Cold runner mold structure

Abstract

The utility model relates to the technical field of molds, and discloses a cold runner mold structure which comprises a shell, an injection assembly and a mold assembly are fixedly installed in the shell respectively, a needle valve is fixedly installed at the lower end of the injection assembly, a plurality of cooling water pipes are arranged on the outer wall of the shell, and a plurality of heating pipes are further arranged on the outer wall of the shell. The heat preservation assembly is fixedly installed on the outer wall of the shell, the heating pipe is arranged in an inner ring of the heat preservation assembly, and when the heat preservation device is used in winter, the first air hole and the third air hole are staggered from the second air hole and the fourth air hole, so that the whole heat preservation assembly is in a sealed state, and heat loss of the heating pipe can be reduced; when the heat preservation assembly is used in summer, the first air hole and the third air hole are aligned with the second air hole and the fourth air hole, so that the whole heat preservation assembly is communicated with the outside, heat dissipation of the heating pipe is facilitated in hot summer, and the temperature control effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a cold runner mold structure. Background Technology

[0002] Cold runner molds, a type of injection mold, work by molten plastic flowing through fixed channels inside the mold into the cavity, where it cools and solidifies to form the finished product. Cold runner molds are characterized by their simple structure and low manufacturing cost, making them widely used in various injection molding applications.

[0003] In current cold runner mold structures, heating pipes are needed to heat water during the injection molding process. The hot water flows through the mold to achieve temperature control. However, the heating pipes do not have insulation devices on their exterior, which is not only not conducive to heat preservation, but also easily leads to burns to people outside.

[0004] Therefore, we proposed a cold runner mold structure to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a cold runner mold structure to solve the problem mentioned in the background art that the heating tube does not have a heat preservation device on its outer surface, which is not only not conducive to heat preservation, but also easily leads to burns to people outside.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cold runner mold structure, including a shell, an injection assembly and a mold assembly are fixedly installed inside the shell, a needle valve is fixedly installed at the lower end of the injection assembly, a plurality of cooling water pipes are provided on the outer wall of the shell, a plurality of heating pipes are also provided on the outer wall of the shell, a heat preservation assembly is fixedly installed on the outer wall of the shell, and the heating pipes are arranged in the inner ring of the heat preservation assembly.

[0007] Preferably, the injection assembly includes an injection tube with an injection port at the upper end and a cylinder fitted onto the upper end of the injection tube.

[0008] Preferably, the mold assembly includes an upper mold and a lower mold, and the needle valve is disposed in the cavity formed by the upper mold and the lower mold.

[0009] Preferably, the heat insulation component includes a mounting bracket fixedly installed on the outer wall of the outer shell, and the mounting bracket is provided with a first temperature regulating component and a second temperature regulating component, and the first temperature regulating component and the second temperature regulating component can form a fastening relationship.

[0010] Preferably, the first temperature regulating component includes a first housing, on which a plurality of first vent holes are formed. A first indicator is fixedly installed on the outer side wall of the first housing. A pair of first arc-shaped grooves are formed on the side wall of the inner cavity of the first housing. A first sealing member is rotatably arranged inside the first housing. A first limiting strip is fixedly installed on the outer circumferential wall of the first sealing member and is slidably installed in the inner cavity of the first arc-shaped groove. A first pull rod is rotatably installed on the outer side wall of the first sealing member. A plurality of second vent holes are formed on the first sealing member. Two pairs of slots are formed on the side wall of the first housing facing the second temperature regulating component. A semi-circular locking block is movably arranged in the inner cavity of the slot. The semi-circular locking block and the side wall of the inner cavity of the slot are elastically connected by a spring.

[0011] Preferably, the second temperature control component includes a second housing, the second housing having a plurality of third vent holes, a second indicator fixedly installed on the side wall of the second housing, a pair of second arc-shaped grooves opened on the side wall of the inner cavity of the second housing, a second sealing member rotatably disposed inside the second housing, a pair of second limiting strips fixedly installed on the outer circumferential wall of the second sealing member, and the second limiting strips slidingly installed in the inner cavity of the second arc-shaped groove, a second pull rod rotatably installed on the outer side wall of the second sealing member, a plurality of fourth vent holes opened on the second sealing member, and a locking block one and a locking block two fixedly installed on the side walls of the second housing and the second sealing member facing the first housing, respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. When used in winter, the first and third vent holes are staggered with the second and fourth vent holes, which keeps the entire insulation component in a sealed state, reducing heat loss from the heating tube and improving the insulation effect. While maintaining the mold component at a suitable temperature, the power of the heating tube can be reduced, saving energy.

[0014] 2. When using in summer, it may be necessary to enhance the heat dissipation of the heating element, so that the first and third vent holes are aligned with the second and fourth vent holes. This will make the entire insulation component connected to the outside environment, which will help dissipate heat from the heating element in the hot summer and thus help achieve temperature control.

[0015] 3. This invention achieves quick disassembly, which helps to increase the replacement speed of the heating element and improves the efficiency of maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 This is a schematic diagram showing the installation position of the needle valve of this utility model;

[0019] Figure 4 for Figure 3 Enlarged view of point A;

[0020] Figure 5 This is a schematic diagram showing the installation position of the thermal insulation component of this utility model;

[0021] Figure 6 This is a disassembly diagram of the thermal insulation component of this utility model. Figure 1 ;

[0022] Figure 7 for Figure 6 Enlarged view of point B;

[0023] Figure 8 This is a disassembly diagram of the thermal insulation component of this utility model. Figure 2 ;

[0024] Figure 9 for Figure 8 Enlarged view of point C;

[0025] Figure 10 This is a disassembly diagram of the thermal insulation component of this utility model. Figure 3 ;

[0026] Figure 11 This is a disassembly diagram of the thermal insulation component of this utility model. Figure 4 .

[0027] In the diagram: 1. Outer shell; 2. Injection assembly; 21. Injection tube; 22. Glue inlet; 23. Cylinder; 3. Mold assembly; 31. Lower mold; 32. Upper mold; 4. Needle valve; 5. Cooling water pipe; 6. Heating pipe; 7. Insulation assembly; 71. Mounting bracket; 72. First temperature control assembly; 73. Second temperature control assembly; 721. First shell; 722. First vent; 723. First indicator; 724. First sealing element; 725. 726. First pull rod; 727. Slot; 728. Semicircular locking block; 729. Spring; 720. First arc-shaped groove; 721. Second vent hole; 732. First limiting strip; 733. Second housing; 734. Second indicator; 735. Second sealing element; 736. Second locking block one; 737. Second locking block two; 738. Second limiting strip; 739. Fourth vent hole; 740. Second arc-shaped groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1: Please refer to Figures 1-11 The cold runner mold structure includes an outer shell 1. An injection assembly 2 and a mold assembly 3 are fixedly installed inside the outer shell 1. A needle valve 4 is fixedly installed at the lower end of the injection assembly 2. Several cooling water pipes 5 are provided on the outer wall of the outer shell 1. Several heating pipes 6 are also provided on the outer wall of the outer shell 1. A heat preservation assembly 7 is fixedly installed on the outer wall of the outer shell 1, and the heating pipes 6 are located in the inner ring of the heat preservation assembly 7.

[0030] The injection assembly 2 includes an injection tube 21, with a glue inlet 22 at the upper end of the injection tube 21. A cylinder 23 is also fitted onto the upper end of the injection tube 21. The material enters the interior of the injection tube 21 through the glue inlet 22 and finally enters the interior of the mold assembly 3 for cooling and molding. The cylinder 23 is used to adjust the material flow rate.

[0031] The mold assembly 3 includes an upper mold 32 and a lower mold 31, and the needle valve 4 is disposed in the cavity formed by the upper mold 32 and the lower mold 31.

[0032] The thermal insulation component 7 includes a mounting bracket 71 fixedly installed on the outer side wall of the outer casing 1. The mounting bracket 71 is provided with a first temperature regulating component 72 and a second temperature regulating component 73, and the first temperature regulating component 72 and the second temperature regulating component 73 can form a fastening relationship.

[0033] The first temperature regulating component 72 includes a first housing 721, on which a plurality of first vent holes 722 are formed. A first indicator 723 is fixedly installed on the outer side wall of the first housing 721. A pair of first arc-shaped grooves 729 are formed on the side wall of the inner cavity of the first housing 721. A first sealing member 724 is rotatably disposed inside the first housing 721. A first limiting strip 730 is fixedly installed on the outer circumferential wall of the first sealing member 724, and the first limiting strip 730 slides. The first sealing component 724 is rotatably installed in the inner cavity of the first arc-shaped groove 729. A first pull rod 725 is rotatably installed on the outer wall of the first sealing component 724. Several second vent holes 720 are opened on the first sealing component 724. Two pairs of slots 726 are opened on the side wall of the first housing 721 facing the second temperature regulating component 73. A semi-circular block 727 is movably arranged in the inner cavity of the slot 726. The semi-circular block 727 and the side wall of the inner cavity of the slot 726 are elastically connected by a spring 728.

[0034] The second temperature control component 73 includes a second housing 731, which has several third vent holes 732. A second indicator 733 is fixedly installed on the side wall of the second housing 731. A pair of second arc-shaped grooves 740 are opened on the side wall of the inner cavity of the second housing 731. A second sealing member 734 is rotatably installed inside the second housing 731. A pair of second limiting strips 738 are fixedly installed on the outer circumference of the second sealing member 734 and are slidably installed in the inner cavity of the second arc-shaped grooves 740. A second pull rod 735 is rotatably installed on the outer side wall of the second sealing member 734. A number of fourth vent holes 739 are opened on the second sealing member 734. A locking block 1 736 and a locking block 2 737 are fixedly installed on the side walls of the second housing 731 and the second sealing member 734 facing the first housing 721, respectively.

[0035] In this embodiment: First, the first temperature control component 72 is installed on the mounting bracket 71. Then, the second temperature control component 73 is fastened onto the first temperature control component 72. During the fastening process, the locking block 736 is inserted into the inner cavity of the slot 726. As the locking block 736 is inserted, it pushes the semi-circular locking block 727 towards the spring 728, compressing the spring 728. When the locking hole on the locking block 736 aligns with the semi-circular locking block 727, the elastic force of the spring 728... When the semi-circular locking block 727 is engaged in the locking hole on the locking block 736, since the first sealing member 724 is also provided with a locking groove 726, a semi-circular locking block 727 and a spring 728, when the first housing 721 and the second housing 731 are engaged, at the same time, the locking block 737 will engage with the first sealing member 724 in the same way, thus realizing the engagement between the first sealing member 724 and the second sealing member 734, thereby making the first sealing member 724 and the second sealing member 734 into a whole.

[0036] When used in winter, the operator rotates the first sealing member 724 and the second sealing member 734 by using the first pull rod 725 and the second pull rod 735, so that the first vent 722 and the third vent 732 are misaligned with the second vent 720 and the fourth vent 739. This keeps the entire heat preservation component 7 in a sealed state. When the heating tube 6 heats the water, the heat loss of the heating tube 6 is reduced because the heat preservation component 7 is in a sealed state, which is conducive to achieving the heat preservation effect. Under the premise of maintaining the mold component 3 at a suitable temperature, the power of the heating tube 6 can be reduced, saving energy.

[0037] When used in summer, it may be necessary to enhance the heat dissipation of the heating element 6. At this time, the operator rotates the first sealing part 724 and the second sealing part 734 through the first pull rod 725 and the second pull rod 735, so that the first vent 722 and the third vent 732 are aligned with the second vent 720 and the fourth vent 739. This makes the entire heat preservation component 7 connected to the outside world, which is conducive to heat dissipation of the heating element 6 in the hot summer, and thus helps to achieve temperature control.

[0038] Example 2: This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figures 5-11 When the heating element 6 is damaged and needs repair, the operator rotates the first sealing member 724 and the second sealing member 734 using the first pull rod 725 and the second pull rod 735, aligning the first pull rod 725 and the second pull rod 735 with the first indicator 723 and the second indicator 733. The operator then applies an upward pulling force to the second temperature control component 73. Under the action of the pulling force, the semi-circular locking block 727 will fall out of the locking hole on the locking block 736, thereby separating the first housing 721 and the second housing 731. At the same time as the separation between the first housing 721 and the second housing 731, the first sealing member 724 and the second sealing member 734 are separated in the same way, thereby achieving complete separation between the second temperature control component 73 and the first temperature control component 72. This achieves a quick disassembly effect, which helps to improve the replacement speed of the heating element 6 and improves the efficiency of maintenance.

[0039] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cold runner mold structure, including a shell (1), characterized in that: An injection assembly (2) and a mold assembly (3) are fixedly installed inside the outer shell (1). A needle valve (4) is fixedly installed at the lower end of the injection assembly (2). Several cooling water pipes (5) are provided on the outer wall of the outer shell (1). Several heating pipes (6) are also provided on the outer wall of the outer shell (1). A heat preservation assembly (7) is fixedly installed on the outer wall of the outer shell (1), and the heating pipes (6) are located in the inner ring of the heat preservation assembly (7).

2. The cold runner mold structure according to claim 1, characterized in that: The injection assembly (2) includes an injection tube (21), with an injection port (22) at the upper end of the injection tube (21), and a cylinder (23) is also fitted onto the upper end of the injection tube (21).

3. The cold runner mold structure according to claim 2, characterized in that: The mold assembly (3) includes an upper mold (32) and a lower mold (31), and a needle valve (4) is disposed in the cavity formed by the upper mold (32) and the lower mold (31).

4. The cold runner mold structure according to claim 3, characterized in that: The heat insulation component (7) includes a mounting bracket (71) fixedly installed on the outer wall of the outer shell (1). The mounting bracket (71) is provided with a first temperature regulating component (72) and a second temperature regulating component (73), and the first temperature regulating component (72) and the second temperature regulating component (73) can form a fastening relationship.

5. The cold runner mold structure according to claim 4, characterized in that: The first temperature regulating component (72) includes a first housing (721), on which a plurality of first vent holes (722) are provided. A first indicator (723) is fixedly installed on the outer side wall of the first housing (721). A pair of first arc-shaped grooves (729) are provided on the side wall of the inner cavity of the first housing (721). A first sealing member (724) is rotatably provided inside the first housing (721). A first limiting strip (730) is fixedly installed on the outer circumferential wall of the first sealing member (724). The first sealing member (724) is slidably installed in the inner cavity of the first arc-shaped groove (729). The first pull rod (725) is rotatably installed on the outer wall of the first sealing member (724). Several second vent holes (720) are opened on the first sealing member (724). Two pairs of slots (726) are opened on the side wall of the first housing (721) facing the second temperature regulating component (73). A semi-circular block (727) is movably arranged in the inner cavity of the slot (726). The semi-circular block (727) and the side wall of the inner cavity of the slot (726) are elastically connected by a spring (728).

6. The cold runner mold structure according to claim 5, characterized in that: The second temperature control assembly (73) includes a second housing (731), which has several third vent holes (732). A second indicator (733) is fixedly installed on the side wall of the second housing (731). A pair of second arc-shaped grooves (740) are provided on the side wall of the inner cavity of the second housing (731). A second sealing member (734) is rotatably disposed inside the second housing (731). A pair of... The second limiting strip (738) is slidably installed in the inner cavity of the second arc groove (740). The second pull rod (735) is rotatably installed on the outer side wall of the second sealing member (734). Several fourth vent holes (739) are opened on the second sealing member (734). The second housing (731) and the second sealing member (734) are respectively fixedly installed on the side wall facing the first housing (721) with a first locking block (736) and a second locking block (737).

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