Automatic sampling device for lithium battery diaphragm inspection

Abstract

The utility model discloses an automatic sampling device for lithium battery diaphragm inspection, and belongs to the technical field of diaphragm sampling. Comprising a partition plate, an electromagnetic valve, a sliding seat and an angle adjuster installed on the sliding seat, the sliding seat comprises a positioning seat, a guide rod and a tool apron, the positioning seat is fixedly connected with the front end of the bottom of the partition plate, the guide rod is installed at the front end of the positioning seat, the tool apron is slidably connected with the guide rod, and the electromagnetic valve controls the tool apron to slide left and right on the guide rod; the automatic sampling device for lithium battery diaphragm inspection solves the problems that due to the special material performance of a lithium battery diaphragm, the cutting mode of the lithium battery diaphragm is slightly different from that of a common diaphragm, in an existing sampling device, due to the fact that the section, needing to be sampled, of the diaphragm is not fixed, the lithium battery diaphragm is wrinkled in the cutting process, and the sampling time is shortened. And uneven cutting edges or burrs of the lithium battery diaphragm are easily caused, so that the performance of the diaphragm sample is influenced, and the detection result is inaccurate.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of diaphragm sampling, in particular to an automatic sampling device for lithium battery diaphragm inspection. BACKGROUND

[0002] In the structure of a lithium battery, a diaphragm is one of the key inner components. For a lithium battery series, since the electrolyte is an organic solvent system, a diaphragm material resistant to organic solvents is required, and a high-strength thin polyolefin porous film is generally adopted. The GB / T36363-2018 "Polyolefin Diaphragm for Lithium Ion Battery" test standard requires that the lithium battery diaphragm has sufficient mechanical properties, including puncture strength, tensile strength and the like. The smaller the value is, the better the performance of the lithium battery is. The packaging of the sampled diaphragm should be intact. Three layers on the film roll are removed, and sampling is performed along the width of the diaphragm for appearance, size, physical property and electrical property tests. The diaphragm to be tested should be sealed and packaged to prevent moisture and pollution.

[0003] The lithium battery diaphragm is slightly different from the cutting mode of ordinary films due to its special material performance. In the existing sampling device, the diaphragm of the segment to be sampled is not fixed, so that the lithium battery diaphragm will wrinkle during cutting, and the cutting edge of the lithium battery diaphragm is not flat or burrs are generated, which affects the performance of the diaphragm sample and makes the detection result inaccurate.

[0004] Therefore, it is necessary to provide an automatic sampling device for lithium battery diaphragm inspection to solve the above problems. CONTENT OF THE INVENTION

[0005] Based on the above problems existing in the prior art, the purpose of the application is to provide an automatic sampling device for lithium battery diaphragm inspection to solve the problems raised in the background art.

[0006] The technical scheme adopted by the application to solve the technical problems is: an automatic sampling device for lithium battery diaphragm inspection, comprising a partition plate, an electromagnetic valve, a sliding seat and an angle adjuster mounted on the sliding seat, the sliding seat comprising a positioning seat, a guide rod and a tool holder, the positioning seat being fixedly connected with the bottom front end of the partition plate, the guide rod being mounted at the front end of the positioning seat, the tool holder being in sliding connection with the guide rod, and the electromagnetic valve being used to control the left and right sliding of the tool holder on the guide rod.

[0007] The angle adjuster comprises a fixed adjusting disc, a movable adjusting disc and a bolt, the fixed adjusting disc and the movable adjusting disc are of the same structure shape, the connection part of the fixed adjusting disc and the movable adjusting disc is a sawtooth shape, the fixed adjusting disc is fixedly connected with the front end of the tool holder, the bolt is connected with the centers of the fixed adjusting disc and the movable adjusting disc, a blade with a right cutting edge is arranged on the movable adjusting disc in a penetrating mode, and the bottom end of the blade is connected with the bolt for convenient dismounting.

[0008] The front end of the partition plate is provided with a through slot, and the blade is located in the through slot and the highest point of the blade cannot be lower than the top surface of the through slot.

[0009] Further, the outer peripheral wall of the connecting part of the fixed adjusting disc and the movable adjusting disc is provided with a scale line.

[0010] Further, it also comprises a base and a frame, the partition plate is arranged between the base and the frame, the electromagnetic valve is fixedly connected with the inner wall of the bottom of the base, the front end of the base is threadedly connected with an inclined plate, and a placing groove is arranged at the center position of the inclined plate.

[0011] Further, a roller is rotatably connected between the upper part of the rear end of the frame, the sample membrane to be sampled is installed on the roller, a guide roller is rotatably connected between the lower part of the front end of the frame, and a flattening mechanism is arranged on the upper part of the front end of the frame and located in front of the guide roller.

[0012] Further, the flattening mechanism comprises a cylinder, a counterweight, a sliding block, a sliding rail, a pressing plate and a top plate, the top plate is fixedly connected with the top of the front end of the frame, the sliding rail is arranged on the inner surface of the two sides of the front end of the frame and located below the top plate, the telescopic end of the cylinder is arranged at the center position of the top plate, the telescopic end of the cylinder is fixedly connected with the counterweight, two sliding blocks are fixedly connected with the two sides of the counterweight, the sliding blocks are fixedly connected with the sliding rail, the pressing plate is fixedly connected between the bottoms of the two sliding blocks, the pressing plate is provided with a pressing groove and a positioning groove, the pressing groove is communicated with the positioning groove, and the size of the pressing groove is consistent with that of the through slot.

[0013] Further, the right side of the through slot is fixedly connected with a protection block, and the protection block can be embedded into the positioning groove when the positioning groove is pressed.

[0014] Further, a scale is arranged in the placing groove, an adjusting plate is threadedly connected with the outer surface of the inclined plate, a pressing block is arranged at the top end of the adjusting plate, and the pressing block is slidingly connected with the inclined plate.

[0015] The automatic sampling device for lithium battery membrane provided by the application can change the cutting angle of the blade through the angle adjuster, can adapt to membranes with different stretching degrees for cutting and sampling, can determine whether the blade is clamped or blunt through the scale on the angle adjuster, can prevent the cutting of the membrane from being uneven, can prevent the lithium battery membrane from being wrinkled during cutting, can prevent the cutting edge of the lithium battery membrane from being uneven or generating burrs, and can solve the technical problem that the performance of the membrane sample is affected and the detection result is inaccurate due to the difference between the cutting mode of the lithium battery membrane and that of the ordinary membrane due to the special material performance of the lithium battery membrane.

[0016] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be described in further detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of the present application use to provide further understanding of the present application, the illustrative embodiments of the present application and the description thereof serve the purpose of explaining the present application, and do not constitute an undue limitation on the present application. In the drawings:

[0018] Figure 1 is a schematic view of the present application as a whole;

[0019] Figure 2 is another side schematic view of the present application;

[0020] Figure 3 is a schematic view of the rack of the present application;

[0021] Figure 4 is a schematic view of the slide of the present application;

[0022] Figure 5 is a schematic view of the A area in Figure 4 of the present application;

[0023] Figure 6 is a schematic view of the back of the pressing plate of the present application;

[0024] In the drawings, various reference signs refer to:

[0025] 1, machine base; 2, rack; 3, partition; 31, through slot; 4, diaphragm; 5, flattening mechanism; 51, air cylinder; 52, counterweight; 53, sliding block; 54, sliding rail; 55, pressing plate; 551, pressing groove; 552, positioning groove; 56, top plate; 6, inclined plate; 61, placing groove; 7, scale; 8, adjusting plate; 9, pressing block; 10, protection block; 11, roller; 12, guide roller; 13, electromagnetic valve; 14, slide; 141, positioning seat; 142, guide rod; 143, knife seat; 15, angle adjuster; 151, fixed adjusting disc; 152, movable adjusting disc; 153, bolt; 16, blade. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in further detail below with reference to the drawings and in combination with the embodiments.

[0027] In order to make the person skilled in the art better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0028] As shown in Figures 1-6 The present application provides a technical scheme: an automatic sampling device for lithium battery diaphragm inspection, including a partition plate 3, a solenoid valve 13, a sliding seat 14, and an angle adjuster 15 installed on the sliding seat 14, the sliding seat 14 includes a positioning seat 141, a guide rod 142, and a knife seat 143, the positioning seat 141 is fixedly connected with the bottom front end of the partition plate 3, the guide rod 142 is installed at the front end of the positioning seat 141, the knife seat 143 is slidably connected with the guide rod 142, and the solenoid valve 13 controls the left and right sliding of the knife seat 143 on the guide rod 142.

[0029] The angle adjuster 15 includes a fixed adjusting disc 151, a movable adjusting disc 152, and a bolt 153, the fixed adjusting disc 151 and the movable adjusting disc 152 have the same structure shape, the connection part of the fixed adjusting disc 151 and the movable adjusting disc 152 is a sawtooth shape, the fixed adjusting disc 151 is fixedly connected with the front end of the knife seat 143, the bolt 153 is connected with the center of the fixed adjusting disc 151 and the movable adjusting disc 152, and a blade 16 with a right knife edge is provided on the movable adjusting disc 152, and the bottom end of the blade 16 is connected with the bolt 153 for easy disassembly.

[0030] A through groove 31 is formed in the front end of the partition plate 3, and the blade 16 is located in the through groove 31, and the highest point of the blade 16 is not lower than the top surface of the through groove 31.

[0031] The blade 16 is placed on the movable adjusting disc 152, the movable adjusting disc 152 is rotated, the slitting angle of the knife edge of the blade 16 is adjusted, the bolt 153 is tightened, the movable adjusting disc 152, the fixed adjusting disc 151, and the blade 16 are fixed, at this time, the solenoid valve 13 is started, the knife seat 143 is controlled to move to the right, at this time, the knife seat 143 drives the angle adjuster 15 to move from left to right, and the blade 16 moves along the moving direction of the knife seat 143.

[0032] A scale line is arranged on the outer peripheral wall of the connection part of the fixed adjusting disc 151 and the movable adjusting disc 152.

[0033] During the cutting process of the blade 16 reciprocating, the corresponding condition of the scale lines on the fixed adjusting disc 151 and the movable adjusting disc 152 is observed, if the scale lines of the fixed adjusting disc 151 and the movable adjusting disc 152 are deflected, it indicates that the movable adjusting disc 152 is deflected, the bolt 153 needs to be tightened, the angle of the blade 16 can be prevented from being deflected in time, and the dullness of the blade 16 cannot be excluded.

[0034] The device further comprises a base 1 and a rack 2, a partition plate 3 is arranged between the base 1 and the rack 2, the electromagnetic valve 13 is fixedly connected with the inner wall of the bottom of the base 1, and the front end of the base 1 is threadedly connected with an inclined inclined plate 6, and a placement groove 61 is arranged at the center position of the inclined plate 6.

[0035] The roller 11 is rotatably connected between the upper portion of the rear end of the rack 2, the diaphragm 4 to be sampled is arranged on the roller 11, the guide roller 12 is rotatably connected between the lower portion of the front end of the rack 2, and the flattening mechanism 5 is arranged on the upper portion of the front end of the rack 2 and located in front of the guide roller 12.

[0036] The flattening mechanism 5 comprises a cylinder 51, a counterweight 52, a sliding block 53, a sliding rail 54, a pressing plate 55 and a top plate 56, the top plate 56 is fixedly connected with the top of the front end of the rack 2, the sliding rail 54 is arranged on the inner surface of the two sides of the front end of the rack 2 and located below the top plate 56, the telescopic end of the cylinder 51 is arranged at the center position of the top plate 56, the telescopic end of the cylinder 51 is fixedly connected with the counterweight 52, the two sides of the counterweight 52 are fixedly connected with two sliding blocks 53, the sliding blocks 53 are fixedly connected with the sliding rail 54, the bottom of the two sliding blocks 53 is fixedly connected with the pressing plate 55, the pressing plate 55 is provided with a pressing groove 551 and a positioning groove 552, the pressing groove 551 is communicated with the positioning groove 552, and the size of the pressing groove 551 is consistent with that of the through groove 31.

[0037] The protection block 10 is fixedly connected with the right side of the through groove 31, and the protection block 10 can be embedded into the positioning groove 552 when the positioning groove 552 is pressed.

[0038] The placement groove 61 is provided with a scale 7, the outer surface of the inclined plate 6 is threadedly connected with an adjusting plate 8, the top end of the adjusting plate 8 is provided with a pressing block 9, and the pressing block 9 is slidably connected with the inclined plate 6.

[0039] In one embodiment, how the device completes automatic sampling.

[0040] Specifically, the diaphragm 4 is arranged on the roller 11, passes through the bottom of the guide roller 12, passes above the through groove 31 and is pulled to the outer surface of the inclined plate 6, the adjusting plate 8 is adjusted to the length range required to be cut along the scale of the scale 7, the adjusting plate 8 is fixed on the inclined plate 6 by threads, when the wide side of the diaphragm 4 is flush with the upper edge of the adjusting plate 8, the pressing block 9 is arranged above the adjusting plate 8 and presses the diaphragm 4 on the inclined plate 6.

[0041] Put the blade 16 on the movable adjusting disc 152, turn the movable adjusting disc 152, adjust the slitting angle of the blade 16, and tighten the bolt 153. After that, the movable adjusting disc 152, the fixed adjusting disc 151 and the blade 16 are fixed.

[0042] Start the air cylinder 51, and the air cylinder 51 pushes the counterweight 52 to move downward. The counterweight 52 slides downward along the slide rail 54 under the action of the slide block 53. When the air cylinder 51 is pushed to the maximum stroke, the pressing plate 55 has pressed the diaphragm 4 on the top surface of the baffle 3, and the pressing groove 551 coincides with the through groove 31.

[0043] Start the electromagnetic valve 13, control the knife holder 143 to move right, and at this time, the knife holder 143 drives the angle adjuster 15 to move from left to right. The blade 16 moves along the moving direction of the knife holder 143, the blade 16 slides in the through groove 31, and the blade tip of the blade 16 slides in the pressing groove 551. The diaphragm 4 between the pressing groove 551 and the through groove 31 is cut.

[0044] After the cutting is completed, the knife holder 143 is controlled to move left through the electromagnetic valve 13, and the blade tip falls into the bottom of the protection block 10. Then, the pressing plate 55 is lifted upward through the air cylinder 51, the pressing block 9 is removed, and the sample diaphragm 4 is taken out.

[0045] In summary, the device changes the cutting angle of the blade by setting the angle adjuster, can adapt to different stretching degrees of the diaphragm for cutting and sampling, and can determine whether the blade is clamped or blunt through the scale on the angle adjuster, so as to cause the cutting of the diaphragm to be uneven. The technical problem that the existing sampling device does not fix the diaphragm for sampling, the lithium battery diaphragm is wrinkled during cutting, the cutting edge of the lithium battery diaphragm is uneven or burrs are generated, the performance of the diaphragm sample is affected, and the detection result is inaccurate is solved.

[0046] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic sampling device for lithium battery separator inspection, comprising a partition plate (3), a solenoid valve (13), a sliding seat (14) and an angle adjuster (15) installed on the sliding seat (14), characterized in that: The sliding seat (14) comprises a positioning seat (141), a guide rod (142) and a cutter seat (143), the positioning seat (141) is fixedly connected with the bottom front end of the partition plate (3), the guide rod (142) is installed at the front end of the positioning seat (141), the cutter seat (143) is slidably connected with the guide rod (142), and the electromagnetic valve (13) controls the cutter seat (143) to slide left and right on the guide rod (142). The angle adjuster (15) comprises a fixed adjusting disc (151), a movable adjusting disc (152) and a bolt (153), the fixed adjusting disc (151) and the movable adjusting disc (152) are of the same structure and shape, the connecting part of the fixed adjusting disc (151) and the movable adjusting disc (152) is a sawtooth shape, the fixed adjusting disc (151) is fixedly connected with the front end of the cutter seat (143), the bolt (153) is connected with the centers of the fixed adjusting disc (151) and the movable adjusting disc (152), the movable adjusting disc (152) is provided with a blade (16) with a right cutting edge penetrating therethrough, and the bottom end of the blade (16) is connected with the bolt (153) for convenient dismounting. The front end of the partition plate (3) is provided with a through groove (31), the blade (16) is located in the through groove (31), and the highest point of the blade (16) is not lower than the top surface of the through groove (31).

2. The automatic sampling device for lithium battery separator inspection according to claim 1, characterized in that: The outer circumferential wall of the connecting part of the fixed adjusting disc (151) and the movable adjusting disc (152) is provided with a scale line.

3. The automatic sampling device for lithium battery separator inspection according to claim 2, characterized in that: The machine base (1) and the machine frame (2) are further provided, the partition plate (3) is arranged between the machine base (1) and the machine frame (2), the electromagnetic valve (13) is fixedly connected with the inner wall of the bottom of the machine base (1), the inclined baffle (6) is threadedly connected with the front end of the machine base (1), and the placing groove (61) is arranged at the center position of the inclined baffle (6).

4. The automatic sampling device for lithium battery separator inspection according to claim 3, characterized in that: The roller (11) is rotatably connected between the upper part of the rear end of the machine frame (2), the diaphragm (4) to be sampled is installed on the roller (11), the guide roller (12) is rotatably connected between the lower part of the front end of the machine frame (2), and the flattening mechanism (5) is arranged at the upper part of the front end of the machine frame (2). The roller (11) is rotatably connected between the upper part of the rear end of the machine frame (2), the diaphragm (4) to be sampled is installed on the roller (11), the guide roller (12) is rotatably connected between the lower part of the front end of the machine frame (2), and the flattening mechanism (5) is arranged at the upper part of the front end of the machine frame (2).

5. The automatic sampling device for lithium battery separator inspection according to claim 4, characterized in that: The flattening mechanism (5) comprises a cylinder (51), a counterweight (52), a sliding block (53), a slide rail (54), a pressing plate (55) and a top plate (56), the top plate (56) is fixedly connected with the front end top of the rack (2), the slide rail (54) is arranged on the inner surface of the both sides of the front end of the rack (2) and below the top plate (56), the telescopic end of the cylinder (51) is arranged in the center of the top plate (56), the telescopic end of the cylinder (51) is fixedly connected with the counterweight (52), the both sides of the counterweight (52) are fixedly connected with two sliding blocks (53), the sliding blocks (53) are fixedly connected with the slide rail (54), the bottom of the two sliding blocks (53) is fixedly connected with the pressing plate (55), the pressing plate (55) is provided with a pressing groove (551) and a positioning groove (552), the pressing groove (551) is communicated with the positioning groove (552), and the size of the pressing groove (551) is consistent with that of the through groove (31).

6. The automatic sampling device for lithium battery separator inspection according to claim 5, characterized in that: The right side of the through groove (31) is fixedly connected with a protection block (10), and the protection block (10) can be embedded into the positioning groove (552) when the positioning groove (552) is pressed.

7. The automatic sampling device for lithium battery separator inspection according to claim 3, characterized in that: The placing groove (61) is provided with a scale (7), the outer surface of the inclined plate (6) is threadedly connected with an adjusting plate (8), the top end of the adjusting plate (8) is provided with a pressing block (9), and the pressing block (9) is slidably connected with the inclined plate (6).

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