A detection device for baby wet wipe production

Abstract

The application discloses a kind of infant wet wipe production detection equipment, including cover conveying mechanism, first wet wipe conveying mechanism, first shell, stick cover mechanism, second wet wipe conveying mechanism, carousel sorting machine and multiple third wet wipe conveying mechanism, wherein, stick cover mechanism includes microneedle replacement mechanism, the microneedle replacement mechanism is fixedly connected on annular shell, the microneedle replacement mechanism uses tracer gas to replace the air in infant wet wipe package, the tracer gas is inert gas.Compared with prior art, a kind of infant wet wipe production detection equipment of the application, which uses tracer gas as detection medium, compared with traditional detection means, the speed of detection is faster, the detection result is more accurate, avoids misjudgment, avoids the situation that leak appears in production stage and is not detected, and can sort infant wet wipe according to detection result, reduce the participation of artificial.

Description

Technical Field

[0001] This invention belongs to the field of wet wipe production and testing technology, specifically relating to a testing device for the production of baby wet wipes. Background Technology

[0002] As an essential daily care product for infants and young children, the sealing performance of baby wipes is crucial. Infants' skin barriers are not fully developed, and their immunity is weak; therefore, the sealing performance of wipes directly affects their safety and effectiveness. Currently, the requirements for the integrity of the seal are extremely high during the production process of baby wipes, especially in identifying defects smaller than 0.1mm. These tiny defects may cause the moisture inside the packaging to evaporate slowly, while allowing external microorganisms to enter, causing the wipes to spoil within their shelf life, thus affecting the user experience and the health of infants and young children.

[0003] Existing seal testing methods, such as pressure testing, can identify sealing problems to some extent, but are significantly affected by environmental factors such as volume, temperature, and time. Especially for micropores smaller than 0.1 mm, pressure testing has extremely low sensitivity, easily allowing products with such defects to pass inspection, posing safety hazards. While vacuum testing offers rapid response, it has limitations in response speed and adaptability to changes in ambient air pressure. In the context of high-speed production of baby wipes, vacuum testing's slow response time makes it difficult to inspect every product promptly, and even slight fluctuations in ambient air pressure can lead to minor leaks being misjudged as acceptable, causing seal failures during storage and transportation.

[0004] These hard-to-detect micropores are precisely the "invisible killer" of leaky seals in baby wipes. The resulting slow leakage is difficult to detect during the production and testing phase, but it gradually worsens during the product's storage period, eventually leading to spoilage when the product is used by the consumer. This makes products with such defects very easy to pass inspection, creating serious safety hazards. Ultimately, this results in consumers facing problems such as dry wipes and contamination, severely impacting brand reputation and the safety of infants and young children.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a testing device for the production of baby wipes, which can solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, a specific embodiment of the present invention provides the following technical solution:

[0008] A testing device for the production of baby wipes includes:

[0009] The cover conveying mechanism and the first wet wipe conveying mechanism are arranged side by side. The cover conveying mechanism is used to convey wet wipe covers, and the first wet wipe conveying mechanism is used to convey baby wipes.

[0010] The first housing, wherein both the cover conveying mechanism and the first wet wipe conveying mechanism are disposed within the first housing;

[0011] A capping mechanism is mounted on the inner top wall of the first housing. The capping mechanism is used to grasp and move a wet wipe cap from the cap conveying mechanism onto a baby wipe on the first wet wipe conveying mechanism. The capping mechanism includes:

[0012] The system includes a control host, a robotic arm, and a connecting arm, wherein the connecting arm is mounted in the middle of the control host, and the robotic arm and the control host cooperate to drive the connecting arm.

[0013] A connecting plate is fixedly connected to the lower end of the connecting arm. A second electric push rod is fixedly connected to the end of the connecting plate away from the connecting arm. An adsorption plate is fixedly connected to the end of the second electric push rod away from the connecting plate. An annular outer shell for protecting the second electric push rod and the adsorption plate is also fixedly connected to the connecting plate.

[0014] A microneedle replacement mechanism is fixedly connected to an annular outer shell. The microneedle replacement mechanism uses a tracer gas to replace the air inside the baby wipe packaging. The tracer gas is an inert gas.

[0015] The testing equipment for producing baby wipes also includes:

[0016] The second wet wipe conveying mechanism has a second housing fixedly connected to it. The inner wall of the second housing is equipped with a squeezing plate for squeezing baby wipes. The inner wall of the second housing is also fixedly connected with a plurality of evenly distributed sensors for detecting the content of tracer gas outside the baby wipes.

[0017] A rotary sorting machine and multiple third wet wipe conveying mechanisms are provided. The rotary sorting machine is located at one end of the second wet wipe conveying mechanism. The rotary sorting machine conveys baby wipes to different third wet wipe conveying mechanisms according to the detection results.

[0018] In one or more embodiments of the present invention, an exhaust mechanism is fixedly connected to the second housing, and the exhaust mechanism reduces the content of tracer gas in the second housing by evacuating air.

[0019] The exhaust mechanism includes an air inlet pipe and an air pump. The air inlet pipe is connected to the air inlet of the air pump and communicates with the second housing.

[0020] In one or more embodiments of the present invention, the microneedle replacement mechanism includes a third electric push rod and a first bracket. The third electric push rod is fixedly connected to the annular outer shell through the first bracket. A syringe is detachably installed at the output end of the third electric push rod, and an inner cylinder is fixedly connected inside the syringe.

[0021] A gas flow channel is formed between the syringe and the inner cylinder, and a liquid flow channel is formed inside the inner cylinder. A liquid supply tube matching the liquid flow channel is fixedly connected to the inner cylinder, and a gas supply tube matching the gas flow channel is fixedly connected to the syringe.

[0022] In one or more embodiments of the present invention, the output end of the third electric push rod is provided with a threaded hole, and the tail end of the syringe is fixedly connected with a threaded post that matches the threaded hole, and the threaded post is threadedly connected in the threaded hole.

[0023] In one or more embodiments of the present invention, a negative pressure hole is provided on the contact surface between the annular outer shell and the baby wipe, and the testing equipment for producing baby wipes is provided with a negative pressure mechanism that matches the negative pressure hole.

[0024] In one or more embodiments of the present invention, an adhesive injection mechanism is installed on the annular outer shell, the adhesive injection mechanism being used to spray an adhesive that matches the wet wipe cover, which has an adhesive effect when the wet wipe cover and the baby wet wipe cover are closed.

[0025] The annular shell has an enclosed internal region, and the glue injection mechanism includes a plurality of first nozzles, which are disposed on the side wall of the annular shell, with the spraying ends of the first nozzles facing the internal region.

[0026] The dispensing mechanism also includes a dispensing tube for supplying adhesive to the first nozzle.

[0027] In one or more embodiments of the present invention, a second bracket is fixedly connected to the outer wall of the second housing, and a cylinder is mounted on the second bracket. One end of the cylinder penetrates the second housing, and the output end of the cylinder is fixedly connected to the extrusion plate.

[0028] In one or more embodiments of the present invention, the extrusion plate is provided with a plurality of ventilation holes that match the sensor.

[0029] In one or more embodiments of the present invention, a labeling mechanism is installed between the rotary sorting machine and the air leakage detection mechanism, the labeling mechanism spraying a marking substance according to the air leakage detection result of the baby wipes.

[0030] In one or more embodiments of the present invention, the labeling mechanism includes a third housing, the third housing having a U-shaped structure, and a plurality of second nozzles matching the baby wipes are fixedly connected to the third housing. The labeling mechanism also includes a supply pipe matching the second nozzles, through which the supply pipe supplies the second nozzles.

[0031] Compared with the prior art, the present invention provides a testing device for the production of baby wipes, which uses tracer gas as the detection medium. Compared with traditional detection methods, the detection speed is faster and the detection results are more accurate, avoiding misjudgment and missed detection, and preventing leakage during the production stage from going undetected. Furthermore, it can sort baby wipes based on the detection results, reducing manual intervention.

[0032] It can also prevent minute leaks that are difficult to detect during the production stage and avoid potential safety hazards during the testing stage, which is conducive to maintaining brand reputation and the safety of infants and young children. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of a testing device for producing baby wipes according to one embodiment of the present invention. Figure 1 ;

[0035] Figure 2 This is a schematic diagram of the structure of a testing device for producing baby wipes according to one embodiment of the present invention. Figure 2 ;

[0036] Figure 3 This is a schematic diagram of the adhesive cap mechanism in one embodiment of the present invention;

[0037] Figure 4 This is a partial structural schematic diagram of the adhesive capping mechanism in one embodiment of the present invention;

[0038] Figure 5 for Figure 4 Schematic diagram of the structure at point A in the middle;

[0039] Figure 6 for Figure 4 Schematic diagram of the structure at point B;

[0040] Figure 7 This is a partial cross-sectional view of the adhesive capping mechanism in one embodiment of the present invention;

[0041] Figure 8 This is a schematic diagram of the microneedle replacement mechanism in one embodiment of the present invention;

[0042] Figure 9 This is a partial cross-sectional view of a microneedle replacement mechanism in one embodiment of the present invention;

[0043] Figure 10 for Figure 9 Schematic diagram of the structure at point C;

[0044] Figure 11 This is a partial structural diagram of a testing device for producing baby wipes according to an embodiment of the present invention. Figure 1 ;

[0045] Figure 12 This is a partial structural diagram of a testing device for producing baby wipes according to an embodiment of the present invention. Figure 2 ;

[0046] Figure 13 This is a partial structural diagram of a testing device for producing baby wipes according to an embodiment of the present invention. Figure 3 .

[0047] Explanation of key figure labels:

[0048] 1. Cap conveying mechanism; 2. First wet wipe conveying mechanism; 3. First housing; 4. Cap sealing mechanism; 5. Control host; 6. Robotic arm; 7. Universal connector; 8. First connecting piece; 9. Second connecting piece; 10. First electric push rod; 11. Connecting plate; 12. Second electric push rod; 13. Adsorption plate; 14. Annular outer shell; 1401. Negative pressure hole; 15. Microneedle replacement mechanism; 16. Third electric push rod; 1601. Threaded hole; 17. First bracket; 18. Syringe; 1801. Threaded post; 19. Inner cylinder; 20. Gas flow channel ; 21. Liquid flow channel; 22. Liquid supply pipe; 23. Air supply pipe; 24. Glue injection mechanism; 25. First nozzle; 26. Glue supply pipe; 27. Second wet wipe conveying mechanism; 28. Air leakage detection mechanism; 29. ​​Second housing; 30. Cylinder; 31. Second bracket; 32. Extrusion plate; 3201. Vent hole; 33. Sensor; 34. Exhaust mechanism; 35. Air inlet pipe; 36. Air pump; 37. Labeling mechanism; 38. Third housing; 39. Second nozzle; 40. Supply pipeline; 41. Rotary sorting machine; 42. Third wet wipe conveying mechanism. Detailed Implementation

[0049] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0050] like Figures 1-2 As shown, an embodiment of the present invention provides a testing device for producing baby wipes, comprising a cover conveying mechanism 1 and a first wipe conveying mechanism 2. The cover conveying mechanism 1 is used to convey wipe covers, and the first wipe conveying mechanism 2 is used to convey baby wipes, which are baby wipes packaged by automated packaging equipment. The cover conveying mechanism 1 and the first wipe conveying mechanism 2 are generally arranged side by side. Both the cover conveying mechanism 1 and the first wipe conveying mechanism 2 are located inside a first housing 3. A capping mechanism 4 is installed on the inner top wall of the first housing 3, which can be used to attach the wipe covers located on the cover conveying mechanism 1 to the baby wipes located on the first wipe conveying mechanism 2.

[0051] like Figures 1-3 As shown, the capping mechanism 4 includes a control host 5, a robotic arm 6, and a connecting arm. The control host 5 drives the robotic arm 6, which in turn moves the connecting arm. The connecting arm is telescopic, and its lower end is equipped with a gripping structure for adsorbing the wet wipe cap. The wet wipe cap is gripped by negative pressure. The control host 5 and the robotic arm 6 drive the connecting arm to move to the upper part of the baby wipe, where the length of the connecting arm extends, allowing the wet wipe cap to contact the outer packaging of the baby wipe, thus achieving the installation of the wet wipe cap.

[0052] like Figures 1-3 As shown, the connecting arm includes a universal connector 7. One end of the universal connector 7 is fixedly connected to the middle of the control host 5, and the other end is fixedly connected to a first connector 8. A second connector 9 is slidably connected to the first connector 8. A first electric push rod 10 is installed between the first connector 8 and the second connector 9. The first electric push rod 10 can push the second connector 9 to slide on the first connector 8 to change the position of the gripping structure.

[0053] The above content is common knowledge in this field, therefore, it will not be elaborated further in this embodiment.

[0054] like Figures 3-7As shown, the gripping structure includes a connecting plate 11, which is fixedly connected to the end of the second connecting member 9 away from the first connecting member 8. A second electric push rod 12 is fixedly connected to the middle of the connecting plate 11, and an adsorption plate 13 is fixedly connected to one end of the output shaft of the second electric push rod 12. The adsorption plate 13 adsorbs the wet wipe cover by negative pressure. The second electric push rod 12 has higher precision than the first electric push rod 10. Since the wet wipe cover is fixed to the baby wipe packaging using hot melt adhesive or other types of glue, the higher precision of the second electric push rod 12 allows for precise control of the sealing pressure, avoiding squeezing the baby wipe and preventing excessive pressure that could squeeze out the adhesive, affecting the aesthetics of the connection between the wet wipe cover and the baby wipe packaging. The second electric push rod 12 has less start-stop impact, facilitating the "gentle touch → smooth pressing → slow release" action flow. In mass production, this improves the sealing yield.

[0055] like Figures 3-7 As shown, an annular outer shell 14 matching the adsorption plate 13 is also fixedly connected to the connecting plate 11. The outer diameter of the annular outer shell 14 is larger than the outer diameter of the adsorption plate 13, and the annular outer shell 14 encloses the adsorption plate 13. A negative pressure hole 1401 is provided at the lower end of the annular outer shell 14, and the negative pressure hole 1401 is connected to the negative pressure mechanism. During contact with the baby wipe packaging, it can adsorb part of the upper surface of the baby wipe. When the second electric push rod 12 extends, the wipe cover on the adsorption plate 13 contacts the baby wipe packaging inside the annular outer shell 14. The second electric push rod 12 continues to extend, so that the wipe cover fits the baby wipe packaging. During this process, the annular outer shell 14 can ensure that the force generated by the extension of the second electric push rod 12 will not squeeze the baby wipe inside the baby wipe packaging. During the production stage, the quality of the baby wipes can be guaranteed.

[0056] Of course, in order to further avoid squeezing the baby wipes when sealing the lid, the first electric push rod 10 can rise a certain distance when the negative pressure hole 1401 is adsorbed to the surface of the baby wipe packaging, so that there is a gap between the upper surface of the baby wipe packaging and the baby wipes. This gap ensures that the pressure generated by the second electric push rod 12 when it extends will not be transmitted to the baby wipes.

[0057] like Figures 3-7 As shown, a microneedle replacement mechanism 15 is installed on the side wall of the annular outer shell 14. The microneedle replacement mechanism 15 replaces the tracer gas with the air inside the baby wipes packaging, reducing the air content inside the baby wipes packaging. The tracer gas is generally an inert gas such as nitrogen or helium. Such gases can isolate oxygen, inhibit the growth of microorganisms, and maintain the packaging shape to prevent crushing. Using nitrogen and helium as tracer gases can detect minute leaks with high precision, which helps extend the shelf life. They are also non-toxic and harmless, contributing to the safety and quality of the product.

[0058] Specifically, such as Figures 4 to 10 As shown, the microneedle replacement mechanism 15 includes multiple third electric push rods 16 and a first bracket 17 for fixing the third electric push rods 16. The first bracket 17 is fixedly connected to the outer wall of the annular shell 14, and the third electric push rods 16 are mounted on the first bracket 17. The output end of the third electric push rod 16 passes through the annular shell 14. A syringe 18 is fixedly connected to the output end of the third electric push rod 16. An inner cylinder 19 is fixedly connected inside the syringe 18. A gas flow channel 20 is formed between the syringe 18 and the inner cylinder 19. A liquid flow channel 21 is formed inside the inner cylinder 19. A liquid supply tube 22 matching the liquid flow channel 21 is fixedly connected to the inner cylinder 19, and a gas supply tube 23 matching the gas flow channel 20 is installed on the syringe 18. That is, high-viscosity, anti-flow instant adhesive can be delivered into the inner cylinder 19 through the liquid supply tube 22. This type of instant adhesive is commonly available on the market, and in this embodiment, no further details about instant adhesives will be provided.

[0059] Generally, the diameter of the syringe 18 is between 0.1 and 3 mm. Of course, the diameter of the syringe 18 can be changed according to actual production needs. With the upgrading of instant adhesive, the diameter of the syringe 18 can also be increased. As long as the instant adhesive can be prevented from piercing the micropores of the baby wipe packaging through the syringe 18 and entering, so as not to affect the quality of the baby wipes.

[0060] like Figure 10 As shown, a threaded post 1801 is fixedly connected to the tail end of the syringe 18, and a threaded hole 1601 matching the threaded post 1801 is provided on the output end of the third electric actuator 16. The threaded post 1801 and the threaded hole 1601 are threadedly engaged. That is, the third electric actuator 16 and the syringe 18 are detachably installed with a threaded connection to facilitate the replacement of the syringe 18.

[0061] In this embodiment, there are two sets of three third electric push rods 16, arranged opposite each other on the side wall of the annular outer shell 14. One set of syringes 18 is used to extract air from the baby wipe packaging, while the other set is used to fill the baby wipe packaging with tracer gas. A pulsed high-pressure mode is used, applying a pressure of 0.2-0.3 MPa instantaneously for 0.1-1 seconds. The tracer gas enters the packaging at high speed and is extracted from the gap on the opposite side, forming a directional flow field of "nitrogen in → air out", which quickly replaces the internal air.

[0062] After air replacement is complete, the third electric push rod 16 retracts. At the instant the syringe 18 loses contact with the baby wipe packaging, the inner cylinder 19 sprays instant adhesive onto the hole made by the syringe 18 in the baby wipe packaging. The instant adhesive seals the hole, minimizing leakage of the tracer gas inside the baby wipe packaging. Then, the second electric push rod 12 attaches the wipe cap coated with hot melt adhesive to the surface of the baby wipe packaging. The hot melt adhesive covers the instant adhesive, forming a secondary seal to prevent air leakage from the hole. The entire process can be completed within 0.5-1.5 seconds. Outside air has almost no time to enter the packaging through the tiny aperture. This "instant operation → immediate sealing" minimizes the intrusion of outside air, ensuring that the tracer gas content inside the baby wipe packaging reaches over 90%.

[0063] As mentioned above, the wet wipe cover is bonded to the baby wipe packaging with hot melt adhesive or other glue. In existing technology, it requires the coordinated operation of the main unit 5, the robotic arm 6, and the connecting arm to move the wet wipe cover to a specialized glue spray nozzle, where glue is sprayed onto the bonding surface, and then the wet wipe cover is moved onto the top of the baby wipe packaging. This method is not only time-consuming, but also has a time interval between glue spraying and bonding. Hot melt adhesive is prone to reduced adhesion due to cooling, especially at low temperatures, resulting in weak adhesion and easy detachment. To solve this problem, such as Figures 3-7 As shown, an adhesive injection mechanism 24 is provided on the annular outer shell 14. The adhesive injection mechanism 24 sprays glue evenly onto the surface of the baby wipe packaging bag to match the wipe cover. The glue spraying is performed at the same time as the second electric push rod 12 extends, so the two are almost simultaneous, saving the time of separate glue spraying and improving production efficiency.

[0064] Specifically, such as Figures 3-7 As shown, the glue dispensing mechanism 24 includes multiple first nozzles 25 and a glue supply tube 26 for supplying glue to the first nozzles 25. The multiple first nozzles 25 are connected in parallel, enabling them to spray glue simultaneously at the same time, and the amount sprayed is exactly matched to the size and position of the wet wipe cap. This achieves bonding between the wet wipe cap and the baby wipe packaging.

[0065] After the wet wipe cap is successfully attached, the leak detection phase begins. Figures 11-13As shown, leakage detection is mainly performed by the leak detection mechanism 28, which is installed on the second wet wipe conveying mechanism 27 behind the first wet wipe conveying mechanism 2. After the baby wipe packaging on the first wet wipe conveying mechanism 2 is capped, it is conveyed to the second wet wipe conveying mechanism 27. The second wet wipe conveying mechanism 27 is a roller conveyor line, meaning it has a conveyor belt on its upper part. The leak detection mechanism 28 mainly includes a second housing 29, which is mounted on the second wet wipe conveying mechanism 27. Multiple sensors 33 are evenly arranged on the inner wall of the second housing 29. A mounting plate is installed at the lower end of the second wet wipe conveying mechanism 27, and multiple sensors 33 are also evenly arranged on the mounting plate. The gaps between the multiple sensors 33 and the baby wipes are the same. That is, the sensors 33 are arranged in a matrix, directly covering the entire surface of the baby wipe packaging.

[0066] In this embodiment, nitrogen is used as the tracer gas, and the sensor 33 is a non-dispersive infrared (NDIR) nitrogen sensor. Its principle is to utilize the absorption characteristics of nitrogen for infrared light of a specific wavelength, which is highly selective and not affected by water vapor or dust.

[0067] Generally, a photoelectric sensor needs to be installed at the entrance of the second housing 29. When the baby wipe package enters the second housing 29, data acquisition is triggered.

[0068] When the baby wipes packaging is inside the second housing 29, the sensor 33 detects nitrogen leakage. Since the sensor 33 is positioned on four sides (top, bottom, left, and right), corresponding to the top, bottom, left, and right sides of the baby wipes packaging, there are no sensors 33 at the front and rear. Therefore, when a leak occurs at the front, the left and right sensors 33 are checked for synchronous spikes appearing within a very short time. For a leak at the rear, the left and right sensors 33 at the rear of the baby wipes packaging are checked for synchronous spikes. Of course, for more precise detection of the leak location by the sensor 33, a sliding mounting plate can be installed on the second housing 29. This mounting plate is equipped with sensors 33 that match the front and rear ends of the baby wipes packaging, allowing for precise detection of leak locations at the front and rear ends.

[0069] To further detect minute leaks, such as Figures 11-13 As shown, a second bracket 31 is mounted on the second housing 29, and a cylinder 30 is mounted on the second bracket 31. The output end of the second bracket 31 passes through the second housing 29, and a squeezing plate 32 is fixedly connected to the output end of the cylinder 30. When the cylinder 30 extends, it works with the squeezing plate 32 to squeeze the baby wipe packaging. Through a certain amount of squeezing, the micropores are forced to passively leak, thereby improving the detection accuracy.

[0070] like Figures 11-13As shown, the extrusion plate 32 has multiple vent holes 3201. The vent holes 3201 allow the tracer gas to be detected smoothly by the sensor 33. The thickness of the extrusion plate 32 should not be too thick to avoid affecting the detection accuracy.

[0071] like Figure 11 As shown, an exhaust mechanism 34 is installed on the second housing 29. When the tracer gas content in the exhaust mechanism 34 is high, the exhaust mechanism 34 is used to initialize the air inside the second housing 29 to prevent the residual missing gas from affecting the detection results. The exhaust mechanism 34 includes an air pump 36 and an air inlet pipe 35 installed at the air inlet of the air pump 36. The air inlet pipe 35 communicates with the space enclosed by the second housing 29. Therefore, when the air pump 36 is started, it can remove the gas inside the second housing 29.

[0072] After the inspection is completed, the marking mechanism 37 at the rear end of the second wet wipe conveying mechanism 27 will spray a mark on the surface of the baby wipe packaging according to the inspection results. This mark will circle the location of the leak, rather than placing it on the leak hole. The circled area can then be manually repaired to seal the leak before further processing. For baby wipe packaging that cannot be repaired, it will pass directly through the marking mechanism 37, which will not mark the packaging.

[0073] Specifically, such as Figures 11-13 As shown, the marking mechanism 37 includes a third housing 38, which has a U-shaped structure and is fixedly connected to the second wet wipe delivery mechanism 27. A second nozzle 39 is provided along the third housing 38, and the marking mechanism 37 also includes a supply pipe 40 for supplying the second nozzle 39. The second nozzle 39 can spray markings onto the baby wipe packaging.

[0074] like Figures 11-13 As shown, a rotary sorting machine 41 is also provided at the rear end of the second wet wipe conveying mechanism 27. A third wet wipe conveying mechanism 42 matching the rotary sorting machine 41 is provided on the outside of the rotary sorting machine 41. The rotary sorting machine 41 conveys good and defective products to different third wet wipe conveying mechanisms 42 to realize the detection and sorting of baby wipes without manual intervention, which helps to improve the production efficiency of baby wipes.

[0075] In this embodiment, the capping mechanism and the microneedle replacement mechanism 15 are integrated, which can easily lead to situations where leaks are discovered after capping. If the defect rate increases, the resulting costs also rise. Therefore, the detection equipment also includes an intelligent analysis module. This module can identify process problems based on the detection results of the leak detection mechanism 28 and provide solutions accordingly. If the yield rate reaches a certain threshold, the overall production line efficiency will be reduced, and an alarm will be issued to minimize losses caused by the defect rate. Alternatively, to address this issue, leak detection can be performed before capping, which can also reduce losses due to the defect rate.

[0076] When using this invention, as Figures 1-10 As shown, firstly, the first wet wipe conveying mechanism 2 conveys baby wipes, the cover conveying mechanism 1 conveys the wet wipe cover, and then the adhesive cover mechanism 4 installs the wet wipe cover onto the first wet wipe conveying mechanism 2. Before installing the wet wipe cover, the microneedle replacement mechanism 15 replaces the air inside the baby wipe packaging with tracer gas by piercing, and seals the piercing hole so that the tracer gas can be retained inside the baby wipe packaging. After the wet wipe cover is installed on the baby wipe packaging, it is continued to be conveyed to the leakage detection mechanism 28. The squeezing plate 32 and the cylinder 30 work together to squeeze the baby wipe packaging. If the baby wipe packaging has micropores, the squeezing forces the baby wipe packaging to passively leak air. The sensor 33 detects the tracer gas. If there is no tracer gas, the packaging does not leak air. If there is tracer gas, the packaging leaks air. According to the detection result, the rotary sorting machine 41 conveys the packaging to different third wet wipe conveying mechanisms 42, conveying the corresponding baby wipes to the corresponding positions. Baby wipes that do not leak proceed to the next step, while leaked baby wipes are sent to repair or other processes.

[0077] This invention utilizes tracer gas replacement to not only expel air from the inside of baby wipes packaging but also, after filling with tracer gas, extend the shelf life of the baby wipes in their unopened state, thus improving their quality. Furthermore, the tracer gas, in conjunction with sensor 33, can detect micropore leaks. The detection results are more accurate than other methods, ensuring the quality of the baby wipes at the time of manufacture and reducing or even preventing problems such as seal failure during storage or transportation caused by minute leaks.

[0078] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0079] 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 testing device for the production of baby wipes, characterized in that, include: The cover conveying mechanism and the first wet wipe conveying mechanism are arranged side by side. The cover conveying mechanism is used to convey wet wipe covers, and the first wet wipe conveying mechanism is used to convey baby wipes. The first housing, wherein both the cover conveying mechanism and the first wet wipe conveying mechanism are disposed within the first housing; A capping mechanism is mounted on the inner top wall of the first housing. The capping mechanism is used to grasp and move a wet wipe cap from the cap conveying mechanism onto a baby wipe on the first wet wipe conveying mechanism. The capping mechanism includes: The system includes a control host, a robotic arm, and a connecting arm, wherein the connecting arm is mounted in the middle of the control host, and the robotic arm and the control host cooperate to drive the connecting arm. A connecting plate is fixedly connected to the lower end of the connecting arm. A second electric push rod is fixedly connected to the end of the connecting plate away from the connecting arm. An adsorption plate is fixedly connected to the end of the second electric push rod away from the connecting plate. An annular outer shell for protecting the second electric push rod and the adsorption plate is also fixedly connected to the connecting plate. A microneedle replacement mechanism is fixedly connected to an annular outer shell. The microneedle replacement mechanism uses a tracer gas to replace the air inside the baby wipe packaging. The tracer gas is an inert gas. The testing equipment for producing baby wipes also includes: The second wet wipe conveying mechanism has a second housing fixedly connected to it. The inner wall of the second housing is equipped with a squeezing plate for squeezing baby wipes. The inner wall of the second housing is also fixedly connected with a plurality of evenly distributed sensors for detecting the content of tracer gas outside the baby wipes. A rotary sorting machine and multiple third wet wipe conveying mechanisms are provided. The rotary sorting machine is located at one end of the second wet wipe conveying mechanism. The rotary sorting machine conveys baby wipes to different third wet wipe conveying mechanisms according to the detection results. The connecting plate is also fixedly connected to an annular shell that matches the adsorption plate. The outer diameter of the annular shell is larger than the outer diameter of the adsorption plate, and the annular shell encloses the adsorption plate. A negative pressure hole is provided at the lower end of the annular outer shell, and the negative pressure hole is connected to the negative pressure mechanism; During contact with the baby wipes packaging, the negative pressure hole can adsorb part of the upper surface of the baby wipes. When the second electric push rod extends, the wipe cover on the adsorption plate contacts the baby wipes packaging inside the annular shell. The second electric push rod continues to extend, so that the wipe cover fits the baby wipes packaging. During this process, the annular shell can ensure that the force generated by the extension of the second electric push rod will not squeeze the baby wipes inside the baby wipes packaging.

2. The testing equipment for producing baby wipes according to claim 1, characterized in that, An exhaust mechanism is fixedly connected to the second housing, which reduces the content of tracer gas inside the second housing by evacuating air. The exhaust mechanism includes an air inlet pipe and an air pump. The air inlet pipe is connected to the air inlet of the air pump and communicates with the second housing.

3. The testing equipment for producing baby wipes according to claim 1, characterized in that, The microneedle replacement mechanism includes a third electric push rod and a first bracket. The third electric push rod is fixedly connected to the annular outer shell through the first bracket. A syringe is detachably installed at the output end of the third electric push rod, and an inner cylinder is fixedly connected inside the syringe. A gas flow channel is formed between the syringe and the inner cylinder, and a liquid flow channel is formed inside the inner cylinder. A liquid supply tube matching the liquid flow channel is fixedly connected to the inner cylinder, and a gas supply tube matching the gas flow channel is fixedly connected to the syringe.

4. The testing equipment for producing baby wipes according to claim 3, characterized in that, The output end of the third electric push rod is provided with a threaded hole, and the tail end of the syringe is fixedly connected with a threaded post that matches the threaded hole, and the threaded post is threadedly connected in the threaded hole.

5. A testing device for producing baby wipes according to any one of claims 1 to 4, characterized in that, The annular outer shell is equipped with an adhesive injection mechanism, which is used to spray out an adhesive that matches the wet wipe cover, and plays an adhesive role when the wet wipe cover and the baby wet wipe cover are closed. The annular shell has an enclosed internal region, and the glue injection mechanism includes a plurality of first nozzles, which are disposed on the side wall of the annular shell, with the spraying ends of the first nozzles facing the internal region. The dispensing mechanism also includes a dispensing tube for supplying adhesive to the first nozzle.

6. The testing equipment for producing baby wipes according to claim 1, characterized in that, A second bracket is fixedly connected to the outer wall of the second housing, and a cylinder is installed on the second bracket. One end of the cylinder penetrates the second housing, and the output end of the cylinder is fixedly connected to the extrusion plate.

7. A testing device for producing baby wipes according to claim 1 or 6, characterized in that, The extrusion plate has multiple ventilation holes that match the sensors.

8. The testing equipment for producing baby wipes according to claim 1, characterized in that, A labeling mechanism is installed between the rotary sorting machine and the air leakage detection mechanism. The labeling mechanism sprays a marking substance based on the air leakage detection result of the baby wipes.

9. A testing device for producing baby wipes according to claim 8, characterized in that, The labeling mechanism includes a third housing, which has a U-shaped structure. Multiple second nozzles that match the baby wipes are fixedly connected to the third housing. The labeling mechanism also includes a supply pipe that matches the second nozzles, through which the second nozzles are supplied.

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