A multifunctional production line

Abstract

The present invention provides a multifunctional production line, which includes a feeding mechanism, a rough forming structure, a welding mechanism, a sizing mechanism, a driving mechanism and a quick-change device. The present invention is achieved by installing multiple forming roller frames on a placement table. Multiple workbenches are fixedly installed on the ground, and the placement tables can be fixedly installed on the workbenches. In addition, a driving mechanism is installed on one side of the workbench, and the driving shaft of the driving mechanism can be connected to and separated from the rotating shaft of the forming roller on the forming roller frame through a quick-change device. When it is necessary to change the production of different types of steel pipes, it is only necessary to separate the driving mechanism from the forming roller frame through the quick-change device, replace the placement table on the workbench, and connect the driving end of the driving mechanism to the rotating shaft of the forming roller on the new forming roller frame installed on the workbench through the quick-change device. It is easy to operate and use, reduces the construction cost of the production line, and effectively reduces the processing cost of steel pipe production.

Description

Technical Field

[0001] The invention belongs to the technical field of steel pipe production, and particularly relates to a multifunctional production line. Background Art

[0002] Steel pipes are typically produced by coiling steel strips into continuous rolls. Consequently, the production process typically utilizes multiple forming roll stands. The steel pipes are shaped by the rotating rolls on the forming roll stands. The subsequent sizing stage, in particular, is used to determine the final dimensions of the pipes. However, due to the wide variety of product sizes and diameters, the production of each product requires the establishment of multiple production lines with different specifications and models. This not only makes it difficult to manage the storage of the produced steel pipes, but also significantly increases the processing costs of steel pipe production due to the high costs of constructing production lines. Summary of the Invention

[0003] The embodiment of the present invention provides a multifunctional production line, which aims to solve the problem in the prior art of high production and processing costs of steel pipes due to the large variety of steel pipe models.

[0004] To achieve the above object, the technical solution adopted by the present invention is to provide a multifunctional production line, comprising:

[0005] Feeding mechanism, used for conveying raw materials;

[0006] A rough forming mechanism, located behind the feeding mechanism, is used to roll and bend the raw material into a tube with a predetermined hole shape in cross section;

[0007] The welding mechanism is used to weld the opening of the tube body to form the tube body into a closed circle;

[0008] A sizing mechanism is provided behind the welding mechanism and is used to sizing and forming the pipe body. The sizing mechanism includes a plurality of forming roller frames arranged in sequence along the conveying direction of the pipe body, and a placement table for mounting the forming roller frames. The placement table is detachably mounted with a workbench, and the workbench is used to be fixedly mounted on the ground.

[0009] A driving mechanism, fixedly mounted on one side of the workbench, for driving the forming rollers on the forming roller stand to rotate;

[0010] A quick-change device is provided between the driving mechanism and the workbench. The quick-change device is provided with a transmission shaft that is transmission-connected to the driving end of the driving mechanism, and the transmission shaft is detachably connected to the rotating shaft of the forming roller.

[0011] In a possible implementation, the driving mechanism includes:

[0012] A fixed platform, mounted on one side of the workbench;

[0013] A transmission shaft is rotatably mounted on the fixed platform, wherein the axis of the transmission shaft is arranged along the conveying direction of the tube body;

[0014] There are multiple transmission assemblies, and the input ends of the multiple transmission assemblies are transmission-connected to the transmission shaft, and the output shaft of the transmission assembly is transmission-connected to the input end of the quick-change device.

[0015] In a possible implementation, the transmission shaft is formed by connecting a plurality of connecting shafts end to end, and the plurality of connecting shafts are coaxially arranged with each other, and the connecting shafts correspond one to one to the transmission components.

[0016] In one possible implementation, the quick-change device includes:

[0017] A base, fixedly mounted between the workbench and the drive mechanism, with a mounting bracket mounted on the base, the mounting bracket having the freedom to slide on the base toward or away from the workbench;

[0018] A linkage shaft is rotatably disposed on the base, the axis of the linkage shaft is disposed along the sliding direction of the mounting frame, and one end of the linkage shaft close to the driving mechanism is provided with a connecting portion for driving connection with the output shaft of the driving mechanism;

[0019] A connecting sleeve is fixedly mounted on one end of the linkage shaft close to the workbench, the connecting sleeve is coaxial with the linkage shaft, and an anti-rotation edge is provided inside the connecting sleeve;

[0020] A connecting rod is detachably connected to the connecting sleeve, the connecting rod is transmission-connected to the rotating shaft of the forming roller, the connecting rod can slide into the connecting sleeve, and a limiting edge is provided on the connecting rod that slides with the anti-rotation edge.

[0021] In a possible implementation, an anti-rotation key is installed inside the connecting sleeve, the anti-rotation edge is located on the anti-rotation key, and two pressing keys for pressing the anti-rotation key against the inner wall of the connecting sleeve are arranged at intervals inside the connecting sleeve.

[0022] In one possible implementation, the anti-rotation key is provided with a connecting portion connected to the pressure key, the anti-rotation key is provided with a makeshift groove for avoiding the pressure key, the side of the connecting portion close to the pressure key is an inclined surface, the inclined surface is gradually inclined in the direction away from the axis of the connecting sleeve toward the direction close to the pressure key, and the pressure key is provided with an extrusion surface arranged parallel to the inclined surface.

[0023] In one possible implementation, a flange is provided between the linkage shaft and the output shaft of the drive mechanism. There are two flanges, which are coaxially arranged and respectively fixed on the linkage shaft and the output shaft of the drive mechanism. A reinforcement key is also provided between the two flanges, and the length direction of the reinforcement key is arranged along the radial direction of the flange.

[0024] In a possible implementation, a plurality of forming roller frames are arranged on the placement table, and a positioning pin is fixedly installed on the bottom of the placement table, and a positioning hole that slides with the positioning pin is provided on the workbench.

[0025] In one possible implementation, a cooling water trough is further provided behind the output port of the welding mechanism, and a guide plate is detachably connected to the end of the cooling water trough. A guide hole matching the shape of the tube body is provided on the guide plate, and the guide hole is connected to the interior of the cooling water trough.

[0026] In a possible implementation, a support guide plate is provided at the bottom of the cooling water trough, and the support guide plate is arranged to be gradually inclined downward along the conveying direction of the pipe body.

[0027] Compared to the prior art, the solution illustrated in the embodiments of this application utilizes a feed mechanism for conveying raw steel sheet materials. A rough forming structure is located behind the feed mechanism. This rough forming structure rolls and bends the raw steel sheet into a tubular shape with a predetermined pass profile. A subsequent welding mechanism welds the opening of the tube body, forming a closed circular shape. The tube body is then pressed and formed to the specified dimensions by a forming roller stand on a sizing mechanism. In this application, multiple forming roller stands are mounted on a placement table. Multiple workbenches are fixedly mounted on the floor, and the placement tables can be fixedly mounted to the workbenches. A drive mechanism is mounted on one side of the workbenches. The drive shaft of the drive mechanism can be connected and disconnected with the rotating shaft of the forming rollers on the forming roller stand via a quick-change mechanism. To switch to a different steel pipe type, the drive mechanism can simply be disconnected from the forming roller stand using the quick-change mechanism, the placement table on the workbench replaced, and the drive end of the drive mechanism connected to the rotating shaft of the forming roller on the new forming roller stand mounted on the workbench using the quick-change mechanism. It is easy to operate and use, which reduces the construction cost of the production line and effectively reduces the processing cost of steel pipe production. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic structural diagram of a multifunctional production line provided by an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of the connection structure between the quick-change device and the sizing mechanism provided in an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of the installation structure of a sizing mechanism provided in an embodiment of the present invention;

[0031] Figure 4 A schematic diagram of the installation structure of the quick-change device provided in an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the installation structure of the anti-rotation key provided in an embodiment of the present invention;

[0033] Figure 6 A schematic diagram of the installation structure of the reinforcement key provided in an embodiment of the present invention;

[0034] Figure 7 A schematic diagram of the partial structure of a cooling water tank provided in an embodiment of the present invention;

[0035] Figure 8 A schematic diagram of the partial structure of a driving mechanism provided in an embodiment of the present invention.

[0036] Description of reference numerals:

[0037] 1. Feeding mechanism; 2. Rough forming structure; 3. Welding mechanism; 4. Sizing mechanism; 41. Forming roller frame; 42. Placing table; 421. Positioning pin; 5. Workbench; 6. Driving mechanism; 61. Fixed table; 62. Transmission shaft; 621. Connecting shaft; 63. Transmission assembly; 7. Quick-changing device; 71. Base; 72. Mounting frame; 73. Linkage shaft; 731. Flange; 732. Reinforcement key; 74. Connecting sleeve; 75. Connecting rod; 76. Anti-rotation key; 761. Connecting part; 77. Press key; 8. Cooling water trough; 81. Guide plate; 82. Support guide plate. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] Please also refer to Figure 1 、 Figure 2 and Figure 3The multifunctional production line provided by the present invention is now described. The multifunctional production line includes a feeding mechanism 1, a rough forming mechanism, a welding mechanism 3, a sizing mechanism 4, a driving mechanism 6, and a quick-changing device 7. The feeding mechanism 1 is used to convey raw materials; the rough forming mechanism is located behind the feeding mechanism 1, and is used to roll and bend the raw materials into a tube with a predetermined hole shape in cross section; the welding mechanism 3 is used to weld the opening of the tube body to form a closed circle; the sizing mechanism 4 is arranged behind the welding mechanism 3, and is used to sizing and forming the tube body. The sizing mechanism 4 includes a plurality of forming roller frames 41 arranged in sequence along the conveying direction of the tube body, and a placement table 42 for installing the forming roller frames 41. The placement table 42 is detachably installed with a workbench 5, and the workbench 5 is used to be fixedly installed on the ground; the driving mechanism 6 is fixedly installed on one side of the workbench 5, and is used to drive the forming roller on the forming roller frame 41 to rotate; the quick-changing device 7 is arranged between the driving mechanism 6 and the workbench 5, and the quick-changing device 7 is provided with a transmission shaft 62 that is transmission-connected to the driving end of the driving mechanism 6, and the transmission shaft 62 is detachably connected to the rotating shaft of the forming roller.

[0040] Compared with the prior art, the multifunctional production line provided in this embodiment is provided with a feeding mechanism 1 for conveying steel plate raw materials, and a rough forming structure 2 is provided behind the feeding mechanism 1. The rough forming structure 2 can roll and bend the raw steel plate into a tube with a predetermined hole shape. The opening of the tube body is welded by a subsequent welding mechanism 3 to form the tube body into a closed circular shape. The tube body is then pressed and formed into a specified size by a forming roller frame 41 on a sizing mechanism 4. In this application, multiple forming roller frames 41 are installed on a placement table 42. Multiple workbenches 5 are fixedly installed on the ground, and the placement table 42 can be fixedly installed on the workbench 5. A drive mechanism 6 is installed on one side of the workbench 5. The drive shaft of the drive mechanism 6 can be connected to and separated from the rotating shaft of the forming roller on the forming roller frame 41 through a quick-change device 7. When switching to a different type of steel pipe, the quick-change device 7 is used to separate the drive mechanism 6 from the forming roller frame 41, replace the placement table 42 on the workbench 5, and connect the drive end of the drive mechanism 6 to the rotating shaft of the forming roller on the new forming roller frame 41 installed on the workbench 5 using the quick-change device 7. This is easy to operate and use, reduces the construction cost of the production line, and effectively reduces the processing cost of steel pipe production.

[0041] Optionally, in this embodiment, there are multiple workbenches 5, which are arranged sequentially on the ground along the conveying direction of the tube body, and a reinforcement plate is fixedly connected between two workbenches 5. The reinforcement plate is arranged in the horizontal direction and is fixedly connected to the top surface or the bottom surface of the workbenches 5, thereby ensuring that the tabletops of the two workbenches 5 are at the same horizontal height.

[0042] Optionally, in this embodiment, when the placement table 42 is installed on the workbench 5 , the placement table 42 is installed on two adjacent workbench 5 , which can enhance the installation stability of the placement table 42 .

[0043] In some embodiments, the driving mechanism 6 may be configured as follows: Figure 2 、 Figure 8 See also Figure 2 、 Figure 8 The drive mechanism 6 includes a fixed platform 61, a transmission shaft 62, and a transmission assembly 63. The fixed platform 61 is mounted on one side of the workbench 5. The transmission shaft 62 is rotatably mounted on the fixed platform 61, with its axis aligned along the pipe conveying direction. There are multiple transmission assemblies 63, each with its input end in transmission connection with the transmission shaft 62, and its output shaft in transmission connection with the input end of the quick-change device 7. The fixed platform 61 is fixedly mounted on the ground. Multiple supports for mounting the transmission shaft 62 are fixedly mounted on the fixed platform 61. The transmission shaft 62 is rotatably mounted on the supports via bearings. The transmission assembly 63 includes a first gear coaxially arranged with and fixedly connected to the transmission shaft 62, and a second gear meshing with a second gear. The second gear is transmission-connected to a first bevel gear. A second bevel gear is fixedly connected to the input shaft of the quick-change device 7, and the second bevel gear meshes with the first bevel gear. This facilitates transmission between the transmission shaft 62 and the input end of the quick-change device 7.

[0044] Optionally, in this embodiment, a telescopic universal coupling is further provided between the output end of the transmission assembly 63 and the input end of the quick-change device 7 .

[0045] In some embodiments, the transmission shaft 62 may be Figure 2 、 Figure 8 See also Figure 2 、 Figure 8 The transmission shaft 62 is composed of multiple connecting shafts 621 connected end-to-end. These connecting shafts 621 are coaxially arranged, and each connecting shaft 621 corresponds to a transmission assembly 63. Multiple installation boxes are detachably mounted on the fixed platform 61, and the transmission assemblies 63 are located within the installation boxes. The position of the installation boxes on the fixed platform 61 is adjustable. By dividing the transmission shaft 62 into multiple connecting shafts 621, the number of connecting shafts 621 and transmission assemblies 63 can be adjusted according to the number of forming roller frames 41, thereby meeting the power supply requirements of different production lines.

[0046] Specifically, in this embodiment, the connecting shaft 621 and the connecting assembly are both mounted on the mounting box, with the connecting shaft 621 being rotatably mounted on the mounting box. A latch is provided at the bottom of the mounting box, allowing for quick positioning onto the fixing platform 61. Bolts secure the mounting box to the fixing platform 61, allowing for quick reconnection and expansion of the connecting shaft 621.

[0047] Specifically, in this embodiment, the driving mechanism 6 also includes a driving motor, the driving shaft of the driving motor is connected to a gearbox, and the output shaft of the gearbox is connected to one of the connecting shafts 621, so that the same driving motor can drive multiple connecting shafts 621 to rotate together at the same time.

[0048] In some embodiments, the quick-change device 7 can be used as follows: Figure 4 The structure shown. Figure 4 The quick-change device 7 includes a base 71, a linkage shaft 73, a connecting sleeve 74, and a connecting rod 75. The base 71 is fixedly installed between the workbench 5 and the drive mechanism 6. A mounting bracket 72 is installed on the base 71. The mounting bracket 72 has the freedom to slide in the direction close to or away from the workbench 5 on the base 71; the linkage shaft 73 is rotatably arranged on the base 71, and the axis of the linkage shaft 73 is arranged along the sliding direction of the mounting bracket 72. The end of the linkage shaft 73 close to the drive mechanism 6 is provided with a connecting portion 761 for transmission connection with the output shaft of the drive mechanism 6; the connecting sleeve 74 is fixedly installed on the end of the linkage shaft 73 close to the workbench 5, the connecting sleeve 74 is coaxially arranged with the linkage shaft 73, and an anti-rotation edge is provided inside the connecting sleeve 74; the connecting rod 75 is detachably connected to the connecting sleeve 74, the connecting rod 75 is transmission-connected to the rotating shaft of the forming roller, the connecting rod 75 can slide into the connecting sleeve 74, and a limiting edge is provided on the connecting rod 75 that slides with the anti-rotation edge. A driving cylinder is installed between the base 71 and the mounting frame 72. Its fixed and driven ends are hingedly mounted on the base 71 and mounting frame 72, respectively. The driving cylinder drives the mounting frame 72 to slide on the base 71. During use, the connecting rod 75 is first fixed to the rotating shaft of the forming roller. The driving cylinder then drives the sliding frame toward the forming roller, allowing the connecting rod 75 to slide into the connecting sleeve 74, completing the connection between the two. The other end of the linkage shaft 73 is connected to the output end of the drive mechanism 6 via a retractable universal coupling. This allows for a quick connection between the forming roller and the drive mechanism 6.

[0049] In some embodiments, the mounting bracket 72 may be configured as follows: Figure 4 The structure shown. Figure 4A sliding frame is slidably mounted on the mounting frame 72. The position of the sliding frame on the mounting frame 72 is freely adjustable in the vertical direction. A linkage shaft 73 is rotatably mounted on the sliding frame. A pusher is also provided between the sliding frame and the mounting frame 72 to drive the sliding frame to slide on the mounting frame 72. The pusher can be used to adjust the position of the sliding frame on the mounting frame 72. The adjustable position of the sliding frame on the mounting frame 72 allows the height of the linkage shaft 73 to be adjusted according to the height of the forming rollers on different sizes of forming mechanisms, ensuring that the linkage shaft 73 and the rotation axis of the forming rollers remain coaxial. This allows the linkage shaft 73 switching device of the present application to be suitable for switching and applying forming mechanisms of different sizes.

[0050] Specifically, in this embodiment, a retractable universal coupling is used between the linkage shaft 73 and the driving shaft of the driving source.

[0051] In some embodiments, the sliding frame may be configured as follows: Figure 4 See the structure shown. Figure 4 The sliding frame is provided with a plurality of mounting seats, the positions of which on the sliding frame are freely adjustable in the vertical direction, and the linkage shafts 73 are rotatably mounted on the mounting seats. The number of mounting seats corresponds to the number of linkage shafts 73. The number of mounting seats can be determined based on the number of forming rollers on the forming structure. Preferably, in this embodiment, the number of mounting seats and linkage shafts 73 are both two, and the two linkage shafts 73 are used to connect to the rotation axes of the two forming rollers on the forming structure. The spacing between the two mounting seats can be adjusted on the sliding frame, which can be adapted to forming mechanisms of different specifications and sizes.

[0052] In some embodiments, the sliding frame may be configured as follows: Figure 4 See the structure shown. Figure 4 The sliding frame is fixedly mounted with a sliding rod, which is arranged in a vertical direction. The mounting seat is slidably mounted on the sliding rod, and a support member is threadedly connected to the sliding rod. The mounting seat can abut against the support member to limit the position of the mounting seat on the sliding rod. The mounting seat is equipped with a guide hole that slidably cooperates with the sliding rod. The support member is a nut. The support member is threadedly connected to the sliding rod, and its position on the sliding rod can be adjusted. The mounting seat can abut against the support member, thereby securing the mounting seat to the sliding rod.

[0053] Specifically, in this embodiment, support members are provided on both sides of the mounting seat along the length direction of the sliding rod. The two support members of the mounting seat can firmly fix the mounting seat on the sliding rod.

[0054] In some embodiments, the connecting sleeve 74 may be formed as follows: Figure 4 、 Figure 5 See also Figure 4 、 Figure 5An anti-rotation key 76 is installed inside the connecting sleeve 74. The anti-rotation edge is located on the anti-rotation key 76, and two pressure keys 77 are spaced apart inside the connecting sleeve 74 to press the anti-rotation key 76 against the inner wall of the connecting sleeve 74. The anti-rotation key 76 is removably installed inside the connecting sleeve 74. The anti-rotation edge serves to limit the relative rotation of the connecting sleeve 74 and the connecting rod 75. Therefore, if the anti-rotation edge is damaged, it can easily cause shaking between the connecting sleeve 74 and the connecting rod 75. The provision of the anti-rotation key 76 allows only the anti-rotation key 76 to be replaced when the anti-rotation edge wears out, saving on subsequent maintenance and repair costs. The pressure keys 77 are fixed to the inner wall of the connecting sleeve 74 by bolts. The bolts are threadedly connected to the pressure keys 77 and are set through the side wall of the connecting sleeve 74. The anti-rotation key 76 is located between the two pressure keys 77, and the two pressure keys 77 press the anti-rotation key 76 against the inner wall of the connecting sleeve 74.

[0055] Specifically, in this embodiment, a mounting groove for mounting the pressing key 77 is provided on the inner wall of the connecting sleeve 74 .

[0056] In some embodiments, the connecting sleeve 74 may be formed as follows: Figure 4 、 Figure 5 See also Figure 4 、 Figure 5 The anti-rotation key 76 is provided with a connecting portion 761 that connects to the pressing key 77. The anti-rotation key 76 is provided with a clearance groove for the pressing key 77. The side of the connecting portion 761 near the pressing key 77 is an inclined surface, which is gradually inclined from the direction away from the axis of the connecting sleeve 74 toward the pressing key 77. The pressing key 77 is provided with a pressing surface arranged parallel to the inclined surface. The connecting portion 761 is provided on one side of the anti-rotation key 76. When the anti-rotation key 76 is installed on the inner wall of the connecting sleeve 74 via the pressing key 77, the anti-rotation key 76 is located on the side of the pressing key 77 near the rotating axis of the connecting sleeve 74. This prevents the pressing key 77 from interfering with the sliding of the connecting rod 75 into the connecting sleeve 74. A dovetail groove with a trapezoidal cross-section is formed between the two pressing keys 77. The inner sidewall of the dovetail groove is parallel to the inclined surface of the pressing key 77. This facilitates the installation and fixation of the anti-rotation key 76.

[0057] In some embodiments, the linkage shaft 73 may be Figure 4 、 Figure 6 See also Figure 4 、 Figure 6A flange 731 is provided between the linkage shaft 73 and the output shaft of the drive mechanism 6. Two flanges 731 are coaxially arranged and fixed to the linkage shaft 73 and the output shaft of the drive mechanism 6, respectively. A reinforcing key 732 is also provided between the two flanges 731. The length of the reinforcing key 732 is arranged along the radial direction of the flanges 731. A keyway for mounting the reinforcing key 732 is provided on the side of the flanges 731. When the two flanges 731 are attached together, the reinforcing key 732 is located within the keyway of the two flanges 731. The provision of the reinforcing key 732 can enhance the connection strength between the linkage shaft 73 and the output shaft.

[0058] Specifically, in this embodiment, the connection method between the linkage shaft 73 and the connecting sleeve 74 is the same as the connection method between the linkage shaft 73 and the output shaft of the driving mechanism 6 .

[0059] In some embodiments, the placement table 42 may be configured as follows: Figure 1 、 Figure 2 and Figure 3 See also Figure 1 、 Figure 2 and Figure 3 A plurality of forming roller frames 41 are arranged on the placement table 42, and a positioning pin 421 is fixedly installed on the bottom of the placement table 42. A positioning hole that slides with the positioning pin 421 is provided on the workbench 5. A guide roller is also provided between the two forming roller frames 41 to assist in the transportation of the guide tube body between the two forming roller frames 41. In addition, by installing a positioning pin 421 on the bottom of the placement table 42 and providing a mounting hole that slides with the positioning pin 421 on the bottom of the placement table 42, a fixing bolt is provided on the positioning pin 421, which passes through the positioning pin 421 and is threadedly connected to the bottom of the mounting hole, thereby fixing the positioning pin 421 to the bottom of the placement table 42. By arranging a plurality of forming roller frames 41 on the placement table 42, when replacing the forming roller frames 41, the placement table 42 can be hoisted to simultaneously complete the installation and removal of multiple forming roller frames 41.

[0060] In some embodiments, the cooling water tank 8 may be Figure 1 、 Figure 7 See also Figure 1 、 Figure 7A cooling water trough 8 is also provided behind the output port of the welding mechanism 3. A guide plate 81 is detachably connected to the end of the cooling water trough 8. A guide hole that matches the shape of the tube body is provided on the guide plate 81. The guide hole is connected to the inside of the cooling water trough 8. A spray pipe is provided above the cooling water trough 8. The spray pipe can spray cooling water on the top of the welded tube body to reduce the temperature of the tube body. The guide plate 81 is installed at both ends of the cooling water trough 8. The position of the tube body entering the cooling water trough 8 and the position of the tube body outputting from the cooling water trough 8 can be positioned by the guidance of the guide plate 81. This makes it easy to determine the position of the forming roller frame 41 on the sizing mechanism 4 behind the cooling water trough 8 according to the position of the guide plate 81 at the output end of the cooling water trough 8. This avoids unnecessary debugging at a later stage.

[0061] Optionally, in this embodiment, a guide sleeve for installing the guide plate 81 is provided at the end of the cooling water trough 8, and a guide column that slides with the inner hole of the guide sleeve is fixedly installed on one side of the guide plate 81. The position of the guide plate 81 inside the guide sleeve can be determined by sliding the guide column into the inside of the guide sleeve.

[0062] Optionally, in this embodiment, a plurality of brackets are fixedly installed on the top of the cooling water trough 8, and the plurality of brackets are spaced apart along the length direction of the cooling water trough 8. A clearance hole is provided inside the bracket to avoid the movement of the pipe body, and a roller is rotatably provided at the bottom of the clearance hole. The roller is rotatably provided on the bracket to support the pipe body for transportation inside the cooling water trough 8.

[0063] Optionally, in this embodiment, the top of the cooling water trough 8 is an open structure, and the spray pipe is installed on the top of the cooling water trough 8. The bracket is overlapped on the top of the cooling water trough 8 and is detachably mounted on the cooling water trough 8 by bolts.

[0064] In some embodiments, the cooling water tank 8 may be Figure 1 、 Figure 7 See also Figure 1 、 Figure 7 The bottom of the cooling water trough 8 is provided with a support guide plate 82, which is arranged to gradually tilt downward along the conveying direction of the tube. The support guide plate 82 can support the tube when the tube tilts downward inside the cooling water trough 8, thereby preventing the tube from bending and tilting.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multifunctional production line, characterized in that: include: Feeding mechanism, used for conveying raw materials; A rough forming mechanism, located behind the feeding mechanism, is used to roll and bend the raw material into a tube with a predetermined hole shape in cross section; The welding mechanism is used to weld the opening of the tube body to form the tube body into a closed circle; A sizing mechanism is provided behind the welding mechanism and is used to sizing and forming the pipe body. The sizing mechanism includes a plurality of forming roller frames arranged in sequence along the conveying direction of the pipe body, and a placement table for mounting the forming roller frames. The placement table is detachably mounted with a workbench, and the workbench is used to be fixedly mounted on the ground. A driving mechanism, fixedly mounted on one side of the workbench, for driving the forming rollers on the forming roller stand to rotate; A quick-change device is provided between the driving mechanism and the workbench, wherein the quick-change device is provided with a linkage shaft that is transmission-connected to the driving end of the driving mechanism, and the linkage shaft is detachably connected to the rotating shaft of the forming roller; The quick-change device comprises: A base, fixedly mounted between the workbench and the drive mechanism, with a mounting bracket mounted on the base, the mounting bracket having the freedom to slide on the base toward or away from the workbench; A linkage shaft is rotatably arranged on the base, the axis of the linkage shaft is arranged along the sliding direction of the mounting frame, and one end of the linkage shaft close to the driving mechanism is provided with a connecting portion for transmission connection with the transmission shaft of the driving mechanism; A connecting sleeve is fixedly mounted on one end of the linkage shaft close to the workbench, the connecting sleeve is coaxial with the linkage shaft, and an anti-rotation edge is provided inside the connecting sleeve; A connecting rod is detachably connected to the connecting sleeve, the connecting rod is drivingly connected to the rotating shaft of the forming roller, the connecting rod can slide into the interior of the connecting sleeve, and the connecting rod is provided with a limiting edge that slides with the anti-rotation edge; An anti-rotation key is installed inside the connecting sleeve, the anti-rotation edge is located on the anti-rotation key, and two pressing keys for pressing the anti-rotation key against the inner wall of the connecting sleeve are arranged at intervals inside the connecting sleeve; The anti-rotation key is provided with a connecting portion connected to the pressure key, and the anti-rotation key is provided with a makeshift groove for avoiding the pressure key. The side of the connecting portion close to the pressure key is an inclined surface, and the inclined surface is gradually inclined in the direction away from the axis of the connecting sleeve toward the direction close to the pressure key. The pressure key is provided with an extrusion surface arranged parallel to the inclined surface.

2. The multifunctional production line according to claim 1, characterized in that: The driving mechanism comprises: a fixed platform, mounted on one side of the workbench; A transmission shaft is rotatably mounted on the fixed platform, wherein the axis of the transmission shaft is arranged along the conveying direction of the tube body; There are multiple transmission assemblies, and the input ends of the multiple transmission assemblies are transmission-connected to the transmission shaft, and the output shaft of the transmission assembly is transmission-connected to the input end of the quick-change device.

3. The multifunctional production line according to claim 2, characterized in that: The transmission shaft is formed by connecting a plurality of connecting shafts end to end, and the plurality of connecting shafts are coaxially arranged with each other, and the connecting shafts correspond to the transmission components one by one.

4. The multifunctional production line according to claim 1, characterized in that: A flange is provided between the linkage shaft and the transmission shaft of the drive mechanism. There are two flanges, which are coaxially arranged and respectively fixed on the linkage shaft and the transmission shaft of the drive mechanism. A reinforcement key is also provided between the two flanges, and the length direction of the reinforcement key is arranged along the radial direction of the flange.

5. The multifunctional production line according to claim 1, characterized in that: A plurality of forming roller frames are arranged on the placement table, and a positioning pin is fixedly installed on the bottom of the placement table, and a positioning hole that is slidably matched with the positioning pin is provided on the workbench.

6. The multifunctional production line according to claim 1, characterized in that: A cooling water trough is also provided behind the output port of the welding mechanism. The end of the cooling water trough is detachably connected to a guide plate. The guide plate is provided with a guide hole that matches the shape of the tube body. The guide hole is connected to the interior of the cooling water trough.

7. The multifunctional production line according to claim 6, characterized in that: A support guide plate is provided at the bottom of the cooling water trough, and the support guide plate is gradually inclined downward along the conveying direction of the pipe body.

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