A straightening device for copper pipe processing and a straightening method thereof

Abstract

The application discloses a straightening device for copper pipe processing and a straightening method thereof and belongs to the technical field of metal processing equipment. The straightening device comprises a base, a shaping mechanism and a cutting mechanism. The shaping mechanism comprises two groups of outer straightening assemblies and an inner straightening assembly. The two groups of outer straightening assemblies are horizontally arranged on the base. The inner straightening assembly is arranged at the output end of the left outer straightening assembly. The inner straightening assembly comprises a lifting part, a cross bar, a supporting block, a rotating part and three groups of rolling parts. The rolling part comprises a clamping frame, a roller and a first telescopic cylinder. The outer side surface of the roller is a circular arc surface, and the radius of the circular arc surface is equal to the inner circle of the copper pipe. The central angle of the circular arc of the roller is 60 degrees. The cutting mechanism is used for cutting the copper pipe. The cross bar is provided with a pneumatic mechanism for detecting the copper pipe. The application effectively solves the problem that the recessed area of the copper pipe cannot be corrected, resulting in the defect of the cylindricity of the copper pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal processing equipment, in particular to a straightening device for copper pipe processing and a straightening method thereof. BACKGROUND

[0002] Copper pipe is a seamless round pipe pressed and drawn, which has good electrical conductivity and thermal conductivity characteristics, is the main material of electronic product conductive accessories and heat dissipation accessories, has strong corrosion resistance and is not easy to oxidize, becomes the first choice for installation of modern house water pipeline, heating and refrigeration pipeline, and is generally coiled into a disc for transportation and sale after production. When used, it needs to be straightened and cut into the required length.

[0003] The existing straightening method is mostly through mechanical equipment. For example, the straightening device of the inverted disc copper pipe drawing machine disclosed in the invention patent with the announcement number CN107186005B, the copper pipe finishing straightening device disclosed in the invention patent application with the publication number CN116727493A, and the copper pipe straightening machine disclosed in the utility model patent with the announcement number CN221231985U all embed the copper pipe in multiple pressure roller structures to straighten the copper pipe by rolling, but only the outer side of the copper pipe can be straightened, and the area of the copper pipe that is recessed towards the core cannot be corrected, which leads to defects in the cylindricality of the copper pipe and affects the conveying efficiency of the copper pipe. SUMMARY

[0004] The purpose of the present application is to provide a straightening device for copper pipe processing and a straightening method thereof to solve the problem of defects in the cylindricality of the copper pipe caused by the inability to correct the area of the copper pipe that is recessed towards the core when straightening the copper pipe by rolling.

[0005] To achieve the above purpose, the present application provides the following technical solutions:

[0006] A straightening device for copper pipe processing, comprising: a base, a shaping mechanism and a cutting mechanism, the shaping mechanism and the cutting mechanism are both arranged on the upper side of the base;

[0007] The shaping mechanism comprises two groups of outer straightening assemblies and an inner straightening assembly, the two groups of outer straightening assemblies are both horizontally arranged on the base, the inner straightening assembly is arranged at the output end of the left outer straightening assembly, and the cutting mechanism is arranged at the input end of the right outer straightening assembly;

[0008] The inner straightening assembly comprises a lifting component, a crossbar, a support block, a rotating component and three groups of rolling components, the crossbar is horizontally slidably sleeved in the rotating component, the rotating component is arranged in the lifting component, the support block is fixedly installed at the right end of the crossbar, the three groups of rolling components are arranged in the support block and are uniformly distributed in a ring shape, the rolling component comprises a clamping frame, a roller and a first telescopic cylinder, the clamping frame is slidably sleeved in the support block, the roller is rotatably sleeved at the outer end of the clamping frame, and the first telescopic cylinder is fixedly sleeved in the support block and is fixedly connected with the inner end of the clamping frame through an output end.

[0009] The outer side of the roller is a circular arc surface, and the arc is equal to the inner circle of the copper pipe, and the central angle corresponding to the circular arc of the roller is sixty degrees.

[0010] The cutting mechanism is used for cutting the copper pipe, and the crossbar is provided with a pneumatic mechanism for detecting the copper pipe.

[0011] Preferably, the lifting component comprises a stand, a sliding block and a second telescopic cylinder, the stand is vertically fixedly installed on the base, the sliding block is vertically slidably embedded in the stand, the second telescopic cylinder is vertically arranged and the upper and lower ends thereof are fixedly connected with the inner top wall of the stand and the top of the sliding block respectively, and the rotating component is rotatably installed in the sliding block.

[0012] Preferably, the rotating component comprises a rotating block, a worm gear, a worm and a first motor, the rotating block is rotatably sleeved in the support block, the worm gear is fixedly sleeved on the rotating block, the first motor is fixedly installed in the sliding block, the worm is horizontally fixedly installed at the output end of the first motor and is meshingly connected with the worm gear, the crossbar is horizontally slidably sleeved in the rotating block, and the rotating block is provided with a push-pull component for driving the crossbar to move.

[0013] Preferably, the outer straightening assembly comprises two connecting racks, two groups of pushing components and two groups of supporting components, the pushing component comprises a plurality of pulleys, a conveying belt, a plurality of pressing blocks and a plurality of pairs of magnetic blocks, the two connecting racks are connected through the two groups of supporting components, the two groups of pushing components are symmetrically arranged in the two connecting racks in an up-down manner, the plurality of pulleys are all horizontally rotatably installed in the connecting rack, the conveying belt is horizontally rotatably embedded outside the plurality of pulleys, the plurality of pressing blocks are all fixedly embedded outside the conveying belt, the pressing blocks are semicircular arches, the plurality of pairs of magnetic blocks are respectively fixedly installed at the end portions of the plurality of pressing blocks, the magnetic poles of the magnetic blocks on the same side of the two groups of pushing components are different, the inner diameter of the pressing block is equal to the outer diameter of the standard copper pipe, the first motor is a double-head structure, and the upper and lower output ends thereof are meshingly connected with the outer ends of the two pulleys through a gear set, and the gear set enables the two pulleys corresponding to the upper and lower output ends to synchronously and reversely rotate.

[0014] Preferably, the support component comprises a support frame, a support ring and a plurality of connecting rods, the support frame is vertically fixedly installed on the base, the support ring is rotatably embedded in the support frame, the plurality of connecting rods are arranged in the support ring, and two ends of each connecting rod are fixedly connected with the inner wall of the support ring and the outer side of the connecting frame respectively, and two groups of support components located at the outer ends are connected through a linkage mechanism, and the linkage mechanism enables the two support rings located at the two ends to synchronously and reversely rotate.

[0015] Preferably, the linkage mechanism comprises a second motor, a second gear and two groups of transmission assemblies, the transmission assembly comprises a plurality of supports, a main shaft, a gear ring, a third gear and a fourth gear, the plurality of supports are vertically fixedly installed on the base, the main shaft is horizontally rotatably sleeved in the plurality of supports, the second motor is vertically fixedly installed on the base and located between the two main shafts, the second gear is fixedly installed on the top of the output end of the second motor, the third gear is fixedly installed on the end of the main shaft close to the second motor and is in meshing connection with the second gear, the gear ring is fixedly sleeved on the support ring, and the fourth gear is fixedly sleeved on the end of the main shaft away from the second motor and is in meshing connection with the gear ring.

[0016] Preferably, the pneumatic mechanism comprises a gas pump device, a sealing block and a gas bag, the gas pump device is fixedly installed at the bottom side of the cross rod, the sealing block is fixedly sleeved on the cross rod, and the gas bag is fixedly sleeved on the sealing block, the output end of the gas pump device is fixedly sleeved in the sealing block and is in communication with the inside of the gas bag, the side of the sealing block is fixedly installed with a pressure relief pipe, the outer end of the pressure relief pipe is fixedly installed with an electromagnetic valve device, the inner end of the pressure relief pipe is fixedly connected in communication with the inside of the gas bag, and the inside of the gas bag is fixedly installed with a pressure sensing device.

[0017] A copper pipe processing straightening method

[0018] S1: one-time external straightening, the copper pipe is sent into the external straightening assembly, and external straightening of surface contact is performed;

[0019] S2: internal rolling straightening, the internal straightening assembly is operated to perform reciprocating rolling treatment on the inner wall of the copper pipe, so that the inner wall of the copper pipe is straightened;

[0020] S3: two-time external straightening, the two groups of external straightening assemblies synchronously and reversely rotate to perform circumferential external straightening operation on the copper pipe;

[0021] S4: detecting the inside of the copper pipe, detecting the cylindricity of the inner wall of the copper pipe through air pressure test, and the cylindricity of the outside is controlled by the external straightening assembly, so that the cylindricity of the copper pipe is ensured to be in a standard state;

[0022] S5: cutting and separating, separating the pipe segment subjected to the straightening operation from the area to be subjected to the straightening operation, and completing the straightening and separation operation.

[0023] The beneficial effects of the present application are as follows:

[0024]

[0024] 1. In the operation of the inner straightening assembly, the copper pipe after outer straightening can be subjected to inner straightening operation, so that the inner side and the outer side of the copper pipe are subjected to straightening force, and the cylindricity of the copper pipe is ensured;

[0025] 2. The two groups of pushing components on the side close to each other form a complete cylindrical pipe structure, and the inner diameter of the channel is equal to the standard outer diameter of the copper pipe, and forms a surface contact with the outer side of the copper pipe. Compared with the line contact of the rolling wheel, the straightening force can be applied more fully, so that the straightening efficiency of the copper pipe is higher and the quality is better;

[0026] 3. Under the cooperation of the linkage mechanism and the supporting component, the outer straightening assembly is synchronously and reversely rotated, so as to perform circumferential straightening operation on the copper pipe, and further ensure the straightening quality of the copper pipe;

[0027] 4. Under the cooperation of the pneumatic mechanism, the cylindricity inside the copper pipe is detected by changing the air pressure value, so as to ensure the quality of the straightening operation. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a three-dimensional structure schematic diagram of a straightening device for copper pipe processing proposed by the present application;

[0029] Figure 2 It is a front view structure schematic diagram of a straightening device for copper pipe processing proposed by the present application;

[0030] Figure 3 It is a front view partial cross-section structure schematic diagram of an inner straightening assembly in a straightening device for copper pipe processing proposed by the present application;

[0031] Figure 4 It is a side view partial cross-section structure schematic diagram of an inner straightening assembly in a straightening device for copper pipe processing proposed by the present application;

[0032] Figure 5 It is a structure enlarged view of A in Figure 1

[0033] ​In the figure: 1, base; 2, crossbar; 3, support block; 4, clamping frame; 5, roller; 6, first telescopic cylinder; 7, stand; 8, sliding block; 9, second telescopic cylinder; 10, rotating block; 11, worm wheel; 12, worm; 13, first motor; 14, second motor; 15, first gear; 16, rack; 17, connecting frame; 18, pulley; 19, conveying belt; 20, pressing block; 21, magnetic block; 22, first motor; 23, support frame; 24, support ring; 25, connecting rod; 26, guide rail; 27, power sliding table device; 28, wire cutting device; 29, second motor; 30, second gear; 31, support; 32, main shaft; 33, gear ring; 34, third gear; 35, fourth gear; 36, air pump device; 37, sealing block; 38, air bag; 39, pressure relief pipe; 40, electromagnetic valve device; 41, pressure sensing device. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, only some of the embodiments of the present application are described, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0035] Reference Figures 1-5 A straightening device for copper pipe processing, comprising a base 1, a shaping mechanism and a cutting mechanism, both of which are arranged on the upper side of the base 1.

[0036] The shaping mechanism comprises two groups of outer straightening assemblies and an inner straightening assembly. The two groups of outer straightening assemblies are both horizontally arranged on the base 1, and the inner straightening assembly is arranged at the output end of the left outer straightening assembly. The cutting mechanism is arranged at the input end of the right outer straightening assembly.

[0037] The inner straightening assembly comprises a lifting component, a crossbar 2, a support block 3, a rotating component and three groups of rolling components. The crossbar 2 is horizontally and slidingly sleeved in the rotating component, and the rotating component is arranged in the lifting component. The support block 3 is fixedly installed at the right end of the crossbar 2. The three groups of rolling components are all arranged in the support block 3 and are uniformly distributed in a ring shape. The rolling component comprises a clamping frame 4, a roller 5 and a first telescopic cylinder 6. The clamping frame 4 is slidingly sleeved in the support block 3. The roller 5 is rotatably sleeved at the outer end of the clamping frame 4. The first telescopic cylinder 6 is fixedly sleeved in the support block 3, and the output end is fixedly connected with the inner end of the clamping frame 4.

[0038] The outer side surface of the roller 5 is a circular arc surface, and the radius of the circular arc surface is equal to the inner radius of the copper pipe. The central angle of the circular arc corresponding to the roller 5 is sixty degrees.

[0039] The cutting mechanism is used for segmenting the copper pipe. The crossbar 2 is provided with a pneumatic mechanism for detecting the copper pipe.

[0040] The electrical devices are powered by external power supply, and the whole device is controlled by the control terminal. Since the control terminal is a commonly used device, it belongs to existing mature technology, and its electrical connection relationship and specific circuit structure are not described here.

[0041] The lifting component includes a stand 7, a sliding block 8 and a second telescopic cylinder 9. The stand 7 is vertically fixedly installed on the base 1. The sliding block 8 is vertically slidably embedded in the stand 7. The second telescopic cylinder 9 is vertically arranged and fixedly connected with the top wall in the stand 7 and the top of the sliding block 8 at the upper and lower ends, respectively. The rotating component is rotatably installed in the sliding block 8.

[0042] The rotating component includes a rotating block 10, a worm gear 11, a worm 12 and a first motor 13. The rotating block 10 is rotatably sleeved in the supporting block 3. The worm gear 11 is fixedly sleeved on the rotating block 10. The first motor 13 is fixedly installed in the sliding block 8. The worm 12 is fixedly installed on the output end of the first motor 13 and is in meshing connection with the worm gear 11. The crossbar 2 is horizontally slidably sleeved in the rotating block 10. The rotating block 10 is provided with a push-pull component for driving the crossbar 2 to move.

[0043] The push-pull component includes a second motor 14, a first gear 15 and a rack 16. The second motor 14 is fixedly installed in the rotating block 10. The rack 16 is fixedly installed on the upper side of the crossbar 2. The first gear 15 is fixedly installed on the second motor 14 and is in meshing connection with the rack 16.

[0044] The outer straightening assembly includes two connecting frames 17, two groups of pushing components and two groups of supporting components. The pushing component includes a plurality of pulleys 18, a conveying belt 19, a plurality of pressing blocks 20 and a plurality of pairs of magnetic blocks 21. The two connecting frames 17 are connected by the two groups of supporting components. The two groups of pushing components are symmetrically arranged in the two connecting frames 17. The plurality of pulleys 18 are all horizontally rotatably installed in the connecting frames 17. The conveying belt 19 is horizontally rotatably embedded on the outer side of the plurality of pulleys 18. The plurality of pressing blocks 20 are all fixedly embedded on the outer side of the conveying belt 19. The pressing blocks 20 are semicircular arches. The plurality of pairs of magnetic blocks 21 are respectively fixedly installed at the end portions of the plurality of pressing blocks 20. The magnetic blocks 21 on the upper and lower groups of pushing components are different in magnetic pole on the side close to each other. The inner diameter of the pressing block 20 is equal to the outer diameter of the standard copper pipe. The first motor 22 is fixedly installed on the side of the connecting frame 17. The first motor 22 is of double-head structure and the upper and lower output ends are all in meshing connection with the outer ends of the two pulleys 18 through gear sets, respectively. The gear sets make the two pulleys 18 on the upper and lower sides rotate synchronously and reversely.

[0045] In the rotating process, the pressing blocks 20 embedded in the upper and lower conveying belts 19 are clamped in sequence. The magnetic blocks 21 are attracted to each other, so that the two pressing blocks 20 form a circular pipe structure. The inner wall diameter of the circular pipe structure is equal to the outer diameter of the standard cylinder of the copper pipe. Under the rolling and clamping of the plurality of pulleys 18 and the magnetic force of the pressing blocks 20, the copper pipe is straightened.

[0046] The support component comprises a support frame 23, a support ring 24 and a plurality of connecting rods 25, the support frame 23 is vertically fixedly installed on the base 1, the support ring 24 is rotatably embedded in the support frame 23, the plurality of connecting rods 25 are all arranged in the support ring 24 and are fixedly connected with the inner wall of the support ring 24 and the outer side of the connecting frame 17 at two ends respectively, and the two groups of support components located at the outer ends are connected through a linkage mechanism, and the linkage mechanism enables the two support rings 24 located at the two ends to synchronously and reversely rotate.

[0047] The linkage mechanism comprises a second motor 29, a second gear 30 and two groups of transmission assemblies, the transmission assembly comprises a plurality of supports 31, a main shaft 32, a gear ring 33, a third gear 34 and a fourth gear 35, the plurality of supports 31 are all vertically fixedly installed on the base 1, the main shaft 32 is horizontally rotatably sleeved in the plurality of supports 31, the second motor 29 is vertically fixedly installed on the base 1 and located between the two main shafts 32, the second gear 30 is fixedly installed on the top of the output end of the second motor 29, the third gear 34 is fixedly installed on the end of the main shaft 32 close to the second motor 29 and is in meshing connection with the second gear 30, the gear ring 33 is fixedly sleeved on the support ring 24, and the fourth gear 35 is fixedly sleeved on the end of the main shaft 32 away from the second motor 29 and is in meshing connection with the gear ring 33.

[0048] When the copper pipe is straightened by using the device, the end of the copper pipe is sent into the input end of the right outer straightening assembly, the device is operated, the first motor 22 is started, the upper and lower two pulleys 18 connected with the first motor 22 are driven to synchronously and reversely rotate through the gear set, so that the upper and lower two conveying belts 19 synchronously and reversely rotate, and the copper pipe is output to the left side for straightening work.

[0049] With the operation of the upper and lower two conveying belts 19, a plurality of groups of corresponding pressing blocks 20 on the upper and lower two conveying belts 19 are close to each other and clamped, corresponding pairs of magnetic blocks 21 are attracted, a complete cylindrical pipe structure is formed, the copper pipe passes through the cylindrical pipe structure, external straightening work is realized, the inner diameter of the cylindrical passage formed is equal to the standard outer diameter of the copper pipe, and the outer side of the copper pipe is in surface contact, compared with line contact of a rolling wheel, straightening force can be more fully applied, the straightening efficiency of the copper pipe is higher, and the quality is better.

[0050] After the copper pipe penetrates through the two groups of outer straightening assemblies, external straightening work is realized, and then internal straightening work is performed on the copper pipe.

[0051] The second telescopic cylinder 9 is elongated, so that the sliding block 8 is located at the lower limit position, the support block 3 is coaxial with the center of the copper pipe, at this time, the first telescopic cylinder 6 is in the shortened state, that is, the three rollers 5 are close to the support block 3, the second motor 14 is started, the rack 16 is driven to move the cross rod 2 by the first gear 15, so that the support block 3 drives the three groups of rolling components to enter the inside of the copper pipe, then, the three first telescopic cylinders 6 are elongated to the upper limit position, so that the outer arc surface of the three rollers 5 is in contact with the inner wall of the copper pipe, at this time, the circle composed of the outermost arc of the three rollers 5 has a diameter equal to the inner diameter of the standard copper pipe.

[0052] After the three rollers 5 are in contact with the inner wall of the copper pipe, the two first motors 22 and the second motor 14 are operated, the conveying directions of the left and right outer straightening assemblies are opposite, so that the copper pipe remains stationary, at this time the three rollers 5 move inside the copper pipe and roll to reset the concave part of the copper pipe to the outside. After the rollers 5 pass through the entire straightening area, the first telescopic cylinder 6 is retracted, the first motor 13 is started, the worm 12 drives the worm gear 11 to deflect sixty degrees, so that the three rollers 5 are directed towards the inner wall area of the copper pipe that has not been rolled, and then the first telescopic cylinder 6 is extended for rolling treatment.

[0053] Under the operation of the inner straightening assembly, the copper pipe that has been straightened outside can be straightened inside, so that the inside and outside of the copper pipe are subjected to straightening force, ensuring the cylindricality of the copper pipe.

[0054] When straightening the copper pipe outside, the two outer straightening assemblies keep the copper pipe stationary, the second motor 29 is operated, the second gear 30 drives the two third gears 34 to rotate synchronously and reversely, so that the two main shafts 32 drive the two fourth gears 35 to rotate synchronously and reversely, the two fourth gears 35 make the two gear rings 33 rotate reversely at the same time, so that the two outer straightening assemblies on the outside are driven by the connecting rods 25 to rotate reversely synchronously, thereby performing circumferential straightening of the copper pipe, further ensuring the straightening quality of the copper pipe.

[0055] The pneumatic mechanism includes a gas pump device 36, a sealing block 37 and a gas bag 38. The gas pump device 36 is fixedly installed at the bottom side of the cross rod 2, the sealing block 37 is fixedly sleeved on the cross rod 2, and the gas bag 38 is fixedly sleeved on the sealing block 37. The output end of the gas pump device 36 is fixedly sleeved in the sealing block 37 and in communication with the inside of the gas bag 38. The sealing block 37 is fixedly installed with a pressure relief pipe 39 at the side, the outer end of the pressure relief pipe 39 is fixedly installed with an electromagnetic valve device 40, the inner end of the pressure relief pipe 39 is fixedly connected in communication with the inside of the gas bag 38, and the inside of the gas bag 38 is fixedly installed with a pressure sensor device 41.

[0056] After the completion of the inner straightening and outer straightening operations, the first telescopic cylinder 6 is shortened, so that the roller 5 is separated from the inner wall of the copper pipe, and then the second motor 14 and the two first motors 22 are operated at the same time, the copper pipe is kept stationary, the air pump device 36 is started, the air bag 38 is inflated, so that the air bag 38 is expanded and in contact with the inner wall of the copper pipe, and in the moving process of the cross rod 2, the air bag 38 can slide in the area inside the copper pipe that has been straightened, so as to detect the cylindricality of the inside of the copper pipe, and in the moving process, the pressure sensing device 41 detects the air pressure, if there is still a non-circular area inside the copper pipe, the air pressure value will change, so as to reflect that there is a defect in the inner wall of the copper pipe, which needs to be repaired again, if the air pressure value inside the air bag 38 does not change during the entire pushing process, it indicates that the internal cylindricality of the copper pipe meets the standard, and the straightening operation is successful, and the cylindricality of the outside of the copper pipe is guaranteed by the multiple pairs of magnetic attraction pressing blocks 20.

[0057] The cutting mechanism includes a guide rail 26, a power sliding table device 27 and a wire cutting device 28, the guide rail 26 is fixedly installed horizontally and longitudinally on the upper side of the base 1, the power sliding table device 27 is slidingly embedded on the upper side of the guide rail 26, and the wire cutting device 28 is fixedly installed vertically on the upper side of the power sliding table device 27.

[0058] After the detection is completed, if the cylindricality is qualified, the air bag 38 is moved to a position close to the cutting mechanism, the wire cutting device 28 and the power sliding table device 27 are started, so that the wire cutting device 28 is started under the driving of the power sliding table device 27, and the copper pipe is cut off, since the air bag 38 is in an expanded state, the inside of the copper pipe can be supported, so as to avoid deformation of the copper pipe due to unilateral stress during cutting, thereby guaranteeing the cylindricality of the copper pipe.

[0059] After the cutting is completed, the electromagnetic valve device 40 is conducted, the air bag 38 is contracted, the gas is discharged through the pressure relief pipe 39, the second motor 14 is reversely rotated, so that the cross rod 2 is separated from the inside of the copper pipe, then the second telescopic cylinder 9 is shortened, the two groups of outer straightening assemblies are operated, the copper pipe that has completed straightening and cutting is output through the middle part of the stand 7, and then the straightening and cutting work of the next section of copper pipe is carried out.

[0060] A copper pipe processing and straightening method:

[0061] S1: primary outer straightening, the copper pipe is sent into the outer straightening assembly, and outer straightening in surface contact is carried out;

[0062] S2: internal rolling straightening, the inner straightening assembly is operated, the inner wall of the copper pipe is reciprocatingly rolled and treated, so that the inner wall of the copper pipe is straightened;

[0063] S3: secondary outer straightening, the two groups of outer straightening assemblies are synchronously and reversely rotated, and outer straightening operation in the circumferential direction of the copper pipe is carried out;

[0064] S4: detecting the inside of the copper pipe, detecting the cylindricity of the inner wall of the copper pipe through air pressure test, the cylindricity of the outside is controlled by the outer straightening assembly, so as to ensure that the cylindricity of the copper pipe is in the standard state;

[0065] S5: cutting and separating, separating the pipe section after the straightening operation from the area to be straightened, completing the straightening and separating operation.

[0066] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A straightening device for copper tube processing, comprising: The base (1), the shaping mechanism and the cutting mechanism are both located on the upper side of the base (1); The feature is that the shaping mechanism includes two sets of external straightening components and internal straightening components. Both sets of external straightening components are horizontally arranged on the base (1). The internal straightening component is arranged at the output end of the left external straightening component, and the cutting mechanism is arranged at the input end of the right external straightening component. The internal straightening assembly includes a lifting component, a crossbar (2), a support block (3), a rotating component, and three sets of rolling components. The crossbar (2) is horizontally slidably sleeved in the rotating component. The rotating component is set in the lifting component. The support block (3) is fixedly installed on the right end of the crossbar (2). The three sets of rolling components are all set in the support block (3) and are evenly distributed in a ring. The rolling component includes a clamp (4), a roller (5), and a first telescopic cylinder (6). The clamp (4) is slidably sleeved in the support block (3). The roller (5) is rotated and sleeved on the outer end of the clamp (4). The first telescopic cylinder (6) is fixedly sleeved in the support block (3), and its output end is fixedly connected to the inner end of the clamp (4). The outer surface of the roller (5) is an arc surface, and the arc is the same as the inner circle of the copper tube. The central angle corresponding to the arc of the roller (5) is sixty degrees. The cutting mechanism is used to divide the copper tube, and the crossbar (2) is equipped with a pneumatic mechanism for detecting the copper tube; The external straightening assembly includes two connecting frames (17), two sets of pushing components, and two sets of supporting components. The pushing components include multiple pulleys (18), a conveyor belt (19), multiple pressure blocks (20), and multiple pairs of magnetic blocks (21). The two connecting frames (17) are connected by two sets of supporting components. The two sets of pushing components are symmetrically arranged in the two connecting frames (17). The multiple pulleys (18) are horizontally rotatably installed in the connecting frames (17). The conveyor belt (19) is horizontally rotatably embedded on the outside of the multiple pulleys (18). The multiple pressure blocks (20) are fixedly embedded in the conveyor belt. (19) On the outside, the pressure block (20) is semi-circular arched. Multiple pairs of magnetic blocks (21) are fixedly installed at the ends of multiple pressure blocks (20). The magnetic poles of the magnetic blocks (21) in the upper and lower push components are different on the side that are close to each other. The inner diameter of the pressure block (20) is the same as the outer diameter of the standard copper tube. The first motor (22) is fixedly installed on the side of the connecting frame (17). The first motor (22) is a double-head structure, and the upper and lower output ends are respectively connected to the outer ends of two pulleys (18) through gear sets. The gear sets make the two corresponding pulleys (18) rotate synchronously in opposite directions. The supporting components include a support frame (23), a support ring (24), and multiple connecting rods (25). The support frame (23) is vertically fixed on the base (1). The support ring (24) is rotatably embedded in the support frame (23). The multiple connecting rods (25) are all arranged in the support ring (24), and their two ends are fixedly connected to the inner wall of the support ring (24) and the outer side of the connecting frame (17), respectively. The two sets of supporting components located at the outer ends are connected by a linkage mechanism. The linkage mechanism enables the two support rings (24) located at the two ends to rotate synchronously in opposite directions. The linkage mechanism includes a second motor (29), a second gear (30), and two sets of transmission components. The transmission components include multiple brackets (31), a main shaft (32), a gear ring (33), a third gear (34), and a fourth gear (35). The multiple brackets (31) are vertically fixed on the base (1). The main shaft (32) is horizontally rotated and sleeved in the multiple brackets (31). The second motor (29) is vertically fixed on the base (1) and located between the two main shafts (32). The second gear (30) is fixedly installed on the top of the output end of the second motor (29). The third gear (34) is fixedly installed on the end of the main shaft (32) near the second motor (29) and meshes with the second gear (30). The gear ring (33) is fixedly sleeved on the support ring (24). The fourth gear (35) is fixedly sleeved on the end of the main shaft (32) away from the second motor (29) and meshes with the gear ring (33). The pneumatic mechanism includes an air pump (36), a sealing block (37), and an airbag (38). The air pump (36) is fixedly installed on the bottom side of the crossbar (2). The sealing block (37) is fixedly sleeved on the crossbar (2). The airbag (38) is fixedly sleeved on the sealing block (37). The output end of the air pump (36) is fixedly sleeved inside the sealing block (37) and communicates with the inside of the airbag (38). A pressure relief pipe (39) is fixedly installed on the side of the sealing block (37). A solenoid valve device (40) is fixedly installed on the outer end of the pressure relief pipe (39). The inner end of the pressure relief pipe (39) is fixedly connected to the inside of the airbag (38). A pressure sensing device (41) is fixedly installed inside the airbag (38).

2. The straightening device for copper tube processing according to claim 1, characterized in that: The lifting component includes a stand (7), a slider (8), and a second telescopic cylinder (9). The stand (7) is vertically fixed on the base (1). The slider (8) is vertically slidably embedded in the stand (7). The second telescopic cylinder (9) is vertically set, and its upper and lower ends are fixedly connected to the inner top wall of the stand (7) and the top of the slider (8), respectively. The rotating component is rotatably installed in the slider (8).

3. A straightening device for copper tube processing according to claim 2, characterized in that: The rotating component includes a rotating block (10), a worm gear (11), a worm (12), and a first motor (13). The rotating block (10) is rotatably fitted inside the support block (3). The worm gear (11) is fixedly fitted on the rotating block (10). The first motor (13) is fixedly installed inside the slider (8). The worm (12) is horizontally fixedly installed at the output end of the first motor (13) and meshes with the worm gear (11). The crossbar (2) is horizontally slidably fitted inside the rotating block (10). The rotating block (10) is provided with a push-pull component for driving the crossbar (2) to move.

4. A method for straightening copper tubes using the straightening device for copper tube processing as described in any one of claims 1-3, characterized in that: The method includes: S1: One-time external straightening, the copper tube is sent into the external straightening assembly for surface contact external straightening; S2: Internal rolling straightening. The internal straightening component operates to perform reciprocating rolling treatment on the inner wall of the copper tube, thereby straightening the inner wall of the copper tube. S3: Secondary external straightening, two sets of external straightening components rotate synchronously in opposite directions to perform circumferential external straightening of the copper tube; S4: The inside of the copper tube is inspected. The cylindricity of the inner wall of the copper tube is tested by air pressure test. The cylindricity of the outside is controlled by the external straightening component, so as to ensure that the cylindricity of the copper tube is in a standard state. S5: Cutting and separating, separating the pipe section that has been straightened from the area to be straightened, completing the straightening and splitting operation.

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