Lithium battery cap assembly machine and assembly process thereof

Abstract

The lithium battery cap assembly machine comprises a main machine frame, an index plate, an anti-explosion piece feeding device, a top cover feeding device, a welding device, an edge covering device, a conveying mechanical arm, a shaping device, a rubber ring feeding device and an internal resistance measuring device, and the index plate is installed on the main machine frame; a plurality of sets of jigs arranged around the center axis of the index plate in the circumferential direction are installed in the index plate, the anti-explosion piece feeding device drives anti-explosion pieces to be conveyed to the jigs, the shaping device shapes products, the rubber ring feeding device drives rubber rings to be fed, and the internal resistance measuring device detects the internal resistance of the products. Various working procedures such as anti-explosion piece feeding, top cover feeding, welding, edge covering, shaping, rubber ring feeding and internal resistance measuring are completed on one machine, the automation degree is high, the lithium battery cap is rapidly assembled, the lithium battery cap does not need to be carried to another machine table for continuous shaping and internal resistance measuring, the production time is shortened, and the product competitiveness is enhanced.

Description

Technical Field

[0001] The present invention relates to the field of battery manufacturing equipment, and particularly relates to a lithium battery cap assembly machine and its assembly process. Background Art

[0002] The lithium battery cap is an important component of the lithium battery. As Figure 1 shown, the lithium battery cap generally consists of three parts: an explosion-proof film 01, a top cover 02, and a rubber ring 03. The machine used for assembling the lithium battery cap is a lithium battery cap assembly machine. The disadvantages of the existing lithium battery cap assembly machines are as follows: First, the degree of automation integration is low. After assembly, it needs to be transported to another machine to complete processes such as shaping and internal resistance measurement, resulting in an extended production cycle. Second, the layout design is unreasonable. The number of assembled lithium battery caps is small and the production speed is slow, resulting in high production costs and being unfavorable for product market competition. Summary of the Invention

[0003] In view of the above defects in the prior art, the present invention provides a lithium battery cap assembly machine and its assembly process. The specific technical solutions are as follows:

[0004] A lithium battery cap assembly machine includes a main frame, an indexing disk, an explosion-proof film feeding device, a top cover feeding device, a welding device, a hemming device, a transfer manipulator, a shaping device, a rubber ring feeding device, and an internal resistance measuring device. The indexing disk is installed on the main frame, and multiple sets of jigs arranged circumferentially around the central axis of the indexing disk are installed in the indexing disk. The indexing disk rotates to make the jigs pass through the explosion-proof film feeding device, the top cover feeding device, the welding device, and the hemming device in sequence. The explosion-proof film feeding device drives the explosion-proof film to be transported to the jig, the top cover feeding device drives the top cover to be transported to the jig, the welding device welds the explosion-proof film and the top cover in the jig into one body, the hemming device drives the outer edge of the top cover to be hemmed, the transfer manipulator drives the hemmed product to pass through the shaping device, the rubber ring feeding device, and the internal resistance measuring device in sequence. The shaping device shapes the product, the rubber ring feeding device drives the rubber ring to be fed, and the internal resistance measuring device detects the internal resistance of the product.

[0005] As a preferred solution of the present invention, the explosion-proof film feeding device drives four explosion-proof films to be transported to the jig at a time, and each group of jigs has four jigs corresponding to the number of explosion-proof films respectively.

[0006] As a preferred embodiment of the present invention, the explosion-proof film feeding device includes an explosion-proof film vibrating bowl, a linear vibrating mechanism, and a picking mechanism. The explosion-proof film vibrating bowl drives the explosion-proof film to the linear vibrating mechanism, the linear vibrating mechanism drives the explosion-proof film to move forward, and the picking mechanism drives the explosion-proof film to be transferred from the linear vibrating mechanism to the indexing disc. The linear vibrating mechanism is provided with four linear vibrating channels, the picking mechanism is provided with four picking heads, and multiple groups of jigs arranged circumferentially around the central axis of the indexing disc are installed in the indexing disc. Each group of jigs has four jigs. The picking head picks up the explosion-proof film at the front end of the linear vibrating channel and transfers it into the jig. The explosion-proof film vibrating bowl is provided with four material outlets, and the explosion-proof film vibrating bowl vibrates to discharge four lithium battery caps from the four material outlets into the linear vibrating channels respectively. A limit block allowing a single explosion-proof film to enter is installed at the front end of each linear vibrating channel, and a sensor is installed at the bottom of the limit block. The picking mechanism includes a lifting block, a sliding block, a sliding rail, a lifting cylinder, a transverse moving block, and a transverse moving cylinder. Four picking heads are installed in front of the lifting block, a sliding block is installed behind the lifting block, the sliding block is slidably connected to the sliding rail, the sliding rail is vertically installed on the transverse moving block, the lifting cylinder drives the lifting block to move up and down, and the transverse moving cylinder drives the transverse moving block to move back and forth.

[0007] As a preferred embodiment of the present invention, the shaping device includes a fixed seat, a stamping power mechanism, a stamping slider, an upper shaping die, a lower shaping die, a lower die seat, and a ejector rod. The stamping power mechanism is installed in the fixed seat, multiple stamping sliders are slidably installed in front of the fixed seat, there are multiple upper shaping dies and multiple lower shaping dies respectively. The upper shaping die is located above the lower shaping die, the lower shaping die is installed above the lower die seat, the lower shaping die is provided with a shaping cavity for the lithium battery cap to enter, multiple ejector rods are installed in the lower die seat, and the ejector rods are used to eject the lithium battery cap in the shaping cavity. When multiple stamping sliders drive multiple upper shaping dies to move down, multiple upper shaping dies and multiple lower shaping dies are closed to shape multiple lithium battery caps.

[0008] As a preferred embodiment of the present invention, multiple stamping sliders, upper shaping dies, and lower shaping dies are arranged horizontally respectively. The upper shaping die includes a stamping suction head, a lifting block, a lifting slider, a return spring, an upper fixing block, and an upper shaping seat. The stamping suction head is installed in front of the lifting block, a lifting slider is installed behind the lifting block, the lifting slider is vertically slidably connected to the upper shaping seat, an upper fixing seat is installed above the upper shaping seat, one end of the return spring hooks the side of the lifting block and the other end hooks the upper fixing block. The upper shaping die is installed at the output end of the manipulator. The lower shaping die includes a lower shaping seat and a shaping head. The shaping head is installed in the lower shaping seat, and the shaping cavity is provided in the shaping head. The upper opening of the shaping cavity is a flared opening.

[0009] As a preferred embodiment of the present invention, the stamping power mechanism includes a motor, a rotating shaft, an eccentric wheel and a swing arm. The motor is installed on the side of the fixed seat. The output shaft of the motor is connected to the rotating shaft. The eccentric wheel is fixedly installed on the circumference of the rotating shaft. The eccentric wheel contacts the swing arm. The middle of the swing arm is rotatably installed on the fixed seat. The front end of the swing arm is connected to the stamping slider, and the rear end of the swing arm is connected to a spring. There are 2 eccentric wheels and 2 swing arms respectively. Two stamping sliders are connected in front of one swing arm.

[0010] As a preferred embodiment of the present invention, the internal resistance measuring device includes a battery cap transmission mechanism, a detection table, a probe detection mechanism, a material pushing plate, a material pushing cylinder, a blanking port and a blanking hopper. The front end of the battery cap transmission mechanism is docked with the detection table. The probe detection mechanism is installed in the detection table. The material pushing plate is provided with a material pushing port. The battery cap transmission mechanism drives the battery cap to move forward into the material pushing port. The probe detection mechanism measures the internal resistance of the battery cap in the material pushing port. The detection table is provided with a blanking port. The blanking hopper is installed below the detection table. The blanking hopper communicates with the blanking port. The material pushing cylinder is installed on the side of the detection table. The material pushing cylinder drives the material pushing plate to move horizontally so that the battery cap falls into the blanking port.

[0011] As a preferred embodiment of the present invention, there are 2 material pushing ports, 2 blanking ports and 2 blanking hoppers respectively. Two battery caps enter the material pushing port at a time. The battery cap transmission mechanism includes a main feeding frame, a conveyor belt, a motor and a synchronous pulley transmission assembly. The conveyor belt is installed in the main feeding frame. The motor is installed on the side of the main feeding frame. The motor drives the conveyor belt to rotate through the synchronous pulley transmission assembly. The battery caps are arranged on the conveyor belt.

[0012] As a preferred embodiment of the present invention, the probe detection mechanism includes an upper cylinder, an upper probe mounting block, an upper probe, a lower cylinder, a lower probe mounting block, a lower probe and an internal resistance tester. The upper cylinder is located above the detection table. The upper cylinder drives the upper probe mounting block to move downward. The upper probe is installed in the upper probe mounting block. The upper probe is used to contact the upper surface of the battery cap. The lower cylinder is located below the detection table. The lower cylinder drives the lower probe mounting block to move upward. The lower probe is installed in the lower probe mounting block. The lower probe is used to contact the lower surface of the battery cap. The upper probe and the lower probe are electrically connected to the internal resistance tester. There are two groups of upper probes, with 2 upper probes in each group. There are two groups of lower probes, with 2 lower probes in each group. The blanking hopper is in a V shape. The upper end of the blanking hopper is docked with the blanking port. A turning plate is installed in the blanking hopper. The turning cylinder drives the turning plate to rotate to change the discharging direction.

[0013] A lithium battery cap assembly process is completed using the above-mentioned lithium battery cap assembly machine, and it includes the following steps.

[0014] ① The explosion-proof sheet feeding device drives 4 explosion-proof sheets to be conveyed to the fixture.

[0015] ② The indexing disc rotates so that the jig reaches the top cover feeding device, and the top cover feeding device drives the top cover to be transported to the jig; ③ The indexing disc rotates so that the jig reaches the welding device, and the welding device welds the explosion-proof plate and the top cover in the jig into one;

[0016] ④The indexing disc rotates to make the jig reach the hemming device, and the hemming device drives the outer side of the top cover to hem;

[0017] ⑤ The transport robot drives the hemmed product to the shaping device, and the shaping device shapes the product;

[0018] ⑥ The transport robot drives the shaped product to the rubber ring loading device, and the rubber ring loading device drives the rubber ring loading;

[0019] ⑦ The transport robot drives the shaped products to the internal resistance measuring device, which detects the internal resistance of the products, and separates qualified products from unqualified products.

[0020] Beneficial effects: The lithium battery cap assembly machine and its assembly process are ingeniously and reasonably designed. Various processes such as explosion-proof plate loading, top cover loading, welding, edging, shaping, rubber ring loading, and internal resistance measurement can be completed in one machine. The degree of automation is high, and the lithium battery caps can be assembled quickly without being transported to another machine for further shaping, internal resistance measurement, etc., thereby reducing production time and enhancing product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional picture of the lithium battery cap;

[0022] Figure 2 It is an overall stereogram of the present invention;

[0023] Figure 3 is a top view of the present invention;

[0024] Figure 4 It is a three-dimensional diagram of the explosion-proof disk feeding device of the present invention cooperating with the indexing disk;

[0025] Figure 5 is a three-dimensional diagram of the explosion-proof disk feeding device of the present invention;

[0026] Figure 6 It is a three-dimensional diagram of the material taking mechanism of the present invention;

[0027] Figure 7 is a perspective view of the shaping device of the present invention;

[0028] Figure 8 is a three-dimensional diagram of the shaping device and the transport manipulator of the present invention;

[0029] Figure 9 is a stereoscopic diagram of the shaping device of the present invention from another viewing angle;

[0030] Figure 10 is a perspective view of the upper shaping die of the present invention;

[0031] Figure 11 is a perspective view of the lower shaping die of the present invention;

[0032] Figure 12 is a perspective view of the stamping power mechanism of the present invention;

[0033] Figure 13 is a perspective view of the internal resistance measuring device of the present invention;

[0034] Figure 14 is a perspective view of the internal resistance measuring device of the present invention from another perspective;

[0035] Figure 15 is a perspective view of the battery cap transmission mechanism of the present invention;

[0036] Figure 16 is a perspective view of the probe detection mechanism of the present invention;

[0037] Figure 17 is a perspective view of the cooperation between the detection table and the blanking hopper of the present invention;

[0038] Figure 18 is a perspective view of the cooperation between the blanking hopper and the tipping cylinder of the present invention. Detailed implementation manners

[0039] The following further describes the detailed implementation manners of the present invention with reference to the accompanying drawings:

[0040] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the position or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0041] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0042] Such as Figure 2 and 3As shown in the figure, a lithium battery cap assembly machine includes a main frame 1, an indexing disc 2, an explosion-proof film feeding device 3, a top cover feeding device 4, a welding device 5, a hemming device 6, a transport manipulator 7, a shaping device 8, a rubber ring feeding device 9, and an internal resistance measuring device 10. The indexing disc 2 is installed on the main frame 1, and multiple sets of jigs 11 arranged circumferentially around the central axis of the indexing disc 2 are installed in the indexing disc 2. The indexing disc 2 rotates to make the jigs pass through the explosion-proof film feeding device 3, the top cover feeding device 4, the welding device 5, and the hemming device 6 in sequence. The explosion-proof film feeding device 3 drives the explosion-proof film to be conveyed to the jig 11, the top cover feeding device 4 drives the top cover to be conveyed to the jig 11, the welding device 5 welds the explosion-proof film and the top cover in the jig into one body, and the hemming device 6 drives the hemming of the outer side edge of the top cover. The transport manipulator 7 drives the product after hemming to pass through the shaping device 8, the rubber ring feeding device 9, and the internal resistance measuring device 10 in sequence. The shaping device 8 shapes the product, the rubber ring feeding device 9 drives the rubber ring to be fed, and the internal resistance measuring device 10 detects the internal resistance of the product. The top cover feeding device 4, the welding device 5, the hemming device 6, and the rubber ring feeding device 9 are the prior art of the cap assembly machine and are not the focus of the present invention, so their specific structures will not be introduced in detail.

[0043] Specifically, the explosion-proof film feeding device 3 drives four explosion-proof films to be conveyed to the jig 11 at a time. Each set of jigs 11 has four jigs 11 corresponding to the number of explosion-proof films respectively. The top cover feeding device 4 has two groups and feeds four top covers in total. The rubber ring feeding device 9 feeds four rubber rings, realizing the four-station assembly of products and improving the efficiency.

[0044] Such as Figures 4 - 6As shown in the figure, the explosion-proof film loading device 3 includes an explosion-proof film vibrating bowl 31, a linear vibrating mechanism 32, and a material taking mechanism 33. The explosion-proof film vibrating bowl 31 drives the explosion-proof film to the linear vibrating mechanism 32, the linear vibrating mechanism 32 drives the explosion-proof film to move forward, and the material taking mechanism 33 drives the explosion-proof film to be transferred from the linear vibrating mechanism 32 to the indexing disc 2. The linear vibrating mechanism 32 is provided with four linear vibrating channels 321, the material taking mechanism 33 is provided with four material taking heads 331, and multiple groups of fixtures 11 arranged circumferentially around the central axis of the indexing disc are installed in the indexing disc 2. Each group of fixtures has four fixtures. The center of the indexing disc 2 is connected to a cam divider, and the cam divider drives the indexing disc 4 to rotate so that the fixtures are rotated to different stations to complete different processes. The material taking head 31 takes away the explosion-proof film at the front end of the linear vibrating channel 21 and transfers it into the fixture. The explosion-proof film vibrating bowl 31 is provided with four material outlets. The explosion-proof film vibrating bowl 31 vibrates to discharge four explosion-proof films from the four material outlets into the four linear vibrating channels 321 respectively. A limit block 36 that allows a single explosion-proof film to enter is installed at the front end of each linear vibrating channel. A sensor is installed at the bottom of the limit block 36. When the explosion-proof film is in place, the direct sensor emits a signal for the material taking mechanism 33 to take the material. The material taking mechanism 33 further includes a lifting block 332, a sliding block 333, a slide rail 334, a lifting cylinder 335, a transverse moving block 336, and a transverse moving cylinder 337. Four material taking heads 331 are installed in front of the lifting block 332, a sliding block 333 is installed behind the lifting block 332, the sliding block 333 is slidably connected to the slide rail 334, the slide rail 334 is vertically installed on the transverse moving block 336, the lifting cylinder 335 drives the lifting block 332 to move up and down, the transverse moving cylinder 337 drives the transverse moving block 336 to move back and forth, a buffer spring is installed at the material taking head 331, the material taking head is a suction head. After the material taking head 331 sucks the explosion-proof film, the lifting cylinder 335 and the transverse moving cylinder 337 act successively to make the material taking head 331 approach the fixture and load the explosion-proof film into the fixture.

[0045] As Figures 7 - 12As shown in the figure, the shaping device 8 includes a fixed seat 81, a stamping power mechanism 82, a stamping slider 83, an upper shaping die 84, a lower shaping die 85, a lower die base 86 and a ejector rod 87. The stamping power mechanism 82 is installed in the fixed seat 81. A plurality of stamping sliders 83 are slidably installed in front of the fixed seat 81. There are a plurality of upper shaping dies 84 and lower shaping dies 85 respectively. Preferably, a plurality of stamping sliders 83, upper shaping dies 84 and lower shaping dies 85 are arranged horizontally and there are 84 of each respectively. The upper shaping die 84 is located above the lower shaping die 85. A plurality of upper shaping dies 84 are installed at the output end of the transfer manipulator 7 and move to different work positions. The upper shaping die 84 sucks the product. The manipulator 7 drives the upper shaping die 84 to move horizontally to the shaping position. The lower shaping die 85 is installed above the lower die base 86. The lower shaping die 85 is provided with a shaping cavity 851 for the lithium battery cap to enter. A plurality of ejector rods 89 are installed in the lower die base 86. The ejector rods 89 can be driven by a cylinder or an oil cylinder or a cam mechanism to move upward. The ejector rods 89 are used to eject the lithium battery caps in the shaping cavity 851. When a plurality of stamping sliders 83 drive a plurality of upper shaping dies 84 to move downward, a plurality of upper shaping dies 84 and a plurality of lower shaping dies 85 are closed to shape a plurality of lithium battery caps. The stamping sliders 83, upper shaping dies 84 and lower shaping dies 85 are in one-to-one correspondence.

[0046] The upper shaping die 84 includes a stamping suction head 841, a lifting block 842, a lifting slider 843, a return spring 844, an upper fixing block 845 and an upper shaping seat 846. The stamping suction head 841 is installed in front of the lifting block 842. The lifting slider 843 is installed behind the lifting block 842. The lifting slider 843 is vertically slidably connected to the upper shaping seat 846. The upper fixing block 845 is installed above the upper shaping seat 846. One end of the return spring 844 hooks the side of the lifting block 842 and the other end hooks the upper fixing block 845. When the stamping power mechanism 2 drives the stamping slider 83 to move downward, the stamping slider 83 presses against the stamping suction head 841 and presses it downward. Since the stamping suction head 841 has previously sucked the lithium battery cap, the stamping suction head 841 pressing downward will press the product into the shaping cavity 851. Under the stamping and shaping action of a large impact force, the product is flattened and shaped. When the stamping power mechanism 82 no longer drives the stamping slider 83 to move downward, the return spring 844 will drive the stamping suction head 841 to move upward and reset.

[0047] The lower shaping die 85 includes a lower shaping base 852 and a shaping head 853. The shaping head 853 is installed in the lower shaping base 852. A shaping cavity 851 is provided in the shaping head 853. The upper end of the ejector rod 89 extends into the shaping cavity 851. The upper opening of the shaping cavity 51 is a flared opening. The stamping power mechanism 82 includes a motor 821, a rotating shaft 822, an eccentric wheel 823, and a swing arm 824. The motor 821 is installed on the side of the fixed seat 1. The output shaft of the motor is connected to the rotating shaft 822. The eccentric wheel 823 is fixedly installed on the circumferential side of the rotating shaft 822. The eccentric wheel 823 is in contact with the swing arm 824. The middle of the swing arm 824 is rotatably installed on the fixed seat 81. The front end of the swing arm 824 is connected to the stamping slider 83. The rear end of the swing arm 824 is connected to a spring. There are 2 eccentric wheels 823 and 2 swing arms 824 respectively. Two stamping sliders 83 are connected in front of one swing arm 824. When the rotating shaft 822 rotates, it drives the two eccentric wheels 823 to rotate. The eccentric wheels 823 drive the swing arms 824 to swing. The swing arms 824 drive the stamping sliders 83 to move up and down.

[0048] As Figures 13 - 18 shown, the internal resistance measuring device includes a battery cap transmission mechanism 101, a detection table 102, a probe detection mechanism 103, a material pushing plate 104, a material pushing cylinder 105, a blanking port 106, and a blanking hopper 107. The front end of the battery cap transmission mechanism 101 is butted against the detection table 102. The probe detection mechanism 103 is installed in the detection table 102. The material pushing plate 104 is provided with a material pushing port 1041. The battery cap transmission mechanism 101 drives the battery cap to move forward into the material pushing port 1041. The probe detection mechanism 103 measures the internal resistance of the battery cap in the material pushing port 1041. The detection table 102 is provided with a blanking port 1021. The blanking hopper 107 is installed below the detection table 102. The blanking hopper 107 communicates with the blanking port 1021. The material pushing cylinder 105 is installed on the side of the detection table 102. The material pushing cylinder 105 drives the material pushing plate 104 to move horizontally so that the battery cap falls into the blanking port 1021 and is then discharged from the blanking hopper 107. The specific structure of the material pushing cylinder 105 driving the material pushing plate 104 is that the piston rod of the material pushing cylinder 105 extends horizontally and is connected to the material pushing plate 104. The material pushing plate 104 is slidably installed on the detection table 102 through a slider and a slide rail.

[0049] There are 2 material pushing ports 1041, 2 blanking ports 106, and 2 blanking hoppers 107 respectively. The 2 blanking ports 106 and blanking hoppers 107 are located on both sides of the material pushing port 1041. In this way, one material pushing port 1041 can be used to load the battery caps with internal resistance, and the other can be used to move the battery caps to the blanking port 106, improving the speed. In addition, 2 battery caps enter the material pushing port 1041 at a time to detect 2 products at a time.

[0050] The battery cap transfer mechanism 101 includes a main feeding rack 1011, a conveyor belt 1012, a motor 1013, and a synchronous pulley transmission assembly 1014. The conveyor belt 1012 is installed in the main feeding rack 1011, and the motor 1013 is installed on the side of the main feeding rack 1011. The motor 1013 drives the conveyor belt 1012 to rotate through the synchronous pulley transmission assembly. The synchronous pulley transmission assembly is a prior art mainly composed of two synchronous pulleys and a synchronous belt. The assembled battery caps are transported and arranged on the conveyor belt 1012 by a manipulator.

[0051] Specifically, the probe detection mechanism 103 includes an upper air cylinder 1031, an upper probe mounting block 1032, upper probes 1033, a lower air cylinder 1034, a lower probe mounting block 1035, lower probes 1036, and an internal resistance tester (not shown). The upper air cylinder 1031 is located above the detection table 102 and can be installed on the detection table 102 through a vertical plate. The upper air cylinder 1031 drives the upper probe mounting block 1032 to move downward. The upper probe 1033 is installed in the upper probe mounting block 1032 and is used to contact the upper surface of the battery cap. The lower air cylinder 1034 is located below the detection table 102 and can be installed on the bottom plate 108, while the detection table 102 is supported by a support rod 109. The lower air cylinder 1034 drives the lower probe mounting block 1035 to move upward. The lower probe 1036 is installed in the lower probe mounting block 1035. The detection table 102 is provided with a through hole corresponding to the position of the lower probe 1036, and the lower probe 1036 is used to contact the lower surface of the battery cap. The upper probe 1033 and the lower probe 1036 are electrically connected to the internal resistance tester, and the internal resistance can be detected after the upper probe 1033 and the lower probe 1036 contact the battery cap. In addition, there are two groups of upper probes 1036, with 2 upper probes 1036 in each group, and two groups of lower probes 1036, with 2 lower probes 1036 in each group, which can improve the detection efficiency and accuracy. The hopper 107 is in a V shape. The upper end of the hopper 107 is connected to the discharge port 106. A turning plate 1071 is installed in the hopper 107. The turning air cylinder 1072 drives the turning plate 1071 to rotate to change the discharge direction. There are two hoppers 107, and correspondingly, there are also 2 turning plates 1071 connected by a rotating shaft. The rotation of the turning plate 1071 to change the discharge direction can guide the qualified and unqualified products to discharge in different directions.

[0052] A lithium battery cap assembly process is completed using the above lithium battery cap assembly machine and includes the following steps.

[0053] ① The explosion-proof film feeding device drives 4 explosion-proof films to be conveyed to the fixture.

[0054] ② The indexing disk rotates to make the fixture reach the top cover feeding device, and the top cover feeding device drives the top cover to be conveyed to the fixture; ③ The indexing disk rotates to make the fixture reach the welding device, and the welding device welds the explosion-proof film and the top cover in the fixture into one body.

[0055] ④The indexing disk rotates to move the jig to the edge wrapping device, and the edge wrapping device drives the edge wrapping of the outer side of the top cover;

[0056] ⑤The transfer manipulator drives the product after edge wrapping to the shaping device, and the shaping device shapes the product;

[0057] ⑥The transfer manipulator drives the shaped product to the rubber ring feeding device, and the rubber ring feeding device drives the rubber ring feeding;

[0058] ⑦The transfer manipulator drives the shaped product to the internal resistance measuring device, and the internal resistance measuring device detects the internal resistance of the product, and the qualified and unqualified products are discharged separately.

[0059] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A lithium battery cap assembly machine, characterized in that: It includes a main frame, a dividing disc, an explosion-proof piece feeding device, a top cover feeding device, a welding device, an edge wrapping device, a transport manipulator, a shaping device, a rubber ring feeding device and an internal resistance measuring device. The main frame is installed with a dividing disc, and a plurality of jigs arranged in a circle around the central axis of the dividing disc are installed in the dividing disc. The dividing disc rotates to make the jig pass through the explosion-proof piece feeding device, the top cover feeding device, the welding device and the edge wrapping device in turn. The explosion-proof piece feeding device drives the explosion-proof piece to be transported to the jig. The top cover feeding device drives the top cover to be transported to the jig. The welding device welds the explosion-proof piece and the top cover in the jig into one. The edge wrapping device drives the outer side of the top cover to wrap the edge. The transport manipulator drives the products after wrapping to pass through the shaping device, the rubber ring feeding device and the internal resistance measuring device in turn. The shaping device shapes the product. The rubber ring feeding device drives the rubber ring feeding. The internal resistance measuring device detects the internal resistance of the product.

2. A lithium battery cap assembly machine according to claim 1, characterized in that: The explosion-proof disk feeding device drives four explosion-proof disks to be transported to the jig at a time, and each group of jigs has four jigs corresponding to the number of explosion-proof disks.

3. A lithium battery cap assembly machine according to claim 1 or 2, characterized in that: The explosion-proof piece feeding device comprises an explosion-proof piece vibration plate, a direct vibration mechanism, and a material taking mechanism. The explosion-proof piece vibration plate drives the explosion-proof piece to the direct vibration mechanism, the direct vibration mechanism drives the explosion-proof piece to move forward, and the material taking mechanism drives the explosion-proof piece from the direct vibration mechanism to the indexing disc. The direct vibration mechanism is provided with four direct vibration material channels, and the material taking mechanism is provided with four material taking heads. Multiple groups of jigs arranged in a circle around the central axis of the indexing disc are installed in the indexing disc, and each group of jigs has four jigs. The material taking head takes the explosion-proof piece at the front end of the direct vibration material channel and transfers it to the jig. The explosion-proof piece vibration plate is provided with four material The vibration of the explosion-proof plate vibration plate makes the four lithium battery caps be discharged from the four material outlets to the straight vibration material channel respectively. A limit block allowing a single explosion-proof plate to enter is installed at the front end of each straight vibration material channel, and a sensor is installed at the bottom of the limit block. The material picking mechanism includes a lifting block, a slider, a slide rail, a lifting cylinder, a transverse block and a transverse cylinder. Four material picking heads are installed in front of the lifting block, and a slider is installed behind the lifting block. The slider is slidably connected to the slide rail, and the slide rail is vertically installed on the transverse block. The lifting cylinder drives the lifting block to move up and down, and the transverse cylinder drives the transverse block to move forward and backward.

4. A lithium battery cap assembly machine according to claim 1 or 2, characterized in that: The shaping device includes a fixed seat, a stamping power mechanism, a stamping slider, an upper shaping die, a lower shaping die, a lower die seat and a push rod. The stamping power mechanism is installed in the fixed seat, and multiple stamping sliders are slidably installed in front of the fixed seat. There are multiple upper shaping dies and multiple lower shaping dies respectively. The upper shaping die is located above the lower shaping die, and the lower shaping die is installed above the lower die seat. The lower shaping die is provided with a shaping cavity for the lithium battery cap to enter. Multiple push rods are installed in the lower die seat. The push rods are used to eject the lithium battery cap in the shaping cavity. When multiple stamping sliders drive multiple upper shaping dies to move downward, the multiple upper shaping dies and multiple lower shaping dies are combined to shape multiple lithium battery caps.

5. A lithium battery cap assembly machine according to claim 4, characterized in that: A plurality of stamping slides, an upper shaping die and a lower shaping die are arranged horizontally respectively; the upper shaping die comprises a stamping nozzle, a lifting block, a lifting slide, a return spring, an upper fixed block and an upper shaping seat; the stamping nozzle is installed in front of the lifting block; the lifting slide is installed behind the lifting block; the lifting slide is vertically slidably connected to the upper shaping seat; an upper fixed seat is installed above the upper shaping seat; one end of the return spring is hooked on the side of the lifting block and the other end is hooked on the upper fixed block; the upper shaping die is installed at the output end of the manipulator; the lower shaping die comprises a lower shaping seat and a shaping head; the shaping head is installed in the lower shaping seat; the shaping cavity is arranged on the shaping head; and the upper opening of the shaping cavity is a trumpet mouth.

6. A lithium battery cap assembly machine according to claim 4, characterized in that: The stamping power mechanism includes a motor, a rotating shaft, an eccentric wheel and a swing arm. The motor is installed on the side of the fixed seat, the motor output shaft is connected to the rotating shaft, the eccentric wheel is fixedly installed on the circumference of the rotating shaft, the eccentric wheel is in contact with the swing arm, the middle part of the swing arm is rotatably installed on the fixed seat, the front end of the swing arm is connected to the stamping slider, the rear end of the swing arm is connected to the spring, there are two eccentric wheels and two swing arms respectively, and two stamping sliders are connected to the front of one swing arm.

7. A lithium battery cap assembly machine according to claim 1 or 2, characterized in that: The internal resistance measuring device includes a battery cap transmission mechanism, a testing platform, a probe detection mechanism, a material discharging plate, a material discharging cylinder, a material dropping port and a material dropping hopper. The front end of the battery cap transmission mechanism is connected to the testing platform, the probe detection mechanism is installed in the testing platform, the material discharging plate is provided with a material discharging port, the battery cap transmission mechanism drives the battery cap to move forward into the material discharging port, the probe detection mechanism detects the internal resistance of the battery cap in the material discharging port, the testing platform is provided with a material dropping port, a material dropping hopper is installed under the testing platform, the material dropping hopper is connected to the material dropping port, a material discharging cylinder is installed on the side of the testing platform, and the material discharging cylinder drives the material discharging plate to move horizontally to make the battery cap fall into the material dropping port.

8. A lithium battery cap assembly machine according to claim 7, characterized in that: There are two material dispensing ports, two material dropping ports and two material dropping hoppers respectively, and two battery caps enter the material dispensing ports at a time. The battery cap transmission mechanism includes a main feeding frame, a conveyor belt, a motor and a synchronous wheel transmission assembly. The conveyor belt is installed in the main feeding frame, and the motor is installed on the side of the main feeding frame. The motor drives the conveyor belt to rotate through the synchronous wheel transmission assembly, and the battery caps are arranged on the conveyor belt.

9. A lithium battery cap assembly machine according to claim 7, characterized in that: The probe detection mechanism includes an upper cylinder, an upper probe mounting block, an upper probe, a lower cylinder, a lower probe mounting block, a lower probe and an internal resistance tester. The upper cylinder is located above the detection table, the upper cylinder drives the upper probe mounting block to move downward, the upper probe is installed in the upper probe mounting block, and the upper probe is used to contact the upper surface of the battery cap. The lower cylinder is located below the detection table, the lower cylinder drives the lower probe mounting block to move upward, the lower probe is installed in the lower probe mounting block, and the lower probe is used to contact the lower surface of the battery cap. The upper probe and the lower probe are electrically connected to the internal resistance tester. There are two groups of upper probes, each group has two upper probes, and there are two groups of lower probes, each group has two lower probes. The drop hopper is in a herringbone shape, the upper end of the drop hopper is connected to the drop port, a flip plate is installed in the drop hopper, and the flip cylinder drives the flip plate to rotate to change the discharge direction.

10. A lithium battery cap assembly process, characterized in that: The lithium battery cap assembly machine according to any one of claims 1 to 9 is used to complete the process, comprising the following steps: ①The burst-proof disk feeding device drives 4 burst-proof disks to be transported to the fixture; ②The indexing disc rotates to make the fixture reach the top cover feeding device, and the top cover feeding device drives the top cover to be transported to the fixture; ③The indexing disc rotates to make the fixture reach the welding device, and the welding device welds the explosion-proof plate and the top cover in the fixture together; ④The indexing disc rotates to make the jig reach the hemming device, and the hemming device drives the outer side of the top cover to hem; ⑤ The transport robot drives the hemmed product to the shaping device, and the shaping device shapes the product; ⑥ The transport robot drives the shaped product to the rubber ring loading device, and the rubber ring loading device drives the rubber ring loading; ⑦ The transport robot drives the shaped products to the internal resistance measuring device, which detects the internal resistance of the products, and separates qualified products from unqualified products.

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