Three-row synchronous automatic production system for wet tissues

Abstract

The invention provides a wet tissue three-row synchronous automatic production system, and belongs to the technical field of wet tissue production. The raw material feeding device is mounted on the equipment frame, and the raw material feeding device is used for feeding and supplementing non-woven fabrics; the advancing direction of the non-woven fabric is defined as the right side; the traction device is used for pulling the non-woven fabric to advance; the slitting device is used for slitting the non-woven fabric into a plurality of non-woven fabric strips, and the slitting device is arranged on the right side of the raw material feeding device; the buffer device is improved, whether the three rows of non-woven fabrics are synchronous or not is judged according to pressure changes, the advancing speed of the non-woven fabrics is adjusted in time through the buffer device, and synchronous operation of the three rows of non-woven fabrics is achieved; the cost of the device is lower, three motors do not need to be arranged to control and adjust the three rows of non-woven fabrics respectively, and the practicability is better; by improving the cloth receiving mechanism, reinforcing the motor and the roll shaft and the like, the running speed of the equipment is increased, and the production efficiency is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wet wipe production, and particularly relates to a three-row synchronous automatic production system for wet wipes. Background Art

[0002] In the field of personal care and hygiene products, the market demand for wet wipes shows a continuous growth trend. From daily cleaning to hygiene maintenance in special scenarios, wet wipes are widely used in many industries such as household, medical, catering, and tourism due to their convenience and practicality. To meet the growing market demand for wet wipes and improve production efficiency, the research and innovation of automatic wet wipe production lines are crucial.

[0003] With the increasing market demand for wet wipes, how to improve production capacity is an urgent problem to be solved currently. At present, the production of wet wipes has transitioned from traditional semi-automatic production to fully automatic production. To improve production capacity, it mainly starts from two aspects. One is to expand the production line, and the other is to improve the production efficiency of the production line.

[0004] Expanding the production line is the most direct way to increase production capacity. However, expanding the production line means that new equipment needs to be purchased, the factory building needs to be expanded, etc., and the investment is too large, which is difficult for many enterprises to afford. The increase in costs is also likely to affect the product pricing and is not conducive to the development of enterprises.

[0005] Therefore, the best solution is to improve the production efficiency of the production line. In this way, the production capacity can be increased without or with less expansion of the enterprise.

[0006] The invention patent with the application number 2021112365105 discloses an automatic wet wipe production line. This patent is for our company's previous generation of products. This solution can run synchronously in two lines, producing two packs of wet wipes at a time, improving production efficiency. In addition, during the process of transporting wet wipe raw materials, the wet wipe raw materials can first enter the cutting system to form single-piece wet wipes, and then pass through the humidifying system. When transporting the single-piece wet wipes, it can avoid pulling the humidified wet wipe raw materials, thus avoiding the situation of pulling and breaking of the humidified wet wipe raw materials.

[0007] In order to further increase the output of wet wipes, our company subsequently started the research and development of a three-row synchronous automatic production line. However, after changing the double-row production line to a three-row production line, many problems have emerged. After the wet wipe production line becomes three rows, the synchronization problem becomes a major problem. For the three rows of non-woven fabrics, once there is a slight speed deviation in one of them, with the high-speed operation of the equipment, a large amount of deviation will occur in the three rows of non-woven fabrics in a very short time. In addition, when connecting the fabrics, due to the non-synchronization of the three non-woven fabrics, problems occur in connecting the fabrics, and it is necessary to stop the machine for processing, affecting normal production. Therefore, how to ensure the stable operation of the three-row synchronous automatic production line is the key problem to be solved currently. Summary of the Invention

[0008] The present invention provides a wet wipe three - row synchronous automated production system to solve the technical problem that the three - row non - woven fabrics are prone to being asynchronous in the prior art.

[0009] To solve the above problems, the wet wipe three - row synchronous automated production system provided by the present invention adopts the following technical solutions: It includes an equipment rack; A raw material feeding device, which is installed on the equipment rack. The raw material feeding device is used for feeding and replenishing non - woven fabrics. Define the advancing direction of the non - woven fabric as the right side; A traction device, which is used for pulling the non - woven fabric to advance; A slitting device, which is used for slitting the non - woven fabric into several non - woven fabric strips. The slitting device is arranged on the right side of the raw material feeding device; A buffer device, which is used for buffering to facilitate cloth changing. The buffer device is arranged on the right side of the slitting device; A deviation rectifying device, which is used for rectifying the deviation of the non - woven fabric. The deviation rectifying device is arranged on the right side of the slitting device A sheet folding device, which is used for folding the non - woven fabric. The sheet folding device is arranged below the deviation rectifying device; A liquid adding device, which is used for adding liquid to the non - woven fabric. The liquid adding device includes a liquid adding mechanism and a liquid supply mechanism. The liquid adding mechanism is arranged on the right side of the deviation rectifying and sheet folding device; A cutting device, which is used for cutting the non - woven fabric. The cutting device is arranged on the right side of the liquid adding mechanism; The slitting device includes two cutting knives, which slit the non - woven fabric into three non - woven fabric strips; The buffer device includes a number of fixed rollers and a number of adjusting rollers. The fixed rollers and the adjusting rollers are arranged alternately in the up - down direction. Below the adjusting rollers, there is a lifting cylinder for driving the adjusting rollers to lift and lower. Between the lifting cylinder and the adjusting rollers, there is also a pressure sensor for detecting the pressure change of the adjusting rollers.

[0010] By adopting the above - mentioned technical solutions, it is ensured that the three - row non - woven fabrics remain synchronous during operation. The buffer device is provided with a pressure sensor. When one of the non - woven fabrics has a speed change resulting in asynchrony, it will be reflected in the force. For example, when the speed of one of the non - woven fabrics changes, the degree of adhesion between the non - woven fabric and the roller shaft will also change. When the external control system detects the pressure change of the pressure sensor, it drives the lifting cylinder to slightly lower. According to the friction formula F = μN (where F is the frictional force, μ is the coefficient of friction, and N is the normal pressure), the tension is increased so that the normal pressure of the non - woven fabric on the fixed rollers and the adjusting rollers increases, thereby increasing the frictional force and hindering the advancement of the non - woven fabric, reducing the speed. As the lifting cylinder continues to drive the adjusting rollers to tighten the other non - woven fabrics, the degree of adhesion of the three non - woven fabrics to the adjusting rollers gradually becomes consistent, and thus the three - row synchrony is maintained. After the three - row non - woven fabrics are synchronous, the buffer device slowly resets.

[0011] It should be noted that the above adjustment is mainly fine-tuning. At the beginning of the speed deviation of the three non-woven fabrics, the running speeds of the three non-woven fabrics can be kept consistent through the above fine-tuning method, avoiding further increase of the differential speed, thereby greatly improving the stability of the equipment operation. (Since the equipment runs at a high speed, if the deviation is too large and the synchronization fails to be adjusted in time, the equipment should be stopped immediately to avoid the rapid increase of the differential speed of the three non-woven fabrics in a short time). As a further improvement, the raw material feeding device includes two feeding rollers for supporting non-woven fabrics, and a cloth connecting device for connecting non-woven fabrics is arranged above the two feeding rollers.

[0012] As a further improvement, an auxiliary driving and rotating device for assisting the rotation of the non-woven fabric roll is arranged below the feeding roller.

[0013] By adopting the above technical solution, the stable supply of non-woven fabrics is ensured.

[0014] As a further improvement, a vertically arranged guiding track is arranged below the fixed roller, and a mounting plate is slidably assembled on the guiding track, and the adjusting rollers are evenly distributed on the mounting plate in the horizontal direction.

[0015] By adopting the above technical solution, the sliding precision of the adjusting rollers can be improved. The guiding track and the mounting plate cooperate to enable the adjusting rollers to slide precisely in the vertical direction during the lifting process, ensuring accurate control of the displacement of the adjusting rollers.

[0016] As a further improvement, the liquid adding mechanism includes a spray head for spraying liquid medicine on the non-woven fabric and a soaking tank for storing liquid medicine to soak and add liquid medicine to the non-woven fabric, so that users can choose the way of adding liquid medicine according to their needs.

[0017] By adopting the above technical solution, there are two liquid adding methods at the same time, which is convenient for the manufacturer to choose different liquid adding methods according to different requirements.

[0018] Compared with direct soaking, spraying is to spray liquid medicine according to demand and in a quantitative manner, which can accurately control the usage amount of liquid medicine and avoid waste of a large amount of liquid medicine. Especially for some expensive liquid medicines, this method can reduce production costs; in addition, the liquid medicine has less contact with the external environment during the spraying process, and the wet wipes do not need to share a soaking tank, reducing the possibility of liquid medicine being contaminated. However, the precision control of spraying medicine is relatively more difficult and requires multiple debugging, and it is not as convenient and direct as soaking.

[0019] The advantage of soaking is that the liquid medicine fully penetrates, and the wet wipes are completely immersed in the liquid medicine, which can ensure that the liquid medicine fully penetrates into every part of the wet wipes, whether on the surface or inside, and can evenly absorb the liquid medicine. It is simple to operate and suitable for small-scale production. However, the disadvantage of soaking is that the liquid medicine is relatively wasted, and the liquid medicine in the immersion tank is in contact with the external environment for a long time, and is easily contaminated by dust, microorganisms, etc. in the air, which affects the quality and stability of the liquid medicine.

[0020] As a further improvement, the cutting device includes a cutting roller assembly for cutting the non-woven fabric into small pieces, a cloth receiving mechanism for receiving and transferring the non-woven fabric is provided below the cutting roller assembly, and a feeding mechanism for conveying the non-woven fabric is also provided at the lower right side of the cloth receiving mechanism.

[0021] By adopting the above technical solution, the cutting, stacking, blanking and transportation of non-woven fabrics can be achieved.

[0022] As a further improvement, the cloth-joining mechanism comprises an upper cloth-joining mechanism and a lower cloth-joining mechanism cooperating with the upper cloth-joining mechanism, the lower cloth-joining mechanism comprises a lower cloth-joining assembly which can be lifted and lowered in the up-and-down direction, the lower cloth-joining assembly comprises a plurality of cloth-joining plates arranged at intervals, and avoidance gaps are formed between the cloth-joining plates; The feeding mechanism includes a belt conveying mechanism, an embossing mechanism and a compensating conveying mechanism. The belt conveying mechanism has a plurality of conveying belts arranged at intervals. The receiving plate is located in the gap between the conveying belts, so that the lower receiving component can pass through the belt conveying mechanism in the up and down directions, so that the non-woven fabric received by the lower receiving component can be smoothly transferred to the belt conveying mechanism.

[0023] By adopting the above technical solution, the stacked nonwoven fabrics can be accurately and stably dropped onto the belt feeding mechanism. At present, the fabric receiving mechanism adopts a structure of two alternating operations, that is, after one of the fabric receiving mechanisms receives the fabric, it moves down to the top of the feeding mechanism (while the other fabric receiving mechanism moves to the bottom of the cutting roller assembly to receive the fabric), and the fabric receiving mechanism shrinks quickly to make the stacked nonwoven fabrics fall onto the feeding mechanism.

[0024] This method can basically meet the needs. Since the feeding mechanism is always running, when the stacked non-woven fabrics fall onto the feeding mechanism through free fall, there will be a certain inertia, which makes the stacked non-woven fabrics easy to shift. A small amount of shift generally does not affect the packaging of wet wipes, but it is easy to affect the embossing effect. However, this structure also restricts production efficiency. For example, if the running speed of the feeding mechanism and other structures is to be increased, the stacked non-woven fabrics will shift more. In addition, if the double-row non-woven fabrics are changed to three-row non-woven fabrics, the amount of material dropped each time will increase, and it is more likely that the non-woven fabrics will shift too much, making it difficult for the current structure to meet the three-line production line.

[0025] The present invention has an upper cloth-connecting mechanism, a lower cloth-connecting mechanism and a belt conveyor mechanism that cooperate with each other. The lower cloth-connecting assembly of the lower cloth-connecting mechanism has an avoidance gap and can pass through the belt conveyor mechanism composed of multiple conveying belts. When the lower cloth-connecting assembly descends, the stacked non-woven fabrics can be smoothly transferred to the belt conveyor mechanism. Compared with the existing free fall, the deviation of the stacked non-woven fabrics can be greatly reduced.

[0026] As a further improvement, the upper fabric receiving mechanism comprises an upper fabric receiving assembly cooperating with the lower fabric receiving assembly, the upper fabric receiving assembly having a plurality of fabric receiving strips arranged at intervals, the fabric receiving strips and the fabric receiving plates being arranged in an alternating manner; The upper material receiving assembly is also connected to a translation mechanism for driving the upper material receiving assembly to move left and right and a lifting mechanism for driving the upper material receiving assembly to move up and down, so that the upper material receiving assembly can smoothly transfer the received non-woven fabric to the lower material receiving assembly.

[0027] By adopting the above technical solution, the upper cloth receiving mechanism, the lower cloth receiving mechanism and the belt conveyor mechanism cooperate with each other to quickly realize the cloth receiving and transfer actions. The specific steps are as follows: The cut nonwoven fabric falls on the upper material assembly; The upper material receiving component moves downward and leftward, and the non-woven fabric is transferred to the lower material receiving component; The lower material receiving assembly gradually descends as the number of nonwoven fabrics stacked increases; at the same time, the upper material receiving assembly moves to the left side below the cutting roller assembly to prepare for receiving the material; When the amount of non-woven fabrics reaches the set value, the lower material receiving assembly descends, and the non-woven fabrics are transferred to the belt conveyor mechanism. At this time, the upper material receiving assembly moves to the bottom of the cutting roller assembly to receive the fabrics. Repeat the above steps afterwards.

[0028] As a further improvement, a limiting track is provided under the lower material connecting assembly, and the lower material connecting assembly is fixedly connected to a limiting block. The limiting block is slidably assembled on the limiting track. The limiting block is hinged with a connecting rod, and the other end of the connecting rod is hinged to the eccentric wheel, so that the eccentric wheel is driven to rotate by a motor, thereby driving the lower material connecting assembly to rise and fall in the up and down directions.

[0029] The above structure is relatively stable, not prone to failure, and easy to adjust the lifting frequency. It is better to adjust the frequency of the lower cloth receiving mechanism according to other devices to adapt it to the production line.

[0030] As a further improvement, the compensating conveying mechanism is hinged to the belt conveying mechanism, and an angle adjusting cylinder is hinged below the compensating conveying mechanism to adjust the inclination angle of the compensating conveying mechanism.

[0031] By adopting the above technical solution, the adaptability of the present invention can be improved. After the non-woven fabric undergoes the above steps such as liquid addition, cutting, and stacking, it has already become a finished wet wipe. Next, it needs to be transferred to the packaging system for packaging. There may be a certain height deviation (error) between the conveying structure of the packaging system and the compensation conveying mechanism. At this time, by adjusting the inclination angle of the compensation conveying mechanism, the height of the end of the compensation conveying mechanism can be adjusted to accurately dock with the external packaging system.

[0032] The beneficial effects of the above technical solution of the present invention are as follows: 1. By using the buffer device and improving it on the buffer device, according to the pressure change, it is judged whether the three rows of non-woven fabrics are synchronized, and the running speed of the non-woven fabrics is adjusted in time through the buffer device to realize the synchronous operation of the three rows of non-woven fabrics.

[0033] Moreover, the cost of this device is lower, and there is no need to set three motors to control and adjust the three rows of non-woven fabrics respectively, and the practicability is better.

[0034] 2. The liquid addition device of the present invention can select different liquid addition methods according to the actual situation, better meeting the needs of different manufacturers.

[0035] 3. The cloth receiving mechanism of the present invention can accurately and smoothly transfer the stacked non-woven fabrics onto the belt conveying mechanism, and there is basically no situation of misalignment or deviation of the stacked non-woven fabrics during the transfer process, better adapting to the three-row production line.

[0036] 4. The present invention greatly improves the production efficiency of the wet wipe production line in two aspects.

[0037] On the one hand, by improving the double-row non-woven fabric into a three-row non-woven fabric and re-designing the three-row non-woven fabric, the problems of the three-row wet wipe production line are solved one by one. The production is improved from producing two packages at a time to producing three packages at a time, directly enhancing the production efficiency of wet wipes.

[0038] On the other hand, by improving the cloth receiving mechanism and strengthening aspects such as the motor and roller shaft, the running speed of the equipment is increased, thereby improving the production efficiency. The strengthening of components such as the motor and roller shaft can ensure that the production line will not have problems such as loose parts or vibration during high-speed operation, ensuring the stable operation of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] By referring to the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present invention will become readily understandable. In the drawings, several embodiments of the present invention are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 is a schematic structural diagram of the three-row synchronous automated production system for wet wipes of the present invention; Figure 2 The front view of the three-row synchronous automatic production system for wet wipes of the present invention; Figure 3 The structural schematic diagram of the buffer device of the three-row synchronous automatic production system for wet wipes of the present invention; Figure 4 The structural schematic diagram of the cloth receiving mechanism of the three-row synchronous automatic production system for wet wipes of the present invention; Figure 5 is Figure 1 The enlarged view of part A of

[0040] Explanation of reference numerals: 100, raw material feeding device; 110, auxiliary driving and rotating device; 120, feeding roller; 130, cloth receiving device; 200, traction device; 300, slitting device; 400, buffer device; 410, fixed roller; 420, guiding track; 430, mounting plate; 440, adjusting roller; 450, cylinder seat; 500, deviation rectifying device; 600, folding device; 700, liquid adding device; 710, liquid adding mechanism; 711, spray head; 712, dipping tank; 720, liquid supply mechanism; 800, cutting device; 810, cutting roller knife assembly; 820, cloth receiving mechanism; 821, lower cloth receiving mechanism; 8211, lower material receiving assembly; 8212, limiting block; 8213, limiting track; 8124, connecting rod; 8215, eccentric wheel; 822, upper cloth receiving mechanism; 8221, upper material receiving assembly; 8222, translation mechanism; 8223, lifting mechanism; 830, feeding mechanism; 831, embossing mechanism; 832, belt conveying mechanism; 833, compensation conveying mechanism; 834, angle adjusting mechanism. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Currently, in order to further increase the production output of wet wipes, our company subsequently started the research and development of a three-row synchronous automatic production line. However, after changing the double-row production line to a three-row production line, many problems have emerged. Such as the synchronization problem of the three rows of non-woven fabrics, the cloth receiving problem of the three-row production line, etc.

[0043] Regarding the above problems, while solving the stable operation of the three-row production line, the present invention also improves the operating speed of the equipment and further improves the production efficiency.

[0044] 1. Synchronization problem: In the initial solution, three motors were considered to adjust three non-woven fabrics respectively to achieve synchronous operation of the three non-woven fabrics. However, this increased the cost significantly. Subsequently, we noticed that the change in the speed of the non-woven fabric would be directly reflected in its contact with the fixed roller or the adjusting roller. That is, the speed of the non-woven fabric would directly affect the degree of adhesion between the non-woven fabric and the fixed roller or the adjusting roller. At this time, the force exerted by the non-woven fabric on the fixed roller or the adjusting roller would also change. Therefore, we determined whether the speeds of the three non-woven fabrics were synchronized by detecting the change in the force on the adjusting roller. When the external control system detects a change in the pressure of the pressure sensor, it drives the lifting cylinder to descend slightly. The tensioning increases the normal pressure of the non-woven fabric on the fixed roller and the adjusting roller, thereby increasing the frictional force and hindering the progress of the non-woven fabric, reducing the speed. As the lifting cylinder continues to drive the adjusting roller to gradually tighten the other non-woven fabrics, the degree of adhesion between the three non-woven fabrics and the adjusting roller gradually becomes consistent, and then the three rows are kept synchronized. After the three rows of non-woven fabrics are synchronized, the buffer device slowly resets.

[0045] 2. Cloth receiving problem: The existing cloth receiving mechanism makes the stacked non-woven fabrics lack support and then fall onto the feeding mechanism by rapid extraction. However, as the double-row production line is changed to a triple-row production line, the number of non-woven fabrics falling increases, and the stacked non-woven fabrics are more likely to shift. Moreover, the existing cloth receiving mechanism directly limits the operating speed of the feeding mechanism.

[0046] The lower cloth receiving component of the lower cloth receiving mechanism of the present invention has an avoidance gap and can pass through the belt conveying mechanism composed of multiple conveyor belts. When the lower cloth receiving component descends, the stacked non-woven fabrics can be smoothly transferred onto the belt conveying mechanism. Compared with the existing free fall, the situation of the stacked non-woven fabrics shifting can be significantly reduced.

[0047] 3. Equipment speed increase: By improving the cloth receiving mechanism and strengthening the motor, roller shaft, etc., the operating speed of the equipment is increased, thereby improving production efficiency. The improvement of the cloth receiving mechanism enables it to adapt to a production line with a higher speed; the strengthening of components such as the motor and roller shaft can ensure that the production line will not have problems such as loose parts or vibration during high-speed operation, and ensure the stable operation of the production line.

[0048] After introducing the basic principle of the present invention, the following specifically introduces various non-limiting implementation manners of the present invention. The number of any element in the drawings is for illustration rather than limitation, and any naming is only used for distinction and does not have any limiting meaning.

[0049] The following elaborates on the principle and spirit of the present invention in detail with reference to several representative implementation manners of the present invention.

[0050] Example 1 of the wet wipe triple-row synchronous automatic production system provided by the present invention: As Figures 1 - 5As shown, the wet wipes three-row synchronous automated production system includes an equipment rack, and a raw material feeding device 100, a traction device 200, a slitting device 300, a buffer device 400, a deviation correction device 500, a folding device 600, a liquid adding device 700 and a cutting device 800 arranged in sequence from left to right; The equipment rack (not marked in the figure) is mainly used to install various components; like Figure 2 As shown, a raw material feeding device 100 is installed on an equipment frame, and the raw material feeding device 100 is used for feeding and replenishing non-woven fabrics; the moving direction of the non-woven fabrics is defined as the right side; the raw material feeding device 100 includes two feeding rollers 120 for supporting the non-woven fabrics, and a cloth receiving device 130 for connecting the non-woven fabrics is provided above the two feeding rollers 120, and the cloth receiving device 130 ensures the continuous supply of the non-woven fabrics. The cloth receiving device 130 is a prior art, and is not improved in the present invention, and its structure is not described here.

[0051] In this embodiment, an auxiliary driving device 110 is further provided below the feeding roller 120. The auxiliary driving device 110 can assist in driving the non-woven fabric roll to rotate, thereby reducing the situation where the non-woven fabric is damaged by the traction of the traction device 200. The auxiliary driving device 110 includes a mounting frame, on which a driving wheel and a driven wheel are rotatably mounted, and a shifting belt is wound between the driving wheel and the driven wheel. One end of the mounting frame is hinged to the equipment frame, and an auxiliary cylinder is hinged below the mounting frame. When the equipment is running, the shifting belt fits the non-woven fabric roll, and the driving wheel drives the shifting belt to rotate, thereby assisting the rotation of the non-woven fabric roll. As the non-woven fabric roll gradually becomes smaller, the auxiliary cylinder extends to lift the mounting frame (tilt), thereby ensuring that the shifting belt is always in contact with the non-woven fabric roll.

[0052] like Figure 2 As shown, the traction device 200 (not marked in the figure) is used to traction the non-woven fabric to move forward, and a plurality of traction devices 200 are provided. This structure is a conventional structure of a wet wipes production line and will not be described in detail here; like Figure 1 and Figure 2 The slitting device 300 has two blades for slitting the nonwoven fabric into three nonwoven fabric strips; like Figure 3 As shown, the buffer device 400 has two functions, one is to provide buffering so as to change the cloth, and the other is to keep the three non-woven fabrics synchronized; The buffer device 400 includes a plurality of fixed rollers 410 and a plurality of adjusting rollers 440. The fixed rollers 410 and the adjusting rollers 440 are arranged alternately in the up-and-down direction. Below the adjusting rollers 440, there is a lifting cylinder for driving the adjusting rollers 440 to lift and lower. Between the lifting cylinder and the adjusting rollers 440, there is also a pressure sensor for detecting the pressure change of the adjusting rollers 440. Below the fixed rollers 410, there is a vertically arranged guiding track 420. An installation plate 430 is slidably assembled on the guiding track 420. The adjusting rollers 440 are evenly distributed on the installation plate 430 in the horizontal direction. Below the guiding track 420, there is a cylinder seat 450 for fixing the lifting cylinder. In this embodiment, the pressure sensor is arranged between the installation plate 430 and the lifting cylinder.

[0053] For the cloth changing operation, when preparing to replace the non-woven fabric roll, the lifting cylinder drives the adjusting rollers 440 to descend, so that the buffer device 400 can store a part of the non-woven fabric for the equipment to use during cloth changing. After the cloth receiving is completed, the buffer device 400 resets.

[0054] After the non-woven fabric changes from double rows to triple rows, the traction device 200 also becomes wider accordingly, and the length of the traction rollers becomes longer. During the operation of the equipment, it is possible that the traction forces at both ends of the traction rollers are normal, and the traction force at the middle position of the traction rollers fluctuates occasionally. At this time, the phenomenon reflected in the buffer device 400 is that the middle non-woven fabric is not closely attached to the fixed rollers 410 or the adjusting rollers 440.

[0055] When adjusting synchronization, the lifting cylinder is driven to descend slightly. According to the friction formula F = μN (where F is the frictional force, μ is the coefficient of friction, and N is the normal pressure), the non-woven fabric is tightened to increase the normal pressure on the fixed rollers 410 and the adjusting rollers 440, thereby increasing the frictional force and hindering the progress of the non-woven fabric, reducing the speed. As the lifting cylinder continues to drive the adjusting rollers 440 to tighten other non-woven fabrics, the degree of adhesion of the three non-woven fabrics to the adjusting rollers 440 gradually becomes consistent, and then the triple rows are kept in synchronization. After the three rows of non-woven fabrics are synchronized, the buffer device 400 slowly resets.

[0056] It should be noted that the above adjustment is mainly fine-tuning. At the beginning of the speed deviation of the three non-woven fabrics, the above fine-tuning method can be used to keep the traveling speeds of the three non-woven fabrics consistent, avoiding further increase in the differential speed, thereby greatly improving the operating stability of the equipment. (Since the equipment runs at high speed, if the deviation is too large and the synchronization cannot be adjusted in time, the equipment should be stopped in time to avoid rapid increase in the differential speed of the three non-woven fabrics in a short time).

[0057] As Figure 1 and Figure 2 shown, the deviation rectifying and folding device 600 is used to rectify and fold the non-woven fabric; In the present invention, the deviation rectifying device 500 and the folding device 600 only vary in quantity, and their structures are the same as those of the existing deviation rectifying device 500 and folding device 600, so they will not be elaborated here.

[0058] On the right side of the deviation rectifying device 500, there is also a detection photocell, which is used to detect the situation of the non-woven fabric.

[0059] As Figure 1 and Figure 2 shown, the liquid adding device 700 is used to add liquid to the non-woven fabric. The liquid adding device 700 includes a liquid adding mechanism 710 and a liquid supply mechanism 720; The liquid adding mechanism 710 includes a spray head 711 for spraying liquid medicine on the non-woven fabric and an immersion tank 712 for storing liquid medicine to soak and add liquid medicine to the non-woven fabric, so that users can choose the way of adding liquid medicine according to their needs.

[0060] The two ways of adding medicine are convenient for manufacturers to choose different ways of adding medicine according to different needs.

[0061] Compared with direct immersion, spraying is to spray liquid medicine quantitatively as needed, which can accurately control the usage amount of liquid medicine and avoid waste of a large amount of liquid medicine. Especially for some expensive liquid medicines, this way can reduce production costs; in addition, the liquid medicine has less contact with the external environment during the spraying process, and the wet wipes do not need to share an immersion tank 712, reducing the possibility of the liquid medicine being contaminated. However, the accuracy control of spraying medicine is relatively more difficult and requires multiple debugging, which is not as convenient and direct as immersion.

[0062] The advantage of immersion is that the liquid medicine penetrates sufficiently. The wet wipes are completely immersed in the liquid medicine, which can ensure that the liquid medicine fully penetrates into every part of the wet wipes. Whether it is the surface or the inside, the liquid medicine can be evenly absorbed, and the operation is simple, suitable for small-scale production. However, correspondingly, the disadvantage of immersion is that relatively more liquid medicine is wasted, and the liquid medicine in the immersion tank 712 is in contact with the external environment for a long time, and is easily contaminated by dust, microorganisms, etc. in the air, affecting the quality and stability of the liquid medicine.

[0063] On the right side of the liquid adding device 700, there is also a squeezing mechanism (not marked in the figure) for squeezing the non-woven fabric to discharge the excess liquid medicine.

[0064] As Figure 4 shown, the cutting device 800 is used to cut the non-woven fabric; The cutting device 800 includes a cutting roller knife assembly 810 for cutting the non-woven fabric into small pieces. Below the cutting roller knife assembly 810, there is a cloth receiving mechanism 820 for receiving and transferring the non-woven fabric. On the lower right of the cloth receiving mechanism 820, there is also a feeding mechanism 830 for conveying the non-woven fabric.

[0065] The cloth receiving mechanism 820 includes an upper cloth receiving mechanism 822 and a lower cloth receiving mechanism 821 that cooperates with the upper cloth receiving mechanism 822. The lower cloth receiving mechanism 821 includes a lower material receiving component 8211 that can move up and down in the vertical direction. The lower material receiving component 8211 has a number of spaced-apart material receiving plates, and an avoidance gap is formed between the material receiving plates. The feeding mechanism 830 includes a belt conveying mechanism 832, a embossing mechanism 831, and a compensation conveying mechanism 833. The embossing mechanism 831 is used to emboss the non-woven fabric. At the same time, the embossing of the non-woven fabric also has a certain deviation correction effect. The compensation conveying mechanism 833 is used for adjustment and compensation. The compensation conveying mechanism 833 is hinged to the belt conveying mechanism 832, so that the inclination angle of the compensation conveying mechanism 833 can be slightly adjusted. Since the compensation conveying mechanism 833 is arranged at the end, when there is a height deviation between the compensation conveying mechanism 833 and the feeding conveying mechanism, the angle of the compensation conveying mechanism 833 can be adjusted to enable the compensation conveying mechanism 833 to better cooperate with the feeding conveying mechanism.

[0066] Below the compensation conveying mechanism 833, there is an angle adjustment mechanism 834 for adjusting the angle. In this embodiment, the angle adjustment mechanism 834 is a cylinder.

[0067] The belt conveying mechanism 832 has a number of spaced-apart conveying belts. The material receiving plates are located in the gaps between the conveying belts, so that the lower material receiving component 8211 can pass through the belt conveying mechanism 832 in the vertical direction, and thus the non-woven fabric received by the lower material receiving component 8211 can be smoothly transferred to the belt conveying mechanism 832.

[0068] The upper cloth receiving mechanism 822 includes an upper material receiving component 8221 that cooperates with the lower material receiving component 8211. The upper material receiving component 8221 has a number of spaced-apart material receiving strips, and the material receiving strips and the material receiving plates are arranged in a staggered manner. The upper material receiving component 8221 is also connected with a translation mechanism 8222 for driving the upper material receiving component 8221 to move left and right and a lifting mechanism 8223 for driving the upper material receiving component 8221 to move up and down, so that the upper material receiving component 8221 can smoothly transfer the received non-woven fabric to the lower material receiving component 8211.

[0069] Currently, the cloth receiving mechanism 820 adopts a structure with two alternating operations, that is, after one cloth receiving mechanism 820 finishes receiving the cloth, it moves down to above the feeding mechanism 830 (at the same time, the other cloth receiving mechanism 820 moves to below the cutting roller knife assembly 810 to receive the cloth). The cloth receiving mechanism 820 quickly contracts, so that the stacked non-woven fabric falls on the feeding mechanism 830.

[0070] This method can basically meet the requirements. Since the feeding mechanism 830 is always running, when the stacked non-woven fabrics fall on the feeding mechanism 830 by free fall, there will be a certain inertia, which may cause the stacked non-woven fabrics to shift easily. A small amount of shift generally does not affect the packaging of wet wipes, but mainly affects the embossing effect. However, this structure also restricts the production efficiency. For example, if the running speed of structures such as the feeding mechanism 830 is increased, the shift of the stacked non-woven fabrics will increase; in addition, if the double-row non-woven fabrics are changed to triple-row non-woven fabrics, the number of materials falling each time increases, and it is easier to have a situation where the shift amount of the non-woven fabrics is too large, resulting in the current structure being difficult to meet the three-line production line.

[0071] In this embodiment, through the mutually cooperating upper fabric receiving mechanism 822, lower fabric receiving mechanism 821 and belt conveying mechanism 832, the lower material receiving component 8211 of the lower fabric receiving mechanism 821 has an avoidance gap and can pass through the belt conveying mechanism 832 composed of multiple conveying belts. When the lower material receiving component 8211 descends, the stacked non-woven fabrics can be smoothly transferred onto the belt conveying mechanism 832. Compared with the existing free fall, the situation where the stacked non-woven fabrics shift can be significantly reduced.

[0072] A limiting track 8213 is provided below the lower material receiving component 8211. The lower material receiving component 8211 is fixedly connected with a limiting block 8212. The limiting block 8212 is slidably assembled on the limiting track 8213. The limiting block 8212 is hinged with a connecting rod 8124, and the other end of the connecting rod 8124 is hinged with an eccentric wheel 8215, so that by driving the eccentric wheel 8215 to rotate through a motor, the lower material receiving component 8211 can be driven to lift and lower in the vertical direction.

[0073] The translation mechanism 8222 and the lifting mechanism 8223 have the same structure as the above.

[0074] The above structure is relatively stable, not prone to failure, and easy to adjust the lifting frequency. It can better adjust the frequency of the lower fabric receiving mechanism 821 according to other devices to make it adapt to the production line.

[0075] This embodiment also discloses a non-woven fabric receiving method, including the following steps: S1. The cut non-woven fabrics fall on the upper material receiving component 8221; S2. The upper material receiving component 8221 moves downward and leftward, and the non-woven fabrics are transferred to the lower material receiving component 8211; S3. The lower material receiving component 8211 gradually descends as the number of stacked non-woven fabrics increases; at the same time, the upper material receiving component 8221 moves to the lower left side of the cutting roller knife assembly 810 to prepare for receiving materials; S4. When the quantity of the non-woven fabric reaches the set value, the lower material receiving component 8211 descends, and the non-woven fabric is transported to the belt conveying mechanism 832. At this time, the upper material receiving component 8221 moves to receive the material below the cutting roller knife component 810; S5. Then repeat the above steps.

[0076] Although this specification has shown and described multiple embodiments of the present invention, it is obvious to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art will think of many changes, alterations, and alternative ways without departing from the spirit and idea of the present invention. It should be understood that various alternative solutions of the embodiments of the present invention described herein can be adopted in the process of practicing the present invention. The appended claims are intended to define the protection scope of the present invention and thus cover the module compositions, equivalents, or alternative solutions within the protection scope of these claims.

Claims

1. A three-row synchronous automatic production system for wet wipes, comprising: Equipment rack; Raw material feeding device (100), which is installed on the equipment rack. The raw material feeding device (100) is used for feeding and replenishing non-woven fabrics. Define the advancing direction of the non-woven fabric as the right side; Traction device (200), which is used for pulling the non-woven fabric to advance; Slitting device (300), which is used for slitting the non-woven fabric into several non-woven fabric strips. The slitting device (300) is arranged on the right side of the raw material feeding device (100); Buffer device (400), which is used for buffering in order to change the fabric. The buffer device (400) is arranged on the right side of the slitting device (300); Deviation correction device (500), which is used for correcting the deviation of the non-woven fabric. The deviation correction device (500) is arranged on the right side of the slitting device (300) Flap folding device (600), which is used for folding the non-woven fabric. The flap folding device (600) is arranged below the deviation correction device (500); Liquid adding device (700), which is used for adding liquid to the non-woven fabric. The liquid adding device (700) includes a liquid adding mechanism (710) and a liquid supply mechanism (720). The liquid adding mechanism (710) is arranged on the right side of the deviation correction and flap folding device (600); Cutting device (800), which is used for cutting the non-woven fabric. The cutting device (800) is arranged on the right side of the liquid adding mechanism (710); It is characterized in that the slitting device (300) includes two cutting knives, and the non-woven fabric is slit into three non-woven fabric strips; The buffer device (400) includes a number of fixed rollers (410) and a number of adjusting rollers (440). The fixed rollers (410) and the adjusting rollers (440) are arranged alternately in the up and down direction. Below the adjusting rollers (440), there is a lifting cylinder for driving the adjusting rollers (440) to lift. Between the lifting cylinder and the adjusting rollers (440), there is also a pressure sensor for detecting the pressure change of the adjusting rollers (440).

2. The wet wipe three-row synchronous automated production system according to claim 1, wherein: The raw material feeding device (100) includes two feeding rollers (120) for supporting the non-woven fabric. Above the two feeding rollers (120), there is a cloth connecting device (130) for connecting the non-woven fabric.

3. The wet wipe three-row synchronous automated production system according to claim 2, characterized in that: Below the feeding rollers (120), there is an auxiliary driving device (110) for assisting the rotation of the non-woven fabric roll.

4. The wet wipe three-row synchronous automated production system according to claim 1, wherein: Below the fixed rollers (410), there is a vertically arranged guiding track (420). An installation plate (430) is slidably assembled on the guiding track (420). The adjusting rollers (440) are evenly distributed on the installation plate (430) in the horizontal direction.

5. The wet wipe three-row synchronous automated production system according to claim 1, characterized in that: The liquid adding mechanism (710) includes a spray head (711) for spraying liquid medicine on the non-woven fabric, and an immersion tank (712) for storing liquid medicine to soak and add liquid medicine to the non-woven fabric, so that users can select the way of adding liquid medicine according to their needs.

6. The wet wipe three-row synchronous automated production system according to claim 1, wherein: The cutting device (800) includes a cutting roller knife assembly (810) for cutting the non-woven fabric into small pieces. Below the cutting roller knife assembly (810), there is a cloth receiving mechanism (820) for receiving and transferring the non-woven fabric. On the lower right of the cloth receiving mechanism (820), there is also a feeding mechanism (830) for conveying the non-woven fabric.

7. The wet wipe three-row synchronous automated production system according to claim 6, characterized in that: The cloth receiving mechanism (820) includes an upper cloth receiving mechanism (822) and a lower cloth receiving mechanism (821) that cooperates with the upper cloth receiving mechanism (822). The lower cloth receiving mechanism (821) includes a lower material receiving component (8211) that can be lifted and lowered in the vertical direction. The lower material receiving component (8211) has a number of spaced-apart material receiving plates, and an avoidance gap is formed between the material receiving plates. The feeding mechanism (830) includes a belt conveying mechanism (832), a embossing mechanism (831), and a compensation conveying mechanism (833). The belt conveying mechanism (832) has a number of spaced-apart conveying belts. The material receiving plates are located in the gaps between the conveying belts, so that the lower material receiving component (8211) can pass through the belt conveying mechanism (832) in the vertical direction, and thus the non-woven fabric received by the lower material receiving component (8211) can be smoothly transferred to the belt conveying mechanism (832).

8. The wet wipe three-row synchronous automated production system according to claim 7, wherein: The upper cloth receiving mechanism (822) includes an upper material receiving component (8221) that cooperates with the lower material receiving component (8211). The upper material receiving component (8221) has a number of spaced-apart material receiving strips, and the material receiving strips are arranged alternately with the material receiving plates. The upper material receiving component (8221) is also connected with a translation mechanism (8222) for driving the upper material receiving component (8221) to move left and right and a lifting mechanism (8223) for driving the upper material receiving component (8221) to move up and down, so that the upper material receiving component (8221) can smoothly transfer the received non-woven fabric to the lower material receiving component (8211).

9. The wet wipe three-row synchronous automated production system according to claim 7 or 8, characterized in that: A limiting track (8213) is provided below the lower material receiving component (8211). The lower material receiving component (8211) is fixedly connected with a limiting block (8212). The limiting block (8212) is slidably assembled on the limiting track (8213). The limiting block (8212) is hinged with a connecting rod (8124), and the other end of the connecting rod (8124) is hinged with an eccentric wheel (8215), so that by driving the eccentric wheel (8215) to rotate by a motor, the lower material receiving component (8211) can be driven to lift and lower in the vertical direction.

10. The wet wipe three-row synchronous automated production system according to claim 1, wherein: The compensation conveying mechanism (833) is hinged with the belt conveying mechanism (832), and an angle adjusting cylinder is hinged below the compensation conveying mechanism (833) to adjust the inclination angle of the compensation conveying mechanism (833).

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