CN209987369U

CN209987369U - Packaging film forming device

Info

Publication number: CN209987369U
Application number: CN201920451150.2U
Authority: CN
Inventors: 李建国
Original assignee: Beijing Da Sen Packaging Machinery Co Ltd
Current assignee: Beijing Da Sen Packaging Machinery Co Ltd
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2020-01-24
Anticipated expiration: 2029-04-03

Abstract

The utility model relates to a packaging film forming device, including upper and lower forming mechanism, it includes to go up forming mechanism: an upper chamber; the heating plate is arranged in the upper cavity and is provided with a heating assembly for heating the heating plate; the heating plate is provided with a plurality of vent holes communicated with compressed air; the lower forming mechanism comprises: the bottom of the lower chamber is provided with a waterway pipeline for water flowing; the mould is arranged in the lower cavity, and a plurality of exhaust holes communicated with the outside atmosphere are formed in the mould. The heating plate arranged in the upper cavity heats the packaging film at the bottom of the heating plate, and then compressed air is introduced into the upper cavity to press the heated packaging film at the bottom of the heating plate into a die arranged at the lower part of the heating plate; air between the packaging film and the mold is exhausted to the atmosphere through an exhaust hole on the mold, so that the packaging film is tightly attached to the mold; the bottom of cavity keeps the bottom of cavity at the uniform temperature down to the waterway pipeline that the bottom of cavity set up down, makes the packaging film temperature reduction design.

Description

Packaging film forming device

Technical Field

The utility model belongs to the technical field of packaging machinery equipment, especially indicate a packaging film forming device.

Background

The shaping mode of packaging film has vacuum forming, hot air forming, compressed air shaping and stamping forming etc. and wherein vacuum forming and hot air forming are to 300 ~ 400 um's packaging film, and compressed air shaping is to the packaging film within 300um, and the thickness is uneven after the shaping, and some corners can't be fashioned even, cause the unable use of packing carton or wrapping bag after the shaping.

SUMMERY OF THE UTILITY MODEL

In view of this, the main object of the present invention is to provide a packaging film forming device for solving the problem of the prior art that the corners of the packaging box or the packaging bag cannot be formed during the vacuum forming and hot air forming of the packaging film with a thickness of 300-400 um and the compressed air forming within 300 um.

The utility model relates to a packaging film forming device, in particular to a packaging film forming device, which comprises an upper forming mechanism and a lower forming mechanism, wherein the packaging film is conveyed between the upper forming mechanism and the lower forming mechanism, the upper forming mechanism is fixedly arranged, the lower forming mechanism can move upwards to be matched with the upper forming mechanism,

go up forming mechanism includes:

the top of the upper chamber 11 which is open downwards is communicated with an air path which can be communicated with compressed air;

the heating plate 12 is horizontally arranged at the opening of the upper chamber 11 and used for closing the upper chamber 11;

a plurality of vent holes 122 are arranged on the heating plate 12;

the lower forming mechanism comprises:

the bottom of the lower chamber 21 with the upward opening is provided with a compressed air/atmosphere interface which is communicated with atmosphere or compressed gas;

the die 22 is arranged in the lower cavity 21, a plurality of air holes 221 and air passages communicated with the air holes 221 are formed in the die 22, and outlets of the air passages are communicated with atmosphere or compressed air;

and a refrigerating device disposed at the bottom of the lower chamber 21.

Compressed air is introduced into the die from the top through a compressed air/atmosphere interface of the lower cavity, an air passage arranged at the bottom of the die and a plurality of exhaust holes, and the packaging film is jacked upwards and is attached to the bottom of the heating plate; the heating plate arranged in the upper cavity heats the packaging film at the bottom of the heating plate, and simultaneously compressed air is introduced into the upper cavity, enters the vent holes on the heating plate, is heated by the heating plate and then is discharged from the bottom of the heating plate, and the heated packaging film at the bottom of the heating plate is pressed into a die arranged at the lower part of the heating plate; the compressed air/atmosphere interface of the lower cavity is communicated with atmosphere, the compressed air is cut off, the air between the packaging film and the die is exhausted into the atmosphere through the exhaust hole, the air passage and the compressed air/atmosphere interface on the die, and the packaging film is tightly attached to the die, so that the forming quality of the packaging film is ensured; the bottom of cavity keeps the constant temperature down in the waterway pipeline that the bottom of cavity set up down, and the heat on the packaging film outwards gives off through the mould, is absorbed by the waterway pipeline of cavity bottom down, and the packaging film temperature reduces the shaping.

Preferably, the heating plate 12 comprises: the horizontal plate-shaped component and the mounting hole thereof are internally provided with a heating rod and a heat equalizing rod which are arranged in a staggered manner.

By the upper part, the soaking rod enables the heat on the heating plate to be uniformly dispersed, the packaging film at the bottom of the heating plate is uniformly heated, and the forming effect is good.

Preferably, a dispersion plate 13 is arranged at an interface of the top of the upper chamber, which faces the air path, with a certain gap from the interface.

By last, the dispersion board will let in the quick diffusion of the compressed air of cavity to whole last cavity, increases the speed that gets into the air vent on the hot plate, makes the packaging film who reaches the settlement heating temperature impress the mould fast and take shape.

Preferably, an adjusting shim plate 23 for adjusting the forming depth of the packaging film is arranged in the die.

By last, adjust the shaping degree of depth of packaging film through the adjusting shim plate with different thickness to be suitable for the shaping of the packing carton or the wrapping bag of the different degree of depth.

The utility model discloses set up compressed air and heating element at last cavity, forming die and cooling shaping subassembly set up cavity under, whole forming device compact structure, and wrapping bag or packing carton shaping after the shaping are effectual.

Drawings

FIG. 1 is a simplified schematic view of a packaging film forming apparatus;

FIG. 2 is a schematic structural view of an upper molding mechanism;

FIG. 3 is a schematic view of a heating plate;

FIG. 4 is a partial schematic view of a heating plate;

fig. 5 is a schematic structural view of the upper molding mechanism.

Detailed Description

As shown in fig. 1, the packaging film forming device comprises an upper forming mechanism 1 and a lower forming mechanism 2, wherein the upper forming mechanism 1 and the lower forming mechanism 2 are fixedly arranged, the upper forming mechanism and the lower forming mechanism can move up and down, one end of a packaging film 3 is arranged on a film pulling shaft 5, the other end of the packaging film is intermittently driven by a film clamping chain to move forward, the packaging film is formed into a packaging box or a packaging bag 4 through the upper forming mechanism and the lower forming mechanism, the packaging film 3 passes through the lower portion of the upper forming mechanism 1 in a sticking mode, when the lower forming mechanism 2 moves upwards and is matched with the upper forming mechanism 1, the lower forming mechanism and the upper forming mechanism are sealed and airtight, and.

As shown in fig. 2 to 4, a heating plate 12 is installed in an upper chamber 11 of an upper molding mechanism 1, a plurality of installation holes 121 are formed in the heating plate 12, and a plurality of heating assemblies, namely heating rods, are installed in the installation holes 121 to provide energy to the heating plate 12, so that the heating plate 12 maintains a certain temperature; the heating plate 12 and the heating rod are provided with a uniform heating rod at the lower part of the heating rod together with the mounting hole, and the heat of the heating rod is uniformly distributed on the whole heating plate 12, so that the temperature of each part of the heating plate 12 tends to be consistent; meanwhile, a thermocouple is arranged on the heating plate 12, the temperature of the heating plate 12 is monitored in real time, an electric control system provides feedback control, so that the heating plate 12 is stabilized at a preset temperature, and when the packaging film is close to the heating plate, the heating plate heats the packaging film to soften the packaging film; hundreds of circular vent holes 122 are formed in the heating plate 12, a compressed air/external air inlet 111 is formed in the upper chamber 11, a gas dispersion plate 13 is arranged on the inner side of the top of the upper chamber 11, compressed air input from the compressed air/external air inlet 111 hits the gas dispersion plate 13, the compressed air is rapidly dispersed in the whole upper chamber 11, then the compressed air enters the vent holes 122 of the heating plate 12, is rapidly heated by using heat of the heating plate 12, and then is emitted to the bottom of the heating plate 12 through the vent holes 122, when pressure is applied to the heated and softened packaging film to press the packaging film into the die 22 of the lower chamber, the temperature of the compressed air is the same as that of the packaging film, and the packaging film is prevented from being solidified in the process of pressing the packaging film into the die.

As shown in fig. 5, a mold 22 is provided at the opening of the lower cavity 21 of the lower molding mechanism 2, which is open upward, and a plurality of exhaust holes 221 and air passages 222 communicated with the respective exhaust holes 221 are provided in the mold 22; an adjusting backing plate 23 capable of adjusting the forming depth of the packaging film is arranged in the die 22; the lower chamber 21 is provided with an interface for communicating compressed air/atmosphere, and when the packaging film is pressed into the die 22, the air between the packaging film and the die 22 is exhausted to the atmosphere through the plurality of exhaust holes 221 and air passages 222 on the die 22 and the interface for communicating the atmosphere with the lower chamber 21; when compressed air is introduced into the lower chamber 21 through a compressed air/atmosphere interface on the lower chamber 21, the compressed air enters the die 22 through the air passage 222 and the exhaust holes 221 on the die, and the packaging film on the upper part of the die is lifted upwards to be attached to the bottom of the heating plate, so that the heating plate can heat the packaging film conveniently.

A water channel pipeline for water to flow is arranged at the bottom of the lower chamber 21, and the water channel pipeline enables the lower chamber 21 to keep a certain temperature; when the forming depth of the packaging film needs to be changed, the adjusting backing plate 23 with different thicknesses is placed to enable the packaging film which is softened by heating to be attached to the mold and the adjusting backing plate 23, and therefore the forming depth of the packaging film is reduced.

Wherein the step of thermoforming the packaging film comprises:

step A1, driving the lower chamber 21 to rise, and closing the mold with the upper chamber 11;

the lower chamber 21 is driven to rise and is closely attached to the upper chamber 11 through a packaging film, and the upper chamber 11 and the lower chamber 21 are sealed and airtight after the lower chamber and the upper chamber are attached, so that the packaging film divides the upper chamber 11 and the lower chamber 21 into two independent sealed spaces.

Step A2, heating the packaging film to a set temperature by a heating plate of the upper chamber;

firstly, the air path electromagnetic valve of the lower chamber 21 is switched on to compress air, the compressed air enters the air path 222 on the die 22 through the compressed air/atmosphere interface on the lower chamber 21, then enters the die 22 through the plurality of exhaust holes 221 on the die 22, and the packaging film 3 on the upper part of the die 22 is pushed to the bottom of the heating plate 12 of the upper chamber 11;

next, the heating rod on the upper chamber heating plate 12 is powered on to heat the heating plate 12, so that the packaging film attached to the bottom of the heating plate 12 is heated to a set temperature.

Step A3, pressing the packaging film softened by heating into a mould of the lower cavity for cooling and forming;

the heating rod continuously heats, the air path electromagnetic valve of the upper chamber 11 is switched to connect compressed air, the compressed air entering the upper chamber 11 hits on the air dispersion plate 13, is dispersed in the upper chamber and then enters the vent hole 122 of the heating plate, the heat in the heating plate rapidly heats the compressed air, the heated compressed air is discharged from the bottom of the heating plate, the packaging film attached to the bottom of the heating plate is pressed into the die 22, the temperature of the heated compressed air is the same as that of the packaging film, and the surface solidification of the heated compressed air and the packaging film is prevented;

meanwhile, the air path electromagnetic valve of the lower chamber 21 is switched on to the outside atmosphere, the compressed air is cut off, and in the process that the packaging film is pressed into the die 22, the air between the packaging film 3 and the die 22 is discharged into the outside atmosphere through the vent hole 221 and the air passage 222 on the die 22 and the compressed air/atmosphere interface on the lower chamber 21, so that the packaging film 3 can be tightly attached to the die 22;

the heat on the packaging film is dissipated into the lower cavity through the die, the waterway pipeline at the bottom of the lower cavity 21 absorbs the dissipated heat, the cooling water in the waterway pipeline takes away the heat, the heat on the packaging film is absorbed instantly, and the packaging film is cured and formed rapidly to be made into a packaging bag or a packaging bag with a certain shape.

The top of going up the cavity also is provided with the waterway pipeline, prevents to scald people's hand.

The temperature of the packaging film softened by heating is different, and the water channel pipeline is equivalent to a refrigerating device. It will be appreciated that other means, such as air cooling, semiconductor cooling or a combination thereof, may be used as the command means.

The device can be used for prefabricating various packaging films with the thickness of below 400 mu m into packaging bags or packaging boxes with various shapes according to requirements, and has the advantages of simple structure, high running speed, convenient maintenance and operation and convenient replacement of production specifications.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A packaging film forming device comprises an upper forming mechanism and a lower forming mechanism, packaging films are conveyed between the upper forming mechanism and the lower forming mechanism, wherein the upper forming mechanism is fixedly arranged, the lower forming mechanism can move upwards to be matched with the upper forming mechanism,

go up forming mechanism includes:

the top of the upper chamber (11) is communicated with an air passage which can be communicated with compressed air;

the heating plate (12) is horizontally arranged at the opening of the upper chamber (11);

a plurality of vent holes (122) are arranged on the heating plate (12);

the lower forming mechanism comprises:

the bottom of the lower chamber (21) with an upward opening is provided with a compressed air/atmosphere interface which is communicated with atmosphere or compressed gas;

the mould (22) is arranged in the lower cavity (21), a plurality of air holes (221) and air passages communicated with the air holes (221) are formed in the mould (22), and outlets of the air passages are communicated with atmosphere or compressed air;

a refrigerating device arranged at the bottom of the lower chamber (21).

2. The packaging film forming apparatus according to claim 1, wherein the heating plate (12) comprises: the horizontal plate-shaped component and the mounting hole thereof are internally provided with a heating rod and a heat equalizing rod which are arranged in a staggered manner.

3. The packaging film forming apparatus according to claim 1 or 2, wherein a dispersion plate (13) is provided at an interface of the top of the upper chamber facing the air passage with a certain gap from the interface.

4. The packaging film forming apparatus according to claim 1, wherein the cooling device includes a cold water line disposed below the mold (22).

5. The packaging film forming apparatus according to claim 1, wherein a setting plate (23) for setting a forming depth of the packaging film is provided in the mold.