Cold roll forming device for forming large-diameter steel pipe
By designing an adjustable clamping block and hydraulic cylinder structure, the problem that existing devices cannot adapt to steel pipes of different diameters is solved, and flexible clamping and efficient cold bending forming of large diameter steel pipes are achieved.
Patent Information
- Application Number
- CN202421677161.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The existing cold bending forming devices for steel pipes cannot adapt to steel pipes of different diameters, and require frequent replacement of clamping devices, increasing production costs and wasting time.
A cold bending forming device is designed to adjust the combined structure of the screw and the clamping block to achieve adjustable clamping of steel pipes of different diameters, and cold bending forming is performed using hydraulic cylinders and pressing elbows.
It realizes flexible clamping of steel pipes of different diameters, reduces production costs and time waste, and improves production efficiency.
Smart Images
Figure CN223129027U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of cold bending forming devices for large-diameter steel pipe forming, and specifically relates to a cold bending forming device for large-diameter steel pipe forming. Background Technique
[0002] A steel pipe has a hollow cross-section, and its length is much greater than its diameter or circumference. It is divided into circular, square, rectangular and special-shaped steel pipes according to the cross-sectional shape; and it is divided into carbon structural steel pipes, low-alloy structural steel pipes, alloy steel pipes and composite steel pipes according to the material. Cold bending is a metal processing method. At room temperature, metal sheets and strips are mechanically bent into profiles of certain shapes and sizes. Its products are called cold-formed profiles. The advantages of cold bending are: it can produce various extra-thin, extra-wide and complex-shaped profiles that cannot be produced by rolling; it saves metal materials; and the mechanical properties of the products are good. Common processing methods include roll bending, press bending, draw bending and folding.
[0003] In the prior art, when a cold bending forming device for steel pipes bends a steel pipe, it is necessary to fix and clamp the steel pipe. However, most of the clamping devices of the existing cold bending forming devices for steel pipes can only clamp steel pipes of the same diameter and cannot be applied to steel pipes of different diameters. It is necessary to replace the clamping device, which not only increases the production cost but also wastes a lot of time. Content of the Utility Model
[0004] The purpose of the utility model is to provide a cold bending forming device for large-diameter steel pipe forming, so as to solve the problems put forward in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solutions: a cold bending forming table, a first support plate is arranged on one side of the top of the cold bending forming table, a second support plate is arranged on the opposite side of the first support plate of the cold bending forming table, a clamping groove is opened at the top of the second support plate, a sliding plate is inserted into the clamping groove, support blocks are arranged at both ends of the inner side of the sliding plate, adjusting screws are inserted into the outer sides of the support blocks, and clamping blocks are connected to the inner sides of the adjusting screws.
[0006] Preferably, limiting strips are arranged on both sides of the clamping groove, limiting grooves are opened at both sides of the bottom of the sliding plate, and the limiting strips are inserted into the limiting grooves. The limiting strips limit the sliding plate to prevent it from falling and enable the sliding plate to slide left and right in the clamping groove.
[0007] Preferably, a placement groove is opened on the outer side of the clamping block, a hinge shaft is arranged at the top of the placement groove, a contraction ring is connected to the hinge shaft, a contraction groove is opened at the inner side of the bottom of the hinge shaft, and the contraction ring is inserted into the contraction groove. The hinge shaft can drive the contraction ring to contract and expand towards the contraction groove.
[0008] Preferably, a first knob is provided at the bottom outside of the clamping block. A first rotating shaft is inserted at the bottom of the first knob. A first gear is sleeved on the first rotating shaft near the first knob. A clamping groove is provided on the side of the bottom end of the first gear of the clamping block. A clamping block is placed in the clamping groove. A pull rod is connected to the outside of the clamping block. The clamping block can be quickly withdrawn from and inserted into the clamping groove through the pull rod.
[0009] Preferably, a first tooth groove is provided in the middle of the outside of the shrinkage ring. A second gear is provided in the middle of the first rotating shaft. The first rotating shaft is in close contact with the first tooth groove at the bottom of the shrinkage ring. The first rotating shaft can drive the second gear to engage with the first tooth groove through rotation, driving the shrinkage ring to shrink into the shrinkage groove.
[0010] Preferably, a hydraulic cylinder is provided outside the cold bending forming table. A telescopic column is inserted at the bottom of the hydraulic cylinder. The bottom of the telescopic column is connected to a pressing head. The pressing head is parallel to the clamping block. The hydraulic cylinder can control the telescopic column to drive the pressing head to extrude the large-diameter steel pipe clamped in the clamping block, and perform cold bending forming treatment on the steel pipe.
[0011] Preferably, a second knob is provided in the middle of the outside of the bottom end of the second support plate. The bottom of the second knob is connected to a second rotating shaft. A third gear is provided on the second rotating shaft. The third gear is located at the bottom of the clamping groove. A second tooth groove is provided at the bottom of the clamping groove. The second rotating shaft can engage with the second tooth groove, driving the sliding plate to slide in the clamping groove to adjust the position where the steel pipe is bent.
[0012] Compared with the prior art, the beneficial effects of the present utility model are:
[0013] For a cold bending forming device for forming large-diameter steel pipes proposed by the present utility model, when performing cold bending forming treatment on a large-diameter steel pipe, first, the clamping block is withdrawn from the clamping groove through the pull rod. Then, according to the length of the steel pipe, the nut on the adjusting screw is screwed to drive the clamping block to expand and contract, so that the two clamping blocks just clamp on both sides of the steel pipe. Then, the steel pipe is inserted into the placement groove between the shrinkage ring and the clamping block from the side of the clamping block. Then, by screwing the first rotating shaft, the second gear provided in the middle of the first rotating shaft is driven to engage with the first tooth groove on the outside of the shrinkage ring through rotation, driving the shrinkage ring to shrink and clamp the steel pipe. Then, the clamping block is inserted into the clamping groove through the pull rod again. At this time, the teeth on the inner side of the clamping groove are inserted into the tooth groove of the first gear provided on the outside of the first rotating shaft to clamp the first gear, so that the first gear clamps and fixes the first rotating shaft, preventing the clamping groove from driving the second gear to rotate and engage with the first tooth groove when the steel pipe is bent, resulting in loosening of the clamping of the shrinkage ring on the steel pipe. Then, the hydraulic cylinder in the middle of the outside of the first support plate starts to drive the telescopic column to expand and contract, so that the pressing head at the bottom of the telescopic column bends the steel pipe clamped between the two clamping blocks for cold bending treatment. Description of the Drawings
[0014] Figure 1 Schematic diagram of the three-dimensional structure of the present utility model;
[0015] Figure 2 is Figure 1 Enlarged schematic diagram of the structure at position A in
[0016] Figure 3 Schematic diagram of the cross-sectional structure of the card slot of the present utility model;
[0017] Figure 4 Schematic diagram of the cross-sectional structure of the clamping block of the present utility model;
[0018] Figure 5 Schematic diagram of the cross-sectional structure of the other side of the clamping block of the present utility model;
[0019] Figure 6 Schematic diagram of the three-dimensional structure of the other side of the present utility model;
[0020] Figure 7 Schematic diagram of the cross-sectional structure of the second support plate of the present utility model.
[0021] In the figure: cold bending forming table 1, first support plate 2, hydraulic cylinder 3, telescopic column 4, pressing head 5, second support plate 6, card slot 7, sliding plate 8, support block 9, adjusting screw 10, clamping block 11, hinge shaft 12, shrinkage ring 13, first knob 14, first rotating shaft 15, card slot 16, clamping block 17, pull rod 18, first gear 19, shrinkage groove 20, first tooth groove 21, second gear 22, second knob 23, limit groove 24, limit strip 25, second rotating shaft 26, third gear 27, second tooth groove 28. Specific embodiments
[0022] In order to clearly and completely describe the purpose, technical solution of the present utility model, and make the advantages more clearly understood, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model. Embodiment 1
[0023] Please refer to Figures 1 - 7, the present utility model provides a technical solution: a cold bending forming table 1, a first support plate 2 is arranged on one side of the top of the cold bending forming table 1, a second support plate 6 is arranged on the opposite side of the first support plate 2 of the cold bending forming table 1, a clamping groove 7 is opened at the top of the second support plate 6, a sliding plate 8 is inserted into the clamping groove 7, support blocks 9 are arranged at both ends of the inner side of the sliding plate 8, adjusting screws 10 are inserted into the outer sides of the support blocks 9, and clamping blocks 11 are connected to the inner sides of the adjusting screws 10; by screwing the nuts on the adjusting screws 10, the adjusting screws 10 drive the clamping blocks 11 to expand and contract, so that the two clamping blocks 11 just clamp on both sides of the steel pipe. Embodiment 2
[0024] On the basis of Embodiment 1, limiting strips 25 are arranged on both sides of the clamping groove 7, limiting grooves 24 are opened at both sides of the bottom of the sliding plate 8, the limiting strips 25 are inserted into the limiting grooves 24, the limiting strips 25 limit the sliding plate 8 to prevent the sliding plate 8 from falling, and enable the sliding plate 8 to slide left and right in the clamping groove 7; placing grooves are opened on the outer sides of the clamping blocks 11, hinge shafts 12 are arranged at the tops of the placing grooves, shrinkage rings 13 are connected to the hinge shafts 12, shrinkage grooves 20 are opened at the inner sides of the bottoms of the hinge shafts 12, and the shrinkage rings 13 are inserted into the shrinkage grooves 20, and the hinge shafts 12 can drive the shrinkage rings 13 to shrink and expand towards the shrinkage grooves 20; a first knob 14 is arranged at the bottom of the outer side of the clamping block 11, a first rotating shaft 15 is inserted into the bottom of the first knob 14, a first gear 19 is sleeved on the first rotating shaft 15 close to the first knob 14, a clamping groove 16 is opened at the bottom side of the first gear 19 on the bottom end side of the clamping block 11, a clamping block 17 is placed in the clamping groove 16, a pull rod 18 is connected to the outer side of the clamping block 17, and the clamping block 17 can be quickly drawn out and inserted into the clamping groove 16 through the pull rod 18; the first gear 19 is clamped, so that the first gear 19 clamps and fixes the first rotating shaft 15, and prevents the clamping groove 16 from driving the second gear 22 to rotate and engage with the first tooth groove 21 when the steel pipe is bent, resulting in loosening of the clamping of the shrinkage ring 13 on the steel pipe. Embodiment 3
[0025] On the basis of the second embodiment, a first tooth groove 21 is provided in the middle of the outer side of the shrinkage ring 13, a second gear 22 is provided in the middle of the first rotating shaft 15, the first rotating shaft 15 is in close contact with the first tooth groove 21 at the bottom of the shrinkage ring 13, and the first rotating shaft 15 can drive the second gear 22 to engage with the first tooth groove 21 by rotation, driving the shrinkage ring 13 to shrink into the shrinkage groove 20; a hydraulic cylinder 3 is provided on the outer side of the cold bending forming table 1, a telescopic column 4 is inserted at the bottom of the hydraulic cylinder 3, the bottom of the telescopic column 4 is connected with a pressing head 5, the pressing head 5 is parallel to the clamping block 11, and the hydraulic cylinder 3 can control the telescopic column 4 to drive the pressing head 5 to extrude the large-diameter steel pipe clamped in the clamping block 11, and perform cold bending forming treatment on the steel pipe; a second knob 23 is provided in the middle of the outer bottom end of the second support plate 6, the bottom of the second knob 23 is connected with a second rotating shaft 26, a third gear 27 is provided on the second rotating shaft 26, the third gear 27 is located at the bottom of the card slot 7, a second tooth groove 28 is provided at the bottom of the card slot 7, and the second rotating shaft 26 can engage with the second tooth groove 28 to drive the sliding plate 8 to slide in the card slot 7 to adjust the position of the steel pipe where it is bent; the second knob 23 drives the third gear 27 connected to the second rotating shaft 26 to start rotating, so that the third gear 27 engages with the second tooth groove 28 at the bottom of the sliding plate 8, driving the sliding plate 8 to slide in the card slot 7, so that the card slot 7 displaces the steel pipe located between the two groups of clamping blocks 11, and the pressing head 5 at the bottom of the telescopic column 4 is aligned with different positions of the steel pipe according to requirements.
[0026] In actual use, when cold bending a large-diameter steel pipe, first pull out the clamping block 17 from the clamping groove 16 through the pull rod 18. Then, according to the length of the steel pipe, turn the nut on the adjusting screw rod 10. The adjusting screw rod 10 drives the clamping block 11 to expand and contract, so that the two groups of clamping blocks 11 just clamp on both sides of the steel pipe. Then insert the steel pipe from the side of the clamping block 11 into the placement groove between the shrinkage ring 13 and the clamping block 11. Then, by turning the first rotating shaft 15, the first rotating shaft 15 drives the second gear 22 provided in the middle of the first rotating shaft 15 to engage with the first tooth groove 21 on the outer side of the shrinkage ring 13, driving the shrinkage ring 13 to contract and clamp the steel pipe. Then, insert the clamping block 17 into the clamping groove 16 through the pull rod 18 again. At this time, the teeth on the inner side of the clamping groove 16 are inserted into the tooth groove of the first gear 19 provided on the outer side of the first rotating shaft 15 to clamp the first gear 19, so that the first gear 19 clamps and fixes the first rotating shaft 15, preventing the clamping groove 16 from driving the second gear 22 to rotate and engage with the first tooth groove 21 when bending the steel pipe, resulting in the loosening of the clamping of the shrinkage ring 13 on the steel pipe. Then, the hydraulic cylinder 3 in the middle of the outer side of the first support plate 2 starts to drive the telescopic column 4 to expand and contract, so that the pressing head 5 at the bottom of the telescopic column 4 bends the steel pipe clamped between the two groups of clamping blocks 11 for cold bending treatment; when it is necessary to change the position of the cold bending of the steel pipe, the second knob 23 on the outer side of the middle of the first support plate 2 can be turned. The second knob 23 drives the third gear 27 connected to the second rotating shaft 26 to start rotating, so that the third gear 27 engages with the second tooth groove 28 at the bottom of the sliding plate 8, driving the sliding plate 8 to slide in the clamping groove 7, so that the clamping groove 7 drives the steel pipe between the two groups of clamping blocks 11 to displace, and the pressing head 5 at the bottom of the telescopic column 4 is aligned with different positions of the steel pipe according to the requirements.
[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A cold bending forming device for forming large-diameter steel pipes, characterized in that: The cold bending forming device for forming large-diameter steel pipes includes: a cold bending forming table (1). On one side of the top of the cold bending forming table (1), there is a first support plate (2). On the opposite side of the first support plate (2) of the cold bending forming table (1), there is a second support plate (6). A clamping groove (7) is opened at the top of the second support plate (6). A sliding plate (8) is inserted into the clamping groove (7). At both inner ends of the sliding plate (8), there are support blocks (9). An adjusting screw (10) is inserted into the outer side of the support block (9). The inner side of the adjusting screw (10) is connected to a clamping block (11).
2. The cold bending forming device for forming large-diameter steel pipes according to claim 1, wherein: On both sides of the clamping groove (7), there are limit strips (25). On both sides of the bottom of the sliding plate (8), there are limit grooves (24). The limit strips (25) are inserted into the limit grooves (24). The limit strips (25) limit the sliding plate (8) to prevent the sliding plate (8) from falling and enable the sliding plate (8) to slide left and right in the clamping groove (7).
3. The cold bending forming device for forming large-diameter steel pipes according to claim 2, wherein: On the outer side of the clamping block (11), there is a placement groove. At the top of the placement groove, there is a hinge shaft (12). A contraction ring (13) is connected to the hinge shaft (12). A contraction groove (20) is opened at the inner bottom of the hinge shaft (12). The contraction ring (13) is inserted into the contraction groove (20). The hinge shaft (12) can drive the contraction ring (13) to contract and expand into the contraction groove (20).
4. A cold bending forming device for forming large-diameter steel pipes according to claim 3, characterized in that: At the outer bottom of the clamping block (11), there is a first knob (14). A first rotating shaft (15) is inserted into the bottom of the first knob (14). A first gear (19) is sleeved on the side of the first rotating shaft (15) close to the first knob (14). A clamping groove (16) is opened at the bottom side of the first gear (19) on the clamping block (11). A clamping block (17) is placed in it. A pull rod (18) is connected to the outer side of the clamping block (17). The clamping block (17) can be quickly withdrawn from and inserted into the clamping groove (16) through the pull rod (18).
5. The cold bending forming device for forming large-diameter steel pipes according to claim 4, characterized in that: A first tooth groove (21) is arranged in the middle of the outer side of the contraction ring (13). A second gear (22) is arranged in the middle of the first rotating shaft (15). The first rotating shaft (15) is in close contact with the first tooth groove (21) at the bottom of the contraction ring (13). The first rotating shaft (15) can drive the second gear (22) to mesh with the first tooth groove (21) by rotation, driving the contraction ring (13) to contract into the contraction groove (20).
6. The cold bending forming device for forming large-diameter steel pipes according to claim 5, characterized in that: A hydraulic cylinder (3) is arranged on the outer side of the cold bending forming table (1). A telescopic column (4) is inserted into the bottom of the hydraulic cylinder (3). The bottom of the telescopic column (4) is connected to a pressing head (5). The pressing head (5) is parallel to the clamping block (11). The hydraulic cylinder (3) can control the telescopic column (4) to drive the pressing head (5) to extrude the large-diameter steel pipe clamped in the clamping block (11) for cold bending forming treatment of the steel pipe.
7. The cold bending forming device for forming large-diameter steel pipes according to claim 6, characterized in that: In the middle of the outer side of the bottom end of the second support plate (6), a second knob (23) is provided. The bottom of the second knob (23) is connected to a second rotating shaft (26). A third gear (27) is provided on the second rotating shaft (26). The third gear (27) is located at the bottom of the card slot (7). A second tooth groove (28) is provided at the bottom of the card slot (7). The second rotating shaft (26) can be engaged with the second tooth groove (28) to drive the sliding plate (8) to slide in the card slot (7), so as to adjust the position where the steel pipe is bent.