Ultrasonic welding machine and welding method
By setting a welding reference surface on the support and precisely adjusting the welding head movement posture in the ultrasonic welding machine, the problem of inconsistent welding quality caused by the surface position deviation of the target part is solved, achieving higher welding consistency and replacement efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG GEELY HLDG GRP CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-21
AI Technical Summary
In the current ultrasonic welding process, the surface position of the target part is prone to deviation, resulting in low consistency of welding quality.
By setting a welding reference surface on the support, the starting and ending positions of the welding head are based on the reference surface, rather than the surface of the target part. Combined with the drive component and the attitude adjustment component, the precise movement and attitude adjustment of the welding head can be achieved, eliminating the influence of target part deformation or dimensional deviation.
It improves the consistency of welding quality, simplifies the replacement and debugging process of target parts with different shapes, and enhances welding efficiency and quality stability.
Smart Images
Figure CN120644769B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of welding apparatus technology, and more specifically, to an ultrasonic welding machine and welding method. Background Technology
[0002] The related technology provides an ultrasonic welding machine. Before starting welding, the ultrasonic welding machine uses the upper surface of the target part to be welded as the welding reference surface, then raises it to a certain height from the welding reference surface to the welding start position, starts to emit ultrasonic waves from the welding start position, and then moves to the welding end position to stop emitting ultrasonic waves.
[0003] However, the surface location of the target part is prone to deviation, resulting in low consistency of welding quality of ultrasonic welding machines in related technologies. Summary of the Invention
[0004] This application provides an ultrasonic welding machine and a welding method to address the problem of how to improve the consistency of welding quality in ultrasonic welding machines.
[0005] According to one aspect of this application, an ultrasonic welding machine is provided, including a support member, a welding head, and a drive assembly. The support member supports a target part to be welded and has a support surface for contacting the target part, including a welding reference surface. The welding head has a reference position that contacts the welding reference surface, and also has a welding start position and a welding end position. The welding start position is offset from the reference position by a first distance, and the welding end position is offset from the reference position by a second distance, where the first distance is greater than the second distance. The drive assembly is drively connected to the welding head and is used to move the welding head from the welding start position to the welding end position.
[0006] The aforementioned ultrasonic welding machine, by setting the welding reference surface on the support, eliminates the need to use the target part's surface as a reference for the welding head's starting and ending positions during the welding process. This eliminates the influence of target part deformation or dimensional deviations on the target part's surface position, thus improving the consistency of welding quality. Specifically, when replacing target parts of the same shape, the welding quality of different target parts with the same shape is more consistent, thereby improving the overall quality of the target parts. Furthermore, for target parts of different shapes, if the wall thickness at the welding reference surface is different, setting the welding reference surface on the support eliminates the influence of variations in target part wall thickness, simplifying the adjustment process when replacing target parts of different shapes and improving adjustment efficiency.
[0007] In one embodiment, there are multiple welding reference surfaces, which are staggered on the support surface. There are multiple reference positions, welding start positions, and welding end positions, each corresponding one-to-one with a welding reference surface. The welding head can be driven to different welding reference surface positions to weld target parts at different welding reference surfaces.
[0008] In one embodiment, the support surface is curved, and at least two welding reference surfaces are not parallel to each other. The ultrasonic welding machine also includes an attitude adjustment component connected to the drive component to cause the drive component and the welding head to change attitude together.
[0009] In one embodiment, there are multiple welding heads, each capable of being driven to different welding reference plane positions to weld target parts at different welding reference planes. There are also multiple driving assemblies, each corresponding to and connected to one of the multiple welding heads.
[0010] In one embodiment, the end of the welding head near the support has an end face. In the reference position, the end face is tangent to the welding reference surface.
[0011] In one embodiment, the reference position, welding start position, and welding end position are spaced apart along the welding depth direction. The driving assembly includes a moving member connected to the welding head and capable of moving together with the welding head along the welding depth direction. The ultrasonic welding machine also includes a limiting assembly; the limiting assembly includes a first limiting structure and a second limiting structure, which are spaced apart along the welding depth direction. At the welding start position, the first limiting structure abuts against the side of the moving member away from the support member; at the welding end position, the second limiting structure abuts against the side of the moving member closer to the support member.
[0012] In one embodiment, the ultrasonic welding machine further includes a depth measuring device for measuring the displacement of the moving part along the welding depth direction.
[0013] In one embodiment, there are multiple supports for supporting different positions of the target component; the welding head can be driven to move to the location corresponding to different supports to weld different positions of the target component using the welding reference surface of the different supports as a reference; and / or, the ultrasonic welding machine further includes a clamping assembly for clamping the target component onto the supports.
[0014] According to another aspect of this application, a welding method is provided, based on the ultrasonic welding machine described in any of the above embodiments. The welding method includes: positioning a welding head at a reference position; controlling a drive assembly to move the welding head from the reference position to a welding start position; placing a target part on a support member; and controlling the welding head to start emitting ultrasonic waves; and controlling the drive assembly to move the welding head from the welding start position to a welding end position; and controlling the welding head to stop emitting ultrasonic waves.
[0015] In one embodiment, there are multiple welding reference surfaces, which are staggered on the support surface; there are multiple reference positions, welding start positions, and welding end positions, each corresponding to a welding reference surface; the welding head can be driven to move to different welding reference surface positions to weld target parts at different welding reference surfaces; the support surface is curved, and at least two welding reference surfaces are not parallel; the ultrasonic welding machine also includes an attitude adjustment component connected to the drive component to drive the drive component and the welding head to change attitude together; the end of the welding head near the support has an end face. Positioning the welding head at the reference position includes: moving the welding head to one of the welding reference surface positions. Controlling the attitude adjustment component to drive the drive component and the welding head to change attitude together, so that the end face is tangent to the welding reference surface. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a perspective view of an ultrasonic welding machine according to an embodiment of this application (the target part is also shown in the figure).
[0018] Figure 2 for Figure 1 A perspective view of the ultrasonic welding machine in the illustrated embodiment.
[0019] Figure 3 for Figure 2 A magnified view of a portion of point C in the illustrated embodiment.
[0020] Figure 4 for Figure 1 A schematic diagram of the support and welding head in the reference position in the illustrated embodiment.
[0021] Figure 5 for Figure 1 A schematic diagram of the target component, support component, and welding head at the welding start position in the illustrated embodiment.
[0022] Figure 6 for Figure 1 A schematic diagram of the target component, support component, and welding head at the welding termination position in the illustrated embodiment.
[0023] Figure 7 for Figure 1 A schematic diagram of the welding head and the second target component in the illustrated embodiment.
[0024] Figure 8 for Figure 1 A schematic diagram of the first target component and the second target component in the embodiment shown.
[0025] Figure 9 for Figure 1 A schematic diagram of a portion of the welding path of the welding head in the illustrated embodiment.
[0026] Figure 10 for Figure 1 A schematic diagram of the welding path of the welding head in the illustrated embodiment.
[0027] Figure 11 for Figure 1 A side view of the driving component in the illustrated embodiment.
[0028] Figure 12 for Figure 11 A partial schematic diagram of point B in the illustrated embodiment.
[0029] Figure 13 This is a flowchart of a welding method according to an embodiment of this application.
[0030] Explanation of key component symbols:
[0031] 100 ultrasonic welding machine
[0032] Support component 10
[0033] Support surface 11
[0034] Welding reference surface 111
[0035] Welding head 20
[0036] End face 21
[0037] Driver Component 30
[0038] Moving part 31
[0039] Attitude adjustment component 40
[0040] Depth measuring device 50
[0041] Base 60
[0042] Clamping assembly 70
[0043] Pressure head 71
[0044] Limiting component 80
[0045] First limiting structure 81
[0046] Second limiting structure 82
[0047] Target part 200
[0048] First target item 201
[0049] Second target component 202
[0050] Reference position W1
[0051] Welding start position W2
[0052] Welding termination position W3
[0053] First distance L1
[0054] Second distance L2
[0055] Welding Depth Direction A
[0056] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation
[0057] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0058] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.
[0060] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0061] Example
[0062] Figure 1 This is a perspective view of an ultrasonic welding machine 100 according to an embodiment of this application (the target part 200 is also shown in the figure). Figure 2 for Figure 1 A perspective view of the ultrasonic welding machine 100 in the illustrated embodiment; Figure 3 for Figure 2 A magnified view of a portion of point C in the illustrated embodiment; Figure 4 for Figure 1 A schematic diagram of the support member 10 and the welding head 20 at the reference position W1 in the embodiment shown. Figure 5 for Figure 1 A schematic diagram of the target component 200, support component 10, and welding head 20 at the welding start position W2 in the embodiment shown; Figure 6 for Figure 1 A schematic diagram of the target component 200, support component 10, and welding head 20 at the welding termination position W3 in the embodiment shown.
[0063] See Figure 1 and Figure 2 This embodiment provides an ultrasonic welding machine 100, which includes a support member 10, a welding head 20, and a drive assembly 30. The support member 10 is used to support the target part 200 to be welded, combined with... Figure 3 As shown, the support member 10 is provided with a support surface 11 for fitting with the target member 200, and the support surface 11 includes a welding reference surface 111. Figures 4 to 6 As shown, the welding head 20 has a reference position W1 that is in contact with the welding reference surface 111. The welding head 20 also has a welding start position W2 and a welding end position W3. The welding start position W2 is offset from the reference position W1 by a first distance L1, and the welding end position W3 is offset from the reference position W1 by a second distance L2. The first distance L1 is greater than the second distance L2. The drive assembly 30 is connected to the welding head 20 and is used to drive the welding head 20 to move from the welding start position W2 to the welding end position W3.
[0064] The aforementioned ultrasonic welding machine 100, by setting the welding reference surface 111 on the support member 10, eliminates the need for the welding start position W2 and welding end position W3 of the welding head 20 to be referenced to the surface of the target part 200 during the welding process. This eliminates the influence of deformation or dimensional deviation of the target part 200 on its surface position, thus improving the consistency of welding quality. Specifically, when replacing target parts 200 with the same shape, the welding quality of different target parts 200 with the same shape is more consistent, thereby improving the quality of the target part 200. For target parts 200 with different shapes, if the wall thickness at the welding reference surface 111 is different, setting the welding reference surface 111 on the support member 10 eliminates the influence of changes in the target part 200's wall thickness, simplifying the debugging process when replacing target parts 200 with different shapes and improving debugging efficiency. Optionally, the support member 10 is made of aluminum alloy, which is less prone to deformation, further ensuring the positional accuracy of the welding reference surface 111, thereby further improving the consistency of welding quality.
[0065] It should be noted that, Figures 4 to 6 This is only used to illustrate the relative positions of the target component 200, the support component 10, and the welding head 20, and does not represent the specific structure of the target component 200, the support component 10, and the welding head 20.
[0066] Figure 7 for Figure 1 A schematic diagram of the welding head 20 and the second target component 202 in the illustrated embodiment.
[0067] In some embodiments, the ultrasonic welding machine 100 further includes a controller (not shown), which is electrically connected to the drive assembly 30 and is used to control the drive assembly 30 to move the welding head 20. The controller's program controls the drive assembly 30 based on the welding depth, that is, it calculates the displacement from the welding start position W2 until the welding head 20 moves to the welding end position W3 and stops calculating the displacement. The displacement traversed by the welding head 20 from the welding start position W2 to the welding end position W3 is a preset welding depth D set by the program, which is a fixed value. When debugging the controller's program, the welding end position W3 is the debugging value. When the tensile strength and appearance after welding meet the requirements, the welding end position W3 is then fixed. It should be noted that an ultrasonic welding machine is provided in the related art, and the controller program of this ultrasonic welding machine controls the welding time, that is, when the welding head starts timing at the welding start position, it stops timing until the welding head moves to the welding end position, and the time for the welding head to move from the welding start position to the welding end position is the preset welding time. In order to ensure that the welding depth is reached, the ultrasonic welding machine in the related art increases the time for emitting ultrasonic waves, resulting in a longer welding time. The ultrasonic welding machine 100 mentioned above, by controlling the welding depth, helps to shorten the welding time and improve the welding efficiency.
[0068] In this embodiment, as Figures 4 to 6 As shown, the target component 200 includes a first target component 201 and a second target component 202. The welding head 20 is used to weld the first target component 201 and the second target component 202 together. During welding, the welding head 20 is first positioned at the reference position W1, then the welding head 20 is offset by a first distance L1 relative to the welding reference surface 111. The first target component 201 is then placed on the support component 10, and the second target component 202 is placed on the first target component 201. The welding head 20 then begins to emit ultrasonic waves and moves towards the welding reference surface 111 to a preset welding depth D until the welding head 20 reaches the welding termination position W3. At this point, the welding head 20 stops emitting ultrasonic waves, thus completing the welding. Optionally, the reference position W1, the welding start position W2, and the welding termination position W3 are respectively set at intervals along the welding depth direction A, and the preset welding depth D is equal to the difference between the first distance L1 and the second distance L2. Optionally, as... Figure 5 As shown, the welding start position W2 is located on the side of the second target part 202 away from the support part 10, and is spaced apart from the second target part 202 along the welding depth direction A, as shown. Figure 6 As shown, the welding termination position W3 is located within the first target part 201.
[0069] Figure 8 for Figure 1 A schematic diagram of the first target component 201 and the second target component 202 in the embodiment shown.
[0070] Optionally, combined Figure 7 and Figure 8 As shown, the first target component 201 is, for example, a bumper, and the second target component 202 is, for example, a bumper bracket. In other embodiments, the first target component 201 and the second target component 202 may also be other components that need to be welded together. It should be noted that... Figure 7 The dashed lines in the diagram represent the welding path of the welding head 20, i.e., the movement path of the welding head 20 during the welding process. For example, if there are two welding reference surfaces 111, the welding head 20 first emits ultrasonic waves from the first welding start position W2 and moves to the first welding end position W3 to complete the welding of the target part 200 at the first welding reference surface 111. Then, the welding head 20 moves from the first welding start position W2 to the second welding start position W2, emits ultrasonic waves again, and moves to the second welding end position W3, thereby completing the welding of the target part 200 at the second welding reference surface 111.
[0071] Figure 9 for Figure 1 A schematic diagram of a portion of the welding path of the welding head 20 in the illustrated embodiment; Figure 10 for Figure 1A schematic diagram of the welding path of the welding head 20 in the illustrated embodiment.
[0072] In some embodiments, such as Figure 3 As shown, there are multiple welding reference surfaces 111, which are staggered on the support surface 11. Combined with... Figures 4 to 6 As shown, there are multiple reference positions W1, welding start positions W2, and welding end positions W3, each corresponding one-to-one with the welding reference surface 111. Figure 9 and Figure 10 As shown, the welding head 20 can be driven to move to different welding reference surfaces 111 to weld the target part 200 at different welding reference surfaces 111. In this way, different positions of the target part 200 can be welded separately using the welding head 20, and since the corresponding welding reference surface 111 is used as a reference for each welding, the consistency of welding quality when welding different positions of the target part 200 is improved. Optionally, the welding head 20 can be driven to move to different welding reference surfaces 111 by a robotic arm. During welding, as... Figure 9 As shown, the welding head 20 can perform welding sequentially along the general layout direction of multiple welding reference surfaces 111 to shorten the welding path.
[0073] In some embodiments, such as Figure 3 As shown, the support surface 11 is curved, and at least two welding reference surfaces 111 are not parallel to each other. Figure 2 As shown, the ultrasonic welding machine 100 also includes a posture adjustment component 40, which is connected to the drive component 30 to drive the drive component 30 and the welding head 20 to change posture together. It should be noted that the support surface 11 is adapted to the shape of the target part 200 to provide more stable support; therefore, the support surface 11 is set as a curved surface to suit the target part 200 with a curved surface. The posture adjustment component 40 is provided to facilitate changing the posture of the welding head 20, thereby facilitating the welding head 20 to contact different welding reference surfaces 111. Optionally, the posture adjustment component 40 can be a robotic arm. Before welding begins, the robotic arm can move the welding head 20 to the position of the welding reference surface 111, and then the robotic arm can change the posture of the welding head 20 to adjust it to the reference position W1 (see...). Figure 4 ).
[0074] In other embodiments, the support surface 11 is planar to fit the shape of the target part 200, which has a planar surface.
[0075] In some embodiments, the preset welding depth D corresponding to multiple welding reference surfaces 111 is equal. The controller solidifies the program from the welding start position W2 to the welding end position W3 as a subroutine in the welding process. This simplifies program debugging, enables offline programming, and improves debugging efficiency. In use, welding at multiple positions of the same target part 200 can be performed using a subroutine call mode. When the position or posture of the welding head 20 at different welding reference surfaces 111 needs to be fine-tuned, the preset welding depth D is kept unchanged, and the posture adjustment component 40 is adjusted, so as not to affect the subroutine, thereby enabling rapid debugging and ensuring the consistency of welding depth at different welding reference surfaces 111.
[0076] In some embodiments, such as Figure 2 As shown, there are multiple welding heads 20, and each welding head 20 can be driven to move to a different welding reference surface 111 (see Figure 111). Figure 3 At different locations, the target parts 200 at different welding reference surfaces 111 are welded. There are multiple drive assemblies 30, each corresponding to and connected to a multiple welding head 20. In this way, different positions of the target parts 200 can be welded using multiple welding heads 20, thereby improving welding efficiency. In this embodiment, there are two welding heads 20 and two drive assemblies 30.
[0077] In some embodiments, such as Figure 7 As shown, the welding head 20 has an end face 21 at one end near the support member 10, which is combined with... Figure 4 As shown, at reference position W1, end face 21 and welding reference surface 111 (see...) Figure 3 Tangent to improve the accuracy of the reference position W1. Optionally, the end face 21 is a plane, and the welding reference surface 111 is a curved surface. During the process of adjusting the welding head 20 to the reference position W1, the welding head 20 can be moved to the position of the welding reference surface 111 and brought into contact with the welding reference surface 111. Then, the posture of the welding head 20 is adjusted so that the distance between the outer edge of the welding head 20 and the welding reference surface 111 is less than a preset distance, such as 0.1 mm. The position of the welding head 20 at this time is set as the reference position W1. For example, if the end face 21 is constructed as a rectangle, during adjustment, the operator can insert feeler gauges between the four corners of the welding head 20 and the welding reference surface 111 respectively. When the distance between the four corners of the welding head 20 and the welding reference surface 111 is less than the preset distance, the position of the welding head 20 at this time is set as the reference position W1.
[0078] Figure 11 for Figure 1 Side view of the drive component 30 in the illustrated embodiment; Figure 12 for Figure 11 A partial schematic diagram of point B in the illustrated embodiment.
[0079] In some embodiments, such as Figures 4 to 6 As shown, the reference position W1, the welding start position W2, and the welding end position W3 are set at intervals along the welding depth direction A. Figure 11 and Figure 12 As shown, the drive assembly 30 (such as a cylinder) includes a moving member 31, which is connected to the welding head 20 and can move together with the welding head 20 along the welding depth direction A. The ultrasonic welding machine 100 also includes a limiting assembly 80, which includes a first limiting structure 81 and a second limiting structure 82, which are spaced apart along the welding depth direction A. At the welding start position W2, the first limiting structure 81 abuts against the side of the moving member 31 away from the support member 10, and at the welding end position W3, the second limiting structure 82 abuts against the side of the moving member 31 close to the support member 10. Thus, the movement of the moving member 31 and the welding head 20 is restricted by the first limiting structure 81 and the second limiting structure 82 to ensure that the welding head 20 moves to a preset welding depth D, thereby improving the consistency of the welding depth.
[0080] In some embodiments, such as Figure 12 As shown, the ultrasonic welding machine 100 also includes a depth measuring device 50 for measuring the displacement of the moving part 31 along the welding depth direction A. This allows verification that the displacement measured by the depth measuring device 50 is equal to the preset welding depth D. Optionally, the depth measuring device 50 measures the displacement of the moving part 31 along the welding depth direction A using infrared light.
[0081] In some embodiments, such as Figure 2 As shown, there are multiple support members 10, which are used to support different positions of the target member 200. The welding head 20 can be driven to move to the location corresponding to different support members 10, so as to pass through the welding reference surface 111 of different support members 10 (see...). Figure 3 Welding is performed on different positions of the target part 200 using the reference point 100. Thus, by providing multiple support members 10, the support stability of the target part 200 is improved, and the ultrasonic welding machine 100 is made suitable for target parts 200 with larger volumes. In this embodiment, there are three support members 10, which are spaced apart along the width direction of the target part 200.
[0082] In some embodiments, such as Figure 2 As shown, the ultrasonic welding machine 100 also includes a base 60, and multiple support members 10 are respectively disposed on the base 60.
[0083] In some embodiments, such as Figure 3 As shown, the ultrasonic welding machine 100 also includes a clamping assembly 70 for clamping the target part 200 onto the support member 10, so that the target part 200 (see...) Figure 2The clamping assembly 70 is fixed relative to the support member 10. Optionally, the clamping assembly 70 includes a plurality of clamping heads 71, which correspond one-to-one with a plurality of welding reference surfaces 111.
[0084] Figure 13 This is a flowchart of a welding method according to an embodiment of this application.
[0085] See Figure 13 According to another aspect of this application, a welding method is provided, based on the ultrasonic welding machine 100 described in any of the above embodiments, the welding method comprising:
[0086] S110: Position the welding head 20 at the reference position W1.
[0087] S120: Control the drive assembly 30 to move the welding head 20 from the reference position W1 to the welding start position W2, place the target part 200 on the support 10, and control the welding head 20 to start emitting ultrasonic waves.
[0088] S130: Control the drive assembly 30 to move the welding head 20 from the welding start position W2 to the welding end position W3, and control the welding head 20 to stop emitting ultrasonic waves.
[0089] The above welding method eliminates the influence of deformation or dimensional deviation of the target part 200 on the surface position of the target part 200 during the welding process because the welding start position W2 and welding end position W3 of the welding head 20 do not need to be based on the surface of the target part 200. Therefore, it is beneficial to improve the consistency of welding quality.
[0090] In some embodiments, S110 includes:
[0091] S110: Move the welding head 20 to the position of one of the welding reference surfaces 111.
[0092] S120: Control the attitude adjustment component 40 to drive the drive component 30 and the welding head 20 to change their attitude together so that the end face 21 is tangent to the welding reference surface 111.
[0093] This makes it easy to change the orientation of the welding head 20, so that the welding head 20 can be attached to different welding reference surfaces 111 respectively, thereby achieving the corresponding reference position W1.
[0094] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.
Claims
1. An ultrasonic welding machine, characterized in that, include: A support member for supporting a target part to be welded, the support member having a support surface for fitting with the target part, the support surface including a welding reference surface; The welding head has a reference position that is in contact with the welding reference surface. The welding head also has a welding start position and a welding end position. The welding start position is offset from the reference position by a first distance, and the welding end position is offset from the reference position by a second distance. The first distance is greater than the second distance. as well as, A drive assembly, connected to the welding head, is used to move the welding head from the welding start position to the welding end position; There are multiple welding reference surfaces, which are staggered on the support surface. There are multiple reference positions, welding start positions, and welding end positions, and each corresponds one-to-one with the welding reference surface. The welding head can be driven to move to different positions of the welding reference plane in order to weld the target parts at different welding reference planes; The reference position, the welding start position, and the welding end position are respectively set at intervals along the welding depth direction.
2. The ultrasonic welding machine according to claim 1, characterized in that: The supporting surface is curved, and at least two of the welding reference surfaces are not parallel to each other; The ultrasonic welding machine also includes an attitude adjustment component, which is connected to the drive component to drive the drive component and the welding head to change attitude together.
3. The ultrasonic welding machine according to claim 1, characterized in that: The welding head is a plurality of welding heads, and the plurality of welding heads can be driven to move to different positions of the welding reference surface, so as to weld the target parts at different welding reference surfaces respectively; There are multiple drive components, and each drive component corresponds to and is connected to a plurality of welding heads.
4. The ultrasonic welding machine according to claim 1, characterized in that: The welding head has an end face at one end near the support member; At the reference position, the end face is tangent to the welding reference surface.
5. The ultrasonic welding machine according to claim 1, characterized in that: The drive assembly includes a movable component connected to the welding head and capable of moving together with the welding head along the welding depth direction; The ultrasonic welding machine further includes a limiting component; the limiting component includes a first limiting structure and a second limiting structure, the first limiting structure and the second limiting structure being spaced apart along the welding depth direction; At the welding start position, the first limiting structure abuts against the side of the movable member away from the support member; at the welding end position, the second limiting structure abuts against the side of the movable member close to the support member.
6. The ultrasonic welding machine according to claim 5, characterized in that: The ultrasonic welding machine also includes a depth measuring device for measuring the displacement of the moving part along the welding depth direction.
7. The ultrasonic welding machine according to claim 1, characterized in that: There are multiple support members, which are used to support different positions of the target part; the welding head can be driven to move to the location corresponding to different support members, so as to weld different positions of the target part with the welding reference surface of different support members as a reference. And / or, The ultrasonic welding machine also includes a clamping assembly for clamping the target part onto the support.
8. A welding method, characterized in that, Based on the ultrasonic welding machine according to any one of claims 1 to 7, the welding method includes: Position the welding head at the reference position; The drive assembly is controlled to move the welding head from the reference position to the welding start position, the target part is placed on the support, and the welding head is controlled to start emitting ultrasonic waves. The drive assembly is controlled to move the welding head from the welding start position to the welding end position, and the welding head is controlled to stop emitting ultrasonic waves.
9. The welding method according to claim 8, characterized in that: There are multiple welding reference surfaces, which are staggered on the support surface; there are multiple reference positions, welding start positions, and welding end positions, each corresponding to one of the welding reference surfaces; the welding head can be driven to move to different positions of the welding reference surfaces to weld the target parts at different welding reference surfaces; the support surface is curved, and at least two welding reference surfaces are not parallel to each other; the ultrasonic welding machine also includes an attitude adjustment component, which is connected to the drive component to drive the drive component and the welding head to change attitude together; The welding head has an end face at one end near the support member; The step of positioning the welding head at the reference position includes: Move the welding head to the position of one of the welding reference surfaces; The attitude adjustment component is controlled to cause the drive component and the welding head to change their attitude together, so that the end face is tangent to the welding reference surface.