Welding equipment and pipe fitting welding method

Abstract

The embodiment of the invention provides welding equipment and a pipe fitting welding method, and relates to the field of endoscopes. The welding equipment comprises a mounting frame, a plurality of pipe fitting clamping devices and a plurality of connecting piece clamping devices, the pipe fitting clamping devices are arranged on one side of the mounting frame side by side at intervals, the connecting piece clamping devices are arranged on the other side of the mounting frame side by side at intervals, and the connecting piece clamping devices correspond to the pipe fitting clamping devices respectively. And the threaded pipe can penetrate through the mounting frame and extend to the connecting piece clamping device. The welding equipment is provided with the multiple pipe fitting clamping devices and the multiple connecting piece clamping devices, the multiple pipe fitting clamping devices can clamp the multiple threaded pipes at the same time, the multiple connecting piece clamping devices can fix the multiple connecting pieces at the same time, batch welding operation can be achieved, the welding speed is high, and the welding efficiency is high. The embodiment of the invention further provides a welding method. The welding device can be used for welding the threaded pipe and the connecting piece.

Description

Technical Field

[0001] The present invention relates to the field of endoscopes, and in particular to a welding device and a pipe welding method. Background Art

[0002] As an important auxiliary medical instrument, endoscope is widely used in various surgical operations. It contains a slender insertion tube that can enter the human body through natural orifices or small surgical incisions.

[0003] The insertion tube typically contains a wire drive structure, including a snake, a threaded tube, and a wire for controlling the snake's rotation. In existing designs, the snake's end is typically terminated by a slotted tubular connector (hereinafter referred to as the connector). The threaded tube is welded to the slotted connector. Currently, welding the threaded tube to the connector is performed manually, requiring only one threaded tube and connector at a time. This results in slow welding speeds and low efficiency. Summary of the Invention

[0004] The present invention provides a welding device and a pipe welding method, which can weld threaded pipes and connectors in batches and improve welding speed and welding efficiency.

[0005] The embodiments of the present invention can be implemented as follows: An embodiment of the present invention provides a welding device, comprising: Mounting rack; Multiple pipe clamping devices are arranged at intervals and in parallel on one side of the mounting frame, and the pipe clamping devices can be used to clamp threaded pipes; Multiple connector clamping devices are arranged at intervals and in parallel on the other side of the mounting frame. The multiple connector clamping devices correspond to the multiple pipe clamping devices respectively, and the threaded pipe can pass through the mounting frame and extend to the connector clamping device.

[0006] Optionally, the connector clamping device includes a core shaft, a sleeve and a cover, the sleeve is connected to the end face of the core shaft, a welding groove is provided on the sleeve, the sleeve is used to sleeve the connector, the cover is sleeved on the outside of the core shaft, and the cover is used to push the connector to move; the threaded tube passes through the core shaft and extends to the welding groove, and the connector is welded to the threaded tube.

[0007] Optionally, an anti-slip component is provided between the core shaft and the sleeve cover, and the anti-slip component is used to prevent the sleeve cover from slipping off the core shaft.

[0008] Optionally, the pipe clamping device includes a sleeve clamp, an elastic ring and a cover plate, the sleeve clamp and the elastic ring are arranged on the outside of the core shaft, the cover plate is connected to the core shaft, a pin is provided on the cover plate, the sleeve clamp has a limiting slide groove, and the pin is slidably set in the limiting slide groove; by rotating the sleeve clamp and the elastic ring, the sleeve clamp and the elastic ring clamp or disengage the threaded pipe.

[0009] Optionally, the welding equipment further comprises a transmission assembly, the transmission assembly being used to drive the multiple connection piece clamping devices to move synchronously; The transmission assembly includes a first driving member, a driving wheel and a rack. The driving wheel is connected to the output end of the first driving member and meshes with the rack. A driven wheel is fixed on the core shaft of the connecting member clamping device and meshes with the rack.

[0010] Optionally, both ends of the rack are provided with a stopper, and the stopper is used to limit the movement range of the rack.

[0011] Optionally, the welding device further comprises a feeding device for supplying threaded pipes to the plurality of pipe clamping devices; The feeding device includes multiple first limiting wheels and multiple second limiting wheels, and the multiple first limiting wheels correspond to the multiple second limiting wheels respectively and the wheel surfaces are connected. The first limiting wheels and the second limiting wheels are both provided with wheel surface grooves, and the threaded tube is limited in the wheel surface grooves. The rotation of the first limiting wheel and / or the second limiting wheel can drive the threaded tube to move along the wheel surface groove.

[0012] Optionally, the feeding device further includes a guide member, which is disposed between the feeding device and the pipe clamping device, and is used to guide the multiple threaded pipes.

[0013] Optionally, the welding equipment further includes a quality inspection device for detecting the welding quality of the threaded pipe and the connector.

[0014] An embodiment of the present invention further provides a pipe welding method, which uses the above-mentioned welding equipment to weld a threaded pipe and a connector, comprising the following steps: Passing a plurality of threaded pipes through a plurality of pipe clamping devices respectively, and extending the ends of the threaded pipes to predetermined positions of the connector clamping devices; Installing the plurality of connectors to the plurality of connector clamping devices respectively, and adjusting the welding positions of the connectors to correspond to the welding positions of the threaded pipes; The pipe clamping device clamps the threaded pipe, and the connector clamping device fixes the connector; Start the welding machine and weld multiple connectors and multiple threaded pipes simultaneously; Remove the welded product and repeat the above steps for the next round of welding.

[0015] Beneficial effects of the embodiments of the present invention: The welding equipment includes a mounting frame, a plurality of pipe clamping devices, and a plurality of connector clamping devices. The plurality of pipe clamping devices are arranged in parallel and spaced apart on one side of the mounting frame, and the plurality of connector clamping devices are arranged in parallel and spaced apart on the other side of the mounting frame. The plurality of connector clamping devices correspond to the plurality of pipe clamping devices, respectively, and the threaded pipe can extend through the mounting frame to the connector clamping device. The welding equipment of the embodiment of the present invention is provided with a plurality of pipe clamping devices and a plurality of connector clamping devices. The plurality of pipe clamping devices can simultaneously clamp a plurality of threaded pipes, and the plurality of connector clamping devices can simultaneously fix a plurality of connectors. When the plurality of threaded pipes correspond to the plurality of connectors one by one, the welding machine can be started to weld the plurality of threaded pipes and the plurality of connectors simultaneously, which can realize batch welding operations, fast welding speed, and high welding efficiency.

[0016] The pipe welding method includes passing multiple threaded pipes through multiple pipe clamping devices, and extending the ends of the threaded pipes to predetermined positions of the connector clamping devices; installing multiple connectors on the multiple connector clamping devices, and adjusting the welding positions of the connectors to correspond to the welding positions of the threaded pipes; the pipe clamping devices clamp the threaded pipes, and the connector clamping devices secure the connectors; starting the welding machine and welding the multiple connectors to the multiple threaded pipes simultaneously; removing the welded products, and repeating the above steps for the next round of welding. This welding method can simultaneously weld multiple threaded pipes and multiple connectors, with high welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the overall structure of a welding device provided in an embodiment of the present invention; Figure 2 Schematic diagram of the arrangement of the pipe clamping device, the connector clamping device and the transmission assembly provided in an embodiment of the present invention; Figure 3 A schematic diagram of the cooperation between the transmission assembly and the connector clamping device provided in an embodiment of the present invention; Figure 4 This is a schematic structural diagram of a connector clamping device provided in an embodiment of the present invention being arranged on a core shaft; Figure 5 For the Figure 4 A schematic diagram of the axial section of the middle threaded tube; Figure 6This is a schematic structural diagram of a pipe clamping device provided in an embodiment of the present invention being arranged on a core shaft; Figure 7 For the Figure 6 Schematic diagram of the radial cross section where the elastic ring is located.

[0019] Icons: 1-mounting frame; 10-housing; 11-detector; 2-pipe clamping device; 20-clamp; 201-limiting slide; 202-gear; 21-elastic ring; 22-cover; 23-tooth row; 24-second driving member; 3-connector clamping device; 30-mandrel; 301-through hole; 302-driven wheel; 31-head; 311-welding groove; 32-cover; 4-transmission assembly; 40-first driving member Parts; 41-driving wheel; 42-rack; 43-stopper; 431-stop arm; 432-long slot; 433-locking member; 44-pressing rod; 5-feeding device; 50-frame; 51-first limiting wheel; 511-wheel surface groove; 52-second limiting wheel; 53-transmission shaft; 54-third driving member; 55-guide member; 7-punching mechanism; 70-punching upper die; 71-punching lower die; 8-threaded tube; 9-connecting member. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0023] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0025] The terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0026] Unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be interpreted broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] It should be noted that for the aforementioned various method embodiments, for simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that this application is not limited by the order of the actions described, because according to this application, some steps can be performed in other orders or simultaneously. The steps in the method embodiments of this application can be adjusted in order, combined, or deleted according to actual needs.

[0028] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0029] Endoscopes, as an essential auxiliary medical instrument, are widely used in various surgical procedures. They consist of a slender insertion tube that can be inserted into the body through natural orifices or small surgical incisions. To ensure smooth insertion and delivery of the tube along its designated path to the diagnostic and treatment site, the tube typically incorporates a wire drive mechanism, including a serpentine, a threaded tube, and a wire to control the serpentine's direction. The threaded tube's tail end is fixedly connected to the end of the serpentine (or to a connecting ring that fits over the serpentine). The wire is embedded within the threaded tube and serpentine and welded to the serpentine's tail end. The threaded tube provides both support and guidance, providing a rigid structure for the tube. When the wire is pulled, only the serpentine bends, not the tube. It also controls the wire's trajectory and directs the bend, helping the endoscope's serpentine to twist and bend smoothly. An unstable and slippery connection between the threaded tube and the serpentine (or to the connecting ring that fits over the serpentine) can affect the proper function of the endoscope.

[0030] The tubular snake-bone end or the connecting ring that fits over the snake-bone end forms a tubular connector (hereinafter referred to as the connector). The connector is provided with a slot, and the threaded pipe is welded to the slot of the connector. Currently, welding the threaded pipe to the connector is done manually, and only one threaded pipe and one connector can be welded at a time, resulting in slow welding speed and low welding efficiency.

[0031] In view of the above reasons, an embodiment of the present invention provides a welding device and a welding method for pipe fittings. The welding device can solve the above problems, and will be described in detail below.

[0032] Please refer to Figures 1 to 3 The welding equipment includes a mounting frame 1, multiple pipe clamping devices 2, and multiple connector clamping devices 3. The multiple pipe clamping devices 2 are arranged at intervals and in parallel on one side of the mounting frame 1, and the multiple connector clamping devices 3 are arranged at intervals and in parallel on the other side of the mounting frame 1. The multiple connector clamping devices 3 correspond to the multiple pipe clamping devices 2, respectively, and the threaded pipe 8 can pass through the mounting frame 1 and extend to the connector clamping device 3. The welding equipment is provided with multiple pipe clamping devices 2 and multiple connector clamping devices 3. The multiple pipe clamping devices 2 can clamp multiple threaded pipes 8 at the same time, and the multiple connector clamping devices 3 can fix multiple connectors 9 at the same time. When the multiple threaded pipes 8 correspond to the multiple connectors 9 one by one, the welding machine can be started to weld the multiple threaded pipes 8 and the multiple connectors 9 at the same time, thereby performing batch welding operations, with fast welding speed and high welding efficiency, eliminating manual operation, and ensuring welding quality.

[0033] Mounting frame 1 is provided with multiple spaced through-holes. Multiple pipe clamping devices 2 are located on the same side of mounting frame 1, corresponding to one or more through-holes. Multiple connector clamping devices 3 are located on the other side of mounting frame 1, corresponding to one or more through-holes. Connector clamping devices 3 correspond to pipe clamping devices 2 through the through-holes. Pipe clamping devices 2 are used to clamp threaded pipes 8, while connector clamping devices 3 are used to secure connectors 9. Threaded pipes 8 pass through the through-holes and are brought into close contact with connectors 9, preparing for welding.

[0034] It is worth mentioning that the welding equipment of the embodiment of the present invention also includes a welding machine, which has a laser emission module and a command input module. The laser emission module is communicatively connected to the command input module. When the user inputs a work instruction in the command input module, the laser emission module can emit a fixed-power laser in a specified direction to achieve welding; wherein, the power of the laser emitted by the laser emission module is adjustable, and the direction of the laser emitted by the laser emission module can also be adjusted. The embodiment of the present invention uses a laser welding method. During welding, no welding material is required, so no welding waste is generated. Moreover, the composition of the molten metal liquid remains unchanged, and few or no bubbles are generated. Therefore, the quality of the welded part is good, the weld is firm and reliable, and laser welding can be spot welded, which is suitable for small-sized components with high precision. Of course, in other embodiments, other welding methods such as brazing can also be used, and this is not limited.

[0035] refer to Figure 4 and Figure 5 The connector clamping device 3 includes a core shaft 30, a sleeve 31, and a sleeve cover 32. The core shaft 30 has a large diameter end and a small diameter end. The small diameter end of the core shaft 30 passes through the through hole on the mounting frame 1 and extends to the pipe clamping device 2. The sleeve 31 is inserted into the end face of the large diameter end of the core shaft 30. At the same time, the core shaft 30 is provided with a through hole 301 along its own axial direction. The threaded tube 8 can extend from the pipe clamping device 2 to the large diameter end of the core shaft 30 through the through hole 301. A welding groove 311 is provided on the sleeve 31. The connector 9 is sleeved on the outside of the sleeve 31 and fixed. The shape and size of the welding groove 311 are adapted to the groove on the connector 9. The end of the threaded tube 8 passes through the through hole 301 and extends to the welding groove 311. The tube wall of the threaded tube 8 is connected to the groove of the connector 9. At this time, welding can be performed to weld the threaded tube 8 and the connector 9 together.

[0036] Since the finished product needs to be removed from the sleeve 31 after the threaded tube 8 and the connecting piece 9 are welded, in order to save effort when removing the finished product, a sleeve cover 32 is also sleeved on the outside of the core shaft 30. The sleeve cover 32 can move axially along the sleeve 31, thereby pushing the connecting piece 9 to move, so that the connecting piece 9 can be detached from the sleeve 31.

[0037] Optionally, an anti-slipping piece is further provided between the core shaft 30 and the sleeve cover 32, and the anti-slipping piece is used to prevent the sleeve cover 32 from completely slipping off the core shaft 30. There are various forms of the anti-slipping piece. For example, a groove is provided on the outer wall of the core shaft 30, and the groove has an axial groove cavity extending along the axial direction of the core shaft 30 and a circumferential groove cavity extending along the circumference of the core shaft 30. The circumferential groove cavity is away from one side of the sleeve head 31, and the axial groove cavity is away from one side of the sleeve head 31. The axial groove cavity and the circumferential groove cavity are connected; a protrusion is provided on the inner wall of the sleeve cover 32, and the protrusion is accommodated in the groove and can move in the axial groove cavity and the circumferential groove cavity. When the protrusion moves from the axial groove cavity to the circumferential groove cavity, the sleeve cover 32 can press the sleeve head 31 onto the core shaft 30 to limit the sleeve head 31. When the protrusion moves from the circumferential groove cavity to one side of the axial groove cavity, the sleeve cover 32 can push the connector 9 to fall off the sleeve head 31.

[0038] refer to Figure 6 and Figure 7 The pipe clamping device 2 includes a sleeve clamp 20, an elastic ring 21, a cover plate 22, a tooth row 23 and a second driving member 24; the sleeve clamp 20 is sleeved on the small diameter end of the core shaft 30, the elastic ring 21 is sleeved on the annular groove of the sleeve clamp 20 and connected to the core shaft 30; the cover plate 22 is connected to the end face of the small diameter end of the core shaft 30, the cover plate 22 is used to limit the sleeve clamp 20 and prevent the sleeve clamp 20 from falling off the core shaft 30; a pin is provided on the side of the cover plate 22 close to the sleeve clamp 20, and an arc-shaped limiting groove 201 is provided on the sleeve clamp 20, and the pin is slidably arranged in the limiting groove 201. When the sleeve clamp 20 and the elastic ring 21 are rotated clockwise, the sleeve clamp 20 and the elastic ring 21 will apply a clamping force to clamp the threaded pipe 8 from the radial direction, and the threaded pipe 8 cannot move axially. When the sleeve clamp 20 and the elastic ring 21 are rotated counterclockwise, the sleeve clamp 20 and the elastic ring 21 will be separated from the threaded pipe 8, and the threaded pipe 8 can move axially.

[0039] Because mounting frame 1 is equipped with multiple pipe clamping devices 2, a gear 202 is fixed to the end of the collet 20 away from the cover plate 22. A toothed rack 23 is disposed below the gear 202 and is mounted on mounting frame 1. Gear 202 meshes with toothed rack 23. Movement of toothed rack 23 drives the multiple gears 202 to rotate, thereby rotating the multiple collet 20 and elastic ring 21 to clamp and release multiple threaded pipes 8. A second drive member 24 is connected to toothed rack 23 to drive reciprocating motion. In this embodiment, second drive member 24 is a motor, whose output shaft is fixed with rotating teeth that mesh with toothed rack 23. The end of the motor's output shaft is rotatably connected to mounting frame 1 via a bearing. Alternatively, the toothed rack 23 can be manually driven to move, in which case the second drive member 24 is omitted.

[0040] Optionally, the elastic ring 21 is sleeved on the annular groove of the sleeve clamp 20, and the radial cross-section of the sleeve clamp 20 at this position is triangular. Since there are two slots on the connecting piece 9, there are two threaded pipes 8 welded on one connecting piece 9, and the two threaded pipes 8 are not symmetrically arranged along the diameter direction. Therefore, setting the sleeve clamp 20 into a triangular shape at the elastic ring 21 can make the elastic ring 21 cooperate with the threaded pipe 8 better, and can clamp the two threaded pipes 8 at the same time or disengage from the two threaded pipes 8.

[0041] Reference again Figure 2 and Figure 3 After the threaded tube 8 is clamped and the connector 9 is sleeved on the sleeve 31, the welding part of the two needs to be aligned with the welding machine so that the laser emitted by the welding machine can be aligned with the welding part to achieve welding. Since there are two slots on the connector 9 and they are aligned with the two welding slots 311, after welding is completed at the welding slot 311 on one side, it is necessary to rotate the threaded tube 8 and the connector 9 before welding at the welding slot 311 on the other side. The rotation of the threaded tube 8 and the connector 9 is achieved by the transmission assembly 4. In this embodiment, the transmission assembly 4 drives the multiple connector clamping devices 3 and the threaded tubes 8 and connectors 9 provided on the connector clamping devices 3 to move synchronously.

[0042] The transmission assembly 4 includes a first drive member 40, a driving wheel 41, and a rack 42. The driving wheel 41 is sleeved and fixed to the output end of the first drive member 40. The rack 42 is arranged below the driving wheel 41 and meshes with the rack 42. The rack 42 is connected to the mounting frame 1. A driven wheel 302 is also fixed to the large-diameter end of the core shaft 30, and the driven wheel 302 meshes with the rack 42. The first drive member 40 can be a motor. When the first drive member 40 is started, it drives the driving wheel 41 to rotate. The rotation of the driving wheel 41 drives the rack 42 to move. The movement of the rack 42 drives the multiple driven wheels 302 to rotate, thereby driving the multiple core shafts 30 to rotate. The connector 9 connected to the sleeve 31 and the threaded tube 8 located in the through hole 301 of the core shaft 30 also rotate accordingly, so that the second welding groove 311 is aligned with the laser emitted by the welding machine, achieving the second weld between the connector 9 and the threaded tube 8.

[0043] A housing 10 is further provided outside the rack 42 , the driving wheel 41 and the driven wheel 302 . The housing 10 is connected to the mounting frame 1 , and the first driving member 40 is mounted on the housing 10 .

[0044] Optionally, both ends of the rack 42 are provided with a stopper 43, which can define the initial and final positions of the movement of the rack 42, as well as the range of movement. Specifically, the stopper 43 is provided with a long slot 432, and the stopper 43 has a stopper arm 431. A locking member 433 is arranged in the long slot 432. The locking member 433 can fix the position of the stopper 43. By adjusting the relative position of the locking member 433 and the long slot 432, the initial and final positions of the movement of the rack 42 can be defined by the stopper arm 431. The locking member 433 can be a screw connected to the housing 10 or the mounting bracket 1 to fix the stopper 43. Of course, if the first driving member 40 is a motor, since the motor has a self-locking function, the stopper 43 can also be omitted.

[0045] Optionally, to prevent the rack 42 from shaking during movement, which would cause the driven wheel 302 to rotate unsteadily, a pressure rod 44 can be provided above the rack 42. The lower end of the pressure rod 44 is movably connected to the rack 42, with a small gap between the two. This ensures smooth movement of the rack 42 without increasing friction between the two. Of course, the pressure rod 44 can be connected to the housing 10 or the mounting bracket 1, and this is not limited to this.

[0046] Reference again Figure 1 A feeding device 5 is further provided on one side of the pipe clamping device 2 , through which threaded pipes 8 are supplied to the plurality of pipe clamping devices 2 .

[0047] The feeding device 5 includes a frame 50, multiple first limiting wheels 51 and multiple second limiting wheels 52. The multiple first limiting wheels 51 and the multiple second limiting wheels 52 correspond to each other and their wheel surfaces are connected. The first limiting wheel 51 and the second limiting wheel 52 are both rotatably connected to the frame 50 through a transmission shaft 53. The first limiting wheel 51 and the second limiting wheel 52 are both provided with a wheel surface groove 511. The threaded tube 8 is limited in the wheel surface groove 511. When the first limiting wheel 51 and / or the second limiting wheel 52 rotate, it can drive the threaded tube 8 to move along the wheel surface groove 511, thereby pushing the threaded tube 8.

[0048] The number of transmission shafts 53 can be two or more. When there are two transmission shafts 53, multiple first limiting wheels 51 are connected in series to one of the transmission shafts 53, and multiple second limiting wheels 52 are connected in series to the other transmission shaft 53. In this case, a third driving member 54 can be connected to one of the two transmission shafts 53. Each third driving member 54 drives one transmission shaft 53 to rotate, and then pushes the threaded tube 8 through the friction between the first limiting wheel 51 and the second limiting wheel 52. Of course, a corresponding first limiting wheel 51 and a second limiting wheel 52 form a group, and each group can be equipped with a third driving member 54, so that the pushed threaded tubes 8 do not affect each other, which is conducive to retracting and aligning some threaded tubes 8 and then pushing them again. Optionally, the third driving member 54 can be a motor.

[0049] The feeding device 5 further includes a guide member 55 disposed between the feeding device 5 and the pipe clamping device 2. The guide member 55 is used to guide the plurality of threaded pipes 8. The guide member 55 is a block structure having inclined guide holes extending therethrough, which are used to deliver the threaded pipes 8 pushed by the feeding device 5 to the pipe clamping device 2 at a predetermined interval.

[0050] A blanking mechanism 7 is also located outside the feeder 5. This mechanism comprises an upper die 70 and a lower die 71. This mechanism is used to punch through the threaded tubes 8, allowing for continued welding of the threaded tubes 8 and connectors 9. After the first batch of threaded tubes 8 and connectors 9 is welded, the upper die 70 moves relative to the lower die 71, punching through the threaded tubes 8 that pass through the lower die 71 and removing the welded threaded tubes 8 and connectors 9. The upper die 70 is positioned close to the feeder 5 to prevent deformation of the threaded tubes 8 during punching.

[0051] Continue to refer Figure 1 A detector 11 is also installed on the housing 10, which detects whether the threaded tube 8 is pushed into place through the detector 11. The detector 11 can be a visual detection module or other detection instrument. Taking the visual detection module as an example, when the position where the threaded tube 8 is pushed exceeds the predetermined welding position, the second driving member 24 is started to reverse, the clamp 20 and the elastic ring 21 loosen the threaded tube 8, and the feeding device 5 pulls the threaded tube 8 back and pushes it again.

[0052] A quality inspection device (not shown) is also mounted on the housing 10. This device is used to inspect the weld quality between the threaded tube 8 and the connector 9. The inspection device can employ a tensile test or image comparison. For example, the inspection device can be a visual inspection module. After the threaded tube 8 and the connector 9 are welded, the visual inspection module aligns the weld position between the two and captures a weld image. The image is then compared with a standard weld image to inspect the weld quality. If the weld quality is unsatisfactory, the operator is alerted to determine whether to re-weld the weld.

[0053] Finally, it is worth mentioning that, in this embodiment, Figure 1 and Figure 2 The pipe clamping device 2 and the connector clamping device 3 shown in the figure are both one, but in actual situations, multiple ones should be provided (such as Figure 3 shown).

[0054] The welding equipment of the embodiment of the present invention has the capability of batch welding, and can weld a plurality of threaded pipes 8 and a plurality of connectors 9 at the same time, and has good welding quality and high welding efficiency.

[0055] An embodiment of the present invention further provides a pipe welding method, which uses the above-mentioned welding equipment to weld the threaded pipe 8 and the connector 9, including the following steps: S1: Passing a plurality of threaded pipes 8 through a plurality of pipe clamping devices 2 respectively, and extending the ends of the threaded pipes 8 to predetermined positions of the connector clamping devices 3; S2: Installing the plurality of connectors 9 to the plurality of connector clamping devices 3 respectively, and adjusting the welding positions of the connectors 9 to correspond to the welding positions of the threaded tubes 8; S3: The pipe clamping device 2 clamps the threaded pipe 8, and the connector clamping device 3 fixes the connector 9; S4: Start the welding machine to weld the multiple connectors 9 and the multiple threaded pipes 8 simultaneously; S5: Remove the welded product and repeat the above operation to perform the next round of welding.

[0056] In step S1, the threaded tube 8 is supplied to the pipe clamping device 2 via the feeding device 5 or manually. When manually operated, the end of the threaded tube 8 is inserted into the through-hole 301 from the smaller-diameter end of the mandrel 30, pushing the threaded tube 8 into the welding groove 311 of the sleeve 31. Whether the threaded tube 8 is pushed manually or using the feeding device 5, the position of the threaded tube 8 within the welding groove 311 must be inspected. This inspection can be performed using a visual inspection module, which can be easily implemented using existing technologies and will not be further described here.

[0057] In step S2, the connector 9 is installed on the connector clamping device 3, specifically, the connector 9 is sleeved on the sleeve 31. The sleeve of the connector 9 on the sleeve 31 can also be achieved by manual operation or by a mechanical device. When operated manually, the operator holds the connector 9 and inserts the connector 9 on the outside of the sleeve 31, and rotates the connector 9 so that the slot of the connector 9 is aligned with the welding groove 311. When a mechanical device is used, a mechanical claw or a clamp can be used to clamp the connector 9 and sleeve the connector 9 on the sleeve 31, wherein the mechanical device sleeves the connector 9 and requires the cooperation of visual recognition technology.

[0058] In step S3, the threaded pipe 8 is clamped in two ways: one is manual operation, and the other is clamping driven by the second driving member 24 of the pipe clamping device 2. When manually operated, the operator holds the clamp 20 and rotates it to clamp the threaded pipe 8.

[0059] In step S4, before starting the welding machine, it is necessary to check whether the welding area of ​​the connector 9 and the threaded tube 8 is aligned with the laser emission area of ​​the welding machine to avoid misalignment of the welding position. After checking, the welding machine is started, and the laser irradiation melts the welding area. The welding machine is then turned off and the molten metal is allowed to solidify.

[0060] After the welding of the groove on the first side of the connecting part 9 is completed, the rack 42 is pushed manually or the rack 42 is pushed by the first driving part 40 to move, driving the connecting part clamping device 3 and the connecting part 9 and the threaded tube 8 to rotate, and aligning the second side welding part of the connecting part 9 and the threaded tube 8 with the laser emission area of ​​the welding machine to complete the welding of the second side of the connecting part 9 and the threaded tube 8.

[0061] In step S5, the operator loosens the collet 20 or reverses the second drive member 24 to release the threaded tube 8, allowing the threaded tube 8 to move axially. The operator manually or mechanically pushes the cover 32 and pushes the threaded tube 8 forward manually or using the third drive member 54 to disengage the finished connector 9 from the sleeve 31. The finished threaded tube 8 is then removed from the through hole 301 of the mandrel 30 using a robot or clamp or manually. Of course, the punching mechanism 7 is used to punch out the rear end of the threaded tube 8 to facilitate the next round of welding.

[0062] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A welding device, characterized in that: include: Mounting frame (1); A plurality of pipe clamping devices (2), the plurality of pipe clamping devices (2) being arranged at intervals and in parallel on one side of the mounting frame (1), the pipe clamping devices (2) being capable of clamping threaded pipes (8); A plurality of connector clamping devices (3) are provided at intervals and in parallel on the other side of the mounting frame (1); the plurality of connector clamping devices (3) correspond to the plurality of pipe clamping devices (2), respectively; and the threaded pipe (8) can pass through the mounting frame (1) and extend to the connector clamping device (3).

2. The welding equipment according to claim 1, characterized in that The connector clamping device (3) comprises a core shaft (30), a sleeve (31) and a sleeve cover (32); the sleeve (31) is connected to the end face of the core shaft (30); a welding groove (311) is provided on the sleeve (31); the sleeve (31) is used to sleeve the connector (9); the sleeve cover (32) is sleeved on the outside of the core shaft (30); the sleeve cover (32) is used to push the connector (9) to move; the threaded tube (8) passes through the core shaft (30) and extends to the welding groove (311); the connector (9) is welded to the threaded tube (8).

3. The welding equipment according to claim 2, characterized in that An anti-slip component is provided between the core shaft (30) and the sleeve cover (32), and the anti-slip component is used to prevent the sleeve cover (32) from slipping off the core shaft (30).

4. The welding equipment according to claim 2, characterized in that The pipe fitting clamping device (2) comprises a sleeve clamp (20), an elastic ring (21) and a cover plate (22); the sleeve clamp (20) and the elastic ring (21) are sleeved on the outside of the core shaft (30); the cover plate (22) is connected to the core shaft (30); a pin is provided on the cover plate (22); the sleeve clamp (20) has a limiting slide groove (201), and the pin is slidably provided in the limiting slide groove (201); by rotating the sleeve clamp (20) and the elastic ring (21), the sleeve clamp (20) and the elastic ring (21) clamp or detach the threaded pipe (8).

5. The welding equipment according to claim 1, characterized in that The welding equipment further comprises a transmission assembly (4), wherein the transmission assembly (4) is used to drive the plurality of connecting member clamping devices (3) to move synchronously; The transmission assembly (4) includes a first driving member (40), a driving wheel (41) and a rack (42), wherein the driving wheel (41) is connected to the output end of the first driving member (40), and the driving wheel (41) is meshed with the rack (42). A driven wheel (302) is fixed on the core shaft (30) of the connecting member clamping device (3), and the driven wheel (302) is meshed with the rack (42).

6. The welding device according to claim 5, characterized in that Both ends of the rack (42) are provided with stoppers (43), and the stoppers (43) are used to limit the movement range of the rack (42).

7. The welding equipment according to claim 1, characterized in that The welding device further comprises a feeding device (5), wherein the feeding device (5) is used to supply threaded pipes (8) to the plurality of pipe clamping devices (2); The feeding device (5) includes a plurality of first limiting wheels (51) and a plurality of second limiting wheels (52), the plurality of first limiting wheels (51) and the plurality of second limiting wheels (52) respectively correspond to each other and the wheel surfaces are connected, the first limiting wheels (51) and the second limiting wheels (52) are both provided with wheel surface grooves (511), the threaded tube (8) is limited in the wheel surface grooves (511), and the rotation of the first limiting wheel (51) and / or the second limiting wheel (52) can drive the threaded tube (8) to move along the wheel surface grooves (511).

8. The welding device according to claim 7, characterized in that The feeding device (5) further comprises a guide member (55), wherein the guide member (55) is arranged between the feeding device (5) and the pipe clamping device (2), and the guide member (55) is used to guide the plurality of threaded pipes (8).

9. The welding equipment according to any one of claims 1 to 8, characterized in that: The welding equipment further comprises a quality inspection device, which is used to detect the welding quality of the threaded pipe (8) and the connecting piece (9).

10. A method for welding pipe fittings, comprising welding a threaded pipe (8) and a connecting piece (9) using the welding equipment according to any one of claims 1 to 9, wherein: The following steps are involved: Passing a plurality of threaded pipes (8) through a plurality of pipe clamping devices (2) respectively, and extending the ends of the threaded pipes (8) to predetermined positions of the connector clamping devices (3); Installing a plurality of connecting pieces (9) to a plurality of connecting piece clamping devices (3) respectively, and adjusting the welding positions of the connecting pieces (9) to correspond to the welding positions of the threaded pipes (8); The pipe clamping device (2) clamps the threaded pipe (8), and the connecting piece clamping device (3) fixes the connecting piece (9); Starting the welding machine to simultaneously weld the plurality of connectors (9) and the plurality of threaded pipes (8); Remove the welded product and repeat the above steps for the next round of welding.

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