Ultrasonic torque welding apparatus and device

Abstract

The application belongs to the technical field of tab welding, and discloses an ultrasonic torque welding device and equipment, which comprises a welding mechanism and a dust suction mechanism. The welding mechanism comprises a welding seat and a welding head connected to the welding seat, and the welding head has a welding end. The dust suction mechanism comprises a dust suction cylinder and at least one dust suction pipe, the dust suction cylinder is sleeved outside the welding head, the dust suction cylinder, the welding head and the welding seat cooperatively form a dust suction cavity, one end of the dust suction cylinder near the welding end surrounds the welding head and cooperates with the welding head to form a dust suction port communicating with the dust suction cavity, one end of the dust suction pipe communicates with the dust suction cavity, and the other end of the dust suction pipe is connected with a negative pressure device. The ultrasonic torque welding device and equipment provided by the application greatly reduce the risk of short circuit caused by the communication of the cover plate assembly and the tab through the debris, and have high safety and reliability.

Description

Technical Field

[0001] This utility model relates to the field of electrode welding technology, and in particular to an ultrasonic torque welding device and equipment. Background Technology

[0002] The battery includes a casing, a cover assembly, and a cell disposed within the casing. The cell is provided with tabs. The cover assembly includes a top cover and terminals disposed on the top cover. The tabs are welded to the terminals to achieve electrical connection.

[0003] In related technologies, the welding method for tabs and terminals is typically ultrasonic-laser combined welding, which includes an ultrasonic pre-welding step for the tabs and a final laser welding step. However, the ultrasonic-laser combined welding method requires two welding processes, which is complex. Furthermore, the heat input during tab laser welding is high, causing severe burns to the plastic and posing a risk of burns to the terminal sealing ring, as well as risks to internal insulation and airtightness. Ultrasonic torsion welding offers advantages such as simplified processes and high reliability, and can be applied to the tab-terminal welding process. However, ultrasonic torsion welding generates debris, and if this debris remains on the cell or cover plate, it poses a risk of short circuits, requiring improvements in both safety and reliability. Utility Model Content

[0004] The first objective of this application is to provide an ultrasonic torque welding apparatus to solve the technical problem that debris is easily left on the battery cell or cover plate in the prior art.

[0005] The second objective of this application is to provide an ultrasonic torque welding device with high reliability.

[0006] Based on the above concept, the technical solution adopted in this application is:

[0007] An ultrasonic torque welding apparatus, comprising:

[0008] A welding mechanism includes a welding base and a welding head connected to the welding base, the welding head having a welding end;

[0009] A dust collection mechanism includes a dust collection cylinder and at least one dust collection pipe. The dust collection cylinder is sleeved around the welding head. The dust collection cylinder, the welding head, and the welding base cooperate to form a dust collection chamber. One end of the dust collection cylinder near the welding end surrounds the welding head and cooperates with the welding head to form a dust collection port communicating with the dust collection chamber. One end of the dust collection pipe is connected to the dust collection chamber, and the other end of the dust collection pipe is connected to a negative pressure device.

[0010] The technical effects that the above technical solution can achieve are:

[0011] The dust collection mechanism includes a dust collection cylinder fitted over the welding head, which is connected to a dust collection port located near the welding end. The dust collection cylinder, welding head, and welding base can cooperate to form a dust collection chamber. The dust collection pipe is connected between the dust collection chamber and a negative pressure device, allowing the negative pressure device to draw in gas and debris from the dust collection chamber, creating a negative pressure within the chamber. This allows the dust collection chamber to draw in gas and debris from the welding end through the dust collection port, thereby reducing the amount of debris near the welding end. This results in minimal or no debris residue on the battery cell or cover assembly, ensuring a high level of cleanliness at the welding position between the tab and the terminal post. This significantly reduces the risk of short circuits caused by debris connecting the cover assembly and the tab, providing high safety and reliability. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this application and these drawings without creative effort.

[0013] Figure 1 This is a first structural schematic diagram of the ultrasonic torque welding equipment provided in the embodiments of this application;

[0014] Figure 2 This is provided by the embodiments of this application. Figure 1 The enlarged view at point A is shown below;

[0015] Figure 3 This is a cross-sectional view of a portion of the ultrasonic torque welding equipment provided in the embodiments of this application;

[0016] Figure 4 This is a partial enlarged view of the ultrasonic torque welding equipment provided in the embodiments of this application;

[0017] Figure 5 This is a schematic diagram of the second structure of the ultrasonic torque welding equipment provided in the embodiments of this application;

[0018] Figure 6 This is an embodiment of the present application. Figure 5 The enlarged view at point B is shown below;

[0019] Figure 7 This is a schematic diagram of the vacuuming mechanism provided in the embodiments of this application;

[0020] Figure 8 This is an embodiment of the present application. Figure 3 The enlarged view at point C is shown below;

[0021] Figure 9This is an exploded view of the dust collection mechanism and welding mechanism provided in the embodiments of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Welding mechanism; 11. Welding base; 12. Welding head; 121. Welding end; 2. Dust collection mechanism; 21. Dust collection tube; 211. Conical section; 2111. Large end; 2112. Small end; 212. First straight section; 213. Second straight section; 22. Dust collection pipe; 23. Dust collection chamber; 24. Dust collection port; 25. Flanged edge; 3. Second connecting piece; 4. Third connecting piece; 10. Cover plate positioning structure; 20. Cell positioning structure; 30. Pressing structure; 301. Clearance hole; 100. Cover plate assembly; 1001. Terminal post; 200. Cell; 2001. Terminal tab. Detailed Implementation

[0024] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of this application will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not all of them.

[0025] It should be understood that the phrase "an embodiment" or "one embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in one embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this application, unless otherwise expressly 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 application based on the specific circumstances.

[0028] In this application, unless otherwise expressly 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. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0029] In the description of this embodiment, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in between the component.

[0031] The technical solution of this application will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] In related technologies, a combination of ultrasonic welding and laser welding is used to weld the tabs and posts. During the welding process, a sealed cover is placed over the welding area to prevent airborne impurities from affecting the weld quality. The sealed cover has a transparent window, allowing the ultrasonic welding head and laser welding head to weld the tabs and posts non-contactly. However, when using an ultrasonic torque welding device, the welding head needs to contact the tabs, and a significant amount of debris is generated during the welding process. This debris can affect the connection between the tabs and posts, thus impacting safety in subsequent processes.

[0033] To address the aforementioned issues, this embodiment provides an ultrasonic torque welding device that can remove debris at the welding position between the electrode tab and the electrode post, ensuring welding quality and welding effect.

[0034] Optionally, such as Figures 1 to 9 As shown, the ultrasonic torque welding equipment may include an ultrasonic torque welding device, a cover plate positioning structure 10, and a cell positioning structure 20. The cover plate positioning structure 10 is used to position the cover plate assembly 100, and the cell positioning structure 20 is used to position the cell 200. In this embodiment, two cell positioning structures 20 are provided, arranged opposite to each other, and used to position the two cells 200. The tabs 2001 of both cells 200 are used to connect to the posts 1001 of the cover plate assembly 100.

[0035] It should be noted that ultrasonic torque welding is an advanced joining technology that combines the principles of ultrasonic welding and torque (rotational friction) welding, primarily used for welding metals or thermoplastics. It achieves efficient fusion of material interfaces through the combined action of high-frequency vibration (ultrasound) and rotational friction. Specifically, the basic principle of ultrasonic torque welding is to weld two or more metal parts together using ultrasonic vibration and torque. Ultrasonic vibration generates high-frequency mechanical vibration, which induces frictional heat on the metal surface, causing it to melt. Torque generates friction between the metal parts, increasing the contact area and thus the weld strength.

[0036] More specifically, ultrasonic vibration refers to the transmission of high-frequency ultrasonic waves (typically 20kHz-40kHz) through the welding head to the workpiece contact surface, generating microscopic frictional heat, softening the material, and damaging the surface oxide layer. Torque rotation refers to the application of rotational torque simultaneously with ultrasonic waves, causing relative motion of the workpiece, further generating frictional heat and promoting plastic deformation of the material. Pressure and fusion: Under the combined action of pressure and heat, molecular diffusion occurs at the material interface, forming a strong metallurgical bond or polymer interweaving upon cooling. The technical advantages of ultrasonic torque welding are: high efficiency and energy saving, low-temperature welding, high-strength joints, and compatibility with dissimilar materials. High efficiency and energy saving are reflected in the lower energy required compared to traditional friction welding or ultrasonic welding. Low-temperature welding is reflected in the reduction of the heat-affected zone, making it suitable for heat-sensitive materials (such as aluminum alloys and electronic components). High-strength joints are reflected in the uniform interface bonding and fewer pores and defects. Compatibility with dissimilar materials is reflected in the ability to weld different metal or plastic combinations (such as copper-aluminum, PP-PET).

[0037] In this embodiment, the tab 2001 and the post 1001 can be connected together by torque welding under the action of an ultrasonic torque welding device. When the cell 200 has multiple tabs 2001, the multiple tabs 2001 can also be connected together by torque welding under the action of an ultrasonic torque welding device.

[0038] In this embodiment, after the cell positioning structure 20 positions the cell 200, as follows: Figure 1 and Figure 3 As shown, in order to facilitate the flat laying of the tabs 2001 of the battery cell 200 on the cover plate assembly 100, the two battery cells 200 are placed at an angle, and the gap between the two battery cells 200 is small. The space between the two battery cells 200 is also small. The gap between the two battery cells 200 needs to accommodate the welding head. If an additional dust collection device is set up, on the one hand, it will interfere with the welding head, and on the other hand, it is far away from the welding position, so the dust collection effect is not good.

[0039] As can be seen, in this embodiment, only one welding process is required between the tab 2001 and the terminal post 1001. Compared with ultrasonic bonding and laser welding, the tab 2001 can be directly welded to the terminal post 1001, simplifying the welding process and thus improving the welding efficiency between the terminal post 1001 and the tab 2001. Furthermore, torque welding reduces the height requirement for the tab 2001. For example, the torque welding method provided in this embodiment is applicable to tabs 2001 with a height of less than 40 mm, such as tabs 2001 with a height of 35 mm. Additionally, for the case of multilayer cells 200, i.e., applications where the tab 2001 has 100 or more layers, the heat input is relatively small during the welding process of layers 100-140, with a maximum temperature close to 120°C. Therefore, there is no risk of burning the plastic of the cover assembly 100 and the sealing ring, resulting in high reliability.

[0040] One embodiment of this application provides an ultrasonic torque welding apparatus, such as... Figures 1 to 9 As shown, the ultrasonic torque welding device includes a welding mechanism 1 and a dust collection mechanism 2. The dust collection mechanism 2 is used to remove debris, thereby reducing the amount of debris at the welding position between the tab 2001 and the post 1001, ensuring the cleanliness of the welding position between the tab 2001 and the post 1001, and thus improving the welding effect between the tab 2001 and the post 1001.

[0041] Exemplarily, the welding mechanism 1 includes a welding base 11 and a welding head 12 connected to the welding base 11, the welding base 11 being used to fix the welding head 12. The welding head 12 has a welding end 121, which is used to contact the electrode tab 2001 to achieve welding between the electrode tab 2001 and the electrode post 1001. It is understood that the welding end 121 is one end in the axial direction of the welding head 12, and the other end in the axial direction of the welding head 12 is connected to the welding base 11. Of course, it is understood that the ultrasonic torque welding device may also include other components, such as a controller, an ultrasonic generator, a rotary drive motor, a translational drive cylinder, etc. For details, please refer to the ultrasonic torque welding machine in the related art, which will not be described in detail in this embodiment.

[0042] For example, such as Figure 3 As shown, the vacuuming mechanism 2 includes a vacuum tube 21 and at least one vacuum pipe 22. The vacuum tube 21 is sleeved around the welding head 12. This arrangement makes full use of the space around the welding head 12, so that the space occupied by the vacuum tube 21 and the welding head 12 as a whole is not too large. This makes it suitable for scenarios where the gap between the two battery cells 200 is small. The vacuum tube 21 will not interfere with the movement of the welding head 12, which is conducive to the miniaturization of the vacuuming mechanism 2.

[0043] In some embodiments, such as Figure 3 As shown, the dust collection cylinder 21, welding head 12, and welding base 11 cooperate to form a dust collection chamber 23, as... Figure 4 As shown, the end of the suction tube 21 near the welding end 121 surrounds the welding head 12 and cooperates with the welding head 12 to form a suction port 24 that connects to the suction chamber 23. The suction port 24 can suck welding debris into the suction chamber 23. One end of the suction pipe 22 is connected to the suction chamber 23, and the other end of the suction pipe 22 is connected to a negative pressure device. The negative pressure device, also known as a vacuum device, can generate negative pressure, thereby sucking out debris from the suction chamber 23 through the suction pipe 22.

[0044] In some optional embodiments, the suction port 24 is an annular opening, that is, the suction cylinder 21 and the welding head 12 can be coaxially arranged so that the debris around the welding end 121 of the welding head 12 can be sucked into the suction cylinder 21 to improve the suction effect.

[0045] It should be noted that one end of the vacuum cleaner 21 is positioned close to the welding end 121, but it does not obstruct the welding end 121. That is, the welding end 121 refers to the part of the vacuum cleaner 21 that is exposed. In this way, the setting of the vacuum cleaner 21 will not affect the welding end 121 welding the tab 2001 and the post 1001, thus ensuring the welding effect.

[0046] It should also be noted that there is a gap between the inside of the vacuum cleaner 21 and the welding head 12, that is, the vacuum cleaner 21 and the welding head 12 are not directly connected. Thus, the vacuum cleaner 21 will not interfere with the vibration or movement of the welding head 12, and therefore will not affect the basic function of the welding head 12.

[0047] In some alternative embodiments, the negative pressure device can be a vacuum pump (e.g., a rotary vane vacuum pump from Edwars or Busch) or a vacuum generator (e.g., Festo or SMC), as long as it can adsorb the gas and debris in the dust collection chamber 23. This embodiment does not limit this.

[0048] The ultrasonic torque welding device provided in this embodiment includes a dust collection mechanism 2, which is sleeved on the welding head 12. The dust collection cylinder 21 is connected to a dust collection port 24, which is located near the welding end 121. The dust collection cylinder 21, the welding head 12, and the welding seat 11 can cooperate to form a dust collection chamber 23. The dust collection pipe 22 is connected between the dust collection chamber 23 and the negative pressure device, so that the negative pressure device can suck up the gas and debris in the dust collection chamber 23, thereby generating a negative pressure in the dust collection chamber 23. This allows the dust collection chamber 23 to suck up the gas and debris at the welding end 121 through the dust collection port 24, thereby reducing the amount of debris near the welding end 121. This ensures that there is no debris or very little debris remaining on the battery cell 200 or the cover plate assembly 100, resulting in a high degree of cleanliness at the welding position of the electrode tab and the electrode post 1001. This greatly reduces the risk of short circuit between the cover plate assembly 100 and the electrode tab due to debris, and provides high safety and reliability.

[0049] In at least one possible implementation, the dust collection tube 21 is connected to the welding base 11, that is, both the welding head 12 and the dust collection tube 21 are connected to the welding base 11. On the one hand, this improves the utilization rate of the welding base 11 and makes the function of the welding base 11 more abundant. On the other hand, during the movement of the welding mechanism 1, the dust collection tube can move with the welding mechanism 1, which improves the overall integrity of the ultrasonic torque welding device.

[0050] It is understandable that the vacuum cleaner 21 may not be connected to the welding base 11, but may be connected to other fixed structures. This embodiment does not limit this.

[0051] In some alternative embodiments, such as Figure 5 and Figure 6 As shown, the ultrasonic torque welding equipment also includes a clamping structure 30, which is used to clamp and fix the electrode tab 2001 onto the cover plate assembly 100, so that the electrode tab 2001 can make tight contact with the electrode post 1001, thereby improving the welding effect between the electrode tab 2001 and the electrode post 1001. Figure 6 As shown, the clamping structure 30 is provided with a clearance hole 301, which is directly opposite to the pole post 1001. The welding head 12 can pass through the clearance hole 301 and contact the pole tab 2001.

[0052] In at least one possible implementation, such as Figure 7 and Figure 9As shown, the vacuum cleaner 21 includes a conical section 211. The conical section 211 has a larger end 2111 and a smaller end 2112. For example, the end face area of ​​the larger end 2111 is larger than the end face area of ​​the smaller end 2112. The smaller end 2112 of the conical section 211 is located close to the welding end 121, and the larger end 2111 of the conical section 211 can be connected to the welding base 11 or other fixed structures. By setting the conical section 211, and with the smaller end 2112 of the conical section 211 close to the welding end 121, the suction force at the suction port 24 can be increased, thereby increasing the adsorption range, making the larger area around the welding position of the electrode tab 2001 and the electrode post 1001 cleaner. Furthermore, the volume of the suction chamber 23 formed by the conical section 211, the welding base 11, and the welding head 12 can be relatively large, which is beneficial for the temporary retention of debris in the suction chamber 23.

[0053] It is understandable that the vacuum cleaner 21 may not include the tapered section 211, but may be a straight cylinder structure. This embodiment does not limit this.

[0054] For example, the shape of the tapered segment 211 can be a cone, pyramid, frustum, truncated cone, etc., and this embodiment does not limit it.

[0055] In some embodiments, the vacuum cleaner cartridge 21 may include not only the tapered section 211, but also a first cylindrical section 212. Please continue reading. Figure 7 and Figure 9 The vacuum cleaner 21 also includes a first straight section 212 connected to the conical section 211. One end of the first straight section 212 is connected to the larger end 2111 of the conical section 211, and the other end of the first straight section 212 can be connected to the welding base 11 or other fixed structure. The suction pipe 22 is connected to the conical section 211, making the suction pipe 22 closer to the smaller end 2112, and thus closer to the suction port 24, which is conducive to generating greater suction force. By setting the first straight section 212, on the one hand, it is easy to connect to the welding base 11 or other fixed structure, and the overall length of the vacuum cleaner 21 can be relatively long. On the other hand, it can match the shape of the welding head 12, so that the formed suction chamber 23 is not too large, thus ensuring greater suction force at the suction port 24.

[0056] In other embodiments, the vacuum cleaner 21 may consist only of the tapered section 211, and this embodiment is not limited to this.

[0057] In some embodiments, to ensure a strong suction at the suction port 24, the end of the vacuum cleaner 21 near the suction port 24 is cylindrical; that is, the end of the vacuum cleaner 21 used to form the suction port 24 is cylindrical. This configuration generates a strong and uniform suction at the cylindrical end of the vacuum cleaner 21 near the suction port 24, ensuring effective and efficient dust extraction, reducing the risk of dust falling out of the suction chamber 23 due to decreased flow velocity caused by increased flow area, and improving suction reliability.

[0058] In at least one embodiment, such as Figure 7 As shown, the end of the vacuum cleaner 21 that is close to the suction port 24 and is cylindrical is called the second cylindrical section 213. The second cylindrical section 213 is connected to the small end 2112 of the conical section 211, and the end of the second cylindrical section 213 that is away from the conical section 211 cooperates with the welding head 12 to form the suction port 24. The second cylindrical section 213 can be cylindrical, prismatic, etc., and this embodiment does not limit it.

[0059] In one or more embodiments of this application, such as Figure 8 As shown, along the axial direction of the vacuum cleaner 21, the distance between the vacuum port 24 and the end of the welding end 121 (or the end face of the welding end 121) is H1mm, where H1mm ranges from 10mm to 50mm. For example, H1mm can be located in multiple intervals such as 10mm-40mm, 10mm-30mm, 20mm-30mm, 20mm-50mm, etc. Specifically, H1mm = 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, or 50mm, or any value between the two mentioned above.

[0060] It should be noted that when the distance between the suction port 24 and the end of the welding end 121 falls within the specified range, it will not affect the welding effect and will have a high suction efficiency. The distance between the suction port 24 and the end of the welding end 121 should not be too small, as this will carry away the welding heat from the welding end 121, thus affecting welding efficiency. The distance between the suction port 24 and the end of the welding end 121 should not be too large, as this will affect the suction efficiency and result in poor suction.

[0061] In at least one possible implementation, please continue to see Figure 8The minimum distance between the inner wall of the vacuum cleaner cylinder 21 and the outer wall of the welding head 12 is H2mm, where H2mm is greater than 1.5mm. For example, H2mm can be 1.6mm, 1.8mm, 2mm, 2.1mm, 2.2mm, etc. The minimum distance between the inner wall of the vacuum cleaner cylinder 21 and the outer wall of the welding head 12 should not be too small, otherwise the flow area will be narrow, leading to debris blockage. The minimum distance between the inner wall of the vacuum cleaner cylinder 21 and the outer wall of the welding head 12 should not be too large, otherwise the suction power will be reduced, thus affecting the vacuuming efficiency and effect.

[0062] In some embodiments, the ratio of the area of ​​the suction port 24 to the area of ​​the end of the welding end 121 ranges from 1.2 to 2. For example, the ratio of the area of ​​the suction port 24 to the area of ​​the end of the welding end 121 can be within the range of 1.2-1.8, 1.2-1.5, 1.3-1.8, 1.5-2, etc. Specifically, the ratio of the area of ​​the suction port 24 to the area of ​​the end of the welding end 121 can be 1.2, 1.3, 1.5, 1.6, 1.8, 2, etc., or any value between the two. The ratio of the area of ​​the suction port 24 to the area of ​​the end of the welding end 121 should not be too small. If it is too small, it means that the area of ​​the suction port 24 is too small. Although the suction power is large, the amount of dust collected is small, and the dust collection effect is poor. The ratio of the area of ​​the suction port 24 to the area of ​​the end of the welding end 121 should not be too large. If it is too large, it means that the diameter of the end of the suction port 24 of the suction cylinder 21 is too large. On the one hand, it will reduce the suction power, and on the other hand, it will cause interference with the battery cell 200 or other components.

[0063] In at least one possible implementation, such as Figure 2 As shown, the suction pipe 22 is inclined, and it is inclined towards the welding base 11. Thus, the connection point between the suction pipe 22 and the suction cylinder 21 faces the suction port 24, thereby ensuring a strong suction force at the suction port 24. Furthermore, to further increase the suction force, such as... Figure 3 As shown, the angle α between the axis of the suction pipe 22 and the axis of the suction cylinder 21 is an acute angle. This setting can reduce the resistance of the gas in the suction chamber 23 when it enters the suction pipe 22, so that the gas at the suction port 24 can enter the suction pipe 22 without changing its movement direction too much, thus further improving the suction effect.

[0064] In some embodiments, a vacuum tube 22 may be provided, with one end of the vacuum tube 22 connected to the vacuum cylinder 21 and the other end connected to the negative pressure device.

[0065] In other embodiments, multiple suction pipes 22 may be provided, all connected to the suction cylinder 21, and the multiple suction pipes 22 are arranged at equal intervals along the circumference of the suction cylinder 21. This arrangement can generate a more uniform suction force, thereby improving the uniformity of suction and reducing blind spots. In this embodiment, as... Figure 7 As shown, there are two suction pipes 22, which are symmetrically arranged on both sides of the suction cylinder 21, and can also generate a relatively uniform suction force.

[0066] In some embodiments, the vacuum cleaner cylinder 21 and the vacuum cleaner tube 22 are an integral structure. This configuration improves the connection strength between the vacuum cleaner cylinder 21 and the vacuum cleaner tube 22 and reduces the risk of separation. On the other hand, it improves the overall integrity of the vacuuming mechanism 2, making it easier to assemble the whole on the welding mechanism 1 or other fixed structures. The vacuuming mechanism 2 can also have high sealing performance, thereby improving the suction power during vacuuming.

[0067] In other embodiments, the vacuum cleaner cylinder 21 and the vacuum cleaner tube 22 may also be separate structures connected by connecting components; this embodiment does not limit this.

[0068] There are various ways to connect the vacuum cleaner 21 to the welding base 11. This embodiment provides the following connection methods as examples.

[0069] In one connection method between the vacuum cleaner 21 and the welding socket 11, such as Figure 7 As shown, the end of the vacuum cleaner 21 facing away from the welding end 121 has a flange 25, which is connected to the welding base 11. By providing the flange 25, the connection area with the welding base 11 can be increased, thereby improving the connection strength. Furthermore, the ultrasonic torque welding device also includes a first connecting member (not shown in the figure), which connects the flange 25, the welding base 11, and the welding head 12. That is, the flange 25, the welding base 11, and the welding head 12 are all connected by the first connecting member, and the welding head 12 shares the first connecting member with the vacuum cleaner 21. This arrangement reduces the number of first connecting members, making the structure of the ultrasonic torque welding device simpler and easier to assemble.

[0070] For example, the first connector can be a screw, bolt, etc., and the welding base 11, welding head 12 and flange 25 are provided with connecting holes corresponding to the first connector. This embodiment does not limit this.

[0071] It should be noted that, in order to improve the sealing performance of the suction chamber 23 and to have greater suction at the suction port 24, a sealing ring can be provided between the flange 25 and the welding seat 11, and a sealing ring can also be provided between the welding head 12 and the welding seat 11, thereby making the formed suction chamber 23 more sealed.

[0072] In another connection method between the vacuum cleaner 21 and the welding socket 11, the end of the vacuum cleaner 21 facing away from the welding end 121 still has a flange 25, which is used to connect with the welding socket 11. Furthermore, as... Figure 4 As shown, the ultrasonic torque welding device also includes a second connector 3 and a third connector 4. The flange 25 is connected to the welding base 11 via the second connector 3, and the welding head 12 is connected to the welding base 11 via the third connector 4. The second connector 3 and the third connector 4 are staggered to ensure that the connection between the flange 25 and the welding base 11 does not interfere with the connection between the welding head 12 and the welding base 11. Furthermore, the installation of the welding head 12 requires high precision and is an externally purchased component. If a shared connector is used, the connector would need to be removed and reinstalled when installing the dust collector 21, which could potentially affect the fixing accuracy of the welding head 12.

[0073] For example, the second connector 3 can be a screw, bolt, etc., and the welding base 11 and the flange 25 are provided with connecting holes corresponding to the second connector 3. This embodiment does not limit this. The third connector 4 can be a screw, bolt, etc., and the welding base 11 and the welding head 12 are provided with connecting holes corresponding to the third connector 4. This embodiment does not limit this.

[0074] In another connection method between the vacuum cleaner 21 and the welding socket 11, the vacuum cleaner 21 is snapped onto the welding socket 11. This facilitates the disassembly and assembly of the vacuum cleaner 21 and the welding socket 11. The vacuum cleaner 21 and the welding socket 11 can be connected by a snap-fit ​​structure. For example, the vacuum cleaner 21 has a buckle, and the welding socket 11 has a slot. The buckle snaps into the slot, thus connecting the welding socket 11 and the vacuum cleaner 21.

[0075] It should be noted that a sealing ring is provided between the dust collection cylinder 21 and the welding base 11 to seal the dust collection chamber 23, thereby generating greater suction force at the dust collection port 24.

[0076] The specific connection method between the dust collection tube 21 and the welding base 11 can be selected according to the actual application, and this embodiment does not limit it.

[0077] Obviously, the above embodiments of this application are merely examples for clear illustration and are not intended to limit the implementation of this application. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. An ultrasonic torque welding apparatus characterized by comprising: include: The welding mechanism (1) includes a welding base (11) and a welding head (12) connected to the welding base (11), the welding head (12) having a welding end (121). The dust collection mechanism (2) includes a dust collection cylinder (21) and at least one dust collection pipe (22). The dust collection cylinder (21) is sleeved on the outside of the welding head (12). The dust collection cylinder (21), the welding head (12) and the welding base (11) cooperate to form a dust collection chamber (23). The end of the dust collection cylinder (21) near the welding end (121) surrounds the welding head (12) and cooperates with the welding head (12) to form a dust collection port (24) that communicates with the dust collection chamber (23). One end of the dust collection pipe (22) is connected to the dust collection chamber (23), and the other end of the dust collection pipe (22) is connected to a negative pressure device.

2. The ultrasonic torque welding apparatus of claim 1, wherein, The vacuum cleaner (21) includes a tapered section (211), the small end (2112) of which is located near the welding end (121).

3. The ultrasonic torque welding apparatus of claim 2, wherein, The vacuum tube (21) also includes a first straight section (212) connected to the large end (2111) of the conical section (211); the vacuum pipe (22) is connected to the conical section (211).

4. The ultrasonic torque welding apparatus of any of claims 1-3, wherein, In the axial direction of the vacuum tube (21), the distance between the vacuum port (24) and the end of the welding end (121) is H1mm, and the value of H1mm ranges from 10mm to 50mm.

5. The ultrasonic torque welding apparatus of any of claims 1-3, wherein, The ratio of the area of ​​the dust extraction port (24) to the area of ​​the end of the welding end (121) is in the range of 1.2-2.

6. The ultrasonic torque welding apparatus of any of claims 1-3, wherein, The vacuum tube (21) and the vacuum pipe (22) are an integral structure.

7. The ultrasonic torque welding apparatus of any of claims 1-3, wherein, The end of the vacuum tube (21) near the vacuum port (24) is cylindrical.

8. The ultrasonic torque welding apparatus of any of claims 1-3, wherein, The minimum distance between the inner wall of the dust collection tube (21) and the outer wall of the welding head (12) is H2mm, wherein H2mm is greater than 1.5mm.

9. The ultrasonic torque welding apparatus of any of claims 1-3, wherein, The suction pipe (22) is inclined toward the welding seat (11), and the angle α between the axis of the suction pipe (22) and the axis of the suction cylinder (21) is an acute angle.

10. The ultrasonic torque welding apparatus of any of claims 1-3, wherein, The suction pipe (22) is provided.

11. The ultrasonic torque welding apparatus of any of claims 1-3, wherein, The vacuum tubes (22) are provided in multiple ways, and all of the vacuum tubes (22) are connected to the vacuum cylinder (21), and the vacuum tubes (22) are arranged at equal intervals along the circumference of the vacuum cylinder (21).

12. The ultrasonic torque welding apparatus of claim 11, wherein, There are two suction pipes (22), and the two suction pipes (22) are symmetrically distributed.

13. The ultrasonic torque welding apparatus of any of claims 1-3, wherein, The dust collection tube (21) is connected to the welding base (11).

14. The ultrasonic torque welding apparatus according to claim 13, characterized in that, The dust collection tube (21) has a flange (25) at the end opposite to the welding end (121), and the flange (25) is connected to the welding base (11).

15. The ultrasonic torque welding apparatus of claim 14, wherein, The ultrasonic torque welding device further includes a first connector, which connects the flange (25), the welding seat (11), and the welding head (12).

16. The ultrasonic torque welding apparatus of claim 14, wherein, The ultrasonic torque welding device also includes a second connector (3) and a third connector (4). The flange (25) is connected to the welding base (11) through the second connector (3), and the welding head (12) is connected to the welding base (11) through the third connector (4). The second connector (3) and the third connector (4) are misaligned.

17. The ultrasonic torque welding apparatus of any of claims 1-3, wherein, The dust collection tube (21) is coaxially arranged with the welding head (12).

18. An ultrasonic torque welding apparatus characterized by, Includes the ultrasonic torque welding apparatus as described in any one of claims 1-17.

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