Power supply device and resistance welding machine for resistance welding of thermoplastic composite materials

Abstract

The present invention discloses a power supply device and a resistance welding machine for resistance welding of thermoplastic composite materials, belonging to thermoplastic composite material processing equipment. The power supply device includes a power supply board and a joint assembly; the power supply board includes a negative electrode sheet and a positive electrode sheet, and the negative electrode sheet and the positive electrode sheet are separated by an insulating sheet; the joint assembly includes a plug and a socket; one end of the socket is connected to the plug, and the other end is fixed to the positive electrode sheet of the power supply board; the plug is provided with an output contact for output, and a positive contact and a negative contact are also provided inside the plug; when the plug is inserted into the socket, the positive contact can contact with the output contact, so that the plug is connected to the positive electrode sheet; when the plug is separated from the socket, the negative contact can be connected with the output contact, so that the plug is connected to the negative electrode sheet. The present invention can improve the safety performance of resistance welding of thermoplastic composite materials, reduce the risk of electric shock, and is simple and convenient to operate.

Description

Technical Field

[0001] The invention relates to thermoplastic composite material processing equipment, in particular to a power supply device and a resistance welding machine used for resistance welding of thermoplastic composite materials. Background Art

[0002] Thermoplastic composites have attracted widespread attention due to their high damage tolerance, high reuse rate, and easy molding. For composite materials, the most common connection methods are mechanical connection and adhesive connection. However, the use of mechanical connection will inevitably increase the weight of the structure and cause stress concentration problems. The use of adhesive connection requires higher surface treatment and longer production cycle. Resistance welding has the advantages of concentrated welding heat, short heating time, small welding deformation and stress, high production efficiency and simple operation. Therefore, resistance welding is increasingly widely used in the connection of thermoplastic composites.

[0003] The existing resistance welding equipment has high power and a high degree of mechanization and automation, but the equipment cost is high and maintenance is difficult. The commonly used high-power single-phase AC welding machine is not suitable for welding composite materials. For composite materials, resin-based materials have low thermal conductivity, long temperature change time required for welding, large difference in welding pressure magnitude due to the viscosity flow state of the heated resin, and the reinforcement material is misaligned with the resin flow during welding. These characteristics will affect the welding quality, making the current more mature metal material resistance welding experience system not very applicable in the field of composite material welding. If it is to be improved, a large number of experiments need to be carried out in the range of higher deformation, long-term low temperature, and low pressure magnitude to construct a widely applicable composite material welding knowledge system. The existing metal material resistance welding equipment was designed for instantaneous high temperature and high pressure welding conditions at the beginning. This type of equipment has low applicability in the welding process of composite materials, and there are a large number of electrical safety hazards in the self-built thermoplastic composite material welding device.

[0004] Therefore, it is crucial to design a set of high-safety power supply equipment specifically for thermoplastic composite welding to fill the gap in related fields. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a power supply device and a resistance welding machine for resistance welding of thermoplastic composite materials, which can realize resistance welding connection of thermoplastic composite materials and have high safety performance and simple and convenient operation.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A power supply device for resistance welding of thermoplastic composite materials, comprising a power supply board and a connector assembly; the power supply board comprises a negative electrode sheet and a positive electrode sheet, and the negative electrode sheet and the positive electrode sheet are separated by an insulating sheet; the connector assembly comprises a plug and a socket; one end of the socket is connected to the plug, and the other end is fixed to the positive electrode sheet of the power supply board; the plug is provided with an output contact for output, and a positive contact and a negative contact are also provided inside the plug; when the plug is inserted into the socket, the positive contact can contact with the output contact, so that the plug is connected to the positive electrode sheet; when the plug is separated from the socket, the negative contact can be connected with the output contact, so that the plug is connected to the negative electrode sheet.

[0008] In this way, by setting the power supply device as a positive electrode-insulating layer-negative electrode stacked power transmission system, the risk of electric shock caused by the existing power supply device using a wiring harness for power supply is avoided, the wiring space inside the power supply board is saved, and the power supply device is more concise. By setting a connector assembly including a plug and a socket, the plug is provided with an output contact for output, and a positive contact and a negative contact are also provided inside the plug, and the socket is fixed on the positive electrode sheet. In this way, when the plug is inserted into the socket, the positive contact inside the plug is connected to the output contact, and the connector assembly is connected to the positive electrode sheet at this time, and the connector assembly behaves as connecting the positive pole of the circuit. On the contrary, when the plug is separated from the socket, the negative contact inside the plug is connected to the output contact, and the connector assembly is connected to the negative electrode sheet at this time, and the connector assembly behaves as connecting the negative pole of the circuit. Other modules (or components) in resistance welding can form a circuit by being connected to the connector assembly connecting the positive pole of the circuit and the connector assembly connecting the negative pole respectively. The connector assembly connecting the positive pole of the circuit and the connector assembly connecting the negative pole provide positive and negative power outputs for other modules (or components) in resistance welding. The functional integration of the module installation positioning hole, the positive circuit output hole and the negative circuit output hole is realized.

[0009] Preferably, through holes distributed in a rectangular array are provided on the negative electrode sheet, the insulating sheet and the positive electrode sheet, and the socket is fixed in the through hole of the positive electrode sheet of the power supply board. The through holes distributed in a rectangular array on the negative electrode sheet, the insulating sheet and the positive electrode sheet are arranged neatly, which can provide a location for the positioning and rapid installation of other modules in the process of resistance welding of thermoplastic composite materials, making installation and positioning more convenient and realizing modular rapid installation.

[0010] Preferably, the power supply board further includes a positioning plate located above the negative electrode sheet and a lower cover plate located below the positive electrode sheet, and the positioning plate and the lower cover plate are also provided with through holes distributed in a rectangular array, so that the power supply device is easier to locate and safer.

[0011] Preferably, the plug comprises a shell and a conductive rod; the shell is a cylindrical structure with one end closed, and the other end is connected to a ring-shaped negative electrode connector; the outer side of the negative electrode connector extends to the outside of the shell and its outer diameter is larger than the diameter of the through hole on the negative electrode sheet; an output ring extending to the inside of the shell is provided on the shell, and the inner side of the output ring forms an output contact; one end of the conductive rod is connected to a handle, and the other end passes through the shell and the negative electrode connector and is connected to a positive electrode connector; a negative electrode ring is sleeved on the conductive rod, and the outer side of the negative electrode ring extends in the direction of the output ring to form a negative electrode contact point; a conductive spring is also sleeved on the conductive rod between the negative electrode ring and the negative electrode connector, one end of the conductive spring is connected to the negative electrode ring, and the other end is connected to the negative electrode connector; a positive electrode rod is also provided on the plug rod along its radial direction, the positive electrode rod is located on the side of the negative electrode ring away from the conductive spring, and the outer side of the positive electrode rod extends toward the output ring to form a positive electrode contact; the conductive rod and the negative electrode connector, the negative electrode ring and the conductive spring are separated by insulating materials; when the conductive rod moves along the axial direction of the shell, the negative electrode contact and the positive electrode contact can respectively contact and communicate with the output contact.

[0012] By setting an output ring for output on the shell, setting a positive electrode rod and a negative electrode ring in the shell, and providing a conductive spring between the negative electrode ring and the negative electrode connector, after the socket is fixed to the through hole on the power supply board, when the plug is inserted, the negative electrode connector, due to its outer diameter being larger than the shell, abuts and communicates with the through hole on the negative electrode sheet. At this time, the conductive spring is in a natural state, and the negative electrode contact of the negative electrode ring contacts the output contact of the output ring under the action of the conductive spring, and the positive electrode connector has not yet reached the socket and is in a separated state from the socket. The negative electrode sheet is connected to the output ring through the conductive spring, the negative electrode ring, and the socket behaves as a negative electrode. When the conductive rod is pressed downward to insert the positive electrode connector into the socket, the negative electrode ring connected to the positive electrode rod also moves downward, so the negative electrode contact of the negative electrode ring is disconnected from the output contact of the output ring. At this time, the positive electrode contact of the positive electrode rod contacts the output contact of the output ring, and the positive electrode sheet is connected to the output ring through the positive electrode connector, the conductive rod and the positive electrode sheet, so that the socket behaves as a positive electrode. On the contrary, when the plug is switched from being a positive electrode to being a negative electrode, the conductive rod is lifted up by the handle to separate the positive terminal from the socket, and the conductive spring changes from a compressed state to a natural state. The conductive spring stretches upward to drive the negative electrode ring to rise, thereby driving the conductive rod fixed to it to rise, so that the positive contact is disconnected from the output contact, and the negative contact is in contact with the output contact.

[0013] Preferably, the conductive rod, output ring, positive electrode rod, negative electrode ring and negative electrode connector are all made of conductive materials to enable current conduction and increase the reliability of the device.

[0014] Preferably, the positive electrode rod is made of elastic conductive material. Thus, when the positive electrode connector is connected to the positive electrode sheet, the positive electrode contact of the positive electrode rod can interact with the output contact of the output ring to play a limiting role, so that the conductive rod is fixed at this position.

[0015] Preferably, the socket includes a limiter and a positive pin; the limiter is provided with a limiter socket matching the positive connector; the positive pin extends away from the limiter and can be fixedly connected with the through hole on the positive electrode sheet, thereby increasing the reliability of the entire device.

[0016] Preferably, the shell is an insulating shell, and the handle is an insulating handle, thus improving the safety of electricity use and reducing the risk of electricity use.

[0017] The present invention also provides a resistance welding machine for resistance welding of thermoplastic composite materials, wherein the resistance welding machine is powered by the power supply device for resistance welding of thermoplastic composite materials.

[0018] In this way, during the resistance welding process of the thermoplastic composite material resistance welding, it is convenient to obtain electricity, the operation is simple, and there is no danger of electricity use due to exposed lines, which greatly improves the safety performance in the resistance welding operation. In addition, through the regularly distributed through holes on the power supply board for positioning, the modular rapid installation design of the power supply board is realized, and the functional integration of the module installation positioning hole, the positive circuit output hole and the negative circuit output hole is realized.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] In this way, by setting the power supply device as a positive electrode-insulating layer-negative electrode stacked power transmission system, the risk of electric shock caused by the existing power supply device using a wiring harness for power supply is avoided, the wiring space inside the power supply board is saved, and the power supply device is more concise. By setting a connector assembly including a plug and a socket, the plug is provided with an output contact for output, and a positive contact and a negative contact are also provided inside the plug, and the socket is fixed on the positive electrode sheet. In this way, when the plug is inserted into the socket, the positive contact inside the plug is connected to the output contact, and the connector assembly is connected to the positive electrode sheet at this time, and the connector assembly behaves as connecting the positive pole of the circuit. On the contrary, when the plug is separated from the socket, the negative contact inside the plug is connected to the output contact, and the connector assembly is connected to the negative electrode sheet at this time, and the connector assembly behaves as connecting the negative pole of the circuit. Other modules (or components) in resistance welding can form a circuit by being connected to the connector assembly connecting the positive pole of the circuit and the connector assembly connecting the negative pole respectively. The connector assembly connecting the positive pole of the circuit and the connector assembly connecting the negative pole provide positive and negative power outputs for other modules (or components) in resistance welding. The functional integration of the module installation positioning hole, the positive circuit output hole and the negative circuit output hole is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The schematic diagram of a power supply device for resistance welding of thermoplastic composite materials according to the present invention.

[0022] Figure 2 The present invention is a schematic diagram of a power supply board in a power supply device for resistance welding of thermoplastic composite materials.

[0023] Figure 3 The present invention is a schematic diagram of a joint assembly in a power supply device for resistance welding of thermoplastic composite materials.

[0024] Figure 4 It is a cross-sectional view of the plug and the socket in the present invention being separated.

[0025] Figure 5 It is a cross-sectional view of the connection between the plug and the socket in the present invention.

[0026] Figure 6 The present invention is a cross-sectional view of a power supply device for resistance welding of thermoplastic composite materials in which a plug is connected to a negative electrode sheet.

[0027] Figure 7 The present invention is a cross-sectional view of a power supply device for resistance welding of thermoplastic composite materials in which a plug is connected to a positive electrode sheet.

[0028] In the figure: power supply board 10, negative electrode sheet 11, positive electrode sheet 12, insulating sheet 13, positioning plate 14, lower cover 15, plug 20, output ring 21, positive electrode rod 22, negative electrode ring 23, shell 24, conductive rod 25, negative electrode connector 26, positive electrode connector 27, insulating gasket 28, conductive spring 29, socket 30, limiter 31, positive electrode pin 32. DETAILED DESCRIPTION

[0029] The embodiment of the present invention discloses a power supply device for resistance welding of thermoplastic composite materials, see Figure 1 The power supply device includes a power supply board 10 and a connector assembly. Figure 2 The power supply board 10 includes a negative electrode sheet 11 and a positive electrode sheet 12, and the negative electrode sheet 11 and the positive electrode sheet 12 are separated by an insulating sheet 13. The connector assembly includes a plug 20 and a socket 30. Figure 3 , one end of the socket 30 is connected to the plug 20, and the other end is fixed to the positive electrode sheet 12 of the power supply board 10. The plug 20 is provided with an output contact for output, and a positive contact and a negative contact are also provided inside the plug 20. When the plug 20 is inserted into the socket 30, the positive contact can contact with the output contact, so that the plug 20 is connected to the positive electrode sheet 12. When the plug 20 is separated from the socket 30, the negative contact can be connected with the output contact, so that the plug 20 is connected to the negative electrode sheet 11.

[0030] For specific implementation, see Figure 2 , the negative electrode sheet 11, the insulating sheet 13 and the positive electrode sheet 12 of the power supply board 10 are provided with through holes distributed in a rectangular array, and the socket 30 is fixed in the through hole of the positive electrode sheet 12 of the power supply board 10. During implementation, since the negative electrode sheet 11 has a certain thickness, a cutting groove along the axial direction of the through hole is provided in the through hole of the negative electrode sheet 11 to increase the deformation capacity of the negative electrode sheet 11. Preferably, a cutting groove is provided every 90° on the through hole wall of the negative electrode sheet 11. In this way, it is convenient for the negative electrode connector 26 to be inserted into the through hole of the negative electrode sheet 11. More preferably, an annular protrusion is provided on the inner wall of the through hole of the negative electrode sheet 11, and the clamping of the negative electrode connector 26 is more stable in conjunction with the deformation of the through hole. By providing through holes neatly distributed in a rectangular array on the negative electrode sheet 11, the insulating sheet 13 and the positive electrode sheet 12, it is possible to provide a site for the positioning and rapid installation of other modules during the resistance welding of thermoplastic composite materials, making installation and positioning more convenient, and realizing modular rapid installation. Preferably, the power supply board 10 further includes a positioning plate 14 located above the negative electrode sheet 11 and a lower cover plate 15 located below the positive electrode sheet 12, and through holes distributed in a rectangular array are correspondingly opened on the positioning plate 14 and the lower cover plate 15. In this way, the power supply device is easier to locate and safer.

[0031] For specific implementation, see Figure 4 and Figure 5 The plug 20 includes a shell 24 and a conductive rod 25. The shell 24 is a cylindrical structure with one end closed, and the other end is connected to a ring-shaped negative electrode connector 26. The outer side of the negative electrode connector 26 extends to the outside of the shell 24 and its outer diameter is larger than the diameter of the through hole on the negative electrode sheet 11, so that when the negative electrode connector 26 is inserted, the negative electrode sheet 11 is forced to deform, thereby clamping the negative electrode connector 26, so that when the plug 20 is inserted into the through hole, the negative electrode connector 26 can contact and conduct with the negative electrode sheet 11.

[0032] An output ring 21 extending to the inside of the shell 24 is provided on the shell 24, and an output contact is formed on the inner side of the output ring 21. One end of the conductive rod 25 is connected to a handle, and the other end is connected to a positive electrode connector 27 after passing through the shell 24 and the negative electrode connector 26. A negative electrode ring 23 is sleeved on the conductive rod 25, and the outer side of the negative electrode ring 23 extends in the direction of the output ring 21 to form a negative electrode contact. In a specific implementation, the negative electrode ring 23 is fastened to the conductive rod 25. A conductive spring 29 is also sleeved on the conductive rod 25 between the negative electrode ring 23 and the negative electrode connector 26, and one end of the conductive spring 29 is connected to the negative electrode ring 23, and the other end is connected to the negative electrode connector 26. A positive electrode rod 22 is also provided on the plug rod along its radial direction, and the positive electrode rod 22 is located on the side of the negative electrode ring 23 away from the conductive spring 29, and the outer side of the positive electrode rod 22 extends in the direction of the output ring 21 to form a positive electrode contact. In a specific implementation, the positive electrode rod 22 is made of elastic conductive material. In this way, when the positive electrode connector 27 is connected to the positive electrode sheet 12, the positive contact of the positive electrode rod 22 can interact with the output contact of the output ring 21 to play a limiting role, so that the conductive rod 25 is fixed in this position. The conductive rod 25 is separated from the negative electrode connector 26, the negative electrode ring 23 and the conductive spring 29 by insulating materials. Preferably, an insulating gasket 28 is provided between the conductive rod 25 and the negative electrode connector 26, the electric rod and the negative electrode ring 23, and the conductive rod 25 and the conductive spring 29 to ensure insulation between the conductive rod 25 and the negative electrode connector 26, the negative electrode ring 23 and the conductive spring 29, thereby improving the safety performance of the device. When the conductive rod 25 moves along the axial direction of the shell 24, the negative electrode contact and the positive electrode contact can contact and communicate with the output contact respectively.

[0033] For details, see Figure 6 After the socket 30 is fixed to the through hole on the power supply board 10, when the plug 20 is inserted, the negative terminal 26, due to its outer diameter being larger than the shell 24, abuts against and communicates with the through hole on the negative electrode sheet 11. At this time, the conductive spring 29 is in a natural state. Under the action of the conductive spring 29, the negative contact of the negative electrode ring 23 contacts the output contact of the output ring 21. The positive terminal 27 has not yet reached the socket 30 and is separated from the socket 30. The negative electrode sheet 11 is connected to the output ring 21 through the conductive spring 29 and the negative electrode ring 23, so that the socket 30 behaves as a negative electrode. See Figure 7When the conductive rod 25 is pressed downward to insert the positive electrode connector 27 into the socket 30, the negative electrode ring 23 connected to the positive electrode rod also moves downward, so the negative electrode contact of the negative electrode ring 23 is disconnected from the output contact of the output ring 21. At this time, the positive electrode contact of the positive electrode rod 22 is in contact with the output contact of the output ring 21, and the positive electrode sheet 12 is connected to the output ring 21 through the positive electrode connector 27, the conductive rod 25 and the positive electrode sheet, so that the socket 30 behaves as a positive electrode. Conversely, when the plug 20 is switched from being a positive electrode to being a negative electrode, the conductive rod 25 is lifted up by the handle to separate the positive electrode connector 27 from the socket 30, and the conductive spring 29 changes from a compressed state to a natural state. The conductive spring 29 stretches upward to drive the negative electrode ring 23 to rise, thereby driving the conductive rod 25 fixed thereto to rise, so that the positive electrode contact is disconnected from the output contact, and the negative electrode contact is in contact with the output contact.

[0034] Preferably, the conductive rod 25, the output ring 21, the positive electrode rod 22, the negative electrode ring 23 and the negative electrode connector 26 are all made of conductive materials to enable current conduction and increase the reliability of the device. The housing 24 is an insulating housing 24, and the handle is an insulating handle, thus improving the safety of electricity use and reducing the risk of electricity use.

[0035] In a specific implementation, the socket 30 includes a stopper 31 and a positive electrode pin 32. The stopper 31 is provided with a stopper bayonet that matches the positive electrode connector 27. The positive electrode pin 32 extends away from the stopper 31 and can be fixedly engaged with a through hole on the positive electrode sheet 12, thereby increasing the reliability of the entire device.

[0036] By setting the power supply device as a positive electrode-insulating layer-negative electrode stacked power transmission system, the risk of electric shock caused by the existing power supply device using a wiring harness for power supply is avoided, the wiring space inside the power supply board is saved, and the power supply device is more concise. By setting a connector assembly including a plug and a socket, the plug is provided with an output contact for output, and a positive contact and a negative contact are also provided inside the plug, and the socket is fixed on the positive electrode sheet, so that when the plug is inserted into the socket, the positive contact inside the plug is connected to the output contact, and the connector assembly is connected to the positive electrode sheet at this time, and the connector assembly behaves as connecting the positive pole of the circuit. Conversely, when the plug is separated from the socket, the negative contact inside the plug is connected to the output contact, and the connector assembly is connected to the negative electrode sheet at this time, and the connector assembly behaves as connecting the negative pole of the circuit. Other modules (or components) in resistance welding can form a circuit by being connected to the connector assembly connecting the positive pole of the circuit and the connector assembly connecting the negative pole respectively. The connector assembly connecting the positive pole of the circuit and the connector assembly connecting the negative pole provide positive and negative power outputs for other modules (or components) in resistance welding. The functional integration of the module installation positioning hole, the positive circuit output hole and the negative circuit output hole is realized.

[0037] Since the power supply device is used to power the thermoplastic composite material resistance welding machine, it is convenient to take power during the resistance welding process, the operation is simple, and there is no danger of electricity use due to exposed lines, which greatly improves the safety performance in the resistance welding operation. At the same time, through the regularly distributed through holes on the power supply board for positioning, the modular and rapid installation and positioning of the power supply board is realized, which saves positioning time and improves efficiency.

[0038] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A power supply device for resistance welding of thermoplastic composite materials, characterized in that: The invention comprises a power supply board and a connector assembly; the power supply board comprises a negative electrode sheet and a positive electrode sheet, and the negative electrode sheet and the positive electrode sheet are separated by an insulating sheet; the connector assembly comprises a plug and a socket; one end of the socket is connected to the plug, and the other end is fixed to the positive electrode sheet of the power supply board; the plug is provided with an output contact for output, and a positive contact and a negative contact are also provided inside the plug; when the plug is inserted into the socket, the positive contact can contact with the output contact, so that the plug is connected to the positive electrode sheet; when the plug is separated from the socket, the negative contact can be connected with the output contact, so that the plug is connected to the negative electrode sheet; The plug comprises a shell and a conductive rod; the shell is a cylindrical structure with one end closed and the other end connected to a ring-shaped negative electrode connector; the outer side of the negative electrode connector extends to the outside of the shell and its outer diameter is larger than the diameter of the through hole on the negative electrode sheet; an output ring extending to the inside of the shell is provided on the shell, and an output contact is formed on the inner side of the output ring; a handle is connected to one end of the conductive rod, and the other end passes through the shell and the negative electrode connector and is connected to a positive electrode connector; a negative electrode ring is sleeved on the conductive rod, and the outer side of the negative electrode ring extends in the direction of the output ring to form a negative electrode contact; A conductive spring is also sleeved on the conductive rod between the negative electrode ring and the negative electrode connector, one end of the conductive spring is connected to the negative electrode ring, and the other end is connected to the negative electrode connector; a positive electrode rod is also provided on the insertion rod along its radial direction, the positive electrode rod is located on the side of the negative electrode ring away from the conductive spring, and the outer side of the positive electrode rod extends toward the output ring to form a positive electrode contact; the conductive rod and the negative electrode connector, the negative electrode ring and the conductive spring are separated by insulating materials; when the conductive rod moves along the axial direction of the shell, the negative electrode contact and the positive electrode contact can contact and connect with the output contact respectively.

2. The power supply device for resistance welding of thermoplastic composite materials according to claim 1, characterized in that: Through holes distributed in a rectangular array are correspondingly opened on the negative electrode sheet, the insulating sheet and the positive electrode sheet, and the socket is fixed in the through hole of the positive electrode sheet of the power supply board.

3. The power supply device for resistance welding of thermoplastic composite materials according to claim 2, characterized in that: The power supply plate also includes a positioning plate located above the negative electrode sheet and a lower cover plate located below the positive electrode sheet. The positioning plate and the lower cover plate are also provided with corresponding through holes distributed in a rectangular array.

4. The power supply device for resistance welding of thermoplastic composite materials according to claim 1, characterized in that: The conductive rod, output ring, positive electrode rod, negative electrode ring and negative electrode connector are all made of conductive materials.

5. The power supply device for resistance welding of thermoplastic composite materials according to claim 1, characterized in that: The positive electrode rod is made of elastic conductive material.

6. The power supply device for resistance welding of thermoplastic composite materials according to claim 1, characterized in that: The socket comprises a stopper and a positive electrode pin; the stopper is provided with a stopper bayonet matching the positive electrode connector; the positive electrode pin extends in a direction away from the stopper and can be fixedly engaged with a through hole on the positive electrode sheet.

7. The power supply device for resistance welding of thermoplastic composite materials according to claim 1, characterized in that: The shell is an insulating shell, and the handle is an insulating handle.

8. A resistance welding machine for resistance welding of thermoplastic composite materials, characterized in that: The resistance welding machine is powered by the power supply device for resistance welding of thermoplastic composite materials as described in any one of claims 1 to 7.

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