Coating glue discharging device

Abstract

The utility model discloses a coating glue discharging device which comprises a glue discharging hopper, a hose is arranged in the glue discharging hopper, a needle head is arranged at the bottom end of the glue discharging hopper, a telescopic mechanism is arranged on the outer side face of the glue discharging hopper, an adjusting mechanism is arranged on the lower portion of the glue discharging hopper, and the telescopic mechanism is used for adjusting the height of the glue discharging hopper. According to the device, through the arrangement and cooperation of the lower glue hopper, the hose, the needle head and the like, the sharp end of the needle head can stretch into a gap between an optical film and the rolling wheel, the impact of UV glue dripping on the optical film is greatly reduced, the glue dripping speed is increased, and the service life of the optical film is prolonged. And the sharp end of the needle head extends into the accumulation area along with the accumulation of the UV glue, so that ripple caused by dripping of the UV glue from the upper part of the accumulation area is avoided, the formation of transverse stripe lines on the optical film is reduced and avoided, the glue coating effect of the optical film is better, the structural arrangement is simple and efficient, and the device is suitable for popularization and application.

Description

Technical Field

[0001] This utility model relates to the field of optical film production equipment technology, specifically a coating and adhesive removal device. Background Technology

[0002] A coating machine is a specialized tool used to apply adhesives to surface materials. Among them, the UV coating machine is one type. The working principle of the UV coating machine is to use rollers with microstructures to roll and apply UV adhesive to PET or PC optical films, and then cure it by irradiation with ultraviolet lamps, thereby forming a structural layer on the PET or PC optical film to achieve effects such as enhancing gloss and preventing privacy.

[0003] Currently, the working method of a UV adhesive coating machine is as follows: the raw material PET or PC optical film is wound from above the first roller to below the second roller and then out from above the third roller. UV adhesive is dripped onto the PET or PC optical film between the first and second rollers. After being rolled by the second roller, the UV adhesive is coated onto the PET or PC optical film, thus forming a U-shaped conveying path to complete the adhesive coating of the optical film.

[0004] However, when applying UV glue, a flexible tube is placed above the optical film, and the glue is dripped onto the optical film located between two rollers. Because the UV glue is dripped directly onto the optical film or the ripples caused by the UV glue accumulation area flow onto the optical film, this glue removal method results in horizontal stripes of varying degrees on the optical film at the location where the UV glue was dripped, i.e., glue marks. This leads to poor glue coating effect on the optical film, resulting in defects and even affecting its gloss enhancement and privacy protection effects. Therefore, a coating glue removal device is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a coating adhesive removal device to solve the problem that in the existing adhesive removal methods mentioned in the background art, the ripples caused by the direct dripping of adhesive onto the optical film or the accumulation of adhesive on the film will cause horizontal stripes to appear on the optical film.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a coating and discharging device, comprising a glue hopper for holding glue, a flexible tube inside the glue hopper, a needle at the bottom of the glue hopper, a telescopic mechanism on the outer side of the glue hopper, and an adjustment mechanism at the bottom of the glue hopper.

[0007] The telescopic mechanism is used to adjust the height of the lower glue hopper;

[0008] The adjustment mechanism includes a bolt threaded to the lower side wall of the lower glue hopper. The length of the bolt extending into the lower part of the lower glue hopper is controlled by rotating the bolt. The bolt is positioned higher than the bottom end of the hose on the lower glue hopper. The longer the bolt extends into the lower part of the lower glue hopper, the narrower the hose is squeezed, thereby controlling the flow rate of glue discharged through the hose.

[0009] Preferably, the telescopic mechanism includes a telescopic rod, the end of which is provided with a limiting sleeve, the bottom end of which is rotatably connected to a nut, the nut being threadedly connected to the limiting sleeve, the top end of which is fixedly connected to a connecting rod, and the end of which is fixedly connected to a circular sleeve, the circular sleeve being used to fit the lower glue hopper.

[0010] Preferably, a limiting post is fixedly connected to the bottom surface of the left end of the connecting rod, and a columnar hole is opened on the top surface of the limiting sleeve, with the limiting post located inside the columnar hole to restrict the connecting rod from rotating on the limiting sleeve.

[0011] Preferably, the top surface of the nut is provided with an inner rotating ring, which is rotatably connected inside the bottom end of the limiting sleeve, and is used to restrict the nut to rotate only at the bottom end of the limiting sleeve.

[0012] Preferably, the limiting sleeve is configured as a hollow cylinder, and the stud passes through the limiting sleeve and the nut.

[0013] Preferably, the telescopic rod has connecting ears on both sides of its left end for fixing the position of the telescopic rod.

[0014] Preferably, the lower glue hopper includes an upper inverted cone head and a lower through pipe.

[0015] Preferably, the top of the hose is located at the bottom of the inner side of the upper inverted cone of the lower glue hopper.

[0016] Preferably, the top of the hose is set in an inverted cone shape to prevent the hose from detaching from the upper inverted cone head of the lower glue hopper.

[0017] Preferably, the outer curved surfaces of the nut and bolt are both roughened to facilitate rotation.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This device, through the arrangement and cooperation of the glue hopper, tubing, and needle, utilizes the sharp end of the needle to extend into the gap between the optical film and the roller, greatly reducing the impact of UV glue dripping onto the optical film. Furthermore, as the sharp end of the needle extends into the accumulation area of ​​UV glue, it avoids ripples caused by UV glue dripping from above the accumulation area, thereby reducing or preventing the formation of transverse stripes on the optical film. This results in better glue coating of the optical film. The structure is simple, efficient, and suitable for widespread use.

[0020] 2. This device, through the coordinated design of telescopic and adjusting mechanisms, allows for the adjustment of the height of the ring sleeve containing the lower glue hopper by rotating the nut. This enables more precise insertion of the sharp end of the needle into the gap between the roller and the optical film. The rotation of the bolt adjusts the degree of compression on the tubing, thus conveniently and efficiently regulating the flow rate of UV glue to meet different production needs. This greatly improves the flexibility of the device, and its simple and efficient structure makes it suitable for widespread use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is an exploded view of the telescopic mechanism in this utility model;

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is an exploded view of the adjusting mechanism in this utility model;

[0025] Figure 5 This is an overall sectional view of the present invention;

[0026] Figure 6 This is a schematic diagram illustrating the application of this utility model.

[0027] In the diagram: 1. Lower glue hopper; 101. Hose; 102. Bolt; 2. Telescopic rod; 201. Limiting sleeve; 202. Stud; 203. Nut; 204. Connecting rod; 205. Limiting post; 206. Ring sleeve; 207. Connecting lug; 208. Inner swivel ring; 209. Columnar hole; 3. Needle; 4. Roller; 5. Optical film. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figure 1-6 As shown, this utility model provides a technical solution for a coating adhesive discharge device:

[0030] A glue dispensing device includes a glue hopper 1 for holding glue, a flexible tube 101 inside the glue hopper 1, a needle 3 at the bottom end of the glue hopper 1, a telescopic mechanism on the outer side of the glue hopper 1, and an adjustment mechanism at the bottom of the glue hopper 1. The telescopic mechanism is used to adjust the height of the glue hopper 1, and the adjustment mechanism includes a bolt 102 threaded to the lower side wall of the glue hopper 1. By rotating the bolt 102, the length of its extension into the lower part of the glue hopper 1 is controlled. The position of the bolt 102 on the glue hopper 1 is higher than the bottom end of the flexible tube 101. The longer the bolt 102 extends into the lower part of the glue hopper 1, the narrower the flexible tube 101 is squeezed, thereby controlling the flow rate of glue discharged through the flexible tube 101.

[0031] Furthermore, the telescopic mechanism includes a telescopic rod 2, with a limiting sleeve 201 at the end of the telescopic rod 2. A nut 203 is rotatably connected to the bottom end of the limiting sleeve 201, and the nut 203 is threadedly connected to the limiting sleeve 201. A connecting rod 204 is fixedly connected to the top end of the limiting sleeve 201, and an annular sleeve 206 is fixedly connected to the end of the connecting rod 204. The annular sleeve 206 is used to fit the lower glue hopper 1.

[0032] It should be noted that a limiting post 205 is fixedly connected to the bottom left end of the connecting rod 204, and a columnar hole 209 is opened on the top surface of the limiting sleeve 201 facing downward. The limiting post 205 is located in the columnar hole 209 and is used to limit the rotation of the connecting rod 204 on the limiting sleeve 201.

[0033] Reference Figure 3 As shown, in an optional embodiment, the top surface of the nut 203 is provided with an inner rotating ring 208, which is rotatably connected inside the bottom end of the limiting sleeve 201, and is used to restrict the nut 203 to rotate only at the bottom end of the limiting sleeve 201.

[0034] Reference Figure 2 and Figure 3 As shown, in an optional embodiment, the limiting sleeve 201 is set as a hollow cylinder, the stud 202 passes through the limiting sleeve 201 and the nut 203, and the left end of the telescopic rod 2 is provided with connecting ears 207 on both sides to fix the position of the telescopic rod 2. The arc-shaped outer surfaces of the nut 203 and the bolt 102 are roughened to facilitate rotation.

[0035] Furthermore, it should be noted that, referring to Figure 1 As shown, the lower glue hopper 1 includes an upper inverted cone head and a lower through pipe. The top of the hose 101 is located at the bottom inside the upper inverted cone head of the lower glue hopper 1. The top of the hose 101 is set in an inverted cone shape to prevent the hose 101 from detaching from the upper inverted cone head of the lower glue hopper 1.

[0036] This device, through the arrangement and cooperation of the glue hopper 1, the flexible tube 101, and the needle 3, utilizes the sharp end of the needle 3 to extend into the gap between the optical film 5 and the roller 4, greatly reducing the impact of UV glue dripping onto the optical film 5. Furthermore, as the sharp end of the needle 3 extends into the accumulation area of ​​UV glue, it avoids the ripples caused by UV glue dripping from above the accumulation area, thereby reducing or preventing the formation of transverse stripes on the optical film 5, resulting in better glue coating effect on the optical film 5. The structure is simple, efficient, and suitable for widespread use.

[0037] This device, through the coordinated setup of a telescopic mechanism and an adjustment mechanism, utilizes the rotation of nut 203 to adjust the height of the annular sleeve 206 fitted with the lower glue hopper 1, thereby more precisely inserting the sharp end of the needle 3 into the gap between the roller 4 and the optical film 5. The rotation of bolt 102 adjusts the degree of compression of the tubing 101, thus conveniently and efficiently adjusting the flow rate of UV glue to adapt to different production needs. This greatly improves the flexibility of the device, and its simple and efficient structure makes it suitable for widespread use.

[0038] The working principle of this device will now be explained through its usage: (Refer to...) Figure 6 As shown, the telescopic rod 2 is fixed to the UV coating machine using bolts and connecting lugs 207, which are existing technologies. The UV coating machine includes three rollers 4, and the optical film 5 passes around these three rollers 4. This is existing technology and will not be described in detail here. The telescopic rod 2 is stretched so that the lower glue hopper 1 is positioned between the first roller 4 and the second roller 4 from left to right. Then, the nut 203 is rotated. Since the nut 203 is threadedly connected to the stud 202, and the limiting post 205 is located in the columnar hole 209, it restricts the rotation of the connecting rod 204. This controls and adjusts the height of the annular sleeve 206 fixedly connected to the connecting rod 204, so that the needle 3 approaches the optical film 5. At this time, UV glue is poured into the glue container 1. Under the action of gravity, the UV glue enters the needle 3 through the tube 101 and drips onto the optical film 5. Due to the design of the needle 3, the sharp end of the needle 3 can extend into the gap between the optical film 5 and the second roller 4, thereby reducing the impact of the UV glue dripping onto the optical film 5. After the UV glue accumulates to form an accumulation area, the sharp end of the needle 3 extends into the accumulation area, avoiding the impact of the ripples formed by the UV glue dripping into the accumulation area from above on the optical film 5. This reduces and avoids the formation of transverse stripes on the optical film 5, thus significantly improving the glue coating quality of the optical film 5 by this device.

[0039] During the above operation, when the rolling speed of roller 4 changes, the consumption of UV adhesive by optical film 5 becomes faster or slower, that is, when the flow rate of UV adhesive in this device changes, the operator only needs to rotate bolt 102 to control the length of its extension into the lower glue hopper 1, thereby controlling the degree of compression of hose 101, and thus controlling the flow rate of UV adhesive discharged from needle 3. This makes the device more flexible and can control the adhesive coating speed of optical film 5 according to production requirements. The structure is simple, the operation is convenient, and it is suitable for widespread application.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coating and dispensing device comprising a glue hopper (1) for containing glue, characterized in that: The lower glue hopper (1) is provided with a flexible tube (101) inside, a needle (3) is provided at the bottom end of the lower glue hopper (1), a telescopic mechanism is provided on the outer side of the lower glue hopper (1), and an adjustment mechanism is provided at the bottom of the lower glue hopper (1). The telescopic mechanism is used to adjust the height of the lower glue hopper (1); The adjustment mechanism includes a bolt (102) threaded to the lower side wall of the lower glue hopper (1). The length of the bolt (102) extending into the lower part of the lower glue hopper (1) is controlled by rotating the bolt (102). The position of the bolt (102) on the lower glue hopper (1) is higher than the bottom end of the hose (101). The longer the bolt (102) extends into the lower part of the lower glue hopper (1), the narrower the hose (101) is squeezed, so as to control the flow rate of glue discharged through the hose (101).

2. The coating and dispensing apparatus of claim 1, wherein: The telescopic mechanism includes a telescopic rod (2), with a limiting sleeve (201) at the end of the telescopic rod (2). A nut (203) is rotatably connected to the bottom end of the limiting sleeve (201), and the nut (203) is threadedly connected to the limiting sleeve (201). A connecting rod (204) is fixedly connected to the top end of the limiting sleeve (201), and a ring sleeve (206) is fixedly connected to the end of the connecting rod (204). The ring sleeve (206) is used to fit the lower glue hopper (1).

3. The coating and adhesive discharge device according to claim 2, characterized in that: The bottom left end of the connecting rod (204) is fixedly connected to a limiting post (205). The top surface of the limiting sleeve (201) is provided with a columnar hole (209). The limiting post (205) is located inside the columnar hole (209) and is used to restrict the connecting rod (204) from rotating on the limiting sleeve (201).

4. The coating and adhesive discharge device according to claim 3, characterized in that: The top surface of the nut (203) is provided with an inner rotating ring (208), which is located inside the bottom end of the limiting sleeve (201) and is rotatably connected to restrict the nut (203) to rotate only at the bottom end of the limiting sleeve (201).

5. The coating and adhesive discharge device according to claim 4, characterized in that: The limiting sleeve (201) is set as a hollow cylinder, and a stud is provided inside the limiting sleeve (201) and the nut (203) and the stud passes through the limiting sleeve (201) and the nut (203).

6. The coating and dispensing apparatus of claim 5, wherein: Connecting ears (207) are provided on both sides of the left end of the telescopic rod (2) to fix the position of the telescopic rod (2).

7. The coating and dispensing apparatus of claim 1, wherein: The lower glue hopper (1) includes an upper inverted cone head and a lower through pipe.

8. The coating and dispensing apparatus of claim 7, wherein: The top of the hose (101) is located at the bottom of the inner side of the upper inverted cone of the lower glue hopper (1).

9. The coating and dispensing apparatus of claim 8, wherein: The top of the hose (101) is set in an inverted cone shape to prevent the hose (101) from detaching from the upper inverted cone head of the lower glue hopper (1).

10. The coating and dispensing apparatus of claim 6, wherein: The outer arc-shaped surfaces of the nut (203) and bolt (102) are both roughened to facilitate rotation.

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