Automatic welding equipment for spiral plate heat exchanger

Abstract

The utility model relates to automatic welding technical field especially relates to a kind of spiral plate heat exchanger automatic welding equipment, including displacement mechanism, welding device and welding rotary table.Displacement mechanism is made of horizontal sliding table, vertical sliding table and lifting cantilever, for driving welding device multidirectional movement;Welding rotary table includes support seat, first power device, transmission assembly and support turntable, for clamping and driving heat exchanger uniform speed rotation;Welding device and laser tracker are set in lifting cantilever terminal, and the fine adjustment of welding gun position is realized by cross fine adjustment module.This application realizes the automatic tracking and accurate welding of spiral weld by real-time positioning weld and collaborative control welding rotary table and displacement mechanism, effectively solves the problem that artificial welding quality is unstable, operation difficulty is big and efficiency is low, with the advantages of high welding precision, good degree of automation and high production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automated welding technology, and in particular to an automatic welding device for spiral plate heat exchangers. Background Technology

[0002] Spiral plate heat exchangers, as a highly efficient heat exchange device, are widely used in industries such as petroleum, chemical, power, and metallurgy. Their structure typically consists of two parallel metal plates rolled together to form a spiral channel, where two media flow counter-currently to achieve heat exchange. Welding is a critical process in the manufacturing of spiral plate heat exchangers, directly affecting the equipment's sealing performance, strength, and service life.

[0003] Currently, welding operations for spiral plate heat exchangers primarily rely on manual labor. Specifically, operators must hold a welding torch and weld circle by circle along the spiral plate. The spiral plate structure is complex, with the weld seam forming a continuous spatial curve, requiring operators to possess a high level of skill and experience. Manual welding necessitates constant adjustments to the welding torch position and angle, resulting in high labor intensity and a high risk of errors due to fatigue. The consistency of manual welding is poor, easily leading to defects such as weld misalignment, incomplete penetration, and undercut, affecting the airtightness and mechanical properties of the equipment. Furthermore, imprecise control of welding heat input can result in deformation or residual stress concentration. Welding circle by circle is time-consuming and requires multiple stops to adjust the workpiece position, resulting in low production efficiency and difficulty in meeting the demands of mass production.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the general background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide an automatic welding device for spiral plate heat exchangers, addressing the deficiencies in existing technologies.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An automatic welding device for a spiral plate heat exchanger includes a displacement mechanism and a welding device disposed thereon, with a welding turntable disposed near the displacement mechanism. The displacement mechanism includes a horizontal slide table and a vertical slide table mounted thereon. A lifting arm is mounted on the vertical slide table. The welding device is mounted on the lifting arm and located above the welding turntable. A laser tracker is mounted on the lifting arm corresponding to the welding device. The welding turntable is located on the length side of the horizontal slide table and includes a support base and a first power device, a transmission assembly, and a support turntable mounted thereon. The first power device drives the support turntable to rotate through the transmission assembly.

[0007] Furthermore, a guide rail is provided along the length of the horizontal slide, and the vertical slide is slidably connected to the guide rail and driven to move along the length of the guide rail by a second power device.

[0008] Furthermore, a first linear module is provided on the vertical slide table along the vertical direction, and the lifting arm is disposed on the first linear module and is driven to move along the vertical direction by the first linear module.

[0009] Furthermore, a control panel is provided on the side of the vertical slide facing the welding turntable.

[0010] Furthermore, the welding device is connected to the lifting arm via a cross-shaped fine-tuning module, and the cross-shaped fine-tuning module is rotatably connected to the end of the lifting arm.

[0011] Furthermore, the cross-shaped fine-tuning module includes a vertically arranged second linear module and a third linear module. The second linear module is rotatably connected to the end face of the lifting arm, and the third linear module is disposed on the second linear module. The welding device and the laser tracker are both disposed on the third linear module.

[0012] Furthermore, the transmission assembly includes a driving tooth and a driven tooth that mesh with each other. The driven tooth is coaxially arranged with the support turntable and rotates synchronously. The driving tooth is driven to rotate by the first power device.

[0013] Furthermore, the welding device includes a clamping seat and an adjusting seat disposed thereon, a welding torch is disposed on the clamping seat, and a wire feeder is disposed on the adjusting seat corresponding to the welding torch.

[0014] The beneficial effects of this utility model are as follows: In this application, the automated welding operation of spiral plate heat exchangers is achieved through the coordinated operation of a displacement mechanism, a welding turntable, and a laser tracker, overcoming the inherent defects of traditional manual welding. A first power unit drives the support turntable to rotate precisely, controlling the circumferential feed of the heat exchanger. Simultaneously, the displacement mechanism drives the welding torch to move automatically along its radial direction. The two components combine to form a continuous and precise motion trajectory perfectly aligned with the spiral weld seam, ensuring absolute alignment of the welding path and completely eliminating quality defects such as weld misalignment and incomplete welds caused by the instability of manual operation. Attached Figure Description

[0015] 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, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the automatic welding equipment for spiral plate heat exchangers in this utility model; Figure 2 This is a schematic diagram of the welding turntable in this utility model; Figure 3 This is a schematic diagram of the displacement mechanism in this utility model; Figure 4 This is a schematic diagram of the welding device in this utility model; Figure 5 This is a welding schematic diagram of the spiral plate heat exchanger in this utility model.

[0017] Reference numerals: 1. Displacement mechanism; 11. Horizontal slide; 111. Guide rail; 112. Second power unit; 12. Vertical slide; 121. First linear module; 13. Lifting cantilever; 14. Cross fine-tuning module; 141. Second linear module; 142. Third linear module; 2. Welding device; 21. Clamping seat; 22. Adjusting seat; 23. Welding torch; 24. Wire feeder; 3. Welding turntable; 31. Support seat; 32. First power unit; 33. Transmission assembly; 331. Driving gear; 332. Driven gear; 34. Support turntable; 4. Control panel. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] like Figures 1 to 5 The automatic welding equipment for spiral plate heat exchangers shown includes a displacement mechanism 1 and a welding device 2 mounted thereon, with a welding turntable 3 located near the displacement mechanism 1. The displacement mechanism 1 includes a horizontal slide 11 and a vertical slide 12 mounted thereon. A lifting cantilever 13 is mounted on the vertical slide 12. The welding device 2 is mounted on the lifting cantilever 13 and located above the welding turntable 3. A laser tracker is mounted on the lifting cantilever 13 corresponding to the welding device 2. The welding turntable 3 is located on the length side of the horizontal slide 11 and includes a support base 31 and a first power device 32, a transmission assembly 33, and a support turntable 34 mounted thereon. The first power device 32 drives the support turntable 34 to rotate through the transmission assembly 33.

[0022] In this application, the welding device 2 is driven by the displacement mechanism 1 to approach the spiral plate heat exchanger on the welding turntable 3. The rotation angle of the spiral plate heat exchanger on the welding turntable 3 and the center point of the argon arc welding tungsten needle in the welding device 2 are determined by the laser tracker. The welding device 2 is controlled to cooperate with the welding turntable 3 to complete the welding operation of the spiral plate heat exchanger one circle at a time, thereby realizing the automated welding operation of the spiral plate heat exchanger and effectively overcoming the inherent defects of traditional manual welding.

[0023] In this embodiment, as Figure 3 As shown, a guide rail 111 is provided on the horizontal slide 11 along its length direction. The vertical slide 12 is slidably connected to the guide rail 111 and is driven to move along the length direction of the guide rail 111 by the second power device 112. A first linear module 121 is provided on the vertical slide 12 along the vertical direction. The lifting cantilever 13 is provided on the first linear module 121 and is driven to move along the vertical direction by the first linear module 121.

[0024] In the specific implementation process, such as Figure 5As shown, the lifting arm 13 is driven to move vertically by the first linear module 121, moving the welding device 2 on the lifting arm 13 to the welding station. After the welding operation is started, the support turntable 34 is driven to rotate by the first power device 32, causing the welding device 2 to weld along the circumference of the spiral plate heat exchanger. Simultaneously, the welding device 2 is driven to move radially along the spiral plate heat exchanger by the second power device 112, completing the welding operation along the spiral path. The combined motion trajectory of the two is completely consistent with the spiral weld, ensuring absolute alignment of the welding path and completely eliminating quality defects such as weld deviation and incomplete welding caused by the instability of manual operation.

[0025] In this embodiment, as Figure 4 As shown, the welding device 2 is connected to the lifting arm 13 via a cross-shaped fine-tuning module 14, and the end of the cross-shaped fine-tuning module 14 is rotatably connected to the lifting arm 13. A control panel 4 is provided on the side of the vertical slide 12 facing the welding turntable 3.

[0026] Specifically, the cross-shaped fine-tuning module 14 includes a vertically arranged second linear module 141 and a third linear module 142. The second linear module 141 is rotatably connected to the end face of the lifting arm 13, and the third linear module 142 is disposed on the second linear module 141. The welding device 2 and the laser tracker are both disposed on the third linear module 142.

[0027] The initial welding position of the welding device 2 on the spiral plate heat exchanger is adjusted by the control panel 4. The combination design of the lifting cantilever 13 and the cross fine adjustment module 14 enables the welding torch 23 to be coarsely adjusted and precisely positioned in three-dimensional space. The laser tracker monitors the positional relationship between the center point of the tungsten needle and the workpiece in real time, which greatly improves the accuracy and response speed of initial alignment and continuous welding.

[0028] Furthermore, the welding device 2 includes a clamping base 21 and an adjusting base 22 disposed thereon. A welding torch 23 is disposed on the clamping base 21, and a wire feeder 24 is disposed on the adjusting base 22 corresponding to the welding torch 23. The relative positions of the wire feeder 24 and the welding torch 23 can be independently adjusted by the adjusting base 22, ensuring the stability of the wire feeding angle and the state of the molten pool, and further guaranteeing the consistency of weld formation and excellent mechanical properties.

[0029] In this embodiment, as Figure 2 As shown, the transmission assembly 33 includes a driving gear 331 and a driven gear 332 that mesh with each other. The driven gear 332 is coaxially arranged with the support turntable 34 and rotates synchronously. The driving gear 331 is driven to rotate by the first power device 32. When the driving gear 331 rotates, it synchronously drives the driven gear 332 that meshes with it to rotate, thereby realizing precise control of the rotation angle of the spiral plate heat exchanger on the support turntable 34.

[0030] 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. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device for spiral plate heat exchangers, characterized in that, It includes a displacement mechanism and a welding device mounted thereon, with a welding turntable located near the displacement mechanism; The displacement mechanism includes a horizontal slide table and a vertical slide table mounted thereon. A lifting arm is mounted on the vertical slide table. The welding device is mounted on the lifting arm and located above the welding turntable. A laser tracker is mounted on the lifting arm corresponding to the welding device. The welding turntable is located on the length side of the horizontal slide table and includes a support base and a first power device, a transmission assembly, and a support turntable mounted thereon. The first power device drives the support turntable to rotate through the transmission assembly.

2. The automatic welding equipment for spiral plate heat exchangers according to claim 1, characterized in that, A guide rail is provided along the length of the horizontal slide, and the vertical slide is slidably connected to the guide rail and is driven to move along the length of the guide rail by a second power device.

3. The automatic welding equipment for spiral plate heat exchangers according to claim 1, characterized in that, A first linear module is provided on the vertical slide table along the vertical direction, and the lifting arm is provided on the first linear module and is driven to move along the vertical direction by the first linear module.

4. The automatic welding equipment for spiral plate heat exchangers according to claim 1, characterized in that, A control panel is provided on the side of the vertical slide facing the welding turntable.

5. The automatic welding equipment for spiral plate heat exchangers according to claim 1, characterized in that, The welding device is connected to the lifting arm via a cross-shaped fine-tuning module, and the cross-shaped fine-tuning module is rotatably connected to the end of the lifting arm.

6. The automatic welding equipment for spiral plate heat exchangers according to claim 5, characterized in that, The cross-shaped fine-tuning module includes a vertically arranged second linear module and a third linear module. The second linear module is rotatably connected to the end face of the lifting arm, and the third linear module is disposed on the second linear module. The welding device and the laser tracker are both disposed on the third linear module.

7. The automatic welding equipment for spiral plate heat exchangers according to claim 1, characterized in that, The transmission assembly includes a driving tooth and a driven tooth that mesh with each other. The driven tooth is coaxially arranged with the support turntable and rotates synchronously. The driving tooth is driven to rotate by the first power device.

8. The automatic welding equipment for spiral plate heat exchangers according to claim 1, characterized in that, The welding device includes a clamping seat and an adjusting seat disposed thereon. A welding torch is disposed on the clamping seat, and a wire feeder is disposed on the adjusting seat corresponding to the welding torch.

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