Spring damping vibration attenuation foot pad for punching machine

Abstract

The utility model relates to the technical field of vibration attenuation foot pads, and discloses a spring damping vibration attenuation foot pad for a punching machine, which comprises a lower backing plate, a lower seat, an upper cover, a ball rod, a ball cup and an upper backing plate, the lower seat is arranged on the upper surface of the lower base plate; a hole seat is arranged in the middle of the lower seat; the upper cover is arranged above the lower seat, and a plurality of first springs are arranged between the lower seat and the upper cover; the top of the ball rod is fixedly arranged at the bottom of the upper cover; the ball cup is in sliding fit with the inner wall of the hole seat; the ball head is in universal running fit with the mounting cavity of the ball head seat; the bottom of the ball head seat and the inner wall of the hole seat are enclosed to form a lower oil cavity for filling damping liquid; the top of the ball cup and the sealing cover define an upper oil cavity used for being filled with damping liquid. Two one-way valves with opposite conducting directions are arranged in the ball cup; the upper base plate is arranged above the upper cover, and a plurality of leveling assemblies are arranged between the upper base plate and the upper cover. The vibration reduction foot pad achieves double vibration reduction of vertical impact and transverse deflection, vibration reduction is more comprehensive and more stable, and the operation stability of a punching machine is high.

Description

Technical Field

[0001] This utility model relates to the field of vibration damping pad technology, and in particular to a spring-damped vibration damping pad for punch presses. Background Technology

[0002] A punch press is a device used for sheet metal stamping, forming, and cutting. During operation, its slide moves the die downwards rapidly, applying a momentary impact force to the workpiece to complete the processing action. This impact force not only acts on the workpiece but is also transmitted through the punch press body to the support legs and then downwards to the mounting surface. Under the long-term action of this impact force, the ground will be subjected to repeated pressure, gradually leading to cracks and depressions; and the deformation of the ground will further cause the punch press body to tilt, ultimately affecting the stamping accuracy of the punch press.

[0003] To alleviate the aforementioned problems, existing technologies typically employ vibration-damping pads at the bottom of the punch press support legs. These pads absorb some of the impact force through elastic deformation and damping, reducing vibration transmission during punch press operation. For example, Chinese Patent Publication No. CN221723305 U discloses a novel elastomeric damping pad, comprising a base, a damping cylinder, an elastic element, a movable cover, and a damping block. The damping cylinder is vertically positioned inside the base and filled with a damping medium. The elastic element is vertically positioned on both sides of the damping cylinder and connected to the movable cover. The damping block is fixed to the bottom of the movable cover and inserted into the damping cylinder. This pad, through the movable cover, moves the damping block up and down along the damping cylinder. The elastic deformation of the elastic element offsets some of the impact force, while the viscous resistance of the damping medium attenuates the kinetic energy of the impact force, achieving a vertical vibration reduction effect. However, this pad only provides vertical vibration damping and cannot cope with the slight sway generated during punch press operation; that is, it cannot absorb the lateral force generated by the sway, resulting in poor overall vibration reduction.

[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a spring-damped vibration-reducing foot pad for punch presses to solve the above problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A spring-damped vibration-reducing foot pad for a punch press includes:

[0008] The bottom of the lower pad has a first anti-slip pad.

[0009] The lower seat is located on the upper surface of the lower pad plate; the middle of the lower seat is provided with an upwardly extending hole seat, and the top of the hole seat is provided with a cover;

[0010] The upper cover is located above the lower base, and several first springs are provided between the lower base and the upper cover;

[0011] The cue stick has its top fixed to the bottom of the cap, and its lower end has a ball head.

[0012] The ball head seat slides vertically against the inner wall of the bore seat. An installation cavity matching the ball head is provided inside the ball head seat. The ball rod passes through the cap and extends into the bore seat, with the ball head and installation cavity rotating in a universal joint. The bottom of the ball head seat and the inner wall of the bore seat form a lower oil cavity, which is used to fill damping fluid. The top of the ball head seat and the cap form an upper oil cavity, which is also used to fill damping fluid. Two one-way valves with opposite directions of operation are provided inside the ball head seat.

[0013] An upper pad is located above the upper cover, and several leveling components are provided between the upper pad and the upper cover; a second anti-slip pad is provided on the top of the upper pad.

[0014] Furthermore, three leveling components are provided, arranged in a circular array with the axis of the upper cover as the center; each leveling component includes a leveling sleeve and a leveling screw; the leveling sleeve includes a nut and a screw rod located at the bottom of the nut, and a first through hole extending to the screw rod is opened in the nut; the screw rod is threaded to the upper cover, and the top surface of the nut abuts against the bottom surface of the upper pad; the leveling screw passes through the first through hole from bottom to top and is screwed to the upper pad.

[0015] Furthermore, there are six first springs, which are arranged in a circular array with the axis of the upper cover as the center; the upper surface of the lower seat and the lower surface of the upper cover are provided with coaxially arranged first truncated cones corresponding to the first springs; the two ends of the first springs are respectively sleeved on the two corresponding first truncated cones.

[0016] Furthermore, it also includes six second springs; each first pedestal is provided with a coaxially arranged second pedestal, each second spring is located inside a first spring, and its two ends are respectively sleeved on the corresponding two second pedestals; the difference between the free length of the first spring and the free length of the second spring is consistent with the sum of the heights of the two oppositely arranged first pedestals.

[0017] Furthermore, the distance between the top of the cap and the bottom of the hole seat is the same as the distance between the bottom of the top cover and the bottom of the ball head seat.

[0018] Furthermore, a first oil seal is provided between the cap and the inner wall of the hole seat; a second through hole is provided in the cap for the cue stick to pass through, and a movable gap is formed between the wall of the second through hole and the outer wall of the cue stick, which provides space for the omnidirectional rotation of the cue stick; a second oil seal is provided in the movable gap.

[0019] Furthermore, the ball head seat includes an upper ball cup and a lower ball cup, the upper ball cup being fixedly connected to the lower ball cup by fastening screws; the upper ball cup has two first fluid passage holes, which are connected to two one-way valves in a corresponding manner; the side wall of the upper ball cup has an annular groove, and an anti-wear ring is provided in the annular groove.

[0020] Furthermore, the lower ball cup has a second liquid passage and a third liquid passage connected in sequence, and the diameter of the second liquid passage is larger than the diameter of the third liquid passage; the one-way valve includes a steel ball, a third spring and an adjusting screw, the steel ball is disposed in the second liquid passage and is used to block one end of the third liquid passage, the adjusting screw is screwed to the end of the second liquid passage away from the third liquid passage, the third spring is sleeved in the second liquid passage, and its two ends abut against the steel ball and the adjusting screw respectively; a fourth liquid passage is provided in the adjusting screw.

[0021] Furthermore, the lower pad has a groove coaxially arranged with the hole seat; the lower seat has a boss coaxially arranged with the hole seat, and the boss is embedded in the groove.

[0022] Beneficial effects:

[0023] This invention provides a spring-damped vibration-damping foot pad for a punch press. Multiple first springs attenuate the vertical impact force generated by the punch press through elastic deformation. The damping fluid inside the dual oil chambers flows in a directional manner after being pressurized, and the viscous resistance generated during the flow further attenuates the kinetic energy of the impact force. At the same time, the universal rotation of the ball head and the ball head seat allows the ball rod to swing in a small range and at multiple angles. Combined with the directional flow of the damping fluid and the uneven elastic deformation of each first spring, it can effectively absorb the small amount of sway force generated during the operation of the punch press, realizing dual vibration reduction of vertical impact and lateral sway, making the vibration reduction more comprehensive and stable, and the punch press operation stability is high. Attached Figure Description

[0024] Figure 1 Structural diagram of the spring-damped vibration-damping foot pad for punch press provided by this utility model;

[0025] Figure 2 A front sectional view of the spring-damped vibration-damping foot pad for punch presses provided by this utility model;

[0026] Figure 3 This is a front sectional view of the ball head seat in the spring damping vibration reduction foot pad for punch presses provided by this utility model.

[0027] Figure 4 A side sectional view of the spring-damped vibration-reducing foot pad for punch press provided by this utility model;

[0028] Figure 5 Exploded view of the spring damping vibration reduction pad for punch press provided by this utility model;

[0029] Figure 6An exploded view of the ball head seat in the spring damping vibration reduction foot pad for punch presses provided by this utility model.

[0030] Reference numerals: Lower pad 1, First anti-slip pad 11, Groove 12, Lower seat 2, Hole seat 21, Cover 22, First oil seal 221, Second through hole 222, Second oil seal 223, Lower oil cavity 23, Upper oil cavity 24, Boss 25, Upper cover 3, First spring 31, First frustum 32, Second spring 33, Second frustum 34, Cue stick 4, Ball head 41, Ball head seat 5, Mounting cavity 51, Upper ball cup 52, First liquid passage hole 521, Ring Groove 522, anti-wear ring 523, second cavity 524, clearance through hole 525, lower ball cup 53, second liquid passage hole 531, third liquid passage hole 532, first cavity 533, one-way valve 6, steel ball 61, third spring 62, adjusting screw 63, fourth liquid passage hole 631, upper pad 7, second anti-slip pad 71, leveling assembly 8, leveling screw sleeve 81, nut 811, screw 812, first through hole 813, leveling screw 82. Detailed Implementation

[0031] This utility model provides a spring-damped vibration-reducing foot pad for a punch press. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0032] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0033] Please see Figures 1 to 6As shown, this utility model provides a spring-damped vibration-damping foot pad for a punch press. In use, a spring-damped vibration-damping foot pad for a punch press in this embodiment is installed at the bottom of the support foot of the punch press. It can buffer and reduce the vertical impact force and slight sway force generated during the operation of the punch press, effectively absorb the kinetic energy of the impact force, attenuate the transmission of vibration, and thus reduce the cracking and sinking problems caused by long-term repeated pressure on the ground. The spring-damped vibration-reducing foot pad for the punch press includes a lower pad 1, a lower seat 2, an upper cover 3, a ball rod 4, a ball head seat 5, and an upper pad 7. The bottom of the lower pad 1 is provided with a first anti-slip pad 11. The lower seat 2 is located on the upper surface of the lower pad 1. A hole seat 21 extending upwards is provided in the middle of the lower seat 2, and a cap 22 is provided on the top of the hole seat 21. The upper cover 3 is located above the lower seat 2, and several first springs 31 are provided between the lower seat 2 and the upper cover 3. The top of the ball rod 4 is fixed to the bottom of the upper cover 3, and a ball head 41 is provided at its lower end. The ball head seat 5 slides vertically against the inner wall of the hole seat 21. An installation cavity 51 matching the ball head 41 is opened inside the ball head seat 5. The ball rod 4 passes through the cap 22 and extends to the hole seat 2. Inside the ball head 41, the ball head 41 is omnidirectionally rotated with the mounting cavity 51. The bottom of the ball head seat 5 and the inner wall of the hole seat 21 form a lower oil cavity 23, which is used to fill damping fluid. The ball head seat 5 is provided with two one-way valves 6 with opposite conduction directions. The top of the ball head seat 5 and the cover 22 form an upper oil cavity 24, which is used to fill damping fluid. The upper pad 7 is located above the upper cover 3. Several leveling components 8 are provided between the upper pad 7 and the upper cover 3. The leveling components 8 are used to adjust the installation height of the upper pad 7. The punch press body is placed in a stable position by the cooperation of multiple spring damping and vibration damping pads for punch presses in this embodiment. The top of the upper pad 7 is provided with a second anti-slip pad 71.

[0034] During operation, the instantaneous vertical impact force generated by the punch press is transmitted through the machine body to the upper pad 7 and the upper cover 3. After being pressed, the upper cover 3 moves downward, compressing multiple first springs 31 between the lower seat 2 and the upper cover 3. The elastic deformation of the first springs 31 offsets part of the impact force. At the same time, it drives the ball rod 4 to move downward synchronously. The ball head 41 at the lower end of the ball rod 4 pushes the ball head seat 5 to slide vertically down along the inner wall of the hole seat 21, reducing the space of the lower oil chamber 23 and pressurizing the damping fluid. At this time, one of the one-way valves 6 in the ball head seat 5 is opened, and the pressurized damping fluid flows to the upper oil chamber 24 through the one-way valve 6. The viscous resistance generated during the flow of the damping fluid can attenuate the kinetic energy of the impact force. When the vertical impact force disappears, the first spring 31 elastically resets, causing the upper cover 3 to rise. The ball head seat 5 moves upward accordingly, and the damping fluid in the upper oil chamber 24 is pressurized. Another one-way valve 6 with reverse conduction is opened, and the damping fluid flows back to the lower oil chamber 23, completing the stable reset of the ball head seat 5 and ensuring the stable buffering effect during the next impact.

[0035] When the punch press operates, slight swaying caused by factors such as slide imbalance and workpiece placement deviation will cause the upper pad 7 to tilt at a small angle. At this time, the universal rotation of the ball head 41 and the mounting cavity 51 of the ball head seat 5 allows the ball rod 4 to swing within a small range of multiple angles, avoiding stress concentration caused by hard connection. At the same time, the lateral pressure will cause the damping fluid in the upper oil cavity 24 and the lower oil cavity 23 to flow in a directional manner. The two one-way valves 6 with opposite conduction directions will adaptively open or close according to the pressure direction. In conjunction with the uneven elastic deformation of multiple first springs 31 due to force differences, the lateral force generated by the swaying is effectively absorbed, achieving a buffering effect when the punch press sways. Compared with the existing technology, the combination of elastic buffering of the first spring 31 and viscous resistance buffering of the damping fluid in the dual oil cavities improves the absorption and attenuation efficiency of vertical impact force. At the same time, the universal rotation of the ball rod 4 and the ball head seat 5 can buffer the swaying generated by the punch press, achieving dual buffering of vertical impact and lateral sway, making vibration reduction more comprehensive and stable, and further ensuring the smooth operation of the punch press.

[0036] By setting a first anti-slip pad 11 at the bottom of the lower pad 1 and a second anti-slip pad 71 at the top of the upper pad 7, the stability of the foot pads in contact with the ground and the punch press support feet can be enhanced, preventing slippage or displacement during operation. The surface of the anti-slip pads is provided with transverse stripes, cross-grid patterns, or serrated patterns to increase the coefficient of contact friction.

[0037] See above. Figure 2 The lower pad 1 has a groove 12 coaxially arranged with the hole seat 21; the lower seat 2 has a boss 25 coaxially arranged with the hole seat 21, which is embedded in the groove 12 to form a positioning fit. In practical applications, the planar size of the lower pad 1 can be flexibly selected according to the usage requirements. The above structure can adapt to lower pads 1 of different specifications, increase the contact area between the lower pad 1 and the ground, improve the overall placement stability of the foot pad, and reduce the pressure on the ground. During installation, simply align the boss 25 on the lower seat 2 with the groove 12 on the lower pad 1 and insert it, which can quickly complete the assembly of the lower pad 1 and the lower seat 2, greatly simplifying the assembly process of the foot pad.

[0038] In a preferred embodiment, see [reference] Figure 4 , 6The leveling assembly 8 is provided in three parts, and the three leveling assemblies 8 are arranged in a circular array with the axis of the upper cover 3 as the center. Each leveling assembly 8 includes a leveling sleeve 81 and a leveling screw 82. The leveling sleeve 81 includes a nut 811 and a screw 812 located at the bottom of the nut 811. A first through hole 813 extending to the screw 812 is opened in the nut 811. The screw 812 is threaded to the upper cover 3, and the top surface of the nut 811 abuts against the bottom surface of the upper pad 7. The leveling screw 82 passes through the first through hole 813 from bottom to top and is screwed to the upper pad 7. During leveling, first loosen the leveling screw 82 to release its locking limit on the upper pad 7 and the leveling sleeve 81. Then rotate the nut 811 of the leveling sleeve 81. Since the screw 812 is threaded with the upper cover 3, rotating the nut 811 will drive the screw 812 to rise and fall vertically, thereby driving the nut 811 to rise and fall synchronously. Since the upper pad 7 is supported by the nuts 811 of the three leveling sleeves 81, the leveling and height adjustment of the upper pad 7 can be achieved by adjusting the lifting height of each leveling sleeve 81. After adjustment, tighten the leveling screw 82 to lock the leveling screw 82 tightly with the upper pad 7 and the leveling sleeve 81, thereby fixing the relative position of the upper pad 7, the leveling sleeve 81 and the upper cover 3, and ensuring the stability of the structure after leveling.

[0039] In a preferred embodiment, see [reference] Figure 2 , 5 The first spring 31 is configured as six, arranged in a circular array with the axis of the upper cover 3 as the center. The upper surface of the lower seat 2 and the lower surface of the upper cover 3 are both provided with coaxially arranged first frustums 32 corresponding to the first springs 31. The two ends of the first spring 31 are respectively fitted onto two corresponding first frustums 32, with their end faces abutting against the upper cover 3 and the lower seat 2 respectively. The two first frustums 32 serve to position and limit the first spring 31, preventing lateral displacement or tilting during compression or reset, and ensuring that the first spring 31 always stably generates elastic deformation along its own axis.

[0040] Further, see Figure 2 , 5It also includes six second springs 33; each first frustum 32 is provided with a coaxially arranged second frustum 34, each second spring 33 is located inside a first spring 31, and its two ends are respectively sleeved on the two corresponding second frustums 34. The two end faces of the second spring 33 respectively abut against the surface of the corresponding first frustum 32, which plays a positioning and limiting role for the second spring 33; the difference between the free length of the first spring 31 and the free length of the second spring 33 is consistent with the sum of the heights of the two oppositely arranged first frustums 32, ensuring that the first spring 31 and the second spring 33 can be in a synchronously stressed initial state after installation. The double-spring nested structure can improve the overall elastic buffering effect by synchronously compressing and resetting the first spring 31 and the second spring 33. It can not only improve the absorption efficiency of instantaneous impact force, but also avoid excessive deformation or fatigue damage to a single spring due to excessive force.

[0041] In a preferred embodiment, see [reference] Figure 2 The distance between the top of the cap 22 and the bottom of the hole seat 21 is the same as the distance between the bottom of the upper cover 3 and the bottom of the ball head seat 5. In other words, the distance between the top of the cap 22 and the bottom of the upper cover 3 is the same as the distance between the bottom of the ball head seat 5 and the bottom of the hole seat 21. By measuring the distance between the top of the cap 22 and the bottom of the upper cover 3, the height parameter of the lower oil chamber 23 can be quickly obtained. This parameter directly corresponds to the filling height of the damping fluid in the lower oil chamber 23, providing a convenient reference for oil filling during production assembly.

[0042] In a preferred embodiment, see [reference] Figure 2 , 3 A first oil seal 221 is provided between the cover 22 and the inner wall of the hole seat 21 to seal the gap between them and prevent the damping fluid in the upper oil cavity 24 from overflowing. A second through hole 222 is provided in the cover 22 for the cue stick 4 to pass through. A movable gap is formed between the wall of the second through hole 222 and the outer wall of the cue stick 4 to provide space for the omnidirectional rotation of the cue stick 4. A second oil seal 223 is provided in the movable gap to further prevent fluid leakage along the mating area between the cue stick 4 and the cover 22. It should be noted that while ensuring the sealing effect, the second oil seal 223 allows the cue stick 4 to wobble within a preset range relative to the cover 22 without affecting the omnidirectional rotation function of the cue stick 4.

[0043] In a preferred embodiment, see [reference] Figure 2 , 34. The ball head seat 5 includes an upper ball cup 52 and a lower ball cup 53. The upper ball cup 52 is fixedly connected to the lower ball cup 53 by fastening screws. Specifically, the lower ball cup 53 has a first cavity 533 that matches the lower part of the ball head 41. The upper ball cup 52 has a second cavity 524 that matches the upper part of the ball head 41. The first cavity 533 and the second cavity 524 are joined together to form the mounting cavity 51. The top of the upper ball cup 52 has a clearance through hole 525 that communicates with the second cavity 524. The clearance through hole 525 provides sufficient space for the omnidirectional rotation of the cue stick 4.

[0044] The upper ball cup 52 has two first fluid passage holes 521, which are connected to two one-way valves 6 in a one-to-one manner to achieve directional flow of damping fluid. The side wall of the upper ball cup 52 has an annular groove 522, and an anti-wear ring 523 is provided in the annular groove 522. The outer circumferential surface of the anti-wear ring 523 fits against the inner wall of the hole seat 21 and can slide relative to it to reduce the sliding friction between the ball head seat 5 and the inner wall of the hole seat 21.

[0045] Furthermore, such as Figure 2 , 3 As shown, the lower ball cup 53 has a second liquid passage hole 531 and a third liquid passage hole 532 connected in sequence, and the diameter of the second liquid passage hole 531 is larger than the diameter of the third liquid passage hole 532; the one-way valve 6 includes a steel ball 61, a third spring 62 and an adjusting screw 63. The steel ball 61 is disposed in the second liquid passage hole 531 and is used to block one end of the third liquid passage hole 532. The adjusting screw 63 is screwed to the end of the second liquid passage hole 531 away from the third liquid passage hole 532. The third spring 62 is sleeved in the second liquid passage hole 531, and its two ends abut against the steel ball 61 and the adjusting screw 63 respectively; a fourth liquid passage hole 631 is provided in the adjusting screw 63. The one-way valve 6, which corresponds to the flow path of the damping fluid from the lower oil chamber 23 to the upper oil chamber 24, has a third fluid passage 532 extending to the bottom of the lower ball cup 53 and communicating with the lower oil chamber 23. The second fluid passage 531 extends upward and communicates with the corresponding first fluid passage 521. When the damping fluid in the lower oil chamber 23 is pressurized, it can overcome the preload force of the third spring 62 in the one-way valve 6, pushing the steel ball 61 away from the third fluid passage 532, so that the third fluid passage 532 is open and the damping fluid flows upward to the upper oil chamber 24. Conversely, when the damping fluid in the flow path flows in the opposite direction, the pressure direction causes the steel ball 61 to further press the third fluid passage 532, which, together with the preload force of the third spring 62, forms a reliable one-way fluid flow effect.

[0046] The one-way valve 6, which corresponds to the path of the damping fluid flowing from the upper oil chamber 24 to the lower oil chamber 23, has a third fluid passage 532 that extends upward and communicates with the corresponding first fluid passage 521. The second fluid passage 531 extends to the bottom of the lower ball cup 53 and communicates with the lower oil chamber 23. The damping fluid in the upper oil chamber 24 can overcome the preload of the third spring 62 and push the steel ball 61 away from the third fluid passage 532. The third fluid passage 532 is open, and the damping fluid flows downward to the lower oil chamber 23. Conversely, when the damping fluid on this flow path flows in the opposite direction, the pressure direction causes the steel ball 61 to further press the third fluid passage 532, which, together with the preload of the third spring 62, forms a reliable one-way fluid flow effect.

[0047] Meanwhile, by screwing in or out the adjusting screw 63, the compression of the third spring 62 can be adjusted, thereby changing the preload of the third spring 62, and ultimately achieving flexible adjustment of the liquid flow start pressure of each one-way valve 6 to adapt to the damping and buffering requirements under different working conditions.

[0048] It should be noted that the wall of the orifice seat 21 is provided with an oil inlet (not shown in the attached drawings), which is connected to the lower oil chamber 23. In practical applications, the one-way conduction characteristic of the one-way valve 6 can be used to allow the damping fluid to fill the lower oil chamber 23 and the upper oil chamber 24 sequentially under pressure. If it is necessary to discharge the damping fluid, a negative pressure suction method can also be used to extract the damping fluid from the lower oil chamber 23 and the upper oil chamber 24 through the oil inlet.

[0049] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A spring-damped vibration-reducing foot pad for a punch press, characterized in that, include: The bottom of the lower pad (1) is provided with a first anti-slip pad (11); The lower seat (2) is located on the upper surface of the lower pad (1); the middle part of the lower seat (2) is provided with an upwardly extending hole seat (21), and the top of the hole seat (21) is provided with a cap (22). The upper cover (3) is located above the lower seat (2), and several first springs (31) are provided between the lower seat (2) and the upper cover (3). The top of the cue stick (4) is fixed to the bottom of the top cover (3), and the lower end of the cue stick (41) is provided with a ball head (41). The ball head seat (5) slides vertically with the inner wall of the hole seat (21); the ball head seat (5) has an installation cavity (51) that matches the ball head (41); the ball rod (4) passes through the cover (22) and extends into the hole seat (21); the ball head (41) and the installation cavity (51) are omnidirectionally rotated; the bottom of the ball head seat (5) and the inner wall of the hole seat (21) enclose to form a lower oil cavity (23), which is used to fill the damping fluid; the top of the ball head seat (5) and the cover (22) enclose to form an upper oil cavity (24), which is used to fill the damping fluid. The ball head seat (5) is equipped with two one-way valves (6) with opposite conduction directions; The upper pad (7) is located above the upper cover (3), and several leveling components (8) are provided between the upper pad (7) and the upper cover (3); a second anti-slip pad (71) is provided on the top of the upper pad (7).

2. The spring-damped vibration-damping foot pad for punch presses according to claim 1, characterized in that, The leveling assembly (8) is provided in three parts, and the three leveling assemblies (8) are arranged in a circular array with the axis of the cover (3) as the center. Each leveling assembly (8) includes a leveling sleeve (81) and a leveling screw (82). The leveling sleeve (81) includes a nut (811) and a screw (812) located at the bottom of the nut (811). A first through hole (813) extending to the screw (812) is opened in the nut (811). The screw (812) is threaded to the cover (3), and the top surface of the nut (811) abuts against the bottom surface of the upper pad (7). The leveling screw (82) passes through the first through hole (813) from bottom to top and is screwed to the upper pad (7).

3. The spring-damped vibration-damping foot pad for punch presses according to claim 1, characterized in that, The first spring (31) is set to six, and the six first springs (31) are arranged in a circular array with the axis of the cover (3) as the center; the upper surface of the lower seat (2) and the lower surface of the cover (3) are provided with a first frustum (32) coaxially arranged corresponding to the first spring (31); the two ends of the first spring (31) are respectively sleeved on the two corresponding first frustums (32).

4. The spring-damped vibration-damping foot pad for punch presses according to claim 3, characterized in that, It also includes six second springs (33); each first truncated cone (32) is provided with a second truncated cone (34) arranged coaxially, each second spring (33) is located inside a first spring (31), and its two ends are respectively sleeved on the two corresponding second truncated cones (34); the difference between the free length of the first spring (31) and the free length of the second spring (33) is consistent with the sum of the heights of the two oppositely arranged first truncated cones (32).

5. The spring-damped vibration-damping foot pad for a punch press according to claim 1, characterized in that, The distance between the top of the cover (22) and the bottom of the hole seat (21) is the same as the distance between the bottom of the top cover (3) and the bottom of the ball head seat (5).

6. The spring-damped vibration-damping foot pad for punch presses according to claim 1, characterized in that, A first oil seal (221) is provided between the inner wall of the cover (22) and the hole seat (21); a second through hole (222) is provided in the cover (22) for the cue stick (4) to pass through, and a movable gap is formed between the hole wall of the second through hole (222) and the outer wall of the cue stick (4), which is used to provide space for the universal rotation of the cue stick (4); a second oil seal (223) is provided in the movable gap.

7. The spring-damped vibration-damping foot pad for a punch press according to claim 1, characterized in that, The ball head seat (5) includes an upper ball cup (52) and a lower ball cup (53). The upper ball cup (52) is fixedly connected to the lower ball cup (53) by fastening screws. The upper ball cup (52) has two first liquid passage holes (521), which are connected to two one-way valves (6) in a corresponding manner. The side wall of the upper ball cup (52) is provided with an annular groove (522), and an anti-wear ring (523) is provided in the annular groove (522).

8. The spring-damped vibration-damping foot pad for a punch press according to claim 7, characterized in that, The lower ball cup (53) has a second liquid passage hole (531) and a third liquid passage hole (532) connected in sequence, and the diameter of the second liquid passage hole (531) is larger than the diameter of the third liquid passage hole (532); the one-way valve (6) includes a steel ball (61), a third spring (62) and an adjusting screw (63). The steel ball (61) is located in the second liquid passage hole (531) and is used to block one end of the third liquid passage hole (532). The adjusting screw (63) is screwed to the end of the second liquid passage hole (531) away from the third liquid passage hole (532). The third spring (62) is sleeved in the second liquid passage hole (531) and its two ends abut against the steel ball (61) and the adjusting screw (63) respectively; a fourth liquid passage hole (631) is opened in the adjusting screw (63).

9. The spring-damped vibration-damping foot pad for a punch press according to claim 1, characterized in that, The lower pad (1) has a groove (12) coaxially arranged with the hole seat (21); the lower seat (2) has a boss (25) coaxially arranged with the hole seat (21), and the boss (25) is embedded in the groove (12).

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