A device for detecting exposed welding of a transfusion bag prevention interface
By using a reflective photoelectric sensor to detect the position of the co-extruded film on the infusion bag production line, the problem of inaccurate cutting by the film-separating knife was solved, ensuring the quality of the interface welding and improving the production efficiency and quality of infusion bags.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN KELUN PHARMA
- Filing Date
- 2025-09-19
- Publication Date
- 2026-07-31
AI Technical Summary
During the production of infusion bags, the slitting knife failed to accurately penetrate the designated position inside the co-extruded film, resulting in the co-extruded film not being divided into standard upper and lower layers, causing the welded joint to be exposed and affecting product quality.
The presence of the co-extruded film is detected by first and second reflective photoelectric sensors. The position of the co-extruded film is determined by the photoelectric sensors mounted on the detection hole and bracket. Combined with real-time monitoring by the controller, the film-separating knife accurately cuts the film and avoids exposed joint welding.
This enables timely detection and cleaning of co-extruded films, avoiding exposed joint welds and improving product quality.
Smart Images
Figure CN224576960U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of detection device technology, specifically to a detection device for preventing exposed welding of infusion bag interfaces. Background Technology
[0002] The large-volume parenteral soft bag filling and sealing equipment consists of 18 stations, including film supply, label printing, film stretching, peripheral welding and cutting, and bag output. At the film stretching station, a film separating knife is installed to separate the non-PVC co-extruded film into two layers. This facilitates the insertion of the infusion tube (also known as the interface) between the two co-extruded films for peripheral welding and cutting to form the bag. During production, the film separating knife has repeatedly failed to penetrate the designated position within the co-extruded film, resulting in the co-extruded film not being divided into standard upper and lower layers. Instead, the co-extruded film exists only above or below the separating knife, preventing the subsequent interface from being correctly inserted between the two layers. This leads to exposed welded parts, poor welding quality, and negatively impacts product quality. Utility Model Content
[0003] To address the problems existing in the prior art, the purpose of this utility model is to provide a detection device for preventing exposed welding of infusion bag interfaces. This device solves the problem that, in the production process, the separating blade does not penetrate to the designated position inside the co-extruded film, the co-extruded film is not divided into two standard upper and lower layers, and the co-extruded film only exists above or below the separating blade. This results in the subsequent interface not being properly inserted between the two layers of co-extruded film, leading to exposed welding of the interface.
[0004] A detection device for preventing exposed welding of infusion bag interfaces includes a membrane splitting blade with a first detection hole and a second detection hole, a first reflective photoelectric sensor disposed above the membrane splitting blade, and a second reflective photoelectric sensor disposed below the membrane splitting blade. When the film separating knife separates the co-extruded film and reaches the designated position, the first reflective photoelectric sensor is facing the first detection hole, and the second reflective photoelectric sensor is facing the second detection hole. The first reflective photoelectric sensor is used to detect whether there is co-extruded film at the end of the first detection hole near the first reflective photoelectric sensor, and the second reflective photoelectric sensor is used to detect whether there is co-extruded film at the end of the second detection hole near the second reflective photoelectric sensor.
[0005] Furthermore, a first bracket is connected to one side of the first reflective photoelectric sensor.
[0006] Furthermore, the first support is L-shaped.
[0007] Furthermore, the first reflective photoelectric sensor includes a first light source and a first light receiving device, the first light source and the first light receiving device being connected together by a first connector, and the first connector being connected to a first bracket.
[0008] Furthermore, a second bracket is connected to one side of the second reflective photoelectric sensor.
[0009] Furthermore, the second support is L-shaped.
[0010] Furthermore, the second reflective photoelectric sensor includes a second light source and a second light receiving device. The second light source and the second light receiving device are connected together by a second connector, and the second connector is connected to a second bracket.
[0011] Furthermore, it also includes a controller, which is electrically connected to the first reflective photoelectric sensor and the second reflective photoelectric sensor.
[0012] Beneficial Effects: The slitting knife is moved using a moving mechanism found in existing technology, making its position controllable. The positions of the first and second reflective photoelectric sensors are fixed. These sensors, existing technology, detect reflections at specific locations. When aligned with the first and second detection holes, if there is no co-extruded film above the slitting knife, the light emitted by the first reflective photoelectric sensor directly enters the first detection hole, detecting no reflection. If co-extruded film is present above the slitting knife, the first reflective photoelectric sensor detects the reflection. The presence of co-extruded film above the first detection hole can be determined by the detection of reflection; similarly, the presence of co-extruded film below the second detection hole can be determined. Only when co-extruded film is present on both the upper and lower sides of the slitting knife is the co-extruded film cut into the required upper and lower layers. The detection device allows for timely removal of improperly cut co-extruded film, preventing exposed joints during subsequent welding. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the specification will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0014] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model.
[0015] In the diagram: 1. Printing station; 2. Co-extruded film; 3. Separating knife; 4. First support; 5. First reflective photoelectric sensor; 6. Second support; 7. Second reflective photoelectric sensor; 8. Peripheral heat sealing station. 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, not all embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom", etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0017] It should be noted that the embodiments and features involved in the embodiments of this utility model can be combined with each other without conflict. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0018] Printing station 1 is the station before the film separating knife 3, and peripheral heat sealing station 8 is the station after the film separating knife 3.
[0019] like Figure 1 The device shown is a detection device for preventing exposed welding of infusion bag interfaces, including a membrane splitting knife 3 with a first detection hole and a second detection hole, a first reflective photoelectric sensor 5 disposed above the membrane splitting knife 3 and a second reflective photoelectric sensor 7 disposed below the membrane splitting knife 3; When the separating blade 3 separates the co-extruded film 2 and reaches the designated position, the first reflective photoelectric sensor 5 is facing the first detection hole, and the second reflective photoelectric sensor 7 is facing the second detection hole. The first reflective photoelectric sensor 5 is used to detect whether there is co-extruded film 2 at the end of the first detection hole near the first reflective photoelectric sensor 5, and the second reflective photoelectric sensor 7 is used to detect whether there is co-extruded film 2 at the end of the second detection hole near the second reflective photoelectric sensor 7.
[0020] In this embodiment, the position of the separating blade 3 is moved by a moving mechanism in the prior art, and the position of the separating blade 3 is controllable. The positions of the first reflective photoelectric sensor 5 and the second reflective photoelectric sensor 7 are fixed. The first reflective photoelectric sensor 5 and the second reflective photoelectric sensor 7 are in the prior art and are used to detect whether there is reflection at a certain position. When the first reflective photoelectric sensor 5 and the second reflective photoelectric sensor 7 are aligned with the first detection hole and the second detection hole respectively, if there is no co-extruded film 2 above the separating blade 3, the light beam emitted by the first reflective photoelectric sensor 5 will directly enter the first detection hole and no reflection will be detected. When there is co-extruded film 2 above the separating blade 3, the first reflective photoelectric sensor 5 can detect the reflection. By whether or not the reflection is detected, it can be determined whether there is co-extruded film 2 above the first detection hole. Similarly, it can be determined whether there is co-extruded film below the second detection hole. When there is co-extruded film 2 on both the upper and lower sides of the separating blade 3, the co-extruded film 2 is cut into the required upper and lower layers. By setting up the detection device, the uncut co-extruded film 2 can be cleaned up in time, avoiding the problem of exposed joint welding parts during subsequent joint welding.
[0021] The first reflective photoelectric sensor 5 is connected to a first bracket 4 on one side, and the first bracket 4 is L-shaped.
[0022] In this embodiment, the first bracket 4 is used to install the first reflective photoelectric sensor 5 at a designated position.
[0023] The second reflective photoelectric sensor 7 is connected to a second bracket 6 on one side, and the second bracket 6 is L-shaped.
[0024] In this embodiment, the second bracket 6 is used to install the second reflective photoelectric sensor 7 at a designated position.
[0025] The first reflective photoelectric sensor 5 includes a first light source and a first light receiving device. The first reflective photoelectric sensor 5 is prior art.
[0026] In this embodiment, the first light source and the first light receiving device are connected together by a first connector, and the first connector is connected to the first bracket 4; the first light source is used to emit light, and the first light receiving device is used to receive the light reflected from the co-extruded film 2.
[0027] The second reflective photoelectric sensor 7 includes a second light source and a second light receiving device. The second reflective photoelectric sensor 7 is existing technology.
[0028] In this embodiment, the second light source and the second light receiving device are connected together by a second connector, and the second connector is connected to the second bracket 6; the second light source is used to emit light, and the second light receiving device is used to receive the light reflected from the co-extruded film 2.
[0029] It also includes a controller, which is electrically connected to the first reflective photoelectric sensor 5 and the second reflective photoelectric sensor 7. The controller is prior art.
[0030] In this embodiment, the controller is used to receive signals transmitted electrically from the first reflective photoelectric sensor 5 and the second reflective photoelectric sensor 7 in real time. When the signals transmitted electrically from the first reflective photoelectric sensor 5 and the second reflective photoelectric sensor 7 cannot be received (that is, when the co-extruded film 2 is not accurately separated), the controller controls the corresponding equipment to stop working and waits for the staff to handle it.
[0031] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if such modifications and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include such modifications and modifications.
Claims
1. An infusion bag preventing interface welding exposure detection device, characterized by, It includes a film separating blade with a first detection hole and a second detection hole, a first reflective photoelectric sensor disposed above the film separating blade and a second reflective photoelectric sensor disposed below the film separating blade; When the film separating knife separates the co-extruded film and reaches the designated position, the first reflective photoelectric sensor is facing the first detection hole, and the second reflective photoelectric sensor is facing the second detection hole. The first reflective photoelectric sensor is used to detect whether there is co-extruded film at the end of the first detection hole near the first reflective photoelectric sensor, and the second reflective photoelectric sensor is used to detect whether there is co-extruded film at the end of the second detection hole near the second reflective photoelectric sensor.
2. The infusion bag prevent interface weld exposure detection device of claim 1, wherein, The first reflective photoelectric sensor is connected to a first bracket on one side.
3. The infusion bag prevent interface weld exposure detection device of claim 2, wherein, The first support is L-shaped.
4. The infusion bag prevent interface weld exposure detection device of claim 3, wherein, The first reflective photoelectric sensor includes a first light source and a first light receiving device. The first light source and the first light receiving device are connected together by a first connector, and the first connector is connected to a first bracket.
5. The infusion bag anti-weld line exposure detection device of claim 1, wherein, A second bracket is connected to one side of the second reflective photoelectric sensor.
6. The infusion bag anti-weld line exposure detection device of claim 5, wherein, The second bracket is L-shaped.
7. The infusion bag anti-weld line exposure detection device of claim 3, wherein, The second reflective photoelectric sensor includes a second light source and a second light receiving device. The second light source and the second light receiving device are connected together by a second connector, and the second connector is connected to a second bracket.
8. The device according to any one of claims 1 to 7, wherein It also includes a controller, which is electrically connected to the first reflective photoelectric sensor and the second reflective photoelectric sensor.