Automatic distance adjusting tool of formation and capacity grading equipment

Abstract

The invention discloses an automatic distance adjusting tool for formation and capacity grading equipment, which is used for adjusting the distance between probe modules in the capacity grading equipment, and comprises a tool cabinet body, the tool cabinet body is provided with a positioning module, a torque socket wrench assembly and a movable main board, the positioning module and the torque socket wrench assembly are both installed on the movable main board, and the movable main board is provided with a positioning module; the positioning module corresponds to a positioning hole in a probe module, and the positioning module is used for positioning the probe module; the transmission system is arranged in the tool cabinet body, the transmission system comprises a torque transmission device and a driving device, and the torque transmission device is connected with the torque socket spanner assembly; the guide mechanism is arranged in the tool cabinet body, and the driving device is connected with the movable main board through the guide mechanism and enables the movable main board to move in the tool cabinet body through the guide mechanism.

Description

Technical Field

[0001] This invention relates to the field of automated assembly tool technology, and more specifically to an automatic spacing adjustment fixture for a batching and filling equipment. Background Technology

[0002] With the explosive growth of the new energy vehicle and energy storage industries, the demand for lithium-ion batteries is showing a diversified development trend. Currently, mainstream power battery companies have more than 20 models in production, covering various capacity specifications from 80Ah to 320Ah, with single-cell electrode tab sizes varying by up to ±15mm. This multi-specification industry structure poses a severe challenge to the flexible production capabilities of downstream formation and capacity testing equipment. Traditional capacity testing equipment generally adopts a fixed probe group design. When dealing with batteries of different specifications, the probe spacing at each storage location must be physically adjusted manually, requiring two people to operate. Due to the limited operating space inside the equipment and the fact that operations on the RGV aisle side of the logistics line involve working at height, there are safety hazards.

[0003] Traditional probe spacing adjustment generally relies on manual operation. Operators need to enter the equipment and use wrenches and other tools to loosen, move, position, and re-tighten the locking screws of the probe modules one by one. The entire process is extremely time-consuming, causing long downtime for equipment changes and severely impacting the overall efficiency (OEE) of the production line. The precision of manual adjustment is difficult to guarantee, and the results of each operation are rarely consistent. Operators can only rely on experience and simple rulers for positioning, which leads to deviations in the repeated positioning results of the probe module spacing. This can easily cause poor contact or uneven pressure between the probes and the battery tabs, thus affecting the accuracy and stability of the formation and capacity test data. Summary of the Invention

[0004] In order to overcome the technical defects of low precision and long adjustment time of manual operation in the prior art, the present invention provides an automatic distance adjustment tooling for a batching and dispensing equipment.

[0005] To solve the above problems, the present invention is implemented according to the following technical solution:

[0006] The present invention provides an automatic spacing adjustment fixture for a capacity-forming device, used to adjust the spacing of probe modules in the capacity-forming device, comprising:

[0007] The tooling cabinet is equipped with a positioning module, a torque socket wrench assembly, and a movable main board. The positioning module and the torque socket wrench assembly are both mounted on the movable main board. The positioning module corresponds to the positioning hole on the probe module and is used to position the probe module.

[0008] A transmission system is located inside the tooling cabinet. The transmission system includes a torque transmission device and a drive device. The torque transmission device is connected to the torque socket wrench assembly.

[0009] A guiding mechanism is provided inside the tooling cabinet. The driving device is connected to the mobile motherboard through the guiding mechanism, and causes the mobile motherboard to move inside the tooling cabinet through the guiding mechanism.

[0010] Furthermore, the guiding mechanism includes:

[0011] A movable component is disposed on the two side frames of the tooling cabinet. The movable component includes a linear slide rail and a guide block. The movable main board is connected to the linear slide rail through the guide block.

[0012] The drive device includes an AC servo motor and a ball screw. The AC servo motor is connected to the ball screw, and a fixed seat connected to the mobile motherboard is sleeved on the ball screw.

[0013] Furthermore, the drive device also includes:

[0014] The detection guide rail is mounted on the base of the tooling cabinet;

[0015] A sensing element, which is mounted on the mounting base;

[0016] The detection guide rail is equipped with sensors at both ends. When the movable motherboard moves in the tooling cabinet, the sensing plate moves along the axial length of the detection guide rail and senses the moving distance of the movable motherboard in the tooling cabinet through the sensors at both ends of the detection guide rail.

[0017] Furthermore, the positioning module includes four sets of positioning mechanisms, which are located at the four corners of the mobile motherboard. Each positioning mechanism includes a synchronous motor, a positioning seat, a transmission shaft, a lifting shaft, and a positioning pin.

[0018] The positioning seat is fixedly connected to the bottom of the mobile motherboard. The synchronous motor is fixed to the positioning seat by bolts. The synchronous motor is connected to the transmission shaft by a gear system. The transmission shaft is vertically connected to the lifting shaft by staggered bevel teeth. The lifting shaft is connected to the positioning pin by a rack. The front end of the positioning pin is coaxially aligned with the positioning hole at the bottom of the probe module in the vertical direction and is inserted into it.

[0019] The positioning pins of the four positioning mechanisms achieve synchronous lifting and lowering motion through the synchronous motor.

[0020] Furthermore, the four positioning mechanisms are symmetrically arranged in a square at the four corners of the mobile motherboard. The four positioning mechanisms include a first positioning mechanism, a second positioning mechanism, a third positioning mechanism, and a fourth positioning mechanism. The synchronous motor is used to synchronously drive the first positioning mechanism, the second positioning mechanism, the third positioning mechanism, and the fourth positioning mechanism.

[0021] Furthermore, the drive shaft and lifting shaft of the four positioning mechanisms are each fitted with a connecting block for connecting the moving motherboard; the rack is equipped with a distance sensor.

[0022] Furthermore, the torque socket wrench assembly includes at least one set of socket wrenches, the top of which has a bolt fitting.

[0023] The probe module is provided with a probe support plate and a transverse sliding groove at its bottom. The transverse sliding groove is provided with a number of locking devices. The locking devices include locking screws and nuts. The locking screws pass through the probe support plate, and the nuts are sleeved on the locking screws.

[0024] The bolt sleeve is adapted to the nut, and the nut cooperates with the locking screw to lock or loosen the probe carrier plate;

[0025] When the nut is engaged with the locking screw and locked, the probe support plate is fixed on the transverse sliding groove;

[0026] When the nut is disengaged from the locking screw, the probe carrier plate can move on the transverse sliding groove.

[0027] Furthermore, when the positioning pin is coaxially aligned with and inserted into the positioning hole at the bottom of the probe module in the vertical direction, the bolt sleeve is fitted onto the nut of the locking screw, and the torque output of the torque socket wrench assembly is adjusted by the control system to achieve the locking or loosening of the nut.

[0028] Furthermore, the torque socket wrench assembly also includes:

[0029] A torque servo motor, which is used to synchronously drive a socket wrench;

[0030] A torque sensor, coaxially connected to the torque servo motor, is used to detect the torque of the socket wrench.

[0031] Furthermore, it also includes:

[0032] The control system includes a parameter control module and a control board. The control board is electrically connected to the AC servo motor, the torque servo motor, and the synchronous motor. The control board is used to control the output parameters of the AC servo motor, the torque servo motor, and the synchronous motor.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] This invention provides an automatic spacing adjustment fixture for a formation and capacity testing equipment. By integrating a positioning module and a torque socket wrench assembly onto a single moving mainboard, driven by a built-in transmission system and guide mechanism, this invention achieves fully automated execution of a series of actions, including probe module positioning, tightening / loosening of the locking device, translation, and re-locking. It replaces cumbersome manual operations, reducing changeover downtime from several hours to tens of minutes, thus improving equipment and production line efficiency. The positioning module precisely positions the probe modules, while the drive device and guide mechanism in the transmission system work together to move the moving mainboard within the fixture cabinet. Combined with the automatic locking / loosening function of the torque socket wrench assembly, changeover efficiency is improved, ensuring accurate probe module spacing and reliable connection after each changeover. This guarantees stable formation and capacity testing data and consistent product quality. Attached Figure Description

[0035] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0036] Figure 1 This is a three-dimensional schematic diagram of an automatic spacing adjustment fixture for a chemical composition and capacity device according to the present invention;

[0037] Figure 2 This is a schematic diagram of the internal structure of an automatic spacing adjustment fixture for a chemical composition and capacity device according to the present invention;

[0038] Figure 3 This is a schematic diagram of the internal structure of an automatic spacing adjustment fixture for a chemical composition and capacity device according to the present invention;

[0039] Figure 4 This is a schematic diagram of the positioning mechanism of an automatic distance adjustment fixture for a chemical mixing and dispensing device according to the present invention.

[0040] Figure 5 This is a schematic diagram of the positioning mechanism and transmission system of an automatic distance adjustment fixture for a chemical mixing and dispensing equipment according to the present invention.

[0041] Figure 6 This is a schematic diagram of the positioning module of an automatic distance adjustment fixture for a chemical composition and capacity setting device according to the present invention;

[0042] Figure 7 This is a schematic diagram of the drive device for an automatic spacing adjustment fixture of a chemical composition and capacity equipment according to the present invention;

[0043] Figure 8 This is a schematic diagram of the torque socket wrench assembly of an automatic distance adjustment tooling for a chemical mixing and dispensing device according to the present invention.

[0044] Figure 9 This is a schematic diagram of the automatic spacing adjustment fixture adapted to the capacity distribution equipment of the present invention;

[0045] Figure 10 This is a partially enlarged A-view of the automatic spacing adjustment fixture of a chemical mixing and dispensing device according to the present invention;

[0046] In the picture:

[0047] 10-Tooling cabinet, 11-Positioning module, 111-Positioning mechanism, 1110-Synchronous motor, 1111-Positioning seat, 1112-Drive shaft, 1113-Lifting shaft, 1114-Positioning pin, 1115-Gear system, 1116-Interlaced bevel gear, 1117-Rack, 1118-Connecting block, 12-Torque socket wrench assembly, 121-Socket wrench, 1211-Bolt socket, 122-Torque servo motor, 123-Torque sensor, 13-Moving motherboard;

[0048] 20-Transmission system, 21-Torque transmission device, 22-Drive device, 221-AC servo motor, 222-Ball screw, 223-Fixed base, 224-Detection guide rail, 225-Induction plate, 226-Sensor;

[0049] 30-Guide mechanism, 31-Moving component, 311-Linear slide rail, 312-Guide block;

[0050] 40 - Control system.

[0051] 100-Probe module, 101-Positioning hole, 102-Probe support plate, 103-Transverse sliding groove, 104-Locking device, 105-Locking screw, 106-Nut. Detailed Implementation

[0052] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0053] like Figures 1-10 As shown,

[0054] The present invention provides an automatic spacing adjustment fixture for a capacity-dispensing device, used to adjust the spacing of the probe modules 100 in the capacity-dispensing device, comprising:

[0055] The tooling cabinet 10 is provided with a positioning module 11, a torque socket wrench assembly 12 and a movable main board 13. The positioning module 11 and the torque socket wrench assembly 12 are both mounted on the movable main board 13. The positioning module 11 corresponds to the positioning hole 101 on the probe module 100 and is used to position the probe module 100.

[0056] A transmission system 20 is located inside the tooling cabinet 10. The transmission system 20 includes a torque transmission device 21 and a drive device 22. The torque transmission device 21 is connected to the torque socket wrench assembly 12.

[0057] A guide mechanism 30 is provided inside the tooling cabinet 10. The drive device 22 is connected to the mobile motherboard 13 through the guide mechanism 30, and causes the mobile motherboard 13 to move within the tooling cabinet 10 through the guide mechanism 30.

[0058] Tooling cabinet 10: In this embodiment, the tooling cabinet 10 is the base and frame of the overall equipment, typically welded from high-strength alloy steel or cast iron to ensure sufficient rigidity and stability. The cabinet interior forms a hollow working chamber to accommodate and protect other moving parts.

[0059] The movable motherboard 13 and the guide mechanism 30 are mounted on the inner walls of both sides inside the fixture cabinet 10. Specifically, they can be two high-precision linear guide rails, fixed horizontally and parallel to the inner walls. The movable motherboard 13 can optionally be a metal plate with high flatness (e.g., an aluminum alloy plate), with guide sliders corresponding to the linear guide rails mounted on both sides. Through the "rail-slider" cooperation, the movable motherboard 13 can reciprocate smoothly and precisely in only a single direction (e.g., the X-axis direction).

[0060] Drive unit 22: To drive the movable motherboard 13, drive unit 22 is installed at one end of the tooling cabinet 10. In this embodiment, drive unit 22 is preferably a transmission system consisting of an AC servo motor and a ball screw. The output shaft of the AC servo motor is connected to one end of the ball screw via a coupling. The ball screw nut is fixed to a connecting seat of the movable motherboard 13. When the AC servo motor rotates, the rotational motion is converted into high-precision linear motion of the movable motherboard 13 via the ball screw. The encoder built into the AC servo motor can control the position of the movable motherboard 13, ensuring its movement distance and positioning accuracy.

[0061] Component Layout: The movable mainboard 13 integrates two components that perform core tasks: a positioning module 11 and a torque socket wrench assembly 12. The positioning module 11, after the mainboard 13 reaches the target station, engages with the positioning holes 101 on the probe module 100 to be adjusted via positioning pins or blocks (in this embodiment, specifically positioning pins), achieving error-free alignment. The torque socket wrench assembly 12 is used to automatically loosen or tighten the bolts or nuts 106 on the probe module 100 used for locking the spacing.

[0062] Transmission system 20: Transmission system 20 is understood here as the collection of power sources for the entire device. As mentioned above, one part is the drive unit 22 for driving the moving main board 13. Another part is the torque transmission unit 21, which specifically provides power to the torque socket wrench assembly 12. This torque transmission unit 21 can be another independent torque servo motor, which transmits power to the torque socket wrench assembly 12 through synchronous belts, gear trains, etc., to achieve precise control of the tightening torque of the nut 106.

[0063] When it is necessary to adjust the probe module spacing by 100:

[0064] 1. The control system 40 first commands the drive device 22 to drive the moving motherboard 13 to the designated position.

[0065] 2. The positioning module 11 is activated and completes the positioning with the probe module 100.

[0066] 3. The torque transmission device 21 drives the torque socket wrench assembly 12 to loosen or tighten the nut 106, completing a fully automatic torque adjustment operation.

[0067] Furthermore, the guiding mechanism 30 includes:

[0068] The movable component 31 is disposed on the two side frames of the tooling cabinet 10. The movable component 31 includes a linear slide rail 311 and a guide block 312. The movable main board 13 is connected to the linear slide rail 311 through the guide block 312.

[0069] The drive device 22 includes an AC servo motor 221 and a ball screw 222. The AC servo motor 221 is connected to the ball screw 222, and a fixed seat 223 connected to the mobile motherboard 13 is sleeved on the ball screw 222.

[0070] In this embodiment, the guide mechanism 30 is used to ensure high precision and stability of the moving motherboard 13 during movement. It consists of moving components 31 installed on the inner walls of the left and right sides inside the tooling cabinet 10.

[0071] Specifically, each moving component 31 includes a linear guide rail 311 and at least one cooperating guide block 312. The linear guide rail 311 is bolted to the side frame of the fixture cabinet 10, and the two rails are kept parallel. The guide blocks 312 are correspondingly fixed on both sides of the bottom of the moving main board 13. The guide blocks 312 have integrated circulating balls or rollers inside, allowing them to slide on the track of the linear guide rail 311 with extremely low friction. The guide rail slider structure provides a stable, backlash-free linear motion reference for the moving main board 13, resisting lateral forces or torques that may be generated during movement.

[0072] The drive unit 22 is the power source and actuator for the movable motherboard 13 to achieve precise displacement. In this embodiment, the AC servo motor 221 is fixed to one end of the tooling cabinet 10 via a motor mount. The ball screw 222 is mounted inside the tooling cabinet 10 via bearing supports at both ends, with its axis parallel to the two linear guide rails 311. The output shaft of the AC servo motor 221 is directly connected to one end of the ball screw 222 via a flexible coupling.

[0073] A nut is fitted on the ball screw 222, and the nut is connected to the fixing seat 223, which is installed on the bottom center line of the movable main board 13.

[0074] In this embodiment, the AC servo motor 221 can be selected as model MS1H4-10B30CB-T331R-1, with the following specific advantages:

[0075] 1. This type of servo motor is typically equipped with a high-resolution absolute encoder (e.g., a 23-bit encoder). 23 bits means that each rotation of the motor can be resolved into 2^23 (approximately 8.38 million) pulses. When the rotary motion is converted into linear motion of the moving motherboard 13 via the ball screw 222, its linear positioning accuracy is high. For batching and capacity testing equipment requiring precise adjustment of the probe module 100 spacing, accuracy is crucial for ensuring product quality.

[0076] 2. The MS1H series is a high-performance servo motor with low rotor inertia and excellent acceleration and deceleration performance. This means the motor can achieve very rapid start-stop and speed switching. In actual operation, the movement time of the moving motherboard 13 between different workstations is greatly reduced, thereby shortening the cycle time of the entire automatic distance adjustment operation and improving the overall production efficiency of the equipment.

[0077] 3. Although the motor's rated power (typically 100W for this model) is not high, it has a very high peak torque output capability. This characteristic is especially important at startup, as it can overcome the static friction of the guide mechanism 30 and the ball screw 222, ensuring a smooth and vibration-free start-up of the moving main board 13.

[0078] The overall motion conversion process is as follows: When the control system issues a command, the rotational motion of the AC servo motor 221 is transmitted to the ball screw 222 via the coupling, causing it to rotate synchronously. Since the fixed base 223 and the moving main board 13 are constrained by the guide mechanism 30, they cannot rotate and can only move linearly along the axis of the ball screw 222. The rotational motion of the servo motor is thus converted into the linear displacement of the moving main board 13. By controlling the total number of rotations of the servo motor, the moving distance of the moving main board 13 can be controlled.

[0079] Furthermore, the drive device 22 also includes:

[0080] The detection guide rail 224 is mounted on the base of the tooling cabinet 10;

[0081] The sensing element 225 is mounted on the fixing base 223;

[0082] The detection guide rail 224 is equipped with sensors 226 at both ends. When the mobile motherboard 13 moves in the tooling cabinet 10, the sensing plate 225 moves in the axial direction of the detection guide rail 224 and senses the moving distance of the mobile motherboard 13 in the tooling cabinet 10 through the sensors 226 at both ends of the detection guide rail 224.

[0083] To calibrate and limit the travel distance of the drive unit 22, the drive unit 22 also includes an auxiliary position detection system.

[0084] Specifically, the auxiliary position detection system includes a detection guide rail 224, a sensing plate 225, and two sensors 226. The detection guide rail 224 is fixed to the base of the tooling cabinet 10, and its axis is parallel to the moving direction of the moving main board 13. The sensing plate 225 is fixed to a fixed base 223 that moves together with the moving main board 13. The two sensors 226 are respectively located at the two ends of the detection guide rail 224 along its length, and are used to detect whether the sensing plate 225 has reached the end position of its travel. In this embodiment, the sensors 226 can be inductive proximity switches.

[0085] The working process of this auxiliary position detection system is as follows:

[0086] During device initialization or origin return operation, the control system controls the AC servo motor 221 to drive the moving motherboard 13 to one end. When the sensing plate 225 enters the sensing range of one of the sensors 226, the state of the sensor 226 changes (e.g., from normally open to closed) and sends a trigger signal to the control system. Upon receiving this signal, the control system records the current encoder position reading of the AC servo motor 221 and calibrates it as the mechanical origin or reference point of that coordinate axis.

[0087] During normal operation, if the movement of the mobile motherboard 13 exceeds the software-defined travel range (i.e., soft limit) and continues to move towards the end of its travel range, the sensing plate 225 on it will trigger the sensor 226. The sensor 226 sends a hard limit signal to the control system 40. Upon receiving the hard limit signal, the control system 40 executes a preset shutdown procedure, for example, immediately stopping the output of drive commands to the AC servo motor 221, thereby stopping the movement of the mobile motherboard 13.

[0088] Furthermore, the positioning module 11 includes four sets of positioning mechanisms 111, which are located at the four corners of the mobile motherboard 13. Each positioning mechanism 111 includes a synchronous motor 1110, a positioning seat 1111, a transmission shaft 1112, a lifting shaft 1113, and a positioning pin 1114.

[0089] The positioning base 1111 is fixedly connected to the bottom of the mobile motherboard 13. The synchronous motor 1110 is fixed to the positioning base 1111 by bolts. The synchronous motor 1110 is connected to the transmission shaft 1112 through a gear train 1115. The transmission shaft 1112 is vertically connected to the lifting shaft 1113 through staggered bevel gears 1116. The lifting shaft 1113 is connected to the positioning pin 1114 through a rack 1117. The front end of the positioning pin 1114 is coaxially aligned with and inserted into the positioning hole 101 at the bottom of the probe module 100 in the vertical direction.

[0090] The positioning pins 1114 of the four sets of positioning mechanisms 111 are driven by the synchronous motor 1110 to achieve synchronous lifting and lowering movements.

[0091] The positioning module 11 consists of four sets of identical positioning mechanisms 111. These four sets of positioning mechanisms 111 are arranged in a rectangular array and are respectively located at the four corners of the moving motherboard 13. The purpose of this symmetrical layout is to apply a uniform and stable positioning force to the four corresponding corners of the probe module 100 during positioning, avoiding offset or rotation that may be caused by single-point positioning.

[0092] Detailed structure and transmission path of a single positioning mechanism 111: Since the structure and working principle of the four positioning mechanisms 111 are exactly the same, the following will take one of them as an example for detailed explanation. Each positioning mechanism 111 includes a synchronous motor 1110, a positioning seat 1111, a transmission shaft 1112, a lifting shaft 1113, and a positioning pin 1114.

[0093] Mounting base: Positioning base 1111 serves as the mounting base for the entire mechanism and is securely fixed to the bottom of the movable main board 13 by means of bolts or the like.

[0094] Power source: Synchronous motor 1110 is fixed on positioning seat 1111, serving as the power source for driving the movement of the entire mechanism.

[0095] First-stage transmission (speed reduction and transmission): The output shaft of the synchronous motor 1110 is connected to a horizontally positioned drive shaft 1112 via a gear train 1115. This gear train 1115 can be one or more sets of reduction gears, used to reduce speed and increase torque. The drive shaft 1112 is mounted on a positioning seat 1111 via bearings and can rotate horizontally about its own axis.

[0096] Second-stage transmission (90-degree rotation): At the end of the drive shaft 1112, a driving staggered bevel gear 1116 is fixed. This driving bevel gear meshes with a driven bevel gear at the top of a vertically positioned lifting shaft 1113. Through this pair of orthogonal bevel gears, the horizontal rotational motion of the drive shaft 1112 is converted into the vertical rotational motion of the lifting shaft 1113.

[0097] Third-stage transmission (rotation to linear): To convert the rotational motion of the lifting shaft 1113 into the linear lifting motion of the positioning pin 1114, this embodiment employs a rack and pinion transmission. Specifically, a small gear is fixed on the lifting shaft 1113, which meshes with a vertically positioned rack 1117. The rack 1117 is fixedly connected to the rear end of the positioning pin 1114. When the lifting shaft 1113 rotates, the small gear drives the rack 1117, thereby causing the positioning pin 1114 to perform linear lifting motion along the vertical direction (Z-axis).

[0098] The front end of the locating pin 1114 is typically machined with a conical or arc-shaped guide chamfer to facilitate its smooth insertion into the locating hole 101 at the bottom of the probe module 100. In design, the axis of the locating pin 1114 is coaxially aligned with the axis of the locating hole 101 of the probe module 100 in the vertical direction.

[0099] Synchronization Implementation: The four synchronous motors 1110 in the four sets of positioning mechanisms 111 are electrically connected in parallel or via a bus to the control system 40. The control system ensures that the rotation angle, speed, and start / stop times of the four synchronous motors 1110 are completely consistent by issuing the same drive commands (e.g., the same number and frequency of pulses) to this channel. Thus, through the aforementioned mechanical transmission chain, precise synchronization of the displacement and speed of the four positioning pins 1114 during the lifting process is ultimately achieved.

[0100] During the positioning operation, the control system drives four synchronous motors 1110 to operate synchronously, which in turn drives four positioning pins 1114 to rise simultaneously and accurately insert them into the positioning holes 101 of the probe module 100, thereby completing the locking of the probe module 100.

[0101] Furthermore, the four sets of positioning mechanisms 111 are symmetrically arranged in a square at the four corners of the mobile motherboard 13. The four sets of positioning mechanisms 111 include a first positioning mechanism 111, a second positioning mechanism 111, a third positioning mechanism 111, and a fourth positioning mechanism 111. The synchronous motor 1110 is used to synchronously drive the first positioning mechanism 111, the second positioning mechanism 111, the third positioning mechanism 111, and the fourth positioning mechanism 111.

[0102] In the embodiments of the present invention, the layout and driving relationship of the four sets of positioning mechanisms 111 are further defined and explained.

[0103] For ease of description, the four sets of positioning mechanisms 111 with identical structures are named the first positioning mechanism, the second positioning mechanism, the third positioning mechanism, and the fourth positioning mechanism, respectively, according to their positions on the mobile motherboard 13.

[0104] These four positioning mechanisms are arranged symmetrically in a square (or rectangular) array around the geometric center of the mobile motherboard 13, at the four corners of the mobile motherboard 13.

[0105] The engineering purpose of this square symmetrical layout is that when the positioning pins 1114 of the four positioning mechanisms rise simultaneously and insert into the corresponding positioning holes 101 of the probe module 100, a coplanar positioning force of equal magnitude and direction can be formed at the four corner points of the probe module 100. This effectively balances all forces acting on the probe module 100, and can prevent the probe module 100 from tilting, warping, or twisting due to uneven force during positioning and locking. This layout ensures the flatness and high stability of the probe module 100 after positioning.

[0106] Further explanation regarding synchronous drive: The first, second, third, and fourth positioning mechanisms are driven by synchronous motors 1110. Specifically, a high-power synchronous motor 1110 can simultaneously drive all four mechanisms through a closed-loop mechanical transmission system (such as a synchronous belt pulley system); or, more commonly, four independent synchronous motors 1110 are electrically driven by the same controller sending identical drive signals to drive the four mechanisms respectively. Regardless of the method used, the core principle is to ensure that the actions of the four sets of mechanisms (i.e., the raising and lowering of the positioning pins) are completely consistent in time, speed, and displacement, achieving synchronization.

[0107] Furthermore, the transmission shaft 1112 and lifting shaft 1113 of the four positioning mechanisms 111 are each fitted with a connecting block 1118 for connecting the moving motherboard; the rack 1117 is equipped with a distance sensor.

[0108] To ensure the stability and transmission accuracy of the drive shaft 1112 (horizontally set) and lifting shaft 1113 (vertically set) inside the positioning mechanism 111 during load bearing and high-speed rotation, both ends or key support positions are supported by rolling bearings (such as deep groove ball bearings).

[0109] These bearings are mounted within specially designed connecting blocks. These connecting blocks can also be understood as bearing housings or support structures integrated into the positioning base 1111. These connecting blocks provide a solid and precise mounting and support reference for the entire drive chain, ensuring the accuracy of meshing of components such as gears and bevel gears, and are ultimately fixed to the movable main plate 13.

[0110] In order to monitor the vertical lifting position of the positioning pin 1114 in real time, in addition to indirect calculation through the encoder of the synchronous motor 1110, this embodiment also adds a distance sensor system on the rack 1117.

[0111] In a preferred embodiment, the distance sensor system may employ a linear optical scale or a magnetic scale. Specifically, the body of the scale (e.g., a glass scale with precision optical engravings or a magnetic strip coated with magnetic material) is mounted on the side of the rack 1117 or on a component rigidly connected to and moving synchronously with the rack 1117. Correspondingly, a reading head is mounted at a fixed position on the positioning seat 1111. As the rack 1117 moves up and down with the positioning pin 1114, the reading head reads the position information on the scale in real time and non-contactly, converting it into high-precision displacement data and outputting it to the control system 40.

[0112] The control system can obtain the direct measurement value of the final linear displacement of the positioning pin 1114, eliminating the cumulative error that may be caused by gear backlash, transmission wear, etc.

[0113] It can be used to confirm whether the locating pin 1114 has been fully inserted to the specified depth or has been fully retracted to the safe position.

[0114] By comparing the commanded displacement issued by the synchronous motor 1110 with the actual displacement fed back by the distance sensor, it can be determined whether there are mechanical faults such as slippage or jamming in the transmission system.

[0115] Furthermore, the torque socket wrench assembly 12 includes at least one set of socket wrenches 121, the top of which has a bolt socket portion 1211;

[0116] The probe module 100 has a probe support plate 102 and a transverse sliding groove 103 at its bottom. The transverse sliding groove 103 is provided with a plurality of locking devices 104. Each locking device 104 includes a locking screw 105 and a nut 106. The locking screw 105 passes through the probe support plate 102, and the nut 106 is sleeved on the locking screw 105.

[0117] The bolt sleeve 1211 is adapted to the nut 106, and the nut 106 cooperates with the locking screw 105 to lock or loosen the probe carrier plate 102.

[0118] When the nut 106 is engaged and locked with the locking screw 105, the probe support plate 102 is fixed on the transverse sliding groove 103;

[0119] When the nut 106 is disengaged from the locking screw 105, the probe carrier plate 102 can move on the transverse slide groove 103.

[0120] In this embodiment, the probe module 100 to be adjusted is provided with one or more probe carrier plates 102 that can move on the transverse slide 103. This design allows operators or automated equipment to adjust the lateral relative position of the probes.

[0121] To secure the probe carrier plate 102 in place after adjustment, each probe carrier plate 102 is equipped with one or more locking devices 104. In this embodiment, the locking device 104 employs a standard bolt and nut fastening structure. Specifically, the shank of a locking screw 105 passes through a pre-set through hole in the probe carrier plate 102 from top to bottom, with its threaded end protruding from the bottom of the carrier plate. A nut 106 (e.g., a standard hexagonal nut 106) is screwed onto the protruding end of the locking screw 105.

[0122] The working principle of the locking device 104 is as follows:

[0123] Locked State: When the nut 106 is tightened by rotating it in the specified direction, the internal thread of the nut 106 engages with the external thread of the locking screw 105, causing the heads of the nut 106 and the locking screw 105 to jointly apply a strong axial clamping force to the probe carrier plate 102 between them. This clamping force, through friction, firmly fixes the probe carrier plate 102 in the current position of the transverse slide groove 103, preventing it from moving.

[0124] Loose state: When the nut 106 is loosened by rotating it in the opposite direction, the clamping force is released. At this time, the probe carrier plate 102 regains its ability to slide and adjust on the transverse slide groove 103.

[0125] II. Corresponding Structure of Torque Socket Wrench Assembly 12

[0126] Corresponding to the locking device 104 on the probe module 100, the torque socket wrench assembly 12 is mounted on the movable main board 13 of this tooling. This assembly includes at least one socket wrench 121, the number and spatial arrangement of which precisely correspond to the number and arrangement of the locking devices 104 on the probe module 100.

[0127] The working end of the socket wrench 121, i.e., its top, is provided with a bolt fitting 1211. The internal shape of the bolt fitting 1211 (e.g., internal hexagonal or internal star-shaped) is perfectly adapted to the shape of the nut 106 of the locking device 104 on the probe module 100. This adaptation ensures that during operation, the bolt fitting 1211 can be fitted onto the nut 106 to effectively transmit torque without slippage.

[0128] In the entire automated distance adjustment process, when the moving motherboard 13 transports the torque socket wrench assembly 12 to the working station of the probe module 100 and the positioning module 11 completes the precise positioning, each bolt socket 1211 will be coaxially aligned with the corresponding nut 106.

[0129] Furthermore, when the positioning pin 1114 is coaxially aligned with and inserted into the positioning hole 101 at the bottom of the probe module 100 in the vertical direction, the bolt sleeve 1211 is sleeved on the nut 106 of the locking screw 105, and the torque output of the torque socket wrench assembly 12 is adjusted by the control system 40 to achieve the locking or loosening of the nut 106.

[0130] The relative spatial relationship (X, Y coordinate offset) between the axial position of the positioning pin 1114 mounted on the mobile motherboard 13 and the axial position of the bolt sleeve 1211 is precisely calculated and set in advance based on the relative position of the center of the positioning hole 101 and the center of the nut 106 on the probe module 100. When the positioning pin 1114 is aligned with the positioning hole 101, the bolt sleeve 1211 will also be aligned with the corresponding nut 106.

[0131] Under the command of the control system 40, the movable motherboard 13, carrying the positioning module 11 and the torque socket wrench assembly 12, moves to a position below the probe module 100 to be operated. Once it reaches the preset target position, the control system 40 commands the positioning module 11 to begin performing the positioning action.

[0132] The positioning module 11 drives its four positioning mechanisms 111, causing the four positioning pins 1114 to move vertically upwards synchronously. When the front guide of the positioning pin 1114 contacts the positioning hole 101 at the bottom of the probe module 100 and begins to insert, the planar position (XY coordinate) of the moving main board 13 relative to the probe module 100 is locked. In this state, due to the above design premise, the bolt sleeve 1211 of the torque socket wrench assembly 12 mounted on the same moving main board 13 also synchronously and automatically achieves coaxial alignment in the vertical direction with the nut 106 of the locking screw 105 on the probe module 100, and is sleeved on the nut 106. Thus, the positioning and preparation of the tooling are completed simultaneously in one lifting stroke.

[0133] After confirming that the locating pin 1114 has been fully inserted (e.g., by determining the position through a sensor or motor encoder), the control system 40 will issue a work command to the torque socket wrench assembly 12 according to the preset process requirements.

[0134] For the tightening operation, the control system 40 sets a target torque value (e.g., 5 N·m) and rotation direction (e.g., clockwise), and drives the torque socket wrench assembly 12 to start rotating. The torque sensor inside the assembly monitors the output torque in real time, and when the target value is reached, the motor stops immediately, thus tightening the nut 106.

[0135] If the operation is to loosen the nut, the control system 40 will drive the torque socket wrench assembly 12 to rotate in the opposite direction (e.g., counterclockwise) by a specified angle or until the torque is less than a certain threshold, to ensure that the nut 106 is fully loosened.

[0136] After the torque adjustment operation is completed, the positioning pin 1114 moves vertically downward and exits from the positioning hole 101, releasing the positioning of the probe module 100. Subsequently, the moving motherboard 13 can move to the next station or return to the origin.

[0137] Furthermore, the torque socket wrench assembly 12 also includes:

[0138] A torque servo motor 122 is used to synchronously drive the socket wrench 121;

[0139] Torque sensor 226123, which is coaxially connected to torque servo motor 122, is used to detect the torque of socket wrench 121.

[0140] The power source for the torque socket wrench assembly 12 is one or more torque servo motors 122.

[0141] In one embodiment, if multiple socket wrenches 121 need to be driven simultaneously, a high-power torque servo motor 122 can be used to distribute and synchronously transmit power to each socket wrench 121 through a synchronous transmission mechanism (e.g., a system consisting of a synchronous belt and a synchronous pulley).

[0142] In another preferred embodiment, to achieve independent control and greater flexibility, each socket wrench 121 is driven by an independent torque servo motor 122. In this case, "synchronous drive" is achieved by the control system 40 sending the same motion control command to all torque servo motors 122.

[0143] By using a servo motor as the power source, its output speed, rotation angle, and torque can be precisely programmed and controlled.

[0144] Torque detection and feedback unit: In order to achieve precise control of the locking torque, the torque socket wrench assembly 12 also integrates a torque sensor 123.

[0145] The torque sensor 123 is mounted coaxially, meaning it is physically connected in series in the power transmission path. Specifically, the output shaft of the torque servo motor 122 is connected to the input end of the torque sensor 123, while the output end of the torque sensor 123 is connected to the transmission mechanism that drives the socket wrench 121. This inline connection ensures that the torque sensor 123 can detect the actual torque value transmitted through it and ultimately applied to the socket wrench 121 in real time without attenuation, rather than an estimated value from the motor output.

[0146] Workflow:

[0147] 1. The control system 40 sets a target torque value (e.g., 5.0 N·m) and rotation direction according to process requirements.

[0148] 2. The control system 40 commands the torque servo motor 122 to start rotating in the specified direction, driving the socket wrench 121 to tighten the nut 106.

[0149] 3. During rotation, the torque sensor 123 continuously measures the current output torque and feeds back the real-time torque data to the control system 40 in the form of an electrical signal.

[0150] 4. The control system 40 continuously compares the received real-time torque value with the preset target torque value.

[0151] 5. When the real-time torque value is equal to or slightly greater than the target torque value, the control system 40 immediately stops sending drive commands to the torque servo motor 122, and the motor then stops rotating.

[0152] Furthermore, it also includes:

[0153] The control system 40 includes a parameter control module and a control board. The control board is electrically connected to the AC servo motor 221, the torque servo motor 122, and the synchronous motor 1110. The control board is used to control the output parameters of the AC servo motor 221, the torque servo motor 122, and the synchronous motor 1110.

[0154] Control system 40 is an automation control platform based on an industrial computer (IPC) or programmable logic controller (PLC). The system mainly consists of two parts: a parameter control module at the software level and a control board at the hardware level.

[0155] The parameter control module is a software component of the control system 40. Its physical carrier is typically a touchscreen human-machine interface (HMI) or a dedicated control program installed on a host computer. Operators can perform the following operations through this module:

[0156] 1. Process Parameter Setting: Create, edit, and store process recipes for different models of probe modules 100. These parameters include, but are not limited to: the target position coordinates of the moving motherboard 13, the moving speed, the lifting stroke of the positioning pin 1114, and the precise tightening torque value and loosening angle that the torque socket wrench assembly 12 needs to apply.

[0157] 2. Manual Debugging: Provides a manual operation interface, allowing technicians to perform individual, jogging control of the AC servo motor 221, torque servo motor 122 and synchronous motor 1110, so as to facilitate the installation, debugging and maintenance of the equipment.

[0158] 3. Status monitoring and alarm: Real-time display of the operating status, current coordinates, output torque and other information of each component of the equipment, and detailed alarm information and handling suggestions when the equipment fails.

[0159] 4. Program control: Provides buttons for start, pause, emergency stop, and reset to control the execution of the fully automatic distance adjustment program.

[0160] The control board is the core hardware execution unit of the control system 40. In a PLC-based system, the control board is the main CPU module of the PLC and its extended motion control modules or high-speed pulse output modules; in an IPC-based system, it can be a dedicated multi-axis motion control card.

[0161] The control board is connected to the AC servo motor 221, the torque servo motor 122, and the synchronous motor 1110 via shielded cables.

[0162] The core function of the control board is to generate and send specific control signals to each motor driver according to a preset logic program, based on the process parameters and operating instructions obtained from the parameter control module, in order to control the output parameters of each motor. The specific control logic is as follows:

[0163] For AC servo motor 221: the control board sends pulse and direction signals to its driver to control its rotation angle, speed and acceleration / deceleration curve, thereby controlling the linear displacement of the moving motherboard 13.

[0164] For synchronous motor 1110: the control board sends fully synchronized pulse commands to its multiple drivers to ensure that the four motors start synchronously, rotate at the same speed, and stop synchronously, so as to drive the positioning pin 1114 to achieve synchronous lifting and lowering.

[0165] For the torque servo motor 122: While sending rotation commands, the control board receives torque feedback signals from the torque sensor 123 in real time. When the feedback torque value reaches the target value set in the parameter control module, the control board immediately stops sending commands, completing torque control.

[0166] The working principle of the automatic spacing adjustment fixture of the chemical composition and capacity preparation equipment of the present invention is as follows:

[0167] The overall workflow of the automatic distance adjustment fixture of the present invention is automatically executed according to a preset program under the coordination of a centralized control system 40. The principle of a complete work cycle is as follows:

[0168] System Initialization and Preparation: After the equipment is powered on, the operator selects or sets the process formula (including target spacing, locking torque, etc.) of the target probe module 100 through the human-machine interface of the parameter control module. After starting the initialization program, the control system 40 first performs the origin return operation, commanding the AC servo motor 221 to drive the moving motherboard 13 until the sensing plate 225 triggers the sensor 226, thereby calibrating the origin of the mechanical coordinate system to ensure the absolute accuracy of subsequent positioning.

[0169] Horizontal precision positioning: After the automatic process starts, the control system 40 drives the AC servo motor 221 according to the coordinate parameters in the process formula. The motor converts the rotational motion into linear motion through the ball screw 222, which drives the moving main board 13 to move quickly and smoothly to the designated position below the target probe module 100 on the guide mechanism 30.

[0170] Vertical Positioning: After the moving motherboard 13 reaches the horizontal position, the control system 40 immediately commands the four synchronous motors 1110 in the positioning module 11 to start synchronously. The motors, through their respective transmission chains (including gear trains, interlaced bevel gears, and rack and pinion mechanisms), drive the four positioning pins 1114 to rise vertically synchronously and insert into the positioning holes 101 at the bottom of the probe module 100. This action completes the final locking of the planar position between the tooling and the probe module 100. During this process, the bolt socket 1211 of the torque socket wrench assembly 12 also synchronously engages with the nut 106 to be tightened.

[0171] Torque operation (locking / unlocking): When the positioning is completed, the control system 40 drives the torque servo motor 122 to perform torque operation according to the process flow.

[0172] Loosen: If the current step is to loosen nut 106 to adjust the spacing, the motor will rotate in the opposite direction by a preset angle or number of turns to release the locking of probe carrier plate 102.

[0173] Locking: After the probe carrier plate 102 is adjusted into place, the motor rotates in the specified direction. The torque sensor 123 monitors the output torque in real time and feeds it back to the control system 40. Once the preset torque value is reached, the motor stops immediately, completing the precise torque locking of the nut 106.

[0174] Reset and Cycle: After the torque operation is completed, the synchronous motor 1110 reverses, causing the positioning pin 1114 to descend and disengage from the positioning hole 101. This completes one full-automatic distance adjustment operation. Subsequently, the moving mainboard 13 can move to the next station to repeat the above process, or return to the origin to await new instructions.

[0175] The structure of the automatic spacing adjustment fixture for the chemical composition and capacity equipment described in this invention is the same as that in the prior art.

[0176] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An automatic spacing adjustment fixture for a capacity-dispensing device, used to adjust the spacing of probe modules in the capacity-dispensing device, characterized in that, include: The tooling cabinet is equipped with a positioning module, a torque socket wrench assembly, and a movable main board. The positioning module and the torque socket wrench assembly are both mounted on the movable main board. The positioning module corresponds to the positioning hole on the probe module and is used to position the probe module. A transmission system is located inside the tooling cabinet. The transmission system includes a torque transmission device and a drive device. The torque transmission device is connected to the torque socket wrench assembly. A guiding mechanism is provided inside the tooling cabinet. The driving device is connected to the mobile motherboard through the guiding mechanism, and causes the mobile motherboard to move inside the tooling cabinet through the guiding mechanism.

2. The automatic spacing adjustment fixture for a chemical composition and capacity testing device according to claim 1, characterized in that, The guiding mechanism includes: A movable component is disposed on the two side frames of the tooling cabinet. The movable component includes a linear slide rail and a guide block. The movable main board is connected to the linear slide rail through the guide block. The drive device includes an AC servo motor and a ball screw. The AC servo motor is connected to the ball screw, and a fixed seat connected to the mobile motherboard is sleeved on the ball screw.

3. The automatic spacing adjustment fixture for a chemical composition and capacity testing device according to claim 2, characterized in that, The drive device further includes: The detection guide rail is mounted on the base of the tooling cabinet; A sensing element, which is mounted on the mounting base; The detection guide rail is equipped with sensors at both ends. When the movable motherboard moves in the tooling cabinet, the sensing plate moves along the axial length of the detection guide rail and senses the moving distance of the movable motherboard in the tooling cabinet through the sensors at both ends of the detection guide rail.

4. The automatic spacing adjustment fixture for a chemical composition and capacity testing device according to claim 1, characterized in that: The positioning module includes four sets of positioning mechanisms, which are located at the four corners of the mobile motherboard. Each positioning mechanism includes a synchronous motor, a positioning seat, a transmission shaft, a lifting shaft, and a positioning pin. The positioning seat is fixedly connected to the bottom of the mobile motherboard. The synchronous motor is fixed to the positioning seat by bolts. The synchronous motor is connected to the transmission shaft by a gear system. The transmission shaft is vertically connected to the lifting shaft by staggered bevel teeth. The lifting shaft is connected to the positioning pin by a rack. The front end of the positioning pin is coaxially aligned with the positioning hole at the bottom of the probe module in the vertical direction and is inserted into it. The positioning pins of the four positioning mechanisms achieve synchronous lifting and lowering motion through the synchronous motor.

5. The automatic spacing adjustment fixture for a chemical composition and capacity testing device according to claim 4, characterized in that: The four positioning mechanisms are symmetrically arranged in a square at the four corners of the mobile motherboard. The four positioning mechanisms include a first positioning mechanism, a second positioning mechanism, a third positioning mechanism, and a fourth positioning mechanism. The synchronous motor is used to synchronously drive the first positioning mechanism, the second positioning mechanism, the third positioning mechanism, and the fourth positioning mechanism.

6. The automatic spacing adjustment fixture for a chemical composition and capacity testing device according to claim 4, characterized in that: The drive shafts and lifting shafts of the four positioning mechanisms are each fitted with connecting blocks for connecting the moving motherboard; the rack is equipped with a distance sensor.

7. The automatic spacing adjustment fixture for a chemical composition and capacity testing device according to claim 1, characterized in that: The torque socket wrench assembly includes at least one set of socket wrenches, the top of which has a bolt fitting portion; The probe module is provided with a probe support plate and a transverse sliding groove at its bottom. The transverse sliding groove is provided with a number of locking devices. The locking devices include locking screws and nuts. The locking screws pass through the probe support plate, and the nuts are sleeved on the locking screws. The bolt sleeve is adapted to the nut, and the nut cooperates with the locking screw to lock or loosen the probe carrier plate; When the nut is engaged with the locking screw and locked, the probe support plate is fixed on the transverse sliding groove; When the nut is disengaged from the locking screw, the probe carrier plate can move on the transverse sliding groove.

8. An automatic spacing adjustment fixture for a chemical composition and capacity testing device according to claim 4 or 7, characterized in that: When the positioning pin is coaxially aligned with the positioning hole at the bottom of the probe module in the vertical direction and is inserted, the bolt sleeve is fitted onto the nut of the locking screw, and the torque output of the torque socket wrench assembly is adjusted by the control system to achieve the locking or loosening of the nut.

9. The automatic spacing adjustment fixture for a chemical composition and capacity testing device according to claim 7, characterized in that: The torque socket wrench assembly also includes: A torque servo motor, which is used to synchronously drive a socket wrench; A torque sensor, coaxially connected to the torque servo motor, is used to detect the torque of the socket wrench.

10. The automatic spacing adjustment fixture for a chemical composition and capacity testing device according to claim 1, characterized in that, Also includes: The control system includes a parameter control module and a control board. The control board is electrically connected to the AC servo motor, the torque servo motor, and the synchronous motor. The control board is used to control the output parameters of the AC servo motor, the torque servo motor, and the synchronous motor.

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