Button cell assembling equipment

Abstract

The invention discloses button cell assembling equipment, which comprises a feeding device, an electrolyte adding device and a sealing and pressing device, and is characterized in that the feeding device comprises a rotating motor driven by a corresponding first driving mechanism; the charging tray taking mechanism comprises an electromagnet which is in transmission connection with the rotating motor and a magnetic metal piece which is fixedly connected to the charging tray; the button battery material taking mechanism comprises a plurality of suction nozzle mounting assemblies and suction nozzles mounted on the suction nozzle mounting assemblies; the sealing and pressing device comprises a sealing and pressing bottom die assembly; an upper die assembly is sealed and pressed; an air blowing mechanism; and the electrolyte adding device comprises an electrolyte pipetting gun, and the electrolyte pipetting gun is driven by a corresponding fourth driving mechanism. According to the invention, the raw materials for preparation of the button cell can be stacked in sequence in a full-automatic manner, electrolyte is added, and then the stacked raw materials for preparation of the button cell after the electrolyte is added are sealed, pressed and assembled.

Description

Technical Field

[0001] The invention relates to a button cell assembly device, which can fully automatically stack raw materials for preparing button cells in sequence, add electrolyte, and then seal and assemble the stacked raw materials for preparing button cells after the electrolyte is added. Background Art

[0002] During the assembly process of button batteries, the materials for making button batteries need to be loaded one by one to the corresponding assembly stations for compaction and assembly into a whole. The materials for making button batteries include positive electrode shells, positive electrode sheets, diaphragms, negative electrode sheets, gaskets, springs, negative electrode shells, etc., and the quantity is relatively large.

[0003] The traditional method of feeding materials for button battery production is manual feeding, which has low feeding efficiency and cannot meet the feeding requirements of automated button battery assembly equipment. For this reason, feeding devices for button battery assembly equipment that use robots for feeding have begun to be put into use. The existing feeding devices for button battery assembly equipment that use robots for feeding have the problem of insufficient adaptability during actual use. The reason is that most of the incoming materials for button battery production are embedded in the corresponding material trays. Therefore, the materials embedded in the material trays need to be grabbed and adsorbed one by one by the robot, and then transferred to the corresponding assembly station. However, after each tray of materials is grabbed, it is still necessary to manually install the tray embedded with the button battery production materials in place, which results in a significant impact on the feeding efficiency. This is undoubtedly unacceptable for automated button battery assembly equipment.

[0004] The materials for making button batteries are accurately stacked and loaded onto the corresponding mold base by a manipulator. In this process, the electrolyte is added to the stacked materials for making button batteries as needed by an electrolyte adding device, and then the stacked materials for making button batteries are fixed and pressed by a corresponding sealing and pressing mechanism. Since the materials for making button batteries have many components, the problem of positional displacement is prone to occur during the sealing and pressing process; and the materials for making button batteries with electrolyte added are prone to electrolyte overflow and adhesion to the sealing and pressing mechanism during the actual sealing and pressing process, which affects the subsequent sealing and pressing process and is very troublesome.

[0005] Therefore, the purpose of the present invention is to design an automated button battery assembly device that can quickly absorb and move materials embedded in a material tray to a corresponding assembly station, and can conveniently replace the material tray embedded with materials for button battery production, thereby significantly improving the adaptability and efficiency of loading; and can effectively and precisely fix the stacked materials for button battery production and then seal them to ensure the sealing accuracy; and can effectively remove the electrolyte adhered to the seal, thereby effectively preventing the impact caused by electrolyte overflow. Summary of the invention

[0006] In view of the technical problems existing in the above-mentioned prior art, the present invention provides a button battery assembly device, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0007] The technical solution of the present invention is: A button battery assembly device includes a feeding device, an electrolyte adding device and a sealing device. The feeding device comprises: A rotating motor is driven by a corresponding first driving mechanism, wherein the output shaft end of the rotating motor is arranged downward; The material tray taking mechanism comprises an electromagnet which is connected to the lower side of the output shaft end of the rotating motor through a corresponding connecting piece, and a magnetic metal piece fixedly connected to the corresponding material tray, and the material trays are respectively embedded with materials for making button batteries; The button battery material taking mechanism comprises a plurality of suction nozzle mounting assemblies fixedly connected to the outer bottom of the connecting member, wherein the suction nozzle mounting assemblies are respectively downwardly mounted with suction nozzles for adsorbing and fixing the button battery manufacturing materials on the material tray; The sealing device comprises: The sealing and pressing bottom die assembly comprises a bottom die seat movably mounted on the corresponding sealing and pressing workbench, and the bottom die seat is driven by the corresponding second driving mechanism; The sealing upper die assembly comprises a connecting block which is escalably arranged on the upper side of the sealing workbench, the connecting block is driven by a corresponding third driving mechanism, a corresponding upper die pressing block is fixedly installed on the bottom side of the connecting block, a corresponding upper die top block is movably installed through the middle of the upper die pressing block, the top of the upper die top block is connected to the connecting block through a first elastic member, and the bottom of the upper die top block extends to the lower side of the bottom end of the upper die pressing block; The blowing mechanism comprises an air guide cavity provided on the connecting block, the connecting block is provided with an air inlet hole connected to the air guide cavity, and the upper mold top block is evenly provided with a plurality of blowing holes connected to the air guide cavity; The electrolyte adding device comprises: An electrolyte pipette gun, which is driven by a corresponding fourth driving mechanism, and through which electrolyte is quantitatively added between materials for making button batteries during the stacking process.

[0008] The feeding device also includes a feeding workbench, on which a corresponding material positioning platform is movably installed. The material positioning platform is driven by a driving cylinder fixedly installed on the feeding workbench, and a corresponding stacking workbench is fixedly installed on the outer side of the feeding workbench.

[0009] The suction nozzle mounting assembly includes a fixed plate fixedly connected to the outer side of the connecting member, the fixed plate is liftably mounted with a corresponding L-shaped plate, and the suction nozzles are respectively fixedly mounted on the bottom sides of the corresponding L-shaped plates; corresponding sliding grooves are respectively provided on the fixed plate, and the L-shaped plates can be movably clamped into the sliding grooves, and a corresponding locking hole is provided at the bottom of the L-shaped plate, and a circle of corresponding locking convex edges is provided in the middle of the locking hole, and corresponding locking bolts are passed through the locking holes to lock the L-shaped plate to the fixed plate, and a set of tightening springs arranged at the end of the rod of the locking bolt are squeezed and installed between the locking convex edge and the bottom of the fixed plate.

[0010] The suction nozzles are fixedly connected to the bottom side of the L-shaped plate through corresponding L-shaped connecting blocks, there are four suction nozzle mounting assemblies, a cross-shaped fixed mounting plate is fixedly mounted on the connecting piece, and corresponding mounting grooves are respectively concavely arranged in four directions of the fixed mounting plate, and the fixed plate members of the suction nozzle mounting assembly are respectively fixedly clamped into the corresponding mounting grooves, and corresponding guide blocks are respectively fixedly connected to the inner sides of the fixed plates, and corresponding card grooves are respectively arranged on the sides of the guide blocks that are not mounted to the fixed plates, and the card grooves are respectively spaced apart from the bottom of the mounting grooves on the fixed mounting plate.

[0011] The output end of the third driving mechanism is arranged downward and fixedly connected to a corresponding threaded tube downward, the upper part of the connecting block is fixedly connected to the threaded tube by a threaded connection, and the upper part of the first elastic member is fixedly sleeved in the threaded tube.

[0012] A corresponding fixing hole is recessed downward at the top of the bottom mold seat, and a corresponding base elastic ring is movably installed upward in the fixing hole through a corresponding second elastic member, and the base elastic ring extends to the upper side of the top of the bottom mold seat; a corresponding bottom mold fixing block is installed at the fixing hole of the bottom mold seat, and the bottom of the bottom mold fixing block is closed and plugged into the bottom of the fixing hole, and the top of the bottom mold fixing block is spaced apart from the fixing hole, and the top of the bottom mold fixing block extends to the upper side of the fixing hole of the bottom mold seat, and the base elastic ring and the second elastic member are fixedly sleeved between the bottom mold fixing block and the fixing hole according to height.

[0013] The electrolyte adding device also includes a material fixing mechanism, which includes a fixed bracket arranged on the bottom side of the fourth driving mechanism, a fixed clamp for fixing an electrolyte container bottle filled with electrolyte is fixedly installed in the middle of the fixed bracket, a pipette tip fixing box is fixedly installed on the left side of the fixed bracket, a pipette tip recovery box is fixedly installed on the right side of the fixed bracket, and a corresponding rotating clamp is fixedly installed on the left side of the electrolyte pipette.

[0014] A corresponding mounting part is fixedly installed on the right side of the electrolyte pipette gun, and a material receiving part located on the bottom side of the end of the electrolyte pipette gun can be swingably installed on the mounting part. The material receiving part is provided with a liquid collecting chamber corresponding to the end of the electrolyte pipette gun, and the material receiving part is swing-driven by a corresponding swing driving mechanism; the swing driving mechanism includes a group of swing rods hinged on the mounting part, and the ends of the swing rods that are not hinged to the mounting part are respectively hinged to the material receiving part, and one of the swing rods is transmission-connected to the output shaft end of the driving motor installed on the mounting part.

[0015] The fixed bracket is provided with corresponding gear convex edges at positions corresponding to the gun tip fixing box and the gun tip recovery box, and the gun tip fixing box and the gun tip recovery box are respectively fixedly embedded in the inner sides of the corresponding gear convex edges; the fixed bracket is provided with a clamping claw for clamping and fixing the gun tip fixing box; the first driving mechanism adopts a manipulator, the second driving mechanism and the third driving mechanism adopt a screw driving mechanism, and the fourth driving mechanism adopts a three-axis motion mechanism.

[0016] The button battery assembly equipment also includes an open circuit voltage detector for detecting the open circuit voltage of the button battery after assembly. The materials used to make the button battery include a positive electrode shell, a pole piece, a diaphragm, a lithium sheet, a gasket, a spring, and a negative electrode shell; The control method of the button battery assembly equipment comprises: The packaging pressure value, mean value and variance of the sealing device are defined as: 1 , μ 1 , σ 1 ; The packaging pressing holding time value, mean, and variance are: x 2 , μ 2 , σ 2 ; The thickness, mean and variance of the positive electrode shell are: x 3 , μ 3 , σ 3 ; The diameter, mean, and variance of the positive electrode sheet are: x 4 , μ 4 , σ 4; The thickness, mean and variance of the negative electrode shell are: x 5 , μ 5 , σ 5 ; The diameter, mean, and variance of the negative electrode sheet are: x 6 , μ 6 , σ 6 ; The electrolyte addition amount, mean, and variance are: x 7 , μ 7 , σ 7 ; The gasket thickness value, mean, and variance are: x 8 , μ 8 , σ 8 ; The thickness, mean, and variance of the spring are: x 9 , μ 9 , σ 9 ; The packaging multivariate Gaussian probability distribution of the sealing device is calculated according to the following formula: ; Through the multivariate Gaussian probability distribution and based on the acquisition function in Bayesian optimization, at least 10 points predicted to produce optimal results are selected as test assembly parameters. After packaging the products composed of each group of test assembly parameters, the open circuit voltage of the products composed of each group of test assembly parameters is detected through the open circuit voltage detector, and the test assembly parameter with the highest open circuit voltage value is selected as the assembly parameter of the product.

[0017] Advantages of the present invention: 1) The present invention uses the electromagnet of the feeding device to cooperate with the magnetic metal parts fixed on the material tray to absorb and move the material tray embedded with the button battery manufacturing material to the material positioning platform, and then uses the suction nozzle to absorb and move the button battery manufacturing material embedded on the material tray to stack it on the bottom mold seat of the sealing and pressing device; the electrolyte is quantitatively added between the button battery manufacturing materials in the stacking process through the electrolyte transfer gun, and then the stacked button battery manufacturing materials with electrolyte added are sealed and pressed by the downward movement of the sealing and pressing upper mold assembly and the cooperation with the bottom mold seat. Thus, the rapid sealing and pressing assembly of button batteries is fully automated.

[0018] 2) The feeding device of the present invention can realize the installation of the electromagnet of the material tray picking mechanism and the button battery material picking mechanism through the intervention of the connecting parts. During the feeding process, the material tray located on the stacking workbench can be adsorbed and moved to the material positioning platform only through the cooperation of the electromagnet of the material tray picking mechanism arranged on the rotating motor and the magnetic metal parts fixedly connected to the corresponding material tray; and then the button battery production material embedded on the material tray can be adsorbed and moved to the bottom mold seat of the sealing and pressing device through the suction nozzle, thereby significantly improving the feeding adaptability and feeding efficiency of the present invention to meet the realization of the fully automated feeding process of the assembly process.

[0019] 3) During the process of sealing and pressing the product by the sealing and pressing device of the present invention, first, the connecting block moves downward to drive the upper mold top block to pre-compress and fix the button battery manufacturing material under the elastic force of the first elastic member; then, the connecting block continues to move downward to drive the upper mold pressing block to press the top of the positioned button battery manufacturing material. During this process, the bottom of the upper mold top block shrinks inward to be flush with the bottom of the upper mold pressing block, thereby effectively and accurately sealing and pressing the button battery manufacturing material.

[0020] The sealing device is also equipped with an air blowing mechanism. During the downward movement of the connecting block, external compressed gas enters the air guide cavity through the air inlet of the air blowing mechanism and is blown out along the air holes of the upper mold top block to blow off the electrolyte attached to the sealing upper mold assembly, thereby effectively removing the electrolyte attached to the sealing upper mold assembly to effectively prevent the impact caused by electrolyte overflow, thereby ensuring that the sealing process continues effectively.

[0021] 4) The present invention improves the design of the fixed plate and the L-shaped plate of the suction nozzle installation assembly to ensure the sliding accuracy between the fixed plate and the L-shaped plate; then the position of the L-shaped plate is adjusted by the intervention of the locking hole, the locking convex edge, the tightening spring and other components, thereby effectively realizing the position of the L-shaped plate under the premise of high-precision position adjustment, so as to ensure the high-precision adjustment of the installation position of the suction nozzle of different button battery material picking mechanisms, thereby ensuring the adsorption stability of the material, and further satisfying the realization of the fully automated loading process of the assembly process.

[0022] 5) The suction nozzles of the present invention are fixedly connected to the bottom side of the L-shaped plate through the corresponding L-shaped connecting blocks, and the fixed plate of the suction nozzle installation assembly is fixedly installed through the installation grooves provided on the cross-shaped fixed installation plate; finally, the corresponding guide blocks are fixedly connected to the inner side of the fixed plate, and the clamping grooves on the guide blocks are spaced apart from the bottom of the installation grooves. In this way, the connection air pipe of the suction nozzle can directly extend outward along the interval between the clamping groove and the installation groove, and the end of the connection air pipe of the suction nozzle is fixed through the synergistic effect of the clamping groove on the guide block and the installation groove on the fixed installation plate, thereby effectively ensuring the air tightness of the connection of the suction nozzle in a continuously moving state.

[0023] 6) The output end of the third driving mechanism of the present invention is arranged downward and fixedly connected to a corresponding threaded tube. The upper part of the connecting block is fixedly connected to the threaded tube by threaded connection, so that the upper part of the first elastic member can be fixedly sleeved in the threaded tube. In order to ensure that the upper mold top block has sufficient pre-pressure, the first elastic member needs to have a long compression stroke. Through the intervention of the threaded tube, the connecting block can be conveniently installed, and the first elastic member with a long stroke can be installed under the premise of compact structure.

[0024] 7) The top of the bottom mold base of the present invention is recessed downward with a corresponding fixing hole, and a corresponding base elastic ring is movably installed upward in the fixing hole through a corresponding second elastic member, and the base elastic ring extends to the upper side of the top of the bottom mold base. During the sealing and pressing process, the base elastic ring effectively forms an elastic buffer installation for the button battery manufacturing material under the action of the second elastic member, thereby cooperating with the upper mold top block to enhance the pre-clamping and fixing effect of the button battery manufacturing material; and a bottom mold fixing block is fixedly installed at the fixing hole of the bottom mold base of the present invention, and with the intervention of the bottom mold fixing block, the base elastic ring and the second elastic member can be conveniently disassembled and assembled. When it is necessary to clean the electrolyte accumulated on the bottom mold base, the base elastic ring can be removed, and then the bottom mold fixing block with the second elastic member can be removed, which is very convenient.

[0025] 8) During the process of adding electrolyte, the electrolyte adding device of the present invention firstly unscrews the bottle cap of the electrolyte container bottle by rotating the clamp and fixes the bottle cap on the rotating clamp; then, the electrolyte pipette gun moves left and descends to fix the pipette gun head fixed on the gun head fixing box body to the end of the electrolyte pipette gun, and then the electrolyte pipette gun rises and moves right; after the electrolyte pipette gun moves to the position of the electrolyte container bottle, the electrolyte pipette gun moves down and starts to extract liquid; after the electrolyte extraction is completed, the electrolyte pipette gun is The gun rises and moves outward to the position where the bottom mold seat is located to add electrolyte; after completing a single electrolyte transfer and addition, the electrolyte pipetting gun moves right to the upper side of the gun tip recovery box, and then the end of the electrolyte pipetting gun is blown off by the pipetting gun tip, so that the pipetting gun tip is recovered into the gun tip recovery box; after cycling several times of electrolyte transfer and addition, the bottle cap is screwed back to the electrolyte container bottle by rotating the clamp, and then the empty electrolyte container bottle is taken out by the loading device, and the new electrolyte container bottle filled with electrolyte is loaded and clamped in place again. This can effectively improve the automation level of each process such as electrolyte acquisition, transfer and addition, and pipetting gun tip replacement, as well as the smoothness of connection, thereby meeting the realization of the fully automated process of electrolyte addition in the assembly process.

[0026] 9) A corresponding mounting part is fixedly installed on the right side of the electrolyte pipette gun of the present invention, and a receiving piece located on the bottom side of the end of the electrolyte pipette gun is swingably mounted on the mounting part. The receiving piece is provided with a liquid collecting chamber corresponding to the end of the electrolyte pipette gun, and the receiving piece is swing-driven by a corresponding swing driving mechanism. When the swing driving mechanism drives the receiving piece to swing upward, there is no longer any obstruction on the bottom side of the end of the electrolyte pipette gun, and normal electrolyte loading and unloading actions can be performed at this time; and during the transfer of the electrolyte, the receiving piece is driven to swing downward by the swing driving mechanism to collect the electrolyte dripping along the end of the electrolyte pipette gun through the liquid collecting chamber provided on the receiving piece, thereby effectively preventing contamination of the button battery assembly equipment.

[0027] 10) The present invention first obtains the packaging multivariate Gaussian probability distribution related to various parameters such as packaging pressure values, and obtains at least 10 points of optimal results based on the acquisition function in Bayesian optimization as test assembly parameters, and then uses an open circuit voltage detector to perform open circuit voltage detection on the products composed of each group of test assembly parameters, and selects the test assembly parameters with the highest open circuit voltage value as the assembly parameters of the product, thereby effectively ensuring that the assembled product has higher performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention.

[0029] Figure 2 It is a structural schematic diagram of the feeding device.

[0030] Figure 3 It is the assembly diagram of the material tray picking mechanism and the button battery material picking mechanism.

[0031] Figure 4 for Figure 3 Exploded view of parts.

[0032] Figure 5 This is a cross-sectional view of the button battery material removal mechanism.

[0033] Figure 6 This is a structural diagram of the material positioning platform.

[0034] Figure 7 It is a structural schematic diagram of the sealing and pressing device.

[0035] Figure 8 It is a cross-sectional view of the sealing and pressing device.

[0036] Fig. 9 It is a cross-sectional view of the sealing upper mold assembly.

[0037] Fig.10 It is a cross-sectional view of the sealing bottom mold assembly.

[0038] Fig.11 This is a schematic diagram of the structure of the electrolyte adding device.

[0039] Fig.12 This is a schematic diagram of the structure of the other side of the electrolyte adding device.

[0040] Fig.13 It is a structural schematic diagram of the material fixing mechanism.

[0041] In the accompanying drawings: a rotating motor 1, a first driving mechanism 2, a material tray taking mechanism 3, an electromagnet 301, a magnetic metal part 302, a connecting part 4, a material tray 5, a material for making button batteries 6, a button battery material taking mechanism 7, a suction nozzle installation assembly 701, a fixing plate 7011, an L-shaped plate 7012, a suction nozzle 702, a sealing bottom mold assembly 8, a bottom mold seat 801, a second driving mechanism 802, a sealing upper mold assembly 9, a connecting block 901, a third driving mechanism 902, an upper mold pressing block 903, an upper mold top block 904, a first elastic part 905, an air blowing mechanism 10, an air guide cavity 1001, an air inlet hole 1002, an air blowing hole 1003, an electrolyte pipette gun 11, a fourth driving mechanism 12, and a material positioning platform 1 301, driving cylinder 14, stacking workbench 15, locking hole 16, locking convex edge 17, locking bolt 18, tightening spring 19, L-shaped connecting block 20, fixed mounting plate 21, guide block 22, slot 23, threaded tube 24, second elastic member 25, base spring ring 26, bottom mold fixing block 27, material fixing mechanism 28, fixed bracket 2801, fixed clamping jaw 2802, gun head fixing box 2803, gun head recovery box 2804, electrolyte container bottle 29, pipetting gun head 30, rotating clamping jaw 31, mounting part 32, material receiving part 33, liquid collecting chamber 34, swing driving mechanism 35, swing rod 3501, driving motor 3502, gear convex edge 36, clamping clamping jaw 37, open circuit voltage detector. DETAILED DESCRIPTION

[0042] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the embodiments in conjunction with the accompanying drawings: Embodiment 1 refer to Figure 1-13 , a button battery assembly device, including a feeding device, an electrolyte adding device and a sealing device, The feeding device comprises: A rotating motor 1 is driven by a corresponding first driving mechanism 2, wherein the output shaft end of the rotating motor 1 is arranged downward; The material tray taking mechanism 3 comprises an electromagnet 301 which is connected to the lower side of the output shaft end of the rotating motor 1 through a corresponding connecting piece 4, and a magnetic metal piece 302 which is fixed to the corresponding material tray 5, and the material tray 5 is respectively embedded with button battery manufacturing materials 6; The button battery material taking mechanism 7 comprises a plurality of suction nozzle mounting assemblies 701 fixedly connected to the outer bottom of the connecting member 4, and the suction nozzle mounting assemblies 701 are respectively downwardly mounted with suction nozzles for adsorbing and fixing the button battery manufacturing material 6 on the material tray; The sealing device comprises: The sealing and pressing bottom die assembly 8 comprises a bottom die seat 801 movably mounted on the corresponding sealing and pressing workbench, and the bottom die seat 801 is driven by the corresponding second driving mechanism 802; The sealing upper die assembly 9 comprises a connecting block 901 which can be lifted and lowered on the upper side of the sealing workbench, the connecting block 901 is driven by a corresponding third driving mechanism 902, a corresponding upper die pressing block 903 is fixedly installed on the bottom side of the connecting block 901, a corresponding upper die top block 904 is movably installed through the middle of the upper die pressing block 903, the top of the upper die top block 904 is connected to the connecting block 901 through a first elastic member 905, and the bottom of the upper die top block 904 extends to the lower side of the bottom end of the upper die pressing block 903; The blowing mechanism 10 comprises an air guiding cavity 1001 arranged on the connecting block 901, an air inlet hole 1002 connected to the air guiding cavity 1001 is arranged on the connecting block 901, and a plurality of blowing holes 1003 connected to the air guiding cavity 1001 are evenly arranged on the upper mold top block 904; The electrolyte adding device comprises: The electrolyte pipette gun 11 is driven by a corresponding fourth driving mechanism 12, and the electrolyte is quantitatively added between the button battery manufacturing materials 6 during the stacking process through the electrolyte pipette gun 11.

[0043] The present invention uses the electromagnet 301 of the feeding device to cooperate with the magnetic metal part 302 fixed to the material tray 5 to absorb and move the material tray 5 embedded with the button battery manufacturing material 6 to the material positioning platform 1301, and then uses the suction nozzle to absorb and move the button battery manufacturing material 6 embedded on the material tray 5 to stack it on the bottom mold seat 801 of the sealing and pressing device; the electrolyte is quantitatively added between the button battery manufacturing materials 6 in the stacking process through the electrolyte transfer gun 11, and then the sealing and pressing upper mold assembly 9 moves downward to cooperate with the bottom mold seat 801 to seal and press the stacked button battery manufacturing materials 6 added with electrolyte. Thus, the rapid sealing and pressing assembly of button batteries is fully automated.

[0044] The feeding device of the present invention can realize the installation of the electromagnet 301 of the material tray picking mechanism 3 and the button battery material picking mechanism 7 through the intervention of the connecting piece 4. During the feeding process, the material tray 5 located on the stacking workbench 15 can be adsorbed and moved to the material positioning platform 1301 by the electromagnet 301 of the material tray picking mechanism 3 arranged on the rotating motor 1 and the magnetic metal part 302 fixedly connected to the corresponding material tray 5. Then, the button battery production material 6 embedded on the material tray 5 can be adsorbed and moved to the bottom mold seat 801 of the sealing and pressing device through the suction nozzle 702, thereby significantly improving the feeding adaptability and feeding efficiency of the present invention to meet the realization of the fully automated feeding process of the assembly process.

[0045] During the process of sealing and pressing the product by the sealing and pressing device of the present invention, first, the connecting block 901 moves downward to drive the upper mold top block 904 to pre-compress and fix the button battery making material 6 under the elastic force of the first elastic member 905; then, the connecting block 901 continues to move downward to drive the upper mold pressing block 903 to press onto the top of the positioned button battery making material 6. During this process, the bottom of the upper mold top block 904 shrinks inward to be flush with the bottom of the upper mold pressing block 903, thereby effectively and accurately sealing and pressing the button battery making material.

[0046] The sealing device is also provided with an air blowing mechanism 10. During the downward movement of the connecting block 901, external compressed gas enters the air guide cavity 1001 through the air inlet hole 1002 of the air blowing mechanism 10, and is blown out along the air blowing hole 1003 of the upper mold top block 904 to blow off the electrolyte attached to the sealing upper mold assembly 9, thereby effectively removing the electrolyte attached to the sealing upper mold assembly 9, so as to effectively prevent the influence caused by the overflow of the electrolyte, thereby ensuring that the sealing process continues effectively.

[0047] The feeding device also includes a feeding workbench 13, on which a corresponding material positioning platform 1301 is movably installed. The material positioning platform 1301 is driven by a driving cylinder 14 fixedly installed on the feeding workbench 13, and a corresponding stacking workbench 15 is fixedly installed on the outer side of the feeding workbench 13.

[0048] The suction nozzle installation assembly 701 includes a fixed plate 7011 fixedly connected to the outer side of the connecting member 4, and a corresponding L-shaped plate 7012 can be lifted and lowered on the fixed plate 7011, and the suction nozzles 702 are fixedly installed on the bottom sides of the corresponding L-shaped plates 7012; corresponding sliding grooves are respectively provided on the fixed plate 7011, and the L-shaped plates 7012 can be movably connected to the sliding grooves, and a corresponding locking hole 16 is provided at the bottom of the L-shaped plate 7012, and a circle of corresponding locking protrusions 17 is provided in the middle of the locking hole 16, and the corresponding locking bolts 18 pass through the locking holes 16 to lock the L-shaped plate 7012 to the fixed plate 7011, and a set of tensioning springs 19 provided at the end of the rod of the locking bolt 18 are squeezed and installed between the locking protrusion 17 and the bottom of the fixed plate 7011.

[0049] The present invention improves the design of the fixed plate 7011 and the L-shaped plate 7012 of the suction nozzle mounting assembly 701 to ensure the sliding accuracy between the fixed plate 7011 and the L-shaped plate 7012; then, by intervening components such as the lock hole 16, the lock protrusion 17, and the tightening spring 19, the position of the L-shaped plate 7012 can be adjusted, thereby effectively achieving the position of the L-shaped plate 7012 under the premise of high-precision position adjustment, so as to ensure high-precision adjustment of the installation position of the suction nozzle 702 of the button battery material picking mechanism 7, thereby ensuring the stability of the adsorption of the material, and further satisfying the realization of the fully automated loading process of the assembly process.

[0050] The suction nozzles 702 are fixedly connected to the bottom sides of the L-shaped plates 7012 through corresponding L-shaped connecting blocks 20, there are four suction nozzle mounting assemblies 701, a cross-shaped fixed mounting plate 21 is fixedly mounted on the connecting member 4, and corresponding mounting grooves are respectively recessed in four directions of the fixed mounting plate 21, and the fixed plate members 7011 of the suction nozzle mounting assembly 701 are respectively fixedly snapped into the corresponding mounting grooves, and corresponding guide blocks 22 are respectively fixedly connected to the inner sides of the fixed plate members 7011, and corresponding card grooves 23 are respectively arranged on the sides of the guide blocks 22 that are not mounted to the fixed plate members 7011, and the card grooves 23 are respectively spaced apart from the bottom of the mounting grooves on the fixed mounting plate 21.

[0051] The connecting air pipe of the suction nozzle 702 of the present invention can directly extend outward along the gap between the card slot 23 and the mounting slot. The card slot 23 on the guide block 22 cooperates with the mounting slot on the fixed mounting plate 21 to fix the end of the connecting air pipe of the suction nozzle, thereby effectively ensuring the air tightness of the connection of the suction nozzle in a continuously moving state.

[0052] The output end of the third driving mechanism 902 is arranged downward and fixedly connected to a corresponding threaded tube 24 downwardly. The upper part of the connecting block 901 is fixedly connected to the threaded tube 24 by a threaded connection. The upper part of the first elastic member 905 is fixedly sleeved in the threaded tube 24.

[0053] To ensure that the upper mold top block 904 has sufficient pre-pressure, the first elastic member 905 needs to have a longer compression stroke. Through the intervention of the threaded tube 24, the connecting block 901 can be easily installed, and the first elastic member 905 with a longer stroke can be installed under the premise of a compact structure.

[0054] A corresponding fixing hole is recessed downward at the top of the bottom mold base 801, and a corresponding base elastic ring 26 is movably installed upward in the fixing hole through a corresponding second elastic member 25, and the base elastic ring 26 extends to the upper side of the top of the bottom mold base 801; a corresponding bottom mold fixing block 27 is installed at the fixing hole of the bottom mold base 801, and the bottom of the bottom mold fixing block 27 is closed and inserted into the bottom of the fixing hole, and the top of the bottom mold fixing block 27 is spaced from the fixing hole, and the top of the bottom mold fixing block 27 extends to the upper side of the fixing hole of the bottom mold base 801, and the base elastic ring 26 and the second elastic member 25 are fixedly sleeved between the bottom mold fixing block 27 and the fixing hole according to height.

[0055] During the sealing and pressing process, the base elastic ring 26, under the action of the second elastic member 25, effectively forms an elastic buffer installation for the button battery manufacturing material 6, thereby cooperating with the upper mold top block 904 to enhance the pre-clamping and fixing effect of the button battery manufacturing material 6; and the bottom mold fixing block 27 is fixedly installed at the fixing hole of the bottom mold base 801 of the present invention, and with the intervention of the bottom mold fixing block 27, the base elastic ring 26 and the second elastic member 25 can be conveniently disassembled and assembled. When it is necessary to clean the electrolyte accumulated on the bottom mold base 801, the base elastic ring 26 can be removed, and then the bottom mold fixing block 27 with the second elastic member 25 can be removed, which is very convenient.

[0056] The electrolyte adding device also includes a material fixing mechanism 28, and the material fixing mechanism 28 includes a fixed bracket 2801 arranged on the bottom side of the fourth driving mechanism 12, and a fixed clamp 2802 for fixing an electrolyte container bottle 29 filled with electrolyte is fixedly installed in the middle of the fixed bracket 2801, and a pipette tip fixing box 2803 for fixing the pipette tip 30 is fixedly installed on the left side of the fixed bracket 2801, and a pipette tip recovery box 2804 is fixedly installed on the right side of the fixed bracket 2801, and a corresponding rotating clamp 31 is fixedly installed on the left side of the electrolyte pipette gun 11.

[0057] During the process of adding electrolyte, the electrolyte adding device of the present invention firstly unscrews the bottle cap of the electrolyte container bottle 29 by rotating the clamp 31, and fixes the bottle cap on the rotating clamp 31; then, the electrolyte pipette gun 11 moves left and descends, so that the pipette gun head 30 fixed on the gun head fixing box body 2803 is fixedly plugged into the end of the electrolyte pipette gun 11, and then the electrolyte pipette gun 11 rises and moves right; after the electrolyte pipette gun 11 moves to the position of the electrolyte container bottle 29, the electrolyte pipette gun 11 moves down and starts to extract liquid; after completing the electrolyte extraction, the electrolyte pipette gun 11 moves up Lift and move outward to the position where the bottom mold base 801 is located to add electrolyte; after completing a single electrolyte transfer and addition, the electrolyte pipette gun 11 moves right to the upper side of the gun head recovery box 2804, and then the pipette gun head 30 is blown off the end of the electrolyte pipette gun 11, so that the pipette gun head 30 is recovered into the gun head recovery box 2804; after cycling several times of electrolyte transfer and addition, the bottle cap is screwed back to the electrolyte container bottle 29 by rotating the clamp 31, and then the empty electrolyte container 29 bottle is taken out by the loading device, and the new electrolyte container bottle 29 filled with electrolyte is loaded and clamped in place again. This can effectively improve the degree of automation of each process such as electrolyte acquisition, transfer and addition, and replacement of the pipette gun head 30, as well as the smoothness of connection, thereby meeting the realization of the fully automated process of electrolyte addition in the assembly process.

[0058] A corresponding mounting part 32 is fixedly installed on the right side of the electrolyte pipette gun 11, and a material receiving part 33 located on the bottom side of the end of the electrolyte pipette gun 11 can be swingably installed on the mounting part 32, and a liquid collecting chamber 34 corresponding to the end of the electrolyte pipette gun 11 is provided on the material receiving part 33, and the material receiving part 33 is swing-driven by a corresponding swing driving mechanism 35; the swing driving mechanism 35 includes a group of swing rods 3501 hinged on the mounting part 32, and the ends of the swing rods 3501 that are not hinged to the mounting part 32 are respectively hinged to the material receiving part 33, and one of the swing rods 3501 is transmission-connected to the output shaft end of the driving motor 3502 installed on the mounting part 32.

[0059] When the swing drive mechanism 35 drives the receiving piece 33 to swing upward, the bottom side of the end of the electrolyte pipette gun 11 is no longer blocked, and normal electrolyte loading and unloading operations can be performed at this time; and during the transfer of the electrolyte, the swing drive mechanism 35 drives the receiving piece 33 to swing downward, so that the electrolyte dripping along the end of the electrolyte pipette gun 11 can be collected through the liquid collecting chamber 34 arranged on the receiving piece 33, thereby effectively preventing contamination of the button battery assembly equipment.

[0060] The fixed bracket 2801 is provided with corresponding gear ridges 36 at positions corresponding to the gun tip fixing box body 2803 and the gun tip recovery box 2804, and the gun tip fixing box body 2803 and the gun tip recovery box 2804 are respectively fixedly embedded in the inner sides of the corresponding gear ridges 36; the fixed bracket 2801 is provided with a clamping claw 37 for clamping and fixing the gun tip fixing box body 2803.

[0061] The first driving mechanism 2 adopts a robot, the second driving mechanism 802 and the third driving mechanism 902 adopt a screw driving mechanism, and the fourth driving mechanism 12 adopts a three-axis motion mechanism.

[0062] Embodiment 2 The button cell assembly equipment in this embodiment further includes an open circuit voltage detector 38 for detecting the open circuit voltage of the button cell after assembly. The button cell manufacturing material 6 includes a positive electrode shell, a pole piece, a diaphragm, a lithium sheet, a gasket, a spring, and a negative electrode shell; The control method of the button battery assembly equipment comprises: The packaging pressure value, mean value and variance of the sealing device are defined as: 1 , μ 1 , σ 1 ; The packaging pressing holding time value, mean, and variance are: x 2 , μ 2 , σ 2 ; The thickness, mean and variance of the positive electrode shell are: x 3 , μ 3 , σ 3 ; The diameter, mean, and variance of the positive electrode sheet are: x 4 , μ 4 , σ 4 ; The thickness, mean and variance of the negative electrode shell are: x 5 , μ 5 , σ 5 ; The diameter, mean, and variance of the negative electrode sheet are: x 6 , μ 6 , σ 6 ; The electrolyte addition amount, mean, and variance are: x 7 , μ 7 , σ 7 ; The gasket thickness value, mean, and variance are: x 8 , μ 8 , σ 8 ; The thickness, mean, and variance of the spring are: x 9 , μ 9 , σ 9 ; The packaging multivariate Gaussian probability distribution of the sealing device is calculated according to the following formula: ; Through the multivariate Gaussian probability distribution and based on the acquisition function in Bayesian optimization, 10 points predicted to produce the optimal results are selected as test assembly parameters. After the products composed of each group of test assembly parameters are packaged, the open circuit voltage of the products composed of each group of test assembly parameters is detected through the open circuit voltage detector 38, and the test assembly parameter with the highest open circuit voltage value is selected as the assembly parameter of the product.

[0063] The present invention first obtains the packaging multivariate Gaussian probability distribution of various parameters such as the packaging pressure value, and obtains 10 points of the optimal results based on the acquisition function in the Bayesian optimization as the test assembly parameters, and then uses the open circuit voltage detector 38 to detect the open circuit voltage of the products composed of each group of test assembly parameters, and selects the test assembly parameters with the highest open circuit voltage value as the assembly parameters of the product, thereby effectively ensuring that the assembled product has higher performance.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A button battery assembly device, comprising a feeding device, an electrolyte adding device and a sealing device, characterized in that: The feeding device comprises: A rotating motor (1) is driven by a corresponding first driving mechanism (2), wherein the output shaft end of the rotating motor (1) is arranged downward; The material tray taking mechanism (3) comprises an electromagnet (301) which is transmission-connected to the lower side of the output shaft end of the rotating motor (1) through a corresponding connecting piece (4), and a magnetic metal piece (302) fixedly connected to a corresponding material tray (5), wherein the material tray (5) is respectively embedded with materials (6) for making button batteries; A button cell material taking mechanism (7) comprises a plurality of suction nozzle mounting assemblies (701) fixedly connected to the outer bottom of the connecting member (4), wherein each of the suction nozzle mounting assemblies (701) is provided with a suction nozzle facing downwards for adsorbing and fixing the button cell manufacturing material (6) on the material tray; The sealing device comprises: A sealing and pressing bottom die assembly (8), comprising a bottom die seat (801) movably mounted on a corresponding sealing and pressing workbench, wherein the bottom die seat (801) is driven by a corresponding second driving mechanism (802); The sealing upper die assembly (9) comprises a connecting block (901) which is movably arranged on the upper side of the sealing workbench, the connecting block (901) being driven by a corresponding third driving mechanism (902), a corresponding upper die pressing block (903) being fixedly mounted on the bottom side of the connecting block (901), a corresponding upper die top block (904) being movably installed through the middle of the upper die pressing block (903), the top of the upper die top block (904) being connected to the connecting block (901) via a first elastic member (905), and the bottom of the upper die top block (904) extending to the lower side of the bottom end of the upper die pressing block (903); The blowing mechanism (10) comprises an air guide cavity (1001) arranged on the connecting block (901), the connecting block (901) is provided with an air inlet hole (1002) connected to the air guide cavity (1001), and the upper mold top block (904) is evenly provided with a plurality of blowing holes (1003) connected to the air guide cavity (1001); The electrolyte adding device comprises: An electrolyte pipette gun (11), wherein the electrolyte pipette gun (11) is driven by a corresponding fourth driving mechanism (12), and electrolyte is quantitatively added between the button battery manufacturing materials (6) during the stacking process through the electrolyte pipette gun (11).

2. A button battery assembly device according to claim 1, characterized in that: The loading device further comprises a loading workbench (13), on which a corresponding material positioning platform (1301) is movably mounted, and the material positioning platform (1301) is driven by a driving cylinder (14) fixedly mounted on the loading workbench (13), and a corresponding material stacking workbench (15) is fixedly mounted on the outer side of the loading workbench (13).

3. The button battery assembly equipment according to claim 1, characterized in that: The suction nozzle installation assembly (701) comprises a fixed plate (7011) fixedly connected to the outer side of the connecting member (4); a corresponding L-shaped plate (7012) is installed on the fixed plate (7011) in a lifting manner; the suction nozzles (702) are fixedly installed on the bottom sides of the corresponding L-shaped plates (7012); corresponding sliding grooves are respectively arranged on the fixed plate (7011); the L-shaped plates (7012) are respectively movably connected to the sliding grooves; the L-shaped plates (7012) are respectively A corresponding locking hole (16) is provided at the bottom, a circle of corresponding locking protrusions (17) is provided in the middle of the locking hole (16), and a corresponding locking bolt (18) passes through the locking hole (16) to lock and install the L-shaped plate (7012) on the fixed plate (7011), and a set of tensioning springs (19) provided on the end of the rod of the locking bolt (18) are pressed and installed between the locking protrusion (17) and the bottom of the fixed plate (7011).

4. The button battery assembly equipment according to claim 3, characterized in that: The suction nozzles (702) are fixedly connected to the bottom side of the L-shaped plate (7012) through corresponding L-shaped connecting blocks (20), there are four suction nozzle mounting assemblies (701), a cross-shaped fixed mounting plate (21) is fixedly mounted on the connecting member (4), four directions of the fixed mounting plate (21) are respectively provided with corresponding mounting grooves, the fixed plate members (7011) of the suction nozzle mounting assembly (701) are respectively fixedly clamped into the corresponding mounting grooves, the inner sides of the fixed plate members (7011) are respectively fixedly connected with corresponding guide blocks (22), the sides of the guide blocks (22) not mounted on the fixed plate members (7011) are respectively provided with corresponding clamping grooves (23), and the clamping grooves (23) are respectively arranged at intervals from the bottom of the mounting grooves on the fixed mounting plate (21).

5. The button battery assembly equipment according to claim 1, characterized in that: The output end of the third driving mechanism (902) is arranged downward and fixedly connected downwardly to a corresponding threaded tube (24); the upper part of the connecting block (901) is fixedly connected to the threaded tube (24) by means of a threaded connection; and the upper part of the first elastic member (905) is fixedly sleeved in the threaded tube (24).

6. The button battery assembly equipment according to claim 1, characterized in that: A corresponding fixing hole is recessed downward at the top of the bottom mold base (801), and a corresponding base elastic ring (26) is movably installed upward in the fixing hole through a corresponding second elastic member (25), and the base elastic ring (26) extends to the upper side of the top of the bottom mold base (801); a corresponding bottom mold fixing block (27) is installed at the fixing hole of the bottom mold base (801), and the bottom of the bottom mold fixing block (27) is closed and plugged into the bottom of the fixing hole, and the top of the bottom mold fixing block (27) is spaced from the fixing hole, and the top of the bottom mold fixing block (27) extends to the upper side of the fixing hole of the bottom mold base (801), and the base elastic ring (26) and the second elastic member (25) are fixedly sleeved between the bottom mold fixing block (27) and the fixing hole according to height.

7. The button battery assembly equipment according to claim 1, characterized in that: The electrolyte adding device also includes a material fixing mechanism (28), the material fixing mechanism (28) includes a fixing bracket (2801) arranged on the bottom side of the fourth driving mechanism (12), a fixing clamp (2802) for fixing an electrolyte container bottle (29) filled with electrolyte is fixedly installed in the middle of the fixing bracket (2801), a tip fixing box (2803) for fixing a pipette tip (30) is fixedly installed on the left side of the fixing bracket (2801), a tip recovery box (2804) is fixedly installed on the right side of the fixing bracket (2801), and a corresponding rotating clamp (31) is fixedly installed on the left side of the electrolyte pipette gun (11).

8. The button battery assembly equipment according to claim 7, characterized in that: A corresponding mounting member (32) is fixedly mounted on the right side of the electrolyte pipette gun (11); a material receiving member (33) located at the bottom side of the end of the electrolyte pipette gun (11) is swingably mounted on the mounting member (32); a liquid collecting chamber (34) corresponding to the end of the electrolyte pipette gun (11) is provided on the material receiving member (33); the material receiving member (33) is swingably driven by a corresponding swing driving mechanism (35); the swing driving mechanism (35) comprises a group of swinging rods (3501) hinged on the mounting member (32); the ends of the swinging rods (3501) not hinged on the mounting member (32) are respectively hinged on the material receiving member (33); one of the swinging rods (3501) is transmission-connected to the output shaft end of a driving motor (3502) mounted on the mounting member (32).

9. The button battery assembly equipment according to claim 8, characterized in that: The fixed bracket (2801) is provided with corresponding shifting ridges (36) at positions corresponding to the gun tip fixing box (2803) and the gun tip recovery box (2804), and the gun tip fixing box (2803) and the gun tip recovery box (2804) are respectively fixedly embedded in the inner sides of the corresponding shifting ridges (36); the fixed bracket (2801) is provided with a clamping claw (37) for clamping and fixing the gun tip fixing box (2803); the first driving mechanism (2) adopts a manipulator, the second driving mechanism (802) and the third driving mechanism (902) adopt a screw driving mechanism, and the fourth driving mechanism (12) adopts a three-axis motion mechanism.

10. The button battery assembly equipment according to claim 1, characterized in that: The button cell assembly equipment further comprises an open circuit voltage detector (38) for detecting the open circuit voltage of the button cell after assembly. The button cell manufacturing materials (6) comprise a positive electrode shell, a positive electrode sheet, a diaphragm, a negative electrode sheet, a gasket, a spring, and a negative electrode shell; The control method of the button battery assembly equipment comprises: The packaging pressure value, mean value and variance of the sealing and pressing device are defined as x1, μ1 and σ1 respectively; the packaging and pressing holding time value, mean value and variance are x2, μ2 and σ2 respectively; the positive electrode shell thickness value, mean value and variance are x3, μ3 and σ3 respectively; the positive electrode sheet diameter value, mean value and variance are x4, μ4 and σ4 respectively; the negative electrode shell thickness value, mean value and variance are x5, μ5 and σ5 respectively; the negative electrode sheet diameter value, mean value and variance are x6, μ6 and σ6 respectively; the electrolyte addition amount value, mean value and variance are x7, μ7 and σ7 respectively; the gasket thickness value, mean value and variance are x8, μ8 and σ8 respectively; the spring sheet thickness value, mean value and variance are x9, μ9 and σ9 respectively; The packaging multivariate Gaussian probability distribution of the sealing device is calculated according to the following formula: ； Through the multivariate Gaussian probability distribution, based on the acquisition function in Bayesian optimization, at least 10 points predicted to produce the best results are selected as test assembly parameters. After the products composed of each group of test assembly parameters are packaged, the open circuit voltage of the products composed of each group of test assembly parameters is detected by the open circuit voltage detector (38), and the test assembly parameter with the highest open circuit voltage value is selected as the assembly parameter of the product.

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