A steel bar cutting device for the production of electric sofa beds

Abstract

This invention relates to the field of metal pressure processing equipment technology, and discloses a steel bar cutting device for electric sofa bed production, including a large base plate, a vertical plate, a motor, a rotary wheel compression mechanism, a force-increasing mechanism, and a variable-diameter clamping mechanism. It achieves rapid adaptive clamping of steel bars of different diameters. The central rotary wheel can be driven to rotate simply by turning the screw, and the large rotating plate is precisely controlled to retract and extend synchronously through a limit frame, ensuring that the clamping wheel always grips the steel bar evenly from the radial direction. This eliminates the eccentricity problem caused by unilateral clamping. The uniform clamping in the entire circumference effectively ensures the stability of the steel bar during cutting, avoiding uneven cutting surfaces and abnormal wear of the cutting blade caused by slippage. This significantly improves the safety and reliability of the equipment. The fully mechanical adjustment method overcomes the cumbersome process of repeatedly loosening bolts for manual alignment and re-tightening required by traditional baffle positioning, greatly improving the switching efficiency of steel bars of different specifications. It is suitable for the processing needs of high-strength steel bars in multiple specifications and small batches in the furniture manufacturing industry.

Description

Technical Field

[0001] This invention relates to the field of metal pressure processing equipment technology, and more specifically to a steel bar cutting device for the production of electric sofa beds. Background Technology

[0002] Ordinary mechanical cutting machines are common equipment in steel bar processing. Their core feature is that they convert the rotational motion of an electric motor into the linear shearing motion of a blade through purely mechanical transmission, such as gears, crankshafts, and levers. The high-speed rotation of the electric motor is transmitted through a belt and gear system, ultimately driving a crankshaft or eccentric wheel. The rotational motion of the crankshaft is then converted into the reciprocating linear motion of the moving blade through a connecting rod, thereby achieving the shearing process.

[0003] The power enhancement systems of existing rebar cutters generally rely on hydraulic transmission, which poses a risk of hydraulic oil leakage, increases the cost of regular replacement and sealing maintenance, has low energy conversion efficiency, and is prone to problems such as oil temperature rise and performance degradation during continuous high-load operation, resulting in unstable output force.

[0004] In terms of clamping and positioning, traditional equipment mostly uses baffles or clamps. The adjustment process is cumbersome and time-consuming, requiring manual repeated movement of the baffle and re-fixing. Not only is the positioning accuracy greatly affected by human factors, but it is also difficult to quickly adapt to the alternating production needs of multiple specifications of steel bars. Furthermore, the clamp structure has poor adaptability to steel bars of different diameters. Uneven clamping force can cause the steel bars to slip or the end face to be crushed during cutting. In particular, the clamping effect on high-strength threaded steel bars is not ideal, affecting the cutting quality and efficiency. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a steel bar cutting device for the production of electric sofa beds, so as to solve the problems existing in the background art.

[0006] The present invention provides the following technical solution: a steel bar cutting device for the production of electric sofa beds, comprising a base plate, a vertical plate and a motor. The vertical plate is fixedly connected to the top center of the base plate, and the motor is fixedly connected to the front end of the vertical plate near the top. A rotary compression mechanism is fixedly connected to the front end of the vertical plate and the bottom of the motor. A force-increasing mechanism is fixedly connected to the front end of the vertical plate and one side of the rotary compression mechanism. An auxiliary plate is fixedly connected to the front end of the vertical plate near the bottom and the top of the base plate. A diameter-changing clamping mechanism is fixedly connected to the top of the base plate and the two sides of the vertical plate near the auxiliary plate.

[0007] Furthermore, the device operates by starting a motor, which drives a rotary compression mechanism to convert rotation into vertical displacement. The vertical force is then amplified by a force amplification mechanism, thereby cutting the steel bar that has been fixed by the variable diameter clamping mechanism.

[0008] Furthermore, the rotary compression mechanism includes a fixed frame fixed to the bottom of the motor and the front end of the upright plate near the top. A gear block is fixedly connected to the bottom of the motor and the inner side of the fixed frame. A gear base plate is fixedly connected to the bottom of the gear block. A rotating shaft is fixedly connected to the bottom of the gear base plate. A first fixed long plate is fixedly connected to the bottom of the gear base plate and the front end of the upright plate. A gear rotating mechanism is fixedly connected to the bottom of the first fixed long plate and the front end of the upright plate. An irregularly shaped cylinder is fixedly connected to the outer side of the rotating shaft near the gear rotating mechanism. A fixed bottom wheel is fixedly connected to the bottom of the irregularly shaped cylinder. A second fixed long plate is fixedly connected to the bottom of the rotating shaft and the front end of the upright plate.

[0009] Furthermore, the gear rotation mechanism includes a fixed block fixedly connected to the front end of the upright plate and near the rotating shaft, a rigid long plate rotatably connected to the fixed block, and a small wheel rotatably connected to one end of the rigid long plate near the rotating shaft.

[0010] Furthermore, after the motor is turned on, the gear block, gear base plate and rotating shaft fixedly connected to it will rotate synchronously. The bottom of the rotating shaft is fixedly connected to an irregularly shaped cylinder, and the top of the irregularly shaped cylinder is clamped with a small wheel. When it rotates, the special top shape design will lift the small wheel to different heights, and at the same time drive the rigid plate to rotate around the fixed block.

[0011] Furthermore, the force-enhancing mechanism includes a rotating wheel rotatably connected to the side of the rigid long plate away from the rotating shaft. A central shaft is rotatably connected to the side of the rotating wheel near the vertical plate. A fixed wheel is fixedly connected to the outer side of the central shaft near the top and to the front end of the vertical plate. A fixed short plate one is fixedly connected to the outer side of the central shaft and to the front end of the vertical plate. Long cylinders are fixedly connected to the bottom two sides of the fixed short plate one. A central block is fixedly connected to the middle of the outer side of the long cylinders. A multi-stroke mechanism is rotatably connected to the bottom of the fixed short plate one and to the inner side of the long cylinders. A fixed short plate two is fixedly connected to the bottom of the multi-stroke mechanism. A cutter is fixedly connected to the bottom of the fixed short plate two.

[0012] Furthermore, the multi-stroke mechanism includes a rotating plate 1 rotatably connected to the bottom of the fixed short plate 1 and the inner side of the long cylinder, a stationary block fixedly connected to the bottom of the central shaft, a rotating plate 2 rotatably connected to the bottom of the rotating plate 1 and the outer side of the stationary block, a rotating plate 3 rotatably connected to the bottom of the rotating plate 1 and the top of the rotating plate 2, and a fixed base provided at the bottom of the rotating plate 3 and the top of the fixed short plate 2.

[0013] Furthermore, when the rigid long plate rotates around the fixed block, the end closest to the fixed wheel moves downwards, causing the central shaft and the stationary block fixedly connected to the bottom of the central shaft to move downwards synchronously. The rotating plate two connected to the stationary block moves downwards until one end of the rotating plate two touches the central block, marking that the central shaft has reached its limit position. That is, the fixed short plate two and the cutter below it also cut to their limit positions, maximizing the cutting force on the steel bar. In the low stroke mode of the rigid long plate, the movement trajectory is vertical downward, reducing the loss of horizontal force. After the multi-stroke mode of rotating plate one, rotating plate two and rotating plate three, by shortening the stroke height, the system energy is more concentrated in the vertical shearing direction, improving the actual output force of the cutter.

[0014] Furthermore, the variable diameter clamping mechanism includes a base plate wheel fixedly connected to the top of the large base plate and near the auxiliary plate. A central rotating wheel is rotatably connected to the inner ring of the base plate wheel. Auxiliary blocks are evenly distributed circumferentially on the front side of the central rotating wheel. An outer layer wheel is fixedly connected to the front end of the auxiliary blocks. A large rotating plate is rotatably connected to the front end of the base plate wheel near the outer circumferential side of the central rotating wheel. A clamping wheel is rotatably connected to the other end of the large rotating plate. A limit frame is rotatably connected to the outer side of the large rotating plate and the rear side of the outer layer wheel. A fixed base plate one is fixedly connected to the top outer side of the central rotating wheel. A fixed base plate two is fixedly connected to the front end of the base plate wheel near the central rotating wheel. A rotating block two is rotatably connected to the front end of the fixed base plate two. A rotating block one is rotatably connected to the front end of the fixed base plate one. A threaded rod is rotatably connected inside the rotating block one and the rotating block two. A rotating screw is provided at one end of the threaded rod near the fixed base plate two and one side of the rotating block two.

[0015] Furthermore, the fixed base plate is fixedly connected to the central rotating wheel. When the rotating screw is adjusted, the threaded rod will limit the rotation of the central rotating wheel caused by the fixed base plate. When the central rotating wheel rotates clockwise, that is, when the fixed base plate moves towards the fixed base plate, the central rotating wheel will drive the limiting frame connected to it to rotate synchronously. The limiting frame will limit the rotation of the large rotating plate in a specific direction, that is, the clamping wheel will move away from the center, preparing to accommodate steel bars of different sizes. After the steel bar is successfully clamped into the variable diameter clamping mechanism, the rotating screw is rotated in the opposite direction. When the central rotating wheel rotates counterclockwise, that is, when the fixed base plate moves away from the fixed base plate, the central rotating wheel will drive the limiting frame connected to it to rotate synchronously. The limiting frame will limit the rotation of the large rotating plate in a specific direction, that is, the clamping wheel will move towards the center, until it can stably clamp the steel bar.

[0016] The technical effects and advantages of this invention are as follows:

[0017] 1. This invention incorporates a force-amplifying mechanism that efficiently converts the limited vertical displacement input from the motor via the rotary compression mechanism through a multi-stroke lever combination. This transforms the small-stroke, high-frequency mechanical motion into a large-tonnage, short-stroke explosive shearing force. The mechanism uses the rigid fulcrum formed by the rotating plate two abutting against the central block, combined with the guiding effect of the rotating plate three, to highly focus the energy on the vertical downward path of the cutter. This amplifies the motor's output force, enabling even ordinary low-power motors to cleanly and efficiently cut threaded steel in one go, producing a smooth, burr-free cut. Simultaneously, it avoids the high energy consumption, noise, and environmental pollution problems associated with hydraulic systems.

[0018] 2. This invention features a variable-diameter clamping mechanism that, through the linkage between the threaded rod and the central rotating wheel, achieves rapid adaptive clamping of steel bars of different diameters. Simply rotating the threaded rod drives the central rotating wheel to rotate, and the limiting frame precisely controls the synchronous opening and closing of the large rotating plate, ensuring that the clamping wheel always grips the steel bar evenly from the radial direction. This eliminates the eccentricity problem caused by unilateral clamping. The uniform clamping throughout the circumference effectively ensures the stability of the steel bar during cutting, avoiding uneven cutting surfaces and abnormal wear of the cutting blade caused by slippage. This significantly improves the safety and reliability of the equipment. The fully mechanical adjustment method overcomes the cumbersome process of repeatedly loosening bolts, manually aligning, and re-locking the traditional baffle positioning, greatly improving the switching efficiency for different specifications of steel bars. It is suitable for the processing needs of high-strength steel bars in multiple specifications and small batches in the furniture manufacturing industry. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a side view of the overall structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the rotary compression mechanism of the present invention.

[0022] Figure 4 This is a schematic diagram of the gear rotation mechanism of the present invention.

[0023] Figure 5 This is a schematic diagram of the force-increasing mechanism of the present invention.

[0024] Figure 6 This is a schematic diagram of the variable diameter clamping mechanism of the present invention.

[0025] The attached figures are labeled as follows: 1. Large base plate; 2. Vertical plate; 3. Motor; 4. Rotary wheel compression mechanism; 41. Fixed frame; 42. Gear block; 43. Gear base plate; 44. Fixed long plate one; 45. Gear rotation mechanism; 451. Hard long plate; 452. Fixed block; 453. Small round wheel; 46. Irregular cylinder; 47. Fixed bottom wheel; 48. Fixed long plate two; 49. Rotating shaft; 5. Force amplification mechanism; 51. Fixed round wheel; 52. Central shaft; 53. Rotating wheel; 54. Fixed short plate one; 55. Central block; 56. Fixed short plate two; 5 7. Cutting blade; 58. Long cylinder; 59. Multi-stroke mechanism; 591. Rotating plate one; 592. Fixed base; 593. Rotating plate two; 594. Stationary block; 595. Rotating plate three; 6. Variable diameter clamping mechanism; 61. Base plate wheel; 611. Central rotating wheel; 62. Outer wheel; 63. Auxiliary block; 64. Large rotating plate; 65. Limiting frame; 66. Clamping wheel; 67. Fixed base plate one; 671. Rotating block one; 68. Fixed base plate two; 681. Rotating block two; 69. Threaded rod; 691. Rotating screw; 7. Auxiliary plate. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The steel bar cutting equipment for electric sofa bed production involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Reference Figure 1 and Figure 2 The present invention provides a steel bar cutting device for the production of electric sofa beds, including a large base plate 1, a vertical plate 2 and a motor 3. The vertical plate 2 is fixedly connected to the top center of the large base plate 1. The motor 3 is fixedly connected to the front end of the vertical plate 2 near the top. A rotary wheel compression mechanism 4 is fixedly connected to the front end of the vertical plate 2 and the bottom of the motor 3. A force-increasing mechanism 5 is fixedly connected to the front end of the vertical plate 2 and one side of the rotary wheel compression mechanism 4. An auxiliary plate 7 is fixedly connected to the front end of the vertical plate 2 near the bottom and the top of the large base plate 1. A diameter-changing clamping mechanism 6 is fixedly connected to the top of the large base plate 1 and the two sides of the vertical plate 2 near the auxiliary plate 7.

[0028] Reference Figure 1 and Figure 2 The device is started by motor 3, which drives the rotary compression mechanism 4 to convert rotation into vertical displacement. The vertical force is then amplified by force amplification mechanism 5, which can cut the steel bar fixed by the variable diameter clamping mechanism 6.

[0029] Reference Figure 3The rotary compression mechanism 4 includes a fixed frame 41 fixed to the bottom of the motor 3 and the front end of the upright plate 2 near the top. A gear block 42 is fixedly connected to the bottom of the motor 3 and the inner side of the fixed frame 41. A gear base plate 43 is fixedly connected to the bottom of the gear block 42. A rotating shaft 49 is fixedly connected to the bottom of the gear base plate 43. A fixed long plate 44 is fixedly connected to the bottom of the gear base plate 43 and the front end of the upright plate 2. A gear rotating mechanism 45 is fixedly connected to the bottom of the fixed long plate 44 and the front end of the upright plate 2. An irregularly shaped cylinder 46 is fixedly connected to the outer side of the rotating shaft 49 near the position of the gear rotating mechanism 45. A fixed bottom wheel 47 is fixedly connected to the bottom of the irregularly shaped cylinder 46. A fixed long plate 48 is fixedly connected to the bottom of the rotating shaft 49 and the front end of the upright plate 2.

[0030] Reference Figure 4 The gear rotation mechanism 45 includes a fixed block 452 fixedly connected to the front end of the vertical plate 2 and near the rotating shaft 49. A rigid long plate 451 is rotatably connected to the fixed block 452, and a small wheel 453 is rotatably connected to one end of the rigid long plate 451 near the rotating shaft 49.

[0031] Reference Figure 3 and Figure 4 When the motor 3 is turned on, the gear block 42, gear base plate 43 and rotating shaft 49 fixedly connected to it will rotate synchronously. The bottom of the rotating shaft 49 is fixedly connected to an irregular cylindrical cylinder 46, and the top of the irregular cylindrical cylinder 46 is clamped with a small wheel 453. When it rotates, the special top shape design will lift the small wheel 453 to different heights, and at the same time drive the rigid long plate 451 to rotate around the fixed block 452.

[0032] Reference Figure 5 The force-enhancing mechanism 5 includes a rotating wheel 53 rotatably connected to the side of the rigid long plate 451 away from the rotating shaft 49. A central shaft 52 is rotatably connected to the side of the rotating wheel 53 near the vertical plate 2. A fixed wheel 51 is fixedly connected to the outer side of the central shaft 52 near the top and to the front end of the vertical plate 2. A fixed short plate 54 is fixedly connected to the outer side of the central shaft 52 and to the front end of the vertical plate 2. A long cylinder 58 is fixedly connected to both sides of the bottom of the fixed short plate 54. A central block 55 is fixedly connected to the middle of the outer side of the long cylinder 58. A multi-stroke mechanism 59 is rotatably connected to the bottom of the fixed short plate 54 and the inner side of the long cylinder 58. A fixed short plate 56 is fixedly connected to the bottom of the multi-stroke mechanism 59. A cutter 57 is fixedly connected to the bottom of the fixed short plate 56.

[0033] Reference Figure 5The multi-stroke mechanism 59 includes a rotating plate 591 rotatably connected to the bottom of the fixed short plate 54 and the inner side of the long cylinder 58. A stationary block 594 is fixedly connected to the bottom of the central shaft 52. A rotating plate 593 is rotatably connected to the bottom of the rotating plate 591 and the outer side of the stationary block 594. A rotating plate 595 is rotatably connected to the bottom of the rotating plate 591 and the top of the rotating plate 593. A fixed base 592 is provided at the bottom of the rotating plate 595 and the top of the fixed short plate 56.

[0034] Reference Figure 5 When the rigid long plate 451 rotates around the fixed block 452, the end near the fixed wheel 51 moves downward, which in turn moves the central shaft 52 and the stationary block 594 fixedly connected to the bottom of the central shaft 52 downward in sync. The rotating plate 593 connected to the stationary block 594 moves downward until one end of the rotating plate 593 touches the central block 55, which means that the central shaft 52 has reached its limit position. That is, the fixed short plate 56 and the cutter 57 below it also cut and extend to the limit position, so that the cutting force on the steel bar reaches the maximum. In the low stroke mode of the rigid long plate 451, the movement trajectory is vertical downward, which reduces the loss of horizontal force component. Then, through the multi-stroke mode of rotating plate 591, rotating plate 593 and rotating plate 595, by shortening the stroke height, the system energy is more concentrated in the vertical shearing direction, which increases the actual output force of the cutter 57.

[0035] Reference Figure 6 The variable diameter clamping mechanism 6 includes a base plate wheel 61 fixedly connected to the top of the base plate 1 and near the auxiliary plate 7. A central rotating wheel 611 is rotatably connected to the inner ring of the base plate wheel 61. Auxiliary blocks 63 are evenly distributed circumferentially on the front side of the central rotating wheel 611. An outer layer wheel 62 is fixedly connected to the front end of the auxiliary blocks 63. A large rotating plate 64 is rotatably connected to the front end of the base plate wheel 61 near the outer circumferential side of the central rotating wheel 611. A clamping wheel 66 is rotatably connected to the other end of the large rotating plate 64. The outer side of the large rotating plate 64 and the rear side of the outer layer wheel 62 are rotatably connected. A limiting frame 65 is provided. A fixed base plate 67 is fixedly connected to the outer top of the central rotating wheel 611. A fixed base plate 68 is fixedly connected to the front end of the base plate wheel 61 near the central rotating wheel 611. A rotating block 681 is rotatably connected to the front end of the fixed base plate 68. A rotating block 671 is rotatably connected to the front end of the fixed base plate 671. A threaded rod 69 is rotatably connected inside the rotating block 671 and the rotating block 681. A rotating screw 691 is provided at one end of the threaded rod 69 near the fixed base plate 68 and one side of the rotating block 681.

[0036] Reference Figure 6The fixed base plate 67 is fixedly connected to the central rotating wheel 611. When the rotating screw 691 is adjusted, the threaded rod 69 will limit the fixed base plate 67 to rotate, causing the central rotating wheel 611 to rotate. When the central rotating wheel 611 rotates clockwise, that is, when the fixed base plate 67 moves closer to the fixed base plate 68, the central rotating wheel 611 will drive the limiting frame 65 connected to it to rotate synchronously. The limiting frame 65 will limit the rotation of the large rotating plate 64 in a specific direction, that is, the clamping wheel 66 will move away from the center. The mechanism is prepared to accommodate steel bars of different sizes. After the steel bars are successfully clamped into the variable diameter clamping mechanism 6, the rotating screw 691 is rotated in the opposite direction. When the central rotating wheel 611 rotates counterclockwise, that is, when the fixed base plate 1 67 moves away from the fixed base plate 2 68, the central rotating wheel 611 will drive the limiting frame 65 connected to it to rotate synchronously. The limiting frame 65 will limit the rotation of the large rotating plate 64 in a specific direction, that is, the clamping wheel 66 will move towards the center until it can stably clamp the steel bars.

[0037] The working principle of this invention is as follows: The device operates via motor 3, which drives the rotary compression mechanism 4 to convert rotation into vertical displacement. The force is then amplified by the force amplification mechanism 5, thereby cutting the steel bar fixed by the variable diameter clamping mechanism 6. When motor 3 is turned on, the gear block 42, gear base plate 43, and rotating shaft 49, which are fixedly connected below it, rotate synchronously. A shaped cylinder 46 is fixedly connected to the bottom of the rotating shaft 49, and a small wheel 453 is clamped to the top of the shaped cylinder 46. When it rotates, the special top shape design lifts the small wheel 453 to different heights, simultaneously causing the rigid long plate 451 to rotate around the fixed block. When the rigid long plate 451 rotates around the fixed block 452, the end near the fixed wheel 51 moves downward, causing the central shaft 52 and the stationary block 594 fixedly connected to the bottom of the central shaft 52 to move downward synchronously. The rotating plate 593 rotatably connected to the stationary block 594 moves downward until one end of the rotating plate 593 touches the central block 55, marking that the central shaft 52 has reached its limit position. That is, the fixed short plate 56 and the cutter 57 below it also cut and extend to their limit positions, maximizing the cutting force on the steel bar. In the low-stroke mode of the rigid long plate 451, the movement trajectory is vertical downward, reducing the loss of horizontal force component. Through the multi-stroke mode of rotating plates 591, 593, and 595, the system energy is more concentrated in the vertical shearing direction by shortening the stroke height, thereby increasing the actual output force of the cutter 57. The fixed base plate 67 is fixedly connected to the central rotating wheel 611. When the rotating screw 691 is adjusted, the threaded rod 69, through the thread, limits the fixed base plate 67 to drive the central rotating wheel 611 to rotate. When the central rotating wheel 611 rotates clockwise, that is, when the fixed base plate 67 moves towards the fixed base plate 68, the central rotating wheel 611 will drive the limiting frame 65 connected to it to rotate synchronously. The limiting frame 65 will limit the large rotating plate 691. 4. A specific direction of rotation is generated, that is, the clamping wheel 66 will move away from the center to prepare to accommodate steel bars of different sizes. After the steel bar is successfully clamped into the variable diameter clamping mechanism 6, the rotating screw 691 is rotated in the opposite direction. When the central rotating wheel 611 rotates counterclockwise, that is, when the fixed base plate 1 67 moves away from the fixed base plate 2 68, the central rotating wheel 611 will drive the limiting frame 65 connected to it to rotate synchronously. The limiting frame 65 will limit the rotation of the large rotating plate 64 in a specific direction, that is, the clamping wheel 66 will move closer to the center until it can stably clamp the steel bar until the cutter 57 completes the pressing and cutting action.

[0038] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A steel bar cutting device for producing electric sofa beds, comprising a base plate (1), a vertical plate (2), and a motor (3), characterized in that: A vertical plate (2) is fixedly connected to the top center of the large base plate (1). A motor (3) is fixedly connected to the front end of the vertical plate (2) near the top. A rotary compression mechanism (4) is fixedly connected to the front end of the vertical plate (2) and the bottom of the motor (3). A force-increasing mechanism (5) is fixedly connected to the front end of the vertical plate (2) and one side of the rotary compression mechanism (4). An auxiliary plate (7) is fixedly connected to the front end of the vertical plate (2) near the bottom and the top of the large base plate (1). A variable diameter clamping mechanism (6) is fixedly connected to the top of the large base plate (1) and both sides of the vertical plate (2) near the auxiliary plate (7). The motor (3) starts working, driving the rotary compression mechanism (4) to convert the rotation into vertical displacement, and then through the force amplification mechanism (5) the vertical force is amplified, thereby cutting the steel bar fixed by the variable diameter clamping mechanism (6). The rotary compression mechanism (4) includes a fixed frame (41) fixed to the bottom of the motor (3) and the front end of the vertical plate (2) near the top. A gear block (42) is fixedly connected to the bottom of the motor (3) and the inner side of the fixed frame (41). A gear base plate (43) is fixedly connected to the bottom of the gear block (42). A rotating shaft (49) is fixedly connected to the bottom of the gear base plate (43). A fixed long plate (44) is fixedly connected to the bottom of the gear base plate (43) and the front end of the upright plate (2). A gear rotating mechanism (45) is fixedly connected to the bottom of the fixed long plate (44) and the front end of the upright plate (2). A shaped cylinder (46) is fixedly connected to the outer side of the rotating shaft (49) near the gear rotating mechanism (45). A fixed bottom wheel (47) is fixedly connected to the bottom of the shaped cylinder (46). A fixed long plate (48) is fixedly connected to the bottom of the rotating shaft (49) and the front end of the upright plate (2). The gear rotation mechanism (45) includes a fixed block (452) fixedly connected to the front end of the vertical plate (2) and near the rotating shaft (49). A rigid long plate (451) is rotatably connected to the fixed block (452), and a small wheel (453) is rotatably connected to one end of the rigid long plate (451) near the rotating shaft (49). The force-enhancing mechanism (5) includes a rotating wheel (53) rotatably connected to the side of the rigid long plate (451) away from the rotating shaft (49). The rotating wheel (53) is rotatably connected to a central shaft (52) on the side near the vertical plate (2). A fixed wheel (51) is fixedly connected to the outer end of the central shaft (52) near the top and the front end of the vertical plate (2). A fixed short plate (54) is fixedly connected to the outer side of the central shaft (52) and the front end of the vertical plate (2).

2. The steel bar cutting equipment for producing electric sofa beds according to claim 1, characterized in that: The bottom of the first fixed short plate (54) is fixedly connected to two long cylinders (58), and a center block (55) is fixedly connected to the middle of the outer side of the long cylinder (58). The bottom of the first fixed short plate (54) and the inner side of the long cylinder (58) are rotatably connected to a multi-stroke mechanism (59). The bottom of the multi-stroke mechanism (59) is fixedly connected to a second fixed short plate (56), and the bottom of the second fixed short plate (56) is fixedly connected to a cutter (57).

3. The steel bar cutting equipment for producing electric sofa beds according to claim 2, characterized in that: The multi-stroke mechanism (59) includes a rotating plate (591) rotatably connected to the bottom of the fixed short plate (54) and the inner side of the long cylinder (58), a stationary block (594) fixedly connected to the bottom of the central shaft (52), a rotating plate (593) rotatably connected to the bottom of the rotating plate (591) and the outer side of the stationary block (594), a rotating plate (595) rotatably connected to the bottom of the rotating plate (591) and the top of the rotating plate (593), and a fixed base (592) provided at the bottom of the rotating plate (595) and the top of the fixed short plate (56).

4. The steel bar cutting equipment for producing electric sofa beds according to claim 1, characterized in that: The variable diameter clamping mechanism (6) includes a base plate wheel (61) fixedly connected to the top of the base plate (1) and near the auxiliary plate (7), and the inner ring of the base plate wheel (61) is rotatably connected to a central rotating wheel (611).

5. The steel bar cutting equipment for producing electric sofa beds according to claim 4, characterized in that: Auxiliary blocks (63) are evenly distributed around the front circumference of the central rotating wheel (611). An outer wheel (62) is fixedly connected to the front end of the auxiliary block (63). A large rotating plate (64) is rotatably connected to the front end of the base plate wheel (61) near the outer circumference of the central rotating wheel (611). A clamping wheel (66) is rotatably connected to the other end of the large rotating plate (64). A limit frame (65) is rotatably connected to the outer side of the large rotating plate (64) and the rear side of the outer wheel (62). A fixed base plate one (67) is fixedly connected to the top outer side of the central rotating wheel (611). A fixed base plate two (68) is fixedly connected to the front end of the base plate wheel (61) near the central rotating wheel (611).

6. The steel bar cutting equipment for producing electric sofa beds according to claim 5, characterized in that: The front end of the fixed base plate 2 (68) is rotatably connected to the rotating block 2 (681), and the front end of the fixed base plate 1 (67) is rotatably connected to the rotating block 1 (671). The rotating block 1 (671) and the rotating block 2 (681) are rotatably connected to the threaded rod (69). The threaded rod (69) is provided with a rotating screw (691) at one end near the fixed base plate 2 (68) and one side of the rotating block 2 (681).

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