Central shaft device control runner vertical plate and welding process thereof

Abstract

The invention relates to the technical field of assembling and welding, and discloses a center shaft device control runner vertical plate and a welding technology thereof.The center shaft device control runner vertical plate comprises a center pipe, a steel pipe is arranged on the outer circle face of the center pipe, workpiece baffles are symmetrically arranged in the middle of the steel pipe, and a supporting plate is arranged between the two workpiece baffles; a first tool and a second tool are sequentially arranged on the workpiece baffle from right to left, the first tool is symmetrically arranged on the outer circle face of the steel pipe, the second tool is symmetrically arranged on the end face of the steel pipe, a runner plate is arranged on the end face of the second tool and the end face of the first tool in a penetrating mode, and the runner plate is fixedly connected with the steel pipe. The runner plate is limited through the through hole and the inner wall of the hole, and the situation that in the welding process of the runner plate, wave deformation of the runner plate is caused, later-period repairing and correcting are difficult, then assembling and welding of other parts are affected, and the size precision, the assembling performance and the appearance quality of a product are affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical fields of assembly and welding, and particularly relates to a control flow channel vertical plate of a central shaft device and its welding process. Background Art

[0002] The central shaft device is the most important part of a filter. The filter realizes the filtering process by the rotation of the central shaft to drive the filter disc to rotate. The central shaft device is composed of a combination of various materials such as carbon steel and alloy forgings, and is formed by welding, hot fitting, etc. The length of the workpiece is slender, easy to deform, and has high precision requirements, which is a key component of the product. The manufacturing process of the workpiece is from the central tube → shaft body welding → central shaft → hot fitting drawing of the central shaft support sleeve → central shaft device, and welding, machining, and assembly are carried out back and forth many times during the manufacturing process.

[0003] During the welding process, a large amount of heat input will cause the weld and the nearby area to expand when heated, and contract when cooled. Due to the uneven heating of the weld and its surroundings, the contraction degree after cooling is also different, which will lead to various welding deformations such as transverse contraction, longitudinal contraction, and angular deformation. This will cause the 8-mm-thick flow channel vertical plate to have a wavy deformation, and it is difficult to repair and correct in the later stage, which will affect the assembly welding of the remaining parts, and thus affect the dimensional accuracy, assembly performance, and appearance quality of the product.

[0004] Therefore, a control flow channel vertical plate of a central shaft device and its welding process are provided to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a control flow channel vertical plate of a central shaft device and its welding process to solve the problems mentioned in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: including a central tube, a steel tube is arranged on the outer circumferential surface of the central tube, workpiece baffles are symmetrically arranged in the middle part of the steel tube, a support plate is arranged between the two workpiece baffles, a first tooling and a second tooling are arranged on the workpiece baffle from right to left in sequence. The first tooling is symmetrically arranged on the outer circumferential surface of the steel tube, the second tooling is symmetrically arranged on the end face of the steel tube, a flow channel plate penetrates through the end faces of the second tooling and the first tooling, and the flow channel plate is fixedly connected with the steel tube.

[0007] Preferably, the support plate is fixedly connected with the steel tube, and both ends of the support plate are fixedly connected with the workpiece baffle.

[0008] Preferably, a circumferentially arrayed through hole is opened on the end face of the first tooling, and the bottom end of the through hole is open.

[0009] Preferably, the end face of the second tooling is provided with circumferentially-arrayed through holes which are collinear with the central axis of the through hole, and the flow channel plate passes through the through holes and is fixed to the outer circular surface of the steel pipe.

[0010] Preferably, the flow channel plate is composed of a first vertical plate, a second vertical plate and a cross plate. The height of the first vertical plate is higher than that of the second vertical plate. The inner side of the first vertical plate is fixedly connected to the end face of the workpiece baffle. The cross plate passes through the through holes and is fixed to the outer circular surface of the steel pipe. The top end of the cross plate is connected to the second vertical plate, and the second vertical plate is located inside the through hole of the first tooling.

[0011] A welding process for controlling the flow channel vertical plate by a central axis device, and the welding process steps include: S1. Sleeving the steel pipe on the outer circular surface of the central pipe for the installation of the workpiece baffle, the first tooling, the second tooling and the flow channel plate;

[0012] S2. Fixing the workpiece baffle on the outer circular surface of the steel pipe. The two workpiece baffles are symmetrically distributed in the middle part of the steel pipe. Secondly, the first tooling and the second tooling are sequentially arranged on the end faces of the two workpiece baffles away from each other;

[0013] S3. The central axes of the through hole of the first tooling and the holes of the second tooling are collinear, and the flow channel plate is inserted into the through hole and the holes. The included angle between two adjacent sides of the flow channel plate is 4-8 degrees.

[0014] Preferably, the included angle between two adjacent holes of the through hole of the first tooling and the holes of the second tooling is 4-8 degrees.

[0015] Preferably, the sum of the height of the second vertical plate and the height of the cross plate is less than the length of the inner walls of the through hole and the holes.

[0016] Preferably, the length of the first vertical plate is less than the length of the inner walls of the through hole and the holes.

[0017] The technical effects and advantages of the present invention:

[0018] 1. During the welding process of the present invention, a large amount of heat input will cause the weld and the nearby areas to expand when heated and contract when cooled. Due to the uneven heating of the weld and its surroundings, the shrinkage degrees after cooling are also different, which will lead to various welding deformations such as transverse shrinkage, longitudinal shrinkage and angular deformation. By limiting the flow channel plate through the inner walls of the through hole and the holes, it is avoided that the flow channel plate generates wavy deformation during the welding process, and it is difficult to repair and correct in the later stage, which will affect the assembly welding of the remaining parts, and thus affect the dimensional accuracy, assembly performance and appearance quality of the product.

[0019] 2. The assembly process plan of the flange plate and the flow channel vertical plate of the present invention ensures the assembly accuracy of 120 flow channel vertical plates.

[0020] 3. The present invention designs a radial flow channel tooling to ensure the assembly accuracy of the flow channel vertical plate, increase the structural rigidity, and control the welding deformation of the flow channel. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the central tube and steel tube structure of the present invention.

[0023] Figure 3 It is a schematic diagram of the connection structure of the workpiece baffle, tooling and steel tube of the present invention.

[0024] Figure 4 It is a schematic diagram of the connection structure between the tooling and the flow channel plate of the present invention.

[0025] Figure 5 It is a schematic diagram of the flow channel plate structure of the present invention.

[0026] Figure 6 It is the position line of the flow channel plate welding of the present invention.

[0027] Figure 7 It is the assembly drawing of the position of the flow channel plate and the second tooling of the present invention.

[0028] In the figure: 1. Central tube; 2. Steel tube; 3. Second tooling; 4. First tooling; 5. Workpiece baffle; 6. Support plate; 7. Flow channel plate. Detailed Embodiment

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. 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 embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] The present invention provides a central axis device for controlling a flow channel vertical plate as shown in Figures 1 to 7 , which includes a central tube 1. An outer circular surface of the central tube 1 is provided with a steel tube 2. Workpiece baffles 5 are symmetrically arranged at an intermediate portion of the steel tube 2. A support plate 6 is arranged between the two workpiece baffles 5. A first tooling 4 and a second tooling 3 are sequentially arranged on the workpiece baffle 5 from right to left. The first tooling 4 is symmetrically arranged on the outer circular surface of the steel tube 2, and the second tooling 3 is symmetrically arranged on an end surface of the steel tube 2. A flow channel plate 7 penetrates through end surfaces of the second tooling 3 and the first tooling 4, and the flow channel plate 7 is fixedly connected to the steel tube 2.

[0031] The steel pipe 2 of the central pipe 1 fixes the components. The workpiece baffles 5 on the outer circumferential surface of the steel pipe 2 are symmetrically arranged. The two workpiece baffles 5 are fixedly connected to the steel pipe 2. The support plate 6 is fixedly connected to the steel pipe 2. The two ends of the support plate 6 are fixedly connected to the workpiece baffles 5. The support plate 6 between the two workpiece baffles 5 supports the workpiece baffles 5 to prevent the two workpiece baffles 5 from deforming during use. The support plates 6 are circumferentially and arrayed on the outer circumferential surface of the steel pipe 2, making the connection between the two workpiece baffles 5 and the steel pipe 2 tighter.

[0032] On both sides of the two workpiece baffles 5 are the first tooling 4 and the second tooling 3 respectively. The first tooling 4 slides on the outer circumferential surface of the steel pipe 2. The second tooling 3 passes through the central pipe 1 and is fixed to the end face of the steel pipe 2. Then, the runner plate 7 passes through the end faces of the first tooling 4 and the second tooling 3, and the runner plate 7 is fixed on the outer circumferential surface of the steel pipe 2.

[0033] Furthermore, the end face of the first tooling 4 is provided with circumferentially arrayed through holes, and the bottom ends of the through holes are open.

[0034] The end face of the second tooling 3 is provided with circumferentially arrayed through holes, and the axes of the holes are collinear with the through holes. The runner plate 7 passes through the holes and the through holes and is fixed to the outer circumferential surface of the steel pipe 2.

[0035] The through holes on the end face of the first tooling 4 have open bottoms, which is convenient for the runner plate 7 to slide on the outer circumferential surface of the steel pipe 2. The runner plate 7 is slidably installed at a specified position, avoiding the bottom end of the through hole affecting the sliding of the runner plate 7.

[0036] The second tooling 3 is located at the end face of the steel pipe 2. The inner bottom end of the hole of the second tooling 3 is flush with the outer circumferential surface of the steel pipe 2 and is on the same horizontal line, which is convenient for the runner plate 7 to pass through the through holes and the holes and connect with the outer surface of the steel pipe 2. At the same time, the inner walls of the through holes and the holes limit the runner plate 7, which is convenient for the runner plate 7 to be welded on the outer circumferential surface of the steel pipe 2.

[0037] During the welding process, a large amount of heat input will cause the weld and the nearby area to expand when heated and contract when cooled. Due to the uneven heating of the weld and its surroundings, the degree of shrinkage after cooling is also different, which will lead to various welding deformations such as transverse shrinkage, longitudinal shrinkage and angular deformation. By limiting the runner plate 7 through the inner walls of the through holes and the holes, it is avoided that the runner plate 7 generates wave deformation during the welding process, and it is difficult to repair and correct in the later stage, which will affect the assembly welding of the remaining parts, and this will affect the dimensional accuracy, assembly performance and appearance quality of the product.

[0038] Further, the flow channel plate 7 is composed of a first vertical plate, a second vertical plate, and a cross plate. The height of the first vertical plate is higher than that of the second vertical plate. The inner side of the first vertical plate is fixedly connected to the end face of the workpiece baffle 5. The cross plate passes through the hole and the through hole and is fixedly connected to the outer cylindrical surface of the steel pipe 2. The top end of the cross plate is connected to the second vertical plate, and the second vertical plate is located inside the through hole of the first tooling 4.

[0039] The side of the first vertical plate of the flow channel plate 7 is connected to the cross plate, and the other side is fixedly connected to the side of the workpiece baffle 5. The top end of the cross plate is connected to the second vertical plate. The height of the first vertical plate is lower than the height of the inner wall of the hole and the through hole. The sum of the height of the cross plate and the height of the second vertical plate is lower than the height of the inner wall of the hole and the through hole, which is convenient for the flow channel plate 7 to pass through the hole and the through hole.

[0040] Embodiment

[0041] The tooling for welding the steel pipe 2 is welded at both ends of the central pipe 1. As shown in Figure 2 According to the weight of the central axis 1 device and the size of the turning tire, it is confirmed that the specification of the steel pipe 2 is φ450X36 l = 350. Before welding, the rust and oil on the central pipe 1 are polished, and then the central pipe 1 is lifted and placed on the turning tire. The turning tire is used to ensure the smooth rotation of the central axis, and the angle can be flexibly adjusted during the assembly welding process, so that the operator does not need to frequently move or readjust the welded parts, thus realizing continuous and smooth assembly welding operations, greatly improving the assembly welding efficiency and quality. According to the product structure design, a radial flow channel tooling, a workpiece baffle 5, a first tooling 4, and a second tooling 3, a total of six pieces. The positions of the workpiece baffle 5 and the first tooling 4 are in the middle of the central pipe 1, and the second tooling 3 is at both ends of the steel pipe 2, respectively, with a radial flow channel. Laser gas cutting is used for blanking to ensure the indexing accuracy of the flow channel. As shown in Figure 3 。

[0042] The first tooling 4 of the radial flow channel has a thickness δ = 10mm, a material: Q235B, a flange outer diameter = the diameter of the central pipe 1 + the width of the flow channel vertical plate * 2 + 110mm, an inner diameter = the diameter of the central pipe 1 - 4mm. 60 radial notches are cut by laser. The notches are provided with a certain adjustment amount according to the size of the flow channel plate 7. The width of the notches is made according to the thickness of the flow channel vertical plate + 2mm for the radial notches, and the notch length = the width of the flow channel vertical plate + 30mm. The number of notches is the same as the number of single - loop flow channel plates 7. As shown in Figure 4 At the middle position of the central pipe 1, the first tooling 4 of the radial flow channel is assembled. The end face of the first tooling 4 is perpendicular to the axial direction of the central pipe 1. The indexing lines on the tooling correspond to the two workpiece baffles 5 respectively, and are spot - welded firmly. As shown in Figure 6 shown.

[0043] The second tooling 3 for the radial flow channel is located at the end face of the steel pipe 2. Due to different positions, the structure is different from that of the first tooling 4 for the radial type in the following aspects: the inner diameter ≈ the diameter of the central pipe 1 - 110 mm, and it is necessary to avoid the hole positions on the end cover. The specific position is adjusted according to the hole size. The notch length = the width of the flow channel vertical plate + 60 mm, with 30 mm reserved on each of the upper and lower sides. See Figure 7 。

[0044] Welding process

[0045] S1. Slip the steel pipe 2 onto the outer cylindrical surface of the central pipe 1 for the installation of the workpiece baffle 5, the first tooling 4, the second tooling 3, and the flow channel plate 7.

[0046] S2. Fix the workpiece baffle 5 on the outer cylindrical surface of the steel pipe 2. The two workpiece baffles 5 are symmetrically distributed in the middle part of the steel pipe 2. Secondly, the first tooling 4 and the second tooling 3 are sequentially arranged on the two workpiece baffles 5 away from the end face.

[0047] S3. The central axes of the through holes of the first tooling 4 and the holes of the second tooling 3 are collinear. The flow channel plate 7 is inserted into the through holes of the first tooling 4 and the holes of the second tooling 3. The included angle between two adjacent sides of the flow channel plate 7 is 6 degrees.

[0048] The included angle between two adjacent through holes of the first tooling 4 and the holes of the second tooling 3 is 6 degrees. The flow channel plate 7 needs to be inserted into the through holes of the first tooling 4 and the holes of the second tooling 3. Therefore, the included angle between two adjacent sides of the flow channel plate 7 is 6 degrees, which avoids the wave deformation of the flow channel plate 7 during the welding process, and it is difficult to repair and correct later, which will affect the assembly welding of the remaining parts, thus affecting the dimensional accuracy, assembly performance, and appearance quality of the product.

[0049] The included angle between two adjacent sides of the flow channel plate 7 is 6 degrees. Therefore, the installation quantity of one - side flow channel plates 7 is 60 pieces, and the installation quantity of two - side flow channel plates 7 is 120 pieces. By the included angle of 6 degrees between two adjacent through holes and holes, the installation accuracy of 60 pieces of flow channel plates 7 on one side and 120 pieces of flow channel plates 7 on two sides is ensured.

[0050] Finally, it should be noted that the above - mentioned are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A control flow channel vertical plate of a central axis device, characterized in that: It includes a central pipe (1), on the outer circumferential surface of which there is a steel pipe (2). At the middle part of the steel pipe (2), workpiece baffles (5) are symmetrically arranged. Between the two workpiece baffles (5), there is a support plate (6). From right to left, a first tooling (4) and a second tooling (3) are successively arranged on the workpiece baffle (5). The first tooling (4) is symmetrically arranged on the outer circumferential surface of the steel pipe (2), and the second tooling (3) is symmetrically arranged on the end face of the steel pipe (2). A runner plate (7) is arranged through the end faces of the second tooling (3) and the first tooling (4), and the runner plate (7) is fixedly connected to the steel pipe (2).

2. A control flow channel vertical plate of a central shaft device according to claim 1, characterized in that: The support plate (6) is fixedly connected to the steel pipe (2), and both ends of the support plate (6) are fixedly connected to the workpiece baffle (5).

3. A control flow channel vertical plate of a central shaft device according to claim 1, characterized in that: On the end face of the first tooling (4), there are circumferentially arrayed through holes, and the bottom ends of the through holes are open-ended.

4. A control flow channel vertical plate of a central shaft device according to claim 3, characterized in that: On the end face of the second tooling (3), there are circumferentially arrayed through holes, and the axes of these holes are collinear with the axes of the through holes. The runner plate (7) passes through the holes and the through holes and is fixedly connected to the outer circumferential surface of the steel pipe (2).

5. A control flow channel vertical plate of a central shaft device according to claim 4, characterized in that: The runner plate (7) is composed of a first vertical plate, a second vertical plate and a horizontal plate. The height of the first vertical plate is higher than that of the second vertical plate. The inner side of the first vertical plate is fixedly connected to the end face of the workpiece baffle (5). The horizontal plate passes through the holes and the through holes and is fixedly connected to the outer circumferential surface of the steel pipe (2). The top end of the horizontal plate is connected to the second vertical plate, and the second vertical plate is located inside the through hole of the first tooling (4).

6. A welding process for the vertical plate of the control flow channel of a central shaft device, which is implemented according to the vertical plate of the control flow channel of a central shaft device described in any one of claims 1-5: It is characterized in that: The welding process steps include: S1. Sleeving the steel pipe (2) on the outer circumferential surface of the central pipe (1) for the installation of the workpiece baffle (5), the first tooling (4), the second tooling (3) and the runner plate (7); S2. Fixing the workpiece baffle (5) on the outer circumferential surface of the steel pipe (2). The two workpiece baffles (5) are symmetrically distributed at the middle part of the steel pipe (2). Secondly, the first tooling (4) and the second tooling (3) are successively arranged on the end faces of the two workpiece baffles (5) away from each other; S3. The axes of the through holes of the first tooling (4) and the holes of the second tooling (3) are collinear, and the runner plate (7) is inserted into the through holes and the holes. The included angle between two adjacent runner plates (7) is 4 - 8 degrees.

7. A welding process for the control flow channel vertical plate of a central shaft device according to claim 6, characterized in that: The included angle between two adjacent through holes of the first tooling (4) and the holes of the second tooling (3) is 4 - 8 degrees.

8. A welding process for the control flow channel vertical plate of a central shaft device according to claim 6, characterized in that: The sum of the height of the second vertical plate and the height of the horizontal plate is less than the length of the inner walls of the through holes and the holes.

9. A welding process for a control flow channel vertical plate of a central shaft device according to claim 8, characterized in that: The length of the first vertical plate is less than the length of the inner walls of the through holes and the holes.

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