Rewinding inspection process of film for rewinding machine

Abstract

The invention discloses a rewinding inspection process of a film for a rewinding machine, which comprises the following steps that: a defect inspection device performs defect inspection on the film in transmission, when the defect inspection device inspects the defect on the film, the defect is fed to a cutting and bonding station, two adsorption devices are close to corresponding transmission rollers to clamp the film transmitted on the transmission rollers, and the film is cut off and bonded on the transmission rollers; the cutting-off device cuts off the defect part, the two adsorption devices drive the two cut-off ends of the thin film to be close to each other through the moving mechanism till the cut-off end of the thin film is located at the gluing station, and the gluing device glues the surface of the end of the thin film adsorbed by the adsorption devices. The two adsorption devices continue to move through the moving mechanisms to get close to each other so as to adhere the two cut-off ends of the film, the two adsorption devices get away from each other through the moving mechanisms and then return to the original positions, the unwinding device and the winding device are restarted to continue to rewind the film, and therefore automatic cutting of the bad position of the plastic film is achieved. And defective positions do not need to be removed after re-unwinding.

Description

Technical Field

[0001] The present application relates to the technical field of unfolding and relaxing strip materials, and in particular to a rewinding inspection process for a film used in a rewinding machine. Background Art

[0002] The plastic raw materials are formed by the screw extruder, die head, and traction rollers before being rolled up to form plastic film coils. During the heating, extrusion, forming, film formation, traction, flattening, and rolling process, defects may occur in the plastic film. Therefore, the plastic film needs to be rewound and inspected after it is rolled up.

[0003] The utility model patent with announcement number CN211664347U records a slitting and rewinding system for an automatic defect inspection machine, including a rewinding system, a slitting and rewinding inspection system, a data server and an automatic coating defect inspection system. The automatic coating defect inspection system and the slitting and rewinding inspection system are both connected to the server, and the slitting and rewinding inspection system is connected to the rewinding machine system.

[0004] The above-mentioned slitting and rewinding system can only detect defects in the coating production materials detected by the coating defect automatic inspection machine, generate production slitting and rewinding shutdown records, and accurately stop the defective positions for personnel to review or remove them. It is necessary to manually re-reel and re-judge or manually remove the defective positions, and the defective positions cannot be automatically removed, resulting in low efficiency in removing film defects. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a film rewinding inspection process for a rewinding machine that can automatically cut off the defective position of the plastic film, and the technical solution adopted includes:

[0006] A rewinding inspection process for a film used in a rewinding machine, the rewinding machine comprising a frame and an unwinding device, a conveying roller, and a rewinding device installed on the frame, the film roll on the unwinding device is conveyed by a plurality of conveying rollers and then rewinded on the rewinding device, the rewinding inspection process for the film used in the rewinding machine comprising:

[0007] Step 1: The rewinding machine is provided with an inspection station, a cutting and bonding station and a gluing station in sequence along the conveying direction of the film. Two adsorption devices and a cutting device distributed between the two adsorption devices are provided at the cutting and bonding station. The two adsorption devices are respectively located on the circumference sides of two adjacent conveying rollers, and the gluing station is distributed between the two adsorption devices.

[0008] Step 2: The defect inspection device at the inspection station inspects defects on the film being transported. When the defect inspection device detects defects on the film, the unwinding device and the rewinding device feed the defective part to the cutting and bonding station, and the unwinding device and the rewinding device stop running;

[0009] Step 3, the two adsorption devices are respectively moved close to the corresponding conveying rollers through the moving mechanism to clamp the film conveyed on the conveying rollers;

[0010] Step 4: The cutting device cuts off the defective part;

[0011] Step 5, the two adsorption devices are driven by the moving mechanism to move the two ends of the cut film closer to each other until one end of the film is located at the gluing station. After the gluing device applies glue to the surface of the end of the film adsorbed by the adsorption device, the two adsorption devices are moved closer to each other by the moving mechanism to bond the two ends of the film. The two adsorption devices are moved away from each other by the moving mechanism and then return to their original positions.

[0012] Step 6: The unwinding device and the rewinding device are restarted to continue rewinding the film.

[0013] A technical solution adopted by an embodiment of the present invention to solve the technical problem is: two adsorption devices are respectively arranged on two opposite sides of the film.

[0014] A technical solution adopted by an embodiment of the present invention to solve the technical problem is: the cutting device includes two cutting heads, and the two cutting heads are arranged between the two adsorption devices at intervals along the conveying direction of the film.

[0015] A technical solution adopted by an embodiment of the present invention to solve the technical problem is: the glue coating device is arranged between the two cutting heads.

[0016] A technical solution adopted by an embodiment of the present invention to solve its technical problem is: it also includes a waste collection device, which is arranged between the two adsorption devices and is used to collect defective parts of the film.

[0017] A technical solution adopted by an embodiment of the present invention to solve its technical problem is: the waste collection device includes a collection frame and a negative pressure device, the collection frame is arranged between two adsorption devices, and the negative pressure device is connected to the inside of the collection frame and is used to generate negative pressure in the collection frame.

[0018] The beneficial effects of the present invention are as follows: the rewinding inspection process for the film used in the rewinding machine can realize automatic cutting of defective positions of the plastic film, without the need to remove the defective positions after rewinding, which is beneficial to improving the removal efficiency of film defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 Schematic diagram of the rewinding inspection process of the film for the rewinding machine in the embodiment of the present application Figure 1 ;

[0021] Figure 2 Schematic diagram of the rewinding inspection process of the film for the rewinding machine in the embodiment of the present application Figure 2 ;

[0022] Figure 3 Schematic diagram of the rewinding inspection process of the film for the rewinding machine in the embodiment of the present application Figure 3 . DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0024] In the description of the present invention, the meaning of "above", "below", "exceed", etc. is not inclusive of the number itself, and the meaning of "above", "below", "within", etc. is inclusive of the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0027] Reference Figure 1-3 , an embodiment of the present application is proposed, the rewinding inspection process of the film for the rewinding machine described in the embodiment is used for the rewinding machine, the rewinding machine includes a frame and a reeling device 10, a conveying roller 20, and a rewinding device 30 installed on the frame, the film roll on the reeling device 10 is conveyed by a plurality of conveying rollers 20 and then reeled on the rewinding device 30, the rewinding inspection process of the film for the rewinding machine includes:

[0028] Step 1: The rewinding machine is provided with an inspection station, a cutting and bonding station and a gluing station in sequence along the conveying direction of the film. Two adsorption devices 60 and a cutting device 40 distributed between the two adsorption devices are provided at the cutting and bonding station. The two adsorption devices 60 are respectively located on the peripheral sides of two adjacent conveying rollers 20, and the gluing station is distributed between the two adsorption devices 60.

[0029] Step 2: The defect inspection device at the inspection station inspects defects on the film being transported. When the defect inspection device detects defects on the film, the unwinding device 10 and the rewinding device 30 feed the defect to the cutting and bonding station, and the unwinding device 10 and the rewinding device 30 stop running;

[0030] Step 3, the two adsorption devices 60 are respectively moved close to the corresponding conveying rollers 20 through the moving mechanism 70 to clamp the film conveyed on the conveying rollers 20;

[0031] Step 4, the cutting device 40 cuts off the defective part;

[0032] Step 5, the two adsorption devices 60 respectively drive the two ends of the cut film to approach each other through the moving mechanism 70, until one end of the cut film is located at the gluing station, and after the gluing device 50 applies glue to the surface of the end of the film adsorbed by the adsorption device 60, the two adsorption devices 60 continue to move closer to each other through the moving mechanism 70 to bond the two ends of the cut film, and the two adsorption devices 60 respectively move away from each other through the moving mechanism 70 and return to their original positions;

[0033] Step 6: The unwinding device 10 and the rewinding device 30 are restarted to continue rewinding the film.

[0034] See attached Figure 1 As shown, during the normal operation of the rewinding inspection process for the film of the rewinding machine, the two adsorption devices 60 are at a position away from the plastic film, and the defect inspection mechanism inspects both sides of the plastic film;

[0035] See attached Figure 2 As shown, when a bad position is detected on the plastic film, the unwinding device 10, the conveying roller 20, and the rewinding device 30 convey the bad position to between the two adsorption devices 60 and then stop running. At this time, the two adsorption devices 60 are respectively moved close to the corresponding conveying roller 20 under the action of the corresponding moving mechanism 70 to clamp the film;

[0036] After the two adsorption devices 60 clamp the film with the corresponding conveying rollers 20, the cutting device 40 cuts the film between the two adsorption devices 60 and removes the defective parts; in this embodiment, the two cutting devices 40 are two cutting heads, and the two cutting heads can be laser cutters or pneumatic cutters, and the laser cutter can directly cut the film.

[0037] In this embodiment, the glue coating device 50 is arranged between the two cutting heads. After the defective part is cut off, the two adsorption devices 60 respectively generate negative pressure to adsorb the two ends of the cut film, and under the drive of the corresponding moving mechanism 70, the two ends of the cut film are driven to approach each other along the conveying direction of the film until the end of the cut film adsorbed by one of the adsorption devices 60 is located below the glue coating device 50. The glue coating device 50 coats the surface of the cut end of the film with glue and then returns to the moving mechanism 70 to its original position. In this embodiment, the glue coating device 50 includes a glue coating nozzle, which is installed on one side of the film through a glue coating drive mechanism. The glue coating drive mechanism drives the glue coating nozzle close to the film to spray glue and then drives it away from the film.

[0038] See attached Figure 3 As described, after the glue coating is completed, the two adsorption devices 60 respectively adsorb the two ends of the cut film and continue to approach and fit together to adhere the two ends of the cut film. After that, the two adsorption devices 60 release the adsorption of the film, and the unwinding device 10, the conveying roller 20, and the winding device 30 are restarted to complete the removal of the defective position of the plastic film. There is no need to remove the defective position after rewinding, which is beneficial to improving the efficiency of removing film defects.

[0039] In the present application, the adsorption device 60 includes an adsorption plate with a hollow interior, and a plurality of adsorption holes are provided on the side of the adsorption plate close to the film. The vacuum device is connected to the interior of the adsorption plate to generate negative pressure inside the adsorption plate to achieve adsorption of the film.

[0040] As shown in the accompanying drawings, the moving mechanism 70 is a two-dimensional driving mechanism, which can drive the adsorption device 60 to move along the conveying direction of the film, and can also drive the adsorption device 60 to move closer to or away from the film. The glue coating device 50 adopts the existing technology, for example, it is composed of a plurality of glue spray heads arranged. The glue coating device 50 is installed on the frame through a lifting mechanism, and the lifting mechanism can drive the glue coating device 50 to move up and down to achieve close to the film for glue coating, or away from the film.

[0041] As shown in the accompanying drawings, two adsorption devices 60 are respectively arranged on opposite sides of the film, so that the two adsorption devices 60 drive the two ends of the cut film to move to correspond to each other under the action of the moving mechanism 70, and then the two adsorption devices 60 are driven by the moving mechanism 70 to approach each other to achieve mutual adhesion of the two ends of the cut film.

[0042] Preferably, after the defective position is cut off, since the weight of the cut film is relatively light, in order to avoid the cut film affecting the subsequent process, a waste collection device 80 is also included. The waste collection device 80 is arranged between the two adsorption devices 60 and is used to collect the defective parts of the film.

[0043] Specifically, the waste collecting device 80 includes a collecting frame and a negative pressure device. The collecting frame is disposed between the two adsorption devices 60 . The negative pressure device is connected to the inside of the collecting frame and is used to generate negative pressure in the collecting frame.

[0044] When the cutting device 40 approaches the film under the action of the cutting drive mechanism to cut the film between the two adsorption devices 60 and remove the defective parts, the two adsorption devices 60 clamp the film with the corresponding conveying rollers 20, and the negative pressure device generates negative pressure in the collection frame to collect the cut defective positions into the collection frame.

[0045] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A rewinding inspection process for a film for a rewinding machine, characterized in that: The rewinding machine comprises a frame and an unwinding device (10), a conveying roller (20), and a rewinding device (30) mounted on the frame. The film roll on the unwinding device (10) is conveyed by a plurality of conveying rollers (20) and then rewound on the rewinding device (30). The rewinding inspection process of the film used in the rewinding machine comprises: Step 1: The rewinding machine is provided with an inspection station, a cutting and bonding station and a gluing station in sequence along the conveying direction of the film, two adsorption devices (60) and a cutting device (40) distributed between the two adsorption devices are provided at the cutting and bonding station, the two adsorption devices (60) are respectively located on the peripheral sides of two adjacent conveying rollers (20), and the gluing station is distributed between the two adsorption devices (60); Step 2: The defect inspection device at the inspection station inspects defects on the film being transported. When the defect inspection device detects defects on the film, the unwinding device (10) and the rewinding device (30) feed the defect to the cutting and bonding station, and the unwinding device (10) and the rewinding device (30) stop running. Step 3, the two adsorption devices (60) are respectively moved close to the corresponding conveying rollers (20) through the moving mechanism (70) to clamp the film conveyed on the conveying rollers (20); Step 4: The cutting device (40) cuts off the defective part; Step 5, the two adsorption devices (60) are respectively driven by the moving mechanism (70) to move the two ends of the cut film closer to each other until one end of the cut film is located at the gluing station. After the gluing device (50) applies glue to the surface of the end of the film adsorbed by the adsorption device (60), the two adsorption devices (60) are respectively moved closer to each other by the moving mechanism (70) to bond the two ends of the cut film. The two adsorption devices (60) are respectively moved away from each other by the moving mechanism (70) and then return to their original positions. Step 6: The unwinding device (10) and the rewinding device (30) are restarted to continue rewinding the film.

2. The rewinding inspection process for a film for a rewinding machine according to claim 1, characterized in that: The two adsorption devices (60) are respectively arranged on two opposite sides of the film.

3. The rewinding inspection process for a film for a rewinding machine according to claim 1, characterized in that: The cutting device (40) comprises two cutting heads, and the two cutting heads are arranged between the two adsorption devices (60) at intervals along the conveying direction of the film.

4. The rewinding inspection process for a film for a rewinding machine according to claim 3, characterized in that: The glue coating device (50) is arranged between the two cutting heads.

5. The rewinding inspection process for a film for a rewinding machine according to claim 1, characterized in that: The invention also comprises a waste collection device (80), wherein the waste collection device (80) is arranged between the two adsorption devices (60) and is used for collecting defective parts of the film.

6. The rewinding inspection process for a film for a rewinding machine according to claim 5, characterized in that: The waste collection device (80) comprises a collection frame and a negative pressure device, the collection frame is arranged between two adsorption devices (60), and the negative pressure device is connected to the inside of the collection frame and is used to generate negative pressure in the collection frame.

Images