CN221475976U - Plastic product flip-chip hot runner glue feeding device - Google Patents
Plastic product flip-chip hot runner glue feeding device Download PDFInfo
- Publication number
- CN221475976U CN221475976U CN202323456387.5U CN202323456387U CN221475976U CN 221475976 U CN221475976 U CN 221475976U CN 202323456387 U CN202323456387 U CN 202323456387U CN 221475976 U CN221475976 U CN 221475976U
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- CN
- China
- Prior art keywords
- glue
- glue feeding
- nozzle
- insert
- plastic product
- Prior art date
- 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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- 239000003292 glue Substances 0.000 title claims abstract description 90
- 229920003023 plastic Polymers 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 230000004075 alteration Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a plastic product inverted hot runner glue feeding device, which comprises a needle valve glue feeding structure, an insert arranged on the end part of the needle valve glue feeding structure, and a shape-following waterway which is arranged in the insert and connected with an external water source of the insert after surrounding the end part of the needle valve glue feeding structure for a circle. The utility model has the effect of improving the surface appearance quality of plastic products.
Description
Technical Field
The utility model relates to the field of plastic product processing equipment, in particular to a plastic product inverted hot runner glue feeding device for a highlight product.
Background
Currently, when producing shell-shaped or flat plastic products with a large middle span in the market, if side glue is adopted, the glue flow length is exceeded, namely the wall thickness of the plastic part is divided by the distance between two feeding points. For example, ABS plastic products each have a length and width of 500mm and a wall thickness of 2.5mm, and if an external side glue is used, the flow length ratio thereof is 500/2.5=200, and the maximum flow length ratio of the glue exceeds 190mm. In addition, the side glue can use larger injection pressure in the filling process, so that the processed pigment has the defects of buckling deformation, temperature difference lines, shrinkage marks and the like. At present, a mode of reverse die filling is adopted, because the temperature of a plastic product at a glue inlet end is generally 250-300 ℃ and the injection molding pressure ratio is larger, and a waterway matched with glue inlet and cooling is a straight waterway (as shown in fig. 1-2), the distances from the straight waterway to a high-temperature position of a glue inlet center are different, so that the temperatures of the positions are different, and the cooling effect is poor, thereby causing the following surface defects: 1. the surface of the plastic product has sun grains, and chromatic aberration exists between the center of the sun grains and the outer periphery; 2. shrink marks and bulge shapes can be generated at the glue feeding center position of the plastic product.
Disclosure of utility model
In view of the above problems, the present utility model aims to provide a plastic product inverted hot runner glue feeding device for improving the surface appearance quality of a plastic product.
In order to achieve the purpose, the utility model provides the plastic product inverted hot runner glue feeding device, which comprises a needle valve glue feeding structure, an insert arranged on the end part of the needle valve glue feeding structure, and a shape following waterway which is arranged in the insert and connected with an external water source of the insert after surrounding the end part of the needle valve glue feeding structure for a circle.
In some embodiments, the needle valve glue feeding structure comprises a nozzle, a glue feeding end with gradually narrowed end parts arranged on one end of the nozzle, a glue feeding nozzle arranged on the glue feeding end, and a valve needle communicated with the nozzle arranged on the glue feeding end. The inside of the nozzle is filled with glue feeding material, the glue feeding nozzle penetrates out from the bottom of the insert, a glue discharging gap is arranged between the valve needle and the glue feeding nozzle, and the conformal waterway is a water channel around the periphery of the glue feeding nozzle on the end part of the nozzle.
In some embodiments, the distance between the conformal waterway and the glue inlet at the high temperature is 15mm.
In some embodiments, the bottom surface of the insert is provided with a water inlet and a water outlet in communication with the conformal waterway.
In some embodiments, the insert comprises a polygonal block corresponding to the shape of the conformal waterway, and a concave position for accommodating the glue inlet end is arranged on the center of the polygonal block. The glue inlet nozzle penetrates out of the insert from the bottom of the concave position.
The utility model has the beneficial effect of improving the appearance quality of the surface of the plastic product. Because the improved shape-following waterway surrounds the valve needle for a circle, the temperature of the glue inlet end of the valve needle is higher when glue is fed, and the distance from the shape-following waterway to the high temperature is about 15mm, the cooling effect of the glue fed extruded from the glue inlet nozzle is uniform and sufficient, the temperature difference of the surface of the mould is small, the defects that the surface of a plastic product has sun marks and chromatic aberration, and shrinkage marks and bulge shapes are generated are overcome, and the effect of improving the surface appearance quality of the plastic product is realized.
Drawings
FIG. 1 is a schematic view of a prior art use state;
FIG. 2 is a schematic view of a straight water channel in an insert in the prior art;
FIG. 3 is a schematic view of the structure of the present utility model in a use state;
FIG. 4 is a schematic view of the horizontal cross-section of the conformal waterway in the insert;
FIG. 5 is a schematic view of the bottom structure of FIG. 4;
FIG. 6 is a schematic view of the structure of an insert of the present utility model;
FIG. 7 is a schematic view showing a bottom view of the adhesive feeding device in an opened state;
FIG. 8 is a schematic cross-sectional view of A-A of FIG. 7;
FIG. 9 is a schematic view showing a bottom view of the present utility model in a closed state;
Fig. 10 is a schematic cross-sectional view of the structure B-B of fig. 9.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
As shown in fig. 3-10, a plastic product inverted hot runner glue feeding device comprises a needle valve glue feeding structure 01, an insert 02 arranged on the end part of the needle valve glue feeding structure 01, and a conformal waterway 03 arranged in the insert 02 and connected with an external water source of the insert 02 after surrounding the end part of the needle valve glue feeding structure 01 for a circle. The conformal waterway 03 is a channel cut inside the insert 02.
The needle valve glue feeding structure 01 comprises a nozzle 11, a glue feeding end 12 with gradually narrowed end parts arranged at one end of the nozzle 11, a glue feeding nozzle 13 arranged on the glue feeding end 12, and a valve needle 14 communicated with the nozzle 11 arranged on the glue feeding end 12. The inside of the nozzle 11 is filled with an inlet size. The glue inlet nozzle 13 penetrates out of the bottom of the insert 02. A gap for discharging glue is arranged between the valve needle 14 and the glue inlet nozzle 13. The conformal waterway 03 is a water channel around the glue inlet nozzle 13 on the end of the nozzle 11. The distance between the conformal waterway 03 and the glue inlet nozzle 13 at the high temperature is 15mm. The bottom surface of the insert 02 is provided with a water inlet 15 and a water outlet 16 which are communicated with the conformal waterway 03. The insert 02 comprises a polygonal block 21 corresponding to the shape of the conformal waterway 03, and a concave position 22 for accommodating the glue inlet 12 is arranged at the center of the polygonal block 21. The size of the insert 02 can be reduced, the slotting size of the die is reduced, and the strength of the die is increased. In addition, in order to achieve a better heat dissipation effect, the beryllium copper material of the insert 02 is usually 38-40HRC, the hardness is low, the valve needle 14 at the glue inlet position needs to slide up and down, the mouth is easy to rub and damage, the 3D printing processing is performed on the insert 02 with the shape of the water channel 03, the hardness is 48-52HRC, and the friction is not easy to damage. The glue inlet nozzle 13 penetrates out of the insert 02 from the bottom of the concave position 22.
When in use, the needle valve glue feeding structure 01 is connected with an injection molding machine, and the end part of the valve needle 14 is connected with a cylinder or a hydraulic cylinder. The glue feeding material is filled into a nozzle 11 on a needle valve glue feeding structure 01 by a tank of an injection molding machine, and then the glue feeding material is extruded into a fixed die from a glue feeding nozzle 13 under the action of the downward pressing of the injection molding machine to form a product. Wherein the opening and closing of the glue inlet nozzle 13 are completed by the valve needle 14 entering and exiting the glue inlet nozzle 13, when the valve needle 14 plugs the glue inlet nozzle 13 under the action of an air cylinder or a liquid cylinder, the glue inlet nozzle 13 is closed; when the valve needle 14 is retracted, a gap is formed between the valve needle 14 and the inner wall of the glue inlet end 12, and the glue inlet nozzle 13 is opened. The improved shape-following waterway 03 surrounds the valve needle 14 for a circle, and the temperature of the glue inlet end 12 at the position of the valve needle 14 is higher when glue is fed, and the distance from the high-temperature position to the shape-following waterway 03 is about 15mm, so that the cooling effect of the glue fed extruded from the glue inlet nozzle 13 is uniform and balanced and sufficient, the temperature difference of the surface of the die is small, and the defects that sun marks and chromatic aberration exist on the surface of a plastic product and shrinkage marks and bulge shapes are generated are overcome.
What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.
Claims (5)
1. The plastic product inverted hot runner glue feeding device is characterized by comprising a needle valve glue feeding structure, an insert arranged on the end part of the needle valve glue feeding structure, and a shape following waterway which is connected with an external water source of the insert after being wound around the end part of the needle valve glue feeding structure.
2. The plastic product inverted hot runner glue feeding device according to claim 1, wherein the needle valve glue feeding structure comprises a nozzle, a glue feeding end with gradually narrowed end parts arranged at one end of the nozzle, a glue feeding nozzle arranged at the glue feeding end, and a valve needle communicated with the nozzle arranged at the glue feeding end;
The inside of the nozzle is filled with a sizing material;
The glue inlet nozzle penetrates out from the bottom of the insert;
a gap for discharging glue is arranged between the valve needle and the glue inlet nozzle;
the conformal waterway is a water channel around the circumference of the glue inlet nozzle on the end part of the nozzle.
3. The plastic product inverted hot runner glue feeding device according to claim 2, wherein the distances between the conformal water paths and the glue feeding nozzles at the high temperature are all 15mm.
4. A plastic product inverted hot runner glue inlet device according to claim 1, 2 or 3, wherein the bottom surface of the insert is provided with a water inlet and a water outlet which are communicated with a conformal waterway.
5. The plastic product inverted hot runner glue feeding device according to claim 2, wherein the insert comprises a polygonal block corresponding to the shape of the conformal waterway, and a concave position for accommodating a glue feeding end is arranged at the center of the polygonal block;
The glue inlet nozzle penetrates out of the insert from the bottom of the concave position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323456387.5U CN221475976U (en) | 2023-12-19 | 2023-12-19 | Plastic product flip-chip hot runner glue feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323456387.5U CN221475976U (en) | 2023-12-19 | 2023-12-19 | Plastic product flip-chip hot runner glue feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221475976U true CN221475976U (en) | 2024-08-06 |
Family
ID=92366780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323456387.5U Active CN221475976U (en) | 2023-12-19 | 2023-12-19 | Plastic product flip-chip hot runner glue feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221475976U (en) |
-
2023
- 2023-12-19 CN CN202323456387.5U patent/CN221475976U/en active Active
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| GR01 | Patent grant |