Ultrasonic welding head

Abstract

The utility model discloses an ultrasonic welding head, and belongs to the technical field of ultrasonic welding. The ultrasonic welding head comprises a supporting piece and welding teeth. A plurality of welding teeth are sequentially arranged at the top end of the supporting piece along the X axis, a containing groove is formed between every two adjacent welding teeth, the length of the welding teeth and the length of the containing grooves penetrate through the supporting piece along the Y axis, and the welding teeth are used for ultrasonic welding of the first piece and the second piece. According to the ultrasonic welding head, it can be guaranteed that ultrasonic energy is evenly distributed at the whole top end of the supporting piece through mutual cooperation of the welding teeth and the containing grooves, and therefore the welding strength can be guaranteed, the problem of material overflowing can be avoided, and the welding quality of a first piece and a second piece is guaranteed.

Description

Technical Field

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

[0002] Currently, ultrasonic welding technology is widely used between two different materials, such as welding copper plates and aluminum plates; among them, such as Figure 1 and Figure 2 As shown, the welding teeth 1' of the ultrasonic welding head for welding copper plates and aluminum plates are usually pyramidal in shape, that is, the welding teeth 1' are square pyramidal in shape.

[0003] However, since the pyramid-shaped weld tooth 1' is an independent single tooth, that is, as... Figure 1 and Figure 2 As shown, arranging the welding teeth 1' in a 3*3 or 4*4 matrix arrangement can easily lead to the following problems: 1. The ultrasonic energy is focused on the tips of each welding tooth 1', making it difficult to distribute the welding energy evenly over the welding area. This means that the energy density on a single welding tooth 1' is too high, which can easily cause local overheating at the welding point, resulting in scorching and deformation of the copper or aluminum plate, and failing to guarantee welding quality; 2. The copper and aluminum plates do not have enough space to flow during the welding process, resulting in a lot of material overflowing during welding; 3. Due to the uneven distribution of ultrasonic energy at the outer edge of the welding tooth 1', poor welding at the outer edge or overflow is likely to occur; 4. Because the tips of the pyramid-shaped welding teeth 1' are relatively sharp and the force is concentrated, cracks or even breakage may occur after long-term use, requiring regular replacement of the ultrasonic welding head and increasing maintenance costs.

[0004] To address the above problems, there is an urgent need for an ultrasonic welding head. Utility Model Content

[0005] The purpose of this invention is to provide an ultrasonic welding head that can ensure the uniform distribution of ultrasonic energy across the entire top of the support through welding teeth and receiving grooves, thereby ensuring welding strength and avoiding overflow, thus guaranteeing the welding quality of the first and second parts.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Ultrasonic welding head, including:

[0008] Support components;

[0009] Welding teeth: Multiple welding teeth are arranged sequentially along the X-axis at the top of the support member, and a receiving groove is formed between two adjacent welding teeth. The length of the welding teeth and the length of the receiving groove both pass through the support member along the Y-axis. Each welding tooth is used for ultrasonic welding of the first piece and the second piece.

[0010] Alternatively, the support member may have a square, elliptical, or circular outline.

[0011] As an optional solution, the edge of the end face of the support member with the welding tooth is provided with a chamfer, the depth of the chamfer is greater than the tooth depth of the welding tooth, and the angle of the chamfer is 20°-45°.

[0012] As an optional solution, the angle between the length direction of the welding tooth and the vibration direction of the support is 45°-90°.

[0013] As an optional solution, the welding teeth include:

[0014] The top surface, the length of which extends along the Y-axis;

[0015] Two first inclined surfaces, with the top surface disposed between the two first inclined surfaces, one end of the first inclined surface connected to the top surface, the other end of the first inclined surface connected to the support member, and the tops of the two first inclined surfaces gradually approaching each other.

[0016] As an optional embodiment, the top surface of each of the welding teeth is located on a first sphere, and the center of the first sphere is located on the central axis of the support member along the Z-axis. The top surfaces of each of the welding teeth have a maximum height difference H1 along the Y-axis, and the top surfaces of each of the welding teeth have a maximum height difference H2 along the X-axis.

[0017] As an optional embodiment, the top surface of each of the welding teeth is located on an ellipsoid, with the Y-axis being the minor axis of the ellipsoid and the X-axis being the major axis of the ellipsoid. The top surfaces of each of the welding teeth have a maximum height difference H3 along the Y-axis and a maximum height difference H4 along the X-axis.

[0018] Alternatively, the top surface can be a plane or a curved surface.

[0019] As an optional embodiment, the bottom end of each of the first inclined surfaces is located on the second sphere, the center of the second sphere is concentric with the center of the first sphere, and the diameter of the second sphere is smaller than the diameter of the first sphere. The difference between the diameter of the second sphere and the diameter of the first sphere is the tooth depth of the weld tooth.

[0020] As an optional solution, the receiving groove includes:

[0021] Two second inclined surfaces, the top ends of the second inclined surfaces are connected to the top surface, and the bottom ends of the two second inclined surfaces gradually approach each other;

[0022] In one of two adjacent welding teeth, the first inclined surface of one welding tooth is a second inclined surface of the receiving groove, and the first inclined surface of the other welding tooth is another second inclined surface of the receiving groove.

[0023] As an optional solution, a first fillet is provided between the two second inclined surfaces in the receiving groove; or,

[0024] The receiving groove also includes a bottom end face, the length of which extends along the Y-axis. The bottom end face is disposed between two second inclined surfaces, and the bottom end of the second inclined surfaces is connected to the bottom end face. In the receiving groove, a second rounded corner is provided between the bottom end face and the second inclined surfaces.

[0025] As an alternative, in one of the receiving grooves, the included angle α between the two second inclined surfaces is 30°-120°.

[0026] As an optional solution, along the arrangement direction of each of the welding teeth, the outer edges of the two outermost welding teeth are connected to pressure tables, the pressure tables are disposed on the top surface of the support member, and the size of the pressure tables on the Z-axis is 0.8-1.2 times the tooth depth.

[0027] The beneficial effects of this utility model are as follows:

[0028] By arranging multiple welding teeth sequentially along the X-axis at the top of the support member, and forming receiving grooves between adjacent welding teeth, with the lengths of both welding teeth and receiving grooves penetrating the support member along the Y-axis, each welding tooth is used for ultrasonic welding of the first and second pieces. That is, welding teeth, receiving grooves, welding teeth, receiving grooves... are sequentially formed along the X-axis at the top of the support member, ensuring that the lengths of both welding teeth and receiving grooves penetrate the support member along the Y-axis. This allows for the formation of multiple spaced long straight teeth (welding teeth) at the top of the support member. Compared to the existing technology that uses independently spaced quadrangular pyramids, the formed receiving grooves and welding teeth ensure that ultrasonic energy is evenly distributed across the entire top of the support member: 1. This ensures that ultrasonic energy is evenly distributed across each welding tooth. 1. The ultrasonic welding head is evenly distributed across the weld area by the teeth and various receiving grooves, thus avoiding localized overheating at the weld point due to excessive energy density on a single welding tooth, thereby ensuring the welding quality of the first and second parts; 2. It allows for a large flow space within the receiving grooves during the welding process of the first and second parts, reducing material overflow and keeping the weld area clean; 3. Because the ultrasonic energy is evenly distributed at the outer edge of the welding tooth, it ensures good welding at the outer edge of the welding tooth and prevents material overflow at this location; 4. The relatively flat tooth tip reduces stress concentration, making it less prone to cracking or even breakage after long-term use, thus eliminating the need for regular replacement of the ultrasonic welding head and reducing maintenance costs. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of an ultrasonic welding head in the prior art;

[0030] Figure 2 This is a top-view magnified schematic diagram of the welding teeth in the existing technology;

[0031] Figure 3 This is a schematic diagram of the structure of the ultrasonic welding head (with a first part and a second part) provided in this embodiment of the utility model. Figure 1 ;

[0032] Figure 4 This is a schematic diagram of the structure of the ultrasonic welding head provided in this embodiment of the utility model. Figure 2 ;

[0033] Figure 5 This is a partially enlarged structural schematic diagram of the welding tooth provided in an embodiment of the present utility model;

[0034] Figure 6 This is a front view of the ultrasonic welding head provided in this embodiment of the utility model;

[0035] Figure 7 yes Figure 6A magnified schematic diagram of the partial structure at point A in the middle;

[0036] Figure 8 This is a schematic diagram of the structure of an ultrasonic welding head provided in another embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1'-Welding teeth;

[0039] 10 - First item; 20 - Second item;

[0040] 1-Support component; 11-Chamfer; 2-Welding tooth; 21-Top surface; 22-First inclined surface; 3-Receiving groove; 31-Bottom surface; 32-Second inclined surface; 4-Connector; 5-Pressure table;

[0041] α - The angle between the two second inclined planes. Detailed Implementation

[0042] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0043] Any feature disclosed in this specification, unless specifically stated otherwise, may be replaced by other equivalent or similar features. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features. Throughout this specification, the same reference numerals indicate the same elements.

[0044] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] like Figures 3 to 7 As shown, this embodiment proposes an ultrasonic welding head for ultrasonic welding of a first part 10 and a second part 20, ensuring the welding strength and effect between them while effectively preventing material overflow during the welding process. In this embodiment, the first part 10 can be a copper plate, and the second part 20 can be an aluminum plate. The specific types of the first part 10 and the second part 20 are not limited, and they can be made of different materials, or even the same material.

[0046] Specifically, such as Figure 3 and Figure 4As shown, the ultrasonic welding head includes a support member 1 and multiple welding teeth 2. Multiple welding teeth 2 are arranged sequentially along the X-axis at the top of the support member 1, with a receiving groove 3 formed between adjacent welding teeth 2. The lengths of both the welding teeth 2 and the receiving grooves 3 extend through the support member 1 along the Y-axis. Each welding tooth 2 is used for ultrasonic welding of a first piece 10 and a second piece 20. During welding, the first piece 10 can be located below or above the second piece 20; no specific limitation is made here.

[0047] In this embodiment, the ultrasonic welding head differs from the prior art in that the shape and arrangement of the welding teeth 2 are altered; specifically, the welding teeth 2 are dam-shaped straight teeth. Multiple welding teeth 2 are arranged sequentially along the X-axis at the top of the support member 1, and a receiving groove 3 is formed between adjacent welding teeth 2. Both the length of the welding teeth 2 and the length of the receiving groove 3 penetrate the support member 1 along the Y-axis, allowing each welding tooth 2 to be used for ultrasonic welding of the first piece 10 and the second piece 20. That is, as... Figure 4 As shown, welding teeth 2, receiving grooves 3, welding teeth 2, receiving grooves 3, ... are sequentially formed along the X-axis at the top of the support member 1. The lengths of the welding teeth 2 and the receiving grooves 3 are both extended along the Y-axis through the support member 1, allowing multiple spaced elongated straight teeth (welding teeth 2) to be formed at the top of the support member 1. Compared to the existing technology which uses independently spaced quadrangular pyramids, the formed receiving grooves 3 and welding teeth 2 ensure that ultrasonic energy is evenly distributed across the entire top of the support member 1: 1. This allows ultrasonic energy to be evenly distributed across each welding tooth 2 and each receiving groove 3, thereby evenly distributing welding energy across the weld area and avoiding localized overheating of the weld point due to excessive energy density on a single welding tooth 2. This ensures the welding quality of the first piece 10 and the second piece 20; 2. It allows for a large flow space within the receiving groove 3 during the welding process, reducing material overflow and keeping the weld area clean; 3. Because the ultrasonic energy is distributed relatively evenly at the outer edge of the welding tooth 2, this uniform distribution helps the materials of the first piece 10 and the second piece 20 to fuse better during the welding process, thus ensuring good welding at the outer edge of the welding tooth 2 and preventing overflow at this position; 4. The tips of the welding teeth 2 are relatively flat, reducing stress concentration and making them less prone to cracking or even breakage after long-term use, thus eliminating the need for regular replacement of the ultrasonic welding head and reducing maintenance costs.

[0048] It is worth noting that, since the ultrasonic energy can be evenly distributed in each welding tooth 2 and each receiving groove 3, the ultrasonic energy can be evenly distributed in the welding area, thereby increasing the welding area between the ultrasonic welding head and the first piece 10 / second piece 20, thus ensuring a high welding strength between the first piece 10 and the second piece 20, and ensuring the welding reliability between the first piece 10 and the second piece 20.

[0049] Specifically, such as Figure 3 and Figure 4 As shown, the ultrasonic welding head also includes a connector 4, and a support 1 is mounted on the connector 4. The connector 4 is used to connect to the welding host, so as to realize the installation of the entire ultrasonic welding head onto the welding host. The welding host can adopt a welding structure commonly used in the prior art. The connector 4 can specifically be a cylindrical structure, a square block structure, or other structures. The support 1 can specifically be a square block structure, a cylindrical structure, an elliptical cylindrical structure, or other structures. Here, the specific structure of the connector 4 and the support 1 is not limited.

[0050] Furthermore, such as Figures 3 to 6 As shown, the outline of support 1 is square, elliptical, or circular, resulting in a more uniform stress distribution on support 1. In this embodiment, the outline of support 1 is specifically a square, which offers better stability. Figure 8 As shown, in another embodiment, the outline of the support member 1 is specifically elliptical, which combines the advantages of both square and circular shapes to a certain extent. This provides better stress distribution and is adaptable to welding of the first piece 10 and the second piece 20 with special shapes. In other embodiments, the outline of the support member 1 is specifically circular. Due to the symmetry of the circle, the vibration generated by the support member 1 can be evenly distributed on the circular support member 1, helping to reduce local stress concentration on the support member 1, lowering the risk of breakage, and extending the service life of the support member 1. Here, the specific outline of the support member 1 is not limited.

[0051] Specifically, such as Figure 8 As shown, the edge of the end face of the support member 1 with welding teeth 2 is provided with a chamfer 11. The depth of the chamfer 11 is greater than the tooth depth of the welding teeth 2, and the angle of the chamfer 11 is 20°-45°. The angle of the chamfer 11 specifically refers to the angle between the chamfered surface and the side wall of the support member 1. The chamfer 11 can improve the overflow height and overflow direction of the edge of the welding teeth 2, thereby ensuring a better welding effect. The depth of the chamfer 11 specifically refers to the distance from the vertex of the chamfer 11 near the edge or corner of the end face of the support member 1 to the edge of the chamfer 11 near the side wall of the support member 1.

[0052] Specifically, the angle between the length direction of the welding tooth 2 and the vibration direction of the support member 1 is 45°-90°, and the length direction of the welding tooth 2 is parallel to the Y-axis. In this embodiment, the angle between the length direction of the welding tooth 2 and the vibration direction of the support member 1 is 90°, that is, the vibration direction of the support member 1 in this embodiment is parallel to the X-axis. Here, the vibration direction of the support member 1 is not specifically limited.

[0053] By setting the angle between the length direction of the welding tooth 2 and the vibration direction of the support 1 to 45°-90°, the vibration direction of the support 1 can be adjusted according to specific welding requirements. This improves welding flexibility and quality. Furthermore, the smaller the angle compared to 90°, the better the anti-overflow effect. After the welding tooth 2 penetrates the first piece 10 or the second piece 20, it will push the first piece 10 or the second piece 20 with its entire tooth side surface in the vibration direction of the support 1. This reduces the projected area of ​​the tooth side surface of the welding tooth 2 in the vibration direction of the support 1, thereby reducing the overflow volume and further ensuring welding quality.

[0054] Furthermore, such as Figures 4 to 7 As shown, the welding tooth 2 includes a top surface 21 and two first inclined surfaces 22; wherein, the length of the top surface 21 extends along the Y-axis; the top surface 21 is disposed between the two first inclined surfaces 22, one end of the first inclined surface 22 is connected to the top surface 21, and the other end of the first inclined surface 22 is connected to the support member 1, and the tops of the two first inclined surfaces 22 gradually approach each other to form a welding tooth 2 with an isosceles trapezoidal cross-sectional shape. The two first inclined surfaces 22 have the same dimensions.

[0055] It is worth noting that, such as Figure 5 As shown, the tip of the welding tooth 2 is specifically a long, flat top surface 21, meaning that the top surface 21 in this embodiment is a plane. This makes the tip of the welding tooth 2 a long, flat plane with a certain area, resulting in a relatively gentle tip. Compared to the single pyramidal welding tooth 2 in the prior art, this makes the structure of the welding tooth 2 more robust, ensuring a lower risk of breakage of the ultrasonic welding head under high-frequency vibration, thereby improving the stability and reliability of the ultrasonic welding head. In other embodiments, the tip of the welding tooth 2, i.e., the top surface 21, can also be a curved or pointed structure. When the top surface 21 is curved, not only can the welding energy be more uniform, preventing the welding energy from concentrating on a portion of the sharp point of the top surface 21, but it also makes the removal of the welding tooth 2 from the first piece 10 or the second piece 20 simpler and easier. Here, the specific structure of the top surface 21 is not limited.

[0056] Furthermore, the welding tooth 2 is made of wear-resistant material, which makes the tip of the welding tooth 2 less prone to wear, thereby making the entire ultrasonic welding head structure relatively wear-resistant and thus better extending the service life of the entire ultrasonic welding head.

[0057] In this embodiment, the top surface 21 of each welding tooth 2 is located on the same horizontal plane, that is, the top surface 21 of each welding tooth 2 is flush.

[0058] In another embodiment, such as Figure 8 As shown, the top surface 21 of each welding tooth 2 is located on the first sphere, and the center of the first sphere is located on the central axis of the support member 1 along the Z-axis, so that there is a maximum height difference H1 between the top surfaces 21 of each welding tooth 2 along the Y-axis, and a maximum height difference H2 between the top surfaces 21 of each welding tooth 2 along the X-axis. Since the dimension of the welding tooth 2 along the length direction of the Y-axis is smaller than the dimension of each welding tooth 2 in the arrangement direction of the X-axis, H2 is very small compared to H1.

[0059] In other embodiments, the top surface 21 of each welding tooth 2 is located on an ellipsoid, with the Y-axis being the minor axis of the ellipsoid and the X-axis being the major axis of the ellipsoid, such that there is a maximum height difference H3 between the top surfaces 21 of each welding tooth 2 along the Y-axis and a maximum height difference H4 between the top surfaces 21 of each welding tooth 2 along the X-axis, where H4-H3 is less than H2-H1.

[0060] By placing the top surface 21 of each welding tooth 2 on the first spherical surface or on the ellipsoidal surface, a larger welding depth can be achieved at the center of the support member 1, thereby enabling a more uniform welding effect in the entire welding area and ensuring better welding quality.

[0061] In this embodiment, the bottom ends of the first inclined surfaces 22 of each welding tooth 2 are located on the same horizontal plane, that is, the bottom ends of the first inclined surfaces 22 of each welding tooth 2 are flush.

[0062] In other embodiments, the bottom end of each first inclined surface 22 is located on the second sphere, the center of the second sphere is concentric with the center of the first sphere, and the diameter of the second sphere is smaller than the diameter of the first sphere. The difference between the diameter of the second sphere and the diameter of the first sphere is the tooth depth of the welding tooth 2, so that the entire welding area can have a more uniform welding effect.

[0063] Specifically, such as Figures 4 to 7 As shown, the receiving groove 3 includes two second inclined surfaces 32, the top ends of which are connected to the top surface 21, and the bottom ends of the two second inclined surfaces 32 gradually approach each other to form a receiving groove 3 with an inverted isosceles trapezoidal cross-sectional shape. The two second inclined surfaces 32 are the same size.

[0064] Specifically, such as Figure 5 and Figure 7 As shown, in two adjacent welding teeth 2 on the X-axis, that is, between two adjacent welding teeth 2, there is a receiving groove 3. The first inclined surface 22 of one welding tooth 2 is a second inclined surface 32 of the receiving groove 3, and the first inclined surface 22 of the other welding tooth 2 is another second inclined surface 32 of the receiving groove 3. That is, the first inclined surface 22 of the welding tooth 2 is the second inclined surface 32 of the receiving groove 3.

[0065] Furthermore, in another embodiment, such as Figure 8 As shown, in a receiving groove 3, a first rounded corner is provided between the two second inclined surfaces 32, that is, the two second inclined surfaces 32 form the first rounded corner by directly intersecting; or, in this embodiment, as Figure 5 As shown, the receiving groove 3 also includes a bottom end face 31. The length of the bottom end face 31 extends along the Y-axis. The bottom end face 31 is disposed between two second inclined surfaces 32. The bottom ends of the second inclined surfaces 32 are connected to the bottom end face 31. In a receiving groove 3, a second rounded corner is provided between the bottom end face 31 and the two second inclined surfaces 32 respectively.

[0066] By using the first or second rounded corner, the flow space of the materials of the first piece 10 and the second piece 20 within the receiving groove 3 during the welding process is further increased, which better reduces material overflow during welding and further maintains the cleanliness of the weld area. At the same time, the setting of the first or second rounded corner can make the pressure of the materials of the first piece 10 and the second piece 20 within the receiving groove 3 more uniform, so that the materials of the first piece 10 and the second piece 20 can be better fused during the welding process through uniform pressure distribution, thereby reducing the occurrence of overflow. Furthermore, the setting of the first or second rounded corner can also prevent the materials of the first piece 10 and / or the second piece 20 from getting stuck in sharp edges, better ensuring the fluidity of the materials of the first piece 10 and / or the second piece 20.

[0067] Specifically, the radius R of the first fillet is 0.2mm-1.5mm, and the radius R of the second fillet is 0.2mm-0.4mm. On the one hand, this avoids the first or second fillet being too large, which would affect the uniform distribution of pressure of the materials of the first piece 10 and the second piece 20 within the receiving groove 3. On the other hand, it avoids the first or second fillet being too small, which would fail to provide a large flow space for the materials of the first piece 10 and the second piece 20 during the welding process.

[0068] Furthermore, such as Figure 7As shown, in a receiving groove 3, the included angle α between the two second inclined surfaces 32 is 30°-120°, so that the arrangement between the two inclined surfaces is more reasonable, thereby ensuring that the space size of the formed receiving groove 3 is more suitable, which is conducive to ensuring that the material of the first piece 10 and the second piece 20 flows more evenly in the receiving groove 3, which in turn is conducive to the uniform transmission of ultrasonic energy, thereby reducing the scorching, deformation and overflow of the material of the first piece 10 and the second piece 20. Furthermore, by setting the included angle α between the two second inclined surfaces 32 to 30°-120°, on the one hand, it can avoid the problems of small size, low strength, and short life of a single welding tooth 2 due to an excessively small included angle α, and it can also avoid the problem of difficulty in removing material between the first piece 10 or the second piece 20 after welding when the first piece 10 or the second piece 20 is wrapped on the welding tooth 2 due to an excessively small included angle α; on the other hand, it can avoid the problem of excessively large size of a single welding tooth 2 due to an excessively large included angle α, which would result in an excessively sparse arrangement of each welding tooth 2 along the X-axis, a small number of welding teeth 2, and excessively concentrated welding energy, leading to uneven welding effect.

[0069] Furthermore, such as Figure 8 As shown, along the arrangement direction of each welding tooth 2, the outer edges of the two outermost welding teeth 2 are connected to pressure tables 5. The pressure tables 5 are set on the top surface of the support 1, and the size of the pressure tables 5 on the Z-axis is 0.8-1.2 times the tooth depth.

[0070] By setting the pressure table 5, it is possible to ensure that during the welding process, the material of the first piece 10 and / or the second piece 20 that overflows from the outer edge of the support 1 is pressed down by the pressure table 5, thereby better ensuring the welding quality. Furthermore, setting the size of the pressure table 5 on the Z-axis to 0.8-1.2 times the tooth depth can not only avoid the problem of limited pressing depth of the welding teeth 2 due to the size being too small, but also avoid the problem of not achieving the flattening effect due to the size being too large.

[0071] In this embodiment, the ultrasonic welding head is equipped with isosceles trapezoidal welding teeth 2 that are long straight teeth, and a receiving groove 3 is formed between two adjacent welding teeth 2. The mutual cooperation between the receiving groove 3, which is set through the Y-axis, and the welding teeth 2 ensures that the ultrasonic energy is uniformly transmitted during the welding process, thereby reducing the scorching, deformation, and overflow of the materials of the first piece 10 and the second piece 20, and thus ensuring a better welding effect between the first piece 10 and the second piece 20.

[0072] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. An ultrasonic welding horn characterized by, The utility model relates to a support (1) for ultrasonic welding of a first piece (10) and a second piece (20), comprising: a plurality of welding teeth (2) arranged along the X-axis on the top end of the support (1) in sequence, an accommodating groove (3) is formed between two adjacent welding teeth (2), the length of the welding tooth (2) and the length of the accommodating groove (3) both extend through the support (1) along the Y-axis, and each welding tooth (2) is used for ultrasonic welding of a first piece (10) and a second piece (20). The support (1) is square, oval or circular in shape.

2. The ultrasonic welding horn of claim 1, wherein, The edge of the end face of the support (1) provided with the welding tooth (2) is provided with a chamfer (11), the depth of the chamfer (11) is greater than the tooth depth of the welding tooth (2), and the angle of the chamfer (11) is 20-45 degrees.

3. The ultrasonic welding horn of claim 1, wherein, The angle between the length direction of the welding tooth (2) and the vibration direction of the support (1) is 45-90 degrees.

4. The ultrasonic welding horn of claim 1, wherein, The welding tooth (2) comprises:

5. The ultrasonic welding horn of any of claims 1-4, wherein, a top end face (21) extending along the Y-axis in length; two first inclined faces (22) between which the top end face (21) is arranged, one end of the first inclined face (22) being connected to the top end face (21), the other end of the first inclined face (22) being connected to the support (1), and the top ends of the two first inclined faces (22) gradually approach each other. The top end face (21) of each welding tooth (2) is located on a first spherical surface, the center of the first spherical surface is located on the central axis of the support (1) along the Z-axis, the maximum height difference H1 between the top end faces (21) of the welding teeth (2) is along the Y-axis, and the maximum height difference H2 between the top end faces (21) of the welding teeth (2) is along the X-axis.

6. The ultrasonic welding horn of claim 5, wherein, The top end face (21) of each welding tooth (2) is located on an ellipsoidal surface, the Y-axis is the minor axis of the ellipsoidal surface, and the X-axis is the major axis of the ellipsoidal surface, the maximum height difference H3 between the top end faces (21) of the welding teeth (2) is along the Y-axis, and the maximum height difference H4 between the top end faces (21) of the welding teeth (2) is along the X-axis.

7. The ultrasonic welding horn of claim 5, wherein, The top end face (21) is a plane or a curved surface.

8. The ultrasonic welding horn of claim 5, wherein, The bottom end of each first inclined face (22) is located on a second spherical surface, the center of the second spherical surface is concentric with the center of the first spherical surface, the diameter of the second spherical surface is smaller than the diameter of the first spherical surface, and the difference between the diameter of the second spherical surface and the diameter of the first spherical surface is the tooth depth of the welding tooth (2).

9. The ultrasonic welding horn of claim 6, wherein, The accommodating groove (3) comprises:

10. The ultrasonic welding horn of claim 5, wherein, two second inclined faces (32) connected to the top end face (21) at the top end and gradually approaching each other at the bottom end; wherein, in two adjacent welding teeth (2), the first inclined face (22) of one of the welding teeth (2) is one of the second inclined faces (32) of the accommodating groove (3), and the first inclined face (22) of the other welding tooth (2) is the other second inclined face (32) of the accommodating groove (3). ​ 11. The ultrasonic welding horn of claim 10, wherein the horn is formed from a material having a modulus of elasticity of at least 70 GPa. The first round corner is arranged between the two second inclined surfaces (32) in the accommodating groove (3); or, The accommodating groove (3) further comprises a bottom end surface (31), the length of the bottom end surface (31) extends along the Y axis, the bottom end surface (31) is arranged between the two second inclined surfaces (32), the bottom end of the second inclined surface (32) is connected to the bottom end surface (31), and the second round corner is arranged between the bottom end surface (31) and the second inclined surface (32) in the accommodating groove (3).

12. The ultrasonic welding horn of claim 10 or 11, wherein, The included angle α between the two second inclined surfaces (32) in one of the accommodating grooves (3) is 30°-120°.

13. The ultrasonic welding horn of any one of claims 1-4, wherein, The outer edges of the two outermost weld teeth (2) are connected with a pressure table (5) along the arrangement direction of the weld teeth (2), the pressure table (5) is arranged on the top end surface of the support (1), and the size of the pressure table (5) on the Z axis is 0.8-1.2 times the tooth depth.

Images