Mechanical interlocking type fixed-length material blocking and cutting device for cold bending production line

Abstract

The invention relates to the technical field of fixed-length material blocking and cutting, and particularly discloses a mechanical interlocking type fixed-length material blocking and cutting device for a cold bending production line, which comprises a base plate, the top of the base plate is fixedly connected with a support frame, one side of the support frame is fixedly connected with a third driving motor, and the other side of the support frame is fixedly connected with a second driving motor. A driving shaft of the third driving motor penetrates through the supporting frame and is fixedly connected with a rotating roller, the part, located on one side of the supporting frame, of the top of the base plate is fixedly connected with a cutting device, the part, located on one side of the cutting device, of the top of the base plate is fixedly connected with a fixed-length material blocking device, and the cutting device comprises a bottom plate; scrap iron collecting devices are fixedly connected to the portions, located on the two sides of the supporting block, of the top of the bottom plate, and first elastic telescopic rod fixing ends are fixedly connected to the portions, located on the two sides of the scrap iron collecting devices, of the bottom plate. The mechanical interlocking type fixed-length material blocking and cutting-off device for the cold bending production line achieves the purposes of high cutting-off precision and simple setting of the fixed length.

Description

Technical Field

[0001] This invention relates to the field of fixed-length material blocking and cutting technology, specifically to a mechanically interlocked fixed-length material blocking and cutting device for a cold bending production line. Background Technology

[0002] A cold bending production line is a plastic forming equipment that bends metal sheets and strips into profiles with specific cross-sections using multiple forming rolls. In a cold bending production line, the length-fixing stop and cutting device are key components, their performance directly affecting product accuracy and production efficiency. Currently, the common method for cutting cold-bent profiles is to calculate the length using a measuring wheel. When the set length is reached, the control unit drives the cutting device to cut the profile. However, this method has several drawbacks: First, the measuring wheel is prone to slipping when rolling on the smooth surface of the cold-bent profile, especially when the material is oiled, leading to an error of several millimeters and affecting cutting accuracy. Second, long-term rolling of the measuring wheel causes circumferential wear, reducing its diameter and further increasing the error. Third, vibrations during the operation of the rolling mill can cause the measuring wheel to temporarily detach from the profile surface, also affecting measuring accuracy. These problems combined lead to unstable cutting accuracy.

[0003] Limit switch type control devices are simple in structure and low in cost, but have poor control accuracy; mechanical baffle type control devices have high cutting length accuracy and reliable operation, but it is difficult to change the set length; CNC control devices have high cutting length accuracy, convenient change of the set length, and easy to realize automated operation, but they are expensive and complex to maintain. Summary of the Invention

[0004] To solve the above technical problems, the present invention is achieved through the following technical solution: a mechanically interlocked fixed-length stop and cutting device for a cold bending production line, comprising a base plate, a support frame fixedly connected to the top of the base plate, a third drive motor fixedly connected to one side of the support frame, a drive shaft of the third drive motor passing through the support frame and fixedly connected to a rotating roller, a cutting device fixedly connected to the portion of the top of the base plate located on one side of the support frame, and a fixed-length stop device fixedly connected to the portion of the top of the base plate located on one side of the cutting device. The cutting device includes a base plate, a support block fixedly connected to the top of the base plate, and iron filings collection devices fixedly connected to both sides of the top of the base plate located on the support block. A first elastic telescopic rod fixed end is fixedly connected to the top of the base plate located on one side of the iron filings collection device. A first connecting plate is fixedly connected to the movable end of the first elastic telescopic rod. A second support plate is fixedly connected to the bottom of the first connecting plate. A cutting machine is fixedly connected to one side of the second support plate. A second elastic telescopic rod movable end is fixedly connected to the top of the base plate located on one side of the elastic telescopic rod. A first column is fixedly connected to the fixed end of the second elastic telescopic rod. A first torsion spring is sleeved on the first column. A first cover is rotatably connected to the top of the second elastic telescopic rod. A filling block is fixedly connected to the top of the first cover. A support column is fixedly connected to the top of the base plate surrounding one side of the second elastic telescopic rod. A third support plate is fixedly connected to the top of the support column. A hydraulic telescopic rod fixed end is fixedly connected to the bottom of the third support plate. A pressing block is fixedly connected to the movable end of the hydraulic telescopic rod.

[0005] Preferably, the bottom plate is fixedly connected to the top of the substrate, and the filling block is slidably connected to the top of the first connecting plate.

[0006] Preferably, one end of the first torsion spring is fixedly connected to the top of the second elastic telescopic rod, and the end of the first torsion spring away from the second elastic telescopic rod is fixedly connected to the inner wall of the first cover. The third drive motor drives the rotating roller to rotate continuously, pushing the cold-bent material along the conveying direction of the production line. When the end of the material contacts the blocking surface of the fixed-length stop device, the push rod position is immediately locked to achieve rigid stopping and precise positioning of the material. At this time, the hydraulic telescopic rod receives the control signal and extends quickly, pushing the third support plate and the cutting machine to move down as a whole. The moment the high-speed blade of the cutting machine contacts the material, the iron chip collection devices on both sides start negative pressure adsorption simultaneously, quickly guiding the splashed metal chips into the dust collection chamber.

[0007] Preferably, the scrap collection device includes a collection box, an inlet on one side of the collection box, a collection container fixedly connected to the bottom of the inner wall of the collection box, the inlet of the collection container being connected to a first feeding pipe, the end of the first feeding pipe away from the collection container being connected to an air pump outlet, the air pump inlet being connected to a second feeding pipe, and the end of the second feeding pipe away from the air pump being connected to a feeding trough.

[0008] Preferably, the collection box is fixedly connected to the top of the base plate, and the feed chute is fixedly connected to the inner wall of the collection box. When the air pump starts, it generates negative pressure, forcefully drawing in metal shavings generated during material cutting by the cutting machine through the second feed pipe from the feed chute. The drawn-in shavings are then transported by the airflow through the first feed pipe to the collection box for centralized storage. The design of the feed inlet facilitates observation of the collection status and subsequent cleaning and maintenance. The entire collection process is synchronized with the cutting action, making it highly efficient and automated. After collection is complete, the air pump stops running, and the metal shavings are reliably collected in the collection box, effectively preventing shavings from splashing or accumulating, ensuring operational safety and equipment cleanliness.

[0009] Preferably, the fixed-length stop device includes a bracket, a groove is provided on one side of the bracket, a first drive motor is fixedly connected to the side of the bracket, the drive shaft of the first drive motor passes through the bracket and is fixedly connected to a first screw, a connecting block is sleeved and threadedly connected to the first screw, a slider is fixedly connected to one side of the connecting block, the slider is disposed inside the groove and slidably connected to the inner wall of the groove, a connecting rod is fixedly connected to the side of the connecting block away from the slider, a second column is fixedly connected to the end of the connecting rod away from the connecting block, a second torsion spring is sleeved on the second column, a stop rod is fixedly connected to one end of the second torsion spring, a stop rod is rotatably connected to the end of the connecting rod away from the connecting block via a bearing, a buffer baffle is fixedly connected to one end of the stop rod, a second connecting plate is fixedly connected to the part of the stop rod away from the buffer baffle, a first support plate is fixedly connected to one side of the second connecting plate, a second drive motor is fixedly connected to one side of the first support plate, the drive shaft of the second drive motor passes through the first support plate and is fixedly connected to a second screw, a push rod is movably connected to the top of the second connecting plate via a slide rail, and a rack is fixedly connected to one side of the push rod.

[0010] Preferably, the bracket is fixedly connected to the top of the substrate, and the connecting block is slidably connected to one side of the bracket.

[0011] Preferably, the end of the second torsion spring away from the stop lever is fixedly connected to the connecting rod, the second screw is meshed with the rack, and one side of the second connecting plate is fixedly connected to one side of the push rod. This fixed-length material stop device achieves precise positioning and rigid blocking of the material through a dual-motor drive and mechanical interlocking structure: the stop lever flexibly contacts the end face of the material under the buffering effect of the second torsion spring, avoiding material deformation or equipment damage caused by rigid impact; the interlocking mechanism formed by the push rod and the rack forms a rigid constraint at the moment of material stop, effectively overcoming the displacement deviation caused by the material conveying inertia, and keeping the cutting length error within acceptable limits; each moving part achieves rapid and synchronous reset through screw transmission and torsion spring assistance, with a small material stop release response time, significantly shortening the process interval and ensuring efficient and continuous operation of the production line.

[0012] The buffer baffle includes a stop block, a third elastic telescopic rod fixed end fixedly connected to one side of the stop block, a second cover fixedly connected to the movable end of the third elastic telescopic rod, a buffer pad fixedly connected to one side of the second cover, and a stop block fixedly connected to one end of the stop rod. Since the buffer baffle effectively reduces the damage to the device caused by the impact of the profile, the service life of each component of the fixed length material blocking device is extended, the frequency of maintenance and replacement of components is reduced, and the equipment maintenance cost of the enterprise is reduced.

[0013] This invention provides a mechanically interlocked fixed-length stop and cutting device for a cold bending production line. It has the following advantages: 1. This mechanically interlocked fixed-length stop and cutting device for a cold bending production line is equipped with a cutting device. First, the fixed-length stop device can accurately position the set length of the profile, ensuring the consistency of dimensions for each cut and improving the precision and quality of product processing. Second, through the cooperation of the hydraulic telescopic rod and the extrusion block, the profile is firmly fixed before cutting, effectively preventing displacement of the profile during cutting and further improving cutting stability. The design of the first and second elastic telescopic rods allows the cutting machine to adaptively adjust according to changes in the shape and position of the profile, ensuring cutting flexibility and adaptability. Finally, the iron filings collection device not only improves the working environment but also avoids the potential impact of iron filings on equipment operation, extending the service life of the equipment.

[0014] 2. This mechanically interlocked fixed-length stop and cutting device for a cold bending production line is equipped with a scrap collection device, which significantly improves the hygiene of the workshop. In traditional cold bending production, scrap generated during cutting flies everywhere, making the work area dirty and messy, and increasing the workload for workers. The scrap collection device can collect the scrap in a timely manner, keeping the work surface and surrounding environment clean, creating a more comfortable and safe working environment for workers, and helping to improve worker efficiency.

[0015] 3. This mechanically interlocked fixed-length stop and cutter for a cold bending production line is equipped with a fixed-length stop device. This device can accurately stop the profile at a set length position, ensuring that the length of the profile cut each time is consistent. This greatly improves the dimensional accuracy of product processing, reduces the defect rate caused by inconsistent lengths, and improves the overall quality of the product. Through the cooperation of the first drive motor and the second drive motor, the position of the buffer baffle can be easily and quickly adjusted to adapt to the fixed-length stop requirements of different specifications of profiles. There is no need for large-scale disassembly and modification of the device, saving time and labor costs and improving production efficiency. The buffer structure composed of the second torsion spring and the buffer baffle effectively reduces the impact force of the profile on the stop bar, avoiding problems such as deformation and damage of the stop bar caused by long-term strong impact, extending the service life of the fixed-length stop device, and reducing the maintenance and replacement costs of the equipment.

[0016] 4. This mechanically interlocked fixed-length stop and cutting device for a cold bending production line is equipped with a buffer baffle. Because the buffer baffle effectively reduces damage to the device from profile impact, it extends the service life of each component of the fixed-length stop device, reduces the frequency of maintenance and replacement, and lowers the company's equipment maintenance costs. In conclusion, the design of the buffer baffle plays a crucial role in the fixed-length stop device, bringing significant economic benefits and production advantages to the company. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the mechanically interlocked fixed-length material stop and cutting device of the cold bending production line of the present invention. Figure 2 This is a side view of the mechanically interlocked fixed-length stop and cutting device of the cold bending production line of the present invention. Figure 3 This is a schematic diagram of the cutting device structure of the present invention; Figure 4 This is a schematic diagram of the side structure of the cutting device of the present invention; Figure 5 This is a schematic diagram of the connection structure of the iron filings collection device of the present invention; Figure 6 This is a schematic diagram of the iron filings collection device of the present invention; Figure 7 This is a schematic diagram of the fixed-length material stop device of the present invention; Figure 8 This is a partially enlarged structural diagram of the present invention (A). Figure 9 This is a side view of the fixed-length material stop device of the present invention; Figure 10 This is a schematic diagram of the buffer baffle structure of the present invention; In the diagram: 1. Base plate; 2. Support frame; 3. Third drive motor; 4. Rotating roller; 5. Cutting device; 51. Base plate; 52. Support block; 53. Scrap collection device; 531. Collection box; 532. Collection container; 533. First feeding pipe; 534. Air pump; 535. Second feeding pipe; 536. Feed chute; 54. First elastic telescopic rod; 55. First connecting plate; 56. Second support plate; 57. Cutting machine; 58. Second elastic telescopic rod; 59. First column; 510. First torsion spring; 511. First cover; 512. Filling block; 513. Support column; 514. Third support 515. Support plate; 516. Hydraulic telescopic rod; 6. Extrusion block; 6. Fixed-length stop device; 61. Bracket; 62. Slide groove; 63. First drive motor; 64. First screw; 65. Connecting block; 66. Slider; 67. Connecting rod; 68. Second column; 69. Second torsion spring; 610. Stop bar; 611. Buffer baffle; 6111. Stop block; 6112. Third elastic telescopic rod; 6113. Second cover; 6114. Buffer pad; 612. Push rod; 613. Rack; 614. Second connecting plate; 615. First support plate; 616. Second drive motor; 617. Second screw. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] For the first embodiment, please refer to... Figures 1-4 The present invention provides a technical solution: a mechanically interlocked fixed-length material stop and cutting device for a cold bending production line, comprising a base plate 1, a support frame 2 fixedly connected to the top of the base plate 1, a third drive motor 3 fixedly connected to one side of the support frame 2, a drive shaft of the third drive motor 3 passing through the support frame 2 and fixedly connected to a rotating roller 4, a cutting device 5 fixedly connected to the part of the top of the base plate 1 located on one side of the support frame 2, and a fixed-length material stop device 6 fixedly connected to the part of the top of the base plate 1 located on one side of the cutting device 5. The cutting device 5 includes a base plate 51, a support block 52 fixedly connected to the top of the base plate 51, and a chip collecting device 53 fixedly connected to both sides of the top of the base plate 51 located on the side of the chip collecting device 53. A fixed end of a first elastic telescopic rod 54 is fixedly connected to the top of the base plate 51 located on one side of the chip collecting device 53. A first connecting plate 55 is fixedly connected to the movable end of the first elastic telescopic rod 54. A second support plate 56 is fixedly connected to the bottom of the first connecting plate 55. A cutting machine 57 is fixedly connected to one side of the second support plate 56. A second elastic telescopic rod is fixedly connected to the top of the base plate 51 located on one side of the first elastic telescopic rod 54. At the movable end of the second elastic telescopic rod 58, a first column 59 is fixedly connected to the fixed end of the second elastic telescopic rod 58. A first torsion spring 510 is sleeved on the first column 59. A first cover 511 is rotatably connected to the top of the second elastic telescopic rod 58. A filling block 512 is fixedly connected to the top of the first cover 511. A support column 513 is fixedly connected to the top of the bottom plate 51 around one side of the second elastic telescopic rod 58. A third support plate 514 is fixedly connected to the top of the support column 513. A fixed end of the third support plate 514 is fixedly connected to the bottom of the hydraulic telescopic rod 515. A pressing block 516 is fixedly connected to the movable end of the hydraulic telescopic rod 515.

[0020] The base plate 51 is fixedly connected to the top of the substrate 1, and the filling block 512 is slidably connected to the top of the first connecting plate 55.

[0021] One end of the first torsion spring 510 is fixedly connected to the top of the second elastic telescopic rod 58, and the end of the first torsion spring 510 away from the second elastic telescopic rod 58 is fixedly connected to the inner wall of the first cover 511.

[0022] In use, the third drive motor 3 is first started to drive the rotating roller 4 to rotate and transport the material on the cold bending production line. When the material moves to the fixed-length stop device 6, the stop device automatically locks the material position to ensure fixed-length accuracy. Subsequently, the hydraulic telescopic rod 515 drives the third support plate 514 to move downward, driving the cutting machine 57 to perform the cutting operation. During this process, the first elastic telescopic rod 54 and the second elastic telescopic rod 58 provide elastic buffering. The filling block 512 is slidably connected to the top of the first connecting plate 55 to achieve smooth movement. At the same time, the first torsion spring 510 is fixedly connected to the inner wall of the first cover 511 to assist the rotation and reset of the first cover 511, ensuring the stability of the cutting process. Meanwhile, the iron chip collection device 53 starts to work, effectively collecting the metal chips generated during the cutting process and keeping the working area clean. The material feeding device 6 adopts a mechanical interlock structure. When the material arrives at the predetermined position, the push rod 612 pushes the filling block 512 to the predetermined position to achieve precise positioning and rigid blocking of the material, preventing displacement deviation caused by feeding inertia. After cutting, the hydraulic telescopic rod 515 resets and lifts the third support plate 514 and the cutting machine 57. The first elastic telescopic rod 54 drives the cutting machine 57 to retract smoothly to the initial height. The second elastic telescopic rod 58, with its own elasticity and the assistance of the first torsion spring 510, pushes the first cover 511 and the filling block 512 to reset, so that the whole device returns to the standby state. At this time, the interlock mechanism of the fixed-length material blocking device 6 is unlocked, and the rotating roller 4 can continue to convey the next section of material, realizing efficient, continuous, fixed-length cutting operation of the cold bending production line. After cutting, each component resets under the action of the elastic element, ready for the next cycle.

[0023] Second embodiment, please refer to Figures 1-6 Based on the first embodiment, the present invention provides a technical solution: the iron filings collection device 53 includes a collection box 531, a feed inlet 537 is provided on one side of the collection box 531, a collection container 532 is fixedly connected to the bottom of the inner wall of the collection box 531, the feed inlet of the collection container 532 is connected to a first feeding pipe 533, the end of the first feeding pipe 533 away from the collection container 532 is connected to the air outlet of an air pump 534, the air inlet of the air pump 534 is connected to a second feeding pipe 535, and the end of the second feeding pipe 535 away from the air pump 534 is connected to a feeding trough 536.

[0024] The collection box 531 is fixedly connected to the top of the base plate 51, and the feed chute 536 is fixedly connected to the inner wall of the collection box 531.

[0025] During operation, the air pump 534 starts to generate negative pressure, which forcefully draws the metal shavings generated when the cutting machine 57 cuts the material from the feed chute 536 through the second feed pipe 535. The drawn-in shavings are then transported by the airflow through the first feed pipe 533 to the collection box 532 for centralized storage. The design of the feed port 537 facilitates observation of the collection status and subsequent cleaning and maintenance. The entire collection process is synchronized with the cutting action, which is efficient and automated. After collection is completed, the air pump 534 stops running, and the iron filings are reliably collected in the collection box 532, effectively preventing shavings from splashing or accumulating. The entire collection process is seamlessly connected with the cutting process without manual intervention, further improving the automation level and operational continuity of the cold bending production line. It effectively avoids shavings splashing and contaminating the working environment and equipment, ensuring operational safety and equipment cleanliness, and preparing for the next cutting cycle.

[0026] Third embodiment, please refer to Figures 1-9 Based on the second embodiment, the present invention provides a technical solution: the fixed-length stop device 6 includes a bracket 61, a groove 62 is provided on one side of the bracket 61, a first drive motor 63 is fixedly connected to the side of the bracket 61, the drive shaft of the first drive motor 63 passes through the bracket 61 and is fixedly connected to a first screw 64, a connecting block 65 is sleeved on the first screw 64 and threadedly connected to it, a slider 66 is fixedly connected to one side of the connecting block 65, the slider 66 is disposed inside the groove 62 and slidably connected to the inner wall of the groove 62, a connecting rod 67 is fixedly connected to the side of the connecting block 65 away from the slider 66, a second column 68 is fixedly connected to the end of the connecting rod 67 away from the connecting block 65, and a second torsion spring 69 is sleeved on the second column 68. One end of the second torsion spring 69 is fixedly connected to a stop lever 610. One side of the stop lever 610 is rotatably connected to the end of the connecting rod 67 away from the connecting block 65 via a bearing. One end of the stop lever 610 is fixedly connected to a buffer baffle 611. The part of the stop lever 610 away from the buffer baffle 611 is fixedly connected to a second connecting plate 614. One side of the second connecting plate 614 is fixedly connected to a first support plate 615. One side of the first support plate 615 is fixedly connected to a second drive motor 616. The drive shaft of the second drive motor 616 passes through the first support plate 615 and is fixedly connected to a second screw 617. The top of the second connecting plate 614 is movably connected to a push rod 612 via a slide rail. One side of the push rod 612 is fixedly connected to a rack 613.

[0027] The bracket 61 is fixedly connected to the top of the substrate 1, and the connecting block 65 is slidably connected to one side of the bracket 61.

[0028] The end of the second torsion spring 69 away from the stop lever 610 is fixedly connected to the connecting rod 67, the second screw 617 is engaged with the rack 613, and one side of the second connecting plate 614 is fixedly connected to one side of the push rod 612.

[0029] In use, the first drive motor 63 is started, driving the first screw 64 to rotate, which in turn moves the connecting block 65 horizontally along the slide groove 62, thereby pushing the connecting rod 67 and the stop rod 610 to move in the material conveying direction. When the buffer baffle 611 contacts the end face of the material that has reached the predetermined position, the stop rod 610 rotates around the second column 68 under the reaction force of the material, compressing the second torsion spring 69 to store energy. This pushes the push rod 612 to move horizontally. The front end of the push rod 612 contacts the side wall of the filling block 512, applying a pushing force, forcing the filling block 512 to rotate around the first cover 511 until the filling block 512 is precisely pushed in and locked in the predetermined position, namely the blocking position below the third support plate 514. At this time, the filling block 512 forms a rigid block, and the end of the material is held by the buffer baffle 611. The interlocking structure formed by the push rod 612 and the filling block 512 completely locks the material position. The position locking signal triggers the hydraulic telescopic rod 515 to move, driving the cutting machine 57 to perform cutting. After precisely locking the material position and completing the fixed-length stop, the cutting device 5 performs the cutting operation. After the cutting process is completed, the first drive motor 63 reverses, driving the connecting block 65 and the stop bar 610 to return to the initial position horizontally. At the same time, the compressed second torsion spring 69 releases its elasticity, and the auxiliary stop bar 610 quickly rotates around the second column 68 to reset to the horizontal standby posture. The whole process realizes the mechanical linkage and precise control of the material blocking, locking and resetting actions.

[0030] For the fourth embodiment, please refer to [link / reference]. Figures 1-10 Based on the third embodiment, the present invention provides a technical solution: the buffer baffle 611 includes a stop block 6111, a fixed end of a third elastic telescopic rod 6112 is fixedly connected to one side of the stop block 6111, a second cover 6113 is fixedly connected to the movable end of the third elastic telescopic rod 6112, a buffer pad 6114 is fixedly connected to one side of the second cover 6113, and the stop block 6111 is fixedly connected to one end of the stop rod 610.

[0031] In use, when the buffer baffle 611 contacts the material end face, the buffer pad 6114 absorbs the impact force first. At the same time, the movable end of the third elastic telescopic rod 6112 is compressed and contracts, pushing the second cover 6113 to retract smoothly along the direction of the stop block 6111, forming an elastic buffer. This process effectively disperses the material impact force, avoiding material deformation or surface damage caused by rigid contact. After cutting, the third elastic telescopic rod 6112 releases its stored energy, pushing the second cover 6113 and the buffer pad 6114 back to their initial positions, preparing for the next material stopping action. The entire buffer stroke remains linear and stable through the guiding effect of the second cover 6113, ensuring that the material stopping accuracy is not affected by elastic deformation.

[0032] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A mechanically interlocked fixed-length stop and cutting device for a cold bending production line, comprising a base plate (1), characterized in that: A support frame (2) is fixedly connected to the top of the substrate (1), a third drive motor (3) is fixedly connected to one side of the support frame (2), the drive shaft of the third drive motor (3) passes through the support frame (2) and is fixedly connected to a rotating rod (4), a cutting device (5) is fixedly connected to the part of the top of the substrate (1) located on one side of the support frame (2), and a fixed length stop device (6) is fixedly connected to the part of the top of the substrate (1) located on one side of the cutting device (5). The cutting device (5) includes a base plate (51), a support block (52) is fixedly connected to the top of the base plate (51), and iron filings collection devices (53) are fixedly connected to the portions of the top of the base plate (51) located on both sides of the support block (52). A fixed end of a first elastic telescopic rod (54) is fixedly connected to the portion of the top of the base plate (51) located on one side of the iron filings collection device (53). A first connecting plate (55) is fixedly connected to the movable end of the first elastic telescopic rod (54). A second support plate (56) is fixedly connected to the bottom of the first connecting plate (55). A cutting machine (57) is fixedly connected to one side of the second support plate (56). A second elastic telescopic rod is fixedly connected to the portion of the top of the base plate (51) located on one side of the first elastic telescopic rod (54). (58) The movable end of the second elastic telescopic rod (58) is fixedly connected to a first column (59), and a first torsion spring (510) is sleeved on the first column (59). The top of the second elastic telescopic rod (58) is rotatably connected to a first cover (511), and a filling block (512) is fixedly connected to the top of the first cover (511). The part of the top of the bottom plate (51) located on one side of the second elastic telescopic rod (58) is fixedly connected to a support column (513). The top of the support column (513) is fixedly connected to a third support plate (514). The bottom of the third support plate (514) is fixedly connected to a fixed end of a hydraulic telescopic rod (515), and the movable end of the hydraulic telescopic rod (515) is fixedly connected to a pressing block (516).

2. The mechanically interlocked fixed-length stop and cutting device for a cold bending production line according to claim 1, characterized in that: The bottom plate (51) is fixedly connected to the top of the base plate (1), and the filling block (512) is slidably connected to the top of the first connecting plate (55).

3. The mechanically interlocked fixed-length stop and cutting device for a cold bending production line according to claim 1, characterized in that: One end of the first torsion spring (510) is fixedly connected to the top of the second elastic telescopic rod (58), and the end of the first torsion spring (510) away from the second elastic telescopic rod (58) is fixedly connected to the inner wall of the first cover (511).

4. The mechanically interlocked fixed-length stop and cutting device for a cold bending production line according to claim 1, characterized in that: The scrap collection device (53) includes a collection box (531), with an inlet (537) on one side of the collection box (531). A collection container (532) is fixedly connected to the bottom of the inner wall of the collection box (531). The inlet of the collection container (532) is connected to a first feeding pipe (533). The end of the first feeding pipe (533) away from the collection container (532) is connected to the outlet of an air pump (534). The inlet of the air pump (534) is connected to a second feeding pipe (535). The end of the second feeding pipe (535) away from the air pump (534) is connected to a feeding trough (536).

5. A mechanically interlocked fixed-length stop and cutting device for a cold bending production line according to claim 4, characterized in that: The collection box (531) is fixedly connected to the top of the base plate (51), and the feed trough (536) is fixedly connected to the inner wall of the collection box (531).

6. The mechanically interlocked fixed-length stop and cutting device for a cold bending production line according to claim 1, characterized in that: The fixed-length stop device (6) includes a bracket (61), a groove (62) is provided on one side of the bracket (61), a first drive motor (63) is fixedly connected to the side of the bracket (61), the drive shaft of the first drive motor (63) passes through the bracket (61) and is fixedly connected to a first screw (64), a connecting block (65) is sleeved on the first screw (64) and threadedly connected to it, a slider (66) is fixedly connected to one side of the connecting block (65), the slider (66) is disposed inside the groove (62) and is slidably connected to the inner wall of the groove (62), a connecting rod (67) is fixedly connected to the side of the connecting block (65) away from the slider (66), a second column (68) is fixedly connected to the end of the connecting rod (67) away from the connecting block (65), a second torsion spring (69) is sleeved on the second column (68), and the second torsion spring (69) is... A stop bar (610) is fixedly connected to one end of a spring (69). One side of the stop bar (610) is rotatably connected to the end of a connecting rod (67) away from the connecting block (65) via a bearing. A buffer baffle (611) is fixedly connected to one end of the stop bar (610). A second connecting plate (614) is fixedly connected to the part of the stop bar (610) away from the buffer baffle (611). A first support plate (615) is fixedly connected to one side of the second connecting plate (614). A second drive motor (616) is fixedly connected to one side of the first support plate (615). The drive shaft of the second drive motor (616) passes through the first support plate (615) and is fixedly connected to a second screw (617). A push rod (612) is slidably connected to the top of the second connecting plate (614) via a slide rail. A rack (613) is fixedly connected to one side of the push rod (612).

7. A mechanically interlocked fixed-length stop and cutting device for a cold bending production line according to claim 6, characterized in that: The bracket (61) is fixedly connected to the top of the base plate (1), and the connecting block (65) is slidably connected to one side of the bracket (61).

8. A mechanically interlocked fixed-length stop and cutting device for a cold bending production line according to claim 6, characterized in that: The end of the second torsion spring (69) away from the stop lever (610) is fixedly connected to the connecting rod (67), the second screw (617) is meshed with the rack (613), and one side of the second connecting plate (614) is fixedly connected to one side of the push rod (612).

9. A mechanically interlocked fixed-length stop and cutting device for a cold bending production line according to claim 8, characterized in that: The buffer baffle (611) includes a stop block (6111), a fixed end of a third elastic telescopic rod (6112) is fixedly connected to one side of the stop block (6111), a second cover (6113) is fixedly connected to the movable end of the third elastic telescopic rod (6112), a buffer pad (6114) is fixedly connected to one side of the second cover (6113), and the stop block (6111) is fixedly connected to one end of the stop rod (610).

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