Silicon steel sheet stacking type annealing tool for transformer
By designing a silicon steel sheet stacking box and a clamping frame, combined with a locking unit, the problems of low stability and stress release efficiency of the stacked structure during the annealing process of silicon steel sheets are solved, achieving stable stacking and rapid stress elimination of silicon steel sheets during the annealing process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 江苏威科变压器有限公司
- Filing Date
- 2025-05-26
- Publication Date
- 2026-04-24
AI Technical Summary
In existing technologies, the annealing process of silicon steel sheets used in transformer manufacturing can easily disrupt the laminated structure and result in low stress release efficiency.
The structure employs a silicon steel sheet stacking box and a clamping frame, combined with a locking unit, to ensure stable stacking of silicon steel sheets and timely stress relief during the annealing process.
This improved the stability and stress release efficiency of the laminated structure of silicon steel sheets during annealing, and reduced the stress relief time.
Smart Images
Figure CN224160658U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transformer manufacturing technology, and in particular to a stacked annealing fixture for silicon steel sheets used in transformers. Background Technology
[0002] A transformer is a device that uses the principle of electromagnetic induction to change alternating current voltage. Its main components are the primary coil, secondary coil, and iron core (magnetic core). In electrical equipment and wireless circuits, it is commonly used for voltage step-up / step-down, impedance matching, and safety isolation. Its main functions include voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization (magnetically saturated transformers). According to their application, they can be classified as: distribution transformers, power transformers, fully sealed transformers, combined transformers, dry-type transformers, oil-immersed transformers, single-phase transformers, electric furnace transformers, and rectifier transformers.
[0003] When processing transformer cores, silicon steel sheets need to be annealed first. However, the traditional method used in transformer manufacturing is to anneal silicon steel sheets by simply handling them manually on pallets. This method is prone to disrupting the layering of silicon steel sheets and also results in a long stress release time. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a stacked annealing fixture for silicon steel sheets used in transformers, which can solve the problems of the simple tray structure used for annealing of silicon steel sheets used in transformers, which easily disrupts the stacked structure and has low stress release efficiency.
[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a stacked annealing fixture for silicon steel sheets for transformers, the innovation of which is: it includes a silicon steel sheet stacking box, a silicon steel sheet pressing frame and a locking unit;
[0006] The silicon steel sheet stacking box has a hollow shell structure with an open top. The top of both ends of the silicon steel sheet stacking box is tilted outward to form a locking slope. Silicon steel sheets to be annealed are stacked inside the silicon steel sheet stacking box.
[0007] The silicon steel sheet clamping frame is set inside the silicon steel sheet stacking box, and the longitudinal section of the silicon steel sheet clamping frame has a U-shaped structure. The top edges of both sides of the silicon steel sheet clamping frame are inclined and turned outward to form clamping slopes, and the clamping slopes extend above the locking slopes. The lower surface of the silicon steel sheet clamping frame is used to press down the silicon steel sheets to be annealed placed inside the silicon steel sheet stacking box.
[0008] The locking unit is a pair, and the locking unit is hinged to the bottom outer wall at both ends of the silicon steel sheet stacking box. The locking unit pulls the pressing slope of the edge of the silicon steel sheet pressing frame to apply a pressing force to the silicon steel sheet, so as to ensure the stable handling of the silicon steel sheet in the silicon steel sheet stacking box and timely stress relief during annealing.
[0009] Furthermore, the locking unit includes a connecting plate, a hinged ear plate, a drive handle, a hook seat, and a locking hook; the bottom end of the connecting plate is hinged to the bottom outer wall at both ends of the silicon steel sheet stacking box.
[0010] The hinged lug has a U-shaped structure and is connected to the connecting plate by bolts;
[0011] The drive handle has a U-shaped structure and is hinged to the hinge ear plate by a hinge pin;
[0012] The hook seat is a cylindrical structure, and both ends of the hook seat are hinged to the drive handle by pins. The hook seat has a threaded through hole in the direction perpendicular to the axis.
[0013] The locking hook includes a hook section and a screw section; the hook section is connected to one end of the screw section; the hook section cooperates with the pressing bevel of the edge of the silicon steel sheet pressing frame to press the silicon steel sheet pressing frame onto the silicon steel sheet in the silicon steel sheet stacking box; the other end of the screw section cooperates with the threaded through hole on the hook seat to install the locking hook on the hook seat, and the locking hook can drive the hook seat to rotate around the drive handle.
[0014] The advantages of this utility model are:
[0015] 1) In this utility model, a dedicated silicon steel sheet stacking box is used to hold the silicon steel sheets to be annealed. This method facilitates the overall handling of the stacked silicon steel sheets and is less likely to disrupt the stacked structure. In addition, a silicon steel sheet clamping frame is set above the silicon steel sheet stacking box. On the one hand, the clamping frame is fixed by clamping the silicon steel sheet clamping frame through a locking unit. On the other hand, the silicon steel sheets in the silicon steel sheet stacking box are clamped to reduce the stress relief time during the annealing process. Furthermore, the extension length of the locking hook on the hook seat can be controlled by thread adjustment, which is convenient for use with silicon steel sheets of different stacking heights. Attached Figure Description
[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0017] Figure 1 This is a schematic diagram of the structure of a stacked annealing fixture for silicon steel sheets used in transformers according to this utility model.
[0018] Figure 2This is a side view of the locking unit of a stacked annealing fixture for silicon steel sheets used in transformers according to this utility model. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0021] like Figure 1 Figure 2 The illustrated transformer silicon steel sheet stacking annealing fixture includes a silicon steel sheet stacking box 1, a silicon steel sheet clamping frame 2, and a locking unit 3.
[0022] The silicon steel sheet stacking box 1 has a hollow shell structure with an open top. The top of both ends of the silicon steel sheet stacking box 1 is tilted outward to form a locking slope. Silicon steel sheets to be annealed are stacked inside the silicon steel sheet stacking box 1.
[0023] The silicon steel sheet clamping frame 2 is set inside the silicon steel sheet stacking box 1, and the longitudinal section of the silicon steel sheet clamping frame 2 is U-shaped. The top edges of both sides of the silicon steel sheet clamping frame 2 are tilted outward to form clamping slopes, and the clamping slopes extend above the locking slopes. The lower surface of the silicon steel sheet clamping frame 2 is used to press down the silicon steel sheet to be annealed placed in the silicon steel sheet stacking box 1.
[0024] The locking unit 3 is a pair, and the locking unit 3 is hinged to the bottom outer wall at both ends of the silicon steel sheet stacking box 1. The locking unit 3 pulls the pressing slope of the edge of the silicon steel sheet pressing frame 2, so that the silicon steel sheet pressing frame 2 applies a pressing force to the silicon steel sheet, so as to ensure the stable handling of the silicon steel sheet in the silicon steel sheet stacking box 1 and timely stress relief during annealing.
[0025] The locking unit 3 includes a connecting plate 31, a hinge ear plate 32, a drive handle 33, a hook seat 34, and a locking hook 35; the bottom end of the connecting plate 31 is hinged to the bottom outer wall at both ends of the silicon steel sheet stacking box 1.
[0026] The hinged lug 32 has a U-shaped structure and is connected to the connecting plate 31 by bolts.
[0027] The drive handle 33 has a U-shaped structure and is hinged to the hinge ear plate 32 by a hinge pin;
[0028] The hook seat 34 has a cylindrical structure, and both ends of the hook seat 34 are hinged to the drive handle 33 by pins. The hook seat 34 has a threaded through hole in the direction perpendicular to the axis.
[0029] The locking hook 35 includes a hook section 351 and a screw section 352; the hook section 351 is connected to one end of the screw section 352; the hook section 351 cooperates with the pressing bevel of the edge of the silicon steel sheet pressing frame 2 to press the silicon steel sheet pressing frame 2 onto the silicon steel sheet in the silicon steel sheet stacking box 1; the other end of the screw section 352 cooperates with the threaded through hole on the hook seat 24 to install the locking hook 35 on the hook seat 24, and the locking hook 25 can drive the hook seat 34 to rotate around the drive handle 33.
[0030] The working principle of this utility model is as follows: A dedicated silicon steel sheet stacking box is used to hold the silicon steel sheets to be annealed. This method facilitates the overall handling of the stacked silicon steel sheets and prevents disruption of the stacked structure. Furthermore, a silicon steel sheet clamping frame is installed above the stacking box. On one hand, a locking unit clamps the clamping frame to secure it; on the other hand, it clamps the silicon steel sheets inside the stacking box, thereby reducing stress relief time during the annealing process. Additionally, the extension length of the locking hook on the hook seat can be adjusted via a thread, facilitating the use of stacked silicon steel sheets of different heights.
[0031] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.
Claims
1. A stacked annealing fixture for silicon steel sheets used in transformers, characterized in that: Includes silicon steel sheet stacking box, silicon steel sheet clamping frame and locking unit; The silicon steel sheet stacking box has a hollow shell structure with an open top. The top of both ends of the silicon steel sheet stacking box is tilted outward to form a locking slope. Silicon steel sheets to be annealed are stacked inside the silicon steel sheet stacking box. The silicon steel sheet clamping frame is set inside the silicon steel sheet stacking box, and the longitudinal section of the silicon steel sheet clamping frame has a U-shaped structure. The top edges of both sides of the silicon steel sheet clamping frame are inclined and turned outward to form clamping slopes, and the clamping slopes extend above the locking slopes. The lower surface of the silicon steel sheet clamping frame is used to press down the silicon steel sheets to be annealed placed inside the silicon steel sheet stacking box. The locking unit is a pair, and the locking unit is hinged to the bottom outer wall at both ends of the silicon steel sheet stacking box. The locking unit pulls the pressing slope of the edge of the silicon steel sheet pressing frame to apply a pressing force to the silicon steel sheet, so as to ensure the stable handling of the silicon steel sheet in the silicon steel sheet stacking box and timely stress relief during annealing.
2. The stacked annealing fixture for silicon steel sheets used in transformers according to claim 1, characterized in that: The locking unit includes a connecting plate, a hinged ear plate, a drive handle, a hook seat, and a locking hook; the bottom end of the connecting plate is hinged to the bottom outer wall at both ends of the silicon steel sheet stacking box; The hinged lug has a U-shaped structure and is connected to the connecting plate by bolts; The drive handle has a U-shaped structure and is hinged to the hinge ear plate by a hinge pin; The hook seat is a cylindrical structure, and both ends of the hook seat are hinged to the drive handle by pins. The hook seat has a threaded through hole in the direction perpendicular to the axis. The locking hook includes a hook section and a screw section; the hook section is connected to one end of the screw section; the hook section cooperates with the pressing bevel of the edge of the silicon steel sheet pressing frame to press the silicon steel sheet pressing frame onto the silicon steel sheet in the silicon steel sheet stacking box; the other end of the screw section cooperates with the threaded through hole on the hook seat to install the locking hook on the hook seat, and the locking hook can drive the hook seat to rotate around the drive handle.