A quick-release welding nozzle for plastic welding

Abstract

This utility model discloses a rapid welding nozzle for plastic welding, comprising a plastic welding gun and a quick-cut welding nozzle. The plastic welding gun has a handle, with an electric heating head fixed to the front end. A bracket surrounds the heating head, and solder is housed within the bracket. A control trigger is mounted on the inside of the handle, and a power connector is located at the rear end for connecting to a power source. The heating head contains a heating wire for heating. The quick-cut welding nozzle includes a servo motor connected to a drive shaft via a coupling. The drive shaft's outer ring is connected in a circular array with beveled, round, flat, and conical welding nozzles via connecting rods. Each nozzle has a solder inlet on its outer wall and is hollow inside. The servo motor's sidewall is connected to the bracket via a fixing block. A control button on the inside of the welding gun handle controls the forward and reverse rotation of the servo motor. During use, the servo motor can be rotated using the control button according to welding requirements, driving different welding nozzles to engage with the electric heating head, achieving rapid switching and improving welding efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of welding nozzle technology, specifically to a fast welding nozzle for plastic welding. Background Technology

[0002] In the field of plastic product processing and repair, plastic welding is a crucial process, widely used in plastic pipe connections, plastic container repairs, and plastic component assembly. Traditional plastic welding torches present several significant problems during the welding process. Traditional welding torches are typically equipped with a single-shaped nozzle; however, in actual welding operations, different welding locations and requirements often necessitate different nozzle shapes. For example, when welding narrow bends in plastic pipes, an angled nozzle better fits the angle, concentrating heat on the welding area; while when welding large plastic surfaces, a flat nozzle distributes heat more evenly, ensuring a smooth weld. Traditional welding torches cannot meet these diverse nozzle requirements, forcing operators to frequently change torches or use different tools, increasing operational difficulty and significantly reducing welding efficiency. Furthermore, changing nozzles with traditional torches is cumbersome. Replacing a nozzle requires stopping the machine, disassembling the old nozzle, and installing the new one, a time-consuming process. Therefore, developing a quick-connect welding nozzle for plastic welding that can rapidly switch between different shapes and is easy to operate is of great practical significance. Utility Model Content

[0003] The purpose of this utility model is to provide a technical solution for a rapid welding nozzle for plastic welding, thereby overcoming the shortcomings mentioned in the background art. To address the drawbacks and defects described in the background art, this technical solution includes the following: The device includes a plastic welding gun, with a quick-cut welding nozzle on the front welding end of the plastic welding gun; the plastic welding gun includes a welding gun handle, an electric heating head fixedly connected to the front end of the welding gun handle, and a control trigger installed on the inner side wall of the welding gun handle, and a bracket fixedly connected to the outer ring of the electric heating head, with a piece of welding material inside the bracket. The quick-cut welding nozzle includes a servo motor, a transmission shaft connected to the output shaft of the servo motor via a coupling, and beveled welding nozzles, round welding nozzles, flat welding nozzles, and conical welding nozzles arranged in a ring array around the outer ring of the transmission shaft. Each of the beveled welding nozzles, round welding nozzles, flat welding nozzles, and conical welding nozzles has a solder inlet on its outer sidewall for inserting the front end of the solder.

[0004] As a preferred embodiment of this utility model: a power supply terminal is fixedly connected to the rear end of the welding torch handle, and a power plug is connected to the end of the power supply terminal.

[0005] As a preferred embodiment of this utility model: a plurality of electric heating wires are fixedly connected in the inner cavity of the electric heating head, which are used to heat the electric heating head and transmit the heat to the beveled welding nozzle, the round welding nozzle, the flat welding nozzle and the conical welding nozzle, thereby heating and melting the solder.

[0006] As a preferred embodiment of this utility model: a fixing block is fixedly connected to the side wall of the servo motor, and the side wall of the fixing block away from the servo motor is fixedly connected to the side wall of the bracket.

[0007] As a preferred embodiment of this utility model: the rear ends of the beveled welding nozzle, round welding nozzle, flat welding nozzle and conical welding nozzle are all flush with the front end of the electric heating head, so that after the servo motor rotates 90°, the beveled welding nozzle, round welding nozzle, flat welding nozzle and conical welding nozzle are sequentially connected to the electric heating head.

[0008] As a preferred embodiment of this utility model: the interiors of the beveled welding nozzle, the round welding nozzle, the flat welding nozzle, and the conical welding nozzle are all hollow, so that the molten solder can flow out from their respective front ends.

[0009] As a preferred embodiment of this utility model: four connecting rods are fixedly connected in a ring array on the outer surface of the transmission shaft. The ends of the connecting rods away from the transmission shaft are respectively fixedly connected to the inner surface of the outer ring of the oblique welding nozzle, the round welding nozzle, the flat welding nozzle and the conical welding nozzle.

[0010] As a preferred embodiment of this utility model: a control button for controlling the forward and reverse rotation of the servo motor is provided on the inner surface of the welding torch handle.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows: The quick-change welding nozzle is equipped with various nozzle shapes, such as beveled, round, flat, and conical nozzles. A servo motor drives the transmission shaft to rotate, allowing for rapid nozzle switching to meet the needs of different welding scenarios and improve welding flexibility and efficiency. The electric heating head contains a heating wire that effectively transfers heat to the nozzle, rapidly melting the solder and ensuring smooth welding. The nozzle is hollow with a solder inlet for easy solder delivery and outflow after melting. Simultaneously, nozzle switching is achieved by controlling the servo motor's forward and reverse rotation via a control button, simplifying operation and improving the overall quality and efficiency of plastic welding while reducing operational difficulty. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 A schematic diagram of the overall structure of a plastic welding gun; Figure 2 This is a schematic diagram of a welding torch. Figure 3 This is a schematic diagram of a quick-cut welding nozzle.

[0014] Explanation of reference numerals in the attached figures: 1. Plastic welding gun parts; 11. Welding gun handle; 12. Power supply terminal; 13. Control trigger; 14. Solder; 15. Support; 16. Electric heating head; 2. Quick-cut welding nozzle parts; 21. Servo stepper motor; 22. Fixing block; 23. Drive shaft; 24. Solder inlet; 25. Angled welding nozzle; 26. Round welding nozzle; 27. Flat welding nozzle; 28. Connecting rod; 29. ​​Conical welding nozzle. Detailed Implementation

[0015] To provide a clearer explanation and illustration of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below. The following description is merely exemplary and not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically illustrate the concept and principles of the embodiments of this disclosure and do not necessarily show the specific dimensions and scale of each embodiment. Specific parts in particular drawings may be exaggerated to illustrate relevant details or structures of the embodiments of this disclosure. The disclosures of various publications, patents, and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solution of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0016] Example 1: This example provides a specific usage method for a rapid welding nozzle for plastic welding. The rapid welding nozzle mainly consists of a plastic welding gun component 1 and a quick-cut welding nozzle component 2. In the plastic welding gun component 1, the welding gun handle 11 serves as the handheld operating part, with a power supply end 12 fixedly connected to its rear end. A power plug is connected to the end of the power supply end 12; during use, the power plug is inserted into a suitable power socket to supply power to the entire welding gun. An electric heating head 16 is fixedly connected to the front end of the welding gun handle 11. Several electric heating wires are fixedly connected to the inner cavity of the electric heating head 16; after the power is turned on, the electric heating wires begin to heat up. A control trigger 13 is installed on the inner side wall of the welding gun handle 11; the operator controls the working state of the electric heating head 16 by pressing the control trigger 13. A bracket 15 is fixedly connected to the outer ring of the electric heating head 16, and a piece of solder 14 is sleeved inside the bracket 15.

[0017] In the quick-cut welding nozzle assembly 2, a fixing block 22 is fixedly connected to the side wall of the servo motor 21. The side wall of the fixing block 22 away from the servo motor 21 is fixedly connected to the side wall of the bracket 15, thus securely mounting the servo motor 21 on the bracket 15. The output shaft of the servo motor 21 is connected to the drive shaft 23 via a coupling. Four connecting rods 28 are fixedly connected in a ring array on the outer surface of the drive shaft 23. The ends of the connecting rods 28 away from the drive shaft 23 are fixedly connected to the inner surfaces of the outer rings of the beveled welding nozzle 25, the round-headed welding nozzle 26, the flat-headed welding nozzle 27, and the conical-headed welding nozzle 29, respectively, so that these four types of welding nozzles are connected in a ring array around the outer ring of the drive shaft 23. The outer side walls of the beveled welding nozzle 25, the round-headed welding nozzle 26, the flat-headed welding nozzle 27, and the conical-headed welding nozzle 29 are all provided with solder inlets 24, through which the front end of the solder 14 can be fed and inserted. The interiors of these four types of welding nozzles are all hollow, allowing the molten solder 14 to flow out from their respective front end nozzles. The rear ends of the beveled welding nozzle 25, the round-headed welding nozzle 26, the flat-headed welding nozzle 27, and the conical welding nozzle 29 are all flush with the front end of the electric heating head 16.

[0018] In actual welding operations, the operator holds the welding torch handle 11 and plugs the power plug into the power socket. Depending on the welding requirements, if a beveled welding nozzle 25 is needed, the nozzle 25 connects with the heating head 16. The heat generated by the heating wire is transferred to the heating head 16, and then to the beveled welding nozzle 25. Simultaneously, the tip of the solder 14 is inserted into the solder inlet 24 of the beveled welding nozzle 25. Under the influence of heat, the solder 14 melts and flows out from the tip of the beveled welding nozzle 25. The operator presses the control trigger 13 to control the amount of solder flowing out and perform the welding operation.

[0019] Example 2: Based on Example 1, when the welding nozzle type needs to be changed during the welding process, for example, from the beveled nozzle 25 to the round nozzle 26. The inner surface of the welding torch handle 11 is equipped with a control button for controlling the forward and reverse rotation of the servo motor 21. The operator presses the control button to rotate the servo motor 21 by 90°. Since the drive shaft 23 is connected to the output shaft of the servo motor 21 via a coupling, the drive shaft 23 rotates 90°, causing the connecting rod 28 and the round nozzle 26 fixed on the connecting rod 28 to rotate 90°, thus aligning the round nozzle 26 with the electric heating head 16. At this time, the heat from the electric heating head 16 is transferred to the round nozzle 26, and the tip of the solder 14 is inserted into the solder inlet 24 of the round nozzle 26. The solder 14 is heated and melted inside the round nozzle 26 and flows out from the tip of the round nozzle 26, allowing the operator to perform welding operations using the round nozzle 26.

[0020] Example 3: If it is necessary to change the welding nozzle type again during the welding process, for example, from the round nozzle 26 to the flat nozzle 27, the operator presses the control button on the inner surface of the welding torch handle 11 again, controlling the servo motor 21 to continue rotating 90°. The drive shaft 23 drives the connecting rod 28 and the flat nozzle 27 to rotate 90°, so that the flat nozzle 27 aligns with the electric heating head 16. The heat from the electric heating head 16 is transferred to the flat nozzle 27, and the tip of the solder 14 is inserted into the solder inlet 24 of the flat nozzle 27. The solder 14 is heated and melted inside the flat nozzle 27 and flows out from the tip of the flat nozzle 27. The operator then uses the flat nozzle 27 to perform welding.

[0021] Example 4: When welding is required using the conical welding nozzle 29, the operator presses the control button, causing the servo motor 21 to rotate 90° again. The drive shaft 23 drives the connecting rod 28 and the conical welding nozzle 29 to rotate 90°, aligning the conical welding nozzle 29 with the electric heating head 16. The heat from the electric heating head 16 is transferred to the conical welding nozzle 29, and the tip of the solder 14 is inserted into the solder inlet 24 of the conical welding nozzle 29. The solder 14 is heated and melted inside the conical welding nozzle 29 and flows out from the tip of the conical welding nozzle 29. The operator then uses the conical welding nozzle 29 to complete the welding operation. Throughout the welding process, the operator can quickly switch between different types of welding nozzles by controlling the rotation of the servo motor 21 according to different welding needs, thereby improving welding efficiency.

[0022] Based on the above preferred technical solution, the workflow of this technical solution is described as follows: The operator first inserts the power plug at the end of the power terminal 12 on the rear handle 11 of the plastic welding gun 1 into a suitable power socket. After the power is turned on, several heating wires in the inner cavity of the heating head 16 begin to heat up, and the heat is gradually transferred to the entire heating head 16. At this time, a suitable welding nozzle is selected according to the welding requirements. If the bevel welding nozzle 25 is selected initially, since the rear ends of the bevel welding nozzle 25, the round welding nozzle 26, the flat welding nozzle 27, and the conical welding nozzle 29 are all flush with the front end of the heating head 16, the bevel welding nozzle 25 is connected to the heating head 16 in the initial state, and the heat of the heating head 16 is transferred to the bevel welding nozzle 25. The operator inserts solder 14 into the bracket 15. The front end of solder 14 is fed into the solder inlet 24 on the outer side wall of the angled welding nozzle 25. Under the heat transferred by the electric heating head 16, the solder 14 gradually melts. The melted solder 14 flows within the hollow space inside the angled welding nozzle 25 and finally flows out from the front end of the angled welding nozzle 25. The operator holds the welding gun handle 11 and presses the control trigger 13 on the inner side wall of the welding gun handle 11. By controlling the control trigger 13, the operator controls the working state of the electric heating head 16, thereby controlling the flow rate of solder 14, and begins the welding operation.

[0023] When it is necessary to change the type of welding nozzle during the welding process, for example, from the beveled welding nozzle 25 to the round-headed welding nozzle 26, the operator presses the control button on the inner surface of the welding torch handle 11 to control the forward and reverse rotation of the servo motor 21, controlling the servo motor 21 to rotate 90°. The output shaft of the servo motor 21 drives the transmission shaft 23 to rotate 90° through the coupling. The four connecting rods 28, which are fixedly connected in a ring array on the outer surface of the transmission shaft 23, rotate accordingly. The end of the connecting rod 28 away from the transmission shaft 23 is fixedly connected to the inner surface of the outer ring of the beveled welding nozzle 25, the round-headed welding nozzle 26, the flat-headed welding nozzle 27, and the conical welding nozzle 29, respectively, thereby driving the round-headed welding nozzle 26 to rotate 90°, so that the round-headed welding nozzle 26 docks with the electric heating head 16. At this time, the heat from the electric heating head 16 is transferred to the round-head welding nozzle 26. The front end of the solder 14 is inserted into the solder inlet 24 on the outer side wall of the round-head welding nozzle 26. The solder 14 is heated and melted inside the round-head welding nozzle 26 and flows out from the front end of the round-head welding nozzle 26. The operator continues to press the control trigger 13 to control the flow rate of the solder 14 and uses the round-head welding nozzle 26 to perform welding operations. If the welding nozzle type needs to be changed later, such as from the round welding nozzle 26 to the flat welding nozzle 27, the operator presses the control button again to control the servo motor 21 to continue rotating 90°. The transmission shaft 23 drives the connecting rod 28 and the flat welding nozzle 27 to rotate 90°, so that the flat welding nozzle 27 is connected to the electric heating head 16. The heat of the electric heating head 16 is transferred to the flat welding nozzle 27. The front end of the solder 14 is inserted into the solder inlet 24 on the outer side wall of the flat welding nozzle 27. The solder 14 is heated and melted in the flat welding nozzle 27 and flows out from the front end of the flat welding nozzle 27. The operator uses the flat welding nozzle 27 to perform welding. When the conical welding nozzle 29 is needed, the operator presses the control button, causing the servo motor 21 to rotate 90° again. The drive shaft 23 drives the connecting rod 28 and the conical welding nozzle 29 to rotate 90°, aligning the conical welding nozzle 29 with the electric heating head 16. The heat from the electric heating head 16 is transferred to the conical welding nozzle 29. The tip of the solder 14 is inserted into the solder inlet 24 on the outer sidewall of the conical welding nozzle 29. The solder 14 is heated and melted inside the conical welding nozzle 29 and flows out from the tip of the conical welding nozzle 29. The operator then uses the conical welding nozzle 29 to complete the welding operation. Throughout the welding process, the operator can quickly switch between different types of welding nozzles by controlling the rotation of the servo motor 21 to meet diverse welding requirements.

[0024] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rapid welding nozzle for plastic welding, comprising a plastic welding gun (1), characterized in that: The plastic welding gun (1) is provided with a quick-cut welding nozzle (2) on the front welding end. The plastic welding gun component (1) includes a welding gun handle (11), an electric heating head (16) fixedly connected to the front end of the welding gun handle (11), and a control trigger (13) installed on the inner side wall of the welding gun handle (11). A bracket (15) is fixedly connected to the outer ring of the electric heating head (16), and a welding rod (14) is sleeved inside the bracket (15). The quick-cut welding nozzle (2) includes a servo motor (21), a transmission shaft (23) connected to the output shaft of the servo motor (21) via a coupling, and a beveled welding nozzle (25), a round-headed welding nozzle (26), a flat-headed welding nozzle (27), and a conical welding nozzle (29) arranged in a ring array around the outer ring of the transmission shaft (23). The beveled welding nozzle (25), the round-headed welding nozzle (26), the flat-headed welding nozzle (27), and the conical welding nozzle (29) are all provided with a solder inlet (24) for the front end of the solder (14) to be fed and inserted.

2. A rapid welding tip for plastic welding according to claim 1, characterized in that: A power supply terminal (12) is fixedly connected to the rear end of the welding torch handle (11), and a power plug is connected to the end of the power supply terminal (12).

3. A quick welding tip for plastic welding according to claim 1, characterized in that: Several electric heating wires are fixedly connected in the inner cavity of the electric heating head (16) to heat the electric heating head (16) and transmit the heat to the beveled welding nozzle (25), round welding nozzle (26), flat welding nozzle (27) and conical welding nozzle (29), thereby heating and melting the solder (14).

4. The rapid welding tip for plastic welding according to claim 1, characterized in that: A fixing block (22) is fixedly connected to the side wall of the servo motor (21), and the side wall of the fixing block (22) away from the servo motor (21) is fixedly connected to the side wall of the bracket (15).

5. A rapid welding tip for plastic welding according to claim 1, characterized in that: The rear ends of the beveled welding nozzle (25), round welding nozzle (26), flat welding nozzle (27), and conical welding nozzle (29) are all flush with the front end of the electric heating head (16), so that after the servo motor (21) rotates 90°, the beveled welding nozzle (25), round welding nozzle (26), flat welding nozzle (27), and conical welding nozzle (29) are sequentially connected to the electric heating head (16).

6. A rapid welding tip for plastic welding according to claim 1, characterized in that: The interiors of the beveled welding nozzle (25), round welding nozzle (26), flat welding nozzle (27) and conical welding nozzle (29) are all hollow, so that the molten solder (14) can flow out from their respective front end nozzles.

7. The rapid welding nozzle for plastic welding according to claim 1, characterized in that: Four connecting rods (28) are fixedly connected in a ring array on the outer ring surface of the drive shaft (23). The end of the connecting rod (28) away from the drive shaft (23) is fixedly connected to the inner surface of the outer ring of the oblique welding nozzle (25), the round welding nozzle (26), the flat welding nozzle (27), and the conical welding nozzle (29).

8. A rapid welding tip for plastic welding according to claim 1, characterized in that: The inner surface of the welding torch handle (11) is provided with a control button for controlling the forward and reverse rotation of the servo motor (21).

Images