Automatic thickness measuring machine for battery diaphragm

Abstract

The utility model belongs to the technical field of detection equipment, and particularly relates to an automatic thickness measuring machine for a battery diaphragm, which comprises a detection device provided with a workbench, an upper pressing plate, a lower pressing plate, a detection connecting plate, a force sensor and a displacement sensor, the lower pressing plate is positioned on the workbench, the upper pressing plate is positioned above the lower pressing plate, and the upper end of the force sensor is connected with the detection connecting plate; the lower end of the force sensor is connected with the upper pressing plate, the displacement sensor is arranged on the workbench, the detection end of the displacement sensor faces a detected part located on the upper pressing plate, and the detection connecting plate can ascend and descend to drive the power sensor and the upper pressing plate to ascend and descend. The diaphragm feeding device and the diaphragm discharging device are located on the left side and the right side of the detection device respectively and each provided with a vacuum suction cup assembly capable of moving left and right. According to the utility model, the thickness detection of the continuous battery diaphragm can be realized, and the accuracy and stability of the test are ensured through the configuration of the force sensor and the displacement sensor.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection equipment, and in particular relates to an automatic thickness measuring machine for battery diaphragms. Background Art

[0002] As a key component within lithium-ion batteries, the thickness of the battery separator directly impacts battery performance and safety. Excessively thick separators increase the battery's internal resistance and reduce energy density, while excessively thin separators may not effectively isolate the positive and negative electrodes, increasing the risk of short circuits. Therefore, precise control of separator thickness is a key factor in ensuring battery performance and safety.

[0003] To achieve this goal, accurate measurement of separator thickness is crucial. Mechanical contact film thickness gauges are widely used to measure the thickness of lithium battery separators. However, existing film thickness gauges often produce inaccurate measurements for easily deformed separators and are unable to meet the requirements for continuous, large-scale testing of separators. Utility Model Content

[0004] The utility model aims to solve the above technical problems and provide an automatic thickness measuring machine for battery diaphragms.

[0005] A battery diaphragm automatic thickness measuring machine, comprising:

[0006] The detection device comprises a workbench, an upper pressing plate, a lower pressing plate, a detection connecting plate, a force sensor and a displacement sensor, wherein the lower pressing plate is located on the workbench, the upper pressing plate is located above the lower pressing plate, the upper end of the force sensor is connected to the detection connecting plate, the lower end of the force sensor is connected to the upper pressing plate, the displacement sensor is arranged on the workbench, the detection end of the displacement sensor faces the measured part located on the upper pressing plate, and the detection connecting plate can be raised and lowered to drive the force sensor and the upper pressing plate to be raised and lowered;

[0007] The diaphragm loading device and the diaphragm unloading device are respectively located on the left and right sides of the detection device, and both have vacuum suction cup components that can move left and right.

[0008] Optionally, the detection device further comprises a detection drive mechanism for driving the detection connecting plate to rise and fall, and the detection drive mechanism comprises:

[0009] The detection drive electric cylinder has an axial direction of the telescopic rod in the up-down direction and is connected to the detection connecting plate, and the detection drive electric cylinder drives the detection connecting plate to move up and down.

[0010] Optionally, the detection drive electric cylinder is connected to the workbench directly or through a fixing plate.

[0011] Optionally, the detection drive mechanism further includes:

[0012] an upper connecting plate, located above the detection connecting plate;

[0013] Detect the drive motor, the axial direction of the motor shaft is the up and down direction;

[0014] Two detection drive screw rods are arranged side by side in the front-to-back direction, with the axial direction being the up-down direction, the lower ends of which are connected to the motor shaft of the detection drive motor through transmission assemblies, and the upper ends of which are mounted on the upper connecting plate through bearings;

[0015] Two detection drive nuts are respectively rotatably connected to a corresponding one of the detection drive screw rods. The two detection drive nuts are respectively fixed to the detection connecting plate. The rotation of the detection drive motor drives the two detection drive screw rods to rotate, thereby driving the two detection drive nuts to rise and fall, and finally driving the detection connecting plate to rise and fall;

[0016] The top end of the detection driving electric cylinder is connected to the upper connecting plate.

[0017] Optionally, the detection drive mechanism further includes:

[0018] a lower connecting plate, located between the upper connecting plate and the detection connecting plate, through which the detection drive screw rod passes, connected to the bottom end of the detection drive electric cylinder and passed through by the telescopic rod of the detection drive electric cylinder, and with detection sliders respectively provided on the front and rear sides of the lower connecting plate;

[0019] The two detection guide rails are arranged side by side along the front-to-back direction, with the length direction being the up-down direction. The two detection guide rails are respectively slidably connected to the detection slider on the same side.

[0020] Optionally, there are four force sensors, which are respectively arranged around the detection connecting plate and the upper pressing plate.

[0021] Optionally, the displacement sensor adopts a digital dial indicator, the digital dial indicator is located on the side of the upper pressing plate, and the detection rod of the digital dial indicator is axially in the up-down direction and faces upward;

[0022] The measured part extends out from the side of the upper pressing plate and is located above the detection rod of the digital display micrometer.

[0023] Optionally, the detection device further includes a linear displacement sensor, a fixed portion of the linear displacement sensor is fixed to the workbench, and a sliding portion of the linear displacement sensor is fixed to the upper pressing plate.

[0024] Optionally, the battery diaphragm automatic thickness measuring machine further includes:

[0025] A main truss is arranged across the diaphragm loading device and the diaphragm unloading device, and has a loading and unloading rack on the top, and the length direction of the loading and unloading rack is the left-right direction;

[0026] The diaphragm loading device and the diaphragm unloading device both have an loading and unloading servo motor, an loading and unloading gear and an loading and unloading connecting plate. The loading and unloading gear is fixed on the motor shaft of the loading and unloading servo motor, and the loading and unloading gear is meshed and connected with the loading and unloading rack. The loading and unloading servo motor is fixed on the loading and unloading connecting plate. The vacuum suction cup assembly is also fixed on the loading and unloading connecting plate. The loading and unloading servo motor rotates, driving the loading and unloading gear to rotate, and then driving the loading and unloading gear to make left and right linear motion on the loading and unloading rack, and finally driving the vacuum suction cup assembly to make left and right linear motion.

[0027] Optionally, the front and rear sides of the main truss are further provided with loading and unloading linear guide rails, and the length direction of the loading and unloading linear guide rails is the left and right direction;

[0028] A plurality of loading and unloading sliding blocks are respectively provided on the front and rear sides of the loading and unloading connecting plate, and the loading and unloading sliding blocks on the front and rear sides are respectively slidably connected to the loading and unloading linear guide rails on the same side.

[0029] Optionally, the diaphragm feeding device further includes a diaphragm lifting mechanism, the diaphragm lifting mechanism is located below the vacuum suction cup assembly of the diaphragm feeding device, and the diaphragm lifting mechanism includes:

[0030] The loading mounting plate has a lifting groove with an open structure on one side, and a loading frame is provided around the lifting groove;

[0031] a diaphragm tray rack, located in the loading frame and movable up and down in the loading frame, with two sides of the diaphragm tray rack abutting against the loading mounting plate around the lifting groove;

[0032] The lifting plate can move up and down. One side of the lifting plate is located below the lifting groove and the diaphragm tray rack. The diaphragm tray rack is lifted and lowered by the lifting plate.

[0033] Optionally, the loading mounting plate is provided with a plurality of lifting slots and a plurality of loading frames, and the diaphragm tray racks are provided with a plurality of diaphragm tray racks, each of which is located in a corresponding one of the loading frames;

[0034] The loading installation plate can be moved forward and backward or left and right, and one of the diaphragm tray racks is moved to the upper side of the lifting plate by the forward and backward or left and right movement of the loading installation plate.

[0035] Optionally, the diaphragm feeding device further includes a material changing drive mechanism, and the material changing drive mechanism includes:

[0036] The material changing mounting plate is provided with a material changing rack, wherein the length direction of the material changing rack is the front-back direction or the left-right direction;

[0037] A material changing servo motor is fixed on the feeding mounting plate;

[0038] The material changing gear is fixed on the motor shaft of the material changing servo motor and is meshed with the material changing rack. The material changing servo motor rotates, driving the material changing gear to rotate, and then driving the material changing gear to make forward and backward or left and right linear motion on the material changing rack, and finally driving the loading mounting plate to make forward and backward or left and right linear motion.

[0039] Optionally, the diaphragm feeding device further includes a lifting drive mechanism for driving the lifting plate to move up and down, and the lifting drive mechanism includes:

[0040] Lift the fixed plate;

[0041] a lifting connecting plate, located above the lifting plate and connected to the lifting fixing plate via a plurality of guide rods, wherein the guide rods pass through the lifting plate;

[0042] A lifting drive motor is fixed on the lifting fixed plate, and the axial direction of the motor shaft is vertical;

[0043] A lifting drive screw, the axial direction of which is in the up-down direction, the lower end of which is connected to the motor shaft of the lifting drive motor through a transmission assembly, and the upper end of which is mounted on the lifting connection plate through a bearing;

[0044] The lifting drive nut is rotatably connected to the lifting drive screw, and the lifting drive nut is fixed to the lifting plate. The lifting drive motor rotates to drive the lifting drive screw, thereby driving the lifting drive nut to rise and fall, and finally driving the lifting plate to rise and fall.

[0045] Optionally, the vacuum suction cup assembly of the diaphragm blanking device can move up and down and left and right.

[0046] Optionally, the diaphragm blanking device further includes a plurality of sorting frames, and the plurality of sorting frames are arranged side by side in the left-right direction.

[0047] Beneficial effects: The utility model can realize continuous battery separator thickness detection, and can also detect various other non-battery flexible sheet products. The accuracy and stability of the test are guaranteed by the configuration of force sensors and displacement sensors. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A structural diagram of the utility model;

[0049] Figure 2This is a structural diagram of the detection device of the utility model;

[0050] Figure 3 for Figure 2 Schematic diagram of part of the structure;

[0051] Figure 4 for Figure 3 Schematic diagram from another angle;

[0052] Figure 5 This is a connection diagram between the diaphragm feeding device and the main truss of the utility model;

[0053] Figure 6 This is a partial structural diagram of the diaphragm feeding device of the utility model;

[0054] Figure 7 for Figure 6 Schematic diagram from another angle. DETAILED DESCRIPTION

[0055] The following will be combined with the accompanying drawings to describe the preferred embodiments of the present invention in detail so that the purpose, features and advantages of the present invention can be more clearly understood. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0056] In the following description, for the purpose of illustrating the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other cases, well-known devices, structures, and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0057] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0058] In the following description, in order to clearly demonstrate the structure and working mode of the present invention, many directional words will be used for description, but words such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and should not be understood as restrictive terms.

[0059] Reference Figure 1The utility model provides a battery diaphragm automatic thickness gauge, which includes a diaphragm feeding device 10, a detection device 20, and a diaphragm unloading device 30 from left to right.

[0060] The diaphragm loading device 10 and the diaphragm unloading device 30 both have a vacuum suction cup assembly 40 that can move left and right.

[0061] Reference Figures 2 to 4 The detection device 20 includes a workbench 21, an upper pressing plate 22, a lower pressing plate 23, a detection connecting plate 24, a force sensor 25 and a displacement sensor 26.

[0062] The lower pressure plate 23 is installed on the workbench 21 and is fixed. The upper pressure plate 22 is located above the lower pressure plate 23. The upper end of the force sensor 25 is connected to the detection connecting plate 24. The lower end of the force sensor 25 is connected to the upper pressure plate 22. The displacement sensor 26 is arranged on the workbench 21. The detection end of the displacement sensor 26 faces the measured part located on the upper pressure plate 22. The detection connecting plate 24 can be raised and lowered, and the force sensor 25 and the upper pressure plate 22 can be raised and lowered.

[0063] When the present invention is used, after the vacuum suction cup assembly 40 of the diaphragm feeding device 10 absorbs the battery diaphragm, it moves horizontally to the right to the test area of ​​the detection device 20, that is, between the upper pressure plate 22 and the lower pressure plate 23. The vacuum is released, so that the battery diaphragm falls and is placed on the upper pressure plate 22. The vacuum suction cup assembly 40 moves horizontally to the left to leave the test area. The detection connecting plate 24 of the detection device 20 moves downward, driving the upper pressure plate 22 to move downward and press down. The force sensor 2 tests the downward pressure and stops pressing after reaching the set pressure. After the displacement sensor 26 detects the thickness data of the battery diaphragm in real time, the detection device 20 is reset. If the thickness is within the preset range, it is judged to be qualified, otherwise it is judged to be unqualified. The vacuum suction cup assembly 40 of the diaphragm feeding device 30 moves to the left and absorbs the battery diaphragm that has been tested, and then moves to the right to take the battery diaphragm away from the detection device 20, completing one test.

[0064] In one embodiment, referring to Figures 2 to 4 The detection device 20 also has a detection drive mechanism for driving the detection connecting plate 24 to rise and fall. The detection drive mechanism includes a detection drive electric cylinder 271. The axial direction of the telescopic rod of the detection drive electric cylinder 271 is in the up and down direction and is connected to the detection connecting plate 24. The detection drive electric cylinder 271 drives the detection connecting plate 24 to rise and fall.

[0065] In one embodiment, the detection driving electric cylinder 271 is connected to the workbench 21 directly or through a fixing plate.

[0066] In one embodiment, in order to avoid failure to detect the battery diaphragm due to damage to the detection drive electric cylinder 271, another set of detection drive mechanisms is further provided in this embodiment.

[0067] Specifically, refer to Figures 3 and 4 The detection drive mechanism also includes an upper connecting plate 272, a detection drive motor 273, two detection drive screw rods 274, and two detection drive nuts.

[0068] The upper connecting plate 272 is located above the detection connecting plate 24. The top end of the detection drive electric cylinder 271 is connected to the upper connecting plate 272. The axial direction of the motor shaft of the detection drive motor 273 is the up-down direction. The two detection drive screw rods 274 are arranged side by side along the front-to-back direction, and the axial direction of the detection drive screw rods 274 is the up-down direction. The lower ends of the two detection drive screw rods 274 are respectively connected to the motor shaft of the detection drive motor 273 through the transmission assembly, and the upper ends of the two detection drive screw rods 274 are respectively installed on the upper connecting plate 272 through bearings. The two detection drive nuts are respectively rotatably connected to the corresponding detection drive screw rods 274, and the two detection drive nuts are respectively fixed to the front and rear sides of the detection connecting plate 24. The rotation of the detection drive motor 273 drives the two detection drive screw rods 274 to rotate, thereby driving the two detection drive nuts to rise and fall, and finally driving the detection connecting plate 24 to rise and fall.

[0069] In one embodiment, the detection drive mechanism further includes a lower connecting plate 275 , a plurality of detection sliders 276 , and two detection guide rails 277 .

[0070] The lower connecting plate 275 is located between the upper connecting plate 272 and the detection connecting plate 24. The detection drive screw 274 passes through the lower connecting plate 275. The lower connecting plate 275 is connected to the bottom end of the detection drive electric cylinder 271 and is passed through the telescopic rod of the detection drive electric cylinder 271. Detection sliders 276 are respectively provided on the front and rear sides of the lower connecting plate 275. Two detection guide rails 277 are arranged side by side on the workbench 21 in the front-to-back direction. The length direction of these detection guide rails 277 is the vertical direction. The two detection guide rails 277 are respectively slidably connected to the detection sliders 276 on the same side.

[0071] In one embodiment, there are four force sensors 25 , which are respectively disposed around the detection connecting plate 24 and the upper pressing plate 22 .

[0072] In one embodiment, referring to Figure 3 The displacement sensor 26 is a digital dial indicator located on the side of the upper platen 22. The detection rod 261 of the digital dial indicator is axially oriented in the vertical direction and faces upward. The measured portion 262 extends from the side of the upper platen 22 and is located above the detection rod 261 of the digital dial indicator.

[0073] In one embodiment, referring to Figure 4The detection device 20 further includes a linear displacement sensor 28 , a fixed portion of the linear displacement sensor 28 is fixed on the workbench 21 , and a sliding portion of the linear displacement sensor 28 is fixed on the upper pressing plate 22 .

[0074] Specifically, two linear displacement sensors 28 may be provided, and the two linear displacement sensors 28 are respectively located at the front and rear sides of the upper pressing plate 22 .

[0075] In one embodiment, referring to Figure 1 and Figure 5 The battery diaphragm automatic thickness gauge also includes a main truss 50, which is arranged across the diaphragm loading device 10 and the diaphragm unloading device 30. The top of the main truss 50 is provided with a loading and unloading rack 51, and the length direction of the loading and unloading rack 51 is the left and right direction.

[0076] The diaphragm loading device 10 and the diaphragm unloading device 30 both have an loading and unloading servo motor 52, an loading and unloading gear and an loading and unloading connecting plate 53. The loading and unloading gear is fixed on the motor shaft of the loading and unloading servo motor 52. The loading and unloading gear is meshed and connected with the loading and unloading rack 51. The loading and unloading servo motor 52 is fixed on the loading and unloading connecting plate 53. A vacuum suction cup assembly 40 is also fixed on the loading and unloading connecting plate 53. The loading and unloading servo motor 52 rotates, driving the loading and unloading gear to rotate, and then driving the loading and unloading gear to make left and right linear motion on the loading and unloading rack 51, and finally driving the vacuum suction cup assembly 40 to make left and right linear motion.

[0077] Since the present invention requires continuous large-scale testing of products, this embodiment uses a truss structure to strengthen the main operating structure to ensure the stability and reliability of the equipment during actual use.

[0078] In one embodiment, referring to Figure 5 The main truss 50 is further provided with loading and unloading linear guides 54 on both the front and rear sides, with the length direction of the loading and unloading linear guides 54 being the left and right direction. The loading and unloading connecting plate 53 is provided with a plurality of loading and unloading sliders on both the front and rear sides, and the loading and unloading sliders on the front and rear sides are respectively slidably connected to the loading and unloading linear guides 54 on the same side.

[0079] In one embodiment, referring to Figure 1 、 Figure 6 and Figure 7 The diaphragm loading device 10 also includes a diaphragm lifting mechanism 60, which is located below the vacuum suction cup assembly 40 of the diaphragm loading device 10. The diaphragm lifting mechanism 60 includes a loading mounting plate 61, a diaphragm tray rack 62, and a lifting plate 63.

[0080] The loading mounting plate 61 has a lifting groove with an open structure on the left side, and the periphery of the lifting groove is surrounded by a loading frame 611. The loading frame 611 can have a plurality of loading guide rods arranged around the lifting groove to form.

[0081] The diaphragm tray rack 62 is located in the loading frame 611 and can move up and down in the loading frame 611. The front and rear sides of the diaphragm tray rack 62 abut against the loading mounting plates 61 on the front and rear sides of the lifting groove.

[0082] The lifting plate 63 can move up and down. The right side of the lifting plate 63 is located below the lifting groove and the diaphragm tray rack 62. The lifting groove serves as an avoidance groove. The lifting and lowering of the lifting plate 63 drives the diaphragm tray rack 62 to move up and down.

[0083] During use, a plurality of battery diaphragms are stacked on the diaphragm tray. When loading is required, the lifting plate 63 is driven to rise so that the topmost battery diaphragm on the diaphragm tray is at a height that can be adsorbed by the vacuum suction cup assembly 40, so that the vacuum suction cup assembly 40 can adsorb and send it to the test area.

[0084] In one embodiment, the loading mounting plate 61 has a plurality of lifting slots and a plurality of loading frames 611 , and there are a plurality of diaphragm tray racks 62 , each of which is located in a corresponding loading frame 611 .

[0085] Reference Figure 6 and Figure 7 The loading mounting plate 61 has two lifting slots and two loading frames 611 arranged along the front-to-back direction, and the two diaphragm tray racks 62 are respectively located in a corresponding loading frame 611.

[0086] The loading installation plate 61 can move forward and backward, and the forward and backward movement of the loading installation plate 61 moves one of the diaphragm tray racks 62 to one side above the lifting plate 63.

[0087] With the above design, the product inspection capacity of the continuous large-scale inspection product of the utility model is greatly increased.

[0088] In one embodiment, referring to Figure 1 、 Figure 6 and Figure 7 The diaphragm feeding device 10 further includes a material changing drive mechanism 70 , which includes a material changing mounting plate 71 , a material changing servo motor 72 , a material changing gear, and a material changing rack 73 .

[0089] The reloading mounting plate 71 is equipped with a reloading rack 73, whose length runs in the front-to-back direction. A reloading servo motor 72 is fixed to the loading mounting plate 61. A reloading gear is fixed to the motor shaft of the reloading servo motor 72. The reloading gear meshes with the reloading rack 73. Rotation of the reloading servo motor 72 drives the reloading gear, which in turn drives the reloading gear to move linearly back and forth on the reloading rack 73, ultimately driving the loading mounting plate 61 to move linearly back and forth.

[0090] In one embodiment, referring to Figure 1 、 Figure 6 and Figure 7 The diaphragm loading device 10 also includes a lifting drive mechanism 80 that drives the lifting plate 63 to rise and fall. The lifting drive mechanism 80 adopts a screw drive mechanism. Specifically, the lifting drive mechanism 80 includes a lifting fixed plate 81, a lifting connecting plate 82, a lifting drive motor 83, a lifting drive screw 84, and a lifting drive nut.

[0091] The lifting connecting plate 82 is located above the lifting plate 63. The lifting connecting plate 82 is connected to the lifting fixed plate 81 via a plurality of guide rods 85, and the guide rods 85 pass through the lifting plate 63. The lifting drive motor 83 is fixed to the lifting fixed plate 81, and the axial direction of the motor shaft of the lifting drive motor 83 is vertical. The axial direction of the lifting drive screw 84 is in the up-down direction. The lower end of the lifting drive screw 84 is connected to the motor shaft of the lifting drive motor 83 via a transmission assembly, and the upper end of the lifting drive screw 84 is mounted on the lifting connecting plate 82 via a bearing. The lifting drive nut is rotatably connected to the lifting drive screw 84. The lifting drive nut is fixed to the lifting plate 63. The rotation of the lifting drive motor 83 drives the lifting drive screw 84 to rotate, thereby driving the lifting drive nut to rise and fall, and ultimately driving the lifting plate 63 to rise and fall.

[0092] In one embodiment, the vacuum suction cup assembly 40 of the diaphragm blanking device 30 can move up and down and left and right.

[0093] The driving mechanism for driving the vacuum suction cup assembly 40 of the diaphragm blanking device 30 to move up and down can adopt existing technology, such as the screw driving mechanism of the present invention or adopt existing cylinders for driving.

[0094] In one embodiment, referring to Figure 1 The diaphragm blanking device 30 further includes a plurality of sorting frames 31, and the plurality of sorting frames 31 are arranged side by side along the left-right direction.

[0095] The qualified products and unqualified products can be sorted and placed separately through the sorting frame 31.

[0096] In one embodiment, the vacuum suction cup assembly 40 includes a plurality of vacuum suction cups, and the number of the vacuum suction cups can be set according to the size specifications of the battery separator.

[0097] For example, three vacuum suction cups are arranged along the front-to-back direction to form the vacuum suction cup assembly 40 .

[0098] While the preferred embodiments of the present invention have been described in detail above, it should be understood that after reading the above teachings of the present invention, those skilled in the art may make various changes or modifications to the present invention. Such equivalent forms also fall within the scope of the claims appended hereto.

Claims

1. A battery diaphragm automatic thickness measuring machine, characterized in that: include: The detection device comprises a workbench, an upper pressing plate, a lower pressing plate, a detection connecting plate, a force sensor and a displacement sensor, wherein the lower pressing plate is located on the workbench, the upper pressing plate is located above the lower pressing plate, the upper end of the force sensor is connected to the detection connecting plate, the lower end of the force sensor is connected to the upper pressing plate, the displacement sensor is arranged on the workbench, the detection end of the displacement sensor faces the measured part located on the upper pressing plate, and the detection connecting plate can be raised and lowered to drive the force sensor and the upper pressing plate to be raised and lowered; The diaphragm loading device and the diaphragm unloading device are respectively located on the left and right sides of the detection device, and both have vacuum suction cup components that can move left and right.

2. The automatic thickness measuring machine for battery diaphragms according to claim 1, characterized in that: The detection device further comprises a detection drive mechanism for driving the detection connecting plate to move up and down, the detection drive mechanism comprising: a detection drive electric cylinder, a telescopic rod having an axial direction in the up-down direction and connected to the detection connecting plate, the detection drive electric cylinder driving the detection connecting plate to move up and down; And / or, there are four force sensors, and the four force sensors are respectively arranged around the detection connecting plate and the upper pressing plate; And / or, the displacement sensor adopts a digital dial indicator, the digital dial indicator is located on the side of the upper pressing plate, the detection rod of the digital dial indicator is axially oriented in the up-down direction and faces upward; the measured part extends out of the side of the upper pressing plate and is located above the detection rod of the digital dial indicator; And / or, the detection device further comprises a linear displacement sensor, wherein a fixed portion of the linear displacement sensor is fixed on the workbench, and a sliding portion of the linear displacement sensor is fixed on the upper pressing plate; And / or, the vacuum suction cup assembly of the diaphragm blanking device can move up and down and left and right; And / or, the diaphragm blanking device further includes a plurality of sorting frames, and the plurality of sorting frames are arranged side by side along the left-right direction.

3. The automatic thickness measuring machine for battery separators according to claim 2, characterized in that: The detection drive electric cylinder is connected to the workbench directly or through a fixing plate; or, The detection drive mechanism also includes: an upper connecting plate, located above the detection connecting plate; Detect the drive motor, the axial direction of the motor shaft is the up and down direction; Two detection drive screw rods are arranged side by side in the front-to-back direction, with the axial direction being the up-down direction, the lower ends of which are connected to the motor shaft of the detection drive motor through transmission assemblies, and the upper ends of which are mounted on the upper connecting plate through bearings; Two detection drive nuts are respectively rotatably connected to a corresponding one of the detection drive screw rods. The two detection drive nuts are respectively fixed to the detection connecting plate. The rotation of the detection drive motor drives the two detection drive screw rods to rotate, thereby driving the two detection drive nuts to rise and fall, and finally driving the detection connecting plate to rise and fall; The top end of the detection driving electric cylinder is connected to the upper connecting plate.

4. The automatic thickness measuring machine for battery separators according to claim 3, characterized in that: The detection drive mechanism also includes: a lower connecting plate, located between the upper connecting plate and the detection connecting plate, through which the detection drive screw rod passes, connected to the bottom end of the detection drive electric cylinder and passed through by the telescopic rod of the detection drive electric cylinder, and with detection sliders respectively provided on the front and rear sides of the lower connecting plate; The two detection guide rails are arranged side by side along the front-to-back direction, with the length direction being the up-down direction. The two detection guide rails are respectively slidably connected to the detection slider on the same side.

5. The automatic thickness measuring machine for battery separators according to any one of claims 1 to 4, characterized in that: The battery diaphragm automatic thickness measuring machine also includes: A main truss is arranged across the diaphragm loading device and the diaphragm unloading device, and has a loading and unloading rack on the top, and the length direction of the loading and unloading rack is the left-right direction; The diaphragm loading device and the diaphragm unloading device both have an loading and unloading servo motor, an loading and unloading gear and an loading and unloading connecting plate. The loading and unloading gear is fixed on the motor shaft of the loading and unloading servo motor, and the loading and unloading gear is meshed and connected with the loading and unloading rack. The loading and unloading servo motor is fixed on the loading and unloading connecting plate. The vacuum suction cup assembly is also fixed on the loading and unloading connecting plate. The loading and unloading servo motor rotates, driving the loading and unloading gear to rotate, and then driving the loading and unloading gear to make left and right linear motion on the loading and unloading rack, and finally driving the vacuum suction cup assembly to make left and right linear motion.

6. The automatic thickness measuring machine for battery separators according to claim 5, characterized in that: The front and rear sides of the main truss are respectively provided with loading and unloading linear guide rails, and the length direction of the loading and unloading linear guide rails is the left and right direction; A plurality of loading and unloading sliding blocks are respectively provided on the front and rear sides of the loading and unloading connecting plate, and the loading and unloading sliding blocks on the front and rear sides are respectively slidably connected to the loading and unloading linear guide rails on the same side.

7. The automatic thickness measuring machine for battery separators according to any one of claims 1 to 4, characterized in that: The diaphragm feeding device further includes a diaphragm lifting mechanism, which is located below the vacuum suction cup assembly of the diaphragm feeding device, and the diaphragm lifting mechanism includes: The loading mounting plate has a lifting groove with an open structure on one side, and a loading frame is provided around the lifting groove; a diaphragm tray rack, located in the loading frame and movable up and down in the loading frame, with two sides of the diaphragm tray rack abutting against the loading mounting plate around the lifting groove; The lifting plate can move up and down. One side of the lifting plate is located below the lifting groove and the diaphragm tray rack. The diaphragm tray rack is lifted and lowered by the lifting plate.

8. The automatic thickness measuring machine for battery separators according to claim 7, characterized in that: The loading mounting plate is provided with a plurality of lifting slots and a plurality of loading frames, and the diaphragm tray racks are provided with a plurality of diaphragm tray racks, each of which is located in a corresponding one of the loading frames; The loading installation plate can be moved forward and backward or left and right, and one of the diaphragm tray racks is moved to the upper side of the lifting plate by the forward and backward or left and right movement of the loading installation plate.

9. The automatic thickness measuring machine for battery separators according to claim 8, characterized in that: The diaphragm feeding device further includes a material changing drive mechanism, and the material changing drive mechanism includes: The material changing mounting plate is provided with a material changing rack, wherein the length direction of the material changing rack is the front-back direction or the left-right direction; A material changing servo motor is fixed on the feeding mounting plate; The material changing gear is fixed on the motor shaft of the material changing servo motor and is meshed with the material changing rack. The material changing servo motor rotates, driving the material changing gear to rotate, and then driving the material changing gear to make forward and backward or left and right linear motion on the material changing rack, and finally driving the loading mounting plate to make forward and backward or left and right linear motion.

10. The automatic thickness measuring machine for battery separators according to claim 7, characterized in that: The diaphragm feeding device further includes a lifting drive mechanism for driving the lifting plate to move up and down, and the lifting drive mechanism includes: Lift the fixed plate; a lifting connecting plate, located above the lifting plate and connected to the lifting fixing plate via a plurality of guide rods, wherein the guide rods pass through the lifting plate; A lifting drive motor is fixed on the lifting fixed plate, and the axial direction of the motor shaft is vertical; A lifting drive screw, the axial direction of which is in the up-down direction, the lower end of which is connected to the motor shaft of the lifting drive motor through a transmission assembly, and the upper end of which is mounted on the lifting connection plate through a bearing; The lifting drive nut is rotatably connected to the lifting drive screw, and the lifting drive nut is fixed to the lifting plate. The lifting drive motor rotates to drive the lifting drive screw, thereby driving the lifting drive nut to rise and fall, and finally driving the lifting plate to rise and fall.

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