Hot extrusion forming equipment for I-shaped aluminum alloy profile production

Abstract

The invention provides hot extrusion forming equipment for I-shaped aluminum alloy profile production, and relates to the technical field of aluminum alloy forming machining. The hot extrusion forming equipment for I-shaped aluminum alloy profile production comprises an extrusion cylinder, a separation type extrusion rod is arranged on the rear side of the extrusion cylinder, the separation type extrusion rod is installed on a hydraulic driving part, a heat preservation end is rotationally connected to the front side of the extrusion cylinder, and a discharging cylinder is rotationally connected to the front side of the heat preservation end. A flow storage box is installed at the position, close to the rear side, of the outer side wall of the discharging barrel, an extrusion mold is installed in the outer side wall of the discharging barrel, and a trimming and pressurizing assembly is installed on the outer side wall of the extrusion mold. The problem of poor combination of continuous forming of the two sections of aluminum blanks is solved, and extrusion force in the radial direction and the axial direction is applied to the combination position of the two sections of aluminum blanks through the separated extrusion rod and the hammering assembly, so that the strength of the combination position of the two sections of aluminum blanks is obviously improved.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloy forming and processing, in particular to hot extrusion forming equipment for producing I-shaped aluminum alloy profiles. Background Art

[0002] In the hot extrusion production process of aluminum alloy, the hot extrusion process is a crucial link. First, the aluminum alloy billet is heated to a suitable high temperature state to make it have good plasticity. Then, the aluminum billet is extruded through a die of a specific shape by the pressure of the hydraulic equipment to obtain the required profile shape. When a section of aluminum billet is successfully extruded through the plate, in order to achieve continuous production, a new aluminum billet needs to be quickly put into the extrusion cylinder, and the two sections of aluminum billet are tightly pressed with the help of the strong pressure of the extrusion equipment. In this way, the I-shaped aluminum alloy profile discharged from the die can maintain a continuous state, effectively improving production efficiency and meeting the needs of large-scale industrial production.

[0003] However, this production method has a significant problem. Since the two sections of aluminum alloy that are put in successively are not the same whole, there are obvious weak links in their connection parts, which makes it difficult to achieve the ideal connection strength. In current industrial practice, in order to improve this problem, the common method is to cut off the head of the front section of aluminum alloy. Although this method can avoid the poor combination interference caused by the oxide layer on the surface of the aluminum blank to a certain extent, it has caused new disadvantages: on the one hand, a large amount of aluminum alloy material is cut off, resulting in a waste of resources, while also increasing production costs and reducing overall production efficiency, which is not conducive to the goal of sustainable development and efficient production. On the other hand, the cutting method cannot guarantee the connection strength. This is because there are still many tiny bumps and defects in the aluminum alloy after cutting. These microscopic defects will hinder the close combination and full diffusion of atoms between the two sections of aluminum alloy when they are combined. Even under extrusion pressure, it is difficult to form enough and strong metal bonds at the connection interface of the two sections of aluminum blanks, so that it is impossible to ensure that the connection has the same high strength as the whole aluminum alloy. When subjected to external forces, the connection parts are still prone to failures such as fracture.

[0004] Based on the above viewpoints, the technicians in this field provide a hot extrusion forming equipment for producing I-shaped aluminum alloy profiles. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a hot extrusion forming equipment for the production of I-shaped aluminum alloy profiles, which solves the problem of poor bonding between two sections of aluminum billets during continuous forming. Extrusion pressure in radial and axial directions is applied to the joint of the two sections of aluminum billets through a separate extrusion rod and a hammer assembly, thereby significantly improving the strength of the joint of the two sections of aluminum billets.

[0006] To achieve the above objectives, the present invention is implemented by the following technical scheme: a hot extrusion forming device for producing I-shaped aluminum alloy profiles, comprising an extrusion barrel, a separate extrusion rod is arranged at the rear side of the extrusion barrel, the separate extrusion rod is installed on a hydraulic drive component, the front side of the extrusion barrel is rotatably connected to a heat preservation end, the front side of the heat preservation end is rotatably connected to a discharge barrel, a flow storage box is installed at the rear side of the outer wall of the discharge barrel, an extrusion die is installed inside the outer wall of the discharge barrel, and a trimming and pressurizing assembly is installed on the outer wall of the extrusion die; The insulation end includes an insulation sleeve, and a plurality of installation grooves distributed in a circular array are opened on the outer wall of the insulation sleeve, and an oil storage groove is opened at the center of each of the installation grooves, a diversion component is installed at the outer end of each of the installation grooves, and a hammer component is installed at the inner end of each of the installation grooves. The interior of the oil storage tank is filled with insulation medium, and is separated inside the oil storage tank by the hammer component and the diversion component, and a main driving component for driving the hammer component to slide and the insulation sleeve to rotate is installed on the outer wall of the discharge barrel.

[0007] Preferably, the flow diversion assembly includes a fixed plate, and an on-off valve is installed on the outer side wall of the fixed plate, and the on-off valve is connected to the flow storage box through a hose.

[0008] Preferably, the hammer assembly includes a hammer block, the top of the hammer block is fixedly connected to a guide rod sleeve, a piston plate is slidably connected inside the guide rod sleeve, an arc-shaped groove is opened on the outer side of the guide rod sleeve, the piston plate is limitedly slidably connected in the arc-shaped groove, and a sealing plate is fixedly connected to the top of the piston plate.

[0009] Preferably, the oil storage tank is divided into two parts, an upper chamber and a lower chamber, by a sealing plate; an oil circulation groove is provided on the inner side of the insulation sleeve, and the oil circulation groove is connected to the lower chamber of the oil storage tank; and one-way valves for connecting the oil circulation groove are installed at the front and rear sides of the insulation sleeve; a pressurized oil return groove is provided on the rear side of the insulation sleeve and at one end close to the piston plate, and the pressurized oil return groove is connected to the upper chamber of the oil storage tank; an expansion oil return groove is provided on the front side of the insulation sleeve and at one end away from the piston plate, and both the expansion oil return groove and the pressurized oil return groove are connected to the upper chamber of the oil storage tank.

[0010] Preferably, a rotation groove is provided on the front side wall of the thermal insulation sleeve, and an arc-shaped guide groove is provided inside the rotation groove.

[0011] Preferably, the main driving component includes a driving motor, a driving gear is installed on the output end of the driving motor, the bottom of the driving gear is fixedly connected with a self-rotating eccentric wheel, the bottom of the self-rotating eccentric wheel is pin-connected with a self-rotating connecting rod at the front side, the other end of the self-rotating connecting rod is pin-connected with a self-rotating driving piston rod, the self-rotating driving piston rod passes through the flow storage box and is connected with a clamping plate, the bottom of the clamping plate is clamped in the arc guide groove, and the driving box outside the discharging barrel is also rotatably connected with an increasing gear, the bottom of the increasing gear is fixedly connected with a hammer eccentric wheel, the bottom of the hammer eccentric wheel is pin-connected with a hammer connecting rod at the rear side, the other end of the hammer connecting rod is pin-connected with a hammer driving piston, and the hammer driving piston is arranged in a piston cylinder connected with the flow storage box.

[0012] Preferably, the trimming and pressurizing assembly includes an outer limit sleeve, the inner wall of the outer limit sleeve is slidably connected to a pressure plate at the position of the front end, and an oil storage chamber is formed between the pressure plate and the front side wall of the outer limit sleeve, and a reset plate is connected to the rear side of the pressure plate through a spring, and the reset plate is in contact with the front side wall of the extrusion mold. A trimming bag is arranged at the center of the reset plate, and the trimming bag fits with the discharge slot of the extrusion mold. A pressure valve connected to the oil storage chamber is installed on the outer wall of the outer limit sleeve, and the pressure valve is connected to the expansion return oil groove through a hose, and an expansion valve connected to the inside of the reset plate is installed on the lower side wall of the reset plate, and the expansion valve is connected to the pressurized return oil groove through a hose, and a pressure stabilizing assembly is also fixedly connected to the rear side wall of the insulation sleeve, and the pressure stabilizing assembly includes an oil return cylinder, which is connected to the pressurized return oil groove, and a spring plate is connected to the inside of the oil return cylinder through a spring.

[0013] Preferably, the separate extrusion rod includes a connecting rod sleeve, the front side wall of the connecting rod sleeve is slidingly connected with a movable extrusion rod, the outer side wall of the discharge barrel is installed with an extrusion rod matching drive assembly, the extrusion rod matching drive assembly includes an active rod sleeve, the rear end of the active rod sleeve is connected with a flow storage box, the internal limiting sliding connection of the active rod sleeve is connected with an active piston rod, and a matching rod sleeve is also provided on the front side of the active piston rod, the interior of the matching rod sleeve is connected with a matching piston rod through a spring, the front end of the active piston rod is matched with a wedge-shaped groove provided in the matching piston rod, and the bottom of the matching rod sleeve is fixedly connected with an oil filling pipe connected with the cavity between the connecting rod sleeve and the movable extrusion rod.

[0014] Beneficial Effects The present invention provides a hot extrusion forming equipment for producing I-shaped aluminum alloy profiles. It has the following technical points and beneficial effects: 1. The reset plate on the front side of the extrusion die modifies the formed aluminum blank through the trimming bag that matches the shape of the die hole. When the I-shaped profile is discharged from the die hole, the reset plate can exert a certain pressure on the edge of the profile to correct its shape in real time. When the extrusion speed is too fast, the trimming bag expands slightly, which increases the plastic pressure of the trimming bag on the profile discharged from the die hole, thereby increasing the restraint force on the profile discharged from the die hole, which can more effectively regulate the metal flow and effectively improve the deviation correction ability of the profile.

[0015] 2. When the sealing plate rises and rotates to seal the expanded oil tank, the oil no longer enters the reset plate. The oil content in the lower cavity of the oil storage tank is greater than the oil in the oil circulation tank. The two sections of the aluminum billet are connected between the oil storage tanks. Therefore, the temperature of the connection between the two sections of the aluminum billet is higher, and the thermal motion of the aluminum atoms at the connection is intensified, which is conducive to the subsequent mutual connection of the two sections of the aluminum billet.

[0016] 3. The driving motor starts, causing the hammer driving piston to begin to extend and retract back and forth, thereby continuously sucking the oil in the flow storage box, and the oil in the flow storage box will be continuously drawn back and injected from the upper cavity of the oil storage tank, thereby driving the hammer block to hammer and extrude the junction of the two aluminum billets. At the same time, the gear radius of the speed increasing gear is much smaller than the gear radius of the driving gear. Therefore, when the driving gear realizes one rotation cycle, the speed increasing gear has multiple rotation cycles, and then when the insulation end rotates for one cycle, the hammer block hammers and extrude the junction of the two aluminum billets multiple times, thereby improving the uniformity of the hammering.

[0017] 4. When the aluminum billet is hammered by the hammer block, part of the oil will enter the active rod sleeve, thereby driving the active piston rod to move forward and driving the matching piston rod to slide upward. When the matching piston rod slides upward, the oil between the connecting rod sleeve and the movable extrusion rod will be sucked through the oil filling pipe, so that the movable extrusion rod slides backward, providing space for the aluminum billet to produce plastic deformation when it is struck by the hammer block. At the same time, when the hammer eccentric wheel shrinks backward, the active piston rod and the matching piston rod are reset, so that the movable extrusion rod is reset, and then the two sections of the aluminum billet are squeezed again by the forward extending movable extrusion rod, so that the two sections of the aluminum billet are restored to the shape before the hammering. Since the two sections of the aluminum billet are squeezed in both radial and axial directions, the strength of the joint between the two sections of the aluminum billet is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Figure 2 It is a front side schematic diagram of the present invention.

[0020] Figure 3 It is a partial cross-sectional view of the present invention.

[0021] Figure 4 for Figure 3A magnified schematic diagram of center A.

[0022] Figure 5 It is a structural schematic diagram of the main drive assembly in the present invention.

[0023] Figure 6 It is a schematic diagram of the structure of the diversion component and the hammer component in the present invention.

[0024] Figure 7 It is a schematic diagram of the heat preservation end in the present invention.

[0025] Figure 8 It is an isometric side cross-sectional view of the insulation end of the present invention.

[0026] Fig. 9 It is a schematic diagram of the structure of the extrusion rod and the driving assembly in the present invention.

[0027] Fig.10 It is a schematic diagram of the cooperation between the clamping plate and the arc-shaped guide groove in the present invention.

[0028] Among them, 1. extrusion cylinder; 2. separate extrusion rod; 3. insulation end; 4. flow storage box; 5. main drive assembly; 6. trimming and pressurizing assembly; 7. extrusion rod matching drive assembly; 8. discharge cylinder; 9. pressurizing valve; 10. expansion valve; 11. voltage stabilizing assembly; 12. diversion assembly; 13. hammer assembly; 14. extrusion die; 21. Connecting rod sleeve; 22. Movable extrusion rod; 31. Insulation sleeve; 32. Installation groove; 33. Oil storage groove; 34. Rotation groove; 35. Arc guide groove; 36. One-way valve; 37. Expansion oil return groove; 38. Oil circulation groove; 39. Pressurized oil return groove; 51. Driving motor; 52. Driving gear; 53. Self-rotating eccentric wheel; 54. Self-rotating connecting rod; 55. Self-rotating driving piston rod; 56. Speed ​​increasing gear; 57. Hammering eccentric wheel; 58. Hammering connecting rod; 59. Hammering driving piston; 510. Card plate; 61. External limit sleeve; 62. Pressure plate; 63. Reset plate; 64. Trimming bag; 71. Active rod sleeve; 72. Active piston rod; 73. Matching rod sleeve; 74. Matching piston rod; 75. Oil filling pipe; 111. Oil return cylinder; 112. Spring plate; 121. fixed plate; 122. on-off valve; 131. hammer block; 132. guide rod sleeve; 133. piston plate; 134. sealing plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1, as Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the present invention provides a hot extrusion forming device for producing I-shaped aluminum alloy profiles, including an extrusion barrel 1, a separate extrusion rod 2 is arranged at the rear side of the extrusion barrel 1, and the separate extrusion rod 2 is installed on a hydraulic drive component. The hydraulic drive component can be selected as an extruder or other power equipment that provides the I-shaped aluminum alloy with hydraulic pressure for plastic deformation. The front side of the extrusion barrel 1 is rotatably connected to a heat preservation end 3, and the front side of the heat preservation end 3 is rotatably connected to a discharge barrel 8. A flow storage box 4 is installed at the rear side of the outer wall of the discharge barrel 8, an extrusion die 14 is installed inside the outer wall of the discharge barrel 8, and a trimming and pressing assembly 6 is installed on the outer wall of the extrusion die 14. The warm end 3 includes an insulation sleeve 31, and a plurality of installation grooves 32 distributed in a circular array are opened on the outer wall of the insulation sleeve 31, and an oil storage tank 33 is opened at the center of each installation groove 32, and a diversion component 12 is installed at the outer end of each installation groove 32, and a hammer component 13 is installed at the inner end of each installation groove 32. The interior of the oil storage tank 33 is filled with an insulation medium, which can be a fluid medium with a high boiling point such as hot oil, and is separated from the diversion component 12 by the hammer component 13 inside the oil storage tank 33. A main driving component 5 for driving the hammer component 13 to slide and the insulation sleeve 31 to rotate is installed on the outer wall of the discharge barrel 8.

[0031] like Figure 5 and Fig.10As shown, a rotation groove 34 is provided on the front side wall of the heat preservation sleeve 31, and an arc-shaped guide groove 35 is provided inside the rotation groove 34. The main driving assembly 5 includes a driving motor 51, and a driving gear 52 is installed on the output end of the driving motor 51. The bottom of the driving gear 52 is fixedly connected with a self-rotating eccentric wheel 53, and the bottom of the self-rotating eccentric wheel 53 is pin-connected with a self-rotating connecting rod 54 at the front side, and the other end of the self-rotating connecting rod 54 is pin-connected with a self-rotating driving piston rod 55. The self-rotating driving piston rod 55 passes through the storage box 4 and is connected with a clamping plate 510. The bottom of the clamping plate 510 is clamped in the arc-shaped guide groove 35, and the discharge barrel 8 is outside. The driving box on the side is also rotatably connected with an increasing gear 56, and the bottom of the increasing gear 56 is fixedly connected with a hammer eccentric wheel 57, and the bottom of the hammer eccentric wheel 57 is pin-connected with a hammer connecting rod 58 at the rear side, and the other end of the hammer connecting rod 58 is pin-connected with a hammer driving piston 59, and the hammer driving piston 59 is arranged in a piston cylinder connected to the flow storage box 4. When the driving motor 51 is started, the increasing gear 56 and the driving gear 52 are meshed with each other. When the movable end of the driving motor 51 rotates, the driving gear 52 rotates synchronously with the rotating eccentric wheel 53, thereby driving the rotating connecting rod 54 at the bottom of the rotating eccentric wheel 53 to rotate around The eccentric wheel 53 rotates at the center of the circle, so that the self-rotation driving piston rod 55 is extended and retracted forward and backward. Since the lower end of the clamping plate 510 fixedly connected to the front side of the self-rotation driving piston rod 55 is clamped in the arc guide groove 35, when the self-rotation driving piston rod 55 extends forward, the clamping plate 510 slides along the direction of the arc guide groove 35, thereby driving the insulation sleeve 31 to rotate as a whole, and the speed increase gear 56 meshing with the driving gear 52 drives the hammer eccentric wheel 57 to rotate, so that the hammer connecting rod 58 rotates along the center of the circle of the hammer eccentric wheel 57, so that the hammer driving piston 59 starts to extend and retract forward and backward, thereby continuously sucking the oil in the storage tank 4, and the storage tank 4 is The oil in the flow box 4 will be continuously drawn back and injected from the upper cavity of the oil storage tank 33, thereby driving the hammer block 131 to hammer and extrude the junction of the two aluminum blanks, and the gear radius of the speed increasing gear 56 is much smaller than the gear radius of the driving gear 52. Therefore, when the driving gear 52 realizes one rotation cycle, the speed increasing gear 56 has multiple rotation cycles, and then when the insulation end 3 rotates one cycle, the hammer block 131 hammers and extrude the junction of the two aluminum blanks multiple times, thereby improving the uniformity of the hammering, and utilizing the hammering to extrude the junction of the two aluminum blanks, so that the junction of the aluminum blanks flows in opposite directions, thereby significantly improving the bonding strength of the aluminum blanks.

[0032] Embodiment 2, as Figure 6 , Figure 7 and Figure 8As shown, this embodiment provides another technical solution based on the first embodiment. The flow diversion component 12 includes a fixed plate 121, and an on-off valve 122 is installed on the outer wall of the fixed plate 121. The on-off valve 122 is connected to the flow storage box 4 through a hose. The hammer assembly 13 includes a hammer block 131. The top of the hammer block 131 is fixedly connected to a guide rod sleeve 132, and a piston plate 133 is slidably connected in the guide rod sleeve 132. An arc-shaped groove body is provided on the outer side of the guide rod sleeve 132. The piston plate 133 is limitedly slidably connected in the arc groove. A sealing plate 134 is fixedly connected to the top of the piston plate 133. The oil storage tank 33 is divided into an upper cavity and a lower cavity by the sealing plate 134. An oil circulation valve is provided on the inner side of the insulation sleeve 31. The annular groove 38 and the oil circulation groove 38 are connected to the lower cavity of the oil storage tank 33, and one-way valves 36 for connecting the oil circulation groove 38 are installed at the front and rear sides of the insulation sleeve 31. The two one-way valves 36 are respectively connected to the input and output ends of the hot oil circulation device. The hot oil circulation component can be selected as a kit consisting of a suction pump and a hot oil insulation box, and the suction pump provides power for the flow of hot oil. A pressurized oil return groove 39 is opened on the rear side of the insulation sleeve 31 and at one end close to the piston plate 133. The pressurized oil return groove 39 is connected to the upper cavity of the oil storage tank 33. An expansion oil return groove 37 is opened on the front side of the insulation sleeve 31 and at one end away from the piston plate 133. The expansion oil return groove 37 and the pressurized oil return groove 39 are both connected to the upper cavity part of the oil storage tank 33.

[0033] like Figure 3 and Figure 4As shown, the trimming and pressurizing assembly 6 includes an outer limiting sleeve 61, and the inner side wall of the outer limiting sleeve 61 is slidably connected to a pressurizing plate 62 at a position near the front end, and an oil storage cavity is formed between the pressurizing plate 62 and the front side wall of the outer limiting sleeve 61. The rear side of the pressurizing plate 62 is connected to a reset plate 63 through a spring, and the reset plate 63 is in contact with the front side wall of the extrusion die 14. A trimming bag 64 is arranged at the center of the reset plate 63, and the trimming bag 64 is in contact with the discharge groove of the extrusion die 14. The outer wall of the outer limit sleeve 61 is provided with a pressurizing valve 9 connected to the oil storage chamber, and the pressurizing valve 9 is connected to the expansion oil return groove 37 through a hose, and the lower side wall of the reset plate 63 is provided with an expansion valve 10 connected to the inside of the reset plate 63, and the expansion valve 10 is connected to the pressurized oil return groove 39 through a hose, and the rear side wall of the insulation sleeve 31 is also fixedly connected with a pressure stabilizing component 11, and the pressure stabilizing component 11 includes an oil return cylinder 111, and the oil return cylinder 11 1 is connected to the pressurized oil return groove 39, and the oil return cylinder 111 is connected with a spring plate 112 through a spring. When the sealing plate 134 rises and rotates to close the expansion oil return groove 37, the oil no longer enters the reset plate 63. At the same time, if the oil entering the front side of the pressurizing plate 62 or the reset plate 63 tends to be saturated, the oil will squeeze the spring plate 112 and enter the oil return cylinder 111 to avoid the situation where the oil entering the pressurizing plate 62 and the reset plate 63 is saturated and the sealing plate 134 cannot rise. When the sealing plate 134 rises to the limit position, the pressurizing valve 9 and the expansion valve 10 are both closed to ensure that the oil no longer enters the trimming pressurizing assembly 6. At this time, the oil content in the lower cavity of the oil storage tank 33 is greater than the oil in the oil circulation tank 38, and the connection of the two aluminum billets is between the oil storage tanks 33. Therefore, the temperature at the connection of the two aluminum billets is higher, and the thermal motion of the aluminum atoms at the connection is intensified, which is conducive to the subsequent mutual connection of the two aluminum billets.

[0034] like Figure 2 and Fig. 9As shown, the separate extrusion rod 2 includes a connecting rod sleeve 21, and the front side wall of the connecting rod sleeve 21 is slidably connected with a movable extrusion rod 22 in an upper limit position. An extrusion rod matching drive assembly 7 is installed on the outer side wall of the discharge barrel 8. The extrusion rod matching drive assembly 7 includes an active rod sleeve 71, and the rear end of the active rod sleeve 71 is connected to the flow storage box 4. The internal limit position sliding connection of the active rod sleeve 71 is connected with an active piston rod 72, and a matching rod sleeve 73 is also provided on the front side of the active piston rod 72. The inside of the matching rod sleeve 73 is connected with a matching piston rod 74 through a spring. The front end of the active piston rod 72 is matched with a wedge-shaped groove provided in the matching piston rod 74. The bottom of the matching rod sleeve 73 is fixedly connected with an oil injection pipe 75 connected with the cavity between the connecting rod sleeve 21 and the movable extrusion rod 22. When the aluminum billet is struck by the hammer block 131 During hammering, part of the oil will enter the active rod sleeve 71, thereby driving the active piston rod 72 to move forward and driving the matching piston rod 74 to slide upward. When the matching piston rod 74 slides upward, the oil between the connecting rod sleeve 21 and the movable extrusion rod 22 will be sucked through the oil filling pipe 75, so that the movable extrusion rod 22 slides backward, providing space for the aluminum blank to produce plastic deformation when it is struck by the hammer block 131. When the hammering eccentric wheel 57 shrinks backward, the active piston rod 72 and the matching piston rod 74 are reset, so that the movable extrusion rod 22 is reset, and then the forward-extended movable extrusion rod 22 is used to extrude the two sections of the aluminum blank again, so that the two sections of the aluminum blank are restored to the shape before hammering. Since the two sections of the aluminum blank are squeezed in both radial and axial directions, the strength of the joint between the two sections of the aluminum blank is significantly improved.

[0035] Working principle: The heated aluminum blank to be formed is placed into the extrusion barrel 1 through the placing mechanism, and then the separated extrusion rod 2 is driven by the extruder to extend into the extrusion barrel 1, and then the aluminum blank is extruded, so that the aluminum blank is plastically deformed under the action of the extrusion die 14, and is extruded from the die hole of the extrusion die 14 to form the required shape and size. In the process of hot extrusion, the formed aluminum alloy profile will have slight deviations due to the unevenness of the blank, the wear of the die, etc., especially the edge position of the I-shaped profile is thinner, and when it is discharged from the die hole, the edge position is prone to curling and other defects. The reset plate 63 arranged on the front side of the extrusion die 14 modifies the formed aluminum blank through the trimming bag 64 that matches the shape of the film hole. When the I-shaped profile is discharged from the die hole, the reset plate 63 can trim the edge position of the profile. A certain pressure is applied to the position to correct its shape in real time. When the extrusion speed is too fast, resulting in excessive pressure inside the extrusion cylinder 1, the aluminum billet will enter the oil storage tank 33 from the inner side of the oil storage tank 33 and push the hammer block 131 to rise. Since the circulation flow rate entering the oil circulation tank 38 remains unchanged and the liquid cannot be compressed, the hammer block 131 will drive the hammer assembly 13 to move upward as a whole. At this time, the on-off valve 122 is closed, and the sealing plate 134 closes the pressurized oil return tank 39. The oil stored in the upper cavity of the oil storage tank 33 flows into the reset plate 63 through the hose, thereby driving the trimming bag 64 to expand slightly, so that the trimming bag 64 increases the plastic pressure of the profile discharged from the die hole, thereby increasing the restraint force on the profile discharged from the die hole, and can more effectively regulate the metal flow, and effectively improve the correction ability of the profile.

[0036] When a section of aluminum billet is extruded halfway, the extruder drives the separation extrusion rod 2 to leave the extrusion barrel 1, and then a new aluminum billet is put into the extrusion barrel 1. The extruder drives the separation extrusion rod 2 to enter the extrusion barrel 1 again, so that the new aluminum billet is in close contact with the old aluminum billet. Then the oil circulation device increases the oil injection amount, thereby increasing the oil flow entering the piston plate 133 and the hammer block 131. The oil will drive the piston plate 133 to slide upward, and the guide rod sleeve 132 is provided with an arc groove, so the piston plate 133 is moved upward. When the pressure plate 62 is pressed, the sealing plate 134 will rotate, thereby driving the sealing plate 134 to leave the pressurized oil return groove 39. At this time, the oil in the upper cavity will first enter the rear side of the outer limit sleeve 61 and the interior of the reset plate 63 from the pressurized oil return groove 39 and the expansion oil return groove 37 respectively. At this time, the reset plate 63 expands to the limit, so that the reset plate 63 and the aluminum blank are fixed together. At the same time, after the oil enters the front side of the pressure plate 62, it will drive the pressure plate 62 to move backward, thereby squeezing the spring between the pressure plate 62 and the reset plate 63, and increasing the pressure of the spring on the reset plate 63.

[0037] When the sealing plate 134 rises and rotates to close the expansion return oil groove 37, the oil no longer enters the reset plate 63. At the same time, if the oil entering the front side of the pressure plate 62 or the reset plate 63 tends to be saturated, the oil will squeeze the spring plate 112 and enter the return oil cylinder 111 to avoid the saturation of the oil entering the pressure plate 62 and the reset plate 63, resulting in the sealing plate 134 being unable to rise. When the sealing plate 134 rises to the limit position, the pressure valve 9 and the expansion valve 10 are both closed to ensure that the oil no longer enters the trimming pressurizing assembly 6. At this time, the oil content in the lower cavity of the oil storage tank 33 is greater than the oil in the oil circulation tank 38, and the two sections of the aluminum blank are connected between the oil storage tanks 33. Therefore, the temperature at the junction of the two sections of the aluminum blank is higher, and the thermal motion of the aluminum atoms at the junction is intensified, which is conducive to the subsequent mutual connection of the two sections of the aluminum blank.

[0038] When the sealing plate 134 rises to the limit position, the on-off valve 122 opens, and then the driving motor 51 is started. When the movable end of the driving motor 51 rotates, the driving gear 52 rotates synchronously with the rotating eccentric wheel 53, thereby driving the rotating connecting rod 54 at the bottom of the rotating eccentric wheel 53 to rotate around the center of the rotating eccentric wheel 53, so that the rotating driving piston rod 55 can be extended and retracted forward and backward. Since the lower end of the clamping plate 510 fixedly connected to the front side of the rotating driving piston rod 55 is stuck in the arc guide groove 35, when the rotating driving piston rod 55 extends forward, the clamping plate 510 slides along the direction of the arc guide groove 35, thereby driving the insulation cover 31 to rotate as a whole, and the speed increasing gear 56 meshing with the driving gear 52 will drive the hammer eccentric wheel 57 to rotate, so that the hammer connecting rod 58 moves along the hammer The center of the hammer eccentric wheel 57 rotates, so that the hammer driving piston 59 begins to stretch back and forth, and then continuously sucks the oil in the flow storage box 4, and the oil in the flow storage box 4 will be continuously drawn back and injected from the upper cavity part of the oil storage tank 33, thereby driving the hammer block 131 to hammer and extrude the junction of the two aluminum blanks, and the gear radius of the speed increase gear 56 is much smaller than the gear radius of the driving gear 52. Therefore, when the driving gear 52 realizes one rotation cycle, the speed increase gear 56 has multiple rotation cycles, and then when the insulation end 3 rotates one cycle, the hammer block 131 hammers and extrude the junction of the two aluminum blanks for multiple times, thereby improving the uniformity of the hammering, and utilizing the hammering to extrude the junction of the two aluminum blanks, so that the junction of the aluminum blanks flows in opposite directions, thereby significantly improving the bonding strength of the aluminum blanks.

[0039] When the aluminum blank is hammered by the hammer block 131, part of the oil will enter the active rod sleeve 71, thereby driving the active piston rod 72 to move forward and driving the matching piston rod 74 to slide upward. When the matching piston rod 74 slides upward, the oil between the connecting rod sleeve 21 and the movable extrusion rod 22 will be sucked through the oil filling pipe 75, so that the movable extrusion rod 22 slides backward, providing space for the aluminum blank to produce plastic deformation when it is struck by the hammer block 131. When the hammer eccentric wheel 57 shrinks backward, the active piston rod 72 and the matching piston rod 74 are reset, so that the movable extrusion rod 22 is reset, and then the two sections of the aluminum blank are squeezed again by the forward extending movable extrusion rod 22, so that the two sections of the aluminum blank are restored to the shape before the hammering. Since the two sections of the aluminum blank are squeezed in both radial and axial directions, the strength of the joint between the two sections of the aluminum blank is significantly improved.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot extrusion forming device for producing I-shaped aluminum alloy profiles, comprising an extrusion barrel (1), characterized in that: A separate extrusion rod (2) is provided at the rear side of the extrusion barrel (1), and the separate extrusion rod (2) is mounted on a hydraulic drive component. The front side of the extrusion barrel (1) is rotatably connected to a heat preservation end (3), and the front side of the heat preservation end (3) is rotatably connected to a discharge barrel (8). A flow storage box (4) is installed at the rear side of the outer wall of the discharge barrel (8), an extrusion die (14) is installed inside the outer wall of the discharge barrel (8), and a trimming and pressurizing assembly (6) is installed on the outer wall of the extrusion die (14); The insulation end (3) comprises an insulation sleeve (31), the outer wall of the insulation sleeve (31) is provided with a plurality of mounting grooves (32) distributed in a circumferential array, and an oil storage groove (33) is provided at the center of each mounting groove (32), a flow diversion component (12) is installed at the outer end of each mounting groove (32), and a hammer component (13) is installed at the inner end of each mounting groove (32), the interior of the oil storage groove (33) is filled with insulation medium, and is separated from the flow diversion component (12) by the hammer component (13) and the flow diversion component (12) in the oil storage groove (33), and a main driving component (5) for driving the hammer component (13) to slide and the insulation sleeve (31) to rotate is installed on the outer wall of the discharge barrel (8).

2. The hot extrusion forming equipment for producing I-shaped aluminum alloy profiles according to claim 1, characterized in that: The flow splitter assembly (12) comprises a fixed plate (121), and an on-off valve (122) is mounted on the outer side wall of the fixed plate (121); the on-off valve (122) is connected to the flow storage box (4) via a hose.

3. The hot extrusion forming equipment for producing I-shaped aluminum alloy profiles according to claim 1, characterized in that: The hammer assembly (13) comprises a hammer block (131), the top of the hammer block (131) is fixedly connected to a guide rod sleeve (132), a piston plate (133) is slidably connected inside the guide rod sleeve (132), an arc-shaped groove is formed on the outer side of the guide rod sleeve (132), the piston plate (133) is limitedly slidably connected in the arc-shaped groove, and a sealing plate (134) is fixedly connected to the top of the piston plate (133).

4. The hot extrusion forming equipment for producing I-shaped aluminum alloy profiles according to claim 3, characterized in that: The oil storage tank (33) is divided into an upper chamber and a lower chamber by a sealing plate (134); an oil circulation groove (38) is provided at an inner side of the thermal insulation sleeve (31); the oil circulation groove (38) is communicated with the lower chamber of the oil storage tank (33); and check valves (36) for connecting the oil circulation groove (38) are installed at the front and rear sides of the thermal insulation sleeve (31); a pressurized oil return groove (39) is provided at the rear side of the thermal insulation sleeve (31) and at one end close to the piston plate (133); the pressurized oil return groove (39) is communicated with the upper chamber of the oil storage tank (33); and an expansion oil return groove (37) is provided at the front side of the thermal insulation sleeve (31) and at one end away from the piston plate (133); the expansion oil return groove (37) and the pressurized oil return groove (39) are both communicated with the upper chamber of the oil storage tank (33).

5. The hot extrusion forming equipment for producing I-shaped aluminum alloy profiles according to claim 1, characterized in that: A rotation groove (34) is provided on the front side wall of the heat-insulating sleeve (31), and an arc-shaped guide groove (35) is provided inside the rotation groove (34).

6. The hot extrusion forming equipment for producing I-shaped aluminum alloy profiles according to claim 4, characterized in that: The main drive assembly (5) comprises a drive motor (51), an output end of the drive motor (51) is mounted with a driving gear (52), a bottom of the driving gear (52) is fixedly connected to a self-rotating eccentric wheel (53), a bottom of the self-rotating eccentric wheel (53) is pin-connected to a self-rotating connecting rod (54) at a front position, the other end of the self-rotating connecting rod (54) is pin-connected to a self-rotating driving piston rod (55), the self-rotating driving piston rod (55) passes through the flow storage box (4) and is connected to a clamping plate (510), the The bottom of the clamping plate (510) is clamped in the arc-shaped guide groove (35), and a speed-increasing gear (56) is rotatably connected in the driving box outside the discharge barrel (8). The bottom of the speed-increasing gear (56) is fixedly connected to a hammer eccentric wheel (57), and a hammer connecting rod (58) is pin-connected at the rear side of the bottom of the hammer eccentric wheel (57). The other end of the hammer connecting rod (58) is pin-connected to a hammer driving piston (59), and the hammer driving piston (59) is arranged in a piston cylinder connected to the flow storage box (4).

7. The hot extrusion forming equipment for producing I-shaped aluminum alloy profiles according to claim 1, characterized in that: The trimming and pressurizing assembly (6) comprises an outer limiting sleeve (61), the inner side wall of the outer limiting sleeve (61) is slidably connected to a pressurizing plate (62) at a position limiting position near the front end, an oil storage cavity is formed between the pressurizing plate (62) and the front side wall of the outer limiting sleeve (61), the rear side of the pressurizing plate (62) is connected to a reset plate (63) via a spring, the reset plate (63) is in contact with the front side wall of the extrusion die (14), a trimming bag (64) is arranged at the center of the reset plate (63), the trimming bag (64) is in contact with the discharge groove of the extrusion die (14), and a spring is installed on the outer side wall of the outer limiting sleeve (61) to be in contact with the outer side wall of the outer limiting sleeve (61). A pressurizing valve (9) is connected to the oil storage chamber, the pressurizing valve (9) is connected to the expansion oil return groove (37) through a hose, and an expansion valve (10) is installed on the lower side wall of the reset plate (63) and is connected to the inside of the reset plate (63), the expansion valve (10) is connected to the pressurizing oil return groove (39) through a hose, and a pressure stabilizing component (11) is fixedly connected to the rear side wall of the thermal insulation sleeve (31), the pressure stabilizing component (11) includes an oil return cylinder (111), the oil return cylinder (111) is connected to the pressurizing oil return groove (39), and the inside of the oil return cylinder (111) is connected to a spring plate (112) through a spring.

8. The hot extrusion forming equipment for producing I-shaped aluminum alloy profiles according to claim 1, characterized in that: The separate extrusion rod (2) comprises a connecting rod sleeve (21), the front side wall of the connecting rod sleeve (21) is slidably connected to a movable extrusion rod (22), the outer side wall of the discharge barrel (8) is mounted with an extrusion rod matching drive assembly (7), the extrusion rod matching drive assembly (7) comprises an active rod sleeve (71), the rear end of the active rod sleeve (71) is connected to the flow storage box (4), the inside of the active rod sleeve (71) is slidably connected to an active piston rod (72), and a matching rod sleeve (73) is further provided on the front side of the active piston rod (72), the inside of the matching rod sleeve (73) is connected to a matching piston rod (74) via a spring, the front end of the active piston rod (72) is matched with a wedge-shaped groove provided in the matching piston rod (74), and the bottom of the matching rod sleeve (73) is fixedly connected with an oil injection pipe (75) connected to the cavity between the connecting rod sleeve (21) and the movable extrusion rod (22).

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