A pipe forming machine

Abstract

The application discloses a round pipe forming machine and belongs to the field of pipeline processing equipment, which comprises a coiled material rack, a conveyor, a pre-roller press, a roller press, a welding mechanism, a cutting device, a correcting mechanism, a cooling conveying rack and a material receiving rack which are arranged in sequence, and further comprises a cleaning mechanism located in front of the roller press, wherein the pre-roller press and the roller press are connected through a conveying rack, and the roller press comprises a roller press frame, a driving device, a plurality of groups of forming rollers used for forming and a plurality of groups of adjusting mechanisms I used for adjusting the round pipe to be conical; compared with the traditional round pipe forming machine, the round pipe forming machine not only has a production assembly line from a steel plate raw material to a formed round pipe, but also can be directly formed into conical pipes of different specifications according to needs, so that the production demands of the round pipe and the conical pipe are met, and the funds, maintenance and space occupation of the traditional separate production equipment are reduced.

Description

Technical Field

[0001] This invention belongs to the field of pipe processing equipment, and more specifically, relates to a round pipe forming machine. Background Technology

[0002] Hollow steel pipes can be divided into two types according to their shape: square pipes and round pipes. The main differences between square and round pipes are their shape and their uses. In comparison, square pipes are more robust. However, in some special fields, such as fluid transportation, round pipes have higher transportation efficiency and better transportation effect. When choosing, you should select the appropriate steel pipe according to the application requirements.

[0003] Tapered pipes are seamless steel pipes designed and manufactured using specialized equipment and processes to form a tapered shape. Seamless tapered steel pipes are used as filter elements between pipes of different diameters in marine piping systems. The main material is carbon steel, but stainless steel and alloy steel can also be used. The taper of a tapered pipe refers to the degree to which the diameters of the two pipes at the pipe connection gradually decrease. The design and manufacture of tapered pipes must consider factors such as the strength of the pipe connection, its sealing performance, and the efficiency of fluid transmission. The taper of a tapered pipe can be adjusted according to specific application requirements. Generally speaking, the larger the taper of the tapered pipe, the better the strength and sealing performance of the pipe connection.

[0004] The current method for forming tapered tubes involves inserting one end of the formed round tube into a tapered tube retraction machine for further shaping. This requires two steps to complete the process of forming a tapered tube from steel plate raw material. Additionally, the equipment needs to include both a round tube forming machine and a tapered tube retraction machine, which not only increases processing time but also places a burden on equipment costs and maintenance. Summary of the Invention

[0005] To address the above deficiencies, this invention provides a round tube forming machine, which also includes a cleaning mechanism located in front of the roller press. The pre-roll press and the roller press are connected by a conveyor frame. The roller press includes a roller press frame, a drive device, several sets of forming rollers for forming, and several sets of adjustment mechanisms I for adjusting the round tube to a conical shape. The adjustment mechanism I includes two sets of adjustment rollers, including one set of positioning adjustment rollers and three sets of extrusion adjustment rollers, as well as two mirror-arranged linkage rods. The positioning adjustment rollers are connected to the roller press frame, and one end of each linkage rod is connected to the positioning adjustment rollers. The three sets of extrusion adjustment rollers are rotatably connected to the linkage rods, and the extrusion adjustment rollers can rotate with the rotation of the linkage rods. A drive motor I is mounted on the top of the roller press frame. A guide plate is fixed to the output end of the drive motor I. The linkage rods are fixed to the adjacent guide plates through an integrally formed connecting plate, and the axis of the output end of the drive motor I is concentric with the axis of the positioning adjustment rollers.

[0006] The cooling conveyor frame includes an adjustment mechanism II adapted to the tapered tube, which is used to control and adjust a number of nozzles installed on the cooling conveyor frame.

[0007] Furthermore, two mounting plates are installed on the top of the roller press frame, and several forming rollers are divided into two groups and installed on the two mounting plates respectively, with the forming rollers on both sides corresponding one to one. A reserved groove is provided between each pair of forming rollers on the same side at the mounting plate, and an adjusting roller is installed at the center of each reserved groove via a rotating shaft.

[0008] A slider is installed at the bottom of the rotating shaft, and the slider is installed on the top of the arc-shaped slide rail. The interior of each linkage rod is rotatably connected to the corresponding adjusting roller at the bottom through an embedded bearing.

[0009] Furthermore, the centers of several of the arc-shaped slide rails located on the same side are concentrically distributed, with the center of the adjusting roller closest to the end of the connecting plate as the center.

[0010] Furthermore, the two drive motors I rotate synchronously and in opposite directions.

[0011] Furthermore, the cleaning mechanism includes two symmetrically fixed frames on the top left end of the roller press frame, with a dust removal device and a drive motor II respectively installed at the ends of the two fixed frames that are far apart from each other;

[0012] The input end of the dust removal equipment is connected to the dust collection bin fixed between the bottoms of two fixed frames via a dust collection pipe;

[0013] Drive motor II is mounted on the motor frame. The output end of drive motor II is connected to drive rod via reducer. Two symmetrically arranged bevel gears I are fixed on the outer ring of drive rod. The top of drive rod is reinforced to the outside of the fixed frame on the same side via joint shaft. Two cleaning rollers are mounted between the two fixed frames via two rotating shafts. One end of the rotating shaft extends through the fixed frame on the same side to the side close to drive rod and is fixed with bevel gear II. The two bevel gears II mesh with bevel gear I at the same horizontal position for transmission.

[0014] The steel plate raw material passes between two cleaning rollers, and a side opening for scraping the welding end of the steel plate raw material is opened on the side of the two adjacent fixed frames. The inner top wall and inner bottom wall of the side opening are fixed with scrapers.

[0015] Furthermore, the cutting device is mounted on the outer shell at the top of the forming roller, and the cutting end is located to the left of the leftmost adjusting roller.

[0016] Furthermore, a set of synchronously operating electric push rods are installed at the bottom of the cooling conveyor frame near the correction mechanism. The bottom end of the electric push rods is fixed to the connecting beam between the cooling conveyor frame and the base of the correction mechanism. A drain hole is provided in the inner groove of the cooling conveyor frame for water flow. The drain hole is connected to the purification bucket installed at the bottom of the cooling conveyor frame.

[0017] A water pump is installed at the bottom of the cooling conveyor frame. The input end of the water pump is connected to an external water source, and the output end of the water pump is connected to the pipes fixed on the front and rear sides of the cooling conveyor frame through a split pipe. The nozzles on the front and rear sides of the cooling conveyor frame are connected to the pipes on the same side through flexible hoses.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. Compared with traditional round tube forming machines, it not only has a production line from steel plate raw materials to formed round tubes, but can also directly form tapered tubes of different specifications as needed. It not only meets the production needs of round tubes and tapered tubes, but also reduces the capital, maintenance and space occupation of traditional separate production equipment.

[0020] 2. By setting adjustment mechanism I and adjustment mechanism II, synchronous adaptation can be achieved. The adjustment roller and nozzle can be synchronously adapted to the changes in the forming requirements of the tapered tube, thereby ensuring the cooling efficiency of the nozzle.

[0021] 3. By setting up a cleaning mechanism, the steel plate raw materials can be cleaned before bending, preventing poor welding results caused by foreign objects on the welding end of the steel plate. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall invention.

[0023] Figure 2 for Figure 1 Enlarged diagram of point A in the diagram.

[0024] Figure 3 This is a top view of the roller press frame in this invention.

[0025] Figure 4 This is a side view of the cleaning mechanism in this invention.

[0026] Figure 5 This is a top view of the cooling conveyor frame in this invention.

[0027] Figure 6 This is a schematic diagram of the extension lines of each arc-shaped slide rail in this invention.

[0028] Figure 7 This is a schematic diagram showing the location where the round tube needs to be cut when it is formed into a tapered tube in this invention.

[0029] Figure 8 This is an enlarged view of the adjustable-gap forming roller in this invention.

[0030] In the diagram: 1. Roll material rack; 2. Conveyor; 3. Cleaning mechanism; 31. Fixed frame; 32. Dust removal equipment; 33. Dust collection bin; 34. Side opening; 35. Scraper; 36. Drive motor II; 37. Reducer; 38. Drive rod; 39. Bevel gear I; 310. Joint shaft; 311. Bevel gear II; 312. Rotating shaft; 313. Cleaning roller; 4. Pre-roll press; 5. Conveyor frame; 6. Roll press; 61. Roll press frame; 62. Mounting plate; 63. Reserved groove; 6 4. Recycling port; 65. Arc-shaped slide rail; 66. Slider; 7. Forming roller; 8. Cutting equipment; 9. Adjustment mechanism I; 91. Adjustment roller; 91a. Positioning adjustment roller; 91b. Extrusion adjustment roller; 92. Rotating shaft; 93. Guide plate; 94. Drive motor I; 95. Connecting plate; 96. Linkage rod; 10. Welding mechanism; 11. Correction mechanism; 12. Cooling conveyor frame; 13. Nozzle; 14. Purification hopper; 15. Receiving rack; 16. Testing equipment; 17. Drain hole. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example

[0033] like Figure 1 As shown, this embodiment provides a round tube forming machine, including a roll frame 1, a conveyor 2, a pre-roll press 4, a roll press 6, a welding mechanism 10, a cutting device 8, a straightening mechanism 11, a cooling conveyor frame 12, and a receiving frame 15 arranged in sequence. It should be noted that the above structure is the same as that of a traditional round tube forming production line, and the same structure can be used.

[0034] like Figure 2-3 As shown, it also includes a cleaning mechanism 3 located in front of the roller press 6. The pre-roll press 4 and the roller press 6 are connected by a conveyor frame 5. The conveyor frame 5 adopts a traditional roller conveyor frame. Whether to install a drive depends on the specific length. When the distance is short, the conveying can be achieved by the conveying of the pre-roll press 4. Otherwise, a drive needs to be installed to prevent the raw materials from lingering at the conveyor frame 5.

[0035] The roller press 6 includes a roller press frame 61 and a drive device. In this embodiment, the number of forming rollers 7 is 5 sets. The adjustment mechanism I9 includes 4 sets of adjustment rollers 91, which are divided into 1 set of fixed-position positioning adjustment rollers 91a and 3 sets of movable extrusion adjustment rollers 91b (i.e., the extrusion adjustment rollers 91b are installed on the top of the slider 66), and a linkage rod 96 for controlling the synchronous movement of the extrusion adjustment rollers 91b on the same side. The linkage rod 96 is fixedly connected to the guide plate 93 fixed to the output end of the drive motor I94 on the same side through the connecting plate 95 integrally formed on the left end. The two drive motors I94 are also fixedly connected to the guide plate 93 fixed to the output end of the drive motor I94 on the same side. 94 rotates synchronously and in opposite directions. It should be noted that the specific number of forming rollers 7 and adjusting rollers 91 needs to be determined according to the forming length, which will not be elaborated here. At the same time, in order to ensure the clamping force for forming the round tube into a tapered tube, the drive motor I94 adopts a torque motor. Compared with the traditional rotary motor, the torque motor has higher efficiency and precise control capability in scenarios where a large torque needs to be applied to the load. Alternatively, an electro-hydraulic rod (horizontally set, which can be fixed by adding a vertical pole) can be hinged to the rightmost end of the linkage rod 96 to cooperate with the rotation of the drive motor I94 and provide greater thrust.

[0036] Two mounting plates 62 are installed on the top of the roller press frame 61. Several forming rollers 7 are divided into two groups and installed on the two mounting plates 62 respectively, with the forming rollers 7 on both sides corresponding one-to-one. A pre-reserved groove 63 is provided between every two forming rollers 7 on the same side, located on the mounting plate 62. The center of each pre-reserved groove 63 is connected to an adjusting roller 91 via a rotating shaft 92. (Note: The last sentence appears to be incomplete and possibly refers to a different context.) Figure 1 ;

[0037] like Figure 8 As shown, the forming rollers 7 at the front and rear ends of the three extrusion adjusting rollers 91b on the right side have an adjustable spacing structure (such as using an adjusting roller seat with a screw adjustment structure), or can be achieved by manually replacing rollers of different diameters, so as to adapt to the subsequent passage of the tapered tube.

[0038] A slider 66 is installed at the bottom of the rotating shaft 92, and each slider 66 is installed on the top of the corresponding arc-shaped slide rail 65 at the bottom. Each arc-shaped slide rail 65 is fixed to the top of the roller press frame 61. The interior of each linkage rod 96 is rotatably connected to the corresponding adjusting roller 91 at the bottom through an embedded bearing.

[0039] It should be noted that, as Figure 6 As shown, the centers of several arc-shaped slide rails 65 located on the same side are concentrically distributed, with the center of the positioning adjustment roller 91a closest to the end of the connecting plate 95 as the center.

[0040] Its working principle is as follows: When a tapered tube forming operation is required, after the tube has been formed into a round tube shape by multiple forming rollers 7, two drive motors 194 drive two guide plates 93 to rotate in opposite directions (the front guide plate 93 rotates clockwise, and the rear guide plate 93 rotates counterclockwise). This causes the connecting rods 96 connected to each other to rotate around the center of the positioning adjustment roller 91a, so that the right ends of the two connecting rods 96 move away from each other. This causes the two connecting rods 96 to synchronously drive the right end of the extrusion adjustment roller 91b on the same side to slide along the bottom arc-shaped slide rail 65. Since the positions of the arc-shaped slide rails 65 are different, as the connecting rods 96 move, the two connecting rods 96 move from being on the same horizontal line to being in a state where their extension lines intersect (they should be on the same diameter line). This adjusts the structural conditions for forming the tapered tube. As the round tube is gradually conveyed from left to right, the gradually tightening gap (at the leftmost end) can transform the unwelded round tube into a tapered shape (the shape can be referenced). Figure 7 At this point, the operation of each piece of equipment used for conveying is stopped through timing control or manual monitoring. Figure 7 The dotted line cutting point on the right is located at the bottom of cutting device 8. Cutting device 8 cuts at this point to form a shaped conical tube and a circular tube (the cut end will deform due to the conical shape). Subsequently, the various conveying devices are activated through timing control or manual monitoring to ensure smooth operation. Figure 7 The cutting point on the left side of the dotted line stops again after it is at the bottom of the cutting device 8. The cutting device 8 cuts at this point to complete the severance of the deformed part and falls into the recycling port 64 for recycling. Then it continues to work repeatedly. The formed conical tube will be welded by the subsequent welding mechanism 10 and cooled by the cooling conveyor 12, and then recycled by the receiving rack 15.

[0041] Specifically, the cleaning mechanism 3 includes two symmetrically fixed brackets 31 on the top left end of the roller press frame 61. The dust removal equipment 32 (i.e., a conventional industrial dust collector) and the drive motor II 36 are respectively installed at the ends of the two fixed brackets 31 that are far apart from each other.

[0042] The input end of the dust removal equipment 32 is connected to the dust collection bin 33 fixed between the bottoms of the two fixed frames 31 through a dust collection pipe, which facilitates the collection of dust.

[0043] like Figure 4-5As shown, drive motor II36 is mounted on the motor frame. The output end of drive motor II36 is connected to drive rod 38 through reducer 37. Two symmetrically arranged bevel gears I39 are fixed on the outer ring of drive rod 38. The top end of drive rod 38 is reinforced to the outside of fixed frame 31 on the same side through joint shaft 310. Two cleaning rollers 313 are mounted between the two fixed frames 31 through two rotating shafts 312. One end of rotating shaft 312 extends through the fixed frame 31 on the same side to the side close to drive rod 38 and is fixed with bevel gear II311. The two bevel gears II311 mesh with bevel gears I39 at the same horizontal position for transmission.

[0044] The steel plate raw material passes between two cleaning rollers 313, and a side opening 34 is opened on the adjacent side of the two fixed frames 31 for scraping the welding end of the steel plate raw material. The inner top wall and inner bottom wall of the side opening 34 are fixed with scrapers 35 for scraping the two ends of the steel plate (so that no debris is attached to its surface) to ensure the flatness of the subsequent welding of the two ends.

[0045] A set of synchronously working electric push rods are installed at the bottom of the cooling conveyor 12 near the straightening mechanism 11 via a pin. The electric push rods are fixed on the connecting beam between the cooling conveyor 12 and the base of the straightening mechanism 11. The cooling conveyor 12 is raised by the electric push rods to facilitate the collection of wastewater. In order to achieve the function of being able to be raised, the support column at the bottom of the cooling conveyor 12 should be a telescopic structure and be hinged by a pin, or it should be placed without being fixed to the bottom of the cooling conveyor 12.

[0046] The cooling conveyor 12 has a drain hole 17 in the inner groove for water flow in the middle. The drain hole 17 is connected to the purification bucket 14 installed at the bottom of the cooling conveyor 12. It should be noted that the purification bucket 14 is a traditional filter (with an ultrafiltration membrane and other structures inside), which is convenient for the reuse of cooling water.

[0047] A water pump is installed at the bottom of the cooling conveyor frame 12. The input end of the water pump is connected to an external water source, and the output end of the water pump is connected to the pipes fixed on the front and rear sides of the cooling conveyor frame 12 through a split pipe. The nozzles 13 on the front and rear sides of the cooling conveyor frame 12 are connected to the pipes on the same side through flexible hoses, thereby realizing the purpose of water pumping water to each nozzle 13.

[0048] The cooling conveyor frame 12 includes an adjustment mechanism II adapted to the tapered tube. The adjustment mechanism II is used to control and adjust a number of nozzles 13 installed on the cooling conveyor frame 12. The adjustment mechanism II is a waterproof motor installed on the nozzle 13. The rotation of the nozzle 13 is adjusted by rotating the motor (the nozzle 13 includes a nozzle and a hose, and the output end of the motor is connected to the outer wall of the nozzle) to adapt to the shape of the tapered tube.

[0049] Additionally, a detection device 16 can be installed at the receiving rack 15 to count the number of round or conical tubes falling into it (the detection device 16 can use existing equipment such as photoelectric sensors or laser sensors to perform the counting work, which will not be described in detail here).

[0050] It should be noted that the structure described in this invention can be implemented in many different forms and is not limited to the embodiments described. Any equivalent transformations made by those skilled in the art based on the description and drawings of this invention, or direct or indirect applications in other related technical fields, such as the loading and unloading of other items, are included within the protection scope of this invention.

Claims

1. A circular tube forming machine, comprising a roll forming frame, a conveyor, a pre-roll press, a roll press, a welding mechanism, a cutting device, a straightening mechanism, a cooling conveyor frame, and a receiving frame arranged sequentially, characterized in that: It also includes a cleaning mechanism located in front of the roller press. The pre-roll press and the roller press are connected by a conveyor frame. The roller press includes a roller press frame, a drive device, several sets of forming rollers for forming, and several sets of adjustment mechanisms I for adjusting the round tube to a conical shape. The adjustment mechanism I includes two sets of adjustment rollers, including one set of positioning adjustment rollers and three sets of extrusion adjustment rollers, as well as two mirror-arranged linkage rods. The positioning adjustment rollers are connected to the roller press frame. One end of the linkage rod is connected to the positioning adjustment roller. The three sets of extrusion adjustment rollers are rotatably connected to the linkage rods, and the extrusion adjustment rollers can rotate with the rotation of the linkage rods. A drive motor I is mounted on the top of the roller press frame. A guide plate is fixed to the output end of the drive motor I. The linkage rod is fixed to the adjacent guide plate through an integrally formed connecting plate, and the axis of the output end of the drive motor I is concentric with the axis of the positioning adjustment roller. The top of the roller press frame is equipped with two mounting plates. Several forming rollers are divided into two groups and installed on the two mounting plates respectively. The forming rollers on both sides correspond one to one. There is a reserved groove on the mounting plate between each pair of forming rollers on the same side. An adjusting roller is installed in the center of each reserved groove through a rotating shaft. A slider is installed at the bottom of the rotating shaft, and the slider is mounted on the top of the arc-shaped slide rail. The interior of each linkage rod is rotatably connected to the corresponding adjusting roller at the bottom through an embedded bearing. The centers of several arc-shaped slide rails located on the same side are concentrically distributed, with the center of the adjusting roller closest to the connecting plate as the center. The cooling conveyor frame includes an adjustment mechanism II adapted to the tapered tube, which is used to control and adjust a number of nozzles installed on the cooling conveyor frame.

2. The round tube forming machine as described in claim 1, characterized in that: The two drive motors I rotate synchronously and in opposite directions.

3. The round tube forming machine as described in claim 1, characterized in that: The cleaning mechanism includes two symmetrically fixed frames on the top left end of the roller press frame, with a dust removal device and a drive motor II respectively installed at the ends of the two fixed frames that are far apart from each other; The input end of the dust removal equipment is connected to the dust collection bin fixed between the bottoms of two fixed frames via a dust collection pipe; Drive motor II is mounted on the motor frame. The output end of drive motor II is connected to drive rod via reducer. Two symmetrically arranged bevel gears I are fixed on the outer ring of drive rod. The top of drive rod is reinforced to the outside of the fixed frame on the same side via joint shaft. Two cleaning rollers are mounted between the two fixed frames via two rotating shafts. One end of the rotating shaft extends through the fixed frame on the same side to the side close to drive rod and is fixed with bevel gear II. The two bevel gears II mesh with bevel gear I at the same horizontal position for transmission. The steel plate raw material passes between two cleaning rollers, and a side opening for scraping the welding end of the steel plate raw material is opened on one side of the two adjacent fixed frames. The inner top wall and inner bottom wall of the side opening are fixed with scrapers.

4. A round tube forming machine as described in claim 1, characterized in that: The cutting device is mounted on the outer shell at the top of the forming roller, and the cutting end is located to the left of the leftmost adjusting roller.

5. A round tube forming machine as described in claim 1, characterized in that: A set of synchronously working electric push rods are installed at the bottom of the cooling conveyor frame near the correction mechanism. The bottom end of the electric push rods is fixed to the connecting beam between the cooling conveyor frame and the base of the correction mechanism. A drain hole is opened in the inner groove of the middle of the cooling conveyor frame for water flow. The drain hole is connected to the purification bucket installed at the bottom of the cooling conveyor frame. A water pump is installed at the bottom of the cooling conveyor frame. The input end of the water pump is connected to an external water source, and the output end of the water pump is connected to the pipes fixed on the front and rear sides of the cooling conveyor frame through a split pipe. The nozzles on the front and rear sides of the cooling conveyor frame are connected to the pipes on the same side through flexible hoses.

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