A resin coating packaging film production line and its production process

Abstract

The present invention relates to the technical field of resin packaging films, and discloses a resin coating packaging film production line and its production process, which solves the technical problem that the current film cutting structure needs to pause the production line during the cutting process, resulting in a decrease in production efficiency. The invention comprises a melting stirring device, a filtering device, an extrusion device, a casting device, a shaping component, a conveying shaft, an electrode, a rapid cooling component, a trimming device, a cutting device and a winding device; the cutting device comprises a cutting tool assembly and a synchronous drive assembly; the cutting tool assembly comprises a cutting tool and a lifting assembly, and the synchronous drive assembly comprises a slide rail, a supporting platform and a detachable connecting assembly, and the detachable connecting assembly connects the supporting platform to the conveyed film to be cut, so that the cutting tool can move synchronously with the film to be cut. According to the above technical solution, the present invention utilizes a synchronously moving cutting device to achieve damage-free cutting during a completely synchronous movement process, so as to achieve the purpose of preventing a decrease in production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of resin packaging films, and more particularly to a resin coating packaging film production line and a production process thereof. Background Art

[0002] Coatings using synthetic resins as their primary film-forming substance are called synthetic resin coatings. Based on petrochemical products, these coatings come in a wide variety of styles and offer excellent performance, making them a staple of modern coatings. In recent decades, due to the rapid growth of the petrochemical industry, synthetic resin coatings have become the core of the coatings industry, accounting for over 70% of total coatings production.

[0003] The Chinese invention patent with the existing patent publication number CN114148036A discloses a packaging film production line, comprising a control system, a frame, and an unwinding section, a conveying section, a punching section, and a cutting section arranged in sequence. The unwinding section is located on one side of the frame, and the conveying section, the punching section, and the cutting section are all mounted on the frame. The unwinding section, the conveying section, the punching section, and the cutting section are all electrically connected to the control system. The unwinding section includes an unwinding bracket, an unwinding roller, a deflection correction mechanism, and a plurality of first guide rollers rotatably connected to the unwinding bracket. The unwinding roller is rotatably connected to the deflection correction mechanism, and the deflection correction mechanism is movably connected to the unwinding bracket. The deflection correction mechanism timely adjusts the position of the unwinding roller, so that the packaging film and packaging bags fed from the unwinding roller can remain in the same straight line when passing through the conveying mechanism to the subsequent processing station, thereby reducing processing errors of the packaging bags and improving the production quality of the packaging bags.

[0004] However, the winding structure in the prior art is not easy to operate during use; in addition, the cutting edge of the film causes wrinkles due to the high temperature, resulting in a decrease in product quality; finally, the cutting structure requires pausing the transmission of the production line during the cutting process, resulting in a decrease in product production efficiency, and the acceleration of multiple pauses and starts will also cause slight damage to the pulling of the film, so there is room for improvement. Summary of the Invention

[0005] In response to the technical problem raised in the background technology that the cutting structure requires pausing the production line during the cutting process, resulting in a decrease in production efficiency, the present invention utilizes a synchronous motion cutting device to achieve damage-free cutting during a completely synchronous motion process, thereby preventing a decrease in production efficiency.

[0006] To achieve the above object, the present invention provides the following technical solution 1:

[0007] A resin coating packaging film production line, comprising a melting and stirring device, a filtering device, an extruding device, a casting device, a shaping component, a conveying shaft, an electrode, a rapid cooling component, a trimming device, a cutting device and a winding device;

[0008] The trimming device includes a trimming tool and a processing box body, wherein the trimming tool is cyclically mounted inside the processing box body, and the processing box body is used to cool, squeeze and clean the trimming tool;

[0009] The cutting device includes a cutting tool assembly and a synchronous drive assembly; the cutting tool assembly includes a cutting tool and a lifting assembly, and the lifting assembly drives the cutting tool to rise and fall to perform cutting operations; the synchronous drive assembly includes a slide rail, a supporting platform and a detachable connection assembly, the supporting platform is slidably installed on the slide rail, the lifting assembly and the detachable connection assembly are installed in parallel on the supporting platform, and the detachable connection assembly connects the supporting platform to the conveyed film to be cut, so that the cutting tool can move synchronously with the film to be cut.

[0010] Through the above technical solution, in terms of optimizing the trimming device, the improved solution is first to use a rotatably mounted circulating rotary tool for trimming. Secondly, based on the problem that the trimming tool may wrinkle due to high temperature caused by friction during actual use, the solution is provided with a processing box to effectively solve this problem and improve the production quality of the film.

[0011] In the optimization of the cutting device, in order to achieve cutting of the film without stopping the rotation, some cutting devices in the prior art also choose to use a synchronous motor with the same speed to drive the cutting tool movement, or choose to use the same motor as the film transmission shaft to rotate synchronously to drive the cutting tool movement. Then there will be a speed difference between the two. In the former, there will definitely be some motion errors between the two motors. In the latter, due to the slight sliding error of the film on the transmission shaft, there will also be errors during cutting, resulting in the cutting tool being in close contact after contacting the film and before the film is cut, and the film is damaged due to the motion error. Therefore, the technical solution of the present invention adopts a production equipment mechanism in which the cutting tool directly moves synchronously with the film, and specifically uses a detachable connection component to achieve true synchronous movement of the cutting device and the film.

[0012] The present invention is further configured as follows: the processing box body includes a box body, an elastic extrusion plate, a cooling detergent storage chamber and a nozzle, the trimming tool rotates between the elastic extrusion plates, the nozzle is arranged on the side of the trimming tool, and the nozzle is connected to the cooling detergent storage chamber.

[0013] Through the above technical solution, the elastic extrusion plate plays the role of extrusion cleaning, and the cooling cleaning agent plays the role of cooling and cleaning, so that the trimming tool can ensure cutting in a clean and low-temperature environment, preventing the trimming tool from melting the film due to high temperature, which will cause a sharp decline in trimming effect.

[0014] The present invention is further configured as follows: the detachable connection assembly includes a lifting rod and an adsorption head, and the adsorption head is connected to the film to be cut by negative pressure adsorption.

[0015] Through the above technical solution, the lifting rod is used to drive the adsorption connection and loosen the connection between the adsorption head and the film, and the adsorption head can adopt a negative pressure adsorption connection head.

[0016] The present invention is further configured as follows: the winding device includes three parts: a frame, a winding assembly and a limiting assembly;

[0017] The frame is a two-column structure with a roll clamping interface provided on one side of the top for mounting and fixing the two end shafts of the roll, and a mounting block provided on the same side of the bottom for mounting the winding assembly;

[0018] The winding assembly includes a rotating shaft and a support frame, wherein the rotating shaft is rotatably arranged on the mounting block, the support frame is fixed on the rotating shaft, and a support opening is provided at the top of the support frame, and the two end shafts of the material roll are simultaneously installed and placed in the support opening;

[0019] Among them, the limiting assembly includes a driving member and a limiting column, the driving member is installed on the top of the frame, the limiting column moves through the frame and extends into the material roll card interface, and the driving connection between the driving member and the limiting column is used to drive whether the limiting column extends into the material roll card interface.

[0020] Through the above technical solution, when changing the roll, the driving part drives the limit column to rise, so that the two end shafts of the material roll slide out of the material roll clamping interface and fall into the support opening at the top of the support frame. The support frame is rotated, and the support frame and the rotating shaft rotate, so that the support frame is moved away from the bottom of the material roll clamping interface and the material roll is moved to the same height as the ground, so that it is easy to take out the material roll.

[0021] The present invention is further configured such that: the rotating shaft is rotatably arranged between the mounting blocks via a rotating bearing.

[0022] The present invention is further configured as follows: the shaping component includes a pre-shaping roller group, a thickness scanning device and a correcting shaping roller group, and the thickness scanning device is arranged between the pre-shaping roller group and the correcting shaping roller group.

[0023] Through the above technical solution, the thickness of the film can be corrected in this way to prevent the one-time casting thickness from being inconsistent with the set thickness, thereby performing detection and measurement through a thickness scanning device.

[0024] The present invention is further configured such that the melting and stirring device, the filtering device and the extruding device are integrated into one casting prefabrication device.

[0025] Through the above technical solution, the main effect of the integrated setting is to save installation space and simplify the operation process of the production process.

[0026] The present invention is further configured as follows: the filtering device is configured as a tubular filtering structure, and the melting and stirring device and the extrusion device are connected via the filtering device.

[0027] Through the above technical solution, the filtering device plays the role of filtering and conveying materials at the same time.

[0028] To achieve the above object, the present invention provides the following technical solution 2:

[0029] A production process for a resin coating packaging film comprises the following steps:

[0030] Step 1: Use cast film prefabrication equipment to perform melting, filtering and extrusion operations;

[0031] Step 2: Use a casting device to perform casting process;

[0032] Step 3: Use shaping components to shape the thickness;

[0033] Specifically, the pre-forming is first performed by the pre-forming roller group, the thickness is then measured by the thickness scanning device, and finally the thickness is confirmed by the correction forming roller group;

[0034] Step 4: Use the conveyor shaft to carry out the whole process of transportation;

[0035] Step 5: Use electrodes to perform corona treatment on the film;

[0036] Step 6: Cool the film using a rapid cooling component;

[0037] Step 7: Use the trimming device to trim the film to be rolled;

[0038] Step 8: Cut the film using a cutting device;

[0039] Step 9: Use the winding device to roll up the film.

[0040] Through the above technical solution, efficient production of packaging film can be achieved.

[0041] The present invention is further configured to utilize a cutting device to cut the film without stopping the film conveyance.

[0042] Through the above technical solution, efficient production of packaging film can be achieved.

[0043] In summary, the present invention has the following beneficial effects:

[0044] (1) In terms of the optimization of the trimming device, the improvement plan is to first use a rotary rotary cutter installed in a rotating manner to perform the trimming operation. Secondly, based on the problem that the trimming cutter may wrinkle due to the high temperature caused by friction during actual use, the present solution is provided with a processing box to effectively solve this problem and improve the production quality of the film.

[0045] (2) In the optimization of the cutting device, in order to achieve the cutting of the film without stopping the rotation, some cutting devices in the prior art also choose to use a synchronous motor with the same speed to drive the cutting tool to move, or choose to use the same motor as the film transmission shaft to rotate synchronously to drive the cutting tool to move. Then there will be a speed difference between the two. In the former, there will definitely be some motion errors between the two motors. In the latter, due to the slight sliding error of the film on the transmission shaft, there will also be errors during cutting, which will cause the cutting tool to be in close contact after contacting the film and before cutting the film. Due to the motion error, the film is damaged. Therefore, the technical solution of the present invention adopts a production equipment mechanism in which the cutting tool directly moves synchronously with the film, and specifically uses a detachable connection component to achieve true synchronous movement of the cutting device and the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is the overall production process flow chart of the packaging film production line;

[0047] Figure 2 This is a schematic diagram of the overall structure of the tape casting prefabrication equipment;

[0048] Figure 3 It is a schematic diagram of the overall three-dimensional structure of the winding device;

[0049] Figure 4 It is a schematic diagram of the overall structure of the trimming device and the cutting device;

[0050] Figure 5 Schematic diagram of the overall structure of the trimming device.

[0051] Figure numerals: 1, melting stirring device; 2, filtering device; 3, extrusion device; 4, casting device; 5, shaping assembly; 5-1, pre-shaping roller group; 5-2, thickness scanning device; 5-3, correcting shaping roller group; 6, conveying shaft; 7, electrode; 8, rapid cooling assembly; 9, trimming device; 9-1, trimming tool; 9-2, processing box body; 9-21, box body; 9-22, elastic extrusion plate; 9-23, cooling detergent storage chamber; 9-24, nozzle; 10, cutting device; 10-1, cutting tool assembly; 10-11, Cutting tool; 10-12, lifting assembly; 10-2, synchronous drive assembly; 10-21, slide rail; 10-22, carrying platform; 10-23, detachable connection assembly; 10-231, lifting rod; 10-232, adsorption head; 11, winding device; 12, frame; 12-1, material roll card interface; 12-2, mounting block; 13, winding assembly; 13-1, rotating shaft; 13-2, support frame; 13-3, support port; 14, limit assembly; 14-1, driving part; 14-2, limit column; 15, cast film prefabrication equipment. DETAILED DESCRIPTION

[0052] The present invention will be further described in detail below with reference to the embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0053] A resin coating packaging film production line, combined with Figure 1 and Figure 2 As can be seen, the apparatus comprises a melt stirring device 1, a filter device 2, an extruder 3, a casting device 4, a shaping assembly 5, a conveyor shaft 6, an electrode 7, a rapid cooling assembly 8, a trimming device 9, a cutting device 10, and a winding device 11. The melt stirring device 1, the filter device 2, and the extruder 3 are integrated into a casting prefabrication device 15.

[0054] The production process of the above resin coating packaging film production line includes the following steps:

[0055] Step 1: Use the casting prefabrication equipment 15 to perform melting, filtering and extrusion operations.

[0056] Step 2: Use the casting device 4 to perform casting process.

[0057] Step 3: Use the shaping component 5 to perform thickness shaping; specifically, first perform pre-shaping through the pre-shaping roller group 5-1, then measure the thickness through the thickness scanning device 5-2, and finally use the correction shaping roller group 5-3 to confirm the thickness.

[0058] Step 4: Use the conveying shaft 6 to carry out the whole process of transportation; electrode 7, rapid cooling component 8, trimming device 9, cutting device 10 and winding device 11.

[0059] Step 5: Use electrode 7 to perform corona treatment on the film.

[0060] Step 6: Use the rapid cooling component 8 to cool the film.

[0061] Step 7: Use the trimming device 9 to trim the edges of the film being wound. Regarding the optimization of the trimming device, the improved solution firstly uses a rotatably mounted circulating rotary cutter for trimming. Secondly, due to the problem of wrinkles caused by high temperatures generated by friction during actual use of the trimming cutter, this solution provides a processing box to effectively solve this problem and improve film production quality.

[0062] Step 8: Use the cutting device 10 to cut the film, and use the cutting device 10 to cut the film without stopping the conveying. In the optimization of the cutting device 10, in order to be able to cut the film without stopping the rotation, some cutting devices in the prior art choose to use a synchronous motor with the same speed to drive the cutting tool to move, or choose to use the same motor as the film transmission shaft to rotate synchronously to drive the cutting tool to move. Then there will be a speed difference between the two. In the former, there will definitely be some motion errors between the two motors. In the latter, since the film has a slight sliding error on the conveying shaft, there will also be errors during cutting, which will cause the cutting tool to be in close contact after contacting the film and before the film is cut. Due to the motion error, the film is damaged. Therefore, the technical solution of the present invention adopts a production equipment mechanism in which the cutting tool directly moves synchronously with the film, and specifically uses a detachable connecting component to achieve true synchronous movement of the cutting device and the film.

[0063] Step 9: Use the winding device 11 to wind the film. When changing the roll, the driver drives the limit column to rise, causing the two end shafts of the roll to slide out of the roll clamp interface and fall into the support opening at the top of the support frame. The support frame is rotated, and the support frame and the rotating shaft rotate, allowing the support frame to move away from the bottom of the roll clamp interface and move the roll to the same height as the ground, making it easier to remove the roll.

[0064] Regarding the structure of the production line, refer to Figure 3-Figure 5As can be seen, the trimming device 9 includes a trimming tool 9-1 and a processing box 9-2. The trimming tool 9-1 is mounted and circulated within the processing box 9-2, which is used to cool, squeeze, and clean the trimming tool 9-1. The processing box 9-2 includes a box body 9-21, an elastic squeezing plate 9-22, a cooling detergent storage chamber 9-23, and a nozzle 9-24. The trimming tool 9-1 rotates between the elastic squeezing plates 9-22. The nozzle 9-24 is located on the side of the trimming tool 9-1 and is connected to the cooling detergent storage chamber 9-23.

[0065] At the same time, the cutting device 10 includes a cutting tool assembly 10-1 and a synchronous drive assembly 10-2; the cutting tool assembly 10-1 includes a cutting tool 10-11 and a lifting assembly 10-12, and the lifting assembly 10-12 drives the cutting tool 10-11 to rise and fall to perform cutting operations; the synchronous drive assembly 10-2 includes a slide rail 10-21, a supporting platform 10-22 and a detachable connection assembly 10-23, and the supporting platform 10-22 is slidably installed on the slide rail 10-21, and the lifting assembly 10-12 and the detachable connection assembly 10-23 are installed in parallel on the supporting platform 10-22, and the detachable connection assembly 10-23 connects the supporting platform 10-22 to the conveyed film to be cut, so that the cutting tool 10-11 can move synchronously with the film to be cut.

[0066] The detachable connecting component 10-23 includes a lifting rod 10-231 and an adsorption head 10-232, and the adsorption head 10-232 is connected to the film to be cut by negative pressure adsorption.

[0067] The winding device 11 comprises a frame 12, a winding assembly 13, and a limiting assembly 14. The frame 12 is a two-column structure with a roll clamping interface 12-1 on one side of its top for mounting the two end shafts of the roll. A mounting block 12-2 is provided on the same side of its bottom for mounting the winding assembly 13.

[0068] The winding assembly 13 includes a rotating shaft 13-1 and a support frame 13-2. The rotating shaft 13-1 is rotatably mounted on the mounting block 12-2. The support frame 13-2 is fixed to the rotating shaft 13-1. The top of the support frame 13-2 is provided with a support opening 13-3. The two end shafts of the material roll are simultaneously mounted in the support opening 13-3. The rotating shaft 13-1 is rotatably mounted between the mounting blocks 12-2 via a rotating bearing.

[0069] Among them, the limiting assembly 14 includes a driving member 14-1 and a limiting column 14-2. The driving member 14-1 is installed on the top of the frame 12, and the limiting column 14-2 moves through the frame 12 and extends into the material roll card interface 12-1. The driving connection between the driving member 14-1 and the limiting column 14-2 is used to drive whether the limiting column 14-2 extends into the material roll card interface 12-1.

[0070] In addition, the filtering device 2 is configured as a tubular filtering structure, and the melt stirring device 1 and the extrusion device 3 are connected via the filtering device 2. The shaping assembly 5 includes a pre-shaping roller group 5-1, a thickness scanning device 5-2, and a corrective shaping roller group 5-3, wherein the thickness scanning device 5-2 is disposed between the pre-shaping roller group 5-1 and the corrective shaping roller group 5-3.

[0071] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A resin coating packaging film production line, comprising a melt stirring device (1), a filtering device (2), an extruding device (3), a casting device (4), a shaping assembly (5), a conveying shaft (6), an electrode (7), a rapid cooling assembly (8), a trimming device (9), a cutting device (10) and a winding device (11), characterized in that: The trimming device (9) comprises a trimming tool (9-1) and a processing box body (9-2); the trimming tool (9-1) is cyclically mounted inside the processing box body (9-2); and the processing box body (9-2) is used to cool, squeeze, and clean the trimming tool (9-1); The processing box body (9-2) comprises a box body (9-21), an elastic extrusion plate (9-22), a cooling detergent storage chamber (9-23) and a nozzle (9-24); the trimming tool (9-1) rotates between the elastic extrusion plates (9-22); the nozzle (9-24) is arranged on the side of the trimming tool (9-1); and the nozzle (9-24) is communicated with the cooling detergent storage chamber (9-23); The cutting device (10) comprises a cutting tool assembly (10-1) and a synchronous drive assembly (10-2); the cutting tool assembly (10-1) comprises a cutting tool (10-11) and a lifting assembly (10-12); the lifting assembly (10-12) drives the cutting tool (10-11) to move up and down to perform a cutting operation; the synchronous drive assembly (10-2) comprises a slide rail (10-21), a bearing platform (10-22) and a detachable connection assembly (10-23); the bearing platform (10-22) is slidably mounted on the slide rail (10-21); the lifting assembly (10-12) and the detachable connection assembly (10-23) are mounted in parallel on the bearing platform (10-22); the detachable connection assembly (10-23) connects the bearing platform (10-22) to the transported film to be cut, so that the cutting tool (10-11) can move synchronously with the film to be cut; The detachable connection assembly (10-23) comprises a lifting rod (10-231) and an adsorption head (10-232), and the adsorption head (10-232) is connected to the film to be cut by negative pressure adsorption.

2. The resin coating packaging film production line according to claim 1, characterized in that: The winding device (11) comprises three parts: a frame (12), a winding assembly (13) and a limiting assembly (14); The frame (12) is a two-column structure and a material roll clamping interface (12-1) is provided on one side of the top thereof for mounting and fixing the two end shafts of the material roll, and a mounting block (12-2) is provided on the same side of the bottom thereof, and the mounting block (12-2) is used for mounting the winding assembly (13); The winding assembly (13) comprises a rotating shaft (13-1) and a support frame (13-2); the rotating shaft (13-1) is rotatably mounted on the mounting block (12-2); the support frame (13-2) is fixed on the rotating shaft (13-1); a support opening (13-3) is provided at the top end of the support frame (13-2); and two end shafts of the material roll are simultaneously mounted and placed in the support opening (13-3); The limiting assembly (14) includes a driving member (14-1) and a limiting column (14-2), wherein the driving member (14-1) is installed on the top of the frame (12), and the limiting column (14-2) moves through the frame (12) and extends into the material roll clamp interface (12-1), and the driving connection between the driving member (14-1) and the limiting column (14-2) is used to drive whether the limiting column (14-2) extends into the material roll clamp interface (12-1).

3. The resin coating packaging film production line according to claim 2, characterized in that: The rotating shaft (13-1) is rotatably arranged between the mounting blocks (12-2) via a rotating bearing.

4. The resin coating packaging film production line according to claim 1, characterized in that: The shaping assembly (5) comprises a pre-shaping roller group (5-1), a thickness scanning device (5-2) and a correcting shaping roller group (5-3), wherein the thickness scanning device (5-2) is arranged between the pre-shaping roller group (5-1) and the correcting shaping roller group (5-3).

5. The resin coating packaging film production line according to claim 1, characterized in that: The melting and stirring device (1), the filtering device (2) and the extruding device (3) are integrated into a casting prefabrication device (15).

6. The resin coating packaging film production line according to claim 5, characterized in that: The filtering device (2) is configured as a tubular filtering structure, and the melting and stirring device (1) and the extrusion device (3) are connected via the filtering device (2).

7. A production process for a resin coating packaging film, characterized in that: The production line for resin coating packaging film according to claim 1 is used to produce resin coating packaging film, comprising the following steps: Step 1: Use cast film prefabrication equipment to perform melting, filtering and extrusion operations; Step 2: Use a casting device to perform casting process; Step 3: Use the shaping component (5) to shape the thickness; Specifically, the pre-forming is first performed by the pre-forming roller group (5-1), the thickness is then measured by the thickness scanning device (5-2), and finally the thickness is confirmed by the correction forming roller group (5-3); Step 4: Use the conveying shaft (6) to carry out the whole process of conveying; Step 5: using electrodes (7) to perform corona treatment on the film; Step 6: Cooling the film using a rapid cooling component (8); Step 7: Using the trimming device (9) to trim the film to be rolled; Step 8: Cutting the film using a cutting device (10); Step 9: Use the winding device (11) to carry out the film winding operation.

8. The production process of a resin coating packaging film according to claim 7, characterized in that: The cutting device (10) is used to cut the film without stopping the film conveyance.

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