Small hoop bending machine capable of adjusting hoop bending angle

Abstract

The utility model discloses a small-sized hoop bending machine capable of adjusting a hoop bending angle, which comprises a hoop bending machine body, a rotating disc arranged at the top of the hoop bending machine body and a positioning component, the positioning component comprises a center pin arranged in the middle of the top of the rotating disc, and a bending pin is connected to the edge side of the top of the rotating disc in a penetrating manner; a fixing part is arranged at the top of the hoop bending machine body; the reducing assembly comprises an expanding sleeve arranged on the outer side of the center pin, a locking part is arranged at the top of the center pin, the locking part comprises movable rods symmetrically connected to the outer side of the center pin in a penetrating and inserting mode, an extrusion piece is arranged at the top of the center pin, and a rebound piece is arranged on the outer side of each movable rod; the extrusion piece drives the movable rod to penetrate through the inner wall of the expanding sleeve, the springback piece drives the movable rod to be unlocked and reset, the expanding sleeves with different diameters can be locked through the design, and the situation that the expanding sleeves are subjected to friction extrusion of steel bars, motion in the vertical direction is generated, and the hoop bending operation of the hoop bending machine is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the field of hoop bending machines, and particularly relates to a small-sized hoop bending machine with adjustable hoop bending angle. Background Art

[0002] A hoop bending machine is a device with high flexibility and precision, widely used in various construction and engineering projects. It can adjust the bending angle of steel bars according to the engineering requirements. The steel bar hoop bending machine includes a machine case, a mandrel, and a working disc. The mandrel is located inside the machine case, one end of which is connected to the working disc. A center pin is provided at the center position of the upper surface of the working disc for fixing the steel bar, and a bending pin is provided at the edge of the upper surface of the working disc for controlling the bending shape of the steel bar. A resisting block is provided on the upper surface of the machine case on one side of the bending pin to provide support and limit the movement range of the steel bar. When changing the bending angle of the steel bar, an expanding diameter sleeve needs to be sleeved outside the center pin to adjust the distance between the center pin and the bending pin, thereby changing the bending radius during the bending process of the steel bar. The existing expanding diameter sleeve is directly sleeved outside the center pin without any limiting measures. When the steel bar is extruded by the expanding diameter sleeve, the friction and extrusion between the surface of the steel bar and the surface of the expanding diameter sleeve drive the expanding diameter sleeve to generate vertical movement, which easily leads to the problem of the expanding diameter sleeve shaking and falling off, affecting the hoop bending operation of the hoop bending machine. Therefore, to solve this problem, a new type of small-sized hoop bending machine with adjustable hoop bending angle is needed. Content of the Utility Model

[0003] The purpose of the utility model is to provide a small-sized hoop bending machine with adjustable hoop bending angle to solve the problems put forward in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A small-sized hoop bending machine with adjustable hoop bending angle, including a hoop bending machine body, a rotating disc is arranged at the top of the hoop bending machine body, and further includes:

[0005] A positioning component for positioning and fixing the steel bar. The positioning component includes a center pin arranged in the middle of the top of the rotating disc, a bending pin is inserted and connected to the side of the top of the rotating disc, and a fixing part for limiting the steel bar is arranged at the top of the hoop bending machine body;

[0006] A variable diameter component, which includes an expanding diameter sleeve arranged outside the center pin. A locking part for fixing the expanding diameter sleeve is arranged at the top of the center pin. The locking part includes movable rods symmetrically inserted and connected outside the center pin. An extrusion part for pushing the movable rods to penetrate and lock the expanding diameter sleeve is arranged at the top of the center pin, and a resilient member for resetting the movable rods is arranged outside the movable rods.

[0007] Preferably, the resilient member includes a sleeve sleeved outside the movable rod, a compression spring is sleeved inside the sleeve on the outside of the movable rod, and a pressing block for receiving the push of the pressing member is provided at the end of the movable rod.

[0008] Preferably, the pressing member includes an adjusting bolt threadedly inserted into the top of the central pin, and a moving block for pushing the pressing block to move is provided at the bottom of the adjusting bolt.

[0009] Preferably, an activity groove for the moving block to move is formed at the insertion part of the adjusting bolt and the central pin, and the moving block is arranged inside the activity groove.

[0010] Preferably, an annular locking groove for the movable rod to penetrate is formed on the inner wall of the diameter-expanding sleeve.

[0011] Preferably, the fixing part includes a fixing strip arranged on the top of the hoop bender body, and a resisting pin for limiting the steel bar is inserted through the top of the fixing strip.

[0012] Preferably, a calibration block is arranged on the top of the hoop bender body, a screw rod is threadedly inserted through the side of the calibration block, and an auxiliary strip for supporting the bending of the steel bar is fixedly connected to the end of the screw rod.

[0013] The technical effects and advantages of the present utility model:

[0014] In the present utility model, a locking part is arranged at the insertion part of the central pin and the diameter-expanding sleeve. By using the pressing member in the locking part to drive the movable rod to penetrate the inner wall of the diameter-expanding sleeve, the resilient member outside the movable rod is used to drive the unlocking and resetting of the movable rod. This design can lock different-diameter diameter-expanding sleeves while changing the bending angle radius of the steel bar by replacing the diameter-expanding sleeve, and avoid the vertical movement of the diameter-expanding sleeve caused by the frictional extrusion of the steel bar during the extrusion and bending of the steel bar, thereby affecting the hoop bending operation of the hoop bender. Description of the drawings

[0015] Figure 1 It is a schematic structural diagram of the whole of the present utility model.

[0016] Figure 2 It is a cross-sectional view of the diameter-changing assembly of the present utility model.

[0017] Figure 3 It is a schematic structural diagram of the diameter-expanding sleeve of the present utility model.

[0018] Figure 4 It is a schematic structural diagram of the central pin of the present utility model.

[0019] In the figure: 1. Bending hoop machine body; 2. Rotating disk; 201. Central pin; 2011. Movable groove; 202. Bending pin; 3. Diameter-expanding sleeve; 301. Annular locking groove; 4. Locking part; 401. Adjusting bolt; 402. Movable rod; 403. Sleeve; 404. Moving block; 405. Pressing block; 406. Compression spring; 5. Auxiliary strip; 6. Screw rod; 7. Calibration block; 8. Fixed strip; 801. Blocking pin. Detailed implementation manner

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0021] The present invention provides a Figures 1-4 small bending hoop machine with adjustable bending hoop angle as shown, including a bending hoop machine body 1. A rotating disk 2 is arranged at the top of the bending hoop machine body 1, and further includes a positioning component and a diameter-changing component;

[0022] It should be noted that the overall reference model of the bending hoop machine body 1 and the rotating disk 2 is the working principle of a GW-40 bending machine. A calibration block 7 is welded to the top of the bending hoop machine body 1. A screw rod 6 is threadedly inserted through the side of the calibration block 7. An auxiliary strip 5 for supporting the bending of steel bars is fixedly connected to the end of the screw rod 6. The insertion part of the auxiliary strip 5 and the calibration block 7 is fixed by screws. First, rotate the screw rod 6 to the required position, and then install the auxiliary strip 5 to support the steel bars;

[0023] Specifically, the positioning component is used for positioning and fixing the steel bars. The positioning component includes a central pin 201 arranged in the middle of the top of the rotating disk 2. A bending pin 202 is inserted through the side of the top of the rotating disk 2. A fixing part for limiting the steel bars is arranged at the top of the bending hoop machine body 1;

[0024] It should be noted that the fixing part includes a fixed strip 8 arranged at the top of the bending hoop machine body 1. A blocking pin 801 for limiting the steel bars is inserted through the top of the fixed strip 8. The fixed strip 8 is welded to the top of the bending hoop machine body 1. A cylindrical hole for directly inserting the blocking pin 801 is opened at the top of the fixed strip 8. A cylindrical hole for directly inserting the bending pin 202 is opened at the top of the rotating disk 2;

[0025] Specifically, the diameter-changing component includes a diameter-expanding sleeve 3 arranged outside the central pin 201. A locking part 4 for fixing the diameter-expanding sleeve 3 is arranged at the top of the central pin 201. The locking part 4 includes movable rods 402 symmetrically inserted through the outside of the central pin 201;

[0026] A pressing member for pushing the movable rod 402 to penetrate and lock the expanded diameter sleeve 3 is provided at the top of the central pin 201, and a resilient member for resetting the movable rod 402 is provided on the outer side of the movable rod 402;

[0027] Specifically, the resilient member includes a sleeve 403 sleeved on the outer side of the movable rod 402. A compression spring 406 is sleeved on the outer side of the movable rod 402 and inside the sleeve 403. A pressing block 405 for bearing the push of the pressing member is provided at the end of the movable rod 402;

[0028] It should be noted that a cylindrical hole for the sleeve 403 to penetrate is provided on the side of the central pin 201. The outer side of the sleeve 403 is fixedly bonded to the inner wall of the cylindrical hole with glue. The pressing block 405 can move through the inner wall of the sleeve 403, and the shape of the pressing block 405 is a spherical protrusion;

[0029] Specifically, the pressing member includes an adjusting bolt 401 threadedly inserted and connected to the top of the central pin 201. A moving block 404 for pushing the pressing block 405 to move is provided at the bottom of the adjusting bolt 401;

[0030] It should be noted that a threaded hole for the adjusting bolt 401 to penetrate is provided at the top of the central pin 201. An activity groove 2011 for the moving block 404 to move is provided at the penetration of the adjusting bolt 401 and the central pin 201. The moving block 404 is arranged inside the activity groove 2011. The threaded hole is communicated with the activity groove 2011. The shape of the moving block 404 is frustum-shaped. The rotating adjusting bolt 401 squeezes the pressing block 405 by the movement of the moving block 404. An annular locking groove 301 for the movable rod 402 to penetrate is provided on the inner wall of the expanded diameter sleeve 3;

[0031] During actual use, a locking portion 4 is provided at the penetration of the central pin 201 and the expanded diameter sleeve 3. The pressing member in the locking portion 4 drives the movable rod 402 to penetrate the inner wall of the expanded diameter sleeve 3. After losing the extrusion of the moving block 404, the compression spring 406 in the resilient member drives the reset retraction of the movable rod 402, disengaging from the annular locking groove 301. This design can lock expanded diameter sleeves 3 with different diameters while changing the bending angle radius of the steel bar by replacing the expanded diameter sleeve 3, avoiding the problem that during the extrusion and bending of the steel bar, the expanded diameter sleeve 3 is subjected to frictional extrusion by the steel bar and generates vertical movement, resulting in the shaking and falling off of the expanded diameter sleeve 3, which affects the hoop bending operation of the hoop bender.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A small hoop bending machine with adjustable hoop bending angle, comprising a hoop bending machine body (1), a rotating disk (2) being arranged on the top of the hoop bending machine body (1), characterized in that: Also includes: A positioning assembly, the positioning assembly is used for positioning and fixing the steel bars, the positioning assembly comprises a center pin (201) arranged at the middle of the top of the rotating disk (2), a bending pin (202) is inserted and connected to the top side of the rotating disk (2), and a fixing portion for limiting the position of the steel bars is arranged at the top of the hoop bending machine body (1); A reducing assembly, the reducing assembly comprising an expanding sleeve (3) arranged on the outside of a center pin (201), a locking portion (4) for fixing the expanding sleeve (3) being arranged at the top of the center pin (201), the locking portion (4) comprising a movable rod (402) symmetrically inserted and connected to the outside of the center pin (201), an extrusion piece for pushing the movable rod (402) to insert and lock the expanding sleeve (3) being arranged at the top of the center pin (201), and a rebound piece for resetting the movable rod (402) being arranged at the outside of the movable rod (402).

2. A small hoop bending machine with adjustable hoop bending angle according to claim 1, characterized in that: The resilient member comprises a sleeve (403) sleeved on the outside of the movable rod (402), a compression spring (406) sleeved on the outside of the movable rod (402) and inside the sleeve (403), and a pressure block (405) for bearing the push of the extrusion member is provided at the end of the movable rod (402).

3. A small hoop bending machine with adjustable hoop bending angle according to claim 2, characterized in that: The extrusion member comprises an adjusting bolt (401) threadedly inserted and connected to the top of the center pin (201), and a moving block (404) for pushing the pressing block (405) to move is arranged at the bottom of the adjusting bolt (401).

4. A small hoop bending machine with adjustable hoop bending angle according to claim 3, characterized in that: A movable groove (2011) for the movable block (404) to move is provided at the interlaced portion between the adjusting bolt (401) and the center pin (201), and the movable block (404) is arranged inside the movable groove (2011).

5. A small hoop bending machine with adjustable hoop bending angle according to claim 2, characterized in that: The inner wall of the diameter-expanding sleeve (3) is provided with an annular locking groove (301) for the movable rod (402) to penetrate.

6. A small hoop bending machine with adjustable hoop bending angle according to claim 1, characterized in that: The fixing portion comprises a fixing bar (8) arranged on the top of the hoop bending machine body (1), and a stop pin (801) for limiting the position of the steel bars is inserted and connected to the top of the fixing bar (8).

7. A small hoop bending machine with adjustable hoop bending angle according to claim 6, characterized in that: A correction block (7) is arranged on the top of the hoop bending machine body (1), a screw rod (6) is inserted and connected to the side thread of the correction block (7), and an auxiliary bar (5) for supporting the bending of steel bars is fixedly connected to the end of the screw rod (6).

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