Composite current collector double-ultrasonic roll welding equipment

Abstract

The utility model discloses composite current collector double-ultrasonic roll welding equipment which comprises a machine frame, and a membrane material unwinding mechanism, an A-face foil unwinding mechanism, a B-face foil unwinding mechanism, a front traction rolling mechanism, an ultrasonic double-roll welding mechanism and a winding mechanism are installed on the machine frame. Discharging deviation rectifying devices are arranged between the film unwinding mechanism and the front traction rolling mechanism and between the A-face foil unwinding mechanism and the front traction rolling mechanism and between the B-face foil unwinding mechanism and the front traction rolling mechanism respectively. A self-weight buffering mechanism and a receiving deviation rectifying mechanism are arranged between the ultrasonic double-roll welding mechanism and the winding mechanism. The composite current collector double-ultrasonic roll welding system is compact in structure, small in size and suitable for being used by small and medium-sized enterprises.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic welding, in particular to a composite current collector double ultrasonic roller welding device. Background Art

[0002] The composite current collector is one of the indispensable electrode materials for lithium-ion batteries, and its main function is to conduct electricity. The composite current collector acts as a carrier of the positive and negative active materials, and also acts as a collector and conductor of positive and negative electrons. Its function is to collect the current generated by the active materials of the battery to generate a larger output current. The composite current collector has many comprehensive properties such as high conductivity, good stability, good mechanical strength, and low cost. The composite current collector is highly compatible with traditional battery production lines, but because the polymer material in the middle of the composite current collector is not conductive, the metal layers at the upper and lower ends cannot be connected, and the direction perpendicular to the plane of the current collector is not conductive, which will cause the battery internal resistance to be large and the performance to be poor. Therefore, ultrasonic welding equipment is required for welding production, that is, a layer of traditional foil is added between the composite current collectors to be used as a transition body.

[0003] The Chinese utility model patent with authorization announcement number CN207868297U discloses a processing equipment for secondary battery current collector, including: a foil unwinding roller; a composite current collector unwinding roller; a first welding device and a second welding device; and a winding roller, wherein the first welding device is configured to weld the foil to one side of the composite current collector, and the second welding device is configured to weld the foil to the other side of the composite current collector, and the winding roller winds up the composite current collector with the foil welded on both sides. Among them, the first welding device and the second welding device can weld the foil to both sides of the composite current collector respectively, so that the foil can be used as the pole ear of the composite current collector, and the current in the battery cell can be transmitted through the transfer of the foil. The above-mentioned equipment requires a lot of rollers, resulting in the problem of large overall volume occupation. Utility Model Content

[0004] The purpose of the utility model is to provide a double ultrasonic roller welding device for composite current collectors with a compact structure based on the above-mentioned deficiencies in the prior art.

[0005] The utility model solves the technical problem by adopting the following technical solution: a composite current collector double ultrasonic roller welding equipment, comprising a frame, on which a film material unwinding mechanism, an A-side foil material unwinding mechanism, a B-side foil material unwinding mechanism, a front traction roller pressing mechanism, an ultrasonic double roller welding mechanism and a winding mechanism are installed, wherein the A-side foil material unwinding mechanism and the B-side foil material unwinding mechanism are respectively arranged on the upper and lower sides of the film material unwinding mechanism, and the film material unwinding mechanism, the A-side foil material unwinding mechanism and the B-side foil material unwinding mechanism are connected to the front traction roller pressing mechanism. A material unwinding and deviation correcting device is respectively arranged between the ultrasonic double-roll welding mechanism and the winding mechanism, a self-weight buffer mechanism and a material receiving and deviation correcting mechanism are arranged between the ultrasonic double-roll welding mechanism and the winding mechanism, the film material unwinding mechanism, the A-side foil material unwinding mechanism and the B-side foil material unwinding mechanism respectively correct and adjust the film material and the foil material through the material unwinding and deviation correcting device, and then press them together through the front traction roller pressing mechanism, and weld them through the ultrasonic double-roll welding mechanism to form a composite current collector membrane, and the composite current collector membrane is adjusted by the self-weight buffer mechanism and the material receiving and deviation correcting mechanism in turn, and then wound up by the winding mechanism.

[0006] Furthermore, a rear traction roller pressing mechanism is provided between the ultrasonic double-roll welding mechanism and the self-weight buffer mechanism, and an ultrasonic dust removal device is provided between the self-weight buffer mechanism and the material collection and correction mechanism. The ultrasonic dust removal device performs ultrasonic dust removal on the composite current collector membrane after welding, so that the rolled composite current collector membrane is neater.

[0007] Furthermore, a vertical supporting plate is provided on the frame, and the film material unwinding mechanism, A-side foil material unwinding mechanism, B-side foil material unwinding mechanism, front traction roller pressing mechanism, ultrasonic double-roll welding mechanism and winding mechanism are all installed on the vertical supporting plate, which can effectively save equipment floor space. A plurality of rollers are arranged on the vertical supporting plate to facilitate the transmission of the coiled material.

[0008] Furthermore, the film unwinding mechanism is arranged in the middle of the front end of the vertical support plate, the A-side foil unwinding mechanism and the B-side foil unwinding mechanism are placed on the rear side of the film unwinding mechanism and are symmetrically arranged on the upper and lower sides of the film unwinding mechanism, the front traction roller pressing mechanism is placed on the rear side of the A-side foil unwinding mechanism and the B-side foil unwinding mechanism and is arranged flush with the film unwinding mechanism, the ultrasonic double-roll welding mechanism is arranged above the rear side of the front traction roller pressing mechanism, and the winding mechanism is placed at the rear end bottom of the vertical support plate. Such an arrangement can greatly compress the size of the equipment and facilitate production arrangement.

[0009] Furthermore, the unwinding correction device includes an A-roll correction device, a B-roll correction device and a film material correction device. An A-roll correction device and a B-roll correction device are respectively arranged between the A-side foil unwinding mechanism and the B-side foil unwinding mechanism and the front traction roller pressing mechanism. A first tension sensor, a first tension detection roller and a film material correction device are sequentially arranged between the film material unwinding mechanism and the front traction roller pressing mechanism. A second tension detection roller and a second tension sensor are arranged between the front traction roller pressing mechanism and the ultrasonic double-roll welding mechanism.

[0010] The top end of the support leg is provided with a groove along the direction of the support rail, and one end of the film unwinding air shaft is connected to the frame, and the other end is supported by the groove. The support leg is also provided with an active clamping block that blocks the other end of the film unwinding air shaft from being separated from the groove. When the film needs to be replaced, the active clamping block can be opened, and the sliding support slide can be slid to make the other end of the film unwinding air shaft separate from the supporting vertical plate. This provides sufficient support for the film unwinding so that it is not easy to shake during work, and greatly facilitates the replacement of the film.

[0011] Furthermore, the A-side foil unwinding mechanism and the B-side foil unwinding mechanism both include a foil unwinding air shaft, one end of the foil unwinding air shaft is connected to the frame, and one end of the foil unwinding air shaft and the film unwinding air shaft are both equipped with a magnetic powder clutch, and the rotation speed of the foil unwinding air shaft and the film unwinding air shaft is automatically adjusted by the magnetic powder clutch, thereby changing the unwinding speed to achieve the purpose of tension balance.

[0012] Furthermore, the front traction roller pressing mechanism includes a front traction base and a front traction motor, a front traction upper pressing roller, a front traction lower pressing roller and two front traction clamping cylinders installed on the front traction base. The front traction motor is connected to and drives the front traction lower pressing roller to rotate, thereby driving the transmission of film and foil materials. A front traction smoothing gap for clamping the film and foil materials is arranged between the front traction upper pressing roller and the front traction lower pressing roller. Both ends of the front traction upper pressing roller are respectively installed on the front traction base through a front traction slide so as to be movable up and down. The two front traction clamping cylinders are respectively connected to the front traction slide and can drive the front traction upper pressing roller to move up and down, thereby adjusting the size of the front traction smoothing gap, so as to achieve the purpose of merging various film and foil materials, tightly pulling and flattening the film and foil materials.

[0013] Furthermore, the rear traction roller pressing mechanism includes a rear traction base and a rear traction motor installed on the rear traction base, a rear traction upper pressing roller, a first rear traction lower pressing roller, a second rear traction lower pressing roller, a welding and printing pressing wheel and two rear traction pressing cylinders, the first rear traction lower pressing roller is placed directly below the rear traction upper pressing roller, a rear traction smoothing gap for clamping and pressing film materials and foil materials is provided between the first rear traction lower pressing roller and the rear traction upper pressing roller, the second rear traction lower pressing roller is horizontally arranged with the first rear traction lower pressing roller and is placed on the rear side of the first rear traction lower pressing roller, the rear traction motor drives the first rear traction lower pressing roller and the second rear traction lower pressing roller to rotate synchronously through a belt transmission mechanism, the two ends of the rear traction upper pressing roller are respectively installed on the rear traction base through a rear traction slide and can be moved up and down, and the two rear traction pressing cylinders are respectively The rear traction slide is connected and can drive the rear traction upper pressure roller to move up and down, so as to adjust the size of the rear traction smoothing gap, so as to achieve the purpose of tightly traction of film and foil materials; the welding stamp pressure wheel is placed above the center between the first rear traction lower pressure roller and the second rear traction lower pressure roller, and the welding stamp pressure wheel is installed on the traction base through a moving mechanism, and the moving mechanism can adjust the upper and lower height positions between the welding stamp pressure wheel and the first rear traction lower pressure roller and the second rear traction lower pressure roller, and adjust the horizontal position of the axis of the welding stamp pressure wheel and the first rear traction lower pressure roller and the second rear traction lower pressure roller. According to the position of the foil on the film material, the position of the welding stamp pressure wheel is adjusted to align the welding stamp, and the gap between the welding stamp pressure wheel and the first rear traction lower pressure roller and the second rear traction lower pressure roller is pressed down, so that the composite current collector can flatten and shape the welding stamp when the rear traction roller pressure mechanism is pulling.

[0014] Furthermore, the deadweight buffer mechanism includes an adjustment fixing plate, an adjustment block, an adjustment roller, a counterweight mounting plate, a counterweight slide, an idler, a counterweight rope, an upper oil pressure buffer and a lower oil pressure buffer. The adjustment fixing plate and the counterweight mounting plate are respectively provided with vertical buffer guide rails. The adjustment block and the counterweight slide are respectively slidably mounted on the adjustment fixing plate and the counterweight mounting plate through the buffer guide rails. One end of the adjustment roller is mounted on the adjustment block. One end of the counterweight rope is connected to the counterweight slide, and the other end bypasses the idler to connect to the adjustment block. Several counterweight blocks are detachably mounted on the counterweight slide. The upper oil pressure buffer and the lower oil pressure buffer are mounted on the adjustment fixing plate and clamp the upper and lower sides of the adjustment block respectively. The adjustment roller is used for the transmission of film materials. According to the tension required for transmission, a suitable counterweight block is arranged on the counterweight slide so that the adjustment block and the counterweight slide are balanced. When the tension of the adjustment roller changes during operation, the upper oil pressure buffer and the lower oil pressure buffer can play a buffering role.

[0015] Compared with the prior art, the utility model has the beneficial effects that the composite current collector double ultrasonic roller welding system of the present solution has a compact structure and a small volume, and is suitable for use by small and medium-sized enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic plan view of the structural arrangement of the utility model;

[0018] Figure 3a and Figure 3b It is a three-dimensional schematic diagram of the frame structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the film unwinding mechanism structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the A-side foil unwinding mechanism of the utility model;

[0021] Figure 6 This is a schematic diagram of the winding mechanism structure of the utility model;

[0022] Figure 7 This is a schematic diagram of the structure decomposition of the front traction roller pressing mechanism of the utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the ultrasonic double-roll welding mechanism of the utility model;

[0024] Figure 9a and Figure 9b This is a schematic diagram of the structure of the rear traction roller pressing mechanism of the utility model;

[0025] Fig.10 It is a structural schematic diagram of the deadweight buffer mechanism of the utility model. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with specific embodiments. It is worth noting that these specific embodiments are only representative embodiments of the present invention, and the specific methods, devices, conditions, materials, etc. cited are not intended to limit the present invention or the corresponding specific embodiments. Figure 2 As a reference standard.

[0027] A composite current collector double ultrasonic roller welding equipment, such as Figure 1-As shown in Figure 3, it includes a frame 1, on which a vertical supporting plate 11 is provided, on which a film unwinding mechanism 2, an A-side foil unwinding mechanism 3, a B-side foil unwinding mechanism 4, a front traction roller pressing mechanism 5, an ultrasonic double-roll welding mechanism 6 and a winding mechanism 7 are installed. In this embodiment, the film unwinding mechanism 2 is arranged at the middle of the front end of the vertical supporting plate 11, the A-side foil unwinding mechanism 3 and the B-side foil unwinding mechanism 4 are placed on the rear side of the film unwinding mechanism 2 and are symmetrically arranged on the upper and lower sides of the film unwinding mechanism 2, the front traction roller pressing mechanism 5 is placed on the rear side of the A-side foil unwinding mechanism 3 and the B-side foil unwinding mechanism 4 and is arranged flush with the film unwinding mechanism 2, the ultrasonic double-roll welding mechanism 6 is arranged at the Above the rear side of the front traction roller-pressing mechanism 5, the winding mechanism 7 is placed at the rear end bottom of the vertical support plate 11, and an A-roll correction device 31, a first A-roll idler 32 and a second A-roll idler 33 are sequentially provided between the A-side foil unwinding mechanism 3 and the front traction roller-pressing mechanism 5, and a B-roll correction device 41, a first B-roll idler 42 and a second B-roll idler 43 are sequentially provided between the B-side foil unwinding mechanism 4 and the front traction roller-pressing mechanism 5, a first tension sensor 22, a first tension detection roller 23 and a film material correction device 21 are sequentially provided between the film material unwinding mechanism 2 and the front traction roller-pressing mechanism 5, and a second tension detection roller 51 and a second tension sensor 52 are sequentially provided between the front traction roller-pressing mechanism 5 and the ultrasonic double-roll welding mechanism 6. A rear traction roller pressing mechanism 8 is provided on the rear side of the ultrasonic double-roll welding mechanism 6, and the rear traction roller pressing mechanism 8 is flush with the ultrasonic double-roll welding mechanism 6. A self-weight buffer mechanism 9, a third tension sensor 73, a material receiving roller 72, an ultrasonic dust removal device 12, a meter 13 and a material receiving deviation correction device 71 are sequentially provided between the rear traction roller pressing mechanism 8 and the winding mechanism 7. The self-weight buffer mechanism 9, the third tension sensor 73, the material receiving roller 72, the ultrasonic dust removal device 12 and the meter 13 are arranged above the winding mechanism 7, and the material receiving deviation correction device 71 is arranged below the ultrasonic double-roll welding mechanism 6 and placed on the front side of the winding mechanism 7, so that the structure is optimized as much as possible, so as to optimize the transmission route of the coiled material by arranging the least number of rollers and save equipment space. The film material unwinding mechanism 2, the A-side foil material unwinding mechanism 3 and the B-side foil material unwinding mechanism 4 respectively correct and adjust the film material and the foil material through the unwinding correction device (including the A-roll correction device 31, the B-roll correction device 41 and the film material correction device 21), and then press them together through the front traction roller pressing mechanism 5. After being welded by the ultrasonic double-roll welding mechanism 6 to form a composite current collector membrane, the composite current collector membrane is flattened and welded and shaped by the rear traction roller pressing mechanism 8, and then adjusted by the self-weight buffer mechanism 9, the ultrasonic dust removal device 12 and the material collection correction mechanism 71 in turn, and then rolled up by the winding mechanism 7.In this embodiment, the first tension sensor 21, the second tension sensor 52 and the third tension sensor 73 are respectively arranged at the front, middle and rear of the membrane material to ensure the stability of the equipment transmission. The self-weight buffer mechanism 9 can automatically adjust the tension during the winding process of the composite current collector membrane to maintain a uniform winding rate. The frame 1 is also equipped with an ultrasonic generator 14 and an industrial control cabinet 15. The ultrasonic generator 14 is connected to the ultrasonic double-roll welding mechanism 6. The industrial control cabinet 15 is electrically connected to all electrical components of the equipment. The ultrasonic generator 14 and the industrial control cabinet 15 are placed on the back side of the vertical support plate 11. The back side of the vertical support plate 11 is also provided with a number of support reinforcement plates 111. The structures of the A roll correction device 31, the B roll correction device 41 and the membrane material correction device 21 in this embodiment refer to the existing correction devices. The meter 13 measures the winding stroke through a turntable counter to facilitate the counting of workload.

[0028] Further, such as Figure 4 As shown, the film material unwinding mechanism 2 includes a film material unwinding air shaft 201, a supporting vertical plate 202, a supporting slide 203 and a supporting bottom plate 204. The supporting bottom plate 204 is fixedly installed on the frame 1. The surface of the supporting bottom plate 204 is provided with a supporting slide rail 205. The supporting slide 203 is slidably installed on the supporting slide rail 205. The bottom end of the supporting vertical plate 202 is fixedly connected to the supporting slide 203. The upper part of the supporting vertical plate 202 is provided with a groove 2020 along the direction of the supporting slide rail. One end of the film material unwinding air shaft 201 is connected to the frame through a rolling bearing. 1, and the other end is placed in the slot 2020. The support vertical plate 202 is also equipped with an active block 206 for blocking the other end of the film unwinding air shaft 201. The active block 206 can prevent the other end of the film unwinding air shaft 201 from detaching from the slot 2020. When the film needs to be replaced, it is only necessary to open the active block 206 and slide the support slide 203 to detach the other end of the film unwinding air shaft 201 from the support vertical plate 201. This provides sufficient support for the film unwinding so that it is not easy to shake during operation, and greatly facilitates the replacement of the film. Among them, the film unwinding mechanism 2 also includes a tank chain 207, which can protect the wiring and piping of the electrical components of the equipment. Figure 5 As shown, the A-side foil unwinding mechanism 3 and the B-side foil unwinding mechanism 4 both include a foil unwinding air shaft 301, and one end of the foil unwinding air shaft 301 is connected to the frame 1 via a rolling bearing. Figure 6As shown, the winding mechanism 7 includes a winding drive motor 700, a winding air shaft 701, a winding support vertical plate 702, a winding support slide 703 and a winding support bottom plate 704. The structure of the winding mechanism 7 is similar to that of the film unwinding mechanism 2, except that it also includes a winding drive motor 700. The winding drive motor 700 is connected to one end of the winding air shaft 701 through a belt transmission mechanism to provide power for its winding. A magnetic powder clutch 209 is installed at one end of the foil unwinding air shaft 201 and the film unwinding air shaft 301. The magnetic powder clutch 209 automatically adjusts the rotation speed of the foil unwinding air shaft 201 and the film unwinding air shaft 209, thereby changing the unwinding speed to achieve the purpose of tension balance.

[0029] Further, such as Figure 7 As shown, the front traction rolling mechanism 5 includes a front traction base and a front traction motor 501, a front traction upper pressure roller 502, a front traction lower pressure roller 503 and two front traction pressing cylinders 504 installed on the front traction base. The front traction base is composed of a bottom plate 505, a vertical plate 506 and a top plate 507. A front traction smoothing gap for clamping and pressing the film and foil is set between the front traction upper pressure roller 502 and the front traction lower pressure roller 503. The front traction motor 501 is connected to and drives the front traction lower pressure roller 503 to rotate, thereby driving the transmission of the film and foil. The two ends of the front traction upper pressure roller 502 are respectively installed on the front traction base through the front traction slide 508 so that they can move up and down. The two front traction pressing cylinders 504 are respectively connected to the front traction slide 508 and can drive the front traction upper pressure roller 502 to move up and down, thereby adjusting the size of the front traction smoothing gap, so as to achieve the purpose of merging various film and foil materials, tightly traction and flattening the film and foil materials.

[0030] Further, such as Figure 8 As shown, the ultrasonic double-roll welding mechanism 6 includes a welding chassis 61 and two ultrasonic welding mechanisms 62, and its structure can refer to the applicant's prior application scheme, whose authorization announcement number is CN217096133U, and the utility model name is an ultrasonic double-roll welding device. Compared with the prior application scheme, the difference between this scheme and the prior application scheme is that it also includes a welding base 63, a height adjustment seat 64 and a horizontal adjustment seat 65. The welding head positions of the two ultrasonic welding mechanisms 62 are provided with a welding platform supporting the composite current collecting membrane body, the welding chassis 61 is installed on the horizontal adjustment seat 65, the upper end surface of the height adjustment seat 64 is provided with a horizontal guide rail, and the horizontal adjustment seat 65 is movably installed on the horizontal guide rail. The welding base 63 and the height adjustment seat 64 are connected by a number of adjustable telescopic rods, so that the ultrasonic double-roll welding mechanism 6 can be flexibly arranged on the equipment so that the ultrasonic welding head is aligned with the workpiece.

[0031] Further, such as Figure 9a and Figure 9b As shown, the rear traction roller pressing mechanism 8 includes a rear traction base 81 and a rear traction motor 82, a rear traction upper pressing roller 83, a first rear traction lower pressing roller 84, a second rear traction lower pressing roller 85, a welding and printing pressing wheel 86 and two rear traction pressing cylinders 87 installed on the rear traction base 81. The first rear traction lower pressing roller 84 is placed directly below the rear traction upper pressing roller 83. A rear traction smoothing gap for clamping and pressing film materials and foil materials is provided between the first rear traction lower pressing roller 84 and the rear traction upper pressing roller 83. The second rear traction lower pressing roller 85 is arranged horizontally with the first rear traction lower pressing roller 84 and is placed on the rear side of the first rear traction lower pressing roller 84. The rear traction motor 82 drives the first rear traction lower pressing roller 84 and the second rear traction lower pressing roller 85 to rotate synchronously through a belt transmission mechanism. The two ends of the rear traction upper pressing roller 83 are respectively installed on the rear traction base 81 through a rear traction slide 830 so as to be movable up and down. The two rear traction pressing cylinders 87 The rear traction slide 830 is respectively connected to the rear traction slide 830 and can drive the rear traction upper pressure roller 83 to move up and down, so as to adjust the size of the rear traction smoothing gap to achieve the purpose of tightly traction of the film and foil; the welding stamp pressure wheel 86 is placed above the center between the first rear traction lower pressure roller 84 and the second rear traction lower pressure roller 85, and the welding stamp pressure wheel 86 is installed on the traction base 81 through a moving mechanism 88. The moving mechanism 88 can adjust the upper and lower height positions between the welding stamp pressure wheel 886 and the first rear traction lower pressure roller 84 and the second rear traction lower pressure roller 85, and adjust the axial horizontal position of the welding stamp pressure wheel 86 and the first rear traction lower pressure roller 84 and the second rear traction lower pressure roller 85. According to the position of the foil on the film, the position of the welding stamp pressure wheel 86 is adjusted to align the welding stamp, and the gap between the welding stamp pressure wheel 86 and the first rear traction lower pressure roller 84 and the second rear traction lower pressure roller 85 is pressed down, so that the composite current collector can be flattened and shaped when the rear traction roller pressure mechanism is pulled.

[0032] Further, such as Fig.10As shown, the deadweight buffer mechanism 9 includes an adjustment fixing plate 91, an adjustment block 92, an adjustment roller 93, a counterweight mounting plate 94, a counterweight slide 95, an idler wheel 96, a counterweight rope 97, an upper oil pressure buffer 98 and a lower oil pressure buffer 99. The adjustment fixing plate 91 and the counterweight mounting plate 94 are respectively provided with vertical buffer guide rails. The adjustment block 92 and the counterweight slide 95 are respectively slidably mounted on the adjustment fixing plate 91 and the counterweight mounting plate 94 through the buffer guide rails. One end of the adjustment roller 93 is mounted on the adjustment block 92. One end of the counterweight rope 97 is connected to the counterweight slide 95, and the other end bypasses the idler wheel 96 to connect to the adjustment block 92. A plurality of counterweight blocks 950 are detachably mounted on the counterweight slide 95. The upper oil pressure buffer 98 and the lower oil pressure buffer 99 are mounted on the adjustment fixing plate 91 and are respectively clamped on the upper and lower sides of the adjustment block 92. The adjustment roller 93 is used for the transmission of film materials. A suitable counterweight block 950 is arranged on the counterweight slide 95 according to the tension required for transmission, so that the adjustment block 92 and the counterweight slide 95 are balanced. When the tension of the adjustment roller 93 changes during operation, the upper oil pressure buffer 98 and the lower oil pressure buffer 99 can play a buffering role.

[0033] The composite current collector double ultrasonic roller welding system of this solution has a compact structure, a length of only 2880 mm, a height of only 2122.5 mm, and a width of only 1680 mm. It is small in size and is particularly suitable for use by small and medium-sized enterprises.

[0034] The above is only a preferred embodiment of the present utility model, and it cannot be used to limit the scope of the implementation of the present utility model. That is, all simple equivalent changes and modifications made according to the scope of the patent application of the present utility model and the content of the utility model description are still within the scope of the present utility model patent.

Claims

1. A composite current collector double ultrasonic roller welding equipment, comprising a frame, characterized in that: The frame is equipped with a film unwinding mechanism, an A-side foil unwinding mechanism, a B-side foil unwinding mechanism, a front traction roller pressing mechanism, an ultrasonic double-roll welding mechanism and a winding mechanism. The A-side foil unwinding mechanism and the B-side foil unwinding mechanism are respectively placed on the upper and lower sides of the film unwinding mechanism. A material unwinding correction device is respectively arranged between the film unwinding mechanism, the A-side foil unwinding mechanism and the B-side foil unwinding mechanism and the front traction roller pressing mechanism. A deadweight buffer mechanism and a material winding correction mechanism are arranged between the ultrasonic double-roll welding mechanism and the winding mechanism.

2. The composite current collector double ultrasonic roller welding equipment according to claim 1, characterized in that: A rear traction rolling mechanism is also provided between the ultrasonic double-roll welding mechanism and the deadweight buffer mechanism.

3. The composite current collector double ultrasonic roller welding equipment according to claim 1, characterized in that: An ultrasonic dust removal device is also provided between the self-weight buffer mechanism and the material receiving and deviation correcting mechanism.

4. A composite current collector double ultrasonic roller welding equipment according to any one of claims 1 to 3, characterized in that: The frame is provided with a vertical support plate, and the film material unwinding mechanism, A-side foil material unwinding mechanism, B-side foil material unwinding mechanism, front traction roller pressing mechanism, ultrasonic double-roll welding mechanism and winding mechanism are all installed on the vertical support plate.

5. The composite current collector double ultrasonic roller welding equipment according to claim 4, characterized in that: The film material unwinding mechanism is arranged at the middle part of the front end of the vertical support plate, the A-side foil unwinding mechanism and the B-side foil unwinding mechanism are placed on the rear side of the film material unwinding mechanism and are symmetrically arranged on the upper and lower sides of the film material unwinding mechanism, the front traction roller pressing mechanism is placed on the rear side of the A-side foil unwinding mechanism and the B-side foil unwinding mechanism and is arranged flush with the film material unwinding mechanism, the ultrasonic double-roll welding mechanism is arranged above the rear side of the front traction roller pressing mechanism, and the winding mechanism is placed at the rear end bottom of the vertical support plate.

6. A composite current collector double ultrasonic roller welding equipment according to claim 1 or 5, characterized in that: The unwinding correction device includes an A-roll correction device, a B-roll correction device and a film material correction device. An A-roll correction device and a B-roll correction device are respectively arranged between the A-side foil unwinding mechanism and the B-side foil unwinding mechanism and the front traction roller pressing mechanism. A first tension sensor, a first tension detection roller and a film material correction device are sequentially arranged between the film material unwinding mechanism and the front traction roller pressing mechanism. A second tension detection roller and a second tension sensor are arranged between the front traction roller pressing mechanism and the ultrasonic double-roll welding mechanism.

7. The composite current collector double ultrasonic roller welding equipment according to claim 1, characterized in that: The film material unwinding mechanism includes a film material unwinding air shaft, a supporting vertical plate, a supporting slide and a supporting bottom plate, the supporting bottom plate is fixedly mounted on the frame, a supporting slide rail is provided on the surface of the supporting bottom plate, the supporting slide is slidably mounted on the supporting slide rail, the bottom end of the supporting vertical plate is fixedly connected to the supporting slide rail, the upper part of the supporting vertical plate is provided with a groove along the direction of the supporting slide rail, one end of the film material unwinding air shaft is connected to the frame, and the other end is placed in the groove, and an active block that blocks the other end of the film material unwinding air shaft is also installed on the supporting vertical plate, and the active block can prevent the other end of the film material unwinding air shaft from detaching from the groove.

8. The composite current collector double ultrasonic roller welding equipment according to claim 7, characterized in that: The A-side foil unwinding mechanism and the B-side foil unwinding mechanism both include a foil unwinding air shaft, one end of which is connected to the frame, and one end of the foil unwinding air shaft and the film material unwinding air shaft are both equipped with a magnetic powder clutch.

9. The composite current collector double ultrasonic roller welding equipment according to claim 2, characterized in that: The rear traction roller pressing mechanism includes a rear traction base and a rear traction motor installed on the rear traction base, a rear traction upper pressing roller, a first rear traction lower pressing roller, a second rear traction lower pressing roller, a welding and printing pressing wheel and two rear traction pressing cylinders, the first rear traction lower pressing roller is placed directly below the rear traction upper pressing roller, a rear traction smoothing gap for clamping and pressing film materials and foil materials is provided between the first rear traction lower pressing roller and the rear traction upper pressing roller, the second rear traction lower pressing roller is arranged horizontally with the first rear traction lower pressing roller and is placed on the rear side of the first rear traction lower pressing roller, and the rear traction motor drives the first rear traction lower pressing roller and the second rear traction lower pressing roller through a belt transmission mechanism The two ends of the rear traction upper pressure roller are respectively mounted on the rear traction base through a rear traction slide and can move up and down. The two rear traction clamping cylinders are respectively connected to the rear traction slide and can drive the rear traction upper pressure roller to move up and down. The welding pressure wheel is placed above the center between the first rear traction lower pressure roller and the second rear traction lower pressure roller. The welding pressure wheel is mounted on the traction base through a moving mechanism. The moving mechanism can adjust the upper and lower height positions between the welding pressure wheel and the first rear traction lower pressure roller and the second rear traction lower pressure roller, as well as adjust the horizontal position of the axis of the welding pressure wheel and the first rear traction lower pressure roller and the second rear traction lower pressure roller.

10. The composite current collector double ultrasonic roller welding equipment according to claim 1, characterized in that: The self-weight buffer mechanism includes an adjustment fixing plate, an adjustment block, an adjustment roller, a counterweight mounting plate, a counterweight slide, an idler wheel, a counterweight rope, an upper oil pressure buffer and a lower oil pressure buffer. The adjustment fixing plate and the counterweight mounting plate are respectively provided with vertical buffer guide rails. The adjustment block and the counterweight slide are respectively slidably mounted on the adjustment fixing plate and the counterweight mounting plate through the buffer guide rails. One end of the adjustment roller is mounted on the adjustment block. One end of the counterweight rope is connected to the counterweight slide, and the other end bypasses the idler wheel and is connected to the adjustment block. A number of counterweight blocks are detachably mounted on the counterweight slide. The upper oil pressure buffer and the lower oil pressure buffer are mounted on the adjustment fixing plate and respectively clamp the upper and lower sides of the adjustment block.

Images