A new type of guide rod cylinder

By introducing threaded connections of adjusting sleeve and locking sleeve into the guide rod cylinder, the problem of fixed stroke is solved, enabling flexible stroke adjustment and impact buffering of the guide rod cylinder, thus improving the adaptability and practicality of the equipment.

CN224283078UActive Publication Date: 2026-05-26ZHEJIANG HAODA PNEUMATIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG HAODA PNEUMATIC TECH CO LTD
Filing Date
2025-05-30
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The existing guide rod cylinder has a fixed stroke that cannot be flexibly adjusted, which limits its applicability in tasks that require dynamic stroke adjustment and results in high modification costs.

Method used

A novel guide rod cylinder was designed. By setting an adjusting sleeve and a locking sleeve between the guide rod and the guide seat, the stroke can be adjusted using a threaded connection, and the impact can be reduced by absorbing the impact through a spring buffer block.

Benefits of technology

It enables flexible adjustment of cylinder stroke, reduces modification costs and time, improves adaptability, and enhances the practicality of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a novel guide rod cylinder, including a bracket and a cylinder mounted on the bracket. The cylinder contains a piston rod with a connecting plate at one end. Guide rods are located on both sides of the connecting plate, and guide seats are located on both sides of the bracket. The two guide rods are slidably connected to the interior of the two guide seats. The end of each guide rod facing away from the connecting plate has a threaded portion. An adjusting sleeve and a locking sleeve are sequentially screwed onto the threaded portion. The adjusting sleeve has a cavity inside, and a buffer block is movably mounted at the end of the cavity near the guide seat. A spring is located inside the cavity, with its two ends abutting against the cavity and the buffer block, respectively. This utility model allows for adjustment of the stroke between the guide rod and the guide seat by moving the adjusting sleeve on the guide rod, thus facilitating cylinder stroke adjustment. Furthermore, the adjusting sleeve provides cushioning between the guide seat and the guide rod, reducing impact, making it more practical than existing guide rod cylinders.
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Description

Technical Field

[0001] This utility model relates to the field of guide rod cylinder technology, and specifically to a novel guide rod cylinder. Background Technology

[0002] A guide rod cylinder is a special pneumatic actuator that combines a guide rod and a cylinder, designed to improve motion accuracy and load capacity. It consists of a cylinder body, piston, piston rod, and parallel guide rod. The guide rod is typically mounted parallel to the piston rod to ensure linear piston movement and reduce lateral offset. The guide rod is fixed by linear bearings or sliding bushings, distributing external loads and reducing the risk of piston rod bending, making it particularly suitable for high lateral force applications.

[0003] For example, Chinese Patent Publication No. CN209244962U discloses a guide rod cylinder, including a cylinder barrel, a cylinder piston, a cylinder liner bracket, a guide rod, and a guide rod end bracket. The cylinder barrel is sleeved on the outside of the cylinder piston and fixed inside the cylinder liner bracket. The two ends of the guide rod are fixed to the guide rod end bracket and pass through the cylinder liner bracket. The cylinder piston consists of a piston rod, a piston protrusion, and a protrusion sealing ring. The piston protrusion is located at the front end of the piston rod and is integrally formed with the piston rod. The protrusion sealing ring is sleeved on the piston protrusion, and the side of the piston protrusion has an arc-shaped groove design. This utility model has a compact machine size, is easy to operate manually, and adopts a multi-connection groove and connection hole design, making the equipment widely applicable. Furthermore, it is made of high-quality steel, making it durable, wear-resistant, and with a long service life, making it suitable for widespread use.

[0004] For example, the stroke of the guide rod cylinder in the aforementioned patent is usually predetermined by the mechanical structure (such as the length of the piston rod and guide rod), and cannot be flexibly adjusted by external limiters or adjustment mechanisms like some standard cylinders. This fixed stroke means the cylinder is only suitable for specific workstations or fixed-action applications, and cannot adapt to diverse tasks requiring dynamic stroke adjustment (such as machining or gripping workpieces of different sizes). If the process changes (such as extending the stroke for production line upgrades), the cylinder must be replaced or the mechanical structure redesigned, increasing modification costs and time.

[0005] Therefore, the applicant has made beneficial designs and found a way to solve the above problems. The technical solution to be introduced below is generated in this context. Utility Model Content

[0006] The present invention provides a novel guide rod cylinder to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A novel guide rod cylinder includes a bracket and a cylinder mounted on the bracket. The cylinder contains a piston rod with a connecting plate at one end. Guide rods are located on both sides of the connecting plate. Guide seats are located on both sides of the bracket. The two guide rods are slidably connected to the interior of the two guide seats. A threaded portion is located at the end of each guide rod away from the connecting plate. An adjusting sleeve and a locking sleeve are sequentially screwed onto the threaded portion. The adjusting sleeve has a cavity inside. A buffer block is movably mounted at the end of the cavity near the guide seat. A spring is located inside the cavity, with both ends of the spring abutting against the cavity and the buffer block, respectively.

[0009] Preferably, the surfaces of the adjusting sleeve and the locking sleeve are each provided with a plurality of anti-slip protrusions arranged in an array.

[0010] Preferably, the bracket has mounting holes.

[0011] Beneficial effects

[0012] The above-mentioned technical solutions of one or more of the novel guide rod cylinder provided by this utility model embodiment have at least one of the following technical effects:

[0013] Through the above-described technical solution, this utility model allows for the adjustment of the stroke between the guide rod and the guide seat by rotating the adjusting sleeve on the guide rod during use. This, in turn, allows for the adjustment of the cylinder's output stroke. Furthermore, when the guide rod slides between the guide rod and the guide seat, one end of the guide seat contacts the buffer block, and the impact is absorbed by the spring. The adjusting sleeve also provides buffering between the guide seat and the guide rod, reducing the impact. This design is more practical than existing guide rod cylinders. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 3 for Figure 2 A magnified structural diagram at point A.

[0017] The correspondence between the labels and component names in the attached figures is as follows:

[0018] 1. Bracket; 2. Cylinder; 3. Piston rod; 4. Connecting plate; 5. Guide rod; 6. Guide seat; 7. Threaded part; 8. Adjusting sleeve; 9. Locking sleeve; 10. Cavity; 11. Buffer block; 12. Spring; 13. Anti-slip protrusions; 14. Mounting hole. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0022] To avoid excessive and unnecessary details, well-known structures or functions will not be described in detail in the following embodiments.

[0023] like Figure 1-3 As shown, it is a structural schematic diagram of a novel guide rod cylinder according to a preferred embodiment of the present invention.

[0024] In this embodiment, a bracket 1 and a cylinder 2 mounted on the bracket 1 are included. A piston rod 3 is provided inside the cylinder 2. A connecting plate 4 is provided at one end of the piston rod 3. Guide rods 5 are provided on both sides of the connecting plate 4. Guide seats 6 are provided on both sides of the bracket 1. The two guide rods 5 are slidably connected to the two guide seats 6 respectively. When the piston rod 3 moves, it drives the connecting plate 4 to drive the two guide rods 5 to move along the guide seats 6. The piston rod 3 and the guide rods 5 move the same distance. The end of the guide rod 5 away from the connecting plate 4 is provided with a threaded part 7. An adjusting sleeve 8 and a locking sleeve 9 are screwed on the threaded part 7 from left to right. The adjusting sleeve 8 and the locking sleeve 9 are tightened together to fix the adjusting sleeve 8. A cavity 10 is provided inside the adjusting sleeve 8. A buffer block 11 is movably provided at the end of the cavity 10 near the guide seat 6. A spring 12 is provided inside the cavity 10. The two ends of the spring 12 abut against the cavity 10 and the buffer block 11 respectively. In use, by turning the adjusting sleeve 8 to move its position on the guide rod 5, the stroke between the guide rod 5 and the guide seat 6 can be adjusted, thereby adjusting the output stroke of the cylinder 2. When the guide rod 5 slides between the guide seat 6 and the guide seat 6, one end of the guide seat 6 contacts the buffer block 11, and the impact is absorbed by the spring 12. The adjusting sleeve 8 can buffer the impact between the guide seat 6 and the guide rod 5, reducing the impact. It is more practical than the existing guide rod cylinder 2.

[0025] In this embodiment, the surfaces of the adjusting sleeve 8 and the locking sleeve 9 are provided with a plurality of anti-slip protrusions 13 arranged in an array. The anti-slip protrusions 13 increase the surface friction between the adjusting sleeve 8 and the locking sleeve 9, preventing slippage when turning.

[0026] In this embodiment, the bracket 1 is provided with mounting holes 14, and the bracket 1 is installed in the designated area by inserting screws through the mounting holes 14.

[0027] The present invention relates to a novel guide rod cylinder, the installation method, connection method, or setting method of which are all common mechanical methods. Any method that can achieve its beneficial effect can be implemented.

[0028] All technologies not described in detail in this utility model are known technologies. Those skilled in the art can easily implement this utility model based on their understanding of this specification, and the contents shown in the accompanying drawings are part of this specification.

[0029] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A new type of guide rod cylinder comprising a bracket (1) and a cylinder (2) mounted on the bracket (1), characterized in that: The cylinder (2) is provided with a piston rod (3) inside. One end of the piston rod (3) is provided with a connecting plate (4). Both sides of the connecting plate (4) are provided with guide rods (5). Both sides of the bracket (1) are provided with guide seats (6). The two guide rods (5) are slidably connected to the two guide seats (6) respectively. The end of the guide rod (5) away from the connecting plate (4) is provided with a threaded part (7). An adjusting sleeve (8) and a locking sleeve (9) are screwed onto the threaded part (7) in sequence. The adjusting sleeve (8) is provided with a cavity (10) inside. A buffer block (11) is movably provided at the end of the cavity (10) near the guide seat (6). A spring (12) is provided in the cavity (10). The two ends of the spring (12) abut against the cavity (10) and the buffer block (11) respectively.

2. A novel guide rod gas cylinder according to claim 1, characterized in that: The adjusting sleeve (8) and the locking sleeve (9) are both provided with a plurality of anti-slip protrusions (13) evenly distributed on their surfaces.

3. The novel guide rod cylinder according to claim 1, characterized in that: The bracket (1) has mounting holes (14).