Automatic PUR glue dispensing device
By introducing an intermittent dispensing mechanism into the automatic PUR adhesive dispensing device, the problems of poor flowability and blockage caused by PUR adhesive curing at the dispensing port were solved, thereby achieving stability in dispensing quality and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHEJIANG OMEGA INTELLIGENT EQUIPMENT CO LTD
- Filing Date
- 2026-04-07
- Publication Date
- 2026-05-12
AI Technical Summary
Existing dispensing devices suffer from partial curing of PUR adhesive at the dispensing nozzle due to prolonged exposure to air, resulting in poor adhesive flow, uneven dispensing, and even nozzle blockage, which affects the stability of dispensing quality and reduces production efficiency.
An automatic dispensing device for PUR adhesive was designed, comprising a feeding mechanism, an automatic dispensing mechanism, and an intermittent dispensing mechanism. The intermittent dispensing mechanism performs intermittent dispensing at preset time intervals during idle states, maintaining the freshness and fluidity of the adhesive and preventing curing at the dispensing nozzle.
It significantly improves the stability of dispensing quality, reduces the frequency of manual cleaning, and increases production efficiency and the reliability of automated equipment operation.
Smart Images
Figure CN122006969A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery cell dispensing technology, and in particular to an automatic PUR adhesive dispensing device. Background Technology
[0002] In the manufacturing process of lithium-ion batteries or battery packs, dispensing and coating are essential processes. PUR adhesive is commonly used. The curing method of PUR adhesive is that the NCO groups inside react with water vapor to generate NH2 active groups. The NH2 active groups react with the remaining NCO groups, causing the PUR to cross-link and cure.
[0003] As the size and quality control of battery cells in battery packs becomes increasingly stringent, the control over the precision, amount, and uniformity of dispensing also becomes more demanding. Existing dispensing devices typically only possess basic feeding and dispensing functions, using translational and lifting modules to drive the dispensing module to perform the dispensing operation on the positioned battery cells. However, in actual continuous production, during standby or process changeover phases, the PUR adhesive at the dispensing nozzle is prone to partial curing due to prolonged exposure to air, leading to poor adhesive flow, uneven dispensing, and even nozzle blockage. This not only affects the stability of dispensing quality but also requires frequent manual intervention for cleaning, reducing production efficiency. Summary of the Invention
[0004] The purpose of this application is to provide an automatic PUR adhesive dispensing device, which aims to improve the problem that existing dispensing devices are prone to partial curing of PUR adhesive at the dispensing nozzle due to prolonged exposure to air, resulting in poor adhesive flow, poor dispensing, and even nozzle blockage, which in turn affects the stability of dispensing quality and reduces production efficiency.
[0005] To achieve this objective, embodiments of this application provide an automatic PUR adhesive dispensing device. The automatic PUR adhesive dispensing device includes a feeding mechanism, an automatic dispensing mechanism, and an intermittent discharging mechanism. The device further includes a loading station, a dispensing station, and a unloading station. The feeding mechanism includes a cell carrier, a carrier platform for supporting and positioning the cell carrier, and an X-axis translation module for driving the carrier platform to move back and forth between the loading station, the dispensing station, and the unloading station. The cell carrier is configured to support and position the cell to be dispensed. The automatic dispensing mechanism includes a dispensing module, a Z-axis lifting module for driving the dispensing module to rise and fall, and a first Y-axis translation module for driving the dispensing module to translate. When the dispensing module is set to work, and the carrier platform carries the battery cell carrier to the dispensing station, the Z-axis lifting module, the first Y-axis translation module, and the X-axis translation module work together to automatically dispense the battery cell to be dispensed on the battery cell carrier. The intermittent glue discharge mechanism includes a glue discharge box, which has a working position located at the dispensing station and an idle position away from the dispensing station. The dispensing module is also configured to perform intermittent glue discharge operations on the glue discharge box at preset time intervals when the glue discharge box is switched to the working position in the idle state.
[0006] Optionally, in some embodiments of this application, the intermittent glue discharge mechanism further includes a second Y-axis translation module that drives the glue discharge box to switch back and forth between the idle position and the working position.
[0007] Optionally, in some embodiments of this application, the intermittent glue discharge mechanism further includes a glue discharge status detection module disposed above the glue discharge box. The glue discharge status detection module is configured to detect the glue liquid state of the current discharge after the dispensing module completes each intermittent glue discharge, so as to generate a corresponding glue discharge feedback signal. The dispensing module is also configured to adjust the dispensing time interval for the next intermittent dispensing based on the dispensing feedback signal.
[0008] Optionally, in some embodiments of this application, the intermittent glue discharge mechanism further includes a glue quantity detection sensor disposed in the glue discharge box. The glue quantity detection sensor is configured to detect the accumulated glue quantity in the glue discharge box in real time and output a glue discharge and cleaning reminder signal when the accumulated glue quantity reaches a preset glue quantity threshold.
[0009] Optionally, in some embodiments of this application, the upper surface of the battery cell carrier is respectively provided with a first positioning clamp and a second positioning clamp, and the first positioning clamp and the second positioning clamp are arranged opposite to each other to form a battery cell positioning groove between the first positioning clamp and the second positioning clamp, the battery cell positioning groove being configured to clamp and fix the battery cell to be glued.
[0010] Optionally, in some embodiments of this application, at least one of the first positioning clamp and the second positioning clamp is movably configured so that the distance between the first positioning clamp and the second positioning clamp is adjustable.
[0011] Optionally, in some embodiments of this application, the battery cell carrier is a rectangular structure, and the upper surface of the carrier platform is respectively provided with an L-shaped fixed block and a movable block with an L-shaped slot. The L-shaped fixed block and the L-shaped slot are arranged diagonally, so that when the movable block moves diagonally, an adjustable carrier positioning groove is formed between the L-shaped fixed block and the L-shaped slot. The carrier positioning groove is configured to clamp and fix the battery cell carrier.
[0012] Optionally, in some embodiments of this application, the upper surface of the carrier platform is further provided with a positioning detection sensor, which is configured to detect whether the carrier positioning slot clamps and fixes the battery cell carrier. The X-axis translation module is configured to move the carrier platform from the loading station to the dispensing station when the positioning sensor detects that the carrier positioning slot is clamping and fixing the battery cell carrier.
[0013] Optionally, in some embodiments of this application, the carrier platform is further equipped with a weighing sensor, which is configured to obtain the current actual amount of glue dispensing in real time when the dispensing module performs automatic dispensing operation on the battery cell carrier. The dispensing module is also configured to automatically adjust the current dispensing speed based on the difference between the actual dispensing amount and the preset dispensing amount.
[0014] Optionally, in some embodiments of this application, the automatic dispensing mechanism further includes a vision positioning module disposed above the dispensing station. The vision positioning module is configured to acquire a dispensing quality image of the battery cell to be dispensed after the dispensing module completes the initial dispensing operation on the current battery cell to be dispensed. The dispensing module is also configured to perform a secondary dispensing operation on the current battery cell to be dispensed based on the comparison result between the dispensing quality image and a preset target dispensing quality image, in cooperation with the Z-axis lifting module, the first Y-axis translation module, and the X-axis translation module.
[0015] The automatic PUR adhesive dispensing device provided in this application embodiment, through the aforementioned structural configuration, incorporates an intermittent dispensing mechanism and configures the dispensing cartridge to switch between a working position and an idle position. This allows the dispensing module to intermittently dispense adhesive from the cartridge at preset time intervals during idle states, periodically dispensing a small amount of adhesive from the front end. This maintains the freshness and fluidity of the adhesive at the dispensing module's outlet, effectively preventing problems such as reduced adhesive fluidity, poor dispensing, and nozzle blockage caused by prolonged exposure of the PUR adhesive to air and partial curing. This significantly improves the stability of dispensing quality, reduces manual cleaning frequency and downtime, and increases continuous production efficiency and the reliability of automated equipment operation. Therefore, this technical solution effectively addresses the problem in existing dispensing devices where prolonged exposure of the PUR adhesive to air and partial curing at the outlet leads to reduced adhesive fluidity, poor dispensing, and even nozzle blockage, thus affecting dispensing quality stability and reducing production efficiency. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] The structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.
[0018] Figure 1 This is a schematic diagram of the automatic PUR adhesive dispensing device according to an embodiment of this application; Figure 2 for Figure 1 A partial structural schematic diagram of the automatic PUR adhesive dispensing device is shown. Figure 3 for Figure 2 A partial enlarged structural diagram of the automatic PUR adhesive dispensing device shown in Figure I; Figure 4 for Figure 1 The diagram shows the structure of the dispensing mechanism of the automatic PUR adhesive dispensing device.
[0019] Illustrations: 1. Automatic PUR glue dispensing device; 10. Feeding mechanism; 11. Battery cell carrier; 111. First positioning clamp; 112. Second positioning clamp; 113. Spring floating structure; 12. Carrier bearing platform; 121. L-shaped fixed stop; 122. Movable stop; 123. Position detection sensor; 124. Stop power cylinder; 13. X-axis translation module; 20. Automatic dispensing mechanism; 21. Dispensing module; 211. Dispensing valve; 212. Glue storage container; 22. Z-axis lifting module; 23. First Y-axis translation module; 30. Intermittent glue discharge mechanism; 31. Glue discharge box; 32. Second Y-axis translation module; 40. Frame. Detailed Implementation
[0020] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0021] In the description of this application, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.
[0022] The technical solution of this application will be further described below with reference to the accompanying drawings and specific embodiments.
[0023] Please see Figures 1 to 4As shown, in one embodiment, this application provides an automatic PUR glue dispensing device 1, which specifically includes a feeding mechanism 10, an automatic dispensing mechanism 20, and an intermittent glue discharge mechanism 30. The automatic PUR glue dispensing device 1 is also provided with a loading station, a dispensing station, and a unloading station. The feeding mechanism 10 includes a cell carrier 11, a carrier platform 12 for supporting and positioning the cell carrier 11, and an X-axis translation module 13 for driving the carrier platform 12 to move back and forth between the loading station, the dispensing station, and the unloading station. The cell carrier 11 is configured to support and position the cell to be dispensed. The automatic dispensing mechanism 20 includes a dispensing module 21, a Z-axis lifting module 22 for driving the dispensing module 21 to rise and fall, and a first Y-axis translation module (not shown) for driving the dispensing module 21 to translate. When the dispensing module 21 is in its working state, and the carrier platform 12 carrying the battery cell carrier 11 moves to the dispensing station, the Z-axis lifting module 22, the first Y-axis translation module, and the X-axis translation module 13 work together to automatically dispense glue onto the battery cells to be dispensed on the battery cell carrier 11. The intermittent glue discharge mechanism 30 includes a glue discharge box 31, which has a working position at the dispensing station and an idle position away from the dispensing station. When the dispensing module 21 is in its idle state and switches to the working position, it performs intermittent glue discharge operations on the glue discharge box 31 at preset time intervals.
[0024] It should be noted that the automatic PUR glue dispensing device 1 in this embodiment is mainly used for the PUR glue dispensing process in the battery cell production process. The feeding mechanism 10 facilitates the flow of the battery cells to be dispensed between various workstations, the automatic dispensing mechanism 20 performs precise dispensing, and the intermittent glue discharge mechanism 30 is responsible for maintaining the unobstructed flow of the glue outlet of the dispensing module 21 during non-dispensing periods (i.e., idle state). The aforementioned X-axis translation module 13 is mainly used to realize the horizontal X-axis direction (i.e., the movement of the carrier platform 12) of the carrier platform 12. Figure 2 The Z-axis lifting module 22 mentioned above is mainly used to realize the reciprocating motion of the dispensing module 21 in the vertical Z-axis direction (i.e., the direction indicated by the middle arrow X). Figure 2 The first Y-axis translation module mentioned above is mainly used to realize the dispensing module 21 in the horizontal Y-axis direction (i.e., the direction indicated by the middle arrow Z). Figure 2 The reciprocating motion is along the direction indicated by the middle arrow Y. The X, Y, and Z axes are perpendicular to each other and together constitute a three-dimensional motion system.
[0025] The aforementioned dispensing module 21 is mainly used to realize the corresponding dispensing operation. Specifically, it may include a dispensing valve 211 for performing the dispensing action (the dispensing port mentioned below refers to the dispensing port of the dispensing valve 211), a storage container 212 for storing PUR adhesive, and a supply pipeline (not shown) connecting the dispensing valve 211 and the storage container 212. To meet the stringent requirements of microliter (μL) level adhesive volume control accuracy and high-speed response in the battery cell dispensing process, the dispensing valve 211 in this embodiment can specifically be a piezoelectric valve. This piezoelectric valve utilizes the inverse piezoelectric effect of piezoelectric ceramics. When a voltage is applied, the piezoelectric ceramics produce microscopic deformation. This microscopic deformation directly or through a lever amplification mechanism drives the valve needle to make axial movement, thereby precisely controlling the opening amplitude and opening duration of the gap between the valve needle and the valve seat. Compared to traditional pneumatic dispensing valves, piezoelectric valves offer advantages such as extremely fast response speed (milliseconds), high dispensing frequency, and good droplet volume consistency, enabling non-contact jet dispensing to further improve dispensing efficiency and accuracy. Furthermore, the aforementioned X-axis translation module 13, Z-axis lifting module 22, and first Y-axis translation module are all used to achieve linear reciprocating motion along the corresponding axes to drive the corresponding components to perform precise displacement within a preset stroke range. As an exemplary and not limiting embodiment, each translation module (or lifting module) can employ conventional linear motion actuators in the art, specifically including but not limited to the following types: an integrated linear module, which integrates a guide rail, slider, and drive unit, with a compact structure and convenient installation; an electric cylinder, which integrates a servo motor and a ball screw, offering advantages such as high control precision and fast response speed; or a servo motor-driven screw-slider mechanism, which drives the screw to rotate via the motor, driving the corresponding slider to achieve linear motion. Those skilled in the art can flexibly select any of the above-mentioned drive structures or their equivalent alternatives based on a comprehensive consideration of factors such as stroke distance, load weight, movement speed, positioning accuracy, and cost control in actual application scenarios; this application does not impose any special limitations on this. Additionally, the PUR adhesive automatic dispensing device 1 also includes a frame 40 and a control system (not shown in the figure) to support and coordinate the automated operation of the aforementioned mechanisms.
[0026] Furthermore, when the X-axis translation module 13 drives the carrier platform 12 to the loading station, manual loading can be performed at the loading station, or the external automatic loading robot arm can automatically place the battery cell carrier 11, which holds the battery cell to be dispensed, onto the carrier platform 12 to complete the corresponding automated loading operation. Similarly, after dispensing is completed, when the X-axis translation module 13 drives the carrier platform 12 to the unloading station, manual unloading can be performed at the unloading station, or the external automatic unloading robot arm can automatically remove the corresponding battery cell carrier 11 from the carrier platform 12 to complete a complete work cycle.
[0027] In this way, the automatic PUR glue dispensing device 1 of this application embodiment, through the above-described structural configuration, by setting an intermittent glue discharge mechanism 30 and configuring the glue discharge box 31 to switch between working and idle positions, allows the dispensing module 21 to perform intermittent glue discharge operations on the glue discharge box 31 at preset time intervals when idle, that is, periodically dispensing a small amount of glue from the front end. In this way, the freshness and fluidity of the glue at the dispensing outlet of the dispensing module 21 can be maintained, thereby effectively avoiding the problems of poor glue fluidity, poor glue dispensing and nozzle blockage caused by the PUR glue at the dispensing outlet being exposed to air for a long time and partially curing. This significantly improves the stability of dispensing quality, reduces the frequency of manual cleaning and downtime intervention time, and improves continuous production efficiency and the reliability of automated equipment operation.
[0028] In some examples, such as Figure 2 and Figure 3 As shown, the intermittent glue dispensing mechanism 30 also includes a second Y-axis translation module 32 that drives the glue dispensing box 31 to switch back and forth between an idle position and a working position. Thus, by setting up the second Y-axis translation module 32, the position switching of the glue dispensing box 31 is automatically achieved, ensuring that the dispensing module 21 can accurately align with the glue dispensing box 31 during glue dispensing operations, while also allowing space during dispensing operations. This avoids mutual interference between mechanisms and improves the automation level and operational reliability of the equipment.
[0029] It should be noted that the second Y-axis translation module 32 in this example is mainly used to realize the displacement of the glue box 31 in the horizontal Y-axis direction (i.e., Figure 2 The reciprocating motion in the direction indicated by the middle arrow X) enables the glue discharge box 31 to switch back and forth between the idle position and the working position. In addition, the second Y-axis translation module 32 in this example can be a conventional linear module, an electric cylinder, or a screw-slider mechanism driven by a motor, which is simple to control and has high positioning accuracy.
[0030] In some examples, the intermittent dispensing mechanism 30 also includes a dispensing status detection module (not shown) positioned above the dispensing box 31. This module detects the state of the dispensing adhesive after each intermittent dispensing cycle by the dispensing module 21, generating a corresponding dispensing feedback signal. The dispensing module 21 is also configured to adjust the dispensing time interval for the next intermittent dispensing cycle based on the feedback signal. Thus, by introducing dispensing status detection and dynamic feedback adjustment mechanisms, adaptive optimization of the dispensing strategy is achieved, ensuring smooth dispensing at the outlet while maintaining the economy of the adhesive, further enhancing the equipment's intelligence and operational reliability.
[0031] It should be noted that the dispensing status detection module in this example specifically detects the current dispensing state of the adhesive by monitoring the physical characteristics of the dispensing liquid in real time. These physical characteristics include, but are not limited to, the continuity of the adhesive's fall, its stringing state, its flow rate, and its apparent viscosity. By analyzing these characteristics, it can be determined whether the adhesive is experiencing abnormalities such as decreased fluidity due to partial solidification. When signs of adhesive solidification are detected, the control system shortens the time interval between the next dispensing operations to increase the dispensing frequency and promptly dispose of any partially solidified adhesive at the dispensing port. Conversely, if the detection results show that the adhesive is dispensing smoothly and in a normal state, the control system appropriately extends the time interval between the next dispensing operations to reduce adhesive waste and minimize the impact of the dispensing operation on the production cycle. As an optional implementation, the dispensing status detection module can employ a miniature industrial camera or image sensor, which is installed above the dispensing box 31 and facing the dispensing port of the dispensing module 21 to acquire real-time images of the adhesive falling from the dispensing port during each intermittent dispensing operation. After analysis by image processing algorithms, the acquired images can identify key features such as the flow pattern, breakage state, and string length of the adhesive. The control system compares the analysis results with a preset normal state threshold and dynamically determines the time interval for the next adhesive discharge. Those skilled in the art will understand that the specific selection of this adhesive discharge state detection module is not limited to image acquisition equipment; other detection elements capable of non-contact sensing of adhesive morphology changes, such as photoelectric sensors and laser measurement sensors, can also be used, as long as they can effectively reflect changes in the adhesive discharge state. This application does not impose any special limitations in this regard.
[0032] In some examples, the intermittent glue discharge mechanism 30 also includes a glue quantity detection sensor (not shown) installed inside the glue discharge box 31. This sensor is configured to detect the accumulated glue quantity in the glue discharge box 31 in real time and output a glue discharge cleaning reminder signal when the accumulated glue quantity reaches a preset glue quantity threshold. Thus, by introducing the glue quantity detection sensor, real-time monitoring of the accumulated waste glue quantity in the glue discharge box 31 is achieved. When the accumulated glue quantity reaches the preset glue quantity threshold, the glue discharge cleaning reminder signal can promptly prompt the operator to perform manual cleaning, or directly trigger the automatic cleaning device to perform the glue discharge cleaning action in equipment with automatic cleaning functions. This effectively prevents glue from overflowing from the glue discharge box due to excessive accumulation, avoiding glue contamination of the internal environment of the equipment or affecting the normal operation of other surrounding mechanisms. It ensures that the intermittent glue discharge mechanism 30 can continuously, stably, and reliably perform glue discharge operations, guaranteeing the automation level of the entire machine during long-term continuous production.
[0033] It should be noted that the glue quantity detection sensor in this example is mainly used for non-contact sensing of changes in the height of the glue level within the glue dispensing box 31. As an optional but non-limiting implementation, the glue quantity detection sensor can be a photoelectric sensor, including a light emitting end and a light receiving end positioned opposite each other on both sides of the glue dispensing box 31. When the glue level rises to the height of the light path, the glue blocks the light signal, and the sensor outputs a trigger signal. As another optional implementation, the glue quantity detection sensor can be a capacitive sensor, installed on the outer or inner wall of the glue dispensing box 31. It utilizes the difference in dielectric constant between the glue and air, detecting changes in capacitance to determine whether the glue level has reached a set position. As yet another optional implementation, the glue quantity detection sensor can be an ultrasonic sensor, installed above the glue dispensing box 31. By emitting ultrasonic waves towards the glue surface and receiving the reflected echoes, it measures the distance between the sensor and the surface, thereby achieving continuous and accurate monitoring of the accumulated glue quantity.
[0034] In applications requiring high detection accuracy or continuous monitoring of adhesive accumulation, ultrasonic sensors or capacitive sensors with analog outputs can be used to provide real-time feedback on the adhesive level. The control system can then predict the time required to reach the cleaning threshold and schedule cleaning tasks in advance. In simpler scenarios requiring only fixed-point alarms, photoelectric sensors or capacitive sensors with digital outputs can be used to balance cost control and detection reliability.
[0035] When the glue quantity detection sensor detects that the accumulated glue volume has reached a preset glue quantity threshold, the trigger signal output by the sensor is transmitted to the equipment's control system. The control system executes corresponding response operations based on the received signal. These response operations include, but are not limited to: displaying a prompt message such as "Glue box is full, please empty it in time" on the equipment's human-machine interface; illuminating the corresponding warning indicator light; issuing a buzzer or voice alarm; in more automated equipment, the control system can also automatically control the cleaning device (such as a vacuum glue suction device or glue scraping mechanism) to automatically clean the waste glue in the glue discharge box 31, and automatically reset the detection state of the glue quantity detection sensor after cleaning, realizing fully automatic closed-loop control of glue discharge and cleaning.
[0036] Those skilled in the art will understand that the specific selection and installation method of the glue quantity detection sensor can be flexibly configured according to actual application requirements. The preset glue quantity threshold can also be reasonably adjusted according to factors such as the volume of the glue discharge box 31, the frequency of glue discharge operation, and the maintenance cycle of the production site. As long as it can effectively monitor the accumulated glue quantity and issue timely cleaning reminders, it can be used as an alternative implementation of the glue quantity detection sensor in this example, and this application does not impose any special limitations on it.
[0037] In some examples, such as Figure 2 and Figure 3 As shown, the upper surface of the battery cell carrier 11 is respectively provided with a first positioning clamp 111 and a second positioning clamp 112, and the first positioning clamp 111 and the second positioning clamp 112 are arranged opposite to each other to form a battery cell positioning groove between the first positioning clamp 111 and the second positioning clamp 112. The battery cell positioning groove is configured to clamp and fix the battery cell to be glued. In this way, the battery cell positioning groove formed by the first positioning clamp 111 and the second positioning clamp 112 can accurately physically position the battery cell to be glued placed thereon, preventing the battery cell to be glued from shifting during the glue dispensing process and ensuring the accuracy of the glue dispensing position.
[0038] It should be noted that the first positioning clamp 111 and the second positioning clamp 112 in this example can be made of a material with a certain degree of elasticity, such as polyurethane or rubber, to avoid scratching the surface of the battery cell during the clamping process.
[0039] In some examples, such as Figure 2 and Figure 3 As shown, at least one of the first positioning clamp 111 and the second positioning clamp 112 is movable, so that the distance between the first positioning clamp 111 and the second positioning clamp 112 is adjustable. Thus, by making at least one positioning clamp movable, the length of the cell positioning slot can be easily adjusted, thereby accommodating cell products of different lengths and improving the applicability of the equipment.
[0040] It should be noted that the positioning clamps in this example can be clamped by springs or miniature cylinders to securely fix the battery cell while avoiding damage due to excessive clamping force. Taking the first positioning clamp 111 as an example, it can be movably connected to the battery cell carrier 11 via a spring-floating structure 113, allowing the first positioning clamp 111 to move elastically toward or away from the second positioning clamp 112, thereby achieving adaptive adjustment of the spacing and stable clamping. Specifically, the spring-floating structure 113 includes several horizontal connecting rods and several springs (not shown). The other ends of the horizontal connecting rods are housed in corresponding connecting rod mounting slots on the battery cell carrier 11 and can slide within the connecting rod mounting slots. Each spring is sleeved on the outside of each horizontal connecting rod, and both ends of the spring abut against the groove wall between the first positioning clamp 111 and the connecting rod mounting slot, providing a continuous elastic biasing force to keep the first positioning clamp 111 clamping toward the second positioning clamp 112. With the above structure, when battery cells of different sizes are placed into the battery cell positioning slot, the first positioning clamp 111 can adaptively move backward or forward according to the actual width of the battery cell, and achieve elastic clamping of the battery cell under the action of the spring, which not only ensures the reliability of positioning, but also avoids rigid damage to the battery cell.
[0041] In some examples, such as Figure 2 and Figure 3 As shown, the battery cell carrier 11 has a rectangular structure. The upper surface of the carrier platform 12 is provided with an L-shaped fixed stop 121 and a movable stop 122 with an L-shaped slot. The L-shaped fixed stop 121 and the L-shaped slot are diagonally arranged so that, with the diagonal movement of the movable stop 122, an adjustable carrier positioning groove is formed between the L-shaped fixed stop 121 and the L-shaped slot. This positioning groove is used to clamp and fix the battery cell carrier 11. Thus, through the cooperation of the L-shaped fixed stop 121 and the diagonally arranged movable stop 122, the battery cell carrier 11 can be clamped and positioned from two vertical directions. This not only provides high positioning accuracy but also adapts to carriers of different shapes and sizes, enhancing the versatility of the device.
[0042] It should be noted that the L-shaped fixed stop 121 in this example can be a one-piece structure or a combination of two mutually perpendicular stops. Specifically, the movable stop 122 in this example can be driven by a stop power cylinder 124, which drives the movable stop 122 to move diagonally, providing a reliable clamping force on the battery cell carrier 11. Simultaneously, the clamping force can be controlled by adjusting the air pressure to prevent deformation of the battery cell carrier 11.
[0043] In some examples, such as Figure 2 and Figure 3 As shown, a positioning detection sensor 123 is also provided on the upper surface of the carrier platform 12. The positioning detection sensor 123 is configured to detect whether the carrier positioning slot clamps and fixes the battery cell carrier 11. The X-axis translation module 13 is configured to move the carrier platform 12 from the loading station to the dispensing station when the positioning detection sensor 123 detects that the battery cell carrier 11 is clamped and fixed in the carrier positioning slot. In this way, by setting the positioning detection sensor 123, it can be confirmed whether the battery cell carrier 11 has been accurately placed on the carrier platform 12 and reliably clamped. At the same time, by only activating the X-axis translation module 13 to move the carrier platform 12 to the dispensing station when this condition is met, it effectively prevents equipment failure caused by no-load operation or improper placement of the carrier.
[0044] It should be noted that the positioning detection sensor 123 in this example can be any one of an infrared sensor, a photoelectric sensor, a proximity switch, or a micro switch. Taking an infrared sensor as an example, it can include an infrared transmitter and an infrared receiver, which are positioned opposite each other on both sides of the carrier positioning slot. When the battery cell carrier 11 is accurately placed in the carrier positioning slot and clamped, the side wall of the battery cell carrier 11 will block the optical path between the infrared transmitter and the infrared receiver, and the infrared receiver will not receive the infrared signal, thereby triggering the positioning signal; conversely, if the battery cell carrier 11 is not placed in place or not clamped, the optical path remains unobstructed, and it is determined that it is not in position. This detection method has a fast response speed and high reliability, and can effectively ensure the accuracy of the detection results.
[0045] In some examples, such as Figure 2 and Figure 3 As shown, the carrier platform 12 also has a built-in weighing sensor (not shown). The weighing sensor is configured to acquire the actual amount of glue dispensed in real time when the dispensing module 21 performs automatic dispensing operation on the battery cell carrier 11. The dispensing module 21 is also configured to automatically adjust the current dispensing speed based on the difference between the actual amount of glue dispensed and the preset amount of glue dispensed. Thus, by integrating the weighing sensor into the carrier platform 12, this application constructs a real-time closed-loop control system for the amount of glue dispensed. Specifically, during the dispensing operation, the weighing sensor continuously collects weight data at a preset sampling frequency (e.g., 10 to 100 times per second) and transmits the data to the control system in real time. When a deviation between the actual amount of glue dispensed and the preset target value is detected, the control system can immediately adjust the dispensing speed of the dispensing module 21, thereby ensuring the accuracy and consistency of the amount of glue dispensed, effectively overcoming the problem of glue quantity deviation caused by factors such as glue viscosity fluctuations, changes in glue supply air pressure, wear of the dispensing valve core, or temperature changes, so as to significantly improve the stability and reliability of the dispensing quality.
[0046] It should be noted that the weighing sensor in this example can be a high-precision strain gauge sensor, located at the bottom of the carrier platform 12, capable of measuring the total weight, including the battery carrier 11, the battery cell to be dispensed, and the applied adhesive, in real time. By calculating the weight difference before and after dispensing, the actual amount of adhesive dispensed can be accurately obtained. Based on the difference between this feedback value and the preset dispensing amount, the control system uses a PID control algorithm to dynamically adjust the opening duration or air pressure of the dispensing valve of the dispensing module 21 to adjust the current dispensing speed (for example, the dispensing speed can be increased by appropriately increasing the opening duration of the dispensing valve or increasing the supply air pressure, or the dispensing speed can be decreased by appropriately decreasing the opening duration of the dispensing valve or decreasing the supply air pressure), to achieve precise adhesive quantity control.
[0047] In some examples, such as Figure 2 and Figure 3 As shown, the automatic dispensing mechanism 20 also includes a vision positioning module (not shown) positioned above the dispensing station. This vision positioning module is configured to acquire a dispensing quality image of the battery cell to be dispensed after the dispensing module 21 completes the initial dispensing operation on the current battery cell. The dispensing module 21 is also configured to perform a secondary dispensing operation on the current battery cell to be dispensed, based on the comparison result between the dispensing quality image and a preset target dispensing quality image, in cooperation with the Z-axis lifting module 22, the first Y-axis translation module, and the X-axis translation module 13. In this way, the vision positioning module can not only guide the position of the initial dispensing, but more importantly, it can perform real-time quality detection of the dispensing result and guide the secondary dispensing, which is equivalent to integrating a "detection-repair" function, significantly improving the pass rate of the final product.
[0048] It should be noted that the vision positioning module mainly includes an industrial camera, lens, and light source. After image processing algorithms analyze the dispensing quality images it acquires, it can accurately identify defects such as whether the glue line is broken, whether the glue amount is insufficient, and whether the trajectory is deviated. Based on the location and severity of the defects, the control system plans the path and glue amount for secondary dispensing and controls the motion module and dispensing module 21 to perform precise glue replenishment operations.
[0049] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. An automatic dispensing device for PUR adhesive, characterized in that, The automatic PUR adhesive dispensing device includes a feeding mechanism, an automatic dispensing mechanism, and an intermittent discharging mechanism. The device also includes a loading station, a dispensing station, and a unloading station. The feeding mechanism includes a cell carrier, a carrier platform for supporting and positioning the cell carrier, and an X-axis translation module for driving the carrier platform to move back and forth between the loading station, the dispensing station, and the unloading station. The cell carrier is configured to support and position the cell to be dispensed. The automatic dispensing mechanism includes a dispensing module, a Z-axis lifting module for driving the dispensing module to rise and fall, and a first Y-axis translation module for driving the dispensing module to translate. When the dispensing module is set to work, and the carrier platform carries the battery cell carrier to the dispensing station, the Z-axis lifting module, the first Y-axis translation module, and the X-axis translation module work together to automatically dispense the battery cell to be dispensed on the battery cell carrier. The intermittent glue discharge mechanism includes a glue discharge box, which has a working position located at the dispensing station and an idle position away from the dispensing station. The dispensing module is also configured to perform intermittent glue discharge operations on the glue discharge box at preset time intervals when the glue discharge box is switched to the working position in the idle state.
2. The automatic PUR adhesive dispensing device according to claim 1, characterized in that, The intermittent glue discharge mechanism also includes a second Y-axis translation module that drives the glue discharge box to switch back and forth between the idle position and the working position.
3. The automatic PUR adhesive dispensing device according to claim 1, characterized in that, The intermittent glue discharge mechanism also includes a glue discharge status detection module disposed above the glue discharge box. The glue discharge status detection module is configured to detect the glue liquid state of the current discharge after the dispensing module completes each intermittent glue discharge, so as to generate a corresponding glue discharge feedback signal. The dispensing module is also configured to adjust the dispensing time interval for the next intermittent dispensing based on the dispensing feedback signal.
4. The automatic PUR adhesive dispensing device according to claim 1, characterized in that, The intermittent glue discharge mechanism also includes a glue quantity detection sensor installed in the glue discharge box. The glue quantity detection sensor is configured to detect the accumulated glue quantity in the glue discharge box in real time, and output a glue discharge and cleaning reminder signal when the accumulated glue quantity reaches a preset glue quantity threshold.
5. The automatic PUR adhesive dispensing device according to claim 1, characterized in that, The upper surface of the battery cell carrier is provided with a first positioning clamp and a second positioning clamp, and the first positioning clamp and the second positioning clamp are arranged opposite to each other to form a battery cell positioning groove between the first positioning clamp and the second positioning clamp. The battery cell positioning groove is configured to clamp and fix the battery cell to be glued.
6. The automatic PUR adhesive dispensing device according to claim 5, characterized in that, At least one of the first positioning clamp and the second positioning clamp is movably configured so that the distance between the first positioning clamp and the second positioning clamp is adjustable.
7. The automatic PUR adhesive dispensing device according to claim 1, characterized in that, The battery cell carrier has a rectangular structure. The upper surface of the carrier platform is provided with an L-shaped fixed block and a movable block with an L-shaped slot. The L-shaped fixed block and the L-shaped slot are arranged diagonally so that when the movable block moves diagonally, an adjustable carrier positioning groove is formed between the L-shaped fixed block and the L-shaped slot. The carrier positioning groove is configured to clamp and fix the battery cell carrier.
8. The automatic PUR adhesive dispensing device according to claim 7, characterized in that, The upper surface of the carrier platform is also provided with a positioning detection sensor, which is configured to detect whether the carrier positioning slot clamps and fixes the battery cell carrier. The X-axis translation module is configured to move the carrier platform from the loading station to the dispensing station when the positioning sensor detects that the carrier positioning slot is clamping and fixing the battery cell carrier.
9. The automatic PUR adhesive dispensing device according to claim 1, characterized in that, The carrier platform is also equipped with a built-in weighing sensor, which is configured to obtain the current actual amount of glue dispensing in real time when the dispensing module performs automatic dispensing operation on the battery cell carrier. The dispensing module is also configured to automatically adjust the current dispensing speed based on the difference between the actual dispensing amount and the preset dispensing amount.
10. The automatic dispensing device for PUR adhesive according to any one of claims 1-9, characterized in that, The automatic dispensing mechanism further includes a vision positioning module disposed above the dispensing station. The vision positioning module is configured to acquire a dispensing quality image of the battery cell to be dispensed after the dispensing module completes the initial dispensing operation on the current battery cell to be dispensed. The dispensing module is also configured to perform a secondary dispensing operation on the current battery cell to be dispensed based on the comparison result between the dispensing quality image and a preset target dispensing quality image, in cooperation with the Z-axis lifting module, the first Y-axis translation module, and the X-axis translation module.