Cylinder weld treatment device

By using ultrasonic impact and adhesive coating technology in the gas tank weld treatment device, the quality problems caused by weld stress were solved, the explosion-proof and deformation-resistant properties of the gas tank were improved, and the performance in use was enhanced.

CN224674078UActive Publication Date: 2026-08-25IWATANI GAS APPLIANCES (ZHUHAI) CO LTD
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Patent Information

Application Number
CN202521345274.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-27
Publication Date
2026-08-25
Estimated Expiration
2035-06-27

AI Technical Summary

Technical Problem

Residual tensile stress generated during the production process of gas cylinder welds leads to poor welding quality, affecting explosion-proof performance and deformation resistance.

Method used

A gas cylinder weld treatment device is used, which uses an ultrasonic impact gun to vibrate the weld at high frequency, eliminates residual tensile stress through compression plastic deformation, and improves the fatigue life and deformation resistance of the weld position through an arc-shaped pressure plate and a glue application mechanism.

Benefits of technology

It effectively eliminates welding stress, improves welding quality, enhances the explosion-proof and deformation-resistant properties of the gas tank, and further improves its performance by applying an anti-corrosion adhesive layer.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a gas tank weld joint processing device, include: conveying groove, its groove bottom is provided with conveying mechanism, conveying mechanism has the conveying face of extending along conveying groove length direction, processing mechanism has the lifting plate of being close to or being away from conveying face downwards, be provided with processing unit on lifting plate, processing unit includes the pressing frame of being connected to lifting plate bottom side and ultrasonic wave impact rifle, the bottom side of pressing frame is provided with arc pressing plate, the middle part of arc pressing plate is provided with the avoiding slot hole of extending along conveying groove length direction, the working end of ultrasonic wave impact rifle stretches into avoiding slot hole, the utility model discloses utilize ultrasonic wave impact rifle to the weld joint processing of gas tank, is favorable to eliminating welding stress, improves the welding quality to improve the explosion -proof nature of gas tank, the use performance such as deformation resistance, etc.
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Description

Technical Field

[0001] This utility model relates to gas cylinder production equipment, and more particularly to a gas cylinder weld seam treatment device. Background Technology

[0002] Gas cylinders undergo multiple processes during production, including plate bending, rounding, and welding, to form a circular cylinder body. After welding, the longitudinal (along the height of the cylinder) and transverse (circumferential) shrinkage of the weld is constrained by the surrounding material, leading to a complex stress distribution. For example, longitudinal weld shrinkage may cause the cylinder to deform into a drum shape. If the weld is not treated before proceeding to the next process, the final product will have poor explosion-proof and deformation resistance. Therefore, there is an urgent need for equipment that can treat the welds of gas cylinders to improve their performance. Utility Model Content

[0003] The purpose of this utility model is to provide a gas cylinder weld seam treatment device to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this utility model is:

[0005] A gas cylinder weld treatment device includes: a conveying trough with a conveying mechanism at its bottom, the conveying mechanism having a conveying surface extending along the length of the conveying trough; and a treatment mechanism having a lifting plate that can move downward toward or upward away from the conveying surface, a treatment unit being provided on the lifting plate, the treatment unit including a pressure frame connected to the bottom side of the lifting plate and an ultrasonic impact gun, an arc-shaped pressure plate being provided on the bottom side of the pressure frame, an avoidance slot being provided in the middle of the arc-shaped pressure plate extending along the length of the conveying trough, and the working end of the ultrasonic impact gun extending into the avoidance slot.

[0006] This technical solution has at least the following beneficial effects: The welded gas cylinder is placed in the conveying trough, and the side wall of the conveying trough is used to limit the gas cylinder, keeping it on the conveying surface of the conveying mechanism. The gas cylinder is conveyed along the length of the conveying trough by the conveying surface. When the gas cylinder moves to the side of the processing mechanism, the lifting plate moves down close to the conveying surface, so that the arc-shaped pressure plate abuts against the top side of the gas cylinder, further preventing the gas cylinder from shifting. The working end of the ultrasonic impact gun extends into the clearance slot, and through high-frequency vibration, compressive plastic deformation is generated on the weld surface, thereby eliminating the residual tensile stress generated during the welding process and converting it into beneficial compressive stress. This also improves the fatigue life and fatigue strength of the weld position and improves the weld quality. After completion, the lifting plate moves the processing unit up away from the gas cylinder to prepare for the next treatment of the gas cylinder's outer weld. In this way, the use of an ultrasonic impact gun to treat the gas cylinder's weld helps to eliminate welding stress, improve welding quality, and thus improve the gas cylinder's explosion-proof performance, deformation resistance, and other performance characteristics.

[0007] As a further improvement to the above technical solution, multiple processing units are arranged at intervals along the length direction of the conveying trough.

[0008] As a further improvement to the above technical solution, the processing mechanism includes a drive assembly, which is connected to the lifting plate. The drive assembly can drive the lifting plate to move along the vertical direction and the length direction of the conveying trough. The processing mechanism is respectively provided on both sides of the conveying trough along the width direction.

[0009] As a further improvement to the above technical solution, the arc-shaped pressure plate is made of an elastic material.

[0010] As a further improvement to the above technical solution, the arc-shaped pressure plate and the pressure frame are detachably connected.

[0011] As a further improvement to the above technical solution, the present invention also includes a glue application mechanism, which is located closer to the downstream side of the conveying surface than the processing mechanism. The glue application mechanism includes a glue application component and a glue application wheel, which is located directly above the conveying surface. The glue application component is configured to apply glue to the outer periphery of the glue application wheel.

[0012] As a further improvement to the above technical solution, the gluing assembly includes a glue gun, a glue tank, a motor, and a glue roller. The glue outlet of the glue gun is directly opposite the glue tank. The motor drives and connects to the glue roller. The bottom of the glue roller extends into the glue tank, and the outer circumferential surface of the glue roller abuts against the outer circumferential surface of the glue roller.

[0013] As a further improvement to the above technical solution, the outer peripheral surface of the coating wheel is recessed from both sides toward the center of the coating wheel, and the shape of the outer peripheral surface of the gluing wheel is adapted to the shape of the outer peripheral surface of the coating wheel.

[0014] As a further improvement to the above technical solution, a fixing frame is connected to the top side of the glue-applying groove. The fixing frame is located on the side of the glue-applying wheel away from the glue-coating wheel, and a scraping block is provided on the fixing frame that can be close to or away from the outer circumference of the glue-applying wheel.

[0015] As a further improvement to the above technical solution, a lead screw is connected to the fixing frame, and the lead screw is connected to the scraper block.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0018] Figure 1 This is a top view of the entire utility model.

[0019] Figure 2 This is a side view of the processing mechanism of this utility model.

[0020] Figure 3 This is a three-dimensional view of the adhesive coating mechanism of this utility model.

[0021] In the attached diagram: 100-Conveying trough, 110-Conveying mechanism, 210-Lifting plate, 211-Arc-shaped pressure plate, 220-Pressure frame, 230-Ultrasonic impact gun, 240-Drive assembly, 310-Glue-applying wheel, 321-Glue-applying gun, 322-Glue-applying trough, 323-Glue-applying wheel, 330-Fixing frame, 340-Glue scraper block, 350-Screw rod. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Reference Figure 1 and Figure 2 A gas cylinder weld treatment device includes a conveying trough 100 and a treatment mechanism. The conveying trough 100 has a conveying mechanism 110 at its bottom. The conveying mechanism 110 has a conveying surface extending along the length of the conveying trough 100. The conveying mechanism 110 is mainly used to convey gas cylinders. For example, a belt conveyor can be used. The belt conveyor has a rotatable conveyor belt, and the top side of the conveyor belt forms a conveying surface at the bottom of the trough. The treatment mechanism has a lifting plate 210 that can move downward toward or upward away from the conveying surface. A treatment unit is provided on the lifting plate 210. The treatment unit includes a pressure frame 220 and an ultrasonic impact gun 230 connected to the bottom side of the lifting plate 210. An arc-shaped pressure plate 211 is provided on the bottom side of the pressure frame 220. An avoidance slot is provided in the middle of the arc-shaped pressure plate 211, extending along the length of the conveying trough 100. The working end of the ultrasonic impact gun 230 extends into the avoidance slot.

[0027] As described above, the welded gas cylinder is placed in the conveying trough 100, and the side wall of the conveying trough 100 is used to limit the gas cylinder, keeping it on the conveying surface of the conveying mechanism 110. The conveying surface transports the gas cylinder along the length of the conveying trough 100. When the gas cylinder moves to the side of the processing mechanism, the lifting plate 210 moves down close to the conveying surface, so that the arc-shaped pressure plate 211 abuts against the top side of the gas cylinder, further preventing the gas cylinder from shifting. The working end of the ultrasonic impact gun 230 extends into the clearance slot, and through high-frequency vibration, compressive plastic deformation is generated on the weld surface, thereby eliminating the residual tensile stress generated during the welding process and converting it into beneficial compressive stress. This also improves the fatigue life and fatigue strength of the weld position and improves the weld quality. After completion, the lifting plate 210 drives the processing unit to move up away from the gas cylinder to prepare for the next treatment of the gas cylinder's outer weld. In this way, the ultrasonic impact gun 230 is used to treat the gas cylinder's weld, which helps to eliminate welding stress, improve welding quality, and thus improve the gas cylinder's explosion-proof performance, deformation resistance, and other performance characteristics.

[0028] In practical applications, one processing unit processes the weld of one cylinder, while multiple cylinders are typically placed on the conveying surface simultaneously. To improve the processing efficiency of the cylinder welds, in this embodiment, multiple processing units are spaced apart along the length of the conveying trough 100. When the lifting plate 210 moves downward, it drives multiple processing units to move downward simultaneously towards multiple cylinders. At this time, multiple processing units process the welds of multiple cylinders respectively, effectively improving processing efficiency.

[0029] In the above embodiment, when the weld of the gas tank needs to be processed, the conveying mechanism 110 needs to stop working so that the gas tank can be stationary relative to the conveying surface. In order to improve the continuity of gas tank production, two sets of processing mechanisms can be set up to realize continuous processing of gas tanks. Specifically, the processing mechanism includes a drive component 240, which is connected to the lifting plate 210. The drive component 240 can drive the lifting plate 210 to move along the vertical direction and the length direction of the conveying trough 100. The processing mechanisms are respectively arranged on both sides of the conveying trough 100 along the width direction. When the weld seam of the gas cylinder needs to be processed, the conveying surface in the conveying mechanism 110 continues to convey the gas cylinder. At this time, the drive component 240 in one processing mechanism drives the lifting plate 210 to move synchronously with the conveying surface along the length of the conveying groove 100, so that the processing unit and the gas cylinder maintain the same translational speed. Then the lifting plate 210 moves down and the processing unit processes the weld seam on the gas cylinder. The processing of the weld seam is completed when the gas cylinder is moved to the downstream position of the conveying mechanism 110. The drive component 240 drives the lifting plate 210 to move up away from the gas cylinder and reset. During this process, the drive component 240 in another processing mechanism drives the lifting plate 210 to move to the upstream position of the conveying mechanism 110. After maintaining the same translational movement speed as the conveying surface, the gas cylinder continues to be processed. In this way, while the conveying mechanism 110 is conveying the gas cylinder, the two drive components 240 alternately process the gas cylinder, which helps to ensure the continuity of gas cylinder production and thus improve the production efficiency of gas cylinders.

[0030] The drive assembly 240 is mainly used to provide driving force to the processing unit on the lifting plate 210 along the vertical direction and the length direction of the conveying trough 100. Its structure can take various forms; for example, the drive assembly 240 can be a robotic arm, or it can include a translation drive, a translation plate, and a lifting drive. The translation drive drives and connects to the translation plate, enabling the translation plate to move back and forth along the length direction of the conveying trough 100. The lifting drive is connected to the translation plate and drives and connects to the lifting plate 210, enabling the lifting plate 210 to move up and down. The translation drive and lifting drive can respectively use a cylinder, hydraulic cylinder, or electric screw 350 as a drive source. During operation, the translation drive provides driving force to the lifting plate 210 along the length direction of the conveying trough 100, allowing the processing unit to maintain a translational movement speed synchronized with the conveying surface. Then, the lifting drive provides driving force to the lifting plate 210 to move up and down, causing the processing unit to move downwards towards the gas tank or upwards away from the gas tank.

[0031] To better protect the gas cylinder during pressure positioning, in this embodiment, the arc-shaped pressure plate 211 is made of an elastic material, such as rubber. The arc-shaped pressure plate 211, with its curved shape, can fit more closely to the outer surface of the gas cylinder, improving the cylinder's positioning effect. Furthermore, the elastic material of the arc-shaped pressure plate 211 can increase the downward pressure on the gas cylinder while preventing damage, thus improving overall operational stability.

[0032] When processing gas cylinders of different shapes, the shape of the arc-shaped pressure plate 211 needs to be different to better improve its limiting effect on the gas cylinder. Therefore, in this embodiment, the arc-shaped pressure plate 211 and the pressure frame 220 are detachably connected. The arc-shaped pressure plate 211 can be fixed to the pressure frame 220 by clips or screws. In practical applications, the height position of the arc-shaped pressure plate 211 can be further adjusted to adapt to different usage requirements. When it is necessary to replace gas cylinders of different specifications or sizes or to maintain the arc-shaped pressure plate 211, the arc-shaped pressure plate 211 can be removed from the pressure frame 220, improving the overall flexibility and versatility of use.

[0033] To better protect the weld, after processing the weld with an ultrasonic impact gun 230, an anti-corrosion adhesive layer can be applied to the weld area. Specifically, for example... Figure 3 As shown, this utility model also includes a glue-applying mechanism, which is located closer to the downstream side of the conveying surface than the processing mechanism. The glue-applying mechanism includes a glue-applying component and a glue-applying wheel 310. The glue-applying wheel 310 is located directly above the conveying surface. The glue-applying component is configured to apply glue to the outer periphery of the glue-applying wheel 310. Naturally, there are fixed structural members such as brackets on the side of the conveying trough 100. The glue-applying component and the glue-applying wheel 310 are mounted on the fixed structural members such as brackets to maintain their position. After the gas tank passes through the stress relief mechanism, it then passes through the adhesive application mechanism. At this time, the bottom of the outer circumference of the adhesive application wheel 310 abuts against the weld seam on the top side of the gas tank. The movement of the gas tank relative to the adhesive application wheel 310 drives the adhesive application wheel 310 to rotate, so that the adhesive on the outer circumference of the adhesive application wheel 310 can be applied to the weld seam on the top side of the gas tank. The adhesive application component can replenish the adhesive on the outer circumference of the adhesive application wheel 310 during the rotation of the adhesive application wheel 310, thereby ensuring the continuity of adhesive application to the weld seam. After applying adhesive to the weld seam, the corrosion resistance of the gas tank at the weld seam position can be improved, thereby further improving the performance of the gas tank.

[0034] The gluing assembly can directly dispense glue from the glue gun onto the outer circumferential surface of the gluing wheel 310. In order to improve the uniformity of glue application onto the outer circumferential surface of the gluing wheel 310, in this embodiment, the gluing assembly includes a glue gun 321, a glue tank 322, a motor, and a glue wheel 323. The glue dispensing end of the glue gun 321 is directly opposite the glue tank 322. The motor drives and connects to the glue wheel 323. The bottom of the glue wheel 323 extends into the glue tank 322. The outer circumferential surface of the gluing wheel 310 abuts against the outer circumferential surface of the glue wheel 323. Naturally, the glue gun 321, the motor, and the glue wheel 323 are also mounted on a fixed structural component such as a bracket. The glue tank 322 is filled with glue, and the glue gun 321 replenishes the glue in the glue tank 322. The motor drives the glue roller 323 to rotate. By utilizing the contact between the outer circumferential surface of the glue roller 323 and the outer circumferential surface of the glue coating roller 310, the glue coating roller 310 can be driven to rotate, and the glue can be replenished to the outer circumferential surface of the glue coating roller 310. In this way, the glue can be evenly replenished to the outer circumferential surface of the glue coating roller 310. By using the transmission of the glue roller 323 to the glue coating roller 310, the glue coating roller 310 is driven to rotate, thereby improving the effect of the glue coating roller 310 in applying glue at the weld position.

[0035] To further improve the quality of adhesive application at the weld seam of the gas tank, in this embodiment, the outer peripheral surface of the adhesive application wheel 310 is concave from both sides towards the center of the wheel 310, and the outer peripheral surface shape of the gluing wheel 323 is adapted to the outer peripheral surface shape of the adhesive application wheel 310. The concave cross-section of the outer periphery of the adhesive application wheel 310 better adapts to the shape of the gas tank, thereby increasing the contact area and improving the application effect when applying adhesive to the weld seam. Correspondingly, the matching shape of the outer peripheral surface of the gluing wheel 323 with that of the adhesive application wheel 310 helps to increase the contact area between the outer peripheral surfaces of the gluing wheel 323 and the adhesive application wheel 310, improving the effect of applying adhesive to the adhesive application wheel 310.

[0036] To better control the amount of adhesive applied from the gluing roller 323 to the coating roller 310, in this embodiment, a fixing frame 330 is connected to the top side of the gluing groove 322. The fixing frame 330 is located on the side of the gluing roller 323 away from the coating roller 310. A scraper block 340 is provided on the fixing frame 330, which can be close to or away from the outer peripheral surface of the gluing roller 323. A gap is formed between the scraper block 340 and the outer peripheral surface of the gluing roller 323. When the gluing roller 323 is close to its outer peripheral surface, the gap becomes smaller, reducing the amount of adhesive that can be contained, thereby reducing the amount of adhesive adhering to the outer peripheral surface of the gluing roller 323 and achieving the effect of reducing the amount of adhesive applied. Conversely, when the scraper block 340 is away from the outer peripheral surface of the gluing roller 323, the gap becomes larger, increasing the amount of adhesive that can be contained, thereby increasing the amount of adhesive delivered to the outer peripheral surface of the gluing roller 323 and achieving the effect of increasing the amount of adhesive applied.

[0037] As a specific embodiment of the adjustable movement of the scraper block 340 on the fixed frame 330, a lead screw 350 is connected to the fixed frame 330, and the lead screw 350 is connected to the scraper block 340 in a driving manner. The position of the scraper block 340 on the fixed frame 330 can be adjusted by the lead screw 350, thereby driving the scraper block 340 to move closer to or away from the outer peripheral surface of the glue application roller 323.

[0038] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A gas cylinder weld seam treatment device, characterized in that: include: A conveying trough (100) is provided with a conveying mechanism (110) at its bottom, the conveying mechanism (110) having a conveying surface extending along the length direction of the conveying trough (100); The processing mechanism has a lifting plate (210) that can move downward toward or upward away from the conveying surface. A processing unit is provided on the lifting plate (210). The processing unit includes a pressure frame (220) connected to the bottom side of the lifting plate (210) and an ultrasonic impact gun (230). An arc-shaped pressure plate (211) is provided on the bottom side of the pressure frame (220). An avoidance slot is provided in the middle of the arc-shaped pressure plate (211) extending along the length direction of the conveying groove (100). The working end of the ultrasonic impact gun (230) extends into the avoidance slot.

2. The gas cylinder weld treatment device according to claim 1, characterized in that: The processing units are arranged in multiple intervals along the length of the conveying trough (100).

3. The gas cylinder weld treatment device according to claim 1, characterized in that: The processing mechanism includes a drive assembly (240), which is connected to the lifting plate (210) in a transmission manner. The drive assembly (240) can drive the lifting plate (210) to move along the vertical direction and the length direction of the conveying trough (100). The processing mechanism is respectively provided on both sides of the conveying trough (100) along the width direction.

4. The gas cylinder weld treatment device according to claim 1, characterized in that: The arc-shaped pressure plate (211) is made of elastic material.

5. The gas cylinder weld treatment device according to claim 1, characterized in that: The arc-shaped pressure plate (211) and the pressure frame (220) are detachably connected.

6. The gas cylinder weld treatment device according to claim 1, characterized in that: It also includes a glue application mechanism, which is located closer to the downstream side of the conveying surface than the processing mechanism. The glue application mechanism includes a glue application assembly and a glue application wheel (310), which is located directly above the conveying surface. The glue application assembly is configured to apply glue to the outer periphery of the glue application wheel (310).

7. The gas cylinder weld treatment device according to claim 6, characterized in that: The gluing assembly includes a glue gun (321), a glue tank (322), a motor, and a glue roller (323). The glue outlet of the glue gun (321) is directly opposite the glue tank (322). The motor drives the glue roller (323). The bottom of the glue roller (323) extends into the glue tank (322). The outer circumferential surface of the glue applicator (310) abuts against the outer circumferential surface of the glue roller (323).

8. The gas cylinder weld treatment device according to claim 7, characterized in that: The outer peripheral surface of the coating wheel (310) is concave from both sides toward the center of the coating wheel (310), and the outer peripheral surface shape of the glue-applying wheel (323) is adapted to the outer peripheral surface shape of the coating wheel (310).

9. The gas cylinder weld treatment device according to claim 7, characterized in that: A fixing frame (330) is connected to the top side of the glue-applying groove (322). The fixing frame (330) is located on the side of the glue-applying wheel (323) away from the glue-applying wheel (310). A scraping block (340) is provided on the fixing frame (330) that can be close to or away from the outer circumference of the glue-applying wheel (323).

10. The gas cylinder weld treatment device according to claim 9, characterized in that: A lead screw (350) is connected to the fixing frame (330), and the lead screw (350) is connected to the scraper block (340) in a driving connection.