Round pipe forming device

Abstract

The invention relates to the technical field of circular pipe machining, and discloses a circular pipe forming device which comprises a base, a plurality of guide columns and two mounting vertical plates are fixedly mounted on the upper side of the base, a lifting platform is slidably mounted on the surfaces of the guide columns, and first hydraulic oil cylinders are fixedly mounted at the top ends of the guide columns; the first hydraulic oil cylinder drives the lifting platform to move up and down, two first roll shafts are rotationally installed between the two installation vertical plates, the distance between the two first roll shafts is fixed, two second roll shafts are rotationally installed on the upper sides of the two installation vertical plates, and the distance between the two second roll shafts is adjustable. According to the round pipe forming device, the two first roller shafts are arranged, the bending roller is arranged on the upper side, a plate is placed between the bending roller and the first roller shafts, the plate can be bent into a round pipe shape through downward pressing and rotation of the bending roller, and the effect that round pipes with different diameters are bent is achieved by changing the downward pressing depth of the bending roller through the design.

Description

Technical Field

[0001] The invention relates to the technical field of round tube processing, and in particular to a round tube forming device. Background Art

[0002] Generally, a round tube is formed by processing a steel belt through a round tube forming machine. For example, in the prior art, a patent document with a publication number of CN217667545U discloses a round tube forming device, which relates to the field of round tubes and includes a machine body and a bending mechanism arranged on the machine body. The bending mechanism includes two clamping wheels and a connecting rod. The two clamping wheels are rotatably connected to the machine body, and the axial directions of the two clamping wheels are vertically arranged. A steel belt is horizontally arranged between the two clamping wheels, and the two sides of the length direction of the steel belt are respectively abutted against the two clamping wheels; one end of the connecting rod is hinged to the machine body, and the hinge axis of the connecting rod and the machine body is parallel to the width direction of the steel belt; a pressure bending wheel is rotatably arranged at the other end of the connecting rod, and the rotation direction of the pressure bending wheel is the same as the transmission direction of the steel belt, and the distance from the side of the pressure bending wheel away from the hinge axis to the hinge axis is greater than the distance from the plane where the steel belt is located to the hinge axis; a spring is fixedly arranged between the connecting rod and the machine body, and the spring is located on the side of the connecting rod close to the clamping wheel.

[0003] In the actual production process, the above-mentioned round tube forming device is not suitable for manufacturing large-diameter round tubes. The size of large-diameter round tubes often needs to be adjusted to meet customers' customization needs. However, the existing round tube forming device is inconvenient to adjust and determine the product size, which brings inconvenience to use. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the existing round tube forming devices in the prior art, that is, it is inconvenient to adjust and determine the product size, and to propose a round tube forming device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a round tube forming device, including a base, a plurality of guide columns and two mounting vertical plates are fixedly installed on the upper side of the base, a lifting platform is slidably installed on the surface of the plurality of guide columns, a first hydraulic cylinder is fixedly installed on the top of the guide column, and the first hydraulic cylinder drives the lifting platform to move up and down.

[0006] Two first rollers are rotatably mounted between the two mounting vertical plates, and the distance between the two first rollers is fixed. Two second rollers are rotatably mounted on the upper sides of the two mounting vertical plates, and the distance between the two second rollers is adjustable.

[0007] A lifting seat is slidably installed on the surface of the guide column, a second hydraulic cylinder for driving the lifting seat to move up and down is fixedly installed on the upper surface of the base, a driving motor is fixedly installed on the end of the lifting seat, and a bending roller is fixedly installed on the rotating end of the driving motor. The bending roller is arranged in parallel on the upper side of the two first roller shafts, and the plate is placed between the bending roller and the first roller shaft. The plate can be bent into a circular tube by pressing down and rotating the bending roller.

[0008] Preferably, the ends of the two first rollers are rotatably mounted with swing arms, and the ends of the two second rollers are rotatably connected to the upper ends of the swing arms on both sides, respectively. The upper surface of the mounting vertical plate is a step surface, and the ends of the second rollers are placed on the step surface. When the swing arms rotate, the spacing between the second rollers on both sides can be adjusted.

[0009] Preferably, an adjustment component is provided on the lower side of the lifting platform, and the spacing between the two second rollers is controlled by the adjustment component; specifically, the adjustment component includes a double-threaded rod and a limit plate, and a slide groove is provided on the lower surface of the lifting platform, and the double-threaded rod is rotatably installed in the slide groove, and two transmission sliders are slidably installed in the slide groove, and the double-threaded rod is threadedly connected to the two transmission sliders, and the lower surfaces of the two transmission sliders are fixedly installed with limit plates, and the opposite surfaces of the two limit plates are provided with inclined surfaces, and the top end of the swing arm is in sliding contact with the inclined surface.

[0010] The double-threaded rod is a structure with threads on both end surfaces, and the pitch of the threads at both ends of the double-threaded rod is the same and the spiral direction is opposite. The end of the double-threaded rod extends to the outside of the lifting platform. A hand wheel is fixedly installed on the end of the double-threaded rod. The lifting platform presses down and rotates the double-threaded rod to achieve the function of adjusting the distance between the two second rollers.

[0011] Preferably, a third hydraulic cylinder is fixedly installed on the upper surface of the lifting platform, and a roller is rotatably installed on the telescopic end of the third hydraulic cylinder. When the telescopic end of the third hydraulic cylinder is extended downward, the roller can be pressed down to the surface of the bending roller. The roller is used to provide auxiliary pressure for the end of the bending roller, which can prevent the taper of the bent round tube from being too large. The roller is away from the bending roller, and the round tube can be pulled out from the end of the bending roller, thereby achieving the effect of convenient unloading.

[0012] Preferably, two protective side blocks are fixedly installed between the two mounting vertical plates, and a feed opening is opened on the surface of one of the protective side blocks. A feed platform is fixedly installed on the upper surface of the base, and the upper surface of the feed platform is flush with the lower edge of the feed opening. Two width limiting strips are fixedly installed on the upper surface of the feed platform. When loading, the plate is placed on the upper surface of the feed platform and pushed to the upper side of the two first rollers through the feed opening.

[0013] The present invention has the following beneficial effects:

[0014] 1. The round tube forming device proposed in the present invention is provided with two first rollers and a bending roller on the upper side. The plate is placed between the bending roller and the first roller. The plate can be bent into a round tube by pressing down and rotating the bending roller. This design changes the pressing depth of the bending roller to achieve the effect of bending round tubes of different diameters.

[0015] 2. The round tube forming device proposed in the present invention is provided with two second rollers, and the distance between the two second rollers is adjustable. When the first roller and the second roller are in contact with the surface of the round tube, the diameter of the round tube can be determined from the distance between the two second rollers. In addition, during the rotation of the round tube, if the roundness of the round tube is qualified, the two second rollers rotate at the same time. If the round tube has a certain ovality, one of the second rollers stops rotating, so that the device has the function of judging the diameter and roundness of the round tube more intuitively, without stopping for measurement, thereby improving processing efficiency.

[0016] 3. The round tube forming device proposed in the present invention has a lifting platform and rollers on the lower side of the lifting platform. The rollers can be used to provide auxiliary pressure for the end of the bending roller, which can prevent the taper of the bent round tube from being too large, making adjustment more convenient and ensuring product quality. Moreover, when the lifting platform moves up, the rollers are away from the bending rollers, and the round tubes can be pulled out from the ends of the bending rollers, thereby achieving the effect of convenient unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The three-dimensional structure diagram of the round tube forming device proposed by the present invention Figure 1 ;

[0018] Figure 2 The three-dimensional structure diagram of the round tube forming device proposed by the present invention Figure 2 ;

[0019] Figure 3 The side cross-sectional structure of the round tube forming device proposed by the present invention is shown in FIG. Figure 1 ;

[0020] Figure 4 The side cross-sectional structure of the round tube forming device proposed by the present invention is shown in FIG. Figure 2 .

[0021] In the figure: 1 base, 2 guide column, 3 mounting plate, 4 lifting platform, 5 first hydraulic cylinder, 6 first roller, 7 second roller, 8 lifting seat, 9 second hydraulic cylinder, 10 driving motor, 11 bending roller, 12 swing arm, 13 step surface, 14 double threaded rod, 15 limit plate, 16 transmission slide block, 17 hand wheel, 18 third hydraulic cylinder, 19 roller, 20 protective side block, 21 feed opening, 22 feed platform, 23 width limit strip. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] Reference Figure 1-Figure 4 A round tube forming device includes a base 1, a plurality of guide columns 2 and two mounting vertical plates 3 are fixedly installed on the upper side of the base 1, a lifting platform 4 is slidably installed on the surface of the plurality of guide columns 2, a first hydraulic cylinder 5 is fixedly installed on the top of the guide column 2, and the first hydraulic cylinder 5 drives the lifting platform 4 to move up and down.

[0025] Two first rollers 6 are rotatably mounted between the two mounting uprights 3 , and the distance between the two first rollers 6 is fixed. Two second rollers 7 are rotatably mounted on the upper sides of the two mounting uprights 3 , and the distance between the two second rollers 7 is adjustable.

[0026] A lifting seat 8 is slidably installed on the surface of the guide column 2, and a second hydraulic cylinder 9 for driving the lifting seat 8 to move up and down is fixedly installed on the upper surface of the base 1. A driving motor 10 is fixedly installed on the end of the lifting seat 8, and a bending roller 11 is fixedly installed on the rotating end of the driving motor 10. The bending roller 11 is arranged in parallel on the upper side of the two first roller shafts 6.

[0027] Specifically, the ends of the two first rollers 6 are rotatably mounted with swing arms 12, the ends of the two second rollers 7 are rotatably connected to the upper ends of the swing arms 12 on both sides, and the upper surface of the mounting plate 3 is a step surface 13, and the ends of the second rollers 7 are placed on the step surface 13. Figure 3 shown.

[0028] In this embodiment, an adjusting component is disposed on the lower side of the lifting platform 4 , and the distance between the two second rollers 7 is controlled by the adjusting component, so that the distance between the two second rollers 7 can be adjusted.

[0029] The adjustment component includes a double-threaded rod 14 and a limit plate 15. A slide groove is provided on the lower surface of the lifting platform 4. The double-threaded rod 14 is rotatably installed in the slide groove. Two transmission sliders 16 are slidably installed in the slide groove, and the double-threaded rod 14 is threadedly connected to the two transmission sliders 16. The limit plates 15 are fixedly installed on the lower surfaces of the two transmission sliders 16. The opposite surfaces of the two limit plates 15 are provided with inclined surfaces, and the top end of the swing arm 12 is in sliding contact with the inclined surface.

[0030] The double-threaded rod 14 is a structure with threads on both ends, and the pitch of the threads at both ends of the double-threaded rod 14 is the same and the spiral direction is opposite. The end of the double-threaded rod 14 extends to the outside of the lifting platform 4. A handwheel 17 is fixedly installed on the end of the double-threaded rod 14. When the double-threaded rod 14 is rotated, the limit plates 15 on both sides are driven to move closer or farther from each other synchronously.

[0031] like Figure 4 As shown, when the spacing between the limit plates 15 on both sides is fixed, the lifting platform 4 moves downward, and the top end of the swing arm 12 slides along the inclined surface of the limit plate 15, so that the second rollers 7 on both sides approach each other at a constant speed.

[0032] In this embodiment, a third hydraulic cylinder 18 is fixedly installed on the upper surface of the lifting platform 4, and a roller 19 is rotatably installed on the telescopic end of the third hydraulic cylinder 18. When the telescopic end of the third hydraulic cylinder 18 is extended downward, the roller 19 can be pressed down to the surface of the bending roller 11.

[0033] Two protective side blocks 20 are fixedly installed between the two mounting plates 3, and a feed opening 21 is opened on the surface of one of the protective side blocks 20. A feed platform 22 is fixedly installed on the upper surface of the base 1. The upper surface of the feed platform 22 is flush with the lower edge of the feed opening 21, and two width limiting strips 23 are fixedly installed on the upper surface of the feed platform 22.

[0034] Working principle: During use, Figure 3 As shown, the plate is placed on the feeding platform 22, and the plate is pushed from the feeding opening 21 to the upper side of the two first rollers 6, and the second hydraulic cylinder 9 contracts to press the bending roller 11 down on the upper surface of the plate. At the same time, when the telescopic end of the third hydraulic cylinder 18 extends downward, the roller 19 is pressed down to the surface of the bending roller 11, and the driving motor 10 drives the bending roller 11 to rotate, bending the plate into a roughly circular tube shape;

[0035] Then, if Figure 4As shown, the lifting platform 4 moves downward, and by rotating the double-threaded rod 14, the spacing of the limit plates 15 on both sides is adjusted to make the second rollers 7 on both sides approach each other. When the spacing between the two second rollers 7 is constant, the diameter of the round tube between the first roller 6 and the second roller 7 is fixed. At this time, the first roller 6 and the second roller 7 are both in contact with the surface of the round tube. In the process of rotation of the round tube, if the roundness of the round tube is qualified, the two second rollers 7 rotate at the same time. If the round tube has a certain ellipticity, there will be a second roller 7 that does not contact the surface of the round tube and is in a stopped rotating state, so that the device has a more intuitive function of judging the diameter and roundness of the round tube, without stopping for measurement, thereby improving processing efficiency. During operation, the spacing between the two second rollers 7 can be controlled to determine whether the diameter of the round tube reaches the preset size. It should be noted that in the process of bending the round tube, the diameter of the round tube is slowly reduced until it reaches the preset size. In this process, the roundness of the round tube is corrected by adjusting the downward pressure depth of the bending roller 11.

[0036] The round tube forming device proposed in the present invention is provided with two first rollers 6 and a bending roller 11 on the upper side. The plate is placed between the bending roller 11 and the first roller 6. The plate can be bent into a round tube by pressing down and rotating the bending roller 11. This design changes the pressing depth of the bending roller 11 to achieve the effect of bending round tubes of different diameters. A lifting platform 4 is provided and a roller 19 is provided on the lower side of the lifting platform 4. The roller 19 can be used to provide auxiliary pressure for the end of the bending roller 11, which can prevent the taper of the bent round tube from being too large, making the adjustment more convenient and ensuring the product quality. Moreover, when the lifting platform 4 moves upward, the roller 19 is away from the bending roller, and the round tube can be pulled out from the end of the bending roller 11, thereby achieving the effect of convenient unloading.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A round tube forming device, comprising a base (1), a plurality of guide columns (2) and two mounting uprights (3) being fixedly mounted on the upper side of the base (1), characterized in that: A lifting platform (4) is slidably mounted on the surfaces of the plurality of guide columns (2), a first hydraulic cylinder (5) is fixedly mounted on the top of the guide column (2), and the first hydraulic cylinder (5) drives the lifting platform (4) to move up and down; Two first rollers (6) are rotatably mounted between the two mounting uprights (3), the spacing between the two first rollers (6) is fixed, and two second rollers (7) are rotatably mounted on the upper sides of the two mounting uprights (3), the spacing between the two second rollers (7) is adjustable; A lifting seat (8) is slidably mounted on the surface of the guide column (2), a second hydraulic cylinder (9) for driving the lifting seat (8) to move up and down is fixedly mounted on the upper surface of the base (1), a driving motor (10) is fixedly mounted on the end of the lifting seat (8), a bending roller (11) is fixedly mounted on the rotating end of the driving motor (10), and the bending roller (11) is arranged in parallel on the upper side of the two first roller shafts (6).

2. A round tube forming device according to claim 1, characterized in that: The ends of the two first rollers (6) are rotatably mounted with swing arms (12), the ends of the two second rollers (7) are rotatably connected to the upper ends of the swing arms (12) on both sides, and the upper surface of the mounting vertical plate (3) is a step surface (13), and the ends of the second rollers (7) are placed on the step surface (13).

3. A round tube forming device according to claim 2, characterized in that: An adjustment component is provided on the lower side of the lifting platform (4), and the distance between the two second rollers (7) is controlled by the adjustment component.

4. A round tube forming device according to claim 3, characterized in that: The adjustment assembly comprises a double threaded rod (14) and a limit plate (15). A slide groove is provided on the lower surface of the lifting platform (4). The double threaded rod (14) is rotatably installed in the slide groove. Two transmission sliders (16) are slidably installed in the slide groove. The double threaded rod (14) is threadedly connected to the two transmission sliders (16). The limit plates (15) are fixedly installed on the lower surfaces of the two transmission sliders (16). The opposite surfaces of the two limit plates (15) are provided with inclined surfaces. The top end of the swing arm (12) is in sliding contact with the inclined surface.

5. A round tube forming device according to claim 4, characterized in that: The double-threaded rod (14) is a structure in which threads are arranged on both ends of the surface, and the threads at both ends of the double-threaded rod (14) have the same pitch and opposite spiral directions. The end of the double-threaded rod (14) extends to the outside of the lifting platform (4), and a hand wheel (17) is fixedly installed on the end of the double-threaded rod (14).

6. A round tube forming device according to claim 5, characterized in that: A third hydraulic cylinder (18) is fixedly mounted on the upper surface of the lifting platform (4), and a roller (19) is rotatably mounted on the telescopic end of the third hydraulic cylinder (18). When the telescopic end of the third hydraulic cylinder (18) is extended downward, the roller (19) can be pressed down to the surface of the bending roller (11).

7. A round tube forming device according to any one of claims 1 to 6, characterized in that: Two protective side blocks (20) are fixedly installed between the two mounting vertical plates (3), and a feed opening (21) is provided on the surface of one of the protective side blocks (20).

8. A round tube forming device according to claim 7, characterized in that: A feeding platform (22) is fixedly mounted on the upper surface of the base (1), the upper surface of the feeding platform (22) is flush with the lower edge of the feeding opening (21), and two width limiting strips (23) are fixedly mounted on the upper surface of the feeding platform (22).

Images