Horizontal cylinder assembling mechanism for hydraulic oil cylinder production

By using the negative pressure chamber and hydraulic push rod of the horizontal cylinder assembly mechanism in synergy, the problems of seal damage and difficulty in detecting sealing performance during hydraulic cylinder assembly are solved, thereby achieving protection of seals and improving the reliability and efficiency of the assembly process.

CN121491707AActive Publication Date: 2026-02-10WUXI HAIGELISI HYDRAULIC MFG
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Patent Information

Application Number
CN202511735744.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-25
Publication Date
2026-02-10
Estimated Expiration
2045-11-25

AI Technical Summary

Technical Problem

Traditional hydraulic cylinder assembly suffers from problems such as misalignment of the cylinder body and piston assembly axes, damage to seals, and difficulty in real-time detection of sealing performance, resulting in uneven assembly, seal damage, and low production efficiency.

Method used

It adopts a horizontal cylinder loading mechanism, which utilizes the synergistic effect of the negative pressure chamber in the piston and the hydraulic push rod to provide balanced driving force, monitors negative pressure changes in real time to ensure the integrity of the seal, and achieves automated and precise docking through clamping components and controller.

Benefits of technology

This achieves protection of the seals, avoids damage during the hard-push process, ensures real-time detection of sealing performance and reliability of the assembly process, and improves production efficiency and product quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of hydraulic cylinder assembling, and discloses a horizontal cylinder assembling mechanism for hydraulic oil cylinder production. The piston in the compression cover moves to form a negative pressure cavity, suction force generated by the negative pressure cavity and thrust of the hydraulic push rod form a synergistic effect, stable and balanced driving force is provided for the piston assembly to enter the cylinder body, and the piston assembly is promoted to be smoothly embedded into the hydraulic cylinder body; the damage such as extrusion and scratching to the sealing element caused by uneven stress and direction deviation in the hard pushing process is avoided, and the integrity of the sealing element is effectively protected. Meanwhile, the pressure change in the negative pressure cavity is monitored in real time, if a sealing element is improperly mounted or the surface of a part is damaged to cause poor sealing and negative pressure abnormity, an operator can perceive and shut down for troubleshooting, sealing hidden dangers are avoided from an assembly source, the sealing performance and the overall assembly quality of the hydraulic cylinder are practically guaranteed, and the working efficiency is improved. The problems of easy damage and sealing of a sealing element in traditional assembly are solved, the assembly process is more reliable, and the quality of a finished product is more stable.
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Description

Technical Field

[0001] This invention belongs to the field of hydraulic cylinder assembly technology, specifically, it relates to a horizontal cylinder assembly mechanism for hydraulic cylinder production. Background Technology

[0002] Hydraulic cylinders are core actuators in fields such as construction machinery, automobiles, and new energy. Their assembly quality directly determines the operational stability, sealing reliability, and service life of equipment. As the industry's requirements for the precision, efficiency, and durability of hydraulic cylinders continue to increase, traditional assembly techniques have gradually revealed many insurmountable pain points.

[0003] Traditional hydraulic cylinder assembly often employs manual docking or simple mechanical push-pull methods. This single-drive approach makes it difficult to precisely control the magnitude and direction of assembly forces. Misalignment between the cylinder and piston assembly axes and concentrated thrust can easily lead to uneven force distribution or directional deviations. Furthermore, the seals (which are inherently soft and fragile, are susceptible to uneven pressure and frictional resistance during push-pull processes, resulting in scratches, deformation, lip flanges, or even tears, directly compromising their integrity.) In addition, traditional assembly processes often rely on offline, post-assembly testing for sealing performance, requiring pressure resistance and holding tests on a dedicated testing bench after assembly. This makes it impossible to detect sealing issues in real-time during assembly. If poor sealing is caused by improper seal installation or surface defects, disassembly and rework are necessary, increasing production costs and assembly time, and potentially causing secondary damage to components, severely impacting production efficiency and product yield.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: A horizontal cylinder loading mechanism for hydraulic cylinder production includes a frame.

[0006] A fixed frame is installed at one end of the frame, and a movable frame is slidably arranged at the other end of the frame. Clamping components are installed on the fixed frame and the movable frame. The clamping components are used to clamp the hydraulic cylinder and the piston assembly. A support plate is vertically installed at the bottom of the frame, and a top rod is threadedly installed at the bottom of the support plate. A guide block that slides synchronously with the moving frame is installed on the frame, and a ramp is provided at the end of the guide block. The guide block is slidably connected to the top rod. The ramp assists the support plate to fall automatically to prevent interference with the clamping components. A pair of compression shrouds are installed inside the frame. A piston is slidably arranged inside the compression shroud, and a negative pressure chamber is provided at one end of the piston. The negative pressure chamber is connected to the oil injection port of the hydraulic cylinder. A synchronizing rod is installed on the piston, and the end of the synchronizing rod is connected to the guide block. The cross-sectional area of ​​the piston is larger than the cross-sectional area of ​​the piston assembly. During the movement of the piston, the increase in volume of the negative pressure chamber is greater than the decrease in volume of the chamber corresponding to the oil injection port of the hydraulic cylinder, thereby creating a negative pressure state in the negative pressure chamber. This ensures that one end of the piston assembly is subjected to thrust and the other end is subjected to suction, which assists in assembly.

[0007] In a preferred embodiment of the present invention, a base plate is installed at the bottom of the frame, a plurality of pairs of support legs are installed at the bottom of the base plate, a pad is installed at the bottom of the support legs, and an anti-slip pad is provided at the bottom of the pad. A plurality of pairs of reinforcing ribs are installed on the base plate and the side wall of the frame. The reinforcing ribs are triangular, and mounting holes are provided on the base plate located between the reinforcing ribs.

[0008] In a preferred embodiment of the present invention, a slide rod is installed through the movable frame, and positioning frames are installed at both ends of the slide rod. The positioning frames are installed on the frame, and a fixing plate is installed on the side wall of the frame. A hydraulic push rod is installed on the fixing plate, and a bracket is installed at the output end of the hydraulic push rod. The end of the bracket is connected to the side wall of the movable frame. A controller is also installed on the side wall of the frame, and the controller is used to control the hydraulic push rod and the clamping assembly.

[0009] In a preferred embodiment of the present invention, the clamping assembly includes a clamping rod and a drive motor that slide relative to each other. A slider is mounted on the clamping rod, and the slider is slidably disposed in a groove opened on the fixed frame, and the groove is in a vertical state. An L-shaped frame is mounted on the housing of the drive motor, and the L-shaped frame is used to position the drive motor. A turntable is mounted on the output end of the drive motor, and a guide groove is mounted on the turntable. The distance from each point on the guide groove to the center of the turntable is different, and the guide groove is slidably connected to the clamping rod.

[0010] In a preferred embodiment of the present invention, a top rod is screwed onto the bottom of the pallet, a ball is mounted on the bottom of the top rod, the end of the ball is slidably connected to the surface of the guide block, a synchronization frame is mounted on the side wall of the guide block, and the synchronization frame is connected to the movable frame.

[0011] In a preferred embodiment of the present invention, a limiting frame is vertically slidably provided on the side wall of the push rod, and a limiting plate is also installed on the push rod. A limiting spring is sleeved on the side wall of the push rod between the limiting plate and the limiting frame. One end of the limiting spring is engaged with the side wall of the limiting frame, and the other end of the limiting spring is engaged with the side wall of the limiting plate. The limiting spring is used to drive the ball at the end of the push rod to fit against the surface of the guide block.

[0012] In a preferred embodiment of the present invention, a collar is installed on the side wall of the limiting frame, a limiting rod is movably installed through the collar, a limiting seat is installed at both ends of the limiting rod, the limiting seat is installed on the side wall of the frame, a connecting plate is installed on the side wall of the collar, the connecting plate is fitted to the side wall of the frame, and the side wall of the frame has several pairs of bolt holes, and the connecting plate and the frame are connected by locking bolts.

[0013] In a preferred embodiment of the present invention, a connecting pipe is installed between the pair of compression shrouds, and one end of the connecting pipe is connected to the negative pressure chamber. A connecting pipe is installed on the connecting pipe, and the end of the connecting pipe is connected to the oil injection port of the hydraulic cylinder. A pressure gauge and a pressure relief valve are also installed on the compression shroud, and the pressure gauge and the pressure relief valve are respectively connected to the negative pressure chamber.

[0014] In a preferred embodiment of the present invention, a pressure relief chamber is formed between the other end of the piston and the compression cover, and an exhaust pipe is installed inside the pressure relief chamber, the exhaust pipe movably passing through the frame.

[0015] In a preferred embodiment of the present invention, the synchronizing rod and the compression cover are movably connected, a side plate is installed at the end of the synchronizing rod, and the side plate is connected to the side wall of the guide block. A reset spring is sleeved on the side wall of the synchronizing rod inside the negative pressure chamber. One end of the reset spring is engaged with the side wall of the piston, and the other end of the reset spring is engaged with the side wall of the compression cover.

[0016] Compared with the prior art, the present invention has the following advantages: This invention creates a negative pressure chamber by moving a piston within a compression shroud. The suction force generated by this chamber, combined with the thrust of the hydraulic push rod, provides a stable and balanced driving force for the piston assembly to enter the cylinder body, ensuring smooth insertion of the piston assembly into the hydraulic cylinder. This synergistic driving method eliminates the drawbacks of the traditional hard-push mode, avoiding damage to the seals caused by uneven force and directional deviation during the hard-push process, such as squeezing and scratching, effectively protecting the integrity of the seals. Simultaneously, by monitoring the pressure changes within the negative pressure chamber in real time, if improper installation of the seals or damage to the surface of the components leads to poor sealing, abnormal negative pressure will appear. Operators can promptly detect this and stop the machine for troubleshooting, avoiding sealing hazards from the assembly source. This effectively ensures the sealing performance of the hydraulic cylinder and the overall assembly quality, solving the pain points of easily damaged seals and difficulty in timely detection of sealing problems in traditional assembly, making the assembly process more reliable and the finished product quality more stable.

[0017] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0018] In the attached diagram: Figure 1 A three-dimensional diagram of a horizontal cylinder mounting mechanism for hydraulic cylinder manufacturing; Figure 2 A bottom view of a horizontal cylinder mounting mechanism for hydraulic cylinder manufacturing; Figure 3 A side view of a horizontal cylinder loading mechanism for hydraulic cylinder production; Figure 4 A partial view of a horizontal cylinder mounting mechanism for hydraulic cylinder manufacturing; Figure 5 A clamping assembly for a horizontal cylinder loading mechanism used in the production of hydraulic cylinders. Figure 1 ; Figure 6 A clamping assembly for a horizontal cylinder loading mechanism used in the production of hydraulic cylinders. Figure 2 ; Figure 7 This is a diagram showing the internal structure of a horizontal cylinder loading mechanism for hydraulic cylinder production. Figure 8 A horizontal cylinder loading mechanism for hydraulic cylinder manufacturing. Figure 7 Enlarged view of point A in the middle; Figure 9 This is a structural diagram of the internal structure of the compression cover of a horizontal cylinder loading mechanism used in the production of hydraulic cylinders.

[0019] In the diagram: 1. Frame; 11. Base plate; 111. Support leg; 112. Pad; 113. Reinforcing rib; 114. Mounting hole; 12. Fixed frame; 121. Moving frame; 122. Slide rod; 123. Positioning frame; 13. Hydraulic push rod; 131. Bracket; 132. Fixed plate; 14. Controller; 15. Clamping assembly; 151. Clamping rod; 152. Slider; 153. Slide groove; 154. Turntable; 155. Guide groove; 156. Drive motor; 157. L-shaped frame; 2. Support plate; 21. Top rod; 211. Ball bearing; 22. Guide block; 221. Inclined ramp; 222. Synchronizing frame; 23. Limiting frame; 231. Limiting plate; 232. Limiting spring; 24. Collar; 241. Limiting rod; 242. Limiting seat; 243. Connecting plate; 244. Locking bolt; 3. Compression cover; 31. Connecting pipe; 311. Connecting pipe; 32. Piston; 321. Pressure relief chamber; 322. Air outlet pipe; 323. Negative pressure chamber; 33. Synchronizing rod; 331. Return spring; 332. Side plate; 34. Pressure gauge; 341. Pressure relief valve. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0021] Example 1: like Figures 1 to 9 As shown, a horizontal cylinder loading mechanism for hydraulic cylinder production includes a frame 1.

[0022] A fixed frame 12 is installed at one end of the frame 1, and a movable frame 121 is slidably provided at the other end of the frame 1. A clamping assembly 15 is installed on the fixed frame 12 and the movable frame 121. The clamping assembly 15 is used to clamp the hydraulic cylinder and the piston assembly. A support plate 2 is vertically installed at the bottom of the frame 1, and a top rod 21 is threadedly installed at the bottom of the support plate 2. A guide block 22 is installed on the frame 1 and slides synchronously with the moving frame 121. A ramp 221 is provided at the end of the guide block 22, and the guide block 22 is slidably connected to the top rod 21. The ramp 221 assists the support plate 2 to fall automatically and prevents interference with the clamping assembly 15. A pair of compression covers 3 are installed inside the frame 1. A piston 32 is slidably arranged inside the compression cover 3. One end of the piston 32 is provided with a negative pressure chamber 323, which is connected to the oil injection port of the hydraulic cylinder. A synchronizing rod 33 is installed on the piston 32. The end of the synchronizing rod 33 is connected to the guide block 22. The cross-sectional area of ​​the piston 32 is larger than the cross-sectional area of ​​the piston assembly. During the movement of the piston 32, the increase in volume of the negative pressure chamber 323 is greater than the decrease in volume of the chamber corresponding to the oil injection port of the hydraulic cylinder, thereby generating a negative pressure state in the negative pressure chamber 323. This ensures that one end of the piston assembly is pushed and the other end is suctioned, which assists in assembly.

[0023] like Figures 1 to 9 As shown in the specific embodiment, a base plate 11 is installed at the bottom of the frame 1. Several pairs of support legs 111 are installed at the bottom of the base plate 11, and a pad 112 is installed at the bottom of the support legs 111. An anti-slip pad is provided at the bottom of the pad 112. Several pairs of reinforcing ribs 113 are installed on the side wall of the base plate 1 and the frame 1. The reinforcing ribs 113 are triangular, and mounting holes 114 are opened on the base plate 11 located between the reinforcing ribs 113. The base plate 11 and the support legs 111 provide stable support, the anti-slip pad of the pad 112 enhances the placement stability, the triangular reinforcing ribs 113 improve the overall structural rigidity of the frame 1, and the mounting holes 114 facilitate the overall fixing and layout of the equipment, comprehensively ensuring the structural stability and installation flexibility during the assembly process.

[0024] like Figures 1 to 9As shown, a slide rod 122 is further installed through the movable frame 121. Positioning frames 123 are installed at both ends of the slide rod 122 and are mounted on the frame 1. A fixing plate 132 is installed on the side wall of the frame 1, and a hydraulic push rod 13 is installed on the fixing plate 132. A bracket 131 is installed at the output end of the hydraulic push rod 13, and the end of the bracket 131 is connected to the side wall of the movable frame 121. A controller 14 is also installed on the side wall of the frame 1, which controls the hydraulic push rod 13 and the clamping assembly 15. The slide rod 122 and the positioning frame 123 define the sliding trajectory of the movable frame 121, the hydraulic push rod 13 and the bracket 131 provide stable thrust, and the controller 14 achieves automated control, which can improve the smoothness of the movement of the movable frame 121 and the convenience of assembly operations.

[0025] The clamping assembly 15 includes a clamping rod 151 and a drive motor 156 that slide relative to each other. A slider 152 is mounted on the clamping rod 151. The slider 152 is slidably disposed in a vertical groove 153 opened on the fixed frame 12. An L-shaped frame 157 is mounted on the housing of the drive motor 156. The L-shaped frame 157 is used to position the drive motor 156. A turntable 154 is mounted on the output end of the drive motor 156. A guide groove 155 is mounted on the turntable 154. The distance from each point on the guide groove 155 to the center of the turntable 154 is different. The guide groove 155 is slidably connected to the clamping rod 151. The drive motor 156 drives the clamping rod 151 to slide along the groove 153 through the turntable 154 and the guide groove 155. The L-shaped frame 157 ensures accurate positioning of the drive motor 156, and the slider 152 improves the smoothness of the sliding of the clamping rod 151, enabling rapid clamping and precise alignment of the hydraulic cylinder and piston assembly.

[0026] Example 2: The difference between the above embodiments and this embodiment is that: Figures 1 to 9 As shown, a push rod 21 is threadedly installed at the bottom of the pallet 2. A ball bearing 211 is installed at the bottom of the push rod 21, and the end of the ball bearing 211 is slidably connected to the surface of the guide block 22. A synchronization frame 222 is installed on the side wall of the guide block 22, and the synchronization frame 222 is connected to the movable frame 121. The cooperation between the push rod 21 and the ball bearing 211 reduces the sliding friction with the guide block 22, and the synchronization frame 222 ensures the synchronous movement of the guide block 22 and the movable frame 121, which can improve the smoothness and synchronization accuracy of the lifting and lowering adjustment of the pallet 2.

[0027] like Figures 1 to 9As shown, in a specific embodiment, a limiting frame 23 is vertically slidably provided on the side wall of the top rod 21, and a limiting plate 231 is also installed on the top rod 21. A limiting spring 232 is sleeved on the side wall of the top rod 21 between the limiting plate 231 and the limiting frame 23. One end of the limiting spring 232 is engaged with the side wall of the limiting frame 23, and the other end of the limiting spring 232 is engaged with the side wall of the limiting plate 231. The limiting spring 232 is used to drive the ball 211 at the end of the top rod 21 to conform to the surface of the guide block 22. The limiting frame 23 and the limiting plate 231 limit the movement range of the top rod 21, and the limiting spring 232 provides a continuous contact elastic force, which can ensure that the ball 211 is always in close contact with the guide block 22, ensuring the reliability of the support and falling action of the support plate 2.

[0028] like Figures 1 to 9 As shown, further, a collar 24 is installed on the side wall of the limiting frame 23. A limiting rod 241 is movably installed through the collar 24. Limiting seats 242 are installed at both ends of the limiting rod 241. The limiting seats 242 are installed on the side wall of the frame 1. A connecting plate 243 is installed on the side wall of the collar 24, and the connecting plate 243 is fitted against the side wall of the frame 1. Several pairs of bolt holes are opened on the side wall of the frame 1, and the connecting plate 243 and the frame 1 are connected by locking bolts 244. The collar 24 and the limiting rod 241 limit the movement direction of the limiting frame 23. The connecting plate 243 and the locking bolts 244 realize the adjustable positioning of the limiting frame 23, which can adapt to the support requirements of piston assemblies of different specifications and improve the versatility of the equipment.

[0029] Example 3: The difference between the above embodiments and this embodiment is that: Figures 1 to 9 As shown, a connecting pipe 31 is installed between a pair of compression chambers 3, with one end of the connecting pipe 31 connected to the negative pressure chamber 323. A connecting pipe 311 is installed on the connecting pipe 31, and the end of the connecting pipe 311 is connected to the oil injection port of the hydraulic cylinder. A pressure gauge 34 and a pressure relief valve 341 are also installed on the compression chamber 3, and the pressure gauge 34 and the pressure relief valve 341 are respectively connected to the negative pressure chamber 323. The connecting pipe 31 and the connecting pipe 311 achieve a stable connection between the negative pressure chamber 323 and the oil injection port of the hydraulic cylinder. The pressure gauge 34 can monitor the negative pressure status in real time, and the pressure relief valve 341 facilitates pressure reset after assembly, which can improve the accuracy of negative pressure control and operational safety.

[0030] like Figures 1 to 9As shown, in a specific embodiment, a pressure relief chamber 321 is formed between the other end of the piston 32 and the compression cover 3. An exhaust pipe 322 is installed inside the pressure relief chamber 321, and the exhaust pipe 322 movably passes through the frame 1. The pressure relief chamber 321 and the exhaust pipe 322 can balance the air pressure inside the compression cover 3 when the piston 32 moves, avoid pressure accumulation in the pressure relief chamber 321 from affecting the sliding of the piston 32, and ensure the stability of the negative pressure generation in the negative pressure chamber 323.

[0031] like Figures 1 to 9 As shown, the synchronizing rod 33 and the compression cover 3 are movably connected. A side plate 332 is installed at the end of the synchronizing rod 33, and the side plate 332 is connected to the side wall of the guide block 22. A return spring 331 is sleeved on the side wall of the synchronizing rod 33 inside the negative pressure chamber 323. One end of the return spring 331 is engaged with the side wall of the piston 32, and the other end of the return spring 331 is engaged with the side wall of the compression cover 3. The side plate 332 ensures a reliable connection between the synchronizing rod 33 and the guide block 22, and the return spring 331 can realize the automatic reset of the piston 32 and the synchronizing rod 33 without additional drive, thus improving the efficiency of the equipment's cyclic assembly.

[0032] The implementation principle of the horizontal cylinder mounting mechanism for hydraulic cylinder production of the present invention is as follows: First, before assembly, the hydraulic cylinder body and piston assembly to be assembled must be placed between the fixed frame 12 and the movable frame 121 of the frame 1, respectively. At this time, the support plate 2 is in a raised state under the support of the top rod 21, and its top is in contact with the bottom of the piston assembly, which plays an auxiliary support role and prevents sagging or displacement caused by the long length of the piston assembly. Then, the controller 14 starts the clamping assembly 15: the drive motor 156 drives the turntable 154 to rotate. Since the distance from each point on the guide groove 155 to the center of the turntable 154 is different, when the turntable 154 rotates, it will drive the clamping rod 151 to slide relative to the slide groove 153 through the guide groove 155, thereby clamping and fixing the two ends of the hydraulic cylinder body and the piston assembly to ensure that their axes are aligned.

[0033] Next, the controller 14 controls the hydraulic push rod 13 to start. The hydraulic push rod 13 pushes the moving frame 121 along the slide rod 122 towards the fixed frame 12 via the bracket 131, thereby driving the piston assembly into the hydraulic cylinder body. During this process, the guide block 22, which is connected to the moving frame 121 via the synchronous frame 222, will slide synchronously. When the piston assembly is about to be assembled, the ball bearing 211 at the bottom of the push rod 21 will slide onto the ramp 221 at the end of the guide block 22. As the guide block 22 continues to slide, the ramp 221 will gradually reduce the height of the push rod 21, causing the support plate 2 to fall automatically, avoiding interference between the support plate 2 and the clamping assembly 15 or the assembled parts.

[0034] Simultaneously, as the guide block 22 slides, it drives the synchronizing rod 33 to move synchronously via the side plate 332. The synchronizing rod 33 then pushes the piston 32 inside the compression cover 3 to slide. Since the cross-sectional area of ​​the piston 32 is larger than that of the piston assembly, during the movement of the piston 32, the increase in volume of the negative pressure chamber 323 is greater than the decrease in volume of the chamber corresponding to the hydraulic cylinder oil inlet, thus creating a negative pressure state within the negative pressure chamber 323. This negative pressure is transmitted to the hydraulic cylinder oil inlet through the connecting pipe 31 and the connecting pipe 311, causing one end of the piston assembly to be pushed by the moving frame 121 and the other end to be suctioned by the negative pressure. The two work together to help the piston assembly smoothly and steadily enter the hydraulic cylinder body, reducing assembly resistance.

[0035] During assembly, the operator can monitor the pressure changes in the negative pressure chamber 323 in real time using the pressure gauge 34 on the compression cover 3. If the pressure remains stable and within the preset range, it indicates that the sealing performance between the hydraulic cylinder body and the piston assembly is good; if the pressure rises abnormally, it indicates that there may be leakage caused by improper installation of the seals or damage to the surface of the components, and the machine should be stopped and inspected in time. After assembly, the controller 14 controls the hydraulic push rod 13 to stop working, and then opens the pressure relief valve 341 to restore the pressure in the negative pressure chamber 323 to atmospheric pressure. The return spring 331 will push the piston 32 and the synchronizing rod 33 to reset, and the clamping assembly 15 will release the fixation of the hydraulic cylinder, completing the entire cylinder assembly process.

Claims

1. A horizontal cylinder loading mechanism for hydraulic cylinder production, comprising a frame (1), characterized in that: A fixed frame (12) is installed at one end of the frame (1), and a movable frame (121) is slidably provided at the other end of the frame (1). A clamping assembly (15) is installed on the fixed frame (12) and the movable frame (121). The clamping assembly (15) is used to clamp the hydraulic cylinder and the piston assembly. The frame (1) has a vertically mounted support plate (2) at the bottom, and a top rod (21) is threaded onto the bottom of the support plate (2). The frame (1) has a guide block (22) that slides synchronously with the moving frame (121), and a ramp (221) is provided at the end of the guide block (22). The guide block (22) is slidably connected to the top rod (21). The ramp (221) assists the support plate (2) to fall automatically, preventing interference with the clamping assembly (15). A pair of compression covers (3) are installed inside the frame (1). A piston (32) is slidably arranged inside the compression cover (3). A negative pressure chamber (323) is provided at one end of the piston (32). The negative pressure chamber (323) is connected to the oil injection port of the hydraulic cylinder. A synchronizing rod (33) is installed on the piston (32). The end of the synchronizing rod (33) is connected to the guide block (22). The cross-sectional area of ​​the piston (32) is larger than the cross-sectional area of ​​the piston assembly. During the movement of the piston (32), the volume of the negative pressure chamber (323) increases more than the volume of the chamber corresponding to the oil injection port of the hydraulic cylinder decreases, thereby causing the negative pressure chamber (323) to generate a negative pressure state, ensuring that one end of the piston assembly is pushed and the other end is suctioned, thus assisting in assembly.

2. The horizontal cylinder mounting mechanism for hydraulic cylinder production according to claim 1, characterized in that, The bottom of the frame (1) is equipped with a base plate (11), and a number of pairs of support legs (111) are installed on the bottom of the base plate (111). A pad (112) is installed on the bottom of the support legs (111), and an anti-slip pad is provided on the bottom of the pad (112). A number of reinforcing ribs (113) are installed on the side wall of the base plate (11) and the frame (1). The reinforcing ribs (113) are triangular, and mounting holes (114) are opened on the base plate (11) between the reinforcing ribs (113).

3. The horizontal cylinder mounting mechanism for hydraulic cylinder production according to claim 1, characterized in that, A slide rod (122) is installed through the movable frame (121). A positioning frame (123) is installed at both ends of the slide rod (122). The positioning frame (123) is installed on the frame (1). A fixing plate (132) is installed on the side wall of the frame (1). A hydraulic push rod (13) is installed on the fixing plate (132). A bracket (131) is installed at the output end of the hydraulic push rod (13). The end of the bracket (131) is connected to the side wall of the movable frame (121). A controller (14) is also installed on the side wall of the frame (1). The controller (14) is used to control the hydraulic push rod (13) and the clamping assembly (15).

4. The horizontal cylinder mounting mechanism for hydraulic cylinder production according to claim 1, characterized in that, The clamping assembly (15) includes a clamping rod (151) and a drive motor (156) that slide relative to each other. A slider (152) is installed on the clamping rod (151). The slider (152) is slidably disposed in a groove (153) opened on the fixed frame (12), and the groove (153) is in a vertical state. An L-shaped frame (157) is installed on the housing of the drive motor (156). The L-shaped frame (157) is used to position the drive motor (156). A turntable (154) is installed at the output end of the drive motor (156), and a guide groove (155) is installed on the turntable (154). The distance from each point on the guide groove (155) to the center of the turntable (154) is different, and the guide groove (155) is slidably connected to the clamping rod (151).

5. A horizontal cylinder mounting mechanism for hydraulic cylinder production according to claim 1, characterized in that, The bottom of the pallet (2) is fitted with a top rod (21) by screwing. A ball bearing (211) is installed at the bottom of the top rod (21). The end of the ball bearing (211) is slidably connected to the surface of the guide block (22). A timing frame (222) is installed on the side wall of the guide block (22). The timing frame (222) is connected to the moving frame (121).

6. A horizontal cylinder mounting mechanism for hydraulic cylinder production according to claim 5, characterized in that, The top rod (21) is vertically slidably provided with a limit frame (23) on its side wall. A limit plate (231) is also installed on the top rod (21). A limit spring (232) is sleeved on the side wall of the top rod (21) between the limit plate (231) and the limit frame (23). One end of the limit spring (232) is engaged with the side wall of the limit frame (23), and the other end of the limit spring (232) is engaged with the side wall of the limit plate (231). The limit spring (232) is used to drive the ball (211) at the end of the top rod (21) to fit against the surface of the guide block (22).

7. A horizontal cylinder mounting mechanism for hydraulic cylinder production according to claim 6, characterized in that, The side wall of the limiting frame (23) is equipped with a collar (24), and a limiting rod (241) is movably installed through the collar (24). Limiting seats (242) are installed at both ends of the limiting rod (241). The limiting seats (242) are installed on the side wall of the frame (1). A connecting plate (243) is installed on the side wall of the collar (24), and the connecting plate (243) is fitted to the side wall of the frame (1). The side wall of the frame (1) has several pairs of bolt holes, and the connecting plate (243) and the frame (1) are screwed together by locking bolts (244).

8. A horizontal cylinder mounting mechanism for hydraulic cylinder production according to claim 1, characterized in that, A connecting pipe (31) is installed between a pair of compression covers (3), and one end of the connecting pipe (31) is connected to the negative pressure chamber (323). A connecting pipe (311) is installed on the connecting pipe (31), and the end of the connecting pipe (311) is connected to the oil injection port of the hydraulic cylinder. A pressure gauge (34) and a pressure relief valve (341) are also installed on the compression cover (3), and the pressure gauge (34) and the pressure relief valve (341) are connected to the negative pressure chamber (323) respectively.

9. A horizontal cylinder mounting mechanism for hydraulic cylinder production according to claim 1, characterized in that, The other end of the piston (32) forms a pressure relief chamber (321) between the compression cover (3) and the pressure relief chamber (321) is equipped with an exhaust pipe (322), which movably passes through the frame (1).

10. A horizontal cylinder mounting mechanism for hydraulic cylinder production according to claim 1, characterized in that, The synchronizing rod (33) is movably connected to the compression cover (3). A side plate (332) is installed at the end of the synchronizing rod (33), and the side plate (332) is connected to the side wall of the guide block (22). A reset spring (331) is sleeved on the side wall of the synchronizing rod (33) inside the negative pressure chamber (323). One end of the reset spring (331) is clamped on the side wall of the piston (32), and the other end of the reset spring (331) is clamped on the side wall of the compression cover (3).

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