Ultrafine internal thread copper pipe stretching forming device

Abstract

The utility model relates to the technical field of superfine internal thread copper pipe processing, in particular to a superfine internal thread copper pipe stretching forming device, which comprises a main body support frame, a main body support frame and a stretching forming device, the extending guide rail frame is fixedly connected with the main body supporting frame, and a plurality of transverse rods are evenly arranged on the extending guide rail frame; the stretching air cylinder is fixedly mounted on the main body supporting frame; four rolling wheels are arranged on the movable frame, and the movable frame is horizontally and movably arranged on the main body supporting frame through the rolling wheels and is driven by a stretching air cylinder to move; the adjusting support is arranged on the moving frame, and a pipe fitting clamping assembly is arranged on the adjusting support; the copper pipe fixing mechanism is horizontally and movably arranged on the extending guide rail frame; the material storage mechanism is arranged on the ground in a supporting manner, and the material storage mechanism is used for providing a raw material pipe to be stretched; the copper pipe fixing mechanism comprises a pipe end fixing frame, four rolling wheels are arranged on the pipe end fixing frame, and the pipe end fixing frame is horizontally and movably arranged on the extending guide rail frame through the rolling wheels.

Description

Technical Field

[0001] This utility model relates to the technical field of processing ultra-fine internal thread copper tubes, and in particular to a stretching and forming device for ultra-fine internal thread copper tubes. Background Technology

[0002] In modern industrial fields such as refrigeration equipment and air conditioning systems, ultra-fine internally threaded copper tubes, due to their high-efficiency heat exchange performance, can significantly improve the cooling or heating efficiency of equipment and are widely used in the manufacture of key components such as evaporators and condensers. With the development of industrial technology, the requirements for the precision, surface quality, and production efficiency of ultra-fine internally threaded copper tubes are constantly increasing, and traditional copper tube stretching and forming technology is gradually revealing many limitations.

[0003] Existing copper tube stretching and forming equipment has certain structural design flaws. The equipment has a low level of automation, requiring frequent manual intervention during the stretching process, which not only increases labor intensity but also reduces production efficiency, failing to meet the demands of large-scale industrial production. Furthermore, traditional stretching equipment has limited adjustment functions, making it difficult to adapt to the stretching of copper tubes of different specifications and with varying process requirements, resulting in poor versatility and flexibility. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an ultra-fine internal thread copper tube stretching and forming device that can improve the stretching stability and accuracy of copper tubes, enhance the degree of automation and production efficiency, and increase the versatility and flexibility of the equipment.

[0005] This utility model discloses an ultra-fine internal thread copper tube stretching and forming device, comprising:

[0006] The main support frame is installed on the ground.

[0007] The extension guide rail is fixedly connected to the main support frame, and multiple crossbars are evenly arranged on the extension guide rail.

[0008] The tension cylinder is fixedly installed on the main support frame;

[0009] The movable frame is equipped with four rollers. The movable frame is horizontally mounted on the main support frame via the rollers and is moved by a tension cylinder.

[0010] An adjusting support is mounted on a movable frame, and a pipe clamping assembly is provided on the adjusting support.

[0011] The copper tube fixing mechanism is horizontally mounted on the extension guide rail frame;

[0012] The material storage mechanism is supported on the ground and is used to provide the raw material tube to be stretched.

[0013] The copper tube fixing mechanism includes:

[0014] The pipe end fixing bracket is equipped with four rollers. The pipe end fixing bracket is horizontally mounted on the extension guide rail frame via the rollers. The pipe end fixing bracket is equipped with a pipe clamping assembly.

[0015] The hinged seat is fixedly installed on the side wall of the pipe end fixing bracket.

[0016] The adjusting cylinder is mounted on the hinged seat.

[0017] Hook plate, the hook plate is oscillatingly installed inside the pipe end fixing frame, the hook plate is used to hook the crossbar on the extension guide frame;

[0018] The hinge plate is oscillatingly mounted on the hook plate and is hinged to the output end of the regulating cylinder.

[0019] In a preferred embodiment of this utility model, an adjusting pin is rotatably mounted on the movable frame. The adjusting pin is rotatably engaged with the adjusting support. The adjusting pin is used to drive the adjusting support to slide horizontally on the movable frame. A fixing nut is fixedly installed in the movable frame. The end of the adjusting pin is threaded into the fixing nut. A worm gear sleeve is fixedly mounted on the adjusting pin. A worm is rotatably mounted in the movable frame. The worm meshes with the worm gear sleeve. The worm is driven by a motor.

[0020] As a preferred embodiment of this utility model, the pipe clamping assembly includes:

[0021] The clamping plate is fixedly connected to the adjusting support and the pipe end fixing bracket.

[0022] Threaded support, the threaded support is fixedly installed on the clamping support plate;

[0023] The screw is threadedly inserted into the threaded support.

[0024] The upper pressure block is slidably mounted on the clamping support plate and is driven to slide up and down by a screw.

[0025] The corner bracket is fixedly installed on the clamping support plate, and the corner bracket cooperates with the upper pressure block to clamp the pipe fitting.

[0026] As a preferred embodiment of this utility model, both the upper pressure block and the corner bracket clamping end are provided with anti-slip protrusions.

[0027] As a preferred embodiment of this utility model, a screw top is provided with a screw-twisting handle.

[0028] As a preferred embodiment of this utility model, the material storage mechanism includes:

[0029] The storage bin has legs at the bottom and is supported on the ground. The storage bin has a storage cavity inside and a material outlet on the bottom plate at the side.

[0030] Multiple guide plates are arranged in a crisscross pattern inside the storage bin.

[0031] As a preferred embodiment of this utility model, two baffles are provided at the material outlet of the storage box to restrict the copper tube raw material from continuing to roll, so that only one copper tube raw material is always outside the storage box at the material outlet.

[0032] As a preferred embodiment of this utility model, a transparent observation window is provided on the storage bin.

[0033] Compared with the prior art, the beneficial effects of this utility model are as follows: This device achieves copper tube stretching by driving the moving frame to move through a stretching cylinder, and the copper tube fixing mechanism automatically controls the hooking and unhooking of the hook plate and the crossbar through an adjusting cylinder, realizing a high degree of automation in the stretching process; compared with traditional stretching equipment that requires frequent manual intervention, it greatly reduces manual operation links and reduces labor intensity; the increased degree of automation makes the production process more continuous and efficient, reduces time delays and errors caused by manual operation, and thus significantly improves production efficiency, meeting the needs of large-scale industrial production; the evenly arranged crossbars on the extension guide frame and the horizontally movable copper tube fixing mechanism, combined with the flexible position adjustment achieved by the adjusting cylinder, enable the device to adapt to ultra-fine internal thread copper tubes of different lengths and different stretching process requirements; by adjusting the position of the copper tube fixing mechanism on the extension guide frame and the different hook crossbars, the stretching stroke and force parameters can be changed, effectively solving the problem of limited adjustment function of traditional stretching equipment, and significantly enhancing the versatility and flexibility of the equipment. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 This is a cross-sectional structural diagram of the copper tube fixing mechanism;

[0036] Figure 3 This is a cross-sectional view of the mobile frame.

[0037] Figure 4 This is a schematic diagram of the installation structure of the adjusting pin.

[0038] Figure 5 This is an enlarged structural schematic diagram of the pipe clamping assembly;

[0039] Figure 6 This is a cross-sectional structural diagram of the material storage mechanism;

[0040] The attached diagram is labeled as follows: 1. Main support frame; 11. Extension guide rail frame; 12. Tension cylinder; 13. Moving frame; 14. Adjusting support; 1a. Adjusting pin; 1b. Fixing nut; 1c. Worm gear sleeve; 1d. Worm; 2. Copper pipe fixing mechanism; 21. Pipe end fixing frame; 22. Hinge seat; 23. Adjusting cylinder; 24. Hook plate; 25. Hinge piece; 3. Material storage mechanism; 31. Material storage box; 32. Guide plate; 33. Baffle; 41. Clamping support plate; 42. Threaded support; 43. Screw; 44. Upper pressure block; 45. Corner bracket. Detailed Implementation

[0041] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0042] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] Reference Figures 1-6 This embodiment provides an ultra-fine internal thread copper tube stretching and forming apparatus, comprising:

[0044] Main support frame 1, which is supported and installed on the ground;

[0045] The extension guide frame 11 is fixedly connected to the main support frame 1, and multiple crossbars are evenly arranged on the extension guide frame 11.

[0046] The tension cylinder 12 is fixedly installed on the main support frame 1;

[0047] The movable frame 13 is equipped with four rollers. The movable frame 13 is horizontally mounted on the main support frame 1 via the rollers and is driven to move by the tension cylinder 12.

[0048] Adjustable support 14 is mounted on movable frame 13, and pipe clamping assembly is mounted on adjustable support 14;

[0049] The copper pipe fixing mechanism 2 is horizontally movable and mounted on the extension guide rail frame 11;

[0050] The material storage mechanism 3 is supported on the ground and is used to provide the raw material tube to be stretched.

[0051] The copper tube fixing mechanism 2 includes:

[0052] Pipe end fixing bracket 21, four rollers are provided on the pipe end fixing bracket 21, the pipe end fixing bracket 21 is horizontally moved on the extension guide rail 11 by the rollers, and a pipe clamping assembly is provided on the pipe end fixing bracket 21.

[0053] The hinge seat 22 is fixedly installed on the side wall of the pipe end fixing bracket 21;

[0054] Adjusting cylinder 23 is oscillatingly mounted on hinge seat 22;

[0055] Hook plate 24 is oscillatingly installed inside pipe end fixing frame 21. Hook plate 24 is used to hook the crossbar on extension guide frame 11.

[0056] The hinge plate 25 is oscillatingly mounted on the hook plate 24 and is hinged to the output end of the adjusting cylinder 23.

[0057] In this embodiment, the storage mechanism 3 stores a large number of raw material tubes to be stretched. At the start of production, the operator or automated equipment takes out the raw material tubes from the storage mechanism 3, preparing to install them onto the stretching forming device for processing. One end of the raw material tube is placed in the tube clamping assembly of the adjusting support 14 on the moving frame 13, and the tube is clamped and fixed by the assembly. At the same time, the other end of the raw material tube is placed in the tube clamping assembly of the tube end fixing bracket 21 of the copper tube fixing mechanism 2, and the other end of the raw material tube is clamped and fixed by the assembly. At this time, both ends of the copper tube are firmly fixed, preparing for subsequent stretching. Preparation; the stretching cylinder 12 is activated, pushing the moving frame 13 to move horizontally on the main support frame 1 via its four rollers; since one end of the raw material pipe is fixed to the moving frame 13 and the other end is fixed to the copper pipe fixing mechanism 2, as the moving frame 13 moves, the raw material pipe is subjected to a tensile force and begins to be stretched; the hook plate 24 of the copper pipe fixing mechanism 2 is hooked onto a crossbar of the extension guide frame 11, fixing the copper pipe fixing mechanism 2; when it is necessary to process copper pipes of different lengths, the adjusting cylinder 23 is activated, and its output end drives the hook plate 24 to swing through the hinge plate 25, so that the hook plate 24 moves from the current position... The copper tube is disengaged from the crossbar; the position of the fixing mechanism 2 is adjusted so that the hook plate 24 is hooked onto a crossbar of the extension guide frame 11; the device achieves copper tube stretching by driving the moving frame 13 to move through the stretching cylinder 12, and the copper tube fixing mechanism 2 automatically controls the hooking and disengaging of the hook plate 24 from the crossbar through the adjusting cylinder 23, realizing a high degree of automation in the stretching process; compared with traditional stretching equipment that requires frequent manual intervention, it greatly reduces manual operation links and reduces labor intensity; the increased degree of automation makes the production process more continuous and efficient, reducing time delays caused by manual operation. The device significantly improves production efficiency by reducing errors and can meet the needs of large-scale industrial production. The evenly arranged crossbars on the extension guide frame 11 and the horizontally movable copper tube fixing mechanism 2, together with the adjusting cylinder 23, enable flexible position adjustment, allowing the device to adapt to ultra-fine internal thread copper tubes of different lengths and with different stretching process requirements. By adjusting the position of the copper tube fixing mechanism 2 on the extension guide frame 11 and the different hooks on the crossbars, the stretching stroke and force parameters can be changed, effectively solving the problem of limited adjustment function of traditional stretching equipment and significantly enhancing the versatility and flexibility of the equipment.

[0058] As a preferred embodiment of the above technical solution, such as Figures 3 to 4As shown, an adjusting pin 1a is rotatably mounted on the movable frame 13. The adjusting pin 1a is rotatably engaged with the adjusting support 14. The adjusting pin 1a is used to drive the adjusting support 14 to slide horizontally on the movable frame 13. A fixing nut 1b is fixedly installed in the movable frame 13. The end of the adjusting pin 1a is threaded into the fixing nut 1b. A worm gear sleeve 1c is fixedly mounted on the adjusting pin 1a. A worm 1d is rotatably mounted in the movable frame 13. The worm 1d meshes with the worm gear sleeve 1c. The worm 1d is driven by a motor.

[0059] In this embodiment, when the position of the adjusting support 14 on the moving frame 13 needs to be adjusted, the motor starts, driving the worm gear 1d to rotate. Since the worm gear 1d meshes with the worm wheel sleeve 1c fixedly mounted on the adjusting pin 1a, according to the transmission principle of the worm wheel and worm, the rotation of the worm gear 1d will drive the worm wheel sleeve 1c to rotate, thereby causing the adjusting pin 1a to rotate on the moving frame 13. The end of the adjusting pin 1a is threaded into the fixing nut 1b fixedly installed in the moving frame 13, forming a screw-nut transmission structure. When the adjusting pin 1a rotates, since the fixing nut 1b remains stationary, according to the transmission characteristics of the screw-nut, the adjusting pin 1a will move axially along its axis. Simultaneously, the adjusting pin 1a rotates with the adjusting support 14, and the axial movement of the adjusting pin 1a will cause the adjusting support 14 to slide horizontally on the moving frame 13, thereby achieving precise adjustment of the position of the adjusting support 14. The screw-nut transmission structure composed of shaft 1a and fixed nut 1b has high transmission accuracy, which can accurately convert the rotational motion of the motor into the horizontal linear motion of the adjusting support 14. By precisely controlling the rotation angle and number of rotations of the motor, the position of the adjusting support 14 can be finely adjusted to meet the precise requirements of clamping positions for copper tubes of different specifications during the stretching and forming process of ultra-fine internal thread copper tubes, ensuring that the copper tube is subjected to uniform force during stretching, improving stretching accuracy and product quality. When producing ultra-fine internal thread copper tubes of different specifications, the position of the adjusting support 14 needs to be adjusted to adapt to the clamping requirements of copper tubes of different diameters. By driving the worm gear 1d with the motor to rotate the adjusting pin shaft 1a, the position of the adjusting support 14 can be flexibly adjusted, making the device easy to adapt to the production of copper tubes of different specifications, improving the versatility of the equipment, and reducing the time and cost of changing equipment or conducting a lot of debugging due to the production of different specifications of products.

[0060] Specifically, such as Figure 5 As shown, the pipe clamping assembly includes:

[0061] Clamping support plate 41 is fixedly connected to adjusting support 14 and pipe end fixing bracket 21;

[0062] Threaded support 42 is fixedly installed on clamping support plate 41;

[0063] Screw 43 is threadedly inserted into threaded support 42;

[0064] The upper pressure block 44 is slidably mounted on the clamping support plate 41 and is driven to slide up and down by the screw 43.

[0065] Corner bracket 45 is fixedly installed on clamping support plate 41. Corner bracket 45 cooperates with upper pressure block 44 to clamp pipe fittings.

[0066] In this embodiment, the operator places the copper tube material to be stretched at the pipe clamping assembly, with one end of the copper tube material resting on the corner bracket 45. The corner bracket 45 provides initial support for the copper tube, ensuring its stable position during clamping. The operator rotates the screw 43. Since the screw 43 is threaded into the threaded support 42 fixedly installed on the clamping support plate 41, according to the screw-nut transmission principle, when the screw 43 rotates, it will move axially along its axis. The upper pressure block 44 is slidably mounted on the clamping support plate 41 and cooperates with the screw 43. Therefore, the axial movement of the screw 43 will drive the upper pressure block 44 to move downward. As the upper pressure block 44 moves downward, it gradually approaches the copper tube material placed on the corner bracket 45. Finally, the upper pressure block 44 and the corner bracket 45 are tightly engaged, firmly clamping the copper tube material. During the process, the copper tube is stably fixed in the pipe clamping assembly, preparing it for subsequent stretching operations. Clamping is achieved by rotating the screw 43 to move the upper pressure block 44. Operators can precisely control the number of rotations of the screw 43 according to the specifications, material, and stretching process requirements of the copper tube, thereby adjusting the clamping force of the upper pressure block 44 on the copper tube, ensuring the stability of the stretching process and the quality of the copper tube. The clamping support plate 41 is fixedly connected to the adjusting support 14 and the pipe end fixing bracket 21, providing a stable support foundation for the entire pipe clamping assembly. Simultaneously, the corner bracket 45 is fixedly installed on the clamping support plate 41, forming a stable clamping structure with the upper pressure block 44. This structure can withstand the large tensile force on the copper tube during stretching, ensuring that the clamping assembly will not deform or be damaged during long-term, high-intensity stretching operations, thus improving the reliability and service life of the equipment.

[0067] More specifically, such as Figure 5 As shown, both the upper pressure block 44 and the corner bracket 45 are provided with anti-slip protrusions at their clamping ends;

[0068] In this embodiment, the anti-slip protrusions increase the friction between the clamping ends of the upper pressure block 44 and the corner bracket 45 and the surface of the copper tube. During the stretching process, the copper tube will be subjected to a large tensile force. If there is not enough friction, the copper tube can easily slide between the upper pressure block 44 and the corner bracket 45, resulting in stretching failure or deformation of the copper tube. The anti-slip protrusions, by embedding themselves into the surface of the copper tube, effectively prevent the copper tube from sliding, ensuring the stability and reliability of the stretching process. During the stretching process, the copper tube may be affected by various external forces, such as equipment vibration and uneven distribution of tensile force. These factors may cause the copper tube to shift at the clamping part. The anti-slip protrusions can firmly grip the surface of the copper tube, preventing the copper tube from undergoing slight displacement in the horizontal or vertical direction, thus ensuring the accuracy and quality of the stretching.

[0069] Furthermore, such as Figure 5 As shown, a screw 43 is provided with a screwing handle at its top end;

[0070] In this embodiment, the rotating handle provides an operating point, allowing the operator to manually rotate the screw 43. Compared to directly rotating the screw 43 by hand, the rotating handle increases the torque, enabling the operator to easily rotate the screw 43 with less force, thus completing the clamping and loosening of the copper tube more effortlessly and improving work efficiency. The operator can precisely control the rotation angle and force of the rotating handle to precisely adjust the number of rotations and axial movement distance of the screw 43, thereby precisely controlling the movement of the upper pressure block 44, achieving precise control of the clamping force on the copper tube, and ensuring that the copper tube will not slip due to insufficient clamping force or be damaged due to excessive clamping force during the stretching process.

[0071] Furthermore, such as Figure 6 As shown, the storage mechanism 3 includes:

[0072] The storage bin 31 has a support leg at the bottom and is supported on the ground by the support leg. The storage bin 31 has a storage cavity inside and a material outlet on the bottom plate at the side end.

[0073] Multiple guide plates 32 are arranged in a cross pattern inside the storage box 31. Each set of cross-arranged guide plates 32 provides a directional rolling path for the copper tube raw material, so that the copper tube raw material can roll in an orderly manner toward the outlet of the storage box 31 without causing the copper tube raw material to become disordered, achieving the effect of taking one and replenishing one at a time.

[0074] In this embodiment, the raw material tube, influenced by its own weight and the inclined surface of the guide plate 32, rolls along the directional rolling path formed by the guide plate 32 in the storage box 31. Each guide plate 32 guides the rolling direction of the raw material tube, allowing it to move orderly along a predetermined trajectory. The raw material tube rolls along the guide plate 32, gradually moving towards the material outlet of the bottom plate on the side of the storage box 31. When a raw material tube at the outlet is taken, the subsequent raw material tubes continue to roll along the guide plate 32, replenishing the outlet position sequentially, achieving a "take one, replenish one" effect. This ensures that the storage mechanism 3 can continuously provide raw material tubes for the subsequent stretching and forming device. The crisscrossed guide plates 32 allow the raw material tubes to roll orderly towards the outlet. When one raw material tube is taken out, the subsequent raw material tubes can be replenished in time, ensuring that the storage mechanism 3 always has raw material tubes available for the stretching and forming device. This avoids production stoppages due to raw material supply interruptions, improving production continuity and stability. In traditional feeding methods, frequent equipment stoppages may occur due to chaotic raw materials or difficulty in quickly obtaining them. The machine awaits replenishment of raw materials; the orderly feeding function of the storage mechanism 3 greatly reduces the downtime of the equipment due to raw material problems, and improves the utilization rate and production efficiency of the equipment; multiple guide plates 32 rationally divide the space inside the storage box 31, so that the raw material tubes will not be stacked randomly during storage, but will be arranged in an orderly manner according to certain rules; this not only facilitates the inventory and management of raw materials, but also reduces surface damage caused by mutual squeezing and collision of raw materials, and ensures the quality of raw material tubes; the cross-arranged guide plate 32 design can accommodate more raw material tubes in a limited space, improve the space utilization rate of the storage box 31, and enable more raw materials to be stored in the same area, reducing the occupation cost of the production site; it realizes the automatic replenishment function of "one to replenish one", and the operator does not need to frequently enter the storage box 31 to manually sort and replenish the raw material tubes, but only needs to replenish the raw materials in the storage box 31 in batches when the raw materials are insufficient; this greatly reduces the labor intensity of the operator, allowing the operator to devote more energy to the key aspects of equipment operation and monitoring.

[0075] Furthermore, such as Figure 6 As shown, two baffles 33 are provided at the material outlet of the storage bin 31 to restrict the copper tube raw material from continuing to roll, so that there is always only one copper tube raw material outside the storage bin 31 at the material outlet.

[0076] In this embodiment, by setting two baffles 33, it is ensured that there is always only one copper tube raw material at the material outlet, providing a precise material picking position for the material picking device. The material picking device does not need to locate and grab among many messy raw materials, but only needs to operate on the single raw material at the outlet, which greatly improves the accuracy and success rate of material picking and reduces production delays and raw material waste caused by material picking errors. It avoids the mutual interference and jamming problems that may occur when multiple raw materials are at the outlet at the same time, making the material picking process more stable and smooth, and improving the reliability and stability of the entire production process. Without the restriction of the baffles 33, multiple copper tube raw materials may roll out from the material outlet at the same time, causing raw materials to scatter around the equipment, which will not only cause chaos on the production site, but also may cause safety hazards, such as workers tripping over the scattered raw materials. The setting of the baffles 33 effectively prevents this from happening and ensures the safety of the production site.

[0077] Furthermore, such as Figure 6 As shown, a transparent observation window is provided on the storage bin 31;

[0078] In this embodiment, the operator can promptly understand the remaining status of raw materials in the storage bin 31 through the transparent observation window, and quickly replenish the raw materials when they are about to run out, avoiding production interruptions caused by raw material shortages, ensuring the continuity of the production process, and thus improving overall production efficiency. When abnormal storage status of raw materials in the storage bin 31 or abnormal operation of equipment parts is found, the operator can take measures immediately, such as adjusting the placement of raw materials, repairing or replacing damaged parts, etc., reducing production delays caused by untimely handling of abnormal situations, and further improving production efficiency.

[0079] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An apparatus for stretch forming a super-fine internal thread copper tube, characterized by, include: The main support frame is installed on the ground. An extension guide rail frame is fixedly connected to the main support frame, and multiple crossbars are evenly arranged on the extension guide rail frame; A tension cylinder is fixedly installed on the main support frame; A movable frame is provided with four rollers. The movable frame is horizontally mounted on the main support frame via the rollers and is driven to move by the tension cylinder. An adjusting support is provided on the movable frame, and a pipe clamping assembly is provided on the adjusting support; The copper tube fixing mechanism is horizontally movable and mounted on the extension guide rail frame; A material storage mechanism, which is supported on the ground, is used to provide the raw material tube to be stretched; The copper tube fixing mechanism includes: A pipe end fixing bracket is provided with four rollers. The pipe end fixing bracket is horizontally movable on the extension guide frame via the rollers. A pipe clamping assembly is provided on the pipe end fixing bracket. A hinged seat is fixedly installed on the side wall of the pipe end fixing frame; An adjusting cylinder is oscillatingly mounted on the hinge seat; A hook plate is oscillatingly installed inside the pipe end fixing frame, and the hook plate is used to hook the crossbar on the extension guide frame; A hinge plate is oscillatingly mounted on the hook plate and hinged to the output end of the adjusting cylinder.

2. The ultra-fine internal thread copper tube stretching and forming device as described in claim 1, characterized in that, An adjusting pin is rotatably mounted on the movable frame. The adjusting pin is rotatably engaged with the adjusting support. The adjusting pin is used to drive the adjusting support to slide horizontally on the movable frame. A fixing nut is fixedly installed in the movable frame. The end of the adjusting pin is threaded into the fixing nut. A worm gear sleeve is fixedly mounted on the adjusting pin. A worm is rotatably mounted in the movable frame. The worm meshes with the worm gear sleeve. The worm is driven by a motor.

3. A device for stretch forming a super-fine internal thread copper tube as set forth in claim 1, wherein The pipe clamping assembly includes: A clamping support plate is fixedly connected to the adjusting support and the pipe end fixing frame; A threaded support, which is fixedly mounted on the clamping support plate; The screw is threadedly inserted into the threaded support; The upper pressure block is slidably mounted on the clamping support plate and is driven to slide up and down by the screw. A corner bracket is fixedly installed on the clamping support plate, and the corner bracket cooperates with the upper pressure block to clamp the pipe fitting.

4. A device for stretch forming a super-fine internal thread copper tube as set forth in claim 3, wherein Both the upper pressure block and the corner bracket clamping end are provided with anti-slip protrusions.

5. The ultra-fine internal thread copper tube stretching and forming device as described in claim 3, characterized in that, The screw has a screw-twisting handle at its top.

6. A device for stretch forming a super-fine internal thread copper tube as set forth in claim 1, characterized by The storage mechanism includes: A storage bin, wherein the bottom of the storage bin is provided with a support leg, the storage bin is supported on the ground by the support leg, the storage bin is provided with a storage cavity inside, and the bottom plate on the side of the storage bin is provided with a material outlet; Multiple guide plates are arranged in a cross pattern inside the storage bin.

7. A device for stretch forming a super-fine internal thread copper tube as set forth in claim 6, characterized in that, Two baffles are provided at the material outlet of the storage bin to restrict the copper tube raw material from continuing to roll, so that there is always only one copper tube raw material outside the storage bin at the material outlet.

8. A device for stretch forming a super-fine internal thread copper tube as set forth in claim 6, characterized in that, The storage bin is equipped with a transparent observation window.

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