Novel rapid band-type brake oil cylinder structure

Abstract

The utility model discloses a novel rapid band-type brake oil cylinder structure which comprises a cylinder body, a piston rod is arranged in the middle of the cylinder body in a telescopic mode, a cylinder cover is arranged on one side of the cylinder body, throttling grooves are formed in the cylinder body and the cylinder cover, and throttling rings are arranged on the piston rod and the throttling grooves in the two sides in an inserted and matched mode. The cylinder body and the cylinder cover are communicated with the throttling grooves and provided with oil ports, the cylinder body and the cylinder cover are symmetrically provided with control oil ways, the control oil ways on the two sides are provided with a throttling valve and a one-way valve respectively, and when the piston rod runs to the position close to the final position, the running speed of the piston rod is slowed down under the action of the throttling valve, and then the piston rod is stopped from running. And during reverse starting, oil inlet of the oil cylinder can increase the starting pressure of the piston rod through the one-way valve, so that the situation that the piston rod cannot move due to insufficient starting pressure is prevented, the starting time is shortened, the impact sound is small when the equipment is opened and closed in place, the opening and closing starting is fast, and the operation time is short.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder equipment technology, and in particular to a novel fast-acting brake cylinder structure. Background Technology

[0002] With the continuous development of injection molding machines, large, high-speed, and precision injection molding machines mostly adopt a two-platen clamping structure. Compared with the traditional three-platen injection molding machine of the same tonnage, it has advantages such as smaller footprint, more precise clamping force, and better platen parallelism. However, the clamping structures of two-platen and three-platen injection molding machines differ. Depending on the mold, the distance between the movable and fixed platens needs to be adjusted to clamp the mold. In a three-platen machine, the guide rail adjustment section has a helical thread, which is adjusted to different positions by rotating four adjusting nuts mounted on the tail plate. In contrast, the guide rail adjustment section of a two-platen machine has a ring-shaped thread, and the nuts are split in two halves. Depending on the mold... The movable plate is first moved close to the mold, the two halves of the nut are closed, and then the high-pressure cylinder injects oil to clamp the mold. The closure of the two halves of the nut is accomplished by the brake cylinder. In this way, a dry cycle of a two-platen machine requires more opening and closing of the brake cylinder than a dry cycle of a three-platen machine. As a result, the dry cycle of a two-platen machine is longer than that of a three-platen machine. To reduce the dry cycle time of a two-platen machine, reducing the opening and closing time of the brake cylinder is a crucial aspect. However, when traditional brake cylinders are working, once the speed is increased, the noise when the brake is fully open or closed is extremely loud and unacceptable. At the same time, the noise is quiet when the brake is fully open or closed, but the opening and closing time is very long. It is difficult to achieve both goals simultaneously, resulting in poor practicality. Utility Model Content

[0003] The purpose of this invention is to provide a novel fast-acting brake cylinder structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel fast-acting brake cylinder structure, comprising a cylinder body, a piston rod telescopically mounted in the middle of the cylinder body, a cylinder cover on one side of the cylinder body, throttling grooves inside both the cylinder body and the cylinder cover, throttling rings inserted into and cooperating with the throttling grooves on both sides of the piston rod, oil ports provided in both the cylinder body and the cylinder cover communicating with the throttling grooves, and control oil circuits symmetrically provided in both the cylinder body and the cylinder cover, with a throttling valve and a one-way valve respectively provided in the control oil circuits on both sides.

[0005] Preferably, the cylinder body has a docking groove on one side, and the cylinder cover is fitted with the docking groove to form a docking platform. The outer circular wall of the docking platform has a fixing groove, and a sealing ring is fitted inside the fixing groove.

[0006] Preferably, the oil port connection is equipped with an oil pipe connector.

[0007] Preferably, one end of the piston rod is fitted with a contact ring that fits against the inner wall of the cylinder. The outer circular wall of the contact ring is provided with several fixing grooves. A piston sealing ring is fitted inside one of the fixing grooves. Wear-resistant rings are fitted on both sides of the piston sealing ring.

[0008] Preferably, the cylinder head has several fixing grooves in the middle, and the fixing grooves are provided with a wear-resistant ring, a piston rod sealing ring, a piston rod oil seal and a dustproof sealing ring from the inside to the outside.

[0009] Preferably, the cylinder head is provided with plugs for the control oil passages on both sides, and the cylinder head and the cylinder block are fixedly connected by bolts.

[0010] The beneficial effects of this utility model are as follows: When the piston rod moves to near the end position, the piston rod speed is slowed down by the throttle valve, thereby reducing the impact noise when the brake is in place. When starting in reverse, the oil inlet of the cylinder can increase the starting pressure of the piston rod through the check valve to prevent the piston rod from not moving due to insufficient starting pressure, thereby shortening the starting time. This makes the impact noise of the equipment low when the brake is in place, and the starting time of the brake is fast and the running time is short, increasing the practicality of the equipment. Attached Figure Description

[0011] Figure 1 This is a first-view perspective three-dimensional structural diagram of an embodiment of the present utility model;

[0012] Figure 2 This is a second-view perspective three-dimensional structural diagram of an embodiment of the present utility model;

[0013] Figure 3 This is a cross-sectional three-dimensional structural diagram of the oil ports on both sides in an embodiment of this utility model;

[0014] Figure 4 This is a cross-sectional three-dimensional structural diagram of the control oil circuits on both sides in an embodiment of this utility model.

[0015] In the diagram: 1. Cylinder block; 101. Connecting groove; 2. Piston rod; 21. Contact ring; 22. Fixed groove two; 23. Piston seal ring one; 24. Wear ring one; 3. Cylinder head; 31. Fixed groove three; 32. Wear ring two; 33. Piston rod seal ring two; 34. Piston rod oil seal; 35. Dustproof seal ring; 4. Throttling groove; 5. Throttling ring; 6. Oil port; 7. Control oil circuit; 8. Throttling valve; 9. Check valve; 10. Fixed groove one; 11. Sealing ring; 12. Oil pipe joint; 13. Connecting platform; 14. Plug; 15. Bolt. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1 to 4 This utility model provides a novel fast-acting brake cylinder structure, including a cylinder body 1, a piston rod 2 telescopically mounted in the middle of the cylinder body 1, a cylinder head 3 on one side of the cylinder body 1, throttling grooves 4 inside both the cylinder body 1 and the cylinder head 3, and throttling rings 5 ​​inserted into and cooperating with the throttling grooves 4 on both sides. Oil ports 6 are provided on both the cylinder body 1 and the cylinder head 3 connecting to the throttling grooves 4. Control oil circuits 7 are symmetrically arranged on both the cylinder body 1 and the cylinder head 3, with throttling valves 8 and one-way valves 9 respectively on both sides of the control oil circuits 7. Oil is supplied to this device through an external oil supply device. When oil enters from the oil port 6 on one side of the cylinder head 3... When oil returns from port 6 on one side of cylinder 1, the hydraulic oil pushes the piston rod 2 to shorten. When the throttle ring 5 on one side of piston rod 2 is engaged with the throttle groove 4 of cylinder 1, the hydraulic oil cannot be directly guided to port 6 on one side of cylinder 1, and the one-way valve 9 on that side is also closed. The hydraulic oil cannot be guided from the control oil circuit 7 on that side to port 6 on one side of cylinder 1. It can only be guided from the control oil circuit 7 on the throttle valve 8 to port 6 on one side of cylinder 1. By controlling the opening size of the throttle valve 8, the impact noise when the piston rod 2 shortens is reduced, the working environment is optimized, and the impact noise is avoided from affecting the physical and mental health of the operator and the surrounding environment.

[0018] When oil enters through port 6 on one side of cylinder 1 and returns through port 6 on one side of cylinder head 3, the piston rod 2 is extended. At the start, the throttle ring 5 on one side of piston rod 2 and the throttle groove 4 on cylinder 1 are still in a plug-in engagement state. At this time, the hydraulic oil can not only be directly guided to the end face of the throttle ring 5 on the same side, but also push open the check valve 9 to quickly reach the periphery of the throttle ring 5 on that side. The piston rod 2 can quickly extend outward to achieve rapid movement.

[0019] When the piston rod 2 extends to near its limit position, the throttle ring 5 on the other side of the piston rod 2 engages with the throttle groove 4 of the cylinder head 3. The hydraulic oil on the side of the cylinder body 1 cannot directly reach the oil port 6 on the side of the cylinder head 3. Instead, it can only be guided from the oil passage 7 on the side of the throttle valve 8 to the oil port 6 on the side of the cylinder head 3. By adjusting the opening size of the throttle valve 8 on this side, the impact sound when the piston rod 2 extends can be controlled.

[0020] When oil enters through port 6 on one side of cylinder head 3 and returns through port 6 on one side of cylinder body 1, the piston rod 2 is shortened. At the start, the throttle ring 5 on the other side of piston rod 2 and the throttle groove 4 on cylinder head 3 are still in a plug-in engagement state. At this time, the hydraulic oil can not only be directly guided to the end face of the throttle ring 5 on the same side, but also push open the one-way valve 9 to quickly reach the periphery of the throttle ring 5 on that side. The piston rod 2 can quickly shorten inward to achieve rapid movement, improve the movement speed of the equipment, reduce its operating noise, and increase the practicality of the equipment.

[0021] like Figure 3 and Figure 4 As shown, specifically, the cylinder body 1 has a docking groove 101 on one side, and the cylinder cover 3 is fitted with the docking groove 101 to form a docking platform 13. The outer circular wall of the docking platform 13 has a fixing groove 10, and a sealing ring 11 is fitted inside the fixing groove 10. By inserting the docking platform 13 of the cylinder cover 3 into the docking groove 101 of the cylinder body 1 and fixing it with bolts 15, the installation of this equipment can be quickly realized, improving production efficiency, and the sealing ring 11 ensures the sealing of the connection.

[0022] Specifically, the oil port 6 is connected to an oil pipe joint 12, which connects the two oil pipe joints 12 to an external oil supply device through an oil pipe, thereby realizing the oil supply and return to the oil cylinder.

[0023] Specifically, one end of the piston rod 2 is fitted with a contact ring 21 that fits against the inner wall of the cylinder 1. The outer circular wall of the contact ring 21 is provided with several fixing grooves 22. A piston sealing ring 23 is fitted inside one of the fixing grooves 22. Wear-resistant rings 24 are fitted on both sides of the piston sealing ring 23. By fitting the piston sealing ring 23 and the wear-resistant ring 24 inside the three fixing grooves 22 on the outer circular wall of the contact ring 21 of the piston rod 2, the reliability of the piston rod 2's extension and retraction within the cylinder 1 is ensured.

[0024] Specifically, the cylinder head 3 has several fixing grooves 31 in the middle. The fixing grooves 31 are provided with a wear-resistant ring 32, a piston rod 2 sealing ring 11, a piston rod oil seal 34 and a dustproof sealing ring 35 in sequence from the inside to the outside. By fitting the wear-resistant ring 32, piston rod 2 sealing ring 11, piston rod oil seal 34 and dustproof sealing ring 35 into the four fixing grooves 31 inside the cylinder head 3, the sealing performance and reliability of the piston rod 2 during extension and retraction are ensured.

[0025] Specifically, the cylinder head 3 is connected to the control oil circuits 7 on both sides with plugs 14. The cylinder head 3 and the cylinder body 1 are fixedly connected by bolts 15. The plugs 14 are used to block one end of the control oil circuit 7, thereby ensuring that the hydraulic oil flows through the check valve 9 and the regulating valve to control the extension and retraction of the piston rod 2.

[0026] The working principle of this utility model is as follows: When in use, oil is supplied to this device through an external oil supply device. When oil enters through port 6 on one side of cylinder head 3 and returns through port 6 on one side of cylinder body 1, the hydraulic oil pushes the piston rod 2 to shorten. When the throttling ring 5 on one side of piston rod 2 is inserted and engaged with the throttling groove 4 on the cylinder body 1, the hydraulic oil cannot be directly guided to port 6 on one side of cylinder body 1, and the one-way valve 9 on that side is also in a closed state. The hydraulic oil cannot be guided from the control oil circuit 7 on that side to port 6 on one side of cylinder body 1. It can only be guided from the control oil circuit 7 on the side of throttling valve 8 to port 6 on one side of cylinder body 1. By controlling the opening size of throttling valve 8, the impact noise when piston rod 2 shortens is reduced, the working environment is optimized, and the impact noise is avoided from affecting the physical and mental health of the operator and the surrounding environment.

[0027] 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 or 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. A novel quick-action brake holding oil cylinder structure, comprising a cylinder body (1), a piston rod (2) is arranged in the middle of the cylinder body (1) in an extendable manner, and a cylinder cover (3) is arranged on one side of the cylinder body (1), characterized in that, The cylinder (1) and the cylinder cover (3) are internally provided with throttle grooves (4), the piston rod (2) is in plug-in fit with the throttle grooves (4) on both sides and is provided with a throttle ring (5), the cylinder (1) and the cylinder cover (3) are provided with oil ports (6) in communication with the throttle grooves (4), and the cylinder (1) and the cylinder cover (3) are symmetrically provided with control oil ways (7), the control oil ways (7) on both sides are respectively provided with throttle valves (8) and check valves (9).

2. The novel quick-acting band brake oil cylinder structure according to claim 1, characterized in that; One side of the cylinder (1) is provided with a butt joint groove (101), the cylinder cover (3) is in plug-in fit with a butt joint table (13) of the butt joint groove (101), and the outer circular wall of the butt joint table (13) is provided with a fixed groove one (10).

3. The novel quick-action band brake oil cylinder structure according to claim 1, characterized in that; The oil port (6) is connected with an oil pipe joint (12).

4. The novel quick-action band brake oil cylinder structure of claim 1, characterized in that; One end of the piston rod (2) is in fit with the inner wall of the cylinder (1) and is provided with a contact ring (21), the outer circular wall of the contact ring (21) is provided with a plurality of fixed grooves two (22), the fixed grooves two (22) on one side are internally sleeved with a piston sealing ring one (23), and the piston sealing ring one (23) is sleeved with a wear-resistant ring one (24) on both sides.

5. The novel quick-action band brake oil cylinder structure according to claim 1, characterized in that; The cylinder cover (3) is provided with a plurality of fixed grooves three (31) in the middle, the fixed grooves three (31) are sequentially provided with a wear-resistant ring two (32), a piston rod sealing ring two (33), a piston rod oil seal (34) and a dustproof sealing ring (35) from inside to outside.

6. The novel quick-action band brake oil cylinder structure according to claim 1, characterized in that; The cylinder cover (3) is provided with a plug (14) in communication with the control oil ways (7) on both sides, and the cylinder cover (3) and the cylinder (1) are fixedly connected through bolts (15).

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