A hot air welding gun for plastic furniture

Abstract

The utility model provides a kind of hot air welding gun for plastic furniture, it includes: handle and end head, handle tail end is fixedly connected with back cover, handle inner wall is fixedly connected with connecting block, connecting block surface is fixedly connected with control switch, handle surface is also provided with button switch, end head is fixedly connected with handle end part. The hot air welding gun of handle and end head is used to carry out the welding operation of plastic furniture in the application, the opening of fan and heating element is realized by separate control operation, and the circuit intercommunication of heating element can be realized after starting fan, ensure that fan is opened preferentially before use to carry out heat conduction, avoid the problem that heat cannot be diffused and cause high temperature damage, and realize circuit control using internal airflow, improve operation convenience, after use, automatic power-off can be realized, at the same time, fan is used to dissipate residual heat, avoid scalding caused by high temperature, improve the use convenience of hot air welding gun.

Description

Technical Field

[0001] This utility model relates to a hot air welding gun for plastic furniture, belonging to the technical field of hot air welding guns. Background Technology

[0002] A hot air welding gun is a tool that uses a high-temperature airflow for welding or desoldering, widely used in electronics repair, plastic welding, shrink tubing processing, and other fields. It generates a high-temperature airflow (typically adjustable between 100℃ and 600℃) through an electric heating element, using the hot air to soften the solder or material surface, achieving welding or shaping. Some high-end models are equipped with digital temperature control and airflow adjustment functions. The hot air welding gun is a hot air welding tool that melts and bonds plastic welding rods and film surfaces by heating them. It is an ideal tool for the construction, localized welding, and repair of PP plastic sheet electroplating tanks, waterproof membranes, seepage-proof linings, and geomembranes. The hot air welding gun uses an advanced constant temperature control system, is lightweight and portable, small in size, powerful, and durable; its integrated design includes a built-in fan, simplifies on-site construction, and allows for the replacement of different nozzles.

[0003] Hot air welding guns are reliable and economical hand tools, mainly used for welding plastic materials. In the welding of plastic furniture, due to the large production volume and scale, hot air welding guns may need to be used for a long time. However, when the power of the hot air welding gun is turned off, its fan and heating element also turn off. At this time, the residual heat has not yet dissipated, and placing the hot air welding gun on the plastic furniture can easily cause melting problems, which is not conducive to the effective use of the hot air welding gun. In addition, the frequent turning on and off during use will cause inconvenience in operation, making the hot air welding gun inconvenient to use. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, this utility model provides a hot air welding gun for plastic furniture.

[0005] This utility model solves the above-mentioned technical problems through the following technical solutions:

[0006] This utility model provides a hot air welding gun for plastic furniture, comprising:

[0007] The grip has a rear cover fixedly connected to its tail end. The surface of the rear cover is provided with a power switch and an adjustment knob. A connecting block is fixedly connected to the inner wall of the grip. The connecting block is connected to a spoiler via a return spring, and the spoiler is rotatably connected to the inner wall of the grip. A control switch is fixedly connected to the surface of the connecting block. A button switch is also provided on the surface of the grip. The control switch and the button switch are electrically connected.

[0008] The end is fixedly connected to the end of the handle. A baffle is fixedly connected inside the end, and a cavity is formed between the outer side of the baffle and the end. A nozzle is fixedly connected to the end of the end away from the handle, and an outer cover tube is fixedly connected to the surface of the nozzle.

[0009] In this technical solution, a fan is fixedly installed inside the handle by a bracket, and the fan is electrically connected to a power switch.

[0010] In this technical solution, the back cover is provided with a number of evenly distributed fine holes, and a wiring hole is fixedly connected to the middle of the back cover.

[0011] In this technical solution, a wiring groove is fixedly connected to the inner wall of the handle, and a wiring hole for wire connection is opened on the side wall of the wiring groove.

[0012] In this technical solution, the control switch is electrically connected to the controller of the adjustment knob.

[0013] In this technical solution, a grid mesh is fixedly connected inside the handle, and the grid mesh is correspondingly arranged on one side of the fan.

[0014] In this technical solution, a heating element is fixedly connected to the inner wall of the enclosure. The heating element is located on one side of the grid mesh and is electrically connected to a push-button switch and a control switch, respectively.

[0015] In this technical solution, the spoiler has a bent structure and is correspondingly disposed on the side of the control switch.

[0016] In this technical solution, the push button switch consists of a spring-loaded lever, one end of which is connected to a metal block that contacts a conductor. Both the conductor and the metal block are connected to an electrical wire, and the push button switch and the control switch have the same structure.

[0017] In this technical solution, the length of the nozzle is greater than the length of the outer cover tube, the nozzle end is provided with an outward protrusion, and the outer cover tube end is provided with an inward protrusion.

[0018] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0019] The positive and progressive effects of this utility model are as follows:

[0020] The aforementioned hot air welding gun for plastic furniture uses a handle and a nozzle to perform welding operations on plastic furniture. Operation is achieved by separately controlling the fan and heating element. The heating element's circuit is only connected after the fan is started, ensuring that the fan is turned on first to conduct heat before use, preventing high-temperature damage caused by insufficient heat dissipation. Furthermore, the internal airflow is used for circuit control, improving operational convenience. After use, it automatically shuts off, allowing the fan to dissipate residual heat, preventing burns from high temperatures and further enhancing the ease of use of the hot air welding gun. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the half-section structure of this utility model.

[0023] Figure 3 This is a partial three-dimensional structural diagram of the connecting block of this utility model.

[0024] Explanation of reference numerals in the attached figures

[0025] 1. Handle; 2. End; 3. Rear cover; 4. Power switch; 5. Adjustment knob; 6. Wiring hole; 7. Wiring channel; 8. Wiring hole; 9. Fan; 10. Connecting block; 11. Control switch; 12. Spoiler; 13. Return spring; 14. Push button switch; 15. Grille; 16. Enclosure; 17. Heating element; 18. Cavity; 19. Nozzle; 20. Outer protrusion; 21. Outer casing tube; 22. Inner protrusion. Detailed Implementation

[0026] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0027] like Figure 1-3 As shown, the hot air welding gun for plastic furniture includes:

[0028] A handle 1 is provided, and a rear cover 3 is fixedly connected to the end of the handle 1. A power switch 4 and an adjustment knob 5 are respectively provided on the surface of the rear cover 3. A connecting block 10 is fixedly connected to the inner wall of the handle 1. The connecting block 10 is connected to the spoiler 12 through a return spring 13, and the spoiler 12 is rotatably connected to the inner wall of the handle 1. A control switch 11 is fixedly connected to the surface of the connecting block 10. A button switch 14 is also provided on the surface of the handle 1. The control switch 11 and the button switch 14 are electrically connected.

[0029] End 2 is fixedly connected to the end of handle 1. A baffle 16 is fixedly connected inside end 2, and a cavity 18 is formed between the outer side of the baffle 16 and end 2. A nozzle 19 is fixedly connected to the end of end 2 away from handle 1, and an outer cover tube 21 is fixedly connected to the surface of nozzle 19. The baffle 16 can be used for the installation of heating element 17, and the cavity 18 can reduce heat conduction and avoid high temperature burns when holding.

[0030] A fan 9 is fixedly installed inside the handle 1 by a bracket, and the fan 9 is electrically connected to the power switch 4; the back cover 3 has several evenly distributed fine holes, and a wiring hole 6 is fixedly connected to the middle of the back cover 3; a wiring groove 7 is fixedly connected to the inner wall of the handle 1, and a wiring hole 8 for wire connection is opened on the side wall of the wiring groove 7.

[0031] The control switch 11 is electrically connected to the controller of the adjustment knob 5; a grid 15 is fixedly connected inside the handle 1, and the grid 15 is correspondingly arranged on one side of the fan 9; a heating element 17 is fixedly connected to the inner wall of the enclosure 16, and the heating element 17 is arranged on one side of the grid 15, and the heating element 17 is electrically connected to the button switch 14 and the control switch 11 respectively.

[0032] In this technical solution, the adjustment knob 5 is used to adjust the resistance of the heating element 17 to achieve temperature control, the grid mesh 15 is set to block foreign objects that may damage the heating element 17, and at the same time achieve uniform airflow, and the push-button switch 14 is used to connect the circuit between the control switch 11 and the heating element 17 for convenient control.

[0033] Specifically, when in use, turning on the power switch 4 connects the circuits connecting the fan 9 and the heater respectively. At this time, the fan 9 starts, while the circuits of the push-button switch 14 and the control switch 11 are not connected, so the fan 9 is turned on first.

[0034] Furthermore, after the fan 9 is turned on, the airflow enters from the back cover 3, and the airflow passes through the handle 1 and the inside of the end 2. When the airflow passes through the spoiler 12, it overcomes the elasticity of the return spring 13 and contacts the control switch 11, so that the control switch 11 connects the circuit. At this time, the button switch 14 is not connected, so the heating element 17 can only be turned on after the fan 9 is started.

[0035] Furthermore, when the heater is finished using the product, releasing the button switch 14 will turn off the power to the heater. At this time, the fan 9 will continue to work to expel the residual heat generated by the heater. Then, the power switch 4 will be turned off. The time difference between releasing the button switch 14 and turning off the power switch 4 will be used to reduce the residual heat as much as possible, so as to avoid the problem of burns or damage to plastic furniture caused by excessive temperature.

[0036] The spoiler 12 has a bent structure and is correspondingly arranged on one side of the control switch 11; the push-button switch 14 consists of a spring-loaded lever, one end of which is connected to a metal block in contact with a conductor. Both the conductor and the metal block are connected to wires, and the push-button switch 14 and the control switch 11 have the same structure; the length of the nozzle 19 is greater than the length of the outer casing tube 21, the end of the nozzle 19 is provided with an outer protrusion 20, and the end of the outer casing tube 21 is provided with an inner protrusion 22.

[0037] In this technical solution, during operation, the operator holds the handle 1 and presses the lever on the button switch 14 with their thumb. At this time, the lever overcomes the elasticity of the spring and drives the conductor and the metal block to contact each other. The wires connecting the conductor and the metal block realize the circuit connection, thereby realizing convenient control. When installing welding nozzles with different structures on the nozzle 19, the setting of the outer protrusion 20 and the inner protrusion 22 can facilitate the locking of the welding nozzles and ensure the stability of the installation.

[0038] This utility model is not limited to the above-described embodiments. Any changes in its shape or structure fall within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A hot-air welding gun for plastic furniture, characterized by comprising: include: A handle (1) is fixedly connected to a rear cover (3) at the end of the handle (1). A power switch (4) and an adjustment knob (5) are respectively provided on the surface of the rear cover (3). A connecting block (10) is fixedly connected to the inner wall of the handle (1). The connecting block (10) is connected to the spoiler (12) through a return spring (13). The spoiler (12) is rotatably connected to the inner wall of the handle (1). A control switch (11) is fixedly connected to the surface of the connecting block (10). A button switch (14) is also provided on the surface of the handle (1). The control switch (11) and the button switch (14) are electrically connected. End (2), the end (2) is fixedly connected to the end of the handle (1), a baffle (16) is fixedly connected inside the end (2), and a cavity (18) is formed between the outer side of the baffle (16) and the end (2). A nozzle (19) is fixedly connected to the end of the end (2) away from the handle (1), and an outer cover tube (21) is fixedly connected to the surface of the nozzle (19).

2. The hot-air welding gun for plastic furniture according to claim 1, characterized in that: A fan (9) is fixedly installed inside the handle (1) by a bracket, and the fan (9) is electrically connected to the power switch (4).

3. The hot air welding gun for plastic furniture as described in claim 1, characterized in that: The rear cover (3) is provided with several evenly distributed fine holes, and a wiring hole (6) is fixedly connected to the middle of the rear cover (3).

4. The hot air welding gun for plastic furniture as described in claim 1, characterized in that: The inner wall of the handle (1) is fixedly connected to a wiring groove (7), and the side wall of the wiring groove (7) is provided with a wiring hole (8) for wire connection.

5. The hot air welding gun for plastic furniture as described in claim 1, characterized in that: The control switch (11) is electrically connected to the controller of the adjustment knob (5).

6. The hot air welding gun for plastic furniture as described in claim 1, characterized in that: A grid mesh (15) is fixedly connected inside the handle (1), and the grid mesh (15) is correspondingly arranged on one side of the fan (9).

7. The hot air welding gun for plastic furniture as described in claim 1, characterized in that: A heating element (17) is fixedly connected to the inner wall of the enclosure (16). The heating element (17) is located on one side of the grid (15). The heating element (17) is electrically connected to the push button switch (14) and the control switch (11) respectively.

8. The hot air welding gun for plastic furniture as described in claim 1, characterized in that: The spoiler (12) has a bent structure and is disposed on one side of the control switch (11).

9. The hot air welding torch for plastic furniture as described in claim 1, characterized in that: The push button switch (14) consists of a spring-loaded lever. One end of the lever is connected to a metal block that is in contact with a conductor. Both the conductor and the metal block are connected to an electric wire. The push button switch (14) and the control switch (11) have the same structure.

10. The hot air welding gun for plastic furniture as described in claim 1, characterized in that: The length of the nozzle (19) is greater than the length of the outer cover tube (21). The nozzle (19) has an outer protrusion (20) at its end, and the outer cover tube (21) has an inner protrusion (22) at its end.

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