CN217553006U - Injection mold hot runner valve needle mouth structure of gluing - Google Patents
Injection mold hot runner valve needle mouth structure of gluing Download PDFInfo
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- CN217553006U CN217553006U CN202221537791.8U CN202221537791U CN217553006U CN 217553006 U CN217553006 U CN 217553006U CN 202221537791 U CN202221537791 U CN 202221537791U CN 217553006 U CN217553006 U CN 217553006U
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Abstract
The utility model discloses an injection mold hot runner valve needle glue opening structure, which comprises a cover half component, a movable mold component and a needle valve component, wherein the cover half component is provided with an installation cavity and a glue injection hole communicated with the installation cavity; a cavity for molding the injection molding piece is arranged between the movable mold component and the fixed mold component, and the glue injection hole is communicated with the cavity; the needle valve assembly comprises a valve body and a valve needle, the valve body is installed in the installation cavity and is provided with a glue injection flow channel, the glue injection flow channel is communicated with a glue injection hole, the valve needle is movably installed in the glue injection flow channel and is provided with an opening state for opening the glue injection hole and a blocking state for blocking the glue injection hole, and in the blocking state, the end part of the valve needle penetrates through the glue injection hole to stretch into the cavity for forming a hole structure on an injection molding piece. The utility model discloses technical scheme when sealing glue through the needle, the dysmorphism pore structure on the shaping injection molding of can also being convenient for as required.
Description
Technical Field
The utility model relates to an injection moulding technical field, in particular to injection mold hot runner needle gum mouth structure.
Background
Injection molds are typically provided with a gate for delivering hot melt plastic through a hot runner to a cavity of the injection mold for injection molding into a predetermined shape. At present, a glue opening on an injection mold is usually a circular glue opening, and a valve needle cannot mold a corresponding hole structure (a hexagonal hole, a square hole or other special-shaped holes and the like) on an injection molding part according to requirements.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing an injection mold hot runner needle glues a mouthful structure, when aiming at going on sealing through the needle and gluing, can be convenient for the pore structure on the shaping injection molding as required.
In order to achieve the above object, the utility model provides an injection mold hot runner needle gum mouth structure, include:
the fixed die assembly is provided with a mounting cavity and a glue injection hole communicated with the mounting cavity;
a cavity for molding an injection molding piece is arranged between the movable mold component and the fixed mold component, and the glue injection hole is communicated with the cavity;
needle valve subassembly, including valve body and needle, the valve body install in the installation cavity to be equipped with the injecting glue runner, the injecting glue runner with injecting glue hole intercommunication, needle movable install in the injecting glue runner, and have and open the open mode and the shutoff of injecting glue hole are stopped up the shutoff state of injecting glue hole the shutoff state, the tip of needle passes injecting glue hole stretches into in the die cavity for pore structure on the shaping injection molding.
Optionally, the end of the valve needle is shaped to conform to the shape of the bore in the injection molded part.
Optionally, the cross-section of the valve needle end is polygonal, circular or elliptical.
Optionally, the cross-section of the end of the valve needle is hexagonal.
Optionally, the glue injection hole is arranged in a tapered manner in a direction close to the cavity, and the valve needle and the part matched with the glue injection hole are arranged in a tapered manner to be matched and abutted to the inner wall of the glue injection hole.
Optionally, the end of the valve needle is tapered.
Optionally, the injection mold hot runner valve needle mouth structure further includes a driving part, the driving part is installed in the fixed mold assembly and connected to one end of the valve needle far away from the glue injection hole.
Optionally, the drive member is a pneumatic or hydraulic cylinder.
Optionally, a rotation stopping structure is arranged on the driving part, and the rotation stopping structure is matched with the valve needle to limit the valve needle to rotate.
Optionally, the cover half subassembly is equipped with a plurality ofly the installation cavity to correspond every the installation cavity is equipped with one the injecting glue hole, each the injecting glue hole all with the die cavity intercommunication, every the installation cavity all is equipped with needle valve assembly.
The utility model discloses technical scheme is through the injecting glue hole that is equipped with installation cavity and intercommunication installation cavity at the cover half subassembly to when making needle valve assembly's needle be in the shutoff state of shutoff injecting glue hole, make the tip of needle pass the injecting glue hole and stretch into the die cavity, thereby can the shaping pore structure on the injection molding. So set up, when the injection hole is plugged up in the needle shutoff, can also be through the pore structure on the needle shaping injection molding, the shape of needle tip can set up as required moreover to can select the needle that the tip shape corresponds with the pore structure shape according to the shape of pore structure on the injection molding and carry out the shaping. Meanwhile, the production of stub bars and the formation of sealing glue marks on the surfaces of the injection molded parts can be avoided, the appearance requirements can be well met, and the situation that the stub bars and the sealing glue marks are eliminated by additionally processing the surfaces of the injection molded parts is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a sectional view of an embodiment of a gate structure of a hot runner valve needle of the injection mold of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1, with the valve needle in the blocking position;
FIG. 3 is a schematic view of the valve needle of FIG. 2 in an open position;
FIG. 4 is a schematic structural view of the needle valve assembly of FIG. 1;
FIG. 5 is a schematic structural view of the needle valve assembly and injection molded part of FIG. 1;
fig. 6 is an enlarged view of fig. 5 at B.
The reference numbers indicate:
| reference numerals | Name(s) | Reference numerals | Name(s) |
| 10 | Fixed die |
211 | |
| 11 | |
22 | |
| 12 | |
30 | |
| 20 | |
31 | |
| 21 | |
40 | Injection molding piece |
The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, back, 8230; \8230;) are provided in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "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 meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. 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 to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an injection mold hot runner needle mouth structure of gluing for the shaping injection molding, for example, be used for the shaping surface to have porous structure's injection molding.
In the embodiment of the present invention, as shown in fig. 1 to fig. 6, the injection mold hot runner valve needle gate structure includes a fixed mold component 10, a movable mold component (not shown) and a needle valve component 20, the fixed mold component 10 is provided with an installation cavity 11 and a glue injection hole 12 communicating with the installation cavity 11. A cavity for molding the injection molding part 40 is arranged between the movable mold component and the fixed mold component 10, and the glue injection hole 12 is communicated with the cavity.
The needle valve assembly 20 comprises a valve body 21 and a valve needle 22, the valve body 21 is installed in the installation cavity 11 and is provided with a glue injection flow channel 211, the glue injection flow channel 211 is communicated with the glue injection hole 12, the valve needle 22 is movably installed in the glue injection flow channel 211 and has an opening state for opening the glue injection hole 12 and a blocking state for blocking the glue injection hole 12, and in the blocking state, the end part of the valve needle 22 penetrates through the glue injection hole 12 to extend into the cavity for forming a hole structure on the injection molding piece 40.
The movable mold assembly and the fixed mold assembly 10 can refer to the structure of an existing injection mold, for example, the fixed mold assembly 10 comprises a fixed mold plate, a runner plate, a fixed mold cavity plate and the like, at this time, the installation cavity 11 is at least formed in the runner plate and the fixed mold cavity plate, the glue injection holes 12 are formed in the fixed mold cavity plate, a cavity is formed between the fixed mold cavity plate and the movable mold assembly, and other conventional structures are not described in detail herein any more. In addition, other structures of the needle valve assembly 20 can also refer to the existing needle valve structure, and are not described in detail herein.
In this embodiment, when the injection-molded part 40 needs to be molded by injecting the molten adhesive into the cavity, the needle 22 can be moved toward the inside of the injection passage 211, so that the end portion of the needle 22 is extracted from the injection hole 12 and is in an open state, and the molten adhesive in the injection passage 211 can flow from the injection hole 12 to the cavity. When the molten glue in the cavity reaches a predetermined amount, the needle 22 is moved towards the cavity to plug the injection hole 12 to be in a blocking state, and at this time, the needle 22 can plug the injection hole 12 to prevent the molten glue from flowing out of the injection hole 12 when the mold is opened. At the same time, the end of the needle 22 can project into the mold cavity for molding the hole structure in the injection molded part 40. That is to say, when valve needle 22 blocks up the gluey hole 12 of packing, can also be through the pore structure on the valve needle 22 shaping injection molding 40, can avoid the surface of injection molding 40 to produce the stub bar and form and seal the gluey impression simultaneously, can satisfy the outward appearance requirement well, avoid in addition to the surface of injection molding 40 processing eliminate the stub bar and seal the condition of gluing the impression. The hole structure on the injection molding part 40 can be a through hole or a blind hole for decoration.
The utility model discloses technical scheme is through the injecting glue hole 12 that is equipped with installation cavity 11 and intercommunication installation cavity 11 at cover half subassembly 10 to when making needle valve assembly 20's needle 22 be in the shutoff state of shutoff injecting glue hole 12, make needle valve 22's tip pass injecting glue hole 12 and stretch into in the die cavity, thereby can the shaping pore structure on the injection molding 40. By the arrangement, when the valve needle 22 blocks the injection hole 12, the hole structure on the injection molding part 40 can be molded by the valve needle 22, and the shape of the end part of the valve needle 22 can be set as required, so that the valve needle 22 with the shape of the end part corresponding to the shape of the hole structure can be selected according to the shape of the hole structure on the injection molding part 40 for molding. Meanwhile, the production of stub bars and the formation of sealing glue marks on the surface of the injection molding part 40 can be avoided, the appearance requirement can be well met, and the situation that the stub bars and the sealing glue marks are eliminated by additionally processing the surface of the injection molding part 40 is avoided.
In some embodiments, the end of the valve needle 22 is shaped to conform to the shape of the bore in the injection molded part 40. Specifically, the injection molded part 40 is provided with a plurality of through holes (for example, through holes for heat dissipation and other purposes) or blind holes, for example, when the through holes on the injection molded part 40 are round holes, the end portion of the valve needle 22 extending into the cavity is cylindrical, or when the through holes on the injection molded part 40 are hexagonal holes, the cross section of the end portion of the valve needle 22 extending into the cavity is hexagonal, and so on. The shape of the end part of the valve needle 22 is consistent with that of the through hole on the injection molding part 40, so that the through hole on the injection molding part 40 and the hole structure formed by the valve needle 22 are uniform, and the appearance requirement of the injection molding part 40 can be well met. Of course, in other embodiments, the shape of the end of the valve needle 22 and the shape of the through hole in the injection molded part 40 may be different depending on the design requirements of the injection molded part 40.
Wherein in some embodiments the end of the valve needle 22 is polygonal, circular or elliptical in cross-section. For example, in this embodiment, the end of the valve needle 22 is hexagonal in cross-section.
In some embodiments, the glue injection hole 12 is tapered in a direction approaching the cavity, and the portion of the valve needle 22 that is engaged with the glue injection hole 12 is tapered to fit against the inner wall of the glue injection hole 12. Specifically, the shape of the portion of the valve needle 22 corresponding to the glue injection hole 12 is consistent with the shape of the glue injection hole 12, for example, when the cross section of the end of the valve needle 22 is circular, the cross section of the glue injection hole 12 is also circular; or when the cross section of the end part of the valve needle 22 is hexagonal, the cross section of the glue injection hole 12 is also hexagonal. By the arrangement, when the valve needle 22 moves to the blocking state, the valve needle 22 can be better abutted against the inner wall of the glue injection hole 12, so that the condition that glue leaks from a gap between the glue injection hole 12 and the valve needle 22 can be better prevented. Meanwhile, the valve needle 22 and the glue injection hole 12 are not sealed through a small gap, so that the requirement on the matching precision between the valve needle 22 and the glue injection hole 12 is low, the machining precision of the valve needle 22 and the glue injection hole 12 can be reduced, and the cost is reduced.
In some embodiments, the end of the valve needle 22 is tapered. That is, the portion of the valve needle 22 for molding the hole structure of the injection molded part 40 is tapered in the direction close to the movable mold assembly, so that the product can be conveniently separated from the valve needle 22 during demolding, and demolding is facilitated. Of course, in other embodiments, the end of the valve needle 22 is cylindrical, elliptical or prismatic in configuration.
In some embodiments, the injection mold hot runner valve pin gate structure further includes a driving member 30, and the driving member 30 is mounted on the stationary mold component 10 and connected to an end of the valve pin 22 far away from the injection hole 12. That is, the valve needle 22 can be driven by the drive element 30 to switch between the open state and the blocking state, which can be automated better.
In some embodiments, the drive member 30 is a pneumatic or hydraulic cylinder. The structure is simple and convenient to set.
In some embodiments, the driving member 30 is provided with a rotation stopping structure 31, and the rotation stopping structure 31 cooperates with the valve needle 22 to limit the rotation of the valve needle 22. Through setting up rotation stopping structure 31, can prevent the condition that needle 22 is rotatory in the motion process, and then guarantee the accuracy of needle 22 and the cooperation of injecting glue hole 12 and the hole structure on injection molding 40.
The rotation stopping structure 31 may be fixed to the driving member 30 or the fixed mold assembly 10, the rotation stopping structure 31 is provided with a sliding hole, the sliding hole is a non-rotating hole (such as an elliptical hole, a polygonal hole, a kidney-shaped hole, or a special-shaped hole), the valve needle 22 has a position-limiting section, the shape of the position-limiting section is consistent with the shape of the sliding hole, and the position-limiting section is axially slidably mounted in the sliding hole. In other embodiments, the valve needle 22 is provided with a limit protrusion, the rotation stopping structure 31 is fixed relative to the fixed mold assembly 10, the rotation stopping structure 31 is provided with a limit groove, the limit groove extends along the length direction of the valve needle 22, and the limit protrusion is slidably mounted in the limit groove.
In some embodiments, the fixed die assembly 10 is provided with a plurality of installation cavities 11, one glue injection hole 12 is arranged corresponding to each installation cavity 11, each glue injection hole 12 is communicated with the die cavity, and each installation cavity 11 is provided with a needle valve assembly 20. So set up, increased the quantity in injecting glue hole 12, can promote the interior melten gel filling speed of die cavity for injection molding 40 can rapid prototyping, can also reduce the condition that injection molding 40 all places produced the defect because of the setting time phase difference is big.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides an injection mold hot runner needle mouth structure of gluing which characterized in that includes:
the fixed die assembly is provided with a mounting cavity and a glue injection hole communicated with the mounting cavity;
a cavity for molding an injection molding piece is arranged between the movable mold component and the fixed mold component, and the glue injection hole is communicated with the cavity;
needle valve subassembly, including valve body and needle, the valve body install in the installation cavity to be equipped with the injecting glue runner, the injecting glue runner with injecting glue hole intercommunication, needle movable install in the injecting glue runner, and have and open the open mode and the shutoff of injecting glue hole are stopped the shutoff state of injecting glue hole the shutoff state, the tip of needle passes the injecting glue hole stretches into in the die cavity for pore structure on the shaping injection molding.
2. The injection mold hot runner valve pin gate structure of claim 1, wherein the end of the valve pin is shaped to conform to the shape of the hole in the injection molded part.
3. The injection mold hot runner valve pin gate structure of claim 2, wherein the cross-section of the end of the valve pin is polygonal, circular or elliptical.
4. An injection mold hot runner valve pin gate structure as claimed in claim 3, wherein the cross-section of the end of the valve pin is hexagonal.
5. An injection mold hot runner valve needle gate structure as claimed in any one of claims 1 to 4, wherein the injection hole is tapered in a direction approaching the cavity, and a portion of the valve needle that mates with the injection hole is tapered to fit against an inner wall of the injection hole.
6. An injection mold hot runner valve pin gate structure as claimed in claim 5, wherein the end of the valve pin is tapered.
7. The injection mold hot runner valve pin gate structure of claim 1, further comprising a driving member mounted to the stationary mold component and connected to an end of the valve pin away from the injection hole.
8. An injection mold hot runner valve pin gate structure as claimed in claim 7, wherein said drive member is an air cylinder or a hydraulic cylinder.
9. The injection mold hot runner valve pin gate structure of claim 7, wherein the driving member is provided with a rotation stopping structure, and the rotation stopping structure cooperates with the valve pin to limit the valve pin from rotating.
10. An injection mold hot runner valve needle gate structure as claimed in claim 1, wherein said stationary mold assembly is provided with a plurality of said mounting cavities, and one said injection hole is provided corresponding to each said mounting cavity, each said injection hole communicates with said mold cavity, and each said mounting cavity is provided with said needle valve assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221537791.8U CN217553006U (en) | 2022-06-16 | 2022-06-16 | Injection mold hot runner valve needle mouth structure of gluing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221537791.8U CN217553006U (en) | 2022-06-16 | 2022-06-16 | Injection mold hot runner valve needle mouth structure of gluing |
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|---|---|
| CN217553006U true CN217553006U (en) | 2022-10-11 |
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|---|---|---|---|
| CN202221537791.8U Active CN217553006U (en) | 2022-06-16 | 2022-06-16 | Injection mold hot runner valve needle mouth structure of gluing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116811148A (en) * | 2023-08-04 | 2023-09-29 | 厦门捷信达精密科技股份有限公司 | Needle valve adjusting mechanism and injection mold |
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2022
- 2022-06-16 CN CN202221537791.8U patent/CN217553006U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116811148A (en) * | 2023-08-04 | 2023-09-29 | 厦门捷信达精密科技股份有限公司 | Needle valve adjusting mechanism and injection mold |
| CN116811148B (en) * | 2023-08-04 | 2024-04-26 | 厦门捷信达精密科技股份有限公司 | Needle valve adjusting mechanism and injection mold |
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