CN108177311B - Injection molding device for injection molding piece without rotation stopping structure and with different screw pitches and double internal threads - Google Patents
Injection molding device for injection molding piece without rotation stopping structure and with different screw pitches and double internal threads Download PDFInfo
- Publication number
- CN108177311B CN108177311B CN201711457191.4A CN201711457191A CN108177311B CN 108177311 B CN108177311 B CN 108177311B CN 201711457191 A CN201711457191 A CN 201711457191A CN 108177311 B CN108177311 B CN 108177311B
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- injection molding
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- clamping
- rotating shaft
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut 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
- B29C45/2618—Moulds having screw-threaded mould walls
- B29C45/262—Moulds having screw-threaded mould walls provided with unscrewing drive means
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/42—Removing or ejecting moulded articles using means movable from outside the mould between mould parts, e.g. robots
- B29C45/4208—Removing or ejecting moulded articles using means movable from outside the mould between mould parts, e.g. robots and driven by the movable mould part
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- 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
- B29L2001/00—Articles provided with screw threads
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to an injection molding device for an injection molding piece with no rotation stopping structure and different screw pitches, wherein the injection molding piece is provided with an external thread and two internal threads with different screw pitches and is provided with a clamping structure, the injection molding device comprises a movable module with a front mold and a fixed module with two symmetrical sliding blocks and a rear mold, the front mold, the rear mold and the two sliding blocks are closed to form an injection molding cavity, the rear mold is a threaded rotating shaft, the fixed module is also provided with an ejection mechanism and a power mechanism of the threaded rotating shaft, the fixed module is provided with a clamping mechanism for limiting the clamping structure circumferentially, the threaded rotating shaft is a piston type double rotating shaft, the piston type double rotating shaft comprises an outer tube and an inner shaft which are sleeved inside and outside, the upper ends of the outer tube and the inner shaft are respectively provided with a first external thread and a second external thread which correspond to the two internal threads of the injection molding piece, the inner shaft is provided with a long-strip-shaped radial through hole which is axially arranged, a connecting rod penetrating the radial through hole is arranged inside the outer tube, and the connecting rod and the radial through hole are matched with the radial through hole to form a synchronous rotating unit and an axial sliding unit of the outer tube.
Description
Technical Field
The invention belongs to the technical field of injection molding, and particularly relates to an injection molding device for a double internal thread injection molding piece with a non-stop structure and different screw pitches.
Background
At present, a pipe fitting injection molding part with threads is produced, if the pipe fitting injection molding part is internally threaded, rotary demolding is required, and a product is required to be provided with a rotation stopping positioning structure; the external thread is generally provided with a half die, namely, the die cavity of the external thread is split, the structure is simple, and the demolding is convenient. For the injection molding pipe fitting that possesses internal and external screw thread simultaneously and two internal screw thread pitches are different, though rare, can be through the external screw thread of moulding plastics earlier in the prior art, and two internal screw thread can only satisfy the requirement that a screw thread was moulded plastics when moulding plastics, two internal screw threads can not realize synchronous drawing of patterns, need the secondary machine to process or manually get the screw thread mold insert mode and carry out perfect two internal screw thread, the internal and external screw thread of one shot forming does not just have the structure pipe fitting product of stopping, in addition, if there are two internal screw threads of different screw pitches in the pipe fitting, then can damage the minor pitch position through the rotatory drawing of patterns mode of single dabber, consequently, need to design injection molding device to possessing two internal screw thread pipe fittings of different screw pitches.
Disclosure of Invention
The invention overcomes the defects of the prior art, and provides the injection molding device for the double internal screw thread injection molding piece with different screw pitches, which can smoothly and atraumatically perform double internal screw thread rotary demolding of the injection molding piece with different screw pitches, and can realize one-time rotary demolding of the two internal screw threads with different screw pitches.
The specific technical scheme of the invention is as follows:
the injection molding device is used for an injection molding piece with no rotation stopping structure and different screw pitches, the injection molding piece is a pipe fitting provided with external threads and two internal threads with different screw pitches, the upper end of the pipe fitting is provided with a clamping structure, the injection molding device comprises a movable module with a front mold and a fixed module with two symmetrical sliding blocks and a rear mold, the front mold, the rear mold and the two sliding blocks are closed to form an injection molding cavity, the movable module is provided with an injection molding hole communicated with the injection molding cavity, the rear mold is a threaded rotating shaft used for rotary demolding, the fixed module is further provided with an ejection mechanism used for the injection molding piece and a power mechanism used for the threaded rotating shaft, the key point is that the fixed module is provided with a clamping mechanism used for limiting the circumference of the clamping structure, the threaded rotating shaft is a piston type double rotating shaft, the piston type double rotating shaft comprises an outer pipe and an inner shaft which are sleeved inside and outside, the outer pipe and the inner shaft are respectively provided with a first external thread and a second external thread which correspond to the two internal threads of the injection molding piece, the inner shaft is provided with a strip-shaped radial through hole which is arranged along the axial direction, the inner shaft is internally provided with a connecting rod which penetrates through the radial through hole, and the connecting rod which is matched with the through hole to form a rotation unit and an axial sliding unit.
The clamping mechanism comprises a power shovel arranged on the working end face of the movable module, a guide groove arranged on the working end face of the fixed module, and a manipulator sliding along the guide groove and provided with clamping jaws at the end part, wherein the clamping jaws are in a shape of being spliced and matched with an upper end clamping structure of an injection molding piece, the power shovel comprises a straight line section at the root part and an inclined section at the end part, a power groove for the power shovel to penetrate is formed in the manipulator, and the inclined section of the power shovel is matched with the power groove and forms a thrust unit of the manipulator by means of displacement of the movable module.
And a limiting spring for the manipulator is arranged at the outer end of the guide groove in the fixed module.
The inner shaft comprises a working section with a second external thread and an adjusting section with a radial through hole, and the working section and the adjusting section are respectively provided with a radial clamping groove and a radial clamping block which are in plug-in fit at the connecting position.
The beneficial effects of the invention are as follows: the invention carries out the shaping and demoulding of two internal threads with different screw pitches through the piston type double rotating shafts, the piston type double rotating shafts are an outer pipe and an inner shaft which are connected by virtue of a connecting rod and a radial through hole which are in sliding fit, the connecting rod and the radial through hole are matched to enable the outer pipe and the inner shaft to form synchronous rotation, as the screw pitches of a first external thread at the upper end of the outer pipe and a second external thread at the upper end of the inner shaft are different, the two external threads are different under the same rotating speed, the axial displacement is different, an axial sliding unit formed by the connecting rod and the strip-shaped radial through hole provides a sliding distance for the displacement difference, the problem that the small screw pitch external threads between the outer pipe and the inner shaft are easy to be damaged due to different screw pitches is solved, and each external thread can axially rotate and demould according to own screw pitch in the rotating process, so that the rotation demoulding of injection molding of two internal threads with different screw pitches is finally and smoothly completed;
based on the injection molding for the pipe fitting that possesses the external screw thread, it does not possess and prevents the rotatory structure of stopping of injection molding in rotatory drawing of patterns process, can produce the rotation force to the injection molding when outer tube and interior axle are rotatory, in order to avoid the rotatory drawing of patterns that the injection molding rotated and lead to failure, the chucking mechanism that sets up in the stator module can be used for the circumference of the joint structure that the injection molding upper end set up spacing, after the die sinking, the external screw thread shaping in the injection molding outline and drawing of patterns, the clamping jaw of the manipulator in the chucking mechanism is pushed to this joint structure position, realized going on smoothly fast of injection molding rotatory drawing of patterns process.
Drawings
FIG. 1 is a schematic view of an injection molding structure according to the present invention.
Fig. 2 is a cross-sectional view of fig. 1.
Fig. 3 is a schematic structural view of a threaded spindle according to the present invention.
Fig. 4 is a schematic structural view of a working end face of a movable module in an embodiment.
Fig. 5 is a schematic structural view of a working end face of a fixed mold block in an embodiment.
Fig. 6 is an enlarged schematic view of the structure of fig. 5 a.
Fig. 7 is a schematic structural view of the chucking mechanism in the embodiment.
Fig. 8 is a schematic view illustrating an operation state of the clamping structure in the embodiment.
Fig. 9 is a schematic diagram of a power mechanism in an embodiment.
Fig. 10 is a schematic structural view of an injection molding apparatus in an embodiment.
Fig. 11 is an enlarged schematic view of the structure of B in fig. 10.
FIG. 12 is a schematic view of an injection molded product ejected by an injection molding apparatus in an embodiment
In the drawing, 1, an injection molding piece, 101, an external thread, 102, a clamping structure, 103, a first internal thread, 104, a second internal thread, 2, a movable module, 201, a front mold, 3, a fixed module, 302, a sliding block, 4, an injection molding cavity, 5, an injection molding hole, 6, an outer pipe, 601, a first external thread, 602, a connecting rod, 603, a radial mounting hole, 7, an inner shaft, 701, a second external thread, 702, a radial through hole, 8, a power shovel, 801, a straight line section, 802, an inclined section, 9, a guide groove, 10, a manipulator, 1001, a clamping jaw, 1002, a power groove, 11, a limit spring, 12, a radial clamping groove, 13, a radial clamping block, 14, a driving motor, 15, a driven pulley, 16, a driving gear, 17, a driven gear, 18, a base, 19, a guide post, 20, a return spring, 21, a water stop needle, 22 and a connecting part.
Detailed Description
The invention relates to an injection molding device for an injection molding piece with no rotation stopping structure and different screw pitches, wherein the injection molding piece 1 is a pipe fitting provided with an external screw thread 101 and two internal screw threads with different screw pitches, the upper end of the pipe fitting is provided with a clamping structure 102, the injection molding device comprises a movable module 2 with a front mold 201 and a fixed module 3 with two symmetrical sliding blocks 302 and a rear mold, the front mold 201, the rear mold and the two sliding blocks 302 are closed to form an injection molding cavity 4, the movable module 2 is provided with an injection molding hole 5 communicated with the injection molding cavity 4, the rear mold is a screw thread rotating shaft for rotary demolding, the fixed module 3 is also provided with an ejection mechanism for the injection molding piece 1 and a power mechanism for the screw thread rotating shaft, the fixed module 3 is provided with a clamping mechanism for the circumferential limit of the clamping structure 102, the screw thread rotating shaft is a piston type double rotating shaft, the piston type double rotating shaft comprises an outer pipe 6 and an inner shaft 7 which are sleeved inside and outside, the outer pipe 6 and the inner shaft 7 are respectively provided with a first external screw thread 601 and a second external screw thread 701 which correspond to the two internal screw threads of the injection molding piece 1, the inner shaft end of the outer pipe 6 and the inner shaft 7 are respectively, the inner shaft 7 is provided with an axial through hole 602 which is arranged along the axial direction of a strip-shaped outer pipe 702, and a radial through hole 602 which is formed by the axial synchronous unit 602, and a radial through hole 602 which is arranged inside the connecting pipe 702 is arranged, and a radial through hole 702, and a radial through hole unit 702 is formed by the axial through hole 702.
In the specific embodiment, as shown in fig. 1 to 12, in order to improve the production efficiency of the injection molding piece, the injection molding device is prepared into two injection molding cavities 4, and two injection molding structures composed of a front mold 201, a rear mold and two sliding blocks 302 are symmetrically arranged, but are arranged in the same set of movable module 2 and fixed module 3, injection molding holes 5 in the movable module 2 are provided with herringbone flow dividing channels, and the two injection molding cavities 4 are communicated through the flow dividing channels;
the clamping mechanism comprises a power shovel 8 arranged on the working end surface of the movable module 2, a guide groove 9 positioned on the working end surface of the fixed module 3 and a manipulator 10 sliding along the guide groove 9 and provided with a clamping jaw 1001 at the end part, wherein the clamping jaw 1001 is in a shape of being in plug-in fit with the clamping structure 102 at the upper end of the injection molding piece 1, before the movable module 2 and the fixed module 3 are opened, the clamping jaw 1001 of the manipulator 10 tightly pushes up sliding blocks 302 at two sides of the injection molding cavity 4 from the side surface, the moving direction of the sliding blocks 302 is perpendicular to the moving direction of the manipulator 10, the power shovel 8 comprises a straight line section 801 at the root part and an inclined section 802 at the end part, the manipulator 10 is provided with a power groove 1002 for the power shovel 8 to penetrate, and the inclined section 802 of the power shovel 8 is matched with the power groove 1002 and forms a thrust unit of the manipulator 10 by means of the displacement of the movable module 2; a limiting spring 11 for a manipulator 10 is arranged at the outer end of the guide groove 9 in the fixed module 3;
based on the structure, the working process of the injection molding device is as follows:
the movable module 2 and the fixed module 3 are horizontally and transversely matched to open and close the molds, the pouring mode is a cold material channel side gate pouring mode, the injection holes 5 in the movable module 2 are used for injecting materials into the two injection cavities, after the injection is completed, the movable module 2 is opened upwards, the front mold 201 is lifted upwards while opening the mold, the two sliding blocks 302 in the fixed module 3 symmetrically slide open, the front mold 201 and the two sliding blocks 302 form the external threads 101 and the clamping structure 102 of the injection molding piece 1, the power shovel 8 moves upwards while the movable module 2 moves upwards, the straight line section 801 of the power shovel moves through the power groove 1002 of the manipulator 10, the power groove 1002 does not move, when the inclined section 802 moves to the position of the power groove 1002, the power groove 1002 moves towards the clamping structure 102 at the upper end of the injection molding piece 1 along the guide groove 9 under the compression of the inclined surface of the inclined section 802, the clamping jaw 1001 of the final manipulator 10 is clamped on the clamping structure 102 of the injection molding piece 1, the injection molding piece 1 is limited in the circumferential rotation direction, at this time, the circumferential limitation of the injection molding piece 1 without a rotation stopping structure is completed, technical support is provided for the subsequent rotation demolding of the screw thread rotating shaft, as the screw thread rotating shaft needs to keep better perpendicularity with the internal screw thread of the injection molding piece 1 during demolding rotation, when the injection molding piece 1 is axially inclined during rotation demolding, the internal screw thread of the injection molding piece 1 is damaged, the smooth progress of rotation demolding is prevented, in order to further improve the smoothness of rotation demolding, the clamping jaw 1001 adopts a groove structure form, two clamping side faces of the groove are in an outwards gradually expanding shape, an included angle of 5-8 degrees is formed between the two clamping side faces, and a rubber layer with the thickness of 1-2mm is fixedly adhered on the surface, the arrangement of the included angle and the rubber layer can enable the groove to be conveniently inserted into the clamping structure 102 of the injection molding piece, and the groove can be gradually clamped at two sides of the clamping structure 102 at the upper end of the injection molding piece 1, so that the injection molding piece 1 is firmly clamped, the circumferential rotation is limited, the swing in all directions is also limited by the clamping of the clamping jaw 1001, the rotation demolding between two internal threads with different screw pitches of the injection molding piece 1 and the outer tube 6 and the inner shaft 7 in the piston type double-rotating shaft can be smoothly carried out, and the two internal threads inside the injection molding piece 1 are not easy to be damaged by inclined offset demolding;
the power mechanism for rotating the threaded rotating shaft on the fixed module 3 comprises a driving motor 14, a belt transmission mechanism, a driving gear 16 arranged on the rotating shaft of the driven belt pulley 15 and two driven gears 17 arranged at the lower ends of two outer tubes 6 corresponding to two injection molding pieces 1, wherein one driving gear 16 is meshed with the two driven gears 17, the two driven gears 17 rotate in the same direction, the driven gears 17 rotate to drive the outer tubes 6 to rotate, the first external threads 601 are rotationally separated from the first internal threads 103 in the injection molding pieces 1, so that the first internal threads 103 are rotationally demolded, meanwhile, the pitch of the second external threads 701 is smaller than that of the first external threads 601 under the driving of the connecting rod 602 and the radial through holes 702, the axial moving speed of the outer tubes 6 is faster than that of the inner tubes 7 under the condition of synchronous rotation, due to the existence of the radial through holes 702 in a long shape, the outer tubes 6 can not generate axial tension on the inner shafts 7, when the second external threads 104 of the inner shafts 7 are rotationally separated from the second internal threads 104 of the injection molding pieces 701, the connecting rod 602 slides from the upper ends to the lower ends of the long external threads 104 in a radial direction, and the two inner threads of the injection molding pieces 1 are not damaged, and the inner threads of the injection molding pieces are rotationally and the inner threads are not damaged;
in order to be suitable for different distances between the first internal thread 103 and the second internal thread 104 in the injection molding piece 1, the inner shaft 7 comprises a working section with a second external thread 701 and an adjusting section with a radial through hole 702, the working section and the adjusting section are respectively provided with a radial clamping groove 12 and a radial clamping block 13 which are in plug fit at a connecting position, when the distance between the first internal thread 103 and the second internal thread 104 is lengthened, the longer working section is replaced, then the longer working section is plug-connected with the adjusting section, if the distance is reduced, the shorter working section is replaced, the shorter working section is plug-connected with the adjusting section, and the installation and the replacement are convenient; in order to facilitate the disassembly of the outer tube 6 and the inner shaft 7, the outer tube 6 is provided with a radial mounting hole 603, the connecting rod 602 is a pin shaft inserted into the radial mounting hole 603, and the pin shaft is ejected out through a thimble with a corresponding size during the disassembly, so that the outer tube 6 and the inner shaft 7 can be disassembled and separated immediately;
the bottom of the fixed module 3 is provided with a base 18, the fixed module 3 is provided with a guide hole, the base 18 is provided with a guide post 19 which is in sliding fit with the guide hole, a return spring 20 is further connected between the base 18 and the fixed module 3, the base 18 is further provided with a water stop needle 21 which stretches into the fixed module 3 and is in contact with a diversion channel, after injection molding is finished, the diversion channel can form a connecting part 22 for connecting two injection molding pieces 1, the fixed module 3 overcomes the elasticity of the return spring 20 and moves towards the base 18 along the guide post 19, at the moment, the water stop needle 21 pushes against the connecting part 22 between the two injection molding pieces 1, finally the injection molding products are ejected out, and then the fixed module 3 is reset under the action of the return spring 20.
Claims (2)
1. A device of moulding plastics for having not stopping structure, two internal screw threads of different pitch injection molding, injection molding (1) is for being provided with the pipe fitting of external screw thread (101) and two different internal screw threads of pitch, and the pipe fitting upper end is provided with joint structure (102), and injection molding device is including moving module (2) and fixed module (3) that have two symmetrical sliders (302) and rear mould that have front mould (201), rear mould and two sliders (302) closure form cavity (4) of moulding plastics, and moving module (2) are provided with cavity (4) communicating injection molding hole (5) of moulding plastics, and the rear mould is for being used for rotatory drawing of patterns's screw thread pivot, and fixed module (3) still are provided with the ejection mechanism that is used for injection molding (1) and the power device that is used for the screw thread pivot, its characterized in that: the fixed die block (3) is provided with a clamping mechanism for circumferentially limiting the clamping structure (102), the threaded rotating shaft is a piston type double rotating shaft, the piston type double rotating shaft comprises an outer tube (6) and an inner shaft (7) which are sleeved inside and outside, the upper ends of the outer tube (6) and the inner shaft (7) are respectively provided with a first external thread (601) and a second external thread (701) which correspond to two internal threads of the injection molding piece (1), the inner shaft (7) is provided with a strip-shaped radial through hole (702) which is axially arranged, the inside of the outer tube (6) is provided with a connecting rod (602) which penetrates through the radial through hole (702), and the connecting rod (602) and the radial through hole (702) are matched to form a synchronous rotating unit and an axial sliding unit of the outer tube (6) and the inner shaft (7); the clamping mechanism comprises a power shovel (8) arranged on the working end face of the movable module (2), a guide groove (9) arranged on the working end face of the fixed module (3) and a manipulator (10) sliding along the guide groove (9) and provided with a clamping jaw (1001) at the end part, wherein the clamping jaw (1001) is in a shape of being in plug-in fit with the clamping structure (102) at the upper end of the injection molding piece (1), the power shovel (8) comprises a straight line section (801) at the root part and an inclined section (802) at the end part, the manipulator (10) is provided with a power groove (1002) for the power shovel (8) to penetrate, and the inclined section (802) of the power shovel (8) is matched with the power groove (1002) and forms a thrust unit of the manipulator (10) by means of displacement of the movable module (2); the inner shaft (7) comprises a working section with a second external thread (701) and an adjusting section with a radial through hole (702), and the working section and the adjusting section are respectively provided with a radial clamping groove (703) and a radial clamping block (704) which are in plug-in fit at the connecting position.
2. The injection molding apparatus for non-stop, double-internally threaded injection molding of different pitches according to claim 1, wherein: and a limiting spring (11) for a manipulator (10) is arranged at the outer end of the guide groove (9) in the fixed die block (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457191.4A CN108177311B (en) | 2017-12-28 | 2017-12-28 | Injection molding device for injection molding piece without rotation stopping structure and with different screw pitches and double internal threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457191.4A CN108177311B (en) | 2017-12-28 | 2017-12-28 | Injection molding device for injection molding piece without rotation stopping structure and with different screw pitches and double internal threads |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108177311A CN108177311A (en) | 2018-06-19 |
| CN108177311B true CN108177311B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711457191.4A Active CN108177311B (en) | 2017-12-28 | 2017-12-28 | Injection molding device for injection molding piece without rotation stopping structure and with different screw pitches and double internal threads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108177311B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112060553A (en) * | 2020-07-27 | 2020-12-11 | 晋西工业集团有限责任公司 | Compression mold for nonmetal parts with threads at two ends |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09323343A (en) * | 1996-06-06 | 1997-12-16 | Sekigami Seisakusho:Kk | Mold |
| CN207240743U (en) * | 2017-12-28 | 2018-04-17 | 河北科力汽车零部件有限公司 | For the injection moulding apparatus without spin-ended structure, the double internal thread mouldings of different pitch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7121823B2 (en) * | 2004-08-24 | 2006-10-17 | Cheng Uei Precision Industry Co., Ltd. | Mold assembly for forming a plastic article having a complicated shape |
-
2017
- 2017-12-28 CN CN201711457191.4A patent/CN108177311B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09323343A (en) * | 1996-06-06 | 1997-12-16 | Sekigami Seisakusho:Kk | Mold |
| CN207240743U (en) * | 2017-12-28 | 2018-04-17 | 河北科力汽车零部件有限公司 | For the injection moulding apparatus without spin-ended structure, the double internal thread mouldings of different pitch |
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| Publication number | Publication date |
|---|---|
| CN108177311A (en) | 2018-06-19 |
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