Part ejection device of cold header and using method of part ejection device

Abstract

The invention relates to the field of cold header equipment, in particular to a part ejection device of a cold header and a use method of the part ejection device, and provides the part ejection device of the cold header and the use method of the part ejection device in order to solve the problems existing in the prior art. A plurality of ejector rod assemblies which are evenly arranged side by side and can move synchronously are slidably connected to the other side of the upper end of the base, lever assemblies capable of adjusting the pushing distance are connected between the crankshaft and the ejector rod assemblies respectively, and each ejector rod assembly comprises an ejector cylinder, an ejector rod slidably connected to the inner side of the ejector cylinder in the axial direction and an ejector block fixedly connected to one end of the ejector rod. The other end of the ejector rod is connected with a vibration assembly, when the ejector cylinder, the ejector rod and the ejector block synchronously move, the ejector rod can drive the ejector block to vibrate in the axial direction under the action of the vibration assembly, axial high-frequency vibration is overlaid while the ejector block integrally and linearly moves, the double ejection effect is formed, friction force between a part and the inner wall of a mold is effectively broken, and material blocking is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cold header equipment, in particular to a part ejection device of a cold header and a use method thereof. BACKGROUND

[0002] In the field of cold heading, the cold header performs cold forging on metal materials through a die, and after forming a part with a required shape, the part needs to be taken out from the die cylinder by relying on an ejection device. The performance of the ejection device directly affects the efficiency of cold heading processing, the quality of the part and the versatility of the equipment. The stroke of the ejector rod of the existing ejection device is mostly fixedly designed. If cold heading parts with different lengths and thicknesses need to be processed, the device needs to be disassembled and the corresponding specification of the ejector rod assembly or the transmission structure needs to be adjusted. This not only is cumbersome to operate, but also causes the equipment downtime to be prolonged and the production efficiency to be reduced. It is difficult to meet the continuous processing needs of parts with multiple specifications, and for parts with closely fitted inner walls or with slight deformation, a single mechanical pushing cannot effectively overcome the adhesion between the die and the part. The existing device does not set a targeted auxiliary ejection structure, which leads to a low success rate of ejection of such parts, and even manual assistance is needed to take out the parts, further reducing the degree of production automation. SUMMARY

[0003] The present application provides a part ejection device of a cold header and a use method thereof to effectively solve the problems mentioned in the background.

[0004] To solve the above problems, the technical solution adopted by the present application is as follows: A part ejection device of a cold header, comprising a base, a rotatable crankshaft rotatably connected to one side of the upper end of the base, a plurality of top rod assemblies evenly arranged side by side and capable of synchronous movement slidably connected to the other side of the upper end of the base, a lever assembly capable of adjusting the pushing distance connected between the crankshaft and the plurality of top rod assemblies, and the top rod assemblies being capable of reciprocating movement driven by the lever assembly when the crankshaft rotates. The top rod assembly comprises a top cylinder, a top rod slidably connected to the inner side of the top cylinder in the axial direction, and a top block fixedly connected to one end of the top rod. The other end of the top rod is connected with a vibration assembly, and the top rod can drive the top block to vibrate in the axial direction under the action of the vibration assembly when the top cylinder, the top rod and the top block move synchronously.

[0005] Preferably, the lever assembly comprises a plurality of levers arranged side by side, a support member is connected to the middle of the levers, a hinged rod is hingedly connected to one end of the lever, the other end of the hinged rod is hingedly connected to the connecting rod journal of the crankshaft, a first push rod is hingedly connected to the other end of the hinged rod, the lower end of the first push rod is hingedly connected to two mirror-image second push rods, the other end of one of the second push rods is hingedly connected to a fixed seat, and the fixed seat is fixedly connected to the base; the other end of the other second push rod is hingedly connected to a movable base, and the movable base is slidingly connected to the base, and the movable base is fixedly connected to the top cylinder. The crankshaft is coaxially fixedly connected to a transmission gear at both ends, the lower side of the transmission gear is meshed with a drive gear, and a transmission shaft is fixedly connected between the two drive gears, the transmission shaft is rotatably connected to the base, one end of the transmission shaft is provided with a drive motor, the drive motor is fixedly connected to the base, and the power output end of the drive motor is coaxially fixedly connected to the transmission shaft.

[0006] Preferably, the support member comprises a mounting frame fixedly connected to the base, a movable plate capable of moving left and right is slidingly connected to the inner side of the mounting frame, a plurality of telescopic assemblies arranged side by side are mounted at the lower end of the movable plate; a mounting sliding groove is formed in the length direction of the surface of the lever, a mounting sliding block is hingedly connected to the lower end of the telescopic assembly, and the mounting sliding block is slidingly connected to the mounting sliding groove. When the movable plate moves left and right, it can drive the mounting sliding block to move in the mounting sliding groove, for adjusting the support point of the lever; A driving rod is fixedly connected to the lower end of the telescopic assembly, and the driving rod is coaxially arranged at the middle of the mounting sliding block; a driving inclined groove is formed in the lower side of the surface of the mounting frame, and the driving inclined groove is arranged in parallel with the lever.

[0007] Preferably, the two ends of the movable plate are fixedly connected to a connecting sliding block, a connecting sliding groove is formed in the surface of the mounting frame corresponding to the connecting sliding block, the connecting sliding block is slidingly connected to the connecting sliding groove, one end of the connecting sliding block is fixedly connected to a driven plate, and the driven plate is slidingly connected to the surface of the mounting frame; a sliding groove is formed in the length direction of the surface of the driven plate, a rotatable rotating disc is arranged on one side of the driven plate, the rotating disc is rotatably connected to the mounting frame, a matching pin shaft is rotatably connected to the surface of the rotating disc, and the matching pin shaft is slidingly matched with the sliding groove. When the rotating disc rotates, the driven plate can move left and right reciprocatingly through the sliding matching of the matching pin shaft and the sliding groove.

[0008] Preferably, the front end of the rotating disc is coaxially provided with a transmission disc, the surface of the transmission disc is fixedly connected with a fixing frame, the fixing frame is fixedly connected with the mounting frame, the transmission disc is a hollow structure, two first and second inner ratchet rings with opposite directions are fixedly connected inside the transmission disc, a rotating plate is coaxially and rotatably connected inside the transmission disc, the rotating plate is coaxially and fixedly connected with the rotating disc, a driving rod is coaxially and rotatably connected with the middle of the rotating plate, the other end of the driving rod is coaxially and rotatably connected with the surface of the transmission disc; the surface of the rotating plate is slidably connected with a first and a second ratchet block on the two sides respectively, the outer end of the first ratchet block is engaged with the first inner ratchet ring, the outer end of the second ratchet block is engaged with the second inner ratchet ring, the inner end of the first and second ratchet blocks is fixedly connected with an engaging spring respectively, the other end of the engaging spring is fixedly connected with the rotating plate respectively. A connecting plate is fixedly connected with the surface of the driving rod, the two ends of the connecting plate are fixedly connected with a pushing inclined block respectively, the surface of the first and second ratchet blocks is fixedly connected with a linkage pin respectively, the linkage pin is in contact with the inclined surface of the pushing inclined block respectively, the front end of the driving rod is provided with a transmission component capable of being connected with the transmission gear.

[0009] Preferably, the transmission component comprises a swing plate located on the front side of the transmission disc, the outer end of the driving rod is fixedly connected with a worm gear respectively, the worm gear is engaged with a worm on one side, the worm is rotatably connected with the mounting frame respectively, the lower end of the worm is fixedly connected with a second connecting bevel gear respectively, the lower side of the second connecting bevel gear is engaged with a first connecting bevel gear, the front end of the first connecting bevel gear is coaxially and fixedly connected with a first linkage pulley, the first linkage pulley is rotatably connected with the swing plate on the front side, the lower end of the swing plate is rotatably connected with a driving gear capable of being engaged with the transmission gear, one end of the driving gear is coaxially and fixedly connected with a second linkage pulley, a transmission belt is sleeved between the first and second linkage pulleys; the rear end of the swing plate is fixedly connected with a stop rod, the other end of the stop rod is provided with a spring stop piece, the spring stop piece is fixedly connected with the mounting frame, the stop rod is located at the middle position of the spring stop piece.

[0010] Preferably, the vibration assembly comprises a rotating seat rotatably connected inside the moving base and a moving seat fixedly connected with one end of the top rod, a top spring is sleeved on the surface of the top rod between the moving seat and the top cylinder; the surface of the corresponding end of the rotating seat and the moving seat is respectively provided with a recess and a protrusion engaged with each other, the moving seat can be repeatedly pushed to move when the rotating seat rotates through the repeated lifting and engagement of the protrusion and the recess; The end of the rotating seat away from the moving seat is coaxially and fixedly connected with a second engaging bevel gear, the first engaging bevel gear is engaged with one side of the second engaging bevel gear, the first engaging bevel gear is rotatably connected with the moving base, one end of the first engaging bevel gear is coaxially and fixedly connected with a moving gear, the lower side of the moving gear is engaged with a fixed rack, the fixed rack is fixedly connected with the base.

[0011] Preferably, the inside of the ejector rod and the ejector block is a hollow structure connected to each other, the end of the ejector rod away from the ejector block is fixedly connected and connected with a piston box, the piston box is slidingly matched with the inside of the rotating seat, the middle part of the rotating seat is fixedly connected and connected with a first air inlet one-way valve, the end of the piston box towards the rotating seat is fixedly connected and connected with a plurality of second air inlet one-way valves, and the other end of the ejector block is fixedly connected and connected with a plurality of one-way air outlet valves at non-circular center positions.

[0012] Preferably, the inside of the one-way air outlet valve is slidingly connected with a movable piston column in the axial direction, the two ends of the piston column are fixedly connected with stop blocks, the stop blocks are blocked at the two ends of the one-way air outlet valve respectively, and the surface of the piston column between the two stop blocks is respectively sleeved with a return spring; a plurality of air outlet grooves are formed in the surface of the piston column and the circumferential surface of the stop block located at the air inlet of the one-way air outlet valve respectively, and the air outlet valve of the circumferential surface of the stop block does not penetrate the other end of the stop block.

[0013] The present application has the following advantages compared with the prior art: 1. By setting the lever assembly with adjustable supporting points, the installation sliding block is driven by the moving plate to slide in the installation sliding groove of the lever, so that the accurate adjustment of the supporting point of the lever is realized. When the supporting point moves towards the crankshaft direction, the moving distance of the ejector rod assembly becomes longer. When it moves away from the crankshaft direction, the moving distance becomes shorter. Without disassembling the device, different specifications of cold heading parts can be adapted, the downtime adjustment time is reduced, the continuous processing demand of multiple varieties of parts is met, and the equipment utilization rate is improved. 2. When the moving base moves, the rotating seat is rotated through the meshing of the moving gear and the fixed rack and the transmission of the bevel gear. The rotating seat is repeatedly pushed against the ejector rod under the cooperation of the moving base, so that the ejector block is superimposed with axial high-frequency vibration on the basis of overall linear movement, forming a double-ejecting effect, effectively breaking the frictional force constraint of the part and the inner wall of the mold, and avoiding material jamming. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a first schematic view of the overall structure of the part ejecting device of the cold header of the present application. Figure 2 It is a second schematic view of the overall structure of the part ejecting device of the cold header of the present application. Figure 3 It is a schematic view of the lever assembly structure of the part ejecting device of the cold header of the present application. Figure 4 It is a schematic view of the lever installation structure of the part ejecting device of the cold header of the present application. Figure 5 It is a schematic view of the supporting component structure of the part ejecting device of the cold header of the present application. Figure 6A first schematic diagram of a rotating plate transmission structure of a part ejection device of a cold header of the present application; Figure 7 A second schematic diagram of a rotating plate transmission structure of a part ejection device of a cold header of the present application; Figure 8 A third schematic diagram of a rotating plate transmission structure of a part ejection device of a cold header of the present application; Figure 9 A schematic diagram of a swing plate transmission structure of a part ejection device of a cold header of the present application; Figure 10 A first schematic diagram of a ejector rod assembly structure of a part ejection device of a cold header of the present application; Figure 11 A second schematic diagram of a ejector rod assembly structure of a part ejection device of a cold header of the present application; Figure 12 A third schematic diagram of a ejector rod assembly structure of a part ejection device of a cold header of the present application; Figure 13 A schematic diagram of a first air inlet one-way valve, a second air inlet one-way valve and an air outlet one-way valve mounting structure of a part ejection device of a cold header of the present application; Figure 14 A schematic diagram of a ejector rod and ejector block structure of a part ejection device of a cold header of the present application; Figure 15 A schematic diagram of an air outlet one-way valve structure of a part ejection device of a cold header of the present application.

[0015] The figure marks: 1-base, 2-protection frame, 3-mounting frame, 4-mold cylinder, 5-driving motor, 6-driving gear, 7-transmission gear, 8-crankshaft, 9-hinged rod, 10-lever, 11-mounting cylinder, 12-moving plate, 13-mounting rod, 14-mounting sliding block, 15-mounting sliding slot, 16-driven plate, 17-sliding slot, 18-rotating disc, 19-matching pin shaft, 20-transmission disc, 21-worm wheel, 22-worm, 23-guiding rod, 24-guiding inclined slot, 25-first inner ratchet ring, 26-second inner ratchet ring, 27-rotating plate, 28-second ratchet block, 29-first ratchet block, 30-engaging spring, 31-linking pin shaft, 32-pushing inclined block, 33-driving rod, 34-first connecting bevel gear, 35-second connecting bevel gear, 37-first linking pulley, 38-second linking pulley, 39-guiding gear, 40-oscillating plate, 41-stop rod, 42-spring stop piece, 43-moving base, 44-top cylinder, 45-top block, 46-top rod, 47-fixed rack, 48-moving gear, 49-first engaging bevel gear, 50-second engaging bevel gear, 51-rotating seat, 52-moving seat, 53-piston box, 54-first air inlet check valve, 55-second air inlet check valve, 56-one-way air outlet valve, 57-piston column, 58-stop block, 59-air outlet slot, 60-return spring, 61-first push rod, 62-second push rod, 63-fixed seat, 64-support spring. DETAILED DESCRIPTION

[0016] The following is a specific embodiment of the present application, and the technical solutions of the present application are further described in conjunction with the drawings, but the present application is not limited to these embodiments.

[0017] As Figures 1-15As shown, the present application provides a part ejection device of a cold header, which comprises a base 1, a rotatable crankshaft 8 rotatably connected to one side of the upper end of the base 1, a plurality of top rod assemblies uniformly arranged side by side and capable of synchronous movement slidably connected to the other side of the upper end of the base 1, a die cylinder 4 for cold heading fittings arranged on one side of the top rod assembly, a protective frame 2 arranged on the upper side of the die cylinder 4 and the top rod assembly, both ends of the protective frame 2 being fixedly connected with the base 1, the protective frame 2 being used for protecting the top rod assembly; a lever assembly capable of adjusting the pushing distance is connected between the crankshaft 8 and the plurality of top rod assemblies, the crankshaft 8 drives the top rod assembly to reciprocate and drives the top rod assembly to eject material when rotating through the lever assembly, the pushing distance of the lever assembly is adjusted to adjust the ejection stroke of the top rod assembly, different lengths and thicknesses of cold heading parts are adapted, the stroke adjustment can be realized without disassembling the device, the universality of the device is greatly improved, the ejection needs of parts of multiple specifications can be met, the equipment downtime adjustment time caused by replacing part models is reduced; the cooperation of the guide rod 23 and the guide inclined groove 24 can avoid the offset of the support point, ensure the stability of the transmission of the lever 10 after adjustment, and prevent insufficient ejection force or stroke deviation caused by loosening of the support point during ejection; the top rod assembly comprises a top cylinder 44, a top rod 46 slidably connected to the inner side of the top cylinder 44 in the axial direction, and a top block 45 fixedly connected to one end of the top rod 46, the other end of the top rod 46 is connected with a vibration assembly, the top rod 46 drives the top block 45 to vibrate in the axial direction under the action of the vibration assembly when the top cylinder 44, the top rod 46 and the top block 45 move synchronously, which has the effect of secondary ejection, a supporting spring 64 is sleeved on the surface of the top cylinder 44, the supporting spring 64 is located between the top block 45 and the moving base 43 and both ends thereof are fixedly connected with the top block 45 and the moving base 43 respectively, the supporting spring 64 is used for supporting the top block 45, and the reset effect of the top block 45 is increased.

[0018] The lever assembly comprises a plurality of levers 10 arranged side by side, the middle part of the lever 10 is connected with a supporting part, one end of the lever 10 is respectively hinged with a hinge rod 9, the other end of the hinge rod 9 is respectively hinged with a connecting rod journal of the crankshaft 8, the other end of the hinge rod 9 is respectively hinged with a first push rod 61, the lower end of the first push rod 61 is respectively hinged with two mirror image arranged second push rods 62, the other end of one of the second push rods 62 is hinged with a fixed seat 63, the fixed seat is fixedly connected with the base 1; the other end of the other second push rod 62 is respectively hinged with a moving base 43, the moving base 43 is respectively slidingly connected with the base 1, the moving base 43 is fixedly connected with a top cylinder 44, the moving base 43 is used to drive the top rod assembly to move; the two ends of the crankshaft 8 are respectively coaxially fixedly connected with transmission gears 7, the lower side of the transmission gear 7 is respectively meshed with a drive gear 6, a transmission shaft is fixedly connected between the two drive gears 6, the transmission shaft is rotatably connected with the base 1, one end of the transmission shaft is provided with a drive motor 5, the drive motor 5 is fixedly connected with the base 1, the power output end of the drive motor 5 is coaxially fixedly connected with the transmission shaft; before the device is started, each component is in an initial standby state: the crankshaft 8 is rotatably connected with a preset installation position on one side of the upper end of the base 1, the axis line thereof is parallel to the upper surface of the base 1; a plurality of top rod assemblies are evenly and side by side distributed along the sliding guide rail on the other side of the upper end of the base 1, and the top cylinders 44 of all the top rod assemblies are fixedly connected with the moving base 43 through bolts, so as to ensure that the moving base 43 can synchronously drive all the top rod assemblies to move when the moving base 43 moves; the lever assembly serves as a power transmission medium between the crankshaft 8 and the top rod assembly, the plurality of levers 10 are arranged in parallel, the middle part of each lever 10 is indirectly connected with the base 1 through the supporting part, and the two ends are respectively formed with movable connections with the hinge rod 9 and the second push rod 62 through the hinge structure, thereby forming a complete power transmission chain. When the device enters a working state, after the drive motor 5 is started, the power output end of the drive motor 5 directly drives the transmission shaft to rotate, because the drive gears 6 at the two ends of the transmission shaft are in meshing state with the transmission gears 7 at the two ends of the crankshaft 8, the rotation of the transmission shaft is synchronously transmitted to the two transmission gears 7, thereby driving the crankshaft 8 to do uniform circular rotation around its own axis.

[0019] During rotation of the crankshaft 8, the connecting rod journal of the crankshaft 8 moves in a circular motion with the crankshaft 8 as the center, thereby pulling or pushing the articulated rod 9 articulated therewith, and the end of the articulated rod 9 away from the crankshaft 8 is articulated with the first push rod 61, so that the movement of the articulated rod 9 can drive the first push rod 61 to reciprocate; and the two mirror image second push rods 62 articulated at the lower end of the first push rod 61 move, and the end of one of the second push rods 62 is articulated with a fixed seat fixed on the base 1, which cannot move, so that the movement of the first push rod 61 is converted into the horizontal push-pull action of the other second push rod 62, that is, when the first push rod 61 moves upward, it will push the second push rod 62 to drive the moving base 43 to move towards the mold cylinder along the sliding track of the base 1; when the first push rod 61 moves downward, it will pull the second push rod 62 to drive the moving base 43 to move away from the mold cylinder, thereby realizing the synchronous left-right reciprocating movement of the cylinder 44, the top rod 46 and the top block 45, and completing the power transmission of the basic ejection action.

[0020] The support component includes a mounting frame 3 fixedly connected with the base 1, the inner side of the mounting frame 3 is slidably connected with a moving plate 12 capable of moving left and right, the lower end of the moving plate 12 is respectively provided with a plurality of side-by-side arranged telescopic assemblies; the surface of the lever 10 is respectively provided with a mounting sliding groove 15 along the length direction, the lower end of the telescopic assembly is respectively articulated with a mounting sliding block 14, the mounting sliding block 14 is respectively slidably connected with the mounting sliding groove 15, and the moving plate 12 can drive the mounting sliding block 14 to move in the mounting sliding groove 15 when moving left and right, so as to adjust the support point of the lever 10, thereby adjusting the force arm of the lever 10; when the support point moves towards the crankshaft 8, the power arm of the lever 10 becomes longer and the resistance arm becomes shorter, and under the same rotation angle of the crankshaft 8, the moving stroke of the moving base 43 increases and the moving distance of the top rod assembly becomes longer; when the support point moves away from the crankshaft 8, the power arm of the lever 10 becomes shorter and the resistance arm becomes longer, the moving stroke of the moving base 43 decreases, and the moving distance of the top rod assembly shortens, so as to realize the accurate adjustment of the ejection distance. The lower end of the telescopic assembly is respectively fixedly connected with a driving rod 23, the driving rod 23 is coaxially arranged with the middle part of the mounting sliding block 14; the surface of the mounting frame 3 is respectively provided with a driving inclined groove 24 at the lower side, the driving inclined groove 24 is arranged in parallel with the lever 10, the telescopic assembly includes a mounting cylinder 11 and a mounting rod 13 slidably connected with each other, the upper end of the mounting rod 13 is fixedly connected with the moving plate 12, and the lower end of the mounting cylinder 11 is fixedly connected with the driving rod 23; in the process of moving of the moving plate 12, the mounting cylinder 11 and the mounting rod 13 can slide relative to each other under the sliding cooperation of the driving inclined groove 24 and the driving rod 23, so as to adjust the length of the telescopic assembly, avoid changing the inclination of the lever 10 in the process of changing the support point of the lever 10, and avoid driving the top rod assembly to change the position under the linkage action.

[0021] Connecting sliders are fixedly connected to both ends of the movable plate 12. Connecting grooves are respectively opened on the surface of the mounting frame 3 corresponding to the connecting sliders. The connecting sliders are slidably connected to the connecting grooves. A driven plate 16 is fixedly connected to the other end of one of the connecting sliders. The driven plate 16 is slidably connected to the surface of the mounting frame 3. A sliding groove 17 is opened on the surface of the driven plate 16 along the length direction. A rotating disk 18 is provided on one side of the driven plate 16. The rotating disk 18 is rotatably connected to the mounting frame 3. A mating pin 19 is rotatably connected to the non-center position of the surface of the rotating disk 18. The mating pin 19 is slidably engaged with the sliding groove 17. When the rotating disk 18 rotates, the driven plate 16 can be driven to move back and forth left and right through the sliding engagement of the mating pin 19 and the sliding groove 17. A transmission disk 20 is coaxially disposed at the center of the front end of the rotating disk 18. A fixing frame is fixedly connected to the surface of the transmission disk 20, and the fixing frame is fixedly connected to the mounting frame 3. The transmission disk 20 has a hollow structure, and two inner ratchet rings 25 and 26 with opposite ratchet directions are fixedly connected inside. A rotating plate 27 is rotatably connected coaxially inside the transmission disk 20. The rotating plate 27 is fixedly coaxially connected to the rotating disk 18. A drive rod 33 is rotatably connected coaxially at the center of the rotating plate 27. The other end of the drive rod 33 is rotatably connected coaxially to the surface of the transmission disk 20. A first ratchet block 29 and a second ratchet block 28 are slidably connected to the corresponding two sides of the surface of the rotating plate 27. The outer end of the first ratchet block 29 engages with the first inner ratchet ring 25, and the outer end of the second ratchet block 28 engages with the second inner ratchet ring 26. The inner ends of the first ratchet block 29 and the second ratchet block 28 are respectively fixedly connected to a meshing spring 30. The other end of the meshing spring 30 is fixedly connected to the rotating plate 27. The meshing spring 30 is used to push the first ratchet block 29 and the second ratchet block 28 to engage with the first inner ratchet ring 25 and the second inner ratchet ring 26 respectively. A connecting plate is fixedly connected to the surface of the drive rod 33. Pushing blocks 32 are fixedly connected to both ends of the connecting plate. Connecting pins 31 are fixedly connected to the surfaces of the first ratchet block 29 and the second ratchet block 28, respectively. The connecting pins 31 are respectively engaged with the inclined surfaces of the pushing blocks 32. A transmission component capable of connecting and transmitting power to the transmission gear 7 is installed at the front end of the drive rod 33. Under the transmission of the transmission component, the drive rod 33 can rotate. When the drive rod 33 rotates, the connecting plate fixed to its surface will rotate synchronously with the drive rod 33. The pushing blocks 32 at both ends of the connecting plate will slide relative to the connecting pins 31 on the surfaces of the first ratchet block 29 and the second ratchet block 28, thereby driving the first ratchet block 29 and the second ratchet block 28 to move, respectively. Since the ratchet directions of the first inner ratchet ring 25 and the second inner ratchet ring 26 inside the transmission disc 20 are opposite, when the drive rod 33 rotates clockwise, the pushing blocks 32 will push the first inner ratchet ring 29 and the second inner ratchet ring 28. A ratchet block 29 moves in the direction of disengaging from the first inner ratchet ring 25, causing the first ratchet block 29 to disengage from the first inner ratchet ring 25. Under the engagement of the second ratchet block 28 and the second inner ratchet ring 26, the drive rod 33 can rotate clockwise. When the drive rod 33 rotates, it can drive the rotating plate 27 to rotate, which in turn drives the rotating disk 18 to rotate. Conversely, when the drive rod 33 rotates counterclockwise, it can push the second ratchet block 28 to move in the direction of disengaging from the second inner ratchet ring 26. Under the engagement of the first ratchet block 29 and the first inner ratchet ring 25, the drive rod 33 can rotate counterclockwise. When the drive rod 33 rotates counterclockwise, it can drive the rotating disk 18 to rotate counterclockwise through the rotating plate 27. When the drive rod 33 is stationary, the rotating disk 18 cannot rotate because the first ratchet block 29 and the second ratchet block 28 are engaged with the first inner ratchet ring 25 and the second inner ratchet ring 26, respectively. The driven plate 16 is fixedly connected to the movable plate 12 via a connecting slider. Therefore, the movement of the driven plate 16 will cause the movable plate 12 to move synchronously within the inner sliding track of the mounting frame 3. Multiple telescopic components at the lower end of the movable plate 12 move with the movable plate 12, and the mounting slider 14 hinged at its lower end will slide within the mounting groove 15 on the surface of the lever 10, thereby changing the support point position of the lever 10.

[0022] The transmission component comprises an oscillating plate 40 located on the front side of the transmission disc 20, the outer ends of the driving rods 33 are fixedly connected with worm gears 21 respectively, one side of the worm gears 21 is engaged with a worm 22, the worm 22 is rotatably connected with the mounting frame 3 respectively, the engagement transmission of the worm gears 21 and the worm 22 has a self-locking effect; the lower ends of the worm 22 are fixedly connected with second connecting bevel gears 35 respectively, the lower side of the second connecting bevel gears 35 is engaged with a first connecting bevel gear 34, the front end of the first connecting bevel gear 34 is coaxially fixedly connected with a first connecting pulley 37, the first connecting pulley 37 is rotatably connected with the oscillating plate 40 on the front side, the lower end of the oscillating plate 40 is rotatably connected with a driving gear 39 capable of engaging with the transmission gear 7, one end of the driving gear 39 is coaxially fixedly connected with a second connecting pulley 38, and a transmission belt is sleeved between the second connecting pulley 38 and the first connecting pulley 37; after the driving gear 39 engages with the transmission gear 7, the power of the transmission gear 7 can be transmitted to the worm 22 through the engagement transmission of the first connecting pulley 37 and the second connecting pulley 38 and the first connecting bevel gear 34 and the second connecting bevel gear 35, and the worm 22 drives the worm gear 21 to rotate, so that the driving rod 33 is driven to rotate; the rear end of the oscillating plate 40 is fixedly connected with a stop rod 41, the other end of the stop rod 41 is provided with a spring stop piece 42, the spring stop piece 42 is fixedly connected with the mounting frame 3, and the stop rod 41 is located at the middle position of the spring stop piece 42; When it is necessary to adjust the fulcrum of the lever 10, the oscillating plate 40 is pushed towards the direction close to the transmission gear 7, the oscillating plate 40 rotates around the hinge point of the oscillating plate 40 and the mounting frame 3, drives the driving gear 39 at the lower end of the oscillating plate 40 to move close to the transmission gear 7, and the driving gear 39 is completely engaged with the transmission gear 7 until the driving gear 39 is completely engaged with the transmission gear 7; at this time, the stop rod 41 at the rear end of the oscillating plate 40 moves to one side of the spring stop piece 42, the spring stop piece 42 is slightly deformed to provide engagement pressure for the driving gear 39, and the transmission stability is ensured; when the transmission gear 7 rotates, the driving gear 39 rotates synchronously, the second connecting pulley 38 fixedly connected with one end of the driving gear 39 rotates synchronously, the power is transmitted to the first connecting pulley 37 through the transmission belt sleeved between the second connecting pulley 38 and the first connecting pulley 37; the first connecting pulley 37 is coaxially fixed with the first connecting bevel gear 34, and the rotation of the first connecting pulley 37 drives the first connecting bevel gear 34 to rotate, and the first connecting bevel gear 34 drives the second connecting bevel gear 35 above through the taper surface engagement; the second connecting bevel gear 35 is coaxially fixed with the worm 22, the rotation of the worm 22 is transmitted to the worm gear 21 engaged with the worm 22, and the worm gear 21 is coaxially fixed with the driving rod 33, so that the rotation of the driving rod 33 is finally realized.

[0023] The vibration assembly comprises a rotating seat 51 rotatably connected to the inner side of the moving base 43 and a moving seat 52 fixedly connected to one end of the jacking rod 46, a jacking spring is sleeved on the surface of the jacking rod 46 between the moving seat 52 and the jacking cylinder 44; the corresponding end surfaces of the rotating seat 51 and the moving seat 52 are respectively provided with recesses and protrusions which are engaged with each other, when the rotating seat 51 rotates, the moving seat 52 can be repeatedly pushed to move through the repeated jacking and engagement of the protrusions and the recesses, when the moving seat 52 moves, the jacking rod 46 and the jacking block 45 also move synchronously, thereby achieving the effect of driving the jacking block 45 to jacking the material again; The end of the rotating seat 51 away from the moving seat 52 is coaxially fixedly connected with a second meshing bevel gear 50, one side of the second meshing bevel gear 50 is engaged with a first meshing bevel gear 49, the first meshing bevel gear 49 is rotatably connected with the moving base 43, one end of the first meshing bevel gear 49 is coaxially fixedly connected with a moving gear 48, the lower side of the moving gear 48 is engaged with a fixed rack 47, the fixed rack 47 is fixedly connected with the base 1, when the moving base 43 moves, the rotating seat 51 can be driven to rotate under the engagement of the moving gear 48 and the fixed rack 47 and the meshing transmission of the first meshing bevel gear 49 and the second meshing bevel gear 50.

[0024] The inside of the jacking rod 46 and the jacking block 45 is a hollow structure connected to each other, one end of the jacking rod 46 away from the jacking block 45 is fixedly connected and connected with a piston box 53, the piston box 53 is slidingly fitted with the inside of the rotating seat 51, the middle part of the rotating seat 51 is fixedly connected and connected with a first air inlet one-way valve 54, one end of the piston box 53 towards the rotating seat 51 is fixedly connected and connected with a plurality of second air inlet one-way valves 55, the other end of the jacking block 45 is fixedly connected and connected with a plurality of one-way air outlet valves 56 at non-circular center positions; The movable piston column 57 is axially and slidingly connected to the interior of the one-way air outlet valve 56, and the two ends of the piston column 57 are fixedly connected with the stoppers 58, respectively, which block the two ends of the one-way air outlet valve 56, respectively; the surfaces of the piston column 57 between the two stoppers 58 are respectively sleeved with the return springs 60; the surface of the piston column 57 and the circumferential surface of the stopper 58 located at the air inlet of the one-way air outlet valve 56 are respectively provided with a plurality of air outlet grooves 59, and the air outlet valve on the circumferential surface of the stopper 58 does not penetrate the other end of the stopper 58; the top rod 46 and the hollow channel in the interior of the top block 45 are mutually penetrated, forming a complete gas flow path; the end of the top rod 46 away from the top block 45 is fixedly connected with the piston box 53, and the outer wall of the piston box 53 and the inner wall of the rotating seat 51 are in sliding fit, so as to ensure that the piston box 53 can reciprocate along the axis of the rotating seat 51 and does not leak gas. The first air inlet one-way valve 54 in the middle of the rotating seat 51 has a direction of conduction for external gas to enter the interior of the rotating seat 51; the end of the piston box 53 towards the rotating seat 51 is provided with a plurality of second air inlet one-way valves 55, and the direction of conduction is for the gas in the interior of the rotating seat 51 to enter the piston box 53; the end of the top block 45 away from the top rod 46 is provided with a plurality of one-way air outlet valves 56 at a non-circular center position, and the direction of conduction is for the gas in the interior of the top block 45 to be sprayed to the outside; When the top rod 46 moves away from the top block 45 under the action of the vibration assembly, the piston box 53 is synchronously moved away from the top block 45, at this time, the volume of the space in the interior of the rotating seat 51 is increased, the internal gas pressure is lower than the external atmospheric pressure, the first air inlet one-way valve 54 is automatically opened, the external air enters the interior of the rotating seat 51 through the first air inlet one-way valve 54, and the gas suction is completed; when the top rod 46 moves towards the top block 45, the piston box 53 moves towards the top block 45 with the top rod 46, the volume of the space in the interior of the rotating seat 51 is reduced, the gas pressure is increased, the first air inlet one-way valve 54 is closed due to the reverse pressure effect, the gas in the interior of the rotating seat 51 pushes the second air inlet one-way valve 55 to open, enters the interior of the piston box 53, and then flows into the hollow chamber of the top block 45 through the hollow channel of the top rod 46; When the top block 45 is in contact with the part in the mold cylinder and continues to push, the gas inside the top block 45 is further compressed, and the gas pressure continues to rise, the high-pressure gas pushes the piston column 57 inside the one-way gas outlet valve 56 to move away from the top block 45, the stop block 58 at both ends of the piston column 57 moves together, and the reset spring 60 sleeved on the surface of the piston column 57 is compressed; when the piston column 57 moves to a certain position, the gas outlet groove 59 on the surface of the stop block 58 of the one-way gas inlet valve 56 is connected with the inside of the one-way gas outlet valve 56, so that the gas enters the one-way gas outlet valve 56, and the gas outlet groove 59 on the surface of the piston column 57 moves out of the gas outlet of the one-way gas outlet valve 56, so that the outside and the inside of the one-way gas outlet valve 56 are connected, forming a gas ejection channel, and the high-pressure gas is ejected to the gap between the top block 45 and the part through the channel; the ejected gas can form a gas pressure buffer layer between the top block 45 and the part on one hand, avoiding hard contact to cause damage to the surface of the part; on the other hand, the thrust of the gas will assist the top block 45 to push the part, so that the part is more easily separated from the frictional force of the inner wall of the mold cylinder, further improving the stability and efficiency of the top material; when the ejector rod 46 is retracted and the top block 45 is separated from the part, the gas pressure inside the top block 45 decreases, the reset spring 60 releases the elastic potential energy, pushes the piston column 57 to reset, the gas outlet groove 59 is re-sealed, and the one-way gas outlet valve 56 returns to the initial state, waiting for the next gas assisted cycle.

[0025] The application also provides a use method of the part ejection device of the cold header, which comprises the following steps: S1: start the driving motor 5, drive the crankshaft 8 to rotate through the meshing of the driving gear 6 and the transmission gear 7, drive the moving base 43 to move left and right through the lever assembly under the rotation of the crankshaft 8, and drive the top cylinder 44, the ejector rod 46 and the top block 45 to move left and right synchronously under the driving of the moving base 43; S2: drive the rotating seat 51 and the moving seat 52 to move synchronously when the moving base 43 rotates, rotate the rotating seat 51 when moving, and constantly lift the moving seat 52, so that the moving seat 52 constantly moves along the axial direction under the driving of the ejector rod 46, and then the ejector rod 46 constantly moves along the axial direction under the driving of the top block 45, thereby achieving the effect of secondary material ejection; S3: when the ejector rod 46 drives the piston box 53 to constantly move along the axial direction, the outside gas can be sucked into the top block 45 through the first gas inlet one-way valve 54 and the second gas inlet one-way valve 55, and then ejected through the one-way gas outlet valve 56, so that the ejected gas acts between the top block 45 and the material, and the gas pressure between the top block 45 and the material is compressed during the process of the top block 45 ejecting the material, thereby assisting the top block 45 to push the material to separate from the mold cylinder; S4; by swinging the swing plate 40 to the direction of the transmission gear 7, the power generated when the transmission gear 7 rotates can be transmitted to the rotating disc 18 after the driving gear 39 is engaged with the transmission gear 7, so as to move the moving plate 12, change the fulcrum of the lever 10, and adjust the moving distance of the top rod assembly under the driving of the lever 10.

[0026] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art can make various modifications or supplements to the described specific embodiments or use similar ways instead, without departing from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A parts ejector device for a cold header, comprising a base (1), characterized in that: The upper end of the base (1) is rotatably connected with a rotatable crankshaft (8), and the other side of the upper end of the base (1) is slidably connected with a plurality of top rod assemblies which are uniformly arranged side by side and can synchronously move; the crankshaft (8) and the plurality of top rod assemblies are respectively connected with lever assemblies which can adjust the pushing distance; when the crankshaft (8) rotates, the lever assemblies are driven to move the top rod assemblies reciprocally; The top rod assembly comprises a top cylinder (44), a top rod (46) which is slidably connected to the inside of the top cylinder (44) in the axial direction, and a top block (45) which is fixedly connected to one end of the top rod (46); the other end of the top rod (46) is connected with a vibration assembly; when the top cylinder (44), the top rod (46) and the top block (45) synchronously move, the vibration assembly can drive the top rod (46) to vibrate in the axial direction to drive the top block (45) to vibrate in the axial direction.

2. A part ejector for a cold header as defined in claim 1 wherein: The lever assembly comprises a plurality of levers (10) which are arranged side by side; the middle part of each lever (10) is connected with a supporting part; one end of each lever (10) is hingedly connected with a hinge rod (9); the other end of each hinge rod (9) is hingedly connected with a connecting rod journal of the crankshaft (8); the other end of each hinge rod (9) is hingedly connected with a first push rod (61); the lower end of each first push rod (61) is hingedly connected with two mirror-image second push rods (62); the other end of one of the second push rods (62) is hingedly connected with a fixed seat which is fixedly connected with the base (1); the other end of the other second push rod (62) is hingedly connected with a moving base (43) which is slidably connected with the base (1); the moving base (43) is fixedly connected with the top cylinder (44). Both ends of the crankshaft (8) are coaxially fixedly connected with transmission gears (7); the lower side of each transmission gear (7) is meshed with a driving gear (6); the two driving gears (6) are fixedly connected with a transmission shaft which is rotatably connected with the base (1); one end of the transmission shaft is provided with a driving motor (5) which is fixedly connected with the base (1); the power output end of the driving motor (5) is coaxially fixedly connected with the transmission shaft.

3. A part ejector for a cold header as defined in claim 2 wherein: The supporting part comprises a mounting frame (3) which is fixedly connected with the base (1); the inner side of the mounting frame (3) is slidably connected with a moving plate (12) which can move left and right; the lower end of the moving plate (12) is mounted with a plurality of telescopic assemblies which are arranged side by side; the surface of each lever (10) is provided with a mounting sliding groove (15) which is arranged in the length direction; the lower end of each telescopic assembly is hingedly connected with a mounting sliding block (14); the mounting sliding block (14) is slidably connected with the mounting sliding groove (15); when the moving plate (12) moves left and right, the mounting sliding block (14) can move in the mounting sliding groove (15) to adjust the supporting point of the lever (10); The lower end of each telescopic assembly is fixedly connected with a guide rod (23) which is coaxially arranged with the middle part of the mounting sliding block (14); the lower side of the surface of the mounting frame (3) is provided with a guide inclined groove (24) which is parallel to the lever (10).

4. A part ejector for a cold header as defined in claim 3 wherein: Both ends of the moving plate (12) are fixedly connected with connecting sliding blocks, and the surface of the mounting frame (3) corresponding to the connecting sliding blocks is provided with connecting sliding grooves, and one end of one of the connecting sliding blocks is fixedly connected with a driven plate (16), and the driven plate (16) is slidably connected with the surface of the mounting frame (3); the surface of the driven plate (16) is provided with a sliding groove (17) in the length direction, and one side of the driven plate (16) is provided with a rotatable rotating disc (18), and the rotating disc (18) is rotatably connected with the mounting frame (3), and the surface of the rotating disc (18) is rotatably connected with a matched pin shaft (19) at a non-central position, and the matched pin shaft (19) is slidably matched with the sliding groove (17), and when the rotating disc (18) rotates, the driven plate (16) can be driven to move left and right reciprocatingly through the sliding matching of the matched pin shaft (19) and the sliding groove (17).

5. A part ejector for a cold header as defined in claim 4 wherein: The front end of the rotating disc (18) is coaxially provided with a transmission disc (20), the surface of the transmission disc (20) is fixedly connected with a fixed frame, the fixed frame is fixedly connected with the mounting frame (3), the transmission disc (20) is a hollow structure, two first inner ratchet rings (25) and second inner ratchet rings (26) with opposite directions are fixedly connected in the transmission disc (20), a rotating plate (27) is rotatably connected with the transmission disc (20) coaxially, the rotating plate (27) is fixedly connected with the rotating disc (18) coaxially, a drive rod (33) is rotatably connected with the rotating plate (27) coaxially, and the other end of the drive rod (33) is rotatably connected with the surface of the transmission disc (20) coaxially; the surface of the rotating plate (27) is slidably connected with a first ratchet block (29) and a second ratchet block (28) on the two sides respectively, the outer end of the first ratchet block (29) is engaged with the first inner ratchet ring (25), the outer end of the second ratchet block (28) is engaged with the second inner ratchet ring (26), the inner ends of the first ratchet block (29) and the second ratchet block (28) are fixedly connected with engaging springs (30) respectively, and the other ends of the engaging springs (30) are fixedly connected with the rotating plate (27) respectively; The surface of the drive rod (33) is fixedly connected with a connecting plate, the two ends of the connecting plate are fixedly connected with push inclined blocks (32) respectively, the surfaces of the first ratchet block (29) and the second ratchet block (28) are fixedly connected with linkage pin shafts (31) respectively, the linkage pin shafts (31) are respectively attached to the inclined surfaces of the push inclined blocks (32), and the front end of the drive rod (33) is provided with a transmission part capable of being connected with the transmission gear (7) for transmission.

6. A part ejector for a cold header as defined in claim 5 wherein: The transmission component includes an oscillating plate (40) on the front side of the transmission disc (20), the outer end of the drive rod (33) is fixedly connected with a worm gear (21), one side of the worm gear (21) is engaged with a worm (22), the worm (22) is rotatably connected with the mounting frame (3), the lower end of the worm (22) is fixedly connected with a second connecting bevel gear (35), the lower side of the second connecting bevel gear (35) is engaged with a first connecting bevel gear (34), the front end of the first connecting bevel gear (34) is coaxially fixedly connected with a first connecting pulley (37), the first connecting pulley (37) is rotatably connected with the oscillating plate (40) on the front side, the lower end of the oscillating plate (40) is rotatably connected with a driving gear (39) capable of engaging with the transmission gear (7), one end of the driving gear (39) is coaxially fixedly connected with a second connecting pulley (38), and the second connecting pulley (38) and the first connecting pulley (37) are sleeved with a transmission belt; the rear end of the oscillating plate (40) is fixedly connected with a stop rod (41), the other end of the stop rod (41) is provided with a spring stop piece (42), the spring stop piece (42) is fixedly connected with the mounting frame (3), and the stop rod (41) is located at the middle position of the spring stop piece (42).

7. A part ejector for a cold header as defined in claim 1 wherein: The vibration assembly includes a rotating seat (51) rotatably connected to the inner side of the moving base (43) and a moving seat (52) fixedly connected with one end of the top rod (46), and a top spring is sleeved on the surface of the top rod (46) between the moving seat (52) and the top cylinder (44); The surfaces of the corresponding ends of the rotating seat (51) and the moving seat (52) are respectively provided with recesses and protrusions that engage with each other, and when the rotating seat (51) rotates, the moving seat (52) can be repeatedly pushed to move through the repeated lifting and engagement of the protrusions and the recesses; The end of the rotating seat (51) away from the moving seat (52) is coaxially fixedly connected with a second engaging bevel gear (50), one side of the second engaging bevel gear (50) is engaged with a first engaging bevel gear (49), the first engaging bevel gear (49) is rotatably connected with the moving base (43), one end of the first engaging bevel gear (49) is coaxially fixedly connected with a moving gear (48), the lower side of the moving gear (48) is engaged with a fixed rack (47), and the fixed rack (47) is fixedly connected with the base (1).

8. A part ejector for a cold header as defined in claim 7 wherein: The inside of the top rod (46) and the top block (45) is a hollow structure that is in communication with each other, the end of the top rod (46) away from the top block (45) is fixedly connected and communicated with a piston box (53), the piston box (53) is slidably matched with the inside of the rotating seat (51), the middle part of the rotating seat (51) is fixedly connected and communicated with a first air inlet one-way valve (54), the end of the piston box (53) facing the rotating seat (51) is fixedly connected and communicated with a plurality of second air inlet one-way valves (55), and the other end of the top block (45) is fixedly connected and communicated with a plurality of one-way air outlet valves (56) at non-circular center positions.

9. A part ejector for a cold header as defined in claim 8 wherein: The interior of the one-way air outlet valve (56) is axially slidably connected with a movable piston column (57), both ends of the piston column (57) are fixedly connected with a stop block (58), the stop block (58) is blocked with both ends of the one-way air outlet valve (56) respectively, the piston column (57) surface between the two stop blocks (58) is respectively sleeved with a reset spring (60); the surface of the piston column (57) and the circumferential surface of the stop block (58) located in the air inlet of the one-way air outlet valve (56) are respectively provided with a plurality of air outlet grooves (59), and the air outlet valve on the circumferential surface of the stop block (58) does not penetrate the other end of the stop block (58).

10. A method of using a part ejector for a cold header as set forth in any of claims 1-9, wherein, The method comprises the following steps: S1: start the driving motor (5), drive the crankshaft (8) to rotate through the meshing of the driving gear (6) and the transmission gear (7) when the driving motor (5) rotates, drive the moving base (43) to move left and right through the lever assembly under the rotation of the crankshaft (8), and drive the top cylinder (44), the top rod (46) and the top block (45) to move left and right synchronously under the driving of the moving base (43); S2: drive the rotating seat (51) and the moving seat (52) to move synchronously when the moving base (43) rotates, rotate the rotating seat (51) when moving, constantly lift the moving seat (52), drive the moving seat (52) to move axially constantly, and then drive the top rod (46) to move axially constantly, so as to achieve the effect of secondary ejection; S3: when the top rod (46) drives the piston box (53) to move axially constantly, the external gas can be sucked into the top block (45) through the first air inlet one-way valve (54) and the second air inlet one-way valve (55), and is sprayed out through the one-way air outlet valve (56), the sprayed gas acts between the top block (45) and the material, and the gas pressure between the top block (45) and the material is compressed during the process of the top block (45) ejecting the material, so as to help the top block (45) to push the material away from the mold cylinder; S4: swing the swing plate (40) to the direction of the transmission gear (7), make the driving gear (39) mesh with the transmission gear (7), and the power generated when the transmission gear (7) rotates can be transmitted to the rotating disc (18), so as to make the moving plate (12) move, change the fulcrum of the lever (10), and adjust the moving distance of the top rod assembly under the driving of the lever (10).

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