A punch forming device for transformer core processing
By integrating punching and blanking processes into transformer core processing equipment, the problems of complex equipment and cumbersome specification switching have been solved, resulting in reduced equipment costs, shorter production lines, and improved processing efficiency.
Patent Information
- Application Number
- CN202611139691.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-30
- Publication Date
- 2026-08-25
AI Technical Summary
Existing transformer core processing equipment is complex in structure, occupies a large production line space, has high equipment procurement and maintenance costs, and is cumbersome to operate when switching between different product specifications, making it difficult to guarantee accuracy and resulting in long changeover cycles, which seriously restricts processing efficiency.
This stamping forming equipment integrates blanking and punching processes into one unit. It adopts an adjustable slide and a swing arm that can rotate in opposite directions, combined with a scissor linkage mechanism, to realize automatic adjustment of the punch and punch head, reduce mold changes and equipment adjustments, and uses a feeding and drive mechanism to ensure accuracy.
It has achieved reduced equipment investment costs, shorter production lines, simpler operation, higher adjustment efficiency, shorter changeover cycles, and improved material utilization and processing accuracy.
Smart Images
Figure CN122625533A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of stamping equipment technology, and in particular to a stamping equipment for processing transformer cores. Background Technology
[0002] Transformer cores are typically made up of a large number of stamped trapezoidal silicon steel sheets stacked together. These silicon steel sheets need to be stamped to form a trapezoidal outer contour and have mounting holes made in them.
[0003] The existing processing method generally involves using a strip of material as the blank, first punching out a trapezoidal outer contour with a blanking machine, and then punching mounting holes with a punching machine. This method has the following technical shortcomings: First, the equipment is complex and the production line occupies a large space. Existing processing usually requires two sets of independent punching equipment and one set of punching equipment to work together. The equipment purchase and maintenance costs are high, and multiple machines are arranged in sequence, resulting in a long production line and a large workshop area.
[0004] Secondly, switching between different product specifications involves extremely cumbersome equipment adjustments. The trapezoidal silicon steel sheets used in different transformer cores and different layers of the same core vary in their bevel angles and sheet widths. Switching specifications requires complex angle adjustments and position calibrations of the punching equipment, relying heavily on manual experience and making it difficult to guarantee accuracy. Simultaneously, the positional parameters of the mounting holes change, necessitating the replacement of punching dies, resulting in high mold-making costs and time-consuming and labor-intensive die-changing operations. These factors lead to extended changeover cycles, increased labor costs, and reduced effective equipment operating hours, severely restricting processing efficiency.
[0005] In view of this, it is indeed necessary to provide a transformer core stamping and forming equipment that integrates the blanking and punching processes and can quickly adapt to the processing of products of different specifications. Summary of the Invention
[0006] (a) Technical problems to be solved The current processing of trapezoidal silicon steel sheets requires separate punching and piercing equipment to be completed in stages, which involves high equipment investment and large production line space. Furthermore, the bevel angle, sheet width, and mounting hole position parameters of different specifications of products vary. When switching specifications, complex angle adjustments, position calibrations, and punching die replacements are required, which are cumbersome to operate, difficult to control in terms of precision, and have long changeover cycles, which seriously restricts processing efficiency.
[0007] To address the aforementioned technical problems, this invention provides a stamping and forming equipment for transformer core processing, which aims to integrate the blanking and punching processes and can quickly and accurately adapt to the processing needs of products with different specifications.
[0008] (II) Technical Solution To achieve the above technical objectives, the present invention adopts the following technical solution: A stamping and forming equipment for processing transformer cores includes a worktable and a pressure device; the worktable is provided with a material conveyor path; The workbench is equipped with a slide that can be adjusted vertically along the material belt's movement path. Two swing arms are mounted on the slide, capable of rotating synchronously in opposite directions horizontally to adjust the opening angle. Each swing arm is fixedly equipped with a tool holder, on which are mounted a vertically movable punch, a cutting edge plate adapted to the punch, and a first elastic element for driving the punch upwards to reset. A first pressure rod is fixedly mounted on the upper side of the punch. The lower end of the tool holder has a guide groove aligned with the punch's extension direction. The two punches are symmetrically distributed in a V-shape, with the axis of symmetry perpendicular to the direction of the material belt's movement path. A sliding groove aligned with the material belt's movement path is formed on the workbench, and several sliding seats are slidably connected to the groove. The sliding seat is equipped with a punch that can move up and down, a lower die that matches the punch, and a second elastic element for driving the punch to return to its original position. A second pressure rod is fixed on the upper side of the punch. The sliding seat is connected by multiple sets of cross linkages to form a scissor linkage mechanism. When the scissor linkage mechanism extends or retracts, the sliding seat always maintains an equidistant distribution. Guide pins are fixed on the two hinge points of the scissor linkage mechanism, and the two guide pins are slidably connected to the two guide grooves. The punch and punch head are located on the upper side of the material strip movement path, and the cutting edge plate and lower die are located on the lower side of the material strip movement path. The pressure device is equipped with a pressure plate for driving the first pressure rod and the second pressure rod to move down.
[0009] In some preferred embodiments, the stamping forming equipment includes a feeding mechanism for driving the slide to move linearly, thereby automatically adjusting the position of the slide; the feeding mechanism consists of a first lead screw mechanism and a first drive motor; the first lead screw mechanism includes a threaded first sleeve and a first lead screw, wherein the first sleeve is fixedly connected to the slide; the first lead screw is rotatably mounted on the underside of the worktable and perpendicular to the extension direction of the material strip movement path; the first drive motor is fixedly mounted on the underside of the worktable and is drivenly connected to the first lead screw.
[0010] In some preferred embodiments, the stamping forming equipment includes a drive mechanism for driving two swing arms to rotate synchronously in opposite directions, thereby automatically adjusting the opening angle of the two swing arms. The drive mechanism consists of a second lead screw mechanism and a second drive motor. The second lead screw mechanism includes a threaded second sleeve and a second lead screw. The second lead screw is rotatably mounted on the slide, and its axis is perpendicular to the direction of the material strip movement path. Each of the two swing arms is connected to the second sleeve through a diagonal connecting rod, and the two ends of the diagonal connecting rod are rotatably connected to the swing arm and the second sleeve, respectively. The two sets of punches, swing arms, tool holders, and cutting edge plates are symmetrically distributed about the axis of the second lead screw.
[0011] In some preferred embodiments, when the pressure plate moves downward, the punch and the lower die first punch holes in the strip, and then the punch and the cutting edge plate cut the strip; during the cutting process, the punch passes through the opening on the strip and enters the inner cavity of the lower die.
[0012] In some preferred embodiments, the slide is fixedly connected to a support plate, which is located on the upper side of the worktable and slides in cooperation with the worktable. The support plate has a hollow structure. The lower end of the tool holder is provided with a sliding support part, which slides in contact with the upper surface of the support plate.
[0013] In some preferred embodiments, the worktable is provided with an inlet, a support groove and an outlet that are adapted to the width of the material belt along the material belt movement path.
[0014] In some preferred embodiments, the tool holder includes an upper beam and a lower beam distributed vertically, with the punch located on the lower side of the upper beam and the cutting edge plate fixed on the upper side of the lower beam; the first pressure rod is movably mounted on the upper beam, and a first pressure cap is provided at the upper end of the first pressure rod; the first elastic element is a spring sleeved on the outside of the first pressure rod, and the two ends of the first elastic element abut against the first pressure cap and the upper beam respectively; the punch is bolted to a tool holder, and the tool holder is fixedly connected to the lower end of the first pressure rod.
[0015] In some preferred embodiments, the sliding seat is composed of a sliding part and an arc-shaped arm that are fixedly connected. The sliding part is slidably engaged with the slide groove, and the lower mold is fixedly mounted on the sliding part. The second pressure rod is movably mounted on the arc-shaped arm, and the upper end of the second pressure rod is provided with a second pressure cap. The second elastic element is a spring sleeved on the outside of the second pressure rod, and the two ends of the second elastic element are respectively engaged with the second pressure cap and the arc-shaped arm.
[0016] In some preferred embodiments, a plurality of sliders are slidably connected to the groove, the sliders are located at the middle position of adjacent sliding seats, and the sliders are fixedly connected to the corresponding hinge points in the scissor linkage mechanism.
[0017] In some preferred embodiments, four sliding seats are provided, with the two middle sliding seats located between the two tool holders, and the hinge point in the middle of the scissor linkage mechanism is fixed to the worktable.
[0018] (III) Beneficial Technical Effects Compared with the prior art, the stamping forming equipment of the present invention has the following beneficial technical effects: 1. This invention integrates the punch and punch head into the same equipment and drives them together with the same pressure plate, realizing integrated processing of blanking and punching processes. It eliminates the need for multiple independent machines, significantly reduces equipment investment costs, greatly shortens the production line length, and effectively improves the utilization rate of workshop space.
[0019] 2. In this invention, the punches are mounted on a swing arm that can rotate synchronously in opposite directions, and the slide can be adjusted in position along the width of the strip. By driving the swing arm to rotate and the slide to move, the included angle and relative position of the two punches can be quickly changed, enabling the equipment to adapt to the punching requirements of trapezoidal silicon steel sheets with different bevel angles and widths. The operation is simple, the adjustment efficiency is high, and there is no need to replace the punching die, thus avoiding the cost of mold opening.
[0020] 3. In this invention, the sliding seat and the tool holder are linked by a scissor-type linkage mechanism. When the angle or position of the punch is adjusted, the position of the punch and the lower die will automatically adapt and adjust accordingly. There is no need to adjust the punching parts one by one or replace the mold, which greatly shortens the product changeover cycle, reduces the intensity of manual operation, and ensures the relative accuracy between the punching position and the punching contour.
[0021] 4. In this invention, the two punches are arranged symmetrically in a V-shape. During the punching process, the hypotenuses of two adjacent and complementary trapezoidal silicon steel sheets are formed synchronously. Combined with precise control of the feeding pitch, punching and forming without excess material can be achieved, the material utilization rate is significantly improved, and the raw material cost is effectively reduced. Attached Figure Description
[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.
[0023] Figure 1 This is a schematic diagram of the front structure of the stamping forming equipment in an embodiment of the present invention; Figure 2 This is a schematic diagram of the rear structure of the stamping forming equipment in an embodiment of the present invention; Figure 3 This is a schematic diagram of the stamping forming equipment after the pressure device is removed in an embodiment of the present invention; Figure 4 This is a schematic diagram of the stamping forming equipment after the pressure device and the support groove are removed in an embodiment of the present invention; Figure 5 This is a schematic diagram of the feeding mechanism in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the swing arm and the tool holder in an embodiment of the present invention; Figure 7 This is a schematic diagram of the mating structure of the sliding seat, cross link, and slide groove in an embodiment of the present invention; Figure 8 This is a schematic diagram of the partially cut-open structure of the sliding seat in an embodiment of the present invention; Figure 9This is a schematic diagram of the motion state of the tool holder and the sliding seat when the two swing arms rotate synchronously in opposite directions in an embodiment of the present invention; Figure 10 This is a schematic diagram of the motion state of the tool holder and the sliding seat when the slide moves in an embodiment of the present invention; Figure 11 This is a schematic diagram of the working state of the stamping forming equipment in an embodiment of the present invention; Figure 12 This is a schematic diagram of the forming state of the strip after one stamping in an embodiment of the present invention.
[0024] Reference numerals: 1-Workbench; 2-Bearing plate; 3-Sliding support; 4-Tool holder; 401-Lower beam; 402-Upper beam; 5-Outlet; 6-Support groove; 7-Pressure plate; 8-Pressure device; 9-Swing arm; 10-First pressure rod; 101-First pressure cap; 11-First elastic element; 12-Punch; 13-Inlet; 14-Lower die; 15-Cross linkage; 16-Sliding seat; 161-Arch-shaped arm; 16 2-Sliding part; 17-Second drive motor; 18-Slide plate; 19-Angled connecting rod; 20-Second lead screw; 21-Second elastic element; 22-Second threaded sleeve; 23-Second pressure rod; 231-Second pressure cap; 24-Slide groove; 25-Cutting edge plate; 26-Punch; 27-Tool holder; 28-First threaded sleeve; 29-First drive motor; 30-First lead screw; 31-Guide groove; 32-Guide pin; 33-Slider. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the protection scope of the present invention.
[0026] like Figure 1 , Figure 2 As shown, this embodiment provides a stamping and forming equipment for processing transformer cores, including a worktable 1 and a pressure device 8.
[0027] Reference Figures 1-6As shown, the workbench 1 is provided with a material belt movement path to guide the material belt to move in a straight line; a slide 18 capable of moving in a straight line is installed on the workbench 1, and the position of the slide 18 can be adjusted along the vertical direction of the material belt movement path; two swing arms 9 capable of rotating synchronously in opposite directions along the horizontal direction are installed on the slide 18, and the rotation center position of the swing arms 9 is fixed, so that the opening angle of the two swing arms 9 can be adjusted by rotation; each swing arm 9 is fixedly provided with a knife holder 4, and a punch 26, a cutting edge plate 25 and a first elastic element 11 are installed on the knife holder 4; the punch 26 is movably connected to the knife holder 4 and can move up and down. The lower end of the punch 26 is the cutting edge, and a first pressure rod 10 is fixed on the upper side of the punch 26; the cutting edge plate 25 is located below the punch 26, and the two are adapted to punch the strip; the first elastic element 11 can apply an upward thrust to the punch 26 to drive the punch 26 to move upward to the reset state. The first elastic element 11 can be a spring or a spring sheet or other common elastic components; the lower end of the knife holder 4 is provided with a guide groove 31 that is consistent with the extension direction of the punch 26; when the two swing arms 9 rotate synchronously in opposite directions, the two punches 26 are always symmetrically distributed in a V shape, and the axis of symmetry is perpendicular to the direction of the strip movement path.
[0028] Reference Figure 4 , Figures 7-10As shown, the workbench 1 has a straight-line extending groove 24, which extends in the same direction as the material strip's movement path. Several sliding seats 16 are slidably connected to the groove 24. Each sliding seat 16 is equipped with a punch 12, a lower die 14, and a second elastic element 21. The punch 12 is movably connected to the sliding seat 16 and can move up and down. A second pressure rod 23 is fixed to the upper side of the punch 12. The lower die 14 is located below the punch 12, and the two are adapted to punch the material strip. The second elastic element 21 can apply an upward thrust to the punch 12 to drive it upward to the reset state. The second elastic element 21 can be a spring or a sheet spring, or other common elastic components. The sliding seats 16 are connected by multiple sets of cross links 15 to form a scissor-type linkage mechanism. During the extension and retraction of the scissor-type linkage mechanism, the position of the sliding seats 16 changes accordingly but always remains equidistantly distributed. The cross link 15 in the fork linkage mechanism has various specific arrangements, which can be implemented with reference to common products such as scissor lifts and linkage telescopic gates in the prior art; guide pins 32 are fixed at the two hinge points in the scissor linkage mechanism, and the two guide pins 32 extend into the two guide grooves 31 respectively, and the guide pins 32 slide with the corresponding guide grooves 31; thus, when the two tool holders 4 move with the slide plate 18 or rotate with the swing arm 9, they will drive the scissor linkage mechanism to extend and retract, so that the sliding seat 16 automatically adjusts its position; the punch 26 and the punch head 12 are located on the upper side of the material strip movement path, and the cutting edge plate 25 and the lower die 14 are located on the lower side of the material strip movement path; thus, when the punch 26 and the punch head 12 are both in the reset state, when the material strip moves on the material strip movement path, it can pass through the space between the punch 26 and the cutting edge plate 25 and between each punch head 12 and the corresponding lower die 14 in sequence.
[0029] like Figures 1-4 As shown, the pressure device 8 is a crank press or a hydraulic press, and its output end is equipped with a pressure plate 7 that can move up and down. The pressure plate 7 is used to drive the first pressure rod 10 and the second pressure rod 23 to move downward, so as to drive the punch 26 to complete the punching action and drive the punch 12 to complete the punching action.
[0030] Reference Figures 1-4 , Figure 11 , Figure 12 As shown, the working process and principle of this stamping forming equipment are as follows: (1) The automatic feeding system unwinds and levels the roll material, and feeds the strip intermittently into the strip movement path on the upper side of the workbench 1 at a set step distance; (2) When the strip reaches the stamping station, it stops. The pressure device 8 drives the pressure plate 7 to move downward. After the pressure plate 7 abuts against the first pressure rod 10 and the second pressure rod 23, it drives the punch 26 and the punch head 12 to move downward. The punch head 12 cooperates with the lower die 14 to punch the strip. The punch 26 cooperates with the cutting edge plate 25 to cut the strip and obtain a trapezoidal silicon steel sheet with mounting holes. (3) After punching and blanking are completed, the pressure device 8 drives the pressure plate 7 to move upward. The punch 26 is driven by the first elastic element 11 to separate from the cutting edge plate 25 and reset upward. The punch 12 is driven by the second elastic element 21 to separate from the lower die 14 and reset upward. The trapezoidal silicon steel sheet formed thereafter is taken away by the unloading system (such as air blowing or robot arm). The automatic feeding system drives the material belt to step forward one station and enter the next stamping cycle.
[0031] Reference Figure 3 , Figure 4 , Figure 9 , Figure 10 As shown, when processing trapezoidal silicon steel sheets of different specifications, the equipment can be adjusted in the following ways: (1) Drive the two swing arms 9 to rotate with the help of external force to adjust the opening angle of the two swing arms 9 so that the two punches 26 are aligned with the two inclined sides of the trapezoidal silicon steel sheet to be processed. (2) Drive the slide 18 to move with the help of external force, and adjust the position of the two punches 26 in the width direction of the strip. Since the two punches 26 are distributed in a V shape, the length of the strip between the two punches 26 will change linearly during the movement of the slide 18 until the two punches 26 correspond to the two inclined sides of the trapezoidal silicon steel sheet to be processed.
[0032] (3) During the adjustment of the position and direction of the punch 26, the tool holder 4 drives the scissor linkage mechanism to extend and retract, so that the sliding seat 16 can move appropriately, thereby automatically adjusting each set of punches 12 and lower die 14 to the corresponding position, so that no additional adjustment operation is required for punches 12 and lower die 14.
[0033] During continuous stamping, when each punch 26 cuts the strip, the hypotenuses of two adjacent and complementary trapezoidal silicon steel sheets will be formed simultaneously. By precisely controlling the feeding pitch and reasonably setting the number of punches 12 and lower dies 14, it is possible to cut a complete trapezoidal silicon steel sheet between the two punches 26, while simultaneously forming a complementary and identical trapezoidal silicon steel sheet on one side of the conveying direction, thus achieving the forming effect of "two out of one" with no excess material.
[0034] In this embodiment of the invention, the stamping forming equipment includes a feeding mechanism, which is used to drive the slide 18 to move linearly so as to automatically adjust the position of the slide 18. The feeding mechanism can be a linear drive actuator commonly used in this technical field, such as various power cylinders or composite drive mechanisms such as pneumatic cylinders, hydraulic cylinders, etc.
[0035] like Figure 5 As shown, in a preferred embodiment, the feeding mechanism consists of a first lead screw mechanism and a first drive motor 29; the first lead screw mechanism includes a first threaded sleeve 28 and a first lead screw 30, wherein the first threaded sleeve 28 is fixedly connected to the slide plate 18; the first lead screw 30 is rotatably mounted on the lower side of the worktable 1 and is perpendicular to the extension direction of the material belt movement path; the first drive motor 29 is fixedly mounted on the lower side of the worktable 1 and is connected to the first lead screw 30 for transmission.
[0036] Therefore, when the first drive motor 29 drives the first lead screw 30 to rotate, the first screw sleeve 28 drives the slide 18 to move linearly along the vertical direction of the material strip's movement path. By controlling the rotation angle of the first drive motor 29, precise control of the displacement of the slide 18 can be achieved, thereby ensuring the positioning accuracy of the two punches 26 in the width direction of the material strip. When the first drive motor 29 stops running, the first lead screw mechanism can lock the position of the slide 18 through its self-locking function, thus preventing the slide 18 from shifting during the stamping operation, without the need for additional locking components.
[0037] In this embodiment of the invention, the stamping forming equipment includes a drive mechanism for driving two swing arms 9 to rotate synchronously in opposite directions, thereby automatically adjusting the opening angle of the two swing arms 9. As a basic implementation, the drive mechanism can employ a conventional rotary drive device, such as a low-speed motor. Specifically, the two swing arms 9 can be connected via a synchronous gear transmission mechanism, and one of the swing arms 9 can be connected to the low-speed motor, thus achieving the driving and control of the synchronous counter-rotation of the two swing arms 9. This method has a simple structure, low cost, and can meet basic swing angle adjustment requirements.
[0038] like Figure 2 , Figure 3As shown in the preferred embodiment, considering that the adjustment accuracy of the bevel angle of the trapezoidal silicon steel sheet directly affects the punching quality, and that the angle needs to be kept stable after adjustment to avoid displacement caused by punching vibration. The drive mechanism consists of a second lead screw mechanism and a second drive motor 17; wherein, the second lead screw mechanism includes a second threaded sleeve 22 and a second lead screw 20; the second lead screw 20 is rotatably mounted on the slide 18, and its axis is perpendicular to the direction of the material strip movement path; each of the two swing arms 9 is connected to the second threaded sleeve 22 through a diagonal connecting rod 19, and the two ends of the diagonal connecting rod 19 are rotatably connected to the swing arm 9 and the second threaded sleeve 22 respectively; the two sets of punches 26, swing arms 9, knife holder 4 and cutting edge plate 25 are symmetrically distributed about the axis of the second lead screw 20.
[0039] Therefore, when the second drive motor 17 drives the second lead screw 20 to rotate, the second screw sleeve 22 moves along the axial direction of the second lead screw 20, and the two inclined connecting rods 19 respectively drive the two swing arms 9 to rotate synchronously in opposite directions around their respective rotation centers. By controlling the rotation angle of the second drive motor 17, precise control of the opening angle of the two swing arms 9 can be achieved. When the second drive motor 17 stops running, the second lead screw mechanism relies on its self-locking function to ensure that the angles of the two swing arms 9 and the punch 26 remain stable during the stamping process. The second drive motor 17 is preferably a servo motor, so as to facilitate precise control of the angle of the punch 26 through a numerical control system.
[0040] In a preferred embodiment, when the pressure plate 7 moves downward, the punch 12 and the lower die 14 first punch holes in the strip, and then the punch 26 and the cutting edge plate 25 cut the strip. During the cutting process of the strip by the punch 26, the punch 12 passes through the opening on the strip and enters the inner cavity of the lower die 14, thereby providing a stable limiting effect on the strip, avoiding displacement of the strip during the cutting process, and improving the processing accuracy.
[0041] Reference Figure 1 , Figure 3 , Figure 4 As shown in the preferred embodiment, the slide 18 is fixedly connected to a support plate 2, which is located on the upper side of the worktable 1 and slides in cooperation with the worktable 1. The support plate 2 has a hollow structure to avoid interference with components such as the sliding seat 16 that are placed on the upper side of the worktable 1. The lower end of the tool holder 4 is provided with a sliding support part 3, which slides in contact with the upper surface of the support plate 2. Thus, during the punching operation, the tool holder 4 is provided with stable vertical support by the support plate 2, which optimizes the force on the tool holder 4, effectively avoids the tool holder 4 from swaying and vibrating in the vertical direction, and improves the vertical positioning accuracy and movement stability of the punch 26. When the slide 18 moves, the support plate 2 and the slide 18 support the tool holder 4, the swing arm 9 and other components to move as a whole to ensure the matching accuracy of these components.
[0042] Reference Figures 1-3 , Figure 11 As shown in the preferred embodiment, the worktable 1 is provided with an inlet 13, a support groove 6, and an outlet 5, which are adapted to the width of the material strip, in sequence along the material strip movement path. The inlet 13 is located at the feeding end of the worktable 1 and is used to initially guide and center the material strip delivered by the automatic feeding system to ensure that the material strip enters the material strip movement path in the correct posture. The support groove 6 is distributed on the upper side of the worktable 1 and extends along the material strip movement path to provide support and limit the material strip, preventing the material strip from bending or shifting during movement, so as to ensure the stamping accuracy. The support groove 6 can adopt a multi-segment design and be detachably installed on the worktable 1 so as to make adaptive adjustments according to the position changes of components such as the sliding seat 16 and the tool holder 4. The outlet 5 is located at the discharge end of the worktable 1 and is used to discharge the material strip from the worktable 1.
[0043] like Figure 4 , Figure 6 As shown, in a preferred embodiment, the tool holder 4 includes an upper beam 402 and a lower beam 401 distributed vertically. The punch 26 is located on the lower side of the upper beam 402, and the cutting edge plate 25 is fixed on the upper side of the lower beam 401. The first pressure rod 10 is movably mounted on the upper beam 402, and the upper end of the first pressure rod 10 is provided with a first pressure cap 101. The first elastic element 11 is a spring and there are multiple springs, which are respectively sleeved on the outside of each first pressure rod 10. The upper end of the first elastic element 11 abuts against the first pressure cap 101, and the lower end abuts against the upper beam 402. Furthermore, the punch 26 is bolted to a tool holder 27, and the tool holder 27 is fixedly connected to the lower end of the first pressure rod 10.
[0044] like Figure 7 , Figure 8 As shown, in a preferred embodiment, the sliding seat 16 is composed of a sliding part 162 and an arc-shaped arm 161 that are fixedly connected. The sliding part 162 is slidably engaged with the slide groove 24, and the lower mold 14 is mounted and fixed on the sliding part 162. The second pressure rod 23 is movably mounted on the arc-shaped arm 161, and the upper end of the second pressure rod 23 is provided with a second pressure cap 231. The second elastic element 21 is a spring and is sleeved on the outside of the second pressure rod 23. The upper end of the second elastic element 21 abuts against the second pressure cap 231, and the lower end abuts against the arc-shaped arm 161.
[0045] like Figures 7-10As shown, in a preferred embodiment, a plurality of sliders 33 are slidably connected to the slide groove 24. The sliders 33 are located in the middle of adjacent sliding seats 16, and the sliders 33 are fixedly connected to the corresponding hinge points in the scissor linkage mechanism. Thus, the sliders 33 can provide a certain guiding and supporting effect for the scissor linkage mechanism to improve the stability and accuracy of the telescopic operation of the scissor linkage mechanism.
[0046] like Figures 7-10 As shown, in a preferred embodiment, there are four sliding seats 16, with the two middle sliding seats 16 located between the two tool holders 4, and the hinge point in the middle of the scissor linkage mechanism is fixed on the worktable 1.
[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A stamping and forming equipment for processing transformer cores, comprising a worktable and a pressure device; the worktable is provided with a material conveying path; characterized in that: The workbench is equipped with a slide that can be adjusted vertically along the material belt's movement path. Two swing arms are mounted on the slide, capable of rotating synchronously in opposite directions horizontally to adjust the opening angle. Each swing arm is fixedly equipped with a tool holder, which houses a vertically movable punch, a cutting edge plate adapted to the punch, and a first elastic element for driving the punch upwards to reset. A first pressure rod is fixedly mounted on the upper side of the punch. The lower end of the tool holder has a guide groove aligned with the punch's extension direction. The two punches are symmetrically distributed in a V-shape, with the axis of symmetry perpendicular to the direction of the material belt's movement path. The workbench has openings aligned with the material belt's movement path. A slidable groove with consistent direction is provided, and several sliding seats are slidably connected to the groove. Each sliding seat is equipped with a punch capable of moving up and down, a lower die adapted to the punch, and a second elastic element for driving the punch to return to its original position. A second pressure rod is fixed to the upper side of the punch. The sliding seats are connected by multiple sets of cross linkages to form a scissor-type linkage mechanism. During the extension and retraction of the scissor-type linkage mechanism, the sliding seats remain equidistantly distributed. Guide pins are fixed to the two hinge points of the scissor-type linkage mechanism, and the two guide pins are slidably connected to two guide grooves. The pressure device is equipped with a pressure plate for driving the first and second pressure rods downwards.
2. The stamping and forming equipment for processing transformer cores according to claim 1, characterized in that: The stamping forming equipment includes a feeding mechanism, which consists of a first lead screw mechanism and a first drive motor. The first lead screw mechanism includes a first threaded sleeve and a first lead screw, wherein the first threaded sleeve is fixedly connected to the slide. The first lead screw is rotatably mounted on the lower side of the worktable and is perpendicular to the extension direction of the material strip movement path. The first drive motor is fixedly mounted on the lower side of the worktable and is drivenly connected to the first lead screw.
3. The stamping and forming equipment for processing transformer cores according to claim 1, characterized in that: The stamping forming equipment includes a drive mechanism, which consists of a second lead screw mechanism and a second drive motor. The second lead screw mechanism includes a second threaded sleeve and a second lead screw. The second lead screw is rotatably mounted on the slide, and its axis is perpendicular to the direction of the material strip movement path. Each of the two swing arms is connected to the second threaded sleeve through a diagonal connecting rod, and the two ends of the diagonal connecting rod are rotatably connected to the swing arm and the second threaded sleeve, respectively. The two sets of punches, swing arms, tool holders and cutting edge plates are symmetrically distributed about the axis of the second lead screw.
4. The stamping and forming equipment for processing transformer cores according to claim 1, characterized in that: When the pressure plate moves downward, the punch and the lower die first punch holes in the strip, and then the punch and the cutting edge plate cut the strip. During the cutting process, the punch passes through the opening on the strip and enters the inner cavity of the lower die.
5. The stamping and forming equipment for processing transformer cores according to claim 1, characterized in that: The slide is fixedly connected to a support plate, which is located on the upper side of the worktable and slides in cooperation with the worktable. The support plate has a hollow structure. The lower end of the tool holder is provided with a sliding support part, which slides in contact with the upper surface of the support plate.
6. The stamping and forming equipment for processing transformer cores according to claim 1, characterized in that: The worktable is provided with an inlet, a support groove, and an outlet, which are adapted to the width of the material belt, in sequence along the material belt movement path.
7. The stamping and forming equipment for processing transformer cores according to claim 1, characterized in that: The tool holder includes an upper beam and a lower beam distributed vertically. The punch is located on the lower side of the upper beam, and the cutting edge plate is fixed on the upper side of the lower beam. The first pressure rod is movably mounted on the upper beam, and the upper end of the first pressure rod is provided with a first pressure cap. The first elastic element is a spring sleeved on the outside of the first pressure rod, and the two ends of the first elastic element abut against the first pressure cap and the upper beam, respectively.
8. The stamping and forming equipment for processing transformer cores according to claim 7, characterized in that: The sliding seat is composed of a sliding part and an arc-shaped arm that are fixedly connected. The sliding part is slidably engaged with the slide groove. The lower mold is fixedly mounted on the sliding part. The second pressure rod is movably mounted on the arc-shaped arm. The upper end of the second pressure rod is provided with a second pressure cap. The second elastic element is a spring sleeved on the outside of the second pressure rod. The two ends of the second elastic element are respectively engaged with the second pressure cap and the arc-shaped arm.
9. The stamping and forming equipment for processing transformer cores according to claim 1, characterized in that: Several sliders are slidably connected to the groove. The sliders are located in the middle of adjacent sliding seats, and the sliders are fixedly connected to the corresponding hinge points in the scissor linkage mechanism.
10. The stamping and forming equipment for processing transformer cores according to claim 1, characterized in that: The sliding seats are provided in four parts, with the two middle sliding seats located between the two tool holders. The hinge point in the middle of the scissor linkage mechanism is fixed to the worktable.