Full-automatic spot welding machine

Abstract

The invention discloses a full-automatic spot welding machine which comprises a cabinet, a tantalum block feeding mechanism arranged on the cabinet, a rotary disc distributing mechanism, a rotary disc conveying mechanism, a teflon sleeving mechanism, a first visual inspection mechanism, a spot welding mechanism, a material strip feeding mechanism, a product conveying mechanism, a second visual inspection mechanism, a cutting mechanism, a finished product carrying mechanism and a discharging mechanism. The rotating disc distributing mechanism is located at the end of the tantalum block feeding mechanism, the teflon sleeving mechanism, the first visual inspection mechanism and the spot welding mechanism are annularly arranged on the side edge of the rotating disc conveying mechanism, the spot welding mechanism is synchronously located on the side edge of the product conveying mechanism, and the second visual inspection mechanism and the cutting mechanism are located on the side edge of the product conveying mechanism. The material strip feeding mechanism and the discharging mechanism are located at the two ends of the product conveying mechanism respectively, and the finished product carrying mechanism is located between the product conveying mechanism and the discharging mechanism. According to the full-automatic spot welding machine, automatic operation of a series of actions of feeding, spot welding, detecting, removing and discharging is achieved, and the efficiency is improved while the quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of automation, and in particular to a full-automatic spot welding machine. Background Art

[0002] Tantalum capacitors are one of the most advantageous capacitors in the electronics industry. Compared with other capacitors, they are small in size, large in capacity, good in stability, long in life, and can work under harsh conditions. The manufacturing process of tantalum capacitors includes tantalum powder molding, sintering, spot welding, assembly, empowerment, touch, graphite silver paste cutting, dip soldering, aging and testing. In the spot welding process, the spot welding position has a great influence on the subsequent processes and directly affects the production efficiency. It is a factor worthy of consideration for many manufacturers, especially how to improve production efficiency and ensure the quality after spot welding during the spot welding process.

[0003] At present, spot welding is performed by manual or semi-automatic equipment, such as the patented tantalum core automatic strip spot welding method (patent number: CN201611200472.7), which uses manual loading and unloading operations and semi-automatic equipment for spot welding. The whole process is labor-intensive and has low production efficiency. In addition, the powder generated during the production process also poses a great health hazard to the operators. Summary of the invention

[0004] In view of the deficiencies and shortcomings of the prior art, the present invention provides a fully automatic spot welding machine, which realizes the automated operation of a series of actions including loading, spot welding, detection, rejection and unloading, thereby ensuring quality while improving efficiency.

[0005] A fully automatic spot welding machine comprises a cabinet, a tantalum block feeding mechanism, a turntable material dividing mechanism, a turntable conveying mechanism, a Teflon sleeve mechanism, a first visual inspection mechanism, a spot welding mechanism, a material strip feeding mechanism, a product conveying mechanism, a second visual inspection mechanism, a cutting mechanism, a finished product handling mechanism and a material unloading mechanism, wherein:

[0006] The tantalum block feeding mechanism vibrates and feeds the tantalum blocks, so that the tantalum blocks enter the turntable material distribution mechanism one by one;

[0007] The rotating disc material distribution mechanism is located on the side of the tantalum block feeding mechanism, and uses a vacuum suction cup to suck the tantalum block that is transferred;

[0008] The turntable conveying mechanism clamps the tantalum block through the tantalum block clamping claws and sequentially conveys it to the Teflon sleeve mechanism, the first visual inspection mechanism and the spot welding mechanism for corresponding processing;

[0009] The Teflon sleeve mechanism is located on the side of the turntable transmission mechanism, and automatically sleeves the Teflon ring on the tantalum wire;

[0010] The first visual inspection mechanism is used to detect whether the tantalum wire is covered with a Teflon ring, and to remove the tantalum block without the Teflon ring;

[0011] The spot welding mechanism uses electrodes arranged opposite to each other up and down to weld the end of the tantalum wire to the material strip;

[0012] The material strip feeding mechanism realizes the loading of stacked material strips one by one, and transports the material strips to the product conveying mechanism through the material strip transport assembly;

[0013] The product conveying mechanism uses a carrier to switch the material strips between the material strip feeding mechanism, the spot welding mechanism, the second visual inspection mechanism, the cutting mechanism and the finished product handling mechanism, thereby realizing continuous processing;

[0014] The finished product transport mechanism is located between the product conveying mechanism and the unloading mechanism, and transports the finished products processed on the product conveying mechanism to the unloading mechanism for unloading.

[0015] Preferably, the turntable material dividing mechanism includes a column, a multi-station turntable fixed on one side of the column, a driving mechanism for driving the multi-station turntable to rotate, and a cutting assembly located on one side of the multi-station turntable. A plurality of vacuum suction cups for adsorbing tantalum blocks are evenly spaced on the side wall of the multi-station turntable.

[0016] Preferably, the turntable transmission mechanism includes a turntable, a driving mechanism arranged below the turntable to drive the turntable to rotate, tantalum block claws arranged at equal intervals on the surface of the turntable, and a claw unlocking mechanism, wherein a spherical bearing is installed at the tail end of the tantalum block claw, and the claw unlocking mechanism is a fan-shaped pressure plate, which is arranged on the surface of the turntable. The tantalum block claw rotates with the turntable, and when the spherical bearing at the tail end passes under the fan-shaped pressure plate, it is pressed down and the tantalum block claw is opened synchronously, and when the spherical bearing is separated from the fan-shaped pressure plate, the tantalum block claw is closed synchronously to achieve clamping.

[0017] Preferably, the Teflon sleeve mechanism includes a ring assembly, a material strip loading assembly located on one side of the ring assembly, and an empty material strip winding assembly located on the other side of the ring assembly. The ring assembly pushes the Teflon ring in the material strip onto the tantalum wire.

[0018] Preferably, the spot welding mechanism includes a lower bracket and an upper bracket that are arranged relatively to each other, a welding flow channel that receives the material strip is arranged on the surface of the lower bracket, an upper electrode fixed under the upper bracket through a connecting arm, and a lower electrode arranged under the welding flow channel. The upper electrode and the lower electrode are arranged relatively to each other to weld the free end of the tantalum wire to the material strip on the welding flow channel.

[0019] Preferably, the material strip feeding mechanism structure includes a material storage box fixed above the frame, a lifting assembly located below the frame, an air blowing separation assembly and a detection optical fiber located at the opening above the material storage box, and the material strips are stacked up and down in the material storage box. The material strips inside the material storage box are lifted by the lifting assembly below, the material strip conveying assembly sucks the top material strip, and the air blowing separation assembly simultaneously blows out compressed air to separate the sucked material strip from the next one.

[0020] Preferably, the product conveying mechanism includes a mounting frame, a first conveying channel and a second conveying channel arranged side by side on the mounting frame, a carrier loaded with material strips arranged on the first conveying channel and the second conveying channel, and a switching module located at both ends of the mounting frame to realize switching of the carrier between the first channel and the second channel. The first conveying channel is used to convey products loaded with material strips to switch between the spot welding mechanism, the second visual inspection mechanism, the cutting mechanism and the finished product handling mechanism, and the second conveying channel realizes the conveyance of empty carriers from the end to the beginning.

[0021] Preferably, the switching module includes a mounting base, linear rails arranged side by side on the mounting base, a supporting base arranged on the linear rails and movable along the linear rails, a pushing cylinder arranged at one end of the mounting base to drive the supporting base to move along the linear rails, and a second pushing cylinder arranged at the other end of the mounting base to push the carrier from the supporting base into the first conveying channel.

[0022] Preferably, the finished product handling mechanism includes a second door beam, a second transverse module fixed on the second door beam, a second lifting cylinder installed on a slider of the second transverse module, a flipping cylinder arranged at the lower end of the second lifting cylinder, and a vacuum adsorption plate arranged at the end of the flipping cylinder. The vacuum adsorption plate is used to suck the material strips, and the flipping cylinder is used to control the material strips to flip from a horizontal state to a vertical state so as to insert them into the unloading mechanism.

[0023] Preferably, the unloading mechanism includes a silo bracket, a lifting assembly located below the silo bracket to control the change of its upper and lower positions, a silo is placed on the silo bracket, and a plurality of insertion slots are provided at intervals on both sides of the silo to facilitate the insertion of both ends of the material strips to realize unloading.

[0024] Beneficial effects: The fully automatic spot welding machine disclosed by the present invention realizes fully automated processing of a series of actions including loading tantalum blocks, putting on Teflon rings and detecting and rejecting them, loading material strips, welding tantalum blocks and material strips, and finished product detection, rejection, and unloading, which greatly improves production efficiency and reduces labor input costs. In addition, the layout of various mechanisms is reasonable and compact, reducing the space occupancy rate of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is an overall structural diagram of an embodiment of the present invention;

[0026] Figure 2 It is a structural diagram of a tantalum block feeding mechanism in an embodiment of the present invention;

[0027] Figure 3 It is a structural diagram of the turntable material distribution mechanism in an embodiment of the present invention;

[0028] Figure 4 It is a structural diagram of the turntable transmission mechanism in an embodiment of the present invention;

[0029] Figure 5 It is a structural diagram of the Teflon mechanism in the embodiment of the present invention;

[0030] Figure 6 is a structural diagram of a first visual detection mechanism in an embodiment of the present invention;

[0031] Figure 7 A structural diagram of a spot welding mechanism in an embodiment of the present invention;

[0032] Figure 8 It is a structural diagram of the material strip feeding mechanism in an embodiment of the present invention;

[0033] Fig. 9 It is a structural diagram of the material strip handling mechanism in an embodiment of the present invention;

[0034] Fig.10 It is a structural diagram of a product conveying mechanism in an embodiment of the present invention;

[0035] Fig.11 This is a structural diagram of a push module in an embodiment of the present invention;

[0036] Fig.12 A structural diagram of a switching module in an embodiment of the present invention;

[0037] Fig.13 A structural diagram of a cutting mechanism in an embodiment of the present invention;

[0038] Fig.14 It is a structural diagram of the finished product handling mechanism in an embodiment of the present invention;

[0039] Fig.15 It is a structural diagram of the feeding mechanism in an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to further understand the present invention, the preferred embodiments of the present invention are described below in conjunction with the accompanying drawings and examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the claims of the invention.

[0041] The fully automatic spot welding machine disclosed in the present invention comprises a cabinet 1, a tantalum block feeding mechanism 2, a turntable material dividing mechanism 3, a turntable conveying mechanism 4, a Teflon sleeve mechanism 5, a first visual inspection mechanism 6, a spot welding mechanism 7, a material strip feeding mechanism 8, a product conveying mechanism 9, a second visual inspection mechanism 10, a cutting mechanism 11, a finished product handling mechanism 12 and a material unloading mechanism 13, wherein:

[0042] The tantalum block feeding mechanism 2 performs vibration feeding on the tantalum blocks so that the blocks enter the rotary disc feeding mechanism one by one;

[0043] The rotating disc material distribution mechanism 3 is located on the side of the tantalum block feeding mechanism, and uses a suction cup to suck the tantalum block that is transferred;

[0044] The turntable conveying mechanism 4 clamps the tantalum block through the tantalum block clamping claws and sequentially conveys it to the Teflon sleeve mechanism, the first visual inspection mechanism and the spot welding mechanism for corresponding processing;

[0045] The Teflon sleeve mechanism 5 is located on the side of the turntable transmission mechanism, and automatically sleeves the Teflon ring on the tantalum wire;

[0046] The first visual inspection mechanism 6 is used to detect whether the tantalum wire is covered with a Teflon ring. If not, it will be directly discarded, while if it is, it will enter the next spot welding process;

[0047] The spot welding mechanism 7 welds the tantalum wire led out of the tantalum block to the material strip;

[0048] The strip feeding mechanism 8 realizes the loading of stacked strips one by one, and transports the strips to the product conveying mechanism through the strip handling assembly, and then to the spot welding mechanism for welding;

[0049] The product conveying mechanism 9 enables the material strip to be switched between the material strip feeding mechanism, the spot welding mechanism, the second visual inspection mechanism, the cutting mechanism and the finished product handling mechanism to achieve continuous processing;

[0050] The finished product transport mechanism is located between the product conveying mechanism and the unloading mechanism, and transports the finished products processed on the product conveying mechanism to the unloading mechanism for unloading.

[0051] Specifically, the tantalum block feeding mechanism structure is as follows: Figure 2 As shown, it includes a vibration plate 21 and a feeding track 22. The feeding track is fixed on the cabinet through a straight vibrator 23. One end of the feeding track is placed in the vibration plate, and the other end extends to the turntable dividing mechanism, so that the tantalum blocks enter the feeding track one by one and are sent into the turntable dividing mechanism. In order to increase the amount of material fed at one time, a storage hopper 24 is also arranged on the side of the vibration plate, and the tantalum blocks are unloaded in conjunction with the inclined material trough 25. When there is less material in the vibration plate (detected by a sensor arranged on the inner wall of the vibration plate), the straight vibrator under the storage hopper is controlled to vibrate, so that the tantalum blocks in the storage hopper fall into the vibration plate. The setting of this two-level storage structure can increase the feeding amount and reduce the frequency of manual intervention.

[0052] The structure of the rotating disc material distribution mechanism is as follows: Figure 3As shown, it includes a column 31, a multi-station turntable 32 fixed on one side of the column, a driving mechanism 33 for driving the multi-station turntable to rotate, and a cutting assembly 34 located on one side of the multi-station turntable. A plurality of vacuum suction cups 35 are evenly spaced on the side wall of the multi-station turntable for adsorbing the tantalum blocks transferred one by one, rotating to the cutting assembly to cut the tantalum wire to a fixed length, ensuring the length of the tantalum wire and the flatness of the end face, and the cut tantalum block is sent to the turntable conveying mechanism.

[0053] The structure of the turntable transmission mechanism is as follows: Figure 4 As shown, it includes a turntable 41, a driving mechanism 42 arranged below the turntable to drive the turntable to rotate, tantalum block clamps 43 arranged at equal intervals on the surface of the turntable, and a clamp unlocking mechanism 44. A spherical bearing 45 is installed at the tail end of the tantalum block clamp, and when the spherical bearing is pressed down by an external force, the tantalum block clamp is opened (the principle is similar to that of a spring clamp). The clamp unlocking mechanism is a fan-shaped pressure plate, which is arranged on the surface of the turntable. The spherical bearing at the tail end of the tantalum block clamp is pressed down when passing under the fan-shaped pressure plate. The tantalum block clamp is opened synchronously. When the spherical bearing is separated from the fan-shaped pressure plate, the tantalum block clamp is closed synchronously to clamp the front end. In order to facilitate the spherical bearing to smoothly enter under the fan-shaped pressure plate during use, inclined guide surfaces are provided on both sides of the fan-shaped pressure plate. The fan-shaped pressure plate is located between the spot welding mechanism and the turntable material distribution mechanism. After the tantalum block and the material strip are welded, the tantalum block clamp is opened to release the tantalum block until a new tantalum block is clamped at the turntable material distribution mechanism. When it reaches the spot welding mechanism again, the tantalum block clamp is opened again.

[0054] The structure of the Teflon sleeve is as follows Figure 5 As shown, it includes a ring assembly 51, a material strip loading assembly 52 located on one side of the ring assembly, and an empty material strip winding assembly 53 located on the other side of the ring assembly, the material strip loading assembly includes a bracket 521 for placing a material disc, a motor 522 for driving the bracket to rotate, and an unwinding tension wheel group 523, the empty material strip winding assembly includes a winding bracket 531, a driving motor 532 and a winding tension wheel group 533, the ring assembly pushes the Teflon ring in the material strip and puts it on the tantalum wire, the principle of the ring assembly is to use the motor power to cooperate with the internal and external punching needles (not shown) to punch the Teflon film into an O-shape and put it on the tantalum wire, the material strip disc with the Teflon ring is placed on the bracket, the material strip passes through the unwinding tension wheel group, the ring assembly, and the winding tension wheel group in turn, and then is wound around the empty material disc.

[0055] The structure of the first visual detection mechanism is as follows: Figure 6As shown, it includes a base 61, a column 62, a CCD camera 63, a mounting plate 64, a detection light source 65, a pressing cylinder 66, a blowing assembly 67 and a waste rejection assembly 68. The column is vertically fixed on the base, the mounting plate is fixed in the middle of the column, a detection hole is opened on the mounting plate, the CCD camera is fixed on the column and is located directly above the detection hole, and the detection light source is located directly below the detection hole. The pressing cylinder is fixed on the other side of the mounting plate. When the detection is unqualified, the spherical bearing at the tail of the tantalum block clamp is pressed, the tantalum block clamp is opened, and the blowing assembly is used to blow off the unqualified tantalum block. The waste rejection assembly includes a waste box 681 placed on the base, a material guide port 682 located at the front end of the blowing assembly, and a feed pipe 683 connecting the material guide port and the waste box. The unqualified tantalum block enters the material guide port and falls into the waste box through the feed pipe. During inspection, the tantalum wire is located below the inspection port, and backlight is provided by the inspection light source. The CCD camera detects whether there is a Teflon ring on the tantalum wire. Those without Teflon ring are rejected as unqualified products, while those without Teflon ring are sent to the spot welding mechanism.

[0056] The spot welding mechanism realizes the welding of tantalum block and material strip, and its structure is as follows: Figure 7 As shown, it includes a lower bracket 71 and an upper bracket 72 that are relatively arranged, a welding flow channel 73 that is arranged on the surface of the lower bracket to receive the material strip, an upper electrode 75 fixed to the bottom of the upper bracket through a connecting arm 74, and a lower electrode 76 that is arranged under the welding flow channel. The upper electrode and the lower electrode are arranged opposite to each other to weld the free end of the tantalum wire to the material strip on the welding flow channel.

[0057] The structure of the material strip feeding mechanism is as follows: Figure 8 As shown, it includes a material storage box 81 fixed above the frame, a lifting assembly 82 located below the frame, an air blowing separation assembly 83 and a detection optical fiber 84 located at the opening above the material storage box, and the material strips are stacked up and down in the material storage box, and the material strips inside the material storage box are lifted by the lifting assembly below. When the material strips are detected by the detection optical fiber, the material strip conveying assembly 14 sucks the top material strip, and the air blowing separation assembly blows out compressed air synchronously to separate the top material strip from the next one, ensuring that only one piece is conveyed at a time.

[0058] The strip handling assembly structure is as follows Fig. 9 As shown, it includes a portal frame 141, a transverse moving module 142 fixed on the portal frame, a mounting base 143 fixed on the slide of the transverse moving module, a lifting cylinder 144 fixed on the mounting base, and a vacuum suction cup group 145 fixed under the lifting cylinder. The vacuum suction cup group is composed of a plurality of vacuum suction cups arranged in a line to achieve multi-point adsorption of material strips. The adsorbed material strips are transported to the product conveying mechanism for subsequent conveying through the cooperation of the lifting cylinder and the transverse moving module.

[0059] The product conveying mechanism structure is as follows Fig.10As shown, it includes a mounting frame 91, a first conveying channel 92 and a second conveying channel 93 arranged side by side on the mounting frame, a carrier 94 loaded with products arranged on the first / second conveying channel, and a switching module 95 located at both ends of the mounting frame for realizing the switching of the carrier between the first conveying channel and the second conveying channel. The first conveying channel is used to convey the product loaded with material strips to switch between the spot welding mechanism, the second visual inspection mechanism, the cutting mechanism and the finished product handling mechanism, and the second conveying channel realizes the conveyance of the empty carrier from the end to the beginning, thereby ensuring the circulation of the carrier.

[0060] Specifically, a transmission motor is provided at intervals on both sides of the first transmission flow channel and the second transmission flow channel, and a follower bearing 921 is provided on the rotating shaft of the transmission motor. The carrier moves forward by the relative rotation of the follower bearings on both sides. In order to improve the smoothness of movement, a roller 922 is provided at intervals on the bottom surface of the first transmission flow channel and the second transmission flow channel to achieve the bottom rolling forward movement. A push module 96 is provided on the side of the second transmission flow channel. The structure of the push module is as follows: Fig.11 As shown, it includes a crossbeam 961, a transverse module 962 arranged on the crossbeam, and a push block 963 fixed on the slide block of the transverse module. The crossbeam is fixed on the cabinet through a support seat 964. After the empty carrier enters the switching module at the end, the push block is used to push it into the second transmission channel, and then continues to be pushed into the switching module at the starting end.

[0061] The switching module realizes the switching of the carrier between two groups of product flow channels, and its structure is as follows: Fig.12 As shown, it includes a mounting base 951, a linear rail 952 arranged side by side on the mounting base, a supporting base 953 arranged on the linear rail and movable along the linear rail, a pushing cylinder 954 arranged at one end of the mounting base to drive the supporting base to move along the linear rail, and a second pushing cylinder 955 arranged at the other end of the mounting base. The first cylinder realizes the switching of the carrier between the two conveying channels, and the second cylinder realizes the pushing of the starting carrier into the first conveying channel. Since the first conveying channel has follower bearings on both sides for driving the carrier to move forward, the carrier can be simultaneously sent into the switching module at the end. For the switching module at the starting end, the carrier needs external force to enter the channel, so a second pushing cylinder is provided.

[0062] The switching module at the beginning is located below the material strip conveying assembly. When the empty carrier is conveyed over, the material strip conveying module conveys the material strip to the carrier, and then conveys it to the first conveying channel.

[0063] The second visual inspection mechanism is located on the side of the first conveying channel and inspects the welding quality through a CCD camera.

[0064] The cutting assembly is located on the side of the first conveying channel, and its structure is as follows: Fig.13As shown, it includes a mounting seat 111, an upper cutting knife 112 and a lower cutting knife 113 arranged relatively, and a power assembly 114 for driving the upper and lower cutting knives to be relatively close or separated. The upper cutting knife is located above the tantalum block after welding, and the lower cutting knife is located below, and the relative proximity is used to achieve the cutting of defective products.

[0065] The structure of the finished product handling mechanism is as follows Fig.14 As shown, it includes a second door beam 121, a second transverse module 122 fixed on the second door beam, a second lifting cylinder 123 installed on the second transverse module slider, a flip cylinder 124 arranged at the lower end of the second lifting cylinder, and a vacuum adsorption plate 125 arranged at the end of the flip cylinder. The finished product handling mechanism spans between the switching component and the unloading mechanism. The vacuum adsorption plate is used to suck, flip, lift and transversely move the product transmitted to the switching component to the unloading mechanism for unloading. The flipping here is to change the horizontal material strip into a vertical state so as to insert it into the slot of the unloading mechanism.

[0066] The structure of the feeding mechanism is as follows: Fig.15 As shown, it includes a silo bracket 131, and a lifting assembly 132 located below the silo bracket to control the change of its up and down position. A silo is placed on the silo bracket, and a plurality of insertion grooves 133 are provided at intervals on both sides of the silo to facilitate the insertion of both ends of the material strip to realize material unloading.

[0067] The present invention discloses a fully automatic spot welding machine, whose main working process is divided into a tantalum block part, a material strip part, and a finished product part after the tantalum block and the material strip are welded. The tantalum block part includes tantalum block loading, turntable feeding, Teflon sleeve, detection and rejection, the material strip part includes material strip loading and material strip transmission, and the finished product part includes welding of the tantalum block and the material strip, detection of the finished product after welding, cutting of unqualified products and unloading.

[0068] For Tantalum Block

[0069] Tantalum blocks are manually poured into the storage hopper, and the vibration makes the tantalum blocks scatter into the vibration plate. Through the vibration of the vibration plate and the internal track of the vibration plate (this technology is conventional technology and will not be described in detail), the tantalum blocks are sent to the feeding track one by one, and enter the turntable dividing mechanism at the top of the feeding track one by one (the tantalum blocks are arranged in the feeding track with the tantalum blocks in front and the tantalum wires in the back, ensuring that the tantalum blocks enter the turntable dividing mechanism with the tantalum wires suspended in the air). The turntable dividing mechanism sucks the tantalum blocks through the multi-station turntable and the vacuum suction cup, and rotates them to the cutting assembly to cut the tantalum wires led out of the tantalum blocks to a fixed length, ensuring the length of the tantalum wires while ensuring the neat cutting edges, which is convenient for the subsequent Teflon ring installation and welding.

[0070] The cut tantalum block is sent to the transfer mechanism, and the tantalum block is clamped by the tantalum block claw, with the tantalum wire facing outward. The tantalum block is sent to the Teflon-covering mechanism in turn by a rotating turntable, and the Teflon ring is put on the tantalum wire. Then it is sent to the first visual inspection mechanism to detect whether there is a Teflon ring. If not, it will be directly rejected. Some are sent to the welding equipment to be welded to the material strip.

[0071] For the strip part

[0072] The material strip transport component is used to absorb the material strip on the top of the storage box and transport it to the empty carrier at the switching component. The switching module is used to switch the carrier containing the material strip to the first conveying channel, and the first conveying channel is used to transport the material strip to the electric welding mechanism for tantalum block welding.

[0073] For the finished product

[0074] The finished product after welding is sent to the second visual inspection mechanism through the first conveying channel for welding quality inspection. The unqualified ones are individually cut by the subsequent cutting mechanism, and the qualified ones are directly transmitted to the switching module at the end and unloaded by the finished product handling mechanism and transported to the silo of the unloading mechanism.

[0075] The fully automatic spot welding machine of the present invention realizes fully automated processing of a series of actions including loading tantalum blocks, putting on Teflon rings and detecting and rejecting, loading material strips, welding tantalum blocks and material strips, finished product detection, rejection, and unloading, thereby greatly improving production efficiency and reducing labor input costs. In addition, the layout between various mechanisms is reasonable and compact, reducing the space occupancy rate of the equipment.

[0076] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the invention.

Claims

1. A fully automatic spot welding machine, characterized in that: It includes a cabinet, a tantalum block loading mechanism, a turntable material distribution mechanism, a turntable transmission mechanism, a Teflon sleeve mechanism, a first visual inspection mechanism, a spot welding mechanism, a material strip feeding mechanism, a product transmission mechanism, a second visual inspection mechanism, a cutting mechanism, a finished product handling mechanism and a material unloading mechanism, wherein: The tantalum block feeding mechanism vibrates and feeds the tantalum blocks, so that the tantalum blocks enter the turntable material distribution mechanism one by one; The rotating disc material distribution mechanism is located on the side of the tantalum block feeding mechanism, and uses a vacuum suction cup to suck the tantalum block that is transferred; The turntable conveying mechanism clamps the tantalum block through the tantalum block clamping claws and sequentially conveys it to the Teflon sleeve mechanism, the first visual inspection mechanism and the spot welding mechanism for corresponding processing; The Teflon sleeve mechanism is located on the side of the turntable transmission mechanism, and automatically sleeves the Teflon ring on the tantalum wire; The first visual inspection mechanism is used to detect whether the tantalum wire is covered with a Teflon ring, and to remove the tantalum block without the Teflon ring; The spot welding mechanism uses electrodes arranged opposite to each other up and down to weld the end of the tantalum wire to the material strip; The material strip feeding mechanism realizes the loading of stacked material strips one by one, and transports the material strips to the product conveying mechanism through the material strip transport assembly; The product conveying mechanism uses a carrier to switch the material strips between the material strip feeding mechanism, the spot welding mechanism, the second visual inspection mechanism, the cutting mechanism and the finished product handling mechanism, thereby realizing continuous processing; The finished product transport mechanism is located between the product conveying mechanism and the unloading mechanism, and transports the finished products processed on the product conveying mechanism to the unloading mechanism for unloading.

2. A fully automatic spot welding machine according to claim 1, characterized in that: The turntable material distribution mechanism includes a column, a multi-station turntable fixed on one side of the column, a driving mechanism for driving the multi-station turntable to rotate, and a cutting component located on one side of the multi-station turntable. A plurality of vacuum suction cups for adsorbing tantalum blocks are evenly spaced on the side wall of the multi-station turntable.

3. A fully automatic spot welding machine according to claim 1, characterized in that: The turntable transmission mechanism includes a turntable, a driving mechanism arranged below the turntable to drive the turntable to rotate, tantalum block claws arranged at equal intervals on the surface of the turntable, and a claw unlocking mechanism. A spherical bearing is installed at the tail end of the tantalum block claw. The claw unlocking mechanism is a fan-shaped pressure plate, which is arranged on the surface of the turntable. The tantalum block claw rotates with the turntable. When the spherical bearing at the tail end passes under the fan-shaped pressure plate, it is pressed down and the tantalum block claw is opened synchronously. When the spherical bearing is separated from the fan-shaped pressure plate, the tantalum block claw is closed synchronously to achieve clamping.

4. A fully automatic spot welding machine according to claim 1, characterized in that: The Teflon sleeve mechanism includes a ring assembly, a material strip loading assembly located on one side of the ring assembly, and an empty material strip winding assembly located on the other side of the ring assembly. The ring assembly pushes the Teflon ring in the material strip onto the tantalum wire.

5. A fully automatic spot welding machine according to claim 1, characterized in that: The spot welding mechanism includes a lower bracket and an upper bracket arranged opposite to each other, a welding flow channel arranged on the surface of the lower bracket to receive the material strip, an upper electrode fixed to the bottom of the upper bracket through a connecting arm, and a lower electrode arranged below the welding flow channel. The upper electrode and the lower electrode are arranged opposite to each other to weld the free end of the tantalum wire to the material strip on the welding flow channel.

6. A fully automatic spot welding machine according to claim 1, characterized in that: The material strip feeding mechanism structure includes a material storage box fixed above the frame, a lifting assembly located below the frame, an air blowing separation assembly and a detection optical fiber located at the opening above the material storage box. The material strips are stacked up and down in the material storage box, and the material strips inside the material storage box are lifted by the lifting assembly below. The material strip conveying assembly sucks the top material strip, and the air blowing separation assembly blows out compressed air synchronously to separate the sucked material strip from the next one.

7. A fully automatic spot welding machine according to claim 1, characterized in that: The product conveying mechanism includes a mounting frame, a first conveying channel and a second conveying channel arranged side by side on the mounting frame, a carrier loaded with material strips arranged on the first conveying channel and the second conveying channel, and a switching module located at both ends of the mounting frame to realize switching of the carrier between the first channel and the second channel. The first conveying channel is used to convey products loaded with material strips to switch between the spot welding mechanism, the second visual inspection mechanism, the cutting mechanism and the finished product handling mechanism, and the second conveying channel realizes the conveyance of empty carriers from the end to the beginning.

8. The fully automatic spot welding machine according to claim 1, characterized in that: The switching module includes a mounting base, linear rails arranged side by side on the mounting base, a supporting base arranged on the linear rails and movable along the linear rails, a pushing cylinder arranged at one end of the mounting base to drive the supporting base to move along the linear rails, and a second pushing cylinder arranged at the other end of the mounting base to push the carrier from the supporting base into the first conveying channel.

9. A fully automatic spot welding machine according to claim 1, characterized in that: The finished product handling mechanism includes a second door beam, a second transverse movement module fixed on the second door beam, a second lifting cylinder installed on a slider of the second transverse movement module, a flipping cylinder arranged at the lower end of the second lifting cylinder, and a vacuum adsorption plate arranged at the end of the flipping cylinder. The vacuum adsorption plate is used to suck the material strip, and the flipping cylinder is used to control it to flip from a horizontal state to a vertical state so as to insert it into the unloading mechanism.

10. The fully automatic spot welding machine according to claim 1, characterized in that: The unloading mechanism includes a silo bracket, a lifting assembly located below the silo bracket to control the change of its upper and lower positions, a silo is placed on the silo bracket, and a plurality of insertion slots are provided at intervals on both sides of the silo to facilitate the insertion of both ends of the material strip to realize unloading.

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