A cold drawn tube port polishing device and method

Abstract

The application discloses a cold-drawn pipe port polishing device and method, and particularly relates to the technical field of polishing devices, which comprises a clamping assembly for fixing the cold-drawn pipe, one side of the clamping assembly is provided with a hollow adjusting head, the outer side of the hollow adjusting head is provided with a polishing assembly, the polishing assembly comprises a plurality of fixing blocks located on the outer side of the hollow adjusting head, an electric push rod is arranged on the fixing blocks, a U-shaped plate is fixedly arranged at the front end of the electric push rod, a polishing belt is arranged in the U-shaped plate, and fixing pieces are fixedly arranged at both ends of the polishing belt. The electric push rod is retracted to make the rough polishing belt away from the cold-drawn pipe, and another electric push rod is controlled to be elongated to push another more fine polishing belt to perform polishing work. In this way, the operation of replacing the polishing belt can be completed without interrupting the polishing process, the polishing efficiency is ensured, and the operation is more convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polishing devices, in particular to a cold-drawn pipe port polishing device and method. BACKGROUND

[0002] A cold-drawn pipe is a seamless steel pipe manufactured by a cold working process, which has high dimensional accuracy and surface finish. The cold-drawing process improves the accuracy of the outer diameter and the inner diameter while maintaining a consistent wall thickness, and improves the surface quality.

[0003] During actual use, the cold-drawn pipe needs to be cut according to the use requirements. After cutting, the port will inevitably have a curled edge and burrs, so the port needs to be polished for subsequent use. For example, a hardware pipe port polishing device is disclosed in the prior art with publication number CN221517202U.

[0004] Common polishing tools in the prior art include sandpaper, sand belt, grinding wheel, and polishing disc, etc. For example, a metal pipe port polishing device is disclosed in the prior art with publication number CN221111054U. These polishing tools differ in coarseness, and the purpose of polishing the cold-drawn pipe port is to eliminate the curled edge and burrs and make the port smoother.

[0005] Therefore, a coarser polishing tool can be used to initially polish the port to be flat, and then a finer polishing tool is replaced to make the port smoother. However, the process of replacing the polishing tool and the timing of replacing the polishing tool need to be determined by human judgment, and the polishing process needs to be interrupted, which is difficult to achieve in automatic polishing. SUMMARY

[0006] The purpose of the present application is to provide a cold-drawn pipe port polishing device and method, which can complete the operation of replacing the polishing belt without interrupting the polishing process by retracting the electric push rod to control the polishing belt to approach or move away from the cold-drawn pipe, ensuring the polishing efficiency and being more convenient.

[0007] To achieve the above purpose, the present application provides the following technical solution: a cold-drawn pipe port polishing device, comprising a clamping assembly for fixing the cold-drawn pipe, a hollow adjusting head is arranged on one side of the clamping assembly, and a polishing assembly is arranged outside the hollow adjusting head.

[0008] The polishing assembly comprises a plurality of fixing blocks outside the hollow adjusting head, an electric push rod is arranged on the fixing block, a U-shaped plate is fixedly arranged at the front end of the electric push rod, and the extension and retraction of the electric push rod can control the front and back positions of the U-shaped plate.

[0009] The U-shaped plate is internally provided with polishing belts, both ends of the polishing belts are fixedly provided with fixing sheets, the fixing sheets are installed on the inner wall of the U-shaped plate through bolts, the U-shaped plate can be clamped at the port of the cold-drawn pipe, and the polishing belts are different in thickness.

[0010] Further, the hollow adjusting head is internally provided with an adjusting screw which is rotatably connected to the inner wall of the hollow adjusting head, the outer end of the adjusting screw is externally provided with two adjusting blocks through a threaded sleeve, the moving directions of the two adjusting blocks are opposite after the adjusting screw is rotated, the outer end of each adjusting block is fixedly provided with a plurality of protrusions, the front end of the hollow adjusting head is externally provided with a closing plate through bolts, the front end of the adjusting screw extends to the front side of the closing plate and is fixedly provided with a hand wheel.

[0011] Further, the outer end of the hollow adjusting head is externally provided with two groups of sliding grooves, the two groups of sliding grooves correspond to the two adjusting blocks respectively, the number of each group of sliding grooves is a plurality, the sliding grooves correspond to the protrusions one by one, the protrusions are embedded in the corresponding sliding grooves, the side of the fixing block facing the hollow adjusting head is hingedly provided with two supporting arms, one end of each supporting arm is hingedly connected to the protrusion on the outer end of each adjusting block, the number of the protrusions on the outer end of each adjusting block is equal to the number of the fixing block and corresponds to the fixing block one by one.

[0012] Further, the clamping assembly is externally provided with a base, the top end of the base is fixedly provided with a linear motor, the top end of the mover of the linear motor is fixedly provided with a supporting table, and the top end of the supporting table is externally provided with an end plate.

[0013] Further, the rear end of the hollow adjusting head is fixedly provided with a driving shaft, the outer end of the driving shaft is externally provided with an electric slip ring, the wire for controlling the electric push rod is connected to the electric slip ring, the electric push rod is powered without affecting the rotation of the driving shaft, the rear end of the driving shaft is rotatably connected to the end plate, the top end of the end plate is fixedly provided with a motor for driving the rotation of the driving shaft, the rear end of the driving shaft penetrates through the end plate, and the rear end of the driving shaft is in transmission with the output shaft of the motor through a belt.

[0014] Further, the supporting table is externally provided with a dust collection assembly at the end facing the cold-drawn pipe, the dust collection assembly comprises a collecting pipe arranged on the supporting table, the two sides of the collecting pipe are externally provided with exhaust fans, the exhaust fans can exhaust the air in the collecting pipe, and the one end of the collecting pipe is externally provided with a sleeve.

[0015] The top end of the sleeve is externally provided with an air inlet, the inner wall of the sleeve is externally provided with a filter bag, the open end of the filter bag is arranged in the sleeve, and the main body of the filter bag is arranged in the collecting pipe.

[0016] Further, the top end of the base is fixedly provided with a vertical column, the top end of the vertical column is fixedly provided with a controller which is electrically connected to the electric push rod, the electric push rod is arranged at the output end of the controller, the controller can also be connected to a computer through a network to display relevant data and control the polishing device through the computer and the controller.

[0017] The clamping assembly comprises an outer pipe clamp rotatably connected to one side of the stand towards the polishing assembly, a plurality of separation grooves are formed in the outer end of the outer pipe clamp, and a plurality of clamping bolts are arranged on the outer end of the outer pipe clamp through threads.

[0018] Further, a plurality of inclined blocks are fixedly arranged on the outer end of the outer pipe clamp, each inclined block is located between two adjacent separation grooves, a sliding sleeve is arranged on the outer end of the outer pipe clamp, hydraulic cylinders are arranged on both sides of the sliding sleeve, the rear ends of the hydraulic cylinders are fixedly connected to the stand, and the motor, the exhaust fan, the linear motor and the hydraulic cylinders are arranged on the output end of the controller.

[0019] The bottom end of the outer pipe clamp is fixedly provided with a pressing plate, the outer end of the stand is provided with a mounting bracket, pressure sensors are fixedly arranged on the inner walls on both sides of the mounting bracket, the bottom end of the pressing plate extends into the mounting bracket, and the two pressure sensors are located on both sides of the pressing plate; and the pressure sensors are arranged on the input end of the controller.

[0020] Further, a center pipe is fixedly arranged on the inner wall of the outer pipe clamp, a support air bag is fixedly arranged on the outer end of the center pipe, a plurality of air permeable holes are formed in the outer end of the center pipe, the air permeable holes are located in the support air bag, the support air bag is located inside the cold-drawn pipe, and the outer pipe clamp is sleeved on the outer end of the cold-drawn pipe.

[0021] The outer end of the center pipe is fixedly provided with a baffle, the rear end of the cold-drawn pipe is in contact with the baffle, the outer end of the center pipe is fixedly provided with an air guide pipe with a valve, the top end of the air guide pipe extends to the top of the outer pipe clamp, and the air guide pipe is located on the rear side of the baffle.

[0022] The polishing device also comprises a method for polishing the port of the cold-drawn pipe, and the specific steps are as follows:

[0023] Step one: fix the cold-drawn pipe to be polished on the clamping assembly, and the end to be polished is located outside the clamping assembly and faces the polishing assembly; when fixing, the end of the cold-drawn pipe not to be polished is inserted into the outer pipe clamp and abuts against the baffle, the center pipe and the support air bag are inserted into the inside of the cold-drawn pipe, the center pipe is inflated through the air guide pipe, the support air bag is inflated and supported in the inside of the cold-drawn pipe, the sliding sleeve is moved by the hydraulic cylinder, the outer pipe clamp is tightened due to the extrusion of the inclined blocks, the clamping bolts are tightened on the outer end of the cold-drawn pipe, the cold-drawn pipe is fixed from the outer end, and the clamping bolts can be adjusted in rotation and are suitable for cold-drawn pipes of different diameters.

[0024] Step two: after fixing the cold-drawing pipe, adjust the polishing assembly according to the diameter of the cold-drawing pipe, then drive the support table and the polishing assembly to move by using the linear motor, and finally fix the U-shaped plate at the port of the cold-drawing pipe to be polished, and when adjusting, rotate the hand wheel to drive the adjusting screw, and under the action of the screw thread, the protruding block moves along the adjusting screw, and the two are close to or far away from each other, when close, the protruding block pushes the support arm, and the fixing block moves away from the cold-drawing pipe, when far away, the protruding block pulls the support arm, and the fixing block moves close to the cold-drawing pipe;

[0025] Step three: after fixing the position of the polishing assembly, turn on the motor, drive the polishing assembly to rotate by using the motor, and polish the cold-drawing pipe, and at the same time, use the dust collection assembly to suck and collect the debris generated in the polishing process, when polishing, the motor drives the driving shaft to rotate, and then drives the hollow adjusting head and the polishing assembly, when polishing, the electric push rod pushes the U-shaped plate to move close to the cold-drawing pipe, so that the polishing belt in the U-shaped plate is in close contact with the port of the cold-drawing pipe, and at the same time, with the rotation of the polishing assembly, the polishing belt rubs against the port of the cold-drawing pipe, thereby playing a polishing role;

[0026] Step four: during polishing, the roughest polishing belt is used for polishing first, the polishing belt in contact with the cold-drawing pipe, and the remaining polishing belts are not in contact with the port of the cold-drawing pipe, and in the polishing process, the polishing belts are replaced in turn according to the order from coarse to fine, until all the polishing belts are polished, and the polishing work is completed, the port of the cold-drawing pipe is rough before polishing, and becomes smoother with the polishing, so the polishing resistance of each polishing belt is large at first and small at last, and the cold-drawing pipe is fixed on the clamping assembly, so the reaction force of the polishing resistance will make the outer clamp pipe have a tendency to rotate, and the pressing plate is clamped in the mounting bracket, so the outer clamp pipe will not actually rotate, but the rotating force of the outer clamp pipe will be applied to the pressure sensor on the side in the rotating direction of the outer clamp pipe through the pressing plate, and the greater the polishing resistance, the greater the stress of the pressure sensor, and the two change synchronously.

[0027] In the above technical solution, the technical effects and advantages provided by the present application are as follows:

[0028] 1. By retracting the electric push rod, the rough polishing belt is moved away from the cold-drawing pipe, and the other electric push rod is controlled to extend to push the other finer polishing belt to work, which can complete the operation of replacing the polishing belt without interrupting the polishing process, ensuring the polishing efficiency and being more convenient.

[0029] 2. By detecting the polishing resistance in the polishing process, the timing of replacing the polishing belt is judged according to the change of the polishing resistance, and when the polishing resistance changes from large to small until there is no longer a large change in the polishing process, it means that it is the timing to replace the polishing belt. This way can judge the timing of replacing the polishing belt without interrupting the polishing process, ensuring the polishing efficiency and being more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0031] Figure 1 is the overall structural diagram of the present application;

[0032] Figure 2 is the structural diagram of the polishing assembly and the supporting table of the present application;

[0033] Figure 3 is the structural diagram of the polishing assembly and the hollow adjusting head of the present application;

[0034] Figure 4 is the Figure 3 is the enlarged view of the middle A part;

[0035] Figure 5 is the internal structure diagram of the hollow adjusting head of the present application;

[0036] Figure 6 is the exploded view of the dust suction assembly of the present application;

[0037] Figure 7 is the structural diagram of the stand and clamping assembly of the present application;

[0038] Figure 8 is the structural diagram of the clamping assembly of the present application;

[0039] Figure 9 is the side view and sectional view of the clamping assembly of the present application;

[0040] Figure 10 is the structural diagram of the mounting bracket of the present application;

[0041] Figure 11 is the structural diagram of the sliding sleeve of the present application;

[0042] Figure 12 is the system diagram of the present application.

[0043] Explanation of reference signs:

[0044] Cold-drawing pipe; 2, base; 3, linear motor; 4, stand; 5, support table; 6, dust suction assembly; 601, collecting pipe; 602, exhaust fan; 603, sleeve; 604, air inlet; 605, filter bag;

[0045] Clamping assembly; 701, outer clamping pipe; 702, clamping bolt; 703, inclined block; 704, center pipe; 705, support air bag; 706, air hole; 707, baffle; 708, separation groove; 709, sliding sleeve; 710, hydraulic cylinder; 8, controller;

[0046] 9, polishing assembly; 901, electric push rod; 902, fixed block; 903, U-shaped plate; 904, fixed piece; 905, polishing belt; 10, motor; 11, pressing plate; 12, mounting bracket; 13, hollow adjusting head; 1301, adjusting block; 1302, protruding block; 1303, support arm; 1304, closing plate; 1305, adjusting screw; 1306, sliding groove; 14, drive shaft; 15, electric slip ring; 16, end plate; 17, pressure sensor. DETAILED DESCRIPTION

[0047] In order to make the technical personnel in the art better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0048] The present application provides a cold-drawing pipe port polishing device as shown in Figures 1-12 The cold-drawing pipe port polishing device comprises a clamping assembly 7 for fixing the cold-drawing pipe 1, one side of the clamping assembly 7 is provided with a hollow adjusting head 13, and the outer side of the hollow adjusting head 13 is provided with a polishing assembly 9.

[0049] The polishing assembly 9 comprises a plurality of fixed blocks 902 located on the outer side of the hollow adjusting head 13, the fixed blocks 902 are provided with electric push rods 901, the front end of the electric push rod 901 is fixedly provided with a U-shaped plate 903, and the front and back positions of the U-shaped plate 903 can be controlled by the extension and retraction of the electric push rod 901.

[0050] The U-shaped plate 903 is internally provided with polishing belts 905, the polishing belts 905 are fixedly provided with fixed pieces 904 at both ends, the fixed pieces 904 are installed on the inner wall of the U-shaped plate 903 through bolts, the U-shaped plate 903 can be clamped at the port of the cold-drawing pipe 1, and the thickness of each polishing belt 905 is different.

[0051] During polishing, the polishing assembly 9 rotates as a whole, the electric push rod 901 pushes the U-shaped plate 903 to approach the cold-drawing pipe 1, so that the polishing belts 905 in the U-shaped plate 903 are in close contact with the port of the cold-drawing pipe 1, and at the same time of contact, the polishing belts 905 are rubbed with the port of the cold-drawing pipe 1 along with the rotation of the polishing assembly 9, thereby playing a polishing role;

[0052] The roughest polishing belt 905 first performs polishing work, the polishing belt 905 performing polishing work is in contact with the cold-drawn pipe 1, and the remaining polishing belts 905 are not in contact with the port of the cold-drawn pipe 1. In the polishing process, each polishing belt 905 is replaced in turn according to the order from coarse to fine until all the polishing belts 905 are polished, and then the polishing work is completed;

[0053] When replacing, the controller 8 controls the corresponding electric push rod 901 to retract, so that the polishing belt 905 that has completed the work moves away from the cold-drawn pipe 1, and controls another electric push rod 901 to extend, so as to push another more fine polishing belt 905 to perform polishing work. This way can complete the operation of replacing the polishing belt 905 without interrupting the polishing process, ensuring the polishing efficiency and being more convenient.

[0054] In order to make the polishing assembly 9 suitable for cold-drawn pipes 1 of different diameters, as shown in Figure 3 , 5 The hollow adjusting head 13 is provided with an adjusting screw 1305 rotatably connected to the inner wall of the hollow adjusting head 13. The outer end of the adjusting screw 1305 is provided with two adjusting blocks 1301 through a threaded sleeve. The moving directions of the two adjusting blocks 1301 are opposite after the adjusting screw 1305 is rotated. The outer end of the adjusting block 1301 is fixedly provided with a plurality of protrusions 1302. The front end of the hollow adjusting head 13 is provided with a closing plate 1304 through a bolt. The front end of the adjusting screw 1305 extends to the front side of the closing plate 1304 and is fixedly provided with a hand wheel.

[0055] The outer end of the hollow adjusting head 13 is provided with two groups of sliding grooves 1306, and the two groups of sliding grooves 1306 correspond to the two adjusting blocks 1301 respectively. The number of each group of sliding grooves 1306 is a plurality. The sliding grooves 1306 correspond to the protrusions 1302 one by one. The protrusions 1302 are embedded in the corresponding sliding grooves 1306. The side of the fixed block 902 facing the hollow adjusting head 13 is hingedly provided with two support arms 1303. One end of each of the two support arms 1303 is hingedly connected to the protrusions 1302 at the outer end of each of the two adjusting blocks 1301. The number of the protrusions 1302 at the outer end of each of the two adjusting blocks 1301 is equal to the number of the fixed blocks 902 and corresponds to the fixed blocks 902 one by one.

[0056] The diameter of the cold-drawn pipe 1 is adjusted by the polishing assembly 9. The rotation of the hand wheel drives the adjusting screw 1305. Under the action of the thread, the protrusions 1302 move along the adjusting screw 1305. The two are close to each other or far away from each other. When they are close to each other, the protrusions 1302 push the support arms 1303, so that the fixed blocks 902 move away from the cold-drawn pipe 1. When they are far away from each other, the protrusions 1302 pull the support arms 1303, and the fixed blocks 902 move close to the cold-drawn pipe 1. In this way, the polishing assembly 9 is adjusted.

[0057] The distance between the polishing assembly 9 and the cold-drawn pipe 1 needs to be adjusted before and after polishing, as shown in Figure 1 ,2 As shown in the drawings, the clamping assembly 7 is provided with a base 2 at the bottom, the top end of the base 2 is fixedly provided with a linear motor 3, the top end of the mover of the linear motor 3 is fixedly provided with a support table 5, and the top end of the support table 5 is provided with an end plate 16;

[0058] The support table 5 and the polishing assembly 9 are driven to move by the linear motor 3, the polishing assembly 9 is close to the cold-drawn pipe 1, and finally the U-shaped plate 903 is clamped at the port to be polished of the cold-drawn pipe 1.

[0059] The hollow adjusting head 13 is fixedly provided with a drive shaft 14 at the rear end, the outer end of the drive shaft 14 is sleeved with an electric slip ring 15, the line for controlling the electric push rod 901 is connected on the electric slip ring 15, the electric push rod 901 is powered at the same time without affecting the rotation of the drive shaft 14, the rear end of the drive shaft 14 is rotationally connected with the end plate 16, and the top end of the end plate 16 is fixedly provided with a motor 10 for driving the drive shaft 14 to rotate;

[0060] The rear end of the drive shaft 14 penetrates the end plate 16, and the rear end of the drive shaft 14 and the output shaft of the motor 10 are driven by a belt, during polishing, the motor 10 drives the drive shaft 14 to rotate, and in turn drives the hollow adjusting head 13 and the polishing assembly 9.

[0061] In order to avoid the scattering of debris, as shown in the drawings, Figure 2 , 6 As shown in the drawings, one end of the support table 5 towards the cold-drawn pipe 1 is provided with a dust collection assembly 6, the dust collection assembly 6 comprises a collecting pipe 601 provided on the support table 5, and exhaust fans 602 are provided on both sides of the collecting pipe 601, the exhaust fans 602 can exhaust the air in the collecting pipe 601, and a sleeve pipe 603 is sleeved at one end of the collecting pipe 601.

[0062] An air inlet 604 is formed at the top end of the sleeve pipe 603, a filter bag 605 is arranged on the inner wall of the sleeve pipe 603, the open end of the filter bag 605 is arranged in the sleeve pipe 603, and the main body part of the filter bag 605 is arranged in the collecting pipe 601.

[0063] The air in the collecting pipe 601 is exhausted by the exhaust fans 602, so that the inside of the collecting pipe 601 is under negative pressure, and thus the suction force is generated, the polishing position is located above the air inlet 604, under the action of the suction force, the debris generated in the polishing process is sucked into the sleeve pipe 603 and the collecting pipe 601, then the air is exhausted after being filtered by the filter bag 605, and the debris is collected in the filter bag 605 for unified treatment, so as to avoid the scattered debris during polishing and difficult to clean.

[0064] In order to clamp and fix the cold-drawn pipe 1, as shown in the drawings, Figures 7-12As shown, the base 2 top end fixedly provided with a column 4, the column 4 top end fixedly provided with the controller 8 electrically connected with the electric push rod 901, electric push rod 901 is arranged in the output end of the controller 8, the controller 8 can also be connected to the computer through the network, so as to display relevant data and control the polishing device through the computer and the controller 8;

[0065] The clamping assembly 7 includes a rotating connection in the column 4 towards the polishing assembly 9 side outer clamp pipe 701, the outer clamp pipe 701 outer end is provided with a plurality of separation groove 708, the outer clamp pipe 701 outer end is provided with a plurality of clamping bolt 702 through screw thread.

[0066] The outer clamp pipe 701 outer end fixedly provided with a plurality of inclined block 703, each inclined block 703 is located between the adjacent two separation groove 708, the outer clamp pipe 701 outer end is provided with a sliding sleeve 709, the sliding sleeve 709 both sides are provided with hydraulic cylinder 710, the hydraulic cylinder 710 rear end and column 4 fixed connection, motor 10, exhaust fan 602, linear motor 3 and hydraulic cylinder 710 are arranged in the output end of the controller 8;

[0067] The outer clamp pipe 701 bottom end fixedly provided with a pressure plate 11, the column 4 outer end is provided with mounting bracket 12, the mounting bracket 12 both sides inner wall is fixedly provided with pressure sensor 17, the pressure plate 11 bottom end extends into the mounting bracket 12, two pressure sensors 17 are located on both sides of the pressure plate 11, the pressure sensor 17 is arranged in the input end of the controller 8.

[0068] Through the hydraulic cylinder 710 to push the sliding sleeve 709 movement, the sliding sleeve 709 extrusion in the process of movement in the outer end of the inclined block 703, because the outer end of the inclined block 703 is inclined, so the extrusion of the inclined block 703 makes the outer clamp pipe 701 tight, clamping bolt 702 thus clamped in the outer end of the cold drawn pipe 1, so as to fix the cold drawn pipe 1 from the outer end, clamping bolt 702 can be adjusted, suitable for different diameter of cold drawn pipe 1.

[0069] The port of the cold drawn pipe 1 is rough before polishing, and becomes smooth with the polishing, so the polishing resistance of each polishing belt 905 in the polishing process is first large and then small, and the cold drawn pipe 1 is fixed on the clamping assembly 7, the reaction force of the polishing resistance will make the outer clamp pipe 701 have the tendency of rotation, and the pressure plate 11 is clamped in the mounting bracket 12, so the outer clamp pipe 701 will not actually rotate;

[0070] However, the force of the rotation of the outer clamp tube 701 is applied to the pressure sensor 17 on the side of its rotation direction through the pressure plate 11. The greater the grinding resistance, the greater the force on the pressure sensor 17. The two change synchronously. When a certain grinding belt 905 is grinding, the force on the pressure sensor 17 will decrease from large to small. When the force on the pressure sensor 17 decreases to the point where it no longer changes significantly, it means that the grinding belt 905 has been sufficiently ground and a finer grinding belt 905 can be replaced for grinding. This method can determine the timing of replacing the grinding belt 905 without interrupting the grinding process, ensuring grinding efficiency and making it more convenient. For cold-drawn tubes of the same diameter, the greater the grinding resistance, the greater the force on the pressure sensor 17. However, the larger the diameter of the cold-drawn tube, the larger the lever arm of the grinding resistance, and the greater the force on the pressure sensor 17. Therefore, the judgment criteria need to be changed accordingly when grinding cold-drawn tubes of different diameters.

[0071] While fixing the cold-drawn tube 1, it is also necessary to support it, such as Figure 9 As shown, a central tube 704 is fixedly provided on the inner wall of the outer clamp tube 701, and a supporting airbag 705 is fixedly provided on the outer end of the central tube 704. A plurality of vent holes 706 are opened on the outer end of the central tube 704. The vent holes 706 are located in the supporting airbag 705. The supporting airbag 705 is located inside the cold-drawn tube 1, and the outer clamp tube 701 is sleeved on the outer end of the cold-drawn tube 1.

[0072] A baffle 707 is fixedly provided at the outer end of the central tube 704. The rear end of the cold-drawn tube 1 is in contact with the baffle 707. A gas guide pipe with a valve is fixedly provided at the outer end of the central tube 704. The top end of the gas guide pipe extends to the top of the outer clamp tube 701. The gas guide pipe is located behind the baffle 707.

[0073] When fixing, the end of the cold-drawn tube 1 that does not need to be polished is inserted into the outer clamp tube 701 and pressed against the baffle 707. At the same time, the central tube 704 and the support airbag 705 are inserted into the cold-drawn tube 1. Meanwhile, air is inflated into the central tube 704 through the air guide tube. Air enters the support airbag 705 through the vent 706. The support airbag 705 expands due to inflation and is supported inside the cold-drawn tube 1.

[0074] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cold drawn tube port polishing device comprising a clamping assembly (7) for securing a cold drawn tube (1), characterized in that: The clamping assembly (7) is provided with a hollow adjusting head (13) on one side, and the outer side of the hollow adjusting head (13) is provided with a polishing assembly (9); The polishing assembly (9) comprises a plurality of fixed blocks (902) located on the outer side of the hollow adjusting head (13), and an electric push rod (901) is arranged on the fixed block (902); and a U-shaped plate (903) is fixedly arranged at the front end of the electric push rod (901); The U-shaped plate (903) is internally provided with a polishing belt (905), and the polishing belt (905) is fixedly provided with a fixed sheet (904) at both ends; the fixed sheet (904) is mounted on the inner wall of the U-shaped plate (903), and the thickness of each polishing belt (905) is different; The inner wall of the hollow adjusting head (13) is rotatably connected with an adjusting screw (1305), the outer end of the adjusting screw (1305) is sleeved with two adjusting blocks (1301) through threads, the outer end of the adjusting block (1301) is fixedly provided with a plurality of protrusions (1302), the front end of the hollow adjusting head (13) is provided with a closed plate (1304), and the front end of the adjusting screw (1305) extends to the front side of the closed plate (1304); The outer end of the hollow adjusting head (13) is provided with two groups of sliding grooves (1306), and the two groups of sliding grooves (1306) correspond to the two adjusting blocks (1301) respectively; the sliding groove (1306) corresponds to the protrusion (1302) one by one, the protrusion (1302) is embedded in the corresponding sliding groove (1306), and the side of the fixed block (902) facing the hollow adjusting head (13) is hingedly provided with two supporting arms (1303), one end of the two supporting arms (1303) is hingedly connected with the protrusions (1302) at the outer end of the two adjusting blocks (1301) respectively; The bottom of the clamping assembly (7) is provided with a base (2), the top end of the base (2) is fixedly provided with a linear motor (3), the top end of the mover of the linear motor (3) is fixedly provided with a support table (5), and the top end of the support table (5) is provided with an end plate (16); The rear end of the hollow adjusting head (13) is fixedly provided with a driving shaft (14), the outer end of the driving shaft (14) is sleeved with an electric slip ring (15), the rear end of the driving shaft (14) is rotatably connected with the end plate (16), and the top end of the end plate (16) is fixedly provided with a motor (10) for driving the driving shaft (14) to rotate.

2. A cold drawn tube port polishing device according to claim 1, wherein: The end of the support table (5) facing the cold-drawn pipe (1) is provided with a dust collection assembly (6), the dust collection assembly (6) comprises a collecting pipe (601) arranged on the support table (5), and the two sides of the collecting pipe (601) are provided with exhaust fans (602); and one end of the collecting pipe (601) is sleeved with a sleeve pipe (603); The top end of the sleeve pipe (603) is provided with an air inlet (604), and the inner wall of the sleeve pipe (603) is provided with a filter bag (605).

3. A cold drawn tube port polishing device as defined in claim 1, wherein: The top end of the base (2) is fixedly provided with a stand column (4), and the top end of the stand column (4) is fixedly provided with a controller (8) electrically connected with the electric push rod (901). The clamping assembly (7) comprises an outer clamping pipe (701) rotatably connected to one side of the stand (4) towards the polishing assembly (9), a plurality of separation grooves (708) are formed in the outer end of the outer clamping pipe (701), and a plurality of clamping bolts (702) are arranged on the outer end of the outer clamping pipe (701) through threads.

4. A cold drawn tube port polishing device according to claim 3, wherein: A plurality of inclined blocks (703) are fixedly arranged on the outer end of the outer clamping pipe (701), a sliding sleeve (709) is arranged on the outer end of the outer clamping pipe (701), hydraulic cylinders (710) are arranged on both sides of the sliding sleeve (709), and the rear ends of the hydraulic cylinders (710) are fixedly connected with the stand (4). A pressing plate (11) is fixedly arranged at the bottom end of the outer clamping pipe (701), an installation support (12) is arranged at the outer end of the stand (4), pressure sensors (17) are fixedly arranged on the inner walls on both sides of the installation support (12), the bottom end of the pressing plate (11) extends into the installation support (12), and the two pressure sensors (17) are respectively located on both sides of the pressing plate (11).

5. A cold drawn tube port polishing device as defined in claim 4, wherein: A center pipe (704) is fixedly arranged on the inner wall of the outer clamping pipe (701), a supporting air bag (705) is fixedly arranged at the outer end of the center pipe (704), a plurality of air holes (706) are formed in the outer end of the center pipe (704), and the air holes (706) are located in the supporting air bag (705). A baffle (707) is fixedly arranged at the outer end of the center pipe (704), the rear end of the cold-drawn pipe (1) is in contact with the baffle (707), and a gas guide pipe with a valve is fixedly arranged at the outer end of the center pipe (704).

6. A method of deburring a cold drawn tube end port using the deburring device of any one of claims 1-5, characterized in that: The specific steps are as follows: Step one: fix the cold-drawn pipe (1) to be polished on the clamping assembly (7), and the end to be polished is located outside the clamping assembly (7) and faces the polishing assembly (9); Step two: after the cold-drawn pipe (1) is fixed, the polishing assembly (9) is adjusted according to the diameter of the cold-drawn pipe (1), then the support table (5) and the polishing assembly (9) are driven to move by the linear motor (3), the polishing assembly (9) is close to the cold-drawn pipe (1), and finally the U-shaped plate (903) is clamped at the port to be polished of the cold-drawn pipe (1); Step three: after the position of the polishing assembly (9) is fixed, the motor (10) is turned on, the polishing assembly (9) is driven to rotate by the motor (10), the cold-drawn pipe (1) is polished, and the dust generated in the polishing process is sucked and collected by the dust suction assembly (6); Step four: during polishing, the roughest polishing belt (905) is used for polishing first, and then each polishing belt (905) is replaced in order from coarse to fine during polishing until all the polishing belts (905) are polished, and the polishing work is completed.

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