Extruding machine for aluminum profile

Abstract

The invention discloses an extruding machine for aluminum profiles, which belongs to the technical field of extruding machines and comprises an extruding machine body, and a die module, an extruding module and a hydraulic safety module are arranged on a station table; the mold module comprises an installation mold base arranged on the station table, and a discharging mold used for aluminum profile forming is detachably installed on the installation mold base. The extrusion module comprises a foundation seat mounted behind the mounting die holder, an extrusion die holder is arranged on the foundation seat, and an extrusion template is arranged at the end part of the extrusion die holder. In the aluminum blank transfer stage, the extrusion inner mold core is continuously heated through the electromagnetic induction technology of the heating coil, so that the mold temperature is consistent with the aluminum blank temperature; when an aluminum blank enters the extrusion cylinder, the electric push rod drives the heating coil to move to the preheating channel from the constant-temperature annular opening, the aluminum blank is subjected to compensation heating through constant-speed movement, the problem of temperature drop in the transferring process is solved, mechanical locking is conducted on the pressure induction type hydraulic column through the multiple clamping pieces, pressure stability in the shutdown stage is maintained, and extrusion continuity is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of extruders, in particular to an extruder for aluminum profiles. Background Art

[0002] Aluminum extruder is a key equipment used to extrude aluminum billets or aluminum bars into profiles of required cross-sectional shapes through dies. Its main process is as follows: aluminum billets are heated, fed into the extrusion cylinder, the extrusion rods are pressurized, aluminum is formed through dies, cooled, straightened and cut to achieve the processing of aluminum profiles; The current processing method requires that the aluminum billet be heated in a heating furnace and then divided and sent to the extrusion barrel. During this process, the surface temperature of the aluminum billet will drop, and the thermoplasticity of the aluminum billet after the drop will be reduced in the mold. The temperature difference between the surface and the interior will affect the forming quality of the aluminum profile. During the transfer process, the mold itself will also cause the temperature to drop due to heat dissipation, which will also affect the forming of the aluminum profile. The profile crystal phase is uneven due to temperature fluctuations; furthermore, when the material unit length of the aluminum profile is less, the aluminum profiles formed from the same piece of aluminum billet will have different lengths. For aluminum profiles with longer forming lengths, they are often limited by the length of the production line. The hydraulic device needs to stop during the extrusion process and wait for it to be cut before starting. The hydraulically driven device has limited voltage stabilization effect at this time, which can easily cause the aluminum profile to be interrupted during pressure, and the aluminum profile forming is discontinuous and defects appear. Based on this, an extruder for aluminum profiles is proposed. Summary of the invention

[0003] The purpose of the present invention is to solve the problems existing in the prior art and to propose an extruder for aluminum profiles.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: An extruder for aluminum profiles, comprising an extruder body, the extruder body comprising a workstation and a hydraulic device arranged on the workstation, the workstation being provided with a die module, an extrusion module and a hydraulic insurance module; The mold module comprises a mounting mold base arranged on a workstation table, and the mounting mold base is detachably mounted with a discharge mold for aluminum profile molding; The extrusion module comprises a base seat installed behind the mounting die seat, an extrusion die seat is arranged on the base seat, an extrusion die seat is arranged at the end of the extrusion die seat, an extrusion inner die core is arranged in the extrusion die plate, the extrusion die plate is connected to a heating coil for heating the extrusion inner die core through a control component, an extrusion cylinder is arranged in the extrusion die seat, and a preheating channel for the heating coil to move is arranged around the extrusion cylinder; The hydraulic safety module includes a locking support plate connected to the workstation, the locking support plate is connected to a plurality of clamping members through a plurality of slide slot connectors, an eccentric rotating plate is rotatably arranged on the locking support plate, and the eccentric rotating plate is connected to the clamping members through an eccentric shaft.

[0005] Preferably, a constant temperature annular opening is provided on the extrusion template located at the periphery of the extrusion inner mold core, the constant temperature annular opening is adapted to the preheating channel, and the heating coil is switched in position in the constant temperature annular opening and the preheating channel through a control component.

[0006] Preferably, the control component includes an electric push rod arranged on the extrusion template, the output end of the electric push rod is connected to a transverse rod through a vertical rod, the transverse rod is connected to a heating coil located in a constant temperature annular mouth, and a rectangular moving opening for the vertical rod to move is opened on the extrusion die base.

[0007] Preferably, a locking motor is provided in the work station, a one-way transmission worm is connected to the output end of the locking motor, and an outer worm wheel ring meshing with the one-way transmission worm is fixedly connected to the outer side wall of the eccentric rotating disk.

[0008] Preferably, the slide groove connecting member comprises a limiting slide seat arranged on the locking support plate, the limiting slide seat is provided with a slide groove, and the clamping member is provided with a sliding connection block located in the slide groove.

[0009] Preferably, the clamping member is composed of a clamping arm and a clamping wheel, the clamping arm is connected to the limiting slide seat through a sliding connection block, and the eccentric shaft is eccentrically arranged on both sides of the clamping wheel and is rotationally connected to the eccentric rotating disk.

[0010] Preferably, the output end of the hydraulic device is connected to a pressure-sensitive hydraulic column, and the plurality of clamping members realize the movement limitation of the pressure-sensitive hydraulic column. The outer wall of the pressure-sensitive hydraulic column and the outer wall of the clamping wheel are both provided with a serrated layer, and the serrated layer is used to increase the friction force when the pressure-sensitive hydraulic column contacts the clamping wheel.

[0011] Preferably, a pressure sensing seat is provided between the output end of the hydraulic device and the pressure-sensitive hydraulic column, and the pressure sensing seat can measure the pressure applied by the hydraulic device to the pressure-sensitive hydraulic column.

[0012] Preferably, temperature sensors for measuring temperature are provided in the constant temperature annular opening and the preheating channel.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the aluminum billet transfer stage, the present invention continuously heats the extrusion inner mold core through the electromagnetic induction technology of the heating coil, so that the mold temperature is consistent with the aluminum billet temperature; when the aluminum billet enters the extrusion barrel, the electric push rod drives the heating coil to move from the constant temperature annular mouth to the preheating channel, and compensates the aluminum billet by moving at a uniform speed, thereby solving the temperature drop problem during the transfer process.

[0014] 2. The present invention designs a hydraulic safety module to start the locking motor at the moment the hydraulic device stops, and drives the eccentric rotating disk through the one-way transmission worm and the outer worm ring; uses multiple clamping parts to mechanically lock the pressure-sensitive hydraulic column to maintain pressure stability during the shutdown stage and ensure extrusion continuity.

[0015] 3. The present invention realizes closed-loop temperature control of aluminum billet cutting, transfer, preheating and extrusion; ensures the profile forming quality through the coordinated control of electromagnetic heating and mechanical locking; significantly reduces the temperature drop loss of the traditional extrusion process through the thermal-mechanical coupling control strategy, and effectively solves the problem of uneven crystal phase of the profile caused by temperature fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of an aluminum profile extruder proposed by the present invention; Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 3 This is a schematic diagram of the assembly structure of a die module and an extrusion module in an aluminum profile extruder proposed by the present invention; Figure 4 This is a schematic cross-sectional structure diagram of a die module and an extrusion module in an aluminum profile extruder proposed by the present invention; Figure 5 This is a structural schematic diagram of a hydraulic safety module in an aluminum profile extruder proposed by the present invention; Figure 6 This is a three-dimensional structural schematic diagram of a locking support disk, a clamping member and an eccentric rotating disk in an aluminum profile extruder proposed by the present invention; Figure 7 The present invention is a schematic diagram of the assembly structure of a locking support disk, a clamping member and an eccentric rotating disk in an aluminum profile extruder proposed by the present invention.

[0017] In the figure: 1. Work station; 2. Hydraulic device; 3. Mounting die base; 4. Discharging die; 5. Base base; 6. Extrusion die base; 7. Extrusion template; 8. Extrusion inner mold core; 9. Heating coil; 10. Extrusion cylinder; 11. Preheating channel; 12. Locking support plate; 13. Clamping piece; 14. Eccentric rotating plate; 15. Eccentric shaft; 16. Pressure-sensitive hydraulic column; 17. Electric push rod; 18. Transverse rod; 19. Rectangular moving mouth; 20. Locking motor; 21. One-way transmission worm; 22. Outer worm wheel ring; 23. Limiting slide seat; 24. Sliding connection block; 25. Pressure sensing seat; 26. Constant temperature annular mouth. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Example, see Figures 1 to 7 , an aluminum profile extruder, comprising an extruder body, the extruder body comprising a workstation 1 and a hydraulic device 2, the workstation 1 being provided with a die module, an extrusion module and a hydraulic insurance module; The mold module comprises a mounting mold base 3 arranged on the workstation table 1, and the mounting mold base 3 is detachably mounted with a discharge mold 4 for aluminum profile molding; The extrusion module includes a base 5 installed behind the mounting die base 3, an extrusion die base 6 is arranged on the base 5, an extrusion die plate 7 is arranged at the end of the extrusion die base 6, a constant temperature annular opening 26 is opened on the extrusion die plate 7 located outside the extrusion inner die core 8, the constant temperature annular opening 26 is adapted to the preheating channel 11, and the heating coil 9 is switched in position in the constant temperature annular opening 26 and the preheating channel 11 through the control component; Among them, the extrusion template 7 is located on one side of the discharge die 4, and it fits tightly with the discharge die 4. The function of the extrusion template 7 is to bear the pressure generated by the aluminum billet and extrude aluminum material to provide aluminum material of suitable size to the discharge die 4.

[0021] An extrusion inner mold core 8 is arranged in the extrusion template 7, and the extrusion template 7 is connected to a heating coil 9 for heating the extrusion inner mold core 8 through a control component; It should be noted that the heating coil 9 is an electromagnetic heating coil, which is a device that uses the principle of electromagnetic induction for heating. The working principle is based on the alternating current passing through the coil to generate an alternating magnetic field, and then induce eddy currents in the metal object, so that the metal itself heats up to achieve the heating effect. In this scheme, it has two effects. First, during the insulation process (the process of loading the aluminum billet), the heating coil 9 is in the constant temperature annular mouth 26, which can heat the extrusion inner mold core 8 in the extrusion template 7 to achieve the insulation effect. Second, when the aluminum billet is loaded into the extrusion barrel 10, the heating coil 9 is driven by the electric push rod 17 to move, and the aluminum billet in the extrusion barrel 10 is heated to increase its temperature and ensure the quality of its aluminum profile forming.

[0022] The control component includes an electric push rod 17 arranged on the extrusion template 7. The output end of the electric push rod 17 is connected to a transverse rod 18 through a vertical rod. The transverse rod 18 is connected to the heating coil 9 located in the constant temperature annular opening 26. A rectangular moving opening 19 for the vertical rod to move is opened on the extrusion die base 6. The electric push rod 17 is controlled to achieve the effect of uniform movement of the heating coil 9 in the constant temperature annular opening 26.

[0023] An extrusion barrel 10 is provided in the extrusion die base 6, and a preheating channel 11 is provided around the extrusion barrel 10 for the heating coil 9 to move; Temperature sensors for measuring temperature are provided in the constant temperature annular opening 26 and the preheating channel 11 . The temperature sensors can be used to obtain the temperature changes of the extrusion inner mold core 8 in the constant temperature annular opening 26 and the aluminum billet in the preheating channel 11 .

[0024] The hydraulic safety module includes a locking support plate 12 connected to the workstation 1, and the locking support plate 12 is connected to a plurality of clamping members 13 through a slide groove connecting member. Further, the slide groove connecting member includes a limit slide 23 arranged on the locking support plate 12, and a slide groove is provided on the limit slide 23, and a sliding connection block 24 located in the slide groove is provided on the clamping member 13; It should be noted that during the clamping process of the clamping member 13, one end of its clamping arm needs to slide and move. At this time, the sliding connection between the sliding connection block 24 and the slide groove can ensure that one end of the clamping member 13 can move, and ensure that the clamping wheel at one end of the clamping member 13 can apply a tightening force to the pressure-sensing hydraulic column 16.

[0025] The clamping member 13 is composed of a clamping arm and a clamping wheel. The clamping arm is connected to the limit slide 23 through a sliding connection block 24. The eccentric shaft 15 is eccentrically arranged on both sides of the clamping wheel and is rotatably connected to the eccentric rotating disk 14. The locking support disk 12 is rotatably provided with an eccentric rotating disk 14, and the eccentric rotating disk 14 is connected to the clamping member 13 through the eccentric shaft 15. When the eccentric rotating disk 14 rotates, the clamping member 13 adopts the above design, and the eccentric shaft 15 causes the clamping member 13 to generate a deflection force. Under the action of the deflection force, it can ensure that a clamping force is generated on the pressure-sensitive hydraulic column 16 that applies pressure in the middle, thereby locking the moving distance of the pressure-sensitive hydraulic column 16. It can ensure that when the hydraulic pressure stops, the pressure-sensitive hydraulic column 16 will not be displaced, thereby ensuring the continuity of the aluminum profile forming and avoiding the occurrence of aluminum profile forming material defects when the hydraulic device 2 fails.

[0026] Furthermore, a locking motor 20 is provided in the work station 1, and a one-way transmission worm 21 is connected to the output end of the locking motor 20. The outer wall of the eccentric rotating disk 14 is fixedly connected to an outer worm wheel ring 22 meshing with the one-way transmission worm 21. The one-way transmission between the one-way transmission worm 21 and the outer worm wheel ring 22 in this scheme can be ensured through the structural locking between the worm and the worm wheel to ensure the force effect on the clamping member 13.

[0027] The output end of the hydraulic device 2 is connected to a pressure-sensitive hydraulic column 16, and a pressure-sensitive seat 25 is provided between the output end of the hydraulic device 2 and the pressure-sensitive hydraulic column 16. The pressure-sensitive seat 25 can measure the pressure applied by the hydraulic device 2 to the pressure-sensitive hydraulic column 16. When the pressure-sensitive seat 25 detects sufficient pressure, the clamping effect of the clamping member 13 on the pressure-sensitive hydraulic column 16 will be released, thereby ensuring the continuous pressure of the hydraulic device 2 on the aluminum billet; A plurality of clamping members 13 are used to limit the movement of the pressure-sensitive hydraulic column 16. The outer wall of the pressure-sensitive hydraulic column 16 and the outer wall of the clamping wheel are both provided with a serrated layer, which is used to increase the friction force when the pressure-sensitive hydraulic column 16 contacts the clamping wheel.

[0028] When the extruder proposed in the present invention processes aluminum profiles, after one aluminum billet is extruded into a material, the tail of the aluminum billet needs to be cut off, and the next aluminum billet is taken out of the heating furnace, and the aluminum billet is moved into the extrusion cylinder 10 through the transfer setting. During this process, in order to ensure that the temperature of the extrusion inner mold core 8 does not decrease, the heating coil 9 is turned on to heat the extrusion inner mold core 8 in the extrusion template 7 by electromagnetic induction, so as to ensure that its temperature is consistent with the temperature of the aluminum billet, so as to meet the requirements of subsequent aluminum billet extrusion molding; Furthermore, when the aluminum billet is conveyed into the extrusion barrel 10, the temperature of the aluminum billet will decrease during the transfer process. At this time, when the aluminum billet is in the extrusion barrel 10, the electric push rod 17 drives the heating coil 9 to move, so that the heating coil 9 originally in the constant temperature annular opening 26 moves into the preheating channel 11 and moves at a constant speed, thereby heating the aluminum billet in the extrusion barrel 10, increasing the temperature of the aluminum billet and ensuring the quality of its aluminum profile forming; When the aluminum profile needs to be stopped for cutting during forming, at the moment the hydraulic device 2 stops, the locking motor 20 is controlled to start, so that the one-way transmission worm 21 connected to its output end can drive the outer worm ring 22 to rotate, thereby driving the eccentric rotating disk 14 to drive the clamping member 13, and locking the pressure-sensitive hydraulic column 16 in the middle through multiple clamping members 13 to ensure that the pressure-sensitive hydraulic column 16 is in a stationary state during the stopping stage, so as to meet the effect of continuous extrusion and discharge, and ensure the final aluminum profile forming quality.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An extruder for aluminum profiles, comprising an extruder body, characterized in that: The extruder body comprises a work station (1) and a hydraulic device (2); the work station (1) is provided with a die module, an extrusion module and a hydraulic safety module; The mold module comprises a mounting mold base (3) arranged on a workstation table (1), and a discharge mold (4) for aluminum profile molding is detachably mounted on the mounting mold base (3); The extrusion module comprises a base (5) mounted behind a mounting die base (3), an extrusion die base (6) being arranged on the base (5), an extrusion die base (6) being arranged at the end of the extrusion die base (6), an extrusion die plate (7) being arranged inside the extrusion die plate (7), a heating coil (9) for heating the extrusion die core (8) being connected to the extrusion die plate (7) through a control component, an extrusion barrel (10) being arranged inside the extrusion die base (6), and preheating channels (11) for movement of the heating coil (9) being arranged around the extrusion barrel (10); The hydraulic safety module comprises a locking support plate (12) connected to the workstation (1), the locking support plate (12) being connected to a plurality of clamping members (13) via a slide connection member, an eccentric rotating plate (14) being rotatably arranged on the locking support plate (12), and the eccentric rotating plate (14) being connected to the clamping members (13) via an eccentric shaft (15).

2. The aluminum profile extruder according to claim 1, characterized in that: A constant temperature annular opening (26) is provided on the extrusion die plate (7) located outside the extrusion inner die core (8); the constant temperature annular opening (26) is compatible with the preheating channel (11); and the heating coil (9) switches its position in the constant temperature annular opening (26) and the preheating channel (11) through a control component.

3. The aluminum profile extruder according to claim 2, characterized in that: The control assembly comprises an electric push rod (17) arranged on an extrusion die plate (7); an output end of the electric push rod (17) is connected to a transverse rod (18) via a vertical rod; the transverse rod (18) is connected to a heating coil (9) located in a constant temperature annular opening (26); and a rectangular moving opening (19) for the vertical rod to move is provided on the extrusion die base (6).

4. The aluminum profile extruder according to claim 3, characterized in that: A locking motor (20) is arranged in the workstation (1), the output end of the locking motor (20) is connected to a one-way transmission worm (21), and the outer side wall of the eccentric rotating disk (14) is fixedly connected to an outer worm wheel ring (22) meshingly connected to the one-way transmission worm (21).

5. The aluminum profile extruder according to claim 4, characterized in that: The slide groove connecting member comprises a limiting slide seat (23) arranged on the locking support plate (12), a slide groove is provided on the limiting slide seat (23), and a sliding connection block (24) located in the slide groove is provided on the clamping member (13).

6. The aluminum profile extruder according to claim 5, characterized in that: The clamping member (13) is composed of a clamping arm and a clamping wheel. The clamping arm is connected to the limiting slide seat (23) via a sliding connection block (24). The eccentric shaft (15) is eccentrically arranged on both sides of the clamping wheel and is rotationally connected to the eccentric rotating disk (14).

7. The aluminum profile extruder according to claim 6, characterized in that: The output end of the hydraulic device (2) is connected to a pressure-sensitive hydraulic column (16), and the plurality of clamping members (13) are used to limit the movement of the pressure-sensitive hydraulic column (16); The outer wall of the pressure-sensitive hydraulic column (16) and the outer wall of the clamping wheel are both provided with a serrated tooth layer, and the serrated tooth layer is used to increase the friction force when the pressure-sensitive hydraulic column (16) and the clamping wheel are in contact.

8. The aluminum profile extruder according to claim 1, characterized in that: A pressure sensing seat (25) is provided between the output end of the hydraulic device (2) and the pressure sensing hydraulic column (16), and the pressure sensing seat (25) can measure the magnitude of the pressure applied by the hydraulic device (2) to the pressure sensing hydraulic column (16).

9. The aluminum profile extruder according to claim 2, characterized in that: Temperature sensors for measuring temperature are provided in the constant temperature annular opening (26) and the preheating channel (11).

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