CN213620379U

CN213620379U - Handheld semi-automatic belt bundling machine

Info

Publication number: CN213620379U
Application number: CN202021259746.1U
Authority: CN
Inventors: 宋彦金
Original assignee: Sichuan Jisu Intelligent Technology Co ltd
Current assignee: Sichuan Jisu Intelligent Technology Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-07-06
Anticipated expiration: 2030-07-02

Abstract

The invention provides a handheld semi-automatic strapping machine, and belongs to the field of tools. A hand-held semi-automatic belt bundling machine is composed of feeding mechanism, trigger clamping jaw mechanism, ribbon tensioning mechanism, ribbon cutting-off mechanism and power unit. Wherein the feeding mechanism is connected with the power device through a gear and a belt; the trigger clamping jaw mechanism is connected with the tail part of the feeding mechanism; the ribbon tensioning mechanism is connected with the power mechanism through a gear; the ribbon cutting mechanism is connected with the power mechanism through a gear and a cam. The invention has the beneficial effects that: the binding efficiency of the binding belt is improved; the machine is small in size and light in weight; the portable working table has good portability and can adapt to various working sites; the labor intensity of workers is reduced.

Description

Handheld semi-automatic belt bundling machine

Technical Field

The invention designs a handheld semi-automatic strapping machine, and belongs to the field of tools.

Background

At present, in the electrical installation industry, most of the work of bundling wires, pipelines and the like by nylon cable ties is manually finished. The automatic belt bundling machine in the market structurally comprises a pneumatic feeding mechanism comprising a vibrating disc. The portable type mobile robot is suitable for relatively fixed workplaces, but is inconvenient to move due to the large size of the workplace when the workplace needs to be frequently replaced, and the application range of the portable type mobile robot is limited.

There is also a manual ribbon rifle in the market, and its mechanism itself does not have power, relies on lever principle taut and burst mechanism to cut off the nylon ribbon, and this kind of manual ribbon rifle though small portable, it still needs manual perforation, uses manual ribbon rifle to cut off after tensioning a little, and work efficiency is low, and intensity of labour is big.

Disclosure of Invention

Aiming at the defects, the invention provides a handheld semi-automatic strapping machine which is used for the nylon strapping tape strapping work requiring frequent replacement of a work site in order to realize the automation of nylon strapping tape strapping and simultaneously has the advantages of lightness and portability.

The scheme of the invention is as follows: a hand-held semi-automatic belt binding machine comprises a trigger clamping jaw mechanism 1, a feeding mechanism 2, a belt tensioning mechanism 3, a power device 4, a belt cutting mechanism 5, a shell I43 and a shell II 44.

The power device 4 comprises a brushless DC motor 6 and a worm reducer 7. The direct current brushless motor 6 is clamped on the shell I43, and an output shaft of the direct current brushless motor 6 is coaxially connected with an input shaft of the worm reducer 7.

The trigger clamping jaw mechanism 1 comprises a trigger 8, a pin shaft I9, a connecting rod I10, a middle connecting rod 11, a pin shaft II 12, a connecting rod II 13, an upper wire clamping jaw 14, a screw I15, a pin shaft III 16 and a lower wire clamping jaw 17. Wherein, the trigger 8 is connected on the shell I43 through a pin shaft I9 and can freely rotate around the pin shaft I9. The middle connecting rod 11 is connected to the shell I43 through a pin shaft II 12 and can freely rotate around the pin shaft II 12. The lower wire clamping claw 17 is connected to the shell I43 through a pin shaft III 16 and can freely rotate around the pin shaft III 16. The upper wire clamping claw 14 is fixedly connected with the shell I43 through a screw I15. The trigger 8, the connecting rod I10, the middle connecting rod 11, the connecting rod II 13 and the lower wire clamping claw 17 are hinged through a short pin shaft in sequence.

The feeding mechanism 2 comprises a belt wheel I18, a belt gear 19, a belt I20, a square trough 21, a trough cover plate 22, a belt II 23, a belt wheel II 24, a belt wheel pin shaft I25, a screw II 26, a pushing block 27, a belt wheel III 28 and a belt wheel pin shaft II 29. Wherein the belt gear 19 and the output shaft of the worm gear reducer 7 are connected for synchronous rotation, the belt wheel I18 is connected with the belt gear 19 through a belt I20, the belt wheel I18 is in interference connection with a belt wheel pin shaft II 29, two ends of the belt wheel pin shaft II 29 are hinged with a shell I43 and a shell II 44, the belt wheel pin shaft II is also in interference connection with a belt wheel III 28, the belt wheel III 28 is connected with a belt wheel II 24 through a belt II 23, and the belt wheel II 24 is connected with the shell I43 through a belt wheel pin shaft I25. The square trough 21 is clamped on the shell II 44, and the trough cover plate 22 is buckled on the square trough 21. The pushing block 27 is fixedly connected with the belt II 23 through a screw II 26, and the pushing block 27 penetrates through an open slot on the trough cover plate and is installed inside the square trough 21.

The band tensioning mechanism 3 comprises a driven friction wheel 30, a rolling sleeve 31, a gear shaft I32, a gear shaft II 33, a driving friction wheel 34, a one-way needle bearing I35, an intermediate transmission gear 36, a tensioning gear 37 and a driven friction wheel pin shaft 38. The output shaft of the worm gear reducer 7 is connected with a toothed wheel 19, the toothed wheel 19 is meshed with an intermediate transmission gear 36, the intermediate transmission gear 36 is meshed with a tensioning gear 37, the tensioning gear 37 is in interference connection with the outer ring of a one-way needle bearing I35, the one-way needle bearing I35 is connected with a gear shaft I32, and the gear shaft I32 is further in interference connection with a driving friction wheel 34. The driven friction wheel 30 is hinged on the shell I43 through a driven friction wheel pin shaft 38. Two ends of the gear shaft I32 and two ends of the gear shaft II 33 are hinged with the shell I43 and the shell II 44 respectively through rolling sleeves.

The tie cutting mechanism 5 comprises a one-way needle bearing II 39, a cam 40, a cutting knife 41 and a spring 42. The unidirectional needle bearing II 39 is connected with the gear shaft II 33, the outer ring of the unidirectional needle bearing II is connected with the cam 40 through a key, the cutting knife 41 is hinged on the shell I43 through a pin shaft, the cam 40 is in surface contact with the cutting knife 41, and the front of the cutting knife 41 is in contact with the spring 42.

The working principle of the invention is as follows:

the power device 4 is characterized in that the direct current brushless motor 6 is a power source, is connected with an input shaft of the worm reducer 7, and converts the power output to 90-degree direction through the worm reducer 7.

The trigger clamping jaw mechanism 1 adopts a link mechanism, the trigger 8 rotates around a hinge shaft hinged to a shell I43, the motion is transmitted to a lower wire clamping jaw 17 through a connecting rod I10, a middle connecting rod 11 and a connecting rod II 12, and the rotation of the lower wire clamping jaw around a hinge shaft III hinged to the shell I43 is realized.

In the feeding mechanism 2, the direct current brushless motor 6 rotates in the positive and negative directions to drive the output shaft of the worm gear reducer 7 to rotate in the positive and negative directions, so as to drive the belt gear 19 to rotate, the belt wheel I18 is driven to rotate through the belt I20, the belt wheel pin shaft II 29 in interference connection with the belt wheel I18 rotates, the movement is transmitted to the belt wheel III (28), and the movement of the belt II 23 is realized through the rotation of the belt wheel III (28). So that the pushing block 27 fixedly connected with the belt II 23 through the screw II 26 realizes the back and forth movement in the square trough 21. When the pushing block 27 pushes the front end and the rear end of the square trough 21, the tension between the belt II and the belt wheel is moderate due to the resistance, and the belt II 23 begins to slide with the belt wheel. The pushing block 27 stops moving at two ends in the square trough 21.

In the ribbon tensioning mechanism 3, the movement is transmitted to the tensioning gear 37 through the intermediate transmission gear 36 meshed with the toothed wheel 19 and the tensioning gear 37 meshed with the intermediate transmission gear 36 by the rotation of the toothed wheel 19 connected with the output shaft of the worm reducer 7, because the tensioning gear 37 is in interference fit with the outer ring of the one-way needle bearing I35, when the toothed wheel 19 rotates clockwise, the tensioning gear 37 rotates clockwise, at the moment, the inner ring and the outer ring of the one-way needle bearing I35 cannot rotate relatively, so that the gear shaft I32 is locked, the gear shaft I32 is driven to rotate, and the rotation is transmitted to the driving friction wheel 34. When the toothed wheel 19 rotates counterclockwise, the tension gear 37 idles around the gear shaft i 32 because the one-way needle bearing i 35 can rotate in this direction.

In the ribbon cutting mechanism 5, the movement is transmitted to the gear shaft II 33 connected with the intermediate transmission gear 36 through the intermediate transmission gear 36 meshed with the gear 19 by the rotation of the gear 19 connected with the output shaft of the worm reducer 7, when the gear 19 rotates clockwise, the one-way needle bearing II 39 can rotate, and due to the acting force of the spring 42 in front of the cutting knife 41, the cam 40 is static and rotates relative to the gear shaft II 33, and the cutting knife 41 is static. When the gear 19 rotates counterclockwise, the one-way needle bearing ii 39 cannot rotate and is locked with the gear shaft 33, so as to drive the cam 40 and the gear shaft ii 33 to rotate synchronously, the cam 40 pushes the rear surface of the cutting blade 41, at this time, the thrust of the cam 40 to the cutting blade 41 is much greater than the thrust of the spring 42 to the cutting blade 41, and therefore, the cutting blade 41 rotates forward around the pin shaft hinged to the housing i 43.

The invention has the beneficial effects that:

1. the efficiency of the nylon cable tie binding operation is improved;

2. compared with a manual strapping gun, the operation is simple, and the labor intensity of workers is reduced;

3. compared with a pneumatic feeding ribbon tool with a vibrating tray, the ribbon tool is more portable and suitable for more working occasions;

4. the cutting and tail retaining lengths of the binding belt are more uniform and consistent.

Drawings

Fig. 1 is a schematic perspective view of the present invention with the housing ii removed.

Fig. 2 is a schematic perspective view of the present invention with the housing i removed.

Fig. 3 is a schematic perspective view of a clamping jaw mechanism of the sear of the present invention.

Fig. 4 is an exploded perspective view of the feed mechanism of the present invention.

Figure 5 is an exploded view of the cable tie tensioning mechanism of the present invention in perspective.

Fig. 6 is a perspective view of the strap cutting mechanism of the present invention.

Fig. 7 is a schematic view 1 of the overall structure of the present invention.

Fig. 8 is a schematic diagram 2 of the overall structure of the present invention.

The reference numbers in the figures are: 1-trigger gripper mechanism, 2-feed mechanism, 3-band tensioning mechanism, 4-power unit, 5-band cutting mechanism, 6-DC brushless motor, 7-worm reducer, 8-trigger, 9-pin I, 10-link I, 11-middle link, 12-pin II, 13-link II, 14-upper gripper, 15-screw I, 16-pin III, 17-lower gripper, 18-pulley I, 19-toothed wheel, 20-belt I, 21-square trough, 22-trough cover, 23-belt II, 24-pulley II, 25-pulley pin I, 26-screw II, 27-pusher, 28-pulley III, 29-pulley pin II, 30-driven friction wheel, 31-rolling sleeve, 32-gear shaft I, 33-gear shaft II, 34-driving friction wheel, 35-one-way needle bearing I, 36-intermediate transmission gear, 37-tensioning gear, 38-driven friction wheel pin shaft, 39-one-way needle bearing II, 40-cam, 41-cutting knife, 42-spring, 43-shell I, 44-shell II, 45-feeding hole and 46-discharging hole.

Detailed Description

The invention will be further described with reference to the following figures and examples, without however restricting the scope of the invention thereto.

Example (b): as shown in figures 1-8, a hand-held semi-automatic strapping machine is characterized in that a nylon strapping tape is manually placed into a square trough 21 from a feeding hole 15, a trigger 8 is pulled, and closing action of an upper clamping jaw and a lower clamping jaw is realized through an intermediate link mechanism.

After the sensor detects the trigger pulling action, the direct current brushless motor 6 starts to rotate positively, and clockwise rotation of the belt gear 19 is realized through the transmission of the worm reducer 7. Belt gear 19 passes through belt I20 with band pulley I18 and is connected to band pulley I18 clockwise rotation drives band pulley round pin axle II 29 and band pulley III clockwise rotation. Thereby realizing the forward movement of the pushing block 27 fixedly connected with the belt II 23 in the square trough 21 and pushing the nylon cable tie to move forward along the square trough 21. When the head of the nylon cable tie is abutted to the front end stop block in the square trough 21, the pushing block 27 bears large resistance, the belt II 23 starts to slide at the moment, the nylon cable tie is abutted by the pushing block 27, the head end position is fixed, the tail part is positioned in a closed ring in the guide grooves of the upper clamping jaw and the lower clamping jaw, and at the moment, the nylon cable tie is surrounded by the bundled objects.

The clockwise rotation of the belt gear 19 also causes the counterclockwise rotation of the intermediate transfer gear 36, which in turn causes the clockwise rotation of the take-up gear 37. At this moment, one-way needle bearing I35 and gear shaft I32 lock, link firmly on gear shaft I32 equivalently, drive gear shaft I32 clockwise rotation together. So that the driving pulley 38 rotates clockwise. When the trigger 8 is pulled further, the tail of the nylon cable tie passes through the head of the nylon cable tie and enters the small gap between the driving friction wheel 38 and the driven friction wheel 30, and the tail is subjected to upward friction between the gaps of the two friction wheels, so that the tensioning action of the cable tie is realized.

The clockwise rotation of the belt gear 19 also drives the counterclockwise rotation of the intermediate transmission gear 36, and thus the counterclockwise rotation of the gear shaft II, but the cam 40 does not rotate at this time because the one-way needle bearing II 39 can rotate in the counterclockwise direction.

When the nylon cable tie is tensioned, the trigger 8 is loosened, the lower cable clamping claw 14 returns to the original position, and after the sensor detects the state that the trigger is loosened, a signal is given, and the direct current brushless motor 6 stops rotating forwards and starts rotating backwards.

The direct current brushless motor 6 rotates reversely, and drives the gear 19 to rotate anticlockwise through transmission of the worm reducer 7. Therefore, the intermediate transmission gear 36 meshed with the gear shaft is driven to rotate clockwise, the gear shaft II 33 is driven to rotate, the unidirectional needle bearing II 39 cannot rotate clockwise, at the moment, the gear shaft II 33 and the unidirectional needle bearing 39 are locked, the cam 40 connected with the unidirectional needle bearing II 39 is driven to rotate clockwise, the cam 40 rotates to push the cutting knife 41 to rotate around the pin shaft, the nylon cable tie is cut off forwards, and one-time binding work of the nylon cable tie is completed.

Meanwhile, as in the clockwise rotation transmission of the belt gear 19, the counterclockwise rotation of the belt gear 19 drives the counterclockwise rotation of the tightening gear 37, and since the unidirectional needle bearing i 35 can rotate counterclockwise at this time, the tightening gear 37 idles on the gear shaft i 32, and the driving friction wheel 30 does not rotate.

Meanwhile, the transmission is the same as the clockwise rotation transmission of the gear 19, the counterclockwise rotation of the gear 19 can drive the pushing block 27 to move backwards in the square trough 21, when the pushing block abuts against the tail end of the square trough 21, the belt II 23 starts to slip, and after the direct-current brushless motor 6 rotates reversely for a period of time and stops, the pushing block 27 stops at the tail end of the square trough 21, so that the resetting of the pushing block 27 is realized.

Claims

1. The utility model provides a semi-automatic ribbon machine of hand-held type which characterized in that: the band-tightening mechanism comprises a trigger clamping jaw mechanism (1), a feeding mechanism (2), a band-tightening mechanism (3), a power device (4), a band-cutting mechanism (5), a shell I (43) and a shell II (44), wherein the trigger clamping jaw mechanism (1), the feeding mechanism (2), the band-tightening mechanism (3), the power device (4) and the band-cutting mechanism (5) are all fixed between the shell I (43) and the shell II (44).

2. The hand-held semi-automatic strapping machine of claim 1 further comprising: the power device (4) comprises a direct current brushless motor (6) and a worm gear reducer (7), wherein the direct current brushless motor (6) is clamped on the shell I (43), and an output shaft of the direct current brushless motor (6) is connected with the worm gear reducer (7) in a direct insertion mode.

3. The hand-held semi-automatic strapping machine of claim 1 further comprising: the trigger clamping jaw mechanism (1) comprises a trigger (8), a pin shaft I (9), a connecting rod I (10), a middle connecting rod (11), a pin shaft II (12), a connecting rod II (13), an upper wire clamping jaw (14), a screw I (15), a pin shaft III (16) and a lower wire clamping jaw (17), wherein the trigger (8) is connected to the shell I (43) through a pin shaft I (9), can freely rotate around a pin shaft I (9), a middle connecting rod (11) is connected to a shell I (43) through a pin shaft II (12), can freely rotate around a pin shaft II (12), a lower wire clamping claw (17) is connected to a shell I (43) through a pin shaft III (16), can freely rotate around a pin shaft III (16), an upper wire clamping claw (14) is fixedly connected with a shell I (43) through a screw I (15), and a trigger (8), a connecting rod I (10), a middle connecting rod (11), a connecting rod II (13) and a lower wire clamping claw (17) are sequentially hinged through a short pin shaft.

4. The hand-held semi-automatic strapping machine of claim 1 further comprising: the feeding mechanism (2) comprises a belt wheel I (18), a belt gear (19), a belt I (20), a square trough (21), a trough cover plate (22), a belt II (23), a belt wheel II (24), a belt wheel pin shaft I (25), a screw II (26), a pushing block (27), a belt wheel III (28) and a belt wheel pin shaft II (29), wherein the belt gear (19) is connected with an output shaft of the worm gear reducer (7), the belt wheel I (18) is connected with the belt wheel (19) through the belt I (20), the belt wheel I (18) is in interference connection with the belt wheel pin shaft II (29), two ends of the belt wheel pin shaft II (29) are hinged with a shell I (43) and a shell II (44), the belt wheel pin shaft II is also in interference connection with the belt wheel III (28), the belt wheel III (28) is connected with the belt wheel II (24) through the belt II (23), the belt wheel II (24) is connected with the belt wheel pin, the square trough (21) is clamped on the shell II (44), the trough cover plate (22) is buckled on the square trough (21), the pushing block (27) is connected to the belt II (23) through the screw II (26), and the pushing block (27) penetrates through an open slot in the trough cover plate and is installed inside the square trough (21).

5. The hand-held semi-automatic strapping machine of claim 1 further comprising: the ribbon tensioning mechanism (3) comprises a driven friction wheel (30), a rolling sleeve (31), a gear shaft I (32), a gear shaft II (33), a driving friction wheel (34), a one-way needle bearing I (35), an intermediate transmission gear (36), a tensioning gear (37) and a driven friction wheel pin shaft (38), wherein an output shaft of the worm gear reducer (7) is connected with a belt gear (19), the belt gear (19) is meshed with the intermediate transmission gear (36), the intermediate transmission gear (36) is meshed with the tensioning gear (37), the tensioning gear (37) is in interference connection with an outer ring of the one-way needle bearing I (35), the one-way needle bearing I (35) is connected with the gear shaft I (32), the gear shaft I (32) is also in interference connection with the driving friction wheel (34), the driven friction wheel (30) is hinged to a shell I (43) through the driven friction wheel pin shaft (38), two ends of the gear shaft I (32) and the gear shaft II (33) are hinged to the shell I ( And a shell II (44).

6. The hand-held semi-automatic strapping machine of claim 1 further comprising: the tie cutting mechanism (5) comprises a one-way needle bearing II (39), a cam (40), a cutting knife (41) and a spring (42), wherein the one-way needle bearing II (39) is connected with a gear shaft II (33), the outer ring of the one-way needle bearing II is connected with the cam (40) through a key, the cutting knife (41) is hinged to a shell I (43) through a pin shaft, the cam (40) is in surface contact with the cutting knife (41), and the front of the cutting knife (41) is in contact with the spring (42).