CN215999094U - Ultrasonic welding device - Google Patents

Abstract

The utility model provides an ultrasonic welding device, include: the push rod is used for being connected with the ultrasonic generator; the welding head is arranged at one end of the push rod, the welding end of the welding head is provided with more than two welding heads for welding, and a first groove is formed between the welding heads for welding; and the welding seat is arranged opposite to the welding head, and the welding seat welding mark is arranged on the welding seat at the position corresponding to the welding mark of the welding head. The utility model has the advantages of as follows: the welding device with the two welding heads for welding is designed, so that the welding efficiency can be effectively improved, the tool can be avoided through the design of the first groove, and the technical effect of crossing the tool to complete welding of the ultrasonic welding is achieved.

Description

Ultrasonic welding device

Technical Field

The utility model relates to a bonding tool design field especially relates to a novel ultrasonic welding device.

Background

In the ultrasonic welding process, an ultrasonic generator converts electric energy into mechanical fluctuation with higher frequency (20KHZ, 15KHZ and the like), and obtains larger mechanical energy at a welding head through a plurality of amplifiers; the welding head is pressed down, the welded workpieces generate heat by mutual friction under the clamping force of the welding head and the welding seat, and the heat fusion process on the atomic layer surface between the workpieces can be realized when the heat reaches 1/3-1/2 of the melting point of the workpieces. The process is an energy conversion process from electrical energy-mechanical energy-thermal energy. In the structural design of the existing welding head, the area of the ultrasonic welding mark is large, and the distance between the centers of the two welding marks is large, so that only a plurality of welding points can be welded in sequence, and the low production efficiency is directly caused.

Disclosure of Invention

The to-be-solved technical problem of the utility model lies in providing a novel ultrasonic welding device, solves the problem that current ultrasonic welding device is inefficiency.

The utility model discloses a realize like this: an ultrasonic welding device comprising:

the push rod is used for being connected with the ultrasonic generator;

the welding head is arranged at one end of the push rod, the welding end of the welding head is provided with more than two welding heads for welding, and a first groove is formed between the welding heads for welding;

and the welding seat is arranged opposite to the welding head, and the welding seat welding mark is arranged on the welding seat at the position corresponding to the welding mark of the welding head.

Optionally, the method further comprises:

the connector is used for being connected with the other end of the push rod;

the connecting seat is used for being connected with the connecting head, and the connecting seat comprises a stress surface used for bearing the thrust of a hydraulic cylinder or an air cylinder.

Optionally, the connector includes a connecting portion, the connecting seat has a connecting groove adapted to the connecting portion, and the connecting groove is used for limiting the connecting portion.

Optionally, the connecting portion is a wedge-shaped connecting portion, the connecting groove is used for being matched with the wedge-shaped connecting portion, the top surface of the wedge-shaped connecting portion is a wedge-shaped wide surface, the top surface of the wedge-shaped connecting portion is attached to the bottom surface of the connecting groove, and the side surface of the wedge-shaped connecting portion is attached to the side wall of the connecting groove.

Optionally, the connecting seat includes a first locking piece and a second locking piece, and the first locking piece and the second locking piece are spliced to form a locking portion having the connecting groove.

Optionally, connecting portion are wedge connecting portion, the bottom surface of first locking piece is laminated with wedge connecting portion's top surface mutually, a lateral wall of first locking piece is laminated with wedge connecting portion's side mutually, first locking piece is connected with the second locking piece, the part that the second locking piece surpasss first locking piece bottom surface extends to the inboard and supports the another side that leans on wedge connecting portion, first locking piece, second locking piece form spacing wedge connecting portion's fourth of the twelve earthly branches type portion after the fastening.

Optionally, the wedge-shaped connecting part comprises a first locking piece and a second locking piece, the first locking piece is connected with the second locking piece, the second locking piece comprises a protruding part which exceeds the bottom surface of the first locking piece, and when the second locking piece is fastened with the first locking piece, the protruding part can limit the wedge-shaped connecting part to be separated from the front surface.

Optionally, the width of the welding head is greater than that of the push rod along the width direction, and the width direction is perpendicular to the connecting line direction of the two welding heads.

Optionally, the cross section of the push rod is rectangular, and a ratio X of the length to the width of the cross section satisfies a condition: x is more than or equal to 1.2 and less than or equal to 3.0, or,

the cross section of the push rod is elliptical, and the ratio Y of the long axis to the short axis of the cross section meets the condition: y is more than or equal to 1.2 and less than or equal to 3.0.

Optionally, the number of the welding seats is the same as that of the welding heads, the welding seats are slightly larger than the welding heads, a first groove is formed between every two adjacent welding heads, and a second groove corresponding to the first groove is formed between every two adjacent welding seats.

Optionally, the electrode assembly further comprises a clamp for clamping a tab on the electrode assembly, the clamp comprises a pressure plate and a bottom plate, and the tab is clamped between the pressure plate and the bottom plate;

the pressure plate is provided with a first hollow part, the welding head welding mark is configured to penetrate through the first hollow part to abut against the lug, and the first groove is used for avoiding the pressure plate;

the bottom plate is provided with a second hollowed-out portion, the welding seat welding mark is configured to penetrate through the second hollowed-out portion to abut against the lug, and the second groove is used for avoiding the bottom plate.

Optionally, the welding device further comprises a support rod for supporting the welding seat and connected to the bottom of the welding seat.

The utility model has the advantages of as follows: the welding device with the two welding heads for welding is designed, so that the welding efficiency can be effectively improved, the tool can be avoided through the design of the first groove, and the technical effect of crossing the tool to complete welding of the ultrasonic welding is achieved.

Drawings

Fig. 1 is a diagram of an ultrasonic welding apparatus according to an embodiment of the present invention;

fig. 2 is a partially enlarged view of an ultrasonic welding apparatus according to an embodiment of the present invention;

fig. 3 is a schematic view of a connecting head and a connecting seat according to an embodiment of the present invention;

fig. 4 is a schematic view of a third locking block according to an embodiment of the present invention.

Description of reference numerals:

1. the push rod is arranged on the upper portion of the push rod,

2. a welding head;

20. welding and printing by a welding head;

21. a first groove;

3. welding a base;

30. welding and printing a welding seat;

31. a second groove;

4. a connector;

40. a connecting portion;

5. a connecting seat;

50. connecting grooves;

51. a first lock block;

52. a second lock block;

53. a third locking block;

531. a protrusion;

6. support rod

7. And a support table.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

Please refer to the overall view of fig. 1 and the enlarged partial view of fig. 2, which are the ultrasonic welding apparatus of the present invention, comprising: and the push rod 1 is used for being connected with an ultrasonic generator. The welding head 2 is arranged at one end of the push rod 1, the welding end of the welding head 2 is provided with more than two welding head welding imprints 20, and a first groove 21 is formed between the welding head welding imprints 20 of the welding head 2. And the welding seat 3 is arranged opposite to the welding head 2, and the welding seat welding mark 30 is arranged on the welding seat 3 corresponding to the welding head welding mark 20.

One end of the push rod 1, which is provided with the welding head 2, is used for contacting with a welding point position to be welded, and the other end of the push rod can be used for bearing force to enable the welding head 2 to approach the welding point position. In some embodiments, the point to be welded may be a tab portion of the electrode assembly. Due to the fact that more than two welding marks 20 are designed, the welding head 2 can weld two welding point positions at the same time. And be provided with first recess 21 in bonding tool seal 20, increased bonding tool seal 20 position keep away the empty height for bonding tool seal 20 can stretch into some hole, some recessed position and carry out the welding operation of welding point position, has promoted the adaptability to different operating modes, has strengthened the practicality of this application scheme.

In other embodiments shown in fig. 1, a connector 4 is further included for connecting to the other end of the push rod 1. Referring to fig. 3, the connecting device further includes a connecting base 5 for connecting with the connecting head 4, and the connecting base 5 includes a bearing surface for receiving the pushing force of the hydraulic cylinder or the air cylinder. Connector 4 can be split type design with push rod 1, also can be with push rod 1 integrated into one piece's design, and connector 4 sets up at the other end of push rod 1, is used for expanding the stress surface usually to can better accept pressure, make bonding tool 2 compress tightly on the welding point position. The connecting base 5 is usually driven by external force and can move along the length direction of the push rod 1. The connecting seat 5 is used for connecting with the connecting head 4, wherein the connection can be bolt locking, buckling, clamping groove clamping or tenon-and-mortise structure with mutually adaptive shape and the like. Through the connection of connecting seat 5 and connector 4, can be better with the kinetic energy transfer of connecting seat 5 to on connector 4. Thereby improving the efficiency of the force transmission to the joint head 4.

In some embodiments, the connector 4 and the connector seat 5 are connected by a snap fit. Specifically, the connecting head 4 includes a connecting portion 40, the connecting socket 5 has a connecting groove 50 adapted to the connecting portion 40, and the connecting groove 50 is used for limiting the connecting portion 40. As shown in fig. 3, the notch of the coupling groove 50 faces downward, and the coupling portion 40 can be freely inserted into the coupling groove 50 from the opening on one side. The coupling groove 50 can restrict the movement of the coupling portion 40 in a direction of pressing the welding point, for example, a vertical direction in the present embodiment. At this time, the locking structure between the connecting seat 5 and the connecting head 4 can be omitted, and the technical effect of transmitting power to the connecting head 4 can be achieved.

In the embodiment shown in fig. 3, the connecting portion 40 is a wedge-shaped connecting portion 40, the connecting groove 50 is adapted to fit with the wedge-shaped connecting portion 40, the top surface of the wedge-shaped connecting portion 40 is a wedge-shaped wide surface, the top surface of the wedge-shaped connecting portion 40 is attached to the bottom surface of the connecting groove 50, and the side surface of the wedge-shaped connecting portion 40 is attached to the side wall of the connecting groove 50. Choose for use the structure of the spread groove 50 of wedge coupling portion 40 and fourth of the twelve earthly branches type can transmit power better, and the top surface through wedge coupling portion 40 and the bottom surface of spread groove 50 laminate each other to and the side of wedge coupling portion 40 and the lateral wall of spread groove 50 laminate each other, can laminate and transmit power better, and the preparation of wedge coupling portion 40 and spread groove 50 is also easy simultaneously, saves the cost of manufacture.

In an alternative embodiment, for better installation, the connecting base 5 includes a first locking piece 51 and a second locking piece 52, and the first locking piece 51 and the second locking piece 52 are combined to form a locking portion having a connecting groove 50. In this case, the first locking piece 51 is combined with the second locking piece 52 to form the connecting groove 50, for example, the first locking piece 51 may include a groove bottom and a groove edge on one side of the connecting groove 50, and the second locking piece 52 may include a groove edge on the other side, which are combined to form a locking portion of the first locking piece 51 and the second locking piece 52, so that they can be locked when being installed. After the first locking block 51 and the second locking block 52 are wrapped on the connecting part 40, the first locking block 51 and the second locking block 52 are locked, and the connecting seat 5 and the connecting head 4 can be connected through the scheme, so that the connection is more stable.

In other embodiments, the connecting portion 40 is a wedge-shaped connecting portion 40, a bottom surface of the first locking piece 51 is attached to a top surface of the wedge-shaped connecting portion 40, a side wall of the first locking piece 51 is attached to a side surface of the wedge-shaped connecting portion 40, the first locking piece 51 is connected to the second locking piece 52, a portion of the second locking piece 52, which exceeds the bottom surface of the first locking piece 51, extends inward and abuts against the other side surface of the wedge-shaped connecting portion 40, and the first locking piece 51 and the second locking piece 52 are fastened to form a mortise-type portion for limiting the wedge-shaped connecting portion 40. As shown in fig. 3, a portion of the second locking piece 52, which exceeds the length of the bottom surface of the first locking piece 51 in the vertical direction, may be bent inward, the inward bent portion of the second locking piece 52 may not be completely attached to the other side surface of the wedge-shaped connecting portion 40, and only the front end of the inward bent portion abuts against the wedge-shaped connecting portion 40. The splicing structure through setting up first locking piece 51 and second locking piece 52 is for laminating with wedge-shaped connecting portion 40, and the structure of the mutual closure of first locking piece 51 and second locking piece 52 can be when guaranteeing the stability of connector 4, also be convenient for install more.

In other embodiments, a third locking piece 53 is further connected to the front surface of the first locking piece 51, as shown in fig. 4, which shows a schematic view of the third locking piece 53, and the third locking piece 53 is installed on the front surface of the first locking piece 51 according to the illustrated direction to limit the connection portion 40 from coming out of the front of the connection slot 50. Further, the third locking piece 53 may further be provided with a protruding portion 531 protruding beyond the bottom surface of the first locking piece 51, and when the third locking piece 53 is fastened to the first locking piece 51, the protruding portion 531 can better conform to the shape of the connecting portion 40, and the wedge-shaped connecting portion 40 is better limited from coming off from the front surface. The provision of the connecting slot 50 and the connecting portion 40 defines that the two can be secured in the vertical direction to maximise the efficiency of the transmission of vertical forces. But the coupling groove 50 still has an opening in the horizontal direction in order to allow the insertion of the coupling portion 40. The direction in which the coupling groove 50 is reserved to allow the coupling portion 40 to be inserted is defined as a front surface, and the wedge-shaped coupling portion 40 can be restricted from coming off from the front surface by providing the third locking piece 53 on the front surface. The technical effects of safety and fastening are better achieved.

Optionally, the width of the welding head 2 is larger than that of the push rod 1 along the width direction, and the width direction is perpendicular to the connecting line direction of the two welding heads. In general, in conjunction therewith, the direction of the vibrations generated by the sonotrode is perpendicular to the line joining the two welding heads 20. The width of the welding head 2 is larger than that of the push rod 1, so that resonance can be better realized, and the energy transmission efficiency of the ultrasonic generator is improved.

In order to better promote the resonance of the putter 1 and the energy transfer of the vibrations, in some embodiments, the putter 1 has a rectangular cross-section, and the ratio X between the length and the width of the cross-section satisfies the condition: x is more than or equal to 1.2 and less than or equal to 3.0. Too high ratio X may result in the push rod 1 being too flat, may result in a reduction in structural strength, may be detrimental to the life of the push rod 1, and may also increase the difficulty of the manufacturing process. Too low a ratio X may cause the push rod 1 to be too squarely oriented, which is not conducive to vibration conduction. In some preferred embodiments, the ratio X of the length to the width of the cross-section is chosen to be 2.

In other embodiments, the cross section of the putter 1 may be elliptical, and the ratio Y between the major axis and the minor axis of the cross section satisfies the condition: y is more than or equal to 1.2 and less than or equal to 3.0. Too high ratio Y may result in too flat the push rod 1, may result in a reduction in structural strength, may be detrimental to the life of the push rod 1, and may also increase the difficulty of the manufacturing process. Too low a ratio Y may result in the push rod 1 being too squarely oriented to facilitate the conduction of vibrations. In some preferred embodiments, the ratio Y of the major axis to the minor axis of the cross-section is chosen to be 2.

In other embodiments, referring to fig. 2, the number of the seat imprints 30 is the same as the number of the horn imprints 20, and the seat imprints 30 are slightly larger than the horn imprints 20, i.e. it is sufficient to ensure that the movement amplitude of the horn imprints 20 still falls within the size range of the seat imprints 30 after the ultrasonic generator is driven to the horn imprints 20. The width of the anvil footprint 30 may be set to be generally +2mm greater than the width of the horn footprint 20. A first groove 21 is arranged between two adjacent welding head welding imprints 20, and a second groove 31 corresponding to the first groove 21 is arranged between two adjacent welding seat welding imprints 30. The first groove 21 is formed in the welding head seal 20, so that the clearance height of the welding head seal 20 is increased, and the second groove 31 of the corresponding welding seat seal 30 is increased, so that the clearance height of the welding head 2 is further increased.

In order to weld the tabs on the electrode assembly, in some embodiments, the ultrasonic welding device provided in the embodiments of the present application further includes a clamp (not shown in the drawings) for clamping the tabs on the electrode assembly, wherein the clamp includes a pressing plate and a base plate, and the tabs are clamped between the pressing plate and the base plate; the pressure plate has a first hollowed-out portion through which the welding head seal 20 is configured to abut against the tab, and the first groove 21 is used for avoiding the pressure plate. The base plate has a second hollowed-out through which the soldering nest solder stamp 30 is configured to pass to abut against the tab, and a second groove 31 is used to avoid the base plate. The welding head welding seal 20 and the welding seat welding seal 30 respectively penetrate through the pressing plate and the bottom plate to compress the lugs, so that the electrode assembly can be fixed by means of the cooperation of the clamp, and the technical effect of more accurate welding is achieved.

In the embodiment shown in fig. 1, the ultrasonic welding apparatus provided in the embodiment of the present application further includes a support rod 6 for supporting the soldering nest 3 and connected to the bottom of the soldering nest 3. The sectional area of the support rod 6 is smaller than that of the welding seat 3. Support through the supporting seat and weld seat 3 and erect high welding seat 3, also can reach resonance better to promote welding efficiency's technological effect. The cross-sectional area of the support rod 6 is smaller than that of the welding seat 3, so that the resonance efficiency can be further improved.

In some embodiments, the other end of the support bar 6 may also be fixed to the support table 7. The supporting platform can be a circular truncated cone, a cylinder or a prism. The support base 7 is designed to make the structure of the solder socket 3 more stable.

The above only is the embodiment of the present invention, not limiting the patent protection scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (12)

1. An ultrasonic welding apparatus, comprising:

the push rod is used for being connected with the ultrasonic generator;

the welding head is arranged at one end of the push rod, the welding end of the welding head is provided with more than two welding heads for welding, and a first groove is formed between the welding heads for welding;

and the welding seat is arranged opposite to the welding head, and the welding seat welding mark is arranged on the welding seat at the position corresponding to the welding mark of the welding head.

2. The ultrasonic welding device of claim 1, further comprising:

the connector is used for being connected with the other end of the push rod;

the connecting seat is used for being connected with the connecting head, and the connecting seat comprises a stress surface used for bearing the thrust of a hydraulic cylinder or an air cylinder.

3. The ultrasonic welding device of claim 2, wherein the connector comprises a connecting portion, and the connector base has a connecting groove adapted to the connecting portion, and the connecting groove is used for limiting the connecting portion.

4. The ultrasonic welding device of claim 3 wherein the connecting portion is a wedge connecting portion, the connecting groove is adapted to mate with the wedge connecting portion, the top surface of the wedge connecting portion is a wide wedge surface, the top surface of the wedge connecting portion abuts the bottom surface of the connecting groove, and the side surfaces of the wedge connecting portion abuts the side walls of the connecting groove.

5. The ultrasonic welding device of claim 3, wherein the connecting seat comprises a first locking piece and a second locking piece, and the first locking piece and the second locking piece are spliced to form a locking part with the connecting groove.

6. The ultrasonic welding device of claim 5, wherein the connecting portion is a wedge-shaped connecting portion, the bottom surface of the first locking piece is attached to the top surface of the wedge-shaped connecting portion, one side wall of the first locking piece is attached to the side surface of the wedge-shaped connecting portion, the first locking piece is connected with the second locking piece, the portion, exceeding the bottom surface of the first locking piece, of the second locking piece extends inwards to abut against the other side surface of the wedge-shaped connecting portion, and the first locking piece and the second locking piece form a mortise type portion of the limiting wedge-shaped connecting portion after being fastened.

7. The ultrasonic welding device of claim 6, further comprising a third locking piece connected to the front face of the first locking piece, wherein the third locking piece comprises a protrusion extending beyond the bottom surface of the first locking piece, and wherein the protrusion is capable of limiting the wedge-shaped connection from coming off the front face when the third locking piece is fastened to the first locking piece.

8. The ultrasonic welding apparatus of claim 1,

and along the width direction, the width of the welding head is greater than that of the push rod, and the width direction is vertical to the connecting line direction of the welding marks of the two welding heads.

9. The ultrasonic welding device of claim 8, wherein the push rod is rectangular in cross section, and the ratio X of the length to the width of the cross section satisfies the condition: x is more than or equal to 1.2 and less than or equal to 3.0, or,

the cross section of the push rod is elliptical, and the ratio Y of the long axis to the short axis of the cross section meets the condition: y is more than or equal to 1.2 and less than or equal to 3.0.

10. The ultrasonic welding device of claim 1, wherein the number of the anvil imprints is the same as the number of the horn imprints, the anvil imprints are slightly larger than the horn imprints, a first groove is disposed between two adjacent horn imprints, and a second groove corresponding to the first groove is disposed between two adjacent anvil imprints.

11. The ultrasonic welding device of claim 10, further comprising a clamp for clamping a tab on the electrode assembly, the clamp comprising a pressure plate and a base plate, the tab being clamped between the pressure plate and the base plate;

the pressure plate is provided with a first hollow part, the welding head welding mark is configured to penetrate through the first hollow part to abut against the lug, and the first groove is used for avoiding the pressure plate;

the bottom plate is provided with a second hollowed-out portion, the welding seat welding mark is configured to penetrate through the second hollowed-out portion to abut against the lug, and the second groove is used for avoiding the bottom plate.

12. The ultrasonic welding apparatus of claim 1 further comprising a support rod for supporting the horn and attached to the base of the horn.

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