Special rodless cylinder end cover structure

Abstract

The utility model relates to a special rodless cylinder end cover structure. Comprising a cylinder barrel, a piston sliding on the cylinder barrel, an end cover assembly used for limiting the sliding distance of the piston, an outer steel belt used for protection and an inner steel belt used for sealing the cylinder barrel. End cover assemblies are mounted at two ends of the cylinder barrel; two ends of the outer steel belt and two ends of the inner steel belt are respectively fixed on the two groups of end cover assemblies; the top ends of the pistons are slidably connected to the outer steel belt and the inner steel belt. The technical problems that in the prior art, an end cover of a rodless air cylinder is heavy and complex in structure, a support needs to be additionally arranged during installation, the assembling complexity is increased, the air inlet efficiency is low, consequently, the acceleration performance of the air cylinder is insufficient, the production line takt is affected, meanwhile, the downtime is long when an end cover assembly is maintained and replaced, and the equipment utilization rate is reduced are solved.

Description

Technical Field

[0001] This utility model relates to the field of rodless cylinders, and in particular to a special rodless cylinder end cap structure. Background Technology

[0002] Traditional rodless cylinder end cap structures suffer from significant technical drawbacks in terms of compactness, ease of installation, and intake efficiency: First, the integrated end cap design results in a bulky structure, high manufacturing costs, and requires disassembly of the entire component for maintenance, which is time-consuming and labor-intensive; second, the intake port is often located on the side of the cylinder barrel, leading to a circuitous airflow path, limiting the intake volume, and affecting the cylinder's response speed; third, the steel band fixing method relies on a complex locking mechanism, which is prone to loosening due to long-term vibration, reducing operational stability. While split end caps simplify some aspects of the structure, they lack integrated design, and the connection between the sheet metal bracket and the end cap is prone to cracking due to stress concentration, resulting in insufficient sealing performance and a high gas leakage rate. Furthermore, traditional buffer structures often use external dampers, which occupy a large space and are inconvenient to adjust, making them unsuitable for high-speed reciprocating motion scenarios.

[0003] For high-frequency, high-load applications in automated equipment, the limitations of traditional rodless cylinders are more pronounced: installation requires additional brackets, increasing assembly complexity; low air intake efficiency leads to insufficient cylinder acceleration performance, affecting production line cycle time; and long downtime during maintenance and end cap component replacement reduces equipment utilization. There is an urgent need for a rodless cylinder structure integrating a split end cap, high-efficiency air intake, and rapid installation to overcome the technical bottlenecks of high cost, low efficiency, and cumbersome maintenance associated with traditional designs. Utility Model Content

[0004] This application provides a special rodless cylinder end cap structure, which solves the technical problems of the existing rodless cylinder end cap structure being bulky and complex, requiring additional brackets for installation, increasing assembly complexity, having low air intake efficiency leading to insufficient cylinder acceleration performance, affecting production line cycle time, and having long downtime when maintaining and replacing end cap components, thus reducing equipment utilization.

[0005] The technical solution adopted in the embodiments of this application is as follows:

[0006] A special rodless cylinder end cap structure includes a cylinder barrel, a piston sliding on the cylinder barrel, an end cap assembly for limiting the sliding distance of the piston, an outer steel strip for protection, and an inner steel strip for sealing the cylinder barrel; the end cap assembly is installed at both ends of the cylinder barrel; the two ends of the outer steel strip and the two ends of the inner steel strip are respectively fixed to two sets of end cap assemblies; the top end of the piston is slidably connected to the outer steel strip and the inner steel strip.

[0007] A further technical solution is as follows: the end cap assembly includes an end cap bracket, an embedded end cap, a buffer head, an embedded block, a steel strip pressure block, an O-ring, a buffer screw, a fixing nut, and a fixing bolt; the buffer head is installed on the embedded end cap by the buffer screw and the fixing nut; the O-ring is sleeved on the embedded end cap; a groove is formed at the top of the embedded end cap; the embedded block is embedded in the groove; the ends of the outer steel strip and the inner steel strip are both fixed to the steel strip pressure block by the fixing bolt, and the fixing bolt connects the steel strip pressure block and the embedded block; the embedded end cap is installed on the end cap bracket by the fixing bolt; the end cap bracket is installed on the cylinder end by the fixing bolt; the buffer head is located in the inner cavity of the cylinder.

[0008] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0009] 1. Due to the adoption of cylinder, piston, end cap assembly, outer steel strip, and inner steel strip, this end cap structure simplifies the processing flow and reduces manufacturing costs through a split design (end cap bracket and embedded end cap). The end face air inlet design shortens the airflow path, increases air intake, and significantly accelerates cylinder response speed. The combination of steel strip pressure block and embedded block enhances the reliability of the steel strip connection and prevents vibration-induced loosening. The integrated layout of the buffer head and O-ring saves space while improving sealing and buffering efficiency. The modular structure supports quick assembly and disassembly, improving maintenance efficiency, and is particularly suitable for high-frequency automated production lines. Through structural optimization and functional integration, the overall design overcomes the technical challenges of traditional rodless cylinders being bulky, inefficient, and complex to maintain, providing an efficient and reliable power solution for industrial equipment. Attached Figure Description

[0010] Figure 1 This is a cross-sectional view of the overall structure of a special rodless cylinder end cap structure in an embodiment of this utility model.

[0011] Figure 2 This is an exploded perspective view of a special rodless cylinder end cap structure in an embodiment of this utility model.

[0012] Figure 3 This is an exploded side view of a special rodless cylinder end cap structure in an embodiment of this utility model.

[0013] In the diagram: 1. Cylinder; 2. Piston; 3. End cap assembly; 4. Outer steel strip; 5. Inner steel strip; 31. End cap bracket; 32. Embedded end cap; 33. Buffer head; 34. Embedded block; 35. Steel strip pressure block; 36. O-ring; 37. Buffer screw; 38. Fixing nut; 39. Fixing bolt. Detailed Implementation

[0014] This application provides a special rodless cylinder end cap structure, which solves the technical problems of the existing rodless cylinder end cap structure being bulky and complex, requiring additional brackets for installation, increasing assembly complexity, having low air intake efficiency leading to insufficient cylinder acceleration performance, affecting production line cycle time, and having long downtime when maintaining and replacing end cap components, thus reducing equipment utilization.

[0015] The technical solution in this application is to solve the above problems, and the overall approach is as follows:

[0016] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0017] A special rodless cylinder end cap structure, such as Figure 1 , Figure 2 as well as Figure 3 As shown, it includes a cylinder 1, a piston 2 that slides on the cylinder 1, an end cap assembly 3 for limiting the sliding distance of the piston 2, an outer steel strip 4 for protection, and an inner steel strip 5 for sealing the cylinder 1; both ends of the cylinder 1 are equipped with end cap assemblies 3; both ends of the outer steel strip 4 and the inner steel strip 5 are respectively fixed to two sets of end cap assemblies 3; the top of the piston 2 is slidably connected to the outer steel strip 4 and the inner steel strip 5.

[0018] The end cap assembly 3 includes an end cap bracket 31, an embedded end cap 32, a buffer head 33, an embedded block 34, a steel strip pressure block 35, an O-ring 36, a buffer screw 37, a fixing nut 38, and a fixing bolt 39. The buffer head 33 is mounted on the embedded end cap 32 by the buffer screw 37 and the fixing nut 38. The O-ring 36 is fitted onto the embedded end cap 32. A groove is provided at the top of the embedded end cap 32. The embedded block 34 is embedded in the groove. The ends of the outer steel strip 4 and the inner steel strip 5 are both fixed to the steel strip pressure block 35 by the fixing bolt 39, and the fixing bolt 39 connects the steel strip pressure block 35 and the embedded block 34. The embedded end cap 32 is mounted on the end cap bracket 31 by the fixing bolt 39. The end cap bracket 31 is mounted on the end of the cylinder 1 by the fixing bolt 39. The buffer head 33 is located in the inner cavity of the cylinder 1.

[0019] Example

[0020] The rodless cylinder end cap structure includes a cylinder barrel 1, with split end cap assemblies 3 installed at both ends of the cylinder barrel 1. The end cap assembly 3 consists of an end cap bracket 31 made of sheet metal and an embedded end cap 32. The embedded end cap 32 is connected to the end cap bracket 31 by fixing bolts 39, and has an air inlet on its end face, allowing airflow to directly enter the inner cavity of the cylinder barrel 1. An embedded block 34 is embedded in a groove at the top of the embedded end cap 32. The ends of the outer steel strip 4 and the inner steel strip 5 are fixed to the embedded block 34 by steel strip pressure blocks 35 and fixing bolts 39. A buffer head 33 is installed inside the embedded end cap 32 by buffer screws 37 and fixing nuts 38. An O-ring 36 ensures the seal between the end cap and the cylinder barrel 1. The piston 2 slides on the surface of the cylinder barrel 1, and its top end is slidably connected to the outer steel strip 4 and the inner steel strip 5. The tension of the steel strips limits the stroke of the piston 2.

[0021] Operating procedures

[0022] End cap assembly: Insert the embedded end cap 32 into the end cap bracket 31, lock it in place with the fixing bolts 39, and install the buffer head 33 and O-ring 36;

[0023] Steel strip fixing: Place the ends of the outer steel strip 4 and the inner steel strip 5 above and below the steel strip pressure block 35 respectively, and fix them to the embedded block 34 by fixing bolts 39;

[0024] Cylinder integration: The end cap assembly 3 is installed to both ends of the cylinder barrel 1 via the end cap bracket 31, ensuring that the air inlet faces the preset airflow direction;

[0025] Operation and debugging: Compressed gas is introduced, piston 2 slides along the steel belt, buffer head 33 absorbs the terminal impact, and buffer screw 37 is adjusted to optimize the damping effect;

[0026] Maintenance and replacement: The embedded end cap 32 or the steel strip can be replaced separately by removing the fixing bolt 39, without disassembling the entire cylinder.

[0027] Beneficial effects

[0028] By employing a cylinder 1, piston 2, end cap assembly 3, outer steel strip 4, and inner steel strip 5, this end cap structure simplifies the processing flow and reduces manufacturing costs through a split design (end cap bracket 31 and embedded end cap 32). The end face air inlet design shortens the airflow path, increases air intake, and significantly accelerates cylinder response. The combined fixing method of the steel strip pressure block 35 and the embedded block 34 enhances the reliability of the steel strip connection and prevents loosening due to vibration. The integrated layout of the buffer head 33 and O-ring 36 saves space while improving sealing and buffering efficiency. The modular structure supports quick assembly and disassembly, improving maintenance efficiency, and is particularly suitable for high-frequency automated production lines. Through structural optimization and functional integration, the overall design overcomes the technical challenges of traditional rodless cylinders being bulky, inefficient, and complex to maintain, providing an efficient and reliable power solution for industrial equipment.

[0029] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0030] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A special rodless cylinder end cap structure, characterized in that, The cylinder (1) includes a piston (2) that slides on the cylinder (1), an end cap assembly (3) for limiting the sliding distance of the piston (2), an outer steel strip (4) for protection, and an inner steel strip (5) for sealing the cylinder (1); the end cap assembly (3) is installed at both ends of the cylinder (1); the two ends of the outer steel strip (4) and the two ends of the inner steel strip (5) are respectively fixed on the two sets of end cap assemblies (3); the top end of the piston (2) is slidably connected to the outer steel strip (4) and the inner steel strip (5).

2. A special rodless cylinder end cap structure as defined in claim 1, wherein The end cap assembly (3) includes an end cap bracket (31), an embedded end cap (32), a buffer head (33), an insert block (34), a steel strip pressure block (35), an O-ring (36), a buffer screw (37), a fixing nut (38), and a fixing bolt (39); the buffer head (33) is mounted on the embedded end cap (32) by the buffer screw (37) and the fixing nut (38); the O-ring (36) is sleeved on the embedded end cap (32); the top of the embedded end cap (32) has a groove; the insert block (34) 4) Embedded in the groove; the ends of the outer steel strip (4) and the inner steel strip (5) are both fixed to the steel strip pressure block (35) by the fixing bolt (39), and the fixing bolt (39) is connected to the steel strip pressure block (35) and the embedded block (34); the embedded end cap (32) is installed on the end cap bracket (31) by the fixing bolt (39); the end cap bracket (31) is installed on the end of the cylinder (1) by the fixing bolt (39); the buffer head (33) is located in the inner cavity of the cylinder (1).

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