A device and method for removing internal flash from a welded pipe and applications

Abstract

The present application relates to a kind of welding pipe inner burr extraction device and method, application.The device includes conveying roller, burr cut-off side pull mechanism, burr pushes out mechanism and burr collection tank.In which, burr cut-off side pull mechanism is gripped by its gripping assembly and is gripped from the inner burr initial end head exposed from the end of welding pipe, is cut off by cut-off component and is driven by side pull drive component and is slid laterally by slider, so as to use the inner burr initial end head being gripped and pull the whole inner burr away from the center line of welding pipe;Subsequently, burr pushes out mechanism pushes out inner burr from pipe opening, and finally is collected by burr collection tank.Corresponding method is based on the exposed state of burr end head after welding pipe is cut off by flying saw, and the above-mentioned device is automatically executed conveying, gripping, cut-off side pull, push out and collection step.The present application realizes the full automation of welding pipe inner burr removal, completely solves the technical problems of traditional manual operation, and has the advantages of simple structure, reliable operation.

Description

Technical Field

[0001] This invention belongs to the field of welded steel pipes, specifically relating to a device and method for removing burrs from inside welded pipes, and its application. Background Technology

[0002] In the production process of welded steel pipes (referred to as welded pipes), to eliminate the metal protrusions (i.e., internal burrs) formed on the inside of the weld due to welding extrusion, they are usually scraped off online using an internal burr scraper installed on the production line while the weld is still hot. After the scraped residual metal cools, it forms a long strip of metal wire continuously distributed along the weld direction on the inner wall of the welded pipe, which is the internal burr. If this internal burr is not removed, it will directly affect the surface finish, dimensional accuracy, and subsequent processing quality (such as coatings, plating, fluid transport efficiency, etc.) of the steel pipe.

[0003] Currently, after welded pipes are cut to length using a flying saw, removing the internal burrs left inside the pipe section mainly relies on manual labor. Workers typically use long hooks, pliers, and other tools to reach into the pipe end, hook the burr tip, and then pull it out manually. This method has the following significant drawbacks:

[0004] (1) High labor intensity and low efficiency: Manual pulling is laborious and slow, making it difficult to match the high-speed production rhythm of modern welded pipe production lines. (2) Prominent safety hazards: During operation, burrs may suddenly break or bounce, easily causing mechanical injuries such as scratches and punctures to workers. At the same time, working for a long time in a noisy industrial environment with many equipment also increases other safety risks. (3) Unstable operation quality: Relying on manual experience and physical strength, burrs may not be completely removed, broken off and left behind, or cause secondary damage to the pipe opening. (4) Deterioration of the production environment: The pulled-out burrs are often randomly discarded near the production line, accumulating messily, which not only affects on-site management, but their sharp edges also pose potential safety hazards and are not conducive to the centralized recycling of metal waste.

[0005] The aforementioned traditional manual operation mode has become one of the key bottlenecks restricting the improvement of production efficiency, safety assurance, and cost control. Therefore, the industry urgently needs to develop a device and method that can automatically, efficiently, and safely remove burrs from inside welded pipes to replace existing manual operations and achieve continuous and automated production processes. Summary of the Invention

[0006] The purpose of this application is to provide a device, method and application for removing burrs from inside welded pipes, in order to overcome the above-mentioned technical defects.

[0007] To solve the above-mentioned technical problems, this application provides a device for removing burrs from inside welded pipes, comprising:

[0008] Conveyor rollers are used to convey welded pipes with internal burrs along their axial direction.

[0009] A burr-cutting side-pulling mechanism is disposed beside the conveyor roller conveyor, and the burr-cutting side-pulling mechanism includes:

[0010] Side-pull base;

[0011] The slider is slidably mounted on the side pull base via a slide block;

[0012] A gripping component for gripping and holding the initial end of the internal burr protruding from the end of the welded pipe;

[0013] A cutting component, disposed on the slider, is used to cut off the starting end of the internal burr;

[0014] A side-pull drive assembly, connected to the slider, is used to drive the slider to slide laterally;

[0015] The burr cutting and side-pulling mechanism is configured to: grasp the starting end of the internal burr through the gripping component, cut and hold the starting end of the internal burr by the cutting component, and then drive the slider to slide laterally by the side-pulling drive component, thereby using the held starting end of the internal burr to pull the entire internal burr laterally away from the center line of the welded pipe.

[0016] A burr removal mechanism is used to remove the internal burrs from the opening of the welded pipe;

[0017] A burr collection groove is located downstream of the burr removal mechanism's removal path.

[0018] In one possible implementation, the burr removal device for welded pipe provided in this application has a side pull base having at least a first position and a second position, with the first position located upstream of the second position along the conveying direction of the welded pipe;

[0019] The slide is installed at the second position of the side pull base.

[0020] In one possible implementation, the burr removal device for welded pipes provided in this application includes a gripping assembly comprising:

[0021] An electromagnet, installed at the first position of the side pull base, is used to attract the starting end of the internal burr at the pipe end section of the welded pipe after the flying saw cutting process.

[0022] In one possible implementation, the burr removal device for welded pipes provided in this application includes a cutting assembly comprising:

[0023] The cylinder support is cut off and fixedly mounted on the slider;

[0024] A cutting cylinder, the cylinder body of which is fixedly mounted on the cutting cylinder support, is configured to drive the upper knife holder and the upper cutting blade to move up and down;

[0025] An upper blade holder and an upper cutting blade fixed thereon, the upper blade holder being connected to the piston rod of the cutting cylinder;

[0026] A lower blade holder and a lower cutting blade fixed thereon, wherein the lower blade holder is fixedly mounted on the slider;

[0027] The upper and lower blade holders are configured to have opposing surfaces that can jointly clamp the starting end of the internal burr; the upper and lower cutting edges are configured to have opposing cutting edges that can cooperate to cut the starting end of the internal burr.

[0028] In one possible implementation, the burr removal device for welded pipes provided in this application includes a side-pull drive assembly comprising:

[0029] A side-pull cylinder support is fixedly installed at the second position of the side-pull base;

[0030] A side-pull cylinder has its cylinder body fixedly mounted on a side-pull cylinder support, and its piston rod is driven to drive the slider to slide laterally.

[0031] In one possible implementation, the burr removal device for welded pipes provided in this application includes a burr removal mechanism comprising:

[0032] Two pull-out bases are spaced apart along the axial direction of the welded pipe;

[0033] A sprocket seat is correspondingly disposed on each of the aforementioned pull-out bases;

[0034] The driving sprocket and the driven sprocket are respectively rotatably mounted on the two sprocket seats;

[0035] A sprocket motor is connected to the drive sprocket.

[0036] A chain is wound around the driving sprocket and the driven sprocket;

[0037] A feed bar is disposed on the chain;

[0038] The material-pushing bar is configured such that, when it rotates to its highest point with the chain, its position is above the centerline of the welded pipe, so as to push the laterally pulled-out inner burrs toward the burr collection groove.

[0039] In one possible implementation, the burr removal device for welded pipes provided in this application includes a burr collection groove comprising:

[0040] Collection tank base;

[0041] A material trough is positioned above the base of the collection trough;

[0042] The material trough near the conveyor roller has a guide slope that is inclined downward relative to the horizontal plane. The guide slope is configured to receive the internal burrs pulled out from the welded pipe opening and guide them to slide into the bottom of the material trough for collection.

[0043] In one possible implementation, the burr removal device for welded pipes provided in this application includes a conveying roller conveyor comprising:

[0044] Multiple roller conveyor bases are arranged at intervals along the conveying direction of the welded pipe;

[0045] Multiple roller seats are fixed one-to-one on the roller conveyor base;

[0046] Rollers, each of which is rotatably supported on the roller seat;

[0047] A roller conveyor motor is driven and connected to at least one of the rollers;

[0048] The continuous conveying section is formed by multiple roller bases and rollers thereon, with the top of the rollers forming a rolling contact surface for supporting and conveying the welded pipe.

[0049] This application provides a method for removing burrs from inside welded pipes, using the aforementioned burr removal device. The method is based on the welded pipe being cut to length using a flying saw in a production line, with the initial end of the burr protruding from the pipe end. The method includes the following steps:

[0050] A welded pipe with internal burrs is conveyed axially through the conveyor rollers.

[0051] When the end of the welded pipe moves to the vicinity of the gripping assembly of the burr cutting side pulling mechanism, the gripping assembly grips and holds the starting end of the internal burr that is exposed from the end of the welded pipe.

[0052] The cutting component cuts off and holds the starting end of the internal burr, while the side pull drive component drives the slider to slide laterally, thereby using the held starting end of the internal burr to pull the entire internal burr laterally away from the centerline of the welded pipe.

[0053] The burr removal mechanism removes the internal burrs from the opening of the welded pipe.

[0054] The removed internal burrs are guided to the burr collection groove for collection.

[0055] This application also provides an application of the welded pipe internal burr removal device as described above in a welded pipe production line. The device is positioned after the flying saw length-cutting process to automatically remove the internal burrs remaining on the inner wall of the welded pipe after cutting by the flying saw. Its application includes:

[0056] The welded pipe, which has been cut by a flying saw and has the starting end of the internal burrs exposed at the pipe end, is placed into the conveyor roller.

[0057] The burr removal device inside the welded pipe is activated, and the burrs are gripped, cut off and pulled out and collected in sequence to complete the automatic removal of the internal burrs.

[0058] The welded pipe, after the internal burrs are removed, is transported to the subsequent processing station.

[0059] The beneficial effects of this invention are as follows:

[0060] (1) Through the coordinated automatic operation of the conveyor rollers, the burr cutting side pulling mechanism, the burr pulling mechanism, and the burr collection trough, the traditional manual operation using tools such as hooks and pliers is completely replaced. This eliminates the safety hazards such as burr breakage and splashing, and tool scratches that occur when manually pulling out burrs, thus achieving inherent safety. At the same time, the device can operate continuously and at high speed, and its operating efficiency is far higher than that of manual labor. It can be matched with modern welded pipe production lines, thereby improving overall production efficiency.

[0061] (2) The device uses an electromagnet to position and attract the starting end of the internal burr, and uses a cutting component for reliable clamping and shearing, ensuring a precise and secure starting point for the operation. Subsequently, the internal burr is pulled out of the weld groove by a lateral pulling action, and then completely removed by the burr removal mechanism. This streamlined and mechanized operation ensures that the internal burrs of each welded pipe can be removed stably and thoroughly, avoiding problems such as omissions, broken residues, or damage to the pipe opening that may occur during manual operation, thus improving the uniformity and stability of the product's internal surface quality.

[0062] (3) Through the burr collection trough, especially the trough with inclined guide surface, the hot, sharp, long strip-shaped internal burrs that are pulled out can be automatically guided and collected in a concentrated manner, and will not be scattered around the production line. This solves the problems of messy site, safety hazards and subsequent cleaning trouble caused by random burr accumulation in traditional operations, making the production site cleaner and more standardized, facilitating the centralized recycling and treatment of metal waste, and meeting the requirements of modern clean production.

[0063] To make the above description of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0064] Figure 1 This is the front view of the burr removal device inside the welded pipe.

[0065] Figure 2 This is a top view of the device for removing burrs from inside welded pipes.

[0066] Figure 3 yes Figure 1 Sectional view along direction AA.

[0067] Figure 4 yes Figure 1 BB-direction sectional view.

[0068] Figure 5 yes Figure 1 A magnified view of the area at point Z.

[0069] Explanation of reference numerals in the attached figures:

[0070] 1. Conveyor roller conveyor; 11. Roller conveyor base; 12. Roller conveyor motor; 13. Roller seat; 14. Roller;

[0071] 2. Burr-cutting side-pull mechanism; 201. Electromagnet; 202. Side-pull base; 203. Side-pull cylinder; 204. Side-pull cylinder support; 205. Slide; 206. Cutting cylinder support; 207. Cutting cylinder; 208. Slider; 209. Lower blade holder; 210. Lower cutter; 211. Upper cutter; 212. Upper blade holder;

[0072] 3. Burr removal mechanism; 31. Sprocket seat; 32. Driven sprocket; 33. Removal base; 34. Feeding bar; 35. Chain; 36. Drive sprocket; 37. Sprocket motor;

[0073] 4. Burr collection trough; 41. Collection trough base; 42. Material trough;

[0074] 5. Welded pipes;

[0075] 6. Internal burrs; 61. Starting point of internal burrs. Detailed Implementation

[0076] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0077] In the description of this invention, it should be understood that the terms "axial," "lateral," etc., indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. "Axial" refers to the direction parallel to the centerline of the welded pipe, that is, the conveying direction of the conveyor rollers; "lateral" refers to the horizontal direction perpendicular to the axial direction.

[0078] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the drawings is not intended to limit the invention. In the drawings, the same units / elements are referred to by the same reference numerals.

[0079] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.

[0080] This embodiment relates to a device for removing burrs from inside welded pipes. Please refer to [link to relevant documentation]. Figure 1 It includes the following components:

[0081] The conveyor roller 1 is used to convey welded pipes 5 with internal burrs 6 along its axial direction, specifically to provide stable and continuous axial movement power for the entire welded pipe 5. Its function is to use the rotation of the roller 14 to carry and drive the welded pipe 5 along its axial direction, thereby sending the welded pipes 5 that need to be processed into subsequent functional stations in sequence, which is the basis for realizing automated assembly line operation.

[0082] In one possible implementation, please refer to [reference needed]. Figure 1 , Figure 2 and Figure 4 The conveyor roller 1 includes a roller base 11, a roller motor 12, a roller seat 13, and rollers 14.

[0083] Multiple roller conveyor bases 11 are spaced apart along the conveying direction of the welded pipe 5. Their function is to serve as modular foundation support units for the entire conveyor roller conveyor 1. This spaced arrangement allows for flexible splicing and expansion of the conveyor line according to the actual layout length and load-bearing requirements of the production line, enhancing the equipment's versatility and configurability. The result is a stable, continuous, and customizable mounting base.

[0084] Multiple roller seats 13 are fixed one-to-one with each roller conveyor base 11. Their function is to provide precise, paired mounting points for the rollers 14 on each individual roller conveyor base 11. Their purpose is to ensure reliable support at both ends of each roller 14 and to maintain the axes of all rollers 14 parallel to each other and perpendicular to the conveying direction. This provides the necessary structural precision and mechanical strength for the high-speed, smooth rotation of the rollers 14.

[0085] Each roller 14 is rotatably supported on the roller seat 13. Its function is to directly contact the outer wall of the welded pipe 5, converting rotational motion into linear conveying force on the welded pipe 5. Its function is to support and drive the welded pipe 5 forward through rolling friction via its own rotation. Compared to sliding friction, this method has lower resistance, smoother operation, and is less likely to damage the pipe surface. The coordinated operation of all rollers 14 creates a low-resistance, high-efficiency conveying channel.

[0086] The roller conveyor motor 12 is driven by at least one roller 14. Its function is to provide the power source for the entire conveyor roller conveyor 1. Its function is to convert electrical energy into mechanical torque, driving one or more drive rollers 14 to rotate, which in turn drives all driven rollers 14 to rotate synchronously through friction or linkage between the rollers. This ensures that the conveyor roller conveyor 1 has a stable, adjustable, and sufficiently strong driving force to overcome the weight and inertia of the welded pipe 5, achieving precise speed and start / stop control.

[0087] A continuous conveyor section is formed by multiple modular roller bases 11 and the rollers 14 mounted on them. The top contours of all rollers 14 together form a smooth, continuous rolling contact surface. The function of this contact surface is to uniformly support the entire length of the welded pipe 5 and guide its axial movement with minimal frictional resistance. The ultimate result is to achieve smooth, uniform, and precise positional movement of the welded pipe 5 on the production line, providing a reliable guarantee for the timing control of the subsequent burr removal process.

[0088] Please see Figure 2 The burr cutting side pull mechanism 2 is located beside the conveyor roller 1 and is responsible for gripping, cutting to a fixed length, and initial traction of the inner burrs 6. The burr cutting side pull mechanism 2 specifically includes a side pull base 202, a slider 208, a gripping assembly, a cutting assembly, and a side pull drive assembly.

[0089] Please see Figure 3 The side pull base 202 serves as the mounting base and frame of the entire burr cutting side pull mechanism 2. Its function is to fix and support all moving and actuating components inside the mechanism, ensuring that they maintain a stable relative position and sufficient rigidity during operation.

[0090] The side-pull base 202 has at least a first position and a second position. Along the conveying direction of the welded pipe 5, the first position is located upstream of the second position. The first position is upstream of the second position, that is, closer to the incoming direction of the welded pipe 5. This position is used to install the gripping assembly (as described below, electromagnet 201). Its function is to ensure that when the front end of the welded pipe 5 arrives, the gripping assembly can intervene and capture it at the closest point as soon as possible, thereby shortening the action response time and improving positioning accuracy and gripping reliability.

[0091] The second position is located downstream of the first position. This position is typically used to install actuation and motion components, including the slide 205, slider 208, cutting assembly, and side-pull drive assembly. Its function is to receive the inner burr 6 that has been captured and pulled out to a certain length by the upstream gripping assembly, and to complete the main mechanical actions such as cutting, clamping, and lateral traction in this area. Since the welded pipe 5 has already moved a certain distance here, operating space is reserved for the pre-treatment of the burr (such as straightening a section) and subsequent side-pull actions.

[0092] Please refer to the following: Figure 3 and Figure 5 The slider 208 is slidably mounted on the side pull base 202 via the slide block 205. Its function is to act as a movable support platform. The slider 208 functions to slide linearly back and forth along the slide block 205 under the action of lateral driving force, thereby driving the cutting assembly mounted on it to perform lateral displacement.

[0093] In one possible implementation, the slide 205 is fixedly mounted in a second position on the side pull base 202. This arrangement serves to provide a guiding reference and rigid support for the lateral linear movement of the slider 208. The slide 205 functions as a rigid mechanical track, constraining and guiding the slider 208 to reciprocate along a predetermined lateral path.

[0094] The gripping component reliably captures and secures the initial end 61 of the internal burr protruding from the end of the welded pipe 5 in the initial stage. Its function is to provide a stable point of force for subsequent cutting and pulling operations, ensuring that the entire process can start smoothly.

[0095] The gripping component specifically includes an electromagnet 201. For example... Figure 1 As shown, the electromagnet 201 is fixedly installed in the first position of the side pull base 202. Its function is to use the strong magnetic field generated after being energized to reliably grasp the starting end 61 of the inner burr at the end section of the welded pipe 5 after the flying saw cutting process by non-contact magnetic adsorption.

[0096] Specifically, the electromagnet 201 is positioned in the first position to ensure that when the welded pipe 5 is transported to this station, the electromagnet 201 is in the axial position closest to the starting end 61 of the inner burr, thereby achieving the closest distance and strongest magnetic attraction. This non-contact gripping avoids end deformation, crushing, or damage that may be caused by mechanical collision or clamping, and is especially suitable for gripping irregularly shaped, brittle, and high-temperature burrs.

[0097] The cutting component is mounted on the slider 208. Its function is to cut the starting end 61 of the internal burr, which is fixed by the gripping component, to a suitable length. Its function is to provide a neat and reliable clamping section and to use its own clamping force to "take over" the starting end 61 of the internal burr from the gripping component, preparing for lateral traction.

[0098] Please refer to the following: Figure 3 and Figure 5 The cutting assembly specifically includes a cutting cylinder support 206, a cutting cylinder 207, an upper blade holder 212, an upper cutting blade 211, a lower blade holder 209, and a lower cutting blade 210. The cutting cylinder support 206 is directly fixed to the slider 208, providing a mounting base for the entire cutting action unit on the slider 208. The cylinder body of the cutting cylinder 207 is fixedly mounted on this cutting cylinder support 206, and its function is to output linear power to drive the upper blade holder 212 and its upper cutting blade 211 to perform lifting and lowering movements. The upper blade holder 212 is connected to the end of the piston rod of the cutting cylinder 207, forming the power output execution end; while the lower blade holder 209 and the lower cutting blade 210 fixed thereon are directly fixed to the slider 208, serving as the static reference for the entire shearing action.

[0099] The opposing surfaces of the upper cutter holder 212 and the lower cutter holder 209 are configured as a pair of clamping surfaces capable of jointly holding the starting end 61 of the internal burr. Their function is that, at the end of the downward movement of the upper cutter holder 212 driven by the cutting cylinder 207, the upper and lower cutter holders first close, firmly gripping the starting end 61 of the internal burr from both sides like jaws, achieving reliable fixation. Simultaneously, the upper cutting blade 211 fixed to the upper cutter holder 212 and the lower cutting blade 210 fixed to the lower cutter holder 209 have their opposing cutting edges configured as precisely mating shearing edges. Their function is that, simultaneously or slightly after the upper and lower cutter holders clamp the starting end 61 of the internal burr, the cutting edges of the upper and lower cutter perform staggered shearing, neatly cutting off the starting end 61 of the internal burr.

[0100] The side-pull drive assembly is connected to the slider 208. Its function is to provide the power to drive the slider 208 to slide laterally. Its function is to receive control signals, output linear motion, and drive the slider 208 and the cutting assembly it carries (along with the clamped internal burr starting end 61) to move as a whole in a direction away from the center line of the welded pipe 5.

[0101] The side-pull drive assembly specifically includes a side-pull cylinder support 204 and a side-pull cylinder 203. The side-pull cylinder support 204 is fixedly disposed at the second position of the side-pull base 202, and its function is to firmly anchor the mounting point of the drive element in the force-bearing area of ​​the device, providing a stable and rigid reaction force fulcrum for power output. The cylinder body of the side-pull cylinder 203 is fixedly mounted on this side-pull cylinder support 204, and its piston rod output end is drivenly connected to the slider 208. The side-pull cylinder 203 is configured such that, upon receiving a pneumatic signal, its piston rod performs a telescopic movement, thereby directly applying a horizontal pulling or pushing force to the slider 208.

[0102] The burr cutting and side-pulling mechanism 2 is configured to: grasp the starting end 61 of the inner burr by the gripping component, cut and hold the starting end 61 of the inner burr by the cutting component, and then drive the slider 208 to slide laterally by the side-pulling drive component, thereby using the held starting end 61 of the inner burr to pull the entire inner burr 6 laterally away from the center line of the welded pipe 5.

[0103] Specifically, firstly, the gripping assembly actively grips the starting end 61 of the internal burr protruding from the end of the welded pipe 5. Next, the cutting assembly mounted on the slider 208 cuts the gripped starting end 61 of the internal burr to a suitable length and immediately clamps and holds it securely. Subsequently, the side-pull drive assembly is activated, driving the slider 208 connected to it to slide laterally along the slide block 205.

[0104] In this way, by using the mechanically clamped and held internal burr starting end 61 of the cut-off component as a reliable force transmission medium, the lateral pulling force generated by the side-pull drive component is effectively transmitted to the continuous internal burrs 6 still attached to the inner wall of the welded pipe 5. The effect is not merely to pull out the burr end, but by grasping the end and applying lateral force, the entire continuous internal burr 6 gradually detaches from its attachment at the weld seam and is pulled away as a whole from the original centerline position of the welded pipe 5. This creates the preconditions for the internal burrs 6 to completely detach from the pipe wall and be removed by subsequent processes, achieving the technical objective of moving from "grabbing a point" to "pulling out the entire burr."

[0105] Please see Figure 2 The burr removal mechanism 3 is located after the burr cutting and pulling mechanism 2. Its function is to completely remove the inner burrs 6 that have been pulled laterally away from the center line from the opening of the welded pipe 5. Its function is to provide a continuous or intermittent rotating or oscillating pulling force, which acts on the exposed burr section to hook or scrape the inner burrs 6 from the pipe opening and guide them to the collection position.

[0106] Please see Figure 1The burr removal mechanism 3 is responsible for completely removing the internal burrs 6 that have been pulled out laterally from the centerline of the welded pipe 5 from the pipe opening area and guiding them to the collection position. This mechanism adopts the principle of rotational actuation, and its specific structure and working mechanism are as follows.

[0107] The burr removal mechanism 3 includes two removal bases 33, which are spaced apart along the axial direction of the welded pipe 5, forming the overall support frame of the mechanism. A sprocket seat 31 is correspondingly provided on each removal base 33 for mounting transmission components. The driving sprocket 36 and driven sprocket 32 ​​are rotatably mounted on these two sprocket seats 31, thus defining the two ends of the transmission system. A sprocket motor 37 is driven by the driving sprocket 36, serving as the power source to drive the entire transmission system. A chain 35 is wrapped around and tensioned on the driving sprocket 36 and driven sprocket 32, forming a closed circular motion track. The material-pulling rod 34 is fixedly mounted on this chain 35 and circulates with the chain.

[0108] The feed bar 34 is configured such that when it moves with the chain 35 to the highest point of the circular path, the top of its tip must be higher than the centerline height of the welded pipe 5 at that time. This spatial relationship ensures that the feed bar 34 can reliably contact and interfere with the internal burr 6 extending from the side of the pipe opening when it moves near the highest point.

[0109] When the sprocket motor 37 drives the system, the chain 35, equipped with the material-pulling bar 34, begins to rotate continuously. The material-pulling bar 34, moving to the working area, impacts, hooks, or pushes the internal burrs 6 that have been pulled out and suspended laterally from the side or below, positioned above the tube's centerline. Through this continuous mechanical pulling action, the mechanism peels the internal burrs 6 from the tube opening area and gives them a speed and trajectory towards the burr collection groove 4, thereby efficiently and automatically guiding the messy internal burrs 6 into the designated collection area, completing the transfer process of burrs from workpiece to waste material collection.

[0110] Please see Figure 2 The burr collection trough 4 is located downstream of the burr removal mechanism 3. Its function is to receive and accommodate the removed internal burrs 6. Through its specific structure (such as the inclined trough 42), it catches the falling internal burrs 6 and uses gravity to allow them to slide down to a designated area for centralized accumulation. This achieves automatic waste collection, keeps the work area clean, eliminates safety hazards, and facilitates subsequent centralized processing.

[0111] The burr collection tank 4 is the terminal component of the entire device. Its function is to receive, accommodate, and initially sort the internal burrs 6 removed by the burr removal mechanism 3, thereby achieving automatic collection of waste materials. The specific structural design of this component is designed to handle irregularly shaped and potentially elastic long strips of metal waste.

[0112] The burr collection trough 4 includes a collection trough base 41 and a material trough 42. The collection trough base 41 serves as the supporting foundation for the entire burr collection trough 4, and is fixedly installed on the ground or frame, providing stable overall support. The material trough 42 is located above the collection trough base 41, forming the main space for containing waste materials.

[0113] The wall of the trough 42 near the conveyor roller 1 is constructed as a guide ramp sloping downwards relative to the horizontal plane. This specific construction enables it to perform a clear function: when the ejected internal burr 6 flies towards the trough 42 at a certain speed and angle, this inclined guide ramp serves as the first contact surface, effectively catching the incoming burr. The ramp acts as both a buffer and a guide, changing the impact angle of the internal burr 6 and converting its downward impact force into a component force that slides downwards along the ramp.

[0114] First, the guide ramp prevents the internal burrs 6 from directly impacting the vertical tank wall and causing rebound splashing, thus improving collection safety. Second, the inclined ramp naturally guides the internal burrs 6 to slide smoothly and steadily to the bottom of the trough 42 under the influence of gravity. This not only ensures reliable collection of the internal burrs 6 and prevents them from accumulating at the trough opening, but also allows multiple internal burrs 6 to be stacked orderly at the bottom of the trough, improving the space utilization of the trough 42 and facilitating subsequent centralized cleaning or transfer operations. Ultimately, this ensures the continuous cleanliness of the work area and the closed-loop operation of the automated process.

[0115] In one possible implementation, this application provides a method for removing burrs from inside a welded pipe. Using the aforementioned burr removal device, the method is based on the process state where the welded pipe 5 is cut to length by a flying saw in the production line, and the starting end 61 of the internal burr is exposed at the pipe end of the welded pipe 5. The method includes the following steps:

[0116] Step 100: The welded pipe 5 with internal burrs 6 is conveyed axially along the conveyor roller 1. The function of this step is to accurately convey the welded pipe 5 to the subsequent functional stations, providing a precise material timing and position basis for the automated process.

[0117] Step 200: When the end of the welded pipe 5 being conveyed moves into the effective working range of the gripping assembly of the burr cutting side pulling mechanism 2, a gripping step is performed. The gripping assembly immediately actuates, reliably capturing and firmly adhering to the initial end 61 of the internal burr protruding from the pipe end in a non-contact or micro-contact manner. The purpose of this step is to establish an initial, reliable mechanical connection point for the entire cleaning process.

[0118] Step 300 is followed by the cutting and lateral pulling steps. The cutting component mounted on the slider 208 is activated, cutting the gripped starting end 61 of the internal burr to a preset length and immediately securing it firmly using the upper and lower cutter holders. Simultaneously, the lateral pulling drive component connected to the slider 208 moves synchronously or immediately afterward, driving the slider 208 to slide laterally along a predetermined track. The synergistic effect of these two sub-steps is that, using the mechanically gripped starting end 61 of the internal burr as a force application point, the force generated by the lateral movement of the slider 208 is effectively transmitted to the continuous internal burr 6 body still attached to the inner wall of the welded pipe 5, thereby pulling the entire burr laterally away from the original weld position from the central axis of the welded pipe 5.

[0119] Step 400, followed by the removal step. The burr removal mechanism 3 is activated, and its rotating or oscillating actuating element actively acts on the internal burr 6 that has been pulled out laterally and is hanging outside the pipe opening. Through mechanical actuation, the internal burr 6 is completely peeled off from the pipe opening area of ​​the welded pipe 5 and given a movement trajectory toward the collection direction.

[0120] Step 500, the final step is the collection process. The internal burrs 6, which have been removed and are in a free or semi-free state, are accurately guided to a specific area of ​​the burr collection trough 4 under the action of inertial force and gravity. Through the guiding structure of the material trough 42, the internal burrs 6 fall smoothly into the bottom of the trough, completing the transformation from production waste to centralized stockpile.

[0121] In one possible implementation, this application provides an application of a welded pipe internal burr removal device on a welded pipe production line. The device is positioned after the flying saw length-cutting process to automatically remove residual internal burrs 6 from the inner wall of the welded pipe after cutting by the flying saw. Its application includes:

[0122] (1) The first step is the loading and positioning stage. The welded pipe 5, which has been cut by the flying saw, has been fixed in length, and has its internal burr starting end 61 physically exposed at the pipe end due to the cutting action, is placed into the conveyor roller 1 of the device manually or automatically. The function of this step is to use the conveyor roller 1 as an interface to introduce the workpiece from the previous process into this cleaning station, thus establishing the starting point for automated processing.

[0123] (2) The next step is the automatic removal stage. The burr removal device inside the welded pipe is activated, and its control system will, according to a preset program, direct the various mechanisms to work together. The device automatically performs the following actions in sequence: gripping the starting end 61 of the internal burr, cutting and mechanically clamping the end to a fixed length, using the clamping point to pull the entire internal burr 6 laterally away from the pipe centerline, removing the pulled-out internal burr 6 from the pipe opening, and finally guiding the waste burr into the burr collection trough 4 for collection. This series of actions is completed sequentially without manual intervention, achieving the effect of efficiently, stably, and safely removing the internal burr 6 from inside the welded pipe 5 and converting it into centrally stored waste.

[0124] (3) Finally, there is the unloading and transfer stage. After the internal burrs 6 are removed, the device controls the conveyor roller 1 or other auxiliary mechanisms to output the cleaned welded pipe 5 from this station and transport it to the next predetermined processing station on the production line, such as inspection, painting, packaging or storage. This step ensures the continuous flow of the workpiece in the production process and realizes the smooth connection between this cleaning process and the upstream and downstream processes.

[0125] In summary, the present invention provides a device and method for removing burrs from inside welded pipes, which addresses the long-standing technical problem of high labor intensity, high operational risk, low efficiency, and unstable quality caused by relying entirely on manual removal of burrs from the pipe opening in existing welded pipe production. The invention proposes a complete automated solution.

[0126] This invention, through the design of an integrated device comprising a conveyor roller conveyor 1, a burr cutting and pulling mechanism 2, a burr removal mechanism 3, and a burr collection trough 4, achieves fully automated operation of "automatic end gripping, precise length cutting, reliable lateral traction, mechanical removal from the pipe opening, and centralized collection of waste materials." This solution not only fundamentally eliminates the safety hazards of manual operation and significantly reduces labor intensity, but also ensures the thoroughness and quality stability of internal burr removal 6 through the precision and consistency of the machinery.

[0127] Furthermore, the device of this invention has a reasonable structural design, mainly using standard industrial components such as cylinders, motors, and chain drives, resulting in low manufacturing costs, stable and reliable operation, and easy modification and integration into existing production lines. This invention transforms high-risk auxiliary processes that rely on manual experience into standardized production processes that can be precisely controlled and operated continuously, providing practical and effective technical equipment for the welded pipe manufacturing industry to improve automation levels, ensure safe production, and enhance product quality and production efficiency.

[0128] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A device for removing internal flash from a welded pipe, characterized in that, include: Conveying rollers (1) are used to convey welded pipes (5) with internal burrs (6) along their axial direction. A burr-cutting side-pulling mechanism (2) is disposed on the side of the conveyor roller conveyor (1), and the burr-cutting side-pulling mechanism (2) includes: Side-pull base (202); The slider (208) is slidably mounted on the side pull base (202) via the slide block (205); A gripping assembly for gripping and holding the inner burr starting end (61) protruding from the end of the welded pipe (5). A cutting component, disposed on the slider (208), is used to cut off the starting end (61) of the internal burr. A side-pull drive assembly is connected to the slider (208) and is used to drive the slider (208) to slide laterally; The burr cutting side pull mechanism (2) is configured to: grasp the starting end (61) of the inner burr by the gripping component, cut and hold the starting end (61) of the inner burr by the cutting component, and then drive the slider (208) to slide laterally by the side pull drive component, thereby using the held starting end (61) of the inner burr to pull the inner burr (6) laterally away from the center line of the welded pipe (5); A burr removal mechanism (3) is used to remove the internal burrs (6) from the opening of the welded pipe (5); A burr collection groove (4) is located downstream of the burr removal mechanism (3) in the removal path; The burr removal mechanism (3) includes: Two pull-out bases (33) are spaced apart along the axial direction of the welded pipe (5); A sprocket seat (31) is correspondingly disposed on each of the aforementioned pull-out bases (33); The driving sprocket (36) and the driven sprocket (32) are rotatably mounted on the two sprocket seats (31), respectively. A sprocket motor (37) is driven by the drive sprocket (36); A chain (35) is wound around the driving sprocket (36) and the driven sprocket (32); A feed bar (34) is disposed on the chain (35); The material-pushing bar (34) is configured such that when it rotates to its highest point with the chain (35), its position is higher than the center line of the welded pipe (5) so as to push the laterally pulled-out inner burrs (6) toward the burr collection groove (4).

2. The burr removal device for welded pipes according to claim 1, characterized in that, The side pull base (202) has at least a first position and a second position, and along the conveying direction of the welded pipe (5), the first position is located upstream of the second position; The slide (205) is installed at the second position of the side pull base (202).

3. The burr removal device for welded pipes according to claim 2, characterized in that, The gripping component includes: An electromagnet (201) is installed at the first position of the side pull base (202) to attract the starting end (61) of the internal burr at the pipe end section of the welded pipe (5) after the flying saw cutting process.

4. The burr removal device for welded pipes according to claim 3, characterized in that, The cutting component includes: The cut-off cylinder support (206) is fixedly mounted on the slider (208); A cutting cylinder (207) has its cylinder body fixedly mounted on the cutting cylinder support (206). The cutting cylinder (207) is configured to drive the upper knife holder (212) and the upper cutting blade (211) to move up and down. The upper blade holder (212) and the upper cutter (211) fixed thereon, the upper blade holder (212) being connected to the piston rod of the cutting cylinder (207); The lower blade holder (209) and the lower cutting blade (210) fixed thereon are fixedly mounted on the slider (208); The opposing surfaces of the upper blade holder (212) and the lower blade holder (209) are configured to clamp the starting end (61) of the internal burr together; the opposing cutting edges of the upper cutter (211) and the lower cutter (210) are configured to cooperate in cutting the starting end (61) of the internal burr.

5. The burr removal device for welded pipes according to claim 4, characterized in that, The side-pull drive assembly includes: A side-pull cylinder support (204) is fixedly installed at the second position of the side-pull base (202); A side-pull cylinder (203) has its cylinder body fixedly installed on the side-pull cylinder support (204), and its piston rod is driven to be connected to the slider (208) for driving the slider (208) to slide laterally.

6. The burr removal device for welded pipes according to claim 1, characterized in that, The burr collection groove (4) includes: Collection tank base (41); The material trough (42) is located above the collection trough base (41); The material trough (42) is located near the trough wall of the conveying roller (1) and is provided with a guide slope that is inclined downward relative to the horizontal plane. The guide slope is configured to receive the internal burrs (6) pulled out from the pipe opening of the welded pipe (5) and guide them to slide into the bottom of the material trough (42) for collection.

7. The burr removal device for welded pipes according to claim 1, characterized in that, The conveyor roller conveyor (1) includes: Multiple roller bases (11) are arranged at intervals along the conveying direction of the welded pipe (5); Multiple roller seats (13) are fixed one-to-one on the roller base (11); Rollers (14), each of the rollers (14) is rotatably supported on the roller seat (13). A roller motor (12) is driven to at least one of the rollers (14); The continuous conveying section is formed by multiple roller bases (11) and rollers (14) thereon, with the top of the rollers (14) forming a rolling contact surface for supporting and conveying the welded pipe (5).

8. A method for removing burrs from inside a welded pipe, characterized in that, Using the burr removal device for welded pipes as described in any one of claims 1-7, the method is based on the process state of the welded pipe (5) being cut to length by a flying saw in the production line, and the starting end (61) of the internal burr being exposed at the pipe end of the welded pipe (5), and includes the following steps: A welded pipe (5) with internal burrs (6) is conveyed axially through the conveying roller (1). When the end of the welded pipe (5) moves to the vicinity of the gripping assembly of the burr cutting side pull mechanism (2), the gripping assembly grips and holds the inner burr starting end (61) exposed from the end of the welded pipe (5). The cutting assembly cuts off and holds the starting end (61) of the internal burr, while the side pull drive assembly drives the slider (208) to slide laterally, thereby using the held starting end (61) of the internal burr to pull the entire internal burr (6) laterally away from the center line of the welded pipe (5). The burr removal mechanism (3) removes the internal burr (6) from the opening of the welded pipe (5); The removed internal burrs (6) are guided to the burr collection groove (4) for collection.

9. The application of a burr removal device for welded pipes as described in any one of claims 1-7 in a welded pipe production line, characterized in that, The burr removal device for welded pipes is placed after the flying saw cutting process to automatically remove the internal burrs (6) remaining on the inner wall of the welded pipe after cutting by the flying saw. Its applications include: The welded pipe (5), which has been cut by a flying saw and has the starting end (61) of the internal burr exposed at the pipe end, is placed into the conveying roller (1). Start the burr removal device inside the welded pipe, and sequentially perform burr gripping, cutting and pulling, pulling out and collecting to complete the automatic removal of the internal burr (6); The welded pipe (5) after removing the internal burrs is transported to the subsequent processing station.

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