CN108466409B - Injection mold with uniform wall thickness for glue feeding of slender inserts - Google Patents
Injection mold with uniform wall thickness for glue feeding of slender inserts Download PDFInfo
- Publication number
- CN108466409B CN108466409B CN201810373125.7A CN201810373125A CN108466409B CN 108466409 B CN108466409 B CN 108466409B CN 201810373125 A CN201810373125 A CN 201810373125A CN 108466409 B CN108466409 B CN 108466409B
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- insert
- mold
- wall thickness
- plate
- pressing
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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
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an injection mold with uniform wall thickness for feeding a slender insert, which at least comprises a mold frame, an upper mold plate and a lower mold plate, wherein the upper mold plate and the lower mold plate are arranged on the mold frame; the mould frame is also provided with a slender insert which is driven by a driving device to move back and forth along the central axis of the mould cavity and a positioning component which is used for positioning the insert in the mould cavity, so that the product is injection molded and the wall thickness of the molded product is ensured to be uniform. The beneficial effects of the invention are mainly as follows: simple structure, the design is exquisite, can avoid going into circumstances such as son skew when moulding plastics through setting up of locating component and take place, ensures the precision requirement of injection moulding product.
Description
Technical Field
The invention relates to an injection mold, in particular to an injection mold with uniform wall thickness for feeding glue to an elongated insert.
Background
In the injection molding process, the plastic material is usually melted at a high temperature and then injected into a mold by special equipment, and a product is molded by a mold cavity formed by matching an upper mold with a lower mold in the mold. When the product to be molded has an elongated hole, an elongated cylindrical insert is correspondingly inserted into the mold. However, since the plastic material is generally injected into the mold by high pressure, if the insert has a slim structure, elastic deformation or deflection is easily generated due to impact of the plastic material, and thus, errors may occur in the precision of the molded product. Typically, such errors are acceptable when the molded product is large or the accuracy requirements are not high. However, when the molded product is small or the position accuracy and straightness of the elongated hole are high, the molded product of the mold cannot meet the requirements.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an injection mold with uniform wall thickness for feeding glue to an elongated insert.
The aim of the invention is achieved by the following technical scheme:
the injection mold comprises a mold frame, an upper mold plate and a lower mold plate, wherein the upper mold plate and the lower mold plate are arranged on the mold frame, an upper mold core is arranged on the upper mold plate, a lower mold core is arranged on the lower mold plate, the upper mold core and the lower mold core are mutually matched to form a mold cavity of a product, and the mold frame is provided with a glue inlet communicated with the mold cavity through a runner arranged on the upper mold plate; the mould frame is also provided with a slender insert which is driven by a driving device to move back and forth along the central axis of the mould cavity and a positioning component which is used for positioning the insert in the mould cavity, so that the product is injection molded and the wall thickness of the molded product is ensured to be uniform.
Preferably, the driving device at least comprises a driving cylinder fixedly arranged on the die carrier, a connecting block is fixed on a cylinder shaft of the driving cylinder, and the insert is fixedly arranged on the connecting block.
Preferably, the positioning assembly comprises an upper top assembly arranged at the bottom of the insert and applying an upward force to the upper top assembly, and a lower pressing assembly arranged at the top of the insert and applying a downward force to the lower top assembly.
Preferably, the upper top assembly comprises an upper top cylinder fixedly arranged on the lower template, an upper top plate is fixedly arranged on a cylinder shaft of the upper top cylinder, a first wedge-shaped groove is arranged on the upper top plate, and the height of the first wedge-shaped groove is equal to the wall thickness of the product; an upper ejector rod penetrating through the lower die plate and the lower die core is further arranged on the first wedge-shaped groove, and when the upper ejector rod is arranged on the upper top plate, the upper surface of the upper ejector rod is clung to the insert; when the upper ejector rod is arranged on the first wedge-shaped groove, the distance between the upper surface of the upper ejector rod and the insert is equal to the wall thickness of the product.
Preferably, the bottom of the upper ejector rod is spherical.
Preferably, a gasket is fixedly arranged at the bottom of the upper ejector rod, a spring is sleeved on the upper ejector rod, and the spring is fixedly connected with the gasket.
Preferably, the pressing component comprises a pressing cylinder fixedly arranged on the upper template, a lower pressing plate is fixedly arranged on a cylinder shaft of the pressing cylinder, a second wedge-shaped groove is arranged on the lower pressing plate, and the height of the second wedge-shaped groove is equal to the wall thickness of the product; a lower pressing rod penetrating through the upper die plate and the upper die core is further arranged on the second wedge-shaped groove, and when the lower pressing rod is placed on the lower pressing plate, the lower surface of the lower pressing rod is clung to the insert; when the pressing rod is placed on the second wedge-shaped groove, the distance between the lower surface of the pressing rod and the insert is equal to the wall thickness of the product.
Preferably, the top of the pressing rod is spherical.
Preferably, a gasket is fixedly arranged on the top of the pressing rod, a spring is sleeved on the pressing rod, and the spring is fixedly connected with the gasket.
Preferably, the upper template and the lower template are also provided with cooling waterways.
The beneficial effects of the invention are mainly as follows:
1. the structure is simple, the design is exquisite, and the applicability is wide;
2. the positioning component is arranged, so that the occurrence of situations such as insert deflection and the like during injection molding can be avoided, and the precision requirement of injection molded products is ensured;
3. the arrangement of the upper jacking component and the lower pressing component can realize the rapid pressing and releasing of the upper jacking rod on the insert, so that the working efficiency is improved;
4. the bottom of the upper ejector rod and the top of the lower compression rod are spherical, so that the sliding is more convenient, the friction can be reduced, and the service life of the die is prolonged;
5. the cooling waterway can improve the surface smoothness of the plastic product, reduce the surface marks and internal stress of the plastic product, accelerate the shaping of the product and improve the production efficiency.
Drawings
The technical scheme of the invention is further described below with reference to the accompanying drawings:
fig. 1: a first-direction perspective view of the invention;
fig. 2: the second-direction perspective schematic diagram of the invention is that at this time, the die carrier, the upper die plate and the lower die plate are removed;
fig. 3: the third-direction perspective schematic diagram of the invention is that at this time, the die carrier, the upper die plate, the lower die plate and the upper die core are removed;
fig. 4: the third-direction perspective schematic diagram of the invention is that at this time, the die carrier, the upper die plate, the lower die plate, the upper die core and the lower die core are removed;
fig. 5: an enlarged view of section a in fig. 4.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. The embodiments are not limited to the present invention, and structural, methodological, or functional modifications of the invention from those skilled in the art are included within the scope of the invention.
As shown in fig. 1 to 5, the invention discloses an injection mold with uniform wall thickness for feeding long and thin rubber into a mold frame 1, which at least comprises a mold frame 1, an upper mold plate 2 and a lower mold plate 3 which are arranged on the mold frame 1, wherein an upper mold core 21 is arranged on the upper mold plate 2, a lower mold core 31 is arranged on the lower mold plate 3, the upper mold core 21 and the lower mold core 31 are mutually matched to form a mold cavity 4 of a product, a rubber inlet 11 which is communicated with the mold cavity 4 through a runner arranged on the upper mold plate 2 is arranged on the mold frame 1, and the injection molding of the product is completed through the mutual matching of the rubber inlet 11, the runner arranged on the upper mold plate 2 and the mold cavity 4.
In the present invention, the mold frame 1 is further provided with an elongated insert 6 that is driven by the driving device 5 to move back and forth along the central axis of the mold cavity 4, specifically, the driving device 5 at least includes a driving cylinder 51 fixedly arranged on the mold frame 1, a connection block 52 is fixed on a cylinder axis of the driving cylinder 51, and the insert 6 is fixedly arranged on the connection block 52, however, the driving device 5 may also be other driving structures, which all belong to the protection scope of the present invention.
The design key point of the invention is as follows: the die carrier 1 is also provided with a positioning component 7 for positioning the insert 6 in the die cavity 4, so as to enable the product to be subjected to injection molding and ensure that the wall thickness of the molded product is uniform. Specifically, the positioning assembly 7 includes an upper top assembly 8 disposed at the bottom of the insert 6 and applying an upward force thereto, and a lower pressing assembly 9 disposed at the top of the insert 6 and applying a downward force thereto.
The upper top assembly 8 comprises an upper top cylinder 81 fixedly arranged on the lower die plate 3, an upper top plate 82 is fixedly arranged on a cylinder shaft of the upper top cylinder 81, a first wedge-shaped groove 83 is arranged on the upper top plate 82, and the height of the first wedge-shaped groove 83 is equal to the wall thickness of the product; the first wedge-shaped groove 83 is further provided with an upper ejector rod 84 penetrating through the lower die plate 3 and the lower die core 31, preferably, the bottom of the upper ejector rod 84 is in a ball shape, and the design of the spherical structure can reduce friction with the upper top plate 82, facilitate movement of the upper ejector rod, and greatly prolong service life of the upper ejector rod. Of course, the bottom of the upper ejector rod can be in other shapes, which belong to the protection scope of the invention. A spacer 85 is fixedly arranged at the bottom of the upper push rod 84, a spring 86 is further sleeved on the upper push rod 84, the spring 86 is fixedly connected with the spacer 85, deformation of the upper push rod 84 under long-time pressing can be avoided through the design of the spring 86 and the spacer 85, an original restoring force is given to the upper push rod 84, and in addition, the lower push rod 93 can bounce under the action force of the spring, so that the upper push rod 93 reaches a corresponding position.
The pressing component 9 comprises a pressing cylinder 91 fixedly arranged on the upper die plate 2, a lower pressing plate 92 is fixedly arranged on a cylinder shaft of the pressing cylinder 91, a second wedge-shaped groove is arranged on the lower pressing plate 92, and the height of the second wedge-shaped groove is equal to the wall thickness of the product; the second wedge-shaped groove is further provided with a pressing rod 93 penetrating through the upper die plate 2 and the upper die core 21, the top of the pressing rod 93 is in a ball shape, friction between the pressing rod and the upper top plate 82 can be reduced due to the design of a spherical structure, movement of the pressing rod is facilitated, and the service life of the pressing rod can be greatly prolonged. Of course, the bottom of the upper ejector rod can be in other shapes, which belong to the protection scope of the invention. A gasket is fixedly arranged on the top of the pressing rod 93, a spring 94 is further sleeved on the pressing rod 93, and the spring 94 is fixedly connected with the gasket. The design of the spring 94 and the spacer can prevent the pressing rod 93 from deforming under long-time pressing, giving the restoring force to the pressing rod 93, and the pressing rod 93 can bounce under the force of the spring to the corresponding position.
Preferably, the upper die plate 2 and the lower die plate 3 are also provided with cooling waterways, so that the design can greatly improve the surface smoothness of plastic products, reduce the surface marks and internal stress of the plastic products, ensure that the products are not shrunk and deformed, facilitate the demolding of the plastic products and accelerate the shaping of the products, thereby greatly improving the production efficiency.
In the following, the working process of the present invention will be briefly described, the driving cylinder 51 disposed on the mold frame 1 drives the insert 6 to extend into the mold cavity 4, at this time, the upper top cylinder 81 drives the upper top plate 82 to move back and forth, and when the upper top rod 84 is disposed on the upper top plate 82, the upper surface of the upper top rod 84 is closely attached to the insert 6; the lower pressure plate 92 is driven to move back and forth by the lower pressure cylinder 91, and when the upper ejector rod 84 is placed on the upper top plate 82, the upper surface of the upper ejector rod 84 is tightly attached to the insert 6, positioning of the insert 6 is completed, and product injection molding is started.
When the injection molding is performed by eighty percent, the upper top cylinder 81 drives the upper top plate 82 to move back and forth until the upper top rod 84 is placed on the first wedge-shaped groove 83, and the distance between the upper surface of the upper top rod 84 and the insert 6 is equal to the wall thickness of the product; the pressing cylinder 91 drives the pressing plate 92 to move back and forth until the pressing rod 93 is placed on the second wedge-shaped groove, the distance between the lower surface of the pressing rod 93 and the insert 6 is equal to the wall thickness of the product, and the injection molding and pressure maintaining are continued, so that the product has no hole site, and injection molding is completed.
The beneficial effects of the invention are mainly as follows:
1. the structure is simple, the design is exquisite, and the applicability is wide;
2. the positioning component is arranged, so that the occurrence of situations such as insert deflection and the like during injection molding can be avoided, and the precision requirement of injection molded products is ensured;
3. the arrangement of the upper jacking component and the lower pressing component can realize the rapid pressing and releasing of the upper jacking rod on the insert, so that the working efficiency is improved;
4. the bottom of the upper ejector rod and the top of the lower compression rod are spherical, so that the sliding is more convenient, the friction can be reduced, and the service life of the die is prolonged;
5. the cooling waterway can improve the surface smoothness of the plastic product, reduce the surface marks and internal stress of the plastic product, accelerate the shaping of the product and improve the production efficiency.
It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.
The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.
Claims (7)
1. Injection mold that long and thin income son advances gluey wall thickness is even, its characterized in that: the mold comprises a mold frame (1), an upper mold plate (2) and a lower mold plate (3) which are arranged on the mold frame (1), wherein an upper mold core (21) is arranged on the upper mold plate (2), a lower mold core (31) is arranged on the lower mold plate (3), the upper mold core (21) and the lower mold core (31) are mutually matched to form a mold cavity (4) of a product, and a glue inlet (11) which is communicated with the mold cavity (4) through a runner arranged on the upper mold plate (2) is arranged on the mold frame (1); the die carrier (1) is also provided with an elongated insert (6) which is driven by a driving device (5) to move back and forth along the central axis of the die cavity (4) and a positioning assembly (7) which is used for positioning the insert (6) in the die cavity (4) so as to enable the product to be injection molded and ensure that the wall thickness of the molded product is uniform;
the positioning assembly (7) comprises an upper top assembly (8) which is arranged at the bottom of the insert (6) and applies upward force to the insert, and a lower pressing assembly (9) which is arranged at the top of the insert (6) and applies downward force to the insert; the upper top assembly (8) comprises an upper top cylinder (81) fixedly arranged on the lower die plate (3), an upper top plate (82) is fixedly arranged on a cylinder shaft of the upper top cylinder (81), a first wedge-shaped groove (83) is formed in the upper top plate (82), and the height of the first wedge-shaped groove (83) is equal to the wall thickness of the product; an upper ejector rod (84) penetrating through the lower die plate (3) and the lower die core (31) is further arranged on the first wedge-shaped groove (83), and when the upper ejector rod (84) is arranged on the upper top plate (82), the upper surface of the upper ejector rod (84) is tightly attached to the insert (6); when the upper ejector rod (84) is placed on the first wedge-shaped groove (83), the distance between the upper surface of the upper ejector rod (84) and the insert (6) is equal to the wall thickness of the product; the pressing assembly (9) comprises a pressing cylinder (91) fixedly arranged on the upper die plate (2), a lower pressing plate (92) is fixedly arranged on a cylinder shaft of the pressing cylinder (91), a second wedge-shaped groove is formed in the lower pressing plate (92), and the height of the second wedge-shaped groove is equal to the wall thickness of the product; a lower pressing rod (93) penetrating through the upper die plate (2) and the upper die core (21) is further arranged on the second wedge-shaped groove, and when the lower pressing rod (93) is arranged on the lower pressing plate (92), the lower surface of the lower pressing rod (93) is tightly attached to the insert (6); when the pressing rod (93) is placed on the second wedge-shaped groove, the distance between the lower surface of the pressing rod (93) and the insert (6) is equal to the wall thickness of the product.
2. The injection mold of claim 1, wherein the elongated insert has a uniform wall thickness, and further comprising: the driving device (5) at least comprises a driving air cylinder (51) fixedly arranged on the die carrier (1), a connecting block (52) is fixed on an air cylinder shaft of the driving air cylinder (51), and the insert (6) is fixedly arranged on the connecting block (52).
3. The injection mold of claim 1, wherein the elongated insert has a uniform wall thickness, and further comprising: the bottom of the upper ejector rod (84) is in a ball shape.
4. The injection mold of claim 1, wherein the elongated insert has a uniform wall thickness, and further comprising: a gasket (85) is fixedly arranged at the bottom of the upper ejector rod (84), a spring (86) is further sleeved on the upper ejector rod (84), and the spring (86) is fixedly connected with the gasket (85).
5. The injection mold of claim 1, wherein the elongated insert has a uniform wall thickness, and further comprising: the top of the pressing rod (93) is in a ball shape.
6. The injection mold of claim 1, wherein the elongated insert has a uniform wall thickness, and further comprising: a gasket is fixedly arranged on the top of the pressing rod (93), a spring (94) is sleeved on the pressing rod (93), and the spring (94) is fixedly connected with the gasket.
7. The injection mold of claim 1, wherein the elongated insert has a uniform wall thickness, and further comprising: and cooling waterways are further arranged on the upper die plate (2) and the lower die plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810373125.7A CN108466409B (en) | 2018-04-24 | 2018-04-24 | Injection mold with uniform wall thickness for glue feeding of slender inserts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810373125.7A CN108466409B (en) | 2018-04-24 | 2018-04-24 | Injection mold with uniform wall thickness for glue feeding of slender inserts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108466409A CN108466409A (en) | 2018-08-31 |
| CN108466409B true CN108466409B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810373125.7A Active CN108466409B (en) | 2018-04-24 | 2018-04-24 | Injection mold with uniform wall thickness for glue feeding of slender inserts |
Country Status (1)
| Country | Link |
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| CN (1) | CN108466409B (en) |
Citations (10)
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|---|---|---|---|---|
| US4702873A (en) * | 1983-03-25 | 1987-10-27 | Ceraver, S.A. | Method of manufacturing a composite insulator |
| JP2003127185A (en) * | 1995-05-19 | 2003-05-08 | Denso Corp | Insert molding process and insert molding device |
| CN1735494A (en) * | 2002-10-18 | 2006-02-15 | 注射技术公司 | Interchangeable mold insert system |
| CN102653122A (en) * | 2012-03-21 | 2012-09-05 | 季伯青 | Drawn pin type injection mold |
| CN103640192A (en) * | 2013-12-29 | 2014-03-19 | 大连銮艺精密模塑制造有限公司 | Automobile sensor mold |
| CN103737860A (en) * | 2013-12-19 | 2014-04-23 | 中山市加贝五金模具有限公司 | Injection molding mold side core-pulling mechanism |
| CN103770289A (en) * | 2014-02-26 | 2014-05-07 | 昆山立讯精密模具有限公司 | Mould core-pulling mechanism |
| CN104476735A (en) * | 2014-11-24 | 2015-04-01 | 深圳创维精密科技有限公司 | Side core-pulling mechanism and injection mould |
| CN204749178U (en) * | 2015-07-07 | 2015-11-11 | 湘潭天汽模热成型技术有限公司 | Two -way liftout device of mould |
| CN208305645U (en) * | 2018-04-24 | 2019-01-01 | 德仕科技（深圳）有限公司 | It is elongated enter son into glue uniform wall thickness injection mold |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2625252B1 (en) * | 2016-01-18 | 2018-04-24 | Comercial de Útiles y Moldes, S.A. | Device for the demoulding of parts and mold comprising said device |
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2018
- 2018-04-24 CN CN201810373125.7A patent/CN108466409B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4702873A (en) * | 1983-03-25 | 1987-10-27 | Ceraver, S.A. | Method of manufacturing a composite insulator |
| JP2003127185A (en) * | 1995-05-19 | 2003-05-08 | Denso Corp | Insert molding process and insert molding device |
| CN1735494A (en) * | 2002-10-18 | 2006-02-15 | 注射技术公司 | Interchangeable mold insert system |
| CN102653122A (en) * | 2012-03-21 | 2012-09-05 | 季伯青 | Drawn pin type injection mold |
| CN103737860A (en) * | 2013-12-19 | 2014-04-23 | 中山市加贝五金模具有限公司 | Injection molding mold side core-pulling mechanism |
| CN103640192A (en) * | 2013-12-29 | 2014-03-19 | 大连銮艺精密模塑制造有限公司 | Automobile sensor mold |
| CN103770289A (en) * | 2014-02-26 | 2014-05-07 | 昆山立讯精密模具有限公司 | Mould core-pulling mechanism |
| CN104476735A (en) * | 2014-11-24 | 2015-04-01 | 深圳创维精密科技有限公司 | Side core-pulling mechanism and injection mould |
| CN204749178U (en) * | 2015-07-07 | 2015-11-11 | 湘潭天汽模热成型技术有限公司 | Two -way liftout device of mould |
| CN208305645U (en) * | 2018-04-24 | 2019-01-01 | 德仕科技（深圳）有限公司 | It is elongated enter son into glue uniform wall thickness injection mold |
Also Published As
| Publication number | Publication date |
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| CN108466409A (en) | 2018-08-31 |
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