Welding system for combined cover of infusion bag

Abstract

The utility model discloses an infusion bag combined cover welding system which comprises a welding rotary table, and a plurality of grabbing units are evenly distributed in the circumferential direction of the welding rotary table. The grabbing unit comprises an upper clamping jaw for grabbing a cover body and a lower clamping jaw for grabbing a bag body; the heating plate is used for heating the welding surfaces of the cover body and the bag body, and gaps are reserved between the cover body and the heating plate and between the bag body and the heating plate; the welding state sensing unit is used for detecting the welding state of the welding area of the cover body and the bag body. According to the infusion bag combined cover welding system, the welding state sensing unit is used for detecting the welding state of the welding area of the cover body and the bag body; the overheated cover body or bag body is found and marked; the combined cover with poor welding quality can be found and removed in time, and the quality of the infusion bag is guaranteed.

Description

Technical Field

[0001] The utility model relates to an infusion bag processing device, in particular to an infusion bag combined cover welding system. Background Art

[0002] During the current sealing (cap welding) process for filled products, the lower edge of the lid is positioned near the upper surface of the heating plate, while the upper edge of the bag is positioned near the lower surface. The lid and bag are heated while rotating along the heating plate on a rotating welding table. Once the welding temperature is reached, the clamping jaws drive the weld together. This can create an unsightly weld and even cause leakage, necessitating a quality inspection system. Utility Model Content

[0003] If the lid or bag is too close to the heating plate during heating, the temperature will be too high and the lid will burn. Currently, this abnormality in the lid heating process cannot be discovered in time and is usually detected in the back-end process.

[0004] The purpose of this utility model is to provide an infusion bag assembly cover welding system which has a novel and unique structure, is easy to use, and can promptly detect welding failures caused by overheating; the specific technical solution is as follows:

[0005] A welding system for an infusion bag combination cover comprises a welding rotary table with a plurality of gripping units evenly distributed around the circumference of the welding rotary table; the gripping units comprise an upper clamping claw for gripping the cover body and a lower clamping claw for gripping the bag body; a heating plate for heating the welding surfaces of the cover body and the bag body, with a gap between the cover body and the bag body and the heating plate; and a welding status sensing unit for detecting the welding status of the welding area between the cover body and the bag body.

[0006] Furthermore, the welding state sensing unit is a camera; the viewing angle of the camera covers the heating plate.

[0007] Furthermore, the viewing angle of the camera covers the front third of the heating plate.

[0008] Furthermore, the upper claw is driven by a track-type cam mechanism.

[0009] The utility model discloses an infusion bag combination cover welding system that detects the welding status of the welding area between the cover body and the bag body through a welding status sensing unit; detects the cover body or bag body with overheated welding surface and marks it; and can promptly detect and eliminate combination covers with poor welding quality, thereby ensuring the quality of the infusion bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a structural diagram of the welding system for the combined cover of the infusion bag of the utility model;

[0011] Figure 2 for Figure 1 Main view structure diagram;

[0012] Figure 3 This is an enlarged view of part A.

[0013] In the figure: 1. Welding rotary table; 2. Heating plate; 3. Camera; 4. Cover area; 5. Cover; 6. Bag; 7. Upper clamping claw; 8. Lower clamping claw. DETAILED DESCRIPTION

[0014] The present invention is described in more detail below using embodiments. The present invention can be embodied in a variety of forms and should not be construed as being limited to the exemplary embodiments described herein.

[0015] For ease of description, spatially relative terms such as "upper," "lower," "left," and "right" may be used herein to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. For example, if the device in the figures is inverted, an element described as being "below" another element or feature would be positioned "above" the other element or feature. Thus, the exemplary term "below" can encompass both above and below orientations. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0016] like Figure 1 and Figure 2 As shown, the infusion bag combination cover welding system in this embodiment includes a welding rotary table 1, and a plurality of grabbing units are evenly distributed around the circumference of the welding rotary table 1; the grabbing unit includes an upper clamping claw 7 for grabbing the cover body 5 and a lower clamping claw 8 for grabbing the bag body 6; it also includes a heating plate for heating the welding surface of the cover body 5 and the bag body 6, and a gap is left between the cover body and the bag body and the heating plate; it includes a welding status sensing unit for detecting the welding status of the welding area between the cover body and the bag body.

[0017] The welding status sensing unit can be implemented using a pair of photoelectric tubes. A receiving tube receives light from the light-emitting tube and determines whether smoke is present in the space between them based on the light intensity. This approach requires multiple pairs of photoelectric tubes to be installed above and below the heating plate 2, both inside and outside, making the system complex. Alternatively, a camera 3 can be used as the welding status sensing unit. The camera 3 only needs to have a field of view covering area 4 that covers the entire heating plate. Of course, smoke detection software is also required. This software is currently available and will not be described in detail here.

[0018] The poor welding condition is mostly caused by the upper clamping jaws 7 clamping the cover body 5 at a too high position, resulting in the welding surface of the cover body 5 being too close to the heating plate 2, causing the welding surface to overheat, or the lower clamping jaws 8 clamping the bag body 6 at a too low position, resulting in the welding surface of the bag body 6 being too close to the heating plate 2, causing the welding surface to overheat. This kind of fault can produce a camera image in the front third of the heating plate 2 that can distinguish smoke. Therefore, the viewing angle of the camera 3 can cover the front third of the heating plate to improve the clarity of the image, thereby improving the smoke recognition accuracy.

[0019] The upper clamping jaw or the lower clamping jaw is driven by a track cam mechanism; before approaching the heating plate 2, the track protrusion lifts the roller of the upper clamping jaw fixing frame, or the track protrusion presses down the roller of the lower clamping jaw fixing frame; the stroke accuracy of the cam structure is high, which is beneficial to reduce the occurrence rate of failures caused by overheating of the welding surface.

[0020] The upper clamping jaw or the lower clamping jaw can also be driven by an electric cylinder, so that the stroke accuracy of the lower clamping jaw 8 or the lower clamping jaw 8 is higher, and the occurrence rate of failures caused by overheating of the welding surface is reduced.

[0021] Because the welding process should not be stopped midway, the infusion bag assembly cap welding system should also include an intelligent control unit and a bag counter. An industrial computer or DSP system can serve as the intelligent control unit. A camera transmits images to the intelligent control unit via a video interface. Software installed in the intelligent control unit analyzes the camera images to determine whether smoke is generated at the welding site and count the number of bags welded during the process. Software for determining the presence of smoke in images is currently available and is provided by camera manufacturers. Alternatively, a smart camera with communication capabilities can be used, embedded with software for determining the presence of smoke in the image. Smoke alarm signals are promptly transmitted to the intelligent control unit via the communication interface. In this case, the intelligent control unit can be a PLC or single-chip microcomputer system. Upon detecting smoke, the intelligent control unit can directly generate audible and visual alarms, allowing on-site operators to reject bags with poor weld quality. Alternatively, a mechanical mechanism, as is conventionally known, can be used to locate bags based on the count results and automatically reject poor quality bags.

[0022] The infusion bag combination cover welding system in this embodiment uses a camera to detect the welding status of the welding area between the cover body and the bag body; it finds the cover body or bag body with overheated welding surface and marks it; it can promptly find and eliminate combination covers with poor welding quality to ensure the quality of the infusion bag.

[0023] The above examples are only used to illustrate the present invention. In addition, there are many different implementation methods. These implementation methods are all conceivable by those skilled in the art after understanding the concept of the present invention. Therefore, they are not listed here one by one.

Claims

1. A welding system for an infusion bag assembly cover, comprising a welding rotary table with a plurality of gripping units evenly distributed around the circumference of the welding rotary table; the gripping units comprising an upper clamping claw for gripping the cover and a lower clamping claw for gripping the bag; and a heating plate for heating the welding surfaces of the cover and the bag, with a gap between the cover and the bag and the heating plate; characterized in that: The invention comprises a welding state sensing unit for detecting the welding state of the welding area between the cover body and the bag body.

2. The infusion bag assembly cover welding system according to claim 1, characterized in that: The welding state sensing unit is a camera; the viewing angle of the camera covers the heating plate.

3. The infusion bag assembly cover welding system according to claim 2, characterized in that: The viewing angle of the camera covers the front third of the heating plate.

4. The infusion bag assembly cover welding system according to claim 1, characterized in that: The upper clamping claw or the lower clamping claw is driven by a track-type cam mechanism.

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