Adjustable partition heating device of plastic air pressure thermoforming machine

Abstract

The utility model relates to the technical field of plastic pneumatic thermoforming machine, proposes an adjustable partition heating device of plastic pneumatic thermoforming machine, including heating box and heating assembly in its inside. Heating assembly is constituted by control platform and heating part, and the control platform bottom is equipped with the heat insulation baffle, and the heating area is divided into multiple independent units, and each unit is equipped with the heating part driven by electric control telescopic link, including connecting shell, heating plate and temperature regulator, can realize each area heating height and temperature's independent accurate control, the device can be different to the product different parts's forming demand and exert different heating through the partition control, effectively solved the edge insufficient stretching and the center overheating deformation etc.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic pneumatic thermoforming machines, and more specifically, to an adjustable zone heating device for a plastic pneumatic thermoforming machine. Background Technology

[0002] Plastic pneumatic thermoforming technology is widely used in food packaging, daily necessities, medical devices, and other fields, especially in the production of products such as takeout containers and container lids. Traditional pneumatic thermoforming machines usually use an integral heating method, that is, the entire plastic sheet is heated evenly and then formed by air pressure. However, in the actual production process, due to the differences in product structure, for example, the central area of ​​takeout lids is relatively flat, while the edge or corner areas need to be deeply stretched to form structures such as buckles and sealing rings. Even heating the entire sheet can easily lead to overheating and excessive softening in the central area, causing the material to sag, become too thin in some areas, or even crack during molding; while the edge areas may not be heated enough, resulting in insufficient stretching, incomplete molding, or reduced sealing performance.

[0003] In view of this, the present invention proposes an adjustable zone heating device for a plastic pneumatic thermoforming machine. Utility Model Content

[0004] To overcome the aforementioned deficiencies of the prior art, this utility model provides an adjustable zone heating device for a plastic pneumatic thermoforming machine. This addresses the issue that the central area of ​​the takeout lid is relatively flat, while the edge or corner areas require deep stretching to form structures such as buckles and sealing rings. Uniform heating can easily lead to overheating and excessive softening in the central area, causing material sagging, local thinning, or even cracking during molding. Meanwhile, insufficient heating in the edge areas can result in inadequate stretching, incomplete molding, or reduced sealing performance.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an adjustable zone heating device for a plastic pneumatic thermoforming machine, comprising:

[0006] Heating box;

[0007] The heating assembly includes a control console and a heating component. The control console is fixedly installed inside the heating chamber, and the heating component is installed inside the control console. The heating of materials is achieved through the cooperation between the control console and the heating component.

[0008] Preferably, a partition plate is fixedly connected to the bottom of the console to divide the bottom area of ​​the console into multiple areas.

[0009] Preferably, the heating component includes an electrically controlled telescopic rod, a connecting housing, a heating plate, and a temperature regulator. The electrically controlled telescopic rod is fixedly connected to the bottom of the control console and is respectively arranged in multiple areas separated by the partition plate. The connecting housing is fixedly connected to the output end of the electrically controlled telescopic rod. The heating plate is fixedly connected to the bottom of the connecting housing. The temperature regulator is fixedly installed on the top of the heating plate and is located inside the connecting housing.

[0010] Preferably, the spacer is made of thermal insulation material.

[0011] Preferably, the electrically controlled telescopic rods are configured to be controlled separately by the same system.

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

[0013] This invention features multiple independent heating zones separated by partitions, each equipped with an independently controllable heating component. Combined with an electrically controlled telescopic rod and a temperature regulator, it achieves precise control over the heating position and temperature of different zones. This structure allows for differentiated heating to meet the molding requirements of different parts of the product, effectively avoiding problems such as insufficient edge stretching or central overheating and deformation caused by overall heating. This significantly improves molding quality and product qualification rate. Furthermore, the device has a reasonable structure, flexible control, and is suitable for the heating needs of products with different shapes, exhibiting good adaptability and energy-saving effects. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the heating component structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the heating component structure of this utility model.

[0017] [Figure Labels]

[0018] 1. Heating box; 2. Heating assembly; 21. Control console; 211. Partition plate; 22. Heating component; 221. Electrically controlled telescopic rod; 222. Connecting shell; 223. Heating plate; 224. Temperature regulator. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0020] Example

[0021] Please see Figure 1 , Figure 2 as well as Figure 3 The adjustable zone heating device of the plastic pneumatic thermoforming machine includes: a heating box 1; a heating component 2, which includes a control console 21 and a heating element 22. The control console 21 is fixedly installed inside the heating box 1, and the heating element 22 is installed inside the control console 21. The heating of the material is achieved through the cooperation of the control console 21 and the heating element 22.

[0022] Specifically, the heating component 22 includes an electrically controlled telescopic rod 221, a connecting housing 222, a heating plate 223, and a temperature regulator 224. The electrically controlled telescopic rod 221 is fixedly connected to the bottom of the control console 21 and is respectively set in multiple areas separated by the partition plate 211. The connecting housing 222 is fixedly connected to the output end of the electrically controlled telescopic rod 221. The heating plate 223 is fixedly connected to the bottom of the connecting housing 222. The temperature regulator 224 is fixedly installed on the top of the heating plate 223 and is located inside the connecting housing 222.

[0023] Furthermore, a partition plate 211 is fixedly connected to the bottom of the control console 21 to divide the bottom area of ​​the control console 21 into multiple areas. The partition plate 211 is made of heat insulation material, and the electrically controlled telescopic rods 221 are controlled separately by the same system.

[0024] In this embodiment, for some conventional rectangular takeaway lids, the material of the takeaway lid needs to be heated before shaping. During the heating stage, the degree of heating required varies depending on the shape of different areas of the takeaway lid. When the material moves under the heating component 2, the central flat area of ​​the takeaway lid only needs slight stretching, requiring relatively little heat. When adjusting the heating plate 223 in the middle area of ​​the partition plate 211, the temperature is adjusted to a low temperature by the temperature regulator 224. The edges or corners of the takeaway lid need to be stretched deeply to form buckles and sealing rings, requiring higher temperatures and more thorough softening. Therefore, the temperature of the heating plate 223 around the partition plate 211 is adjusted to be higher, thereby avoiding direct heating of the entire area, which could lead to insufficient heating of the edge area, resulting in thinning and cracking during stretching, or excessive heating of the central area, resulting in excessive sagging and thinning. At the same time, for takeaway lids with different shapes, the corresponding areas can be individually heated.

[0025] The working process of this utility model is as follows:

[0026] When forming a conventional rectangular takeaway lid, the material needs to be heated in sections before subsequent shaping. Since different areas of the lid have different structural shapes, the required heating levels also vary. When the material moves to the bottom of the heating assembly 2, the flat central area of ​​the lid requires only slight stretching and thus less heat. At this point, the heating plate 223 in the middle of the partition plate 211 can be adjusted to a lower temperature using the temperature regulator 224. However, for the edges or corners, which require deeper stretching to form snap-fit ​​and sealing ring structures, higher heating temperatures and more thorough material softening are needed. Therefore, the heating plate 223 in the corresponding area around the partition plate 211 needs to be heated to a higher temperature. This zoned temperature control effectively avoids the problems of insufficient heating at the edges, leading to thinning and cracking during stretching, or excessive sagging and thinning in the central area due to overheating. Furthermore, this structural design can adapt to the heating needs of takeaway lids of different shapes, achieving precise and flexible heating control by independently adjusting the heating parameters of the corresponding areas.

[0027] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0028] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable zone heating device for a plastic pneumatic thermoforming machine, characterized in that, include: Heating box (1); Heating assembly (2) includes a control console (21) and a heating component (22). The control console (21) is fixedly installed inside the heating box (1), and the heating component (22) is installed inside the control console (21). The heating of the material is achieved through the cooperation of the control console (21) and the heating component (22).

2. The adjustable zone heating device for a plastic pneumatic thermoforming machine according to claim 1, characterized in that, The bottom of the console (21) is fixedly connected to a partition plate (211) for dividing the bottom area of ​​the console (21) into multiple areas.

3. The adjustable zone heating device for a plastic pneumatic thermoforming machine according to claim 2, characterized in that, The heating component (22) includes an electrically controlled telescopic rod (221), a connecting shell (222), a heating plate (223), and a temperature regulator (224). The electrically controlled telescopic rod (221) is fixedly connected to the bottom of the control console (21) and is respectively set in multiple areas separated by the partition plate (211). The connecting shell (222) is fixedly connected to the output end of the electrically controlled telescopic rod (221). The heating plate (223) is fixedly connected to the bottom of the connecting shell (222). The temperature regulator (224) is fixedly installed on the top of the heating plate (223) and is set inside the connecting shell (222).

4. The adjustable zone heating device for a plastic pneumatic thermoforming machine according to claim 2, characterized in that, The spacer plate (211) is made of heat insulation material.

5. The adjustable zone heating device for a plastic pneumatic thermoforming machine according to claim 3, characterized in that, The electrically controlled telescopic rod (221) is configured to be controlled separately by the same system.

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