Arc bending device

Abstract

The utility model discloses an arc bending device, which comprises a support frame, an upper die and a lower die are arranged on the supporting frame, materials are placed on the lower die, the upper die is controlled to move to the inner side of the lower die, and the materials are bent; the lower die is provided with an adjusting assembly, the gap between the upper die and the adjusting assembly is adjusted when the upper die moves to the inner side of the lower die, and the radian of a bending arc of a material is controlled. According to the device, the adjusting assembly is designed at the lower die, the gap, used for machining, of the lower die can be adjusted, when stamping is conducted through the upper die, the formed gap is adjusted by rotating the handle to adjust the arrangement position of the connecting frame, a metal plate can be clamped and bent according to the size of the set gap, and the metal plate falls into a cavity of the lower die to be stored; and two sides of a circular arc generated by bending have no obvious straight edges.

Description

Technical Field

[0001] The utility model relates to the field of metal plate processing, in particular to an arc bending device. Background Art

[0002] The support frames of steel storage tanks, pressure vessels, towers, etc. in the chemical and pharmaceutical industries are usually connected with the web and the cylinder to form a whole. The web has a vital impact on the safety, durability and stability of steel storage tanks, pressure vessels, towers, etc. The web is generally made by a three-roller rolling machine or die stamping.

[0003] In the existing three-roller rounding machine, the three rollers are placed alternately and staggered to form an arc surface, and the metal sheet is fed in from one side for bending. After being clamped by the rollers, it is bent while being conveyed. However, due to the elasticity of the metal sheet itself and to facilitate transportation, there is a larger opening at the entrance of the sheet, so that after the processed metal sheet is bent, unbent straight edges of about 2-3 cm will remain on both sides, which need to be further cut and removed. When using mold stamping, it is necessary to open matching molds of different specifications according to the specifications of the sheet. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an arc bending device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solution: an arc bending device, comprising:

[0006] Support frame;

[0007] The support frame is provided with an upper die and a lower die, the material is placed on the lower die, the upper die is controlled to move to the inner side of the lower die, and the material is bent;

[0008] The lower die is provided with an adjusting component, and when the upper die is moved to the inner side of the lower die, the gap from the adjusting component is adjusted to control the size of the bending arc of the material.

[0009] As a further description of the above technical solution: the support frame includes an upper support plate and a lower support plate, which separate the support frame into three layers of upper, middle and lower.

[0010] As a further description of the above technical solution: a power assembly is arranged above the upper support plate, an output end of the power assembly passes through the upper support plate and extends downward, and the upper mold is installed at the output end of the power assembly.

[0011] As a further description of the above technical solution: the lower mold is arranged on the lower support plate and is located below the upper mold, and a volume cavity is formed on the inner side of the lower mold.

[0012] As a further description of the above technical solution: the adjusting assembly is arranged on the inner side of the lower mold, and the adjusting assembly includes a plurality of first rollers and a plurality of second rollers, and the first rollers and the second rollers are located at the same horizontal height to form a loading plane.

[0013] As a further description of the above technical solution: the minimum gap between the first roller and the second roller is greater than the width of the upper mold.

[0014] As a further description of the above technical solution: the second rollers are connected via a connecting frame so that the second rollers move simultaneously.

[0015] As a further description of the above technical solution: sliding grooves are opened on the two side end faces of the lower mold, and the rotating shaft of the second roller passes through the connecting frame and extends to the inner side of the sliding groove, and the connecting frame drives the second roller to reciprocate along the setting direction of the sliding groove.

[0016] As a further description of the above technical solution: the lower mold is also provided with a screw, which passes through the connecting frame and extends to the outside and is connected to the handle.

[0017] As a further description of the above technical solution: the lead screw is connected to the connecting frame via threads, and rotating the handle drives the lead screw to rotate, so that the connecting frame reciprocates along the axial direction of the lead screw.

[0018] The above technical solution has the following advantages or beneficial effects:

[0019] 1. By designing an adjustment component at the lower die, the clearance of the lower die for processing can be adjusted. When stamping through the upper die, the gap formed by adjusting the setting position of the connecting frame by turning the handle can be clamped and bent according to the set gap size, and fall into the cavity of the lower die for storage, so that there are no obvious straight edges on both sides of the arc generated by the bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is a schematic structural diagram of the arc bending device proposed by the utility model.

[0021] Legend:

[0022] 1. Support frame; 11. Upper support plate; 12. Lower support plate; 2. Upper die; 3. Lower die; 31. Slide groove; 32. Lead screw; 33. Handle; 4. Power assembly; 41. Output end; 5. First roller; 6. Second roller; 7. Connecting frame. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1 The utility model provides an embodiment: an arc bending device, comprising: a support frame 1; an upper die 2 and a lower die 3 are arranged on the support frame 1, a material is placed on the lower die 3, the upper die 2 is controlled to move to the inner side of the lower die 3, and the material is bent; the lower die 3 is provided with an adjusting component, when the upper die 2 moves to the inner side of the lower die 3, the gap of the adjusting component is adjusted to control the size of the bending arc of the material.

[0025] In this embodiment, an upper mold 2 and a lower mold 3 are arranged on a support frame 1, and the material is placed on a loading plane formed by an adjusting component of the lower mold 4. An upper film 2 of corresponding specifications is selected according to processing requirements, and the upper film is driven by a power component 4 to move downward. The material is squeezed and bent by the gap formed by the adjusting component until the material is pressed down to the inner side of the lower mold 3 for collection, and the bending process is completed. The size of the gap of the adjusting component corresponds to the size of the arc to be processed.

[0026] The support frame 1 includes an upper support plate 11 and a lower support plate 12, which separate the support frame 1 into three layers: upper, middle and lower.

[0027] In this embodiment, the support frame 1 is composed of four square tubes, and the upper support plate 11 and the lower support plate 12 are horizontally arranged on the support frame 1. The lower support plate 12 is at a certain height from the ground, so that the support frame 1 forms a foot for support. The support frame 1 is divided by the upper support plate 11 and the lower support plate 12 to form a multi-layer structure for placing different processing equipment.

[0028] A power assembly 4 is disposed above the upper support plate 11 . An output end 41 of the power assembly 4 penetrates the upper support plate 11 and extends downward. The upper mold 2 is mounted on the output end 41 of the power assembly 4 .

[0029] In this embodiment, the power component 4 is a hydraulic cylinder, the output end 41 is the telescopic rod of the hydraulic cylinder, the power component 4 is connected to the pump station to control the hydraulic circuit, the output end 41 passes through the upper support plate 11, and is connected to the upper mold 2 by a thread. The cross-section of the upper mold 2 is semicircular. According to the processing requirements, the upper mold 2 of different sizes can be selected for replacement for bending processing.

[0030] The lower mold 3 is disposed on the lower support plate 12 and is located below the upper mold 2 . A volume cavity is formed inside the lower mold 3 .

[0031] In this embodiment, the lower die 3 is a rectangular cavity and is located below the upper die 2. During the bending process, the bent materials are collected.

[0032] An adjusting assembly is arranged inside the lower mold 3 , and the adjusting assembly includes a plurality of first rollers 5 and a plurality of second rollers 6 . The first rollers 5 and the second rollers 6 are located at the same horizontal height to form a loading plane.

[0033] In this embodiment, two first rollers 5 and two second rollers 6 are respectively provided, the rotating shaft of the first roller 5 is installed on the inner side of the lower mold 3, and the second roller 6 is arranged through a connecting frame 7, and the distance between the second roller 6 and the first roller 5 can be adjusted. The four rollers are located at the same height to form a loading plane, and the material can be placed on the first roller 5 and the second roller 6.

[0034] The minimum gap between the first roller 5 and the second roller 6 is greater than the width of the upper die 2 , so that the upper die 2 can move below the first roller 5 and the second roller 6 to push the bent material to the inner side of the volume cavity of the lower die 3 .

[0035] The second roller 6 is connected through the connecting frame 7 so that the second roller 6 can move simultaneously; the end faces of both sides of the lower mold 3 are provided with sliding grooves 31, and the rotating shaft of the second roller 6 passes through the connecting frame 7 and extends to the inner side of the sliding groove 31, and the connecting frame 7 drives the second roller 6 to reciprocate along the setting direction of the sliding groove 31.

[0036] In this embodiment, the bending size of the material is adjusted by adjusting the distance between the second roller 6 and the first roller 5. A bearing is arranged on the connecting frame 7. The rotating shaft of the second roller 6 rotates through the bearing connection. The rotating shaft of the second roller 6 passes through the connecting frame 7 and cooperates with the slide groove 31. The slide groove 31 is arranged on the inner side of the lower mold 3 and is parallel to the lower support plate 12. When the connecting frame 7 moves, it drives the second roller 6 to move within the setting range of the slide groove 31, so that when the second roller 6 moves, it remains in the same horizontal plane with the first roller 5, so that the material remains stable during the movement and adjustment process.

[0037] The lower mold 3 is also provided with a screw 32, which passes through the connecting frame 7 and extends to the outside and is connected to the handle 33; the screw 32 is connected to the connecting frame 7 by a thread, and rotating the handle 33 drives the screw 32 to rotate, so that the connecting frame 7 reciprocates along the axial direction of the screw 32.

[0038] In this embodiment, a lead screw 32 is set on the outer side of the lower mold 3 through a bearing and a fixed pin, and the lead screw 32 passes through the connecting frame 7 and cooperates with the connecting frame 7 through a thread. The lead screw 32 is driven to rotate by turning the handle 33. Since a second roller 6 is provided on the connecting frame 7 and cooperates with the slide groove 31, the connecting frame 7 is rotationally limited. When the lead screw 32 rotates, the connecting frame 7 moves along the axial direction of the lead screw 32 under the cooperation of the thread to adjust the setting position of the second roller 6. After the adjustment is completed, the lead screw 32 is rotationally limited by the fixed pin, and the fixed pin can be inserted into the through hole opened on the threaded surface of the lead screw 32 for locking. This method is a prior art and is not described in detail. It can ensure that during the downward pressing process of the upper mold 2, the second roller 6 will not move and change the gap size of the adjustment component.

[0039] Working principle: The pump station controller controls the power assembly 4 to lower the upper die 2 to the horizontal center of the lower die 3. According to the thickness of the processed plate and the bending arc, the gap between the second roller 6 and the upper die 2 is controlled. The handle 33 is shaken to rotate the screw 32 to control the gap between the second roller 6 and the first roller 5. After adjustment, the upper die 2 is raised, and the plate to be bent is placed on the center line of the two sets of rollers. The upper die 2 is lowered until the plate passes through the rollers and falls into the volume cavity of the lower die 3, and the processing is completed. If the thickness of the processed plate is large and not easy to deform, the upper die 2 can be pressed down multiple times. After each pressing, the gap between the second roller 6 and the first roller 5 is adjusted to clamp the material until the bending is completed and the material falls into the inner side of the lower die 3.

[0040] By designing an adjustment component at the lower die 3, the gap of the lower die 3 used for processing can be adjusted. When stamping is performed through the upper die 2, the gap formed by adjusting the setting position of the connecting frame 7 is adjusted by rotating the handle 33. The metal sheet can be clamped and bent according to the set gap size and fall into the cavity of the lower die 3 for storage, so that the straight edge lengths on both sides of the arc produced by the bending are within 1 cm, the bending accuracy is higher, and less waste is generated.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An arc bending device, characterized in that: include: Support frame (1); An upper die (2) and a lower die (3) are provided on the support frame (1); a material is placed on the lower die (3); the upper die (2) is controlled to move to the inner side of the lower die (3) to bend the material; The lower die (3) is provided with an adjustment component, which adjusts the gap between the upper die (2) and the adjustment component when the upper die (2) moves to the inner side of the lower die (3) to control the size of the bending arc of the material.

2. The arc bending device according to claim 1, characterized in that: The support frame (1) comprises an upper support plate (11) and a lower support plate (12), which separate the support frame (1) into three layers: upper, middle and lower.

3. The arc bending device according to claim 2, characterized in that: A power assembly (4) is arranged above the upper support plate (11); an output end (41) of the power assembly (4) passes through the upper support plate (11) and extends downward; and the output end (41) of the power assembly (4) is mounted on the upper mold (2).

4. The arc bending device according to claim 2, characterized in that: The lower mold (3) is arranged on the lower support plate (12) and is located below the upper mold (2), and a volume cavity is formed on the inner side of the lower mold (3).

5. The arc bending device according to claim 1, characterized in that: The adjusting assembly is arranged on the inner side of the lower mold (3), and the adjusting assembly comprises a plurality of first rollers (5) and a plurality of second rollers (6). The first rollers (5) and the second rollers (6) are located at the same horizontal height to form a loading plane.

6. The arc bending device according to claim 5, characterized in that: The minimum gap between the first roller (5) and the second roller (6) is greater than the width of the upper mold (2).

7. The arc bending device according to claim 5, characterized in that: The second rollers (6) are connected via a connecting frame (7) so that the second rollers (6) move simultaneously.

8. The arc bending device according to claim 7, characterized in that: The end surfaces of both sides of the lower mold (3) are provided with sliding grooves (31), and the rotating shaft of the second roller (6) passes through the connecting frame (7) and extends to the inner side of the sliding groove (31), and the connecting frame (7) drives the second roller (6) to move back and forth along the setting direction of the sliding groove (31).

9. The arc bending device according to claim 7, characterized in that: The lower mold (3) is also provided with a lead screw (32), which passes through the connecting frame (7) and extends to the outside and is connected to the handle (33).

10. The arc bending device according to claim 9, characterized in that: The lead screw (32) and the connecting frame (7) are connected via threads, and the lead screw (32) is driven to rotate by rotating the handle (33), so that the connecting frame (7) reciprocates along the axial direction of the lead screw (32).

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