Alloy copper pipe port necking machine and control method thereof

Abstract

The invention relates to the field of machining equipment, and discloses an alloy copper pipe port necking machine and a control method thereof, and the alloy copper pipe port necking machine is provided with a plurality of functional parts to achieve accurate necking and lubricating treatment of a copper pipe. The equipment comprises a table plate, an electric telescopic rod and a clamping block are installed on the top of the table plate, and a copper pipe can be clamped. The shaping pipe is driven by the servo motor and the threaded cover to rotate and move, and necking of the copper pipe is completed. In order to ensure the smooth machining process, the equipment is provided with a lubricating mechanism, and a transmission gear and a force arm drive a holed rod to provide engine oil lubrication for the surface of the copper pipe. Furthermore, dynamic guiding of the inner wall of the shaping pipe is achieved through an electric telescopic rod and a sliding block, and stable necking and smooth disengaging of the copper pipe are guaranteed. According to the device, through the automatic control step, the precise mechanical structure and lubricating design are combined, necking and lubricating treatment of the end opening of the copper pipe can be efficiently completed, and the production efficiency and the machining quality are improved.

Description

Technical Field

[0001] The present invention relates to the field of machining equipment, and particularly to a port necking machine for alloy copper tubes and its control method. Background Art

[0002] The port necking machine for alloy copper tubes plays an important role in modern manufacturing. Especially when it comes to fields such as fluid pipelines, air conditioning systems, and automotive and electronic equipment, alloy copper tubes are widely used. Due to its excellent thermal conductivity, corrosion resistance, and strength, copper tubes have become an indispensable material in these industries. And during the processing, the treatment of the port is particularly important. The port necking machine is a device specifically used for necking the ports of alloy copper tubes.

[0003] Alloy copper tubes are widely used in industries such as refrigeration, air conditioning, heating, ventilation, automotive, electronics, and aerospace. These industries have strict requirements for copper tubes. Not only do the copper tubes themselves need to have excellent physical and mechanical properties, but also high precision is required during connection and processing. The common specifications of alloy copper tubes include outer diameters ranging from a few millimeters to dozens of millimeters. Usually, the ports of copper tubes need to be necked to facilitate connection with other pipes or equipment.

[0004] The port necking treatment of copper tubes is mainly to facilitate connection with joints, valves, fittings, etc. The necking process has high requirements because if the material and processing conditions of the copper tube are not appropriate during the necking process, it is easy to cause surface deformation, inaccurate dimensions, and even rupture. Therefore, the design and application of the port necking machine are of crucial importance.

[0005] Necessity of alloy copper tube port necking: Connection requirement: In actual use, alloy copper tubes often need to be connected to other pipes or fittings. The port necking treatment is a key technical step to achieve this connection. The necked port can be conveniently connected to joints, valves, or other pipes to achieve smooth fluid flow.

[0006] Sealing requirement: In fields such as air conditioning, refrigeration, and hydraulic systems, the sealing of pipes is of crucial importance. Through the necking treatment of alloy copper tubes, the ports can fit tightly with other fittings, reducing the leakage risk at the connection part and ensuring the safety and stability of the system.

[0007] Meeting diverse requirements: With the increasing diversification of industrial production and consumer demands, alloy copper tubes are more widely used in various fields. The ports of different specifications of pipes need to be necked according to actual needs to meet the connection requirements of different specifications and structures.

[0008] The port necking machine usually shrinks the port of the copper tube to a specific size by the action of mechanical force. Its working principle can generally be divided into the following steps: Pipe clamping: The copper pipe is clamped on the operating table of the port necking machine to ensure the stability of the pipe during processing and prevent the pipe from sliding or skewing.

[0009] Necking die positioning: The port necking machine is equipped with special dies. According to the specifications of the copper pipe and the required port shape, an appropriate die is selected and installed on the machine.

[0010] Necking operation: The machine adjusts the pressure through the control system and uses mechanical equipment to gradually reduce the port of the copper pipe to the required size. During the necking process, the pressure, speed, and precision of the machine need to be precisely controlled to ensure the quality of the copper pipe port.

[0011] Quality inspection and adjustment: After processing, usually an automatic detection system or manual inspectors will check the copper pipe port to ensure that its necking precision, surface smoothness, and other related performances meet the standard requirements. If unqualified ports appear, rework or reprocessing is required.

[0012] The early alloy copper pipe port necking machine consisted of a power device, a die, and a manual control device. During operation, the pipe was manually placed. The motor was driven by a belt, and the die extruded the port for necking. However, due to the low transmission efficiency of the power device, the necking speed was slow. The poor die positioning accuracy and low manual control precision led to large deviations in the necking size of the copper alloy pipe and a high rejection rate. The existing necking machine uses a servo motor, modular fine-tuning dies, and an automated intelligent control device, which solves the problems of low efficiency, poor accuracy, and manual dependence. However, there is still a problem that when the necking machine is running, the copper pipe is prone to swing and deviation due to the lack of stable support. This not only causes deviations in the necking size but also makes it difficult to ensure the roundness of the copper pipe port, affecting the flatness and sealing performance of the port. At the same time, the axial straightness of the copper pipe is also affected, resulting in the processed copper pipe not meeting the high-precision usage requirements. Summary of the Invention

[0013] To make up for the above deficiencies, the present invention provides a port necking machine for alloy copper pipes and its control method, aiming to improve the problem of lack of guidance during necking of copper alloy pipes in the prior art.

[0014] To achieve the above object, the present invention adopts the following technical solutions: Port necking machine for alloy copper pipe, comprising a table board, on the top inner wall of which an electric telescopic rod I is fixedly connected, the other end of the electric telescopic rod I is fixedly connected with a clamping block, in the middle of the top side of the table board a guiding block is fixedly connected, inside the guiding block a shaping pipe is slidably connected, on the left outer wall of the shaping pipe a threaded cover is threadedly connected, on the left top of the table board a servo motor II is fixedly connected, the output end of the servo motor II is fixedly connected with the right end of the threaded cover, on the left inner wall of the shaping pipe an electric telescopic rod II is fixedly connected, on the middle parts of the front and rear sides inside the shaping pipe sliding blocks are slidably connected, on the right inner wall of the shaping pipe a gasket is fixedly connected, the other end of the gasket is fixedly connected with a return spring II, in the middle of the bottom side of the table board a lubricating mechanism is arranged, and the lubricating mechanism is used for lubricating the surface of the copper alloy pipe.

[0015] Further, the lubricating mechanism comprises a servo motor I, the servo motor I is fixedly connected in the middle of the bottom side of the table board, the output end of the servo motor I is fixedly connected with a driving gear I, on the outer wall of the driving gear I a driving gear II is engaged, on the left side of the driving gear II a force arm is fixedly connected, on the adjacent sides inside the force arm a perforated rod is rotatably connected, on the top of the perforated rod an oil box is communicated, on the bottom of the perforated rod a sponge block is communicated, and on the adjacent sides of the force arm and the perforated rod a return spring I is fixedly connected.

[0016] Further, on the front and rear sides of the servo motor II fixing blocks are fixedly connected, on the left and right sides of the top outer wall of the fixing blocks screws are threadedly connected.

[0017] Further, on the right top of the table board a servo motor III is fixedly connected, the output end of the servo motor III is rotatably connected with a V-shaped rotating plate.

[0018] Further, on the front side of the right part of the table board a feeding bin is fixedly connected, on the rear side of the right part of the table board an inclined groove is opened.

[0019] Further, on the middle right side of the table board an electric telescopic rod III is fixedly connected, the other end of the electric telescopic rod III is fixedly connected with a magnetic block.

[0020] Further, on the four weeks of the top of the table board C-shaped blocks are fixedly connected, on the bottom outer wall of the C-shaped blocks screws are threadedly connected.

[0021] Further, on the rear side of the right part of the table board an L-shaped block is fixedly connected, inside the L-shaped block a sliding block is slidably connected, on the front sides of the L-shaped block and the sliding block threaded rods are threadedly connected.

[0022] The control method of this necking machine comprises the following steps: ① First, place the copper alloy tube in the middle of the table. When the copper alloy tube is at the bottom of the clamp, the electric telescopic rod 1 controls the clamp to clamp the copper alloy tube. At this time, the servo motor 2 rotates, driving the threaded cover to rotate, causing the shaping tube to rotate and move to the right. ② When the copper alloy tube enters the inner wall of the shaping tube, the second electric telescopic rod pushes the slider to slide to the left and right on the shaping tube (6), forming an empty sandwich with the inner wall of the shaping tube, guiding the copper alloy tube to shrink; ③ After the shrinking is completed, the electric telescopic rod 2 shrinks to the left, and the reset spring 2 pushes the gasket to the left, so that the slider is retracted to the middle of the inner wall along the shaping tube slide groove. Then, the servo motor 2 rotates in the opposite direction, driving the threaded cover to rotate, so that the shaping tube rotates and moves to the left, allowing the copper alloy tube to escape from the shaping tube; ④ When the copper alloy tube passes through the inner wall of the transmission gear 2, the servo motor 1 drives the transmission gear 1 to operate, driving the transmission gear 2 to rotate synchronously. When the transmission gear 2 operates, the driving arm rotates around the copper alloy tube, causing the sponge block on the perforated rod to contact the copper alloy tube and start initial lubrication; ⑤ When the copper alloy tube enters the shaping tube, the left side of the shaping tube squeezes the perforated rod to the left, so that the sponge block fits the copper alloy tube more closely. At this time, the engine oil flows from the flat mouth at the bottom of the oil box into the inner wall of the perforated rod and is absorbed by the sponge block, continuously providing lubrication for the copper alloy tube; ⑥ Then, the shaping tube moves to the left, and the copper alloy tube moves out from its inner wall to the right. Once the return spring takes effect, the perforated rod is reset and the copper alloy tube is released, thus completing the entire process of automatic lubrication of the surround type machine.

[0023] With the advancement of industrialization, especially in the fields of manufacturing and automation, copper alloy tubes are widely used in heat exchangers, refrigeration equipment and electrical industries. The existing shrinking machines have problems such as low efficiency and insufficient precision, so it is necessary to develop an automated, precise and reliable shrinking equipment. According to these requirements, it was decided to design an alloy copper tube port shrinking machine that integrates multiple functions, can accurately process copper alloy tubes, and provide a good lubrication system.

[0024] During the preliminary design phase, we analyzed the characteristics of alloy copper tubes and determined the basic functions required by the equipment. Considering the characteristics of copper alloy tubes, such as easy wear and good heat transfer, special attention needs to be paid to the design of the lubrication system to reduce friction and increase service life. At the same time, the design also needs to consider automation and adjustability to ensure that the equipment can adapt to copper tubes of different sizes and specifications.

[0025] The main design contents include: Table design: used as the supporting platform of the equipment, the connection structure for fixing each important component is designed. Electric telescopic rod: the function of clamping and adjusting the pipe is realized through electric telescopic rod.

[0026] Servo motor: Ensure that each component can be precisely adjusted as needed.

[0027] Lubrication mechanism: Use a combination of an oil box and a sponge block to ensure effective lubrication of the surface of the copper alloy tube and reduce friction during the processing.

[0028] To ensure stability and precision, the cooperation between the servo motor and the transmission gear system is designed, especially the lever arm design in the lubrication system, so that the oil can be evenly distributed on the surface of the copper tube. At the same time, according to the size and shape of the alloy copper tube, the designs of the electric telescopic rod, clamping block, shaping tube, etc. are adjusted to make them have higher adaptability and precision.

[0029] Secondly, special attention is also paid to the cooperation of each component to ensure that the entire system can operate efficiently and avoid jamming or errors.

[0030] The research and development of the alloy copper tube port necking machine has gone through detailed market research and innovative design, and finally achieved a precise, automated and efficient copper tube processing solution. Through the introduction of this equipment, the production efficiency has been significantly improved, the labor cost has been reduced, and higher precision and quality assurance have been provided during the copper tube processing.

[0031] The present invention has the following beneficial effects: 1. In the present invention, the copper alloy tube is placed in the middle of the table board. When it is at the bottom of the clamping block, the electric telescopic rod 1 controls the clamping block to clamp. The servo motor 2 drives the threaded cover to move the shaping tube to the right. The electric telescopic rod 2 pushes the slider to slide to both sides, forming an empty interlayer with the inner wall of the shaping tube to guide the necking. The electric telescopic rod 2 contracts, and the return spring 2 pushes the gasket to make the slider close. The servo motor 2 rotates in reverse, driving the shaping tube to move to the left, so that the copper alloy tube can be taken out, avoiding the problems of shaking and non-coincidence of the axis during necking.

[0032] 2. Before using this necking machine, the copper alloy tube passes through the inner wall of the transmission gear 2. At this time, the servo motor 1 drives the transmission gear 1 and the transmission gear 2 to rotate, and then the lever arm rotates around the copper alloy tube. After the copper alloy tube enters the shaping tube, the left side of the shaping tube squeezes the perforated rod, making the sponge block fit better. The oil flows from the oil box into the perforated rod and is absorbed by the sponge block for continuous lubrication. Finally, the shaping tube moves to the left, and the copper alloy tube is taken out. The return spring 1 makes the perforated rod reset, completing the circumferential automatic lubrication. Description of the Drawings

[0033] Figure 1 It is a three-dimensional view of the alloy copper tube port necking machine proposed by the present invention; Figure 2 It is a side view of the alloy copper tube port necking machine proposed by the present invention; Figure 3 It is a structural schematic diagram of the V-shaped rotating plate of the alloy copper tube port necking machine proposed by the present invention; Figure 4 Cross-sectional view of the shaping tube of the port necking machine for alloy copper tubes proposed by the present invention; Figure 5 Exploded view of the second transmission gear of the port necking machine for alloy copper tubes proposed by the present invention; Figure 6 Exploded view of the perforated rod of the port necking machine for alloy copper tubes proposed by the present invention; Legend: 1. Table board; 2. Lubrication mechanism; 201. First servo motor; 202. First transmission gear; 203. Second transmission gear; 204. Lever arm; 205. Perforated rod; 206. First return spring; 207. Sponge block; 208. Oil box; 3. First electric telescopic rod; 4. Clamping block; 5. Guide block; 6. Shaping tube; 7. Threaded cover; 8. Second servo motor; 9. Second electric telescopic rod; 10. Slide block; 11. Gasket; 12. Second return spring; 13. Screw; 14. Fixed block; 15. V-shaped rotating plate; 16. Third servo motor; 17. Feeding bin; 18. Inclined groove; 19. Third electric telescopic rod; 20. Magnetic block; 21. C-shaped block; 22. Threaded nail; 23. L-shaped block; 24. Sliding block; 25. Threaded rod. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0035] Refer to Figure 1 , Figure 2 and Figure 4, An embodiment provided by the present invention: A port necking machine for alloy copper pipes, including a table board 1. The table board 1 is the load-bearing structure of the device. At the bottom of the clamping block 4, the table board 1 has a block with the same shape as the clamping block 4 but with the groove facing upwards. The table board 1 is grooved at the bottom of the lubrication mechanism 2. At the top of the inner wall of the table board 1, an electric telescopic rod 3 is fixedly connected. When the copper alloy pipe is at the bottom of the clamping block 4, the electric telescopic rod 3 moves the clamping block 4 downward. The other end of the electric telescopic rod 3 is fixedly connected to the clamping block 4, and the clamping block 4 clamps the copper alloy pipe. In the middle of the top side of the table board 1, a guiding block 5 is fixedly connected. The guiding block 5 facilitates the sliding of the shaping pipe 6. The guiding block 5 is slidably connected to the shaping pipe 6. The shaping pipe 6 is used for shaping the copper pipe. A chute is opened in the middle of the cylinder extending from the inner wall of the shaping pipe 6. On the left side of the outer wall of the shaping pipe 6, a threaded cover 7 is threadedly connected. Rotating the threaded cover 7 makes the shaping pipe 6 rotate and move to the right. On the left side of the top of the table board 1, a servo motor 8 is fixedly connected. The servo motor 8 provides power to drive the threaded cover 7 to rotate. The output end of the servo motor 8 is fixedly connected to the right end of the threaded cover 7. On the left side of the inner wall of the shaping pipe 6, an electric telescopic rod 9 is fixedly connected. The electric telescopic rod 9 is used to push the gasket 11 to move on the chute opened on the shaping pipe 6. On the middle parts of the front and rear sides of the inner wall of the shaping pipe 6, sliding blocks 10 are slidably connected. The sliding blocks 10 are pushed by the electric telescopic rod 9 to open outwards, and together with the arc-shaped inner wall of the shaping pipe 6, guide the copper alloy pipe to deform. On the right side of the inner wall of the shaping pipe 6, a gasket 11 is fixedly connected. When the electric telescopic rod 9 contracts to the left, the gasket 11 presses the sliding blocks 10 through the return spring 12, so that the sliding blocks 10 are retracted into the inner wall of the shaping pipe 6 through the chute opened on the shaping pipe 6. The other end of the gasket 11 is fixedly connected to the return spring 12. The return spring 12 is used for the reset of the sliding blocks 10. In the middle of the bottom side of the table board 1, a lubrication mechanism 2 is arranged. The lubrication mechanism 2 is used for lubricating the surface of the copper alloy pipe; Specifically, place the copper alloy pipe in the middle of the table board 1. When the copper alloy pipe is at the bottom of the clamping block 4, the electric telescopic rod 3 controls the clamping block 4 to clamp the copper alloy pipe. At this time, the servo motor 8 rotates, making the threaded cover 7 rotate, so that the shaping pipe 6 rotates and moves to the right. When the copper alloy is inside the inner wall of the shaping pipe 6, at the same time, the electric telescopic rod 9 makes the sliding blocks 10 slide to the left and right sides on the shaping pipe 6, so as to form an empty sandwich layer with the inner wall of the shaping pipe 6, guiding the copper alloy pipe to deform and shrink the mouth. After the shrinkage of the mouth is completed, the electric telescopic rod 9 contracts to the left, and the return spring 12 makes the gasket 11 squeeze to the left, so that the sliding blocks 10 are retracted to the middle of the inner wall of the shaping pipe 6 along the chute opened on the shaping pipe 6. Then the servo motor 8 rotates in the reverse direction, driving the threaded cover 7 to rotate to make the shaping pipe 6 rotate and move to the left, so that the metal pipe is taken out from the shaping pipe 6, thus achieving the effect of reducing the shaking of the copper alloy pipe during necking.

[0036] Refer to Figure 1 , Figure 5 and Figure 6, the lubrication mechanism 2 includes a first servo motor 201 which is used to drive a first transmission gear 202 to rotate. The first servo motor 201 is fixedly connected to the middle of the bottom side of the table board 1. The output end of the first servo motor 201 is fixedly connected with the first transmission gear 202 which is used to conduct kinetic energy. At the same time, a second transmission gear 203 rotates. The outer wall of the first transmission gear 202 meshes with the second transmission gear 203. The right end of the second transmission gear 203 extends out a hollow column and rotates on a preset groove on the table board 1. A lever arm 204 is fixedly connected to the left side of the second transmission gear 203. The lever arm 204 is fixed on the second transmission gear 203 and drives a perforated rod 205 to move around the copper alloy tube. Perforated rods 205 are rotatably connected to adjacent sides of the inner wall of the lever arm 204. The holes formed in the perforated rods 205 allow engine oil to drip from an oil box 208 into a sponge block 207. The top of the perforated rod 205 communicates with the oil box 208. The bottom of the oil box 208 is flat for controlling the oil output. The bottom of the perforated rod 205 communicates with the sponge block 207. The sponge block 207 absorbs the engine oil and lubricates the copper alloy tube. A first return spring 206 is fixedly connected to the adjacent sides of the lever arm 204 and the perforated rod 205. When the copper alloy tube enters the inner wall of the shaping tube 6, the right end of the shaping tube 6 squeezes the perforated rod 205, making the sponge block 207 fit more closely to the copper alloy tube for lubrication. And as the copper alloy tube enters the inner wall of the shaping tube 6, the entered part is lubricated. When the shaping tube 6 moves leftward and the copper alloy tube returns from the inner wall of the shaping tube 6, the first return spring 206 resets the perforated rod 205 to release the copper alloy tube; Specifically, when the copper alloy tube passes through the inner wall of the second transmission gear 203, the first servo motor 201 drives the second transmission gear 203 to rotate. The second transmission gear 203 drives the lever arm 204 to rotate around the copper alloy tube, so that the sponge block 207 on the perforated rod 205 lubricates the copper alloy tube. When the copper alloy tube enters the shaping tube 6, the left side of the shaping tube 6 squeezes the perforated rod 205 leftward, making the sponge block 207 fit more closely to the copper alloy tube. The engine oil is absorbed by the sponge block 207 through the inner wall of the perforated rod 205 from the flat mouth at the bottom end of the oil box 208 to lubricate the copper alloy tube. When the shaping tube 6 moves leftward and the copper alloy tube moves rightward from the inner wall of the shaping tube 6, the first return spring 206 resets the perforated rod 205 to release the copper alloy tube, thus achieving the effect of circumferential mechanical automatic lubrication.

[0037] Refer to Figure 1 and Figure 3, fixed blocks 14 are fixedly connected to both the front and rear sides of the second servo motor 8. The fixed blocks 14 are used to reinforce the second servo motor 8. Screws 13 are threadedly connected to the left and right sides of the top of the outer wall of the fixed blocks 14. The screws 13 fix the fixed blocks 14 on the table board 1. A third servo motor 16 is fixedly connected to the right side of the top of the table board 1. The third servo motor 16 controls the left - right rotation of the V - shaped rotating plate 15. The output end of the third servo motor 16 is rotationally connected to the V - shaped rotating plate 15. One end of the V - shaped rotating plate 15 close to the feeding bin 17 has a hooked arc, which is used to take out the copper alloy tube from the inside of the feeding bin 17, pick up the copper alloy tube when turning towards the feeding bin 17, and send out the processed copper alloy tube when turning towards the inclined chute 18. A feeding bin 17 is fixedly connected to the front side of the right part of the table board 1. The bottom of the feeding bin 17 is open, so that only a little external force is needed to take out one copper alloy tube alone. An inclined chute 18 is provided on the rear side of the right part of the table board 1. The inclined chute 18 is used to control the processed copper alloy tube to slide out; Specifically, tighten the screws 13 on the two fixed blocks 14 to reinforce the second servo motor 8 on the table board 1 and prevent displacement. When the device is working, by rotating the V - shaped rotating plate 15 forward, the hooked side of the V - shaped rotating plate 15 takes out a copper alloy tube alone from the feeding bin 17. After processing, rotate the V - shaped rotating plate 15 backward so that the V - shaped rotating plate 15 is biased towards the inclined chute 18, thereby making the processed copper alloy tube slide out.

[0038] Refer to Figure 1 、 Figure 2 and Figure 3 , an electric telescopic rod three 19 is fixedly connected to the middle part of the right side of the table board 1. The baffle at the right end of the electric telescopic rod three 19 is fixedly connected to the middle part of the right side of the table board 1. The other end of the electric telescopic rod three 19 is fixedly connected to a magnetic block 20. The magnetic block 20 is a strong magnet, which is used to adsorb the copper alloy tube to facilitate the taking out and pushing of the copper alloy tube. C - shaped blocks 21 are fixedly connected to the four - week top of the table board 1. The inner - wall top of the C - shaped blocks 21 is fixedly connected to the four - week top of the table board 1. Screws 22 are threadedly connected to the bottom of the outer wall of the C - shaped blocks 21. The screws 22 are tightened to be engaged with the machine base placed under the table board 1 to prevent the device from shaking. An L - shaped block 23 is fixedly connected to the rear side of the right part of the table board 1. One end of the L - shaped block 23 is grooved, so that the sliding block 24 slides in the groove and the L - shaped block 23 has scales. The inner wall of the L - shaped block 23 is slidably connected to the sliding block 24. The sliding block 24 and the L - shaped block 23 are used to measure the processed copper alloy tube. Threaded rods 25 are threadedly connected to the front sides of both the L - shaped block 23 and the sliding block 24. Rotating the threaded rods 25 makes the L - shaped block 23 and the sliding block 24 approach; Specifically, after the V-shaped turn plate 15 takes the copper alloy tube from the feed chamber 17, the electric telescopic rod 19 pushes the magnetic block 20 to the left to make the copper alloy tube enter the clamping structure composed of the clamping block 4 and the table board 1. After processing is completed, the processed copper alloy tube is taken out to the right from the loosened clamping mechanism by the magnetic force of the magnetic block 20, and the C-shaped block 21 is clamped to the machine base at the bottom of the table board 1 by tightening the C-shaped block 21 on the threaded nail 22, thereby reducing the shaking of the device on the machine base. At the same time, the processed copper alloy tube is placed in the slot between the L-shaped block 23 and the sliding block 24, and the copper alloy tube is gradually clamped by rotating the threaded rod 25, so as to measure the diameter of the processed tube mouth.

[0039] The control method of the necking machine comprises the following steps: ① First, place the copper alloy tube in the middle of the table top 1. When the copper alloy tube is at the bottom of the clamp block 4, the electric telescopic rod 1 3 controls the clamp block 4 to clamp the copper alloy tube. At this time, the servo motor 2 8 rotates, driving the threaded cover 7 to rotate, so that the shaping tube 6 rotates and moves to the right; ② When the copper alloy tube enters the inner wall of the shaping tube 6, the electric telescopic rod 2 9 pushes the slider 10 to slide to the left and right sides on the shaping tube 6, forming an empty interlayer with the inner wall of the shaping tube 6, guiding the copper alloy tube to shrink; ③ After the shrinking is completed, the electric telescopic rod 2 9 shrinks to the left, and the return spring 2 12 pushes the gasket 11 to the left, so that the slider 10 is retracted to the middle of the inner wall along the slide groove of the shaping tube 6. Then, the servo motor 2 8 rotates in the opposite direction, driving the threaded cover 7 to rotate, so that the shaping tube 6 rotates and moves to the left, allowing the copper alloy tube to escape from the shaping tube 6; ④ When the copper alloy tube passes through the inner wall of the transmission gear 203, the servo motor 1 201 drives the transmission gear 1 202 to operate, driving the transmission gear 203 to rotate synchronously. When the transmission gear 203 operates, the driving arm 204 rotates around the copper alloy tube, causing the sponge block 207 on the perforated rod 205 to contact the copper alloy tube and start preliminary lubrication; ⑤ When the copper alloy tube enters the shaping tube 6, the left side of the shaping tube 6 squeezes the perforated rod 205 to the left, so that the sponge block 207 fits the copper alloy tube more closely. At this time, the engine oil flows from the flat mouth at the bottom of the oil box 208 into the inner wall of the perforated rod 205 and is absorbed by the sponge block 207, continuously providing lubrication for the copper alloy tube; ⑥ Then, the shaping tube 6 moves to the left, and the copper alloy tube moves out from its inner wall to the right, and the reset spring 206 plays a role, so that the perforated rod 205 is reset and the copper alloy tube is released, thus completing the whole process of automatic lubrication of the surround type machine.

[0040] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A port shrinking machine for alloy copper tubes, comprising a table (1), characterized in that: An electric telescopic rod (3) is fixedly connected to the top of the inner wall of the table top (1), one end of the electric telescopic rod (3) is fixedly connected to a clamping block (4), a guide block (5) is fixedly connected to the middle of the top side of the table top (1), a shaping tube (6) is slidably connected to the inner wall of the guide block (5), a threaded cover (7) is threadedly connected to the left side of the outer wall of the shaping tube (6), a servo motor (8) is fixedly connected to the left side of the top of the table top (1), and the output end of the servo motor (8) is connected to the screw cap (7). The right end of the patterned cover (7) is fixedly connected, the left side of the inner wall of the shaping tube (6) is fixedly connected with an electric telescopic rod (9), the middle parts of the front and rear sides of the inner wall of the shaping tube (6) are slidably connected with a slider (10), the right side of the inner wall of the shaping tube (6) is fixedly connected with a gasket (11), the other end of the gasket (11) is fixedly connected with a return spring (12), and a lubrication mechanism (2) is provided in the middle of the bottom side of the table top (1), and the lubrication mechanism (2) is used to lubricate the surface of the copper alloy tube.

2. The end shrinking machine of the alloy copper tube according to claim 1, characterized in that: The lubrication mechanism (2) comprises a servo motor 1 (201), the servo motor 1 (201) being fixedly connected to the middle part of the bottom side of the table top (1), the output end of the servo motor 1 (201) being fixedly connected to a transmission gear 1 (202), the outer wall of the transmission gear 1 (202) being meshed with a transmission gear 2 (203), the left side of the transmission gear 2 (203) being fixedly connected to a force arm (204), the inner wall of the force arm (204) being rotatably connected to a rod with a hole (205) on one adjacent side, the top of the rod with a hole (205) being connected to an oil box (208), the bottom of the rod with a hole (205) being connected to a sponge block (207), and the force arm (204) and the adjacent side of the rod with a hole (205) being fixedly connected to a return spring 1 (206).

3. The end shrinking machine of the alloy copper tube according to claim 1, characterized in that: The front and rear sides of the second servo motor (8) are fixedly connected to a fixing block (14), and the left and right sides of the top of the outer wall of the fixing block (14) are threadedly connected to screws (13).

4. The end shrinking machine of the alloy copper tube according to claim 1, characterized in that: A servo motor three (16) is fixedly connected to the right side of the top of the table top (1), and the output end of the servo motor three (16) is rotatably connected to a V-shaped rotating plate (15).

5. The end shrinking machine of the alloy copper tube according to claim 1, characterized in that: A material inlet cabin (17) is fixedly connected to the front right side of the table top (1), and an inclined slot (18) is provided on the rear right side of the table top (1).

6. The end shrinking machine of the alloy copper tube according to claim 1, characterized in that: An electric telescopic rod three (19) is fixedly connected to the middle portion of the right side of the table top (1), and a magnetic block (20) is fixedly connected to the other end of the electric telescopic rod three (19).

7. The end shrinking machine of the alloy copper tube according to claim 1, characterized in that: C-shaped blocks (21) are fixedly connected to the top and sides of the table top (1), and threaded nails (22) are threadedly connected to the bottom of the outer wall of the C-shaped block (21).

8. The end shrinking machine of the alloy copper tube according to claim 1, characterized in that: An L-shaped block (23) is fixedly connected to the rear side of the right portion of the table top (1); a sliding block (24) is slidably connected to the inner wall of the L-shaped block (23); and a threaded rod (25) is threadedly connected to the front sides of both the L-shaped block (23) and the sliding block (24).

9. The end shrinking machine of the alloy copper tube according to claim 1, characterized in that: The control method of the necking machine comprises the following steps: ① First, place the copper alloy tube in the middle of the table top (1). When the copper alloy tube is located at the bottom of the clamp block (4), the electric telescopic rod 1 (3) controls the clamp block (4) to clamp the copper alloy tube. At this time, the servo motor 2 (8) rotates, driving the threaded cover (7) to rotate, causing the shaping tube (6) to rotate and move to the right. ② When the copper alloy tube enters the inner wall of the shaping tube (6), the second electric telescopic rod (9) pushes the slider (10) to slide to the left and right on the shaping tube (6), forming a hollow sandwich with the inner wall of the shaping tube (6), thereby guiding the copper alloy tube to shrink; ③ After the shrinking is completed, the second electric telescopic rod (9) shrinks to the left, and the second return spring (12) pushes the gasket (11) to the left, so that the slider (10) is retracted to the middle of the inner wall along the slide groove of the shaping tube (6). Then, the second servo motor (8) rotates in the opposite direction, driving the threaded cover (7) to rotate, so that the shaping tube (6) rotates and moves to the left, allowing the copper alloy tube to escape from the shaping tube (6); ④ When the copper alloy tube passes through the inner wall of the second transmission gear (203), the servo motor (201) drives the first transmission gear (202) to operate, driving the second transmission gear (203) to rotate synchronously. When the second transmission gear (203) operates, the driving arm (204) rotates around the copper alloy tube, causing the sponge block (207) on the perforated rod (205) to contact the copper alloy tube, thereby starting initial lubrication; ⑤ When the copper alloy tube enters the shaping tube (6), the left side of the shaping tube (6) presses the perforated rod (205) to the left, so that the sponge block (207) fits the copper alloy tube more closely. At this time, the engine oil flows from the flat opening at the bottom end of the oil box (208) into the inner wall of the perforated rod (205) and is absorbed by the sponge block (207), thereby continuously providing lubrication for the copper alloy tube; ⑥ Subsequently, the shaping tube (6) moves to the left, and the copper alloy tube moves out from its inner wall to the right, and the return spring 1 (206) plays a role, so that the perforated rod (205) is reset and the copper alloy tube is released, thus completing the whole process of automatic lubrication of the wrap-around machine.

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