Edge sealing detection device for sanitary napkins

Abstract

The utility model relates to the field of sanitary towel manufacturing, in particular to a sanitary towel sealing edge detection device which comprises two conveying devices and a conveying mechanism arranged between the two conveying devices and close to each other, the width of the conveying face of the conveying mechanism is smaller than that of the conveying face of the conveying devices, and the conveying face of the conveying mechanism is located between sealing edges on the two sides of a sanitary towel. The device further comprises at least one detection mechanism, each detection mechanism comprises a U-shaped frame, symmetrically-arranged detection assemblies and a driving assembly for driving the detection assemblies to move in the opposite directions, and each detection assembly comprises a U-shaped plate. One conveying device is responsible for conveying a product to be detected to the conveying mechanism, and the conveying surface of the conveying mechanism is located between the sealing edges on the two sides of the sanitary napkin, so that the sealing edge areas on the two sides of the sanitary napkin product can be naturally exposed outside; the laser distance measuring sensor starts to detect the sealing edges on the two sides of the sanitary towel up and down respectively, and the operation efficiency and accuracy of detection work are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sanitary towel manufacturing field, in particular to a kind of edge sealing detection device of sanitary towel. BACKGROUND

[0002] Sanitary towel it is usually composed of absorbent layer, flow guide layer, waterproof bottom layer etc., with absorbent menstrual blood, keep the function of private part dry and comfortable, in the production process of sanitary towel, edge sealing is an important link, edge sealing can prevent the edge of sanitary towel from wearing due to the pulling of warp and weft, to prolong the service life of sanitary towel, simultaneously, edge sealing can also prevent bacteria, dust and other pollutants from invading sanitary towel, keep its clean and sanitary, after careful design and processing of edge sealing, the edge of sanitary towel can be more flat, beautiful, improve the overall quality of product.

[0003] The main detection contents of edge sealing detection include firmness, flatness and aesthetic degree of edge sealing, firmness generally uses peel strength test and pressure test, flatness and aesthetic degree can only be detected using visual inspection, wherein, the flatness of edge sealing of sanitary towel can directly affect its fit and sealing property in use, if edge sealing is not flat, it can cause side leakage or displacement of sanitary towel in use, to reduce use effect, and uneven edge sealing can bring discomfort to user, even cause skin irritation or damage.

[0004] For the above-mentioned related technology, the inventor finds that the current visual inspection method for evaluating and detecting the flatness of sanitary towel edge sealing has significant deficiencies, specifically, visual inspection is not only inefficient, difficult to meet the detection needs of a large number of products on high-speed production line, but also limited by human subjective judgment, may not be able to comprehensively and accurately identify all flatness problems, in addition, visual inspection can also lead to limitations in detection operation, cannot detect all products on production line without omission, to increase the quality risk of product. UTILITY MODEL CONTENTS

[0005] The technical problem solved by the utility model is to provide an edge sealing detection device of sanitary towel, improve the detection efficiency of flatness of edge sealing of sanitary towel, and reduce the quality risk of sanitary towel.

[0006] To solve the above technical problems, one technical scheme of the utility model is to provide an edge sealing detection device of sanitary towel, which comprises two conveying devices and a conveying mechanism arranged between the two conveying devices and close to the two conveying devices, the width of the conveying surface of the conveying mechanism is less than the width of the conveying surface of the conveying device, the conveying surface of the conveying mechanism is located between the two side edges of the sanitary towel, and the device further comprises one or more detection mechanisms.

[0007] The detection mechanism comprises a U-shaped frame, symmetrically arranged detection assemblies and a driving assembly driving the detection assemblies to move towards each other and in opposite directions, the detection assembly comprises a U-shaped plate, laser ranging sensors are symmetrically arranged on the inner side of the U-shaped plate in up-down direction, and the laser ranging sensors are arranged in the opposite direction of the conveying direction of the conveying device;

[0008] The conveying mechanism is provided with a pushing mechanism on one side in the conveying direction, and a receiving box is arranged on the side of the conveying mechanism away from the pushing mechanism.

[0009] By adopting the above technical scheme, one of the conveying devices transmits the product to be detected to the conveying mechanism, and since the width of the conveying surface of the conveying mechanism is smaller than that of the conveying surface of the conveying device, the edge sealing areas on both sides of the product can be exposed, and the main part of the product is conveyed by the conveying mechanism, at this time, the laser ranging sensors detect the upper and lower surfaces of the edge sealing of the product respectively, the flatness of the edge sealing is judged by comparing the difference between the two distances, the detected data is immediately communicated with the PLC on the production line, the PLC as the control center of the whole production line judges whether the edge sealing of the sanitary napkin is qualified according to the received data, then the signal of the unqualified product is transmitted to the pushing mechanism, and the unqualified product is pushed by the pushing mechanism to the receiving box for centralized treatment, in addition, the driving assembly drives the detection assembly to move towards each other and in opposite directions, the position of the detection assembly is adjusted to adapt to the detection requirement of sanitary napkins with different widths, and the flexibility and adaptability of detection are improved.

[0010] In a preferred example, the driving assembly comprises a mounting seat and a mounting plate connected to the U-shaped frame respectively, a double-headed threaded connecting rod is rotatably connected between the mounting seat and the mounting plate, nut seats are symmetrically and threadedly connected to the double-headed threaded connecting rod, the nut seats are connected to the corresponding U-shaped plates respectively, a servo motor is connected to one side of the mounting plate, an output shaft of the servo motor is connected to the double-headed threaded connecting rod, guide rails connected to the U-shaped frame are arranged on the two sides of the double-headed threaded connecting rod respectively, two sliding blocks are slidably connected to the guide rails respectively, and the sliding blocks are connected to the corresponding U-shaped plates respectively.

[0011] By adopting the above technical scheme, the mounting seat and the mounting plate are connected to the U-shaped frame respectively, thereby providing a stable support and a rotating platform for the double-headed threaded connecting rod, the servo motor drives the double-headed threaded connecting rod to rotate, the nut seat is driven to move, thereby driving the U-shaped plate to move towards each other or in opposite directions, the detection assembly is accurately adjusted, and in the moving process of the U-shaped plate, the sliding blocks slide on the guide rails, thereby not only enhancing the stability of the U-shaped plate in the moving process, but also ensuring that the U-shaped plate can move smoothly and accurately along the predetermined track.

[0012] The utility model discloses in a preferable example can be further configured as: the pushing mechanism includes L shaped support plate, the L shaped support plate is connected with the push plate on one side close to the conveying mechanism, and the other side is equipped with the electric push rod of driving push plate movement, install the photoelectric sensor that sets up close to the conveying mechanism on the L shaped support plate, the photoelectric sensor is located the side of conveying mechanism top.

[0013] Through adopting above technical scheme, the photoelectric sensor monitors the sanitary towel product position on the conveying mechanism, and triggers the pushing action at the suitable time, accurately identifies the existence and position of sanitary towel product, thereby avoids the situation of false pushing or missing pushing, when the electric push rod drives the push plate to move, the push plate will push the unqualified sanitary towel product to slide from the conveying mechanism to the receiving box, and the photoelectric sensor is located the side of conveying mechanism top, such design guarantees that the sensor can clearly capture the information of sanitary towel product, avoids the interference with other components on the conveying mechanism, and simultaneously, such position selection also facilitates the collaborative operation with the push plate and the electric push rod, ensures the accuracy and reliability of the pushing process.

[0014] The utility model discloses in a preferable example can be further configured as: the conveying mechanism includes support one and conveyer belt one, one end of support one is rotatably connected with driving wheel one, and the other end is connected with driven wheel one, and driving wheel one and driven wheel one are respectively connected with conveyer belt one, and one side of support one is installed with drive motor one, and the output shaft of drive motor one is connected with driving wheel one, and still include the auxiliary roller one of interval arrangement, and the auxiliary roller one is rotatably connected with support one respectively and is located in conveyer belt one respectively.

[0015] Through adopting above technical scheme, the driving motor one drives driving wheel one to rotate, and is connected with conveyer belt one through conveyer belt one, thereby drives conveyer belt one and driven wheel one synchronous motion, realizes the conveying of sanitary towel product, and the auxiliary roller one can also prevent conveyer belt one from deforming or deviating in the running process due to uneven stress, ensures that the product can be stably conveyed.

[0016] The utility model discloses in a preferable example can be further configured as: the conveyer includes support two and conveyer belt two, one end of support two is rotatably connected with driving wheel two, and the other end is connected with driven wheel two, and driving wheel two and driven wheel two are respectively connected with conveyer belt two, and one side of support two is installed with drive motor two, and the output shaft of drive motor two is connected with driving wheel two, and still include the auxiliary roller two of interval arrangement, and the auxiliary roller two is rotatably connected with support two respectively and is located in conveyer belt one respectively.

[0017] By adopting the above technical scheme, the driving motor drives the second driving driving wheel to rotate, the driving wheel two and the driven wheel two are located at two ends of the bracket two, and are connected in meshing with the conveying belt two through the driving wheel two and the driven wheel two, so as to drive the conveying belt two and the driven wheel two to move synchronously, and the sanitary napkin product is conveyed.

[0018] In a preferred example, the bottom of the push plate is connected with a soft brush.

[0019] By adopting the above technical scheme, the soft brush is connected at the bottom of the push plate and directly contacts the sanitary napkin product, reduces damage or scratches to the sanitary napkin product caused by the push plate during pushing, and accurately pushes the product into the receiving box.

[0020] In summary, the utility model discloses the following at least one edge sealing detection device of sanitary napkin has the beneficial technical effect:

[0021] 1. One of the conveying devices is responsible for conveying the product to be detected to the conveying mechanism, and the conveying surface of the conveying mechanism is located between the two side edges of the sanitary napkin, so that the two side edge regions of the sanitary napkin product can be naturally exposed, when the sanitary napkin is conveyed to the detection mechanism, the laser ranging sensor starts to detect the two side edges of the sanitary napkin respectively, and compares the difference between the two distances, to accurately judge the flatness of the edge sealing, and the communication and signal processing of PLC, and the detected data will be immediately communicated with the PLC on the production line, and whether the edge sealing of the sanitary napkin is qualified is judged, the operation efficiency and accuracy of the detection operation are improved.

[0022] 2. The double-thread connecting rod is driven to rotate by the servo motor, and cooperates with the nut seat, so that the detection assembly can move towards or away from each other according to the needs of different width products, ensuring that the detection area is consistent with the width of the product, and accurate detection can be carried out on sanitary napkin products of different specifications and sizes, avoiding detection errors and missed detection caused by differences in product width. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings, wherein:

[0024] Figure 1 It is a structural schematic view of the utility model;

[0025] Figure 2 It is a structural schematic view of the detection mechanism of the utility model;

[0026] Figure 3 For Figure 2 Structure diagram of the driving assembly;

[0027] Figure 4 Structure diagram of the pushing mechanism of the utility model;

[0028] Figure 5 Structure diagram of the conveying mechanism of the utility model;

[0029] Figure 6 Structure diagram of the conveying device of the utility model.

[0030] In the figure: 10, conveying device; 20, conveying mechanism; 30, detection mechanism; 40, pushing mechanism; 5, receiving box;

[0031] 11, support two; 12, conveying belt two; 13, driving wheel two; 14, driven wheel two; 15, driving motor two; 16, auxiliary roller two;

[0032] 21, support one; 22, conveying belt one; 23, driving wheel one; 24, driven wheel one; 25, driving motor one; 26, auxiliary roller one;

[0033] 31, U-shaped frame; 32, detection assembly; 33, driving assembly;

[0034] 41, L-shaped support plate; 42, push plate; 43, electric push rod; 44, photoelectric sensor; 45, soft hair brush;

[0035] 321, U-shaped plate; 322, laser ranging sensor;

[0036] 331, mounting seat; 332, mounting plate; 333, double-headed threaded connecting rod; 334, nut seat; 335, servo motor; 336, guide rail; 337, sliding block. DETAILED DESCRIPTION

[0037] The preferred embodiments of the utility model will be described below in conjunction with the drawings, and it should be understood that the preferred embodiments described here are only for illustrating and explaining the utility model, and are not used to limit the utility model.

[0038] It should be noted that these drawings are all simplified schematic diagrams, and only illustrate the basic structure of the utility model in a schematic manner, so they only show the relevant components of the utility model.

[0039] With reference to Figures 1-6The utility model discloses an edge detection device of sanitary towel, including two conveyer 10 and setting between it and close setting conveying mechanism 20, the width of conveying mechanism 20 delivery surface is less than the width of conveyer 10 delivery surface, and the delivery surface of conveying mechanism 20 is located between the both sides edge of sanitary towel, still include not less than one detection mechanism 30, and detection mechanism 30 includes U -shaped frame 31, the detection assembly 32 of symmetrical setting and drive detection assembly 32 drive assembly 33 of opposite movement to each other, and detection assembly 32 includes U -shaped board 321, and the inside of U -shaped board 321 is symmetrically installed with laser ranging sensor 322, and laser ranging sensor 322 is along the opposite direction of conveyer 10 conveying direction setting, and the one side of conveying mechanism 20 along conveying direction is installed with pusher mechanism 40, and the side of conveying mechanism 20 away from pusher mechanism 40 is placed with receiving box 5, one of conveyer 10 is responsible for the sanitary towel product of detection to be stable transmission to conveying mechanism 20, because the width of conveying mechanism 20 is designed on purpose less than the width of conveyer 10, this design makes the both sides edge area of sanitary towel product can be naturally exposed, make detection process can be more accurate focus on edge area, to improve the accuracy and efficiency of detection, when sanitary towel is conveyed to detection mechanism 30, laser ranging sensor 322 starts to detect respectively the both sides edge of sanitary towel to judge the flatness of edge accurately, and the data detected will immediately communicate transmission with the PLC on production line, and the PLC on production line as the control center of whole production line, will judge whether the edge of sanitary towel is qualified according to the data received, and the intervention of PLC makes the whole detection process more intelligent and automation, improves the operation efficiency and accuracy of production line, once the edge of sanitary towel is not qualified to PLC determination, will immediately send a signal to pusher mechanism 40, and pusher mechanism 40 starts immediately, and the sanitary towel product of unqualified is pushed from conveying mechanism 20 and falls to receiving box 5.

[0040] The driving assembly 33 comprises a mounting seat 331 and a mounting plate 332 connected to the U-shaped frame 31 respectively, a double-headed threaded connecting rod 333 is rotationally connected between the mounting seat 331 and the mounting plate 332, a nut seat 334 is symmetrically screwed on the double-headed threaded connecting rod 333, the nut seat 334 is connected with the corresponding U-shaped plate 321 respectively, one side of the mounting plate 332 is connected with a servo motor 335, the output shaft of the servo motor 335 is connected with the double-headed threaded connecting rod 333, both sides of the double-headed threaded connecting rod 333 are respectively provided with guide rails 336 connected with the U-shaped frame 31, two sliding blocks 337 are respectively slidably connected on the guide rails 336, and the sliding blocks 337 are respectively connected with the corresponding U-shaped plate 321; when it is necessary to adjust the position of the U-shaped plate 321 to adapt to sanitary napkin products of different widths, the servo motor 335 drives the double-headed threaded connecting rod 333 to rotate, the nut seat 334 moves with the rotation of the double-headed threaded connecting rod 333, and the U-shaped plate 321 is driven to move towards or away from, so that the detection assembly 32 is accurately adjusted, and in the moving process of the U-shaped plate 321, the U-shaped plate 321 moves smoothly and accurately along the guide rails 336 due to the sliding connection of the sliding blocks 337 on the guide rails 336, until a predetermined position is reached, so that the stability and accuracy of the detection process are ensured.

[0041] The pushing mechanism 40 comprises an L-shaped support plate 41, a push plate 42 connected to one side of the L-shaped support plate 41 close to the conveying mechanism 20, an electric push rod 43 installed on the other side of the L-shaped support plate 41 and used for driving the push plate 42 to move, an optical sensor 44 installed on the L-shaped support plate 41 and arranged close to the conveying mechanism 20, the optical sensor 44 being located above one side of the conveying mechanism 20, and a soft brush 45 connected to the bottom of the push plate 42; the soft brush 45 is made of soft and wear-resistant materials such as nylon or polyester fiber, has fine and elastic bristles, reduces damage to the sanitary napkin products caused by the push plate 42 during pushing, and monitors the position of the products in real time when the sanitary napkin products are conveyed to the detection mechanism 30 for edge flatness detection; once the external PLC determines that the edge of the sanitary napkin is unqualified and sends a pushing signal, the electric push rod 43 is quickly started to drive the push plate 42 to move forward. After the push plate 42 contacts the unqualified sanitary napkin product, the push plate 42 pushes the unqualified sanitary napkin product off the conveying mechanism 20 and into the receiving box 5, thereby improving the efficiency and accuracy of detection and avoiding the influence of unqualified products on the subsequent production process.

[0042] The conveying mechanism 20 comprises a support 21 and a conveying belt 22, one end of the support 21 is rotatably connected with a driving wheel 23, the other end is connected with a driven wheel 24, the driving wheel 23 and the driven wheel 24 are respectively meshed with the conveying belt 22, one side of the support 21 is provided with a driving motor 25, the output shaft of the driving motor 25 is connected with the driving wheel 23, and the conveying mechanism 20 further comprises auxiliary rollers 26 which are arranged at intervals, and are respectively rotatably connected with the support 21 and located in the conveying belt 22; when the sanitary napkin products are conveyed to the conveying mechanism 20 by the previous conveying device 10, the sanitary napkin products fall on the conveying belt 22, at this time, the driving motor 25 drives the driving wheel 23 to rotate, thereby driving the conveying belt 22 and the driven wheel 24 to move synchronously, under the support and assistance of the auxiliary rollers 26, the conveying belt 22 stably conveys the sanitary napkin products to the detection mechanism 30 for detection.

[0043] The conveying device 10 comprises a support 11 and a conveying belt 12, one end of the support 11 is rotatably connected with a driving wheel 13, the other end is connected with a driven wheel 14, the driving wheel 13 and the driven wheel 14 are respectively meshed with the conveying belt 12, one side of the support 11 is provided with a driving motor 15, the output shaft of the driving motor 15 is connected with the driving wheel 13, and the conveying device 10 further comprises auxiliary rollers 16 which are arranged at intervals and are respectively rotatably connected with the support 11 and located in the conveying belt 12.

[0044] The implementation principle of the embodiment is that: in use, first, according to the specifications and requirements of the sanitary napkin products to be detected, the detection parameters are set through the PLC control panel or remote control system on the production line, including the determination standard of the edge flatness, the pushing force and speed of the pushing mechanism 40 and the like, then the production line places the sanitary napkin products to be detected on the conveying device 10, and conveys the sanitary napkin products to the detection area of the conveying mechanism 20, since the width of the conveying mechanism 20 is specially designed to be less than the width of the conveying device 10, the two side edge areas of the sanitary napkin products can be naturally exposed, at this time, the laser ranging sensor 322 detects the two side edges of the sanitary napkin products, the PLC system on the production line analyzes the flatness of the edge in real time according to the data transmitted by the laser ranging sensor 322, once it is determined that the edge is unqualified, the pushing mechanism 40 is triggered to perform the pushing action, the photoelectric sensor 44 drives the push rod 43 to move forward, and the soft brush 45 contacts the unqualified sanitary napkin products, so that the unqualified sanitary napkin products are stably and accurately pushed into the receiving box 5, and the unqualified sanitary napkin products pushed into the receiving box 5 are collected for subsequent processing or analysis.

[0045] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, are all included in the patent protection scope of the present application.

Claims

1. A sealing edge detection device for sanitary napkins, characterized in that, It includes two conveying devices (10) and a conveying mechanism (20) disposed between and close to them. The width of the conveying surface of the conveying mechanism (20) is smaller than the width of the conveying surface of the conveying device (10). The conveying surface of the conveying mechanism (20) is located between the two sealing edges of the sanitary napkin. It also includes at least one detection mechanism (30). The detection mechanism (30) includes a U-shaped frame (31), symmetrically arranged detection components (32), and a driving component (33) that drives the detection components (32) to move in opposite directions. The detection component (32) includes a U-shaped plate (321), and laser rangefinders (322) are symmetrically installed on the inner side of the U-shaped plate (321). The laser rangefinders (322) are arranged in the opposite direction to the conveying direction of the conveying device (10). The conveying mechanism (20) has a pushing mechanism (40) installed on one side along the conveying direction, and a receiving box (5) is placed on the side of the conveying mechanism (20) away from the pushing mechanism (40).

2. The sealing edge detection device for sanitary napkins according to claim 1, characterized in that, The drive assembly (33) includes a mounting base (331) and a mounting plate (332) respectively connected to the U-shaped frame (31). A double-threaded connecting rod (333) is rotatably connected between the mounting base (331) and the mounting plate (332). Nut seats (334) are symmetrically threaded on the double-threaded connecting rod (333). The nut seats (334) are respectively connected to the corresponding U-shaped plates (321). A servo motor (335) is connected to one side of the mounting plate (332). The output shaft of the servo motor (335) is connected to the double-threaded connecting rod (333). Guide rails (336) connected to the U-shaped frame (31) are respectively provided on both sides of the double-threaded connecting rod (333). Two sliders (337) are slidably connected on the guide rails (336). The sliders (337) are respectively connected to the corresponding U-shaped plates (321).

3. The sealing edge detection device for sanitary napkins according to claim 1, characterized in that, The pushing mechanism (40) includes an L-shaped support plate (41). A push plate (42) is connected to one side of the L-shaped support plate (41) near the conveying mechanism (20), and an electric push rod (43) for driving the push plate (42) to move is installed on the other side. A photoelectric sensor (44) is installed on the L-shaped support plate (41) near the conveying mechanism (20), and the photoelectric sensor (44) is located above one side of the conveying mechanism (20).

4. The sealing edge detection device for sanitary napkins according to claim 1, characterized in that, The conveying mechanism (20) includes a support (21) and a conveyor belt (22). One end of the support (21) is rotatably connected to a drive wheel (23), and the other end is connected to a driven wheel (24). The drive wheel (23) and the driven wheel (24) are respectively engaged with the conveyor belt (22). A drive motor (25) is installed on one side of the support (21). The output shaft of the drive motor (25) is connected to the drive wheel (23). The mechanism also includes auxiliary rollers (26) spaced apart. The auxiliary rollers (26) are rotatably connected to the support (21) and are respectively located in the conveyor belt (22).

5. The sealing edge detection device for sanitary napkins according to claim 1, characterized in that, The conveying device (10) includes a support frame (11) and a conveyor belt (12). One end of the support frame (11) is rotatably connected to a drive wheel (13), and the other end is connected to a driven wheel (14). The drive wheel (13) and the driven wheel (14) are respectively meshed with the conveyor belt (12). A drive motor (15) is installed on one side of the support frame (11). The output shaft of the drive motor (15) is connected to the drive wheel (13). It also includes auxiliary rollers (16) spaced apart. The auxiliary rollers (16) are rotatably connected to the support frame (11) and are respectively located in the conveyor belt (12).

6. The sealing edge detection device for sanitary napkins according to claim 3, characterized in that, A soft brush (45) is connected to the bottom of the push plate (42).

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