Welding auxiliary component

Abstract

The present invention provides a welding auxiliary component, which relates to the technical field of filter element production. The present invention includes a component body, and the component body has a guiding groove and a first avoidance groove. The guiding groove is used to cooperate with the peripheral wall of the lead-out roller to form a material channel, and the material channel is used for the formed spiral filter element to pass through; the first avoidance groove is arranged in the guiding groove, and the first avoidance groove partially coincides with the spiral movement path of the skeleton of the spiral filter element on the lead-out roller to achieve avoidance of the skeleton; a welding hole is arranged in the first avoidance groove, and the welding hole is used to realize the cooperation of the welding electrode on the lead-out roller and the welding electrode on the pad to weld the skeleton and the filter membrane. Compared with the prior art, the present invention has the advantage that it can solve the problem of quality defects existing after the spiral filter element is formed.

Description

Technical Field

[0001] The present invention relates to the technical field of filter element production, and particularly to a welding auxiliary component. Background Art

[0002] Spiral filter elements are widely used in industries such as oil and gas, agriculture, medical treatment, aerospace and navigation, chemical industry, and food processing, and are mainly used for conveying pipelines, filtration systems, and high-precision equipment. These fields have strict requirements for the strength, corrosion resistance, filtration accuracy, and durability of spiral filter elements, and the market demand is increasing continuously.

[0003] Spiral filter elements are generally manufactured through relevant welding devices. In the related art, the welding device has a lead-out roller and a welding pad. After the filter membrane and the skeleton are spirally wound and formed, it is necessary to weld the skeleton and the filter membrane of the formed spiral filter element to improve the forming stability of the skeleton and the filter membrane; the applicant found that there are quality defects in the quality of the spiral filter element after welding during the implementation of the present invention. Summary of the Invention

[0004] In order to solve the problem of quality defects existing after the formation of spiral filter elements, the present application provides a welding auxiliary component.

[0005] In a first aspect, the present application provides a welding auxiliary component, adopting the following technical solution:

[0006] A welding auxiliary component includes a component body, the component body has a guiding groove and a first avoidance groove. The guiding groove is used to cooperate with the peripheral wall of the lead-out roller to form a material channel, and the material channel is used for the formed spiral filter element to pass through; the first avoidance groove is arranged in the guiding groove, and the first avoidance groove partially coincides with the spiral movement path of the skeleton of the spiral filter element on the lead-out roller to realize the avoidance of the skeleton; a welding hole is arranged in the first avoidance groove, and the welding hole is used to realize the cooperation of the welding electrode on the lead-out roller and the welding electrode on the welding pad to weld the skeleton and the filter membrane.

[0007] Preferably, the component body further has a cooling air duct for introducing cooling air, and the air outlet of the cooling air duct is arranged on the inner wall of the welding hole.

[0008] Preferably, the cooling air duct includes an insertion section and a diversion section that are axially connected. The insertion section is used for an external air duct to be inserted, and one end of the diversion section far away from the insertion section is open towards the cooperation position of the welding electrode on the lead-out roller and the welding electrode on the welding pad; the inner diameter of the insertion section is larger than the inner diameter of the diversion section to limit the external air duct from entering the diversion section.

[0009] Preferably, the mating position of the welding electrodes on the pad and the welding electrodes on the lead-out roller is the welding point, and the extension path of the cooling air duct is tangent to the outer peripheral contour line of the pad at the welding point.

[0010] Preferably, the lowest point of the inner bottom wall of the first relief groove is below the extension path of the cooling air duct, so that a partial component of the cooling air flow blown out from the cooling air duct enters the first relief groove and flows along the first relief groove following the skeleton.

[0011] Preferably, a second relief groove is provided on the side of the member body facing away from the first relief groove. The second relief groove is used for partially embedding the pad. The first relief groove and the second relief groove are connected by a welding hole, and the welding point is located in the welding hole.

[0012] Preferably, the highest point of the inner bottom wall of the second relief groove is above the extension path of the cooling air duct, so that a partial component of the cooling air flow blown out from the cooling air duct enters the second relief groove and flows along the second relief groove; and / or, the connection junction of the first relief groove and the second relief groove is located on the extension path of the cooling air duct.

[0013] Preferably, the surface of the member body facing away from the guiding groove is an installation surface, and the installation surface is detachably connected to the frame at a position avoiding the second relief groove.

[0014] Preferably, the installation surface is a curved surface.

[0015] Preferably, the member body further has an avoidance notch near the inlet end of the guiding groove. The avoidance notch is used for avoiding the conveyor belt wound around the lead-out roller.

[0016] The present invention has the following advantages and beneficial effects:

[0017] During the manufacturing process of the spiral filter element, the formed filter element first moves through the material channel, which is formed by the cooperation of the guiding groove and the peripheral wall of the lead-out roller. The design of the guiding groove ensures the stability of the filter element during movement, preventing welding errors caused by position deviation. During this process, the friction between the filter element and the lead-out roller is reduced, enabling the filter element to pass smoothly, while reducing the interference of external forces on the welding position, thereby ensuring the consistency and accuracy of the welding process.

[0018] When the filter element passes through the material channel, the first relief groove enables the framework to adjust itself during the welding process. Specifically, during welding, if the framework fails to fit perfectly with the filter membrane, the relief groove provides the necessary space to allow the framework to make slight adjustments during movement, thus avoiding the generation of gaps or misalignments. This flexibility ensures the tight fit between the framework and the filter membrane, reduces the possible structural defects during welding, and thus enhances the overall strength after welding.

[0019] In addition, the welding holes in the first relief groove ensure the precise docking between the welding electrodes on the lead roller and the welding electrodes on the pad. During the welding process, the design of the welding holes enables the welding electrodes to precisely apply heat and pressure between the framework and the filter membrane, ensuring the welding quality. This optimized electrode docking effectively reduces the risk of false soldering or uneven welding, significantly enhancing the bonding strength in the welding area.

[0020] In summary, the welding auxiliary component forms an efficient welding process through the stability of the guiding groove, the flexibility of the first relief groove, and the precise coordination of the welding holes. The combined effect of this series of designs not only effectively solves the common quality defects in the welding process of spiral filter elements but also significantly improves the overall strength and service life of the filter element, ensuring its reliable filtration performance in various high - requirement environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following - described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 is a partial installation schematic diagram for showing the installation of the component body on the frame in some embodiments of the present application;

[0023] Figure 2 is a structural schematic diagram for showing the component body in some embodiments of the present application Figure 1 ;

[0024] Figure 3 is a structural schematic diagram for showing the positional relationship between the component body and the lead roller in some embodiments of the present application;

[0025] Figure 4 is a partial cross - sectional view for showing the positional relationship between the component body and the lead roller in some embodiments of the present application;

[0026] Figure 5is a partial cross-sectional view of some embodiments of the present application for showing the positional relationship among the component body, the lead-out roller and the pad;

[0027] Figure 6 is a schematic structural view of some embodiments of the present application for showing the component body Figure 2 ;

[0028] Figure 7 is a partial cross-sectional view of some embodiments of the present application for showing the component body;

[0029] The markings in the figure are:

[0030] 100, component body; 110, guiding groove; 120, first avoidance groove; 121, welding hole; 130, material passage; 140, cooling air duct; 141, insertion section; 142, diversion section; 150, second avoidance groove; 160, mounting surface; 170, avoidance notch;

[0031] 200, frame;

[0032] 300, lead-out roller;

[0033] 400, conveyor belt;

[0034] 500, pad. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0036] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such used data may be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order different from those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and do not limit the number of objects. For example, the first object may be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0037] In the related art, spiral filters are widely used in multiple industrial fields, including oil and gas transportation, agricultural irrigation, medical devices, aerospace and navigation, chemical production, and food processing. These fields have extremely strict performance requirements for spiral filters. Especially when used in long-term, high-intensity, and corrosive environments, extremely high standards are put forward for the strength, corrosion resistance, filtration accuracy, and durability of the filters. To meet these requirements, the structural design and manufacturing process of the filters must ensure high strength and high precision. Especially in terms of bearing pressure, corrosion resistance, and long-term operation, spiral filters need to have excellent performance. With the continuous expansion of market demand, the demand for high-performance spiral filters continues to grow.

[0038] Chinese Patent No. CN117862279A discloses a rigid pipe blank and its skeleton structure. The manufacturing process of the spiral filter in this application uses a welding process. Its main manufacturing process is to helically wind and form the filter membrane and the support skeleton, and then fix the skeleton and the filter membrane by welding after forming to ensure the stability of the overall structure and the stability of forming. In the prior art, the welding device generally includes a drawing roller and a welding pad, and the formed filter is welded by these devices during the welding process. However, the applicant found in actual production and use that this welding process has certain technical problems, resulting in quality defects in the spiral filters produced during use, specifically manifested as unstable structure and filter failure.

[0039] First of all, the skeleton of the spiral filter is usually made of spiral-shaped support sheets. After being helically wound, the skeleton needs to be closely attached to the surface of the filter membrane. Ideally, the skeleton should be evenly and tightly attached to the filter membrane to form a stable spiral structure. However, in the existing manufacturing process, there may be certain deviations during the winding process, resulting in the inability to maintain complete adhesion between the skeleton and the filter membrane. For example, due to the inconsistent flexibility and thickness of the skeleton and filter membrane materials, or being affected by external forces during winding, local gaps may occur between the skeleton and the filter membrane, or the skeleton may not strictly adhere to the predetermined spiral path. These gaps and deviations will directly affect the quality of subsequent welding.

[0040] Secondly, the welding process itself has certain limitations. When welding in areas where the skeleton and the filter membrane are not closely attached or are misaligned, due to poor contact between the two, the heat conduction during welding is uneven, and the strength of the solder joints is difficult to meet the expected requirements, and even virtual welding may occur. This results in insufficient bonding force in the welding area, making the welded skeleton and filter membrane prone to separation or loosening under external pressure or temperature changes. In addition, poor welding may also cause local overheating of the material and damage to the filter membrane, further reducing the filtration performance and durability of the filter.

[0041] These welding defects not only affect the overall strength and structural stability of the spiral filter element, but may also cause premature failure of the filter element during actual use. Especially when used in high-pressure, high-temperature, and corrosive environments, the defective parts of the filter element are extremely likely to become stress concentration points, which will further accelerate the damage and cannot meet the strict requirements of high-precision equipment and systems for filtration performance.

[0042] Therefore, the existing spiral filter element manufacturing technology has the following disadvantages: 1. It is difficult to ensure complete fitting between the skeleton and the filter membrane during the winding process, resulting in unstable welding quality; 2. The heat control in the welding process is uneven, and the strength of the welding points is insufficient, resulting in a decrease in the overall structural strength of the filter element. There is an urgent need for an improved manufacturing process or welding method to ensure the tight fitting of the skeleton and the filter membrane of the spiral filter element and improve the welding quality, thereby enhancing the forming stability and service life of the spiral filter element.

[0043] Based on this, the present application provides a welding auxiliary component. The welding auxiliary component is provided on the welding device. Exemplarily, in combination Figure 1 , the welding device includes a frame 200, a lead-out roller 300, a conveyor belt 400, and a welding pad 500. The lead-out roller 300 is rotatably arranged on the frame 200. The conveyor belt 400 is partially wound around the inlet end of the lead-out roller 300. The welding pad 500 is rotatably arranged on the frame 200 at the lead-out end of the lead-out roller 300. After the filter membrane and the skeleton are spirally wound, they are wound around the lead-out roller 300 through the conveyor belt 400 and are moved out from the lead-out end of the lead-out roller 300 along the length direction of the lead-out roller 300. At the same time, since the position of the welding pad 500 is close to the lead-out end of the lead-out roller 300, during the rotation of the welding pad 500, a part of its disk surface can be rotated to be located on the moving path of the filter membrane and the skeleton to form a welding point. In this way, the mutually fitting part of the filter membrane and the skeleton during spiral winding can pass through the welding point, and the fitting part of the two can be continuously welded at the lead-out end of the lead-out roller 300 to achieve the final welding forming state.

[0044] Please refer to Figures 1 to 7 , the welding auxiliary component includes a component body 100. The component body 100 has a guiding groove 110 and a first avoidance groove 120. The guiding groove 110 is used to cooperate with the peripheral wall of the lead-out roller 300 to form a material channel 130. The material channel 130 is used for the formed spiral filter element to pass through; the first avoidance groove 120 is arranged in the guiding groove 110, and the first avoidance groove 120 partially coincides with the spiral moving path of the skeleton of the spiral filter element on the lead-out roller 300 to achieve avoidance of the skeleton.

[0045] At the same time, a welding hole 121 is arranged in the first avoidance groove 120. The welding hole 121 is used to realize the cooperation of the welding electrodes on the lead-out roller 300 and the welding electrodes on the welding pad 500 to weld the skeleton and the filter membrane.

[0046] On this basis, the guiding groove 110 cooperates with the peripheral wall of the lead-out roller 300 to form a material passage 130, enabling the formed spiral filter element to pass through smoothly. This design optimizes the flow path of the material during the welding process, which is beneficial to improving the stability and consistency of the filter element during manufacturing. By reducing the displacement and unnecessary friction of the material, the deviation that may occur during the welding process is reduced, thereby improving the forming accuracy of the filter element.

[0047] Meanwhile, the first avoidance groove 120 partially coincides with the skeleton in the spiral movement path, and the design purpose is to effectively avoid the skeleton. During the welding process, when the skeleton moves to the avoidance groove, the space in the avoidance groove allows the skeleton to be adjusted without obstruction, so that the skeleton can be accurately welded at an appropriate position during the welding process, thereby avoiding gaps or misalignments caused by improper positions, greatly reducing the stress concentration in the welding area, and effectively improving the welding quality.

[0048] Furthermore, the design of the welding hole 121 enables the welding electrode on the lead-out roller 300 to be accurately docked with the welding electrode on the pad 500. Through this precise cooperation, uniform heat and pressure can be provided during the welding process to ensure the strength and quality of the solder joints. This improvement reduces the risk of false soldering or uneven soldering that may occur during the welding process, makes the connection between the skeleton and the filter membrane more firm, and improves the stability of the overall structure.

[0049] In summary, through the comprehensive design of the guiding groove 110, the first avoidance groove 120, and the welding hole 121, this welding auxiliary component effectively solves the common quality defects of the spiral filter element during the welding process. First, the design of the material passage 130 ensures the stability of the filter element during the welding process; second, the setting of the first avoidance groove 120 enables the skeleton to make self-adjustment during welding to ensure the accuracy of the welding position; finally, the optimization of the welding hole 121 realizes the precise cooperation of the welding electrodes, thereby improving the welding quality. The combined effect of these series of improvement measures effectively enhances the overall performance of the spiral filter element, extends its service life, and ensures its reliability and stability in high-demand environments.

[0050] Furthermore, a pressure is applied to the spiral filter element by using the component body 100, so that when the spiral filter element travels along the spiral path, it can offset its own elastic force, maintain structural stability, and prevent wrinkles on the surface of the skeleton due to its own elastic force.

[0051] In some embodiments, referring to Figure 1 、 Figure 2, the component body 100 also has a cooling air duct 140 for introducing cooling air. The air outlet of the cooling air duct 140 is provided on the inner wall of the welding hole 121. With such a setting, during the welding process, cooling air is introduced through the cooling air duct 140 and directly blown out from the inner wall of the welding hole 121. This cooling effect helps to quickly reduce the temperature of the welding area and avoid material deformation or damage caused by overheating. This is crucial for maintaining the physical properties and structural integrity of the filter element material, especially in the case of use in a high-temperature environment. Reducing the welding temperature can significantly improve the stability of welding. At the same time, during the welding process, the heat-affected zone around the welding point is usually vulnerable to the influence of high temperature, resulting in a reduction in material performance. The cooling air introduced by the cooling air duct 140 can effectively reduce the temperature gradient in the heat-affected zone, reduce thermal stress, and avoid the formation of microcracks or structural weaknesses caused by temperature changes. This effect helps to improve the overall strength and service life of the filter element after welding.

[0052] Exemplarily, in combination with Figure 3 , Figure 4 , the cooling air duct 140 includes an insertion section 141 and a diversion section 142 that are axially connected. The insertion section 141 is for an external air duct to be inserted. One end of the diversion section 142 away from the insertion section 141 is open towards the mating part of the welding electrode on the drawing roller 300 and the welding electrode on the pad 500. Further, the external air duct is connected to a blower, and the generation of wind is directly achieved at the end of the external air duct through the blower.

[0053] Exemplarily, the inner diameter of the insertion section 141 is larger than the inner diameter of the diversion section 142 to limit the entry of the external air duct into the diversion section 142.

[0054] After such a setting, since the cooling air duct 140 is a relatively closed channel, after the cooling air is blown out from the external air duct, it is not easy for the cooling air to carry impurities in the external ambient air into the welding point, thereby reducing the influence of impurities entering the welding point on welding. This is beneficial to improving the cleanliness of the cooling air and at the same time improving the welding effect.

[0055] Furthermore, the combined structure of the insertion section 141 and the diversion section 142 ensures the precise guidance of the air flow. Specifically, the opening of the diversion section 142 faces the mating part of the welding electrode and the pad 500, so that the cooling air can accurately blow towards the welding point. This design significantly improves the cooling efficiency, can quickly reduce the temperature of the welding area, and prevent welding defects caused by excessive temperature in a local area during welding, such as overheating deformation of the welding point or a decrease in material performance.

[0056] On this basis, the inner diameter of the insertion section 141 is larger than that of the diversion section 142, so that the external air duct cannot extend deep into the diversion section 142. This structural design prevents the cooling air flow from strongly impacting the solder joint area by restricting the inflow of air, avoiding unnecessary interference with the welding process. For example, excessive air flow may cause instability of the molten pool during welding, uneven formation of the weld seam, or even false soldering. By reasonably controlling the air flow rate, the temperature of the solder joint area can be steadily reduced, thereby improving the welding quality. Moreover, the larger inner diameter of the insertion section 141 than that of the diversion section 142 can further concentrate the air flow, making the cooling air flow more concentrated on the welding point. Compared with the traditional cooling method, this air flow concentration design improves the cooling efficiency, shortens the cooling time, and avoids quality problems caused by uneven cooling during the welding process.

[0057] In some embodiments, such as Figure 1 , Figure 5 shown, the mating position of the welding electrodes on the pad 500 and the welding electrodes on the lead-out roller 300 is the welding point position, and the extension path of the cooling air duct 140 is tangent to the outer peripheral contour line of the pad 500 at the welding point position. After such a setting, when the cooling air flow blown out by the cooling air duct 140 enters the welding area, it can flow in a smooth and tangential direction, thereby avoiding direct impact of the cooling air flow on the welding point to a certain extent, and ensuring that the air flow can flow evenly and smoothly along the surface of the welding point. This is more conducive to taking away the heat at the welding point position than the design of directly blowing vertically or radially towards the welding point, because the contact area is larger when the air flow flows along the surface, and the heat transfer efficiency is higher.

[0058] At the same time, compared with the cooling air flow directly acting on the welding point, the tangential air flow path design avoids interference of the air flow with the welding process. If the air flow directly blows towards the welding point, it may affect the stability of the welding molten pool, resulting in uneven weld seams or poor welding quality. Through the tangential method, the cooling air flow flows in an indirect and smooth manner, which can not only effectively take away the heat, but also does not interfere with the formation and solidification process of the welding molten pool, ensuring the welding quality.

[0059] Furthermore, the cooling air flow enters the area near the welding point position in a tangential manner, forming an optimal cooling path with the mating position of the welding electrode and the welding pad. While not interfering with the operation of the welding electrode, the cooling air flow can concentrate on the high-temperature area of the welding point to take away the heat, improving the controllability of the overall welding process and the welding quality.

[0060] In some embodiments, referring to Figure 6 , Figure 7, the lowest point of the inner bottom wall of the first avoidance groove 120 is below the extension path of the cooling air duct 140, so that part of the cooling air flow blown out from the cooling air duct 140 enters the first avoidance groove 120 and flows along the first avoidance groove 120 following the skeleton. Exemplarily, the groove line of the first avoidance groove 120 is a smooth arc. In this way, when the cooling air flow is blown out from the cooling air duct 140, since the lowest point of the first avoidance groove 120 is below the extension path of the cooling air duct 140, part of the air flow will be naturally deflected into the first avoidance groove 120. According to the Bernoulli principle in fluid mechanics, the cooling air flow has a higher pressure and a lower speed in a larger cross-section (such as at the outlet of the cooling air duct 140), and when the cooling air flow enters the first avoidance groove 120, the channel restriction of the first avoidance groove 120 will cause the air flow to accelerate and flow along the first avoidance groove 120. The bottom wall of the first avoidance groove 120 is lower than the mainstream path of the cooling airflow. This design provides a "low-pressure zone" for the cooling airflow, so that the cooling airflow is naturally guided upward into the first avoidance groove 120 and continues to flow along the direction of the spiral skeleton.

[0061] At the same time, the first avoidance groove 120 not only provides an avoidance space for the frame, but also has a "capturing" effect on the cooling airflow. The existence of the first avoidance groove 120 forms an additional cooling airflow path, so that after the cooling airflow passes through the welding hole 121, part of the cooling airflow is guided into the first avoidance groove 120 and flows along the spiral path of the frame. Since the shape of the first avoidance groove 120 partially overlaps with the spiral path of the frame, the airflow can closely follow the surface of the frame, and then contact the welded part of the frame for a longer time, thereby enhancing the cooling and heat dissipation effect.

[0062] In some embodiments, reference Figure 5 , Figure 6 A second avoidance groove 150 is provided on one side of the component body 100 away from the first avoidance groove 120. The second avoidance groove 150 is used for partially embedding the pad 500. The first avoidance groove 120 and the second avoidance groove 150 are connected through a welding hole 121, and the welding point is located in the welding hole 121. Exemplarily, the groove shape of the second avoidance groove 150 is adapted to the contour of the pad 500.

[0063] After being set up like this, the design of the second avoidance groove 150 allows a part of the pad 500 to be embedded therein, enhancing the degree of fit between the pad 500 and the framework. By providing a suitable embedding space, the pad 500 can come into closer contact with the framework, and this improvement in the degree of fit directly affects the welding quality and reduces welding defects. At the same time, during the welding process, good fit can ensure the formation of a stable current path between the welding electrode and the pad 500, thereby promoting the uniform formation of solder joints. A higher degree of fit helps the uniform distribution of heat during the welding process, avoiding welding defects caused by local overheating or uneven cooling.

[0064] In some embodiments, referring to Figure 7 , the highest point of the inner bottom wall of the second avoidance groove 150 is located above the extension path of the cooling air duct 140, so that a partial component of the cooling air flow blown out from the cooling air duct 140 enters the second avoidance groove 150 and flows along the second avoidance groove 150.

[0065] After being set up like this, the second avoidance groove 150 is used to guide the cooling air flow to further flow out from the welding hole 121, increasing the contact time between the welding surface of the pad 500 and the cooling air flow, so that after the cooling air flow leaves the cooling air duct 140, it can continue to blow the surface of the pad 500 for a period of time, reducing the probability of impurities adhering to the surface of the pad 500. At the same time, it can also cool down the pad 500 to always maintain the welding effect of the pad 500.

[0066] Exemplarily, the communication junction of the first avoidance groove 120 and the second avoidance groove 150 is located on the extension path of the cooling air duct 140. With this setting, when the cooling air flow is ejected from the cooling air duct 140, it will be split at the communication junction, so as to effectively cover the welding area and its surrounding environment, that is, it can blow the cooling air flow into the first avoidance groove 120 and the second avoidance groove 150 at the same time, enhancing the uniformity and efficiency of cooling. Specifically, when the cooling air flow enters the first avoidance groove 120, it can directly cool the framework and reduce its temperature; when it enters the second avoidance groove 150, it ensures that the pad 500 can also be cooled in time. At the same time, by reasonably distributing the air flow, the risk of local overheating is reduced, avoiding welding defects caused by uneven air flow. This uniform cooling effect improves the overall quality and reliability of welding.

[0067] In some embodiments, referring to Figure 1 、 Figure 6 , the surface of the component body 100 facing away from the guiding groove 110 is the mounting surface 160, and the mounting surface 160 is detachably connected to the frame 200 at a position avoiding the second avoidance groove 150. Exemplarily, the mounting surface 160 can be bolted or clamped to the frame 200.

[0068] With such a setting, the installation position of the component body 100 and the frame 200 will not affect the normal docking between the leading roller 300 and the pad 500, improving the rationality of the installation of the component body 100 on the frame 200.

[0069] Exemplarily, the installation surface 160 is a curved surface. After such a setting, when the installation surface 160 is attached to the frame 200, the curved installation surface 160 can further prevent the sliding of the attachment part, which is beneficial to improving the installation stability of the component body 100 after installation.

[0070] In some embodiments, as Figure 2 shown, the component body 100 also has an avoidance notch 170 near the entrance end of the guiding groove 110. The avoidance notch 170 is used to avoid the conveyor belt 400 wound around the leading roller 300. After such a setting, after installing the component body 100, the component body 100 can be made to avoid the conveyor belt 400 through the setting of the avoidance notch 170, so that the installation position of the component body 100 does not affect the normal operation of the conveyor belt 400. At the same time, the operation of the conveyor belt 400 will not affect the use of the component body 100.

[0071] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered within the protection scope of the present invention.

Claims

1. A welding auxiliary component, characterized in that: The component body (100) comprises a guide groove (110) and a first avoidance groove (120), wherein the guide groove (110) is used to cooperate with the peripheral wall of a lead-out roller (300) to form a material channel (130), and the material channel (130) is used to allow a formed spiral filter element to pass through; the first avoidance groove (120) is arranged in the guide groove (110), and the first avoidance groove (120) partially overlaps with a spiral moving path of a frame of the spiral filter element on the lead-out roller (300), so as to avoid the frame; A welding hole (121) is provided in the first avoidance groove (120), and the welding hole (121) is used to achieve the cooperation between the welding electrode on the lead-out roller (300) and the welding electrode on the welding pad (500), so as to weld the frame and the filter membrane; The component body (100) further comprises a cooling air duct (140) for introducing a cooling air flow, and an air outlet of the cooling air duct (140) is arranged on the inner wall of the welding hole (121); The matching position of the welding electrode on the welding pad (500) and the welding electrode on the lead-out roller (300) is a welding point, and the extension path of the cooling air duct (140) is tangent to the outer peripheral contour line of the welding pad (500) at the welding point; The lowest point of the inner bottom wall of the first avoidance groove (120) is located below the extension path of the cooling air duct (140), so that a portion of the cooling air flow blown out from the cooling air duct (140) enters the first avoidance groove (120) and follows the frame to flow along the first avoidance groove (120); The cooling air duct (140) comprises an axially connected insertion section (141) and a guide section (142); the insertion section (141) is used for inserting an external air duct; an end of the guide section (142) away from the insertion section (141) opens toward a matching position between a welding electrode on the lead-out roller (300) and a welding electrode on the welding pad (500); The inner diameter of the insertion section (141) is greater than the inner diameter of the flow guide section (142), so as to limit the external air duct from entering the flow guide section (142).

2. The welding auxiliary member according to claim 1, characterized in that: A second avoidance groove (150) is provided on a side of the component body (100) facing away from the first avoidance groove (120), the second avoidance groove (150) being used for partially embedding the welding pad (500), the first avoidance groove (120) and the second avoidance groove (150) being connected via a welding hole (121), and the welding point is located in the welding hole (121).

3. The welding auxiliary member according to claim 2, characterized in that: The highest point of the inner bottom wall of the second avoidance groove (150) is located above the extension path of the cooling air duct (140), so that a portion of the cooling air flow blown out from the cooling air duct (140) enters the second avoidance groove (150) and flows along the second avoidance groove (150); And / or, the communicating boundary between the first avoidance groove (120) and the second avoidance groove (150) is located on the extension path of the cooling air duct (140).

4. The welding auxiliary member according to claim 2, characterized in that: A surface of the component body (100) that is away from the guide groove (110) is a mounting surface (160), and the mounting surface (160) is detachably connected to the frame (200) at a position avoiding the second avoidance groove (150).

5. The welding auxiliary member according to claim 4, characterized in that: The mounting surface (160) is a curved surface.

6. The welding auxiliary component according to any one of claims 1 to 5, characterized in that: The component body (100) is also provided with an avoidance notch (170) at an inlet end close to the guide groove (110), and the avoidance notch (170) is used to avoid the conveyor belt (400) wound around the lead-out roller (300).

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