CN219097192U

CN219097192U - Strapping machine

Info

Publication number: CN219097192U
Application number: CN202223572751.XU
Authority: CN
Inventors: 娄炳云
Original assignee: Wenzhou Dongmai Machinery Co ltd
Current assignee: Wenzhou Dongmai Machinery Co ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-05-30
Anticipated expiration: 2032-12-31

Abstract

The utility model relates to a binding machine with lower cost and better coordination. The strapping machine comprises a strapping machine core, wherein the strapping machine core comprises an organic box, and is characterized in that: the first top belt mechanism, the second top belt mechanism, the heat sealing mechanism and the belt cutting knife are arranged in the case. The first top block, the second top block, the heat sealing block and the belt cutting knife of the strapping machine only adopt one group of cam transmission to realize the action, and one group of cams only need one power source for driving, so the strapping machine has lower manufacturing cost and better action coordination.

Description

Strapping machine

Technical Field

The present utility model relates to a strapping machine.

Background

A block is a building material. Before transportation, a certain number of blocks need to be piled up into a pile, and then the pile is bundled by a binding belt, so that the blocks are prevented from being scattered due to vibration during transportation. The bundling of the blocks is typically accomplished by a bundling machine. The prior strapping machine generally comprises a frame, a strapping machine core, a lifting seat and a deck, wherein the strapping tape is positioned in the deck. When binding, the travelling frame is sleeved outside the building block pile, the building block pile is bound by the binding tape along with the traction of the binding tape by the binding tape core, then the binding tape core cuts off the binding tape and heat-seals the binding tape head, and the lifting seat can move up and down with the travelling frame, so that multiple binding in height is realized. Therefore, the bundling machine core is critical to the bundling effect of the bundling belt. At present, two problems exist in the common bundling machine core: the first, the existing movement each movements are realized and controlled through the independent power source, there are high costs, bad problem of the cooperativity, etc.; the second, current core is including main traction wheel, from traction wheel and the pivoted traction power supply of drive main traction wheel, through the drive of traction power supply, main traction wheel and from traction wheel cooperation rotation are carried out the ribbon (send the area for short), when the ribbon tie ties the material, traction power supply drive main traction wheel and is from traction wheel reversal, traction ribbon returns and removes (send the area for short), the ribbon just contracts gradually, however need tie up the loose point to some waiting packagings, need tie up the tight point and send the area and receive the area through main traction wheel simultaneously to some waiting packagings, because the restriction of structure, the elasticity layer degree of difficult control tie up.

Disclosure of Invention

In view of the defects existing in the prior art, the utility model innovatively improves the binding machine with lower cost and better synergy.

The strapping machine comprises a strapping machine core, wherein the strapping machine core comprises an organic box, and is characterized in that: the machine case is internally provided with a first top belt mechanism, a second top belt mechanism, a heat sealing mechanism and a belt cutting knife, wherein the first top belt mechanism comprises a first top block, a first spring, a first transmission arm and a first spring, the first spring can drive the first top block to move forwards, and the first transmission arm can drive the first top block to move backwards; the first top block is provided with a perforation for the binding tape to pass through; the second top belt mechanism comprises a second top block, a second spring and a second transmission arm, wherein the second spring can drive the second top block to move forwards, and the second transmission arm can drive the second top block to move backwards; the heat sealing mechanism comprises a heat sealing block, a heat sealing spring and a heat sealing transmission arm, wherein the heat sealing spring can drive the heat sealing block to move forwards, and the heat sealing transmission arm can drive the heat sealing block to move backwards; the belt cutting knife is in transmission connection with the heat sealing transmission arm, the belt cutting knife is positioned between the first ejector block and the heat sealing block and is attached to one side of the first ejector block, the heat sealing block is positioned between the first ejector block and the second ejector block, a cover plate is arranged in front of the first ejector block, the second ejector block and the heat sealing block and is connected to the cover plate sliding seat, the cover plate sliding seat can be arranged on the support in a sliding manner up and down, the cover plate sliding seat is hinged with one end of the cover plate transmission arm, the middle part of the cover plate transmission arm is hinged to the support, and the other end of the cover plate transmission arm is connected with the cover plate stress wheel; the first jacking block, the second jacking block and the heat sealing block can jack the ribbon onto the cover plate; the lower end of a first transmission arm of the first top belt mechanism is hinged with a first top block, the middle part of the first transmission arm is rotatably arranged on a support, and the upper end of the first transmission arm is provided with a first stress wheel; the lower end of a second transmission arm of the second top belt mechanism is hinged with a second top block, the middle part of the second transmission arm is rotatably arranged on the support, and the upper end of the second transmission arm is provided with a second stress wheel; the lower end of a heat-sealing transmission arm of the heat-sealing mechanism is in transmission connection with the heat-sealing block, the middle part of the heat-sealing transmission arm is rotatably arranged on the support, and the upper end of the heat-sealing transmission arm is provided with a heat-sealing stress wheel; the cam transmission shaft is rotatably arranged on the support and is connected with the transmission motor in a transmission manner, the cam transmission shaft is provided with a cover plate cam, a first cam, a second cam and a heat sealing cam, the cover plate cam acts on the cover plate stress wheel, the first cam acts on the first stress wheel, the second cam acts on the second stress wheel, and the heat sealing cam acts on the heat sealing stress wheel.

The lower extreme of heat-seal transmission arm is articulated with cutting the area blade holder, it connects on cutting the area blade holder to cut the area blade, be equipped with the guide slot on the cutting area blade, be equipped with the guide pillar on the heat sealing piece, in the guide slot was located to the guide pillar, install the eccentric shaft rotationally on the support, the eccentric shaft is connected with the heat-seal motor transmission, be connected with the heat-seal transfer line between eccentric shaft and the heat sealing piece, the one end cover of heat-seal transfer line is on the eccentric shaft, the other end of heat-seal transfer line cup joints on the spliced pole on the heat sealing piece.

A tape feeding mechanism, a tape tightening mechanism and a tape outlet frame are sequentially arranged in the case along the tape feeding direction; the deck comprises a deck driving wheel and a deck driven wheel, and the deck driving wheel and the deck driven wheel can be matched to realize belt feeding and belt receiving; the belt tightening mechanism comprises a belt tightening driving wheel and a belt tightening driven wheel, the belt tightening driving wheel and the belt tightening driven wheel can be matched with a belt tightening, the belt tightening driving wheel is arranged on a belt tightening wheel shaft through a one-way bearing, and the discharge end of the belt outlet frame corresponds to the perforation of the first ejector block.

The belt tightening driven wheel is rotatably arranged on the wheel seat, a machine core seat is arranged in the machine case, a wheel seat swing arm is rotatably connected to the machine core seat, one end of the wheel seat swing arm is hinged to the wheel seat, the other end of the wheel seat swing arm is provided with a belt pressing spring capable of driving the wheel seat swing arm to rotate, the belt pressing spring can enable the wheel seat to move towards the belt tightening driving wheel, the other end of the wheel seat swing arm is in transmission connection with the belt loosening driving assembly, and the belt loosening driving assembly can drive the wheel seat swing arm to rotate and enable the wheel seat to leave the belt tightening driving wheel.

The belt loosening driving assembly comprises a belt loosening cam, a belt loosening driving rod and a belt loosening swing arm, wherein the belt loosening cam is connected to a cam driving shaft, a cam surface is arranged on the lower surface of the belt loosening cam, a shaft sleeve is arranged on a machine core seat, the belt loosening driving rod is axially movably arranged in the shaft sleeve, a force bearing wheel is arranged at the upper end of the belt loosening driving rod and acts on the cam surface of the belt loosening cam, the lower end of the belt loosening driving rod is hinged to one end of the belt loosening swing arm, the belt loosening swing arm is rotatably arranged on the machine core seat, and the other end of the belt loosening swing arm is hinged to the wheel seat swing arm.

The two belt tightening driven wheels are arranged and are arranged on the wheel seat, and the two belt tightening driven wheels are close to the belt tightening driving wheel; the driving gear is arranged on a tightening belt wheel shaft of the tightening belt driving wheel, the driven gear is arranged on a driven wheel shaft of the tightening belt driven wheel, and the driven gear is meshed with the driving gear.

The belt driven wheel is arranged at one end of the belt driven wheel, the belt driven wheel is rotatably arranged on the machine core seat, the other end of the belt driven wheel is provided with a belt spring which can enable the belt driven wheel to rotate, and the belt spring can enable the belt driven wheel to move towards the belt driving wheel.

According to the strapping machine provided by the utility model, the first top block, the second top block, the heat sealing block and the strap cutter only adopt one group of cam transmission to realize the action, and one group of cams only need one power source for driving, so that the manufacturing cost is lower, and the action cooperativity is better.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a schematic view of the internal structure of the movement body;

FIG. 3 is a schematic view of the structure of the first top belt mechanism, the second top belt mechanism, and the heat seal mechanism;

FIG. 4 is a schematic view of the structure of the first top block, the second top block, the heat sealing block and the tape cutter;

FIG. 5 is a diagram showing the connection relationship of the taping knife, heat seal block and taping knife holder;

FIG. 6 is a schematic view of the deck and the tightening mechanism;

FIG. 7 is a schematic view of the deck structure;

FIG. 8 is a schematic structural view of a tightening mechanism;

fig. 9 is a schematic diagram of bundling.

Detailed Description

As shown in fig. 1, the strapping machine comprises a frame a, a strapping machine core C, a lifting seat B and a band feeding frame D, wherein the strapping machine core C is mounted on the lifting seat B, the lifting seat B is arranged on the frame a in a lifting manner, the band feeding frame D is mounted on the lifting seat B, and the band is arranged in the band feeding frame D, and the band can be contracted to bind the building blocks by driving the strapping machine core C. The specific bundling principle is as follows: after the tie encloses the blocks by the feeding frame D, as shown in fig. 9, the front end of the tie is first pressed against the cover plate 60 by the first ejector block 70, then the tie is contracted, the second ejector block 80 ejects the continuous portion of the tie against the cover plate 60 after the contraction is completed, then the heat-seal block 90 moves forward simultaneously with the tape cutter 98, the tape cutter 98 cuts the continuous portion of the tie, the heat-seal block 90 heat-seals the cut end of the tie and the front end of the tie together, and then the cover plate 60 is removed, thus completing the bundling work.

The specific structure of the strapping machine core C will be specifically described below.

As shown in fig. 2 and 3, the strapping machine core includes an organic housing in which a first top strap mechanism 7, a second top strap mechanism 8, a heat seal mechanism 9, and a strap cutter 98 are mounted. As shown in fig. 4, the first top belt mechanism 7 includes a first top block 70, a first spring 74, and a first driving arm 71, where the first spring 74 can drive the first top block 70 to move forward, and the first driving arm 71 can drive the first top block 70 to move backward; the first top block 70 has perforations 700 through which the tie passes; the second top belt mechanism 8 comprises a second top block 80, a second spring 84 and a second driving arm 81, wherein the second spring 84 can drive the second top block 80 to move forwards, and the second driving arm 81 can drive the second top block 80 to move backwards; the heat sealing mechanism 9 comprises a heat sealing block 90, a heat sealing spring 94 and a heat sealing transmission arm 91, wherein the heat sealing spring 94 can drive the heat sealing block 90 to move forwards, and the heat sealing transmission arm 91 can drive the heat sealing block 90 to move backwards; the belt cutting knife 98 is in transmission connection with the heat seal transmission arm 91, the belt cutting knife 98 is positioned between the first ejector block 70 and the heat seal block 90 and is attached to one side of the first ejector block 70, the heat seal block 90 is positioned between the first ejector block 70 and the second ejector block 80, the cover plate 60 is arranged in front of the first ejector block 70, the second ejector block 80 and the heat seal block 90, the cover plate 60 is connected to the cover plate sliding seat 61, the cover plate sliding seat 61 can be arranged on the support 62 in a sliding manner up and down, the cover plate sliding seat 61 is hinged with one end of the cover plate transmission arm 66, the middle part of the cover plate transmission arm 66 is hinged on the support 62, and the other end of the cover plate transmission arm 66 is connected with a cover plate stress wheel; the first top block 70, the second top block 80, and the heat seal block 90 may all push the tie up to the cover plate 60; the lower end of a first transmission arm 71 of the first top belt mechanism 7 is hinged with a first top block 70, the middle part of the first transmission arm 71 is rotatably arranged on the support 62, and the upper end of the first transmission arm 71 is provided with a first stress wheel 72; the lower end of a second transmission arm 81 of the second top belt mechanism 8 is hinged with a second top block 80, the middle part of the second transmission arm 81 is rotatably arranged on the support 62, and the upper end of the second transmission arm 81 is provided with a second stress wheel 82; the lower end of a heat seal transmission arm 91 of the heat seal mechanism 9 is in transmission connection with a heat seal block 90, the middle part of the heat seal transmission arm 91 is rotatably arranged on the support 62, and the upper end of the heat seal transmission arm 91 is provided with a heat seal stress wheel 92; the support 62 is rotatably provided with a cam transmission shaft 63, the cam transmission shaft 63 is in transmission connection with the transmission motor 67, the cam transmission shaft 63 is provided with a cover plate cam, a first cam 73, a second cam 83 and a heat sealing cam 93, the cover plate cam acts on the cover plate stress wheel, the first cam 73 acts on the first stress wheel 72, the second cam 83 acts on the second stress wheel 82, and the heat sealing cam 93 acts on the heat sealing stress wheel 92.

The concrete working principle is as follows: after the tie passes through the perforation 700 of the first ejector block 70, the object to be bundled is enclosed, the cover plate transmission arm 66 swings under the action of the cover plate cam, the cover plate transmission arm 66 drives the cover plate 60 to move downwards, then the first ejector block 70 moves forwards under the action of the first spring 74, the front end of the tie is pressed on the cover plate 60 by the first ejector block 70, the tie is contracted, after the contraction is finished, the second ejector block 80 moves forwards under the action of the second spring 84, the continuous part of the tie is propped on the cover plate 60, then the heat sealing block 90 and the tape cutting knife 98 move forwards simultaneously under the action of the heat sealing spring 94, the tape cutting knife 98 cuts off the continuous part of the tie (penetrates through the perforation 700 of the first ejector block 70), the heat sealing block 90 heat seals the cut end of the tie and the front end of the tie together, and then the cover plate transmission arm 66 drives the cover plate 60 to move away, so that the bundling work is finished. Then, the first cam 73 drives the first driving arm 71 to rotate, and the first driving arm 71 drives the first top block 70 to return; the second cam 83 drives the second driving arm 81 to rotate, and the second driving arm 81 drives the second top block 80 to return; the heat seal cam 93 drives the heat seal drive arm 91 to rotate, and the heat seal drive arm 91 drives the heat seal block 90 to return together with the tape cutter 98. Because the first cam 73, the second cam 83, the heat sealing cam 93 and the cover plate cam are all arranged on the cam transmission shaft 63, and the cam transmission shaft 63 is in transmission connection with the transmission motor 67, the action of all executing parts can be driven by only one power source (the transmission motor 67), the structure not only greatly reduces the production cost, but also improves the cooperativity of executing actions (only the design of each cam is needed).

From the above, the heat sealing block 90 and the tape cutter 98 move back and forth together, and if the heat sealing block 90 adopts electric heat sealing, the heat sealing block 90 and the tape cutter 98 only need to be directly connected together, however, the electric heat sealing effect is poor and the heat sealing is uneven. In order to obtain a better heat sealing effect, the utility model adopts high-frequency friction, namely the ribbon is heated and melted in a high-frequency friction mode. In order to enable the heat sealing block 90 to vibrate at high frequency and drive the belt cutting knife 98 to move back and forth together, the lower end of the heat sealing transmission arm 91 is hinged with the belt cutting knife seat 95 as shown in fig. 5, the belt cutting knife 98 is connected with the belt cutting knife seat 95, a guide groove 980 is arranged on the belt cutting knife 98, a guide pillar 900 is arranged on the heat sealing block 90, the guide pillar 900 is arranged in the guide groove 980, an eccentric shaft 97 is rotatably arranged on the support 62 as shown in fig. 3, the eccentric shaft 97 is in transmission connection with the heat sealing motor 68, a heat sealing transmission rod 96 is connected between the eccentric shaft 97 and the heat sealing block 90, one end of the heat sealing transmission rod 96 is sleeved on the eccentric shaft 97, and the other end of the heat sealing transmission rod 96 is sleeved on a connecting column on the heat sealing block 90. When the heat-seal motor 68 is in operation, the eccentric shaft 97 is driven to rotate, and the eccentric shaft 97 is of an eccentric structure, so that the heat-seal transmission rod 96 can be driven to move up and down, and the heat-seal transmission rod 96 drives the heat-seal block 90 to move up and down rapidly, so that the heat-seal block 90 can generate high-frequency friction with the binding belt, and the binding belt is heat-sealed. With this structure, when the heat seal transmission arm 91 drives the tape cutter holder 95 to move backward, the heat seal block 90 and the tape cutter 98 can be simultaneously driven to move backward together, and the heat seal block 90 can generate high-frequency friction.

As shown in fig. 6, in order to feed and tighten the binding tape, the utility model further provides a feeding mechanism 1, a tightening mechanism 2 and a tape outlet frame 3 in sequence along the feeding direction in the case (the discharge end of the tape outlet frame 3 corresponds to the perforation 700 of the first top block 70), namely after the binding tape enters the movement, the binding tape passes through the feeding mechanism 1, the tightening mechanism 2 and the tape outlet frame 3 in sequence, finally passes through the perforation 00 entering the first top block 70 from the tape outlet frame 3, and then winds around the object to be bound.

As shown in fig. 7, the deck 1 includes a deck driving wheel 10 and a deck driven wheel 11 (the deck driving wheel 10 is in transmission connection with a power source), and the deck driving wheel 10 and the deck driven wheel 11 can cooperate to realize feeding and rewinding. When the strapping is to be fed, the strapping mechanism 1 pulls the strapping to move forward to enclose the object to be strapped, after the object to be strapped is enclosed, the end of the strapping is pressed by the first top block 70, and the strapping mechanism 1 pulls the strapping to move backward to retract the strapping, so that the strapping is tightened, and the object to be strapped is strapped. Since the traction force of the deck 1 is not very strong, only a relatively loose strapping state can be achieved, which is also sufficient for some objects to be strapped.

As shown in fig. 8, the belt tightening mechanism 2 includes a belt tightening driving wheel 20 and a belt tightening driven wheel 21 (the belt tightening driving wheel 20 is driven by a power source to realize active rotation), the belt tightening driving wheel 20 and the belt tightening driven wheel 21 can be matched to tighten and retract a belt, the belt tightening driving wheel 20 is arranged on a belt tightening wheel shaft 24 through a one-way bearing, thus the belt tightening driving wheel 20 can only realize one-way rotation, when the belt feeding mechanism 1 feeds a belt, the belt tightening driving wheel 20 does not rotate, when the belt tightening mechanism 1 also needs to tighten and retract the belt after the belt is completed, the belt tightening driving wheel 20 rotates to drive the strapping belt to move back, and through the structure, the belt tightening and retracting can be realized.

Because the deck 1 and the tightening mechanism 2 are adopted, the deck 1 can realize loose band collection while realizing band feeding, and the tightening mechanism 2 can tighten and tighten the band on the basis of band collection of the deck, thereby meeting the demands of different binding tightness.

The larger the interaction force between the tightening driving wheel 20 and the tightening driven wheel 21 is, the less slip will occur when the tightening driving wheel and the tightening driven wheel are matched for traction, and the larger the traction force is, the tighter the strapping is also received. In order to generate larger acting force between the two, the belt-tightening driven wheel 21 is rotatably arranged on the wheel seat 22, the wheel seat swing arm 23 is rotatably connected to the movement seat 6, one end of the wheel seat swing arm 23 is hinged with the wheel seat 22, the other end of the wheel seat swing arm 23 is provided with the belt pressing spring 4 which can drive the wheel seat swing arm 23 to rotate, the belt pressing spring 4 can enable the wheel seat 22 to move towards the belt-tightening driving wheel 20, the other end of the wheel seat swing arm 23 is in transmission connection with the belt loosening driving component, when the strapping is carried in, the belt loosening driving component can drive the wheel seat swing arm 23 to rotate and enable the 22 to leave the belt-tightening driving wheel 20, thus the distance between the belt-tightening driving wheel 20 and the belt-tightening driven wheel 21 is formed, the strapping is normally carried in, when the strapping is required to be carried out, the belt loosening driving component does not apply force to the wheel seat swing arm 23, the wheel seat swing arm 22 moves towards the belt-tightening driving wheel 20 under the action of the belt pressing spring 4, the belt tightening driving wheel 20 and the belt tightening driven wheel 21 are tightly close together, and the wheel seat is not slipped when the strapping is pulled. It should be noted that, because the thickness of the strapping tapes of different specifications is different, the pressure between the tightening driving wheel 20 and the tightening driven wheel 21 is different, and the strapping springs 4 of different specifications are replaced, so that the strapping machine is quite convenient.

The belt drive assembly can have a variety of configurations, provided that it is capable of driving the wheel-seat swing arm 23 to swing, an embodiment of which is specifically described below. As shown in fig. 8, the belt loosening driving assembly comprises a belt loosening cam 50 (the belt loosening cam 50 is connected to a cam transmission shaft 63, thus, only a transmission motor 67 is needed to reduce the production cost to the greatest extent), a belt loosening driving rod 51 and a belt loosening swing arm 53, the motor is in transmission connection with the belt loosening cam 50, the lower surface of the belt loosening cam 50 is provided with a cam surface, a shaft sleeve 52 is arranged on a machine core seat 6, the belt loosening driving rod 51 is axially movably arranged in the shaft sleeve 52, the upper end of the belt loosening driving rod 51 is provided with a force-bearing wheel 510, the force-bearing wheel 510 acts with the cam surface of the belt loosening cam 50, the lower end of the belt loosening driving rod 51 is hinged with one end of the belt loosening swing arm 53, the belt loosening swing arm 53 is rotatably arranged on the machine core seat 6, and the other end of the belt loosening swing arm 53 is hinged with the wheel seat swing arm 23. When the belt loosening device is in operation, the transmission motor 67 drives the belt loosening cam 50 to rotate, the belt loosening cam 50 can act on the belt loosening transmission rod 51 to drive the belt loosening transmission rod 51 to move downwards, the belt loosening swing arm 53 is driven to swing, the belt loosening swing arm 53 swings and the wheel seat swing arm 23 is driven to swing, and therefore the belt tightening driving wheel 20 is separated from the belt tightening driven wheel 21.

In order to increase the friction area and improve the tightening force, the two tightening driven wheels 21 are arranged on the wheel seat 22, the two tightening driven wheels 21 are close to the tightening driving wheel 20, the two tightening driven wheels 21 can improve the friction force by one time, and the tightening effect is better; in order to enable the belt-tightening driven wheel 21 to also actively rotate, the belt-tightening driving wheel 20 is provided with the driving gear 25 on the belt-tightening wheel shaft 24, the belt-tightening driven wheel 21 is provided with the driven gear 26 on the driven wheel shaft 27, and the driven gear 26 is meshed with the driving gear 25, so that when the belt-tightening driving wheel 20 actively rotates, the belt-tightening driven wheel 21 can also actively rotate in the opposite direction, and the traction force generated by the belt-tightening driven wheel 21 and the belt-tightening driving wheel 20 is larger, so that the belt-tightening effect is better.

Finally, it should be noted that, in order to enable a sufficient pressure to be generated between the driving pulley 10 and the driven pulley 11, as shown in fig. 7, the driven pulley 11 is mounted at one end of the swing arm 12, the swing arm 12 is rotatably mounted on the core seat 6, the other end of the swing arm 12 is provided with a spring 13 capable of rotating the swing arm 12, and the spring 13 is capable of moving the driven pulley 11 toward the driving pulley 10. By the action of the deck spring 13, the deck driven pulley 11 can be pressed against the deck driving pulley 10, so that a large force is formed between the deck driven pulley and the deck driving pulley, and the effect of pulling the strapping tape is better.

Claims

1. The utility model provides a strapper, is including the strapper core, the strapper core includes organic case, its characterized in that: the machine case is internally provided with a first top belt mechanism (7), a second top belt mechanism (8), a heat sealing mechanism (9) and a belt cutting knife (98), wherein the first top belt mechanism (7) comprises a first top block (70), a first spring (74) and a first transmission arm (71), the first spring (74) can drive the first top block (70) to move forwards, and the first transmission arm (71) can drive the first top block (70) to move backwards; the first top block (70) has perforations (700) through which the tie passes; the second top belt mechanism (8) comprises a second top block (80), a second spring (84) and a second transmission arm (81), wherein the second spring (84) can drive the second top block (80) to move forwards, and the second transmission arm (81) can drive the second top block (80) to move backwards; the heat sealing mechanism (9) comprises a heat sealing block (90), a heat sealing spring (94) and a heat sealing transmission arm (91), wherein the heat sealing spring (94) can drive the heat sealing block (90) to move forwards, and the heat sealing transmission arm (91) can drive the heat sealing block (90) to move backwards; the belt cutting knife (98) is in transmission connection with the heat sealing transmission arm (91), the belt cutting knife (98) is located between the first ejector block (70) and the heat sealing block (90) and is attached to one side of the first ejector block (70), the heat sealing block (90) is located between the first ejector block (70) and the second ejector block (80), a cover plate (60) is arranged in front of the first ejector block (70), the second ejector block (80) and the heat sealing block (90), the cover plate (60) is connected to the cover plate sliding seat (61), the cover plate sliding seat (61) can be arranged on the support (62) in a sliding mode, the cover plate sliding seat (61) is hinged to one end of the cover plate transmission arm (66), the middle of the cover plate transmission arm (66) is hinged to the support (62), and the other end of the cover plate transmission arm (66) is connected with the cover plate stress wheel. The first jacking block (70), the second jacking block (80) and the heat sealing block (90) can jack the ribbon onto the cover plate (60); the lower end of a first transmission arm (71) of the first top belt mechanism (7) is hinged with a first top block (70), the middle part of the first transmission arm (71) is rotatably arranged on a support (62), and a first stress wheel (72) is arranged at the upper end of the first transmission arm (71); the lower end of a second transmission arm (81) of the second top belt mechanism (8) is hinged with a second top block (80), the middle part of the second transmission arm (81) is rotatably arranged on the support (62), and a second stress wheel (82) is arranged at the upper end of the second transmission arm (81); the lower end of a heat seal transmission arm (91) of the heat seal mechanism (9) is in transmission connection with a heat seal block (90), the middle part of the heat seal transmission arm (91) is rotatably arranged on a support (62), and the upper end of the heat seal transmission arm (91) is provided with a heat seal stress wheel (92); the novel heat-seal device is characterized in that the support (62) is rotatably provided with a cam transmission shaft (63), the cam transmission shaft (63) is in transmission connection with the transmission motor (67), the cam transmission shaft (63) is provided with a cover plate cam, a first cam (73), a second cam (83) and a heat-seal cam (93), the cover plate cam acts on a cover plate stress wheel, the first cam (73) acts on a first stress wheel (72), the second cam (83) acts on a second stress wheel (82), and the heat-seal cam (93) acts on a heat-seal stress wheel (92).

2. A strapping machine in accordance with claim 1 wherein: the lower extreme and the cutting of heat-seal transmission arm (91) are articulated, cut take sword (98) and connect on cutting take blade holder (95), be equipped with guide slot (980) on cutting the area sword (98), be equipped with guide pillar (900) on heat-seal block (90), guide pillar (900) are located in guide slot (980), install eccentric shaft (97) on support (62) rotationally, eccentric shaft (97) are connected with heat-seal motor (68) transmission, be connected with heat-seal transfer line (96) between eccentric shaft (97) and heat-seal block (90), the one end cover of heat-seal transfer line (96) is on eccentric shaft (97), the other end of heat-seal transfer line (96) is cup jointed on the spliced pole on heat-seal block (90).

3. A strapping machine as in claim 1 or 2 wherein: a tape feeding mechanism (1), a tape tightening mechanism (2) and a tape discharging frame (3) are sequentially arranged in the case along the tape feeding direction; the deck (1) comprises a deck driving wheel (10) and a deck driven wheel (11), and the deck driving wheel (10) and the deck driven wheel (11) can be matched to realize belt feeding and belt receiving; the belt tightening mechanism (2) comprises a belt tightening driving wheel (20) and a belt tightening driven wheel (21), the belt tightening driving wheel (20) and the belt tightening driven wheel (21) can be matched with each other to tighten a belt, the belt tightening driving wheel (20) is arranged on a belt tightening wheel shaft (24) through a one-way bearing, and the discharge end of the belt outlet frame (3) corresponds to a perforation (700) of the first ejector block (70).

4. A strapping machine as in claim 3 wherein: the belt tightening driven wheel (21) is rotatably arranged on the wheel seat (22), a machine core seat (6) is arranged in the machine case, a wheel seat swing arm (23) is rotatably connected to the machine core seat (6), one end of the wheel seat swing arm (23) is hinged to the wheel seat (22), a belt pressing spring (4) capable of driving the wheel seat swing arm (23) to rotate is arranged at the other end of the wheel seat swing arm (23), the belt pressing spring (4) can enable the wheel seat (22) to move towards the belt tightening driving wheel (20), the other end of the wheel seat swing arm (23) is in transmission connection with the belt loosening driving assembly, and the belt loosening driving assembly can drive the wheel seat swing arm (23) to rotate and enable the wheel seat (22) to leave the belt tightening driving wheel (20).

5. A strapping machine in accordance with claim 4 wherein: the belt loosening driving assembly comprises a belt loosening cam (50), a belt loosening driving rod (51) and a belt loosening swing arm (53), wherein the belt loosening cam (50) is connected to a cam driving shaft (63), a cam surface is arranged on the lower surface of the belt loosening cam (50), a shaft sleeve (52) is arranged on a machine core seat (6), the belt loosening driving rod (51) can be axially movably arranged in the shaft sleeve (52), a force bearing wheel (510) is arranged at the upper end of the belt loosening driving rod (51), the force bearing wheel (510) acts on the cam surface of the belt loosening cam (50), the lower end of the belt loosening driving rod (51) is hinged to one end of the belt loosening swing arm (53), the belt loosening swing arm (53) is rotatably arranged on the machine core seat (6), and the other end of the belt loosening swing arm (53) is hinged to the swing arm (23).

6. A strapping machine in accordance with claim 5 wherein: the two belt tightening driven wheels (21) are arranged, the two belt tightening driven wheels (21) are arranged on the wheel seat (22), and the two belt tightening driven wheels (21) are close to the belt tightening driving wheel (20); a driving gear (25) is arranged on a tightening pulley shaft (24) of the tightening driving wheel (20), a driven gear (26) is arranged on a driven pulley shaft (27) of the tightening driven wheel (21), and the driven gear (26) is meshed with the driving gear (25).

7. A strapping machine as in claim 3 wherein: the belt driven wheel (11) is arranged at one end of the belt driven arm (12), the belt driven arm (12) is rotatably arranged on the machine core seat (6), the other end of the belt driven arm (12) is provided with a belt spring (13) capable of enabling the belt driven arm (12) to rotate, and the belt spring (13) can enable the belt driven wheel (11) to move towards the belt driving wheel (10).