A battery core thickness measuring instrument

Abstract

This invention relates to the field of measuring instrument technology and discloses a battery core thickness measuring instrument, comprising: a base; a pressing assembly for applying pressure; a supporting assembly for cooperating with the pressing assembly to complete the thickness measurement; and a control assembly for operator control of the pressing assembly and the supporting assembly. A mounting plate is installed on the base, a protective frame is installed on the base, and a column is connected to the mounting plate. Through the cooperation of the pressing assembly and the supporting assembly, the thickness of both sides of the core under test is measured. The pressing plate and the supporting platform are made of marble to avoid unevenness during use, which could affect measurement accuracy and prevent deformation from affecting the measurement data. The cooperation of two hanging rings and a hanging shaft allows for precise control of the pressure value exerted by the pressure head and the pressing plate on the core under test.

Description

Technical Field

[0001] The invention relates to the technical field of measuring instruments, and in particular to a battery core thickness measuring instrument. Background Art

[0002] The electrode core is composed of a layer of diaphragm (folded repeatedly), a layer of positive electrode sheet, a layer of diaphragm, and a layer of negative electrode sheet, which are stacked together to form a non-rigid rectangular electrode core with a certain elasticity. One end is the positive electrode of the electrode core, and the other end is the negative electrode of the electrode core. During the production process of the electrode core, a thickness measuring device is required to measure the thickness of the electrode core under a set pressure.

[0003] However, the prior art has the following problems:

[0004] 1. After long-term use, the measuring pressure plate of the prior art will produce some bumps and concave spots due to bumps. The generation of bumps and concave spots will affect the flatness of the pressure plate, thereby affecting the uniformity of the pressure of the pressure plate. Under high pressure, local convex spots may press through the surface diaphragm of the electrode core and the positive and negative plates, causing a short circuit between the positive and negative plates of the electrode core.

[0005] 2. In the prior art, when applying pressure to the pole core, the pressure plate usually adopts a guide mechanism. The guide mechanism will cause a certain friction and eccentric load to be generated during the downward pressing process of the pressure plate, which will have a certain impact on the actual pressure, resulting in a certain error between the value reflected by the pressure data and the actual pressure.

[0006] 3. After long-term use, the measuring device of the prior art may have problems such as installation displacement or measurement error, which will affect the accuracy of the measurement data. Summary of the invention

[0007] The purpose of the present invention is to provide a battery core thickness measuring instrument to solve the above-mentioned problems and overcome the defects of the prior art, as described in detail below.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A battery core thickness measuring instrument provided by the present invention comprises: a base; a pressing assembly for pressing down and applying pressure; a lower supporting assembly for cooperating with the pressing assembly to complete thickness measurement; a control assembly for a worker to operate and control the pressing assembly and the lower supporting assembly; a mounting plate is mounted on the base, a protective frame is mounted on the base, a column is connected to the mounting plate, a No. 1 connecting piece is mounted on the top of the column, a No. 2 connecting piece and a No. 3 connecting piece are mounted on the front side of the column, the pressing assembly is arranged on the column, the lower supporting assembly is arranged on the base, and the control assembly is arranged on the protective frame;

[0010] The pressing assembly includes a servo motor, which is installed on a No. 1 connecting piece, an upper bearing seat is connected to the No. 2 connecting piece, and a lower bearing seat is connected to the No. 3 connecting piece. Ball screws are rotatably installed on the upper bearing seat and the lower bearing seat, and the ball screw is connected to the output end of the servo motor through a coupling. Two linear guides are connected to the front side of the column, and slides are slidably installed on the two linear guides. A nut slide is connected to the slide, and a threaded groove is provided on the ball screw. The inner wall of the nut slide is slidably connected to the threaded groove on the ball screw through a ball. A hanging shaft and a pressure head are installed on the slide, and a pressure sensor is installed on the pressure head;

[0011] The lower support assembly includes two linear slide rails, both of which are installed on a base, and lower support seat plates are slidably installed on the two linear slide rails. Vibration-damping pads are connected to the lower support seat plates, and a lower support platform is connected to the vibration-damping pads. Mounting seats are respectively installed on both sides of the lower support platform, and a displacement sensor is installed on the mounting seats.

[0012] Preferably, four supporting casters are installed at the bottom of the base, and safety isolation doors are respectively provided on the left and right sides and the rear side of the protective frame.

[0013] Preferably, the outer wall of the slide is connected to a movable shield, the column is connected to a fixed shield, and the movable shield is slidably connected to the fixed shield.

[0014] Preferably, the downward pressure assembly also includes a hanger, the top of the hanger is connected to two hanging rings, the bottom of the hanger is connected to a downward pressure plate, the top of the hanger is installed with a pressure platform, and the two hanging rings are respectively hung at both ends of the hanging shaft.

[0015] Preferably, the inner wall height of the hanging ring is greater than the outer wall height of the hanging shaft, the pressure sensor on the pressure head is in contact with the pressure platform during movement, a probe is provided on the displacement sensor, and the probes of the two displacement sensors are both located on the movement trajectory of the lower pressure plate.

[0016] Preferably, the lower pressure plate and the lower supporting platform are both made of marble, and the pole core to be tested is placed on the lower supporting platform.

[0017] Preferably, a transposition cylinder is installed on the base, a connecting seat is connected to the lower supporting plate, an output end of the transposition cylinder is connected to the connecting seat, and a cylinder is arranged inside the displacement sensor.

[0018] Preferably, a placement bin is installed on the base, and two calibration blocks are placed in the placement bin. The calibration block has an H-shaped shape, and the two side planes of the calibration block are defined as surface No. 1, and the three surfaces of the calibration block facing the base are defined as two surfaces No. 2 and a surface No. 3, the two surfaces No. 2 are located in the same horizontal plane, and the back of the surface No. 3 is defined as surface No. 5, and the two backs of the two surfaces No. 2 are defined as surfaces No. 4, and the two surfaces No. 4 are located in the same horizontal plane, and the distance between the surface No. 2 and the surface No. 3 is smaller than the distance between the surface No. 4 and the surface No. 5.

[0019] Preferably, the control component includes an operation box, a display, an industrial computer, a pneumatic control valve group, a position indicator light, a barcode scanner and a button; the operation box, the barcode scanner and the button are all installed on the outer wall of the protective frame; the display, the industrial computer, the pneumatic control valve group and the position indicator light are all installed inside the protective frame; the industrial computer is electrically connected to the servo motor; the pneumatic control valve group is electrically connected to the transposition cylinder and two displacement sensors; the display is electrically connected to the operation box, the pressure sensor and the two displacement sensors; the operation box is electrically connected to the industrial computer, the pneumatic control valve group and the display; the button is electrically connected to the operation box; two safety gratings are installed on the protective frame; and both safety gratings are electrically connected to the operation box.

[0020] The beneficial effects are:

[0021] 1. The battery core thickness measuring instrument measures the thickness of both sides of the core to be measured through the cooperation of the lower pressure component and the lower support component, so as to analyze and calculate the average thickness, maximum thickness, minimum thickness and upper and lower surface parallelism of the core to be measured; the lower pressure plate and the lower support platform are made of marble to avoid the occurrence of concave and convex points during use, thereby affecting the measurement accuracy, and at the same time ensure that the core surface will not be damaged due to thickness detection, and the deformation generated by the lower pressure plate and the lower support platform is extremely small, and the pressure applied by the lower pressure plate to the core to be measured is relatively uniform, avoiding the influence of the deformation on the measurement data, so that the data measured by the two displacement sensors is also relatively accurate; through the cooperation of two hanging rings and hanging shafts, the pressure value generated by the pressure head and the lower pressure plate on the core to be measured can be accurately controlled, and the pressure is not disturbed by external force factors, avoiding the phenomenon of eccentric load and force, and the pressure value is displayed accurately.

[0022] 2. The battery core thickness measuring instrument, through the cooperation of two calibration blocks and two displacement sensors, enables the displacement sensor to perform linear self-check before working, to ensure the measurement accuracy of the displacement sensor and avoid measurement errors caused by the displacement sensor's own failure or displacement.

[0023] 3. The battery core thickness measuring instrument, through the setting of the transposition cylinder, makes it convenient for the staff to move up and down the core to be tested. The layout of the relevant mechanisms is relatively simple, which is convenient for the staff to clean and maintain; the setting of the protective frame, safety isolation door and safety grating improves the safety during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the control component structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the column structure of the present invention;

[0028] Figure 4 It is a schematic diagram of the base structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the pressing assembly of the present invention;

[0030] Figure 6 is a front view schematic diagram of the rack of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the lower pressing plate of the present invention;

[0032] Figure 8 It is a schematic diagram of the structure of the lower support assembly of the present invention;

[0033] Fig. 9 It is a schematic diagram of the structure of the lower supporting platform of the present invention;

[0034] Fig.10 The present invention Fig. 9 A magnified schematic diagram of point A;

[0035] Fig.11 It is a schematic diagram of the calibration block structure of the present invention.

[0036] The reference numerals are as follows: 1. base; 11. supporting casters; 12. mounting plate; 2. protection frame; 21. safety isolation door; 3. column; 31. connector No. 1; 32. connector No. 2; 33. connector No. 3; 4. pressing assembly; 41. servo motor; 42. upper bearing seat; 43. lower bearing seat; 44. ball screw; 45. nut slide; 46. linear guide; 47. slide; 48. hanging shaft; 49. movable shield; 410. fixed shield; 411. hanging ring; 412. bracket; 413. lower pressure plate; 414. pressure platform; 415. pressure head; 416. Pressure sensor; 5. Lower support assembly; 51. Linear guide rail; 52. Lower support seat plate; 53. Vibration damping pad; 54. Transposition cylinder; 55. Connecting seat; 56. Lower support platform; 57. Mounting seat; 58. Displacement sensor; 6. Calibration block; 61. Surface No. 1; 62. Surface No. 2; 63. Surface No. 3; 64. Surface No. 4; 65. Surface No. 5; 66. Storage bin; 7. Safety grating; 8. Control assembly; 81. Operation box; 82. Display; 83. Industrial computer; 84. Air control valve group; 85. Position indicator light; 86. Barcode scanner; 87. Button; 9. Pole core to be tested. DETAILED DESCRIPTION

[0037] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention. Example

[0038] See also Figure 1 - Figure 8 A battery core thickness measuring instrument comprises: a base 1, four supporting casters 11 are installed at the bottom of the base 1, and the four supporting casters 11 can be adjusted up and down to a certain extent to fix the base 1 and adjust the level of the base 1. The supporting casters 11 can also be adjusted to a rolling mode to move the base 1 for a short distance. Safety isolation doors 21 are respectively arranged on the left and right sides and the rear side of the protective frame 2. The three safety isolation doors 21 play a protective role. A mounting plate 12 is installed on the base 1, and a protective frame 2 is installed on the base 1. A column 3 is connected to the mounting plate 12. A No. 1 connecting piece 31 is installed on the top of the column 3, and a No. 2 connecting piece 32 and a No. 3 connecting piece 33 are installed on the front side of the column 3.

[0039] Furthermore, the pressing component 4 is used for pressing down and applying pressure. The pressing component 4 is arranged on the column 3. The pressing component 4 includes a servo motor 41. The servo motor 41 is installed on the No. 1 connecting piece 31. The No. 2 connecting piece 32 is connected to an upper bearing seat 42. The No. 3 connecting piece 33 is connected to a lower bearing seat 43. A ball screw 44 is rotatably installed on the upper bearing seat 42 and the lower bearing seat 43. The ball screw 44 is connected to the output end of the servo motor 41 through a coupling. Two linear guide rails 46 are connected to the front side of the column 3. Slides 47 are slidably installed on the two linear guide rails 46. A nut slide 45 is connected to the slide 47. A threaded groove is arranged on the ball screw 44. The inner wall of the nut slide 45 is slidably connected to the threaded groove on the ball screw 44 through a ball. The servo motor 41 drives the ball screw 44 to rotate on the upper bearing seat 42 and the lower bearing seat 43 through the coupling. Due to the limiting effect of the slide 47 on the nut slide 45, the ball screw 44 drives the nut slide 45 to move downward through the cooperation of the thread groove and the ball when rotating forward, and drives the nut slide 45 to move upward when the ball screw 44 is reversed. The outer wall of the slide 47 is connected to a movable shield 49, and the column 3 is connected to a fixed shield 410. The movable shield 49 is slidably connected to the fixed shield 410, and the movable shield 49 moves with the slide 47. The movable shield 49 and the fixed shield 410 protect the slide 47 and the ball screw 44. A hanging shaft 48 and a pressure head 415 are installed on the slide 47, and a pressure sensor 416 is installed on the pressure head 415. Component 4 also includes a hanger 412, the top of which is connected to two hanging rings 411, the bottom of which is connected to a lower pressure plate 413, and the top of the hanger 412 is equipped with a pressure platform 414, the two hanging rings 411 are respectively hung at the two ends of the hanging shaft 48, the inner wall height of the hanging ring 411 is greater than the outer wall height of the hanging shaft 48, and the hanging shaft 48 can move a distance in the space generated by the inner wall of the hanging ring 411. Therefore, after the hanging ring 411 stops moving, the slide 47 and the hanging shaft 48 can continue to descend a distance, so that the hanging shaft 48 can be out of contact with the two hanging rings 411, and the pressure sensor 416 on the pressure head 415 contacts the pressure platform 414 during the movement, and the pressure sensor 416 on the pressure head 415 contacts the pressure platform 414 on the lower pressure plate 413. The pressing table 414 is in contact, and the pressing head 415 applies downward pressure to the lower pressing plate 413 through the pressure sensor 416. The pressure applied by the pressing head 415 to the lower pressing plate 413 is transmitted to the display 82 through the pressure sensor 416. The mass of the lower pressing plate 413 is fixed, and the staff can input the mass of the lower pressing plate 413 on the display 82 in advance. The pressure on the pole core 9 to be tested displayed on the display 82 is equal to the mass of the lower pressing plate 413 plus the pressure applied by the pressing head 415 to the lower pressing plate 413. The pressure sensor 416 is in direct contact with the lower pressing plate 413, and no other guiding device is provided between them to avoid the generation of additional eccentric load acting on the pressure sensor 416, resulting in data deviation of the pressure sensor 416. A probe is provided on the displacement sensor 58.The probes of the two displacement sensors 58 are both located on the motion track of the lower pressing plate 413. During the movement of the lower pressing plate 413, the lower pressing plate 413 contacts the two probes of the two displacement sensors 58. The probes shrink downward after being pressed downward, and the display 82 displays the displacement distance data of the two displacement sensors 58.

[0040] Furthermore, the lower support component 5 is used to cooperate with the lower pressing component 4 to complete the thickness measurement. The lower support component 5 is arranged on the base 1. The lower support component 5 includes two linear slide rails 51. The two linear slide rails 51 are both installed on the base 1. A lower support seat plate 52 is slidably installed on the two linear slide rails 51. A vibration-damping pad 53 is connected to the lower support seat plate 52. A lower support platform 56 is connected to the vibration-damping pad 53. The vibration-damping pad 53 is a polyurethane shock-absorbing material. The vibration-damping pad 53 can ensure that the bottom surface supporting force of the lower support platform 56 is relatively uniform, and avoids the lower support platform 56 from directly contacting the lower support seat plate 52 with higher rigidity, which may cause the lower support platform 56 to be partially fractured due to force. The two sides of the lower support platform 56 are divided into The mounting seat 57 is separately installed, and the displacement sensor 58 is installed on the mounting seat 57. The lower pressure plate 413 and the lower support platform 56 are both made of marble. The density of marble is relatively low and the rigidity is high. In the natural state, the internal stress of marble has been fully released, and the chemical and physical properties of marble are relatively stable, and the corrosion resistance and high temperature resistance are good. The deformation caused by extrusion during the measurement process is extremely small, and the influence on the measurement result is small. In addition, marble will not produce convex points after being bumped, and can be filled and polished with resin paint for easy maintenance and repair, so as to avoid the convex points of metal materials affecting the measurement results; the pole core 9 to be measured is placed on the lower support platform 56, and the base 1 is installed There is a transposition cylinder 54, and a connecting seat 55 is connected to the lower supporting seat plate 52. The output end of the transposition cylinder 54 is connected to the connecting seat 55. The transposition cylinder 54 drives the lower supporting seat plate 52 to move forward through the connecting seat 55, and the lower supporting seat plate 52 drives the vibration damping pad 53 and the lower supporting platform 56 to move synchronously. After the lower supporting seat plate 52 moves forward, it is convenient for the staff to move up and down the pole core 9 to be tested. The displacement sensor 58 is provided with a cylinder inside. In the non-working state, the probe is retracted to below the upper surface of the lower supporting platform 56 to protect the probe; through the cooperation of the pressing assembly 4 and the lower supporting assembly 5, the thickness of the pole core 9 to be tested is measured, so as to analyze and calculate the thickness of the pole core to be tested. 9's average thickness, maximum thickness, minimum thickness and parallelism of the upper and lower surfaces; the lower pressure plate 413 and the lower supporting platform 56 are made of marble to avoid the occurrence of bumps and concave spots during use, which affects the measurement accuracy, while ensuring that the surface of the pole core will not be damaged due to thickness detection. The pressure applied by the lower pressure plate 413 to the pole core 9 to be measured is relatively uniform, so that the data measured by the two displacement sensors 58 are also relatively accurate; through the cooperation of the two hanging rings 411 and the hanging shaft 48, the pressure value generated by the pressure head 415 and the lower pressure plate 413 on the pole core 9 to be measured can be accurately controlled, and the pressure is not disturbed by external factors, avoiding the phenomenon of eccentric load and force, and the pressure value is displayed accurately.

[0041] Further, see Fig. 9 - Fig.11A placement bin 66 is installed on the base 1, and two calibration blocks 6 are placed in the placement bin 66. The two calibration blocks 6 are placed in the placement bin 66 on the base 1. The placement bin 66 is provided with an interlocking module. During the measurement operation, the placement bin 66 locks the calibration block 6, and the calibration block 6 cannot be taken out. When the calibration block 6 is not positioned and placed in the placement bin 66, the measurement operation cannot be performed, so as to avoid the two calibration blocks 6 being randomly placed during use, resulting in damage or loss of the calibration block 6, thereby affecting the linear self-test operation; The shape of the calibration block 6 is H-shaped, and the two side planes of the calibration block 6 are defined as the first surface 61, and the three surfaces of the calibration block 6 facing the base 1 are defined as two second surfaces 62 and a third surface 63, the two second surfaces 62 are located in the same horizontal plane, and the back of the third surface 63 is defined as a fifth surface 65, and the two backs of the two second surfaces 62 are defined as fourth surfaces 64, and the two fourth surfaces 64 are located in the same horizontal plane. The distance between the second surface 62 and the third surface 63 is smaller than the distance between the fourth surface 64 and the fifth surface 65, and the worker The staff uses the displacement sensor 58 to measure the distance between the second surface 62 and the third surface 63, and the distance between the fourth surface 64 and the fifth surface 65. Since the distance on the calibration block 6 is constant, the data measured by the displacement sensor 58 can be compared to determine whether the data of the displacement sensor 58 is accurate. When the error between the measurement data of the displacement sensor 58 and the data of the calibration block 6 is within a reasonable range, the error of the two displacement sensors 58 can be reduced through calibration. When the error between the measurement data of the displacement sensor 58 and the data of the calibration block 6 is greater than the set range, the display 82 triggers an abnormal situation alarm. The staff needs to check the corresponding displacement sensor 58, find out whether the displacement sensor 58 has a displacement or lifelong fault problem, and repair the fault; through the cooperation of the two calibration blocks 6 and the two displacement sensors 58, the displacement sensor 58 can perform a linear self-check before working, to ensure the measurement accuracy of the displacement sensor 58, and avoid measurement errors caused by the displacement sensor 58's own fault or displacement.

[0042] For further information, see Figure 1 - Fig.11The control component 8 is used for the staff to operate and control the pressing component 4 and the supporting component 5. The control component 8 is arranged on the protection frame 2. The control component 8 includes an operation box 81, a display 82, an industrial computer 83, an air control valve group 84, a position indicator light 85, a barcode scanner 86 and a button 87. The operation box 81, the barcode scanner 86 and the button 87 are all installed on the outer wall of the protection frame 2. The display 82, the industrial computer 83, the air control valve group 84 and the position indicator light 85 are all installed inside the protection frame 2. The industrial computer 83 is electrically connected to the servo motor 41, the air control valve group 84 is electrically connected to the transposition cylinder 54 and the two displacement sensors 58, the display 82 is electrically connected to the operation box 81, the pressure sensor 416 and the two displacement sensors 58, and the display 82 can display the two displacement sensors 58. The display 82 can also control the operation box 81 by touch screen. The display 82 can also set different working modes and input working parameters. When the parameters of the display 82 are set, the button 87 can perform the measurement operation with one click, which is convenient for the staff to operate. The operation box 81 is electrically connected to the industrial computer 83, the air control valve group 84 and the display 82. The button 87 is electrically connected to the operation box 81. Two safety gratings 7 are installed on the protective frame 2. The two safety gratings 7 are electrically connected to the operation box 81. During the measurement operation, if the two safety gratings 7 detect the presence of an object, the two safety gratings 7 can stop the measurement operation through the operation box 81. The position indicator light 85 uses infrared light to guide the transfer device to accurately place the transfer device.

[0043] With the above structure, the working principle of this case is that the operation box 81 can control the servo motor 41 to rotate forward or reversely through the industrial computer 83, the operation box 81 can control the extension and retraction of the transposition cylinder 54 through the pneumatic control valve group 84, and the cylinder inside the displacement sensor 58 can drive the probe to extend and retract. In the non-working state, the pneumatic control valve group 84 can control the probe to retract below the upper surface of the lower support platform 56 to protect the probe. The barcode scanning gun 86 is used to scan the pole core 9 to be tested for information that needs to be scanned. The button 87 is connected to the display 82. The display 82 can display the distance data of the two displacement sensors 58 and the pressure data of the pressure sensor 416. The display 82 can also control the operation box 81 by touch screen. The display 82 can also set different working modes and Input working parameters. When the parameters of the display 82 are set, the button 87 can perform the measurement operation with one button, which is convenient for the staff to operate. The two safety gratings 7 are used to protect the staff. During the measurement operation, if the two safety gratings 7 detect the existence of an object, the two safety gratings 7 can stop the measurement operation through the operation box 81. The four supporting casters 11 on the base 1 can be adjusted up and down to a certain extent to achieve the function of fixing the base 1 and adjusting the level of the base 1. The supporting casters 11 can also be adjusted to a rolling mode to move the base 1 for a short distance. An interlocking module is provided between the three safety isolation doors 21 on the protection frame 2 and the operation box 81. During the detection operation, the three safety isolation doors 21 cannot be opened, and the three safety isolation doors 21 play a protective role.

[0044] When testing the pole core 9 to be tested, the measurement reference point is calibrated first, and the servo motor 41 is controlled to rotate forward by the industrial computer 83. The servo motor 41 drives the ball screw 44 to rotate on the upper bearing seat 42 and the lower bearing seat 43 through the coupling. Due to the limiting effect of the slide 47 on the nut slide 45, the ball screw 44 drives the nut slide 45 to move downward through the cooperation of the thread groove and the ball when the ball screw 44 rotates forward. Similarly, when the motor 41 drives the ball screw 44 to reverse, the nut slide 45 moves upward, and the nut slide 45 moves to the lower side. When the lower pressing plate 413 moves downward, the lower pressing plate 413 contacts the two probes of the two displacement sensors 58. The probes are pressed downward and contract downward. When the lower pressing plate 413 contacts the lower supporting platform 56, the lower pressing plate 413 stops moving downward due to the obstruction of the lower supporting platform 56. The lower pressing plate 413 stops moving downward due to the obstruction of the lower supporting platform 56. The lower pressing plate 413 contacts the two probes of the two displacement sensors 58. The lower pressing plate 413 contacts the two probes of the two displacement sensors 58. The probes are pressed downward and contract downward. When the lower pressing plate 413 contacts the lower supporting platform 56, the lower pressing plate 413 stops moving downward due to the obstruction of the lower supporting platform 56. The lower pressing plate 413 contacts the two probes of the two displacement sensors 58 ... Continue to move downward. Since the hanging shaft 48 can move a certain distance in the space generated by the inner wall of the hanging ring 411, after the hanging ring 411 stops moving, the slide 47 and the hanging shaft 48 can continue to descend a certain distance, so that the hanging shaft 48 is out of contact with the two hanging rings 411, and the servo motor is stopped. At this time, the display 82 displays the displacement distance data of the two displacement sensors 58. This data is recorded as L0 and used as a measurement reference. Then the servo motor 41 is controlled to reverse and the lower pressing plate 413 is reset. Since the lower pressing plate 413 and the lower supporting platform 56 are both made of marble, and the density of marble is relatively low and the rigidity is high, the internal stress of marble has been fully released in the natural state, and the chemical and physical properties of marble are relatively stable, and the corrosion resistance and high temperature resistance are good. The deformation caused by extrusion during the measurement process is extremely small, which has little effect on the measurement result. In addition, marble will not produce convex points after being bumped, and can be filled and polished with resin paint for easy repair and maintenance, so as to avoid the convex points of metal materials affecting the measurement results.

[0045] The extension of the transposition cylinder 54 is controlled by the air control valve group 84, and the transposition cylinder 54 drives the lower support seat plate 52 to move forward through the connecting seat 55. The lower support seat plate 52 drives the vibration-damping pad 53 and the lower support platform 56 to move synchronously. The vibration-damping pad 53 is a polyurethane shock-absorbing material. The vibration-damping pad 53 can ensure that the bottom surface supporting force of the lower support platform 56 is relatively uniform, and avoids the lower support platform 56 directly contacting the lower support seat plate 52 with higher rigidity, which may cause the lower support platform 56 to be partially stressed and broken. After the lower support platform 56 moves forward into position, the pole core 9 to be tested is placed on the lower support platform 56 through the transfer device. In the process of placing the pole core 9 to be tested, the position indicator light 85 uses infrared light to guide the transfer device, so that the transfer device is placed in an accurate position and the pole core 9 to be tested is placed. After being on the lower supporting platform 56, the control transposition cylinder 54 is contracted. When the transposition cylinder 54 contracts, it drives the lower supporting platform 56 to reset, so that the lower supporting platform 56 and the pole core 9 to be tested are located directly below the lower pressing plate 413. At this time, the servo motor 41 is controlled to rotate forward again to move the lower pressing plate 413 downward. When the lower pressing plate 413 contacts the pole core 9 to be tested, the lower pressing plate 413 stops descending due to the obstruction of the pole core 9 to be tested, and the slide 47 drives the hanging shaft 48 and the pressure head 415 to continue to descend, so that the pressure sensor 416 on the pressure head 415 contacts the pressure platform 414 on the lower pressing plate 413, and the pressure head 415 applies downward pressure to the lower pressing plate 413 through the pressure sensor 416. The pressure applied by the pressure head 415 to the lower pressing plate 413 is transmitted through the pressure sensor 416 is transmitted to the display 82, the mass of the lower pressing plate 413 is fixed, and the staff can input the mass of the lower pressing plate 413 on the display 82 in advance. The pressure on the pole core 9 to be tested displayed on the display 82 is equal to the mass of the lower pressing plate 413 plus the pressure applied by the pressure head 415 to the lower pressing plate 413. The pressure sensor 416 is in direct contact with the lower pressing plate 413, and no other guiding device is provided between them, so as to avoid the generation of additional eccentric load acting on the pressure sensor 416, resulting in data deviation of the pressure sensor 416. In addition, since the lower pressing plate 413 made of marble has high rigidity and low deformation, the pressure applied by the lower pressing plate 413 to the pole core 9 to be tested is relatively uniform. When the pressure data displayed on the display 82 is When the measured pressure value set in advance is reached, the servo motor 41 stops rotating and enters the pressure holding state. At this time, the displacement distance data of the two displacement sensors 58 are recorded as L11 and L22 respectively. At this time, the thickness L1=L11-L0 on one side of the pole core 9 to be measured can be calculated; the thickness L2=L22-L0 on the other side of the pole core 9 to be measured can be calculated; based on the data of L1 and L2, the average thickness, maximum thickness, minimum thickness and parallelism of the upper and lower surfaces of the pole core 9 to be measured can be analyzed and calculated, so as to perform thickness dimension analysis and determine the product quality grade. After the measurement is completed, the transposition cylinder 54 is controlled to extend to move the lower support platform 56 forward, remove the pole core 9 to be measured, replace the next pole core 9 to be measured, and repeat the above steps to measure in sequence;Through the cooperation of the lower pressing component 4 and the lower supporting component 5, the thickness of both sides of the pole core 9 to be measured is measured, so that the average thickness, maximum thickness, minimum thickness and parallelism of the upper and lower surfaces of the pole core 9 to be measured are analyzed and calculated; the lower pressing plate 413 and the lower supporting platform 56 are made of marble to avoid the occurrence of concave and convex points during use, thereby affecting the measurement accuracy. The pressure applied by the lower pressing plate 413 to the pole core 9 to be measured is relatively uniform, so that the data measured by the two displacement sensors 58 are also relatively accurate; through the cooperation of the two hanging rings 411 and the hanging shaft 48, the pressure value generated by the pressure head 415 and the lower pressing plate 413 on the pole core 9 to be measured can be accurately controlled, and the pressure is not disturbed by external force factors, avoiding the phenomenon of eccentric load and force, and the pressure value is accurately displayed. ;

[0046] Before the staff conducts batch measurement, it is necessary to perform a linear self-test of the displacement sensor 58. Two calibration blocks 6 are placed in the placement bin 66 on the base 1. An interlocking module is provided between the placement bin 66 and the operation box 81. During the measurement operation, the placement bin 66 locks the calibration block 6, and the calibration block 6 cannot be taken out. When the calibration block 6 is not positioned and placed in the placement bin 66, the operation box 81 cannot perform the measurement operation, so as to avoid the two calibration blocks 6 being placed randomly during use, resulting in damage or loss of the calibration block 6, thereby affecting the linear self-test operation. During the linear self-test operation, the staff enters the linear self-test mode through the touch screen control. The linear self-test mode is provided with the displacement sensor No. 1 point calibration, the displacement sensor No. 2 point calibration, and the displacement sensor No. 3 point calibration. 1, 2 and 3. Calibrate the displacement sensor at point No. 1 and point No. 3. Take out two calibration blocks 6. First, press the probes of the two displacement sensors 58 with the No. 1 surfaces 61 of the two calibration blocks 6 respectively. Place the two calibration blocks 6 on the lower support platform 56 with the No. 1 surfaces 61 facing downward. The two probes shrink after being squeezed. Since the No. 1 surface 61 is a plane, the value measured by the probe at this time is the distance between the No. 1 surface 61 and the lower support platform 56, which should be 0. At this time, click on the No. 1 calibration of the displacement sensor. The display 82 displays the measurement data of the two displacement sensors 58 and calibrates the correct data. Place the two calibration blocks 6 on the lower support platform 56 with the No. 2 surfaces 62 facing downward and the No. 3 surface 63 in contact with the contact. The data measured by the two displacement sensors 58 is the distance between the second surface 62 and the third surface 63, and the distance between the second surface 62 and the third surface 63 is constant. The data measured by the two displacement sensors 58 should be equal to the constant distance between the second surface 62 and the third surface 63. At this time, click on the No. 2 point calibration of the displacement sensor, and the display 82 displays the measurement data of the two displacement sensors 58 and calibrates the correct data; similarly, place the No. 5 surface 65 of the two calibration blocks 6 downward on the lower support platform 56, and the displacement sensor 58 measures the distance between the No. 5 surface 65 and the No. 4 surface 64. Click on the No. 3 point calibration of the displacement sensor, and the display 82 displays the measurement data of the two displacement sensors 58 and calibrates the correct data; when the displacement sensor When the error between the measurement data of the displacement sensor 58 and the data of the calibration block 6 is within a reasonable range, the error between the two displacement sensors 58 can be reduced through calibration. When the error between the measurement data of the displacement sensor 58 and the data of the calibration block 6 is greater than the set range, the display 82 triggers an abnormal situation alarm, and the staff needs to check the corresponding displacement sensor 58, find out whether the displacement sensor 58 has a displacement or lifelong fault problem, and repair the fault; through the cooperation of the two calibration blocks 6 and the two displacement sensors 58, the displacement sensor 58 can perform a linear self-check before working, so as to ensure the measurement accuracy of the displacement sensor 58 and avoid measurement errors caused by the displacement sensor 58's own fault or displacement.

[0047] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A battery core thickness measuring instrument, characterized in that: include: Base (1); A downward pressing component (4), used for pressing downward to apply pressure; A lower support component (5) is used to cooperate with the lower pressing component (4) to complete thickness measurement; A control component (8) is used for a worker to operate and control the pressing component (4) and the supporting component (5); The base (1) is provided with a mounting plate (12), the base (1) is provided with a protective frame (2), the mounting plate (12) is connected to a column (3), a first connecting piece (31) is provided on the top of the column (3), a second connecting piece (32) and a third connecting piece (33) are provided on the front side of the column (3), the pressing component (4) is provided on the column (3), the supporting component (5) is provided on the base (1), and the control component (8) is provided on the protective frame (2); The pressing assembly (4) comprises a servo motor (41), the servo motor (41) is mounted on the first connecting member (31), the second connecting member (32) is connected to an upper bearing seat (42), the third connecting member (33) is connected to a lower bearing seat (43), a ball screw (44) is rotatably mounted on the upper bearing seat (42) and the lower bearing seat (43), the ball screw (44) is connected to the output end of the servo motor (41) via a coupling, and the front end of the column (3) Two linear guide rails (46) are connected to the side, slides (47) are slidably mounted on the two linear guide rails (46), a nut slide seat (45) is connected to the slide seat (47), a thread groove is provided on the ball screw (44), the inner wall of the nut slide seat (45) is slidably connected to the thread groove on the ball screw (44) through a ball, a hanging shaft (48) and a pressure head (415) are mounted on the slide seat (47), and a pressure sensor (416) is mounted on the pressure head (415); The lower support assembly (5) comprises two linear slide rails (51), the two linear slide rails (51) are both mounted on the base (1), a lower support seat plate (52) is slidably mounted on the two linear slide rails (51), a vibration-damping pad (53) is connected to the lower support seat plate (52), the vibration-damping pad (53) is connected to a lower support platform (56), mounting seats (57) are respectively mounted on both sides of the lower support platform (56), and a displacement sensor (58) is mounted on the mounting seat (57); The pressing assembly (4) further comprises a hanging rack (412), the top of the hanging rack (412) being connected to two hanging rings (411), the bottom of the hanging rack (412) being connected to a pressing plate (413), the top of the hanging rack (412) being installed with a pressure platform (414), and the two hanging rings (411) being respectively hung at two ends of the hanging shaft (48); The inner wall height of the hanging ring (411) is greater than the outer wall height of the hanging shaft (48); the pressure sensor (416) on the pressure head (415) contacts the pressure platform (414) during movement; a probe is provided on the displacement sensor (58); and the probes of the two displacement sensors (58) are both located on the movement track of the lower pressure plate (413); The base (1) is provided with a placement bin (66), in which two calibration blocks (6) are placed, the calibration block (6) having an H-shaped appearance, the two side planes of the calibration block (6) are both defined as a first surface (61), the three surfaces of the calibration block (6) facing the base (1) are defined as two second surfaces (62) and a third surface (63), the two second surfaces (62) are located on the same horizontal plane, the back of the third surface (63) is defined as a fifth surface (65), the two backs of the two second surfaces (62) are both defined as a fourth surface (64), the two fourth surfaces (64) are located on the same horizontal plane, and the distance between the second surface (62) and the third surface (63) is smaller than the distance between the fourth surface (64) and the fifth surface (65); The control assembly (8) comprises an operation box (81), a display (82), an industrial computer (83), a gas control valve group (84), a position indicator light (85), a barcode scanner (86) and a button (87); the operation box (81), the barcode scanner (86) and the button (87) are all mounted on the outer wall of the protective frame (2); the display (82), the industrial computer (83), the gas control valve group (84) and the position indicator light (85) are all mounted inside the protective frame (2); the industrial computer (83) is electrically connected to the servo motor (41); The pneumatic control valve group (84) is electrically connected to the transposition cylinder (54) and the two displacement sensors (58); the display (82) is electrically connected to the operation box (81), the pressure sensor (416) and the two displacement sensors (58); the operation box (81) is electrically connected to the industrial computer (83), the pneumatic control valve group (84) and the display (82); the button (87) is electrically connected to the operation box (81); and two safety gratings (7) are installed on the protection frame (2); the two safety gratings (7) are electrically connected to the operation box (81).

2. A battery core thickness measuring instrument according to claim 1, characterized in that: Four supporting casters (11) are installed at the bottom of the base (1), and safety isolation doors (21) are respectively provided on the left and right sides and the rear side of the protection frame (2).

3. A battery core thickness measuring instrument according to claim 2, characterized in that: The outer wall of the slide (47) is connected to a movable shield (49), the upright column (3) is connected to a fixed shield (410), and the movable shield (49) is slidably connected to the fixed shield (410).

4. A battery core thickness measuring instrument according to claim 3, characterized in that: The lower pressing plate (413) and the lower supporting platform (56) are both made of marble, and the pole core (9) to be tested is placed on the lower supporting platform (56).

5. A battery core thickness measuring instrument according to claim 4, characterized in that: A transposition cylinder (54) is mounted on the base (1), a connecting seat (55) is connected to the lower support plate (52), an output end of the transposition cylinder (54) is connected to the connecting seat (55), and a cylinder is disposed inside the displacement sensor (58).

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