WO2018182181A1 - Dispositif de moule de presse, procédé de moulage à la presse l'utilisant, et objet moulé à la presse - Google Patents

Dispositif de moule de presse, procédé de moulage à la presse l'utilisant, et objet moulé à la presse Download PDF

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Publication number
WO2018182181A1
WO2018182181A1 PCT/KR2018/002347 KR2018002347W WO2018182181A1 WO 2018182181 A1 WO2018182181 A1 WO 2018182181A1 KR 2018002347 W KR2018002347 W KR 2018002347W WO 2018182181 A1 WO2018182181 A1 WO 2018182181A1
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WO
WIPO (PCT)
Prior art keywords
press
molding
pad
press object
hole
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PCT/KR2018/002347
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English (en)
Korean (ko)
Inventor
김동진
Original Assignee
주식회사전우정밀
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Application filed by 주식회사전우정밀 filed Critical 주식회사전우정밀
Publication of WO2018182181A1 publication Critical patent/WO2018182181A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/08—Dies with different parts for several steps in a process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/06—Stripping-off devices

Definitions

  • the present invention relates to a press die apparatus, a press molding method and a press molded article using the same.
  • the press method refers to a method of manufacturing a product using a press mold apparatus.
  • the press mold apparatus puts the molding member on top of the fixed lower mold, and then lowers the upper mold which performs punching to make a product of a desired shape.
  • the casting method is a method in which molten metal is put into a mold and a casting is made into a desired shape according to the mold.
  • the casting refers to a metal product made by melting the molten metal into a mold and solidifying it into a desired shape.
  • the casting is injected into a plurality of molds, and the process of separating the respective casting, which in turn takes unnecessary material consumption.
  • castings have defects such as pores on their surface due to the nature of the manufacturing method, which leads to product defects.
  • the outer surface as shown in FIG. 1 has a circular or polygonal shape, and the pipe-shaped product 1 having three stages of one stage (H1), two stages (H2), and three stages (H3) has been cast using a casting method. Has been produced.
  • the press method has a simple method, and there is no unnecessary consumption of materials, but in the case of a product having a complicated shape having three or more stages as shown in FIG. 1, the press method is still manufactured by casting due to the limitations of the press method. . Therefore, inevitably, when manufacturing the product 1 as shown in FIG.
  • the present invention is to provide a press mold apparatus and a molding method capable of producing a three-stage pipe-shaped product without casting, thereby reducing waste of unnecessary materials.
  • the present invention is to provide a press mold apparatus and a molding method capable of supplementing an environment-friendly aspect by reducing the carbon emissions by producing a three-stage pipe-shaped product, not by casting.
  • the present invention is to provide a press mold apparatus and a molding method capable of producing a three-stage pipe-shaped product without casting, thereby reducing the defective rate of the product.
  • the present invention provides a press mold apparatus.
  • the hollow object is formed of a press-form having a pipe-shaped press object having a first end to a third end from the upper side, the diameter of the first end and the third end, respectively
  • a press die apparatus for producing a pipe shape smaller than a diameter of a second stage comprising: a first press mold machine for primary forming an initial press object; And a second press mold machine for secondary molding the primary molded press object, wherein the first press mold machine includes an upper end portion connected to the first end and the second end, and the second end and the third end.
  • the first press mold machine the vertical movement is possible, the first upper mold portion having a first punch member for drawing the press object; And a first lower die portion provided below the first upper die portion and having a first lower die formed with a first through hole so that the press object is positioned inward.
  • a first hitting part capable of hitting an upper end of the press object; And a first guide part surrounding a circumference of the first striking part, and having a lower inner edge formed at a curved surface having a radius of curvature of R1 to guide the shape of the outer surface of the press object during the primary molding.
  • a first pad member positioned to face the first punch member and supporting the press object to be molded from the lower side, wherein the first pad member includes the first through hole.
  • the second hitting portion capable of hitting the upper end of the press object; And a second guide part surrounding a circumference of the second striking part, the bottom inner edge of which is formed as a curved surface having a radius of curvature of R2 to guide the shape of the outer surface of the press object during the secondary molding.
  • a second pad member positioned to face the second punch member and supporting the press object to be molded from below, wherein the second pad member includes the second through hole. Inserted therein, and supports the bottom and the outer surface of the press object, the upper inner edge is a second pad portion having a curved surface having a radius of curvature of the R2; includes.
  • the first punch member is located inside the first striking portion, the first punch to support the inner surface of the press object during the primary molding and guide the shape of the inner surface of the press object
  • the first pad member further includes a first support part positioned inside the first pad part so as to face the first punch part and supporting an inner surface of the press object.
  • the second punch member further includes a second punch portion positioned inside the second striking portion to support the inner surface of the press object during the secondary molding and to guide the shape of the inner surface of the press object.
  • the pad member further includes a second support part positioned inside the second pad part so as to face the second punch part and supporting an inner side surface of the press object.
  • the diameter of the first punch portion and the first support portion is the same as the inner diameter of the press object
  • the diameter of the second punch portion is the first end of the press object after the primary molded Is equal to the inner diameter of
  • the diameter of the second support portion is equal to the inner diameter of the third end of the press object after the primary molding.
  • the first striking portion, the first guide portion and the first punch portion are each movable up and down independently of each other, the lower end of the first guide portion and the lower end of the first punch portion is the first striking It is further below the lower end of a part, and after the said 1st striking part hits the upper end of the said press object at the said 1st shaping
  • the first upper mold part and the first pad part are lowered until they are raised relative to the first pad part, and the lower surface of the first guide part contacts the upper surface of the first lower die.
  • the outer side of the first end is supported by the inner side of the first guide part, the outer side of the second end is supported by the side of the first through hole, and the outer side of the third end is the first side. On the inner side of the pad part Is supported by.
  • the first pad portion is formed with a first pad hole penetrating in the vertical direction, the first pad hole, the first seating hole for seating the press object; And a diameter formed at a lower portion of the first seating hole and smaller than a diameter of the first seating hole. And a first support hole through which the first support portion passes.
  • the first support portion includes a first protrusion protruding upward of the first support hole, the first protrusion is inserted into the hollow of the press object seated in the seating hole, 1
  • the outer surface of the projection supports the inner surface of the lower end of the press object.
  • the upper end of the press object is inserted into the lower portion of the first guide hole formed in the vertical direction in the first guide portion, the lower end of the press object is in the first seating hole It is seated.
  • a lower portion of the first pad portion is connected to a first ejection member which provides an elastic force upward to the first pad portion to allow the primary molded object to be ejected upward.
  • the cross section of the upper inlet of the first through hole is provided in any one of a circular, elliptical, or polygonal shape.
  • a third press mold for tertiary molding the secondary molded press object, wherein the third press mold, the upper joint and the lower joint is molded to be a vertical plane.
  • the third press mold machine the upper and lower movable, the third upper mold portion having a third punch member for drawing the secondary molded press object; And a third lower mold part provided below the third upper mold part and having a third first lower die having a third through hole formed therein so that the press object is positioned inward.
  • a third striking part capable of striking an upper end of the press object; And a third guide part surrounding a circumference of the third striking part, and having a lower inner edge thereof formed vertically to guide the shape of the outer surface of the press object during the tertiary molding.
  • a third pad member positioned to face the third punch member and supporting the press object to be molded from below, wherein the third pad member is inserted into the third through hole and is pressed into the press. And supporting a lower end and an outer side of the object, the upper inner edge of the third pad part being vertically formed.
  • the third punch member further comprising a third punch portion which is located inside the third striking portion, supports the inner surface of the press object and guides the shape of the inner surface of the press object
  • the third pad member may further include a third support part positioned inside the third pad part so as to face the third punch part and supporting an inner side surface of the press object.
  • the present invention provides a press molding method.
  • the hollow object is formed of a press-form having a pipe-shaped press object having a first end to a third end from the upper side, the diameter of the first end and the third end, respectively
  • the press-molding method for producing a pipe shape smaller than the diameter of the second end the upper end portion connecting the first end and the second end and the lower end portion connecting the second end and the third end have a predetermined radius of curvature.
  • the method may further include a third molding step of terminating a press object after the second molding step.
  • a third molding step of terminating a press object after the second molding step.
  • an outer surface of the first end and an upper part of the second end are formed. The surfaces are formed to be perpendicular to each other, and the lower surface of the second stage and the outer surface of the third stage are molded to be perpendicular to each other.
  • the first guide portion is raised and lowered independently of the first striking portion, the first striking portion in the first guide portion It is raised relative to the first guide and the first guide portion is lowered until it contacts the upper surface of the first lower die.
  • the first forming step after the first striking portion hits the upper end of the press object, until the bottom surface of the first guide portion is in contact with the top surface of the first lower die, The first upper mold part and the first pad part are lowered, and an outer side surface of the first end is supported by an inner side surface of the first guide part, and an outer side surface of the second end is formed on a side surface of the first through hole.
  • the outer surface of the third end is supported by the inner surface of the first pad portion.
  • the first protrusion formed on the upper portion of the first support portion protrudes above the first support hole, the first protrusion portion of the press object seated in the seating hole Inserted into the hollow, the outer surface of the first protrusion supports the inner surface of the lower end of the press object.
  • 1 is a view showing a pipe-shaped product having three stages.
  • FIG. 2 is a view sequentially showing a process of molding a press object by the present invention.
  • FIG. 3 is a view showing a first press mold machine.
  • FIG. 4 is a view illustrating a first pad part.
  • 5 to 9 are views sequentially showing a process of primary molding a press object by using the first press mold machine of the present invention.
  • FIG. 10 is a view showing a second press mold machine of the present invention.
  • 11 to 15 are diagrams sequentially showing a process of secondary molding of the primary molded press object by using the second press mold machine of the present invention.
  • FIG. 16 is a view showing a third press mold machine of the present invention.
  • 17 to 21 are views sequentially showing the process of tertiary molding the secondary molded press object by using the third press mold machine of the present invention.
  • 22 is a flow chart showing a press molding method according to the present invention.
  • FIG. 2 is a view sequentially showing a process of molding a press object by using the press mold apparatus according to the present invention.
  • FIGS. 5 to 9 are views showing a process of primary forming a press object using the first press mold machine of the present invention.
  • FIG. 9 to FIG. are views showing a second press mold machine of the present invention.
  • 11 to 15 are diagrams sequentially showing a process of secondary molding a press object by using the second press mold machine 2000 of the present invention.
  • FIG. 16 is a view showing a third press mold machine of the present invention.
  • 17 to 21 are views sequentially showing a process of tertiary molding of a press object by using the third press mold machine 3000 of the present invention.
  • the press die apparatus by this invention shape
  • the press object P refers to the press object P in all states before the primary to tertiary molding is completed.
  • the press molding Q refers to the final product in which the press object P completed 1st-3rd molding.
  • the pipe-shaped press molding Q which has a 3-stage structure in an up-down direction.
  • the press-molded article Q is formed in one stage H1 to three stages H3 from the upper side to the lower side.
  • the diameter and cross-sectional area of the first stage H1 and the third stage H3 are different from the diameter and the cross-sectional area of the second stage H2, respectively.
  • the diameter and cross-sectional area of the two stages H2 are larger.
  • a diameter means an inner diameter.
  • 1st stage H1 and 3rd stage H3 may mutually be the same, and may differ.
  • Screw thread may be formed at the third stage (H3) to enable bolting.
  • the press object P may be a metal.
  • the press object P may be a metal of SUS series.
  • the press object P may be SUS304.
  • the present invention is not limited thereto, and any material may be press-molded.
  • the press mold apparatus includes a first press mold machine 1000, a second press mold machine 2000, and a third press mold machine 3000.
  • the primary molding is performed by the first press mold machine 1000
  • the secondary molding is performed by the second press mold machine 2000
  • the tertiary molding is performed by the third press mold machine 3000.
  • the press object P is transferred to the second press mold machine 2000 after the primary molding and secondary molding.
  • the press object P after the secondary molding is completed is transferred to the third press mold machine 3000 to be tertiarily molded.
  • the upper joint TC connecting the first stage and the second stage, and the lower joint BC connecting the second stage and the third stage are formed in a vertical plane.
  • the present invention can be molded in the shape originally designed while preventing the risk of breakage of the press object P by performing the molding step by several steps through primary molding and secondary molding.
  • the upper joint TC and the lower joint BC may be molded into curved surfaces having a radius of curvature R1.
  • the upper joint TC and the lower joint BC may be molded into curved surfaces having a radius of curvature R2.
  • R2 may be smaller than R1 and ultimately approach each joint part perpendicular
  • or the 3rd press mold machine 3000 differs only in some structures, and its basic structure is the same. Therefore, the structure of the 1st press mold machine 1000 is demonstrated in detail, and the structure of the 2nd press mold machine 2000 and the 3rd press mold machine 3000 shall be demonstrated centering on the difference with the 1st press mold machine 1000.
  • FIG. 8 is an enlarged view of area A of FIG. 7.
  • the first press mold machine 1000 is formed such that the upper joint TC connecting the first stage and the second stage and the lower joint BC connecting the second stage and the third stage form a curved surface having a predetermined radius of curvature R1. (See FIG. 2).
  • the press mold apparatus includes a first upper mold part 1100 and a first lower mold part 1200.
  • the first upper mold part 1100 includes a first upper plate 1110, a first upper fixing part 1120, and a first punch member 1300.
  • the first upper plate 1110 serves as a cover covering the upper portion of the first press mold 1000.
  • the first upper fixing part 1120 may be provided below the first upper plate 1110, and may include a first pressing member 1122 therein.
  • the first pressing member 1122 provides power so that the first punch member 1130, which will be described later, strikes the press object P.
  • the first pressing member 1122 is elastic and provides an elastic force to the first punch member 1130 so that the first punch member 1130 strikes the press object P.
  • the first punch member 1130 punches the press object P.
  • FIG. A portion of the first punch member 1130 may be inserted into the first upper fixing part 1120.
  • the other end of the first punch member 1130 is fixed to the upper fixing part 120 so that the first punch member 1130 may strike the press object P.
  • the first punch member 1130 includes a first hitting part 1132, a first punching part 1134, and a first guide part 1136.
  • the first striking part 1132 strikes the upper end of the press object P. As shown in FIG. 4, the first striking part 1132 strikes the upper end of the press object P. As shown in FIG. 4, the first striking part 1132 strikes the upper end of the press object P. As shown in FIG. 4, the first striking part 1132 strikes the upper end of the press object P. As shown in FIG. 4, the first striking part 1132 strikes the upper end of the press object P.
  • the lower end of the first hitting part 1132 may be provided in a shape corresponding to the upper end of the press object P.
  • FIG. The diameter of the lower end region corresponding to the portion hitting the upper end of the press object P among the first striking part 1132 may be the same as the diameter of the press object P before molding.
  • the first striking part 1132 is connected to the first pressing member 1122 thereon.
  • the first striking part 1132 may be independently moved by the first pressing member 1122.
  • the first striking part 1132 may be independently movable in the first guide hole 1137 formed in the first guide part 1136.
  • the first striking portion 1132 has a diameter of an upper portion larger than that of a lower portion. Accordingly, the first striking part 1132 can be moved only in a certain range by the jaw formed in the first guide hole 1137, which will be described later. .
  • the raising and lowering range of the first striking portion 1132 can be set, and the press object P can be molded in the shape originally designed so as not to lower than the first guide portion 1136.
  • the first punch part 1134 may be provided to be located inside the first striking part 1132 and to be surrounded by the first striking part 1132. That is, the first punch part 1134 is inserted through the center of the first striking part 1132. The lower end of the first puncher 1134 may protrude further downward than the lower end of the first striking part 1132.
  • the diameter of the first punch portion 1134 is provided to be equal to the diameter of the press object P.
  • the diameter of the first punch portion 1134 is provided to be equal to the inner diameter of the press object P, that is, the inner diameter. Therefore, the 1st punch part 1134 can support the inner surface of the press object P.
  • FIG. Molding proceeds in this state, and the first punch portion 1134 can prevent unexpected deformation of the press object P in the lateral direction.
  • the first guide portion 1136 guides the shape of the outer surface of the press object P. As shown in FIG.
  • the first guide part 1136 is formed to surround the first striking part 1132. That is, in order from the inner side, the first striking portion 1132, the first punching portion 1134, and the first guide portion 1136 are sequentially arranged.
  • the lower inner edge of the first guide part 1136 may be formed as a curved surface having a predetermined radius of curvature.
  • the radius of curvature may be R1.
  • the lower inner edge forms the upper seam TC of the press object P.
  • FIG. The first guide part 1136 falls by a predetermined distance, and the lower inner edge of the first guide part 1136 presses the press object P at a position corresponding to the upper joint portion TC of the press object P. Transform.
  • the upper joint portion TC may be formed as a curved surface having a radius of curvature R1.
  • the first pad part 1232 which will be described later, touches the bottom surface of the first through hole 1222. That is, the first upper mold part 1100 is lowered until the first pad part 1232 contacts the bottom surface of the first through hole 1222.
  • the lower end of the first guide part 1136 protrudes further downward than the lower end of the first striking part 1132. Therefore, in a state where the first guide part 1136 first wraps the outer surface of the press object P, the first striking part 1132 strikes the upper end of the press object P. FIG. Even though the first striking portion 1132 strikes the upper end of the press object P, since the first guide portion 1136 has already wrapped the outer surface of the press object P, the outer surface of the press object P is You can guide this to avoid unexpected changes.
  • the first guide hole 1137 is formed at the center of the first guide part 1136.
  • the first punch part 1134 and the first striking part 1132 are positioned in the first guide hole 1137.
  • the first guide hole 1137 may be formed of two layers, an upper part and a lower part.
  • the diameter of the upper portion of the first guide hole 1137 is provided larger than the diameter of the lower portion of the first guide hole 1137.
  • the shape of the first striker 1132 described above is also correspondingly formed.
  • the diameter of the upper portion of the first striking portion 1132 is greater than the diameter of the lower portion of the first guide hole 1137. Therefore, the first striking part 1132 may be caught by a jaw formed between the upper and lower portions of the first guide hole 1137. Therefore, the movement range of the first striking part 1132 may be limited to a predetermined range in the first guide hole 1137. Specifically, the lower end of the first striking part 1132 is not lowered so as to protrude further than the lower end of the first punching part 1134 or the lower end of the first guide part 1136.
  • the first punch part 1134, the first striking part 1132, and the first guide part 1136 may independently move up and down. That is, the first punch part 1134, the first hitting part 1132, and the first guide part 1136 may move up and down independently of each other.
  • the first punch part 1134 and the first guide part 1136 are fixed to the first upper fixing part 1120, and the first striking part 1132 is connected to the first pressing member 1122, thereby providing elasticity. As a result, it is possible to move in and out of the first guide hole 1137.
  • the first striking part 1132 is the press object.
  • the fall back is buffered by the recoil by (P). Therefore, the position relative to the 1st punch part 1134 and the 1st guide part 1136 raises.
  • the first striker 1132 ascends until it contacts the upper end of the first guide hole.
  • the first punch portion 1134 and the first guide is relatively lower than the first hitting portion 1132, and surrounds the side of the press object (P). This can prevent the press object P from making unexpected deformation in the lateral direction during the molding process of the press object P. As shown in FIG.
  • the first hitting portion 1132 presses the press target object P while descending after hitting the press target object P, and the press target object P receives an external force by the first hitting portion 1132 side.
  • the first punching part 1132 is in contact with the upper end of the press object P
  • the first punch part 1134 and the first guide part 1136 fully cover the side surface of the press object P
  • the first punch portion 1134 is supported on the inner side surface of the press object P
  • the first guide portion 1136 is supported on the outer side surface of the press object P, so as to be in the lateral direction of the press object P. Can prevent deformation.
  • the first lower mold part 1200 may include a first lower plate 1210, a first lower die 1220, and a first pad member 1230.
  • the first lower plate 1210 is installed on the bottom surface.
  • the first lower plate 1210 may include a first extraction member 1212 therein.
  • the first extraction member 1212 takes out the press object P (Q) on which primary molding is completed, to the outside.
  • the first pad member 1230 which will be described later, may be supported while the press object P is pressed and molded by the first striking member. That is, the first extraction member 1212 may apply a force upwardly to the first pad member 1230, which will be described later.
  • the first extraction member 1212 is connected to the first pad member 1230 at the bottom of the first pad member 1230.
  • the first extraction member 1212 may have elasticity and may provide an elastic force upward to the first pad member 1230.
  • the press object P on which the primary molding is completed is taken out above the first lower mold part 1200.
  • the first lower die 1220 provides a space in which the press object P is molded.
  • a through hole 1222 may be formed in the first lower die 1220.
  • the press object P and the first pad member 1230 are positioned in the first through hole 1222.
  • the first punch member 1130 descends toward the first through hole 1222 to strike and shape the press object P. As shown in FIG.
  • the cross section of the upper inlet of the first through hole 1222 may be any one of a circular, elliptic, or polygonal shape. Therefore, the outer side surface of the 2nd end of the press object P can be produced in any shape of circular, ellipse, or polygonal shape.
  • the first through hole 1222 may be formed in a two-layer structure of upper and lower portions in the vertical direction.
  • the diameter of the lower portion is provided larger than the diameter of the upper portion of the first through hole 1222. This is to prevent the first pad portion 1232, which will be described later, from being raised above the predetermined height by the first extraction member 1212.
  • the first pad member 1230 supports the press object P from the lower side or the side portion.
  • the press object P rests on the upper side of the first pad member 1230.
  • the first pad member 1230 includes a first pad part 1232 and a first support part 1236.
  • the first pad part 1232 has a two-layer structure of upper and lower portions in the vertical direction.
  • the shape of the first pad part 1232 is formed to correspond to the shape of the first through hole 1222 described above. That is, the diameter of the lower portion of the first pad portion 1232 is larger than the diameter of the upper portion of the first pad portion 1232. Accordingly, the jaw may be caught between the upper portion and the lower portion of the first through hole 1222.
  • An upper inner edge of the upper portion of the first pad part 1232 may be formed as a curved surface having a radius of curvature R1.
  • This part supports and shape
  • the first pad part 1232 receives an elastic force upward by the first extracting member 1212, but is caught by the jaw between the upper and lower portions of the first through hole 1222 and does not rise above a predetermined height. Therefore, the press object P can be taken out stably after primary molding.
  • a first pad hole 1233 is formed in the first pad part 1232.
  • the first pad hole 1233 is formed to penetrate in the vertical direction of the first pad part 1232.
  • the first pad hole 1233 includes a first mounting hole 1233a and a first support hole 1233b.
  • the first mounting hole 1233a is provided at an upper portion of the first pad part 1232.
  • the press object P is seated in the first mounting hole 1233a.
  • the first support hole 1233b is provided below the first mounting hole 1233a.
  • the diameter of the first support hole 1233b is smaller than the diameter of the first mounting hole 1233a.
  • the first support part 1236 to be described later penetrates into the first support hole 1233b in the vertical direction.
  • the first support part 1236 is inserted through the first support hole 1233b.
  • the diameter of the first support portion 1236 is provided to be equal to the inner diameter of the press object P.
  • the first support part 1236 is provided with a first protrusion part 1237 protruding upward.
  • the first protrusion 1237 is located in the first mounting hole 1233a.
  • the lower portion of the press object P is seated in the form of being fitted to the first protrusion 1237. That is, the first protrusion 1237 is inserted into the press object P.
  • the press object P is to be seated between the upper portion of the first pad portion 1232 and the first protrusion 1237.
  • the outer surface of the lower portion of the press object P is supported by the inner surface of the first pad portion 1232.
  • the inner surface of the lower portion of the press object P is supported by the first protrusion 1237. Therefore, even if the press object P is subjected to an external force by the first striking part 1132, the lower portion of the press object P can be supported, and the press object P can be stably molded.
  • FIG. 10 shows a second press mold 2000 of the present invention.
  • 11 to 15 are views sequentially showing secondary molding by the second press mold 2000.
  • FIG. 14 is an enlarged view of region A ′ of FIG. 13.
  • the second press mold machine 2000 secondaryly forms the press object P primarily molded in the first press mold machine 1000. Compared to the first press mold 1000, the second press mold 2000 forms the upper joint TC and the lower joint BC relatively gradually closer to the vertical plane.
  • Configurations of the second upper mold part and the second lower mold part are the same as those of the first upper mold part 1100 and the first lower mold part 1200, and the difference in configuration will be described.
  • the diameter of the second punch portion is the same as the inner diameter of the first end of the press object P after the primary molding.
  • the diameter of the second support part is equal to the inner diameter of the third end of the press object P after the primary molding. Therefore, the secondary molding can be performed in a state in which the first and third ends of the press object P are laterally supported.
  • the lower inner edge of the second guide portion is formed to have a radius of curvature smaller than the lower inner edge of the first guide portion 1136. That is, if the radius of curvature of the lower inner edge of the first guide portion 1136 is R1, the radius of curvature of the lower inner edge of the second guide portion 1136 is R2, and R2 is smaller than R1. As described above, the lower inner edge of each guide part corresponds to the upper joint part TC, thereby forming the upper joint part TC. Since R2 is smaller than R1, the upper joint TC can be molded closer to the vertical plane than in the primary molding.
  • the upper top inner edge of the second pad portion is formed as a curved surface having a radius of curvature R2. Since R2 is smaller than R1, the lower joint BC can be molded closer to the vertical plane than in the primary molding.
  • 16 shows a third press mold machine 3000 of the present invention.
  • 16 to 21 are views sequentially showing tertiary molding by the third press mold machine 3000.
  • 20 is an enlarged view of a region A ′′ of FIG. 19.
  • the third press molder 3000 performs the third molding of the press object P secondarily formed by the second press mold 2000.
  • the third press mold machine 3000 is molded so that the upper joint TC and the lower joint BC become vertical surfaces.
  • the configurations of the third upper mold part and the third lower mold part are the same as those of the first to second upper mold parts and the first to second lower mold parts, and the differences will be described.
  • the diameter of the third punch portion is the same as the inner diameter of the first end of the press object P after secondary molding.
  • the diameter of the third support part is the same as the inner diameter of the third end of the press object P after the secondary molding. Therefore, tertiary molding can be performed in a state where the first and third ends of the press object P are laterally supported.
  • the lower lower inner edge of the third guide portion is formed to be a vertical plane.
  • the lower inner edge of each guide part corresponds to the upper joint part TC, thereby forming the upper joint part TC. Therefore, since the upper joint part TC is a vertical plane, it can be shape
  • the upper inner edge of the third pad portion may also be formed in a vertical plane, and the lower joint BC may be molded to be a vertical plane.
  • FIGS. 11 to 14 are secondary molding by the second press mold machine 2000
  • FIGS. 17 to 20 are third press mold machines 3000.
  • the tertiary molding by) is shown sequentially.
  • 21 is a flow chart showing a press-molding method according to the present invention.
  • the press molding method according to the present invention includes a first molding step S100, a second molding step S200, and a third molding step S300.
  • a first molding step S100 of primary molding by the first press mold machine 1000 will be described.
  • the second molding step (S200) for secondary molding, the third molding step for the third molding will be described based on the difference between the first molding step.
  • the press object P is seated in the first mounting hole 1233a.
  • the first punch member 1130 also descends.
  • the first striking portion 1132 contacts or strikes the upper end of the press object P
  • the first striking portion 1132 is cushioned by the falling back due to the press object P. Since the first striking member 1132 is connected to the first pressing member 1122 on the upper side thereof, the first striking member 1132 is relatively relative to the first punching portion 1134 and the first guide portion 1136 in the first guide hole 1137. Can be moved upward.
  • the first punch part 1134 and the first guide part 1136 continuously descend as the first upper mold part 1100 descends.
  • the first striking part 1132 is blocked by the upper end of the first guide hole 1137 and cannot rise any more, and descends together thereafter, and presses the press object P.
  • the unexpected deformation in the lateral direction is prevented by the first punch part 1134 and the first guide part 1136.
  • a first extraction member 1212 having elasticity is connected to the lower side of the first pad part 1232, and is movable up and down within the first through hole 1222 due to the multi-stage structure of the first through hole 1222. .
  • die part 1100 is lowered in order to shape
  • the first striking part 1132 rises to an upper end of the first through hole 1222 and comes into contact with the inner wall of the first upper fixing part 1120 to stop.
  • the form of the three-stage structure of the press object P is formed, the first end of the press object P is formed above the first lower die 1220, and the second end and the third end are first penetrated. It is formed inside the hole 1222.
  • the second end is formed at the upper inlet of the first through hole 1222, and the third end is formed at the lower side of the second end.
  • the first end of the press object P is formed surrounded by the first guide portion 1136.
  • the first end is formed between the first punch portion 1134 and the first guide portion 1136.
  • the outer side surface of the first end is supported by the inner side surface of the first guide portion 1136.
  • the upper joint portion TC is formed in a shape corresponding to the lower inner edge of the first guide portion 1136. That is, it is formed in the curved surface which has the curvature radius R1.
  • the inner side surface of the first end is supported by the first punch portion 1134.
  • the second end of the press object P is formed along the inlet side of the first through hole 1222.
  • the outer side surface of the second end is supported by the inlet side of the first through hole 1222.
  • the lower joint portion BC is formed in a shape corresponding to the upper inner edge of the first pad portion 1232. That is, it is formed in the curved surface which has the curvature radius R1.
  • the third end of the press object P is formed surrounded by the first pad portion 1232. That is, the outer side surface of the third end is supported by the inner side surface of the first pad portion 1232. In addition, the third end is formed outside the first support portion 1236. The inner side surface of the third end is supported by the first support 1236.
  • the first upper mold part 1100 rises again, and an elastic force by the first extracting member 1212 acts, so that the first pad part 1232 also rises upward.
  • the first pad part 1232 rises and is caught by the jaw formed between the upper end and the lower end of the first through hole 1222, so that the first pad part 1232 can be raised only to a certain height.
  • the press object P after the primary molding is completed is exposed to the upper side of the first lower die 1220, and can be taken out.
  • 11 to 15 are views sequentially showing a process of the second molding step.
  • the press object P taken out from the first press mold machine 1000 is secondary molded in the second press mold machine 2000.
  • the process of molding the press object P by the second press mold machine 2000 is the same as or similar to that of the primary molding process.
  • the press object P is seated in the second seating hole of the second press mold machine 2000, and then the second upper mold part is lowered and molded.
  • the upper joint portion TC of the press object P may be molded into a curved surface having a radius of curvature R2.
  • the lower joint BC of the press object P may be molded into a curved surface having a radius of curvature R2.
  • R2 is a value smaller than R1
  • the upper joint TC and the lower joint BC may be molded closer to the vertical than the first molding step S100.
  • 17 to 21 are views sequentially showing a third molding step.
  • the press object P taken out from the second press mold machine 2000 is third-molded by the third press mold machine 3000.
  • the process of shaping the press object P by the third press molder 3000 is the same as or similar to that of the first molding and the second molding.
  • the press object P is seated in the third seating hole of the third press molder 3000, and then the third upper mold part is lowered and molded.
  • the upper joint portion TC of the press object P may be molded into the vertical plane.
  • the lower joint BC of the press object P may be molded into the vertical plane.
  • the press object P is taken out by the third extraction member.
  • the final press molding Q taken out is the same as the product shown in FIG.
  • the cross-section of the first through hole 1222, the second through hole, and the third through hole upper inlet is any one of a circle, an ellipse, and a polygon
  • the second end H2 of the press molding Q may also be corresponding thereto. Molded into shape.
  • a thread may be formed at a particular end of the press molding Q.
  • a screw thread may be formed at three stages H3 to form a boltable structure.
  • the press molding Q here is different from the molding manufactured by the existing casting method. Specifically, unlike the existing cast moldings, the whole product is integral, whereas the press molding Q according to the above-described press mold apparatus and the press molding method is compression molded under pressure in the vertical direction. Therefore, as shown in Fig. 2 or 20, inside the two-stage (H2), the predetermined area of the upper and lower parts are in contact with each other, that is, the inside is folded state by the external force applied up and down, Like the product by casting method, the whole is not integrated. Such a structure is advantageous in terms of durability than an integrated product by the existing casting method.
  • the curvature radii of the upper joint portion TC and the lower joint portion BC are not R2, but may be different from each other. This will be apparent to those skilled in the art, as long as the radius of curvature of the lower inner edge of the first to second punch portions and the radius of curvature of the lower inner edge of the first to second support portions are changed.
  • the first molding step (S100) to the third molding step (S300) is made, but the step is subdivided into the top joint (TC) and finally It is obvious that the right range also extends to the lower joint BC in the vertical plane.
  • first press mold 1100 first upper mold part
  • first lower mold part 1230 first pad member
  • first pad portion 1236 first support portion

Abstract

La présente invention concerne un dispositif de moule de presse. Selon la présente invention, le dispositif de moule de presse pour fabriquer, à partir d'un objet en forme de tuyau, à presser, ayant une partie creuse, un objet moulé à la presse ayant des premier à troisième segments entre la partie supérieure et la partie inférieure de celui-ci dans la forme de tuyau dans laquelle des diamètres du premier segment et du troisième segment sont respectivement plus petits que le diamètre du deuxième segment, comprend : un premier moule de presse pour mouler en premier lieu un objet initial à presser ; et un second moule de presse pour mouler en second lieu l'objet moulé en premier lieu à presser, le premier moule de presse moulant une partie joint supérieur au niveau de laquelle le premier étage et le deuxième étage sont reliés et une partie joint inférieur à laquelle le deuxième étage et le troisième étage sont reliés, de telle sorte que les parties joints forment une surface incurvée ayant un rayon de courbure prédéterminé R1, le second moule de presse moulant la partie joint supérieur et la partie joint inférieur de telle sorte que les parties joints forment une surface incurvée ayant un rayon de courbure prédéterminé R2, et R2 est plus petit que R1.
PCT/KR2018/002347 2017-03-31 2018-02-27 Dispositif de moule de presse, procédé de moulage à la presse l'utilisant, et objet moulé à la presse WO2018182181A1 (fr)

Applications Claiming Priority (2)

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KR10-2017-0041605 2017-03-31
KR1020170041605A KR101945794B1 (ko) 2017-03-31 2017-03-31 프레스 금형 장치, 이를 이용한 프레스 성형 방법

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KR102207009B1 (ko) * 2019-03-29 2021-01-25 박현석 주유관 탭홈 성형장치
KR102418253B1 (ko) * 2020-04-14 2022-07-07 (주)나라기술단 구조물 고정을 위한 전산볼트용 내진 커플러 제조 유닛 및 이를 이용한 내진 커플러 제조 방법
KR102474783B1 (ko) * 2022-02-16 2022-12-06 한지범 전선관 커넥터 및 그 제조방법

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KR101514622B1 (ko) 2015-01-27 2015-04-23 주식회사 에스코넥 프레스 소재 가공물의 모서리 곡률 반경을 최소화하는 프레스 성형방법

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KR950016936A (ko) * 1993-12-22 1995-07-20 이동락 파이프의 접속편 성형방법
JP2004141904A (ja) * 2002-10-23 2004-05-20 Aisin Takaoka Ltd 液圧プレス成形方法及び液圧プレス成形装置
KR100943720B1 (ko) * 2008-09-09 2010-02-23 (주)휘일 유체쇼크 또는 기계적 쇼크 완화용 용기 제조방법
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