Anti-loosening and tightening extrusion die and aluminum alloy forming method

Abstract

The invention discloses an anti-loosening and tightening extrusion die and an aluminum alloy forming method, which relates to the field of fasteners, including a plurality of multi-segment dies, each of which is provided with a die cavity, and the plurality of multi-segment dies are installed on a die base through fasteners, and a cutting assembly is connected to the die base; the cutting assembly includes a slotting unit, a cutting unit and a driving unit, the slotting unit includes a plurality of slotting keys, the plurality of slotting keys are arranged in a circle and correspond to the die cavity, the cutting unit includes a plurality of slotting knives and a cutting knife, the slotting knives are arranged obliquely and the plurality of slotting knives are arranged horizontally, the slotting keys are arranged on a side of the slotting knives away from the multi-segment dies, and the cutting knife is located on a side of the slotting knives close to the multi-segment dies. The dust and oil stains on the surface of the aluminum alloy bar are cut to prevent the oil stains and dust from affecting the extrusion forming of the aluminum alloy bar, improve the forming quality of the aluminum alloy profile, ensure the stability of the aluminum alloy bar when cutting the aluminum alloy, and have a better cutting effect on the aluminum alloy bar.

Description

Technical Field

[0001] The invention relates to the field of fasteners, and in particular to an anti-loosening and fastening extrusion die and an aluminum alloy forming method. Background Art

[0002] An extrusion die is a special tool used for extrusion molding. It is usually installed at the upper end of an extruder and is used to produce pipes or profiles. During the extrusion process, metal or other plastic materials are fed into the mold cavity. By pushing, the material is forced to flow through the narrow channel of the mold, thus forming a continuous product with a certain cross-sectional shape.

[0003] Aluminum alloy profiles are often manufactured through extrusion die molding. Aluminum alloy profile extrusion molding is a metal plastic processing method. The heated aluminum alloy round cast rod is placed into the extrusion barrel of the extruder. Under the action of high pressure, the aluminum alloy is forced to be extruded through a die with a specific cross-sectional shape, thereby producing a profile with a complex cross-sectional shape.

[0004] Chinese patent application CN103072300A discloses a detachable pressure rod mold connector, which includes a pressure plate connection assembly and a mold connection assembly, the pressure plate assembly includes a base, a bayonet and a fixing screw, the base is provided with a connection hole and a bayonet hole, the mold assembly includes a connection plate and a column, the column is provided with an arc notch, the bayonet and the column are matched through the arc notch to achieve detachable connection, when replacing the mold, only the mold connection assembly of uniform specifications needs to be replaced, thereby improving production efficiency;

[0005] Chinese patent application CN103790908A discloses a connection mechanism in a pipe-making mold, which is used in a pipe-making mold, wherein a first component and a second component are axially adjacent, the first component has a plurality of circumferentially distributed threaded blind holes, and the second component has a corresponding through hole, one end of a stud passes through the through hole, is threadedly connected in the blind hole, and a nut is installed at the other end. Bolts are installed in the plurality of threaded through holes on the nut, and the ends are pressed against the second component. This design evenly distributes the force to the plurality of bolts, is convenient for tightening, and has uniform force, thereby improving the reliability of the connection and the convenience of assembly and disassembly, and is particularly suitable for large pipe-making molds.

[0006] The above patents and prior art also have the following defects:

[0007] Before the heated aluminum alloy bar enters the extrusion die, it needs to go through multiple processes for heating, clamping and transfer. The surface of the aluminum alloy bar is in contact with the clamping parts, transmission rollers and other parts, and is easily contaminated with dust and oil. When the aluminum alloy bar is formed, the dust and oil are mixed in the aluminum alloy bar, which can easily cause the aluminum alloy bar to be poorly formed and lead to quality defects, especially when the aluminum alloy bar is welded in the extrusion die, which can easily cause the weld seam to crack.

[0008] Therefore, the present application provides an anti-loosening and tightening extrusion die and aluminum alloy forming method to meet the needs. Summary of the invention

[0009] The purpose of the present application is to provide an anti-loosening and tightening extrusion die and an aluminum alloy forming method, in which the surface of the aluminum alloy bar is formed with dot-shaped protrusions by opening horizontal grooves and spiral grooves, and the cutting tool moves in a circular motion to cut off the dot-shaped protrusions on the surface of the aluminum alloy bar, and cuts the surface of the aluminum alloy bar to make it smooth, and can cut a layer of the surface of the aluminum alloy bar, cut off the dust and oil stains on the surface of the aluminum alloy bar, prevent the oil stains and dust from affecting the extrusion forming of the aluminum alloy bar, improve the forming quality of the aluminum alloy profile, ensure the stability of the aluminum alloy bar when cutting the aluminum alloy, and have a better cutting effect on the aluminum alloy bar.

[0010] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an anti-loosening and tightening extrusion die, comprising a plurality of multi-segment dies, each of which is provided with a die cavity, and the plurality of multi-segment dies are mounted on a die base through fasteners, and a cutting assembly is connected to the die base;

[0011] The cutting assembly comprises a slotting unit, a cutting unit and a driving unit, the slotting unit comprises a plurality of slotting keys, the plurality of slotting keys are arranged in a circumference and correspond to the mold cavity, the cutting unit comprises a plurality of slotting knives and cutting knives, the slotting knives are arranged obliquely and the plurality of slotting knives are arranged horizontally, the slotting key is arranged on a side of the slotting knives away from the multi-segment mold, and the cutting knives are located on a side of the slotting knives close to the multi-segment mold;

[0012] The driving unit can drive the grooving knife and the cutting knife to move in a circular motion.

[0013] Preferably, the cutting unit further comprises a rotating cylinder, a plurality of the grooving knives are fixedly mounted in the rotating cylinder, the cutting knives are fixedly mounted in the rotating cylinder, and the driving unit can drive the rotating cylinder to rotate.

[0014] Preferably, the cutting assembly also includes a slag discharge shell and a plurality of discharge pieces, the slag discharge shell is fixedly mounted on the mold base, one end of the rotating cylinder is rotatably connected to the slag discharge shell and is rotatably connected to the slag discharge shell, a slag discharge hole is provided at the bottom of the slag discharge shell, a plurality of the discharge pieces are equidistantly fixedly mounted in the rotating cylinder, and the discharge pieces are inclined.

[0015] Preferably, the cutting assembly also includes a guide unit, which includes a fixed plate, a plurality of guide brackets and a plurality of guide wheels. Support rods are fixedly installed at the four corners of the slag shell at one end away from the mold base, the fixed plate is fixedly installed on the support rods, a plurality of guide brackets are fixedly installed on the fixed plate, a plurality of guide wheels are rotatably connected to the corresponding guide brackets, the plurality of guide wheels are arranged in a circle, and guide grooves are provided on the guide wheels.

[0016] Preferably, the slotting unit further comprises a fixing cylinder, wherein the fixing cylinder is fixedly mounted on the fixing plate, and a plurality of slotting keys are fixedly mounted on the inner wall of the fixing cylinder, and one end of the slotting key close to the guide wheel is gradually contracted.

[0017] Preferably, the driving unit includes a driving ring gear, a driving gear, a support frame and a driving motor, the driving ring gear is fixedly mounted on the rotating cylinder, the driving gear is fixedly mounted on the driving motor, the driving gear is meshed with the driving ring gear, the support frame is fixedly mounted on the fixed plate, and the driving motor is fixedly mounted on the support frame.

[0018] Preferably, the fastener includes a fastening screw, a fastening nut and two limiting rings, the two limiting rings are fixedly mounted on the mold base, the limiting rings and the multi-section mold are both provided with through holes, the fastening screw passes through the through holes, and the fastening nut is threadedly connected to the fastening screw.

[0019] Preferably, the die base includes an upper die base and a lower die base, the upper die base and the lower die base are connected by fixing bolts, the limiting ring is fixedly mounted on the lower die base, the lower die base is fixedly mounted with a protective shell, and the slag shell and the fixing plate are both fixedly mounted in the protective shell.

[0020] Preferably, the die base is mounted on an extruder, and a bearing plate is fixedly mounted on one side of the protective shell away from the die base, the bearing plate is arc-shaped, and the other end of the bearing plate is fixedly mounted on the extruder.

[0021] A method for forming an aluminum alloy,

[0022] The heated aluminum alloy bar is moved between a plurality of slotting keys, and the plurality of slotting keys extrude a plurality of horizontal slots on the surface of the aluminum alloy bar;

[0023] The aluminum alloy bar moves through the cutting unit, and the driving unit drives the grooving knife and the cutting knife to rotate. The grooving knife rotates to cut the surface of the aluminum alloy bar. With the movement of the aluminum alloy bar and the rotation of the grooving knife, continuous spiral grooves are cut on the aluminum alloy bar. The cutting knife rotates to cut the surface of the aluminum alloy bar with horizontal grooves and spiral grooves flat.

[0024] The aluminum alloy bar continues to move into the die cavity from one end of the multi-segment die, and is extruded from the other end of the multi-segment die after being formed in the die cavity.

[0025] In summary, the technical effects and advantages of the present invention are as follows: dust and oil stains on the surface of the aluminum alloy bar are cut off, the oil stains and dust are prevented from affecting the extrusion forming of the aluminum alloy bar, the forming quality of the aluminum alloy profile is improved, the stability of the aluminum alloy bar is ensured during the cutting of the aluminum alloy, and the cutting effect of the aluminum alloy bar is better.

[0026] 1. In the present invention, the surface of the aluminum alloy bar is extruded into horizontal grooves arranged in an annular shape by a slotting key, the slotting cutter moves in a circular manner to open a spiral groove on the surface of the aluminum alloy bar, the surface of the aluminum alloy bar forms dot-shaped protrusions through the opened horizontal grooves and spiral grooves, the cutting cutter moves in a circular manner to cut off the dot-shaped protrusions on the surface of the aluminum alloy bar, and the surface of the aluminum alloy bar is cut flat, and a layer of the surface of the aluminum alloy bar can be cut, and dust and oil stains on the surface of the aluminum alloy bar are cut, so as to prevent oil stains and dust from affecting the extrusion molding of the aluminum alloy bar, and improve the molding quality of the aluminum alloy profile;

[0027] 2. In the present invention, the upper die base and the lower die base are connected by fixing bolts, and are connected to the multi-stage die by fastening screws, so as to ensure that the multi-stage die is fastened and not loosened, and facilitate the disassembly and maintenance of the multi-stage die;

[0028] 3. In the present invention, when the grooving knife and the cutting knife move in a circular motion to cut the aluminum alloy bar, the grooving key squeezes the aluminum alloy bar into a horizontal groove, and the grooving key is located in the horizontal groove, which bites the aluminum alloy bar to prevent the aluminum alloy bar from rotating under the cutting force of the grooving knife and the cutting knife, thereby ensuring that the grooving knife and the cutting knife move relative to the aluminum alloy bar, thereby cutting the aluminum alloy bar, and having a better cutting effect on the aluminum alloy bar;

[0029] 4. In the present invention, the grooving knife and the cutting knife cut the aluminum alloy rod, and the cut waste chips fall into the rotating cylinder. The rotating cylinder drives the discharging piece to rotate. The discharging piece is inclined. The discharging piece drives the waste chips in the rotating cylinder to move into the slag discharge shell and is discharged through the slag discharge shell, thereby preventing the accumulation of the cut chips and reducing the difficulty of cleaning. The cut chips will not re-attach to the aluminum alloy rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 It is a schematic diagram of the structure of the protective shell and the extruder in the present invention;

[0032] Figure 2 It is a schematic diagram of the structure of the multi-section mold, the mold base and the extruder in the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the die base, cutting assembly, protective shell and bearing plate in the present invention;

[0034] Figure 4 It is a schematic diagram of the structure of the slotting unit, the cutting unit, the driving unit and the guiding unit in the present invention;

[0035] Figure 5 It is a schematic diagram of the structure of the fixing plate, the guide bracket and the guide wheel in the present invention;

[0036] Figure 6 It is a schematic diagram of the structure of the fixing cylinder, the slotted key, the driving motor, the driving gear and the driving gear ring in the present invention;

[0037] Figure 7 It is a schematic diagram of the structure of the rotating drum and the discharging sheet in the present invention;

[0038] Figure 8 It is a schematic diagram of the structure of the multi-section mold and the slag shell in the present invention;

[0039] Fig. 9 For the present invention Figure 8 A magnified view of part A;

[0040] Fig.10 It is a schematic diagram of the structure of the upper die base, the lower die base, the multi-section die and the fastener in the present invention;

[0041] Fig.11 It is a structural schematic diagram of the lower die base and the multi-section die in the present invention.

[0042] In the figure: 1. multi-section mold; 2. fastener; 21. fastening screw; 22. fastening nut; 23. limiting ring; 3. mold base; 31. upper mold base; 32. lower mold base; 4. cutting assembly; 41. slotting unit; 411. slotting key; 412. fixed cylinder; 42. cutting unit; 421. slotting knife; 422. cutting knife; 423. rotating cylinder; 43. driving unit; 431. driving gear ring; 432. driving gear; 433. supporting frame; 434. driving motor; 44. guiding unit; 441. fixing plate; 442. guiding bracket; 443. guiding wheel; 45. discharging sheet; 46. slag shell; 5. protective shell; 6. extruder; 7. bearing plate. DETAILED DESCRIPTION

[0043] 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.

[0044] Example 1: Reference Figure 1-Figure 11 The illustrated anti-loosening and tightening extrusion die comprises a plurality of multi-segment dies 1, each of which is provided with a die cavity, and the plurality of multi-segment dies 1 are mounted on a die base 3 through fasteners 2, and a cutting assembly 4 is connected to the die base 3;

[0045] The cutting assembly 4 includes a slotting unit 41, a cutting unit 42 and a driving unit 43. The slotting unit 41 includes a plurality of slotting keys 411, which are arranged circumferentially and correspond to the mold cavity. The cutting unit 42 includes a plurality of slotting knives 421 and cutting knives 422. The slotting knives 421 are arranged obliquely and the plurality of slotting knives 421 are arranged horizontally. The slotting key 411 is arranged on a side of the slotting knives 421 away from the multi-segment mold 1, and the cutting knives 422 are located on a side of the slotting knives 421 close to the multi-segment mold 1.

[0046] The driving unit 43 can drive the grooving knife 421 and the cutting knife 422 to move in a circular motion.

[0047] The heated aluminum alloy rod is moved between several slotting keys 411, and several slotting keys 411 extrude multiple horizontal grooves on the surface of the aluminum alloy rod; the aluminum alloy rod moves through the cutting unit 42, and the driving unit 43 drives the slotting knife 421 and the cutting knife 422 to rotate, and the slotting knife 421 moves in a circle to cut the surface of the aluminum alloy rod. With the movement of the aluminum alloy rod and the circular movement of the slotting knife 421, continuous spiral grooves are cut on the aluminum alloy rod, and the cutting knife 422 moves in a circle to cut the surface of the aluminum alloy rod with horizontal grooves and spiral grooves flat; the aluminum alloy rod continues to move and enters the mold cavity from one end of the multi-segment mold 1, and is extruded from the other end of the multi-segment mold 1 after being formed in the mold cavity.

[0048] The surface of the aluminum alloy rod is extruded into horizontal grooves arranged in a ring shape by the slotting key 411, and the slotting knife 421 moves in a circle to open spiral grooves on the surface of the aluminum alloy rod. The surface of the aluminum alloy rod forms dot-shaped protrusions through the opened horizontal grooves and spiral grooves. The cutting knife 422 moves in a circle to cut off the dot-shaped protrusions on the surface of the aluminum alloy rod and cuts the surface of the aluminum alloy rod smooth. It can cut a layer of the surface of the aluminum alloy rod and cut off the dust and oil stains on the surface of the aluminum alloy rod, thereby preventing the oil stains and dust from affecting the extrusion forming of the aluminum alloy rod and improving the forming quality of the aluminum alloy profile.

[0049] When the grooving knife 421 and the cutting knife 422 move in a circle to cut the aluminum alloy rod, the grooving key 411 squeezes the aluminum alloy rod into a horizontal groove. The grooving key 411 is located in the horizontal groove and bites the aluminum alloy rod to prevent the aluminum alloy rod from rotating under the cutting force of the grooving knife 421 and the cutting knife 422, thereby ensuring relative movement between the grooving knife 421 and the cutting knife 422 and the aluminum alloy rod, thereby cutting the aluminum alloy rod and achieving a better cutting effect on the aluminum alloy rod.

[0050] A horizontal groove is first squeezed out of the surface of the aluminum alloy rod by a slotting key 411, and then a spiral groove is opened on the surface of the aluminum alloy rod by a slotting knife 421. The horizontal groove and the spiral groove form convex points on the surface of the aluminum alloy rod, and then the surface of the aluminum alloy rod is cut flat by a cutting knife 422. When the cutting knife 422 cuts the surface of the aluminum alloy rod, the surface of the aluminum alloy rod is convex at multiple points, the cutting surface is reduced, and the pressure between the cutting knife 422 and the aluminum alloy rod is reduced, so that the wear of the cutting knife 422 is reduced, the service life of the cutting knife 422 is increased, and the cutting effect of the cutting knife 422 on the surface of the aluminum alloy rod is improved.

[0051] The cutting depth of the aluminum alloy bar by the cutting blade 422 is greater than the depth of the extruded groove of the aluminum alloy bar by the slotting key 411, which prevents dust and oil from remaining in the horizontal groove extruded by the slotting key 411.

[0052] The hardness of the aluminum alloy rod is reduced after heating, and the cutting depth of the aluminum alloy rod is small. The aluminum alloy rod is first grooved horizontally by the groove key 411, and the groove cutting knife 421 is used to cut a spiral groove in the aluminum alloy rod. Then, the aluminum alloy rod is cut by the cutting knife 422, so that the pressure on the cutting knife 422 is smaller, so that the cutting knife 422 does not need cutting fluid and will not be damaged by overheating.

[0053] Example 2, reference Figure 1-Figure 11 , which is different from the above-mentioned embodiment, the cutting unit 42 further includes a rotating cylinder 423, a plurality of grooving knives 421 are fixedly installed in the rotating cylinder 423, the cutting knives 422 are fixedly installed in the rotating cylinder 423, and the driving unit 43 can drive the rotating cylinder 423 to rotate.

[0054] The driving unit 43 drives the rotating cylinder 423 to rotate, and the rotating cylinder 423 drives the grooving knife 421 and the cutting knife 422 to move in a circle. Because the grooving knife 421 is set at an angle, along with the circumferential movement of the grooving knife 421 and the movement of the aluminum alloy rod, the grooving knife 421 cuts a continuous spiral groove on the surface of the aluminum alloy rod, and the cutting knife 422 moves in a circle to cut the surface of the aluminum alloy rod flat.

[0055] The grooving knife 421 and the cutting knife 422 are fixedly mounted on the rotating cylinder 423 via a spacer, so that there is a certain gap between the rotating cylinder 423 and the aluminum alloy bar, so that the debris can be discharged through the gap.

[0056] Example 3, reference Figure 1-Figure 11 , which is different from the above-mentioned embodiment, the cutting assembly 4 further includes a slag discharge shell 46 and a plurality of discharge pieces 45, the slag discharge shell 46 is fixedly mounted on the die base 3, one end of the rotating cylinder 423 is rotatably connected to the slag discharge shell 46 and is rotatably connected to the slag discharge shell 46, a slag discharge hole is opened at the bottom of the slag discharge shell 46, a plurality of discharge pieces 45 are equidistantly fixedly mounted in the rotating cylinder 423, and the discharge pieces 45 are inclined.

[0057] The grooving knife 421 and the cutting knife 422 cut the aluminum alloy rod, and the cut waste chips fall into the rotating cylinder 423. The rotating cylinder 423 drives the discharging piece 45 to rotate. The discharging piece 45 is inclined. The discharging piece 45 drives the waste chips in the rotating cylinder 423 to move into the slag discharge shell 46 and discharge them through the slag discharge shell 46, thereby preventing the accumulation of cut chips and reducing the difficulty of cleaning. The cut chips will not re-attach to the aluminum alloy rod.

[0058] Example 4, reference Figure 1-Figure 11 , which is different from the above-mentioned embodiment, the cutting assembly 4 also includes a guiding unit 44, which includes a fixing plate 441, a plurality of guiding brackets 442 and a plurality of guiding wheels 443, and supporting rods are fixedly installed at the four corners of the end of the slag shell 46 away from the die base 3, the fixing plate 441 is fixedly installed on the supporting rods, a plurality of guiding brackets 442 are fixedly installed on the fixing plate 441, a plurality of guiding wheels 443 are rotatably connected to the corresponding guiding brackets 442, the plurality of guiding wheels 443 are arranged in a circle, and guiding grooves are provided on the guiding wheels 443.

[0059] The aluminum alloy bar moves between the multiple guide wheels 443, and the multiple guide wheels 443 limit the aluminum alloy bar so that the aluminum alloy bar can accurately enter between the multiple slotting keys 411, prevent the aluminum alloy bar from being displaced by force, and ensure that the slotting depth of the multiple slotting keys 411 on the surface of the aluminum alloy bar is consistent.

[0060] Example 5, reference Figure 1-Figure 11 The difference from the above embodiment is that the slotting unit 41 also includes a fixed cylinder 412, which is fixedly mounted on a fixed plate 441, and a plurality of slotting keys 411 are fixedly mounted on the inner wall of the fixed cylinder 412, and one end of the slotting key 411 close to the guide wheel 443 is gradually contracted.

[0061] The fixing plate 441 fixes the fixing cylinder 412, and the fixing cylinder 412 fixes the slotted key 411, so that the slotted key 411 has a stronger torque bearing capacity. One end of the slotted key 411 is gradually contracted, which can extrude a horizontal groove on the surface of the aluminum alloy. The force between the slotted key 411 and the aluminum alloy surface is lower than that of the cutting method, and it is easier to extrude and slot the surface of the aluminum alloy bar.

[0062] Example 6, reference Figure 1-Figure 11 , which is different from the above-mentioned embodiment, is that the driving unit 43 includes a driving ring gear 431, a driving gear 432, a support frame 433 and a driving motor 434, the driving ring gear 431 is fixedly mounted on the rotating cylinder 423, the driving gear 432 is fixedly mounted on the driving motor 434, the driving gear 432 is meshed with the driving ring gear 431, the support frame 433 is fixedly mounted on the fixing plate 441, and the driving motor 434 is fixedly mounted on the support frame 433.

[0063] The driving motor 434 drives the driving gear 432 to rotate, the driving gear 432 drives the driving ring gear 431 to rotate, the driving ring gear 431 drives the rotating cylinder 423 to rotate, and the rotating cylinder 423 drives the grooving knife 421 and the cutting knife 422 to move in a circle. With the circumferential movement of the grooving knife 421 and the movement of the aluminum alloy rod, the grooving knife 421 cuts a continuous spiral groove on the surface of the aluminum alloy rod, and the cutting knife 422 moves in a circle to cut the surface of the aluminum alloy rod flat.

[0064] Example 7, reference Figure 1-Figure 11 The difference from the above-mentioned embodiment is that the fastener 2 includes a fastening screw 21, a fastening nut 22 and two limiting rings 23. The two limiting rings 23 are fixedly mounted on the mold base 3. The limiting rings 23 and the multi-section mold 1 are both provided with through holes. The fastening screw 21 passes through the through holes, and the fastening nut 22 is threadedly connected to the fastening screw 21.

[0065] Different mold cavities are opened in the multi-stage mold 1 to form the aluminum alloy rod into an aluminum profile. This is the prior art. The multi-stage mold 1 is installed on the mold base 3 through a fastening screw 21.

[0066] Example 8, reference Figure 1-Figure 11 The difference from the above embodiment is that the die base 3 includes an upper die base 31 and a lower die base 32, the upper die base 31 and the lower die base 32 are connected by fixing bolts, the limiting ring 23 is fixedly installed on the lower die base 32, the lower die base 32 is fixedly installed with a protective shell 5, and the slag shell 46 and the fixing plate 441 are both fixedly installed in the protective shell 5.

[0067] The upper die base 31 and the lower die base 32 are connected by fixing bolts, and are connected to the multi-section die 1 by means of the fastening screw 21 , so as to ensure that the multi-section die 1 is fastened and not loosened, and facilitate the disassembly and maintenance of the multi-section die 1 .

[0068] Example 9, reference Figure 1-Figure 11 The difference from the above embodiment is that the die base 3 is installed on the extruder 6, and a supporting plate 7 is fixedly installed on the side of the protective shell 5 away from the die base 3. The supporting plate 7 is arc-shaped, and the other end of the supporting plate 7 is fixedly installed on the extruder 6.

[0069] The heated aluminum alloy rod is placed on a carrier plate 7, and an extruder 6 pushes the aluminum alloy rod into a multi-stage die 1 for extrusion molding. The extruder 6 is a prior art and will not be described in detail herein.

[0070] A method for forming an aluminum alloy,

[0071] The heated aluminum alloy bar is moved between the plurality of slotted keys 411, and the plurality of slotted keys 411 extrude a plurality of horizontal slots on the surface of the aluminum alloy bar;

[0072] The aluminum alloy bar moves through the cutting unit 42, and the driving unit 43 drives the grooving knife 421 and the cutting knife 422 to rotate. The grooving knife 421 rotates to cut the surface of the aluminum alloy bar. With the movement of the aluminum alloy bar and the rotation of the grooving knife 421, a continuous spiral groove is cut on the aluminum alloy bar. The cutting knife 422 rotates to cut the surface of the aluminum alloy bar with horizontal grooves and spiral grooves to be smooth.

[0073] The aluminum alloy bar continues to move and enters the die cavity from one end of the multi-segment die 1 , and is extruded from the other end of the multi-segment die 1 after being formed in the die cavity.

[0074] The method of using the present invention is as follows: the heated aluminum alloy bar is placed on the carrier plate 7, the extruder 6 pushes the aluminum alloy bar to move, the aluminum alloy bar moves into between the multiple guide wheels 443, the aluminum alloy bar moves between the multiple guide wheels 443, the multiple guide wheels 443 limit the aluminum alloy bar so that the aluminum alloy bar can accurately enter between the multiple slotting keys 411, the multiple slotting keys 411 extrude multiple horizontal grooves on the surface of the aluminum alloy bar, the aluminum alloy bar continues to move, the driving motor 434 drives the driving gear 432 to rotate, the driving gear 432 drives the driving gear ring 431 to rotate, the driving gear ring 431 drives the rotating cylinder 423 to rotate, and the rotating cylinder 423 drives the grooving knife 421 and the cutting knife 422 move in a circle. Since the grooving knife 421 is set at an angle, along with the circumferential movement of the grooving knife 421 and the movement of the aluminum alloy rod, the grooving knife 421 cuts a continuous spiral groove on the surface of the aluminum alloy rod. The cutting knife 422 moves in a circle to cut the surface of the aluminum alloy rod flat. The cut waste chips fall into the rotating cylinder 423. The rotating cylinder 423 drives the discharging piece 45 to rotate. The discharging piece 45 is set at an angle. The discharging piece 45 drives the waste chips in the rotating cylinder 423 to move into the slag discharge shell 46 and discharge them through the slag discharge shell 46. The aluminum alloy rod continues to move from one end of the multi-segment mold 1 into the mold cavity, and is extruded from the other end of the multi-segment mold 1 after being formed in the mold cavity.

[0075] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-loosening and tightening extrusion die, comprising a plurality of multi-segment dies (1), characterized in that: A plurality of multi-segment molds (1) are each provided with a mold cavity. The plurality of multi-segment molds (1) are mounted on a mold base (3) via fasteners (2), and a cutting assembly (4) is connected to the mold base (3); The cutting assembly (4) comprises a slotting unit (41), a cutting unit (42) and a driving unit (43); the slotting unit (41) comprises a plurality of slotting keys (411), the plurality of slotting keys (411) are arranged in a circumferential manner and correspond to the mold cavity; the cutting unit (42) comprises a plurality of slotting knives (421) and cutting knives (422); the slotting knives (421) are arranged obliquely and the plurality of slotting knives (421) are arranged horizontally; the slotting key (411) is arranged on a side of the slotting knife (421) away from the multi-segment mold (1), and the cutting knife (422) is located on a side of the slotting knife (421) close to the multi-segment mold (1); The driving unit (43) is capable of driving the grooving knife (421) and the cutting knife (422) to move in a circular motion; The cutting unit (42) further comprises a rotating cylinder (423), a plurality of the grooving knives (421) are fixedly mounted in the rotating cylinder (423), the cutting knife (422) is fixedly mounted in the rotating cylinder (423), and the driving unit (43) is capable of driving the rotating cylinder (423) to rotate; The cutting assembly (4) further comprises a slag discharge shell (46) and a plurality of discharge pieces (45), the slag discharge shell (46) being fixedly mounted on the die base (3), one end of the rotating cylinder (423) being rotatably connected to the slag discharge shell (46) and being rotatably connected to the slag discharge shell (46), a slag discharge hole being provided at the bottom of the slag discharge shell (46), a plurality of discharge pieces (45) being equidistantly fixedly mounted in the rotating cylinder (423), and the discharge pieces (45) being arranged in an inclined manner; The cutting assembly (4) further comprises a guide unit (44), the guide unit (44) comprising a fixed plate (441), a plurality of guide brackets (442) and a plurality of guide wheels (443); support rods are fixedly mounted at four corners of one end of the slag shell (46) away from the die base (3); the fixed plate (441) is fixedly mounted on the support rods; a plurality of guide brackets (442) are fixedly mounted on the fixed plate (441); a plurality of guide wheels (443) are rotatably connected to corresponding guide brackets (442); the plurality of guide wheels (443) are arranged in a circle; and a guide groove is provided on the guide wheel (443); The slotting unit (41) further comprises a fixing cylinder (412), wherein the fixing cylinder (412) is fixedly mounted on the fixing plate (441), and a plurality of slotting keys (411) are fixedly mounted on the inner wall of the fixing cylinder (412), and one end of the slotting key (411) close to the guide wheel (443) is gradually contracted.

2. The anti-loosening and tightening extrusion die according to claim 1, characterized in that: The driving unit (43) comprises a driving ring gear (431), a driving gear (432), a support frame (433) and a driving motor (434); the driving ring gear (431) is fixedly mounted on the rotating cylinder (423); the driving gear (432) is fixedly mounted on the driving motor (434); the driving gear (432) is meshed with the driving ring gear (431); the support frame (433) is fixedly mounted on the fixing plate (441); and the driving motor (434) is fixedly mounted on the support frame (433).

3. The anti-loosening and tightening extrusion die according to claim 2, characterized in that: The fastener (2) comprises a fastening screw (21), a fastening nut (22) and two limiting rings (23); the two limiting rings (23) are fixedly mounted on the mold base (3); the limiting rings (23) and the multi-section mold (1) are both provided with through holes; the fastening screw (21) passes through the through holes; and the fastening nut (22) is threadedly connected to the fastening screw (21).

4. The anti-loosening and tightening extrusion die according to claim 3, characterized in that: The die base (3) comprises an upper die base (31) and a lower die base (32); the upper die base (31) and the lower die base (32) are connected by fixing bolts; the limit ring (23) is fixedly mounted on the lower die base (32); a protective shell (5) is fixedly mounted on the lower die base (32); and the slag shell (46) and the fixing plate (441) are both fixedly mounted in the protective shell (5).

5. The anti-loosening and tightening extrusion die according to claim 4, characterized in that: The die base (3) is mounted on an extruder (6); a bearing plate (7) is fixedly mounted on a side of the protective shell (5) away from the die base (3); the bearing plate (7) is arranged in an arc shape; and the other end of the bearing plate (7) is fixedly mounted on the extruder (6).

6. A method for forming an aluminum alloy, using the anti-loosening and tightening extrusion die as claimed in any one of claims 1 to 5, characterized in that: The heated aluminum alloy bar is moved between a plurality of slotting keys (411), and the plurality of slotting keys (411) extrude a plurality of horizontal slots on the surface of the aluminum alloy bar; The aluminum alloy bar moves through the cutting unit (42), the driving unit (43) drives the grooving knife (421) and the cutting knife (422) to rotate, the grooving knife (421) rotates to cut the surface of the aluminum alloy bar, and as the aluminum alloy bar moves and the grooving knife (421) rotates, a continuous spiral groove is cut on the aluminum alloy bar, and the cutting knife (422) rotates to cut the surface of the aluminum alloy bar with the horizontal groove and the spiral groove flat; The aluminum alloy bar continues to move and enters the die cavity from one end of the multi-segment die (1), and is formed in the die cavity before being extruded from the other end of the multi-segment die (1).

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