A blown film mold for a biodegradable heat shrinkable film

Abstract

This utility model provides a blown film mold for biodegradable heat shrink film, relating to the technical field of blown film molds for biodegradable heat shrink film. It includes a heating mechanism comprising a mold body, an outer cover fitted onto the outer surface of the mold body, the outer cover being fixedly connected to the mold body, a heating coil fitted onto the outer surface of the mold body, a hollow cavity inside the outer cover, and a connecting pipe (first and second) fixedly connected to one end of the heating coil. This utility model, by setting up a heating mechanism, enables the blown film mold for biodegradable heat shrink film to achieve a more ideal heating effect during use, ensuring that the raw material liquid flowing inside the mold body does not condense, thereby improving the production quality of the biodegradable heat shrink film.

Description

Technical Field

[0001] This utility model relates to the field of blown film mold technology for biodegradable heat shrink film, and in particular to a blown film mold for biodegradable heat shrink film. Background Technology

[0002] A blown film die for heat shrink film is a die head of a blown film machine specifically designed for producing heat shrink film. It uses a blow molding process to extrude molten plastic into a tubular film, which is then cooled, stretched, and wound up to ultimately produce a film with heat-shrinkable properties.

[0003] Existing blown film molds for heat shrink film have a cavity inside for the flow of heat shrink film raw materials. During use, the outer surface of the blown film mold is equipped with a heating coil, which uses the heating coil to deliver heating liquid to heat the blown film mold. However, due to the gap between the heating coil and the blown film mold, and the fact that a large amount of heat in the heating coil can easily dissipate to the outside, the heating effect on the blown film mold is not ideal. Therefore, we provide a blown film mold for biodegradable heat shrink film. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing blow molding dies in terms of insufficient heating effect on heating components, and to provide a blow molding die for biodegradable heat shrinkable film.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a blown film mold for biodegradable heat shrink film, comprising: a heating mechanism, the heating mechanism comprising a mold body, an outer cover fitted onto the outer surface of the mold body, the outer cover being fixedly connected to the mold body, a heating coil fitted onto the outer surface of the mold body, a hollow cavity being formed inside the outer cover, a connecting pipe one being fixedly connected to one end of the heating coil, and a connecting pipe two being fixedly connected to one end of the heating coil.

[0006] In a preferred embodiment, both connecting pipe one and connecting pipe two are sleeved inside the outer cover, and both connecting pipe one and connecting pipe two are fixedly connected to the outer cover.

[0007] In a preferred embodiment, an infusion tube is fitted inside the outer cover and is fixedly connected to the outer cover; an infusion tube is fitted inside the outer cover and is fixedly connected to the outer cover.

[0008] In a preferred embodiment, one end of both the first connecting pipe and the second connecting pipe is provided with a connecting mechanism, the connecting mechanism including a nut.

[0009] In a preferred embodiment, the nut is sleeved on the outer surface of connecting pipe one and connecting pipe two, and the nut is fixedly connected to connecting pipe one and connecting pipe two.

[0010] In a preferred embodiment, a threaded tube is fitted inside the nut, and the threaded tube is threadedly connected to the nut.

[0011] In a preferred embodiment, a hexagonal block is fitted onto the outer surface of the threaded tube, and the hexagonal block is fixedly connected to the threaded tube.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] This invention, by incorporating a heating mechanism, enables the blown film mold for biodegradable heat shrink film to achieve a more ideal heating effect during use, ensuring that the raw material liquid flowing within the mold body does not condense, thereby improving the production quality of the biodegradable heat shrink film. An outer cover with a hollow cavity inside allows for the circulation of heating liquid within the cover. This cover also prevents heat from escaping from the heating coil, and the heat radiated from the cover to the heating coil better complements the heating of the mold body, resulting in more uniform heating and compensating for any deficiencies in the heating coil's heating function. Furthermore, a connecting mechanism allows external pipes supplying the heating liquid to work with either connecting pipe one or connecting pipe two, enabling the heating liquid to circulate within the heating coil. Attached Figure Description

[0014] Figure 1 A perspective view of a blown film mold for a biodegradable heat shrinkable film provided by this utility model.

[0015] Figure 2 A disassembled schematic diagram of a blown film mold for a biodegradable heat shrinkable film provided by this utility model.

[0016] Figure 3 A sectional perspective view of the outer cover of a blown film mold for a biodegradable heat shrinkable film provided by this utility model.

[0017] Figure 4 A schematic diagram of the nut installation of a blown film mold for a biodegradable heat shrinkable film provided by this utility model.

[0018] Legend:

[0019] 1. Heating mechanism; 2. Connecting mechanism; 11. Mold body; 12. Outer cover; 13. Heating coil; 14. Hollow cavity; 15. Connecting pipe one; 16. Connecting pipe two; 17. Infusion pipe one; 18. Infusion pipe two;

[0020] 21. Nut; 22. Threaded pipe; 23. Hexagonal block. Detailed Implementation

[0021] 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.

[0022] Example 1

[0023] like Figures 1-4 As shown, this utility model provides a technical solution: a blown film mold for biodegradable heat shrinkable film, comprising: a heating mechanism 1, the heating mechanism 1 including a mold body 11, an outer cover 12 sleeved on the outer surface of the mold body 11, the outer cover 12 being fixedly connected to the mold body 11, a heating coil 13 sleeved on the outer surface of the mold body 11, a hollow cavity 14 opened inside the outer cover 12, a connecting pipe 15 fixedly connected to one end of the heating coil 13, a connecting pipe 2 16 fixedly connected to one end of the heating coil 13, both connecting pipe 15 and connecting pipe 2 16 being sleeved inside the outer cover 12, both connecting pipe 15 and connecting pipe 2 16 being fixedly connected to the outer cover 12, an infusion pipe 17 sleeved inside the outer cover 12, the infusion pipe 17 being fixedly connected to the outer cover 12, and an infusion pipe 2 18 sleeved inside the outer cover 12, the infusion pipe 2 18 being fixedly connected to the outer cover 12.

[0024] In this embodiment, a heating coil 13 is provided, which can be sleeved on the outer surface of the mold body 11 and in contact with the outer surface of the mold body 11. The circulating heating liquid within the heating coil 13 heats the mold body 11, raising its temperature. This allows the mold body 11 to maintain the fluidity of the shrink film material inside. An outer cover 12 is provided, with a hollow cavity 14 inside, allowing the heating liquid to circulate within it. The outer cover 12 works in conjunction with the heating coil 13 to maintain... The mold body 11 is heated to the required temperature during use. The outer cover 12 can enclose the heating coil 13, thus preventing the heat emitted by the heating coil 13 from escaping to the outside. This allows for more efficient heating of the mold body 11. Connecting pipe 15 and connecting pipe 2 16 are provided to allow the heating liquid to circulate inside the heating coil 13. Infusion pipe 17 and infusion pipe 2 18 are provided to allow the heating liquid inside the outer cover 12 to circulate normally. The inner wall of the mold body 11 is coated with Teflon to prevent the shrink film material from sticking together during its internal transport.

[0025] Example 2

[0026] like Figures 1-4As shown, one end of connecting pipe 15 and connecting pipe 2 is provided with a connecting mechanism 2. The connecting mechanism 2 includes a nut 21, which is sleeved on the outer surface of connecting pipe 15 and connecting pipe 2 16 and is fixedly connected to connecting pipe 15 and connecting pipe 2 16. A threaded pipe 22 is sleeved inside the nut 21 and is threadedly connected to the nut 21. A hexagonal block 23 is sleeved on the outer surface of the threaded pipe 22 and is fixedly connected to the threaded pipe 22.

[0027] In this embodiment, by setting a connecting mechanism 2, the pipeline for conveying heating liquid can be used in conjunction with connecting pipe 15 and connecting pipe 26. A nut 21 is provided and fixedly connected to the outer surface of connecting pipe 15 and connecting pipe 26. Therefore, the threaded pipe 22 can be connected to connecting pipe 15 and connecting pipe 26 through the nut 21. At the same time, both ends of the threaded pipe 22 are threaded, so the threaded pipe 22 can start the connection function, so that after the pipeline for conveying heating liquid is threadedly connected to the threaded pipe 22, it can be in a communication state with connecting pipe 15 and connecting pipe 26.

[0028] Working principle:

[0029] like Figures 1-4 As shown, when using this utility model, the connecting mechanism 2 can first be connected to the connecting pipe 15 and the connecting pipe 26. At this time, the threaded pipe 22 is threadedly connected to the nut 21. Then, the hexagonal block 23 is rotated using an auxiliary tool until the threaded pipe 22 and the nut 21 are tightly connected. After that, the pipe for supplying the heating liquid from the outside is threadedly connected to the threaded pipe 22 until the heating liquid can be supplied to the heating coil 13. At this time, the different pipes for supplying the heating liquid from the outside are connected to the infusion pipe 17 and the infusion pipe 28 through a specific connection method, so that the hollow cavity 14 opened inside the outer cover 12 can circulate the heating liquid. At this time, if the mold body 11 needs to be heated, the heating liquid can be circulated in the outer cover 12 and the heating coil 13. With the cooperation of the outer cover 12 and the heating coil 13, the heating of the mold body 11 can be maintained continuously and effectively, so that the shrink film material flowing in the mold body 11 can be kept in a normal state.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A blown film mold for a biodegradable heat-shrinkable film, characterized in that, include: Heating mechanism (1), the heating mechanism (1) includes a mold body (11), an outer cover (12) is fitted on the outer surface of the mold body (11), the outer cover (12) is fixedly connected to the mold body (11), a heating coil (13) is fitted on the outer surface of the mold body (11), a hollow cavity (14) is opened inside the outer cover (12), a connecting pipe one (15) is fixedly connected to one end of the heating coil (13), and a connecting pipe two (16) is fixedly connected to one end of the heating coil (13).

2. The blown film mold for a biodegradable heat-shrinkable film according to claim 1, characterized in that: Both the first connecting pipe (15) and the second connecting pipe (16) are fitted inside the outer cover (12), and both the first connecting pipe (15) and the second connecting pipe (16) are fixedly connected to the outer cover (12).

3. The blown film mold for a biodegradable heat-shrinkable film according to claim 2, characterized in that: An infusion tube (17) is fitted inside the outer cover (12), and the infusion tube (17) is fixedly connected to the outer cover (12). An infusion tube (18) is fitted inside the outer cover (12), and the infusion tube (18) is fixedly connected to the outer cover (12).

4. The blown film mold for a biodegradable heat-shrinkable film according to claim 1, characterized in that: One end of each of the first connecting pipe (15) and the second connecting pipe (16) is provided with a connecting mechanism (2), and the connecting mechanism (2) includes a nut (21).

5. The blown film mold for a biodegradable heat-shrinkable film according to claim 4, characterized in that: The nut (21) is sleeved on the outer surface of connecting pipe one (15) and connecting pipe two (16), and the nut (21) is fixedly connected to connecting pipe one (15) and connecting pipe two (16).

6. The blown film mold for a biodegradable heat-shrinkable film according to claim 5, characterized in that: The nut (21) has a threaded tube (22) inside it, and the threaded tube (22) is threadedly connected to the nut (21).

7. The blown film mold for a biodegradable heat-shrinkable film according to claim 6, characterized in that: A hexagonal block (23) is fitted onto the outer surface of the threaded tube (22), and the hexagonal block (23) is fixedly connected to the threaded tube (22).

Images