Hand-held ultrasonic welding gun

Abstract

The utility model relates to ultrasonic welding equipment technical field discloses a handheld ultrasonic welding gun. The handheld ultrasonic welding gun includes the shell, the upper end part of shell is the gun head, and its lower end part is handheld part, the transducer is installed in the gun head, and one end of transducer is connected with the welding head, and the free end of welding head extends to the outside of gun head, the trigger is movably installed in handheld part, and the top end of trigger is connected with the load connecting piece, and the trigger below is equipped with the microswitch, and the elastic contact piece on microswitch abuts on the board machine, the other end of load connecting piece away from trigger extends to the outside of gun head and sets up correspondingly with welding head, the battery is installed in handheld part. The handheld ultrasonic welding gun is the gun type shape of integral type structure, is convenient for handheld mobile operation, and increases its applicability, effectively solves the problem that the traditional split type ultrasonic welding equipment is inconvenient for welding on the harness of scattered articles or large objects, guide belt.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic welding equipment technology, specifically a handheld ultrasonic welding gun. Background Technology

[0002] In the field of power ultrasound, the piezoelectric effect is frequently used for welding various types of guide belts or straps. The method involves converting high-frequency electrical energy into mechanical vibration via a transducer, and then transmitting the ultrasonic energy to the welding area through the upper welding component. Due to the high acoustic impedance at the welding interface, localized high temperatures are generated. Since most straps and guide belts are made of materials with poor thermal conductivity, such as plastics, heat cannot dissipate quickly, causing the contact surface of the two straps to melt rapidly. With the application of pressure, the two welded components fuse together. After the ultrasonic waves cease, the pressure is maintained for a short holding time to allow solidification, forming a strong molecular chain and achieving the welding purpose. The weld strength can approach the strength of the original material.

[0003] In existing technologies, equipment used for welding straps or guide belts is mostly a separate structure consisting of a welding torch, transducer, and power supply. This separate structure makes the equipment relatively large and inconvenient for mobile operations, primarily used in assembly line settings. It cannot effectively accommodate welding of loose items or large objects outside the assembly line for strap or guide belt operations.

[0004] Therefore, there is an urgent need for a handheld ultrasonic welding gun to solve the above problems. Utility Model Content

[0005] Based on the above, the purpose of this utility model is to provide a handheld ultrasonic welding gun to solve the problem that traditional ultrasonic welding equipment is not convenient for welding straps and guide strips on loose items or large objects.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model provides a handheld ultrasonic welding gun, comprising:

[0008] The outer casing has an upper part divided into a gun head and a lower part divided into a handheld part.

[0009] A transducer is installed inside the gun head, one end of which is connected to a welding head, and the free end of the welding head extends to the outside of the gun head.

[0010] A trigger is movably mounted on the handheld part. A load connecting piece is connected to the top of the trigger. A micro switch is provided below the trigger, and an elastic contact piece on the micro switch abuts against the trigger. The other end of the load connecting piece, away from the trigger, extends to the outside of the gun head and is correspondingly arranged with the welding head.

[0011] A battery is installed inside the handheld part and is electrically connected to the micro switch and the transducer.

[0012] As an optional technical solution for a handheld ultrasonic welding gun, a guide rod is provided on the free end of the load connecting piece, a gasket is installed at one end of the guide rod near the welding head, and a nut is connected to the other end; a spring is sleeved on the guide rod between the gasket and the load connecting piece.

[0013] As an optional technical solution for a handheld ultrasonic welding gun, the gun head is equipped with an electronic control board, and the electronic control board, transducer and battery are electrically connected.

[0014] As an optional technical solution for handheld ultrasonic welding guns, an adjuster is connected to the electronic control board, with one end of the adjuster extending to the outside of the gun head.

[0015] As an optional technical solution for handheld ultrasonic welding guns, the trigger is provided with limiting blocks on both the left and right sides, and the gun head is provided with limiting grooves that match the limiting blocks.

[0016] As an optional technical solution for a handheld ultrasonic welding gun, the trigger extends to one end face outside the handheld part in an arc shape, and the handheld part is provided with an arc-shaped recess that matches the trigger.

[0017] As an optional technical solution for a handheld ultrasonic welding gun, the welding head has a "V" shaped structure.

[0018] As an optional technical solution for a handheld ultrasonic welding gun, the bottom of the handheld part is open, and a battery compartment is formed inside, with the battery being detachably snapped into the battery compartment.

[0019] As an optional technical solution for a handheld ultrasonic welding gun, the gun head is provided with heat dissipation holes.

[0020] The beneficial effects of this utility model are as follows:

[0021] This utility model provides a handheld ultrasonic welding gun, including a shell, the upper end of which is divided into a gun head, and the lower end of which is divided into a handheld part; a transducer is installed inside the gun head, one end of which is connected to a welding head, and the free end of the welding head extends to the outside of the gun head; a trigger is movably installed in the handheld part, the top of the trigger is connected to a load connecting piece, a micro switch is provided below the trigger, and the elastic contact piece on the micro switch abuts against the trigger; the other end of the load connecting piece away from the trigger extends to the outside of the gun head and is correspondingly arranged with the welding head; a battery is installed inside the handheld part.

[0022] In the above structure, during welding operations, the handheld ultrasonic welding gun is held by the handgrip, with the two welding ends of the strap or guide strip placed between the load connecting plate and the welding head. Pulling the trigger moves the load connecting plate towards the welding head, causing the two welding ends of the strap or guide strip to press together between the load connecting plate and the welding head. Since the elastic contact of the microswitch abuts against the trigger, when the trigger is pulled to the target stroke, the elastic contact activates the microswitch to close, energizing the transducer and starting the welding connection between the welding head and the load connecting plate. After welding, releasing the trigger allows the load connecting plate to reset under the action of the elastic contact, thus completing the welding operation. This handheld ultrasonic welding gun has an integrated gun-shaped structure, facilitating handheld movement and increasing its applicability. It effectively solves the problem that traditional split-type ultrasonic welding equipment is inconvenient for welding straps and guide strips on scattered items or large objects. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the handheld ultrasonic welding gun in an embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the handheld ultrasonic welding gun in an embodiment of this utility model;

[0025] Figure 3 This is a partial structural diagram of the handheld ultrasonic welding gun in an embodiment of this utility model;

[0026] Figure 4 This is a schematic diagram of the trigger structure in an embodiment of the present utility model;

[0027] Figure 5 This is an exploded view of the outer shell in an embodiment of the present invention.

[0028] In the picture:

[0029] 1. Outer shell; 10. Gun head; 101. Limiting groove; 102. Heat dissipation hole; 11. Handheld part; 110. Arc-shaped recessed part; 111. Battery compartment; 12. Electronic control board; 13. Regulator;

[0030] 2. Transducer; 20. Welding head;

[0031] 3. Trigger; 30. Limit block; 31. Micro switch;

[0032] 4. Load-bearing connecting piece; 40. Guide rod; 41. Gasket;

[0033] 5. Battery. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0039] like Figure 1-5As shown, this utility model provides a handheld ultrasonic welding gun, which includes a housing 1, the upper end of which is divided into a gun head 10, and the lower end of which is divided into a handheld part 11; a transducer 2, installed inside the gun head 10, one end of which is connected to a welding head 20, the free end of which extends to the outside of the gun head 10; a trigger 3, movably installed in the handheld part 11, the top of which is connected to a load connecting piece 4, and a micro switch 31 is provided below the trigger 3, with an elastic contact piece on the micro switch 31 abutting against the trigger; the other end of the load connecting piece 4 away from the trigger 3 extends to the outside of the gun head 10 and is correspondingly arranged with the welding head 20; and a battery 5, installed inside the handheld part 11, which is electrically connected to the micro switch 31 and the transducer 2.

[0040] This utility model provides a handheld ultrasonic welding gun. During welding operations, the handheld part 11 of the welding gun is held, and the two welding ends of the strap or guide strip are placed between the load connecting piece 4 and the welding head 20. By pulling the trigger 3, the load connecting piece 4 is moved towards the welding head 20, causing the two welding ends of the strap or guide strip to press together between the load connecting piece 4 and the welding head 20. Since the elastic contact of the micro switch 31 abuts against the trigger 3, when the trigger 3 is pulled to the target stroke, the elastic contact will trigger the micro switch 31 to close, and the transducer 2 will be energized to start welding the strap or guide strip between the welding head 20 and the load connecting piece 4. After welding is completed, the trigger 3 is released, and the load connecting piece 4 returns to its original position under the action of the elastic contact, thus completing the welding operation. This handheld ultrasonic welding gun has an integrated gun-shaped structure, which is convenient for handheld operation and increases its applicability. It effectively solves the problem that traditional split ultrasonic welding equipment is not convenient for welding straps and guide strips on scattered items or large objects.

[0041] In this embodiment, as Figure 3 As shown, one end of the load connecting piece 4 located inside the housing is connected to the top of the trigger 3, and the other end extends out of the housing in a curved shape and is correspondingly positioned to the welding head 20; furthermore, as Figure 4 and Figure 5 As shown, limit blocks 30 are provided on the left and right sides of the trigger 3, and a limit groove 101 matching the limit blocks 30 is provided in the gun head 10. The trigger 3 slides in the limit groove 101 through the limit blocks 30 on both sides. When the trigger 3 is pulled, the load connecting piece 4 will move together with the trigger 3, so that the load connecting piece 4 moves closer to or further away from the free end of the welding head 20, thereby completing the pressure welding operation on the strap or guide belt. Specifically, in order to make it more comfortable and easier to pull the trigger 3, the shape of the end face of the trigger 3 extending outside the handheld part 11 is designed as an ergonomic arc structure, and anti-slip texture is provided on the surface to enhance the operator's grip stability and control accuracy during use. At the same time, the handheld part 11 is provided with an arc-shaped recess 110 matching the trigger 3.

[0042] In this embodiment, as Figure 1 and Figure 2 As shown, the free end of the load connecting piece 4 has a through hole, through which a guide rod 40 passes. A washer 41 is installed at one end of the guide rod 40 near the welding head 20, and a nut (not shown) is connected to the other end. The diameter of the nut is larger than the diameter of the through hole to prevent the guide rod 40 from disengaging from the through hole. A spring (not shown) is fitted on the guide rod 40 between the washer 41 and the load connecting piece 4. In the above structure, during welding operations, the welding end of the strap or guide belt is placed between the washer 41 and the welding head 20. When the trigger 3 is pulled, the washer 41 moves toward the welding head 20, and the strap or guide belt abuts against the washer 41 and the welding head 20. At this time, the trigger 3 is pulled. When the trigger 3 is pressed, the spring is compressed, and under the spring force, the pad 41 is pushed to squeeze the welding end of the strap or guide belt. The micro switch 31 closes, and the transducer 2 starts to perform the welding operation. After welding is completed, the pressure on the trigger 3 is reduced, allowing the spring to return to its original position by a certain distance. At this time, the pressure of the spring on the strap or guide belt decreases. When the temperature of the welding surface of the strap or guide belt drops, the trigger 3 can be completely released, thus completing the entire welding operation. This handheld ultrasonic welding gun not only has an integrated structure, which is convenient for operation while moving, but also has a welding structure and welding stability that are no less than those of a split-structure ultrasonic welding gun, thus improving the application environment and versatility of the handheld ultrasonic welding gun.

[0043] Furthermore, such as Figure 2 As shown, the gun head 10 is equipped with an electronic control board 12, and an regulator 13 is connected to the electronic control board 12. The other end of the regulator 13 extends to the outside of the gun head 10. The transducer 2, battery 5, electronic control board 12 and regulator 13 are electrically connected, so that the regulator 13 can adjust the power of the transducer 2 in real time steplessly to adapt to welding objects of different thicknesses and materials, thereby improving the applicability of the handheld ultrasonic welding gun. Specifically, the welding head 20 can be set into a rectangular, circular or "V" shaped structure according to the material being welded. In this embodiment, the welding head is in the shape of a "V", which is more suitable for welding some guide belts and straps.

[0044] In addition, a battery compartment 111 is provided inside the handheld part 11. The bottom end of the handheld part 11 is open and connected to the battery compartment 111. The battery 5 is detachably snapped into the battery compartment 111 through the open end of the handheld part 11, which facilitates power replacement and improves the continuous operation capability of the equipment. Multiple heat dissipation holes 102 are also provided on the top of the outer shell 1 (gun head) to prevent the transducer 2 from generating high temperatures during long-term operation, thereby improving the stability and service life of the handheld ultrasonic welding gun.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A hand-held ultrasonic welding horn characterized by, include: The outer casing has an upper part divided into a gun head and a lower part divided into a handheld part. A transducer is installed inside the gun head, one end of which is connected to a welding head, and the free end of the welding head extends to the outside of the gun head. A trigger is movably mounted on the handheld part. A load connecting piece is connected to the top of the trigger. A micro switch is provided below the trigger, and an elastic contact piece on the micro switch abuts against the trigger. The other end of the load connecting piece, away from the trigger, extends to the outside of the gun head and is correspondingly arranged with the welding head. A battery is installed inside the handheld part and is electrically connected to the micro switch and the transducer.

2. A hand-held ultrasonic welding horn according to claim 1, wherein, A guide rod is threaded through the free end of the load connecting piece. A washer is installed at one end of the guide rod near the welding head, and a nut is connected to the other end. A spring is sleeved on the guide rod between the washer and the load connecting piece.

3. A hand-held ultrasonic welding horn according to claim 1, wherein, The gun head is equipped with an electronic control board, and the electronic control board, the transducer and the battery are electrically connected.

4. A hand-held ultrasonic welding horn according to claim 3, wherein, An regulator is connected to the electronic control board, and one end of the regulator extends to the outside of the gun head.

5. A hand-held ultrasonic welding horn according to claim 1 wherein, The trigger is provided with limiting blocks on both the left and right sides, and the gun head is provided with a limiting groove that matches the limiting blocks.

6. A hand-held ultrasonic welding horn according to claim 5, wherein, The trigger extends in an arc shape at one end outside the handgrip, and the handgrip has an arc-shaped recess that matches the trigger.

7. A hand-held ultrasonic welding horn according to claim 1 wherein, The welding head has a "V" shaped structure.

8. A hand-held ultrasonic welding horn according to claim 1 wherein, The bottom of the handheld part is open, and a battery compartment is formed inside it. The battery is detachably snapped into the battery compartment.

9. A hand-held ultrasonic welding horn according to any one of claims 1-8, characterized in that, The gun head is equipped with heat dissipation holes.

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