Ejector rod for roller stamping die

Abstract

The utility model relates to the technical field of bearing manufacturing equipment, in particular to an ejector rod for a roller stamping die, which comprises a rod body, an ejector head arranged on the upper portion of the rod body, a knocking seat arranged on the lower portion of the rod body, a transmission rod arranged in the rod body and used for connecting the ejector head and the knocking seat, and a buffer module arranged in the middle of the transmission rod. Compared with an original mode of directly pushing out the roller, the two-section type basic mode using the buffer module can reduce collision force generated when the ejector rod makes contact with the roller, so that abrasion to equipment is reduced, and meanwhile the material taking-out efficiency and the yield can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing manufacturing equipment, and particularly relates to an ejector rod for a roller stamping die. Background Technique

[0002] After the roller stamping die completes the forming operation, an ejector rod is required to eject the roller from the forming cavity of the die. The conventional ejection method is to place the ejector rod below the die cavity and use the ejector rod to push the roller out of the die cavity.

[0003] Most of the existing ejector rods are in direct contact with the material and use pressure to push the material out of the forming cavity. For example, Chinese Patent (Application No.: 202022346933.X) discloses a multi-station cold extruder for waist-shaped rollers, which includes a stamping station. The stamping station includes a die core seat and a stamping seat. The surface of the die core seat is provided with a plurality of female dies, and the inner cavity of the female die is conical. The inside of the die core seat is provided with a receiving groove, and a top plate is arranged in the receiving groove. A plurality of ejector rods extending into the inner cavity are arranged on the top plate. The ejector rod includes a base, a first rod body and a second rod body. A threaded section is arranged at the bottom of the first rod body, and a threaded hole adapted to the threaded section is arranged on the surface of the base. The first rod body and the second rod body are connected by a necking section. A plurality of vertical grooves communicating with the necking section are circumferentially arranged on the circumferential surface of the second rod body; a receiving cavity is arranged in the stamping seat, and a stamping plate is arranged in the receiving cavity. A plurality of punching rods extending out of the stamping seat and corresponding to the inner cavities one by one are arranged on the stamping plate.

[0004] Although this method can take out the material from the forming cavity, the pressurized method will cause friction on the contact surface between the ejector rod and the material, which not only affects the material taking efficiency but also risks damaging the equipment and products. Summary of the Utility Model

[0005] In order to solve the above problems, the embodiment of the utility model provides an ejector rod for a roller stamping die that can first loosen the material and then apply force to eject it, which can effectively reduce the frictional wear between the material and the ejector rod, reduce equipment wear and product damage.

[0006] The embodiment of the utility model specifically adopts the following technical solutions to achieve the above purpose: An ejector rod for a roller stamping die includes a rod body. A top head is arranged at the upper part of the rod body, and a knocking seat is arranged at the lower part. A transmission rod for connecting the top head and the knocking seat is arranged inside the rod body, and a buffer module is arranged in the middle of the transmission rod.

[0007] As a further improvement of the above technical solution:

[0008] The transmission rod includes a first ejector rod connected to the knocking seat and a second ejector rod connected to the ejecting head. A buffer spring is arranged between the first ejector rod and the second ejector rod, and a chamber for placing the buffer spring is arranged inside the rod body.

[0009] At one end of the first ejector rod and the second ejector rod located inside the chamber, a limiting platform for clamping the spring is arranged.

[0010] At one end of the second ejector rod connected to the ejecting head, a reinforcing block is arranged, and the diameter of the reinforcing block is larger than that of the second ejector rod.

[0011] One end of the knocking seat facing the rod body is provided with a sliding block, and the end of the rod body is provided with a slideway for cooperating with the sliding block.

[0012] The top of the slideway is provided with a sealing end cover, and a connecting sleeve extending into the slideway is arranged on the side wall of the sealing end cover.

[0013] The connecting sleeve is detachably connected to the slideway.

[0014] A sliding gap for the sliding block to move is reserved between the bottom of the connecting sleeve and the bottom of the slideway.

[0015] The beneficial effects of the embodiment of the present utility model are as follows: 1. The ejector rod for the roller stamping die includes a rod body, an ejecting head is arranged at the upper part of the rod body, a knocking seat is arranged at the lower part, a transmission rod for connecting the ejecting head and the knocking seat is arranged inside the rod body, and a buffer module is arranged in the middle of the transmission rod. By using the buffer module for the two-stage basic method, compared with the original method of directly ejecting the roller, the collision force when the ejector rod contacts the roller can be reduced, thereby reducing the wear of the equipment. At the same time, the efficiency and yield of material extraction can be improved.

[0016] 2. A reinforcing block is arranged at one end of the second ejector rod connected to the ejecting head, and the diameter of the reinforcing block is larger than that of the second ejector rod. An avoidance groove corresponding to the position of the reinforcing block is arranged on the side wall of the ejecting head. The reinforcing block and the avoidance groove are detachably connected by means of insertion. The function of the reinforcing block is to increase the contact area between the second ejector rod and the ejecting head, and avoid damage to the ejecting head caused by the second ejector rod due to too small contact points. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the sectional view of the present utility model;

[0019] Figure 3 is the structural schematic diagram of the sealing end cover in the present utility model.

[0020] In the figure: 1, rod body; 2, ejection head; 3, knocking seat; 4, transmission rod; 5, first ejector rod; 6, second ejector rod; 7, buffer spring; 8, chamber; 9, limiting platform; 10, strengthening block; 11, slider; 12, slideway; 13, sealing end cover; 14, connecting sleeve; 15, sliding gap. Specific implementation mode

[0021] The following is a description of the preferred implementation modes of the present invention with reference to the accompanying drawings. Those skilled in the art should understand that these implementation modes are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0022] As Figures 1 - 3 shown, the ejection rod for the roller stamping die of this embodiment includes a rod body 1. An ejection head 2 is arranged at the upper part of the rod body 1, and a knocking seat 3 is arranged at the lower part. A transmission rod 4 for connecting the ejection head 2 and the knocking seat 3 is arranged inside the rod body 1. A buffer module is arranged in the middle of the transmission rod 4. Compared with the previous method of directly transmitting the extrusion force to the ejection head 2 after hitting the knocking seat 3 and then ejecting the roller, the use of the buffer module can change the force conduction mode to the ejection head 2, and the extrusion force can be transmitted to the ejection head 2 in two steps. Before ejecting the roller, the vibration force is transmitted to it first, making it loose from the die and then ejecting it, which can reduce the vibration generated during the direct collision between the ejection rod and the roller, reduce the wear of the ejection rod, and improve the ejection efficiency at the same time.

[0023] The transmission rod 4 includes a first ejector rod 5 connected to the knocking seat 3 and a second ejector rod 6 connected to the ejection head 2. A buffer spring 7 is arranged between the first ejector rod 5 and the second ejector rod 6. A chamber 8 for placing the buffer spring 7 is arranged inside the rod body 1. After the knocking seat 3 is stressed, it first squeezes the buffer spring 7 and then contacts the second ejector rod 6, and then applies a smaller extrusion force to the ejection head 2 and transmits it to the roller to be discharged, making the roller loose from the die cavity, which is convenient for subsequent removal.

[0024] Limiting platforms 9 for clamping the spring are arranged at one ends of the first ejector rod 5 and the second ejector rod 6 located inside the chamber 8. Two ends of the buffer spring 7 are respectively connected to the two limiting platforms 9.

[0025] A strengthening block 10 is arranged at one end of the second ejector rod 6 connected to the ejection head 2. The diameter of the strengthening block 10 is larger than that of the second ejector rod 6. An avoidance groove corresponding to the position of the strengthening block 10 is arranged on the side wall of the ejection head 2. The strengthening block and the avoidance groove are detachably connected by plugging. The function of the strengthening block 10 is to increase the contact area between the second ejector rod 6 and the ejection head 2 and avoid damage to the ejection head 2 caused by the second ejector rod 6 due to too small contact points.

[0026] One end of the percussion seat 3 facing the rod body 1 is provided with a slider 11, and the end of the rod body 1 is provided with a slideway 12 for cooperating with the slider 11. The function of the slider 11 is to guide the first sliding of the first ejector rod 5 to ensure that the sliding of the first ejector rod 5 will not be skewed.

[0027] The top of the slideway 12 is provided with a sealing end cover 13. The side wall of the sealing end cover 13 is provided with a connecting sleeve 14 extending into the slideway 12. The sealing end cover 13 is provided with a through hole for passing through the first ejector rod 5. The function of the sealing end cover 13 is to seal the slideway 12 to prevent the slider 11 from falling off.

[0028] The connecting sleeve 14 and the slideway 12 are detachably connected by threads.

[0029] A sliding gap 15 for the movement of the slider 11 is reserved between the bottom of the connecting sleeve 14 and the bottom of the slideway 12. The length of the sliding gap 15 is the same as the distance between the first ejector rod 5 and the second ejector rod 6.

[0030] During use, first apply pressure to the percussion seat 3. At this time, the first ejector rod 5 moves upward, compresses the buffer spring 7 and then contacts the second ejector rod 6. After transmitting the first extrusion force to the ejecting head, when the ejecting head 2 contacts the material and applies an upward thrust to the material, a gap is generated between the roller and the side wall of the mold cavity. At this time, the slider 11 slides to the bottom of the slideway 12. As the pressure continues to increase, it will push the rod body 1 to move upward continuously and apply a second-stage pressure to the ejecting head 2 to extrude the material from the forming cavity of the mold.

[0031] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article, or apparatus / device that comprises a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to these processes, articles, or apparatus / devices.

[0034] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present utility model.

Claims

1. An ejector rod for a roller stamping die, comprising a rod body (1), an ejector head (2) being arranged at the upper part of the rod body (1), and a knocking seat (3) being arranged at the lower part, characterized in that: A transmission rod (4) for connecting the ejection head (2) and the striking seat (3) is arranged in the rod body (1), and a buffer module is arranged in the middle of the transmission rod (4).

2. The ejector rod for a roller stamping die according to claim 1, characterized in that: The transmission rod (4) comprises a first push rod (5) connected to the striking seat (3), and a second push rod (6) connected to the ejection head (2); a buffer spring (7) is arranged between the first push rod (5) and the second push rod (6); and a chamber (8) for accommodating the buffer spring (7) is arranged in the rod body (1).

3. The ejector rod for a roller stamping die according to claim 2, characterized in that: One end of the first push rod (5) and the second push rod (6) located in the chamber (8) is provided with a limit platform (9) for clamping a spring.

4. The ejector rod for a roller stamping die according to claim 2, characterized in that: One end of the second ejector rod (6) connected to the ejector head (2) is provided with a reinforcing block (10), and the diameter of the reinforcing block (10) is greater than the diameter of the second ejector rod (6).

5. The ejector rod for a roller stamping die according to claim 2, characterized in that: A slider (11) is provided at one end of the striking seat (3) facing the rod body (1), and a slideway (12) used in conjunction with the slider (11) is provided at the end of the rod body (1).

6. The ejector rod for a roller stamping die according to claim 5, characterized in that: A sealing end cover (13) is arranged on the top of the slideway (12), and a connecting sleeve (14) extending into the slideway (12) is arranged on the side wall of the sealing end cover (13).

7. The ejector rod for a roller stamping die according to claim 6, characterized in that: The connecting sleeve (14) is detachably connected to the slideway (12).

8. The ejector rod for a roller stamping die according to claim 6, characterized in that: A sliding gap (15) for the slider (11) to move is reserved between the bottom of the connecting sleeve (14) and the bottom of the slideway (12).

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