CN219294617U - Injection nozzle assembly and injection molding machine - Google Patents
Injection nozzle assembly and injection molding machine Download PDFInfo
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- CN219294617U CN219294617U CN202320275743.4U CN202320275743U CN219294617U CN 219294617 U CN219294617 U CN 219294617U CN 202320275743 U CN202320275743 U CN 202320275743U CN 219294617 U CN219294617 U CN 219294617U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model particularly relates to an injection nozzle assembly and an injection molding machine. A nozzle assembly, a nozzle and a plurality of nozzle tips. The plurality of injection nozzle heads comprise an injection inlet and a plurality of first runners which are respectively communicated with the injection inlet; the plurality of nozzle tips are respectively fixed at the bottom of the injection nozzle along the axial direction of the first flow passage, and each nozzle tip comprises a second flow passage communicated with the first flow passage and a gate communicated with the second flow passage. The utility model provides an injection inlet formed by the injection nozzle, a plurality of first runners respectively communicated with the injection inlet and a second runner formed by the injection nozzle head, so that the injection nozzle assembly can be provided with a plurality of pouring gates in a small installation space to meet the injection requirement of an injection machine with small volume, a plurality of pouring gates and a relatively short distance between adjacent pouring gates, and the injection nozzle assembly has the advantages of good injection molding effect, attractive pouring gates and high product yield when applied to products injected by a small-sized molding machine.
Description
Technical Field
The utility model relates to the technical field of injection molds, in particular to an injection nozzle assembly and an injection molding machine.
Background
Injection molding machines (abbreviated as "injection molding machines" or "injection molding machines") are the main molding equipment for molding thermoplastic or thermosetting materials into plastic products of various shapes using plastic molding dies.
At present, most injection mechanisms of injection molding machines for injecting thermoplastic plastics are provided with an injection nozzle head corresponding to one injection inlet, small-sized precise products with high injection precision requirements, such as small-sized precise medical utensils, cannot meet the processing precision requirements of the injection mechanisms in the prior art, cannot meet the injection requirements of the injection machines with small installation volume and short pouring gate distance, and have the defects of poor injection molding effect, unaesthetic pouring gate and low product yield when the injection mechanisms in the prior art are applied to products injected by the small-sized molding machines. Therefore, there is a need to develop a nozzle assembly and an injection molding machine to solve the above problems.
Disclosure of Invention
The utility model aims to provide the injection nozzle assembly with good injection molding effect, attractive pouring gate and high product yield.
To achieve the above object, an embodiment of the present utility model provides a nozzle assembly including:
the injection nozzle comprises an injection inlet and a plurality of first runners which are respectively communicated with the injection inlet;
the injection nozzle heads are respectively fixed at the bottom of the injection nozzle along the axial direction of the first flow passage, and respectively comprise a second flow passage communicated with the first flow passage and a gate communicated with the second flow passage.
As a further improvement of an embodiment of the present utility model, the injection nozzle further comprises a driving cylinder sleeved on the outer wall of the injection nozzle, and a plurality of valve needles extending from the first runner to the second runner, wherein the driving cylinder drives the valve needles to do linear reciprocating motion at the same time, and the valve needles are configured to open or close the corresponding pouring gates.
As a further improvement of an embodiment of the present utility model, the driving cylinder includes a cylinder body, a piston disposed in the cylinder body, the cylinder body and the piston together define a through cavity for mounting the injection nozzle, wherein an outer wall of the injection nozzle is adapted to an inner wall of the through cavity, and the injection nozzle further includes a positioning and mounting portion for positioning and mounting the cylinder body in a vertical direction.
As a further improvement of an embodiment of the present utility model, the piston includes a movable portion movably disposed on an inner wall of the cylinder body, and a connecting portion formed by extending the movable portion in an axial direction and fixedly mounted to the valve needle, wherein the connecting portion is disposed parallel to a top wall of the cylinder body.
As a further improvement of an embodiment of the present utility model, the injection nozzle includes a first injection nozzle body extending downward from the top of the cylinder body, and a second injection nozzle body axially fixed to the bottom of the first injection nozzle body along the first injection nozzle body, the injection inlet is provided on the top end surface of the first injection nozzle body, and the first injection nozzle body and the second injection nozzle body together define a plurality of the first flow passages.
As a further improvement of an embodiment of the present utility model, the positioning and mounting portion includes a first limiting boss portion formed by extending the first nozzle body outwards to form a limiting abutment on an inner top wall of the cylinder main body, and a second limiting boss portion formed by extending the second nozzle body outwards to form a limiting abutment on an inner bottom wall of the cylinder main body, wherein the second nozzle body is disposed below the connecting portion and extends out of the through cavity, and a movable space for the connecting portion to move up and down is defined between the first nozzle body and the second nozzle body.
As a further improvement of an embodiment of the utility model, the cylinder main body comprises a top cover, a cylinder sleeve and a base from top to bottom in sequence; the top cover, the cylinder sleeve and the base jointly define the penetrating cavity, the top cover forms the first limiting boss portion, and the base forms the second limiting boss portion.
As a further improvement of an embodiment of the present utility model, a center line of the injection inlet coincides with a center line of the through cavity, and the plurality of first flow passages are arranged in a circumferential array with the center line of the through cavity as a center line axis.
As a further improvement of an embodiment of the present utility model, a plurality of the nozzle tips are respectively screwed to the bottoms of the nozzles, wherein the bottoms of the nozzles are recessed upward to form screw grooves screwed to the nozzle tips.
In order to solve the problems, the utility model also provides an injection molding machine with good injection molding effect, attractive pouring gate and high product yield.
An injection molding machine comprising a nozzle assembly as hereinbefore described.
Compared with the prior art, the utility model has the beneficial effects that: the injection nozzle assembly and the injection molding machine provided by the utility model are used for completing the pouring process of molten plastic through the injection nozzle and the injection nozzle heads connected to the bottom of the injection nozzle. And the injection inlet formed by the injection nozzle, a plurality of first runners respectively communicated with the injection inlet and a second runner formed by the injection nozzle head, so that the injection nozzle assembly can be provided with a plurality of pouring gates in a small installation space to meet the injection requirement of an injection machine with small volume, a plurality of pouring gates and a relatively short distance between adjacent pouring gates, and the injection nozzle assembly has the advantages of good injection molding effect, attractive pouring gates and high product yield when applied to products injected by a small-sized molding machine.
Drawings
FIG. 1 is a schematic view of the structural composition of a nozzle assembly of the present utility model;
FIG. 2 is a schematic top view of the nozzle assembly of the present utility model;
FIG. 3 is a schematic view of a cross-sectional structure in the direction A-A in FIG. 2;
FIG. 4 is a schematic view of the nozzle assembly of the present utility model in a bottom view;
FIG. 5 is a schematic view showing a sectional structure in the direction B-B in FIG. 4;
fig. 6 is a schematic view of a cross-sectional structure in the direction C-C in fig. 5.
In the figure: 1. an injection nozzle; 11. an injection inlet; 12. a first flow passage; 13. a first nozzle body; 14. a second nozzle body; 15. a movable space; 16. positioning the mounting part; 161. a first limit boss portion; 162. a second limit boss portion; 17. a thread groove; 2. an injection nozzle head; 21. a second flow passage; 22. a gate; 3. a valve needle; 4. a driving cylinder; 41. a cylinder main body; 411. a top cover; 412. a cylinder sleeve; 413. a base; 42. a piston; 421. a movable part; 422. a connection part; 43. a through cavity; 51. a first heating member; 52. and a second heating member.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Referring to fig. 1, the present utility model mainly relates to: a nozzle assembly, comprising: a nozzle 1 and a plurality of nozzle tips 2 connected to the bottom of the nozzle 1. The number of the nozzle tips 2 is at least two. By means of heating and temperature control of the injected plastic, the molten plastic is poured into the cavity of the die assembly through the injection nozzle 1 and the injection nozzle head 2 in sequence.
As shown in fig. 2 to 5, in the present embodiment, the injection nozzle 1 includes an injection inlet 11, and a plurality of first flow passages 12 respectively communicating with the injection inlet 11. The plurality of nozzle tips 2 are fixed to the bottom of the nozzle 1 in the axial direction of the first flow path 12, respectively. The plurality of nozzle tips 2 each include a second flow passage 21 communicating with the first flow passage 12, and a gate 22 communicating with the second flow passage 21. The nozzle tip 2 is disposed at the bottom of the nozzle 1, and the second flow path 21 is disposed coaxially with the bottom of the first flow path 12.
The number of the nozzle tips 2 is the same as that of the first flow passages 12, and each nozzle tip 2 has a second flow passage 21 and a gate 22 provided at the bottom of the second flow passage 21. The number of second flow channels 21 is the same as the number of first flow channels 12.
The molten plastic flows in from the injection inlet 11, flows into the first flow channels 12 respectively, then flows out through the second flow channels 21 and the gates 22 corresponding to the first flow channels 12 respectively, and is simultaneously poured into the cavity of the mold assembly, so as to meet the injection requirement of the injection machine with small volume, multiple gates and relatively close distance between adjacent gates.
Further, the gate 22 may be selectively opened or closed. Preferably, a plurality of gates 22 are simultaneously opened or simultaneously closed.
Further, the injection nozzle assembly further comprises a driving cylinder 4 sleeved on the outer wall of the injection nozzle 1 and a plurality of valve needles 3 extending from the first flow passage 12 to the second flow passage 21. The valve needle 3 is movable up and down for opening or closing the valve needle 3.
Wherein the driving cylinder 4 drives the plurality of valve pins 3 to reciprocate linearly at the same time so that the plurality of gates 22 are opened or closed at the same time. The valve pin 3 is configured to open or close its corresponding gate 22. Therefore, the problem that the small-size injection machine cannot control the opening and closing of a plurality of pouring gates through the valve needle at the same time is solved, the injection process is more controllable, the injection precision is higher, and the injection effect is better.
Further, the driving cylinder 4 includes a cylinder body 41, a piston 42 provided in the cylinder body 41. The cylinder body 41 and the piston 42 together define a through cavity 43 for mounting the nozzle 1. The penetration chamber 43 is vertically penetrated, and the injection nozzle 1 is provided in the penetration chamber 43 so as to extend downward from the injection inlet 11.
Further, the outer wall of the injection nozzle 1 is provided to be fitted with the inner wall of the penetration chamber 43, and the injection nozzle 1 further includes a positioning and mounting portion 16 for positioning and mounting the cylinder body 41 in the vertical direction. The injection nozzle 1 passes through the penetrating cavity 43 and is positioned and installed with the installation cylinder body 41 through the positioning and installation part 16, so that the stability of the connection of the injection nozzle 1 and the cylinder body 41 is improved.
Further, the piston 42 includes a movable portion 421 provided on the inner wall of the cylinder body 41 so as to be movable up and down, and a connecting portion 422 formed by extending the movable portion 421 in the axial direction and fixedly attached to the needle 3. Wherein the connection portion 422 is disposed in parallel with the top wall of the cylinder body 41. The upper and lower parts of the inner wall of the cylinder body 41 are respectively provided with a movable limiting part matched with the movable part 421. The movable portion 421 moves up and down together with the connecting portion 422, and the connecting portion 422 drives the needle 3 to move up and down.
Further, the nozzle 1 includes a first nozzle body 13 provided to extend downward from the top of the cylinder body 41, and a second nozzle body 14 axially fixed to the bottom of the first nozzle body 13 along the first nozzle body 13.
Wherein, the middle of the top end surface of the first injection nozzle body 13 is provided with an injection inlet 11, and the first injection nozzle body 13 and the second injection nozzle body 14 jointly define a plurality of first flow passages 12. The first nozzle body 13 forms part of the first flow passage 12 and the second nozzle body 14 forms another part of the first flow passage 12. The other part of the first flow passage 12 is arranged coaxially with the second flow passage 21.
Wherein, in order to provide the installation space of the connection part 422, the part of the first flow channel 12 is arranged to extend obliquely from the center to the far center in the downward direction from the injection inlet 11. The other part of the first runner 12 extends vertically downwards to ensure that the molten plastic can flow downwards smoothly.
Preferably, the first nozzle body 13 is screw-coupled with the top of the second nozzle body 14 through the coupling portion 422.
Further, the second nozzle body 14 is disposed below the connection portion 422 and extends out of the through cavity 43, and a movable space 15 for the connection portion 422 to move up and down is defined between the first nozzle body 13 and the second nozzle body 14.
Specifically, when the piston 42 moves downward such that the lower surface of the connecting portion 422 contacts the top end surface of the second nozzle body 14, the gate 22 is in a closed state;
when the piston 42 moves upward to such an extent that the lower surface of the connecting portion 422 is away from the top end surface of the second nozzle body 14, the gate 22 is in an open state.
Preferably, the height of the first nozzle body 13 in its axial direction is smaller than the height of the second nozzle body 14 in its axial direction.
Further, the positioning and mounting portion 16 includes a first limiting boss portion 161 formed by extending the first nozzle body 13 outwards to form a limiting abutment on the inner top wall of the cylinder body 41, and a second limiting boss portion 162 formed by extending the second nozzle body 14 outwards to form a limiting abutment on the inner bottom wall of the cylinder body 41.
Further, the cylinder body 41 includes a top cover 411, a cylinder sleeve 412, and a base 413 in this order from top to bottom. The top cover 411 is connected to the top opening of the cylinder sleeve 412, and the base 413 is connected to the bottom opening of the cylinder sleeve 412. Wherein, the top cover 411, the cylinder sleeve 412 and the base 413 together define a through cavity 43 with upper and lower openings.
Further, the top cover 411 is in a limit fit with the first limit boss 161, and the base 413 is in a limit fit with the second limit boss 162.
Further, the center line of the injection inlet 11 coincides with the center line of the through cavity 43, and the plurality of first flow channels 12 are arranged in a circumferential array with the center line of the through cavity 43 as the center line axis, so that the distances between the injection inlet 11 and the plurality of first flow channels 12 are the same, and the molten plastic can be simultaneously poured into the cavity of the mold assembly.
Further, a plurality of nozzle tips 2 are screwed to the bottom of the nozzle 1, respectively. Wherein the bottom of the nozzle 1 is recessed upward to form a screw groove 17 screw-coupled with the nozzle tip 2. The different injection nozzle heads 2 and the injection nozzle 1 are matched and installed in a threaded connection mode, so that the installation requirements of different injection machines are met.
As shown in fig. 6, the nozzle 1 further includes a first heating member 51 spirally disposed on the outer wall of the first nozzle body 13, and a second heating member 52 spirally disposed on the outer wall of the second nozzle body 14. The first heating member 51 and the second heating member 52 are used together to heat the plastic in the molten state of the first flow path 12, so as to ensure smooth flow of the plastic in the molten state. The first heating member 51 is provided inside the cylinder body 41. A portion of the second heating member 52 is disposed inside the cylinder body 41, and another portion of the second heating member 52 protrudes out of the cylinder body 41.
In order to solve the problems, the utility model also provides an injection molding machine.
An injection molding machine comprising a nozzle assembly as hereinbefore described.
Compared with the prior art, the injection nozzle assembly and the injection molding machine provided by the utility model complete the pouring process of the plastic in a molten state through the injection nozzle 1 and the plurality of injection nozzle heads 2 connected to the bottom of the injection nozzle 1. And through the injection inlet 11 that injection nozzle 1 formed, a plurality of first runner 12 that communicate with this injection inlet 11 respectively, and the second runner 21 that injection nozzle head 2 formed to make the injection nozzle subassembly can dispose a plurality of runner 22 in little installation space, in order to satisfy the injection requirement of the injection machine that small, needs a plurality of runner, and the distance between the adjacent runner is nearer, the injection nozzle subassembly is applied to the product that injects out on the small-size make-up machine has the advantage that the injection molding effect is good, runner 22 is pleasing to the eye, the product yields is high.
In the description of the present specification, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified and limited otherwise; the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that those skilled in the art will be understood that various changes in form and details may be made therein without departing from the scope of the utility model as defined by the appended claims.
Claims (10)
1. A nozzle assembly, comprising:
the injection nozzle comprises an injection inlet and a plurality of first runners which are respectively communicated with the injection inlet;
the injection nozzle heads are respectively fixed at the bottom of the injection nozzle along the axial direction of the first flow passage, and respectively comprise a second flow passage communicated with the first flow passage and a gate communicated with the second flow passage.
2. A nozzle assembly as defined in claim 1, wherein: the injection nozzle further comprises a driving cylinder sleeved on the outer wall of the injection nozzle and a plurality of valve needles extending from the first flow passage to the second flow passage, wherein the driving cylinder drives the valve needles to do linear reciprocating motion at the same time, and the valve needles are configured to open or close the corresponding pouring gates.
3. The nozzle assembly of claim 2, wherein: the driving cylinder comprises a cylinder main body and a piston arranged in the cylinder main body, the cylinder main body and the piston jointly define a penetrating cavity for installing the injection nozzle, the outer wall of the injection nozzle is matched with the inner wall of the penetrating cavity, and the injection nozzle further comprises a positioning installation part for positioning and installing the cylinder main body in the vertical direction.
4. A nozzle assembly according to claim 3, wherein: the piston comprises a movable part which is arranged on the inner wall of the cylinder main body in an up-down movable way, and a connecting part which is formed by extending the movable part axially and fixedly installed with the valve needle, wherein the connecting part is arranged in parallel with the top wall of the cylinder main body.
5. The nozzle assembly of claim 4, wherein: the injection nozzle comprises a first injection nozzle body and a second injection nozzle body, wherein the first injection nozzle body is arranged by extending downwards from the top of the cylinder body, the second injection nozzle body is axially fixed to the bottom of the first injection nozzle body along the first injection nozzle body, the top end face of the first injection nozzle body is provided with an injection inlet, and the first injection nozzle body and the second injection nozzle body jointly define a plurality of first flow passages.
6. A nozzle assembly as defined in claim 5, wherein: the positioning and mounting part comprises a first limiting boss part which is formed by outwards extending the first injection nozzle body to be in limiting butt with the inner top wall of the cylinder main body, and a second limiting boss part which is formed by outwards extending the second injection nozzle body to be in limiting butt with the inner bottom wall of the cylinder main body, wherein the second injection nozzle body is arranged below the connecting part and extends out of the penetrating cavity, and a movable space for the connecting part to move up and down is defined between the first injection nozzle body and the second injection nozzle body.
7. The nozzle assembly of claim 6, wherein: the cylinder main body sequentially comprises a top cover, a cylinder sleeve and a base from top to bottom; the top cover, the cylinder sleeve and the base jointly define the penetrating cavity, the top cover forms the first limiting boss portion, and the base forms the second limiting boss portion.
8. A nozzle assembly according to claim 3, wherein: the central line of the injection inlet coincides with the central line of the penetrating cavity, and a plurality of first flow passages are arranged in a circumferential array by taking the central line of the penetrating cavity as a central line axis.
9. A nozzle assembly as defined in claim 1, wherein: the injection nozzle heads are respectively connected with the bottom of the injection nozzle in a threaded mode, wherein the bottom of the injection nozzle is recessed upwards to form a thread groove in threaded connection with the injection nozzle heads.
10. An injection molding machine, characterized in that: comprising a nozzle assembly according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320275743.4U CN219294617U (en) | 2023-02-21 | 2023-02-21 | Injection nozzle assembly and injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320275743.4U CN219294617U (en) | 2023-02-21 | 2023-02-21 | Injection nozzle assembly and injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219294617U true CN219294617U (en) | 2023-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320275743.4U Active CN219294617U (en) | 2023-02-21 | 2023-02-21 | Injection nozzle assembly and injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219294617U (en) |
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2023
- 2023-02-21 CN CN202320275743.4U patent/CN219294617U/en active Active
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