CN110901085A

CN110901085A - Packaging bag solvent-free composite system

Info

Publication number: CN110901085A
Application number: CN201911184545.1A
Authority: CN
Inventors: 张宏彦; 蔡成映
Original assignee: Chongqing Rich Packing Printing Co Ltd
Current assignee: Chongqing Rich Packing Printing Co Ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-03-24
Anticipated expiration: 2039-11-27
Also published as: CN110901085B

Abstract

The invention belongs to the technical field of printed product processing, and particularly relates to a solvent-free packaging bag composite system which comprises a coating unit, two unreeling units, a pressing unit and a reeling unit; the coating unit comprises a power mechanism, a glue solution pool and a communicating pipe, a pipeline is connected between the glue solution pool and the communicating pipe, and a one-way liquid inlet valve is arranged on the pipeline; flow baffles are arranged at two ends of the communicating pipe, and a one-way liquid discharge valve is arranged on each flow baffle; coating rollers positioned on one side of the spoiler are rotatably connected in two ends of the communicating pipe, and the two coating rollers are used for coating the films unreeled by different unreeling units respectively; a plunger with one side penetrating through the glue solution pool is connected in the communicating pipe in a sliding manner, and a reset piece is connected between the plunger and the communicating pipe; a stirring mechanism driven by a power mechanism to rotate is arranged in the glue solution pool, and the plunger is driven to slide in a reciprocating manner in the rotating process of the stirring mechanism. In the scheme, the functions of stirring the glue solution, automatically supplementing the glue solution of the coating roller and the like are realized, and the cost can be saved while the structure of the device is simplified.

Description

Packaging bag solvent-free composite system

Technical Field

The invention belongs to the technical field of printed product processing, and particularly relates to a solvent-free packaging bag compounding system.

Background

The plastic packaging bag is prepared by using films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins and performing the working procedures of printing, compounding, curing, heat sealing, bag making and the like, wherein the compounding belongs to a processing step of film post-printing processing, and materials with comprehensive properties of all single materials can be obtained through compounding.

At present, the film is compounded mainly by gluing and compounding by means of glue solution, a solvent is added into the existing glue solution, the solvent has very strong pungent smell, the physical health of operators can be affected, and the solvent can volatilize and can cause bad influence on the environment. In order to sufficiently volatilize the solvent, a drying unit is required to be arranged for drying, and the whole process of film compounding is long.

Compounding the film by using the existing compound system, wherein the gluing structure of the compound system is as follows: the liquid storage tank sets up in the glue spreader top, and the opening below the liquid storage tank utilizes the action of gravity to shift the glue solution to the glue spreader, and motor drive glue spreader constantly rotates for the glue solution can distribute on each surface of glue spreader, scribbles the glue solution on the film with on the glue spreader at last. The use of the above-described device has the following drawbacks: the glue solution in the liquid storage tank is easy to precipitate to cause layering, and the quality of the glue solution transferred to the glue spreader cannot be guaranteed; secondly, the glue solution in the liquid storage tank needs to be supplemented frequently, which is very troublesome.

Disclosure of Invention

The invention aims to provide a solvent-free composite system for a packaging bag, which aims to solve the problems that glue solution is easy to precipitate and delaminate, the quality of the glue solution is reduced, and the glue solution needs to be continuously supplemented.

In order to achieve the purpose, the scheme of the invention is as follows: the solvent-free packaging bag compounding system comprises a coating unit, two symmetrically arranged unreeling units, a pressing unit for adhering different films together and a rolling unit for rolling the compounded films; the coating unit comprises a power mechanism, a glue solution pool and a communicating pipe, a pipeline is connected between the glue solution pool and the communicating pipe, and a one-way liquid inlet valve is arranged on the pipeline; flow baffles for plugging the circulation pipe are arranged at the two ends of the communicating pipe, and a one-way liquid discharge valve is arranged on each flow baffle; coating rollers positioned on one side of the spoiler are rotatably connected in two ends of the communicating pipe, and the two coating rollers are used for coating the films unreeled by different unreeling units respectively; a plunger with one side penetrating through the glue solution pool is connected in the communicating pipe in a sliding manner, and a reset piece is connected between the plunger and the communicating pipe; a stirring mechanism driven by a power mechanism to rotate is arranged in the glue solution pool, and the plunger is driven to slide in a reciprocating manner in the rotating process of the stirring mechanism.

The working principle and the beneficial effects of the scheme are as follows: when the film is compounded, the unreeling unit, the pressing unit and the reeling unit start to work, and the power mechanism is started at the same time. The power unit drives the stirring mechanism to work, and the stirring mechanism stirs the glue solution in the glue solution tank, so that the glue solution can be effectively prevented from precipitating and layering, and the quality of the glue solution is influenced. In the rotating process of the stirring mechanism, the stirring mechanism can be in contact with the plunger, and the plunger can slide in a reciprocating mode along the communicating pipe under the combined action of the stirring mechanism and the reset piece. When the plunger moves to one side far away from the communicating pipe, the pressure in the communicating pipe is reduced, the one-way liquid inlet valve is automatically opened, and the glue solution in the glue solution tank enters the communicating pipe through the pipeline to supplement the glue solution for the communicating pipe; when the plunger presses the glue solution in the communicating pipe, the pressure in the communicating pipe is increased, the one-way liquid discharge valve is automatically opened, the glue solution in the communicating pipe is discharged through the one-way liquid discharge valve, and the discharged glue solution is adhered to the coating roller. When the power mechanism works, the two unwinding units simultaneously and respectively pay out the films, the films respectively move to one sides of the coating unit, the pressing unit and the winding unit, the glue solution on the film coating roller is coated on the films in the moving process of the films, the different films coated with the glue solution are bonded into a whole under the action of the pressing unit, and finally the films are wound by the winding unit.

In the scheme, the film is compounded by using the solvent-free glue solution, and a drying unit is not required to be arranged independently, so that the process of compounding the film can be reduced. In this scheme, power unit drive rabbling mechanism work for the glue solution in the rabbling mechanism can the stirring glue solution pond, effectively avoids the glue solution to take place to deposit and influences the glue solution quality. Meanwhile, the effect of the stirring mechanism is fully utilized through the ingenious structural design, so that the stirring mechanism can play a role in stirring glue solution and also can serve as a power source for driving the plunger to reciprocate, the glue solution in the communicating pipe can be continuously coated on the film coating roller and can be continuously supplemented under the effect of the stirring mechanism, manual supplement of the glue solution is not needed, and manual film coating is not needed. In the scheme, only one power mechanism is arranged, so that the functions of stirring the glue solution, automatically supplementing the glue solution of the coating roller and the like are realized, the structure of the device is simplified, and the device cost and the labor cost are saved.

Optionally, the stirring mechanism includes a rotating shaft, and a plurality of arc-shaped stirring blades capable of contacting with the end of the plunger are arranged on the rotating shaft. The rabbling mechanism during operation drives arc stirring vane and takes place to rotate, because arc stirring vane wholly is the arc, can make arc stirring vane's arcwall face and plunger contact through control arc stirring vane's rotation direction for the plunger can take place to slide under arc stirring vane's effect.

Optionally, the power mechanism includes a motor and a speed reducer both located above the glue solution pool, an output shaft of the motor is connected with an input shaft of the speed reducer, and an output shaft of the speed reducer is connected with the rotating shaft. The speed reducer is arranged, so that the output speed of the motor can be effectively controlled, and the rotating speed of the rotating shaft is prevented from being too high.

Optionally, the spoiler, the coating roller and the communicating pipe enclose a storage chamber capable of temporarily storing the glue solution. The storage cavity is arranged, and glue liquid discharged from the one-way liquid discharge valve can be temporarily stored in the storage cavity, so that the glue liquid is prevented from dripping.

Optionally, a ball is rotatably connected to one end of the plunger extending into the glue solution pool. The setting of ball can effectively reduce the wearing and tearing between plunger and the arc stirring vane, extension plunger and arc stirring vane's life.

Optionally, a glue absorbing layer for absorbing glue is adhered to the surface of the coating roller. The glue solution can be effectively adsorbed by the arrangement of the glue absorption layer, so that the glue solution can be better coated on the film by the film coating roller

Optionally, a scraper for scraping off the excessive glue solution on the surface of the film coating roller is arranged in the end part of the communicating pipe. The scraper can remove excessive glue solution on the surface of the coating roller, so that excessive glue solution coated on the film is avoided.

Optionally, the film coating roller is rotatably connected in the communicating pipe through a connecting shaft, and one end of the connecting shaft extends out of the communicating pipe; and conveying chains are respectively connected between the rotating shaft and different connecting shafts. The power output by the rotating shaft can be transmitted to the connecting shaft through the conveying chain, so that the film coating roller on the connecting shaft rotates, the rotation of the film coating roller is beneficial to enabling the glue solution discharged from the one-way liquid discharge valve to be uniformly coated on each surface of the film coating roller, and the glue solution can be coated on the film by the film coating roller.

Optionally, the unwinding unit comprises an unwinding roller and a regulating roller for keeping the film tensioned; the pressing unit comprises two pressing rollers which are oppositely arranged; the film coating roller is positioned between the unwinding roller and the adjusting roller.

Optionally, the winding unit includes two tensioning rollers and a winding roller for winding the composite film, and the two tensioning rollers are respectively located on two sides of the film.

Drawings

FIG. 1 is a top cross-sectional view of a solventless compounding system for packaging in one embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a front view of the power mechanism and the stirring mechanism of the solventless compound system for packaging in one embodiment of the present invention;

fig. 4 is a power transmission diagram between the power mechanism and the connecting shaft of the solventless hybrid system packaged in the second embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises an unwinding roller 10, a regulating roller 11, a pressing roller 20, a winding roller 30, a tensioning roller 31, a film 40, a glue solution pool 50, a rotating shaft 51, an arc-shaped stirring blade 52, a communicating pipe 70, a spoiler 71, a one-way liquid discharge valve 711, a coating roller 72, a glue absorbing layer 721, a connecting shaft 722, a one-way liquid inlet valve 73, a scraper 74, a storage cavity 75, a plunger 80, a ball 81, a resetting piece 82, a motor 90, a speed reducer 91 and a conveying chain 92.

Example one

This embodiment is substantially as shown in fig. 1: the solvent-free packaging bag compound system comprises a coating unit, a pressing unit, a winding unit and two symmetrically arranged unwinding units. This scheme also can add the drying unit according to actual need, utilizes the drying unit to dry film 40 after preliminary compound, makes the glue solution condense fast. The specific structure of the drying unit can be selected from conventional techniques, such as selecting an electric heating wire to dry the film 40, which will not be described in detail herein. The unreeling unit comprises an unreeling roller 10 and a regulating roller 11, a film 40 to be compounded is reeled in the unreeling roller 10, and when the film 40 needs to be compounded, the unreeling roller 10 unreels the film 40. The pressing unit comprises two pressing rollers 20 which are oppositely arranged, and the two films 40 coated with the films can be pressed into a whole by the two pressing rollers 20. The winding unit comprises a power motor, a winding roller 30 and two tensioning rollers 31, the two tensioning rollers 31 are located between the pressing roller 20 and the winding roller 30, and the two tensioning rollers 31 are located on two sides of the film 40 respectively. An output shaft of the power motor is connected with the winding roller 30, the power motor is started, the winding roller 30 rotates, and the compounded film 40 is wound. In order to avoid the overlarge rotating speed of the power motor, a speed reducing device can be additionally arranged to control the rotating speed of the wind-up roll 30.

The coating unit comprises a power mechanism, a communicating pipe 70 and a glue solution pool 50 storing glue solution, a pipeline is connected between the glue solution pool 50 and the communicating pipe 70, a one-way liquid inlet valve 73 is arranged on the pipeline, when the pressure in the communicating pipe 70 is reduced, the one-way liquid inlet valve 73 can be automatically opened, and the glue solution in the glue solution pool 50 enters the communicating pipe 70 through the pipeline. Flow blocking plates 71 for blocking the ends of the flow pipe are fixedly arranged in the two ends of the communication pipe 70, one-way liquid discharge valves 711 are arranged on the flow blocking plates 71, when the pressure in the communication pipe 70 is increased, the one-way liquid discharge valves 711 can be automatically opened, and the glue liquid in the communication pipe 70 is discharged through the one-way liquid discharge valves 711. As shown in fig. 2, the coating roller 72 is rotatably connected to both ends of the communication pipe 70 via the connection shaft 722, the coating roller 72 is located on the right side of the baffle 71, the coating roller 72 and the communication pipe 70 can define a storage chamber 75, and the glue solution discharged from the one-way drain valve 711 can be temporarily stored in the storage chamber 75. The surface of the coating roller 72 is adhered with a glue absorbing layer 721, the glue absorbing layer 721 is mainly used for absorbing glue solution, and the glue absorbing layer 721 is a sponge layer in this embodiment. A scraper 74 is welded in the end of the communicating pipe 70, and the scraper 74 is mainly used for scraping the excessive glue solution on the surface of the coating roller 72. The coating roller 72 is located between the unwinding roller 10 and the adjusting roller 11, and the two coating rollers 72 respectively coat the films 40 unwound by different unwinding units. The communicating pipe 70 is internally slidably and hermetically connected with a plunger 80, the right side of the plunger 80 penetrates through the glue solution pool 50 and is positioned in the glue solution pool 50, the plunger 80 can also slide along the side wall of the glue solution pool 50, a sealing gasket capable of contacting with the side wall of the glue solution pool 50 is arranged on the plunger 80, and the sealing gasket is arranged to effectively prevent glue solution leakage. The right end of the plunger 80 is rotatably connected with a ball 81 in the following specific connection mode: the right side of the plunger 80 is provided with a groove, the cross section of the groove is arc-shaped, the arc is a major arc, and the ball 81 is positioned in the groove and can freely rotate along the groove. A reset member 82 is connected between the plunger 80 and the communication pipe 70, in this embodiment, the reset member 82 is a spring, one end of the spring is fixed at the left side end of the plunger 80, and the other end of the spring is fixed in the inner wall of the communication pipe 70.

Be equipped with rabbling mechanism in the glue solution pond 50, rabbling mechanism has a plurality of arc stirring vane 52 including the pivot 51 that is located glue solution pond 50, and the welding has on the pivot 51, and arc stirring vane 52 can contact with plunger 80 and promote plunger 80 and slide rotating the in-process. As shown in fig. 3, the power mechanism includes a motor 90 and a speed reducer 91 both located above the glue solution pool 50, and the motor 90 and the speed reducer 91 are fixedly mounted on the frame; an output shaft of the motor 90 is connected to an input shaft of the speed reducer 91, and an output shaft of the speed reducer 91 is connected to the rotating shaft 51.

When the film 40 is compounded, the unwinding unit, the pressing unit and the winding unit start to operate, and the motor 90 and the speed reducer 91 are started at the same time. Under the effect of motor 90 and speed reducer 91, pivot 51 and the arc stirring vane 52 on the pivot 51 take place to rotate towards anticlockwise, and the glue solution in glue solution pond 50 is stirred to arc stirring vane 52, can effectively avoid the glue solution to take place to deposit, influences the quality of glue solution. During the rotation of the arc-shaped stirring blades 52, the arc-shaped stirring blades 52 can contact the plunger 80, and the plunger 80 can slide back and forth along the communication pipe 70 under the combined action of the arc-shaped stirring blades 52 and the spring. When the plunger 80 moves away from one side of the communicating pipe 70, the pressure in the communicating pipe 70 is reduced, the one-way liquid inlet valve 73 is automatically opened, and the glue solution in the glue solution pool 50 enters the communicating pipe 70 through a pipeline to supplement the glue solution for the communicating pipe 70; when the plunger 80 presses the glue solution in the communication pipe 70, the pressure in the communication pipe 70 increases, the one-way liquid discharge valve 711 automatically opens, the glue solution in the communication pipe 70 is discharged through the one-way liquid discharge valve 711, and the discharged glue solution adheres to the coating roller 72. When the power mechanism works, the two unwinding units simultaneously and respectively pay out the film 40, the film 40 respectively moves to one side of the coating unit, the pressing unit and the winding unit, in the moving process of the film 40, the glue solution on the film coating roller 72 is coated on the film 40, different films 40 coated with the glue solution are bonded into a whole under the action of the pressing unit, and finally the films are wound by the winding unit.

Example two

The present embodiment is different from the first embodiment in that, as shown in fig. 4, the rotating shaft 51 of the stirring mechanism is in a transmission relationship with the connecting shaft 722. In this embodiment, the coating roller 72 is rotatably connected in the communicating pipe 70 through the connecting shaft 722, the upper end of the connecting shaft 722 extends out of the communicating pipe 70, the conveying chains 92 are respectively connected between the rotating shaft 51 and the different connecting shafts 722, and the conveying chains are arranged to transmit the power of the rotating shaft 51 to the connecting shaft 722, so that the connecting shaft 722 can rotate. In order to ensure that the conveying chain 92 can effectively transmit power, chain wheels can be welded on the rotating shaft 51 and the connecting shaft 722, and then the conveying chain 92 is sleeved on the chain wheels on the rotating shaft 51 and the connecting shaft 722.

The power output by the rotating shaft 51 can be transmitted to the connecting shaft 722 through the conveying chain 92, so that the coating roller 72 on the connecting shaft 722 rotates, and the rotation of the coating roller 72 is beneficial to enabling the glue solution discharged from the one-way liquid discharge valve 711 to be uniformly coated on each surface of the coating roller 72 and simultaneously beneficial to the coating roller 72 to coat the glue solution on the film 40.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.

Claims

1. The solvent-free composite system for the packaging bag is characterized in that: the device comprises a coating unit, two symmetrically arranged unreeling units, a pressing unit for adhering different films together and a reeling unit for reeling the compounded films; the coating unit comprises a power mechanism, a glue solution pool and a communicating pipe, a pipeline is connected between the glue solution pool and the communicating pipe, and a one-way liquid inlet valve is arranged on the pipeline; flow baffles for plugging the circulation pipe are arranged at the two ends of the communicating pipe, and a one-way liquid discharge valve is arranged on each flow baffle; coating rollers positioned on one side of the spoiler are rotatably connected in two ends of the communicating pipe, and the two coating rollers are used for coating the films unreeled by different unreeling units respectively; a plunger with one side penetrating through the glue solution pool is connected in the communicating pipe in a sliding manner, and a reset piece is connected between the plunger and the communicating pipe; a stirring mechanism driven by a power mechanism to rotate is arranged in the glue solution pool, and the plunger is driven to slide in a reciprocating manner in the rotating process of the stirring mechanism.

2. The packaging bag solventless compounding system of claim 1, wherein: the stirring mechanism comprises a rotating shaft, and a plurality of arc-shaped stirring blades capable of contacting with the end part of the plunger piston are arranged on the rotating shaft.

3. The packaging bag solventless compounding system of claim 2, wherein: the power mechanism comprises a motor and a speed reducer which are both positioned above the glue solution pool, an output shaft of the motor is connected with an input shaft of the speed reducer, and an output shaft of the speed reducer is connected with the rotating shaft.

4. The packaging bag solventless compounding system of claim 3, wherein: the spoiler, the coating roller and the communicating pipe form a storage cavity capable of temporarily storing glue solution.

5. The packaging bag solventless compounding system of claim 4, wherein: the plunger piston is connected with a ball in a rotating way on one end extending into the glue solution pool.

6. The packaging bag solventless compounding system of claim 5, wherein: and the surface of the film coating roller is adhered with a glue absorbing layer for absorbing glue solution.

7. The packaging bag solventless compounding system of claim 6, wherein: a scraper for scraping the excessive glue solution on the surface of the film coating roller is arranged in the end part of the communicating pipe.

8. The packaging bag solventless compounding system of any one of claims 2-7, wherein: the coating roller is rotatably connected in the communicating pipe through a connecting shaft, and one end of the connecting shaft extends out of the communicating pipe; and conveying chains are respectively connected between the rotating shaft and different connecting shafts.

9. The packaging bag solventless compounding system of any one of claims 1-7, wherein: the unwinding unit comprises an unwinding roller and a regulating roller for keeping the thin film tensioned; the pressing unit comprises two pressing rollers which are oppositely arranged; the film coating roller is positioned between the unwinding roller and the adjusting roller.

10. The packaging bag solventless compounding system of claim 9, wherein: the winding unit comprises two tensioning rollers and a winding roller used for winding the composite film, and the two tensioning rollers are respectively positioned on two sides of the film.