CN115415430A

CN115415430A - Sheet metal part automatic production system and production process

Info

Publication number: CN115415430A
Application number: CN202211194013.8A
Authority: CN
Inventors: 孙小刚; 常平; 朱孝国
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2022-12-02

Abstract

The invention relates to the technical field of automatic sheet metal production, in particular to an automatic sheet metal part production system and a production process, which comprise a steel plate buffer feeding device, a first numerical control punch press, a first transfer conveying device, a second punch press, a second transfer conveying device, a third hydraulic punch press and a finished product collecting device which are sequentially arranged; the steel plate cache feeding device comprises a cache mechanism, a feeding mechanism and a carrying mechanism; one side of the buffer mechanism is provided with a feeding mechanism, and the output end of the feeding mechanism is connected with the first numerical control punch; the buffer mechanism is connected with the feeding mechanism through a carrying mechanism, and the carrying mechanism is positioned above the buffer mechanism and the feeding mechanism. According to the invention, the buffer component is arranged to accommodate the metal plate with larger length, the metal plate is conveyed into the feeding mechanism through the conveying mechanism, and then the metal plate is conveyed into the first numerical control punch press step by step through the feeding mechanism, so that the first numerical control punch press gradually punches the metal plate, and the feeding of the metal plate with larger length is realized.

Description

Sheet metal part automatic production system and production process

Technical Field

The invention relates to the technical field of automatic sheet metal production, in particular to an automatic sheet metal part production system and a production process.

Background

The sheet metal process is a comprehensive cold working process for sheet metal (generally below 6 mm), and comprises shearing, punching/cutting/compounding, folding, riveting, splicing, forming (such as automobile bodies) and the like. Sheet metal processing generally includes basic equipment including a plate shearing Machine (shearlmachine), a numerical control press (CNC Punching Machine)/laser, plasma, a water jet Cutting Machine (Cutting Machine), a Bending Machine (Bending Machine), a drilling Machine, and various auxiliary equipment such as: uncoilers, levelers, deburring machines, spot welding machines, and the like. The metal plate has the characteristics of light weight, high strength, conductivity (capable of being used for electromagnetic shielding), low cost, good large-scale mass production performance and the like, and is widely applied to the fields of electronic appliances, communication, automobile industry, medical appliances and the like, for example, in computer cases, mobile phones and MP3, the metal plate is an essential component.

At present, in a sheet metal process, feeding and discharging are carried out in a manual mode, and at the moment, a plurality of people are required to operate in a matching mode, so that time and labor are wasted, misoperation is easy to occur, and the product quality is influenced.

The existing sheet metal production process, for example, the chinese invention patent (publication No. CN110369587A, published No. 20191025) discloses an automatic sheet metal stamping production line and a production process thereof, comprising: the feeding assembly is used for storing and lifting the sheet metal part to be stamped; the connecting rod type moving manipulator assembly is used for grabbing sheet metal parts to be punched in the feeding assembly and transferring the sheet metal parts to a punch; a horizontal overturning assembly; carrying out 180-degree horizontal overturning on the sheet metal part to be subjected to stamping processing to realize double-sided stamping processing; punching; stamping a sheet metal part to be stamped of the connecting rod type mobile manipulator assembly; a blanking conveyor; the connecting rod type moving manipulator component conveys the sheet metal parts punched by the punch press to a blanking conveyor. The automatic production line for stamping and forming the sheet metal and the production process thereof have the advantages of high machining efficiency, good machining effect and good machining consistency.

However, the above production line has the following problems: when the length of the sheet metal part that needs to process is great, when the length of a sheet metal part can carry out a lot of punching presses promptly, foretell material loading subassembly and connecting rod formula remove manipulator subassembly and can't carry out effectual transport, are difficult to realize automated production.

Disclosure of Invention

In order to solve the above problems, a first object of the present invention is to provide an automatic sheet metal part production system, which can feed sheet metals with large lengths, realize automatic production, and improve production efficiency.

For the first purpose of the invention, the following technical scheme is adopted for implementation:

an automatic sheet metal part production system comprises a steel plate cache feeding device, a first numerical control punch press, a first transfer conveying device, a second punch press, a second transfer conveying device, a third hydraulic punch press and a finished product collecting device which are sequentially arranged; the steel plate buffer feeding device is used for conveying a whole sheet metal to the first numerical control punch; the first numerical control punch is used for cutting the steel plate to form a blanking product; the first transfer conveying device is used for conveying the blanking products to one side of the second punch; the second punch is used for carrying out secondary cutting on the blanking product to form a lug folding product; the second transfer conveying device is used for conveying the ear folding products to one side of the third hydraulic punching machine; the third hydraulic press is used for pressing the lug folding product to form a finished product, and the finished product is in the shape of a hollow cuboid with the top surface removed;

the steel plate cache feeding device comprises a cache mechanism, a feeding mechanism and a carrying mechanism; one side of the cache mechanism is provided with a feeding mechanism, and the output end of the feeding mechanism is connected with the first numerical control punch; the buffer mechanism is connected with the feeding mechanism through a carrying mechanism, and the carrying mechanism is positioned above the buffer mechanism and the feeding mechanism.

Preferably, the buffer mechanism comprises a buffer bottom plate and side limiting rods, the buffer bottom plate is transversely arranged, and the side limiting rods are arranged around the buffer bottom plate, so that a buffer space is formed above the buffer bottom plate;

the feeding mechanism comprises a feeding frame, a feeding rail, a feeding clamping jaw cylinder, a feeding sliding table and a sliding table driving part, wherein the feeding rail, the feeding clamping jaw cylinder, the feeding sliding table and the sliding table driving part are arranged on the feeding frame; the feeding track is positioned on one side of the cache bottom plate, and the output end of the feeding track is connected to the first numerical control punching machine; the side of the feeding rail, which is far away from the output end, is provided with a feeding clamping jaw, and the feeding clamping jaw is used for clamping the end part of a sheet metal plate during feeding; the feeding clamping jaw is connected with a feeding clamping jaw cylinder, the feeding clamping jaw cylinder is arranged on a feeding sliding table, the feeding sliding table is arranged on the feeding frame in a sliding mode, and the sliding direction of the feeding sliding table is consistent with the conveying direction of the feeding track; the feeding sliding table is connected with a sliding table driving part to drive the feeding sliding table to slide;

the conveying mechanism comprises a conveying bracket, a transverse conveying component, a longitudinal conveying component, a sucker mounting rack and a conveying sucker; the conveying support is erected above the buffer mechanism and the feeding mechanism, the conveying support is provided with a transverse moving component and a longitudinal moving component which are connected with each other, the lower part of the longitudinal moving component is provided with a sucker mounting rack, and the lower part of the sucker mounting rack is provided with a conveying sucker.

Preferably, the bottom of the buffer memory bottom plate is provided with a lifter and a lifting guide rod; the side limiting rods comprise a left limiting rod, a right limiting rod, a front limiting rod and a rear limiting rod, the bottoms of the left limiting rod and the right limiting rod are respectively provided with a left adjusting part and a right adjusting part, and the left adjusting part and the right adjusting part are used for adjusting the positions of the left limiting rod and the right limiting rod along the left-right direction; the bottom of the front and rear limiting rods is provided with a front and rear adjusting part which is used for adjusting the distance between the front and rear limiting rods;

the top of side gag lever post is provided with the fender material piece towards that side in buffer memory space, and the lower part of keeping off the material piece rotates and sets up on the side gag lever post, keeps off that side that the material piece deviates from the buffer memory space and sets up the spring.

Preferably, a plurality of rollers are arranged on the feeding track;

the sliding table driving part comprises a sliding table motor, a belt pulley, a belt clamp and a bearing; the sliding table motor is longitudinally arranged on the feeding sliding table, the output end of the sliding table motor is provided with a belt pulley, the belt pulley is matched with a belt, belt clamps are fixedly arranged at two ends of the belt, and the belt clamps are positioned at two ends of the feeding frame; bearings are arranged on two sides of the belt pulley, and the belt is connected to the bearings.

Preferably, the lateral moving member includes a laterally arranged cylinder, and the longitudinal moving member includes a longitudinally arranged cylinder.

Preferably, the feeding mechanism is also provided with a feeding guide mechanism, and the feeding guide mechanism comprises a feeding guide rail, a side guide wheel, a guide slide rail and a feeding guide rail adjusting part; the outer side of the feeding track is respectively provided with a feeding guide track, and the side of the feeding guide track facing the feeding track is provided with a plurality of side guide wheels which are arranged side by side; the bottom of the feeding guide rail is arranged on the guide slide rail in a sliding manner, and the direction of the guide slide rail is vertical to the conveying direction of the feeding rail; the feeding guide rail is connected with a feeding guide rail adjusting part, and the feeding guide rail adjusting part adjusts the distance between the two feeding guide rails.

Preferably, a waste material coiling device is arranged on the discharge side of the first numerical control punch, and the steel plate cache feeding device, the first numerical control punch and the waste material coiling device are arranged on the same straight line; the waste material rolling device comprises a rolling bottom plate, a driving roller, a driven roller and a driving roller driving part; one end of the coil stock bottom plate is connected to the first numerical control punching machine, the other end of the coil stock bottom plate is provided with a driving roller, a driven roller is arranged above or below the driving roller, and one end of the driving roller is connected with a driving roller driving part; two sides of the inlet of the coil bottom plate are provided with coil guide plates; a coil stock guide rod is arranged above the coil stock bottom plate.

Preferably, a first manipulator is arranged between the first numerical control punch and the first transfer conveying device, and a first transfer sucker is arranged at an execution end of the first manipulator;

and second manipulators are arranged between the second transfer conveying device and the third hydraulic punch press and between the third hydraulic punch press and the finished product collecting device, and second transfer suckers are arranged at executing ends of the second manipulators.

Preferably, the tail end of the second transfer conveying device is provided with a positioning baffle, two alignment plates which are arranged in a sliding mode are arranged on the lower portion between the positioning baffle and the second transfer conveying device, and pin shafts used for alignment are arranged on the upper end faces of the alignment plates; the alignment plate is connected with a driving cylinder for controlling the alignment plate to move.

The second purpose of the invention is to provide a sheet metal part production process, which sequentially comprises the following steps:

s1: the steel plate cache feeding device conveys the whole sheet metal to a first numerical control punch;

s2: the first numerical control punch cuts the steel plate;

s3: feeding the blanking product formed by stamping into a first transfer conveying device, and conveying the blanking product to one side of a second punch through the first transfer conveying device;

s4: the second punch cuts the blanking product for the second time to form a lug folding product;

s5: the ear folding products are conveyed into a second transfer conveying device and conveyed to one side of a third hydraulic punch through the second transfer conveying device;

s6: bending the lug folding product by a third hydraulic press to form a finished product;

s7: and (5) conveying the finished product into a finished product collecting device for collection.

In summary, the feeding device has the advantages that the buffer component is arranged to accommodate the metal plate with the larger length, the metal plate is conveyed to the feeding mechanism through the conveying mechanism, and then the metal plate is conveyed to the first numerical control punch step by step through the feeding mechanism, so that the first numerical control punch gradually punches the metal plate, and the feeding of the metal plate with the larger length is realized. And the metal plate is further processed sequentially through the first transfer conveying device, the second transfer conveying device, the third hydraulic punch press and the finished product collecting device, so that automatic production is realized, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic view of the structure of the production line of the present invention.

Fig. 2 is a schematic structural diagram of a metal plate, a blanking product, a folded lug product and a finished product.

FIG. 3 is a schematic structural diagram of a steel plate buffer feeding device.

Fig. 4 is a schematic structural diagram of a cache mechanism.

Fig. 5 is a partial enlarged view of a portion a in fig. 4.

Fig. 6 is a schematic structural diagram of the feeding mechanism and the feeding guide mechanism.

Fig. 7 is a partially enlarged view of fig. 6 at B.

Fig. 8 is a schematic structural view of the lower parts of the feeding mechanism and the feeding guide mechanism.

Fig. 9 is a partially enlarged view of fig. 8 at C.

Fig. 10 is a schematic structural view of the conveyance mechanism.

Fig. 11 is a schematic structural view of a scrap roll apparatus.

Fig. 12 is a schematic structural view of the first robot.

Fig. 13 is a schematic structural view of the second robot.

Fig. 14 is a schematic structural view of the positioning baffle, the alignment plate, and the driving cylinder.

Detailed Description

As shown in fig. 1, an automatic sheet metal part production system comprises a steel plate buffer feeding device 1, a first numerical control punch 2, a first transfer conveying device 3, a second punch 4, a second transfer conveying device 5, a third hydraulic punch 6 and a finished product collecting device 7 which are arranged in sequence. The steel plate buffer feeding device 1 is used for conveying a whole sheet metal to the first numerical control punch 2. The first numerical control punch 2 is used for cutting the steel plate to form a blanking product. The first transfer conveyor 3 is used for conveying the blanking product to one side of the second punch 4. The second punch 4 is used for cutting the blanking product for the second time to form a lug folding product. The second transfer conveyor 5 is used for conveying the ear bending products to one side of a third hydraulic press 6. And the third hydraulic punch 6 is used for punching the lug folding product to form a finished product, and the finished product is in the shape of a hollow cuboid with the top surface removed.

As shown in fig. 2, the whole sheet metal 81 is rectangular and thin. The blanking product 82 is formed by stamping a metal plate 81, and has a substantially rectangular shape with notches at four corners of the rectangular shape. The folded lug product 83 is formed by punching the blanking product 82, and folded lugs folded upwards are arranged at four corners of the folded lug product 83. The finish 84 is stamped from the lug product and is in the shape of a hollow cuboid with the top surface removed.

As shown in fig. 3, the steel plate buffer feeding device 1 includes a buffer mechanism 11, a feeding mechanism 12, and a carrying mechanism 13. The buffer mechanism 11 is internally provided with metal plates which are stacked up and down. One side of the cache mechanism 11 is provided with a feeding mechanism 12, a transverse feeding channel is arranged in the feeding mechanism 12, and the output end of the feeding channel is connected with the first numerical control punch 2. The feeding mechanism 12 is used for conveying the sheet metal to the first numerical control punch 2, and the feeding mechanism 12 can convey the sheet metal with larger length due to the existence of the feeding channel. The buffer mechanism 11 is connected with the feeding mechanism 12 through a conveying mechanism 13, and the conveying mechanism 13 is positioned above the buffer mechanism 11 and the feeding mechanism 12.

As shown in fig. 4, the buffer mechanism 11 includes a buffer bottom plate 111 and a side limiting rod 112, the buffer bottom plate 111 is transversely disposed, the side limiting rods 112 are disposed around the buffer bottom plate 111, so that a buffer space is formed above the buffer bottom plate 111, and the metal plate 81 is stacked in the buffer space.

Preferably, the buffer base 111 is provided at the bottom thereof with a lifter 113 and a lifting guide 1111. The elevator 113 is used to lift the sheet metal 81 upward, and the conveying mechanism 13 can suck the sheet metal 81. The lifting guide rods 1111 are used for limiting the lifting of the buffer base plate 111.

Preferably, the side limiting rod 112 comprises a left limiting rod 1121, a right limiting rod 1121, a front limiting rod 1122 and a rear limiting rod 1122, so that the buffer memory space is limited in four directions, namely, the front direction, the rear direction, the left direction and the right direction, and the metal plate can be buffered conveniently. The left and right stoppers 1121 are provided at the bottoms of the left and right stoppers 1121 respectively with left and right adjustment members 114, and the left and right adjustment members 114 are used to adjust the positions of the left and right stoppers 1121 in the left and right directions. For example, the left-right adjusting member 114 is a screw member. A front-rear adjusting member 115 is provided at the bottom of the front-rear stopper rod 1122, and the front-rear adjusting member 115 is used to adjust the distance between the front and rear of the front-rear stopper rod 1122. For example, the forward and backward screw members are used as the forward and backward adjusting members 115. The sheet metal 81 with different sizes can be adapted by adjusting the positions of the left and right limiting rods 1121 and the front and rear limiting rods 1122.

As shown in fig. 5, the top of the side limiting rod 112 is provided with a material blocking block 116 towards the side of the buffer space, the lower part of the material blocking block 116 is rotatably arranged on the side limiting rod 112, and the side of the material blocking block 116 departing from the buffer space is provided with a spring, so that the metal plate cannot fall out of the side limiting rod 112 without the action of external force.

As shown in fig. 6 to 9, the feeding mechanism 12 includes a feeding frame, and a feeding rail 121, a feeding jaw 122, a feeding jaw cylinder 123, a feeding slide table 124, and a slide table driving part 125 mounted on the feeding frame. The feeding track 121 is located on one side of the buffer bottom plate 111, and the output end of the feeding track 121 is connected to the first numerical control press 2. The side of the feeding rail 121 far away from the output end is provided with a feeding clamping jaw 122, and the feeding clamping jaw 122 is used for clamping the end part of a sheet metal plate during feeding. The feeding clamping jaw 122 is connected with a feeding clamping jaw air cylinder 123, the feeding clamping jaw air cylinder 123 is arranged on a feeding sliding table 124, the feeding sliding table 124 is arranged on the feeding frame in a sliding mode, and the sliding direction of the feeding sliding table 124 is consistent with the conveying direction of the feeding rail 121. The feeding sliding table 124 is connected to a sliding table driving part 125 to drive the feeding sliding table 124 to slide.

Preferably, the feeding rail 121 is provided with a plurality of rollers 1211 for facilitating feeding of the sheet metal.

Preferably, the slide table driving part 125 includes a slide table motor 1251, a pulley 1252, a belt 1253, a belt clamp 1254, and a bearing 1255. The sliding table motor 1251 is longitudinally arranged on the feeding sliding table 124, a belt pulley 1252 is arranged at the output end of the sliding table motor 1251, a belt 1253 is arranged on the belt pulley 1252 in a matching mode, belt clamps 1254 are fixedly arranged at two ends of the belt 1253, and the belt clamps 1254 are located at two ends of the feeding frame. Bearings 1255 are provided on both sides of the pulley 1252, and the belt 1253 is attached to the bearings 1255, the bearings 1255 serving to tension the belt 1252. When the sliding table driving part 125 operates, the sliding table motor 1251 drives the pulley 1252 to rotate, so that the pulley 1252 rolls on the belt 1253 to drive the feeding sliding table 124 to slide.

Preferably, the feeding mechanism 12 is further provided with a feeding guide mechanism 14, and the feeding guide mechanism 14 includes a feeding guide rail 141, a lateral guide wheel 142, a guide slide rail 143, and a feeding guide rail adjusting component 144. The outer sides of the feeding rails 121 are respectively provided with a feeding guide rail 141, and the side of the feeding guide rail 141 facing the feeding rails 121 is provided with a plurality of side guide wheels 142 arranged side by side, so that the sheet metal 81 can be conveyed conveniently. The bottom of the feeding guide rail 141 is slidably disposed on the guide rail 143, and the direction of the guide rail 143 is perpendicular to the conveying direction of the feeding rail 121. The feeding guide rail 141 is connected with a feeding guide rail adjusting part 144, and the feeding guide rail adjusting part 144 adjusts the distance between the two feeding guide rails 141 to adapt to metal plates 81 with different sizes.

As shown in fig. 10, the conveying mechanism 13 includes a conveying bracket 131, a lateral conveying member 132, a vertical conveying member 133, a suction cup mounting bracket 134, and a conveying suction cup 135. The conveying bracket 131 is arranged above the buffer mechanism 11 and the feeding mechanism 12, the conveying bracket 131 is provided with a horizontal conveying component 132 and a vertical conveying component 133 which are connected with each other, the lower part of the vertical conveying component 133 is provided with a sucker mounting bracket 134, and the lower part of the sucker mounting bracket 134 is provided with a conveying sucker 135. The lateral transfer member 132 includes a laterally disposed cylinder, and the longitudinal transfer member 133 includes a longitudinally disposed cylinder.

Steel sheet buffer memory feeding device 1 solves the problem that current loading attachment is difficult to carry out automatic feeding to the longer panel beating of length. The steel plate buffer feeding device 1 has the advantages that the side limiting rods 112 are arranged on the periphery of the buffer bottom plate 111, so that buffer storage of metal plates is facilitated. The inner metal plates in the buffer storage space are conveyed to the feeding mechanism 12 through the conveying mechanism 13, so that the metal plates are distributed. When feeding, the feeding mechanism 12 clamps one end of the metal plate through the feeding clamping jaw 122, and then feeds the metal plate, and when feeding, the metal plate is located in the feeding track 121, so that the metal plate can be accurately conveyed without deviation, and the feeding of the metal plate is facilitated. Meanwhile, the sliding table driving part 125 can control the metal plate to move step by step, so that the metal plate can be fed section by section, and the feeding of the metal plate with larger length is facilitated.

As shown in fig. 11, a scrap coiling device 21 is arranged on the discharge side of the first numerical control press 2, and the steel plate buffer feeding device 1, the first numerical control press 2 and the scrap coiling device 21 are in a straight line. The scrap winder 21 includes a winder base 211, a drive roller 212, a driven roller 213, and a drive roller drive assembly 214. One end of the coil bottom plate 211 is connected to the first numerical control press 2, the other end of the coil bottom plate 211 is provided with a driving roller 212, a driven roller 213 is arranged above or below the driving roller 212, and one end of the driving roller 212 is connected to a driving roller driving part 214. Preferably, the roll guide plates 2111 are provided at both sides of the entrance of the roll base 211. A coil guide bar 2112 is arranged above the coil bottom plate 211. The coil stock guide plate 2111 and the coil stock guide rod 2112 are beneficial to guiding the punched sheet metal excess stock, and the sheet metal excess stock is convenient to discharge. The active roller driving part 214 may employ a motor.

The scrap coiling device 21 is used for taking out the stamped sheet metal excess materials from the first numerical control punch 2. When the scrap rolling device 21 is operated, the driving roller driving part 214 drives the driving roller 212 to rotate, so that the sheet metal scrap is output from between the driving roller 212 and the driven roller 213.

As shown in fig. 1, a first robot 31 is disposed between the first numerical control press 2 and the first transfer conveyor 3, and second robots 51 are disposed between the second transfer conveyor 5 and the third hydraulic press 6 and between the third hydraulic press 6 and the finished product collecting device 7.

As shown in fig. 12 and 13, the execution end of the first robot 31 is provided with a first transfer chuck 311. The execution end of the second robot 51 is provided with a second relay chuck 511.

As shown in fig. 14, a positioning baffle 52 is disposed at the end of the second transfer conveyor 5, two alignment plates 53 which are slidably disposed are disposed at the lower portion between the positioning baffle 52 and the second transfer conveyor 5, and a pin 54 for alignment is disposed on the upper end surface of each alignment plate 53. The alignment plate 53 is connected to a driving cylinder 55 for controlling the movement of the alignment plate 53. When the folded lug product 83 moves to the end of the second transfer conveyor 5, the folded lug product is firstly supported by the aligning plates 53 and then contacts with the positioning baffle plate 52, and then the driving air cylinder 55 drives the two aligning plates 53 to approach each other, so that the pin shafts 54 clamp the folded lug product from two sides of the folded lug product and position the folded lug product, thereby facilitating the subsequent grabbing of the second manipulator 51.

The first numerical control press 2, the second press 4 and the third hydraulic press 6 mentioned in the present application are prior art.

A sheet metal part production process sequentially comprises the following steps:

s1: the steel plate cache feeding device 1 conveys a whole sheet metal to a first numerical control punch 2;

s2: the first numerical control punch 2 cuts the steel plate;

s3: feeding the blanking product formed by stamping into a first transfer conveying device 3, and conveying the blanking product to one side of a second punch 4 through the first transfer conveying device 3;

s4: the second punch 4 cuts the blanking product for the second time to form a lug folding product;

s5: the ear folding products are conveyed to a second transfer conveying device 5 and conveyed to one side of a third hydraulic punch 6 through the second transfer conveying device 5;

s6: the third hydraulic punch 6 bends the folded lug product to form a finished product;

s7: the finished product is sent to a finished product collecting device 7 for collection.

The metal plate feeding device has the advantages that the buffer memory component 11 is arranged to accommodate metal plates with large lengths, the metal plates are conveyed into the feeding mechanism 12 through the conveying mechanism 13, and then the metal plates are conveyed into the first numerical control punch press 2 step by step through the feeding mechanism 12, so that the first numerical control punch press 2 can punch the metal plates step by step, and the metal plates with large lengths can be fed. And the metal plates are further processed sequentially through a first transfer conveying device 3, a second punch press 4, a second transfer conveying device 5, a third hydraulic punch press 6 and a finished product collecting device 7, so that automatic production is realized, and the production efficiency is improved.

Claims

1. An automatic sheet metal part production system is characterized by comprising a steel plate buffer feeding device (1), a first numerical control punch (2), a first transfer conveying device (3), a second punch (4), a second transfer conveying device (5), a third hydraulic punch (6) and a finished product collecting device (7) which are arranged in sequence; the steel plate buffer feeding device (1) is used for conveying a whole piece of metal plate to the first numerical control punch (2); the first numerical control punch (2) is used for cutting the steel plate to form a blanking product; the first transfer conveying device (3) is used for conveying the blanking products to one side of the second punch press (4); the second punch (4) is used for carrying out secondary cutting on the blanking product to form a lug folding product; the second transfer conveying device (5) is used for conveying the folded lug products to one side of the third hydraulic punch press (6); the third hydraulic punch (6) is used for punching the folded lug product to form a finished product, and the finished product is in the shape of a hollow cuboid with the top surface removed;

the steel plate buffer feeding device (1) comprises a buffer mechanism (11), a feeding mechanism (12) and a carrying mechanism (13); a feeding mechanism (12) is arranged on one side of the cache mechanism (11), a feeding channel along the transverse direction is arranged in the feeding mechanism (12), and the output end of the feeding channel is connected with the first numerical control punch (2); the buffer mechanism (11) is connected with the feeding mechanism (12) through a conveying mechanism (13), and the conveying mechanism (13) is positioned above the buffer mechanism (11) and the feeding mechanism (12).

2. The automatic sheet metal part production system according to claim 1, wherein the buffer mechanism (11) comprises a buffer bottom plate (111) and side limiting rods (112), the buffer bottom plate (111) is transversely arranged, and the side limiting rods (112) are arranged around the buffer bottom plate (111) so that a buffer space is formed above the buffer bottom plate (111);

the feeding mechanism (12) comprises a feeding frame, a feeding rail (121), a feeding clamping jaw (122), a feeding clamping jaw cylinder (123), a feeding sliding table (124) and a sliding table driving part (125), wherein the feeding rail, the feeding clamping jaw cylinder, the feeding sliding table and the sliding table driving part are arranged on the feeding frame; the feeding track (121) is positioned on one side of the buffer bottom plate (111), and the output end of the feeding track (121) is connected to the first numerical control punch (2); a feeding clamping jaw (122) is arranged on the side, far away from the output end, of the feeding rail (121), and the feeding clamping jaw (122) is used for clamping the end part of a sheet metal plate during feeding; the feeding clamping jaw cylinder (123) is connected to the feeding clamping jaw (122), the feeding clamping jaw cylinder (123) is arranged on the feeding sliding table (124), the feeding sliding table (124) is arranged on the feeding frame in a sliding mode, and the sliding direction of the feeding sliding table (124) is consistent with the conveying direction of the feeding rail (121); the feeding sliding table (124) is connected with a sliding table driving part (125) to drive the feeding sliding table (124) to slide;

the conveying mechanism (13) comprises a conveying bracket (131), a transverse conveying component (132), a longitudinal conveying component (133), a sucker mounting frame (134) and a conveying sucker (135); the conveying support (131) is erected above the buffer mechanism (11) and the feeding mechanism (12), a transverse conveying component (132) and a longitudinal conveying component (133) which are connected with each other are arranged on the conveying support (131), a sucker mounting frame (134) is arranged at the lower part of the longitudinal conveying component (133), and a conveying sucker (135) is arranged at the lower part of the sucker mounting frame (134).

3. The automatic sheet metal part production system according to claim 2, wherein the bottom of the buffer bottom plate (111) is provided with a lifter (113) and a lifting guide rod (1111); the side limiting rod (112) comprises a left limiting rod (1121) and a right limiting rod (1122), left and right adjusting parts (114) are respectively arranged at the bottoms of the left and right limiting rods (1121), and the left and right adjusting parts (114) are used for adjusting the positions of the left and right limiting rods (1121) along the left and right directions; the bottom of the front and rear limiting rod (1122) is provided with a front and rear adjusting component (115), and the front and rear adjusting component (115) is used for adjusting the distance between the front and rear limiting rods (1122) and the rear;

the top of side gag lever post (112) is provided with material blocking block (116) towards the side of buffer memory space, and the lower part of material blocking block (116) rotates and sets up on side gag lever post (112), and material blocking block (116) set up the spring deviating from the side of buffer memory space.

4. An automated production system for sheet metal parts according to claim 2, wherein a plurality of rollers (1211) are provided on the feeding track (121);

the sliding table driving part (125) comprises a sliding table motor (1251), a belt pulley (1252), a belt (1253), a belt clamp (1254) and a bearing (1255); the sliding table motor (1251) is longitudinally arranged on the feeding sliding table (124), the output end of the sliding table motor (1251) is provided with a belt pulley (1252), the belt pulley (1252) is provided with a belt (1253) in a matching manner, two ends of the belt (1253) are fixedly provided with belt clamps (1254), and the belt clamps (1254) are positioned at two ends of the feeding frame; bearings (1255) are arranged on two sides of the belt pulley (1252), and the belt (1253) is connected to the bearings (1255).

5. An automated sheet metal part production system according to claim 2, wherein the lateral moving member (132) comprises a laterally disposed air cylinder and the longitudinal moving member (133) comprises a longitudinally disposed air cylinder.

6. The automatic sheet metal part production system according to claim 2, wherein the feeding mechanism (12) is further provided with a feeding guide mechanism (14), and the feeding guide mechanism (14) comprises a feeding guide rail (141), a side guide wheel (142), a guide slide rail (143) and a feeding guide rail adjusting part (144); the outer side of the feeding track (121) is respectively provided with a feeding guide track (141), and the side of the feeding guide track (141) facing the feeding track (121) is provided with a plurality of side guide wheels (142) which are arranged side by side; the bottom of the feeding guide rail (141) is arranged on the guide slide rail (143) in a sliding manner, and the direction of the guide slide rail (143) is vertical to the conveying direction of the feeding rail (121); the feeding guide rail (141) is connected with a feeding guide rail adjusting part (144), and the feeding guide rail adjusting part (144) adjusts the distance between the two feeding guide rails (141).

7. The automatic sheet metal part production system according to claim 1, wherein a scrap coiling device (21) is arranged on the discharge side of the first numerical control punch (2), and the steel plate buffer feeding device (1), the first numerical control punch (2) and the scrap coiling device (21) are in a straight line; the waste material coiling device (21) comprises a coiling bottom plate (211), a driving roller (212), a driven roller (213) and a driving roller driving part (214); one end of a coil stock bottom plate (211) is connected to the first numerical control punch (2), the other end of the coil stock bottom plate (211) is provided with a driving roller (212), a driven roller (213) is arranged above or below the driving roller (212), and one end of the driving roller (212) is connected with a driving roller driving part (214); two sides of the inlet of the coil bottom plate (211) are provided with coil guide plates (2111); a coil stock guide rod (2112) is arranged above the coil stock bottom plate (211).

8. The automatic sheet metal part production system according to claim 1, wherein a first manipulator (31) is arranged between the first numerical control punch (2) and the first transfer conveyor (3), and an execution end of the first manipulator (31) is provided with a first transfer sucker (311);

second transfer suckers (511) are arranged at the execution ends of the second mechanical arms (51).

9. The automatic sheet metal part production system according to claim 1, wherein a positioning baffle (52) is arranged at the tail end of the second transfer conveying device (5), two aligning plates (53) which are arranged in a sliding manner are arranged at the lower part between the positioning baffle (52) and the second transfer conveying device (5), and a pin shaft (54) for aligning is arranged on the upper end surface of each aligning plate (53); the alignment plate (53) is connected with a driving cylinder (55) for controlling the alignment plate (53) to move.

10. A sheet metal part production process, which adopts the automatic production system of any one of claims 1 to 9, and is characterized in that the following steps are sequentially performed:

s1: the steel plate cache feeding device (1) conveys a whole piece of metal plate to a first numerical control punch (2);

s2: the first numerical control punch (2) cuts the steel plate;

s3: feeding the blanking product formed by stamping into a first transfer conveying device (3), and conveying the blanking product to one side of a second punch (4) through the first transfer conveying device (3);

s4: the second punch (4) cuts the blanking product for the second time to form a lug folding product;

s5: the ear folding products are sent to a second transfer conveying device (5) and conveyed to one side of a third hydraulic punch (6) through the second transfer conveying device (5);

s6: a third hydraulic punch (6) bends the folded lug product to form a finished product;

s7: and conveying the finished product into a finished product collecting device (7) for collection.