A thread cutting device for rolling mill guide rolls

Abstract

This invention relates to the field of thread processing technology, specifically to a thread cutting device for rolling mill guide rolls. The device includes a processing frame, a feeding unit, a transfer unit, a cutting unit, a calibration unit, an angle positioning unit, and a discharge guide block. The feeding unit is fixedly located at the top left end of the processing frame. The transfer unit is rotatably mounted on the top of the processing frame and located at the right end of the feeding unit. The cutting unit is fixedly located on the top of the processing frame and located on top of the transfer unit. The calibration unit is symmetrically arranged on top of the transfer unit, located at the front and rear ends of the transfer unit. Through the coordinated use of the feeding unit, transfer unit, cutting unit, and discharge guide block, the device achieves automatic feeding, automatic cutting, and automatic unloading during the thread cutting process of rolling mill guide rolls. It features a high degree of automation, fast processing efficiency, and improved production capacity for thread cutting of rolling mill guide rolls.

Description

Technical Field

[0001] This invention relates to the field of thread processing technology, specifically to a thread cutting device for rolling mill guide rolls. Background Technology

[0002] A rolling mill is a piece of equipment that realizes the metal rolling process. It generally refers to the equipment that completes the entire process of rolling production. Guide rolls are devices installed before and after the roll pass during the section steel rolling process to help the rolled workpiece enter and exit the roll pass accurately and stably in a predetermined direction and state. In order to ensure the stability of the guide rolls, threads need to be opened at both ends of the guide roll central shaft for locking nuts, thereby firmly connecting the guide rolls to the rolling mill stand.

[0003] Referring to a Chinese patent application with application number 202411193165.5, a galvanized steel pipe end thread processing device is disclosed. By setting a cutting component, the position of the thread cutting blade can be quickly adjusted, thereby enabling thread processing on the inner or outer side of the galvanized steel pipe as needed. However, this device requires manual intervention for material handling during processing, resulting in poor processing continuity and unsatisfactory production efficiency. Therefore, we propose a rolling mill guide roll thread cutting device to solve the above-mentioned technical problems. Summary of the Invention

[0004] This invention provides the following technical solution: a thread cutting device for rolling mill guide rolls, comprising:

[0005] Processing bench;

[0006] The feeding unit is fixedly installed at the top left end of the processing table;

[0007] The transfer unit is rotatably mounted on top of the processing table and located at the right end of the feeding unit;

[0008] The cutting unit is fixedly mounted on the top of the processing table and located on top of the transfer unit. The cutting unit is used for thread cutting of the rolling mill guide rolls.

[0009] The calibration units are symmetrically arranged at the front and rear ends of the transfer unit;

[0010] An angle positioning unit is movably mounted on top of the transfer unit for angular positioning of the transfer unit;

[0011] The feeding guide block is fixedly installed on the top right end of the processing table and is used for thread cutting of the rolling mill guide rolls.

[0012] As a preferred embodiment of the present invention, the feeding unit includes:

[0013] The feeding racks are fixedly installed on the top of the processing table in a front-to-back distribution, and the spacing between the two feeding racks is adapted to the size and specifications of the rolling mill guide rolls;

[0014] The feed chute is located on top of the two feed racks.

[0015] As a preferred embodiment of the present invention, the transfer unit includes:

[0016] Aluminum profile frames are fixedly installed on the top of the processing table, distributed at the front and back.

[0017] The No. 1 bearing housing is fixedly installed on one side of the front and rear aluminum profile frames that are close to each other;

[0018] The rotating shaft is rotatably installed inside the front and rear No. 1 bearing seats;

[0019] The rotating material trays are fixedly installed on the outer wall of the rotating shaft, with the distance between the two rotating material trays being adapted to the size and specifications of the rolling mill guide rolls. The two rotating material trays are located around the front and rear feeding racks.

[0020] The U-shaped positioning slots are distributed at equal angles to the center of the rotating material tray on its outer wall, and the specifications of the U-shaped positioning slots are adapted to the shaft diameter specifications of the central shaft of the rolling mill guide roll.

[0021] As a preferred embodiment of the present invention, the transfer unit further includes:

[0022] The No. 1 servo motor is fixedly installed inside the machining table.

[0023] The active synchronization wheel is fixedly mounted on the output shaft of servo motor number one.

[0024] The driven synchronous pulley is fixedly mounted on the outer wall of the rotating shaft;

[0025] A timing belt is fitted around the outer edges of the driving and driven timing pulleys;

[0026] An assembly plate is fixedly installed on the inner side of the top of the processing table. The No. 1 servo motor is connected to the assembly plate by bolts. A square slot is opened through the top of the processing table, and the synchronous belt passes through the inside of the square slot.

[0027] As a preferred embodiment of the present invention, the cutting unit includes:

[0028] The loading plate is fixedly installed on the upper right side of the front and rear aluminum profile frames;

[0029] Linear guide rails are fixedly installed on the front and rear of the loading plate on the side away from the aluminum profile frame, distributed vertically.

[0030] A linear slider is slidably mounted on the periphery of a linear guide rail;

[0031] Two translation plates are fixedly installed on the side of the linear slider in the vertical direction away from the loading plate, and are arranged symmetrically about the central axis of the loading plate.

[0032] The foot support plates are fixedly installed on the middle of the side of the two translation plates away from the loading plate;

[0033] The connecting plates are respectively fixedly installed on the side of the two support plates away from the translation plate;

[0034] The motor mounting plate is integrally molded and connected to the bottom of the two support plates;

[0035] The second servo motor is fixedly installed on the side of the front and rear support plates that are far apart, and the output shaft of the second servo motor moves through the inside of the motor mounting plate.

[0036] The cutting head is fixedly mounted on the output shafts of the two servo motors No. 2, one at the front and one at the rear.

[0037] As a preferred embodiment of the present invention, the cutting unit further includes:

[0038] The internal threaded tube is fixedly installed in the middle of one side of the two front and rear sliding plates that are close to each other;

[0039] The No. 2 bearing housing is fixedly installed on the side of the loading plate away from the aluminum profile frame, distributed front and rear.

[0040] The positive and negative lead screws are rotatably installed between the front and rear No. 2 bearing seats, and pass through the interior of the front and rear internal threaded tubes, and are threadedly connected to the front and rear internal threaded tubes.

[0041] The driven bevel gear is fixedly installed in the middle of the outer wall of the positive and negative lead screws;

[0042] The No. 3 servo motor is fixedly installed on the middle of one side of the loading plate near the aluminum profile frame.

[0043] The driving bevel gear is fixedly mounted on the output shaft of servo motor No. 3 and meshes with the driven bevel gear.

[0044] As a preferred embodiment of the present invention, the calibration unit includes:

[0045] Sliding holes are opened through the opposite surfaces of the two front and rear rotating material trays; and their number and position correspond one-to-one with the U-shaped positioning slots.

[0046] The top pin slides into the sliding hole;

[0047] Spring No. 1 is sleeved around the top pin, and one end of it is fixedly connected to the surface of the rotating material tray.

[0048] A ball sleeve is fixedly installed on the outer end of the top pin, and the end of the No. 1 spring away from the rotating material tray is fixedly connected to the surface of the ball sleeve.

[0049] The ball bearing is omnidirectionally mounted inside the ball sleeve;

[0050] A retaining ring is fixedly installed on the opposite surfaces of the two No. 1 bearing seats at the front and rear, and the retaining ring is concentric with the rotating shaft.

[0051] The arc-shaped guide rails are fixedly installed on the right side of the opposite surfaces of the front and rear fixed rings, and the top of the arc-shaped guide rails is provided with an inclined guide surface.

[0052] As a preferred embodiment of the present invention, the angle positioning unit includes:

[0053] The guide shaft support is fixedly installed on the middle of the side of the loading plate away from the aluminum profile frame, and is located at the bottom of the positive and negative lead screws;

[0054] The guide vertical shaft is slidably installed inside the guide shaft support, and extends through the top and bottom of the guide shaft support;

[0055] Positioning pressure plates are fixedly installed at the bottom of the front and rear guide vertical shafts;

[0056] The push block is fixedly installed on the top of the front and rear guide vertical shafts;

[0057] The bending blocks are symmetrically distributed and fixedly installed at both ends of the bottom of the push-pull block;

[0058] A push rod is fixedly installed between the translation plate and the connecting plate, and the position of the push rod corresponds to the position of the bending block.

[0059] As a preferred embodiment of the present invention, the angle positioning unit further includes:

[0060] Sheet metal brackets are symmetrically distributed and fixedly installed on the top of the positioning pressure plate;

[0061] The telescopic rod is slidably installed inside the sheet metal bracket on both sides and extends through the top and bottom of the sheet metal bracket;

[0062] Settlement blocks are fixedly installed at the bottom of the left and right telescopic rods;

[0063] Spring No. 2 is sleeved around the telescopic rod and fixedly installed between the bottom of the telescopic rod and the top of the settlement block;

[0064] Positioning blocks are fixedly installed on the bottom of the settlement block, distributed on the left and right sides;

[0065] The positioning slots are formed on the outer wall of the rotating material tray and are located on both sides of the opening of each U-shaped positioning slot. The specifications of the positioning slots are adapted to the specifications of the positioning blocks.

[0066] Spring No. 3 is fixedly installed between the top of the positioning pressure plate and the bottom of the guide shaft support.

[0067] As a preferred embodiment of the present invention, the top height of the feeding guide block is gradually decreasing to the right, the two feeding guide blocks are located inside the two rotating material trays, and the distance between the two feeding guide blocks is adapted to the size and specifications of the rolling mill guide roll.

[0068] Compared with the prior art, the beneficial effects of the present invention are:

[0069] 1. In this invention, the automatic feeding, automatic cutting and automatic unloading processes of the rolling mill guide roll thread cutting process are realized through the coordinated use of the feeding unit, the transfer unit, the cutting unit and the unloading guide block. The degree of automation is high, the processing efficiency is fast, and the production capacity of rolling mill guide roll thread cutting is improved.

[0070] 2. In this invention, the calibration unit is triggered by the transfer unit during the operation of the rolling mill guide roll to calibrate the front and rear positions of the calibration unit, ensuring that the calibration unit is in the center position. This ensures that the thread cutting length in the inner holes at both ends of the central shaft of the rolling mill guide roll is consistent. At the same time, the calibration unit can position the rolling mill guide roll inside the U-shaped positioning groove, so that the rolling mill guide roll can be prevented from loosening during the thread cutting process, thereby ensuring the stability of the processing and improving the processing accuracy.

[0071] 3. In this invention, the cutting unit pushes the angle positioning unit downward before the cutting process, so that the positioning block is inserted into the two positioning slots located at both ends of the U-shaped positioning groove, thereby achieving angle positioning of the rotating material tray, preventing the rotating material tray from rotating, and thus ensuring the cutting accuracy. Attached Figure Description

[0072] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0073] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0074] Figure 3 In this invention Figure 2 A magnified structural diagram of part A;

[0075] Figure 4 This is a schematic diagram of the planar structure of the transfer unit and the cutting unit in this invention;

[0076] Figure 5 In this invention Figure 4 A three-dimensional structural diagram;

[0077] Figure 6This is a schematic diagram of the calibration unit in this invention;

[0078] Figure 7 In this invention Figure 5 A schematic diagram of the enlarged structure of part B;

[0079] Figure 8 In this invention Figure 5 A magnified structural diagram of section C;

[0080] Figure 9 This is a schematic diagram of the angle positioning unit in this invention;

[0081] Figure 10 In this invention Figure 9 A schematic diagram of the enlarged structure of part D;

[0082] Figure 11 This is a schematic diagram of the structure of the fixing ring and the arc-shaped guide rail in this invention.

[0083] In the diagram: 100, machining table; 101, square slot; 200, feeding unit; 201, feeding rack; 202, guide chute; 300, transfer unit; 301, aluminum profile rack; 302, bearing seat No. 1; 303, rotating shaft; 304, rotating material tray; 305, U-shaped positioning slot; 306, servo motor No. 1; 307, driving synchronous pulley; 308, driven synchronous pulley; 309, synchronous belt; 3010, assembly plate; 400, cutting unit; 401, loading plate; 402, linear guide rail; 403, linear slider; 404, translation plate; 405, foot support plate; 406, connecting plate; 407, motor mounting plate; 408, servo motor No. 2; 409, cutting head; 4010, internal thread tube; 4011, shaft No. 2. Support; 4012, Lead screw; 4013, Driven bevel gear; 4014, Servo motor No. 3; 4015, Driven bevel gear; 500, Calibration unit; 501, Sliding hole; 502, Top pin; 503, Spring No. 1; 504, Ball sleeve; 505, Ball bearing; 507, Fixing ring; 508, Arc guide rail; 509, Inclined guide surface; 600, Angle positioning unit; 601, Guide shaft support; 602, Guide vertical shaft; 603, Positioning pressure plate; 604, Push block; 605, Bending block; 606, Push rod; 607, Sheet metal bracket; 608, Telescopic rod; 609, Sinking block; 6010, Spring No. 2; 6011, Positioning insert; 6012, Positioning slot; 6013, Spring No. 3; 700, Unloading guide block. Detailed Implementation

[0084] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0085] Please see Figures 1 to 11 The technical solution provided by the present invention specifically includes the following embodiments:

[0086] A mill guide roll thread cutting device includes a processing frame 100, a feeding unit 200, a transfer unit 300, a cutting unit 400, a calibration unit 500, an angle positioning unit 600, and a discharge guide block 700. The feeding unit 200 is fixedly installed at the top left end of the processing frame 100. The transfer unit 300 is rotatably installed at the top of the processing frame 100 and located at the right end of the feeding unit 200. The cutting unit 400 is fixedly installed at the top of the processing frame 100 and located at the top of the transfer unit 300. The cutting unit 400 is used for mill guide roll thread cutting. The calibration unit 500 is symmetrically arranged at the front and rear ends of the transfer unit 300. The angle positioning unit 600 is movably installed at the top of the transfer unit 300 for angle positioning of the transfer unit 300. The discharge guide block 700 is fixedly installed at the top right end of the processing frame 100 for mill guide roll thread cutting and discharge.

[0087] For further details, please refer to [link / reference]. Figure 3 , Figure 5 , Figure 6 As shown:

[0088] The feeding unit 200 includes a feeding frame 201 and a guide trough 202. The feeding frame 201 is fixedly installed on the top of the processing table 100 in a front-to-back distribution. The distance between the two feeding frames 201 is adapted to the size and specifications of the rolling mill guide roll. The guide trough 202 is opened on the top of the two feeding frames 201.

[0089] The transfer unit 300 includes an aluminum profile frame 301, a first bearing seat 302, a rotating shaft 303, a rotating material tray 304, a U-shaped positioning slot 305, a first servo motor 306, a driving synchronous pulley 307, a driven synchronous pulley 308, a synchronous belt 309, and an assembly plate 3010. The aluminum profile frame 301 is fixedly installed on the top of the processing table 100, distributed front to back. The first bearing seat 302 is fixedly installed on the side of the two aluminum profile frames 301 that are close to each other. The rotating shaft 303 is rotatably installed inside the two first bearing seats 302. The rotating material tray 304 is fixedly installed on the outer wall of the rotating shaft 303, distributed front to back. The distance between the two rotating material trays 304 is adapted to the size and specifications of the rolling mill guide rolls, and the two rotating material trays 304 are located on the front and rear feeding racks 20. 1. On the outer perimeter, U-shaped positioning slots 305 are distributed at equal angles to the center of the rotating material tray 304 on its outer wall. The specifications of the U-shaped positioning slots 305 are compatible with the shaft diameter of the central shaft of the rolling mill guide roll. The first servo motor 306 is fixedly installed inside the processing table 100. The active synchronous wheel 307 is fixedly installed on the output shaft of the first servo motor 306. The driven synchronous wheel 308 is fixedly installed on the outer wall of the rotating shaft 303. The synchronous belt 309 is sleeved around the active synchronous wheel 307 and the driven synchronous wheel 308. The assembly plate 3010 is fixedly installed on the inner side of the top of the processing table 100. The first servo motor 306 is connected to the assembly plate 3010 by bolts. A square slot 101 is opened through the top of the processing table 100. The synchronous belt 309 passes through the inside of the square slot 101.

[0090] The top height of the feeding guide block 700 gradually decreases to the right. The front and rear feeding guide blocks 700 are located inside the front and rear rotating material trays 304, and the distance between the front and rear feeding guide blocks 700 is adapted to the size and specifications of the rolling mill guide roll.

[0091] Specifically, the mill guide rollers are placed sequentially inside the guide trough 202, such that the outer wall of the central axis of the mill guide roller abuts against the inner wall of the guide trough 202. It is important to note that the right end of the guide trough 202 is lower than the left end. Therefore, the mill guide rollers inside the guide trough 202 always possess the potential energy to roll to the right. Next, the output shaft of the first servo motor 306 drives the active synchronous wheel 307 to rotate clockwise, which in turn drives the driven synchronous wheel 308 to rotate clockwise via the synchronous belt 309. The clockwise rotation of the driven synchronous wheel 308 drives the rotating shaft 303, along with the two rotating material trays 304, to rotate together. As one set of U-shaped positioning slots 305 of the two rotating material trays 304 rotates towards the two guide troughs 202, the rightmost mill guide roller inside the guide trough 202... The central axis of the roller rolls into the two U-shaped positioning slots 305 and rotates upwards to the top position with the rotating material tray 304. Then, the cutting unit 400 performs thread cutting on the inner holes at both ends of the central axis. After the thread cutting is completed, the output shaft of the first servo motor 306 continues to drive the active synchronous wheel 307 to rotate clockwise. Under the connection of the synchronous belt 309, it drives the driven synchronous wheel 308 and the rotating shaft 303 to rotate clockwise together. The rotation of the rotating shaft 303 drives the two rotating shafts 303 to rotate together, conveying the cut mill guide roller to the top of the two unloading guide blocks 700 to the right. It continues to slide to the right end of the device along the top of the unloading guide blocks 700, completing the automatic unloading of the mill guide roller thread cutting. The whole process has a high level of automation, requires no manual operation, and has high processing efficiency.

[0092] For further details, please refer to [link / reference]. Figure 5 , Figure 7 , Figure 9 , Figure 10 As shown:

[0093] The cutting unit 400 includes a loading plate 401, linear guide rails 402, linear sliders 403, translation plate 404, foot support plate 405, connecting plate 406, motor mounting plate 407, a second servo motor 408, a cutting head 409, an internal threaded tube 4010, a second bearing housing 4011, a forward and reverse lead screw 4012, a driven bevel gear 4013, a third servo motor 4014, and a driving bevel gear 4015. The loading plate 401 is fixedly installed on the upper right side of the front and rear aluminum profile frames 301, and the linear guide rails 402 are vertically distributed and fixedly installed on the mounting plate 407. The front and rear sides of the carrier plate 401 away from the aluminum profile frame 301 are respectively. The linear slider 403 is slidably mounted on the periphery of the linear guide rail 402. The translation plate 404 is fixedly mounted on the side of the linear slider 403 away from the loading plate 401 in the vertical direction. There are two translation plates 404, which are symmetrically arranged about the central axis of the loading plate 401. The foot support plates 405 are respectively fixedly mounted on the middle of the side of the two translation plates 404 away from the loading plate 401. The connecting plate 406 is respectively fixedly mounted on the side of the two foot support plates 405 away from the translation plates 404. On the front, motor mounting plates 407 are integrally formed and connected to the bottom of the two support plates 405. The second servo motor 408 is fixedly installed on the opposite side of the front and rear support plates 405, with the output shaft of the second servo motor 408 moving through the inside of the motor mounting plate 407. The cutting head 409 is fixedly installed on the output shaft of the front and rear second servo motors 408. The internal thread tube 4010 is fixedly installed in the middle of the opposite side of the front and rear translation plates 404. The second bearing seat 4011 is fixedly installed on the loading plate 401 away from the aluminum profile. On one side of the frame 301, the positive and negative lead screws 4012 are rotatably installed between the front and rear No. 2 bearing seats 4011, and pass through the interior of the front and rear internal threaded tubes 4010, and are threadedly connected to the front and rear internal threaded tubes 4010. The driven bevel gear 4013 is fixedly installed in the middle of the outer wall of the positive and negative lead screws 4012. The No. 3 servo motor 4014 is fixedly installed in the middle of the side of the loading plate 401 near the aluminum profile frame 301. The driving bevel gear 4015 is fixedly installed on the output shaft of the No. 3 servo motor 4014 and meshes with the driven bevel gear 4013.

[0094] Specifically, the output shaft of the third servo motor 4014 drives the active bevel gear 4015 to rotate, which in turn drives the driven bevel gear 4013 to rotate. The rotation of the driven bevel gear 4013 drives the lead screw 4012 to rotate along the inside of the two second bearing seats 4011, pushing the two internal screw tubes 4010 towards the center. The two internal screw tubes 4010 further drive the two translation plates 404 to move towards the center. The movement of the translation plates 404 drives the foot support plate 405 to move together. Through the foot support plate 405 and the motor mounting plate 405, The connection of 07 drives the second servo motor 408 and the cutting head 409 to move together. At the same time, the two second servo motors 408 drive the two cutting heads 409 to rotate, cutting threads in the inner holes at both ends of the center line of the rolling mill guide roll. After the thread cutting is completed, the output shaft of the third servo motor 4014 rotates in the opposite direction, causing the two translation plates 404 to move in opposite directions, which further causes the second servo motors 408 to move together, withdrawing the cutting head 409 from the threaded holes at both ends of the center shaft of the rolling mill guide roll.

[0095] For further details, please refer to [link / reference]. Figure 6 , Figure 11 As shown:

[0096] The calibration unit 500 includes a sliding hole 501, a top pin 502, a first spring 503, a ball sleeve 504, a ball bearing 505, a fixing ring 507, an arc-shaped guide rail 508, and an inclined guide surface 509. The sliding hole 501 is formed through the two rotating material trays 304 facing each other; and its number and position correspond one-to-one with the U-shaped positioning slots 305. The top pin 502 is slidably inserted into the sliding hole 501. The first spring 503 is sleeved around the top pin 502, and one end of it is fixedly connected to the surface of the rotating material tray 304. Sleeve 504 is fixedly installed on the outer end of top pin 502. The end of spring 503 away from rotating material plate 304 is fixedly connected to the surface of sleeve 504. Ball 505 is omnidirectionally installed inside sleeve 504. Fixing ring 507 is fixedly installed on the opposite surfaces of front and rear bearing seats 302 respectively. Fixing ring 507 is concentric with rotating shaft 303. Arc-shaped guide rail 508 is fixedly installed on the right side of the opposite surfaces of front and rear fixing ring 507 respectively. The top of arc-shaped guide rail 508 is provided with inclined guide surface 509.

[0097] Specifically, as the two rotating material trays 304 rotate to a position facing the two guide grooves 202, one of the U-shaped positioning slots 305 rolls into the two U-shaped positioning slots 305. The rotating material tray 304 then rotates upwards until it is positioned between the two cutting heads 409. At this point, the first servo motor 306 stops. During this process, the rotation of the two rotating material trays 304 also drives the top pin 502, the first spring 503, the ball sleeve 504, and the ball bearing 505 to rotate together via the sliding hole 501. This causes the ball bearing 505 to rotate along the inner wall of the fixed ring 507. When the ball bearing 505 reaches the position of the inclined guide surface 509, it rotates along the inclined guide surface... The guiding action of 509 ultimately causes the ball 505 to roll onto the inner side of the arc-shaped guide rail 508, thereby pressing the top pin 502 towards the mill guide roll. The first spring 503 is compressed. As the two top pins 502 move towards the center, the mill guide roll located inside the U-shaped positioning slot 305 is positioned towards the center, ensuring that the mill guide roll is centered between the two front and rear rotating material trays 304. This ensures that the thread cutting length in the inner holes at both ends of the central shaft of the mill guide roll is consistent. At the same time, the two top pins 502 press the mill guide roll back and forth, positioning the mill guide roll inside the U-shaped positioning slot 305. This prevents the mill guide roll from loosening during thread cutting, thus ensuring processing stability and improving processing accuracy.

[0098] For further details, please refer to [link / reference]. Figures 5-9 As shown:

[0099] The angle positioning unit 600 includes a guide shaft support 601, a guide vertical shaft 602, a positioning pressure plate 603, a push block 604, a bending block 605, a push rod 606, a sheet metal bracket 607, a telescopic rod 608, a settling block 609, a second spring 6010, a positioning insert block 6011, a positioning slot 6012, and a third spring 6013. The guide shaft support 601 is fixedly installed on the middle of the side of the loading plate 401 away from the aluminum profile frame 301, and is located at the bottom of the positive and negative lead screws 4012. The guide vertical shaft 602 is slidably installed inside the guide shaft support 601, and passes through the top and bottom of the guide shaft support 601. The positioning pressure plate 603 is fixedly installed at the bottom of the two guide vertical shafts 602. The push block 604 is fixedly installed at the top of the two guide vertical shafts 602. The bending block 605 is symmetrically distributed and fixedly installed at both ends of the bottom of the push block 604. The push rod 606 is fixedly installed on the translation plate 401. Between the connecting plate 406 and the connecting plate 406, the position of the push rod 606 corresponds to the position of the bending block 605. The sheet metal bracket 607 is symmetrically distributed and fixedly installed on the top of the positioning pressure plate 603. The telescopic rod 608 is distributed and slidably installed inside the sheet metal bracket 607, and passes through the top and bottom of the sheet metal bracket 607. The settling block 609 is fixedly installed at the bottom of the left and right telescopic rods 608. The second spring 6010 is sleeved on the outside of the telescopic rod 608 and fixedly installed between the bottom of the telescopic rod 608 and the top of the settling block 609. The positioning insert 6011 is distributed and fixedly installed at the bottom of the settling block 609. The positioning slot 6012 is opened on the outer wall of the rotating material tray 304 and is located on both sides of the opening of each U-shaped positioning slot 305. The specifications of the positioning slot 6012 are compatible with the specifications of the positioning insert 6011. The third spring 6013 is fixedly installed between the top of the positioning pressure plate 603 and the bottom of the guide shaft support 601.

[0100] Specifically, the output shaft of the No. 3 servo motor 4014 drives the active bevel gear 4015 to rotate, which in turn drives the driven bevel gear 4013 to rotate. The rotation of the driven bevel gear 4013 drives the positive and negative lead screws 4012 to rotate along the inside of the two No. 2 bearing seats 4011, pushing the two internal screw tubes 4010 towards the center. The two internal screw tubes 4010 further drive the two translation plates 404 to move towards the center. The movement of the translation plates 404 causes the foot support plate 405, the connecting plate 406, and the push rod 606 to move together, thereby generating a downward wedge force on the bending block 605, further pushing the push block 606. 04. Pushing downwards, the push block 604 moves downwards, driving the positioning plate 603 downwards via two guide vertical shafts 602. The downward movement of the positioning plate 603 further drives the two front and rear telescopic rods 608 to move downwards together. Under the connection of the second spring 6010, the telescopic rods 608, the sinking block 609, and the two left and right positioning blocks 6011 move downwards together, so that the two positioning blocks 6011 are inserted into the two positioning slots 6012 located at both ends of the U-shaped positioning groove 305, thereby achieving angular positioning of the rotating material tray 304, preventing the rotating material tray 304 from rotating, and thus ensuring the cutting accuracy.

[0101] In this design, a mill guide roll thread cutting device is used. During operation, the mill guide rolls are sequentially placed inside the guide trough 202, such that the outer wall of the central axis of the mill guide roll abuts against the inner wall of the guide trough 202. It is important to note that the right end of the guide trough 202 is lower than the left end. Therefore, the mill guide rolls located inside the guide trough 202 always possess the potential energy to roll to the right. Then, the output shaft of the first servo motor 306 drives the active synchronous pulley 307 to rotate clockwise, which in turn drives the driven synchronous pulley 308 to rotate clockwise via the synchronous belt 309. The driven synchronous wheel 308 rotates clockwise, driving the rotating shaft 303 and the two rotating material trays 304 to rotate together. As one set of U-shaped positioning slots 305 of the two rotating material trays 304 rotates towards the two guide grooves 202, the central shaft of the rightmost rolling mill guide roller located inside the guide groove 202 rolls into the two U-shaped positioning slots 305 and rotates upward with the rotating material tray 304 until it is rotated to the position between the two cutting heads 409. At this point, the first servo motor... When machine 306 stops operating, the rotation of the two rotating material discs 304, via the sliding hole 501, also drives the top pin 502, the first spring 503, the ball sleeve 504, and the ball 505 to rotate together. This causes the ball 505 to rotate along the inner wall of the fixed ring 507. When the ball 505 rotates to the position of the inclined guide surface 509, the ball 505 is guided by the inclined guide surface 509 and eventually rolls onto the inner side of the arc-shaped guide rail 508. This causes the top pin 502 to be pressed towards the mill guide roll, and the first spring 503 is compressed. Due to the rotation of the two top pins 502, the ball 502 rotates towards the mill guide roll. 02. The roller is pressed and moved towards the center, thereby positioning the mill guide roller inside the U-shaped positioning slot 305 towards the center. This ensures that the mill guide roller is centered between the two front and rear rotating material trays 304, thus ensuring that the thread cutting length in the inner holes at both ends of the central shaft of the mill guide roller is consistent. At the same time, the two front and rear top pins 502 press the mill guide roller back and forth, which can position the mill guide roller inside the U-shaped positioning slot 305. This prevents the mill guide roller from loosening during the thread cutting process, thereby ensuring the stability of the processing and improving the processing accuracy.

[0102] Next, the output shaft of the third servo motor 4014 drives the active bevel gear 4015 to rotate, which in turn drives the driven bevel gear 4013 to rotate. The rotation of the driven bevel gear 4013 drives the positive and negative lead screws 4012 to rotate along the inside of the two second bearing seats 4011, pushing the two internal screw tubes 4010 towards the middle. The two internal screw tubes 4010 further drive the two translation plates 404 to move towards the middle. The movement of the translation plates 404 drives the foot support plate 405, the connecting plate 406, and the push rod 606 to move together, thereby generating a downward wedge force on the bending block 605, further pushing the push block 604 downward. The downward movement of the push block 604 drives the positioning pressure plate 603 downward through the two guide vertical shafts 602. The downward movement of the positioning pressure plate 603 further drives the two front and rear bearing seats 4011. The telescopic rods 608 move downward together. Under the connection of the second spring 6010, the telescopic rods 608, the sinking block 609, and the two left and right positioning blocks 6011 move downward together, so that the two positioning blocks 6011 are inserted into the two positioning slots 6012 located at both ends of the U-shaped positioning groove 305, thereby achieving angular positioning of the rotating material plate 304 and preventing the rotating material plate 304 from rotating, thus ensuring the accuracy of subsequent cutting. Then, the two rotating material plates 304 continue to move towards the middle. Through the connection of the foot support plate 405 and the motor mounting plate 407, the second servo motor 408 and the cutting head 409 move together. At the same time, the two second servo motors 408 drive the two cutting heads 409 to rotate, cutting thread teeth in the inner holes at both ends of the center line of the rolling mill guide roll.

[0103] Subsequently, the output shaft of servo motor 3 4014 rotates in the opposite direction, causing the two translation plates 404 to move in opposite directions. This further causes the push rod 606 and servo motor 408 to move together, pulling the cutting head 409 out of the threaded holes at both ends of the central shaft of the mill guide roll. The two push rods 606 move in opposite directions, gradually releasing the wedge force on the two bending blocks 605, causing the spring 6013 to release its rebound force, pulling the positioning plate 603 upward, and driving the two guide vertical shafts 602, push blocks 604, bending blocks 605, sheet metal brackets 607, telescopic rods 608, settling blocks 609, and positioning inserts 6011 to move. This causes the positioning inserts 6011 to exit from the positioning slot 6012, releasing the angular positioning of the rotating material tray 304. Then, the output shaft of servo motor 306 continues to drive the active synchronous pulley 307 to rotate clockwise, and the synchronous belt 309 connects to it. Under the action of the driven synchronous wheel 308, together with the rotating shaft 303, they rotate clockwise. The rotation of the rotating shaft 303 drives the two front and rear rotating shafts 303 to rotate together, conveying the cut mill guide roll to the right to the top of the two unloading guide blocks 700. When the mill guide roll approaches the top of the two unloading guide blocks 700, the two top pins 502 holding the mill guide roll just rotate with the rotating material plate 304 to the bottom end of the arc-shaped guide rail 508. Therefore, the rebound force of the first spring 503 around the top pin 502 is released, pushing the top pin 502 to slide along the inside of the sliding hole 501 in a direction away from the mill guide roll, releasing the front and rear clamping of the mill guide roll. Finally, the mill guide roll rolls from the inside of the two front and rear U-shaped positioning slots 305 to the top of the two front and rear unloading guide blocks 700, and continues to slide to the right along the top of the unloading guide blocks 700 to the right end of the device, completing the automatic unloading of the mill guide roll thread cutting.

[0104] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A thread cutting device for rolling mill guide rolls, characterized in that: include: Processing stand (100); A feeding unit (200) is fixedly installed at the top left end of the processing table (100), and the feeding unit (200) includes: The feed racks (201) are fixedly installed on the top of the processing table (100) in a front-to-back distribution, and the spacing between the two feed racks (201) is adapted to the size and specifications of the rolling mill guide rolls; The guide chute (202) is located on top of the two feed racks (201); A transfer unit (300) is rotatably mounted on top of the processing table (100) and located at the right end of the feeding unit (200). The transfer unit (300) includes: Aluminum profile frame (301) is fixedly installed on the top of the processing table (100) in a front and rear distribution; The No. 1 bearing housing (302) is fixedly installed on the side surface of the two front and rear aluminum profile frames (301) that are close to each other; The rotating shaft (303) is rotatably installed inside the front and rear No. 1 bearing seats (302); The rotating material trays (304) are fixedly installed on the outer wall of the rotating shaft (303) in a front-to-back distribution. The distance between the two rotating material trays (304) is adapted to the size and specifications of the rolling mill guide rolls, and the two rotating material trays (304) are located around the front and rear feeding racks (201). U-shaped positioning slots (305) are distributed at equal angles to the center of the rotating material tray (304) on its outer wall. The specifications of the U-shaped positioning slots (305) are compatible with the shaft diameter specifications of the central shaft of the rolling mill guide roll. The cutting unit (400) is fixedly installed on the top of the processing table (100) and located on the top of the transfer unit (300). The cutting unit (400) is used for thread cutting of the rolling mill guide rolls. A calibration unit (500) is symmetrically arranged at the front and rear ends of the transfer unit (300), and the calibration unit (500) includes: Sliding holes (501) are formed through the opposite surfaces of the two front and rear rotating material trays (304); and their number and position correspond one-to-one with the U-shaped positioning slots (305); The top pin (502) is slidably inserted into the sliding hole (501); Spring No. 1 (503) is sleeved around the top pin (502), and one end of it is fixedly connected to the surface of the rotating material tray (304); A ball sleeve (504) is fixedly installed on the outer end of the top pin (502), and the end of the first spring (503) away from the rotating material plate (304) is fixedly connected to the surface of the ball sleeve (504); The ball bearing (505) is omnidirectionally mounted inside the ball sleeve (504); The fixing ring (507) is fixedly installed on the opposite surfaces of the front and rear No. 1 bearing seats (302), and the fixing ring (507) is concentric with the rotating shaft (303); The arc-shaped guide rail (508) is fixedly installed on the right side of the opposite face of the two front and rear fixed rings (507), and the top of the arc-shaped guide rail (508) is provided with an inclined guide surface (509). An angle positioning unit (600) is movably mounted on top of the transfer unit (300) for angle positioning of the transfer unit (300); The feeding guide block (700) is fixedly installed on the top right end of the processing table (100) for feeding the thread of the rolling mill guide roll.

2. The mill guide roll thread cutting equipment according to claim 1, characterized in that: The transfer unit (300) further includes: Servo motor No. 1 (306) is fixedly installed inside the machining table (100); The active synchronizing pulley (307) is fixedly mounted on the output shaft of the first servo motor (306); The driven synchronous pulley (308) is fixedly installed on the outer wall of the rotating shaft (303); A synchronous belt (309) is fitted around the driving synchronous pulley (307) and the driven synchronous pulley (308); The assembly plate (3010) is fixedly installed on the inner side of the top of the processing table (100). The No. 1 servo motor (306) is connected to the assembly plate (3010) by bolts. A square slot (101) is opened through the top of the processing table (100). The synchronous belt (309) passes through the inside of the square slot (101).

3. The mill guide roll thread cutting equipment according to claim 2, characterized in that: The cutting unit (400) includes: The loading plate (401) is fixedly installed on the upper right side of the two front and rear aluminum profile frames (301); Linear guide rails (402) are fixedly installed on the front and rear sides of the loading plate (401) away from the aluminum profile frame (301) in a vertically distributed manner; A linear slider (403) is slidably mounted on the periphery of a linear guide rail (402); A translation plate (404) is fixedly installed on the side of the linear slider (403) in the vertical direction away from the loading plate (401). There are two translation plates (404), and they are arranged symmetrically about the central axis of the loading plate (401). The foot support plate (405) is fixedly installed on the middle of the side of the two translation plates (404) away from the loading plate (401); The connecting plate (406) is fixedly installed on the side of the two foot support plates (405) away from the translation plate (404); The motor mounting plate (407) is integrally formed and connected to the bottom of the two support plates (405); The second servo motor (408) is fixedly installed on the opposite side of the front and rear support plates (405), and the output shaft of the second servo motor (408) moves through the inside of the motor mounting plate (407); The cutting head (409) is fixedly mounted on the output shafts of the two servo motors (408) at the front and rear.

4. The mill guide roll thread cutting equipment according to claim 3, characterized in that: The cutting unit (400) further includes: The internal thread tube (4010) is fixedly installed on the middle of one side of the two front and rear translation plates (404) that are close to each other; The No. 2 bearing housing (4011) is fixedly installed on the side of the loading plate (401) away from the aluminum profile frame (301) in a front-to-back distribution; The positive and negative lead screw (4012) is rotatably installed between the front and rear No. 2 bearing seats (4011), and passes through the interior of the front and rear internal threaded tubes (4010), and is threadedly connected to the front and rear internal threaded tubes (4010); Driven bevel gear (4013) is fixedly installed in the middle of the outer wall of the positive and negative lead screw (4012); Servo motor No. 3 (4014) is fixedly installed on the middle of one side of the loading plate (401) near the aluminum profile frame (301); The driving bevel gear (4015) is fixedly mounted on the output shaft of the third servo motor (4014) and meshes with the driven bevel gear (4013).

5. The mill guide roll thread cutting equipment according to claim 4, characterized in that: The angle positioning unit (600) includes: The guide shaft support (601) is fixedly installed on the middle of the side of the loading plate (401) away from the aluminum profile frame (301) and is located at the bottom of the positive and negative lead screws (4012); The guide vertical shaft (602) is slidably installed inside the guide shaft support (601) in a front-to-back distribution, and passes through the top and bottom of the guide shaft support (601); The positioning plate (603) is fixedly installed at the bottom of the front and rear guide vertical shafts (602); The push block (604) is fixedly installed on the top of the front and rear guide vertical shafts (602); The bending blocks (605) are symmetrically distributed and fixedly installed at both ends of the bottom of the push-pull block (604); A push rod (606) is fixedly installed between the translation plate (404) and the connecting plate (406), and the position of the push rod (606) corresponds to the position of the bending block (605).

6. The mill guide roll thread cutting equipment according to claim 5, characterized in that: The angle positioning unit (600) further includes: Sheet metal brackets (607) are symmetrically distributed and fixedly installed on the top of the positioning pressure plate (603); The telescopic rod (608) is slidably installed inside the sheet metal bracket (607) on the left and right sides, and passes through the top and bottom of the sheet metal bracket (607); Settlement blocks (609) are fixedly installed at the bottom of the left and right telescopic rods (608); Spring No. 2 (6010) is sleeved around the telescopic rod (608) and fixedly installed between the bottom of the telescopic rod (608) and the top of the sinking block (609); Positioning blocks (6011) are fixedly installed on the bottom of the settling blocks (609) on the left and right sides; The positioning slot (6012) is opened on the outer wall of the rotating material tray (304) and located on both sides of the opening of each U-shaped positioning slot (305). The specifications of the positioning slot (6012) are compatible with the specifications of the positioning plug (6011). Spring No. 3 (6013) is fixedly installed between the top of the positioning pressure plate (603) and the bottom of the guide shaft support (601).

7. The mill guide roll thread cutting equipment according to claim 6, characterized in that: The top height of the feeding guide block (700) gradually decreases to the right. The two feeding guide blocks (700) are located inside the two rotating material trays (304), and the distance between the two feeding guide blocks (700) is adapted to the size and specifications of the rolling mill guide roll.

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