Facial mask bag automatic weighing device and facial mask cotton folding machine
By incorporating upper and lower weighing machines into the mask folding machine, and utilizing sensors to detect the weight of the mask bags and remove defective products, the problem of the mask folding machine's inability to automatically and accurately weigh and remove defective products has been solved, thus improving production quality and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN YIHAO MASCH TECH GRP CO LTD
- Filing Date
- 2025-04-09
- Publication Date
- 2026-04-21
AI Technical Summary
Existing mask folding machines lack automated and accurate weighing devices, making it impossible to detect and remove defective products in a timely manner, resulting in a decline in production quality.
The design includes an upper weighing machine and a lower weighing machine, which respectively include an upper feeding belt, an upper weighing component, an upper discharging belt and an upper rejection mechanism, as well as a lower weighing machine, a lower feeding belt, a lower weighing component and a lower rejection mechanism. The weight of the mask bags is detected by sensors and defective products are rejected, thus achieving automated and accurate weighing.
It enables automated and accurate weighing of finished mask bags and removal of defective products, improving the production quality and efficiency of the mask folding machine.
Smart Images
Figure CN224142879U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of facial mask packaging technology, and in particular to an automatic weighing device for facial mask bags and a facial mask folding machine. Background Technology
[0002] In the beauty and skincare industry, especially in the production of face masks, face mask folding machines use at least one face mask processing device to fold the mask fabric and bag it to obtain finished face mask bags. The finished face mask bags are then fed out via a feed belt. However, the finished products fed out by the feed belt inevitably include a small number of empty packaging bags and more than the predetermined number of face mask packaging bags, which are defective. However, current face mask folding machines on the market lack a device that can directly receive finished face mask bags and automatically and accurately weigh and remove defective products. As a result, defective products cannot be detected and removed in a timely and accurate manner, thus reducing the production quality of face mask folding machines.
[0003] Therefore, there is an urgent need to provide automatic weighing devices for face mask bags and face mask folding machines that can implement automated and accurate weighing and ensure that defective products are rejected. Utility Model Content
[0004] To address the shortcomings of the prior art, this utility model provides an automatic weighing device for facial mask bags, comprising: an upper weighing machine, including an upper feeding belt, an upper weighing assembly, an upper discharging belt, and an upper rejection mechanism. The upper feeding belt receives first finished facial mask bags. The upper weighing assembly weighs the first finished facial mask bags conveyed from the upper feeding belt to distinguish between defective and qualified bags. The upper discharging belt receives the defective and qualified bags identified and conveyed by the upper weighing assembly. Defective bags on the upper discharging belt are rejected by the upper rejection mechanism, and qualified bags are removed. The bags are further conveyed for collection; a lower weighing machine, arranged vertically parallel to the upper weighing machine at intervals, includes a lower feed belt, a lower weighing assembly, a lower discharge belt, and a lower rejection mechanism. The lower feed belt receives the second finished mask bags, and the lower weighing assembly weighs the second finished mask bags conveyed from the lower feed belt to identify defective and qualified bags. The lower discharge belt receives the defective and qualified bags identified and conveyed by the lower weighing assembly. The defective bags on the lower discharge belt are rejected by the lower rejection mechanism, and the qualified bags are further conveyed for collection.
[0005] Furthermore, the length of the end of the upper feed belt receiving the first finished facial mask bag extending horizontally beyond the end of the lower feed belt receiving the second finished facial mask bag is 212±50mm.
[0006] Furthermore, once the upper feed belt receives the first finished mask bag, it accelerates the bag, thereby increasing the spacing between adjacent first finished mask bags on the upper feed belt. Similarly, once the lower feed belt receives the second finished mask bag, it accelerates the bag, thereby increasing the spacing between adjacent second finished mask bags on the lower feed belt.
[0007] Furthermore, the upper weighing component includes an upper weighing belt and an upper weighing sensor. The upper weighing sensor is used to detect the weight of the first finished mask bag on the upper weighing belt. When the detected weight is a first preset weight, the number of mask sheets packaged in the first finished mask bag is a first preset quantity, thus it is determined to be a qualified first finished mask bag, and the qualified first finished mask bag is further conveyed by the upper discharge belt. When the detected weight is greater than or less than the first preset weight, the number of mask sheets packaged in the first finished mask bag is greater than or less than the first preset quantity, thus it is determined to be a defective first finished mask bag, and the upper rejection mechanism removes the defective first finished mask bag from the upper discharge belt; the lower weighing... The heavy-duty component includes a lower weighing belt and a lower weighing sensor. The lower weighing sensor is used to detect and identify the weight of the second finished product mask bag on the lower weighing belt. When the detected weight is the second preset weight, the number of mask sheets packaged in the second finished product mask bag is the second preset quantity, thus it is identified as a qualified second finished product mask bag. The qualified second finished product mask bag is then transported to the lower discharge belt via the lower weighing belt. When the detected weight is greater than or less than the second preset weight, the number of mask sheets packaged in the second finished product mask bag is greater than or less than the second preset quantity, thus it is identified as a defective second finished product mask bag. The lower rejection mechanism then rejects the defective second finished product mask bag from the lower discharge belt.
[0008] Furthermore, both the upper and lower load cells include sensor probes, with the free ends of the respective sensor probes located at predetermined intervals below the upper and lower weighing belts.
[0009] Furthermore, the upper rejection mechanism includes an air nozzle and an upper waste container. The air nozzle and the upper waste container are located opposite each other on both sides of the upper discharge belt. When the first finished product mask bag is identified as a defective first finished product mask bag, the air nozzle blows air onto the first finished product mask bag to make it detach from the upper discharge belt and fall into the upper waste container. The lower rejection mechanism includes a flipping cylinder, a flipping plate, and a lower waste container. The lower waste container is located below the flipping plate. In normal operation, the upper surface of the flipping plate is downstream of the upper surface of the lower discharge belt, and the two are adjacent to each other. When the second finished product mask bag is identified as a qualified second finished product mask bag, the flip plate remains in its normal state. When the second finished product mask bag is identified as a defective second finished product mask bag, the piston rod of the flip plate cylinder extends to push the flip plate up, so that the upper surface of the flip plate is relatively far away from the upper surface of the lower discharge belt. Thus, the defective second finished product mask bag falls into the lower waste container after passing through the lower discharge belt. After the defective second finished product mask bag falls, the piston rod of the flip plate cylinder retracts to pull the flip plate back to its normal state.
[0010] Furthermore, the weighing machine also includes an upper discharge guide plate, which is used to receive the first qualified finished facial mask bag conveyed by the upper discharge belt and guide it to a finished product collection belt. The flip plate, which is in normal condition, is used to receive the second qualified finished facial mask bag conveyed by the lower discharge belt and guide it to the finished product collection belt.
[0011] Furthermore, the upper feed belt, upper weighing belt, upper discharge belt, and upper discharge guide plate are arranged sequentially in the horizontal direction, while the lower feed belt, lower weighing belt, lower discharge belt, and tilting plate are arranged sequentially in the horizontal direction.
[0012] Furthermore, the automatic weighing device for facial mask bags also includes a control cabinet electrically connected to both the upper and lower weighing machines. The control cabinet includes an electrical box and a touch screen, which receives control commands for the operation of the upper and lower weighing machines.
[0013] To achieve another objective of this utility model, a facial mask folding machine is provided, comprising: a first facial mask processing device for processing a first finished facial mask bag and including a first feeding belt; a second facial mask processing device for processing a second finished facial mask bag and including a second feeding belt, wherein the first feeding belt and the second feeding belt are arranged horizontally and parallel to each other; and an automatic weighing device for the facial mask bag, wherein the upper feeding belt receives the first finished facial mask bag conveyed by the first feeding belt, and the lower feeding belt receives the second finished facial mask bag conveyed by the second feeding belt.
[0014] The automatic weighing device for facial mask bags and the facial mask folding machine provided by this utility model have the following beneficial effects:
[0015] With the upper and lower weighing machines, the machine can not only directly receive finished mask bags and automatically and accurately weigh them, removing defective finished mask bags as defective products, but also automatically weigh two kinds of finished mask bags of the same or different weights at the same time, thus achieving high weighing efficiency. This results in high production quality and efficiency for the mask folding machine. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of this utility model.
[0017] Figure 1 A front view of the overall structure of the mask folding machine with an automatic weighing device for mask bags provided by this utility model;
[0018] Figure 2 A top view of the overall structure of the mask folding machine with an automatic weighing device for mask bags provided by this utility model;
[0019] Figure 3 Front view of the overall structure of the automatic weighing device for facial mask bags provided by this utility model;
[0020] Figure 4 Top view of the overall structure of the automatic weighing device for facial mask bags provided by this utility model;
[0021] Figure 5 Side view of the overall structure of the automatic weighing device for face mask bags provided by this utility model;
[0022] Figure 6 This is a schematic diagram showing the structure of the upper and lower weighing sensors of the automatic weighing device for face mask bags provided by this utility model.
[0023] Explanation of reference numerals in the attached figures:
[0024] 100. Facial mask folding machine; 10. Automatic weighing device for facial mask bags; 1. Upper weighing machine; 11. Upper feeding belt; 12. Upper weighing assembly; 121. Upper weighing belt; 122. Upper weighing sensor; 13. Upper discharge belt; 14. Upper rejection mechanism; 141. Air nozzle; 142. Upper waste container; 15. Upper discharge guide plate; 2. Lower weighing machine; 21. Lower feeding belt; 22. Lower weighing assembly; 221. Lower weighing belt; 222. Lower weighing sensor; 23. Lower discharge belt; 24. Lower rejection mechanism; 241. Flipping cylinder; 242. Flipping plate; 243. Lower waste container; 3. Control cabinet; 31. Electrical box; 32. Touch screen; 20. First facial mask processing device; 201. First feeding belt; 30. Second facial mask processing device; 301. Second feeding belt; 40. Finished product collection belt. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, 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. Without further limitation, an element limited by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Unless otherwise specified, the various features in the embodiments and examples of this utility model can be combined with each other, all within the scope of protection of this utility model.
[0026] refer to Figures 1 to 6As an objective of this utility model, an automatic weighing device 10 for facial mask bags is provided, which includes an upper weighing machine 1 and a lower weighing machine 2. The upper weighing machine 1 includes an upper feeding belt 11, an upper weighing component 12, an upper discharging belt 13, and an upper rejection mechanism 14. The upper feeding belt 11 is used to receive first finished facial mask bags. The upper weighing component 12 is used to weigh the first finished facial mask bags conveyed to it from the upper feeding belt 11 to identify, i.e., to identify and distinguish the first finished facial mask bags with defects and the first finished facial mask bags with qualified products. It should be noted that the finished facial mask bags with defects described in this utility model include empty facial mask bags and facial mask bags with a number of masks inside that is greater than or less than a preset number. The upper discharging belt 13 is used to receive the first finished facial mask bags with defects and the first finished facial mask bags with qualified products that have been identified and conveyed by the upper weighing component 12. The first finished facial mask bags with defects on the upper discharging belt 13 are rejected by the upper rejection mechanism 14, and the first finished facial mask bags with qualified products are further conveyed for collection. The lower weighing machine 2 and the upper weighing machine 1 are arranged parallel to each other vertically. The lower weighing machine 2 includes a lower feed belt 21, a lower weighing component 22, a lower discharge belt 23, and a lower rejection mechanism 24. The lower feed belt 21 is used to receive the second finished product mask bags. The lower weighing component 22 is used to weigh the second finished product mask bags conveyed to it from the lower feed belt 21 to identify the second finished product mask bags with defects and the second finished product mask bags with good quality. The lower discharge belt 23 is used to receive the second finished product mask bags with defects and the second finished product mask bags with good quality after being identified and conveyed by the lower weighing component 22. The second finished product mask bags with defects on the lower discharge belt 23 are rejected by the lower rejection mechanism 24, and the second finished product mask bags with good quality are further conveyed for collection. The automatic weighing device 10 for facial mask bags provided by this utility model, by setting up an upper weighing machine 1 and a lower weighing machine 2, can not only directly receive finished facial mask bags and automatically and accurately weigh them and remove defective finished facial mask bags as defective products, but also can automatically weigh two finished facial mask bags of the same weight or different weights at the same time, thus having high weighing efficiency, thereby improving the production quality and production efficiency of the facial mask folding machine 100.
[0027] Please refer to the reference. Figure 3 Preferably, the length D of the end of the upper feed belt 11 that receives the first finished mask bag extending horizontally beyond the end of the lower feed belt 21 that receives the second finished mask bag is 212±50mm. With this arrangement, it can perfectly connect with the two feed belts of the mask folding machine 100 located upstream of the automatic mask bag weighing device 10, especially the first feed belt 201 of the first mask processing device 20 and the second feed belt 301 of the second mask processing device 30, which have a length difference between their adjacent ends in the horizontal direction. This ensures that the upper feed belt 11 and the lower feed belt 21 can reliably receive the first finished mask bag and the second finished mask bag, respectively.
[0028] Preferably, once the upper feed belt 11 receives a first finished mask bag, it accelerates the bag to increase the spacing between adjacent first finished mask bags on the upper feed belt 11. Similarly, once the lower feed belt 21 receives a second finished mask bag, it accelerates the bag to increase the spacing between adjacent second finished mask bags on the lower feed belt 21. In this way, by accelerating the finished mask bags on each feed belt in a timely manner, the spacing between adjacent finished mask bags increases, which makes it easier for the corresponding weighing components located downstream of each feed belt to weigh individual finished mask bags more accurately.
[0029] Please refer to the reference. Figure 3 and Figure 6Specifically, the upper weighing assembly 12 includes an upper weighing belt 121 and an upper weighing sensor 122. The upper weighing sensor 122 is used to detect the weight of the first finished mask bag on the upper weighing belt 121. When the detected weight is a first preset weight, the number of mask sheets packaged in the first finished mask bag is a first preset number, thus determining it as a qualified first finished mask bag. The qualified first finished mask bag is further conveyed by the upper discharge belt 13. When the detected weight is greater than or less than the first preset weight, the number of mask sheets packaged in the first finished mask bag is determined as a first preset number. If the quantity is greater than or less than the first preset quantity, it is judged as a first finished product mask bag with defects. That is to say, when the first finished product mask bag does not contain any masks, contains too many or too few masks and does not match the first preset weight, the upper weighing sensor 122 and the control system of the control cabinet 3 connected to the upper weighing sensor 122 will judge the first finished product mask bag as a non-conforming product, that is, a first finished product mask bag with defects. In addition, the second finished product mask bag with defects is understood in a similar way, and the upper rejection mechanism 14 will reject the first finished product mask bag with defects from the upper discharge belt 13. The lower weighing assembly 22 includes a lower weighing belt 221 and a lower weighing sensor 222. The lower weighing sensor 222 is used to detect and identify the weight of the second finished mask bag on the lower weighing belt 221. When the detected weight is the second preset weight, the number of mask sheets packaged in the second finished mask bag is the second preset quantity, thus it is identified as a qualified second finished mask bag. The qualified second finished mask bag is transported to the lower discharge belt 23 via the lower weighing belt 221. When the detected weight is greater than or less than the second preset weight, the number of mask sheets packaged in the second finished mask bag is greater than or less than the second preset quantity, thus it is identified as a defective second finished mask bag. The lower rejection mechanism 24 rejects the defective second finished mask bag from the lower discharge belt 23. It should be understood that the first preset weight and the second preset weight can be specific values or a certain range of values, as long as they correspond to the expected number of face masks to be packaged in the two types of finished face mask bags. Furthermore, the first preset weight and the second preset weight can be the same or different. Thus, the upper weighing sensor 122 and the lower weighing sensor 222 can be set to accurately weigh both finished face mask bags that have packaged the same or different numbers of face masks, thereby improving the applicability of the automatic weighing device 10 for face mask bags.
[0030] Please refer to the reference. Figure 6 Specifically, both the upper weighing sensor 122 and the lower weighing sensor 222 include sensor probes. The free ends of the respective sensor probes of the upper weighing sensor 122 and the lower weighing sensor 222 are located at predetermined intervals below the upper weighing belt 121 and the lower weighing belt 221, respectively. In this way, the upper weighing sensor 122 and the lower weighing sensor 222 are located relatively inside the automatic weighing device 10 for face mask bags, which is not easily affected by unexpected external forces and can easily ensure the accuracy of weighing.
[0031] Please refer to the reference. Figure 3 and Figure 4 Specifically, the upper rejection mechanism 14 includes an air nozzle 141 and an upper waste container 142. The air nozzle 141 and the upper waste container 142 are located on opposite sides of the upper discharge belt 13. When the first finished mask bag is identified as a defective first finished mask bag, the air nozzle 141 blows air onto the first finished mask bag to make it detach from the upper discharge belt 13 and fall into the upper waste container 142. The lower rejection mechanism 24 includes a flip-plate cylinder 241, a flip-plate 242, and a lower waste container 243. The lower waste container 243 is located below the flip-plate 242. Under normal conditions, the upper surface of the flip-plate 242 is downstream of the upper surface of the lower discharge belt 23 and the two are flush. When the second finished product mask bag is identified as a qualified second finished product mask bag, the flip-plate 242 remains in normal condition. When the second finished product mask bag is identified as a defective second finished product mask bag, the piston rod of the flip-plate cylinder 241 extends to push the flip-plate 242 to lift, so that the upper surface of the flip-plate 242 is relatively far away from the upper surface of the lower discharge belt 23. Thus, the defective second finished product mask bag falls into the lower waste container 243 after passing through the lower discharge belt 23. After the defective second finished product mask bag falls, the piston rod of the flip-plate cylinder 241 retracts to pull back the flip-plate 242 to restore it to normal condition. Therefore, by using the upper rejection mechanism 14 and the lower rejection mechanism 24, it is possible to reliably and accurately reject unqualified finished mask bags.
[0032] Please refer to the reference. Figure 2 and Figure 3 Preferably, the upper weighing machine 1 further includes an upper discharge guide plate 15, which receives the first qualified finished mask bag conveyed by the upper discharge belt 13 and guides it onto the finished product collection belt 40. The normally positioned flap 242 receives the second qualified finished mask bag conveyed by the lower discharge belt 23 and guides it onto the finished product collection belt 40. Therefore, the upper discharge guide plate 15 and flap 242 can further convey both qualified finished mask bags to the same finished product collection belt 40 for collection. This is particularly suitable for situations where two qualified finished mask bags package the same number of masks, improving collection efficiency and facilitating subsequent processing, such as boxing or transferring, once a certain total number of qualified finished mask bags have been collected.
[0033] Please refer to the reference. Figure 3 Preferably, the upper feeding belt 11, upper weighing belt 121, upper discharging belt 13, and upper discharging guide plate 15 are arranged sequentially in the horizontal direction, and the lower feeding belt 21, lower weighing belt 221, lower discharging belt 23, and flip plate 242 are arranged sequentially in the horizontal direction. In this way, not only is the overall structure of the automatic mask bag weighing device 10 compact, but the conveying accuracy of the first and second finished mask bags is also high, which is conducive to both accurate weighing and neat collection.
[0034] Please refer to the reference. Figure 2 and Figure 3 Preferably, the automatic mask bag weighing device 10 further includes a control cabinet 3 electrically connected to both the upper weighing machine 1 and the lower weighing machine 2. The control cabinet 3 includes an electrical box 31 and a touch screen 32. The electrical box 31 contains a power supply and a control system such as a PLC or microcontroller. The control system precisely controls the movement of each belt and receives the weighing results from the upper weighing assembly 12 and the lower weighing assembly 22, thereby controlling the corresponding actions of each rejection mechanism. The touch screen 32 receives control commands for the operation of the upper weighing machine 1 and the lower weighing machine 2, either manually or through a preset program. Therefore, the automatic mask bag weighing device 10 with the control cabinet 3 has the advantages of high automation and convenient operation.
[0035] Please refer to Figure 1 and Figure 2 As an objective of this utility model, a facial mask folding machine 100 is also provided, which includes a first facial mask processing device 20, a second facial mask processing device 30, and an automatic facial mask bag weighing device 10 of any one of the above. The first facial mask processing device 20 is used to obtain a first finished facial mask bag by folding and bagging the facial mask fabric and includes a first feeding belt 201. The second facial mask processing device 30 is used to obtain a second finished facial mask bag by folding and bagging the facial mask fabric and includes a second feeding belt 301. The first feeding belt 201 and the second feeding belt 301 are arranged horizontally and parallel to each other. The upper feeding belt 11 receives the first finished facial mask bag conveyed by the first feeding belt 201, and the lower feeding belt 21 receives the second finished facial mask bag conveyed by the second feeding belt 301. Since the automatic facial mask bag weighing device 10 is any one of the above-mentioned automatic facial mask bag weighing devices, the facial mask folding machine 100 can obtain the beneficial effects brought by any one of the automatic facial mask bag weighing devices 10, which will not be described in detail here. Therefore, the mask folding machine 100 can detect defective products in a timely and accurate manner, thereby significantly improving production quality.
[0036] Finally, it should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A mask bag automatic weighing device, characterized in that, include: The weighing machine includes an upper feed belt, an upper weighing assembly, an upper discharge belt, and an upper rejection mechanism. The upper feed belt is used to receive a first finished product mask bag. The upper weighing assembly is used to weigh the first finished product mask bags conveyed from the upper feed belt to identify first finished product mask bags with defects and first finished product mask bags with good quality. The upper discharge belt is used to receive the first finished product mask bags with defects and first finished product mask bags with good quality after being identified and conveyed by the upper weighing assembly. The first finished product mask bags with defects on the upper discharge belt are rejected by the upper rejection mechanism, and the first finished product mask bags with good quality are further conveyed for collection. A lower weighing machine is arranged parallel to the upper weighing machine in a vertical direction, spaced vertically apart. The lower weighing machine includes a lower feed belt, a lower weighing assembly, a lower discharge belt, and a lower rejection mechanism. The lower feed belt is used to receive second finished mask bags. The lower weighing assembly is used to weigh the second finished mask bags conveyed from the lower feed belt to identify defective and qualified masks. The lower discharge belt is used to receive the defective and qualified masks identified and conveyed by the lower weighing assembly. The defective masks on the lower discharge belt are rejected by the lower rejection mechanism, and the qualified masks are further conveyed for collection.
2. The automatic weighing device for facial mask pouches according to claim 1, wherein The length of the end of the upper feed belt that receives the first finished facial mask bag that extends horizontally beyond the end of the lower feed belt that receives the second finished facial mask bag is 212±50mm.
3. The automatic weighing device for facial mask pouches according to claim 1, wherein Once the upper feed belt receives the first finished mask bag, it accelerates to increase the spacing between adjacent first finished mask bags on the upper feed belt. Similarly, once the lower feed belt receives the second finished mask bag, it accelerates to increase the spacing between adjacent second finished mask bags on the lower feed belt.
4. The automatic weighing device for facial mask pouches according to claim 1, wherein The upper weighing assembly includes an upper weighing belt and an upper weighing sensor. The upper weighing sensor detects the weight of the first finished mask bag on the upper weighing belt. When the detected weight is a first preset weight, the number of mask sheets packaged in the first finished mask bag is a first preset quantity, thus identifying it as a qualified first finished mask bag. The qualified first finished mask bag is further conveyed by the upper discharge belt. When the detected weight is greater than or less than the first preset weight, the number of mask sheets packaged in the first finished mask bag is greater than or less than the first preset quantity, thus identifying it as a defective first finished mask bag. The upper rejection mechanism removes the defective first finished mask bag from the upper discharge belt. The lower weighing... The heavy-duty component includes a lower weighing belt and a lower weighing sensor. The lower weighing sensor is used to detect and identify the weight of the second finished mask bag on the lower weighing belt. When the detected weight is a second preset weight, the number of mask sheets packaged in the second finished mask bag is a second preset quantity, thus identifying it as a qualified second finished mask bag. The qualified second finished mask bag is then transported to the lower discharge belt via the lower weighing belt. When the detected weight is greater than or less than the second preset weight, the number of mask sheets packaged in the second finished mask bag is greater than or less than the second preset quantity, thus identifying it as a defective second finished mask bag. The lower rejection mechanism then rejects the defective second finished mask bag from the lower discharge belt.
5. The automatic weighing device for facial mask pouches according to claim 4, wherein Both the upper and lower weighing sensors include sensor probes, and the free ends of the sensor probes of the upper and lower weighing sensors are located at predetermined intervals below the upper and lower weighing belts, respectively.
6. The automatic weighing device for facial mask pouches according to claim 4, wherein The upper rejection mechanism includes an air nozzle and an upper waste container. The air nozzle and the upper waste container are located opposite each other on both sides of the upper discharge belt. When the first finished mask bag is identified as a defective finished mask bag, the air nozzle blows air onto the defective finished mask bag to make it detach from the upper discharge belt and fall into the upper waste container. The lower rejection mechanism includes a flipping cylinder, a flipping plate, and a lower waste container. The lower waste container is located below the flipping plate. In normal operation, the upper surface of the flipping plate is downstream of the upper surface of the lower discharge belt and the two are flush. When the second finished product mask bag is identified as a qualified second finished product mask bag, the flip plate remains in its normal state. When the second finished product mask bag is identified as a defective second finished product mask bag, the piston rod of the flip plate cylinder extends to push the flip plate up, so that the upper surface of the flip plate is relatively far away from the upper surface of the lower discharge belt. Thus, the second finished product mask bag falls into the lower waste container after passing through the lower discharge belt. After the second finished product mask bag falls, the piston rod of the flip plate cylinder retracts to pull the flip plate back to its normal state.
7. The automatic weighing device for facial mask pouches according to claim 6, wherein The weighing machine also includes an upper discharge guide plate, which is used to receive the first finished product qualified mask bag conveyed by the upper discharge belt and guide it to a finished product collection belt. The flip plate, which is in normal condition, is used to receive the second finished product qualified mask bag conveyed by the lower discharge belt and guide it to the finished product collection belt.
8. The automatic weighing device for facial mask pouches according to claim 7, wherein The upper feed belt, the upper weighing belt, the upper discharge belt, and the upper discharge guide plate are arranged sequentially in the horizontal direction, and the lower feed belt, the lower weighing belt, the lower discharge belt, and the flip plate are arranged sequentially in the horizontal direction.
9. The automatic weighing device for facial mask pouches according to claim 6, wherein, The automatic weighing device for facial mask bags also includes a control cabinet electrically connected to both the upper and lower weighing machines. The control cabinet includes an electrical box and a touch screen, and the touch screen receives control over the operation of the upper and lower weighing machines.
10. A mask folding machine characterized by include: A first facial mask processing device is used to process the first finished facial mask bag and includes a first feeding belt; The second mask processing device is used to process the second finished mask bag and includes a second feeding belt, wherein the first feeding belt and the second feeding belt are arranged horizontally and parallel to each other; The automatic weighing device for facial mask bags as described in any one of claims 1 to 9, wherein the upper feed belt receives the first finished facial mask bag conveyed by the first feed belt, and the lower feed belt receives the second finished facial mask bag conveyed by the second feed belt.