An automatic clamping and feeding device for cold-rolled edge trimming material

Abstract

This utility model relates to the field of strip steel processing technology, and provides an automatic clamping and feeding device for cold-rolled edge trimming material. The device includes a frame; a reciprocating moving device mounted on the frame; and a clamping device mounted on the reciprocating moving device. The clamping device is arranged to move between a cutting device and a winding device under the action of the reciprocating moving device, clamping the edge trimming material and bringing it closer to the winding device. The frame provides a mounting foundation for each component, ensuring the overall stability of the device. The reciprocating moving device enables the clamping device to automatically move back and forth between the cutting and winding devices, eliminating the need for manual intervention in the edge trimming process. The clamping device, through the swinging cooperation of the first and second clamping rods, forms an openable clamping space, automatically receiving and clamping the cut edge trimming material. This structure replaces manual operation with mechanical automation, avoiding operator contact with hot and sharp edge trimming material and eliminating safety hazards such as burns and cuts.

Description

Technical Field

[0001] The embodiments of this utility model relate to the field of strip steel processing technology, specifically to an automatic clamping and feeding device for cold-rolled trimmed edge material. Background Technology

[0002] In the production of cold-rolled strip steel, edge trimming is an important process. Its purpose is to remove excess material from both sides of the strip steel to obtain strip steel products that meet dimensional requirements. During the edge trimming process, the trimmed material needs to be collected and processed, usually by using a coiling machine to coil the material back together.

[0003] Currently, in existing cold-rolled strip trimming and scrap handling technologies, when the trimmed strip breaks during transport, the lack of an effective automated handling mechanism necessitates manual operation by operators to place the broken ends onto the coiler for continued coiling. However, this manual operation presents significant safety hazards. In actual production environments, the trimmed strip may be quite hot and have sharp edges. Operators are prone to burns, cuts, and other injuries while manually placing the trimmed ends near the equipment, posing a threat to their health. Furthermore, manual operation requires slowing down the process, reducing production efficiency and increasing costs.

[0004] To address the aforementioned issues, some attempts have been made in existing technologies, such as using simple mechanical auxiliary devices to guide edge materials. However, these devices have a low degree of automation and are not ideal for handling edge materials after breakage. They still cannot completely eliminate human intervention, and the safety hazards have not been fundamentally resolved.

[0005] Therefore, how to provide a cold-rolled edge trimming device that can automatically clamp and feed the edge material after it breaks without manual operation, thereby eliminating safety hazards and improving production efficiency, has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0006] To overcome the above-mentioned defects, the present invention provides an automatic clamping and feeding device for cold-rolled edge trimming, which solves the technical problem in the prior art that when the edge trimming of the strip breaks, the edge trimming end needs to be manually placed on the coiler, which poses a safety hazard.

[0007] According to one aspect, at least one embodiment of the present invention provides an automatic clamping and feeding device for cold-rolled strip edge material, used to clamp the edge material cut by the cutting device and convey it to the coiling device, comprising:

[0008] Frame;

[0009] A reciprocating moving device, wherein the reciprocating moving device is mounted on the frame;

[0010] A clamping device is disposed on the reciprocating moving device and is arranged to be able to move between the cutting device and the winding device under the action of the reciprocating moving device, for clamping the edge material and driving the edge material closer to the winding device.

[0011] The clamping device includes:

[0012] Mounting base, the mounting base being disposed on the reciprocating moving device;

[0013] A first clamping rod is disposed on the mounting base, and the extension direction of the first clamping rod is perpendicular to the conveying direction of the edge material;

[0014] The second clamping rod is oscillatingly mounted on the first clamping rod and located below the cutting device. A clamping space is formed between the second clamping rod and the first clamping rod. The clamping space is used to receive the edge material cut by the cutting device. The second clamping rod is arranged so that it can clamp the edge material in the clamping space with the first clamping rod after oscillation.

[0015] For example, in an automatic clamping and feeding device for cold-rolled edge trimming provided in at least one embodiment of this utility model, a torsion spring is provided at the connection between the first clamping rod and the second clamping rod. The torsion spring is used to provide a force for the second clamping rod to swing toward the first clamping rod, so that the clamping space clamps the edge trimming material. A rope shaft is rotatably connected to the mounting base. A rope is connected between the second clamping rod and the rope shaft. The rope contacts the side of the first clamping rod away from the clamping space. The rope shaft is arranged to be wound around the rope after rotation, so that the second clamping rod swings in the opposite direction against the elastic force of the torsion spring, so that the clamping space releases the edge trimming material.

[0016] For example, in an automatic clamping and feeding device for cold-rolled trimmed scrap provided in at least one embodiment of the present invention, the first clamping rod has a through hole along its length, and the rope passes through the through hole.

[0017] For example, in an automatic clamping and feeding device for cold-rolled edge trimming provided in at least one embodiment of the present invention, the first clamping rod has a limiting groove with an opening facing the clamping space, and the second clamping rod has a limiting protrusion extending into the clamping space. The limiting groove and the limiting protrusion are arranged such that after the second clamping rod swings close to the first clamping rod, the limiting protrusion moves into the limiting groove, so as to deform the edge material located in the clamping space.

[0018] For example, in an automatic clamping and feeding device for cold-rolled edge trimming provided in at least one embodiment of the present invention, a push plate is provided in the limiting groove for pushing the deformed edge trimming out of the limiting groove, and an elastic member is provided between the bottom wall of the limiting groove and the push plate. The elastic member is used to elastically push the push plate so that the push plate can push the deformed edge trimming out of the limiting groove.

[0019] For example, in an automatic clamping and feeding device for cold-rolled trimmed scrap provided in at least one embodiment of this utility model, the reciprocating moving device includes:

[0020] A first rotating shaft is rotatably mounted on the frame near the cutting device.

[0021] The second rotating shaft is rotatably mounted on the end of the frame near the winding device.

[0022] A conveyor belt, which is wound around the first rotating shaft and the second rotating shaft, and the mounting base is disposed on the conveyor belt;

[0023] A rotation drive is provided on the frame, and the output end of the rotation drive is connected to the first rotating shaft. The rotation drive is arranged to rotate and drive the first rotating shaft to rotate, so that the conveyor belt can drive the mounting base to move between the cutting device and the winding device.

[0024] For example, in an automatic clamping and feeding device for cold-rolled trimmed scrap provided in at least one embodiment of this utility model, the reciprocating moving device further includes:

[0025] A protective shell is connected to the frame and covers the outside of the conveyor belt. A guide groove is provided on the protective shell, and one end of the first clamping rod and the second clamping rod both extend out of the protective shell through the guide groove.

[0026] For example, in an automatic clamping and feeding device for cold-rolled edge trimming provided in at least one embodiment of the present invention, a transition plate is provided on the side wall of the protective shell near the winding device, which is directed toward the winding device. The transition plate is used to guide the edge trimming material clamped by the clamping device to the winding device.

[0027] For example, in an automatic clamping and feeding device for cold-rolled edge trimming provided in at least one embodiment of the present invention, a cutting blade is vertically oscillatingly connected to the transition plate, and the cutting blade is used to cut the edge material located on the transition plate; the side wall of the transition plate is provided with an oscillating drive member for driving the cutting blade to oscillate.

[0028] For example, in an automatic clamping and feeding device for cold-rolled edge trimming provided in at least one embodiment of the present invention, the protective shell has a guide plate on one side wall near the cutting device. The guide plate is located below the cutting device and is used to guide the edge material into the clamping space.

[0029] The beneficial effects of the embodiments of this utility model are as follows:

[0030] In this invention, the frame provides the mounting foundation for all components, ensuring the overall stability of the device. The reciprocating movement device enables the clamping device to automatically move back and forth between the cutting and winding devices, eliminating the need for manual intervention in the edge material transfer process. The clamping device, through the swinging cooperation of the first and second clamping rods, forms an openable clamping space, automatically receiving and clamping the cut edge material. Especially when the edge material breaks, it can quickly grasp the broken end and transfer it to the winding device. This structure replaces manual operation with mechanical automation, avoiding operator contact with hot and sharp edge material and eliminating safety hazards such as burns and cuts. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of an automatic clamping and feeding device for cold-rolled edge trimming material in one embodiment of the present invention;

[0033] Figure 2 for Figure 1 Another perspective structural schematic diagram of an automatic clamping and feeding device for cold-rolled edge trimming material in one embodiment;

[0034] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0035] Figure 4 for Figure 2 Enlarged view at point B in the middle;

[0036] Figure 5 for Figure 1 A schematic diagram of the clamping device in the embodiment;

[0037] Figure 6 for Figure 1 A schematic cross-sectional view of the clamping device in the embodiment;

[0038] Figure 7 for Figure 1Enlarged view of point C in the middle.

[0039] In the diagram: 1. Strip steel, 2. Cutting device, 11. Edge material, 3. Winding device, 4. Frame, 5. Reciprocating moving device, 6. Clamping device, 61. Mounting base, 62. First clamping rod, 63. Second clamping rod, 64. Clamping space, 65. Rope shaft, 66. Rope, 621. Through hole, 622. Limiting groove, 631. Limiting protrusion, 67. Push plate, 68. Elastic element, 51. First rotating shaft, 52. Second rotating shaft, 53. Conveyor belt, 54. Rotation drive component, 55. Protective shell, 551. Guide groove, 7. Transition plate, 8. Cutting blade, 81. Swinging drive component, 9. Guide plate. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0041] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0042] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] like Figures 1-2 As shown, this invention illustrates an automatic clamping and feeding device for cold-rolled edge trimming strips according to an embodiment of the present invention. The device is used to clamp the edge trimming strip 11 cut by the cutting device 2 and transport it to the coiling device 3. The device includes a frame 4, which serves as a basic support structure. A reciprocating moving device 5 is mounted on the frame 4, which drives a clamping device 6 to move back and forth between the cutting device 2 and the coiling device 3. The clamping device 6 is mounted on the reciprocating moving device 5 and includes a mounting base 61, a first clamping rod 62, and a second clamping rod 63. The mounting base 61 is connected to the reciprocating moving device 5 and moves synchronously with it. The first clamping rod 62 is fixed to the mounting base 61, and its extension direction is perpendicular to the conveying direction of the edge trimming strip 11. The second clamping rod 63 is oscillatingly connected to the first clamping rod 62 via a pin and is located below the cutting device 2. The two form an initially open clamping space 64 for receiving the edge trimming strip 11 that falls from the cut surface. When the edge material 11 enters the clamping space 64, the second clamping rod 63 is driven to swing toward the first clamping rod 62, clamping the edge material 11 in the clamping space 64. Then, the reciprocating moving device 5 drives the clamping device 6 to transfer the edge material 11 to the winding device 3.

[0047] The frame 4 provides the mounting foundation for all components, ensuring the overall stability of the device. The reciprocating moving device 5 enables the clamping device 6 to automatically move back and forth between the cutting and winding devices 3, eliminating the need for manual intervention in the transfer of the edge material 11. The clamping device 6, through the swinging cooperation of the first clamping rod 62 and the second clamping rod 63, forms an openable clamping space 64, which can automatically receive and clamp the cut edge material 11. Especially when the edge material 11 breaks, it can quickly grab the broken end and transfer it to the winding device 3. This structure replaces manual operation with mechanical automation, avoiding operator contact with the hot and sharp edge material 11, eliminating safety hazards such as burns and cuts; it eliminates the need for machine shutdown for manual handling, shortens production interruption time, and improves the continuity and production efficiency of the cold rolling edge trimming process. The swinging design of the clamping device 6 can adapt to edge material 11 in different states. Combined with the precise positioning of the reciprocating moving device 5, it ensures reliable docking of the edge material 11 end with the winding device 3, improving the overall automation and reliability of the equipment, and reducing labor costs and operational risks.

[0048] It should be noted that the frame 4 can be composed of two parts, left and right. The bottom of each part can be moved along the width direction. This is to make corresponding adjustments when the strip width changes so that the cutting of the edge material can be carried out smoothly.

[0049] like Figures 3-6 As shown, in the clamping device 6, the first clamping rod 62 and the second clamping rod 63 are hinged by a pin. A torsion spring is fitted at the hinge, and the two ends of the torsion spring abut against the first clamping rod 62 and the second clamping rod 63 respectively, to provide a restoring force for the second clamping rod 63 to swing towards the first clamping rod 62, so that the clamping space 64 remains clamped in its natural state. The mounting base 61 is rotatably connected to the rope shaft 65 via a bearing. The axis of the rope shaft 65 is perpendicular to the extension direction of the first clamping rod 62. The end of the second clamping rod 63 away from the clamping space 64 is fixedly connected to one end of the rope 66. The first clamping rod 62 has a through hole 621 along its length. The rope 66 passes through the through hole 621 and is wound around the rope shaft 65. The diameter of the through hole 621 is larger than the outer diameter of the rope 66 to form a sliding gap. When the rope shaft 65 is driven to rotate by the drive mechanism, the rope 66 is wound and shortened, pulling the second clamping rod 63 to swing in the opposite direction against the spring force, so that the clamping space 64 opens; when the drive mechanism stops, the restoring force of the spring drives the second clamping rod 63 to reset and clamp the edge material 11.

[0050] This structure achieves passive clamping of the edge material 11 through the elastic restoring force of the torsion spring, maintaining the clamping state without continuous power, thus reducing energy consumption and control complexity. The rope 66, guided by the through hole 621, cooperates with the rope shaft 65, converting the rotational motion of the rope shaft 65 into the swinging power of the second clamping rod 63. The through hole 621 limits the movement trajectory of the rope 66, preventing swinging jams caused by rope 66 deviation, ensuring precise and reliable opening and closing of the clamping space 64. The combination of these two mechanisms achieves automatic adjustment of the clamping force: the torsion spring provides the basic clamping force, while the rope 66-rope shaft 65 mechanism enables active release, ensuring stable clamping of the edge material 11 during transfer and rapid release upon reaching the winding device 3, improving the automation level and operational safety of the clamping mechanism.

[0051] like Figures 5-6As shown, a limiting groove 622 is formed on the side of the first clamping rod 62 facing the clamping space 64. This groove extends along the length of the first clamping rod 62, and the width of the groove opening is smaller than the width of the groove bottom, forming a stepped structure. A limiting protrusion 631 is provided on the side of the second clamping rod 63 facing the clamping space 64, and its cross-sectional shape is adapted to the opening of the limiting groove 622. When the second clamping rod 63 swings towards the first clamping rod 62, the limiting protrusion 631 is embedded in the limiting groove 622, and the mating surface of the two forces the edge material 11 located in the clamping space 64 to undergo local plastic deformation, thereby increasing the clamping friction. A push plate 67 is provided in the limiting groove 622. The push plate 67 is connected to the bottom wall of the groove by an elastic element 68 (such as a compression spring), and the axis of the elastic element 68 is perpendicular to the extension direction of the first clamping rod 62. The edge of the push plate 67 slides in engagement with the inner wall of the limiting groove 622 and can only move along the axis of the elastic element 68. When the limiting protrusion 631 is embedded in the groove, the deformed part of the edge material 11 squeezes the push plate 67 and compresses the elastic element 68; when the clamping space 64 opens, the elastic element 68 releases potential energy to push the push plate 67 and push the deformed edge material 11 out of the limiting groove 622.

[0052] The mechanical engagement of the limiting groove 622 and the limiting protrusion 631 forces local deformation of the edge material 11, significantly increasing the friction at the clamping interface. This effectively solves the problem of slippage of smooth or oily edge materials 11 during transport, ensuring stable clamping of the edge material 11 during transfer. The linkage structure of the push plate 67 and the elastic element 68 utilizes elastic potential energy to achieve automatic unloading, preventing deformed edge material 11 from remaining in the groove and affecting subsequent clamping actions. This eliminates the need for manual cleaning, ensuring the continuous and reliable operation of the clamping device 6. The combination of these two elements enhances clamping stability through physical interference and achieves self-cleaning of the clamping mechanism through the elastic push mechanism. This improves the adaptability and reliability of the device under complex working conditions such as high dust and oil contamination, reducing maintenance costs and downtime.

[0053] like Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown, the reciprocating moving device 5 includes a first rotating shaft 51 and a second rotating shaft 52 rotatably connected at both ends of the frame 4 via bearing seats. An annular conveyor belt 53 is wound around the outside of the two rotating shafts. A mounting seat 61 is fixed to the outer surface of the conveyor belt 53 and moves synchronously with it. A rotating drive component 54 (such as a bidirectional servo motor) is connected to the first rotating shaft 51 and drives the conveyor belt 53 to reciprocate along the length of the frame 4 by forward and reverse rotation. The frame 4 is covered with a protective shell 55, and a guide groove 551 is opened on its side wall. The first clamping rod 62 and the second clamping rod 63 extend out of the protective shell 55 through the guide groove 551 and slide along the groove. An arc-shaped guide plate 9 is fixed to the inner wall of the protective shell 55 near the cutting device 2 to guide the cut edge material 11 to slide down the plate surface into the clamping space 64.

[0054] A transition plate 7 is provided on the side wall of the protective shell 55 near the winding device 3. A transition groove is formed on the upper surface of the transition plate 7 along the conveying direction of the edge material 11. The width of the transition groove is adapted to the width of the edge material 11. The bottom of the groove is horizontal or slightly arc-shaped to ensure that the edge material 11 slides smoothly in the groove. The outlet end of the transition groove extends to the feed port of the winding device 3. The edge of the groove wall is rounded and chamfered to avoid scratching the edge material 11. The upper surface of the transition plate 7 is oscillatingly connected to the cutting blade 8 through a pin. The blade faces the transition plate 7. The axis of the pin is parallel to the length direction of the transition groove. The oscillating drive component 81 (such as a cylinder or a rotating motor) installed on the side wall is hinged to the handle of the cutting blade 8, driving the cutting blade 8 to oscillate around the pin to cut the edge material 11.

[0055] When the edge material 11 breaks, the rotating drive 54 drives the conveyor belt 53 to move the clamping device 6 below the cutting device 2. The guide plate 9 constrains the falling trajectory of the edge material 11, ensuring it accurately enters the clamping space 64. After the second clamping rod 63 swings to clamp the edge material 11, the conveyor belt 53 moves in the opposite direction, and the guide groove 551 limits the movement to ensure accuracy. The edge material 11 is moved with the clamping device 6 to the transition plate 7 and enters the transition groove. When the winding device 3 reaches the preset winding diameter or length (i.e., the winding limit), the control system triggers the swing drive 81 to push the cutting blade 8 to cut the edge material 11 in the transition groove, separating the edge material 11 from the already wound part. At this time, the newly cut edge material 11 ends at the exit of the transition groove, waiting for the hollow winding shaft of the winding device 3 to start and rewind the edge material 11.

[0056] The protective shell 55 isolates the conveyor belt 53 from external contaminants, extending the life of the transmission components. The guide groove 551 ensures the accuracy of the movement trajectory of the clamping device 6. The gradient channel design of the guide plate 9 improves the success rate of receiving the edge material 11 and avoids deviation. The transition groove forms a constraint on both sides of the edge material 11, ensuring that the edge material 11 maintains a straight movement during the transfer process and avoids jamming caused by shaking or deviation. It is especially suitable for conveying narrower or thinner edge materials 11. The rounded chamfer treatment of the groove wall reduces frictional resistance and protects the surface quality of the edge material 11.

[0057] The integrated design of the cutting blade 8 and the transition groove enables precise cutting of the edge material 11 during conveying: when the winding device 3 reaches the preset capacity, the system automatically triggers the cutting action to separate the edge material 11 from the full roll, while keeping the end of the new edge material 11 accurately positioned at the exit of the transition groove, so that the winding device 3 can directly grab it; by adjusting the length and position of the transition groove, the remaining length of the edge material 11 after cutting can be precisely controlled to ensure that the starting length of the new roll is moderate and to avoid winding defects caused by uneven or excessive length of the cut.

[0058] This structure, through the collaborative operation of multiple components, forms a complete automated process of "receiving broken edge material 11 - clamping and transferring - end cutting - precise positioning and winding." It eliminates the need for manual intervention in the handling of broken edge material 11, thus removing safety hazards. Furthermore, the precise coordination of the mechanical structure improves production continuity and reduces downtime caused by edge material handling, meeting the automation requirements of high-speed cold rolling production lines. The horizontal transition groove design, compared to an inclined plate surface, is more conducive to the smooth transport and precise positioning of edge material 11. Especially when handling high-strength or high-hardness edge material 11, it effectively avoids speed loss or positional deviation caused by gravity, further improving system reliability and winding quality.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A kind of cold-rolled trimming edge material automatic clamping and feeding device, for clamping and feeding the edge material (11) under the cutting of strip steel (1) cutting device (2) to winding device (3), it is characterized in that, include: Frame (4); A reciprocating moving device (5) is mounted on the frame (4); A clamping device (6) is provided on the reciprocating moving device (5). The clamping device (6) is arranged to be able to move between the cutting device (2) and the winding device (3) under the action of the reciprocating moving device (5) to clamp the edge material (11) and drive the edge material (11) closer to the winding device (3). The clamping device (6) includes: Mounting base (61), the mounting base (61) is disposed on the reciprocating moving device (5); The first clamp (62) is disposed on the mounting base (61), and the extension direction of the first clamp (62) is perpendicular to the conveying direction of the edge material (11). The second clamping rod (63) is swayed on the first clamping rod (62) and located below the cutting device (2). The second clamping rod (63) and the first clamping rod (62) form a clamping space (64). The clamping space (64) is used to receive the edge material (11) cut by the cutting device (2). The second clamping rod (63) is arranged so that after swaying, it can clamp the edge material (11) with the first clamping rod (62) in the clamping space (64).

2. The automatic clamping and feeding device for cold-rolled edge trimming material according to claim 1, characterized in that, A torsion spring is provided at the connection between the first clamping rod (62) and the second clamping rod (63). The torsion spring is used to provide the force for the second clamping rod (63) to swing toward the first clamping rod (62), so that the clamping space (64) clamps the edge material (11). A rope shaft (65) is rotatably connected to the mounting base (61). A rope (66) is connected between the second clamping rod (63) and the rope shaft (65). The rope (66) contacts the side of the first clamping rod (62) away from the clamping space (64). The rope shaft (65) is arranged to be wound around the rope (66) after rotation, so that the second clamping rod (63) swings in the opposite direction against the elastic force of the torsion spring, so that the clamping space (64) releases the edge material (11).

3. An automatic pinch device for cold-rolled trimmed edge material according to claim 2, characterized in that The first clamp (62) has a through hole (621) along its length, and the rope (66) passes through the through hole (621).

4. The automatic pinch device for cold-rolled trimmed edge material according to claim 2, characterized in that, The first clamping rod (62) has a limiting groove (622) with an opening facing the clamping space (64), and the second clamping rod (63) has a limiting protrusion (631) extending into the clamping space (64). The limiting groove (622) and the limiting protrusion (631) are arranged such that after the second clamping rod (63) swings close to the first clamping rod (62), the limiting protrusion (631) moves into the limiting groove (622) to deform the edge material (11) located in the clamping space (64).

5. An automatic pinch device for cold-rolled trimmed edge material according to claim 4, characterized in that The limiting groove (622) is provided with a push plate (67) for pushing the deformed edge material (11) out of the limiting groove (622). An elastic element (68) is provided between the bottom wall of the limiting groove (622) and the push plate (67). The elastic element (68) is used to elastically push the push plate (67) so that the push plate (67) can push the deformed edge material (11) out of the limiting groove (622).

6. An automatic pinch device for cold-rolled trimmed edge material as defined in claim 1, characterized in that The reciprocating moving device (5) includes: The first rotating shaft (51) is rotatably mounted on the frame (4) at one end near the cutting device (2); The second rotating shaft (52) is rotatably mounted on one end of the frame (4) near the winding device (3); A conveyor belt (53) is wound around the first rotating shaft (51) and the second rotating shaft (52), and the mounting base (61) is disposed on the conveyor belt (53); A rotating drive (54) is mounted on the frame (4). The output end of the rotating drive (54) is connected to the first rotating shaft (51). The rotating drive (54) is arranged to rotate and drive the first rotating shaft (51) to rotate, so that the conveyor belt (53) can drive the mounting base (61) to move between the cutting device (2) and the winding device (3).

7. An automatic pinch device for cold-rolled trimmed edge material according to claim 6, characterized in that The reciprocating moving device (5) further includes: A protective shell (55) is connected to the frame (4). The protective shell (55) covers the outside of the conveyor belt (53). A guide groove (551) is provided on the protective shell (55). One end of the first clamping rod (62) and the second clamping rod (63) both extend out of the protective shell (55) through the guide groove (551).

8. An automatic pinch device for cold-rolled trimmed edge material according to claim 7, characterized in that The protective shell (55) has a transition plate (7) on one side wall near the winding device (3) facing the winding device (3). The transition plate (7) is used to guide the edge material (11) clamped by the clamping device (6) to the winding device (3).

9. An automatic pinch device for cold-rolled trimmed edge material according to claim 8, characterized in that A cutting blade (8) is vertically oscillatingly connected to the transition plate (7), and the cutting blade (8) is used to cut the edge material (11) located on the transition plate (7); the side wall of the transition plate (7) is provided with an oscillating drive (81) for driving the cutting blade (8) to oscillate.

10. The automatic pinch device for cold-rolled trimmed edge material according to claim 8, characterized in that The protective shell (55) has a guide plate (9) on one side wall near the cutting device (2). The guide plate (9) is located below the cutting device (2) and is used to guide the edge material (11) into the clamping space (64).

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