Corrugated pipe steel belt forming device

Abstract

The utility model discloses a corrugated pipe steel belt forming device, and belongs to the technical field of corrugated pipe manufacturing. The corrugated pipe steel belt forming device comprises the conveying module, the positioning module, the decontamination module, the primary pre-bending module, the secondary pre-bending module and the edge rolling forming module, and accurate control over the whole process from feeding to forming of a steel belt is achieved through the series of elaborately-designed modules. Particularly, the decontamination module effectively removes impurities on the surface of the steel belt, and conditions are provided for high-quality welding; and through fine adjustment of the primary pre-bending module and the secondary pre-bending module, the forming precision and stability are guaranteed, and deviation and errors in the forming process are remarkably reduced. And finally, the edge rolling forming module ensures that edge rolling forming of the steel belt is completed in an ideal form, and the yield and the product quality are greatly improved. On the whole, through structure simplification and accurate control, the production cost is effectively reduced, the production efficiency is improved, and the device has important significance for improving the production technology of the thin-wall stainless steel corrugated pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of bellows manufacturing, and more specifically to a bellows steel strip forming device. Background Art

[0002] In current industrial production, stainless steel bellows are widely used in liquid and gas pipeline systems due to their excellent corrosion resistance, good bending and twisting performance, and strong resistance to high and low temperatures. These pipeline systems are commonly found in petrochemical, shipbuilding, automobile, heat exchanger and construction engineering. The manufacture of stainless steel bellows involves multiple processes, the most critical of which include the rolling and forming of the steel strip, welding and the formation of the corrugation.

[0003] However, in the production process of stainless steel corrugated pipes, due to the limitations of the width and thickness of the raw material, namely the stainless steel strip, and the high requirements for its surface quality, the manufacturing process faces multiple technical challenges. First, the stainless steel strip is prone to unstable curling during the forming process, resulting in defects such as perforation, wave forming distortion, and weld pits in the subsequent welding process; second, traditional cleaning methods such as using linen or rags for cleaning are difficult to completely remove dirt and impurities on the surface of the stainless steel strip. These residues will affect the welding quality and thus the performance of the final product.

[0004] In addition, most of the existing stainless steel corrugated tube forming devices on the market have problems such as complex design, cumbersome operation, poor forming stability, and difficulty in mold replacement, which not only reduces production efficiency but also increases production costs, especially in application scenarios with high quality requirements. Therefore, how to improve the forming stability of stainless steel strips, reduce defects in the forming process, and simplify the equipment structure and operating procedures have become technical problems that need to be solved urgently in this field. Utility Model Content

[0005] The utility model provides a corrugated pipe steel strip forming device for improving the stability and quality of steel strip rolling.

[0006] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0007] A corrugated pipe steel strip forming device comprises a conveying module, a positioning module, a decontamination module, a primary pre-bending module, a secondary pre-bending module and a rolling forming module which are sequentially arranged on a bottom plate;

[0008] The positioning module is configured to position the steel strip conveyed by the conveying module so that the steel strip enters the primary pre-bending module;

[0009] The decontamination module is arranged between the positioning module and the primary pre-bending module, and is used for performing surface decontamination on the steel strip before entering the primary pre-bending module;

[0010] The primary pre-bending module comprises a first upper forming wheel and a first lower forming tube wheel, and the steel strip after surface decontamination passes between the first upper forming wheel and the first lower forming tube wheel, so as to perform the first pre-bending forming on the steel strip;

[0011] The secondary pre-bending module comprises a second upper forming wheel and a second lower forming wheel, and the steel strip after the first pre-bending is passed between the second upper forming wheel and the second lower forming wheel, so as to perform a second pre-bending on the steel strip;

[0012] The rolling and forming module comprises a pre-forming sleeve, through which the steel strip after the second pre-bending passes, and is used to roll and form the steel strip.

[0013] Furthermore, the conveying module includes a support base fixedly mounted on the base plate and a roller rotatably connected to the top of the support base.

[0014] Furthermore, the positioning module includes two positioning blocks, and the steel belt passes between the two positioning blocks, which are used to position the steel belt during its conveying process.

[0015] Furthermore, a tungsten steel sheet is installed on the side wall of the positioning block close to the steel belt.

[0016] Furthermore, the decontamination module includes two pressing plates and two pieces of cleaning cotton installed between the two pressing plates, and the steel belt passes between the two pieces of cleaning cotton.

[0017] Further, the primary pre-bending module includes two first guide pillars fixed on the bottom plate;

[0018] The two first guide posts are each sleeved with a first guide sleeve, and the two first guide sleeves are fixedly connected with a first mounting plate, and the first mounting plate can move up and down as the first guide sleeve slides on the first guide post.

[0019] Furthermore, a first concave fixing block is fixedly installed on the bottom end of the first mounting plate, the first upper forming wheel is rotatably installed on the bottom of the first concave fixing block, a second concave fixing block is fixedly installed on the bottom plate, and the first lower forming pipe position wheel is rotatably installed on the top of the second concave fixing block.

[0020] Further, the secondary pre-bending module includes two second guide pillars fixed on the bottom plate;

[0021] The two second guide posts are each sleeved with a second guide sleeve, and the two second guide sleeves are fixedly connected with a second mounting plate, and the second mounting plate can move up and down as the second guide sleeve slides on the second guide post.

[0022] Furthermore, a third concave fixing block is fixedly installed on the bottom end of the second mounting plate, the second upper forming wheel is rotatably installed on the bottom of the third concave fixing block, a fourth concave fixing block is fixedly installed on the bottom plate, and the second lower forming pipe position wheel is rotatably installed on the top of the fourth concave fixing block.

[0023] Further, the curling forming module includes two third guide pillars fixed on the bottom plate;

[0024] The two third guide pillars are each sleeved with a third guide sleeve, and the two third guide sleeves are fixedly connected with a third mounting plate. The third mounting plate can move up and down as the third guide sleeve slides on the third guide pillars, and the pre-molded sleeve is installed at the bottom of the third mounting plate.

[0025] Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

[0026] 1. Improve the forming stability and quality: Through the sequential arrangement of the conveying module, positioning module, decontamination module, primary pre-bending module, secondary pre-bending module and rolling forming module, this device effectively improves the forming stability and forming quality of the steel strip;

[0027] 2. Reduce welding defects: The setting of the decontamination module ensures the cleanliness of the steel strip surface, provides a good foundation for high-quality welding, and effectively reduces welding defects caused by surface dirt, such as perforation and cold welding;

[0028] 3. Improve the molding quality: The design of the positioning module, especially the positioning block that can be adjusted left and right, enables the steel strip to be accurately positioned before molding, ensuring the symmetry and smoothness of the steel strip during the molding process, thereby significantly improving the quality of the molded product;

[0029] 4. Effective cleaning: The pressing plate and cleaning cotton design adopted by the decontamination module can more effectively remove dirt and impurities on the surface of the steel strip compared with traditional cleaning methods, ensuring the quality of forming and welding in subsequent processes;

[0030] 5. Precise forming control: The design of the primary and secondary pre-bending modules, including the application of adjustment handles, guide pins and guide sleeves, effectively controls the upper and lower center and left and right symmetric alignment of the steel strip during the forming process; this precise adjustment mechanism ensures the stability and forming quality of the forming process; the application of the forming pre-set sleeve further improves the stability and quality of the steel strip rolling forming;

[0031] To sum up, the corrugated pipe steel strip forming device provided by the utility model not only simplifies the operation process, improves production efficiency and forming quality, but also reduces the defective rate, which is of great significance for improving the overall technical level of the thin-walled stainless steel corrugated pipe production industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a three-dimensional structural schematic diagram of the corrugated pipe steel strip forming device of the utility model;

[0034] Figure 2 This is a front view of the corrugated pipe steel strip forming device of the utility model;

[0035] Figure 3 It is a three-dimensional diagram of the corrugated pipe steel strip forming device of the utility model;

[0036] Description of the markings in the figure:

[0037] 1. Conveying module; 101. Support seat; 102. Roller;

[0038] 2. Positioning module; 201. Positioning block; 202. Tungsten steel sheet;

[0039] 3. Decontamination module; 301. Cleaning cotton;

[0040] 4. primary pre-bending module; 401. first guide column; 402. first guide sleeve; 403. first upper forming wheel; 404. first lower forming tube position wheel; 405. first adjusting handle; 406. first mounting plate;

[0041] 5. Secondary pre-bending module; 501. Second guide column; 502. Second guide sleeve; 503. Second upper forming wheel; 504. Second lower forming tube position wheel; 505. Second adjustment handle; 506. Second mounting plate;

[0042] 6. Rolling forming module; 601. Third guide column; 602. Third guide sleeve; 603. Pre-molding sleeve; 604. Third mounting plate; 605. Third adjustment handle;

[0043] 7. Base plate. DETAILED DESCRIPTION

[0044] In order to better understand the purpose, structure and function of the utility model, the technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0045] In the description of the present utility model, it should be understood that the terms "left side", "right side", "upper part", "lower part", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present utility model. The specific dimensions used in the embodiments are only for illustrating the technical solution, and do not limit the scope of protection of the present utility model. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0046] Unless otherwise clearly specified and limited, the terms "install", "set", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] Embodiment 1:

[0048] like Figure 1-3 As shown, the utility model provides a technical solution:

[0049] A corrugated steel strip forming device comprises a conveying module 1, a positioning module 2, a decontamination module 3, a primary pre-bending module 4, a secondary pre-bending module 5 and a rolling forming module 6 which are sequentially arranged on a bottom plate 7;

[0050] The positioning module 2 is configured to position the steel strip conveyed by the conveying module 1 so that the steel strip enters the primary pre-bending module 4;

[0051] The decontamination module 3 is disposed between the positioning module 2 and the primary pre-bending module 4, and is used to perform surface decontamination on the steel strip before entering the primary pre-bending module 4;

[0052] The primary pre-bending module 4 comprises a first upper forming wheel 403 and a first lower forming tube wheel 404, and the steel strip after surface decontamination passes between the first upper forming wheel 403 and the first lower forming tube wheel 404, for performing the first pre-bending forming on the steel strip;

[0053] The upper and lower forming wheels and the pipe positioning wheels are equipped with ball bearings and adjustment and positioning rings at both ends. After the steel belt is aligned to the center, the rings are fixed to make the upper and lower forming wheels and the pipe positioning wheels roll more smoothly without jamming, so that the steel belt can be pre-bent and formed stably;

[0054] The secondary pre-bending module 5 comprises a second upper forming wheel 503 and a second lower forming tube wheel 504, and the steel strip after the first pre-bending passes between the second upper forming wheel 503 and the second lower forming tube wheel 504, so as to perform a second pre-bending on the steel strip;

[0055] The upper forming wheel and the lower forming wheel of the secondary pre-bending module 5 have a larger pre-bending range than the upper and lower forming wheels of the primary pre-bending module;

[0056] The rolling forming module 6 includes a pre-forming sleeve 603 , through which the steel strip after the second pre-bending passes, for rolling the steel strip.

[0057] In the prior art, stainless steel corrugated pipe machines use linen and rags to clean stainless steel impurities. If the cleaning is not thorough, the pipe will easily shed over time, which will affect the forming and welding. In addition, the pre-set plates used in the market are unstable, the curling is unnatural, and the steel belt is prone to wrinkles, which affects the roundness of the forming and causes the round tube to appear elliptical.

[0058] In view of the problems of the prior art, this embodiment provides a corrugated pipe steel strip forming device, the main structure of which includes a steel strip conveying and positioning module, a steel strip surface decontamination module, upper and lower steel strip forming wheels, a pipe position forming wheel, upper and lower guide mechanisms and a forming pre-setting guide module. The steel strip raw material passes through the conveying module 1, the positioning module 2, and the cleaning and clamping system, and the upper and lower forming wheels are adjusted by adjusting the guide mechanism to the steel strip raw material to the primary roll shape, the secondary roll shape, and the ideal roll shape; finally, it enters the forming pre-setting sleeve to achieve a satisfactory stainless steel corrugated pipe round tube raw material.

[0059] Compared with the existing technology, the utility model adopts a complete set of forming jigs and high-efficiency pressure cleaning cotton to clean the steel belt debris and steel belt pipe position; effectively avoiding the problem of welding perforation caused by steel belt debris and dirt. The steel belt is pre-bent and rolled twice to achieve a better steel belt forming effect, stabilize the welding leak, false welding, and edge collapse, and greatly improve the subsequent scrap rate of corrugated pipe wave.

[0060] In summary, the corrugated pipe steel strip forming device has a simple structure and good safety, which can improve production efficiency and reduce scrap rate; it is easy to operate and has stable forming, the steel strip forming curvature can be adjusted at any time, the mold change is convenient, and it is compatible with various specifications of stainless steel corrugated pipes on the market; it improves production efficiency and reduces the defective rate of false welding and perforation, and reduces the manpower and material costs of the enterprise.

[0061] Embodiment 2:

[0062] Based on Example 1, Figure 1-3 The conveying module 1 includes a support base 101 fixedly mounted on the base plate 7 and a roller 102 rotatably connected to the top of the support base 101 .

[0063] Furthermore, the corrugated pipe steel strip forming device can be debugged according to the actual production needs and the corresponding width of the stainless steel raw material; the device has high-precision positioning and pipe position configuration, precise guide columns and linear guide sleeve bearings, which can prevent the steel strip from shifting and offsetting during the rolling forming process, effectively improving the stability and rolling quality of the stainless steel strip rolling, and greatly reducing manpower and equipment debugging and welding scrap rate.

[0064] Embodiment 3:

[0065] Based on Example 1, Figure 1-3 The positioning module 2 includes two positioning blocks 201, and the steel belt passes between the two positioning blocks 201. The two positioning blocks 201 can be adjusted left and right to position the steel belt during the steel belt conveying process so that the steel belt is symmetrically located on both sides of the center of the positioning fixture to improve the quality of the steel belt rolling.

[0066] Furthermore, a wear-resistant tungsten steel sheet 202 is embedded and installed on the side wall of the positioning block 201 close to the steel belt.

[0067] Embodiment 4:

[0068] Based on Example 1, Figure 1-3 The decontamination module 3 includes two pressing plates, two cleaning cottons 301 installed between the two pressing plates, and two hexagon socket screws, and the steel belt passes between the two cleaning cottons 301.

[0069] Embodiment 5:

[0070] Based on Example 1, Figure 1-3 The primary pre-bending module 4 includes a first guide column 401, a first guide sleeve 402, a first upper forming wheel 403, a first lower forming tube position wheel 404, a first adjustment handle 405, and a first mounting plate 406;

[0071] Specifically, the primary pre-bending module 4 includes two first guide columns 401 fixed on the base plate 7; the two first guide columns 401 are both sleeved with a first guide sleeve 402, and the guide sleeves on both sides of the guide columns play a role in adjusting the sliding and parallel limiting. The first adjusting handle 405 rotates the adjusting screw to adjust the upper and lower centers to achieve the upper and lower centers and left-right symmetrical alignment effects, so that the steel belt does not deviate or wrinkle; the two first guide sleeves 402 are fixedly connected with a first mounting plate 406, and the first mounting plate 406 can move up and down as the first guide sleeve 402 slides on the first guide column 401.

[0072] Furthermore, a first concave fixing block is fixedly installed at the bottom end of the first mounting plate 406, the first upper forming wheel 403 is rotatably installed at the bottom of the first concave fixing block, a second concave fixing block is fixedly installed on the bottom plate 7, and the first lower forming pipe position wheel 404 is rotatably installed on the top of the second concave fixing block.

[0073] Embodiment 6:

[0074] Based on Example 1, Figure 1-3 The secondary pre-bending module 5 includes a second guide column 501, a second guide sleeve 502, a second upper forming wheel 503, a second lower forming tube position wheel 504, a second adjustment handle 505, and a second mounting plate 506;

[0075] The secondary pre-bending module 5 includes two second guide pillars 501 fixed on the bottom plate 7;

[0076] The two second guide pillars 501 are each sleeved with a second guide sleeve 502 , and the two second guide sleeves 502 are fixedly connected with a second mounting plate 506 . The second mounting plate 506 can move up and down as the second guide sleeve 502 slides on the second guide pillar 501 .

[0077] Furthermore, a third concave fixing block is fixedly installed on the bottom end of the second mounting plate 506, the second upper forming wheel 503 is rotatably installed on the bottom of the third concave fixing block, a fourth concave fixing block is fixedly installed on the bottom plate 7, and the second lower forming tube position wheel 504 is rotatably installed on the top of the fourth concave fixing block.

[0078] Embodiment 7:

[0079] Based on Example 1, Figure 1-3 The rolling forming module 6 includes a third guide column 601, a third guide sleeve 602, a pre-forming sleeve 603, a third mounting plate 604, and a third adjusting handle 605;

[0080] The curling module 6 includes two third guide posts 601 fixed on the bottom plate 7;

[0081] The two third guide columns 601 are each sleeved with a third guide sleeve 602, and the two third guide sleeves 602 are fixedly connected with a third mounting plate 604. The third mounting plate 604 can move up and down as the third guide sleeve 602 slides on the third guide column 601, and the pre-molding sleeve 603 is installed at the bottom of the third mounting plate 604.

[0082] In summary, there are five steps in the pre-bending of steel strips, including: limiting, cleaning, primary pre-bending, secondary pre-bending, and steel strip forming. The device is simple and convenient. After debugging, it is stable and efficient. It can improve the welding stability of thin-walled stainless steel corrugated pipes and reduce the obvious height difference, wrinkles, and weld offset after the steel strip is rolled.

[0083] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A corrugated pipe steel strip forming device, characterized in that: It comprises a conveying module (1), a positioning module (2), a decontamination module (3), a primary pre-bending module (4), a secondary pre-bending module (5) and a rolling forming module (6) which are sequentially arranged on a bottom plate (7); The positioning module (2) is configured to position the steel strip conveyed by the conveying module (1) so that the steel strip enters the primary pre-bending module (4); The decontamination module (3) is arranged between the positioning module (2) and the primary pre-bending module (4), and is used to perform surface decontamination on the steel strip before it enters the primary pre-bending module (4); The primary pre-bending module (4) comprises a first upper forming wheel (403) and a first lower forming tube wheel (404), wherein the steel strip after surface decontamination passes between the first upper forming wheel (403) and the first lower forming tube wheel (404) to perform a primary pre-bending forming on the steel strip; The secondary pre-bending module (5) comprises a second upper forming wheel (503) and a second lower forming tube wheel (504), and the steel strip after the first pre-bending is passed between the second upper forming wheel (503) and the second lower forming tube wheel (504), so as to perform a second pre-bending on the steel strip; The rolling and forming module (6) comprises a pre-forming sleeve (603), through which the steel strip after the second pre-bending passes, and is used to roll and form the steel strip.

2. The corrugated pipe steel strip forming device according to claim 1, characterized in that: The conveying module (1) comprises a support seat (101) fixedly mounted on the base plate (7) and a roller (102) rotatably connected to the top of the support seat (101).

3. The corrugated pipe steel strip forming device according to claim 1, characterized in that: The positioning module (2) comprises two positioning blocks (201), and the steel belt passes between the two positioning blocks (201), so as to position the steel belt during its conveyance.

4. The corrugated pipe steel strip forming device according to claim 3, characterized in that: A tungsten steel sheet (202) is installed on the side wall of the positioning block (201) close to the steel belt.

5. The corrugated pipe steel strip forming device according to claim 1, characterized in that: The decontamination module (3) comprises two pressing plates and two pieces of cleaning cotton (301) installed between the two pressing plates, and the steel belt passes between the two pieces of cleaning cotton (301).

6. The corrugated pipe steel strip forming device according to claim 1, characterized in that: The primary pre-bending module (4) comprises two first guide pillars (401) fixed on the bottom plate (7); The two first guide columns (401) are each sleeved with a first guide sleeve (402), and the two first guide sleeves (402) are fixedly connected with a first mounting plate (406), and the first mounting plate (406) can move up and down as the first guide sleeve (402) slides on the first guide column (401).

7. The corrugated pipe steel strip forming device according to claim 6, characterized in that: A first concave fixing block is fixedly mounted on the bottom end of the first mounting plate (406), the first upper forming wheel (403) is rotatably mounted on the bottom of the first concave fixing block, a second concave fixing block is fixedly mounted on the bottom plate (7), and the first lower forming tube position wheel (404) is rotatably mounted on the top of the second concave fixing block.

8. The corrugated pipe steel strip forming device according to claim 1, characterized in that: The secondary pre-bending module (5) comprises two second guide pillars (501) fixed on the bottom plate (7); The two second guide pillars (501) are each sleeved with a second guide sleeve (502), and the two second guide sleeves (502) are fixedly connected with a second mounting plate (506), and the second mounting plate (506) can move up and down as the second guide sleeve (502) slides on the second guide pillar (501).

9. The corrugated pipe steel strip forming device according to claim 8, characterized in that: A third concave fixing block is fixedly mounted on the bottom end of the second mounting plate (506), the second upper forming wheel (503) is rotatably mounted on the bottom of the third concave fixing block, a fourth concave fixing block is fixedly mounted on the bottom plate (7), and the second lower forming tube position wheel (504) is rotatably mounted on the top of the fourth concave fixing block.

10. The corrugated pipe steel strip forming device according to claim 1, characterized in that: The curling forming module (6) comprises two third guide pillars (601) fixed on the bottom plate (7); The two third guide pillars (601) are each sleeved with a third guide sleeve (602), and the two third guide sleeves (602) are fixedly connected with a third mounting plate (604). The third mounting plate (604) can move up and down as the third guide sleeve (602) slides on the third guide pillars (601), and the pre-molding sleeve (603) is mounted at the bottom of the third mounting plate (604).

Images