Adjustable tab flattening device

Abstract

The invention relates to an adjustable pole lug smoothing device which comprises a fixed seat and guide rollers rotationally arranged on the upper side and the lower side of the fixed seat and used for conveying pole pieces, a driving assembly and a pretreatment assembly driven by the driving assembly are arranged on the input side of the guide roller on the upper side, and the pretreatment assembly comprises an air suction plate and an air blowing plate. A maintaining assembly is arranged on the output side of the guide roller, an adjusting assembly is arranged on a guide roller shaft on the lower side and comprises an adjusting support, a leveling plate used for leveling a pole lug on a pole piece is arranged on the adjusting support, and the pretreatment assembly is used for driving the assembly to drive an air suction plate and an air blowing plate to synchronously track the pole lug and meanwhile conduct pretreatment. And the adjusting assembly is used for adjusting the distance between the flattening plate and the guide roller, and the keeping assembly is used for keeping a flattening state when the tabs are output, so that the flattening effect of the tabs is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage battery devices, and more specifically to an adjustable tab flattening device. Background Art

[0002] During the production process of wound-section batteries, the positive and negative electrode plates will pass through various rollers such as deviation correction, buffering, and tension control from the unwinding reel to the winding part. Especially in the production of multi-tab battery cores during the battery production process, when passing through the rollers, it is very easy for the tabs to be scratched, resulting in phenomena such as tab folding, tearing, and tape breakage. The product defect rate is high, and in severe cases, it can cause a decrease in battery performance or short circuit, affecting the battery performance and safety.

[0003] Chinese Patent with the publication number CN110957499A discloses a tab flattening and guiding mechanism, a driving roller unit, and a square power battery core winding machine. The tab flattening and guiding mechanism includes a fixed seat, a guiding roller, and a guiding piece. The fixed seat is provided with mounting holes. The guiding roller is rotatably mounted on the fixed seat around its own axis. The axial direction of the guiding roller is parallel to the axial direction of the mounting holes. The guiding piece is mounted on the fixed seat. The extension line of the guiding end of the guiding piece is located between the mounting holes and the guiding roller. The guiding end of the guiding piece is close to and faces the guiding roller.

[0004] However, the inventor of the present invention found that during the actual application process, the tabs will fold when being rigidly flattened by the flattening plate and the guiding roller, resulting in wrinkles on the tabs. The flattening effect is single and the flattening efficiency is low. Therefore, in combination with the comparative document, we propose an adjustable tab flattening device to improve the phenomena of tab folding and tearing of the device through preliminary flexible flattening. Summary of the Invention

[0005] The purpose of the present invention is to provide an adjustable tab flattening device for the deficiencies of the prior art. The preprocessing component is used to perform preprocessing when the electrode plate is input. The distance between the flattening plate and the guiding plate is adjusted through the adjusting component to adapt to different electrode plates. The holding component is used to keep the electrode plate in a flattened state all the time when the electrode plate is output, improving the tab flattening effect.

[0006] The technical solutions of the present invention are as follows:

[0007] An adjustable tab flattening device includes a fixed seat, and guide rollers rotatably arranged on the upper and lower sides of the fixed seat for transporting the pole pieces. A driving assembly and a pretreatment assembly driven by the driving assembly are arranged on the input side of the upper guide roller. The pretreatment assembly includes a suction plate and a blowing plate. A holding assembly is arranged on the output side of the guide roller. An adjusting assembly is arranged on the shaft of the lower guide roller. The adjusting assembly includes an adjusting bracket, and a flattening plate for flattening the tabs on the pole piece is arranged on the adjusting bracket. The pretreatment assembly is used for the driving assembly to drive the suction plate and the blowing plate to perform synchronous tracking with the tabs while performing pretreatment. The adjusting assembly is used to adjust the distance between the flattening plate and the guide roller. The holding assembly is used to keep the flattened state when the tabs are output.

[0008] As a preference, the driving assembly includes a support plate fixedly arranged on the fixed seat, a motor fixedly arranged on the support plate, and a lead screw rotatably arranged on the support plate. The lead screw is fixedly connected to the output shaft of the motor.

[0009] As a preference, the pretreatment assembly further includes a connecting rod fixedly connected between the suction plate and the blowing plate, a fixed rod fixedly arranged on the connecting rod, a nut slidably arranged on the lead screw, a suction cavity and a blowing cavity fixedly arranged in the suction plate, a suction hole obliquely opened on the suction cavity, a first blowing hole obliquely opened on the blowing cavity, a second blowing hole obliquely opened on the blowing plate, and a connecting pipe fixedly connected between the blowing cavity and the blowing plate. The fixed rod is fixedly connected to the nut, and the nut is slidably arranged on the support plate through a slider.

[0010] As a preference, the adjusting assembly further includes a left clamp and a right clamp arranged on the shaft of the guide roller, an empty groove opened on the left clamp, a fixing hole opened on the empty groove, and a sliding groove opened on the adjusting bracket. The adjusting bracket is matched with the empty groove, and the sliding groove is matched with the fixing hole.

[0011] As a preference, the holding assembly includes a holding plate fixedly arranged on the fixed seat, and a third blowing hole opened on the holding plate.

[0012] As a preference, guide plates are arranged on the flattening plate, the suction plate, the blowing plate and the holding plate.

[0013] As a preference, a scale is arranged on the adjusting bracket.

[0014] As a preference, the distance between the suction plate and the blowing plate is greater than the thickness of the tab and the lower surface of the suction plate is attached to the tab.

[0015] The beneficial effects of the present invention are

[0016] 1. The present invention is provided with a driving component and a preprocessing component. While the suction plate, the blowing plate and the tab move synchronously, the drooping tab is flattened and lifted, and the tab is gently flattened, so that the tab is fully unfolded, preparing for the subsequent rigid flattening by the flattening plate and the guiding roller, preventing wrinkles from occurring. At the same time, while blowing air through the first air blowing holes to the connection area between the tab and the tabbed plate, the tab will not be deformed, so that a flattening memory is formed, reducing the situation of the tab drooping.

[0017] 2. The present invention is also provided with an adjusting component and a holding component. The distance between the flattening plate and the guiding roller is adjusted through a scale to adapt to different tabbed plates. When the tab is flattened and output, the tab is kept in a flattened state through the holding plate, improving the use effect of the tabbed plate.

[0018] In summary, the present invention has the advantages of good flattening effect and high efficiency, and is suitable for the technical field of energy storage battery equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Figure 1 It is a schematic structural diagram of an adjustable tab flattening device;

[0021] Figure 2 It is a schematic structural diagram of the driving component;

[0022] Figure 3 It is a schematic structural diagram of the preprocessing component;

[0023] Figure 4 It is a schematic structural diagram of the adjusting component;

[0024] Figure 5 It is a schematic structural diagram of the fixing hole;

[0025] Figure 6 It is a schematic structural diagram of the suction cavity and the blowing cavity;

[0026] Figure 7 It is a schematic diagram of the state when the tab is flattened by the blowing plate and the suction plate;

[0027] Figure 8 It is a schematic diagram of the state when the tabbed plate is transmitted and output and passes through the holding plate;

[0028] Figure 9 For Figure 8 The enlarged view at A in

[0029] Reference numerals: 1 fixing base, 2 pole piece, 3 guiding roller, 4 driving assembly, 41 support plate, 42 motor, 43 lead screw, 5 pretreatment assembly, 51 suction plate, 52 blowing plate, 53 connecting rod, 54 fixing rod, 55 nut, 56 suction chamber, 57 blowing chamber, 58 suction hole, 59 first blowing hole, 510 second blowing hole, 511 connecting pipe, 6 holding assembly, 61 holding plate, 62 third blowing hole, 7 adjusting assembly, 71 adjusting bracket, 72 left hoop, 73 right hoop, 74 empty slot, 75 fixing hole, 76 sliding slot, 8 tab, 9 flattening plate, 10 guiding plate, 11 scale. Detailed implementation manners

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0031] Embodiment 1

[0032] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0033] As Figures 1 to 9 shown, an adjustable tab flattening device includes a fixing base 1, guiding rollers 3 rotatably arranged on the upper and lower sides of the fixing base 1 for transporting the pole piece 2. A driving assembly 4 is arranged on the input side of the upper guiding roller 3, and a pretreatment assembly 5 driven by the driving assembly 4. The pretreatment assembly 5 includes a suction plate 51 and a blowing plate 52. A holding assembly 6 is arranged on the output side of the guiding roller 3. An adjusting assembly 7 is arranged on the shaft of the lower guiding roller 3. The adjusting assembly 7 includes an adjusting bracket 71. A flattening plate 9 for flattening the tab 8 on the pole piece 2 is arranged on the adjusting bracket 71. The pretreatment assembly 5 is used for the driving assembly 4 to drive the suction plate 51 and the blowing plate 52 to perform synchronous tracking with the tab 8 while performing pretreatment. The adjusting assembly 7 is used for adjusting the distance between the flattening plate 9 and the guiding roller 3. The holding assembly 6 is used for keeping the flattened state when the tab 8 is output.

[0034] It is worth mentioning that, as Figure 2 shown, the driving assembly 4 includes a support plate 41 fixedly arranged on the fixing base 1, a motor 42 fixedly arranged on the support plate 41, and a lead screw 43 rotatably arranged on the support plate 41. The lead screw 43 is fixedly connected to the output shaft of the motor 42. Among them, the motor 42 is a forward and reverse motor, driving the lead screw 43 to rotate forward and backward, driving the suction plate 51 and the blowing plate 52 to perform reciprocating sliding, performing synchronous tracking with the tab 8, and achieving a high-efficiency pretreatment effect.

[0035] In addition, as Figure 3 and Figure 7As shown, the pretreatment component 5 further includes a connecting rod 53 fixedly connected between the suction plate 51 and the blowing plate 52, a fixed rod 54 fixedly arranged on the connecting rod 53, a nut 55 slidably arranged on the lead screw 43, a suction chamber 56 and a blowing chamber 57 fixedly arranged in the suction plate 51, a suction hole 58 obliquely opened on the suction chamber 56, a first blowing hole 59 obliquely opened on the blowing chamber 57, a second blowing hole 510 obliquely opened on the blowing plate 52, and a connecting pipe 511 fixedly connected between the blowing chamber 57 and the blowing plate 52. The fixed rod 54 is fixedly connected with the nut 55, and the nut 55 is slidably arranged on the support plate 41 through a slider. Among them, a negative pressure device is connected to the suction plate 51 to enable the suction plate 51 to suck air, and an air pump is connected to the blowing plate 52 to enable the blowing plate 52 to blow air. In addition, when the tab 8 sags due to gravity, the sagging point mostly occurs at the connection with the electrode plate 2. Therefore, it has a better effect of smoothing the connection area. During use, the electrode plate 2 is input on the input side of the guide roller 3. When the tab 8 passes through the suction plate 51 and the blowing plate 52, the negative pressure device and the air pump are turned on simultaneously, so that a negative pressure is generated in the suction chamber 56 on the suction plate 51, and the suction hole 58 adsorbs the tab 8. The blowing plate 52 blows air on the lower surface of the tab 8 through the second blowing hole 510 to initially flexibly smooth the tab, so that the tab 8 is fully unfolded. During this process, the suction plate 51 and the blowing plate 52 slide on the lead screw 43 through the nut 55 to achieve the effect of synchronously moving with the electrode plate 2. The suction plate 51, the blowing plate 52 and the tab 8 are in a relatively static state to prevent the tab 8 from being worn. When the blowing plate 52 blows air, the gas reaches the blowing chamber 57 through the connecting pipe 511 and blows air on the connection area between the tab 8 and the electrode plate 2 through the first blowing hole 59. At this time, the suction hole 58 and the second blowing hole 510 flatten and lift the sagging tab 8, and the tab 8 is always in a smoothed state. Blowing air on the connection area will not deform the tab, but only blows air on the sagging point of the connection area to form a smoothing memory and reduce the situation of the tab 8 sagging; before the tab 8 passes through the guide roller 3 on the input side, the suction plate 51 and the blowing plate 52 cancel blowing and suction, disconnect from the tab 8, and at the same time the motor 42 drives the lead screw 43 to reverse, so that the suction plate 51 and the blowing plate 52 are reset to prepare for the pretreatment of the next tab 8. By blowing and suction to flexibly smooth the sagging tab 8, it is possible to prevent the tab 8 from being folded and wrinkled during rigid smoothing, so that the tab is fully unfolded in the early stage, and then the tab 8 can be rigidly smoothed by the flattening plate 9 and the guide roller 3, greatly improving the smoothing effect.

[0036] It should be emphasized that as Figure 4 and Figure 5As shown, the adjusting component 7 further includes a left clamp 72 and a right clamp 73 arranged on the shaft of the guiding roller 3, an empty slot 74 opened on the left clamp 72, a fixing hole 75 opened on the empty slot 74, and a sliding slot 76 opened on the adjusting bracket 71. The adjusting bracket 71 cooperates with the empty slot 74, and the sliding slot 76 cooperates with the fixing hole 75. During use, the adjusting bracket 71 adjusts the distance between the flattening plate 9 and the guiding roller 3 through the sliding slot 76 and the fixing hole 75. After adjusting the distance, it is fixed by screwing bolts into the sliding slot 76 and the fixing hole 75 to adapt to different pole pieces 2. When the pole ear 8 is transmitted, when passing through the lower guiding roller 3, it will be flattened multiple times, greatly improving the flattening effect.

[0037] It should be further noted that, as Figure 8 and Figure 9 shown, the holding component 6 includes a holding plate 61 fixedly arranged on the fixed seat 1 and a third air blowing hole 62 opened on the holding plate 61. Among them, an air pump is connected to the upper side of the holding plate 61 to make the third air blowing hole 62 blow air, and the blowing direction of the third air blowing hole 62 is towards the transmission direction of the pole piece 2. While preventing the pole ear 8 from sagging by blowing air, it does not interfere with the transmission of the pole piece 2. During use, when the pole ear 8 is output on the output side, when the pole ear 8 is in a flattened state, it maintains a certain distance from the holding plate 61 itself. In order to prevent the pole ear 8 from sagging when output, the third air blowing hole 62 blows air on the lower surface of the pole ear 8, so that the pole ear 8 always maintains a flattened state and does not come into contact with the holding plate 61. The pole ear 8 floats above the holding plate 61 to prevent wear. By blowing air in the direction towards the transmission direction and not in contact, the flattened pole ear 8 will not be deformed, and at the same time, when blowing air, it does not interfere with the pole piece 2 still being transmitted.

[0038] It is worth mentioning that, as Figure 3 shown, guiding plates 10 are arranged on the flattening plate 9, the suction plate 51, the blowing plate 52 and the holding plate 61. The guiding plates 10 flatten and lift the sagging pole ear 8, making the pole ear 8 present a straight state and preventing it from being folded. During use, when the pole ear 8 is input on the input side, flattened, and output on the output side, the guiding plates 10 lift and flatten the pole ear 8.

[0039] Furthermore, as Figure 4 shown, a scale 11 is arranged on the adjusting bracket 71. By means of the scale 11, it is convenient to control the distance, realize precise adjustment for different pole piece incoming states and different parts passing through the roller, and improve the compatibility of the production equipment.

[0040] In addition, as Figure 7As shown, the distance between the air suction plate 51 and the air blowing plate 52 is greater than the thickness of the tab 8, and the lower surface of the air suction plate 51 is in contact with the tab 8. During use, when the tab 8 passes through the air suction plate 51 and the air blowing plate 52, the air suction plate 51 adsorbs the tab 8 by suction, and in cooperation with the air blowing mode of the air blowing plate 52 on the tab 8, the tab 8 is preliminarily processed, improving the later flattening effect.

[0041] Working process

[0042] The pole piece 2 is input on the input side of the guiding roller 3. When the tab 8 passes through the air suction plate 51 and the air blowing plate 52, the negative pressure device and the air pump are simultaneously turned on, causing a negative pressure to be generated in the air suction cavity 56 on the air suction plate 51, and the air suction holes 58 adsorb the tab 8. The air blowing plate 52 blows air on the lower surface of the tab 8 through the second air blowing holes 510, enabling the tab 8 to be preliminarily processed. During this process, the air suction plate 51 and the air blowing plate 52 slide on the lead screw 43 through the nuts 55, achieving the effect of synchronously moving with the pole piece 2. The air suction plate 51, the air blowing plate 52, and the tab 8 are in a relatively static state, preventing the tab 8 from being worn. At this time, the air suction holes 58 and the second air blowing holes 510 flatten and lift the drooping tab 8, and the tab 8 is in a flattened state. When the air blowing plate 52 blows air, the gas simultaneously reaches the air blowing cavity 57 through the connecting pipe 511 and blows air on the connection area between the tab 8 and the pole piece 2 through the first air blowing holes 59, reducing the situation of the tab 8 drooping; when the tab 8 passes through the guiding roller 3 close to the upper input side, the air suction plate 51 and the air blowing plate 52 cancel air suction and blowing, disconnecting from the tab 8. At the same time, the motor 42 drives the lead screw 43 to reverse, causing the air suction plate 51 and the air blowing plate 52 to reset, preparing for preprocessing the next tab 8. The adjusting bracket 71 adjusts the distance between the flattening plate 9 and the guiding roller 3 through the sliding groove 76 and the fixing holes 75. After adjusting the distance, it is fixed by screwing bolts into the sliding groove 76 and the fixing holes 75 to adapt to different pole pieces 2. When the tab 8 is transmitted and passes through the lower guiding roller 3, it will be flattened multiple times, greatly improving the flattening effect. When the tab 8 is output after being flattened at the side output side, during output, through the holding plate 61, the third air blowing holes 62 generate suction on the upper surface of the tab 8, causing the tab 8 to always maintain a flattened state. At this time, the tab 8 is suspended between the holding plates 61 by the adsorption force, preventing wear.

[0043] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "front and back", "left and right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the invention.

[0044] Of course, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "one" should not be construed as a limitation on the quantity.

[0045] The foregoing, in conjunction with the accompanying drawings, describes only the preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. It should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the structure of the present invention, and these should also be regarded as the protection scope of the present invention, without affecting the implementation effect and practicability of the present invention.

Claims

1. An adjustable tab flattening device, comprising a fixed seat (1) and guide rollers (3) rotatably arranged on the upper and lower sides of the fixed seat (1) for transporting a tab (2), characterized in that: On the input side of the upper guide roller (3), a driving assembly (4) and a pretreatment assembly (5) driven by the driving assembly (4) are provided. The pretreatment assembly (5) includes a suction plate (51) and a blowing plate (52). On the output side of the guide roller (3), a holding assembly (6) is provided. On the shaft of the lower guide roller (3), an adjusting assembly (7) is provided. The adjusting assembly (7) includes an adjusting bracket (71). On the adjusting bracket (71), a flattening plate (9) is provided for flattening the tab (8) on the pole piece (2). The pretreatment assembly (5) is used for the driving assembly (4) to drive the suction plate (51) and the blowing plate (52) to perform synchronous tracking with the tab (8) while performing pretreatment. The adjusting assembly (7) is used to adjust the distance between the flattening plate (9) and the guide roller (3). The holding assembly (6) is used to keep the tab (8) in a flattened state when it is output.

2. The adjustable tab flattening device according to claim 1, characterized in that: The driving assembly (4) includes a support plate (41) fixedly arranged on the fixed seat (1), a motor (42) fixedly arranged on the support plate (41), and a lead screw (43) rotatably arranged on the support plate (41). The lead screw (43) is fixedly connected to the output shaft of the motor (42).

3. The adjustable tab flattening device according to claim 2, characterized in that: The pretreatment assembly (5) further includes a connecting rod (53) fixedly connected between the suction plate (51) and the blowing plate (52), a fixed rod (54) fixedly arranged on the connecting rod (53), a nut (55) slidably arranged on the lead screw (43), a suction cavity (56) and a blowing cavity (57) fixedly arranged in the suction plate (51), a suction hole (58) obliquely opened on the suction cavity (56), a first blowing hole (59) obliquely opened on the blowing cavity (57), a second blowing hole (510) obliquely opened on the blowing plate (52), and a connecting pipe (511) fixedly connected between the blowing cavity (57) and the blowing plate (52). The fixed rod (54) is fixedly connected to the nut (55). The nut (55) is slidably arranged on the support plate (41) through a slider.

4. An adjustable tab flattening device according to claim 1, characterized in that: The adjusting assembly (7) further includes a left clamp (72) and a right clamp (73) arranged on the shaft of the guide roller (3), an empty groove (74) opened on the left clamp (72), a fixing hole (75) opened on the empty groove (74), and a sliding groove (76) opened on the adjusting bracket (71). The adjusting bracket (71) is matched with the empty groove (74). The sliding groove (76) is matched with the fixing hole (75).

5. An adjustable tab flattening device according to claim 1, characterized in that: The holding assembly (6) includes a holding plate (61) fixedly arranged on the fixed seat (1), and a third blowing hole (62) obliquely opened on the holding plate (61).

6. An adjustable tab flattening device according to claim 5, characterized in that: Guide plates (10) are arranged on the flattening plate (9), the suction plate (51), the blowing plate (52) and the holding plate (61).

7. An adjustable tab flattening device according to claim 1, characterized in that: A scale (11) is arranged on the adjusting bracket (71).

8. The adjustable tab flattening device according to claim 1, wherein: The distance between the suction plate (51) and the blowing plate (52) is greater than the thickness of the tab (8), and the lower surface of the suction plate (51) is attached to the tab (8).

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