Bending machine oil cylinder with radial stable structure

Abstract

The utility model relates to the technical field of bending machine oil cylinders, in particular to a bending machine oil cylinder with a radial stable structure. Comprising a cylinder body, the cylinder body is connected with a front end cover and a rear end cover, the cylinder body is slidably connected with a piston, the rear end cover is provided with a sliding groove, the piston is slidably connected with the sliding groove, the cylinder body is connected with a connecting frame, the connecting frame is rotatably connected with a rotating shaft, the rotating shaft is connected with a gear, the connecting frame is provided with a movable groove, and the gear is matched with the movable groove; the gear is meshed with the rack, the rack and the limiting rod are jointly connected with a limiting frame, the limiting frame is provided with a limiting groove, and the piston is slidably connected with the limiting groove; the connecting frame is connected with a limiting device which is used for limiting rotation of the gear. By the adoption of the scheme, it can be guaranteed that the piston moves along an ideal straight line, the bending position and angle are more accurate, and therefore the quality and consistency of products are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machine cylinders, and particularly relates to a bending machine cylinder with a radial stable structure. Background Art

[0002] A bending machine is a machine capable of bending a sheet. An oil cylinder generally refers to a hydraulic cylinder. A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion or swinging motion. It has a simple structure and reliable operation. The oil cylinder is the core component of the bending machine.

[0003] After retrieval, a Chinese utility model patent (publication number: CN217976850U) discloses a bending machine cylinder with O-ring seal protection, including a cylinder body, a front end cover, a rear end cover, an oil interface, a piston body, a piston rod, an O-ring, a support and limit mechanism, a strengthening component and other structures. In this solution, by setting a support and limit mechanism on the O-ring, the damage of the O-ring is avoided, the normal use of the O-ring can be fully guaranteed, the sealing effect of the oil cylinder is improved, and the normal operation of the oil cylinder is ensured.

[0004] However, through the exploration of the inventor, it is found that this technical solution still has at least the following defects:

[0005] During the bending process of the existing bending machine cylinder, the movement of the cylinder piston may deviate from the ideal straight line direction, resulting in the accuracy of the bending angle and position being affected, the linearity of the oil cylinder cannot be ensured, and the stability and reliability of the equipment are affected. Content of the Utility Model

[0006] The utility model aims to provide a bending machine cylinder with a radial stable structure to solve the problems raised in the above background art.

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

[0008] A bending machine cylinder with a radial stable structure includes a cylinder body. The cylinder body is connected with a front end cover, the cylinder body is movably connected with a rear end cover, the cylinder body is slidably connected with a piston, a chute is opened on the rear end cover, the piston is slidably connected with the chute, the cylinder body is connected with a connecting frame, the connecting frame is rotatably connected with a rotating shaft, the rotating shaft is connected with a gear, a movable groove is opened on the connecting frame, the gear is matched with the movable groove, a rack and a guide rod are slidably connected to the connecting frame, the gear is meshed with the rack, the rack and the guide rod are jointly connected with a limiting frame, a limiting groove is opened on the limiting frame, and the piston is slidably connected with the limiting groove;

[0009] The connecting frame is connected with a limiting device for restricting the rotation of the gear.

[0010] Preferably, the limiting device includes a bolt, the rotating shaft is connected with a turntable, the turntable and the connecting frame are jointly provided with a fixing hole, and the bolt is threadedly connected with the side wall of the fixing hole.

[0011] Preferably, a sealing ring is sleeved on the piston, and the sealing ring is connected with an arc-shaped reinforcing member.

[0012] Preferably, the front end cover is connected with a sealing gasket, and the sealing gasket abuts against the cylinder block.

[0013] Preferably, the front end cover is connected with an oil interface.

[0014] Preferably, the rear end cover and the cylinder block are jointly threadedly connected with bolts.

[0015] The beneficial effects of this technical solution compared with the prior art:

[0016] (1) Through the mutual cooperation of structures such as the connecting frame, rotating shaft, gear, rack, limiting frame and limiting groove in this solution, it is ensured that the piston moves along an ideal straight line, making the bending position and angle more accurate, thereby improving the quality and consistency of the product, reducing processing interruptions and waste caused by precision problems, and thus improving production efficiency and service life. Through the mutual cooperation of the gear and the rack, the height of the limiting frame can be adjusted according to the falling distance of the bending oil cylinder, which is more flexible and makes the practicability and flexibility higher. Through the setting of the guide rod, the position of the limiting frame is restricted, playing a role of secondary positioning and making the limiting frame more stable.

[0017] (2) By setting the limiting device, after the limiting frame is adjusted to the required position, the limiting device is used to prevent the gear from continuing to move, providing stable positioning for the gear and preventing the gear from rotating accidentally under the action of external interference forces (such as vibration, impact, etc.).

[0018] (3) By setting the sealing ring and the arc-shaped reinforcing member, it is avoided that the sealing ring is extruded into the fitting gap due to extrusion, improving the sealing effect of the oil cylinder and ensuring the normal operation of the oil cylinder. Preventing pressure fluctuations caused by oil leakage, enabling the bending force to be stably output, ensuring the accuracy and quality of the bending operation, and improving the operation reliability and production efficiency of the equipment.

[0019] (4) By setting the sealing gasket, which is made of a soft material, it prevents oil from overflowing from the connection, ensuring the sealing of the oil cylinder and the normal operation of the equipment. Good sealing can avoid pressure fluctuations caused by leakage, making the bending process smoother and more accurate.

[0020] (5) By setting the oil interface, it provides a channel for the inlet and outlet of the oil, ensuring that the oil can enter and exit the oil cylinder quickly and smoothly, meeting the power requirements for the operation of the bending machine.

[0021] (6) By setting bolts, when parts inside the oil cylinder, such as pistons, sealing rings, etc., are worn, damaged or aged, the detachable rear end cover facilitates maintenance personnel to disassemble it, inspect, replace or repair these parts, saving time and cost. It enables maintenance personnel to conveniently clean the impurities inside the oil cylinder, keep the oil cylinder clean, and extend the service life of the oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the front partial sectional view of the present utility model;

[0023] Figure 2 is the front sectional view of the present utility model;

[0024] Figure 3 is the top sectional view of the present utility model;

[0025] Figure 4 is the right sectional view of the gear provided by the present utility model;

[0026] Figure 5 is the right view of the turntable provided by the present utility model;

[0027] Reference numerals: front end cover 1, cylinder block 2, guide rod 3, rack 4, connecting frame 5, rotating shaft 6, rear end cover 7, limiting frame 8, piston 9, oil interface 10, gear 11, movable groove 12, pin 13, turntable 14, fixing hole 15, sealing gasket 16, sealing ring 17, arc-shaped reinforcing member 18, bolt 19, sliding groove 20, limiting groove 21. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present utility model will be further described in detail below in conjunction with the drawings and embodiments:

[0029] As Figures 1-5A bending machine oil cylinder with a radially stable structure as shown includes a cylinder block 2. One end of the cylinder block 2 is connected to a front end cover 1, and the other end of the cylinder block 2 is movably connected to a rear end cover 7. A piston 9 is slidably connected to the inner wall of the cylinder block 2. A chute 20 is provided on the rear end cover 7, and the piston 9 is slidably connected to the chute 20. A connecting frame 5 is connected around the cylinder block 2. A rotating shaft 6 is rotatably connected to the connecting frame 5. There are two groups of rotating shafts 6, which are symmetrically arranged. Two groups of rotating shafts 6 are respectively connected to gears 11. An activity slot 12 is provided on the connecting frame 5, and the gears 11 cooperate with the activity slot 12. A rack 4 and a limiting rod are slidably connected around the connecting frame 5. There are two groups of the rack 4 and the limiting rod respectively, which are symmetrically arranged. The gears 11 are meshed with the rack 4. The rack 4 and the bottom of the limiting rod are jointly connected to a limiting frame 8. A limiting slot 21 is provided on the limiting frame 8, and the piston 9 is slidably connected to the limiting slot 21. The connecting frame 5 is connected with a limiting device for restricting the rotation of the gear 11. The limiting device includes a pin 13. A turntable 14 is connected to the rotating shaft 6. The turntable 14 and the connecting frame 5 jointly provide a plurality of fixing holes 15. The pin 13 is threadedly connected to the side wall of any one of the fixing holes 15. When it is necessary to adjust the position of the limiting frame 8, turn the pin 13 until it completely disengages from the turntable 14. At this time, the limiting frame 8 can be pushed in the direction close to or away from the cylinder block 2, so that the rack 4 moves synchronously with the limiting frame 8. Through the meshing setting of the gear 11 and the rack 4, the gear 11 and the rotating shaft 6 rotate accordingly. After adjustment, align the fixing holes 15, then insert the pin 13 and tighten it to fix the gear 11, so as to fix the positions of the rack 4 and the limiting frame 8. The piston 9 can be limited, and the stability is higher.

[0030] As Figures 2-3 shown, a sealing ring 17 is sleeved on the piston 9. An arc-shaped reinforcing member 18 is connected to the inner wall of the sealing ring 17 to prevent the sealing ring 17 from being squeezed into the fitting gap due to extrusion and avoid damage to the sealing ring 17. A sealing gasket 16 is connected between the inside of the front end cover 1 and the contact with the cylinder block 2. The sealing gasket 16 abuts against the cylinder block 2. Under the tight fit of the front end cover 1 and the cylinder block 2, it can prevent the oil from overflowing from the edge. An oil interface 10 is connected to the side wall of the front end cover 1 to provide a channel for the inlet and outlet of the oil. The rear end cover 7 and the cylinder block 2 are jointly threadedly connected with bolts 19. By unscrewing the bolts 19, the rear end cover 7 can be disassembled, which is convenient for maintenance personnel to carry out maintenance or replacement.

[0031] The specific implementation process is as follows:

[0032] During operation, the cylinder block 2 is filled with oil. After the oil enters the cylinder block 2, the oil pressure overcomes the resistance between the piston 9 and the cylinder block 2, pushing the piston 9 downward until the piston 9 moves to the set position. Subsequently, the oil supply stops. When it is necessary to adjust the position of the limit frame 8, first turn the bolt 13 until it completely disengages from the turntable 14. At this time, the limit frame 8 can be pushed in the direction closer to or farther from the cylinder block 2, so that the rack 4 moves synchronously with the limit frame 8. Through the meshing setting of the gear 11 and the rack 4, the gear 11 and the rotating shaft 6 rotate accordingly. After the limit frame 8 reaches the required position, align the fixing holes 15, and then insert and tighten the bolt 13 to fix the gear 11, thereby fixing the positions of the rack 4 and the limit frame 8. When it is necessary to repair the oil cylinder, unscrew the bolt 13, push the limit frame 8 in the direction away from the cylinder block 2 until the rack 4 completely disengages from the connecting frame 5 of the guide rod 3, and then unscrew the bolt 19 to remove the rear end cover 7, and the maintenance personnel can repair or replace the interior.

[0033] The above are only the embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can still be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A bending machine cylinder with a radially stable structure, characterized in that: The invention comprises a cylinder body (2), wherein the cylinder body (2) is connected with a front end cover (1), the cylinder body (2) is movably connected with a rear end cover (7), the cylinder body (2) is slidably connected with a piston (9), the rear end cover (7) is provided with a slide groove (20), the piston (9) is slidably connected with the slide groove (20), the cylinder body (2) is connected with a connecting frame (5), the connecting frame (5) is rotatably connected with a rotating shaft (6), the rotating shaft (6) is connected with a gear (11), the connecting frame (5) is provided with a movable groove (12), the gear (11) cooperates with the movable groove (12), the connecting frame (5) is slidably connected with a rack (4) and a guide rod (3), the gear (11) is meshed with the rack (4), the rack (4) and the guide rod (3) are jointly connected with a limiting frame (8), the limiting frame (8) is provided with a limiting groove (21), and the piston (9) is slidably connected with the limiting groove (21); The connecting frame (5) is connected to a limiting device, and the limiting device is used to limit the rotation of the gear (11).

2. A bending machine cylinder with a radially stable structure as claimed in claim 1, characterized in that: The limiting device comprises a latch (13), the rotating shaft (6) is connected to a rotating disk (14), the rotating disk (14) and the connecting frame (5) are provided with a fixing hole (15), and the latch (13) is threadedly connected to a side wall of the fixing hole (15).

3. A bending machine oil cylinder with a radially stable structure as claimed in claim 1, characterized in that: The piston (9) is sleeved with a sealing ring (17), and the sealing ring (17) is connected to an arc-shaped reinforcement member (18).

4. A bending machine oil cylinder with a radially stable structure as claimed in claim 1, characterized in that: The front end cover (1) is connected to a sealing gasket (16), and the sealing gasket (16) is in contact with the cylinder body (2).

5. The hydraulic cylinder for a bending machine with a radially stable structure according to claim 1, characterized in that: The front end cover (1) is connected to an oil interface (10).

6. A bending machine oil cylinder with a radially stable structure as claimed in claim 1, characterized in that: The rear end cover (7) and the cylinder body (2) are threadedly connected with bolts (19).

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