CN214190245U

CN214190245U - Looping mechanism of banding machine

Info

Publication number: CN214190245U
Application number: CN202022333114.1U
Authority: CN
Inventors: 林旭斌
Original assignee: Taizhou Xutian Packaging Machinery Co ltd
Current assignee: Taizhou Xutian Packaging Machinery Co ltd
Priority date: 2020-08-24
Filing date: 2020-10-19
Publication date: 2021-09-14
Anticipated expiration: 2030-10-19
Also published as: CN214190244U; CN112278965A; CN112278964B; CN112278965B; CN214190246U; CN112278964A; CN213832231U; CN214190243U

Abstract

The utility model belongs to the technical field of packaging belt packaging machines, in particular to a loop mechanism of a belt binding machine, which comprises a plurality of driving wheels arranged on a frame of the belt binding machine; a belt assembly wound between the driving wheels to form a track for transferring the belt; a vacuum device for sucking the belt on the surface of the belt assembly; a tape guide frame assembly including at least one movable cover member having an operative position and an open position, the cover member in the operative position covering at least a portion of the track, the track and cover member cooperating to define a channel for the tape to pass through and restrict its removal; the cover portion does not cover the track when in the open position so that the strap can be disengaged from the track. The utility model discloses make the passageway can follow the belt and carry out the change of adaptability according to the relative movement between the cover part for the belt can be transported in the passageway better, promotes the transportation degree of accuracy and efficiency.

Description

Looping mechanism of banding machine

Technical Field

The utility model belongs to the technical field of the wrapping tape baling press, concretely relates to looping mechanism of banding machine.

Background

The strapping machine is a common packaging device, and can automatically wind a belt on an article only by placing the article in a working frame of the strapping machine, and then perform the winding and cutting operations on the wound belt.

Patent number PCT/NL95/00035 discloses a banding machine for banding products, the device having a tape storage mechanism, a loop mechanism, a fusion welding mechanism, a tape cutting mechanism, etc.; wherein, the loop mechanism adopts belt transmission and combines a fan vacuum pumping mode to transmit the belt;

the main defects of the belt bundling machine are as follows: the conduction band frame which is arranged on the link mechanism and used for guiding the belt to transmit and carry out loop knot can not be adjusted according to the actual condition of the belt, the use is limited, and the transmission is unstable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a knot mechanism of banding machine is equipped with relative movement's the part that covers in the knot mechanism for the belt advances the in-process at the track and can carry out adaptability to the passageway of belt transportation and adjust, makes the belt transmit and encircle better, also can adapt to various belts, strong adaptability.

The purpose of the utility model is realized like this:

a loop mechanism of a banding machine comprises a plurality of driving wheels, a plurality of driving wheel groups and a plurality of driving wheel groups, wherein the driving wheels are arranged on a rack of the banding machine; the belt assembly is wound between the transmission wheels to form a track and is used for transmitting the belt; a vacuum device for sucking the belt on the surface of the belt assembly; a tape guide frame assembly including at least one movable cover member having an operative position and an open position, the cover member in the operative position covering at least a portion of the track, the track and cover member cooperating to define a channel for the tape to pass through and restrict its removal; the cover portion does not cover the track when in the open position so that the strap can be disengaged from the track.

It is further provided that the width of the uncovered portion track is less than the width of the strap to be delivered when the cover portion is in the operative position.

It is further provided that the covering member includes a front frame and a rear frame, the front frame and the rear frame being respectively provided on the front side and the rear side of the rail, the front frame and the rear frame being movable toward and away from each other by the driving means; the front frame and the rear frame are close to each other and cover a part of the track during the forward transfer of the belt; the front and rear frames are moved away from each other and out of the working area of the track during the rearward tightening of the strap by the tightening mechanism.

The opposite surfaces of the front frame and the rear frame are provided with guide belt strips, and the guide belt strips can shield or separate from a working area of the track; the two guide belts approach each other to a set position during the forward conveying process of the belt, and the distance between the two guide belts is smaller than the width of the belt; the two guide belt strips and the belt assembly enclose the channel for the belt to pass through.

It is further provided that the drive means is: the left side and the right side of the front frame and the rear frame are provided with fixed plates, the fixed plates are provided with lugs, the left side and the right side of the front frame and the rear frame are movably provided with left sliding plates and/or right sliding plates, and the side edges of the left sliding plates and the right sliding plates are provided with sliding rails for the lugs to slide in or out; the front frame and the rear frame are reset through a tension spring.

The driving device further comprises a second driving motor, a gear box is arranged on the second driving motor, a first cam assembly is arranged at the output end of the gear box and comprises a fourth cam, and a fourth roller is arranged on the left/right sliding plate and driven by the fourth cam to reciprocate.

Further set up as, link to each other through the steel wire subassembly between left side slide and the right slide, the steel wire subassembly is taken turns including the left side line that is located left side slide and right slide top and takes turns with the right side line, and the tensioning is equipped with the steel wire between left side line takes turns and takes turns with the right side line, and the both ends of steel wire are fixed with left side slide and right slide respectively.

The front ends of the front frame and the rear frame are provided with outward-spreading guide openings, a feeding plate for conveying the belt into the track is arranged in the rack, and the guide openings face the tail ends of the feeding plate; a belt guide plate is arranged above the tail end of the feeding plate, the lower end opening of the belt guide plate faces the introducing port, the front end of the belt enters the introducing port along the feeding plate, and the belt advances towards the introducing port along the belt guide plate after passing through the rail; and a fusion welding mechanism and a tape cutting mechanism are arranged between the leading-in port and the tape guide plate.

It is further provided that the vacuum means comprises a fan disposed on one side of the track, the fan discharging air from the track to a negative pressure to urge the tape against the track.

The belt component further comprises a middle synchronous belt wheel, and the middle synchronous belt wheel receives the belt conveyed by the previous synchronous belt wheel and transmits the belt to the next synchronous belt wheel; the middle synchronous belt wheel is provided with a plurality of synchronous belt grooves; the synchronous belts between the middle synchronous pulley and the previous synchronous pulley and the synchronous belts between the middle synchronous pulley and the next synchronous pulley are arranged in the synchronous belt groove at intervals.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

the utility model discloses a looping mechanism includes the conduction band frame subassembly, and conduction band frame subassembly includes a mobilizable cover part at least, and cover part has operating position and open position, and in the forward conveying process of belt, should cover the part and be in operating position and cover a partial track at least, and the track cooperates with cover part and forms the passageway that supplies the belt transmission and restrict its and break away from; during tightening of the strap backwards, the cover part is in the open position and does not cover the track, so that the strap can be disengaged from the track; according to the relative movement between the covering parts, the channel can be changed adaptively along with the belt, so that the belt can be better transported in the channel, the transporting accuracy and efficiency are improved, and the belt with different widths can be adapted.

The front frame and the rear frame of the utility model move through the left sliding plate and the right sliding plate which are positioned at the left and the right sides, the left sliding plate/the right sliding plate move up and down under the driving of the second driving motor, and the left sliding plate and the right sliding plate are connected through the steel wire component, thereby driving the right sliding plate to move synchronously; the left and right sides of preceding frame and rear frame is equipped with the fixed plate, is equipped with the lug on the fixed plate, the gliding slip track of confession lug is seted up to left side slide and right slide side, when left side slide and right slide reciprocated, the lug removed in the slip track to frame and rear frame remove before driving, and mechanical control removes accurately.

The head ends of the front frame and the rear frame of the utility model are formed with outward-expanding leading-in ports which face to the tail end of the feeding plate, so that the front ends of the belts can be conveniently guided to enter the leading-in ports along the feeding plate; the upper part of the tail end of the feeding plate is provided with a tape guide plate, the lower end opening of the tape guide plate faces the inlet, so that the tape can conveniently advance along the tape guide plate towards the inlet after passing through the track, and the tape cutting mechanism is arranged between the inlet and the tape guide plate, so that the tape can be cut after the tape is completely wound for one circle.

Drawings

FIG. 1 is a schematic view of a belt binding machine according to the present invention;

FIG. 2 is a schematic view of the internal structure of a frame of the banding machine of the present invention;

FIG. 3 is a schematic view of the external structure of a frame of the banding machine of the present invention;

FIG. 4 is a structural diagram of the belt binding machine of the present invention installed between the auxiliary connecting rod, the rotating rod and the frame;

FIG. 5 is a schematic view of the present invention;

FIG. 6 is a second simplified structural diagram of the present invention;

FIG. 7 is a schematic view of a belt cutting mechanism of the belt binding machine of the present invention;

FIG. 8 is an enlarged view of a portion of FIG. 7 at A;

FIG. 9 is a third simplified structural diagram of the present invention;

FIG. 10 is a fourth simplified structural diagram of the present invention;

FIG. 11 is an enlarged view of a portion of FIG. 10 at B;

FIG. 12 is a view of the structure of the rail entrance of the present invention;

fig. 13 is a schematic view of a connection structure between the front frame and the rear frame according to the present invention;

fig. 14 is a partial enlarged view of fig. 9 at C.

Detailed Description

The invention will be described in detail with reference to the accompanying drawings, which are shown in fig. 1-14:

as shown in fig. 1 and 2, the belt binding machine includes a frame 1, a belt storing mechanism (for storing the belt 20 and supplying the belt 20 to the loop mechanism when necessary) provided at the front side of the frame 1, a loop mechanism (for advancing the belt 20 along an annular rail 42 and forming an end-to-end loop) provided inside the frame, a tightening mechanism (for reversely tightening the belt 20 and tightening the loop formed by the belt 20 to a product to be bound), a welding mechanism (for welding the end and the tail of the loop together), a belt cutting mechanism (for cutting the belt 20 still connected except the loop), and a control system for controlling the above mechanisms.

An inlet 17 for a belt to enter is formed in the side face of the rack 1, a square frame-shaped mounting part 10 is arranged on a workbench of the rack 1, a control screen 18 is arranged on the front side of the workbench, an object to be banded is placed in the square frame-shaped mounting part 10, and the belt 20 is wound on the belt storage mechanism; the machine frame 1 is internally provided with a feeding plate 41 and a driving mechanism 3 which are used for conveying the belt 20 into the track 42, the outer end of the belt 20 enters the feeding plate 41 through the belt storage mechanism, the feeding plate 41 drives the belt 20 to enter the loop mechanism under the driving of the driving mechanism, the loop mechanism winds the belt on an object to be banded and tightly binds the belt through the tightening mechanism, the fusion welding mechanism fuses the belt and cuts off the belt through the belt cutting mechanism to complete the belt work, the whole process is mechanically controlled, and the working efficiency is high.

A preferred embodiment of the storage mechanism is described herein: the tape storage mechanism comprises a tape storage bin 2 arranged at the lower part of the front of the rack, a tape reel shaft is installed in the tape storage bin 2, a tape reel 21 formed by winding a tape is sleeved on the tape reel shaft, a tape reel pressing plate 25 and a handle 26 are arranged on the outer side, located at the tape reel 21, of the outer end part of the tape reel shaft, the tape reel pressing plate 25 is pressed on the tape reel, and the tape reel is prevented from falling off due to centrifugal force in the process of following the rotation of the tape reel shaft. Meanwhile, in order to avoid the situation that the tape reel still keeps rotating under the inertia caused by the driving mechanism, the tape reel brake device 27 is arranged at the inner end of the tape reel shaft and positioned on the inner side of the rack, and the tape reel brake device 27 is an electromagnetic brake and can brake the tape reel in time.

As shown in fig. 3, a tape storage area is arranged on one side of the tape storage bin 2, which is located on the tape reel 21, and includes a plurality of upper rollers 22 and movable rollers 23 arranged at intervals, the upper rollers 22 are directly mounted on the frame 1, and the upper rollers 22 are used for providing support shafts for the tapes 20; the frame 1 is provided with a plurality of moving grooves 11, the movable rolling shafts 23 can be movably arranged in the moving grooves 11, the moving grooves 11 are arranged between a plurality of upper-layer rolling shafts 22 in an arc shape, the top ends of the moving grooves 11 are higher than the upper-layer rolling shafts 22, the bottom ends of the moving grooves 11 are lower than the upper-layer rolling shafts 22, as shown in fig. 1, when the belt winding device is used, the belt 20 is wound and tensioned between the upper-layer rolling shafts 22 and the movable rolling shafts 23, when the movable rolling shafts 23 move downwards to the bottom ends of the moving grooves 11, supporting shafts located at the lower portions are provided for the belt 20, the belt penetrates through the upper-layer rolling shafts 22 and the movable rolling shafts 23 to form a winding, and the belt is conveniently dragged by a driving mechanism to be fed. The top end of the moving groove 11 is higher than the design of the upper roller 22, so that when the belt is initially stored, the movable roller 23 moves to the top of the moving groove, the belt is directly pulled between the upper roller 22 and the movable roller 23, and then the movable roller 23 is directly controlled to move downwards, so that the belt can be wound between the upper roller 22 and the movable roller 23 without sequentially winding the upper roller and the movable roller manually one by one.

As shown in fig. 4, a belt storage connecting rod is arranged on the inner side of the belt storage bin 2, the belt storage connecting rod comprises a rotating rod 12 and an auxiliary connecting rod 13 which are connected with each other, and the plurality of movable rollers 23 are mounted on the auxiliary connecting rod 13, so that the plurality of movable rollers can synchronously move in the moving groove 11; the rotating rod 12 is rotatably arranged on the rack 1, and the rotating rod 12 and the auxiliary connecting rod 13 are arranged at a certain angle; when the rotating rod 12 swings upwards to a set position, the auxiliary connecting rod 13 is in a basically horizontal state and is positioned above the upper-layer roller 22 (namely, the movable roller 23 is positioned at the top end of the moving groove 11), and the movement of the auxiliary connecting rod can drive the position of the movable roller to change, so that the movement of the movable roller can be kept consistent; in order to enhance the stability of the rotating rod, a limiting groove 121 is formed in the rotating rod 12, a limiting rod 14 is arranged in the limiting groove 121, a limiting part 15 is arranged on the rack 1, a tension spring 91 is arranged between the limiting part 15 and the limiting rod 14, and when the rotating rod 12 is located at the uppermost position, the tension spring provides upward tension to the tape storage connecting rod which is larger than the gravity of the tape storage connecting rod and the movable roller 23; when the rotating rod 12 is positioned at the lowest position, the tension spring gives a downward tension to the tape storage connecting rod, so that the tape can be stored again after being used; specifically, an inflection point exists in the rotating process of the rotating rod; above the inflection point, the tension spring generates upward elastic force to overcome gravity and facilitate threading; under the inflection point, the elasticity of the tension spring is matched with the gravity downwards, so that the belt is convenient to store. The inflection point is that when extension spring and dwang are a straight line, the power of elasticity and dwang offset each other this moment, restrict the rotation of dwang through the extension spring.

The lower side of the rotating rod 12 is also provided with a buffer block 16, the buffer block 16 is used for positioning the limit position of the rotating rod 12 which swings downwards, and when the rotating rod rotates downwards, the buffer block can buffer the rotating rod so as to protect the rotating rod; the upper side of the rotating rod 12 is provided with the photoelectric sensing device 162, when the tape is fed, the tape stored in the tape storage area is firstly used, and when the stored tape is nearly used up, the rotating rod 12 can ascend and enter the sensing area of the photoelectric sensing device 162; at this time, the photoelectric sensing device 162 sends a control signal to the main control system, the main control system opens the tape reel brake device 27, the tension spring elastically cooperates with the gravity of the rotating rod to pull the tape reel and store the tape in the tape storage area; when the belt storage is completed, the rotating rod 12 has already left the sensing area of the photoelectric sensing device 162, and the brake is braked again.

An adjusting roller group is arranged on one side of the frame 1, which is positioned in the belt storage area, and comprises an upper roller 281, a lower roller 282 and a bracket 19 for mounting the upper roller and the lower roller, a scale is arranged on one side of the bracket, and the belt 20 passes through the upper layer roller 22 and the movable roller 23 and then passes through and is tensioned between the upper roller 281 and the lower roller 282; the upper roller 281 is provided with a baffle 283, and the outer end of the belt 20 passes through the gap between the baffle 283 and the upper roller 281, enters the inlet 17, is conveyed onto the feeding plate 41, and then enters the conveying mechanism to be conveyed under the driving of the driving mechanism 3.

The looping mechanism comprises a feeding plate 41, a track 42 arranged in a frame-shaped mounting part above a rack workbench, a transmission driving set and a vacuum device for adsorbing the belt 20 on the surface of a belt assembly 44, wherein the transmission driving set comprises a plurality of transmission wheels 43 and the belt assembly 44 which is wound between the transmission wheels 43 and can transmit the belt; the rack is obliquely provided with a slotted plate 45, the feeding plate 41 is arranged on the slotted plate 45, and the front end of the feeding plate 41 is bent upwards to form a guide surface, so that the belt can be conveniently guided to enter the feeding plate 41 and then enter the conveying mechanism.

Five driving wheels are arranged, wherein one driving wheel is positioned at the entrance of the rail 42 at the rear side of the feeding plate 41, the belt passes through the feeding plate and then enters the rail 42 from the entrance, the main driving wheel 431 is arranged at the entrance, the other four driving wheels are driven wheels and are respectively positioned at four corners of the square frame-shaped mounting part, the belt assembly 44 is sleeved among the five driving wheels, and the belt assembly forms the rail 42.

The driving mechanism 3 comprises a first driving motor 31 and a second driving motor 32, a driving roller 33 is arranged on the first driving motor 31, the driving roller 33 is positioned on one side of the feeding plate 41, a first through groove 451 is formed on the grooved plate 45 and the feeding plate, the upper end surface of the driving roller 33 is positioned in the first through groove 451, and the driving roller 33 can drive the belt 20 to move on the feeding plate 41 and enter the track 42.

The outer end of the motor shaft of the first driving motor 31 is further provided with a belt transmission set 34, the belt transmission set 34 comprises a driving wheel 341 and a driven wheel 342 which are connected through a belt, the driving wheel 341 and the driving roller 33 are coaxially arranged, and the driving wheel 341 and the driving roller 33 are driven by the first driving motor 31 to synchronously rotate; the driven wheel 342 is connected with and drives the main driving wheel 431 positioned at the inlet of the track 42 to rotate; the movement of the conveying driving group and the driving roller 33 are driven by the first driving motor 31 together, and the two are kept synchronous, so that the belt can enter from the feeding plate and can be transported and transferred in the track better.

The looping mechanism further comprises a belt-guide-frame assembly, inside which the track 42 and the transport drive group are arranged, the belt-guide-frame assembly comprising at least one movable cover part, the cover part having an operating position and an open position,

during the forward transport of the strap 20, the cover portion is in the operative position and covers at least a portion of the track 42, the track 42 and the cover portion cooperating to form a channel for the strap 20 to pass through and restrict its removal; the width of the uncovered portion track 42 is less than the width of the strap 20 to be delivered when the cover portion is in the operative position. Thus, when the belt is positioned in the channel, the belt can be prevented from falling off during transportation due to the blocking of the covering part.

During the tightening back of the strap 20, the cover portion is in the open position and does not cover the track 42, so that the strap 20 can be disengaged from the track 42 to be tightened around the object to be packed.

Specifically, the covering member includes a front frame 51 and a rear frame 52 provided on both sides of the rail 42, the front frame 51 being movable forward and backward relative to the rear frame 52 (the front frame 51 and the rear frame 52 are moved toward and away from each other by the driving means), and the front frame 51 and the rear frame 52 being moved toward each other and covering a part of the rail 42 during the forward transfer of the belt 20; during the process of tightening the strap 20 backwards, the front frame 51 and the rear frame 52 move away from each other and disengage from the working area of the rail 42. The opposite surfaces of the front frame 51 and the rear frame 52 are provided with guide belt strips 53, and the guide belt strips 53 can block or separate from the working area of the track 42; during the forward conveying process of the belt 20, the two belt guide strips 53 approach each other to a set position, and the distance between the two belt guide strips 53 is smaller than the width of the belt 20; the guide strip 53 and the belt assembly 44 form the track 42 therebetween for tape transfer. The design of the strap 53 can also guide the strap, introduce it into the track 42 from the beginning, adjust the direction of movement in the subsequent process; the front frame 51 is connected with the rear frame 52 through the tension spring 92, the front and rear frames move back and forth to conveniently adjust the belts fed into the track, so that the belts can be better attached to the belt assembly for conveying, and meanwhile, the belts can be adjusted according to the width of the belts, so that the belt conveyor is suitable for belts with different types and sizes.

The driving device for driving the front frame 51 and the rear frame 52 to move relative to each other is specifically as follows:

the left side and the right side of the front frame 51 and the rear frame 52 are respectively provided with a left sliding plate 54 and a right sliding plate 55, the left sliding plate 54/the right sliding plate 55 move up and down under the driving of the second driving motor 32, and the left sliding plate 54 and the right sliding plate 55 are connected through a steel wire component; fixing plates 56 are arranged on the left and right sides of the front frame 51 and the rear frame 52, a bump 561 is arranged on the fixing plates 56, and a sliding track 541 for the bump 561 to slide is arranged on the side edges of the left sliding plate 54 and the right sliding plate 55. As shown in fig. 11, the sliding track is curved with a concave center, so that the left and right

sliding plates

54 and 55 can make the distance between the protrusions 561 on the front and

rear frames

51 and 52 larger or smaller when moving up and down, thereby achieving the front and rear relative movement between the front and

rear frames

51 and 52.

The steel wire assembly comprises a left wire wheel 571 and a right wire wheel 572 which are positioned above the left sliding plate 54 and the right sliding plate 55, a steel wire 573 is tensioned between the left wire wheel 571 and the right wire wheel 572, and two ends of the steel wire 573 are respectively fixed with the left sliding plate 54 and the right sliding plate 55; the second driving motor 32 is provided with a gear box 321, the output end of the gear box 321 is provided with a first cam assembly, the first cam assembly comprises a fourth cam 64, the left sliding plate 54/the right sliding plate 55 is provided with a fourth roller 542, and the fourth roller 542 is driven by the fourth cam 64 to reciprocate up and down. The left sliding plate 54 and the right sliding plate 55 can synchronously move up and down through a motor and a cam, and the synchronism is high and the cost is saved.

The head ends of the front frame 51 and the rear frame 52 respectively expand outwards to form an outward-spreading introducing port 50, and the introducing port 50 faces to the tail end of the feeding plate 41, so that the tapes can conveniently enter the introducing port after passing through the feeding plate; the upper part of the tail end of the feeding plate 41 is provided with a guide belt plate 58, the lower end of the guide belt plate 58 is opened towards the introducing port 50, the front end of the belt 20 enters the introducing port 50 along the feeding plate 41, passes through the track 42 and then advances towards the introducing port 50 along the guide belt plate 58, and the belt is conveyed by one turn along the track to complete the winding of the belt on the object to be packaged. The fusion welding mechanism and the tape cutting mechanism are arranged between the introducing port 50 and the tape guide plate 58.

The vacuum device is arranged on one side of the square frame-shaped installation part and comprises a fan 8, the fan 8 discharges air in the square frame-shaped installation part to generate negative pressure to form a vacuum-like state, so that the belt 20 can be better attached to the rail 42 and moves under the driving of the conveying driving group, and the belt assembly 44 is a belt which can move to reduce belt conveying friction.

As shown in fig. 14, the belt assembly 44 includes an intermediate timing pulley 404 that receives the belt delivered by the previous timing pulley and transfers it to the next timing pulley; a plurality of synchronous belt grooves 402 are arranged on the middle synchronous belt wheel; the synchronous belt 403 between the middle synchronous pulley and the previous synchronous pulley and the synchronous belt 401 between the middle synchronous pulley and the next synchronous pulley are arranged in the synchronous belt groove 402 at intervals, and the design enables the belt to be transmitted from the previous synchronous belt to the next synchronous belt and to be smoothly transmitted to form a loop knot; if the belt only covers one synchronous belt in the previous transmission process, two synchronous belts are necessarily covered in the next transmission process; therefore, the width of the conveying belt covers at least two synchronous belts during a certain transfer.

A movement seat 71 is arranged in the frame, a photoelectric sensing switch 713, the tightening mechanism, the fusion welding mechanism and the tape cutting mechanism are arranged on the movement seat 71, after the tape 20 moves for a circle along the track 42, the tightening mechanism tightens the tape 20, and the tape 20 is fused and cut off through the fusion welding mechanism and the tape cutting mechanism.

The specific structure and motion mode of the tightening mechanism are as follows:

as shown in fig. 5, the tightening mechanism includes a tightening motor 731, a tightening rocker 732, a tightening plate 733, a tightening driving wheel 734 and a tightening wheel 735, one end of the tightening plate 733 is connected to the tightening rocker 732, the other end of the tightening plate 733 is connected to the tightening wheel 735 through a connecting assembly, the tightening motor 731 is connected to the tightening driving wheel 734 and drives the tightening driving wheel to rotate, the feeding plate 41 is located between the tightening driving wheel 734 and the tightening wheel 735, the slotted plate 45 and the feeding plate 41 are provided with a second through groove 452, and the outer side of the tightening driving wheel 734 is located in the second through groove 452.

The second driving motor 32 is provided with a gear box 321, the output end of the gear box 321 is provided with a second cam assembly, the second cam assembly comprises a first cam 61, the binding rocker 732 is provided with a first roller 736, and the first roller 736 is driven by the first cam 61 to reciprocate; when the first cam 61 drives the tightening rocker 732 to move downwards, the tightening rocker 732 drives the tightening connecting plate 733 to move downwards, so as to drive the tightening pressure wheel 735 to press downwards, the tightening pressure wheel 735 presses the belt 20 on the feeding plate 41, meanwhile, the tightening motor 731 drives the tightening driving wheel 734 to rotate, and the belt is driven to move reversely under the action of the tightening driving wheel 734 and the tightening pressure wheel, so that the function of tightening the belt is realized.

The specific structure and the motion mode of the tape cutting mechanism are as follows:

as shown in fig. 7 and 8, the tape cutting mechanism comprises a base 721 and a cutter 722 for cutting the tape 20, the welding mechanism comprises an ironing head 723 for melting and adhering the tape 20, a front knife 726 is arranged on the base 721 through an elastic component, and the front knife 726 is positioned between the cutter 722 and the end of the feeding plate 41; a side sliding plate 724 is arranged on the base 721, a sliding rail 711 matched with the side sliding plate 724 is arranged on the movement seat 71, and the sliding plate 724 moves up and down in the sliding rail 711; the cutter 722 is directly fixed on the upper end face of the base 721 through a bolt, a gasket is pressed between the cutter 722 and the base 721, the ironing head 723 is an ultrasonic ironing head, and the ultrasonic ironing head is safe and reliable in belt ironing, does not need to be heated in advance, and has low requirements on belts and high applicability; the iron 723 is provided in the center of the base 721; the cutter 722 comprises a mounting seat 728 connected with the base 721 and a cutting edge 729 positioned at the upper end of the mounting seat 728, and the mounting seat 728 is provided with a through hole 720 through which the upper end of the ironing head 723 penetrates; the front knife 726 is provided with a guide hole 727 for the tape 20 to pass through, and the tail end of the feeding plate 41 extends into the guide hole 727 so as to feed the tape 20 into the guide hole 727; the elastic component comprises a screw 75 and a spring 76 sleeved outside the screw 75, and the upper end and the lower end of the screw 75 are respectively connected with the front knife 726 and the base 721.

The second driving motor 32 is provided with a gear box 321, the output end of the gear box 321 is provided with a second cam assembly, the second cam assembly comprises a third cam 63 coaxially arranged with the first cam 61, the side sliding plate 724 is connected with a third roller 725, and the third roller 725 is driven by the third cam 63 to reciprocate up and down, so as to drive the base 721 on the side sliding plate 724 to move up and down.

As shown in fig. 6, a movable upper sliding plate 741 and a sliding component for driving the upper sliding plate 741 to move are disposed on the movement base 71, and the upper sliding plate 741 is located above the cutting knife 722 and the ironing head 723, and is used for assisting in pressing the tape, so that the tape can be conveniently processed by the ironing head and the cutting knife. The sliding assembly comprises a sliding plate rocker arm 742, a rocker shaft 743 and a sliding plate control rod 744, the upper end of the sliding plate rocker arm 742 is connected with the upper sliding plate 741, the lower end of the sliding plate rocker arm 742 and the lower end of the sliding plate control rod 744 are sleeved outside the rocker shaft 743, the second cam assembly comprises a second cam 62, a second roller 745 is arranged on the sliding plate control rod 744, and the second roller 745 is driven by the second cam 62 to reciprocate. After the tape winds around the rail for one circle, the tape continues to advance along the lower end of the tape guide plate 58, and when the tape advances to the area above the ironing head and the cutter and below the upper sliding plate 741, the cam 63 drives the whole three-knife structure (the front knife 726, the cutter 722 and the ironing head 723) to ascend; at this time, the front knife 726 firstly pushes the tape against the lower side of the upper sliding plate 741, then the tightening mechanism retracts the tape (the retracted tape is the tape penetrating into the guide hole 727 on the front knife 726), after the retracted tape reaches a set distance, the cam 63 continues to rotate until the ultrasonic wave ironing head presses the upper and lower layers of tapes against the lower side of the upper sliding plate 741, the ultrasonic wave ironing head is started and the upper and lower layers of tapes are ironed into a whole, and the ultrasonic wave ironing head stops working; the cam 63 continues to drive the three-knife structure to ascend, the cutter 722 cuts the belt, the cam 63 rotates over the highest point, the three-knife structure descends and resets, and the upper sliding plate 741 moves outwards; at this time, the strap is completely wrapped on the product, and after the product is taken away, the upper sliding plate returns to the initial position for the next binding.

As shown in fig. 5, the movement seat 71 is provided with a positioning rod 712, and the tightening rocker 732 and the base 721 are connected to the positioning rod 712 through a tension spring 83, so as to facilitate the resetting of the tightening rocker 732 and the base 721.

A belt feeding rocker 771 is further arranged in the rack, a rubber wheel 772 is arranged on the belt feeding rocker 771, the rubber wheel 772 is positioned above the feeding plate 41, and the belt feeding rocker 771 is connected with the rack 1 through a tension spring 84; the belt feeding rocker 771 is provided with an adjusting plate 773, one end of the adjusting plate 773 is connected with the tension spring 84, the other end of the adjusting plate 773 is provided with a shaft sleeve, the rubber wheel 772 is sleeved on the shaft sleeve, and the belt feeding rubber wheel is positioned above the driving roller 33 and is matched with the driving roller 33 to convey the belt forward along the feeding plate 41.

The utility model discloses a theory of operation:

after the start-up operation, the driving roller 33 is driven by the first driving motor 31 to rotate, and simultaneously the belt is conveyed forward along the feeding plate 41 by cooperating with the rubber wheel 772, the front end of the belt passes through the tail end of the feeding plate 41 and enters the track 42 along the leading-in opening 50, the first driving motor 31 is connected with the belt transmission set 34 and drives the transmission wheel 43 to rotate, so that the belt is driven to move in the track, in the process, the front frame 51 and the rear frame 52 move under the driving of the second driving motor 32 and the left sliding plate 54 and the right sliding plate 55 to adapt to the belt and stabilize the belt to be conveyed in the track, and a loop is formed on the object outside the object.

The utility model discloses be provided with and cover the part, make the passageway can follow the belt and carry out the change of adaptability according to the relative movement between the part that covers for the belt can be transported better in the passageway, promotes transportation degree of accuracy and efficiency, and can adapt to the belt of different widths.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A loop mechanism of a banding machine is characterized by comprising

The plurality of driving wheels are arranged on the rack of the belt binding machine;

the belt assembly is wound between the transmission wheels to form a track and is used for transmitting the belt;

a vacuum device for sucking the belt on the surface of the belt assembly;

a tape guide frame assembly including at least one movable cover member having an operative position and an open position, the cover member in the operative position covering at least a portion of the track, the track and cover member cooperating to define a channel for the tape to pass through and restrict its removal; the cover portion does not cover the track when in the open position.

2. The looping mechanism of the belt bundling machine according to claim 1, wherein: the width of the uncovered portion track is less than the width of the strap to be delivered when the cover portion is in the operative position.

3. The looping mechanism of the belt bundling machine according to claim 2, wherein: the covering member includes a front frame and a rear frame which are respectively provided on the front side and the rear side of the rail, and the front frame and the rear frame can be moved toward or away from each other by a driving device.

4. The looping mechanism of the belt bundling machine according to claim 3, wherein: the opposite surfaces of the front frame and the rear frame are provided with guide belt strips, and the guide belt strips can shield or separate from a working area of the track; the two guide belts approach each other to a set position during the forward conveying process of the belt, and the distance between the two guide belts is smaller than the width of the belt; the two guide belt strips and the belt assembly enclose the channel for the belt to pass through.

5. The looping mechanism of the belt bundling machine according to claim 3, wherein: the driving device is: the left side and the right side of the front frame and the rear frame are provided with fixed plates, the fixed plates are provided with lugs, the left side and the right side of the front frame and the rear frame are movably provided with left sliding plates and/or right sliding plates, and the side edges of the left sliding plates and the right sliding plates are provided with sliding rails for the lugs to slide in or out; the front frame and the rear frame are reset through a tension spring.

6. The looping mechanism of the belt bundling machine according to claim 5, wherein: the driving device further comprises a second driving motor, a gear box is arranged on the second driving motor, a first cam assembly is arranged at the output end of the gear box and comprises a fourth cam, and a fourth roller is arranged on the left/right sliding plate and driven by the fourth cam to reciprocate.

7. The looping mechanism of the belt bundling machine according to claim 5 or 6, wherein: the left sliding plate and the right sliding plate are connected through the steel wire assembly, the steel wire assembly comprises a left wire wheel and a right wire wheel which are positioned above the left sliding plate and the right sliding plate, a steel wire is arranged between the left wire wheel and the right wire wheel in a tensioning mode, and two ends of the steel wire are fixed with the left sliding plate and the right sliding plate respectively.

8. The looping mechanism of the belt bundling machine according to any one of claims 3-6, wherein: the front ends of the front frame and the rear frame are provided with outward-spreading guide openings, a feeding plate for conveying the tapes into the track is arranged in the rack, and the guide openings face the tail end of the feeding plate; a belt guide plate is arranged above the tail end of the feeding plate, the lower end opening of the belt guide plate faces the introducing port, the front end of the belt enters the introducing port along the feeding plate, and the belt advances towards the introducing port along the belt guide plate after passing through the rail; and a fusion welding mechanism and a tape cutting mechanism are arranged between the leading-in port and the tape guide plate.

9. The looping mechanism of the belt bundling machine according to claim 1, wherein: the vacuum device comprises a fan arranged on one side of the track, and the fan exhausts air in the track to form a negative pressure state, so that the belt is attached to the track.

10. The looping mechanism of the belt bundling machine according to claim 1, wherein: the belt component comprises a middle synchronous belt wheel, and the middle synchronous belt wheel receives the belt conveyed by the previous synchronous belt wheel and transmits the belt to the next synchronous belt wheel; the middle synchronous belt wheel is provided with a plurality of synchronous belt grooves; the synchronous belts between the middle synchronous pulley and the previous synchronous pulley and the synchronous belts between the middle synchronous pulley and the next synchronous pulley are arranged in the synchronous belt groove at intervals.