End trimming device for anti-corrosion layer of anti-corrosion thermal insulation pipe

Abstract

The invention belongs to the technical field of anti-corrosion thermal insulation pipe machining, and discloses an anti-corrosion thermal insulation pipe anti-corrosion layer end trimming device which comprises a pipeline conveying mechanism, a positioning mechanism, a cutting mechanism and a driving mechanism. According to the device, a motor drives a first gear ring to rotate through a gear, so that a cutting shell and a stripping shell are driven to rotate in the forward direction, and every time after the first gear makes contact with and is engaged with a gear ring section, a cutting knife in the cutting shell and a stripping head in the stripping shell are controlled to move in the direction of the center axis of the coating pipeline; meanwhile, the stripping head can be embedded into the cutting groove along with movement to push the cut-off part outwards, and after cutting is completed, the V-shaped conveying belt is controlled to move in the reverse direction, at the moment, the cut-off anti-corrosion layer can be separated from the coating pipeline under blocking of the stripping head, and the anti-corrosion layer is separated from the coating pipeline. When the method is used for cutting and trimming the anti-corrosion layer of the anti-corrosion thermal insulation pipe, the cut anti-corrosion layer can be conveniently collected.

Description

Technical Field

[0001] The invention belongs to the technical field of anti-corrosion and thermal insulation pipe processing, and in particular relates to a device for trimming the end of an anti-corrosion layer of an anti-corrosion and thermal insulation pipe. Background Art

[0002] Anti-corrosion and thermal insulation pipes are pipes used in many industries. The internal and external anti-corrosion layers increase the service life of steel pipes. They are used in underground pipelines, underwater pipelines, municipal engineering and other industries. When producing anti-corrosion and thermal insulation pipes, first grind the outer wall of the steel pipe clean, then wrap paper tape around the parts that need to be reserved at both ends of the steel pipe, then spray the primer and apply the anti-corrosion material to the steel pipe. After the application is completed, trim the anti-corrosion layer at both ends of the anti-corrosion and thermal insulation pipe, remove the paper tape and the anti-corrosion layer adhered to it, reserve the exposed part for subsequent docking, then clean the inner wall of the pipe and apply the internal anti-corrosion layer.

[0003] Existing pipe end trimming machines mostly use grinding wheels to trim the excess anti-corrosion layers at both ends. However, the anti-corrosion layers of the anti-corrosion and thermal insulation pipes used in current underground pipelines, underwater pipelines and municipal engineering projects mostly use petroleum asphalt paint and glass cloth. If the anti-corrosion layer is trimmed by the above-mentioned grinding wheel grinding method, it is necessary to wait for the petroleum asphalt paint to dry, and the petroleum asphalt paint will mature and solidify during the drying process. When grinding the dry asphalt paint, the vibration generated by the rotation of the grinding wheel will cause the asphalt paint to break, resulting in the anti-corrosion layer being damaged and unable to play an effective anti-corrosion effect. Therefore, it can only be trimmed when the asphalt paint is not completely dry. However, when a grinding device is used to grind it at this time, since the asphalt paint is not dry but in a wet and flowing state, the grinding device will not be able to effectively grind the end of the anti-corrosion layer of the anti-corrosion and thermal insulation pipe. At the same time, even if it can be polished, the flowing asphalt paint will be squeezed by the grinding device, resulting in uneven coating thickness, thereby affecting the actual service life of the anti-corrosion and thermal insulation pipe. Summary of the invention

[0004] The purpose of the present invention is to provide a device for trimming the end of the anti-corrosion layer of an anti-corrosion and thermal insulation pipe to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a device for trimming the end of the anti-corrosion layer of an anti-corrosion and thermal insulation pipe, comprising a pipeline conveying mechanism, which comprises a V-shaped conveyor belt and a conveying frame arranged in a straight line, a coated pipeline is placed on the pipeline conveying mechanism, and further comprises:

[0006] A positioning mechanism, the positioning mechanism comprising a positioning bracket located at one end of the conveying frame away from the V-shaped conveyor belt, the interior of the positioning bracket is fixedly connected with a fixing ring, the interior of the fixing ring is rotatably mounted with a conical shell facing the conveying frame, a plurality of centrally symmetrical through grooves are provided on the conical surface of the conical shell, a connecting block is fixedly connected with the interior of the conical shell, a plurality of centrally symmetrical second telescopic rods are fixedly connected with the side of the connecting block, a roller is rotatably mounted on the telescopic end of the second telescopic rod, and the telescopic end of the second telescopic rod passes through the through groove;

[0007] The cutting mechanism comprises a cutting bracket, the cutting bracket is located on a side of the positioning bracket facing the conveying bracket and is fixedly connected to the positioning bracket, a first gear ring is rotatably installed on the outer surface of the cutting bracket, a cutting shell is fixedly connected to the side of the first gear ring away from the positioning bracket, a cutting knife is slidably connected to the inside of the cutting shell, a vertical rack is fixedly connected to the side of the cutting knife, a first gearbox is fixedly connected to the side of the cutting shell, a first transmission gear is fixedly sleeved on the output end of the first gearbox, a first driving gear is rotatably installed on the inside of the cutting shell, the first driving gear is meshed with the vertical rack, a first gear is fixedly sleeved on the input end of the first gearbox, a mounting bracket is fixedly connected to the top of the outer periphery of the cutting bracket, a gear ring segment is fixedly connected to the top surface of the mounting bracket, and the first gear meshes with the gear ring segment when rotating with the first gear ring;

[0008] The driving mechanism comprises a motor and a second gear ring rotatably mounted on the fixed ring, and the driving mechanism drives the cutting mechanism to work.

[0009] Preferably, the fixing ring is provided with a plurality of holes on the side facing the coating pipe and is fixedly connected to a first telescopic rod, the telescopic end of the first telescopic rod is a first telescopic head with a spherical top, and a first spring is elastically connected between the bottom of the first telescopic head and the inner wall of the first telescopic rod.

[0010] Preferably, a rotating joint is further provided inside the positioning mechanism, an input port of the rotating joint is fixedly connected and communicated with the infusion port of the first telescopic rod through a pipeline, an output port of the rotating joint is fixedly connected with a connecting block, a second spring is provided inside the second telescopic rod to control the telescopic length of the telescopic end of the second telescopic rod, and the connecting block is communicated with the second telescopic rod.

[0011] Preferably, the cutting mechanism also includes a stripping shell fixedly connected to the side of the first gear ring, a stripping head is slidably connected to the inside of the stripping shell, a vertical rack is fixedly connected to the side of the stripping head, and a second gearbox is fixedly connected to the outer side of the stripping shell, an input end of which is fixedly sleeved with a first gear, and an output end of which is fixedly sleeved with a first transmission gear, and a first driving gear that meshes with the first transmission gear and the vertical rack is rotatably installed inside the stripping shell.

[0012] Preferably, the output shaft of the motor is fixedly sleeved with a driving gear, the driving gear is meshed with the second gear ring, the side of the positioning bracket is rotatably mounted with a second transmission gear, the top of the positioning bracket is rotatably mounted with a transmission shaft, the two ends of the transmission shaft are respectively fixedly connected with a third transmission gear and a second drive gear, the third transmission gear is meshed with the second transmission gear, and the second drive gear is meshed with the first gear ring.

[0013] Preferably, the first telescopic head is driven by the first spring to extend out of the first telescopic rod when not pushed inwards, and at this time, the telescopic end of the second telescopic rod is retracted, and the roller is located in the through groove.

[0014] Preferably, the cutting housing and the stripping housing have a magnetic force which locks the cutting knife and the stripping head when the vertical rack is not driven to move.

[0015] Preferably, the end of the stripping head facing the coated pipe is elastic, and the end of the stripping head facing the coated pipe is provided with an arc surface having the same radius as the steel pipe layer of the coated pipe.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. In the present invention, by setting the cutting mechanism and driving mechanism, as the motor is started, the motor drives the first gear ring to rotate through the gear, thereby driving the cutting shell and the stripping shell to rotate in the forward direction, and then as the cutting shell rotates around the center of the coating pipe, each time the first gear is in contact and meshing with the gear ring segment, it will control the cutting knife in the cutting shell and the stripping head in the stripping shell to move toward the central axis of the coating pipe, thereby deepening the cutting depth of the cutting knife, and at the same time, the stripping head will also be embedded in the cutting groove cut by the cutting knife as it moves and push the cut part outward according to the thickness of the stripping head, thereby preventing the asphalt coating and glass cloth layer from being cut from being re-cut. The new one is bonded under the viscosity of the asphalt coating, and as the cutting is completed, the V-shaped conveyor belt is controlled to work in reverse to make the coated pipe leave the trimming station. At this time, the anti-corrosion layer that has been cut off will be separated from the coated pipe under the obstruction of the stripping head. At this time, the cut anti-corrosion layer is in a ring shape, which is easier to collect. When using the above method to cut and trim the anti-corrosion layer of the anti-corrosion insulation pipe, not only is there no debris, but it is also convenient to collect the cut anti-corrosion layer, which helps to ensure the cleanliness of the processing site. At the same time, using a cutting knife to cut the asphalt coating and the glass cloth layer of the coated pipe also prevents the problem of uneven thickness of the anti-corrosion layer near the cutting part due to asphalt flow caused by extrusion.

[0018] 2. Secondly, in the present invention, through the positioning mechanism, when the coating pipe is not in contact with the first telescopic head, the first telescopic head is extended under the push of the first spring, thereby drawing the liquid in the second telescopic rod into the first telescopic rod. At this time, the telescopic end of the second telescopic rod retracts, so that the roller is located in the through groove, and as the coating pipe continues to be transported to the positioning mechanism by the V-shaped conveyor belt, the coating pipe contacts the first telescopic head and pushes it into the first telescopic rod. At this time, the liquid in the first telescopic rod enters the second telescopic rod through the rotating joint and the connecting block. At this time, the telescopic end of the second telescopic rod is extended, so that the roller contacts the inner wall of the coating pipe. At this time, under the joint action of multiple second telescopic rods, the axis of the coating pipe coincides with the axis of the positioning bracket and the cutting bracket and is centered, preventing the cutting depth from being different when the cutting knife cuts the anti-corrosion layer of the coating pipe, resulting in poor quality of the rear end face after cutting.

[0019] 3. Finally, in the present invention, as the coating pipe contacts the first telescopic head, the telescopic end of the second telescopic rod extends. At this time, if the coating pipe deviates on the V-shaped conveyor belt and the conveyor frame, resulting in the axis of the coating pipe not coinciding with the axis of the positioning bracket, the coating pipe will contact part of the rollers. At this time, under the action of the second telescopic rod, the coating pipe moves horizontally and rotates on the V-shaped conveyor belt and the conveyor frame, so that the axis of the coating pipe coincides with the axis of the positioning bracket. At this time, because the roller can only rotate in the feeding and discharging direction of the coating pipe, the rotation of the coating pipe will drive the conical shell to rotate together. At this time, the roller that was in contact before is still in contact with the inner wall of the coating pipe, so that the coating pipe can quickly stop moving horizontally after the axis coincides with the axis of the positioning bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the positioning mechanism, cutting mechanism and driving mechanism of the present invention;

[0022] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 It is a cross-sectional view of the positioning mechanism of the present invention;

[0024] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle;

[0025] Figure 6 For the present invention Figure 4 Enlarged view of point C in the middle;

[0026] Figure 7 It is a schematic diagram of the cutting mechanism structure of the present invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged view of point D in the middle;

[0028] Fig. 9 It is a cross-sectional view of the stripping device of the present invention.

[0029] In the figure: 1, pipeline conveying mechanism; 11, V-shaped conveyor belt; 12, conveying frame; 2, coating pipeline; 3, positioning mechanism; 31, positioning bracket; 32, fixing ring; 33, conical shell; 34, through groove; 35, first telescopic rod; 36, first telescopic head; 37, first spring; 38, connecting block; 39, second telescopic rod; 310, roller; 311, second spring; 312, rotary joint; 4, cutting mechanism; 41, cutting bracket; 42, first gear ring; 43, cutting Cutting shell; 44, first gearbox; 45, first gear; 46, mounting frame; 47, gear ring segment; 48, vertical rack; 49, first transmission gear; 410, first drive gear; 411, cutting knife; 412, stripping shell; 413, stripping head; 414, second gearbox; 5, driving mechanism; 51, motor; 52, driving gear; 53, second gear ring; 54, second transmission gear; 55, transmission shaft; 56, third transmission gear; 57, second drive gear. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 9 As shown, an embodiment of the present invention provides an anti-corrosion and thermal insulation pipe anti-corrosion layer end trimming device, comprising a pipeline conveying mechanism 1, which includes a V-shaped conveyor belt 11 and a conveyor frame 12 arranged in a straight line, a coated pipeline 2 is placed on the pipeline conveying mechanism 1, and also includes:

[0032] The positioning mechanism 3 includes a positioning bracket 31 located at one end of the conveying frame 12 away from the V-shaped conveyor belt 11, a fixing ring 32 is fixedly connected inside the positioning bracket 31, a conical shell 33 facing the conveying frame 12 is rotatably installed inside the fixing ring 32, a plurality of centrosymmetrical through grooves 34 are opened on the conical surface of the conical shell 33, a connecting block 38 is fixedly connected inside the conical shell 33, a plurality of centrosymmetrical second telescopic rods 39 are fixedly connected to the side of the connecting block 38, a roller 310 is rotatably installed at the telescopic end of the second telescopic rod 39, and the telescopic end of the second telescopic rod 39 passes through the through groove 34;

[0033] The cutting mechanism 4 comprises a cutting bracket 41, which is located on the side of the positioning bracket 31 facing the conveying bracket 12 and is fixedly connected to the positioning bracket 31. A first gear ring 42 is rotatably installed on the outer surface of the cutting bracket 41. A cutting shell 43 is fixedly connected to the side of the first gear ring 42 away from the positioning bracket 31. A cutting knife 411 is slidably connected inside the cutting shell 43. A vertical rack 48 is fixedly connected to the side of the cutting knife 411. A first gearbox 44 is fixedly connected to the side of the cutting shell 43. A first transmission gear 49 is fixedly sleeved on the output end of the first gearbox 44. A first driving gear 410 is rotatably installed inside the cutting shell 43. The first driving gear 410 meshes with the vertical rack 48. A first gear 45 is fixedly sleeved on the input end of the first gearbox 44. A mounting frame 46 is fixedly connected to the top of the outer periphery of the cutting bracket 41. A gear ring segment 47 is fixedly connected to the top surface of the mounting frame 46. The first gear 45 meshes with the gear ring segment 47 when rotating with the first gear ring 42.

[0034] The driving mechanism 5 includes a motor 51 and a second gear ring 53 rotatably mounted on the fixing ring 32 . The driving mechanism 5 drives the cutting mechanism 4 to work.

[0035] In the present invention, by setting the cutting mechanism 4 and the driving mechanism 5, as the motor 51 is started, the motor 51 drives the first gear ring 42 to rotate through the gear, thereby driving the cutting shell 43 and the stripping shell 412 to rotate in the positive direction, and then as the cutting shell 43 rotates around the center of the coating pipe 2, each time the first gear 45 contacts and meshes with the gear ring segment 47, it will control the cutting knife 411 in the cutting shell 43 and the stripping head 413 in the stripping shell 412 to move toward the central axis direction of the coating pipe 2, thereby deepening the cutting depth of the cutting knife 411, and at the same time, the stripping head 413 will also be embedded in the cutting groove cut by the cutting knife 411 as it moves and push the cut portion outward according to the thickness of the stripping head 413, thereby preventing The asphalt coating and glass cloth layer that have been cut are prevented from re-bonding under the viscosity of the asphalt coating. After the cutting is completed, the V-shaped conveyor belt 11 is controlled to work in the opposite direction to make the coated pipe 2 leave the trimming station. At this time, the anti-corrosion layer that has been cut off will be separated from the coated pipe 2 under the obstruction of the stripping head 413. At this time, the cut anti-corrosion layer is in a ring shape, which is easier to collect. When the above method is used to cut and trim the anti-corrosion layer of the anti-corrosion insulation pipe, not only is there no debris, but it is also convenient to collect the cut anti-corrosion layer, which helps to ensure the cleanliness of the processing site. At the same time, the cutting knife 411 is used to cut the asphalt coating and the glass cloth layer of the coated pipe 2, which also prevents the problem of uneven thickness of the anti-corrosion layer near the cutting part caused by extrusion causing asphalt flow.

[0036] Secondly, in the present invention, through the positioning mechanism 3, when the coating pipe 2 is not in contact with the first telescopic head 36, the first telescopic head 36 is extended under the push of the first spring 37, thereby drawing the liquid in the second telescopic rod 39 into the first telescopic rod 35. At this time, the telescopic end of the second telescopic rod 39 retracts, so that the roller 310 is located in the through groove 34. As the coating pipe 2 continues to be transported to the positioning mechanism 3 by the V-shaped conveyor belt 11, the coating pipe 2 contacts the first telescopic head 36 and pushes it into the first telescopic rod 35. At this time, the liquid in the first telescopic rod 35 enters the second telescopic rod 39 through the rotating joint 312 and the connecting block 38. At this time, the telescopic end of the second telescopic rod 39 is extended, so that the roller 310 contacts the inner wall of the coating pipe 2. At this time, under the joint action of multiple second telescopic rods 39, the axis of the coating pipe 2 coincides with the axis of the positioning bracket 31 and the cutting bracket 41 and is centered, preventing the cutting depth from being different when the cutting knife 411 cuts the anti-corrosion layer of the coating pipe 2, resulting in poor quality of the rear end face after cutting.

[0037] Finally, in the present invention, as the coating pipe 2 contacts the first telescopic head 36, the telescopic end of the second telescopic rod 39 extends out. At this time, if the coating pipe 2 deviates on the V-shaped conveyor belt 11 and the conveyor frame 12, causing the axis of the coating pipe 2 to not coincide with the axis of the positioning bracket 31, the coating pipe 2 will contact part of the roller 310. At this time, under the action of the second telescopic rod 39, the coating pipe 2 moves horizontally and rotates on the V-shaped conveyor belt 11 and the conveyor frame 12, so that the axis of the coating pipe 2 coincides with the axis of the positioning bracket 31. At this time, because the roller 310 can only rotate in the feeding and discharging direction of the coating pipe 2, the rotation of the coating pipe 2 will drive the conical shell 33 to rotate together. At this time, the roller 310 that was in contact before is still in contact with the inner wall of the coating pipe 2, so that the coating pipe 2 can quickly stop moving horizontally after the axis coincides with the axis of the positioning bracket 31.

[0038] Among them, the fixing ring 32 is provided with multiple holes on the side facing the coating pipe 2 and is fixedly connected to the first telescopic rod 35. The telescopic end of the first telescopic rod 35 is a first telescopic head 36 with a spherical top. A first spring 37 is elastically connected between the bottom of the first telescopic head 36 and the inner wall of the first telescopic rod 35. A rotating joint 312 is also provided inside the positioning mechanism 3. The input port of the rotating joint 312 is fixedly connected and communicated with the infusion port of the first telescopic rod 35 through a pipeline, and the output port of the rotating joint 312 is fixedly connected to the connecting block 38. A second spring 311 is provided inside the second telescopic rod 39 to control the telescopic length of the telescopic end of the second telescopic rod 39. The connecting block 38 is communicated with the second telescopic rod 39.

[0039] The function of the first spring 37 is to control the extension of the first telescopic head 36, thereby extracting the liquid in the second telescopic rod 39 through pressure, causing the telescopic end of the second telescopic rod 39 to retract, and then causing the roller 310 to enter the through groove 34, to prevent the side of the coating pipe 2 from directly contacting the telescopic end of the second telescopic rod 39 in the initial positioning stage, causing the coating pipe 2 to be stuck and unable to be positioned.

[0040] Among them, the cutting mechanism 4 also includes a stripping shell 412 fixedly connected to the side of the first gear ring 42, the stripping shell 412 is internally slidably connected with a stripping head 413, the side of the stripping head 413 is fixedly connected with a vertical rack 48, the outer side of the stripping shell 412 is fixedly connected with a second gearbox 414, the input end of which is fixedly sleeved with a first gear 45, and the output end of which is fixedly sleeved with a first transmission gear 49, and the interior of the stripping shell 412 is rotatably installed with a first driving gear 410 that meshes with the first transmission gear 49 and the vertical rack 48.

[0041] After the cutting knife 411 cuts the anti-corrosion layer of the coated pipe 2, as the first toothed ring 42 rotates, the stripping head 413 is driven by the vertical rack 48 to move and embed into the cutting seam. As the first toothed ring 42 continues to rotate, the cutting depth of the cutting knife 411 increases, and the protruding length of the stripping head 413 also increases. After the stripping head 413 extends into the cutting seam, the thickness of the stripping head 413 will push the cut part outward, thereby preventing the cut part from re-bonding to the retained part and affecting the cutting effect of the cutting knife 411.

[0042] Among them, the output shaft of the motor 51 is fixedly sleeved with a driving gear 52, the driving gear 52 is meshed with the second gear ring 53, the side of the positioning bracket 31 is rotatably mounted with a second transmission gear 54, the top of the positioning bracket 31 is rotatably mounted with a transmission shaft 55, and the two ends of the transmission shaft 55 are respectively fixedly connected with a third transmission gear 56 and a second drive gear 57, the third transmission gear 56 is meshed with the second transmission gear 54, and the second drive gear 57 is meshed with the first gear ring 42.

[0043] When the first telescopic head 36 is not pushed inward, it is driven by the first spring 37 to extend out of the first telescopic rod 35 . At this time, the telescopic end of the second telescopic rod 39 is retracted, and the roller 310 is located in the through slot 34 .

[0044] Among them, the cutting shell 43 and the stripping shell 412 have magnetic force, which locks the cutting knife 411 and the stripping head 413 when the vertical rack 48 is not driven to move. The stripping head 413 is elastic at one end facing the coated pipe 2, and the stripping head 413 is provided with an arc surface with the same radius as the steel pipe layer of the coated pipe 2 at one end facing the coated pipe 2.

[0045] When the cutting knife 411 and the stripping head 413 are not driven by the vertical rack 48 to move up and down, the magnetic force of the cutting shell 43 and the stripping shell 412 will fix the cutting knife 411 and the stripping head 413 and prevent them from moving up and down, thereby preventing the cutting knife 411 from being pushed upward after contacting the anti-corrosion layer when cutting the anti-corrosion layer of the coated pipe 2, resulting in the inability to effectively cut the anti-corrosion layer.

[0046] Working principle:

[0047] When trimming and cutting the end of the anti-corrosion layer of the anti-corrosion insulation pipe, first use the pipeline conveying mechanism 1 to convey the coated pipe 2. When one end of the coated pipe 2 contacts the first telescopic head 36 of the positioning mechanism 3, as the coated pipe 2 continues to move, the coated pipe 2 pushes the first telescopic head 36 into the first telescopic rod 35. At this time, as the first telescopic head 36 enters the first telescopic rod 35, the liquid is pushed into the second telescopic rod 39, and the telescopic end of the second telescopic rod 39 extends, so that the roller 310 contacts the inner wall of the coated pipe 2. As the multiple second telescopic rods 39 are all extended, the coated pipe 2 is positioned from the inside so that its axis coincides with the axis of the positioning mechanism 3, so that the axis of the coated pipe 2 coincides with the axis of the cutting mechanism 4.

[0048] Then, the motor 51 is started, and the second driving gear 57 drives the first gear ring 42 to rotate through the transmission of multiple gears and the transmission shaft 55, thereby driving the cutting shell 43 and the cutting knife 411 to rotate. At this time, the cutting knife 411 cuts the anti-corrosion layer of the coated pipe 2 during rotation, and during the rotation of the cutting shell 43, the first gear 45 on the input shaft of the first gearbox 44 on its side is meshed with the gear ring segment 47, so that the first transmission gear 49 drives the first driving gear 410 to rotate through the transmission of the first gearbox 44, and then drives the vertical rack 48 to move. At this time, the cutting knife 411 moves toward the axial direction of the coated pipe 2, thereby increasing the cutting depth of the cutting knife 411. At the same time, the stripping head 413 also moves toward the axial direction of the coated pipe 2. The stripping head 413 moves, thereby extending the stripping head 413 into the cutting seam. At this time, the thickness of the stripping head 413 will push the cut part of the anti-corrosion layer to the side to prevent it from re-bonding to the anti-corrosion layer that needs to be retained, thereby hindering the cutting of the cutting knife 411. When the cutting knife 411 cuts off the anti-corrosion layer as the first gear ring 42 rotates, the pipeline conveying mechanism 1 is controlled to work in the reverse direction to transport the cut coated pipeline 2 away from the cutting station. At the same time, the motor 51 is controlled to rotate in the reverse direction to prevent the cutting knife 411 from contacting the steel pipe layer of the coated pipeline 2. As the coated pipeline 2 moves, the cut anti-corrosion layer is blocked by the stripping head 413, thereby separating this part of the anti-corrosion layer from the coated pipeline 2. As the motor 51 continues to rotate in the reverse direction, the cutting knife 411 and the stripping head 413 are reset.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for trimming the end of an anti-corrosion layer of an anti-corrosion insulation pipe, comprising a pipeline conveying mechanism (1), which comprises a V-shaped conveyor belt (11) and a conveying frame (12) arranged in a straight line, a coated pipeline (2) is placed on the pipeline conveying mechanism (1), and is characterized in that: Also includes: A positioning mechanism (3), the positioning mechanism (3) comprising a positioning bracket (31) located at one end of the conveying frame (12) away from the V-shaped conveyor belt (11), the positioning bracket (31) being fixedly connected with a fixing ring (32) inside, a conical shell (33) rotatably mounted inside the fixing ring (32) facing the conveying frame (12), a conical surface of the conical shell (33) being provided with a plurality of centrally symmetrical through grooves (34), a connecting block (38) being fixedly connected inside the conical shell (33), a side surface of the connecting block (38) being fixedly connected with a plurality of centrally symmetrical second telescopic rods (39), a roller (310) being rotatably mounted on the telescopic end of the second telescopic rod (39), and the telescopic end of the second telescopic rod (39) passing through the through groove (34); The cutting mechanism (4) comprises a cutting bracket (41), the cutting bracket (41) is located on a side of the positioning bracket (31) facing the conveying bracket (12) and is fixedly connected to the positioning bracket (31), a first toothed ring (42) is rotatably mounted on the outer surface of the cutting bracket (41), a side of the first toothed ring (42) away from the positioning bracket (31) is fixedly connected to a cutting shell (43), a cutting knife (411) is slidably connected inside the cutting shell (43), a side of the cutting knife (411) is fixedly connected to a vertical rack (48), and a side of the cutting shell (43) is fixedly connected to a A first gearbox (44), wherein the output end of the first gearbox (44) is fixedly sleeved with a first transmission gear (49), a first driving gear (410) is rotatably mounted inside the cutting housing (43), the first driving gear (410) is meshed with a vertical rack (48), a first gear (45) is fixedly sleeved with the input end of the first gearbox (44), a mounting frame (46) is fixedly connected to the top of the outer periphery of the cutting bracket (41), a gear ring segment (47) is fixedly connected to the top surface of the mounting frame (46), and the first gear (45) is meshed with the gear ring segment (47) when rotating with the first gear ring (42); A driving mechanism (5), the driving mechanism (5) comprising a motor (51) and a second gear ring (53) rotatably mounted on a fixing ring (32), the driving mechanism (5) driving the cutting mechanism (4) to operate.

2. The device for trimming the end of the anti-corrosion layer of an anti-corrosion and thermal insulation pipe according to claim 1 is characterized in that: The fixing ring (32) is provided with a plurality of holes on the side facing the coating pipe (2) and is fixedly connected to a first telescopic rod (35); the telescopic end of the first telescopic rod (35) is a first telescopic head (36) with a spherical top; a first spring (37) is elastically connected between the bottom of the first telescopic head (36) and the inner wall of the first telescopic rod (35).

3. The device for trimming the end of the anti-corrosion layer of an anti-corrosion and thermal insulation pipe according to claim 2 is characterized in that: A rotating joint (312) is further provided inside the positioning mechanism (3); an input port of the rotating joint (312) is fixedly connected and communicated with an infusion port of the first telescopic rod (35) through a pipeline; an output port of the rotating joint (312) is fixedly connected with a connecting block (38); a second spring (311) is provided inside the second telescopic rod (39) to control the telescopic length of the telescopic end of the second telescopic rod (39); and the connecting block (38) is communicated with the second telescopic rod (39).

4. The device for trimming the end of the anti-corrosion layer of an anti-corrosion and thermal insulation pipe according to claim 3 is characterized in that: The cutting mechanism (4) further comprises a stripping shell (412) fixedly connected to the side of the first gear ring (42); a stripping head (413) is slidably connected to the inside of the stripping shell (412); a vertical rack (48) is fixedly connected to the side of the stripping head (413); a second gearbox (414) is fixedly connected to the outer side of the stripping shell (412); a first gear (45) is fixedly sleeved on the input end of the second gearbox (414); a first transmission gear (49) is fixedly sleeved on the output end of the second gearbox; a first driving gear (410) meshing with the first transmission gear (49) and the vertical rack (48) is rotatably installed inside the stripping shell (412).

5. The device for trimming the end of the anti-corrosion layer of an anti-corrosion and thermal insulation pipe according to claim 4 is characterized in that: The output shaft of the motor (51) is fixedly sleeved with a driving gear (52), and the driving gear (52) is meshed with a second gear ring (53). A second transmission gear (54) is rotatably mounted on the side of the positioning bracket (31), and a transmission shaft (55) is rotatably mounted on the top of the positioning bracket (31). Two ends of the transmission shaft (55) are respectively fixedly connected with a third transmission gear (56) and a second driving gear (57), and the third transmission gear (56) is meshed with the second transmission gear (54), and the second driving gear (57) is meshed with the first gear ring (42).

6. The device for trimming the end of the anti-corrosion layer of an anti-corrosion and thermal insulation pipe according to claim 5, characterized in that: When the first telescopic head (36) is not pushed inward, it is driven by the first spring (37) to extend the first telescopic rod (35), at which time the telescopic end of the second telescopic rod (39) is retracted and the roller (310) is located in the through slot (34).

7. The device for trimming the end of the anti-corrosion layer of an anti-corrosion and thermal insulation pipe according to claim 6, characterized in that: The cutting housing (43) and the stripping housing (412) have a magnetic force which locks the cutting knife (411) and the stripping head (413) when the vertical rack (48) is not driven to move.

8. The device for trimming the end of the anti-corrosion layer of an anti-corrosion and thermal insulation pipe according to claim 7, characterized in that: The end of the stripping head (413) facing the coated pipe (2) is elastic, and the end of the stripping head (413) facing the coated pipe (2) is provided with an arc surface having the same radius as the steel pipe layer of the coated pipe (2).

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