CN214820514U - Special-shaped needle sleeve of hot runner injection mold - Google Patents
Special-shaped needle sleeve of hot runner injection mold Download PDFInfo
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- CN214820514U CN214820514U CN202121570435.1U CN202121570435U CN214820514U CN 214820514 U CN214820514 U CN 214820514U CN 202121570435 U CN202121570435 U CN 202121570435U CN 214820514 U CN214820514 U CN 214820514U
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Abstract
The utility model discloses a hot runner injection mold's heterotypic needle cover, locate the cover body of hot mouth outer wall, locate the runner cover of the look cap of trading and locating set body outer wall including hot mouth, cover, the diapire of runner cover offsets with the top of trading the look cap, and it is spacing that the look cap can be with the bottom of hot mouth and the bottom of the cover body, and the middle part of hot mouth is equipped with fluid passage. The needle sleeve is arranged into a hot nozzle, a sleeve body, a sprue bush and a color changing cap, when the needle sleeve is installed, the main body and the nozzle core part in the hot nozzle are positioned and fixed through the sleeve body, so that the smooth transition of the inner wall of a fluid channel is ensured, and the phenomenon of plastic pollution or plastic residue is avoided when the color of plastic is changed; simultaneously through the cooperation of runner cover and trade look cap, make the plastic fluid of flowing out remain in trading look cap, avoid appearing the condition of blockking up fluid passage, and also guaranteed the constancy of temperature of plastic fluid through first heater strip and second heater strip, guaranteed the stability of moulding plastics and conveniently change the plastic of different colours.
Description
Technical Field
The utility model relates to a hot runner technical field, in particular to hot runner injection mold's heterotypic needle cover.
Background
Hot runners are systems of heating assemblies used in injection molds to inject molten plastic pellets into the mold cavity. The hot runner mold is a new structure in which the runner and the runner of the conventional mold or the three-plate mold are heated, and the runner do not need to be taken out for each molding.
However, in the process of injection molding, the existing needle sleeve has injection molding blind spots, which cause the plastic cement to be condensed and flow in the flow channel, so that only one color of plastic cement can be used. Meanwhile, the existing needle sleeve has the problem of uneven heating, which easily causes the problem of uneven volume of plastic fluid and influences the subsequent plastic molding; meanwhile, the existing needle sleeve is complex in structure and troublesome to install.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a hot runner injection mold's heterotypic needle cover aims at making needle cover simple to operate, and can guarantee the constancy of temperature, the look of trading of the plastic of being convenient for simultaneously.
In order to achieve the above object, the utility model provides a hot runner injection mold's heterotypic needle cover, locate the cover body of hot mouth outer wall, locate the runner cover of trading look cap and locating set external wall of cover including hot mouth, cover, the diapire of runner cover offsets with the top of trading look cap, it is spacing with the bottom of hot mouth and the bottom of the cover body to trade the look cap, the middle part of hot mouth is equipped with fluid passage, the outer wall of runner cover is equipped with first heater strip, the upper portion of hot mouth is equipped with the second heater strip.
Preferably, the upper end of hot mouth is equipped with the boss, the boss cover is equipped with the hanging platform, the hanging platform can be fixed in the flow distribution plate with hot mouth.
Preferably, first installation pipe is located to first heater strip, first installation pipe is fixed in the outer wall of hot mouth, the outer wall of first installation pipe is equipped with first draw-in groove, first heater strip is located on the first draw-in groove.
Preferably, the second heating wire is arranged on the second installation pipe, the second installation pipe is fixed on the outer wall of the sleeve body and the sprue bush, the outer wall of the second installation pipe is provided with a second clamping groove, and the second heating wire is arranged on the second clamping groove.
Preferably, the hot nozzle comprises a main body and a nozzle core part arranged at the bottom of the main body, the bottom of the main body is distributed in a three-stage ladder shape and comprises a first ladder, a second ladder and a third ladder which are distributed in sequence, and the nozzle core part comprises a first connecting part, a second connecting part and a third connecting part, wherein the first connecting part is equal to the third ladder in diameter, the second connecting part is connected with the first connecting part, and the third connecting part is connected with the second connecting part.
Preferably, the connection end of the outer wall of the third step and the outer wall of the first connection portion is provided with a wedge-shaped positioning groove, the inner wall of the sleeve body is provided with a limiting groove matched with the positioning groove, and a sealing ring is arranged between the positioning groove and the limiting groove.
Preferably, the inner wall and the outer wall of the sleeve body are respectively provided with a first clamping position and a second clamping position, the first clamping position abuts against the connecting ends of the first connecting portion and the second connecting portion and is used for installing the nozzle core portion on the main body, and the sprue bush is installed on the second clamping position.
Preferably, the inner wall of the sprue bush is provided with a third clamping position, and the third clamping position is matched with the second clamping position.
Preferably, the lower part of the inner wall of the color changing cap is a first inclined plane part, and the bottom end of the mouth core part and the bottom end of the sleeve body enclose a second inclined plane part matched with the first inclined plane part.
Preferably, the color changing cap is fixed on the sleeve body through threads.
The technical proposal of the utility model is that the needle sleeve is arranged as a hot nozzle, a sleeve body, a sprue bush and a color changing cap, when being installed, the main body and the nozzle core part in the hot nozzle are positioned and fixed through the sleeve body, thereby ensuring the smooth transition of the inner wall of the fluid channel and avoiding the occurrence of a dead glue position, thereby leading the plastic to be polluted or the plastic to remain when changing the color; simultaneously through the cooperation of runner cover and trade look cap, make the plastic fluid of flowing out remain in trading look cap, avoid appearing the condition of blockking up fluid passage, and also guaranteed the constancy of temperature of plastic fluid through first heater strip and second heater strip, guaranteed the stability of moulding plastics and conveniently change the plastic of different colours.
Drawings
Fig. 1 is a sectional view of the present invention;
fig. 2 is an exploded view (cross-sectional view) of the present invention;
fig. 3 is an exploded view (perspective view) of the present invention.
In the drawing, 1 is a hot nozzle, 10 is a fluid channel, 101 is a boss, 102 is a hanging table, 11 is a main body, 111 is a first step, 112 is a second step, 113 is a third step, 12 is a nozzle core, 121 is a first connecting portion, 122 is a second connecting portion, 123 is a third connecting portion, 2 is a color changing cap, 31 is a positioning groove, 32 is a limiting groove, 4 is a sleeve body, 5 is a sprue bush, 61 is a first clamping portion, 62 is a second clamping portion, 63 is a third clamping portion, 7 is a first heating wire, 71 is a first mounting pipe, 72 is a first clamping groove, 8 is a second heating wire, 81 is a second mounting pipe, 82 is a second clamping groove, 91 is a first inclined plane portion, and 92 is a second inclined plane portion.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indicators (such as … …, upper, lower, left, right, front, back, top, bottom, inner, outer, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial) are involved in the embodiments of the present invention, the directional indicators are only used to explain the relative position, motion, etc. of the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.
In addition, if there is a description relating to "first" or "second", etc. in the embodiments of the present invention, the description of "first" or "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1 to 3, a hot runner injection mold's abnormal shape needle cover, locate the cover body 4 of hot mouth 1 outer wall, locate the cover body 4 the cover body change look cap 2 and locate the runner cover 5 of the cover body 4 outer wall (runner cover 5 with change look cap 2 and can set up as an organic whole or components of a whole that can function independently according to the actual demand and set up the embodiment of the utility model provides an in for the components of a whole that can function independently setting, it is more convenient to make installation and processing, and manufacturing cost is lower), the diapire of runner cover 5 offsets with the top of changing look cap 2, it is spacing with the bottom of hot mouth 1 and the bottom of the cover body 4 to change look cap 2, the middle part of hot mouth 1 is equipped with fluid passage 10, the outer wall of runner cover 5 is equipped with first heater strip 7, the upper portion of hot mouth 1 is equipped with second heater strip 8.
The needle sleeve is arranged into a hot nozzle 1, a sleeve body 4, a sprue bush 5 and a color changing cap 2, when the needle sleeve is installed, a main body 11 and a nozzle core part 12 in the hot nozzle 1 are positioned and fixed through the sleeve body 4, the inner wall of a fluid channel 10 is ensured to be smooth and transitional, and the phenomenon of plastic pollution or plastic residue is avoided when the color of plastic is changed; simultaneously through the cooperation of runner cover 5 and trade look cap 2, make the plastic fluid that flows remain in trading look cap 2, avoid appearing blockking up the condition of fluid passage 10, and also guaranteed the constancy of temperature of plastic fluid through first heater strip 7 and second heater strip 8, guaranteed the stability of moulding plastics and conveniently change the plastic of different colours.
In the embodiment of the present invention, the upper end of the hot nozzle 1 is equipped with the boss 101, the boss 101 cover is equipped with the hanging table 102, the hanging table 102 can fix the hot nozzle 1 on the flow distribution plate. The boss 101 is arranged to facilitate the connection of the hot nozzle 1 and the flow distribution plate, and meanwhile, the arrangement of the boss 101 also enables the flow passage connection between the hot nozzle 1 and the flow distribution plate to be relatively sealed, so that the condition that the heat of the connection end is dissipated is avoided, and the constant temperature of the plastic fluid is ensured.
In the embodiment of the present invention, the first heating wire 7 is disposed on the first mounting pipe 71, the first mounting pipe 71 is fixed on the outer wall of the hot nozzle 1, the outer wall of the first mounting pipe 71 is provided with a first clamping groove 72, and the first heating wire 7 is disposed on the first clamping groove 72. The first heater wire 7 is provided in a spiral shape so as to meander along the outer peripheral wall of the first mounting pipe 71.
In the embodiment of the present invention, the second heating wire 8 is disposed on the second mounting pipe 81, the second mounting pipe 81 is fixed on the outer wall of the sleeve body 4 and the sprue bush 5, the outer wall of the second mounting pipe 81 is provided with the second clamping groove 82, and the second heating wire 8 is disposed on the second clamping groove 82. The second heating wire 8 is spirally arranged, and the distance between the thread lines is smaller, so that the temperature of the hot nozzle 1 can be ensured to be consistent, and the condition of temperature loss is avoided.
In the embodiment of the present invention, the hot nozzle 1 includes a main body 11 and a nozzle portion 12 disposed at the bottom of the main body 11, the bottom of the main body 11 is distributed in a three-step shape, including a first step 111, a second step 112 and a third step 113 distributed in sequence, the nozzle portion 12 includes a first connection portion 121 having a same diameter as the third step 113, a second connection portion 122 connected to the first connection portion 121, and a third connection portion 123 connected to the second connection portion 122. Wherein the third step 113 and the first connecting portion 121 and the inner wall therebetween are horizontal, thereby ensuring that the plastic fluid can move smoothly, avoiding the occurrence of a dead glue position, namely, cleaning a blind area (the plastic is easy to solidify).
The embodiment of the present invention provides an embodiment, the connection end of the outer wall of the third step 113 and the outer wall of the first connection portion 121 is provided with a wedge-shaped positioning groove 31, the inner wall of the sleeve body 4 is provided with a limiting groove 32 matched with the positioning groove 31, and a sealing ring is provided between the positioning groove 31 and the limiting groove 32. The mouth core part 12 is arranged on the main body through the sleeve body 4, the relative sealing performance between the mouth core part 12 and the main body 11 is ensured, and the disassembly and the cleaning are convenient. Of course, for some needle sleeves of fixed colors, the mouth-center portion 12 may also be welded directly to the main body 11.
The embodiment of the present invention provides, the inner wall and the outer wall of the sleeve body 4 are respectively provided with a first clamping portion 61 and a second clamping portion 62, the first clamping portion 61 abuts against the connecting ends of the first connecting portion 121 and the second connecting portion 122 for installing the nozzle portion 12 on the main body 11, and the sprue bush 5 is installed on the second clamping portion 62. Namely, the nozzle part 12 is fixed by the positioning action of the first clamping position 61, thereby avoiding the condition that the gap is generated in the screw thread fit between the existing nozzle part 12 and the main body 11 and avoiding the generation of dead glue.
In the embodiment of the present invention, the inner wall of the sprue bush 5 is provided with a third clamping position 63, and the third clamping position 63 is matched with the second clamping position 62. Wherein the sprue bush 5 and the bush body 4 can be fixed by screw threads or screws.
In the embodiment of the present invention, the lower portion of the inner wall of the color changing cap 2 is a first inclined plane portion 91, and the bottom end of the mouth core portion 12 and the bottom end of the sleeve body 4 enclose a second inclined plane portion 92 matched with the first inclined plane portion 91. Therefore, the sleeve body 4 and the mouth core part 12 are more stably installed, and when the residual plastic is left due to inertia, the residual plastic can flow onto the color changing cap 2 to avoid remaining in the mouth core part 12.
In the embodiment of the present invention, the color changing cap 2 is fixed on the cover body 4 through a thread, and the existing technology can be adopted.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. The utility model provides a hot runner injection mold's heterotypic needle cover, its characterized in that locates the cover body of hot mouth outer wall, locates the color changing cap of the cover body and locates the runner cover of set body outer wall including hot mouth, cover, the diapire of runner cover offsets with the top of the color changing cap, it can be spacing with the bottom of hot mouth and the bottom of the cover body to change the color cap, the middle part of hot mouth is equipped with fluid passage, the outer wall of runner cover is equipped with first heater strip, the upper portion of hot mouth is equipped with the second heater strip.
2. The shaped needle sheath of a hot runner injection mold as defined in claim 1, wherein: the upper end of hot mouth is equipped with the boss, the boss cover is equipped with the string platform, the string platform can be fixed in the flow distribution plate with hot mouth.
3. The shaped needle sheath of a hot runner injection mold as defined in claim 1, wherein: first installation pipe is located to first heater strip, first installation pipe is fixed in the outer wall of hot mouth, the outer wall of first installation pipe is equipped with first draw-in groove, first heater strip is located on the first draw-in groove.
4. The shaped needle sheath of a hot runner injection mold as defined in claim 1, wherein: the second heating wire is arranged on the second installation pipe, the second installation pipe is fixed on the outer wall of the sleeve body and the outer wall of the sprue bush, a second clamping groove is formed in the outer wall of the second installation pipe, and the second heating wire is arranged on the second clamping groove.
5. The shaped needle sheath of a hot runner injection mold as defined in claim 1, wherein: the hot nozzle comprises a main body and a nozzle core part arranged at the bottom of the main body, wherein the bottom of the main body is distributed in a three-stage ladder shape and comprises a first ladder, a second ladder and a third ladder which are distributed in sequence, and the nozzle core part comprises a first connecting part, a second connecting part and a third connecting part, the first connecting part is connected with the second connecting part, the first connecting part is equal in diameter to the third ladder, the second connecting part is connected with the first connecting part, and the third connecting part is connected with the second connecting part.
6. The shaped needle sheath of a hot runner injection mold as defined in claim 5, wherein: the connecting end of the outer wall of the third step and the outer wall of the first connecting part is provided with a wedge-shaped positioning groove, the inner wall of the sleeve body is provided with a limiting groove matched with the positioning groove, and a sealing ring is arranged between the positioning groove and the limiting groove.
7. The shaped needle sheath of a hot runner injection mold as defined in claim 5, wherein: the inner wall and the outer wall of the sleeve body are respectively provided with a first clamping position and a second clamping position, the first clamping position abuts against the connecting ends of the first connecting portion and the second connecting portion and is used for installing the nozzle core portion on the main body, and the sprue bush is installed on the second clamping position.
8. The shaped needle sheath of a hot runner injection mold as defined in claim 7, wherein: the inner wall of the sprue bush is provided with a third clamping position, and the third clamping position is matched with the second clamping position.
9. The shaped needle sheath of a hot runner injection mold as defined in claim 8, wherein: the lower part of the inner wall of the color changing cap is a first inclined plane part, and the bottom end of the mouth core part and the bottom end of the sleeve body enclose a second inclined plane part matched with the first inclined plane part.
10. The shaped needle sheath of a hot runner injection mold as defined in claim 9, wherein: the color changing cap is fixed on the sleeve body through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121570435.1U CN214820514U (en) | 2021-07-09 | 2021-07-09 | Special-shaped needle sleeve of hot runner injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121570435.1U CN214820514U (en) | 2021-07-09 | 2021-07-09 | Special-shaped needle sleeve of hot runner injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214820514U true CN214820514U (en) | 2021-11-23 |
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ID=78814032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121570435.1U Active CN214820514U (en) | 2021-07-09 | 2021-07-09 | Special-shaped needle sleeve of hot runner injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214820514U (en) |
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2021
- 2021-07-09 CN CN202121570435.1U patent/CN214820514U/en active Active
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