearly shown in FIG. 17b, the end surface of the cylindrical body 1N The outer peripheral edge where 1a and the outer peripheral surface 1c intersect has an acute angle with a cross-sectional shape of less than 90 °. Therefore, in this cylindrical body 1N, the root portion of the burr 1b, that is, the connecting portion between the burr 1b and the cylindrical body 1N is thin, and the burr 1b is easily separated from the root. If the burr 1b is cut off from the root at the time of mold removal, the burr 1b may remain in the centrifugal mold 10B and cause a defective product in the next centrifugal molding process.
  • the bonding strength between the burr and the cylindrical body is high, and the burr is formed into a cylindrical body when the cylindrical body is removed.
  • a centrifugal mold that is taken out from the centrifugal mold and a method for manufacturing a cylindrical body using the centrifugal mold are also provided.
  • the centrifugal mold is a centrifugal mold having a tubular mold body for centrifugally molding a cylindrical body, and a closing member that closes an opening of the mold body.
  • a conical or frustoconical inner lid is provided on the inner surface of the closing member facing inward of the mold, and projects inward from the centrifugal mold and decreases in diameter toward the inner side of the centrifugal mold.
  • the peripheral edge is separated from the inner peripheral surface of the mold main body by a predetermined distance L, and the outer peripheral side of the inner lid is a surface perpendicular to the axial center line direction of the centrifugal mold.
  • a cylindrical body formed by such a centrifugal mold has a peripheral surface perpendicular to the axial direction of the cylindrical body, like a cylindrical body 1P in FIGS. 19a, 19b, and 20b described later. Therefore, the thickness of the root portion of the burr formed on the outer peripheral edge of the end face of the cylindrical body is larger than the cylindrical body 1N of FIGS. 17a and 17b, and the bonding strength between the burr and the main body portion of the cylindrical body is high. Become.
  • the burr when removing the cylindrical body from the centrifugal mold, the burr is prevented from being separated from the root, and the burr is removed from the cylindrical body integrally. As a result, burrs are prevented from remaining in the centrifugal mold, and defective products are prevented from occurring in the cylindrical body molded in the subsequent molding cycles.
  • FIG. 18 shows a centrifugal mold 10D according to such an embodiment
  • FIGS. 19a and 19b show a cylindrical body 1P that is centrifugally molded using this centrifugal mold 10D.
  • the inner lid 42A has a conical shape with a smaller diameter than the inner lid 42 of the centrifugal mold 10B of FIG. 15, and the outer peripheral edge of the inner lid 42A is the inner periphery of the mold body 11. It is separated from the peripheral surface by a predetermined distance L.
  • the other configuration of the centrifugal mold 10D is the same as that of the centrifugal mold 10C of FIG. 15, and the same portions are denoted by the same reference numerals.
  • the amount of raw material resin injected is such that the inner peripheral edge 1i of the cylindrical body 1P that is centrifugally molded along the inner peripheral surface of the mold body 11 is within the recess 42a.
  • the amount matches the edge on the lid center side.
  • the end surface 1a of the cylindrical body 1P is formed by contacting the tapered surface 1d formed by contacting the inner lid 42A and the packing 41 (fluororesin-based packing material 41b) in the range L.
  • the vertical surface 1e is perpendicular to the axial direction of the body 1P.
  • Width t 2 of the vertical plane 1e in the radial direction of the cylindrical body 1P is a value that matches the above distance L.
  • the inclination angle ⁇ of the taper surface 1d with respect to the vertical surface 1e is preferably about 10 to 50 °, particularly about 15 to 40 °. It is also preferable to change the angle between the rising portion and the central portion.
  • the width t 2 that is, the distance L of the vertical surface 1 e depends on the thickness T of the cylindrical body 1 E, but is preferably 0.5 mm or more and 50 mm or less, 0.8 mm or more and particularly 2.0 mm or less. If t 2 is small, the thickness of the vicinity of the base of the burr 1b is not sufficiently large. If t 2 is excessively large, relatively t 1 decreases, the effect of providing the conical inner lid 42A becomes lower.
  • the burr 1b formed so as to project radially from the outer peripheral edge of the end surface 1a (the intersection angle edge between the end surface 1a and the outer peripheral surface 1c) has a root thickness. It becomes larger than the cylindrical body 1N of FIG. 17, and the connection strength between the burr 1b and the cylindrical body 1P increases. As a result, when removing the cylindrical body 1P, the burr 1b is removed from the base portion of the cylindrical body 1P without being divided near the root. This prevents the burr 1b from remaining in the centrifugal mold 10D and prevents the generation of defective products.
  • the sealing plate 32, the packing 41, the inner lid 42A, and the lid 12 constitute a closing member.
  • the inner lid 42A has a conical shape
  • the inner surface of the inner lid 42A (the surface facing the inside of the centrifugal mold 10D) is a conical surface as a whole, but like the centrifugal mold 50 shown in FIG.
  • the inner lid 70 attached to the inner surface side of the seal plate 60 may have a truncated cone shape. That is, the surface of the inner lid 70 facing the inside of the centrifugal mold 50 has a tapered surface 71 in the vicinity of the outer peripheral edge, and a plane 72 perpendicular to the axial center line direction of the centrifugal mold 50 on the center side thereof. It has become.
  • the outer peripheral edge of the inner lid 70 is separated from the inner peripheral surface of the mold body 51 by a distance L.
  • a plurality of recesses 75 are provided in the plane 72. Each recess 75 is located at an equal radius with respect to the central axis of the inner lid 70.
  • An opening 61 is provided in the central portion of the seal plate 60, and a convex portion 73 protruding from the inner lid 70 is fitted in the opening 61.
  • the inner lid 70 is fixed to the sealing plate 60 by bolts (not shown) that pass through the sealing plate 60 and screwed into the inner lid 70, but the fixing method of the inner lid 70 is not limited to this.
  • the packing 80 interposed between the seal plate 60 and the inner lid 70 is formed by laminating a silicon-based packing material 81 that overlaps the seal plate 60 and a fluororesin-based packing material 82 that overlaps the inner lid 70. Yes.
  • a flange 53 is provided at the end of the mold body 51 of the centrifugal mold 50.
  • the seal plate 60 overlaps the end surface of the mold body 51 via the packing 80.
  • a lid for fixing the seal plate 60 to the mold body 51 is provided.
  • this lid one having the same configuration as the lid 12 can be used.
  • the sealing plate 60, the inner lid 70, the packing 80, and the lid constitute a closing member.
  • the cylindrical body 3 shown in FIG. 20b is molded.
  • the injection amount of the raw material resin is such that the end surface 3a of the cylindrical body 3 that is centrifugally molded along the inner peripheral surface of the mold body 51 is in contact with the outer peripheral side of the tapered surface 71 and the flat surface 72, and the inner peripheral edge 3i is the recess 75.
  • the amount matches the edge on the center side.
  • the end surface 3 a of the cylindrical body 3 is formed by contacting the flat surface 72, the vertical surface 3 f perpendicular to the axial direction of the molded body 3, and the tapered surface 3 d formed by contacting the tapered surface 37.
  • a vertical surface 3e that is formed by coming into contact with the packing 80 (fluororesin-based packing material 82) in the L range and is perpendicular to the axial direction of the molded body 3.
  • Preferred range of the radial width t 3 of the vertical surface 3e is similar to t 2 of FIG 19b.
  • a convex portion 3g exists along the inner peripheral edge 3i.
  • the thickness near the root of the burr 3b protruding from the outer periphery of the intersection between the end surface 3a and the outer peripheral surface 3c increases. Thereby, it is prevented that the burr 3b is divided at the time of demolding, and generation of defective products is prevented. Moreover, the shape inspection of the cylindrical body 3 can be easily performed by the convex portion 3g.
  • the lid 12 and the sealing plates 32 and 60 are provided as the closing member, but the lid may be omitted and the closing member may be constituted only by the sealing plate.
  • the preferable size of the convex portions 2, 2A to 2J, 2a, 2a ', 2b, 3g and the concave portion 5 is preferably determined based on the tolerance of the inner diameter.
  • the convex part or the concave part is an independent shape, it is easy to recognize that it is concentric if it is 3 points or more, and if it is within 32 points, it is preferable because it is easy to suppress the occurrence of burrs. About 8 points are particularly suitable.
  • FIGS. 14 to 16 include the locking device 21 shown in FIG. 23, but the locking mechanism is not limited to this, and various types can be adopted.
  • An example of such a centrifugal mold with a lock mechanism is shown in FIGS.
  • the 21 has a tubular mold body 111 and a lid 112 for closing the opening of the mold body 111.
  • the lid 112 is provided with the concave portion or the convex portion. After injecting the raw material resin into the mold body 111 and mounting the lid 112, a cylindrical molded product along the inner peripheral surface of the mold body 111 is formed by rotating at high speed around the mold axis. .
  • the lid 112 is provided so as to follow a disc-shaped lid plate 113 that closes the opening end surface of the mold main body 111 and from the outer periphery of the lid plate 113 to the outer peripheral surface of the mold main body 111 with a predetermined interval. And a cylindrical side tube portion 114.
  • the lock device 121 for fixing the lid 112 to the mold body 111 includes a lock claw support portion 122 provided at a plurality of locations, for example, 3 to 4 locations at equal intervals on the side cylinder portion 114 of the lid 112, and each lock claw. It has a lock claw 123 attached to each support portion 122, a spring 124 that urges the lock claw 123 in the lock position direction, and a lock release ring 125 provided at the tip of the side tube portion 114.
  • the lock claw support portion 122 supports a pin hole for attaching a pin (support shaft) 126 for pivotally supporting the lock claw 123, a spring accommodating portion 127 for mounting the spring 124, and the lock release ring 125. And an internal thread portion to which the bolt 128 is attached. Since the female thread portion to which the bolt 128 is attached supports the unlocking ring 125 provided over the entire circumference of the side tube portion 114, the position of the side tube portion 114 is arbitrary regardless of the position of the lock claw support portion 122. Can be provided.
  • the unlocking ring 125 includes an unlocking piece 131 inserted between the outer peripheral surface of the mold body and the inner peripheral surface of the side cylinder portion, an attachment piece 132 in a state along the outer peripheral surface of the side cylinder portion, and the attachment pieces 131 and 132. It has a U-shaped cross section composed of connecting pieces 133 to be connected.
  • the mounting piece 132 is provided with a long hole 134 having a long axis in the mold axial direction so as to correspond to the mounting position of the bolt 128.
  • the lock release ring 125 is attached to the tip of the side cylinder portion 114 in a movable state with respect to the mold axial direction by the bolt 128 inserted through the long hole 134.
  • the lock claw 123 has a base end portion supported by the pin 126 and is in a rotatable state.
  • the rotation end (inner end) protrudes from the inner peripheral surface of the side tube portion toward the mold main body, and is a mold. It is in a state where it can contact the outer peripheral surface of the main body.
  • the lock claw 123 is urged in the projecting direction by the spring 124, and in a state where the lid 112 is not attached to the mold body 111, the lock claw 123 reaches a position where it comes into contact with the tip of the lock release piece 131 in the lock release ring 125. It is held in a rotated state.
  • the lock release ring 125 is pressed to a position (on the side opposite to the cover plate) away from the end of the side tube by the lock claw 123 biased by the spring 124, and the lock claw 123 at this time
  • the rotating end is in a state of protruding to the inner peripheral side from a position corresponding to the outer peripheral surface of the mold main body 111.
  • the lock device 121 formed in this way is configured to reduce the biasing force of the spring 124 when the rotation end of the lock claw 123 contacts the outer peripheral surface of the mold body 111 when the lid 112 is mounted on the mold body 111. Accordingly, the lock claw 123 is pushed back to the cover plate 113 side.
  • the lock claw 123 is rotated at the end of the mold by the urging force of the spring 124.
  • the main body 111 is held in contact with the outer peripheral surface.
  • the position where the rotation end of the lock claw 123 abuts on the outer peripheral surface of the mold body 111 is the size of each part so that the position is closer to the opening side (the cover plate 113 side) than the pin 126.
  • the positional relationship is set.
  • the lock claw 123 that rotates about the pin 126 is in a locked state in which it is wedged between the mold main body and the side tube portion due to the positional relationship between the pin 126 and the rotation end contact portion. . Therefore, the movement of the lid 112 in the opening direction is prevented, and the lid 112 is held in a state where the opening of the mold body 111 is closed. That is, the lid 112 is automatically held in a closed state only by being assembled in the axial direction with respect to the mold body 111.
  • the lock release ring 125 When the lid 112 is removed from the mold body 111 after molding, the lock release ring 125 is moved to the lid plate 113 side, and the lock claw 123 is pivoted to the lid plate side by the lock release piece 131, thereby turning the rotation end. And the outer peripheral surface of the mold body 111, that is, the locked state by the lock claw 123 can be released.
  • the lid 212 is provided with the concave portion or the convex portion. ing. After injecting the raw material resin into the mold main body 211 and attaching the lid 212, a cylindrical molded product along the inner peripheral surface of the mold main body 211 is obtained by rotating at high speed around the mold axis. is there.
  • the lock device 221 for fixing the lid 212 to the mold body 211 includes a lock claw support portion 222 provided at three equal intervals on the outer periphery of the lid 212 and a lock claw attached to each lock claw support portion 222. 223.
  • the lock claw support portion 222 has a pair of support pieces 224 that sandwich the lock claw 223.
  • Each support piece 224 is formed by cutting the outer periphery of the lid 212, and the upper surface 222a of the lock claw support portion 222 is inclined so that the outer periphery side of the lid is lowered.
  • the support piece 224 is provided with a pin hole 227 for attaching a pin 225 for supporting the lock claw 223.
  • the lock claw 223 has a locking portion 226 that locks on a flange 213 provided in the mold main body 211 at the front end portion, and a male screw portion for nut screwing at the rear end portion.
  • the lock claw 223 can be moved in the mold axial direction by being pivotally supported by the support piece 224 with the pin 225 inserted through a long hole 227 in the claw longitudinal direction provided in an intermediate portion. It can be tilted in the linear direction.
  • the coil spring 230 When the lock claw 223 is attached to the lid 212, the coil spring 230 is attached in a compressed state via a washer 229 between the nut 228 screwed into the male screw portion at the rear end and the lock claw support portion 222. is doing. The coil spring 230 is pressed against the upper surface 222a of the lock claw support portion 222, that is, the coil spring abutting surface, with the outer peripheral side displaced in the direction of the claw tip. The amount of side deflection increases.
  • the lock device 221 formed in this manner is in a state where the locking portion 226 of the lock claw 223 is securely locked to the flange 213 by the action of the coil spring 230 when the lid 212 is mounted on the mold body 211. At the same time, the lid 212 is pressed against the opening of the mold body 211. At this time, the lid 212 can be brought into close contact with the mold body 211 with a necessary and sufficient pressing force by appropriately selecting the performance of the coil spring 230. Further, the pressing force by the coil spring 230 can be finely adjusted by changing the screwing amount of the nut 228 to the lock claw 223.
  • the lock device 221 can be unlocked by tilting the rear end of the lock claw 223 toward the inner periphery of the lid.
  • the tilting operation of the lock claw 223 can be easily performed by pressing a lock release jig (not shown) having a conical taper surface with the lid side widened on the inner periphery in the mold axial direction. Further, by forming the tapered surface of the unlocking jig into a conical surface having the maximum diameter corresponding to the lid 212, the three lock claws 223 can be tilted at the same time regardless of these positions. .
  • the unlocking jig having such a conical surface and the jig for gripping the lid 212 the attachment / detachment of the lid 212 with respect to the mold body 211 and the opening / closing operation of the locking device 221 are automatically performed. Can be done.
  • the inner hole of the cylindrical body does not have to be completely coaxial with the outer peripheral surface of the cylindrical body, and may be slightly decentered.
  • the above embodiment is an example of the present invention, and the present invention may have a configuration other than the above.
  • surface treatment such as plating (for example, chromium plating) or plasma treatment may be performed on the inner surface of the formed cylindrical body.
  • a layered structure may be formed by forming a layer of silicon-based material or fluorine-based material on the inner surface of the cylindrical body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)
  • Centrifugal Separators (AREA)

Abstract

L'invention porte sur un moule de formage par centrifugation qui permet de trouver facilement des défauts de forme sur le bord périphérique interne d'une surface d'extrémité d'un corps cylindrique ; et un procédé de fabrication d'un corps cylindrique à l'aide du moule de formage par centrifugation. Ce moule de formage par centrifugation 10A comporte un corps principal de moule tubulaire 11 pour former un corps cylindrique 1A par centrifugation, et une plaque d'étanchéité 32 qui ferme une ouverture du corps principal de moule 11, des parties en creux 32a, destinées à former des parties saillantes 2 le long d'un bord périphérique interne 1i du corps cylindrique 1A qui a été formé, étant disposées sur la surface interne de la plaque d'étanchéité 32 à des positions radiales égales par rapport au centre de la plaque d'étanchéité 32. Une résine R est injectée dans le moule de formage par centrifugation 10A de manière à former le corps cylindrique 1A par centrifugation.
PCT/JP2017/018350 2016-06-30 2017-05-16 Moule de formage par centrifugation et procédé de fabrication de corps cylindrique WO2018003329A1 (fr)

Priority Applications (2)

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CN201780039229.8A CN109476052A (zh) 2016-06-30 2017-05-16 离心成型模和圆筒体的制造方法
KR1020187037463A KR20190025845A (ko) 2016-06-30 2017-05-16 원심 성형형 및 원통체의 제조 방법

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JP2016-130410 2016-06-30
JP2016130410A JP2018001552A (ja) 2016-06-30 2016-06-30 遠心成形型及び中空円筒体の製造方法

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JPS4824024B1 (fr) * 1969-06-12 1973-07-18
JPH0247014A (ja) * 1988-08-10 1990-02-16 Nippon Zeon Co Ltd 真円または真円同心多層構造体の製造方法
JP2000002629A (ja) * 1998-06-18 2000-01-07 Geotop Corp 遠心力締固めコンクリートの圧縮試験供試体、その型枠及び製造方法
JP2004142109A (ja) * 2002-10-21 2004-05-20 Nippon Polypenco Ltd 遠心成形型における蓋のシール構造
JP2004352545A (ja) * 2003-05-28 2004-12-16 Kobe Steel Ltd ガラス状炭素製パイプの製造方法及び該方法により製造されるガラス状炭素製パイプ
JP2008044323A (ja) * 2006-08-21 2008-02-28 Shin Etsu Polymer Co Ltd 遠心成形用金型及び無端成形体の製造方法

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US3522340A (en) * 1969-09-17 1970-07-28 Joseph F Shoe Co Inc Injection molding process
CN203792605U (zh) * 2014-04-18 2014-08-27 湖南省洪昌科技有限公司 滚塑成型油桶所用的模具
CN204309182U (zh) * 2014-11-16 2015-05-06 扬州尼尔工程塑料有限公司 连体式金属芯mc尼龙轮金属芯封密式模具
CN106903833A (zh) * 2017-04-27 2017-06-30 郭文政 钢衬塑法兰衬塑面一次成型模盖

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4824024B1 (fr) * 1969-06-12 1973-07-18
JPH0247014A (ja) * 1988-08-10 1990-02-16 Nippon Zeon Co Ltd 真円または真円同心多層構造体の製造方法
JP2000002629A (ja) * 1998-06-18 2000-01-07 Geotop Corp 遠心力締固めコンクリートの圧縮試験供試体、その型枠及び製造方法
JP2004142109A (ja) * 2002-10-21 2004-05-20 Nippon Polypenco Ltd 遠心成形型における蓋のシール構造
JP2004352545A (ja) * 2003-05-28 2004-12-16 Kobe Steel Ltd ガラス状炭素製パイプの製造方法及び該方法により製造されるガラス状炭素製パイプ
JP2008044323A (ja) * 2006-08-21 2008-02-28 Shin Etsu Polymer Co Ltd 遠心成形用金型及び無端成形体の製造方法

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TW201808578A (zh) 2018-03-16
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KR20190025845A (ko) 2019-03-12

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