Limiting device of bending machine

Abstract

The utility model provides a bending machine limiting device which comprises a bottom plate fixed above a base, a clamping block and a top plate which are sequentially arranged above the bottom plate, a fixing block is arranged between the bottom plate and the top plate and located on one side of the clamping block, a screw rod is movably connected to the rear end of the fixing block, and a mounting plate used for supporting the screw rod is arranged on the upper surface of the bottom plate. A threaded hole for the screw rod to penetrate through is formed in the mounting plate; one corner of the bottom plate and one corner of the top plate are each provided with an arc plate protruding outwards, a rotating rod is movably connected to the positions, located on the arc plates, of the bottom plate and the top plate through rotating shafts, a main wheel is arranged between the arc plates of the bottom plate and the arc plates of the top plate, and an auxiliary wheel is arranged in the rotating rod and located on one side of the main wheel. During bending work, a workpiece penetrates through the position between the bottom plate and the top plate and is firmly clamped between the fixing block and the clamping block through the movable fixing block, the workpiece can be prevented from hurting an operator, and the bending quality can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bending machines, and in particular relates to a limiting device for a bending machine. Background Art

[0002] Pipes are widely used in production and life, and the requirements for the shape of pipes are different. Many of them require the pipes to be bent. However, the current bending of pipes is generally done by people manually turning the mold to bend the pipes.

[0003] However, existing manual bending machines often do not have a structure for limiting and fixing the pipe. When manually bending the pipe, the unfixed pipe is prone to shaking or bouncing, which can easily affect the bending quality of the pipe and also pose certain safety hazards. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a bending machine limiting device, and the technical solutions adopted are as follows:

[0005] A bending machine limiting device includes a bottom plate fixed above a base, a clamping block and a top plate provided above the bottom plate in sequence, a fixing block provided between the bottom plate and the top plate and located on one side of the clamping block, a screw rod movably connected to the rear end of the fixing block, a mounting plate for supporting the screw rod provided on the upper surface of the bottom plate, and a threaded hole for the screw rod to pass through provided in the mounting plate;

[0006] An outwardly protruding arc plate is provided at a corner of each of the bottom plate and the top plate. A rotating rod is movably connected to the position of the arc plate between the bottom plate and the top plate through a rotating shaft, and a main wheel is provided between the arc plate of the bottom plate and the arc plate of the top plate. An auxiliary wheel is provided in the rotating rod and on one side of the main wheel.

[0007] Furthermore, an arc-shaped groove is formed at one end of the inner side of the clamping block, and the workpiece passes through the arc-shaped groove, and one end passes through between the main wheel and the auxiliary wheel.

[0008] Furthermore, the upper and lower surfaces of the fixed block are both provided with protrusions, and the upper surface of the bottom plate and the lower surface of the top plate are both provided with movable grooves for embedding the protrusions.

[0009] Furthermore, the movable groove is set at an angle of 45 degrees to the workpiece. Under the push of the screw, it can gradually contact the workpiece and combine with the clamping block to limit and fix the workpiece. Since the movable groove is set at an angle, the tension brought by the bending force when the workpiece is bent can make the workpiece fixed more tightly.

[0010] Furthermore, the upper and lower surfaces of the block are both provided with convex columns, and the upper surface of the bottom plate and the lower surface of the top plate are both provided with openings for embedding the convex columns.

[0011] Furthermore, the bottom plate, the clamping block and the top plate are fixedly connected by bolts, which makes it simpler and more convenient to replace and maintain the clamping block and the fixing block when necessary.

[0012] Furthermore, a scale plate is provided above one end of the rotating rod, and a pointer is provided at the upper end of the rotating shaft protruding from the rotating rod. The lower end of the rotating shaft is fixedly connected to the arc plate in the bottom plate, so when the rotating rod rotates, the scale plate rotates with it, while the pointer remains fixed.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] When the utility model is used to bend workpieces such as pipes or steel bars, the workpiece needs to pass between the bottom plate and the top plate, and between the main wheel and the auxiliary wheel in the rotating rod. Therefore, when the workpiece is bent, the workpiece is restricted by the top plate and cannot bounce up, thereby preventing the workpiece from causing harm to the operator and improving safety.

[0015] The utility model provides a movable fixed block between the bottom plate and the top plate. When the screw is rotated, the fixed block can move obliquely, firmly clamping the workpiece between the fixed block and the clamping block, thereby ensuring the firmness of the workpiece during bending and preventing it from shaking or rotating, thereby improving the bending quality of the bending machine, and being suitable for the use of the bending machine to bend the workpiece into any shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the position structure of the screw of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model when the rotating rod rotates 90 degrees;

[0019] Figure 4 This is a schematic diagram of the structure of the utility model when the rotating rod rotates 180 degrees;

[0020] Figure 5 This is a schematic diagram of the position structure of the card block of the utility model;

[0021] Figure 6 This is a schematic diagram of the installation structure of the fixed block of the utility model;

[0022] Figure 7 It is a schematic diagram of the internal structure of the utility model.

[0023] In the picture:

[0024] 1-base, 2-bottom plate, 21-fixed block, 22-moving slot, 23-mounting plate, 24-screw, 3-block, 31-boss, 4-top plate, 5-bolt, 6-rotating rod, 61-rotating shaft, 62-main wheel, 63-auxiliary wheel, 64-dial, 7-workpiece. DETAILED DESCRIPTION

[0025] In order to help those skilled in the art better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0026] As attached Figure 1-7 shown.

[0027] A bending machine limiting device includes a bottom plate 2 fixed above a base 1, a clamping block 3 and a top plate 4 are sequentially provided above the bottom plate 2, and the bottom plate 2, the clamping block 3 and the top plate 4 are fixedly connected by bolts 5, an arc groove is provided at one end of the inner side of the clamping block 3, and a workpiece 7 passes through the arc groove, and a movable fixed block 21 is provided between the bottom plate 2 and the top plate 4 and on one side of the workpiece 7.

[0028] The upper and lower surfaces of the fixed block 21 are provided with protrusions, and the upper surface of the base plate 2 and the lower surface of the top plate 4 are provided with movable grooves 22 for embedding the protrusions. The movable groove 22 is set at a 45-degree angle to the workpiece 7. A screw 24 is movably connected to the rear end of the fixed block 21, and a mounting plate 23 for supporting the screw 24 is provided on the upper surface of the base plate 2. A threaded hole for the screw 24 to pass through is provided in the mounting plate 23. By turning the screw 24, the fixed block 21 can be driven to move along the movable groove 22, thereby limiting and fixing the workpiece 7 passing between the base plate 2 and the top plate 4.

[0029] To facilitate maintenance of the device, the top plate 4, the block 3 and the bottom plate 2 can be separated by unscrewing the bolts 5. After installation, in order to fix the block 3, bosses 31 are provided on the upper and lower surfaces of the block 3, and openings for embedding the bosses 31 are provided on the upper surface of the bottom plate 2 and the lower surface of the top plate 4.

[0030] A curved plate protruding outward is provided at one corner of the bottom plate 2 and the top plate 4. A rotating rod 6 is movably connected to the bottom plate 2 and the top plate 4 at the position of the curved plate through a rotating shaft 61. A main wheel 62 is provided between the curved plate of the bottom plate 2 and the curved plate of the top plate 4. An auxiliary wheel 63 is provided in the rotating rod 6 and on one side of the main wheel 62. Figure 1As shown, with the rotating rod 6 in its original position, one end of the workpiece 7 passes between the main wheel 62 and the auxiliary wheel 63. By rotating the rotating rod 6, the workpiece 7 can be bent. A dial 64 is provided above one end of the rotating rod 6, and a pointer is provided at the upper end of the rotating shaft 61 protruding from the rotating rod 6. The lower end of the rotating shaft 61 is fixedly connected to the arc plate in the bottom plate 2. Therefore, when the rotating rod 6 rotates, the dial 64 rotates accordingly, while the pointer remains fixed. The bending angle of the workpiece 7 can be determined based on the reading of the dial 64. Figure 1 As shown, when the rotating rod 6 is in the original position, the pointer points to the 0 degree position in the scale plate 64.

[0031] When in use, return the rotating rod 6 to its original position, then pass the workpiece 7 between the bottom plate 2 and the top plate 4, and make one end of the workpiece 7 pass through between the main wheel 62 and the auxiliary wheel 63. The position where the workpiece passes through the main wheel 62 and the auxiliary wheel 63 is the bending point; after the workpiece passes through, tighten the screw 24 so that the fixed block 21 and the clamping block 3 on one side tightly clamp the workpiece 7, and finally hold one end of the rotating rod 6 and rotate the rotating rod 6. The bending angle of the workpiece 7 can be observed through the dial 64. After the bending is completed, loosen the screw 24 and take out the workpiece 7.

[0032] The workpiece 7 that can be bent and limited by the device can be a pipe or a steel bar, as long as it can pass through between the bottom plate 2 and the clamping block 3.

[0033] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the scope of protection of the utility model.

Claims

1. A bending machine limiting device, comprising a bottom plate (2) fixed above a base (1), characterized in that: A clamping block (3) and a top plate (4) are sequentially provided above the bottom plate (2); a fixing block (21) is provided between the bottom plate (2) and the top plate (4) and on one side of the clamping block (3); a screw rod (24) is movably connected to the rear end of the fixing block (21); a mounting plate (23) for supporting the screw rod (24) is provided on the upper surface of the bottom plate (2); a threaded hole for the screw rod (24) to pass through is provided in the mounting plate (23); An outwardly protruding arc plate is provided at a corner of each of the bottom plate (2) and the top plate (4); a rotating rod (6) is movably connected to the bottom plate (2) and the top plate (4) at a position of the arc plate via a rotating shaft (61); a main wheel (62) is provided between the arc plate of the bottom plate (2) and the arc plate of the top plate (4); and an auxiliary wheel (63) is provided in the rotating rod (6) and at one side of the main wheel (62).

2. A bending machine limiting device according to claim 1, characterized in that: An arcuate groove is formed at one end of the inner side of the clamping block (3), and the workpiece (7) passes through the arcuate groove, and one end passes out from between the main wheel (62) and the auxiliary wheel (63).

3. A bending machine limiting device according to claim 1, characterized in that: The upper and lower surfaces of the fixed block (21) are both provided with protrusions, and the upper surface of the bottom plate (2) and the lower surface of the top plate (4) are both provided with movable grooves (22) for embedding the protrusions.

4. A bending machine limiting device according to claim 3, characterized in that: The movable groove (22) and the workpiece (7) are arranged at an angle of 45 degrees.

5. A bending machine limiting device according to claim 2, characterized in that: The upper and lower surfaces of the block (3) are both provided with convex columns (31), and the upper surface of the bottom plate (2) and the lower surface of the top plate (4) are both provided with openings for embedding the convex columns (31).

6. A bending machine limiting device according to claim 5, characterized in that: The bottom plate (2), the clamping block (3) and the top plate (4) are fixedly connected by bolts (5).

7. A bending machine limiting device according to claim 1, characterized in that: A scale plate (64) is provided above one end of the rotating rod (6), and a pointer is provided at the upper end of the rotating shaft (61) protruding from the rotating rod (6).

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