A dynamic balancing device for high-speed precision punching machine

Abstract

The present invention belongs to the field of precision punching machines, and particularly relates to a dynamic balancing device for high-speed precision punching machines; the dynamic balancing device comprises a first shell, a crank assembly, a dynamic balancing assembly and a connecting rod assembly; the two ends of the crank assembly are rotatably connected to the inner walls on both sides of the first shell; the dynamic balancing assembly comprises a hollow tube, a first hinge box, a first hinge rod, and a balancing airbag; the hollow tube is fixedly mounted on the top inner wall of the first shell, the first hinge box is located in the hollow tube, the first hinge rod is fixedly mounted in the first hinge box, and the first hinge rod is rotatably connected to a first hinge block through a bearing; the bottom of the balancing airbag is fixedly mounted on the top of the first hinge box. The present invention improves the dynamic balancing effect and reduces the overall vibration of the device; it realizes the emergency braking function, which can reduce continuous damage when the mold is working.

Description

Technical Field

[0001] The invention belongs to the field of precision punching machines, and in particular relates to a dynamic balancing device for a high-speed precision punching machine. Background Art

[0002] The punch press mainly relies on the rotation of the crank to drive the connecting rod to rotate and reciprocate, and then drive the upper mold to move up and down linearly. The connecting rod will generate inertia and vibration when working, which will directly affect the stability of the entire device and even cause the upper and lower molds to be misaligned.

[0003] Traditional punching machines install balancing blocks on the sliders on both sides of the punching assembly to offset the inertial force generated when the connecting rod is working. However, due to the heavy weight of the punching assembly and the large inertial force generated during operation, the inertia borne by the balancing block is often greater than its own bearing limit, resulting in poor dynamic balancing effect. It also accelerates the wear of the balancing block, increases the replacement frequency, and increases maintenance costs.

[0004] During the stamping process, if an employee accidentally touches the mold, the mold needs to be stopped urgently, but the existing punching machines directly use clutch brakes for braking. Due to inertia, it takes a long time to stop the work through the clutch brake, and the stamping work cannot be stopped in time, causing continuous harm to employees. Summary of the invention

[0005] In view of the above problems, the present invention provides a dynamic balancing device for a high-speed precision punching machine, the dynamic balancing device comprising a first housing, a crank assembly, a dynamic balancing assembly and a connecting rod assembly; the two ends of the crank assembly are rotatably connected to the inner walls of both sides of the first housing respectively;

[0006] The dynamic balancing assembly includes a hollow tube, a first hinge box, a first hinge rod, and a balancing airbag; the hollow tube is fixedly mounted on the top inner wall of the first shell, the first hinge box is located in the hollow tube, the first hinge rod is fixedly mounted in the first hinge box, and the first hinge rod is rotatably connected to a first hinge block via a bearing; the bottom of the balancing airbag is fixedly mounted on the top of the first hinge box, and the top two sides of the balancing airbag are fixedly mounted on the inner walls on both sides of the hollow tube, and an air vent is provided on the top of the balancing airbag, and a dustproof net is provided on the top of the hollow tube;

[0007] The connecting rod assembly includes a connecting rod limit block and an upper connecting rod; the connecting rod limit block is rotatably connected to the crank assembly via a bearing, one end of the upper connecting rod is fixedly mounted on the connecting rod limit block, and the other end of the upper connecting rod passes through the hollow tube and is rotatably connected to the first hinged rod via a bearing.

[0008] Preferably, the dynamic balancing assembly further comprises two sets of first sliding blocks;

[0009] A group of first sliding grooves are respectively opened on the inner walls on both sides of the hollow tube, one end of the two groups of the first sliding blocks are respectively slidably connected in the two groups of the first sliding grooves, and the other ends of the two groups of the first sliding blocks are respectively fixedly installed on the two side walls of the first hinge box.

[0010] Preferably, the crank assembly comprises a first rotating rod, a second rotating rod, a connecting rod limiting rod, two sets of rotating rod connecting blocks and two sets of fixing screws;

[0011] One end of the first rotating rod is rotatably connected to the inner wall of one side of the first shell through a bearing seat, and one end of the second rotating rod away from the bearing seat passes through the outside of the first shell and is equipped with a clutch brake, and the support frame of the clutch brake is fixedly installed on the outer wall of one side of the first shell close to the second rotating rod; the two groups of rotating rod connecting blocks are respectively fixedly installed on the other end of the first rotating rod and the second rotating rod; and a group of cavities are respectively opened in the two groups of rotating rod connecting blocks, a group of first threaded holes are respectively opened at the top of the two groups of cavities, and a group of second threaded holes are respectively opened at the bottom of the two groups of cavities; the two ends of the connecting rod limiting rod respectively pass through the two groups of cavities, and the two groups of fixing screws are respectively threadedly connected to the two groups of the first threaded holes, and one end of the two groups of fixing screws both pass through the bottom of the connecting rod limiting rod and are respectively threadedly connected to the two groups of the second threaded holes; the other end of the fixing screw passes through the outside of the rotating rod connecting block;

[0012] A bearing ring is rotatably connected to the connecting rod limiting rod.

[0013] Preferably, the dynamic balancing device further comprises a power assembly, and the power assembly comprises a servo motor, a first mounting plate, a first transmission rod and a transmission mechanism;

[0014] The first mounting plate is fixedly mounted in the first housing; the servo motor is fixedly mounted on an outer wall of the first housing close to the first rotating rod; the output end of the servo motor passes through the first housing and is connected to the first transmission rod through a coupling; the other end of the first transmission rod is rotatably connected to the first mounting plate through a bearing seat; the first transmission rod is connected to the first rotating rod through a transmission mechanism;

[0015] The transmission mechanism includes a belt and two sets of pulleys; the two sets of pulleys are fixedly mounted on the first rotating rod and the first transmission rod respectively; the two ends of the belt are respectively sleeved on the two sets of pulleys, and the two sets of pulleys are connected through the belt transmission.

[0016] Preferably, the dynamic balancing device further comprises a brake assembly, and the brake assembly comprises a pneumatic clamp, a second transmission rod, an engagement mechanism and a second mounting plate;

[0017] The second mounting plate is fixedly installed in the first shell, and the two ends of the second transmission rod are rotatably connected to the inner wall of the first shell on the side away from the power assembly and the second mounting plate through a group of bearing seats; the second transmission rod is meshed with the second rotating rod through an engagement mechanism; the pneumatic clamp is fixedly installed on the top inner wall of the first shell.

[0018] Preferably, the meshing mechanism comprises a transmission gear and a driven gear;

[0019] The transmission gear is fixedly mounted on the second rotating rod, the driven gear is fixedly mounted on the second transmission rod, and the driven gear is meshingly connected to the transmission gear; the two groups of jaws of the pneumatic clamp are respectively located on both sides of the driven gear.

[0020] Preferably, the dynamic balancing device further comprises a stamping assembly, wherein the stamping assembly comprises a stamping transmission block, two sets of second sliders and two sets of balancing blocks;

[0021] The stamping transmission block is arranged in the first shell, one end of the stamping transmission block passes through the bottom of the first shell and is fixedly installed with an upper mold base; a group of second sliding grooves are respectively opened on the inner walls on both sides of the first shell, one end of two groups of second sliding blocks are respectively slidably connected in the two groups of second sliding grooves, and the other ends of the two groups of second sliding blocks are respectively fixedly installed on the two side walls of the stamping transmission block; the two groups of balancing blocks are respectively mounted on one end of the two groups of second sliding blocks close to the second sliding groove.

[0022] Preferably, a group of oil filling ports are respectively arranged on the outer walls on both sides of the first housing, and the two groups of oil filling ports are respectively connected to the two groups of the second sliding grooves;

[0023] A pyrolytic human body sensing switch is fixedly installed on the upper mold base.

[0024] Preferably, the connecting rod assembly further comprises a lower connecting rod, a second hinge box, a second hinge rod and a second hinge block;

[0025] The second hinge box is fixedly mounted on the top of the stamping transmission block, the second hinge rod is fixedly mounted in the second hinge box, and the second hinge block is rotatably connected to the second hinge rod through a bearing; the connecting rod limit block is fixedly mounted on the bearing ring, and the connecting rod limit block is rotatably connected to the connecting rod limit rod through the bearing ring, one end of the lower connecting rod is fixedly mounted on the connecting rod limit block, and the other end of the lower connecting rod passes through the second hinge box and is fixedly mounted on the second hinge block.

[0026] Preferably, a control panel is fixedly mounted on an outer wall of one side of the first shell, and the control panel is electrically connected to the power assembly, the brake assembly, the clutch brake and the pyroelectric human body sensing switch through wires.

[0027] The present invention has the following advantages:

[0028] 1. The upper connecting rod pushes the first hinge box to reciprocate up and down, and drives the balance airbag to shrink continuously, so as to achieve the effect of shock absorption. The vibration generated by the connecting rod assembly during movement will not act completely on the first shell, and the use of two sets of balance blocks further enhances the quality of dynamic balance.

[0029] 2. When the human body accidentally touches the working stamping die, the thermal release human body sensing switch will sense it immediately, and then the pneumatic clamp will clamp the driven gear, causing the crank assembly to stop working immediately, and then cooperate with the clutch brake to further shorten the braking time, realize the emergency braking function, reduce the harm to employees, and reduce safety hazards.

[0030] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic structural diagram of a dynamic balancing device according to an embodiment of the present invention is shown;

[0033] Figure 2 A schematic structural diagram of a crank assembly according to an embodiment of the present invention is shown;

[0034] Figure 3 A schematic diagram of the structure of a power assembly according to an embodiment of the present invention is shown;

[0035] Figure 4 A schematic structural diagram of a brake assembly according to an embodiment of the present invention is shown;

[0036] Figure 5 A schematic structural diagram of a dynamic balancing assembly according to an embodiment of the present invention is shown;

[0037] Figure 6 A cross-sectional schematic diagram of a first hinge box according to an embodiment of the present invention is shown;

[0038] Figure 7 A schematic structural diagram of a stamping assembly according to an embodiment of the present invention is shown;

[0039] Figure 8 A schematic structural diagram of a connecting rod assembly according to an embodiment of the present invention is shown;

[0040] Fig. 9 A left side schematic diagram of the connection between a connecting rod assembly and a crank assembly according to an embodiment of the present invention is shown.

[0041] In the figure: 1. first housing; 2. control panel; 3. crank assembly; 301. first rotating rod; 302. second rotating rod; 303. rotating rod connecting block; 304. fixing screw; 305. connecting rod limiting rod; 306. bearing ring; 4. power assembly; 401. servo motor; 402. first mounting plate; 403. first transmission rod; 404. transmission mechanism; 4041. pulley; 4042. belt; 5. brake assembly; 501. pneumatic clamp; 502. second transmission rod; 503. meshing mechanism; 5031. transmission gear; 5032. driven gear; 504. second mounting plate; 505. rubber brake pad; 6. dynamic balance Balance assembly; 601, hollow tube; 602, first hinge box; 603, first hinge rod; 604, first slide slot; 605, first slider; 606, balance airbag; 607, dust net; 608, first hinge block; 7, clutch brake; 8, connecting rod assembly; 801, connecting rod limit block; 802, upper connecting rod; 803, lower connecting rod; 804, second hinge box; 805, second hinge rod; 806, second hinge block; 9, stamping assembly; 901, stamping transmission block; 902, second slide slot; 903, second slider; 904, balance block; 905, oil filling port; 10, upper mold base; 11, thermal release human body sensing switch. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The embodiment of the present invention provides a dynamic balancing device for a high-speed precision punching machine, the dynamic balancing device comprising a first housing 1, a crank assembly 3, a power assembly 4, a dynamic balancing assembly 6, a clutch brake 7, a connecting rod assembly 8 and a punching assembly 9. For example, Figure 1 As shown, the power assembly 4 is installed in the first housing 1, and the power assembly 4 is transmission-connected to the crank assembly 3 via a transmission mechanism; the power assembly 4 is used to provide power to the crank assembly 3 so that the crank assembly 3 can rotate.

[0044] The connecting rod assembly 8 is hinged on the crank assembly 3, one end of the connecting rod assembly 8 is installed in the dynamic balancing assembly 6, and the other end is fixedly installed on the top of the stamping assembly 9. The connecting rod assembly 8 mainly has a transmission function, which can convert the rotational motion of the crank assembly 3 into up and down reciprocating motion, and drive the stamping assembly 9 to realize the stamping work.

[0045] One end of the crank assembly 3 is rotatably connected to the inner wall of one side of the first housing 1, and the other end of the crank assembly 3 passes through the outside of the first housing 1 and is installed on the clutch brake 7; the rotation of the crank assembly 3 can drive the upper mold to reciprocate up and down, thereby achieving the purpose of continuous high-speed stamping. The support frame of the clutch brake 7 is fixedly installed on the outer wall of the first housing 1; the clutch brake 7 is used to shorten the time for the crank assembly 3 to go from high-speed rotation to complete stillness.

[0046] The dynamic balancing assembly 6 is mounted on the top inner wall of the first housing 1 , and the dynamic balancing assembly 6 is located above the crank assembly 3 ; the dynamic balancing assembly 6 is used to reduce the vibration of the entire device during operation.

[0047] The dynamic balancing device further includes a brake assembly 5, which is installed in the first housing 1 and is located on a side of the dynamic balancing assembly 6 away from the power assembly 4; and the brake assembly 5 is meshed and connected with the crank assembly 3 through an engagement mechanism. The brake assembly 5 can stop the rotation of the crank assembly 3 in an emergency under special circumstances.

[0048] The punching assembly 9 is installed in the first housing 1, and the bottom of the punching assembly 9 penetrates to the outside of the first housing 1, and the punching assembly 9 is located below the crank assembly 3. The punching assembly 9 is used to complete the punching work of the entire device.

[0049] A control panel 2 is fixedly mounted on the outer wall of one side of the first housing 1, and the control panel 2 is electrically connected to the power assembly 4, the brake assembly 5 and the clutch brake 7 through wires. The working states of the power assembly 4, the brake assembly 5 and the clutch brake 7 can be controlled through the control panel 2.

[0050] While the crank assembly 3 rotates, the connecting rod assembly 8 is used to push the balancing mechanism in the dynamic balancing assembly 6 to reciprocate up and down, thereby achieving a shock-absorbing effect. The vibration generated by the connecting rod assembly 8 during movement will not act completely on the first housing 1, further enhancing the quality of dynamic balancing. By utilizing the meshing connection between the brake assembly 5 and the crank assembly 3, when the human body accidentally touches the working stamping die, the crank assembly 3 is urgently stopped from rotating through the brake assembly 5, thereby quickly stopping the stamping work, and then cooperating with the clutch brake 7 to further shorten the braking time, realize the function of emergency braking, reduce continuous damage to employees, and reduce safety hazards. The crank assembly 3 is set as a detachable structure, which reduces the later maintenance cost and shortens the maintenance time.

[0051] The crank assembly 3 includes a first rotating rod 301, a second rotating rod 302, a connecting rod limiting rod 305, two sets of rotating rod connecting blocks 303 and two sets of fixing screws 304. Figure 2 As shown, one end of the first rotating rod 301 is rotatably connected to the inner wall of one side of the first housing 1 through a bearing seat, and one end of the second rotating rod 302 away from the bearing seat passes through the outside of the first housing 1 and is installed in the clutch brake 7. Two groups of rotating rod connecting blocks 303 are fixedly installed on the other ends of the first rotating rod 301 and the second rotating rod 302 respectively; and a group of cavities are respectively opened in the two groups of rotating rod connecting blocks 303, a group of first threaded holes are respectively opened at the top of the two groups of cavities, and a group of second threaded holes are respectively opened at the bottom of the two groups of cavities, and the two ends of the connecting rod limiting rod 305 are respectively passed through the two groups of cavities, and the two groups of fixing screws 304 are respectively threadedly connected in the two groups of the first threaded holes, and one end of the two groups of fixing screws 304 are both passed through the bottom of the connecting rod limiting rod 305, and are respectively threadedly connected in the two groups of the second threaded holes; the other ends of the two groups of fixing screws 304 are respectively passed through the outside of the two groups of rotating rod connecting blocks 303. The connecting rod limiting rod 305 is rotatably connected with a bearing ring 306 .

[0052] When the first rotating rod 301 and the second rotating rod 302 rotate, the connecting rod limiting rod 305 is driven to rotate along the central axis of the first rotating rod 301, so that the rotation can be converted into a reciprocating force. Thus, the punching assembly 9 can be driven to reciprocate up and down through the connecting rod assembly 8. When the connecting rod limiting rod 305 needs to be replaced, the two sets of fixing screws 304 are first pulled out from the threaded holes, and then the connecting rod limiting rod 305 is directly pulled out from the rotating rod connecting block 303, without replacing the entire crank assembly 3, which not only reduces the cost but also shortens the replacement time.

[0053] The power assembly 4 includes a servo motor 401, a first mounting plate 402, a first transmission rod 403 and a transmission mechanism 404. Figure 3As shown, the first mounting plate 402 is fixedly mounted in the first housing 1; the servo motor 401 is fixedly mounted on the outer wall of the first housing 1 near the first rotating rod 301, the output end of the servo motor 401 penetrates into the first housing 1, and is connected to the first transmission rod 403 through a coupling; the other end of the first transmission rod 403 is rotatably connected to the first mounting plate 402 through a bearing seat; the first transmission rod 403 is connected to the first rotating rod 301 through a transmission mechanism 404. The servo motor 401 is electrically connected to the control panel 2 through wires.

[0054] The transmission mechanism 404 includes a belt 4042 and two groups of pulleys 4041. The two groups of pulleys 4041 are fixedly mounted on the first rotating rod 301 and the first transmission rod 403 respectively; the two ends of the belt 4042 are respectively sleeved on the two groups of pulleys 4041, and the two groups of pulleys 4041 are connected by the belt 4042.

[0055] The servo motor 401 drives the first transmission rod 403 to rotate, and the transmission mechanism 404 drives the first rotating rod 301 to rotate, thereby driving the crank assembly 3 to rotate as a whole, thereby providing power for the crank assembly 3.

[0056] The brake assembly 5 includes a pneumatic clamp 501, a second transmission rod 502, an engagement mechanism 503 and a second mounting plate 504. Figure 4 As shown, the second mounting plate 504 is fixedly mounted in the first housing 1, and the two ends of the second transmission rod 502 are rotatably connected to the inner wall of the first housing 1 away from the power assembly 4 and the second mounting plate 504 through a set of bearing seats; the second transmission rod 502 is meshed and connected with the second rotating rod 302 through the meshing mechanism 503. The pneumatic clamp 501 is fixedly mounted on the top inner wall of the first housing 1, and the pneumatic clamp 501 is electrically connected to the control panel 2 through wires.

[0057] The meshing mechanism 503 includes a transmission gear 5031 and a driven gear 5032. The transmission gear 5031 is fixedly mounted on the second rotating rod 302, and the driven gear 5032 is fixedly mounted on the second transmission rod 502, and the driven gear 5032 is meshedly connected to the transmission gear 5031. The two groups of jaws of the pneumatic clamp 501 are respectively located on both sides of the driven gear 5032.

[0058] Preferably, a set of rubber brake pads 505 are fixedly installed on one side of the two sets of jaws of the pneumatic clamp 501 close to the driven gear 5032. The rubber brake pads 505 can increase the friction of the two sets of jaws of the pneumatic clamp 501, thereby improving the efficiency of emergency braking and reducing the wear on the jaws.

[0059] A pyroelectric human body sensing switch 11 is fixedly installed at the bottom of the stamping component 9 , and the pyroelectric human body sensing switch 11 is electrically connected to the control panel 2 through an electric wire.

[0060] When an employee accidentally touches the mold with his hand while the device is working, the heat energy of the human body will be sensed by the pyroelectric human body sensing switch 11 first, and then the pyroelectric human body sensing switch 11 will send a signal to the control panel 2. First, the control panel 2 stops the servo motor 401 and turns on the pneumatic clamp 501, so that the two sets of jaws of the pneumatic clamp 501 can quickly clamp the driven gear 5032, causing it to stop rotating immediately, so that the transmission gear 5031 also stops rotating, so that the crank assembly 3 as a whole also stops rotating, and the stamping assembly no longer reciprocates up and down, and then the clutch brake 7 is started, and the second rotating rod 302 is clamped by the clutch brake 7, so as to reduce the pressure of the pneumatic clamp 501 and improve the efficiency of emergency braking. It avoids harm to employees and reduces safety hazards. At the same time, when the stamping work needs to be stopped urgently due to special reasons, the control panel 2 can also be manually controlled to make the pneumatic clamp 501 work.

[0061] The dynamic balancing assembly 6 includes a hollow tube 601, a first hinge box 602, a first hinge rod 603, a balancing airbag 606 and two sets of first sliders 605. Figure 5 and Figure 6 As shown, the hollow tube 601 is fixedly mounted on the top inner wall of the first shell 1, a dustproof net 607 is arranged on the top of the hollow tube 601, and a group of first sliding grooves 604 are respectively opened on the inner walls on both sides of the hollow tube 601; the first hinge box 602 is located in the hollow tube 601, the first hinge rod 603 is fixedly mounted in the first hinge box 602, and the first hinge block 608 is rotatably connected to the first hinge rod 603 through a bearing; one end of two groups of the first sliding blocks 605 are respectively slidably connected in two groups of the first sliding grooves 604, and the other ends of the two groups of the first sliding blocks 605 are respectively fixedly mounted on the two side walls of the first hinge box 602. The bottom of the balancing airbag 606 is fixedly mounted on the top of the first hinge box 602, and the two sides of the top of the balancing airbag 606 are fixedly mounted on the inner walls on both sides of the hollow tube 601, and the top of the balancing airbag 606 is opened with air holes.

[0062] When the crank assembly 3 drives the connecting rod assembly 8 to reciprocate up and down, the top of the connecting rod assembly 8 will exert pressure on the first hinge box 602. When the connecting rod assembly 8 is upward, it will push the first hinge box 602 to press the balancing airbag 606 upward, so that the gas inside the balancing airbag 606 is discharged through the air vents and the dustproof net 607. At this time, the balancing airbag 606 will be compressed upward, thereby achieving a shock absorption effect. The vibration generated by the connecting rod assembly 8 during movement will not completely act on the first shell 1, thereby improving the dynamic balancing effect.

[0063] The punching assembly 9 includes a punching transmission block 901, two sets of second sliders 903 and two sets of balancing blocks 904. Figure 7 As shown, the punching transmission block 901 is arranged in the first housing 1, one end of the punching transmission block 901 penetrates to the bottom of the first housing 1, and the punching transmission block 901 is fixedly installed with the upper mold base 10. A set of second slide grooves 902 are respectively opened on the inner walls on both sides of the first housing 1, one end of two sets of second sliders 903 are respectively slidably connected in the two sets of second slide grooves 902, and the other ends of the two sets of second sliders 903 are respectively fixedly installed on the two side walls of the punching transmission block 901. The two sets of balancing blocks 904 are respectively sleeved on one end of the two sets of second sliders 903 close to the second slide groove 902.

[0064] Preferably, a group of oil injection ports 905 are respectively provided on the outer walls of both sides of the first housing 1, and the two groups of oil injection ports 905 are respectively connected to the two groups of the second chutes 902. Lubricating oil can be directly injected into the second chutes 902 through the oil injection ports 905, which facilitates lubrication work.

[0065] When the crank assembly 3 rotates, it drives the connecting rod assembly 8 to reciprocate up and down, and then drives the upper mold base 10 to reciprocate up and down through the fixed connection between the connecting rod assembly 8 and the stamping transmission block 901, and achieves the purpose of rapid stamping. At the same time, the second slider 903 slides up and down in the second slide groove 902, which prevents the stamping transmission block 901 from shaking when it reciprocates up and down, thereby increasing the stability of the stamping work.

[0066] The connecting rod assembly 8 includes a connecting rod stopper 801, an upper connecting rod 802, a lower connecting rod 803, a second hinge box 804, a second hinge rod 805 and a second hinge block 806. For example, Figure 8 and Fig. 9As shown, the second hinge box 804 is fixedly mounted on the top of the punch transmission block 901, the second hinge rod 805 is fixedly mounted in the second hinge box 804, and the second hinge block 806 is rotatably connected to the second hinge rod 805 through a bearing; the connecting rod limit block 801 is fixedly mounted on the bearing ring 306, and the connecting rod limit block 801 is rotatably connected to the connecting rod limit rod 305 through the bearing ring 306; one end of the upper connecting rod 802 is fixedly mounted on the top of the connecting rod limit block 801, the other end of the upper connecting rod 802 penetrates into the hollow tube 601, and the upper connecting rod 802 is fixedly mounted on the first hinge block 608. One end of the lower connecting rod 803 is fixedly mounted on the bottom of the connecting rod limit block 801, the other end of the lower connecting rod 803 penetrates into the second hinge box 804, and is fixedly mounted on the second hinge block 806.

[0067] The rotation of the connecting rod limit rod 305 along the first rotating rod 301 drives the connecting rod limit block 801 to reciprocate up and down, and then the reciprocating up and down movement of the connecting rod limit block 801 causes the lower connecting rod 803 to reciprocate up and down, thereby pushing the stamping assembly 9 to also achieve up and down reciprocating movement, thereby achieving the purpose of continuous and rapid stamping. At the same time, the upper connecting rod 802 also pushes the first hinge box 602 to reciprocate up and down, thereby achieving the shock absorption effect of the dynamic balance assembly 6.

[0068] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dynamic balancing device for a high-speed precision punching machine, characterized in that: The dynamic balancing device comprises a first shell (1), a crank assembly (3), a dynamic balancing assembly (6) and a connecting rod assembly (8); the two ends of the crank assembly (3) are rotatably connected to the inner walls of the two sides of the first shell (1); the dynamic balancing assembly (6) comprises a hollow tube (601), a first hinge box (602), a first hinge rod (603) and a balancing airbag (606); the hollow tube (601) is fixedly mounted on the top inner wall of the first shell (1), the first hinge box (602) is located in the hollow tube (601), the first hinge rod (603) is fixedly mounted in the first hinge box (602), and the The first hinge rod (603) is rotatably connected to a first hinge block (608) via a bearing; the bottom of the balancing airbag (606) is fixedly mounted on the top of the first hinge box (602), and the top of the balancing airbag (606) is fixedly mounted on the inner walls of both sides of the hollow tube (601), and a vent hole is provided on the top of the balancing airbag (606), and a dustproof net (607) is provided on the top of the hollow tube (601); the connecting rod assembly (8) comprises a connecting rod stop block (801) and an upper connecting rod (802); the connecting rod stop block (801) is rotatably connected to the crank assembly (3) via a bearing, and one end of the upper connecting rod (802) is fixedly mounted on the inner walls of both sides of the hollow tube (601). The upper connecting rod (802) is fixedly mounted on the connecting rod limit block (801), and the other end of the upper connecting rod (802) passes through the hollow tube (601) and is rotatably connected to the first hinge rod (603) through a bearing; the dynamic balancing device also includes a stamping assembly (9), and the stamping assembly (9) includes a stamping transmission block (901), two groups of second sliding blocks (903) and two groups of balancing blocks (904); the stamping transmission block (901) is arranged in the first housing (1), one end of the stamping transmission block (901) passes through the bottom of the first housing (1), and the stamping transmission block (901) is fixedly mounted with an upper mold base (10); the first A group of second slide grooves (902) are respectively opened on the inner walls of both sides of a housing (1); one end of two groups of second sliders (903) are respectively slidably connected in the two groups of second slide grooves (902), and the other ends of the two groups of second sliders (903) are respectively fixedly mounted on the two side walls of the punching transmission block (901); two groups of balancing blocks (904) are respectively sleeved on one end of the two groups of second sliders (903) close to the second slide grooves (902); the crank assembly (3) comprises a first rotating rod (301), a second rotating rod (302), a connecting rod limiting rod (305), two groups of rotating rod connecting blocks (303) and two groups of fixing screws (304);One end of the first rotating rod (301) is rotatably connected to the inner wall of one side of the first shell (1) through a bearing seat, and the end of the second rotating rod (302) away from the bearing seat passes through the outside of the first shell (1) and is equipped with a clutch brake (7), and the support frame of the clutch brake (7) is fixedly installed on the outer wall of one side of the first shell (1) close to the second rotating rod (302); the two groups of rotating rod connecting blocks (303) are respectively fixedly installed on the other end of the first rotating rod (301) and the second rotating rod (302); and a group of cavities are respectively opened in the two groups of rotating rod connecting blocks (303), and a group of first threaded holes are respectively opened at the top of the two groups of cavities, and a group of second threaded holes are respectively opened at the bottom of the two groups of cavities. The two ends of the connecting rod limiting rod (305) respectively penetrate into the two groups of cavities, the two groups of fixing screws (304) are respectively threadedly connected in the two groups of the first threaded holes, one end of the two groups of fixing screws (304) both penetrate below the connecting rod limiting rod (305) and are respectively threadedly connected in the two groups of the second threaded holes; the other end of the fixing screw (304) penetrates the outside of the rotating rod connecting block (303); the connecting rod limiting rod (305) is rotatably connected to a bearing ring (306); the dynamic balancing device further comprises a power assembly (4), the power assembly (4) comprising a servo motor (401), a first mounting plate (402), a first transmission rod (403) and a transmission mechanism (404); the first mounting plate (402) is fixed The servo motor (401) is fixedly mounted on an outer wall of the first housing (1) close to the first rotating rod (301); the output end of the servo motor (401) extends into the first housing (1) and is connected to the first transmission rod (403) through a coupling; the other end of the first transmission rod (403) is rotatably connected to the first mounting plate (402) through a bearing seat; the first transmission rod (403) is connected to the first rotating rod (301) through a transmission mechanism (404); the transmission mechanism (404) comprises a belt (4042) and two sets of pulleys (4041); the two sets of pulleys (4041) are fixedly mounted on the first rotating rod, (301) and the first transmission rod (403); the two ends of the belt (4042) are respectively mounted on the two groups of pulleys (4041), and the two groups of pulleys (4041) are connected by the belt (4042); the dynamic balancing device also includes a brake assembly (5), the brake assembly (5) includes a pneumatic clamp (501), a second transmission rod (502), an engagement mechanism (503) and a second mounting plate (504); the second mounting plate (504) is fixedly mounted in the first housing (1), and the two ends of the second transmission rod (502) are respectively rotatably connected to the inner wall of the first housing (1) away from the power assembly (4) and the second mounting plate (504) through a group of bearing seats;The second transmission rod (502) is meshedly connected with the second rotating rod (302) through a meshing mechanism (503); the pneumatic clamp (501) is fixedly mounted on the top inner wall of the first housing (1); the meshing mechanism (503) comprises a transmission gear (5031) and a driven gear (5032); the transmission gear (5031) is fixedly mounted on the second rotating rod (302), the driven gear (5032) is fixedly mounted on the second transmission rod (502), and the driven gear (5032) is meshedly connected to the transmission gear (5031); two groups of clamping jaws of the pneumatic clamp (501) are respectively located on both sides of the driven gear (5032); a control panel (2) is fixedly mounted on the outer wall of one side of the first housing (1), and the control panel (2) is connected to the power assembly (4), the brake assembly (5), and the clutch brake assembly through electric wires. The device (7) is electrically connected to the pyroelectric human body sensing switch (11); the upper mold base (10) is fixedly mounted with a pyroelectric human body sensing switch (11); when an employee accidentally touches the mold with his hand, the pyroelectric human body sensing switch (11) first senses the heat energy of the human body, and then the pyroelectric human body sensing switch (11) sends a signal to the control panel (2); the control panel (2) stops the servo motor (401) from working, and starts the pneumatic clamp (501), so that the two groups of clamping claws of the pneumatic clamp (501) clamp the driven gear (5032), so that the driven gear (5032) and the transmission gear (5031) stop rotating immediately, so that the crank assembly (3) also stops rotating, and the stamping assembly (9) also stops reciprocating up and down, and then starts the clutch brake (7), and clamps the second rotating rod (302) through the clutch brake (7), so as to reduce the pressure of the pneumatic clamp (501). ; 2. The dynamic balancing device for a high-speed precision punch press according to claim 1, characterized in that: The dynamic balancing assembly (6) further comprises two groups of first sliding blocks (605); a group of first sliding grooves (604) are respectively provided on the inner walls on both sides of the hollow tube (601); one end of the two groups of first sliding blocks (605) are respectively slidably connected in the two groups of first sliding grooves (604), and the other ends of the two groups of first sliding blocks (605) are respectively fixedly mounted on the two side walls of the first hinge box (602).

3. The dynamic balancing device for a high-speed precision punch press according to claim 1, characterized in that: A group of oil filling ports (905) are respectively arranged on the outer walls on both sides of the first shell (1), and the two groups of oil filling ports (905) are respectively connected to the two groups of the second sliding grooves (902).

4. The dynamic balancing device for a high-speed precision punch press according to claim 1, characterized in that: The connecting rod assembly (8) further comprises a lower connecting rod (803), a second hinge box (804), a second hinge rod (805) and a second hinge block (806); the second hinge box (804) is fixedly mounted on the top of the stamping transmission block (901), the second hinge rod (805) is fixedly mounted in the second hinge box (804), and the second hinge block (806) is rotatably connected to the second hinge rod (805) via a bearing; the connecting rod limit block (801) is fixedly mounted on the bearing ring (306), and the connecting rod limit block (801) is rotatably connected to the connecting rod limit rod (305) via the bearing ring (306); one end of the lower connecting rod (803) is fixedly mounted on the connecting rod limit block (801), and the other end of the lower connecting rod (803) passes through the second hinge box (804) and is fixedly mounted on the second hinge block (806).

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