CN220219503U - Plastic mold and inclined ejection glue feeding structure thereof - Google Patents
Plastic mold and inclined ejection glue feeding structure thereof Download PDFInfo
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- CN220219503U CN220219503U CN202321179209.XU CN202321179209U CN220219503U CN 220219503 U CN220219503 U CN 220219503U CN 202321179209 U CN202321179209 U CN 202321179209U CN 220219503 U CN220219503 U CN 220219503U
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- runner
- area
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- glue feeding
- buffer
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- 239000004033 plastic Substances 0.000 title claims abstract description 21
- 239000003292 glue Substances 0.000 title claims description 111
- 238000002347 injection Methods 0.000 claims abstract description 51
- 239000007924 injection Substances 0.000 claims abstract description 51
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 230000007704 transition Effects 0.000 claims description 34
- 239000012535 impurity Substances 0.000 claims description 22
- 230000003139 buffering effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 abstract description 22
- 230000007547 defect Effects 0.000 abstract description 14
- 210000001503 joint Anatomy 0.000 abstract description 10
- 238000004513 sizing Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 description 12
- 238000001746 injection moulding Methods 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 5
- 238000004026 adhesive bonding Methods 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000012768 molten material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000012778 molding material Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a plastic mold and an obliquely ejecting and feeding structure thereof, wherein the obliquely ejecting and feeding structure comprises a feeding port in butt joint with an injection nozzle, a buffer runner and a pouring gate in butt joint with a mold core feeding port, wherein the feeding port is arranged at the feeding end of the buffer runner, the pouring gate is arranged at the discharging end of the buffer runner, the feeding end of the feeding port is smaller than the discharging end of the feeding port, the discharging end of the pouring gate is larger than the feeding end of the pouring gate, when molten sizing material enters the mold core, the molten sizing material diffuses towards two sides of the mold core feeding port when flowing, the front impact of the molten sizing material on the position of the mold core feeding port is reduced, the injection pressure is reduced, the generation of air marks is avoided, and the injection pressure, the injection speed, the injection temperature and the like are reduced in the injection process of the sizing material through the buffer runner before the molten sizing material is injected into the mold core, so that the molten sizing material has enough buffer effect from the high temperature injection nozzle to low Wen Moren, and the defects of product deformation, surface air marks, shrinkage and the like are overcome.
Description
Technical Field
The utility model relates to the technical field of plastic molds, in particular to an inclined ejection glue feeding structure.
Background
With the development of materials and manufacturing processes, plastic products are widely applied to various fields of medical treatment, aerospace, agricultural production and the like, so that not only is the development requirement of industry satisfied, but also the maturation and development of plastic mould technology are promoted. At present, plastic products are mainly manufactured by a plastic mold injection molding mode, and the molding mode has the advantages of high manufacturing efficiency, strong repeatability and the like.
However, there are still certain limitations in the manner of injecting glue into articles. For example: for products with higher surface quality requirements, a common glue feeding structure is easy to cause a series of defects of product appearance deformation, shrinkage, serious air marks at a pouring gate position and the like, and the product assembly and appearance experience are seriously affected. The problems are difficult to be solved by means of adjusting injection molding parameters, replacing materials and the like.
In addition, the existing glue feeding mode is easily influenced by the properties of plastic materials and the runner structure of a plastic mold, so that after products are molded, the surfaces have defects such as air marks, shrinkage, deformation and the like, and the main factors influencing the injection molding quality are as follows:
(1) The existing glue feeding mode is limited by the types of injection molding materials, namely, the same plastic mold can only be used for injection molding by one plastic material, and if the materials are replaced, the appearance size precision and the surface quality of the product are reduced;
(2) The existing glue feeding mode is limited by the color of the injection molding material, namely, the surface quality of the light-colored material is easy to control, and the defects of air marks, shrinkage and the like are more obvious after a series of dark-colored materials such as black and the like are molded;
(3) For fireproof flame-retardant injection molding materials, the materials have the defects of easy shrinkage, easy formation of air lines, easy deformation, easy carbonization, easy scorching and the like, and the existing glue feeding mode can not thoroughly solve the phenomenon;
(4) The existing glue feeding modes are various, but the same glue feeding mode cannot improve the plurality of injection molding defects of the product, so that the product reject ratio is high, and the product cost is also different due to different glue feeding modes.
There is thus a need for improvements and improvements in the art.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present utility model aims to provide an oblique ejection glue feeding structure, which can eliminate internal stress of a plastic mold, so as to improve some defects of the surface of a plastic product.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a structure is advanced to top to one side, includes with the mouth of gluing of injection nozzle butt joint, buffering runner and with the runner of mould benevolence income mouth of gluing butt joint, advance the mouth of gluing set up in the advance of buffering runner glues the end, the runner set up in the play of buffering runner glues the end, advance the mouth of gluing advance to glue the end and be less than advance the play of gluing the mouth and glue the end, the play of runner glues the end and is greater than the play of runner glues the end.
In the inclined ejection glue feeding structure, the buffer runner is provided with a glue feeding area, a transition runner area, a glue feeding area and a glue discharging area which are communicated in sequence, the glue feeding area is communicated with the glue feeding opening, the transition runner area is parallel to the glue feeding area, and the glue discharging area is communicated with the pouring gate.
In the inclined ejection glue feeding structure, the buffer flow channel is further provided with an impurity accumulation end, the impurity accumulation end is communicated with the glue feeding port, the impurity accumulation end is opposite to the transition flow channel area, and the tail end of the buffer flow channel is arc-shaped.
In the inclined ejection glue feeding structure, the buffer flow channel is further provided with a backflow end, and the backflow end is located at the tail end of the transition flow channel region and is communicated with the glue feeding region and the transition flow channel region.
In the oblique ejection glue feeding structure, the buffer runner is further provided with a buffer end, the buffer end is communicated with the pouring gate, and the buffer end is arranged opposite to the glue feeding area and the tail end of the buffer end is arc-shaped.
In the inclined ejection glue feeding structure, arc-shaped transition parts are arranged at the joints among the transition flow passage area, the backflow end and the glue feeding area.
In the inclined ejection glue feeding structure, the total height of the inclined ejection glue feeding structure is 20-30mm.
In the inclined ejection glue feeding structure, the heights of the transition flow passage area and the glue feeding area are the same.
In the inclined ejection glue feeding structure, the longitudinal section of the pouring gate is in a fan shape with a narrow upper part and a wide lower part.
A plastic mould, comprising an injection nozzle, a mould core for forming products and the inclined ejection glue feeding structure, wherein the inclined ejection glue feeding structure is arranged between the injection nozzle and the mould core.
Compared with the prior art, the plastic mold and the obliquely ejecting and feeding structure thereof provided by the utility model, wherein the obliquely ejecting and feeding structure comprises the feeding port which is in butt joint with the injection nozzle, the buffer runner, the pouring gate which is in butt joint with the mold core feeding port, the feeding end of the feeding port is smaller than the discharging end of the feeding port, the discharging end of the pouring gate is larger than the feeding end of the pouring gate, so that when molten rubber enters the mold core, the molten rubber diffuses towards two sides of the mold core feeding port when flowing, the front impact of the molten rubber at the position of the mold core feeding port is reduced, the injection pressure is reduced, the generation of air lines is avoided, and the injection pressure, the injection speed, the injection temperature and the like are reduced in the injection process of the molten rubber through the buffer runner before the molten rubber is injected into the mold core, so that the molten rubber has enough buffer effect from the high-temperature injection nozzle to Wen Moren so as to achieve temperature balance, thereby the defects of deformation, surface air lines, shrinkage and the like of the product are effectively reduced.
Drawings
Fig. 1 is a schematic diagram of a first cross-sectional structure of an oblique ejection adhesive feeding structure provided by the utility model.
Fig. 2 is a schematic diagram of a second cross-sectional structure of the oblique ejection adhesive feeding structure provided by the utility model.
Fig. 3 is a schematic diagram of a third cross-sectional structure of the oblique ejection adhesive feeding structure provided by the utility model.
Fig. 4 is a schematic structural diagram of the obliquely ejecting and feeding structure applied to a plastic mold.
The drawings are marked with the following description:
oblique ejection glue feeding structure 100, glue feeding port 1, buffer runner 2, glue feeding area 21, transition runner area 22, glue feeding area 23, glue discharging area 24, impurity accumulation end 25, backflow end 26, buffer end 27, pouring gate 3, total height H04, pouring gate height H0, glue feeding area height H1, interval H2, transition runner area height H3, glue feeding port height H4, plastic mold 200, injection nozzle 20, and mold insert 30
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It is noted that when an element is referred to as being "mounted," "secured," or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
It should be noted that, in the embodiments of the present utility model, terms such as left, right, up, and down are merely relative concepts or references to normal use states of the product, and should not be construed as limiting.
Referring to fig. 1, 2, 3 and 4, the proposed structure 100 includes a rubber inlet 1 abutting against an injection nozzle 20, a buffer runner 2 and a gate 3 abutting against a mold core 30, the rubber inlet 1 is disposed at a rubber inlet end of the buffer runner 2, the gate 3 is disposed at a rubber outlet end of the buffer runner 2, the rubber inlet 1 is smaller than the rubber outlet end of the rubber inlet 1, the rubber outlet end of the gate 3 is larger than the rubber inlet end of the gate 3, by changing the shapes of the rubber inlet 1 and the gate 3, when the molten rubber enters the mold core 30, the molten rubber diffuses toward two sides of the rubber inlet of the mold core 30, reducing the front impact of the molten rubber on the rubber inlet of the mold core 30, thereby reducing the injection pressure, avoiding the generation of air lines, and reducing the injection pressure, the injection speed, the injection temperature and the like of the molten rubber in the injection process by the buffer runner 2 before the molten rubber is injected into the mold core 30, so that the molten rubber is sufficiently low from the high temperature of the nozzle 20 to the inner side, thereby reducing the air line temperature Wen Moren, and reducing the effective deformation of the product, and the surface of the product, and the defect of the utility model.
Specifically, the longitudinal section of the gate 3 is in a sector shape with a narrow upper part and a wide lower part, and the main function of the gate is to make the injection temperature, the injection pressure and the injection speed reach the optimal critical values before the molten sizing material enters the mold core 30, so that the internal stress of the product is effectively reduced, and the defects of product deformation, surface air marks, shrinkage and the like are overcome. Moreover, the obliquely ejecting and feeding structure 100 can meet the normal production of various injection molding materials, and is not limited by a mold.
As shown in fig. 1 and 2, the buffer runner 2 has a glue inlet 21, a transition runner 22, a glue running 23 and a glue outlet 24, where the glue inlet 21 is communicated with the glue inlet 1, the transition runner 22 is parallel to the glue running 23, the glue outlet 24 is communicated with the gate 3, the transition runner 22 and the glue running 23 are transited by an arc transition section, and when injection molding is performed, molten glue sequentially enters the glue inlet 21, the transition runner 22, the glue running 23 and the glue running 24 through the glue inlet 1, finally flows to the gate 3, and injection molding is performed in the mold insert 30.
In an alternative embodiment, the buffer runner 2 further has an impurity accumulation end 25, the impurity accumulation end 25 is in communication with the glue inlet 1, the impurity accumulation end 25 is opposite to the transition runner area 22, and the end of the impurity accumulation end is arc-shaped, so that the molten glue material enters the glue inlet 21 through the glue inlet 1 during injection, and then is split into two parts and flows to the impurity accumulation end 25 and the transition runner area 22, at this time, the waste, the impurity, the initial material of the molten material in the injection nozzle 20 and the like can be stored in the impurity accumulation end 25 due to the difference of specific gravity and the molten material, and the rest part can continue to flow to the transition runner area 22, thereby achieving the effect of first impurity accumulation, and playing the role of buffering through the arc-shaped end.
The buffer runner 2 is further provided with a return end 26, the return end 26 is located at the tail end of the transition runner area 22 and is communicated with the glue running area 23 and the transition runner area 22, the tail end of the return end 26 is arc-shaped, when the molten glue material in the glue feeding area 21 flows forwards, the injection speed of the molten glue material through the return end 26 is buffered before entering the glue running area 23, so that the impact at the position of the product gate 3 is indirectly reduced, and the waste, impurities and initial materials of the molten material in the transition runner area 22 can be split and accumulated for the second time.
The buffer runner 2 is further provided with a buffer end 27, the buffer end 27 is communicated with the gate 3, the buffer end 27 is opposite to the glue running area 23, the tail end of the buffer end is arc-shaped, the injection temperature, the injection pressure and the injection speed are buffered before the molten glue enters the mold core 30 through the buffer end 27, and the residual waste, impurities and initial materials of the molten material in the glue running area 23 are finally split so as to achieve third impurity accumulation, so that the waste, the impurities and the initial materials of the molten material in the injection nozzle 20 are split and accumulated for three times, and the impurities which finally enter the mold core 30 are less and less, thereby improving the qualification rate of products.
Arc-shaped transition parts are arranged at the joints among the transition runner area 22, the backflow end 26 and the glue running area 23, so that molten glue is buffered during injection flow.
With continued reference to fig. 3, the total height H04 of the obliquely ejecting and feeding structure 100 is 20-30mm, when the total height H04 is too small, the temperature difference between the molten rubber and the mold core 30 is too small, resulting in the temperature of the molded product becoming high, the internal stress increasing, the defects such as deformation and air streak being more obvious, whereas when the total height H04 is too large, the temperature difference between the molten rubber and the mold core 30 is too large, resulting in the injection pressure weakening, the product being unsaturated after molding, the rubber being not full, and the like. The overall height H04 of the pitched roof adhesive structure 100 is preferably 23-28mm, depending on the type of molten adhesive.
Optionally, the transition runner area 22 and the glue running area 23 have the same height, so that the difference between the heights of the transition runner area 22 and the glue running area is prevented from influencing the flow rate of the molten glue stock, and defects such as shrinkage, deformation and the like of the product are avoided. The specific heights (such as the gate height H0, the glue running area height H1, the spacing H2, the transition runner area height H3 and the glue inlet height H4) can be appropriately distributed according to the wall thickness, the height, the length and the width of the product.
Based on the oblique ejection glue feeding structure 100, the utility model also correspondingly provides a plastic mold 200 (shown in fig. 4), which comprises an injection nozzle 20, a mold core 30 for molding products and the oblique ejection glue feeding structure 100, wherein the oblique ejection glue feeding structure 100 is arranged between the injection nozzle 20 and the mold core 30, so that molten glue passes through the oblique ejection glue feeding structure 100 and then enters the mold core 30, impurities in the molten glue can be accumulated, the injection temperature, the injection speed and the injection pressure reach the optimal critical values, and the important defects of product deformation, air marks at the position of a gate 3, shrinkage and the like can be effectively solved. Since the oblique top glue feeding structure 100 has been described in detail above, a description thereof will be omitted.
In summary, the plastic mold and the obliquely ejecting and feeding structure thereof provided by the utility model, wherein the obliquely ejecting and feeding structure comprises a feeding port in butt joint with an injection nozzle, a buffer runner, and a gate in butt joint with a mold core feeding port, wherein the feeding end of the feeding port is smaller than the feeding end of the feeding port, and the feeding end of the gate is larger than the feeding end of the gate, so that when molten rubber enters the mold core, the molten rubber diffuses towards two sides of the feeding port of the mold core 30 during flowing, the front impact of the molten rubber at the position of the feeding port of the mold core is reduced, the injection pressure is reduced, the generation of air marks is avoided, and the injection pressure, the injection speed, the injection temperature and the like are reduced in the injection process of the molten rubber through the buffer runner before the molten rubber is injected into the mold core, so that the molten rubber has enough buffer effect from the high temperature injection nozzle to Wen Moren so as to achieve temperature balance, thereby effectively reducing the internal stress of the product, and solving the defects of deformation, surface air marks, shrinkage and the like of the product.
It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present utility model and their spirit, and all such modifications and substitutions are intended to be included within the scope of the present utility model as defined in the following claims.
Claims (10)
1. The utility model provides a structure is advanced to top to one side, its characterized in that, include with injection nozzle dock advance gluey mouth (1), buffering runner (2) and with mould benevolence income gluey mouth dock runner (3), advance gluey mouth (1) set up in advance gluey end of buffering runner (2), runner (3) set up in go out gluey end of buffering runner (2), advance gluey end of mouth (1) and be less than advance gluey end of going out of mouth (1), the play gluey end of runner (3) is greater than the play gluey end of runner (3).
2. The pitched roof glue feeding structure according to claim 1, wherein the buffer runner (2) is provided with a glue feeding area (21), a transition runner area (22), a glue feeding area (23) and a glue discharging area (24) which are sequentially communicated, the glue feeding area (21) is communicated with the glue feeding port (1), the transition runner area (22) is arranged in parallel with the glue feeding area (23), and the glue discharging area (24) is communicated with the pouring gate (3).
3. The pitched roof glue feeding structure according to claim 2, wherein the buffer runner (2) further has an impurity stacking end (25), the impurity stacking end (25) is communicated with the glue feeding port (1), and the impurity stacking end (25) is opposite to the transition runner region (22), and the tail end of the impurity stacking end is arc-shaped.
4. The pitched roof glue feeding structure according to claim 2, wherein the buffer runner (2) further has a backflow end (26), and the backflow end (26) is located at the end of the transition runner area (22) and is communicated with the glue running area (23) and the transition runner area (22).
5. The pitched roof glue feeding structure according to claim 2, wherein the buffer runner (2) is further provided with a buffer end (27), the buffer end (27) is communicated with the gate (3), and the buffer end (27) is opposite to the glue running area (23) and the tail end of the buffer end is arc-shaped.
6. The glue feeding structure of claim 4, wherein the junction between the transition flow passage area (22), the return end (26) and the glue feeding area (23) is provided with an arc-shaped transition part.
7. The pitched roof glue feeding structure according to claim 1, wherein the total height (H04) of the pitched roof glue feeding structure is 20-30mm.
8. The pitched roof glue feeding structure according to claim 6, wherein the transition runner area (22) and the glue running area (23) have the same height.
9. The pitched roof glue feeding structure according to claim 1, wherein the longitudinal section of the pouring gate (3) is in a fan shape with a narrow upper part and a wide lower part.
10. A plastic mould, characterized by comprising an injection nozzle (20), a mould core (30) for forming products and the inclined ejection glue feeding structure (100) according to any one of claims 1-9, wherein the inclined ejection glue feeding structure (100) is arranged between the injection nozzle (20) and the mould core (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321179209.XU CN220219503U (en) | 2023-05-16 | 2023-05-16 | Plastic mold and inclined ejection glue feeding structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321179209.XU CN220219503U (en) | 2023-05-16 | 2023-05-16 | Plastic mold and inclined ejection glue feeding structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220219503U true CN220219503U (en) | 2023-12-22 |
Family
ID=89179031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321179209.XU Active CN220219503U (en) | 2023-05-16 | 2023-05-16 | Plastic mold and inclined ejection glue feeding structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220219503U (en) |
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2023
- 2023-05-16 CN CN202321179209.XU patent/CN220219503U/en active Active
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