CN220147755U - Film sealing and cutting device of bundling machine - Google Patents

Abstract

The utility model relates to a film sealing and cutting device of a binding machine. The winding assembly and the unwinding assembly are distributed up and down; the film buffer device also comprises an upper film buffer component and a lower film buffer component which are distributed up and down and are used for buffering films; the upper braking component and the lower braking component are positioned between the upper film cache component and the lower film cache component; the vertical position of the lower brake assembly is adjustable, and the lower brake assembly further comprises a brake lifting assembly for driving the lower brake assembly to longitudinally move; the film releasing assembly is arranged between the winding assembly and the upper film cache assembly; the cutting machine also comprises a sealing and cutting table structure, wherein a lower cutter assembly is arranged on the sealing and cutting table structure, and an upper pressing block is arranged above the sealing and cutting table structure; the pressing block lifting assembly is used for driving the upper pressing block to longitudinally move. The utility model can ensure that the film keeps a certain tension in the binding process, so that the film binding is more compact, the adjustability of the film pressing stroke of the upper pressing block is realized, and the binding effect is good.

Description

Film sealing and cutting device of bundling machine

Technical Field

The utility model belongs to the technical field of packaging equipment, and particularly relates to a film sealing and cutting device of a bundling machine.

Background

In the traditional industries of medicine, food and the like, in order to facilitate the use and transportation of products, products packaged by a plurality of small boxes are often required to be put into middle boxes, and then the middle boxes are shipped. However, in the production process, the above packaging mode needs to use a large number of middle boxes, wastes raw materials and has high production cost. Along with the continuous progress of technology, film bundling machines (wrapping machines) appear on the market, and the film bundling machines (wrapping machines) are used as middle packaging machines, and have the main functions of enabling plastic films to be tightly attached to the surfaces of bundled packages, ensuring that the packages are not scattered due to loose bundling in transportation and storage, and enabling the bundling to be tidy and attractive.

A conventional film strapping machine (wrapping machine) mainly includes a feeding and conveying device, a stacking device, a plurality of pushing devices, and a film sealing and cutting device. The box body stacking device is characterized in that a box body is conveyed to the box stacking device by utilizing the feeding conveying device, the box body stacked by the box stacking device is lifted and stacked, when the box body is stacked to a preset layer number, the box pushing devices are used for cooperation, the stacked box body is further pushed forward and segmented, and the segmented array box body can be bundled by matching with the film sealing and cutting device. As an important component of the film strapping machine, the film sealing and cutting device can provide packaging films for the array box body and utilize the films to carry out film pressing and heat sealing on the array box body pushed into the strapping area, so that the film sealing and cutting device plays a vital role in the working process of the film strapping machine.

However, in the working process, the existing film sealing and cutting device has certain defects: firstly, when the box body is packed, the film release needs to be intermittently suspended, but the film winding mass is large, the rotation inertia is large, and the film release is difficult to stop immediately, so that the situation of multiple film release is easy to occur, and a certain tension force of the film can not be ensured in the binding process, so that the binding is not tight, and the film binding effect is influenced; secondly, when film pressing and heat sealing are performed, the film pressing is not smooth, and the film pressing stroke is difficult to adjust, so that the film bundling effect is affected, and therefore, a film sealing and cutting device of a bundling machine needs to be designed to solve the problems.

Disclosure of Invention

The utility model provides a film sealing and cutting device of a strapping machine, which is reasonable in structural design and good in strapping effect, and aims to solve the technical problems in the prior art.

The utility model adopts the technical proposal for solving the technical problems in the prior art that: the film sealing and cutting device of the binding machine comprises a winding component used for winding operation and an unwinding component used for unwinding operation, wherein the winding component and the unwinding component are distributed up and down; the film buffer device also comprises an upper film buffer component and a lower film buffer component which are distributed up and down and are used for buffering films; the upper braking component and the lower braking component are positioned between the upper film cache component and the lower film cache component and are distributed up and down; the vertical position of the lower brake assembly is adjustable, and the lower brake assembly further comprises a brake lifting assembly for driving the lower brake assembly to longitudinally move; the film releasing assembly is arranged between the winding assembly and the upper film cache assembly; the sealing and cutting machine also comprises a sealing and cutting table structure, wherein a lower cutter assembly is arranged on the sealing and cutting table structure, an upper pressing block which is correspondingly arranged with the lower cutter assembly is arranged above the sealing and cutting table structure, and the upper pressing block and the lower cutter assembly can perform heat sealing and cutting on the film under the combined action; the pressing block lifting assembly is used for driving the upper pressing block to longitudinally move.

The utility model has the advantages and positive effects that: the utility model provides a film sealing and cutting device of a binding machine, which can provide films capable of running along the vertical direction for the binding machine by arranging a winding component and an unwinding component, and can pre-store a certain amount of films by arranging an upper film cache component and a lower film cache component, so that a box body can smoothly pull out the films in the pushing process, and further wrap a packaging box; by arranging the upper braking component and the lower braking component, after the film wraps the packaging box, the film can be braked end to end, so that the film can be in a tensioning state when wrapping the packaging box, a certain tensioning force is kept in the process of bundling the film, and the bundling of the film is more compact; by arranging the brake lifting assembly capable of driving the lower brake assembly to longitudinally move and matching with the film placing assembly, films with certain allowance can be released above and below, and tearing caused by excessive tightening when the films wrap the packaging box is avoided; by arranging the upper pressing block and the lower cutter assembly, heat sealing and cutting can be realized, tight bundling of the box body by the films is ensured, and the upper film and the lower film are still adhered together; through setting up briquetting lifting unit, but briquetting on longitudinal movement makes it remove between reset station and press mold station, has realized the adjustability of the press mold stroke of going up the briquetting, has guaranteed that go up the briquetting and can be smooth and easy carry out the press mold operation, is convenient for prepare next seal and cuts work, ties up effectually, and the operation is stable moreover easy operation.

Preferably: the film pressing device also comprises a box pressing plate assembly and a box pressing table structure which are distributed up and down and are used for pressing the film on the upper surface and the lower surface of the box; the film-free detection assembly is arranged between the winding assembly and the film releasing assembly and used for detecting whether films are lack or not.

Preferably: the upper brake assembly comprises a brake roller seat, and a film-feeding brake roller is rotationally connected to the brake roller seat; the brake block is arranged between the film-feeding brake roller and the brake roller seat, and a groove matched with the film-feeding brake roller is formed in the brake block; the device also comprises a braking power source for driving the braking block to face/depart from the film-feeding braking roller; the brake roll seat is provided with two groups of offset prevention baffle plates with adjustable intervals, and the film is arranged between the two groups of offset prevention baffle plates in a penetrating way; the structure of the lower brake assembly is identical to that of the upper brake assembly.

Preferably: the film placing component comprises a driving roller seat and a driven roller seat which are pivotally arranged, and a locking connecting piece for locking and connecting the driving roller seat and the driven roller seat is arranged between the driving roller seat and the driven roller seat; the film releasing driving roller is rotationally connected to the driving roller seat, the film releasing driven roller is rotationally connected to the driven roller seat, and the film releasing device further comprises a film releasing power source for driving the film releasing driving roller to rotate.

Preferably: the brake lifting assembly comprises a longitudinally arranged brake guide rail, a brake lifting seat is connected to the brake guide rail in a sliding manner through a sliding block, the lower brake assembly is arranged on the brake lifting seat, and the brake lifting assembly further comprises a first lifting power source for driving the brake lifting seat to move along the brake guide rail.

Preferably: the briquetting lifting assembly comprises a longitudinally arranged briquetting guide rail, a briquetting lifting seat is connected to the briquetting guide rail in a sliding manner through a sliding block, an upper briquetting is arranged on the briquetting lifting seat, and the briquetting lifting assembly further comprises a briquetting power source for driving the briquetting lifting seat to move along the briquetting guide rail.

Preferably: the lower cutter assembly comprises a cutter seat mounting plate capable of moving longitudinally, a cutter seat is arranged on the cutter seat mounting plate, and a lower cutter is arranged on the cutter seat; the cutter power source is used for driving the cutter holder mounting plate to longitudinally move.

Preferably: the sealing and cutting table structure comprises a sealing and cutting table body, a sealing and cutting notch corresponding to the lower cutter is formed in the sealing and cutting table body, and the sealing and cutting table structure further comprises a guide roller seat arranged on the sealing and cutting table body, and a transition guide roller is rotationally connected to the guide roller seat; the sealing groove opening comprises a through hole through which the lower cutter can penetrate, and limit grooves are formed in two sides of the through hole.

Preferably: the upper pressing block comprises a pressing block body, limit stops are arranged on two sides of the lower end face of the pressing block body, and the two limit stops can be respectively inserted into the two limit grooves of the sealing notch.

Preferably: the upper film buffer assembly comprises a swing arm capable of swinging around a core shaft arranged transversely, and a plurality of groups of swing film-moving rollers distributed in parallel along the length direction of the swing arm are arranged on the swing arm; the device also comprises a plurality of groups of fixed film feeding rollers which are transversely and parallelly distributed, and two groups of deviation preventing baffle plates with adjustable intervals are arranged on the peripheral wall of each fixed film feeding roller; the structure of the lower film cache assembly is consistent with that of the upper film cache assembly.

Drawings

FIG. 1 is a schematic diagram of the front view of the present utility model;

FIG. 2 is a schematic perspective view of a part of the structure of the present utility model;

FIG. 3 is a schematic perspective view of an upper brake assembly, an upper film buffer assembly and a film releasing assembly according to the present utility model;

FIG. 4 is a schematic perspective view of a membraneless detection assembly according to the present utility model;

FIG. 5 is a schematic perspective view of a brake lift assembly of the present utility model;

FIG. 6 is a schematic perspective view of a press block lifting assembly, a press box table structure and a press box plate assembly according to the present utility model;

figure 7 is a schematic perspective view of the lower cutter assembly of the present utility model.

In the figure: 1. installing a vertical plate; 2. unreeling the assembly; 3. a lower thin film cache assembly; 4. a lower brake assembly; 5. a brake lifting assembly; 5-1, a first lifting power source; 5-2, braking the lifting seat; 5-3, a second lifting power source; 5-4, braking the guide rail; 5-5, lifting the mounting frame; 5-6, a material blocking lifting seat; 6. pressing into blocks; 7. a lower cutter assembly; 7-1, a cutter power source; 7-2, a cutter guide rod; 7-3, wiring pipes; 7-4, a tool apron mounting plate; 7-5, a cutter seat; 7-6, cutting the lower cutter; 8. a sealing and cutting table structure; 8-1, sealing and cutting the table body; 8-2, sealing and cutting the notch; 8-3, a guide roller seat; 8-4, a transition guide roller; 9. a briquetting lifting assembly; 9-1, briquetting a power source; 9-2, pressing a block lifting seat; 9-3, briquetting the guide rail; 9-4, a guide rail mounting piece; 10. a box pressing table structure; 10-1, a box pressing table body; 10-2, a press box mounting frame; 11. a press plate assembly; 11-1, a pressing plate guide rail; 11-2, a box pressing power source; 11-3, pressing a box plate seat; 11-4, a box pressing plate; 12. an upper brake assembly; 12-1, braking a brake block; 12-2, an anti-deviation baffle; 12-3, a film-feeding brake roller; 12-4, a brake roller seat; 12-5, a braking power source; 12-6, a brake mounting rack; 13. a film; 14. an upper film cache assembly; 14-1, a swing arm; 14-2, swinging the film removing roller; 14-3, an anti-deviation baffle disc; 14-4, fixing a film feeding roller; 15. a membrane releasing assembly; 15-1, a driving roller seat; 15-2, a driven roller seat; 15-3, a film releasing driving roller; 15-4, a film-releasing driven roller; 15-5, film releasing power source; 16. a membraneless detection assembly; 16-1, a membraneless detection roller; 16-2, detecting a gravity block; 16-3, detecting the sensing piece; 16-4, detecting a mounting rod; 16-5, detecting a mounting frame; 16-6, detecting gaps; 17. a winding assembly; 18. coating a film roll; 19. a frame; 20. a pushing device; 21. passing through a box table; 22. a film roll is arranged; 23. and a striker plate.

Detailed Description

For a further understanding of the utility model, its features and advantages, the following examples are set forth in detail:

referring to fig. 1, the film sealing and cutting device of the strapping machine of the present utility model includes a mounting riser 1 mounted on a frame 19, a winding assembly 17 for winding operation and an unwinding assembly 2 for unwinding operation are mounted on the mounting riser 1, and the winding assembly 17 and the unwinding assembly 2 are distributed up and down.

Further, the winding assembly 17 comprises a winding shaft rotatably connected with the installation vertical plate 1, and further comprises a rotary driving mechanism connected with the installation vertical plate 1 and used for driving the winding shaft to rotate, wherein the rotary structure comprises a gear motor, a gear pair in transmission connection between an output shaft of the gear motor and the winding shaft, the gear pair adopts a bevel gear pair, namely, a driving bevel gear is connected on an output shaft of the gear motor in a key manner, and a driven bevel gear meshed with the driving bevel gear is connected on the winding shaft in a key manner. In this embodiment, the take-up shaft may be an inflatable shaft, and the unreeling assembly 2 includes an unreeling shaft connected to the mounting plate 1, and likewise, the unreeling shaft may be an inflatable shaft. In the actual working process, the lower film roll 22 is inserted on the unreeling component 2, the reeling cylinder is inserted on the reeling shaft, and the reeling cylinder on the reeling shaft is gradually reeled to form the upper film roll 18 along with the accumulation of working time.

Since the film is required to wrap the box during final bundling, a certain pre-storage amount is required for the film to be pulled, and therefore the film conveying assembly formed by the winding assembly 17 and the unwinding assembly 2 needs to have a film pre-storage area, as shown in fig. 1, in order to realize automatic film pre-storage, the embodiment further comprises an upper film buffering assembly 14 and a lower film buffering assembly 3 which are distributed up and down for buffering the film 13.

With further reference to fig. 2 and 3, in this embodiment, the upper film buffering assembly 14 includes a transversely disposed mandrel fixedly connected to the mounting vertical plate 1, a swing arm 14-1 capable of swinging around a central line of the mandrel is pivotally mounted on the mandrel, and a plurality of groups of swing film feeding rollers 14-2 distributed in parallel along a length direction of the swing arm 14-1 are mounted on the swing arm; the upper film buffer assembly 14 further comprises a plurality of groups of fixed film feeding rollers 14-4 which are arranged on the mounting vertical plate 1 and transversely distributed in parallel, two groups of offset-preventing baffle plates 14-3 with adjustable intervals are arranged on the peripheral wall of each fixed film feeding roller 14-4, and therefore the offset of the film 13 during film feeding is avoided; in this embodiment, the structure of the lower thin film cache module 3 is identical to the structure of the upper thin film cache module 14.

As shown in fig. 1, when the film winding and unwinding assembly 17 and the unwinding assembly 2 cooperate to perform normal film winding and unwinding operation, each swing arm swings downward under its own weight, and after bypassing the swing film feeding roller and the fixed film feeding roller in the lower film buffering assembly 3, the end of the film roll bypasses the swing film feeding roller and the fixed film feeding roller in the upper film buffering assembly 14, so that the films 13 are gradually pre-stored on the lower film buffering assembly 3 and the upper film buffering assembly 14, and a certain tension is maintained.

When the box pushing device 20 in the bundling machine pushes the film arranged in the array on the box passing table 21 between the lower film cache assembly 3 and the upper film cache assembly 14 in a vertical state, the forward moving packaging box pulls out the pre-stored film on the lower film cache assembly 3 and the upper film cache assembly 14 and wraps the packaging box, so that the film can be in a tensioning state when being wrapped, a certain tensioning force is kept in the bundling process, and the bundling of the film is more tight. As shown in fig. 1, the present embodiment further includes an upper brake assembly 12 and a lower brake assembly 4 for film feeding braking, and the upper brake assembly 12 and the lower brake assembly 4 are located between the upper film buffering assembly 14 and the lower film buffering assembly 3 and are distributed up and down.

With further reference to fig. 2 and 3, the upper brake assembly 12 includes a brake roller housing 12-4, and a film-feeding brake roller 12-3 is rotatably connected to the brake roller housing 12-4; the brake block 12-1 is arranged between the film-feeding brake roller 12-3 and the brake roller seat 12-4, and a groove matched with the film-feeding brake roller 12-3 is formed in the brake block 12-1. The upper brake assembly 12 further comprises a brake power source 12-5 for driving the brake block 12-1 to face/depart from the film feeding brake roller 12-3, wherein the brake power source 12-5 can adopt a linear driving piece such as a cylinder, an electric cylinder or an oil cylinder, and in the embodiment, the brake power source 12-5 adopts a cylinder with a guide rod. The upper brake assembly 12 further comprises two groups of deflection preventing baffle plates 12-2 with adjustable space arranged on the brake roller seat 12-4, namely strip-shaped holes are formed in each deflection preventing baffle plate 12-2 and are connected with the brake roller seat 12-4 through bolts penetrating through the strip-shaped holes, and in the actual working process, the film 13 penetrates between the two groups of deflection preventing baffle plates 12-2. In addition, in order to facilitate the installation of the brake power source 12-5, a brake mounting frame 12-6 is fixedly connected to the mounting vertical plate 1, and the brake power source 12-5 is installed on the brake mounting frame 12-6.

In this embodiment, the structure of the lower brake assembly 4 is identical to the structure of the upper brake assembly 12.

By arranging the lower brake assembly 4 and the upper brake assembly 12, the head-tail double brake structure of the film conveying assembly ensures that the film is in a tensioning state in the film feeding process, so that the film can maintain a certain tensioning force in the bundling process, and the bundling of the film is more compact.

When the film wraps the packaging box, the packaging film needs to be pressed on the upper surface and the lower surface of the packaging box, and then the film is subjected to heat sealing and cutting, for the operation, as shown in fig. 1, the embodiment further comprises a sealing and cutting table structure 8 connected with a frame 19, a lower cutter assembly 7 is arranged on the sealing and cutting table structure 8, an upper pressing block 6 which is arranged corresponding to the lower cutter assembly 7 is arranged above the sealing and cutting table structure 8, and the upper pressing block 6 and the lower cutter assembly 7 can be used together to perform heat sealing and cutting on the film 13; in addition, in order to conveniently adjust the film pressing stroke of the upper pressing block 6, the film pressing heat sealing operation can be smoothly performed when the film pressing heat sealing is performed, the film bundling effect is improved, and the embodiment further comprises a pressing block lifting assembly 9 for driving the upper pressing block 6 to longitudinally move.

As shown in fig. 6 and 7, in the present embodiment, the seal-cutting table structure 8 includes a seal-cutting table body 8-1 fixedly connected with a frame 19 and a mounting riser 1, a seal-cutting notch 8-2 is provided in the seal-cutting table body 8-1, the seal-cutting notch 8-2 corresponds to a lower cutter 7-6 to be mentioned later, the seal-cutting table structure 8 further includes a guide roller seat 8-3 mounted on the seal-cutting table body 8-1, and a transition guide roller 8-4 is rotatably connected to the guide roller seat 8-3. The transition guide roller 8-4 can play a role in buffering and protecting the film, so that the film is prevented from being stressed to touch sharp objects rather than being broken. In the present embodiment, the seal notch 8-2 includes a through hole through which a lower cutter 7-6, which will be mentioned later, is passed, and limit grooves are provided on both sides of the through hole.

As shown in fig. 7, in this embodiment, the upper press block 6 includes a press block body made of silica gel; limit stops are arranged on two sides of the lower end face of the pressing block body, and the pressing block body and the two limit stops jointly act to form an upward concave groove; wherein, the two limit stops can be respectively inserted into the two limit grooves of the seal notch 8-2.

Referring further to fig. 6, in this embodiment, the press block lifting assembly 9 includes a guide rail mounting member 9-4 fixedly connected to the mounting riser 1, a press block guide rail 9-3 longitudinally disposed is fixedly connected to the guide rail mounting member 9-4, a press block lifting seat 9-2 is slidably connected to the press block guide rail 9-3 through a slide block, an upper press block 6 is mounted on the press block lifting seat 9-2, and a press block power source 9-1 for driving the press block lifting seat 9-2 to move along the press block guide rail 9-3 is further included. The briquetting power source 9-1 may adopt a linear driving member such as a cylinder, an electric cylinder or an oil cylinder, in this embodiment, the briquetting power source 9-1 adopts a cylinder, wherein the cylinder barrel of the cylinder is connected with the installation vertical plate 1 through a pin shaft, a language joint is installed on the piston rod of the cylinder, and is connected with the briquetting lifting seat 9-2 through a fisheye joint and a pin shaft. The piston rod of the briquetting power source 9-1 stretches and contracts to drive the upper briquetting 6 to move longitudinally, so that the position of the upper briquetting 6 is adjusted, and the resetting or the film pressing action of the upper briquetting 6 is realized.

In the actual working process, the lower cutter assembly 7 cooperates with the upper pressing block 6 to heat-seal and cut the film, further referring to fig. 7, in this embodiment, the lower cutter assembly 7 includes a longitudinally movable cutter holder mounting plate 7-4, a cutter holder 7-5 for heat insulation is mounted on the cutter holder mounting plate 7-4, a lower cutter 7-6 is mounted on the cutter holder 7-5, a heating element for heating the lower cutter 7-6 is mounted on the lower cutter 7-6, the heating element is electrically connected with a power supply, and a cutting edge corresponding to a groove in the upper pressing block 6 is provided on the lower cutter 7-6.

The lower cutter assembly 7 further comprises a cutter power source 7-1 for driving the cutter holder mounting plate 7-4 to longitudinally move, wherein the cutter power source 7-1 can adopt linear driving parts such as an air cylinder, an electric cylinder or an oil cylinder, and in the embodiment, the cutter power source 7-1 adopts the air cylinder. In addition, in order to improve the stability of the lifting movement of the cutter holder 7-5, the lower cutter assembly 7 further comprises a longitudinally arranged cutter guide rod 7-2 mounted on the cutter holder mounting plate 7-4, the cutter guide rod 7-2 is slidably connected with the sealing and cutting table structure 8 through a linear bearing, and the lower cutter assembly further comprises a threading pipe 7-3 mounted on the cutter holder mounting plate 7-4 for threading. The transition guide roller 8-4 rolls against the bottom surface of the box during sealing and cutting, thereby contributing to a more compact packing box of film.

When the sealing and cutting films 13 are wrapped on the surfaces of the upper side and the lower side of the packaging box, the upper pressing block 6 descends, the pressing block body of the upper pressing block 6 presses the sealing and cutting films, meanwhile, the two limit blocks are pressed by the two limit blocks and then inserted into the two limit grooves of the sealing and cutting notch 8-2, the pressing block body of the upper pressing block 6 is prevented from expanding outwards, the contact pressure between the pressing block body and the sealing and cutting films is guaranteed, the upper sealing and cutting films and the lower sealing and cutting films on the upper surface and the lower surface of the packaging box are pressed and attached, then the lower cutting knife 7-6 ascends, the cutting edge of the lower cutting knife 7-6 penetrates through the through hole of the sealing and cutting notch 8-2, the upper sealing and cutting films and the lower sealing and cutting films are connected into a whole body in a hot pressing and fusing mode, the two upper sealing and lower sealing and cutting films are broken from the contact positions of the pressing block body of the upper pressing block 6 and the cutting edge of the lower cutting knife 7-6, the packaging box is completed, meanwhile, the initial sections of the sealing and cutting films of the lower sealing and cutting films are bonded together, the packaging box to be cut and the packaging box to be packaged continuously, the upper sealing and lower sealing and cutting films and the lower sealing and cutting films are pushed down by the upper sealing and lower sealing and cutting films and the packaging box are pushed by the upper sealing and lower sealing and cutting films to move down along the upper sealing and lower sealing and the upper sealing films and the lower sealing films and the packaging box 6.

In addition, in order to smoothly receive the cartridge pushed by the cartridge pushing device 20, a cartridge pressing plate assembly 11 and a cartridge pressing stage structure 10 are installed in a vertically distributed manner downstream of the seal cutting stage structure 8 for pressing the film 13 against the upper and lower surfaces of the cartridge.

As shown in fig. 6, the box pressing table structure 10 includes a box pressing mounting frame 10-2 fixedly connected with a mounting vertical plate 1 and a frame 19, and a box pressing table body 10-1 is mounted on the box pressing mounting frame 10-2 and is used for supporting a box pushing device 20 to push loose packaging boxes. The box pressing plate assembly 11 comprises a longitudinally arranged pressing plate guide rail 11-1 fixedly connected with a guide rail mounting piece 9-4, a box pressing plate seat 11-3 is connected to the pressing plate guide rail 11-1 in a sliding mode through a sliding block, and a box pressing plate 11-4 is mounted on the box pressing plate seat 11-3. The press box plate assembly 11 further comprises a press box power source 11-2 for driving the press box plate seat 11-3 to move along the press box guide rail 11-1, wherein the press box power source 11-2 can adopt a linear driving piece such as an air cylinder, an electric cylinder or an oil cylinder, and in the embodiment, the press box power source 11-2 adopts the air cylinder. Through the pressure box board subassembly 11 and the pressure box platform structure 10 that set up, can press the film 13 of parcel packing carton on the upper and lower surface of box for the packing carton can be lived by tight parcel.

In the actual working process, the brake power sources in the lower brake assembly 4 and the upper brake assembly 12 in the embodiment are in signal connection with the photoelectric eye detector, the photoelectric eye detector is used for detecting the movement of the upper pressing block 6, when the upper pressing block 6 moves to a certain extent, the photoelectric eye detector detects the upper pressing block 6, at the moment, the photoelectric eye detector transmits signals to the brake power source, the brake power source drives the brake block to press the film on the film-moving brake roller, at the moment, the film is not pulled any more, and therefore the upper pressing block 6 and the lower cutter assembly 7 jointly act to bind the film on the box in a tight state, and the firm binding effect is ensured.

In addition, in order to avoid breakage or tearing caused by excessive tightening of the film during the bundling process, the vertical position of the lower brake assembly 4 in the embodiment is adjustable, so that the purpose of releasing a certain margin of the packaging film below can be achieved; as shown in fig. 1, the embodiment further includes a brake lifting assembly 5 for driving the lower brake assembly 4 to move longitudinally, further referring to fig. 5, where the brake lifting assembly 5 includes a lifting mounting frame 5-5 mounted on the mounting riser 1, a longitudinally disposed brake rail 5-4 is fixedly connected to the lifting mounting frame 5-5, a brake lifting seat 5-2 is slidingly connected to the brake rail 5-4 through a sliding block, and the lower brake assembly 4 is mounted on the brake lifting seat 5-2. The brake lifting assembly 5 further includes a first lifting power source 5-1 for driving the brake lifting seat 5-2 to move along the brake guide rail 5-4, where the first lifting power source 5-1 may use a linear driving element such as an air cylinder, an electric cylinder or an oil cylinder, and in this embodiment, the first lifting power source 5-1 uses an air cylinder. When the lower brake assembly 4 clamps and brakes the film, the first lifting power source 5-1 drives the lower brake assembly 4 to move upwards by a preset distance, so that a certain margin of packaging film can be released below.

As shown in fig. 5, in this embodiment, the brake lifting assembly 5 further includes a material blocking lifting seat 5-6 slidably connected to the brake rail 5-4 through a slider, and further includes a second lifting power source 5-3 for driving the material blocking lifting seat 5-6 to move along the brake rail 5-4, where the second lifting power source 5-3 may use a linear driving member such as an air cylinder, an electric cylinder or an oil cylinder, and in this embodiment, the second lifting power source 5-3 uses an air cylinder. The material blocking lifting seat 5-6 is provided with a material blocking plate 23, the material blocking plate 23 is provided with a sensing piece for sensing the packaging box, the material blocking plate 23 is used for blocking the forward advancing of the packaging box, and when the box pushing device 20 pushes the packaging box forward, the material blocking plate 23 descends under the action of the second lifting power source 5-3, and then the packaging box is released.

In addition, for the purpose of releasing a certain margin of packaging film above, as shown in fig. 1, the present embodiment further includes a film releasing assembly 15 disposed between the winding assembly 17 and the upper film buffering assembly 14. With further reference to fig. 3, the film releasing assembly 15 includes a driving roller seat 15-1 and a driven roller seat 15-2 which are pivotally installed, and a locking connector for locking and connecting the driving roller seat 15-1 and the driven roller seat 15-2 is installed between the driving roller seat 15-1 and the driven roller seat 15-2, wherein the locking connector can adopt a magnetic attraction lock catch; the driving roller seat 15-1 is rotatably connected with a film releasing driving roller 15-3, and the driven roller seat 15-2 is rotatably connected with a film releasing driven roller 15-4. The film releasing assembly 15 further comprises a film releasing power source 15-5 for driving the film releasing driving roller 15-3 to rotate, and in this embodiment, the film releasing power source 15-5 comprises a gear motor fixedly connected with the mounting vertical plate 1, and a bevel gear pair is mounted between an output shaft of the gear motor and the film driving roller 15-3.

The film releasing driving roller 15-3 in the film releasing assembly 15 rotates reversely to release a certain margin of packaging film above; therefore, through the cooperation of the film placing component 15, the lower braking component 4 and the braking lifting component 5, when the film is in an excessively tight state, the surplus film can be properly released, and the film is prevented from being torn due to excessive tightening when the packaging box is bundled.

In order to monitor the condition of the film provided by the unreeling component 2 and the reeling component 17, as shown in fig. 1, the present embodiment further comprises a film-free detecting component 16 for detecting whether the film is deficient, which is arranged before the reeling component 17 and the unreeling component 15.

As shown in fig. 4, the membraneless detection assembly 16 comprises a detection mounting rod 16-4 mounted on the mounting vertical plate 1, two membraneless detection rollers 16-1 are rotatably connected to the detection mounting rod 16-4, and opposite end surfaces of the two membraneless detection rollers 16-1 are in clearance fit to form a detection gap 16-6; the device further comprises a detection mounting frame 16-5 mounted on the mounting vertical plate 1, a detection gravity block 16-2 mounted on the detection mounting frame 16-5 and a detection sensing piece 16-3 mounted on the detection mounting frame 16-5. When one end of the gravity detection block 16-2 falls into the detection gap 16-6 under the action of gravity, the other end triggers the detection sensing piece 16-3 to prompt a worker to perform reel change operation, and in the actual working process, the worker is prompted to perform reel change operation by arranging a warning lamp or a buzzer.

The working process comprises the following steps:

in a specific sealing and cutting process, films connected together are firstly arranged between an unreeling component 2 and a reeling component 17, when a box pushing device 20 in the strapping machine pushes a film which is arranged in an array and is in a vertical state between a lower film cache component 3 and an upper film cache component 14 through a box pushing device 21, the forward-moving packaging box pulls out the film prestored on the lower film cache component 3 and the upper film cache component 14 and wraps the packaging box, meanwhile, an upper pressing block 6 moves downwards under the driving of a pressing block lifting component 9, and when the upper pressing block 6 moves downwards to a preset position, a braking power source in a lower braking component 4 and an upper braking component 12 is started to brake a film (the specific principle is as described above, and the specific principle is not repeated) so that the film can be in a tensioning state when wrapping the packaging box; meanwhile, the box body is pushed onto the box pressing table structure 10, the box pressing plate assembly 11 is started, and films wrapping the packaging box are pressed on the upper surface and the lower surface of the packaging box;

when the sealing and cutting films 13 are wrapped on the surfaces of the upper side and the lower side of the packaging box, the upper pressing block 6 descends, so that the pressing block body of the upper pressing block 6 presses the sealing and cutting films, meanwhile, the two limit stops of the upper pressing block 6 press the sealing and cutting films and then are inserted into the two limit grooves of the sealing and cutting notch 8-2, then the lower cutting knife 7-6 ascends, so that the cutting edge of the lower cutting knife 7-6 penetrates through the through hole of the sealing and cutting notch 8-2, the upper sealing and cutting films and the lower sealing and cutting films are pressed between the two limit grooves (limit stops) of the sealing and cutting notch 8-2, and the upper sealing and cutting films and the lower sealing and cutting films are connected into a whole in a hot pressing mode through hot pressing and fusion mode, so that the two upper sealing and cutting films are disconnected from the contact positions of the pressing block body of the upper pressing block 6 and the cutting edge of the lower cutting knife 7-6, packaging box wrapping is completed, the initial sections of the sealing and cutting films at the next time are bonded together, and then the upper pressing block 6 and the lower cutting knife 7-6 are reset; under the pushing of the box pushing device 20, the next group of packaging boxes to be sealed and cut is pushed to the lower cutter assembly 7, so that one end of each packaging box is pressed against the sealing and cutting film 13, then the packaging boxes and the sealing and cutting film 13 move together, pass through the sealing and cutting table body 8-1, and when the sealing and cutting films are wrapped on the surfaces of the upper side and the lower side of the packaging boxes, the upper pressing block 6 descends to seal and cut again, so that continuous effect is realized.

Claims (10)

1. A film sealing and cutting device of a binding machine is characterized in that: the winding device comprises a winding component (17) for winding operation and an unwinding component (2) for unwinding operation, wherein the winding component (17) and the unwinding component (2) are distributed up and down; the film forming machine also comprises an upper film caching assembly (14) and a lower film caching assembly (3) which are distributed up and down and are used for caching films (13); the film feeding device further comprises an upper braking component (12) and a lower braking component (4) which are used for film feeding braking, wherein the upper braking component (12) and the lower braking component (4) are positioned between the upper film buffering component (14) and the lower film buffering component (3) and distributed up and down; the vertical position of the lower brake assembly (4) is adjustable, and the lower brake assembly further comprises a brake lifting assembly (5) for driving the lower brake assembly (4) to longitudinally move; the film releasing assembly (15) is arranged between the winding assembly (17) and the upper film cache assembly (14); the sealing and cutting machine further comprises a sealing and cutting table structure (8), wherein a lower cutter assembly (7) is arranged on the sealing and cutting table structure (8), an upper pressing block (6) which is arranged corresponding to the lower cutter assembly (7) is arranged above the sealing and cutting table structure (8), and the film (13) can be subjected to heat sealing and cutting under the combined action of the upper pressing block (6) and the lower cutter assembly (7); the device also comprises a pressing block lifting assembly (9) for driving the upper pressing block (6) to longitudinally move.

2. The film sealing and cutting device of the strapping machine as set forth in claim 1 wherein: the device also comprises a box pressing plate assembly (11) and a box pressing table structure (10) which are distributed up and down and are used for pressing the film (13) on the upper surface and the lower surface of the box; the film-free detection assembly (16) is arranged between the winding assembly (17) and the film releasing assembly (15) and used for detecting whether films are lack.

3. The film sealing and cutting device of the strapping machine as set forth in claim 1 wherein: the upper brake assembly (12) comprises a brake roller seat (12-4), and a film-moving brake roller (12-3) is rotatably connected to the brake roller seat (12-4); the automatic film feeding device further comprises a brake block (12-1) arranged between the film feeding brake roller (12-3) and the brake roller seat (12-4), wherein a groove matched with the film feeding brake roller (12-3) is formed in the brake block (12-1); the device also comprises a braking power source (12-5) for driving the braking block (12-1) to face/depart from the film-moving braking roller (12-3); the device also comprises two groups of deviation prevention baffle plates (12-2) with adjustable interval, which are arranged on the brake roller seat (12-4), and a film (13) is arranged between the two groups of deviation prevention baffle plates (12-2) in a penetrating way; the structure of the lower brake assembly (4) is identical to that of the upper brake assembly (12).

4. The film sealing and cutting device of the strapping machine as set forth in claim 1 wherein: the film placing component (15) comprises a driving roller seat (15-1) and a driven roller seat (15-2) which are pivotally arranged, and a locking connecting piece for locking and connecting the driving roller seat (15-1) and the driven roller seat (15-2) is arranged between the driving roller seat and the driven roller seat; the film releasing driving roller (15-3) is rotationally connected to the driving roller seat (15-1), the film releasing driven roller (15-4) is rotationally connected to the driven roller seat (15-2), and the film releasing device further comprises a film releasing power source (15-5) for driving the film releasing driving roller (15-3) to rotate.

5. The film sealing and cutting device of the strapping machine as set forth in claim 1 wherein: the brake lifting assembly (5) comprises a brake guide rail (5-4) which is longitudinally arranged, a brake lifting seat (5-2) is connected to the brake guide rail (5-4) in a sliding mode through a sliding block, the lower brake assembly (4) is mounted on the brake lifting seat (5-2), and the brake lifting assembly further comprises a first lifting power source (5-1) which is used for driving the brake lifting seat (5-2) to move along the brake guide rail (5-4).

6. The film sealing and cutting device of the strapping machine as set forth in claim 1 wherein: the briquetting lifting assembly (9) comprises a briquetting guide rail (9-3) which is longitudinally arranged, a briquetting lifting seat (9-2) is connected to the briquetting guide rail (9-3) in a sliding mode through a sliding block, an upper briquetting (6) is arranged on the briquetting lifting seat (9-2), and the briquetting lifting assembly further comprises a briquetting power source (9-1) which is used for driving the briquetting lifting seat (9-2) to move along the briquetting guide rail (9-3).

7. The film sealing and cutting device of the strapping machine as set forth in claim 1 wherein: the lower cutter assembly (7) comprises a cutter seat mounting plate (7-4) capable of moving longitudinally, a cutter seat (7-5) is arranged on the cutter seat mounting plate (7-4), and a lower cutter (7-6) is arranged on the cutter seat (7-5); the cutter power source (7-1) is used for driving the cutter holder mounting plate (7-4) to longitudinally move.

8. The film sealing and cutting device of the strapping machine as in claim 7 wherein: the sealing and cutting table structure (8) comprises a sealing and cutting table body (8-1), a sealing and cutting notch (8-2) corresponding to the lower cutter (7-6) is formed in the sealing and cutting table body (8-1), the sealing and cutting table structure also comprises a guide roller seat (8-3) arranged on the sealing and cutting table body (8-1), and a transition guide roller (8-4) is rotationally connected to the guide roller seat (8-3); the sealing notch (8-2) comprises a through hole through which the lower cutter (7-6) can penetrate, and limit grooves are formed in two sides of the through hole.

9. The film sealing and cutting device of the strapping machine as set forth in claim 8 wherein: the upper pressing block (6) comprises a pressing block body, limit stops are arranged on two sides of the lower end face of the pressing block body, and the two limit stops can be respectively inserted into the two limit grooves of the sealing groove opening (8-2).

10. The film sealing and cutting device of the strapping machine as set forth in claim 1 wherein: the upper film buffer assembly (14) comprises a swinging arm (14-1) capable of swinging around a transversely arranged mandrel, and a plurality of groups of swinging film-moving rollers (14-2) which are distributed in parallel along the length direction of the swinging arm (14-1) are arranged on the swinging arm; the device also comprises a plurality of groups of fixed film feeding rollers (14-4) which are transversely and parallelly distributed, and two groups of deviation preventing baffle plates (14-3) with adjustable intervals are arranged on the peripheral wall of each fixed film feeding roller (14-4); the structure of the lower film cache component (3) is consistent with that of the upper film cache component (14).