Adjustable stroke device and clamping cylinder

Abstract

The utility model relates to the technical field of clamping mechanisms, and discloses a stroke-adjustable device and a clamping cylinder in order to solve the technical problem that diversified requirements cannot be met due to the fact that the stroke of a traditional clamping cylinder cannot be adjusted, the stroke-adjustable device comprises a connecting seat fixedly connected with the upper portion of a piston rod, and an inner screw groove is formed in the connecting seat. And the fork-shaped piece is downwards provided with a stud section matched with the inner screw groove of the connecting seat, so that a joint sleeve structure is formed. The clamping air cylinder comprises an upper cylinder body and a lower cylinder body which are fixedly connected up and down, a rotating shaft penetrating through the top of the upper cylinder body is arranged in the upper cylinder body, clamping arms are connected to the two ends of the rotating shaft and located outside the upper cylinder body, the fork-shaped piece is arranged in the upper cylinder body, and a connecting block hinged to the fork-shaped piece and the rotating shaft is arranged in the upper cylinder body. The air cylinder with the joint sleeve mechanism is used, if the opening angle of the air cylinder needs to be temporarily changed on site, the opening angle can be adjusted on site, and the air cylinder does not need to be replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to clamping mechanism technical field especially adjustable stroke device and clamping cylinder. BACKGROUND

[0002] As a common execution element in mechanical devices, the cylinder is widely used in the automation industry, machining and assembly, etc. Among them, the clamping cylinder is particularly widely used due to its reliable performance and simple operation. However, in the prior art, most clamping cylinders have obvious limitations when facing complex and variable installation spaces and usage in actual applications due to their fixed structure design. For example, when the installation space is insufficient or the working condition is changed, the cylinder stroke needs to be changed, but the existing cylinder stroke is usually fixed and cannot be quickly adapted through on-site adjustment, which has a negative impact on production efficiency and cost control.

[0003] For example, the utility model patent publication number CN211305357U discloses an integrated clamp, which has a fixed stroke design and lacks adjustment function. When the stroke needs to be changed on site, it can usually only be solved by re-purchasing an adaptive cylinder or replacing parts. This method not only increases the time cost, but also causes resource waste and inconvenience of on-site debugging.

[0004] In summary, the existing clamping cylinders generally have the following technical defects:

[0005] 1. The stroke is not adjustable: the cylinder design does not consider the stroke adjustment function, which cannot meet the diversified application requirements;

[0006] 2. The adjustment function is single: the cylinder lacks the ability to adjust the stroke through its own mechanical structure, resulting in insufficient adaptability;

[0007] 3. High replacement cost: replacing the cylinder or parts on site due to working condition requirements increases production and maintenance costs. UTILITY MODEL CONTENTS

[0008] The utility model aims to provide an adjustable stroke device and a clamping cylinder to solve the technical problem that the stroke of the traditional clamping cylinder is not adjustable, which cannot meet the diversified requirements.

[0009] To achieve the above-mentioned purpose, the utility model provides an adjustable stroke device and a clamping cylinder,

[0010] The adjustable stroke device comprises a connecting seat fixedly connected with the upper part of the piston rod, an inner screw groove is arranged in the connecting seat, the fork-shaped piece is downwardly provided with a screw column segment matched with the inner screw groove of the connecting seat, and a sleeve structure is formed.

[0011] The clamping cylinder includes an upper cylinder body and a lower cylinder body that are fixedly connected. A rotating shaft that passes through the top of the upper cylinder body is provided inside the upper cylinder body. Clamping arms are connected to both ends of the rotating shaft. The clamping arms are located outside the upper cylinder body and are equipped with the aforementioned adjustable stroke device. A fork-shaped component is provided inside the upper cylinder body. Connecting blocks that are hinged to the fork-shaped component and the rotating shaft are provided inside the upper cylinder body.

[0012] The adjustable stroke device and clamping cylinder provided by this utility model have the following advantages:

[0013] This utility model provides an adjustable stroke device and a clamping cylinder. The piston rod adopts a split structure, and its front end is connected to the clamping mechanism by a screw connection. Combined with the use of a sleeve mechanism, the stroke can be directly adjusted on-site without replacing the cylinder when the opening angle needs to be temporarily adjusted, significantly improving operational flexibility and ease of use. Through innovative mechanical structure design, this clamping cylinder can achieve stroke adjustment on its own, featuring adjustable stroke, simplified structure, and convenient on-site adjustment. While meeting diverse working conditions, it effectively avoids the cylinder replacement problem caused by fixed stroke in existing technologies, simplifies the overall structure, reduces operating costs, greatly improves on-site adaptability, and achieves convenient adjustment, diversified functions, and efficient resource utilization, effectively overcoming the shortcomings of traditional cylinders. Attached Figure Description

[0014] Figure 1 The overall structural diagram of the clamping cylinder provided by this utility model;

[0015] Figure 2 A perspective view of the adjustable stroke device provided by this utility model.

[0016] In the diagram: 1. Upper cylinder body; 2. Lower cylinder body; 11. Fork-shaped part; 12. Connecting seat; 13. Piston rod; 14. Return pin; 15. Rotating shaft; 16. Connecting block; 17. Clamping arm; 21. Upper cover; 22. Lower cover. Detailed Implementation

[0017] 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 only used to explain this utility model and are not intended to limit this utility model.

[0018] See Figure 1 The clamping cylinder includes a lower cylinder body 2 and an upper cylinder body 1 fixedly connected to the upper part of the lower cylinder body 2. The top and bottom of the lower cylinder body 2 are respectively fixedly provided with an upper cover 21 and a lower cover 22. A piston is provided inside the lower cylinder body 2. The piston is fixedly connected with a piston rod 13. One end of the piston rod 13 is located inside the lower cylinder body 2, and the other end of the piston rod 13 extends into the upper cylinder body 1.

[0019] A clamping arm 17 is provided at one top end of the upper cylinder body 1. A rotating shaft 15 is provided through the top of the upper cylinder body 1. The clamping arm 17 is movably connected to the upper cylinder body 1 via the rotating shaft 15. A connecting block 16 is provided at the top of the rotating shaft 15. A fork-shaped component 11 is provided inside the upper cylinder body 1. The upper part of the fork-shaped component 11 is hinged to the connecting block 16. The clamping arm 17 is located outside the upper cylinder body 1. A return pin 14 is provided at the top of the upper cylinder body 1. The bottom end of the return pin 14 cooperates with the connecting block 16.

[0020] See Figure 1 and Figure 2 In order to achieve adjustable stroke of the clamping cylinder, this utility model provides an adjustable stroke device, including a connecting seat 12 fixedly connected to the upper part of the piston rod 13, an internal threaded groove provided in the connecting seat 12, and a fork-shaped member 11 forming a stud section threaded with the connecting seat 12, forming a sleeve structure.

[0021] Working principle:

[0022] This structure separates the fork-shaped part 11 from the piston rod 13, and uses the method of internal threading of the piston rod 13 and the stud section of the fork-shaped part 11 to enter the depth of the internal thread groove through the stud section, thereby adjusting the stroke of the piston to the lower cover 22 and achieving the function of adjusting the cylinder stroke. The connecting seat 22 is also designed according to the guide rail groove of the housing to limit the movement direction of the piston rod 13 and the connecting seat 22. The cylinder sensor block can also be adjusted according to the connecting seat 22 to realize the cylinder status detection function.

[0023] By incorporating a sectional structure, the cylinder can flexibly adjust its opening angle under different operating conditions, thereby meeting diverse usage requirements. Compared to traditional fixed cylinders, this device avoids the hassle of frequently replacing cylinders due to stroke limitations.

[0024] This device achieves stroke adjustment through a threaded mechanism, which is simple and compact in structure, reduces the additional costs caused by unnecessary cylinder replacement, and optimizes resource utilization.

[0025] Through experimental verification, the device withstood rigorous opening and clamping tests under different stroke and cylinder diameter conditions, and the piston rod did not deform or break. The overall service life of the cylinder can reach 2 million cycles.

[0026] With the synchronous adjustment function of the cylinder's sensor block and connecting seat, precise adjustment of the status detection function can be achieved, further improving the accuracy of automated detection and control.

[0027] The adjustable stroke device and clamping cylinder provided by this utility model have the following advantages:

[0028] This utility model achieves adjustable stroke, simple on-site operation, and high reliability through optimized mechanical structure design, solving the limitation problem caused by non-adjustable stroke in the prior art.

[0029] The piston rod adopts a split structure, with the front end screwed in. For cylinders using a spool mechanism, if the cylinder opening angle needs to be temporarily changed on-site, it can be adjusted without replacing the cylinder. The clamping cylinder can adjust its stroke through its own mechanical structure.

[0030] Cylinders that achieve stroke adjustment through mechanical means not only simplify the structure but also significantly improve on-site adaptability, enabling convenient adjustment, diversified functions, and efficient resource utilization. This effectively compensates for the shortcomings of existing technologies and promotes the wider application of cylinders in automation and machining fields.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable stroke device, characterized in that, It includes a connecting seat (12) fixedly connected to the upper part of the piston rod (13), the connecting seat (12) is provided with an inner threaded groove, and the fork-shaped part (11) is provided with a stud section that cooperates with the inner threaded groove of the connecting seat (12) to form a sleeve structure.

2. A clamping cylinder, characterized in that, The device includes an upper cylinder (1) and a lower cylinder (2) that are fixedly connected vertically. The upper cylinder (1) is provided with a rotating shaft (15) that passes through its top. Both ends of the rotating shaft (15) are connected to clamping arms (17). The clamping arms (17) are located outside the upper cylinder (1) and are provided with an adjustable stroke device as described in claim 1. The fork-shaped member (11) is provided inside the upper cylinder (1). The upper cylinder (1) is provided with connecting blocks (16) that are respectively hinged to the fork-shaped member (11) and the rotating shaft (15).

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