A heating assembly for a sealing machine

Abstract

The utility model relates to a heating assembly for sealing machine belongs to sealing machine technical field, the utility model discloses temperature -resistant filling body, heating wire and outer layer insulating sleeve, heating wire is spirally wound on temperature -resistant filling body along the length direction of temperature -resistant filling body, still includes heat conductor and inner layer insulating sleeve, and inner layer insulating sleeve is located temperature -resistant filling body and the outside of heating wire, and heat conductor is located the outside of inner layer insulating sleeve, and outer layer insulating sleeve is located the outside of heat conductor, the utility model can effectively ensure the efficiency and uniformity of heating to the efficiency and quality of guaranteeing sealing.

Description

Technical Field

[0001] This utility model relates to the field of sealing machine technology, and in particular to a heating component for a sealing machine. Background Technology

[0002] Sealing machines typically use heating elements to heat the material at the sealing area to a molten state, then apply mechanical pressure to bond it together. After the molten material cools and solidifies, a strong seal is formed. Existing technology, such as Chinese utility model patent ZL201721148236.5, discloses a heating wire assembly for a vacuum packaging machine with good safety performance. The heating wire assembly is placed in the sealing groove of the vacuum packaging machine and includes an insulating rope, a heating wire, and a high-temperature resistant sheath. The heating wire is spirally wound around the outside of the insulating rope, and the heating wire is covered with a high-temperature resistant sheath. It uses heating wire for heating, allowing for direct connection to mains power and higher heating power.

[0003] However, the heating wire assembly mentioned above still has the problem of uneven heating, which affects the sealing quality. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art and provide a heating component for a sealing machine that can effectively ensure heating efficiency and uniformity, thereby guaranteeing sealing efficiency and quality.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A heating element for a sealing machine includes a heat-resistant filler, a heating wire, and an outer insulating sleeve. The heating wire is spirally wound around the heat-resistant filler along its length. The heating element also includes a heat conductor and an inner insulating sleeve. The inner insulating sleeve is located outside the heat-resistant filler and the heating wire. The heat conductor is located outside the inner insulating sleeve, and the outer insulating sleeve is located outside the heat conductor.

[0007] Preferably, the heat-resistant filler includes a main body and two wiring portions located at opposite ends of the main body. The main body cooperates with the inner insulating sleeve, and the two wiring portions extend out of the inner insulating sleeve at both ends along its length.

[0008] Preferably, a connector is included, comprising a fastening part and a conductive part, the fastening part being connected to the outside of the inner insulating sleeve, and the conductive part being attached to the wiring part.

[0009] Preferably, the conductive part has a mounting part at one end facing away from the fastening part, and the mounting part is connected to an elastic mounting member.

[0010] Preferably, the elastic mounting component includes a spring, a first hook and a second hook disposed at opposite ends of the spring.

[0011] Preferably, the fastening part is spaced apart from the heat conductor.

[0012] Preferably, the outer insulating sleeve covers the outside of the mounting portion.

[0013] Preferably, the inner insulating sleeve includes a fiberglass layer and a silicone layer, with the fiberglass layer bonded to the heat-resistant filler and the heating wire, and the silicone layer bonded to the heat conductor.

[0014] Preferably, the heat conductor is made of aluminum alloy.

[0015] Preferably, the heating element is formed into a wide heating surface by pressing.

[0016] The advantages of this utility model are:

[0017] The heating element is used to generate heat, which can meet the requirements of direct connection to the mains power and provide a large heating power; and by setting the heat conductor, the uneven heating range of the heating element is transformed into a uniform heating range of the heat conductor, thereby ensuring the sealing quality.

[0018] The inner insulating sleeve prevents the heat conductor from affecting the normal operation of the heating wire, while ensuring safety.

[0019] The flexible mounting components effectively accommodate the deformation of the heating element during thermal expansion and contraction, ensuring the service life of the heating element. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a heating component for a sealing machine provided in an embodiment of this specification;

[0021] Figure 2 An exploded view of a heating component for a sealing machine, provided as an embodiment of this specification.

[0022] Figure 3 A cross-sectional view of a heating component for a sealing machine provided as an embodiment of this specification;

[0023] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0024] Figure 5 This is a schematic diagram of the structure of the elastic mounting component provided in the embodiments of this specification;

[0025] Figure 6 A schematic diagram of a first cross-sectional shape of a heating element for a sealing machine provided in an embodiment of this specification;

[0026] Figure 7A schematic diagram of a second cross-sectional shape of a heating element for a sealing machine provided in an embodiment of this specification;

[0027] Figure 8 A schematic diagram of a third cross-sectional shape of a heating element for a sealing machine provided in an embodiment of this specification;

[0028] In the figure: 1-Heat-resistant filler; 11-Main body; 12-Wiring part; 2-Heating wire; 3-Inner insulating sleeve; 4-Heat conductor; 5-Outer insulating sleeve; 6-Connector; 61-Fastening part; 62-Conductive part; 63-Mounting part; 7-Elastic mounting part; 71-First hook; 72-Spring; 73-Second hook. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] As mentioned in the background section, the heating wire assembly heats the packaging material through a heating wire spirally wound around the outside of the insulating rope. Therefore, the part corresponding to the heating wire has a large amount of heat generation, while the heat generation of other parts is relatively low, resulting in uneven heating of different parts of the sealing area and affecting the sealing quality.

[0031] Therefore, such as Figure 1-4 As shown, this embodiment provides a heating element for a sealing machine, comprising, from the inside out, a heat-resistant filler 1, a heating wire 2, an inner insulating sleeve 3, a heat conductor 4, and an outer insulating sleeve 5. The heat-resistant filler 1 is elongated and is typically made of fiberglass. The heating wire 2 is spirally wound evenly along the length of the heat-resistant filler 1; the heating wire 2 is typically made of nickel-chromium wire. The inner insulating sleeve 3 is fitted over the heat-resistant filler 1 and the heating wire 2. It has a double-layer structure: the inner layer is made of fiberglass, and the outer layer is made of silicone. The fiberglass layer directly contacts the heating wire 2, ensuring the insulation and heat resistance of the inner insulating sleeve 3, while the silicone layer ensures the structural stability of the entire inner insulating sleeve 3, preventing deformation caused by various factors from affecting its service life. The heat conductor 4 has a tubular structure and is fitted over the inner insulating sleeve 3. It contacts the silicone layer of the inner insulating sleeve 3 and is generally made of aluminum alloy to ensure thermal conductivity, resulting in relatively uniform temperature across the heat conductor 4 and thus ensuring sealing quality. The outer insulating sleeve 5 is fitted over the heat conductor 4 and is generally made of Teflon to ensure insulation between the entire heating component and the external environment, ensuring safety. Thus, this embodiment mainly adds a heat conductor 4 to transfer the heat generated by the heating wire 2 to the heat conductor 4. Utilizing the thermal conductivity of the heat conductor 4, the originally uneven heating range of the heating wire 2 is transformed into a uniform heating range of the heat conductor 4, thereby ensuring sealing quality.

[0032] Specifically, the heat-resistant filler 1 includes a main body 11 and two wiring portions 12 located at opposite ends of the main body 11. The main body 11 cooperates with the inner insulating sleeve 3, and the two wiring portions 12 extend from both ends of the inner insulating sleeve 3 in the length direction. Thus, the heating wire portion wound on the wiring portion 12 is exposed outside the inner insulating sleeve 3, which facilitates connection to the power supply.

[0033] To facilitate power connection of the entire heating element, a connector 6 is provided at each of the opposite ends of the heating element. The connector 6 includes a fastening part 61 and a conductive part 62. The fastening part 61 connects to the outside of the inner insulating sleeve 3, and the conductive part 62 fits against the wiring part 12. The connector 6 can be made of copper, which has good ductility. It can be held tightly to the outside of the inner insulating sleeve 3 by the friction between itself and the silicone layer of the inner insulating sleeve 3. Alternatively, a protrusion can be integrally formed on the silicone layer of the inner insulating sleeve 3 to mate with the hole machined on the connector 6, achieving a stable connection. The conductive part 62, with its large contact area, ensures effective contact with the heating wire 2 wound on the wiring part 12, guaranteeing a stable power input.

[0034] Additionally, the conductive part 62 has a mounting part 63 at the end opposite to the fastening part 61. The mounting part 63 provides an effective mounting connection point for the connector. Specifically, the mounting part 63 is connected to a flexible mounting member 7. The installation of the entire heating assembly and power connection within the sealing machine are achieved through two flexible mounting members 7. To meet the elasticity requirements, the flexible mounting member 7 can specifically adopt, for example... Figure 5 The structure shown includes an integrally formed spring 72, a first hook 71 and a second hook 73 located at opposite ends of the spring 72. The first hook 71 is used to connect to the mounting part 63. The copper mounting part 63 can be bent into a ring or other shape to connect with the first hook 71. The second hook 73 is used to connect to the power connector inside the sealing machine. The spring 72 is always kept in a stretched state during use to adapt to the deformation of the heating element during thermal expansion and contraction, thus ensuring the service life of the heating element.

[0035] For safety reasons, the fastening part 61 is spaced apart from the heat conductor 4 to prevent the heat conductor from being connected to the power source. At the same time, the outer insulating sleeve 5 covers the outside of the mounting part 63 to ensure insulation from the outside environment.

[0036] Figure 1 and 2The heating element shown is tubular in shape, representing an intermediate processing stage. Actual products typically require pressing to create a flattened structure, resulting in a wider heating surface. This increases the contact area with the sealing area, ensuring sealing quality. Because the materials used in all parts of the heating element have a certain degree of ductility, they are easily flattened. The main purpose of pressing is to provide a wider heating surface; the specific shape depends on the requirements of the installation location within the sealing machine. Figure 6-8 The shape shown.

[0037] The above are merely preferred embodiments of this utility model, and are implementations based on the overall concept of this utility model. Furthermore, the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A heating element for a sealing machine, comprising a heat-resistant filler, a heating wire, and an outer insulating sleeve, wherein the heating wire is spirally wound around the heat-resistant filler along its length, characterized in that, It also includes a heat conductor and an inner insulating sleeve. The inner insulating sleeve is located outside the heat-resistant filler and heating wire, the heat conductor is located outside the inner insulating sleeve, and the outer insulating sleeve is located outside the heat conductor.

2. The heating element for a sealing machine according to claim 1, characterized in that, The heat-resistant filler includes a main body and two wiring portions located at opposite ends of the main body. The main body cooperates with the inner insulating sleeve, and the two wiring portions extend out of the inner insulating sleeve at both ends along its length.

3. A heating element for a sealing machine according to claim 2, characterized in that, The device includes a connector, which comprises a fastening part and a conductive part. The fastening part is connected to the outside of the inner insulating sleeve, and the conductive part is attached to the wiring part.

4. A heating element for a sealing machine according to claim 3, characterized in that, The conductive part has a mounting part at one end facing away from the fastening part, and the mounting part is connected to an elastic mounting member.

5. A heating element for a sealing machine according to claim 4, characterized in that, The elastic mounting component includes a spring, a first hook and a second hook located at opposite ends of the spring.

6. A heating element for a sealing machine according to claim 3, characterized in that, The fastening part is spaced apart from the heat conductor.

7. A heating element for a sealing machine according to claim 4, characterized in that, The outer insulating sleeve covers the outside of the mounting part.

8. A heating element for a sealing machine according to claim 1, characterized in that, The inner insulating sleeve includes a fiberglass layer and a silicone layer. The fiberglass layer is bonded to the heat-resistant filler and the heating wire, and the silicone layer is bonded to the heat conductor.

9. A heating element for a sealing machine according to claim 1, characterized in that, The heat conductor is made of aluminum alloy.

10. A heating element for a sealing machine according to claim 1, characterized in that, The heating element is formed into a wide heating surface by pressing.

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