Automobile piston rod groove rolling device

Abstract

The utility model discloses a kind of automobile piston rod roll groove devices, specifically related to automobile piston rod processing technical field, including cabinet, the operating table is arranged in the top of cabinet, the roller group is arranged on operating table, the roller group has driving roller, first limiting roller and second limiting roller, driving roller and second limiting roller are arranged side by side, first limiting roller is provided with two, and two first limiting rollers are respectively arranged above driving roller and second limiting roller, by driving first limiting roller up and down movement can be clamped between driving roller, first limiting roller and second limiting roller piston rod. The utility model is clamped in middle by using diameter consistent driving roller, first limiting roller and second limiting roller to the piston rod to be rolled groove, on the one hand, it can realize the quick clamping of piston rod, on the other hand, it can also increase the clamping part of piston rod, avoid the phenomenon of stress concentration.

Description

Technical Field

[0001] This utility model relates to the field of automotive piston rod processing technology, specifically to an automotive piston rod grooving device. Background Technology

[0002] Grooving devices are primarily used in the machining of grooves at the ends of piston rods. A grooving device is a specialized piece of equipment for precision forming of high-strength, high-precision rod-shaped parts. Through a cold rolling process, it machines crucial grooves for fixing and positioning on the piston rod, the core component of the shock absorber. The rolled grooves are used to install elastic retaining rings or snap rings, thus firmly "locking" piston valve assemblies, sealing components, and other parts onto the piston rod, preventing them from dislodging under high pressure. Additionally, some grooves also provide precise installation positions for seals or guide sleeves.

[0003] The grooving device mainly employs a cold rolling forming process. By driving the piston rod to rotate, the rolling roller is slowly and steadily pressed into the surface of the high-speed rotating piston rod under a huge radial force. The material on the piston rod surface undergoes plastic deformation under pressure, and the squeezed material flows to both sides of the roller, forming a groove that conforms to the shape of the roller, as shown in prior art publications CN213495977U and CN222036436U. Currently, the methods for clamping the piston rod in this type of grooving equipment include the following: using clamps to clamp the piston rod from the outside, supporting the piston rod from the inner wall of the piston rod, or setting up a special support device for fixation. All of these clamping methods fix both ends of the piston rod, and the fixed area is relatively concentrated, which can easily lead to localized deformation due to stress. Moreover, the clamping structure is complex, resulting in cumbersome clamping steps and low efficiency.

[0004] Therefore, it is necessary to invent a piston rod grooving device that can avoid force concentration at the piston rod end and can be quickly clamped to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an automotive piston rod grooving device. By using a drive roller, a first limiting roller, and a second limiting roller of the same diameter to clamp the piston rod to be grooved in the middle, it can achieve rapid clamping of the piston rod on the one hand, and increase the clamping area of ​​the piston rod on the other hand, avoiding the phenomenon of force concentration, thereby solving the above-mentioned shortcomings in the technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automotive piston rod grooving device, including a cabinet, an operating table on the top of the cabinet, and a roller group on the operating table. The roller group has a drive roller, a first limiting roller, and a second limiting roller. The drive roller and the second limiting roller are arranged side by side. There are two first limiting rollers, and the two first limiting rollers are respectively arranged above the drive roller and the second limiting roller. By driving the first limiting roller to move up and down, the piston rod can be clamped between the drive roller, the first limiting roller, and the second limiting roller. The operating table is also equipped with a roller that can move up and down. The roller is located between the drive roller and the second limit roller. The roller is located at the end of the drive roller and the second limit roller away from the first limit roller. The drive roller is driven by a motor installed on the operating table and drives the piston rod placed on the drive roller to rotate.

[0007] Preferably, one end of each of the two first limiting rollers is rotatably connected to a bracket, and an extension rod is fixed to the end of the bracket away from the first limiting rollers. The end of the extension rod away from the bracket is connected to a first hydraulic cylinder that drives the first limiting rollers to move up and down.

[0008] Preferably, the output end of the motor is fixed to one end of the drive roller, and a bearing seat is provided at the connection between the output end of the motor and the drive roller.

[0009] Preferably, a frame is also installed on the operating table, and a second hydraulic cylinder that drives the rolling roller to move up and down is installed on the top of the frame. The moving end of the second hydraulic cylinder is connected to a limit block, and the limit block can move up and down along the inner wall of the frame. The rolling roller is rotatably mounted on the limit block.

[0010] Preferably, an auxiliary frame is fixed to one side of the frame, and the first hydraulic cylinder is fixed to the auxiliary frame by bolts.

[0011] Preferably, both ends of the second limiting roller are rotatably connected to mounting seats, and the end of the drive roller away from the motor is rotatably connected to one of the mounting seats.

[0012] Preferably, the diameters of the drive roller, the first limiting roller, and the second limiting roller are equal.

[0013] Preferably, a protective cover is installed on the top of the cabinet, and the protective cover covers the motor.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. By using drive rollers, first limiting rollers and second limiting rollers of the same diameter to clamp the piston rod to be grooved in the middle, it is possible to quickly clamp the piston rod and increase the clamping area of ​​the piston rod to avoid the phenomenon of force concentration. 2. By adjusting the height of the second limiting roller, piston rods of different diameters can be clamped between the drive roller, the first limiting roller, and the second limiting roller, making this invention applicable to the grooving processing of piston rods of different specifications, thus expanding the scope of application of this invention and achieving three benefits in one go. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the motor, drive roller, and rolling wheel of this utility model; Figure 3 This is a schematic diagram of the first limiting roller, the second limiting roller, and the drive roller of this utility model; Figure 4 This is a schematic diagram of the second limiting roller and the drive roller of this utility model; Figure 5 This is a schematic diagram of the rolling roller and the first limiting roller of this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Cabinet, 11. Control panel, 12. Protective cover, 2. Roller group, 21. Drive roller, 211. Bearing seat, 212. Motor, 213. Mounting seat, 22. First limit roller, 221. Bracket, 222. Extension rod, 223. First hydraulic cylinder, 224. Auxiliary frame, 23. Second limit roller, 3. Rolling roller, 31. Limiting block, 32. Second hydraulic cylinder, 33. Frame. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0019] This utility model provides, for example Figure 1-5The illustrated automotive piston rod grooving device includes a cabinet 1, with an operating platform 11 on top of the cabinet 1. A roller assembly 2 is mounted on the operating platform 11. The roller assembly 2 comprises a drive roller 21, a first limiting roller 22, and a second limiting roller 23. The diameters of the drive roller 21, the first limiting roller 22, and the second limiting roller 23 are equal. The drive roller 21 and the second limiting roller 23 are arranged side-by-side. Two first limiting rollers 22 are provided, and each first limiting roller 22 is respectively positioned... Positioned above the drive roller 21 and the second limiting roller 23, when clamping the piston rod, the first limiting roller 22 can be driven upward first, so that the two first limiting rollers 22 can press on the piston rod to be grooved, and the drive roller 21 and the second limiting roller 23 are located below the piston rod. At this time, under the combined action of the two first limiting rollers 22, the drive roller 21 and the second limiting roller 23, the piston rod can be clamped between the drive roller 21 and the second limiting roller 23. The operation is relatively simple, thereby improving the clamping efficiency of the piston rod.

[0020] This embodiment, by adjusting the height of the first limiting roller 22, can also be used to clamp piston rods of different diameters, thereby expanding the applicability of this utility model. Furthermore, in this embodiment, the drive roller 21, the first limiting roller 22, and the second limiting roller 23 can contact the piston rod along their length, increasing the contact area with the piston rod and preventing deformation caused by concentrated force in the piston rod clamping area.

[0021] It is worth noting that the lengths of the drive roller 21 and the second limiting roller 23 are both longer than the length of the first limiting roller 22, and the length of the first limiting roller 22 is slightly shorter than the length of the piston rod. This arrangement allows the length of the piston rod that is clamped to be much greater than its unclamped length, so that the piston rod can be firmly restricted between the two first limiting rollers 22 and the drive roller 21 and the second limiting roller 23.

[0022] Among them, such as Figure 2 , Figure 3 and Figure 5 As shown: One end of each of the two first limiting rollers 22 is rotatably connected to a bracket 221. An extension rod 222 is fixed to the end of the bracket 221 away from the first limiting rollers 22. The end of the extension rod 222 away from the bracket 221 is connected to a first hydraulic cylinder 223 that drives the first limiting rollers 22 to move up and down. By activating the first hydraulic cylinder 223, the extension rod 222 can be pushed to drive the bracket 221 and the two first limiting rollers 22 mounted on the bracket 221 to move down or up, thereby adjusting the distance between the first limiting rollers 22 and the driving roller 21.

[0023] A vertically movable roller 3 is also provided on the operating table 11. The roller 3 is located between the drive roller 21 and the second limiting roller 23. The roller 3 is located at the end of the drive roller 21 and the second limiting roller 23 away from the first limiting roller 22. A frame 33 is also installed on the operating table 11. An auxiliary frame 224 is fixed on one side of the frame 33. The first hydraulic cylinder 223 is fixed to the auxiliary frame 224 by bolts. A second hydraulic cylinder 32 that drives the roller 3 to move up and down is installed on the top of the frame 33. The moving end of the second hydraulic cylinder 32 is connected to a limiting block 31. The limiting block 31 moves up and down along the inner wall of the frame 33. The roller 3 is rotatably mounted on the limiting block 31. Furthermore, a bearing seat 211 is provided at the connection between the output end of the motor 212 and the drive roller 21. The bearing seat 211 can support the connection between the output end of the motor 212 and the drive roller 21, enhancing the stability of the structure. At the same time, both ends of the second limiting roller 23 are rotatably connected to mounting seats 213. The end of the drive roller 21 away from the motor 212 is rotatably connected to one of the mounting seats 213. The mounting seats 213 can support the drive roller 21 and the second limiting roller 23, both of which can improve the stability of the structure.

[0024] When the second hydraulic cylinder 32 is activated, it can drive the limiting block 31 and the rolling roller 3 installed on the limiting block 31 to move downward, so that the edge of the rolling roller 3 can press into the surface of the piston rod, thereby forming a groove on the surface of the piston rod. At the same time, the drive roller 21 is driven to rotate by the motor 212 installed on the operating table 11, and the output end of the motor 212 is fixed to one end of the drive roller 21. The rotating drive roller 21 can synchronously drive the piston rod placed above it to rotate, thereby forming an annular groove on the surface of the piston rod using the rolling roller 3.

[0025] In addition, a protective cover 12 is installed on the top of the cabinet 1. The protective cover 12 covers the motor 212 and is used to protect the motor 212. A control panel is also installed on the outer wall of the protective cover 12. The control panel has multiple operation buttons, which can be used to control the operation of the motor 212, the first hydraulic cylinder 223, and the second hydraulic cylinder 32. The specific circuit structures involved can all be implemented by existing technology and will not be described in detail here.

[0026] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A piston rod grooving device for automobiles, comprising a cabinet (1), wherein an operating table (11) is provided on the top of the cabinet (1), characterized in that: The operating table (11) is provided with a roller group (2), which has a drive roller (21), a first limiting roller (22) and a second limiting roller (23). The drive roller (21) and the second limiting roller (23) are arranged side by side. There are two first limiting rollers (22), and the two first limiting rollers (22) are respectively arranged above the drive roller (21) and the second limiting roller (23). By driving the first limiting roller (22) to move up and down, the piston rod can be clamped between the drive roller (21), the first limiting roller (22) and the second limiting roller (23). The operating table (11) is also provided with a roller (3) that can move up and down. The roller (3) is located between the drive roller (21) and the second limiting roller (23).

2. The automotive piston rod grooving device according to claim 1, characterized in that: Two first limiting rollers (22) are rotatably connected to a bracket (221) at one end. An extension rod (222) is fixed at the end of the bracket (221) away from the first limiting rollers (22). A first hydraulic cylinder (223) that drives the first limiting rollers (22) to move up and down is connected to the end of the extension rod (222) away from the bracket (221).

3. The automotive piston rod grooving device according to claim 1, characterized in that: The rolling roller (3) is located at the end of the drive roller (21) and the second limiting roller (23) away from the first limiting roller (22). The drive roller (21) is driven by a motor (212) mounted on the operating table (11) and drives the piston rod placed on the drive roller (21) to rotate. The output end of the motor (212) is fixed to one end of the drive roller (21), and a bearing seat (211) is provided at the connection between the output end of the motor (212) and the drive roller (21).

4. The automotive piston rod grooving device according to claim 2, characterized in that: The operating table (11) is also equipped with a frame (33). A second hydraulic cylinder (32) is installed on the top of the frame (33) to drive the rolling roller (3) to move up and down. The moving end of the second hydraulic cylinder (32) is connected to a limit block (31). The limit block (31) can move up and down along the inner wall of the frame (33). The rolling roller (3) is rotatably mounted on the limit block (31).

5. The automotive piston rod grooving device according to claim 4, characterized in that: An auxiliary frame (224) is fixed on one side of the frame (33), and the first hydraulic cylinder (223) is fixed to the auxiliary frame (224) by bolts.

6. The automotive piston rod grooving device according to claim 3, characterized in that: The second limiting roller (23) is rotatably connected to mounting bases (213) at both ends, and the end of the drive roller (21) away from the motor (212) is rotatably connected to one of the mounting bases (213).

7. The automotive piston rod grooving device according to claim 1, characterized in that: The diameters of the drive roller (21), the first limiting roller (22), and the second limiting roller (23) are equal.

8. The automotive piston rod grooving device according to claim 3, characterized in that: The top of the cabinet (1) is equipped with a protective cover (12), which covers the motor (212).

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