A valve-based circumferential welding device

Abstract

The utility model discloses a kind of circumferential welding devices based on valve, including feeding assembly, reset component, rotating assembly, welding assembly;Feeding assembly is linear module, and motion manipulator that reciprocates along straight line is equipped on feeding assembly, while realizing motion manipulator to do self-rotating motion, valve member is transferred to welding station by feeding assembly;Reset component is located in the side of welding station, and transferred valve member is moved to the middle of welding station by reset component, and it is vertically arranged;Rotating assembly is located at the top of welding station, and clamping is formed to the top of valve member by rotating assembly, and overall rotation is formed;Welding assembly is located in the side of welding station, and circumferential welding is formed to valve member in rotating state by welding assembly.Reduce artificial dependence and production cost, promote valve welding process to intelligent, flexible direction upgrade, meet the dual requirements of high-end equipment manufacturing to key component welding quality and production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of valve welding technology, specifically relating to a circumferential welding device based on valves. Background Technology

[0002] In core equipment fields such as automotive engines and industrial valves, valves are key components for controlling fluid flow, and their welding quality directly determines the sealing performance and service life of the equipment. With the increasing precision requirements of high-end equipment (such as the need to control the welding tolerance of engine valve sealing surfaces within ±0.03mm), and the urgent need for efficiency in mass production, traditional valve circumferential welding processes have gradually revealed many technical bottlenecks, making it difficult to meet the requirements of modern production.

[0003] Traditional welding equipment also has significant shortcomings in its structural design: the feeding process often uses fixed tracks and manual pushing, lacking posture adjustment capabilities and making it difficult to ensure coaxiality between the valve and the welding station; the clamping mechanism is mostly a rigid clamp in one direction, which easily leads to valve deformation (especially for thin-walled valves, where the deformation rate exceeds 5%), and cannot achieve stable rotation synchronously; the welding head position and angle are fixed, requiring disassembly and reassembly for different weld positions on the valve (such as top circumferential welds and rod butt welds), resulting in extremely poor flexibility. In addition, the welding area and the feeding area lack effective isolation, and welding slag and fumes easily contaminate the feeding mechanism, increasing equipment maintenance costs and the frequency of failures. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a circumferential welding device based on valves, which solves the above-mentioned technical problems existing in the prior art.

[0005] The objective of this utility model can be achieved through the following technical solutions: A valve-based circumferential welding device includes a feeding assembly, a reset assembly, a rotating assembly, and a welding assembly. The feeding assembly is a linear module, and a motion manipulator that reciprocates along a straight line is located on the feeding assembly. At the same time, the motion manipulator performs a self-rotation motion and transfers the valve component to the welding station through the feeding assembly. The reset assembly is located on the side of the welding station. The valve piece being transferred is moved to the center of the welding station by the reset assembly and is arranged in a vertical direction. The rotating assembly is located at the top of the welding station. The rotating assembly clamps the top of the valve component and causes the entire assembly to rotate. The welding assembly is located on the side of the welding station, and circumferential welding is performed on the valve components in a rotating state through the welding assembly.

[0006] Furthermore, a baffle is provided between the feeding assembly and the welding station, and a through hole is provided in the baffle along the vertical direction for the valve component to pass through, so that the valve component is transferred to the position of the welding station through the through hole.

[0007] Furthermore, the reset assembly includes a reset push rod and a reset pad. The reset push rod enables the reset pad to push the misaligned valve component along the horizontal direction until the valve component falls into the center position of the welding station.

[0008] Furthermore, the rotating assembly includes a support body, a clamping member, and a rotating member. The support body is located above the welding station and clamps the top of the valve component through the clamping member located at the top of the support body. The rotating member rotates the valve component clamped by the clamping member as a whole.

[0009] Furthermore, the rotating assembly also includes a correction component, which has an overall L-shaped arc surface structure, so that when the valve component rotates around the center, the correction component forms a latch against the valve stem.

[0010] Furthermore, a telescopic motor is installed at the bottom of the welding station. The telescopic motor raises the welding station, lifting the valve component from the bottom, and simultaneously pressing the valve component from the top.

[0011] Furthermore, a telescopic cylinder is provided at the end of the welding assembly, and an angle adjuster is provided at its front end, through which the relative angle between the welding assembly and the valve component is adjusted.

[0012] The beneficial effects of this utility model are: 1. This device uses a self-rotating motion robot arm in conjunction with a linear module to achieve automated transfer of valve components. At the same time, the baffle design with through holes ensures that the valve components enter the welding area accurately, while also isolating the welding station from the feeding area, thus improving operational safety and positioning accuracy.

[0013] 2. This device pushes the valve component to the center of the welding station through the arc-shaped pad and push rod structure of the reset component; on the other hand, it forms a radial clamp during the rotation of the valve component with the help of the L-shaped arc surface correction component, which restricts its runout. This dual protection ensures the concentricity of the welding.

[0014] 3. This device adopts a two-way positioning method of "bottom telescopic lifting + top hydraulic clamping", and in conjunction with the rotary drive unit integrated into the clamping component, it realizes the uniform rotation of the valve component in a stable clamping state, providing a stable motion basis for circumferential welding.

[0015] 4. The welding assembly is equipped with a telescopic cylinder and an angle adjuster, which can flexibly adjust the relative position and angle of the welding head and valve components to meet the weld position requirements of valve components of different specifications and improve the versatility of the equipment.

[0016] 5. The components used in this device work together in a continuous sequence of "feeding-resetting-clamping-rotating-welding-unloading" to achieve automated closed-loop production from raw materials to finished products, reducing manual intervention and improving production efficiency and welding consistency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a top view of an embodiment of the present invention. Figure 3 This is a schematic diagram of the baffle structure according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the reset component structure according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the rotating component and welding station structure according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the welding assembly structure according to an embodiment of the present invention. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1 , Figure 2 The present invention discloses a circumferential welding device based on valves, which aims to achieve automated circumferential welding of valve components, thereby improving welding accuracy and production efficiency. This device, through the coordinated operation of components such as feeding, resetting, rotation, and welding, completes the entire automated operation of valve components from material loading to welding formation.

[0021] I. Overall Structure of the Device The circumferential welding device mainly consists of a feeding assembly 1, a resetting assembly 2, a rotating assembly 3, a welding assembly 4, and a welding station 5. The specific structure and connection relationship of each assembly are as follows: The feeding assembly 1 adopts a high-precision linear module structure, whose main body includes a servo motor, a ball screw, and a slide rail. The servo motor drives the motion manipulator 11 to reciprocate along a linear direction, with a motion accuracy of ±0.02mm. The motion manipulator 11 integrates a pneumatic gripper and a rotary drive unit (stepper motor), which can both clamp valve components (clamping force adjustable, range 50-200N) and drive the valve components to rotate around their own axis (speed adjustable from 0-300r / min), meeting the valve component posture requirements of different processes.

[0022] A vertical baffle 12 (made of 45# steel, 10mm thick) is provided between the feeding assembly 1 and the welding station 5. A through hole 121 is opened vertically in the middle of the baffle 12. The diameter of the through hole is 2-3mm larger than the maximum outer diameter of the valve component, so as to ensure that the valve component can pass smoothly and block external impurities from entering the welding area.

[0023] The reset assembly 2 is installed on the side of welding station 5 (opposite to the feeding assembly 1), and includes a reset push rod 21 and a reset pad 22. The reset push rod 21 is a pneumatic push rod (50mm stroke, 100N thrust), and its end is connected to the reset pad 22 (made of nylon to avoid damaging the valve component surface) by bolts. The working surface of the reset pad 22 is machined into an arc shape to fit the outer circle of the valve component. Through the horizontal extension and retraction movement of the reset push rod 21, the misaligned valve component is pushed to the center position of welding station 5 to ensure subsequent positioning accuracy.

[0024] The rotating component 3 is fixed directly above the welding station 5 and consists of a support body 31, a clamping component 32, a rotating component 33, and a correcting component 34. The support body 31 is a gantry steel structure and is fixed to the equipment base by anchor bolts to ensure overall rigidity. The clamping component 32 is located on the top of the bracket body 31 and is hydraulically driven (pressure adjustable from 0-5000N). A wear-resistant rubber pad is installed at its lower end, which can flexibly clamp the top of the valve component to avoid deformation caused by rigid contact. The rotating component 33 is integrated on the drive shaft of the clamping component 32 and is driven by a servo motor (speed adjustable from 0-500r / min). It drives the clamped valve component to rotate synchronously through friction. The calibrator 34 is an L-shaped arc structure (made of high manganese steel with surface hardening treatment), fixed to the inner side of the bracket 31. Its arc surface is concentric with the outer circle of the valve stem (gap 0.5mm). When the valve rotates, the calibrator 34 can limit its radial runout (≤0.03mm) to ensure welding stability.

[0025] Welding assembly 4 is installed on the side of welding station 5 (perpendicular to reset assembly 2) and uses a laser welding machine (power adjustable from 500-3000W). Its end is equipped with a telescopic cylinder 401 (stroke 100mm), which can drive the welding head to move horizontally closer to or further away from the valve component. An angle adjuster 402 (accuracy ±0.1°) is installed at the front end of the telescopic cylinder, which drives the welding head to rotate around a horizontal axis via a servo motor, achieving precise adjustment of the welding angle (0°-90°) to meet the needs of different weld positions.

[0026] Welding station 5 is the core operating area of ​​the device. Its bottom is equipped with a telescopic motor 501 (servo motor driven, stroke 80mm, positioning accuracy ±0.01mm), and the top of the telescopic motor 501 is connected to a tray (made of high-temperature resistant ceramic). The lifting and lowering motion of the telescopic motor 501 drives the valve components to move vertically, achieving cooperation with the rotating component 3: when the tray is raised, the top of the valve component contacts and is pressed against the clamping component 32, while the bottom is supported by the tray, forming a bidirectional positioning.

[0027] Equipment Workflow The working process of this device is divided into five stages: loading, resetting, positioning and clamping, welding, and unloading. The specific steps are as follows: Material feeding stage Driven by the feeding assembly 1, the motion robot 11 moves to the valve storage area, and the pneumatic gripper clamps the valve to be welded (the clamping position is the non-welding area of ​​the valve). The feeding assembly 1 drives the motion robot 11 to move along the linear module to the baffle 12, and adjusts the posture of the valve component by the rotation drive unit so that its axis is coaxial with the through hole 121. The robotic arm 11 continues to advance, causing the valve component to pass through the through hole 121 until its lower end reaches above the tray of the welding station 5. Then the pneumatic gripper releases, and the valve component falls into the tray.

[0028] Reset phase The reset push rod 21 extends, causing the reset pad 22 to move closer to the valve component until the arc-shaped surface of the pad contacts the valve component. The reset push rod 21 continues to apply thrust, pushing the valve component to slide on the tray until the valve component axis coincides with the center axis of the welding station 5; The reset push rod 21 retracts and resets, awaiting the next action.

[0029] Positioning and clamping stage The telescopic motor 501 starts, driving the tray and valve components to rise until the top of the valve components approaches the clamping member 32 of the rotating assembly 3; The clamping member 32 extends downward under hydraulic drive, contacts the top of the valve component and applies a preset pressure (usually 1000-2000N), and works with the tray to form a two-way clamping of the valve component from top to bottom. The curved surface of the correction component 34 fits against the valve stem, limiting its radial displacement.

[0030] Welding stage Rotating component 33 starts, driving the valve components to rotate at a preset speed (set according to weld requirements, usually 50-200 r / min); The telescopic cylinder 401 of the welding assembly 4 extends to send the welding head to the preset welding position, while the angle adjuster 402 adjusts the angle of the welding head to ensure that the laser beam is focused on the weld. The laser welding machine is started and circumferential welding is completed during the rotation of the valve component (the welding time is set according to the weld depth, usually 2-10 seconds). After welding is completed, the laser is turned off, the telescopic cylinder 401 retracts, and the welding head returns to its initial position; the rotating component 33 stops working, and the valve component stops rotating.

[0031] Material feeding stage The clamping element 32 retracts upward, releasing the pressure on the valve component; The telescopic motor 501 drives the tray and the welded valve components to descend to the initial position; The robotic arm 11 of the feeding assembly 1 moves again to the welding station 5, clamps the finished product and transfers it to the unloading area; All components are reset to prepare for the next welding cycle.

[0032] This device achieves a high degree of automation, requiring no manual intervention from material feeding to welding, and enabling continuous mass production.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A circumferential welding device based on valves, characterized in that, It includes a feeding assembly (1), a reset assembly (2), a rotating assembly (3), and a welding assembly (4); The feeding assembly (1) is a linear module. A motion manipulator (11) that reciprocates along a straight line is provided on the feeding assembly (1). At the same time, the motion manipulator (11) performs a self-rotation motion and transfers the valve component to the welding station (5) through the feeding assembly (1). The reset assembly (2) is located on the side of the welding station (5). The valve piece being transferred is moved to the middle of the welding station (5) by the reset assembly (2) and is set in a vertical direction. The rotating assembly (3) is located at the top of the welding station (5). The rotating assembly (3) clamps the top of the valve piece and forms an overall rotation. The welding assembly (4) is located on the side of the welding station (5), and the valve component in the rotating state is circumferentially welded by the welding assembly (4).

2. The valve-based circumferential welding device according to claim 1, characterized in that, A baffle (12) is provided between the feeding assembly (1) and the welding station (5), and a through hole (121) for the valve component to pass through is provided in the vertical direction of the baffle (12), so that the valve component is transferred to the position of the welding station (5) through the through hole (121).

3. The valve-based circumferential welding device according to claim 1, characterized in that, The reset assembly (2) includes a reset push rod (21) and a reset pad (22). The reset push rod (21) pushes the reset pad (22) along the horizontal direction to push the misaligned valve until the valve falls into the center position of the welding station (5).

4. The valve-based circumferential welding device according to claim 1, characterized in that, The rotating assembly (3) includes a bracket (31), a clamping member (32), and a rotating member (33). The bracket (31) is located at the upper part of the welding station (5) and the clamping member (32) located at the top of the bracket (31) forms a clamping on the top of the valve component. The rotating member (33) rotates the valve component clamped by the clamping member (32) as a whole.

5. The valve-based circumferential welding apparatus according to claim 4, characterized in that, The rotating assembly (3) also includes a corrector (34), which has an overall L-shaped arc structure, so that when the valve rotates along the center, the corrector (34) forms a latch against the valve stem.

6. The valve-based circumferential welding apparatus according to claim 1, characterized in that, The bottom of the welding station (5) is equipped with a telescopic motor (501). The telescopic motor (501) causes the welding station (5) to be raised, which lifts the valve component from the bottom and simultaneously causes the clamping component (32) to clamp the valve component from the top.

7. The valve-based circumferential welding apparatus according to claim 1, characterized in that, The welding assembly (4) is provided with a telescopic cylinder (401) at its end and an angle adjuster (402) at its front end. The angle adjuster (402) is used to adjust the relative angle between the welding assembly (4) and the valve component.

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