CN211917554U - Injection mold of superfine hollow plastic pipe - Google Patents
Injection mold of superfine hollow plastic pipe Download PDFInfo
- Publication number
- CN211917554U CN211917554U CN201922394483.9U CN201922394483U CN211917554U CN 211917554 U CN211917554 U CN 211917554U CN 201922394483 U CN201922394483 U CN 201922394483U CN 211917554 U CN211917554 U CN 211917554U
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- China
- Prior art keywords
- core
- injection mold
- hollow plastic
- mould
- shaping chamber
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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.)
- Expired - Fee Related
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- 238000002347 injection Methods 0.000 title claims abstract description 23
- 239000007924 injection Substances 0.000 title claims abstract description 23
- 229920003023 plastic Polymers 0.000 title claims abstract description 22
- 239000004033 plastic Substances 0.000 title claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 43
- 239000003292 glue Substances 0.000 claims abstract description 35
- 238000007493 shaping process Methods 0.000 claims abstract description 19
- 210000001503 joint Anatomy 0.000 claims abstract description 5
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000002788 crimping Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 11
- 238000001746 injection moulding Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Images
Abstract
The utility model discloses an injection mold of superfine hollow plastic tubing, including the last die sleeve group and the lower die sleeve group that are controlled to open and close, its characterized in that: go up the respective mould benevolence of mould cover group and lower mould cover group and be equipped with the shaping chamber that corresponds the product outer wall, this mould benevolence is equipped with the gluey runner of advancing that feeds into the shaping chamber along product length to one termination, and mould benevolence along product length to the other end with loose core the unit and dock mutually, loose core and advance gluey location slider income and hang empty butt joint in the shaping chamber, and mould benevolence is equipped with perpendicular to product runner to several rows of cooling tubes, keeps away from two rows of cooling tube interval increase of gluing the mouth. By applying the injection mold of the utility model, the injection molding process is optimized by adopting the cooling pipelines which are vertical to the product flow channel and are arranged according to the distance from the glue opening to the glue opening, the molding precision such as roundness, straightness and the like of the superfine thin-wall hollow pipe is improved, and the mirror surface effect of the inner wall and the outer wall is excellent; meanwhile, the difficulty of glue breaking and core pulling of the product is overcome by utilizing the sliding block insert, and the production efficiency is improved.
Description
Technical Field
The utility model relates to a mould institutional advancement especially relates to an injection mold for moulding plastics production superfine hollow plastic tubing.
Background
The injection molding production is an effective way for customizing various special-shaped parts in a large scale in batch, and the process is long-standing and has high efficiency, environmental protection and high quality. The injection molding process is an optimal process capable of meeting the processing and production of various non-standard special-shaped parts, and has the obvious advantages of one-step molding and large-scale production compared with the traditional cutting and punching and milling operation modes.
The technical specification requirements and difficulty of the existing product of the superfine hollow plastic pipe are very strict. For example, the inner and outer wall surfaces are required to achieve a mirror A2 rating and the straightness is required to achieve 0.2. The inner wall of the product is in a tooth shape with radial wall thickness interval change, the wall thickness is 1.35mm, and the thin wall is 0.95 mm. But also needs to ensure the integral roundness of the hollow plastic pipe and the flatness of the flange. Therefore, the diameter of the product pipe fitting is as small as within 1.5cm, the inner wall structure is complex, glue solution needs to be fully injected in one cavity, and the design difficulty of the mould is considerable for ensuring the quality of a finished product.
Disclosure of Invention
The utility model aims at providing an injection mold of superfine hollow plastic tubing solves the guarantee yields problem of the production of moulding plastics of the hollow plastic tubing of superfine smooth pipe wall.
The utility model discloses realize the technical solution of above-mentioned purpose is, an injection mold of superfine hollow plastic tubing, including the last die sleeve group and the lower die sleeve group that are controlled to open and close, its characterized in that: go up the respective mould benevolence of mould cover group and lower mould cover group and be equipped with the shaping chamber that corresponds the product outer wall, mould benevolence is equipped with the gluey runner of advancing that feeds into the shaping chamber along product length to one end, and mould benevolence along product length to the other end with the unit of loosing core dock mutually, loose core and advance gluey location slider income sub-sky butt joint in the shaping chamber, just mould benevolence is equipped with the several rows of cooling tubes that perpendicular to product runner is to, keeps away from two rows of cooling tube interval increase of gluing the mouth.
Furthermore, five cooling pipes penetrate through the upper mold core of the upper mold sleeve group, four cooling pipes distributed from the glue opening to the far end are spaced at equal intervals, and the interval between the last two cooling pipes is increased to 1.5 times of the equal interval; the cooling pipes arranged on the lower die core of the lower die sleeve set are equal in number and aligned in position with the cooling pipes arranged on the upper die core.
Furthermore, the core pulling unit is connected with an independent water cooling assembly, and a water inlet and a water outlet of the water cooling assembly penetrate through the base head of the proximal end part of the core pulling and reach the outer end part of the core pulling.
Furthermore, the core pulling unit is provided with a first core pulling guide slider insert corresponding to the lower die sleeve set, the core pulling unit is provided with a second core pulling guide slider insert corresponding to the upper die sleeve set, and the two core pulling guide slider inserts are vertically inclined to the compression joint surface and compressed in place towards the molding cavity under the compression joint state.
Furthermore, a buffer cylinder is arranged on the outer side of the core pulling unit.
Further, the core pulling and molding cavity is set to be a smooth surface, and the polishing grade is above A2.
Furthermore, the glue feeding positioning slide block insert is movably connected between the two die cores and is externally connected with a rebound slide block assembly in a linkage manner, the rebound slide block assembly consists of a first glue feeding guide slide block insert, a draw bar, a locating plate and a reset spring, the locating plate and the lower die core are positioned at intervals, the draw bar is connected to the locating plate in a penetrating manner, one end of the draw bar is connected to the first glue feeding guide slide block insert, and the other end of the draw bar is connected with the reset spring in a sleeved manner; go up the die sleeve group and be equipped with towards the vertical slope of briquetting and composition surface that first advance gluey direction slider income son swing joint, under the briquetting engaged state advance gluey location slider income son targets in place towards the shaping chamber butt, under the briquetting detached state advance gluey location slider income son is driven in reset spring automatic disengagement shaping chamber.
Use the utility model discloses an injection mold possesses substantive characteristics and progressive: the injection mold adopts the cooling pipelines which are vertical to a product flow passage and are arranged at intervals according to the distance from a glue opening to the glue opening, so that the injection molding process is optimized, the molding precision of the superfine thin-wall hollow pipe, such as roundness, straightness and the like, is improved, and the mirror surface effect of the inner wall and the outer wall is excellent; meanwhile, the difficulty of glue breaking and core pulling of the product is overcome by utilizing the sliding block insert, and the production efficiency is improved.
Drawings
Fig. 1 is an overall exploded view of the injection molding glue feeding structure of the present invention.
Fig. 2 is a partially enlarged schematic view of the glue injection structure shown in fig. 1.
Detailed Description
The following detailed description is made of specific embodiments of the present invention with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and grasp, and thus make a clearer definition of the protection scope of the present invention.
The utility model discloses the designer is to aforementioned superfine hollow plastic tubing a great deal of difficult point on injection moulding, for example require length to linear type and radial circularity under the ultra-thin condition of pipe wall, and the mirror surface smoothness degree of inside and outside wall etc. through the experience of undertaking the injection moulding production trade for a plurality of years, and the convection current way and advance gluey mouthful of institutional advancement innovation have provided a novel injection mold who optimizes to the breakthrough can promote the product yields by a wide margin.
As shown in fig. 1 and 2, the injection mold for the ultra-fine hollow plastic pipe comprises an upper mold sleeve 2 and a lower mold sleeve 1 which are controlled to open and close, wherein the two sleeves do not refer to a specific part shown in the figure, and are more generally a general term of the upper mold and the lower mold, that is, the upper mold base and various functional components on the periphery and the inside of the upper mold base are correspondingly assembled, and the lower mold is similarly assembled. As an innovative point, the respective mold cores of the upper mold sleeve group and the lower mold sleeve group are provided with forming cavities corresponding to the outer wall of the product. Namely, the upper mold core 3 is provided with a long strip-shaped round groove-shaped forming end surface 31, the lower mold core 4 is provided with a long strip-shaped round groove-shaped forming end surface 41, and the two phases are spliced to form the outer frame of the forming cavity. The mould benevolence is equipped with the gluey runner 34 of advancing that feeds into the shaping chamber along the one end of product length direction, and mould benevolence along the other end of product length direction and the unit 6 butt joint of loosing core, and it is unsettled butt joint in the shaping chamber to loose core 61 and advance gluey location slider income 7, looses core and establishes to smooth surface in the shaping chamber, and polishing grade A2 is above. Thereby forming a complete molding cavity. And the mold core is provided with a plurality of rows of cooling pipes 51 vertical to the flow direction of the product, and the distance between the two rows of cooling pipes far away from the glue opening is increased. The pressure and the flow rate of the glue solution far away from the glue opening are smaller, so that the far-end glue shortage or roundness unbalance increase of the hollow plastic pipe formed by premature cooling and forming of the glue solution far away from the glue opening is prevented, the distribution distance of the cooling pipes at the far ends is increased, and the strong cooling is only arranged at the end part of the product pipe.
As will be understood from the more detailed aspect, five cooling pipes are arranged in the upper mold core 3 in a penetrating way, the four cooling pipes distributed from the glue opening to the far end are equally spaced, and the distance between the last two cooling pipes is increased to 1.5 times of the equal spacing; the cooling pipes arranged on the lower die core of the lower die sleeve set are equal in number and aligned in position with the cooling pipes arranged on the upper die core. Meanwhile, the core-pulling unit 6 is connected with an independent water-cooling component 52, and a water inlet and a water outlet of the water-cooling component 52 are connected with a proximal end base head of the core-pulling unit in a penetrating manner and directly reach the outer end part of the core-pulling unit. On one hand, the core pulling cooling device is distributed towards the cooling pipe at intervals in a discrete mode along the product flow channel, and meanwhile, the core pulling cooling device is used for linearly cooling the product from the inside of the product, so that the forming straightness is reliably guaranteed. On the other hand, the cooling pipe is in a semi-surrounding product flow passage in the upper direction and the lower direction, so that uniform cooling in the radial direction is realized, and the forming roundness is guaranteed.
In addition to the cooling design, the injection mold needs to tightly joint the core pulling and glue feeding positioning slide block insert in the molding cavity after the upper and lower mold sleeve sets are controlled to be closed, so that the flash at the end part of the thin-wall superfine tube is avoided. Therefore, this unit of loosing core 6 corresponds the lower mould cover and is equipped with first guide slide of loosing core and inserts 62, and unit of loosing core 6 corresponds the upper mould cover and is equipped with second guide slide of loosing core and inserts 63, and the crimping face B1 of two guide slide of loosing core inserts is vertical to slope and the crimping joint state down first guide slide of loosing core inserts 62 of loosing core compress tightly to the shaping chamber and target in place to promote to loose core 61 crimping inseparable. The core-pulling unit 6 is also provided with a positioning press block 65 corresponding to the water-cooling component 52 and a traction press block 64 corresponding to the core-pulling pin joint linkage.
In addition, in order to prevent the formed plastic pipe 9 from being damaged by the violent and quick core pulling, a buffer cylinder 66 is arranged outside the core pulling unit, and the first core pulling guide slide block insert can abut against the first core pulling guide slide block insert when the end of the core pulling stroke is approached and effectively reduces the impact force.
The glue feeding positioning slide block insert 7 is movably connected between the two die cores and is linked with a rebound slide block assembly externally, the rebound slide block assembly is composed of a first glue feeding guiding slide block insert 81, a draw bar 82, a positioning plate 83 and a return spring 84, wherein the positioning plate 83 and the lower die core are positioned and arranged at intervals (the lower die sleeve set is used as a basic connecting piece), the draw bar 82 is connected in the positioning plate 83 in a penetrating manner, one end of the draw bar is connected with the first glue feeding guiding slide block insert 81, the other end of the draw bar is connected with the return spring 84 in a sleeved manner, and the first glue feeding guiding slide block insert and the glue feeding positioning slide block insert are. This go up die sleeve group 1 and be equipped with towards first advance gluey guide slide income son swing joint's briquetting 85 and the composition surface is vertical to the slope, two income son overcome reset spring's contractile force and compress tightly to the shaping chamber in step under the briquetting 85 joint state to joint mouth place terminal surface, guarantee flange face circularity. Under the action of the contraction force of the return spring in the state that the pressing block is separated, the glue feeding positioning sliding block insert is driven to automatically separate from the molding cavity, so that the mold opening is realized, and the sliding block glue removing opening is automatically utilized.
Use the utility model discloses an injection mold possesses substantive characteristics and progressive: the injection mold adopts the cooling pipelines which are vertical to a product flow passage and are arranged at intervals according to the distance from a glue opening to the glue opening, so that the injection molding process is optimized, the molding precision of the superfine thin-wall hollow pipe, such as roundness, straightness and the like, is improved, and the mirror surface effect of the inner wall and the outer wall is excellent; meanwhile, the difficulty of glue breaking and core pulling of the product is overcome by utilizing the sliding block insert, and the production efficiency is improved.
In summary, the detailed description of the features of the embodiments is intended to enhance the understanding of the design of the injection mold of the present invention, and is not intended to limit the scope or the variability of the application of the patent. Therefore all be for the equivalent or approximate structure transform of the above-mentioned embodiment of the utility model discloses can realize the utility model discloses purpose design scheme should all be regarded as belonging to the utility model discloses a protection of patents scope.
Claims (7)
1. The utility model provides an injection mold of superfine hollow plastic tubing, includes the last die sleeve group and the lower die sleeve group that are controlled to open and close, its characterized in that: go up the respective mould benevolence of mould cover group and lower mould cover group and be equipped with the shaping chamber that corresponds the product outer wall, mould benevolence is equipped with the gluey runner of advancing that feeds into the shaping chamber along product length to one end, and mould benevolence along product length to the other end with the unit of loosing core dock mutually, loose core and advance gluey location slider income sub-sky butt joint in the shaping chamber, just mould benevolence is equipped with the several rows of cooling tubes that perpendicular to product runner is to, keeps away from two rows of cooling tube interval increase of gluing the mouth.
2. An injection mold for an ultrafine hollow plastic pipe according to claim 1, wherein: five cooling pipes penetrate through an upper mould core of the upper mould sleeve set, four cooling pipes distributed from the glue opening to the far end are spaced at equal intervals, and the interval between the last two cooling pipes is increased to 1.5 times of the equal interval; the cooling pipes arranged on the lower die core of the lower die sleeve set are equal in number and aligned in position with the cooling pipes arranged on the upper die core.
3. An injection mold for an ultrafine hollow plastic pipe according to claim 1, wherein: the core pulling unit is connected with an independent water cooling assembly, and a water inlet and a water outlet of the water cooling assembly penetrate through a proximal end base head of the core pulling and directly reach the outer end of the core pulling.
4. An injection mold for an ultrafine hollow plastic pipe according to claim 1, wherein: the unit of loosing core corresponds the lower mould cover set and is equipped with first guide slide of loosing core and goes into son, and the unit of loosing core corresponds and goes up the mould cover set and be equipped with the second guide slide of loosing core and go into son, and two vertical crimping faces of loosing core guide slide income son are to slope and crimping joint state down first guide slide of loosing core go into son and compress tightly target in place to the shaping chamber.
5. An injection mold for an ultrafine hollow plastic pipe according to claim 1, wherein: and a buffer cylinder is arranged on the outer side of the core pulling unit.
6. An injection mold for an ultrafine hollow plastic pipe according to claim 1, wherein: the core pulling and forming cavity is set to be a smooth surface, and the polishing grade is more than A2.
7. An injection mold for an ultrafine hollow plastic pipe according to claim 1, wherein: the glue feeding positioning slide block insert is movably connected between the two die cores and is externally connected with a rebound slide block assembly in a linkage manner, the rebound slide block assembly consists of a first glue feeding guide slide block insert, a draw bar, a locating plate and a reset spring, the locating plate and the lower die core are positioned at intervals, the draw bar is connected to the locating plate in a penetrating manner, one end of the draw bar is connected to the first glue feeding guide slide block insert, and the other end of the draw bar is connected with the reset spring in a sleeved manner; go up the die sleeve group and be equipped with towards the vertical slope of briquetting and composition surface that first advance gluey direction slider income son swing joint, under the briquetting engaged state advance gluey location slider income son targets in place towards the shaping chamber butt, under the briquetting detached state advance gluey location slider income son is driven in reset spring automatic disengagement shaping chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922394483.9U CN211917554U (en) | 2019-12-27 | 2019-12-27 | Injection mold of superfine hollow plastic pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922394483.9U CN211917554U (en) | 2019-12-27 | 2019-12-27 | Injection mold of superfine hollow plastic pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211917554U true CN211917554U (en) | 2020-11-13 |
Family
ID=73327025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922394483.9U Expired - Fee Related CN211917554U (en) | 2019-12-27 | 2019-12-27 | Injection mold of superfine hollow plastic pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211917554U (en) |
-
2019
- 2019-12-27 CN CN201922394483.9U patent/CN211917554U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |