Device for bonding stator iron core silicon steel sheets in mold

Abstract

The utility model discloses a device for bonding a stator iron core silicon steel sheet in a die, which belongs to the technical field of stator iron core processing and comprises a lower die plate (1), a lower die holder (2), a glue dripping fixing plate (4), a glue dripping base (5), a glue dripping head (6) and a demoulding mechanism (7), a lower die cavity (3) is arranged on the lower die holder (2), the glue dripping base (5) is arranged in the lower die cavity (3), one end of the glue dripping head (6) is fixedly arranged on the glue dripping base (5), and the other end of the glue dripping head (6) is fixedly arranged on the demoulding mechanism (7). One end of the glue dripping head (6) is arranged on the glue dripping base (5), the other end of the glue dripping head (6) is arranged in the fixing hole (8), an elastic mechanism (9) is arranged between the glue dripping base (5) and the glue dripping fixing plate (4), the demolding mechanism (7) is arranged below the glue dripping base (5), and the demolding mechanism (7) comprises an ejection end (11). And the original welding or riveting is changed into colloid bonding, so that the product quality is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of stator core processing equipment, and relates to a device for bonding silicon steel sheets of stator cores, specifically a device for bonding silicon steel sheets of stator cores in-mold. Background Technology

[0002] The stator core is a basic structure of an electric motor. Its manufacturing process mainly involves stamping and stacking silicon steel sheets and then fixing them. Currently, the stamping of silicon steel sheets often uses a progressive die processing method. The progressive die includes an upper die and a lower die. The lower die has a lower template and a lower die cavity. The stamped and stacked silicon steel sheets are usually fixed by riveting or welding. However, when using welding, the heat generated during the welding process can damage the integrity of the silicon steel sheets and also affect the size of the stator core. Although the riveting method is simple to process, the riveted parts may loosen during long-term use of the motor, which will affect the overall performance of the stator core.

[0003] In the prior art, utility model patent with patent number 202422026487.2 discloses a spliced ​​stator core and motor. In this spliced ​​stator core, the stator segment includes two arc-shaped pieces with different circumferential lengths, which respectively form the stator segment body and the protrusion, so that the two stator segments can be interlocked, ensuring the structural strength of the stator core. This eliminates the need to form mortise and tenon structures on the arc-shaped pieces through a stamping process, thus ensuring the yield rate of the arc-shaped pieces.

[0004] This technical solution enhances the strength of the stator core by changing the positive sheet structure of the silicon steel sheets. However, the connection between the silicon steel sheets is still made by welding, which still leads to inaccurate stator core dimensions due to welding, affecting product quality. Utility Model Content

[0005] The purpose of this invention is to overcome the technical problems of welding connections used in the existing stator core silicon steel sheets, which result in low precision and affect product quality. This invention provides a device for in-mold bonding of stator core silicon steel sheets.

[0006] To solve the above-mentioned technical problems, this utility model provides a device for in-mold bonding of stator core silicon steel sheets, including a lower template and a lower mold base. The lower mold base is provided with a lower mold cavity. The device also includes a glue-drip fixing plate, a glue-drip base, a glue-drip head, and a demolding mechanism. The upper surface of the glue-drip fixing plate is parallel to the upper surface of the lower template. The glue-drip base is disposed in the lower mold cavity. One end of the glue-drip head is fixedly disposed on the glue-drip base. The glue-drip fixing plate is provided with a fixing hole, and the other end of the glue-drip head is disposed in the fixing hole. An elastic mechanism is provided between the glue-drip base and the glue-drip fixing plate. The demolding mechanism is disposed below the glue-drip base. The glue-drip base and the glue-drip fixing plate are provided with an ejection cavity. The demolding mechanism includes an ejection end disposed in the ejection cavity.

[0007] During progressive die processing, the raw material of silicon steel sheet is placed on the upper surface of the lower die plate and the adhesive fixing plate. The upper die presses downward and contacts the lower die plate and the adhesive fixing plate. Under force, the adhesive fixing plate is pressed down, pressing down the adhesive head to extrude the adhesive. Because there is an elastic mechanism between the adhesive fixing plate and the adhesive base, the adhesive fixing plate returns to its original position after the upper die is lifted. The lower surface of the stamped silicon steel sheet has been coated with adhesive. At this time, the ejector end of the demolding mechanism ejects the silicon steel sheet, separating the silicon steel sheet from the lower die plate and the adhesive fixing plate, and enters the stacking process. Because the adhesive on the lower surface of the silicon steel sheet allows the silicon steel sheets to adhere together, it avoids product defects caused by welding, riveting and other processes, and improves product quality.

[0008] As a further improvement of this utility model, the above-mentioned device for in-mold bonding of stator core silicon steel sheets includes an elastic mechanism comprising a spring and a connecting bolt. One end of the spring is fixedly mounted on the epoxy resin base, and the other end is mounted on the lower surface of the epoxy resin fixing plate. The epoxy resin base is provided with a T-shaped hole, the head of the connecting bolt is mounted in the T-shaped hole, and the tail of the connecting bolt passes through the T-shaped hole and is threadedly connected to the epoxy resin base.

[0009] As a further improvement of this utility model, the above-mentioned device for in-mold bonding of stator core silicon steel sheets has an equal-height sleeve on the connecting bolt. One end of the equal-height sleeve is inserted into the T-shaped hole, and the other end is placed on the lower surface of the drip adhesive fixing plate.

[0010] As a further improvement of this utility model, the above-mentioned device for bonding stator core silicon steel sheets in an in-mold includes a demolding mechanism that further includes a cylinder and a demolding rod. The ejector end is the demolding rod. The cylinder is disposed on the lower surface of the adhesive base. The cylinder rod is connected to the demolding rod. The adhesive base is provided with a through hole one, and the adhesive fixing plate is provided with a through hole two. The through hole one and the through hole two together form an ejection cavity.

[0011] As a further improvement of this utility model, the above-mentioned device for in-mold bonding of stator core silicon steel sheets includes a first adhesive fixing plate and a second adhesive fixing plate. The first adhesive fixing plate is disposed on the second adhesive fixing plate, and a groove is provided on the upper surface of the adhesive base. The adhesive fixing plate is disposed in the groove.

[0012] As a further improvement of this utility model, the above-mentioned device for bonding stator core silicon steel sheets in an in-mold includes a dripping pad in the lower mold cavity, and a dripping base is disposed on the dripping pad.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By setting an in-mold bonding device for stator core silicon steel sheets, the lower surface of the silicon steel sheets is coated with colloid during the stamping process, changing the original welding or riveting connection method to colloid bonding, thus improving product quality. 2. At the same time, the device is set inside the stamping die, eliminating the need for additional processes, and the colloid coating is completed during the stamping process, improving production efficiency. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural schematic diagram of a device for in-mold bonding of silicon steel sheets for stator cores according to this utility model.

[0015] The reference numerals in the attached diagrams are as follows: 1. Lower mold plate; 2. Lower mold base; 3. Lower mold cavity; 4. Glue fixing plate; 5. Glue base; 6. Glue head; 7. Demolding mechanism; 8. Fixing hole; 9. Elastic mechanism; 10. Ejection cavity; 11. Ejection end; 12. Spring; 13. Connecting bolt; 14. T-hole; 15. Equal height sleeve; 16. Cylinder; 17. Demolding rod; 18. Through hole one; 19. Through hole two; 20. Glue pad; 21. Glue fixing plate one; 22. Glue fixing plate two; 23. Groove one. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] Conversely, this utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model as defined in the claims. Furthermore, to provide the public with a better understanding of this utility model, certain specific details are described in detail in the following description. However, those skilled in the art will fully understand this utility model even without these detailed descriptions.

[0018] like Figure 1The apparatus shown is for in-mold bonding of stator core silicon steel sheets, including a lower mold plate 1 and a lower mold base 2. The lower mold base 2 is provided with a lower mold cavity 3. The apparatus also includes a glue-fixing plate 4, a glue-fixing base 5, a glue-fixing head 6, and a demolding mechanism 7. The upper surface of the glue-fixing plate 4 is parallel to the upper surface of the lower mold plate 1. The glue-fixing base 5 is disposed in the lower mold cavity 3. A glue-fixing pad 20 is disposed in the lower mold cavity 3. The glue-fixing base 5 is disposed on the glue-fixing pad 20. One end of the glue-fixing head 6 is fixedly disposed on the glue-fixing base 5. The glue-fixing plate 4 is provided with a fixing hole 8. The other end of the glue-fixing head 6 is disposed in the fixing hole 8. The glue-fixing plate 4 includes a first glue-fixing plate 21 and a second glue-fixing plate 22. The first glue-fixing plate 21 is disposed on the second glue-fixing plate 22. The upper surface of the glue-fixing base 5 is provided with a first groove 23. The glue-fixing plate 4 is disposed in the first groove 23.

[0019] like Figure 1 An elastic mechanism 9 is provided between the epoxy resin base 5 and the epoxy resin fixing plate 4. The elastic mechanism 9 includes a spring 12 and a connecting bolt 13. One end of the spring 12 is fixedly mounted on the epoxy resin base 5, and the other end is mounted on the lower surface of the epoxy resin fixing plate 4. A T-shaped hole 14 is provided on the epoxy resin base 5. The head of the connecting bolt 13 is located in the T-shaped hole 14, and the tail of the connecting bolt 13 passes through the T-shaped hole 14 and is threadedly connected to the epoxy resin base 5. An equal-height sleeve 15 is provided on the connecting bolt 13. One end of the equal-height sleeve 15 is locked in the T-shaped hole 14, and the other end is mounted on the lower surface of the epoxy resin fixing plate 4.

[0020] like Figure 1 The demolding mechanism 7 shown is located below the epoxy resin base 5. The demolding mechanism 7 also includes a cylinder 16 and a demolding rod 17. The ejector end 11 is the demolding rod 17. The cylinder 16 is located on the lower surface of the epoxy resin base 5. The cylinder 16 rod is connected to the demolding rod 17. The epoxy resin base 5 is provided with a through hole 18, and the epoxy resin fixing plate 4 is provided with a through hole 2 19. The through hole 18 and the through hole 2 19 together form the ejection cavity 10. The ejector end 11 is located in the ejection cavity 10.

[0021] During the progressive die processing, the raw material of silicon steel sheet is placed on the upper surface of the lower mold plate 1 and the dripping fixing plate 4. The upper mold presses downward and contacts the lower mold plate 1 and the dripping fixing plate 4. After being subjected to force, the dripping fixing plate 4 is pressed down, pressing down the dripping head 6 to expel the glue. Since the dripping fixing plate 4 and the dripping base 5 are provided with an elastic mechanism 9, the dripping fixing plate 4 returns to its original position after the upper mold is lifted. The lower surface of the stamped silicon steel sheet has been coated with glue. At this time, the ejector end 11 of the demolding mechanism 7 ejects the silicon steel sheet, separating the silicon steel sheet from the lower mold plate 1 and the dripping fixing plate 4, and enters the stacking process. Since the glue on the lower surface of the silicon steel sheet enables the silicon steel sheets to stick together, it avoids product defects caused by welding, riveting and other processes, and improves product quality.

[0022] By setting up an in-mold bonding device for silicon steel sheets of stator cores, an adhesive coating is applied to the lower surface of the silicon steel sheets during the stamping process. This changes the original welding or riveting connection methods to adhesive bonding, improving product quality. At the same time, since the device is set inside the stamping die, no additional process is required, and the adhesive coating is completed during the stamping process, improving production efficiency.

[0023] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the present utility model, and these should also be considered to fall within the protection scope of the present utility model.

Claims

1. A device for in-mold bonding of silicon steel sheets for stator cores, comprising a lower mold plate (1) and a lower mold base (2), wherein a lower mold cavity (3) is provided on the lower mold base (2), characterized in that, The device further includes a glue-fixing plate (4), a glue-fixing base (5), a glue-fixing head (6), and a demolding mechanism (7). The upper surface of the glue-fixing plate (4) is parallel to the upper surface of the lower mold plate (1). The glue-fixing base (5) is located in the lower mold cavity (3). One end of the glue-fixing head (6) is fixedly located on the glue-fixing base (5). The glue-fixing plate (4) is provided with a fixing hole (8). The other end of the glue-fixing head (6) is located in the fixing hole (8). An elastic mechanism (9) is provided between the glue-fixing base (5) and the glue-fixing plate (4). The demolding mechanism (7) is located below the glue-fixing base (5). The glue-fixing base (5) and the glue-fixing plate (4) are provided with an ejection cavity (10). The demolding mechanism (7) includes an ejection end (11), which is located in the ejection cavity (10).

2. The device for in-mold bonding of stator core silicon steel sheets according to claim 1, characterized in that: The elastic mechanism (9) includes a spring (12) and a connecting bolt (13). One end of the spring (12) is fixed on the epoxy resin base (5), and the other end is set on the lower surface of the epoxy resin fixing plate (4). The epoxy resin base (5) is provided with a T-shaped hole (14). The head of the connecting bolt (13) is set in the T-shaped hole (14), and the tail of the connecting bolt (13) passes through the T-shaped hole (14) and is threadedly connected to the epoxy resin base (5).

3. The device for in-mold bonding of stator core silicon steel sheets according to claim 2, characterized in that: The connecting bolt (13) is provided with an equal height sleeve (15), one end of which is inserted into the T-shaped hole (14), and the other end is placed on the lower surface of the drip fixation plate (4).

4. The device for in-mold bonding of stator core silicon steel sheets according to claim 3, characterized in that: The demolding mechanism (7) also includes a cylinder (16) and a demolding rod (17). The ejector end (11) is the demolding rod (17). The cylinder (16) is set on the lower surface of the drip base (5). The cylinder (16) rod of the cylinder (16) is connected to the demolding rod (17). The drip base (5) is provided with a through hole one (18), and the drip fixing plate (4) is provided with a through hole two (19). The through hole one (18) and the through hole two (19) together form the ejection cavity (10).

5. The apparatus for in-mold bonding of silicon steel sheets for stator cores according to claim 4, characterized in that: The epoxy resin fixing plate (4) includes epoxy resin fixing plate one (21) and epoxy resin fixing plate two (22). Epoxy resin fixing plate one (21) is set on epoxy resin fixing plate two (22). The upper surface of the epoxy resin base (5) is provided with groove one (23), and epoxy resin fixing plate (4) is set in groove one (23).

6. The apparatus for in-mold bonding of stator core silicon steel sheets according to any one of claims 1-5, characterized in that: A dripping pad (20) is provided inside the lower mold cavity (3), and a dripping base (5) is provided on the dripping pad (20).

Images