Efficient ultrasonic roll welding equipment

Abstract

The utility model discloses an efficient ultrasonic roll welding device which comprises a machine base, a lifting unit, a welding unit, a synchronous reversing unit, a supporting plate, a welding head and a base, the machine base is used for installing and fixing the lifting unit, the welding unit and the synchronous reversing unit, the lifting unit is used for lifting the welding unit, and the welding unit is used for welding a battery. The synchronous reversing unit is used for conducting synchronous reverse lifting motion on the two welding units, the supporting plate is used for installing the welding unit on the lower portion, and the lifting unit drives the synchronous reversing unit to rotate while driving the welding unit on the upper portion to weld a battery in the lifting process. And therefore, the battery is welded while the lower welding unit and the upper welding unit are driven to synchronously and reversely ascend and descend, and the welding efficiency of the battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic welding, in particular to a high-efficiency ultrasonic roll welding device. Background Art

[0002] As battery companies become more interested in composite current collectors and their manufacturing and application processes mature, integrating them into battery mass production lines has become a crucial consideration. Because the metal coatings on both sides of the composite current collector are not in direct contact, ultrasonic welding is required to create an adapter, which is then used to weld the tabs to the adapter to achieve conductivity. Currently, some equipment manufacturers have developed fully automated composite current collector welding lines using existing ultrasonic welding machines.

[0003] The single-sided ultrasonic welding of the current transfer welding automatic wire welding will cause differences in the welding quality of the top and bottom layers. The current welding machine mainly uses a single-roller high-frequency vibration method for welding. Therefore, the welding material passes quickly during high-speed welding, and the energy received by the welding area is insufficient, resulting in poor welding, or the top layer (that is, close to the ultrasonic layer) is welded while the bottom layer is still poorly welded, resulting in poor welding quality. At the same time, since the current welding method is to roll weld the battery by unilateral movement of the welding head, the welding efficiency is slow. Summary of the Invention

[0004] The purpose of the utility model is to provide a high-efficiency ultrasonic seam welding device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A high-efficiency ultrasonic roll welding equipment, characterized in that: the high-efficiency ultrasonic roll welding equipment includes a machine base, a lifting unit, a welding unit, a synchronous reversing unit, a support plate, a welding head and a base; the machine base is fixedly installed on a first horizontal plane, the lifting unit is fixedly installed on the machine base, the synchronous reversing unit is installed inside the machine base, the synchronous reversing unit has the function of realizing synchronous reverse lifting and lowering movement of the welding unit, the support plate is movably installed inside the machine base, the welding head is fixedly connected to the welding unit, and the base is fixedly connected to the welding unit. The first horizontal plane, i.e., the base surface for installing the machine base, can be a horizontal ground.

[0007] The machine base is used to install and fix the lifting unit, welding unit and synchronous reversing unit. The lifting unit is used to lift the welding unit, the welding unit is used to weld the battery, the synchronous reversing unit is used to synchronize the two welding units in reverse lifting and lowering movements, the support plate is used to install the welding unit below, and the welding head and the base are used together for simultaneous welding of the battery to improve the welding quality.

[0008] Furthermore, the lifting unit includes a servo electric cylinder, a pressure sensor, a slider and a movable part. The servo electric cylinder is fixedly installed on the side surface of the machine base away from the first horizontal plane. The piston rod of the servo electric cylinder passes through the upper surface of the machine base and is movably connected to the pressure sensor. The pressure sensor is fixedly installed on the slider. The slider is slidably connected to the movable part. There are two movable parts. The movable part is fixedly installed on the inner surface of the machine base away from the first horizontal plane perpendicular to the first horizontal plane. The piston rod end of the slider servo electric cylinder is fixedly connected, and the slider is fixedly installed on the welding unit.

[0009] During the continuous movement of batteries on the battery production line, when the battery tab enters the welding area, the controller controls the servo electric cylinder to drive the piston rod to drive the slider to move up and down in the movable part, thereby driving the welding head bases on the welding unit to approach each other to perform roll welding on the battery tab, thereby realizing the welding of the battery. When the pressure sensor senses that the reaction force exerted on the lifting unit exceeds the preset value, the pressure sensor transmits a signal to the controller, and the controller controls the servo electric cylinder to drive the welding unit to increase the distance between it and the battery tab, thereby avoiding the situation where the battery tab is crushed and damaged due to the two welding units being too close, thereby improving the welding quality.

[0010] Furthermore, the welding unit includes a servo motor, a driving wheel, a transmission track, a driven wheel, a transducer, a fixed plate, a transmission rod and a variable amplitude rod. The fixed plate is vertically fixedly mounted on the slider, the servo motor is fixedly mounted on the fixed plate, the driving wheel is fixedly mounted on the output end of the servo motor, the transmission rod passes through the fixed plate, the driven wheel is fixedly mounted on the transmission rod, the driven wheel is mounted on the same side as the driving wheel, the transmission track is sleeved on the driving wheel and the driven wheel, one end of the transmission rod is fixedly connected to the transducer, the transducer is mounted on the same side as the driving wheel, the other end of the transmission rod is fixedly connected to one end of the variable amplitude rod close to the fixed plate, the variable amplitude rod is mounted on the other side of the fixed plate, and the fixed plate is fixedly connected to the synchronous reversing unit.

[0011] When the battery tab enters the welding area, the servo motor is started to drive the driving wheel to rotate, and the driven wheel is driven to rotate under the action of the transmission track. The transmission rod transmits the rotation to the amplitude rod, thereby rotating the welding head or base. At this time, the high-frequency current is the ultrasonic generator that converts the 50 / 60Hz current into 20 / 40kHz electrical energy and connects it to the transducer. The transducer converts the received high-frequency current into high-frequency mechanical vibration and further transmits it to the amplitude rod. The amplitude rod adjusts the vibration amplitude and transmits the mechanical vibration to the welding head or base, thereby rotating the welding head or base while maintaining high-frequency vibration, increasing the instantaneous output energy of the welding machine, thereby improving welding efficiency.

[0012] Furthermore, the synchronous reversing unit includes rack 1, gear, rack 2 and a rotating column. The rotating column is rotatably installed in the machine base. The rotating column is placed parallel to the fixed plate. The gear is fixedly installed on the rack 1 and is fixedly installed on the surface of the fixed plate close to the servo motor on the side away from the first horizontal plane. The rack 2 is vertically fixedly installed on the support plate. The gear is symmetrically meshed with the rack 1 and the rack 2 respectively.

[0013] When the lifting unit is lowered or raised, the upper welding unit drives the welding head and rack 1 to perform synchronous lifting and lowering movements. Under the transmission action of the gear, it drives rack 2 to perform synchronous lifting and lowering movements in the opposite direction, thereby driving the support plate to perform reverse lifting and lowering movements together. The lower welding unit drives the base and welding head to synchronously move closer to and away from each other, reducing the time that the welding head and base contact the battery tabs, improving welding efficiency, and avoiding uneven stress caused by one-sided welding, thereby reducing the risk of part deformation and improving welding quality.

[0014] Furthermore, the welding head, amplitude transformer and transducer are coaxially connected in sequence.

[0015] In order to facilitate ultrasonic rolling welding, the welding head, the amplitude transformer and the transducer are coaxially connected in sequence.

[0016] Furthermore, the pressure sensor is electrically connected to an external controller.

[0017] In order to avoid the battery tabs being crushed due to the close distance between the two welding units, and to facilitate timely control of the lifting movement of the lifting unit, the pressure sensor is electrically connected to the external controller to timely change the distance between the welding units and improve the welding quality.

[0018] Furthermore, it is characterized in that: there are two lifting units, one corresponding to the two welding units.

[0019] In order to cooperate with the synchronous reversing unit to synchronously control the movement speed of the two welding units, it is avoided that the welding unit on one side moves too fast, resulting in uneven pressure on the battery tab and causing deformation, thereby further improving the welding quality of the battery tab.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention avoids the situation in which the battery tabs are crushed and damaged due to the two welding units being too close to each other through the lifting unit, thereby improving the welding quality; the welding unit rotates the welding head or the base while maintaining high-frequency vibration, thereby improving the instantaneous output energy of the welding machine and thus improving the welding efficiency; the synchronous reversing unit enables the lower welding unit to drive the base and the welding head to move towards and away from each other synchronously, thereby reducing the time that the welding head and the base contact the battery tabs, improving the welding efficiency, and at the same time avoiding the uneven stress generated during welding due to one-sided welding, thereby reducing the risk of parts deformation and improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0023] Figure 2 It is a front view structural diagram of the utility model;

[0024] Figure 3 This utility model Figure 2 Schematic diagram of the cross-section structure at AA;

[0025] Figure 4 It is a left view structural schematic diagram of the utility model;

[0026] Figure 5 This utility model Figure 4 Schematic diagram of the cross-section structure at BB;

[0027] In the figure: 1-machine base, 2-lifting unit, 21-servo electric cylinder, 22-pressure sensor, 23-slider, 24-movable part, 3-welding unit, 31-servo motor, 32-driving wheel, 33-transmission crawler, 34-driven wheel, 35-transducer, 36-fixed plate, 37-transmission rod, 38-amplifier, 4-synchronous reversing unit, 41-rack 1, 42-gear, 43-rack 2, 44-rotating column, 5-support plate, 6-welding head, 7-base. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] This utility model provides the following technical solutions:

[0030] like Figure 1 、 2 As shown in Figures 3 and 4, a high-efficiency ultrasonic roll welding equipment includes a machine base 1, a lifting unit 2, a welding unit 3, a synchronous reversing unit 4, a support plate 5, a welding head 6 and a base 7; the machine base 1 is fixedly installed on the first horizontal plane, the lifting unit 2 is fixedly installed on the machine base 1, the synchronous reversing unit 4 is installed inside the machine base 1, the synchronous reversing unit 4 has the function of realizing synchronous reverse lifting and lowering movement of the welding unit 3, the support plate 5 is movably installed inside the machine base 1, the welding head 6 is fixedly connected to the welding unit 3, and the base 7 is fixedly connected to the welding unit 3. The first horizontal plane is the base surface for installing the machine base, which can be a horizontal ground.

[0031] The machine base 1 is used for installing and fixing the lifting unit 2, the welding unit 3 and the synchronous reversing unit 4. The lifting unit 2 is used for lifting the welding unit 3, the welding unit 3 is used for welding the battery, and the synchronous reversing unit 4 is used for synchronous and reverse lifting and lowering of the two welding units 3. The support plate 5 is used for installing the lower welding unit. The welding head 6 and the base 7 are used together for simultaneous welding of the battery to improve the welding quality.

[0032] like Figure 1 、 3 As shown in Figure 5, the lifting unit 2 includes a servo cylinder 21, a pressure sensor 22, a slider 23 and a movable part 24. The servo cylinder 21 is fixedly mounted on the side surface of the machine base 1 away from the first horizontal plane. The piston rod of the servo cylinder 21 passes through the upper surface of the machine base 1 and is movably connected to the pressure sensor 22. The pressure sensor 22 is fixedly mounted on the slider 23. The slider 23 is slidably connected to the movable part 24. There are two movable parts 24. The movable parts 24 are fixedly mounted on the inner surface of the machine base 1 away from the first horizontal plane perpendicular to the first horizontal plane. The slider 23 is fixedly connected to the end of the piston rod of the servo cylinder 21. The slider 23 is fixedly mounted on the welding unit 3.

[0033] During the continuous movement of batteries on the battery production line, when the battery tab enters the welding area, the controller controls the servo electric cylinder 21 to drive the piston rod to drive the slider 23 to move up and down in the slide 24, thereby driving the welding head 6 and the base 7 on the welding unit 3 to approach each other to perform roll welding on the battery tab, thereby realizing the welding of the battery. When the pressure sensor 22 senses that the reaction force exerted on the lifting unit 2 exceeds the preset value, the pressure sensor 22 transmits a signal to the controller, and the controller controls the servo electric cylinder 21 to drive the welding unit 3 to increase the distance between it and the battery tab, thereby avoiding the situation where the battery tab is crushed and damaged due to the two welding units being too close, thereby improving the welding quality.

[0034] like Figure 1 、 3 As shown in Figure 5, the welding unit 3 includes a servo motor 31, a driving wheel 32, a transmission belt 33, a driven wheel 34, a transducer 35, a fixed plate 36, a transmission rod 37 and a horn 38. The fixed plate 36 is vertically fixedly mounted on the slider 23, the servo motor 31 is fixedly mounted on the fixed plate 36, the driving wheel 32 is fixedly mounted on the output end of the servo motor 31, the transmission rod 37 passes through the fixed plate 36, the driven wheel 34 is fixedly mounted on the transmission rod 37, the driven wheel 34 is mounted on the same side as the driving wheel 32, the transmission belt 33 is sleeved on the driving wheel 32 and the driven wheel 34, one end of the transmission rod 37 is fixedly connected to the transducer 35, the transducer 35 is mounted on the same side as the driving wheel 32, the other end of the transmission rod 37 is fixedly connected to one end of the horn 38 close to the fixed plate 36, the horn 38 is mounted on the other side of the fixed plate 36, and the fixed plate 36 is fixedly connected to the synchronous reversing unit 4.

[0035] When the battery tab enters the welding area, the servo motor 31 is started to drive the driving wheel 32 to rotate, and the driven wheel 34 is driven to rotate under the action of the transmission track 33. The transmission rod 37 transmits the rotation to the amplitude rod 38, thereby rotating the welding head 6 or the base 7. At this time, the high-frequency current is the ultrasonic generator that converts the 50 / 60Hz current into 20 / 40kHz electrical energy and connects it to the transducer 35. The transducer 35 converts the received high-frequency current into high-frequency mechanical vibration and further transmits it to the amplitude rod 38. The amplitude rod 38 adjusts the vibration amplitude and transmits the mechanical vibration to the welding head 6 or the base 7, thereby rotating the welding head 6 or the base 7 while maintaining high-frequency vibration, thereby increasing the instantaneous output energy of the welding machine and thus improving the welding efficiency.

[0036] like Figure 1 、 35, the synchronous reversing unit 4 includes a rack 1 41, a gear 42, a rack 2 43 and a rotating column 44. The rotating column 44 is rotatably mounted in the machine base 1. The rotating column 44 is placed parallel to the fixed plate 36. The gear is fixedly mounted on the rack 1 41 and is fixedly mounted on the surface of the fixed plate 36 close to the servo motor 31 on the side away from the first horizontal plane. The rack 2 43 is vertically fixedly mounted on the support plate 5. The gear 42 is symmetrically meshed with the rack 1 41 and the rack 2 43 respectively.

[0037] When the lifting unit 2 is lowered or lifted, the upper welding unit 3 drives the welding head 6 and rack 1 41 to perform synchronous lifting and lowering movements. Under the transmission action of the gear 42, the rack 2 43 is driven to perform synchronous reverse lifting and lowering movements, thereby driving the support plate 5 to perform reverse lifting and lowering movements together, so that the lower welding unit 3 drives the base 7 and the welding head 6 to synchronously move closer to and away from each other, reducing the time that the welding head 6 and the base 7 are in contact with the battery tab, improving welding efficiency, and avoiding the uneven stress generated during welding due to one-sided welding, thereby reducing the risk of part deformation and improving welding quality.

[0038] like Figure 1 、 3 As shown, the welding head 6, the horn 38 and the transducer 35 are coaxially connected in sequence.

[0039] In order to facilitate ultrasonic rolling welding, the welding head 6, the horn 38 and the transducer 35 are coaxially connected in sequence.

[0040] like Figure 3 As shown, the pressure sensor 22 is electrically connected to the external controller.

[0041] In order to avoid the battery tabs being crushed due to the close distance between the two welding units 3 and to facilitate timely control of the lifting movement of the lifting unit 2, the pressure sensor 22 is electrically connected to the external controller to timely change the distance between the welding units 3 and improve the welding quality.

[0042] like Figure 5 As shown, there are two lifting units 2, one corresponding to the two welding units 3.

[0043] In order to cooperate with the synchronous reversing unit 4 to synchronously control the movement speed of the two welding units 3, it is avoided that the welding unit 3 on one side moves too fast, resulting in uneven pressure on the battery tab and causing deformation, thereby further improving the welding quality of the battery tab.

[0044] The working principle of this utility model:

[0045] During the continuous movement of batteries on the battery production line, when the battery tab enters the welding area, the controller controls the servo electric cylinder 21 to drive the piston rod to drive the slider 23 to move up and down in the movable part 24, thereby driving the welding head 6 and the base 7 on the welding unit 3 to approach each other for roll welding of the battery tab, and starting the servo motor 31 to drive the driving wheel 32 to rotate, and under the action of the transmission crawler 33, the driven wheel 34 is driven to rotate, and the transmission rod 37 transmits the rotation to the amplitude rod 38, so that the welding head 6 or the base 7 rotates. At this time, the high-frequency current is the ultrasonic generator that converts 50 / 60Hz current into 20 / 40kHz electrical energy and connects it to the transducer 35. The transducer 35 converts the received high-frequency current into high-frequency mechanical vibration and further transmits it to the amplitude rod 38. The amplitude rod 38 adjusts the vibration amplitude and transmits the mechanical vibration to the welding head 6 or the base 7, so that the welding head 6 or the base 7 rotates while maintaining high-frequency vibration, thereby improving the instantaneous output energy of the welding machine and thus improving the welding efficiency.

[0046] When the lifting unit 2 is lowered or lifted, the upper welding unit 3 drives the welding head 6 and rack 1 41 to perform synchronous lifting and lowering movements. Under the transmission action of the gear 42, the rack 2 43 is driven to perform synchronous reverse lifting and lowering movements, thereby driving the support plate 5 to perform reverse lifting and lowering movements together, so that the lower welding unit 3 drives the base 7 and the welding head 6 to synchronously move closer to and away from each other, reducing the time that the welding head 6 and the base 7 are in contact with the battery tab, improving welding efficiency, and avoiding the uneven stress generated during welding due to one-sided welding, thereby reducing the risk of part deformation and improving welding quality.

[0047] When the pressure sensor 22 senses that the reaction force exerted on the lifting unit 2 exceeds a preset value, the pressure sensor 22 transmits a signal to the controller, and the controller controls the servo electric cylinder 21 to drive the welding unit 3 to increase the distance between the welding unit 3 and the battery tab, thereby avoiding the battery tab being crushed and damaged due to the two welding units being too close, thereby improving the welding quality.

[0048] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-efficiency ultrasonic seam welding equipment, characterized by: The high-efficiency ultrasonic rolling welding equipment comprises a machine base (1), a lifting unit (2), a welding unit (3), a synchronous reversing unit (4), a support plate (5), a welding head (6) and a base (7); the machine base (1) is fixedly mounted on a first horizontal plane, the lifting unit (2) is fixedly mounted on the machine base (1), the synchronous reversing unit (4) is mounted inside the machine base (1), the synchronous reversing unit (4) has the function of realizing synchronous reverse lifting and lowering movement of the welding unit (3), the support plate (5) is movably mounted inside the machine base (1), the welding head (6) is fixedly connected to the welding unit (3), and the base (7) is fixedly connected to the welding unit (3); The lifting unit (2) includes a servo electric cylinder (21), a pressure sensor (22), a slider (23) and a movable part (24), wherein the servo electric cylinder (21) is fixedly mounted on a side surface of the machine base (1) away from the first horizontal plane, the piston rod of the servo electric cylinder (21) passes through the upper surface of the machine base (1) and is movably connected to the pressure sensor (22), the pressure sensor (22) is fixedly mounted on the slider (23), the slider (23) is movably connected to the movable part (24), there are two movable parts (24), the movable parts (24) are fixedly mounted perpendicular to the first horizontal plane on the inner surface of the machine base (1) away from the first horizontal plane, the slider (23) is fixedly connected to the end of the piston rod of the servo electric cylinder (21), and the slider (23) is fixedly mounted on the welding unit (3); The welding unit (3) includes a servo motor (31), a driving wheel (32), a transmission crawler (33), a driven wheel (34), a transducer (35), a fixed plate (36), a transmission rod (37) and a horn (38), wherein the fixed plate (36) is vertically fixedly mounted on the slider (23), the servo motor (31) is fixedly mounted on the fixed plate (36), the driving wheel (32) is fixedly mounted on the output end of the servo motor (31), the transmission rod (37) passes through the fixed plate (36), and the driven wheel (34) is fixedly mounted on the transmission rod (37). The driven wheel (34) is mounted on the same side as the driving wheel (32), the transmission crawler (33) is sleeved on the driving wheel (32) and the driven wheel (34), one end of the transmission rod (37) is fixedly connected to the transducer (35), the transducer (35) is mounted on the same side as the driving wheel (32), the other end of the transmission rod (37) is fixedly connected to one end of the amplitude changing rod (38) close to the fixed plate (36), the amplitude changing rod (38) is mounted on the other side of the fixed plate (36), and the fixed plate (36) is fixedly connected to the synchronous reversing unit (4).

2. The high-efficiency ultrasonic seam welding equipment according to claim 1, characterized in that: The synchronous reversing unit (4) includes a rack 1 (41), a gear (42), a rack 2 (43) and a rotating column (44), wherein the rotating column (44) is rotatably mounted in the machine base (1), and the rotating column (44) is placed parallel to the fixed plate (36). The gear (42) is fixedly mounted on the rack 1 (41), which is fixedly mounted on the surface of the fixed plate (36) close to the servo motor (31) on the side away from the first horizontal plane. The rack 2 (43) is vertically fixedly mounted on the support plate (5), and the gear (42) is symmetrically meshed with the rack 1 (41) and the rack 2 (43) respectively.

3. The high-efficiency ultrasonic seam welding equipment according to claim 1, characterized in that: The welding head (6), amplitude transformer (38) and transducer (35) are coaxially connected in sequence.

4. The high-efficiency ultrasonic seam welding equipment according to claim 1, characterized in that: The pressure sensor (22) is electrically connected to an external controller.

5. The high-efficiency ultrasonic seam welding equipment according to claim 1, characterized in that: There are two lifting units (2), one corresponding to the two welding units (3).

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