CN114951490A - Bending machine - Google Patents

Abstract

The invention is suitable for the field of steel bar processing, and provides a bending machine which comprises a base and symmetrically arranged support rods fixedly arranged on the base, wherein a workbench is fixed on the support rods, and a clamping mechanism for fixing steel bars is arranged on the workbench; be provided with adjustment mechanism on the base, the base with be provided with on the workstation with the intermittent drive mechanism that adjustment mechanism connects, intermittent drive mechanism is last to be fixed with accepts the board, it is fixed with the leading wheel No. two on the board to accept, accept and to have seted up the spout on the board, accept to be fixed with the cylinder on the board, sliding mounting in the spout with cylinder fixed connection's sliding block, be fixed with the spacing wheel on the sliding block, still be provided with on the base with the drive assembly that intermittent drive mechanism connects, drive assembly passes through the drive of intermittent drive mechanism accept the board and rotate, still can pass through adjustment mechanism changes intermittent drive mechanism's movement track.

Description

Bending machine

Technical Field

The invention belongs to the field of steel bar processing, and particularly relates to a bending machine.

Background

In the building site, need bend the reinforcing bar that is certain angle with straight reinforcing bar usually to increase the application range of reinforcing bar, at present, the reinforcing bar is at the in-process of buckling, all needs the human operation usually, and this kind of mode is inefficient, and can lead to personnel to be injured, when needing to buckle the thick reinforcing bar of diameter in the face, then need use the reinforcing bar bender.

The bending machine is important equipment for bending and forming workpieces in the building industry, and is used for bending reinforcing steel bars into parts with various angles according to process requirements.

And these angle benders can only bend the reinforcing bar to fixed angle when using, can't adjust the size of the angle of bending according to the demand, consequently can't satisfy the user demand, consequently provide a bender.

Disclosure of Invention

The invention provides a bending machine, and aims to solve the problem that the bending angle cannot be adjusted in the conventional bending machine.

The invention is thus achieved, a bending machine comprising:

the steel bar fixing device comprises a base and symmetrically arranged support rods fixedly arranged on the base, wherein a workbench is fixed on the support rods, and a clamping mechanism for fixing steel bars is arranged on the workbench;

be provided with adjustment mechanism on the base, the base with be provided with on the workstation with the intermittent drive mechanism that adjustment mechanism connects, intermittent drive mechanism is last to be fixed with accepts the board, it is fixed with the leading wheel No. two on the board to accept, accept and to have seted up the spout on the board, accept to be fixed with the cylinder on the board, sliding mounting in the spout with cylinder fixed connection's sliding block, be fixed with the spacing wheel on the sliding block, still be provided with on the base with the drive assembly that intermittent drive mechanism connects, drive assembly passes through the drive of intermittent drive mechanism accept the board and rotate.

Furthermore, fixture includes fixed mounting and installs a leading wheel, rotation on the workstation are installed a lead screw, rotation on the workstation are installed on the workstation and with lead screw coaxial coupling's rotation handle, still be provided with on the workstation with the direction subassembly that a lead screw is connected.

Furthermore, the direction subassembly includes movable mounting on the lead screw and with a screw thread fit's a thread bush, fixed mounting on a thread bush fixed mounting on the workstation and with the guide rail of fixed block, still be fixed with the push pedal on a thread bush.

Furthermore, the adjusting mechanism comprises a fixed rod fixedly installed on the base, a supporting disk connected with the intermittent transmission mechanism is fixed on the fixed rod, a limiting component connected with the intermittent transmission mechanism is further arranged on the base, and the limiting component is connected with the supporting disk.

Further, spacing subassembly is including seting up multiunit through-hole, the fixed mounting that just is the circumference equidistance setting on the supporting disk and be a gag lever post of multiunit, setting that the circumference equidistance set up on the supporting disk and be in on the base and with the dead lever with bearing structure that the supporting disk is connected, bearing structure is last be fixed with the multiunit with No. two gag lever posts of through-hole complex, No. one the gag lever post with No. two the gag lever posts with intermittent type drive mechanism connects.

Furthermore, the bearing structure includes movable mounting on the dead lever and with No. two gag lever post fixed connection's limiting plate, rotation are installed the base with No. two lead screws on the supporting disk, movable mounting on No. two lead screws and with No. two screw thread fit's No. two threaded sleeve, No. two threaded sleeve with limiting plate fixed connection.

Furthermore, intermittent type drive mechanism installs including rotating the cavity pole on the supporting disk, be fixed with the carousel on the cavity pole, rotate on the supporting disk and install and arrange in dwang in the cavity pole, be provided with on the base with the carousel with the meshing subassembly that the dwang is connected, the dwang with accept board fixed connection.

Furthermore, the meshing component comprises a ratchet wheel fixedly arranged on the rotating rod, a ratchet wheel which is rotatably arranged on the rotating disc and is intermittently meshed with the ratchet wheel, and a torsion spring which is sleeved on a rotating shaft of the ratchet wheel and is fixedly connected with the rotating disc.

Further, drive assembly includes fixed mounting and is in motor on the base, rotate and install the base with transfer line, cover on the workstation are established on the transfer line and with the belt that the cavity pole is connected, the transfer line with motor output shaft is connected.

Compared with the prior art, the invention has the beneficial effects that:

when using, put the reinforcing bar that will need processing in fixture, under fixture's effect, it is fixed with the reinforcing bar, the one end of reinforcing bar this moment is located with No. two leading wheel butt positions, according to the diameter of reinforcing bar, slide in the spout through cylinder drive sliding block, and drive spacing wheel towards No. two leading wheel direction motions, until spacing wheel and reinforcing bar butt, again according to the required angle of bending of reinforcing bar, the motion of drive adjustment mechanism, the drive assembly motion this moment, and the motion of drive intermittent drive mechanism, thereby the drive accepts the board and rotates, and under No. two leading wheels and spacing wheel's effect, bend the reinforcing bar, this application can be according to the reinforcing bar demand, freely adjust the angle that the reinforcing bar was bent.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic diagram of the structure provided by the present invention.

Fig. 2 is a schematic structural diagram of a first angle provided by the present invention.

Fig. 3 is an enlarged schematic view of the structure at a in fig. 2.

Fig. 4 is a schematic view of a second angular structure provided by the present invention.

Fig. 5 is a schematic view of the connection relationship between the adjusting mechanism and the intermittent transmission mechanism provided by the invention.

Fig. 6 is an exploded view of the adjusting mechanism and intermittent drive mechanism provided by the invention.

Fig. 7 is a schematic diagram of an exploded structure of the clamping mechanism provided by the present invention.

Fig. 8 is a schematic diagram of a partial explosion structure provided by the present invention.

Reference numerals:

1. a base; 2. a support bar; 3. a work table; 4. a first guide wheel; 5. rotating the handle; 6. a first screw rod; 7. a first threaded sleeve; 8. a fixed block; 9. a guide rail; 10. pushing the plate; 11. a motor; 12. a transmission rod; 13. a belt; 14. fixing the rod; 15. a support disc; 16. a through hole; 17. a first limiting rod; 18. a limiting plate; 19. a second limiting rod; 20. a second screw rod; 21. a second threaded sleeve; 22. a hollow shaft; 23. a turntable; 24. a ratchet; 25. a torsion spring; 26. rotating the rod; 27. a ratchet wheel; 28. a second guide wheel; 29. a bearing plate; 30. a cylinder; 31. a slider; 32. and a limiting wheel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In order to effectively explain embodiments of the present invention, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The invention provides a bending machine, which aims to solve the problem that the bending angle cannot be adjusted by a traditional bending machine.

Referring to fig. 1 to 8, an embodiment of the present invention provides a bending machine, including:

the steel bar clamping device comprises a base 1 and supporting rods 2 which are fixedly installed on the base 1 and symmetrically arranged, a workbench 3 is fixed on the supporting rods 2, a clamping mechanism for fixing steel bars is arranged on the workbench 3, the clamping mechanism comprises a guide wheel 4 fixedly installed on the workbench 3, a lead screw 6 rotatably installed on the workbench 3, a rotating handle 5 rotatably installed on the workbench 3 and coaxially connected with the lead screw 6, and a guide assembly connected with the lead screw 6 is further arranged on the workbench 3, wherein the guide assembly comprises a threaded sleeve 7 movably installed on the lead screw 6 and in threaded fit with the lead screw 6, a fixed block 8 fixedly installed on the threaded sleeve 7, and a guide rail 9 fixedly installed on the workbench 3 and clamped with the fixed block 8, and a push plate 10 is also fixed on the first threaded sleeve 7.

Referring to fig. 1-4 and 7, it should be noted that the first guide wheel 4 is disposed in a hourglass-like shape, the first guide wheel 4 and the push plate 10 are disposed at the same horizontal plane, when a reinforcing steel bar needs to be processed, the reinforcing steel bar is disposed between the first guide wheel 4 and the push plate 10, and the rotating handle 5 is driven to rotate by manpower, so as to drive the first screw rod 6 coaxially connected therewith to rotate, so that the first threaded sleeve 7 moves, because the fixing block 8 and the guide rail 9 are in a clamping state, and the guide rail 9 and the first screw rod 6 are in a parallel position, the guide rail 9 has a guiding function, so that the first threaded sleeve 7 fixed with the fixing block 8 moves along the length direction of the first screw rod 6, and drives the push plate 10 to move towards the first guide wheel 4, when the push plate 10 and the first guide wheel 4 are both abutted against the reinforcing steel bar, the reinforcing steel bar is fixed between the push plate 10 and the first guide wheel 4, wherein, it is high to use the lead screw to carry out the driven purpose, can prevent that push pedal 10 from taking place hard interference with the reinforcing bar, leads to push pedal 10 to damage or the reinforcing bar takes place to buckle, and the lead screw transmission is comparatively laborsaving, and simultaneously, the lead screw has the effect of auto-lock, prevents that push pedal 10 from leading to separating with the reinforcing bar because of external force at the in-process of bending.

The base 1 is provided with an adjusting mechanism, the adjusting mechanism comprises a fixed rod 14 fixedly installed on the base 1, a supporting disk 15 connected with the intermittent transmission mechanism is fixed on the fixed rod 14, a limit component connected with the intermittent transmission mechanism is also arranged on the base 1, the limit component is connected with the supporting disk 15, wherein the limit component comprises a plurality of groups of through holes 16 which are arranged on the supporting disk 15 and are arranged in a circumference equidistance, a plurality of groups of first limit rods 17 which are fixedly installed on the supporting disk 15 and are arranged in a circumference equidistance, a supporting structure which is arranged on the base 1 and is connected with the fixed rod 14 and the supporting disk 15, a plurality of groups of second limit rods 19 matched with the through holes 16 are fixed on the supporting structure, the first limit rods 17 and the second limit rods 19 are connected with the intermittent transmission mechanism, the bearing structure mentioned above includes movable mounting be in on the dead lever 14 and with No. two gag lever post 19 fixed connection's limiting plate 18, rotate and install base 1 with No. two lead screws 20 on the supporting disk 15, movable mounting be in on No. two lead screws 20 and with No. two threaded sleeve 21 of No. two lead screws 20 screw-thread fit, No. two threaded sleeve 21 with limiting plate 18 fixed connection.

Referring to fig. 1-2 and 4-6, further, the number of the second limiting rods 19 is provided with five sets, the number of the through holes 16 is also provided with five sets, the number of the first limiting rods 17 is provided with three sets, the second limiting rods 19 and the first limiting rods 17 are all arranged in a circumferential equidistant manner, the distance between the second limiting rods 19 and the first limiting rods 17 is equal, the lengths of the five second limiting rods 19 are unequal and are sequentially reduced, in an initial state, the second threaded sleeve 21 is located at the maximum stroke position facing the direction of the base 1, at this time, the longest second limiting rod 19 and the first limiting rod 17 are located on the same horizontal plane and are in intermittent abutting joint with the intermittent transmission mechanism, the other four second limiting rods 19 are all located below the first limiting rods 17 and are not in contact with the intermittent transmission mechanism, when the movement stroke of the intermittent transmission mechanism needs to be adjusted, the second lead screw 20 rotates, and driving the second threaded sleeve 21 to move, so that the limit plate 18 moves along the length direction of the fixed rod 14, the fixed rod 14 has a guiding function, so that the limit plate 18 does not deflect when moving, so that the second threaded sleeve 21 moves along the length direction of the second lead screw 20, the limit plate 18 can also drive the second limit rod 19 to move, and the required second limit rod 19 is driven to move to the required height according to the required bending angle, at the moment, the second lead screw 20 stops rotating, wherein the adjustment of the bending angle is adjusted according to how many second limit rods 19 are in intermittent abutting joint with the intermittent transmission mechanism, so that the second limit rod 19 in abutting joint with the intermittent transmission mechanism is required to be driven to move to the same height as the first limit rod 17, the second lead screw 20 stops rotating, the position of the second limit rod 19 positioned in front of the second limit rod 19 is higher than the first limit rod 17, the position of the second limiting rod 19 behind the second limiting rod 19 is lower than that of the first limiting rod 17, so that the angle is adjusted, and meanwhile, the motion stroke of the second limiting rod 19 can be accurately controlled by using a screw rod for transmission.

Base 1 with be provided with on the workstation 3 with the intermittent drive mechanism that adjustment mechanism connects, be fixed with on the intermittent drive mechanism and accept board 29, it is fixed with guide wheel 28 No. two on the board 29 to accept, accept and seted up the spout on the board 29, it is fixed with cylinder 30 on the board 29 to accept, sliding fit in the spout have with cylinder 30 fixed connection's sliding block 31, be fixed with spacing wheel 32 on the sliding block 31, intermittent drive mechanism installs including rotating hollow rod 22 on the supporting disk 15, be fixed with carousel 23 on the hollow rod 22, rotating to install on the supporting disk 15 and arrange in dwang 26 in the hollow rod 22, be provided with on the base 1 with carousel 23 with the meshing subassembly that dwang 26 is connected, dwang 26 with accept board 29 fixed connection, wherein, the meshing subassembly includes fixed mounting ratchet 27, the last ratchet 27 of dwang 26, Ratchets 24 which are rotatably arranged on the rotary disc 23 and are intermittently meshed with the ratchet wheel 27, and torsion springs 25 which are sleeved on rotating shafts of the ratchets 24 and are fixedly connected with the rotary disc 23.

Referring to fig. 1-2, 4-6 and 8, further, one end of the ratchet 24 is engaged with the ratchet 27, the other end of the ratchet 24 is intermittently abutted against the first stop lever 17 and the second stop lever 19, in an initial state, the ratchet 24 is abutted against the first stop lever 17, the ratchet 24 is separated from the ratchet 27, the sliding block 31 is located at a maximum stroke away from the second guide wheel 28, when the steel bar is fixed between the first guide wheel 4 and the push plate 10, the steel bar is abutted against the second guide wheel 28, the sliding block 31 is driven by the air cylinder 30 to slide on the sliding chute, the stop wheel 32 is driven to move towards the second guide wheel 28, when the stop wheel 32 moves to a certain position, the driving assembly moves and drives the hollow rod 22 to rotate, so that the rotary disc 23 fixed on the hollow rod 22 rotates, the rotary disc 23 drives the ratchet 24 to rotate around the hollow rod 22, because the ratchet 24 and the ratchet 27 are in a separated state, the ratchet 27 cannot rotate at this time, and under the action of the first limiting rod 17, the ratchet 24 and the ratchet 27 are always in a separated state, when the ratchet 24 is separated from the first limiting rod 17 and is abutted against the second limiting rod 19, the ratchet 24 and the ratchet 27 are still in a separated state at this time, when the ratchet 24 is separated from the second limiting rod 19, under the action of the torsion spring 25, the ratchet 24 is driven to rotate around a rotating point and move to a position meshed with the ratchet 27, so that the ratchet 27 is driven to rotate, the rotating rod 26 also drives the bearing plate 29 to rotate and drives the second guide wheel 28 and the limiting wheel 32 to rotate, under the action of the second guide wheel 28 and the limiting wheel 32, the reinforcing steel bar is bent, wherein if only one second limiting rod 19 is abutted against the ratchet 24, the bending angle of the reinforcing steel bar is 180 degrees, when increasing a 19 quantity with No. two gag lever posts of 24 butts of ratchet at every turn, the angle of bending all can reduce 30 degrees to the accessible changes No. two gag lever posts 19's position, adjusts the angle that the reinforcing bar was bent, and the biggest angle that the reinforcing bar was bent is 180 degrees, sets up like this and takes place to interfere in order to prevent that the reinforcing bar from bending.

Still be provided with on the base 1 with the drive assembly that intermittent drive mechanism connects, drive assembly passes through the drive of intermittent drive mechanism accept board 29 and rotate, drive assembly includes fixed mounting and is in motor 11, the rotation on the base 1 is installed base 1 with transfer line 12, the cover on the workstation 3 are established on the transfer line 12 and with the belt 13 that cavity pole 22 is connected, transfer line 12 with motor 11 output shaft is connected.

Referring to fig. 1-2 and fig. 4, finally, when the steel bar needs to be bent, the motor 11 works and drives the transmission rod 12 to rotate, so as to drive the hollow rod 22 to rotate through the belt 13, wherein the motor 11 stops rotating after rotating for one circle, and at this time, a steel bar is just processed, which is a set value and can be changed according to actual requirements, which is not limited in the present application.

When the embodiment combining all the characteristics described in the application is used as an example, the first guide wheel 4 is arranged in a hourglass shape, the central positions of the first guide wheel 4 and the push plate 10 are positioned on the same horizontal plane, when a steel bar needs to be machined, the steel bar is placed between the first guide wheel 4 and the push plate 10 and is rotated by the manual driving rotating handle 5, so that the first screw rod 6 coaxially connected with the first guide wheel is driven to rotate, the first threaded sleeve 7 moves, the fixing block 8 and the guide rail 9 are in a clamping state, the guide rail 9 and the first screw rod 6 are in a parallel position, the guide rail 9 has a guiding function, the first threaded sleeve 7 fixed with the fixing block 8 moves along the length direction of the first screw rod 6 and drives the push plate 10 to move towards the direction of the first guide wheel 4, when the push plate 10 and the first guide wheel 4 are abutted against the steel bar, the steel bar is fixed between the push plate 10 and the first guide wheel 4, at the moment, the steel bar is abutted against the second guide wheel 28, the sliding block 31 is driven to slide on the sliding groove through the air cylinder 30, the limiting wheel 32 is driven to move towards the second guide wheel 28, after the limiting wheel 32 moves to a certain position, the air cylinder 30 stops working, in an initial state, the ratchet 24 is abutted against the first limiting rod 17, the ratchet 24 is separated from the ratchet 27, the second threaded sleeve 21 is positioned at the maximum stroke towards the direction of the base 1, the longest second limiting rod 19 is positioned at the same horizontal plane with the first limiting rod 17 and can be abutted against the ratchet 24, when the bending angle needs to be adjusted, only the abutting quantity with the ratchet 24 needs to be changed, at the moment, the second lead screw 20 rotates and drives the second threaded sleeve 21 to move, so that the limiting plate 18 moves along the length direction of the fixing rod 14, the fixing rod 14 has a guiding function, so that the limiting plate 18 cannot deflect when moving, so that the second threaded sleeve 21 moves along the length direction of the second lead screw 20, the limit plate 18 can drive the second limit rod 19 to move, and according to the required bending angle, the required second limit rod 19 is driven to move to the required height, at the moment, the second lead screw 20 stops rotating, the motor 11 works and drives the transmission rod 12 to rotate, so that the hollow rod 22 is driven to rotate through the belt 13, the rotary disc 23 fixed on the hollow rod 22 rotates, the rotary disc 23 can drive the ratchet 24 to rotate around the hollow rod 22, because the ratchet 24 is separated from the ratchet 27, the ratchet 27 cannot rotate, and under the action of the first limit rod 17, the ratchet 24 is always separated from the ratchet 27, when the ratchet 24 is separated from the first limit rod 17 and is abutted against the second limit rod 19, the ratchet 24 is still separated from the ratchet 27, and when the ratchet 24 is separated from the second limit rod 19, under the action of the torsion spring 25, the driving ratchet 24 rotates around the rotation point and moves to a position meshed with the ratchet wheel 27, so that the ratchet wheel 27 is driven to rotate, the rotation rod 26 rotates, the rotation rod 26 also drives the bearing plate 29 to rotate, and the second guide wheel 28 and the limiting wheel 32 are driven to rotate, and under the action of the second guide wheel 28 and the limiting wheel 32, the reinforcing steel bar is bent.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. A bending machine, comprising:

the steel bar fixing device comprises a base (1) and symmetrically arranged support rods (2) fixedly arranged on the base (1), wherein a workbench (3) is fixed on the support rods (2), and a clamping mechanism for fixing steel bars is arranged on the workbench (3);

be provided with adjustment mechanism on base (1), base (1) with be provided with on workstation (3) with the intermittent type drive mechanism that adjustment mechanism connects, be fixed with on the intermittent type drive mechanism and accept board (29), accept and be fixed with No. two leading wheels (28) on board (29), accept and seted up the spout on board (29), accept and be fixed with cylinder (30) on board (29), slidable mounting has in the spout with cylinder (30) fixed connection's sliding block (31), be fixed with spacing wheel (32) on sliding block (31), still be provided with on base (1) with the drive assembly that intermittent type drive mechanism connects, drive assembly passes through the drive of intermittent type drive mechanism accept board (29) and rotate.

2. The bending machine according to claim 1, wherein the clamping mechanism comprises a first guide wheel (4) fixedly mounted on the worktable (3), a first lead screw (6) rotatably mounted on the worktable (3), and a rotating handle (5) rotatably mounted on the worktable (3) and coaxially connected with the first lead screw (6), and a guide assembly connected with the first lead screw (6) is further arranged on the worktable (3).

3. The bending machine according to claim 2, wherein the guide assembly comprises a first threaded sleeve (7) movably mounted on the first lead screw (6) and in threaded fit with the first lead screw (6), a fixed block (8) fixedly mounted on the first threaded sleeve (7), and a guide rail (9) fixedly mounted on the workbench (3) and clamped with the fixed block (8), and a push plate (10) is further fixed on the first threaded sleeve (7).

4. The bending machine according to claim 1, wherein the adjusting mechanism comprises a fixed rod (14) fixedly mounted on the base (1), a supporting disk (15) connected with the intermittent transmission mechanism is fixed on the fixed rod (14), and a limiting assembly connected with the intermittent transmission mechanism is further arranged on the base (1) and connected with the supporting disk (15).

5. The bending machine according to claim 4, wherein the limiting assembly comprises a plurality of sets of through holes (16) which are arranged on the supporting disk (15) in a circumferential equidistant manner, a plurality of sets of first limiting rods (17) which are fixedly installed on the supporting disk (15) in a circumferential equidistant manner, and a supporting structure which is arranged on the base (1) and connected with the fixing rod (14) and the supporting disk (15), wherein a plurality of sets of second limiting rods (19) which are matched with the through holes (16) are fixed on the supporting structure, and the first limiting rods (17) and the second limiting rods (19) are connected with the intermittent transmission mechanism.

6. The bending machine according to claim 5, wherein said supporting structure comprises a limit plate (18) movably mounted on said fixed rod (14) and fixedly connected with said second limit rod (19), a second lead screw (20) rotatably mounted on said base (1) and said supporting plate (15), and a second threaded sleeve (21) movably mounted on said second lead screw (20) and in threaded engagement with said second lead screw (20), said second threaded sleeve (21) being fixedly connected with said limit plate (18).

7. The bending machine according to claim 4, wherein the intermittent transmission mechanism comprises a hollow rod (22) rotatably mounted on the supporting disk (15), a rotating disk (23) is fixed on the hollow rod (22), a rotating rod (26) arranged in the hollow rod (22) is rotatably mounted on the supporting disk (15), a meshing component connected with the rotating disk (23) and the rotating rod (26) is arranged on the base (1), and the rotating rod (26) is fixedly connected with the bearing plate (29).

8. The bending machine according to claim 7, wherein said meshing assembly comprises a ratchet wheel (27) fixedly mounted on said rotating rod (26), a ratchet (24) rotatably mounted on said rotating disc (23) and intermittently engaged with said ratchet wheel (27), and a torsion spring (25) fitted over a rotation axis of said ratchet (24) and fixedly connected with said rotating disc (23).

9. The machine according to claim 7, wherein said drive assembly comprises a motor (11) fixedly mounted on said base (1), a transmission rod (12) rotatably mounted on said base (1) and on said worktable (3), and a belt (13) fitted over said transmission rod (12) and connected to said hollow rod (22), said transmission rod (12) being connected to an output shaft of said motor (11).

Images