CN203834950U - Steel bar binding machine - Google Patents

Abstract

The utility model discloses a steel bar binding machine, which comprises a machine head, a casing, a transmission system and a wire feeding system fixed inside the casing, a wire cutting system and a twisting system. The segment structure includes at least the driving shaft and the driven shaft, and the twisting system also includes a slipping device for connecting the driving shaft and the driven shaft; when the transmission torque between the driving shaft and the driven shaft exceeds the slipping torque of the slipping device , the transmission of the driving shaft and the driven shaft is disengaged; in the steel bar binding machine of the present invention, the twisted shaft is designed into at least two-stage structure and a slipping device is added, and the driving shaft and the driven shaft are connected by the slipping device, when the driving shaft When the torque transmitted between the driven shaft and the driven shaft exceeds the preset slipping torque of the slipping device, the slipping device will slip, so that the driven shaft will stop rotating and the twisting process will be stopped to achieve the effect of controlling the torque and preventing the wire from being twisted. Reduce the labor load of workers, improve work efficiency and ensure work safety.

Description

Rebar binding machine

technical field

The utility model relates to a binding machine, in particular to a steel bar binding machine.

Background technique

At present, iron wires and other wires are usually required to bind and position the steel frame on the construction site. Now this work is mainly done by manual operation. This manual operation has the following problems: low binding efficiency, inconvenient operation, non-standard binding, waste of binding use steel wire. Therefore, a steel wire binding machine has appeared on the market, which includes a machine head, a housing, a transmission system, and a wire feeding system, a wire cutting system, and a twisting system fixed inside the housing; the machine head is generally in the shape of a "C" A groove for positioning the steel frame is formed, and the iron wire passes through the deformation mechanism in the machine head (that is, the arc-shaped guide wire through hole) to bundle the steel frame in an arc-shaped surrounding manner; the shell is a shell that is fixedly connected and protects various components; The transmission system uses the cooperation of transmission shafts, bushings, gears and bearings to realize the regular movement of other systems. For automatic steel bar binding machines, the transmission system is generally driven by the battery in the housing and controlled by the control circuit to achieve regular movement; the wire feeding system The iron wire is continuously conveyed to the machine head, the wire cutting system cuts the iron wire in the wire feeding channel, and the twisting system twists the wound iron wire to complete the binding. The twisting system includes a twisting shaft and a twisting head connected to the twisting shaft. There is a fork on the twisting head. When binding is required, the iron wire passes through the fork from the machine head to wind the steel skeleton, and the twisting shaft rotates. At the same time, it drives the twisting head to rotate to realize twisting. During the twisting process, the torque increases continuously, so the iron wire is often broken due to excessive torque. Especially for manual steel bar binding machines, it is difficult for workers to control the appropriate torque. After the iron wire is twisted, it can only be tied again. Cause duplication of work, reduce operating efficiency, and even safety accidents may occur when the iron wire is in a half-twisted state.

Therefore, just need a kind of steel bar binding machine, make it be able to control the torsion force in the twisting process, prevent iron wire from twisting off, reduce worker's labor, improve operation efficiency, guarantee operation safety.

Utility model content

In view of this, the purpose of the utility model is to provide a steel bar binding machine, which can control the torque in the twisting process, prevent the wire from being twisted, reduce the labor of workers, improve the working efficiency and ensure the working safety.

The steel bar binding machine of the utility model includes a machine head, a casing, a transmission system and a wire feeding system, a wire cutting system and a twisting system fixed inside the casing, the twisting system includes a twisting shaft, and the twisting system includes a twisting shaft. The shaft is a segmented structure and at least includes a driving shaft and a driven shaft, and the twisting system also includes a slipping device for connecting the driving shaft and the driven shaft; when the driving shaft and the driven shaft are connected When the transmission torque exceeds the slipping torque of the slipping device, the transmission of the driving shaft and the driven shaft is disengaged.

Further, the slipping device includes a driving disc, a driven disc, balls and an elastic mechanism, the driving disc is fixed at the tail end of the driving shaft, and the driven disc is fixed at the head end of the driven shaft, so The driven plate is provided with a first limiting hole corresponding to the ball on the upper end surface and a pre-tightening hole connected to the first limiting hole, and the lower end surface of the driving plate is provided with a hole corresponding to the ball. The second limiting hole, the ball snaps into the first limiting hole and the second limiting hole to connect the driving disc and the driven disc, the elastic mechanism is installed in the pre-tightening hole and The balls create a preload.

Further, the elastic mechanism includes an adjusting screw and a spring I, the adjusting screw is threadedly connected to the driven plate through the pre-tightening hole, and both ends of the spring I abut against the adjusting screw and the ball respectively.

Further, the transmission system includes a rack protruding from the top of the housing, a twisting transmission mechanism, a wire feeding transmission mechanism and a wire cutting transmission mechanism fixed inside the housing and cooperating with the rack for transmission; The length direction of the rack is parallel to the axial direction of the twisted shaft; the wire feeding transmission mechanism drives the wire feeding system to move the iron wire to the machine head, and the wire cutting transmission mechanism drives the shearing The wire system moves to cut the iron wire, and the twisting transmission mechanism drives the twisting system to move to twist the iron wire; the twisting transmission mechanism, wire feeding transmission mechanism and wire cutting transmission mechanism are arranged in sequence from top to bottom;

The wire feeding system includes a wire reel for winding iron wire, a wire feed wheel for driving the iron wire to move, and a wire guide block for guiding the iron wire into the machine head. The wire reel is rotatably connected to the inner wall of the housing , the wire feed rolls include active wire feed rolls and passive wire feed rolls that mesh with each other, and the outer circumferential surfaces of the active wire feed rolls and the passive wire feed rolls are respectively provided with annular wire feed grooves that match the diameter of the iron wire ; The wire feeding transmission mechanism includes a spur gear I and a transmission shaft I for connecting the spur gear I and the active wire feeding wheel, and the spur gear I is meshed with the rack for transmission; the wire feeding wheel and the wire feeding wheel A one-way bearing I is arranged between the transmission shafts I, so that when the rack moves downward, it drives the wire feed wheel to rotate, and when it moves upward, the transmission shaft I idles; the iron wire passes through the active wire feed wheel and The meshing point of the passive wire feed roller is guided into the machine head from the guide wire channel of the guide wire block;

The wire cutting system includes a fixed plate, a cam I, a wire cutter and a spring II, and the wire cutting transmission mechanism includes a spur gear II and a transmission shaft II for connecting the spur gear II and the cam I, and the cam I There is a one-way bearing II between the transmission shaft II, so that when the rack moves downward, it drives the cam I to rotate, and when it moves upward, the transmission shaft II idles; the fixed plate is fixed on the housing The inner wall, the tail of the wire cutter is hinged on the fixed plate, and the two ends of the spring II abut against the inner wall of the housing and the cutter head of the wire cutter respectively; the wire guide block There is a wire cutting groove vertically connected with the guide wire channel, the cutter head of the wire cutter is facing the wire cutting groove, and with the rotation of the cam I, the cutter head of the wire cutter goes in and out of the The wire cutting groove is used to cut the wire;

The twisting system also includes a bevel gear I, a bevel gear II, a twisting head and a stop mechanism, and the twisting transmission mechanism includes a spur gear III and a transmission shaft III for connecting the spur gear III and the bevel gear I, The bevel gear II is connected to the upper end of the drive shaft, the bevel gear I and bevel gear II are meshed for transmission, and the twisting head is connected to the end of the driven shaft and twisted with the rotation of the driven shaft The iron wire is formed to form a binding wire; the stopper mechanism includes a cam II fixed on the driven shaft and a stopper for blocking the one-way movement of the cam II, and the stopper is opposite to the one-way movement of the cam II The resistance is greater than the slipping torque of the slipping device, so that when the rack moves upwards, it drives the driven shaft to rotate, and when it moves downwards, the transmission of the driving shaft and the driven shaft is disengaged.

Further, the blocking member is a torsion spring, and the torsion arm at one end of the torsion spring is arranged in the movement track of the convex part of the cam II, and the two ends of the convex part are straight and arc-shaped respectively, and the When the rack moves upward, the straight surface intersects the torsion arm, and when the rack moves downward, the arc intersects the torsion arm.

Further, both sides of the rack are provided with teeth, and the front teeth of the rack mesh with the spur gear III for transmission, and the rear teeth of the rack mesh with the spur gear I and spur gear II successively for transmission.

Further, the steel bar binding machine is a mechanical manual binding machine, a handle is connected to the top of the rack, and a spring III for reset is provided between the handle and the housing.

Further, the steel bar binding machine also includes a balance shaft protruding from the top of the housing and parallel to the rack, the top of the balance shaft is connected to the handle so that the balance shaft can be aligned with the rack synchronized movement.

Beneficial effects of the utility model: In the steel bar binding machine of the utility model, the twisted shaft is designed into at least two-stage structure and a slipping device is added, and the driving shaft and the driven shaft are connected by the slipping device. When the transmission torque between the slipping device exceeds the preset slipping torque of the slipping device, the slipping device will slip, so that the transmission between the driving shaft and the driven shaft will be disengaged, the driven shaft will stop rotating, the twisting process will be stopped, and the control will be achieved. The effect of torsion can prevent the iron wire from being twisted due to excessive torsion, reduce the labor load of workers, improve operation efficiency, and ensure operation safety; the utility model has a simple structure and is easy to use, and is especially suitable for manual mechanical steel bar binding machines.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the front view of the utility model;

Fig. 2 is the left view of the utility model;

Figure 3 is an enlarged view of A in Figure 1;

Detailed ways

Fig. 1 is a front view of the utility model, Fig. 2 is a left view of the utility model, Fig. 3 is an enlarged view of A place in Fig. 1, as shown in the figure: the steel bar binding machine of the present embodiment includes a head 1, a shell Body 2, a transmission system and a wire feeding system, a wire cutting system and a twisting system fixed inside the housing 2, the twisting system includes a twisted shaft, and the twisted shaft is a segmented structure and at least includes a driving shaft 511 and the driven shaft 512, the twisting system also includes a slipping device for connecting the driving shaft 511 and the driven shaft 512; when the transmission moment between the driving shaft 511 and the driven shaft 512 exceeds the When the slipping moment of the slipping device is reached, the driving shaft 511 is disengaged from the transmission of the driven shaft 512; the twisted shaft is designed to be at least a two-stage structure and a slipping device is added, and the driving shaft 511 and the driven shaft 512 are connected by the slipping device , when the transmission torque between the driving shaft 511 and the driven shaft 512 exceeds the preset slipping torque of the slipping device, the slipping device will slip, thereby disengaging the transmission between the driving shaft 511 and the driven shaft 512, so that The driven shaft 512 stops rotating, stops the twisting process, and achieves the effect of controlling the torsion, prevents the iron wire from being twisted due to excessive torsion, reduces the labor load of workers, improves operation efficiency, and ensures operation safety.

In this embodiment, the sliding device includes a driving disc 521, a driven disc 522, a ball 523 and an elastic mechanism, the driving disc 521 is fixed on the tail end of the driving shaft 511, and the driven disc 522 is fixed on the The head end of the driven shaft 512, the driven plate 522 is provided with a first limiting hole 522a located on the upper end surface and corresponding to the ball 523 and a pre-tightening hole 522b communicating with the first limiting hole 522a , the lower end surface of the driving disc 521 is provided with a second limiting hole 521a corresponding to the ball 523, and the ball 523 snaps into the first limiting hole 522a and the second limiting hole 521a to connect the The driving disc 521 and the driven disc 522, the elastic mechanism is installed in the pre-tightening hole 522b and forms a pre-tightening force on the ball 523; the driving disc 521 and the driven disc 522 can be discs or The square plate is not limited here; the driving plate 521 and the driven plate 522 are fixed at the junction of the driving shaft 511 and the driven shaft 512; the ball 523 can use wear-resistant steel balls; the first limiting hole 522a, the second limiting hole The positioning holes 521a are arranged correspondingly, and are preferably concave spherical holes uniformly arranged in the circumferential direction respectively, and the number is four; as shown in Figure 3, the elastic mechanism forms an upward pressure on the ball 523, and the ball 523 is stuck in the first position-limiting hole 522a and the second limiting hole 521a form a locking force, which is the slipping torque of the slipping device; when the transmission torque between the driving shaft 511 and the driven shaft 512 exceeds the slipping torque, the ball 523 Break away from the second limit hole 521a, so that the driving disc 521 and the driven disc 522 slip; when the transmission torque between the driving shaft 511 and the driven shaft 512 decreases, the driving disc 521 rotates at a certain angle and the ball 523 locks into the lower A second limiting hole 521a completes the reset.

In this embodiment, the elastic mechanism includes an adjustment screw 524a and a spring I 524b, the adjustment screw 524a is screwed to the driven plate 522 through the pre-tightening hole 522b, and the two ends of the spring I 524b respectively abut against the The adjustment screw 524a and the ball 523 are described above; the spring I 524b is a compression spring; the different extension lengths of the adjustment screw 524a in the pre-tightening hole 522b form different degrees of compression on the spring I 524b, thereby adjusting the slipping torque of the slipping device and making the slipping torque controllable , to enhance the applicable effect; the adjusting screw 524a is preferably a fine threaded screw to realize fine adjustment and make the adjustment more precise.

In this embodiment, the transmission system includes a rack 61 protruding from the top of the housing 2, a twisting transmission mechanism fixed inside the housing 2 and cooperating with the rack 61, and a wire feeding drive. Mechanism and wire cutting transmission mechanism; the rack 61 is in the shape of a long plate, and the top of the housing 2 is provided with a hole for the rack 61 to enter and exit, and a rack seat is arranged on the hole; the length direction of the rack 61 is parallel to the The axial direction of the twisted shaft; the wire feeding transmission mechanism drives the wire feeding system to move the iron wire to the machine head 1, the wire cutting transmission mechanism drives the wire cutting system to cut the iron wire, and the twist The twisting transmission mechanism drives the twisting system to move to twist the iron wire; the twisting transmission mechanism, wire feeding transmission mechanism and wire cutting transmission mechanism are arranged in sequence from top to bottom; the up and down directions here are relative , are all subject to the direction shown in the accompanying drawings; the wire feeding system includes a wire reel 31 for winding the iron wire, a wire feeding wheel for driving the iron wire to move and a wire guide block for introducing the iron wire into the machine head 1 33, the wire reel 31 is rotatably connected to the inner wall of the housing 2, and the wire feed wheel includes an active wire feed wheel 32a and a passive wire feed wheel 32b that mesh with each other, and the active wire feed wheel 32a and the passive wire feed wheel 32b are respectively provided with ring-shaped wire feeding slots matching the diameter of the iron wire; the wire feeding transmission mechanism includes a spur gear I631 and a drive shaft I632 for connecting the spur gear I631 and the driving wire feed wheel 32a , the spur gear I631 is meshed with the rack 61 for transmission; a one-way bearing I633 is provided between the driving wire feed wheel 32a and the transmission shaft I632, so that the rack 61 drives the When the wire feed roller rotates and moves upward, the transmission shaft I 632 idles; the iron wire passes through the meshing point of the active wire feed roller 32a and the passive wire feed roller 32b and is guided into the machine from the wire guide channel of the wire guide block 33 Head 1; the wire cutting system includes a fixed plate 41, a cam I42, a wire cutter 43 and a spring II44, and the wire cutting transmission mechanism includes a spur gear II641 and a transmission shaft II642 for connecting the spur gear II641 and the cam I42 A one-way bearing II 643 is provided between the cam I 42 and the transmission shaft II 642, so that the rack 61 drives the cam I 42 to rotate when it moves downward, and the transmission shaft II 642 idles when it moves upward; the fixed The plate 41 is fixed on the inner wall of the housing 2, the tail of the wire cutter 43 is hinged on the fixed plate 41, and the two ends of the spring II 44 are respectively connected to the inner wall of the housing 2 and the wire cutter. 43 butt against the cutter head; the wire guide block 33 is provided with a wire cutting groove vertically connected with the wire guide channel, and the cutter head of the wire cutter 43 is facing the wire cutting groove, and the cam The rotation of I42, the cutter head of the wire cutter 43 enters and exits the wire cutting groove to cut the iron wire; the twisting system also includes bevel gear I52, bevel gear II53, twisting head 54 and stop mechanism, the twisting system The transmission mechanism includes a spur gear III 651 and a transmission shaft III 652 for connecting the spur gear III 651 and the bevel gear I 52, and the bevel gear II 53 is connected to Connected to the upper end of the driving shaft 511, the bevel gear I52 and the bevel gear II53 are meshed for transmission, and the twist head 54 is connected to the end of the driven shaft 512 and twists the iron wire as the driven shaft 512 rotates Form a binding line; the stopper mechanism includes a cam II 551 fixed on the driven shaft 512 and a blocking member 552 for blocking the one-way movement of the cam II 551, and the blocking member 552 is opposite to the movement of the cam II 551 The one-way resistance is greater than the slipping torque of the slipping device, so that the rack 61 drives the driven shaft 512 to rotate when moving upward, and the drive shaft 511 and the driven shaft 512 are disengaged when moving downward.

The binding process of this steel bar binding machine is: when the rack 61 is at the upper limit position, it does not contact with the spur gear III 651, spur gear I 631, and spur gear II 641; when the rack 61 starts to move downward, it first contacts with the spur gear III 651 The meshing transmission drives the twisted shaft to rotate, but because the cam II 551 bears the one-way resistance of the blocking member 552, the slippery device slips, the driven shaft 512 does not rotate, and the twisted head 54 remains stationary; the rack 61 continues to move downward and Mesh transmission with spur gear Ⅰ631, the wire feed wheel rotates and continuously feeds the iron wire into machine head 1; the rack 61 continues to move downward and meshes with the spur gear Ⅱ641 to drive the cam Ⅰ42 to rotate, when the rack 61 is at the lower limit position , the wire cutter 43 just cuts the iron wire (the distance between the spur gear I631 and the spur gear II641 can make the length of the iron wire meet the use requirements); then, the rack 61 moves upward, due to the action of the one-way bearing I633 and the one-way bearing II643 , the wire feed wheel and the cam I42 do not rotate; at this time, due to the weakening or elimination of the one-way resistance of the blocking member 552 to the cam II 551, the driving shaft 511 drives the driven shaft 512 to rotate, and the twisting head 54 twists and knots the iron wire to complete Binding; the wire feeding system converts the manual linear motion into the rotary motion required for wire feeding through the rack and pinion mechanism to realize the automatic feeding of the iron wire. When the wire winding is completed, the wire cutting system realizes automatic cutting;

In this embodiment, the blocking member 552 is a torsion spring, and the torsion arm at one end of the torsion spring is set in the movement track of the convex part of the cam II 551, and the two ends of the convex part are straight and arc respectively. When the rack 61 moves upward, it intersects the torsion arm with the straight face, and when the rack 61 moves downward, it intersects the torsion arm with the arc surface; one end of the torsion spring is fixed on the shell The inner wall of the body 2 and the other end are used to limit the movement of the cam II 551; when the straight face of the cam II 551 contacts the torsion arm, strong resistance is generated, which is enough to limit the rotation of the cam II 551; when the arc surface of the cam II 551 contacts the torsion arm, it can slide smoothly. The resistance is greatly reduced, so that the cam II 551 rotates normally to complete the twisting.

In this embodiment, both sides of the rack 61 are provided with teeth, and the front teeth of the rack 61 mesh with the spur gear III 651 for transmission, and the back teeth of the rack 61 engage with the spur gear I 631 and the spur gear II 641 successively. Mesh transmission; the rack 61 has a double-sided tooth shape, so that the axis of the spur gear III 651 is not in the plane formed by the axes of the spur gear I 631 and the spur gear II 641, the layout is more reasonable, and it is beneficial to reduce the complexity of the machine.

In this embodiment, the steel bar binding machine is a mechanical manual binding machine, a handle 62 is connected to the top of the rack 61, and a spring III 66 for reset is provided between the handle 62 and the housing 2; 61 is driven by manpower to automatically and coherently convert the simple manual push and pull movement into a series of actions required for steel bar binding; the handle 62 is easy to push and pull, which enhances the comfort of operation; spring III 66 is a compression spring, which can automatically reset the rack 61 , reduce the workload of workers and improve work efficiency; this steel bar binding machine is a mechanical manual binding machine, which has a simple structure, low cost, and can get rid of the dependence on electric energy, and its scope of application is wider.

In this embodiment, the steel bar binding machine also includes a balance shaft 67 extending from the top of the housing 2 and parallel to the rack 61. The top of the balance shaft 67 is connected to the handle 62, so that the The balance shaft 67 can move synchronously with the rack 61 ; the balance shaft 67 is beneficial to enhance the flexibility of the rack 61 .

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (8)

1. a reinforcing-bar binding machine, comprise head, housing, transmission system and be fixed on described enclosure interior wire feed system, cut a system and twisting system, described twisting system comprises twisted axis, it is characterized in that: described twisted axis is that segmentation structure also at least comprises driving shaft and driven shaft, and described twisting system also comprises the slipping device for connecting described driving shaft and driven shaft; In the time that the carry-over moment between described driving shaft and driven shaft exceedes the slipping torque of described slipping device, the transmission of described driving shaft and driven shaft is thrown off.

2. reinforcing-bar binding machine according to claim 1, it is characterized in that: described slipping device comprises driving disc spacing pressing, clutch plate, ball and elastic mechanism, described driving disc spacing pressing is fixed on the tail end of described driving shaft, described clutch plate is fixed on the head end of described driven shaft, described clutch plate is provided with and is positioned at upper surface first spacing hole corresponding with described ball and the pre-tieholen being communicated with described the first spacing hole, the lower surface of described driving disc spacing pressing is provided with second spacing hole corresponding with described ball, described ball snap in described the first spacing hole with the second spacing hole to be connected described driving disc spacing pressing and clutch plate, described elastic mechanism is arranged in described pre-tieholen and to described ball and forms pretightning force.

3. reinforcing-bar binding machine according to claim 2, it is characterized in that: described elastic mechanism comprises adjusting screw(rod) and spring I, described adjusting screw(rod) is threaded with described clutch plate by described pre-tieholen, and described spring I two ends are connected to respectively described adjusting screw(rod) and ball.

4. according to the reinforcing-bar binding machine described in any one in claims 1 to 3, it is characterized in that: described transmission system comprises the tooth bar stretching into from described housing top and is fixed on described enclosure interior and coordinates twisting transmission mechanism, the wire-feeding transmission mechanism of transmission with described tooth bar and cut a transmission mechanism; The length direction of described tooth bar is parallel to the axial of described twisted axis; Described wire-feeding transmission mechanism drives described wire feed system to move iron wire is delivered to described head, described in cut a thread transmission mechanism and cut a system motion to cut off iron wire described in driving, described twisting transmission mechanism drives described twisting system motion with twisting iron wire; Described twisting transmission mechanism, wire-feeding transmission mechanism and cut a transmission mechanism and set gradually from top to bottom;

Described wire feed system comprises wire tray for being wound around iron wire, for driving the wire feed rolls of iron wire motion and for iron wire being imported to the seal wire piece of described head, described wire tray is rotatably connected on described inner walls, described wire feed rolls comprises intermeshing active wire feed rolls and passive reeling wheel, on the outer circumference surface of described active wire feed rolls and passive reeling wheel, is respectively equipped with the annular wire feeding trough suitable with iron wire diameter; Described wire-feeding transmission mechanism comprise spur gear I with for being connected described spur gear I and the power transmission shaft I of wire feed rolls initiatively, described spur gear I and described tooth bar engaged transmission; Between described wire feed rolls and described power transmission shaft I, be provided with unilateral bearing I, when described tooth bar is moved downward, drive the rotation of described wire feed rolls, while moving upward described in the idle running of power transmission shaft I; Iron wire passes the meshing point of described active wire feed rolls and passive reeling wheel and imports described head from the silk guide passage of described seal wire piece;

A described system of cutting comprises fixed head, cam I, cuts a cutter and spring II, a described transmission mechanism of cutting comprises spur gear II and power transmission shaft II for being connected described spur gear II and cam I, between described cam I and described power transmission shaft II, be provided with unilateral bearing II, when described tooth bar is moved downward, drive the rotation of described cam I, while moving upward described in the idle running of power transmission shaft II; Described fixed head is fixed on described inner walls, described in cut a cutter cutter tail be hinged on described fixed head, the two ends of described spring II respectively with described inner walls and described in cut the cutter head butt of a cutter; On described seal wire piece, offer and the vertical chopping groove communicating of described silk guide passage, described in cut a cutter cutter head just to described chopping groove, with the rotation of described cam I, described in cut a cutter cutter head pass in and out described chopping groove to cut off iron wire;

Described twisting system also comprises bevel gear I, bevel gear II, strand head and stop mechanism, described twisting transmission mechanism comprises spur gear III and power transmission shaft III for being connected described spur gear III and bevel gear I, described bevel gear II is connected to described driving shaft upper end, described bevel gear I and bevel gear II engaged transmission, described strand head is connected to described driven shaft end and twisting iron wire forms bounding wire along with the rotation of described driven shaft; Described stop mechanism comprises the cam II that is fixed on described driven shaft and for stopping the block piece of described cam II one-way movement, described block piece is greater than the slipping torque of described slipping device to the unidirectional resistance of described cam II, when described tooth bar is moved upward, drive the rotation of described driven shaft, while moving downward described in the transmission disengagement of driving shaft and driven shaft.

5. reinforcing-bar binding machine according to claim 4, it is characterized in that: described block piece is torsion spring, one end of described torsion spring is turned round arm and is located in the movement locus of described cam II bossing, the both ends of the surface of described bossing are respectively to be faced directly and arc surface, when described tooth bar moves upward, face directly with described to turn round arm crossing with described, when described tooth bar moves downward with described arc surface with described in to turn round arm crossing.

6. reinforcing-bar binding machine according to claim 5, is characterized in that: the two-sided tooth that is equipped with of described tooth bar, and described tooth bar is with front teeth and described spur gear III engaged transmission, and with back side tooth and described spur gear I, successively engaged transmission of spur gear II.

7. reinforcing-bar binding machine according to claim 6, is characterized in that: described reinforcing-bar binding machine is manipulator dynamic formula strapper, and described tooth bar top is connected with handgrip, is provided with the spring III for resetting between described handgrip and housing.

8. reinforcing-bar binding machine according to claim 7, it is characterized in that: described reinforcing-bar binding machine also comprises from described housing top and stretching into and the trunnion shaft parallel with described tooth bar, described trunnion shaft top connects described handgrip, and described trunnion shaft can be moved with described rack synchronous.