A self-centering fixture for stacking and pressing silicon steel sheets

Abstract

This utility model relates to the field of silicon steel sheet stacking tooling technology, specifically a self-centering tooling for stacking and pressing silicon steel sheets. It includes a mounting mechanism with a triggering mechanism inside, and a self-centering mechanism slidably connected to the mounting mechanism. The triggering mechanism includes a trigger plate, with a sleeve, a first connecting rod, and a second connecting rod fixedly connected to the top of the trigger plate. A first wedge is fixedly connected to the first connecting rod, and a second wedge is fixedly connected to the second connecting rod. The beneficial effect is that this self-centering tooling for stacking and pressing silicon steel sheets forms two concentric three-point circular positioning points when the self-centering mechanism is extended outwards. These two concentric three-point circular positioning points mutually correct each other, preventing uneven force at a certain positioning point from breaking the centering balance and affecting the centering effect. This would prevent the silicon steel sheet that breaks the centering balance from becoming skewed, thus ensuring product quality and yield.

Description

Technical Field

[0001] This utility model relates to the field of silicon steel sheet stacking tooling technology, and in particular to a self-centering tooling for stacking and pressing silicon steel sheets. Background Technology

[0002] Silicon steel sheets are a type of soft magnetic alloy made of silicon and iron with extremely low carbon content. Adding silicon increases the resistivity and maximum permeability of iron, while reducing coercivity, core loss, and magnetic aging. It is mainly used to manufacture the cores of various transformers, motors, and generators. In the stator machining of motors, silicon steel sheets need to be stacked and then welded to the upper and lower end plates. Tooling is required during the stacking process of the silicon steel sheets.

[0003] A self-centering fixture for stacking and welding silicon steel sheets for motors, disclosed in Chinese patent CN218904164U, uses a second positioning plate and two first positioning plates to self-center and position the silicon steel sheets for motors. Based on the principle of three points forming a circle, it facilitates the self-centering and positioning operation of the silicon steel sheets for motors, improves the positioning accuracy of the silicon steel sheets for motors, facilitates the stacking and welding of the silicon steel sheets for motors, facilitates the removal and unloading of the fixture, improves processing efficiency, and greatly improves product quality and pass rate.

[0004] However, compared with existing technologies and comparative solutions, it can be seen that this tooling still has the following problems in actual use:

[0005] This tooling, like some existing tooling, relies on the principle of three-point circular positioning to center the silicon steel sheets. However, since there are several stacked silicon steel sheets, if the force on one of the positioning points in the three-point circular positioning is uneven, such as if a burr in the inner hole of a silicon steel sheet gets stuck on one of the positioning points, it will break the centering balance, affecting the centering effect. This will cause the silicon steel sheet that has broken the centering balance to become skewed, thus affecting the product quality and pass rate. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a self-centering tooling for stacking and pressing silicon steel sheets.

[0007] The purpose of this utility model is achieved through the following technical solution: a self-centering tooling for stacking and pressing silicon steel sheets, including a mounting mechanism, a triggering mechanism is provided inside the mounting mechanism, and a self-centering mechanism is slidably connected to the mounting mechanism.

[0008] The triggering mechanism includes a trigger plate, and a sleeve, a first connecting rod and a second connecting rod are fixedly connected to the top of the trigger plate. A first wedge is fixedly connected to the first connecting rod and a second wedge is fixedly connected to the second connecting rod. The positions of the first wedge and the second wedge are alternately staggered. There are multiple self-centering mechanisms, which correspond to the positions of the first wedge and the second wedge respectively. A first elastic element is provided on the trigger plate.

[0009] The self-centering mechanism includes a second slide rod, one end of which is fixedly connected to a support plate, and the other end of the second slide rod away from the support plate is fixedly connected to a connecting block, on which a second elastic element is provided.

[0010] Preferably, the assembly includes a connecting tube, a storage groove on the outside of the connecting tube, a sliding groove on the top of the outside of the connecting tube, a top cover rotatably connected to the top of the connecting tube, a pressure-holding bolt threaded onto the top cover, a lower pressure plate fixedly connected to the bottom of the connecting tube, an upper pressure plate slidably connected to the connecting tube through the sliding groove, a first sliding rod fixedly connected to the bottom of the lower pressure plate, and a connecting plate fixedly connected to the inside of the connecting tube.

[0011] Preferably, the first slide rod is slidably connected inside the sleeve.

[0012] Preferably, there are multiple first connecting rods and multiple second connecting rods, and the multiple first connecting rods and multiple second connecting rods are distributed in a circumferential array on the top of the trigger plate, with the multiple first connecting rods and multiple second connecting rods being distributed alternately.

[0013] Preferably, the second slide rod is slidably connected to the connecting pipe, and the position of the support plate corresponds to the position of the storage slot.

[0014] Preferably, both the first wedge and the second wedge are adapted to the connecting block.

[0015] Preferably, the second elastic element is disposed between the connecting block and the connecting pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This self-centering fixture for stacking and pressing silicon steel sheets forms two concentric three-point circular positioning points when the self-centering mechanism extends outward. The two concentric three-point circular positioning points correct each other, preventing the centering balance from being broken when the force is uneven at a certain positioning point of the three-point circular positioning point, which would affect the centering effect and cause the silicon steel sheet that breaks the centering balance to become skewed, thus ensuring the quality and pass rate of the product.

[0018] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention in its first state;

[0021] Figure 2 This is a cross-sectional structural diagram of the first state of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the second state of the present invention;

[0023] Figure 4 This is a cross-sectional structural diagram of the second state of the present invention;

[0024] Figure 5 This is a schematic diagram of the disassembled structure of the assembly mechanism of this utility model;

[0025] Figure 6 This is a cross-sectional structural diagram of the assembly mechanism of this utility model;

[0026] Figure 7 This utility model Figure 6 Enlarged structural diagram at point A;

[0027] Figure 8 This is a cross-sectional view of the triggering mechanism of this utility model;

[0028] Figure 9 This utility model Figure 8 Enlarged structural diagram at point B;

[0029] Figure 10 This is a schematic diagram of the self-centering mechanism of this utility model.

[0030] In the diagram: 1. Assembly mechanism; 101. Connecting pipe; 102. Storage slot; 103. Slide groove; 104. Top cover; 105. Pressure holding bolt; 106. Lower pressure plate; 107. Upper pressure plate; 108. First slide rod; 109. Connecting plate; 2. Triggering mechanism; 201. Triggering plate; 202. Sleeve; 203. First connecting rod; 204. Second connecting rod; 205. First wedge; 206. Second wedge; 207. First elastic element; 3. Self-centering mechanism; 301. Second slide rod; 302. Support plate; 303. Connecting block; 304. Second elastic element. Detailed Implementation

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0033] like Figures 1 to 4 As shown, a self-centering fixture for stacking and pressing silicon steel sheets includes a mounting mechanism 1, a triggering mechanism 2 is provided inside the mounting mechanism 1, and a self-centering mechanism 3 is slidably connected to the mounting mechanism 1.

[0034] like Figures 5 to 7 As shown, the assembly mechanism 1 includes a connecting pipe 101, a storage groove 102, a sliding groove 103, a top cover 104, a pressure-holding bolt 105, a lower pressure plate 106, an upper pressure plate 107, a first sliding rod 108, and a connecting plate 109. The connecting pipe 101 has a storage groove 102 on its outside and a sliding groove 103 on its top. The top of the connecting pipe 101 is rotatably connected to the top of the connecting pipe 101, and a pressure-holding bolt 105 is threaded onto the top cover 104. The bottom of the connecting pipe 101 is fixedly connected to the lower pressure plate 106. The connecting pipe 101 is slidably connected to the upper pressure plate 107 through the sliding groove 103. The bottom of the lower pressure plate 106 is fixedly connected to the first sliding rod 108. The connecting plate 109 is fixedly connected to the inside of the connecting pipe 101.

[0035] like Figure 2 , Figure 4 , Figure 8 and Figure 9As shown, the triggering mechanism 2 includes a trigger plate 201, a sleeve 202, a first connecting rod 203, a second connecting rod 204, a first wedge 205, a second wedge 206, and a first elastic element 207. The top of the trigger plate 201 is fixedly connected to the sleeve 202, the first connecting rod 203, and the second connecting rod 204. The first sliding rod 108 is slidably connected inside the sleeve 202. There are multiple first connecting rods 203 and multiple second connecting rods 204. A circular array is distributed on the top of the trigger plate 201. Multiple first connecting rods 203 and multiple second connecting rods 204 are distributed alternately. A first wedge 205 is fixedly connected to the first connecting rod 203, and a second wedge 206 is fixedly connected to the second connecting rod 204. The positions of the first wedge 205 and the second wedge 206 are alternately staggered. There are multiple self-centering mechanisms 3, which correspond to the positions of the first wedge 205 and the second wedge 206 respectively. A first elastic element 207 is provided on the trigger plate 201.

[0036] like Figure 2 , Figure 4 and Figure 10 As shown, the self-centering mechanism 3 includes a second slide rod 301, a support plate 302, a connecting block 303, and a second elastic element 304. The second slide rod 301 is slidably connected to the connecting pipe 101. One end of the second slide rod 301 is fixedly connected to the support plate 302. The position of the support plate 302 corresponds to the position of the storage groove 102. The end of the second slide rod 301 away from the support plate 302 is fixedly connected to the connecting block 303. The first wedge 205 and the second wedge 206 are both adapted to the connecting block 303. The second elastic element 304 is provided on the connecting block 303 and is located between the connecting block 303 and the connecting pipe 101.

[0037] The work process is as follows:

[0038] S1. When in use, several silicon steel sheets are fitted onto the connecting pipe 101, and then the upper pressure plate 107 slides on the slide groove 103. Rotate the top cover 104 so that the position of the pressure holding bolt 105 corresponds to the position of the slide groove 103.

[0039] S2. Then press down the upper pressure plate 107 to press the silicon steel sheet sleeved on the connecting pipe 101, and then rotate the pressure holding bolt 105 to maintain pressure.

[0040] S3. When the upper pressure plate 107 is pressed down, the trigger plate 201 moves towards the lower pressure plate 106, the first elastic element 207 contracts, the first slide rod 108 slides into the sleeve 202, and the first connecting rod 203 and the second connecting rod 204 respectively drive the first wedge 205 and the second wedge 206 to slide in the connecting tube 101.

[0041] S4. The first wedge 205 and the second wedge 206 respectively push the corresponding connecting block 303. The connecting block 303 drives the support plate 302 to support the inner hole wall of the silicon steel sheet outward through the second slide rod 301.

[0042] S5. Since the positions of the first wedge 205 and the second wedge 206 are staggered, there are multiple self-centering mechanisms 3, which correspond to the first wedge 205 and the second wedge 206 respectively. When the self-centering mechanism 3 is pushed outward, it forms two concentric three-point circular positioning. The two concentric three-point circular positioning correct each other, avoiding the disruption of the centering balance when the force at a certain positioning point of the three-point circle is uneven, which would affect the centering effect and cause the silicon steel sheet that breaks the centering balance to become skewed, thereby ensuring the quality and pass rate of the product.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. 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 the claimed utility model.

Claims

1. A self-centering fixture for stacking and pressing silicon steel sheets, characterized in that: Includes a set mechanism (1), the set mechanism (1) is provided with a trigger mechanism (2) inside, and a self-centering mechanism (3) is slidably connected to the set mechanism (1); The triggering mechanism (2) includes a trigger plate (201). A sleeve (202), a first connecting rod (203), and a second connecting rod (204) are fixedly connected to the top of the trigger plate (201). A first wedge (205) is fixedly connected to the first connecting rod (203), and a second wedge (206) is fixedly connected to the second connecting rod (204). The positions of the first wedge (205) and the second wedge (206) are alternately staggered. There are multiple self-centering mechanisms (3), which correspond to the positions of the first wedge (205) and the second wedge (206) respectively. A first elastic element (207) is provided on the trigger plate (201). The self-centering mechanism (3) includes a second slide rod (301), one end of which is fixedly connected to a support plate (302), and the other end of the second slide rod (301) away from the support plate (302) is fixedly connected to a connecting block (303), and a second elastic element (304) is provided on the connecting block (303).

2. The self-centering fixture for stacking and pressing silicon steel sheets according to claim 1, characterized in that: The assembly mechanism (1) includes a connecting tube (101), a storage groove (102) is provided on the outside of the connecting tube (101), a sliding groove (103) is provided on the top of the connecting tube (101), a top cover (104) is rotatably connected to the top of the connecting tube (101), a pressure-holding bolt (105) is threaded on the top cover (104), a lower pressure plate (106) is fixedly connected to the bottom of the connecting tube (101), an upper pressure plate (107) is slidably connected to the connecting tube (101) through the sliding groove (103), a first sliding rod (108) is fixedly connected to the bottom of the lower pressure plate (106), and a connecting plate (109) is fixedly connected to the inside of the connecting tube (101).

3. The self-centering fixture for stacking and pressing silicon steel sheets according to claim 2, characterized in that: The first slide bar (108) is slidably connected inside the sleeve (202).

4. The self-centering fixture for stacking and pressing silicon steel sheets according to claim 1, characterized in that: There are multiple first connecting rods (203) and multiple second connecting rods (204). The multiple first connecting rods (203) and multiple second connecting rods (204) are arranged in a circumferential array on the top of the trigger plate (201). The multiple first connecting rods (203) and multiple second connecting rods (204) are arranged in an alternating pattern.

5. The self-centering fixture for stacking and pressing silicon steel sheets according to claim 2, characterized in that: The second slide bar (301) is slidably connected to the connecting pipe (101), and the position of the support plate (302) corresponds to the position of the storage groove (102).

6. The self-centering fixture for stacking and pressing silicon steel sheets according to claim 1, characterized in that: The first wedge (205) and the second wedge (206) are both adapted to the connecting block (303).

7. The self-centering fixture for stacking and pressing silicon steel sheets according to claim 2, characterized in that: The second elastic element (304) is disposed between the connecting block (303) and the connecting pipe (101).

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