Dynamic balancing device and shockproof high-speed precision punch

Abstract

The application belongs to the technical field of punch, in particular to a dynamic balancing device and a shockproof high-speed precision punch, which comprises a guide block, a gravity block and a balancing mechanism, the guide block is installed in the body of the punch, the gravity block is suitable for connecting the dynamic balancing connecting rod mechanism of the punch, the gravity block is slidingly connected in the interior of the guide block, the balancing mechanism is installed in the interior of the body and close to the position of the gravity block, in the process of the dynamic balancing connecting rod mechanism driving the gravity block to move, the gravity block extrudes the balancing mechanism, so that the gravity block overcomes the dynamic balancing resistance of the balancing block and continues to move at the moment of stamping semi-finished product, better dynamic balancing effect of the punch crankshaft is realized, the device is suitable for high-speed precision punch, and the vibration problem caused by the moment of stamping semi-finished product can be further reduced due to the elastic force of the elastic member.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of punch press, in particular to a dynamic balancing device and a shockproof high-speed precision punch press. BACKGROUND

[0002] Punch press is a stamping press, and the process has the advantages of saving materials and energy, high efficiency, low technical requirements for operators, and making semi-finished products that cannot be achieved by machining through various dies, so its use is becoming more and more widespread. The design principle of punch press is to convert circular motion into linear motion. The main motor drives the flywheel, which drives the gear, crankshaft (or eccentric gear), connecting rod, etc. to achieve the linear motion of the slide block. The movement from the main motor to the connecting rod is circular motion.

[0003] However, in the prior art, when the precision punch press runs at high speed, the vibration problem of the punch press will be more prominent, and under high-speed motion, the crankshaft will be difficult to dynamically balance. When the upper die of the punch press stamps the semi-finished product, the semi-finished product will generate a large force on one side of the upper die, the transmission connecting rod mechanism and the crankshaft. The traditional dynamic balancing relies on the gravity block, and the balancing effect will be greatly reduced in the high-speed precision punch press.

[0004] Therefore, the present application provides a dynamic balancing device and a shockproof high-speed precision punch press. SUMMARY

[0005] In order to overcome the defects in the prior art, the dynamic balancing device is installed on the punch press, which can achieve better dynamic balancing effect on the crankshaft of the punch press under ordinary operation and high-speed operation conditions, and can effectively reduce the vibration problem of the punch press. Therefore, a dynamic balancing device and a shockproof high-speed precision punch press are provided.

[0006] The application solves the technical problems and achieves the purposes, and the technical scheme is as follows: the dynamic balancing device comprises a guide block, the guide block is installed in the body of a punch, a guide hole is formed in the surface of the guide block, and a side surface of the guide block is provided with an opening, the opening is suitable for connecting the guide hole with the outside of the guide block; a gravity block is suitable for connecting a dynamic balancing connecting rod mechanism of the punch, the gravity block is slidingly connected to the inside of the guide hole, and a contact block is arranged on the surface of the gravity block at the position of the opening; a balancing mechanism is installed in the inside of the body and close to the corresponding position of the opening, the balancing mechanism comprises a guide seat, a balancing block and an elastic piece, the guide seat is installed in the inside of the body, the balancing block is slidingly connected to the inside of the guide seat in the direction of the contact block, and the elastic piece is connected between the balancing block and the guide seat, in the movement process of the dynamic balancing connecting rod mechanism driven by the gravity block, the gravity block drives the contact block to press the balancing block and the elastic piece, so that the gravity block overcomes the dynamic balancing resistance of the balancing block and continues to move at the moment of stamping a semi-finished product.

[0007] In some embodiments, the gravity block is provided with a mounting groove at the position of the contact block; a contact block is rotatably connected to the inside of the mounting groove, a first stop block is arranged at the bottom position of the contact block in the inside of the mounting groove; a second stop block is connected to the groove bottom of the mounting groove, a third stop block is connected to the contact block between the first stop block and the second stop block, a first spring is connected between the third stop block and the second stop block, in the initial state, the elastic force of the first spring acts on the third stop block, so that the contact block and the third stop block are rotated to the position where the third stop block abuts against the second stop block, and the opposite side surfaces of the contact block and the balancing block are both inclined surface structures.

[0008] In some embodiments, the inclined surface structure of the contact block comprises a first inclined surface and a second inclined surface, the first inclined surface is located on top of the second inclined surface, and the first inclined surface and the second inclined surface are smoothly connected by a circular arc surface, the surface of the balancing block is provided with a connecting groove, the inside of the connecting groove is provided with an inclined block, the inclined block comprises a third inclined surface and a fourth inclined surface, the third inclined surface is located on the bottom of the fourth inclined surface, and the third inclined surface and the fourth inclined surface are smoothly connected by a circular arc surface; when the gravity block moves away from the crankshaft direction of the punch and punches the semi-finished product, the first inclined surface and the third inclined surface are in contact and extrusion, so that the inclined block and the balancing block move away from the direction of the contact block and extrude the elastic member, and at this time the second stop block blocks the rotation of the third stop block and the contact block, so that the gravity block needs to overcome the resistance of the elastic member to balance the pressure of the semi-finished product in the punching moment; the fourth inclined surface is provided with a rotating wheel, when the gravity block moves towards the crankshaft direction, the second inclined surface contacts the rotating wheel on the fourth inclined surface, the rotating wheel extrudes the contact block, so that the contact block rotates and drives the third stop block to move towards the first stop block, and extrudes the first spring, the elastic force value of the first spring under the preset working condition is less than the elastic force value of the elastic member under the preset working condition.

[0009] In some embodiments, the inside of the connecting groove is rotatably connected with a rotating column, the surface of the rotating column is provided with a plurality of inclined blocks, and the fourth inclined surface of the inclined block is provided with the rotating wheel; the rotating column is adapted to control the rotation to switch the movement of different inclined blocks on the rotating column relative to the position of the gravity block.

[0010] In some embodiments, the connecting groove is designed in a circular arc structure, a plurality of cleaning members are arranged on the inner arc surface of the connecting groove; a connecting hole is arranged in the balancing block near the groove bottom position of the connecting groove, a connecting strip is arranged in the connecting hole, the connecting strip connects a plurality of cleaning members, and the cleaning members are uniformly distributed in the connecting groove; an oil groove is arranged in the inner bottom surface of the connecting groove, the oil groove is used for injecting lubricating oil, and the connecting strip and the cleaning members are oil-absorbing materials, part of the structure of the connecting strip extends into the inside of the oil groove and is immersed in the lubricating oil.

[0011] In some embodiments, one side of the balance block is connected with a connecting block, a fixed plate is connected to the guide seat, and an elastic member is arranged between the connecting block and the fixed plate; an adjusting groove is formed in one side surface of the connecting block relative to the elastic member, an adjusting block is slidably connected inside the adjusting groove, a rotating block is rotatably connected to the surface of the adjusting block, a threaded hole is formed in the groove bottom of the adjusting groove, a bolt is threadedly connected inside the threaded hole, and the bolt is connected with the rotating block, suitable for rotating the bolt to move the bolt inside the threaded hole, simultaneously drive the rotating block and the adjusting block to rotate relative to each other, and move the adjusting block inside the adjusting groove, and adjust the pre-tightening force of the elastic member; the elastic member is a second spring.

[0012] In some embodiments, a limiting disc is connected to the rotating column, limiting grooves are uniformly distributed on the curved surface of the limiting disc, a fixed seat is connected to the balance block near the position of the limiting disc, a moving groove is arranged on one side surface of the fixed seat relative to the limiting groove, and a limiting block is slidably connected inside the moving groove; an electric push rod is connected to one side surface of the fixed seat away from the limiting groove, and the piston rod of the electric push rod penetrates through the fixed seat and is connected with the limiting block.

[0013] In some embodiments, a hydraulic cylinder is further connected between the balance block and the guide seat, a first friction plate is arranged on one side surface of the guide block relative to the balance block, a second friction plate is arranged on the surface of the rotating column, and the surfaces of the first friction plate and the second friction plate are rough surfaces; in an emergency, the hydraulic cylinder is elongated and pushes the balance block to move towards the guide block, so that the first friction plate and the second friction plate are in contact; and / or a third friction plate is connected to the gravity block at the position of the hole.

[0014] In some embodiments, a center hole is formed in the interior of the rotating column, and fixed blocks are uniformly arranged inside the center hole; a vibration plate is arranged on the fixed block, and a ball is arranged inside the center hole; a ring-shaped channel is arranged in the interior of the rotating column near the position of the inclined block; and a heat-conducting fluid is injected into the interior of the ring-shaped channel.

[0015] A dynamic balance shockproof high-speed precision punch press, comprising the above-mentioned dynamic balance device, further comprising a machine body, an upper die, a lower die, a crankshaft and a transmission connecting rod mechanism, the inside of the machine body is provided with the upper die, the lower die, the crankshaft and the transmission connecting rod mechanism, the upper die and the lower die are oppositely arranged and matched, the upper die is connected with the crankshaft through the transmission connecting rod mechanism, and the transmission connecting rod mechanism and the dynamic balance connecting rod mechanism of the punch press are respectively arranged at both sides of the crankshaft; the transmission connecting rod mechanism has multiple groups, and a damping assembly is connected between the transmission connecting rod mechanism and the upper die; the damping assembly comprises a first damping block and a second damping block, the first damping block is connected with the transmission connecting rod mechanism, the second damping block is connected with the upper die, a third spring is arranged between the first damping block and the second damping block, and the first damping block and the second damping block are slidably connected; a sensor can be arranged at the position of the third spring.

[0016] Compared with the prior art, the dynamic balance device and the shockproof high-speed precision punch press provided by the application have the following beneficial effects:

[0017] 1. The dynamic balance device and the shockproof high-speed precision punch press provided by the application, by arranging a guide block, a gravity block and a balance mechanism, when the crankshaft of the punch press rotates, the crankshaft drives the transmission connecting rod mechanism and the dynamic balance connecting rod mechanism on both sides to move, the transmission connecting rod mechanism finally drives the upper die to move up and down, and the dynamic balance connecting rod mechanism drives the gravity block to move up and down, so that the problem of unbalanced stress caused by sudden change of force on the crankshaft is solved, better dynamic balance effect of the punch press crankshaft is achieved, the device is suitable for high-speed precision punch presses, and the vibration problem caused by the instant of stamping semi-finished products can be further reduced due to the elastic force of the elastic member.

[0018] 2. The dynamic balance device and the shockproof high-speed precision punch press provided by the application, by arranging a rotating column, a cleaning member and a connecting strip, the rotating column is controlled to rotate, the rotating column drives multiple inclined blocks on the surface thereof to revolve around the axis of the rotating column, different inclined blocks can be rotated to positions relative to the gravity block, so that the problem of temperature rise of the inclined block caused by repeated friction of the inclined block can be avoided, the problem of temperature rise of the inclined block caused by long-time use of a single inclined block can be avoided, the surface of the inclined block can be cleaned when the cleaning member contacts the inclined block, the lubricating oil in the cleaning member can be wiped to the surface of the inclined block, the surface of the inclined block can be cooled and lubricated, and therefore the surface of the inclined block always has lubricating oil when the inclined block contacts the contact block to work, so that the friction between the inclined block and the contact block is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application is further described below with reference to the drawings:

[0020] Figure 1 is a perspective view of a punch press in an embodiment of the present application;

[0021] Figure 2 is an internal mechanism view of a punch press in an embodiment of the present application;

[0022] Figure 3 is a perspective view of a dynamic balancing device in an embodiment of the present application;

[0023] Figure 4 is a perspective view of a dynamic balancing device in a connected state with a crankshaft in an embodiment of the present application;

[0024] Figure 5 is a top view of a dynamic balancing device in an embodiment of the present application;

[0025] Figure 6 is Figure 5 a sectional view of A-A in FIG. 1;

[0026] Figure 7 is Figure 5 a sectional view of B-B in FIG. 1;

[0027] Figure 8 is Figure 6 a partial enlarged view of C in FIG. 1;

[0028] Figure 9 is Figure 6 a partial enlarged view of D in FIG. 1;

[0029] Figure 10 is a sectional view of a bolt corresponding mechanism in an embodiment of the present application;

[0030] Figure 11 is a perspective view of a rotating column and a limiting disc corresponding mechanism in an embodiment of the present application;

[0031] Figure 12 is a sectional view of a rotating column in an embodiment of the present application.

[0032] In the figure: guide block 100, opening 110, gravity block 120, contact block 130, first inclined surface 131, second inclined surface 132, mounting groove 140, first stop block 150, second stop block 160, third stop block 170, first spring 180,

[0033] balancing mechanism 200, guide seat 210, balancing block 220, elastic member 230, inclined block 240, third inclined surface 250, fourth inclined surface 260, rotating wheel 270,

[0034] rotating column 300, cleaning piece 310, connecting strip 320, oil groove 330, center hole 340, fixing block 350, vibration sheet 360, ball 370, annular channel 380,

[0035] connecting block 400, fixing plate 410, connecting groove 420, adjusting block 430, rotating block 440, bolt 450, second spring 460,

[0036] limiting disc 500, limiting groove 510, fixing seat 520, limiting block 530, electric push rod 540,

[0037] hydraulic cylinder 600, first friction sheet 610, second friction sheet 620, third friction sheet 630,

[0038] machine body 700, upper die 710, lower die 720, crankshaft 730, transmission connecting rod mechanism 740, dynamic balance connecting rod mechanism 750,

[0039] damping assembly 800, first damping block 810, second damping block 820, third spring 830, sensor 840. DETAILED DESCRIPTION

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0041] In order to make the drawing simple, only the parts related to the invention are shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one".

[0042] It should be further understood that the term "and / or" used in the specification and claims of the present application means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0043] In this article, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0045] As Figures 1-12 shown, the embodiment provides a dynamic balancing device, which includes a guide block 100, a gravity block 120 and a balancing mechanism 200, and is used for dynamic balancing of a shockproof high-speed precision punch. When the punch is working, the crankshaft 730 on the punch rotates. Taking a vertical punch as an example, the upper die 710 is located at the top position of the lower die 720, and the crankshaft 730 is located at the top position of the upper die 710. When the crankshaft 730 rotates, the crankshaft 730 will drive the transmission connecting rod mechanism 740 between the crankshaft 730 and the upper die 710 to move, and then the corresponding transmission connecting rod mechanism 740 will drive the upper die 710 to move up and down, so as to realize the mutual separation or closing of the upper die 710 and the lower die 720, and then the semi-finished product located between the upper die 710 and the lower die 720 is subjected to stamping processing. However, during the stamping process, the force of the transmission connecting rod mechanism 740 on the crankshaft 730 is always located at the bottom position of the crankshaft 730, which will cause uneven stress of the crankshaft 730 during rotation. Long-term use will cause damage to the crankshaft 730 or other matched parts. Therefore, the dynamic balancing connecting rod mechanism 750 of the punch is arranged at the top of the crankshaft 730 and connected with the crankshaft 730. The dynamic balancing connecting rod mechanism 750 is connected with the gravity block 120, the gravity block 120 is slidingly connected with the inside of the guide block 100, and the downward gravity of the gravity block 120 acts on the dynamic balancing connecting rod mechanism 750 and finally generates downward force on the crankshaft 730. Therefore, the upward and downward forces on the crankshaft 730 are in a state of basic balance, or the balance is realized by adjusting the position of the parts and the like.

[0046] However, in the prior art, the punch press, i.e. the stamping press, has the advantages of saving materials and energy, high efficiency, low technical requirements for operators, and the ability to produce semi-finished products that cannot be achieved by machining through various molds, so its application is becoming more and more extensive. The design principle of the punch press is to convert circular motion into linear motion. The main motor drives the flywheel, which drives the gear, the crankshaft (or eccentric gear), the connecting rod, etc. to achieve the linear motion of the slide block. The motion from the main motor to the connecting rod is circular motion.

[0047] However, when the precision punch press is running at high speed, the vibration problem of the punch press will be more prominent, and under high-speed motion, the crankshaft 730 will be difficult to dynamically balance. When the upper die 710 of the punch press stamps the semi-finished product, the semi-finished product will exert a large force on one side of the upper die 710, the transmission connecting rod mechanism 740, and the crankshaft 730. The traditional method only relies on the gravity block 120 for dynamic balancing, and the balancing effect will be greatly reduced in the high-speed precision punch press.

[0048] To solve the above technical problems, the embodiment provides an implementation, specifically: a dynamic balancing device, which is installed on the punch press. Under the conditions of ordinary operation and high-speed operation, the dynamic balancing device can achieve better dynamic balancing effect for the crankshaft 730 of the punch press and effectively reduce the vibration problem of the punch press.

[0049] In the embodiment, when the crankshaft 730 of the punch press rotates, the crankshaft 730 will simultaneously drive the transmission connecting rod mechanism 740 and the dynamic balancing connecting rod mechanism 750 on both sides to move. The transmission connecting rod mechanism 740 finally drives the upper die 710 to move up and down, and the dynamic balancing connecting rod mechanism 750 drives the gravity block 120 to move up and down, so that the gravity block 120 slides up and down in the inside of the guide block 100. The gravity block 120 is connected with the contact block 130, one side of the guide block 100 is provided with the opening 110, and the contact block 130 slides up and down in the inside of the opening 110 under the action of the guide block 100. The balancing mechanism 200 is installed in the inside of the machine body 700 of the punch press and located at the position of the opening 110. When the upper die 710 stamps the semi-finished product, the gravity block 120 also drives the contact block 130 to press the balancing mechanism 200 synchronously. After stamping the semi-finished product, the upper die 710 continues to move downward by a small distance, and at this time the contact block 130 has overcome the balancing mechanism 200 to continue to move upward, so the contact block 130 also stops contacting the balancing mechanism 200. Overall, it is ensured that the upper and lower sides of the crankshaft 730 are synchronously stressed at the moment of stamping the semi-finished product, and the dynamic balancing device does not generate force or generates small force on the contact block 130 before and after stamping the semi-finished product. It is ensured that the stress on the crankshaft 730 is in a state of overall balance during the entire stamping process, especially at the moment of stamping.

[0050] Specific balance mechanism 200 includes guide seat 210, balance block 220 and elastic member 230, the guide seat 210 is installed in the inside of the machine body 700, the inside of the guide seat 210 is slidably connected with the balance block 220 towards the contact block 130 direction, the balance block 220 is connected with the elastic member 230 between the guide seat 210, is suitable for the movement of the gravity block 120 in the process of connecting rod of crankshaft 730, the gravity block 120 drives the contact block 130 extrusion balance block 220 and the elastic member 230, to in the moment of stamping semi-product, the gravity block 120 overcomes the dynamic balance resistance of balance block 220 and continues to move;During the working process, when stamping semi-product, contact block 130 will extrude balance block 220, because the elastic member 230 is connected between balance block 220 and guide seat 210, under the condition of the continuous movement of contact block 130, it is needed to extrude and drive the movement of balance block 220, so that balance block 220 extrudes elastic member 230, therefore, in the movement process of contact block 130, it will be extruded by balance block 220, and then contact block 130 will also generate pressure to gravity block 120, and gravity block 120 will extrude crankshaft 730, so that the pressure of balance block 220 is finally converted into the dynamic balance pressure of crankshaft 730, therefore, compared with the dynamic balance of traditional punch press, the dynamic balance of the upper die 710 in the process of moving up and down is met, and the problem that the force acting on crankshaft 730 is suddenly changed and unbalanced when stamping semi-product is solved, better dynamic balance effect of punch press crankshaft 730 is realized, it is suitable for high-speed precision punch press, and because of the elastic force of elastic member 230, the vibration problem caused by the moment of stamping semi-product can be further reduced.

[0051] In one embodiment, the gravity block 120 is provided with a mounting groove 140 at the position of the contact block 130; the contact block 130 is rotatably connected inside the mounting groove 140, and a first stop block 150 is arranged at the bottom of the contact block 130 inside the mounting groove 140; a second stop block 160 is connected at the bottom of the mounting groove 140, a third stop block 170 is connected between the first stop block 150 and the second stop block 160 on the contact block 130, a first spring 180 is connected between the third stop block 170 and the second stop block 160, and in the initial state, the elastic force of the first spring 180 acts on the third stop block 170 to make the contact block 130 and the third stop block 170 rotate to the position where the third stop block 170 abuts against the second stop block 160, and the opposite sides of the contact block 130 and the balance block 220 are both inclined surface structures; in operation, the mounting groove 140 is arranged on the surface of the gravity block 120, the contact block 130 is rotatably connected inside the mounting groove 140, and the third stop block 170 connected with the contact block 130 abuts against the second stop block 160 when the gravity block 120 drives the contact block 130 to move upward and press the balance block 220, thereby limiting the rotation of the contact block 130, so that the contact block 130 presses the balance block 220 to make the balance block 220 move and press the elastic member 230, achieving dynamic balance of the crankshaft 730 at the moment of stamping, and after the semi-finished product is stamped, the gravity block 120 drives the contact block 130 to continue moving upward, so that the contact block 130 is separated from the balance block 220, thereby adapting to the change of the force acting on the upper die 710 due to the sudden stop of the semi-finished product, achieving dynamic balance, and when the gravity block 120 moves downward, i.e., the upper die 710 is separated from the lower die 720, the gravity block 120 drives the contact block 130 to re-press the balance block 220, if the pressing force of the contact block 130 and the balance block 220 is too large at this time, the elastic force of the elastic member 230 needs to be overcome again and move downward, and then the upper die 710 will no longer be subjected to the force of the semi-finished product, so that the crankshaft 730 will be unbalanced again, therefore, the rotatable contact block 130 is designed, and when the gravity block 120 moves downward, the gravity block 120 drives the contact block 130 to press the balance block 220, and under the pressing force of the balance block 220, the contact block 130 drives the third stop block 170 to rotate toward the first stop block 150 and press the first spring 180, and the elastic pressure of the first spring 180 is relatively small, so the movement resistance of the contact block 130 is also small, and finally the contact block 130 and the balance block 220 stop contacting and separating, at this time, under the action of the first spring 180, the contact block 130 rotates to the position where the third stop block 170 abuts against the second stop block 160, and in the subsequent repeated stamping process, the above actions are repeated.

[0052] In one embodiment, the inclined surface structure of the contact block 130 comprises a first inclined surface 131 and a second inclined surface 132, the first inclined surface 131 is located on top of the second inclined surface 132, and the first inclined surface 131 and the second inclined surface 132 are smoothly connected by a circular arc surface, the surface of the balance block 220 is provided with a connecting groove 420, the inside of the connecting groove 420 is provided with an inclined block 240, the inclined block 240 comprises a third inclined surface 250 and a fourth inclined surface 260, the third inclined surface 250 is located on the bottom of the fourth inclined surface 260, and the third inclined surface 250 and the fourth inclined surface 260 are smoothly connected by a circular arc surface; when the gravity block 120 moves away from the direction of the crankshaft 730 and presses the semi-finished product, the first inclined surface 131 and the third inclined surface 250 are in contact and extrusion, so that the inclined block 240 and the balance block 220 move away from the direction of the contact block 130 and extrude the elastic member 230, and at this time, the second stop block 160 blocks the third stop block 170 and the contact block 130 from rotating, so that the gravity block 120 needs to overcome the resistance of the elastic member 230 to balance the pressure of the semi-finished product pressing moment; the fourth inclined surface 260 is provided with a rotating wheel 270, when the gravity block 120 moves towards the direction of the crankshaft 730, the second inclined surface 132 contacts the rotating wheel 270 on the fourth inclined surface 260, the rotating wheel 270 extrudes the contact block 130, so that the contact block 130 rotates and drives the third stop block 170 to move towards the direction of the first stop block 150, and extrudes the first spring 180, the elastic force value of the first spring 180 under the preset working condition is smaller than the elastic force value of the elastic member 230 under the preset working condition.When working, because the elastic force value of the first spring 180 is smaller than the elastic force value of the elastic member 230, when the contact block 130 moves towards the crankshaft 730, the force to be overcome is small, and the dynamic balance of the crankshaft 730 is not greatly affected. By arranging the rotating wheel 270 on the fourth inclined surface 260, when the contact block 130 moves downward, the contact block 130 directly extrudes the rotating wheel 270, and the rotating wheel 270 rolls on the second inclined surface 132 of the contact block 130, which reduces the wear problem of the second inclined surface 132 and the fourth inclined surface 260. As for the relative sliding between the first inclined surface 131 and the third inclined surface 250, long-term use will cause wear problems of the first inclined surface 131 and the third inclined surface 250. Special surface treatment can be performed on the first inclined surface 131 and the third inclined surface 250 to improve the wear resistance of the first inclined surface 131 and the third inclined surface 250. Because the extrusion force between the first inclined surface 131 and the third inclined surface 250 is greater than the extrusion force between the second inclined surface 132 and the fourth inclined surface 260, the rotating wheel 270 is difficult to withstand the above-mentioned pressure, and the fourth inclined surface 260 adopts the roller mode, which is lower in cost than surface treatment of the fourth inclined surface 260.

[0053] In one embodiment, the inside of the connecting groove 420 is rotationally connected with a rotating column 300, the surface of the rotating column 300 is provided with a plurality of inclined blocks 240, and the fourth inclined surface 260 of each inclined block 240 is provided with a rotating wheel 270; the rotating column 300 is suitable for being controlled to rotate, so as to switch the positions of different inclined blocks 240 on the rotating column 300 relative to the position of the gravity block 120; when working, the rotating column 300 is arranged in the inside of the connecting groove 420, and the rotating column 300 is controlled to rotate. The control power can be automatic control of the motor rotation, thereby driving the rotating column 300 to rotate, or the control power can be manual control of the rotating column 300 by workers adjusting the device, the rotating column 300 drives a plurality of inclined blocks 240 on the surface of the rotating column 300 to revolve around the axis of the rotating column 300, so that different inclined blocks 240 can be switched to the position relative to the gravity block 120. The purpose is to avoid wear of a single inclined block 240 due to long-term repeated use, or temperature rise of the inclined block 240 due to repeated friction, so as to avoid the problem of high temperature of the inclined block 240 due to long-term use of a single inclined block 240.

[0054] In one embodiment, the connecting groove 420 is designed in a circular arc structure, and a plurality of cleaning pieces 310 are arranged on the inner arc surface of the connecting groove 420; a connecting hole is arranged on the inner part of the balance block 220 close to the groove bottom of the connecting groove 420, and a connecting strip 320 is arranged in the connecting hole, the connecting strip 320 connects the plurality of cleaning pieces 310, and the cleaning pieces 310 are uniformly distributed in the connecting groove 420; an oil groove 330 is arranged on the inner bottom surface of the connecting groove 420, the oil groove 330 is used to inject lubricating oil, and the connecting strip 320 and the cleaning piece 310 are oil-absorbing materials, part of the structure of the connecting strip 320 extends into the oil groove 330 and is immersed in the lubricating oil; during operation, the cleaning pieces 310 are arranged in the connecting groove 420, the cleaning pieces 310 are connected by the connecting strip 320, one end of the connecting strip 320 extends into the oil groove 330 and is immersed in the lubricating oil, the cleaning piece 310 and the connecting strip 320 are oil-absorbing materials such as cotton rope and cloth strip, and are not limited to this, therefore, when the rotating column 300 rotates, the rotating column 300 drives different inclined blocks 240 to pass through the cleaning pieces 310, the cleaning pieces 310 can clean the surface of the inclined block 240 in time, of course, the connecting strip 320 absorbs the lubricating oil in the oil groove 330, and the lubricating oil penetrates into the cleaning piece 310 through the connecting strip 320, so that the lubricating oil also penetrates into the cleaning piece 310, when the cleaning piece 310 contacts the inclined block 240, not only the surface of the inclined block 240 can be cleaned, but also the lubricating oil in the cleaning piece 310 can be wiped to the surface of the inclined block 240, so that the surface of the inclined block 240 is cooled and lubricated, therefore, when the inclined block 240 contacts the contact block 130 to work in dynamic balance, the surface of the inclined block 240 always has lubricating oil, and the friction between the inclined block 240 and the contact block 130 is reduced.

[0055] In one embodiment, one side of the balance block 220 is connected with a connecting block 400, the guide seat 210 is connected with a fixed plate 410, and an elastic member 230 is arranged between the connecting block 400 and the fixed plate 410; an adjusting groove is formed in one side surface of the connecting block 400 relative to the elastic member 230, an adjusting block 430 is slidably connected in the adjusting groove, a rotating block 440 is rotatably connected to the surface of the adjusting block 430, a threaded hole is formed in the groove bottom of the adjusting groove, a bolt 450 is threadedly connected in the threaded hole, and the bolt 450 is connected with the rotating block 440, suitable for rotating the bolt 450 to move the bolt 450 in the threaded hole, simultaneously drive the rotating block 440 to rotate relative to the adjusting block 430, and move the adjusting block 430 in the adjusting groove, and adjust the pre-tightening force of the elastic member 230; the elastic member 230 is a second spring 460; when working, the stamping force required for stamping different semi-finished products is different, at this time, the same elastic member 230 is adopted, the design elastic force range of the elastic member 230 is fixed, but it is also impossible to specially replace different elastic members 230 to adapt to different types of semi-finished product stamping dynamic balance requirements, and the cost is high, therefore, at this time, the pre-tightening force of the elastic member 230 is controlled to adjust, so that the elastic member 230 can adopt different elastic force range sections in the set range to balance the stamping force, and the specific adjustment process is that the bolt 450 is screwed to rotate and move in the threaded hole, the bolt 450 drives the adjusting block 430 to move in the adjusting groove through the rotating block 440, because the rotating block 440 and the adjusting block 430 can rotate relative to each other, the bolt 450 drives the rotating block 440 to rotate and move synchronously, the rotating block 440 rotates relative to the adjusting block 430, and the rotating block 440 drives the adjusting block 430 to move, because the adjusting block 430 is limited by the adjusting groove, the adjusting block 430 does not rotate, and the adjusting block 430 moves to press the elastic member 230, so that the initial pre-tightening pressure of the elastic member 230 changes, it can be further understood that the pre-tightening force of the elastic member 230 is adjusted when the contact block 130 does not press the inclined block 240, therefore, when the contact block 130 presses the inclined block 240, the inclined block 240 drives the adjusting balance block 220 to move, the balance block 220 drives the connecting block 400 to move, and the connecting block 400 drives the adjusting block 430 to press the elastic member 230, at this time, the relative position between the adjusting block 430 and the connecting block 400 after adjustment is in a stable state, therefore, the overall dynamic balance pressure of the balance block 220 changes when the elastic member 230 after adjustment is further pressed, to adapt to the dynamic balance requirement in the stamping process of different semi-finished products, improve the dynamic balance effect, and the elastic member 230 is preferably a second spring 460, which can further ensure the long-time elastic resistance effect and the dynamic balance stability.

[0056] In one embodiment, the rotating column 300 is connected with a limiting disc 500, the arc surface of the limiting disc 500 is provided with uniformly distributed limiting grooves 510, the balance block 220 is connected with a fixing seat 520 near the position of the limiting disc 500, the fixing seat 520 is provided with a moving groove on the side surface opposite to the limiting groove 510, the moving groove is slidably connected with a limiting block 530, the fixing seat 520 is connected with an electric push rod 540 on the side surface away from the limiting groove 510, and the piston rod of the electric push rod 540 is connected with the limiting block 530 through the fixing seat 520; in working, the inclined block 240 is connected with the rotating column 300, the rotating column 300 is generally controlled to rotate by a motor to switch different inclined blocks 240 in contact with the contact block 130, but when one of the inclined blocks 240 is pressed by the contact block 130, the rotating column 300 must be stable and cannot rotate at this time to ensure that the inclined block 240 is normally moved by the contact block 130 after being pressed, but the pressing force of the inclined block 240 and the contact block 130 is relatively large in a short time, in order to further ensure the stability of the rotating column 300, the electric push rod 540 is controlled to be elongated, the electric push rod 540 drives the limiting block 530 to move in the moving groove, and finally the limiting block 530 moves into the corresponding limiting groove 510 on the surface of the limiting disc 500, the limiting effect of the limiting disc 500 is realized, and since the limiting disc 500 is connected with the rotating column 300 and the limiting block 530 is connected with the balance block 220 through the fixing seat 520, the rotating column 300 is in a stable and fixed relationship with the balance block 220 at this time, when the inclined block 240 is pressed by the contact block 130, the inclined block 240 drives the balance block 220 to move and press the elastic member 230 through the rotating column 300, when other inclined blocks 240 need to be switched, the electric push rod 540 is controlled to be retracted, the limiting block 530 is guided out of the limiting groove 510, at this time, the rotating column 300 can be controlled to normally rotate to switch the inclined blocks 240, and then the above operation is repeated, the rotating column 300 can be limited again to ensure that the newly switched inclined blocks 240 normally work.

[0057] In one embodiment, the balance block 220 is further connected with the guide seat 210 through a hydraulic cylinder 600, and the guide block 100 is provided with a first friction plate 610 on one side surface of the balance block 220, and the surface of the rotating column 300 is provided with a second friction plate 620, and the surfaces of the first friction plate 610 and the second friction plate 620 are rough surfaces. In an emergency, the hydraulic cylinder 600 is elongated and pushes the balance block 220 to move towards the guide block 100, so that the first friction plate 610 and the second friction plate 620 are in contact; and / or, the gravity block 120 is connected with a third friction plate 630 at the position of the opening 110; during operation, the hydraulic cylinder 600 is connected between the balance block 220 and the guide seat 210. Of course, under the condition of meeting the pressure requirement, other commonly used telescopic power devices such as electric push rod can also be selected, and the use of the hydraulic cylinder 600 is not limited to this. The balance block 220 is pushed as a whole by the hydraulic cylinder 600 to move towards the gravity block 120. It should be noted that in this embodiment, the elastic member 230 is used under the condition that there is no pre-tightening pressure in the initial state. Therefore, the balance block 220 has a moving space in both directions, so that when the balance block 220 is pushed by the hydraulic cylinder 600, the balance block 220 can further move towards the gravity block 120. The balance block 220 drives the rotating column 300 and the second friction plate 620 on the surface of the rotating column 300 to move, so that the second friction plate 620 is directly pressed together with the first friction plate 610, and the inclined block 240 on the surface of the rotating column 300 is pressed together with the contact block 130, thereby blocking the movement of the contact block 130 and the movement of the gravity block 120. In an emergency, the balance block 220 can assist in the locking of the crankshaft 730, so as to ensure that the crankshaft 730 can stop moving quickly. In other embodiments, since the contact position between the inclined block 240 and the contact block 130 is basically fixed, if the braking of the crankshaft 730 is realized by the contact between the inclined block 240 and the contact block 130, it is difficult to achieve a relatively ideal braking effect. Therefore, the third friction plate 630 is arranged on the gravity block 120, and the third friction plate 630 can be pressed between the inclined block 240 on the rotating column 300, so that the movement of the gravity block 120 can be immediately locked by the inclined block 240 at any position, thereby improving the braking effect of the crankshaft 730.

[0058] In one embodiment, the inside of the rotating column 300 is provided with a center hole 340, the inside of the center hole 340 is provided with uniformly arranged fixed blocks 350, the fixed blocks 350 are provided with vibration sheets 360, the inside of the center hole 340 is provided with a ball 370, the inside of the rotating column 300 is provided with an annular channel 380 near the position of the inclined block 240, the inside of the annular channel 380 is filled with a heat-conducting fluid, when the rotating column 300 rotates, the ball 370 inside the rotating column 300 will roll inside the center hole 340, when the rotating column 300 is rotated and different inclined blocks 240 are switched, the ball 370 will fall from one vibration sheet 360 to another vibration sheet 360, and then the ball 370 will hit the vibration sheet 360, the vibration sheet 360 will make a sound, reminding the worker to rotate the rotating column 300, if the rotating column 300 is loose and rotates during the stamping process, the ball 370 will fall from one vibration sheet 360 to another vibration sheet 360 and make a sound, timely reminding the worker that the rotating column 300 is abnormal, of course, due to the stamping sound during the stamping process, the worker may not effectively detect the abnormality, therefore, in another embodiment, a sensor can be arranged between the vibration sheet 360 and the fixed block 350 to output an alarm signal, in other embodiments, the inside of the rotating column 300 is provided with an annular channel 380, the inside of the annular channel 380 has a heat-conducting fluid, when the inclined block 240 at one position is repeatedly used and the temperature is relatively high, the inclined block 240 can be cooled in time through the heat-conducting fluid in the annular channel 380, and the heat is introduced to other inclined blocks 240, improving the heat dissipation effect.

[0059] In one embodiment, the dynamic balance shockproof high-speed precision punch press comprises a dynamic balance device, a machine body 700, an upper die 710, a lower die 720, a crankshaft 730 and a transmission connecting rod mechanism 740, the inside of the machine body 700 is provided with the upper die 710, the lower die 720, the crankshaft 730 and the transmission connecting rod mechanism 740, the upper die 710 and the lower die 720 are oppositely arranged and matched, the upper die 710 is connected with the crankshaft 730 through the transmission connecting rod mechanism 740, and the transmission connecting rod mechanism 740 and the dynamic balance connecting rod mechanism 750 of the punch press are respectively arranged at the two sides of the crankshaft 730; during operation, the crankshaft 730 is controlled to rotate, the crankshaft 730 drives the transmission connecting rod mechanism 740 and the dynamic balance connecting rod mechanism 750 to move synchronously and oppositely, the transmission connecting rod mechanism 740 drives the upper die 710 to move, the distance between the upper die 710 and the lower die 720 changes, and stamping is realized, and the dynamic balance connecting rod mechanism 750 drives the dynamic balance device to operate, so as to realize the dynamic balance effect of the crankshaft 730.

[0060] In one embodiment, the transmission linkage 740 has a plurality of groups, and a damping assembly 800 is connected between the transmission linkage 740 and the upper die 710; the damping assembly 800 includes a first damping block 810 and a second damping block 820, the first damping block 810 is connected with the transmission linkage 740, the second damping block 820 is connected with the upper die 710, a third spring 830 is arranged between the first damping block 810 and the second damping block 820, and the first damping block 810 and the second damping block 820 are in sliding connection. The third spring 830 can be provided with a pressure sensor 840; in operation, by arranging the damping assembly 800 between the upper die 710 and the transmission linkage 740, the high-speed precision punch further has a dynamic balance effect and a basic damping effect, and through the damping assembly 800, the punch can further have a damping effect, and the specific working process is that when the transmission linkage 740 drives the first damping block 810 to move up and down, the first damping block 810 drives the second damping block 820 to move through the third spring 830, and the second damping block 820 in turn drives the upper die 710 to move, through the mutual sliding between the first damping block 810 and the second damping block 820 and the action of the third spring 830, further damping effect in the stamping process is realized, and the damping effect in the stamping process of the punch is improved. In other embodiments, a sensor 840 can be arranged between the first damping block 810 and the second damping block 820 to detect the pressure or relative distance between the first damping block 810 and the second damping block 820, so that in an abnormal situation, when the distance between the first damping block 810 and the second damping block 820 exceeds the preset value, or the pressure on the third spring 830 exceeds the preset value, emergency braking is performed to ensure production safety.

[0061] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A dynamic balancing device, characterized in that, include: The guide block is installed inside the punch press body. The surface of the guide block has a guide hole, and the side of the guide block has an opening suitable for communicating with the outside of the guide block. The gravity block is suitable for connecting the dynamic balance linkage mechanism of the punch press. The gravity block is slidably connected inside the guide hole, and the surface of the gravity block is provided with a contact block at the opening position. The balancing mechanism is installed inside the machine body and close to the corresponding position of the opening. The balancing mechanism includes a guide seat, a balance block and an elastic element. The guide seat is installed inside the machine body. The balance block is slidably connected inside the guide seat towards the contact block. An elastic element is connected between the balance block and the guide seat. It is suitable for the gravity block to drive the contact block to press the balance block and the elastic element during the dynamic balancing linkage mechanism to drive the gravity block to move. So that at the moment of stamping the semi-finished product, the gravity block overcomes the dynamic balance resistance of the balance block and continues to move. The gravity block has a mounting groove at the contact block position; the contact block is rotatably connected inside the mounting groove, and a first stop is provided at the bottom of the contact block inside the mounting groove; a second stop is connected at the bottom of the mounting groove, and a third stop is connected on the contact block between the first stop and the second stop. A first spring is connected between the third stop and the second stop. In the initial state, the elastic force of the first spring acts on the third stop, so that the contact block and the third stop rotate to the position where the third stop and the second stop collide. The opposite sides of the contact block and the balance block are both inclined structures. The inclined structure of the contact block includes a first inclined surface and a second inclined surface. The first inclined surface is located at the top of the second inclined surface, and the first and second inclined surfaces are smoothly transitioned by an arc surface. The surface of the balance block is provided with a connecting groove, and the inside of the connecting groove is provided with an inclined block. The inclined block includes a third inclined surface and a fourth inclined surface. The third inclined surface is located at the bottom of the fourth inclined surface, and the third and fourth inclined surfaces are smoothly transitioned by an arc surface. A rotating wheel is provided on the fourth inclined surface. When the gravity block moves toward the crankshaft, the rotating wheel on the second inclined surface comes into contact with the rotating wheel on the fourth inclined surface. The rotating wheel squeezes the contact block, causing the contact block to rotate and drive the third stop block to move toward the first stop block, and squeezes the first spring. Under the preset working conditions, the elastic force value of the first spring is less than the elastic force value of the elastic element under the preset working conditions. The internal rotatable connection of the connecting groove is a rotating column, and the surface of the rotating column is provided with multiple inclined blocks, and the fourth inclined surface of each inclined block is provided with a rotating wheel; Suitable for controlling the rotation of the rotating column to switch the movement of different inclined blocks on the rotating column to the position of the gravity block relative to the balance block.

2. The dynamic balancing device according to claim 1, characterized in that, When the gravity block moves away from the crankshaft direction of the punch press and presses the semi-finished product, the first inclined surface and the third inclined surface come into contact and squeeze, so that the inclined block and the balance block move away from the contact block direction and squeeze the elastic element. At this time, the second stop block blocks the rotation of the third stop block and the contact block, so that the gravity block needs to overcome the resistance of the elastic element to balance the instantaneous pressure of the semi-finished product.

3. A dynamic balancing device according to claim 2, characterized in that, The connecting groove has an arc-shaped structure design, and multiple cleaning components are provided on the inner arc-shaped surface of the connecting groove; The balance block has a connecting hole near the bottom of the connecting groove, and a connecting bar is provided inside the connecting hole, which connects multiple cleaning parts. The cleaning components are evenly distributed inside the connecting groove; An oil groove is provided at the bottom of the connecting groove. The inside of the oil groove is used to inject lubricating oil. Both the connecting bar and the cleaning component are oil-absorbing materials. Part of the connecting bar extends into the inside of the oil groove and is immersed in the lubricating oil.

4. A dynamic balancing device according to claim 1, characterized in that, One side of the balance block is connected to a connecting block, the guide seat is connected to a fixing plate, and an elastic element is provided between the connecting block and the fixing plate; The connecting block has an adjustment groove on one side relative to the elastic element. An adjustment block is slidably connected inside the adjustment groove. A rotating block is rotatably connected to the surface of the adjustment block. The bottom of the adjustment groove has a threaded hole. A bolt is threadedly connected inside the threaded hole. The bolt is connected to the rotating block and is adapted to rotate the bolt so that the bolt moves inside the threaded hole. At the same time, the rotating block and the adjustment block rotate relative to each other, and the adjustment block moves inside the adjustment groove to adjust the preload of the elastic element. The elastic element is a second spring.

5. A dynamic balancing device according to claim 1, characterized in that, The rotating column is connected to a limiting plate, and the limiting plate has evenly distributed limiting grooves on its arc surface. A fixed seat is connected to the balance block near the limiting plate. The fixed seat has a moving groove on one side relative to the limiting groove. A limiting block is slidably connected inside the moving groove. An electric push rod is connected to the side of the fixed seat away from the limiting groove, and the piston rod of the electric push rod passes through the fixed seat and is connected to the limiting block.

6. A dynamic balancing device according to claim 5, characterized in that, A hydraulic cylinder is also connected between the balance block and the guide seat. The guide block is provided with a first friction plate on one side opposite to the balance block, and the surface of the rotating column is provided with a second friction plate. The surfaces of the first friction plate and the second friction plate are rough. In case of emergency, the hydraulic cylinder extends and pushes the balance block toward the guide block so that the first friction plate and the second friction plate come into contact. And / or, a third friction plate is connected to the gravity block at the opening position.

7. A dynamic balancing device according to claim 6, characterized in that, The rotating column has a central hole inside, and the central hole is provided with uniformly arranged fixing blocks. The fixing block is equipped with a vibrating plate, and a ball is disposed inside the central hole; The rotating column has an annular channel located near the inclined block; the annular channel is filled with heat-conducting fluid.

8. A dynamic balancing, vibration-damping, high-speed precision punch press, comprising the dynamic balancing device described in any one of claims 1-7, characterized in that, It also includes a body, an upper mold, a lower mold, a crankshaft, and a transmission connecting rod mechanism. The upper mold, the lower mold, the crankshaft, and the transmission connecting rod mechanism are arranged inside the body. The upper mold and the lower mold are arranged opposite to each other and are adapted to each other. The upper mold is connected to the crankshaft through the transmission connecting rod mechanism. The transmission connecting rod mechanism and the dynamic balancing connecting rod mechanism are respectively arranged on both sides of the crankshaft. The transmission linkage mechanism has multiple sets, and a shock-absorbing component is connected between the transmission linkage mechanism and the upper mold. The shock absorption assembly includes a first shock absorption block and a second shock absorption block. The first shock absorption block is connected to the transmission linkage mechanism, and the second shock absorption block is connected to the upper mold. A third spring is provided between the first shock absorption block and the second shock absorption block, and the first shock absorption block and the second shock absorption block are slidably connected. A sensor may be installed at the location of the third spring.

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