Variable-diameter thin-wall aluminum pipe vertical extrusion forming device and method

Abstract

The invention relates to the technical field of aluminum pipe machining, and discloses a variable-diameter thin-wall aluminum pipe vertical extrusion forming device and method.The variable-diameter thin-wall aluminum pipe vertical extrusion forming device comprises a frame body, a fixed mold and two clamping molds, the clamping molds and the fixed mold are matched to clamp and fix an aluminum pipe, and one side of the frame body is detachably connected with the fixed mold through a bolt; by means of the design that a feeding point of the aluminum pipe is transferred to the outer side of a clamping station, the distance between a worker and a clamping mold is increased, the possibility that the worker is detained in a clamping operation area is completely eradicated from the space layout, the labor intensity of the worker is lowered, and the labor intensity of the worker is lowered. The potential safety hazard that limbs enter a dangerous area due to hand mistakes or fatigue during traditional manual feeding is thoroughly avoided; and through the arrangement of the oil coating module, precise butt joint and avoidance of the oil containing barrel and the extrusion die are achieved, manual lubricating oil coating operation is replaced, and the tedious steps of manual operation are effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of aluminum tube processing technology, specifically to a vertical extrusion forming apparatus and method for variable diameter thin-walled aluminum tubes. Background Technology

[0002] Aluminum tubes are hollow metal tubular materials made from pure aluminum or aluminum alloys through processes such as extrusion. Aluminum tubes with a wall thickness greater than 0.5 mm and less than 5.0 mm are called thin-walled tubes. The processing of partially formed aluminum tubes involves diameter reduction operations, such as expanding or shrinking the ends.

[0003] Currently, aluminum tube diameter reduction is achieved through extrusion molding. When expanding aluminum tubes, most tube expanders are horizontally positioned, meaning the tube's axis is parallel to the ground. This horizontal setup requires manual placement onto a clamping die when expanding thin-walled aluminum tubes. The clamping die is pressed down using a hydraulic press, and prolonged operation can lead to worker fatigue and accidental feeding during clamping, resulting in worker injury. Furthermore, workers must manually apply lubricant to the extrusion die to reduce friction between the extrusion head and the inner wall of the aluminum tube, increasing labor intensity. To address these issues, this invention proposes an integrated and highly automated vertical extrusion molding solution. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a vertical extrusion molding apparatus and method for variable diameter thin-walled aluminum tubes, primarily to solve the safety hazards and high labor intensity issues present in existing technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A vertical extrusion forming device for variable-diameter thin-walled aluminum tubes includes a frame, a fixed mold, and two clamping molds. The clamping molds cooperate with the fixed molds to clamp and fix the aluminum tubes. The fixed mold is detachably connected to one side of the frame by bolts. The top of the frame is equipped with a loading and unloading conveying module for moving and transferring the aluminum tubes. Above the loading and unloading conveying module is a processing and positioning module set on the frame. The clamping mold is set on the processing and positioning module, which is used to move the clamping molds and clamp and position the aluminum tubes conveyed by the loading and unloading conveying module. The top of the frame is equipped with an extrusion module for changing the diameter of the aluminum tubes. The extrusion module is also used for collecting oil droplets after applying oil to the aluminum tubes. An automated oiling module is provided between the extrusion module and the processing and positioning module.

[0006] Further, the feeding and discharging conveying module comprises a base fixed on the frame body, a limiting groove is formed in the top of the base, a square frame is slidably connected in the limiting groove, a detachable positioning head is fixed on the top of the square frame through bolts, and the positioning head is used for fixing during feeding and discharging of the aluminum pipe.

[0007] On the basis of the foregoing scheme, the machining positioning module comprises two groups of guide sets fixed on the frame body, each group of guide sets comprises two vertical columns, sliding frames are slidably connected to the outer walls of the two vertical columns, two clamping molds are respectively located on the opposite sides of the two sliding frames, a second electric push rod is arranged on the top of the frame body and used for driving one of the sliding frames to move, and a joint assembly is arranged on one side of the frame body and used for enabling the two sliding frames to move towards each other.

[0008] As a further scheme of the present application, the joint assembly comprises two racks fixed on one side of the two sliding frames respectively, a gear wheel engaged with the racks is rotatably connected to one side of the frame body, and a baffle vertically limiting the racks is welded to the frame body.

[0009] Further, the oiling module comprises two fixed plates fixed on one side of the frame body, guide grooves are formed in the two fixed plates, a third electric push rod is fixed on one side of the frame body through bolts, a connecting frame is fixed on the movable end of the third electric push rod through bolts, a sliding block is slidably connected to the top of the connecting frame, the sliding block is located between the two fixed plates, guide columns are welded to the two sides of the sliding block and slidably arranged in the guide grooves, an oil containing cylinder for containing oil is welded to one side of the sliding block, a avoiding opening is formed in one side of the frame body and used for avoiding the oil containing cylinder, and a plugging assembly is arranged on the top of the sliding block and used for plugging the oil containing cylinder when the oil containing cylinder is not used.

[0010] On the basis of the foregoing scheme, the plugging assembly comprises a rotating frame rotatably arranged on the top of the sliding block, rotating shafts are welded to the two sides of the rotating frame, torsional springs are arranged between the rotating shafts and the sliding block, a cover is integrally formed at one end of the rotating frame, and a supporting rod is welded between the two fixed plates and used for pressing one end of the rotating frame.

[0011] As a further scheme of the present application, the pressing module comprises a hydraulic cylinder fixed on the top of the frame body, a sliding base is fixed on the movable end of the hydraulic cylinder through bolts and slidably connected to the frame body, a detachable pressing head is fixed on the bottom of the sliding base through bolts, and an oil collecting assembly is arranged on one side of the sliding base and used for collecting the oil dripping from the pressing head after oiling.

[0012] Further, the oil collecting assembly comprises a mounting plate fixed on one side of the sliding base, a rudder is fixed on the top of the mounting plate through bolts, a connecting shaft is connected to the output shaft of the rudder through a key, an oil receiving frame is fixed on the bottom of the connecting shaft through bolts, and a collecting opening is formed in one end of the oil receiving frame, a fixing frame is welded on the bottom of the mounting plate, the connecting shaft rotates in the fixing frame, and a blocking frame is welded on both sides of the fixing frame, a blocking rod is fixed on the top of the oil receiving frame through bolts, and the blocking frame and the blocking rod cooperate to limit the rotation angle of the oil receiving frame.

[0013] On the basis of the foregoing scheme, a fixed cover is fixed on one side of the frame body through bolts, folding rubber covers are arranged on both sides of the fixed cover and fixed on the sliding base, and the gear and the rack are located in the fixed cover and the folding rubber covers.

[0014] A vertical extrusion forming method for a variable-diameter thin-walled aluminum pipe comprises the following steps: Step one: first place the aluminum pipe on the feeding and discharging conveying module, and convey the aluminum pipe to the fixed die through the feeding and discharging conveying module; Step two: use the machining positioning module to drive the two clamping dies to move, so that the two clamping dies cooperate with the fixed die to clamp and fix the aluminum pipe; Step three: before extrusion, use the oiling module to automatically apply lubricating oil to the extrusion die, and use the extrusion module to collect the oil that may drip from the extrusion die; Step four: after the application is completed, use the extrusion module to expand the diameter of the part of the aluminum pipe that exceeds the clamping of the clamping die and the fixed die, and after the expansion is completed, the extrusion die is reset; Step five: use the machining positioning module to drive the clamping die to reset, thereby avoiding the removal of the aluminum pipe; Step six: use the feeding and discharging conveying module to drive the aluminum pipe to move out of the current position, thereby completing the diameter expansion operation of a single aluminum pipe; Step seven: in the subsequent processing process, the operation steps of steps one to six are repeated in sequence, so that the diameter expansion operation of the aluminum pipe can be continuously performed.

[0015] Compared with the prior art, the vertical extrusion forming device and method for variable-diameter thin-walled aluminum pipes provided by the present application have the following beneficial effects: 1. By cooperating with multiple modules, the present application realizes full-process automatic operation of aluminum pipe feeding, clamping and fixing, oiling and lubrication, extrusion and expansion, and product removal after expansion, realizes efficient automatic collaborative operation, and significantly improves the production efficiency and processing quality of variable-diameter thin-walled aluminum pipes.

[0016] 2. The present application transfers the feeding point of the aluminum pipe to the outside of the clamping station, which widens the distance between the worker and the clamping mold, eliminates the possibility of the worker staying in the clamping operation area from the spatial layout, cooperates with the automatic movement of the feeding and discharging conveying module, completely avoids the safety hazard of the limbs entering the dangerous area caused by manual feeding or fatigue, and makes the feeding and discharging process of the aluminum pipe more safe and controllable.

[0017] 3. The present application is provided with a machining positioning module, the whole clamping and avoiding process does not need manual intervention, precise control is realized through the cooperation of the electric push rod and the mechanical structure, the clamping force is stable and the action response is rapid, and the automation degree and operation safety of the machining process are effectively improved.

[0018] 4. The gear and rack transmission combined assembly structure is simple and compact, the transmission efficiency is high, the movement demand of the sliding frame can be quickly responded, the opening and closing actions of the two clamping molds are more coordinated and consistent, and the working reliability of the machining positioning module is improved.

[0019] 5. The present application is provided with an oiling module, which realizes precise docking and avoiding of the oil containing cylinder and the extrusion mold, replaces manual lubricating oil application operation, effectively reduces the cumbersome steps of manual operation, reduces the mold wear risk caused by uneven or missed manual oiling, and is more efficient and reliable than manual brushing.

[0020] 6. The setting of the torsional spring enables the opening and closing action of the cover to be automatically completed with the movement of the sliding block, without the need for additional driving devices, which simplifies the overall structure of the oiling module, reduces the equipment failure rate, ensures the timeliness and accuracy of the action of the cover during opening and closing, and further improves the automation level and reliability of the oiling process.

[0021] 7. The automatic overturning structure controlled by the rudder enables efficient collection of oil, automatic avoiding during extrusion operation and oiling operation, ensures the normal operation of the extrusion module, reduces the workload of manual oil cleaning, and improves the convenience of equipment maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A perspective structural schematic view of a variable-diameter thin-walled aluminum pipe vertical extrusion forming device is provided for the present application; Figure 2 A perspective structural schematic view of a variable-diameter thin-walled aluminum pipe vertical extrusion forming device is provided for the present application; Figure 1 A front side enlarged structural schematic view of the variable-diameter thin-walled aluminum pipe vertical extrusion forming device; Figure 3 A front side enlarged structural schematic view of the variable-diameter thin-walled aluminum pipe vertical extrusion forming device; Figure 1 A rear side enlarged structural schematic view of the variable-diameter thin-walled aluminum pipe vertical extrusion forming device; Figure 4A variable-diameter thin-walled aluminum pipe vertical extrusion forming device upper and lower feeding conveying module structure schematic view is provided for the present application; Figure 5 A variable-diameter thin-walled aluminum pipe vertical extrusion forming device is provided for the present application Figure 4 A middle base cross-section structure schematic view is provided for the present application; Figure 6 A processing positioning module enlarged structure schematic view of a variable-diameter thin-walled aluminum pipe vertical extrusion forming device is provided for the present application; Figure 7 A variable-diameter thin-walled aluminum pipe vertical extrusion forming device is provided for the present application Figure 6 A rear side enlarged structure schematic view is provided for the present application; Figure 8 An oiling module enlarged structure schematic view of a variable-diameter thin-walled aluminum pipe vertical extrusion forming device is provided for the present application; Figure 9 A variable-diameter thin-walled aluminum pipe vertical extrusion forming device is provided for the present application Figure 8 A slider enlarged structure schematic view is provided for the present application; Figure 10 A variable-diameter thin-walled aluminum pipe vertical extrusion forming device is provided for the present application Figure 9 A whole explosion structure schematic view is provided for the present application; Figure 11 An extrusion module enlarged structure schematic view of a variable-diameter thin-walled aluminum pipe vertical extrusion forming device is provided for the present application; Figure 12 A variable-diameter thin-walled aluminum pipe vertical extrusion forming device is provided for the present application Figure 11 A slider base enlarged structure schematic view is provided for the present application.

[0023] In the figure: 1, frame body; 2, upper and lower feeding conveying module; 3, processing positioning module; 4, oiling module; 5, extrusion module; 6, fixed cover; 7, folded rubber cover; 8, fixed mold; 9, clamping mold; 10, avoidance port; 201, base; 202, limiting groove; 203, first electric push rod; 204, square frame; 205, positioning head; 301, second electric push rod; 302, sliding frame; 303, stand column; 304, baffle; 305, gear; 306, rack; 401, third electric push rod; 402, fixed plate; 403, guide groove; 404, connecting frame; 405, sliding block; 406, support rod; 407, guide column; 408, rotating frame; 409, rotating shaft; 410, cover; 411, oil containing cylinder; 412, torsional spring; 501, hydraulic cylinder; 502, sliding base; 503, extrusion head; 504, collection port; 505, oil receiving rack; 506, blocking rod; 507, blocking rack; 508, fixing rack; 509, connecting shaft; 510, mounting plate; 511, steering engine. DETAILED DESCRIPTION

[0024] In order to make the objects, technical solutions and advantages of the present application clearer, the following further describes the present application with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0025] The numbers of components in the present application, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "coupling" in the present application include direct and indirect connection (coupling) unless otherwise specified. In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0027] Please refer to Figures 1-12As shown, a variable-diameter thin-walled aluminum pipe vertical extrusion forming device includes a frame body 1, a fixed die 8 and two clamping dies 9. The clamping dies 9 and the fixed die 8 cooperate to clamp and fix the aluminum pipe. The fixed die 8 is detachably connected to one side of the frame body 1 by bolts. The top of the frame body 1 is provided with an upper and lower feeding conveying module 2 for driving and moving the aluminum pipe for transfer. The upper and lower feeding conveying module 2 is provided above the frame body 1 and is provided with a machining positioning module 3 arranged on the frame body 1. The clamping dies 9 are arranged on the machining positioning module 3. The machining positioning module 3 is used to drive the clamping dies 9 to move, clamp and position the aluminum pipe conveyed by the upper and lower feeding conveying module 2. The top of the frame body 1 is provided with an extrusion module 5 for expanding the diameter of the aluminum pipe. The extrusion module 5 is also used to collect oil drops after the aluminum pipe is oiled. An automatic oiling module 4 is arranged between the extrusion module 5 and the machining positioning module 3. Based on the above, the variable-diameter thin-walled aluminum pipe vertical extrusion forming method is as follows: Step one: first place the aluminum pipe on the upper and lower feeding conveying module 2, and convey the aluminum pipe to the fixed die 8 by the upper and lower feeding conveying module 2; Step two: use the machining positioning module 3 to drive the two clamping dies 9 to move, so that the two clamping dies 9 cooperate with the fixed die 8 to clamp and fix the aluminum pipe; Step three: before extrusion, use the oiling module 4 to automatically smear lubricating oil on the extrusion die, and use the extrusion module 5 to collect the oil that may drop from the extrusion die; Step four: after smearing, use the extrusion module 5 to expand the diameter of the part of the aluminum pipe that exceeds the clamping of the clamping dies 9 and the fixed die 8. After expanding the diameter, the extrusion die 5 is reset; Step five: use the machining positioning module 3 to drive the clamping dies 9 to reset, thereby avoiding the removal of the aluminum pipe; Step six: use the upper and lower feeding conveying module 2 to drive the aluminum pipe to move out of the current position, thereby completing the diameter expansion of a single aluminum pipe; Step seven: in the subsequent processing process, the operation steps of steps one to six are repeated in turn, so that the diameter of the aluminum pipe can be continuously expanded.

[0028] In the feeding and discharging link, the upper and lower feeding conveying module 2 drives the aluminum pipe to enter and exit the clamping station, without the need for manual placement of the aluminum pipe in the clamping station, effectively avoiding the risk of clamping that may occur when workers are tired of operating, and fundamentally ensuring the safety of the operation; In the oiling process, the oiling module 4 can accurately and automatically smear lubricating oil on the extrusion die, replacing the traditional manual oiling method, which not only ensures the uniformity and accuracy of oiling, but also greatly reduces the labor intensity of workers; Meanwhile, the extrusion die set 5 has the function of collecting oil drops after oiling, avoiding the pollution of the lubricating oil to the equipment and the working environment, and making the whole production process more environmentally friendly and efficient. Through the cooperation of multiple modules, the whole process automation operation of the aluminum pipe from clamping and fixing, oiling and lubricating, extrusion and expansion to finished product removal is realized after the aluminum pipe is loaded, efficient automatic collaborative work is realized, and the production efficiency and processing quality of the variable-diameter thin-walled aluminum pipe are significantly improved.

[0029] In order to drive the aluminum pipe to move for transfer; The feeding and discharging conveying module 2 comprises a base 201 fixed on the frame body 1, a limiting groove 202 is formed in the top of the base 201, a square frame 204 is slidably connected in the limiting groove 202, a detachable positioning head 205 is fixed on the top of the square frame 204 through bolts, the positioning head 205 is used for fixing during the feeding and discharging of the aluminum pipe, the top of the positioning head 205 is conical, which facilitates the quick sleeving of the aluminum pipe, and a rubber ring can be sleeved on the circumferential outer side to increase the friction force with the inner wall of the aluminum pipe, prevent the aluminum pipe from slipping during movement, and ensure the stability and reliability of the feeding and discharging process, a first electric push rod 203 is fixed on the top of the frame body 1 through bolts, and the movable end of the first electric push rod 203 is fixed with the square frame 204; When it is necessary to drive the aluminum pipe to feed or discharge, the aluminum pipe is first sleeved on the positioning head 205, the movable end of the first electric push rod 203 drives the square frame 204 to slide in the limiting groove 202, and then the aluminum pipe is moved to the fixed die 8 through the positioning head 205 to complete the feeding; After the aluminum pipe is processed, the movable end of the first electric push rod 203 drives the square frame 204 to slide reversely, so that the positioning head 205 moves the processed aluminum pipe out of the clamping station, realizing the automatic transfer of the aluminum pipe; Through the design of transferring the feeding point of the aluminum pipe to the outside of the clamping station, the distance between the worker and the clamping die 9 is widened, which eliminates the possibility of the worker staying in the clamping operation area from the spatial layout, cooperates with the automatic movement of the feeding and discharging conveying module 2, completely avoids the safety hazard of the limbs entering the dangerous area caused by the hand error or fatigue during the traditional manual feeding, and makes the feeding and discharging process of the aluminum pipe more safe and controllable.

[0030] In order to drive the clamping die 9 to move, the aluminum pipe station is transferred for clamping and avoiding; The processing positioning module 3 comprises two groups of guide groups fixed on the frame body 1, each group of guide groups comprises two vertical columns 303, the two vertical columns 303 are slidably connected with a sliding frame 302 on the two side walls, two clamping dies 9 are respectively located on the opposite sides of the two sliding frames 302, the top of the frame body 1 is provided with a second electric push rod 301 for driving one of the sliding frames 302 to move, and one side of the frame body 1 is provided with a joint assembly for enabling the two sliding frames 302 to move towards each other; When the aluminum pipe needs to be clamped, the aluminum pipe is located at the fixed mold 8, the second electric push rod 301 is started, the movable end of the second electric push rod 301 drives the sliding frame 302 connected thereto to slide along the stand 303 to the base 201, and simultaneously, through the linkage action of the joint assembly, the other sliding frame 302 is synchronously moved to the base 201, the two sliding frames 302 drive the clamping molds 9 connected thereto to approach each other until the aluminum pipe is clamped and fixed in cooperation with the fixed mold 8; When the aluminum pipe needs to be removed after processing, the movable end of the second electric push rod 301 drives the sliding frame 302 to slide reversely, and the joint assembly synchronously drives the other sliding frame 302 to slide reversely, so that the two clamping molds 9 move away from each other, the clamping of the aluminum pipe is released, and the aluminum pipe is moved to the side to provide sufficient space for the removal of the aluminum pipe; The entire clamping and avoiding process does not need manual intervention, and precise control is realized through the cooperation of the electric push rod and the mechanical structure, so that the clamping force is stable and the action response is rapid, and the automation degree and operation safety of the processing process are effectively improved.

[0031] In order to realize the synchronous operation of the two sliding frames 302; The joint assembly includes two racks 306 fixed on one side of the two sliding frames 302 respectively, the gear 305 engaged with the racks 306 is rotatably connected to one side of the frame body 1, and the baffle 304 vertically limiting the racks 306 is welded, and the gear 305 is located between the two racks 306; When one of the sliding frames 302 moves under the drive of the second electric push rod 301, the rack 306 connected thereto moves synchronously, thereby driving the gear 305 to rotate, and the rotating gear 305 drives the other rack 306 to move in the opposite direction. Since the two racks 306 are fixedly connected to the two sliding frames 302 respectively, the two sliding frames 302 realize synchronous movement towards or away from each other under the transmission action of the gear 305 and the rack 306; The baffle 304 is arranged on the upper and lower sides of the rack 306, can limit the movement track of the rack 306, prevent the vertical deviation of the rack 306 during movement, and ensure that the rack 306 always keeps precise engagement with the gear 305, thereby ensuring the movement synchronization and stability of the two sliding frames 302, avoiding the deviation of the clamping position of the clamping mold 9 due to the misalignment of the rack 306, and affecting the processing precision and clamping effect of the aluminum pipe; The joint assembly structure of the gear and rack transmission is simple and compact, has high transmission efficiency, can quickly respond to the movement demand of the sliding frame 302, makes the opening and closing actions of the two clamping molds 9 more coordinated, and improves the working reliability of the processing positioning module 3; In addition, the gear 305 and the rack 306 can be selected as a helical gear and a helical rack. The engagement mode of the helical gear and the helical rack can increase the contact area between the teeth, make the transmission process more stable, reduce the transmission noise, and the helical tooth structure has stronger bearing capacity, which can effectively cope with the radial force generated when the clamping mold 9 clamps the aluminum pipe, and prolong the service life of the combined assembly. Compared with the straight gear transmission, the engagement transmission of the helical gear and the helical rack can also realize more accurate transmission ratio, ensure that the moving distances of the two carriages 302 are completely consistent, thereby ensuring that the clamping forces of the two clamping molds 9 on the aluminum pipe are uniformly distributed, avoiding the deformation or unstable clamping of the aluminum pipe due to uneven force, and further improving the positioning accuracy and stability in the aluminum pipe processing process.

[0032] In order to realize automatic oiling for the extrusion mold; The oiling module 4 includes two fixed plates 402 fixed on one side of the frame body 1, and the two fixed plates 402 are both provided with a guide groove 403. The guide groove 403 is in a "Z" shape, and a third electric push rod 401 is fixed on one side of the frame body 1 by bolts. The movable end of the third electric push rod 401 is fixed with a connecting frame 404 by bolts, and the top of the connecting frame 404 is slidably connected with a sliding block 405. The sliding block 405 is located between the two fixed plates 402, and guide columns 407 are welded on both sides of the sliding block 405 and slide in the guide grooves 403. The cooperation between the guide columns 407 and the guide grooves 403 ensures the stability of the movement track of the sliding block 405, avoiding the deviation of the position during the oiling process to cause the extrusion mold to be unable to be placed in the oil container 411. An oil container 411 for containing oil is welded on one side of the sliding block 405. The oil container 411 allows the extrusion mold to be directly immersed in the oil to complete the surface lubrication. Compared with the traditional manual brushing method, the oiling efficiency is improved, and the uniform coverage of the oil film on the mold surface is ensured, effectively reducing the friction coefficient between the mold and the inner wall of the aluminum pipe during the extrusion process. A position avoiding opening 10 is formed on one side of the frame body 1, which is used for avoiding the position of the oil container 411. A plugging assembly is arranged on the top of the sliding block 405 to close the oil container 411 when it is not in use. When the extrusion mold needs to be oiled, the movable end of the third electric push rod 401 drives the connecting frame 404 to move, the connecting frame 404 drives the sliding block 405 to move, and the guide columns 407 on both sides of the sliding block 405 slide in the guide grooves 403 of the fixed plates 402, so that the sliding block 405 moves along the track defined by the guide grooves 403 (first upward, then obliquely upward, and finally upward), and then drives the oil container 411 to move to the extrusion mold, so that the extrusion mold is located in the oil container 411, thereby allowing the extrusion mold to have oil on the surface. After the oiling is completed, the third electric push rod 401 drives the connecting frame 404 to move reversely, the sliding block 405 is reset under the action of the guide column 407 and the guide groove 403, the oil containing cylinder 411 returns to the initial position, the movement of the extrusion die set 5 is avoided, and at this time the blocking assembly blocks the oil containing cylinder 411 to prevent oil leakage; The sliding block 405 is driven to move along the preset track by the electric push rod, the accurate butt joint and avoidance of the oil containing cylinder 411 and the extrusion die can be realized, the manual lubricating oil application work is replaced, the cumbersome steps of manual operation are effectively reduced, the mold wear risk caused by uneven or missed manual oiling is reduced, and the automatic lubricating oil application device is more efficient and reliable than manual brushing.

[0033] In order to block the oil containing cylinder 411 when it is not used; The blocking assembly comprises a rotating frame 408 rotating on the top of the sliding block 405, the rotating frame 408 is welded on both sides of the rotating shaft 409, the torsional spring 412 is arranged between the rotating shaft 409 and the sliding block 405, one end of the rotating frame 408 is integrally formed with a cover 410, and the supporting rod 406 is welded between the two fixed plates 402 and used for extruding one end of the rotating frame 408; During the upward movement of the sliding block 405, the supporting rod 406 will gradually be out of contact with the rotating frame 408, and in the process of being out of contact, the torsional spring 412 which is twisted with torsion will drive the rotating frame 408 to rotate, so as to open the cover 410 and make the opening of the oil containing cylinder 411 in an open state, so that the extrusion die can smoothly enter the oil containing cylinder 411 to complete the oiling; When the oiling is completed and the sliding block 405 is reset and moves downward, one end of the rotating frame 408 will be in contact with the supporting rod 406 and be extruded by the supporting rod 406, the rotating frame 408 rotates around the rotating shaft 409, the torsional spring 412 is twisted and stored, and at the same time the cover 410 gradually covers the opening of the oil containing cylinder 411, until the sliding block 405 returns to the initial position, the cover 410 completely blocks the oil containing cylinder 411, effectively preventing foreign matters from entering the oil containing cylinder 411 in the non-use state of the oil containing cylinder 411, so as to pollute the oil, ensuring the cleanliness and performance stability of the oil in each oiling, and further guaranteeing the lubricating effect of the extrusion die and the processing quality of the aluminum pipe; The setting of the torsional spring 412 enables the opening and closing actions of the cover 410 to be automatically completed with the movement of the sliding block 405, without the need for additional driving devices, the overall structure of the oiling die set 4 is simplified, the equipment failure rate is reduced, the timeliness and accuracy of the action of the cover 410 in the opening and closing process are ensured, and the automation level and reliability of the oiling process are further improved.

[0034] It should be noted that the first electric push rod 203, the second electric push rod 301 and the third electric push rod 401 are all prior art, which are matched with magnetic switches, proximity switches or photoelectric switches to realize precise control of the extension and retraction displacement of the push rod.

[0035] In order to expand the diameter of the aluminum pipe; The extrusion module 5 comprises a hydraulic cylinder 501 fixed on the top of the frame body 1, the movable end of the hydraulic cylinder 501 penetrates through the frame body 1 and is fixed with a sliding seat 502 through bolts, the sliding seat 502 is slidingly connected on the frame body 1, the bottom of the sliding seat 502 is fixed with a detachable extrusion head 503 (i.e. an extrusion die) through bolts, and a position-avoiding groove (not shown in the figure) for avoiding oiling of the extrusion head 503 is further formed below the sliding seat 502, and an oil collecting assembly for collecting the oil dripping from the oiled extrusion head 503 is arranged on one side of the sliding seat 502; When it is necessary to expand the diameter of the aluminum pipe, the movable end of the hydraulic cylinder 501 pushes the sliding seat 502 to slide downward along the frame body 1, the sliding seat 502 drives the extrusion head 503 to move towards the aluminum pipe, and radial extrusion force is applied to the part of the aluminum pipe beyond the clamping of the clamping die 9 and the fixed die 8, so that the aluminum pipe is plastically deformed under the action of the pressure to realize the expansion of the diameter; During the downward movement of the extrusion head 503 until the extrusion head 503 is about to contact the aluminum pipe, the oil collecting assembly moves synchronously with the sliding seat 502 and is always located below the extrusion head 503 to receive and collect the oil possibly dripping from the oiled extrusion head 503, so as to avoid the oil dripping onto the equipment or workbench to cause pollution; After the expansion operation is completed, the movable end of the hydraulic cylinder 501 drives the sliding seat 502 and the extrusion head 503 to reset upward, the oil collecting assembly resets and moves upward, and the oil collecting assembly continues to collect the oil; The extrusion head 503 adopts a detachable design, when it is necessary to expand the diameter of aluminum pipes of different specifications, the matching extrusion head 503 can be quickly replaced, without the need to adjust the entire extrusion module, effectively shortening the equipment changeover time, improving the adaptability to different types of aluminum pipes, and further enhancing the versatility and production flexibility of the equipment.

[0036] It should be noted that the hydraulic cylinder 501 is an execution element in the hydraulic system, which realizes the extension and retraction function by cooperating with the hydraulic system, and realizes the precise control of the extension and retraction displacement of the hydraulic cylinder piston rod by cooperating with the magnetic switch, the proximity switch or the photoelectric switch, and the technical personnel in the field can set it according to the actual needs.

[0037] In order to collect the oil dripping from the oiled extrusion head 503; The oil collecting assembly comprises a mounting plate 510 fixed on one side of the sliding seat 502, a rudder 511 is fixed on the top of the mounting plate 510 by bolts, a connecting shaft 509 is connected to the output shaft of the rudder 511 by a key, an oil receiving frame 505 is fixed on the bottom of the connecting shaft 509 by bolts, a collecting opening 504 is formed in one end of the oil receiving frame 505, a fixing frame 508 is welded on the bottom of the mounting plate 510, the connecting shaft 509 rotates in the fixing frame 508, a blocking frame 507 is welded on each side of the fixing frame 508, a blocking rod 506 is fixed on the top of the oil receiving frame 505 by bolts, and the blocking frame 507 cooperates with the blocking rod 506 to limit the rotation angle of the oil receiving frame 505; When it is necessary to collect oil, the collecting opening 504 is located below the extrusion head 503, so that the oil dropped from the extrusion head 503 can accurately fall into the collecting opening 504; When the extrusion head 503 completes the oil preparation and moves downward for the expansion operation, the rudder 511 controls the connecting shaft 509 to drive the oil receiving frame 505 to horizontally flip until the blocking rod 506 contacts the blocking frame 507, at this time, the oil receiving frame 505 is located away from the extrusion head 503, avoiding interference with the expansion path and the oiling path of the extrusion head 503; When the expansion operation is completed and the extrusion head 503 moves upward, the rudder 511 drives the oil receiving frame 505 to horizontally flip to the collecting position again to continue to receive the oil that may drop; Through the automatic flipping structure controlled by the rudder 511, the oil can be efficiently collected, and the automatic avoidance can be realized during the extrusion operation and the oiling operation, so that the normal operation of the extrusion module 5 is not affected, the workload of manual cleaning of the oil is reduced, and the convenience of equipment maintenance is improved; In addition, the oil receiving frame 505 can be regularly disassembled and cleaned to prevent long-term accumulation from causing oil overflow and equipment pollution.

[0038] In order to ensure that the gear 305 and the rack 306 are in a sealed space; One side of the frame body 1 is fixed with a fixed cover 6, both sides of the fixed cover 6 are provided with a folding rubber cover 7 fixed with the sliding frame 302, and the gear 305 and the rack 306 are located in the fixed cover 6 and the folding rubber cover 7; The fixed cover 6 and the folding rubber cover 7 jointly form a sealed protection space, which can effectively isolate external dust, debris and oil stains and other impurities from entering the meshing area of the gear 305 and the rack 306, avoiding the attachment of impurities on the surface of the gear 305 to affect the transmission precision; At the same time, it prevents the metal debris generated by the friction of the gear 305 and the rack 306 during high-speed meshing from splashing outward, causing a safety hazard to the operator; The folding rubber cover 7 is deformed synchronously with the sliding of the sliding frame 302, neither limits the normal movement of the sliding frame 302, nor always maintains the integrity of the protection space, and ensures that the gear 305 and the rack 306 are in a sealed protection state during the whole movement of the sliding frame 302; In addition, the closed structure can also reduce the outward propagation of noise during the transmission of the gear 305 and the rack 306, improve the equipment operation environment, facilitate centralized lubrication and maintenance of the gear 305 and the rack 306, prolong the service life of the gear 305 and the rack 306, and improve the long-term stable operation ability of the machining and positioning module 3.

[0039] The application is divided into the following steps when in use: S1: First, the aluminum pipe is sleeved on the positioning head 205, the movable end of the first electric push rod 203 drives the square frame 204 to slide in the limiting groove 202, and then the aluminum pipe is moved to the fixed mold 8 through the positioning head 205 to complete the feeding; S2: The second electric push rod 301 is started, the movable end of the second electric push rod 301 drives the sliding frame 302 connected thereto to slide along the stand 303 to the base 201, the rack 306 connected thereto moves synchronously, thereby driving the gear 305 to rotate, the rotating gear 305 drives the other rack 306 to move in the opposite direction, thereby synchronously driving the other sliding frame 302 to move to the base 201, the two sliding frames 302 drive the clamping molds 9 connected thereto to move close to each other, until the clamping molds 9 are clamped and fixed with the fixed mold 8; S3: The movable end of the third electric push rod 401 drives the connecting frame 404 to move, the connecting frame 404 drives the sliding block 405 to move, the guide columns 407 on both sides of the sliding block 405 slide in the guide groove 403 of the fixed plate 402, so that the sliding block 405 moves along the trajectory defined by the guide groove 403, thereby driving the oil containing cylinder 411 to move to the extrusion mold, so that the extrusion mold is located in the oil containing cylinder 411, so that the surface of the extrusion mold has oil; S4: During the operation of the step S3, the rudder 511 controls the connecting shaft 509 to drive the oil receiving frame 505 to horizontally flip until the stop rod 506 contacts the stop frame 507, at this time, the oil receiving frame 505 is located away from the extrusion head 503, avoiding interference with the oil coating path of the extrusion head 503; S5: After the oil coating of the extrusion head 503 is completed, the rudder 511 drives the oil receiving frame 505 to horizontally flip to the collection position again, at this time, the collection opening 504 is located below the extrusion head 503, so that the oil liquid dropped from the extrusion head 503 can accurately fall into the collection opening 504; S6: The movable end of the hydraulic cylinder 501 pushes the sliding seat 502 to slide downward along the frame body 1, the sliding seat 502 drives the extrusion head 503 to move towards the aluminum pipe, and simultaneously drives the oil receiving frame 505 to move synchronously; S7: When the extrusion head 503 is about to contact the aluminum pipe, the rudder 511 controls the connecting shaft 509 to drive the oil receiving frame 505 to horizontally overturn until the stopper 506 contacts the stopper frame 507, at this time, the oil receiving frame 505 is located away from the extrusion head 503, avoiding interference with the expansion path of the extrusion head 503; S8: The hydraulic cylinder 501 continues to push the sliding seat 502 to slide downward, the extrusion head 503 applies a radial extrusion force to the part of the aluminum pipe beyond the clamping die 9 and the fixed die 8, so that the aluminum pipe is plastically deformed under the action of the pressure, realizing the expansion; S9: After the expansion operation is completed, the movable end of the hydraulic cylinder 501 drives the sliding seat 502 and the extrusion head 503 to reset upward, in this process, the rudder 511 drives the oil receiving frame 505 to horizontally overturn to the collection position again, continuing to receive the oil liquid that may drop; S10: The movable end of the second electric push rod 301 drives the sliding frame 302 to slide reversely, and the combined assembly drives the other sliding frame 302 to slide reversely synchronously, the two clamping dies 9 are away from each other, the clamping of the aluminum pipe is released and is avoided to the both sides, providing enough space for the removal of the aluminum pipe; S11: The movable end of the first electric push rod 203 drives the square frame 204 to slide reversely, so that the positioning head 205 removes the processed aluminum pipe from the clamping station, thereby completing the expansion operation of the single aluminum pipe; S12: In the subsequent processing process, the operation steps of S1-S11 are repeated in sequence, so that the expansion operation of the aluminum pipe can be continuously performed.

[0040] The technical features of the above embodiments can be combined in any manner, and to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present application.

[0041] The above embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A vertical extrusion forming device for reducing thin-walled aluminum pipe, comprising a frame (1), a fixed die (8) and two clamping dies (9), the clamping dies (9) and the fixed die (8) cooperate to clamp and fix the aluminum pipe, characterized in that, The side of the frame body (1) is detachably connected with a fixed mold (8) through bolts, the top of the frame body (1) is provided with an upper and lower feeding conveying module (2) for transferring the aluminum pipe, the upper and lower feeding conveying module (2) is provided with a processing positioning module (3) arranged on the frame body (1), a clamping mold (9) is arranged on the processing positioning module (3), the processing positioning module (3) is used for driving the clamping mold (9) to move, and the aluminum pipe conveyed by the upper and lower feeding conveying module (2) is clamped and positioned, the top of the frame body (1) is provided with an extrusion module (5) for changing the diameter of the aluminum pipe, the extrusion module (5) is also used for collecting oil drops after the aluminum pipe is oiled, and the extrusion module (5) and the processing positioning module (3) are provided with an oiling module (4) for automatic oiling.

2. The vertical extrusion forming device for reducing thin-wall aluminum pipe according to claim 1, characterized in that, The upper and lower feeding conveying module (2) comprises a base (201) fixed on the frame body (1), a limiting groove (202) is formed in the top of the base (201), a square frame (204) is slidably connected in the limiting groove (202), and a detachable positioning head (205) is fixedly connected to the top of the square frame (204); the positioning head (205) is used for fixing the aluminum pipe during feeding and discharging; the top of the frame body (1) is fixedly connected with a first electric push rod (203), and the movable end of the first electric push rod (203) is fixedly connected with the square frame (204).

3. The vertical extrusion forming device for reducing thin-wall aluminum pipe according to claim 1, characterized in that, The processing positioning module (3) comprises two groups of guide groups fixed on the frame body (1), each group of guide groups comprises two vertical columns (303), the outer walls of the two vertical columns (303) are slidably connected with a sliding frame (302), and two clamping molds (9) are respectively located on the opposite sides of the two sliding frames (302); the top of the frame body (1) is provided with a second electric push rod (301) for driving one of the sliding frames (302) to move; and one side of the frame body (1) is provided with a joint assembly for enabling the two sliding frames (302) to move towards each other.

4. The vertical extrusion forming device for reducing thin-wall aluminum pipe according to claim 3, characterized in that, The joint assembly comprises two racks (306) fixed on one side of the two sliding frames (302) respectively, one side of the frame body (1) is rotatably connected with a gear (305) engaged with the racks (306) and a baffle (304) welded on the racks (306) for vertical limiting.

5. The vertical extrusion forming device for reducing thin-wall aluminum pipe according to claim 1, wherein The oiling module (4) comprises two fixed plates (402) fixed on one side of the frame body (1), and guide grooves (403) are formed in the two fixed plates (402), one side of the frame body (1) is fixedly connected with a third electric push rod (401), the movable end of the third electric push rod (401) is fixedly connected with a connecting frame (404), the top of the connecting frame (404) is slidably connected with a sliding block (405), the sliding block (405) is located between the two fixed plates (402), guide columns (407) are welded on the two sides of the sliding block (405) and slide in the guide grooves (403), one side of the sliding block (405) is welded with an oil containing cylinder (411) for containing oil, one side of the frame body (1) is provided with an avoiding opening (10) for avoiding the oil containing cylinder (411), and the top of the sliding block (405) is provided with a plugging assembly for closing the oil containing cylinder (411) when not in use.

6. The vertical extrusion forming device for reducing thin-wall aluminum pipe according to claim 5, characterized in that, The plugging assembly comprises a rotating frame (408) rotating on the top of the sliding block (405), and rotating shafts (409) are welded on the two sides of the rotating frame (408), and torsional springs (412) are arranged between the rotating shafts (409) and the sliding block (405), and the one end of the rotating frame (408) is integrally formed with a cover (410), and a supporting rod (406) is welded between the two fixed plates (402) and used for pressing one end of the rotating frame (408).

7. The vertical extrusion forming device for reducing thin-wall aluminum pipe according to claim 1, characterized in that, The extrusion module (5) comprises a hydraulic cylinder (501) fixed on the top of the frame body (1), the movable end of the hydraulic cylinder (501) is fixedly connected with a sliding seat (502) penetrating through the frame body (1), the sliding seat (502) is slidably connected on the frame body (1), the bottom of the sliding seat (502) is fixedly connected with a detachable extrusion head (503), and one side of the sliding seat (502) is provided with an oil collecting assembly for collecting the oil dripping from the extrusion head (503) after oiling.

8. The vertical extrusion forming device for reducing thin-wall aluminum pipe according to claim 7, characterized in that, The oil collecting assembly comprises a mounting plate (510) fixed on one side of the sliding seat (502), the top of the mounting plate (510) is fixedly connected with a rudder machine (511), the output shaft of the rudder machine (511) is key-connected with a connecting shaft (509), the bottom of the connecting shaft (509) is fixedly connected with an oil receiving frame (505), one end of the oil receiving frame (505) is provided with a collecting opening (504), the bottom of the mounting plate (510) is welded with a fixing frame (508), the connecting shaft (509) rotates in the fixing frame (508), the two sides of the fixing frame (508) are welded with blocking frames (507), the top of the oil receiving frame (505) is fixedly connected with a blocking rod (506), and the blocking frames (507) and the blocking rod (506) cooperate to limit the rotation angle of the oil receiving frame (505).

9. The vertical extrusion forming device for reducing thin-wall aluminum pipe according to claim 4, characterized in that, One side of the frame body (1) is fixedly connected with a fixed cover (6), the two sides of the fixed cover (6) are provided with folding rubber covers (7) fixed with the sliding frames (302), and the gear (305) and the rack (306) are located in the fixed cover (6) and the folding rubber covers (7).

10. A method for vertical extrusion of a variable-diameter thin-walled aluminum pipe, using the vertical extrusion device for a variable-diameter thin-walled aluminum pipe according to claim 1, characterized in that, The method comprises the following steps: Step one: first place the aluminum pipe on the feeding and discharging conveying module (2), and convey the aluminum pipe to the fixed mold (8) through the feeding and discharging conveying module (2); Step two: use the machining positioning module (3) to drive the two clamping molds (9) to move, so that the two clamping molds (9) cooperate with the fixed mold (8) to clamp and fix the aluminum pipe; Step three: before extrusion, use the oil coating module (4) to automatically apply lubricating oil to the extrusion mold, and use the extrusion module (5) to collect the oil that may drop from the extrusion mold; Step four: after the application is completed, use the extrusion module (5) to expand the diameter of the part of the aluminum pipe that exceeds the clamping of the clamping mold (9) and the fixed mold (8), and after the expansion is completed, the extrusion mold (5) resets; Step five: use the machining positioning module (3) to drive the clamping mold (9) to reset, so as to avoid the removal of the aluminum pipe; Step six: use the feeding and discharging conveying module (2) to drive the aluminum pipe to move out of the current position, so as to complete the single aluminum pipe expansion operation; Step seven: in the subsequent processing process, the operation steps of steps one to six are repeated in turn, so that the aluminum pipe can be continuously expanded.

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