A wide-width pole piece inspection machine

Abstract

The invention discloses a wide-width electrode piece detection machine, comprising a roll frame, a fuselage, a transmission device, a linear light source and a lens assembly; the roll frame is slidably connected with the fuselage; the roll frame comprises a frame body and a pair of roll shaft seats, and the roll shaft seats are slidably mounted on the frame body face to face; the transmission device comprises a receiving roller, an active roller and a driven roller; the receiving roller is used to receive the electrode piece of the roll; the active roller is linked with the first motor; the active roller and the driven roller are linked with each other through a synchronous belt; the linear light source is matched with the lens assembly; the lens assembly comprises a lens, a base, a fixed disk and a lens shaft seat, and the lens, the base, the fixed disk and the lens shaft seat are connected in sequence; the electrode piece passes through the first roll frame, the first receiving roller, the active roller, the driven roller, the second receiving roller and the second roll frame in sequence. The detection machine can be applied to the detection of electrode pieces of different sizes, and can effectively protect the electrode piece and reduce the adverse stress between the electrode piece and the detection machine during the detection process.

Description

Technical Field

[0001] The invention relates to the technical field of secondary battery electrode pole piece detection devices, and in particular to a wide-width pole piece detection machine. Background Art

[0002] At present, as secondary batteries represented by lithium batteries have been widely used, the safety of lithium-ion batteries has received more and more attention.

[0003] In the production process of secondary batteries, after the battery pole pieces are coated with slurry and dried, in order to prevent the battery pole pieces with defects such as white spots, foil leakage, scratches, wrinkles and foreign matter from flowing into the subsequent processes, the production quality and safety performance of the final prepared lithium-ion battery are guaranteed. In the past, the detection of pole piece surface defects usually adopts manual visual inspection, but manual visual inspection standards are subjective and prone to fatigue, which leads to the risk of missed detection.

[0004] For wide battery electrodes, due to their own certain gravity and their size, adverse stress is easily generated during the detection process, which can easily cause damage to the detection electrode itself. At the same time, due to their gravity, adverse stress also exists on the detection instrument, which can easily affect the life of the detection instrument. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a wide-width pole piece inspection machine that can effectively reduce the adverse stress between pole pieces of different widths and the inspection machine during the inspection process.

[0006] The purpose of the present invention is achieved by the following technical solutions:

[0007] A wide-width pole piece inspection machine comprises a roll frame, a machine body, a conveying device, a linear light source and a lens assembly;

[0008] The roller frame is slidably connected to the machine body; the roller frame comprises a frame body and a pair of roller shaft seats, and the roller shaft seats are slidably mounted on the frame body face to face;

[0009] The conveying device comprises a receiving roller, a driving roller and a driven roller; the receiving roller is used to receive the pole piece of the winding roller; the driving roller is linked with the first motor; the driving roller and the driven roller are linked with each other through a synchronous belt; the linear light source is matched with the lens assembly;

[0010] The lens assembly comprises a lens, a base, a fixed plate and a lens shaft seat, the lens is connected to the base, the base is sleeved with the fixed plate, and the fixed plate is axially connected with the lens shaft seat;

[0011] The electrode sheet passes through the first roller frame, the first receiving roller, the active roller, the driven roller, the second receiving roller and the second roller frame in sequence.

[0012] Furthermore, the roller shaft seat comprises a shaft seat body and a shaft connection column; the shaft connection column of one roller shaft seat is connected to the second motor, and the shaft connection column of the other roller shaft seat is connected to the first cylinder.

[0013] Furthermore, a first slide rail is provided on the frame, and the roller shaft seat is pushed by a screw rod to move back and forth along the first slide rail.

[0014] Furthermore, it also includes a correction component; the correction component includes a detector, a moving block, a second slide rail and a second cylinder; the detector is arranged on a receiving roller, and the fuselage and the frame are slidably connected via the second slide rail; one end of the moving block is connected to the push rod of the second cylinder, and the other end is fixedly connected to the frame.

[0015] Furthermore, the roller shell of the driven roller is driven by a roller shaft bearing.

[0016] Furthermore, the conveying device also includes a balancing piece, which is linked to the synchronous belt, and the balancing piece is provided with a vertical long hole, and the balancing piece is installed on the fuselage through a nail piece inserted into the vertical long hole.

[0017] Furthermore, the lens assembly also includes a positioning assembly, which includes a pair of relative or parallel positioning rods, and the positioning rods are used to push the base to rotate relative to the fixed plate, push the fixed plate to rotate relative to the lens axis seat, or push the fixed plate to move up and down relative to the lens axis seat.

[0018] Furthermore, the lens assembly also includes a damping assembly, which is used to damp the rotation of the base relative to the fixed plate, damp the rotation of the fixed plate relative to the lens axis seat, or damp the up and down displacement of the fixed plate relative to the lens axis seat.

[0019] Furthermore, the lens assembly also includes a protective cover, the protective cover is provided with a transparent plate matching the lens, the transparent plate is arranged in an inclined manner and is equipped with a blowing device.

[0020] Furthermore, the blowing device includes two air nozzles, a blowing slot arranged on the transparent plate, and a ventilation slot connecting the air nozzles and the blowing slots.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The wide-width pole piece inspection machine clamps pole piece reels of different widths through a winding roller frame, and has good adaptability. The sliding connection between the winding roller frame and the machine body has good control over the position of the pole piece in the machine body, thereby improving the quality of winding and unwinding. During the transmission of the pole piece, the active roller is linked by the first motor and then by the synchronous belt to the driven roller, thereby providing transmission power for the pole piece with its own weight and reducing the adverse stress in the transmission process. Through the cooperation of the lens assembly, surface defects can be detected more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the conveying device (excluding the receiving roller) of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the winding roller frame and the deviation correction component (excluding the detector) of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the winding roller frame and the deviation correction component of the present invention;

[0027] Figure 5 is a structural schematic diagram of a lens assembly;

[0028] Figure 6 It is a structural schematic diagram of the damping assembly, the shaft seat pivot, and the second damping plate;

[0029] Figure 7 A schematic diagram of the connection structure of the second shaft column, the second shaft seat and the second damping plate;

[0030] Figure 8 A schematic diagram of the cross-sectional structure of the protective cover.

[0031] In the figure, the reference numerals are as follows: 1, winding roller frame; 11, frame body; 111, first slide rail; 12, winding roller shaft seat; 121, shaft seat body; 122, shaft connection column; 13, second motor; 14, lead screw; 15, first cylinder; 2, fuselage; 3, conveying device; 31, receiving roller; 32, driving roller; 33, driven roller; 34, first motor; 35, synchronous belt; 36, balance member; 4, linear light source; 5, lens assembly; 51, lens; 52, base; 521, turntable; 522, push block; 53, fixed plate; 54, lens Axle seat; 541, first shaft column; 542, second shaft column; 543, first shaft seat; 544, second shaft seat; 5441, shaft seat frame; 5442, slider; 5443, cavity; 545, pivot seat; 55, rotating sleeve; 56, damping assembly; 561, first damping plate; 562, damping sleeve; 563, second damping plate; 6, protective cover; 61, cover body; 62, transparent plate; 63, blowing device; 631, air nozzle; 632, ventilation slot; 7, deviation correction assembly; 71, detector; 72, moving block; 73, second cylinder. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0033] A wide-width pole piece inspection machine, such as Figure 1 As shown, it includes a roll frame 1, a body 2, a transmission device 3, a linear light source 4 and a lens assembly 5;

[0034] like Figure 2-4 The reel frame 1 is slidably connected to the body 2; the reel frame 1 comprises a frame body 11 and a pair of reel shaft seats 12, and the reel shaft seats 12 are slidably mounted on the frame body 11 face to face;

[0035] The conveying device 3 includes a receiving roller 31, a driving roller 32 and a driven roller 33; the receiving roller 31 is used to receive the pole piece of the winding roller; the driving roller 32 is linked with the first motor 34; the driving roller 32 and the driven roller 33 are linked through a synchronous belt 35; the linear light source 4 cooperates with the lens assembly 5;

[0036] like Figure 5 As shown, the lens assembly 5 includes a lens 51, a base 52, a fixing plate 53 and a lens shaft seat 54, wherein the lens 51 is connected to the base 52, the base 52 is sleeved with the fixing plate 53, and the fixing plate 53 is axially connected with the lens shaft seat 54;

[0037] The electrode sheet passes through the first roller frame 1, the first receiving roller 31, the active roller 32, the driven roller 33, the second receiving roller 31 and the second roller frame 1 in sequence.

[0038] The configuration of the wide-width pole piece inspection machine is a roll frame 1 for unwinding, a machine body 2 and a roll frame 1 for winding. The conveying device 3, the linear light source 4 and the lens assembly 5 are installed in the machine body 2. Through the cooperation of a pair of roll shaft seats 12 slidably installed on the frame 11 face to face, it can adapt to a variety of wide pole pieces, and the roll frame 1 and the machine body 2 are slidably installed, and the pole piece can be placed in a suitable position of the machine body 2 by adjusting the relative sliding of the machine body 2 and the roll frame 1.

[0039] The wide-width pole piece conveying device 3 is particularly suitable for conveying wide-width pole pieces with a certain dead weight. In the conveying device 3, the receiving roller 31 is used to receive the pole piece released from the winding roller or to transfer the pole piece to the winding roller. The first motor 34 provides kinetic energy to the active roller 32 so that the pole piece has transmission power. It can effectively reduce the adverse stress between the pole piece and the fuselage and improve the transmission efficiency of the pole piece.

[0040] The lens assembly 5 cooperates with the linear light source 4 to detect the surface defects of the pole piece. Usually, two sets of lens assemblies 5 and linear light sources 4 are corresponding to one body to detect the front and back sides of the pole piece.

[0041] like Figure 2 As shown, the driven roller 33 is of a semi-powered type, that is, through the synchronizing action of the synchronous belt 35, part of the power transmitted by the motor to the active roller 32 is synchronized, and through the synchronizing and buffering action of the first ball roller bearing, on the one hand, it can provide transmission power for the driven roller 33, and on the other hand, it can effectively reduce the adverse stress of the driven roller 33 on the pole piece, so that the pole piece can be transmitted synchronously and losslessly between the active roller 32 and the driven roller 33.

[0042] The specific structure of the winding roller frame 1 in the present invention includes but is not limited to the following structures: the winding roller shaft seat 12 includes a shaft seat body 121 and a shaft connection column 122; the shaft connection column 122 of one winding roller shaft seat 12 is connected to the second motor 13, and the shaft connection column 122 of the other winding roller shaft seat 12 is connected to the first cylinder 15. That is, during use, one of the two winding roller shaft seats 12 is connected to the power source, and the first shaft seat 543 of the other winding roller shaft seat 12 can be fine-tuned by the first cylinder 15, so as to improve the clamping matching of the pole piece winding shaft.

[0043] In the roller frame 1, the connection method between the roller shaft seat 12 and the frame body 11 includes but is not limited to the following methods: a first slide rail 111 is provided on the frame body 11, and the roller shaft seat 12 is pushed to move back and forth along the first slide rail 111 by the screw rod 14, that is, the roller shaft seat 12 moves back and forth along the first slide rail 111 by the screw rod 14, so as to adjust the relative distance between the two roller shaft seats 12, thereby improving the clamping matching of the roller shaft seat 12 to the reel.

[0044] In order to further improve the quality of winding and unwinding, the wide-width pole piece inspection machine can also be improved in the following ways:

[0045] like Figure 2 and Figure 3 As shown, the device further includes a deviation correction component 7; the deviation correction component 7 includes a detector 71, a moving block 72, a second slide rail (not shown) and a second cylinder 73; the detector 71 is arranged on the receiving roller 31, and the machine body and the frame 11 are slidably connected through the second slide rail; one end of the moving block 72 is connected to the push rod of the second cylinder 73, and the other end is fixedly connected to the frame 11. That is, the correction component detects the position difference between the pole piece on the receiving roller 31 and the reel, thereby electrically connecting the second cylinder 73 to push the reel frame 1 to slide relative to the machine body, so as to align the reels of the pole piece on the receiving roller 31, so as to perform parallel reeling and unreeling.

[0046] In order to further reduce the adverse stress caused by the driven roller 33 on the pole piece, the conveying device 3 of the wide pole piece inspection machine can be improved as follows:

[0047] The roller shell of the driven roller 33 is driven by the roller shaft bearing, that is, the driven roller 33 is in a semi-driven state. It is synchronized with the active roller 32 through the synchronous belt 35, and the buffering effect of the bearing can effectively reduce the adverse stress of the roller shell of the driven roller 33 on the pole piece.

[0048] In order to improve the utilization rate of the kinetic energy provided by the active roller 32, the following improvement can be further performed, that is, the roller shell and the roller shaft of the active roller 32 are integrally formed.

[0049] like Figure 2 As shown, in order to improve the synchronization efficiency of the synchronous belt 35 and reduce the adverse stress between the synchronous belt 35 and the active roller 32 and the driven roller 33, the conveying device 3 also includes a balancing member 36, which is linked to the synchronous belt 35, and the balancing member 36 is provided with a vertical long hole. The balancing member 36 is installed on the fuselage by a nail member inserted through the vertical long hole.

[0050] like Figure 5-7 As shown, in order to enable the lens 51 to be fine-tuned, the wide-width pole piece inspection machine can be improved as follows:

[0051] The lens assembly 5 also includes a positioning assembly, which includes a pair of relative or parallel positioning rods, and the positioning rods are used to push the base 52 to rotate relative to the fixed plate 53, push the fixed plate 53 to rotate relative to the lens shaft seat 54, or push the fixed plate 53 to move up and down relative to the lens shaft seat 54.

[0052] In order to achieve the adjustment, the lens assembly 5 can be improved as follows: a rotating disk 521 matched with the fixed disk 53 is provided on the base 52, and the lens shaft seat 54 includes a first shaft column 541, a second shaft column 542, a first shaft seat 543, a second shaft seat 544 and a pivot seat 545; the fixed disk 53 is connected to the first shaft column 541 and the second shaft column 542 in radially opposite relation; the first shaft seat 543 is connected to the body through the pivot seat 545; the second shaft column 542 is connected to the body through the second shaft seat 544; the second shaft seat 544 includes a shaft seat frame 5441 and a slider 5442, and a cavity 5443 for displacement of the slider 5442 is provided in the shaft seat frame 5441;

[0053] The positioning component can be specifically implemented in the following manner:

[0054] 1) A first positioning assembly, which is composed of a push block 522 connected to the base 52 and a pair of first positioning members for pushing the push block 522 to move; specifically, the first positioning assembly is preferably arranged axially opposite to each other, that is, first positioning holes are arranged opposite to each other on the fixed plate 53, one end of the first positioning member is connected to the first positioning hole and the other end abuts against the push block 522;

[0055] The second positioning assembly is composed of a rotating sleeve 55 sleeved on the first shaft column 541 and a pair of second positioning members for driving the rotating sleeve 55 to rotate; the pair of second positioning assemblies are preferably arranged in parallel, the rotating sleeve 55 is provided with a pair of second positioning holes, the second positioning members are connected to the second positioning holes of the rotating sleeve 55 to abut against the first shaft seat 543, or the second positioning hole is provided on the second shaft seat 544, the second positioning member is connected to the second positioning hole to abut against the rotating sleeve 55;

[0056] The third positioning assembly is composed of a slider 5442 sleeved on the second shaft column 542 and a pair of third positioning parts for pushing the slider 5442 to move; the third positioning assembly can preferably be arranged vertically and axially relative to each other, that is, third positioning holes are provided at the upper and lower ends of the shaft seat body 121, one end of the third positioning part is connected to the third positioning hole and the other end respectively abuts against the top wall and bottom wall of the slider 5442.

[0057] On the basis of the above, in order to improve the positioning accuracy during the positioning process of the components, the following improvements can be further made:

[0058] The lens assembly 5 further includes a damping assembly 56 , which is used to damp the rotation of the base 52 relative to the fixed plate 53 , the rotation of the fixed plate 53 relative to the lens shaft seat 54 , or the vertical displacement of the fixed plate 53 relative to the lens shaft seat 54 .

[0059] 1) It includes a first damping sheet 561, which is connected to the fixed plate 53 and abuts against the rotating plate 521. That is, during the adjustment process, the friction between the first damping sheet 561 and the rotating plate 521 can improve the precision of the adjustment process in the horizontal plane, avoid over-adjustment, and effectively disperse the adverse stress during the adjustment process and after fixing, thereby improving the relative stability of the position between the fixed plate 53 and the rotating plate 521;

[0060] 2) It includes a damping sleeve 562, which is clamped between the second shaft column 542 and the slider 5442. The damping sleeve 562 also improves the precision of the adjustment process and avoids over-adjustment by increasing the rotational friction between the second shaft column 542 and the second shaft seat 544. It can also effectively disperse the adverse stress during the adjustment process and after fixing, and improve the relative stability of the position between the shaft column and the shaft seat;

[0061] On the basis of 2), both ends of the damping sleeve 562 are thinned to reduce the adverse stress of the slider 5442 on the second shaft column 542 during the upward and downward displacement of the adjusting device in the vertical direction;

[0062] 3) A second damping plate 563 is included, and the second damping plate 563 is connected to the shaft seat frame 5441 and abuts against the slider 5442. The friction between the second damping plate 563 and the slider 5442 improves the fineness of adjustment in the process of adjusting the upward and downward displacement of the slider 5442 by the third position adjustment member, avoids over-adjustment, and effectively disperses the adverse stress during the adjustment process and after fixing, thereby improving the relative stability of the position between the slider 5442 and the shaft seat frame 5441.

[0063] In order to further reduce the impact of machine dust on the lens 51, the wide-width pole piece inspection machine can adopt the following methods to protect the lens assembly 5:

[0064] like Figure 8 As shown, the lens assembly 5 further includes a protective cover 6, which includes a cover body 61 and a transparent plate 62 disposed on the cover body 61, wherein the transparent plate 62 is disposed in an inclined manner and is provided with a blowing device 63. That is, through the action of the blowing device 63, a protective airflow is formed on the transparent electrode covering the lens 51, thereby preventing dust from accumulating on the lens 51.

[0065] Specifically, the blowing device 63 includes two air nozzles 631, a blowing slot provided on the transparent plate 62, and a ventilation slot 632 connecting the air nozzles 631 and the blowing slots.

[0066] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A wide-width pole piece inspection machine, characterized in that: The invention comprises a roller frame, a fuselage, a transmission device, a linear light source and a lens assembly; the roller frame is slidably connected with the fuselage; the roller frame comprises a frame body and a pair of roller shaft seats, and the roller shaft seats are slidably mounted on the frame body face to face; the transmission device comprises a receiving roller, an active roller and a driven roller; the receiving roller is used to receive the pole piece of the roller; the active roller is linked with the first motor; the active roller and the driven roller are linked with each other through a synchronous belt, and the roller shell of the driven roller is driven by the roller shaft bearing; the transmission device also comprises a balancing piece, the balancing piece is linked with the synchronous belt, the balancing piece is provided with a vertical long hole, and the balancing piece is mounted on the fuselage through a nail piece inserted in the vertical long hole; the linear light source cooperates with the lens assembly; the lens assembly comprises a lens, a base, a fixed disk and a lens shaft seat, the lens is connected with the base, the base is sleeved with the fixed disk, and the fixed disk is axially connected with the lens shaft seat; the electrode piece passes through the first roller frame, the first receiving roller, the active roller, the driven roller, the second receiving roller and the second roller frame in sequence.

2. The wide-width pole piece inspection machine according to claim 1, characterized in that: The roller shaft seat comprises a shaft seat body and a shaft connection column; the shaft connection column of one roller shaft seat is connected to the second motor, and the shaft connection column of the other roller shaft seat is connected to the first cylinder.

3. The wide-width pole piece inspection machine according to claim 1, characterized in that: The frame is provided with a first slide rail, and the roller shaft seat is pushed by a screw rod to move back and forth along the first slide rail.

4. The wide-width pole piece inspection machine according to claim 1, characterized in that: It also includes a correction component; the correction component includes a detector, a moving block, a second slide rail and a second cylinder; the detector is arranged on a receiving roller, and the fuselage and the frame are slidably connected via the second slide rail; one end of the moving block is connected to the push rod of the second cylinder, and the other end is fixedly connected to the frame.

5. The wide-width pole piece inspection machine according to claim 1, characterized in that: The lens assembly also includes a positioning assembly, which includes a pair of relative or parallel positioning rods, and the positioning rods are used to push the base to rotate relative to the fixed plate, push the fixed plate to rotate relative to the lens axis seat, or push the fixed plate to move up and down relative to the lens axis seat.

6. The wide-width pole piece inspection machine according to claim 5, characterized in that: The lens assembly also includes a damping assembly, which is used to damp the rotation of the base relative to the fixed plate, damp the rotation of the fixed plate relative to the lens shaft seat, or damp the up and down displacement of the fixed plate relative to the lens shaft seat.

7. The wide-width pole piece inspection machine according to claim 1, characterized in that: The lens assembly also includes a protective cover, which is provided with a transparent plate matching the lens, and the transparent plate is arranged in an inclined manner and is equipped with a blowing device.

8. The wide-width pole piece inspection machine according to claim 7, characterized in that: The blowing device comprises two air nozzles, a blowing slot arranged on the transparent plate and a ventilation slot connecting the air nozzles and the blowing slots.

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