A multi-pipe synchronous drawing device for pipe processing

Abstract

This invention relates to the field of pipe processing technology, specifically to a multi-pipe synchronous drawing device for pipe processing. It includes a first support frame, a second support frame fixedly connected to the right end of the first support frame, and drawing machine housings at the bottom of both the first and second support frames. A push rod frame is fixedly connected to the left end of the surface of the first support frame, and tail-end push cylinders are evenly arranged on one side of the push rod frame. This invention, through its drawing machine housing, tail-end push cylinders, first sliding frame, flipping frame, clamping frame, perforated mandrel, movable shaft, lifting cylinder, die base, jaws, side frame, high / low frame, feeding frame, and mandrel positioning sensor, enables highly efficient synchronous drawing of pipes. In actual use, the operator first places the pipe blanks (after being rolled and narrowed) on the surface of the storage rack, and then sequentially tumbles them from the storage rack into the feeding rack.

Description

Technical Field

[0001] This invention relates to the field of pipe processing technology, specifically to a multi-pipe synchronous drawing device for pipe processing. Background Technology

[0002] Piping is an essential material in construction projects. Commonly used pipes include water supply pipes, drainage pipes, gas pipes, heating pipes, electrical conduits, and rainwater pipes. With the development of science and technology, the pipes used in home decoration have evolved from ordinary cast iron pipes to cement pipes, ductile iron pipes, galvanized steel pipes, plastic pipes, and aluminum-plastic composite pipes. Condenser pipes have joints at both ends of the inner tube, allowing connection to other equipment in experimental setups, enabling hotter gases or liquids to flow through and condense. The outer tube usually has one opening on each side, connecting to a plastic pipe carrying the cooling substance. In use, the lower opening of the outer tube is generally connected to water... The faucet is designed so that water will automatically flow upwards when heated in the condenser tube, and the water can naturally fill the entire outer tube, expelling air. It is easy to operate. If a better cooling effect is required, the principle of heat exchange tubes can be used to make the flow directions of the inner and outer tubes opposite. This can make the heat exchange more complete and make the temperature difference between the inner and outer walls uniform. The condenser tube is not easily damaged. Brass alloy condenser tubes are high-end condenser tube materials widely used in thermal power, nuclear power, seawater desalination, submarines, ships, and marine engineering. In recent years, with the increase in the size of ships and the development of power units towards ultra-large critical units, the use of brass alloy condenser tubes has become increasingly popular.

[0003] For example, patent document CN 202045171 U discloses a three-line chain stretching device for brass alloy condenser tubes. The stretching device includes: a feeding device, a billet feeding device, a three-station mandrel device, a three-station stretching trolley, hydraulic cylinders, and a material collection device. The mandrel device includes three mandrel fixing seats, three mandrels, and three mandrel adjusting cylinders, with mandrel heads installed at the ends of the three mandrels. The stretching trolley is mounted on the stretching device bed, and three parallel stretching chucks are installed on the trolley, each connected to a clamping cylinder. This utility model adopts a three-station feeding and stretching method, which can greatly improve production efficiency. It can produce ultra-long copper alloy condenser tubes with high added value that are urgently needed in the market. The use of a floating mandrel head for stretching overcomes product defects caused by mandrel vibration during fixed mandrel head stretching, improving product quality and yield.

[0004] However, in actual use, when producing pipes using a trolley, a worker typically uses their right hand to pick up a pipe from the rack, inserts it into a mandrel held up by their left hand, and pushes it fully into the mandrel. The mandrel is then lowered after the die in the mandrel contacts the constricted end of the pipe, and the cold drawing process begins. Since the contact length between the mandrel surface and the inner hole of the pipe is normally greater than three meters, the frictional resistance during the pipe threading process is high, easily causing scratches and abrasions on the inner hole of the pipe. Furthermore, during long-term manual pipe threading, the frequent lifting and lowering of the mandrel, coupled with improper worker operation, can easily cause the mandrel to bend, further increasing the risk of scratches and abrasions between the inner hole of the pipe and the mandrel. A conventional trolley requires one employee and can only process one pipe at a time. The continuous threading increases the worker's workload, and the frequent bending of the mandrel reduces its lifespan and the quality of the product's inner hole, hindering daily use. Therefore, there is an urgent need to design a multi-pipe synchronous drawing device to solve these problems. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-pipe synchronous drawing device for pipe processing, to solve the problems mentioned in the background art. In actual use, existing structures typically require manual labor when using a trolley to pick up a pipe from the rack with the right hand, insert it into a mandrel held in the left hand, and push it fully into the mandrel. The mandrel is then lowered after the die in the mandrel contacts the constricted end of the pipe, and cold drawing is performed. Since the contact length between the mandrel surface and the inner hole of the pipe is normally greater than three meters, the frictional resistance during pipe threading is high, easily causing defects such as scratches and abrasions on the inner hole of the pipe. Furthermore, during long-term manual pipe threading, the frequent lifting and lowering of the mandrel, coupled with improper operation by workers, easily causes the mandrel to bend, further increasing the risk of scratches and abrasions between the inner hole of the pipe and the mandrel. Conventional trolleys require one employee and can only process one pipe at a time. The continuous threading increases the labor intensity of workers, and the frequent bending of the mandrel reduces its service life and the quality of the product's inner hole, which is detrimental to daily use.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-pipe synchronous drawing device for pipe processing, comprising a first support frame, a second support frame fixedly connected to the right end of the first support frame, a drawing machine housing provided at the bottom of both the first and second support frames, a push rod frame fixedly connected to the left end of the surface of the first support frame, a tail push core cylinder evenly arranged on one side of the push rod frame, a first sliding frame fixedly connected to the other side of the push rod frame, a flipping frame provided inside the first sliding frame, a pressing frame fixedly connected to one end of the flipping frame, a perforated mandrel evenly fixedly connected to the surface of the flipping frame, an oil drain pipe fixedly connected to the top of the perforated mandrel, an airbag base provided at the bottom of the pressing frame, a movable shaft provided on one side of the pressing frame, a lifting cylinder provided inside the first support frame, a die base provided at the right end of the surface of the first support frame, and jaws provided on the surface of the second support frame;

[0007] A side frame is fixedly connected to the right side of the first support frame and the left side of the side frame. A high-low frame is fixedly connected to one end of the side frame, and a second sliding frame is fixedly connected to the surface of the other end of the side frame. A transverse push rod is provided at one end of the second sliding frame. A feeding frame is fixedly connected to the top of the high-low frame, and a storage frame is fixedly connected to the side of the feeding frame. A discharging frame is fixedly connected to the side of the high-low frame away from the storage frame. A push rod seat is fixedly connected to one end of the feeding frame, and an ejector push rod is provided inside the push rod seat. An ejector head is fixedly connected to one end of the ejector push rod, and a damping pad is provided on the bottom wall of the feeding frame near the push rod seat.

[0008] Preferably, a discharge seat is fixedly connected to the top of the back of the discharge rack, and a conveyor belt is provided inside the top of the discharge rack.

[0009] Preferably, a top frame is fixedly connected to the top of the discharge rack, an adjusting spring is fixedly connected to the bottom of the top frame, a limiting pressure plate is fixedly connected to the bottom end of the adjusting spring, and a limiting inclined plate is fixedly connected to the side of the limiting pressure plate.

[0010] Preferably, the bottom end of the lifting cylinder is provided with a first rotating shaft, the top end of the lifting cylinder is provided with a second rotating shaft, and the top end of the lifting cylinder is movably connected to a lifting bar through the second rotating shaft.

[0011] Preferably, the surface of the mold base is uniformly connected with an inner mold, the bottom of the mold base is fixedly connected with a first movable seat, and the bottom of the jaws is fixedly connected with a second movable seat.

[0012] Preferably, a pressing seat is fixedly connected to one end of the perforated core rod near the first sliding frame, and an airbag pressing seat is provided on the inner bottom wall of the pressing seat.

[0013] Preferably, an oil supply pipe is fixedly connected to the top of the clamping seat, and an oil tank is provided at one end of the bottom of the side frame.

[0014] Preferably, a core-penetrating positioning sensor is provided at the other end of the feeding rack, a support frame is fixedly connected to the bottom of the storage rack, and a support base is fixedly connected to the bottom end of the support frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This multi-tube synchronous drawing equipment for pipe processing, through its drawing machine housing, tail pusher cylinder, first sliding frame, tilting frame, clamping frame, perforated mandrel, movable shaft, lifting cylinder, die base, jaws, side frame, high and low frame, feeding frame, and mandrel positioning sensor, enables highly efficient synchronous drawing of pipes. In actual use, the operator first places the pipe blanks (after head reduction) on the surface of the storage rack, and then rolls them sequentially into the feeding frame. At this point, the tilting frame is pneumatically lifted by the lifting cylinder. Then, the transverse push rod at one end of the second sliding frame is activated for intermittent movement. During movement, the perforated mandrel on the tilting frame automatically aligns with the feeding frame via the mandrel positioning sensor, ensuring the perforated mandrel and the feeding frame are in a straight line. After all the pipe blanks have entered the perforated mandrel, the transverse push rod aligns the clamping frame at one end of the tilting frame with the first sliding frame. Reactivate the lifting cylinder to allow the first and second shafts at both ends to rotate in a coordinated manner, enabling the lifting bar to rise and fall in tandem with the bottom of the tilting frame. This allows the tilting frame to be lowered smoothly. Then, the tail-end pusher cylinder pushes the tube blank into the mold opening. The drawing machine housing controls the mold base and jaws to fix the other end of the tube blank. The inner mold inside the mold base is initially fixed, and the jaws quickly connect one end of the inner mold. After pneumatic clamping, the chain hook of the drawing machine housing hooks the chain for pulling. Simultaneously, the two automatic tube-threading and four-tube synchronous cold drawing machines are designed as mirror images on the plan layout. This allows one employee to oversee two machines simultaneously for automated production. The original design of one employee producing one tube is changed to one employee producing eight tubes, greatly improving worker productivity and product quality, reducing worker labor intensity, and demonstrating the practicality of the equipment design.

[0017] This multi-tube synchronous drawing equipment for pipe processing, through the installation of a clamping frame, oil drain pipe, airbag base, movable shaft, feeding frame, discharging frame, push rod seat, ejector push rod, ejector head, damping pad, discharge seat, conveyor belt, top frame, adjusting spring, limit pressure plate, limit inclined plate, and oil supply pipe, further improves the overall processing effect of the equipment. In daily use, when the tube blank enters the feeding frame from the storage rack, one end of the tube blank can be damped and engaged with the damping pad of the feeding frame. Then, the ejector push rod inside the push rod seat is activated, causing it to eject one end of the tube blank through the ejector head, pushing one end of the tube blank away from the damping pad surface, allowing it to fall quickly across the feeding frame surface. It then docks with the perforated mandrel at the core positioning sensor. Normally, the inside of the perforated mandrel is connected through the oil drain pipe and oil supply pipe, allowing the lubricating oil from the oil tank to be transported to the conveyor belt. Inside the perforated mandrel, lubricating oil is sprayed to lubricate the mandrel and its surface, reducing frictional resistance and facilitating a more stable subsequent drawing operation. During the descent of the tilting frame, the air bladder base at the bottom of the clamping frame can be compressed, allowing the air bladder inside the clamping seat to pneumatically clamp itself. When the tilting frame is lifted, the clamping automatically releases. After the tube blank drawing is completed, the tube inside the perforated mandrel can be quickly pushed towards the conveyor belt of the discharge frame by activating the tail-end pusher cylinder. Stable leveling is achieved through the limiting pressure plate and limiting inclined plate at the top of the conveyor belt, assisted by adjusting springs, allowing for rapid collection and processing of the tube. This design reduces worker labor intensity, increases production efficiency and capacity, and improves product surface quality, demonstrating the comprehensiveness of the equipment design. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a front view schematic diagram of the structure of the present invention;

[0020] Figure 3 This is a top view of the flipping frame, mold base, and jaw structure of the present invention;

[0021] Figure 4 This is an overall schematic diagram of the first support frame structure of the present invention;

[0022] Figure 5 This is an overall schematic diagram of the flipping frame structure of the present invention;

[0023] Figure 6 This is an overall schematic diagram of the top frame structure of the present invention;

[0024] Figure 7 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A;

[0025] Figure 8 For the present invention Figure 1 Enlarged schematic diagram of the structure at point B.

[0026] In the diagram: 1. First support frame; 2. Second support frame; 3. Pulling machine housing; 4. Push rod frame; 5. Tail push cylinder; 6. First sliding frame; 7. Tilting frame; 8. Clamping frame; 9. Perforated mandrel; 10. Oil drain pipe; 11. Airbag base; 12. Movable shaft; 13. Lifting cylinder; 14. Die base; 15. Jaws; 16. Side frame; 17. High and low frame; 18. Second sliding frame; 19. Horizontal push rod; 20. Feeding frame; 21. Storage rack; 22. Discharge rack; 23. Push rod seat 24. Ejector push rod; 25. Ejector head; 26. Damping pad; 27. Discharge seat; 28. Conveyor belt; 29. ​​Top frame; 30. Adjusting spring; 31. Limiting pressure plate; 32. Limiting inclined plate; 33. First rotating shaft; 34. Second rotating shaft; 35. Lifting bar; 36. Inner mold; 37. First moving seat; 38. Second moving seat; 39. Pressing seat; 40. Airbag pressure seat; 41. Oil supply pipe; 42. Oil tank; 43. Core positioning sensor; 44. Support frame; 45. Support seat. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1-8 One embodiment provided by the present invention:

[0029] A multi-pipe synchronous drawing device for pipe processing is disclosed in this application. The tail-end pusher cylinder 5, airbag base 11, lifting cylinder 13, ejector push rod 24, conveyor belt 28, adjusting spring 30, and airbag pressure seat 40 used in this application are commercially available products. Their principles and connection methods are existing technologies well-known to those skilled in the art. The device includes a first support frame 1, with a second support frame 2 fixedly connected to the right end of the first support frame 1. A drawing machine housing 3 is provided at the bottom of both the first and second support frames 1. A push rod frame 4 is fixedly connected to the left end of the surface of the first support frame 1, and push rod frames 4 are evenly distributed on one side. A tail-end pusher cylinder 5 is provided. A first sliding frame 6 is fixedly connected to the other side of the push rod frame 4. A flipping frame 7 is provided inside the first sliding frame 6. A clamping frame 8 is fixedly connected to one end of the flipping frame 7. Perforated core rods 9 are evenly fixedly connected to the surface of the flipping frame 7. An oil drain pipe 10 is fixedly connected to the top of the perforated core rod 9. An airbag base 11 is provided at the bottom of the clamping frame 8. A movable shaft 12 is provided on one side of the clamping frame 8. A lifting cylinder 13 is provided inside the first support frame 1. A mold base 14 is provided at the right end of the surface of the first support frame 1. A jaw 15 is provided on the surface of the second support frame 2. The bottom of the lifting cylinder 13... A first rotating shaft 33 is provided at one end, and a second rotating shaft 34 is provided at the top of the lifting cylinder 13. A lifting strip 35 is movably connected to the top of the lifting cylinder 13 through the second rotating shaft 34. Inner molds 36 are evenly connected to the surface of the mold base 14. A first movable seat 37 is fixedly connected to the bottom of the mold base 14. A second movable seat 38 is fixedly connected to the bottom of the jaw 15. A pressing seat 39 is fixedly connected to one end of the perforated core rod 9 near the first sliding frame 6. An airbag pressing seat 40 is provided on the inner bottom wall of the pressing seat 39. The tilting frame 7 is pneumatically lifted by the lifting cylinder 13, and then the transverse push rod 19 at one end of the second sliding frame 18 is activated. Intermittent moving operations are performed. During the movement, the perforated core rod 9 on the surface of the flipping frame 7 automatically aligns with the feeding frame 20 through the core positioning sensor 43. The perforated core rod 9 and the feeding frame 20 are in the same straight line position. After all the tube blanks have entered the interior of the perforated core rod 9, the transverse push rod 19 connects the clamping frame 8 at one end of the flipping frame 7 with the first sliding frame 6. At this time, the lifting cylinder 13 is activated again, so that the first rotating shaft 33 and the second rotating shaft 34 at both ends perform adaptive rotation operations, so that the lifting bar 35 and the bottom of the flipping frame 7 perform adaptive lifting operations, and the entire flipping frame 7 is slowly lowered to a flat position.

[0030] Side frame 16, the right side of side frame 16 is fixedly connected to the left side of first support frame 1, one end of side frame 16 is fixedly connected to high and low frame 17, the other end of side frame 16 is fixedly connected to second sliding frame 18, one end of second sliding frame 18 is provided with transverse push rod 19, the top of high and low frame 17 is fixedly connected to feed frame 20, the side of feed frame 20 is fixedly connected to storage frame 21, and one end of high and low frame 17 away from storage frame 21 is fixedly connected to discharge device. The feed rack 20 has a push rod seat 23 fixedly connected to one end, and an ejector push rod 24 is provided inside the push rod seat 23. An ejector head 25 is fixedly connected to one end of the ejector push rod 24. A damping pad 26 is provided on the bottom wall of the feed rack 20 near the push rod seat 23. A discharge seat 27 is fixedly connected to the top of the back of the discharge rack 22. A conveyor belt 28 is provided inside the top of the discharge rack 22. A top frame 29 is fixedly connected to the top of the discharge rack 22. The bottom of the top frame 29... An adjusting spring 30 is fixedly connected to the main body. A limiting pressure plate 31 is fixedly connected to the bottom end of the adjusting spring 30. A limiting inclined plate 32 is fixedly connected to the side of the limiting pressure plate 31. An oil supply pipe 41 is fixedly connected to the top of the pressing seat 39. An oil tank 42 is provided at one end of the bottom of the side frame 16. A core-penetrating positioning sensor 43 is provided at the other end of the feeding rack 20. A support frame 44 is fixedly connected to the bottom of the storage rack 21. A support base 45 is fixedly connected to the bottom end of the support frame 44. When the tube blank enters the feeding rack 20 from the storage rack 21 in sequence, one end of the tube blank can be damped and fitted with the damping pad 26 of the feeding rack 20. Then, the push rod 24 inside the push rod seat 23 is activated, so that it pushes one end of the tube blank through the push head 25 at one end to push one end of the tube blank away from the surface of the damping pad 26, so that it can fall quickly on the surface of the feeding rack 20 and dock with the perforated core rod 9 from the core-penetrating positioning sensor 43.

[0031] Working principle: During use, the operator first places the tube blanks (after being rolled and narrowed) on the surface of the storage rack 21, and then tumbles them sequentially into the feeding rack 20. At this time, the lifting cylinder 13 pneumatically lifts the tilting frame 7. Then, the transverse push rod 19 at one end of the second sliding frame 18 is activated for intermittent movement. During movement, the perforated mandrel 9 on the surface of the tilting frame 7 automatically aligns with the feeding rack 20 via the core-penetrating positioning sensor 43, ensuring the perforated mandrel 9 and the feeding rack 20 are in a straight line. After all the tube blanks have entered the perforated mandrel 9, the transverse push rod 19 connects the clamping frame 8 at one end of the tilting frame 7 with the first sliding frame 6. Then, the lifting cylinder 13 is activated again, causing the first rotating shaft 33 and the second rotating shaft at both ends to... Shaft 34 performs an adaptive rotation operation, causing the lifting bar 35 to adapt to the bottom of the tilting frame 7 for an adaptive lifting operation, slowly leveling the entire tilting frame 7. Then, the tail pusher cylinder 5 pushes the tube blank into the mold opening, and the drawing machine housing 3 controls the mold base 14 and jaws 15 to fix the other end of the tube blank. The inner mold 36 inside the mold base 14 is initially fixed, and the jaws 15 then quickly connect one end of the inner mold 36. At this time, after pneumatic clamping, the chain hook of the drawing machine housing 3 hooks the chain for pulling. At the same time, the two automatic tube threading four-tube synchronous cold drawing machines are designed as a mirror image on the plan layout, so that one employee can supervise two machines at the same time for automated production, changing the original design of one employee producing one tube to one employee. The production of eight pipes by employees greatly improves worker productivity and product quality. During daily use, when the pipe blank enters the feeding rack 20 from the storage rack 21, one end of the pipe blank can be damped and engaged with the damping pad 26 of the feeding rack 20. Then, the ejector rod 24 inside the push rod seat 23 is activated, causing it to eject one end of the pipe blank through the ejector head 25, pushing one end of the pipe blank away from the surface of the damping pad 26, allowing it to fall quickly onto the surface of the feeding rack 20. It then docks with the perforated mandrel 9 at the core positioning sensor 43. Normally, the interior of the perforated mandrel 9 is connected through the oil drain pipe 10 and the oil supply pipe 41, allowing lubricating oil from the oil tank 42 to be transported to the interior of the perforated mandrel 9. Spraying lubricating oil lubricates the perforated mandrel 9 and its surface, reducing frictional resistance and facilitating a more stable subsequent drawing operation. During the descent of the tilting frame 7, the airbag base 11 at the bottom of the clamping frame 8 can be compressed, allowing the airbag pressure seat 40 inside the clamping seat 39 to pneumatically clamp itself. When the tilting frame 7 is lifted, the clamping automatically releases. After the tube blank drawing is completed, the tail-end pusher cylinder 5 can be activated to quickly push the tube inside the perforated mandrel 9 towards the conveyor belt 28 of the discharge frame 22. Stable leveling and limiting operations are achieved through the limiting pressure plate 31 and limiting inclined plate 32 at the top of the conveyor belt 28, assisted by the adjusting spring 30, allowing the tube to be quickly collected and processed.This design can reduce the labor intensity of workers, increase production efficiency and capacity, and improve the surface quality of products. The above summarizes the entire working principle of this invention.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-pipe synchronous drawing device for pipe processing, comprising a first support frame (1), characterized in that: A second support frame (2) is fixedly connected to the right end of the first support frame (1). A drawing machine housing (3) is provided at the bottom of both the first support frame (1) and the second support frame (2). A push rod frame (4) is fixedly connected to the left end of the surface of the first support frame (1). A tail push core cylinder (5) is evenly arranged on one side of the push rod frame (4). A first sliding frame (6) is fixedly connected to the other side of the push rod frame (4). A flip frame (7) is provided inside the first sliding frame (6). A pressing frame (8) is fixedly connected to one end of the flip frame (7). A perforated core rod (9) is evenly fixedly connected to the surface of the flip frame (7). An oil drain pipe (10) is fixedly connected to the top of the perforated core rod (9). An airbag base (11) is provided at the bottom of the pressing frame (8). A pressing seat (39) is fixedly connected to the end of the perforated core rod (9) near the first sliding frame (6). The inner bottom wall of the pressing seat (39) is provided with an airbag pressing seat (40). The airbag base (11) at the bottom of the pressing frame (8) is compressed. The airbag pressing seat (40) inside the pressing seat (39) performs autonomous pneumatic clamping. A movable shaft (12) is provided on one side of the pressing frame (8). A lifting cylinder (13) is provided inside the first support frame (1). A first rotating shaft (33) is provided at the bottom of the lifting cylinder (13). A second rotating shaft (34) is provided at the top of the lifting cylinder (13). A lifting bar (35) is movably connected to the top of the lifting cylinder (13) through the second rotating shaft (34). The lifting bar (35) and the bottom of the flipping frame (7) are adapted to each other for lifting operations. A mold base (14) is provided on the right end of the surface of the first support frame (1). A jaw (15) is provided on the surface of the second support frame (2). A side frame (16) is fixedly connected to one side of a first support frame (1). A high-low frame (17) is fixedly connected to one end of the side frame (16). A second sliding frame (18) is fixedly connected to the surface of the other end of the side frame (16). A transverse push rod (19) is provided at one end of the second sliding frame (18). The transverse push rod (19) connects the clamping frame (8) at one end of the flipping frame (7) with the first sliding frame (6). A feeding frame (20) is fixedly connected to the top of the high-low frame (17). A storage rack (21) is fixedly connected to the side of the feeding rack (20). A discharge rack (22) is fixedly connected to one end of the high-low frame (17) away from the storage rack (21). A push rod seat (23) is fixedly connected to one end of the feeding rack (20). The push rod seat (23) is provided with an ejector push rod (24) inside. One end of the ejector push rod (24) is fixedly connected to an ejector head (25). The bottom wall of the feed rack (20) is provided with a damping pad (26) near the push rod seat (23). The other end of the feed rack (20) is provided with a core-piercing positioning sensor (43). The bottom of the storage rack (21) is fixedly connected to a support frame (44). The bottom end of the support frame (44) is fixedly connected to a support base (45). The transverse push rod (19) at one end of the second sliding frame (18) performs intermittent movement operations. The perforated core rod (9) on the surface of the flipping frame (7) is automatically aligned with the feed rack (20) through the core-piercing positioning sensor (43). The perforated core rod (9) and the feed rack (20) are in the same straight line position.

2. The multi-tube synchronous drawing equipment for pipe processing according to claim 1, characterized in that: The top of the back of the discharge rack (22) is fixedly connected to the discharge seat (27), and the inside of the top of the discharge rack (22) is provided with a conveyor belt (28).

3. The multi-tube synchronous drawing equipment for pipe processing according to claim 1, characterized in that: The top of the discharge rack (22) is fixedly connected to a top frame (29), and the bottom of the top frame (29) is fixedly connected to an adjusting spring (30). The bottom end of the adjusting spring (30) is fixedly connected to a limiting pressure plate (31), and the side of the limiting pressure plate (31) is fixedly connected to a limiting inclined plate (32).

4. The multi-tube synchronous drawing equipment for pipe processing according to claim 1, characterized in that: The inner mold (36) is uniformly connected to the surface of the mold base (14), the bottom of the mold base (14) is fixedly connected to the first movable seat (37), and the bottom of the jaw (15) is fixedly connected to the second movable seat (38).

5. The multi-tube synchronous drawing equipment for pipe processing according to claim 1, characterized in that: The top of the clamping seat (39) is fixedly connected to an oil pipe (41), and an oil tank (42) is provided at one end of the bottom of the side frame (16).

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