Dispensing and pressing device for silica gel pad in plastic cover

Abstract

The utility model belongs to plastic cover assembly technical field especially is a kind of plastic cover inner silica gel pad point gum pressure bonding device, including feeding mechanism, including first feeding mechanism and second feeding mechanism;Liquid coating mechanism is located above main conveying line, for identifying the plastic cover conveyed to this place and carries out liquid coating to the inside of plastic cover;Point gum mechanism is located above vice conveying line, for identifying the silica gel pad conveyed to this place and draws circular track glue on silica gel pad surface according to preset track;Pressure bonding assembly is located at the junction of main conveying line and vice conveying line, including pickup adsorption mechanism, for adsorbing and grabbing the side of silica gel pad without point gum;Turnover drive mechanism is connected with pickup adsorption mechanism, for driving silica gel pad overturn 180 to make the side of silica gel pad point gum overturn to the just above of plastic cover;Reciprocating drive mechanism is located between pickup adsorption mechanism and turnover drive mechanism, for pressing into plastic cover after the silica gel pad overturn, realizes the assembly of plastic cover and silica gel pad.

Description

Technical Field

[0001] This utility model belongs to the field of plastic cap assembly technology, specifically relating to a silicone pad dispensing and pressing device for plastic caps. Background Technology

[0002] Medical plastic bottle caps are key components in the aseptic packaging of pharmaceuticals, vaccines, and other products. Their assembly quality directly affects the product's shelf life, safety, and compliance. When assembling plastic caps, first apply quick-drying adhesive to the white side of the silicone pad, then apply liquid treatment to the inside of the plastic cap. After applying adhesive to the white side of the silicone pad, insert it into the plastic cap and press it together to complete the assembly of the plastic cap.

[0003] Traditional processes are inefficient. The loading, sorting, and positioning of plastic caps and silicone pads are usually done manually. Operators need to manually place the silicone pads into the plastic caps and then fix them by pressing or clamping to complete the assembly. This is labor-intensive and easily affected by factors such as operator skill and fatigue, resulting in low production efficiency (single machine capacity is usually ≤800 pieces / hour). Labor costs account for a high proportion (about 30%-40% of the total production cost), and the coordination of processes is poor. Processes such as coating, dispensing, and pressing operate independently, and the flow of materials between processes depends on manual or simple mechanical transmission. The lack of automated coordination leads to mismatch in production rhythm and low equipment utilization. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide a silicone pad dispensing and pressing device for plastic covers, thereby solving the problems mentioned in the background art.

[0005] This utility model provides a silicone pad dispensing and pressing device for plastic caps, including a feeding mechanism, comprising a first feeding mechanism and a second feeding mechanism. The first feeding mechanism is used to automatically sort and convey plastic caps to a main conveyor line; the second feeding mechanism is used to automatically sort and convey silicone pads to a secondary conveyor line located above the main conveyor line; a coating mechanism, located above the main conveyor line, is used to identify the plastic caps conveyed there and apply coating to the inside of the plastic caps; a dispensing mechanism, located above the secondary conveyor line, is used to identify the silicone pads conveyed there and draw a circular trajectory of adhesive on the surface of the silicone pads according to a preset trajectory; a pressing assembly, located at the junction of the main conveyor line and the secondary conveyor line, includes a pickup and adsorption mechanism for picking up and gripping the un-dispensed side of the silicone pad; a flipping drive mechanism, connected to the pickup and adsorption mechanism, is used to drive the silicone pad to flip 180° so that the dispensed side of the silicone pad is flipped to the top of the plastic cap; a reciprocating drive mechanism, located between the pickup and adsorption mechanism and the flipping drive mechanism, is used to press the flipped silicone pad into the plastic cap, realizing the assembly of the plastic cap and the silicone pad.

[0006] Preferably, the pickup and adsorption mechanism includes a vacuum suction cup adapted to the size of the silicone pad for adsorbing the un-adhesive side of the silicone pad; and a position sensor located in the central groove of the vacuum suction cup for detecting whether the silicone pad has been delivered to the adsorption position of the vacuum suction cup.

[0007] Preferably, the flipping drive mechanism includes a stepper motor for driving the silicone pad to flip 180°; and an angle sensor for monitoring the flipping angle in real time and feeding it back to the control system.

[0008] Preferably, the coating mechanism includes a visual recognition unit for identifying the model and location of the plastic cap; a coating execution unit including a nozzle, a storage tank connected to the nozzle via a hose, and a delivery pump installed at the connection between the hose and the storage tank for uniformly coating the inside of the plastic cap; and a control unit for dynamically adjusting the coating amount according to the specifications of the plastic cap.

[0009] Preferably, the dispensing mechanism includes a vision positioning unit for identifying the model and location of the silicone pad; a dispensing execution system including a dispensing head and a servo motor for driving the dispensing head to move along a circular path; a motion controller for generating pulse signals for the circular trajectory and synchronizing the timing of the actions of the servo motor and the dispensing valve; and a dispensing valve for controlling and adjusting the amount of adhesive according to the motion controller signal.

[0010] Preferably, the reciprocating drive mechanism is an electric telescopic rod, a pneumatic cylinder, or a hydraulic cylinder.

[0011] Preferably, it also includes positioning components, of which two sets are provided. The two sets of positioning components are respectively installed at the dispensing mechanism and the coating mechanism, including a positioning frame with a retaining ring in the middle for limiting the plastic cap or silicone pad; a power component, the output shaft of which is connected to the tail end of the positioning frame for driving the positioning frame to rotate; and a drive controller, which is connected to the vision recognition unit or the vision positioning unit for driving the operation of the power component according to the position signals of the plastic cap and the silicone pad identified by the vision recognition unit and the vision positioning unit.

[0012] The beneficial effects of this utility model are: by innovatively integrating the feeding mechanism, the coating mechanism, the dispensing mechanism and the pressing component, and introducing visual recognition, servo drive and closed-loop control technology, the following technological breakthroughs are achieved;

[0013] Dual feeding mechanisms work together: The first feeding mechanism automatically sorts the plastic caps and conveys them to the main conveyor line, while the second feeding mechanism accurately conveys the silicone pads to the auxiliary conveyor line to avoid mixing. The main conveyor line and the auxiliary conveyor line run in parallel to reduce material waiting time.

[0014] Dynamic liquid coating and precise dispensing: The liquid coating mechanism visually identifies the plastic cap model and dynamically adjusts the liquid coating amount (accuracy ±0.01mL), while the dispensing mechanism draws the glue path on the silicone pad surface according to a preset circular trajectory (deviation ≤0.05mm) to ensure uniform glue distribution;

[0015] Integrated flipping and pressing: The picking and adsorption mechanism precisely grasps the silicone pad through a vacuum suction cup, and the stepper motor drives it to flip 180° so that the adhesive surface is facing upward. The reciprocating drive mechanism smoothly presses it into the plastic cover, avoiding wrinkles or displacement.

[0016] Closed-loop control throughout the entire process: Real-time feedback of the status of each link is achieved through position sensors, angle sensors and vision positioning units, combined with dynamic parameter adjustment by motion controllers, to achieve stable production with high precision (positioning deviation ≤0.05mm) and high efficiency (≥60 pieces / minute). Attached Figure Description

[0017] Figure 1 This is a first side view of the three-dimensional structure of the present invention;

[0018] Figure 2 This is a second side view of the three-dimensional structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the first side cross-sectional structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the second side cross-sectional structure of the present invention;

[0021] Figure 5 This is an enlarged structural diagram of point A in this utility model;

[0022] Figure 6 This is a schematic diagram of the third side cross-sectional structure of the present invention;

[0023] Figure 7 This is an enlarged structural diagram of point B in this utility model;

[0024] Figure 8 This is a schematic diagram of the assembled structure of the plastic cover and silicone pad in this utility model.

[0025] In the diagram: 1. First feeding mechanism; 2. Second feeding mechanism; 3. Main conveyor line; 4. Auxiliary conveyor line; 5. Coating mechanism; 6. Dispensing mechanism; 7. Pick-up and adsorption mechanism; 8. Tilting drive mechanism; 9. Reciprocating drive mechanism; 10. Plastic cover; 11. Silicone pad; 12. Vacuum suction cup; 13. Position sensor; 14. Stepper motor; 15. Vision recognition unit; 16. Nozzle; 17. Liquid storage tank; 18. Infusion pump; 19. Vision positioning unit; 20. Dispensing head; 21. Positioning frame; 22. Snap ring; 23. Power component. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0027] like Figure 1-8 As shown, a silicone pad dispensing and pressing device for a plastic cap, through a modularly designed feeding mechanism, a coating mechanism 5, a dispensing mechanism 6, and a pressing assembly, realizes a fully automated production line operation from feeding the plastic cap 10 to pressing the silicone pad 11. The feeding mechanism includes a first feeding mechanism 1 and a second feeding mechanism 2. The first feeding mechanism 1 is used to automatically sort the plastic caps 10 and convey them to the main conveyor line 3; the second feeding mechanism 2 is used to automatically sort the silicone pads 11 and convey them to the auxiliary conveyor line 4 located above the main conveyor line 3 (the conveyor line can be a conveyor belt). The first feeding mechanism 1 and the second feeding mechanism 2 use a vibratory feeder to feed the plastic caps 10 and silicone pads 11. When the plastic caps 10 and silicone pads 11 are respectively on the main conveyor line 3 and the auxiliary conveyor line 4, in order to ensure that the surfaces to be processed of the plastic caps 10 and silicone pads 11 are facing upwards, the plastic caps 10 or silicone pads 11 can be manually flipped by the worker. The coating mechanism is located above the main conveyor line 3. It is used to identify the plastic cap 10 delivered there and apply the coating liquid to the inside of the plastic cap 10. The coating mechanism specifically includes a vision recognition unit 15 for identifying the model and location of the plastic cap 10, such as a CCB camera, a coating execution unit and a control unit consisting of a nozzle 16, a liquid storage tank 17 connected to the nozzle 16 via a hose, and a delivery pump 18 installed at the connection between the hose and the liquid storage tank 17. When the CCB camera identifies that the plastic cap 10 has been delivered to the nozzle 16, the control system controls the delivery pump 18 to start, and delivers the coating liquid in the liquid storage tank 17 to the nozzle 16 via the hose to coat the inside of the plastic cap 10. At the same time, the amount of coating liquid applied to the inside of the plastic cap 10 is controlled according to the model of the plastic cap 10 identified by the CCB. In addition, the dispensing mechanism 6 is used to dispense adhesive onto the surface of the silicone pad 11. It mainly includes a vision positioning unit 19 for identifying the model and position of the silicone pad 11. Alternatively, it can employ a CCB camera, a dispensing execution unit consisting of a dispensing head 20 and a servo motor. The servo motor drives the dispensing head 20 to move along a circular path, a motion controller generates pulse signals for the circular trajectory, and a dispensing valve controls the amount of adhesive based on the motion controller signal. The motion controller synchronously coordinates the operation of the servo motor and the dispensing valve according to the model and position of the silicone pad 11 identified by the CCB camera, dispensing adhesive along a circular trajectory onto the upward-facing side of the silicone pad 11. After the plastic cap 10 is coated with liquid, it is conveyed to the pressing area via the main conveyor line 3. Figure 4As shown, the pressing table at the end of the main conveyor line 3 is equipped with a U-shaped limiting frame for limiting and positioning the plastic cover 10. Simultaneously, the silicone pad 11, after being coated with adhesive, is also conveyed to the pressing point via the auxiliary conveyor line 4. This pressing point is located at the end of the auxiliary conveyor line 4 and directly above the plastic cover 10. The pressing assembly is located at this pressing point and mainly includes a pick-up and adsorption mechanism 7 for adsorbing and gripping the uncoated side of the silicone pad 11; a flipping drive mechanism 8 connected to the pick-up and adsorption mechanism 7 for driving the silicone pad 11 to rotate 180° so that the coated side of the silicone pad 11 is directly above the plastic cover 10; and a mechanism located between the pick-up and adsorption mechanism 7 for pressing the flipped silicone pad 11 into the plastic cover 10. The reciprocating drive mechanism 9 includes, specifically, a pickup and adsorption mechanism 7 comprising a vacuum suction cup 12, which is adapted to the size of the silicone pad 11 and connected to a vacuum generator via a flexible pipe. The vacuum generator generates negative pressure to adsorb the silicone pad 11. A position sensor 13 is also installed in the central groove of the vacuum suction cup 12 to detect whether the silicone pad 11 has been delivered to the adsorption position of the vacuum suction cup 12. Secondly, the flipping drive mechanism 8 includes a stepper motor 14 mounted at the pressing point to drive the silicone pad 11 to flip 180°, and an angle sensor mounted on the output shaft of the stepper motor 14 to monitor the flipping angle in real time and feed it back to the control system. Finally, the reciprocating drive mechanism 9 includes, but is not limited to, an electric... Telescopic rods, cylinders, or hydraulic cylinders can be used, or other mechanisms such as combinations of motors and lead screws can be employed, as long as reciprocating motion can be achieved. In specific use, when the position sensor 13 (commonly a photoelectric sensor, which works by emitting LED infrared light or laser light from the transmitter and detecting whether the light is blocked by the silicone pad 11 to determine if the silicone pad 11 has reached the target position) identifies that the silicone pad 11 has reached the adsorption position of the vacuum suction cup 12, the plastic cover 10 also reaches the U-shaped limit frame. The control system activates the vacuum generator to create negative pressure inside the vacuum suction cup 12 to adsorb the un-adhesive side of the silicone pad 11. Simultaneously, the stepper motor 14 drives the vacuum suction cup 12, the silicone pad 11, and the reciprocating motion... The drive mechanism 9 rotates 180 degrees to the side closest to the main conveyor line 3, so that the adhesive side of the silicone pad 11 is directly above the plastic cover 10. The reciprocating drive mechanism 9 drives the vacuum suction cup 12 and the silicone pad 11 to move into the plastic cover 10 until the silicone pad 11 is pressed into the plastic cover 10. In order to accurately control the downward movement distance of the silicone pad 11, the distance between the silicone pad 11 and the plastic cover 10 after the silicone pad 11 is rotated is measured in advance. This allows the reciprocating drive mechanism 9 to move a distance that matches the silicone pad 11, so that the silicone pad 11 can be pressed into the plastic cover 10 without being damaged by excessive pressure. After the plastic cover 10 and the silicone pad 11 are assembled, the worker can send them to the next work station.

[0028] Furthermore, such as Figure 7As shown, to avoid positional deviations in the coating / dispensing mechanism caused by transport offset, positioning components are provided at both the coating mechanism 5 and the dispensing mechanism 6. Each positioning component includes a positioning frame 21 with a retaining ring 22 in its center for limiting the position of the plastic cap 10 or the silicone pad 11. The retaining ring 22 at the coating mechanism 5 is sized to match the plastic cap 10, and the retaining ring 22 at the dispensing mechanism 6 is sized to match the silicone pad 11. It also includes a power component 23, whose output shaft is connected to the tail end of the positioning frame 21 for driving the positioning frame 21 to rotate. It is also connected to a vision positioning unit 19 and a vision recognition unit 15 or vision positioning unit 19, serving as a drive controller for driving the power component 23 based on the position signals of the plastic cap 10 and the silicone pad 11 identified by the vision recognition unit 15 and vision positioning unit 19. For example, when the vision positioning unit 19 in the coating mechanism 5 detects that the plastic cap 10 has reached the nozzle 16, the drive controller controls the power component 23 (servo motor or stepper motor 14) to rotate, driving the positioning frame 21 to flip towards the middle of the main conveyor line 3 until the positioning frame 21 is in contact with the surface of the main conveyor line 3 and is stuck on the outside of the plastic cap 10, limiting the plastic cap 10 to improve the accuracy of coating. After the coating is completed, the power component 23 drives the positioning frame 21 to reset. In addition, in order to optimize the conveying path of the plastic cap 10 and the silicone pad 11, a near-Y-shaped channel 24 is installed at the main conveyor line and the auxiliary conveyor line, which consists of two baffles 25, to reduce the conveying range of the plastic cap 10 and the silicone pad 11 and to better guide the plastic cap 10 and the silicone pad 11 to the coating mechanism 5 and the dispensing mechanism 6.

[0029] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of this utility model. The above examples are merely to aid in understanding the method and core ideas of this utility model. The above descriptions are only preferred embodiments of this utility model. It should be pointed out that, due to the limitations of written expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or variations can be made without departing from the principles of this utility model, and the above technical features can be combined in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this utility model.

Claims

1. A device for dispensing and pressing silicone pads inside a plastic cap, characterized in that, include: The feeding mechanism includes a first feeding mechanism (1) and a second feeding mechanism (2). The first feeding mechanism (1) is used to automatically sort and convey plastic caps (10) to the main conveyor line (3); the second feeding mechanism (2) is used to automatically sort and convey silicone pads (11) to the auxiliary conveyor line (4) located above the main conveyor line (3). The coating mechanism (5), located above the main conveyor line (3), is used to identify the plastic cap (10) conveyed to the main conveyor line (3) and to coat the inside of the plastic cap (10) with liquid. The dispensing mechanism (6) is located above the auxiliary conveyor line (4) and is used to identify the silicone pad (11) conveyed to the main conveyor line (3) and to draw a circular trajectory on the surface of the silicone pad (11) according to a preset trajectory. The glue cover (10) is used to apply liquid to the inside of the plastic cover (10). The pressing assembly, located at the junction of the main conveyor line (3) and the auxiliary conveyor line (4), includes: The picking and adsorption mechanism (7) is used to adsorb and grasp the un-adhesive side of the silicone pad (11); The flipping drive mechanism (8) is connected to the pick-up and adsorption mechanism (7) to drive the silicone pad (11) to flip 180° so that the side of the silicone pad (11) with adhesive is flipped to the top of the plastic cover (10). The reciprocating drive mechanism (9) is located between the pick-up and adsorption mechanism (7) and the flipping drive mechanism (8). It is used to press the flipped silicone pad (11) into the plastic cover (10) to realize the assembly of the plastic cover (10) and the silicone pad (11).

2. The silicone pad dispensing and pressing device for a plastic cap according to claim 1, characterized in that: The pickup and adsorption mechanism (7) includes: A vacuum suction cup (12) is adapted to the size of a silicone pad (11) and is used to adsorb the un-adhesive side of the silicone pad (11); A position sensor (13) is set in the middle inner groove of the vacuum suction cup (12) to detect whether the silicone pad (11) is delivered to the adsorption position of the vacuum suction cup (12).

3. The silicone pad dispensing and pressing device for a plastic cap according to claim 1, characterized in that: The flipping drive mechanism (8) includes: A stepper motor (14) is used to drive the silicone pad (11) to rotate 180°; An angle sensor is used to monitor the flip angle in real time and feed it back to the control system.

4. The silicone pad dispensing and pressing device for a plastic cap according to claim 1, characterized in that: The coating mechanism (5) includes: A visual recognition unit (15) is used to identify the model and location of the plastic cap (10); The liquid coating execution unit includes a nozzle (16), a liquid storage tank (17) connected to the nozzle (16) via a hose, and a liquid pump (18) installed at the connection between the hose and the liquid storage tank (17), for uniformly coating the inside of the plastic cap (10); The control unit is used to dynamically adjust the amount of coating liquid according to the specifications of the plastic cap (10).

5. The silicone pad dispensing and pressing device for a plastic cap according to claim 1, characterized in that: The dispensing mechanism (6) includes: A visual positioning unit (19) is used to identify the model and location of the silicone pad (11); The dispensing execution system includes a dispensing head (20) and a servo motor that drives the dispensing head (20) to move along a circular path; Motion controller, used to generate pulse signals for circular trajectories, synchronizing the timing of the actions of the servo motor and the dispensing valve; The dispensing valve is used to control and adjust the amount of adhesive dispensed based on signals from the motion controller.

6. The silicone pad dispensing and pressing device for a plastic cover according to claim 1, characterized in that: The reciprocating drive mechanism (9) is an electric telescopic rod, a pneumatic cylinder, or a hydraulic cylinder.

7. The silicone pad dispensing and pressing device for a plastic cap according to claim 1, characterized in that: It also includes positioning components, of which two sets are provided. The two sets of positioning components are respectively installed at the dispensing mechanism (6) and the coating mechanism (5), including; The positioning frame (21) has a retaining ring (22) in the middle for limiting the plastic cover (10) or silicone pad (11). The power component (23) has its output shaft connected to the tail end of the positioning frame (21) and is used to drive the positioning frame (21) to rotate; The drive controller, connected to the vision recognition unit (15) or the vision positioning unit (19), is used to drive the operation of the power unit (23) based on the position signals of the plastic cover (10) and the silicone pad (11) identified by the vision recognition unit (15) and the vision positioning unit (19).

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