A trimming device for plastic blister packaging

Abstract

This utility model discloses a trimming device for plastic blister packaging, belonging to the field of blister packaging trimming technology. It includes a cutting table with a cutting frame mounted on it. Mounting plates are mounted at both ends of the cutting frame. A cutting blade is mounted on one side of each mounting plate, and multiple sets of connecting frames are mounted on the other side. Guide rods slide through the interior of each set of connecting frames, with an adjusting plate connected to one end of each guide rod. A screw thread passes through the interior of each set of connecting frames. This trimming device improves applicability by adjusting the distance between the pressing plate and the cutting blade. It utilizes the spring force to pre-press and flatten warped edges with the pressing plate, reducing tearing or cutting path deviation caused by edge warping. Simultaneously, the pressing plate adaptively retracts into the adjusting plate via a spring, avoiding obstruction of the cutting blade's movement. The dynamic retraction of the spring enhances the holding force, further improving the edge holding effect.

Description

Technical Field

[0001] This utility model specifically relates to a trimming device for plastic blister packaging, belonging to the field of blister packaging trimming technology. Background Technology

[0002] Vacuum forming packaging is a type of packaging material made through a vacuum forming process. It is widely used in industries such as food, pharmaceuticals, and electronics. The edge trimming device used in vacuum forming is a piece of equipment used to cut and trim the edges of plastic packaging to ensure that the edges of the finished product are clean and smooth, thereby improving its overall quality and user experience.

[0003] Currently, when trimming packaging plastics, due to factors such as temperature fluctuations, uneven material thickness, and inaccurate vacuum extraction during the early forming process, some thermoforming materials may experience edge lifting. This can lead to tearing during the cutting process due to uneven force, or cause the cutting path to deviate from the predetermined trajectory, thereby affecting product quality and consistency. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a trimming device for plastic blister packaging; it includes a cutting table, on which a cutting frame is mounted, and mounting plates are mounted at both ends of the cutting frame. A cutting blade is mounted on one side of the mounting plate, and multiple sets of connecting frames are mounted on the other side of the mounting plate. Guide rods slide through the multiple sets of connecting frames, and an adjusting plate is connected to one end of the guide rod. A screw is threaded through the inside of one set of connecting frames, and the other end of the screw is rotatably connected to the adjusting plate. A pressing plate slides through the inside of the adjusting plate, and a spring is provided between the pressing plate and the adjusting plate.

[0005] A support frame is installed on the edge of the cutting table. An air blowing pipe is installed at one end of the support frame. Multiple sets of inclined nozzles are connected to one side of the air blowing pipe. An air inlet pipe is connected to the middle of the air blowing pipe, and a flange is provided at one end of the air inlet pipe. A solenoid valve is provided in the middle of the air inlet pipe.

[0006] A pressure plate is fixedly provided on one side of the outer wall of the air blowing pipe. A pressure switch is installed on the mounting plate, which is perpendicular to the pressure plate. The pressure switch is connected to the solenoid valve via a signal connection.

[0007] An installation slot is provided at the center of the cutting table, and an infrared monitor is installed inside the installation slot.

[0008] A rotating shaft is rotatably mounted on one corner of the edge of the cutting table. A cleaning rod is provided on the rotating shaft. A servo motor connected to the rotating shaft is mounted on the cutting table. The servo motor is connected to an infrared monitor signal.

[0009] The bottom of the cutting table is provided with a rubber pad, and the rubber pad has the same shape as the bottom of the cutting table. Beneficial effects

[0010] By adjusting the distance between the pressure plate and the cutting blade, the applicability of the device is improved. The elasticity of the spring is used in conjunction with the pressure plate to pre-press and flatten the warped edge, reducing tearing or cutting path deviation caused by edge warping. At the same time, the pressure plate retracts into the adjustment plate through the spring to avoid obstructing the movement of the cutting blade. The dynamic retraction of the spring also enhances the holding force, further improving the edge holding effect. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the support frame structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the adjusting plate structure of this utility model;

[0014] Figure 4 This is a schematic diagram of the rotating shaft structure of this utility model.

[0015] In the diagram: 1. Cutting table; 2. Cutting frame; 3. Mounting plate; 4. Cutting blade; 5. Connecting frame; 6. Guide rod; 7. Adjusting plate; 8. Screw; 9. Edge pressing plate; 10. Spring; 11. Support frame; 12. Air blowing pipe; 13. Nozzle; 14. Touch plate; 15. Touch switch; 16. Mounting slot; 17. Infrared monitor; 18. Rotating shaft; 19. Cleaning rod; 20. Servo motor. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-4As shown, a trimming device for plastic blister packaging includes a cutting table 1, a cutting frame 2 mounted on the cutting table 1, mounting plates 3 mounted at both ends of the cutting frame 2, a cutting blade 4 mounted on one side of the mounting plate 3, and multiple sets of connecting frames 5 mounted on the other side of the mounting plate 3. Guide rods 6 slide through the multiple sets of connecting frames 5, with one end of the guide rod 6 connected to an adjusting plate 7. A screw 8 is threaded through the inside of one set of connecting frames 5, with the other end of the screw 8 rotatably connected to the adjusting plate 7. A pressing plate 9 slides through the adjusting plate 7, and a spring 10 is provided between the pressing plate 9 and the adjusting plate 7. During operation, the cutting frame 2 is equipped with a linear drive mechanism such as an electric push rod to drive the cutting blade 4 to move up and down for cutting. By placing the plastic packaging on the cutting table 1, and adjusting the position of the adjusting plate 7 according to the edge arrangement of the plastic packaging to be trimmed, the distance between the pressing plate 9 and the cutting blade 4 is adjusted by adjusting the position of the adjusting plate 7 via the screw 8. To ensure that the edge-pressing plate 9 can effectively hold the edge area of ​​the packaging, the cutting frame 2 is then activated, which moves the mounting plate 3 and the cutting blade 4 downward to cut the plastic of the blister packaging. During this process, before the cutting blade 4 contacts the edge of the plastic of the blister packaging, the edge-pressing plate 9 will first contact the edge of the plastic of the blister packaging. Through the elastic force of the spring 10, the edge-pressing plate 9 flattens the raised edge, so that the cutting blade 4 faces a flat edge. Then the cutting blade 4 continues to press down and cut along the predetermined trajectory, reducing tearing or deviation of the cutting path caused by the raised edge. At the same time, when the cutting blade 4 presses down, the edge-pressing plate 9 is adaptively retracted and adjusted inside the adjusting plate 7 through the spring 10 to avoid obstructing the movement of the cutting blade 4. As the edge-pressing plate 9 retracts, the elasticity of the compressed spring 10 increases, thereby increasing the elastic holding force of the edge-pressing plate 9 on the edge of the packaging, further improving the edge-pressing effect.

[0018] Furthermore, a support frame 11 is installed on the edge of the cutting table 1. An air blowing pipe 12 is installed at one end of the support frame 11. Multiple sets of inclined nozzles 13 are connected to one side of the air blowing pipe 12. An air inlet pipe is connected to the middle of the air blowing pipe 12, and a flange is provided at one end of the air inlet pipe. A solenoid valve is provided in the middle of the air inlet pipe. A pressure plate 14 is fixedly installed on one side of the outer wall of the air blowing pipe 12. A pressure switch 15 is installed on the mounting plate 3, which is perpendicular to the pressure plate 14. The pressure switch 15 is connected to the solenoid valve for signal transmission. During operation, the air inlet pipe is connected to the external air supply equipment. When the cutting operation is completed, the electric actuator drives the cutting frame 2 to lift the mounting plate 3 and the cutting blade 4. At this time, the mounting plate 3 moves the pressure plate 14 in sync with the lifting process, so that the pressure switch 15 contacts the pressure plate 14 and is triggered, and sends a signal to the solenoid valve to control the solenoid valve to open. This allows compressed air to enter the blowing pipe 12 through the air inlet pipe, and the airflow is sprayed out through multiple sets of inclined nozzles 13 to contact the cutting blade 4, taking away the heat on the cutting blade 4 and removing the attached plastic debris and dust, thus achieving cooling and cleaning.

[0019] Furthermore, a mounting slot 16 is provided at the center of the cutting table 1, and an infrared monitor 17 is installed inside the mounting slot 16. A rotating shaft 18 is rotatably mounted on one corner of the edge of the cutting table 1, and a cleaning rod 19 is provided on the rotating shaft 18. A servo motor 20 is installed on the cutting table 1 and is driven and connected to the rotating shaft 18. The servo motor 20 is connected to the infrared monitor 17 via signal. During operation, the infrared monitor 17 monitors the working area on the cutting table 1 in real time to detect whether there is any packaging plastic on the table surface. When the packaging plastic is removed from the cutting table 1, a signal is sent to the servo motor 20, and its output end drives the rotating shaft 18 to rotate 90 degrees and then rotate in the opposite direction to reset. This causes the rotating shaft 18 to drive the cleaning rod 19 to rotate and clean, sweeping away waste and dust on the cutting table 1.

[0020] Furthermore, a rubber pad is provided at the bottom of the cutting table 1. The rubber pad has the same shape as the bottom of the cutting table 1. The rubber pad is used to increase the friction between the bottom of the cutting table 1 and the table surface, thereby improving the stability of the device.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A trimming device for plastic blister packaging, comprising a cutting table (1), characterized in that: A cutting frame (2) is installed on the cutting table (1). Mounting plates (3) are installed at both ends of the cutting frame (2). A cutting blade (4) is installed on one side of the mounting plate (3), and multiple sets of connecting frames (5) are installed on the other side of the mounting plate (3). A guide rod (6) slides through the multiple sets of connecting frames (5). An adjusting plate (7) is connected to one end of the guide rod (6). A screw (8) is threaded through the inside of one set of connecting frames (5). The other end of the screw (8) is rotatably connected to the adjusting plate (7). A pressure plate (9) slides through the inside of the adjusting plate (7). A spring (10) is provided between the pressure plate (9) and the adjusting plate (7).

2. The trimming device for plastic blister packaging as described in claim 1, characterized in that: The cutting table (1) is equipped with a support frame (11) on its edge. One end of the support frame (11) is equipped with an air blowing pipe (12). One side of the air blowing pipe (12) is connected to multiple sets of inclined nozzles (13). The middle of the air blowing pipe (12) is connected to an air inlet pipe, and one end of the air inlet pipe is equipped with a flange. The middle of the air inlet pipe is equipped with a solenoid valve.

3. The trimming device for plastic blister packaging as described in claim 2, characterized in that: A pressure plate (14) is fixedly provided on one side of the outer wall of the air blowing pipe (12). A pressure switch (15) is installed on the mounting plate (3) and is perpendicular to the pressure plate (14). The pressure switch (15) is connected to the solenoid valve for signal connection.

4. The trimming device for plastic blister packaging as described in claim 1, characterized in that: The cutting table (1) has a mounting groove (16) at its center, and an infrared monitor (17) is installed inside the mounting groove (16).

5. The trimming device for plastic blister packaging as described in claim 4, characterized in that: A rotating shaft (18) is rotatably mounted on one corner of the edge of the cutting table (1). A cleaning rod (19) is provided on the rotating shaft (18). A servo motor (20) is installed on the cutting table (1) and driven by the rotating shaft (18). The servo motor (20) is connected to the infrared monitor (17) for signal transmission.

6. The trimming device for plastic blister packaging as described in claim 1, characterized in that: The bottom of the cutting table (1) is provided with a rubber pad, and the rubber pad has the same shape as the bottom of the cutting table (1).

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