CN208020650U - Hot Nozzle Valve Needle Cover - Google Patents

Abstract

The utility model discloses a hot nozzle valve needle sleeve, which is arranged on a flow distribution plate and comprises a sleeve body and a valve needle; the sleeve body comprises a main body part and a convex part which are integrally formed and connected, wherein the convex part integrally extends upwards from the surface of the main body part, and a valve needle hole is formed on the surface of the convex part and the bottom surface of the main body part in a penetrating manner. Through being provided with annular groove to the internal diameter of cooperation upper segment hole is greater than the internal diameter of hypomere hole, and the outer wall of needle and the inner wall laminating of hypomere hole make the utility model discloses structural design is ingenious, reasonable, can prevent effectively that the needle from appearing card needle phenomenon when the material has glass fibre, not only guarantees to penetrate the normal work of chewing, effectively avoids leading to the sizing material to block up because of card needle and penetrates the phenomenon of chewing in addition, and stability is high, and then improves work efficiency, is equipped with the convex part moreover, has simplified the dismouting process greatly, makes things convenient for routine maintenance, labour saving and time saving, in addition, the utility model has the advantages of simple overall structure, compactness, easily realize, with low costs, do benefit to extensive popularization and.

Description

Hot Nozzle Valve Needle Cover

technical field

The utility model relates to the technology in the field of injection mold accessories, in particular to a hot nozzle valve needle sleeve.

Background technique

The hot nozzle valve needle sleeve is usually set on the injection mold to control the flow of molten rubber, and it mainly includes a sleeve body and a valve needle. Due to the unreasonable design of the sleeve body and the valve needle structure of the current hot nozzle valve needle sleeve, the valve needle may be stuck when the material is made of glass fiber, which not only affects the normal operation of the nozzle, but also causes rubber blockage due to the stuck needle. The emergence of the nozzle phenomenon, the stability is low.

Contents of the invention

In view of this, the utility model aims at the deficiencies of the existing technology, and its main purpose is to provide a hot nozzle valve needle cover, which can effectively solve the problem that the existing hot nozzle valve needle cover is easily stuck due to the unreasonable structure design. The needle phenomenon.

In order to achieve the above object, the utility model adopts the following technical solutions:

A hot nozzle valve needle sleeve, which is arranged on a diverter plate, includes a sleeve body and a valve needle; the sleeve body includes a main body and a convex portion integrally formed and connected, and the convex portion extends upward integrally from the surface of the main body. The surface of the convex part and the bottom surface of the main body are penetrated to form a valve needle hole. The valve needle hole is formed by connecting the inner hole of the upper section and the inner hole of the lower section. There is an annular groove in the concave position, and the two sides of the annular groove form a convex ring; the valve needle is inserted into the valve needle hole, the outer wall of the valve needle is attached to the inner wall of the inner hole of the lower section, and the inner end of the valve needle extends into the center of the diverter plate. In the flow passage, the outer end of the valve needle is exposed above the sleeve body.

Preferably, there is a graphite ring in the casing, the graphite ring is inlaid in the casing, and the inner wall of the graphite ring is attached to the outer wall of the valve needle.

Preferably, the outer peripheral side of the convex part is provided with a thread threadedly connected with the fixed cover, and the surface of the splitter plate is provided with a fixing hole for fixing the fixed cover.

Preferably, the cross section of the annular groove is an isosceles trapezoidal structure.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be known from the above technical solutions:

By providing an annular groove and coordinating that the inner diameter of the inner hole of the upper section is greater than the inner diameter of the inner hole of the lower section, the outer wall of the valve needle is attached to the inner wall of the inner hole of the lower section, so that the structure design of the utility model is ingenious and reasonable, and can effectively prevent the valve needle from When the material is made of glass fiber, needle jamming occurs, which not only ensures the normal operation of the nozzle, but also effectively avoids the phenomenon of rubber blocking the nozzle due to needle jamming. The stability is high, thereby improving work efficiency, and there is a convex part, which greatly simplifies The assembly and disassembly process is simplified, which is convenient for daily maintenance and saves time and effort. In addition, the overall structure of the utility model is simple and compact, easy to realize, and low in cost, which is conducive to wide application.

In order to illustrate the structural features and functions of the utility model more clearly, the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a schematic cross-sectional view of a preferred embodiment of the present invention.

Description of the accompanying drawings.

10. Sleeve 11. Main body

12. Convex part 13. Graphite ring

101. Valve needle hole 1011. Upper inner hole

1012, lower section inner hole 102, annular groove

103, protruding ring 104, thread

20. Valve needle 30. Manifold plate

31. Fixing hole 32. Runner

33, embedding groove.

Detailed ways

Please refer to FIG. 1 , which shows the specific structure of a preferred embodiment of the present invention, which is arranged on a diverter plate 30 and includes a sleeve body 10 and a valve needle 20 .

The sleeve 10 includes a body part 11 and a convex part 12 which are integrally formed and connected. The convex part 12 extends upwards from the surface of the body part 11 integrally. The surface of the convex part 12 and the bottom surface of the body part 11 penetrate to form a valve needle hole 101. The needle hole 101 is formed by connecting the upper inner hole 1011 and the lower inner hole 1012, the inner diameter of the upper inner hole 1011 is larger than the inner diameter of the lower inner hole 1012, and the center of the outer peripheral side of the main body 11 is provided with an annular groove 102, Both sides of the annular groove 102 form a convex ring 103; in this embodiment, the main body 11 and the convex portion 12 are cylindrical, and the outer peripheral side of the convex portion 12 is provided with a fixed cover (not shown in the figure) Threads 104 are screwed together, and the surface of the diverter plate 30 is provided with a fixing hole 31 for fixing the cover, and the cross section of the annular groove 102 is an isosceles trapezoidal structure.

The valve needle 20 is inserted into the valve needle hole 101, the outer wall of the valve needle 20 is attached to the inner wall of the lower inner hole 1012, the inner end of the valve needle 20 extends into the flow channel 32 of the diverter plate 30, and the outer end of the valve needle 20 is exposed. The top of the casing 10.

And, there is a graphite ring 13 inside the casing 10 , the graphite ring 13 is embedded in the casing 10 , and the inner wall of the graphite ring 13 is attached to the outer wall of the valve needle 20 to achieve better wear resistance.

The method of use of this embodiment is described in detail as follows:

When in use, the sleeve body 10 is embedded in the embedding groove 33 of the diverter plate 30, the outer peripheral side of the convex ring 103 of the sleeve body 10 fits the embedding groove 33, and the sleeve body 10 is fixed on the diverter plate 30 through the fixed cover. Next, insert the valve needle 20 into the valve needle hole 101, and adjust the depth of inserting the inner end of the valve needle 20 into the flow channel 32 of the diverter plate 30 as required, so as to control the flow of molten rubber.

The key points of the design of the utility model are: by providing an annular groove, and coordinating that the inner diameter of the inner hole of the upper section is larger than the inner diameter of the inner hole of the lower section, the outer wall of the valve needle is attached to the inner wall of the inner hole of the lower section, so that the structural design of the utility model is ingenious, Reasonable, it can effectively prevent the valve needle from being stuck when the material has glass fiber, not only to ensure the normal operation of the nozzle, but also to effectively avoid the phenomenon of glue blocking the nozzle due to the stuck needle, high stability, and thus improve work efficiency. Moreover, the protrusion is provided, which greatly simplifies the assembly and disassembly process, facilitates daily maintenance, and saves time and effort. In addition, the overall structure of the utility model is simple and compact, easy to realize, low in cost, and conducive to wide application.

The technical principles of the present utility model have been described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the utility model, and cannot be construed as limiting the protection scope of the utility model in any way. Based on the explanations herein, those skilled in the art can think of other specific implementations of the present utility model without creative work, and these forms will all fall within the protection scope of the present utility model.

Claims (4)

1. a kind of hot nozzle valve needle cover, is set on flow distribution plate, it is characterised in that：Include body and needle；The body packet Include be integrally formed connection main part and protrusion, protrusion integrally extended upward in the surface of main part, the surface of protrusion and The bottom surface of main part is formed through needle hole, which, which is connected by epimere endoporus with hypomere endoporus, forms, epimere endoporus Internal diameter is more than the internal diameter of hypomere endoporus, and the circumferential lateral surface center of main part is recessed with annular groove, and the two of annular groove Side forms bulge loop；The needle is inserted into needle hole, and the outer wall of needle is bonded with the inner wall of hypomere endoporus, and the inner end of needle is stretched into point In the runner of flowing plate, the top of body is exposed in the outer end of needle.

2. hot nozzle valve needle cover as described in claim 1, it is characterised in that：The set has graphite annulus, graphite annulus edge in vivo The embedding set that is molded over is internal, and the inner wall of the graphite annulus is bonded with the outer wall of needle.

3. hot nozzle valve needle cover as described in claim 1, it is characterised in that：The circumferential lateral surface of the protrusion is provided with and fixed cover The thread being screwed together, the surface of the flow distribution plate are provided with the mounting hole for fixing fixed cover.

4. hot nozzle valve needle cover as described in claim 1, it is characterised in that：The cross section of the annular groove is in isosceles trapezoid knot Structure.