CN213033876U - Ultrasonic welding head device and ultrasonic welding machine with same - Google Patents

Abstract

The utility model belongs to the technical field of lithium cell ultrasonic welding, especially, relate to an ultrasonic bonding tool device and have its ultrasonic bonding machine. Wherein, ultrasonic horn device includes: the welding head is provided with a plurality of welding spots, and the planes of the plurality of welding spots are vertical to the extension axis of the welding head; a first bearing and a second bearing; the welding head comprises a first fixed seat and a second fixed seat, wherein a first end of the welding head is arranged on the first fixed seat through a first bearing, and a second end of the welding head is arranged on the second fixed seat through a second bearing; the first baffle is connected to the first end of the welding head and rotates synchronously with the welding head; wherein, it has first incision to open on the first fixing base, and first separation blade extends into first incision in, and first separation blade can be in first incision around the extension axis reciprocating swing of bonding tool. By the technical scheme, the problem that the product quality is affected due to the fact that the false welding phenomenon easily occurs at the abrasion position of the welding head in a mode of fixing the welding head after the parallelism of the welding head and the welding seat is manually adjusted in the prior art is solved.

Description

Ultrasonic welding head device and ultrasonic welding machine with same

Technical Field

The utility model belongs to the technical field of lithium cell ultrasonic welding, especially, relate to an ultrasonic bonding tool device and have its ultrasonic bonding machine.

Background

In the ultrasonic welding equipment for the lug in the lithium battery production process, because the welding head mechanism can only be pressed on the welding seat by the dead weight at present, the parallelism between the welding head and the welding seat is manually and preliminarily adjusted according to the welding mark which is highlighted by the base material pressed on the welding seat by the welding head, and then the welding head is locked and fixed. However, since the thickness of the base material copper foil is only 6-8um, the parallelism between the welding head and the welding seat can not be guaranteed to reach the micron level by a manual adjusting method, and the welding head is kept still after being locked, so that the welding head at the highest fixed position is preferentially worn, and the false welding phenomenon is easy to occur at the worn position of the welding head along with the increase of the welding times, thereby seriously affecting the product quality and the service life of the welding head.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an ultrasonic bonding tool device and have its ultrasonic welding machine aims at solving among the prior art artificially and adjusts bonding tool and weld the fixed mode of bonding tool after the seat depth of parallelism and lead to the problem that the rosin joint phenomenon appears easily and influence product quality in bonding tool wearing and tearing position.

In order to achieve the above object, the utility model adopts the following technical scheme: an ultrasonic horn device comprising: the welding head is provided with a plurality of welding spots, and the planes of the plurality of welding spots are vertical to the extension axis of the welding head; a first bearing and a second bearing; the welding head comprises a first fixed seat and a second fixed seat, wherein a first end of the welding head is arranged on the first fixed seat through a first bearing, and a second end of the welding head is arranged on the second fixed seat through a second bearing; the ultrasonic horn device further comprises: the first baffle is connected to the first end of the welding head and rotates synchronously with the welding head; wherein, it has first incision to open on the first fixing base, and first separation blade extends into first incision in, and first separation blade can be in first incision around the extension axis reciprocating swing of bonding tool.

Preferably, the ultrasonic welding head device further comprises a second baffle, the second baffle is connected to the second end of the welding head and rotates synchronously with the welding head, the second baffle is the same as the first baffle in size, a second notch is formed in the second fixing seat and extends into the second notch, the second baffle can swing in the second notch in a reciprocating mode around the extension axis of the welding head, and the second notch is the same as the first notch in size.

Preferably, the second blocking piece and the first blocking piece are arranged opposite to each other.

According to the utility model discloses a further aspect provides an ultrasonic welding machine. This ultrasonic welding machine includes: an ultrasonic horn device as previously described; the mounting frame is provided with an upper mounting seat and a lower mounting seat which are opposite; the first fixing seat and the second fixing seat are connected with the downward pressing driving mechanism to enable the extension axis of the welding head to be in the horizontal plane, and the downward pressing driving mechanism drives the ultrasonic welding head device to move up and down; the welding seat is installed on the lower installation seat and provided with a welding bearing platform, and the bearing plane of the welding bearing platform is opposite to the welding points.

Preferably, the ultrasonic welding machine further comprises a tab lifting mechanism, the tab lifting mechanism comprises a lifting driving device and two transition rollers, the lifting driving device is mounted on the lower mounting seat, the two transition rollers are connected to the driving end of the lifting driving device, and the welding plummer is located between the two transition rollers.

Preferably, lifting drive arrangement is including installation riser, first cylinder and first adapter plate, and installation riser fixed connection is in mount pad down, and first cylinder is installed in the installation riser, and first adapter plate fixed connection is in the piston rod of first cylinder, and two transition rollers are connected in first adapter plate.

Preferably, the pressing driving mechanism comprises a second cylinder and a second adapter plate, the second cylinder is installed on the upper installation seat, the second adapter plate is connected to a piston rod of the second cylinder, and the first fixing seat and the second fixing seat are both connected to the second adapter plate.

Preferably, push down actuating mechanism still includes guide post and uide bushing, and the uide bushing is installed in last mount pad, and the uide bushing is worn to locate by the first end of guide post, and the second end of guide post is connected in the second keysets.

Preferably, the number of the guide posts is two, and the two guide posts are respectively arranged on two sides of the second cylinder.

Preferably, the pressing driving mechanism further comprises two buffer springs, the two buffer springs correspond to the two guide posts one by one, and the buffer springs are sleeved on the guide posts and are compressed between the upper mounting seat and the second adapter plate in a pre-tightening mode.

The utility model has the advantages that:

use this ultrasonic wave bonding tool device to carry out welding operation, with the bonding tool fixed and carry out welding operation after the depth of parallelism between manual regulation bonding tool and the bonding pad for prior art, can carry out automatic depth of parallelism all the time to the solder joint of bonding tool and adjust, and the bonding tool is through first bearing all the time under the welding force effect, the second bearing is in continuous dynamic adjustment, thereby avoid effectively because of the rosin joint phenomenon that the solder joint of bonding tool leads to after being worn and torn, improve the production quality of welding product, and the solder joint life of bonding tool has been improved, thereby the equipment use cost in the welding process has been reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of an ultrasonic horn device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an ultrasonic welding machine according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

10. a welding head; 11. welding spots; 21. a first bearing; 22. a second bearing; 31. a first fixed seat; 32. a second fixed seat; 41. a first baffle plate; 42. a second baffle plate; 311. a first cut; 321. a second cut; 110. a mounting frame; 111. an upper mounting seat; 112. a lower mounting seat; 120. a push-down drive mechanism; 130. welding a base; 131. welding a bearing table; 140. a lug lifting mechanism; 141. a lift drive; 142. a transition roll; 1411. installing a vertical plate; 1412. a first cylinder; 1413. a first transfer plate; 121. a second cylinder; 122. a second adapter plate; 123. a guide post; 124. a guide sleeve; 125. a buffer spring; 51. a shaft sleeve; 52. a fixing ring; 53. a horn; 54. a transducer.

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 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 exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

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 limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1, the embodiment of the present invention provides an ultrasonic welding head device, which includes a welding head 10, a first bearing 21, a second bearing 22, a first fixing seat 31, a second fixing seat 32 and a first blocking sheet 41, in the ultrasonic welding head device, a plurality of welding spots 11 are arranged on the welding head 10, a plane where the plurality of welding spots 11 are located is perpendicular to an extension axis of the welding head 10, a first end of the welding head 10 is installed on the first fixing seat 31 through the first bearing 21, a second end of the welding head 10 is installed on the second fixing seat 32 through the second bearing 22, the first blocking sheet 41 is connected to a first end of the welding head 10 and rotates synchronously with the welding head 10, and a first cut 311 is formed on the first fixing seat 31, the first blocking sheet 41 extends into the first cut 311, and the first blocking sheet 41 can swing back and forth around the extension axis of the welding head 10 in the first cut 311.

Wherein, the first end and the second end of the welding head 10 are fixedly sleeved with the shaft sleeves 51, then, the shaft sleeve 51 of the first end of the welding head 10 is connected to the inner ring of the first bearing 21, the shaft sleeve 51 of the second end of the welding head 10 is connected to the inner ring of the second bearing 22, then, a fixing ring 52 is placed at the first end of the welding head 10 for blocking the first bearing 21 from sliding out of the shaft sleeve 51, the first baffle plate 41 is placed on the fixing ring 52 of the first end, and the first baffle plate 41 and the fixing ring 52 are fixedly connected to the end portion of the first end of the welding head 10 through a locking screw, correspondingly, a fixing ring 52 is also placed at the second end of the welding head 10 for blocking the second bearing 22 from sliding out of the shaft sleeve 51, and the fixing ring 52 is fixedly connected to the end portion of the second end of. A transducer 54 is connected to the second end of the horn 10, and a resonator plate (not shown) and a horn 53 are mounted to the first end of the horn 10.

The ultrasonic welding head device provided by the utility model is applied to weld the welding materials, even if micro-deviation exists between a plurality of welding points 11 (generally, the vertexes of the welding points 11 of a brand-new welding head 10 are positioned in the same horizontal plane, in the using process, the welding points 11 are worn, because the wear degree of each welding point 11 is different, after a period of use, the vertexes of the welding points 11 are no longer positioned in the same horizontal plane due to the micro-deviation among the welding points 11, but the vertexes of the welding points 11 are still positioned in the same inclined plane, if the vertexes of one welding point 11 and the vertexes of other welding points 11 are no longer positioned in the same plane, the welding point of the welding head 10 should be milled again), the welding point 11 with the longest length firstly contacts with the welding materials, and along with the downward pressure action of the welding head 10, at this time, the welding head 10 is rotationally adjusted through the first bearing 21 and the second bearing 22, and the first baffle sheet 41 and the first notch 311 are matched to prevent the welding head 10 from being rotationally adjusted to a large extent, so that the automatic adjustment process of parallelism is realized by the parallelism of the plurality of welding points 11 and the welding seat 130 bearing the welding materials, and the parallelism is always kept under the action of welding pressure until the welding is completed. Therefore, use this ultrasonic wave bonding tool device to carry out welding operation, for fixing the bonding tool and carrying out welding operation after the manual regulation bonding tool of prior art and the parallel degree between bonding pad, can carry out automatic parallel degree regulation all the time to bonding pad 11 of bonding tool 10 to bonding tool 10 is constantly dynamic adjustment through first bearing 21, second bearing 22 under the welding power effect all the time, thereby avoid effectively because of the rosin joint phenomenon that bonding pad 11 of bonding tool 10 leads to after being worn and torn, improve the production quality of welding product.

In the ultrasonic welding head device of the present embodiment, it further includes a second blocking plate 42, the second blocking plate 42 is connected to the second end of the welding head 10 and rotates synchronously with the welding head 10, after the sleeve 51 of the second end of the welding head 10 is connected to the inner ring of the second bearing 22 and the fixing ring 52 is placed, the second blocking plate 42 is placed, and then the second blocking plate 42 and the fixing ring 52 are fixed to the end of the second end of the welding head 10 simultaneously by the locking screw. The second blocking piece 42 has the same size as the first blocking piece 41, the second notch 321 has the same size as the first notch 311, the second fixing seat 32 is provided with the second notch 321, the second blocking piece 42 extends into the second notch 321, and the second blocking piece 42 can swing back and forth around the extension axis of the welding head 10 in the second notch 321. During the rotation adjustment of the welding head 10, the first blocking piece 41, the first notch 311, the second blocking piece 42 and the second notch 321 cooperate to limit the rotation of the welding head 10 at the same time, so as to avoid the large rotation adjustment of the welding head 10.

To facilitate assembly of the ultrasonic horn device, the second flap 42 and the first flap 41 are arranged opposite one another.

According to the utility model discloses a further aspect provides an ultrasonic welding machine. As shown in fig. 2, the ultrasonic welding machine includes a mounting frame 110, a pressing driving mechanism 120, a welding seat 130 and the ultrasonic welding head device, where the mounting frame 110 is provided with an upper mounting seat 111 and a lower mounting seat 112 which are opposite to each other, the pressing driving mechanism 120 is installed on the upper mounting seat 111, the first fixing seat 31 and the second fixing seat 32 are both connected to the pressing driving mechanism 120 so that the extension axis of the welding head 10 is in a horizontal plane, the pressing driving mechanism 120 drives the ultrasonic welding head device to move up and down, the welding seat 130 is installed on the lower mounting seat 112, the welding seat 130 is provided with a welding plummer 131, and a bearing plane of the welding plummer 131 is opposite to the plurality of welding spots 11.

When welding operation is performed on welding materials, the welding materials are placed on a bearing plane of the welding bearing table 131, then the ultrasonic welding head device is driven to press down by starting the press-down driving mechanism 120, the welding spots 11 are automatically rotated and adjusted through the first bearing 21 and the second bearing 22 in the process of contacting the welding materials, so that parallelism adjustment of the bearing planes of the welding spots 11 and the welding bearing table 131 is achieved, and then the welding materials are always kept in a constant parallelism state under the action of welding pressing force until the welding operation is completed.

The utility model discloses an among the ultrasonic welding machine, it is still including lifting utmost point ear mechanism 140, lifts utmost point ear mechanism 140 and includes lifting drive arrangement 141 and two transition rollers 142, and lifting drive arrangement 141 installs in mount pad 112 down, and two transition rollers 142 are connected in lifting drive arrangement 141's drive end, and weld plummer 131 and lie in between two transition rollers 142. During the welding process, after the parallelism adjustment between the welding head 10 and the welding bearing platform 131 is completed and the welding head 10 presses the welding material, the welding machine starts to emit ultrasonic waves, the transducer 54 generates high-frequency oscillation, mechanical energy is transferred to the welding material through the amplitude transformer 53 in the ultrasonic welding head device, the shaft sleeves 51 tightly matched with the two ends of the welding head 10, the first bearing 21, the second bearing 22, the resonance piece (not shown), the fixing ring 52, the first blocking piece 41 and the second blocking piece 42, the welding material starts to be engaged together, the welding material is completely engaged after a preset time, then the ultrasonic welding head device is driven to move upwards by the downward driving mechanism 120, and in order to prevent the welding material from being bonded with the bearing plane of the welding bearing platform 131, the welding material is lifted from the bearing plane by driving the two transition rollers 142 by the upward driving device 141, and the upward driving device 141 returns to the initial position after the welding material is conveyed away, the entire welding operation is completed and the welding operation cycle is then ready for the next welding material.

Specifically, the lifting driving device 141 includes a mounting riser 1411, a first cylinder 1412 and a first transfer plate 1413, the mounting riser 1411 is fixedly connected to the lower mounting base 112, the first cylinder 1412 is mounted to the mounting riser 1411, the first transfer plate 1413 is fixedly connected to a piston rod of the first cylinder 1412, and the two transition rollers 142 are connected to the first transfer plate 1413.

The pressing driving mechanism 120 of the ultrasonic welding machine comprises a second cylinder 121 and a second adapter plate 122, the second cylinder 121 is installed on the upper installation seat 111, the second adapter plate 122 is connected to a piston rod of the second cylinder 121, and the first fixing seat 31 and the second fixing seat 32 are both connected to the second adapter plate 122. Specifically, the downward-pressing driving mechanism 120 further includes a guide post 123 and a guide sleeve 124, the guide sleeve 124 is mounted on the upper mounting base 111, a first end of the guide post 123 penetrates through the guide sleeve 124, and a second end of the guide post 123 is connected to the second adapter plate 122. Two guide posts 123 and correspondingly two guide sleeves 124 are provided, and the two guide posts 123 are respectively provided on both sides of the second cylinder 121.

In order to relieve the impact force of the welding spot 11 of the welding head 10 on the bearing plane of the welding bearing table 131 during the process that the second air cylinder 121 drives the ultrasonic welding head device to descend, the pressing-down driving mechanism 120 of the ultrasonic welding machine further includes two buffer springs 125, the two buffer springs 125 correspond to the two guide posts 123 one by one, and the buffer springs 125 are sleeved on the guide posts 123 and are pre-tightened and compressed between the upper mounting seat 111 and the second adapter plate 122.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. An ultrasonic horn device comprising:

the welding head is provided with a plurality of welding spots, and the planes of the plurality of welding spots are perpendicular to the extension axis of the welding head;

a first bearing and a second bearing;

the first end of the welding head is mounted on the first fixed seat through the first bearing, and the second end of the welding head is mounted on the second fixed seat through the second bearing;

characterized in that the ultrasonic horn device further comprises:

the first baffle is connected to the first end of the welding head and rotates synchronously with the welding head;

the first fixing seat is provided with a first notch, the first blocking piece extends into the first notch, and the first blocking piece can swing back and forth around the extension axis of the welding head in the first notch.

2. The ultrasonic horn device of claim 1 further comprising a second stop tab connected to the second end of the horn and rotating synchronously with the horn, the second stop tab being of the same size as the first stop tab, a second notch being formed in the second holder, the second stop tab extending into the second notch, the second stop tab being capable of oscillating back and forth within the second notch about the axis of elongation of the horn, and the second notch being of the same size as the first notch.

3. The ultrasonic horn device of claim 2 wherein the second stop is disposed opposite the first stop.

4. An ultrasonic welding machine, comprising:

an ultrasonic horn device according to any one of claims 1 to 3;

the mounting frame is provided with an upper mounting seat and a lower mounting seat which are opposite;

the first fixing seat and the second fixing seat are connected to the downward pressing driving mechanism, so that the extension axis of the welding head is positioned in a horizontal plane, and the downward pressing driving mechanism drives the ultrasonic welding head device to move up and down;

the welding seat is installed on the lower installation seat, a welding bearing table is arranged on the welding seat, and the bearing plane of the welding bearing table is opposite to the welding points.

5. The ultrasonic welding machine of claim 4, further comprising a tab lifting mechanism, wherein the tab lifting mechanism comprises a lifting drive device and two transition rollers, the lifting drive device is mounted on the lower mounting base, the two transition rollers are connected to a drive end of the lifting drive device, and the welding plummer is located between the two transition rollers.

6. The ultrasonic welding machine of claim 5, wherein the lifting drive comprises a mounting riser fixedly connected to the lower mount, a first cylinder mounted to the mounting riser, and a first adapter plate fixedly connected to a piston rod of the first cylinder, the two transition rollers being connected to the first adapter plate.

7. The ultrasonic welding machine of claim 4, wherein the push-down driving mechanism comprises a second cylinder and a second adapter plate, the second cylinder is mounted on the upper mounting base, the second adapter plate is connected to a piston rod of the second cylinder, and the first fixing base and the second fixing base are both connected to the second adapter plate.

8. The ultrasonic welding machine of claim 7, wherein the push-down driving mechanism further comprises a guide post and a guide sleeve, the guide sleeve is mounted on the upper mounting base, a first end of the guide post penetrates through the guide sleeve, and a second end of the guide post is connected to the second adapter plate.

9. The ultrasonic welding machine of claim 8, wherein the number of the guide posts is two, and the two guide posts are respectively disposed at both sides of the second cylinder.

10. An ultrasonic welding machine according to claim 9 wherein the push down drive mechanism further comprises two buffer springs, the two buffer springs correspond to the two guide posts one to one, and the buffer springs are sleeved on the guide posts and are pre-tightened to be compressed between the upper mounting base and the second adapter plate.

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