CN215703579U - Injection molding nozzle of injection molding machine - Google Patents
Injection molding nozzle of injection molding machine Download PDFInfo
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- CN215703579U CN215703579U CN202121149672.0U CN202121149672U CN215703579U CN 215703579 U CN215703579 U CN 215703579U CN 202121149672 U CN202121149672 U CN 202121149672U CN 215703579 U CN215703579 U CN 215703579U
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- injection molding
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- thimble
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Abstract
The utility model relates to the technical field of injection molding, and discloses an injection molding nozzle of an injection molding machine, which comprises a pipe body; the injection molding channel in the tube body is set as an input channel and an output channel; a thimble penetrates through the injection molding channel, the first end of the thimble extends out of the outlet of the pipe body, and a sealing element matched with the sealing platform is connected to the thimble; and a compression spring for pushing the sealing element to be jointed with the sealing table to form a sealing mechanism is connected to the sealing element. By applying the technical scheme of the utility model, the pretightening force of the compression spring can promote the sealing element to be jointed with the sealing table by virtue of the ejector pin so as to achieve the sealing effect. When injection molding is needed, the first end of the pushing thimble overcomes the pretightening force of the compression spring and retracts into the pipe body, at the moment, the sealing element is separated from the sealing platform, and the molten raw material can pass through the sealing mechanism and then is output outwards through the output channel. After the injection molding is finished, the first end of the thimble extends out and resets under the action of the compression spring; at this time, the sealing state is automatically recovered, and the molten raw material does not overflow.
Description
Technical Field
The utility model relates to the technical field of injection molding, in particular to an injection molding nozzle of an injection molding machine.
Background
A nozzle is a piece of equipment used in the injection molding field for injection molds. The molten plastic is injected into the mould through the nozzle, and the plastic is cooled in the mould to prepare the plastic product. In the prior art, most nozzles are open, and molten plastic easily flows out of nozzle openings to generate flash. Flash not only causes waste of raw materials, but also high temperature flash may scald operators. In addition, the flash brings some adverse effects to the injection molding process, such as the flash drips and adheres to the mold, which affects the normal use of the mold; the overflow material drops on the plastic product, and the plastic product is scalded, damaged and deformed, thereby causing scrapping.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an injection molding nozzle of an injection molding machine, so as to solve the technical problem that the nozzle in the prior art is likely to have a flash phenomenon.
In order to achieve the purpose, the utility model adopts the technical scheme that:
an injection nozzle of an injection molding machine comprises a pipe body; the injection molding channel in the pipe body is provided with an input channel and an output channel which are connected end to end, and a sealing platform is formed at the joint of the output channel and the input channel; a thimble penetrates through the injection molding channel, the first end of the thimble extends out of the outlet of the pipe body, and a sealing element matched with the sealing platform is connected to the thimble; and a compression spring for pushing the sealing element to be jointed with the sealing table to form a sealing mechanism is connected to the sealing element.
According to the injection nozzle of the injection molding machine, the sealing platform is formed into a sealing conical surface, and correspondingly, the sealing element is a conical body.
According to the injection molding nozzle of the injection molding machine, the inner diameter of the output channel is smaller than that of the input channel.
According to the injection molding nozzle of the injection molding machine, the inner wall of the output channel is provided with a plurality of expansion grooves, and the length direction of each expansion groove is along the central axis of the output channel; multichannel the dilatation groove forms for annular round to evenly interval arranges.
According to the injection molding nozzle of the injection molding machine, the movable nut penetrates through the input channel and is in threaded connection with the inner wall of the input channel, and the center of the movable nut is provided with an avoidance hole for the ejector pin to penetrate through; the first end of the compression spring is connected with the sealing element, and the second end of the compression spring is connected with the movable nut.
According to the injection molding nozzle of the injection molding machine, the end face, away from the sealing element, of the movable nut is provided with the inserting blind hole for driving the movable nut to rotate.
According to the injection nozzle of the injection molding machine, the outlet of the pipe body is formed in a pointed shape, and the first end of the ejector pin is set as a tip.
According to the injection molding nozzle of the injection molding machine, the inlet of the pipe body is opposite to the outlet, and the inlet end of the pipe body is provided with the connecting nut.
According to the injection molding nozzle of the injection molding machine, the inlet end of the injection molding nozzle is connected with the injection molding machine body.
The utility model has the beneficial effects that:
by applying the technical scheme of the utility model, the pretightening force of the compression spring can promote the sealing element to be jointed with the sealing table by virtue of the ejector pin so as to achieve the sealing effect. When injection molding is needed, the first end of the pushing thimble overcomes the pretightening force of the compression spring and retracts into the pipe body, at the moment, the sealing element is separated from the sealing platform, and the molten raw material can pass through the sealing mechanism and then is output outwards through the output channel. After the injection molding is finished, the first end of the thimble extends out and resets under the action of the compression spring; at this time, the sealing state is automatically recovered, and the molten raw material does not overflow. In the above, the joint and separation action of the sealing element and the sealing platform are rapid, the response time is short, the output channel and the outlet can be sealed in time, the flash phenomenon is avoided, and various defects caused by the flash problem are avoided.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 2 is a schematic top view of FIG. 1;
FIG. 3 is a schematic view of FIG. 1 in an injection molding state;
FIG. 4 is an enlarged partial view of portion A of FIG. 3;
FIG. 5 is a schematic view of the seal member fixedly mounted to the thimble;
FIG. 6 is a schematic bottom view of the traveling nut;
FIG. 7 is a schematic structural diagram of another preferred embodiment of the present invention;
reference numerals:
the device comprises a pipe body 1, an input channel 2, a plugging blind hole 3, a movable nut 4, an ejector pin 5, a sealing element 6, a sealing platform 7, an output channel 8, a connecting nut 9, an avoiding hole 10, a clamping nut 11 and an expansion groove 12.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to the attached drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Examples
Referring to fig. 1 to 7, the present invention provides an injection nozzle of an injection molding machine, which includes a pipe body 1; the injection molding channel in the pipe body 1 is provided with an input channel 2 and an output channel 8 which are connected end to end, and a sealing platform 7 is formed at the butt joint of the output channel 8 and the input channel 2; a thimble 5 penetrates through the injection molding channel, the first end of the thimble 5 extends out of the outlet of the pipe body 1, and a sealing element 6 matched with a sealing platform 7 is connected to the thimble 5; and a compression spring for pushing the sealing member 6 to be jointed with the sealing table 7 to form a sealing mechanism is connected to the sealing member 6.
The injection nozzle of the injection molding machine is further improved as follows:
regarding the sealing manner: the sealing table 7 is formed as a sealing cone, and correspondingly, the sealing member 6 is a cone. The sealing element 6 is a high temperature resistant non-metallic gasket. The conical surface of the conical body and the sealing conical surface are tightly jointed under the pre-tightening action of the compression spring, and the sealing effect is realized. As shown in fig. 5, the sealing element 6 is connected with the thimble 5 through a clamping nut 11, specifically, a threaded section is arranged on the thimble 5 corresponding to the installation position of the sealing element 6, and the clamping nuts 11 are arranged on both sides of the sealing element 6; the clamping nut 11 is adjusted for fixing the seal 6. And at the later stage, the sealing element 6 is convenient to replace. The outer dimension of the clamping nut 11 should be matched with the sealing conical surface to prevent interference.
At the same time, the inner diameter of the outlet channel 8 is smaller than the inner diameter of the inlet channel 2.
As shown in fig. 2, in order to increase the flow rate of the molten raw material after passing through the sealing mechanism, a plurality of expansion grooves 12 are formed in the inner wall of the output channel 8, and the length direction of the expansion grooves 12 is along the central axis of the output channel 8; the plurality of the expansion slots 12 are formed into a ring shape and are uniformly arranged at intervals.
Regarding the sealing force: a movable nut 4 penetrates through the input channel 2, the movable nut 4 is in threaded connection with the inner wall of the input channel 2, and an avoidance hole 10 for the thimble 5 to penetrate through is formed in the center of the movable nut 4; the first end of the compression spring is connected with the sealing element 6, and the second end is connected with the movable nut 4. The distance between the movable nut 4 and the sealing platform 7 is controlled, so that the compression degree of the compression spring can be controlled, and the sealing pressure of the sealing element 6 is further controlled; it is also possible to control the gap between the seal member 6 and the seal table 7 to adjust the flow rate of the molten raw material, as shown in fig. 2 and 4.
And the end surface of the movable nut 4, which is far away from the sealing element 6, is provided with a plugging blind hole 3 for driving the movable nut 4 to rotate. As shown in fig. 6, the blind plugging hole 3 may be a regular polygon, typically a regular hexagon. Insert the body 1 with the sleeve instrument in, the tip of sleeve instrument inserts in the grafting blind hole 3 and blocks with removal nut 4, pulls the sleeve instrument and can drive removal nut 4 and rotate to make it remove along input channel 2, adjustable compression spring's degree of compression in the removal.
Finally, the outlet of the pipe body 1 is formed in a pointed shape, and the first end of the thimble 5 is set as a tip.
As shown in fig. 7, the inlet of the tube body 1 is opposite to the outlet, and the inlet end of the tube body 1 is provided with a coupling nut 9. Through the connecting nut 9, the inlet end of the injection nozzle can be connected with the injection molding machine body.
The working condition of the injection nozzle of the injection molding machine is explained in the beneficial effect part.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. An injection nozzle of an injection molding machine is characterized by comprising a pipe body; the injection molding channel in the pipe body is provided with an input channel and an output channel which are connected end to end, and a sealing platform is formed at the joint of the output channel and the input channel; a thimble penetrates through the injection molding channel, the first end of the thimble extends out of the outlet of the pipe body, and a sealing element matched with the sealing platform is connected to the thimble; and a compression spring for pushing the sealing element to be jointed with the sealing table to form a sealing mechanism is connected to the sealing element.
2. An injection nozzle for an injection molding machine as claimed in claim 1, wherein said sealing land is formed as a sealing cone, and correspondingly, the sealing member is provided as a cone.
3. An injection nozzle of an injection molding machine as claimed in claim 1, wherein an inner diameter of said outlet passage is smaller than an inner diameter of said inlet passage.
4. The injection nozzle of an injection molding machine according to claim 1, wherein the inner wall of the output channel is provided with a plurality of expansion grooves, and the length direction of the expansion grooves is along the central axis of the output channel; multichannel the dilatation groove forms for annular round to evenly interval arranges.
5. The injection nozzle of an injection molding machine according to claim 1, wherein a moving nut is inserted into the input channel, the moving nut is in threaded connection with the inner wall of the input channel, and an avoiding hole for the ejector pin to pass through is formed in the center of the moving nut; the first end of the compression spring is connected with the sealing element, and the second end of the compression spring is connected with the movable nut.
6. The injection nozzle of an injection molding machine according to claim 5, wherein a blind insertion hole for driving the movable nut to rotate is formed in an end surface of the movable nut away from the sealing member.
7. An injection nozzle of an injection molding machine according to claim 1, wherein the outlet of the tubular body is formed in a pointed shape, and a first end of the ejector pin is provided as a tip.
8. An injection nozzle of an injection molding machine according to claim 1, wherein the inlet of the pipe body is opposite to the outlet, and the inlet end of the pipe body is provided with a coupling nut.
9. An injection nozzle of an injection molding machine according to any one of claims 1 to 8, wherein an inlet end of the injection nozzle is connected to an injection molding machine body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121149672.0U CN215703579U (en) | 2021-05-26 | 2021-05-26 | Injection molding nozzle of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121149672.0U CN215703579U (en) | 2021-05-26 | 2021-05-26 | Injection molding nozzle of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215703579U true CN215703579U (en) | 2022-02-01 |
Family
ID=80032725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121149672.0U Active CN215703579U (en) | 2021-05-26 | 2021-05-26 | Injection molding nozzle of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215703579U (en) |
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2021
- 2021-05-26 CN CN202121149672.0U patent/CN215703579U/en active Active
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