OCA (optical clear adhesive) coating device

Abstract

The utility model belongs to the field of coating devices, and particularly relates to an OCA (optical clear adhesive) coating device which comprises a conveying belt, a support is fixedly connected to the top of the conveying belt, an adhesive storage barrel is fixedly connected to the top of the support, a discharging port is fixedly connected to the bottom of the adhesive storage barrel, and the discharging port penetrates through the support and extends to the position below the support. The tail end of the discharging port is fixedly connected with a connecting hose, the tail end of the connecting hose is fixedly connected with a glue outlet pipe, a swing mechanism is arranged on the glue outlet pipe, and a barrel cover is detachably installed on the top of the glue storage barrel. According to the coating device, the rotating shaft driven by the motor to rotate is arranged in the glue storage barrel of the coating device, the rotating shaft is provided with the stirring rod and the anti-precipitation mechanism, and the scraping strip in the anti-precipitation mechanism can abut against the inner wall of the glue storage barrel under the action of the spring and synchronously rotate along with the motor, so that the scraping strip is matched with the stirring rod; the activity of the optical cement before glue discharging can be prevented, and solidification and precipitation are avoided.

Description

Technical Field

[0001] This utility model relates to the field of coating apparatus, specifically an OCA optical adhesive coating apparatus. Background Technology

[0002] OCA optical adhesive is one of the important raw materials for touch screens. It is made by making optical acrylic adhesive without a substrate, and then bonding a release film to the top and bottom layers. It is a double-sided adhesive tape without a substrate material and is the best adhesive for touch screens.

[0003] A search revealed a utility model patent with authorization announcement number CN219253097U, which discloses an OCA optical adhesive multilayer coating device. This device belongs to the field of optical adhesive coating technology and includes: a support base; a drive assembly, which includes a fixed housing fixedly connected to the support base, a motor fixedly connected to the side wall of the fixed housing via a bracket, and a reciprocating screw rotatably connected inside the fixed housing. The end of the reciprocating screw passes through the side wall of the fixed housing and is fixedly connected to the output end of the motor.

[0004] In existing OCA optical adhesive coating equipment, the substrate is transported via a conveyor belt, and then the adhesive is sprayed from top to bottom to form a single-layer film. This process is prone to incomplete coating, and the optical adhesive tends to solidify and settle during storage before coating, affecting normal dispensing. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide an OCA optical adhesive coating device, which solves the problem that existing OCA optical adhesive coating devices, when the substrate is transported by a conveyor belt and the adhesive is sprayed from top to bottom to form a single-layer adhesive film, are prone to spraying omissions. At the same time, it also solves the problem that the optical adhesive is prone to solidification and sedimentation during storage before coating, which affects the normal dispensing of adhesive.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an OCA optical adhesive coating device, comprising a conveyor belt, a support fixedly connected to the top of the conveyor belt, a glue storage tank fixedly connected to the top of the support, a discharge port fixedly connected to the bottom of the glue storage tank, the discharge port penetrating the support and extending to the bottom of the support, a connecting hose fixedly connected to the end of the discharge port, a glue dispensing pipe fixedly connected to the end of the connecting hose, a swinging mechanism provided on the glue dispensing pipe, a detachable lid detachably installed on the top of the glue storage tank, a motor fixedly installed on the upper end of the lid, an output shaft of the motor penetrating the lid and connected to the lid via a bearing, a rotating shaft fixedly connected to the end of the output shaft, and an anti-settling mechanism provided on the rotating shaft.

[0007] Preferably, a solenoid valve is provided on the discharge port. The solenoid valve can control the dispensing of adhesive from the adhesive storage tank.

[0008] Preferably, a stirring rod is fixedly connected to the upper section of the rotating shaft, and multiple stirring rods are provided. The stirring rods provide a stirring effect on the optical adhesive stored in the adhesive storage tank.

[0009] Preferably, the oscillating mechanism includes a connecting shaft fixedly connected to the end of the dispensing tube. The connecting shaft passes through the bracket and is connected to the bracket via a bearing. An incomplete gear is fixedly connected to the end of the connecting shaft. An electric push rod is fixedly mounted on the back of the bracket. A rack is fixedly connected to the end of the telescopic shaft of the electric push rod. The rack meshes with the incomplete gear. Multiple nozzles are fixedly connected to the bottom of the dispensing tube. Two scrapers are fixedly connected to the side of the dispensing tube, and the two scrapers are symmetrically arranged. By setting up the oscillating mechanism, the dispensing tube can be repeatedly oscillated to dispense glue.

[0010] Preferably, the anti-sedimentation mechanism includes a hollow sleeve fixedly connected to the lower section of the rotating shaft. A slide rod is slidably connected to the inner side of the hollow sleeve, and a scraper is fixedly connected to the end of the slide rod. The scraper contacts the inner wall of the glue storage tank, and a spring is provided on the inner side of the hollow sleeve. The anti-sedimentation mechanism prevents the optical adhesive stored in the glue storage tank from settling.

[0011] Preferably, one end of the spring is fixedly connected to the slide rod, and the other end of the spring is fixedly connected to the inner surface of the hollow sleeve. By using the spring, the elastic force can be applied to the slide rod.

[0012] Preferably, a second fixing ring is fixedly connected to the outer side of the slide rod, and a first fixing ring is fixedly connected to the outer side of the hollow sleeve. A protective rubber sleeve is fixedly connected between the first fixing ring and the second fixing ring. The protective rubber sleeve provides protection for the spring.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model provides a rotating shaft driven by an electric motor inside the glue storage tank of the coating device. The rotating shaft is equipped with not only a stirring rod but also an anti-settling mechanism. The scraper in the anti-settling mechanism will abut against the inner wall of the glue storage tank under the action of a spring and rotate synchronously with the electric motor. In conjunction with the stirring rod, this can prevent the optical glue from becoming active before it is dispensed, thus avoiding solidification and sedimentation.

[0015] 2. This utility model provides a swing mechanism on the glue dispensing tube. The repeated extension and retraction of the electric push rod causes the incomplete gear to swing left and right, which in turn causes the glue dispensing tube, which is on the same axis as the incomplete gear, to swing. This causes the glue dispensing tube to repeatedly apply glue to the same area, avoiding missed areas. Furthermore, during the glue application process, a scraper can be used to smooth the glue, further improving the glue application quality. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This is a partial structural diagram of coating 1 of this utility model;

[0018] Figure 3 For the present utility model Figure 1 A front sectional view;

[0019] Figure 4 For the present utility model Figure 3 A magnified view of the local structure.

[0020] In the diagram: 1. Conveyor belt; 2. Support frame; 3. Glue storage tank; 4. Discharge port; 41. Solenoid valve; 5. Connecting hose; 6. Glue discharge pipe; 7. Swinging mechanism; 8. Anti-sedimentation mechanism; 9. Tank lid; 10. Motor; 11. Rotating shaft; 12. Stirring rod; 71. Connecting shaft; 72. Incomplete gear; 73. Electric push rod; 74. Rack; 75. Scraper; 76. Nozzle; 81. Hollow sleeve; 82. Slide rod; 83. Scraper blade; 84. Spring; 85. Fixing ring one; 86. Fixing ring two; 87. Protective rubber sleeve. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4An OCA optical adhesive coating device includes a conveyor belt 1, a support 2 fixedly connected to the top of the conveyor belt 1, a glue storage tank 3 fixedly connected to the top of the support 2, a discharge port 4 fixedly connected to the bottom of the glue storage tank 3, the discharge port 4 penetrating the support 2 and extending below the support 2, and a solenoid valve 41 installed on the discharge port 4. The solenoid valve 41 controls the dispensing of glue from the glue storage tank 3. A connecting hose 5 is fixedly connected to the end of the discharge port 4, and a glue dispensing pipe 6 is fixedly connected to the end of the connecting hose 5. A detachable lid 9 is installed on the top of the glue storage tank 3, and a motor 10 is fixedly installed on the upper end of the lid 9. The output shaft of the motor 10 penetrates the lid 9 and is connected to the lid 9 via a bearing. A rotating shaft 11 is fixedly connected to the end of the output shaft, and multiple stirring rods 12 are fixedly connected to the upper section of the shaft of the rotating shaft 11. The stirring rods 12 provide a stirring effect on the optical adhesive stored in the glue storage tank 3.

[0023] Please see Figure 1-2 The dispensing tube 6 is equipped with a swing mechanism 7. The swing mechanism 7 allows the dispensing tube 6 to swing repeatedly to dispense glue. The swing mechanism 7 includes a connecting shaft 71 fixedly connected to the end of the dispensing tube 6. The connecting shaft 71 passes through the bracket 2 and is connected to the bracket 2 through a bearing. An incomplete gear 72 is fixedly connected to the end of the connecting shaft 71. An electric push rod 73 is fixedly installed on the back of the bracket 2. A rack 74 is fixedly connected to the end of the telescopic shaft of the electric push rod 73. The rack 74 meshes with the incomplete gear 72. Multiple nozzles 76 are fixedly connected to the bottom of the dispensing tube 6. Two scrapers 75 are fixedly connected to the side of the dispensing tube 6 and are symmetrically arranged between the two scrapers 75.

[0024] Please see Figure 4 An anti-settling mechanism 8 is provided on the rotating shaft 11. This mechanism prevents the optical adhesive stored in the adhesive storage tank 3 from settling. The anti-settling mechanism 8 includes a hollow sleeve 81 fixedly connected to the lower section of the rotating shaft 11. A slide rod 82 is slidably connected to the inner side of the hollow sleeve 81. A scraper 83 is fixedly connected to the end of the slide rod 82, and the scraper 83 contacts the inner wall of the adhesive storage tank 3. A spring 84 is provided inside the hollow sleeve 81. One end of the spring 84 is fixedly connected to the slide rod 82, and the other end is fixedly connected to the inner surface of the hollow sleeve 81. The spring 84 allows elastic force to be applied to the slide rod 82. A second fixing ring 86 is fixedly connected to the outer side of the slide rod 82, and a first fixing ring 85 is fixedly connected to the outer side of the hollow sleeve 81. A protective rubber sleeve 87 is fixedly connected between the first fixing ring 85 and the second fixing ring 86. The protective rubber sleeve 87 protects the spring 84.

[0025] The specific implementation process of this utility model is as follows: In use, the motor 10 first drives the rotating shaft 11 to rotate, and the rotating shaft 11 drives the stirring rod 12 and the anti-sedimentation mechanism 8 to rotate. The scraper 83 in the anti-sedimentation mechanism 8 will abut against the inner wall of the glue storage tank 3 under the action of the spring 84, and rotate synchronously with the motor 10. Then, in conjunction with the stirring rod 12, it can prevent the optical glue from becoming active before it is dispensed, and avoid solidification and sedimentation. When dispensing, the solenoid valve 41 is opened, and the optical glue enters the dispensing pipe 6 through the connecting hose 5, and is then sprayed out by the nozzle 76. At the same time, through the repeated extension and retraction of the electric push rod 73, the incomplete gear 72 swings left and right, which in turn causes the dispensing pipe 6, which is on the same axis as the incomplete gear 72, to swing, thereby driving the dispensing pipe 6 to repeatedly apply glue to the same area, avoiding missed application. Moreover, during the glue application process, it can be smoothed by the scraper 75, further improving the glue application quality.

[0026] 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. An OCA optical adhesive coating apparatus, comprising a conveyor belt (1), characterized in that: A support (2) is fixedly connected to the top of the conveyor belt (1), a glue storage tank (3) is fixedly connected to the top of the support (2), a discharge port (4) is fixedly connected to the bottom of the glue storage tank (3), the discharge port (4) passes through the support (2) and extends to the bottom of the support (2), a connecting hose (5) is fixedly connected to the end of the discharge port (4), a glue outlet pipe (6) is fixedly connected to the end of the connecting hose (5), a swing mechanism (7) is provided on the glue outlet pipe (6), a bucket cover (9) is detachably installed on the top of the glue storage tank (3), a motor (10) is fixedly installed on the upper end of the bucket cover (9), the output shaft of the motor (10) passes through the bucket cover (9) and is connected to the bucket cover (9) through a bearing, a rotating shaft (11) is fixedly connected to the end of the output shaft, and an anti-settling mechanism (8) is provided on the rotating shaft (11).

2. The OCA optical adhesive coating apparatus according to claim 1, characterized in that: A solenoid valve (41) is provided on the discharge port (4).

3. The OCA optical adhesive coating apparatus according to claim 1, characterized in that: The upper section of the shaft (11) is fixedly connected to a stirring rod (12), and the number of stirring rods (12) is set to multiple.

4. The OCA optical adhesive coating apparatus according to claim 1, characterized in that: The swing mechanism (7) includes a connecting shaft (71) fixedly connected to the end of the dispensing tube (6). The connecting shaft (71) passes through the bracket (2) and is connected to the bracket (2) through a bearing. An incomplete gear (72) is fixedly connected to the end of the connecting shaft (71). An electric push rod (73) is fixedly installed on the back of the bracket (2). A rack (74) is fixedly connected to the end of the telescopic shaft of the electric push rod (73). The rack (74) meshes with the incomplete gear (72). Multiple nozzles (76) are fixedly connected to the bottom of the dispensing tube (6). Two scrapers (75) are fixedly connected to the side of the dispensing tube (6), and the two scrapers (75) are symmetrically arranged.

5. The OCA optical adhesive coating apparatus according to claim 1, characterized in that: The anti-sedimentation mechanism (8) includes a hollow sleeve (81) fixedly connected to the lower section of the shaft (11). A slide rod (82) is slidably connected to the inner side of the hollow sleeve (81). A scraper (83) is fixedly connected to the end of the slide rod (82). The scraper (83) contacts the inner wall of the glue storage tank (3). A spring (84) is provided on the inner side of the hollow sleeve (81).

6. The OCA optical adhesive coating apparatus according to claim 5, characterized in that: One end of the spring (84) is fixedly connected to the slide rod (82), and the other end of the spring (84) is fixedly connected to the inner surface of the hollow sleeve (81).

7. An OCA optical adhesive coating apparatus according to claim 5, characterized in that: The outer side of the slide rod (82) is fixedly connected to a second fixing ring (86), and the outer side of the hollow sleeve (81) is fixedly connected to a first fixing ring (85). A protective rubber sleeve (87) is fixedly connected between the first fixing ring (85) and the second fixing ring (86).

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