Composite aluminum pipe double-end spinning machine and using method thereof

Abstract

The invention discloses a composite aluminum pipe double-end spinning machine and a using method thereof.The composite aluminum pipe double-end spinning machine comprises a working table, a rotating clamp is detachably installed on the working table, servo driving mechanisms are symmetrically arranged on the two sides of the rotating clamp, and each servo driving mechanism comprises three sets of servo driving motors and three sets of stepping driving motors; the two sets of symmetrically-arranged spinning wheels are driven through the lead screw sliding table module, and the two ends of the small-pipe-diameter blank pipe are extruded and sealed. The using method comprises the steps of resetting operation, setting operation parameters, and sequentially completing pushing feeding, clamping and fixing, spinning sealing, moving wheel withdrawing and loosening discharging operation. The three sets of servo motors and the stepping motors drive the spinning wheels to extrude and shape the two ends of the blank pipe according to the set operation parameters, the sealing production process of the small-pipe-diameter composite aluminum pipe is simplified, and the production efficiency and the sealing quality are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of composite aluminum tube processing equipment, and in particular to a composite aluminum tube double-head spinning machine and a control method. Background Art

[0002] Aluminum alloy composite headers are widely used in various welded structural products due to their light weight, high strength, good corrosion resistance, non-magnetic, good formability and good low-temperature performance. They use aluminum alloys instead of steel plates and copper materials for welding, and the weight of the structure can be reduced by more than 50%. Therefore, aluminum alloy composite aluminum tubes (aluminum alloy composite headers) are used in more and more fields, including various heat exchangers for fuel vehicles, heat exchange components for new energy vehicle batteries, heat exchange for new energy energy storage, heat exchangers for household and commercial air conditioners, heat exchangers for 5G base stations, heat exchangers for air-cooled islands in power stations, and heat exchangers for large-scale engineering machinery.

[0003] The existing sealing process for collecting pipes is to install plugging caps and then weld them to achieve sealing. However, the plugging cap welding method is suitable for composite aluminum collecting pipes with large diameter and appropriate wall thickness. When facing the production of small diameter and thin-walled rapid flow pipes, the production of the plugging caps is small in size, and its processing and welding process is prone to problems such as loose welding and incomplete sealing, which makes it impossible to effectively guarantee the uniformity of product quality, resulting in a decrease in the production efficiency of the production line and a high scrap rate. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a composite aluminum tube double-head spinning machine and a control method.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: a composite aluminum tube double-head spinning machine, comprising:

[0006] A work surface, on which a rotating fixture is detachably mounted, and servo drive mechanisms are symmetrically arranged on both sides of the rotating fixture, and the servo drive mechanisms are used to drive the spinning wheel to extrude and shape the embryo tube according to a set running trajectory;

[0007] The servo drive mechanism includes three groups of servo drive motors and three groups of stepper drive motors. The servo drive motors and the stepper drive motors drive two groups of symmetrically arranged spinning wheels through a screw slide module to extrude and seal the two ends of the small-diameter embryo tube.

[0008] As a further description of the above technical solution, the servo drive mechanism includes a feeding drive mechanism, a clamping drive mechanism and a spinning drive mechanism. The feeding drive mechanism is used to complete the feeding operation of the embryo tube, the clamping drive mechanism is used to complete the rotation operation of the rotating fixture, and the spinning drive mechanism is used to complete the spinning operation of the spinning wheel.

[0009] As a further description of the above technical solution, a loading platform is arranged at the rear side of the rotating clamp, and the loading platform is provided with an embryo tube rack, and the embryo tube rack is used to place the embryo tubes to be processed, and the embryo tube rack performs feeding operation through a feeding drive mechanism and a feeding cylinder.

[0010] As a further description of the above technical solution, the feeding drive mechanism includes a first stepper motor, which is arranged at the front of the embryo tube material rack, and the first stepper motor drives the screw slide module to drive the embryo tube material rack to move to the front of the clamping hole of the rotating fixture, and the feeding cylinder is arranged on one side of the embryo tube material rack, and the feeding cylinder pushes the embryo tube into the clamping hole;

[0011] The clamping drive mechanism includes a first servo motor, which is arranged below the work surface. The first servo motor drives the rotating fixture to rotate through a belt transmission assembly.

[0012] As a further description of the above technical solution, the spinning drive mechanism includes a second stepper motor and a third stepper motor, the second stepper motor and the third stepper motor are symmetrically arranged on both sides of the spinning wheel, and the second stepper motor and the third stepper motor drive the spinning wheel to move through a screw slide module;

[0013] A second servo motor is arranged on one side of the second stepper motor, and the second servo motor drives the second stepper motor to move through a screw slide module. A third servo motor is arranged on one side of the third stepper motor, and the third servo motor drives the third stepper motor to move through a screw slide module.

[0014] A method for using a spinning machine, the specific steps comprising:

[0015] S1, after the equipment is powered on, the reset operation is performed to reset all servo drive mechanisms to their initial positions;

[0016] S2, the operating table sets the equipment processing parameters and starts processing, and the servo drive mechanism completes the pushing feeding, clamping and spinning sealing operations in sequence;

[0017] S3, after the shaping is completed, the servo drive mechanism moves the wheel back and loosens the material.

[0018] As a further description of the above technical solution, the reset operation includes:

[0019] The second servo motor and the third servo motor return to the origin through the screw slide module, the second stepper motor and the third stepper motor return to the origin through the screw slide module, and the first stepper motor returns to the origin through the screw slide module.

[0020] As a further description of the above technical solution, the pushing feeding, clamping fixing and spinning sealing operations include:

[0021] The first stepper motor moves the embryo tube rack to the front of the tube clamping hole of the rotating fixture through the screw slide module. The feeding cylinder extends to push the embryo tube to be processed into the clamping hole of the fixture and stays for 3 seconds. After the rotating fixture clamps the embryo tube, the first stepper motor drives the embryo tube rack back to the origin.

[0022] After the embryo tube rack returns to the origin, the second servo motor, the third servo motor, the second stepper motor and the third stepper motor push the spinning wheel to one side of the embryo tube at high speed through the screw slide module;

[0023] The first servo motor drives the embryo tube to rotate at high speed through the rotating fixture, and the second servo motor and the third servo motor drive the spinning wheel to move forward slowly through the screw slide module. At the same time, the second stepper motor and the third stepper motor drive the spinning wheel to move backward slowly, so that the two ends of the embryo tube are sealed under the extrusion of the spinning wheel;

[0024] After the second servo motor and the third servo motor stop, the second stepper motor and the third stepper motor drive the spinning wheel to slowly move from both ends of the embryo tube to the middle to extrude and shape the sealing surface.

[0025] As a further description of the above technical solution, the moving wheel backing and loosening material unloading operations include:

[0026] The second stepper motor and the third stepper motor drive the spinning wheel to move outward a certain distance at high speed;

[0027] The second servo motor, the third servo motor, the second stepper motor and the third stepper motor drive the spinning wheel to return to the origin, the first servo motor stops rotating, the rotating fixture stops rotating and releases the processed embryo tube.

[0028] As a further description of the above technical solution, the spindle speed of the spinning wheel is 100-500r / min, the lateral feed speed of the spinning wheel is 0.1-4mm / s, the longitudinal retreat speed of the spinning wheel is 0.1-1mm / s, the longitudinal feed speed of the spinning wheel is 1mm / s, and the clamping force of the rotating fixture is 0.1-1MPa.

[0029] The present invention has the following beneficial effects:

[0030] 1. The servo drive mechanism of the present invention includes a feeding drive mechanism, a clamping drive mechanism and a spinning drive mechanism. After the embryo tube to be processed is clamped and fixed by a rotating fixture, three sets of servo motors and stepper motors are used to drive the spinning wheels to uniformly extrude and shape the two ends of the embryo tube according to the set operating parameters, thereby simplifying the sealing production process of small-diameter composite aluminum tubes and effectively improving the production efficiency and sealing quality.

[0031] 2. In the present invention, the second servo motor and the third servo motor drive the spinning wheel to move forward slowly through the screw slide module, and the second stepper motor and the third stepper motor drive the spinning wheel to move backward slowly, so that the two ends of the embryo tube are sealed under the extrusion of the spinning wheel. After the second servo motor and the third servo motor stop, the second stepper motor and the third stepper motor drive the spinning wheel to move slowly from the two ends of the embryo tube to the middle, and extrude the sealing surface. This processing process can effectively release the shear stress in the processing process and prevent the embryo tube from being cut;

[0032] 3. In the present invention, the second stepper motor and the third stepper motor drive the spinning wheel to move outward at a certain distance at high speed. The wheel withdrawal operation can effectively reduce the generation of indentations at both ends of the embryo tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a front view of the spinning machine of the present invention;

[0034] Figure 2 A top view of the spinning machine of the present invention;

[0035] Figure 3 It is a side view of the rotary fixture, loading platform and embryo tube rack of the present invention;

[0036] Figure 4 The figure is a schematic diagram of the process of using the present invention.

[0037] Legend:

[0038] 1. Work table; 2. Rotating fixture; 21. Pipe clamping hole; 3. Servo drive mechanism; 31. Feeding drive mechanism; 311. First stepper motor; 32. Clamping drive mechanism; 321. First servo motor; 33. Spinning drive mechanism; 331. Second stepper motor; 332. Third stepper motor; 333. Second servo motor; 334. Third servo motor; 4. Screw slide module; 5. Spinning wheel; 6. Loading table; 7. Embryo tube rack; 8. Feeding cylinder. DETAILED DESCRIPTION

[0039] 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.

[0040] The embodiment of the present application provides a double-head spinning machine for composite aluminum tubes, which solves the problem that the cap welding method in the prior art is only applicable to composite aluminum manifolds with large diameters and appropriate wall thicknesses. When facing the production of small diameter thin-walled manifolds, the welding is not firm and the sealing is not complete during the processing and welding process, which makes it impossible to effectively guarantee the uniformity of product quality, resulting in a decrease in the production efficiency of the production line and a high scrap rate. The present application uses a servo drive mechanism including a feeding drive mechanism, a clamping drive mechanism and a spinning drive mechanism. After the embryo tube to be processed is clamped and fixed by a rotating fixture, three sets of servo motors and stepper motors are used to drive the spinning wheel, and the two ends of the embryo tube are uniformly extruded and shaped according to the set operating parameters, which simplifies the sealing production process of small diameter composite aluminum tubes and effectively improves production efficiency and sealing quality.

[0041] Please refer to the following examples for details:

[0042] Reference Figure 1 The present invention provides an embodiment of a double-head spinning machine for a composite aluminum tube, and the specific structure includes: a work table 1, a rotating fixture 2 is detachably installed on the work table 1, and servo drive mechanisms 3 are symmetrically arranged on both sides of the rotating fixture 2. The spinning wheels 5 are driven by three groups of servo motors and stepper motors to uniformly extrude and shape the two ends of the embryo tube, thereby simplifying the sealing production process of small-diameter composite aluminum tubes. The automated processing method not only reduces the complexity of manual operation, but also reduces operating errors, effectively improves production efficiency, and ensures the uniformity of sealing quality.

[0043] Furthermore, the servo drive mechanism 3 includes a feeding drive mechanism 31, a clamping drive mechanism 32 and a spinning drive mechanism 33. The feeding drive mechanism 31 is mainly used to realize the feeding operation of the embryo tube, the clamping drive mechanism 32 is responsible for the rotation operation of the rotating fixture 2, and the spinning drive mechanism 33 completes the spinning operation of the spinning wheel 5.

[0044] Specifically, the servo drive mechanism 3 is composed of three groups of servo drive motors and three groups of stepper drive motors. The drive motor drives two groups of symmetrically arranged spinning wheels 5 through the screw slide module 4 to achieve extrusion sealing of the two ends of the small-diameter embryo tube.

[0045] Please continue reading Figure 1-Figure 3 A loading platform 6 is provided at the rear side of the rotating fixture 2, and a tube rack 7 is provided on the loading platform 6 for placing the tubes to be processed. When the tubes need to be processed, the feeding drive mechanism 31 drives the tube rack 7 to move, and cooperates with the feeding cylinder 8 to accurately feed the tubes into the rotating fixture 2 for subsequent processing.

[0046] Furthermore, the feeding drive mechanism 31 includes a first stepper motor 311, which is arranged at the front of the embryo tube rack 7. The first stepper motor 311 drives the embryo tube rack 7 to accurately move to the position directly in front of the tube clamping hole 21 of the rotating clamp 2 by driving the screw slide module 4; the feeding cylinder 8 is arranged on one side of the embryo tube rack 7, and pushes the embryo tube to be accurately fed into the tube clamping hole 21 of the rotating clamp 2.

[0047] Please continue reading Figure 1-Figure 3 The clamping drive mechanism 32 includes a first servo motor 321. The first servo motor 321 is positioned below the work surface 1 and is connected to the rotary fixture 2 through a belt drive assembly. By precisely controlling the rotation speed and direction of the first servo motor 321, it can be ensured that the embryo tube to be processed in the rotary fixture 2 can rotate smoothly during the processing.

[0048] Please continue reading Figure 1-Figure 3 The spinning drive mechanism 33 includes a second stepper motor 331 and a third stepper motor 332. The second stepper motor 331 and the third stepper motor 332 are symmetrically arranged on both sides of the spinning wheel 5. The second stepper motor 331 and the third stepper motor 332 jointly drive the movement of the spinning wheel 5 through the screw slide module 4 to ensure the accuracy and stability of the spinning operation.

[0049] Furthermore, a second servo motor 333 is provided on one side of the second stepper motor 331, and the motor drives the movement of the second stepper motor 331 through the screw slide module 4; and a third servo motor 334 is also provided on one side of the third stepper motor 332, which drives the movement of the third stepper motor 332 through the screw slide module 4.

[0050] Please continue reading Figure 1-Figure 4 , a method for using a spinning machine, the specific steps comprising:

[0051] S1, after the device is powered on, a reset operation is performed to reset all servo drive mechanisms 3 to their initial positions:

[0052] The second servo motor 333 and the third servo motor 334 return to the origin through the screw slide module 4, the second stepper motor 331 and the third stepper motor 332 return to the origin through the screw slide module 4, and the first stepper motor 311 returns to the origin through the screw slide module 4;

[0053] S2, after setting the equipment processing parameters, the operating table starts the processing operation, and the servo drive mechanism 3 completes the operation steps of pushing and feeding, clamping and fixing, and spinning and sealing in sequence according to the pre-set program; this continuous processing process accurately controls the execution of each link and effectively releases the shear stress generated during the processing, thereby preventing the embryo tube from being cut during the processing:

[0054] The first stepper motor 311 moves the embryo tube rack 7 to the front of the tube clamping hole 21 of the rotating fixture 2 through the screw slide module 4, and the feeding cylinder 8 extends to push the embryo tube to be processed into the clamping hole of the fixture and stays for 3 seconds. After the rotating fixture 2 clamps the embryo tube, the first stepper motor 311 drives the embryo tube rack 7 back to the origin;

[0055] After the embryo tube rack 7 returns to the origin, the second servo motor 333, the third servo motor 334, the second stepper motor 331 and the third stepper motor 332 push the spinning wheel 5 to one side of the embryo tube at high speed through the screw slide module 4;

[0056] The first servo motor 321 drives the embryo tube to rotate at high speed through the rotating fixture 2, and the second servo motor 333 and the third servo motor 334 drive the spinning wheel 5 to move forward slowly through the screw slide module 4, while the second stepper motor 331 and the third stepper motor 332 drive the spinning wheel 5 to move backward slowly, so that the two ends of the embryo tube are sealed under the extrusion of the spinning wheel 5;

[0057] After the second servo motor 333 and the third servo motor 334 stop, the second stepper motor 331 and the third stepper motor 332 drive the spinning wheel 5 to slowly move from both ends of the embryo tube to the middle to extrude and shape the sealing surface;

[0058] It should be explained in detail that the spindle speed of the spinning wheel 5 is 100-500r / min, the lateral feed speed of the spinning wheel 5 is 0.1-4mm / s, the longitudinal retreat speed of the spinning wheel 5 is 0.1-1mm / s, the longitudinal feed speed of the spinning wheel 5 is 1mm / s, and the clamping force of the rotating fixture 2 is 0.1-1MPa. The specific operating parameters are shown in the following table:

[0059]

[0060] S3, after the shaping is completed, the servo drive mechanism 3 starts to move the wheel back and loosen the material. This step is to effectively reduce the indentations at both ends of the embryo tube and ensure product quality:

[0061] The second stepper motor 331 and the third stepper motor 332 drive the spinning wheel 5 to move outward at a high speed for a certain distance;

[0062] The second servo motor 333, the third servo motor 334, the second stepper motor 331 and the third stepper motor 332 drive the spinning wheel 5 to return to the origin in sequence, the first servo motor 321 stops rotating, the rotating fixture 2 stops rotating and releases the processed embryo tube.

[0063] 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. A composite aluminum tube double-head spinning machine, characterized in that: include: A work surface (1), wherein a rotating fixture (2) is detachably mounted on the work surface (1), and servo drive mechanisms (3) are symmetrically arranged on both sides of the rotating fixture (2), and the servo drive mechanisms (3) are used to drive a spinning wheel (5) to extrude and shape the embryo tube according to a set running trajectory; The servo drive mechanism (3) comprises three groups of servo drive motors and three groups of stepper drive motors. The servo drive motors and the stepper drive motors drive two groups of symmetrically arranged spinning wheels (5) through a screw slide module (4) to extrude and seal the two ends of the small-diameter embryo tube.

2. A composite aluminum tube double-head spinning machine according to claim 1, characterized in that: The servo drive mechanism (3) comprises a feeding drive mechanism (31), a clamping drive mechanism (32) and a spinning drive mechanism (33); the feeding drive mechanism (31) is used to complete the feeding operation of the embryo tube, the clamping drive mechanism (32) is used to complete the rotation operation of the rotating fixture (2), and the spinning drive mechanism (33) is used to complete the spinning operation of the spinning wheel (5).

3. A composite aluminum tube double-head spinning machine according to claim 2, characterized in that: A loading platform (6) is arranged at the rear side of the rotating fixture (2), and the loading platform (6) is provided with an embryo tube material rack (7). The embryo tube material rack (7) is used to place the embryo tubes to be processed, and the embryo tube material rack (7) performs feeding operation through a feeding drive mechanism (31) in cooperation with a feeding cylinder (8).

4. A composite aluminum tube double-head spinning machine according to claim 3, characterized in that: The feeding drive mechanism (31) comprises a first stepper motor (311), which is arranged at the front of the embryo tube rack (7). The first stepper motor (311) drives the screw slide module (4) to drive the embryo tube rack (7) to move to the front of the tube clamping hole (21) of the rotating fixture (2). The feeding cylinder (8) is arranged at one side of the embryo tube rack (7), and the feeding cylinder (8) pushes the embryo tube into the tube clamping hole (21); The clamping drive mechanism (32) comprises a first servo motor (321), wherein the first servo motor (321) is arranged below the work surface (1), and the first servo motor (321) drives the rotating clamp (2) to rotate via a belt transmission assembly.

5. The double-head spinning machine for composite aluminum tube according to claim 2, characterized in that: The spinning drive mechanism (33) comprises a second stepping motor (331) and a third stepping motor (332), wherein the second stepping motor (331) and the third stepping motor (332) are symmetrically arranged on both sides of the spinning wheel (5), and the second stepping motor (331) and the third stepping motor (332) drive the spinning wheel (5) to move via a screw slide module (4); A second servo motor (333) is provided on one side of the second stepper motor (331), and the second servo motor (333) drives the second stepper motor (331) to move via a screw slide module (4); a third servo motor (334) is provided on one side of the third stepper motor (332), and the third servo motor (334) drives the third stepper motor (332) to move via a screw slide module (4).

6. A method for using a spinning machine, characterized in that: The specific steps include: S1, after the device is powered on, a reset operation is performed to reset the servo drive mechanism (3) to its initial position; S2, the operating table sets the equipment processing parameters and starts processing, and the servo drive mechanism (3) completes the pushing feeding, clamping and sealing operations in sequence; S3, after the shaping is completed, the servo drive mechanism (3) performs the operations of moving the wheel back and loosening the material.

7. A method for using a spinning machine according to claim 6, characterized in that: The reset operation includes: The second servo motor (333) and the third servo motor (334) return to the origin through the screw slide module (4), the second stepper motor (331) and the third stepper motor (332) return to the origin through the screw slide module (4), and the first stepper motor (311) returns to the origin through the screw slide module (4).

8. A method for using a spinning machine according to claim 6, characterized in that: Push-feed, clamp-lock and spin-seal operations include: The first stepper motor (311) moves the embryo tube material rack (7) to the front of the tube clamping hole (21) of the rotating fixture (2) through the screw slide module (4), and the feeding cylinder (8) extends to push the embryo tube to be processed into the clamping hole of the fixture and stays for 3 seconds. After the rotating fixture (2) clamps the embryo tube, the first stepper motor (311) drives the embryo tube material rack (7) back to the origin; After the embryo tube rack (7) returns to the origin, the second servo motor (333), the third servo motor (334), the second stepping motor (331) and the third stepping motor (332) push the spinning wheel (5) to one side of the embryo tube at high speed through the screw slide module (4); The first servo motor (321) drives the embryo tube to rotate at high speed through the rotating fixture (2), the second servo motor (333) and the third servo motor (334) drive the spinning wheel (5) to move forward slowly through the screw slide module (4), and at the same time, the second stepping motor (331) and the third stepping motor (332) drive the spinning wheel (5) to move backward slowly, so that the two ends of the embryo tube are sealed under the squeezing of the spinning wheel (5); After the second servo motor (333) and the third servo motor (334) stop, the second stepper motor (331) and the third stepper motor (332) drive the spinning wheel (5) to slowly move from both ends of the embryo tube to the middle to extrude and shape the sealing surface.

9. A method for using a spinning machine according to claim 6, characterized in that: The operations of moving the wheel back and loosening the material include: The second stepper motor (331) and the third stepper motor (332) drive the spinning wheel (5) to move outward a certain distance at high speed; The second servo motor (333), the third servo motor (334), the second stepping motor (331) and the third stepping motor (332) drive the spinning wheel (5) to return to the origin, the first servo motor (321) stops rotating, the rotating fixture (2) stops rotating and releases the processed embryo tube.

10. A method for using a spinning machine according to claim 8, characterized in that: The spindle speed of the spinning wheel (5) is 100-500r / min, the lateral feed speed of the spinning wheel (5) is 0.1-4mm / s, the longitudinal retreat speed of the spinning wheel (5) is 0.1-1mm / s, the longitudinal feed speed of the spinning wheel (5) is 1mm / s, and the clamping force of the rotating fixture (2) is 0.1-1MPa.

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