Ancient feeding device and feeding method for reducing pipe

Abstract

This invention discloses a feeding device for reducing pipes, including a feeding mechanism, a conveying mechanism, a transferring mechanism, and a pushing mechanism. The feeding mechanism and the transferring mechanism are located at the front and rear ends of the conveying mechanism, respectively. A groove is provided at the rear end of the conveying mechanism, with the upper opening width of the groove located between the outer diameters of the large and small ends of the reducing pipe. The transferring mechanism includes a rotating component and a clamping component. The output end of the rotating component is perpendicular to the conveying mechanism and connected to the clamping component. By using the conveying mechanism, the groove at the rear end of the conveying mechanism, and the transferring mechanism to adjust the posture of the reducing pipe, the device saves manpower and resources and improves feeding efficiency compared to previous manual correction methods. The conveying mechanism delivers the reducing pipe to its rear end; the above adjustment process simultaneously solves the two difficult problems of finding and distinguishing the large and small ends. This device features low error rate and high feeding efficiency.

Description

Technical Field

[0001] This invention relates to a feeding device and method, and more particularly to a feeding device and method for reducing pipe diameter. Background Technology

[0002] Pipe clamps, also known as internal threaded connectors, are a type of plumbing fitting used to connect two externally threaded pipes or fittings of the same nominal diameter. Pipe clamps come in two types: equal diameter and reducing diameter. Tapping is a crucial step in pipe clamp manufacturing. Currently, a two-head tapping machine is used for tapping reducing pipe clamps. Because the tapping operation of a two-head tapping machine is fully automatic and requires the reducing pipe to enter the machine in a specified posture, the operator must feed the reducing pipe in this manner. During normal operation, one operator feeds 2-3 two-head tapping machines simultaneously. Manual feeding undoubtedly limits the feeding speed and can lead to inaccurate posture and slow feeding speed. Furthermore, the biggest drawback of this feeding method is that if one two-head tapping machine malfunctions, it will affect the feeding of the other two machines, severely impacting overall production efficiency. Therefore, some technicians proposed using automation technology for automated feeding. However, several technical challenges need to be addressed to achieve automated feeding. First, the shape of the reducer is irregular. As it is a necked cylindrical malleable iron pipe fitting, it only has two relatively regular surfaces, namely the two sides of the cylinder: the large end face and the small end face. Finding these two faces among numerous parts is quite difficult. Second, due to the processing requirements of the two-head tapping machine, the large end and the small end must be distinguished during the feeding of the reducer, ensuring that the large end or the small end enters the two-head tapping machine facing the specified direction. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a reducing pipe feeding device with high feeding efficiency and low error rate. The present invention also provides a reducing pipe feeding method.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] A reducing pipe feeding device includes a feeding mechanism, a conveying mechanism, a transferring mechanism, and a pushing mechanism; the feeding mechanism and the transferring mechanism are located at the front end and the end end of the conveying mechanism, respectively; the end of the conveying mechanism is provided with a settling groove, the width of the upper groove opening of which is between the outer diameters of the large and small ends of the reducing pipe; the transferring mechanism includes a rotating component and a clamping component; the output end of the rotating component is arranged perpendicular to the conveying mechanism; the output end of the rotating component is connected to the clamping component.

[0006] The aforementioned reducing pipe feeding device includes a clamping component comprising four sector-shaped blocks. The four sector-shaped blocks are evenly distributed in a circular plate shape with the output end of the rotating component as the center and the arc edges facing outward. The gap between adjacent sector-shaped blocks forms a receiving groove. The receiving groove can accommodate reducing pipes with their large and small ends facing up and down. When the clamping component rotates, the four receiving grooves are sequentially aligned with the end of the feeding mechanism. A magnetic block is also provided inside the receiving groove.

[0007] The aforementioned reducing pipe feeding device includes a pushing mechanism comprising a pushing cylinder and a pushing block; the pushing block and the upper part slide of the two-head tapping machine are located at both ends of the uppermost receiving groove of the clamping component; the side of the pushing block away from the upper part slide is connected to the output end of the pushing cylinder.

[0008] In the aforementioned reducing pipe feeding device, the pushing block has protrusions on both sides or one side of the end facing the upper part of the chute; the two protrusions can respectively press against the outer surfaces of the large and small ends of the reducing pipe.

[0009] The aforementioned reducing pipe feeding device also includes a damping plate at the bottom of the settling trough at the end of the conveying mechanism.

[0010] The aforementioned reducing pipe feeding device includes a sorting track; the sorting track is V-shaped or U-shaped.

[0011] The aforementioned reducing pipe feeding device further includes a combing mechanism; the combing mechanism includes a combing cylinder and a combing plate; the combing plate is located above the conveying track and is set perpendicular to the material transport direction; a combing opening is opened at the lower part of the combing plate; the combing opening allows reducing pipes with their large and small ends set along the material transport direction to pass through; the output end of the combing cylinder is connected to the combing plate along the material transport direction.

[0012] A method for feeding reducing pipes, using a reducing pipe feeding device, the method comprising the following steps:

[0013] (A) After the reducing pipe is transported to the end of the conveying mechanism, under the action of gravity, the small end enters the settling tank with the large end facing down and is stuck in the upper part of the settling tank with the large end facing up; the reducing pipe continues to be transported backward until it reaches the very end of the settling tank.

[0014] (B) The clamping component clamps the vertical reducer, and the rotating component drives the clamping component to rotate 90 degrees around the output end, so that the direction of the large and small ends of the reducer changes from a vertical posture to a horizontal posture with the small end facing forward.

[0015] (C) The pusher mechanism pushes the horizontally oriented reducer into the upper slide of the two-head tapping machine.

[0016] In the above-mentioned method for feeding reducing pipes, in step (A), the reducing pipes are vibrated and fed on the sorting track. During the feeding process, the posture of the reducing pipes is adjusted using a V-shaped or U-shaped structure. The comb plate moves towards the starting end of the feeding process under the drive of the comb cylinder. During the movement, the comb plate pushes the reducing pipes that cannot pass through the comb opening back to the starting end of the sorting track. The reducing pipes that pass through the comb opening continue to be conveyed backward in a qualified posture.

[0017] In the above-mentioned method for feeding reducing pipes, in step (C), the pushing cylinder drives the pushing block to move towards the upper part chute of the two-head tapping machine, and the moving pushing block feeds the horizontal reducing pipe into the upper part chute.

[0018] The beneficial effects of adopting the above technical solution are as follows: This device uses a conveying mechanism, a settling trough at the end of the conveying mechanism, and a transfer mechanism to adjust the posture of the reducer. Compared with the previous manual correction method, this saves manpower and resources and improves feeding efficiency. Specifically, the conveying mechanism delivers the reducer to its end; the settling trough at the end of the conveying mechanism adjusts the reducer to an orientation where the larger end is upward and the smaller end is downward; finally, the clamping component of the transfer mechanism clamps the vertical reducer, and under the drive of the rotating component, adjusts the vertical posture to a horizontal posture. This adjustment process simultaneously solves the two difficult problems of finding and distinguishing the larger and smaller ends. This device features low error rate and high feeding efficiency.

[0019] This method is simple to operate and easy to maintain later. It transforms the search for the large end and the small end into the adjustment of their direction. The trough at the end of the conveying mechanism is used to make it only vertical with the large end facing upward. Finally, the transfer mechanism is used to make it only horizontal and parallel with the large end facing backward. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the present invention with the bottom support rod and the feeding hopper removed;

[0023] Figure 3 yes Figure 2 The front view;

[0024] Figure 4 yes Figure 2 Top view;

[0025] Figure 5 This is a schematic diagram of the sorting track mechanism;

[0026] Figure 6This is a top view of the feeding mechanism;

[0027] Figure 7 yes Figure 6 Sectional view along axis AA;

[0028] Figure 8 This is a schematic diagram of the comb plate structure;

[0029] Figure 9 Left view of the pusher mechanism, transfer mechanism, and loading conveyor;

[0030] Figure 10 This is the electrical schematic diagram of the present invention.

[0031] The labels in the diagram represent: 1. Feeding bucket; 2. Feeding hopper; 3. Baffle plate; 4. Pushing cylinder; 5. Sector block; 6. Upper part chute; 7. Bottom support rod; 8. Upper and lower adjusting gate; 9. Elastic adjusting gate; 10. Combing plate; 11. Combing cylinder; 12. Pushing block; 13. Rotary motor; 14. Linear vibrating feeder; 15. Through-beam sensor; 16. Feeding cylinder; 17. Feeding push rod; 18. Disc; 19. Sector hole; 20. Control chip; 21. Feeding position sensor; 22. Material full sensor; 23. Anti-clumping bottom; 24. Sorting track; 25. Damping plate. Detailed Implementation

[0032] The reducing pipe described in this invention is a cylindrical malleable iron pipe with a neck, wherein one end is the large end and the other end is the small end.

[0033] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 This invention includes a frame and a conveying mechanism, a unloading mechanism, and a control circuit mounted on the frame. The frame is fixed to the ground by a bottom support rod 7. The conveying mechanism is located on one side of the unloading mechanism and is used for transporting reducing pipes. The conveying mechanism is equipped with a combing mechanism for correcting the posture of the reducing pipes. The end of the conveying mechanism is equipped with a transfer mechanism, a pusher mechanism, and an upper chute 6. The transfer mechanism can adjust the placement of the reducing pipes. The pusher mechanism can push the reducing pipes onto the upper chute 6. Using the above mechanism, when the reducing pipe falls from the unloading mechanism onto the conveying mechanism, the combing mechanism combs and adjusts it. The combed reducing pipe is then transported by the transfer mechanism and subsequently pushed onto the upper chute 6 by the pusher mechanism.

[0034] See Figure 1 , Figure 2, Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The feeding mechanism of this invention includes a feeding hopper 2 and a feeding push rod 17. The feeding hopper 2 is cylindrical and communicates upward with the loading area through a feeding barrel 1. An adjustment door is opened on one side of the lower part. The adjustment door includes an upper and lower adjustment door 8 and an elastic adjustment door 9. The upper and lower adjustment door 8 is movably connected to the feeding hopper 2 to open or close the adjustment door. The elastic adjustment door 9 is located below the upper and lower adjustment door 8 and is used to discharge material when the adjustment door is open. The bottom of the feeding hopper 2 is provided with an anti-stacking bottom 23, which is an inclined plane connected to the bottom of the feeding hopper 2. The inclined plane faces the adjustment door and the bottom is slightly higher than the adjustment door. In this way, after the reducer enters the feeding hopper 2, it can slide directly towards the adjustment door along the anti-stacking bottom 23, thereby avoiding the reducer from accumulating at the bottom of the feeding hopper 2. A feeding push rod 17 is located inside the feeding hopper 2, directly opposite the regulating gate. The end of the feeding push rod 17 away from the regulating gate is connected to the feeding cylinder 16. In this way, the feeding cylinder 16 can drive the feeding push rod 17 to move towards the regulating gate, thereby pushing the reducer out of the elastic regulating gate 9. With the above structure, the feeding process is as follows: the reducer enters the feeding hopper 2 after passing through the feeding barrel 1, and slides along the inclined anti-sagging bottom 23 at the bottom of the feeding hopper 2 to the regulating gate; the feeding push rod 17, driven by the feeding cylinder 16, pushes the reducer towards the regulating gate; the reducer then squeezes the elastic regulating gate 9, causing the elastic regulating gate 9 to deform elastically, and the reducer falls to the starting end of the conveying mechanism; the feeding push rod 17 retracts, and under the elastic action of the elastic regulating gate 9, the reducer that has not fallen will be pressed back into the feeding hopper 2.

[0035] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7The material conveying mechanism of this invention includes a sorting track 24, a linear vibrating feeder 14, and baffle plates 3. Two baffle plates 3 are located at the discharge end of the hopper 2, one on the left and one on the right, to prevent the reducing pipe from falling outside the sorting track 24. The sorting track 24 is a strip track, preferably with a V-shaped or U-shaped bottom surface to prevent the reducing pipe from changing from being along the track to being transverse during transport. The starting end of the sorting track 24 is located below the discharge end of the regulating gate. The linear vibrating feeder 14 is installed below the starting end of the sorting track 24, and vibrates to transport the reducing pipe on the sorting track 24. The combing mechanism is located above the sorting track 24. The conveying mechanism includes a combing cylinder 11, a piston rod, and a combing plate 10. The combing plate 10 is arranged perpendicular to the material transport direction, and its bottom is V-shaped or U-shaped to fit the sorting track 24. A fan-shaped hole 19 is also provided at the center of the bottom. The diameter of the fan-shaped hole 19 is slightly wider than the width of the reducing pipe. This fan-shaped hole 19 only allows reducing pipes with the correct posture and aligned with the sorting track 24 to pass through, while reducing pipes with incorrect posture are blocked. The combing cylinder 11 is located above the sorting track 24 and connected to the combing plate 10. The pushing direction of the combing cylinder 11 is opposite to the transport direction of the reducing pipes on the sorting track 24, thus pushing blocked reducing pipes with incorrect posture back to the beginning of the sorting track 24. The conveying process is as follows: the reducing tubes fall from the discharge end of the hopper 2 to the starting end of the sorting track 24; due to the obstruction of the baffle plate 3, they will not fall to the ground from either side. Under the vibration of the linear vibrating feeder 14, the reducing tubes are conveyed along the sorting track 24. Since the sorting track 24 is a V-shaped or U-shaped strip track, the reducing tubes will continuously adjust their posture to meet the requirements during the transportation process; after encountering the comb plate 10, the reducing tubes that do not meet the shape requirements cannot enter the fan-shaped holes 19 on the comb plate 10 and are pushed back to the starting end of the sorting track 24 by the comb plate 10 driven by the comb cylinder 11. The reducing tubes that meet the posture requirements will continue to be conveyed on the sorting track 24 through the fan-shaped holes 19, and since the sorting track 24 is V-shaped or U-shaped, the posture of the reducing tubes will not change during the transportation process, thus realizing automatic sorting and posture adjustment.

[0036] See Figure 3 , Figure 4 and Figure 5The sorting track 24 has a drop trough at its end; the bottom of the trough is horizontal, and the width of the upper opening of the trough is between the outer diameters of the large and small ends of the reducer; thus, the reducer transported to the end of the sorting track 24 will fall into the trough with its small end facing down and its large end facing up, thus securing it in the upper part of the trough. The linear vibrating feeder 14 uses vibration to continue transporting the reducer in this posture forward until it reaches the very end of the sorting track 24. The bottom of the trough is also equipped with a damping plate 25, so that when the small end of the reducer enters the trough with its small end facing down, it will contact the damping plate 25; the damping plate 25 can prevent the reducer from tilting forward or backward during vibration, ensuring that the reducer always maintains the posture of small end down and large end up while vibrating forward. The conveying end of the trough does not have a bottom, and this bottomless position can accommodate one reducer.

[0037] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 9 The transfer mechanism of this invention includes a rotating component and a clamping component. The rotating component is preferably a rotary motor 13, which, after being fitted with a reducer, is positioned below the upper part slide 6 and extends its output end perpendicular to the sorting track 24. The output end of the rotating component is concentrically fixed to the disc 18. The clamping component includes four sector blocks 5 with a central angle of 90 degrees. The sector blocks 5 are uniformly fixed to the outer edge of the disc 18 with their arc edges facing outwards, centered on the center of the disc 18. Thus, the four sector blocks 5 form a circular plate-like structure on the outside of the disc 18. The gap between adjacent sector blocks 5 forms a receiving groove. A magnetic block is provided inside the receiving groove. Since the central angle of the sector blocks 5 is 90 degrees, the four receiving grooves are all strip-shaped grooves. The width of the receiving groove is the same as or slightly larger than the distance between the large and small ends of the reducing pipe, so that the receiving groove can accommodate reducing pipes with their large and small ends in an up-down orientation. When the four receiving slots are in vertical and horizontal positions respectively, one of the receiving slots is directly opposite the conveying end of the settling trough. Furthermore, the receiving slot is precisely located in the middle of the unbottomed section of the settling trough's conveying end. Thus, when the reducing tube at the very end of the sorting track 24 continues to vibrate forward under the action of the linear vibrating feeder 14, the reducing tube at the settling trough's conveying end will be drawn into the receiving slot by the magnetic block. The unbottomed portion of the settling trough also blocks the reducing tube from tilting left and right during the drawing process, preventing it from falling to other positions. Because the bottom of the settling trough is equipped with a damping plate 25, except for the very last reducing tube which is drawn into the receiving slot, other reducing tubes will not be drawn in due to the damping plate 25. The rotating assembly 13 rotates 90 degrees, causing the vertically entering reducing tube to become horizontal.

[0038] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8 The pushing mechanism of the present invention includes a pushing cylinder 4 and a pushing block 12. The pushing block 12 and the upper part slide 6 of the two-head tapping machine are located at both ends of the uppermost receiving groove of the clamping component; the side of the pushing block 12 away from the upper part slide 6 is connected to the output end of the pushing cylinder 4. The pushing block 12 has protrusions on both sides or one side of the end facing the upper part slide; when there are protrusions on both sides, a "∪" or "︺" shaped structure is formed. The protrusion on the front end of the pushing block 12 is longer than the protrusion on the rear end of the conveying, and the length difference is H; the difference between the outer diameter of the large end and the outer diameter of the small end of the reducer is L; H = L / 2; in this way, when the pushing block 12 pushes the material, the protrusions on both sides can simultaneously push the small end and the large end of the reducer, thus preventing the pushing block 12 from tilting the reducer during the pushing process, so that the reducer enters the upper part slide 6 in a qualified posture.

[0039] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10The control circuit unit of this invention includes a control chip 20, a feeding position sensor 21, a through-beam sensor 15, and a full-load sensor 22. The signal input terminal of the control chip 20 is connected to the through-beam sensor 15, the track feeding position sensor 21, and the full-load sensor 22, while the signal output terminal is connected to the discharge cylinder 16, the rotary motor 13, the pusher cylinder 4, and the combing cylinder 11. The transmitter of the through-beam sensor 15 is located on one side of the starting end of the sorting track 24, and the receiver is located on the other side of the sorting track 24. The through-beam sensor 15 is an infrared through-beam sensor, which can detect the presence of a reducing pipe at the sorting track 24 in a static state by whether it is blocked or not. If the through-beam sensor 15 does not detect a reducing pipe, the control chip 20 drives the discharge cylinder 16, and the discharge push rod 17, driven by the discharge cylinder 16, pushes the reducing pipe in the discharge hopper 2, causing it to fall from the discharge hopper 2 to the starting end of the sorting track 24. The feeding position sensor 21 is installed at the end of the sorting track 24. This sensor is a proximity switch type, allowing for sensitive detection of whether a reducing pipe has reached its position during the dynamic process of the reducing pipe vibrating forward. The material full sensor 22 is installed on the upper chute 6 to detect whether a reducing pipe is on the upper chute 6. The control circuit unit operates as follows: when the through-beam sensor 15 does not detect a reducing pipe at the beginning of the sorting track 24, the control chip 20 controls the unloading cylinder 16 to operate, which drives the unloading push rod 17 to perform the unloading operation; when the feeding position sensor 21 detects a reducing pipe and the material full sensor 22 does not, the control chip 20 controls the rotary motor 13 to operate, controlling the reducing pipe to rotate from vertical to horizontal; the pushing cylinder 4 drives the pushing mechanism to perform the pushing operation; and the control chip 20 controls the combing cylinder 11 to periodically push, performing the combing operation.

[0040] The working process of this invention is as follows:

[0041] (A) The reducer enters the hopper 2 via the feeding bucket 1 and slides along the anti-sinking bottom 23 in the hopper 2 to the regulating gate. If the through-beam sensor 15 installed at the beginning of the sorting track 24 does not detect the reducer, the control chip 20 controls the feeding cylinder 16 to move the feeding push rod 17, pushing the reducer towards the regulating gate. The reducer then squeezes the elastic regulating gate 9, causing the elastic regulating gate 9 to deform elastically, and the reducer falls to the beginning of the sorting track 24. Then, the feeding push rod 17 retracts, and under the elastic action of the elastic regulating gate 9, the reducers that have not fallen will be pressed back into the feeding hopper 2.

[0042] (B) The reducer, discharged from the hopper 2, is blocked by the baffle plate 3 and falls to the starting end of the sorting track 24. Under the vibration of the linear vibrating feeder 14, the reducer is transported along the sorting track 24. Because the sorting track 24 is a V-shaped track, the reducer continuously adjusts its posture during transport to meet the requirements. Upon encountering the combing mechanism, reducers that do not meet the shape requirements cannot enter the fan-shaped holes 19 of the combing plate 10 and are pushed back to the starting end of the sorting track 24 by the combing mechanism driven by the combing cylinder 11. Reducers with the correct posture continue to move on the sorting track 24 through the fan-shaped holes 19. Furthermore, because the sorting track 24 is V-shaped, the posture of the reducer will not change during transport.

[0043] (C) When the reducer reaches the end of the sorting track 24, under the influence of gravity, the smaller end of the reducer enters the trough with its smaller end facing down. The smaller end rests on the damping plate 25, while the larger end faces up and is stuck in the upper part of the trough. The linear vibrating feeder 14 continues to transport the reducer forward through vibration until it reaches the very end of the sorting track 24. The damping plate 25 prevents the reducer from tilting forward or backward during vibration, ensuring that the reducer maintains a posture with the smaller end facing down and the larger end facing up while vibrating forward. Afterward, the reducer at the end of the trough is magnetically drawn into the container trough and held in place by a magnetic block.

[0044] (D) When the feeding position sensor 21 detects the reducer and the full material sensor 22 does not detect the reducer, the control chip 20 will control the rotary motor 13 to drive the fan block 5 through the disk 18 to rotate the reducer 90 degrees, so that it changes from vertical to horizontal and rises to a specified height. The pusher block 12 pushes the reducer from between the two horizontal fan blocks 5 to the inlet of the upper part chute 6 and enters the upper part chute 6.

Claims

1. A feeding device for reducing pipes, characterized in that: The system includes a feeding mechanism, a conveying mechanism, a transfer mechanism, and a pushing mechanism. The feeding mechanism and the transfer mechanism are located at the front and end of the conveying mechanism, respectively. The end of the conveying mechanism is provided with a recessed groove, the width of which is between the outer diameters of the large and small ends of the reducing pipe. The transfer mechanism includes a rotating component and a clamping component. The output end of the rotating component is perpendicular to the conveying mechanism. The output end of the rotating component is connected to the clamping component. The clamping component includes four fan-shaped blocks (5). The four fan-shaped blocks (5) are evenly distributed in a circular plate shape with the output end of the rotating component as the center and the arc edges facing outward. The gap between adjacent fan-shaped blocks (5) forms a receiving groove. The receiving groove can accommodate reducing pipes with the large and small ends in an up-down orientation, and the clamping component... When rotating, the four receiving slots are aligned with the end of the feeding mechanism in sequence; the receiving slots are also equipped with magnetic blocks; the pushing mechanism includes a pushing cylinder (4) and a pushing block (12); the pushing block (12) and the upper part slide (6) of the two-head tapping machine are located at both ends of the uppermost receiving slot of the clamping component; the side of the pushing block (12) away from the upper part slide (6) is connected to the output end of the pushing cylinder (4); the pushing block (12) has protrusions on both sides of the end facing the upper part slide; when there are protrusions on both sides, a "∪" or "︺" shaped structure is formed, the protrusion on the front end of the pushing block (12) is longer than the protrusion on the rear end of the feeding mechanism, and the length difference is half of the difference between the outer diameter of the large end and the small end of the reducer.

2. The reducing pipe feeding device according to claim 1, characterized in that: The bottom of the trough at the end of the conveying mechanism is also provided with a damping plate (25).

3. The reducing pipe feeding device according to claim 1 or 2, characterized in that: The material conveying mechanism includes a sorting track (24); the sorting track (24) is V-shaped or U-shaped.

4. The reducing pipe feeding device according to claim 3, characterized in that: The material conveying mechanism also includes a combing mechanism; the combing mechanism includes a combing cylinder (11) and a combing plate (10); the combing plate (10) is located above the material conveying track and is set perpendicular to the material transport direction; the combing plate (10) has a combing port (19) at the bottom; the combing port (19) allows the passage of a reducing pipe with its large and small ends set along the material transport direction; the output end of the combing cylinder (11) is connected to the combing plate (10) along the material transport direction.

5. A method for feeding a reducing pipe, using the reducing pipe feeding device described in claim 4, characterized in that; The method steps are as follows: (A) After the reducing pipe is transported to the end of the conveying mechanism, under the action of gravity, the small end enters the settling tank with the large end facing down and is stuck in the upper part of the settling tank with the large end facing up; the reducing pipe continues to be transported backward until it reaches the very end of the settling tank. (B) The clamping component clamps the vertical reducer, and the rotating component drives the clamping component to rotate 90 degrees around the output end, so that the direction of the large and small ends of the reducer changes from a vertical posture to a horizontal posture with the small end facing forward. (C) The pusher mechanism pushes the horizontally oriented reducer into the upper feeder (6) of the two-head tapping machine.

6. The method for feeding reducing pipes according to claim 5, characterized in that: In step (A), the reducing tube is vibrated and fed on the sorting track (24). During the feeding process, the posture of the reducing tube is adjusted by a V-shaped or U-shaped structure. The comb plate (10) moves towards the starting end of the feeding process under the drive of the comb cylinder (11). During the movement, the comb plate (10) pushes the reducing tube that cannot pass through the combing port (19) back to the starting end of the sorting track (24). The reducing tube that passes through the combing port (19) continues to be conveyed backward in a qualified posture.

7. The method for feeding reducing pipes according to claim 6, characterized in that: In step (C), the pusher cylinder (4) drives the pusher block (12) to move toward the upper part slide (6) of the two-head tapping machine, and the moving pusher block (12) sends the horizontally oriented reducer into the upper part slide (6).

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