A processing and punching device and method for transmission tower angle steel

Abstract

The present invention belongs to the technical field of processing accessories of power transmission towers, and discloses a processing and punching device for power transmission tower angle steel and a method thereof; wherein the processing and punching device for power transmission tower angle steel comprises a punching machine, a steel frame is provided on one side of the punching machine, a lifting and lowering pressure roller assembly and a lower active roller assembly arranged in parallel are installed on the steel frame, a circular frame is fixedly installed on the side of the steel frame away from the punching machine, a plurality of rollers are rotatably installed on the top of the circular frame, elastic force-enhancing swing arm assemblies are installed at the front and rear edge positions of the top of the circular frame, and a sand belt grinding assembly is installed on the side of the elastic force-enhancing swing arm assembly close to the vertical center reference plane of the circular frame. In the present invention, the punching machine is used to perform a punching operation on L-shaped angle steel, and the L-shaped angle steel after punching is transported to the plurality of rollers by the cooperation of the lifting and lowering pressure roller assembly and the lower active roller assembly, and the sand belt grinding assembly performs a deburring and grinding operation on the outer wall surface of the L-shaped angle steel.

Description

Technical Field

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

[0002] During the preparation and assembly process 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 the 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. In this way, L-shaped angle steels that meet the design requirements of size and shape are processed 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 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, and 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 by starting the second lifting automatic telescopic rod, the fixed box and the L-shaped hinged pressure plate are driven to extrude the angle steel, and the L-shaped hinged limiting plate and the L-shaped hinged pressure plate can adjust their own angles to adapt to the production of L-shaped angle steels of different thicknesses.

[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 directly performs the discharging operation after the L-shaped angle steel is prepared. 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 fracture limit of the material, 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 transmission tower angle steel. The L-shaped angle steel punched out by the punching machine is sent to the roller of the circular frame by the cooperation of the lifting and lowering roller assembly and the lower active roller assembly, and the L-shaped angle steel is continuously fed out of the punching machine. During the feeding process, the elastic force-applying swing arm assembly causes the sanding belt grinding assembly to press on the right-angle outer wall surface of the L-shaped angle steel and perform burr removal or grinding and polishing operations to achieve synchronous stamping, feeding, burr removal and grinding and polishing, thereby solving the problems raised in the above-mentioned background technology.

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

[0007] A processing and punching device for transmission tower angle steel comprises a punching machine, a steel frame is provided on one side of the punching machine, a lifting and lowering pressure roller assembly and a lower active roller assembly arranged in parallel above and below are installed on the steel frame, and a material feeding channel is provided between the lifting and lowering pressure roller assembly and the lower active roller assembly; a circular frame is fixedly installed on the side of the steel frame away from the punching machine, a plurality of rollers are rotatably installed on the top of the circular frame, elastic force-added swing arm assemblies are installed at the front and rear edge positions of the top of the circular frame, and a sanding belt grinding assembly is installed on the side of the elastic force-added swing arm assembly close to the vertical center reference plane of the circular frame; the punching machine is used to punch the L-shaped angle steel, the lifting and lowering pressure roller assembly and the lower active roller assembly work together to convey the L-shaped angle steel, so that the L-shaped angle steel is conveyed to the plurality of rollers, and the sanding belt grinding assembly is started to deburr and grind the outer wall surface of the L-shaped angle steel.

[0008] The following is a further optimization of the above technical solution by the present invention:

[0009] The elastic force-enhancing swing arm assembly includes a plurality of V-mouth plates fixedly mounted at the edge position of the same side of the top of the circular frame, and a swing arm unit is hingedly mounted on the top of one of the V-mouth plates; a bending portion is integrally formed on the other end of the V-mouth plate, and an elastic hinge component is arranged between the bending portion and the end of the swing arm unit away from the V-mouth plate; the sanding belt grinding assembly is mounted on the swing arm unit on the same side.

[0010] Further optimization: the elastic hinge assembly includes an externally threaded rod slidably mounted on the bending part, a right-angle joint rod is fixed to one end of the externally threaded rod close to the swing arm unit, the right-angle joint rod and one end of the swing arm unit are hinged to each other, a nut head is threadedly mounted on the externally threaded rod below the bending part, and a spring is mounted on the externally threaded rod above the bending part, and the two ends of the spring are respectively connected to the right-angle joint rod and the bending part.

[0011] Further optimization: the belt grinding assembly includes a C-mouth frame fixedly installed between two swing arm units, a driving pulley and a driven pulley rotatably installed at the same edge position of the top of the C-mouth frame, the driving pulley and the driven pulley are sleeved with a sanding belt body, and a support plate for supporting the inner side of the sanding belt body is installed at one side edge position of the top of the C-mouth frame; a motor is installed on the top wall of the C-mouth frame, and the power output end of the motor is fixedly connected to the bottom end of the driving pulley.

[0012] Further optimization: A tensioning wheel is movably mounted on the C-mouth frame on the inner side of the sanding belt body, and a connecting rod tensioner for driving the tensioning wheel to swing is mounted on the C-mouth frame.

[0013] Further optimization: the lifting and lowering pressure roller assembly includes a roller frame slidably installed inside the steel walking frame, an upper grooved pressure roller rotatably installed in the middle of the roller frame, and a lifting automatic telescopic rod fixedly installed on the top of the steel walking frame. The telescopic end of the lifting automatic telescopic rod passes through the top of the steel walking frame and is fixedly connected to the top of the roller frame.

[0014] Further optimization: the lower active roller assembly includes a lower grooved pressure roller, which is rotatably installed inside the steel walking frame below the upper grooved pressure roller. A driving member is fixedly installed on the steel walking frame, and the power output end of the driving member is transmission-connected to the lower grooved pressure roller.

[0015] Further optimization: A steel plate is fixedly installed on the outer wall of the steel frame away from the punching machine, and upward extending round-headed steel columns can be removably installed at the front and rear positions of the top of the steel plate. A guide gap is provided between the two round-headed steel columns for the L-shaped angle steel to pass through.

[0016] Further optimization: the belt grinding assembly is rotatably connected to the elastic force-enhancing swing arm assembly through a support shaft, a positioning vertical plate is fixedly installed on the elastic force-enhancing swing arm assembly, an arc-shaped positioning groove is provided on the positioning vertical plate, and a fastening component for positioning the inclination angle of the belt grinding assembly is provided in the arc-shaped positioning groove and between the belt grinding assembly.

[0017] The present invention also provides a method for processing and punching angle steel for a power transmission tower, based on the above-mentioned processing and punching device for the power transmission tower angle steel, comprising the following steps:

[0018] S101: The pre-prepared L-shaped angle steel is placed at the feed port of the punching machine, and then the punching machine is started to start punching and forming. The punching machine applies high pressure to the L-shaped angle steel through the upper and lower dies to punch and form;

[0019] S102: After the stamping is completed, the L-shaped angle steel is conveyed by the cooperation of the lifting and lowering pressure roller assembly and the lower active roller assembly. During the stamping process and feeding, the lower active roller assembly is in a stopped state during the downward stamping stage of the stamping machine. After the stamping machine completes the stamping action, the lower active roller assembly continues to drive the L-shaped angle steel to move;

[0020] S103: After the L-shaped angle steel is sent out of the punching machine and the steel carriage, the left and right symmetrical elastic force-added swing arm assembly drives the sanding belt grinding assembly to press on the right-angle outer wall surface of the L-shaped angle steel and perform burr removal or grinding and polishing operations;

[0021] S104: After polishing, the staff will conduct a quality inspection on each L-shaped angle steel. The L-shaped angle steels that pass the inspection will be sent to the packaging area.

[0022] The present invention adopts the above technical solution and has the following beneficial effects:

[0023] 1. In the present invention, the lifting and lowering pressure roller assembly, the lower active roller assembly, the circular frame, the supporting roller, the elastic force-enhancing swing arm assembly symmetrically arranged on the left and right, and the sanding belt grinding assembly work together to realize the synchronous stamping, feeding and burr removal processes of the L-shaped angle steel; the integrated solution uses the coordinated design of the lifting and lowering pressure roller assembly and the lower active roller assembly to enable the stamped L-shaped angle steel to be continuously conveyed without secondary positioning, while the elastic force-enhancing swing arm assembly can drive the sanding belt grinding assembly to fit the outer wall surface of the L-shaped angle steel in real time, and perform grinding operations through the sanding belt grinding assembly, realizing the "forming-conveying-finishing" streamlined operation mode, eliminating the physical intervals and time delays between processes, and making the production line rhythm completely dominated by the stamping cycle, and the synchronization of the sanding belt grinding assembly and the stamping action can avoid the production capacity loss caused by process switching in traditional processes, and is particularly suitable for large-scale continuous production scenarios.

[0024] 2. In the present invention, the coordinated work of the lifting and lowering pressure roller assembly and the lower active roller assembly enables the L-shaped angle steel to be conveyed and polished under constant mechanical constraints, effectively suppressing the free deformation of the workpiece. The adaptive clamping mechanism of the elastic force-enhancing swing arm assembly can compensate for dimensional fluctuations caused by stamping tolerances or material rebound in real time, ensuring that the sanding belt body and the right-angle outer wall surface of the L-shaped angle steel maintain stable contact, realizing a production method of coordinated workpiece forming and correction, moving the quality intervention node forward to the source of burr generation, facilitating burr removal operations, and significantly improving the consistency of L-shaped angle steel surface treatment.

[0025] The present invention will be further described below with reference to the accompanying drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The three-dimensional structure of the overall structure in Example 1 of the present invention Figure 1 ;

[0027] Figure 2 The three-dimensional structure of the overall structure in Example 1 of the present invention Figure 2 ;

[0028] Figure 3 This is a front view of the overall structure of Example 1 of the present invention;

[0029] Figure 4 is a three-dimensional cross-sectional view of the overall structure of Example 1 of the present invention;

[0030] Figure 5 This is a schematic structural diagram of the lower active roller assembly in Example 1 of the present invention;

[0031] Figure 6 This is a schematic structural diagram of the elastic force-applying swing arm assembly in Example 1 of the present invention;

[0032] Figure 7 Schematic diagram of the structure of the abrasive belt grinding assembly in Example 1 of the present invention;

[0033] Figure 8 This is a schematic structural diagram of the C-port frame in Example 1 of the present invention;

[0034] Figure 9 This is a schematic structural diagram of the positioning vertical plate in Example 2 of the present invention;

[0035] Figure 10 for Figure 9 A partial enlarged view of point A in the middle.

[0036] In the figure: 1-stamping machine; 2-steel frame; 201-steel plate; 202-round-head steel column; 203-guide gap; 3-lifting roller assembly; 301-roller frame; 302-upper grooved roller; 303-lifting automatic telescopic rod; 4-lower active roller assembly; 401-lower grooved roller; 402-driving element; 5-PLC control panel; 6-reciprocating frame; 7-supporting roller; 701-T-shaped steel sleeve; 8-elastic force-enhancing swing arm assembly; 801-V-mouth plate; 802-swing arm unit; 803-bending part; 804- Externally threaded rod; 805-right-angle joint rod; 806-spring; 807-nut head; 9-sanding belt grinding assembly; 901-C-mouth frame; 902-driving pulley; 903-driven pulley; 904-support plate; 905-sanding belt body; 906-motor; 907-tensioning pulley; 908-link-type tensioner; 9081-fan-shaped hollow groove; 9082-bend arm; 9083-tensioning automatic telescopic rod; 11-positioning vertical plate; 1101-arc-shaped positioning groove; 1102-positioning bolt; 1103-positioning nut. DETAILED DESCRIPTION

[0037] like Figures 1-4As shown, a processing and punching device for transmission tower angle steel includes a punching machine 1, a steel frame 2 is provided on one side of the punching machine 1, and a lifting and lowering pressure roller assembly 3 and a lower active roller assembly 4 arranged in parallel are installed on the steel frame 2, and a material feeding channel is provided between the lifting and lowering pressure roller assembly 3 and the lower active roller assembly 4; a circular frame 6 is fixedly installed on the side of the steel frame 2 away from the punching machine 1, and a plurality of rollers 7 are rotatably installed on the top of the circular frame 6, and the plurality of rollers 7 are arranged in parallel and at equal intervals, and elastic force-enhancing swing arm assemblies 8 are installed at the front and rear edge positions of the top of the circular frame 6, and a sanding belt grinding assembly 9 is installed on the side of the elastic force-enhancing swing arm assembly 8 close to the vertical center reference plane of the circular frame 6.

[0038] 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 work together to transport the L-shaped angle steel, so that the L-shaped angle steel is transported to multiple 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.

[0039] 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.

[0040] 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.

[0041] Multiple rollers 7 are used to support the L-shaped angle steel sent out from the lifting and pressure roller assembly 3 and the lower active roller assembly 4. The equally spaced rotating rollers 7 construct a continuous support surface. Its 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.

[0042] In this embodiment, the roller 7 is an unpowered roller, and the roller 7 can rotate freely to support the L-shaped angle steel for movement.

[0043] In addition to this embodiment, the roller 7 can also be a powered roller. A drive motor is installed on the circular frame 6. The power output end of the drive motor is connected to each roller through a transmission component 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.

[0044] like Figure 5 As shown, the lifting and lowering pressure 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 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.

[0045] 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. When the automatic lifting telescopic rod 303 is started, 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.

[0046] 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.

[0047] In this embodiment, bearings are connected to the shaft heads at both ends of the upper grooved pressure roller 302 respectively. 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.

[0048] 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.

[0049] In this embodiment, the automatic telescopic rod 303 is a hydraulic cylinder, a telescopic cylinder, or an electric telescopic rod.

[0050] The lower active roller assembly 4 consists 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.

[0051] 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.

[0052] 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.

[0053] A steel plate 201 is fixedly installed on the outer wall of the steel walking frame 2 away from the punching machine 1. Upward-extending round-headed steel columns 202 are detachably installed at the front and rear positions of the top of the steel plate 201. A guide gap 203 for L-shaped angle steel to pass through is provided between the two round-headed steel columns 202.

[0054] In this embodiment, a plurality of installation holes arranged at intervals are provided on the steel plate 201, and two round-headed steel columns 202 are fixedly installed in the corresponding installation holes by means of threaded connections. The spacing and positions between the two round-headed steel columns 202 can be adjusted through the plurality of installation holes, thereby realizing adjustment of the width of the guide gap portion 203, which is suitable for guiding and conveying various types of L-shaped angle steels.

[0055] With this design, when the end of the L-shaped angle steel enters between the upper grooved pressure roller 302 and the lower grooved pressure roller 401, the upper grooved pressure 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 pressure roller 401, and then the staff turns on the driving member 402, and the driving member 402 outputs rotational power to drive the lower grooved pressure roller 401 to rotate, and the lower grooved pressure roller 401 cooperates with the upper grooved pressure roller 302 to transport the L-shaped angle steel, so that the L-shaped angle steel moves to the roller 7 at the circular frame 6.

[0056] In this embodiment, grooved textures are provided on the outer circumferences of the lower grooved pressure roller 401 and the upper grooved pressure roller 302. The grooved textures can increase the friction coefficient to prevent slipping and avoid scratching the surface of the material. At the same time, the downward pressure of the lifting and lowering pressure roller assembly 3 can also effectively suppress material vibration, providing a workpiece with accurate position for subsequent processes.

[0057] like Figure 6 、 Figure 7 and Figure 8 As shown, the elastic force-enhancing swing arm assembly 8 includes a plurality of V-mouth plates 801 fixedly mounted at the edge position of the same side of the top of the circular frame 6, and a swing arm unit 802 is hingedly mounted on the top of one of the V-mouth plates 801; a bending portion 803 is integrally formed on the other end of the V-mouth plate 801, and an elastic hinge component is provided between the bending portion 803 and the end of the swing arm unit 802 away from the V-mouth plate 801; the belt grinding assembly 9 is mounted on the swing arm unit 802 on the same side.

[0058] In this embodiment, there are two V-mouth plates 801 at the same side edge position at the top of the circular frame 6, and the two V-mouth plates 801 are parallel and spaced apart. The two V-mouth plates 801 are used to hingedly install two swing arm units 802.

[0059] The elastic hinge assembly includes an externally threaded rod 804 slidably mounted on the bending portion 803, a right-angle joint rod 805 is fixed to one end of the externally 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 mounted on the externally threaded rod 804 below the bending portion 803, and a spring 806 is mounted on the externally threaded rod 804 above the bending portion 803, and both ends of the spring 806 are respectively in contact with the right-angle joint rod 805 and the bending portion 803.

[0060] With this design, the contact pressure of the sanding belt grinding assembly 9 on the outer wall of the L-shaped angle steel can be adjusted through the elastic hinge component. The staff adjusts the position of the nut head 807 on the external threaded rod 804 by turning the nut head 807. Taking the operation of screwing the nut head 807 downward as an example, the external threaded rod 804 can move up a certain distance. At this time, the spring 806 gradually expands, and then the bottom end of the swing arm unit 802 swings around the V-mouth plate 801 and approaches the vertical center reference plane of the circular frame 6, so that the sanding belt part of the sanding belt grinding assembly 9 is attached to the outer wall of the L-shaped angle steel.

[0061] At this time, the left and right symmetrical elastic force-enhancing swing arm assemblies 8 work together to form a wrap-around force mode, ensuring that the grinding force always acts vertically on the right-angle outer wall of the L-shaped angle steel, avoiding the workpiece offset caused by unilateral pressure. At the same time, the elastic force-enhancing 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 excessive grinding of the workpiece surface.

[0062] In addition to this embodiment, the elastic hinge component can also use 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 hingedly connected to the bending portion 803 and the end of the swing arm unit 802 away from the V-mouth plate 801. The electric telescopic rod is used to drive the swing arm unit 802 to swing, thereby adjusting the position of the belt grinding assembly 9 for easy use.

[0063] The belt grinding assembly 9 includes a C-mouth frame 901 fixed between two swing arm units 802, a driving pulley 902 and a driven pulley 903 rotatably installed at the same edge position of the top of the C-mouth frame 901, and a sanding belt body 905 is sleeved on the driving pulley 902 and the driven pulley 903.

[0064] A motor 906 is mounted on the top wall of the C-mouth frame 901 , and a power output end of the motor 906 is fixedly connected to the bottom end of the driving pulley 902 .

[0065] The motor 906 is started to output rotational power to drive the driving pulley 902 to rotate. The driving pulley 902 cooperates with the driven pulley 903 to support the sanding belt body 905 to move in a circular manner. At this time, the sanding belt body 905 performs a sanding operation.

[0066] A support plate 904 is installed at the edge of one side of the top of the C-mouth frame 901. The support plate 904 contacts the inner side of the sanding belt body 905 and is used to support the inner side of the sanding belt body 905, ensuring that the sanding belt body 905 can better contact the outer wall of the L-shaped angle steel, thereby improving the grinding effect and ensuring that the grinding area accurately covers the burr area.

[0067] A tensioning wheel 907 is movably mounted on the inner side of the abrasive belt body 905 on the C-mouth frame 901 . The tensioning wheel 907 contacts the inner side of the abrasive belt body 905 . A connecting rod tensioner 908 is mounted on the C-mouth frame 901 to drive the tensioning wheel 907 to swing.

[0068] In this design, the sanding belt body 905 is sleeved on the outside of the driving pulley 902, the driven pulley 903, the support plate 904 and the tensioning pulley 907; the driving pulley 902, the driven pulley 903, the support plate 904 and the tensioning pulley 907 cooperate with each other to support the sanding belt body 905 for circular rotation, and the connecting rod tensioner 908 is started to drive the tensioning pulley 907 to swing. At this time, the swing of the tensioning pulley 907 is used to adjust the tensioning force on the sanding belt body 905, ensuring that the sanding belt body 905 can rotate stably in a circular manner.

[0069] When the sanding belt body 905 contacts the outer wall of the L-shaped angle steel, the motor 906 drives the active pulley 902 to rotate. At this time, the sanding belt body 905 is rotated through the cooperation of the driven pulley 903 and the tensioning wheel 907. The continuous movement of the sanding belt body 905 forms a uniform grinding effect. Compared with fixed grinding tools, the sanding belt grinding assembly 9 has better surface grinding ability.

[0070] The connecting rod tensioner 908 includes a fan-shaped hollow groove 9081 opened on the C-mouth frame 901, and the tensioning wheel 907 is arranged at the position of the fan-shaped hollow groove 9081. A bent arm 9082 is rotatably installed on one side of the fan-shaped hollow groove 9081 on the top wall of the C-mouth frame 901. One end of the bent arm 9082 is rotatably connected to the tensioning wheel 907, and the other end of the bent arm 9082 is connected to a tensioning automatic telescopic rod 9083. The installation end of the tensioning automatic telescopic rod 9083 is hingedly installed on the C-mouth frame 901.

[0071] With this design, the automatic tensioning telescopic rod 9083 is activated to extend or retract its telescopic end, and the telescopic end of the automatic tensioning telescopic rod 9083 can drive the curved arm 9082 to swing. The swing of the curved arm 9082 drives the tensioning wheel 907 to move in the fan-shaped hollow groove 9081, thereby adjusting the position of the tensioning wheel 907, and then used to adjust the tensioning force of the tensioning wheel 907 on the sanding belt body 905, ensuring that the sanding belt body 905 has sufficient tension and improving the sanding effect.

[0072] In this embodiment, the tensioning automatic telescopic rod 9083 adopts one of a hydraulic cylinder, a telescopic cylinder, and an electric telescopic rod.

[0073] A PLC control panel 5 is installed on the outer wall of the punching machine 1, and the control output end of the PLC control panel 5 is electrically connected to the control input end of the punching machine 1, the lifting and lowering roller assembly 3, the lower active roller assembly 4 and the belt grinding assembly 9 respectively.

[0074] In this embodiment, the PLC control panel 5 is a prior art, and its overall structure includes a PLC controller. The output and input ends of the PLC controller are bidirectionally electrically connected to a control screen, which is used to display control parameters and adjust the control parameters.

[0075] The control output end of the PLC control panel 5 is electrically connected to the control end of the punching machine 1 , and the PLC control panel 5 outputs a control signal for controlling the punching machine 1 to perform a punching operation.

[0076] In this embodiment, the punching machine 1 is the existing technology, and its specific structure includes a punching machine body, a hydraulic cylinder is installed in the punching machine body, an upper mold is installed on the telescopic end of the hydraulic cylinder, and a lower mold is installed in the punching machine body directly below the upper mold. When the hydraulic cylinder is started, the upper mold is driven to move downward and cooperate with the lower mold to stamp the workpiece.

[0077] The control output end of the PLC control panel 5 is electrically connected to the control input end of the lifting automatic telescopic rod 303 of the lifting roller assembly 3. The PLC control panel 5 outputs a control signal to control the lifting automatic telescopic rod 303 to work in a set lifting distance and direction. The lifting automatic telescopic rod 303 starts to drive the roller frame 301 and the upper grooved pressure roller 302 to move up and down, which is used to adjust the height position of the upper grooved pressure roller 302.

[0078] The control output end of the PLC control panel 5 is electrically connected to the control input end of the driving member 402 of the lower active roller assembly 4. The PLC control panel 5 outputs a control signal for controlling the driving member 402 to work at the set direction, speed, angle and start and stop time. The driving member 402 starts to drive the lower grooved pressure roller 401 to rotate, and is used to transport the L-shaped angle steel with the cooperation of the upper grooved pressure roller 302.

[0079] The control output end of the PLC control panel 5 is electrically connected to the control input end of the motor 906 and the connecting rod tensioner 908 of the belt grinding assembly 9. The PLC control panel 5 outputs a control signal for controlling the motor 906 to operate at a set direction, speed, angle and start-stop time. The motor 906 drives the active pulley 902 to rotate, and is further used to drive the belt body 905 to rotate in a circular manner, so that the belt body 905 performs a grinding operation.

[0080] The PLC control panel 5 outputs a control signal for controlling the connecting rod tensioner 908 to operate in a set telescopic distance and direction. The connecting rod tensioner 908 is started to drive the tensioning wheel 907 to swing to adjust the tension of the sanding belt body 905.

[0081] The present invention also provides a method for processing and punching angle steel for a power transmission tower, based on the above-mentioned processing and punching device for the power transmission tower angle steel, comprising the following steps:

[0082] S101: placing the pre-prepared L-shaped angle steel at the feed port of the punching machine 1, and then starting 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 to perform punching and forming.

[0083] In the step S101, upper and lower molds can be selected according to the shape to be punched. The punching machine 1 drives the upper mold to move downward and cooperates with the lower mold to apply high pressure to the L-shaped angle steel for punching and forming.

[0084] S102: After the stamping is completed, the L-shaped angle steel is transported by the cooperation of the lifting roller assembly 3 and the lower active roller assembly 4. During the stamping process 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.

[0085] In the step S102, the working principle of the lifting and lowering pressure roller assembly 3 is as follows: 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.

[0086] In the step S102, the working principle of the lower active roller assembly 4 is: the driving member 402 starts to output rotational power to drive the lower grooved pressure roller 401 to rotate, and the lower grooved pressure roller 401 cooperates with the upper grooved pressure roller 302 to transport the L-shaped angle steel, so that the L-shaped angle steel moves to the roller 7 at the circular frame 6.

[0087] S103: After the L-shaped angle steel is sent out of the punching machine 1 and the steel walking frame 2, the left and right symmetrical elastic force-adding swing arm assembly 8 drives the sanding belt grinding assembly 9 to press on the right-angle outer wall surface of the L-shaped angle steel and perform burr removal or grinding and polishing operations.

[0088] In the step S103, the working principle of the elastic force-enhancing swing arm assembly 8 is as follows: the spring 806 outputs elastic force to act on the swing arm unit 802. At this time, the bottom end of the swing arm unit 802 swings around the V-mouth plate 801 and approaches the vertical center reference plane of the circular frame 6, so that the sanding belt body 905 of the sanding belt grinding assembly 9 is attached to the outer wall surface of the L-shaped angle steel.

[0089] In the step S103, the working principle of the sanding belt grinding assembly 9 is as follows: when the sanding belt body 905 contacts the outer wall surface of the L-shaped angle steel, the motor 906 starts to drive the active pulley 902 to rotate. At this time, the sanding belt body 905 is rotated through the cooperation of the driven pulley 903 and the tensioning pulley 907. The continuous movement of the sanding belt body 905 forms a uniform grinding effect, which is used to perform a grinding operation on the outer wall surface of the L-shaped angle steel.

[0090] In the step S103, after the sanding 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 sanding belt body 905, and is used to support the inner side surface of the sanding belt body 905, ensuring that the sanding belt body 905 can better contact the outer wall surface of the L-shaped angle steel, improve the grinding effect, and ensure that the grinding area accurately covers the burr area.

[0091] S104: After polishing, the staff will conduct a quality inspection on each L-shaped angle steel. The L-shaped angle steels that pass the inspection will be sent to the packaging area.

[0092] In this embodiment, after production is completed, the staff cleans and maintains the punching machine 1 and related assemblies to keep the devices in good condition.

[0093] Example 2: Figure 9 and Figure 10 As shown, based on the above-mentioned embodiment 1, in this embodiment 2, the two side walls of the C-mouth frame 901 are rotatably connected to the corresponding swing arm monomer 802 through support shafts (not shown in the figure), and the C-mouth frame 901 can swing along the support shaft relative to the swing arm monomer 802.

[0094] In this embodiment, one end of the support shaft is fixedly mounted on the C-mouth frame 901 , and the other end of the support shaft is rotatably connected to the corresponding swing arm unit 802 via a bearing.

[0095] A positioning plate 11 is fixedly installed on the swing arm unit 802 at a side position close to the C-mouth frame 901. An arc-shaped positioning groove 1101 is provided on the positioning plate 11. A fastening component for positioning the inclination angle of the C-mouth frame 901 is provided between the arc-shaped positioning groove 1101 and the C-mouth frame 901.

[0096] 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-mouth frame 901. The end of the positioning bolt 1102 away from the C-mouth frame 901 passes through the arc-shaped positioning groove 1101 and is threadedly connected to a positioning nut 1103. The positioning nut 1103 is in contact with the positioning vertical plate 11.

[0097] With this design, through the cooperation of the positioning bolt 1102 and the positioning nut 1103, the swing of the C-mouth frame 901 needs to be manually adjusted. When the inclination angle of the belt grinding assembly 9 needs to be adjusted, the staff can disassemble the positioning nut 1103, and then the staff rotates the C-mouth frame 901 to make the C-mouth frame 901 swing around the support shaft as the axis to adjust the inclination angle of the 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 threadedly connects the positioning nut 1103 to the positioning bolt 1102 and pre-tightens the positioning nut 1103. At this time, the positioning nut 1103 is in contact with the positioning vertical plate 11 to realize the positioning operation of the C-mouth frame 901, which is convenient for use.

[0098] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A punching device for processing angle steel of a transmission tower, characterized by: The invention comprises a punching machine (1), wherein a steel frame (2) is provided on one side of the punching machine (1), and a lifting roller assembly (3) and a lower active roller assembly (4) arranged in parallel are installed on the steel frame (2), and a material feeding channel is provided between the lifting roller assembly (3) and the lower active roller assembly (4); a circular frame (6) is fixedly installed on the side of the steel frame (2) away from the punching machine (1), and a plurality of rollers (7) are rotatably installed on the top of the circular frame (6), and elastic force-added swing arm assemblies (8) are installed at the front and rear edge positions of the top of the circular frame (6), and a sanding belt grinding assembly (9) is installed on the side of the elastic force-added swing arm assembly (8) close to the vertical center reference plane of the circular frame (6). The punching machine (1) is used for punching L-shaped angle steel. The lifting and lowering roller assembly (3) and the lower active roller assembly (4) cooperate to transport the L-shaped angle steel, so that the L-shaped angle steel is transported to a plurality of rollers (7). The abrasive belt grinding assembly (9) is started to perform a deburring and grinding operation on the outer wall surface of the L-shaped angle steel; the elastic force-added swing arm assembly (8) includes a plurality of V-shaped plates (801) fixedly mounted at the same side edge position of the top of the circular frame (6), and a swing arm monomer (802) is hingedly mounted on the top of one of the V-shaped plates (801); a bending portion (803) is integrally formed on the other end of the V-shaped plate (801), and an elastic hinge component is provided between the bending portion (803) and the end of the swing arm monomer (802) away from the V-shaped plate (801); the abrasive belt grinding assembly The elastic hinge assembly (9) is mounted on the swing arm monomer (802) on the same side; the elastic hinge assembly includes an external threaded rod (804) slidably mounted on the bending portion (803); a right-angle joint rod (805) is fixed to one end of the external threaded rod (804) close to the swing arm monomer (802); the right-angle joint rod (805) and one end of the swing arm monomer (802) are hinged to each other; a nut head (807) is threadedly mounted on the external threaded rod (804) below the bending portion (803); a spring (806) is sleeved on the external threaded rod (804) above the bending portion (803); the two ends of the spring (806) are respectively connected to the right-angle joint rod (805) and the bending portion (803); the sanding belt grinding assembly (9) includes a fixed mounting A C-shaped frame (901) is mounted between two swing arm monomers (802); a driving pulley (902) and a driven pulley (903) are rotatably mounted at the same edge position of 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); the sanding belt grinding assembly (9) is rotatably connected to the elastic force-added swing arm assembly (8) via a support shaft; a positioning vertical plate (11) is fixedly mounted on the elastic force-added swing arm assembly (8); an arc-shaped positioning groove (1101) is provided on the positioning vertical plate (11); a fastening component for positioning the inclination angle of the sanding belt grinding assembly (9) is provided between the arc-shaped positioning groove (1101) and the sanding belt grinding assembly (9).

2. The punching device for processing angle steel of a power transmission tower according to claim 1, characterized in that: A support plate (904) for supporting the inner side of the sanding belt body (905) is installed at an edge position on one side of the top of the C-mouth frame (901); a motor (906) is installed on the top wall of the C-mouth frame (901), and the power output end of the motor (906) is fixedly connected to the bottom end of the driving pulley (902).

3. The punching device for processing angle steel of a power transmission tower according to claim 2, characterized in that: A tension wheel (907) is movably mounted on the inner side of the sanding belt body (905) and located on the C-mouth frame (901). A connecting rod tensioner (908) is mounted on the C-mouth frame (901) for driving the tension wheel (907) to swing.

4. The punching device for processing angle steel of a power transmission tower according to claim 1, characterized in that: The lifting and lowering pressure roller assembly (3) comprises a roller frame (301) slidably mounted inside the steel walking frame (2), an upper grooved pressure roller (302) rotatably mounted in the middle of the roller frame (301), and a lifting automatic telescopic rod (303) fixedly mounted on the top of the steel walking frame (2), wherein 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).

5. The punching device for processing angle steel of a power transmission tower according to claim 4, characterized in that: The lower active roller assembly (4) comprises a lower grooved pressure roller (401), which is rotatably mounted inside the steel frame (2) below the upper grooved pressure roller (302). A driving member (402) is fixedly mounted on the steel frame (2), and a power output end of the driving member (402) is transmission-connected to the lower grooved pressure roller (401).

6. The punching device for processing angle steel of a power transmission tower according to claim 1, characterized in that: A steel plate (201) is fixedly mounted on the outer wall of the steel frame (2) on a side away from the punching machine (1). Round-headed steel columns (202) extending upward are detachably mounted at the front and rear positions of the top of the steel plate (201). A guide gap (203) for L-shaped angle steel to pass through is provided between the two round-headed steel columns (202).

7. A method for processing and punching angle steel for a power transmission tower, based on the apparatus for processing and punching angle steel for a power transmission tower according to any one of claims 1 to 4, characterized in that: The following steps are involved: S101: placing the pre-prepared L-shaped angle steel at the feed port of the punching machine (1), and then starting 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 to punch and form the L-shaped angle steel; S102: After the stamping is completed, the L-shaped angle steel is transported by the cooperation of the lifting roller assembly (3) and the lower active roller assembly (4). During the stamping process 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; S103: After the L-shaped angle steel is sent out of the punching machine (1) and the steel walking frame (2), the left and right symmetrical elastic force-adding swing arm assembly (8) drives the sanding belt grinding assembly (9) to be pressed on the right-angle outer wall surface of the L-shaped angle steel and perform burr removal or grinding and polishing operations; S104: After polishing, the staff will conduct a quality inspection on each L-shaped angle steel. The L-shaped angle steels that pass the inspection will be sent to the packaging area.

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