Feeding trolley pushing mechanism of cold pilger mill and using method of feeding trolley pushing mechanism

Abstract

The invention belongs to the field of transportation, particularly relates to a cold pilger mill feeding trolley pushing mechanism and a use method thereof, and aims to overcome the defects that in the prior art, a stop block in a pushing trolley can scratch the outer surface of a pipe, so that the subsequent machining quality is affected, the end face of the steel pipe can be sunken and the like, and if treatment is carried out, the subsequent machining quality is influenced. In order to solve the problem that a core rod is likely to abut against the core rod in the feeding process to cause jamming in the prior art, according to the scheme, the core rod feeding device comprises a machine body, a transmission box is arranged on the machine body, two screw rods are arranged between the transmission box and the machine body, one end of each screw rod is fixedly connected with the output end of the transmission box, and a first motor is fixedly arranged on one side of the transmission box. The screw is driven by the first motor to rotate, movement of the support and feeding of the pipe are achieved, the second motor is matched with the first cutter and the second cutter to accurately cut the pipe, the knocking mechanism can rapidly eject the push strip after cutting, and waste and the pipe are separated.

Description

Technical Field

[0001] The invention relates to the technical field of cold rolling tube mills, and in particular to a feeding trolley pushing mechanism for a cold rolling tube mill and a use method thereof. Background Art

[0002] LG type cold rolling mill is an important metal pipe processing equipment. Its main function is to cold roll steel pipes using annular holes to produce high-precision, high-quality non-ferrous metal seamless pipes. During the rolling process, the rollers exert pressure on the pipes, causing them to undergo plastic deformation, thereby changing the shape and size of the pipes. By adjusting the gap between the rollers and the size of the mandrel, pipes of different diameters and wall thicknesses can be rolled.

[0003] However, the existing cold rolling mill has the following disadvantages during use: 1. During use, the block in the pusher will scratch the outer surface of the pipe, affecting the subsequent processing quality; 2. There may be defects such as depressions on the end face of the steel pipe, which may conflict with the mandrel during the feeding process, causing it to get stuck. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art that the block in the pushing trolley during use may scratch the outer surface of the pipe, affecting the subsequent processing quality, and the end face of the steel pipe may have defects such as depressions. If the pipe is processed, it may clash with the mandrel during feeding, resulting in jamming. A pushing mechanism for a cold rolling tube mill feeding trolley and a method of using the same are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A feeding trolley pushing mechanism for a cold rolling tube mill comprises a machine body, a transmission box is arranged on the machine body, two screws are arranged between the transmission box and the machine body, one end of the screw is fixedly connected to the output end of the transmission box, a first motor is fixedly arranged on one side of the transmission box, the output end of the first motor is fixedly connected to the input end of the transmission box, the two screws are provided with a same support, a feed port for feeding is arranged inside the support, a push plate used in conjunction with the feed port is slidably arranged on one side of the support, an oil cylinder is fixedly arranged on the top of the support, the output end of the oil cylinder is fixedly connected to the push plate, and provides lifting power for the push plate; A mounting plate, the mounting plate is arranged on one side of the transmission box, a sliding frame is slidably provided at the bottom of the mounting plate, a second motor is fixedly provided on one side of the sliding frame, two second cutters for cutting pipes are fixedly sleeved on the output shaft of the second motor, a first cutter is rotatably provided at the bottom of the sliding frame, the rotating shaft of the first cutter is transmission-connected to the output end of the second motor through a coupling, and is used to cut the pipe to form an opening, an electric push rod is fixedly provided at the bottom of the mounting plate, and the output end of the electric push rod is fixedly connected to the sliding frame, and is used to drive the first cutter and the second cutter to move; The knocking mechanism is arranged on one side of the transmission box and is used in conjunction with the sliding frame to remove the cut waste after cutting; A support frame, the support frame is fixedly arranged on one side of the transmission box, one side of the support frame is rotatably provided with a guide cylinder for supporting the pipe, the guide cylinder is provided with a clamping assembly for clamping the pipe, the clamping assembly is used in conjunction with the sliding frame to clamp and flip the pipe to avoid the incision of the rear pipe corresponding to the incision of the front pipe.

[0006] In a possible design, the knocking mechanism includes a fixed plate fixed on one side of the transmission box, two second guide rods are fixed on the top of the fixed plate, the outer wall sliding sleeve of the second guide rod is provided with a push strip, the outer wall sleeve of the second guide rod is provided with a first spring, the two ends of the first spring are respectively fixedly connected to the outer wall of one end of the second guide rod and one side of the push strip, a limiting assembly for limiting the push strip is provided on the fixed plate, the limiting assembly is used in conjunction with the sliding frame to release the limit on the push strip, and cooperates with the first spring to drive the push strip to pop out quickly to separate the waste material from the pipe, a reset assembly is provided on the mounting plate, and the reset assembly is used in conjunction with the sliding frame and the push strip to reset the push strip.

[0007] In a possible design, the limit assembly includes two rectangular grooves opened on the top of the fixed plate, a holder is slidably provided in the rectangular groove, the holder is concave, a wedge is provided on the top of one side, and a socket for cooperating with the wedge is opened on one side of the push strip, a third guide rod is slidably provided through the holder, the third guide rod is fixed in the rectangular groove, a second spring is sleeved on the outer wall of the third guide rod, and the two ends of the second spring are respectively fixedly connected to the inner wall of one side of the rectangular groove and one side of the holder, an extension rod corresponding to the holder is provided on one side of the sliding frame, and a wedge block for cooperating with the holder is fixed on one side of the extension rod, so as to release the limit on the push strip during the movement of the sliding frame.

[0008] In a possible design, the reset assembly includes two pulleys fixedly mounted on the bottom of the mounting plate, with a pull rope wound around the pulley. Both ends of the pull rope are respectively fixedly connected to one side of the sliding frame and the top of the push bar, thereby driving the push bar to reset during the resetting process of the sliding frame.

[0009] In one possible design, the clamping assembly includes a step groove formed on the inner wall of one end of the guide cylinder, a plurality of clamping plates are arranged in the step groove, a sliding rod corresponding to the clamping plate is slidably provided through the outer wall of the guide cylinder, one end of the sliding rod is fixedly connected to the corresponding clamping plate, a rotating ring is rotatably sleeved on the outer wall of the guide cylinder, a waist-shaped hole corresponding to the sliding rod is formed on one side of the rotating ring, a sliding column is arranged in the waist-shaped hole, one end of the sliding column is fixedly connected to the sliding rod, and the rotating ring is transmission-connected to the sliding frame to drive the clamping plate to clamp the pipe.

[0010] In a possible design, a gear is provided on the outer wall of the rotating ring through a one-way bearing sleeve, a connecting strip is fixedly provided on one side of the sliding frame and one of the extension rods, a connecting rod is fixedly provided between the two connecting strips, and a rack meshing with the gear is provided on the outer wall sliding sleeve of the connecting rod, and the clamp is driven to clamp the pipe during the resetting process of the sliding frame, and the pipe is driven to flip.

[0011] In a possible design, at least two first guide rods are fixedly provided on one side of the support, and the same lifting beam is slidably sleeved on the two first guide rods. The push plate is fixed on one side of the lifting beam, and the output end of the oil cylinder is fixedly connected to the lifting beam for guiding the push plate.

[0012] In a possible design, the wedge is triangular in shape to avoid interference with the socket during resetting.

[0013] In a possible design, a rectangular hole is opened at the bottom of the support frame to avoid interference with the external internal lubrication mechanism.

[0014] A method for using a feeding trolley pushing mechanism of a cold rolling tube mill comprises the following steps: S1. First, the pipe is conveyed into the guide cylinder by the feeder, and then the second motor is started to drive the first cutter and the second cutter to rotate, and at the same time, the electric push rod is started to drive the first cutter and the second cutter to move to cut one end of the pipe; S2. After the cutting is completed, the electric push rod is continued to be started to extend, and the limit of the push rod is released. At this time, the push rod can be ejected under the action of the first spring, and the cut pipe waste is knocked off the pipe; S3, restart the electric push rod to reset, during which the first cutter and the second cutter are reset, the push rod is reset, and the pipe in the guide cylinder is turned over so that it can correspond to the previous pipe cut; S4. When the pipe moves to one side of the push plate, the oil cylinder is started to drive the push plate to move down to block the feed inlet; S5. Finally, the first motor is started to drive the support to move and push the pipe into the cold rolling mill.

[0015] Beneficial effects: In the present invention, the pusher mechanism of the cold rolling mill feeding trolley is provided with a pusher plate and an oil cylinder on the support, and the transmission mechanism inside the transmission box is driven by the first motor to operate, so as to drive the two screws to rotate synchronously, thereby driving the support to move horizontally. The feed port inside the support is convenient for feeding, and the pusher plate is driven to rise and fall by the oil cylinder to realize automatic pushing of the pipe, thereby improving the production efficiency and avoiding scratches on the outer wall of the pipe. In the present invention, the feeding trolley pushing mechanism of the cold rolling tube mill is provided with a mounting plate, a sliding frame, a first cutter, a second cutter, a second motor and an electric push rod, the second motor is used to drive the first cutter and the second cutter to rotate, and the sliding frame is driven to move by the electric push rod, thereby driving the first cutter and the second cutter to move, so as to achieve the cutting of the tube, thereby increasing the versatility of the equipment, being able to remove defects at the tube port, and avoiding the formation of pits after processing; In the present invention, the pushing mechanism of the feeding trolley of the cold rolling tube mill is provided with a knocking mechanism. When the sliding frame moves, the wedge block on the extension rod contacts the clamping seat, so that the clamping seat is separated from the insertion hole. The first spring drives the push bar to pop out quickly, knocks the waste material, separates the waste material from the pipe material, avoids affecting the subsequent cutting, improves the cutting quality, and eliminates the need for manual cleaning. In addition, by providing a reset component, using a pulley and a pull rope, when the sliding frame is reset, the push bar is driven to reset through the pull rope, which is convenient for knocking the waste material next time, and ensures the continuous use of the knocking mechanism. In the present invention, the feeding trolley pushing mechanism of the cold rolling tube mill is provided with a support frame, a guide cylinder, a clamping assembly and a sliding frame. When the sliding frame is reset, the rack is driven to move through the connecting bar and the connecting rod, the rack is meshed with the gear, and the rotating ring is driven to rotate, and the sliding rod is driven to move through the waist-shaped hole and the sliding column, thereby driving the clamping plate to clamp the pipe, and as the sliding frame continues to move, the pipe is driven to flip, so as to avoid the incision of the rear pipe corresponding to the incision of the front pipe, thereby improving the cutting quality of the pipe; In the present invention, the first motor drives the screw to rotate to realize the movement of the support and the feeding of the pipe. The second motor cooperates with the first cutter and the second cutter to accurately cut the pipe. The knocking mechanism can quickly pop out the push bar after cutting to separate the waste from the pipe. The clamping assembly is used in conjunction with the sliding frame to automatically clamp the pipe and drive it to flip when the sliding frame is reset, avoiding the problem of the rear pipe cut corresponding to the front pipe cut and ensuring that the pipe will not be scratched during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural schematic diagram of a feeding trolley pushing mechanism of a cold rolling tube mill proposed by the present invention; Figure 2This is a schematic cross-sectional structure diagram of a support of a material pushing mechanism of a cold rolling mill feeding trolley proposed by the present invention; Figure 3 This is a structural schematic diagram of another perspective of a support of a material pushing mechanism of a cold rolling mill feeding trolley proposed by the present invention; Figure 4 for Figure 1 A schematic diagram of the enlarged structure of the middle part A; Figure 5 This is a schematic diagram of the cutter installation structure of the feeding trolley pushing mechanism of a cold rolling tube mill proposed by the present invention; Figure 6 This is a schematic diagram of the strip pushing installation structure of the material pushing mechanism of the feeding trolley of a cold rolling tube mill proposed by the present invention; Figure 7 This is a schematic diagram of the mounting structure of a holder and a fixed plate of a material pushing mechanism of a cold rolling mill feeding trolley proposed by the present invention; Figure 8 This is a schematic diagram of the installation structure of a guide cylinder of a feeding trolley pushing mechanism of a cold rolling tube mill proposed by the present invention; Fig. 9 This is a schematic diagram of the exploded structure of a guide cylinder of a feeding trolley pushing mechanism of a cold rolling tube mill proposed by the present invention; Fig.10 This is a schematic diagram of the pipe after cutting; Fig.11 This is a schematic diagram of the pipe after flipping.

[0017] In the figure: 1, machine body; 2, transmission box; 3, first motor; 4, screw; 5, support; 7, push plate; 8, first guide rod; 9, oil cylinder; 10, lifting beam; 11, mounting plate; 12, first cutter; 13, second cutter; 14, second motor; 15, support frame; 16, guide cylinder; 17, electric push rod; 18, sliding frame; 19, pulley; 20, pull rope; 21, fixed plate; 22, push strip; 2 3. Extension rod; 24. Wedge block; 25. Second guide rod; 26. First spring; 27. Holder; 28. Rectangular groove; 29. ​​Third guide rod; 30. Second spring; 31. Wedge mouth; 32. Socket; 33. Step groove; 34. Clamp; 35. Sliding rod; 36. Rotating ring; 37. Gear; 38. Rack; 39. Connecting rod; 40. Connecting strip; 41. Waist-shaped hole; 42. Sliding column; 43. Rectangular hole. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Example 1: Reference Figure 1-Figure 11A feeding trolley pushing mechanism for a cold rolling tube mill is used in the field of cold rolling tube mills, comprising: a transmission box 2 is fixedly arranged on a machine body 1, and the machine body 1 and the transmission box 2 are connected by two screw rods 4, one end of the two screw rods 4 is respectively fixedly connected to the output end of the transmission box 2 through a coupling, thereby ensuring the stable operation of the transmission box 2. A first motor 3 is fixedly installed on one side of the transmission box 2 by bolts, and the output end of the first motor 3 is fixedly connected to the input end of the transmission box 2 through a coupling, thereby providing power for the transmission box 2. A support 5 is threadedly connected to the two screw rods 4, and a feed port is provided inside the support 5 for feeding the pipe into the working area.

[0020] A push plate 7 is slidably provided on one side of the support 5, and the push plate 7 is used to push the pipe on the side of the feed port into the cold rolling mill. In order to realize the sliding of the push plate 7, at least two first guide rods 8 are fixedly provided on one side of the support 5, and the same lifting beam 10 is slidably sleeved on the two first guide rods 8, and the push plate 7 is fixedly provided on one side of the lifting beam 10. A cylinder 9 is fixedly provided on the top of the support 5, and the output end of the cylinder 9 is fixedly connected to the lifting beam 10 by bolts. When the cylinder 9 is working, it can drive the lifting beam 10 and the push plate 7 to perform lifting movement to realize the opening and closing of the feed port, that is, when the push plate 7 rises from point A to point B, the channel of the support 5 is fully opened, and there is no trace of scratches on the blank tube, which greatly improves the qualified rate of the finished tube; the channel of the support 5 is fully opened, which greatly reduces the resistance of the pusher trolley. When the material is pushed to the front of the push plate 7, the push plate 7 drops from point B to point A, which is the feeding mode. The end face of the blank tube is fully combined with the push plate 7, which greatly improves the possibility of rupture of the end face of the blank tube and ensures the continuity of production.

[0021] A mounting plate 11 is provided on one side of the transmission box 2, and a sliding frame 18 is slidably provided at the bottom of the mounting plate 11, and the sliding frame 18 can slide horizontally on the mounting plate 11. A second motor 14 is fixedly provided on one side of the sliding frame 18 by bolts, and two second cutters 13 are fixedly sleeved on the output shaft of the second motor 14 for cutting the pipe. A first cutter 12 is rotatably provided at the bottom of the sliding frame 18, and the rotating shaft of the first cutter 12 is transmission-connected to the output end of the second motor 14 through a coupling. When the second motor 14 is working, it can simultaneously drive the first cutter 12 and the second cutter 13 to rotate, so as to cut the pipe and form an opening.

[0022] An electric push rod 17 is fixedly provided at the bottom of the mounting plate 11, and the output end of the electric push rod 17 is fixedly connected to the sliding frame 18 by bolts. When the electric push rod 17 is working, it can drive the sliding frame 18 to move horizontally, and then drive the first cutter 12 and the second cutter 13 to move, so as to achieve cutting of the pipe.

[0023] A knocking mechanism is also provided on one side of the transmission box 2, which is used to knock and remove the cut waste after cutting. The knocking mechanism includes a fixed plate 21 fixedly arranged on one side of the transmission box 2, two second guide rods 25 are fixedly arranged on the top of the fixed plate 21, and a push bar 22 is slidably sleeved on the outer wall of the second guide rod 25. A first spring 26 is sleeved on the outer wall of the second guide rod 25, and the two ends of the first spring 26 are respectively fixedly connected to the outer wall of one end of the second guide rod 25 and one side of the push bar 22 by welding. When the push bar 22 is acted upon by an external force, the first spring 26 can be compressed to move, and when the external force disappears, the first spring 26 can drive the push bar 22 to reset.

[0024] The fixed plate 21 is provided with a limit assembly for limiting the push strip 22. The limit assembly includes two rectangular grooves 28 opened at the top of the fixed plate 21. A holder 27 is slidably provided in the rectangular grooves 28. The holder 27 is concave and has a wedge 31 at the top of one side. A plug hole 32 for use with the wedge 31 is provided on one side of the push strip 22. When the wedge 31 of the holder 27 is inserted into the plug hole 32, the push strip 22 can be limited to prevent it from moving. A third guide rod 29 is slidably provided in the holder 27. The third guide rod 29 is fixed in the rectangular groove 28. A second spring 30 is sleeved on the outer wall of the third guide rod 29. The two ends of the second spring 30 are respectively fixedly connected to the inner wall of one side of the rectangular groove 28 and one side of the holder 27 by welding. An extension rod 23 corresponding to the holder 27 is provided on one side of the sliding frame 18, and a wedge block 24 used in conjunction with the holder 27 is fixed on one side of the extension rod 23. During the movement of the sliding frame 18, the wedge block 24 can contact the holder 27 to make it move, thereby releasing the limit on the push strip 22.

[0025] The mounting plate 11 is also provided with a reset assembly for resetting the push bar 22. The reset assembly includes two pulleys 19 fixedly arranged at the bottom of the mounting plate 11, and a pull rope 20 is wound around the pulley 19. The two ends of the pull rope 20 are respectively fixedly connected to one side of the sliding frame 18 and the top of the push bar 22 by a binding belt. When the sliding frame 18 is reset, the push bar 22 can be driven to reset by the pull rope 20.

[0026] A support frame 15 is also provided on one side of the transmission box 2. A guide cylinder 16 is rotatably provided on the support frame 15. The guide cylinder 16 is used to support the pipe. A clamping assembly for clamping the pipe is provided on the guide cylinder 16. The clamping assembly includes a step groove 33 provided on the inner wall of one end of the guide cylinder 16. A plurality of clamping plates 34 are provided in the step groove 33. The clamping plates 34 are used to clamp the pipe. A sliding rod 35 corresponding to the clamping plate 34 is slidably provided through the outer wall of the guide cylinder 16. One end of the sliding rod 35 is fixedly connected to the corresponding clamping plate 34. A rotating ring 36 is rotatably provided on the outer wall of the guide cylinder 16. A waist-shaped hole 41 corresponding to the sliding rod 35 is provided on one side of the rotating ring 36. A sliding column 42 is provided in the waist-shaped hole 41. One end of the sliding column 42 is fixedly connected to the sliding rod 35. When the rotating ring 36 rotates, the sliding rod 35 and the clamping plate 34 can be driven to move through the sliding column 42 to achieve the clamping of the pipe.

[0027] Example 2: Reference Figure 1-Figure 11 , based on the improvement of Example 1: at the same time, the outer wall of the rotating ring 36 is provided with a gear 37 through a one-way bearing sleeve, and a connecting bar 40 is fixedly provided on one side of the sliding frame 18 and one of the extension rods 23, and a connecting rod 39 is fixedly provided between the two connecting bars 40, and a rack 38 meshing with the gear 37 is slidably sleeved on the outer wall of the connecting rod 39. When the sliding frame 18 is reset, the connecting bar 40, the connecting rod 39 and the rack 38 can drive the gear 37 and the rotating ring 36 to rotate, thereby driving the clamping plate 34 to clamp the pipe and drive the pipe to flip, so as to prevent the cut of the rear pipe from corresponding to the cut of the front pipe.

[0028] In addition, a rectangular hole 43 is provided at the bottom of the support frame 15 to avoid conflict with the external internal lubrication mechanism and ensure the normal operation of the equipment.

[0029] In order to prevent the wedge block 24 from interfering with the clamping seat 27 when resetting, the wedge block 24 is triangular in shape.

[0030] In the present application, first, the pipe is conveyed into the guide cylinder 16 by the feeder and the cutting position is exposed, and then the second motor 14 is started to drive the first cutter 12 and the second cutter 13 to rotate, and at the same time, the electric push rod 17 is started to extend, and the extension of the electric push rod 17 can drive the sliding frame 18 to move, and the movement of the sliding frame 18 can drive the first cutter 12 and the second cutter 13 to move to cut one end of the pipe, so that an incision is formed at one end of the pipe; After the cutting is completed, the electric push rod 17 continues to extend to drive the sliding frame 18 to move, and the sliding frame 18 can drive the extension rod 23 to move during the movement, and the extension rod 23 can drive the wedge block 24 to move during the movement of the wedge block 24. During the movement of the wedge block 24, one end of the clamping seat 27 can be pushed to move, and during the movement of the clamping seat 27, the wedge opening 31 at the other end will be separated from the insertion hole 32. At this time, the push strip 22 can be ejected under the action of the first spring 26, and the cut pipe waste can be knocked off the pipe. At the same time, during the movement of the sliding frame 18, the rack 38 can be driven to move through the connecting bar 40 on one side, and the movement of the rack 38 can drive the gear 37 to rotate. Since the gear 37 is mounted on the rotating ring 36 through a one-way bearing, the rotation of the gear 37 will not drive the rotating ring 36 to rotate. Then the electric push rod 17 is started to retract and reset. During the reset process, the first cutter 12 and the second cutter 13 are reset through the sliding frame 18. During the reset process of the sliding frame 18, the extension rod 23 can be reset by pulling one end of the pull rope 20. After moving into position, the clamping seat 27 can drive the wedge 31 to insert into the corresponding insertion hole 32 under the action of the second spring 30, so as to limit the push strip 22. The reset of the sliding frame 18 can drive the two connecting strips 40 to reset. When the connecting strip 40 on the other side contacts the rack 38, the first cutter 12, the second cutter 13 and the two push strips 22 are all away from the pipe. Continuing to move can drive the rack 38 to reset. The reset of the rack 38 can drive the gear 37 to rotate. During the rotation of the gear 37, the rotating ring 36 can be driven to rotate in the opposite direction through the one-way bearing. The reverse rotation of the rotating ring 36 can drive the sliding rod 35 to move downward through the waist-shaped hole 41 and the sliding column 42. The downward movement of the sliding rod 35 can drive the clamping plate 34 to move inward, so as to clamp the pipe. Continuing to move can drive the guide cylinder 16 to rotate, thereby driving the pipe in the guide cylinder 16 to flip so that it can correspond to the previous pipe cut. When the pipe moves to one side of the push plate 7, the oil cylinder 9 is started to drive the push plate 7 to move down to block the feed inlet; Finally, start the first motor 3 to drive the screw 4 to rotate. The rotation of the screw 4 can drive the support 5 to move and use the push plate 7 to push the pipe into the cold rolling mill. At this time, the incisions of the two pipes can be engaged with each other. During the rotation of the front pipe, the incision can drive the rear pipe to rotate, so that it can be fully lubricated through the core rod.

[0031] However, as is well known to those skilled in the art, the working principles and wiring methods of the first motor 3, the cylinder 9, the second motor 14 and the electric push rod 17 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any optional selections according to their needs or convenience.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A feeding trolley pushing mechanism for a cold rolling mill, characterized in that: The machine comprises a body (1), a transmission box (2) is provided on the body (1), two screw rods (4) are provided between the transmission box (2) and the body (1), one end of the screw rod (4) is fixedly connected to the output end of the transmission box (2), a first motor (3) is fixedly provided on one side of the transmission box (2), the output end of the first motor (3) is fixedly connected to the input end of the transmission box (2), the two screw rods (4) are provided with a same support (5), a feed port for feeding is provided inside the support (5), a push plate (7) used in conjunction with the feed port is slidably provided on one side of the support (5), an oil cylinder (9) is fixedly provided on the top of the support (5), the output end of the oil cylinder (9) is fixedly connected to the push plate (7) to provide lifting power for the push plate (7); A mounting plate (11), the mounting plate (11) being arranged on one side of the transmission box (2), a sliding frame (18) being slidably provided at the bottom of the mounting plate (11), a second motor (14) being fixedly provided at one side of the sliding frame (18), two second cutters (13) for cutting pipes being fixedly sleeved on the output shaft of the second motor (14), a first cutter (12) being rotatably provided at the bottom of the sliding frame (18), a rotating shaft of the first cutter (12) being transmission-connected to the output end of the second motor (14) through a coupling, and being used for cutting the pipe to form an opening shape, an electric push rod (17) being fixedly provided at the bottom of the mounting plate (11), the output end of the electric push rod (17) being fixedly connected to the sliding frame (18), and being used for driving the first cutter (12) and the second cutter (13) to move; A knocking mechanism is arranged on one side of the transmission box (2) and is used in conjunction with the sliding frame (18) to remove the cut waste after cutting; A support frame (15), the support frame (15) is fixedly arranged on one side of the transmission box (2), a guide cylinder (16) for supporting the pipe is rotatably arranged on one side of the support frame (15), a clamping assembly for clamping the pipe is arranged on the guide cylinder (16), the clamping assembly is used in conjunction with the sliding frame (18) to clamp and flip the pipe to prevent the incision of the rear pipe from corresponding to the incision of the front pipe.

2. A cold rolling mill feeding trolley pushing mechanism according to claim 1, characterized in that: The knocking mechanism comprises a fixed plate (21) fixedly arranged on one side of the transmission box (2), two second guide rods (25) are fixedly arranged on the top of the fixed plate (21), the outer wall of the second guide rod (25) is slidably sleeved with a push strip (22), the outer wall of the second guide rod (25) is sleeved with a first spring (26), the two ends of the first spring (26) are respectively fixedly connected to the outer wall of one end of the second guide rod (25) and one side of the push strip (22), a limiting component for limiting the push strip (22) is provided on the fixed plate (21), the limiting component is used in conjunction with the sliding frame (18) to release the limit on the push strip (22), cooperate with the first spring (26) to drive the push strip (22) to pop out quickly, and separate the waste material from the pipe, and a reset component is provided on the mounting plate (11), the reset component is used in conjunction with the sliding frame (18) and the push strip (22), and is used to reset the push strip (22).

3. A cold rolling mill feeding trolley pushing mechanism according to claim 2, characterized in that: The limiting assembly comprises two rectangular grooves (28) formed on the top of the fixing plate (21), a holder (27) being slidably disposed in the rectangular grooves (28), the holder (27) being concave and having a wedge opening (31) formed on the top of one side thereof, a plug hole (32) for use in conjunction with the wedge opening (31) formed on one side of the push strip (22), a third guide rod (29) being slidably disposed in the holder (27), the third guide rod (29) being fixedly disposed in the rectangular grooves (28), a second spring (30) being sleeved on the outer wall of the third guide rod (29), two ends of the second spring (30) being respectively fixedly connected to the inner wall of one side of the rectangular groove (28) and one side of the holder (27), an extension rod (23) corresponding to the holder (27) being provided on one side of the sliding frame (18), a wedge block (24) for use in conjunction with the holder (27) being fixedly disposed on one side of the extension rod (23), and releasing the limiting of the push strip (22) during the movement of the sliding frame (18).

4. A cold rolling mill feeding trolley pushing mechanism according to claim 3, characterized in that: The reset assembly comprises two pulleys (19) fixedly mounted at the bottom of the mounting plate (11), a pull rope (20) being wound around the pulley (19), two ends of the pull rope (20) being respectively fixedly connected to one side of the sliding frame (18) and the top of the push bar (22), and driving the push bar (22) to reset during the reset process of the sliding frame (18).

5. A cold rolling mill feeding trolley pushing mechanism according to claim 4, characterized in that: The clamping assembly comprises a step groove (33) formed on the inner wall of one end of the guide cylinder (16), a plurality of clamping plates (34) being arranged in the step groove (33), a sliding rod (35) corresponding to the clamping plate (34) being slidably provided through the outer wall of the guide cylinder (16), one end of the sliding rod (35) being fixedly connected to the corresponding clamping plate (34), a rotating ring (36) being rotatably sleeved on the outer wall of the guide cylinder (16), a waist-shaped hole (41) corresponding to the sliding rod (35) being formed on one side of the rotating ring (36), a sliding column (42) being arranged in the waist-shaped hole (41), one end of the sliding column (42) being fixedly connected to the sliding rod (35), and the rotating ring (36) being transmission-connected to the sliding frame (18) for driving the clamping plates (34) to clamp the pipe.

6. A cold rolling mill feeding trolley pushing mechanism according to claim 5, characterized in that: The outer wall of the rotating ring (36) is provided with a gear (37) via a one-way bearing sleeve, and a connecting bar (40) is fixedly provided on one side of the sliding frame (18) and one of the extension rods (23), and a connecting rod (39) is fixedly provided between the two connecting bars (40). The outer wall sliding sleeve of the connecting rod (39) is provided with a rack (38) meshing with the gear (37), and the clamping plate (34) is driven to clamp the pipe during the resetting process of the sliding frame (18), and the pipe is driven to flip.

7. A cold rolling mill feeding trolley pushing mechanism according to claim 6, characterized in that: At least two first guide rods (8) are fixedly provided on one side of the support (5), and a same lifting beam (10) is slidably sleeved on the two first guide rods (8). The push plate (7) is fixedly provided on one side of the lifting beam (10), and the output end of the oil cylinder (9) is fixedly connected to the lifting beam (10) for guiding the push plate (7).

8. A cold rolling mill feeding trolley pushing mechanism according to claim 7, characterized in that: The wedge block (24) is triangular in shape to avoid interference with the clamping seat (27) during resetting.

9. A cold rolling mill feeding trolley pushing mechanism according to claim 8, characterized in that: A rectangular hole (43) is provided at the bottom of the support frame (15) to avoid interference with an external internal lubrication mechanism.

10. A method for using the cold rolling mill feeding trolley pushing mechanism according to claim 9, characterized in that: The following steps are involved: S1. First, the pipe is conveyed into the guide cylinder (16) by the feeder, and then the second motor (14) is started to drive the first cutter (12) and the second cutter (13) to rotate, and at the same time, the electric push rod (17) is started to drive the first cutter (12) and the second cutter (13) to move and cut one end of the pipe; S2, after the cutting is completed, the electric push rod (17) is continued to be started to extend, and the limit of the push strip (22) is released. At this time, the push strip (22) can be ejected under the action of the first spring (26), and the cut pipe waste is knocked off the pipe; S3, restarting the electric push rod (17) to reset, during which the first cutter (12) and the second cutter (13) are reset, and the push bar (22) is reset, and the pipe in the guide cylinder (16) is turned over so that it can correspond to the previous pipe cut; S4. When the pipe moves to one side of the push plate (7), the oil cylinder (9) is started to drive the push plate (7) to move downward to block the feed inlet; S5. Finally, the first motor (3) is started to drive the support (5) to move and push the pipe into the cold rolling mill.

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