CN108454033B - External thread core pulling structure - Google Patents
External thread core pulling structure Download PDFInfo
- Publication number
- CN108454033B CN108454033B CN201810335975.8A CN201810335975A CN108454033B CN 108454033 B CN108454033 B CN 108454033B CN 201810335975 A CN201810335975 A CN 201810335975A CN 108454033 B CN108454033 B CN 108454033B
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- CN
- China
- Prior art keywords
- core
- die
- product
- tooth
- hinge
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
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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
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an external thread core pulling structure, which comprises a power source, a transmission part, a hinge tooth core and an external tooth insert, wherein the external tooth insert is positioned and provided with an external thread forming part for forming external threads of a product, and the external thread forming part is all positioned in a movable die or a static die of a die; the power source drives the hinge die core to rotate through the transmission piece, the product is connected with the hinge die core and driven to rotate by the hinge die core, and the driven rotating direction of the product is approximately the same as the rotating direction of the product from the outer die insert. The product produced by the invention is molded at one time, and the outer tooth surface and the end surface attached by the screw thread are not provided with a die line, so that the outer tooth surface is smooth, the end surface attached by the screw thread is smooth, and the requirements of customers are well met. The device has the advantages of short injection molding time, excellent overall structure performance, smooth overall operation, simple structure, low cost, great improvement of production efficiency, and complete die opening, tooth reaming and workpiece taking.
Description
Technical Field
The invention belongs to the technical field of injection molding machinery, and particularly relates to an external thread core pulling structure.
Background
The plastic screw thread piece can be used for packaging bottle and tank products such as beverage bottles, detergent bottles, medicine bottles, oil tanks and the like, and also can be used for fixedly connecting pipe fitting parts. With the further popularization of plastic products in daily life and production, the plastic threaded parts form articles which are frequently contacted in daily life.
In injection molding of plastic articles, the external threads of the plastic screw cannot be removed from the mold core well after molding. The extraction method adopted at present is as follows: after the plastic part is molded, the slide block is pulled by the inclined guide post, and the slide block leaves the threaded part and then the plastic part is taken out. The extraction method can lead the thread surface and the end surface attached by the thread to have a die-locking line, thereby causing malposition, poor break, water leakage and other adverse consequences, and finally leading to the failure of normal use.
Disclosure of Invention
The invention aims to solve the problem that the existing slider guide post core pulling mode has the defect that a die-locking line is arranged on the thread surface and the end surface attached to the thread.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the invention provides an external thread core pulling structure which is used for taking out a product with external threads from a die, and comprises a power source, a transmission part, a hinge core and an external thread insert, wherein the external thread insert is positioned and provided with an external thread forming part for forming the external threads of the product, and the external thread forming part is all positioned in a movable die or a static die of the die; the power source drives the hinge die core to rotate through the transmission piece, the product is connected with the hinge die core and driven to rotate by the hinge die core, and the driven rotating direction of the product is approximately the same as the rotating direction of the product from the outer die insert. The power source is used for driving the hinge tooth mold core to rotate, so that the product is driven to rotate relative to the external thread forming part until the product is separated from the external tooth insert, and demolding is realized.
Further, the product is provided with an inner hole, the hinge tooth core is provided with a clamping part fixedly connected with the inner hole, and the clamping part rotates to drive the product to rotate. By means of the fitting mode of inserting connection and driving, the device has the advantages of being simple in structure and compact.
Furthermore, the inner hole on the product is an inner hexagonal hole, and the clamping part on the tooth-reaming core is an outer hexagonal shape. The inner hexagonal hole and the outer hexagonal clamping part can be obtained easily through the prior art, and the driving and rotating effects are good.
Further, the outer thread insert is disc-shaped, and the outer thread forming part is arranged at the center of the outer thread insert. The external thread forming part is arranged at the center of the external tooth insert so as to realize the symmetry of the final integral structure.
Furthermore, a concave cavity is formed in the movable die, the outer tooth insert is positioned in the concave cavity, and the end face, far away from the bottom surface of the concave cavity, of the outer tooth insert is approximately flush with the parting surface of the die.
Further, the number of the power sources is one, the number of the transmission parts, the number of the hinge tooth mold cores and the number of the outer tooth inserts are two, the two transmission parts are in driving connection with the power sources, and the power sources, the two transmission parts, the two hinge tooth mold cores and the outer tooth inserts form two groups of outer thread core-pulling structures. The two groups of external thread core-pulling structures are driven to work simultaneously by one power source, and the device has the advantages of high efficiency and cost saving.
Further, the two-tooth mold core and the two-tooth insert are both arranged symmetrically to the center of the mold.
Further, the transmission piece comprises a gear pair, a driving gear in the gear pair is in driving connection with the power source, and a driven gear in the gear pair is in driving connection with the reaming core.
Further, the transmission piece further comprises a transmission shaft, a chain and a chain wheel matched with the chain, the chain is in driving connection with the power source, the chain wheel drives the transmission shaft to rotate, and the transmission shaft drives the driving gear to rotate, so that the driving gear is in driving connection with the power source.
Further, the power source is a motor.
The invention adopts the technical scheme as above and has the following beneficial effects:
the product produced by the invention is molded at one time, and the outer tooth surface and the end surface attached by the screw thread are not provided with a die line, so that the outer tooth surface is smooth, the end surface attached by the screw thread is smooth, and the requirements of customers are well met. The device has the advantages of short injection molding time, excellent overall structure performance, smooth overall operation, simple structure, low cost, great improvement of production efficiency, and complete die opening, tooth reaming and workpiece taking.
Drawings
Fig. 1 is a schematic view of the product of this embodiment in a main view.
Fig. 2 is an enlarged schematic side view of the product of this embodiment.
Fig. 3 is a schematic sectional view of the first direction before die opening in the present embodiment.
Fig. 4 is a schematic sectional view of the second direction before die opening in the present embodiment.
Fig. 5 is a schematic sectional view of the first direction after the mold is opened in this embodiment.
Fig. 6 is a schematic sectional view of the second direction after the mold is opened in the present embodiment.
Detailed Description
For further illustration of the various embodiments, the invention is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present invention. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.
The invention will now be further described with reference to the drawings and detailed description.
The present invention is illustrated below by way of example as applied to a mold, but those skilled in the art can implement and appropriately adjust the present invention according to the actual application and should not be construed as limiting the present invention.
As shown in fig. 1 to 6, the external thread core pulling structure provided in this embodiment is used for taking out a product 1 with external threads from a mold, and includes a power source, a transmission member, a tooth core 2 and an external tooth insert 3, where the external tooth insert 3 is positioned and provided with an external thread forming portion (the external thread forming portion corresponds to the external thread core for forming the external threads of the product), and the external thread forming portion is located in a movable mold 4 or a static mold 5 of the mold (so that the occurrence of a mold closing and bonding line on the external thread surface of the product can be well avoided); the power source drives the hinge die core 2 to rotate through the transmission piece, the product 1 is connected with the hinge die core 2 and driven to rotate by the hinge die core 2, and the driven rotation direction of the product 1 is approximately the same as the rotation direction of the product 1 from the outer die insert 3. The power source is used for driving the hinge tooth mold core 2 to rotate and driving the product 1 to rotate relative to the external thread forming part until the product 1 is separated from the external tooth insert 3, so that demolding is realized.
The product to which this embodiment is directed includes an external thread portion and other complex structural portions, and the complex structure on the product makes it necessary to mold and take out the product conveniently by closing the moving mold and the fixed mold (a cavity for molding the complex structural portion cannot be provided only on the moving mold or the fixed mold), that is, the product to which the stud or the like can be directly molded on the fixed mold or the moving mold is not directed, and will not be described in detail here.
As shown in fig. 1 and 2, the product 1 has an inner hole 11, and the hinge pin 2 has a snap-in portion fixedly coupled to the inner hole 11, and the snap-in portion is inserted into the inner hole 11 and rotated, thereby driving the product 1 to rotate. By means of the fitting mode of inserting connection and driving, the device has the advantages of being simple in structure and compact. Preferably, the inner hole 11 of the product 1 is a hexagon socket, and the clamping part of the tooth core 2 is a hexagon socket. The inner hexagonal hole and the outer hexagonal clamping part can be obtained easily through the prior art, and the driving and rotating effects are good.
As shown in fig. 3 and 5, the external thread insert 3 has a disk shape, and an external thread forming portion is provided at the center of the external thread insert 3. The external thread forming part is arranged at the center of the external thread insert 3 to realize the symmetry of the final integral structure.
As shown in fig. 3 to 6, a cavity is formed in the movable mold 4, the outer dental insert 3 is positioned (fixed by screwing or the like, which will not be described in detail herein) in the cavity, and an end surface (i.e., an upper end surface) of the outer dental insert 3 away from the bottom surface of the cavity is substantially flush with the parting surface of the mold.
As shown in fig. 3-6, the number of the power sources is one, the number of the transmission parts, the hinge core 2 and the outer tooth insert 3 is two, the two transmission parts are in driving connection with the power sources, and the power sources, the two transmission parts, the two hinge core 2 and the outer tooth insert 3 form two groups of external thread core-pulling structures. The two groups of external thread core-pulling structures are driven to work simultaneously by one power source, and the device has the advantages of high efficiency and cost saving.
In this embodiment, the two-tooth core 2 and the two-tooth insert 3 are both disposed symmetrically with respect to the center of the mold.
As shown in fig. 3-6, the transmission comprises a gear pair, a driving gear 61 of which is in driving connection with the power source, and a driven gear 62 of which is in driving connection with the tooth core 2.
Further, the transmission member further comprises a transmission shaft 7, a chain 81 and a chain wheel 82 matched with the chain 81, the chain 81 is in driving connection with the power source, the chain wheel 82 drives the transmission shaft 7 to rotate, and the transmission shaft 7 drives the driving gear 61 to rotate, so that the driving gear 61 is in driving connection with the power source. Preferably, the power source is a motor (but not limited thereto, and other power devices may be used, and will not be described in detail herein).
Working principle: when the die is opened, the die parting surface fixed die 5 part is opened in place firstly by arranging the injection molding machine system and under the action of the injection molding machine die opening mechanism, the inclined guide post 100 acts on the slide block 101 under the action of the injection molding machine die opening mechanism, the inverted part of the product 1 on the slide block 101 is smoothly demolded, and the slide block 101 is retracted to a specified position. Under the control of the injection molding machine system, the injection molding machine motor is started. After the injection molding machine motor is started, the injection molding machine motor drives a chain wheel 82 through a chain 81, under the torque action of the chain wheel 82, the transmission shaft 7 is driven to rotate, the transmission shaft 7 transmits torque, the hinge die core 2 is driven to rotate through a gear pair, and under the reaction of the demoulding force, the product 1 is hinge-shaped in the outer die insert 3 to be demoulded. Under the action of the inertia force of the demolding force, the product 1 automatically falls off.
The product of the invention is molded at one time, and the outer tooth surface and the end surface attached by the screw thread are not provided with a die line, so that the outer tooth surface is smooth, the end surface attached by the screw thread is smooth, and the requirements of customers are well met. The device has the advantages of short injection molding time, excellent overall structure performance, smooth overall operation, simple structure, low cost, great improvement of production efficiency, and complete die opening, tooth reaming and workpiece taking.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides an external screw thread structure of loosing core for take out the product that has the external screw thread from the mould, its characterized in that: the die comprises a power source, a transmission part, a hinge tooth core and an outer tooth insert, wherein the outer tooth insert is positioned and provided with an outer thread forming part for forming the outer thread of a product, and the outer thread forming part is all positioned in a movable die or a fixed die of a die; the power source drives the hinge tooth core to rotate through the transmission piece, the product is connected with the hinge tooth core and driven to rotate by the hinge tooth core, and the driven rotation direction of the product is approximately the same as the rotation direction of the product from the outer tooth insert; the product is provided with an inner hole, the hinge tooth core is provided with a clamping part fixedly connected with the inner hole, and the clamping part rotates to drive the product to rotate; when the die is opened, the die parting surface and the fixed die part of the die are opened in place firstly by arranging the injection molding machine system and under the action of the injection molding machine die opening mechanism, the inclined guide pillar acts on the slide block under the action of the injection molding machine die opening mechanism, the inverted part of the product on the slide block is smoothly demolded, and the slide block is retracted to the designated position.
2. The externally threaded core-pulling structure according to claim 1, wherein: the inner hole on the product is an inner hexagonal hole, and the clamping part on the reaming core is in an outer hexagonal shape.
3. The externally threaded core-pulling structure according to claim 1, wherein: the outer tooth insert is disc-shaped, and the outer thread forming part is arranged at the center of the outer tooth insert.
4. The external thread core pulling structure according to claim 1 or 3, wherein: the movable die is provided with a concave cavity, the outer tooth insert is positioned and arranged in the concave cavity, and the end face of the outer tooth insert, which is far away from the bottom surface of the concave cavity, is approximately flush with the parting surface of the die.
5. The externally threaded core-pulling structure according to claim 1, wherein: the number of the power sources is one, the number of the transmission parts, the hinge tooth core and the number of the outer tooth inserts are two, the two transmission parts are in driving connection with the power sources, and the power sources, the two transmission parts, the two hinge tooth cores and the outer tooth inserts form two groups of external thread core-pulling structures.
6. The externally threaded core-pulling structure according to claim 5, wherein: the two-tooth mold core and the two-tooth insert are both symmetrical to the center of the mold.
7. The externally threaded core-pulling structure according to claim 5, wherein: the transmission piece comprises a gear pair, a driving gear in the gear pair is in driving connection with a power source, and a driven gear in the gear pair is in driving connection with the hinge tooth core.
8. The externally threaded core-pulling structure according to claim 7, wherein: the transmission piece further comprises a transmission shaft, a chain and a sprocket matched with the chain, the chain is in driving connection with the power source, the sprocket drives the transmission shaft to rotate, and the transmission shaft drives the driving gear to rotate, so that the driving gear is in driving connection with the power source.
9. The externally threaded core-pulling structure according to claim 1, wherein: the power source is a motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810335975.8A CN108454033B (en) | 2018-04-16 | 2018-04-16 | External thread core pulling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810335975.8A CN108454033B (en) | 2018-04-16 | 2018-04-16 | External thread core pulling structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108454033A CN108454033A (en) | 2018-08-28 |
| CN108454033B true CN108454033B (en) | 2023-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810335975.8A Active CN108454033B (en) | 2018-04-16 | 2018-04-16 | External thread core pulling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108454033B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006001199A (en) * | 2004-06-18 | 2006-01-05 | Denso Corp | Molding device |
| CN102666064A (en) * | 2010-02-06 | 2012-09-12 | 绿盖株式会社 | Green cap co ltd |
| CN202462807U (en) * | 2012-02-29 | 2012-10-03 | 宁波思迈工业科技有限公司 | Thread core-pulling and demoulding device nesting internal thread product injection mold |
| CN203557642U (en) * | 2013-08-11 | 2014-04-23 | 牟维军 | Mold for releasing interrupted thread by virtue of inclined sliding block |
| CN204487981U (en) * | 2015-03-05 | 2015-07-22 | 浙江黄岩红旗塑料模具厂 | There is the mould of plastics screw thread machine for quick operating structure improving transmission efficiency |
| CN205202034U (en) * | 2015-12-20 | 2016-05-04 | 黄俏嫦 | Novel thermos cup bowl cover injection mold |
| CN106584791A (en) * | 2016-12-24 | 2017-04-26 | 浙江工商职业技术学院 | Oil cylinder rack driving type coarse pitch internal thread disengaging mechanism |
| CN206510357U (en) * | 2016-12-05 | 2017-09-22 | 硕昌（上海）精密塑料制品有限公司 | A kind of core pulling structure for injection mold of Plastic Parts with Inner Thread |
| CN208084881U (en) * | 2018-04-16 | 2018-11-13 | 厦门市超日精密模具有限公司 | A kind of external screw thread pulled core structure |
-
2018
- 2018-04-16 CN CN201810335975.8A patent/CN108454033B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006001199A (en) * | 2004-06-18 | 2006-01-05 | Denso Corp | Molding device |
| CN102666064A (en) * | 2010-02-06 | 2012-09-12 | 绿盖株式会社 | Green cap co ltd |
| CN202462807U (en) * | 2012-02-29 | 2012-10-03 | 宁波思迈工业科技有限公司 | Thread core-pulling and demoulding device nesting internal thread product injection mold |
| CN203557642U (en) * | 2013-08-11 | 2014-04-23 | 牟维军 | Mold for releasing interrupted thread by virtue of inclined sliding block |
| CN204487981U (en) * | 2015-03-05 | 2015-07-22 | 浙江黄岩红旗塑料模具厂 | There is the mould of plastics screw thread machine for quick operating structure improving transmission efficiency |
| CN205202034U (en) * | 2015-12-20 | 2016-05-04 | 黄俏嫦 | Novel thermos cup bowl cover injection mold |
| CN206510357U (en) * | 2016-12-05 | 2017-09-22 | 硕昌（上海）精密塑料制品有限公司 | A kind of core pulling structure for injection mold of Plastic Parts with Inner Thread |
| CN106584791A (en) * | 2016-12-24 | 2017-04-26 | 浙江工商职业技术学院 | Oil cylinder rack driving type coarse pitch internal thread disengaging mechanism |
| CN208084881U (en) * | 2018-04-16 | 2018-11-13 | 厦门市超日精密模具有限公司 | A kind of external screw thread pulled core structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108454033A (en) | 2018-08-28 |
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