Novel small-diameter fillet steel plate bending device

Abstract

The utility model relates to a novel small-diameter fillet steel plate bending device. In order to overcome the defects in the prior art, the novel small-diameter fillet steel plate bending device comprises a base and a hand push rod, one end of the hand push rod is rotatably fixed to the base through a rotating shaft perpendicular to the base, two L-shaped right-angle steel plates are welded to the portion, on one side of the rotating shaft, of the upper surface of the base, and the two L-shaped right-angle steel plates are arranged in a back-to-back mode. Each L-shaped right-angle steel plate comprises a parallel vertical plate and a transverse vertical plate, a vertical crack is formed between the two parallel vertical plates, a steel plate to be machined is placed in the vertical crack, a short rod is welded to the middle section of the hand push rod and can be pressed on the steel plate to be machined, and the outer edge, away from the rotating shaft, of the parallel vertical plate is in a semi-cylindrical shape. A plurality of indication lines are arranged on the upper surface of the base, and the indication lines are tangent to the projection of the outer edge on the upper surface of the base and form different angles with the projection of the outer edge on the upper surface of the base. The novel small-diameter fillet steel plate bending device is simple in structure, convenient to use and suitable for machining small workpieces such as clamping plates for fixing cables.

Description

Technical Field

[0001] The utility model relates to a new type of small-diameter rounded steel plate bender. Background Art

[0002] During daily work, it is often necessary to bend steel plates to make cable racks for fixing rubber-sheathed cable clamps or racks for fixing number plates. Previously, when manufacturing these workpieces, the steel plate to be processed was clamped in a bench vice and hammered into shape with a fitter's hammer. During the hammering process, due to the difficulty in controlling the force and direction, the accuracy of the workpiece would have errors, resulting in the workpiece not meeting the work requirements.

[0003] The Chinese utility model patent application with the authorization announcement on April 9, 2021 and the announcement number CN212917169U discloses a color steel plate bender that is easy to disassemble and assemble.

[0004] The Chinese utility model patent application with the authorization announcement on May 25, 2021 and the announcement number CN213256411U discloses a stainless steel plate bending device.

[0005] The Chinese utility model patent application with the authorization announcement on October 29, 2021 and the announcement number CN214516899U discloses a small-sized manual steel plate bending tool. The above three types of steel plates are driven by a motor or manually to rotate the steel plate to be bent around a shaft (or a fixed rod) to achieve steel plate bending. When bending, the shaft (or the fixed rod) is subjected to a large force and its diameter should not be too small, and the rounded corner diameter at the bent part of the processed steel plate will not be smaller than the diameter of the shaft (or the fixed rod). The above benders cannot process bent steel plates with small rounded corners.

[0006] The Chinese utility model patent application with the authorization announcement on December 29, 2023 and the announcement number CN220259176U discloses a rapid bending instrument for component steel plates. The rapid bending instrument for component steel plates uses a bending electric cylinder to drive a pressing block to press the steel plate to be processed on two bottom supporting rollers below it to achieve steel plate bending. The rapid bending instrument for component steel plates has a complex structure, a large volume, a large weight, and cannot process bent steel plates with small rounded corners.

[0007] The Chinese invention patent application with the publication on February 2, 2024 and the publication number CN 117483497 A discloses a galvanized steel plate bending device. The bending die of the device is provided with a V-shaped groove, and a bending head is arranged above the V-shaped groove. When in use, the steel plate is placed on the bending die, and then the steel plate is pressed into the V-shaped groove of the bending die with the bending head to achieve steel plate bending. The device has a complex structure, a large volume, and its V-shaped groove has a fixed shape, and can only bend steel plates with one included angle, with a narrow adaptation range. Summary of the Invention

[0008] The technical problem to be solved by the present utility model is to overcome the above-mentioned defects of the prior art and provide a new type of small-diameter rounded steel plate bender with a small volume, light weight, and capable of bending a steel plate at any angle within the range of 50° - 160°.

[0009] To solve the above technical problem, the new type of small-diameter rounded steel plate bender includes a base and a hand push rod. One end of the hand push rod is rotatably fixed on the base through a rotating shaft perpendicular to the base. Its characteristics are as follows: On the upper surface of the base on one side of the rotating shaft, two L-shaped right-angled steel plates are welded. The two L-shaped right-angled steel plates are arranged back to back. Each L-shaped right-angled steel plate includes a parallel vertical plate and a horizontal and vertical plate. A vertical gap is formed between the two parallel vertical plates. The steel plate to be processed is placed in this vertical gap. The horizontal and vertical plates of the two L-shaped right-angled steel plates are both located outside the same end of the vertical gap and are connected to the inner edge of the parallel vertical plate of the same L-shaped right-angled steel plate. The lower edge of the hand push rod is higher than the upper edges of the two L-shaped right-angled steel plates and can rotate around the axis of the rotating shaft above the L-shaped right-angled steel plate. A short rod is welded in the middle section of the hand push rod, and this short rod can press on the part of the steel plate to be processed that is being bent. The outer edge of the parallel vertical plate far from the rotating shaft is semi-cylindrical. Multiple indicating lines are provided on the upper surface of the base. The above-mentioned indicating lines are tangent to the projection of this outer edge on the upper surface of the base and form different angles with the inner surface of the adjacent parallel vertical plate. Designed in this way, the L-shaped right-angled steel plate can be directly cut from an angle steel profile with a side thickness of 3 mm. In this way, the diameter of the arc surface inside the included angle of the bent steel plate is 3 mm, so as to obtain a bent steel plate with a small-diameter rounded angle at the included angle, which is suitable for processing small workpieces such as clamps for fixing cables.

[0010] As an optimization, a limit nut is also welded on the upper surface of the base. An adjusting screw is screwed on this limit nut, and the front end of this adjusting screw points to the part of the steel plate to be processed that is being bent in the vertical gap. Designed in this way, rotate the adjusting screw so that the projection of the front end of the adjusting screw on the base abuts against the corresponding position between the corresponding indicating lines or indicating lines. Then place the steel plate to be processed in the vertical gap. Then, make the short rod located outside the forward extension part of the steel plate to be processed. Then pull the hand push rod, and the short rod pushes the forward extension part of the steel plate to be processed to bend around the outer edge of the parallel vertical plate until the part of the steel plate to be processed that is being bent abuts against the front end of the adjusting screw.

[0011] The new type of small-diameter rounded steel plate bender has a simple structure and is convenient to use, and is suitable for processing small workpieces such as clamps for fixing cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following further describes the new type of small-diameter rounded steel plate bender in conjunction with the drawings:

[0013] Figure 1 is a three-dimensional structural schematic diagram of the new type of small-diameter rounded steel plate bender;

[0014] Figure 2 This is a three-dimensional structural schematic diagram of the use state of the new small-diameter rounded steel plate bender.

[0015] In the figure: 1 is the base, 2 is the hand push rod, 3 is the rotating shaft, 4 is the L-shaped right-angle steel plate, 41 is the parallel vertical plate, 42 is the horizontal and vertical plate, 43 is the outer edge, 5 is the vertical slit, 6 is the steel plate to be processed, 7 is the short rod, 8 is the indicating line, 9 is the limit nut, and 10 is the adjusting screw. Specific implementation mode

[0016] Implementation mode 1: As Figure 1-2 shown, the new small-diameter rounded steel plate bender includes a base 1 and a hand push rod 2. One end of the hand push rod 2 is rotatably fixed on the base 1 through a rotating shaft 3 perpendicular to the base 1. Its characteristics are as follows: On the upper surface of the base 1 on one side of the rotating shaft 3, two L-shaped right-angle steel plates 4 are welded. The two L-shaped right-angle steel plates 4 are arranged back to back. Each L-shaped right-angle steel plate 4 includes a parallel vertical plate 41 and a horizontal and vertical plate 42. A vertical slit 5 is formed between the two parallel vertical plates 41. The steel plate 6 to be processed is placed in the vertical slit 5. The horizontal and vertical plates 42 of the two L-shaped right-angle steel plates 4 are both located outside the same end of the vertical slit 5 and are connected to the inner edge of the parallel vertical plate 41 of the same L-shaped right-angle steel plate 4. The lower edge of the hand push rod 2 is higher than the upper edges of the two L-shaped right-angle steel plates 4 and can rotate around the axis of the rotating shaft 3 to the upper part of the L-shaped right-angle steel plate 4. A short rod 7 is welded in the middle section of the hand push rod 2. This short rod can press on the bent part of the steel plate 6 to be processed. The outer edge 43 of the parallel vertical plate 41 far from the rotating shaft 3 is semi-cylindrical. Multiple indicating lines 8 are provided on the upper surface of the base. The above-mentioned indicating lines 8 are tangent to the projection of the outer edge 43 on the upper surface of the base 1 and form different angles with the inner surface of the adjacent parallel vertical plate 4.

[0017] A limit nut 9 is also welded on the upper surface of the base 1. An adjusting screw 10 is screwed on the limit nut 9. The front end of the adjusting screw 10 points to the bent part of the steel plate 6 to be processed in the vertical slit 4, so as to limit the bending angle.

Claims

1. A new type of small-diameter rounded steel plate bender, comprising a base and a hand push rod. One end of the hand push rod is rotatably fixed on the base through a rotating shaft perpendicular to the base, and is characterized in that: On the upper surface of the base on one side of the rotating shaft, two L-shaped right-angled steel plates are welded. The two L-shaped right-angled steel plates are arranged back to back. Each L-shaped right-angled steel plate includes a parallel vertical plate and a horizontal and vertical plate. A vertical gap is formed between the two parallel vertical plates. The steel plate to be processed is placed in this vertical gap. The horizontal and vertical plates of the two L-shaped right-angled steel plates are located outside the same end of the vertical gap and are connected to the inner edges of the parallel vertical plates of the same L-shaped right-angled steel plate. The lower edge of the hand push rod is higher than the upper edges of the two L-shaped right-angled steel plates and can rotate above the L-shaped right-angled steel plates around the axis of the rotating shaft. A short rod is welded in the middle of the hand push rod, and this short rod can press on the bent part of the steel plate to be processed. The outer edge of the parallel vertical plate far from the rotating shaft is semi-cylindrical. Multiple indicating lines are provided on the upper surface of the base. The above-mentioned indicating lines are tangent to the projection of the outer edge on the upper surface of the base and form different angles with the inner surfaces of the adjacent parallel vertical plates.

2. The novel small-diameter rounded corner steel plate bender according to claim 1, characterized in that: A limit nut is also welded on the upper surface of the base. An adjusting screw is screwed on the limit nut, and the front end of the adjusting screw points to the bent part of the steel plate to be processed in the vertical gap.

Images