Sprue nozzle for interchanging cold runner and hot runner of rubber injection machine

Abstract

The utility model discloses a sprue nozzle for interchanging a cold runner and a hot runner of a rubber injection machine, which comprises an upper template and a nozzle component, and is characterized by further comprising a universal hot plate fixed with the upper template, a universal sprue mounting hole and a universal sprue fixed in the universal sprue mounting hole are arranged in the universal hot plate, and the nozzle component is arranged in the universal sprue mounting hole. The mold also comprises a hot runner kit or a cold runner kit; the hot runner kit comprises a hot nozzle which can be fixed and communicated with the universal sprue; the cold runner suite comprises a cold runner plate and a cold nozzle, a cold sprue mounting hole and a cold sprue fixed in the cold sprue mounting hole are formed in the cold runner plate, and the upper end of the cold nozzle is fixed and communicated with the universal sprue; the lower end of the cold nozzle is fixed and communicated with the cold sprue, and the cold runner plate can be fixed with the universal hot plate.

Description

Technical Field

[0001] The utility model relates to a mold, in particular to a gate nozzle for the interchange of cold runner and hot runner of a rubber injection machine. Background Art

[0002] Generally, injection molds usually select two injection methods of cold runner injection and hot runner injection according to the requirements of products and the fluidity of materials. Whether it is cold runner injection or hot runner injection, each has its own characteristic structure.

[0003] Cold runner injection includes a cold runner plate A fixed on the upper template, a common hot plate B fixed to the cold runner plate, and a nozzle assembly. A cold gate C matching the nozzle assembly is installed in the cold runner plate, and the mold plate is fixed to the cold runner hot plate through the common hot plate;

[0004] Hot runner injection includes a hot runner hot plate D fixed on the upper template, a nozzle assembly, and a hot gate E matching the nozzle assembly is installed in the hot runner hot plate, and the mold plate is fixed to the hot runner hot plate.

[0005] In the above structure, if we want to change the structure of hot runner injection to that of cold runner injection, we need to remove the hot runner hot plate and related accessories, and then replace them with a cold runner plate and a common hot plate; conversely, we need to remove the cold runner plate, the common hot plate and related accessories, and then replace them with the hot runner hot plate and related accessories. In the above, whether it is a cold runner plate or a hot runner hot plate, its weight is very heavy, and the disassembly and installation are both time-consuming and laborious.

[0006] Therefore, the applicant has designed a gate nozzle for the interchange of cold runner and hot runner of a rubber injection machine, which minimizes the disassembly and installation work during the interchange of cold and hot runners, thereby saving production time and reducing the labor intensity of operators. Content of the Utility Model

[0007] In order to overcome the deficiencies of the prior art, the utility model provides a gate nozzle for the interchange of cold runner and hot runner of a rubber injection machine.

[0008] The technical solution adopted by the utility model to solve its technical problems is:

[0009] A gate nozzle for the interchange of cold runner and hot runner of a rubber injection machine, comprising an upper template and a nozzle assembly, characterized in that: it further comprises a universal hot plate fixed to the upper template, a universal gate installation hole is provided in the universal hot plate and a universal gate fixed in the universal gate installation hole, and a hot runner kit or a cold runner kit is further included. The hot runner kit includes a hot nozzle capable of being fixed and communicated with the universal gate; the cold runner kit includes a cold runner plate and a cold nozzle. A cold gate installation hole is provided in the cold runner plate and a cold gate fixed in the cold gate installation hole. The upper end of the cold nozzle is fixed and communicated with the universal gate; the lower end of the cold nozzle is fixed and communicated with the cold gate, and the cold runner plate can be fixed to the universal hot plate.

[0010] A connecting disk is provided on the outer side wall of the universal gate, a ring-shaped boss is provided on the inner side wall of the universal gate installation hole, the connecting disk abuts against the ring-shaped boss and is fixed by screws, and the end of the universal gate is located in the inner hole of the ring-shaped boss.

[0011] The inner hole of the universal gate includes hole one, hole two and hole three which are arranged in sequence and communicated. The diameter of hole one is smaller than that of hole two, the diameter of hole two is smaller than that of hole three, and hole three is a threaded hole. A threaded connection part connected with hole three is provided on the hot nozzle. The end of the hot nozzle can abut against the step surface between hole one and hole two. The upper end is provided with a connection thread matched with hole three, and the end surface of the upper end can abut against the step surface.

[0012] The lower end is inserted into the inner hole of the cold gate and is in tight fit with it.

[0013] A positioning plate is provided on the side wall of the cold nozzle, and the upper end and the lower end are respectively located on both sides of the positioning plate.

[0014] An installation groove is provided on the outer surface of the lower end, and a sealing ring is provided in the installation groove. The sealing ring can be in sealed contact with the inner hole of the cold gate.

[0015] The beneficial effects of the present utility model are: the present utility model adopts a universal gate to replace the previous hot gate. The universal gate can not only be installed in cooperation with the hot nozzle to realize the function of the hot runner, but also can be installed in cooperation with the cold nozzle. At the same time, the cold nozzle can also be installed in cooperation with the cold gate, so as to realize the function of the cold runner.

[0016] When the above structure converts the hot runner to the cold runner, the universal hot plate does not need to be disassembled. Only the hot nozzle needs to be removed and then the cold runner kit is replaced to realize the function of the cold runner; when the cold runner is converted to the hot runner, only the cold runner kit needs to be removed and then the hot nozzle is replaced to realize the function of the hot runner. Therefore, when interchanging the hot and cold runners, the disassembly and installation work is minimized as much as possible, thereby saving production time and reducing the labor intensity of the operators. Description of the Drawings

[0017] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a sectional structural view when the present utility model realizes the cold runner function;

[0019] Figure 2 It is a sectional structural view when the present utility model realizes the hot runner function;

[0020] Figure 3 It is a structural view of a general hot plate;

[0021] Figure 4 It is a structural view of a cold runner plate;

[0022] Figure 5 It is a structural view of a general gate;

[0023] Figure 6 It is a structural view of a hot nozzle;

[0024] Figure 7 It is a structural view of a cold nozzle;

[0025] Figure 8 It is a structural view of a cold gate;

[0026] Figure 9 It is a sectional structural view of an old - structure cold runner;

[0027] Figure 10 It is a sectional structural view of an old - structure hot runner. Specific embodiments

[0028] The advantages, features, and implementation methods of the present disclosure will be clarified by the following embodiments described with reference to the accompanying drawings. However, the present disclosure can be embodied in different forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art. Furthermore, the present disclosure is only limited by the scope of the claims.

[0029] The shapes, sizes, proportions, angles, and numbers disclosed in the drawings used to describe the embodiments of the present disclosure are only examples, so the present disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, when the detailed description of related known functions or configurations is determined to unnecessarily obscure the focus of the present disclosure, that detailed description will be omitted. When using "including", "having", and "comprising" described in this specification, other components can be added unless "only" is used. Unless otherwise indicated, singular - form terms can include plural forms.

[0030] When interpreting an element, although not explicitly described, the element is understood to include an error range.

[0031] When describing a positional relationship, for example, when the positional relationship is described as "on...", "above...", "below...", and "adjacent to...", unless "immediately" or "directly" is used, one or more parts may be arranged between two other parts.

[0032] When describing a temporal relationship, for example, when the time sequence is described as "after...", "subsequently", "next", and "before...", unless "exactly" or "directly" is used, discontinuous cases may be included.

[0033] It should be understood that although terms such as "first" and "second" may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of the present disclosure.

[0034] As can be fully understood by those skilled in the art, the features of different embodiments of the present disclosure may be partially or fully coupled or combined with each other, and may cooperate with each other in various ways and be technically driven. The embodiments of the present disclosure may be executed independently of each other, or may be executed together in a mutually dependent relationship.

[0035] Referring to Figures 1 to 8 , the present utility model discloses a gate nozzle for the interchange of a cold runner and a hot runner of a rubber injection machine, including an upper template 1 and a nozzle assembly 2, and further including a universal hot plate 3 fixed to the upper template 1. A universal gate mounting hole 4 and a universal gate 5 fixed in the universal gate mounting hole 4 are provided in the universal hot plate 3. The nozzle assembly 2 is in close contact with and communicates with the top surface of the universal gate 5, so that rubber liquid can be injected into the universal gate 5. The structure of the nozzle assembly 2 is an existing structure, so it will not be specifically described in detail.

[0036] As shown in the figure, the mounting structure of the universal gate 5 is as follows: a connecting disk 6 is provided on the outer side wall of the universal gate 5, a ring-shaped boss 7 is provided on the inner side wall of the universal gate mounting hole 4, the connecting disk 6 abuts against the ring-shaped boss 7 and is fixed by screws, and the end of the universal gate 5 is located in the inner hole of the ring-shaped boss 7.

[0037] As shown in the figure, the inner hole of the universal gate 5 includes a hole one 8, a hole two 9, and a hole three 10 that are sequentially arranged and communicate with each other. The diameter of the hole one 8 is smaller than the diameter of the hole two 9, the diameter of the hole two 9 is smaller than the diameter of the hole three 10, and the hole three 10 is a threaded hole. A step surface is formed between the hole one 8 and the hole two 9.

[0038] When the present application realizes the function of the hot runner, a hot runner kit is adopted. The hot runner kit includes a hot nozzle 11 that can be fixed and communicated with the universal gate 5. The hot nozzle 11 is provided with a threaded connection portion 12 connected to the hole three 10. The end of the hot nozzle 11 can abut and be positioned against the step surface between the hole one 8 and the hole two 9. The inner hole of the hot nozzle 11 is communicated with the inner hole of the universal gate 5, and the bottom edge of the hot nozzle 11 is flush with the bottom surface of the universal hot plate 3. Thus, after the hot mold plate is fixedly connected to the universal hot plate 3, the hot nozzle 11 is communicated with the injection cavity in the hot mold plate to realize hot injection molding. The above structure is also convenient for disassembly and assembly. The hot mold plate is of a common structure, so it will not be specifically described in detail.

[0039] When the present application realizes the function of the cold runner, a cold runner kit is adopted. The cold runner kit includes a cold runner plate 13 and a cold nozzle 14. The cold runner plate 13 is provided with a cold gate installation hole 15 and a cold gate 16 fixed in the cold gate installation hole 15. The cold gate installation hole 15 is also of a common counterbore structure. The cold gate 16 is fixed in the cold gate installation hole 15 by screws and is communicated with the cold gate installation hole 15. The upper end of the cold nozzle 14 is fixed and communicated with the universal gate 5. Specifically, the upper end is provided with a connection thread that cooperates with the hole three 10, and the end surface of the upper end can abut and be positioned against the step surface. The above structure is convenient for disassembly and assembly. The lower end of the cold nozzle 14 is fixed and communicated with the cold gate 16. Specifically, after the cold nozzle 14 is fixedly connected to the universal gate 5, the cold runner plate 13 and the universal hot plate 3 are fixed by screws. At the same time, the lower end of the cold nozzle 14 can be inserted into the inner hole of the cold gate 16 and is in a tight fit with it. The above is a plug-in connection, so the installation and disassembly are very convenient. After the cold runner plate 13 is installed, an ordinary hot plate can be installed to install the cold mold plate. Thus, the cold nozzle 14 is communicated with the injection cavity in the cold mold plate to realize cold injection molding. Of course, when converting to the cold runner, the universal hot plate is not heated and only plays a role of intermediate connection between the cold runner plate 13 and the upper template. The cold mold plate is of a common structure, so it will not be specifically described in detail.

[0040] Of course, for heat preservation and insulation, there is a heat insulation plate 19 between the universal hot plate 3 and the upper template 1, and there is also a heat insulation plate 19 between the ordinary hot plate and the cold runner plate 13.

[0041] As shown in the figure, the side wall of the cold nozzle 14 is provided with a positioning plate 17. The upper end and the lower end are respectively located on both sides of the positioning plate 17. The positioning plate 17 can position when the cold runner plate 13 is plugged into the lower end. As a preferred structure, the outer surface of the lower end is provided with an installation groove 18, and a sealing ring is arranged in the installation groove 18. The sealing ring can be in sealed contact with the inner hole of the cold gate 16, so that better sealing performance can be achieved.

[0042] The above has introduced in detail a gate nozzle for the interchange of cold runners and hot runners of a rubber injection machine provided by the embodiments of the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A gate nozzle for interchange between cold runner and hot runner of a rubber injection machine, comprising an upper mold plate and a nozzle assembly, characterized in that: It also includes a universal hot plate fixed to the upper mold plate, wherein the universal hot plate is provided with a universal gate mounting hole and a universal gate fixed in the universal gate mounting hole, and also includes a hot runner kit or a cold runner kit, wherein the hot runner kit includes a hot nozzle that can be fixed and connected to the universal gate; the cold runner kit includes a cold runner plate and a cold nozzle, wherein the cold runner plate is provided with a cold gate mounting hole and a cold gate fixed in the cold gate mounting hole, the upper end of the cold nozzle is fixed and connected to the universal gate; the lower end of the cold nozzle is fixed and connected to the cold gate, and the cold runner plate can be fixed to the universal hot plate.

2. The gate nozzle for interchange between cold runner and hot runner of a rubber injection machine according to claim 1, characterized in that: A connecting plate is provided on the outer wall of the universal gate, an annular boss is provided on the inner wall of the universal gate mounting hole, the connecting plate abuts against the annular boss and is fixed by screws, and the end of the universal gate is located in the inner hole of the annular boss.

3. The gate nozzle for interchange between cold runner and hot runner of a rubber injection machine according to claim 1, characterized in that: The inner hole of the universal gate includes hole one, hole two and hole three which are arranged in sequence and connected. The diameter of hole one is smaller than the diameter of hole two, the diameter of hole two is smaller than the diameter of hole three, and hole three is a screw hole. The hot nozzle is provided with a threaded connection portion connected to hole three, and the end of the hot nozzle can be abutted against the step surface between hole one and hole two. The upper end is provided with a connecting thread matching hole three, and the end face of the upper end can be abutted against the step surface.

4. The gate nozzle for interchange between cold runner and hot runner of a rubber injection machine according to claim 3, characterized in that: The lower end is inserted into the inner hole of the cold gate and is tightly matched therewith.

5. The gate nozzle for interchange between cold runner and hot runner of a rubber injection machine according to claim 4, characterized in that: The side wall of the cold nozzle is provided with a positioning plate, and the upper end and the lower end are respectively located on both sides of the positioning plate.

6. The gate nozzle for interchange between cold runner and hot runner of a rubber injection machine according to claim 4, characterized in that: An installation groove is provided on the outer surface of the lower end, and a sealing ring is provided in the installation groove. The sealing ring can be in sealing contact with the inner hole of the cold gate.

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