CN115416357B

CN115416357B - Self-vibration-isolation type stamping device for processing aluminum alloy castings

Info

Publication number: CN115416357B
Application number: CN202211352491.7A
Authority: CN
Inventors: 史嘉雄; 张玉萍; 吕辉平
Original assignee: Jiangsu Xunlong Aluminum Co ltd
Current assignee: Jiangsu Xunlong Aluminum Co ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-02-14
Anticipated expiration: 2042-11-01
Also published as: CN115416357A

Abstract

The invention discloses a self-vibration isolation type stamping device for processing aluminum alloy castings, and belongs to the technical field of stamping devices. The lifting mechanism comprises a bottom plate fixedly connected with the ground, a workbench, a support frame fixed on the workbench, a lifting plate arranged on the support frame in a sliding manner, a male die fixedly arranged below the lifting plate by adopting a pressure column, a female die matched with the male die, a hydraulic cylinder for driving the lifting plate to move up and down, a connecting rod A, a connecting rod B, a reversing pulley arranged on the bottom plate, a control rope, an energy absorption component A arranged between the bottom plate and the workbench and used for exciting the lifting movement of the workbench and an energy absorption component B used for absorbing the movement kinetic energy of the workbench. The stamping device is reasonable in structure, can realize secondary conversion and storage of instant huge impact force energy and slowly release the impact force energy, and therefore effectively reduces the ground vibration amplitude.

Description

Self-vibration-isolation type stamping device for processing aluminum alloy castings

Technical Field

The invention mainly relates to the technical field of stamping devices, in particular to a self-vibration-isolation type stamping device for processing aluminum alloy castings.

Background

The stamping is a forming processing method which applies external force to plates, strips, pipes, profiles and the like by a press machine and a die to cause the plates, the strips, the pipes, the profiles and the like to generate plastic deformation or separation so as to obtain required stamped parts; during the production of aluminum alloy products, aluminum alloy castings are typically stamped to produce aluminum alloy stamped parts. In the prior art, in the stamping of an aluminum alloy casting, an upper die (a male die) is generally lowered to a stationary lower die (a female die), and the downward moving upper die generates huge impact force to act on the aluminum alloy casting so as to generate the shape and the size matched with the upper die and the lower die. Although the prior art has realized the stamping forming to the aluminum alloy foundry goods, still there is certain defect: the large forces acting on the stationary lower die are directly transmitted by the frame to the ground, causing large vibrations of the ground near the press, which are further spread outwards along the ground, causing vibration pollution to the surrounding environment. Therefore, it is desirable to design a self-vibration isolation type punching device to reduce vibration contamination.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: aiming at the technical problems in the prior art, the invention provides the stamping device which is reasonable in structure and can realize secondary transformation and slow release after storage of the energy of the huge impact force generated instantly, so that the vibration amplitude of the ground is effectively reduced.

In order to solve the above problems, the solution proposed by the present invention is: the utility model provides a from stamping device that vibration isolation formula is used for processing aluminum alloy casting, it includes the bottom plate that links to each other with ground is fixed, the workstation with fix the support frame on the workstation, still include: a lifting plate arranged on the supporting frame in a sliding way, a male die fixedly arranged below the lifting plate by adopting a pressure column, a female die arranged on the workbench and matched with the male die, a hydraulic cylinder for driving the lifting plate to move up and down, a connecting rod A with the lower end hinged with the bottom plate, a connecting rod B with the two ends respectively hinged with the bottom of the workbench and the upper end of the connecting rod A, adopt the pulley yoke to install switching-over pulley on the bottom plate, one end with connecting rod A and connecting rod B's public pin joint link to each other, the other end walks around switching-over pulley and with the control rope that the lifter plate links to each other, and install be used for arousing between bottom plate and the workstation elevating movement's energy-absorbing subassembly A and be used for absorbing workstation kinetic energy's energy-absorbing subassembly B.

When the lifting plate is still at the highest position, the energy absorption component A and the energy absorption component B are in a non-working state; when the lifting plate moves up and down or is still at a non-highest position, the energy absorption assembly A and the energy absorption assembly B are in working states.

Further, the energy absorber assembly a includes: one end of the vibration isolation spring is fixedly arranged on the guide sleeve at the bottom of the workbench, one end of the vibration isolation spring is fixedly arranged on the top of the bottom plate, the other end of the vibration isolation spring penetrates into the guide sleeve in a sliding mode, and the two ends of the vibration isolation spring are respectively fixedly connected with the workbench and the bottom plate.

Further, the energy absorber assembly B comprises: the fixed rack of installing along the vertical direction extension on the workstation adopts support C to rotate and installs on the bottom plate and with rack toothing driven gear, with the reel that the coaxial synchronous rotation of gear installed adopts support B to fix and installs energy-absorbing platform on the bottom plate slides along the horizontal direction and installs energy-absorbing quality piece on the energy-absorbing platform, both ends respectively with the fixed vibration isolation spring B that links to each other of energy-absorbing quality piece and energy-absorbing platform, and one end with the energy-absorbing quality piece links to each other and the other end twines haulage rope on the reel.

Further, still include the position limiting element that prevents said connecting rod A and connecting rod B along collinear along the vertical direction, position limiting element includes: the pulley frame comprises a bracket A fixedly arranged on the pulley frame, a limiting rod fixedly arranged on the bracket A and extending along the horizontal direction, and a limiting spring sleeved on the limiting rod, wherein one end of the limiting spring is fixedly connected with the bracket A, and the other end of the limiting spring extends to the outside of the limiting rod; when the connecting rod A and the connecting rod B are collinear along the vertical direction, the free end of the limiting rod just props against the common hinge point of the connecting rod A and the connecting rod B; the limiting rod is axially provided with a rope hole allowing the control rope to pass through.

Further, a pressure lock assembly for locking an aluminum alloy casting prior to stamping is included, the pressure lock assembly comprising: the lifting rod is arranged on the lifting plate in a sliding mode along the vertical direction, the positioning pressure head is fixedly arranged at the lower end of the lifting rod, and the pressure spring is sleeved on the lifting rod, and two ends of the pressure spring are fixedly connected with the lifting plate and the lifting rod respectively; when the pressure spring is in a balanced state, the bottom surface of the positioning pressure head is lower than the lower surface of the male die.

Furthermore, a placing cavity for placing an aluminum alloy casting is also arranged on the female die, and a cavity of the female die is arranged in the middle below the placing cavity; the center of the bottom of the cavity is provided with a top head for ejecting the aluminum alloy stamping part in a sliding manner; and an electric cylinder A for driving the top head to move up and down is fixedly arranged at the bottom of the workbench.

Furthermore, the front side and the rear side of the workbench are respectively provided with an electric cylinder B for pushing the aluminum alloy stamping part to slide backwards along the top surface of the top head and a containing box for receiving the aluminum alloy stamping part.

Further, the diverting pulley comprises: the pulley frame comprises a disc rotatably arranged on the pulley frame, an annular groove formed in the circumferential side surface of the disc along the circumferential direction, and an arc-shaped pulley cover fixedly arranged on the pulley frame; the cross section of the groove is semicircular, and the radial clearance between the arc-shaped pulley cover and the outer peripheral surface of the disc is smaller than the outer diameter of the control rope.

Compared with the prior art, the invention has the following advantages and beneficial effects: the self-vibration-isolating stamping device for processing the aluminum alloy casting is provided with an energy-absorbing component A, an energy-absorbing component B and an energy-absorbing control component consisting of a connecting rod A, a connecting rod B, a reversing pulley and a control rope, wherein the energy-absorbing control component controls the energy-absorbing component A and the energy-absorbing component B to work and stop through the lifting of a lifting plate; the lifting plate is lifted once to complete the stamping forming of the aluminum alloy casting once, the impact force between the male die and the female die is directly converted into the integral motion kinetic energy of the workbench, the motion kinetic energy is temporarily stored and slowly released by the energy absorption assembly A and the energy absorption assembly B and is finally consumed by the damping force, so that the impact energy directly transmitted to the bottom plate is very small, the vibration isolation is realized, and the ground vibration amplitude caused by the stamping forming is effectively reduced. Therefore, the stamping device is reasonable in structure, and can realize secondary transformation and slow release after storage of instant huge impact energy, so that the ground vibration amplitude is effectively reduced.

Drawings

FIG. 1 is a schematic structural diagram of a self-vibration-isolating stamping device for processing aluminum alloy castings according to the present invention.

Fig. 2 is a partially enlarged view of a portion I in fig. 1.

Fig. 3 is a partially enlarged view of a portion II in fig. 1.

Fig. 4 is a schematic diagram of the relative positions of the storage box and the workbench.

Fig. 5 is a schematic view of the construction of the diverting pulley of the invention split diametrically.

In the figure, 10-aluminum alloy stamping; 11-a base plate; 12-a working table; 121-a plug; 13-a support frame; 14-a lifter plate; 15-hydraulic cylinder; 16-pressure column; 17-a male die; 18-a female die; 180-placing the cavity; 181-a cavity; 21-a guide sleeve; 22-a guide post; 23-a vibration isolation spring a; 31-link a; 32-connecting rod B; 33-a control rope; 34-a limiting rod; 340-rope hole; 35-a limit spring; 36-a diverting pulley; 360-grooves; 361-disc; 362-arc pulley cover; 37-a pulley yoke; 38-support a; 41-a rack; 42-gear; 43-a reel; 44-a hauling rope; 45-an energy absorbing mass; 46-vibration isolation spring B; 47-an energy absorbing platform; 48-bracket B; 49-bracket C; 51-a lifter; 52-positioning the pressure head; 53-pressure spring; 61-electric cylinder A; 62-electric cylinder B;7, a containing box.

Detailed Description

The invention will be described in further detail with reference to the following figures and specific examples. The installation in the invention comprises direct installation and indirect installation by means of an intermediate piece; for convenience of description, the blank before stamping is referred to as an aluminum alloy casting, and the product after stamping is referred to as an aluminum alloy stamping 10.

Referring to fig. 1 and 3, the self-vibration-isolating punching apparatus for processing aluminum alloy castings according to the present invention includes a base plate 11 fixedly connected to the ground, a table 12, a support frame 13 fixed to the table 12, a lifting plate 14 slidably mounted on the support frame 13, a punch 17 fixedly mounted below the lifting plate 14 by a pressure column 16, a die 18 mounted on the table 12 and engaged with the punch 17, a hydraulic cylinder 15 for driving the lifting plate 14 to move up and down, a connecting rod a31 having a lower end hinged to the base plate 11, a connecting rod B32 having two ends hinged to the bottom of the table 12 and the upper end of the connecting rod a31, respectively, a diverting pulley 36 mounted on the base plate 11 by a pulley bracket 37, a control cord 33 having one end connected to a common hinge point of the connecting rod a31 and the connecting rod B32 and the other end passing around the diverting pulley 36 and connected to the lifting plate 14, an energy absorbing assembly a for exciting the lifting movement of the table 12 and an energy absorbing assembly B for absorbing the movement energy of the table 12. In specific implementation, the bottom plate 11 is fixedly connected with the ground foundation by expansion screws, and the bottom plate 11 is arranged in parallel to the horizontal plane; the supporting frame 13 is an inverted U-shaped support, the upright columns on the left and right sides of the supporting frame are respectively provided with a linear guide rail (not shown in the figure) along the vertical direction, the two linear guide rails are respectively provided with a rectangular sliding block (not shown in the figure), and the two rectangular sliding blocks are fixedly connected with the two ends of the lifting plate 14, so that the lifting plate 14 is in sliding connection with the supporting frame 13; the male die 17 is detachably connected with the pressure column 16, so that different male dies 17 can be conveniently replaced to adapt to the punch forming of different aluminum alloy stamping parts 10; the female die 18 is positioned right below the male die 17, and when the male die 17 impacts downwards and enters the female die 18, the aluminum alloy casting placed in the placing cavity 180 can be punched and formed into the aluminum alloy stamping part 10; the cylinder body part of the hydraulic cylinder 15 is fixedly arranged at the top of the support frame 13, the end part of an output rod of the hydraulic cylinder 15 is fixedly connected with the lifting plate 14, the lifting motion of the lifting plate 14 is driven by controlling the extension and contraction of the output rod of the hydraulic cylinder 15, and then the lifting motion of the male die 17 is controlled, so that the stamping forming of the aluminum alloy casting is implemented.

Diverting pulley 36 is used to change the direction of the force of control rope 33 so that the section of control rope 33 between diverting pulley 36 and lift plate 14 extends in the vertical direction and the section between diverting pulley 36 and link a31 extends in the horizontal direction in a static equilibrium state. The connecting rod A31, the connecting rod B32, the reversing pulley 36 and the control rope 33 form an energy absorption control assembly for controlling the energy absorption assembly A and the energy absorption assembly B to work or stop working. The energy absorption control components are provided in two groups, symmetrically arranged about the axis of the pressure column 16. When the lifting plate 14 is still at the highest position, the energy absorption component A and the energy absorption component B are in a non-working state; when the lifting plate 14 moves up and down or is still at a non-highest position, the energy absorption assembly A and the energy absorption assembly B are in a working state. In specific implementation, the energy absorbing assemblies A are two groups and are symmetrically arranged about the axis of the pressure column 16; the energy absorption components B are a group and are arranged on one side of the bottom plate 11; the two groups of energy absorption control assemblies are respectively arranged on two sides of the two groups of energy absorption assemblies A. The line connecting the lower hinge point of the connecting rod A31 and the upper hinge point of the connecting rod B32 is a plumb line A, the common hinge point of the connecting rod A31 and the connecting rod B32 deviates from the plumb line A and is close to the central line of the female die 18, namely the connecting rod A31 and the connecting rod B32 form an included angle with an outward opening. In an initial state, the lifting plate 14 is still at the highest position, the control rope 33 is in a tensioning state, the energy absorption assembly A and the energy absorption assembly B are in a balance state, the included angle between the connecting rod A31 and the connecting rod B32 reaches an intermediate value, and the height position where the workbench 12 is still is also called as a balance height position; the energy absorbing component A and the energy absorbing component B are in a balanced state, namely the gravity of the workbench 12 and the total weight of all objects arranged on the workbench 12 are balanced by the elastic potential energy of the energy absorbing component A. The control rope 33 is a flexible rope, and when the lifting plate 14 moves upwards, the control rope 33 is gradually tightened; when the lifting plate 14 moves downwards, the control rope 33 is gradually loosened; the workbench 12 moves downwards, and the included angle between the connecting rod A31 and the connecting rod B32 is gradually reduced; the table 12 moves upward, and the included angle between the link a31 and the link B32 becomes gradually larger. When the lifting plate 14 is at the highest position, the control rope 33 is in a tensioned state, and the included angle between the connecting rod A31 and the connecting rod B32 can only be increased but cannot be reduced. At this time, even if a downward external force other than gravity acts on the table 12, the table 12 cannot move downward; however, if an upward external force acts on the table 12, the table 12 may move upward. Therefore, when the lifting plate 14 is at the highest position, the control rope 33 under tension will prevent the reduction of the included angle between the connecting rod A31 and the connecting rod B32, and the working platform 12 will be locked at the balance height position, thereby increasing the stability of placing the aluminum alloy casting in the placing cavity 180 of the female die 18. The energy absorbing assembly a and the energy absorbing assembly B stop operating. When the lifting plate 14 is lower than the highest position, the control rope 33 is in a loose state, the included angle between the connecting rod A31 and the connecting rod B32 can be increased or decreased, namely the workbench 12 can move up and down, the workbench 12 can move downwards due to the impact force in the vertical direction, and the energy absorption assembly A and the energy absorption assembly B start to work.

Referring to FIG. 2, preferably, the energy absorber assembly A comprises: one end is fixed and installed in the guide sleeve 21 of workstation 12 bottom, and one end is fixed and is installed in bottom plate 11 top, and the other end slides and penetrates guide sleeve 21 in the guide post 22 to and both ends respectively with workstation 12 and bottom plate 11 fixed vibration isolation spring A23 that links to each other. In specific implementation, in order to increase the frictional damping force of the energy absorbing assembly a, the guide post 22 and the guide sleeve 21 are in transition fit, and the vibration isolation spring a23 is a damping type metal coil spring. The impact energy between the punch 17 and the die 18 is directly converted into the motion kinetic energy of the whole workbench, which is a general term for the workbench 12 and all objects mounted on the workbench 12. When the workbench 12 moves downwards, the compression amount of the vibration isolation spring A23 is increased, one part of the motion kinetic energy of the whole workbench is consumed by damping, and the other part of the motion kinetic energy is stored by the vibration isolation spring A23 and the energy absorption component B; when the workbench 12 moves upward, the compression amount of the vibration isolation spring a23 is reduced, the elastic potential energy stored in the vibration isolation spring a23 is gradually released, one part is converted into the motion kinetic energy of the whole workbench, and the other part is consumed by damping.

Preferably, the energy absorber assembly B comprises: a rack 41 fixedly arranged on the workbench 12 and extending along the vertical direction, a gear 42 which is rotatably arranged on the bottom plate 11 by adopting a bracket C49 and is in meshing transmission with the rack 41, a reel 43 which is coaxially and synchronously rotatably arranged with the gear 42, an energy absorption platform 47 fixedly arranged on the bottom plate 11 by adopting a bracket B48, an energy absorption mass block 45 arranged on the energy absorption platform 47 in a sliding way along the horizontal direction, vibration isolation springs B46 with two ends respectively fixedly connected with the energy absorption mass block 45 and the energy absorption platform 47, and a traction rope 44 with one end connected with the energy absorption mass block 45 and the other end wound on the reel 43. In order to increase the damping force of the energy-absorbing assembly B, the friction between the energy-absorbing mass 45 and the energy-absorbing platform 47 needs to be increased. In specific implementation, a linear groove (not shown in the figure) with a contact surface as rough as possible can be arranged on the upper part of the energy-absorbing platform 47 along the horizontal direction, and the energy-absorbing mass block 45 moves back and forth in the linear groove; preferably, the energy-absorbing platform 47 is made of a non-metallic material capable of significantly elastically deforming, and the matching between the linear grooves and the energy-absorbing mass 45 is transition matching. The vibration isolation spring B46 and the traction rope 44 are respectively located on both sides of the energy absorbing mass 45, and the central axis of the vibration isolation spring B46 is made collinear with the horizontal section of the traction rope 44. When the workbench 12 moves downwards, the gear 42 and the reel 43 rotate clockwise, the traction rope 44 pulls the energy-absorbing mass block 45 rightwards, the length of the vibration-isolating spring B46 is increased, and a part of the motion kinetic energy of the whole workbench is converted into the motion kinetic energy of the energy-absorbing mass block 45 and the elastic potential energy of the vibration-isolating spring B46; when the workbench 12 moves upwards, the gear 42 and the reel 43 rotate counterclockwise, the energy absorbing mass 45 moves leftwards under the action of the vibration isolating spring B46, the length of the vibration isolating spring B46 is reduced, the elastic potential energy of the vibration isolating spring B46 is gradually released, one part of the elastic potential energy is converted into the motion kinetic energy of the energy absorbing mass 45, and the other part of the elastic potential energy is consumed by damping. Because the energy-absorbing mass 45 moves rightwards and cannot drive the reel 43 to rotate clockwise through the traction rope 44, the workbench 12 cannot be driven to move downwards, and the energy transmission between the energy-absorbing assembly B and the workbench 12 is unidirectional in the process; the energy-absorbing mass 45 moving leftwards can pull the traction rope 44 to drive the reel 43 to rotate anticlockwise so as to drive the workbench 12 to move upwards, so that the energy transmission between the energy-absorbing assembly B and the workbench 12 is bidirectional in the process. Due to the adoption of the energy absorption component A and the energy absorption component B, the impact force energy borne by the workbench 12 is greatly consumed and slowly released, so that the impact force transmitted to the bottom plate 11 by the workbench 12 is small, and vibration isolation is realized.

Preferably, the energy absorption control device further comprises two limiting elements for preventing the connecting rod A31 and the connecting rod B32 from being collinear along the vertical direction, and the two limiting elements are arranged in one-to-one correspondence with the two groups of energy absorption control components. The spacing component includes: a bracket A38 fixedly arranged on the pulley frame 37, a limit rod 34 fixedly arranged on the bracket A38 and extending along the horizontal direction, and a limit spring 35 which is sleeved on the limit rod 34, one end of which is fixedly connected with the bracket A38 and the other end of which extends to the outside of the limit rod 34; when the connecting rod A31 and the connecting rod B32 are collinear along the vertical direction, the free end of the limiting rod 34 just props against the common hinge point of the connecting rod A31 and the connecting rod B32; the stopper rod 34 is provided with a rope hole 340 along the axial direction for allowing the control rope 33 to pass through. When the impact force applied to the workbench 12 is large, the rising height of the workbench 12 is very high, which easily causes the connecting rod a31 and the connecting rod B32 to be collinear in the vertical direction, thereby causing the position of the workbench 12 to be locked, further causing the energy absorption assembly a and the energy absorption assembly B to be incapable of continuously working, and causing the workbench 12 to be incapable of returning to the initial balance height position. The limiting spring 35 in the limiting element generates certain compression deformation when the connecting rod a31 and the connecting rod B32 are collinear along the vertical direction, and stores certain elastic potential energy, and the elastic potential energy can push a common hinge point of the connecting rod a31 and the connecting rod B32 to one side close to the central line of the female die 18 in the releasing process, so that the unlocking effect on the position of the workbench 12 is realized.

Preferably, the invention also comprises two groups of pressure locking assemblies for locking the aluminum alloy casting before stamping, and the two groups of pressure locking assemblies are symmetrically arranged about the central axis of the pressure column 16. The pressure lock assembly includes: a lifting rod 51 which is arranged on the lifting plate 14 in a sliding way and extends along the vertical direction, a positioning pressure head 52 which is fixedly arranged at the lower end of the lifting rod 51, and a pressure spring 53 which is sleeved on the lifting rod 51 and has two ends fixedly connected with the lifting plate 14 and the lifting rod 51 respectively; the pressure spring 53 is in equilibrium, and the bottom surface of the positioning ram 52 is lower than the lower surface of the punch 17. The two positioning pressure heads 52 are respectively positioned right above the left side and the right side inside the placing cavity 180. When the lifting plate 14 moves downwards to be ready for punching an aluminum alloy casting, firstly the positioning pressure head 52 presses the aluminum alloy casting, the length of the pressure spring 53 begins to increase, then the lifting plate 14 continues to move downwards, the male die 17 gradually punches the aluminum alloy casting into the cavity 181 of the female die 18, and the aluminum alloy casting is separated from the positioning pressure head 52 in the punch forming process; the pressure spring 53 is arranged to adjust the pressing force of the positioning ram 52 and to realize flexible contact between the positioning ram 52 and the aluminum alloy casting so that the aluminum alloy casting slides between the contact part of the positioning ram 52 during the stamping process.

Preferably, the female die 18 is further provided with a placing cavity 180 for placing an aluminum alloy casting, and the middle part below the placing cavity 180 is a cavity 181 of the female die 18; the top head 121 for ejecting the aluminum alloy stamping part 10 is slidably arranged at the right center of the bottom of the cavity 181; an electric cylinder a61 for driving the ram 121 to move up and down is fixedly installed at the bottom of the table 12. The placing cavity 180 is used for positioning the aluminum alloy casting; when an aluminum alloy casting is stamped, the output rod of the electric cylinder A61 is shortest, namely the upper surface of the top head 121 is flush with the inner surface of the cavity 181; when the stamped aluminum alloy stamping part 10 needs to be ejected, the output rod of the electric cylinder a61 extends, so that the upper surface of the ejector 121 is far higher than the outer surface of the female die 18.

Referring to fig. 1 and 4, preferably, electric cylinders B62 for pushing the aluminum alloy stamping 10 to slide backward along the top surface of the plug 121 and storage boxes 7 for receiving the aluminum alloy stamping 10 are respectively installed on the front and rear sides of the table 12. When the upper surface of the plug 121 is much higher than the upper surface of the die 18, the output rod of the electric cylinder B62 pushes the aluminum alloy stamped part 10 on the plug 121 into the storage box 7. In specific implementation, the storage box 7 is detachably mounted on the bottom plate 11, and the electric cylinder B62 can be fixedly mounted on the workbench 12 by using a connecting piece (not shown in the figure) so as to facilitate the workbench 12 to dynamically push the aluminum alloy stamping part 10 in the process of releasing energy by lifting movement; the electric cylinder B62 may also be fixedly mounted on the base plate 11 by a connecting member (not shown) to statically push the aluminum alloy stamping 10 after the worktable 12 is stationary.

Referring to fig. 1 and 5, the diverting pulley 36 preferably includes: a disk 361 rotatably mounted on the pulley frame 37, an annular groove 360 circumferentially opened on a circumferential side surface of the disk 361 for accommodating the control cord 33, and an arc-shaped pulley cover 362 fixedly mounted on the pulley frame 37 and located outside the circumferential side surface of the disk 361; the cross-sectional shape of the groove 360 is semicircular, and the radial clearance between the arc-shaped pulley cover 362 and the outer peripheral surface of the disc 361 is smaller than the outer diameter of the control cord 33. The arc-shaped pulley cover 362 is provided to prevent the control cord 33 in a slack state from being released from the diverting pulley 36.

The working process of the invention is as follows: in an initial state, the lifting plate 14 is still at the highest position, the control rope 33 is in a tensioned state, the energy absorption assembly A and the energy absorption assembly B are in a balanced state, the included angle between the connecting rod A31 and the connecting rod B32 reaches a middle value, and the workbench 12 is in a balanced height position.

And placing the aluminum alloy casting into a placing cavity 180 of the female die 18, starting punch forming, driving the lifting plate 14 to move downwards by the hydraulic cylinder 15, and punching the aluminum alloy casting into a cavity 181 of the female die 18 by the male die 17 to form the aluminum alloy stamping part 10.

The hydraulic cylinder 15 drives the lifting plate 14 to move upwards, and the male die 17 returns to the initial height position.

The output rod of the electric cylinder A61 extends, and the ejector 121 jacks up the aluminum alloy stamping part 10; the output rod of the electric cylinder B62 extends to push the aluminum alloy stamped part 10 into the storage box 7.

The output rod of the electric cylinder B62 retracts to the initial position, and the output rod of the electric cylinder a61 retracts, so that the plug 121 returns to the initial height position.

The principle of the self-vibration isolation of the invention is as follows: in the stamping forming process, impact force energy between the male die 17 and the female die 18 is directly converted into integral motion kinetic energy of the workbench after impact is finished, when the workbench 12 moves downwards, the compression amount of the vibration isolation spring A23 is increased, the guide sleeve 21 slides downwards along the guide column 22, one part of the integral motion kinetic energy of the workbench is consumed by damping, and the other part of the integral motion kinetic energy of the workbench is stored by the vibration isolation spring A23 and the energy absorption component B; the downward movement of the worktable 12 causes the length of the vibration isolation spring B46 to increase, the energy-absorbing mass 45 moves towards the direction close to the worktable 12, and a part of the movement kinetic energy of the whole worktable is converted into the movement kinetic energy of the energy-absorbing mass 45 and the elastic potential energy of the vibration isolation spring B46. When the workbench 12 moves upwards, the compression amount of the vibration isolation spring A23 is reduced, the guide sleeve 21 slides upwards along the guide column 22, the elastic potential energy stored by the vibration isolation spring A23 is gradually released, one part is converted into the integral motion kinetic energy of the workbench, and the other part is consumed by damping; the energy absorbing mass block 45 moves in the direction far away from the center of the workbench 12 under the action of the vibration isolating spring B46, the length of the vibration isolating spring B46 is reduced, the elastic potential energy of the vibration isolating spring B46 is gradually released, one part of the elastic potential energy is converted into the motion kinetic energy of the energy absorbing mass block 45, and the other part of the elastic potential energy is consumed by damping until the whole kinetic energy of the workbench is completely consumed. The impact force energy borne by the workbench 12 is greatly consumed and slowly released, so that the acting force transmitted to the bottom plate 11 by the workbench 12 is small, the vibration energy transmitted to the ground is small, and active vibration isolation is realized.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention.

Claims

1. The utility model provides a from stamping device that vibration isolation formula is used for processing aluminum alloy casting, includes bottom plate (11) that links to each other with ground is fixed, workstation (12) and support frame (13) of fixing on workstation (12), its characterized in that still includes:

a lifting plate (14) arranged on the support frame (13) in a sliding manner, a male die (17) fixedly arranged below the lifting plate (14) by adopting a pressure column (16), a female die (18) arranged on the workbench (12) and matched with the male die (17), a hydraulic cylinder (15) for driving the lifting plate (14) to move up and down, a connecting rod A (31) with the lower end hinged with the bottom plate (11), a connecting rod B (32) with the two ends hinged with the bottom of the workbench (12) and the upper end of the connecting rod A (31) respectively, a reversing pulley (36) arranged on the bottom plate (11) by adopting a pulley frame (37), an energy absorption assembly A with one end connected with a common hinged joint of the connecting rod A (31) and the connecting rod B (32) and the other end bypassing the reversing pulley (36) and connected with the lifting plate (14), and an energy absorption assembly B arranged between the bottom plate (11) and the workbench (12) and used for exciting the lifting movement of the workbench (12) and an energy absorption assembly A for absorbing the kinetic energy of the movement of the workbench (12);

when the lifting plate (14) is still at the highest position, the energy absorption component A and the energy absorption component B are in a non-working state; when the lifting plate (14) moves up and down or is still at a non-highest position, the energy absorption component A and the energy absorption component B are in a working state;

the energy absorber assembly B includes: the rack (41) fixedly mounted on the workbench (12) and extending along the vertical direction is rotatably mounted on the bottom plate (11) by a support C (49), meshed with the rack (41) for driving, and is rotatably mounted on a reel (43) coaxially and synchronously with the gear (42), an energy absorbing platform (47) fixedly mounted on the bottom plate (11) by a support B (48), an energy absorbing mass block (45) slidably mounted on the energy absorbing platform (47) along the horizontal direction, an isolation spring B (46) fixedly connected with the energy absorbing mass block (45) and the energy absorbing platform (47) at two ends, and a traction rope (44) with one end connected with the energy absorbing mass block (45) and the other end wound on the reel (43);

the energy-absorbing platform (47) is made of a non-metal material which can obviously generate elastic deformation, a linear groove with a rough surface is arranged on the upper part of the energy-absorbing platform along the horizontal direction, and the linear groove is in transition fit with the energy-absorbing mass block (45);

the connecting rod A (31) and the connecting rod B (32) are prevented from being collinear along the vertical direction, and the limiting element comprises: the pulley frame comprises a support A (38) fixedly arranged on the pulley frame (37), a limiting rod (34) fixedly arranged on the support A (38) and extending along the horizontal direction, and a limiting spring (35) which is sleeved on the limiting rod (34), one end of the limiting spring is fixedly connected with the support A (38), and the other end of the limiting spring extends to the outside of the limiting rod (34); when the connecting rod A (31) and the connecting rod B (32) are collinear along the vertical direction, the free end of the limiting rod (34) just props against the common hinge point of the connecting rod A (31) and the connecting rod B (32); the limiting rod (34) is provided with a rope hole (340) allowing the control rope (33) to pass through along the axial direction.

2. The self-vibration-damping stamping apparatus for aluminum alloy castings according to claim 1, wherein the energy absorber assembly a comprises: the vibration isolation device comprises a guide sleeve (21) with one end fixedly arranged at the bottom of the workbench (12), a guide post (22) with one end fixedly arranged at the top of the bottom plate (11) and the other end slidably penetrating into the guide sleeve (21), and a vibration isolation spring A (23) with two ends fixedly connected with the workbench (12) and the bottom plate (11) respectively.

3. The self-damping stamping apparatus for processing aluminum alloy castings according to claim 1, further comprising a pressure lock assembly for locking the aluminum alloy castings prior to stamping, the pressure lock assembly comprising: the lifting device comprises a lifting rod (51) which is arranged on the lifting plate (14) in a sliding mode along the vertical direction, a positioning pressure head (52) which is fixedly arranged at the lower end of the lifting rod (51), and a pressure spring (53) which is sleeved on the lifting rod (51) and is fixedly connected with the lifting plate (14) and the lifting rod (51) at two ends respectively; when the pressure spring (53) is in a balanced state, the bottom surface of the positioning pressure head (52) is lower than the lower surface of the punch (17).

4. The self-vibration-isolating punching device for machining aluminum alloy castings according to claim 1, wherein a placing cavity (180) for placing the aluminum alloy castings is further formed in the female die (18), and a cavity (181) of the female die (18) is formed in the middle below the placing cavity (180); the center of the bottom of the cavity (181) is slidably provided with a top head (121) for ejecting the aluminum alloy stamping part (10); and an electric cylinder A (61) for driving the jacking head (121) to move up and down is fixedly arranged at the bottom of the workbench (12).

5. A self-vibration-isolating punching device for machining aluminum alloy castings according to claim 4, characterized in that the front and rear sides of the workbench (12) are respectively provided with an electric cylinder B (62) for pushing the aluminum alloy punching part (10) to slide backwards along the top surface of the top head (121) and a storage box (7) for receiving the aluminum alloy punching part (10).

6. A self-damping stamping apparatus as defined in claim 1 wherein the reversing sheave (36) comprises: a disc (361) rotatably arranged on the pulley frame (37), an annular groove (360) circumferentially arranged on the circumferential side surface of the disc (361), and an arc-shaped pulley cover (362) fixedly arranged on the pulley frame (37); the cross section of the groove (360) is semicircular, and the radial clearance between the arc-shaped pulley cover (362) and the outer peripheral surface of the disc (361) is smaller than the outer diameter of the control rope (33).