CN215481947U

CN215481947U - PBS double-layer co-extrusion composite discharging device

Info

Publication number: CN215481947U
Application number: CN202121511574.7U
Authority: CN
Inventors: 钱东生; 钱宸茜
Original assignee: Jiangyin Runxuan Paper Industry Co ltd
Current assignee: Jiangyin Runxuan Paper Industry Co ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2022-01-11
Anticipated expiration: 2031-07-05

Abstract

The utility model discloses a PBS double-layer co-extrusion composite discharging device which comprises a hollow shell, wherein two extrusion units are arranged on the shell side by side, and each extrusion unit comprises a feeding hole, a pressurizing cavity, a pressurized cavity and a discharging hole which are sequentially communicated; the pressure cavities and the discharge ports of the two extrusion units are in a long and narrow shape with two flush ends, and the pressurizing cavities of the two extrusion units are internally provided with pressurizing components; the shell is also provided with a driving assembly, and the driving assembly is connected with the pressurizing assemblies of the two extrusion units. This PBS double-deck crowded compound discharging device altogether extrudes through two discharge gates and forms bond line and PBS membrane, is favorable to simplifying PBS and drenches membrane paper apparatus for producing structure, reduces equipment occupation space to only need single cold jar can reduce the temperature to drenching membrane paper, reduce the consumption, reduced manufacturing cost.

Description

PBS double-layer co-extrusion composite discharging device

Technical Field

The utility model relates to the technical field of PBS (Poly Butylene succinate) coated paper production, in particular to a PBS double-layer co-extrusion composite discharging device.

Background

The PBS coated paper not only has good toughness and heat resistance (can be repeatedly used), but also can be automatically decomposed, and the burden on the environment and natural resources is reduced, so that the PBS coated paper is widely applied to the life and work of people.

In PBS drenches the production process of membrane paper, in order to strengthen the adhesive strength between paper substrate and the PBS membrane, improve product quality, adopt two extrusion mechanism usually, drench the membrane bond line in advance on paper substrate before drenching membrane PBS promptly, if adopt the china utility model patent that publication number is CN207267340U disclose one kind two drench crowded equipment altogether, along paper substrate's feed direction, adhesive and PBS are extruded respectively to two extrusion device, thereby on the basis of strengthening PBS and paper substrate adhesive strength, improved and drenched membrane efficiency, the waste of production material has been reduced.

However, in the double-spray co-extrusion device, the two extrusion devices independently operate, so that the equipment is large in size, complex in structure and large in occupied space, and in order to avoid scrapping of paper due to adhesion of the paper due to overhigh temperature after film spraying, a cooling cylinder is required for cooling after the film spraying treatment, and the double-spray co-extrusion device needs two cooling cylinders, so that the production cost and the power consumption of the production device are increased; in addition, in the above device, the discharge speed of the two extrusion devices needs to be controlled to be consistent, otherwise, material waste is easily caused, and the production quality of the laminated paper is reduced.

Therefore, a PBS double-layer co-extrusion composite discharging device is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide the PBS double-layer co-extrusion composite discharging device which has the advantages of simplified structure, reduced occupied space, reduced cost and power consumption, consistent discharging speed, improved film coating quality and reduced material waste.

In order to realize the technical effects, the technical scheme of the utility model is as follows: the PBS double-layer co-extrusion composite discharging device comprises a hollow shell, wherein two extrusion units are arranged on the shell side by side, and each extrusion unit comprises a feeding hole, a pressurizing cavity, a pressurized cavity and a discharging hole which are sequentially communicated; the pressure cavities and the discharge ports of the two extrusion units are in a long and narrow shape with two flush ends, and the pressurizing cavities of the two extrusion units are internally provided with pressurizing components; the shell is further provided with a driving assembly, and the driving assembly is connected with the pressurizing assemblies of the two extrusion units.

Preferably, in order to ensure the transmission pressure in the pressurizing cavity, the pressurizing assembly comprises a driving gear and a driven gear which are meshed with each other, and the top circles of the driving gear and the driven gear are respectively attached to the cavity walls at the two ends of the pressurizing cavity; the drive assembly includes a rotary motor coupled to the drive gear.

Preferably, in order to reduce the number of driving assemblies and the equipment cost, the driving gear or the driven gear of one of the two extrusion units is coaxially connected with the driving gear of the other extrusion unit.

Preferably, in order to detect the material conveying pressure, at least one extrusion unit is provided with a pressure sensor, and the pressure sensor is arranged between a pressurization cavity and a pressure cavity of the extrusion unit.

Preferably, in order to maintain the equipment conveniently and reduce the replacement cost, the shell comprises a pressurizing shell and an extrusion die head which are detachably connected, the feed inlet and the pressurizing cavity are both arranged on the pressurizing shell, and the pressurized cavity and the discharge outlet are both arranged on the extrusion die head.

Preferably, in order to adjust the distance between the two discharge ports, so as to control the film spraying position distance of the adhesive and the PBS, enhance the adhesive strength of the film spraying paper and improve the product quality, a connecting pipe is arranged between the pressurizing shell and the extrusion die head, and the connecting pipe is a carbon steel bent pipe.

Preferably, in order to filter impurities in the material and ensure the product quality, the feed inlet is provided with a filter piece.

Preferably, the filter element is detachably connected to the housing in order to facilitate operations such as replacement and maintenance of the filter element.

Preferably, in order to adjust the width of the formed film, at least one end of the discharge port is provided with an adjusting piece in sealing fit with the discharge port, and the shell is provided with a translation device for driving the adjusting piece to move along the length direction of the discharge port.

Preferably, in order to ensure that the materials on two sides of the forming film are uniformly distributed, the two ends of the discharge port are provided with adjusting pieces.

In conclusion, the PBS double-layer co-extrusion composite discharging device disclosed by the utility model extrudes the adhesive layer and the PBS film through the two discharging ports which are arranged side by side and are close to each other, so that the structure of the PBS laminated paper production device is favorably simplified, the occupied space of equipment is reduced, only a single cold cylinder is needed for cooling the laminated paper, the power consumption is reduced, and the production cost of the laminated paper is reduced.

Drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a schematic view of another embodiment 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a sectional view taken along line A-A of FIG. 1;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 6 is a schematic structural view of embodiment 2;

FIG. 7 is an exploded schematic view of FIG. 6;

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

FIG. 9 is a schematic structural view of embodiment 3;

in the figure: 1. the device comprises a shell, a pressurizing shell, an extrusion die head, a connecting pipe, a partition plate, a extruding unit, a feeding hole, a pressurizing cavity, a pressure cavity, a discharging hole, a pressurizing assembly, a driving gear, a driven gear, a driving assembly, a pressure sensor, a filtering piece, a regulating piece, a translation device, a translation motor, a screw rod, a sleeve, a connecting plate and a concentric shaft, wherein the pressurizing shell is 1a, the extruding die head is 1b, the connecting pipe is 1c, the partition plate is 1d, the extruding unit is 2a, the feeding hole is 2b, the pressurizing cavity is 2c, the discharging hole is 2d, the pressurizing assembly is 3, the driving gear is 3a, the driven gear is 3b, the driving assembly is 4, the pressure sensor is 5, the filtering piece is 6, the regulating piece is 7, the translation device is 8, the translation motor is 8a translation motor, the screw rod is 8c, the sleeve is 8d, the connecting plate is 8d, and the concentric shaft is 9.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Example 1

As shown in fig. 1-5, the PBS double-layer co-extrusion composite discharging device of embodiment 1 includes a hollow casing 1, two extrusion units 2 distributed side by side are disposed on the casing 1, and the two extrusion units are respectively an adhesive extrusion unit and a PBS extrusion unit sequentially disposed along a feeding direction of a paper base layer; the two extrusion units 2 respectively comprise a feeding port 2a, a pressurizing cavity 2b, a pressurized cavity 2c and a discharging port 2d which are sequentially communicated from top to bottom, the pressurized cavity 2c and the discharging port 2d are both in long and narrow shapes extending along the horizontal direction, and two end parts of the two are flush; a pressurizing assembly 3 is arranged in the pressurizing cavity 2b, a driving assembly 4 connected with the pressurizing assembly 3 is arranged on the shell 1, and the discharge ports 2d of the two extrusion units 2 are distributed side by side.

In the PBS double-layer co-extrusion composite discharging device, the feeding holes 2a of the two extrusion units 2 are respectively used for connecting a feeding device for providing an adhesive and a feeding device for providing a PBS material, high-temperature materials enter the pressurizing cavity 2b through the feeding holes 2a, the driving assembly 4 operates to drive the pressurizing assembly 3 to increase the transmission pressure of the materials, and the problem that the transmission pressure of the edge film materials lags, so that the edge film materials flowing out of the discharging holes 2d are not uniformly distributed to influence the quality of a formed film is avoided; in this way, the adhesive and the PBS are made to flow downward in the two extrusion units 2, respectively, enter the pressure chamber 2c, and are finally discharged from the two discharge ports 2d, respectively, to form the uniformly distributed adhesive layer and the PBS film.

After the adhesive layer and the PBS are extruded into a film, the adhesive layer and the PBS are extruded with the paper base layer through a composite roll pair to obtain PBS laminating paper; PBS that makes from this drenches membrane paper is because the setting of bond line, the adhesive strength of PBS membrane has been increased, thereby product quality is improved, and PBS drenches in the membrane paper apparatus for producing, only need set up a pair of compound pair roller in this discharging device's below and can make the product, and realize the cooling through single cooling roller, not only be favorable to reducing PBS and drench membrane paper apparatus for producing's size, and simplify the structure, make its compact structure, reduce occupation space, in addition, only need set up single cold roll cooling, manufacturing cost has been reduced and the energy consumption has been reduced.

As shown in fig. 4 and 5, in order to ensure the transmission pressure in the extrusion unit 2 and the quality of the formed film of the material, the pressurizing assembly 3 includes a driving gear 3a and a driven gear 3b which are engaged with each other, and the addendum circle of the driving gear 3a and the addendum circle of the driven gear 3b are respectively attached to the cavity walls at both ends of the pressurizing cavity 2 b; the drive assembly 4 comprises a rotary motor connected to one of the drive gears 3a. Through the rotation of rotating electrical machines drive driving gear 3a, drive rather than the driven gear 3b rotation of meshing, extrude the material, increase transmission pressure prevents in the material transportation process, because the lagging reason of pressure, leads to discharge gate 2d exhaust shaping membrane material to distribute inconsistent to influence the product quality of shaping membrane and drenching membrane paper.

As shown in fig. 4 and 5, the driving gears 3a of the two supercharging assemblies 3 are coaxially and fixedly connected, the driven gears 3b are fixedly connected through a concentric shaft 9, and the driving assembly includes a motor fixed on the housing 1, and an output shaft of the motor is fixedly connected with one of the driving gears 3a in the two supercharging chambers 2b. After the design is adopted, the synchronous operation of the supercharging components 3 in the two supercharging cavities 2b can be driven only by a single driving component 4, the number of the driving components 4 is reduced, the installation is convenient, and the equipment cost is reduced.

As shown in fig. 3-5, the feeding port 2a is provided with a filtering member 6, the filtering member 6 is a filtering net, and the filtering net can filter particle impurities in the edge film material, so that the pure material flows in the extrusion unit 2, thereby ensuring the film forming quality at the discharging port 2d. The inlet pipe is installed to feed inlet 2a, and the inlet pipe includes from the top and connects gradually the thick pipe that sets up, transition pipe and tubule, filters 6 grafting and sets up in the junction of thick pipe and transition pipe, has realized filtering 6 and has been connected with dismantling of casing 1, makes things convenient for equipment to use the back for a long time, takes out from feed inlet 2a and filters 6, washs, changes or other maintenance operations. Of course, as an alternative to a similar effect, the filter element 6 and the housing 1 can also be detachably connected, for example by a snap fit.

As shown in fig. 4, the housing 1 includes a pressurizing shell 1a and an extrusion die head 1b which are detachably connected, two extrusion die heads 1b are provided, the feed inlet 2a and the pressurizing cavity 2b are both provided on the pressurizing shell 1a, the pressurized cavity 2c and the discharge outlet 2d are both provided on the extrusion die head 1b, a connecting pipe 1c is provided between the pressurizing shell 1a and the extrusion die head 1b for communicating the pressurizing cavity 2b and the pressurized cavity 2c, and two ends of the connecting pipe 1c are respectively in plug-in fit with the pressurizing shell 1a and the extrusion die head 1 b; the pressurizing casing 1a includes two detachably connected half shells, and a partition plate 1d is provided between the two half shells to partition an inner cavity of the pressurizing casing 1a into two pressurizing chambers 2b.

By adopting the structure mode, the shell 1 is divided into a plurality of parts, namely the pressurizing shell 1a, the extrusion die head 1b, the connecting pipe 1c and the partition plate 1d, when one of the parts is damaged, the damaged part can be detached for replacement, and therefore the maintenance cost of the equipment is reduced. Of course, other detachable connection modes can be adopted among the pressurizing shell 1a, the extrusion die head 1b and the connecting pipe 1c to achieve the technical effects.

Example 2

As shown in fig. 6-8, the PBS double-layer co-extrusion composite discharging device of embodiment 2 is based on embodiment 1, and is different in that a pressure sensor 5 is disposed in one of the extrusion units 2, and the pressure sensor 5 is disposed between the pressurizing cavity 2b and the pressure receiving cavity 2 c; two ends of the discharge port 2d are provided with adjusting pieces 7 in sealing fit with the discharge port, the adjusting pieces 7 are connected with translation devices 8, and the translation devices 8 drive the adjusting pieces 7 to move along the length direction of the discharge port 2d. The translation device 8 comprises a translation motor 8a fixed between the two extrusion die heads 1b, the output end of the translation motor 8a is coaxially and fixedly connected with a screw rod 8b, the screw rod 8b is in threaded fit with a sleeve 8c, a connecting plate 8d is fixed below the sleeve 8c, and two ends of the connecting plate 8d are respectively fixedly connected with the two adjusting pieces 7.

In this embodiment, can detect the material transmission pressure in extrusion die 1b pressurized cavity 2c through pressure sensor 3 in the extrusion unit 2, according to the rotational speed of rotating electrical machines in the pressure regulation control drive assembly 4 to guarantee in the material transmission control to extrude unit 2 in the transmission pressure that keeps stable, strengthen the stability of membrane flow, improve the quality of shaping membrane.

The translation motor 8a starts, drives the lead screw 8b to rotate, drives the sleeve 8c to move, drives the adjusting parts 7 in the two extrusion die heads 1b to move through the connecting plate 8d, and therefore the width and the position of the bonding layer and the PBS forming film discharged from the discharge port 1-3 can be adjusted according to the width and the position of paper. Still seal with pressurized cavity 2c on the regulating part 7 and cooperate, guarantee that pressurized cavity 2c and discharge gate 2d are isometric to reduced the material quantity in pressurized cavity 2c, reduced manufacturing cost, and guarantee that material evenly distributed is back in pressurized cavity 2c, from the flat even outflow of discharge gate 2d, improve the shaping membrane quality, thereby improve the product quality who drenches membrane paper. As an alternative to the similar effect, the translation device 8 may also employ other driving means such as an air cylinder.

Example 3

As shown in fig. 9, the PBS double-layer co-extrusion composite discharging device of embodiment 3 is based on embodiment 1, and is different in that the connecting pipe 1c is a carbon steel bent pipe.

Because connecting pipe 1c is the carbon steel return bend, can bend into different shapes to keep certain rigidity, so, conveniently adjust the distance between two extrusion die head 1b, and then drench the membrane position distance of drenching of two discharge gates 2d department PBS and adhesive in the membrane production process according to actual production situation control, thereby strengthen the bonding firmness of PBS membrane, promote product quality.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a PBS double-deck crowded compound discharging device altogether, includes hollow casing (1), its characterized in that:

the extrusion device is characterized in that two extrusion units (2) are arranged on the shell (1) side by side, and each of the two extrusion units (2) comprises a feeding hole (2 a), a pressurizing cavity (2 b), a pressurized cavity (2 c) and a discharging hole (2 d) which are communicated in sequence;

the pressure receiving cavities (2 c) and the discharge openings (2 d) of the two extrusion units (2) are in a long and narrow shape with two flush ends, and the pressurizing cavities (2 b) of the two extrusion units (2) are internally provided with pressurizing components (3);

the extrusion device is characterized in that a driving assembly (4) is further arranged on the shell (1), and the driving assembly (4) is connected with the two pressurizing assemblies (3) of the extrusion units (2).

2. The PBS double-layer co-extrusion composite discharging device of claim 1, which is characterized in that: the supercharging assembly (3) comprises a driving gear (3 a) and a driven gear (3 b) which are meshed with each other, and addendum circles of the driving gear (3 a) and the driven gear (3 b) are respectively attached to cavity walls at two ends of the supercharging cavity (2 b); the drive assembly (4) comprises a rotary motor connected with the driving gear (3 a).

3. The PBS double-layer co-extrusion composite discharging device of claim 2, wherein: the drive gear (3 a) or the driven gear (3 b) of one of the two extrusion units (2) is coaxially connected to the drive gear (3 a) of the other.

4. The PBS double-layer co-extrusion composite discharging device of claim 1, which is characterized in that: at least one extrusion unit (2) is provided with a pressure sensor (5), the pressure sensor (5) being arranged between a pressurizing cavity (2 b) and a pressurized cavity (2 c) of the extrusion unit (2).

5. The PBS double-layer co-extrusion composite discharging device of claim 1, which is characterized in that: the shell (1) comprises a pressurizing shell (1 a) and an extrusion die head (1 b) which are detachably connected, the feeding hole (2 a) and the pressurizing cavity (2 b) are arranged on the pressurizing shell (1 a), and the pressurized cavity (2 c) and the discharging hole (2 d) are arranged on the extrusion die head (1 b).

6. The PBS double-layer co-extrusion composite discharging device of claim 5, wherein: and a connecting pipe (1 c) is arranged between the pressurizing shell (1 a) and the extrusion die head (1 b), and the connecting pipe (1 c) is a carbon steel bent pipe.

7. The PBS double-layer co-extrusion composite discharging device of claim 1, which is characterized in that: the feed inlet (2 a) is provided with a filter element (6).

8. The PBS double-layer co-extrusion composite discharging device of claim 7, wherein: the filtering piece (6) is detachably connected with the shell (1).

9. The PBS double-layer co-extrusion composite discharging device of claim 1, which is characterized in that: at least one end of the discharge port (2 d) is provided with an adjusting piece (7) in sealing fit with the discharge port, and the shell (1) is provided with a translation device (8) for driving the adjusting piece (7) to move along the length direction of the discharge port (2 d).

10. The PBS double-layer co-extrusion composite discharging device of claim 9, wherein: both ends of the discharge hole (2 d) are provided with adjusting pieces (7).