CN114536649B - Forming method of steel-plastic composite right-angle short pipe fitting - Google Patents
Forming method of steel-plastic composite right-angle short pipe fitting Download PDFInfo
- Publication number
- CN114536649B CN114536649B CN202210134373.2A CN202210134373A CN114536649B CN 114536649 B CN114536649 B CN 114536649B CN 202210134373 A CN202210134373 A CN 202210134373A CN 114536649 B CN114536649 B CN 114536649B
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- plastic
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- movable
- core mold
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- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000008093 supporting effect Effects 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 238000001746 injection moulding Methods 0.000 claims abstract description 5
- 230000000670 limiting effect Effects 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 15
- 239000010959 steel Substances 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000010410 layer Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
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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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/76—Cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14598—Coating tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/261—Moulds having tubular mould cavities
- B29C45/2614—Moulds having tubular mould cavities for manufacturing bent tubular articles using an undercut forming mould core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/004—Bent tubes
Abstract
The steel-plastic composite right-angle short pipe fitting forming method comprises the following steps: a. a plastic support piece is assembled on the inner side of the steel cylinder with the hole; b. the first support tube of the belt Kong Gangtong is sleeved on the core fixing mold, and the core moving mold is inserted into the second support tube of the belt Kong Gangtong; c. moving the movable die to the fixed die, so that the movable die and the fixed die are assembled, and a closed die cavity is formed by a first right-angle groove on the fixed die, a second right-angle groove on the movable die, the fixed die and the movable die; d. starting the plastic injection device, injecting plastic into the closed die cavity, cooling, and completing injection molding of the short pipe fitting. According to the short pipe forming method, after the plastic support piece is arranged on the inner side of the belt Kong Gangtong, the Kong Gangtong is accurately positioned in the die cavity through the supporting effect of the plastic support piece and the core die, and then the assembly of the complete die cavity can be realized only by simply adjusting the movable core die and the movable die.
Description
Technical Field
The invention relates to a forming method of a steel-plastic composite right-angle short pipe fitting, and belongs to the technical field of manufacturing of steel-plastic composite right-angle short pipe fittings.
Background
The prior steel-plastic composite short pipe fitting is shown in fig. 3, and consists of an inner plastic 11, an outer plastic 13 and a perforated steel cylinder 12 positioned between the inner plastic 11 and the outer plastic 13, wherein a belt Kong Gangtong in the steel-plastic composite short pipe fitting is completely buried in a plastic coating layer, and has the advantages of high strength and strong corrosion resistance. At present, when manufacturing such a short pipe fitting, in order to ensure that the belt Kong Gangtong is completely buried in the plastic wrapping layer, a plastic support is usually inserted into the hole of the steel cylinder 12 with holes, the plastic support separates the belt Kong Gangtong from the core mold and the outer mold, the belt Kong Gangtong is ensured to be positioned in the middle of the short pipe fitting after being molded, and the through holes of the plastic support which are not inserted into the holes can ensure the circulation of plastic on two sides of the steel cylinder 12 with holes, so as to ensure the uniform filling of plastic on two sides of the steel cylinder 12 with holes.
When the short pipe fitting is manufactured, plastic support pieces are inserted into two sides of a steel cylinder 12 with holes, a belt Kong Gangtong is assembled with a core mold, the core mold is clamped in a mold cavity of a fixed mold, a movable mold is moved to form a complete mold cavity with the fixed mold, and finally the short pipe fitting is manufactured through procedures of injection molding, cooling and the like. The short pipe fitting has the defects of complex manufacturing scheme, high manufacturing cost, low production efficiency and the like.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides a novel steel-plastic composite right-angle short pipe fitting forming method which is matched with novel steel-plastic composite right-angle short pipe fitting forming equipment, can effectively improve the effective efficiency of the steel-plastic composite right-angle short pipe fitting, and has outstanding practicability.
The technical aim of the invention is realized by the following technical scheme:
the steel-plastic composite right-angle short pipe fitting forming method comprises the following steps:
a. a plastic support piece is assembled on the inner side of the steel cylinder with the hole;
b. sleeving a first support cylinder of the belt Kong Gangtong on the core fixing mold, adjusting a second support cylinder of the belt Kong Gangtong to a position corresponding to the movable core mold, inserting the movable core mold into the second support cylinder of the belt Kong Gangtong until the inserting end of the movable core mold is tightly attached to the limiting groove of the inserting end of the core fixing mold;
c. moving the movable die to the fixed die, so that the movable die and the fixed die are assembled, and a closed die cavity is formed by a first right-angle groove on the fixed die, a second right-angle groove on the movable die, the fixed die and the movable die;
d. starting the plastic injection device, injecting plastic into the closed die cavity, cooling, and completing injection molding of the short pipe fitting.
Through adopting above-mentioned technical scheme, provided a steel-plastic composite right angle pipe fitting shaping method, this pipe fitting shaping method is after taking Kong Gangtong inboard to install the plastic support piece, through the supporting role of plastic support piece and mandrel, has realized Kong Gangtong accurate location in the die cavity promptly, and afterwards, can realize the assembly of complete die cavity through simple adjustment movable mandrel and movable die, and this shaping method has simple operation, advantage that production efficiency is high.
The invention is further provided with: in the step a, the plastic support piece is a plastic clamping column which is inserted into the through hole on the side wall of the belt Kong Gangtong from outside to inside, the plastic clamping column is of a column structure with a thin inner section and a thick outer section, an annular clamping groove corresponding to the through hole on the side wall of the steel cylinder with the hole is arranged between the inner section and the outer section, and the length of the inner section is three times or more than three times of that of the outer section.
Through adopting above-mentioned technical scheme, adopted a thin outer thick plastic card post of section in, this plastic card post can realize through from outside-in grafting form that the plastic card post is spacing between area Kong Gangtong and the mandrel, has easy operation, the advantage that the function is showing.
The invention is further provided with: one or more through holes are reserved on the side wall of the strap Kong Gangtong between two adjacent plastic clamping columns, and the two adjacent plastic clamping columns are connected by adopting a transverse plastic connecting rod.
Through adopting above-mentioned technical scheme, the adjacent plastic card post adopts horizontal plastic connecting rod to connect to reserve one and more than one through-hole on the foraminiferous steel cylinder lateral wall between adjacent plastic card post, can improve the installation effectiveness of plastic support piece greatly, improve production efficiency.
The invention is further provided with: the inner section of the plastic clamping column is provided with a plurality of annular check rings, and the end part of the inner section of the plastic clamping column is provided with a point type supporting part. The point support is a three-point support, a four-point support or a multi-point support.
Through adopting above-mentioned technical scheme, set up a plurality of annular retaining ring at plastic card post inner segment, can effectively avoid the plastic card post to reveal the pipe fitting inboard material outside the pipe fitting, in addition, set up the tip of plastic card post inner segment into point type supporting part, point type supporting part can effectively guarantee the spacing effect of plastic card post to area Kong Gangtong on the one hand, on the other hand, can effectively avoid the plastic card post to expose on the nozzle stub surface by a large scale again, and then influence the sealing performance of nozzle stub.
The invention is further provided with: in the step c, a first right-angle groove, a fixed core mold and a movable core mold are arranged on the fixed mold, the first right-angle groove is arranged on the side wall of the fixed mold in an upward mode of a bending part, the fixed core mold is axially arranged in the first right-angle groove, the inserting end of the fixed core mold is positioned at the bending part of the first right-angle groove, the fixed end of the fixed core mold is fixed on a first plugging plate positioned at the outer side of the other end of the first right-angle groove, the movable core mold is axially arranged in a second right-angle groove of the first right-angle groove through a core mold moving mechanism, the movable core mold is arranged on a second plugging plate, the second plugging plate is fixed on the core mold moving mechanism, the movable core mold can axially move in the second right-angle groove of the first right-angle groove under the action of the core mold moving mechanism, the inserting end of the movable core mold is matched with a limiting groove of the inserting end of the fixed core mold, a second right-angle groove corresponding to the first right-angle groove is arranged on the movable mold, and grooves corresponding to the first plugging plate, the second plugging plate and the core mold moving mechanism are arranged at the outer sides of the two ends of the second right-angle groove.
Through adopting above-mentioned technical scheme, provide one kind with regard to simple structure, simple operation, the high short pipe fitting forming device of production efficiency.
The invention is further provided with: the axis of the limiting groove is perpendicular to the plane where the first right-angle groove is located, the limiting groove is a V-shaped groove or a U-shaped groove, and the opening of the limiting groove faces the axial direction of the movable core mold.
By adopting the technical scheme, the position relation of the limiting groove on the core fixing mold is limited, the stability of the combined movable core mold and the core fixing mold can be effectively ensured, the appearance aesthetic property of the formed short pipe piece can be effectively ensured, and the product quality is ensured.
The invention has the main beneficial effects that:
1. according to the forming method, after the plastic support piece is arranged on the inner side of the belt Kong Gangtong, the accurate positioning of Kong Gangtong in the die cavity is realized through the supporting action of the plastic support piece and the core die, and subsequently, the assembly of the complete die cavity can be realized by simply adjusting the movable core die and the movable die, so that the forming method has the advantages of convenience in operation and high production efficiency;
2. the invention adopts the plastic clamping column with the thin inner section and the thick outer section, and the plastic clamping column can realize the limit between the plastic clamping column pair belt Kong Gangtong and the core mould in a mode of being spliced from outside to inside, thereby having the advantages of simple operation and obvious function;
3. according to the invention, the adjacent plastic clamping columns are connected by adopting the transverse plastic connecting rods, and one or more through holes are reserved on the side wall of the steel cylinder with the holes between the adjacent plastic clamping columns, so that the installation efficiency of the plastic support piece can be greatly improved, and the production efficiency are improved;
4. according to the invention, the plurality of annular check rings are arranged at the inner section of the plastic clamping column, so that the plastic clamping column can be effectively prevented from leaking materials at the inner side of the pipe fitting to the outer side of the pipe fitting, in addition, the end part of the inner section of the plastic clamping column is provided with the point type supporting part, on one hand, the limiting effect of the plastic clamping column on the belt Kong Gangtong can be effectively ensured by the point type supporting part, and on the other hand, the plastic clamping column can be effectively prevented from being exposed on the surface of the short pipe fitting in a large area, and further the sealing performance of the short pipe fitting is influenced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of a stationary mold according to the present invention;
FIG. 2 is a schematic diagram of a movable mold according to the present invention;
figure 3 is a schematic view of the structure of a short tube according to the invention.
In the figure, 1, a fixed mold; 2. a movable mold; 3. a first right angle slot; 4. a core mold is fixed; 5. a movable core mold; 6. a limit groove; 7. a core mold moving mechanism; 8. a second right angle slot; 9. a first plugging plate; 10. a second blocking plate; 11. an inner layer of plastic; 12. a tape Kong Gangtong; 13. and (5) outer layer plastic.
Detailed Description
The technical scheme of the present invention will be clearly and completely described in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Embodiment one:
as shown in fig. 1 to 2, a steel-plastic composite right-angle short pipe molding device comprises a fixed mold 1 and a movable mold 2, wherein the fixed mold 1 is arranged on a bracket and is communicated with a plastic injection device, and the movable mold 2 is arranged at a position corresponding to the fixed mold 1 through a moving mechanism. The side wall of the fixed die 1 is provided with a first right-angle groove 3, a fixed core die 4 and a movable core die 5, the first right-angle groove 3 is arranged on the side wall of the fixed die in a mode that a bending part faces upwards, the fixed core die 4 is axially arranged in the first right-angle groove 3, an inserting end of the fixed core die 4 is positioned at the bending part of the first right-angle groove 3, a fixed end of the fixed core die 4 is fixed on a first blocking plate 9 positioned at the outer side of the other end of the first right-angle groove, the movable core die 5 is axially arranged in a second right-angle groove of the first right-angle groove 3 through a core die moving mechanism 7, the movable core die 5 is arranged on a second blocking plate 10, the second blocking plate 10 is fixed on the core die moving mechanism 7, the movable core die 5 can axially move in the second right-angle groove of the first right-angle groove 3 under the action of the core die moving mechanism 7, an inserting end of the movable core die 5 is matched with a limiting groove 6 of the inserting end of the fixed core die 4, the axis of the limiting groove 6 is mutually perpendicular to a plane of the first right-angle groove 3, the limiting groove 6 is a V-shaped groove or a U-shaped groove, and the movable core die 6 faces the axial direction of the opening of the limiting groove 6. The movable mould 2 is provided with a second right-angle groove 8 corresponding to the first right-angle groove 3, and grooves corresponding to the first plugging plate 9, the second plugging plate 10 and the core mould moving mechanism 7 are arranged on the outer sides of two ends of the second right-angle groove 8.
With reference to fig. 1 to 3, the method for forming the steel-plastic composite right-angle short pipe fitting by using the forming device comprises the following steps:
a. a plastic support is assembled on the inner side of the steel cylinder 12 with the hole;
b. sleeving a first support cylinder of a steel cylinder 12 with holes on a core fixing mold 4, adjusting a second support cylinder of the steel cylinder 12 with holes to a position corresponding to a movable core mold 5, inserting the movable core mold 5 into the second support cylinder of the steel cylinder 12 with holes until the inserting end of the movable core mold 5 is tightly attached to a limit groove 6 of the inserting end of the core fixing mold 4;
c. moving the movable die 2 to the fixed die 1, so that the movable die 2 and the fixed die 1 are assembled, and a closed die cavity is formed by a first right-angle groove 3 on the fixed die 1, a second right-angle groove 8 on the movable die 2, the fixed die core 4 and the movable die core 5;
d. starting the plastic injection device, injecting plastic into the closed die cavity, cooling, and completing injection molding of the short pipe fitting.
In the step a, the plastic support is a plastic clamping column inserted into the through hole on the side wall of the belt Kong Gangtong from outside to inside, the plastic clamping column is of a column structure with a thin inner section and a thick outer section, an annular clamping groove corresponding to the through hole on the side wall of the belt Kong Gangtong is arranged between the inner section and the outer section, and the length of the inner section is three times or more than three times that of the outer section. One or more through holes are reserved on the side wall of the perforated steel cylinder 12 between two adjacent plastic clamping columns, and the two adjacent plastic clamping columns are connected by adopting a transverse plastic connecting rod. The inner section of the plastic clamping column is provided with a plurality of annular check rings, and the end part of the inner section of the plastic clamping column is provided with a point type supporting part.
Claims (3)
1. The steel-plastic composite right-angle short pipe fitting forming method comprises the following steps:
a. assembling plastic supports on the inner side of the tape Kong Gangtong (12);
b. sleeving a first support tube of the belt Kong Gangtong (12) on the core fixing die (4), adjusting a second support tube of the belt Kong Gangtong (12) to a position corresponding to the movable core die (5), inserting the movable core die (5) into the second support tube of the belt Kong Gangtong (12) until the inserting end of the movable core die (5) is tightly attached to the limit groove (6) of the inserting end of the core fixing die (4);
c. moving the movable mould (2) to the fixed mould (1), so that the movable mould (2) and the fixed mould (1) are assembled, and a closed mould cavity is formed by a first right-angle groove (3) on the fixed mould (1) and a second right-angle groove (8) on the movable mould (2) and the fixed mould core (4) and the movable mould core (5);
d. starting a plastic injection device, injecting plastic into the closed die cavity, and cooling to complete injection molding of the short pipe fitting;
in the step a, the plastic support member is a plastic clamping column inserted into the through hole on the side wall of the belt Kong Gangtong (12) from outside to inside, the plastic clamping column is of a column structure with a thin inner section and a thick outer section, an annular clamping groove corresponding to the through hole on the side wall of the belt Kong Gangtong (12) is arranged between the inner section and the outer section, and the length of the inner section is three times or more than three times of that of the outer section; one or more through holes are reserved on the side wall of the belt Kong Gangtong (12) between two adjacent plastic clamping columns, and the two adjacent plastic clamping columns are connected by adopting a transverse plastic connecting rod; the plastic clamping column inner section is provided with a plurality of annular check rings, and the end part of the plastic clamping column inner section is provided with a point type supporting part.
2. The method for forming the steel-plastic composite right-angle short pipe fitting is characterized by comprising the following steps of: in the step c, a first right-angle groove (3), a fixed core mold (4) and a movable core mold (5) are arranged on the fixed mold (1), the first right-angle groove (3) is arranged on the side wall of the fixed mold (1) in an upward mode of a bending part, the fixed core mold (4) is axially arranged in the first right-angle groove (3), the inserted end of the fixed core mold (4) is positioned at the bending part of the first right-angle groove (3), the fixed end of the fixed core mold (4) is fixed on a first blocking plate (9) positioned at the outer side of the other end of the first right-angle groove, the movable core mold (5) is axially arranged in a second right-angle groove (3) through a core mold moving mechanism (7), the movable core mold (5) is arranged on a second blocking plate (10), the second blocking plate (10) is fixed on the core mold moving mechanism (7), the movable core mold (5) can be axially moved in the second right-angle groove (3) under the action of the core mold moving mechanism (7), and the fixed core mold (3) is axially moved in the second right-angle groove (3), and the fixed core mold (8) is axially moved in the second right-angle groove (3), and the corresponding to the first right-angle groove (8) is provided with the first right-angle groove (8), and the fixed core mold (8), and the movable core mold is axially moves in the right-angle groove (6 And grooves corresponding to the second plugging plate (10) and the mandrel moving mechanism (7).
3. The method for forming the steel-plastic composite right-angle short pipe fitting is characterized by comprising the following steps of: the axis of the limiting groove (6) is perpendicular to the plane where the first right-angle groove (3) is located, the limiting groove (6) is a V-shaped groove or a U-shaped groove, and an opening of the limiting groove (6) faces the axial direction of the movable core mold (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210134373.2A CN114536649B (en) | 2022-02-14 | 2022-02-14 | Forming method of steel-plastic composite right-angle short pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210134373.2A CN114536649B (en) | 2022-02-14 | 2022-02-14 | Forming method of steel-plastic composite right-angle short pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114536649A CN114536649A (en) | 2022-05-27 |
| CN114536649B true CN114536649B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210134373.2A Active CN114536649B (en) | 2022-02-14 | 2022-02-14 | Forming method of steel-plastic composite right-angle short pipe fitting |
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| Country | Link |
|---|---|
| CN (1) | CN114536649B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PT81163A (en) * | 1984-09-21 | 1985-10-01 | Billion Sa | METHOD AND DEVICE FOR OVERMOLDING A SURROUNDING OF PRECISE DIMENSIONS ON THE PERFORMANCE OF A PLANAR OR GALBED PART WITH DIMENSIONAL TOLERANCES |
| JPH09201848A (en) * | 1996-01-30 | 1997-08-05 | Sekisui Chem Co Ltd | Production of lining pipe fitted with ring |
| JPH11300750A (en) * | 1998-04-20 | 1999-11-02 | Sekisui Chem Co Ltd | Tooling and molding method using the same |
| CN206780856U (en) * | 2017-04-24 | 2017-12-22 | 东莞市楚东电子科技有限公司 | A kind of nut casing mould for boot support bar |
| CN210308835U (en) * | 2019-06-07 | 2020-04-14 | 青岛民海模具机械有限公司 | Bent pipe metal mold convenient for demolding |
| WO2021043683A1 (en) * | 2019-09-02 | 2021-03-11 | Lanxess Deutschland Gmbh | Hollow-profile composite technology |
-
2022
- 2022-02-14 CN CN202210134373.2A patent/CN114536649B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PT81163A (en) * | 1984-09-21 | 1985-10-01 | Billion Sa | METHOD AND DEVICE FOR OVERMOLDING A SURROUNDING OF PRECISE DIMENSIONS ON THE PERFORMANCE OF A PLANAR OR GALBED PART WITH DIMENSIONAL TOLERANCES |
| JPH09201848A (en) * | 1996-01-30 | 1997-08-05 | Sekisui Chem Co Ltd | Production of lining pipe fitted with ring |
| JPH11300750A (en) * | 1998-04-20 | 1999-11-02 | Sekisui Chem Co Ltd | Tooling and molding method using the same |
| CN206780856U (en) * | 2017-04-24 | 2017-12-22 | 东莞市楚东电子科技有限公司 | A kind of nut casing mould for boot support bar |
| CN210308835U (en) * | 2019-06-07 | 2020-04-14 | 青岛民海模具机械有限公司 | Bent pipe metal mold convenient for demolding |
| WO2021043683A1 (en) * | 2019-09-02 | 2021-03-11 | Lanxess Deutschland Gmbh | Hollow-profile composite technology |
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| Publication number | Publication date |
|---|---|
| CN114536649A (en) | 2022-05-27 |
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