Non-inductive milliohm resistor fully automatic welding forming machine

Abstract

The present invention discloses a fully automatic welding forming machine for non-inductive milliohm resistors, comprising an equipment body, a turntable mechanism arranged on the equipment body, a plurality of resistor workstation blocks arranged on the turntable mechanism, and a core transfer mechanism, a foot piece feeding and transfer mechanism, a foot piece welding mechanism, and a push-unloading mechanism are sequentially arranged corresponding to the resistor workstation blocks along the rotating direction of the turntable; the alloy strip is formed into a resistor core by a feeding and slicing mechanism, and the core transfer mechanism transfers the resistor core to the resistor workstation block, and the foot piece is assembled and welded in the foot piece feeding and transfer mechanism and the foot piece welding mechanism in turn as the turntable rotates, and unloading is performed in the push-unloading mechanism. Multiple workstations for resistor core transfer, foot piece feeding, foot piece welding, and resistor unloading are arranged in the form of a turntable, and the alloy strip is punched and cut to form a resistor core by the feeding and slicing mechanism at the same time, and the foot piece assembly, welding, and unloading are completed in turn as the turntable rotates, and the whole process runs automatically.

Description

Technical Field

[0001] The invention relates to the technical field of resistor production and manufacturing, and in particular to a fully automatic welding forming machine for non-inductive milliohm resistors. Background Art

[0002] Non-inductive milliohm resistors are low-resistance resistors (generally less than 1Ω), also known as sampling resistors, current detection resistors, etc. Non-inductive milliohm resistors are characterized by strong conductivity, large overcurrent, and very small inductive reactance, which can be ignored. Due to its small resistance, it has little effect on the circuit itself when placed in the circuit, and can be used to sample the current in the line; at the same time, due to its very small inductance value, only a few microhenries, it performs well in medium and high frequency circuits.

[0003] From a manufacturing perspective, the production process of non-inductive milliohm resistors involves the use of precision alloy materials and the application of special processes. First, the precision alloy material is made into a sheet resistor core through a special process; then, the pins need to be welded on this sheet resistor core to complete the manufacture of the resistor. However, the current pin welding method has an obvious efficiency bottleneck. The existing technology mainly relies on manual operation. The specific process includes: workers manually clamp and position the resistor core on the fixture, then put in the pins one by one, and finally use a welder to weld the pins to the resistor core. This manual-dependent production method seriously restricts the production efficiency of non-inductive milliohm resistors and is difficult to meet the needs of the modern electronics industry for large-scale, high-quality production. At the same time, manual operation also increases production costs and reduces the competitiveness of enterprises.

[0004] In view of the above problems, the existing technology needs to be improved urgently. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a fully automatic welding forming machine for non-inductive milliohm resistors, which can realize automatic loading, assembly and unloading of resistor cores and pins, and has automatic operation and high production efficiency.

[0006] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0007] A fully automatic welding forming machine for non-inductive milliohm resistors comprises an equipment body, a turntable mechanism arranged on the equipment body, a plurality of resistor workstation blocks are arranged on the turntable mechanism, and a core transfer mechanism, a leg feeding and transfer mechanism, a leg welding mechanism and a pushing and unloading mechanism are sequentially arranged corresponding to the resistor workstation blocks along the rotation direction of the turntable; an alloy strip is formed into a resistor core by a feeding and slicing mechanism, and the core transfer mechanism transfers the resistor core to the resistor workstation block, and as the turntable rotates, the leg feeding and transfer mechanism and the leg welding mechanism are sequentially used for leg assembly and welding, and unloading is performed in the pushing and unloading mechanism.

[0008] Furthermore, the equipment body has a main frame, on which a table panel is arranged, and the feeding and slicing mechanism includes a feeding substrate arranged on the table panel, on which a vertical straightener and a pneumatic feeder are arranged in sequence; along the direction of the alloy strip transfer, a cutting seat plate is arranged at the front end of the feeding substrate through a cutting fixed support, and a flat line slot plate and a flat line lower slot plate are arranged in the cutting seat plate through a flat line slot seat; after the alloy strip is straightened by the vertical straightener, it is intermittently transferred by the pneumatic feeder A flat wire groove is formed between the flat wire upper groove plate and the flat lower groove plate, and a cutting knife and a cutting material receiving seat are arranged just below the outlet position of the flat wire groove. The cutting knife and the cutting material receiving seat are arranged on a cutting knife seat, and the cutting knife seat is installed on the cutting seat plate through a cutting guide slider pair, and the cutting knife seat is driven to reciprocate vertically by a cutting cylinder, so that the cutting knife cuts the alloy strip at the outlet of the flat wire groove to form the resistor core, and the resistor core falls into the cutting material receiving groove of the cutting material receiving seat.

[0009] Furthermore, the core transfer mechanism includes a pneumatic vertical and horizontal moving module arranged on the table panel, the pneumatic vertical and horizontal moving module is provided with a transfer angle seat, a suction nozzle angle rod is arranged in the transfer angle seat, the upper end of the suction nozzle angle rod is provided with a corner block, the lower end of the suction nozzle angle rod is provided with a core bullet-type suction nozzle assembly, one end of the corner block is provided with an angle reset spring, and the other end is provided with an angle action bearing, and a corner baffle is provided on the transfer substrate of the pneumatic vertical and horizontal moving module corresponding to the angle action bearing, as the transfer angle seat reaches above the cutting and receiving groove under the drive of the pneumatic vertical and horizontal moving module; the core bullet-type suction nozzle assembly rotates to absorb the resistor core, then rotates to reset and transfers it to above one of the resistor station blocks on the turntable mechanism, and places the resistor core into the resistor station slot of the resistor station block.

[0010] Furthermore, the turntable mechanism includes a turntable motor and a divider arranged in the main frame. The divider drives the turntable on the table panel to rotate around the fixed disk. Resistance station blocks are evenly arranged on the edge of the turntable, and each resistance station block is provided with a resistance station slot.

[0011] Furthermore, the foot piece feeding and transfer mechanism comprises a foot piece feeding bottom plate, a feeding plate is arranged on the foot piece feeding bottom plate through a plurality of foot piece feeding support rods, a group of material channels are arranged on the upper side of the feeding plate, a foot piece pushing block is arranged at the rear end of the material channel, a foot piece in-position baffle and a foot piece in-position sensor are arranged at the front end of the material channel, a foot piece pushing cylinder is arranged at the lower side of the feeding plate, and the foot piece pushing cylinder drives two of the foot piece pushing blocks through a pushing connecting block; a vertical buffer material clamp is arranged at the rear end of the feeding plate, and the vertical buffer material clamp is arranged with a vertical feeding trough corresponding to each of the material channels, and the resistor foot pieces are stacked and placed in the vertical feeding trough;

[0012] Corresponding to the front end of the material channel, a foot piece suction nozzle assembly is respectively provided. The two foot piece suction nozzle assemblies are fixed on a foot piece suction nozzle mounting plate. The foot piece suction nozzle mounting plate is driven by a pneumatic vertical and horizontal moving module arranged on the table panel, so that the two foot piece suction nozzle assemblies can transfer a group of resistor feet at the front end of the material channel to the corresponding resistor workstation block, and assemble a group of resistor feet to the two ends of the resistor core respectively.

[0013] Furthermore, the foot piece welding mechanism comprises an upper welding assembly, a lower welding assembly and an electric welder, and the electric welder is respectively connected to the upper welding assembly and the lower welding assembly through connection terminals;

[0014] As the turntable rotates, after the two resistor legs are assembled with the resistor core, the two resistor work blocks on the turntable respectively weld one of the resistor legs and the resistor core together, and the upper welding assembly and the lower welding assembly are respectively provided corresponding to each of the resistor work blocks. The electric welder drives the upper welding assembly and the lower welding assembly on the two resistor work blocks to work respectively, and sequentially welds the two resistor legs to the two ends of the resistor core respectively.

[0015] Specifically, the upper welding assembly includes an upper welding support and an upper welding cylinder. The upper welding cylinder is connected to drive an upper welding guide connecting plate. The upper welding guide connecting plate is sequentially installed with an upper welding insulating plate and an upper welding metal block. The upper welding metal block is respectively provided with an upper welding head and an upper welding elastic pressure rod corresponding to the two resistor legs in the resistor work station block. The upper welding metal block is connected to the electric welder through a wiring terminal.

[0016] Specifically, the lower welding assembly includes a lower welding fixing seat and a lower welding cylinder. The lower welding cylinder is connected to drive a lower welding guide connecting plate. The lower welding guide connecting plate is sequentially installed with a lower welding insulating plate and a lower welding metal block. The lower welding metal block is provided with a lower welding head corresponding to the upper welding head. The lower welding metal block is connected to the electric welder through a wiring terminal.

[0017] Furthermore, as the turntable rotates, the two resistor legs and the resistor core are welded together to form a milliohm resistor in the resistor station block, and the resistor station block reaches the pushing and unloading mechanism; the pushing and unloading mechanism includes a push rod arranged directly below the resistor station block, and a unloading suction block arranged directly above the resistor station block, and the ejection cylinder in the main frame drives the push rod through the ejection connecting plate to eject the milliohm resistor upward from the resistor station slot of the resistor station block, and at the same time, the unloading pushing cylinder on the fixed plate drives the unloading suction block through the unloading connecting plate to reach above the resistor station slot, suck up the milliohm resistor and move it out for unloading.

[0018] Specifically, the pneumatic vertical and horizontal moving module includes a transfer support, a transfer substrate arranged on the transfer support, a horizontal transfer cylinder, and a vertical transfer cylinder. The transfer substrate is provided with a horizontal moving plate through a horizontal guide rail slider pair, and the horizontal moving plate is provided with a vertical moving plate through a vertical guide rail slider pair; the horizontal transfer cylinder is connected to drive the horizontal moving plate, and the vertical transfer cylinder is connected to drive the vertical moving plate.

[0019] Beneficial effects of the technical solution of the present invention:

[0020] The fully automatic welding and forming machine of the non-inductive milliohm resistor of the embodiment of the present invention adopts a turntable form to arrange multiple stations for resistor core transfer, foot piece loading, foot piece welding and resistor unloading. At the same time, the alloy strip is punched and cut to form the resistor core through the feeding and slicing mechanism. As the turntable rotates, the resistor station block can pass through each station in turn, thereby realizing the continuity and automation of the entire production process. The core transfer mechanism transfers the resistor core formed by the feeding and slicing mechanism to the resistor station block for subsequent processing; the foot piece loading and transfer mechanism is used to transfer and assemble the resistor foot piece to the two ends of the resistor core to ensure the integrity and functionality of the resistor; the foot piece welding mechanism welds the resistor foot piece and the resistor core together to ensure the electrical performance and mechanical strength of the resistor; the push unloading mechanism finally transfers and unloads the finished resistor from the resistor station block to complete the entire production process. Through the mutual cooperation of these mechanisms, the fully automatic welding and forming of the non-inductive milliohm resistor is realized, thereby greatly improving the production efficiency, reducing the need for manual operation, and ensuring the consistency and quality of the product.

[0021] Among them, the feeding and slicing mechanism of the present application ensures that the alloy strip can be accurately and intermittently transferred to the flat wire groove after straightening through a vertical straightener and a pneumatic feeder, and the cutting cylinder drives the cutting knife seat to move vertically back and forth, so that the cutting knife can accurately cut the alloy strip to form a resistor core, and make the resistor core fall into the cutting slot on the cutting receiving seat; compared with the prior art, the technical solution of the present application improves production efficiency, realizes the automation of resistor core production and accurately positions the resistor core, reduces the error and labor intensity of manual operation, and facilitates subsequent transfer.

[0022] In addition, the present application solves the problem of automatic loading and transfer of resistor pins through a pin loading and transfer mechanism. The structure of the pin loading base plate and the loading plate enables the resistor pins to be automatically transferred through the material channel, and the cooperation of the push block and the push cylinder ensures that the resistor pins can be accurately pushed into place; the combination of the pin suction nozzle assembly and the pneumatic vertical and horizontal moving module realizes the automatic suction and transfer of the resistor pins, ensuring that the resistor pins can be accurately installed at both ends of the resistor core. Through the synergistic effect of these technical features, the fully automatic loading and transfer of the resistor pins is realized, which improves production efficiency.

[0023] Furthermore, the present application adopts two foot piece welding mechanisms, and each resistor station block of the two welding stations is respectively provided with an upper welding assembly and a lower welding assembly. By providing the upper welding assembly and the lower welding assembly, the electric welder drives the two welding assemblies to work respectively, saving an electric welder and realizing efficient welding of the resistor foot piece and the resistor core. This technical solution not only improves production efficiency, but also ensures the stability and consistency of welding quality. Compared with the prior art, the welding process of the present application is more automated, reduces the need for manual operation, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 A top view of the structure of a fully automatic welding and forming machine for non-inductive milliohm resistors according to an embodiment of the present invention;

[0026] Figure 2 This is a main structural diagram of a non-inductive milliohm resistor fully automatic welding forming machine according to an embodiment of the present invention;

[0027] Figure 3 3D structure diagram of the fully automatic welding forming machine for non-inductive milliohm resistors according to an embodiment of the present invention;

[0028] Figure 4 It is a partially omitted three-dimensional structure diagram of the fully automatic welding forming machine for non-inductive milliohm resistors according to an embodiment of the present invention;

[0029] Figure 5 The three-dimensional structure of the feeding and slicing mechanism of the embodiment of the present invention is Figure 1 ;

[0030] Figure 6 The three-dimensional structure of the feeding and slicing mechanism of the embodiment of the present invention is Figure 2 ;

[0031] Figure 7 The three-dimensional structure of each station mechanism around the turntable of the embodiment of the present invention Figure 1 ;

[0032] Figure 8 The three-dimensional structure of each station mechanism around the turntable of the embodiment of the present invention Figure 2 ;

[0033] Fig. 9 The three-dimensional structure of each station mechanism around the turntable of the embodiment of the present invention Figure 3 ;

[0034] Fig.10 The three-dimensional structure of each station mechanism around the turntable of the embodiment of the present invention Figure 4 ;

[0035] Fig.11 The three-dimensional structure of each station mechanism around the turntable of the embodiment of the present invention Figure 5 ;

[0036] Fig.12 The three-dimensional structure of each station mechanism around the turntable of the embodiment of the present invention Figure 6 ;

[0037] Fig.13 The three-dimensional structure of each station mechanism around the turntable of the embodiment of the present invention Figure 7 ;

[0038] Fig.14 3D structure diagram of the non-inductive milliohm resistor according to an embodiment of the present invention;

[0039] Among them, 10-equipment body, 110-main frame, 120-table panel, 130-adjustable support feet, 140-electromagnetic control valve group, 150-pneumatic vertical and horizontal moving module;

[0040] 151-transfer support, 152-transfer substrate, 153-horizontal moving plate, 154-horizontal guide rail slider pair, 155-horizontal transfer cylinder, 156-horizontal transfer buffer, 157-horizontal transfer limiter, 158-vertical moving plate, 159-vertical guide rail slider pair, 1510-vertical transfer cylinder, 1511-vertical transfer limiter;

[0041] 20-feeding and slicing mechanism, 21-feeding base plate, 22-vertical straightener, 23-pneumatic feeder, 24-feeding sensor, 25-cutting seat plate, 26-cutting fixed support, 27-flat wire groove seat, 28-flat wire lower groove plate, 29-flat wire lower groove plate, 210-cutting knife, 211-cutting receiving seat, 2111-cutting receiving groove, 212-cutting knife seat, 213-cutting guide slider pair, 214-cutting cylinder, 215-cutting knife adjustment support nut, 216-cutting limit block, 217-cutting in place sensor, 218-suction gas line connector;

[0042] 30-core transfer mechanism, 31-transfer angle seat, 32-nozzle angle rod, 33-core bullet nozzle assembly, 34-angle block, 35-angle return spring, 36-angle action bearing, 37-angle baffle, 38-angle limit block;

[0043] 40-turntable mechanism, 41-turntable, 42-divider, 43-turntable motor, 44-origin induction assembly, 45-resistance station block, 451-resistance station slot, 46-insulating pad, 47-transfer to position sensor, 48-fixed disk;

[0044] 50-foot feeding and transferring mechanism, 51-foot feeding bottom plate, 52-foot feeding support rod, 53-feeding plate, 531-material channel, 54-material channel cover plate, 55-foot in-position baffle, 56-foot in-position sensor, 57-foot pushing block, 58-pushing connecting block, 59-foot pushing cylinder, 510-vertical buffer material clamp, 5101-vertical feeding trough, 511-feeding fixed block;

[0045] 512-foot piece suction nozzle mounting plate, 513-foot piece suction nozzle assembly;

[0046] 60-foot piece welding mechanism, 610-upper welding assembly;

[0047] 611-upper welding support, 612-upper welding cylinder, 613-upper welding guide connecting plate, 614-upper welding insulating plate, 615-upper welding metal block, 616-upper welding head, 617-upper welding elastic pressure rod;

[0048] 620-lower welding assembly;

[0049] 621-lower welding fixing seat, 622-lower welding cylinder, 623-lower welding guide connecting plate, 624-lower welding insulating plate, 625-lower welding metal block, 626-lower welding head; 630-connection terminal, 640-electric welding machine;

[0050] 70-feeding mechanism, 71-ejection cylinder, 72-ejection connecting plate, 73-ejector rod, 74-feeding pushing cylinder, 75-feeding connecting plate, 76-feeding suction block, 77-feeding gas line connector;

[0051] 80-milliohm resistor, 810-resistor core, 820-resistor foot;

[0052] 90-display controller;

[0053] 100-Alloy Strip. DETAILED DESCRIPTION

[0054] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0055] like Fig.14 As shown, the milliohm resistor 80 involved in the embodiment of the present invention is an alloy resistor used in the form of a bare chip, including a resistor core 810 and resistor legs 820 arranged at both ends of the resistor core 810; the purpose of the present invention is to obtain the resistor core 810 by automatic punching, and to realize automatic assembly and welding of the resistor core 810 and the resistor legs 820.

[0056] Example 1

[0057] like Figure 1-4 As shown, an embodiment of the present invention provides a fully automatic welding forming machine for non-inductive milliohm resistors, including an equipment body 10, a turntable mechanism 40 arranged on the equipment body 10, a plurality of resistor workstation blocks 45 are arranged on the turntable mechanism 40, and along the rotation direction of the turntable, a core transfer mechanism 30, a foot piece loading and transfer mechanism 50, a foot piece welding mechanism 60 and a pushing and unloading mechanism 70 are sequentially arranged corresponding to the resistor workstation blocks 45; an alloy strip 100 is formed into a resistor core 810 through a feeding and slicing mechanism 20, and the core transfer mechanism 30 transfers the resistor core 810 to the resistor workstation block 45, and as the turntable rotates, the foot piece loading and transfer mechanism 50 and the foot piece welding mechanism 60 are sequentially assembled and welded, and unloading is performed in the pushing and unloading mechanism 70.

[0058] like Figure 1 , 56, the equipment body 10 has a main frame 110, on which a table panel 120 is arranged, and the feeding and slicing mechanism 20 includes a feeding substrate 21 arranged on the table panel 120, on which a vertical straightener 22 and a pneumatic feeder 23 are arranged in sequence; along the moving direction of the alloy strip 100, a cutting seat plate 25 is arranged at the front end of the feeding substrate 21 through a cutting fixed support 26, and a flat line groove plate 28 and a flat line lower groove plate 29 are arranged in the cutting seat plate 25 through a flat line groove seat 27; after the alloy strip 100 is straightened by the vertical straightener 22, it is intermittently transferred to the A flat wire trough is formed between the flat wire upper trough plate 28 and the flat wire lower trough plate 29, and a cutting knife 210 and a cutting material receiving seat 211 are arranged just below the outlet position of the flat wire trough. The cutting knife 210 and the cutting material receiving seat 211 are arranged on a cutting knife seat 212, and the cutting knife seat 212 is installed on the cutting seat plate 25 through a cutting guide slider pair 213, and the cutting knife seat 212 is driven to reciprocate vertically by a cutting cylinder 214, so that the cutting knife 210 cuts the alloy strip 100 at the outlet of the flat wire trough to form the resistor core 810, and the resistor core 810 falls into the cutting material receiving trough 2111 of the cutting material receiving seat 211.

[0059] Specifically, the cutting knife 210 is installed on one side of the cutting material receiving seat 211 through a cutting knife seat 212, and a cutting knife adjustment support nut 215 is provided at the bottom of the cutting knife 210; a cutting limit block 216 and a cutting position sensor 217 are provided on the other side of the cutting material receiving seat 211 corresponding to the front end of the cutting material receiving groove 2111.

[0060] Optionally, a suction air circuit connector 218 is provided in the cutting material receiving seat 211 corresponding to the cutting material receiving groove 2111 , and the resistor core 810 is adsorbed and positioned in the cutting material receiving groove 2111 after the cutting knife 210 cuts the alloy strip 100 .

[0061] Optionally, a feeding sensor 24 is provided on the transfer path of the vertical straightener 22 and the pneumatic feeder 23. The vertical straightener 22 and the pneumatic feeder 23 are existing parts, and the pneumatic feeder 23 can realize intermittent feeding of the strip.

[0062] like Figure 7 , 8As shown, the core transfer mechanism 30 includes a pneumatic vertical and horizontal moving module 150 arranged on the table panel 120, and a transfer corner seat 31 is arranged on the pneumatic vertical and horizontal moving module 150. A suction nozzle corner rod 32 is arranged in the transfer corner seat 31, and a corner block 34 is arranged at the upper end of the suction nozzle corner rod 32. A core bullet-type suction nozzle assembly 33 is arranged at the lower end of the suction nozzle corner rod 32, and an angle return spring 35 is arranged at one end of the corner block 34, and an angle action bearing 36 is arranged at the other end, corresponding to the angle action A corner baffle 37 is provided on the transfer substrate 152 of the pneumatic vertical and horizontal moving module 150 with a bearing 36, and as the transfer corner seat 31 is driven by the pneumatic vertical and horizontal moving module 150 to reach above the cutting and receiving groove 2111; the core bullet-type suction nozzle assembly 33 rotates to absorb the resistor core 810, and then rotates to reset and transfer it to above one of the resistor station blocks 45 on the turntable mechanism 40, and places the resistor core 810 into the resistor station slot 451 of the resistor station block 45.

[0063] Optionally, a corner limiting block 38 is further provided on one side of the corner return spring 35 corresponding to the corner block 34 .

[0064] like Figure 7 , 8 As shown in FIG. 13 , the turntable mechanism 40 includes a turntable motor 43 and a divider 42 arranged in the main frame 110 . The divider 42 drives the turntable 41 on the table panel 120 to rotate around the fixed disk 48 . The edge of the turntable 41 is evenly provided with resistance station blocks 45 , and each resistance station block 45 is provided with a resistance station slot 451 .

[0065] Optionally, each of the resistor work block 45 is installed on the turntable 41 via an insulating spacer 46 , and a transfer position sensor 47 is provided on the table panel 120 for the resistor work block 45 corresponding to the transfer position.

[0066] Optionally, an origin sensing component 44 is disposed on the rotating shaft of the divider 42 for acquiring the initial position of the turntable 41 .

[0067] like Fig. 9 , 10As shown, the foot piece loading and transfer mechanism 50 includes a foot piece loading bottom plate 51, on which a loading plate 53 is arranged through a plurality of foot piece loading support rods 52, a group of material channels 531 are provided on the upper side of the loading plate 53, a foot piece pushing block 57 is provided at the rear end of the material channel 531, a foot piece in-position baffle 55 and a foot piece in-position sensor 56 are provided at the front end of the material channel 531, a foot piece pushing cylinder 59 is provided at the lower side of the loading plate 53, and the foot piece pushing cylinder 59 drives the two foot piece pushing blocks 57 through a pushing connecting block 58; a vertical buffer material clamp 510 is provided at the rear end of the loading plate 53, and the vertical buffer material clamp 510 is provided with a vertical loading trough 5101 corresponding to each of the material channels 531, and the resistor foot pieces 820 are stacked and placed in the vertical loading trough 5101;

[0068] Corresponding to the front end of the material channel 531, there are respectively provided foot piece suction nozzle assemblies 513, and the two foot piece suction nozzle assemblies 513 are fixed on a foot piece suction nozzle mounting plate 512. The foot piece suction nozzle mounting plate 512 is driven by a pneumatic vertical and horizontal moving module 150 arranged on the table panel 120, so that the two foot piece suction nozzle assemblies 513 can transfer a group of resistor feet 820 at the front end of the material channel 531 to the corresponding resistor workstation block 45, and assemble a group of resistor feet 820 to the two ends of the resistor core 810 respectively.

[0069] Optionally, a material channel cover plate 54 is provided corresponding to the material channel 531 .

[0070] Optionally, the two sides of the vertical buffer material clamp 510 are installed on the upper side of the rear end of the material channel 531 through a plurality of loading fixing blocks 511 .

[0071] like Fig.11 , 12 As shown, the foot piece welding mechanism 60 includes an upper welding assembly 610, a lower welding assembly 620 and an electric welder 640, and the electric welder 640 is connected to the upper welding assembly 610 and the lower welding assembly 620 respectively through a connection terminal 630;

[0072] As the turntable rotates, after the two resistor legs 820 are assembled with the resistor core 810, the two resistor work blocks 45 on the turntable 41 respectively weld one of the resistor legs 820 and the resistor core 810 together, and the upper welding assembly 610 and the lower welding assembly 620 are respectively provided corresponding to each of the resistor work blocks 45. The electric welder 640 drives the upper welding assemblies 610 and the lower welding assemblies 620 on the two resistor work blocks 45 to work respectively, and welds the two resistor legs 820 to the two ends of the resistor core 810 in turn.

[0073] Specifically, the upper welding assembly 610 includes an upper welding support 611 and an upper welding cylinder 612. The upper welding cylinder 612 is connected to drive an upper welding guide connecting plate 613. The upper welding guide connecting plate 613 is sequentially installed with an upper welding insulating plate 614 and an upper welding metal block 615. The upper welding metal block 615 is respectively provided with an upper welding head 616 and an upper welding elastic pressure rod 617 corresponding to the two resistor pins 820 in the resistor work station block 45. The upper welding metal block 615 is connected to the electric welder 640 via a terminal block 630.

[0074] Specifically, the lower welding assembly 620 includes a lower welding fixed seat 621 and a lower welding cylinder 622. The lower welding cylinder 622 is connected to drive a lower welding guide connecting plate 623. The lower welding guide connecting plate 623 is sequentially installed with a lower welding insulating plate 624 and a lower welding metal block 625. The lower welding metal block 625 is provided with a lower welding head 626 corresponding to the upper welding head 616. The lower welding metal block 625 is connected to the electric welder 640 through a wiring terminal 630.

[0075] When in use, each resistor workstation block 45 at the welding position is respectively provided with an upper welding assembly 610 and a lower welding assembly 620. The upper welding head 616 and the lower welding head 626 are at different positions on the two resistor workstation blocks 45, respectively corresponding to a resistor leg 820. One electric welder 640 completes the welding of two resistor legs 820 in sequence, and two workstations are used for welding the resistor legs 820, thereby saving one electric welder 640.

[0076] like Figure 7-13 As shown, as the turntable rotates, the two resistor legs 820 are welded to the resistor core 810 to form a milliohm resistor 80 in the resistor station block 45, and the resistor station block 45 reaches the pushing and unloading mechanism 70; the pushing and unloading mechanism 70 includes a push rod 73 arranged directly below the resistor station block 45, and a material unloading suction block 76 arranged directly above the resistor station block 45, and the ejection cylinder 71 in the main frame 110 drives the push rod 73 through the ejection connecting plate 72 to eject the milliohm resistor 80 upward from the resistor station slot 451 of the resistor station block 45, and at the same time, the unloading pushing cylinder 74 on the fixed plate 48 drives the unloading suction block 76 to reach above the resistor station slot 451 through the unloading connecting plate 75, sucks the milliohm resistor 80 and moves it outward for unloading.

[0077] Optionally, a material discharge gas circuit connector 77 is provided on the material discharge suction block 76. The material discharge gas circuit connector 77 is used to connect to the gas source system to provide a negative pressure adsorption milliohm resistor 80.

[0078] like Figure 7 , 8As shown, the pneumatic vertical and horizontal moving module 150 includes a transfer support 151, a transfer substrate 152 arranged on the transfer support 151, a horizontal transfer cylinder 155, and a vertical transfer cylinder 1510. The transfer substrate 152 is provided with a horizontal moving plate 153 through a horizontal guide rail slider pair 154, and the horizontal moving plate 153 is provided with a vertical moving plate 158 through a vertical guide rail slider pair 159; the horizontal transfer cylinder 155 is connected to drive the horizontal moving plate 153, and the vertical transfer cylinder 1510 is connected to drive the vertical moving plate 158.

[0079] Optionally, a horizontal transfer buffer 156 and a horizontal transfer limit 157 are provided on the transfer substrate 152 corresponding to both sides of the horizontal moving plate 153 ; a vertical transfer limit 1511 is provided on the horizontal moving plate 153 corresponding to the upper and lower sides of the vertical moving plate 158 .

[0080] like Figure 1-4 As shown, the equipment body 10 includes a main frame 110 and a table panel 120 on the main frame 110. An adjustable support foot 130 is provided at the lower end of the main frame 110. In addition, the equipment body 10 also includes an air source system, a pneumatic control component, an electromagnetic control valve group 140, etc., which are existing market-purchased components and will not be described in detail.

[0081] Optionally, a display controller 90 is also provided on the table panel 120 through a column, and the display controller 90 is electrically connected to the feeding and slicing mechanism 20, the core transfer mechanism 30, the turntable mechanism 40, the foot loading and transfer mechanism 50, the foot welding mechanism 60, the pushing and unloading mechanism 70, and the pneumatic vertical and horizontal moving module 150.

[0082] The fully automatic welding and forming machine for the non-inductive milliohm resistor in the embodiment of the present invention adopts a turntable to arrange multiple workstations for resistor core transfer, pin loading, pin welding and resistor unloading. At the same time, the alloy strip is punched and cut to form the resistor core through the feeding and slicing mechanism. As the turntable rotates, the pin assembly, welding and unloading are completed in sequence; the whole process runs automatically, the structure is compact and the operation efficiency is high.

[0083] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A fully automatic welding forming machine for non-inductive milliohm resistors, characterized in that: It comprises an equipment body, a turntable mechanism arranged on the equipment body, a plurality of resistance workstation blocks are arranged on the turntable mechanism, and a core transfer mechanism, a foot piece feeding and transfer mechanism, a foot piece welding mechanism and a pushing and unloading mechanism are sequentially arranged corresponding to the resistance workstation blocks along the rotation direction of the turntable; the alloy strip is formed into a resistance core by a feeding and slicing mechanism, the core transfer mechanism transfers the resistance core to the resistance workstation block, and the foot piece is assembled and welded in the foot piece feeding and transfer mechanism and the foot piece welding mechanism in sequence as the turntable rotates, and unloading is performed in the pushing and unloading mechanism; The equipment body comprises a main frame, a table panel is arranged on the main frame, the feeding and slicing mechanism comprises a feeding substrate arranged on the table panel, a vertical straightener and a pneumatic feeder are arranged on the feeding substrate in sequence; along the moving direction of the alloy strip, a cutting seat plate is arranged at the front end of the feeding substrate through a cutting fixed support, a flat line slot plate and a flat line lower slot plate are arranged in the cutting seat plate through a flat line slot seat; after the alloy strip is straightened by the vertical straightener, it is intermittently transferred to the flat line slot formed between the flat line slot plate and the flat line lower slot plate by the pneumatic feeder, a cutting knife and a cutting material receiving seat are arranged just below the outlet position of the flat line slot, the cutting knife and the cutting material receiving seat are arranged on a cutting knife seat, the cutting knife seat is mounted on the cutting seat plate through a cutting guide slider pair, and the cutting knife seat is driven to move vertically back and forth by a cutting cylinder, so that the cutting knife cuts the alloy strip at the outlet of the flat line slot to form the resistor core, and the resistor core falls into the cutting material receiving slot of the cutting material receiving seat; The core transfer mechanism includes a pneumatic vertical and horizontal moving module arranged on the table panel, a transfer angle seat is arranged on the pneumatic vertical and horizontal moving module, a nozzle angle rod is arranged in the transfer angle seat, a corner block is arranged at the upper end of the nozzle angle rod, a core bullet-type nozzle assembly is arranged at the lower end of the nozzle angle rod, an angle reset spring is arranged at one end of the corner block, and an angle action bearing is arranged at the other end, and a corner baffle is arranged on the transfer substrate of the pneumatic vertical and horizontal moving module corresponding to the angle action bearing, as the transfer angle seat reaches above the cutting and receiving groove under the drive of the pneumatic vertical and horizontal moving module; the core bullet-type nozzle assembly rotates to absorb the resistor core, then rotates to reset and transfers it to above one of the resistor station blocks on the turntable mechanism, and places the resistor core into the resistor station slot of the resistor station block; The foot piece loading and transfer mechanism includes a foot piece loading bottom plate, a loading plate is arranged on the foot piece loading bottom plate through a plurality of foot piece loading support rods, a group of material channels are arranged on the upper side of the loading plate, a foot piece pushing block is arranged at the rear end of the material channel, a foot piece in-position baffle and a foot piece in-position sensor are arranged at the front end of the material channel, a foot piece pushing cylinder is arranged on the lower side of the loading plate, and the foot piece pushing cylinder drives the two foot piece pushing blocks through a pushing connecting block; a vertical buffer material clamp is arranged at the rear end of the loading plate, and the vertical buffer material clamp is Each of the material channels is provided with a vertical material loading trough, and the resistor legs are stacked and placed in the vertical material loading trough; a leg suction nozzle assembly is respectively provided at the front end of the corresponding material channels, and two of the leg suction nozzle assemblies are fixed on a leg suction nozzle mounting plate, and the leg suction nozzle mounting plate is driven by a pneumatic vertical and horizontal moving module arranged on the table panel, so that the two leg suction nozzle assemblies transfer a group of resistor legs at the front end of the material channel to the corresponding resistor workstation block, and assemble a group of resistor legs to the two ends of the resistor core respectively.

2. The fully automatic welding forming machine for non-inductive milliohm resistor according to claim 1 is characterized in that: The turntable mechanism includes a turntable motor and a divider arranged in the main frame. The divider drives the turntable on the table panel to rotate around the fixed disk. Resistance workstation blocks are evenly arranged on the edge of the turntable, and each resistance workstation block is provided with a resistance workstation slot.

3. The fully automatic welding forming machine for non-inductive milliohm resistor according to claim 1 is characterized in that: The leg welding mechanism includes an upper welding assembly, a lower welding assembly and an electric welder, and the electric welder is connected to the upper welding assembly and the lower welding assembly respectively through terminal blocks; as the turntable rotates, after the two resistor legs are assembled with the resistor core, the two resistor work blocks on the turntable respectively weld one of the resistor legs and the resistor core together, and the upper welding assembly and the lower welding assembly are respectively provided corresponding to each of the resistor work blocks, and the electric welder drives the upper welding assembly and the lower welding assembly on the two resistor work blocks to work respectively, and sequentially welds the two resistor legs to the two ends of the resistor core respectively.

4. The fully automatic welding forming machine for non-inductive milliohm resistor according to claim 3 is characterized in that: The upper welding assembly includes an upper welding support and an upper welding cylinder. The upper welding cylinder is connected to drive an upper welding guide connecting plate. The upper welding guide connecting plate is sequentially installed with an upper welding insulating plate and an upper welding metal block. The upper welding metal block is respectively provided with an upper welding head and an upper welding elastic pressure rod corresponding to the two resistor legs in the resistor station block. The upper welding metal block is connected to the electric welder through a wiring terminal.

5. The fully automatic welding forming machine for non-inductive milliohm resistor according to claim 4 is characterized in that: The lower welding assembly includes a lower welding fixing seat and a lower welding cylinder. The lower welding cylinder is connected to drive a lower welding guide connecting plate. The lower welding guide connecting plate is sequentially installed with a lower welding insulating plate and a lower welding metal block. The lower welding metal block is provided with a lower welding head corresponding to the upper welding head. The lower welding metal block is connected to the electric welder through a wiring terminal.

6. The fully automatic welding forming machine for non-inductive milliohm resistor according to claim 1, characterized in that: As the turntable rotates, the two resistor legs and the resistor core are welded together to form a milliohm resistor in the resistor station block, and the resistor station block reaches the pushing and unloading mechanism; the pushing and unloading mechanism includes a push rod arranged directly below the resistor station block, and a unloading suction block arranged directly above the resistor station block. The ejection cylinder in the main frame drives the push rod through the ejection connecting plate to eject the milliohm resistor upward from the resistor station slot of the resistor station block. At the same time, the unloading pushing cylinder on the fixed disk drives the unloading suction block to the top of the resistor station slot through the unloading connecting plate, absorbs the milliohm resistor and moves it outward for unloading.

7. The fully automatic welding forming machine for non-inductive milliohm resistor according to claim 1 is characterized in that: The pneumatic vertical and horizontal moving module includes a transfer support, a transfer substrate arranged on the transfer support, a horizontal transfer cylinder, and a vertical transfer cylinder. The transfer substrate is provided with a horizontal moving plate through a horizontal guide rail slider pair, and the horizontal moving plate is provided with a vertical moving plate through a vertical guide rail slider pair; the horizontal transfer cylinder is connected to drive the horizontal moving plate, and the vertical transfer cylinder is connected to drive the vertical moving plate.

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