A cutting device for producing steel structures for building construction

Abstract

The present invention belongs to the field of mechanical processing technology, and discloses a cutting device for producing steel structures for construction, including a conveyor, a motor and a transport roller, a fixing mechanism is installed in the middle of the top surface of the conveyor, two groups of pillars are installed on the top of the conveyor located on the right side of the fixing mechanism, a top plate is installed on the top of the pillar, a hydraulic cylinder is fixedly installed on the bottom of the top plate, and a movable plate is fixedly installed on the telescopic end of the hydraulic cylinder. The device generates a rotational torque by relative rotation between a fixing plate and a support platform, which applies tension to a torsion spring, and the torsion spring generates a rebound force, thereby offsetting the drooping force generated by the cut-off part of the workpiece, and the rebound force is much greater than the drooping force, so that the workpiece can be stably supported by abutment before being completely cut off, and the cut surface will not be offset and cut or even scrapped because of the stability and flatness of the cut-off part.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a cutting device for producing steel structures for building construction. Background Art

[0002] Steel structure is a structure composed of steel materials, which is widely used as a supporting part of various metal beams in construction. The structure is mainly composed of steel beams, steel balls and steel trusses made of steel sections and steel plates. The components are usually connected by welds, bolts or rivets. The steel structure needs to be cut during the production process and the required length is obtained so that it can be reasonably used during the construction process. In the prior art, it is more common that a motor drives a circular saw blade to rotate at high speed while making a linear motion as a whole under the drive of a hydraulic cylinder to cut a square metal tube. Although this technology has the advantage of low cost, when fixing the square tube, since the cut end is generally not fixed during cutting, it is easy to cause the self-weight to sag when it is about to be cut, so that the circular saw blade used for cutting is subjected to force, resulting in uneven cutting. The existing solution is to fix both the fixed end and the cut end, but this brings another problem. After the square tube is completely cut, it will become two independent individuals, and the stress conditions when connected are completely different, which will cause the cutting surface to be affected to a certain extent. Summary of the invention

[0003] The object of the present invention is to provide a cutting device for producing steel structures for building construction, so as to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cutting device for producing steel structures for construction, comprising a conveyor platform, a motor and a transport roller, a fixing mechanism is installed in the middle of the top surface of the conveyor platform, two groups of pillars located on the right side of the fixing mechanism are installed on the top of the conveyor platform, a top plate is installed on the top of the pillar, a hydraulic cylinder is fixedly installed on the bottom of the top plate, a moving plate is fixedly installed on the telescopic end of the hydraulic cylinder, the moving plate is slidably installed on the outer surface of the pillar, two groups of limiting plates are fixedly installed on the right side of the top of the moving plate, a cutting mechanism is fixedly installed on the right side of the moving plate, and a fixing plate is fixedly installed on the right side of the conveyor platform. A supporting roller is rotatably installed inside the fixed plate, and both ends of the supporting roller are movably sleeved with torsion springs and elastically connected to the fixed plate through the torsion springs. A supporting platform is fixedly installed on the top of the torsion spring, and two groups of fixed cylinders symmetrically distributed front and back are fixedly installed on the top of the supporting platform, one end of the fixed cylinder is fixedly connected to a sealing cylinder, and the internal sealing sleeve of the sealing cylinder is provided with a piston column, and the top of the piston column is fixedly connected to a roller, and the outer surface of the roller abuts against the limit plate, and the sealing sleeve at the other end of the fixed cylinder is provided with a sealing column and a spring, and the outer end of the spring is fixedly connected to a feeding mechanism, and the inner cavities of the fixed cylinder and the sealing cylinder are filled with hydraulic oil.

[0005] As a preferred solution of the present invention, the unloading mechanism includes a fixing frame fixedly connected to one end of the outer side of the sealing column, a fixing column is fixedly installed in the middle of the fixing frame, a sleeve is movably sleeved on the outer surface of the fixing column, a buffer sleeve is fixedly connected to the outer surface of the sleeve, an annular groove is opened in the middle of the outer surface of the fixed column, an elastic vortex sheet is limit-clamped inside the annular groove, and one end of the outer side of the elastic vortex sheet is limit-clamped on the inner wall of the sleeve.

[0006] As a preferred solution of the present invention, the fixing mechanism includes a mounting frame fixedly installed in the middle of the top surface of the conveyor platform, a telescopic rod is installed on the top of the mounting frame, the telescopic end of the telescopic rod is fixedly connected to a pressure plate, a buffer pad is glued to the bottom of the pressure plate, and a guide column is fixedly connected to the top of the pressure plate, and the top of the guide column penetrates upward to the top of the mounting frame.

[0007] As a preferred solution of the present invention, a horizontal unloading platform is provided on both sides of the inner wall of the conveyor, and the horizontal unloading platform is flush with the top of the transport roller and the upper surface of the support platform. A workpiece is placed on the top of the transport roller, and the workpiece is pressed and fixed under the pressure plate and the buffer pad.

[0008] As a preferred solution of the present invention, the fixed cylinders are provided in two groups and are symmetrically distributed front and back on the top of the support platform. The two groups of fixed cylinders are combined to form a horizontally open obtuse angle facing left.

[0009] As a preferred solution of the present invention, the inner diameter of the sealing cylinder is smaller than the inner diameter of the fixed cylinder, the hydraulic oil is sealed between the piston column and the sealing column, the spring is movably sleeved on the outer surface of the sealing column and is located on the side of the fixed cylinder where the inner cavity is not filled with hydraulic oil, and the two ends of the spring are elastically connected to the sealing column and the fixed cylinder respectively.

[0010] As a preferred solution of the present invention, the support roller is composed of a support block fixedly connected to the bottom of the support platform and two groups of mounting columns fixedly connected to the front and rear ends of the support block, the mounting columns are rotatably installed inside the fixed plate, one end of the torsion spring is elastically connected to the fixed plate, and the other end of the torsion spring is elastically connected to the support block.

[0011] As a preferred solution of the present invention, the top-view cross-sectional shape of the elastic vortex blade is a spiral line, the elastic vortex blade is made of stainless steel, a group of convex strips are provided at both inner and outer ends of the elastic vortex blade, a group of vertical grooves are provided on the inner annular surface of the sleeve and the outer surface of the fixed column, and the convex strips are fixedly clamped in the vertical grooves.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. This device has been redesigned to enable the workpiece to receive more effective and balanced abutment support. The cut section of the workpiece after being cut by the cutting mechanism will become larger and larger. By installing a fixing plate on the right side of the conveyor, and rotating the support roller and the support platform, the upper surface of the support platform is flush with the horizontal unloading platform of the conveyor. When the workpiece is fixed above the conveyor, the cut part on the right side is supported by the support platform that can rotate around the axis of the support roller. Before the workpiece is completely cut off, it is in a connected state, that is, an overall connected state. When the workpiece is cut and produces downward The drooping force is generated from the right end of the cut part of the workpiece. At this time, the drooping force acts on the supporting platform, and the supporting platform is connected to the supporting roller. The relative rotation between the fixed plate and the supporting platform generates a rotational torque that applies tension to the torsion spring. The torsion spring generates a rebound force, thereby offsetting the drooping force generated by the cut part of the workpiece, and the rebound force is much greater than the drooping force, so that the workpiece can be stably supported before being completely cut off, and its cut surface will be stable and flat due to the cut part, avoiding the cut surface of the workpiece from being offset and damaged, or even scrapped.

[0014] 2. This device is equipped with a feeding mechanism to assist the workpiece in automatic feeding after it is completely cut off. A piston column is provided to connect the roller and rotate to abut against the bottom of the limit plate. When the hydraulic cylinder drives the movable plate and the limit plate to move downward to perform the cutting work, the piston column is driven to compress the hydraulic oil in the sealing cylinder and the fixed cylinder, and the pressure is synchronously transmitted to the sealing column, driving the feeding mechanism located at one end of the outer side of the sealing column to move toward the horizontal center line of the workpiece, and synchronously abuts and squeezes the front and back sides of the workpiece. The feeding mechanism is inclined along the axial direction of the fixed cylinder and presses toward the side of the workpiece. A group of force perpendicular to the surface of the workpiece is used to clamp the workpiece to make it more stable, while the horizontal right component parallel to the horizontal axis of the workpiece produces The thrust to the right is generated. On the one hand, this thrust prevents partial contact between the two ends of the cut surface of the workpiece when the workpiece is not completely cut off. On the other hand, when the unloading mechanism continues to move as a whole, the friction force generated by the extrusion of the buffer sleeve and the workpiece drives the buffer sleeve and the sleeve to rotate around the axis of the fixed column, and tightens the elastic vortex sheet to generate rebound tension. When the workpiece is cut off, the design of the support platform and the support roller rotating and installed in the fixed plate makes the workpiece drive the support platform to rotate downward as a whole under the action of its own weight, while sliding down by the gravity of the workpiece. At the same time, the rebound tension of the elastic vortex sheet drives the sleeve and the buffer sleeve to rotate in the opposite direction, and generates friction on the side of the workpiece, so that the workpiece moves along the transportation direction, thereby realizing the automatic unloading function of the workpiece.

[0015] 3. Finally, when the workpiece drives the supporting platform as a whole to rotate downward clockwise around the axis of the supporting roller to unload the material, the fixed cylinder, sealing cylinder, piston column and roller are driven to rotate clockwise around the axis of the supporting roller. At this time, the roller abuts against the bottom of the limit plate to prevent the unloading mechanism and the sealing column from resetting under the rebound action of the spring. At the same time, due to the limiting effect of the limit plate, the roller will shrink a part of itself into the sealing cylinder while rotating and abutting against its bottom, and the pressure generated by the shrinkage will also act on the sealing column and the unloading mechanism, thereby increasing the contact stroke between the buffer sleeve and the side of the workpiece when unloading the workpiece and assisting the unloading of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the right side structure of the overall structure of the present invention;

[0017] Figure 2 It is a structural schematic diagram on the left side of the overall structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the separation structure of the fixing plate, the supporting roller, the torsion spring, the supporting platform, the fixing cylinder, the sealing cylinder, the piston column, the roller, the sealing column, the unloading mechanism and the spring of the present invention;

[0019] Figure 4 It is a schematic diagram of a top view of the overall structure of the present invention;

[0020] Figure 5 It is a front cutaway structural schematic diagram of the overall structure of the present invention;

[0021] Figure 6 It is a schematic diagram of the structure of the fixed plate, the support roller and the torsion spring of the present invention;

[0022] Figure 7 It is a schematic diagram of a top view of a cutaway structure of a material unloading mechanism located at the front side of the present invention;

[0023] Figure 8 It is a schematic diagram of the axial section structure of the fixing cylinder, the sealing cylinder, the piston column, the roller, the sealing column, the feeding mechanism and the spring of the present invention;

[0024] Fig. 9 For the present invention Figure 8 A magnified schematic diagram of the structure at center A;

[0025] Fig.10 It is a schematic diagram of the separation structure of the fixed cylinder, the sealing column, the feeding mechanism and the spring of the present invention.

[0026] In the figure: 1. conveyor; 2. motor; 3. transport roller; 4. workpiece; 5. fixing mechanism; 51. mounting frame; 52. telescopic rod; 53. pressure plate; 54. buffer pad; 55. guide column; 6. pillar; 7. top plate; 8. hydraulic cylinder; 9. moving plate; 10. limit plate; 11. fixing plate; 12. supporting roller; 121. supporting block; 122. mounting column; 13. torsion spring; 14. supporting platform; 15. fixing cylinder; 16. sealing cylinder; 17. piston column; 18. roller; 19. sealing column; 20. unloading mechanism; 201. fixing frame; 202. fixing column; 203. sleeve; 204. buffer sleeve; 205. elastic vortex; 21. cutting mechanism; 22. spring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 10As shown, an embodiment of the present invention provides a cutting device for producing steel structures for construction, including a conveyor platform 1, a motor 2 and a transport roller 3. A fixing mechanism 5 is installed in the middle of the top surface of the conveyor platform 1. Two groups of pillars 6 located on the right side of the fixing mechanism 5 are installed on the top of the conveyor platform 1. A top plate 7 is installed on the top of the pillar 6. A hydraulic cylinder 8 is fixedly installed on the bottom of the top plate 7. A moving plate 9 is fixedly installed on the telescopic end of the hydraulic cylinder 8. The moving plate 9 is slidably installed on the outer surface of the pillar 6. Two groups of limiting plates 10 are fixedly installed on the right side of the top of the moving plate 9. A cutting mechanism 21 is fixedly installed on the right side of the moving plate 9. A fixing plate 11 is fixedly installed on the right side of the conveyor platform 1. A supporting plate 11 is rotatably installed inside the fixing plate 11. Support roller 12, both ends of the support roller 12 are movably sleeved with torsion springs 13, and are elastically connected to the fixed plate 11 through the torsion springs 13, a support platform 14 is fixedly installed on the top of the torsion spring 13, and two groups of fixed cylinders 15 symmetrically distributed front and back are fixedly installed on the top of the support platform 14, one end of the fixed cylinder 15 is fixedly connected with a sealing cylinder 16, the internal sealing sleeve of the sealing cylinder 16 is provided with a piston column 17, the top of the piston column 17 is fixedly connected with a roller 18, the outer surface of the roller 18 is in contact with the limit plate 10, the other end of the sealing sleeve of the fixed cylinder 15 is provided with a sealing column 19 and a spring 22, the outer end of the spring 22 is fixedly connected with a feeding mechanism 20, and the inner cavities of the fixed cylinder 15 and the sealing cylinder 16 are filled with hydraulic oil;

[0029] The device has been redesigned so that the workpiece 4 can get a more effective and balanced abutment support. The cut section of the workpiece 4 after being cut by the cutting mechanism 21 will become larger and larger. By installing a fixing plate 11 on the right side of the conveyor 1, and rotating the support roller 12 and the support platform 14, the upper surface of the support platform 14 is flush with the horizontal discharge platform of the conveyor 1. When the workpiece 4 is fixed on the top of the conveyor 1, the cut portion on the right side is supported by the support platform 14 which can rotate around the axis of the support roller 12. Before the workpiece 4 is completely cut off, it is in a connected state, that is, an overall connected state. When the workpiece 4 is cut and produces a The drooping force under the workpiece 4 is generated from the right end of the cut part. At this time, the drooping force acts on the support platform 14, and the support platform 14 is connected to the support roller 12. The relative rotation between the fixed plate 11 and the support platform 14 generates a rotational torque, which applies tension to the torsion spring 13. The torsion spring 13 generates a rebound force, thereby offsetting the drooping force generated by the cut part of the workpiece 4, and the rebound force is much larger than the drooping force, so that the workpiece 4 can be stably supported before being completely cut off, and its cut surface will be stable and smooth due to the cut part, so as to avoid the cut surface of the workpiece 4 from being offset and damaged, or even scrapped.

[0030] The unloading mechanism 20 includes a fixing frame 201 fixedly connected to one end of the outer side of the sealing column 19, a fixing column 202 is fixedly installed in the middle of the fixing frame 201, a sleeve 203 is movably sleeved on the outer surface of the fixing column 202, a buffer sleeve 204 is fixedly connected to the outer surface of the sleeve 203, an annular groove is provided in the middle of the outer surface of the fixing column 202, an elastic vortex sheet 205 is limitedly clamped inside the annular groove, and one end of the outer side of the elastic vortex sheet 205 is limitedly clamped on the inner wall of the sleeve 203;

[0031] The device is provided with a feeding mechanism 20 to assist the workpiece 4 to realize automatic feeding after being completely cut off. A piston column 17 is provided to connect the roller 18 and rotate to abut against the bottom of the limit plate 10. When the hydraulic cylinder 8 drives the movable plate 9 and the limit plate 10 to move downward to perform the cutting work, the piston column 17 is driven to compress the hydraulic oil in the sealing cylinder 16 and the fixed cylinder 15, and the pressure is synchronously transmitted to the sealing column 19, driving the feeding mechanism 20 located at the outer end of the sealing column 19 to move toward the horizontal center line of the workpiece 4, and synchronously abut and squeeze the front and rear sides of the workpiece 4. The feeding mechanism 20 is inclined along the axial direction of the fixed cylinder 15 to apply pressure toward the side of the workpiece 4, and a group of force perpendicular to the surface of the workpiece 4 is used to clamp the workpiece 4 to make it more stable, and the horizontal rightward component force parallel to the horizontal axis of the workpiece 4 produces a rightward force on the workpiece 4. Thrust, on the one hand, prevents partial contact between the two ends of the cut surface of the workpiece 4 when the workpiece 4 is not completely cut off; on the other hand, when the unloading mechanism 20 continues to move as a whole, the friction force generated by the squeezing of the buffer sleeve 204 and the workpiece 4 drives the buffer sleeve 204 and the sleeve 203 to rotate around the axis of the fixed column 202, and tightens the elastic vortex sheet 205 to generate rebound tension. When the workpiece 4 is cut off, the design of the support platform 14 and the support roller 12 rotatably installed in the fixed plate 11 makes the workpiece 4 drive the support platform 14 to rotate downward as a whole under the action of its own weight, while sliding down by the gravity of the workpiece 4. At the same time, the sleeve 203 and the buffer sleeve 204 are driven to rotate in the opposite direction by the rebound tension of the elastic vortex sheet 205, and friction is generated on the side of the workpiece 4, so that the workpiece 4 moves along the transportation direction, thereby realizing the automatic unloading function of the workpiece 4.

[0032] Finally, when the workpiece 4 drives the supporting platform 14 as a whole to rotate downward clockwise around the axis of the supporting roller 12 for unloading, it drives the fixed cylinder 15, the sealing cylinder 16, the piston column 17 and the roller 18 to rotate clockwise around the axis of the supporting roller 12. At this time, the roller 18 abuts against the bottom of the limiting plate 10 to prevent the unloading mechanism 20 and the sealing column 19 from resetting under the rebound action of the spring 22. At the same time, due to the limiting effect of the limiting plate 10, the roller 18 will shrink a part of itself into the sealing cylinder 16 while rotating and abutting against its bottom, and the pressure generated by the shrinkage will also act on the sealing column 19 and the unloading mechanism 20, thereby increasing the contact stroke of the buffer sleeve 204 with the side of the workpiece 4 when unloading the workpiece 4 and assisting the workpiece unloading.

[0033] The fixing mechanism 5 includes a mounting frame 51 fixedly mounted on the middle of the top surface of the conveyor platform 1, a telescopic rod 52 is mounted on the top of the mounting frame 51, a pressing plate 53 is fixedly connected to the telescopic end of the telescopic rod 52, a buffer pad 54 is glued to the bottom of the pressing plate 53, a guide column 55 is fixedly connected to the top of the pressing plate 53, and the top end of the guide column 55 penetrates upward to the top of the mounting frame 51;

[0034] The fixing mechanism 5 is used to press the workpiece 4 to fix it. The pressing plate 53 and the buffer pad 54 are pressed down by the telescopic rod 52. The guide column 55 provides a guiding function. The buffer pad 54 is made of a rubber block, thereby protecting the surface of the workpiece 4 from being crushed by the rigidity of the pressing plate 53.

[0035] Among them, the left and right sides of the inner wall of the conveyor 1 are provided with a horizontal material discharge platform, which is flush with the top of the conveying roller 3 and the upper surface of the supporting platform 14. The workpiece 4 is placed on the top of the conveying roller 3, and the workpiece 4 is pressed and fixed under the pressing plate 53 and the buffer pad 54;

[0036] Horizontal unloading platforms are provided on both sides of the inner wall of the conveyor platform 1. When the workpiece 4 is transported to the processing position by the transport roller 3 through rotation, the horizontal unloading platform provides support to prevent the fixing mechanism 5 from crushing the transport roller 3.

[0037] The fixed cylinders 15 are provided in two groups and are symmetrically distributed on the top of the support platform 14. The two groups of fixed cylinders 15 are combined to form a horizontal left-facing obtuse angle.

[0038] like Figure 4 As shown, the two groups of fixed cylinders 15 are distributed in an "eight" shape. This design enables the unloading mechanism 20 to generate a horizontal rightward component force when squeezing the workpiece 4, thereby assisting the unloading of the workpiece 4.

[0039] The inner diameter of the sealing cylinder 16 is smaller than that of the fixed cylinder 15, and the hydraulic oil is sealed between the piston column 17 and the sealing column 19. The spring 22 is movably sleeved on the outer surface of the sealing column 19 and is located on the side of the inner cavity of the fixed cylinder 15 that is not filled with hydraulic oil. The two ends of the spring 22 are elastically connected to the sealing column 19 and the fixed cylinder 15 respectively.

[0040] The inner diameter of the sealing cylinder 16 is smaller than the inner diameter of the fixed cylinder 15, which means that the limit plate 10 drives the piston column 17 to move down a certain position, and the displacement of the sealing column 19 generated by the hydraulic oil transmission will be shorter, which can avoid excessive extrusion between the unloading mechanism 20 and the workpiece 4, and the buffer sleeve 204 is made of rubber block and has a certain compression space when it abuts against the workpiece 4.

[0041] The support roller 12 is composed of a support block 121 fixedly connected to the bottom of the support platform 14 and two sets of mounting columns 122 fixedly connected to the front and rear ends of the support block 121. The mounting columns 122 are rotatably mounted inside the fixed plate 11. One end of the torsion spring 13 is elastically connected to the fixed plate 11, and the other end of the torsion spring 13 is elastically connected to the support block 121.

[0042] The support roller 12 can rotate clockwise around its own axis, and is elastically supported by the rotational tension of the torsion spring 13. When the workpiece 4 is cut off, the cut portion of the workpiece 4 located on the support platform 14 will automatically rotate under the action of its own gravity and the overall center of gravity offset to complete the unloading.

[0043] The cross-sectional shape of the elastic vortex sheet 205 in top view is a spiral line. The elastic vortex sheet 205 is made of stainless steel. A group of convex strips are provided at both inner and outer ends of the elastic vortex sheet 205. A group of vertical grooves are provided on the inner annular surface of the sleeve 203 and the outer surface of the fixed column 202. The convex strips are fixedly connected to the vertical grooves.

[0044] like Figure 7 As shown, the two groups of convex strips of the elastic vortex sheet 205 are respectively stuck in the vertical grooves on the surfaces of the fixing column 202 and the sleeve 203. Figure 7 What is shown is the unloading mechanism 20 located on the front side. At this time, when the buffer sleeve 204 is driven to move toward the workpiece 4, it rotates and abuts against the front side of the workpiece 4 and rotates counterclockwise around its own axis, thereby tightening the elastic vortex sheet 205 so that the workpiece 4 can be restored after being cut off, and its tension is applied to the sleeve 203 Hanger buffer sleeve 204 to make it rotate in the opposite direction, thereby generating friction on the workpiece 4, thereby assisting the unloading of the workpiece 4. In the unloading mechanism 20 located on the rear side, due to the symmetrical distribution front and back, the tightening of the elastic vortex sheet 205 located on the rear side is completely opposite to the rotation direction.

[0045] Working principle:

[0046] First, place the workpiece 4 on the conveyor table 1, start the conveying roller 3 and drive the horizontal end of the workpiece 4 along the conveying direction, so that the cut end of the workpiece 4 moves to the top of the support platform 14, so that the bottom of the support platform 14 abuts and supports the workpiece 4. At this time, the workpiece 4 is in a horizontal state as a whole, start the telescopic rod 52, and drive the pressing plate 53 and the buffer pad 54 to move downward, and press the workpiece 4, so that the bottom of the workpiece 4 abuts against the horizontal discharge platforms on the left and right sides of the conveyor table 1, and the workpiece 4 is fixed;

[0047] Then, the hydraulic cylinder 8 is started, and the movable plate 9 is driven to move downward. Before the cutting mechanism 21 contacts the workpiece 4, the movable plate 9 drives the limit plate 10 to squeeze the roller 18 downward, drives the piston column 17 to move downward, and applies pressure to the hydraulic oil in the sealing cylinder 16, transmits the pressure to the inner end of the sealing column 19, and drives the sealing column 19 and the unloading mechanism 20 to move as a whole along the axis of the fixed cylinder 15 toward the side close to the workpiece 4. The two groups of unloading mechanisms 20 contact both sides of the workpiece 4 at the same time, and the buffer sleeve 204 is squeezed with the side of the workpiece 4 and generates deformation and friction. At this time, the buffer sleeve 204 and the sleeve 203 rotate around their own axis under the combined action of friction and the movement driven by the sealing column 19, so that the elastic vortex 205 is tightened;

[0048] Finally, the cutting mechanism 21 is started to cut the workpiece 4. During this process, since the workpiece 4 is not completely cut off, the residual connection at its joint and the horizontal support force from the support roller 12 ensure that the cut of the workpiece 4 is smooth and does not deviate. When the workpiece 4 is completely cut off, the cut part is separated from the part fixed above the conveyor 1. Under the action of its own gravity, the cut part drives the support platform 14 and the support roller 12 to rotate clockwise downward around the axis of the support roller 12 as a whole. At this time, the elastic vortex 205 recovers and drives the sleeve 203 and the buffer sleeve 204 to rotate in the opposite direction. The rotational torque acts on the cut part of the workpiece 4 through the buffer sleeve 204, so that the workpiece 4 is automatically unloaded after being cut off. At the same time, the support roller 12 applies tension around its axis to the torsion spring 13 during rotation. After the cut part of the workpiece 4 is unloaded from the support platform 14, the torsion spring 13 drives the support roller 12 and the support platform 14 to reset.

[0049] Note: When the support platform 14 rotates as a whole, it will drive the sealing cylinder 16, the piston column 17 and the roller 18 to rotate clockwise around the axis of the support roller 12. At this time, under the limiting action of the limiting plate 10, the roller 18 rotates and abuts against it, and at the same time contracts part of the inner cavity of the sealing cylinder 16. This force displacement makes the unloading mechanism 20 exert a greater force on the workpiece 4 as a whole.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting device for producing steel structures for building construction, comprising a conveyor platform (1), a motor (2) and a transport roller (3), wherein a fixing mechanism (5) is installed in the middle of the top surface of the conveyor platform (1), characterized in that: The top of the conveyor platform (1) is provided with two groups of pillars (6) located on the right side of the fixing mechanism (5), the top of the pillar (6) is provided with a top plate (7), the bottom of the top plate (7) is fixedly provided with a hydraulic cylinder (8), the telescopic end of the hydraulic cylinder (8) is fixedly provided with a movable plate (9), the movable plate (9) is slidably provided on the outer surface of the pillar (6), two groups of limit plates (10) are fixedly provided on the right side of the top of the movable plate (9), the right side of the movable plate (9) is fixedly provided with a cutting mechanism (21), the right side of the conveyor platform (1) is fixedly provided with a fixing plate (11), a supporting roller (12) is rotatably provided inside the fixing plate (11), both ends of the supporting roller (12) are movably sleeved with torsion springs (13), and the torsion springs (13) are used to move the supporting rollers (12) to the supporting rollers (12). 3) elastically connected to the fixed plate (11), a support platform (14) is fixedly installed on the top of the torsion spring (13), two groups of fixed cylinders (15) symmetrically distributed in the front and rear are fixedly installed on the top of the support platform (14), one end of the fixed cylinder (15) is fixedly connected to a sealing cylinder (16), the internal sealing sleeve of the sealing cylinder (16) is provided with a piston column (17), the top of the piston column (17) is fixedly connected to a roller (18), the outer surface of the roller (18) is in contact with the limit plate (10), the other end of the sealing sleeve of the fixed cylinder (15) is provided with a sealing column (19) and a spring (22), the outer end of the spring (22) is fixedly connected to a feeding mechanism (20), and the inner cavities of the fixed cylinder (15) and the sealing cylinder (16) are filled with hydraulic oil; The unloading mechanism (20) comprises a fixing frame (201) fixedly connected to an outer end of a sealing column (19); a fixing column (202) is fixedly installed in the middle of the fixing frame (201); a sleeve (203) is movably sleeved on the outer surface of the fixing column (202); a buffer sleeve (204) is fixedly connected to the outer surface of the sleeve (203); an annular groove is provided in the middle of the outer surface of the fixing column (202); an elastic vortex sheet (205) is position-limitedly engaged inside the annular groove; an outer end of the elastic vortex sheet (205) is position-limitedly engaged with the inner wall of the sleeve (203); a top-view cross-sectional shape of the elastic vortex sheet (205) is a vortex line; the elastic vortex sheet (205) is made of stainless steel; a group of convex strips are provided at both inner and outer ends of the elastic vortex sheet (205); a group of vertical grooves are provided on the inner annular surface of the sleeve (203) and the outer surface of the fixing column (202); the convex strips are fixedly engaged in the vertical grooves.

2. A cutting device for producing steel structures for construction according to claim 1, characterized in that: The fixing mechanism (5) comprises a mounting frame (51) fixedly mounted on the middle part of the top surface of the conveyor platform (1); a telescopic rod (52) is mounted on the top of the mounting frame (51); a pressing plate (53) is fixedly connected to the telescopic end of the telescopic rod (52); a buffer pad (54) is glued to the bottom of the pressing plate (53); a guide column (55) is fixedly connected to the top of the pressing plate (53); and the top end of the guide column (55) extends upward to the top of the mounting frame (51).

3. A cutting device for producing steel structures for construction according to claim 2, characterized in that: Horizontal material discharge platforms are provided on both left and right sides of the inner wall of the conveyor platform (1), and the horizontal material discharge platforms are flush with the top of the transport roller (3) and the upper surface of the support platform (14). A workpiece (4) is placed on the top of the transport roller (3), and the workpiece (4) is pressed and fixed below the pressing plate (53) and the buffer pad (54).

4. A cutting device for producing steel structures for construction according to claim 3, characterized in that: The fixed cylinders (15) are arranged in two groups and are symmetrically distributed front and back on the top of the support platform (14); the two groups of fixed cylinders (15) are combined to form a horizontally open obtuse angle facing left.

5. A cutting device for producing steel structures for construction according to claim 4, characterized in that: The inner diameter of the sealing cylinder (16) is smaller than the inner diameter of the fixed cylinder (15); the hydraulic oil is sealed between the piston column (17) and the sealing column (19); the spring (22) is movably sleeved on the outer surface of the sealing column (19) and is located on a side of the inner cavity of the fixed cylinder (15) that is not filled with hydraulic oil; and the two ends of the spring (22) are elastically connected to the sealing column (19) and the fixed cylinder (15), respectively.

6. A cutting device for producing steel structures for construction according to claim 5, characterized in that: The support roller (12) is composed of a support block (121) fixedly connected to the bottom of the support platform (14) and two groups of mounting columns (122) fixedly connected to the front and rear ends of the support block (121); the mounting columns (122) are rotatably mounted inside the fixed plate (11); one end of the torsion spring (13) is elastically connected to the fixed plate (11); and the other end of the torsion spring (13) is elastically connected to the support block (121).

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