A petal-shaped steel pipe forming hole prefabricated core pipe tool

Abstract

The utility model discloses a petal formula steel pipe forming hole prefabricated core pipe frock, including middle axle, outer expansion mechanism and outer plate, the utility model discloses an outer expansion mechanism is set up to the outside of middle axle, and the outer plate of three groups is equipped with equal interval to the outer end of outer expansion mechanism, and outer expansion mechanism includes connecting inner plate, moving groove, moving bolt, connecting block no.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe forming technology, specifically a tooling for prefabricating core tubes for forming petal-shaped steel pipe holes. Background Technology

[0002] Pre-formed core tube tooling is a specialized tool used for forming and processing metal pipes (such as steel pipes). It typically consists of a mandrel (core tube), a mold, a positioning mechanism, etc., and is used to pre-control the shape, size, or hole position of the pipe during the processing to improve forming accuracy and efficiency.

[0003] Existing tooling for prefabricated core tubes used in cable prefabrication has the following shortcomings: local wrinkles and uneven wall thickness are easily generated during through-hole forming, resulting in insufficient smoothness of the inner wall of the tube, which may damage the cable; the traditional step-by-step processing method (forming first and then punching) may cause hole position displacement and tube wall cracking; manual positioning has low efficiency and poor consistency; tooling adaptability is poor; a single mold structure is difficult to adapt to the production of multi-specification tubes; customization costs are high; existing tooling is difficult to achieve one-time forming and stress concentration at the hole edge affects durability; it is difficult to meet people's usage needs and has certain limitations. Utility Model Content

[0004] The purpose of this utility model is to provide a tooling for prefabricating core tubes with petal-shaped steel pipe forming holes to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a petal-shaped steel pipe forming hole prefabricated core tube tooling, including a central shaft, with a set of outward expansion mechanisms connected to the front and rear positions of the outer side of the central shaft, and three sets of outer plates connected to the outer ends of the outward expansion mechanisms. A set of fixing blocks is provided at the front end of the central shaft, and a set of rotating parts are connected to the outer side of the central shaft near the front end.

[0006] Preferably, the expansion mechanism includes a connecting inner plate, a moving groove, a moving bolt, a connecting block one, a moving sleeve, an expansion arm, and a connecting block two. A set of connecting inner plates is provided on the outer side of the central shaft near the middle end. A set of moving grooves is provided on the surface of the connecting inner plates corresponding to the position of the outer plate. A set of moving bolts is provided in each moving groove. One end of the moving bolt is connected to the connecting block one. The end of the connecting block one near the outer plate is connected to the inner side of the outer plate. A set of moving sleeves is provided on the outer side of the central shaft near the rotating part. Three sets of expansion arms are connected to the outer side of the moving sleeves. A set of connecting blocks two is provided on the other end of each expansion arm. The other end of the connecting blocks two is connected to the inner side of the outer plate.

[0007] Preferably, the outer side of the central shaft is provided with external threads.

[0008] Preferably, the rotating component is sleeved on the outside of the central shaft, and the inner side of the rotating component is provided with an internal thread corresponding to the central shaft.

[0009] Preferably, the rotating component is provided with a set of force-applying arms at both its left and right ends.

[0010] Preferably, the outer panels are spaced at equal intervals.

[0011] Preferably, the fixing block is triangular in shape, with all ends being arc-shaped and opposite to the outer plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The expansion mechanism is located on the outside of the central axis. The outer end of the expansion mechanism is provided with three sets of outer plates at equal intervals. The expansion mechanism includes components such as connecting inner plate, moving groove, moving bolt, connecting block one, moving sleeve, expansion arm and connecting block two. The outer ends of connecting block one and connecting block two are connected to the inner side of the outer plate. The moving sleeve is sleeved on the outside of the central axis. When the moving sleeve moves along the central axis, it can drive the expansion arm to push the outer plate outward, which makes it easy to adjust the expansion size of the outer plate to adapt to different usage needs and has strong practicality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the external expansion mechanism of this utility model.

[0014] In the diagram: central shaft-1, outer expansion mechanism-2, outer plate-3, fixed block-11, rotating part-12, connecting inner plate-21, moving groove-22, moving bolt-23, connecting block one-24, moving sleeve-25, outer expansion arm-26, connecting block two-27. Detailed Implementation

[0015] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0016] Please see Figure 1-2 This utility model provides a prefabricated core tube tooling for forming holes in petal-shaped steel pipes, including a central shaft 1. A set of outward expansion mechanisms 2 are connected to the front and rear positions of the outer side of the central shaft 1. Three sets of outer plates 3 are connected to the outer ends of the outward expansion mechanisms 2 at equal intervals. A set of fixing blocks 11 are fixedly connected to the front end of the central shaft 1, which facilitates connection and fixation with external fixing equipment. It can cooperate with external fixing devices to achieve quick centering and locking. A set of rotating parts 12 are sleeved on the outer side of the central shaft 1 near the front end. The outer side of the central shaft 1 is provided with external threads, and the rotating parts 12 are sleeved on the outer side of the central shaft 1. The inner side of the rotating parts 12 is provided with internal threads corresponding to the central shaft 1. A set of force arms is fixedly connected to both the left and right ends of the rotating parts 12. By applying force to the force arms, the rotating parts 12 can be rotated and moved along the central shaft 1.

[0017] Please see Figure 2 This utility model provides a tooling for prefabricated core tubes with petal-shaped steel pipe forming holes. The outer expansion mechanism 2 includes a connecting inner plate 21, a moving groove 22, a moving bolt 23, a connecting block 1 24, a moving sleeve 25, an outer expansion arm 26, and a connecting block 27. A set of connecting inner plates 21 are fixedly connected to the outer side of the central shaft 1 near the middle. The fixing block 11 is triangular in shape with arc-shaped ends, facing the outer plate 3. A set of moving grooves 22 are opened on the surface of the inner plate 21 corresponding to the position of the outer plate 3. A set of moving bolts 23 are slidably connected in the moving grooves 22. One end of the moving bolt 23 is fixedly connected to the connecting block 24. The end of the connecting block 24 near the outer plate 3 is fixedly connected to the inner side of the outer plate 3. When the outer plate 3 expands outward, the moving bolts 23 can be moved along the moving grooves 22 by the connecting block 24 to ensure stability during movement. A set of movable sleeves 25 is fitted on the outer side of the central shaft 1 near the rotating component 12. Three sets of outward expanding arms 26 are hinged to the outer side of the movable sleeves 25. A set of connecting blocks 27 is hinged to the other end of each outward expanding arm 26. The other end of the connecting blocks 27 is fixedly connected to the inner side of the outer plate 3. When the movable sleeves 25 are pressed inward by the rotating component 12, they can press the rotating outward expanding arms 26 and expand the three sets of outer plates 3 outward through the connecting blocks 27.

[0018] The working principle is as follows: In use, by rotating the rotating component 12, the rotating component 12 moves along the central axis 1 towards the moving sleeve 25 and squeezes the moving sleeve 25, causing it to rotate outward and expand the outer arm 26. Through the connecting block 27, the three sets of outer plates 3 expand outward. When the outer plates 3 expand outward, the connecting block 1 24 can drive the moving bolt 23 to move along the moving groove 22, ensuring the stability during movement, realizing equidistant radial expansion, ensuring the roundness of the hole, avoiding the deviation of traditional manual adjustment, realizing high-precision controllable expansion, and adapting to complex hole diameter requirements.

[0019] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tooling for prefabricating core tubes with petal-shaped steel pipe forming holes, characterized in that: Includes a central shaft (1), and an outer expansion mechanism (2) is connected to the front and rear positions of the outer side of the central shaft (1), and three outer plates (3) are connected to the outer ends of the outer expansion mechanism (2). The central shaft (1) has a set of fixing blocks (11) at the front end, and a set of rotating parts (12) are connected to the outer side of the central shaft (1) near the front end.

2. The tooling for prefabricating core tubes with petal-shaped steel pipe forming holes according to claim 1, characterized in that: The expansion mechanism (2) includes a connecting inner plate (21), a moving groove (22), a moving bolt (23), a connecting block one (24), a moving sleeve (25), an expansion arm (26), and a connecting block two (27). A set of connecting inner plates (21) is provided on the outer side of the central shaft (1) near the middle. A set of moving grooves (22) is provided on the surface of each connecting inner plate (21) corresponding to the position of the outer plate (3). A set of moving bolts (23) is provided in each moving groove (22). One end of the movable bolt (23) is connected to a connecting block one (24). The end of the connecting block one (24) near the outer plate (3) is connected to the inner side of the outer plate (3). A set of movable sleeves (25) is provided on the outer side of the central shaft (1) near the rotating part (12). Three sets of outer expansion arms (26) are connected to the outer side of the movable sleeves (25). A set of connecting blocks two (27) is provided on the other end of each of the outer expansion arms (26). The other end of the connecting blocks two (27) is connected to the inner side of the outer plate (3).

3. The prefabricated core tube tooling for forming holes in petal-shaped steel pipes according to claim 2, characterized in that: The outer side of the central shaft (1) is provided with external threads.

4. The prefabricated core tube tooling for forming holes in petal-shaped steel pipes according to claim 2, characterized in that: The rotating part (12) is sleeved on the outside of the central shaft (1), and the inner side of the rotating part (12) is provided with an internal thread corresponding to the central shaft (1).

5. The prefabricated core tube tooling for forming holes in petal-shaped steel pipes according to claim 4, characterized in that: The rotating component (12) is provided with a set of force-applying arms at both the left and right ends.

6. The prefabricated core tube tooling for forming holes in petal-shaped steel pipes according to claim 2, characterized in that: The outer panel (3) is set at equal intervals.

7. The tooling for prefabricating core tubes with petal-shaped steel pipe forming holes according to claim 2, characterized in that: The fixing block (11) is triangular in shape, with arc-shaped ends, and is opposite to the outer plate (3).

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