A supporting and positioning module for metal pipe roll forming

Abstract

The application discloses a supporting and positioning module for metal round pipe roll forming, which comprises a shell, a supporting and positioning mechanism and a rolling mechanism are installed on the shell; the supporting and positioning mechanism comprises a motor, two supporting racks and a gear; the rolling mechanism comprises a sliding rod fixing block, a sliding rod, an adjusting sliding block, a roller, a sliding block connecting rod and a connecting rod fixing block; the shell comprises a cylindrical box body, a circular supporting disc and a circular bottom cover; the supporting and positioning module has the characteristics of high roll forming corrugated pipe height, narrow corrugated pipe width, high modular degree, strong universality and stable and reliable structure.

Description

Technical Field

[0001] This invention relates to a support and positioning module for rolling and bulging metal round tubes. Background Technology

[0002] Metal bellows is a type of tubular part with a regular wavy shape and transverse corrugations. It has high bending fatigue strength and elastic stability, and can produce axial, lateral, and angular displacements under external forces. It is often used as an elastic element in the manufacture of compensators, flexible connectors, heat exchangers, etc., and is widely used in aerospace, power instrumentation, petrochemical, automotive, shipbuilding and other fields.

[0003] The forming processes for corrugated pipes include mechanical forming, hydroforming, and welding forming. Hydroforming is relatively complex and has certain limitations on the corrugated shape, making it difficult to form corrugated pipes with high corrugation height and narrow corrugation width. Mechanical forming typically uses multiple die segments to radially expand and bulge the pipe, making it difficult to control the forming quality, and the die segments are all specifically designed, limiting their versatility. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a support and positioning module for rolling and expanding metal round tubes, which can roll out corrugated tubes with high corrugation height and narrow corrugation width, and is highly modular, versatile, and structurally stable and reliable.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A support and positioning module for rolling and expanding metal tubes includes a housing, on which a support and positioning mechanism and a rolling mechanism are mounted; the support and positioning mechanism includes a motor, two support racks and gears; the rolling mechanism includes a slide bar fixing block, a slide bar, an adjusting slider, a roller, a slider connecting rod and a connecting rod fixing block; the housing includes a cylindrical box, a circular support plate and a circular bottom cover;

[0007] A motor is mounted on one side of the circular support plate; a gear is mounted on the other side of the circular support plate, and the gear is connected to the output end of the motor; the circular support plate with the gear is connected to the circular bottom cover of the housing; two support racks are installed between the circular support plate and the circular bottom cover; the two support racks are meshed with the gear.

[0008] A sliding rod fixing block and a connecting rod fixing block are fixedly installed on the outer wall of the cylindrical box; the sliding rod fixing block is connected to one end of the sliding rod; a roller is installed on each side of the other end of the sliding rod; an adjusting slider is also movably installed on the sliding rod; the adjusting slider is connected to one end of the slider connecting rod, and the other end of the slider connecting rod is connected to the connecting rod fixing block.

[0009] The support rack is equipped with straight teeth, and a rectangular slider is mounted on the back of the straight teeth. One of the support racks has a semi-circular limiting block mounted on its top, and the other has a semi-circular limiting block mounted on its bottom. These limiting blocks restrict the range of motion of the support rack. A semi-circular support block is mounted on each limiting block, and rubber dots are mounted at both ends of the semi-circular support block to increase friction when in contact with the pipe, thus improving positioning. The straight teeth and gears are meshed together.

[0010] The circular bottom cover is equipped with two L-shaped sliding grooves. Two clearance grooves are formed on the circular edge of the bottom cover to expose the support rack. These clearance grooves accommodate the support rack. A support plate mounting platform is integrally formed on the circular edge of the bottom cover, and the support plate mounting platform has support plate fixing holes. The rectangular slider on the support rack and the L-shaped sliding grooves on the circular bottom cover are fitted together, allowing the straight teeth to slide and extend / retract on the circular bottom cover.

[0011] The circular support plate has a motor output mounting hole at its center and a motor fixing hole. A bottom cover mounting platform is integrally formed on the circumference of the circular support plate, and a bottom cover mounting hole is formed on the bottom cover mounting platform. A circular shoulder that engages with the circular edge of the circular bottom cover is also installed on the circular support plate.

[0012] A slide rod mounting platform is integrally formed on the slide rod fixing block; a first fixing hole is provided on the slide rod fixing block, and a first mounting through hole is provided on the slide rod mounting platform; a second mounting through hole is provided at both ends of the slide rod; the first mounting through hole on the slide rod mounting platform and the second mounting through hole at one end of the slide rod are connected by a pin; the second mounting through hole at the other end of the slide rod is connected to two rollers respectively through roller shafts;

[0013] An integrally formed slider connecting rod mounting platform is installed on the adjusting slider; a slider mounting square hole is opened on the side of the adjusting slider, and a positioning hole is opened on the front of the adjusting slider, and the positioning hole and the slider mounting square hole are connected; a third mounting through hole is opened on the slider connecting rod mounting platform;

[0014] A connecting rod mounting platform is integrally formed on the connecting rod fixing block; a second fixing hole is provided on the connecting rod fixing block, and a fourth mounting through hole is provided on the connecting rod mounting platform; a fifth mounting through hole is provided at both ends of the slider connecting rod; the third mounting through hole of the adjusting slider is connected to the fifth mounting through hole at one end of the slider connecting rod by a pin; the fourth mounting through hole on the connecting rod mounting platform is connected to the fifth mounting through hole at the other end of the slider connecting rod by a pin.

[0015] The cylindrical housing is equipped with a slide rod fixing block mounting platform and a connecting rod fixing block mounting platform; the slide rod fixing block mounting platform has a third fixing mounting hole, and the connecting rod fixing block mounting platform has a fourth fixing mounting hole; the first fixing mounting hole on the slide rod fixing block and the third fixing mounting hole on the slide rod fixing block mounting platform are fixedly connected by screws; the second fixing mounting hole on the connecting rod fixing block and the fourth fixing mounting hole on the connecting rod fixing block mounting platform are fixedly connected by screws.

[0016] A circular bottom cover mounting platform is installed on the cylindrical box body. The circular bottom cover mounting platform has a bottom cover connection hole. The cylindrical box body is fixedly connected to the bottom cover mounting hole on the bottom cover mounting platform of the circular support plate and the support plate fixing hole on the support plate mounting platform of the circular bottom cover through the bottom cover connection hole and by nuts and bolts.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The power of this invention is input by a motor, which drives the movement of the supporting rack through gear and rack transmission, thereby realizing the opening, positioning, or retraction and reset, and the structure is stable and reliable.

[0019] 2. The support rack and gear work together, and also cooperate with the L-shaped groove on the circular bottom cover to realize the sliding and position adjustment of the support rack, making the structure reliable.

[0020] 3. Rubber dots are provided on the support block of the rack to increase friction when in contact with the pipe, thus improving positioning.

[0021] 4. The unfolding angle of the crawling mechanism can be adjusted by adjusting the position of the adjusting slider on the slide rod, ensuring a reliable structure.

[0022] In summary, this embodiment can roll out corrugated pipes with high corrugation height and narrow corrugation width, and has a high degree of modularity, strong versatility, and stable and reliable mechanism. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 yes Figure 1 Enlarged structural diagram of the central support positioning mechanism;

[0025] Figure 3 yes Figure 1 Enlarged schematic diagram of the rolling mechanism;

[0026] Figure 4 yes Figure 3 Enlarged structural diagram of the middle slide bar;

[0027] Figure 5 yes Figure 3Enlarged structural diagram of the adjusting slider

[0028] Figure 6 yes Figure 3 Enlarged structural diagram of the middle connecting rod fixing block;

[0029] Figure 7 yes Figure 1 Enlarged structural diagram of the medium-circular bottom cover;

[0030] Figure 8 yes Figure 1 Enlarged structural diagram of the medium-circular support disk;

[0031] Figure 9 yes Figure 1 Enlarged structural diagram of the medium cylindrical box. Detailed Implementation

[0032] This embodiment provides a support and positioning module for rolling and bulging metal round tubes, such as... Figure 1-9 As shown, the device includes a housing 3, on which a support and positioning mechanism 1 and a rolling mechanism 2 are mounted; the support and positioning mechanism 1 includes a motor 11, two support racks 12 and a gear 13; the rolling mechanism 2 includes a slide bar fixing block 21, a slide bar 22, an adjusting slider 23, a roller 24, a slider connecting rod 25 and a connecting rod fixing block 26; the housing 3 includes a cylindrical box body 31, a circular support plate 32 and a circular bottom cover 33;

[0033] A motor 11 is mounted on one side of the circular support disk 32; a gear 13 is mounted on the other side of the circular support disk 32, and the gear 13 is connected to the output end of the motor 11; the circular support disk 32 with the gear 13 mounted on it is connected to the circular bottom cover 33 of the housing 3; two support racks 12 are installed between the circular support disk 32 and the circular bottom cover 33; the two support racks 12 and the gear 13 are meshed together.

[0034] A slide rod fixing block 21 and a connecting rod fixing block 26 are fixedly installed on the outer wall of the cylindrical box 31; the slide rod fixing block 21 is connected to one end of the slide rod 22; a roller 24 is installed on each side of the other end of the slide rod 22; an adjusting slider 23 is also movably installed on the slide rod 22; the adjusting slider 23 is connected to one end of the slider connecting rod 25, and the other end of the slider connecting rod 25 is connected to the connecting rod fixing block 26.

[0035] The support rack 12 is equipped with straight teeth 121, and a rectangular slider 122 is installed on the back of the straight teeth 121. A semi-circular limiting block 123 is installed on the top of one support rack 12 and on the bottom of the other support rack 12. The limiting blocks 123 are used to restrict the range of motion of the support rack 12. A semi-circular support block 124 is installed on the limiting block 123, and rubber dots 125 are installed at both ends of the semi-circular support block 124. The rubber dots 125 are used to increase friction when in contact with the pipe, thus improving positioning. The straight teeth 121 and gear 13 are meshed together.

[0036] The circular bottom cover 33 is equipped with two L-shaped sliding grooves 331. Two clearance grooves 333 are formed on the circular edge 332 of the circular bottom cover 33, exposing the support rack 12. These clearance grooves 333 allow the support rack 12 to pass through. A support plate mounting platform 334 is integrally formed on the circular edge 332 of the circular bottom cover 33, and the support plate mounting platform 334 has support plate fixing holes 335. The rectangular slider 122 on the support rack 12 and the L-shaped sliding grooves 331 on the circular bottom cover 33 are fitted together, allowing the straight teeth 31 to slide and extend / retract on the circular bottom cover 33.

[0037] The circular support plate 32 has a motor output end mounting through hole 321 at its center, and a motor fixing hole 322 is also provided on the circular support plate 32; a bottom cover mounting platform 323 is integrally formed and installed on the circumference of the circular support plate 32, and a bottom cover mounting hole 324 is provided on the bottom cover mounting platform 323; a circular shoulder 325 is also installed on the circular support plate 32 to engage with the circular edge 332 of the circular bottom cover 33.

[0038] A slide rod mounting platform 212 is integrally formed and installed on the slide rod fixing block 21; a first fixing mounting hole 211 is opened on the slide rod fixing block 21, and a first mounting through hole 213 is opened on the slide rod mounting platform 212; a second mounting through hole 221 is opened at both ends of the slide rod 22; the first mounting through hole 213 on the slide rod mounting platform 212 is connected to the second mounting through hole 221 at one end of the slide rod 22 by a pin; the second mounting through hole 221 at the other end of the slide rod 22 is connected to two rollers 24 by roller shafts.

[0039] The adjusting slider 23 is integrally formed with a slider connecting rod mounting platform 232; the adjusting slider 23 has a slider mounting square hole 231 on its side and a positioning hole 234 on its front, and the positioning hole 234 and the slider mounting square hole 231 are connected; the slider connecting rod mounting platform 232 has a third mounting through hole 233.

[0040] A connecting rod mounting platform 262 is integrally formed and installed on the connecting rod fixing block 26; a second fixing mounting hole 261 is opened on the connecting rod fixing block 26, and a fourth mounting through hole 263 is opened on the connecting rod mounting platform 262; a fifth mounting through hole 251 is opened at both ends of the slider connecting rod 25; the third mounting through hole 233 of the adjusting slider 23 is connected to the fifth mounting through hole 251 at one end of the slider connecting rod 25 by a pin; the fourth mounting through hole 263 on the connecting rod mounting platform 262 is connected to the fifth mounting through hole 251 at the other end of the slider connecting rod 25 by a pin;

[0041] The cylindrical housing 31 is equipped with a slide rod fixing block mounting platform 311 and a connecting rod fixing block mounting platform 313; the slide rod fixing block mounting platform 311 has a third fixing mounting hole 312, and the connecting rod fixing block mounting platform 313 has a fourth fixing mounting hole 314; the first fixing mounting hole 211 on the slide rod fixing block 21 and the third fixing mounting hole 312 on the slide rod fixing block mounting platform 311 are fixedly connected by screws; the second fixing mounting hole 261 on the connecting rod fixing block 26 and the fourth fixing mounting hole 314 on the connecting rod fixing block mounting platform 313 are fixedly connected by screws.

[0042] A circular bottom cover mounting platform 315 is installed on the cylindrical box body 31. The circular bottom cover mounting platform 315 has a bottom cover connecting hole 316. The cylindrical box body 31 is fixedly connected to the bottom cover mounting hole 324 on the bottom cover mounting platform 323 of the circular support plate 32 and the support plate fixing hole 335 on the support plate mounting platform 334 of the circular bottom cover 33 through the bottom cover connecting hole 316 and nuts and bolts.

[0043] During installation, first, fix the motor 11 to one side of the circular support plate 32 using screws through the motor fixing holes 322 on the circular support plate 32; on the other side of the circular support plate 32, connect the output end of the motor 11 to the gear 13. Install the rectangular sliders 122 on the two support racks 12 onto the two L-shaped grooves 331 on the circular bottom cover 33, and mesh the two support racks 12 with the gears 13 respectively.

[0044] Then, the two rollers 24 are respectively installed on the roller shafts in one of the second mounting through holes 221 on the slide rod 22. Then, the adjusting slider 23 is fitted onto the slide rod 22, and the slider connecting rod 25 is connected to the adjusting slider 23 by a pin. The other end of the slider connecting rod 25 is connected to the connecting rod fixing block 26. Then, the slide rod 22 and the slide rod fixing block 21 are connected by a pin.

[0045] Then, the slide rod fixing block 21 and the connecting rod fixing block 26 are fixedly installed on the cylindrical box 31, and the cylindrical box 31, the circular support plate 32 and the circular bottom cover 33 are fixedly connected through the circular bottom cover mounting platform 315, the bottom cover mounting table 323 and the support plate mounting table 334.

[0046] Finally, adjust the position of the adjusting slider 23 on the slider 22 so that the opening angle of the rolling mechanism 2 is just right for the inner diameter of the tube to be rolled and expanded, and screw the set screw 27 into the positioning hole 234 for positioning.

[0047] During operation, the support positioning module first moves to the designated position inside the pipe through the rolling mechanism 2. Then, the motor 11 outputs power, which is transmitted through the gear 13 and the support rack 12, causing the support rack 12 to slide on the L-shaped groove 331 of the circular bottom cover 33. The support rack 12 extends out through the relief groove 333 and is supported inside the pipe. At the same time, the rubber dots 125 on the support rack 12 increase the friction between the support rack 12 and the pipe, resulting in better positioning.

[0048] This embodiment presents a support and positioning module for rolling and expanding metal round tubes. Power is input from a motor, which drives the movement of the support rack via a gear and rack transmission, achieving expansion and positioning, or contraction and resetting. The structure is stable and reliable. The support rack and gears cooperate, and simultaneously engage with the L-shaped sliding groove on the circular bottom cover, enabling the sliding and position adjustment of the support rack, ensuring structural reliability. Furthermore, rubber dots are provided on the support block of the support rack to increase friction with the tube, resulting in better positioning. Additionally, the unfolding angle of the crawling mechanism can be adjusted by adjusting the position of the adjusting slider on the slide rod, further enhancing structural reliability. In summary, this embodiment can roll corrugated tubes with high corrugation height and narrow corrugation width, and it features high modularity, strong versatility, and a stable and reliable mechanism.

Claims

1. A support and positioning module for rolling and bulging metal round tubes, characterized in that, The system includes a housing (3), on which a support positioning mechanism (1) and a rolling mechanism (2) are mounted; the support positioning mechanism (1) includes a motor (11), two support racks (12) and a gear (13); the rolling mechanism (2) includes a slide rod fixing block (21), a slide rod (22), an adjusting slider (23), a roller (24), a slider connecting rod (25) and a connecting rod fixing block (26); the housing (3) includes a cylindrical box body (31), a circular support plate (32) and a circular bottom cover (33); A motor (11) is installed on one side of the circular support disk (32); a gear (13) is installed on the other side of the circular support disk (32), and the gear (13) is connected to the output end of the motor (11); the circular support disk (32) on the side where the gear (13) is installed is connected to the circular bottom cover (33) of the housing (3); two support racks (12) are installed between the circular support disk (32) and the circular bottom cover (33); the two support racks (12) and the gear (13) are meshed together. The outer wall of the cylindrical box (31) is fixedly installed with a slide rod fixing block (21) and a connecting rod fixing block (26); the slide rod fixing block (21) is connected to one end of the slide rod (22); a roller (24) is installed on each side of the other end of the slide rod (22); an adjusting slider (23) is also movably installed on the slide rod (22); the adjusting slider (23) is connected to one end of the slider connecting rod (25), and the other end of the slider connecting rod (25) is connected to the connecting rod fixing block (26); The support rack (12) is equipped with straight teeth (121), and a rectangular slider (122) is installed on the back of the straight teeth (121) on the support rack (12); a semi-circular limiting block (123) is installed on the top of one of the support racks (12), and a semi-circular limiting block (123) is installed on the bottom of the other support rack (12); a semi-circular support block (124) is installed on the limiting block (123), and rubber dots (125) are installed at both ends of the semi-circular support block (124); the straight teeth (121) and the gear (13) are meshed and connected. The circular bottom cover (33) is equipped with two L-shaped sliding grooves (331). Two clearance grooves (333) are provided on the circular edge (332) of the circumference of the circular bottom cover (33) to expose the support rack (12). A support plate mounting platform (334) is integrally formed on the circular edge (332) of the circumference of the circular bottom cover (33). The support plate mounting platform (334) is provided with a support plate fixing hole (335). The rectangular slider (122) on the support rack (12) and the L-shaped sliding groove (331) on the circular bottom cover (33) are fitted together. The circular support plate (32) has a motor output end mounting through hole (321) at its center and a motor fixing hole (322) on its surface. A bottom cover mounting platform (323) is integrally formed on the circumference of the circular support plate (32) and a bottom cover mounting hole (324) is formed on the bottom cover mounting platform (323). A circular shoulder (325) is also installed on the circular support plate (32) to engage with the circular edge (332) of the circular bottom cover (33). A slide rod mounting platform (212) is integrally formed and installed on the slide rod fixing block (21); a first fixing mounting hole (211) is opened on the slide rod fixing block (21), and a first mounting through hole (213) is opened on the slide rod mounting platform (212); a second mounting through hole (221) is opened at both ends of the slide rod (22); the first mounting through hole (213) on the slide rod mounting platform (212) is connected to the second mounting through hole (221) at one end of the slide rod (22) by a pin; the second mounting through hole (221) at the other end of the slide rod (22) is connected to two rollers (24) by roller shafts respectively; The adjusting slider (23) is integrally formed with a slider connecting rod mounting platform (232); the adjusting slider (23) has a slider mounting square hole (231) on its side and a positioning hole (234) on its front, and the positioning hole (234) and the slider mounting square hole (231) are connected; the slider connecting rod mounting platform (232) has a third mounting through hole (233); A connecting rod mounting platform (262) is integrally formed and installed on the connecting rod fixing block (26); a second fixing mounting hole (261) is opened on the connecting rod fixing block (26), and a fourth mounting through hole (263) is opened on the connecting rod mounting platform (262); a fifth mounting through hole (251) is opened at both ends of the slider connecting rod (25); the third mounting through hole (233) of the adjusting slider (23) is connected to the fifth mounting through hole (251) at one end of the slider connecting rod (25) by a pin; the fourth mounting through hole (263) on the connecting rod mounting platform (262) is connected to the fifth mounting through hole (251) at the other end of the slider connecting rod (25) by a pin; The cylindrical box (31) is equipped with a slide rod fixing block mounting platform (311) and a connecting rod fixing block mounting platform (313); the slide rod fixing block mounting platform (311) has a third fixing mounting hole (312), and the connecting rod fixing block mounting platform (313) has a fourth fixing mounting hole (314); the first fixing mounting hole (211) on the slide rod fixing block (21) and the third fixing mounting hole (312) on the slide rod fixing block mounting platform (311) are fixedly connected by screws; the second fixing mounting hole (261) on the connecting rod fixing block (26) and the fourth fixing mounting hole (314) on the connecting rod fixing block mounting platform (313) are fixedly connected by screws; A circular bottom cover mounting platform (315) is installed on the cylindrical box body (31), and a bottom cover connecting hole (316) is provided on the circular bottom cover mounting platform (315). The cylindrical box (31) is fixedly connected to the bottom cover mounting hole (324) on the bottom cover mounting platform (323) of the circular support plate (32) and the support plate fixing hole (335) on the support plate mounting platform (334) of the circular bottom cover (33) by nuts and bolts.

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