An automated production line for steel frames

Abstract

This invention discloses an automated production line for steel frames, including a feeding machine, a roll forming table, a cutting table, and a punching table. The punching table includes a die base, and further includes: a positioning seat, which is disposed on the die base for positioning the workpiece; a back plate, which is movably disposed on the die base, with a punch disposed at one end facing the positioning seat; a stripper plate, which is elastically and movably sleeved on the punch; a die, which is movably disposed on the positioning seat and located inside the workpiece; and a linkage assembly, which is disposed on the positioning seat. This invention, through the linkage assembly, allows the stripper plate to first conform to the outer side of the workpiece when the punch approaches the punching surface of the workpiece. Then, through the linkage assembly, the die is linked to conform to the inner side of the workpiece, so that the stripper plate and the die form a clamping action on the punching surface of the workpiece, facilitating stable punching of the workpiece by the subsequent punch. Furthermore, when the punch retracts, the die can also be linked to move away from the inner side of the workpiece, thus not hindering the delivery of the processed workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of steel frame production, and in particular to an automated production line for steel frames. Background Art

[0002] In the solar panel structure, a metal profile frame structure is used as a support frame. In the production line processing of such profiles, the steel ring is unloaded and then rolled into shape on a roller table. Then, installation holes or grounding holes are reserved on the steel frame through corresponding hole-opening equipment. The existing steel frame automated production line can basically meet daily use needs, but there are still some shortcomings that need to be improved.

[0003] Patent document CN117161209A, published on December 5, 2023, discloses an automated punching device for steel frames, which relates to the field of metal profile processing equipment, including a base and a plurality of parallel punching devices, each of which is connected to the base through an adjustment mechanism, the adjustment mechanism comprising: a slide rail assembly, which includes a track structure located on the base, and the track structure is adapted to be equipped with a plurality of slide structures fixed one-to-one with each punching device; a drive assembly, which includes a worm engaged with the slide structure, and the position of the punching device on the base changes when the worm rotates. The present invention provides an adjustment mechanism for adjusting the spacing between each punching device on the base, and the slide mechanism with the punching device fixed thereon is moved along the track structure through the drive assembly, thereby facilitating the adjustment of the spacing between each punching device, facilitating the adjustment of the punching spacing, improving flexibility, and reducing the occupancy rate of punching equipment by products of a single model size.

[0004] As in the prior art of the above patent, this type of steel frame has a bending structure, and a hole needs to be opened on one of the side surfaces, so there is a need to set the stamping die on the inside of the workpiece, which affects the removal of the workpiece after punching. Therefore, an automated production line for steel frames is urgently needed to solve the above problem. Summary of the invention

[0005] The purpose of the present invention is to provide an automated production line for steel frames to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] An automated production line for steel frames comprises a feeder, a rolling processing table, a cutting table and a punching table. The punching table comprises a die base and further comprises: a positioning seat, which is arranged on the die base and is used to position a workpiece; a back plate, which is movably arranged on the die base and is provided with a punch at one end facing the positioning seat; a stripper plate, which is elastically and movably sleeved on the punch; a die, which is movably arranged on the positioning seat and is located on the inner side of the workpiece; a linkage assembly, which is arranged on the positioning seat and is used to link the die to synchronously fit the inner side of the workpiece when the stripper plate fits the workpiece to clamp the punching surface of the workpiece.

[0008] Preferably, a hydraulic cylinder is provided on the mold base, and the back plate is fixedly connected to the output end of the hydraulic cylinder.

[0009] Preferably, the stripping plate is provided with a guide column, the guide column movably penetrates the back plate, and a first elastic member is connected between the stripping plate and the back plate.

[0010] Preferably, the linkage assembly includes a linkage seat elastically slidingly arranged in the positioning seat and a flipping piece rotatably arranged on the positioning seat close to the punch side. The rotation of the flipping piece is linked to the sliding of the linkage seat, the die slides with the linkage seat, and the flipping piece can be tilted upward to be within the moving range of the stripping plate.

[0011] Preferably, a synchronization groove is provided on the linkage seat, and a synchronization block is provided in the synchronization groove which can be raised and lowered. The synchronization block is fixedly connected to the die by sliding through the first connecting piece of the positioning seat. When the die moves closer to the punch, its height increases and the through hole on it becomes coaxial with the punch, and when it moves away from the punch, its height decreases.

[0012] Preferably, the positioning seat is provided with an active groove for the linkage seat and the synchronization block to move, a second elastic member is connected between the inner wall of the active groove and the linkage seat, a climbing block is provided on the side wall of the synchronization block, and a climbing groove matching the climbing block is provided on the inner wall of the active groove.

[0013] Preferably, the flip member is coaxially connected with a gear, and a rack matching the gear is hinged on the linkage seat. The rack has a first state in which it can form meshing transmission with the gear and a second state in which it avoids the gear and does not transmit during the rotation stroke. A switching component for controlling the switching of the rack state is provided on the linkage seat, and the switching component controls the rack to switch from the first state to the second state when the punching action of the punch extending toward the workpiece is completed.

[0014] Preferably, the switching assembly includes a slide groove arranged on the linkage seat, a slider is elastically slidably arranged in the slide groove, a linkage groove is arranged on the rack, a linkage pin is slidably arranged in the linkage groove, the linkage pin and the slider are connected by a second connecting piece, one end of the slide groove points to the back plate and is open, and a top block corresponding to the slide groove is arranged on the back plate.

[0015] Preferably, an elastic groove is provided in the slider, a limiting member is elastically connected in the elastic groove, the limiting member slides through the side wall of the slider, and a limiting hole matching the limiting member is provided on the side wall of the linkage seat. When the punching action of the punch extending toward the workpiece is completed, the top block pushes the slider to move until the limiting member corresponds to the limiting hole.

[0016] Preferably, the flipping member is elastically rotatably connected to the positioning seat and is unidirectionally transmission connected to the gear.

[0017] In the above technical solution, the beneficial effects of the present invention are:

[0018] The steel frame automatic production line is equipped with a linkage component. When the punch approaches the punching surface of the workpiece, the stripper plate first fits against the outside of the workpiece, and then the linkage component links the die to fit against the inside of the workpiece, so that the stripper plate and the die can clamp the punching surface of the workpiece, making it convenient for the subsequent punch to punch the workpiece stably. Then, when the punch retreats, the die can also be linked to move away from the inside of the workpiece, thereby not hindering the delivery of the workpiece after processing.

[0019] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0020] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the overall structure of a punching station provided in an embodiment of the present invention;

[0023] Figure 2 An overall top view schematic diagram of a production line provided by an embodiment of the present invention;

[0024] Figure 3 A schematic structural diagram of a mold base and its upper components provided in an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of a front cross-sectional structure of a die base with a stripper plate and a workpiece separated provided by an embodiment of the present invention;

[0026] Figure 5 The embodiment of the present invention provides Figure 4A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 6 A schematic diagram of the front cross-sectional structure of a die base with a stripper plate and a workpiece in contact with each other provided by an embodiment of the present invention;

[0028] Figure 7 The embodiment of the present invention provides Figure 6 A schematic diagram of the enlarged structure at B in the middle;

[0029] Figure 8 A schematic diagram of the front cross-sectional structure of a mold base in a second state of a rack provided by an embodiment of the present invention;

[0030] Fig. 9 The embodiment of the present invention provides Figure 8 Schematic diagram of the enlarged structure at C in the middle;

[0031] Fig.10 A schematic diagram of a top cross-sectional structure of a mold base with a top block extending into a slide groove provided in an embodiment of the present invention;

[0032] Fig.11 The embodiment of the present invention provides Fig.10 Schematic diagram of the enlarged structure at D in the middle;

[0033] Fig.12 A schematic diagram of the structure of a linkage component provided in an embodiment of the present invention;

[0034] Fig.13 A schematic diagram of a top cross-sectional structure of a mold base provided in an embodiment of the present invention;

[0035] Fig.14 A schematic diagram of a top cross-sectional structure of a mold base at a flip member provided by an embodiment of the present invention;

[0036] Fig.15 A schematic diagram of the structure of a climbing trough provided in an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 1. Die base; 2. Positioning base; 3. Back plate; 4. Punch; 5. Stripper plate; 6. Concave die; 7. Hydraulic cylinder; 8. Guide column; 9. First elastic member; 10. Turning member; 11. Linkage seat; 12. Synchronous groove; 13. Synchronous block; 14. First connecting member; 15. Movable groove; 16. Second elastic member; 17. Climbing block; 18. Climbing groove; 19. Gear; 20. Rack; 21. Slide; 22. Slider; 23. Linkage groove; 24. Linkage pin; 25. Second connecting member; 26. Top block; 27. Elastic groove; 28. Limiting member; 29. ​​Limiting hole; 30. Leaning member; 31. Third elastic member; 32. Fourth elastic member; 33. Transition groove. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0040] See also Figure 1-15 An embodiment of the present invention provides an automated production line for steel frames, comprising a feeder, a rolling processing table, a cutting table and a punching table, wherein the punching table comprises a die base 1, and further comprises: a positioning seat 2, which is arranged on the die base 1 and is used to position a workpiece; a back plate 3, which is movably arranged on the die base 1 and is provided with a punch 4 at one end thereof facing the positioning seat 2; a stripper plate 5, which is elastically and movably sleeved on the punch 4; a die 6, which is movably arranged on the positioning seat 2 and is located on the inner side of the workpiece; a linkage assembly, which is arranged on the positioning seat 2 and is used for the linkage die 6 to synchronously fit the inner side of the workpiece to clamp the punching surface of the workpiece when the stripper plate 5 fits the workpiece.

[0041] Specifically, the feeder is used to feed the rolled steel ring into the rolling processing table; the rolling processing table is provided with multiple rolling wheel structures arranged along the conveying direction of the steel ring, and the rolling processing angle of the multiple rolling wheels gradually increases along the direction of the steel ring until the desired steel frame profile is formed; the cutting table is an online working mode with a tracking function. Under the control of the servo system, it moves with the conveying of the steel profile to maintain a relatively static relationship for cutting, so as to ensure the flushness of the cut of the steel frame profile. The punching table also includes a fixed plate, and multiple die holders 1 are provided on the same fixed plate. The die holders 1 can move and adjust the position along the length direction of the steel frame profile on the fixed plate, thereby adjusting the punching spacing; the punch 4 and the die 6 form a punching die, and the punching die can be replaced on the punching table to meet various hole type requirements. The die base 1 is preferably L-shaped, with one part laid flat and the other part standing upright; the positioning base 2 is fixedly arranged on the flat part of the die base 1, and the back plate 3 is movably connected to the standing part of the die base 1, and the back plate 3 moves horizontally close to or away from the positioning base 2; a hydraulic cylinder 7 is arranged on the die base 1, and the back plate 3 is fixedly connected to the output end of the hydraulic cylinder 7; the hydraulic cylinder 7 is fixedly installed on the outside of the standing part of the die base 1, and the output end of the hydraulic cylinder 7 points to the positioning base 2. The positioning base 2 is also preferably L-shaped, with one part laid flat on the die base 1 and the other part standing upright and on the side away from the back plate 3. A leaning member 30 is also arranged on the positioning base 2, and a positioning groove is formed between the leaning member 30 and the standing part of the positioning base 2. A part of the workpiece is embedded in the positioning groove, and the workpiece can move up and down to leave the positioning base 2. The workpiece can be moved up and down by a mechanical arm to enter and exit the punching table. The punch 4 is coaxially arranged with the output end of the hydraulic cylinder 7 on the back plate 3 or axially arranged close to the output end of the hydraulic cylinder 7, thereby making the force effect stable; the stripper plate 5 is elastically movable, and when it is not subjected to force, the stripper plate 5 is sleeved on one end of the punch 4 close to the positioning seat 2, and the end of the punch 4 does not extend out of the end face of the stripper plate 5 close to the positioning seat 2; a through hole is arranged on the die 6, and the size of the through hole matches the size of the punch 4; the die 6 moves horizontally towards or away from the back plate 3; a structure bent inward is left at the lower end of the punching surface of the workpiece, so that when the die 6 is close to the punching surface of the workpiece, the workpiece is limited to move upward and away from the punching table; when the die 6 is away from the punching surface of the workpiece, the upward movement of the workpiece is not restricted. The relationship between the linkage assembly linking the stripping plate 5 and the die 6 is specifically as follows: when the stripping plate 5 is close to the outside of the punching surface of the workpiece, the die 6 moves to the inside of the punching surface of the workpiece, and at least when the stripping plate 5 leaves the workpiece surface, the die 6 is also away from the inside of the punching surface of the workpiece, and does not affect the up and down movement of the workpiece. In actual use of this technical solution, when the punch 4 approaches the punching surface of the workpiece, the stripping plate 5 first fits with the outside of the workpiece, and then the die 6 is linked to the inside of the workpiece through the linkage assembly, so that the stripping plate 5 and the die 6 form a clamp on the punching surface of the workpiece, which is convenient for the subsequent punch 4 to punch the workpiece stably, and then when the punch 4 retreats, the die 6 can also be linked to move away from the inside of the workpiece, thereby not hindering the delivery of the workpiece after processing.

[0042] Compared with the prior art, an automated production line for steel frames proposed in an embodiment of the present invention is provided with a linkage component. When the punch 4 approaches the punching surface of the workpiece, the stripper plate 5 first fits against the outer side of the workpiece, and then the linkage component is used to link the die 6 to fit against the inner side of the workpiece, so that the stripper plate 5 and the die 6 form a clamp on the punching surface of the workpiece, which is convenient for the subsequent punch 4 to punch the workpiece stably. Then, when the punch 4 retreats, the die 6 can also be linked to move away from the inner side of the workpiece, thereby not hindering the delivery of the workpiece after processing.

[0043] As a preferred technical solution of this embodiment, a guide column 8 is provided on the stripping plate 5, and the guide column 8 is movably arranged through the back plate 3. A first elastic member 9 is connected between the stripping plate 5 and the back plate 3. Specifically, the first elastic member 9 may preferably be a spring, which is then sleeved on the guide column 8. The size of the end of the guide column 8 away from the stripping plate 5 is enlarged to be limited on the back plate 3.

[0044] As the preferred technical solution of this embodiment, the linkage assembly includes a linkage seat 11 elastically slidingly arranged in the positioning seat 2 and a flip member 10 rotatably arranged on the side of the positioning seat 2 close to the punch 4. The rotation of the flip member 10 is linked with the sliding of the linkage seat 11. The die 6 slides with the linkage seat 11. The flip member 10 can be tilted upward to be within the moving range of the stripping plate 5. Specifically, the linkage seat 11 slides horizontally in the positioning seat 2 in the direction close to or away from the back plate 3. The flip member 10 is arranged at the upper end of the side of the positioning seat 2 close to the back plate 3. When the flip member 10 is tilted upward, it extends out of the upper surface of the positioning seat 2. The stripping plate 5 moves toward the workpiece in response to movement, and can push the flipping member 10 to rotate through the upper surface of the positioning seat 2; the linkage relationship between the linkage seat 11 and the flipping member 10 is specifically as follows: when the stripping plate 5 approaches the workpiece to cause the flipping member 10 to rotate, the linkage seat 11 slides toward the direction of the back plate 3, thereby causing the die 6 to move synchronously with the linkage seat 11 to approach the inner side of the punching surface of the workpiece; and when the stripping plate 5 is away from the workpiece, the flipping member 10 is not pushed by external force. At this time, the linkage seat 11 is driven by the elastic force to move back to a position away from the back plate 3, and links the flipping member 10 to recover to be tilted upward.

[0045] In actual situations, in order to meet the blanking needs and reduce wear, the inner diameter of the through hole of the die 6 will be 0.5-1 mm larger than the outer diameter of the punch 4, and the edge of the waste formed by punching often has burrs, which may cause the waste to hold the end of the punch 4.

[0046] As the preferred technical scheme of this embodiment, a synchronization groove 12 is provided on the linkage seat 11, and a synchronization block 13 is provided in the synchronization groove 12 which can be raised and lowered. The synchronization block 13 is fixedly connected to the die 6 by sliding through the first connecting piece 14 of the positioning seat 2. When the die 6 moves close to the punch 4, its height increases and its upper through hole is coaxial with the punch 4, and when it moves away from the punch 4, its height decreases. Specifically, the synchronization groove 12 is arranged in a U shape, which passes through the two opposite side walls and the upper surface of the linkage seat 11; the synchronization block 13 slides horizontally with the linkage seat 11, and the synchronization block 13 can be raised and lowered relative to the linkage seat 11; the first connecting piece 14 connects the die 6 and the synchronization block 13 so that the three can move synchronously; when the die 6 moves close to the inner side of the punching surface of the workpiece to fit the inner side of the punching surface of the workpiece, it is the highest position of the lifting stroke, and its upper through hole is horizontally coaxial with the punch 4; when the die 6 is away from the punching surface of the workpiece, the horizontal height of its upper through hole relative to the punch 4 decreases. In actual use, when the punch 4 approaches the workpiece to perform the punching action, the stripper plate 5 first fits against the outer side of the punching surface of the workpiece, and at the same time, the linked die 6 fits against the inner side of the punching surface of the workpiece. At this time, the through hole on the die 6 corresponds to the axial level of the punch 4, and the punch 4 can smoothly pass through the die 6 after passing through the workpiece. When the punch 4 extends toward the workpiece and the punching action is finished, the die 6 moves away from the punching surface of the workpiece and the height decreases. As a result, the gap between the upper side of the through hole of the die 6 and the outer wall of the punch 4 is eliminated, and it fits tightly against the outer wall of the punch 4 that has not yet moved back. Therefore, in the subsequent moving back process of the punch 4, the waste material adhered or stuck at its end will inevitably be blocked by the die 6 and detached, and the waste material will not be brought back by the punch 4.

[0047] As a preferred technical solution of this embodiment, the positioning seat 2 is provided with an active groove 15 for the linkage seat 11 and the synchronization block 13 to move, and a second elastic member 16 is connected between the inner wall of the active groove 15 and the linkage seat 11, and a climbing block 17 is provided on the side wall of the synchronization block 13. The inner wall of the active groove 15 is provided with a climbing groove 18 matching the climbing block 17. Specifically, the active groove 15 extends to the side wall of the positioning seat 2 close to the back plate 3 and is open; the second elastic member 16 keeps pulling the linkage seat 11 toward the inside of the active groove 15, that is, keeping the linkage seat 11 away from the back plate 3, and the concave mold 6 away away from the back plate 3; the extending direction of the climbing block 17 is set at a certain angle to the horizontal direction, and the height of one end of the climbing block 17 close to the back plate 3 is higher than the height of the other end. When the climbing block 17 moves in the climbing groove 18 toward the back plate 3, the climbing block 17 drives the synchronous block 13 to move upward, and when the climbing block 17 moves in the climbing groove 18 away from the back plate 3, the climbing block 17 drives the synchronous block 13 to move downward. Therefore, when the linkage seat 11 drives the die 6 to approach the back plate 3, the die 6 rises, and when the linkage seat 11 drives the die 6 to move away from the back plate 3, the die 6 descends.

[0048] As a preferred technical solution of this embodiment, the flip member 10 is coaxially connected with a gear 19, and a rack 20 matching the gear 19 is hinged on the linkage seat 11. The rack 20 has a first state in which it can form a meshing transmission with the gear 19 and a second state in which it avoids the gear 19 and does not transmit. A switching component for controlling the state switching of the rack 20 is provided on the linkage seat 11. When the punching action of the punch 4 extending toward the workpiece is completed, the switching component controls the rack 20 to switch from the first state to the second state. Specifically, the gear 19 is coaxial with the flip member 10, and the gear 19 is arranged on the upper side of the rack 20; one end of the rack 20 is hinged with the linkage seat 11, and the other end points to the outside of the movable groove 15; in the first state of the rack 20, that is, the rack 20 is horizontal and keeps meshing with the gear 19, at this time, the rack 20 points to There is a gap between the outer end of the movable groove 15 and the linkage seat 11. The second state of the rack 20, that is, the rack 20 points to the outer end of the movable groove 15 and rotates downward, so that the rack 20 is disengaged from the gear 19 and no longer transmits; in the first state of the rack 20, the rack 20 and the gear 19 maintain transmission, and the gear 19 does not rotate, that is, the linkage seat 11 is restricted from moving. At this time, the elastic potential energy of the second elastic member 16 cannot be released, and in the second state of the rack 20, the rack 20 is disengaged from the gear 19, and the linkage seat 11 can be moved by the second elastic member 16; when the punching action of the punch 4 extending toward the workpiece is completed, the switching component controls the rack 20 to switch from the first state to the second state, and when the linkage seat 11 returns to the innermost position in the movable groove 15, the rack 20 is controlled to switch from the second state to the first state.

[0049] As a preferred technical solution of this embodiment, the switching component includes a slide groove 21 arranged on the linkage seat 11, a slider 22 is elastically slidably arranged in the slide groove 21, a linkage groove 23 is arranged on the rack 20, a linkage pin 24 is slidably arranged in the linkage groove 23, and the linkage pin 24 is connected to the slider 22 through a second connecting member 25. One end of the slide groove 21 points to the back plate 3 and is openly arranged. A top block 26 corresponding to the slide groove 21 is arranged on the back plate 3. Specifically, a third elastic member 31 is arranged in the slide groove 21 to connect the slider 22. The third elastic member 31 keeps pushing the slider 22 and makes the slider 22 on the open side of the slide groove 21; the linkage groove 23 is inclined, and it is close to the rack 20 hinge. The end of the connection position is set higher; the second connecting member 25 connects the slider 22 and the linkage pin 24 so that the three can move synchronously; the second connecting member 25 slides through the linkage seat 11; the slider 22 moves out of the slide groove 21, that is, drives the linkage pin 24 to move toward the lower end of the linkage groove 23, and the free end of the rack 20 is lifted up to switch to the first state, and the slider 22 moves into the slide groove 21, that is, drives the linkage pin 24 to move toward the higher end of the linkage groove 23, and the free end of the rack 20 is lowered downward to switch to the second state; the open setting of the slide groove 21 can, when the punching action of the punch 4 extending toward the workpiece is completed, the back plate 3 drives the top block 26 to extend into the slide groove 21 to push the slider 22.

[0050] As a preferred technical solution of this embodiment, an elastic groove 27 is provided in the slider 22, and a limit piece 28 is elastically connected in the elastic groove 27. The limit piece 28 slides through the side wall of the slider 22, and a limit hole 29 matching the limit piece 28 is provided on the side wall of the linkage seat 11. When the punch 4 extends toward the workpiece, the top block 26 pushes the slider 22 to move to the limit piece 28 corresponding to the limit hole 29. Specifically, a fourth elastic piece 32 is provided in the elastic groove 27, and both ends of the fourth elastic piece 32 are A limiting member 28 is provided, and the two limiting members 28 slide through the two opposite sides of the slider 22; a transition groove 33 matching the limiting member 28 is provided on the inner wall of the movable groove 15, one end of the transition groove 33 faces the open side of the movable groove 15, and the other end transitions to the inclined surface of the inner wall of the movable groove 15; the end of the limiting member 28 extending out of the slider 22 is set to an arc surface, and can be wedge-shaped extruded and matched with the transition groove 33. When the arc surface end of the limiting member 28 corresponds to the limiting hole 29, the slider 22 cannot be limited from being pushed by the fourth elastic member 32. In actual use of the present technical solution, when the punch 4 approaches the workpiece to punch, the stripper plate 5 is fitted to the outside of the punching surface of the workpiece, and the linkage flip member 10 rotates at the same time. At this time, the rack 20 is in the first state, and the flip member 10 drives the linkage seat 11 to move outward of the movable groove 15 through the gear 19 and the rack 20, and the linkage seat 11 also drives the die 6 to fit the inside of the punching surface of the workpiece, and the die 6 moves up so that its through hole corresponds to the axial level of the punch 4; then, the punch passes through the punching surface of the workpiece, and then When the punch 4 is extended to the workpiece, the back plate 3 drives the top block 26 to enter the slide groove 21 to push the slider 22, and the slider 22 moves to squeeze the third elastic member 31, and the slider 22 drives the linkage pin 24 to move to the upper end of the linkage groove 23 through the second connecting member 25, thereby driving the rack 20 to switch from the first state to the second state, and the slider 22 drives the limiting member 28 to correspond to the limiting hole 29, and the limiting member 28 is further extended under the action of the fourth elastic member 32. The slider 22 is inserted into the limiting hole 29, thereby maintaining the position of the slider 22, that is, maintaining the second state of the rack 20; therefore, the linkage seat 11 is not restricted from moving back into the movable groove 15, and the linkage seat 11 begins to move back into the movable groove 15 under the action of the first elastic member 9, and the linkage seat 11 also drives the die 6 away from the inner side of the punching surface of the workpiece, and the die 6 moves downward by a small height, so that its through hole is closely attached to the upper surface of the punch 4; subsequently, when the punch 4 moves back to disengage from the die 6, the downward movement of the die 6 is not restricted , that is, the die 6 can continue to move away from the punching surface of the workpiece, so the first elastic member 9 continues to pull the linkage seat 11 to move into the movable groove 15, and then the linkage seat 11 drives the limit member 28 and the transition groove 33 to be squeezed, so that the limit member 28 moves into the elastic groove 27 and no longer engages with the limit hole 29. The limit member 28 cannot resist the thrust of the third elastic member 31 on the slider 22, and the third elastic member 31 pushes the slider 22 to move out of the slide groove 21 to reset, so that the rack 20 also switches back to the first state.

[0051] As the preferred technical solution of this embodiment, the flip member 10 is elastically rotatably connected to the positioning seat 2, and is unidirectionally transmitted to the gear 19. Specifically, a torsion spring is connected between the rotating shaft of the flip member 10 and the positioning seat 2. The elastic rotation of the flip member 10 allows it to remain tilted upward when it is not subject to force so as to be within the moving range of the stripping plate 5. The unidirectional transmission connection between the flip member 10 and the gear 19 can preferably be a unidirectional bearing or a ratchet transmission. When the flip member 10 is pushed by the stripping plate 5 to rotate, the rotation can be synchronously transmitted to the gear 19. When the stripping plate 5 leaves the flip member 10 and the flip member 10 elastically rotates, the rotation is not synchronously transmitted to the gear 19, thereby avoiding interference between the gear 19 and the rack 20 when the rack 20 returns to the first state.

[0052] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automated production line for steel frames, comprising a feeder, a roller processing table, a cutting table and a punching table, characterized in that: The punching station comprises a die base (1), and further comprises: A positioning seat (2), which is arranged on the mold base (1) and is used to position the workpiece; A back plate (3) is movably arranged on the die base (1), and a punch (4) is arranged at one end of the back plate facing the positioning base (2); A stripping plate (5) which is elastically and movably sleeved on the punch (4); A female die (6) is movably arranged on the positioning seat (2) and is located inside the workpiece; A linkage assembly is arranged on the positioning seat (2) and is used for causing the linkage die (6) to synchronously fit the inner side of the workpiece to clamp the punching surface of the workpiece when the stripping plate (5) fits the workpiece; The linkage assembly comprises a linkage seat (11) elastically slidably arranged in the positioning seat (2) and a flip member (10) rotatably arranged on a side of the positioning seat (2) close to the punch (4), the rotation of the flip member (10) being linked to the sliding of the linkage seat (11), the die (6) sliding along with the linkage seat (11), and the flip member (10) being able to tilt upwards to be within the moving range of the stripping plate (5); The linkage seat (11) is provided with a synchronization groove (12), and a synchronization block (13) is provided in the synchronization groove (12) so as to be liftable. The synchronization block (13) is fixedly connected to the die (6) by a first connection piece (14) that slides through the positioning seat (2). When the die (6) moves closer to the punch (4), its height increases and its upper through hole is coaxial with the punch (4), and when it moves away from the punch (4), its height decreases.

2. The steel frame automated production line according to claim 1, characterized in that: The mold base (1) is provided with a hydraulic cylinder (7), and the back plate (3) is fixedly connected to the output end of the hydraulic cylinder (7).

3. The steel frame automated production line according to claim 1 is characterized in that: A guide column (8) is provided on the stripping plate (5), and the guide column (8) is movably arranged to penetrate the back plate (3). A first elastic member (9) is connected between the stripping plate (5) and the back plate (3).

4. The steel frame automated production line according to claim 1, characterized in that: The positioning seat (2) is provided with an active groove (15) for the linkage seat (11) and the synchronization block (13) to move, a second elastic member (16) is connected between the inner wall of the active groove (15) and the linkage seat (11), a climbing block (17) is provided on the side wall of the synchronization block (13), and a climbing groove (18) matching the climbing block (17) is provided on the inner wall of the active groove (15).

5. The steel frame automated production line according to claim 4, characterized in that: The flip member (10) is coaxially connected to a gear (19); a rack (20) matching the gear (19) is hingedly connected to the linkage seat (11); the rack (20) has a first state in which it can form meshing transmission with the gear (19) and a second state in which it avoids the gear (19) and does not transmit during the rotation stroke; a switching component for controlling the state switching of the rack (20) is provided on the linkage seat (11); the switching component controls the rack (20) to switch from the first state to the second state when the punch (4) ends the punching action of extending toward the workpiece.

6. The steel frame automated production line according to claim 5, characterized in that: The switching assembly comprises a slide groove (21) arranged on the linkage seat (11), a slider (22) being elastically slidably arranged in the slide groove (21), a linkage groove (23) being arranged on the rack (20), a linkage pin (24) being slidably arranged in the linkage groove (23), the linkage pin (24) being connected to the slider (22) via a second connecting member (25), one end of the slide groove (21) pointing to the back plate (3) and being open, and a top block (26) corresponding to the slide groove (21) being arranged on the back plate (3).

7. The steel frame automated production line according to claim 6, characterized in that: The slider (22) is provided with an elastic groove (27), and a limiting member (28) is elastically connected to the elastic groove (27). The limiting member (28) slides through the side wall of the slider (22), and a limiting hole (29) matching the limiting member (28) is provided on the side wall of the linkage seat (11). When the punch (4) ends the punching action of extending toward the workpiece, the top block (26) pushes the slider (22) to move to the limiting member (28) corresponding to the limiting hole (29).

8. The steel frame automated production line according to claim 5, characterized in that: The flipping member (10) is elastically rotationally connected to the positioning seat (2) and is unidirectionally transmission connected to the gear (19).

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