Overhead buffer device for hydraulic machine

Abstract

The overhead buffering device comprises a plurality of limiting rods, a buffering oil cylinder and a rotating support, the lower ends of the limiting rods are fixedly connected with a pressing block, the limiting rods are movably arranged in installation holes in a cross beam in a penetrating mode, the cross beam is fixed to a machine body, the buffering oil cylinder is installed at the position of an upper port of the installation hole, and the rotating support is fixed to the machine body. The limiting rod penetrates through the buffering oil cylinder, the upper section of the limiting rod is in threaded connection with a limiting nut, and the limiting nut is located above the buffering oil cylinder. The rotating support rotates to drive the limiting nut on the limiting rod to rotate, so that the position of the limiting nut on the limiting rod is changed, and then the distance between the limiting nut and the buffering oil cylinder is changed; the rotary support is connected with the driving chain wheel on the oil pump motor through the transmission chain wheel, the oil pump motor is remotely controlled to work through the rotary encoder, personnel do not need to climb to manually adjust the position of the limiting nut, working efficiency is improved, and personnel safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to an upper-mounted buffer device for a hydraulic press. Background Art

[0002] A hydraulic press is a machine that uses liquid as its working medium and is manufactured according to Pascal's principle to transfer energy to achieve various processes. A hydraulic press generally consists of three parts: the main machine (main engine), the power system, and the hydraulic control system.

[0003] Existing hydraulic presses generate vibration during punching, requiring the addition of a buffer device to reduce vibration. These devices are typically installed below the sides of the machine. For some machines with side-sliding worktables, the buffer device must be installed on the top of the machine. The position of the buffer device installed on the top of the machine can only be adjusted manually, while installation on the upper beam requires manual operation, which is cumbersome. Utility Model Content

[0004] The purpose of the utility model is to solve the above deficiencies in the prior art and to provide an upper-mounted buffer device for a hydraulic press.

[0005] A top-mounted buffer device for a hydraulic press comprises a plurality of limit rods, a buffer oil cylinder, and a rotating bracket. The lower ends of the limit rods are fixedly connected to the pressure block. The limit rods are movably inserted into mounting holes on a crossbeam. The crossbeam is fixed to the machine body. The buffer oil cylinder is installed at the upper end of the mounting hole. The limit rods pass through the buffer oil cylinder. The upper sections of the limit rods are threadedly connected to limit nuts. The limit nuts are located above the buffer oil cylinder.

[0006] The rotating bracket is installed on the rotating seat. The rotating seat is a bottomless structure with a clearance chamber inside. The clearance chamber is used to place the buffer cylinder. The upper end surface of the clearance chamber is provided with a clearance through hole. The aperture of the clearance through hole is larger than the diameter of the limit nut. The bottom of the side wall of the rotating seat is provided with a protruding connecting ear. The rotating seat is fixed to the crossbeam by bolts. The bolts pass through the connecting ear and the crossbeam in sequence.

[0007] The rotating bracket includes a rotating base and a rotating sleeve. The rotating base is an annular structure, and a connecting ring with an annular protrusion is provided on the inner edge thereof. The rotating sleeve is a cylindrical structure without a bottom or a cover. A connecting sleeve with an annular structure is provided at the bottom of the rotating sleeve. The connecting sleeve is sleeved on the outer side of the connecting ring of the rotating base. A rotating bearing is provided between the outer wall of the connecting ring and the inner wall of the connecting sleeve. The connecting sleeve and the rotating base are fixedly connected by a first cover plate. The first cover plate is an annular structure, and an inwardly protruding pressure plate is provided on the inner edge of its upper end. The first cover plate is fixedly connected to the rotating base by bolts, and the pressure plate is press-fitted to the upper end surface of the connecting sleeve.

[0008] A slider and a slide rail are provided on the side wall of the rotating sleeve. The slider is slidably connected to the slide rail, and the slider is fixedly connected to the limit nut. The outer side of the rotating sleeve is fixedly connected to the transmission sprocket. The transmission sprocket is connected to the driving sprocket through a chain. The driving sprocket is connected to the output end of the oil pump motor. The oil pump motor is connected to the rotary encoder. The rotary encoder is used to control the operation of the oil pump motor.

[0009] Preferably, the slider and the limiting rod are fixedly connected via a nut.

[0010] Preferably, the buffer cylinder includes a base and a movable seat. The base is a coverless structure. An inner cavity is provided in the base. A positioning hole is provided at the center of the bottom surface of the inner cavity. A through hole for the limiting rod to pass through is provided at the center of the bottom surface of the movable seat. An outer circle is provided in the middle section of the outer wall. The movable seat is movably embedded in the base. The outer circle of the outer wall of the movable seat is connected to the side wall of the inner cavity of the base. The outer wall of the lower section of the movable seat is connected to the inner wall of the positioning hole. A buffer material is provided between the lower end surface of the outer circle and the bottom surface.

[0011] Preferably, a second cover plate is provided at the opening at the upper end of the base. The second cover plate is an annular structure, and an inwardly protruding pressure plate is provided on the inner edge of its upper end. The second cover plate is fixedly connected to the base by bolts. The pressure plate is located above the outer circle of the movable seat and is used to limit the travel of the movable seat.

[0012] Preferably, a limiting screw cover is provided at the upper end of the limiting rod, the limiting screw cover is located above the limiting nut, and a bolt is provided on the upper end surface of the limiting screw cover, which passes through the limiting screw cover and the limiting rod in sequence.

[0013] Beneficial effect: Compared with the prior art, the utility model drives the rotation of the limit nut on the limit rod through the rotation of the rotating bracket, thereby changing the position of the limit nut on the limit rod, and then changing the distance between the limit nut and the buffer cylinder. The rotating bracket is connected to the active sprocket on the oil pump motor through the transmission sprocket, and the oil pump motor is remotely controlled by the rotary encoder. There is no need for personnel to climb high to manually adjust the position of the limit nut, which improves work efficiency and ensures personnel safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the hydraulic press when the pressing block is in the initial position;

[0015] Figure 2 It is a schematic diagram of the structure of the hydraulic press after the briquette is lowered;

[0016] Figure 3 yes Figure 1 A local enlarged view of point A;

[0017] In the figure, 1. crossbeam, 2. limiting rod, 3. pressure block, 4. oil pump motor, 5. driving sprocket, 6. chain, 7. limiting screw cover, 8. limiting nut, 9. slider, 10. rotating bracket, 11. transmission sprocket, 12. connecting sleeve, 13. first cover plate, 14. rotating bearing, 15. rotating base, 16. rotating seat, 17. connecting ear, 18. movable seat, 19. second cover plate, 20. base, 21. buffer material, 22. outer circle. DETAILED DESCRIPTION

[0018] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0019] like Figure 1-3 As shown, crossbeam 1, limiting rod 2, pressure block 3, oil pump motor 4, driving sprocket 5, chain 6, limiting screw cover 7, limiting nut 8, slider 9, rotating bracket 10, transmission sprocket 11, connecting sleeve 12, first cover plate 13, rotating bearing 14, rotating base 15, rotating seat 16, connecting ear 17, movable seat 18, second cover plate 19, base 20, buffer material 21, outer circle 22;

[0020] A top-mounted buffer device for a hydraulic press comprises a plurality of limit rods 2, a buffer oil cylinder, and a rotating bracket 10. The lower ends of the limit rods 2 are fixedly connected to a pressure block 3. The limit rods 2 are movably inserted into mounting holes on a crossbeam 1. The crossbeam 1 is fixed to the machine body. The buffer oil cylinder is installed at the upper end of the mounting hole. The limit rods 2 pass through the buffer oil cylinder. The upper section of the limit rods 2 is threadedly connected to a limit nut 8. The limit nut 8 is located above the buffer oil cylinder.

[0021] The rotating bracket 10 is installed on the rotating base 16. The rotating base 16 is a bottomless structure with a clearance chamber inside. The clearance chamber is used to place the buffer cylinder. The upper end surface of the clearance chamber is provided with a clearance through hole. The aperture of the clearance through hole is larger than the diameter of the limit nut 8. The bottom of the side wall of the rotating base 16 is provided with a protruding connecting ear 17. The rotating base 16 is fixed to the crossbeam 1 by bolts. The bolts pass through the connecting ear 17 and the crossbeam 1 in sequence.

[0022] The rotating bracket 10 includes a rotating base 15 and a rotating sleeve. The rotating base 15 is an annular structure, and a connecting ring with an annular protrusion is provided on its inner edge. The rotating sleeve is a cylindrical structure without a bottom or a cover. A connecting sleeve 12 with an annular structure is provided at the bottom of the rotating sleeve. The connecting sleeve 12 is sleeved on the outer side of the connecting ring of the rotating base. A rotating bearing 14 is provided between the outer wall of the connecting ring and the inner wall of the connecting sleeve 12. The connecting sleeve 12 and the rotating base are fixedly connected by a first cover plate 13. The first cover plate 13 is an annular structure, and an inwardly protruding pressure plate is provided on the inner edge of its upper end. The first cover plate 13 is fixedly connected to the rotating base 15 by bolts, and the pressure plate is pressed on the upper end surface of the connecting sleeve 12.

[0023] A slider 9 and a slide rail are provided on the side wall of the rotating sleeve. The slider 9 is slidably connected to the slide rail. The slider 9 is fixedly connected to the limit nut 8. The outer side of the rotating sleeve is fixedly connected to the transmission sprocket 11. The transmission sprocket 11 is connected to the driving sprocket 5 through the chain 6. The driving sprocket 5 is connected to the output end of the oil pump motor 4. The oil pump motor 4 is connected to a rotary encoder. The rotary encoder is used to control the operation of the oil pump motor 4.

[0024] It should be noted that there are two limit rods 2 , that is, the rotation brackets 10 on the two limit rods 2 are driven by the sprocket chain 6 .

[0025] In this embodiment, the slider 9 and the limiting rod 2 are fixedly connected via a nut.

[0026] In this embodiment, the buffer cylinder includes a base 20 and a movable seat 18. The base 20 is a coverless structure. An inner cavity is provided in the base 20, and a positioning hole is provided at the center of the bottom surface of the inner cavity. A through hole for the limiting rod 2 to pass through is provided at the center of the bottom surface of the movable seat 18. An outer circle 22 is provided in the middle section of its outer wall. The movable seat 18 is movably embedded in the base 20. The outer circle 22 of the outer wall of the movable seat 18 is connected to the side wall of the inner cavity of the base 20. The outer wall of the lower section of the movable seat 18 is connected to the inner wall of the positioning hole. A buffer material 21 is provided between the lower end surface and the bottom surface of the outer circle 22.

[0027] In this embodiment, a second cover plate 19 is provided at the opening at the upper end of the base 20. The second cover plate 19 is an annular structure, and an inwardly protruding pressure plate is provided on the inner edge of the upper end. The second cover plate 19 is fixedly connected to the base 20 by bolts. The pressure plate is located above the outer circle 22 of the movable seat 18 and is used to limit the stroke of the movable seat 18.

[0028] In this embodiment, a limiting screw cover 7 is provided at the upper end of the limiting rod 2. The limiting screw cover 7 is located above the limiting nut 8. A bolt is provided on the upper end surface of the limiting screw cover 7. The bolt passes through the limiting screw cover 7 and the limiting rod 2 in sequence.

[0029] Instructions for use: When it is necessary to change the descending position of the pressure block 3, the oil pump motor 4 is controlled to work through the rotary encoder, and the active sprocket 5 drives the two transmission sprockets 11 to rotate through the chain 6, thereby driving the rotating bracket 10 to rotate, and the rotating bracket 10 drives the limit nut 8 to rotate, thereby adjusting the position of the limit nut 8 on the limit rod 2 and changing the distance between the limit nut 8 and the buffer cylinder.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A top-mounted buffer device for a hydraulic press, characterized in that: It includes multiple limit rods, buffer cylinders, and rotating brackets. The lower ends of the limit rods are fixedly connected to the pressure blocks. The limit rods are movably inserted into the mounting holes on the cross beams. The cross beams are fixed to the machine body. The buffer cylinders are installed at the upper ends of the mounting holes. The limit rods pass through the buffer cylinders. The upper sections of the limit rods are threadedly connected to the limit nuts. The limit nuts are located above the buffer cylinders. The rotating bracket is installed on the rotating seat. The rotating seat is a bottomless structure with a clearance chamber inside. The clearance chamber is used to place the buffer cylinder. The upper end surface of the clearance chamber is provided with a clearance through hole. The aperture of the clearance through hole is larger than the diameter of the limit nut. The bottom of the side wall of the rotating seat is provided with a protruding connecting ear. The rotating seat is fixed to the crossbeam by bolts, and the bolts pass through the connecting ear and the crossbeam in sequence. The rotating bracket includes a rotating base and a rotating sleeve. The rotating base is an annular structure, and an annular protruding connecting ring is provided on its inner edge. The rotating sleeve is a bottomless and coverless cylindrical structure. A connecting sleeve with an annular structure is provided at the bottom of the rotating sleeve. The connecting sleeve is sleeved on the outer side of the connecting ring of the rotating base. A rotating bearing is provided between the outer wall of the connecting ring and the inner wall of the connecting sleeve. The connecting sleeve and the rotating base are fixedly connected by a first cover plate. The first cover plate is an annular structure, and an inwardly protruding pressure plate is provided on the inner edge of its upper end. The first cover plate is fixedly connected to the rotating base by bolts, and the pressure plate is pressed on the upper end surface of the connecting sleeve. A slider and a slide rail are provided on the side wall of the rotating sleeve, the slider is slidably connected to the slide rail, the slider is fixedly connected to the limit nut, the outer side of the rotating sleeve is fixedly connected to the transmission sprocket, the transmission sprocket is connected to the driving sprocket through a chain, the driving sprocket is connected to the output end of the oil pump motor, the oil pump motor is connected to the rotary encoder, and the rotary encoder is used to control the operation of the oil pump motor.

2. The top-mounted buffer device for a hydraulic press according to claim 1, characterized in that: The sliding block is fixedly connected to the limiting rod via a nut.

3. The top-mounted buffer device for a hydraulic press according to claim 1, characterized in that: The buffer cylinder includes a base and a movable seat. The base is a coverless structure. An inner cavity is provided in the base. A positioning hole is provided at the center of the bottom surface of the inner cavity. A through hole for a limiting rod to pass through is provided at the center of the bottom surface of the movable seat. An outer circle is provided in the middle section of its outer wall. The movable seat is movably embedded in the base. The outer circle of the outer wall of the movable seat is connected to the side wall of the inner cavity of the base. The outer wall of the lower section of the movable seat is connected to the inner wall of the positioning hole. A buffer material is provided between the lower end surface of the outer circle and the bottom surface.

4. The top-mounted buffer device for a hydraulic press according to claim 3, characterized in that: A second cover plate is provided at the opening at the upper end of the base. The second cover plate is an annular structure, and an inwardly protruding pressure plate is provided on the inner edge of the upper end. The second cover plate is fixedly connected to the base by bolts. The pressure plate is located above the outer circle of the movable seat and is used to limit the travel of the movable seat.

5. The top-mounted buffer device for a hydraulic press according to claim 1, characterized in that: The upper end of the limiting rod is provided with a limiting screw cover, which is located above the limiting nut. The upper end surface of the limiting screw cover is provided with a bolt, which passes through the limiting screw cover and the limiting rod in sequence.

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