A metal wire automatic bending machine and automatic bending method thereof

Abstract

A metal wire automatic bending machine and an automatic bending method thereof, the metal wire automatic bending machine comprises: a stepping transport mechanism, including a main frame, a lifting mechanism and a translation mechanism, the lifting mechanism is installed on the main frame, the translation mechanism is connected to the lifting mechanism, the translation mechanism is horizontally switched between the first, second, third, fourth and moving-out stations respectively arranged in sequence relative to the main frame, and a transport gripper is arranged on the translation mechanism; a first bending mechanism is arranged on the first station, used to symmetrically bend a fixed-length metal straight line into a U-shaped metal wire; a second bending mechanism is arranged on the second station, used to symmetrically bend the end of the U-shaped metal wire into an outward-turned structure; a third bending mechanism is arranged on the third station, used to symmetrically bend the U-shaped metal wire with the end turned outward inward; and a fourth bending mechanism is arranged on the fourth station, used to bend the inward-folded U-shaped metal wire into a finished hanging ear product. The present invention also discloses a corresponding metal wire automatic bending method.

Description

Technical Field

[0001] The invention relates to a metal processing technology, in particular to an automatic metal wire bending machine and an automatic bending method thereof. Background Art

[0002] In the prior art, the lifting ear products formed by bending metal wires are formed by using straight metal wires of fixed lengths and bending them several times to finally form them. The lifting ear products were initially produced manually using simple tooling such as bending vises. As the output increased, more manpower was required in the production process, the degree of automation was not high, the production efficiency was low, and the quality of the products produced was unstable. The prior art has the defects of manual bending to produce lifting ears, which is time-consuming and labor-intensive, with high work intensity, low production efficiency, unstable quality, and inability to realize automated production according to the beat. There is an urgent need for an automatic bending machine for metal wires that can be automatically bent and formed according to a certain production beat, so that the straight metal wires of fixed lengths can be loaded and positioned according to the beat, bent and formed and taken off the line according to the beat, and can meet the interface of subsequent automated equipment, that is, the lifting ear products can be taken off the line according to the beat, and the subsequent equipment can automatically grab them and enter the next process for production according to the beat. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an automatic metal wire bending machine and an automatic bending method thereof in view of the above-mentioned defects of the prior art.

[0004] In order to achieve the above object, the present invention provides an automatic wire bending machine, which comprises:

[0005] A step-by-step transport mechanism, comprising a main frame, a lifting mechanism and a translation mechanism, wherein the lifting mechanism is mounted on the main frame and moves up and down along the main frame, the translation mechanism is connected to the lifting mechanism, and the translation mechanism horizontally switches between a first station, a second station, a third station, a fourth station and a moving-out station arranged in sequence relative to the main frame, and the translation mechanism is provided with a first transport gripper relative to the first station, the second station and the third station, respectively, and a second transport gripper relative to the fourth station;

[0006] A first bending mechanism, disposed on the first station, for symmetrically bending a fixed-length metal line into a U-shaped metal line;

[0007] A second bending mechanism, disposed on the second station, for symmetrically bending the end of the U-shaped metal wire transported to the second station by the stepping transport mechanism into an outward-turned structure;

[0008] A third bending mechanism is disposed on the third station and is used to symmetrically bend the U-shaped metal wire with the end portion of the outward-turned structure transported by the stepping transport mechanism to the third station into an inward-turned shape; and

[0009] The fourth bending mechanism is arranged on the fourth station and is used to bend the U-shaped metal wire that is inwardly folded and transported to the fourth station by the stepping transport mechanism into a finished hanging ear product.

[0010] The above-mentioned automatic metal wire bending machine, wherein the lifting mechanism includes a lifting frame, a lifting cylinder, a lifting guide rail, a lifting slider and a lifting limit piece, the lifting guide rail is installed on the main frame, the lifting frame is connected to the lifting guide rail through the lifting slider, the lifting cylinder is installed at the bottom of the main frame and connected to the lifting frame to drive the lifting frame to move up and down relative to the main frame; the lifting limit piece is installed on the main frame corresponding to the bottom end of the lifting guide rail to ensure that the descending height of the lifting frame is adapted to the grabbing position height of the workpiece.

[0011] The above-mentioned automatic metal wire bending machine, wherein the translation mechanism includes: a translation cylinder, a translation beam, a translation guide rail, a transverse slider, a translation stopper and a translation limiter, the translation beam is installed on the translation guide rail, the translation guide rail is connected to the transverse slider, the transverse slider is installed on the front panel of the lifting frame, the translation cylinder is connected to the translation beam and drives the translation beam to move back and forth horizontally, the translation stopper is installed at the lower end of the translation beam, and cooperates with the translation limiter to ensure the stepping distance of the translation, the front side of the translation beam is respectively equipped with the first carrying gripper corresponding to the first station, the second station and the third station, and the second carrying gripper is installed corresponding to the fourth station.

[0012] The above-mentioned automatic wire bending machine, wherein the first bending mechanism comprises:

[0013] A frame platform is arranged at the first work station, and a guide groove is arranged on the table surface of the frame platform;

[0014] A lifting mechanism, comprising a lifting beam, a lifting cylinder and a guide port, wherein the guide port is installed on one side of the guide groove, the lifting beam is located below the table top of the frame platform and is arranged opposite to the guide groove, and the lifting cylinder is installed on the frame platform and connected to the lifting beam;

[0015] The first positioning mechanism comprises a forming positioning block, a dynamic forming block and a bending pressing plate, wherein the forming positioning block is mounted on the table top of the frame platform and is located on one side of the guide groove, and a first groove is provided corresponding to the forming positioning block; the bending pressing plate is mounted on the table top of the frame platform through a pressing plate slide rail and is located on the other side of the guide groove; the dynamic forming block is symmetrically arranged corresponding to the forming positioning block and is hinged to the bending pressing plate, and the dynamic forming block has a forming surface adapted to the forming positioning block; and

[0016] The first forming mechanism includes a first bending pressurizing cylinder and a pressure swing arm. The first bending pressurizing cylinder is installed on the frame platform and connected to the pressure swing arm. The pressure swing arm is connected to the bending pressure plate through a pressure plate cross beam.

[0017] The above-mentioned automatic metal wire bending machine, wherein the bending pressure plate is also provided with an elastic driving part, including a forming elastic pressure block, a spring adjustment rod and a spring, the spring adjustment rod is installed on the bending pressure plate, the front end of the forming elastic pressure block abuts against the rear end of the dynamic forming block, and the two ends of the spring abut against the spring adjustment rod and the rear end of the forming elastic pressure block respectively.

[0018] The above-mentioned automatic wire bending machine, wherein the second bending mechanism comprises:

[0019] An installation substrate is arranged on the second station;

[0020] The second positioning mechanism comprises a positioning block, a bending fixed block, a bending movable block and an intermediate limiting block, wherein the positioning block is arranged on the mounting base plate, the intermediate limiting block is arranged corresponding to the positioning block, the bending fixed blocks are symmetrically arranged on both sides of the intermediate limiting block, the bending movable block is symmetrically arranged at one end of the intermediate limiting block corresponding to the bending fixed block, and the bending movable block and the bending fixed block are respectively provided with mutually adapted processing surfaces; a second groove is arranged on the mounting base plate corresponding to the positioning block; and

[0021] The second forming mechanism includes a second bending pressure cylinder, a second bending slide, a second bending guide rail, a second movable bending base slider, a second bending slide guide rail and a second bending connecting rod. The second bending pressure cylinder is connected to the second bending slide, and the second bending slide is installed on the bottom surface of the mounting base through the second bending slide guide rail. One end of the symmetrically arranged second bending connecting rod is respectively hinged to the second bending slide, and the other end of the second bending connecting rod is respectively connected to the second movable bending base slider. The second movable bending base slider is installed on the bottom surface of the mounting base through the second bending guide rail. The second movable bending base slider is respectively connected to the bending moving block, and drives the bending moving block to move synchronously toward or away from each other.

[0022] The above-mentioned automatic wire bending machine, wherein the third bending mechanism comprises:

[0023] A substrate is arranged on the third station;

[0024] A third positioning mechanism is installed on the substrate, comprising a positioning member, a bending fixed member, a bending movable member and an intermediate limiting member, wherein the positioning member is arranged on the substrate, the intermediate limiting member is arranged corresponding to the positioning member, the bending fixed member is symmetrically arranged on both sides of the intermediate limiting member, the bending movable member is symmetrically arranged on both sides of the intermediate limiting member corresponding to the bending fixed member, and the bending movable member and the intermediate limiting member are respectively provided with mutually adapted processing surfaces; a third groove is arranged on the substrate corresponding to the positioning member; and

[0025] The third forming mechanism includes a third bending pressurizing cylinder, a third bending slide, a third bending slider, a third bending swing arm, and a third bending connecting rod. The third bending pressurizing cylinder is connected to the third bending slide, and the third bending slide is installed on the bottom surface of the substrate through a third bending slide guide rail. The third bending slider is installed on the substrate through a third bending slider guide rail. One end of the symmetrically arranged third bending connecting rod is respectively hinged to the third bending slide, and the other end of the third bending connecting rod is respectively connected to one end of the third bending swing arm, and the other end of the third bending swing arm is connected to the third bending slider. The third bending slider is connected to the bending movable part and drives the bending movable part to move toward or away from each other synchronously.

[0026] The above-mentioned automatic wire bending machine, wherein the fourth bending mechanism comprises:

[0027] A vertical frame, arranged on the fourth station, comprising a base and a column;

[0028] A fourth positioning mechanism is arranged on the upper surface of the base, comprising an end bending block and a fixing block, and a fourth groove is arranged on the fixing block;

[0029] An upper forming mechanism, comprising an upper bending pressure cylinder, an upper bending slide and an upper bending slider, wherein the upper bending pressure cylinder is mounted on the column, the upper bending slide is mounted on the column via an upper bending slide guide rail, the upper bending slider is mounted on the upper bending slide via an upper bending slider guide rail, and an end bending pressure block is provided at the bottom of the upper bending slide; and

[0030] The lower forming mechanism is arranged on the inclined surface of the base corresponding to the fourth positioning mechanism, and includes a lower bending pressure cylinder and a lower bending slide block. The lower bending pressure cylinder is connected to the lower bending slide block, and the lower bending slide block is installed on the base through a lower bending slide block guide rail.

[0031] The above-mentioned automatic metal wire bending machine, wherein the upper forming mechanism also includes an elastic adjustment mechanism, including an adjustment screw sleeve positioning block, an upper limit screw and an upper bending spring, the upper limit screw is installed in the adjustment screw sleeve positioning block through an upper spring adjustment screw sleeve and is connected to the top of the upper bending slide block, and the two ends of the upper bending spring respectively abut against the top surface of the upper bending slide block and the bottom end of the upper spring adjustment screw sleeve.

[0032] In order to better achieve the above-mentioned object, the present invention also provides a method for automatically bending a metal wire, which comprises the following steps:

[0033] S100, positioning a fixed-length metal wire on a first station of an automatic metal wire bending machine, and a first bending mechanism symmetrically bends the metal wire into a U-shaped metal wire;

[0034] S200, the stepping conveying mechanism conveys the U-shaped metal wire to the second station, and the second bending mechanism symmetrically bends the ends of the U-shaped metal wire into an outward-turned structure;

[0035] S300, the stepping conveying mechanism conveys the U-shaped metal wire with the end portion turned outward to the third station, and the third bending mechanism symmetrically bends the U-shaped metal wire inward to form a shape;

[0036] S400, the stepping transport mechanism transports the U-shaped metal wire formed by inward folding to the fourth station, and the fourth bending mechanism bends the U-shaped metal wire into a finished hanging ear; and

[0037] S500, the stepping transport mechanism transports the finished lifting lugs off the production line.

[0038] The technical effects of the present invention are:

[0039] The present invention can automatically realize the bending production of metal lifting ears. The automatic bending machine realizes the block structure of the structural mechanism, and the overall structure is simple and compact, which is convenient for operation, repair and maintenance. It can realize the automatic bending of metal wires of standard diameters, and can realize the automatic bending of metal wires made of aluminum, copper, iron and other metal materials as well as composite material wires.

[0040] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1A , 1B It is a structural schematic diagram of an embodiment of the present invention;

[0042] Figure 2 This is a diagram of an automated bending process according to an embodiment of the present invention;

[0043] Figure 3It is a schematic structural diagram of a first bending mechanism according to an embodiment of the present invention;

[0044] Figure 4 for Figure 3 A cross-sectional view of

[0045] Figure 5A , 5B It is a schematic diagram of the working process of the first bending mechanism;

[0046] Fig. 6A It is a schematic structural diagram of a second bending mechanism according to an embodiment of the present invention;

[0047] Figure 6B for Fig. 6A The other side structural diagram;

[0048] Fig. 7A , 7B It is a schematic diagram of the working process of the second bending mechanism;

[0049] Fig. 8A It is a schematic structural diagram of a third bending mechanism according to an embodiment of the present invention;

[0050] Figure 8B for Fig. 8A The other side structural diagram;

[0051] Fig.9A , 9B It is a schematic diagram of the working process of the third bending mechanism;

[0052] Fig.10 It is a schematic structural diagram of a fourth bending mechanism according to an embodiment of the present invention;

[0053] Fig.11 for Fig.10 A cross-sectional view of

[0054] Fig.12 for Fig.10 Another processing station cross-sectional view;

[0055] Fig.13A It is a schematic structural diagram of a step-by-step transport mechanism according to an embodiment of the present invention;

[0056] Fig. 13B for Fig.13A Top view of the .

[0057] Among them, the reference numerals

[0058] 1The first bending mechanism

[0059] 11 Framework Platform

[0060] 12First positioning mechanism

[0061] 121 dynamic forming block

[0062] 122 molding positioning block

[0063] 123 bending plate

[0064] 1231 Platen Slide Rail

[0065] 1232 Platen Beam

[0066] 124 Spring pressing piece

[0067] 13 Lifting mechanism

[0068] 131 Guide port

[0069] 132 Lifting beam

[0070] 133 Lifting cylinder

[0071] 14The first molding mechanism

[0072] 141 First bending pressure cylinder

[0073] 142 pressure swing arm

[0074] 143 swing arm intermediate shaft

[0075] 144 pressure bearing slider

[0076] 145 cylinder rod pin

[0077] 146 limit bolt

[0078] 147 Spring

[0079] 148 Spring adjustment rod

[0080] 149 Molding elastic block

[0081] 15First groove

[0082] 2. Second bending mechanism

[0083] 21 Install the base plate

[0084] 22 Second positioning mechanism

[0085] 221 positioning block

[0086] 222 bending fixed block

[0087] 223 bending moving block

[0088] 224 intermediate limit block

[0089] 23 Second molding mechanism

[0090] 231 Second bending pressure cylinder

[0091] 232 Second Bend Skateboard

[0092] 233 Second bending guide rail

[0093] 234 Second mobile bending base slider

[0094] 235 Second base slider pin

[0095] 236 Second Bend Skateboard Guide Rail

[0096] 237 Second bending connecting rod

[0097] 238 second limit screw

[0098] 24 Second groove

[0099] 3Third bending mechanism

[0100] 31 substrate

[0101] 32 Third positioning mechanism

[0102] 321 positioning piece

[0103] 322 bending fixture

[0104] 323 bending moving parts

[0105] 324 intermediate limiter

[0106] 33 The third molding mechanism

[0107] 331 The third bending pressure cylinder

[0108] 332 Third Bend Skateboard

[0109] 3321 Third Bend Skateboard Guide Rail

[0110] 333 Third bending slider

[0111] 3331 third bending slider guide rail

[0112] 3332 third bending slider adapter block

[0113] 334 third limit screw

[0114] 335 third bending connecting rod

[0115] 3351 third connecting pin

[0116] 336 Third Bend Swing Rod

[0117] 3361 Third fixed shaft

[0118] 3362 third bending slider pin

[0119] 337 third center limit slider

[0120] 34Third groove

[0121] 4Fourth bending mechanism

[0122] 41 vertical frame

[0123] 42 Fourth positioning mechanism

[0124] 421 end bending block

[0125] 422 fixed block

[0126] 43 Upper forming mechanism

[0127] 431 upper bending pressure cylinder

[0128] 432 upper bending skateboard

[0129] 4321 upper bending skateboard guide rail

[0130] 433 upper bending slider

[0131] 4331 upper bending slide rail

[0132] 434 end bending block

[0133] 435 upper limit screw

[0134] 436 upper spring adjustment screw sleeve

[0135] 437 Adjustment screw sleeve positioning block

[0136] 438 upper bending spring

[0137] 44 lower forming mechanism

[0138] 441 lower bending pressure cylinder

[0139] 442 lower bending slide

[0140] 443 lower bending slide rail

[0141] 45 Fourth groove

[0142] 5-step transport mechanism

[0143] 51 Main frame

[0144] 52 lifting mechanism

[0145] 521 lifting guide rail

[0146] 522 lifting slide

[0147] 523 lifting frame

[0148] 524 lifting limiter

[0149] 525 lifting cylinder

[0150] 53 Translation mechanism

[0151] 531 Translation Beam

[0152] 532 Translation stop

[0153] 533 Translation limiter

[0154] 534 Translation Cylinder

[0155] 535 Translation Guide

[0156] 536 Transverse Slider

[0157] 54 First Handling Grip

[0158] 55 Second handling gripper

[0159] 6 Metal Wire

[0160] 7 Lifting lugs

[0161] A First station

[0162] B Second station

[0163] C The third station

[0164] D Fourth station

[0165] E Move out of the workstation DETAILED DESCRIPTION

[0166] The structural principle and working principle of the present invention are described in detail below in conjunction with the accompanying drawings:

[0167] See also Figure 1A , Figure 1B , Figure 2 , Fig.13A and Fig. 13B , Figure 1A , 1BIt is a schematic diagram of the structure of different working states of an embodiment of the present invention. The metal wire automatic bending machine of the present invention is used to realize the automated production of metal lifting lugs 7 products, and the metal wire automatic bending machine includes: a stepping transport mechanism 5, including a main frame 51, a lifting mechanism 52 and a translation mechanism 53, the lifting mechanism 52 is installed on the main frame 51 and moves up and down along the main frame 51, the translation mechanism 53 is connected to the lifting mechanism 52, the translation mechanism 53 is horizontally switched between the first station A, the second station B, the third station C, the fourth station D and the removal station E respectively arranged in sequence relative to the main frame 51, the translation mechanism 53 is respectively provided with a first transport gripper 54 relative to the first station A, the second station B and the third station C, and a first transport gripper 54 is provided relative to the fourth station D. Two transport grippers 55; a first bending mechanism 1, arranged on the first station A, for symmetrically bending a fixed-length metal straight line into a U-shaped metal wire 6; a second bending mechanism 2, arranged on the second station B, for symmetrically bending the end of the U-shaped metal wire 6 transported by the stepping transport mechanism 5 to the second station B into an outward-turned structure; a third bending mechanism 3, arranged on the third station C, for symmetrically folding the U-shaped metal wire 6 with an outward-turned structure at the end transported by the stepping transport mechanism 5 to the third station C; and a fourth bending mechanism 4, arranged on the fourth station D, for bending the U-shaped metal wire 6 transported by the stepping transport mechanism 5 to the fourth station D and formed into a finished lifting ear 7.

[0168] See also Figure 2 , Figure 2 The automatic bending process diagram of an embodiment of the present invention is shown in FIG. The automatic bending method of the metal wire 6 of the present invention comprises the following steps:

[0169] Step S100, positioning a fixed-length metal wire on a first station A of an automatic metal wire bending machine, and a first bending mechanism 1 symmetrically bends the metal wire into a U-shaped metal wire 6;

[0170] Step S200: the stepping transport mechanism 5 transports the U-shaped metal wire 6 to the second station B, and the second bending mechanism 2 symmetrically bends the ends of the U-shaped metal wire 6 into an outward-turned structure;

[0171] Step S300: the stepping conveying mechanism 5 conveys the U-shaped metal wire 6 with the end portion being an outward-turned structure to the third station C, and the third bending mechanism 3 symmetrically folds the U-shaped metal wire 6 inwardly into a shape;

[0172] Step S400: the stepping transport mechanism 5 transports the U-shaped metal wire 6 formed by inward folding to the fourth station D, and the fourth bending mechanism 4 bends the U-shaped metal wire 6 into a finished lifting ear 7; and

[0173] Step S500: the stepping transport mechanism 5 transports the finished lifting lug 7 off the production line.

[0174] See also Figure 3-5B , Figure 3 is a structural schematic diagram of a first bending mechanism 1 according to an embodiment of the present invention, Figure 4 for Figure 3 A cross-sectional view of Figure 5A , 5B It is a schematic diagram of the working process of the first bending mechanism 1. In this embodiment, the first bending mechanism 1 includes: a frame platform 11, which is arranged at the first workstation A, and a guide groove is arranged on the table top of the frame platform 11; a lifting mechanism 13, including a lifting beam 132, a lifting cylinder 133 and a guide port 131, and the guide port 131 is installed on one side of the guide groove, and the lifting beam 132 is located below the table top of the frame platform 11 and is arranged opposite to the guide groove, and the lifting cylinder 133 is installed on the frame platform 11 and connected to the lifting beam 132; a first positioning mechanism 12, including a forming positioning block 122, a dynamic forming block 121 and a bending pressure plate 123, and the forming positioning block 122 is installed on the table top of the frame platform 11 and is located on one side of the guide groove, and the frame platform 11 is opposite to the guide groove. A first groove 15 should be provided on the forming positioning block 122 to reserve space for the gripper to grasp and place; the bending platen 123 is installed on the table top of the frame platform 11 through a platen slide rail 1231 and is located on the other side of the guide groove; the dynamic forming block 121 is symmetrically arranged corresponding to the forming positioning block 122 and is hinged to the bending platen 123, and the dynamic forming block 121 has a forming surface adapted to the forming positioning block 122; and a first forming mechanism 14, including a first bending pressurizing cylinder 141 and a pressure swing arm 142, the first bending pressurizing cylinder 141 is installed on the frame platform 11 and connected to the pressure swing arm 142, and the pressure swing arm 142 is connected to the bending platen 123 through a platen crossbeam 1232.

[0175] The bending plate 123 is also provided with an elastic driving member, including a forming elastic pressing block 149, a spring adjusting rod 148 and a spring 147. The spring adjusting rod 148 is installed on the bending plate 123. The front end of the forming elastic pressing block 149 abuts against the rear end of the dynamic forming block 121. The two ends of the spring 147 abut against the rear ends of the spring adjusting rod 148 and the forming elastic pressing block 149. A limit bolt 146 is also provided below the frame platform 11 corresponding to the pressure swing arm 142.

[0176] The fixed-length conveying equipment conveys the metal wire 6 that has been cut and straightened to a fixed length through the guide port 131 to the top of the lifting beam 132. The lifting beam 132 is lifted by the lifting cylinder 133 to be flush with the upper surface of the frame platform 11. The spring pressure plates 124 at both ends have a slight elastic force to press the metal wire 6 to keep it stable and motionless; the cylinder rod of the first bending pressure cylinder 141 extends out, and the cylinder rod pin 145 drives the pressure swing arm 142 to swing along the swing arm intermediate shaft 143. The pressure swing arm The inner surface of the pressure-bearing slide block 144 above 142 pushes the pressure plate crossbeam 1232, driving the bending pressure plate 123 to move forward along the pressure plate slide rail 1231; the front ends of the two symmetrically arranged dynamic forming blocks 121 first contact the fixed-length metal straight line, and under the reaction force of the forming positioning block 122, the metal straight line begins to be bent, and finally the inner arc surfaces of the two dynamic forming blocks 121 completely wrap the outer arc surfaces of the forming positioning block 122, and the fixed-length metal straight line is symmetrically bent into a U-shaped metal wire 6.

[0177] Under the action of the spring 147, the front end of the forming elastic pressing block 149 always presses against the rear end surfaces of the two dynamic forming blocks 121 to prevent the bottom of the symmetrically bent U-shaped metal wire 6 from being deformed in the bending process to ensure the quality of the bending. The elastic force of the spring 147 can be adjusted by the spring adjustment rod 148. After the lifting cylinder 133 and the first bending pressure cylinder 141 return to their original positions, the first handling claw 54 on the stepping handling mechanism 5 can take the workpiece symmetrically bent into the U-shaped metal wire 6 from the first groove 15 and put it into the second bending mechanism 2 for the next bending step.

[0178] See also Figures 6A-7B , Fig. 6A is a schematic structural diagram of a second bending mechanism 2 according to an embodiment of the present invention, Figure 6B for Fig. 6A The other side of the structure diagram, Fig. 7A , 7BIt is a schematic diagram of the working process of the second bending mechanism 2. The second bending mechanism 2 includes: a mounting base plate 21, which is arranged on the second workstation B; a second positioning mechanism 22, including a positioning block 221, a bending fixed block 222, a bending movable block 223 and an intermediate limit block 224, wherein the positioning block 221 is arranged on the mounting base plate 21, the intermediate limit block 224 is arranged corresponding to the positioning block 221, the bending fixed block 222 is symmetrically arranged on both sides of the intermediate limit block 224, the bending movable block 223 is symmetrically arranged on one end of the intermediate limit block 224 corresponding to the bending fixed block 222, and the bending movable block 223 and the bending fixed block 222 are respectively provided with mutually adapted processing surfaces; a second groove 24 is arranged on the mounting base plate 21 corresponding to the positioning block 221, and a space is reserved for the gripper to place; and a second forming mechanism 23, including a second bending pressurizing cylinder 231, The second bending slide 232, the second bending guide rail 233, the second movable bending base slider 234, the second bending slide guide rail 236 and the second bending connecting rod 237, the second bending pressure cylinder 231 is connected to the second bending slide 232, the second bending slide 232 is installed on the bottom surface of the mounting base 21 through the second bending slide guide rail 236, one end of the symmetrically arranged second bending connecting rod 237 is respectively hinged to the second bending slide 232, the other end of the second bending connecting rod 237 is respectively connected to the second movable bending base slider 234, the second movable bending base slider 234 is installed on the bottom surface of the mounting base 21 through the second bending guide rail 233, the second movable bending base slider 234 is respectively connected to the bending moving block 223, and drives the bending moving block 223 to move synchronously toward or away from each other.

[0179] After the first bending mechanism 1 grabs the bent workpiece and is brought to the second bending mechanism 2 by the first handling claw 54, it is positioned at the positioning block 221, and the second bending pressure cylinder 231 starts to act, the cylinder rod extends, and drives the second bending slide 232 to move along the second bending slide guide rail 236, and the pin shaft at the front end of the second bending slide 232 is connected to the two symmetrical second bending connecting rods 237, and the second bending connecting rod 237 is connected to the second movable bending base slider 234 through the second base slider pin shaft 235, thereby driving the second movable bending base slider 234 to move to both sides along the second bending guide rail 233, and moving the second movable bending base slider 234 to the other side. Equipped with a bending moving block 223, the two bending moving blocks 223 move symmetrically to both sides, and the end of the workpiece symmetrically bent into a U-shaped metal wire 6 begins to be bent. Due to the limiting effect of the two symmetrically arranged bending fixed blocks 222 and the anti-deformation effect of the middle limiting block 224 on the metal wire 6, the inclined end faces of the two symmetrically arranged bending moving blocks 223 are finally pressed into place with the bending fixed block 222, and the workpiece is bent into a symmetrical outward-turned structure at the end; the second limiting screw 238 plays the role of moving limiting; then the second bending pressure cylinder 231 drives the mechanism back to its original position, and the first carrying claw 54 grabs it away at the position of the second groove 24 and places it on the third bending mechanism 3 for the next step of bending.

[0180] See also Figures 8A-9B , Fig. 8A Schematic diagram of the structure of the third bending mechanism 3 according to an embodiment of the present invention. Figure 8B for Fig. 8A The other side of the structure diagram, Fig.9A , 9BThe third bending mechanism 3 is a schematic diagram of the working process. The third bending mechanism 3 of this embodiment includes: a substrate 31, which is arranged on the third workstation C; a third positioning mechanism 32, which is installed on the substrate 31, including a positioning member 321, a bending fixing member 322, a bending movable member 323 and an intermediate limiting member 324, wherein the positioning member 321 is arranged on the substrate 31, and the intermediate limiting member 324 is arranged corresponding to the positioning member 321, the bending fixing member 322 is symmetrically arranged on both sides of the intermediate limiting member 324, and the bending movable member 323 is symmetrically arranged on both sides of the intermediate limiting member 324 corresponding to the bending fixing member 322, and the bending movable member 323 and the intermediate limiting member 324 are respectively provided with mutually matching processing surfaces; a third groove 34 is arranged on the substrate 31 corresponding to the positioning member 321 to reserve space for the gripper to grasp and place; and a third forming mechanism 33, including a third bending member 321, a bending fixing member 322, a bending movable member 323, and an intermediate limiting member 324. A pressurizing cylinder 331, a third bending slide 332, a third bending slider 333, a third bending swing rod 336, and a third bending connecting rod 335. The third bending pressurizing cylinder 331 is connected to the third bending slide 332. The third bending slide 332 is installed on the bottom surface of the substrate 31 through a third bending slide guide rail 3321. The third bending slider 333 is installed on the substrate 31 through a third bending slider guide rail 3331. One end of the symmetrically arranged third bending connecting rod 335 is respectively hinged to the third bending slide 332, and the other end of the third bending connecting rod 335 is respectively connected to one end of the third bending swing rod 336, and the other end of the third bending swing rod 336 is connected to the third bending slider 333. The third bending slider 333 is connected to the bending movable member 323, and drives the bending movable member 323 to move synchronously toward or away from each other. A third centering limiting sliding block 337 is also provided corresponding to the third bending sliding block 332 .

[0181] After the second bending mechanism 2 grabs the bent workpiece to the third bending mechanism 3 by the first transport claw 54, it is positioned at the positioning piece 321, and the third bending pressure cylinder 331 starts to move, the cylinder rod extends, and drives the third bending slide plate 332 to move along the third bending slide plate guide rail 3321, the pin shaft at the front end of the third bending slide plate 332 is connected to the two symmetrical third bending connecting rods 335, and the third bending connecting rod 335 is connected to the third bending swing rod 336 through the third connecting pin shaft 3351, and the third bending swing rod 336 swings along the third fixed rotation axis 3361, and the third bending swing rod 336 drives the third bending slider adapter block 3332 to move, and the third bending slider adapter block 3332 is connected to the third bending slider through the third bending slider pin shaft 3362. The second folding block 333 is connected to the third folding block 333, thereby driving the third bending slider 333 to move toward each other along the third bending slider guide rail 3331. A bending movable member 323 is installed on the other side of the third bending slider 333. The two bending movable members 323 move toward each other symmetrically, and the workpiece begins to be bent. Due to the anti-deformation effect of the two symmetrically arranged bending fixing members 322 on the metal wire 6 and the limiting effect of the intermediate limiting member 324, the inclined end surface of the bending movable member 323 and the intermediate limiting member 324 are finally pressed into place, and the workpiece is symmetrically folded inwardly; the third limiting screw 334 plays the role of moving and limiting; thereafter, the third bending pressurizing cylinder 331 drives the mechanism back to its original position, and the first handling claw 54 grabs it away at the position of the third groove 34 and places it on the fourth bending mechanism 4 for the next step of bending.

[0182] See also Figure 10-12 , Fig.10 is a schematic structural diagram of a fourth bending mechanism 4 according to an embodiment of the present invention, Fig.11 for Fig.10 A cross-sectional view of Fig.12 for Fig.10Another processing section view of the workstation. In this embodiment, the fourth bending mechanism 4 includes: a vertical frame 41, which is arranged on the fourth workstation D and includes a base and a column; a fourth positioning mechanism 42, which is arranged on the upper surface of the base and includes an end bending block 421 and a fixed block 422, and the fixed block 422 is provided with a fourth groove 45 to reserve space for the gripper to place; an upper forming mechanism 43, including an upper bending pressure cylinder 431, an upper bending slide 432 and an upper bending slide 433, the upper bending pressure cylinder 431 is installed on the column, and the upper bending slide 432 is guided by the upper bending slide The rail 4321 is installed on the column, the upper bending slider 433 is installed on the upper bending slide plate 432 through the upper bending slider guide rail 4331, and the bottom of the upper bending slide plate 432 is provided with an end bending pressure block 434; and the lower forming mechanism 44 is arranged on the inclined surface of the base corresponding to the fourth positioning mechanism 42, including a lower bending pressure cylinder 441 and a lower bending slider 442, the lower bending pressure cylinder 441 is connected to the lower bending slider 442, and the lower bending slider 442 is installed on the base through the lower bending slider guide rail 443.

[0183] Among them, the upper forming mechanism 43 also includes an elastic adjustment mechanism, including an adjustment screw sleeve positioning block 437, an upper limit screw 435 and an upper bending spring 438. The upper limit screw 435 is installed in the adjustment screw sleeve positioning block 437 through an upper spring adjustment screw sleeve 436 and is connected to the top of the upper bending slide 433. The two ends of the upper bending spring 438 are respectively abutted against the top surface of the upper bending slide 433 and the bottom end of the upper spring adjustment screw sleeve 436.

[0184] After the workpiece bent by the third bending mechanism 3 is grabbed by the first transport claw 54 to the fourth bending mechanism 4, the claw moves to the fourth groove 45 to place it in place, and the upper bending pressure cylinder 431 starts to act, the cylinder rod extends, driving the upper bending slide 432 to move downward along the upper bending slide guide rail 4321, the upper bending slide 433 first contacts the workpiece, and the upper bending slide 432 continues to move downward, the upper bending spring 438 contracts to exert pressure on the upper bending slide 433, the pressure of the upper bending spring 438 can also be adjusted by the upper spring adjusting screw sleeve 436, and the upper limit screw 435 exerts pressure on the upper bending spring 438 The upper bending slide plate 432 continues to move downward, causing the end bending pressure block 434 to start contacting the workpiece, and the end bending is completed under the joint clamping of the end bending block 421 and the fixed block 422; the lower bending pressure cylinder 441 starts to move, and the lower bending slider 442 moves obliquely upward along the lower bending slider guide rail 443. After the lower bending slider 442 contacts the workpiece, it works together with the upper bending slider 433 to complete the upright bending of the front end of the workpiece; the upper bending pressure cylinder 431 and the lower bending pressure cylinder 441 return to their original positions, and the second handling claw 55 grabs it away at the position of the fourth groove 45 and moves it out of the bending machine offline.

[0185] See also Fig.13A , 13B , Fig.13A This is a schematic structural diagram of a step-by-step transport mechanism 5 according to an embodiment of the present invention. Fig. 13B for Fig.13AThe lifting mechanism 52 of this embodiment includes a lifting frame 523, a lifting cylinder 525, a lifting guide rail 521, a lifting slider 522 and a lifting limiter 524. The lifting guide rail 521 is installed on the main frame 51. The lifting frame 523 is connected to the lifting guide rail 521 through the lifting slider 522. The lifting cylinder 525 is installed at the bottom of the main frame 51 and connected to the lifting frame 523 to drive the lifting frame 523 to move up and down relative to the main frame 51. The lifting limiter 524 is installed on the main frame 51 corresponding to the bottom end of the lifting guide rail 521 to ensure that the descending height of the lifting frame 523 is adapted to the height of the grabbing position of the workpiece. Among them, the translation mechanism 53 includes: a translation cylinder 534, a translation beam 531, a translation guide rail 535, a transverse slider 536, a translation stopper 532 and a translation limiter 533. The translation beam 531 is installed on the translation guide rail 535, the translation guide rail 535 is connected to the transverse slider 536, and the transverse slider 536 is installed on the front panel of the lifting frame 523. The translation cylinder 534 is connected to the translation beam 531 and drives the translation beam 531 to move back and forth horizontally. The translation stopper 532 is installed at the lower end of the translation beam 531 and cooperates with the translation limiter 533 to ensure the stepping distance of the translation. The front side of the translation beam 531 is respectively equipped with the first carrying gripper 54 corresponding to the first workstation A, the second workstation B and the third workstation C, and the second carrying gripper 55 is installed corresponding to the fourth workstation D.

[0186] The stepping conveying mechanism 5 is used to convey the bent workpieces from the first to the fourth workstations D, and realize the stepping conveying of the workpieces, and finally realize the bending and conveying automation of the whole machine; a lifting cylinder 525 is installed under the main frame 51, which can lift the lifting frame 523 to realize its lifting, and the two lifting limit members 524 can ensure that its descending height meets the height of the gripping position of the gripper for the workpiece; the lifting guide rail 521 and the lifting slider 522 ensure the stability of the lifting path.

[0187] The front panel of the lifting frame 523 is installed with a transverse sliding slider 536, which is assembled with a translation guide rail 535. The translation beam 531 is installed on the translation guide rail 535. The extension and retraction of the translation cylinder 534 rod can realize the reciprocating horizontal movement of the translation beam 531; the lower end of the beam is installed with a translation stop block 532, which contacts the translation limit pieces 533 at both ends during the reciprocating movement to ensure the stepping distance of the translation; four sets of carrying claws are installed at the front end of the translation beam 531, which correspond to the four bending mechanisms one by one.

[0188] The lifting frame 523 of the initial forward handling mechanism 5 stops at the lifting limit piece 524, and the first handling claws 54 and the second handling claws 55 on the upper parts of the four bending mechanisms are synchronously in the low position, the claws are open, and the claws are closed to grab the workpiece after the automatic bending of each station is completed, the cylinder rod of the lifting cylinder 525 is lifted, the lifting frame 523 is lifted, and the first handling claws 54 and the second handling claws 55 at the front end of the translation beam 531 respectively lift the workpiece, the translation cylinder 534 is actuated, the cylinder rod is extended, and the translation beam 531 is horizontally moved to the right by a station distance, that is, the first, second, third, and fourth stations. The workpieces are moved one station at the same time, then the lifting cylinder 525 falls, and the workpieces of the first, second, third and fourth bending mechanisms are placed on the second, third and fourth mechanisms and the moving-out station E respectively, the first carrying claw 54 and the second carrying claw 55 are released, the cylinder rod of the lifting cylinder 525 is lifted again, the empty carrying claw is lifted, the cylinder rod of the translation cylinder 534 is retracted, the translation beam 531 returns to its original position, the cylinder rod of the lifting cylinder 525 falls again, the first carrying claw 54 and the second carrying claw 55 return to their original position, and the stepping conveying mechanism 5 completes a stepping conveying cycle, and the next conveying process is carried out as described above.

[0189] The front end of the metal wire automatic bending machine is used in conjunction with the metal wire fixed-length conveying device, that is, the fixed-length conveying device conveys the metal wire 6 that has been cut and straightened to the metal wire automatic bending machine for automatic bending; the rear end can be used in conjunction with the automatic manipulator, that is, after the bent and formed lifting lug 7 is conveyed and placed by the stepping conveying mechanism 5, the manipulator can automatically take it away. Through automated actions, the automatic bending process from the fixed-length metal straight line to the finished lifting lug 7 is completed, and finally the bending is formed into a qualified metal lifting lug 7 product.

[0190] The present invention can automatically realize the bending production of the metal lifting ear 7. The automatic bending machine realizes the block structure of the structural mechanism, and the overall structure is simple and compact, which is convenient for operation, repair and maintenance. It can realize the automatic bending of metal wires of standard diameters, and can realize the automatic bending of metal wires made of metal materials such as aluminum, copper, iron, and composite materials.

[0191] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A metal wire automatic bending machine, characterized in that: include: A step-by-step transport mechanism, comprising a main frame, a lifting mechanism and a translation mechanism, wherein the lifting mechanism is mounted on the main frame and moves up and down along the main frame, the translation mechanism is connected to the lifting mechanism, and the translation mechanism horizontally switches between a first station, a second station, a third station, a fourth station and a moving-out station arranged in sequence relative to the main frame, and the translation mechanism is provided with a first transport gripper relative to the first station, the second station and the third station, respectively, and a second transport gripper relative to the fourth station; A first bending mechanism, disposed on the first station, for symmetrically bending a fixed-length metal line into a U-shaped metal line; A second bending mechanism, disposed on the second station, for symmetrically bending the end of the U-shaped metal wire transported to the second station by the stepping transport mechanism into an outward-turned structure; A third bending mechanism is disposed on the third station and is used to symmetrically fold the U-shaped metal wire whose end portion is an outward-turned structure and is transported by the stepping transport mechanism to the third station into an inward-turned structure; as well as The fourth bending mechanism is arranged on the fourth station and is used to bend the U-shaped metal wire that is inwardly folded and transported to the fourth station by the stepping transport mechanism into a finished hanging ear product.

2. The automatic wire bending machine according to claim 1, characterized in that: The lifting mechanism includes a lifting frame, a lifting cylinder, a lifting guide rail, a lifting slider and a lifting limit piece. The lifting guide rail is installed on the main frame, and the lifting frame is connected to the lifting guide rail through the lifting slider. The lifting cylinder is installed at the bottom of the main frame and connected to the lifting frame to drive the lifting frame to move up and down relative to the main frame; the lifting limit piece is installed on the main frame corresponding to the bottom end of the lifting guide rail to ensure that the descending height of the lifting frame is adapted to the grabbing position height of the workpiece.

3. The automatic wire bending machine according to claim 2, characterized in that: The translation mechanism includes: a translation cylinder, a translation beam, a translation guide rail, a transverse sliding block, a translation stopper and a translation limiter. The translation beam is installed on the translation guide rail, the translation guide rail is connected to the transverse sliding block, and the transverse sliding block is installed on the front panel of the lifting frame. The translation cylinder is connected to the translation beam and drives the translation beam to move back and forth horizontally. The translation stopper is installed at the lower end of the translation beam and cooperates with the translation limiter to ensure the stepping distance of the translation. The front side of the translation beam is respectively equipped with the first carrying gripper corresponding to the first station, the second station and the third station, and the second carrying gripper is installed corresponding to the fourth station.

4. The automatic wire bending machine according to claim 1, 2 or 3, characterized in that: The first bending mechanism comprises: A frame platform is arranged at the first work station, and a guide groove is arranged on the table surface of the frame platform; A lifting mechanism, comprising a lifting beam, a lifting cylinder and a guide port, wherein the guide port is installed on one side of the guide groove, the lifting beam is located below the table top of the frame platform and is arranged opposite to the guide groove, and the lifting cylinder is installed on the frame platform and connected to the lifting beam; The first positioning mechanism comprises a forming positioning block, a dynamic forming block and a bending pressing plate, wherein the forming positioning block is mounted on the table top of the frame platform and is located on one side of the guide groove, and a first groove is provided corresponding to the forming positioning block; the bending pressing plate is mounted on the table top of the frame platform through a pressing plate slide rail and is located on the other side of the guide groove; the dynamic forming block is symmetrically arranged corresponding to the forming positioning block and is hinged to the bending pressing plate, and the dynamic forming block has a forming surface adapted to the forming positioning block; and The first forming mechanism includes a first bending pressurizing cylinder and a pressure swing arm. The first bending pressurizing cylinder is installed on the frame platform and connected to the pressure swing arm. The pressure swing arm is connected to the bending pressure plate through a pressure plate cross beam.

5. The automatic wire bending machine according to claim 4, characterized in that: The bending pressure plate is also provided with an elastic driving part, including a molded elastic pressure block, a spring adjustment rod and a spring. The spring adjustment rod is installed on the bending pressure plate, the front end of the molded elastic pressure block abuts against the rear end of the dynamic molding block, and the two ends of the spring respectively abut against the spring adjustment rod and the rear end of the molded elastic pressure block.

6. The automatic wire bending machine according to claim 1, 2 or 3, characterized in that: The second bending mechanism comprises: An installation substrate is arranged on the second station; The second positioning mechanism comprises a positioning block, a bending fixed block, a bending movable block and an intermediate limiting block, wherein the positioning block is arranged on the mounting base plate, the intermediate limiting block is arranged corresponding to the positioning block, the bending fixed blocks are symmetrically arranged on both sides of the intermediate limiting block, the bending movable block is symmetrically arranged at one end of the intermediate limiting block corresponding to the bending fixed block, and the bending movable block and the bending fixed block are respectively provided with mutually adapted processing surfaces; a second groove is arranged on the mounting base plate corresponding to the positioning block; and The second forming mechanism includes a second bending pressure cylinder, a second bending slide, a second bending guide rail, a second movable bending base slider, a second bending slide guide rail and a second bending connecting rod. The second bending pressure cylinder is connected to the second bending slide, and the second bending slide is installed on the bottom surface of the mounting base through the second bending slide guide rail. One end of the symmetrically arranged second bending connecting rod is respectively hinged to the second bending slide, and the other end of the second bending connecting rod is respectively connected to the second movable bending base slider. The second movable bending base slider is installed on the bottom surface of the mounting base through the second bending guide rail. The second movable bending base slider is respectively connected to the bending moving block, and drives the bending moving block to move synchronously toward or away from each other.

7. The automatic wire bending machine according to claim 1, 2 or 3, characterized in that: The third bending mechanism comprises: A substrate is arranged on the third station; A third positioning mechanism is installed on the substrate, comprising a positioning member, a bending fixed member, a bending movable member and an intermediate limiting member, wherein the positioning member is arranged on the substrate, the intermediate limiting member is arranged corresponding to the positioning member, the bending fixed member is symmetrically arranged on both sides of the intermediate limiting member, the bending movable member is symmetrically arranged on both sides of the intermediate limiting member corresponding to the bending fixed member, and the bending movable member and the intermediate limiting member are respectively provided with mutually adapted processing surfaces; a third groove is arranged on the substrate corresponding to the positioning member; and The third forming mechanism includes a third bending pressurizing cylinder, a third bending slide, a third bending slider, a third bending swing arm, and a third bending connecting rod. The third bending pressurizing cylinder is connected to the third bending slide, and the third bending slide is installed on the bottom surface of the substrate through a third bending slide guide rail. The third bending slider is installed on the substrate through a third bending slider guide rail. One end of the symmetrically arranged third bending connecting rod is respectively hinged to the third bending slide, and the other end of the third bending connecting rod is respectively connected to one end of the third bending swing arm, and the other end of the third bending swing arm is connected to the third bending slider. The third bending slider is connected to the bending movable part and drives the bending movable part to move toward or away from each other synchronously.

8. The automatic wire bending machine according to claim 1, 2 or 3, characterized in that: The fourth bending mechanism comprises: A vertical frame, arranged on the fourth station, comprising a base and a column; A fourth positioning mechanism is arranged on the upper surface of the base, comprising an end bending block and a fixing block, and a fourth groove is arranged on the fixing block; An upper forming mechanism, comprising an upper bending pressure cylinder, an upper bending slide and an upper bending slider, wherein the upper bending pressure cylinder is mounted on the column, the upper bending slide is mounted on the column via an upper bending slide guide rail, the upper bending slider is mounted on the upper bending slide via an upper bending slider guide rail, and an end bending pressure block is provided at the bottom of the upper bending slide; and The lower forming mechanism is arranged on the inclined surface of the base corresponding to the fourth positioning mechanism, and includes a lower bending pressure cylinder and a lower bending slide block. The lower bending pressure cylinder is connected to the lower bending slide block, and the lower bending slide block is installed on the base through a lower bending slide block guide rail.

9. The automatic wire bending machine according to claim 8, characterized in that: The upper forming mechanism also includes an elastic adjustment mechanism, including an adjustment screw sleeve positioning block, an upper limit screw and an upper bending spring. The upper limit screw is installed in the adjustment screw sleeve positioning block through an upper spring adjustment screw sleeve and is connected to the top of the upper bending slide block. The two ends of the upper bending spring respectively abut against the top surface of the upper bending slide block and the bottom end of the upper spring adjustment screw sleeve.

10. A method for automatically bending a metal wire, characterized in that: The steps include: S100, positioning a fixed-length metal wire on a first station of an automatic metal wire bending machine, and a first bending mechanism symmetrically bends the metal wire into a U-shaped metal wire; S200, the stepping conveying mechanism conveys the U-shaped metal wire to the second station, and the second bending mechanism symmetrically bends the ends of the U-shaped metal wire into an outward-turned structure; S300, the stepping conveying mechanism conveys the U-shaped metal wire with the end portion turned outward to the third station, and the third bending mechanism symmetrically bends the U-shaped metal wire inward to form a shape; S400, the stepping transport mechanism transports the U-shaped metal wire formed by inward folding to the fourth station, and the fourth bending mechanism bends the U-shaped metal wire into a finished hanging ear; and S500, the stepping transport mechanism transports the finished lifting lugs off the production line.

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