A hot melt welding joint

Abstract

The present application provides a hot melt welding joint, comprising an insulating substrate, the insulating substrate having a contact surface in contact with a part to be welded, and also comprising: a mechanical connector arranged on the insulating substrate, for mechanically connecting with a driving device of a hot melt welding device; a first electrical connector and a second electrical connector, the first electrical connector and the second electrical connector are arranged at intervals, and both are used to be electrically connected with a control device of the hot melt welding device; a heating element, electrically connected with the first electrical connector and the second electrical connector, respectively, the heating element is used to generate heat under the action of electric energy, wherein the heating element exposes the contact surface; a limiting element, in contact with the heating element, for limiting the movement of the heating element, so that the heating element remains in a state of exposing the contact surface; a thermocouple, for detecting the temperature of the insulating substrate, and outputting a signal to the control device of the hot melt welding device. The present application helps to improve welding quality and welding efficiency, reduce scrap rate, and reduce production costs.

Description

Technical Field

[0001] The present application relates to the technical field of hot melt welding devices, and in particular to a hot melt welding joint. Background Art

[0002] A hot melt welding joint is a welding device or tool based on the principle of heat transfer and metal melting. During the welding process, a heat source (such as a flame, an arc, or a high-temperature current) heats the welding material to the melting point, causing it to change from a solid state to a liquid state. When the material reaches a liquid state, its surface tension decreases, its fluidity increases, and it is able to fill the gaps in the connection. Subsequently, when the heat source stops heating and moves away, the liquid metal begins to cool and gradually solidifies, forming a solid weld.

[0003] After being used for a period of time, the temperature of the existing hot melt welding joint becomes unstable due to the influence of the ambient temperature and the hot melt welding joint, so that the hot melt welding joint cannot perform hot melt welding on the workpiece at a preset temperature. Utility Model Content

[0004] In order to overcome the defects of the above-mentioned prior art, the present application provides a hot melt welding joint, and the specific technical solution is as follows:

[0005] A hot melt welding joint comprises an insulating substrate having a contact surface for contacting with a workpiece to be welded, and further comprising:

[0006] Mechanical connector, used for mechanical connection with the driving device of the hot melt welding equipment;

[0007] A first electrical connector and a second electrical connector, wherein the first electrical connector and the second electrical connector are spaced apart and are both used to electrically connect to a control device of the hot melt welding equipment;

[0008] a heating element, electrically connected to the first electrical connection element and the second electrical connection element respectively, the heating element being used to generate heat under the action of electrical energy, wherein the heating element exposes the contact surface;

[0009] a limiting member, in contact with the heating element, and used for limiting the movement of the heating element so that the heating element remains exposed from the contact surface;

[0010] The thermocouple is used to detect the temperature of the insulating substrate and output a signal to a control device of the hot melt welding equipment.

[0011] In a specific embodiment, the number of the heating elements is more than two, and the more than two heating elements are spaced apart from each other;

[0012] The first ends of more than two heating elements are electrically connected to the same first electrical connector, and the second ends of more than two heating elements are electrically connected to the same second electrical connector; and / or, the limiting member includes a first limiting member and a second limiting member, the first ends of more than two heating elements share the same first limiting member, and the second ends of more than two heating elements share the same second limiting member.

[0013] In a specific embodiment, the conductivity of the first electrical connection member is greater than the conductivity of the limiting member, and the conductivity of the second electrical connection member is greater than the conductivity of the limiting member.

[0014] In a specific embodiment, the two ends of the heating element extend from the contact surface through the adjacent surface of the contact surface to the opposite surface of the contact surface;

[0015] Alternatively, both ends of the heating element extend from the contact surface to the adjacent surface of the contact surface, and both ends of the heating element are respectively located at the adjacent surfaces of two opposite contact surfaces.

[0016] In a specific embodiment, the limiting members are disposed at both ends of the heating element, and the limiting members include a pressure member and an extrusion member. The extrusion member contacts the end of the heating element, and the extrusion member is configured to squeeze the end of the heating element under the action of the pressure member to make the heating element taut.

[0017] In a specific embodiment, the pressure-applying member includes a spiral rotating member, which passes through the extrusion member and is fixed on the insulating substrate, and is used to rotate and move toward the extrusion member under the action of an external force to apply pressure to the extrusion member.

[0018] In a specific embodiment, when the end of the heating element is located on the opposite surface of the contact surface, a positioning groove is provided on the adjacent surface of the contact surface and / or the opposite surface of the contact surface, and the heating element is located in the positioning groove;

[0019] Alternatively, when the end of the heating element is located on a surface adjacent to the contact surface, a positioning groove is provided on the surface adjacent to the contact surface, and the heating element is located in the positioning groove.

[0020] In a specific embodiment, the heat-melting welding joint further includes a heat-resistant insulating member, the heat-resistant insulating member covers the contact surface, and the heat-generating member is exposed from the heat-resistant insulating member.

[0021] In a specific embodiment, the insulating substrate has an elastic structure, and the elastic structure is used to deform when the contact surface contacts the part to be welded, so that the heat generating part and the contact surface form a flush surface.

[0022] In a specific embodiment, the mechanical connecting member is provided with a rotating member, and the rotating member is used to enable the mechanical connecting member to be rotatably arranged on the driving device.

[0023] This application has at least the following beneficial effects:

[0024] A hot melt welding joint of the present application includes an insulating substrate, the insulating substrate having a contact surface that contacts the parts to be welded, and also includes: a mechanical connector arranged on the insulating substrate, which is used to mechanically connect to a driving device of the hot melt welding equipment; a first electrical connector and a second electrical connector, the first electrical connector and the second electrical connector are arranged at intervals, and both are used to electrically connect to a control device of the hot melt welding equipment; a heating element, which is electrically connected to the first electrical connector and the second electrical connector, respectively, and the heating element is used to generate heat under the action of electric energy, wherein the heating element exposes the contact surface; a limiting element, which contacts the heating element and is used to limit the movement of the heating element so that the heating element remains in a state of exposing the contact surface; and a thermocouple, which is used to detect the temperature of the insulating substrate and output a signal to the control device of the hot melt welding equipment.

[0025] The present application provides a thermocouple in the hot melt welding joint to accurately measure the temperature of the hot melt welding joint so that the control device of the hot melt welding equipment can control the temperature of the hot melt welding joint; and the thermocouple can monitor the temperature change during the welding process in real time, so that the control device of the hot melt welding equipment can timely detect and correct the temperature deviation; to ensure that the temperature of the heating element is maintained at a preset temperature, to avoid welding defects caused by overheating or overcooling of the heating element, which helps to improve welding quality and welding efficiency, reduce scrap rate, and reduce production costs.

[0026] The present application ensures that the heating element is in a stable state with the contact surface exposed by setting a limiter, so that the heating element can better contact the workpiece to be welded, thereby providing a more uniform and stable welding effect, helping to reduce welding defects and thus improving welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 The structure of the hot melt welding joint provided in this embodiment is schematically shown Figure 1 ;

[0029] Figure 2 The structure of the hot melt welding joint provided in this embodiment is schematically shown Figure 2 ;

[0030] Figure 3 The structure of the hot melt welding joint provided in this embodiment is schematically shown Figure 3 ;

[0031] Figure 4 The structure of the hot melt welding joint provided in this embodiment is schematically shown Figure 4 .

[0032] Reference numerals:

[0033] 1-insulating substrate; 2-mechanical connector; 3-first electrical connector; 4-second electrical connector; 5-heating element; 6-limiting element; 7-thermocouple; 11-contact surface; 12-adjacent surface of contact surface; 13-opposite surface of contact surface; 14-positioning groove; 15-elastic element; 51-first end of heating element; 52-second end of heating element; 61-first limiting element; 62-second limiting element; 63-pressure element; 64-extrusion element; 631-spiral rotating element. DETAILED DESCRIPTION

[0034] Hereinafter, various embodiments of the present application will be described more fully. The present application may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present application to the specific embodiments disclosed herein, but the present application should be understood to cover all adjustments, equivalents and / or alternatives within the spirit and scope of the various embodiments of the present application.

[0035] Hereinafter, the term "include" or "may include" used in various embodiments of the present application indicates the presence of a disclosed function, operation, or element, and does not limit the addition of one or more functions, operations, or elements. In addition, as used in various embodiments of the present application, the terms "include", "have", and their cognates are intended only to indicate a specific feature, number, step, operation, element, component, or combination of the foregoing, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components, or a combination of the foregoing or the possibility of adding one or more features, numbers, steps, operations, elements, components, or a combination of the foregoing.

[0036] In various embodiments of the present application, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0037] The expressions (such as "first", "second", etc.) used in the various embodiments of the present application may modify the various constituent elements in the various embodiments, but may not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of the present application, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0038] It should be noted that in this application, unless otherwise clearly specified and defined, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In the present application, a person of ordinary skill in the art should understand that the terms indicating orientation or positional relationship herein are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] The terms used in the various embodiments of the application are only used to describe the purpose of specific embodiments and are not intended to limit the various embodiments of the application. As used herein, the singular form is intended to also include the plural form, unless the context clearly indicates otherwise. Unless otherwise limited, all terms used here (including technical terms and scientific terms) have the same meaning as the meanings commonly understood by ordinary technicians in the field of the various embodiments of the application. The terms (such as the terms defined in the dictionary generally used) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning, unless clearly defined in the various embodiments of the application.

[0041] like Figures 1 to 4 As shown, this embodiment provides a hot melt welding joint, including an insulating substrate 1, the insulating substrate 1 having a contact surface 11 in contact with a workpiece to be welded, and also including:

[0042] The mechanical connector 2 is used to mechanically connect with the driving device of the hot melt welding equipment, so that the hot melt welding joint is driven by the driving device to contact with the workpiece to be welded through the contact surface 11;

[0043] A first electrical connector 3 and a second electrical connector 4, the first electrical connector 3 and the second electrical connector 4 are arranged at intervals, and are both used for electrically connecting to a control device of the hot-melt welding equipment;

[0044] The heating element 5 is electrically connected to the first electrical connection element 3 and the second electrical connection element 4 respectively, and the heating element 5 is used to generate heat under the action of electric energy, wherein the heating element 5 exposes the contact surface 11;

[0045] The limiting member 6 is in contact with the heating element 5 and is used to limit the movement of the heating element 5 so that the heating element 5 remains exposed from the contact surface 11;

[0046] The thermocouple 7 is used to detect the temperature of the insulating substrate 1 and output a signal to the control device of the hot melt welding equipment.

[0047] In this embodiment, the limiting member 6 is provided to ensure that the heating element 6 is in a stable state with the contact surface 11 exposed, so that the heating element 6 can better contact with the welded parts, thereby providing a more uniform and stable welding effect, helping to reduce welding defects and thus improving welding quality.

[0048] In this embodiment, a thermocouple 7 is set in the hot melt welding joint to accurately measure the temperature of the hot melt welding joint, so that the control device of the hot melt welding equipment can control the temperature of the hot melt welding joint; and the thermocouple 7 can monitor the temperature change during the welding process in real time, so that the control device of the hot melt welding equipment can timely detect and correct the temperature deviation; to ensure that the temperature of the heating element 5 is maintained at a preset temperature, to avoid welding defects caused by overheating or overcooling of the heating element 5, which helps to improve welding quality and welding efficiency, reduce scrap rate, and reduce production costs.

[0049] like Figures 1 to 4 As shown, in one embodiment, the mechanical connector 2 is provided with a rotating member (not shown in the figure), and the rotating member is used to enable the mechanical connector 2 to be rotatably arranged on the driving device. In this embodiment, the mechanical connector 2 has a rotating function by providing a rotating member, so that when the contact between the hot melt welding joint and the surface of the contacted member deviates, the hot melt welding joint can rotate to adapt to the surface of the contacted member, which helps to improve the welding quality and welding efficiency.

[0050] Specifically, the mechanical connecting member 2 is rotatably disposed on the rotating member; and / or the rotating member is rotatably disposed on the driving device.

[0051] In one embodiment, the rotating member is a rotating shaft.

[0052] like Figures 1 to 4As shown, in one embodiment, the insulating substrate 1 has an elastic structure, which is used to deform when the contact surface 11 contacts the part to be welded, so that the heating element 5 forms a flush surface with the contact surface 11. The elastic structure plays a buffering role when the hot melt welding joint is welded, and evens out the stress between the heating element 5 and the part to be welded, so as to avoid local protrusions that cause holes in the welding position, which helps to reduce welding defects and thus improve welding quality.

[0053] In one embodiment, the insulating substrate 1 includes an elastic member 15, which constitutes an elastic structure and is used to deform when the contact surface 11 contacts the welded part, so that the heating element 5 forms a flush surface with the contact surface 11. Specifically, the elastic member 15 is a heat-resistant foamed silicone pad, but is not limited thereto.

[0054] like Figures 1 to 4 As shown, in one embodiment, the hot melt welding joint further includes a heat-resistant insulating member (not shown in the figure), the heat-resistant insulating member covers the contact surface 11, and the heat-generating member 5 is exposed from the heat-resistant insulating member. In this embodiment, by providing the heat-resistant insulating member, the heat-generating member 5 is easily separated from the member to be welded, the probability of hot melt adhesion between the heat-generating member 5 and the member to be welded is reduced, and the welding quality is improved.

[0055] Specifically, the heat-resistant insulating member is Teflon glass fiber cloth, but is not limited thereto.

[0056] like Figures 1 to 4 As shown, in one embodiment, the number of the heating elements 5 is more than two, and the more than two heating elements 5 are spaced apart from each other. In this embodiment, the number of the heating elements 5 is increased to increase the area of ​​the heating elements 5 exposed on the contact surface 11, thereby improving the welding effect.

[0057] In one embodiment, the first ends of the two or more heating elements 5 are electrically connected to the same first electrical connector 3, and the second ends of the two or more heating elements 5 are electrically connected to the same second electrical connector 4. In this embodiment, the electrical connection with the two or more heating elements 5 is achieved through a first electrical connector 3 and a second electrical connector 4, so that the two or more heating elements 5 are in parallel with each other.

[0058] In one embodiment, the limiting member 6 includes a first limiting member 61 and a second limiting member 62. The first ends of the two or more heating elements 5 share the same first limiting member 61, and the second ends of the two or more heating elements 5 share the same second limiting member 62. In this embodiment, the first limiting member 61 and the second limiting member 62 are used to limit the movement of the two or more heating elements 5, so the structure is simple and easy to produce.

[0059] Specifically, the first limiting member 61 and the second limiting member 62 have the same structure.

[0060] In one embodiment, the conductivity of the first electrical connector 3 is greater than that of the stopper 6 , and the conductivity of the second electrical connector 4 is greater than that of the stopper 6 , so that the current path where the stopper 6 is located is short-circuited.

[0061] In one embodiment, the conductivity of the heating element 5 is greater than the conductivity of the limiting element 6 .

[0062] Specifically, the conductivity is reflected by the following parameters: resistance (R), resistivity (ρ), conductance (G), conductivity (σ), current density (J) and carrier concentration (n), etc., but not limited thereto.

[0063] like Figures 1 to 4 As shown, in one embodiment, both ends of the heating element 5 extend from the contact surface 11 through the adjacent surface 12 of the contact surface to the opposite surface 13 of the contact surface. This embodiment increases the area of ​​the heating element 5 exposed on the contact surface 11, increases the welding area of ​​the hot melt welding joint, and helps to improve the welding effect.

[0064] In another embodiment, the two ends of the heating element 5 may extend from the contact surface 11 to the adjacent surface 12 of the contact surface, and the two ends of the heating element 5 are respectively located at the adjacent surfaces 12 of two opposite contact surfaces. This embodiment increases the area of ​​the heating element 5 exposed on the contact surface 11, increases the welding area of ​​the hot melt welding joint, and helps to improve the welding effect.

[0065] like Figures 1 to 4 As shown, in one embodiment, both ends of the heating element 5 are provided with limiting members 6, the limiting members 6 include a pressure member 63 and an extrusion member 64, the extrusion member 64 is in contact with the end of the heating element 5, and the extrusion member 64 is configured to extrude the end of the heating element 5 under the action of the pressure member 63 to make the heating element 5 taut.

[0066] In this embodiment, a limiting member 6 is provided to fix the heating element 5 on the insulating substrate 1 in a taut state, thereby preventing the heating element 5 from loosening and allowing the heating element 6 to stably contact the workpiece to be welded, thereby providing a more uniform and stable welding effect, helping to reduce welding defects and thus improving welding quality.

[0067] like Figures 1 to 4 As shown, in one embodiment, the conductivity of the first electrical connection member 3 is greater than the conductivity of the extrusion member 64 , and the conductivity of the second electrical connection member 4 is greater than the conductivity of the extrusion member 64 .

[0068] like Figures 1 to 4 As shown, in one embodiment, the pressure member 63 includes a spiral rotating member 631, which passes through the extrusion member 64 and is fixed on the insulating substrate 1. The spiral rotating member 631 is used to rotate and move toward the extrusion member 64 under the action of external force to apply pressure to the extrusion member 64.

[0069] Specifically, the spiral rotating member 631 is a screw rod, and a nut is arranged in the insulating base 1. After the screw rod passes through the extrusion member 64, it extends into the nut and is threadedly connected with the nut.

[0070] like Figures 1 to 4 As shown, in one embodiment, when the end of the heating element 5 is located on the opposite surface 13 of the contact surface, the adjacent surface 12 of the contact surface and / or the opposite surface 13 of the contact surface are provided with a positioning groove 14, and the heating element 5 is located in the positioning groove 14. In this embodiment, the heating element 5 is fixed by providing the positioning groove 14, and the heating element 5 is maintained at a preset position to prevent the movement of the heating element 5 from affecting the welding effect.

[0071] In one embodiment, when the end of the heating element 5 is located on the adjacent surface 12 of the contact surface, the adjacent surface 12 of the contact surface is provided with a positioning groove 14, and the heating element 5 is located in the positioning groove 14. In this embodiment, the heating element 5 is fixed by providing the positioning groove 14, and the heating element 5 is maintained at a preset position to prevent the movement of the heating element 5 from affecting the welding effect.

[0072] Those skilled in the art will appreciate that the accompanying drawings are merely schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily required for implementing the present application.

[0073] Those skilled in the art will appreciate that the modules in the device in the implementation scenario can be distributed in the device in the implementation scenario according to the implementation scenario description, or can be changed accordingly and located in one or more devices different from the implementation scenario. The modules in the above implementation scenario can be combined into one module, or can be further split into multiple sub-modules.

[0074] The above application serial numbers are for description only and do not represent the advantages or disadvantages of the implementation scenarios.

[0075] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A hot melt welding joint, characterized in that: The invention comprises an insulating substrate, wherein the insulating substrate has a contact surface for contacting with a workpiece to be welded, and further comprises: Mechanical connector, used for mechanical connection with the driving device of the hot melt welding equipment; A first electrical connector and a second electrical connector, wherein the first electrical connector and the second electrical connector are spaced apart and are both used to electrically connect to a control device of the hot melt welding equipment; a heating element, electrically connected to the first electrical connection element and the second electrical connection element respectively, the heating element being used to generate heat under the action of electrical energy, wherein the heating element exposes the contact surface; a limiting member, in contact with the heating element, and used for limiting the movement of the heating element so that the heating element remains exposed from the contact surface; The thermocouple is used to detect the temperature of the insulating substrate and output a signal to a control device of the hot melt welding equipment.

2. The hot melt welding joint according to claim 1, characterized in that: The number of the heating elements is more than two, and the more than two heating elements are spaced apart from each other; The first ends of more than two heating elements are electrically connected to the same first electrical connector, and the second ends of more than two heating elements are electrically connected to the same second electrical connector; and / or, the limiting member includes a first limiting member and a second limiting member, the first ends of more than two heating elements share the same first limiting member, and the second ends of more than two heating elements share the same second limiting member.

3. The hot melt welding joint according to claim 2, characterized in that: The conductivity of the first electrical connection member is greater than that of the limiting member, and the conductivity of the second electrical connection member is greater than that of the limiting member.

4. The hot melt welding joint according to claim 1, characterized in that: The two ends of the heating element extend from the contact surface through the adjacent surface of the contact surface to the opposite surface of the contact surface; Alternatively, both ends of the heating element extend from the contact surface to the adjacent surface of the contact surface, and both ends of the heating element are respectively located at the adjacent surfaces of two opposite contact surfaces.

5. The hot melt welding joint according to claim 4, characterized in that: The limiting members are arranged at both ends of the heating element, and the limiting members include a pressure member and an extrusion member. The extrusion member contacts the end of the heating element, and the extrusion member is configured to squeeze the end of the heating element under the action of the pressure member to make the heating element taut.

6. The hot melt welding joint according to claim 5, characterized in that: The pressure-applying member includes a spiral rotating member, which passes through the extrusion member and is fixed on the insulating substrate, and is used to rotate and move toward the extrusion member under the action of an external force to apply pressure to the extrusion member.

7. The hot melt welding joint according to claim 4, characterized in that: When the end of the heating element is located on the surface opposite to the contact surface, a positioning groove is provided on the adjacent surface of the contact surface and / or the surface opposite to the contact surface, and the heating element is located in the positioning groove; Alternatively, when the end of the heating element is located on a surface adjacent to the contact surface, a positioning groove is provided on the surface adjacent to the contact surface, and the heating element is located in the positioning groove.

8. The hot melt welding joint according to claim 1, characterized in that: The heat-melting welding joint further includes a heat-resistant insulating member, the heat-resistant insulating member covers the contact surface, and the heating element is exposed from the heat-resistant insulating member.

9. The heat fusion welding joint according to claim 1, characterized in that: The insulating substrate has an elastic structure, and the elastic structure is used to deform when the contact surface contacts the part to be welded, so that the heating element and the contact surface form a flush surface.

10. The heat fusion welding joint according to claim 1, characterized in that: The mechanical connecting member is provided with a rotating member, and the rotating member is used to enable the mechanical connecting member to be rotatably arranged on the driving device.

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