A ductile iron pipe machining device

Abstract

The present invention discloses a mechanical processing device for ductile iron pipes, which relates to the technical field of ductile iron pipe production. A limit rod and a rotating rod are used to prevent the inner support mechanism from falling due to the loss of fixation on both the upper and lower sides caused by the placement of the iron pipe. The inner support plate is used to clamp the inner wall of the iron pipe. The adaptive inner support function reduces the complexity and labor intensity of manual operation. The operator only needs to perform simple equipment operation and monitoring, which reduces the work difficulty and labor intensity. The inner support plate is rotated by the driving disk, thereby rotating the iron pipe. The reciprocating screw rod is used to enable the grinding mechanism to grind the outer circumferential surface of the iron pipe from bottom to top. After grinding, the iron pipe is unfixed by the power gear, the rotating sleeve and the connecting rod, so as to facilitate the output of the iron pipe, reduce the contact between the operator and the equipment and the iron pipe during the grinding process, and reduce the risk of safety accidents caused by improper operation.

Description

Technical Field

[0001] The invention relates to the technical field of ductile iron pipe production, in particular to a ductile iron pipe machining device. Background Art

[0002] Traditionally, grinding the inner wall of ductile iron pipes involves attaching a long connecting rod to a motor drive shaft. A brush is mounted on one end of the connecting rod, which is then driven by the motor to rotate and gradually advance the brush inside the pipe. This method requires the connecting rod to be the same length as the pipe, resulting in a large grinding machine, occupying a large area, being heavy, and difficult to operate.

[0003] The patent with patent announcement number CN216503874U relates to the field of ductile iron pipe production technology. Specifically, it is a ductile iron pipe grinding and rotating structure, including a support frame, an anti-shake structure is provided on the support frame and is connected to multiple first support blocks, the anti-shake structure includes a support column, the support frame is connected to the support column, the support column is slidably connected to the slide rod, the slide rod is rotatably connected to the first connecting sleeve, the first connecting sleeve is connected to the connecting rod, the connecting rod is connected to the connecting column, the connecting column is connected to the outer cover, the outer cover is rotatably connected to multiple rollers, the multiple rollers are in contact with the cast iron pipe, the cast iron pipe is in contact with multiple guide wheels, and an electric push rod is connected between the support column and the slide rod; it is convenient to squeeze the cast iron pipe during grinding, effectively avoiding the cast iron pipe from jumping during the grinding process and affecting the grinding effect, ensuring the quality after grinding, and improving the stability during grinding.

[0004] In the above patent, the cast iron pipe is effectively prevented from vibrating during the grinding process and affecting the grinding effect, thereby ensuring the quality after grinding. However, the current equipment has the following problems: during the grinding process, due to the different sizes of the iron pipes, it may be necessary to frequently adjust the position and clamping force of the clamp to ensure the correct position of the iron pipe, which will further reduce work efficiency. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a ductile iron pipe machining device, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a ductile iron pipe machining device, comprising a fixed frame and an iron pipe, the iron pipe is arranged inside the fixed frame, the upper and lower inner walls of the fixed frame are rotatably mounted with rotating rods, and also includes a grinding device; wherein, the grinding device includes a limit rod, a pressure rod, a driving disk, a round rod, a fixed sleeve, an inner support plate, a chassis, a reciprocating screw and a grinding mechanism, the limit rods are slidably mounted on the inner walls of the rotating rods on both sides, the pressure rods are slidably mounted on the inner walls of the rotating rods on both sides, and the circumferential surface of the driving disk A first card slot is provided, the round rod is fixedly mounted on the output end of the driving disk, the fixed sleeve is fixedly mounted on the circumferential surface of the round rod, the inner support plate is slidably mounted on the inner wall of the fixed sleeve, the chassis is rotatably mounted on the bottom of the round rod, a second card slot is provided on the circumferential surface of the chassis, the reciprocating screw rod is arranged on the inner wall of the fixed frame, the grinding mechanism is threadedly mounted on the circumferential surface of the reciprocating screw rod, when the pipe moves, it contacts the inclined surface of the inner support plate, thereby compressing the No. 2 spring, and under the action of the No. 2 spring, the inner support plate clamps the inner wall of the iron pipe, and the position of the iron pipe is fixed at this time;

[0007] Wherein, the interior of the fixing frame is provided with a supporting device for assisting in grinding the iron pipe and an output device for automatically discharging the iron pipe.

[0008] The first and second card slots are limited by a limit rod, and both sides of the limit rod close to the card slot are set as inclined surfaces, and the side of the limit rod close to the pressure rod is set as an inclined surface. When the pressure rod moves downward, it will contact the inclined surface of the limit rod to make the limit rod disengage from the first card slot, and at the same time compress the No. 1 spring. A No. 1 torsion spring is provided between the rotating rod and the fixed frame, and the rotating rod is driven to reset by the No. 1 torsion spring. A No. 1 spring is provided between the limit rod and the rotating rod, and the limit rod is reset by the No. 1 spring. A No. 1 return spring is provided between the pressure rod and the rotating rod, and the pressure rod is reset by the No. 1 return spring. A No. 2 spring is provided between the fixed sleeve and the inner support plate, and the inner support plate is driven to lose the clamping effect by the No. 2 spring. The top of the inner support plate is set as an inclined surface, and the inner support plate is adaptive to the size of the inner wall of the iron pipe through the set inclined surface.

[0009] According to the above technical solution, the grinding device also includes a rotating sleeve, a power gear and a connecting rod. The rotating sleeve is sleeved on the circumferential surface of the round rod. The circumferential surface of the rotating sleeve is provided with a gear. The power gear is provided on the surface of the chassis. The power gear is engaged with the gear. One side of the connecting rod is rotatably installed on the surface of the inner support plate, and the other side of the connecting rod is rotatably installed on the top of the rotating sleeve. After the grinding is completed, the power gear rotates to drive the gear to rotate, so that the rotating sleeve rotates, the rotating sleeve rotates to drive the connecting rod to rotate, and the rotation of the connecting rod drives the inner support plate to shrink.

[0010] According to the above technical solution, the grinding device also includes a slide plate and a brake rod. The slide plate is fixedly installed on the inner wall of the fixed frame, one side of the brake rod is fixedly installed on the surface of the grinding mechanism, and the other side of the brake rod is slidably installed on the inner wall of the slide plate. The grinding mechanism drives the brake rod to move while moving.

[0011] According to the above technical solution, the supporting device includes a sliding rod and a brush plate. The sliding rod is slidably installed on the inner wall of the slide plate, and the brush plate is fixedly installed on the surface of the sliding rod. The movement of the sliding rod drives the brush plate to move, and the outer wall of the iron pipe is cleaned by the movement of the brush plate.

[0012] According to the above technical solution, the supporting device also includes a fixed block and a stabilizing plate. The fixed block is fixedly installed on the top of the grinding mechanism, and the stabilizing plate is slidably installed on the inner wall of the fixed block. A No. 3 spring is arranged between the stabilizing plate and the fixed block. The No. 3 spring enables the stabilizing plate to adapt to the radius of the iron pipe. The top of the stabilizing plate is set as an inclined plane, and a pulley is provided on the inner wall of the stabilizing plate. When the grinding mechanism moves, the fixed block is driven to move, and the movement of the fixed block drives the stabilizing plate to move.

[0013] According to the above technical solution, the output device includes a support plate, a triangular block, a driving rod and a limiting rod, the support plate is slidably mounted on the surface of the fixed frame, and a No. 4 spring is arranged between the support plate and the fixed frame, and the No. 4 spring enables the support plate to lose and gain support effect on the iron pipe, the triangular block is slidably mounted on the surface of the fixed frame, a No. 5 spring is arranged between the triangular block and the fixed frame, and the No. 5 spring resets the triangular block, the driving rod is slidably mounted on the inner wall of the slide plate, and a No. 6 spring is arranged between the driving rod and the slide plate, and the driving rod is driven to reset by the No. 6 spring, and the limiting rod is fixedly mounted on the bottom of the driving rod, and when the grinding mechanism moves to the top, the sliding rod contacts the driving rod, causing the driving rod to move upward, and the movement of the driving rod drives the limiting rod to move upward, and the movement of the limiting rod releases the No. 5 spring, causing the support plate to move out of support for the bottom of the iron pipe, and the iron pipe will slide down at this time.

[0014] According to the above technical solution, the output device also includes a discharge cylinder, a rubber block and a hydraulic rod. The discharge cylinder is fixedly installed on the inner wall of the fixed frame, and the rubber block is rotatably installed on the inner wall of the discharge cylinder. A No. 2 torsion spring is arranged between the rubber block and the discharge cylinder. The No. 2 torsion spring enables the rubber block to buffer the output of the iron pipe. The hydraulic rod is arranged on the surface of the fixed frame, and a rubber plate is arranged on the top of the hydraulic rod. When the iron pipe slides, it will contact the rubber block and buffer the falling of the iron pipe under the action of the No. 2 torsion spring, and finally contact the rubber plate and be buffered by the hydraulic rod.

[0015] The present invention provides a ductile iron pipe machining device, which has the following beneficial effects:

[0016] (1) This invention, through the setting of the grinding device, prevents the upper and lower sides of the iron pipe from losing their fixation and causing the internal support mechanism to fall due to the placement of the iron pipe through the limit rod and the rotating rod, and clamps the inner wall of the iron pipe through the internal support plate. The adaptive internal support function reduces the complexity and labor intensity of manual operation. The operator only needs to perform simple equipment operation and monitoring, which reduces the difficulty and labor intensity of work. The internal support plate is rotated by the driving disk, thereby rotating the iron pipe. The grinding mechanism grinds the outer circumference of the iron pipe from bottom to top through the reciprocating screw. After grinding, the iron pipe is unfixed through the power gear, rotating sleeve, and connecting rod to facilitate the output of the iron pipe, reducing the operator's contact with the equipment and the iron pipe during the grinding process, and reducing the risk of safety accidents caused by improper operation. (2) This invention, through the setting of the support device, cleans the outer wall of the iron pipe by moving the brush plate when the grinding mechanism is grinding. A large amount of iron filings and debris will be generated during the grinding process. If these debris are not removed in time, they may be embedded in the surface of the iron pipe, affecting the surface quality of the iron pipe and subsequent processing. When the grinding mechanism moves, it drives the stabilizing plate to adaptively support the outer circumferential surface of the iron pipe. The support can keep the iron pipe stable during the grinding process, reduce problems such as uneven grinding or scratches caused by the shaking of the iron pipe, and thus improve the grinding accuracy and surface quality. (3) This invention, through the setting of the output device, supports the bottom of the iron pipe through the support plate. When the grinding mechanism moves to the top, the support plate moves away from the support of the bottom of the iron pipe. At this time, the iron pipe will slide down. In the process of the iron pipe automatically sliding down and output after grinding, the direct contact between personnel and the iron pipe is reduced, and the risk of injury to personnel caused by factors such as high temperature and sharp edges of the iron pipe surface is reduced. When the iron pipe slides, it will contact the rubber block and cushion the fall of the iron pipe under the action of the No. 2 torsion spring, and finally contact the rubber plate and cushion it through the hydraulic rod, preventing the iron pipe from falling directly and causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the position structure of the inner support plate and the stabilizing plate of the present invention;

[0019] Figure 3 For the present invention Figure 2 A schematic diagram of the structure of part A in the middle;

[0020] Figure 4 This is a schematic diagram of the position structure of the lower rotating rod and the chassis of the present invention;

[0021] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure of part B;

[0022] Figure 6 This is a schematic diagram of the position structure of the limit rod and the driving disk of the present invention;

[0023] Figure 7 This is a schematic diagram of the position structure of the sliding rod and the brush plate of the present invention;

[0024] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure of part C in the middle;

[0025] Figure 9 This is a schematic diagram of the position structure of the rubber block and the output tube of the present invention.

[0026] In the figure: 1. Fixed frame; 01. Iron pipe; 2. Rotating rod; 3. Limit rod; 4. Pressure rod; 5. Drive plate; 6. Round rod; 7. Fixed sleeve; 8. Inner support plate; 9. Chassis; 10. Rotating sleeve; 11. Power gear; 12. Connecting rod; 13. Reciprocating screw; 14. Grinding mechanism; 15. Slide plate; 16. Brake rod; 20. Sliding rod; 21. Brush plate; 22. Fixed block; 23. Stabilizing plate; 30. Support plate; 31. Triangular block; 32. Drive rod; 33. Limiting rod; 34. Discharge barrel; 35. Rubber block; 36. Hydraulic rod. DETAILED DESCRIPTION

[0027] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] See also Figures 1-6 One embodiment of the present invention is: a ductile iron pipe machining device, including a fixed frame 1 and an iron pipe 01, the iron pipe 01 is arranged inside the fixed frame 1, and the upper and lower inner walls of the fixed frame 1 are rotatably mounted with a rotating rod 2, and also includes a grinding device; wherein the grinding device includes a limit rod 3, a pressure rod 4, a driving disk 5, a round rod 6, a fixed sleeve 7, an inner support plate 8, a chassis 9, a reciprocating screw 13 and a grinding mechanism 14, the limit rod 3 is slidably mounted on the inner wall of the rotating rod 2 on both sides, the pressure rod 4 is slidably mounted on the inner wall of the rotating rod 2 on both sides, and the circumferential surface of the driving disk 5 A card slot 1 is opened, the round rod 6 is fixedly installed on the output end of the driving disk 5, the fixed sleeve 7 is fixedly installed on the circumferential surface of the round rod 6, the inner support plate 8 is slidably installed on the inner wall of the fixed sleeve 7, and the chassis 9 is rotatably installed at the bottom of the round rod 6. A card slot 2 is opened on the circumferential surface of the chassis 9, the reciprocating screw rod 13 is arranged on the inner wall of the fixed frame 1, and the grinding mechanism 14 is threadedly installed on the circumferential surface of the reciprocating screw rod 13. The adaptive internal support function reduces the complexity and labor intensity of manual operation. The operator only needs to perform simple equipment operation and monitoring, which reduces the difficulty and labor intensity of work.

[0029] Both slot 1 and slot 2 are limited by the limit rod 3. The two sides of the limit rod 3 close to the slot are set as inclined surfaces. The side of the limit rod 3 close to the pressure rod 4 is set as an inclined surface. A No. 1 torsion spring is provided between the rotating rod 2 and the fixed frame 1, and the rotating rod 2 is reset by the No. 1 torsion spring. A No. 1 spring is provided between the limit rod 3 and the rotating rod 2, and the limit rod 3 is reset by the No. 1 spring. A No. 1 return spring is provided between the pressure rod 4 and the rotating rod 2, and the pressure rod 4 is reset by the No. 1 return spring. A No. 2 spring is provided between the fixed sleeve 7 and the inner support plate 8, and the No. 2 spring drives the inner support plate 7 to lose the clamping effect. The top of the inner support plate 8 is set as an inclined surface. The set inclined surface makes the inner support plate 8 adapt to the size of the inner wall of the iron pipe 01.

[0030] The grinding device also includes a rotating sleeve 10, a power gear 11 and a connecting rod 12. The rotating sleeve 10 is sleeved on the circumferential surface of the round rod 6. The circumferential surface of the rotating sleeve 10 is provided with gears. The power gear 11 is provided on the surface of the chassis 9. The power gear 11 is engaged with the gears. One side of the connecting rod 12 is rotatably installed on the surface of the inner support plate 8, and the other side of the connecting rod 12 is rotatably installed on the top of the rotating sleeve 10, so that the iron pipe 01 loses its fixation to facilitate the output of the iron pipe 01, reducing the operator's contact with the equipment and the iron pipe 01 during the grinding process, and reducing the risk of safety accidents caused by improper operation.

[0031] The grinding device also includes a slide plate 15 and a brake rod 16. The slide plate 15 is fixedly installed on the inner wall of the fixed frame 1, one side of the brake rod 16 is fixedly installed on the surface of the grinding mechanism 14, and the other side of the brake rod 16 is slidably installed on the inner wall of the slide plate 15. The slide plate 15 enables the grinding mechanism 14 to move smoothly.

[0032] When the embodiment is working, the iron pipe 01 is placed vertically into the fixing frame 1. At this time, the outer wall of the iron pipe 01 will contact the pressure rod 4, causing the pressure rod 4 to move downward and compress the No. 1 return spring. The pressure rod 4 moves downward and contacts the inclined surface of the limit rod 3, causing the limit rod 3 to disengage from the card slot 1 and compress the No. 1 spring. After the limit rod 3 is disengaged, it continues to move through the iron pipe 01, causing the rotating rod 2 to rotate downward and compress the No. 1 torsion spring until the rotating rod 2 is no longer in contact with the iron pipe 01 and is reset through the No. 1 torsion spring. When resetting, the inclined surface of the limiting rod 3 contacts the circumferential surface of the driving disk 5, so that under the action of the No. 1 spring, the limiting rod 3 is clamped into the card slot 1, completing the fixation of the driving disk 5. When the driving disk 5 loses its fixation, the chassis 9 is fixed by the same structure at the lower rotating rod 2 to prevent the inner support mechanism from falling due to the loss of fixation on both the upper and lower sides due to the placement of the iron pipe 01. When the iron pipe 01 moves, it will contact the inclined surface of the inner support plate 8, thereby compressing the No. 2 spring, and under the action of the No. 2 spring, the inner support plate 8 is pressed against the iron pipe. 01 is clamped on the inner wall. At this time, the position of the iron pipe 01 is fixed. The adaptive internal support function reduces the complexity and labor intensity of manual operation. The operator only needs to perform simple equipment operation and monitoring, which reduces the difficulty and labor intensity of work. At this time, the output end of the driving disc 5 rotates to drive the round rod 6 to rotate, and the rotation of the round rod 6 drives the fixed sleeve 7 to rotate. The rotation of the fixed sleeve 7 drives the inner support plate 8 to rotate, thereby rotating the iron pipe 01. Then, the reciprocating screw 13 is used to make the grinding mechanism 14 grind the outer circumference of the iron pipe 01 from bottom to top. The grinding mechanism 14 drives the brake rod 16 to move while moving. After the grinding is completed, the power gear 11 rotates to drive the gear rotation to rotate the rotating sleeve 10. The rotation of the rotating sleeve 10 drives the connecting rod 12 to rotate. The rotation of the connecting rod 12 drives the inner support plate 8 to shrink, thereby making the iron pipe 01 lose its fixation, so as to facilitate the output of the iron pipe 01, reduce the operator's contact with the equipment and the iron pipe 01 during the grinding process, and reduce the risk of safety accidents caused by improper operation.

[0033] See also Figures 1-9 On the basis of the above embodiment, in another embodiment of the present invention, there is a supporting device inside the fixed frame 1 for assisting in the grinding of the iron pipe 01 and an output device for automatically discharging the iron pipe 01. The supporting device includes a sliding rod 20 and a brush plate 21. The sliding rod 20 is slidably mounted on the inner wall of the slide plate 15, and the brush plate 21 is fixedly mounted on the surface of the sliding rod 20. The outer wall of the iron pipe 01 is cleaned by moving the brush plate 21. A large amount of iron filings and debris will be generated during the grinding process. If these debris are not removed in time, they may be embedded in the surface of the iron pipe 01, affecting the surface quality of the iron pipe 01 and subsequent processing.

[0034] The supporting device also includes a fixed block 22 and a stabilizing plate 23. The fixed block 22 is fixedly mounted on the top of the grinding mechanism 14, and the stabilizing plate 23 is slidably mounted on the inner wall of the fixed block 22. A No. 3 spring is arranged between the stabilizing plate 23 and the fixed block 22. The No. 3 spring enables the stabilizing plate 23 to adapt to the radius of the iron pipe 01. The top of the stabilizing plate 23 is set as an inclined plane, and a pulley is provided on the inner wall of the stabilizing plate 23. The support can keep the iron pipe 01 stable during the grinding process, reduce problems such as uneven grinding or scratches caused by the shaking of the iron pipe 01, thereby improving the grinding accuracy and surface quality.

[0035] The output device includes a support plate 30, a triangular block 31, a driving rod 32 and a limiting rod 33. The support plate 30 is slidably installed on the surface of the fixed frame 1. A No. 4 spring is arranged between the support plate 30 and the fixed frame 1. The No. 4 spring enables the support plate 30 to lose and gain support effect on the iron pipe 01. The triangular block 31 is slidably installed on the surface of the fixed frame 1. A No. 5 spring is arranged between the triangular block 31 and the fixed frame 1. The No. 5 spring resets the triangular block 32. The driving rod 32 is slidably installed on the inner wall of the slide plate 15. A No. 6 spring is arranged between the driving rod 32 and the slide plate 15. The No. 6 spring drives the driving rod 32 to reset. The limiting rod 33 is fixedly installed at the bottom of the driving rod 32, which reduces direct contact between personnel and the iron pipe 01, and reduces the risk of injury to personnel caused by factors such as high temperature and sharp edges on the surface of the iron pipe 01.

[0036] The output device also includes a discharge cylinder 34, a rubber block 35 and a hydraulic rod 36. The discharge cylinder 34 is fixedly mounted on the inner wall of the fixed frame 1, and the rubber block 35 is rotatably mounted on the inner wall of the discharge cylinder 34. A No. 2 torsion spring is arranged between the rubber block 35 and the discharge cylinder 34. The No. 2 torsion spring allows the rubber block 35 to buffer the output of the iron pipe 01. The hydraulic rod 36 is arranged on the surface of the fixed frame 1, and a rubber plate is arranged on the top of the hydraulic rod 36 to prevent the iron pipe 01 from falling directly and causing damage.

[0037] When the grinding mechanism 14 is working, the brake rod 16 moves to contact the sliding rod 20, so that the sliding rod 20 moves upward, and the sliding rod 20 moves to drive the brush plate 21 to move, and the outer wall of the iron pipe 01 is cleaned by the movement of the brush plate 21. A large amount of iron filings and debris will be generated during the grinding process. If these debris are not removed in time, they may be embedded in the surface of the iron pipe 01, affecting the surface quality of the iron pipe 01 and subsequent processing. When the grinding mechanism 14 moves, it drives the fixed block 22 to move, and the fixed block 22 moves to drive the stabilizing plate 23 to move. When the iron pipe 01 is placed, the outer wall of the iron pipe 01 contacts the inclined surface of the stabilizing plate 23, so that the stabilizing plate 23 moves and compresses the No. 3 spring at the same time. Under the action of the No. 3 spring, the stabilizing plate 23 drives the pulley to adaptively support the outer circumferential surface of the iron pipe 01. The support can keep the iron pipe 01 stable during the grinding process, reduce the problems such as uneven grinding or scratches caused by the shaking of the iron pipe 01, thereby improving the grinding accuracy and surface quality.

[0038] The initial state of the No. 5 spring at the triangular block 31 is a compressed state. The iron pipe 01 is placed on the top of the support plate 30, and the bottom of the iron pipe 01 is supported by the support plate 30. When the grinding mechanism 14 moves to the top, the sliding rod 20 contacts the driving rod 32, causing the driving rod 32 to move upward. The movement of the driving rod 32 drives the limiting rod 33 to move upward. The movement of the limiting rod 33 releases the No. 5 spring, causing the support plate 30 to move away from the support of the bottom of the iron pipe 01. At this time, the iron pipe 01 will slide down. In the process of automatic sliding output of the iron pipe 01 after grinding, the direct contact between personnel and the iron pipe 01 is reduced, and the risk of injury to personnel caused by factors such as the high temperature and sharp edges of the iron pipe 01 surface is reduced. When the iron pipe 01 slides, it will contact the rubber block 35 and cushion the fall of the iron pipe 01 under the action of the No. 2 torsion spring, and finally contact the rubber plate and cushion it through the hydraulic rod 36 to prevent the iron pipe 01 from falling directly and causing damage.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A ductile iron pipe machining device, comprising a fixing frame (1) and an iron pipe (01), characterized in that: The iron pipe (01) is arranged inside the fixing frame (1), and the upper and lower inner walls of the fixing frame (1) are both rotatably mounted with rotating rods (2), and also include a grinding device; The grinding device comprises a limit rod (3), a pressure rod (4), a driving disc (5), a round rod (6), a fixed sleeve (7), an inner support plate (8), a chassis (9), a reciprocating screw (13) and a grinding mechanism (14), wherein the limit rod (3) is slidably mounted on the inner walls of the rotating rods (2) on both sides, the pressure rod (4) is slidably mounted on the inner walls of the rotating rods (2) on both sides, a first card slot is provided on the circumferential surface of the driving disc (5), the round rod (6) is fixedly mounted on the output end of the driving disc (5), the fixed sleeve (7) is fixedly mounted on the circumferential surface of the round rod (6), the inner support plate (8) is slidably mounted on the inner wall of the fixed sleeve (7), the chassis (9) is rotatably mounted on the bottom of the round rod (6), the circumferential surface of the chassis (9) is provided with a second card slot, the reciprocating screw (13) is arranged on the inner wall of the fixed frame (1), and the grinding mechanism (14) is threadedly mounted on the circumferential surface of the reciprocating screw (13); Wherein, the interior of the fixing frame (1) is provided with a supporting device for assisting in grinding the iron pipe (01) and an output device for automatically discharging the iron pipe (01); Both sides of the limiting rod (3) close to the card slot are set as inclined surfaces, and the side of the limiting rod (3) close to the pressure rod (4) is set as an inclined surface. A No. 1 torsion spring is provided between the rotating rod (2) and the fixing frame (1), a No. 1 spring is provided between the limiting rod (3) and the rotating rod (2), a No. 1 return spring is provided between the pressure rod (4) and the rotating rod (2), a No. 2 spring is provided between the fixing sleeve (7) and the inner support plate (8), and the top of the inner support plate (8) is set as an inclined surface; The grinding device further comprises a rotating sleeve (10), a power gear (11) and a connecting rod (12), wherein the rotating sleeve (10) is sleeved on the circumferential surface of the round rod (6), a gear is provided on the circumferential surface of the rotating sleeve (10), the power gear (11) is provided on the surface of the chassis (9), the power gear (11) is meshed with the gear, one side of the connecting rod (12) is rotatably mounted on the surface of the inner support plate (8), and the other side of the connecting rod (12) is rotatably mounted on the top of the rotating sleeve (10); The grinding device further comprises a chute plate (15) and a brake rod (16), wherein the chute plate (15) is fixedly mounted on the inner wall of the fixing frame (1), one side of the brake rod (16) is fixedly mounted on the surface of the grinding mechanism (14), and the other side of the brake rod (16) is slidably mounted on the inner wall of the chute plate (15); The supporting device comprises a sliding rod (20) and a brush plate (21), wherein the sliding rod (20) is slidably mounted on the inner wall of the chute plate (15), and the brush plate (21) is fixedly mounted on the surface of the sliding rod (20); The supporting device further comprises a fixed block (22) and a stabilizing plate (23), wherein the fixed block (22) is fixedly mounted on the top of the grinding mechanism (14), and the stabilizing plate (23) is slidably mounted on the inner wall of the fixed block (22), a No. 3 spring is provided between the stabilizing plate (23) and the fixed block (22), the top of the stabilizing plate (23) is provided as an inclined plane, and a pulley is provided on the inner wall of the stabilizing plate (23).

2. The ductile iron pipe machining device according to claim 1, characterized in that: The output device includes a support plate (30), a triangular block (31), a driving rod (32) and a limiting rod (33), wherein the support plate (30) is slidably mounted on the surface of the fixing frame (1), a No. 4 spring is provided between the support plate (30) and the fixing frame (1), the triangular block (31) is slidably mounted on the surface of the fixing frame (1), a No. 5 spring is provided between the triangular block (31) and the fixing frame (1), the driving rod (32) is slidably mounted on the inner wall of the chute plate (15), a No. 6 spring is provided between the driving rod (32) and the chute plate (15), and the limiting rod (33) is fixedly mounted on the bottom of the driving rod (32).

3. The ductile iron pipe machining device according to claim 2, characterized in that: The output device further comprises a discharge cylinder (34) and a rubber block (35), wherein the discharge cylinder (34) is fixedly mounted on the inner wall of the fixed frame (1), and the rubber block (35) is rotatably mounted on the inner wall of the discharge cylinder (34), and a No. 2 torsion spring is provided between the rubber block (35) and the discharge cylinder (34).

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