Metal pipe end double-end grinding equipment

Abstract

The invention relates to double-end grinding equipment for metal pipe ends. The pipe fitting polishing device comprises a polishing support, a supporting mechanism used for supporting a pipe fitting, a polishing mechanism used for polishing the end of the pipe fitting, and a first moving module installed on the polishing support and used for driving the polishing mechanism to ascend, descend and slide. The rotating mechanism is arranged on the first moving module and drives the polishing mechanism to rotate; the positioning mechanism is arranged on the polishing bracket and is used for positioning the end part of the pipe fitting; the polishing mechanism comprises a fixing support, two sets of polishing wheels arranged in parallel, a first driving assembly driving the polishing wheels to rotate and a second driving assembly driving the two polishing wheels to be close to or away from each other. The device has the effect of automatically polishing the inner wall, the outer wall and the groove of the pipe fitting at the same time.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pipe processing technology, in particular to a metal pipe end double-head polishing equipment. BACKGROUND

[0002] When the pipe fitting is processed, the end part 2-3cm needs to be polished to reserve a relatively safe position for welding. Specifically, the inner wall, outer wall and groove of the pipe fitting end part need to be polished, wherein the groove is a slope formed by polishing the pipe fitting end part. By polishing the pipe end part, the oxidation layer on the surface of the pipe end part can be removed, so that the pipe end part is smooth, which helps to improve the subsequent welding quality.

[0003] The traditional polishing method mainly relies on manual operation, which is low in efficiency and unstable in quality. With the development of automation technology, some automatic polishing equipment has appeared on the market, but these devices are usually single-function, cannot polish the inner wall, outer wall and groove of the pipe fitting at the same time, and have poor adaptability to different pipe diameters.

[0004] Therefore, it is necessary to improve the prior art to solve the problems of the prior art. SUMMARY

[0005] In order to realize automatic polishing of the inner wall, outer wall and groove of the pipe fitting at the same time, the present application provides a metal pipe end double-head polishing equipment.

[0006] The metal pipe end double-head polishing equipment provided by the present application adopts the following technical scheme: A metal pipe end double-head polishing equipment, comprising a polishing support, a supporting mechanism for supporting the pipe fitting, a polishing mechanism for polishing the end part of the pipe fitting, a first moving module installed on the polishing support and used for driving the polishing mechanism to lift and slide, a rotating mechanism arranged on the first moving module and used for driving the polishing mechanism to rotate, and a positioning mechanism arranged on the polishing support and used for positioning the position of the end part of the pipe fitting. The polishing mechanism comprises a fixed support, two groups of parallel arranged polishing wheels, a first driving assembly for driving the polishing wheels to rotate, and a second driving assembly for driving the two polishing wheels to approach or move away from each other.

[0007] By adopting the technical scheme, the polishing support, the supporting mechanism, the polishing mechanism, the first moving module, the rotating mechanism and the positioning mechanism are arranged, the polishing mechanism comprises two groups of polishing wheels arranged in parallel, a first driving assembly and a second driving assembly, the second driving assembly can drive the two polishing wheels to approach or move away from each other, and under the action of the second driving element, the two groups of polishing wheels can be attached to the inner wall and the outer wall of the pipe fitting and then clamp the pipe fitting, the first driving assembly can drive the polishing wheels to rotate, so that the pipe fitting is polished, and meanwhile, the rotating mechanism can drive the polishing mechanism to rotate, so that the groove at the end of the pipe fitting can be polished, thereby realizing automatic polishing of the inner wall, the outer wall and the groove at the end of the pipe fitting on one device, and the surface oxidation layer at the end of the pipe fitting can be effectively removed.

[0008] Optionally, the polishing wheel comprises a polishing shaft, a main wheel fixedly sleeved on the polishing shaft, and a secondary wheel connected to the end of the polishing shaft, and the diameter of the main wheel is greater than the diameter of the secondary wheel.

[0009] By adopting the technical scheme, the specific structure of the polishing wheel is disclosed, the polishing wheel comprises a polishing shaft, a main wheel fixedly sleeved on the polishing shaft, and a secondary wheel connected to the end of the polishing shaft, so that the main wheel and the secondary wheel can polish the pipe fitting with a large pipe diameter and the pipe fitting with a small pipe diameter respectively, thereby helping to improve the adaptability of the polishing wheel.

[0010] Optionally, the first driving assembly comprises a driving motor with an output end connected to one of the polishing shafts, a transmission gear arranged on the polishing shaft, and a synchronous belt for synchronously driving the two transmission gears.

[0011] By adopting the technical scheme, one polishing shaft is driven to rotate by the driving motor, and the two polishing shafts are synchronously driven by the synchronous belt and the transmission gear, so that the double polishing wheels are synchronously driven to polish the end of the pipe fitting, thereby helping to improve the polishing quality and stability.

[0012] Optionally, the second driving assembly comprises a first sliding plate which is arranged on one of the polishing shafts and which is slidably arranged on the fixed support, a driving cylinder fixedly connected to the first sliding plate, and a second sliding plate which is arranged on the other polishing shaft and which is slidably arranged on the fixed support, a piston rod of the driving cylinder is connected to the fixed support, the first sliding plate is provided with a first rack, the fixed support is provided with a first gear which is engaged with the first rack, and the second sliding plate is provided with a second rack which is engaged with the first gear and which is arranged in parallel with the first rack.

[0013] By adopting the technical scheme, the specific structure of the second driving assembly is disclosed, the second driving member comprises a first sliding plate sliding up and down on the fixed support, a driving cylinder fixedly connected to the first sliding plate, and a second sliding plate sliding up and down on the fixed support, and the two polishing shafts are arranged on the first sliding plate and the second sliding plate respectively. When the driving cylinder is started, since the piston rod of the driving cylinder is connected to the fixed support, the driving cylinder body is driven to slide up and down on the fixed support by the reaction force, and the second sliding plate is correspondingly driven to slide up and down by the transmission of the first rack, the first gear and the second rack, so that the two polishing wheels are close to or away from each other, and when the two polishing wheels are close to each other and adhere to the inner and outer walls of the pipeline, the inner and outer walls of the pipe fitting can be polished at the same time, and after polishing, the two polishing wheels are away from each other, which is convenient for subsequent machining of the pipe fitting, thereby improving the quality and efficiency of pipe fitting polishing.

[0014] Optionally, the first driving assembly further comprises a fastening gear, a first gear seat arranged for rotation of the fastening gear, a connecting rod connected to the first gear seat, a limiting piece arranged at an end of the connecting rod, and a first spring sleeved on the connecting rod; the synchronous belt further synchronously drives the two transmission gears and the fastening gear; the fixed support is provided with a fastening plate, and a connecting block for the connecting rod to pass through is arranged in the fastening plate; the two ends of the first spring are respectively connected to the connecting block and the limiting piece.

[0015] By adopting the above technical scheme, the fastening gear, the first gear seat, the connecting rod, the limiting piece and the first spring are used, and the two transmission gears and the fastening gear are synchronously driven by the synchronous belt, so that the synchronous belt can always be kept in a tensioned state, the stability of transmission is ensured, and then the stable rotation of the polishing wheel is ensured, which helps to improve the polishing stability and quality of the pipe fitting end.

[0016] Optionally, the rotating mechanism comprises a fixed frame, a third rack sliding up and down on the fixed frame, a third driving member driving the third rack to rise and fall, and a second gear meshing with the third rack and rotatably installed on the fixed frame. The output end of the third driving member is provided with a connecting piece for connecting the third rack, and a positioning piece is arranged on the connecting piece; the fixed frame is provided with a fixed sliding groove, and a positioning sliding block for abutting against the positioning piece and used for determining the rotation angle of the second gear is horizontally slidably installed in the fixed sliding groove.

[0017] By adopting the above technical scheme, the third driving member is used to drive the third rack to rise and fall, and the second gear meshing with the third rack is driven to rotate, so as to realize the rotation of the polishing mechanism, and at the same time, the rotation angle of the polishing mechanism can be determined by the cooperation of the positioning piece and the positioning sliding block, so that the bevel of the pipe fitting end can be polished more accurately, and the polishing precision and effect of the bevel are effectively improved.

[0018] Optionally, the polishing mechanism further comprises a floating assembly connected to the rotating mechanism, the floating assembly comprising a fixed plate fixedly connected to an output end of the rotating mechanism and used for sliding of the fixed support, a floating column arranged on the fixed support, and a second spring sleeved on the floating column; the fixed plate has a first limiting plate on a top portion, the first limiting plate being provided with a floating through hole through which the floating column passes, and the floating column is provided with a second limiting plate on a bottom portion, and the second spring is connected to the first limiting plate and the second limiting plate at two ends respectively.

[0019] By adopting the above technical scheme, the floating assembly connected to the floating mechanism is arranged, the fixed support can slide on the fixed plate of the floating assembly, and the floating column and the second spring are matched to enable the polishing mechanism to adapt to the uneven wall thickness of the pipe end or the surface unevenness caused by the residual welding slag of the pipe during polishing, thereby helping to improve the fitting degree and stability of polishing and improve the polishing quality.

[0020] Optionally, the positioning mechanism comprises a positioning assembly for abutting against the pipe end and a second movement module for driving movement of the positioning assembly, the positioning assembly comprising an abutting roller, a positioning seat for rotary installation of the abutting roller, a guide rod arranged on an end of the positioning seat away from the abutting roller, a third spring sleeved on the guide rod, a positioning rod for installation of the guide rod, a first sensor arranged on an end of the positioning rod close to the positioning seat, and a fourth driving piece for driving horizontal movement of the positioning rod; the positioning rod is provided with a guide through hole for horizontal sliding of the guide rod, and two ends of the third spring are connected to the positioning rod and the positioning seat respectively.

[0021] By adopting the above technical scheme, the positioning assembly can be driven by the second movement module to abut the abutting roller against the pipe end, so as to determine the position of the pipe end and improve the precision of polishing of the pipe by the polishing wheel, and the third spring is arranged to play a buffering role, thereby avoiding rigid contact of the abutting roller and the pipe, and when the first sensor detects that the pipe impacts the abutting roller, the second movement module can be controlled to stop, thereby helping to improve the positioning accuracy and stability.

[0022] Optionally, the supporting mechanism comprises a receiving assembly for receiving the pipe and a pressing assembly for pressing the pipe; the receiving assembly comprises two receiving rollers arranged in parallel, a fifth driving piece for driving simultaneous rotation of the two receiving rollers, and a sixth driving piece for driving the two receiving rollers to move closer to or farther away from each other.

[0023] By adopting the technical scheme, the supporting mechanism comprises a receiving assembly and a pressing assembly, the receiving assembly receives the pipe by two parallel receiving rollers, the fifth driving member drives the receiving rollers to rotate simultaneously to drive the pipe to rotate, thereby realizing overall polishing of the end of the pipe, and in addition, the sixth driving member can drive the two receiving rollers to move close to or away from each other to adapt to pipes of different diameters, which helps to improve the adaptability of the equipment.

[0024] Optionally, the pressing assembly comprises two parallel pressing rollers, a pressing seat for arranging the two pressing rollers to rotate, a seventh driving member for driving the pressing seat to move up and down, and a second sensor arranged on the pressing seat; the top of the pressing seat is provided with an arrangement cylinder, and a fourth spring is arranged in the arrangement cylinder; the output end of the seventh driving member is provided with an abutting column which moves up and down in the arrangement cylinder and abuts against the fourth spring.

[0025] By adopting the technical scheme, the specific structure of the pressing assembly is disclosed, the pressing assembly comprises two parallel pressing rollers, a pressing seat, a seventh driving member and a second sensor, the top of the pressing seat is provided with an arrangement cylinder, and a fourth spring is arranged in the arrangement cylinder, and the output end of the seventh driving member is provided with an abutting column which moves up and down in the arrangement cylinder and abuts against the fourth spring. The seventh driving member can drive the pressing seat to move up and down so that the pressing rollers can stably and tightly press the pipe, at the same time, the fourth spring in the arrangement cylinder cooperates with the abutting column to buffer the impact force when pressing, and the second sensor can timely control the seventh driving member to stop, thereby avoiding damage to the pipe and the equipment, and improving the stability and safety of pipe fixing.

[0026] In summary, the present application has at least one of the following beneficial technical effects: 1. A double-end polishing equipment for metal pipes, which is provided with a polishing support, a supporting mechanism, a polishing mechanism, a first moving module, a rotating mechanism and a positioning mechanism, wherein the polishing mechanism comprises a fixed support, two groups of parallel polishing wheels, a first driving assembly and a second driving assembly, thereby realizing automatic polishing of the inner wall, outer wall and groove of the pipe at the same time; 2. The positioning assembly and the second moving module are arranged in the positioning mechanism, the positioning assembly can drive the abutting roller to abut against the end of the pipe under the driving of the second moving module, thereby determining the position of the end of the pipe, which helps to improve the polishing precision of the subsequent polishing wheels on the pipe; 3. The receiving assembly and the pressing assembly are arranged in the supporting mechanism, the receiving assembly of the supporting mechanism can stably support and rotate the pipe, and the pressing assembly can press the pipe and improve the stability of the pipe, thereby helping the subsequent polishing of the pipe. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a cross-sectional view of the pipe in the embodiment of the present application.

[0028] Figure 2 FIG. 1 is a schematic view of a metal pipe end double-head polishing device according to an embodiment of the present application.

[0029] Figure 3 FIG. 2 is a sectional view of a receiving assembly according to an embodiment of the present application.

[0030] Figure 4 FIG. 3 is a schematic view of a pressing assembly according to an embodiment of the present application.

[0031] Figure 5 FIG. 4 is a sectional view along the arrow direction of line H-H in FIG. 3. Figure 4

[0032] Figure 6 FIG. 5 is a schematic view of a positioning assembly according to an embodiment of the present application.

[0033] Figure 7 FIG. 6 is a partial schematic view of a metal pipe end double-head polishing device according to an embodiment of the present application.

[0034] Figure 8 FIG. 7 is a sectional view of a rotating mechanism according to an embodiment of the present application.

[0035] Figure 9 FIG. 8 is a partial enlarged view of position A in FIG. 7. Figure 2

[0036] Figure 10 FIG. 9 is a sectional view of a first driving assembly according to an embodiment of the present application.

[0037] Figure 11 FIG. 10 is a sectional view of a second driving assembly according to an embodiment of the present application.

[0038] ​​Explanation of reference signs: 1, polishing support; 2, supporting mechanism; 21, receiving assembly; 211, receiving roller; 2111, turbine; 212, fifth driving member; 2121, worm; 213, sixth driving member; 214, transition piece; 2141, tapered roller bearing; 215, sliding seat; 22, pressing assembly; 221, pressing roller; 222, pressing seat; 2221, arrangement cylinder; 2222, fourth spring; 223, seventh driving member; 2231, abutting column; 224, second sensor; 3, polishing mechanism; 31, fixed support; 311, fastening plate; 3111, connecting block; 312, first gear; 32, polishing wheel; 321, polishing shaft; 322, main wheel; 323, secondary wheel; 33, first driving assembly; 331, driving motor; 332, transmission gear; 333, fastening gear; 334, synchronous belt; 335, first gear seat; 336, connecting rod; 337, limiting member; 338, first spring; 34, second driving assembly; 341, first sliding plate; 3411, first rack; 342, driving cylinder; 343, second sliding plate; 3431, second rack; 35, floating assembly; 351, fixed plate; 3511, first limiting plate; 3512, floating through hole; 352, floating column; 3521, second limiting plate; 353, second spring; 4, first moving module; 41, first linear module; 42, second linear module; 5, rotating mechanism; 51, fixed frame; 511, fixed sliding groove; 512, positioning sliding block; 52, third rack; 53, third driving member; 531, connecting member; 532, positioning member; 54, second gear; 6, positioning mechanism; 61, positioning assembly; 611, abutting roller; 612, positioning seat; 613, guide rod; 614, third spring; 615, positioning rod; 6151, guide through hole; 616, first sensor; 617, fourth driving member; 618, connecting plate; 62, second moving module. 7, inner wall; 8, outer wall; 9, bevel; DETAILED DESCRIPTION The following description will be made in conjunction with the accompanying drawings. Figures 1-11 The present application is further described in detail.

[0039] The embodiments of the present application disclose a metal pipe end double-head polishing equipment, which is used for polishing the end of a pipe. Referring to Figure 1 The end of the pipe comprises an inner wall 7, an outer wall 8 and a bevel 9. In the embodiments, the inner wall 7, the outer wall 8 and the bevel 9 of the pipe can be referred to Figure 1 and are not separately cited in the following.

[0040] Referring to Figure 2The metal pipe end double-head polishing device comprises a polishing support 1, a supporting mechanism 2 for supporting the pipe, a polishing mechanism 3 for polishing the pipe end, a first moving module 4 installed on the polishing support 1 and used for driving the polishing mechanism 3 to lift and slide, a rotating mechanism 5 arranged on the first moving module 4 and used for driving the polishing mechanism 3 to rotate, and a positioning mechanism 6 arranged on the polishing support 1 and used for positioning the pipe end position. The first moving module 4 comprises a first linear module 41 installed on the positioning mechanism 6 and a second linear module 42 horizontally and slidably installed on the first linear module 41, and the polishing mechanism 3 is installed on the second linear module 42 through the rotating mechanism 5, so that the second linear module 42 can drive the rotating mechanism 5 and the polishing mechanism 3 to lift simultaneously.

[0041] With reference to Figure 2 and Figure 3 The supporting mechanism 2 comprises a receiving assembly 21 for receiving the pipe and a pressing assembly 22 for pressing the pipe, wherein the receiving assembly 21 comprises two receiving rollers 211 arranged in parallel, a fifth driving member 212, a sixth driving member 213, a transition member 214 connected with the fifth driving member 212 and the sixth driving member 213, and a sliding seat 215 for horizontal sliding of the transition member 214. In the embodiment, the fifth driving member 212 is a motor, a worm 2121 is fixedly sleeved on the output shaft of the motor, the receiving roller 211 is provided with a turbine 2111 matched with the worm 2121, and the fifth driving member 212 can drive the two receiving rollers 211 to rotate in the same direction to drive the pipe to rotate through the meshing of the turbine 2111 and the worm 2121. The transition member 214 is provided with a tapered roller bearing 2141 sleeved on both ends of each worm 2121, and the sixth driving member 213 is a bidirectional hand screw in the embodiment, two normal and reverse nuts of the screw rod are connected with the transition members 214 of the two groups of receiving rollers 211 respectively, so that the two receiving rollers 211 can be driven to approach or move away from each other to adapt to pipes with different outer diameters.

[0042] With reference to Figure 4 and Figure 5 The pressing assembly 22 comprises two pressing rollers 221 arranged in parallel, a pressing seat 222 for rotating arrangement of the two pressing rollers 221, a seventh driving member 223 arranged on the polishing support 1, and a second sensor 224 arranged on the pressing seat 222, wherein the top of the pressing seat 222 is provided with an arrangement cylinder 2221, and a fourth spring 2222 is arranged in the arrangement cylinder 2221. The seventh driving member 223 is a pneumatic cylinder in the embodiment, the piston rod of the pneumatic cylinder is connected with an abutting column 2231 capable of lifting and sliding in the arrangement cylinder 2221, the fourth spring 2222 abuts the bottom end of the abutting column 2231, and the seventh driving member 223 can drive the pressing seat 222 to lift. The second sensor 224 has a sensing switch in the embodiment, and when the pressing roller 221 contacts the pipe, the second sensor 224 can control the seventh driving member 223 to stop in time to avoid damage to the pipe and the device.

[0043] Referring to Figure 2 and Figure 6 , the positioning mechanism 6 comprises a positioning assembly 61 for abutting the pipe end and a second moving module 62 arranged on the polishing support 1, wherein the positioning assembly 61 comprises an abutting roller 611, a positioning seat 612 for rotating installation of the abutting roller 611, a guide rod 613 arranged at an end of the positioning seat 612 away from the abutting roller 611, a third spring 614 sleeved on the guide rod 613, a positioning rod 615 for installation of the guide rod 613, a first sensor 616 arranged at an end of the positioning rod 615 close to the positioning seat 612, a fourth driving member 617, and a connecting plate 618 connecting the fourth driving member 617 and the first linear module 41. In the embodiment, the second moving module 62 is a motor linear module of the prior art, which can drive the first linear module 41 and the positioning assembly 61 to move horizontally at the same time. The positioning rod 615 is provided with a guide through hole 6151 for horizontal sliding of the guide rod 613, and the two ends of the third spring 614 are connected to the positioning rod 615 and the positioning seat 612 respectively. In the embodiment, the first sensor 616 is a piezoelectric induction switch of the prior art, which can control the second moving module 62 to stop when the first sensor 616 detects that the pipe contacts the abutting roller 611. In the embodiment, the fourth driving member 617 is an air cylinder. When the pipe completes end positioning, the fourth driving member 617 can drive the positioning rod 615 to move horizontally to make way for the polishing mechanism 3.

[0044] Referring to Figure 7 and Figure 8 , the rotating mechanism 5 comprises a fixed frame 51 sliding up and down in the second linear module 42, a third rack 52 sliding up and down in the fixed frame 51, a third driving member 53, and a second gear 54 engaged with the third rack 52 and rotatingly installed on the fixed frame 51. In the embodiment, the third driving member 53 is an air cylinder, which can drive the third rack 52 to ascend and descend. The piston rod end of the air cylinder is provided with a connecting piece 531 for connecting the third rack 52, and a positioning piece 532 is fixedly connected on the connecting piece 531.

[0045] A fixed sliding groove 511 is formed on the outer side of the fixed frame 51, and a positioning sliding block 512 for determining the rotation angle of the second gear 54 is horizontally slidingly installed in the fixed sliding groove 511. The positioning sliding block 512 is in a stepped shape and each step is marked with a corresponding angle. In the embodiment, the positioning sliding block 512 has three steps. The operator aligns the corresponding step of the positioning sliding block 512 with the positioning piece 532 according to the angle of the bevel to be polished. When the third driving member 53 drives the positioning piece 532 to abut against the positioning sliding block 512, the polishing mechanism 3 rotates by a corresponding angle, so that the polishing mechanism 3 can polish the bevel of the pipe.

[0046] Referring to Figure 7 and Figure 9The polishing mechanism 3 comprises a fixed support 31, two groups of polishing wheels 32 arranged in parallel, a first driving assembly 33 for driving the polishing wheels 32 to rotate, a second driving assembly 34 for driving the two polishing wheels 32 to approach or move away from each other, and a floating assembly 35 connected to the rotating mechanism 5. The polishing wheel 32 comprises a polishing shaft 321, a main wheel 322 fixedly sleeved on the polishing shaft 321, and a secondary wheel 323 connected to the end of the polishing shaft 321. The diameter of the main wheel 322 is larger than that of the secondary wheel 323. The main wheel 322 and the secondary wheel 323 can polish the pipe with large diameter and the pipe with small diameter, respectively.

[0047] With reference to Figure 10 The first driving assembly 33 comprises a driving motor 331 with an output end connected to one of the polishing shafts 321, a transmission gear 332 coaxially arranged on the polishing shaft 321, a fastening gear 333 located on one side of the two transmission gears 332, a synchronous belt 334 for synchronously driving the two transmission gears 332 and the fastening gear 333, a first gear seat 335 arranged for the fastening gear 333 to rotate, a connecting rod 336 connected to the first gear seat 335, a limiting piece 337 arranged at the end of the connecting rod 336, and a first spring 338 sleeved on the connecting rod 336. In this embodiment, the driving motor 331 is a belt driving motor, and the driven wheel of the belt driving motor is fixedly sleeved on one of the polishing shafts 321. The fixed support 31 is provided with a fastening plate 311, and the fastening plate 311 is provided with a connecting block 3111 through which the connecting rod 336 passes, so that the connecting rod 336 can slide towards the direction of approaching or moving away from the transmission gear 332. The two ends of the first spring 338 are connected to the connecting block 3111 and the limiting piece 337, respectively, so that the fastening gear 333 always has a tendency to move away from the transmission gear 332, thereby ensuring that the synchronous belt 334 is in full contact with the transmission gear 332 and the fastening gear 333, preventing slipping and ensuring the stability of transmission.

[0048] With reference to Figure 11The second driving assembly 34 comprises a first sliding plate 341 which is arranged to slide up and down in the fixed support 31 and is used to arrange one of the polishing shafts 321, a driving cylinder 342 which is fixedly connected to the first sliding plate 341, and a second sliding plate 343 which is arranged to slide up and down in the fixed support 31 and is used to arrange the other polishing shaft 321, wherein the piston rod of the driving cylinder 342 is connected to the fixed support 31, and the cylinder body is fixed to the first sliding plate 341. The first sliding plate 341 is fixedly provided with a first rack 3411, the fixed support 31 is provided with a first gear 312 which is engaged with the first rack 3411, the second sliding plate 343 is provided with a second rack 3431 which is engaged with the first gear 312 and is arranged in parallel with the first rack 3411, and the tooth surfaces of the first rack 3411 and the second rack 3431 are oppositely arranged. When the driving cylinder 342 is started, the first sliding plate 341 is driven to rise due to the reaction force on the cylinder body of the driving cylinder 342, so as to drive the first rack 3411 to rise, at this time, the second rack 3431 is driven to descend under the action of the first gear 312, so as to realize that the two polishing wheels 32 are away from each other. Similarly, when the piston rod of the driving cylinder 342 is reset, the two polishing wheels 32 can be close to each other so as to clamp the inner and outer walls of the pipe.

[0049] With reference to Figure 10 The floating assembly 35 comprises a fixed plate 351 which is fixedly connected to the output end of the rotating mechanism 5 and is used to slide the fixed support 31, a floating column 352 which is arranged in the fixed support 31, and a second spring 353 which is sleeved on the floating column 352. The top of the fixed plate 351 is provided with a first limiting plate 3511, and the first limiting plate 3511 is provided with a floating through hole 3512 which is used for the floating column 352 to pass through, and the bottom of the floating column 352 is provided with a second limiting plate 3521, and the two ends of the second spring 353 are connected to the first limiting plate 3511 and the second limiting plate 3521 respectively, so that the polishing mechanism 3 can float up and down during the polishing process, so that the polishing wheel 32 can adapt to the pipe with uneven wall thickness or uneven surface.

[0050] The implementation principle of the metal pipe end double-head polishing equipment according to the embodiment of the application is as follows: after the pipe is conveyed to the receiving assembly 21 of the supporting mechanism 2, the pressing roller 221 of the pressing assembly 22 is pressed downward and presses the pipe, then the second moving module 62 of the positioning mechanism 6 drives the positioning assembly 61 to move so that the abutting roller 611 abuts against the end of the pipe, thereby determining the position of the pipe end, then the fourth driving piece 617 of the positioning assembly 61 drives the positioning rod 615 to drive the abutting roller 611 to move horizontally to make way for the polishing mechanism 3. Then the first moving module 4 drives the polishing mechanism 3 to lift and slide so that the polishing wheel 32 reaches the processing position, the first driving assembly 33 of the polishing mechanism 3 drives the polishing wheel 32 to rotate, the second driving assembly 34 drives the two polishing wheels 32 to approach each other and clamp the inner and outer walls of the pipe respectively, and meanwhile the fifth driving piece 212 of the receiving assembly 21 drives the receiving roller 211 to rotate, thereby driving the pipe to rotate. In this way, the inner and outer walls of the pipe end are polished comprehensively, finally, after the inner and outer walls are polished, the polishing mechanism 3 is rotated through the rotating mechanism 5, thereby polishing the bevel of the pipe end, thereby realizing the automatic polishing of the inner wall, the outer wall and the bevel of the pipe on one equipment.

[0051] The above are the preferred embodiments of the application, and do not limit the protection scope of the application, therefore: any equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A double-head grinding device for metal pipe ends, characterized in that, It includes a grinding bracket (1), a support mechanism (2) for supporting the pipe fitting, a grinding mechanism (3) for grinding the end of the pipe fitting, a first moving module (4) installed on the grinding bracket (1) and used to drive the grinding mechanism (3) to rise and slide, a rotating mechanism (5) disposed on the first moving module (4) and used to drive the grinding mechanism (3) to rotate, and a positioning mechanism (6) disposed on the grinding bracket (1) and used to position the end of the pipe fitting. The polishing mechanism (3) includes a fixed bracket (31), two sets of parallel polishing wheels (32), a first drive assembly (33) for driving the polishing wheels (32) to rotate, and a second drive assembly (34) for driving the two polishing wheels (32) to move closer or further apart from each other.

2. The double-head grinding equipment for metal pipe ends according to claim 1, characterized in that, The grinding wheel (32) includes a grinding shaft (321), a main wheel (322) fixedly sleeved on the grinding shaft (321), and a secondary wheel (323) connected to the end of the grinding shaft (321). The diameter of the main wheel (322) is larger than the diameter of the secondary wheel (323).

3. The double-head grinding equipment for metal pipe ends according to claim 2, characterized in that, The first drive assembly (33) includes a drive motor (331) whose output end is connected to one of the grinding shafts (321), a transmission gear (332) disposed on the grinding shaft (321), and a synchronous belt (334) that synchronously drives the two transmission gears (332).

4. The double-head grinding equipment for metal pipe ends according to claim 3, characterized in that, The second drive assembly (34) includes a first sliding plate (341) that slides vertically and horizontally on the fixed bracket (31) and is arranged for one of the grinding shafts (321), a drive cylinder (342) fixedly connected to the first sliding plate (341), and a second sliding plate (343) that slides vertically and horizontally on the fixed bracket (31) and is arranged for the other grinding shaft (321); the piston rod of the drive cylinder (342) is connected to the fixed bracket (31); the first sliding plate (341) is provided with a first rack (3411), the fixed bracket (31) is provided with a first gear (312) meshing with the first rack (3411), and the second sliding plate (343) is provided with a second rack (3431) meshing with the first gear (312) and arranged parallel to the first rack (3411).

5. The double-head grinding equipment for metal pipe ends according to claim 4, characterized in that, The first drive assembly (33) further includes a fastening gear (333), a first gear seat (335) for the fastening gear (333) to rotate, a connecting rod (336) connected to the first gear seat (335), a limiting member (337) disposed at the end of the connecting rod (336), and a first spring (338) sleeved on the connecting rod (336); the synchronous belt (334) also synchronously drives the fastening gear (333) and the two transmission gears (332); the fixed bracket (31) is provided with a fastening plate (311) and a connecting block (3111) for the connecting rod (336) to pass through is provided in the fastening plate (311); the two ends of the first spring (338) are respectively connected to the connecting block (3111) and the limiting member (337).

6. The double-head grinding equipment for metal pipe ends according to claim 1, characterized in that, The rotating mechanism (5) includes a fixed frame (51), a third rack (52) that slides and moves up and down on the fixed frame (51), a third driving member (53) that drives the third rack (52) to move up and down, and a second gear (54) that meshes with the third rack (52) and is rotatably mounted on the fixed frame (51). The output end of the third drive unit (53) is provided with a connector (531) for connecting the third rack (52) and a positioning member (532) is provided on the connector (531). The fixed frame (51) is provided with a fixed slide groove (511) and a positioning slider (512) is horizontally slidably installed in the fixed slide groove (511) for the positioning member (532) to abut against and for determining the rotation angle of the second gear (54).

7. The double-head grinding equipment for metal pipe ends according to claim 1, characterized in that, The grinding mechanism (3) further includes a floating component (35) connected to the rotating mechanism (5). The floating component (35) includes a fixed plate (351) fixedly connected to the output end of the rotating mechanism (5) and used for sliding of the fixed bracket (31), a floating column (352) disposed on the fixed bracket (31), and a second spring (353) sleeved on the floating column (352). The top of the fixed plate (351) has a first limiting plate (3511), the first limiting plate (3511) has a floating through hole (3512) for the floating column (352) to pass through, the bottom of the floating column (352) has a second limiting plate (3521), and the two ends of the second spring (353) are respectively connected to the first limiting plate (3511) and the second limiting plate (3521).

8. The double-head grinding equipment for metal pipe ends according to claim 1, characterized in that, The positioning mechanism (6) includes a positioning component (61) for abutting the end of the fitting and a second moving module (62) for driving the positioning component (61) to move. The positioning component (61) includes an abutting roller (611), a positioning seat (612) for rotatably mounting the abutting roller (611), a guide rod (613) disposed at the end of the positioning seat (612) away from the abutting roller (611), a third spring (614) sleeved on the guide rod (613), and a third spring (614) for the guide rod (613) to move. The positioning rod (615) is mounted on the guide rod (613), a first sensor (616) is disposed at one end of the positioning rod (615) near the positioning seat (612), and a fourth driving member (617) drives the positioning rod (615) to move horizontally; the positioning rod (615) has a guide through hole (6151) for the guide rod (613) to slide horizontally, and the two ends of the third spring (614) are respectively connected to the positioning rod (615) and the positioning seat (612).

9. The double-head grinding equipment for metal pipe ends according to claim 1, characterized in that, The support mechanism (2) includes a receiving assembly (21) for receiving pipe fittings and a clamping assembly (22) for clamping pipe fittings; the receiving assembly (21) includes two parallel receiving rollers (211), a fifth driving member (212) for driving the two receiving rollers (211) to rotate simultaneously, and a sixth driving member (213) for driving the two receiving rollers (211) to move closer or further away from each other.

10. A double-head grinding device for metal pipe ends according to claim 9, characterized in that, The clamping assembly (22) includes two parallel clamping rollers (221), a clamping seat (222) for the two clamping rollers (221) to rotate, a seventh driving member (223) for driving the clamping seat (222) to rise and fall, and a second sensor (224) disposed on the clamping seat (222); the top of the clamping seat (222) is provided with an arrangement cylinder (2221) and a fourth spring (2222) is provided inside the arrangement cylinder (2221); the output end of the seventh driving member (223) has an abutment post (2231) that slides and rises and falls on the arrangement cylinder (2221), and the fourth spring (2222) abuts against the abutment post (2231).

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