A welding device for producing drainage pipes

Abstract

A welding device for producing and manufacturing drain pipes comprises a frame, a drain pipe fixing device, a drain pipe limiting device, an alignment device, a welding device, a driving device and a control end; the frame comprises a fixed plate and a movable plate; there are two movable plates, which are symmetrical on the left and right and are slidably connected to the fixed plate; there are two drain pipe fixing devices, which are fixedly mounted to one movable plate respectively; the drain pipe limiting device is fixedly connected to an arc-shaped slide arranged at the central axis position of the fixed plate; the alignment device is mounted on the fixed plate; the two movable plates are driven by the alignment device and slide synchronously toward or oppositely along the fixed plate with the drain pipe limiting device as the center; the welding device is mounted on the fixed plate; the present invention can not only replace manual welding of drain pipes, but also can firmly clamp the drain pipes, and at the same time the drain pipe and the welder can realize synchronous reverse rotation, which greatly reduces the safety hazards of operators while realizing automation and high efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of drainage pipe welding, in particular to a welding device for producing drainage pipes. Background Art

[0002] Drainage pipes are mainly responsible for draining rainwater, sewage, farmland irrigation and drainage. Most drainage pipes are made of plastic and have the characteristics of drainage safety, corrosion resistance and high external pressure strength. In actual production, drainage pipes need to be welded to increase their length.

[0003] Among the existing technologies, the Chinese utility model application number CN202221235036.4 discloses a welding device for PVC pipe production that is easy to position. The two clamping plates are brought close to each other to clamp and fix the pipes on the placement plate, thereby facilitating the clamping and fixing of pipes of different diameters, improving its overall practicality, and having relatively low limitations on use. It includes a workbench, the top of the workbench is fixedly connected to two support rods, the top of the support rods is fixedly connected to the placement plate, two strip grooves are provided inside the placement plate, a T-shaped slider is slidably provided in the strip groove, the top of the T-shaped slider is fixedly connected to the clamping plate, the ends of the clamping plates away from each other are fixedly connected to a connecting rod, the bottom end of the connecting rod is fixedly connected to the support rod, four connecting grooves are provided inside the workbench, the four connecting grooves are divided into two groups, and connecting blocks are slidably provided in the two connecting grooves on the same side, and the top of the connecting block is fixedly connected to the bottom end of the support rod.

[0004] Although the above patents achieve the functions of fixing and welding pipes of different diameters, the double-plate structure easily causes the pipes to slip and the welding efficiency is low, which brings great inconvenience to the operation process.

[0005] Therefore, it is necessary to invent a welding device for producing drainage pipes that can firmly clamp pipes and have high-efficiency welding functions. Summary of the Invention

[0006] In view of the above problems, the present invention proposes a welding device for manufacturing drainage pipes, the technical solution used is:

[0007] A welding device for producing and manufacturing drain pipes comprises a frame, a drain pipe fixing device, a drain pipe limiting device, an alignment device, a welding device, a driving device and a control end; the frame comprises a fixed plate and a movable plate; there are two movable plates, which are symmetrical on both sides and are slidably connected to the fixed plate; there are two drain pipe fixing devices, each fixedly mounted on a movable plate, and driven by the driving device to achieve synchronous clamping and fixing of the respective drain pipes; the drain pipe limiting device is fixedly connected to an arc-shaped slide arranged at the central axis position of the fixed plate, and is used for installation and limitation of the two drain pipes; the alignment device is mounted on the fixed plate; the two movable plates are driven by the alignment device to slide synchronously toward or oppositely along the fixed plate with the drain pipe limiting device as the center; the welding device is mounted on the fixed plate, and is used for welding the joints of the two drain pipes;

[0008] The control end is used to control the operation of the entire drainage pipe manufacturing welding device.

[0009] Furthermore, each of the drainage pipe fixing devices includes a fixing mechanism and a tension spring group; there are two fixing mechanisms, which are symmetrically arranged on the corresponding movable plates, and the tension spring group is installed between the two fixing mechanisms.

[0010] Furthermore, each of the fixing mechanisms includes a push plate, a swivel, a push rod, a centering arc plate, a calibration ring and a rubber sleeve; the calibration ring is rotatably mounted on the movable plate; the centering arc plate is longitudinally slidably mounted in the calibration ring along the radial direction with the axis of the calibration ring as the center; a rubber sleeve is correspondingly installed at the front end of the centering arc plate; the swivel is slidably and rotatably mounted in the movable plate; at least three push rods are evenly distributed laterally on one side of the swivel, and the other side is fixedly connected to the tension spring group; the push rods are respectively slidably connected to the centering arc plates at corresponding positions; the push plate is horizontally slidably connected to the Z-groove of the movable plate, and the push plate is slidably connected to the swivel for pushing the swivel to slide outward; when driven by the driving device, the swivel drives the push rod to push the centering arc plate toward the center of the drain pipe and fix the drain pipe.

[0011] Furthermore, the drain pipe limiting device also includes a limiting motor, a limiting screw and a limiting plate; the limiting motor is fixedly installed on the fixed plate; one end of the limiting screw is installed on the output shaft of the limiting motor, and the other end is threadedly connected to the limiting plate; the limiting plate is slidably installed on the fixed plate; the limiting screw is driven by the limiting motor to extend the limiting plate to achieve positioning of the drain pipe.

[0012] Furthermore, the alignment device includes an alignment motor and an alignment screw; the alignment screw (402) is rotatably mounted on a fixed plate and corresponds to the position of the drain pipe limiting device, and both ends are respectively threadedly connected to the corresponding movable plates; the alignment screw is connected to the alignment motor through a pair of meshing cylindrical gears.

[0013] Furthermore, the alignment device also includes belt one; there are two alignment screws, which are symmetrically installed on both sides of the arc slide in front and back; the alignment screws rotate synchronously under the drive of belt one.

[0014] Furthermore, the welding device includes a rotating motor, a gear set, a rotating sleeve, a telescopic shaft, a welder and a rotating gear set; the inner surface of the rotating sleeve is slidably connected to the telescopic shaft; the rotating gear set is fixedly installed at both ends of the telescopic shaft; the rotating gear set is meshed with the teeth on the rotating ring; the rotating motor is installed on a fixed plate; the rotating motor is fixedly connected to the input end of the gear set; the outer surface of the rotating sleeve is rotatably installed on the fixed plate and is rotatably connected to the belt on the gear set; the welder is slidably installed on the arc slide and fixedly connected to the arc rack of the gear set; the rotating motor drives the gear set to rotate, so that the fixed drain pipe and the welder rotate in opposite directions, thereby realizing efficient welding of the drain pipe.

[0015] Furthermore, the welder includes a welding motor, a cylindrical gear, a hollow cylindrical gear, an adjusting screw, a welding head, a slider, a welding motor fixing frame and an adjusting frame; the welding motor and the cylindrical gear are installed on the welding motor fixing frame; the output end of the welding motor is fixedly connected to the input end of the cylindrical gear, so as to drive the cylindrical gear to rotate; the welding motor fixing frame is fixed on the slider; the adjusting screw and the adjusting frame are slidably installed on the slider; one end of the adjusting screw is rotatably connected to the adjusting frame, and the other end passes through the hollow cylindrical gear and the slider and is fixedly connected to the welding head; the inner surface of the hollow cylindrical gear is threadedly connected to the adjusting screw, and the outer surface is rotatably connected to the slider; the cylindrical gear and the hollow cylindrical gear are meshed and connected; the slider is slidably installed on the arc slide, and is fixedly connected to the side of one end of the arc rack of the gear set.

[0016] Furthermore, the driving device includes a driving motor, a transmission device and a gear rack assembly; the driving motor is fixedly mounted on the movable plate; the transmission device includes an input end and two output ends; the output shaft of the driving motor is fixedly connected to the input end of the transmission device; there are two gear rack assemblies, and each is arranged on the movable plate corresponding to a drain pipe fixing device; each gear rack assembly includes a gear and two racks that are meshed with the gear and are horizontally staggered with each other, wherein the gear is connected to one of the output ends of the transmission device, and the rack is fixedly connected to the corresponding push plate.

[0017] Furthermore, the gear set also includes output end one and output end two; the bevel gear of output end one is meshed and connected with the input end, and one end of the pulley is rotatably connected with the belt; the bevel gear of output end two is meshed and connected with the input end, and the cylindrical gear end is meshed and connected with the arc rack.

[0018] Since the present invention adopts the above technical solution, the present invention has the following advantages:

[0019] 1. The present invention uses the coordinated design of the drain pipe fixing device, the drain pipe limiting device and the alignment device, which can not only replace the manual welding of drain pipes, but also solve the problem of drain pipes slipping or deviation in the docking process. While achieving automation and high efficiency, it greatly improves the accuracy of welding.

[0020] 2. The cleaning device of the present invention realizes the synchronous opposite rotation of the drain pipe and the welder through the coordinated design of the drain pipe fixing device and the welding device, which not only greatly improves the welding efficiency but also has a simple structure and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1-3 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 4-6 It is a structural schematic diagram of the frame of the present invention.

[0023] Figure 7 For the present invention Figure 6 Schematic diagram of the locally enlarged structure at point A in the middle.

[0024] Figure 8 This is a schematic diagram of the assembly structure of the drainage pipe fixing device of the present invention.

[0025] Figure 9 This is a schematic diagram of the assembly structure of the drainage pipe limiting device of the present invention.

[0026] Figure 10 This is a schematic diagram of the assembly structure of the alignment device of the present invention.

[0027] Figure 11-12 This is a schematic diagram of the assembly structure of the welding device of the present invention.

[0028] Figure 13 For the present invention Figure 12 Schematic diagram of the local enlarged structure at point B in the middle.

[0029] Figure 14-15 Schematic diagram of the welding device structure of the present invention.

[0030] Figure 16 It is a schematic diagram of the assembly structure of the drive device in the present invention.

[0031] Figure 17 For the present invention Figure 16 Schematic diagram of the local enlarged structure at point C in the middle.

[0032] Figure Number:

[0033] 1- rack;

[0034] 101-fixed plate (101a-arc-shaped slide; 101b-mounting plate); 102-movable plate (102a-Z-shaped groove);

[0035] 2-Drain pipe fixture;

[0036] 201-Fixed mechanism (201a-push plate; 201b-swivel; 201c-push rod; 201d-centering arc plate; 201e-calibration ring; 201f-rubber sleeve); 202-tension spring assembly;

[0037] 3-Drain pipe limiting device;

[0038] 301-limiting motor; 302-limiting screw; 303-limiting plate;

[0039] 4-positioning device;

[0040] 401-alignment motor; 402-alignment screw; 403-belt 1;

[0041] 5-Welding device;

[0042] 501 - Rotating motor; 502 - Gear set (502a - Belt 2; 502b - Output end 1; 502c - Input end; 502d - Output end 2; 502e - Arc rack); 503 - Rotating shaft sleeve; 504 - Telescopic shaft; 505 - Welding device (505a - Welding motor; 505b - Cylindrical gear; 505c - Hollow cylindrical gear; 505d - Adjusting screw; 505e - Welding head; 505f - Slider; 505g - Welding motor mounting bracket; 505h - Adjusting bracket); 506 - Rotating gear set;

[0043] 6- driving device;

[0044] 601-driving motor; 602-transmission device; 603-gear rack assembly. DETAILED DESCRIPTION

[0045] The technical solution of the present invention will be further specifically described below through examples and in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0046] In the description of the present invention, it should be noted that the terms "up", "down", "in", "out", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0047] Example:

[0048] This embodiment is fixed on a plane and welds drain pipes of different diameters. Figure 1-13 A welding device for drain pipe production and manufacturing as shown in 16-17 includes a frame 1, a drain pipe fixing device 2, a drain pipe limiting device 3, an alignment device 4, a welding device 5, a driving device 6 and a control end; there are two drain pipe fixing devices 2, which are respectively fixedly installed on a movable plate 102 of the frame 1, and are driven by the driving device 6 to realize the synchronous clamping and fixing of each drain pipe; the drain pipe limiting device 3 is fixedly connected to the arc-shaped slide 101a set at the central axis position of the fixed plate 101, and is used for the installation and limiting of the two drain pipes; the alignment device 4 is installed on the fixed plate 101; the two movable plates 102 are driven by the alignment device 4 and slide synchronously toward or oppositely along the fixed plate 101 with the drain pipe limiting device 3 as the center; the welding device 5 is installed on the fixed plate 101 and is used to weld the joints of the two drain pipes; the control end is used to control the operation of the entire welding device for drain pipe production and manufacturing.

[0049] As a specific implementation of this embodiment, Figure 4-7 As shown, the frame 1 includes a fixed plate 101 and a movable plate 102; there are two movable plates 102, which are bilaterally symmetrical and slidably connected to the fixed plate 101 through slide rails; an arc-shaped slide 101a is provided on the fixed plate 101, and a z-shaped groove 102a is provided on the movable plate 102;

[0050] As a specific implementation of this embodiment, Figure 8 As shown, each drain pipe fixing device 2 includes a fixing mechanism 201 and a tension spring group 202; there are two fixing mechanisms 201, which are symmetrically arranged on the corresponding movable plates 102, and the tension spring group 202 is installed between the two fixing mechanisms 201; the two fixing mechanisms 201 move away from each other, driving the tension spring group 202 to be stretched, and when the two fixing mechanisms 201 return to their initial state, the tension spring group 202 drives the two fixing mechanisms 201 to move closer to each other.

[0051] Specifically, such as Figure 8As shown, each fixing mechanism 201 includes a push plate 201a, a rotating ring 201b, a push rod 201c, a centering arc plate 201d, a calibration ring 201e and a rubber sleeve 201f; the calibration ring 201e is rotatably mounted on an annular frame set on one side of the movable plate 102; the centering arc plate 201d is longitudinally slidably mounted in the calibration ring 201e along the radial direction with the axis of the calibration ring 201e as the center, and slides through the annular frame; a rubber sleeve 201f is correspondingly mounted on the front end of the centering arc plate 201d; the rotating ring 201b is slidably and rotatably mounted on a slip ring frame fixed in the middle of the movable plate 102; the rotating ring 201b is horizontally evenly distributed with three push rods 201c on one side facing the corresponding annular frame, and the other side is connected to the tension spring group 2 02 fixed connection; the centering arc plate 201d is provided with an oblique groove, and the push rod 201c is respectively slidably connected to the centering arc plate 201d at the corresponding position through the oblique groove; the Z-shaped groove 102a is horizontally fixedly installed on the rear side of the slip ring frame, and a sliding groove is provided on it in parallel, and a corresponding avoidance is provided on the slip ring frame; the push plate 201a is horizontally slidably connected to the Z-shaped groove 102a of the movable plate 102, and the push plate 201a passes through the avoidance and is slidably connected to the swivel 201b, used to push the swivel 201b to slide outward; the push plate 201a is driven by the driving device 6 to push the swivel 201b to move to both sides, and the push rod 201c on the swivel 201b pushes the centering arc plate 201d to move toward the center of the drain pipe and fix the drain pipe;

[0052] In this embodiment, a pressure sensor (not shown in the figure) is installed at the front end of the centering arc plate 201d, and the pressure sensor is electrically connected to the control end. In the process of the fixing mechanism 201 driving the three centering arc plates 201d to move toward the center through the push plate 201a, when the drain pipe is clamped and the pressure sensor detects that the pressure reaches a certain set value, the driving device 6 stops running and the drain pipe is fixed.

[0053] As a specific implementation of this embodiment, Figure 9 As shown, the drain pipe limiting device 3 also includes a limiting motor 301, a limiting screw 302 and a limiting plate 303; the limiting motor 301 is horizontally fixedly installed on the mounting plate 101b on the fixed plate 101; one end of the limiting screw 302 is installed on the output shaft of the limiting motor 301, and the other end is threadedly connected to the limiting plate 303; the limiting plate 303 is slidably installed on the mounting plate 101b; the limiting screw 302 is driven by the limiting motor 301 to extend the limiting plate 303 to achieve positioning of the drain pipe; in this embodiment, the limiting motor 301 is a servo motor.

[0054] As a specific implementation of this embodiment, Figure 10As shown, the alignment device 4 includes an alignment motor 401, an alignment screw 402 and a belt 1 403; the alignment screw 402 has a bidirectional thread; the alignment screw 402 is rotatably installed on the fixed plate 101, and corresponds to the position of the drain pipe limit device 3, and the two ends are respectively threadedly connected to the corresponding movable plate 102; there are two alignment screws 402, and they are symmetrically installed on both sides of the arc slide 101a front and back; two gaps are vertically penetrated through the bottom of the arc slide 101a, and the two alignment screws 402 are connected by a belt 1 403 passing through the two gaps to achieve synchronous rotation; one of the alignment screws 402 is connected to the alignment motor 401 through a pair of meshing cylindrical gears; the alignment motor 401 drives one alignment screw 402 to rotate under the transmission of a pair of meshing cylindrical gears, and the other alignment screw 402 achieves synchronous rotation under the transmission of belt 1 403, and the rotation of the two alignment screws 402 drives the two movable plates 102 to move toward the center of the frame 1.

[0055] As a specific implementation of this embodiment, Figure 11-13 As shown, the welding device 5 includes a rotating motor 501, a gear set 502, a rotating shaft sleeve 503, a telescopic shaft 504, a welder 505 and a rotating gear set 506; the inner surface of the rotating shaft sleeve 503 is slidably connected to the telescopic shaft 504; the rotating gear sets 506 are fixedly installed at both ends of the telescopic shaft 504; a gap avoider is provided on the slip ring frame fixedly arranged in the middle of the movable plate 102, and the rotating gear set 506 passes through the gap avoider and is engaged with the teeth on the rotating ring 201b; the rotating motor 501 is installed on the fixed plate 101; the output end of the rotating motor 501 is fixedly connected to the input end 502c of the gear set 502; The outer surface of the moving shaft sleeve 503 is rotatably mounted on the fixed plate 101 and is rotatably connected to the belt 502a on the gear set 502; the welder 505 is slidably mounted on the arc-shaped slide 101a and is fixedly connected to the arc-shaped rack 502e of the gear set 502; the rotating motor 501 drives the gear set 502 to rotate, and the gear set 502 simultaneously drives the telescopic shaft 504 and the welder 505 to work, and the telescopic shaft 504 drives the swivel 201b engaged with the rotating gear set 506 to rotate, so that the drain pipe fixed by the drain pipe fixing device 2 and the welder 505 rotate in opposite directions, thereby realizing efficient welding of the drain pipe.

[0056] Specifically, such as Figure 13 As shown, the gear set 502 also includes an output end 1 502b and an output end 2 502d; the output end 1 502b is composed of a bevel gear and a pulley fixedly connected, wherein the bevel gear is meshed with the input end 502c, and one end of the pulley is rotatably connected to the belt 502a; the output end 2 502d is composed of a bevel gear and a cylindrical gear fixedly connected, wherein the bevel gear is meshed with the input end 502c, and the cylindrical gear is meshed with the arc rack 502e.

[0057] Specifically, such as Figure 14-15 As shown, the welder 505 includes a welding motor 505a, a cylindrical gear 505b, a hollow cylindrical gear 505c, an adjusting screw 505d, a welding head 505e, a slider 505f, a welding motor fixing frame 505g and an adjusting frame 505h; the welding motor 505a and the cylindrical gear 505b are installed on the welding motor fixing frame 505g; the output end of the welding motor 505a is fixedly connected to the input end of the cylindrical gear 505b, so as to drive the cylindrical gear 505b to rotate; the welding motor fixing frame 505g is fixed on the slider 505f; the adjusting screw 505d and the adjusting frame 505h are slidably installed on the slider 505f; one end of the adjusting screw 505d is rotatably connected to the adjusting frame 505h, and the other end passes through the hollow cylindrical gear 505c, the slider 505f and is fixedly connected to the welding head 505e; the arc-shaped slide 1 An arc-shaped gap four is provided on the upper part of 01a, which corresponds to the joint of the two drain pipes and is in the shape of a concentric circle of the drain pipe. The adjusting frame 505h passes through the gap four to make the welding head 505e contact the outer surface of the drain pipe; the inner surface of the hollow cylindrical gear 505c is threadedly connected with the adjusting screw 505d, and the outer surface is rotatably connected with the slider 505f; the cylindrical gear 505b and the hollow cylindrical gear 505c are meshed and connected; the slider 505f is slidably installed on the arc-shaped slide 101a and is fixedly connected to the side of one end of the arc-shaped rack 502e of the gear set 502; the welding motor 505a drives the cylindrical gear 505b to rotate, and the cylindrical gear 505b drives the hollow cylindrical gear 505c to rotate, so that the adjusting screw 505d and the adjusting frame 505h move up and down in the slider 505f, thereby driving the welding head 505e to contact the drain pipe joint.

[0058] As a specific implementation of this embodiment, Figure 16-17As shown, the driving device 6 includes a driving motor 601, a transmission device 602 and a gear rack assembly 603; the driving motor 601 is fixedly mounted on the movable plate 102; the transmission device 602 includes an input end and two output ends; the output shaft of the driving motor 601 is fixedly connected to the input end of the transmission device 602; there are two gear rack assemblies 603, and each is arranged on the movable plate 102 corresponding to a drain pipe fixing device 2; each gear rack assembly 603 includes a gear and two racks that mesh with the gears and are horizontally staggered with each other, wherein the gear is connected to one of the output ends of the transmission device 602, and the rack is fixedly connected to the corresponding push plate 201a; in this embodiment, the input end of the transmission device 602 is an input bevel gear; one of the two output ends of the transmission device 602 is a first output bevel gear, which is coaxially fixedly connected to the gear in the corresponding gear rack assembly 603, and the other output end consists of a second output bevel gear and a belt tensioning assembly The belt tensioning assembly comprises two belts, three pulleys and a tension return spring, wherein the first and second pulleys are each rotatably mounted on a movable plate 102, the third pulley is slidably arranged on the fixed plate 101, and is connected to one end of the tension return spring, and the other end of the tension return spring is connected to the fixed plate 101; the second belt is mounted on three pulleys, and the first pulley is coaxially fixedly connected to the corresponding second output bevel gear, and the second pulley is coaxially fixedly connected to the gear in another rack and pinion assembly 603; the driving motor 601 drives the input end of the transmission device 602, thereby driving the two output ends of the transmission device 602 to rotate, and then driving the racks in the two rack and pinion assemblies 603 to move synchronously, and finally making each fixing mechanism 201 in the two drain pipe fixing devices 2 work synchronously to complete the clamping of the drain pipes at both ends; then during the movement of the two movable plates 102, the belt two in the belt tensioning assembly is kept in a tensioned state at all times by the tension return spring.

[0059] In this embodiment, the control end can be a separate control cabinet or a control cabinet integrated on the fixed plate 101 (not shown in the figure); this control end includes a human-computer interactive display screen for inputting instruction programs, parameter codes, and real-time display of operating parameters of various mechanisms and devices.

[0060] The working steps of this embodiment are as follows:

[0061] Step 1: The welding device for manufacturing drainage pipes of this embodiment is fixedly mounted on a plane so that the fixed plate 101 of the frame is stationary and the movable plate 102 can slide on the fixed plate 101;

[0062] In the second step, the operator operates the control terminal to slide the movable plate 102 back to its initial position away from the mounting plate 101b, and slide the limit plate 303 to its initial position close to the mounting plate 101b. The fixing mechanism 201 is adjusted to its maximum diameter, and the welder 505 is adjusted to the end closest to the rotating motor 501. After completing the above steps, the two drain pipes are respectively passed through the two drain pipe fixing devices 2 until the cross-section of the drain pipes contacts the limit plate 303.

[0063] In the third step, the operator operates the control end while observing the external situation, and drives the push plates 201a of the two fixing mechanisms 201 to slide in opposite directions through the drive device 6. The push plates push the rotating ring to slide, and the push rod on the rotating ring pushes the centering arc plate downward. When the three centering arc plates are pressed down to the drain pipe, the rubber sleeve contacts the centering arc plate. When the pressure sensor installed under the rubber sleeve detects that the pressure reaches the set value, the control end issues a command to stop the drive device 6.

[0064] In the third step, the operator operates the control terminal while observing the external situation, and drives the limit motor 301 to rotate the limit screw 302, causing the limit plate 303 to slide away from the arc-shaped slide 101a for a set distance and then stop, so that the limit plate 303 does not interfere with the movement of the drainage pipes on both sides toward each other;

[0065] In the fourth step, the operator operates the control end while observing the external situation. The alignment motor 401 drives one of the alignment screws 402 to rotate through a pair of meshing cylindrical gears. The other alignment screw 402 is driven by the belt 1 403 to achieve synchronous rotation of the two alignment screws 402. Driven by the alignment screws 402, the two movable plates 102 move a set distance toward the center of the frame 1, so that the interfaces of the two drainage pipes touch at the center of the frame.

[0066] In the fifth step, the operator sets the parameters of the welding device on the human-machine interactive display screen based on the known diameter of the drain pipe. The rotating motor 501, driven by the gear set 502, causes the telescopic shaft 504 and the welder 505 to move toward each other. The telescopic shaft drives the rotating gear set 506 to rotate. The rotating gear set 506 meshes with the rotating ring 201b, driving the drain pipe fixing device 2 to rotate, thereby achieving efficient welding.

[0067] Step 6. After completing steps 1 to 5, the operator operates the control end while observing the external situation to move the welder 505 away from the drain pipe. The driving device 6 drives the two fixing mechanisms 201 in each drain pipe fixing device 2 to move closer to each other, thereby releasing the fixation of the drain pipe by the drain pipe fixing device 2 and taking out the welded drain pipe.

[0068] The above steps complete the welding of the drain pipe.

Claims

1. A welding device for manufacturing drainage pipes, characterized in that: It comprises a frame (1), a drainage pipe fixing device (2), a drainage pipe limiting device (3), a positioning device (4), a welding device (5), a driving device (6) and a control end; The frame (1) comprises a fixed plate (101) and a movable plate (102); there are two movable plates (102), the two movable plates (102) are bilaterally symmetrical and are slidably connected to the fixed plate 101; There are two drainage pipe fixing devices (2), each fixedly mounted on a movable plate (102), and driven by a driving device (6) to achieve synchronous clamping and fixing of the respective drainage pipes; the drainage pipe limiting device (3) is fixedly connected to an arc-shaped slide (101a) provided at the central axis position of the fixed plate (101), and is used for the installation and limiting of the two drainage pipes; the alignment device (4) is mounted on the fixed plate (101); the two movable plates (102) are driven by the alignment device (4) to synchronously slide toward or in opposite directions along the fixed plate (101) with the drainage pipe limiting device (3) as the center; the welding device (5) is mounted on the fixed plate (101), and is used for welding the joints of the two drainage pipes; Each of the drainage pipe fixing devices (2) comprises a fixing mechanism (201) and a tension spring group (202); there are two fixing mechanisms (201), which are symmetrically arranged on corresponding movable plates (102), and the tension spring group (202) is installed between the two fixing mechanisms (201); Each fixing mechanism (201) comprises a push plate (201a), a rotating ring (201b), a push rod (201c), a centering arc plate (201d), a calibration ring (201e) and a rubber sleeve (201f); the calibration ring (201e) is rotatably mounted on the movable plate (102); the centering arc plate (201d) is longitudinally slidably mounted in the calibration ring (201e) along the radial direction with the axis of the calibration ring (201e) as the center; a rubber sleeve (201f) is correspondingly mounted on the front end of the centering arc plate (201d); the rotating ring (201b) is slidably and rotatably mounted in the movable plate (102); at least three push rods are evenly distributed laterally on one side of the rotating ring (201b). (201c), and the other side is fixedly connected to the tension spring group (202); the centering arc plate (201d) is provided with an inclined groove, and the push rod (201c) is respectively slidably connected to the centering arc plate (201d) at the corresponding position through the inclined groove; the push plate (201a) is horizontally slidably connected to the Z-shaped groove (102a) of the movable plate (102), and the push plate (201a) is slidably connected to the rotating ring (201b) for pushing the rotating ring (201b) to slide outward; the push plate (201a) is driven by the driving device (6), so that the rotating ring (201b) drives the push rod (201c) to push the centering arc plate (201d) to move toward the center of the drainage pipe and fix the drainage pipe; The control end is used to control the operation of the entire drainage pipe manufacturing welding device.

2. A welding device for manufacturing drainage pipes according to claim 1, characterized in that: The drain pipe limiting device (3) further comprises a limiting motor (301), a limiting screw (302) and a limiting plate (303); the limiting motor (301) is fixedly mounted on the fixing plate (101); one end of the limiting screw (302) is mounted on the output shaft of the limiting motor (301), and the other end is threadedly connected to the limiting plate (303); the limiting plate (303) is slidably mounted on the fixing plate (101); the limiting screw (302) is driven by the limiting motor (301) to extend the limiting plate (303) to achieve positioning of the drain pipe.

3. A welding device for manufacturing drainage pipes according to claim 1, characterized in that: The alignment device (4) comprises an alignment motor (401) and an alignment screw (402); the alignment screw (402) is rotatably mounted on the fixed plate (101) and corresponds to the position of the drain pipe limiting device (3), and both ends are respectively threadedly connected to the corresponding movable plates (102); the alignment screw (402) is connected to the alignment motor (401) via a pair of meshing cylindrical gears.

4. A welding device for manufacturing drainage pipes according to claim 3, characterized in that: The alignment device (4) further includes a belt (403); the alignment screws (402) are two in number and are symmetrically mounted on both sides of the arc-shaped slide (101a) in a front-to-back manner; the alignment screws (402) are driven by the belt (403) to achieve synchronous rotation.

5. A welding device for manufacturing drainage pipes according to claim 1, characterized in that: The welding device (5) comprises a rotating motor (501), a gear set (502), a rotating shaft sleeve (503), a telescopic shaft (504), a welder (505) and a rotating gear set (506); the inner surface of the rotating shaft sleeve (503) and the telescopic shaft (504) are slidably connected; the rotating gear sets (506) are fixedly mounted at both ends of the telescopic shaft (504); the rotating gear set (506) and the teeth on the rotating ring (201b) are meshed and connected; the rotating motor (501) is mounted on a fixed plate (101); the rotating motor (501) The rotating shaft sleeve (503) is fixedly connected to the input end (502c) of the gear set (502); the outer surface of the rotating shaft sleeve (503) is rotatably mounted on the fixed plate (101) and is rotatably connected to the belt (502a) on the gear set (502); the welder (505) is slidably mounted on the arc-shaped slide (101a) and is fixedly connected to the arc-shaped rack (502e) of the gear set (502); the rotating motor (501) drives the gear set (502) to rotate, causing the fixed drain pipe and the welder (505) to rotate in opposite directions, thereby achieving efficient welding of the drain pipe.

6. A welding device for manufacturing drainage pipes according to claim 5, characterized in that: The welder (505) comprises a welding motor (505a), a cylindrical gear (505b), a hollow cylindrical gear (505c), an adjusting screw (505d), a welding head (505e), a slider (505f), a welding motor fixing frame (505g), and an adjusting frame (505h); the welding motor (505a) and the cylindrical gear (505b) are mounted on the welding motor fixing frame (505g); the output end of the welding motor (505a) is fixedly connected to the input end of the cylindrical gear (505b) for driving the cylindrical gear (505b) to rotate; the welding motor fixing frame (505g) is fixed on the slider (505f); the adjusting screw (505d) , the adjustment frame (505h) is slidably mounted on the slider (505f); one end of the adjustment screw rod (505d) is rotatably connected to the adjustment frame (505h), and the other end passes through the hollow cylindrical gear (505c), the slider (505f) and is fixedly connected to the welding head (505e); the inner surface of the hollow cylindrical gear (505c) is threadedly connected to the adjustment screw rod (505d), and the outer surface is rotatably connected to the slider (505f); the cylindrical gear (505b) and the hollow cylindrical gear (505c) are meshed and connected; the slider (505f) is slidably mounted on the arcuate slide (101a) and is fixedly connected to the side surface of one end of the arcuate rack (502e) of the gear set (502).

7. A welding device for manufacturing drainage pipes according to claim 1, characterized in that: The driving device (6) comprises a driving motor (601), a transmission device (602) and a gear rack assembly (603); the driving motor (601) is fixedly mounted on the movable plate (102); the transmission device (602) comprises an input end and two output ends; the output shaft of the driving motor (601) is fixedly connected to the input end of the transmission device (602); there are two gear rack assemblies (603), each of which is arranged on the movable plate (102) in correspondence with a drain pipe fixing device (2); each of the gear rack assemblies (603) comprises a gear and two racks meshing with the gear and arranged horizontally and staggered with each other, wherein the gear is connected to one of the output ends of the transmission device (602), and the rack is fixedly connected to the corresponding push plate (201a).

8. A welding device for manufacturing drainage pipes according to claim 5, characterized in that: The gear set (502) further includes an output end 1 (502b) and an output end 2 (502d); the bevel gear of the output end 1 (502b) is meshedly connected with the input end (502c), and one end of the pulley is rotationally connected with the belt (502a); the bevel gear of the output end 2 (502d) is meshedly connected with the input end (502c), and the cylindrical gear end is meshedly connected with the arc rack (502e).

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