Blow molding device for preparing high-strength PE film

Abstract

The invention provides a blow molding device for preparing a high-strength PE film, and relates to the technical field of PE film preparation, the blow molding device comprises a machine barrel, an extrusion molding conveying unit is installed in the machine barrel, the extrusion molding conveying unit comprises a driving motor, and a sealing bearing is fixedly embedded in the left side face of the machine barrel. Through the arrangement of the feeding hopper, the metering feeder, the discharge valve, the observation frame and the graduated scale, the storage amount of PE raw materials can be monitored, the falling PE materials can be accurately metered, the amount of the PE raw materials entering the extruder can be accurately controlled, the stability and uniformity of the extrusion process are ensured, and the production efficiency is improved. Through the arrangement of the machine barrel, the extrusion molding conveying unit, the barrier disc, the filter holes, the heating block and the PLC editing controller, the conveyed PE material can be heated and melted, through the barrier disc and the filter holes, the unmelted PE material can be blocked and filtered, the melted material passes through the filter holes, the existence of unmelted particles is effectively reduced, and high-quality blow molding production of the PE film is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of PE film preparation, and specifically to a blow molding device for preparing high-strength PE films. Background Art

[0002] In recent years, the film industry has developed rapidly. Plastic films have become one of the materials with the fastest growing demand in the industry. As one of the most important packaging materials nowadays, PE films play a huge role both in product outer packaging and inner packaging. The outer packaging serves as safety protection and covering, while the inner packaging can be used as a carrier to cover the entire surface layer. Different industries have different main uses. It can be said that PE films are one of the flexible, lightweight, and widely applicable materials in various industries.

[0003] Among them, the invention patent with the publication number CN215320451U discloses a blow molding device for preparing high-strength and compression-resistant PE films. However, there are still certain drawbacks when the above patent is used. During feeding, the feeding amount of PE raw materials cannot be accurately controlled, and incomplete melting occurs when the PE raw materials are transported and melted. Solid particles and melted PE materials are mixed together for extrusion and blowing, which easily affects the blowing quality of PE films. Therefore, we provide a blow molding device for preparing high-strength PE films to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a blow molding device for preparing high-strength PE films, so as to solve the problems raised in the background art and overcome the existing technical defects.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: A blow molding device for preparing high-strength PE films, including a barrel, an extrusion and conveying unit is installed inside the barrel. The extrusion and conveying unit includes a driving motor. A sealing bearing is fixedly embedded on the left side surface of the barrel. A conveying screw is arranged inside the barrel. The left end of the conveying screw penetrates through the sealing bearing and is connected to the output end of the driving motor. A barrier disk is connected to the outer surface of the conveying screw. A group of annularly arranged filter holes are opened on the left side surface of the barrier disk. Annularly arranged heating blocks are connected to the outer surface of the barrel. A feeding hopper is fixedly communicated with the upper surface of the barrel. A metering feeder is installed on the inner wall of the feeding hopper. A discharge valve is fixedly communicated with the left side surface of the feeding hopper. An extrusion die head is fixedly communicated with the right end of the barrel. A PE film inflation head is communicated with the right end of the extrusion die head. A high-pressure air supply pump is connected to the bottom surface of the PE film inflation head. The output end of the high-pressure air supply pump is fixedly communicated with the input end of the PE film inflation head.

[0006] A blow molding device for preparing high-strength PE films and its molding method, including

[0007] Step S1: First, install and fix the barrel and this blow molding device through the mounting plate, mounting holes and support brackets, and then power on this device.

[0008] Step S2: Load the PE raw material into the interior of the hopper, and understand the storage quantity of the PE raw material through the observation window and scale.

[0009] Step S3: Open the discharge valve so that the PE raw material falls into the interior of the barrel through the metering feeder for quantitative feeding.

[0010] Step S4: Click the PLC editing controller to control the operation of the extrusion and conveying unit to convey the PE raw material. On the one hand, control the heating block to work to heat and melt the PE material. On the other hand, use the barrier disk and filter holes to block the unmelted PE material. The melted PE material can be separated from solid particles and molten materials through the filter holes, realizing extrusion blow molding processing.

[0011] As a further solution of the present invention: A PLC editing controller is connected to the front of the barrel, and the PLC editing controller is electrically connected to the drive motor, heating block, metering feeder and high-pressure air supply pump through wires.

[0012] As a further solution of the present invention: An observation window is fixedly inlaid on the front of the hopper, and a scale is provided on the front of the observation window.

[0013] As a further solution of the present invention: A temperature monitoring sensor is fixedly inlaid on the upper surface of the barrel, and the temperature monitoring sensor is electrically connected to the PLC editing controller through a wire.

[0014] As a further solution of the present invention: A heat preservation shell is connected to the outer surface of the barrel, and the heat preservation shell is made of high-temperature resistant material.

[0015] As a further solution of the present invention: An arc-shaped support plate is connected to the left side of the high-pressure air supply pump, and the top end of the arc-shaped support plate is fixedly connected to the bottom surface of the barrel.

[0016] As a further solution of the present invention: A group of stirring rods are connected to the upper surface of the conveying screw, and a stirring ball is connected to the top end of each stirring rod.

[0017] As a further solution of the present invention: Two support brackets are connected to the bottom surface of the barrel, two mounting plates are connected to the outer surface of each support bracket, and mounting holes are provided on the upper surface of each mounting plate.

[0018] As a further solution of the present invention: it further includes an optical monitoring module. The optical monitoring unit includes an IPC unit fixedly installed on the inner wall of the insulation shell. The IPC unit includes a point cloud conversion subunit, a point cloud analysis subunit, a point cloud judgment subunit, and a result output unit. The point cloud conversion subunit converts the pixels in the blow molding photos taken by the IPC unit into point clouds. The point cloud analysis subunit analyzes the position information and chromaticity information contained in the point clouds. The point cloud judgment unit judges the attitude frame information of the blow molding material contained in the position information and the true color information contained in the chromaticity information. The result output unit outputs the qualified / unqualified results of the blow molding material analyzed and judged by the optical detection unit.

[0019] Compared with the prior art, the beneficial effects of the present invention include: through the provided feeding hopper, metering feeder, discharge valve, observation frame, and scale, the storage quantity of PE raw materials can be monitored, and the falling PE materials can be accurately metered, so as to accurately control the amount of PE raw materials entering the extruder, ensure the stability and uniformity of the extrusion process, and through the provided barrel, extrusion and conveying unit group, barrier disc, filter holes, heating block, and PLC editing controller, the conveyed PE materials can be heated and melted, and through the barrier disc and filter holes, the unmelted PE materials can be blocked and filtered, enabling the melted materials to pass through the filter holes, effectively reducing the presence of unmelted particles, and facilitating the high-quality blow molding production of PE films. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The disclosure of the present invention will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the protection scope of the present invention. In the drawings, the same reference numerals are used to refer to the same components. Among them:

[0021] Figure 1 Schematically shows an overall three-dimensional structural diagram of a blow molding device for preparing high-strength PE films according to an embodiment of the present invention;

[0022] Figure 2 Schematically shows a top view of a barrel according to an embodiment of the present invention;

[0023] Figure 3 Schematically shows a top cross-sectional view of a barrel according to an embodiment of the present invention;

[0024] Figure 4 Schematically shows an internal dissection structural diagram of a feeding hopper according to an embodiment of the present invention;

[0025] Reference numerals in the figure: 1, barrel; 2, extrusion and conveying unit; 21, drive motor; 22, sealing bearing; 23, conveying screw; 24, barrier disk; 25, filter holes; 3, hopper; 31, discharge valve; 32, metering feeder; 4, observation window; 5, scale; 6, insulation shell; 7, temperature monitoring sensor; 8, extrusion die head; 9, PE film inflation head; 10, high-pressure air supply pump; 11, arc-shaped support plate; 12, support frame; 13, mounting plate; 131, mounting hole; 14, PLC editing controller; 15, heating block; 16, stirring rod; 17, stirring ball. Detailed implementation mode

[0026] It is easy to understand that according to the technical solution of the present invention, without changing the essence of the present invention, those of ordinary skill in the art can propose various interchangeable structural forms and implementation methods. Therefore, the following detailed implementation modes and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction on the technical solution of the present invention.

[0027] According to an embodiment of the present invention in combination with the attached Figures 1 to 4 shown.

[0028] A blow molding device for preparing high-strength PE film, including a barrel 1, an extrusion and conveying unit 2 is installed inside the barrel 1, the extrusion and conveying unit 2 includes a drive motor 21, a sealing bearing 22 is fixedly embedded on the left side surface of the barrel 1, a conveying screw 23 is arranged inside the barrel 1, the left end of the conveying screw 23 penetrates through the sealing bearing 22 and is connected to the output end of the drive motor 21, a barrier disk 24 is connected to the outer surface of the conveying screw 23, a group of annularly arranged filter holes 25 are opened on the left side surface of the barrier disk 24, a group of annularly arranged heating blocks 15 are connected to the outer surface of the barrel 1, a hopper 3 is fixedly communicated with the upper surface of the barrel 1, a metering feeder 32 is installed on the inner wall of the hopper 3, a discharge valve 31 is fixedly communicated with the left side surface of the hopper 3, an extrusion die head 8 is fixedly communicated with the right end of the barrel 1, a PE film inflation head 9 is communicated with the right end of the extrusion die head 8, a high-pressure air supply pump 10 is connected to the bottom surface of the PE film inflation head 9, and the output end of the high-pressure air supply pump 10 is fixedly communicated with the input end of the PE film inflation head 9.

[0029] A blow molding device for preparing high-strength PE film and its molding method, including

[0030] Step S1: First, install and fix the barrel 1 and this blow molding device through the mounting plate 13, mounting holes 131 and the support frame 12, and then power on this device;

[0031] Step S2: Load the PE raw material into the inside of the hopper 3, and understand the storage amount of the PE raw material through the observation window 4 and the scale 5;

[0032] Step S3: Open the discharging valve 31 to allow the PE raw material to fall into the interior of the barrel 1 through the metering feeder 32 for quantitative feeding;

[0033] Step S4: After clicking the PLC editing controller 14 to control the operation of the extrusion and conveying unit 2 to convey the PE raw material, on the one hand, control the heating block 15 to work to heat and melt the PE material, and on the other hand, use the barrier disk 24 and the filter holes 25 to block the unmelted PE material. The melted PE material can pass through the filter holes 25 to separate solid particles and molten materials, realizing extrusion blow molding processing.

[0034] In this embodiment, the PLC editing controller 14 is connected to the front surface of the barrel 1. The PLC editing controller 14 is electrically connected to the drive motor 21, the heating block 15, the metering feeder 32, and the high-pressure air supply pump 10 through wires, which can conveniently control this blow molding device and facilitate the blow molding operation of the PE film. The front surface of the hopper 3 is fixedly inlaid with an observation frame 4, and a scale 5 is opened on the front surface of the observation frame 4, which can facilitate understanding the storage and feeding of the PE raw material. The temperature monitoring sensor 7 is fixedly inlaid on the upper surface of the barrel 1, and the temperature monitoring sensor 7 is electrically connected to the PLC editing controller 14 through a wire, which can monitor the temperature inside the barrel 1 and facilitate understanding the melting condition of the PE material.

[0035] In this embodiment, the outer surface of the barrel 1 is connected with a heat insulation shell 6. The heat insulation shell 6 is made of high-temperature resistant material, which can protect the outside of the barrel 1 and avoid scalding accidents. The left side surface of the high-pressure air supply pump 10 is connected with an arc-shaped support plate 11, and the top end of the arc-shaped support plate 11 is fixedly connected to the bottom surface of the barrel 1, which can increase the stability of the high-pressure air supply pump 10 and facilitate the stable air supply of this air supply system. A group of stirring rods 16 are connected to the upper surface of the conveying screw 23, and a stirring ball 17 is connected to the top end of each stirring rod 16, which can stir and mix the PE material inside the barrel 1 and facilitate the effective melting of the PE material. Two support frames 12 are connected to the bottom surface of the barrel 1, and two mounting plates 13 are connected to the outer surface of each support frame 12. Mounting holes 131 are opened on the upper surface of each mounting plate 13, which can install and fix the barrel 1 and facilitate the stable use of this blow molding device.

[0036] In this embodiment, an optical monitoring module is further included. The optical monitoring unit includes an IPC unit fixedly installed on the inner wall of the heat preservation shell 6. The IPC unit includes a point cloud conversion subunit, a point cloud analysis subunit, a point cloud judgment subunit, and a result output unit. The point cloud conversion subunit converts the pixels in the blow molding photos captured by the IPC unit into a point cloud. The point cloud analysis subunit analyzes the position information and chromaticity information contained in the point cloud. The point cloud judgment unit judges the attitude frame information about the blow molding material contained in the position information and the true color information contained in the chromaticity information. The result output unit outputs the qualified / unqualified result of the blow molding material analyzed and judged by the optical detection unit. Therefore, the optical monitoring module can be used to judge whether the blow molded profile is qualified in appearance or color, achieving the purpose of self-inspection, saving production costs, and enhancing the production profit and market competitiveness.

[0037] Working principle: During use, first, the barrel 1 and this blow molding device are installed and fixed through the mounting plate 13, mounting holes 131, and support frame 12. Then, the device is powered on, and the PE raw material is loaded into the upper hopper 3. The storage quantity of the PE raw material is understood through the observation window 4 and the scale 5. Then, the discharge valve 31 is opened to enable the PE raw material to fall into the barrel 1 through the metering feeder 32, realizing quantitative feeding. Next, the PLC editing controller 14 is clicked to control the operation of the extrusion and conveying unit 2 to convey the PE raw material, and at the same time, the heating block 15 is controlled to work to heat and melt the PE material. Meanwhile, the barrier disk 24 and the filter holes 25 are used to block the unmelted PE material. The melted PE material passes through the filter holes 25, realizing the separation of solid particles and molten materials. Then, the extrusion blow molding process is carried out to achieve high-efficiency and high-quality blow molding of the PE film.

[0038] The technical scope of the present invention is not limited to the content described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A blow molding device for preparing a high-strength PE film, characterized in that, It includes a barrel (1), inside which an extrusion conveying unit (2) is installed. The extrusion conveying unit (2) includes a driving motor (21). A sealing bearing (22) is fixedly embedded in the left side surface of the barrel (1). A conveying screw (23) is arranged inside the barrel (1). The left end of the conveying screw (23) penetrates through the sealing bearing (22) and is connected to the output end of the driving motor (21). A barrier disk (24) is connected to the outer surface of the conveying screw (23). A group of annularly arranged filter holes (25) are formed on the left side surface of the barrier disk (24). Annularly arranged heating blocks (15) are connected to the outer surface of the barrel (1). A feeding hopper (3) is fixedly communicated with the upper surface of the barrel (1). A metering feeder (32) is installed on the inner wall of the feeding hopper (3). A discharge valve (31) is fixedly communicated with the left side surface of the feeding hopper (3). An extrusion die head (8) is fixedly communicated with the right end of the barrel (1). A PE film blowing head (9) is communicated with the right end of the extrusion die head (8). A high-pressure air supply pump (10) is connected to the bottom surface of the PE film blowing head (9). The output end of the high-pressure air supply pump (10) is fixedly communicated with the input end of the PE film blowing head (9).

2. The blow molding device for preparing a high-strength PE film according to claim 1, wherein A PLC editing controller (14) is connected to the front surface of the barrel (1). The PLC editing controller (14) is electrically connected to the driving motor (21), the heating blocks (15), the metering feeder (32), and the high-pressure air supply pump (10) through wires.

3. The blow molding device for preparing a high-strength PE film according to claim 2, characterized in that, An observation frame (4) is fixedly embedded in the front surface of the feeding hopper (3). A scale (5) is formed on the front surface of the observation frame (4).

4. The blow molding device for preparing a high-strength PE film according to claim 3, characterized in that, A temperature monitoring sensor (7) is fixedly embedded in the upper surface of the barrel (1). The temperature monitoring sensor (7) is electrically connected to the PLC editing controller (14) through a wire.

5. The blow molding device for preparing a high-strength PE film according to claim 4, characterized in that, A heat preservation shell (6) is connected to the outer surface of the barrel (1). The heat preservation shell (6) is made of high-temperature resistant material.

6. The blow molding device for preparing a high-strength PE film according to claim 5, characterized in that, An arc-shaped support plate (11) is connected to the left side surface of the high-pressure air supply pump (10). The top end of the arc-shaped support plate (11) is fixedly connected to the bottom surface of the barrel (1).

7. The blow molding device for preparing a high-strength PE film according to claim 6, characterized in that, A group of stirring rods (16) are connected to the upper surface of the conveying screw (23). A stirring ball (17) is connected to the top end of each stirring rod (16).

8. A blow molding device for preparing a high-strength PE film according to claim 7, characterized in that, Two support brackets (12) are connected to the bottom surface of the barrel (1). Two mounting plates (13) are connected to the outer surface of each support bracket (12). Mounting holes (131) are formed on the upper surface of each mounting plate (13).

9. The blow molding device for preparing a high-strength PE film according to claim 8, characterized in that, It further includes an optical monitoring module. The optical monitoring unit includes an IPC unit fixedly installed on the inner wall of the heat preservation shell (6). The IPC unit includes a point cloud conversion subunit, a point cloud analysis subunit, a point cloud judgment subunit, and a result output unit. The point cloud conversion subunit converts the pixels in the blow molding photos captured by the IPC unit into point clouds. The point cloud analysis subunit analyzes the position information and chromaticity information contained in the point clouds. The point cloud judgment unit judges the attitude frame information about the blow molding material contained in the position information and the true color information contained in the chromaticity information. The result output unit outputs the qualified / unqualified results of the blow molding material analyzed and judged by the optical detection unit.

10. The blow molding device and molding method for preparing a high-strength PE film according to claim 9, characterized in that, including Step S1: First, install and fix the barrel (1) and this blow molding device through the mounting plate (13), mounting holes (131), and support frame (12), and then power on this device. Step S2: Load the PE raw material into the interior of the hopper (3), and understand the storage amount of the PE raw material through the observation window (4) and scale (5). Step S3: Open the discharge valve (31) to enable the PE raw material to fall into the interior of the barrel (1) through the metering feeder (32) for quantitative feeding. Step S4: After clicking the PLC editing controller (14) to control the operation of the extrusion and conveying unit (2) to convey the PE raw material, on the one hand, control the heating block (15) to work to heat and melt the PE material, and on the other hand, use the barrier disk (24) and filter holes (25) to block the unmelted PE material. After melting, the PE material can be separated into solid particles and molten materials through the filter holes (25) to achieve extrusion blow molding processing.

Images