Roller press for internal threads of aluminum profile pipe

Abstract

An aluminum profile pipe internal thread roller press comprises a machine frame body, a workpiece feeding and taking device and a workpiece fixing and clamping device are arranged on the machine frame body, a boring head is arranged in the machine frame body, a main shaft is arranged in the boring head, a lifting shaft is arranged in the main shaft, the main shaft and the lifting shaft are driven by a motor to rotate synchronously, and the lower end of the lifting shaft is connected with a lifting device of the lifting shaft. The upper end of the lifting shaft is connected with a guide frame, more than two inclined sliding grooves are formed in the outer wall of the guide frame, knife rests are arranged on the inclined sliding grooves respectively, inclined guide rails are arranged on the knife rests on one sides of the inclined sliding grooves, the inclined guide rails are matched with the inclined sliding grooves, horizontal guide rails are arranged on the lower portions of the knife rests, and a telescopic guide plate is arranged on the main shaft and provided with horizontal sliding grooves. The horizontal guide rail is matched with the horizontal sliding groove, an upper connecting lug and a lower connecting lug are arranged on the tool rest, a hobbing cutter is arranged between the upper connecting lug and the lower connecting lug, a cutter shaft is arranged in the hobbing cutter, and the two ends of the cutter shaft are rotationally connected with the upper connecting lug and the lower connecting lug.

Description

Technical Field

[0001] The present invention relates to an internal thread rolling machine for aluminum profile tubes, belonging to the technical field of rolling machines. Background Art

[0002] When applied to industrial product processing, there are often processing requirements for various special materials. For example, when processing internal threads in thin-walled aluminum profile tubes, due to the relatively soft material density of aluminum profiles, traditional processing methods using ordinary lathes or CNC lathes are prone to deformation and scrapping during the clamping of thin-walled aluminum profile tubes. The internal threads in the tubes are uneven, the quality is difficult to guarantee, the rejection rate is high, the quality is poor, the scrapping rate is high, and during lathe processing, manual loading and unloading are adopted, resulting in low processing efficiency, high labor intensity of workers, and high labor costs. Summary of the Invention

[0003] The purpose of the present invention is to overcome the disadvantages of the existing technology and provide an internal thread rolling machine for aluminum profile tubes with high processing efficiency for internal threads of aluminum profile tubes, high finished product rate of aluminum profile tubes, reliable clamping of aluminum profile tubes, not easy to deform aluminum profile tubes, no need for manual operation, and reduction of labor costs.

[0004] The technical solution of the internal thread rolling machine for aluminum profile tubes of the present invention is as follows: It includes a frame body, on which a loading and unloading device and a workpiece fixing and clamping device are arranged. A boring head is arranged in the frame body, a main shaft is arranged in the boring head, and a lifting shaft is arranged in the main shaft. The main shaft and the lifting shaft are driven by a motor to rotate synchronously. A lifting device of the lifting shaft is connected to the lower end of the lifting shaft, and a guiding frame is connected to the upper end of the lifting shaft. More than two inclined chutes are made on the outer wall of the guiding frame. Tool holders are respectively arranged on each inclined chute. An inclined guide rail is made on one side of the tool holder where it is located on the inclined chute, and the inclined guide rail is matched with the inclined chute. A horizontal guide rail is made at the lower part of the tool holder. A telescopic guide plate is arranged on the main shaft, and a horizontal chute is made on the telescopic guide plate. The horizontal guide rail is matched with the horizontal chute. Upper connecting ears and lower connecting ears are made on the tool holder, a hob is arranged between the upper connecting ears and the lower connecting ears, a tool shaft is arranged in the hob, and both ends of the tool shaft are rotatably connected to the upper connecting ears and the lower connecting ears. The workpiece clamping device includes a fixed disk arranged on the frame body, more than two clamping chutes are made on the fixed disk, and each clamping chute is annularly distributed with the main shaft as the center. Clamping sliders are arranged on each clamping chute, and the clamping sliders are matched with the outer wall of the aluminum profile tube. A clamping slide rail is made under the clamping slider, and the clamping slide rail is slidably matched with the clamping chute. An inclined hole is made in the clamping slider, a lifting guide plate is arranged on the clamping slider, an inclined guide rod is arranged in the lifting guide plate, and the inclined guide rod is matched with the inclined hole. A lifting cylinder is arranged below the frame body, and the piston rod of the lifting cylinder is connected to the lifting guide plate. A locking inner inclined surface is made on the inner wall of the lifting guide plate, and a locking outer inclined surface is made on the outer wall of each clamping slider. When the lifting guide plate moves downward, the locking inner inclined surface and the locking outer inclined surface are matched.

[0005] Further, the upper workpiece picking device includes a bracket, on which a horizontal moving rail is arranged. Two groups of horizontal sliding seats are arranged on the horizontal moving rail, and a power drives the horizontal sliding seats to be slidably matched with the moving rail. On one side of each horizontal sliding seat, a lifting sliding rail is respectively arranged, and a lifting frame is arranged on the lifting sliding rail. A power drives the lifting frame to be slidably matched with the lifting sliding rail. A manipulator is arranged at the lower end of the lifting frame, and the manipulator is matched with the aluminum profile tube.

[0006] Further, a guiding rod is arranged on the main body of the frame. A guiding hole is made in the lifting guiding plate, and a guiding sleeve is arranged in the guiding hole. The guiding sleeve is matched with the guiding rod.

[0007] Further, the lifting device of the lifting shaft includes a servo motor. The output shaft of the servo motor is connected to a lead screw, and the lower end of the lifting shaft is connected to a nut. The nut is in threaded fit with the lead screw.

[0008] The beneficial effects of the internal thread rolling machine for aluminum profile tubes of the present invention are as follows: First, when the motor drives the main shaft, the lifting shaft, the tool holder, and the hob to rotate, the lifting device drives the lifting shaft to descend, and the lifting shaft drives the hob to gradually contact the inner wall of the aluminum profile tube, rolling internal threads on the inner wall of the aluminum profile tube, improving production efficiency, with high machining accuracy and a high pass rate of the processed aluminum profile tubes. Second, the clamping sliders of the workpiece clamping device are evenly distributed in a ring shape, and the inner walls surrounded by the clamping sliders clamp the outer wall of the aluminum profile tube. The clamping is reliable. The ring-shaped fitting clamping method makes the aluminum profile tube not easily deformed or scrapped, improving the pass rate of the aluminum profile tubes. Third, the locking inner inclined surface and the locking outer inclined surface cooperate to lock the clamping sliders when the clamping sliders clamp the aluminum profile tube, ensuring reliable clamping of the clamping sliders. Fourth, the upper workpiece picking device automatically clamps the aluminum profile tube to be processed and places it into the rolling machine, and after the aluminum profile tube is processed, it can automatically clamp it out. There is no need for manual workpiece loading or picking, the operation is more convenient, the labor cost is reduced, and the production efficiency is improved. Description of the Drawings

[0009] Figure 1 is a perspective view of the internal thread rolling machine for aluminum profile tubes of the present invention; Figure 2 is a structural view of the internal thread rolling machine for aluminum profile tubes of the present invention; Figure 3 is a structural view of the cooperation state of the main body of the frame, the boring head, the aluminum profile tube, the workpiece fixing and clamping device, and the lifting device; Figure 4 is a perspective view of the cooperation state of the lifting shaft, the guiding frame, the tool holder, the hob, and the telescopic guiding plate; Figure 5 is a perspective view of the workpiece clamping device; Figure 6 is a structural view of the workpiece clamping device; Figure 7It is a three-dimensional schematic diagram of the cooperation state of the fixed disk and the clamping slider. Specific implementation mode

[0010] The present invention relates to an internal thread rolling machine for aluminum profiles in a tube, as Figure 1 — Figure 7 shown, which includes a frame body 1. An upper part picking device and a workpiece fixing and clamping device are arranged on the frame body 1. A boring head 2 is arranged in the frame body 1. A main shaft 3 is arranged in the boring head 2. A lifting shaft 4 is arranged in the main shaft 3. The main shaft 3 and the lifting shaft 4 are driven by a motor 5 to rotate synchronously. A lifting device of the lifting shaft is connected to the lower end of the lifting shaft 4. A guide frame 6 is connected to the upper end of the lifting shaft 4. More than two inclined chutes 7 are made on the outer wall of the guide frame 6. Tool holders 8 are respectively arranged on each inclined chute 7. An inclined guide rail 9 is made on one side of the tool holder 8 where it is located on the inclined chute 7. The inclined guide rail 9 is matched with the inclined chute 7. A horizontal guide rail 10 is made at the lower part of the tool holder 8. A telescopic guide plate 11 is arranged on the main shaft 3. A horizontal chute 12 is made on the telescopic guide plate 11. The horizontal guide rail 10 is matched with the horizontal chute 12. Upper connecting ears 13 and lower connecting ears 14 are made on the tool holder 8. A hob 15 is arranged between the upper connecting ears 13 and the lower connecting ears 14. A tool shaft 16 is arranged in the hob 15. Both ends of the tool shaft 16 are rotatably connected to the upper connecting ears 13 and the lower connecting ears 14. The workpiece clamping device includes a fixed disk 31 arranged on the frame body 1. More than two clamping chutes 32 are made on the fixed disk 31. Each clamping chute 32 is annularly distributed with the main shaft 3 as the center. Clamping sliders 33 are arranged on each clamping chute 32. The clamping sliders 33 are matched with the outer wall of the aluminum profile tube. A clamping slide rail 34 is made under the clamping slider 33. The clamping slide rail 34 is slidably matched with the clamping chute 32. An inclined hole 35 is made in the clamping slider 33. A lifting guide plate 36 is arranged on the clamping slider 33. An inclined guide rod 37 is arranged in the lifting guide plate 36. The inclined guide rod 37 is matched with the inclined hole 35. A lifting cylinder 38 is arranged below the frame body 1. The piston rod of the lifting cylinder 38 is connected to the lifting guide plate 36. A locking inner inclined surface 39 is made on the inner wall of the lifting guide plate 36. A locking outer inclined surface 30 is made on the outer wall of each clamping slider 33. When the lifting guide plate 36 moves downward, the locking inner inclined surface 39 and the locking outer inclined surface 41 are matched.

[0011] Further, the upper part picking device includes a bracket 21, on which a horizontal moving rail 22 is arranged. Two groups of horizontal sliding seats 23 are arranged on the horizontal moving rail 22. Power drives the horizontal sliding seats 23 to slide cooperatively with the moving rail 22. On one side of each horizontal sliding seat 23, a lifting sliding rail is respectively arranged, and a lifting frame 25 is arranged on the lifting sliding rail. Power drives the lifting frame 25 to slide cooperatively with the lifting sliding rail. A manipulator 26 is arranged at the lower end of the lifting frame 25, and the manipulator 26 cooperates with the aluminum profile tube. By adopting two groups of horizontal sliding seats 23, and respectively arranging a lifting sliding rail 23, a lifting frame 25 and a manipulator 26 on each group of horizontal sliding seats 23. After the internal thread of the aluminum profile tube 100 in the rolling press is processed, the processed aluminum profile tube 100 is clamped by the manipulator 26 on the left side, and the power drives the lifting frame 25 and the manipulator 26 to move upward along the lifting sliding rail. While the manipulator 26 on the right side clamps the aluminum profile tube 100 to be processed conveyed by the previous process assembly line. At this time, the power drives the two groups of horizontal sliding seats 23 to move leftward simultaneously. The manipulator 26 on the left side clamps the processed aluminum profile tube 100 and moves it leftward above the storage box, and puts the aluminum profile tube 100 into the storage box. While the manipulator 26 on the right side clamps the aluminum profile tube 100 to be processed and places the aluminum profile tube 100 into the workpiece fixing and clamping device of the rolling press.

[0012] Further, a guide rod 42 is arranged on the frame body 1. A guide hole 43 is formed in the lifting guide plate 36, and a guide sleeve 44 is arranged in the guide hole 43. The guide sleeve 44 cooperates with the guide rod 42. With the guide rod 42 and the guide hole 43, it plays a guiding role for the lifting guide plate 36, making its movement more accurate and reliable. And the guide sleeve 44 can increase its wear resistance and improve its service life.

[0013] Further, the lifting device of the lifting shaft includes a servo motor 51. The output shaft of the servo motor 51 is connected to a lead screw 52. The lower end of the lifting shaft 4 is connected to a nut 53, and the nut 53 is in threaded cooperation with the lead screw 52. By driving the lead screw 52 to rotate through the output shaft of the servo motor 51, the lead screw 52 drives the nut 53 to lift through the thread, and the nut 53 drives the lifting shaft 4 to lift. The lifting action is more delicate and precise, thereby improving the processing accuracy.

[0014] The present invention discloses an internal thread rolling machine for aluminum profile tubes. When rolling internal threads on an aluminum profile tube 100, a group of manipulators 26 (the specific structure of the manipulator is prior art) clamp the aluminum profile tube 100 to be processed, and the loading and unloading device drives it to the central position of each clamping slider 33 of the workpiece fixing and clamping device. At this time, the lifting cylinder 38 drives the lifting guide plate 36 to move downward, and the lifting guide plate 36 drives each inclined guide rod 37 to move downward together. Under the guiding cooperation of the inclined guide rod 37 and the inclined hole 35, the clamping slider 33 is driven to move towards the center along the clamping chute 32. Each clamping slider 33 is annularly clamped on the outer wall of the aluminum profile tube 100 to clamp the aluminum profile tube 100. At this time, the motor 5 drives the main shaft 3 and the lifting shaft 4 to rotate synchronously. The main shaft 3 drives the telescopic guide plate 11 to rotate, and the lifting shaft 4 drives the guide frame 6, the tool holder 8 and the hob 15 to rotate together. Then, the servo motor 51 drives the lead screw 52 to rotate. The lead screw 52 is in threaded cooperation with the nut 53, driving the nut 53 to move downward. The nut 53 drives the lifting shaft 4 to move downward, and the lifting shaft 4 drives the guide frame 6 to move downward. The guide frame 6 is matched with the inclined guide rail 9 of the tool holder 8 through the inclined chute 7 on the outer wall, so that the tool holder 8 gradually moves outward. The upper and lower connecting ears 13, 14 of the tool holder 8 drive the tool shaft 16 and the hob 15 to move outward, so that the hob 15 gradually contacts the aluminum profile tube 100 while rotating, and the hob 15 rolls internal threads on the inner wall of the aluminum profile tube 100. When the processing of the aluminum profile tube 100 is completed, the lifting device drives the lifting shaft 4 to rise, the lifting shaft 4 drives the guide frame 6 to rise, and the guide frame drives the tool holder 8 and the hob 15 to reset inward. At this time, the workpiece fixing and clamping device also releases the aluminum profile tube 100. Finally, the manipulator 26 of the loading and unloading device takes out the processed aluminum profile tube. For the internal thread rolling machine of the aluminum profile tube in this solution, first, when the motor 5 drives the main shaft 3, the lifting shaft 4, the tool holder 8, and the hob 15 to rotate, the lifting device drives the lifting shaft 4 to descend, and the lifting shaft 4 drives the hob 15 to gradually contact the inner wall of the aluminum profile tube 100, rolling internal threads on the inner wall of the aluminum profile tube 100, improving production efficiency, with high processing accuracy and a high finished product rate of the aluminum profile tube processing; second, the clamping sliders 33 of the workpiece clamping device are annularly and evenly distributed, and each clamping slider 33 encloses a circular inner wall to clamp the outer wall of the aluminum profile tube 100, with reliable clamping. The annular fitting and clamping method makes the aluminum profile tube 100 not easily deformed or scrapped, improving the finished product rate of the aluminum profile tube 100; third, the locking inner inclined surface 39 and the locking outer inclined surface 30 cooperate to lock the clamping slider 33 when the clamping slider 33 clamps the aluminum profile tube 100, ensuring reliable clamping of the clamping slider 33; fourth, the loading and unloading device automatically clamps the aluminum profile tube 100 to be processed and places it in the rolling machine, and after the processing of the aluminum profile tube 100 is completed, it can automatically clamp it out, eliminating the need for manual loading or unloading, making the operation more convenient, reducing labor costs, and improving production efficiency.

Claims

1. Aluminum profile pipe internal thread rolling machine, characterized in that: It includes a frame body (1). An upper part picking device and a workpiece fixing and clamping device are arranged on the frame body (1). A boring head (2) is arranged in the frame body (1). A main shaft (3) is arranged in the boring head (2). A lifting shaft (4) is arranged in the main shaft (3). The main shaft (3) and the lifting shaft (4) are driven by a motor (5) to rotate synchronously. A lifting device of the lifting shaft is connected to the lower end of the lifting shaft (4). A guide frame (6) is connected to the upper end of the lifting shaft (4). More than two inclined sliding grooves (7) are formed on the outer wall of the guide frame (6). Tool holders (8) are respectively arranged on each inclined sliding groove (7). An inclined guide rail (9) is formed on one side of the tool holder (8) where it is located on the inclined sliding groove (7). The inclined guide rail (9) is matched with the inclined sliding groove (7). A horizontal guide rail (10) is formed at the lower part of the tool holder (8). A telescopic guide plate (11) is arranged on the main shaft (3). A horizontal sliding groove (12) is formed on the telescopic guide plate (11). The horizontal guide rail (10) is matched with the horizontal sliding groove (12). An upper connecting ear (13) and a lower connecting ear (14) are formed on the tool holder (8). A hob (15) is arranged between the upper connecting ear (13) and the lower connecting ear (14). A tool shaft (16) is arranged in the hob (15). Both ends of the tool shaft (16) are rotatably connected to the upper connecting ear (13) and the lower connecting ear (14). The workpiece clamping device includes a fixed disk (31) arranged on the frame body (1). More than two clamping sliding grooves (32) are formed on the fixed disk (31). Each clamping sliding groove (32) is annularly distributed around the main shaft (3). Clamping sliders (33) are arranged on each clamping sliding groove (32). The clamping sliders (33) are matched with the outer wall of the aluminum profile tube. A clamping sliding rail (34) is formed under the clamping slider (33). The clamping sliding rail (34) is slidably matched with the clamping sliding groove (32). An inclined hole (35) is formed in the clamping slider (33). A lifting guide plate (36) is arranged on the clamping slider (33). An inclined guide rod (37) is arranged in the lifting guide plate (36). The inclined guide rod (37) is matched with the inclined hole (35). A lifting cylinder (38) is arranged under the frame body (1). The piston rod of the lifting cylinder (38) is connected to the lifting guide plate (36). A locking inner inclined surface (39) is formed on the inner wall of the lifting guide plate (36). A locking outer inclined surface (30) is formed on the outer wall of each clamping slider (33). When the lifting guide plate (36) moves downward, the locking inner inclined surface (39) and the locking outer inclined surface (41) are matched.

2. The internal thread rolling machine for aluminum profile tubes according to claim 1, characterized in that: The upper part picking device includes a bracket (21). A horizontal moving rail (22) is arranged on the bracket (21). Two groups of horizontal sliding seats (23) are arranged on the horizontal moving rail (22). Power drives the horizontal sliding seats (23) to slide in cooperation with the moving rail (22). Lifting sliding rails are respectively arranged on one side of each horizontal sliding seat (23). A lifting frame (25) is arranged on the lifting sliding rails. Power drives the lifting frame (25) to slide in cooperation with the lifting sliding rails. A manipulator (26) is arranged at the lower end of the lifting frame (25). The manipulator (26) is matched with the aluminum profile tube.

3. The internal thread rolling machine for aluminum profile tubes according to claim 1, wherein: A guide rod (42) is arranged on the described frame body (1). A guide hole (43) is formed in the lifting guide plate (36), and a guide sleeve (44) is arranged in the guide hole (43). The guide sleeve (44) is matched with the guide rod (42).

4. The internal thread rolling machine for aluminum profile tubes according to claim 1, characterized in that: The lifting device of the described lifting shaft includes a servo motor (51). The output shaft of the servo motor (51) is connected to a lead screw (52). The lower end of the described lifting shaft (4) is connected to a nut (53). The nut (53) is in threaded fit with the lead screw (52).

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