Film pressing mechanism
By introducing a downward swing rod and roller into the film output mechanism, the film end is pressed down with gravity, which solves the problem of film hovering and not falling, and the orderly output of film is achieved.
Patent Information
- Application Number
- CN202422529251.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-19
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-19
AI Technical Summary
During the output process, the film will not hover due to frictional force differences, resulting in the problem of confusion in film stacking.
A film downward pressing mechanism with a downward swing rod and a roller is used between the driving roller and the driven roller, and the end of the film is pressed down by gravity to ensure that it falls into the sheet pickup tray.
It effectively solves the problem of film hovering and not falling, avoids film bending and arching and stacking chaos, and achieves orderly film output.
Smart Images
Figure CN223239374U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of printing equipment, and particularly relates to a film pressing mechanism. Background Art
[0002] Medical film printers are essential imaging devices in the medical field, converting medical images into high-quality prints to facilitate diagnosis and treatment. Film, the printer's output medium, is typically stored in stacks of dozens to hundreds of sheets in a film supply cassette. After printing, the film is deposited onto a film tray through the film output port.
[0003] The film printer body is equipped with a film outlet and a film pickup tray. The film outlet outputs printed films. A driving roller and a driven roller are located between the film outlet and the film pickup tray. The driving roller and the driven roller are arranged in parallel. The driven roller is located above the driving roller and clamps the film. The driving roller is equipped with a drive wheel. The film printer body is equipped with a motor output wheel. The drive wheel and the motor output wheel are connected to each other. The driving roller and the driven roller establish a conveying platform between the film pickup tray and the film outlet, guiding the film from the film outlet and delivering it to the film pickup tray.
[0004] During the film output process, after most of the single film enters the film extraction tray, the film is separated from the pressing part of the active roller and the driven roller, and the active roller and the driven roller no longer provide effective driving force for the film. Since the friction between the film and the film extraction tray or the friction between the films is greater than the friction between the tail of the film and the active roller and the driven roller, the film slips at the active roller and does not fall completely into the film extraction tray, causing the film to hover and not fall. In addition, the head of the next film after it is output will press against the tail of the previous film, causing the film to bend and arch, thereby causing the film to be stacked chaotically in the film extraction box. Utility Model Content
[0005] In order to overcome the above-mentioned defects, the purpose of the present invention is to provide a film pressing mechanism.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A film pressing mechanism includes an active roller and a driven roller arranged on a side plate of a film outlet. The driven roller is rotatably connected to two pressing swing rods, a fixed rod is fixedly connected between the two pressing swing rods, and a roller is respectively arranged at the lower end of the facing sides of the two pressing swing rods.
[0008] Preferably, the downward-pressing rocker is arc-shaped, with the curved surface facing the active roller.
[0009] Preferably, the downward-pressing rocker is made of plastic.
[0010] The positive and beneficial effects of this utility model:
[0011] 1. During operation of the film pressing mechanism of the present invention, when no film exits the film outlet, the pressing lever and roller droop downward, positioned between the active roller and the driven roller. After film exits the film outlet, the active and driven rollers drive the film forward, lifting the roller and causing the pressing lever to rotate around the driven roller. As the film continues to exit the film outlet, after it separates from the active and driven rollers, the film tail and the active roller surface slip, causing the film to lose its forward momentum. At this point, the pressing lever and roller descend under gravity, pressing the film tail from the active roller and dropping it into the film extraction tray. This mechanism effectively solves the problem of film tails slipping and remaining suspended after exiting the film outlet. It also prevents the next film from bending and arching due to the tail of the previous film, which can cause the film to become chaotically stacked in the film extraction tray. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the printing device structure;
[0013] Figure 2 for Figure 1 A in the middle is an enlarged structural diagram;
[0014] Figure 3 This is one of the structural diagrams of the film pressing mechanism of the utility model;
[0015] Figure 4 This is the second structural diagram of the film pressing mechanism of the utility model;
[0016] Figure 5 This is the third structural diagram of the film pressing mechanism of the utility model;
[0017] Figure 6 This is the fourth structural diagram of the film pressing mechanism of the utility model;
[0018] In the figure: 1-active roller, 2-driven roller, 3-downward pressure swing arm, 4-roller, 5-film tray, 6-film, 7-fixing rod. DETAILED DESCRIPTION
[0019] The present invention will be further described below with reference to some specific embodiments.
[0020] See also Figure 1-6A film pressing mechanism includes an active roller 1 and a driven roller 2 arranged on the side plate of the film output port, a film taking tray 5 is arranged in front of the film output port, the active roller 1 and the driven roller 2 are located between the film output port and the film taking tray 5, the driven roller 2 is rotatably connected to two downward pressing rocker bars 3, and a fixed rod 7 is fixedly connected between the two downward pressing rocker bars 3 to keep the active roller 1 and the driven roller 2 rotating synchronously, and a roller 4 is respectively arranged at the lower end of the opposite sides of the two downward pressing rocker bars 3, and the roller 4 is rotatable and abuts against the surface of the film.
[0021] Furthermore, the downward-pressing rocker arm 3 is arc-shaped, with the curved surface facing the active roller 1 , so as to facilitate contact with the film surface.
[0022] Furthermore, the downward-pressing rocker 3 is made of plastic, which is low in cost and easy to shape.
[0023] The method of using the film pressing mechanism of this utility model is as follows: Figure 3 When no film comes out of the film outlet, the downward pressure swing rod 3 and the roller 4 droop, and the downward pressure swing rod 3 and the roller 4 are located between the active roller and the driven roller; see Figure 4 When the film 6 comes out of the film outlet, the active roller 1 and the driven roller 2 drive the film to move forward, and the film lifts the roller 4, pressing the swing rod 3 to rotate around the driven roller 2; see Figure 5 , the film 6 continues to be output from the film output port. When the film 6 is separated from the active roller 1 and the driven roller 2, the tail of the film 6 and the surface of the active roller 1 slip, and the film loses its forward momentum. Figure 6 At this time, the downward swing rod 3 and the roller 4 fall down by gravity, pressing the tail of the film 6 off the active roller 1, and the film falls into the film take-out tray 5.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.
Claims
1. A film pressing mechanism, characterized in that: It comprises an active roller and a driven roller arranged on the side plate of the film output port. The driven roller is rotatably connected to two downward pressure swing rods, and the two downward pressure swing rods are fixedly connected to a fixed rod. A roller is respectively arranged at the lower end of the opposite side surfaces of the two downward pressure swing rods.
2. The film pressing mechanism according to claim 1, characterized in that: The downward pressure swing rod is arc-shaped, and the curved surface faces the active roller side.
3. The film pressing mechanism according to claim 1, characterized in that: The material of the downward-pressing rocker is plastic.