Transformer iron core silicon steel sheet punch forming die based on automatic continuous sheet taking

Abstract

The invention discloses a transformer iron core silicon steel sheet punch forming die based on automatic continuous sheet taking, relates to the technical field of silicon steel sheet punching, and aims to solve the problem that when stacked initial blanks move into a punching die one by one, the punching action is discontinuous or even interrupted due to the fact that the stacked initial blanks cannot be intermittently and continuously separated and merged into the position. On one hand, a separation elastic plate swings in a reciprocating mode under the extrusion action of a reciprocating swing roller, so that a primary blank body completes continuous'twisting 'separation under the blocking action of the separation elastic plate, and then a bottom primary blank continues to advance and completes constant-speed feeding under the swing action of a reciprocating friction feeding roller, so that the whole feeding action is formed; and on the other hand, initial blank feeding parameters are obtained in real time in a control system, punching feeding control over the initial blanks is completed in combination with numerical calculation, punching feeding is intelligently controlled, and therefore intermittent continuous separation and accurate in-place can be achieved when the stacked initial blanks move into a punching die one by one, and the punching process is continuous.

Description

Technical Field

[0001] The invention relates to the technical field of silicon steel sheet stamping, and in particular to a transformer iron core silicon steel sheet stamping forming die based on automatic continuous sheet taking. Background Art

[0002] The transformer core is the main magnetic circuit part of the transformer, which is usually made of hot-rolled or cold-rolled silicon steel sheets with high silicon content and coated with insulating paint on the surface. The processing technology of transformer core silicon steel sheets includes the following steps: shearing, stamping, flattening, laminating and welding. In the stamping process, the silicon steel sheets that have been sheared to the required length and width are stamped to form core silicon steel sheets of specific shape and size.

[0003] For the processing method of stamping and forming a large number of silicon steel sheets to prepare transformer cores, in order to reduce the verticality deviation of the stamped side of the silicon steel sheet, shearing and stamping are usually performed continuously. The first step is to shear the continuously wound silicon steel sheet coil to obtain the iron core to be formed into a blank, and then the blanks are stacked and stamped in sequence to obtain the finished product. In this process, the purpose of stamping after shearing is to reduce the stamping force of the silicon steel sheet, thereby reducing the verticality deviation and fracture horizontal line phenomenon on the side of the silicon steel sheet.

[0004] However, for the blanks, the key to the stable forming of the transformer core is to stably stack the blanks into the stamping die for stamping. That is to say, the technical difficulty lies in that when the stacked blanks are moved into the stamping die one by one, they cannot be intermittently and continuously separated and put into place, resulting in discontinuous or even interrupted stamping action. For this reason, the present application proposes a solution. Summary of the invention

[0005] The purpose of the present invention is to provide a transformer core silicon steel sheet stamping forming die based on automatic continuous sheet picking, which is used to solve the problem that when stacked embryos are moved one by one into the stamping die, they cannot be intermittently and continuously separated and put into position, resulting in discontinuous or even interrupted stamping action; on the one hand, the separation spring plate produces reciprocating swing under the squeezing action of the reciprocating swinging roller, so that the embryo body completes continuous "driving" separation under the blocking action of the separation spring plate, and then the bottom embryo continues to move forward and completes uniform speed feeding under the swinging action of the reciprocating friction feed roller to constitute the entire feeding action; on the other hand, the embryo feeding parameters are obtained in real time in the control system, and the stamping feeding control of the embryo is completed in combination with numerical calculation, so that the stamping feeding is intelligently controlled, so that the stacked embryos can be intermittently and continuously separated and accurately put into position when they are moved one by one into the stamping die, and the stamping process is continuous.

[0006] The object of the present invention can be achieved by the following technical scheme: a transformer core silicon steel sheet stamping forming die based on automatic continuous sheet taking comprises a workbench, a stamping die assembly is installed on one side of the upper end of the workbench, and a control panel is embedded outside the workbench, a rotating frame is hingedly connected to one side of the workbench corresponding to the stamping die assembly, a continuous sheet taking assembly for stacking primary blank feed is installed on the upper end of the rotating frame, the continuous sheet taking assembly comprises a feed bar symmetrically arranged on a carrying plate, a fixed plate and a separation spring plate are installed between the bottom ends of the front sides of the feed bar, and the feed bar is close to the fixed plate. A conveyor belt corresponding to the feeding side of the stamping die assembly is arranged below the fixed plate, and an intermittent feeding assembly is arranged on a pair of the feed bars along the feeding direction of the separation spring plate and the conveyor belt. The intermittent feeding assembly includes a swinging roller and a friction feed roller swingably connected to the feed bar, and the outer ring side of the swinging roller contacts the concave side of the separation spring plate; the stamping die assembly includes a machine table and a lower template, a hydraulic cylinder is installed on the upper end of the machine table, and an upper template vertically aligned with the lower template is installed on the output end of the hydraulic cylinder, and a mold cavity aligned with the end of the conveyor belt is formed between the upper template and the lower template.

[0007] It is further configured as follows: the intermittent feeding assembly also includes a rotating rod sequentially arranged between the feed bars, and a rocker rod 2 and a rocker rod 1 are installed on the outside of the rotating rod so as to rotate sequentially along the feeding direction of the conveyor belt. The rocker rod 2 and the rocker rod 1 are fixedly connected to the swing roller and the friction feed roller through the jacket 2 and the jacket 1 respectively.

[0008] It is further configured as follows: the feed bar is provided with an arc-shaped rotating hole with the rotating rod as the axis, one end of the rocker rod 1 and the rocker rod 2 pass through the rotating hole and extend to the outer end and are respectively connected to the driven disk 1 and the driven disk 2; the feed bar is provided with a motor 2 installed in the middle portion between the driven disk 1 and the driven disk 2; the output end of the motor 2 is provided with an active disk frictionally connected to the driven disk 1 and the driven disk 2.

[0009] It is further configured as follows: a geometric slide groove is opened at the outer edge of the inner side of the driven disk 1 and the driven disk 2, and the geometric slide groove is a closed slide groove formed by the smooth intersection of two circular slide grooves; and a guide block matching the geometric slide groove is installed at one end of the rocker arm 1 and the rocker arm 2 extending to the outside of the feed bar.

[0010] It is further configured that: a through groove is opened in the portion of the carrying plate corresponding to the conveyor belt, and evenly spaced rubber nails are installed on the outer surface of the conveyor belt, and the upper surface of the rubber nails at the top is flush with the upper surface of the carrying plate.

[0011] It is further configured as follows: a twin-screw is rotatably mounted on one end of the carrier plate away from the stamping die assembly, and a motor connected to the twin-screw is mounted outside the carrier plate.

[0012] It is further configured as follows: sliding seats connected to the feed bar are respectively sleeved outside the threaded parts in opposite directions on the double-rotation screw, and a sliding block slidably connected to the guide groove opened on the bearing plate is installed at the bottom of the feed bar.

[0013] It is further configured that: a bottom plate is installed at the bottom of the workbench, and an electric push rod whose output end is rotatably connected to the rotating frame is hinged on the bottom plate.

[0014] It is further configured that: the control panel is built with a feed control system, and the feed control system includes a preform shape and position acquisition unit, a feed analysis unit, a loading and unloading control unit and a stamping management unit that are communicatively connected; the preform shape and position acquisition unit is used to acquire shape and position values ​​in the process of stacking preforms and feeding, wherein the shape and position values ​​include size data and coordinate data, and the size data and coordinate data are sent to the feed analysis unit;

[0015] The feeding analysis unit receives the size data and the coordinate data to perform data analysis on the feeding process of the primary embryo, and generates an abnormal feeding signal and a normal feeding signal, and sends the abnormal feeding signal and the normal feeding signal to the loading and unloading control unit;

[0016] The loading and unloading control unit receives the abnormal feeding signal and the normal feeding signal to control the feeding of the preform, and the loading and unloading control unit is used to control the opening and closing of the motor 1, the motor 2 and the electric push rod.

[0017] The present invention has the following beneficial effects:

[0018] 1. The present invention aims to solve the problem that when stacked pre-embryos are moved one by one into a stamping die, they cannot be separated and put into position intermittently and continuously, resulting in discontinuous or even interrupted stamping action. On the one hand, the separation spring plate is reciprocated under the squeezing action of the reciprocating swinging roller, so that the main body of the pre-embryos is continuously "driven" and separated under the blocking action of the separation spring plate, and then the bottom pre-embryos continue to move forward and complete the uniform speed feeding under the swinging action of the reciprocating friction feed roller to form the entire feeding action; on the other hand, the pre-embryo feeding parameters are obtained in real time in the control system, and the stamping feeding control of the pre-embryos is completed in combination with numerical calculation, so that the stamping feeding is intelligently controlled, so that when the stacked pre-embryos are moved one by one into the stamping die, they can be separated and put into position intermittently and accurately, and the stamping process is continuous;

[0019] 2. By applying intermittent feeding action to the stacked pre-embroids, the stacked pre-embroids can achieve uniform intermittent feeding in the process of continuous "page" feeding; specifically: the stacked pre-embroids fall onto the conveyor belt and are fed by friction of the rubber nails, and the bottom pre-embroids advance rapidly forward and drive the main body of the pre-embroids to follow up. On the one hand, the separation spring plate swings back and forth under the squeezing action of the reciprocating swinging roller, so that the main body of the pre-embroids completes continuous "driving" separation under the blocking action of the separation spring plate; on the other hand, the bottom pre-embroid continues to move forward and completes uniform feeding under the swinging action of the reciprocating friction feed roller, thus completing the feeding process of a single pre-embroid, thereby solving the problem that the stacked pre-embroids cannot be intermittently and continuously separated and put into position when they move one by one into the stamping die, resulting in discontinuous or even interrupted stamping action. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a side cross-sectional schematic diagram of the present invention;

[0023] Figure 3 It is a structural diagram of the continuous film taking assembly of the present invention;

[0024] Figure 4 It is a side cross-sectional view of the continuous film taking assembly of the present invention;

[0025] Figure 5 It is a schematic diagram of the installation of the adjustment mechanism of the separation spring plate of the present invention;

[0026] Figure 6 It is a structural exploded diagram of the intermittent feeding assembly of the present invention;

[0027] Figure 7 It is a schematic diagram of synchronous driving of the swing rod 1 and the swing rod 2 of the present invention;

[0028] Figure 8 It is a schematic diagram of adjusting the feed bar of the present invention;

[0029] Fig. 9 This is a schematic diagram of stacking primary embryo feed of the present invention;

[0030] Fig.10 It is a structural diagram of the primary blank before and after stamping processing of the present invention.

[0031] In the figure: 1. Workbench;

[0032] 2. Stamping die assembly; 201. Machine platform; 202. Hydraulic cylinder; 203. Upper die plate; 204. Lower die plate;

[0033] 3. Rotating frame;

[0034] 4. Continuous film taking assembly; 401. Carrying plate; 402. Feed bar; 403. Fixed plate; 404. Separation spring plate; 405. Conveyor belt; 406. Rubber nail; 407. Arc baffle; 408. Guide groove; 409. Sliding block; 410. Motor 1; 411. Double-rotating screw; 412. Sliding seat; 413. Rotating rod; 414. Rotating hole;

[0035] 5. Bottom plate; 6. Electric push rod; 7. Discharge guide rail; 8. Transverse movement assembly; 9. Rocker arm 1; 10. Rocker arm 2; 11. Driven disk 1; 12. Driven disk 2; 13. Motor 2; 14. Active disk; 15. Friction feed roller; 16. Swing roller; 17. Jacket 2; 18. Insert column; 19. Sleeve; 20. Mounting plate; 21. Rotary screw; 22. Spring; 23. Jacket 1; 24. Guide block; 25. Geometric slide. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1:

[0038] When the stacked blanks are moved one by one into the stamping die, they cannot be separated and put into place intermittently and continuously, resulting in discontinuous or even interrupted stamping action:

[0039] Reference Figure 1 - Fig.10As shown, in this embodiment, the transformer core silicon steel sheet stamping forming die based on automatic continuous sheet taking includes a workbench 1, a stamping die assembly 2 is installed on one side of the upper end of the workbench 1, and a control panel is embedded on the outside of the workbench 1, a rotating frame 3 is hingedly connected to one side of the workbench 1 corresponding to the stamping die assembly 2, and a continuous sheet taking assembly 4 for stacking raw blanks is installed on the upper end of the rotating frame 3, and the continuous sheet taking assembly 4 includes a feed bar 402 symmetrically arranged on a carrier plate 401, and a bottom of the front side of the feed bar 402 A fixed plate 403 and a separation spring plate 404 are installed between the ends. A conveyor belt 405 corresponding to the feeding side of the stamping die assembly 2 is arranged below the feed bar 402 near the fixed plate 403. An intermittent feeding assembly is arranged along the feeding direction of the separation spring plate 404 and the conveyor belt 405 on the pair of feed bars 402. The intermittent feeding assembly includes a swing roller 16 and a friction feed roller 15 swingably connected to the feed bar 402, and the outer ring side of the swing roller 16 contacts the inner concave side of the separation spring plate 404.

[0040] Reference Figure 1 and Figure 2 As shown, the stamping die assembly 2 includes a machine table 201 and a lower template 204. A hydraulic cylinder 202 is installed at the upper end of the machine table 201. An upper template 203 vertically aligned with the lower template 204 is installed at the output end of the hydraulic cylinder 202. A mold cavity aligned with the end of the conveyor belt 405 is formed between the upper template 203 and the lower template 204, and a discharge guide rail 7 inclined toward the outside is installed on the outer side of the lower template 204. The discharge guide rail 7 is a smooth curved structure and is used for automatically discharging the transformer core silicon steel sheets after stamping.

[0041] Reference Figure 3 - Fig. 9As shown, the outer side of the rotating rod 413 is equipped with a swing rod 10 and a swing rod 19 which rotate in sequence along the feeding direction of the conveyor belt 405. The swing rod 10 and the swing rod 19 are fixedly connected to the swing roller 16 and the friction feed roller 15 through the jacket 17 and the jacket 1 23 respectively. The feed bar 402 is provided with an arc-shaped rotating hole 414 with the rotating rod 413 as the axis. One end of the swing rod 19 and the swing rod 10 passes through the rotating hole 414 and extends to the outer end, and the ends are respectively connected to the driven disk 11 and the driven disk 2 12. The feed bar 402 is equipped with a motor 2 13 in the middle between the driven disk 11 and the driven disk 2 12. The output end of the motor 2 13 is equipped with a motor 13 which is frictionally connected to the driven disk 11 and the driven disk 2 12. The active disk 14, the driven disk 1 11 and the driven disk 2 12 are connected to each other, and a geometric groove 25 is provided at the outer edge of the inner side. The geometric groove 25 is a closed groove formed by two circular grooves intersecting smoothly. The end of the swing rod 1 9 and the swing rod 2 10 extending to the outer side of the feed bar 402 is equipped with a guide block 24 that matches the geometric groove 25. When the active disk 14 rotates, the driven disk 1 11 and the driven disk 2 12 on both sides are driven to rotate, and the driven disk 1 11 and the driven disk 2 12 are respectively guided by the geometric groove 25 to the swing rod 1 9 and the swing rod 2 10 to swing back and forth, wherein the swing rod 1 9 drives the friction feed roller 15 to swing back and forth, and the swing rod 2 10 drives the swing roller 16 to swing back and forth;

[0042] Reference Figure 1 and Figure 2 As shown, a base plate 5 is installed at the bottom of the workbench 1, and an electric push rod 6 is hinged on the base plate 5, and the output end is rotatably connected to the rotating frame 3. When the electric push rod 6 is extended, it drives the rotating frame 3 to deflect counterclockwise around the hinge with the workbench 1. Conversely, when the electric push rod 6 is contracted, it drives the rotating frame 3 to deflect clockwise around the hinge with the workbench 1.

[0043] Structural principle: In the present invention, intermittent feeding action is applied to the stacked embryos, so that the stacked embryos can achieve uniform intermittent feeding in the process of continuous "page" feeding; specifically, the stacked embryos fall onto the conveyor belt 405 and are frictionally fed by the rubber nails 406, and the bottom embryos advance rapidly forward and drive the embryo body to follow up. On the one hand, the separation spring plate 404 swings back and forth under the squeezing action of the reciprocating swinging roller 16, so that the embryo body completes continuous "driving" separation under the blocking action of the separation spring plate 404, and on the other hand, the bottom embryo continues to move forward and completes uniform speed feeding under the swinging action of the reciprocating friction feed roller 15, thereby completing the feeding process of a single embryo, thereby solving the problem that the stacked embryos cannot be intermittently and continuously separated and put into position when they move one by one into the stamping die, resulting in discontinuous or even interrupted stamping action.

[0044] The control panel is built with a feeding control system, which includes a preform shape and position acquisition unit, a feeding analysis unit, a loading and unloading control unit and a stamping management unit that are communicatively connected to each other; the preform shape and position acquisition unit is used to obtain shape and position values ​​during the feeding process of stacking preforms, wherein the shape and position values ​​XW include dimension data and coordinate data, and the dimension data and coordinate data are obtained by shooting an overhead image with a camera arranged above, and the dimension data CC and coordinate data ZB are sent to the feeding analysis unit;

[0045] The feeding analysis unit receives the dimension data CC and the coordinate data ZB to perform data analysis on the feeding process of the embryo. The data analysis process is as follows: construct a calculation formula of the shape value XW XW = a × CC + b × ZB, wherein a and b are respectively preset proportional factor coefficients of the dimension data CC and the coordinate data ZB, and a>b>0, then compare the ratio of the shape value to the shape threshold value preset by the system with the standard value 1. If the ratio of the shape value to the shape threshold value preset by the system is >1, an abnormal feeding signal is generated, indicating that the current embryo size has deviated; if the ratio of the shape value to the shape threshold value preset by the system is ≤1, a normal feeding signal is generated, indicating that the current embryo size is normal;

[0046] The abnormal feeding signal and the normal feeding signal are sent to the loading and unloading control unit. When the loading and unloading control unit receives the abnormal feeding signal, the abnormal feeding signal is converted into a control signal and sent to the motor 2 13. The motor 2 13 drives the active disk 14 to rotate counterclockwise, and the active disk 14 drives the driven disk 1 11 and the driven disk 2 12 on both sides to rotate clockwise. At this time, the swing roller 16 and the friction feed roller 15 driven by the driven disk 1 11 and the driven disk 2 12 respectively swing back and forth, and the friction feed roller 15 swings back and forth to drive the separated embryos on the conveyor belt 405 to complete uniform feeding.

[0047] When defects appear on the surface of the embryo, a control signal is sent to the electric push rod 6, and the electric push rod 6 drives the continuous sheet taking assembly 4 to tilt through the rotating frame 3, so that the embryos not under the separation spring plate 404 fall off and form waste collection below;

[0048] When the loading and unloading control unit receives a normal feeding signal, it indicates that the current feeding is normal and no action is performed;

[0049] After the feeding is completed, the loading and unloading control unit sends a normal feeding signal to the stamping management unit, and the stamping management unit converts the normal feeding signal into a control signal and sends it to the hydraulic cylinder 202 and the electric push rod 6 respectively. First, the electric push rod 6 starts, and drives the supporting plate 401 to tilt through the rotating frame 3, so that the preliminary blank that has completed feeding and separated from the conveyor belt 405 moves into the mold cavity and into position, and then the hydraulic cylinder 202 starts immediately to drive the upper mold plate 203 and the lower mold plate 204 to close the mold, and form the silicon steel stamping parts of the transformer core.

[0050] Basic principle: On the one hand, this embodiment uses the separation spring plate 404 to produce reciprocating swing under the squeezing action of the reciprocating swing roller 16, so that the main body of the embryo completes continuous "driving" separation under the blocking action of the separation spring plate 404, and then the bottom embryo continues to move forward and completes uniform feeding under the swinging action of the reciprocating friction feed roller 15 to constitute the entire feeding action; on the other hand, the control system obtains the embryo feeding parameters in real time, and combines numerical calculation to complete the stamping feeding control of the embryo, so that the stamping feeding is intelligently controlled, so that the stacked embryos can be intermittently separated and accurately positioned when they move one by one into the stamping die, and the stamping process is continuous.

[0051] Embodiment 2:

[0052] This embodiment further optimizes the structure of some structures in the first embodiment;

[0053] The portion of the carrier plate 401 corresponding to the conveyor belt 405 is provided with a through groove, and the outer surface of the conveyor belt 405 is installed with evenly distributed rubber nails 406, and the upper surface of the rubber nails 406 at the top is flush with the upper surface of the carrier plate 401, and a double-screw 411 is rotatably installed at the end of the carrier plate 401 away from the stamping die assembly 2, and a motor 410 connected to the double-screw 411 is installed outside the carrier plate 401, and the sliding seats 412 connected to the feed bar 402 are respectively sleeved on the outside of the threaded parts in opposite directions on the double-screw 411, and the bottom of the feed bar 402 is installed with a slider 409 slidably connected to the guide groove 408 opened on the carrier plate 401, and arc-shaped baffles 407 are installed at both ends of the feed bar 402 close to the feeding side; the feed bar 402 with adjustable intervals is provided to realize the feeding control of preforms of different sizes, so as to facilitate multi-size feeding;

[0054] The workbench 1 is also provided with a lateral movement assembly 8 for lateral horizontal movement of the stamping die assembly 2, which includes a motor 3, a screw A, a slide rail and a slider. The motor 3 drives the screw A to rotate, so that the machine 201 is horizontally moved, and finally the interval distance with the continuous sheet taking assembly 4 is changed;

[0055] It is important to note that: in order to provide the separation spring plate 404 with different "chasing" effects when it is "impacted" by the swing roller 16;

[0056] Also added: including a plug post 18 arranged on the second jacket 17, the plug post 18 is connected to a sleeve 19, and the sleeve 19 and the swing roller 16, the plug post 18 and the upper end of the sleeve 19 are installed with mounting plates 20, a rotating screw 21 is installed between the mounting plates 20, and the rotating screw 21 is provided with a spring respectively connected to the mounting plates 20, and the relative distance between the plug post 18 and the sleeve 19 is adjusted by rotating the screw 21, so as to achieve different "driving" effects when the swing roller 16 "collides" with the separation spring plate 404, and the adaptability is high.

[0057] Embodiment three:

[0058] This embodiment combines the first embodiment and the second embodiment to form the following stamping method, including the following steps:

[0059] Step 1: The stacked blanks are placed on the carrier plate 401 by a robot with a clamp through the arc baffles 407, and the ends are in contact with the glue nails 406 on the conveyor belt 405;

[0060] Step 2: The conveyor belt 405 is started to drive the stacked pre-embryos to move, and the pre-embryos at the bottom are first advanced forward quickly and drive the main body of the pre-embryos to follow, while the reciprocating separation spring plate 404 forms a "chasing" separation effect on the stacked pre-embryos;

[0061] Step 3: After the bottom embryos all fall into the conveyor belt 405, they are fed by friction of the rubber nails 406 on the conveyor belt 405, and are fed at a uniform speed by the reciprocating friction feed rollers 15. During the feeding process, the tilt angle of the entire continuous sheet taking assembly 4 is adjusted according to the position of the die cavity in the stamping die assembly 2 to ensure accurate feeding of the embryos;

[0062] Step 4: In step 3, the friction feeding of the blank is acquired and feedback-adjusted by the control system to ensure that the blank can be intermittently separated and accurately fed when it moves one by one into the stamping die;

[0063] Step 5: After the blank is accurately fed, the conventional stamping process is completed by the stamping die assembly 2, and the automatic discharge of the formed core silicon steel sheet is completed by the discharge guide rail 7.

[0064] The above formulas are obtained by collecting a large amount of data for software simulation and selecting a formula that is close to the actual value. The coefficients in the formula are set by technical personnel in this field according to actual conditions. The above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited to this. Any technical personnel familiar with the technical field within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, make equivalent replacement or change, which should be covered within the protection scope of the present invention.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only specific implementation methods.

Claims

1. A transformer core silicon steel sheet stamping die based on automatic continuous sheet taking, comprising a workbench (1), a stamping die assembly (2) is installed on one side of the upper end of the workbench (1), and a control panel is embedded outside the workbench (1), characterized in that: A rotating frame (3) is hingedly connected to one side of the workbench (1) corresponding to the stamping die assembly (2); a continuous sheet taking assembly (4) for stacking raw blanks is installed at the upper end of the rotating frame (3); the continuous sheet taking assembly (4) comprises a feed bar (402) symmetrically arranged on a carrier plate (401); a fixing plate (403) and a separation spring plate (404) are installed between the bottom ends of the front sides of the feed bar (402); the feed bar (402) is close to the fixing plate (403) and the separation spring plate (404) is installed between the bottom ends of the front sides of the feed bar (402). A conveyor belt (405) corresponding to the feeding side of the stamping die assembly (2) is arranged below the fixed plate (403), and an intermittent feeding assembly is arranged on a pair of the feed bars (402) along the feeding direction of the separation spring plate (404) and the conveyor belt (405), wherein the intermittent feeding assembly comprises a swinging roller (16) and a friction feed roller (15) swingably connected to the feed bar (402), and the outer ring side of the swinging roller (16) contacts the inner concave side of the separation spring plate (404); The stamping die assembly (2) comprises a machine platform (201) and a lower die plate (204); a hydraulic cylinder (202) is installed at the upper end of the machine platform (201); an upper die plate (203) vertically aligned with the lower die plate (204) is installed at the output end of the hydraulic cylinder (202); a die cavity aligned with the end of a conveyor belt (405) is formed between the upper die plate (203) and the lower die plate (204).

2. The transformer core silicon steel sheet stamping die based on automatic continuous sheet taking according to claim 1 is characterized in that: The intermittent feeding assembly also includes a rotating rod (413) sequentially arranged between the feeding bars (402), and a rocker rod 2 (10) and a rocker rod 1 (9) are installed on the rotating rod (413) so as to rotate sequentially along the feeding direction of the conveyor belt (405), and the rocker rod 2 (10) and the rocker rod 1 (9) are respectively fixedly connected to the swing roller (16) and the friction feed roller (15) through the second jacket (17) and the first jacket (23).

3. The transformer core silicon steel sheet stamping forming die based on automatic continuous sheet taking according to claim 2 is characterized in that: The feed bar (402) is provided with an arc-shaped rotating hole (414) with the rotating rod (413) as the axis, one end of the swing rod 1 (9) and the swing rod 2 (10) passes through the rotating hole (414) and extends to the outer end, and is respectively connected to the driven disk 1 (11) and the driven disk 2 (12), and the feed bar (402) is equipped with a motor 2 (13) in the middle between the driven disk 1 (11) and the driven disk 2 (12), and the output end of the motor 2 (13) is equipped with a driving disk (14) frictionally connected to the driven disk 1 (11) and the driven disk 2 (12).

4. The transformer core silicon steel sheet stamping die based on automatic continuous sheet taking according to claim 3 is characterized in that: A geometric groove (25) is provided at the outer edge of the inner side of the driven disk 1 (11) and the driven disk 2 (12), and the geometric groove (25) is a closed groove formed by two circular grooves smoothly intersecting each other. A guide block (24) matching the geometric groove (25) is installed at one end of the swing rod 1 (9) and the swing rod 2 (10) extending to the outer side of the feed bar (402).

5. The transformer core silicon steel sheet stamping die based on automatic continuous sheet taking according to claim 1 is characterized in that: The portion of the carrying plate (401) corresponding to the conveyor belt (405) is provided with a through groove, and the outer surface of the conveyor belt (405) is installed with evenly spaced plastic nails (406), and the upper surface of the plastic nails (406) at the top is flush with the upper surface of the carrying plate (401).

6. The transformer core silicon steel sheet stamping die based on automatic continuous sheet taking according to claim 5 is characterized in that: A twin-screw rod (411) is rotatably mounted on one end of the carrier plate (401) away from the stamping die assembly (2), and a motor (410) connected to the twin-screw rod (411) is mounted outside the carrier plate (401).

7. The transformer core silicon steel sheet stamping forming die based on automatic continuous sheet taking according to claim 6 is characterized in that: The threaded parts in opposite directions on the double-rotation screw (411) are respectively sleeved with sliding seats (412) connected to the feed bar (402), and the bottom of the feed bar (402) is equipped with a sliding block (409) slidably connected to the guide groove (408) opened on the bearing plate (401).

8. The transformer core silicon steel sheet stamping forming die based on automatic continuous sheet taking according to claim 1, characterized in that: A base plate (5) is installed at the bottom of the workbench (1), and an electric push rod (6) is hingedly connected to the base plate (5) and its output end is rotatably connected to the rotating frame (3).

9. The transformer core silicon steel sheet stamping forming die based on automatic continuous sheet taking according to claim 1, characterized in that: The control panel is built with a feed control system, which includes a preform shape and position acquisition unit, a feed analysis unit, a loading and unloading control unit and a stamping management unit that are communicatively connected; the preform shape and position acquisition unit is used to acquire shape and position values ​​during the stacking of preform feeding, wherein the shape and position values ​​include size data and coordinate data, and the size data and coordinate data are sent to the feed analysis unit; The feeding analysis unit receives the size data and the coordinate data to perform data analysis on the feeding process of the embryo, and generates an abnormal feeding signal and a normal feeding signal, and sends the abnormal feeding signal and the normal feeding signal to the loading and unloading control unit; The loading and unloading control unit receives abnormal feeding signals and normal feeding signals to control the feeding of the embryos, and the loading and unloading control unit is used to control the opening and closing of motor 1 (410), motor 2 (13) and the electric push rod (6).

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