Rapid welding head replacing device of servo ultrasonic welding machine

Abstract

The utility model relates to the field of servo ultrasonic welding machines, and discloses a welding head quick replacement device of a servo ultrasonic welding machine, which comprises a base, a welding machine body is arranged on the upper portion of the base, an amplitude-change pole is arranged on the lower portion of the welding machine body, a welding head is arranged on the outer side of the amplitude-change pole, and a quick release mechanism is arranged on the upper portion of the welding head. The quick dismounting mechanism comprises a dismounting assembly and an auxiliary assembly, the dismounting assembly comprises a connecting seat, the connecting seat is fixedly connected to the upper portion of the welding head, and a guide groove is formed in the outer side of the connecting seat. According to the utility model, through the cooperative use of the quick release mechanism and the welding head, when the welding head needs to be replaced, the operation ring slides in the guide groove and drives the limiting ring to rotate, so that the clamping state of the limiting bead and the limiting groove is controlled, and compared with a traditional bolt fastening or threaded groove connection mode, the time for replacing the welding head is saved, the production efficiency is improved, and the production cost is reduced. Meanwhile, abrasion of connecting parts is reduced.

Description

Technical Field

[0001] This utility model relates to the field of servo ultrasonic welding machines, and in particular to a quick-change device for the welding head of a servo ultrasonic welding machine. Background Technology

[0002] Servo ultrasonic welding machines are devices that use ultrasonic vibrations to weld materials such as plastics and metals. Their core principle is to use an ultrasonic generator to convert industrial frequency AC power into high frequency electrical energy, which is then transmitted to a transducer. The transducer converts the electrical energy into mechanical vibrations of the same frequency, and then the vibration amplitude is amplified by an amplitude transformer and transmitted to the welding head.

[0003] When the welding head contacts the workpiece, the high-frequency vibration causes the molecules on the workpiece surface to generate high-speed friction, instantly generating heat, which causes the material at the welding part of the workpiece to reach the melting point and fuse, thus achieving welding. It is widely used in industries such as medical, electronics, and automobiles. In actual production, due to the different materials, shapes, and sizes of the workpieces being welded, it is often necessary to frequently change welding heads of different specifications.

[0004] Traditional welding head replacement methods typically require multiple tools and involve bolt tightening or threaded grooves to install and remove the welding head. This process is cumbersome, time-consuming, and frequent disassembly and installation can easily lead to wear on the connection parts. To address these issues, a quick welding head replacement device for a servo ultrasonic welding machine is proposed. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a quick-change device for the welding head of a servo ultrasonic welding machine, which aims to improve the problem in the prior art that "the traditional welding head is installed and removed by bolt fastening or threaded groove, which is time-consuming and frequent disassembly and installation can easily lead to wear of the connection parts".

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a quick-change device for the welding head of a servo ultrasonic welding machine, comprising a base, a welding machine body disposed on the upper part of the base, an amplitude transformer rod disposed on the lower part of the welding machine body, a welding head disposed on the outer side of the amplitude transformer rod, a quick-release mechanism disposed on the upper part of the welding head, the quick-release mechanism comprising a disassembly component and an auxiliary component, the disassembly component comprising a connecting seat, the connecting seat being fixedly connected to the upper part of the welding head, a guide groove being provided on the outer side of the connecting seat, an operating ring being slidably connected to the inner wall of the guide groove, an annular groove being provided on the inner wall of the connecting seat, a limit ring being rotatably connected to the inner wall of the annular groove, a limit bead being slidably connected to the inner wall of the annular groove, a limit groove being provided on the outer side of the amplitude transformer rod, and the limit bead being engaged with the inner side of the limit groove.

[0007] As a further description of the above technical solution:

[0008] The auxiliary component includes a support member that is slidably connected to the upper inner wall of the connecting seat. A movable member is fixedly connected to the upper part of the support member, and a spring plate is provided on the upper part of the movable member. A limit plate is fixedly connected to the lower part of the support member, and the limit plate is inserted into the outer side of the connecting seat.

[0009] As a further description of the above technical solution:

[0010] The side of the limiting ring closest to the limiting bead is designed to be raised.

[0011] As a further description of the above technical solution:

[0012] The protrusions on the limiting ring are set as inclined surfaces in a clockwise direction.

[0013] As a further description of the above technical solution:

[0014] The guide groove is provided in multiple sets, and the multiple sets of guide grooves are evenly provided on the outside of the connecting seat.

[0015] As a further description of the above technical solution:

[0016] The outer side of the operating ring is provided with anti-slip grooves.

[0017] As a further description of the above technical solution:

[0018] The limiting plate has a spherical protrusion on its outer side, and the operating ring has a groove on its outer side. The spherical protrusion on the outer side of the limiting plate is engaged with the inner wall of the groove.

[0019] As a further description of the above technical solution:

[0020] The limiting beads are provided in multiple sets, and the multiple sets of limiting beads are arranged in a circular array with the center of the connecting seat as the axis.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by using the quick-release mechanism and the welding head together, when the welding head needs to be replaced, the operating ring slides in the guide groove, drives the limit ring to rotate, and thus controls the engagement state of the limit bead and the limit groove. Compared with the traditional bolt fastening or threaded groove connection method, it saves the time of replacing the welding head, improves production efficiency, and reduces wear on the connection parts.

[0023] 2. In this utility model, by using the auxiliary components and the operating ring together, after the operating ring drives the limiting ring to rotate and limits the limiting bead, the support and the limiting plate can fix the operating ring under the elastic force of the spring plate, thereby preventing the operating ring from loosening and improving the stability of the device. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0025] Figure 2 This is a three-dimensional structural diagram of the disassembled amplitude transformer and welding head in this utility model;

[0026] Figure 3 This is a three-dimensional structural diagram of the limiting ring and limiting bead in this utility model;

[0027] Figure 4 This is a three-dimensional structural diagram of the guide groove and slide groove in this utility model;

[0028] Figure 5 This is a three-dimensional structural diagram of the support member and the limiting plate in this utility model;

[0029] Figure 6 This is a three-dimensional structural diagram of the movable component and the movable ring in this utility model.

[0030] Legend:

[0031] 1. Base; 2. Welding machine body; 3. Amplitude bar; 4. Welding head; 51. Connecting seat; 52. Guide groove; 53. Operating ring; 54. Limiting ring; 55. Limiting bead; 56. Limiting groove; 57. Annular groove; 61. Support component; 62. Moving component; 63. Spring plate; 64. Limiting plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 - Figure 3This utility model provides an embodiment of a quick-change device for the welding head of a servo ultrasonic welding machine, including a base 1, which serves as the basic support structure for the entire device and is stably placed on the working plane, providing a stable installation platform for the welding machine body 2. The welding machine body 2 is mounted on the upper part of the base 1, converting the power frequency AC power into high frequency electrical energy to provide the energy source required for welding operations. It is the core device for realizing the ultrasonic welding function. This technology is existing technology, so it will not be described in detail. An amplitude transformer 3 is mounted on the lower part of the welding machine body 2. The lower part is flat to prevent the welding head 4 from rotating and to receive the mechanical vibration generated by the welding machine body 2. The welding head 4 is mounted on the outer side of the amplitude transformer 3 and directly contacts the workpiece to be welded. It is the execution component for realizing the welding operation. A quick-release mechanism is mounted on the upper part of the welding head 4. The quick-release mechanism includes a disassembly component and an auxiliary component. The disassembly component includes a connecting seat 51, which is firmly fixed on the upper part of the welding head 4 and serves as the mounting base for other components of the disassembly component. The connecting seat 51 is fixedly connected to the upper part of the welding head 4.

[0034] Reference Figure 3 - Figure 5 The outer side of the connecting seat 51 is provided with a guide groove 52. Multiple sets of guide grooves 52 are evenly distributed on the outer side of the connecting seat 51 to limit the rotation angle of the operating ring 53. The operating ring 53 is slidably connected to the inner wall of the guide groove 52. The operating ring 53 slides on the outer side of the connecting seat 51. The operator manually rotates the operating ring 53 to make it slide in the guide groove 52, which at the same time drives the associated limiting ring 54 to rotate, thereby controlling the position of the limiting bead 55, realizing the disassembly and installation of the welding head 4, reducing wear on the connection parts. The outer side of the operating ring 53 is provided with an anti-slip groove to increase the friction between the operator's hand and the operating ring 53, making operation easier. The inner wall of the connecting seat 51 is provided with an annular groove 57 to provide installation and movement space for the limiting ring 54 and the limiting bead 55, ensuring that they can rotate and slide within a specific range to realize the limiting function of the welding head 4 connection.

[0035] Reference Figure 2 - Figure 4A limiting ring 54 is rotatably connected to the inner wall of the annular groove 57. When the operating ring 53 slides and drives the limiting ring 54 to rotate, the protrusion of the limiting ring 54 will push the limiting bead 55 to slide towards the center of the connecting seat 51 within the annular groove 57, changing the engagement state between the limiting bead 55 and the limiting groove 56, thereby achieving the tightening or loosening of the welding head 4. The limiting bead 55 is slidably connected to the inner wall of the annular groove 57. Multiple sets of limiting beads 55 are provided, and the multiple sets of limiting beads 55 are arranged in a circumferential array around the center of the connecting seat 51. The outer side of the amplitude rod 3 A limiting groove 56 is provided, and a limiting bead 55 is engaged inside the limiting groove 56. The side of the limiting ring 54 near the limiting bead 55 is set as a protrusion, and the protrusion on the limiting ring 54 is set as an inclined surface in the clockwise direction. Under the pressure of the inclined surface on the protrusion of the limiting ring 54, the limiting bead 55 can firmly fix the welding head 4 on the amplitude rod 3, ensuring that the welding head 4 will not loosen during the welding process. When replacing the welding head 4, the limiting bead 55 is controlled to disengage from the limiting groove 56 by operating the limiting ring 54, thereby realizing the disassembly of the welding head 4.

[0036] Reference Figure 5 and Figure 6 The auxiliary components include a support member 61, which is slidably connected to the upper inner wall of the connecting seat 51, providing support and guidance for the limiting plate 64. A movable member 62 is fixedly connected to the upper part of the support member 61, moving as the support member 61 slides. It is mainly used to transmit external force and support the spring plate 63, allowing the spring plate 63 to exert its elastic effect. Multiple sets of spring plates 63 are provided on the upper part of the movable member 62. Utilizing their own elastic properties, they apply downward pressure to the movable member 62, thereby maintaining the connection seat 51. The support member 61 is fixedly connected to a limiting plate 64 at its lower part. Multiple sets of limiting plates 64 are provided to limit the sliding range of the connecting seat 51, thereby preventing the limiting ring 54 from loosening. The limiting plate 64 is inserted into the outside of the connecting seat 51. The outer side of the limiting plate 64 is provided with a spherical protrusion. The outer side of the operating ring 53 is provided with a groove. The spherical protrusion on the outer side of the limiting plate 64 is engaged with the inner wall of the groove, which can increase the friction between the limiting plate 64 and the operating ring 53, thereby improving the stability of the operating ring 53.

[0037] Working principle: When in use, first insert the welding head 4 into the amplitude rod 3 so that the position of the limiting bead 55 corresponds to the position of the limiting groove 56. At this time, the operating ring 53 is in the initial position, the limiting ring 54 does not exert a squeezing effect on the limiting bead 55, and the limiting bead 55 can slide freely in the annular groove 57.

[0038] Push the welding head 4 close to the amplitude rod 3. When the limiting bead 55 reaches the position of the limiting groove 56, it will smoothly enter the limiting groove 56 because the limiting bead 55 can slide in the annular groove 57.

[0039] At this time, the operating ring 53 is rotated clockwise. Assuming clockwise is the tightening direction, the operating ring 53 slides in the guide groove 52. The rotation of the operating ring 53 drives the associated limiting ring 54 to rotate in the annular groove 57. Since the protrusion of the limiting ring 54 near the limiting bead 55 is an inclined surface, as the limiting ring 54 rotates, the inclined surface gradually squeezes the limiting bead 55, causing the limiting bead 55 to slide towards the center of the connecting seat 51 in the annular groove 57, thereby tightly locking into the limiting groove 56 and firmly fixing the welding head 4 to the amplitude rod 3.

[0040] After the operating ring 53 completes its rotation, the moving part 62, under the elastic force of the spring plate 63, engages with the spherical protrusion on the limiting plate 64 on the lower side of the support member 61 in the groove on the outer side of the operating ring 53. The spring plate 63 applies downward pressure to the moving part 62 using its own elasticity, thereby maintaining the stability of the connecting seat 51. Multiple sets of limiting plates 64 can also limit the sliding range of the connecting seat 51 and prevent the limiting ring 54 from loosening. When disassembly is required, the above operation can be reversed, saving the time of replacing the welding head 4 and improving production efficiency.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-change device for the welding head of a servo ultrasonic welding machine, comprising a base (1), characterized in that: The base (1) is provided with a welding machine body (2) on the upper part, and a variable amplitude rod (3) is provided at the lower part of the welding machine body (2). A welding head (4) is provided on the outer side of the variable amplitude rod (3). A quick-release mechanism is provided on the upper part of the welding head (4). The quick-release mechanism includes a disassembly component and an auxiliary component. The disassembly component includes a connecting seat (51). The connecting seat (51) is fixedly connected to the upper part of the welding head (4). A guide groove (52) is provided on the outer side of the connecting seat (51). An operating ring (53) is slidably connected to the inner wall of the guide groove (52). An annular groove (57) is provided on the inner wall of the connecting seat (51). A limit ring (54) is rotatably connected to the inner wall of the annular groove (57). A limit bead (55) is slidably connected to the inner wall of the annular groove (57). A limit groove (56) is provided on the outer side of the variable amplitude rod (3). The limit bead (55) is engaged in the inner side of the limit groove (56).

2. The quick-change device for the welding head of a servo ultrasonic welding machine according to claim 1, characterized in that: The auxiliary component includes a support member (61), which is slidably connected to the upper inner wall of the connecting seat (51). A movable member (62) is fixedly connected to the upper part of the support member (61), and a spring plate (63) is provided on the upper part of the movable member (62). A limiting plate (64) is fixedly connected to the lower part of the support member (61), and the limiting plate (64) is inserted into the outer side of the connecting seat (51).

3. The quick-change device for the welding head of a servo ultrasonic welding machine according to claim 1, characterized in that: The limiting ring (54) is convex on the side near the limiting bead (55).

4. The quick-change device for the welding head of a servo ultrasonic welding machine according to claim 1, characterized in that: The protrusions on the limiting ring (54) are set as inclined surfaces in a clockwise direction.

5. The quick-change device for the welding head of a servo ultrasonic welding machine according to claim 1, characterized in that: The guide groove (52) is provided in multiple sets, and the multiple sets of guide grooves (52) are evenly provided on the outside of the connecting seat (51).

6. The quick-change device for the welding head of a servo ultrasonic welding machine according to claim 1, characterized in that: The operating ring (53) has an anti-slip groove on its outer side.

7. The quick-change device for the welding head of a servo ultrasonic welding machine according to claim 2, characterized in that: The limiting plate (64) has a spherical protrusion on its outer side, and the operating ring (53) has a groove on its outer side. The spherical protrusion on the outer side of the limiting plate (64) is engaged with the inner wall of the groove.

8. The quick-change device for the welding head of a servo ultrasonic welding machine according to claim 1, characterized in that: The limiting beads (55) are provided in multiple sets, and the multiple sets of limiting beads (55) are arranged in a circular array with the center of the connecting seat (51) as the axis.

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