Stamping die for shearing silicon steel sheet of transformer iron core
By designing the technical means of self -grinding blocks in the stamping mold, the cutting of silicon steel sheets caused by the phenomenon of rolling edge of the heading head is not sharp, and the automatic polishing and production efficiency of the jumping head are not sharp.
Patent Information
- Application Number
- CN202421078095.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-17
AI Technical Summary
In the prior art, after long-term use or improper operation, the edges are prone to rolling, resulting in the silicon steel sheet being not sheared sharply and difficult to polish, which affects production efficiency.
Design a transformer iron core silicon steel shear and processing mounting mold. Set up a second activity slot around the head. The guide rod and the polished block are connected through the activity to achieve the sidelines of the self -hearing of the grinding block.
Through the design of the self -grinding block, when the rolling blade phenomenon can appear on the edge of the head, it can automatically polish, maintain the sharp state of the jumping head, improve production efficiency, and solve the problem of insufficient polishing capabilities in existing technologies.
Smart Images
Figure CN222403011U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of stamping dies, in particular to a stamping die for shearing silicon steel sheets of transformer cores. Background Art
[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. It is mainly composed of parts such as a primary coil, a secondary coil and an iron core. The iron core is generally made of silicon steel sheets. Silicon steel sheets have high magnetic permeability and certain punching and shearing properties. The surface insulation film has good adhesion and weldability, can prevent corrosion and improve punching properties, and are usually produced by stamping.
[0003] Although the existing technology solves the problem of producing transformer cores by punching and shearing silicon steel sheets after they enter the stamping die, the edge of the punch will be curled and no longer sharp after long-term use or due to improper operation by the operator, and the punch needs to be removed and polished, which not only makes the produced silicon steel sheets fail to meet the standards, but also affects the production process, reducing production efficiency, and does not have the ability to polish the punch.
[0004] Therefore, a stamping die for shearing silicon steel sheets of transformer core is specially proposed. Summary of the invention
[0005] The purpose of the utility model is to provide a stamping die for shearing transformer core silicon steel sheets, which can make the grinding block autonomously grind the edge of the punch when the edge of the punch is curled due to long-term use or improper operation by the operator, so as to carry out processing and production more safely and efficiently, so as to solve the problems raised in the above-mentioned background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stamping die for shearing silicon steel sheets of transformer core, comprising a base, a punching module fixedly connected to the middle of the upper end of the base, a discharge port opened in the middle of the base, guide pillars fixedly connected to the four corners of the upper end of the base, a guide sleeve movably connected to the outside of the guide pillar, an upper die seat fixedly connected to the upper surface of the guide sleeve, a connecting plate fixedly connected to the middle of the lower end of the upper die seat, and a punch fixedly connected to the middle of the lower end of the connecting plate;
[0007] Second movable grooves are provided around the punch, and guide rods are movably connected inside the second movable grooves, and a grinding block is movably connected to the lower end surface of the guide rod.
[0008] Preferably, the lower end of the connecting plate is fixedly connected to a punch fixing plate, a fixing column is movably connected between the connecting plate and the punch fixing plate, the fixing column is located at the upper corner of the punch fixing plate, and the outside of the fixing column is movably connected to a spring.
[0009] Preferably, a movable opening is provided in the middle of the punch fixing plate, and a first movable groove is provided inside the punch fixing plate.
[0010] Preferably, racks are fixedly connected to both front and rear ends of the lower end of the connecting plate, and the racks penetrate the punch fixing plate, the punch module and the base respectively.
[0011] Preferably, a material return port is provided in the middle of the punching module, cavities are provided at both the front and rear ends of the interior of the punching module, and a striking component is provided inside the cavity.
[0012] Preferably, the striking assembly includes a fixing frame fixedly connected to the lower end of the cavity, the upper end of the fixing frame is movably connected to a connecting rod, a torsion spring is movably connected between the connecting rod and the fixing frame, the rear end of the connecting rod is movably connected to a movable rod, and the front end of the connecting rod is fixedly connected to a hammer head.
[0013] Preferably, the movable rod swings in one direction, the rack contacts and cooperates with the movable rod in the cavity, and the elastic force of the torsion spring is greater than the gravity of the hammer head.
[0014] Preferably, the grinding block can be disassembled and replaced, and the elastic force of the spring is greater than the sum of the gravity exerted on the punch fixing plate, the connecting plate and the punch.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] 1. By installing the grinding block, guide rod and second movable groove and other components, when the edge of the punch is curled, the grinding block can grind the edge of the punch autonomously to ensure that the punch can always be sharp for production work;
[0017] 2. By installing the rack, knocking the components and opening the back cutter groove, when producing silicon steel sheets of limited specifications, the silicon steel sheets will be stuck in the back cutter groove. Vibration is generated by knocking, so that the silicon steel sheets can be dropped through the back cutter groove normally. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is the overall structural view of the utility model;
[0020] Figure 2 This is a schematic diagram of the bottom structure of the utility model;
[0021] Figure 3 It is a schematic diagram of a half-section structure of the utility model;
[0022] Figure 4 For the utility model Figure 3 A is an enlarged view of the middle image.
[0023] Description of reference numerals:
[0024] 1. Base; 11. Guide column; 12. Discharge port; 2. Upper die seat; 21. Guide sleeve; 3. Punch module; 31. Return port; 4. Punch fixing plate; 41. Movable port; 42. First movable groove; 43. Fixed column; 44. Spring; 45. Cavity; 5. Connecting plate; 51. Rack; 6. Punch; 61. Second movable groove; 62. Guide rod; 63. Grinding block; 7. Striking assembly; 71. Fixed frame; 72. Connecting rod; 73. Movable rod; 74. Hammer; 75. Torsion spring. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] See also Figures 1 to 4 , the utility model provides a technical solution:
[0027] A stamping die for shearing silicon steel sheets of transformer core, comprising a base 1, a punching module 3 is fixedly connected to the middle of the upper end of the base 1, a discharge port 12 is provided in the middle of the base 1, a guide column 11 is fixedly connected to the upper end of the base 1 near the four corners, a guide sleeve 21 is movably connected to the outside of the guide column 11, an upper die seat 2 is fixedly connected to the upper surface of the guide sleeve 21, a connecting plate 5 is fixedly connected to the middle of the lower end of the upper die seat 2, a punch 6 is fixedly connected to the middle of the lower end of the connecting plate 5, a second movable groove 61 is provided around the punch 6, and the second movable groove 61 The interior of each of the plates is movably connected with a guide rod 62, the lower end surface of the guide rod 62 is movably connected with a grinding block 63, the lower end of the connecting plate 5 is fixedly connected with a punch fixing plate 4, a fixing column 43 is movably connected between the connecting plate 5 and the punch fixing plate 4, the fixing column 43 is located at the upper end corner of the punch fixing plate 4, the outside of the fixing column 43 is movably connected with a spring 44, a movable opening 41 is provided in the middle of the punch fixing plate 4, a first movable groove 42 is provided inside the punch fixing plate 4, and the elastic force of the spring 44 is greater than the sum of the gravity acting on the punch fixing plate 4, the connecting plate 5 and the punch 6.
[0028] By adopting the above technical solution, during processing, when the silicon steel sheet reaches the position between the punch module 3 and the punch fixed plate 4, the upper die seat 2 is pressed down, and the guide sleeve 21 moves downward along the direction of the guide column 11. The upper die seat 2 moves downward with the connecting plate 5, and the connecting plate 5 moves downward along the fixed column 43 and compresses the fixed column 43. The connecting plate 5 moves downward with the punch 6 through the movable port 41, and the punch 6 presses the silicon steel sheet to move downward. The silicon steel sheet will be punched down along the shape of the return port 31. At this time, the punched silicon steel sheet will drop in the vertical direction of the movable port 41, and then be discharged through the discharge port 12. After the discharge, the compressed fixed column 43 will return to its original state and move upward with the punch 6. The punch 6 moves upward with the connecting plate 5 and the upper die seat 2, so that the entire punching The die returns to its initial state, completing a stamping process. The silicon steel sheet is then moved forward so that the remaining space of the silicon steel sheet remains at the material return port 31, and the cycle is repeated to achieve the function of cyclic stamping. When the punch 6 is used for a long time or due to improper operation by the operator, the edge of the punch 6 may curl. At this time, the punch 6 moves downward, and the guide rod 62 around the punch 6 moves along the direction of the second movable groove 61. When the punch 6 moves upward, the guide rod 62 moves downward along the direction of the second movable groove 61, and the guide rod 62 returns to the initial state with the grinding block 63. The reciprocating cycle causes each grinding block 63 to translate along the direction of its respective first movable groove 42, and the grinding block 63 moves back and forth to achieve the function of grinding the punch 6.
[0029] Specifically, Figure 4As shown, racks 51 are fixedly connected to the front and rear ends of the lower end of the connecting plate 5, and the racks 51 respectively penetrate the punch fixing plate 4, the punch module 3 and the base 1. A material withdrawal port 31 is provided in the middle of the punch module 3, and cavities 45 are provided at the front and rear ends of the interior of the punch module 3. A knocking assembly 7 is arranged inside the cavity 45, and the knocking assembly 7 includes a fixing frame 71 fixedly connected to the lower end of the cavity 45, and a connecting rod 72 is movably connected to the upper end of the fixing frame 71, and a torsion spring 75 is movably connected between the connecting rod 72 and the fixing frame 71, and a movable rod 73 is movably connected to the rear end of the connecting rod 72, and a hammer 74 is fixedly connected to the front end of the connecting rod 72, and the movable rod 73 is unidirectionally swinging, and the rack 51 contacts and cooperates with the movable rod 73 in the cavity 45, and the elastic force of the torsion spring 75 is greater than the gravity of the hammer 74.
[0030] By adopting the above technical scheme, when the stamped silicon steel sheet descends through the return port 31 and passes through the movable port 41, because the stamped silicon steel sheet is of irregular specifications, it may get stuck in the movable port 41 due to inclination during the fall, and at this time the connecting plate 5 descends, and the connecting plate 5 descends with the rack 51 at the lower end of the connecting plate 5, and the rack 51 descends and passes through the punch fixing plate 4, the punch module 3 and the base 1. When the rack 51 passes through the cavity 45, a single tooth on the rack 51 moves the movable rod 73 downward, and the movable rod 73 moves upward with the torsion spring 75 at the upper end of the fixed frame 71, and the torsion spring 75 moves the hammer head 74 upward. After passing a single tooth, the movable rod 73 enters the tooth groove of the second tooth, and the torsion spring 75 presses the connecting rod 72 to move backward, and the connecting rod 72 moves backward. The connecting rod 72 moves backward with the hammer head 74, so that the hammer head 74 knocks on the inside of the punch module 3, and the rack 51 moves downward continuously to achieve the effect of continuous knocking. The knocking generates vibration, and the stuck silicon steel sheet will fall under the continuous vibration. After the stamping is completed, when the upper die seat 2, the punch fixing plate 4, and the connecting plate 5 move upward, the connecting plate 5 moves upward with the rack 51, and the connecting rod 72 can only swing in one direction. When the rack 51 rises, the teeth on the rack 51 continuously slide over the movable rod 73. When the rack 51 returns to its original state, it is convenient for recycling. Under the reciprocating motion of the rack 51, the hammer head 74 cyclically knocks on the inside of the punch module 3, so as to achieve the vibration generated by knocking, so that the silicon steel sheet can normally pass through the back cutter groove and fall.
[0031] Working principle: When the edge of the punch 6 curls due to long-term use or improper operation by the operator, the punch 6 moves downward, and the guide rods 62 around the punch 6 move along the direction of the second movable groove 61. When the punch 6 moves upward, the guide rods 62 move downward along the direction of the second movable groove 61, and the guide rods 62 bring the grinding blocks 63 back to the original state. The reciprocating cycle causes each grinding block 63 to translate along the direction of its respective first movable groove 42. The back-and-forth movement of the grinding blocks 63 can achieve the effect of grinding the punch 6.
[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A stamping die for shearing silicon steel sheets of transformer core, comprising a base (1), characterized in that: A punch module (3) is fixedly connected to the middle of the upper end of the base (1), a discharge port (12) is provided in the middle of the base (1), a guide column (11) is fixedly connected to the upper end of the base (1) near the four corners, a guide sleeve (21) is movably connected to the outside of the guide column (11), an upper die seat (2) is fixedly connected to the upper surface of the guide sleeve (21), a connecting plate (5) is fixedly connected to the middle of the lower end of the upper die seat (2), and a punch (6) is fixedly connected to the middle of the lower end of the connecting plate (5); The punch (6) is provided with a second movable groove (61) around its periphery, the interior of the second movable groove (61) is movably connected to a guide rod (62), and the lower end surface of the guide rod (62) is movably connected to a grinding block (63).
2. A stamping die for shearing transformer core silicon steel sheets according to claim 1, characterized in that: The lower end of the connecting plate (5) is fixedly connected to a punch fixing plate (4), and a fixing column (43) is movably connected between the connecting plate (5) and the punch fixing plate (4). The fixing column (43) is located at the upper corner of the punch fixing plate (4), and the outside of the fixing column (43) is movably connected to a spring (44).
3. A stamping die for shearing transformer core silicon steel sheets according to claim 2, characterized in that: A movable opening (41) is provided in the middle of the punch fixing plate (4), and a first movable groove (42) is provided inside the punch fixing plate (4).
4. The punching die for shearing silicon steel sheets of transformer core according to claim 1, characterized in that: The front and rear ends of the lower end of the connecting plate (5) are fixedly connected with racks (51), and the racks (51) respectively penetrate the punch fixing plate (4), the punch module (3) and the base (1).
5. A stamping die for shearing transformer core silicon steel sheets according to claim 4, characterized in that: A material return port (31) is provided in the middle of the punching module (3), cavities (45) are provided at both the front and rear ends of the punching module (3), and a striking component (7) is provided inside the cavity (45).
6. The punching die for shearing silicon steel sheets of transformer core according to claim 5, characterized in that: The striking assembly (7) comprises a fixing frame (71) fixedly connected to the lower end of the cavity (45); the upper end of the fixing frame (71) is movably connected to a connecting rod (72); a torsion spring (75) is movably connected between the connecting rod (72) and the fixing frame (71); the rear end of the connecting rod (72) is movably connected to a movable rod (73); and the front end of the connecting rod (72) is fixedly connected to a hammer head (74).
7. The punching die for shearing transformer core silicon steel sheets according to claim 6, characterized in that: The movable rod (73) swings in one direction, the rack (51) contacts and cooperates with the movable rod (73) in the cavity (45), and the elastic force of the torsion spring (75) is greater than the weight of the hammer head (74).
8. The punching die for shearing transformer core silicon steel sheets according to claim 2, characterized in that: The elastic force of the spring (44) is greater than the sum of the gravity exerted on the punch fixing plate (4), the connecting plate (5) and the punch (6).