Fully automatic continuous cold tube rolling mill and method

Abstract

The application discloses a kind of full-automatic continuous cold-rolling pipe machine and method including cold-rolling machine body, bed, feeding module, core rod chuck module, feeding module and automatic feeding module, one end of bed is connected with cold-rolling machine body, cold-rolling machine body is used to cold-rolling for steel pipe, feeding module is used to send steel pipe into cold-rolling machine body in the way of intermittent feeding, core rod chuck module is equipped with core rod, core rod penetrates core rod chuck module, feeding module and cold-rolling machine body, feeding module is used to send steel pipe into core rod chuck module, automatic feeding module is used to push steel pipe into feeding module automatically, by the design of automatic feeding module and feeding module, utilize automatic feeding module and load rough steel pipe into feeding module, then push rough steel pipe into cold-rolling machine body continuously by feeding module, ensure the continuous processing of cold-rolling machine body, reduce the downtime of cold-rolling machine body, increase production efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of cold rolling mills, and particularly relates to a fully automatic continuous cold rolling mill and method. Background Technology

[0002] With the rapid development of the national economy and the continuous expansion of new technology fields, the application range of cold-rolled tubes is becoming wider and wider, and the requirements for their varieties and quality are becoming higher and higher. In particular, the development of industries such as aviation, rockets, automobiles, and shipbuilding has led to an increasing demand for various precision, thin-walled, and high-strength cold-rolled tubes. Currently, the production of these tubes is mainly carried out by cold rolling mills.

[0003] Cold rolling mill is a mechanical process equipment that uses annular holes to cold roll rough tubes. This machine has good billet opening performance and can also roll non-ferrous metal seamless tubes of ordinary precision. The biggest feature of cold rolling mill is its high material utilization rate, and its precision and surface roughness are better than those of cold drawing machine.

[0004] In existing cold rolling mills, a blank steel pipe is typically pushed into the mill body through a feeding module for cold rolling. After one blank steel pipe is processed, a second blank steel pipe needs to be placed into the feeding module, and then the feeding process is repeated to complete the feeding work. Each time, the processing of the next steel pipe can only begin after the processing of one steel pipe is completed. This process cannot achieve continuous processing, consumes a lot of time, has low production efficiency, is not conducive to assembly line production, cannot expand the scale of production, and results in economic losses. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned technical problems existing in the prior art and to provide a fully automatic continuous cold rolling mill. Through the design of an automatic feeding module and a feeding module, the automatic feeding module feeds the blank steel pipe into the feeding module, and then the feeding module continuously pushes the blank steel pipe into the cold rolling mill body, ensuring continuous processing of the cold rolling mill body, reducing the downtime of the cold rolling mill body, and increasing production efficiency.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A fully automatic continuous cold rolling mill for tubes, including

[0008] The cold rolling mill body is used for cold rolling steel pipes;

[0009] The bed is located on one side of the cold rolling mill body, and one end of the bed is connected to the cold rolling mill body.

[0010] Its features also include:

[0011] The feeding module is installed on the bed and is used to feed the steel pipe into the cold rolling mill body in an intermittent feeding manner.

[0012] The core rod chuck module is located on one side of the feeding module. The core rod chuck module is equipped with a core rod that passes through the core rod chuck module, the feeding module, and the cold rolling mill body.

[0013] The feeding module is located on one side of the core rod chuck module and is used to feed the steel pipe into the core rod chuck module.

[0014] An automatic feeding module is located on both sides of the feeding module. The automatic feeding module is used to automatically push the steel pipe into the feeding module.

[0015] By designing automatic feeding and feeding modules, the automatic feeding module feeds the blank steel pipe into the feeding module, and then the feeding module continuously pushes the blank steel pipe into the cold rolling mill body, ensuring continuous processing of the cold rolling mill body, reducing the downtime of the cold rolling mill body, and increasing production efficiency.

[0016] Furthermore, the automatic feeding module includes a support base, a lifting mechanism, and a guide sliding mechanism. The support base is stepped and is used to support the steel pipe. The lifting mechanism is installed on the support base and is used to lift the steel pipe sequentially to the top of the support base. The guide sliding mechanism is installed between the support base and the feeding module and is used to guide the steel pipe into the feeding module.

[0017] Furthermore, the support base is provided with a first step, a second step and a third step, the height of the first step, the second step and the third step increases sequentially, the first step and the second step are inclined, the top of the support base near the guide sliding mechanism is provided with an inclined surface, and the second step is provided with a lifting surface;

[0018] The lifting mechanism includes a lifting frame and a lifting cylinder. The lifting frame is installed between two support bases, and the lifting cylinder is connected to the lifting frame. The lifting cylinder is used to control the lifting and lowering of the lifting frame. The lifting frame is provided with a lifting plate, which includes a first lifting plate and a second lifting plate. The tops of both the first and second lifting plates are inclined. The first lifting plate corresponds to the first step, and the width of the second lifting plate is the same as the sum of the widths of the inclined surface, the third step, and the lifting surface.

[0019] The guide sliding mechanism includes a mounting frame, an inclined plate, a first guide plate, a second guide plate, and a guide cylinder. The inclined plate is mounted on the top of the mounting frame, the first guide plate and the guide cylinder are mounted on the inclined plate, and the guide cylinder is connected to the second guide plate. The guide cylinder is used to control the extension and retraction of the second guide plate.

[0020] Furthermore, the feeding module includes a feeding platform, a switching mechanism, and a feeding mechanism. The feeding platform is mounted on the support base via the switching mechanism. The feeding platform has a first slide and a second slide, which are used to place steel pipes. The switching mechanism is used to control the movement of the feeding platform so that the first slide or the second slide is aligned with the core rod. There are two feeding mechanisms, which correspond to the first slide and the second slide. The feeding mechanisms are used to feed the steel pipes in the first slide and the second slide into the core rod chuck module.

[0021] Furthermore, the switching mechanism includes a servo motor, a first driving wheel, a first driven wheel, a switching gear, and a switching shaft. The first driving wheel is mounted on the servo motor, and the first driven wheel is mounted on the support base. The first driving wheel meshes with the first driven wheel. The switching gear is coaxially arranged with the first driven wheel, and two switching gears and two first driven wheels are provided respectively. The switching shaft is located between the two switching gears. The switching gear has a first tooth, and the switching shaft has a second tooth. The first tooth meshes with the second tooth. Both ends of the switching shaft are fixed to the bottom of the feed table by a first fixed seat. A sliding seat is provided on the support base, and the switching shaft is slidably mounted on the sliding seat. The sliding seat is used to increase the stability of the movement of the switching shaft.

[0022] Furthermore, the feeding mechanism includes a second servo motor, a first threaded rod, a guide rod, and a feeding plate. The second servo motor is connected to the first threaded rod. Both the first threaded rod and the guide rod are fixed on the feeding table by a second fixed seat. The feeding plate is provided with a threaded hole and a sliding hole. The feeding plate is installed on the first threaded rod through the threaded hole and on the guide rod through the sliding hole. The feeding plate is provided with a protrusion for pushing the steel pipe.

[0023] Furthermore, the core rod chuck module includes a motor drive mechanism, a hydraulic mechanism, and a jaw mechanism. The motor drive mechanism drives the jaw mechanism to rotate, and the hydraulic mechanism controls the jaw mechanism to clamp or release the core rod. The motor drive mechanism includes a servo motor, a second driving wheel, a second driven wheel, a bevel gear, and a reduction gear. The servo motor is connected to the second driving wheel, which meshes with the second driven wheel. The bevel gear is coaxially arranged with the second driven wheel, and the reduction gear is mounted on the jaw mechanism, meshing with the bevel gear. The jaw mechanism includes a feed pipe, in which the core rod is installed. The reduction gear is mounted on the feed pipe, and a through hole is provided at the end of the feed pipe. A jaw is installed in the through hole, and an inclined portion is provided at the end of the jaw away from the through hole. The jaw clamps or releases the core rod.

[0024] The hydraulic mechanism includes a fixed frame, a hydraulic cylinder, a push frame, and a compression ring. One end of the hydraulic cylinder is hinged to one end of the fixed frame, and the other end of the hydraulic cylinder is hinged to the push frame. The push frame is hinged to the other end of the fixed frame. The compression ring is sleeved on the feed pipe. The push frame has a pusher, and the compression ring has a pusher groove. The pusher is located in the pusher groove. The compression ring has a corresponding clasp groove, and the clasp is engaged in the clasp groove.

[0025] Furthermore, the feeding module includes a power mechanism, a lead screw mechanism, and a feeding trolley. The power mechanism is located at one end of the bed and is connected to the lead screw mechanism. The lead screw mechanism is mounted on the bed, and the feeding trolley is mounted on the lead screw mechanism. The power mechanism controls the movement of the lead screw mechanism, causing the feeding trolley to move along the lead screw mechanism. The feeding trolley is used to push the steel pipe towards the cold rolling mill body.

[0026] Furthermore, the power mechanism includes a servo motor, a gear set, and a connecting gear. The servo motor is connected to the gear set, one end of the connecting gear is connected to the gear set, and the other end is connected to the lead screw mechanism. The servo motor drives the gear set to rotate, and the connecting gear drives the lead screw mechanism to rotate. The lead screw mechanism includes a second threaded rod. Bearing seats are fixedly installed at both ends of the bed. The second threaded rod is rotatably mounted on the bearing seats through the bearings. The feed carriage is mounted on the second threaded rod through the lead screw nut.

[0027] A method of using a fully automatic continuous cold rolling mill for tubes, characterized by the following steps:

[0028] Step 1: The steel pipes are automatically fed into the feeding platform of the feeding module by the automatic feeding module;

[0029] (1) First, the feeding platform is moved by switching mechanism so that the first or second slide on the feeding platform corresponds to the automatic feeding module on one side;

[0030] (2) Then, the steel pipe located on the first step is lifted to the second step and the third step in sequence by the lifting mechanism, and when it is lifted to the third step, only one steel pipe is lifted. Then the steel pipe is lifted to the top of the support base and falls into the guide sliding mechanism through the inclined surface.

[0031] (3) The guide sliding mechanism controls the extension and retraction of the second guide plate through the guide cylinder, so that the second guide plate corresponds to the first slide groove or the second slide groove. After the steel pipe is lifted to the top of the support base, it falls onto the first guide plate through the inclined surface, and then falls into the first slide groove or the second slide groove through the second guide plate.

[0032] Step 2: The steel pipe located in the feeding table is pushed into the cold rolling mill body by the feeding module through the feeding mechanism;

[0033] (1) When the steel pipe falls into the first or second chute, the feeding platform is moved again by the switching mechanism so that the chute of the feeding platform with the steel pipe corresponds to the core rod chuck module. At this time, the other chute corresponds to the automatic feeding module on the other side.

[0034] (2) Then, the feeding mechanism controls the feeding plate to push the steel pipe to move and push the steel pipe into the cold rolling mill body;

[0035] (3) When the steel pipe in one side chute is pushed into the cold rolling mill body by the feeding mechanism, the other chute corresponds to the automatic feeding module on the other side. At this time, the automatic feeding module on the other side moves and lifts the steel pipe into another chute of the feeding platform. When the steel pipe in one of the chutes is pushed into the cold rolling mill body, the feeding platform is moved by the switching mechanism to achieve continuous feeding. Step 3: After the steel pipe enters the cold rolling mill body, the steel pipe is cold rolled and the steel pipe is continuously and intermittently fed into the cold rolling mill body by the feeding module. During the processing of the cold rolling mill body, the core rod chuck module clamps the core rod.

[0036] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0037] In this invention, a first chute and a second chute are provided on the feeding platform. Steel pipes fall into the first and second chutes through an automatic feeding module. During processing, the feeding platform is moved by a switching mechanism, so that one of the chutes containing the steel pipe corresponds to the mandrel chuck module, and the steel pipe is pushed into the mandrel chuck module by a feeding mechanism. At the same time, the other chute corresponds to the automatic feeding module on the other side, and the steel pipe falls into the other chute through the automatic feeding module. When the steel pipe in one chute is completely pushed into the mandrel chuck module, the feeding platform is moved again by the switching mechanism, so that the other chute corresponds to the mandrel chuck module. This process is repeated so that the cold rolling mill body can continuously process steel pipes, reducing the downtime of the cold rolling mill body and increasing production efficiency.

[0038] In this invention, the support base is provided with a first step, a second step, and a third step, with the height of the first step, the second step, and the third step increasing sequentially. The steel pipe is lifted sequentially from the first step to the second step, and then from the second step to the third step by a lifting mechanism. The width of the second lifting plate is the same as the sum of the widths of the inclined surface, the third step, and the lifting surface, ensuring that only one steel pipe is lifted when the steel pipe is lifted from the second step to the third step, thus avoiding lifting too many steel pipes at once into the feeding module. Attached Figure Description

[0039] The present invention will be further described below with reference to the accompanying drawings:

[0040] Figure 1 This is a schematic diagram of the structure of a fully automatic continuous cold rolling mill and method according to the present invention;

[0041] Figure 2 This is a schematic diagram of the automatic feeding module and the feeding module in this invention;

[0042] Figure 3 This is a schematic diagram of the supporting base and lifting mechanism in this invention;

[0043] Figure 4 In this invention Figure 3 Side view;

[0044] Figure 5 This is a schematic diagram of the guide sliding mechanism in this invention;

[0045] Figure 6 This is a schematic diagram of the feeding module in this invention;

[0046] Figure 7 This is a schematic diagram of the feeding platform in this invention;

[0047] Figure 8 This is a schematic diagram of the switching mechanism in this invention;

[0048] Figure 9 This is a schematic diagram of the switching mechanism in this invention;

[0049] Figure 10 This is a schematic diagram of the feeding mechanism in this invention;

[0050] Figure 11 This is a schematic diagram of the core rod chuck module in this invention;

[0051] Figure 12 In this invention Figure 11 Top view;

[0052] Figure 13 In this invention Figure 11 A sectional view;

[0053] Figure 14 This is a schematic diagram of the feeding module and the vehicle body in this invention;

[0054] Figure 15 For the present invention Figure 15 A magnified view of a section at point A in the middle;

[0055] Figure 16 For the present invention Figure 15 A magnified view of a section at point B in the middle.

[0056] In the diagram: 10-Cold rolling mill body; 11-Bed; 20-Feeding module; 21-Power mechanism; 211-Servo motor four; 212-Gear set; 213-Connecting gear; 22-Screw mechanism; 221-Second threaded rod; 222-Bearing seat; 23-Feeding carriage; 231-Screw nut; 30-Core rod chuck module; 31-Motor drive mechanism; 311-Servo motor three; 312-Second driving wheel; 313-Second driven wheel; 314-Bevel gear 315 - Wheel; 32 - Reduction gear; 32 - Hydraulic mechanism; 321 - Fixing frame; 322 - Hydraulic cylinder; 323 - Push frame; 324 - Extrusion ring; 325 - Pushing component; 326 - Pushing groove; 327 - Slot; 33 - Claw mechanism; 331 - Feeding pipe; 332 - Through hole; 333 - Claw; 334 - Inclined part; 40 - Feeding module; 41 - Feeding platform; 411 - Support base; 412 - First slide groove; 413 - Second slide groove; 42 - Switching Mechanism; 421-Servo Motor 1; 422-First Driving Gear; 423-First Driven Gear; 424-Switching Gear; 425-Switching Shaft; 426-First Tooth; 427-Second Tooth; 428-First Fixed Seat; 429-Sliding Seat; 43-Feeding Mechanism; 431-Servo Motor 2; 432-First Threaded Rod; 433-Guide Rod; 434-Feeding Plate; 435-Second Fixed Seat; 436-Threaded Hole; 437-Sliding Hole; 438-Protrusion ; 50 - Automatic feeding module; 51 - Support base; 511 - First step; 512 - Second step; 513 - Third step; 514 - Inclined surface; 515 - Lifting surface; 52 - Lifting mechanism; 521 - Lifting frame; 522 - Lifting cylinder; 523 - First lifting plate; 524 - Second lifting plate; 53 - Guide sliding mechanism; 531 - Mounting frame; 532 - Inclined plate; 533 - First guide plate; 534 - Second guide plate; 535 - Guide cylinder. Detailed Implementation

[0057] like Figures 1 to 16As shown, this invention discloses a fully automatic continuous cold rolling mill for tubes, comprising a cold rolling mill body 10, a bed 11, a feeding module 20, a mandrel chuck module 30, a feeding module 40, and an automatic loading module 50. The bed 11 is located on one side of the cold rolling mill body 10, with one end connected to the cold rolling mill body 10. The cold rolling mill body 10 is used for cold rolling steel tubes. The feeding module 20 is mounted on the bed 11 and is used to feed the steel tubes into the cold rolling mill in an intermittent feeding manner. In the machine body 10, the core rod chuck module 30 is located on one side of the feeding module 20. The core rod chuck module 30 is provided with a core rod that passes through the core rod chuck module 30, the feeding module 20 and the cold rolling mill body 10. The feeding module 40 is located on one side of the core rod chuck module 30 and is used to feed the steel pipe into the core rod chuck module 30. The automatic feeding module 50 is located on both sides of the feeding module 40 and is used to automatically push the steel pipe into the feeding module 40.

[0058] This invention first uses a crane or other means to transport a large number of steel pipes in batches to the automatic feeding module 50. In this embodiment, a support frame can be inclinedly set on one side of the support base 51 to support the steel pipes. By tilting the frame, the steel pipes slide down from the support frame into the first step 511 of the support base 51. Two automatic feeding modules 50 are provided, respectively located on both sides of the feeding module 40. Then, the automatic feeding module 50 sequentially lifts the steel pipes into the feeding module 40, and the steel pipes are fed into the feeding module 40. The material module 40 continuously feeds steel pipes into the cold rolling mill body 10, enabling continuous cold rolling of the steel pipes, reducing downtime of the cold rolling mill body 10, and increasing production efficiency. During the processing, the material module 20 intermittently feeds the steel pipes into the cold rolling mill body 10. During the cold rolling process, the mandrel chuck module 30 clamps the mandrel and drives the mandrel to rotate, ensuring that the steel pipe has a certain angle during cold rolling, thereby ensuring that the rolled pipe surface is wrinkle-free, smooth, and has a uniform wall thickness.

[0059] In this invention, the cold rolling mill body 10 is existing technology. For details, please refer to the utility model patent entitled "A rolling mill equipped with a clutch" (authorization announcement number: CN218963619U). Therefore, it will not be described further here.

[0060] The automatic feeding module 50 includes a support base 51, a lifting mechanism 52, and a guide sliding mechanism 53. The support base 51 is stepped and is used to support steel pipes. The lifting mechanism 52 is installed on the support base 51 and is used to lift the steel pipes sequentially to the top of the support base 51. The guide sliding mechanism 53 is installed between the support base 51 and the feeding module 40 and is used to guide the steel pipes into the feeding module 40. After the steel pipes are transported to the support frame, they slide down onto the support base 51 through the inclined support frame. The support base 51 supports the steel pipes to be processed. Then, the lifting mechanism 52 lifts the steel pipes on the support base 51 sequentially. After being lifted to the top of the support base 51, the steel pipes slide down into the feeding module 40 through the guide sliding mechanism 53.

[0061] The support base 51 is provided with a first step 511, a second step 512 and a third step 513. The height of the first step 511, the second step 512 and the third step 513 increases sequentially. The first step 511 and the second step 512 are both inclined. The top of the support base 51 near the guide sliding mechanism 53 is provided with an inclined surface 514, and the second step 512 is provided with a lifting surface 515.

[0062] The lifting mechanism 52 includes a lifting frame 521 and a lifting cylinder 522. The lifting frame 521 is installed between two support bases 51. The lifting cylinder 522 is connected to the lifting frame 521 and is used to control the lifting of the lifting frame 521. The lifting frame 521 is provided with lifting plates, including a first lifting plate 523 and a second lifting plate 524. The tops of both the first lifting plate 523 and the second lifting plate 524 are inclined, with the inclination direction towards the side of the guide sliding mechanism 53. The first lifting plate 523 corresponds to the first step 511. The width of the second lifting plate 524 is the same as the sum of the widths of the inclined surface 514, the third step 513, and the lifting surface 515. That is, in this embodiment, the width of the inclined surface 514 is a, the width of the third step 513 is b, the width of the lifting surface 515 is c, and the width of the second lifting plate 524 is the sum of a, b, and c. Figure 4 As shown.

[0063] In this embodiment, the steel pipe slides down from the support frame and lands on the first step 511. The lifting frame 521 is raised and lowered by the lifting cylinder 522, which in turn moves the first lifting plate 523 and the second lifting plate 524. The first lifting plate 523 lifts the steel pipe on the first step 511 upwards. Because the first lifting plate 523 is inclined, when it reaches the same height as the second step 512, the steel pipe slides into the second step 512 and continues to slide down until... The steel pipe falls onto the lifting surface 515, the width of which is the same as the diameter of a steel pipe. This design prevents the second lifting plate 524 from lifting multiple steel pipes at once. The second lifting plate 524 continues to lift a steel pipe on the lifting surface 515 until it falls into the third step 513. The third step 513 prevents the steel pipe from falling. When the second lifting plate 524 lifts the steel pipe to the inclined surface 514, the steel pipe slides down the inclined surface 514 into the guide sliding mechanism 53 and then falls into the feeding module 40.

[0064] The guide sliding mechanism 53 includes a mounting frame 531, an inclined plate 532, a first guide plate 533, a second guide plate 534, and a guide cylinder 535. The inclined plate 532 is mounted on the top of the mounting frame 531. The first guide plate 533 and the guide cylinder 535 are mounted on the inclined plate 532. The guide cylinder 535 is connected to the second guide plate 534. The guide cylinder 535 controls the extension and retraction of the second guide plate 534. The first guide plate 533 and the second guide plate 534 tilt downward at the same angle to prevent the steel pipe from getting stuck. When the steel pipe is lifted up, the guide cylinder 535 controls the second guide plate 534 to extend, thereby corresponding to the chute on the feeding table 41 to ensure that the steel pipe can accurately fall into the chute. When it is not needed, the guide cylinder 535 controls the second guide plate 534 to retract to avoid collision.

[0065] The feeding module 40 includes a feeding platform 41, a switching mechanism 42, and a feeding mechanism 43. The feeding platform 41 is mounted on the support base 411 via the switching mechanism 42. The feeding platform 41 has a first slide 412 and a second slide 413. The first slide 412 and the second slide 413 are used to place steel pipes. The switching mechanism 42 is used to control the movement of the feeding platform 41 so that the first slide 412 or the second slide 413 is aligned with the core rod. There are two feeding mechanisms 43, which correspond to the first slide 412 and the second slide 413. The feeding mechanism 43 is used to feed the steel pipes in the first slide 412 and the second slide 413 into the core rod chuck module 30.

[0066] In this invention, the feeding platform 41 has two states, which are switched by a switching mechanism 42. When the feeding platform 41 is in the first state, the first chute 412 is close to the automatic feeding module 50 on one side. The automatic feeding module 50 lifts the steel pipe into the first chute 412. Then the switching mechanism 42 moves to switch the feeding platform 41 to the second state. At this time, the first chute 412 of the feeding platform 41 corresponds to the core rod chuck module 30, and the second chute 413 corresponds to the automatic feeding module 50 on one side. The steel pipe in the first chute 412 is fed into the core rod chuck module 30 by the feeding mechanism 43, while the automatic feeding module 50 on the second chute 413 lifts the steel pipe into the second chute 413. This switching is repeated to achieve uninterrupted continuous feeding.

[0067] The switching mechanism 42 includes a servo motor 421, a first driving wheel 422, a first driven wheel 423, a switching gear 424, and a switching shaft 425. The first driving wheel 422 is mounted on the servo motor 421, and the first driven wheel 423 is mounted on the support base 411. The first driving wheel 422 meshes with the first driven wheel 423. The switching gear 424 is coaxially arranged with the first driven wheel 423, and two switching gears 424 and two first driven wheels 423 are provided respectively. The switching shaft 425 is located between the two switching gears 424. The switching gear 424 is provided with a first tooth 426. The first tooth 426 of the 24 is arranged in the same direction, and the switching shaft 425 is provided with a second tooth 427. The first tooth 426 and the second tooth 427 mesh. Through the meshing of the first tooth 426 and the second tooth 427, the two switching gears 424 drive the switching shaft 425 to reciprocate during rotation, thereby driving the feeding table 41 to reciprocate. The two ends of the switching shaft 425 are fixed to the bottom of the feeding table 41 by the first fixed seat 428. The support seat 411 is provided with a sliding seat 429. The switching shaft 425 is slidably mounted on the sliding seat 429. The sliding seat 429 is used to increase the stability of the movement of the switching shaft 425.

[0068] The feeding mechanism 43 includes a second servo motor 431, a first threaded rod 432, a guide rod 433, and a feeding plate 434. The second servo motor 431 is connected to the first threaded rod 432. The first threaded rod 432 and the guide rod 433 are both fixed on the feeding table 41 by a second fixed seat 435. The feeding plate 434 is provided with a threaded hole 436 and a sliding hole 437. The feeding plate 434 is mounted on the first threaded rod 432 through the threaded hole 436 and on the guide rod 433 through the sliding hole 437. The feeding plate 434 is provided with a protrusion 438, which is used to push the steel pipe. The protrusion 438 extends outward to ensure that the steel pipe can be completely pushed out.

[0069] The core rod chuck module 30 includes a motor drive mechanism 31, a hydraulic mechanism 32, and a jaw mechanism 33. The motor drive mechanism 31 is used to drive the jaw mechanism 33 to rotate, and the hydraulic mechanism 32 is used to control the jaw mechanism 33 to clamp or release the core rod.

[0070] The motor drive mechanism 31 includes a servo motor 311, a second driving wheel 312, a second driven wheel 313, a bevel gear 314, and a reduction gear 315. The servo motor 311 is connected to the second driving wheel 312, and the second driving wheel 312 meshes with the second driven wheel 313. The bevel gear 314 is coaxially arranged with the second driven wheel 313. The reduction gear 315 is mounted on the chuck mechanism 33, and the bevel gear 314 meshes with the reduction gear 315. Through the cooperation of the bevel gear 314 and the reduction gear 315, the rotation speed of the chuck mechanism is reduced, and excessive rotation speed is avoided.

[0071] The chuck mechanism 33 includes a feed pipe 331, a core rod installed inside the feed pipe 331, a reduction gear 315 installed on the feed pipe 331, a through hole 332 at the end of the feed pipe 331, a chuck 333 installed in the through hole 332, and an inclined part 334 at the end of the chuck 333 away from the through hole 332, so that the core rod can be clamped or released by the chuck 333.

[0072] Hydraulic mechanism 32 includes a fixed frame 321, a hydraulic cylinder 322, a push frame 323, and a compression ring 324. One end of the hydraulic cylinder 322 is hinged to one end of the fixed frame 321, and the other end of the hydraulic cylinder 322 is hinged to the push frame 323. The push frame 323 is hinged to the other end of the fixed frame 321. The compression ring 324 is sleeved on the feed pipe 331. The push frame 323 is provided with a pusher 325, and the compression ring 324 is provided with a pusher groove 326. 5 is located in the push groove 326. The extrusion ring 324 is provided with a groove 327 corresponding to the claw 333. The claw 333 is engaged in the groove 327. The movement of the hydraulic cylinder 322 pushes the push frame 323 to rotate. Due to the limiting design of the push member 325 and the push groove 326, the push member 325 pushes the extrusion ring 324 to move during the rotation of the push frame 323. During the movement of the extrusion ring 324, the extrusion claw 333 clamps or releases the core rod.

[0073] The feeding module 20 includes a power mechanism 21, a lead screw mechanism 22, and a feeding trolley 23. The power mechanism 21 is located at one end of the bed 11 and is connected to the lead screw mechanism 22. The lead screw mechanism 22 is mounted on the bed 11, and the feeding trolley 23 is mounted on the lead screw mechanism 22. The power mechanism 21 controls the movement of the lead screw mechanism 22. While the lead screw mechanism 22 rotates, it drives the feeding trolley 23 to move along the lead screw mechanism 22. The feeding trolley 23 pushes the steel pipe toward the cold rolling mill body 10, thereby realizing intermittent feeding.

[0074] The lead screw mechanism 22 includes a second threaded rod 221. Bearing seats 222 are fixedly installed at both ends of the bed 11. The second threaded rod 221 is rotatably mounted on the bearing seat 222 through the bearing. In this embodiment, there are two second threaded rods 221 to increase motion stability. The feed carriage 23 is mounted on the second threaded rod 221 through the lead screw nut 231.

[0075] The power mechanism 21 includes a servo motor 211, a gear set 212, and a connecting gear 213. The servo motor 211 is connected to the gear set 212. The design of the gear set 212 reduces the rotation speed of the lead screw mechanism 22. One end of the connecting gear 213 is connected to the gear set 212, and the other end is connected to the second threaded rod 221. The ends of the two second threaded rods 221 are respectively connected to one connecting gear 213. The two connecting gears 213 can be connected by a belt to increase the synchronicity of rotation. The servo motor 211 drives the gear set 212 to rotate, and the connecting gear 213 drives the lead screw mechanism 22 to rotate.

[0076] A method for using a fully automatic continuous cold rolling mill includes the following steps:

[0077] Step 1: The steel pipe is automatically fed into the feeding platform 41 of the feeding module 40 by the automatic feeding module 50.

[0078] (1) First, the feeding table 41 is moved by the switching mechanism 42 so that the first slide 412 or the second slide 413 on the feeding table 41 corresponds to the automatic feeding module 50 on one side.

[0079] (2) Then, the steel pipe located on the first step 511 is lifted sequentially to the second step 512 and the third step 513 by the lifting mechanism 52, and when it is lifted to the third step 513, only one steel pipe is lifted. Then the steel pipe is lifted to the top of the support base 51 and falls into the guide sliding mechanism 53 through the inclined surface 514.

[0080] (3) The guide sliding mechanism 53 controls the extension and retraction of the second guide plate 534 through the guide cylinder 535, so that the second guide plate 534 corresponds to the first slide groove 412 or the second slide groove 413. After the steel pipe is lifted to the top of the support base 51, it falls into the first guide plate 533 through the inclined surface 514, and then falls into the first slide groove 412 or the second slide groove 413 through the second guide plate 534.

[0081] Step 2: The steel pipe located in the feeding table 41 is pushed into the cold rolling mill body 10 by the feeding module 40 through the feeding mechanism 43;

[0082] (1) When the steel pipe falls into the first chute 412 or the second chute 413, the feeding platform 41 is moved again by the switching mechanism 42 so that the chute of the feeding platform 41 with the steel pipe corresponds to the core rod chuck module 30. At this time, the other chute corresponds to the automatic feeding module 50 on the other side.

[0083] (2) Then, the feeding mechanism 43 controls the feeding plate 434 to push the steel pipe to move and push the steel pipe into the cold rolling mill body 10.

[0084] (3) When the steel pipe in one side chute is pushed into the cold rolling mill body 10 by the feeding mechanism 43, the other chute corresponds to the automatic feeding module 50 on the other side. At this time, the automatic feeding module 50 on the other side moves and lifts the steel pipe into another chute of the feeding platform 41. When the steel pipe in one of the chutes is pushed into the cold rolling mill body 10, the feeding platform 41 is moved by the switching mechanism 42 to achieve continuous feeding.

[0085] Step 3: After the steel pipe enters the cold rolling mill body 10, the steel pipe is cold rolled. The steel pipe is continuously and intermittently fed into the cold rolling mill body 10 through the feeding module 20. During the processing of the cold rolling mill body 10, the core rod chuck module 30 clamps the core rod.

[0086] The present invention, through the above-described method steps, firstly achieves continuous feeding of steel pipes through the cooperation between the automatic feeding module 50 and the feeding module 40, thereby enabling the cold rolling mill body 10 to continuously process the steel pipes, reducing the downtime of the cold rolling mill body 10 and increasing production efficiency. At the same time, the feeding module 20 achieves continuous intermittent feeding of steel pipes into the cold rolling mill body 10, thereby realizing cold rolling processing. Through the design of the mandrel chuck module 30, the mandrel is clamped or released by the jaws 333. When processing the steel pipe, the mandrel is clamped by the jaws 333, thereby causing the mandrel chuck module 30 to drive the mandrel to rotate, ensuring that the steel pipe has a certain rotation angle during cold rolling, thus ensuring that the rolled pipe surface is wrinkle-free, smooth, and has a uniform wall thickness.

[0087] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A fully automatic continuous cold rolling mill for tubes, comprising a cold rolling mill body for cold rolling steel tubes; a bed disposed on one side of the cold rolling mill body, one end of the bed being connected to the cold rolling mill body; characterized in that... It also includes: a feeding module, which is mounted on the bed and is used to feed steel pipes into the cold rolling mill body in an intermittent feeding manner; a mandrel chuck module, which is located on one side of the feeding module and has a mandrel that passes through the mandrel chuck module, the feeding module, and the cold rolling mill body; the mandrel chuck module includes a motor drive mechanism, a hydraulic mechanism, and a jaw mechanism, the motor drive mechanism is used to drive the jaw mechanism to rotate, and the hydraulic mechanism is used to control the jaw mechanism to clamp or release the mandrel; the motor drive mechanism includes a servo motor, a second drive wheel, and... The system comprises a second driven wheel, a bevel gear, and a reduction gear. The servo motor is connected to the second driving wheel, which meshes with the second driven wheel. The bevel gear is coaxially arranged with the second driven wheel. The reduction gear is mounted on the chuck mechanism and meshes with the bevel gear. The chuck mechanism includes a feed pipe, a core rod installed inside the feed pipe, and a reduction gear mounted on the feed pipe. A through hole is provided at the end of the feed pipe, and a chuck is installed in the through hole. The end of the chuck away from the through hole has an inclined portion, allowing the chuck to clamp or release the core rod. The hydraulic mechanism includes a fixing frame. The system comprises a hydraulic cylinder, a pusher frame, and an extrusion ring. One end of the hydraulic cylinder is hinged to one end of the fixed frame, and the other end of the hydraulic cylinder is hinged to the pusher frame. The pusher frame is hinged to the other end of the fixed frame. The extrusion ring is sleeved on the feed pipe. The pusher frame has a pusher component, and the extrusion ring has a pusher groove in which the pusher component is located. The extrusion ring has a slot corresponding to the chuck, and the chuck engages in the slot. A feeding module is located on one side of the core rod chuck module and is used to feed the steel pipe into the core rod chuck module. The feeding module includes a feeding platform, a switching mechanism, and a feeding mechanism. The feeding platform is mounted on the support base via the switching mechanism. The feeding platform has a first slide groove and a second slide groove, which are used to place steel pipes. The switching mechanism is used to control the movement of the feeding platform so that the first slide groove or the second slide groove is aligned with the core rod. Two feeding mechanisms are installed, corresponding to the first slide groove and the second slide groove. The feeding mechanisms are used to feed the steel pipes in the first slide groove and the second slide groove into the core rod chuck module. An automatic feeding module is set on both sides of the feeding module. The automatic feeding module is used to automatically push the steel pipes into the feeding module.The automatic feeding module includes a support base, a lifting mechanism, and a guide sliding mechanism. The support base is stepped and supports steel pipes. The lifting mechanism is mounted on the support base and lifts the steel pipes sequentially to the top of the support base. The guide sliding mechanism is installed between the support base and the feeding module and guides the steel pipes into the feeding module. The support base has a first step, a second step, and a third step, with the heights of the first step, second step, and third step increasing sequentially. The first step and second step are inclined. The top of the support base near the guide sliding mechanism has an inclined surface, and the second step has a lifting surface with a width equal to the diameter of a steel pipe. The lifting mechanism includes... A lifting frame and a lifting cylinder are provided. The lifting frame is installed between two supporting bases, and the lifting cylinder is connected to the lifting frame. The lifting cylinder controls the lifting and lowering of the lifting frame. The lifting frame has lifting plates, including a first lifting plate and a second lifting plate. The tops of both the first and second lifting plates are inclined. The first lifting plate corresponds to the first step, and the width of the second lifting plate is the same as the sum of the widths of the inclined surface, the third step, and the lifting surface. The guide sliding mechanism includes a mounting frame, an inclined plate, a first guide plate, a second guide plate, and a guide cylinder. The inclined plate is installed on the top of the mounting frame, and the first guide plate and the guide cylinder are installed on the inclined plate. The guide cylinder is connected to the second guide plate and controls the extension and retraction of the second guide plate.

2. The fully automatic continuous cold rolling mill for tubes according to claim 1, characterized in that: The switching mechanism includes a servo motor, a first driving wheel, a first driven wheel, a switching gear, and a switching shaft. The first driving wheel is mounted on the servo motor, and the first driven wheel is mounted on the support base. The first driving wheel meshes with the first driven wheel. The switching gear is coaxial with the first driven wheel, and two switching gears and two first driven wheels are provided. The switching shaft is disposed between the two switching gears. The switching gear has a first tooth, and the switching shaft has a second tooth. The first tooth meshes with the second tooth. Both ends of the switching shaft are fixed to the bottom of the feed table by a first fixed seat. The support base is provided with a sliding seat, and the switching shaft is slidably mounted on the sliding seat. The sliding seat is used to increase the stability of the movement of the switching shaft.

3. The fully automatic continuous cold rolling mill for tubes according to claim 1, characterized in that: The feeding mechanism includes a second servo motor, a first threaded rod, a guide rod, and a feeding plate. The second servo motor is connected to the first threaded rod. Both the first threaded rod and the guide rod are fixed to the feeding platform by a second fixing seat. The feeding plate has a threaded hole and a sliding hole. The feeding plate is mounted on the first threaded rod through the threaded hole and on the guide rod through the sliding hole. The feeding plate has a protrusion for pushing the steel pipe.

4. The fully automatic continuous cold rolling mill for tubes according to claim 1, characterized in that: The feeding module includes a power mechanism, a lead screw mechanism, and a feeding trolley. The power mechanism is located at one end of the bed and is connected to the lead screw mechanism. The lead screw mechanism is mounted on the bed, and the feeding trolley is mounted on the lead screw mechanism. The power mechanism controls the movement of the lead screw mechanism, causing the feeding trolley to move along the lead screw mechanism. The feeding trolley is used to push the steel pipe toward the cold rolling mill body.

5. A fully automatic continuous cold rolling mill for tubes according to claim 4, characterized in that: The power mechanism includes a servo motor, a gear set, and a connecting gear. The servo motor is connected to the gear set. One end of the connecting gear is connected to the gear set, and the other end is connected to the lead screw mechanism. The servo motor drives the gear set to rotate, and the connecting gear drives the lead screw mechanism to rotate. The lead screw mechanism includes a second threaded rod. Bearing seats are fixedly installed at both ends of the bed. The second threaded rod is rotatably mounted on the bearing seats through the bearings. The feed carriage is mounted on the second threaded rod through a lead screw nut.

6. The method of using a fully automatic continuous cold rolling mill according to claim 3, characterized in that... Includes the following steps: Step 1: Automatically feed the steel pipes into the feeding platform of the feeding module through the automatic feeding module; (1) First, control the movement of the feeding platform through the switching mechanism so that the first or second chute on the feeding platform corresponds to the automatic feeding module on one side; (2) Then, lift the steel pipes located on the first step to the second and third steps in sequence through the lifting mechanism, and ensure that only one steel pipe is lifted when lifting to the third step, and then continue to lift the steel pipes to the top of the support base, and fall into the guide sliding mechanism through the inclined surface; (3) The guide sliding mechanism controls the extension and retraction of the second guide plate through the guide cylinder so that the second guide plate corresponds to the first or second chute. After the steel pipes are lifted to the top of the support base, they fall into the first guide plate through the inclined surface, and then fall into the first or second chute through the second guide plate; Step 2: Push the steel pipes located in the feeding platform into the cold rolling mill body through the feeding module through the feeding mechanism; (1) When the steel pipes fall After entering the first or second chute, the feeding platform is moved again by the switching mechanism so that the chute of the steel pipe on the feeding platform corresponds to the core rod chuck module. At this time, the other chute corresponds to the automatic feeding module on the other side. (2) Then the feeding mechanism controls the feeding plate to push the steel pipe to move and push the steel pipe into the cold rolling mill body. (3) When the steel pipe in one chute is pushed into the cold rolling mill body by the feeding mechanism, the other chute corresponds to the automatic feeding module on the other side. At this time, the automatic feeding module on the other side moves and lifts the steel pipe into another chute of the feeding platform. When the steel pipe in one of the chutes is pushed into the cold rolling mill body, the feeding platform is moved by the switching mechanism to achieve continuous feeding. Step 3: After the steel pipe enters the cold rolling mill body, the steel pipe is cold rolled and the steel pipe is continuously and intermittently fed into the cold rolling mill body by the feeding module. During the processing of the cold rolling mill body, the core rod chuck module clamps the core rod.

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