CN210820703U

CN210820703U - Valve needle, hot nozzle assembly and hot runner system

Info

Publication number: CN210820703U
Application number: CN201921732318.3U
Authority: CN
Inventors: 李象烈
Original assignee: Yudo Suzhou Hot Runner Systems Co Ltd
Current assignee: Yudo Suzhou Hot Runner Systems Co Ltd
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-06-23
Anticipated expiration: 2029-10-16

Abstract

The utility model discloses a needle, hot mouth subassembly and hot runner system for hot mouth subassembly, wherein, the needle includes the body part that extends along the longitudinal axis and locates the terminal of body part seals gluey portion, seal the extension width of gluing portion on the first direction and be greater than seal the extension width of gluing portion on the second direction, first direction and the equal perpendicular to of second direction the longitudinal axis, just become certain contained angle between first direction and the second direction. The utility model discloses can adapt to narrow position well, also can satisfy into gluey volume to need not to set up a lot of runners and advance to glue, thereby make the structure simpler.

Description

Valve needle, hot nozzle assembly and hot runner system

Technical Field

The utility model relates to a hot runner mold field especially relates to a needle, hot mouth subassembly and hot runner system.

Background

At present, the injection mold generally adopted in the injection molding industry is a hot runner injection mold, and compared with a common mold, the quality of a plastic product injected by a hot runner system is higher, and the hot runner system has the advantages of saving raw materials, improving the production efficiency, improving the automation degree and the like.

The hot nozzle component comprises a nozzle tip and a valve needle 2 movably arranged on the nozzle tip, and when the injection molding is finished, the valve needle 2 closes a pouring gate sealing glue, so that the valve needle 2 plays a role in opening or closing a pouring gate in a hot runner system and is an important molding gate. Some products, such as large thin-wall parts like plastic baskets for televisions, need to be directly glued to the product ribs. At present, the sealing end 4 of the valve needle 2 is cylindrical or conical, and when sealing is carried out, due to position limitation, a pouring gate is not too large, so that the glue feeding amount is not large enough or more pouring gates are required to be added for glue feeding, and the structure is more complex.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a needle, hot mouth subassembly and hot runner system can adapt to the narrow position well, also can satisfy into gluey volume to need not to set up a lot of runners and advance to glue, thereby make the structure simpler.

In order to achieve one of the above objects, an embodiment of the present invention provides a valve needle for a hot nozzle assembly, wherein the valve needle includes a body portion extending along a longitudinal axis and a glue sealing portion disposed at an end of the body portion, an extension width of the glue sealing portion in a first direction is greater than an extension width of the glue sealing portion in a second direction, the first direction and the second direction are perpendicular to the longitudinal axis, and a certain included angle is formed between the first direction and the second direction.

As a further improvement of an embodiment of the present invention, the first direction and the second direction are perpendicular to each other.

As a further improvement of an embodiment of the present invention, the glue sealing portion includes a connecting end connected to the body portion and a free end opposite to the connecting end, and the glue sealing portion extends from the connecting end to the free end toward a direction gradually close to the longitudinal axis.

As a further improvement of an embodiment of the present invention, the sealing portion includes a first peripheral portion extending from the connecting end and forming an angle with the longitudinal axis, and a second peripheral portion connected to the first peripheral portion and extending to the free end, the second peripheral portion being parallel to the longitudinal axis.

As a further improvement of an embodiment of the present invention, a surface of the first peripheral portion is a curved surface.

As a further improvement of an embodiment of the present invention, the outer peripheral surface of the second peripheral portion includes a first plane, a second plane symmetrical to the first plane with respect to the longitudinal axis, a first arc surface and a second arc surface both connecting the first plane and the second plane, and the first arc surface and the second arc surface are symmetrical with respect to the longitudinal axis.

In order to realize one of the above objects of the present invention, an embodiment of the present invention further provides a hot nozzle assembly, the hot nozzle assembly includes a nozzle tip and a valve needle, the nozzle tip defines a flow channel and a gate communicated with the flow channel, the valve needle is disposed in the flow channel, and the valve needle is movable along a longitudinal axis to open or close the gate, wherein the valve needle includes a body portion extending along the longitudinal axis and a sealant portion disposed at a distal end of the body portion, the extending width of the sealant portion in a first direction is greater than the extending width of the sealant portion in a second direction, the first direction and the second direction are all perpendicular to the longitudinal axis, and a certain included angle is formed between the first direction and the second direction.

In order to achieve one of the above objects, an embodiment of the present invention further provides a hot runner system, wherein the hot runner system includes the hot nozzle assembly according to any one of the above technical solutions.

Compared with the prior art, the beneficial effects of the utility model reside in that: because the extension width of the glue sealing part in the first direction is greater than that of the glue sealing part in the second direction, and a certain included angle is formed between the first direction and the second direction. Like this, when the large-scale newspaper wall spare of pouring, not only can adapt to narrow position well in the second direction, and vertically elongated in the first direction and advanced gluey mouth, satisfied advancing gluey volume to need not set up a lot of runners and advance gluey, consequently the structure is simpler.

Drawings

FIG. 1 is a front view of a valve pin in a prior art hot nozzle assembly;

figure 2 is a bottom view of the valve needle of figure 1;

FIG. 3 is a front view of a valve pin in a hot nozzle assembly according to an embodiment of the present invention;

figure 4 is a left side view of the valve needle of figure 3;

figure 5 is a schematic view of the valve needle of figure 3 in an applied condition;

figure 6 is a schematic perspective view of a portion of the valve needle of figure 3;

figure 7 is a schematic perspective view of another directional portion of the valve needle of figure 3;

figure 8 is a bottom view of the valve needle of figure 3.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art based on these embodiments are all included in the scope of the present invention.

In the various illustrations of the present application, certain dimensions of structures or portions may be exaggerated relative to other structures or portions for ease of illustration and, thus, are provided to illustrate only the basic structure of the subject matter of the present application.

Terms such as "upper," "above," "lower," "below," and the like, used herein to denote relative spatial positions, are used for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 3 to 8, the specific embodiment of the present invention provides a hot runner system, which includes a hot nozzle assembly, a temperature control box and a hot runner formed in the hot nozzle assembly at least, and through means of heating and temperature control for the glue injection material, the plastic in the molten state is poured into the cavity of the mold after passing through the hot nozzle assembly in sequence, so as to avoid the formation of the solidified material of the pouring system.

The hot nozzle assembly comprises a nozzle tip and a valve pin 10, the valve pin 10 being located within the nozzle tip. Typically, the hot nozzle assembly further includes a hot nozzle (not shown) to which the nozzle tip is attached. The tip defines a flow passage and a gate communicating with the flow passage, the valve pin 10 being disposed within the flow passage and the valve pin 10 being movable along the longitudinal axis 13 to open or close the gate. The valve needle 10 includes a body portion 14 extending along the longitudinal axis 13, and an adhesive sealing portion 16 disposed at a distal end of the body portion 14, wherein an extension width of the adhesive sealing portion 16 in a first direction is greater than an extension width of the adhesive sealing portion 16 in a second direction, both the first direction and the second direction are perpendicular to the longitudinal axis 13, and an included angle is formed between the first direction and the second direction. Preferably, the first direction and the second direction are perpendicular. Of course, the first direction and the second direction may be set to be not perpendicular to each other, but at other included angles. When the large thin-walled member 12 is cast, the valve pin 10 is in relative relation to the thin-walled member 12 such that the first direction is parallel to the longer longitudinal direction of the thin-walled member 12 and the second direction is parallel to the thinner thickness direction of the thin-walled member 12.

In the preferred embodiment, the extending width of the glue sealing portion 16 in the first direction is greater than the extending width of the glue sealing portion 16 in the second direction, and an included angle is formed between the first direction and the second direction. Therefore, when the large thin-wall part 12 is poured, the narrow position can be well adapted to in the second direction, the glue inlet is longitudinally elongated in the first direction, the glue inlet amount is met, a plurality of gates are not required to be arranged for glue inlet, and the structure is simpler.

The sealant portion 16 includes a connecting end 18 connected to the body portion 14 and a free end 20 opposite the connecting end 18, and the sealant portion 16 extends from the connecting end 18 to the free end 20 in a direction gradually approaching the longitudinal axis 13. In addition, the sealant portion 16 includes a first peripheral portion 22 extending from the connecting end 18 and angled with respect to the longitudinal axis 13 and a second peripheral portion 24 connected to the first peripheral portion 22 and extending to the free end 20, the second peripheral portion 24 being parallel to the longitudinal axis 13. Of course, the sealant 16 may be designed in other structures as long as the extension width in the first direction is larger than that in the second direction.

Specifically, the surface of the first peripheral portion 22 is a curved surface. Of course, the surface of the first peripheral portion 22 may be provided in other configurations, such as a plurality of planes.

Further, the outer peripheral surface of the second peripheral portion 24 includes a first flat surface 26, a second flat surface 28 symmetrical to the first flat surface 26 with respect to the longitudinal axis 13, a first arc surface 30 and a second arc surface 32 each connecting the first flat surface 26 and the second flat surface 28, and the first arc surface 30 and the second arc surface 32 are symmetrical with respect to the longitudinal axis 13. This arrangement makes the second peripheral portion 24 simple in construction and easy to manufacture. Similarly, the outer peripheral surface of the second peripheral portion 24 may be formed in other configurations, such as a plurality of flat surfaces, a plurality of curved surfaces, or a plurality of curved surfaces and a plurality of flat surfaces.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. A valve needle for a hot nozzle assembly, the valve needle comprising a body portion extending along a longitudinal axis, and an adhesive sealing portion disposed at a distal end of the body portion, wherein an extension width of the adhesive sealing portion in a first direction is greater than an extension width of the adhesive sealing portion in a second direction, the first direction and the second direction are both perpendicular to the longitudinal axis, and an included angle is formed between the first direction and the second direction.

2. The valve needle of claim 1 wherein the first and second directions are perpendicular.

3. The valve needle of claim 1 wherein the gel segment includes an attachment end attached to the body portion and a free end opposite the attachment end, the gel segment extending from the attachment end to the free end in a direction progressively closer to the longitudinal axis.

4. The valve needle as defined in claim 3, wherein the sealant portion comprises a first peripheral portion extending from the connecting end and at an angle to the longitudinal axis and a second peripheral portion connected to the first peripheral portion and extending to the free end, the second peripheral portion being parallel to the longitudinal axis.

5. A valve needle as claimed in claim 4, wherein the surface of the first peripheral portion is curved.

6. The valve needle of claim 4 wherein the outer peripheral surface of the second peripheral portion comprises a first planar surface, a second planar surface symmetrical to the first planar surface relative to the longitudinal axis, a first arcuate surface and a second arcuate surface each connecting the first planar surface and the second planar surface, and the first arcuate surface and the second arcuate surface are symmetrical about the longitudinal axis.

7. A hot nozzle assembly, the hot nozzle assembly comprising a nozzle tip and a valve pin, the nozzle tip defining a flow channel and a gate in communication with the flow channel, the valve pin being disposed in the flow channel, and the valve pin being movable along a longitudinal axis to open or close the gate, wherein the valve pin comprises a body portion extending along the longitudinal axis and an encapsulation portion disposed at a distal end of the body portion, an extension width of the encapsulation portion in a first direction being greater than an extension width of the encapsulation portion in a second direction, the first direction and the second direction both being perpendicular to the longitudinal axis, and an included angle being formed between the first direction and the second direction.

8. The hot nozzle assembly of claim 7, wherein the gel seal includes a connecting end connected to the body portion and a free end opposite the connecting end, the gel seal extending from the connecting end to the free end in a direction gradually closer to the longitudinal axis.

9. The nozzle assembly of claim 8, wherein the sealant portion includes a first peripheral portion extending from the connecting end and at an angle to the longitudinal axis and a second peripheral portion connected to the first peripheral portion and extending to the free end, the second peripheral portion being parallel to the longitudinal axis.

10. A hot-runner system, comprising a hot-nozzle assembly as claimed in any one of claims 7-9.