Port machining device for refrigeration copper pipe production

Abstract

The invention discloses an end opening machining device for refrigeration copper pipe production, relates to the technical field of copper pipe machining treatment, and aims at solving the problem that when a necking end and a flaring end are connected, a flowing resistance point appears at the connecting part, and then pressure drop is increased. Continuous shrinking and expanding machining of a refrigeration copper pipe is jointly achieved based on the combination of a composite dynamic shrinking and expanding assembly and a pushing spinning assembly, dynamic flaring is achieved through the combination of a multi-section type composite flaring die and a hydraulic servo system, the wrinkling and cracking phenomena in a traditional flaring process are avoided through precise control over pressure and displacement, spinning forming is combined with the shrinking process, and the production efficiency is improved. Radial pressure applied to a port of the refrigeration copper pipe is achieved by pushing the spinning assembly, and non-cutting machining is achieved. And under the combination of the two, continuous barrier-free type shrinkage-expansion machining in the refrigeration copper pipe port machining process is achieved, and the problem that the follow-up pressure drop is increased due to the fact that flow resistance points appear at the connecting positions is avoided through connection of dynamically-adjustable matched shrinkage-expansion ports of relevant parameters.

Description

Technical Field

[0001] The present invention relates to the technical field of copper pipe processing, and particularly relates to a port processing device for the production of refrigeration copper pipes. Background Art

[0002] In the field of refrigeration equipment manufacturing, as the core carrier of the refrigerant circulation system, the quality of the necking and flaring processing of the ports of copper pipes directly affects the pipeline sealing performance and heat exchange efficiency. On the one hand, it is to adapt to the connection requirements. Since the copper pipes in the refrigeration system often need to be connected to other components (aluminum pipes, valves or another copper pipe), after necking / flaring, the port diameter becomes smaller / larger, which is convenient for insertion or nested connection. Moreover, it can improve the sealing performance. The necking / flaring processing can also optimize the port shape and reduce the leakage risk. However, for high-precision refrigeration systems, the walls of their refrigeration copper pipes are thin and prone to deformation under excessive force. In the prior art, the necking process is used to complete the necking processing of the pipe orifice, and then non-cutting flaring is used to complete the flaring processing of the connecting piece. However, when the necking and flaring ends are connected, due to the difference in processing technology, it is extremely easy to cause a flow resistance point at the connection section, that is, the flow resistance of the refrigerator generates "turbulent flow" at the connection part between the necking end and the flaring end, resulting in an increase in pressure drop. For this reason, this application proposes a solution that can complete the processing of the ports of refrigeration copper pipes with dynamic matching of necking and flaring during the necking and flaring processing. Summary of the Invention

[0003] The purpose of the present invention is to provide a port processing device for the production of refrigeration copper pipes, which is used to solve the problem of the increase in pressure drop caused by the appearance of a flow resistance point at the connection part when the necking and flaring ends are connected.

[0004] The purpose of the present invention can be achieved by the following technical solutions: A port processing device for the production of refrigeration copper pipes includes a bottom plate and a bracket. At both ends of the bottom plate, there are respectively arranged a feeding and discharging mechanism for continuously loading and unloading the copper pipe to be processed and a composite dynamic necking and flaring assembly for necking and flaring the copper pipe to be processed. On the bracket, there are symmetrically arranged rotating seats rotatably installed. An adaptation groove for positioning the copper pipe to be processed is opened on the inner ring side of the rotating seat. The two adaptation grooves at the top are aligned with the feeding and loading mechanism and are used for continuously loading and unloading the copper pipe to be processed. The two adaptation grooves at the bottom are aligned with the composite dynamic necking and flaring assembly and are used for necking and flaring the copper pipe to be processed. The composite dynamic necking and flaring assembly includes a horizontally arranged hydraulic cylinder 1 and an inclined and rotatable oil cylinder. The output end of the oil cylinder is connected with a spinning block for dynamically necking the copper pipe to be processed through a swing frame. The output end of the hydraulic cylinder 1 is connected with a composite flaring die. The composite flaring die includes a continuously connected calibration section, a pre-flaring section and a forming section to realize the dynamic flaring of the copper pipe to be processed.

[0005] Further configured as: on both sides of the upper end of the bottom plate, a contraction-expansion box and a material pushing seat are respectively arranged. The composite dynamic contraction-expansion assembly is arranged in the contraction-expansion box, and a material pushing port aligned with the adaptation slot is opened on the inner ring side of the material pushing seat. The material pushing seat is provided with a propulsion spinning assembly through the material pushing port at the bottom.

[0006] Further configured as: the propulsion spinning assembly includes a horizontally arranged hydraulic cylinder II and a motor I. The motor I is arranged at the output end of the hydraulic cylinder II. The output end of the motor I is rotationally connected with a push column that is slidably connected with the material pushing seat. The inner end of the push column is connected with a material pushing support disc that matches the inner cavity of the copper tube to be processed.

[0007] Further configured as: the material pushing support disc includes a chuck and radial displacement claws that are adapted to the inner wall of the copper tube to be processed. The radial displacement claws move radially outside the chuck and are clamped with the inner wall of the copper tube to be processed.

[0008] Further configured as: a rotating support rod is installed in the middle of the swing frame, and a swing support rod is installed at the lower end of the swing frame. The output end of the oil cylinder is rotationally connected with the rotating support rod, and the bottom of the cylinder is rotationally connected with the contraction-expansion box. The swing support rod is rotationally connected with the contraction-expansion box.

[0009] Further configured as: the feeding and discharging mechanism includes a feeding cylinder arranged outside the material pushing port corresponding to the upper end of the material pushing seat. A hydraulic cylinder III is installed outside the feeding cylinder. The output end of the hydraulic cylinder III extends into the feeding cylinder and is installed with a push plate for horizontally feeding the copper tube to be processed.

[0010] Further configured as: a feeding concave wheel is rotatably installed above the feeding cylinder close to the material pushing seat. A friction strip for continuously feeding the copper tube to be processed is installed in the groove of the feeding concave wheel.

[0011] Further configured as: a connecting plate is commonly installed between the two material transfer seats. A driven gear ring is sleeved outside one of the material transfer seats. A motor II is installed on the bracket. The output end of the motor II is installed with a driving gear that meshes with the driven gear ring.

[0012] The present invention has the following beneficial effects: The present invention aims at the problem that when the necking and flaring ends are connected, a flow resistance point appears at the connection part, resulting in an increase in pressure drop. Based on the combination of a composite dynamic necking and flaring component and a propulsion spinning component, continuous necking and flaring processing of refrigeration copper tubes is realized. Among them, a multi-stage composite flaring die is combined with a hydraulic servo system to achieve dynamic flaring. Through precise control of pressure and displacement, the wrinkling and cracking phenomena in the traditional flaring process are avoided. Also, spinning forming is combined with the necking process, and a radial pressure is applied to the port of the refrigeration copper tube through the propulsion spinning component to achieve non-cutting processing. Under the combination of the two, continuous unobstructed necking and flaring processing during the port processing of refrigeration copper tubes is realized, and the function of dynamically adjustable relevant parameters avoids the problem that a flow resistance point appears at the connection part, resulting in an increase in subsequent pressure drop. During the necking process of the copper tube to be processed, the oil cylinder can adjust the position of the spinning block provided by the rotating support rod, and the basic turning is completed by the swinging support rod, so as to accurately adjust the spinning block and the necking diameter of the copper tube to be processed. Finally, a dynamic necking adjustment process according to the required necking diameter is realized. During the entire dynamic necking adjustment process, it can freely adapt to copper tubes with different wall thicknesses for processing, and greatly shorten the synchronous processing time of a large number of copper tubes, improving the port processing efficiency of refrigeration copper tubes. During the flaring process, a diameter measuring sensor is embedded in the calibration section, which can measure the inner diameter of the tube port inner wall after flaring, so as to judge whether the current flaring is accurate. For the necking and flaring processing of the port of the copper tube to be processed, a multi-stage composite flaring die is used to avoid the wrinkling and cracking phenomena that are prone to occur in the traditional flaring process through precise control of pressure and displacement. Therefore, combined with the content description in the above point 2, the problem that a flow resistance point appears at the connection part of the refrigeration copper tube, resulting in an increase in subsequent pressure drop and affecting the refrigeration effect, can be avoided. Brief Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a rear view structural schematic diagram of the present invention; Figure 3 It is an installation structural diagram of the composite dynamic necking and flaring component of the present invention; Figure 4 It is a structural diagram of the composite dynamic necking and flaring component of the present invention; Figure 5Schematic diagram of the docking of the composite dynamic expansion and contraction component of the present invention; Figure 6 Schematic structural diagram of the feeding and discharging mechanism of the present invention; Figure 7 Structural diagram of the feeding mechanism of the present invention; Figure 8 Front view of the feeding mechanism of the present invention; Figure 9 Schematic diagram of the feeding state of the present invention.

[0015] In the figure: 1, bottom plate; 2, support; 3, expansion and contraction box; 4, pushing seat; 5, feeding cylinder; 6, material turning seat; 7, copper pipe to be processed; 8, hydraulic cylinder 1; 9, connecting plate; 10, fitting groove; 11, calibration section; 12, pre-expansion section; 13, forming section; 14, diameter measuring sensor; 15, oil cylinder; 16, swing frame; 17, spinning block; 18, hydraulic cylinder 2; 19, motor 1; 20, pushing support disc; 21, pushing port; 22, pushing column; 23, swing support rod; 24, rotating support rod; 25, driven gear ring; 26, feeding cam; 27, friction strip; 28, hydraulic cylinder 3; 29, pushing plate. Specific embodiments

[0016] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0017] Embodiment 1: Aiming at the problem of the increase in pressure drop caused by the appearance of flow resistance points at the connection part when the necking and flaring ends are connected, the following technical solutions are proposed: Referring to Figures 1-9 As shown, in this embodiment, a port processing device for the production of refrigeration copper pipes includes a bottom plate 1 and a support 2. The two ends of the bottom plate 1 are respectively provided with a feeding and discharging mechanism for the continuous feeding and discharging of the copper pipe 7 to be processed and a composite dynamic expansion and contraction component for the expansion and contraction processing of the copper pipe 7 to be processed. The symmetrically arranged material turning seats 6 are rotatably installed on the support 2. The inner ring side of the material turning seat 6 is provided with a fitting groove 10 for positioning the copper pipe 7 to be processed, and the arc formed by the endpoints of the fitting groove 10 is a major arc. The two fitting grooves 10 at the top are aligned with the feeding and loading mechanism and are used for the continuous feeding and discharging of the copper pipe 7 to be processed. The two fitting grooves 10 at the bottom are aligned with the composite dynamic expansion and contraction component and are used for the expansion and contraction processing of the copper pipe 7 to be processed; Referring to Figure 3 、 Figure 4 and Figure 5As shown in the figure, the composite dynamic shrinking and expanding component includes a horizontally arranged hydraulic cylinder 1-8 and an inclined and rotatable oil cylinder 15. The output end of the oil cylinder 15 is connected with a spinning block 17 for dynamically shrinking the opening of the copper tube 7 to be processed through a swing frame 16. The output end of the hydraulic cylinder 1-8 is connected with a composite flaring die. The composite flaring die includes a continuously connected calibration section 11, a pre-flaring section 12 and a forming section 13 to realize the dynamic flaring of the copper tube 7 to be processed. A diameter measuring sensor is embedded in the calibration section, which can measure the inner diameter of the inner wall of the tube port after flaring, so as to judge whether the current flaring is accurate. For the flaring process of the port of the copper tube 7 to be processed, the hydraulic cylinder 1-8 drives the composite flaring die to press into the port of the copper tube 7 to be processed, and uses the pre-flaring section 12, the forming section 13 and the calibration section 11 to accurately flare the port. That is, by using a multi-section composite flaring die and precise control of pressure and displacement, the wrinkling and cracking phenomena easily occurring in the traditional flaring process can be avoided.

[0018] Referring to Figures 3-5 As shown in the figure, on both sides of the upper end of the bottom plate 1, a shrinking and expanding box 3 and a pushing seat 4 are respectively arranged. The composite dynamic shrinking and expanding component is arranged in the shrinking and expanding box 3. A pushing port 21 aligned with the fitting groove 10 is opened on the inner ring side of the pushing seat 4. A pushing and spinning component is arranged through the pushing port 21 at the bottom of the pushing seat 4. The pushing and spinning component includes a horizontally arranged hydraulic cylinder 2-18 and a motor 1-19. The motor 1-19 is arranged at the output end of the hydraulic cylinder 2-18. The output end of the motor 1-19 is rotationally connected with a push column 22 which is slidably connected with the pushing seat 4. The inner end of the push column 22 is connected with a pushing support disc 20 matching the inner cavity of the copper tube 7 to be processed. The pushing support disc 20 includes a chuck and radial displacement claws adapted to the inner wall of the copper tube 7 to be processed. The radial displacement claws move radially outside the chuck and are clamped with the inner wall of the copper tube 7 to be processed. After loading, immediately, the hydraulic cylinder 2-18 drives the pushing support disc 20 into the copper tube 7 to be processed through the push column 22, so that the radial displacement claws move outwards and are tightened. The motor 1-19 drives the current copper tube 7 to be processed to rotate. At the same time, the oil cylinder 15 drives the spinning block 17 to fit the outer wall of the copper tube 7 to be processed through the swing frame 16, and dynamically shrink the opening of the copper tube 7 to be processed according to the processing requirements. The key points are as follows: by dynamically adjusting the shrinking force, combining the spinning forming and the shrinking process, applying radial pressure to the port of the copper tube 7 to be processed through the spinning block to realize non-cutting processing. When the shrinking and flaring are carried out synchronously, targeted dynamic adjustment is carried out according to the connection part of the shrinking and flaring to avoid the problem of increased subsequent pressure drop caused by the appearance of flow resistance points at the connection part. Basic principle: During the process of necking and flaring the ports of refrigeration copper tubes in the present invention, continuous necking and flaring of refrigeration copper tubes are achieved by combining a composite dynamic necking and flaring component with a propulsion spinning component. Among them, a multi-stage composite flaring die is combined with a hydraulic servo system to achieve dynamic flaring. Through precise control of pressure and displacement, wrinkling and cracking phenomena in traditional flaring processes are avoided. Also, spinning forming is combined with necking technology, and a radial pressure is applied to the ports of refrigeration copper tubes through the propulsion spinning component to achieve non-cutting processing. Under the combination of the two, continuous and unobstructed necking and flaring processing during the port processing of refrigeration copper tubes is achieved, and relevant parameters are dynamically adjustable to match the connection of the necking and flaring, avoiding problems such as an increase in subsequent pressure drop caused by the emergence of flow resistance points at the connection part. Embodiment

[0019] Refer to Figures 1-9 As shown, a rotating support rod 24 is installed in the middle of a swing frame 16. A swing support rod 23 is installed at the lower end of the swing frame 16. The output end of an oil cylinder 15 is rotatably connected to the rotating support rod 24 and the bottom of the cylinder is rotatably connected to a necking and flaring box 3. The swing support rod 23 is rotatably connected to the necking and flaring box 3. During the necking process of a copper tube 7 to be processed, the specific process of the oil cylinder 15 completing dynamic necking through the swing frame 16 is as follows: The oil cylinder 15 can adjust the position of a spinning block 17 provided by the rotating support rod 24 and complete the basic turning by the swing support rod 23, so as to accurately adjust the necking diameter of the spinning block 17 and the copper tube 7 to be processed. Finally, a dynamic necking adjustment process according to the required necking diameter is realized. During the entire dynamic necking adjustment process, it can freely adapt to copper tubes with different wall thicknesses for processing, and greatly shorten the synchronous processing time of a large number of copper tubes, improving the port processing efficiency of refrigeration copper tubes; The feeding and discharging mechanism includes a feeding cylinder 5 arranged outside a feeding port 21 corresponding to the upper end of a pushing seat 4. A third hydraulic cylinder 28 is installed outside the feeding cylinder 5. The output end of the third hydraulic cylinder 28 extends into the feeding cylinder 5 and is installed with a pushing plate 29 for horizontally feeding the copper tube 7 to be processed. When discharging: When the refrigeration copper tube that has completed necking and flaring rotates to the top of the pushing seat 4, at this time, the pushing plate 29 is driven by the third hydraulic cylinder 28 to move horizontally, so as to push out the refrigeration copper tube that has completed necking and flaring, and continue to place the next copper tube 7 to be processed; Refer to Figure 1 、 Figure 6 、 Figure 7 and Figure 9As shown in the figure, a feed cam 26 is rotatably installed above the pusher seat 4 near the feed cylinder 5. A friction strip 27 for continuously feeding the copper tube 7 to be processed is installed in the groove of the feed cam 26. The above-mentioned push plate 29 and the feed cam 26 can jointly form a continuous and unobstructed loading and unloading of the copper tube 7 to be processed. The copper tube 7 to be processed is first obliquely conveyed by the feeding conveyor belt and then continuously fed and conveyed by the push plate 29. The conveying end of the feeding conveyor belt corresponds above the initial position of the push plate 29, and the distance between the conveying end of the feeding conveyor belt and the feed cylinder 5 exceeds the diameter of a single copper tube 7 to be processed. The feeding process here includes two stages, and the specific process is as follows: In the first stage, the copper tube 7 to be processed is obliquely conveyed by the feeding conveyor belt. When the end touches the position tangent to the feed cam 26, the copper tube 7 to be processed immediately detaches from the feeding conveyor belt and lands on the feed cylinder 5. In the second stage: The copper tube 7 on the feed cylinder 5 is friction-fed by the feed cam 26 and completes the feeding into the lower pusher seat 4. Subsequently, the hydraulic cylinder three 28 drives the push plate 29 to move horizontally to push the copper tube 7 to complete continuous feeding and fall into the transfer seat 6. Thus, the completion of the two stages realizes the unobstructed feeding of the continuously processed copper tube 7. After feeding, the copper tube 7 to be processed is displaced through the rotary structure, so as to continue the necking and flaring processing and blanking process of the port of the copper tube 7 to be processed; Therefore, two connecting plates 9 are jointly installed between the two transfer seats 6. A driven gear ring 25 is sleeved outside one of the transfer seats 6. A second motor is installed on the bracket 2, and a driving gear meshing with the driven gear ring 25 is installed at the output end of the second motor. The second motor drives the driven gear ring 25 to rotate through the driving gear, so that the transfer seat 6 generates a positioning rotation, rotates the copper tube 7 that has completed feeding to the necking and flaring station, and uses the propulsion and spinning assembly to complete the propulsion-spinning dynamic necking-composite flaring process; This embodiment combines with Embodiment 1. Through the continuous feeding rotary structure, it is ensured that the copper tube 7 to be processed can complete the continuous feeding, necking and flaring processing and blanking process. And during the synchronous necking and flaring processing of the copper tube 7 to be processed, the appearance of flow resistance points caused by the connection of the connecting parts can be avoided, thereby avoiding the problem of increased pressure drop at the connecting parts of the subsequent refrigeration copper tubes.

[0020] Embodiment 3: This embodiment combines Embodiment 1 and Embodiment 2 to form a port processing method for the production of refrigeration copper tubes, including the following steps: S1: First, the copper tube 7 to be processed is obliquely conveyed by the feeding conveyor belt. When the end touches the position tangent to the feed cam 26, the copper tube 7 to be processed immediately detaches from the feeding conveyor belt and lands on the feed cylinder 5. The copper tube 7 on the feed cylinder 5 is friction-fed by the feed cam 26 and completes the feeding into the pusher seat 4. Subsequently, the hydraulic cylinder three 28 drives the push plate 29 to move horizontally to push the copper tube 7 to complete continuous feeding and fall into the transfer seat 6; S2: The second motor drives the driven gear ring 25 to rotate through the driving gear, causing the rotating material seat 6 to perform positioning rotation, rotating the to-be-processed copper tube 7 that has completed feeding to the to-be-reduced and expanded station, and completing the process of pushing-spinning dynamic necking-composite flaring by using the pushing and spinning assembly; S3: Flaring. First, after the feeding of the to-be-processed copper tube 7 is completed, the hydraulic cylinder II 18 immediately drives the pushing support plate 20 into the to-be-processed copper tube 7 through the pushing column 22, causing the diameter-shifting claws to move outwards and tighten. The hydraulic cylinder I 8 drives the composite flaring die to press into the port of the to-be-processed copper tube 7, and uses the pre-flaring section 12, forming section 13 and calibration section 11 to accurately flare the port. Through the precise control of pressure and displacement, the wrinkling and cracking phenomena that are prone to occur in the traditional flaring process are avoided; Necking. The hydraulic cylinder II 18 drives the pushing support plate 20 into the to-be-processed copper tube 7 through the pushing column 22, causing the diameter-shifting claws to move outwards and tighten. The first motor 19 drives the current to-be-processed copper tube 7 to rotate. At the same time, the oil cylinder 15 drives the spinning block 17 through the swing frame 16 to fit the outer wall of the to-be-processed copper tube 7, and performs dynamic necking processing on the to-be-processed copper tube 7 according to the processing requirements; S4: When the refrigeration copper tube that has completed the reduction and expansion processing rotates back to the top of the pushing seat 4, at this time, the hydraulic cylinder III 28 drives the push plate 29 to move horizontally, thereby pushing out the refrigeration copper tube that has completed the reduction and expansion processing, and continuing to place the next to-be-processed copper tube 7.

[0021] In summary: Combining Embodiments 1, 2 and 3 of the present invention, a multi-stage composite flaring die is combined with a hydraulic servo system to achieve dynamic flaring. Through the precise control of pressure and displacement, the wrinkling and cracking phenomena in the traditional flaring process are avoided. Also, spinning forming is combined with the necking process, and the radial pressure applied to the port of the refrigeration copper tube is achieved through the pushing and spinning assembly, realizing non-cutting processing; Under the combination of the two, continuous unobstructed reduction and expansion processing in the process of processing the port of the refrigeration copper tube is achieved, and the relevant parameters are dynamically adjustable to match the connection of the reduction and expansion ports, avoiding the problem of increased subsequent pressure drop caused by the appearance of flow resistance points at the connection part; And it can ensure that the to-be-processed copper tube 7 can complete the processes of continuous feeding, reduction and expansion processing, and blanking through a continuously feeding rotary structure. Moreover, during the synchronous reduction and expansion processing of the to-be-processed copper tube 7, the displacement amount and reduction and expansion parameters in the processes of feeding, reduction and expansion processing, and blanking can be accurately controlled.

[0022] The above content is only an example and description of the structure of the present invention. Those skilled in the art of this technology make various modifications or supplements to the described specific embodiments or use similar methods to replace them. As long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they should all belong to the protection scope of the present invention.

[0023] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0024] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific embodiments. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A port processing device for the production of refrigeration copper pipes, characterized in that: It includes a bottom plate (1) and a bracket (2). At both ends of the bottom plate (1), there are respectively a feeding and discharging mechanism for continuously loading and unloading the copper pipe to be processed (7) and a composite dynamic shrinking and expanding assembly for shrinking and expanding the copper pipe to be processed (7). On the bracket (2), there are symmetrically arranged rotating material seats (6) rotatably installed. An adaptation groove (10) for positioning the copper pipe to be processed (7) is provided on the inner ring side of the rotating material seat (6). The two adaptation grooves (10) at the top are aligned with the feeding and loading mechanism and are used for continuously loading and unloading the copper pipe to be processed (7). The two adaptation grooves (10) at the bottom are aligned with the composite dynamic shrinking and expanding assembly and are used for shrinking and expanding the copper pipe to be processed (7). The composite dynamic shrinking and expanding assembly includes a horizontally arranged hydraulic cylinder I (8) and an inclined and rotatable oil cylinder (15). The output end of the oil cylinder (15) is connected with a spinning block (17) for dynamically shrinking the mouth of the copper pipe to be processed (7) through a swing frame (16). The output end of the hydraulic cylinder I (8) is connected with a composite flaring die. The composite flaring die includes a continuously connected calibration section (11), a pre-flaring section (12) and a forming section (13) to realize the dynamic flaring of the copper pipe to be processed (7).

2. The port processing device for the production of refrigeration copper tubes according to claim 1, wherein, On both sides of the upper end of the bottom plate (1), there are respectively a shrinking and expanding box (3) and a pushing seat (4). The composite dynamic shrinking and expanding assembly is arranged in the shrinking and expanding box (3). A pushing port (21) aligned with the adaptation groove (10) is provided on the inner ring side of the pushing seat (4). The pushing seat (4) is provided with a pushing and spinning assembly through the bottom pushing port (21).

3. The port processing device for the production of refrigeration copper tubes according to claim 2, characterized in that, The pushing and spinning assembly includes a horizontally arranged hydraulic cylinder II (18) and a motor I (19). The motor I (19) is arranged at the output end of the hydraulic cylinder II (18). The output end of the motor I (19) is rotatably connected with a pushing column (22) slidably connected with the pushing seat (4). The inner end of the pushing column (22) is connected with a pushing support disc (20) matching the inner cavity of the copper pipe to be processed (7).

4. The port processing device for the production of refrigeration copper tubes according to claim 3, wherein, The pushing support disc (20) includes a chuck adapted to the inner wall of the copper pipe to be processed (7) and a radially moving claw. The radially moving claw moves radially outside the chuck and clamps the inner wall of the copper pipe to be processed (7).

5. The port processing device for refrigeration copper tube production according to claim 2, characterized in that, A rotating support rod (24) is installed in the middle of the swing frame (16). A swing support rod (23) is installed at the lower end of the swing frame (16). The output end of the oil cylinder (15) is rotatably connected with the rotating support rod (24) and the cylinder bottom is rotatably connected with the shrinking and expanding box (3). The swing support rod (23) is rotatably connected with the shrinking and expanding box (3).

6. The port processing device for the production of refrigeration copper tubes according to claim 2, characterized in that, The feeding and discharging mechanism includes a feeding cylinder (5) arranged outside the pushing port (21) corresponding to the upper end of the pushing seat (4). A hydraulic cylinder III (28) is installed outside the feeding cylinder (5). The output end of the hydraulic cylinder III (28) extends into the feeding cylinder (5) and is installed with a pushing plate (29) for horizontally feeding the copper pipe to be processed (7).

7. The port processing device for refrigeration copper tube production according to claim 6, wherein A feeding cam (26) is rotatably installed above the feeding cylinder (5) close to the pushing seat (4). A friction strip (27) for continuously feeding the copper pipe to be processed (7) is installed in the groove of the feeding cam (26).

8. A port processing device for the production of refrigeration copper tubes according to claim 1, characterized in that, A connecting plate (9) is jointly installed between the two material transfer seats (6). A driven gear ring (25) is sleeved outside one of the material transfer seats (6). A second motor is installed on the bracket (2), and a driving gear meshing with the driven gear ring (25) is installed at the output end of the second motor.

9. A port processing device for the production of refrigeration copper tubes according to any one of claims 1-8, characterized in that, A port processing method for refrigeration copper tube production using this device includes the following steps: S1: First, the copper tube to be processed (7) is obliquely conveyed by a feeding conveyor belt. When the end touches the position tangent to the feeding cam (26), the copper tube to be processed (7) immediately disengages from the feeding conveyor belt and falls onto the feeding cylinder (5). The copper tube to be processed (7) undergoes frictional feeding by the feeding cam (26) on the feeding cylinder (5) to complete feeding into the pusher seat (4). Subsequently, the hydraulic cylinder three (28) drives the push plate (29) to move horizontally to push the copper tube to be processed (7) to complete continuous feeding and fall into the material transfer seat (6); S2: The second motor drives the driven gear ring 25 to rotate through the driving gear, causing the material transfer seat (6) to perform positioning rotation, rotating the copper tube to be processed (7) that has completed feeding to the station for necking and expanding, and using the pushing and spinning assembly to complete the process of pushing-spinning dynamic necking - composite flaring; S3: Flaring. First, after the feeding of the copper tube to be processed (7) is completed, the hydraulic cylinder two (18) immediately drives the pushing support plate (20) into the copper tube to be processed (7) through the push column (22), causing the diameter displacement claws to move outwards and tighten. The hydraulic cylinder one (8) drives the composite flaring die to press into the port of the copper tube to be processed (7), and uses the pre-flaring section (12), forming section (13), and calibration section (11) to accurately flare the port. Through the precise control of pressure and displacement, the phenomena of wrinkling and cracking that are prone to occur in the traditional flaring process are avoided; Necking. The hydraulic cylinder two (18) drives the pushing support plate (20) into the copper tube to be processed (7) through the push column (22), causing the diameter displacement claws to move outwards and tighten. The first motor (19) drives the current copper tube to be processed (7) to rotate. At the same time, the oil cylinder (15) drives the spinning block (17) to fit the outer wall of the copper tube to be processed (7) through the swing frame (16), and performs dynamic necking processing on the copper tube to be processed (7) according to the processing requirements; S4: When the refrigeration copper tube that has completed necking and expanding rotates back to the top of the pusher seat (4), at this time, the hydraulic cylinder three (28) drives the push plate (29) to move horizontally, thereby pushing out the refrigeration copper tube that has completed necking and expanding, and continuing to place the next copper tube to be processed (7).

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