CN216990324U - Ultrasonic welding head and ultrasonic welding equipment with same - Google Patents
Ultrasonic welding head and ultrasonic welding equipment with same Download PDFInfo
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- CN216990324U CN216990324U CN202220677027.4U CN202220677027U CN216990324U CN 216990324 U CN216990324 U CN 216990324U CN 202220677027 U CN202220677027 U CN 202220677027U CN 216990324 U CN216990324 U CN 216990324U
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Abstract
The utility model discloses an ultrasonic welding head and ultrasonic welding equipment with the same, wherein the ultrasonic welding head comprises: welding a rod; welding head portion, welding head portion locate the welding rod along length direction's one end, and welding head portion includes bonding tool body and welding tooth group, and welding tooth group includes the tooth that welds that a plurality of intervals were arranged, and bonding tool body is formed into the face of weld at the at least side surface of first direction, and the face of weld includes the welding tooth district, and the welding tooth includes: the outer circumferential surface of the welding tooth seat is formed into an aspheric surface; the welding tooth head is connected to one side, far away from the welding tooth area, of the welding tooth base, the projection of the welding tooth head on the reference surface is located in the projection of the welding tooth base on the reference surface, the reference surface is perpendicular to the first direction, and at least part of the outer surface of the welding tooth head is formed into a spherical surface. According to the ultrasonic welding head disclosed by the utility model, the distance between two adjacent welding teeth can be changed or the height of the welding teeth can be adjusted by changing the included angle between the circumferential surface of the welding tooth seat and the welding tooth area, so that the welding teeth can be suitable for welding lugs with different layers.
Description
Technical Field
The utility model relates to the technical field of ultrasonic welding, in particular to an ultrasonic welding head and ultrasonic welding equipment with the same.
Background
In the related art, ultrasonic welding is used to weld a battery tab, in which high-frequency vibration waves are transmitted to the surfaces of two objects to be welded, and the surfaces of the two objects are rubbed against each other under pressure to form fusion between molecular layers. When the conventional ultrasonic welding head is used for welding a pole lug, the phenomenon that the pole lug is not pressed is easily caused due to the shape of the welding head, so that the problems of poor welding quality, false welding quality and the like are caused.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides an ultrasonic welding head which can improve the welding quality of a tab.
The utility model also provides ultrasonic welding equipment with the ultrasonic welding head.
An ultrasonic horn according to a first aspect of the utility model comprises: welding a rod; the welding head portion, the bonding tool portion is located the one end of welding rod along length direction, the bonding tool portion includes bonding tool body and welding tooth group, welding tooth group includes the welding tooth that a plurality of intervals were arranged, the bonding tool body forms the face of weld at least one side surface of first direction, the face of weld is including welding the tooth region, the welding tooth includes: the welding tooth seat is connected with the welding tooth area, and the peripheral surface of the welding tooth seat is formed into an aspheric surface; the welding tooth head is connected to one side, far away from the welding tooth area, of the welding tooth seat, the projection of the welding tooth head on a reference surface is located in the projection of the welding tooth seat on the reference surface, the reference surface is perpendicular to the first direction, at least part of the outer surface of the welding tooth head is formed into a spherical surface, and the outer peripheral surface of the welding tooth head is connected with the outer peripheral surface of the welding tooth seat.
According to the ultrasonic welding head disclosed by the embodiment of the utility model, the welding surface of the welding head body is constructed to comprise the welding tooth area, the welding tooth comprises the welding tooth seat and the welding tooth head, wherein the outer surface of the welding tooth seat is formed to be an aspheric surface, and at least part of the outer surface of the welding tooth head is formed to be a spherical surface, so that under the condition that the total number of the welding teeth in the welding tooth area is constant, the distance between two adjacent welding teeth can be changed by changing the included angle between the circumferential surface of the welding tooth seat and the welding tooth area; and under the certain circumstances of interval of two adjacent welding teeth, can adjust the height of welding the tooth through the contained angle that changes between the circumferential surface of welding the toothholder and the welding tooth district to the messenger welds the welding that the tooth can be suitable for the utmost point ear of the different number of piles, from this, is favorable to reducing rosin joint or pseudo-soldering risk, improves welding quality.
According to some embodiments of the utility model, the outer peripheral surface of the tip seat is formed as a curved surface, and the tip seat has a cross-sectional area that gradually increases in a direction from the tip to the tip region.
According to some embodiments of the utility model, the weld toothholder is frustoconical.
According to some embodiments of the utility model, the tip region is formed as a plane, the outer peripheral surface of the tip seat extends obliquely away from the central axis of the tip seat in a direction from the tip to the tip region, and an angle between the outer peripheral surface of the tip seat and the tip region ranges from 45 ° to 90 °.
According to some embodiments of the utility model, the weld face comprises: the non-welding tooth area is lower than the welding tooth area in the first direction, the non-welding tooth area is located on the outer periphery side of the welding tooth area and arranged around the welding tooth area, and the outer periphery edge of the non-welding tooth area is spaced from the outer periphery edge of the welding surface.
Further, the land is formed to be planar and perpendicular to the first direction, and the non-land is formed to be a slope extending obliquely in a direction from an outer peripheral edge of the land to an outer peripheral edge of the bonding surface.
According to some embodiments of the utility model, the non-tooth zone is planar and the angle between the non-tooth zone and the tooth zone ranges from 1 ° to 15 °.
Furthermore, a transition area is connected between the welding tooth area and the non-welding tooth area, and the transition area is formed into a curved surface and is connected with the welding tooth area and the non-welding tooth area in a smooth transition manner; and/or the periphery of the welding surface is formed into a fillet area along a fillet, and the fillet area is positioned on the periphery side of the non-welding tooth area and surrounds the non-welding tooth area.
According to some embodiments of the utility model, a surface of the tip remote from the tip seat is formed with a land area, the land area being a plane parallel to the tip area.
Further, the platform area is circular, and the diameter of the platform area is 0.1mm-2 mm.
According to some embodiments of the utility model, the tip is substantially in the form of a segment of a sphere, and the remaining surface of the tip excluding the plateau region is formed as a sphere.
According to some embodiments of the utility model, a circumferential surface of the tooth holder is in smooth connection with a circumferential surface of the tooth head; and/or, the welding tooth further comprises a transition part, the transition part is connected between the welding tooth seat and the welding tooth area, the transition part is arc-shaped, and the radius R of the transition part is 0.1mm-2 mm.
According to some embodiments of the utility model the spacing between the outer contour of the tooth region and the tooth corresponding to the outer contour of the adjacent tooth region in the set of teeth is in the range of 0-2 mm.
An ultrasonic welding apparatus according to a second aspect of the present invention includes: the ultrasonic horn according to the first aspect of the present invention.
According to the ultrasonic welding equipment provided by the embodiment of the utility model, by arranging the ultrasonic welding head of the embodiment, when a plurality of layers of tabs are welded, the warping of the portions, positioned around the welding marks, of the tabs can be relieved, so that the stress of the tabs is reduced, and the problems of cracks generated in the tabs in the welding process or other welding quality problems caused by stress concentration are avoided.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
FIG. 1 is a schematic view of an ultrasonic horn according to an embodiment of the present invention;
FIG. 2 is a schematic view of another angle of the ultrasonic horn shown in FIG. 1;
FIG. 3 is an enlarged view of encircled portion A in FIG. 2;
FIG. 4 is a schematic view of yet another angle of the ultrasonic horn shown in FIG. 1;
FIG. 5 is an enlarged view of circled portion B of FIG. 4;
FIG. 6 is an enlarged view of circled area C in FIG. 5;
fig. 7 is an enlarged view of circled portion D in fig. 5.
Reference numerals:
ultrasonic horn 100:
the welding rod 1 is welded on the welding rod,
the horn tip 2, the horn body 20, the weld face 21, the tooth area 211, the non-tooth area 212, the transition area 213, the fillet area 214,
the welding teeth 22, the welding teeth seat 221, the welding teeth head 222, the platform area 223, the transition part 224 and the welding teeth group 23.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
An ultrasonic horn 100 according to an embodiment of the first aspect of the present invention will now be described with reference to fig. 1-7.
As shown in fig. 1, an ultrasonic horn 100 according to an embodiment of the first aspect of the present invention includes: a welding rod 1 and a welding head part 2.
Specifically, the welding head portion 2 is provided at one end of the welding rod 1 in the length direction (e.g., a direction a shown in fig. 1), and the welding head portion 2 may include a welding head body 20 and a welding tooth group 23, wherein the welding tooth group 23 includes a plurality of welding teeth 22 arranged at intervals, and at least one side surface of the welding head body 20 in a first direction (e.g., a direction b shown in fig. 1) is formed as a welding surface 21.
The bonding surface 21 may include a tooth region 211, with the set of teeth 23 being disposed in the tooth region 211. The welding teeth 22 may include: a tooth holder 221 and a tooth head 222. Wherein, the tooth holder 221 is connected with the tooth region 211, the outer peripheral surface of the tooth holder 221 is formed to be aspheric, for example, the outer peripheral surface of the tooth holder 221 can be formed to be a conical surface, a cylindrical surface, etc., the tooth head 222 is connected to the side of the tooth holder 221 away from the tooth region 211, the projection of the tooth head 222 on the reference surface is located in the projection of the tooth holder 221 on the reference surface, at least a part of the outer surface of the tooth head 222 is formed to be spherical, wherein the reference surface can be a plane perpendicular to the first direction, for example, the plane where the tooth region 211 is located.
For example, as shown in fig. 1, the welding rod 1 may be formed in a cylindrical shape, and the horn portion 2 is formed at one end of the welding rod 1 in the axial direction, the horn portion 2 including a horn body 20 and an array of teeth 23. One side surface of the horn body 20 in the first direction may be formed as the weld surface 21, or both side surfaces of the horn body 20 in the first direction may be formed as the weld surfaces 21.
The face of weld 21 is including welding tooth region 211, and wherein, welds tooth group 23 and can include a plurality of welding teeth 22, and a plurality of welding teeth 22 can be the rectangular array of multirow multiseriate and arrange, welds tooth group 23 and can be located welding tooth region 211 to, two adjacent welding teeth 22 intermediate intervals set up, like this, can make the distribution of welding teeth 22 comparatively even, thereby make the solder joint distribution on the utmost point ear comparatively even, be favorable to improving welding quality.
Of course, the present invention is not limited thereto, and the arrangement shape of the plurality of welding teeth 22 may be reasonably set according to the shape of the tab, as long as the welding spots on the tab are ensured to be uniformly distributed so as to ensure the welding quality.
According to the ultrasonic horn 100 of the embodiment of the present invention, by configuring the welding face 21 of the horn body 20 to include the tooth zone 211, the tooth 22 includes the tooth holder 221 and the tooth head 222, wherein the outer surface of the tooth holder 221 is formed to be aspherical, and at least a part of the outer surface of the tooth head 222 is formed to be spherical, so that the pitch of two adjacent teeth 22 can be changed by changing the included angle between the circumferential surface of the tooth holder 221 and the tooth zone 211 under the condition that the total number of the teeth 22 in the tooth zone 211 is constant; and under the certain circumstances of interval at two adjacent welding teeth 22, can adjust the height of welding tooth 22 through the contained angle that changes between the circumferential surface of welding tooth seat 221 and the welding tooth zone 211 to make welding tooth 22 can be suitable for the welding of the utmost point ear of the different number of piles, from this, be favorable to reducing rosin joint or pseudo-soldering risk, improve welding quality.
According to some embodiments of the present invention, the outer circumferential surface of the tip seat 221 is formed as a curved surface and the cross-sectional area of the tip seat 221 increases in a direction from the tip 222 toward the tip region 211 in a first direction, which facilitates, on the one hand, the forming of the tip seat 221 and, on the other hand, a better transmission of force from the tip seat 221 to the tip 222.
In some embodiments, the welding tooth region 211 is higher than the other parts of the welding surface 21 except the welding tooth region 211 along the first direction, so that the welding tooth region 211 protrudes out of the welding surface 21, the welding tooth region 211 can be conveniently pressed on a tab material, and the effective transmission of ultrasonic waves is ensured, thereby being beneficial to improving the welding quality of a multilayer tab and preventing the occurrence of false welding or false welding. Here, the fact that the land 211 is higher than the other portion of the welding surface 21 excluding the land 211 in the first direction means that the distance between the land 211 and the central axis of the welding rod 1 in the first direction is larger than the distance between the other portion of the welding surface 21 excluding the land 211 and the central axis of the welding rod 1 in the first direction.
In a specific example, the welding tooth holder 221 is in a circular truncated cone shape, so that the welding tooth holder 221 has a simple structure and is convenient to machine and form, and in addition, the distance between two adjacent welding teeth 22 is convenient to adjust by adjusting the inclination angle of the outer peripheral surface of the welding tooth holder 221 relative to the welding tooth area 211.
According to some embodiments of the present invention, referring to fig. 3, the teeth area 211 may be formed as a plane, and the teeth area 211 may be disposed perpendicular to the first direction, so that heights of a plurality of teeth 22 disposed in the teeth group 23 of the teeth area 211 are the same, and thus different portions of the tab are pressed by the teeth 22 more uniformly, which is beneficial to forming a flat weld mark on the tab, and further, welding quality of a multi-layer tab is improved. Referring to fig. 6, the outer circumferential surface of the tooth holder 221 extends obliquely away from the central axis of the tooth holder 221 in a direction from the tooth head 222 to the tooth region 211, and the angle between the circumferential surface of the tooth holder 221 and the tooth region 211 ranges from 45 ° to 90 °. Here, the angle between the circumferential surface of the tooth holder 221 and the tooth region 211 refers to the angle between the waistline of the cross section of the tooth holder 221 in the first direction and the plane of the tooth region 211. The angle between the circumferential surface of the tooth holder 221 and the tooth region 211 may be 45 °, 60 °, 75 ° or 90 °, and the angle between the circumferential surface of the tooth holder 221 and the tooth region 211 may be selected as appropriate according to the actual situation. Thus, in the case that the total number of the welding teeth 22 in the welding tooth region 211 is constant, the distance between two adjacent welding teeth 22 can be changed by changing the included angle between the circumferential surface of the welding tooth holder 221 and the welding tooth region 211; under the condition that the distance between two adjacent welding teeth 22 is fixed, the height of the welding teeth 22 can be adjusted by changing the included angle between the circumferential surface of the welding tooth seat 221 and the welding tooth area 211, so that the welding teeth 22 can be suitable for welding lugs with different layers.
According to some embodiments of the utility model, referring to fig. 3, the welding face 21 further comprises: a non-tooth region 212. Specifically, the non-welding tooth region 212 is lower than the welding tooth region 211 in the first direction, the non-welding tooth region 212 is located on the outer peripheral side of the welding tooth region 211 and is arranged around the welding tooth region 211, the outer peripheral edge of the non-welding tooth region 212 is spaced from the outer peripheral edge of the welding surface 21, and here, the fact that the non-welding tooth region 212 is lower than the welding tooth region 211 in the first direction means that the distance between the non-welding tooth region 212 and the central axis of the welding rod 1 in the first direction is smaller than the distance between the welding tooth region 211 and the central axis of the welding rod 1 in the first direction, so that the welding surface 21 is formed into a shape with a high middle part and a low periphery, and thus, the welding tooth region 211 is more favorably pressed against the tab, and the welding quality of the multilayer tab is improved.
Further, referring to fig. 7, in the direction from the tooth zone 211 to the outer peripheral edge of the welding surface 21, the non-tooth zone 212 extends obliquely toward the center direction of the adjacent welding head body in the first direction, so that the welding surface 21 is formed into a structure with a high middle part and a low periphery, the non-tooth zone 212 can reduce the deformation of the tab due to the extrusion of the welding teeth, especially can reduce the warpage of the portion of the tab around the welding mark, thereby reducing the stress of the tab, and avoiding the occurrence of cracks in the welding process of the tab or other welding quality problems due to stress concentration.
According to some embodiments of the present invention, referring to fig. 3 and 7, the tab tooth region 211 may be formed as a plane, and the tab tooth region 211 may be disposed perpendicular to the first direction, the non-tab tooth region 212 may be a plane, that is, the non-tab tooth region 212 is formed as an obliquely disposed plane, and an included angle between the non-tab tooth region 212 and the tab tooth region 211 ranges from 1 ° to 15 °, for example, an included angle between the non-tab tooth region 212 and the tab tooth region 211 may be 1 °, 3 °, 5 °, 8 °, 10 °, 13 ° or 15 °, so that warpage of a portion of the tab around a weld mark may be further reduced, thereby reducing stress of the tab, and avoiding cracks of the tab due to excessive deformation or other welding quality problems due to stress concentration during welding.
Further, referring to fig. 3 and 7, a transition area 213 is connected between the tooth welding area 211 and the non-tooth welding area 212, the transition area 213 is formed as a curved surface, and the transition area 213 can connect the tooth welding area 211 and the non-tooth welding area 212 in a smooth transition manner, so that a corner angle at the joint of the tooth welding area 211 and the non-tooth welding area 212 can be avoided, and when the tab is pressed by the welding surface 21, the part of the tab located around the corner angle is warped, and meanwhile, the stress of the tab part contacting with the corner angle can be reduced, and the tab is prevented from being cracked or having other reliability problems due to stress concentration.
In some embodiments, the spacing between the outer contour of the tooth region 211 and the tooth 22 corresponding to the outer contour of the adjacent tooth region 211 in the tooth group 23 is in the range of 0-2mm, for example, as shown in fig. 3, all the teeth 22 in the tooth group 23 may be arranged in a rectangular array of rows and columns, and the outermost position of the tooth 22 at the outer edge in the tooth group 23 may be spaced from the outer contour of the tooth region 211 by 0mm, 0.5mm, 1mm, 1.5mm, or 2 mm.
It should be noted that, when the distance between the outermost position of the welding teeth 22 on the outer side edge and the outer contour line of the welding teeth region 211 is 0mm, the contour line of the welding teeth region 211 is the contour line obtained by connecting the positions, which are closest to the outer contour line of the welding teeth region 211, of all the welding teeth 22 on the outer side edge in the welding teeth group 23, so that the welding teeth region 211 can press the tab material through the gap between the welding teeth 22 and the welding teeth 22, thereby ensuring effective ultrasonic wave transmission to achieve welding, and because the welding teeth 22 are all located in the welding teeth region 211, it is beneficial to form a flat welding mark on the tab.
According to some embodiments of the present invention, referring to fig. 3 and 7, the outer periphery of the welding surface 21 is rounded to form a rounded corner region 214, the rounded corner region 214 is lower than the non-tooth-welded region 212 in the first direction, the rounded corner region 214 is located at the outer periphery of the non-tooth-welded region 212, and the rounded corner region 214 may be disposed around the non-tooth-welded region 212, so that the corner of the outer periphery of the welding surface 21 is eliminated, the stress concentration of the portion of the tab in contact with the rounded corner region 214 can be avoided, the tab is prevented from cracking, and meanwhile, the wear of the outer periphery of the welding surface 21 can be reduced, thereby improving the service life of the ultrasonic horn 100. Here, it should be noted that the fillet area 214 is lower than the non-tooth area 212 in the first direction means that the distance between the fillet area 214 and the central axis of the welding rod 1 in the first direction is smaller than the distance between the non-tooth area 212 and the central axis of the welding rod 1 in the first direction, that is, the fillet area 214 may smoothly connect the non-tooth area 212 and the circumferential side wall of the welding head body 20.
According to some embodiments of the present invention, a flat area 223 is formed on the surface of the tooth welding head 222 away from the tooth welding seat 221, and the flat area 223 is a plane parallel to the tooth welding area 211, so that when the ultrasonic welding head 100 of this embodiment is used to weld a tab, the welding tooth 22 and the tab can be in surface contact, compared with the point contact between the welding tooth 22 and the tab in the related art, on one hand, the problem that the welding tooth 22 has excessive pressure on the tab to cause the welding tooth 22 to crush several layers of tabs on the top, thereby causing a welding quality problem, and on the other hand, the friction between the flat area 223 and the tab can be increased, thereby preventing several layers of tabs on the top from being dislocated due to the sliding of the welding tooth 22 relative to the tab and causing the tab wrinkle, thereby affecting the transmission of ultrasonic energy between the several layers of tabs.
Further, the platform area 223 is circular, so that the welding teeth 22 can be prevented from scratching the tab during welding due to the fact that edges and corners are generated on the periphery of the platform area 223, abrasion of the welding teeth head 222 can be reduced, and the service life of the welding teeth 22 is prolonged.
Furthermore, the diameter of the platform area 223 is 0.1mm-2mm, for example, the diameter of the platform area 223 may be 0.1mm, 0.5mm, 1mm, 1.5mm or 2mm, so that the risk that the welding teeth 22 easily cut the tab when the diameter of the platform area 223 is too small, for example, less than 0.1mm, can be reduced, and the reduction of the welding effect of the tab caused by the too large contact area between the welding teeth 22 and the tab when the diameter of the platform area 223 is too large, for example, greater than 2mm, can be avoided.
According to some embodiments of the present invention, referring to fig. 6, the tip 222 is substantially spherical segment shaped, the remaining surface of the tip 222 excluding the land area 223 is formed as a spherical surface, and the tip seat 221 is truncated cone shaped. For example, as shown in fig. 6, the segment shape means that the welding tooth head 222 may be formed by cutting a part of a hemispherical body by a plane perpendicular to the first direction, the obtained cross section is formed as a platform area 223, at this time, the welding tooth head 222 is similar to the hemispherical body, the rest surface of the welding tooth head 222 except the platform area 223 is formed as a spherical surface, and the welding tooth seat 221 is located on the side of the welding tooth head 222 opposite to the platform area 223, so that the platform area 223 may be used to increase the contact area between the welding tooth 22 and the tab, thereby avoiding the tab at the top from being crushed by the welding tooth 22, and also avoiding the misalignment of several layers of tabs at the top and the tab wrinkle caused by the sliding of the welding tooth 22 relative to the tab, and at the same time, the segment-shaped welding tooth head 222 may reduce the wear, thereby improving the service life of the welding tooth 22.
Of course, the present invention is not limited thereto, and the tooth head 222 may be formed by rounding the circumference of one end of the cylindrical body, thereby simplifying the forming process of the tooth 22.
Further, referring to fig. 6, the circumferential surface of the tooth holder 221 is tangent to the circumferential surface of the tooth head 222 at the junction, so that the edge angle of the surface of the tooth 22 can be reduced, thereby reducing the loss of ultrasonic energy and facilitating the collection of ultrasonic energy. Alternatively, the circumferential surface of the tooth holder 221 and the circumferential surface of the tooth head 222 are smoothly connected, so that the edge angle of the surface of the tooth 22 can be reduced, thereby reducing the ultrasonic energy loss and facilitating the collection of the ultrasonic energy.
In some embodiments, referring to fig. 5, the tooth 22 may further include a transition portion 224, wherein the transition portion 224 is connected between the tooth base 221 and the tooth region 211, and the transition portion 224 may be curved, such that the transition portion 224 may avoid an edge angle between the tooth base 221 and the tooth region 211, thereby avoiding a portion of the tab at the connection of the tooth base 221 and the tooth region 211 from generating stress concentration and causing cracks or other weld quality problems. Alternatively, the transition 224 may be formed by rounding the tooth base 221 and the tooth region 211.
Here, the distance between the outer contour line of the tooth region 211 and the tooth 22 adjacent to the outer contour line of the tooth region 211 in the tooth group 23 may be a distance between a position on the transition portion 224 of the tooth 22 closest to the outer contour line of the tooth region 211 and the outer contour line of the tooth region 211.
Further, the radius R of the transition portion 224 is 0.1mm-2mm, that is, the transition portion 224 may be formed in a circular arc shape, the radius R of the transition portion 224 may be 0.1mm, 0.5mm, 0.8mm, 1mm, 1.5mm or 2mm, and the radius of the transition portion 224 may be reasonably set according to actual conditions, so that it may be avoided that, when the radius of the transition portion 224 is too small, for example, less than 0.1mm, the tab is easily cracked due to the corner contact between the welding tooth seat 221 and the welding tooth zone 211, and when the radius of the transition portion 224 is too large, for example, greater than 2mm, the width of the welding tooth zone 211 between two adjacent welding teeth 22 is too narrow, so that after welding is completed, the region of the tab between two adjacent welding impressions is uneven due to the transition portion 224, so that the welding effect of the tab is affected.
In some embodiments, the transition portions 224 of two adjacent welding teeth 22 are spaced apart, so that the area of the tab between two adjacent welding marks is smoother, the tab area between two adjacent welding marks is prevented from being warped during welding, and the tab welding quality is further improved.
An ultrasonic welding apparatus according to an embodiment of the second aspect of the present invention is described below.
An ultrasonic welding apparatus according to an embodiment of a second aspect of the present invention includes: an ultrasonic horn 100 according to the above-described embodiment of the present invention.
According to the ultrasonic welding equipment of the embodiment of the utility model, by arranging the ultrasonic welding head 100 of the embodiment, when a plurality of layers of tabs are welded, the warping of the portions, positioned around the welding mark, of the tabs can be relieved, so that the stress of the tabs is reduced, and the problems of cracks generated in the tabs in the welding process or other welding quality problems caused by stress concentration are avoided.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (14)
1. An ultrasonic horn, comprising:
welding a rod;
the welding head portion, the bonding tool portion is located the one end of welding rod along length direction, the bonding tool portion includes bonding tool body and welding tooth group, welding tooth group includes the welding tooth that a plurality of intervals were arranged, the bonding tool body forms into the face of weld at least one side surface of first direction, the face of weld is including welding the tooth district, welding tooth group locates the welding tooth district, the welding tooth includes:
the welding tooth seat is connected with the welding tooth area, and the peripheral surface of the welding tooth seat is formed into an aspheric surface;
the welding tooth head is connected to one side, far away from the welding tooth area, of the welding tooth seat, the projection of the welding tooth head on a reference surface is located in the projection of the welding tooth seat on the reference surface, the reference surface is perpendicular to the first direction, at least part of the outer surface of the welding tooth head is formed into a spherical surface, and the outer peripheral surface of the welding tooth head is connected with the outer peripheral surface of the welding tooth seat.
2. The ultrasonic horn of claim 1 wherein the peripheral surface of the horn base is formed as a curved surface and the cross-sectional area of the horn base increases in a direction from the horn head to the horn region.
3. The ultrasonic horn of claim 2 wherein the horn base is frustoconical.
4. The ultrasonic horn of claim 2 wherein the tip region is formed as a flat surface, the peripheral surface of the tip seat extending obliquely away from the central axis of the tip seat in a direction from the tip to the tip region, the angle between the peripheral surface of the tip seat and the tip region ranging from 45 ° to 90 °.
5. The ultrasonic horn of claim 1, wherein the weld face comprises: a non-tooth region that is lower than the tooth region in a first direction, the non-tooth region being located on an outer peripheral side of the tooth region and disposed around the tooth region, an outer peripheral edge of the non-tooth region being spaced apart from an outer peripheral edge of the bonding surface.
6. The ultrasonic horn of claim 5 wherein the land is formed as a plane and perpendicular to the first direction, and the non-land is formed as an inclined surface extending obliquely in a direction from an outer peripheral edge of the land to an outer peripheral edge of the bonding surface.
7. The ultrasonic horn of claim 6 wherein the non-tooth zone is planar and the angle between the non-tooth zone and the tooth zone is in the range of 1 ° to 15 °.
8. The ultrasonic horn of claim 5 wherein a transition region is connected between the teeth region and the non-teeth region, the transition region being formed as a curved surface and smoothly transitioning between the teeth region and the non-teeth region; and/or the periphery of the welding surface is formed into a fillet area along a fillet, and the fillet area is positioned on the periphery side of the non-welding tooth area and surrounds the non-welding tooth area.
9. An ultrasonic horn according to claim 1 wherein the face of the horn remote from the horn is formed with a land, the land being a plane parallel to the horn.
10. The ultrasonic horn of claim 9 wherein the land is circular and the land has a diameter of 0.1mm to 2 mm.
11. An ultrasonic horn according to claim 9 wherein the tip is substantially spherical segment shaped and the remaining surface of the tip excluding the land area is formed as a spherical surface.
12. An ultrasonic horn according to claim 1 wherein the peripheral surface of the horn is smoothly connected to the peripheral surface of the horn; and/or, the welding tooth further comprises a transition part, the transition part is connected between the welding tooth seat and the welding tooth area, the transition part is arc-shaped, and the radius R of the transition part is 0.1mm-2 mm.
13. The ultrasonic horn of claim 1 wherein the spacing between the outer contour of the tooth region and the tooth corresponding to the outer contour of the set of teeth adjacent the tooth region is in the range of 0-2 mm.
14. An ultrasonic welding apparatus, comprising: the ultrasonic horn of any one of claims 1-13.
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| WO2024022537A1 (en) * | 2023-06-30 | 2024-02-01 | 湖北亿纬动力有限公司 | Ultrasonic welding head and ultrasonic welding apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024022537A1 (en) * | 2023-06-30 | 2024-02-01 | 湖北亿纬动力有限公司 | Ultrasonic welding head and ultrasonic welding apparatus |
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