Process device for welding complex special-shaped exhaust pipe

Abstract

The invention discloses a process device for welding complex special-shaped exhaust pipes, which comprises a clamp body, a plurality of positioning components and a plurality of fixing devices, the positioning components are mounted on a vertical plate of the clamp body, and the fixing devices are fixed on a bottom plate of the clamp body. The exhaust main pipe is placed on the fixing devices to be positioned and clamped, the needed exhaust pipe receiving disc is fixed to the vertical plate, one end of the exhaust branch pipe is in butt joint with the exhaust pipe receiving disc, the other end of the exhaust branch pipe is in butt joint with the exhaust main pipe, and the exhaust main pipe, the exhaust branch pipe and the exhaust pipe receiving disc are combined on the process device and then welded. The main exhaust pipe, the branch exhaust pipe and the exhaust pipe receiving disc are welded to form the exhaust pipe, joint leakage caused by stress vibration and interference of slightly-exposed waste gas on normal work of an engine are avoided, and the welding process is suitable for a welding process of an engine exhaust pipe of a certain model.

Description

Technical Field

[0001] This invention relates to the technical field of a special automatic welding device for irregularly shaped exhaust pipes, and in particular to a process device for welding complex irregularly shaped exhaust pipes. Background Technology

[0002] The exhaust pipe of a certain model of engine consists of three parts: the main exhaust pipe, the branch exhaust pipe, and the exhaust pipe connector (e.g.) Figure 1 After machining, the three parts are spot-welded together to form the exhaust pipe. Because each part is an irregular component, the welding process presents certain challenges. Traditional manual welding suffers from poor stability, and after a period of use, cracks easily form at the weld joints, affecting the overall engine performance. Therefore, a specialized welding device needs to be designed to meet the product processing requirements. Summary of the Invention

[0003] The technical problem to be solved by this application is that irregularly shaped exhaust pipes (such as those with multiple bends or asymmetrical structures) face difficulties in positioning when manually welded, require multiple measurements and adjustments during manual assembly, and result in unstable welding quality.

[0004] To solve the above-mentioned technical problems, this application provides a process apparatus for welding complex irregular exhaust pipes, comprising: a clamp body, including a base plate and a vertical plate perpendicular to the base plate, with a positioning plate fixedly attached to the front of the vertical plate; a plurality of positioning components, each positioning component including an end pressure plate and a flat pressure plate, wherein a plurality of exhaust pipe connectors are evenly arranged in a row along the length of the vertical plate in the middle of the positioning plate, the exhaust pipe connectors at both ends of the row are fixed to the positioning plate by the end pressure plates, the exhaust pipe connectors are connected and fixed to the positioning plate by the flat pressure plates, and each exhaust pipe connector is mated to one end of an exhaust branch pipe; and a plurality of fixing devices along... The base plate is evenly distributed along its length. The fixing device includes a fixing block and a clamping block that are connected together. The fixing block is fixed to the base plate, and the clamping block is slidably installed on the base plate. The clamping block and the fixing block are connected together. The upper part forms a groove that matches the circumference of the exhaust pipe, and the lower part forms a countersunk hole. A spring is built into the countersunk hole. One end of the spring abuts against the bottom of the countersunk hole of the fixing block, and the other end abuts against the countersunk hole on the back of the clamping block, forming a closed compression chamber. Bolts are added to the side of the clamping block. By screwing them in and out, the hole depth can be changed, and the thrust of the spring can be finely adjusted. The contact area between the clamping block and the base plate is equipped with a replaceable pad. The pad is fixed to the base plate and keeps it on the same plane.

[0005] In the process equipment, the exhaust main pipe is placed on several fixed devices. The adjusting bolts are used to press the clamping block against the exhaust main pipe under the spring force to complete the positioning and clamping. The required exhaust pipe connector is fixed on the positioning plate with the end pressure plate and the flat pressure plate. One end of the exhaust branch pipe is connected to the exhaust pipe connector and the other end is connected to the exhaust main pipe, thus completing the combination of the exhaust main pipe, exhaust branch pipe and exhaust pipe connector on the process equipment.

[0006] According to an embodiment of this application, the exhaust branch pipe is welded to the exhaust main pipe via a 45° angled short section.

[0007] According to an embodiment of this application, the connection between the exhaust pipe connector and the exhaust branch pipe is a flange connection or a threaded connection.

[0008] According to an embodiment of this application, the flat plate is rectangular, with flanges on both sides of the upper surface, and a through hole in the middle of the flat plate for screws to pass through.

[0009] According to an embodiment of this application, the end plate is a rectangular plate in whole. A protrusion is provided on one side of the upper surface of the end plate, and a waist hole is provided on the side of the end plate away from the protrusion. A high-strength screw is directly screwed into the waist hole so that the end plate and the end face of the part are in uniform contact without obvious gaps.

[0010] According to an embodiment of this application, the fixing block is higher than the clamping block.

[0011] According to an embodiment of this application, the back side of the upright plate is provided with stiffening ribs.

[0012] According to an embodiment of this application, the pad is fixed to the base plate with screws, and the positioning plate is also fixed to the upright plate with screws.

[0013] According to an embodiment of this application, the diameter of the countersunk hole is 0.5-1 mm larger than the outer diameter of the spring.

[0014] According to an embodiment of this application, when the exhaust pipe is placed in the groove, its center is located in the groove and below the top of the clamping block.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] 1. The process apparatus of this application is used for welding irregularly shaped exhaust pipes. This welding apparatus solves the problems of rapid spatial positioning, simultaneous fixing of multiple pipe sections, and control of welding deformation in manual welding of irregularly shaped exhaust pipes.

[0017] 2. In the process apparatus of this application, the exhaust pipe connector is first fixed on the positioning plate of the vertical plate, and then the exhaust pipe main pipe is fixed on the bottom plate. Then, the two ends of the exhaust pipe branch pipe are respectively connected to the exhaust pipe connector and the exhaust pipe main pipe, which satisfies the composition requirements of the exhaust main pipe, exhaust branch pipe and exhaust pipe connector of a certain type of engine exhaust pipe. The design of this welding device completes the welding of each component of the exhaust pipe on the device, which not only ensures product quality, but also improves processing efficiency.

[0018] 3. In this application, a replaceable and wear-resistant pad is added between the base plate and the sliding clamping block of the process device. This can improve the service life of the device during the replacement of the exhaust pipe. If the pad is severely worn, it can be replaced in time to ensure the clamping accuracy of the parts. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application, and are not intended to limit this application.

[0020] Figure 1 This is a schematic diagram of the exhaust pipe structure of a certain type of engine in the prior art;

[0021] Figure 2 This is a side sectional view of a process apparatus for welding complex irregular exhaust pipes, as exemplified by the present invention.

[0022] Figure 3 This is a front view of a process apparatus for welding complex irregular exhaust pipes, as exemplified by the present invention.

[0023] Figure 4 This is a side sectional view of the end pressure plate in a process apparatus for welding complex irregular exhaust pipes, as exemplified by the present invention.

[0024] Figure 5 This is a top view of the end pressure plate in a process apparatus for welding complex irregular exhaust pipes, as exemplified by the present invention.

[0025] Figure 6 This is a side sectional view of a flat pressure plate in a process apparatus for welding complex irregular exhaust pipes, as exemplified by the present invention.

[0026] Figure 7 This is a top view of a flat pressure plate in a process apparatus for welding complex irregular exhaust pipes, as exemplified by the present invention.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1. Exhaust main pipe, 2. Exhaust branch pipe, 3. Exhaust pipe connector, 10. Fixture body, 11. Base plate, 12. Positioning plate, 13. Vertical plate, 14. Fixing block, 15. Clamping block, 22. End pressure plate, 23. Flat pressure plate, 111. Pad block, 112. Screw, 151. Bolt, 221. Waist hole, 231. Through hole. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains. The terms “first,” “second,” and similar terms used in the specification and claims of this patent application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a,” and similar terms, do not indicate a limitation of quantity, but rather indicate the presence of at least one.

[0031] according to Figures 1 to 7 As shown in the illustration, this application provides a process apparatus for welding complex, irregularly shaped exhaust pipes. The apparatus includes a fixture body, several positioning components, and several fixing devices. The positioning components are mounted on the upright plate of the fixture body, and the fixing devices are fixed to the base plate of the fixture body. The main exhaust pipe 1 is positioned and clamped on the fixing devices. The required exhaust pipe connector 3 is fixed on the upright plate. One end of the exhaust branch pipe 2 is connected to the exhaust pipe connector 3, and the other end is connected to the main exhaust pipe 1, completing the assembly of the main exhaust pipe 1, exhaust branch pipe 2, and exhaust pipe connector 3 on the process apparatus, followed by welding. Welding the main exhaust pipe 1, exhaust branch pipe 2, and exhaust pipe connector 3 together forms the exhaust pipe, preventing leaks at the joints due to stress and vibration, and avoiding any leakage of exhaust gas that could interfere with the normal operation of the engine.

[0032] In this embodiment, the fixture body 10 includes a base plate 11 and a vertical plate 13 perpendicular to the base plate. A positioning plate 12 is fixedly attached to the front of the vertical plate 13.

[0033] Specifically, the positioning plate 12 is fixed to the upright plate 13 with screws 112.

[0034] Specifically, the back of the upright plate 13 is provided with stiffening plates to further fix the upright plate 13.

[0035] In this embodiment, the positioning plate 12 is provided with several positioning components, including an end pressure plate 22 and a flat pressure plate 23. Several exhaust pipe connectors 3 are evenly arranged in a row along the length of the vertical plate 13 in the middle of the positioning plate 12. The exhaust pipe connectors 3 at the beginning and end of the row are fixed to the positioning plate 12 by the end pressure plate 22. The exhaust pipe connectors 3 are connected and fixed to the positioning plate 12 by the flat pressure plate 23. Each exhaust pipe connector 3 is connected to and fixed to one end of an exhaust branch pipe 2.

[0036] Specifically, such as Figure 6 , Figure 7 As shown, the flat pressure plate 23 is rectangular, with flanges on both sides of the upper surface. A through hole 231 is provided in the middle of the flat pressure plate for the screw 112 to pass through. In use, the two ends of the flat pressure plate press against the adjacent exhaust pipe connector 3, and the screw 112 is inserted into the through hole 231 in the middle to fix it on the positioning plate 12. Several flat pressure plates 23 are all horizontally located on the center line of several exhaust pipe connectors 3.

[0037] Specifically, such as Figure 4 , Figure 5 As shown, the end pressure plate 22 is a rectangular plate. A protrusion is provided on one side of the upper surface of the end pressure plate 22, and a waist hole 221 is provided at the end of the end pressure plate 22 away from the protrusion. High-strength screws are directly screwed into the waist hole 221 to ensure uniform contact between the end pressure plate 22 and the end face of the part without any obvious gaps. In use, part of the waist hole 221 of the end pressure plate 22 is pressed against the edge of the exhaust pipe connector 3, and the other part is screwed into the screw 112 to fix it to the positioning plate 12.

[0038] Specifically, there are three exhaust pipe connectors 3 arranged horizontally side by side. Each exhaust pipe connector 3 at the beginning and end is fixed with an end pressure plate 22, and the three exhaust pipe connectors 3 are fixedly connected by two flat pressure plates 23.

[0039] In this embodiment, as Figure 2 , Figure 3 As shown, several fixing devices are evenly arranged on the base plate 11 along its length. Each fixing device includes a fixing block 14 and a clamping block 15 connected together. The fixing block 14 is fixed to the base plate 11, and the clamping block 15 is slidably installed on the base plate 11. The clamping block 15 is connected to the fixing block 14, forming a groove at the top that matches the circumference of the exhaust pipe 1, and a countersunk hole at the bottom. A spring is installed inside the countersunk hole. One end of the spring abuts against the bottom of the countersunk hole of the fixing block 14, and the other end abuts against the countersunk hole on the back of the clamping block, forming a closed compression chamber. Bolts are added to the side of the clamping block, and screwing them in or out changes the hole depth, thereby achieving fine adjustment of the spring's thrust. A replaceable pad 111 is provided at the contact point between the clamping block 15 and the base plate 11. The pad 111 is fixed to the base plate 11 and kept on the same plane as it.

[0040] Specifically, the diameter of the countersunk hole is 0.5-1mm larger than the outer diameter of the spring.

[0041] Specifically, the fixing block 14 forming the groove is higher than the clamping block 15. When the exhaust pipe 1 is placed in the groove, its center is located in the groove and lower than the top of the clamping block 15. This design makes the exhaust pipe 1 more stable when placed.

[0042] Specifically, the pad 111 is fixed to the base plate 11 by screws 112. Since the clamping block 15 placed on the base plate needs to be moved and adjusted multiple times during the welding process to pick up and put down the exhaust pipe 1, it will cause wear to the base plate 11. Therefore, an easily replaceable and wear-resistant pad 111 is added to the base plate 11. This can improve the service life of the fixture body during the replacement of the exhaust pipe 1. If the pad 111 is severely worn, it can be replaced in time to ensure the clamping accuracy of the parts.

[0043] In the process equipment, the exhaust main pipe 1 is placed on several fixed devices. The adjusting bolt 151 is used to press the clamping block 15 against the exhaust main pipe 1 under the spring force to complete the positioning and clamping. The required exhaust pipe connector 3 is fixed on the positioning plate 12 by the end pressure plate 22 and the flat pressure plate 23. One end of the exhaust branch pipe 2 is connected to the exhaust pipe connector 3 and the other end is connected to the exhaust main pipe 1, thus completing the combination of the exhaust main pipe 1, the exhaust branch pipe 2, and the exhaust pipe connector 3 on the process equipment.

[0044] Specifically, exhaust manifold 2 is welded to the main exhaust manifold via a 45° angled short section.

[0045] Specifically, the connection between the exhaust pipe connector 3 and the exhaust branch pipe 2 is a flange or threaded connection.

[0046] In this embodiment, the process of using a process device for welding complex irregular exhaust pipes is as follows: First, the designed positioning plate 12 is fixed on the upright plate 13 of the fixture body 10; after the exhaust pipe connector 3 is placed on the positioning plate 12, the three exhaust pipe connectors 3 are fixed with the end pressure plate 22 and the flat pressure plate 23, and fastened to the body with bolts 151 to ensure that the position of the component does not change; the main exhaust pipe 1 is placed on the fixing device of the base plate 11, and the bolts 151 are adjusted according to the pipe diameter to drive the internal spring to fix the main pipe, ensuring that the exhaust branch pipe 2 and the exhaust pipe connector 3 and the exhaust main pipe 1 are accurately connected; after the exhaust pipe connector 3 and the exhaust main pipe 1 are fixed, the two ends of the exhaust branch pipe 2 are connected to the two respectively, and finally welding is performed to complete the assembly of the components.

[0047] In summary, the technical solution of this application has the following beneficial effects:

[0048] 1. The process apparatus of this application is used for welding irregularly shaped exhaust pipes. This welding apparatus solves the problems of rapid spatial positioning, simultaneous fixing of multiple pipe sections, and control of welding deformation in manual welding of irregularly shaped exhaust pipes.

[0049] 2. In the process apparatus of this application, the exhaust pipe connector is first fixed on the positioning plate of the vertical plate, and then the exhaust pipe main pipe is fixed on the bottom plate. Then, the two ends of the exhaust pipe branch pipe are respectively connected to the exhaust pipe connector and the exhaust pipe main pipe, which satisfies the composition requirements of the exhaust main pipe, exhaust branch pipe and exhaust pipe connector of a certain type of engine exhaust pipe. The design of this welding device completes the welding of each component of the exhaust pipe on the device, which not only ensures product quality, but also improves processing efficiency.

[0050] 3. In this application, a replaceable and wear-resistant pad is added between the base plate and the sliding clamping block of the process device. This can improve the service life of the device during the replacement of the exhaust pipe. If the pad is severely worn, it can be replaced in time to ensure the clamping accuracy of the parts.

[0051] The above are merely exemplary embodiments of this application and are not intended to limit the scope of protection of this application, which is determined by the appended claims.

Claims

1. A process apparatus for welding of complex exhaust manifold, characterized in that, The utility model relates to a kind of exhaust pipe positioning and clamping device, including: Clamp body, including bottom plate, with the vertical bottom plate vertical plate, the front surface of the vertical plate is fixed with fixed plate attached; Several positioning components, the positioning component includes end pressing plate and flat pressing plate, several exhaust pipe connecting plates are evenly arranged into a column along the length direction of the vertical plate in the middle of the fixed plate, the exhaust pipe connecting plate at both ends of the column is fixed on the fixed plate by end pressing plate, the exhaust pipe connecting plate is connected by flat pressing plate between and fixed on the fixed plate, each exhaust pipe connecting plate is fixed to one end of one exhaust branch pipe; Several fixing devices are evenly arranged on the bottom plate along the length direction of the bottom plate, and the fixing device includes fixed block and clamp block, the fixed block is fixed on the bottom plate, the clamp block is slidably mounted on the bottom plate, the clamp block is connected with the fixed block, the upper part forms a groove matched with the circumference of exhaust main pipe, the lower part forms a counter-bore, the counter-bore is provided with a spring, one end of the spring abuts against the bottom of the counter-bore of the fixed block, and the other end abuts against the counter-bore on the back of the clamp block, forming a closed compression chamber, a bolt is arranged on the side surface of the clamp block, and the hole depth is changed by screwing in and out to realize the fine adjustment of the thrust of the spring. Wherein, the contact kitchen of the clamp block and the bottom plate is provided with replaceable pad block, and the pad block is fixed on the bottom plate and maintains the same plane with the bottom plate. Wherein, when using the process device, the exhaust main pipe is placed on the several fixing devices, the bolt is adjusted, the clamp block is pressed to the exhaust main pipe under the spring thrust, the positioning is completed, the required exhaust pipe connecting plate is fixed on the fixed plate by the end pressing plate and the flat pressing plate, one end of the exhaust branch pipe is connected with the exhaust pipe connecting plate, and the other end is connected with the exhaust main pipe, and the combination of the exhaust main pipe, the exhaust branch pipe and the exhaust pipe connecting plate on the process device is completed.

2. A process set for welding of complex exhaust manifold as claimed in claim 1 wherein, The exhaust branch pipe is welded on the exhaust main pipe through a 45° inclined angle short section.

3. A process set for welding of complex exhaust pipe as claimed in claim 1 wherein, The connection between the exhaust pipe connecting plate and the exhaust branch pipe is flange or threaded connection.

4. A process set for welding of complex exhaust pipe as claimed in claim 1 wherein, The flat pressing plate is a rectangular cuboid, and flanges are arranged on the upper surfaces of both sides.

5. A process assembly for welding of complex exhaust manifold as claimed in claim 1 wherein, The end pressing plate is a rectangular plate, one side of the upper surface of the end pressing plate is provided with a protrusion, the side away from the protrusion of the end pressing plate is provided with a waist hole, and a high-strength screw is directly screwed into the waist hole to make the end pressing plate uniformly contact with the part end surface without obvious gap.

6. A process set for welding of complex exhaust pipe as claimed in claim 1 wherein, The fixed block is higher than the clamp block.

7. A process assembly for welding of complex exhaust manifold as claimed in claim 1 wherein, The back side of the vertical plate is provided with a rib plate.

8. A process assembly for welding of complex exhaust manifold as claimed in claim 1 wherein, The pad block is fixed on the bottom plate by a screw, and the fixed plate is also fixed on the vertical plate by a screw.

9. A process assembly for welding of complex exhaust manifold as claimed in claim 1 wherein, The hole diameter of the counter-bore is 0.5-1mm larger than the outer diameter of the spring.

10. A process assembly for welding of complex exhaust manifold as claimed in claim 1 wherein, When the exhaust main pipe is placed in the groove, the center is located in the groove and lower than the top end of the clamp block.

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