Welding positioning device for check ring of catalyst tail pipe end cover assembly

Abstract

The utility model provides a welding and positioning device for a check ring of a catalyst tail pipe end cover assembly, which can quickly finish welding and positioning of the check ring and improve welding quality and production efficiency, a tail pipe end cover assembly bearing mechanism comprises a tail pipe end cover positioning table, a tail pipe supporting plate is arranged on the tail pipe end cover positioning table, and the tail pipe supporting plate is arranged on the tail pipe end cover positioning table. A tail pipe avoiding notch is formed in the tail pipe supporting plate, and a tail pipe of the tail pipe end cover assembly can extend into the tail pipe supporting plate from the tail pipe avoiding notch to be supported on the tail pipe supporting plate; a multi-arm supporting block of the positioning and pressing mechanism comprises a plurality of supporting arms, a pressing plate is installed at the upper end of the multi-arm supporting block, the pressing plate is provided with a pressing part exceeding the multi-arm supporting block, and the pressing plate and the multi-arm supporting block are installed on a driving device. The driving device is configured to be capable of driving the multi-arm supporting block to position the tail pipe of the tail pipe end cover assembly and driving the pressing plate to press the check ring.

Description

Technical Field

[0001] This utility model relates to the technical field of production auxiliary equipment for exhaust gas aftertreatment devices, and specifically to a welding and positioning device for the retaining ring of a catalyst tailpipe end cap assembly. Background Technology

[0002] The current aftertreatment catalyst consists of three main parts: DOC assembly, DPF assembly, and SCR assembly. The SCR assembly located at the rear end of the catalyst mainly includes a transition cylinder, a mixer, and a tailpipe end cap assembly.

[0003] Figure 1 A newly designed catalytic converter tailpipe end cap assembly is demonstrated, in which a retaining ring is added to the inside of the end cap. The retaining ring is welded to the tailpipe end cap and the tailpipe, which can enhance the structural strength of the tailpipe. Existing welding auxiliary devices for tailpipe end caps of exhaust gas aftertreatment devices, as disclosed in Chinese Utility Model Patent No. CN216912722U, cannot weld the retaining ring, nor can they be modified from existing equipment for welding the retaining ring. To improve production efficiency and quality, a new design of auxiliary welding equipment is needed. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a welding and positioning device for the retaining ring of the catalyst tailpipe end cap assembly. This device effectively solves the problem of production equipment mismatch caused by structural changes in the catalyst outlet tailpipe assembly, enabling rapid welding and positioning of the retaining ring, improving welding quality and production efficiency, and reducing production costs and operational difficulty.

[0005] The technical solution is as follows: a welding and positioning device for the retaining ring of a catalyst tailpipe end cap assembly, comprising:

[0006] The tailpipe end cap assembly support mechanism is characterized by:

[0007] The tailpipe end cap assembly support mechanism includes a tailpipe end cap positioning platform, a tailpipe support plate is provided on the tailpipe end cap positioning platform, and a tailpipe clearance notch is provided on the tailpipe support plate. The tailpipe of the tailpipe end cap assembly can extend into the tailpipe clearance notch, so that the tailpipe end cap assembly can be inverted and supported on the tailpipe support plate.

[0008] It also includes a positioning and clamping mechanism, which comprises:

[0009] A multi-arm support block, comprising a plurality of support arms, wherein the multi-arm support block is capable of supporting the tailpipe end cap assembly on the inner side of the tailpipe and positioning the tailpipe end cap assembly;

[0010] A pressure plate is installed on the upper end of the multi-arm support block. The pressure plate has a pressing part that extends beyond the multi-arm support block. The pressing part presses against the retaining ring fitted on the tail tube at the upper end of the retaining ring.

[0011] A driving device is provided, wherein the pressure plate and the multi-arm support block are mounted on the driving device, and the driving device is configured to drive the multi-arm support block to position the tailpipe of the tailpipe end cap assembly and drive the pressure plate to press the retaining ring.

[0012] Furthermore, the support arms are respectively arranged along the ray direction of a concentric circle, and the length of the support arm is adapted to the inner diameter of the tailpipe.

[0013] Furthermore, the number of pressing parts of the pressure plate is set according to the number of support arms of the multi-arm support block, and the pressing parts are respectively set at the upper end of the support arms.

[0014] Furthermore, the clamping part includes a screw hole, on which an adjustable bolt is provided, the adjustable bolt being used to clamp the retaining ring.

[0015] Furthermore, a welding avoidance zone is formed between the support arms.

[0016] Furthermore, the driving device is fixed on the driving device mounting base, which is located on one side of the tailpipe end cap positioning platform. The driving device includes a linear displacement device, and the driving device mounting base is also equipped with a vertically arranged guide rail. The guide rail is provided with a slidingly engaged slider, and a connecting plate is fixed on the slider. The connecting plate is connected to the moving part of the linear displacement device, and the connecting plate is connected to the adapter plate. The pressure plate is installed at the lower end of the adapter plate.

[0017] Furthermore, the tailpipe end cap assembly support mechanism also includes: a lifting base, which is disposed at the lower end of the tailpipe end cap positioning platform, and the lifting base is provided with a tailpipe avoidance area corresponding to the tailpipe avoidance notch on the tailpipe end cap positioning platform.

[0018] Furthermore, the tailpipe support plate is horizontally positioned.

[0019] Furthermore, the size of the tailpipe clearance notch is larger than the outer diameter of the tailpipe.

[0020] Furthermore, the tailpipe clearance notch is configured as an open waist-shaped hole, the tailpipe clearance notch is clearance-fitted with the outer diameter of the tailpipe, and the upper end of the tailpipe support plate is provided with a weldable anti-adhesion layer.

[0021] Furthermore, the tailpipe end cap positioning platform and the raised base are respectively provided with mounting and adjusting waist-shaped holes.

[0022] This invention relates to a welding positioning device for the retaining ring of a catalyst tailpipe end cap assembly. The device allows for welding of the retaining ring onto the catalyst tailpipe end cap assembly. The tailpipe assembly is inverted using a tailpipe end cap assembly support mechanism, and the retaining ring is placed directly on the tailpipe to be welded. Positioning is then achieved through a positioning and clamping mechanism. A multi-arm support block positions the tailpipe of the end cap assembly, while the retaining ring on the tailpipe also self-positions. Finally, a pressure plate clamps the retaining ring to complete the positioning. This welding positioning device enables high-precision positioning of the end cap assembly and the retaining ring, ensuring the uniformity and quality of the weld. It also allows for one-time welding of the inner side of the tailpipe and the outer side of the retaining ring, improving welding efficiency and reducing the need for secondary processing. Furthermore, the welding positioning device features a tailpipe clearance notch for easy loading and unloading of the tailpipe assembly, further improving production efficiency and reducing operational difficulty. Attached Figure Description

[0023] Figure 1 A schematic diagram of a newly designed catalyst tailpipe end cap assembly;

[0024] Figure 2 A schematic diagram of a welding positioning device for a retaining ring of a catalyst tailpipe end cap assembly in practice;

[0025] Figure 3 A schematic diagram from a first perspective of a welding positioning device used to position the retaining ring of the tailpipe end cap assembly centered in the tailpipe.

[0026] Figure 4 A schematic diagram from a second perspective of a welding positioning device used to position the retaining ring of the tailpipe end cap assembly centered in the tailpipe.

[0027] Figure 5 A schematic diagram from a first perspective of a welding positioning device used to position the retaining ring of an eccentric tailpipe end cap assembly.

[0028] Figure 6 A second-view schematic diagram of a welding positioning device in practice, used to position the retaining ring of an eccentric tailpipe end cap assembly.

[0029] Figure 7 A schematic diagram from a first-view perspective of a tailpipe end cap positioning platform for positioning a tailpipe assembly in practice;

[0030] Figure 8 A schematic diagram from a second perspective of a tailpipe end cap positioning platform for positioning a tailpipe assembly during implementation;

[0031] Figure 9 This is a schematic diagram of a tailpipe end cap positioning platform for positioning tailpipe components in practice. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Those skilled in the art can understand other advantages and effects of this invention from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0033] As described in the background section, due to structural changes in the catalytic converter outlet tailpipe end cap assembly, the original equipment is no longer suitable, and it is impossible to modify the original equipment to adapt to the new tailpipe end cap assembly. Therefore, a new welding positioning device has been designed to adapt to the production and processing of tailpipe end cap assemblies with retaining rings. Figures 2 to 9 As shown, the present invention provides a welding and positioning device for the retaining ring of a catalyst tailpipe end cap assembly, comprising:

[0034] The tailpipe end cap assembly support mechanism 100 includes a tailpipe end cap positioning platform 101, a tailpipe support plate 102 on the tailpipe end cap positioning platform 101, and a tailpipe clearance notch 103 on the tailpipe support plate 102. In the embodiment, the tailpipe clearance notch 103 is an open opening, and the tailpipe 1 of the tailpipe end cap assembly can extend into the tailpipe clearance notch 103, so that the tailpipe end cap assembly can be inverted and supported on the tailpipe support plate 102. In the embodiment, the tailpipe support plate 102 is set horizontally, which helps to achieve high-precision positioning of the end cap tube assembly and the retaining ring.

[0035] It also includes a positioning and clamping mechanism 200, which includes:

[0036] The multi-arm support block 210 includes several support arms 211. The multi-arm support block 211 can support the tail tube 1 inside the tail tube end cap assembly and position the tail tube end cap assembly.

[0037] Pressure plate 220 is installed on the upper end of multi-arm support block 210. Pressure plate 220 has a pressing part that extends beyond the multi-arm support block. The pressing part presses the retaining ring 2, which is fitted on the tail tube 1, at the upper end of the retaining ring 2.

[0038] The drive unit 230, pressure plate 220 and multi-arm support block 210 are mounted on the drive unit 230. The drive unit 230 is configured to drive the multi-arm support block 210 to position the tail tube 1 of the tail tube end cap assembly and drive the pressure plate 220 to press the retaining ring 2.

[0039] Since the weld seams are evenly distributed circumferentially around the reinforcing retaining rings, it is necessary to ensure the positioning accuracy of the end cap assembly and the reinforcing retaining rings to achieve high-quality welding. In this embodiment, the welding positioning device for the retaining rings of the catalyst tailpipe end cap assembly allows welding of the retaining rings onto the catalyst tailpipe end cap assembly. The tailpipe assembly is inverted using the tailpipe end cap assembly support mechanism 100, and the retaining ring 2 is directly placed on the tailpipe 1 to be welded. Positioning is then achieved through the positioning and clamping mechanism 200. The multi-arm support block 210 positions the tailpipe 1 of the tailpipe end cap assembly. Simultaneously, the retaining ring 2 on the tailpipe, being directly fitted onto the tailpipe 1, also achieves adaptive positioning. Finally, the retaining ring is clamped by a pressure plate to complete the positioning. Using the positioning and clamping mechanism in this embodiment achieves high-precision positioning of the end cap assembly and the reinforcing retaining rings, ensuring the uniformity and quality of the weld seams. Precise positioning and stable clamping reduce errors during assembly, improving the assembly accuracy and welding quality of the final product.

[0040] The welding positioning device described in this embodiment can quickly complete the welding positioning of the retaining ring through a single clamping and positioning, reducing the time spent on multiple clamping and positioning processes and improving welding efficiency. It can also achieve one-time welding of the inner side of the tailpipe and the outer side of the retaining ring, improving welding efficiency and reducing the need for secondary processing. In addition, a tailpipe clearance notch is designed to facilitate the loading and unloading of tailpipe components, reducing operational difficulty and time, thereby improving production efficiency and reducing operational difficulty.

[0041] In one embodiment, the support arms 211 are respectively arranged along the ray direction of a concentric circle. The length of the support arms 211 is adapted to the inner diameter of the tail tube 1. By adjusting the position of the tail tube end cap assembly on the tail tube end cap assembly support mechanism 100, the multi-arm support block 210 can be inserted into the tail tube to achieve the positioning of the tail tube 1. A welding avoidance area 212 is formed between the support arms 211 to leave welding space and avoid the welding torch.

[0042] In this embodiment, the number of clamping parts of the pressure plate 220 corresponds to the number of support arms of the multi-arm support block. The clamping parts are respectively set at the upper end of the support arm. The clamping part includes a screw hole 222, and an adjustable bolt 221 is provided on the screw hole 22. The adjustable bolt 221 is used to clamp the retaining ring. Through the adjustable bolt 221, the retaining rings of various tailpipe assemblies can be adapted. Retaining rings of different heights can be adapted by adjusting the adjustable bolt 221, which improves the applicability of the equipment. The setting of the adjustable bolt 221 can also realize the adjustment of the clamping force according to actual needs, ensuring the fit between the retaining ring and the end cap and improving the welding quality. The retaining ring is located on the inner side of the catalyst, so there is no problem of affecting the appearance of the catalyst.

[0043] In this embodiment, the drive device 230 is fixed on the drive device mounting base 231, which is located on one side of the tailpipe end cap positioning platform 101. The drive device includes a linear displacement device 232, which uses a quick clamp, or can use a cylinder, linear module, or other devices. The drive device mounting base is also equipped with a vertically arranged guide rail 233, which has a slidingly engaged slider 234. A connecting plate 235 is fixed on the slider 234. The connecting plate 235 is connected to the moving part of the linear displacement device 232 and to the adapter plate 236. The pressure plate 220 is installed at the lower end of the adapter plate 236.

[0044] In one embodiment, the tailpipe end cap assembly support mechanism 100 further includes a lifting base 104, which is disposed at the lower end of the tailpipe end cap positioning platform 101. The lifting base 104 is provided with a tailpipe avoidance area 105 corresponding to the tailpipe avoidance notch 103 on the tailpipe end cap positioning platform. The lifting base 104 can enable the equipment to adapt to more catalysts with long tailpipes, further improving the adaptability of the equipment. The tailpipe end cap positioning platform 101 and the lifting base 104 are respectively provided with mounting and adjustment waist-shaped holes 107 to facilitate assembly and improve the adaptability of the equipment.

[0045] Considering that the tailpipe end cap assembly has two states, tailpipe eccentricity and tailpipe centering, this embodiment provides two tailpipe end cap assembly support mechanisms 100.

[0046] like Figure 2 , 3 As shown in Figures 4, 5, and 6, in this embodiment, the size of the tailpipe avoidance notch 103 is larger than the outer diameter of the tailpipe 1. This design can directly avoid the weld position of the retaining ring and prevent welding adhesion. The tailpipe support plate 102 in this embodiment is more suitable for tailpipe end cap assemblies with eccentric tailpipes, making it easier to adjust. Tailpipe end cap assemblies with tailpipes in the center can also use the tailpipe support plate 102 in this embodiment.

[0047] like Figure 8 , 9 As shown, in another embodiment, the tailpipe clearance notch 103 is configured as an open waist-shaped hole, and the tailpipe clearance notch is fitted with the outer diameter of the tailpipe. The upper end of the tailpipe support plate is provided with a welding anti-adhesion layer 106, which can be made of copper or its alloy materials. In this embodiment, the tailpipe support plate 102 is more suitable for the tailpipe end cap assembly centered on the tailpipe, and also has a positioning function for the tailpipe end cap assembly. The tailpipe end cap assembly is placed on the tailpipe support plate 102, which basically completes the positioning of the tailpipe end cap assembly, requiring only minor adjustments or no adjustments at all.

[0048] The welding and positioning device for the retaining ring of the catalyst tail tube end cap assembly of this utility model can simultaneously adapt to both eccentric and centered states of the end cap tube assembly, thus improving the versatility and flexibility of the equipment.

[0049] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A welding and positioning device for the retaining ring of a catalyst tailpipe end cap assembly, comprising: The tailpipe end cap assembly support mechanism is characterized by: The tailpipe end cap assembly support mechanism includes a tailpipe end cap positioning platform, a tailpipe support plate is provided on the tailpipe end cap positioning platform, and a tailpipe clearance notch is provided on the tailpipe support plate. The tailpipe of the tailpipe end cap assembly can extend into the tailpipe clearance notch, so that the tailpipe end cap assembly can be inverted and supported on the tailpipe support plate. It also includes a positioning and clamping mechanism, which comprises: A multi-arm support block, comprising a plurality of support arms, wherein the multi-arm support block is capable of supporting the tailpipe end cap assembly on the inner side of the tailpipe and positioning the tailpipe end cap assembly; A pressure plate is installed on the upper end of the multi-arm support block. The pressure plate has a pressing part that extends beyond the multi-arm support block. The pressing part presses against the retaining ring fitted on the tail tube at the upper end of the retaining ring. A driving device is provided, wherein the pressure plate and the multi-arm support block are mounted on the driving device, and the driving device is configured to drive the multi-arm support block to position the tailpipe of the tailpipe end cap assembly and drive the pressure plate to press the retaining ring.

2. The welding and positioning device for the retaining ring of the catalyst tailpipe end cap assembly according to claim 1, characterized in that: The support arms are respectively arranged along the ray direction of a concentric circle, the length of the support arm is adapted to the inner diameter of the tailpipe, and a welding avoidance area is formed between the support arms.

3. The welding and positioning device for the retaining ring of the catalyst tailpipe end cap assembly according to claim 1, characterized in that: The number of pressing parts of the pressure plate is set according to the number of support arms of the multi-arm support block, and the pressing parts are respectively set at the upper end of the support arm.

4. The welding and positioning device for the retaining ring of the catalyst tailpipe end cap assembly according to claim 3, characterized in that: The clamping part includes a screw hole, and an adjustable bolt is provided on the screw hole. The adjustable bolt is used to clamp the retaining ring.

5. The welding and positioning device for the retaining ring of the catalyst tailpipe end cap assembly according to claim 1, characterized in that: The drive device is fixed on the drive device mounting base, which is located on one side of the tailpipe end cap positioning platform. The drive device includes a linear displacement device. The drive device mounting base is also equipped with a vertically arranged guide rail. The guide rail is provided with a slidingly engaged slider. A connecting plate is fixed on the slider. The connecting plate is connected to the moving part of the linear displacement device. The connecting plate is connected to the adapter plate. The pressure plate is installed at the lower end of the adapter plate.

6. The welding and positioning device for the retaining ring of the catalyst tailpipe end cap assembly according to claim 1, characterized in that: The tailpipe end cap assembly support mechanism further includes: a lifting base, which is disposed at the lower end of the tailpipe end cap positioning platform, and the lifting base is provided with a tailpipe avoidance area corresponding to the tailpipe avoidance notch on the tailpipe end cap positioning platform.

7. The welding and positioning device for the retaining ring of the catalyst tailpipe end cap assembly according to claim 1, characterized in that: The tailpipe support plate is set horizontally.

8. The welding and positioning device for the retaining ring of the catalyst tailpipe end cap assembly according to claim 1, characterized in that: The size of the tailpipe clearance notch is set to be larger than the outer diameter of the tailpipe.

9. The welding and positioning device for the retaining ring of the catalyst tailpipe end cap assembly according to claim 1, characterized in that: The tailpipe clearance notch is configured as an open waist-shaped hole, and the tailpipe clearance notch is clearance-fitted with the outer diameter of the tailpipe. The upper end of the tailpipe support plate is provided with a weldable anti-adhesion layer.

10. The welding and positioning device for the retaining ring of the catalyst tailpipe end cap assembly according to claim 6, characterized in that: The tailpipe end cap positioning platform and the raised base are respectively provided with mounting and adjustment waist-shaped holes.

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