A yank cylinder siphon manufacturing tool

Abstract

The utility model discloses a yunker jar siphon pipe manufacturing frock relates to high -speed paper machine technical field, include: guide sleeve, three step holes are arranged to guide sleeve along the axial direction, and are used for the positioning of the end of siphon pipe, middle part and bolt respectively, positioning ring, the positioning ring sets up in the top of guide sleeve, is used for the concentricity of the bolt body with guide sleeve is restricted, fixture positioning surface, fixture positioning surface sets up in the outside of guide sleeve, the utility model provides technical scheme in, three step holes are arranged to guide sleeve, and are respectively end minimum hole, intermediate free hole and upper positioning hole, and are used for the end position of siphon pipe, allow middle deviation and place bolt and ensure its concentricity with siphon pipe respectively. This multistage structure design makes the positioning in the drilling process more accurate, and the consistency and accuracy of drilling position are improved greatly.

Description

Technical Field

[0001] This utility model relates to the field of high-speed papermaking machine technology, and in particular to a tooling for manufacturing Yankee cylinder siphon tubes. Background Technology

[0002] The siphon is the core component for drainage in the Yankee dryer. During operation, steam entering the dryer is condensed and distributed within grooves on the inner wall of the dryer. Under centrifugal force, the condensate forms a water ring along the grooves. The siphon, fixed to the collection box, extends its end into the grooves. A constant distance between the siphon and the grooves is maintained by adjusting the pressure blocks. The siphon rotates synchronously with the dryer, using pressure differential to lift the condensate from the grooves to the collection box, then to the central drain pipe of the dryer, and finally discharge it through the rotary joint on the drainage side.

[0003] The siphon tube is made of seamless tube welded together with bolts. A hole is drilled in the center of the bolt, the seamless tube is inserted, and the end is welded around the entire circumference; the process is relatively simple. However, problems were found during the assembly of the welded siphon tubes into the Yankee tank. The siphon tube openings were tilted and upturned, affecting installation accuracy and making it impossible to guarantee that all siphon tubes were at the same distance from the bottom of the trench. Inspection revealed that the seamless tube and bolt were not concentric, mainly because the drilling error in the center of the bolt also caused the end of the siphon tube to deviate after being directly inserted into the bolt. During installation, the bolt and water collection box positions were fixed, but due to manufacturing errors, the distance between the siphon tube end and the trench could not be accurately guaranteed.

[0004] The low pass rate resulted in scrap and affected production schedule. Therefore, a tooling for manufacturing Yankee cylinder siphon tubes was proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a tooling for manufacturing Yankee cylinder siphon tubes, so as to solve the problems in the background art.

[0006] In view of this, the present invention provides a tooling for manufacturing a Yankee cylinder siphon tube, comprising:

[0007] The guide sleeve has three stepped holes along the axial direction, which are used to constrain the end, middle and bolt positioning of the siphon tube respectively;

[0008] A positioning ring is disposed on the top of the guide sleeve to constrain the concentricity of the bolt body and the guide sleeve;

[0009] The fixture positioning surface is located on the outside of the guide sleeve.

[0010] Optionally, the three stepped holes of the guide sleeve include:

[0011] The minimum end hole is used to constrain the position of the siphon tube end and maintain a constant distance from the bottom of the trench;

[0012] The central free hole is used to allow for deviations in the middle of the siphon tube caused by bolt misalignment or its own bending.

[0013] The upper positioning hole is used to place the bolt and cooperate with the positioning ring to achieve the concentricity of its axis with the siphon tube.

[0014] Optionally, the minimum hole at the end of the guide sleeve matches the siphon tube.

[0015] Optionally, the diameter of the intermediate free hole is larger than the outer diameter of the siphon tube.

[0016] Optionally, the inner ring of the positioning ring is provided with an annular protrusion, which is fitted into the upper positioning hole.

[0017] Optionally, the positioning surface of the clamp is a plane, used to cooperate with clamps such as bench vises to fix the guide sleeve.

[0018] Optionally, the end face of the bolt is provided with a weld.

[0019] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages:

[0020] 1. This utility model discloses a tooling for manufacturing a Yankee cylinder siphon tube. The guide sleeve has three stepped holes: a minimum end hole, a middle free hole, and an upper positioning hole. These holes are used to constrain the end position of the siphon tube, allow for mid-range deviation, and place bolts while ensuring concentricity with the siphon tube. This multi-stage structural design makes positioning during drilling more accurate, greatly improving the consistency and accuracy of the drilling position. Furthermore, the design of the middle free hole takes into account the possible bending tolerance range of the siphon tube, allowing for a certain degree of offset without affecting the overall processing quality, thus enhancing the adaptability and practicality of the tooling.

[0021] 2. The Yankee cylinder siphon tube manufacturing fixture of this utility model ensures the stability of the guide sleeve during the processing by setting a positioning ring and a fixture positioning surface, preventing displacement caused by external vibration or cutting force, thereby improving processing efficiency and the safety and reliability of the finished product.

[0022] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] Figure 1 This is a schematic cross-sectional view of the present invention.

[0025] Figure 2This is a schematic diagram of the structure of the guide sleeve of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the siphon tube of this utility model;

[0027] Figure 4 This is a schematic diagram of the positioning ring of this utility model.

[0028] Explanation of reference numerals in the attached drawings: 1. Guide sleeve; 11. End minimum hole; 12. Middle free hole; 13. Upper positioning hole; 2. Siphon tube; 3. Bolt; 4. Positioning ring; 41. Annular protrusion; 5. Fixture positioning surface; 6. Weld. Detailed Implementation

[0029] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0030] The following describes in detail, with reference to the accompanying drawings, a tooling for manufacturing a Yankee cylinder siphon tube according to an embodiment of the present invention.

[0031] Example 1

[0032] For easier understanding, please refer to Figures 1 to 4 An embodiment of a Yankee cylinder siphon manufacturing fixture provided by this utility model includes:

[0033] Guide sleeve 1, the guide sleeve 1 is provided with three stepped holes along the axial direction, which are respectively used to constrain the end, middle and bolt 3 of the siphon tube 2 and position the bolt 3;

[0034] Positioning ring 4, which is disposed on the top of the guide sleeve 1, is used to constrain the concentricity of the bolt 3 body and the guide sleeve 1;

[0035] The clamp positioning surface 5 is located on the outside of the guide sleeve 1.

[0036] It should be noted that three stepped holes of different diameters are provided along the axis of the guide sleeve 1, namely the smallest end hole 11, the middle free hole 12, and the upper positioning hole 13. This utility model, by setting up a three-step hole structure, rationally allocates the guiding and error tolerance areas, ensuring that the siphon tube 2 is both guided and has a certain margin of error during drilling, significantly improving the accuracy and consistency of the drilling position. Simultaneously, the synergistic effect of the positioning ring 4 and the fixture positioning surface 5 further enhances processing efficiency and finished product quality, demonstrating promising application prospects.

[0037] In some embodiments, the three stepped holes of the guide sleeve 1 include:

[0038] The end minimum hole 11 is used to constrain the position of the end of the siphon tube 2 and maintain a constant distance from the bottom of the trench; the end minimum hole 11 of the guide sleeve 1 matches the siphon tube 2.

[0039] The intermediate free hole 12 is used to allow deviations in the middle of the siphon tube 2 caused by misalignment of the bolt 3 or bending of the tube itself; the diameter of the intermediate free hole 12 is larger than the outer diameter of the siphon tube 2.

[0040] The upper positioning hole 13 is used to place the bolt 3 and cooperate with the positioning ring 4 to achieve the concentricity of its axis with the siphon tube 2.

[0041] It should be noted that the inner diameter of the minimum end hole 11 matches the outer diameter of the siphon tube 2 to be processed, which is used to constrain the position of the end of the siphon tube 2 and maintain a constant distance between it and the bottom of the trench, thereby ensuring the consistency of the drilling depth.

[0042] The diameter of the free hole 12 is slightly larger than the outer diameter of the siphon tube 2, and the length is adapted to the bending tolerance range that may exist in the middle of the siphon tube 2, allowing the siphon tube 2 to be slightly offset during the assembly process due to its own bending or the misalignment of the bolt 3.

[0043] The upper positioning hole 13 is used to place the bolt 3 and serves as a positioning reference in conjunction with the positioning ring 4 to ensure that the axis of the bolt 3 is concentric with the axis of the siphon tube 2.

[0044] In some embodiments, the inner ring of the positioning ring 4 is provided with an annular protrusion 41, which is matched and installed in the upper positioning hole 13.

[0045] It should be noted that the positioning ring 4 is located on the top of the guide sleeve 1, and its inner ring has an annular protrusion 41. This protrusion is inserted into the upper positioning hole 13 with an interference fit or clearance fit, and is used to support and position the hexagonal head end face of the bolt 3. This structure can effectively limit the tilt angle of the bolt 3, ensure the perpendicularity of its end face to the axis of the siphon tube 2, and improve drilling accuracy.

[0046] In some embodiments, the fixture positioning surface 5 is a plane, used to cooperate with fixtures such as bench vises to fix the guide sleeve 1.

[0047] It should be noted that a planar fixture positioning surface 5 is provided on the outer side of the guide sleeve 1. This plane matches the clamping surface of the bench vise or other clamping device, so that the guide sleeve 1 can be firmly fixed on the machine tool during the processing, preventing displacement caused by vibration or cutting force, thereby improving the overall processing stability and safety.

[0048] In some embodiments, a weld 6 is provided on the end face of the bolt 3. The weld 6 is welded to the end face of the bolt 3 to enhance the connection strength.

[0049] Working principle: In actual operation, the siphon tube 2 is passed sequentially through the three stepped holes of the guide sleeve 1, with its end limited by the smallest end hole 11 and its middle located within the middle free hole 12 to accommodate deviations. The bolt 3 is inserted into the upper positioning hole 13 and engages with the positioning ring 4 to ensure that its axis is concentric with the siphon tube 2. The entire guide sleeve assembly is then fixed to the bench vise using the fixture positioning surface 5, allowing for drilling operations. After drilling is completed, a weld 6 is welded to the end face of the bolt 3 to enhance the connection strength.

[0050] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A Yankee cylinder siphon making tool characterized by: include: Guide sleeve (1), the guide sleeve (1) is provided with three stepped holes along the axial direction, which are used to constrain the end, middle and bolt (3) of the siphon tube (2) respectively; Positioning ring (4), the positioning ring (4) is disposed on the top of the guide sleeve (1) and is used to constrain the concentricity of the bolt (3) body and the guide sleeve (1); The fixture positioning surface (5) is located on the outside of the guide sleeve (1).

2. A Yankee cylinder siphon making tooling according to claim 1, characterized in that: The guide sleeve (1) has three stepped holes, including: The end minimum hole (11) is used to constrain the position of the end of the siphon tube (2) and maintain its constant distance from the bottom of the trench; The central free hole (12) is used to allow deviations in the middle of the siphon tube (2) caused by misalignment of the bolt (3) or bending of the tube itself. The upper positioning hole (13) is used to place the bolt (3) and cooperate with the positioning ring (4) to achieve the concentricity of its axis with the siphon tube (2).

3. The apparatus according to claim 2, wherein: The smallest hole (11) at the end of the guide sleeve (1) matches the siphon tube (2).

4. The apparatus according to claim 2, wherein: The diameter of the intermediate free hole (12) is larger than the outer diameter of the siphon tube (2).

5. The apparatus according to claim 2, wherein: The inner ring of the positioning ring (4) is provided with an annular protrusion (41), which is matched and installed in the upper positioning hole (13).

6. The apparatus of claim 1, wherein: The fixture positioning surface (5) is a plane, used to cooperate with fixtures such as bench vises to fix the guide sleeve (1).

7. The apparatus of claim 1, wherein: The end face of the bolt (3) is provided with a weld (6).

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