Machining and stamping device and method for angle steel of power transmission tower

Abstract

The invention belongs to the technical field of transmission tower accessory machining, and discloses a machining stamping device and method for transmission tower angle steel. The machining and punching device for the angle steel of the power transmission tower comprises a punching machine, a steel walking frame is arranged on one side of the punching machine, a lifting compression roller assembly and a lower driving roller assembly which are arranged in parallel up and down are installed on the steel walking frame, a concentric-square-shaped frame is fixedly installed on the side, away from the punching machine, of the steel walking frame, and a plurality of carrier rollers are rotationally installed at the top end of the concentric-square-shaped frame; elastic stress application type swing arm assemblies are installed on the front edge and the rear edge of the top end of the frame shaped like the Chinese character'hui ', and abrasive belt grinding assemblies are installed on the sides, close to the vertical center datum plane of the frame shaped like the Chinese character'hui', of the elastic stress application type swing arm assemblies. The L-shaped angle steel obtained after stamping is completed is conveyed to the multiple carrier rollers through cooperation of the lifting pressing roller assembly and the lower driving roller assembly, and the outer wall face of the L-shaped angle steel is subjected to deburring and grinding operation through the abrasive belt grinding assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of processing transmission tower accessories, and in particular relates to a processing punching device and a method for processing transmission tower angle steel. Background Art

[0002] During the preparation and assembly of transmission towers, a variety of L-shaped angle steels of different specifications and shapes are required. The existing L-shaped angle steels use a stamping device to apply pressure through a hydraulic system to move the upper die downward, forcing the angle steel material placed on the lower die to undergo plastic deformation or stamping and cutting, and finally forming the required L-shaped angle steel, thereby processing L-shaped angle steels that meet the design requirements in size and shape to ensure their adaptability in the tower structure. The structure of this type of stamping device is mainly composed of a frame, a stamping die, a hydraulic system, a control system, and a feeding device. Among them, the frame provides basic support, the die is the core of the angle steel forming, the hydraulic system provides the necessary power, the control system realizes automated control operation, and the feeding device ensures the continuous feeding of materials.

[0003] The Chinese utility model patent with patent application number CN202220514468.2 discloses an electric L-shaped angle steel forming device, including: a bottom support adjustment structure, an extrusion molding structure and a limiting structure; wherein, the bottom support structure includes a base, a first slide groove is opened inside the base, a first slider is movably connected inside the first slide groove, and a first lifting automatic telescopic rod is hinged on the first slider, wherein the extrusion molding structure is fixedly installed on the base; wherein, the limiting structure is installed on the bottom support adjustment structure, and the angle steel is extruded and formed by driving the fixed box and the L-shaped hinged pressure plate by starting the second lifting automatic telescopic rod, and the angle steel is adapted to be produced by adjusting the angles of the L-shaped hinged limiting plate and the L-shaped hinged pressure plate.

[0004] The above-mentioned existing L-shaped angle steel forming device of this type can process the plate to prepare it into L-shaped angle steel, but the above-mentioned existing L-shaped angle steel forming device of this type directly performs the discharging operation after completing the preparation of the L-shaped angle steel. Burrs will be generated on the right-angle outer wall surface of the L-shaped angle steel due to bending or stamping and cutting. That is, during the cold bending forming or stamping and cutting process, the metal material undergoes a complex stress-strain process. When the bending radius R is less than the critical value, the outer metal fiber is subjected to a tensile stress exceeding the yield strength, resulting in grain slip and dislocation movement. At this time, when the stress exceeds the material fracture limit, microcracks will be generated on the outer surface and expand to form burrs. At this time, it is necessary to polish and refine it again, and the polishing process increases the production cycle. Taking a typical production line as an example, the bending speed can reach 12 pieces / minute, while manual polishing can only process 6-8 pieces / minute, forming a production capacity bottleneck. At this time, the overall production process of the L-shaped angle steel is restricted, and the efficient production of the stamping and forming equipment cannot be fully utilized. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a processing and stamping device and method for angle steel of transmission tower. The L-shaped angle steel punched by a punching machine is sent to the rollers of the return frame through the cooperation of the lifting and pressing roller assembly and the lower active roller assembly, and the L-shaped angle steel is continuously sent out of the punching machine. During the sending process, the elastic force-applying swing arm assembly presses the sanding belt grinding assembly against the right-angle outer wall surface of the L-shaped angle steel for burr removal or polishing operations, so as to achieve synchronous stamping, feeding, burr removal and polishing, thereby solving the problems raised in the above-mentioned background technology.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: A processing and stamping device for angle steel of transmission tower includes a punching machine. A walking steel frame is arranged on one side of the punching machine. An upper and lower parallel arranged lifting and pressing roller assembly and a lower active roller assembly are installed on the walking steel frame, and a material conveying channel is arranged between the lifting and pressing roller assembly and the lower active roller assembly; A return frame is fixedly installed on the side of the walking steel frame away from the punching machine. A plurality of rollers are rotatably installed at the top of the return frame. Elastic force-applying swing arm assemblies are installed at the front and rear edge positions of the top of the return frame. A sanding belt grinding assembly is installed on the side of the elastic force-applying swing arm assembly close to the vertical central reference plane of the return frame. The punching machine is used for punching the L-shaped angle steel. The lifting and pressing roller assembly and the lower active roller assembly cooperate to convey the L-shaped angle steel so that the L-shaped angle steel is conveyed onto a plurality of rollers. The sanding belt grinding assembly is started to perform deburring and grinding operations on the outer wall surface of the L-shaped angle steel.

[0007] The following is a further optimization of the above technical solutions of the present invention: The elastic force-applying swing arm assembly includes a plurality of V-shaped plates fixedly installed at the same side edge position of the top of the return frame. One end of the top of the V-shaped plate is hinged with a swing arm monomer; A bent portion is integrally formed at the other end of the V-shaped plate. An elastic hinge assembly is arranged between the bent portion and the end of the swing arm monomer away from the V-shaped plate. The sanding belt grinding assembly is installed on the swing arm monomer on the same side.

[0008] Further optimization: The elastic hinge assembly includes an outer threaded rod slidably installed on the bent portion. A right-angle joint rod is fixed at one end of the outer threaded rod close to the swing arm monomer. The right-angle joint rod and one end of the swing arm monomer are hinged to each other. A nut head is threadedly installed on the outer threaded rod below the bent portion. A spring is sleeved on the outer threaded rod above the bent portion. The two ends of the spring are respectively abutted against the right-angle joint rod and the bent portion.

[0009] Further optimization: The abrasive belt grinding assembly includes a C-port frame fixedly installed between two swing arm units, a driving pulley and a driven pulley rotatably installed at the same edge position at the top of the C-port frame, an abrasive belt body sleeved on the driving pulley and the driven pulley, and a support plate installed at one side edge position at the top of the C-port frame for supporting the inner side surface of the abrasive belt body; A motor is installed on the top wall of the C-port frame, and the power output end of the motor is fixedly connected to the bottom end of the driving pulley.

[0010] Further optimization: A tension pulley is movably installed on the C-port frame inside the inner side of the abrasive belt body, and a link-type tensioner for driving the tension pulley to swing is installed on the C-port frame.

[0011] Further optimization: The lifting and pressing roller assembly includes a roller frame slidably installed inside the walking steel frame, an upper belt groove pressing roller rotatably installed in the middle of the roller frame, a lifting automatic telescopic rod fixedly installed at the top of the walking steel frame, and the telescopic end of the lifting automatic telescopic rod penetrates through the top of the walking steel frame and is fixedly connected to the top end of the roller frame.

[0012] Further optimization: The lower driving roller assembly includes a lower belt groove pressing roller rotatably installed inside the walking steel frame below the upper belt groove pressing roller, a driving member fixedly installed on the walking steel frame, and the power output end of the driving member is in transmission connection with the lower belt groove pressing roller.

[0013] Further optimization: A steel plate is fixedly installed on the outer wall of the walking steel frame away from the punching machine, round head steel columns extending upward are detachably installed at the front and rear positions at the top of the steel plate, and a guiding gap part for the L-shaped angle steel to pass through is arranged between the two round head steel columns.

[0014] Further optimization: The abrasive belt grinding assembly is rotatably connected to the elastic force-adding swing arm assembly through a support shaft, a positioning vertical plate is fixedly installed on the elastic force-adding swing arm assembly, an arc-shaped positioning groove is formed in the positioning vertical plate, and a fastening component for positioning the inclination angle of the abrasive belt grinding assembly is arranged between the arc-shaped positioning groove and the abrasive belt grinding assembly.

[0015] The present invention also provides a processing and stamping method for the angle steel of a transmission tower, based on the above-mentioned processing and stamping device for the angle steel of a transmission tower, including the following steps: S101: Place the pre-prepared L-shaped angle steel at the feeding port of the punching machine, and then start the punching machine to start stamping and forming. The punching machine applies high pressure to the L-shaped angle steel through the upper and lower dies for stamping and forming; S102: After stamping is completed, the L-shaped angle steel is conveyed through the cooperation of the lifting and pressing roller assembly and the lower driving roller assembly. During stamping processing and feeding, the lower driving roller assembly is in a shutdown state during the downward stamping stage of the punching machine. After the punching machine completes the punching action, the lower driving roller assembly continues to drive the L-shaped angle steel to move; S103: After the L-shaped angle steel is sent out of the stamping machine and the walking steel frame, the symmetrically arranged elastic force-applying swing arm assemblies drive the sand belt grinding assembly to press on the right-angled outer wall surface of the L-shaped angle steel and perform burr removal or grinding and polishing operations; S104: After the grinding is completed, the staff conducts quality inspection on each L-shaped angle steel. The L-shaped angle steels that pass the inspection will be sent to the packing area.

[0016] The present invention adopts the above technical solutions and has the following beneficial effects: 1. In the present invention, the lifting and pressing roller assembly, the lower-mounted driving roller assembly, the return-shaped frame, the supporting rollers, the symmetrically arranged elastic force-applying swing arm assemblies and the sand belt grinding assembly cooperate with each other to realize the synchronous stamping, feeding and burr removal processes for the L-shaped angle steel; among them, through the cooperative design of the lifting and pressing roller assembly and the lower-mounted driving roller assembly in the integrated solution, the L-shaped angle steel formed by stamping can be continuously conveyed without secondary positioning. At the same time, the elastic force-applying swing arm assembly can drive the sand belt grinding assembly to be in real-time contact with the outer wall surface of the L-shaped angle steel, and perform grinding operations through the sand belt grinding assembly, realizing a streamlined operation mode of "forming - conveying - fine repair", eliminating the physical interval and time delay between processes, making the production line rhythm completely dominated by the stamping cycle, and the synchronism between the sand belt grinding assembly and the stamping action can avoid the production capacity loss caused by process switching in the traditional process, especially suitable for large-scale continuous production scenarios.

[0017] 2. In the present invention, through the cooperative work of the lifting and pressing roller assembly and the lower-mounted driving roller assembly, the L-shaped angle steel is conveyed and ground under constant mechanical constraints, effectively suppressing the free deformation of the workpiece. The adaptive pressing mechanism of the elastic force-applying swing arm assembly can compensate in real time for the dimensional fluctuations caused by stamping tolerances or material springback, ensuring that the sand belt body maintains stable contact with the right-angled outer wall surface of the L-shaped angle steel, realizing a production method of coordinated operation of workpiece forming and correction, moving the quality intervention node forward to the source of burr generation, facilitating the removal operation of burrs, and significantly improving the consistency of the surface treatment of the L-shaped angle steel.

[0018] The present invention will be further described below in conjunction with the drawings and embodiments. Description of the Drawings

[0019] Figure 1 Is the three-dimensional view of the overall structure in Embodiment 1 of the present invention Figure 1 ; Figure 2 Is the three-dimensional view of the overall structure in Embodiment 1 of the present invention Figure 2 ; Figure 3 Is the front view of the overall structure of Embodiment 1 of the present invention; Figure 4 Is the three-dimensional sectional view of the overall structure in Embodiment 1 of the present invention; Figure 5 Schematic diagram of the structure at the position of the lower active roller assembly in Embodiment 1 of the present invention; Figure 6 Schematic diagram of the structure at the position of the elastic force - adding swing arm assembly in Embodiment 1 of the present invention; Figure 7 Schematic diagram of the structure of the sand - belt grinding assembly in Embodiment 1 of the present invention; Figure 8 Schematic diagram of the structure of the C - port frame in Embodiment 1 of the present invention; Figure 9 Schematic diagram of the structure at the position of the positioning vertical plate in Embodiment 2 of the present invention; Figure 10 is Figure 9 partial enlarged view at A in

[0020] In the figure: 1 - punching machine; 2 - walking steel frame; 201 - steel plate; 202 - round - head steel column; 203 - guiding gap part; 3 - lifting and pressing roller assembly; 301 - roller frame; 302 - upper grooved pressing roller; 303 - lifting automatic telescopic rod; 4 - lower active roller assembly; 401 - lower grooved pressing roller; 402 - driving part; 5 - PLC control panel; 6 - loop - shaped frame; 7 - supporting roller; 701 - T - shaped steel sleeve; 8 - elastic force - adding swing arm assembly; 801 - V - port plate; 802 - swing arm unit; 803 - bending part; 804 - external threaded rod; 805 - right - angle joint rod; 806 - spring; 807 - nut head; 9 - sand - belt grinding assembly; 901 - C - port frame; 902 - driving pulley; 903 - driven pulley; 904 - supporting plate; 905 - sand - belt body; 906 - motor; 907 - tensioning pulley; 908 - link - type tensioner; 9081 - fan - shaped hollow groove; 9082 - bent arm; 9083 - tensioning automatic telescopic rod; 11 - positioning vertical plate; 1101 - arc - shaped positioning groove; 1102 - positioning bolt; 1103 - positioning nut. Detailed implementation manners

[0021] As Figures 1-4 shown, a processing and punching device for angle steel of a transmission tower includes a punching machine 1. A walking steel frame 2 is arranged on one side of the punching machine 1. An upper - and - lower parallel - arranged lifting and pressing roller assembly 3 and a lower active roller assembly 4 are installed on the walking steel frame 2, and a material - conveying channel is arranged between the lifting and pressing roller assembly 3 and the lower active roller assembly 4; A loop - shaped frame 6 is fixedly installed on the side of the walking steel frame 2 away from the punching machine 1. A plurality of supporting rollers 7 are rotatably installed at the top of the loop - shaped frame 6. The plurality of supporting rollers 7 are arranged in parallel and at equal intervals. Elastic force - adding swing arm assemblies 8 are installed at the front and rear edge positions of the top of the loop - shaped frame 6. A sand - belt grinding assembly 9 is installed on the side of the elastic force - adding swing arm assembly 8 close to the vertical central reference plane of the loop - shaped frame 6.

[0022] In this embodiment, the L-shaped angle steel to be processed and produced is fed into the feed port of the punching machine 1. At this time, the punching machine 1 is used to perform a punching operation on the L-shaped angle steel. The lifting and lowering roller assembly 3 and the lower active roller assembly 4 cooperate to convey the L-shaped angle steel, so that the L-shaped angle steel is conveyed to a plurality of rollers 7. The belt grinding assembly 9 is started to perform a deburring and grinding operation on the outer wall surface of the L-shaped angle steel.

[0023] In this embodiment, the axis of the roller 7 is arranged perpendicular to the conveying direction of the L-shaped angle steel, and the two ends of the roller 7 are rotatably connected to bearing seats, which are fixedly installed on the circular frame 6. The bearing seats are used to rotatably install the roller 7 on the circular frame 6, which is convenient for assembly and installation.

[0024] T-shaped steel sleeves 701 are fixedly installed on the outer surface of the roller 7 near its two ends. The two symmetrical T-shaped steel sleeves 701 on the roller 7 are used to limit the left and right bottom edges of the L-shaped angle steel, thereby further reducing the deviation of the L-shaped angle steel during transportation.

[0025] Multiple rollers 7 are used to support the L-shaped angle steel sent out from the lifting and pressing roller assembly 3 and the lower active roller assembly 4. The equally spaced rotating rollers 7 construct a continuous supporting surface. The advantage is that it can actively suppress the flexural deformation of long workpieces and ensure that the L-shaped angle steel is evenly supported throughout the entire length, eliminating the middle sagging phenomenon caused by its own weight.

[0026] In this embodiment, the roller 7 is an unpowered roller, and the roller 7 can rotate freely to support the L-shaped angle steel to move.

[0027] In addition to the present embodiment, the roller 7 can also be a powered roller. A driving motor is installed on the circular frame 6. The power output end of the driving motor is connected to each roller through a transmission component, so as to drive each roller to rotate in the same direction, thereby assisting in driving the L-shaped angle steel to move. The transmission component is a prior art, and can adopt a pulley, belt drive, sprocket, chain drive, gear set drive, etc.

[0028] like Figure 5 As shown, the lifting and lowering roller assembly 3 includes a roller frame 301 slidably installed inside the steel walking frame 2, an upper grooved pressure roller 302 rotatably installed in the middle of the roller frame 301, and a lifting automatic telescopic rod 303 is fixedly installed on the top of the steel walking frame 2. The telescopic end of the lifting automatic telescopic rod 303 passes through the top of the steel walking frame 2 and is fixedly connected to the top of the roller frame 301.

[0029] In this embodiment, the telescopic end of the automatic lifting telescopic rod 303 is slidably connected to the top of the steel walking frame 2. The automatic lifting telescopic rod 303 is started to extend or retract its telescopic end. The telescopic end of the automatic lifting telescopic rod 303 can drive the roller frame 301 and the upper grooved pressure roller 302 to move up and down, thereby adjusting the height position of the upper grooved pressure roller 302 for easy use.

[0030] In this embodiment, the roller frame 301 is vertically movable, and the roller frame 301 and the steel walking frame 2 can be slidably connected through a guide rod or a slide rail slider assembly.

[0031] In this embodiment, bearings are respectively connected to the shaft heads at both ends of the upper grooved pressure roller 302, and the bearings are installed on the roller frame 301. The two ends of the upper grooved pressure roller 302 are rotatably connected to the roller frame 301 through the bearings.

[0032] With this design, the cooperation of the lifting and lowering pressure roller assembly 3 and the lower active roller assembly 4 can be used to transport the L-shaped angle steel that has been stamped. The lifting automatic telescopic rod 303 is started to extend its telescopic end. At this time, the telescopic end of the lifting automatic telescopic rod 303 drives the roller frame 301 and the upper grooved pressure roller 302 to move downward until the bottom end of the upper grooved pressure roller 302 contacts the right-angle top edge of the L-shaped angle steel. During this process, the downward pressure of the upper grooved pressure roller 302 needs to be controlled to avoid deformation of the L-shaped angle steel due to excessive local pressure.

[0033] In this embodiment, the lifting automatic telescopic rod 303 adopts one of a hydraulic cylinder, a telescopic cylinder, and an electric telescopic rod.

[0034] The lower active roller assembly 4 is composed of a lower grooved pressure roller 401 and a driving member 402. The lower grooved pressure roller 401 is rotatably installed inside the steel walking frame 2 below the upper grooved pressure roller 302. The driving member 402 is fixedly installed on one side outer wall of the steel walking frame 2. The power output end of the driving member 402 is transmission-connected to one end of the lower grooved pressure roller 401.

[0035] In this embodiment, the driving member 402 may be a reduction motor, and the power output end of the reduction motor is directly connected to one end of the lower grooved pressure roller 401 through a coupling.

[0036] In this design, the driving member 402 is started to output rotational power. At this time, the power output end of the driving member 402 drives the lower grooved pressure roller 401 to rotate, and the lower grooved pressure roller 401 rotates and is used to transport the L-shaped angle steel in cooperation with the upper grooved pressure roller 302.

[0037] On the outer wall of the steel frame 2 away from the punching machine 1, a steel plate 201 is fixedly installed. At the front and rear positions of the top of the steel plate 201, round head steel columns 202 extending upward are detachably installed. A guiding gap part 203 for the L-shaped angle steel to pass through is arranged between the two round head steel columns 202.

[0038] In this embodiment, a plurality of installation holes are arranged at intervals on the steel plate 201. The two round head steel columns 202 are fixedly installed in the corresponding installation holes by means of threaded connection. The distance and position between the two round head steel columns 202 can be adjusted through the plurality of installation holes, so as to realize the adjustment of the width of the guiding gap part 203, which is suitable for guiding and conveying L-shaped angle steels of various models.

[0039] With such a design, when the end of the L-shaped angle steel enters between the upper grooved roller 302 and the lower grooved roller 401, the upper grooved roller 302 is used to apply pressure to the L-shaped angle steel, so that the L-shaped angle steel is pressed on the lower grooved roller 401. Then the staff starts the driving part 402, and the driving part 402 outputs rotational power to drive the lower grooved roller 401 to rotate. The lower grooved roller 401 and the upper grooved roller 302 cooperate to convey the L-shaped angle steel, so that the L-shaped angle steel moves to the roller 7 at the return frame 6.

[0040] In this embodiment, groove-shaped textures are arranged on the outer circumferential surfaces of the lower grooved roller 401 and the upper grooved roller 302. The groove-shaped textures can increase the friction coefficient to prevent slipping, and can also avoid scratching the surface of the material. At the same time, the downward pressure of the lifting and pressing roller assembly 3 can effectively suppress the vibration of the material and provide a workpiece with accurate position for the subsequent process.

[0041] As Figure 6 、 Figure 7 and Figure 8 shown, the elastic force adding type swing arm assembly 8 includes a plurality of V-shaped plate 801 fixedly installed at the same side edge position of the top of the return frame 6. One of the tops of the V-shaped plate 801 is hinged with a swing arm monomer 802; a bent part 803 is integrally formed at the other end of the V-shaped plate 801, and an elastic hinge assembly is arranged between the bent part 803 and the end of the swing arm monomer 802 away from the V-shaped plate 801; the sanding belt grinding assembly 9 is installed on the swing arm monomer 802 on the same side.

[0042] In this embodiment, the number of V-shaped plates 801 at the same side edge position of the top of the return frame 6 is two, and the two V-shaped plates 801 are arranged in parallel and at intervals, and the two V-shaped plates 801 are used for hinging and installing two swing arm monomers 802.

[0043] The elastic hinge assembly includes an external threaded rod 804 slidably mounted on the bent portion 803. One end of the external threaded rod 804 close to the swing arm unit 802 is fixed with a right-angle joint rod 805. The right-angle joint rod 805 and one end of the swing arm unit 802 are hinged to each other. A nut head 807 is threadedly mounted on the external threaded rod 804 below the bent portion 803. A spring 806 is sleeved on the external threaded rod 804 above the bent portion 803. The two ends of the spring 806 are respectively abutted against the right-angle joint rod 805 and the bent portion 803.

[0044] With such a design, the contact pressure of the sanding belt grinding assembly 9 on the outer wall surface of the L-shaped angle steel can be adjusted through the elastic hinge assembly. The operator rotates the nut head 807 to adjust the position of the nut head 807 on the external threaded rod 804. Taking the operation of screwing down the nut head 807 as an example, the external threaded rod 804 can move upward by a certain distance. At this time, the spring 806 is gradually expanded, and then the bottom end of the swing arm unit 802 swings around the V-shaped plate 801 and approaches the vertical central reference plane of the return frame 6, so that the sanding belt part of the sanding belt grinding assembly 9 is attached to the outer wall surface of the L-shaped angle steel.

[0045] At this time, the left and right symmetric elastic force-adding swing arm assemblies 8 cooperate with each other to form a wrapped force application mode, ensuring that the grinding force always acts perpendicular to the right-angle outer wall of the L-shaped angle steel, avoiding workpiece offset caused by unilateral pressure application. At the same time, the elastic force-adding swing arm assembly 8 can also provide buffer protection when encountering sudden resistance, thereby preventing the sanding belt from being overloaded and broken, and also avoiding over-grinding the workpiece surface.

[0046] In addition to this embodiment, the elastic hinge assembly can also adopt a gas spring or an electric telescopic rod. Taking the electric telescopic rod as an example, the two ends of the electric telescopic rod are respectively hinged to the bent portion 803 and the end of the swing arm unit 802 far from the V-shaped plate 801. The electric telescopic rod works to drive the swing arm unit 802 to swing, thereby realizing the adjustment of the position of the sanding belt grinding assembly 9 for convenient use.

[0047] The sanding belt grinding assembly 9 includes a C-shaped frame 901 fixed between two swing arm units 802, a driving pulley 902 and a driven pulley 903 rotatably mounted at the same edge position at the top end of the C-shaped frame 901. A sanding belt body 905 is sleeved on the driving pulley 902 and the driven pulley 903.

[0048] A motor 906 is mounted on the top wall of the C-shaped frame 901. The power output end of the motor 906 is fixedly connected to the bottom end of the driving pulley 902.

[0049] When the motor 906 is started, it outputs rotational power to drive the driving pulley 902 to rotate. The driving pulley 902 and the driven pulley 903 cooperate to support the sanding belt body 905 to move in a circular motion. At this time, the sanding belt body 905 performs the grinding operation.

[0050] At one side edge position of the top end of the C-shaped frame 901, a support plate 904 is installed. The support plate 904 contacts the inner side surface of the abrasive belt body 905, and is used to support the inner side surface of the abrasive belt body 905, ensuring that the abrasive belt body 905 can better contact the outer wall surface of the L-shaped angle steel, improving the grinding effect, and ensuring that the grinding area accurately covers the burr part.

[0051] On the inner side of the abrasive belt body 905, a tension wheel 907 is movably installed on the C-shaped frame 901. The tension wheel 907 contacts the inner side surface of the abrasive belt body 905, and a link-type tensioner 908 for driving the tension wheel 907 to swing is installed on the C-shaped frame 901.

[0052] With such a design, the abrasive belt body 905 is sleeved outside the driving pulley 902, the driven pulley 903, the support plate 904 and the tension wheel 907; the driving pulley 902, the driven pulley 903, the support plate 904 and the tension wheel 907 cooperate with each other to support the abrasive belt body 905 to rotate in a ring, and the link-type tensioner 908 is activated to drive the tension wheel 907 to swing. At this time, the tension wheel 907 swings to adjust the tension force on the abrasive belt body 905, ensuring that the abrasive belt body 905 can rotate stably in a ring.

[0053] After the abrasive belt body 905 contacts the outer wall surface of the L-shaped angle steel, the motor 906 drives the driving pulley 902 to rotate. At this time, through the cooperation of the driven pulley 903 and the tension wheel 907, the abrasive belt body 905 rotates. The continuous movement of the abrasive belt body 905 forms a uniform grinding effect. Compared with a fixed grinding tool, the abrasive belt grinding assembly 9 has better surface grinding ability.

[0054] The link-type tensioner 908 includes a fan-shaped hollow groove 9081 opened on the C-shaped frame 901. The tension wheel 907 is arranged at the position of the fan-shaped hollow groove 9081. One side of the top wall of the C-shaped frame 901 where the fan-shaped hollow groove 9081 is located is rotatably installed with a bent arm 9082. One end of the bent arm 9082 is rotatably connected to the tension wheel 907, and the other end of the bent arm 9082 is connected with a tension automatic telescopic rod 9083. The installation end of the tension automatic telescopic rod 9083 is hinged and installed on the C-shaped frame 901.

[0055] With such a design, when the tension automatic telescopic rod 9083 is activated to make its telescopic end extend or retract, the telescopic end of the tension automatic telescopic rod 9083 can drive the bent arm 9082 to swing. The swing of the bent arm 9082 drives the tension wheel 907 to move in the fan-shaped hollow groove 9081, realizing the adjustment of the position of the tension wheel 907, and further used to adjust the tension force of the tension wheel 907 on the abrasive belt body 905, ensuring that the abrasive belt body 905 has sufficient tension and improving the grinding effect.

[0056] In this embodiment, the tensioning automatic telescopic rod 9083 is one of a hydraulic cylinder, a telescopic cylinder, and an electric telescopic rod.

[0057] A PLC control panel 5 is installed on the outer side wall of the punching machine 1. The control output terminals of the PLC control panel 5 are electrically connected to the control input terminals of the punching machine 1, the lifting and pressure roller assembly 3, the lower active roller assembly 4, and the sand belt grinding assembly 9 respectively.

[0058] In this embodiment, the PLC control panel 5 is a prior art. Its overall structure includes a PLC controller. The output terminal and the input terminal of the PLC controller are bidirectionally electrically connected to a control screen, and the control screen is used to display control parameters and perform adjustment operations on the control parameters.

[0059] The control output terminal of the PLC control panel 5 is electrically connected to the control terminal of the punching machine 1. The PLC control panel 5 outputs a control signal to control the punching machine 1 to perform a punching and forming operation.

[0060] In this embodiment, the punching machine 1 is a prior art. Its specific structure includes a punching machine body. A hydraulic cylinder is installed in the punching machine body. An upper die is installed on the telescopic end of the hydraulic cylinder. A lower die is installed directly below the upper pressure die in the punching machine body. The hydraulic cylinder is started to drive the upper die to move downward and cooperate with the lower die to perform punching and forming on the workpiece.

[0061] The control output terminal of the PLC control panel 5 is electrically connected to the control input terminal of the lifting automatic telescopic rod 303 of the lifting and pressure roller assembly 3. The PLC control panel 5 outputs a control signal to control the lifting automatic telescopic rod 303 to work at a set lifting distance and direction. The lifting automatic telescopic rod 303 is started to drive the roller frame 301 and the upper grooved roller 302 to perform lifting movement, for adjusting the height position of the upper grooved roller 302.

[0062] The control output terminal of the PLC control panel 5 is electrically connected to the control input terminal of the driving member 402 of the lower active roller assembly 4. The PLC control panel 5 outputs a control signal to control the driving member 402 to work at a set steering direction, rotation speed, angle, and start-stop time. The driving member 402 is started to drive the lower grooved roller 401 to rotate, and cooperate with the upper grooved roller 302 to convey the L-shaped angle steel.

[0063] The control output terminal of the PLC control panel 5 is electrically connected to the control input terminals of the motor 906 and the link type tensioner 908 of the sand belt grinding assembly 9. The PLC control panel 5 outputs a control signal to control the motor 906 to work at a set steering direction, rotation speed, angle, and start-stop time. The motor 906 works to drive the driving pulley 902 to rotate, and further drives the sand belt body 905 to perform a circular rotation, so that the sand belt body 905 performs a grinding operation.

[0064] The PLC control panel 5 outputs a control signal to control the link-type tensioner 908 to work at a set telescopic distance and direction. The link-type tensioner 908 starts to drive the tensioning wheel 907 to swing for adjusting the tension of the abrasive belt body 905.

[0065] The present invention also provides a processing and stamping method for transmission tower angle steel. Based on the above processing and stamping device for transmission tower angle steel, it includes the following steps: S101: Place the pre-prepared L-shaped angle steel at the feeding port of the stamping machine 1, and then start the stamping machine 1 to start stamping and forming. The stamping machine 1 applies high pressure to the L-shaped angle steel through the upper and lower dies for stamping and forming.

[0066] In the step S101, the upper and lower dies can be selected according to the shape to be stamped. The stamping machine 1 drives the upper die to move downward and cooperate with the lower die to apply high pressure to the L-shaped angle steel for stamping and forming.

[0067] S102: After stamping is completed, the L-shaped angle steel is conveyed through the cooperation of the lifting and pressure roller assembly 3 and the lower active roller assembly 4. During stamping and feeding, the lower active roller assembly 4 is in a stopped state during the downward stamping stage of the stamping machine 1. After the stamping machine 1 completes the stamping action, the lower active roller assembly 4 continues to drive the L-shaped angle steel to move.

[0068] In the step S102, the working principle of the lifting and pressure roller assembly 3 is as follows: The lifting automatic telescopic rod 303 starts and its telescopic end extends. At this time, the telescopic end of the lifting automatic telescopic rod 303 drives the roller frame 301 and the upper grooved pressure roller 302 to move downward until the bottom end of the upper grooved pressure roller 302 contacts the right-angle top edge of the L-shaped angle steel. During this process, the downward pressure on the upper grooved pressure roller 302 needs to be controlled to avoid deformation of the L-shaped angle steel due to excessive local pressure.

[0069] In the step S102, the working principle of the lower active roller assembly 4 is as follows: The driving member 402 starts to output rotational power to drive the lower grooved pressure roller 401 to rotate. The lower grooved pressure roller 401 cooperates with the upper grooved pressure roller 302 to work for conveying the L-shaped angle steel, so that the L-shaped angle steel moves to the supporting roller 7 at the return frame 6.

[0070] S103: After the L-shaped angle steel is sent out of the stamping machine 1 and the walking steel frame 2, the left and right symmetric elastic force-applying swing arm assemblies 8 drive the abrasive belt grinding assembly 9 to press on the right-angle outer wall surface of the L-shaped angle steel and perform deburring or polishing operations.

[0071] In the step S103, the working principle of the elastic force - adding swing arm assembly 8 is as follows: The spring 806 outputs elastic force and acts on the swing arm unit 802. At this time, the bottom end of the swing arm unit 802 swings around the V - shaped plate 801 and approaches the vertical central reference plane of the return - shaped frame 6, so that the abrasive belt body 905 of the abrasive belt grinding assembly 9 adheres to the outer wall surface of the L - shaped angle steel.

[0072] In the step S103, the working principle of the abrasive belt grinding assembly 9 is as follows: After the abrasive belt body 905 contacts the outer wall surface of the L - shaped angle steel, the motor 906 starts to drive the driving pulley 902 to rotate. At this time, through the cooperation of the driven pulley 903 and the tension pulley 907, the abrasive belt body 905 rotates. The continuous movement of the abrasive belt body 905 forms a uniform grinding effect for grinding the outer wall surface of the L - shaped angle steel.

[0073] In the step S103, after the abrasive belt body 905 contacts the outer wall surface of the L - shaped angle steel, the support plate 904 contacts the inner side surface of the abrasive belt body 905 to support the inner side surface of the abrasive belt body 905, ensuring that the abrasive belt body 905 can better contact the outer wall surface of the L - shaped angle steel, improving the grinding effect, and ensuring that the grinding area accurately covers the burr part.

[0074] S104: After the grinding is completed, the staff conducts quality inspection on each L - shaped angle steel. The qualified L - shaped angle steels will be sent to the packing area.

[0075] In this embodiment, after the production is completed, the staff cleans and maintains the punching machine 1 and related assemblies to keep the device in good condition.

[0076] Embodiment 2: As Figure 9 and Figure 10 shown, based on the above - mentioned Embodiment 1, in this Embodiment 2, both side walls of the C - shaped frame 901 are respectively rotatably connected to the corresponding swing arm units 802 through support shafts (not shown in the figure), and the C - shaped frame 901 can swing relative to the swing arm units 802 along the support shafts.

[0077] In this embodiment, one end of the support shaft is fixedly installed on the C - shaped frame 901, and the other end of the support shaft is rotatably connected to the corresponding swing arm unit 802 through a bearing.

[0078] At a position on the swing arm unit 802 close to the C - shaped frame 901, a positioning vertical plate 11 is fixedly installed. An arc - shaped positioning groove 1101 is formed on the positioning vertical plate 11. A fastening assembly for positioning the inclination angle of the C - shaped frame 901 is arranged between the arc - shaped positioning groove 1101 and the C - shaped frame 901.

[0079] The fastening assembly includes a positioning bolt 1102 which is inserted into an arc-shaped positioning groove 1101. One end of the positioning bolt 1102 is fixedly connected to the C-port frame 901. The end of the positioning bolt 1102 away from the C-port frame 901 passes through the arc-shaped positioning groove 1101 and is threadedly connected with a positioning nut 1103, and the positioning nut 1103 abuts against the positioning vertical plate 11.

[0080] With such a design, through the cooperation of the positioning bolt 1102 and the positioning nut 1103, the swing of the C-port frame 901 needs to be manually adjusted. When the inclination angle of the sanding belt grinding assembly 9 needs to be adjusted, the staff can disassemble the positioning nut 1103, and then the staff rotates the C-port frame 901 to make the C-port frame 901 swing with the support shaft as the axis, so as to realize the adjustment of the inclination angle of the sanding belt grinding assembly 9. During the adjustment process, the positioning bolt 1102 moves in the arc-shaped positioning groove 1101. After the adjustment is completed, the staff threads the positioning nut 1103 onto the positioning bolt 1102 and pre-tightens the positioning nut 1103. At this time, the positioning nut 1103 abuts against the positioning vertical plate 11 to position the C-port frame 901, which is convenient for use.

[0081] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A processing and stamping device for angle steel of a transmission tower, characterized in that: It includes a stamping machine (1). On one side of the stamping machine (1), there is a walking steel frame (2). An up-and-down parallel arranged lifting and pressing roller assembly (3) and a lower active roller assembly (4) are installed on the walking steel frame (2). A material conveying channel is arranged between the lifting and pressing roller assembly (3) and the lower active roller assembly (4). On the side of the walking steel frame (2) away from the stamping machine (1), a U-shaped frame (6) is fixedly installed. A plurality of supporting rollers (7) are rotatably installed at the top of the U-shaped frame (6). Elastic force-adding swing arm assemblies (8) are installed at the front and rear edge positions of the top of the U-shaped frame (6). A sand belt grinding assembly (9) is installed on the side of the elastic force-adding swing arm assembly (8) close to the vertical central reference plane of the U-shaped frame (6). The stamping machine (1) is used for stamping an L-shaped angle steel. The lifting and pressing roller assembly (3) and the lower active roller assembly (4) cooperate to convey the L-shaped angle steel so that the L-shaped angle steel is conveyed onto a plurality of supporting rollers (7). The sand belt grinding assembly (9) is started to perform deburring and grinding operations on the outer wall surface of the L-shaped angle steel.

2. The processing and stamping device for angle steel of a transmission tower according to claim 1, characterized in that: The elastic force-adding swing arm assembly (8) includes a plurality of V-shaped plates (801) fixedly installed at the same side edge position of the top of the U-shaped frame (6). A swing arm unit (802) is hingedly installed at one top end of the V-shaped plate (801). A bent portion (803) is integrally formed at the other end of the V-shaped plate (801). An elastic hinge assembly is arranged between the bent portion (803) and the end of the swing arm unit (802) away from the V-shaped plate (801). The sand belt grinding assembly (9) is installed on the swing arm unit (802) on the same side.

3. A processing and stamping device for angle steel of a transmission tower according to claim 2, characterized in that: The elastic hinge assembly includes an outer threaded rod (804) slidably installed on the bent portion (803). A right-angle joint rod (805) is fixed at the end of the outer threaded rod (804) close to the swing arm unit (802). The right-angle joint rod (805) and one end of the swing arm unit (802) are hinged to each other. A nut head (807) is threadedly installed on the outer threaded rod (804) below the bent portion (803). A spring (806) is sleeved on the outer threaded rod (804) above the bent portion (803). The two ends of the spring (806) are respectively abutted against the right-angle joint rod (805) and the bent portion (803).

4. The processing and stamping device for angle steel of a transmission tower according to claim 3, characterized in that: The sand belt grinding assembly (9) includes a C-shaped frame (901) fixedly installed between two swing arm units (802). A driving pulley (902) and a driven pulley (903) rotatably installed at the same side edge position of the top of the C-shaped frame (901). A sand belt body (905) is sleeved on the driving pulley (902) and the driven pulley (903). A support plate (904) for supporting the inner side surface of the sand belt body (905) is installed at one side edge position of the top of the C-shaped frame (901). A motor (906) is installed on the top wall of the C-shaped frame (901). The power output end of the motor (906) is fixedly connected to the bottom end of the driving pulley (902).

5. The processing and stamping device for angle steel of a transmission tower according to claim 4, characterized in that: A tension pulley (907) is movably installed on the inner side of the abrasive belt body (905) on the C-port frame (901), and a link-type tensioner (908) for driving the tension pulley (907) to swing is installed on the C-port frame (901).

6. The processing and stamping device for angle steel of a transmission tower according to claim 1, wherein: The lift pressure roller assembly (3) includes a roller frame (301) slidably installed inside the walking steel frame (2), an upper belt groove pressure roller (302) rotatably installed in the middle of the roller frame (301), a lifting automatic telescopic rod (303) fixedly installed at the top of the walking steel frame (2), and the telescopic end of the lifting automatic telescopic rod (303) penetrates through the top of the walking steel frame (2) and is fixedly connected to the top end of the roller frame (301).

7. A processing and stamping device for angle steel of a transmission tower according to claim 6, characterized in that: The lower active roller assembly (4) includes a lower belt groove pressure roller (401), the lower belt groove pressure roller (401) is rotatably installed inside the walking steel frame (2) below the upper belt groove pressure roller (302), and a driving member (402) is fixedly installed on the walking steel frame (2), and the power output end of the driving member (402) is in transmission connection with the lower belt groove pressure roller (401).

8. A processing and stamping device for angle steel of a transmission tower according to claim 1, characterized in that: A steel plate (201) is fixedly installed on the outer wall of the walking steel frame (2) away from the punching machine (1), round head steel columns (202) extending upward can be detachably installed at the front and rear positions at the top of the steel plate (201), and a guiding gap part (203) for the L-shaped angle steel to pass through is arranged between the two round head steel columns (202).

9. The processing and stamping device for angle steel of a transmission tower according to claim 1, characterized in that: The abrasive belt grinding assembly (9) is rotatably connected to the elastic force adding swing arm assembly (8) through a support shaft, a positioning vertical plate (11) is fixedly installed on the elastic force adding swing arm assembly (8), an arc-shaped positioning groove (1101) is opened on the positioning vertical plate (11), and a fastening component for positioning the inclination angle of the abrasive belt grinding assembly (9) is arranged between the arc-shaped positioning groove (1101) and the abrasive belt grinding assembly (9).

10. A processing and stamping method for angle steel of a transmission tower, based on the processing and stamping device for angle steel of a transmission tower according to any one of claims 1-9, characterized in that: Including the following steps: S101: Place the pre-prepared L-shaped angle steel at the feeding port of the punching machine (1), and then start the punching machine (1) to start punching and forming. The punching machine (1) applies high pressure to the L-shaped angle steel through the upper and lower dies for punching and forming; S102: After punching is completed, the L-shaped angle steel is conveyed through the cooperation of the lift pressure roller assembly (3) and the lower active roller assembly (4). During punching and feeding, the lower active roller assembly (4) is in a stopped state during the downward punching stage of the punching machine (1), and after the punching machine (1) completes the punching action, the lower active roller assembly (4) continues to drive the L-shaped angle steel to move; S103: After the L-shaped angle steel is sent out of the punching machine (1) and the walking steel frame (2), the left and right symmetric elastic force adding swing arm assemblies (8) drive the abrasive belt grinding assembly (9) to press on the right-angled outer wall surface of the L-shaped angle steel and perform deburring or polishing operations; S104: After grinding is completed, the staff inspects the quality of each L-shaped angle steel, and the qualified L-shaped angle steels will be sent to the packing area.

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