Batch grinding tool for die blanking ejector rods

Abstract

The utility model relates to a die blanking ejector rod batch grinding tool, and belongs to the technical field of dies, the die blanking ejector rod batch grinding tool comprises an upper fixing plate, a lower fixing plate opposite to the upper fixing plate and a guide column, one end of the guide column is arranged on the upper fixing plate in a penetrating mode, and the other end of the guide column is arranged on the lower fixing plate in a penetrating mode. The upper fixing plate and the lower fixing plate are provided with at least two blanking ejector rods, and the blanking ejector rods are arranged in parallel. The problem that in the grinding process, the grinding sizes and shapes of the multiple blanking ejector rods are inconsistent can be solved, batch grinding of the blanking ejector rods can be achieved, and the grinding efficiency is further improved.

Description

Technical Field

[0001] This application relates to the field of mold technology, and in particular to a batch grinding fixture for mold blanking ejector pins. Background Technology

[0002] In the manufacturing process of motor core molds, chamfering and grinding of the blanking ejector pins are usually required to ensure the riveting force of the product. The angles of these parts are generally between 30° and 45°, and multiple blanking ejector pins in a single mold often require secondary grinding. Since these parts are mostly made of cemented carbide, they are prone to breakage during grinding, leading to low production efficiency and increased costs. Existing grinding technology is mainly manual grinding. This method, which uses a manually operated grinding wheel, offers high flexibility but is labor-intensive, inconsistent, and difficult to meet the needs of mass production. Utility Model Content

[0003] To address the aforementioned issues, this application provides a batch grinding fixture for die blanking ejector pins.

[0004] The technical solution provided in this application for a batch grinding fixture for die blanking ejector pins is as follows:

[0005] A batch grinding fixture for blanking ejector pins of a mold includes an upper fixed plate, a lower fixed plate disposed opposite to the upper fixed plate, and guide pins. One end of the guide pin passes through the upper fixed plate, and the other end of the guide pin passes through the lower fixed plate. At least two blanking ejector pins are mounted on the upper fixed plate and the lower fixed plate, and the blanking ejector pins are arranged in parallel with each other.

[0006] Preferably, the material discharge ejector includes an ejector head and an ejector fixing seat. The ejector fixing seat is inserted into the lower fixing plate, and the ejector head is inserted into the upper fixing plate. The length of the ejector head extending out of the upper fixing plate is 2-3mm.

[0007] Preferably, a washer is provided between the lower fixing plate and the top rod fixing seat. The washer is sleeved on the material dropping top rod, and the side of the washer away from the top rod fixing seat abuts against the lower fixing plate.

[0008] Preferably, the lower fixing plate has a base on the side away from the upper fixing plate, and the base has a groove for positioning the lower fixing plate. The lower fixing plate and the base are detachably connected.

[0009] Preferably, the base and the guide post are fixedly connected by bolts, and the side of the base away from the lower fixed plate is provided with an oblique angle, which is set along the length direction and the angle of the oblique angle is 30°-45°.

[0010] In summary, this application includes at least one of the following beneficial technical effects:

[0011] 1. By setting up an upper fixing plate, a lower fixing plate, and guide pillars, multiple material dropping rods are kept at the same angle and fixed, and uniformly ground to achieve consistency in the grinding dimensions of the material dropping rods, thereby further improving grinding quality and efficiency;

[0012] 2. By setting the washer, the position between the material feeding rod and the lower fixed plate can be adjusted, making the extension length of the material feeding rod during grinding more flexible and improving the grinding efficiency.

[0013] 3. By connecting the base and guide post with bolts and setting the bevel angle on the base, the base with the corresponding bevel angle can be replaced for different grinding angle requirements of the material drop rod, making the grinding process more convenient and faster. Attached Figure Description

[0014] Figure 1 This is a schematic diagram illustrating the overall structure of the grinding fixture in the embodiments of this application.

[0015] Figure 2 This is a cross-sectional schematic diagram illustrating the grinding fixture in the embodiments of this application.

[0016] Explanation of reference numerals in the attached diagram: 1. Material discharge ejector pin; 2. Upper fixing plate; 3. Tooling guide post; 4. Lower fixing plate; 5. Base; 6. Magnetic platform; 7. Washer. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0018] This application discloses a batch grinding fixture for a mold blanking ejector pin 1, referring to... Figure 1 and Figure 2 It includes an upper fixing plate 2, a lower fixing plate 4 opposite to the upper fixing plate 2, and a guide post 3. The guide post 3 is located at both ends of the upper fixing plate 2 and the lower fixing plate 4. One end of the guide post 3 passes through the upper fixing plate 2, and the other end of the guide post 3 passes through the lower fixing plate 4. The guide post 3 is clearance-fitted with the upper fixing plate 2 and the lower fixing plate 4, with a single-sided clearance ≤0.005mm, which can achieve precise positioning and ensure the smooth assembly of the guide post 3.

[0019] The blanking ejector rod 1 includes an ejector rod head and an ejector rod fixing seat. The upper fixing plate 2 has multiple through holes for the ejector rod head to pass through, and the lower fixing plate 4 has multiple countersunk holes for mounting the ejector rod fixing seat. The through holes and countersunk holes are arranged in a one-to-one correspondence. A washer 7 is provided between the lower fixing plate 4 and the ejector rod fixing seat. The washer 7 is fitted onto the blanking ejector rod 1 and abuts against the lower fixing plate 4, making the extension length of the blanking ejector rod 1 more flexible during grinding and improving the overall grinding efficiency. The side of the blanking ejector rod 1 away from the washer 7 is fixed by bolts. In this embodiment, the bolt type is preferably a flat-head bolt to reduce axial movement of the blanking ejector rod 1.

[0020] At least two material discharge rods 1 are installed on the upper fixed plate 2 and the lower fixed plate 4, and the material discharge rods 1 are arranged in parallel. Each material discharge rod 1 has a clearance fit with the upper fixed plate 2 and the lower fixed plate 4, with a single-sided clearance ≤0.005mm, so that the material discharge rod 1 can be installed smoothly during assembly. The length of the rod head of the material discharge rod 1 extending out of the upper fixed plate 2 is 2-3mm, which can improve the strength of the material discharge rod 1 during grinding and reduce the possibility of breakage.

[0021] Reference Figure 1 and Figure 2 A base 5 is provided on the side of the lower fixed plate 4 away from the upper fixed plate 2. A through groove is provided on the base 5 for positioning the lower fixed plate 4 and the base 5. The lower fixed plate 4 and the base 5 are connected by bolts, and the base 5 is also fixed to the guide post 3 by bolts. An angled section is provided on the side of the base 5 away from the lower fixed plate 4, with the angle ranging from 30° to 45° along its length. This allows for the replacement of the base 5 with a corresponding angle to accommodate different grinding angle requirements of the material dropper rod 1, making the grinding process more convenient and efficient.

[0022] The implementation principle of the batch grinding fixture for the die blanking ejector pin 1 in this application embodiment is as follows:

[0023] Connect the upper fixed plate 2 and the lower fixed plate 4 together using the tooling guide post 3 and secure them with screw plugs. Then, fit the blanking ejector rod 1 with washers 7 of the same height. The ejector rod head of the blanking ejector rod 1 passes through the lower fixed plate 4 and the upper fixed plate 2 until it protrudes from the upper fixed plate 2 by about 2-3mm. Next, reverse the tooling 180° so that the lower fixed plate 4 faces upward. Gently tap the ejector rod fixing seat with a copper rod to make the blanking ejector rod 1 fit tightly against the lower fixed plate 4. Then, use screw plugs to secure the blanking ejector rod 1 so that it does not move up and down. Finally, connect the grinding tooling to the base 5 with bolts and fix it on the magnetic table 6 for grinding.

[0024] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A batch grinding fixture for die blanking ejector pins, characterized in that, It includes an upper fixing plate (2), a lower fixing plate (4) disposed opposite to the upper fixing plate (2), and a guide post (3). One end of the guide post (3) passes through the upper fixing plate (2), and the other end of the guide post (3) passes through the lower fixing plate (4). At least two material dropping rods (1) are installed on the upper fixing plate (2) and the lower fixing plate (4), and the material dropping rods (1) are arranged in parallel.

2. The batch grinding fixture for die blanking ejector pins according to claim 1, characterized in that: The material discharge top rod (1) includes a top rod head and a top rod fixing seat. The top rod fixing seat is inserted into the lower fixing plate (4), and the top rod head is inserted into the upper fixing plate (2). The length of the top rod head extending out of the upper fixing plate (2) is 2-3mm.

3. The batch grinding fixture for die blanking ejector pins according to claim 2, characterized in that: A washer (7) is provided between the lower fixing plate (4) and the top rod fixing seat. The washer (7) is sleeved on the material dropping top rod (1). The side of the washer (7) away from the top rod fixing seat abuts against the lower fixing plate (4).

4. The batch grinding fixture for die blanking ejector pins according to claim 1, characterized in that: The lower fixing plate (4) has a base (5) on the side away from the upper fixing plate (2). The base (5) has a groove for positioning the lower fixing plate (4). The lower fixing plate (4) and the base (5) are detachably connected.

5. The batch grinding fixture for die blanking ejector pins according to claim 4, characterized in that: The base (5) and the guide post (3) are fixed by bolts. The base (5) has an oblique angle on the side away from the lower fixing plate (4). The oblique angle is set along the length direction and the angle of the oblique angle is 30°-45°.

Images