A small-bore steel pipe fixed-length cutting feeding and surplus and waste material processing device and method thereof

Abstract

This invention provides a feeding and waste / excess material processing device and method for fixed-length cutting of small-diameter steel pipes, belonging to the field of mechanical manufacturing technology. The device includes a feeding mechanism, a sawing machine, a waste / excess material hopper, a sorting mechanism, and a control system. The feeding mechanism is used for feeding, measuring, spectral detection, and conveying the raw material pipes. The sawing machine is used for fixed-length cutting of the conveyed raw material pipes. The waste / excess material hopper is arranged on one side of the feeding mechanism to collect long excess material and spectral-detected defective material. The sorting mechanism is arranged on the unloading channel downstream of the sawing machine to sort short excess material and waste material. The feeding mechanism, sawing machine, hopper, and sorting mechanism are all connected to the control system. This device enables automated production, reduces worker involvement, effectively improves production efficiency, and saves time and labor.

Description

Technical Field

[0001] This invention belongs to the field of mechanical manufacturing technology, and in particular relates to a feeding device and method for fixed-length cutting of small-diameter steel pipes and the treatment of surplus and waste materials. Background Technology

[0002] The raw material pipes produced by steel mills are generally 9-13 meters in length. After purchase, the user unit cuts different lengths of pipe sections from the raw material pipes according to the product requirements. Traditionally, raw material pipes are cut using a single pipe cutting machine. Workers use a crane to lift the raw material pipes onto the material rack of the pipe cutting machine. The turning mechanism on the material rack is manually controlled to turn the pipes onto the conveyor rollers, and then the rollers are controlled to send the pipes to the cutting equipment. The feeding length is manually controlled. After the pipe sections are cut, the remaining scrap and waste are manually removed and disposed of separately. The length of the raw material pipes is not measured. Spectroscopic testing is performed manually using a handheld spectrometer before cutting. The manufacturing process is complex, the steps are scattered, it relies on manual labor, and is time-consuming and labor-intensive. Summary of the Invention

[0003] In view of this, in order to solve the above problems, the present invention proposes a feeding device and method for fixed-length cutting of small-diameter steel pipes and the treatment of surplus and waste materials.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A device for feeding and processing surplus and waste materials of small-diameter steel pipes for fixed-length cutting includes: The feeding mechanism is used for feeding, measuring, spectral detection, and conveying raw material pipes. A saw is used to cut raw material pipes to a fixed length. The hopper for misfit material and excess material is located on one side of the feeding mechanism and is used to collect excess material and misfit material that fails the spectral detection. The sorting mechanism is located on the material feeding channel downstream of the sawing machine and is used to sort short scraps and waste materials. The control system, feeding mechanism, sawing machine, misaligned and long-overflow hopper, and sorting mechanism are all connected to the control system.

[0005] As a preferred embodiment of the above-mentioned small-diameter steel pipe fixed-length cutting feeding and waste material handling device, the feeding mechanism includes an intermediate material rack, a transition roller conveyor, a transmission roller conveyor, a material guide plate, a length measuring mechanism, and a spectral detection device. The transition roller conveyor, transmission roller conveyor, and material guide plate are all set on the intermediate material rack. The length measuring mechanism is used to measure the length of the raw material pipe located on the transition roller conveyor. The spectral detection device is used to perform spectral detection on the raw material pipe located on the transition roller conveyor. The material guide plate is used to guide the raw material pipe from the transition roller conveyor to the transmission roller conveyor or from the transition roller conveyor to the waste material hopper. The transmission roller conveyor has an active conveying function, which can realize the forward feeding and reverse retraction of the raw material pipe.

[0006] As a preferred embodiment of the above-mentioned small-diameter steel pipe fixed-length cutting feeding and waste material processing device, the feeding mechanism further includes a driving mechanism, which is used to drive the length measuring mechanism to move along the axial direction of the raw material pipe. The driving mechanism includes a servo motor and a gear rack structure, and the servo motor drives the gear rack structure to move the length measuring mechanism.

[0007] As a preferred embodiment of the above-mentioned small-diameter steel pipe fixed-length cutting feeding and waste material treatment device, the spectral detection device includes a grinding device and a laser spectrometer. The grinding device is used to grind the end face of the raw material pipe to ensure that the laser spectrometer can excite the material composition of the raw material pipe. The laser spectrometer analyzes the excited material composition, transmits the data back to the control system, and compares it with the material composition stored in the control system to verify whether the material of the raw material pipe is correct.

[0008] As a preferred embodiment of the above-mentioned small-diameter steel pipe fixed-length cutting feeding and waste material handling device, the intermediate material rack is also provided with a positioning baffle, which is used to position the raw material pipe located on the transition roller table.

[0009] As a preferred embodiment of the above-mentioned small-diameter steel pipe fixed-length cutting feeding and waste material treatment device, the intermediate material rack is also provided with a clamping device, which is used to fix the raw material pipe during length measurement and spectral detection.

[0010] As a preferred embodiment of the above-mentioned small-diameter steel pipe fixed-length cutting feeding and waste material treatment device, the feeding mechanism further includes a storage hopper, which is located on one side of the intermediate material rack and is used to store raw material pipes.

[0011] As a preferred embodiment of the above-mentioned feeding and waste / excess material handling device for fixed-length cutting of small-diameter steel pipes, the misaligned material and long excess material hopper includes a long excess material hopper, a misaligned material hopper, and a partitioned discharge baffle. The long excess material hopper and the misaligned material hopper are arranged side by side, with the long excess material hopper located between the conveyor roller and the misaligned material hopper. The partitioned discharge baffle has a retracted state and an open state. When the partitioned discharge baffle is in the open state, it blocks the opening above the long excess material hopper, and the misaligned material rolls into the misaligned material hopper after being blocked by the partitioned discharge baffle. When the partitioned discharge baffle is in the retracted state, the opening above the long excess material hopper is open, and the long excess material falls into the long excess material hopper.

[0012] As a preferred embodiment of the above-mentioned small-diameter steel pipe fixed-length cutting feeding and surplus / waste material handling device, the sorting mechanism includes a pushing moving beam, a short surplus hopper and a waste bin. The short surplus hopper and the waste bin are respectively arranged on the left and right sides of the pushing moving beam. The pushing moving beam is located above the sawing machine unloading channel and is set to move left and right, used to push the short surplus material into the short surplus hopper or push the waste material into the waste bin.

[0013] The present invention also provides a method for feeding and processing surplus and waste materials of small-diameter steel pipes for fixed-length cutting. The method adopts the above-mentioned feeding and processing device for small-diameter steel pipes for fixed-length cutting. The feeding mechanism includes a storage hopper, an intermediate material rack, a transition roller conveyor, a transmission roller conveyor, a material guide plate, a length measuring mechanism, and a spectral detection device (19). The intermediate material rack is also provided with a positioning baffle and a clamping device. The misaligned material and long surplus material hopper includes a long surplus material hopper, a misaligned material hopper, and a partitioned discharge baffle. The sorting mechanism includes a pushing moving beam, a short surplus material hopper, and a waste bin. The specific operating steps include: S1: Place a bundle of raw material pipes onto the storage hopper; S2: Each time, one tube is lifted to the transition roller conveyor of the intermediate material rack. The transition roller conveyor drives the tube forward, the positioning baffle positions it, and the clamping device clamps the tube to fix it. At this time, the length measuring mechanism measures the length, and the spectral detection device cleans and performs spectral detection on the tube end. The tube that passes the inspection proceeds to S3; the tube that fails the inspection proceeds to S4. S3: The qualified pipes are pushed to the conveyor rollers by the feeding plate. The conveyor rollers send the pipes to the saw for fixed-length cutting. The control system automatically calculates and judges whether the remaining material is long material, short material or waste material based on the measured length of the raw material pipe and the size and quantity of the fixed-length cutting. The long material is returned to the feeding mechanism and fed into the long material hopper. The short material and waste material continue to be conveyed forward from the saw. The moving beam pushes the short material or waste material into the short material hopper or waste box respectively. S4: When a defective tube is detected by spectral detection on the transition roller conveyor, the partition discharge baffle opens, blocking the long excess hopper, causing the defective tube to roll from the intermediate material rack over the partition discharge baffle and fall into the misfit hopper.

[0014] Compared with the prior art, the beneficial effects of the device and method for feeding and processing surplus and waste materials of small-diameter steel pipes for fixed-length cutting provided by the present invention are as follows: This invention provides a feeding and waste / surplus material processing device for fixed-length cutting of small-diameter steel pipes. This device fully integrates the raw material pipe feeding, length measurement, spectral detection for material confirmation, fixed-length cutting, and waste / surplus material processing into a production line. It intelligently controls the processing, automates production, and achieves a higher degree of automation. This reduces the need for manual labor, lowers labor costs and labor intensity, effectively improves production efficiency, and saves time and effort. Attached Figure Description

[0015] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the structure of the small-diameter steel pipe fixed-length cutting feeding and waste material treatment device provided in a specific embodiment of the present invention; Figure 2 This is a schematic diagram of the feeding mechanism of the small-diameter steel pipe fixed-length cutting feeding and waste material treatment device provided in a specific embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the feeding and waste material handling device for fixed-length cutting of small-diameter steel pipes provided in a specific embodiment of the present invention, showing the misaligned material and long waste material hopper. Figure 4 This is a schematic diagram of the sorting mechanism of the small-diameter steel pipe fixed-length cutting feeding and waste material processing device provided in a specific embodiment of the present invention.

[0016] In the picture: 1. Feeding mechanism; 11. Storage hopper; 12. Intermediate material rack; 13. Transition roller conveyor; 14. Conveyor roller conveyor; 15. Material feeding plate; 16. Length measuring mechanism; 17. Clamping device; 18. Positioning baffle; 19. Spectral detection device; 2. Misaligned and oversized hoppers; 21. Oversized hoppers; 22. Misaligned hoppers; 23. Zoned discharge baffles; 3. Sawing machine; 4. Sorting mechanism; 41. Pushing moving beam; 42. Shortage hopper; 43. Waste bin. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0018] See Figure 1-4 This invention provides a feeding and waste / excess material processing device and method for fixed-length cutting of small-diameter steel pipes. The device includes: a feeding mechanism 1, a sawing machine 3, a hopper for misaligned and excessive materials 2, a sorting mechanism 4, and a control system. The feeding mechanism 1 is used for feeding, measuring, spectrally detecting, and conveying raw material pipes. The sawing machine 3 is used for fixed-length cutting of the conveyed raw material pipes. The hopper for misaligned and excessive materials 2 is arranged on one side of the feeding mechanism 1 to collect excessive materials and misaligned materials that fail spectral detection. The sorting mechanism 4 is arranged on the unloading channel downstream of the sawing machine 3 to sort short materials and waste materials. The feeding mechanism 1, sawing machine 3, hopper for misaligned and excessive materials 2, and sorting mechanism 4 are all connected to the control system.

[0019] This small-diameter steel pipe length-cutting feeding and waste / surplus material handling device integrates feeding, conveying, length measurement, spectral detection, length-cutting, and waste / surplus material handling onto a single intelligent production line. The production process is as follows: A bundle of raw material pipes is placed on the feeding mechanism 1. After length measurement and spectral detection on the feeding mechanism 1, the raw material pipes are conveyed by roller conveyor to the sawing machine 3 for length-cutting. The resulting surplus material, waste material, and misaligned material are sorted and discharged in designated areas. The operation of each node is controlled as a whole by the control system program.

[0020] The lengths of excess material, short excess material, and waste material are manually set. Excess material and short excess material refer to the remaining portion of the raw material tube that can still be used in other products after cutting. Waste material refers to the remaining portion that cannot be used in other products after cutting. The lengths of excess material, short excess material, and incorrect material are defined according to product requirements. Incorrect material refers to raw material tubes that fail spectral testing. During production, the program in the control system automatically determines excess material, short excess material, and waste material and performs sorting processing.

[0021] In this embodiment, the feeding mechanism 1 includes an intermediate material rack 12, a transition roller conveyor 13, a transmission roller conveyor 14, a material guide plate 15, a length measuring mechanism 16, and a spectral detection device 19. The transition roller conveyor 13, the transmission roller conveyor 14, and the material guide plate 15 are all mounted on the intermediate material rack 12. The length measuring mechanism 16 is used to measure the length of the raw material tube located on the transition roller conveyor 13. The spectral detection device 19 is used to perform spectral detection on the raw material tube located on the transition roller conveyor 13. The material guide plate 15 is used to guide the raw material tube from the transition roller conveyor 13 to the transmission roller conveyor 14 or from the transition roller conveyor 13 to the misaligned material and excess material hopper 2. The transmission roller conveyor 14 has an active conveying function, which can realize the forward feeding and reverse retraction of the raw material tube. The intermediate material rack 12 is also provided with a positioning baffle 18, which is used to position the raw material tube located on the transition roller conveyor 13. The intermediate material rack 12 is also provided with a clamping device 17, which is used to fix the raw material tube during length measurement and spectral detection. The feeding mechanism 1 also includes a storage hopper 11, which is located on one side of the intermediate material rack 12 and is used to store raw material pipes.

[0022] In this embodiment, the feeding mechanism 1 further includes a driving mechanism, which drives the length measuring mechanism 16 to move axially along the raw material tube. The driving mechanism includes a servo motor and a gear rack structure, with the servo motor driving the gear rack structure to move the length measuring mechanism 16.

[0023] In this embodiment, the spectral detection device 19 includes a grinding device and a laser spectrometer. The grinding device is used to grind the end face of the raw material tube to ensure that the laser spectrometer can excite the material composition of the raw material tube. The laser spectrometer analyzes the excited material composition and transmits the data back to the control system. The data is compared with the material composition stored in the control system to verify whether the material of the raw material tube is correct.

[0024] The storage hopper 11 is used for storing and placing raw material pipes. A pipe lifting device is installed on the storage hopper 11 to lift the pipes from the storage hopper 11 to the intermediate material rack 12.

[0025] The transition roller conveyor 13 is used for storing and positioning raw material tubes during length measurement and spectral detection. After the tubes are lifted from the storage rack onto the transition roller conveyor 13, they are clamped and fixed by the hydraulic clamping device 17. The length measuring device is driven by a servo to measure the length. The cleaning device of the spectral detection device 19 cleans the tube ends. Then, the laser spectral detector is in place to perform spectral detection. After the length measurement and spectral detection are completed, the material feeding plate 15 moves the tubes from the transition roller conveyor 13 to the transmission roller conveyor 14.

[0026] The rollers on the conveyor roller 14 have a driving force and can rotate forward and backward to feed and retract the pipe. When rotating forward, the pipe is fed into the saw 3 for cutting. When rotating backward, the remaining long material after cutting is brought back to the transition roller 13, and the material guide plate 15 then guides the pipe to the long material hopper 21.

[0027] The length measuring mechanism 16 is driven by a servo motor and a gear and rack mechanism to move along the axial direction of the raw material tube. The length measuring function is achieved by limiting the front and rear of the raw material tube. The length measuring mechanism 16 automatically feeds back the measurement results to the control system for verification of the input raw material tube length or for material feeding for matching production.

[0028] The clamping device 17 is used for fixing the pipe during length measurement and cleaning.

[0029] The baffle is used to position the front end of the pipe when it is fed in.

[0030] The spectral detection device 19 includes a grinding device and a laser spectrometer. After the tube is positioned on the transition roller conveyor 13, the grinding device grinds the end face of the tube to remove surface impurities, ensuring that the laser spectrometer can excite the material composition. The laser spectrometer analyzes the excited material composition and transmits the data back to the control system. The data is compared with the material composition stored in the control system to verify the correctness of the raw material and avoid selecting the wrong material.

[0031] The spacing between the rollers on the roller conveyor and the spacing between the crossbeams on the material rack must be adapted to the product requirements. The roller conveyor belt has an active conveying function and the feeding speed is infinitely adjustable.

[0032] In this embodiment, the misfit and long excess hopper 2 includes a long excess hopper 21, a misfit hopper 22, and a partitioned discharge baffle 23. The long excess hopper 21 and the misfit hopper 22 are arranged side by side. The long excess hopper 21 is located between the conveyor roller 14 and the misfit hopper 22. The partitioned discharge baffle 23 has a retracted state and an open state. When the partitioned discharge baffle 23 is in the open state, the partitioned discharge baffle 23 blocks the opening above the long excess hopper 21, and the misfit material rolls into the misfit hopper 22 through the partitioned discharge baffle 23. When the partitioned discharge baffle 23 is in the retracted state, the opening above the long excess hopper 21 is open, and the long excess material falls into the long excess hopper 21.

[0033] The long excess hopper 21 and the misaligned hopper 22 are arranged on the same side of the conveyor roller conveyor 14, side by side. The long excess hopper 21 is closer to the conveyor roller conveyor 14 than the misaligned hopper 22. After the tube passes the spectral detection on the transition roller conveyor 13, it is sent to the sawing machine 3 by the conveyor roller conveyor 14. After being cut to a fixed length, the remaining long excess material is reversed and returned to the conveyor roller conveyor 14. The long excess material is then pushed into the long excess hopper 21 by the material guide plate 15. At this time, the partition discharge baffle 23 is in the retracted state. When a non-conforming tube is detected by the spectral detection on the transition roller conveyor 13, the partition discharge baffle 23 opens, blocking the long excess hopper 21. The non-conforming tube rolls from the intermediate material rack 12 over the long excess hopper 21 via the partition discharge baffle 23 and falls into the misaligned hopper 22. The partition discharge baffle 23 returns to the retracted state, and the production line continues to work.

[0034] After the raw material pipes are cut to a fixed length, the production line control system automatically determines whether the remaining material is long or short, and promptly and automatically unloads the remaining material. Only after the remaining material has been unloaded can the next pipe be lifted onto the conveyor roller and sent for fixed-length cutting.

[0035] The control system automatically determines that the excess material is returned to the conveyor roller and fed into the excess material hopper 21. At this time, the next raw material tube needs to stop on the transition roller 13 of the intermediate material rack 12, but the cleaning and spectral detection work can be carried out at the same time. After the excess material is fed into the excess material hopper 21, the material is fed from the transition roller 13 of the intermediate material rack 12 to the conveyor roller 14.

[0036] In this embodiment, the sorting mechanism 4 includes a pushing moving beam 41, a short surplus hopper 42, and a waste bin 43. The short surplus hopper 42 and the waste bin 43 are respectively arranged on the left and right sides of the pushing moving beam 41. The pushing moving beam 41 is located above the material unloading channel of the sawing machine 3 and is movable left and right to push the short surplus material into the short surplus hopper 42 or the waste material into the waste bin 43.

[0037] The sorting mechanism 4 is responsible for handling short-piece and waste materials. It is located on the unloading channel downstream of the sawing machine 3. The sorting mechanism 4 consists of a pushing moving beam 41, a short-piece hopper 42, and a waste bin 43. The moving beam is located above the unloading channel of the sawing machine 3 and can move left and right. The short-piece hopper 42 and the waste bin 43 are located on both sides of the beam. The control system automatically calculates and determines whether the remaining material is long-piece, short-piece, or waste material based on the measured length of the raw material pipe and the size and quantity of the fixed-length cut. Long-piece materials are returned to the feeding mechanism and fed into the long-piece hopper 21. Short-piece and waste materials continue to be conveyed forward from the sawing machine 3. After the sensor of the sorting mechanism 4 receives the signal, it pushes them into the short-piece hopper 42 or the waste bin 43.

[0038] This invention also provides a method for feeding and processing surplus and waste materials of small-diameter steel pipes for fixed-length cutting. The method employs the aforementioned feeding and waste material processing device for small-diameter steel pipes for fixed-length cutting. The feeding mechanism 1 includes a storage hopper 11, an intermediate material rack 12, a transition roller conveyor 13, a transmission roller conveyor 14, a material guide plate 15, a length measuring mechanism 16, and a spectral detection device 19. The intermediate material rack 12 is also equipped with a positioning baffle 18 and a clamping device 17. The misaligned material and long surplus material hopper 2 includes a long surplus material hopper 21, a misaligned material hopper 22, and a zoned discharge baffle 23. The sorting mechanism 4 includes a pushing moving beam 41, a short surplus material hopper 42, and a waste bin 43. The specific operating steps include: S1: Place a bundle of raw material pipes onto the storage hopper 11; S2: Each time, one pipe is lifted onto the transition roller 13 of the intermediate material rack 12. The transition roller 13 drives the pipe forward, the positioning baffle 18 positions it, and the clamping device 17 clamps the pipe to fix it. At this time, the length measuring mechanism 16 measures the length, and the spectral detection device 19 cleans and performs spectral detection on the pipe end. Pipes that pass the inspection proceed to S3; pipes that fail the inspection proceed to S4. S3: The qualified pipes are pushed by the feeding plate 15 to the conveyor roller 14, and the conveyor roller 14 sends the pipes to the sawing machine 3 for fixed-length cutting; the control system automatically calculates and judges whether the remaining material is long material, short material or waste material according to the measured length of the raw material pipe and the size and quantity of fixed-length cutting. The long material is returned to the feeding mechanism and fed into the long material hopper 21. The short material and waste material continue to be conveyed forward from the sawing machine 3. The moving beam 41 pushes the short material or waste material into the short material hopper 42 or the waste box 43 respectively. S4: When a defective tube is detected by spectral detection on the transition roller conveyor 13, the partition discharge baffle 23 opens, blocking the long excess hopper 21, so that the defective tube rolls from the intermediate material rack 12 over the long excess hopper 21 via the partition discharge baffle 23 and falls into the misfit hopper 22.

[0039] The specific operating steps of the small-diameter steel pipe fixed-length cutting feeding and waste material processing device are as follows: The feeding mechanism 1 is responsible for feeding, measuring, spectral analysis for material identification, conveying, unloading excess material, and unloading incorrect material detected by spectral analysis of raw material pipes. A bundle of raw material pipes is placed on the storage hopper 11. The storage hopper 11 has a size and load-bearing capacity determined according to the product output. A pipe lifting device is installed on the storage rack. After the production process starts, the lifting mechanism lifts one pipe at a time to the transition roller conveyor 13 of the intermediate material rack 12. The transition roller conveyor 13 drives the pipe forward, the positioning baffle 18 positions it, and the clamping device 17 clamps the pipe to fix it. At this time, the length measuring mechanism 16 measures the length, and the spectral analysis device 19 cleans and performs spectral analysis on the pipe ends. After the spectral detection is completed, the positioning baffle 18, clamping device 17, and spectral detection device 19 retract. Qualified tubes are then fed to the conveyor roller 14 by the feeding plate 15. The conveyor roller 14 sends the tubes to the sawing machine 3 for fixed-length cutting. The conveyor roller 14 has strong conveying and driving force, enabling the feeding and retraction of tubes. The remaining long material after cutting is returned to the conveyor roller 14 via its retraction function and then fed into the long material hopper 21. At this time, the partitioned feeding baffle 23 is in the retracted state. When a defective tube is detected by the spectral detection on the transition roller 13, the partitioned feeding baffle 23 opens, blocking the long material hopper 21. This causes the defective tube to roll from the intermediate material rack 12 over the long material hopper 21 via the partitioned feeding baffle 23 and fall into the misaligned material hopper 22. The partitioned feeding baffle 23 then returns to the retracted state, and the production line continues to operate.

[0040] The control system automatically calculates and determines whether the remaining material is long, short, or waste based on the measured length of the raw material pipe and the size and quantity of the fixed-length cut. Long material is returned to the long material hopper 21 for discharge, while short material and waste continue to be conveyed forward from the saw 3. After the sensor of the sorting mechanism 4 receives the signal, it pushes the material to the short material hopper 42 or the waste bin 43.

[0041] Obviously, the above-disclosed embodiments of the present invention are merely illustrative of the invention. The embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. It is neither necessary nor possible to exhaustively describe all embodiments herein.

Claims

1. A device for feeding and processing surplus and waste materials of small-diameter steel pipes for fixed-length cutting, characterized in that, include: The feeding mechanism (1) is used for feeding, measuring the length, performing spectral detection and conveying of raw material pipes; The saw (3) is used to cut the raw material pipes that are transported to a fixed length; The hopper for misfit material and excess material (2) is arranged on one side of the feeding mechanism (1) and is used to collect excess material and misfit material that fails the spectral detection. The sorting mechanism (4) is arranged on the feeding channel downstream of the saw (3) and is used to sort short scraps and waste materials. The control system, the feeding mechanism (1), the saw (3), the misaligned and long-overflow hopper (2), and the sorting mechanism (4) are all connected to the control system.

2. The feeding and waste / surplus material handling device for fixed-length cutting of small-diameter steel pipes according to claim 1, characterized in that: The feeding mechanism (1) includes an intermediate material rack (12), a transition roller conveyor (13), a transmission roller conveyor (14), a material feeding plate (15), a length measuring mechanism (16), and a spectral detection device (19). The transition roller conveyor (13), the transmission roller conveyor (14), and the material feeding plate (15) are all set on the intermediate material rack (12). The length measuring mechanism (16) is used to measure the length of the raw material tube located on the transition roller conveyor (13). The spectral detection device (19) is used to perform spectral detection on the raw material tube located on the transition roller conveyor (13). The material feeding plate (15) is used to move the raw material tube from the transition roller conveyor (13) to the transmission roller conveyor (14) or from the transition roller conveyor (13) to the misaligned material and long excess material hopper (2). The transmission roller conveyor (14) has an active conveying function, which can realize the forward feeding and reverse return of the raw material tube.

3. The feeding and waste / surplus material handling device for fixed-length cutting of small-diameter steel pipes according to claim 2, characterized in that: The feeding mechanism (1) also includes a driving mechanism, which is used to drive the length measuring mechanism (16) to move along the axial direction of the raw material tube. The driving mechanism includes a servo motor and a gear rack structure. The servo motor drives the gear rack structure to move the length measuring mechanism (16).

4. The feeding and waste / surplus material handling device for fixed-length cutting of small-diameter steel pipes according to claim 2, characterized in that: The spectral detection device (19) includes a grinding device and a laser spectrometer. The grinding device is used to grind the end face of the raw material tube to ensure that the laser spectrometer can excite the material composition of the raw material tube. The laser spectrometer analyzes the excited material composition and transmits the data back to the control system. It is then compared with the material composition stored in the control system to verify whether the material of the raw material tube is correct.

5. The feeding and waste / surplus material handling device for fixed-length cutting of small-diameter steel pipes according to claim 2, characterized in that: The intermediate material rack (12) is also provided with a positioning baffle (18), which is used to position the raw material tube located on the transition roller table (13).

6. The feeding and waste / surplus material handling device for fixed-length cutting of small-diameter steel pipes according to claim 2, characterized in that: The intermediate material rack (12) is also equipped with a clamping device (17), which is used to fix the raw material tube during length measurement and spectral detection.

7. The feeding and waste / surplus material handling device for fixed-length cutting of small-diameter steel pipes according to claim 2, characterized in that: The feeding mechanism (1) also includes a storage hopper (11), which is located on one side of the intermediate material rack (12) and is used to store raw material pipes.

8. The feeding and waste / surplus material handling device for fixed-length cutting of small-diameter steel pipes according to claim 1, characterized in that: The hopper for misaligned material and the hopper for excess material (2) includes a hopper for excess material (21), a hopper for misaligned material (22), and a partitioned discharge baffle (23). The hopper for excess material (21) and the hopper for misaligned material (22) are arranged side by side. The hopper for excess material (21) is located between the conveyor roller (14) and the hopper for misaligned material (22). The partitioned discharge baffle (23) has a retracted state and an open state. When the partitioned discharge baffle (23) is in the open state, the partitioned discharge baffle (23) blocks the opening above the hopper for excess material (21), and the misaligned material rolls into the hopper for misaligned material (22) after being blocked by the partitioned discharge baffle (23). When the partitioned discharge baffle (23) is in the retracted state, the opening above the hopper for excess material (21) is open, and the excess material falls into the hopper for excess material (21).

9. The feeding and waste / surplus material handling device for fixed-length cutting of small-diameter steel pipes according to claim 1, characterized in that: The sorting mechanism (4) includes a pushing moving beam (41), a short surplus hopper (42), and a waste bin (43). The short surplus hopper (42) and the waste bin (43) are respectively arranged on the left and right sides of the pushing moving beam (41). The pushing moving beam (41) is located above the material unloading channel of the saw (3) and is set to move left and right. It is used to push the short surplus material into the short surplus hopper (42) or push the waste material into the waste bin (43).

10. A method for feeding and processing surplus and waste materials of small-diameter steel pipes for fixed-length cutting, characterized in that: The device for feeding and handling surplus and waste materials of small-diameter steel pipes cut to fixed length according to any one of claims 1-9, wherein the feeding mechanism (1) includes a storage hopper (11), an intermediate material rack (12), a transition roller conveyor (13), a transmission roller conveyor (14), a material feeding plate (15), a length measuring mechanism (16), and a spectral detection device (19); the intermediate material rack (12) is also provided with a positioning baffle (18) and a clamping device (17); the misaligned material and long surplus material hopper (2) includes a long surplus material hopper (21), a misaligned material hopper (22), and a partitioned discharge baffle (23); the sorting mechanism (4) includes a pushing moving beam (41), a short surplus material hopper (42), and a waste bin (43); The specific operating steps include: S1: Place a bundle of raw material pipes on the storage hopper (11); S2: Each time, one tube is lifted to the transition roller (13) of the intermediate material rack (12). The transition roller (13) drives the tube forward. The positioning baffle (18) positions it, and the clamping device (17) clamps the tube to fix it. At this time, the length measuring mechanism (16) measures the length, and the spectral detection device (19) cleans and performs spectral detection on the tube end. The tube that passes the test proceeds to S3; the tube that fails the test proceeds to S4. S3: The qualified pipes are pushed to the conveyor roller (14) by the material feeding plate (15), and the conveyor roller (14) sends the pipes to the saw (3) for fixed-length cutting; the control system automatically calculates and judges whether the remaining material is long material, short material or waste material according to the measured length of the raw material pipe and the size and quantity of fixed-length cutting. The long material is returned to the feeding mechanism and fed into the long material hopper (21) for unloading. The short material and waste material continue to be conveyed forward from the saw (3). The moving beam (41) pushes the short material or waste material into the short material hopper (42) or waste box (43) respectively. S4: When a defective tube is detected by spectral detection on the transition roller conveyor (13), the partition discharge baffle (23) is opened to block the long excess hopper (21), so that the defective tube rolls from the intermediate material rack (12) over the long excess hopper (21) via the partition discharge baffle (23) and falls into the misfit hopper (22).

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