CN205147179U - Saw cut integrative equipment of cuting - Google Patents

Abstract

The utility model discloses a saw cut integrative equipment of cuting, its structure includes: the top surface has the double track way on unable adjustment base, , supports in the double track main frame on saying, at main frame side connection reciprocating motion actuating mechanism, inboard and show shearing mechanism and saw cut the device at the main frame, reciprocating motion actuating mechanism driven main machine frame drives shearing mechanism and saw cuts the device says reciprocating motion along the double track, to the reinforcing bar that runs through the main frame respectively with shearing mechanism or saw cut the device and implement to cut off. The utility model discloses beneficial effect is: saw cutting the reinforcing bar device and shearing the reinforcing bar device and set up in a main frame, move through the reciprocating motion actuating mechanism driven main machine frame, make to saw cut the reinforcing bar and shear two kinds of different technologies of cutting off the reinforcing bar of reinforcing bar and freely to switch over, avoid being cut off the transport of reinforcing bar, the messenger is cut off, and the reinforcing bar is concentrated to be stacked, reduction area, improve equipment's utilization ratio, simple structure is compact, and alternate use is convenient, is applicable to to set up on removing the main frame and the installation.

Description

A kind of sawing and shearing integrated equipment

technical field

The utility model relates to a device for cutting steel bars, in particular to a sawing and shearing integrated device with a sawing and cutting steel bar device and a cutting steel bar device.

Background technique

In the prior art, equipment for cutting steel bars includes sawing machines for cutting steel bars with saw blades and shears for cutting steel bars with shears. The straightness of the end of the steel bar after the above-mentioned sawing machine cuts the steel bar is high, which is suitable for the steel bar with high requirements on the straightness of the end; the straightness of the end of the steel bar after the above-mentioned shearing machine is cut is poor, with a slope The shearing machine has high efficiency in cutting steel bars, and is suitable for steel bars that require poor straightness at the ends.

In the prior art, the sawing machine and the shearing machine are two types of steel bar shearing equipment with different structures. The two different structures of shearing steel bar equipment are installed separately, which has the disadvantages of large floor space, inconvenient alternate use, and equipment utilization. Defects such as low rate.

Contents of the invention

The purpose of this utility model is to overcome the shortcomings of the above-mentioned prior art, and provide a kind of sawing and shearing integrated equipment that installs a sawing and shearing steel bar device and a shearing steel bar device on one frame at the same time, has a wide range of application, and is convenient to use alternately. .

The technical solution to solve the above technical problems is: a sawing and shearing integrated equipment, the sawing and shearing integrated equipment includes: a fixed base, on the upper top surface of the fixed base is provided with double tracks perpendicular to the steel bar conveying direction; A main frame is supported on double rails, and a reciprocating drive mechanism is connected to one side of the main frame; a shearing device and a sawing device for cutting steel bars are arranged side by side along the direction of the double rails inside the main frame; the reciprocating drive mechanism drives the main frame The shearing device and the sawing device are driven to reciprocate along the double tracks, and the steel bars passing through the main frame are respectively cut by the shearing device or the sawing device.

The beneficial effects of the utility model are: the utility model overcomes the defect that the two sets of equipment in the prior art can complete different cutting steel bar processes; the utility model arranges the sawing steel bar device and the shearing steel bar device in a main frame, through The reciprocating drive mechanism drives the main frame to move, so that the two different cutting processes of sawing steel bars and shearing steel bars can be switched freely, avoiding the transportation of cut steel bars, making the cut steel bars centralized stacking, reducing the occupied area, and improving the utilization of equipment The utility model sawing steel bar device and shearing steel bar device are compact in structure, simple in structure, easy to use alternately, and are suitable for setting and installation on the mobile main frame.

Description of drawings

Fig. 1 is a front view of the utility model, in which the working state of the shearing device is shown to cut off the reinforcing bar;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the A-A sectional view of Fig. 2;

Figure 3a is a partial enlarged view of W in Figure 3;

Fig. 4 is the C-C sectional view among Fig. 3 a, shows spring return mechanism;

Fig. 5 is a D-D sectional view of Fig. 4;

Fig. 6 is a front view of the utility model, in which the sawing device is shown to cut off the working state of the steel bar;

Figure 7 is a top view of Figure 6;

Fig. 8 is a sectional view along line E-E in Fig. 7 .

"Description of Serial Numbers in the Attached Drawings"

1: fixed base; 1a: base bracket; 1b: bottom track of the base; 2: double track; 3: main frame; 3a: main frame; 5: electric actuator; 5a: telescopic rod; 6: support wheel; 7: steel bar ;8: waste collection vehicle; 8a: waste collection vehicle roller; 9: shearing motor; 10: shearing motor fixing frame; 11: upper cover of shearing box; 12: key; 13: shearing box; 14: Worm; 15: telescopic shaft; 16: fixed tool seat; 17: round nut; 18: ball bearing; 19: thrust bearing; 20: worm wheel; 21: shear screw shaft; 22: shear guide shaft; 24: spring; 25: guide seat; 27: pressing seat; 28: fixed knife; 29: movable knife; 30: movable knife seat; 30a: movable knife seat horizontal plate; 31: movable knife seat pressure plate; 32, 36: bearing cover; 35: driven sprocket; 37: chain; 38: driving sprocket; 40: shearing device;

50: Elevator; 50a: Screw output shaft; 51: Elevator fixing seat; 52: Sawing guide shaft; 53: Saw blade deceleration motor fixing seat; 54: Saw blade deceleration motor; 54a: Motor output shaft; 55: Saw blade; 56: guide shaft fixing seat; 57: nut clamping block; 58: sawing screw shaft; 59: sawing fixing plate; 59a: sawing screw shaft bracket; 59b: steel bar perforation; 60: Compression electric cylinder; 60a: Piston rod; 61: Clamping reduction motor; 70: Saw cutting device; 71: Squeeze clamping device; 80: Spring return mechanism;

detailed description

Embodiments of the utility model are described in further detail below in conjunction with the accompanying drawings.

As shown in the figure, the utility model provides a sawing and shearing integrated equipment, the sawing and shearing integrated equipment includes: a fixed base 1, on the upper top surface of the fixed base 1 is provided with double Track 2; a main frame 3 is supported on the double track 2, and a reciprocating drive mechanism is connected to one side of the main frame 3; a shearing device 40 and a cutting device 40 for cutting steel bars 7 are arranged side by side along the direction of the double track 2 inside the main frame 3 The sawing device 70; the reciprocating drive mechanism drives the main frame 3 to drive the shearing device 40 and the sawing device 70 to reciprocate along the double track 2, and implement the shearing device 40 or the sawing device 70 on the steel bars 7 running through the main frame 3 respectively. cut off.

The steel bars 7 passing through the main frame 3 along the steel bar conveying direction P are respectively cut by the shearing device 40 or the sawing device 70 .

A plurality of support wheels 6 are arranged at the bottom of the main frame 3, and a plurality of support wheels 6 support the main frame 3 to roll and slide on the double track 2; between the upper top surface and the lower bottom surface of the fixed base 1, a collecting and cutting steel bar 7 is arranged The waste collection vehicle 8 that drops waste, the bottom of the waste collection vehicle 8 is provided with a waste collection vehicle roller 8a, and the waste collection vehicle roller 8a rolls and slides on the lower track 1b of the base, and the lower track 1b of the base is arranged on the lower bottom surface of the fixed base 1.

The reciprocating drive mechanism is an electric push rod 5, the housing of the electric push rod 5 is hinged on the top of the base support 1a, and the bottom of the base support 1a is fixed on the fixed base 1; the end of the telescopic rod of the electric push rod 5 is hinged on the main frame side of frame 3.

More specifically, as shown in Figure 1, the fixed base 1 is fixed on the ground, the double track 2 is fixed on the top surface of the fixed base frame 1, and a base bracket 1a protrudes from the left side of the top surface of the fixed base 1, A supporting shaft is respectively stretched out from the left and right sides of the hinged electric push rod 5 above the base bracket 1a, and the end of the telescopic rod 5a of the electric push rod 5 is hinged on the left side of the main frame 3 with a pin shaft; The support wheel 6, the electric push rod 5 drives the main frame 3 and the support wheel 6 at the bottom of the main frame 3 to drive the shearing device 40 and the sawing device 70 to reciprocate along the double track 2, so as to be convenient to cut off the steel bar.

Described shearing device 40 comprises: the fixed knife seat 16 that is installed on the main frame 3, is installed in the shear box body 13 of fixed knife seat 16 tops; 14 and the worm gear 20 meshed with the worm screw 14; the central hole of the worm gear 20 is fixedly connected to the shaft on the top of the shear screw shaft 21 through the key 12, and the screw rod on the bottom of the shear screw shaft 21 is fitted in the internally threaded hole of the telescopic shaft 15, and the telescopic shaft 15 bottoms are hinged on the top of the movable knife seat 30; the left and right sides of the fixed knife seat 16 are respectively equipped with movable knife seat pressing plates 31; In the groove; fixed knife 28 and movable knife 29 are respectively housed in the bottom of fixed knife seat 16 and the bottom of movable knife seat 30, and the gap between fixed knife 28 and movable knife 29 has steel bar 7 to pass through; In movable knife seat 30 A spring return mechanism 80 is installed on it. The elastic force of the spring return mechanism 80 pushes the movable knife seat 30 to reset.

The spring return mechanism 80 includes: a pressing seat 27 with a "U" shape frame, on the upper part of the inner side of the pressing seat 27, a movable knife seat horizontal plate 30a is slid, and the movable knife seat horizontal plate 30a protrudes and is arranged on the movable The upper side of the knife seat 30; the lower end of the shear guide shaft 22 is fixed with a fastener at the inner bottom of the press seat 27, and the upper end of the shear guide shaft 22 runs through the through hole of the movable knife seat horizontal plate 30a and is limited to the movable position by the fastener. On the upper end surface of the knife seat horizontal plate 30a, the through hole of the movable knife seat horizontal plate 30a is slidingly matched with the shearing guide shaft 22; Spring 24 is sleeved on the diameter; Pressing seat 27 left and right sides are slipped respectively in guide seat 25 grooves, and two guide seats 25 mirror images are respectively fixed on the fixed knife seat 16.

More specifically, as shown in Fig. 3 and Fig. 3a, there are two shearing guide shafts 22 arranged at intervals, the upper and lower ends of the two shearing guide shafts 22 are bolts respectively, and the two shearing guide shafts 22 Bolts at the lower end pass through the through holes at the bottom of the pressing seat 27 and are respectively fixed on the bottom of the pressing seat 27 by nuts; the bolts at the upper ends of the two shear guide shafts 22 respectively pass through the through holes of the movable knife seat horizontal plate 30a and are limited by the nuts in the movable position. On the upper end face of the knife seat horizontal plate 30a, the fasteners installed on the upper and lower ends of the shear guide shaft 22 can limit the downward movement of the shear guide shaft 22; match.

As shown in Figure 1, the bearing that described worm screw 14 is compressed by bearing gland 32 and the bearing that is compressed by bearing gland 36 are supported in shear box 13; One end is equipped with driven sprocket 35, and chain 37 suits driven sprocket 35 and driving sprocket 38, and driving sprocket 38 connects shearing motor 9, and shearing motor 9 is fixed on the shearing motor holder 10, and shearing motor The fixed frame 10 is fixed on the top of the shear box upper cover 11 .

More specifically, the shear box upper cover 11 is fixed on the upper surface of the shear box 13, and the upper part of the worm wheel 20 is supported by a thrust bearing 19, and the thrust bearing 19 is fixed in the shear box upper cover 11; The bottom of the worm wheel is supported by the shoulder surface of the shear screw shaft 21, and the central hole of the worm wheel 20 is fixedly connected to the shaft on the top of the shear screw shaft 21 by the key 12.

The upper end of the shearing screw shaft 21 is fixed with a ball bearing 18 through a round nut 17, and the ball bearing 18 supports the shearing screw shaft 21 in the inner hole of the upper cover 11 of the shearing box. Shear motor 9 is the power source that movable knife 29 and pressing seat 27 move up and down.

The working process of shearing device 40 is described as follows:

As shown in Figure 2, the telescopic rod 5a of the electric push rod 5 retracts, pulls the main frame 3, and makes the steel bar 7 pass through the gap between the fixed knife 28 and the movable knife 29 in the shearing device 40 in the main frame 3.

The shear motor 9 drives the worm 14 to rotate and drives the worm wheel 20 and the shear screw shaft 21 to rotate, thereby driving the telescopic shaft 15, the movable knife seat 30, the movable knife seat horizontal plate 30a and the pressing seat 27 to move downward; when the pressing seat 27 When contacting reinforcing bar 7, pressing seat 27 stops moving, and this moment, movable knife seat 30 drives movable knife 29 and continues to move downwards while shearing steel bar 7, and movable knife seat horizontal plate 30a pushes down spring 24 and continues to move toward with movable knife seat 30. Move down; after the steel bar 7 is cut off, the shear motor 9 reversely drives the worm 14, the worm gear 20 and the shear screw shaft 21 to reverse, the telescopic shaft 15, the movable knife seat 30, the movable knife seat horizontal plate 30a and the pressing seat 27 Move upwards, while spring 24 promotes the movable knife seat cross plate 30a to move upwards and reset. After spring 24 returned to the initial state, the pressing seat 27 was separated from the reinforcing bar 7. The horizontal plate 30a moves upwards to the initial position, the shearing motor 9 stops, and the working process of the shearing device is completed.

The sawing device 70 includes: a sawing fixing plate 59 , a saw blade reduction motor 54 equipped with a saw blade 55 , and an extruding and clamping device 71 for clamping the steel bar 7 .

The sawing fixing plate 59 is fixed on the inner side of the main frame 3 with a fastener perpendicular to the steel bar conveying direction P, and the sawing fixing plate 59 is provided with a steel bar perforation 59b, and the sawing fixing plate 59 outputs the reinforcing bar 7. A squeeze clamping device 71 is arranged on the side;

The saw blade reduction motor 54 is arranged on the saw blade reduction motor fixing seat 53 adjacent to the extrusion clamping device 71, and the saw blade 55 is installed on the motor output shaft 54a of the saw blade reduction motor 54 along the direction P perpendicular to the steel bar conveyance; The rear part of the saw blade reduction motor fixing seat 53 is slidingly fitted on the sawing guide shaft 52, and the two ends of the sawing guide shaft 52 are respectively fixed on the main frame 3; the left side of the saw blade reduction motor fixing seat 53 is connected to the elevator 50 The screw output shaft 50a of the lifter 50 housing is installed on one end of the lifter fixing base 51, and the other end of the lifter fixing base 51 is fixed on the main frame 3.

The two ends of the sawing guide shaft 52 are respectively fixed on one end of the elevator fixed seat 51 and one end of the guide shaft fixed seat 56, and the other end of the elevator fixed seat 51 and the other end of the guide shaft fixed seat 56 are respectively fixed on the two sides of the host support 3a. One end, the other end of the two sides of the main frame support 3a is fixed on the main frame 3 .

The pressing and clamping device 71 includes: a pressing electric cylinder 60 that presses the steel bar 7 from the top, and a clamping reduction motor 61 that presses the steel bar 7 from both sides.

Described compressing electric cylinder 60 is fixed on the side of sawing fixed plate 59 output reinforcing bar 7, and the piston rod 60a of compressing electric cylinder 60 stretches out downwards and can press down the reinforcing bar 7 output from reinforcing bar perforation 59b; The steel bar outlet end is provided with a steel bar supporting plate 59c corresponding to the position of the piston rod 60a and supporting the reinforcing bar 7. The upper plane of the reinforcing bar supporting plate 59c protrudes outwards along the bottom surface of the reinforcing bar perforation 59b and is vertically arranged on the sawing fixed plate 59 sides.

The output shaft of the clamping reduction motor 61 is connected to the sawing screw shaft 58, and the two ends of the sawing screw shaft 58 are hinged on one end of a pair of symmetrical sawing screw shaft brackets 59a, and the other end of the sawing screw shaft bracket 59a is fixed. On the side of the sawing fixed plate 59 output reinforcing bar 7, the two ends of the sawing screw shaft 58 are the opposite screw threads, and the outside is equipped with the same square structure respectively on the opposite screw threads of the sawing screw shaft 58. A pair of nut clamping blocks 57; the symmetrical two outer sides of the nut clamping block 57 are respectively provided with two limiting rotating plates 59d which limit its rotation and are symmetrical in position, and the limiting rotating plates 59d are fixed on the sawing screw shaft On the bracket 59a; the lower end of the nut clamping block 57 is a splint for clamping the steel bar 7.

The clamping reduction motor 61 drives the sawing screw shaft 58 to rotate, and drives a pair of nut clamping blocks 57 to move towards each other, and the corresponding clamping plate at the lower end of the nut clamping block 57 is clamped on the reinforcing bar 7 output from the reinforcing bar perforation 59b.

The working process of the sawing device 70 is described as follows:

As shown in Figure 7, the telescopic rod 5a of the electric push rod 5 stretches out to pull the main frame 3, so that the steel bar 7 passes through the steel bar perforation 59b in the sawing device 70 in the main frame 3;

Compression electric cylinder 60 pushes piston rod 60a to compress steel bar 7 downward; at the same time, clamping reducer 61 drives sawing screw shaft 58 to rotate, and drives a pair of nut clamping blocks 57 to move to the middle, so that a pair of nut clamping blocks 57 The splint at the lower end clamps the steel bar 7; at the same time, the saw blade reducer 54 drives the saw blade 55 to rotate, and the elevator 50 drives the screw output shaft 50a to push the saw blade reducer motor fixing seat 53 along its axial direction and drives the saw blade reducer 54 and the saw blade 55 moves along the sawing guide shaft 52 to the axial direction of the vertical steel bar 7, and cuts off the steel bar 7;

After the steel bar 7 is cut off, the saw blade reducer 54 stops running, and the saw blade 55 stops rotating; the elevator 50 drives the screw output shaft 50a to move in the opposite direction of its axis, pulls the saw blade reducer motor fixing seat 53 and drives the saw blade reducer 54 and The saw blade 55 moves in the opposite direction along the sawing guide shaft 52; at the same time, the pressing electric cylinder 60 pulls the piston rod 60a to move upward, away from the steel bar 7; the clamping reducer 61 drives the sawing screw shaft 58 to reverse, driving the pair of nut clamps The tight block 57 moves to both sides along the sawing screw shaft 58, away from the reinforcing bar 7, and completes the working process of the sawing device.

Claims (9)

1. A kind of sawing and shearing integrated equipment, it is characterized in that, described sawing and shearing integrated equipment comprises: fixed base (1), on the upper top surface of fixed base (1), be provided with perpendicular to reinforcing bar conveying direction (P ) double track (2); a main frame (3) is supported on the double track (2), and a side surface of the main frame (3) is connected with a reciprocating drive mechanism; along the double track (3) inside the main frame (3) 2) A shearing device (40) and a sawing device (70) for cutting steel bars (7) are arranged side by side in the direction; the reciprocating drive mechanism drives the main frame (3) to drive the shearing device (40) and the sawing device (70) Moving back and forth along the double track (2), the steel bars (7) running through the main frame (3) are cut off with a shearing device (40) or a sawing device (70). 2. A kind of sawing and shearing integrated equipment according to claim 1, characterized in that, a plurality of support wheels (6) are arranged at the bottom of the main frame (3), and the plurality of support wheels (6) support the main machine The frame (3) rolls and slides on the double track (2); between the upper top surface of the fixed base (1) and the lower bottom surface, a waste collection vehicle (8) is arranged to collect and cut off the waste from the steel bar (7). The bottom of the cart (8) is provided with waste collection vehicle rollers (8a), and the waste collection vehicle rollers (8a) roll and slide on the lower track (1b) of the base, and the lower track (1b) of the base is arranged on the lower bottom surface of the fixed base (1) . 3. A kind of sawing and shearing integrated equipment according to claim 1, characterized in that, the reciprocating drive mechanism is an electric push rod (5), and the housing of the electric push rod (5) is hinged on the base bracket (1a), the bottom of the base support (1a) is fixed on the base (1); the telescopic rod end of the electric push rod (5) is hinged on the side of the main frame (3). 4. A kind of sawing and shearing integrated equipment according to claim 1, characterized in that, the shearing device (40) comprises: a fixed knife seat (16) installed on the main frame (3), installed Shear casing (13) on fixed knife seat (16) top; Be provided with the worm screw (14) that connects shear motor (9) and the worm wheel ( 20); the central hole of the worm wheel (20) is fixedly connected to the shaft on the top of the shear screw shaft (21), and the screw rod on the bottom of the shear screw shaft (21) is fitted in the internally threaded hole of the telescopic shaft (15), and the telescopic shaft (15) ) bottom is hinged to the top of the movable knife seat (30); the left and right sides of the fixed knife seat (16) are respectively equipped with a movable knife seat pressing plate (31); 31) and in the chute that fixed knife rest (16) forms; Fixed knife (28) and movable knife (29) are respectively housed in the bottom of fixed knife rest (16) and the bottom of movable knife rest (30), and fixed knife (28) and the gap between movable knife (29) have steel bar (7) to pass through; Spring return mechanism (80) is installed on movable knife seat (30). 5. A kind of sawing and shearing integrated equipment according to claim 4, characterized in that, the spring return mechanism (80) comprises: a pressing seat (27) whose shape is a "U"-shaped frame, The upper part of the inner side of the pressing seat (27) is slidingly equipped with a movable knife seat horizontal plate (30a), and the movable knife seat horizontal plate (30a) protrudes and is arranged on the upper side of the movable knife seat (30); on the inner side of the pressing seat (27) The lower end of the shearing guide shaft (22) is fixed at the bottom, and the upper end of the shearing guide shaft (22) passes through the through hole of the movable knife seat horizontal plate (30a) and is limited by fasteners on the upper end surface of the movable knife seat horizontal plate (30a). The through hole of the movable knife seat horizontal plate (30a) is slidingly matched with the shearing guide shaft (22); the shearing guide shaft (22) between the movable knife seat horizontal plate (30a) and the inner bottom of the pressing seat (27) A spring (24) is set on the outer diameter; the left and right outer sides of the pressing seat (27) are slidably fitted in the groove of the guide seat (25), and the two guide seats (25) are mirror-image symmetrically fixed on the fixed knife seat (16) superior. 6. A kind of sawing and shearing integrated equipment according to claim 4, characterized in that, the worm (14) is supported by bearings in the shearing box (13); One end of cutting casing (13) outside is equipped with driven sprocket (35), and chain (37) suits driven sprocket (35) and driving sprocket (38), and driving sprocket (38) connects shearing motor ( 9), the shearing motor (9) is fixed on the shearing motor holder (10), and the shearing motor holder (10) is fixed on the top of the shearing box loam cake (11). 7. A kind of sawing and shearing integrated equipment according to claim 1, characterized in that, the sawing device (70) comprises: a sawing fixed plate (59), a saw blade (55) equipped with A sheet geared motor (54) and an extruding and clamping device (71) for clamping the steel bar (7); the sawing fixing plate (59) is fixed on the inner side of the main frame (3) along the direction perpendicular to the steel bar conveying direction (P), A reinforcing bar perforation (59b) is provided on the sawing fixed plate (59), and an extruding clamping device (71) is arranged on the side of the output steel bar (7) of the sawing fixed plate (59); (54) is arranged on the saw blade reduction motor fixing seat (53) adjacent to the extrusion clamping device (71), and the saw blade (55) is installed on the saw blade reduction motor (54) along the direction perpendicular to the steel bar conveying direction (P). On the motor output shaft (54a); the rear part of the saw blade reduction motor fixing seat (53) is slidingly fitted on the sawing guide shaft (52), and the two ends of the sawing guide shaft (52) are respectively fixed on the main frame (3) Top; the left side of the saw blade reduction motor fixing seat (53) is connected to the screw output shaft (50a) of the elevator (50), the elevator (50) housing is installed on one end of the elevator fixing seat (51), and the elevator fixing seat (51 ) the other end is fixed on the main frame (3). 8. A kind of sawing and shearing integrated equipment according to claim 7, characterized in that, the two ends of the sawing guide shaft (52) are respectively fixed on one end of the elevator fixing seat (51) and the guiding shaft fixing seat One end of (56), the other end of the elevator fixing seat (51) and the other end of the guide shaft fixing seat (56) are respectively fixed on the symmetrical end of the two sides of the main frame (3a), and the other end of the two sides of the main frame (3a) is fixed on the main frame on the rack (3). 9. The sawing and shearing integrated equipment according to claim 7, characterized in that, the pressing and clamping device (71) comprises: a pressing electric cylinder (60) that presses the steel bar (7) from the upper part ) and the clamping reduction motor (61) that extrudes the reinforcing bar (7) from both sides; the described compacting electric cylinder (60) is fixed on the side of the output reinforcing bar (7) of the sawing fixed plate (59), and compresses the electric cylinder (60) The piston rod (60a) of the cylinder (60) stretches out downwards and can press down the steel bar (7) output from the steel bar perforation (59b); at the steel bar outlet end of the steel bar perforation (59b), a cylinder corresponding to the position of the piston rod (60a) is set. And support the steel bar supporting plate (59c) of reinforcing bar (7), the upper plane of reinforcing bar supporting plate (59c) protrudes outward along the bottom surface of reinforcing bar perforation (59b) and is vertically arranged on the side of sawing fixed plate (59); The output shaft of the clamping reduction motor (61) is connected to the sawing screw shaft (58), and the two ends of the sawing screw shaft (58) are hinged on one end of a pair of symmetrical sawing screw shaft brackets (59a), sawing The other end of screw shaft support (59a) is fixed on the side of sawing fixed plate (59) output reinforcing bar (7), and the two ends of sawing screw shaft (58) are helical threads opposite in rotation direction, and sawing screw shaft ( 58) On the opposite threaded threads, the outside is equipped with a pair of nut clamping blocks (57) with the same square structure; the symmetrical two outer sides of the nut clamping block (57) are respectively provided with a screw to limit its rotation and Two limit rotation plates (59d) of position symmetry, the limit rotation plate (59d) is fixed on the sawing screw shaft support (59a); the lower end of the nut clamp block (57) is a splint for clamping the reinforcing bar (7).