Special fireproof hydraulic machine buffer mechanism

Abstract

The utility model discloses a fireproof special hydraulic machine buffering mechanism which comprises a workbench, an installation frame body is fixedly installed on the workbench, a hydraulic machine body is fixedly installed on the installation frame body, a lower pressing head is fixedly installed on a driving shaft of the hydraulic machine body, and a buffering box is fixedly installed on the workbench. A movable plate is slidably mounted on the buffer box, a downward pressing mold is fixedly connected to the movable plate, a fixing frame is fixedly mounted on the workbench, a sleeve is slidably mounted in the fixing frame, a telescopic rod is arranged in the sleeve in a sleeved mode, and the top of the telescopic rod is fixedly connected with the bottom of the movable plate; and a first buffer spring is arranged outside the sleeve in a sleeving manner. According to the buffering device, the buffering effect is better through cooperation of primary buffering and secondary buffering, meanwhile, the secondary buffering can protect the first buffering spring, and the service life of the first buffering spring can be effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic press equipment, in particular to a buffer mechanism of a fire-resistant special hydraulic press. Background Art

[0002] A hydraulic press is a mechanical device that uses the fluid mechanics of liquid to achieve processing or forming. By injecting liquid into the hydraulic cylinder, the piston above the hydraulic cylinder is pushed by the hydraulic force, thereby transmitting the force to the material to be processed.

[0003] In order to further understand the buffer mechanism of the hydraulic press in the prior art, after searching, the Chinese patent with announcement number: CN220314284U discloses a buffer device for a hydraulic press, including a box body, the middle part of the top wall of the box body is fixedly connected to the hydraulic press body, the inside of the box body is slidably connected to a workbench, two buffer rods are fixedly connected to both ends of the workbench, the upper ends of the buffer rods on both sides penetrate the box body and are fixedly connected to a moving block 1, the middle part of the front and rear sides of the upper end of the workbench is fixedly connected to a mounting block, a chamber is provided inside the mounting block, a moving block 2 is slidably connected to the inside of the chamber, a connecting rod is fixedly connected to the inner side of the moving block 2, and a clamping block is fixedly connected to the two connecting rods at one end close to each other, ventilation holes are provided in the middle of both sides of the box body, an air-cooled box is fixedly connected to the middle of one side of the box body, and a servo motor is fixedly connected to one side of the air-cooled box.

[0004] After exploration and analysis, the patent has the following shortcomings in actual use: although in this patent, the spring 1 cooperates with the moving block 1 and the buffer rod, when the hydraulic press touches the workbench, the workbench will move downward a certain distance to achieve a buffering effect, but when the workbench is under too much pressure, the compression degree of the spring 1 will increase. After working for a long time, the spring 1 is prone to fatigue, thereby reducing the service life of the spring 1 and the buffering effect of the device is deteriorated. Utility Model Content

[0005] Aiming at the technical problem that when the existing workbench is subjected to excessive pressure, the compression degree of the spring will increase, and after long-term work, the spring will easily become fatigued, thereby reducing the service life of the spring and the buffering effect of the device will deteriorate, the utility model provides a buffer mechanism for a fire-resistant special hydraulic press.

[0006] The technical solution adopted by the utility model is: it includes a workbench, a mounting frame is fixedly installed on the workbench, a hydraulic press body is fixedly installed on the mounting frame, a pressing head is fixedly installed on the driving shaft of the hydraulic press body, a buffer box is fixedly installed on the workbench, a movable plate is slidably installed on the buffer box, a pressing mold is fixedly connected to the movable plate, the pressing mold is used in conjunction with the pressing head, a fixing frame is fixedly installed on the workbench, a sleeve is slidably installed in the fixing frame, a telescopic rod is sleeved in the sleeve, the top of the telescopic rod is fixedly connected to the bottom of the movable plate, a first buffer spring is sleeved on the outside of the sleeve, a secondary buffer mechanism is provided in the buffer box, and the secondary buffer mechanism is used to further buffer the hydraulic press body.

[0007] Furthermore, the secondary buffer mechanism includes two groups of sliding rods fixedly installed inside the buffer box, a mounting plate sleeved on the outside of the sliding rods, and a moving block sleeved on the outside of the sliding rods. A second buffer spring is arranged between the mounting plate and the moving block. The second buffer spring is sleeved on the outside of the sliding rods. The moving block and the moving plate are movably connected.

[0008] By adopting the above technical solution, the secondary buffer mechanism can further improve the buffering effect of the mechanism.

[0009] Furthermore, a fixing seat is fixedly installed at the bottom of the movable plate, a connecting rod is rotatably installed on the fixing seat, and a side of the connecting rod away from the fixing seat is rotatably connected to the top of the movable block.

[0010] By adopting the above technical solution, the movable connection between the moving block and the moving plate is achieved.

[0011] Furthermore, a stopper is sleeved on the outside of the slide rod, and two ends of the second buffer spring are fixedly connected to the mounting plate and one side of the stopper respectively, and a buffer block is fixedly connected to the side of the stopper opposite to the moving block.

[0012] By adopting the above technical solution, when the pressing die is subjected to excessive pressure, the secondary buffer mechanism starts to work.

[0013] Furthermore, a motor is fixedly installed on the outside of the buffer box, and the driving shaft of the motor is coaxially fixedly connected with a bidirectional threaded rod. The bidirectional threaded rod is rotatably installed inside the buffer box. The outside of the buffer box is threadedly connected with a connecting plate, and the top of the connecting plate is fixedly connected to the bottom of the mounting plate.

[0014] By adopting the above technical solution, the preload of the second buffer spring can be adjusted.

[0015] Furthermore, a guide rod is fixed inside the buffer box, and the guide rod is slidably connected to the connecting plate.

[0016] By adopting the above technical solution, the stability of the connecting plate during movement is improved.

[0017] Furthermore, the outer surface of the sleeve is provided with a thread, the external thread of the sleeve is connected to an adjusting block, the first buffer spring is arranged between the movable plate and the adjusting block, a limiting groove is provided at the bottom of the sleeve, a limiting block is slidably installed in the limiting groove, and the limiting block is fixedly connected to the fixing frame.

[0018] By adopting the above technical solution, the preload of the first buffer spring can be adjusted.

[0019] Furthermore, a slide groove is provided on the buffer box, a slider is slidably connected in the slide groove, and the slider is fixedly connected to the movable plate.

[0020] By adopting the above technical solution, the stability of the pressing die and the movable plate during displacement is improved.

[0021] The beneficial effects of the utility model are as follows: a spring damper is formed by cooperating with a first buffer spring through a telescopic rod and a sleeve to perform primary buffering on a hydraulic press, and then a second buffer spring is deformed to form a secondary buffer through a fixed seat, a connecting rod and a moving block in cooperation with a stopper; the primary buffer cooperates with the secondary buffer to achieve a better buffering effect, and at the same time, the secondary buffer can protect the first buffer spring, and can effectively increase the service life of the first buffer spring; and by adjusting the pre-pressure of the first buffer spring and the second buffer spring, the applicable scope of the buffer mechanism is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the buffer box in the utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the buffer box of the utility model;

[0025] Figure 4 For attachment Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 It is a structural schematic diagram of the sleeve and the adjusting block in the utility model;

[0027] Figure 6 It is a structural schematic diagram of the fixing frame and the limiting block in the utility model;

[0028] Figure 7 It is a structural schematic diagram of the buffer box and the slideway in the utility model.

[0029] The numbers in the figure are: 1. workbench; 2. mounting frame; 3. buffer box; 4. motor; 5. hydraulic press body; 6. pressing head; 7. moving plate; 8. pressing die; 9. connecting plate; 10. bidirectional threaded rod; 11. guide rod; 12. fixed frame; 13. telescopic rod; 14. first buffer spring; 15. slider; 16. sleeve; 17. adjustment block; 18. limit groove; 19. limit block; 20. slide groove; 21. mounting plate; 22. fixed seat; 23. connecting rod; 24. slide rod; 25. moving block; 26. buffer block; 27. stop block; 28. second buffer spring. DETAILED DESCRIPTION

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The following is combined with Figure 1-7 The utility model is further described.

[0032] In order to solve the problems existing in the background technology, the present application proposes the following technical scheme: it includes a workbench 1, a mounting frame 2 is fixedly installed on the workbench 1, a hydraulic press body 5 is fixedly installed on the mounting frame 2, the mounting frame 2 provides installation conditions for the hydraulic press body 5, the hydraulic press body 5 is a special refractory hydraulic press, the special refractory hydraulic press is a device specially designed for refractory material molding, a down-pressing head 6 is fixedly installed on the driving shaft of the hydraulic press body 5, a buffer box 3 is fixedly installed on the workbench 1, a movable plate 7 is slidably installed on the buffer box 3, a down-pressing mold 8 is fixedly connected to the movable plate 7, and the down-pressing mold 8 is used in conjunction with the down-pressing head 6.

[0033] The refractory material is placed in the pressing die 8, and the hydraulic press body 5 is started. The driving shaft of the hydraulic press body 5 drives the pressing head 6 to move downward, and the pressing head 6 cooperates with the pressing die 8 to press and form the refractory material.

[0034] A fixing frame 12 is fixedly installed on the workbench 1, and a sleeve 16 is slidably installed in the fixing frame 12. A through hole for installing the sleeve 16 is opened on the upper surface of the fixing frame 12. A telescopic rod 13 is sleeved in the sleeve 16. The top of the telescopic rod 13 is fixedly connected to the bottom of the movable plate 7. A first buffer spring 14 is sleeved on the outside of the sleeve 16.

[0035] The telescopic rod 13 cooperates with the sleeve 16 to form a damper, and then cooperates with the first buffer spring 14 to form a spring damper. The hydraulic press body 5 drives the pressing head 6 to move downward to contact the pressing die 8. The pressing head 6 impacts the pressing die 8, and the pressing die 8 drives the moving plate 7 to move downward. The moving plate 7 compresses the first buffer spring 14. At this time, the first buffer spring 14 deforms and stores energy. In this process, the first buffer spring 14 absorbs and disperses the impact force through its elastic deformation. Then, when the first buffer spring 14 tries to return to its original state, the damper starts to work. The damper will prevent the rebound movement of the first buffer spring 14 and consume the energy previously stored in the spring, thereby realizing the primary buffering of the hydraulic press body 5. A secondary buffer mechanism is provided in the buffer box 3, and the secondary buffer mechanism is used to further buffer the hydraulic press body 5.

[0036] It is further explained that the secondary buffer mechanism includes two groups of sliding rods 24 fixedly installed inside the buffer box 3, a mounting plate 21 mounted on the outside of the sliding rods 24, and a moving block 25 mounted on the outside of the sliding rods 24. A second buffer spring 28 is arranged between the mounting plate 21 and the moving block 25. The second buffer spring 28 is mounted on the outside of the sliding rods 24, and the moving block 25 is movably connected to the moving plate 7.

[0037] When the movable plate 7 moves downward, the movable plate 7 drives the buffer block 26 to move in the direction of the second buffer spring 28. When the pressure applied to the pressing mold 8 is not large, the movable plate 7 does not move downward by a large amount, and the buffer block 26 is not in contact with the second buffer spring 28; when the pressure applied to the pressing mold 8 is too large, the movable plate 7 moves downward and drives the buffer block 26 to move in the direction of the second buffer spring 28, so that the sleeve 16 contacts the second buffer spring 28 and compresses and deforms the second buffer spring 28. The second buffer spring 28 absorbs and disperses the energy of the impact, further improving the buffering effect of the mechanism, while avoiding excessive pressure that exceeds the deformation limit of the first buffer spring 14, protecting the first buffer spring 14, and increasing the service life of the first buffer spring 14.

[0038] It is further explained that a fixing seat 22 is fixedly installed at the bottom of the movable plate 7 , a connecting rod 23 is rotatably installed on the fixing seat 22 , and a side of the connecting rod 23 away from the fixing seat 22 is rotatably connected to the top of the movable block 25 .

[0039] The movable connection between the moving plate 7 and the moving block 25 is realized by the cooperation of the fixing seat 22 and the connecting rod 23, so that the moving plate 7 can drive the moving block 25 to move when moving downward.

[0040] It is further explained that a stopper 27 is sleeved on the outside of the slide rod 24 , and both ends of the second buffer spring 28 are fixedly connected to the mounting plate 21 and one side of the stopper 27 , respectively. A buffer block 26 is fixedly connected to the side of the stopper 27 opposite to the moving block 25 .

[0041] When the pressure is too great, the movable plate 7 moves downward to drive the movable block 25 to move. The movable block 25 contacts and pushes the block 27. The block 27 moves to compress the second buffer spring 28. The setting of the buffer block 26 can reduce the impact when the buffer block 26 contacts the block 27. The buffer block 26 is made of rubber material, which can buffer the impact and reduce the noise generated by the collision between the buffer block 26 and the block 27.

[0042] It is further explained that a motor 4 is fixedly installed on the outside of the buffer box 3, and a driving shaft of the motor 4 is coaxially fixedly connected with a bidirectional threaded rod 10, and the bidirectional threaded rod 10 is rotatably installed inside the buffer box 3. The outside of the buffer box 3 is threadedly connected with a connecting plate 9, and the top of the connecting plate 9 is fixedly connected to the bottom of the mounting plate 21.

[0043] The motor 4 can drive the bidirectional threaded rod 10 to rotate, the bidirectional threaded rod 10 drives the connecting plate 9 to move on the outer surface of the bidirectional threaded rod 10, the connecting plate 9 drives the mounting plate 21 to move, and the movement of the mounting plate 21 can adjust the distance between the stop block 27 and the buffer block 26. The greater the distance between the buffer block 26 and the stop block 27, the greater the pressure required for the secondary buffer mechanism to work. Therefore, whether the secondary buffer mechanism is enabled can be adjusted according to the actual situation through the cooperation of the motor 4 with the bidirectional threaded rod 10.

[0044] It is further explained that a guide rod 11 is fixed inside the buffer box 3, and the guide rod 11 is slidably connected to the connecting plate 9. The guide rod 11 guides and limits the movement of the connecting plate 9, prevents the connecting plate 9 from rotating on the bidirectional threaded rod 10, and improves the stability of the connecting plate 9 when it moves outside the bidirectional threaded rod 10.

[0045] It is further explained that a thread is provided on the outer surface of the sleeve 16, and an adjusting block 17 is connected to the external thread of the sleeve 16. The adjusting block 17 is rotatably installed on the fixed frame 12. The first buffer spring 14 is arranged between the movable plate 7 and the adjusting block 17. A limiting groove 18 is provided at the bottom of the sleeve 16. A limiting block 19 is slidably installed in the limiting groove 18, and the limiting block 19 is fixedly connected to the fixed frame 12.

[0046] The limiting groove 18 can guide and limit the limiting block 19, and the adjusting block 17 can be rotated outside the sleeve 16 by using tools such as a wrench. Since the limiting groove 18 limits the limiting block 19 and the adjusting block 17 is threadedly connected to the sleeve 16, the sleeve 16 itself does not rotate and moves up and down, thereby adjusting the distance between the adjusting block 17 and the movable plate 7, thereby realizing the adjustment of the preload of the first buffer spring 14, and the buffering effect of the first buffer spring 14 can be adjusted, thereby improving the application range of the buffer mechanism.

[0047] It is further explained that the buffer box 3 is provided with a slide groove 20, in which a slider 15 is slidably connected, and the slider 15 is fixedly connected to the moving plate 7. The slide groove 20 guides and limits the slider 15, thereby improving the stability of the moving plate 7 when moving in the buffer box 3.

[0048] Specific reference is made to the following operations: start the hydraulic press body 5, the driving shaft of the hydraulic press body 5 drives the pressing head 6 to move downward, the pressing head 6 cooperates with the pressing die 8 to press the refractory material, the pressing die 8 drives the moving plate 7 to move downward, the moving plate 7 compresses the first buffer spring 14, the telescopic rod 13 cooperates with the sleeve 16 to form a damper, and then cooperates with the first buffer spring 14 to form a spring damper, to perform primary buffering on the hydraulic press body 5, when the moving plate 7 moves downward, the moving plate 7 drives the buffer block 26 to move in the direction of the second buffer spring 28, the moving plate 7 moves downward and drives the buffer block 26 to move in the direction of the second buffer spring 28, so that the sleeve 16 contacts the second buffer spring 28 and compresses and deforms the second buffer spring 28, the second buffer spring 28 absorbs and disperses the impact energy, and further improves the buffering effect of the mechanism.

[0049] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0050] Although the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A buffer mechanism for a fire-resistant hydraulic press, characterized in that: The invention comprises a workbench (1), wherein a mounting frame (2) is fixedly mounted on the workbench (1), a hydraulic press body (5) is fixedly mounted on the mounting frame (2), a pressing head (6) is fixedly mounted on the driving shaft of the hydraulic press body (5), a buffer box (3) is fixedly mounted on the workbench (1), a movable plate (7) is slidably mounted on the buffer box (3), a pressing die (8) is fixedly connected to the movable plate (7), and the pressing die (8) is used in conjunction with the pressing head (6), a fixed frame (12) is fixedly mounted on the workbench (1), a sleeve (16) is slidably mounted in the fixed frame (12), a telescopic rod (13) is sleeved in the sleeve (16), the top of the telescopic rod (13) is fixedly connected to the bottom of the movable plate (7), a first buffer spring (14) is sleeved on the outside of the sleeve (16), and a secondary buffer mechanism is arranged in the buffer box (3), and the secondary buffer mechanism is used to further buffer the hydraulic press body (5).

2. A fire-resistant special hydraulic press buffer mechanism according to claim 1, characterized in that: The secondary buffer mechanism comprises two sets of slide bars (24) fixedly mounted inside the buffer box (3), a mounting plate (21) sleeved outside the slide bars (24), and a moving block (25) sleeved outside the slide bars (24); a second buffer spring (28) is provided between the mounting plate (21) and the moving block (25); the second buffer spring (28) is sleeved outside the slide bars (24); and the moving block (25) is movably connected to the moving plate (7).

3. A fire-resistant special hydraulic press buffer mechanism according to claim 2, characterized in that: A fixing seat (22) is fixedly mounted on the bottom of the movable plate (7), a connecting rod (23) is rotatably mounted on the fixing seat (22), and a side of the connecting rod (23) away from the fixing seat (22) is rotatably connected to the top of the movable block (25).

4. A fire-resistant special hydraulic press buffer mechanism according to claim 3, characterized in that: A stopper (27) is sleeved on the outside of the slide bar (24), and two ends of the second buffer spring (28) are fixedly connected to the mounting plate (21) and one side of the stopper (27), respectively. A buffer block (26) is fixedly connected to the side of the stopper (27) opposite to the moving block (25).

5. The buffer mechanism for a fire-resistant hydraulic press according to claim 4, characterized in that: A motor (4) is fixedly mounted on the outside of the buffer box (3); a bidirectional threaded rod (10) is coaxially fixedly connected to the drive shaft of the motor (4); the bidirectional threaded rod (10) is rotatably mounted inside the buffer box (3); a connecting plate (9) is threadedly connected to the outside of the buffer box (3); and the top of the connecting plate (9) is fixedly connected to the bottom of the mounting plate (21).

6. A fire-resistant special hydraulic press buffer mechanism according to claim 5, characterized in that: A guide rod (11) is fixed inside the buffer box (3), and the guide rod (11) is slidably connected to the connecting plate (9).

7. A fire-resistant special hydraulic press buffer mechanism according to claim 6, characterized in that: The outer surface of the sleeve (16) is provided with a thread, the outer thread of the sleeve (16) is connected to an adjustment block (17), the first buffer spring (14) is arranged between the movable plate (7) and the adjustment block (17), a limit groove (18) is provided at the bottom of the sleeve (16), a limit block (19) is slidably installed in the limit groove (18), and the limit block (19) is fixedly connected to the fixing frame (12).

8. The buffer mechanism for fire-resistant hydraulic press according to claim 7, characterized in that: The buffer box (3) is provided with a slide groove (20), a slider (15) is slidably connected in the slide groove (20), and the slider (15) is fixedly connected to the movable plate (7).

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