CN221187391U - Valve needle sleeve with good heat preservation effect - Google Patents
Valve needle sleeve with good heat preservation effect Download PDFInfo
- Publication number
- CN221187391U CN221187391U CN202322414871.5U CN202322414871U CN221187391U CN 221187391 U CN221187391 U CN 221187391U CN 202322414871 U CN202322414871 U CN 202322414871U CN 221187391 U CN221187391 U CN 221187391U
- Authority
- CN
- China
- Prior art keywords
- valve needle
- heat preservation
- preservation effect
- good heat
- nozzle assembly
- 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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- 238000004321 preservation Methods 0.000 title claims abstract description 16
- 230000000694 effects Effects 0.000 title claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 4
- 239000004033 plastic Substances 0.000 abstract description 24
- 229920003023 plastic Polymers 0.000 abstract description 24
- 238000007599 discharging Methods 0.000 abstract description 6
- 238000001746 injection moulding Methods 0.000 description 11
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a valve needle sleeve with good heat preservation effect, which comprises a valve needle and a hot nozzle assembly, wherein a plurality of valve needle holes are uniformly formed in the hot nozzle assembly, the valve needle holes are in sliding connection with the valve needle, a feeding pipe is arranged on the side wall of the hot nozzle assembly and is obliquely arranged, a feeding channel is formed in the feeding pipe, a main flow channel is formed in the hot nozzle assembly, the tail end of the feeding channel is communicated with the lower end of the main flow channel, the upper end of the main flow channel is communicated with the valve needle holes, and a discharging hole is formed in the lower end of the hot nozzle assembly and is communicated with the discharging hole. According to the utility model, the flow direction of the plastic melt in the main runner is changed, and the plastic melt in the sub-runner is heated by the plastic melt in the main runner.
Description
Technical Field
The utility model belongs to the technical field of hot runners, and particularly relates to a valve needle sleeve with a good heat preservation effect.
Background
Injection molding is a method for producing and shaping industrial products. Products are generally molded using rubber and plastic. Injection molding can also be divided into injection molding compression molding and die casting, and an injection molding machine (simply referred to as an injection molding machine or an injection molding machine) is a main molding apparatus for molding thermoplastic or thermosetting materials into plastic products of various shapes using a plastic molding die, and injection molding is performed by the injection molding machine and the die.
In the hot runner system of the existing injection molding equipment, plastic melt enters the hot runner system through an injection molding machine injection nozzle and is injected into a cavity plate through the hot nozzle, and the injection molding equipment has the defects that the temperature of the hot runner is greatly different from the temperature of a mold, so that the temperature loss of the hot runner is high, the energy consumption is high, the temperature fluctuation is large, and the product is unstable.
In order to overcome the defects, the person skilled in the art is actively researched to create a valve needle sleeve with good heat preservation effect.
Disclosure of utility model
The utility model mainly solves the technical problem of providing the valve needle sleeve with good heat preservation effect, and the temperature of fluid in the valve needle hole is ensured by inversely arranging the main runner and utilizing the temperature in the main runner, so that the purpose of heat preservation is achieved.
In order to solve the technical problems, the utility model adopts a technical scheme that: including needle and heat and chew the subassembly, the heat is chewed the subassembly and is evenly offered a plurality of valve needle holes, the valve needle hole with needle sliding connection, the heat is chewed the lateral wall of subassembly and is provided with the inlet pipe, the inlet pipe slope sets up, the feed channel has been seted up in the inlet pipe, the heat is chewed the subassembly and is offered the sprue, the end of feed channel with the lower extreme intercommunication of sprue, the upper end of sprue with the valve needle hole intercommunication, the heat is chewed the lower extreme of subassembly and is provided with the discharge opening, the valve needle hole with the discharge opening intercommunication.
Further, the upper end of the main runner is provided with a plurality of sub-runners, and one sub-runner corresponds to one valve pinhole.
Further, an arc-shaped transition part is arranged between the main flow channel and the split flow channel and between the split flow channel and the valve needle hole.
Further, the outer wall of the hot nozzle assembly is fixedly provided with heating wires.
Further, the included angle between the hot nozzle assembly and the feeding pipe is 30-45 degrees.
Further, the side wall of the valve needle hole is obliquely arranged, the diameter of the upper end of the valve needle hole is larger than that of the valve needle, and the diameter of the tail end of the valve needle hole is equal to that of the valve needle.
Further, the upper end of the hot nozzle assembly is provided with a flange.
The beneficial effects of the utility model are at least as follows:
According to the utility model, the feeding pipe is communicated with the bottom of the main runner, the sub-runner is communicated with the top of the main runner, the plastic melt moves in the main runner from bottom to top, the temperature of the lower end of the main runner is higher than that of the upper end of the main runner, the plastic melt moves in the sub-runner and the valve needle hole from top to bottom, and when the plastic melt moves downwards and the temperature distribution is higher, the plastic melt newly entering the main runner can transfer the temperature to the plastic melt in the valve needle hole, so that the heat preservation effect is realized;
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view of the present utility model;
the parts in the drawings are marked as follows:
1 valve needle, 2 hot nozzle components, 21 main runner, 22 sub-runner, 3 valve needle hole, 4 feeding pipe, 5 discharging hole and 6 heating wire.
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.
Examples: the utility model provides a effectual needle cover keeps warm, as shown in fig. 1 and fig. 2, including needle 1 and heat mouth subassembly 2, evenly offered a plurality of valve pinholes 3 in the heat mouth subassembly, the valve pinhole is annular distribution in the heat mouth subassembly, the valve needle hole with needle sliding connection, the needle can be in the downthehole circumferential motion from top to bottom of valve needle, the lateral wall that the subassembly was chewed to the heat is provided with inlet pipe 4, the inlet pipe slope sets up, the feed channel has been seted up in the inlet pipe, the sprue 21 has been seted up in the heat mouth subassembly, the end of feed channel with the lower extreme intercommunication of sprue, the upper end of sprue with the needle hole intercommunication, the lower extreme that the subassembly was chewed to the heat is provided with discharge opening 5, the valve pinhole with discharge opening intercommunication. When the plastic melt feeding device is used, the plastic melt enters the lower end of the main runner from the inside of the feeding runner, moves in the main runner from bottom to top, then enters the valve needle hole at the upper end of the main runner, finally flows out from the discharging hole, the position of the discharging hole is close to one end of the main runner for feeding, and at the moment, the plastic melt just enters the hot nozzle assembly, the temperature is higher, so that the discharging hole can be guaranteed to have a higher temperature.
The upper end of the main runner is provided with a plurality of sub runners 22, one sub runner corresponds to one valve pin hole, and the sub runners are opened and closed through the up-and-down movement of the valve pin, so that the flow of the plastic melt in the hot nozzle assembly is controlled.
The main runner with the shunt, the shunt with be provided with arcuation transition portion between the needle hole, arcuation transition has reduced the dead angle in the hot nozzle subassembly, has reduced the plastics fuse-element and has left the residue in the hot nozzle subassembly.
The outer wall of the hot nozzle assembly is fixedly provided with heating wires 6, and the heating wires are arranged outside the hot nozzle assembly to heat the plastic melt so as to ensure the temperature of the plastic melt.
The included angle between the hot nozzle assembly and the feeding pipe is 30-45 degrees.
The side wall slope of needle hole sets up, and the diameter of valve needle upper end is big promptly, and the diameter of lower extreme is little, the diameter of valve needle upper end is greater than the diameter of needle, the diameter at needle hole end equals the diameter of needle, when the needle motion to the lower extreme, the needle seals whole needle hole.
The upper end of the hot nozzle assembly is provided with a flange.
The working principle of the utility model is as follows:
When the plastic hot nozzle is used, whether the heating wire is electrified is selected according to the heat preservation requirement, the plastic melt is injected into the hot nozzle assembly from the feeding pipe, and moves from bottom to top in the main runner, so that the temperature below the main runner is higher than that above the main runner, the plastic melt moves from top to bottom in the split runner and the valve pin hole, and at the moment, due to the existence of temperature difference, heat is transferred from the plastic melt in the main runner to the plastic melt in the valve pin hole, and the temperature of the plastic melt flowing out of the hot nozzle assembly is ensured.
The foregoing is only illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, and all equivalent structural changes made by the present utility model and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present utility model.
Claims (7)
1. The valve needle sleeve with good heat preservation effect is characterized in that: including needle and heat and chew the subassembly, the heat is chewed the subassembly and is evenly offered a plurality of valve needle holes, the valve needle hole with needle sliding connection, the heat is chewed the lateral wall of subassembly and is provided with the inlet pipe, the inlet pipe slope sets up, the feed channel has been seted up in the inlet pipe, the heat is chewed the subassembly and is offered the sprue, the end of feed channel with the lower extreme intercommunication of sprue, the upper end of sprue with the valve needle hole intercommunication, the heat is chewed the lower extreme of subassembly and is provided with the discharge opening, the valve needle hole with the discharge opening intercommunication.
2. The valve needle sleeve with good heat preservation effect according to claim 1, wherein: the upper end of the main runner is provided with a plurality of sub-runners, and one sub-runner corresponds to one valve pinhole.
3. The valve needle sleeve with good heat preservation effect according to claim 2, wherein: the main flow channel and the split flow channel are provided with arc-shaped transition parts between the split flow channel and the valve needle holes.
4. The valve needle sleeve with good heat preservation effect according to claim 1, wherein: the outer wall of the hot nozzle assembly, and the outer wall of the feeding pipe is fixedly provided with heating wires.
5. The valve needle sleeve with good heat preservation effect according to claim 1, wherein: the included angle between the hot nozzle assembly and the feeding pipe is 30-45 degrees.
6. The valve needle sleeve with good heat preservation effect according to claim 1, wherein: the side wall of the valve needle hole is obliquely arranged, the diameter of the upper end of the valve needle hole is larger than that of the valve needle, and the diameter of the tail end of the valve needle hole is equal to that of the valve needle.
7. The valve needle sleeve with good heat preservation effect according to claim 1, wherein: the upper end of the hot nozzle assembly is provided with a flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322414871.5U CN221187391U (en) | 2023-09-06 | 2023-09-06 | Valve needle sleeve with good heat preservation effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322414871.5U CN221187391U (en) | 2023-09-06 | 2023-09-06 | Valve needle sleeve with good heat preservation effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221187391U true CN221187391U (en) | 2024-06-21 |
Family
ID=91519978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322414871.5U Active CN221187391U (en) | 2023-09-06 | 2023-09-06 | Valve needle sleeve with good heat preservation effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221187391U (en) |
-
2023
- 2023-09-06 CN CN202322414871.5U patent/CN221187391U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |