Aluminum rod extrusion lengthening apparatus

Abstract

The application relates to an aluminum bar extrusion lengthening device, which comprises an upper die, a die core fixed to the side wall of the upper die, a separation boss arranged around the connecting root of the die core and the upper die, an exhaust core cone sleeved on the die core, the end of the die core protruding from the exhaust core cone, a plurality of exhaust grooves arranged on the side wall of the exhaust core cone, a plurality of exhaust holes arranged on the exhaust grooves, the exhaust holes being communicated with the separation boss and the inside of the upper die, and a lower die arranged at the side of the die core of the side wall of the upper die. The exhaust core cone is arranged in a taper shape, can guide the aluminum profile to the same size as the die core, can make the gas discharged from the exhaust holes on the exhaust grooves when the aluminum material flows along the taper, and the exhaust holes always keep an inclined upward angle opposite to the direction of gravity, so that the aluminum material is prevented from blocking the exhaust holes and the gas is preferentially discharged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aluminum material forming, and particularly relates to an aluminum rod extrusion and lengthening equipment. BACKGROUND

[0002] Aluminum extrusion forming is a relatively simple and low-cost process, which is commonly used for producing standard profiles. This process is a processing technology for forming a product with a specific cross-sectional shape by applying high pressure to the aluminum billet in the mold cavity after the aluminum alloy material is heated to a plastic state. The shape of the aluminum profile is determined by the extrusion die.

[0003] The extrusion quality of the aluminum profile is closely related to the extrusion die. During extrusion, because the aluminum material is closely attached to the die, the phenomenon of gas being trapped between the aluminum material and the die often occurs. If the gas cannot be discharged, the surface of the aluminum profile is easy to delaminate and peel, or the gas pores are generated in the aluminum profile, which weakens the mechanical properties of the profile. SUMMARY

[0004] In view of the above problems, the present application provides an aluminum rod extrusion and lengthening equipment to at least partially solve the above problems.

[0005] The technical scheme adopted by the present application is as follows: the present application provides an aluminum rod extrusion and lengthening equipment, which comprises a conveying table, a die holder is arranged on the conveying table, an upper die is arranged in the die holder, a hydraulic machine is further arranged on the conveying table, and the hydraulic machine is arranged on the material inlet side of the upper die in the die holder.

[0006] Further, a plurality of through flow holes are arranged on the side wall of the upper die, and a die core is fixed to the side wall of the upper die.

[0007] Further, a lower die is arranged on the side wall of the die core on the side of the upper die, the lower die is sleeved on the die core, and the inner cavity of the lower die is in an open shape.

[0008] Further, a separation boss is arranged around the connecting root of the die core and the upper die, an exhaust core cone is sleeved on the die core, the lower die is sleeved on the periphery of the exhaust core cone, and the end of the die core protrudes from the exhaust core cone.

[0009] Further, a plurality of exhaust grooves are arranged on the side wall of the exhaust core cone, a plurality of exhaust holes are arranged on the exhaust grooves, the exhaust holes are in communication with the separation boss and the inner part of the upper die, and are used for discharging gas outward.

[0010] Further, the angle of the side wall of the exhaust groove is not parallel to the taper surface of the exhaust core cone, preferably, the side wall of the exhaust groove is in a vertical direction perpendicular to the conveying table, the exhaust holes are arranged on the vertical side wall of the exhaust groove, and the initial section of the exhaust holes always maintains an inclined upward angle opposite to the direction of gravity.

[0011] Further, in order to uniformly treat the gas in the exhaust hole, the exhaust core cone is provided with a first collection groove near the root of the upper die, and all the exhaust holes are communicated with the first collection groove.

[0012] Further, the separation boss is provided with a second collection groove, the first collection groove is communicated with the second collection groove, and the second collection groove is provided with a plurality of guide holes communicated with the upper die.

[0013] Further, in order to guide the gas in the upper die to the periphery, a plurality of outer exhaust holes are arranged in the upper die, the outer exhaust holes are communicated with the guide holes, an annular groove is arranged on the circumferential side wall of the upper die, the annular groove is communicated with the outer exhaust holes, and the annular groove is communicated with the air hole on the mold frame.

[0014] The present application has the following beneficial effects: the exhaust core cone is tapered, which can guide the aluminum profile to the same size as the mold core, and can make the gas exhaust from the exhaust hole on the exhaust groove when the aluminum material flows along the taper, and the exhaust hole always maintains an upward inclined angle opposite to the direction of gravity to avoid the aluminum material blocking the exhaust hole and make the gas exhaust preferentially. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the aluminum rod extrusion and elongation equipment of the embodiment of the present application;

[0016] Figure 2 It is a sectional view of the upper die, the lower die and the exhaust core cone;

[0017] Figure 3 It is an exploded view of the upper die, the lower die and the exhaust core cone;

[0018] Figure 4 It is a sectional view of the exhaust core cone;

[0019] Figure 5 It is a structural schematic view of the upper die;

[0020] Figure 6 It is a sectional view of the upper die.

[0021] 1, conveying table, 2, hydraulic machine, 3, mold frame, 4, upper die, 5, lower die, 6, exhaust core cone, 7, exhaust groove, 8, exhaust hole, 9, first collection groove, 10, shunt hole, 11, separation boss, 12, mold core, 13, second collection groove, 14, guide hole, 15, outer exhaust hole, 16, annular groove.

[0022] The drawings are used to provide further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0024] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0025] As shown in Figure 1 , an aluminum rod extrusion lengthening device provided by the embodiments of the present application comprises a conveying table 1 for conveying a heated aluminum rod, a mold frame 3 is arranged on the conveying table 1, an upper mold 4 is arranged in the mold frame 3, the heated aluminum rod is fed from one side of the upper mold 4, a hydraulic machine 2 is further arranged on the conveying table 1, the hydraulic machine 2 is arranged on the feeding side of the upper mold 4 in the mold frame 3, and the hydraulic machine 2 applies pressure to the aluminum rod to press the heated plastic aluminum rod into the upper mold 4.

[0026] As shown in Figure 2 and Figure 3 , a plurality of groups of through flow holes 10 are arranged on the side wall of the upper mold 4, the number of the flow holes 10 is related to the cross-sectional shape of the aluminum profile to be processed, after the heated aluminum rod is extruded by the hydraulic machine 2, the aluminum rod will be divided into a plurality of groups and flow into the flow holes 10, the aluminum rod is separated into more fine strands, so as to be extruded and formed subsequently, the side wall of the upper mold 4 is fixed with a mold core 12, the cross-sectional shape of the mold core 12 is the same as the inner side wall of the cross section of the aluminum profile, that is, the mold core 12 is used to shape the inner side wall of the aluminum profile.

[0027] The side wall of the upper mold 4 on the side of the mold core 12 is provided with a lower mold 5, the lower mold 5 is sleeved on the mold core 12, the inner cavity of the lower mold 5 is in an open shape, when the aluminum material flows and extrudes, it gradually flows from the large opening end of the lower mold 5 to the small opening end, and then cooperates with the fixed shape of the mold core 12, so that the aluminum material flows in the cavity with gradually decreasing gap, so as to reduce the resistance of the aluminum material during extrusion, and gradually shape the aluminum material to the set thickness, so as to gradually extrude and form the aluminum material, and the gap shape formed by the lower mold 5 away from the upper mold 4 and the mold core 12 is the same as the cross section of the aluminum profile, that is, the end cross-sectional shape of the inner cavity of the lower mold 5 defines the outer wall of the aluminum profile, and the cross-sectional shape of the mold core 12 defines the inner wall of the aluminum profile, under the cooperation of the lower mold 5 and the mold core 12, the extruded aluminum material is shaped into a set pipe type.

[0028] Combination Figure 5 As shown, a separation boss 11 is provided around the connection root of the mold core 12 and the upper mold 4. The cross-sectional dimension of the separation boss 11 is larger than that of the mold core 12. An exhaust core cone 6 is fitted on the mold core 12. The lower mold 5 is fitted around the exhaust core cone 6. The exhaust core cone 6 can guide the flowing aluminum material to move along a certain slope, further reducing the gap in the aluminum material flow space, so that the aluminum material slowly reduces its thickness and reduces the forming resistance of the aluminum material. At the same time, in order not to affect the final shaping of the aluminum material, the end of the mold core 12 protrudes out of the exhaust core cone 6, that is, the cross-sectional shape of the aluminum material is still determined by the lower mold 5 and the mold core 12 and will not be affected by the exhaust core cone 6.

[0029] like Figure 4 As shown, in order to discharge the gas generated during the aluminum extrusion and shaping process, the side wall of the exhaust core cone 6 is provided with multiple sets of exhaust grooves 7, and the exhaust grooves 7 are provided with multiple sets of exhaust holes 8. The exhaust holes 8 are connected to the separation boss 11 and the interior of the upper mold 4, and are used to discharge the gas outward.

[0030] The sidewall angle of the exhaust groove 7 is not parallel to the tapered surface of the exhaust core cone 6. Preferably, the sidewall of the exhaust groove 7 is perpendicular to the vertical direction of the conveyor table 1. The exhaust hole 8 is located on the vertical sidewall of the exhaust groove 7, and the initial section of the exhaust hole 8 always maintains an upward tilt angle opposite to the direction of gravity. That is, on different sides of the exhaust core cone 6, the angle between each exhaust hole 8 and the horizontal plane is not the same. It is necessary to ensure that the guiding direction of the initial section of the exhaust hole 8 on each side is obtuse with respect to the direction of gravity. Under this angle setting, the pipe will be pulled downward by gravity first, rather than moving into the exhaust hole 8. Only the internal gas is squeezed into the exhaust air, thereby completing the exhaust operation. In some embodiments, the sidewall of the exhaust groove 7 can also be set to be inclined.

[0031] In order to treat the gas in the vent holes 8 uniformly, the vent core cone 6 is provided with a first collecting groove 9 near the root of the upper die 4. All the vent holes 8 are connected to the first collecting groove 9, that is, the gas in each side of the tube will be introduced into the first collecting groove 9 for centralized treatment during tube extrusion molding.

[0032] like Figure 5 and Figure 6 As shown, the separating boss 11 is provided with a second collecting groove 13. The first collecting groove 9 is connected to the second collecting groove 13. The gas collected in the first collecting groove 9 is further guided to the end of the second collecting groove 13. The second collecting groove 13 is provided with multiple sets of guide holes 14 that are connected to the upper mold 4. The gas in the second collecting groove 13 is further guided into the upper mold 4 through the guide holes 14. The number of guide holes 14 is adapted to the number of sidewalls of the exhaust core cone 6 in order to improve the exhaust speed and reduce the impact of gas on the forming of the pipe.

[0033] In order to guide the gas in the upper die 4 to the periphery, a plurality of groups of outer exhaust holes 15 are arranged in the upper die 4, the outer exhaust holes 15 are communicated with the guide holes 14, the annular grooves 16 are arranged on the circumferential side wall of the upper die 4 and communicated with the outer exhaust holes 15, the annular grooves 16 are communicated with the gas holes (not shown in the drawings) on the mold holder 3, finally, the gas in each guide hole 14 is gathered into the annular groove 16 through the outer exhaust hole 15, and then discharged out of the equipment from the gas hole on the mold holder 3, thereby completing the process of discharging gas from inside to outside in the pipe extrusion process.

[0034] The specific working principle is as follows:

[0035] After the aluminum rod is heated, it is placed on the conveying table 1 between the hydraulic machine 2 and the mold holder 3, and then the hydraulic machine 2 is started, the hydraulic machine 2 pushes the aluminum rod to move towards the upper die 4, when the aluminum rod contacts the upper die 4, the aluminum rod is divided into more smaller aluminum materials by the shunt hole 10 under the action of pressure.

[0036] The extruded aluminum material enters from each shunt hole 10, reaches the separation boss 11, and continues to move to the surface of the exhaust core cone 6 from the separation boss 11, until it flows to the mold core 12, in this process, the gap between the exhaust core cone 6 and the inner wall of the lower die 5 gradually decreases, so that the aluminum material is extruded into a sheet shape which has not yet been fixed.

[0037] When the aluminum material moves to the exhaust groove 7, the gas contained in the aluminum material moves to the opposite side of the gravity from the exhaust hole 8, while the aluminum material moves out of the exhaust groove 7 under the action of gravity, thrust and inertia, and continues to move along the surface of the exhaust core cone 6 until it moves to the next group of exhaust grooves 7.

[0038] After the gas enters from the exhaust hole 8, it reaches the first collection groove 9 and the second collection groove 13, and then enters the guide hole 14, and finally enters the annular groove 16 from the outer exhaust hole 15, and is discharged from the mold holder 3, when the aluminum material reaches the next group of exhaust grooves 7, the above process is repeated to complete the exhaust.

[0039] When the aluminum material moves to the tip of the exhaust core cone 6, the aluminum material contacts the outer wall of the mold core 12, completing the shaping of the inner wall profile of the cross section of the aluminum profile, while the opening cavity of the lower die 5 shapes the outer wall profile of the aluminum profile, thereby completing the extrusion and shaping of the whole aluminum profile.

[0040] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; thus the use of any

[0041] The above description of the application and its embodiments is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the purpose of the application, without creative design, similar structure and embodiments of the technical solution can be designed, which should belong to the protection scope of the application.

Claims

1. An aluminum bar extrusion and stretching device, comprising a die holder (3), characterized in that, Also includes: The upper mold (4) is fixed on the mold frame (3). The upper mold (4) has a mold core (12) fixed on its side wall. The mold core (12) and the upper mold (4) are connected by a separation boss (11). The exhaust cone (6) is sleeved on the mold core (12). The end of the mold core (12) protrudes from the exhaust cone (6). The side wall of the exhaust cone (6) is provided with multiple exhaust grooves (7). The exhaust grooves (7) are provided with multiple exhaust holes (8). The exhaust holes (8) are connected to the separation boss (11) and the interior of the upper mold (4) to discharge gas outward. The lower mold (5) is located on the side wall of the mold core (12) in the upper mold (4); The exhaust hole (8) is located on the vertical side wall of the exhaust groove (7), and the initial section of the exhaust hole (8) always maintains an upward tilt angle opposite to the direction of gravity. The exhaust core cone (6) is provided with a first collecting groove (9) near the root of the upper mold (4), and all the exhaust holes (8) are connected to the first collecting groove (9).

2. The aluminum rod extrusion and extension equipment according to claim 1, characterized in that: The separation boss (11) is provided with a second collection groove (13), the first collection groove (9) is connected to the second collection groove (13), and the second collection groove (13) is provided with multiple sets of guide holes (14) connected to the upper mold (4). The number of guide holes (14) is adapted to the number of sidewalls of the exhaust core cone (6).

3. The aluminum rod extrusion and extension equipment according to claim 2, characterized in that: The upper mold (4) is provided with multiple sets of external discharge holes (15), which are connected to the guide hole (14).

4. The aluminum rod extrusion and extension equipment according to claim 3, characterized in that: The upper mold (4) has an annular groove (16) on its circumferential sidewall. The annular groove (16) is connected to the outer discharge hole (15) and the annular groove (16) is connected to the air hole on the mold frame (3).

5. The aluminum rod extrusion and extension equipment according to claim 1, characterized in that: The upper mold (4) is provided with multiple flow holes (10), and the number of flow holes (10) is related to the cross-sectional shape of the aluminum profile.

6. The aluminum rod extrusion and extension equipment according to claim 1, characterized in that: The lower mold (5) is fitted onto the mold core (12) and the venting core cone (6), and the inner cavity of the lower mold (5) is open.

Images