Full-automatic punch forming equipment and method for electric cabinet copper bar

Abstract

The full-automatic punch forming equipment comprises a punching structure, a copper bar limiting mechanism, an automatic copper bar conveying mechanism and an automatic pushing mechanism, the punching structure comprises a fixing column, a workbench, a hydraulic cylinder and a lifting block, and the copper bar limiting mechanism comprises an arched frame plate, a track groove, a movable plate, a limiting shaft and a V-shaped groove. The automatic copper bar conveying mechanism comprises a motor, a swing plate, a rotating shaft, a friction roller and a conveying belt mechanism, the automatic pushing mechanism comprises a main shaft, an incomplete gear, a toothed plate, a pushing plate, a sliding rod and a force storage spring, and all the mechanisms achieve automatic operation of copper bar clamping, feeding, stamping and waste discharging through linkage. The device can be matched with copper bars of different specifications for stable limiting, deviation and stamping errors are avoided, the friction conveying structure improves the feeding efficiency and protects the surfaces of the copper bars, the force storage ejection mechanism rapidly removes waste to prevent a die cavity from being blocked, and the stamping precision and running stability of the whole machine are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical equipment processing, and particularly relates to a fully automatic stamping and forming device and method for copper bars of an electric control box. Background Art

[0002] In the field of existing electrical control equipment manufacturing, copper bars are widely used as current conductors inside electrical control boxes, distribution cabinets and other equipment. To achieve standard and neat electrical connection and wiring structure, copper bars need to be stamped before assembly to form mounting holes, positioning grooves or bending structures, etc. However, the current stamping and forming of copper bars mainly rely on semi-automatic or manual methods, and there are the following deficiencies: First, the limiting and clamping method of copper bars is fixed and single, with poor adaptability. Most traditional stamping equipment uses fixtures with fixed dimensions and cannot quickly adapt to copper bars of different widths or thicknesses. It often requires replacing fixtures or even manual auxiliary adjustment, resulting in low positioning efficiency and poor accuracy. The copper bars are prone to deviation or misalignment during feeding or stamping, affecting the final forming accuracy.

[0003] Second, the stability of the automatic feeding structure is insufficient, and it is easy to damage the surface of the copper bar. Most existing feeding devices use simple friction drive methods, lacking effective limiting or buffer protection for the upper surface of the copper bar, which is easy to cause scratches or surface wear of the copper bar, and is not conducive to the quality control of finished products; and the device has poor adaptability to short copper bars, restricting the processing range.

[0004] Third, the stamping waste is not thoroughly processed, and there is a risk of blockage. During continuous stamping, the dropped waste often stays in the lower die structure. If it is not discharged in time, it is easy to cause the die cavity to be blocked, affecting the smooth progress of the subsequent stamping process. In severe cases, it may even cause equipment failure. Although some structures are provided with a material pushing device, most of them are simple structures, with a small discharging range and insufficient force, and cannot completely solve the problem of waste blockage.

[0005] In addition, the utilization of the principle of mechanical energy storage and release is not fully considered during the stamping process. The traditional discharging method mainly relies on motor or push rod control, with untimely response and low energy utilization efficiency. It cannot cooperate flexibly according to the stamping rhythm, and is not conducive to realizing high-efficiency and stable fully automatic continuous stamping.

[0006] In summary, the existing copper bar stamping equipment still has significant deficiencies in terms of adaptability to multiple specifications, automatic feeding protection, stamping waste discharge and mechanism linkage efficiency. Summary of the Invention

[0007] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a full-automatic stamping and forming device and method for the copper busbar of an electric control box, which can realize a full-automatic stamping and forming device that combines automatic limiting of copper busbars of multiple specifications, automatic feeding, precise stamping, and effective ejection of waste materials, so as to improve production efficiency and finished product accuracy and meet the requirements of high-quality installation of the internal structure of the electric control box.

[0008] To achieve the above object, the present invention provides the following technical solutions: A full-automatic stamping and forming device for the copper busbar of an electric control box, including a stamping structure. The stamping structure includes a workbench fixed on the ground surface. A fixed column is vertically arranged at the rear side of the top of the workbench, and a lifting block is vertically and slidably installed on the front side of the fixed column; A copper busbar limiting mechanism is installed on the upper surface of the workbench. The front end of the lifting block is placed directly above the copper busbar limiting mechanism. The copper busbar limiting mechanism is used to limit both sides of the copper busbar, and the copper busbar limiting mechanism is applicable to the limiting work of copper busbars of different widths and thicknesses; Extension ear plates are symmetrically arranged on both sides of the fixed column. A copper busbar automatic conveying mechanism is installed on the surface of the extension ear plates. The copper busbar automatic conveying mechanism is used to convey the copper busbar placed inside the copper busbar limiting mechanism; An automatic material pushing mechanism is also installed below the inner side of the fixed column. The automatic material pushing mechanism is linked with the lifting block. The automatic material pushing mechanism is used to eject the stamped materials to prevent blockage.

[0009] Further, a hydraulic cylinder is fixed at the top of the fixed column. A chute is vertically opened on the surface of the fixed column. The rear end of the lifting block slides inside the chute. The output end of the hydraulic cylinder is fixed downward on the lifting block. A stamping upper die is installed on the front side of the lower surface of the lifting block.

[0010] Further, the copper busbar limiting mechanism includes an arched frame plate fixed on the upper surface of the workbench. Track grooves are symmetrically opened on both sides of the upper surface of the arched frame plate. An arched lower die seat is fixed at the center of the top of the arched frame plate. A blanking die hole adapted to the stamping upper die is opened on the upper surface of the arched lower die seat.

[0011] Further, moving plates are symmetrically installed at the front and rear of the upper surface of the arched frame plate. Sliders are symmetrically arranged at the bottom of the moving plates. The sliders slide inside the track grooves and penetrate the track grooves. A notch for discharging materials is opened at the middle position of the moving plate placed at the front side.

[0012] Furthermore, a limit shaft is evenly rotatably installed on the upper surface of the movable plate, and a circle of V-shaped grooves is provided on the cylindrical surface of the limit shaft. A screw is rotatably installed on the upper interior of the arched frame plate, and the screw is placed between the two track grooves. Two adjustment blocks are screwed on the surface of the screw, and the first connecting rod is symmetrically hinged on both sides of the adjustment block, and the end of the first connecting rod facing away from the adjustment block is hinged to the bottom of the slider.

[0013] Furthermore, the copper bar automatic conveying mechanism includes a swinging plate rotating on the front side of the adjusting block and a motor fixed on the rear side of the extending ear plate, the output shaft of the motor passes through the surface of the swinging plate, and a rotating shaft is rotatably installed on the end of the front surface of the swinging plate facing away from the motor, and the rotating shaft is placed above the copper bar limiting mechanism, and a friction roller is installed on the surface of the rotating shaft, and the friction roller is in contact with the upper surface of the copper bar. A conveying belt mechanism is arranged between the output shaft of the motor and the rotating shaft, and a locking bolt is also rotatably passed through the surface of the swinging plate, and the ends of the swinging plates on both sides are inclined toward the center of both.

[0014] Furthermore, the automatic pushing mechanism includes a push plate sliding on the rear side of the arched lower mold base and a main shaft rotating horizontally on the rear side of the fixed column. Slide rods are symmetrically arranged on the rear side of the push plate. Both of the slide rods pass through the movable plate on the rear side. Connecting plates are arranged at the rear ends of the two slide rods. A force storage spring is sleeved on the surface of the slide rod. The force storage spring is placed between the push plate and the movable plate on the rear side. A tooth plate is fixed on the rear side of the connecting plate. The tooth plate slides through the bottom of the inner part of the slide groove.

[0015] Furthermore, an incomplete gear is installed on the surface of the main shaft, and the incomplete gear is placed above the gear plate and meshed with the gear plate. One end of the main shaft is a crankshaft, and the surface of the crankshaft is hinged to a second connecting rod, and the top of the second connecting rod is hinged to the back of the lifting block.

[0016] Further, the specific steps include: Step 1: First, adjust the copper bar limiting mechanism according to the width of the copper bar to be stamped, place the copper bar between the limiting shafts on both sides, and make the copper bar limited by the V-shaped groove on both sides. Rotate the lead screw to control the distance between the two moving plates to maintain its limit on the copper bar to be stamped. At the same time, the limiting shaft can be rotated to facilitate the movement of the auxiliary copper bar. Step 2: Install the appropriate stamping upper die and arched lower die base according to the requirements of the stamping, and control the hydraulic cylinder and the copper bar automatic conveying mechanism through the computer according to the stamping position. Move the copper bar through the copper bar automatic conveying mechanism, loosen the locking bolt, and the end of the swing plate will swing downward due to its own weight, so that the friction roller will contact the upper surface of the copper bar. Start the motor to drive the rotating shaft to rotate through the conveying belt mechanism, and then the friction between the friction roller and the copper bar will drive the copper bar to move, thereby realizing feeding; Step 3: When the lifting block moves up and down, it punches the copper bar passing below. At the same time, the cooperation between the second connecting rod and the crankshaft on the back can drive the main shaft to rotate and then drive the incomplete gear to rotate. When the gear on the surface of the incomplete gear engages with the tooth plate, it can drive the tooth plate to move backward, and then the push plate moves backward to squeeze and store force on the force storage spring. When the teeth of the incomplete gear rotate beyond the meshing position of the tooth plate, the incomplete gear will move forward quickly due to the stored force of the force storage spring, and then the punched material will be pushed out of the arched lower die seat through the push plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The copper busbar limiting mechanism is equipped with an adjustable movable plate and a limiting shaft. The outer surface of the limiting shaft is provided with a V-groove structure, which can adapt to copper buses of different widths and thicknesses for multi-angle clamping and limiting. It effectively solves the problem that the traditional fixture has a single structure and cannot quickly adapt to copper buses of multiple specifications. At the same time, it improves the positioning accuracy during the stamping process, prevents the copper busbar from deflecting or tilting during the feeding and stamping process, and ensures the stability of the stamping quality.

[0018] The automatic copper bar conveying mechanism works through the linkage of the motor, conveyor belt mechanism, swing plate and friction roller, and uses friction drive to achieve continuous conveying of the copper bar. The swing plate in the structure can automatically adjust its height due to its own weight, and cooperates with the locking bolt to achieve limit protection to avoid scratches on the copper bar surface or loss of control of the roller position. It effectively solves the problems of traditional conveying devices such as poor adaptability to short copper bars and fragile copper bars, and improves feeding stability and finished product protection capabilities.

[0019] The automatic pushing mechanism adopts the meshing of incomplete gears and toothed plates to control the sliding push plate structure, and drives the crankshaft and the second connecting rod to indirectly drive the main shaft to rotate through the reciprocating motion of the lifting block. The main shaft rotates one circle to realize the accumulation of force and rapid ejection action, effectively realizing the linkage control with the stamping rhythm, solving the problems of slow discharge and limited discharge distance of traditional waste discharge methods, significantly improving the cleaning efficiency and operation stability of the stamping die cavity, and avoiding shutdown failures caused by die cavity blockage.

[0020] Through structural transmission and linkage coordination between the various mechanisms of the overall structure, the full-process automation of copper busbars, including automatic clamping, continuous feeding, efficient stamping and timely waste discharge, can be achieved. This effectively solves key problems existing in existing copper busbar stamping equipment, such as poor adaptability, unstable feeding, low precision and waste blockage, and improves the comprehensive processing efficiency and automation level of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the stamping workbench of the present invention; Figure 3It is a schematic diagram of the three-dimensional structure of the copper busbar limiting mechanism of the present invention; Figure 4 Schematic diagram of the internal structure of the copper busbar limiting mechanism of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the automatic conveying mechanism of the present invention; Figure 6 This is a schematic diagram of the connection position structure of the movable plate and the sliding rod of the present invention; Figure 7 This is a schematic diagram of the automatic material pushing structure of the present invention; Figure 8 For the present invention Figure 1 Schematic diagram of the rear view structure.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Stamping structure; 11. Workbench; 12. Fixed column; 13. Slide; 14. Hydraulic cylinder; 15. Lifting block; 16. Stamping upper die; 17. Extended ear plate; 2. Copper busbar limiting mechanism; 21. Arched frame plate; 22. Track groove; 23. Arched lower die seat; 231. Blanking die hole; 24. Moving plate; 241. Slider; 25. Lead screw; 26. Limiting shaft; 261. V-shaped groove; 27. Adjustment block; 28. First connecting rod; 3. Automatic copper busbar conveying mechanism; 31. Swing plate; 32. Motor; 33. Rotating shaft; 34. Friction roller; 35. Locking bolt; 36. Conveyor belt mechanism; 4. Automatic pushing mechanism; 41. Push plate; 42. Slide rod; 43. Force storage spring; 44. Connecting plate; 45. Gear plate; 46. Crankshaft; 47. Main shaft; 48. Incomplete gear; 49. Second connecting rod. DETAILED DESCRIPTION

[0023] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0024] Example 1: See also Figure 1-8, a fully automatic stamping and forming equipment for copper busbars of electric control boxes, comprising a stamping structure 1, the stamping structure 1 comprising a workbench 11 fixed to the ground; a fixing column 12 is vertically arranged on the rear side of the top of the workbench 11; a lifting block 15 is vertically slidably installed on the front side of the fixing column 12; a copper busbar limiting mechanism 2 is installed on the upper surface of the workbench 11; the front end of the lifting block 15 is placed just above the copper busbar limiting mechanism 2; the copper busbar limiting mechanism 2 is used to limit the two sides of the copper busbar, and the copper busbar limiting mechanism 2 is suitable for limiting the copper busbars of different widths and thicknesses, and the copper busbars are multi-sized adapted and limited by the V-grooves 261 provided on the limiting shaft 26 to prevent dislocation and offset; extended ear plates 17 are symmetrically arranged on both sides of the fixing column 12; the surface of the extended ear plate 17 is installed with The copper bar automatic conveying mechanism 3 includes a motor 32, a swing plate 31, a rotating shaft 33, a friction roller 34, a conveying belt mechanism 36 and a locking bolt 35. The friction roller 34 is linked to the motor 32 through the conveying belt mechanism 36, and is used to automatically feed and convey the copper bar placed on the inner side of the copper bar limiting mechanism 2; an automatic pushing mechanism 4 is also installed on the lower inner side of the fixed column 12. The automatic pushing mechanism 4 includes a pushing plate 41, a sliding rod 42, a connecting plate 44, a force storage spring 43, a tooth plate 45, a main shaft 47, a crankshaft 46 and an incomplete gear 48, and is linked to the lifting block 15 through a second connecting rod 49. The automatic pushing mechanism 4 is used to eject the material under stamping to prevent the mold cavity from being blocked due to waste accumulation.

[0025] See also Figure 1-2 A hydraulic cylinder 14 is fixed on the top of the fixed column 12; a slide groove 13 is vertically opened on the surface of the fixed column 12; the rear end of the lifting block 15 slides inside the slide groove 13; the output end of the hydraulic cylinder 14 is fixed downward on the lifting block 15; the hydraulic cylinder 14 realizes the up and down reciprocating motion of the lifting block 15 through program control; a stamping upper die 16 is installed on the front side of the lower surface of the lifting block 15; the stamping upper die 16 is matched with the arched lower die base 23 structure, and is used to perform high-precision stamping operations on the copper busbar positioned by the copper busbar limiting mechanism 2.

[0026] Two hydraulic cylinders 14 are symmetrically arranged to ensure that the lifting block 15 is evenly stressed to prevent eccentricity. The two hydraulic cylinders 14 are closed-loop controlled by the synchronous valve, servo valve or displacement sensor of the hydraulic system to achieve high consistency in the movement speed and displacement of the two cylinders. See also Figure 3-6 The copper busbar limiting mechanism 2 includes an arched frame plate 21 fixed to the upper surface of the workbench 11; track grooves 22 are symmetrically provided on both sides of the upper surface of the arched frame plate 21; an arched lower die base 23 is fixed to the top center of the arched frame plate 21; a blanking die hole 231 is provided on the upper surface of the arched lower die base 23, which is adapted to the stamping upper die 16; the blanking die hole 231 is used to receive the waste material punched out during the stamping process, and the upper surface of the arched lower die base 23 also bears the lower support for the copper busbar to prevent the copper busbar from being deformed or scratched when subjected to force.

[0027] Refer to Figure 3-6 , moving plates 24 are symmetrically installed on the front and rear upper surfaces of the arched plate 21; sliders 241 are symmetrically arranged at the bottom of the moving plates 24; the sliders 241 slide inside the track grooves 22 and penetrate through the track grooves 22, for guiding the moving plates 24 to move smoothly along the track; a notch is provided at the middle position of the front moving plate 24 for discharging, so that the waste can fall into the arched lower die base 23 in time during the stamping process; the displacement of the moving plate 24 is controlled by linkage with the adjusting block 27 through the first connecting rod 28.

[0028] Refer to Figure 3-6 , limiting shafts 26 are evenly and rotatably installed on the upper surface of the moving plate 24; a circle of V-shaped grooves 261 are provided on the cylindrical surface of the limiting shafts 26; the V-shaped groove 261 structure is adapted to copper bars of different thicknesses and can wrap and limit the sides of the copper bars; a lead screw 25 is rotatably installed above the inside of the arched plate 21; the lead screw 25 is arranged between the two track grooves 22, and two adjusting blocks 27 are screwed on the surface of the lead screw 25; two first connecting rods 28 are symmetrically hinged on both sides of the adjusting block 27; the end of the first connecting rod 28 away from the adjusting block 27 is hinged to the bottom of the slider 241; by rotating the lead screw 25, the symmetrical movement of the adjusting block 27 can be realized, and then the first connecting rod 28 is driven to make the slider 241 move along the track groove 22, so as to drive the moving plate 24 to adjust the clamping width of the copper bar and realize rapid adaptation to copper bars of different specifications.

[0029] Refer to Figure 4-8 , the automatic copper bar conveying mechanism 3 includes a swing plate 31 rotating in front of the adjusting block 27 and a motor 32 fixed to the rear side of the extension ear plate 17; the output shaft of the motor 32 penetrates through the surface of the swing plate 31 and is connected to the conveyor belt mechanism 36; a rotating shaft 33 is rotatably installed at the end of the front surface of the swing plate 31 away from the motor 32; the rotating shaft 33 is arranged above the copper bar limiting mechanism 2; a friction roller 34 is installed on the surface of the rotating shaft 33; the friction roller 34 is in contact with the upper surface of the copper bar and drives the copper bar to move forward through friction by rotation; the end of the swing plate 31 is inclined downward under the influence of gravity to make the friction roller 34 naturally fit with the copper bar; the output shaft of the motor 32 drives the rotating shaft 33 to rotate through the conveyor belt mechanism 36; a locking bolt 35 also rotatably penetrates through the surface of the swing plate 31, and inner threaded holes are respectively provided on the surface of the fixed column 12 in a fan shape with the rotation axis of the swing plate 31 as the center, and the end of the locking bolt 35 is adapted to the inner threaded holes, for restricting the excessive sinking of the swing plate 31 at the initial stage of feeding; the ends of the two swing plates 31 are inclined towards the center of the two, forming a symmetrical clamping structure to ensure the balanced application of the conveying force.

[0030] Refer to Figure 7-8The automatic pushing mechanism 4 includes a push plate 41 sliding on the rear side of the arched lower mold base 23 and a main shaft 47 rotating horizontally on the rear side of the fixed column 12; a slide rod 42 is symmetrically arranged on the rear side of the push plate 41; the two slide rods 42 both pass through the rear movable plate 24, which is used to guide the push plate 41 to reciprocate in the horizontal direction; a connecting plate 44 is provided at the rear end of the two slide rods 42; a force storage spring 43 is sleeved on the surface of the slide rod 42; the force storage spring 43 is placed between the push plate 41 and the rear movable plate 24, which is used to accumulate elastic force during the backward movement of the push plate 41; a tooth plate 45 is fixed on the rear side of the connecting plate 44; the tooth plate 45 slides through the bottom of the slide groove 13 to form a meshing mechanism with the incomplete gear 48 on the main shaft 47; this structure can realize the storage and release of the force storage spring 43 within a specific beat, thereby pushing the push plate 41 forward and pushing the waste away from the lower mold area.

[0031] See Figure 7-8 An incomplete gear 48 is installed on the surface of the main shaft 47; the incomplete gear 48 is placed above the tooth plate 45 and meshes with the tooth plate 45; one end of the main shaft 47 is a crankshaft 46; the surface of the crankshaft 46 is hinged with a second connecting rod 49; the top of the second connecting rod 49 is hinged to the back of the lifting block 15; every time the lifting block 15 completes an up and down stamping cycle, the second connecting rod 49 and the crankshaft 46 cooperate to drive the main shaft 47 to complete a circle of rotation; when the incomplete gear 48 rotates to the meshing area between the tooth portion and the tooth plate 45, the tooth plate 45 is pulled backward to compress the storage spring 43; when the gear continues to rotate and disengages from the meshing range of the tooth plate 45, the storage spring 43 releases the elastic force to push the push plate 41 forward, effectively ejecting the stamping waste inside the blanking die hole 231 to avoid blockage and accumulation of materials.

[0032] See Figure 1-8 A method for using a fully automatic stamping and forming device for copper busbars of an electric control box, comprising the following steps: Step 1: First, adjust the copper bar limiting mechanism 2 according to the width of the copper bar to be stamped; place the copper bar between the limiting shafts 26 on both sides, and make the copper bar limited by the V-shaped grooves 261 on both sides; rotate the screw 25 to control the distance between the two movable plates 24 to maintain its position limit on the copper bar to be stamped; at the same time, the limiting shaft 26 can be rotated to facilitate the movement of the auxiliary copper bar; Step 2: Install the appropriate stamping upper die 16 and arched lower die base 23 according to the stamping requirements, and control the hydraulic cylinder 14 and the copper bar automatic conveying mechanism 3 through the computer according to the stamping position; move the copper bar through the copper bar automatic conveying mechanism 3; loosen the locking bolt 35; due to the deadweight of the swing plate 31, the end will swing downward, and then the friction roller 34 will contact the upper surface of the copper bar; start the motor 32 to drive the rotating shaft 33 to rotate through the conveying belt mechanism 36, and then the friction between the friction roller 34 and the copper bar drives the copper bar to move, thereby realizing feeding; Step 3: When the lifting block 15 moves up and down reciprocally, it punches the copper busbars passing below; at the same time, the cooperation between the second connecting rod 49 on the back and the crankshaft 46 drives the main shaft 47 to rotate, and then drives the incomplete gear 48 to rotate; when the gear on the surface of the incomplete gear 48 meshes with the toothed plate 45, it can pull the toothed plate 45 backward, and then the push plate 41 moves backward to compress and store energy in the energy storage spring 43; when the teeth of the incomplete gear 48 rotate beyond the meshing position with the toothed plate 45, the incomplete gear 48 will quickly move forward due to the stored energy of the energy storage spring 43, and then push out the punched materials through the push plate 41 from the arched lower die base 23.

[0033] Embodiment 2: Refer to Figure 3-6 , in this embodiment, the copper busbar limiting mechanism 2 includes two moving plates 24 fixed on the arched frame plate 21; a slider 241 is connected to the bottom of each moving plate 24, and the slider 241 is slidably installed in the track groove 22; a limiting shaft 26 is installed on the moving plate 24, and a V-shaped groove 261 is formed on the outer circumference of the limiting shaft 26, the groove opening angle is 90°, the groove depth is 4 mm, and it is processed with hard nylon material to prevent scratching the surface of the copper busbar; a rotating lead screw 25 is arranged between the track grooves 22, the lead screw 25 is screwed with two adjusting blocks 27, and the adjusting blocks 27 are hinged and linked with the bottom of the slider 241 through the first connecting rod 28 to realize synchronous adjustment of the distance between the two moving plates 24; this structure can quickly adapt to copper busbars with a width of 10 mm to 50 mm and a thickness of 0.5 mm to 5 mm, ensuring stable limiting and preventing deviation.

[0034] The existing equipment uses fixed limiting clamping plates for copper busbar positioning and does not have a width adjustment function; when changing the copper busbar specifications, it is necessary to disassemble and replace the fixture, which is time-consuming and laborious, and there are problems with clamping errors; in contrast, the structure of the present invention can adapt to a variety of copper busbar specifications through V-shaped limiting and spiral drive synchronization adjustment, significantly improving the operation efficiency and positioning accuracy, and having stronger industrial adaptability and stability.

[0035] Embodiment 3: Refer to Figure 4-8 , in this embodiment, the copper busbar automatic conveying mechanism 3 includes a motor 32 arranged inside the extension ear plate 17, the model of the motor 32 is JS-550 DC motor, the rated voltage is 24V, the output shaft is connected to the rotating shaft 33 through the conveying belt mechanism 36, the rotating shaft 33 is installed on the swing plate 31, and the swing plate 31 can swing freely around the axis of rotation installed at the front end of the adjusting block 27; two friction rollers 34 are installed on the rotating shaft 33, the outer ring of the roller is made of silica gel material, with a diameter of 30 mm and a width of 10 mm; when the motor 32 is started, it drives the rotating shaft 33 to rotate, and the friction rollers 34 form frictional contact with the upper surface of the copper busbar placed inside the copper busbar limiting mechanism 2 to realize continuous and stable conveying of the copper busbar; the locking bolt 35 is used to fix the position of the swing plate 31 at the initial stage of loading to prevent the roller from sinking too deep and causing damage.

[0036] In traditional copper bar feeding, a roller pair pressing feeding structure is mostly adopted. The structure is fixed, without floating adjustment ability, and has poor support for short copper bars, prone to slipping or jamming. The structure of the present invention utilizes a self-weight swing plate to cooperate with soft rollers to fit the surface of the copper bar, which can not only be self-adaptively tightened, but also effectively prevent the copper bar from being scratched. At the same time, it cooperates with a locking mechanism to realize working condition switching, improving the feeding stability and the copper bar surface protection ability.

[0037] Example 4: Refer to Figure 7-8 , in this embodiment, the automatic material pushing mechanism 4 includes a push plate 41 slidably installed inside the arched lower die base 23. Two sliding rods 42 are symmetrically connected to the rear end of the push plate 41. The tail ends of the sliding rods 42 are fixedly connected to a connecting plate 44. A wire compression spring (model: KJ-16-45, elastic force 45N) is sleeved on the surface of the sliding rods 42. A toothed plate 45 is installed at the tail end of the connecting plate 44. The toothed plate 45 is slidably installed in the rear chute 13 of the fixed column 12. A main shaft 47 is horizontally arranged at the tail of the fixed column 12. The end of the main shaft 47 is a crankshaft 46. A second connecting rod 49 is hinged on the crankshaft 46. The top end of the second connecting rod 49 is hinged on the back of the lifting block 15. An incomplete gear 48 is arranged on the main shaft 47, and its tooth section meshes with the toothed plate 45. By the up and down reciprocating movement of the lifting block 15 during the stamping process, the main shaft 47 is indirectly driven to rotate one circle, realizing the backward movement and energy storage of the toothed plate 45 and the rapid release of elastic force to push the push plate 41 forward, quickly ejecting the waste material falling into the blanking die hole 231 to prevent blockage.

[0038] The conventional material discharging structure relies on pneumatic push rods or manual operations, with slow response and short discharging distance, and it is extremely easy to have the phenomenon of waste material accumulation and blockage of the die cavity. In contrast, the present invention realizes a feeding action with consistent rhythm through the crankshaft linkage of the main shaft and the gear mechanism, and adopts an energy storage spring to instantaneously release, with fast and powerful discharging of the waste material and clean discharging of the waste material, significantly improving the equipment operation stability and the die cavity cleanliness.

[0039] The working principle of the present invention is as follows: First, place the copper bar to be processed inside the copper bar limiting mechanism 2, so that both sides of the copper bar are placed between the two moving plates 24 on both sides and inside the V-shaped groove 261. Rotating the lead screw 25 can simultaneously control the movement of the two adjusting blocks 27. Through the first connecting rod 28, the slider 241 can be pulled to move along the track of the track groove 22 towards the center position of the arched frame plate 21, and then the two moving plates 24 approach each other to clamp the copper bar through the limiting shaft 26, ensuring the stability of the copper bar during movement. At the same time, the cross-section of the V-shaped groove 261 is a V-shaped structure to adapt to the limiting work of copper bars with different thicknesses. This mechanism can limit copper bars with different widths and thicknesses to ensure the stability of the copper bar during movement, prevent misalignment during movement, and prevent the copper bar from shifting during stamping, ensuring the stamping accuracy; Select a suitable arched lower die base 23 and a stamping upper die 16 for stamping work. The material punched off will fall through the blanking die hole 231 to the inside of the arched lower die base 23. During the movement of the copper bar, the lower surface of the copper bar slightly contacts the upper surface of the arched lower die base 23 to ensure effective support for the stamped part of the copper bar during stamping, and the lower surface of the copper bar will not be damaged due to large-area friction. Due to its own weight, the end of the swing plate 31 will swing downward, and then the friction roller 34 will be placed on the upper surface of the copper bar. Starting the motor 32 can drive the rotating shaft 33 to rotate through the conveyor belt mechanism 36, and then drive the copper bar to move through the friction between the friction roller 34 and the copper bar to achieve automatic feeding. The function of the locking bolt 35 is to prevent the friction roller 34 from being too low during feeding. Copper bar automatic conveying mechanisms 3 are provided on both sides of the fixed column 12 to ensure the conveying work of the copper bar and adapt to the processing of short copper bars. During stamping, the lifting block 15 will reciprocate up and down. During the up and down movement, the main shaft 47 can be driven to rotate through the cooperation of the second connecting rod 49 and the crankshaft 46 on the back. The matching dimensions should ensure that the main shaft 47 rotates one circle during one up and down movement cycle. At this time, the incomplete gear 48 will also rotate. During the rotation, the tooth plate 45 can be driven to move backward through the meshing of the teeth on the surface of the incomplete gear 48 with the tooth plate 45, and then drive the push plate 41 to move backward to compress and store energy in the energy storage spring 43. When the teeth of the incomplete gear 48 rotate beyond the range of meshing with the tooth plate 45, the limit on the tooth plate 45 is lost. At this time, due to the energy stored in the energy storage spring 43, the push plate 41 can move forward quickly to eject the materials falling inside the arched lower die base 23 to prevent blockage. The cooperation should ensure that the energy storage spring 43 is in the energy storage state within the range where the stamping upper die 16 is about to move to the bottom and just after it is lifted after stamping. When the stamping upper die 16 moves upward beyond the arched lower die base 23, the incomplete gear 48 no longer cooperates with the tooth plate 45 to store energy, so as to effectively eject the punched materials. This mechanism that uses energy storage to eject can eject the punched materials farther and effectively prevent blockage.

[0040] The processing of copper bars with different widths will cause the position of the rear moving plate 24 to vary. Therefore, different springs can be selected, or the cooperation position between the tooth plate 45 and the incomplete gear 48 can be adjusted to make up for it, but it is necessary to ensure that the push plate 41 is behind the blanking die hole 231 after energy storage.

[0041] The above is only the preferred implementation mode of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention are implemented according to the conventional means in this field without special description and limitation.

Claims

1. A fully automatic stamping and forming device for the copper busbar of an electric control box, comprising a stamping structure (1), characterized in that: The punching structure (1) comprises a workbench (11) fixed on the ground surface, a fixing column (12) is vertically arranged on the rear side of the top of the workbench (11), and a lifting block (15) is vertically slidably installed on the front side of the fixing column (12); A copper bar limiting mechanism (2) is installed on the upper surface of the workbench (11), and the front end of the lifting block (15) is placed directly above the copper bar limiting mechanism (2). The copper bar limiting mechanism (2) is used to limit the two sides of the copper bar. The copper bar limiting mechanism (2) is suitable for limiting copper bars of different widths and thicknesses. Extension ear plates (17) are symmetrically provided on both sides of the fixed column (12), and a copper bar automatic conveying mechanism (3) is installed on the surface of the extension ear plates (17). The copper bar automatic conveying mechanism (3) is used to convey the copper bar placed inside the copper bar limiting mechanism (2); An automatic material pushing mechanism (4) is also installed below the inner side of the fixed column (12). The automatic material pushing mechanism (4) is linked with the lifting block (15). The automatic material pushing mechanism (4) is used to eject the material under the punching to prevent blockage.

2. The full-automatic stamping and forming equipment for the copper bar of the electric control box according to claim 1, characterized in that: A hydraulic cylinder (14) is fixed on the top of the fixed column (12), a slide groove (13) is vertically opened on the surface of the fixed column (12), the rear end of the lifting block (15) slides inside the slide groove (13), the output end of the hydraulic cylinder (14) is fixed downward on the lifting block (15), and a stamping upper die (16) is installed on the front side of the lower surface of the lifting block (15).

3. The full-automatic stamping and forming equipment for the copper busbar of the electric control box according to claim 2, wherein: The copper bar limiting mechanism (2) comprises an arched frame plate (21) fixed on the upper surface of the workbench (11), track grooves (22) are symmetrically provided on both sides of the upper surface of the arched frame plate (21), an arched lower die seat (23) is fixed at the top center of the arched frame plate (21), and a blanking die hole (231) adapted to the stamping upper die (16) is provided on the upper surface of the arched lower die seat (23).

4. An automatic stamping and forming device for the copper busbar of an electric control box according to claim 3, characterized in that: The upper surface of the arched frame plate (21) is symmetrically provided with movable plates (24) at the front and rear. The bottom of the movable plate (24) is symmetrically provided with sliders (241). The sliders (241) slide inside the track groove (22) and penetrate the track groove (22). A notch is provided in the middle of the movable plate (24) on the front side for discharging materials.

5. The fully automatic stamping and forming equipment for the copper busbar of the electric control box according to claim 4, characterized in that: A limit shaft (26) is evenly rotatably mounted on the upper surface of the movable plate (24), and a circle of V-shaped grooves (261) are provided on the cylindrical surface of the limit shaft (26). A lead screw (25) is rotatably mounted on the upper interior of the arched frame plate (21), and the lead screw (25) is placed between the two track grooves (22). Two adjustment blocks (27) are screwed on the surface of the lead screw (25), and first connecting rods (28) are symmetrically hinged on both sides of the adjustment block (27), and one end of the first connecting rod (28) facing away from the adjustment block (27) is hinged to the bottom of the slider (241).

6. The full-automatic stamping and forming equipment for the copper busbar of the electric control box according to claim 1, characterized in that: The copper bar automatic conveying mechanism (3) includes a swing plate (31) rotating on the front side of the adjustment block (27) and a motor (32) fixed on the rear side of the extension ear plate (17), the output shaft of the motor (32) passes through the surface of the swing plate (31), and a rotating shaft (33) is rotatably mounted on the end of the front surface of the swing plate (31) away from the motor (32), and the rotating shaft (33) is placed above the copper bar limiting mechanism (2). A friction roller (34) is mounted on the surface of the rotating shaft (33), and the friction roller (34) is in contact with the upper surface of the copper bar. A conveying belt mechanism (36) is provided between the output shaft of the motor (32) and the rotating shaft (33), and a locking bolt (35) is also rotatably penetrated on the surface of the swing plate (31), and the ends of the swing plates (31) on both sides are inclined toward the center of the two.

7. An automatic stamping and forming device for the copper busbar of an electric control box according to claim 4, characterized in that: The automatic pushing mechanism (4) includes a push plate (41) sliding on the rear side of the arched lower die base (23) and a main shaft (47) rotating horizontally on the rear side of the fixed column (12), and the push plate (41) is symmetrically provided with a slide rod (42) on the rear side, and the two slide rods (42) both pass through the rear side movable plate (24), and the rear ends of the two slide rods (42) are provided with a connecting plate (44), and the surface of the slide rod (42) is provided with a force storage spring (43), and the force storage spring (43) is placed between the push plate (41) and the rear side movable plate (24), and the rear side of the connecting plate (44) is fixed with a tooth plate (45), and the tooth plate (45) slides through the bottom of the inner part of the slide groove (13).

8. An automatic stamping and forming device for the copper busbar of an electric control box according to claim 7, characterized in that: An incomplete gear (48) is mounted on the surface of the main shaft (47), and the incomplete gear (48) is placed above the tooth plate (45) and meshed with the tooth plate (45). One end of the main shaft (47) is a crankshaft (46), and the surface of the crankshaft (46) is hinged to a second connecting rod (49), and the top of the second connecting rod (49) is hinged to the back of the lifting block (15).

9. The method of using the molding equipment according to claims 1-8, characterized in that: The specific steps include: Step 1: First, adjust the copper bar limiting mechanism (2) according to the width of the copper bar to be punched, place the copper bar between the limiting shafts (26) on both sides, and make the copper bar limited by the V-shaped grooves (261) on both sides. The rotating screw (25) can control the distance between the two moving plates (24) to maintain its limit on the copper bar to be punched, and at the same time, the limiting shaft (26) can be rotated to facilitate the movement of the auxiliary copper bar; Step 2: Install a suitable stamping upper die (16) and an arched lower die base (23) according to the requirements of the stamping, and control the hydraulic cylinder (14) and the copper bar automatic conveying mechanism (3) through the computer according to the position of the stamping, move the copper bar through the copper bar automatic conveying mechanism (3), loosen the locking bolt (35), and due to the deadweight swing plate (31) end will swing downward, so that the friction roller (34) contacts the upper surface of the copper bar, start the motor (32) and drive the rotating shaft (33) to rotate through the conveying belt mechanism (36), and then drive the copper bar to move through the friction between the friction roller (34) and the copper bar to achieve feeding; Step 3: When the lifting block (15) reciprocates up and down, it punches the copper busbars passing below. At the same time, through the cooperation of the second connecting rod (49) on the back and the crankshaft (46), the main shaft (47) can be driven to rotate, and then the incomplete gear (48) is driven to rotate. When the gear on the surface of the incomplete gear (48) meshes with the toothed plate (45), the toothed plate (45) can be pulled to move backward, and then the push plate (41) moves backward to squeeze and store energy in the energy storage spring (43). When the teeth of the incomplete gear (48) rotate beyond the meshing position with the toothed plate (45), the incomplete gear (48) will quickly move forward due to the stored energy of the energy storage spring (43), and then the punched materials are pushed out of the arched lower die base (23) through the push plate (41).

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