Hand-pulled disc shear tool

Abstract

The utility model discloses a hand-pulled disc shear tool which comprises a handheld arm frame, an upper circular cutter is rotationally installed on the handheld arm frame, a material guiding arm frame is installed on the handheld arm frame, a lower circular cutter is rotationally installed on the material guiding arm frame, and the lower circular cutter is matched with the upper circular cutter. The utility model relates to the technical field of circle shears, the transverse position of a mounting rod is adjusted by rotating an internal thread sleeve, under the connection of two supporting rods, the distance between a rotating rod on the supporting rods and a blocking column on the rotating rod and an upper circular cutter and the distance between a blocking column on the rotating rod and a lower circular cutter are changed, and when a metal plate is sheared, one side of the metal plate is in contact with the blocking column; a user pulls the handheld arm frame to drive the material guiding arm frame, the upper circular cutter, the lower circular cutter and the limiting structure to move, a blocking column in the limiting structure moves on the edge of a metal plate, and therefore the blocking column drives a rotating rod to rotate on a supporting rod, the shearing sideline is prevented from being inclined, use is convenient, and meanwhile the shearing machine is suitable for being used in different shearing widths.

Description

Technical Field

[0001] The utility model relates to the technical field of circular shears, in particular to a hand-pull circular shear. Background Art

[0002] Handheld circular shears are mainly used for shearing various metal plates, such as iron plates, stainless steel plates, galvanized plates, copper plates, aluminum plates, etc. In the fields of metal processing, construction, manufacturing, etc. Existing manual circular shears lack the function of mobile guidance, such as a hand-pull circular shear with publication number CN209716598U, which relates to hardware tools and is used to solve the problem of low efficiency of ordinary tools in cutting galvanized steel plates. It includes a handle body, a warped edge portion integrally arranged on the handle body, a first shear disk rotatably connected to the handle body, and a second shear disk rotatably connected to the warped edge portion. The side walls of the first shear disk and the second shear disk abut against each other, and a cutting opening for the galvanized steel plate to enter is formed between the circumferential side walls of the first shear disk and the second shear disk; however, when using the manual circular shears to shear metal plates in a straight line, due to the lack of mobile guidance function, the sheared edge line is easily skewed, which is inconvenient to use.

[0003] There may already be technical means to solve the above problems in the existing technology, but this case intends to provide an alternative or replacement technical solution. Utility Model Content

[0004] In order to solve the problems raised in the background technology, the utility model is implemented through the following technical solutions: a hand-pull circular shears, comprising a handheld arm, an upper circular cutter is rotatably mounted on the handheld arm, a material guide arm is mounted on the handheld arm, a lower circular cutter is rotatably mounted on the material guide arm, the lower circular cutter matches the upper circular cutter, and a limiting structure is mounted on the outer wall of the handheld arm;

[0005] The limiting structure includes a threaded rod, which is installed on the outer wall of the handheld arm, and an internal threaded sleeve is threadedly sleeved on the threaded rod, and one end of the internal threaded sleeve is movably sleeved with a mounting rod, and two support rods are installed on the mounting rod, each of the support rods is movably inserted with a rotating rod, and a blocking column is fixedly sleeved on the rotating rod, and a guide assembly is installed between the mounting rod and the handheld arm.

[0006] Preferably, the guide assembly includes two telescopic rods, both of which are mounted on the outer wall surface of the handheld arm, and the telescopic ends of the two telescopic rods are mounted on the mounting rod.

[0007] Preferably, a bearing is installed between the internally threaded sleeve and the mounting rod.

[0008] Preferably, the cross-sections of the two support rods are both rectangular structures.

[0009] Preferably, two anti-slip columns are fixedly mounted on the rotating rod, and the two anti-slip columns are movably fitted on the upper and lower wall surfaces of the support rod respectively.

[0010] Preferably, the two support rods are respectively located on both sides of the upper circular cutter.

[0011] Beneficial effects

[0012] The utility model provides a hand-pull circular shear, which has the following beneficial effects compared with the existing technology: by rotating the internal threaded sleeve to adjust the lateral position of the mounting rod, under the connection of the two support rods, the distance between the rotating rod on the support rod and the stop column on the rotating rod and the upper circular tool and the lower circular tool can be changed. When shearing metal plates, one side of the metal plate is contacted with the stop column, and the user pulls the handheld arm to drive the guide arm, the upper circular tool, the lower circular tool and the limiting structure to move. The stop column in the limiting structure moves along the edge of the metal plate, and the stop column drives the rotating rod to rotate on the support rod to prevent the cut edge line from being skewed. It is easy to use and suitable for use with different shearing widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure is a three-dimensional structural diagram of a hand-pull circular shears according to the utility model from a top view angle.

[0014] Figure 2 The utility model is a three-dimensional structural schematic diagram of a hand-pull circular shears at an upward viewing angle.

[0015] Figure 3 This is a schematic diagram of the top and cross-sectional structure of a hand-pulled circular shears of the present utility model.

[0016] In the figure: 1. Handheld arm, 2. Upper circular cutter, 3. Material guide arm, 4. Lower circular cutter, 5. Threaded rod, 6. Internally threaded sleeve, 7. Mounting rod, 8. Support rod, 9. Rotating rod, 10. Stop column, 11. Telescopic rod, 12. Bearing, 13. Anti-slip column. DETAILED DESCRIPTION

[0017] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0018] Example: See Figure 1-3 In order to solve the problem that when using manual circular shears to cut metal plates in a straight line, the shearing edges are easily skewed and inconvenient to use due to the lack of a moving guide function, this technical solution is designed. The detailed technical solution is as follows;

[0019] A hand-pull circular shears, comprising a handheld arm 1, an upper circular cutter 2 being rotatably mounted on the handheld arm 1, a material guide arm 3 being mounted on the handheld arm 1, a lower circular cutter 4 being rotatably mounted on the material guide arm 3, the lower circular cutter 4 being matched with the upper circular cutter 2, and a limiting structure being mounted on the outer wall of the handheld arm 1;

[0020] It should be noted that the installation method and working principle of the handheld arm 1, the upper circular cutter 2, the guide arm 3 and the lower circular cutter 4 can refer to a hand-pulled circular shear with publication number CN209716598U;

[0021] Specifically, the limiting structure includes a threaded rod 5, which is mounted on the outer wall of the handheld arm frame 1. An internally threaded sleeve 6 is threadedly sleeved on the threaded rod 5. One end of the internally threaded sleeve 6 is movably sleeved with a mounting rod 7. Two support rods 8 are mounted on the mounting rod 7. Each support rod 8 is movably inserted with a rotating rod 9. A stop column 10 is fixedly sleeved on the rotating rod 9. A guide assembly is installed between the mounting rod 7 and the handheld arm frame 1.

[0022] Specifically, the guide assembly includes two telescopic rods 11, both of which are mounted on the outer wall of the handheld arm 1, and the telescopic ends of the two telescopic rods 11 are mounted on the mounting rod 7;

[0023] It should be noted that by rotating the internal threaded sleeve 6, the internal threaded sleeve 6 rotates on the mounting rod 7, and the mounting rod 7 does not rotate under the guide limit of the two telescopic rods 11. Therefore, the internal threaded sleeve 6 rotates on the threaded rod 5 and moves laterally, so that the length of the two telescopic rods 11 is changed. Under the connection of the two support rods 8, the rotating rod 9 on the support rod 8 and the blocking column 10 on the rotating rod 9 and the upper circular cutter 2 and the lower circular cutter 4 can be changed. When shearing metal sheets, one side of the metal sheet contacts the blocking column 10, and the user pulls the handheld arm 1 to drive the guide arm 3, the upper circular cutter 2, the lower circular cutter 4 and the limiting structure to move. The blocking column 10 in the limiting structure moves along the edge of the metal sheet, and the blocking column 10 therefore drives the rotating rod 9 to rotate on the support rod 8 to prevent the sheared edge line from being skewed. It is easy to use and suitable for use with different shearing widths.

[0024] As a preference, further, a bearing 12 is installed between the internally threaded sleeve 6 and the mounting rod 7 to assist the internally threaded sleeve 6 in rotating between the mounting rods 7;

[0025] As a preference, further, the cross-sectional shapes of the two support rods 8 are both rectangular structures;

[0026] As a preferred embodiment, further, two anti-detachment columns 13 are fixedly mounted on the rotating rod 9, and the two anti-detachment columns 13 are respectively movably fitted on the upper and lower wall surfaces of the support rod 8 to prevent the rotating rod 9 from falling off the support rod 8;

[0027] As a preferred embodiment, further, two support rods 8 are respectively located on both sides of the upper circular cutter 2 to avoid maintenance space of the upper circular cutter 2, making it easier for users to maintain the upper circular cutter 2.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hand-pull circular shears, comprising a handheld arm (1), an upper circular cutter (2) being rotatably mounted on the handheld arm (1), a material guide arm (3) being mounted on the handheld arm (1), a lower circular cutter (4) being rotatably mounted on the material guide arm (3), the lower circular cutter (4) and the upper circular cutter (2) being matched with each other, characterized in that: A limiting structure is installed on the outer wall surface of the handheld arm support (1); The limiting structure comprises a threaded rod (5), the threaded rod (5) being mounted on the outer wall of the handheld arm frame (1), an internal threaded sleeve (6) being threadedly sleeved on the threaded rod (5), one end of the internal threaded sleeve (6) being movably sleeved on a mounting rod (7), two support rods (8) being mounted on the mounting rod (7), each of the support rods (8) being movably inserted with a rotating rod (9), a blocking column (10) being fixedly sleeved on the rotating rod (9), and a guide assembly being mounted between the mounting rod (7) and the handheld arm frame (1).

2. A hand-pulled circular shear according to claim 1, characterized in that: The guide assembly comprises two telescopic rods (11), both of which are mounted on the outer wall surface of the handheld arm frame (1), and the telescopic ends of the two telescopic rods (11) are mounted on the mounting rod (7).

3. A hand-pulled circular shear according to claim 1, characterized in that: A bearing (12) is installed between the internal threaded sleeve (6) and the mounting rod (7).

4. A hand-pulled circular shear according to claim 1, characterized in that: The cross-sectional shapes of the two support rods (8) are both rectangular structures.

5. A hand-pulled circular shear according to claim 4, characterized in that: Two anti-slip columns (13) are fixedly mounted on the rotating rod (9), and the two anti-slip columns (13) are movably fitted on the upper and lower wall surfaces of the support rod (8).

6. A hand-pulled circular shear according to claim 1, characterized in that: The two support rods (8) are respectively located on both sides of the upper circular cutter (2).

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