Calender for automatically processing breathable film

Abstract

The utility model discloses an automatic calender for breathable film processing, which relates to the related field of breathable film calendering, and comprises a mounting frame, the front side and the rear side of the middle end in the mounting frame are respectively and rotatably connected with a lower side compression roller, the right side of the mounting frame is provided with a transmission case, and a gear in the transmission case is fixedly connected with the right end of the lower side compression roller; the shaping mechanism is arranged on the front side of the middle end of the mounting frame, when the breathable film penetrates through the shaping mechanism, the top face of the cooling plate makes contact with the bottom face of the breathable film, heat absorbed by the cooling plate is transferred out through cold water exchange between the heat exchanger and an external water conveying pipe, and therefore the purpose of cooling the breathable film which is rolled just now is achieved; the air-permeable membrane is flattened and shaped in the downward pressing and flattening process of the displacement plate, so that the air-permeable membrane can obtain the flattening effect of cooling and shaping, and the problem that the edge part of the air-permeable membrane shrinks and rolls in the temperature drop process is solved.

Description

Technical Field

[0001] The utility model relates to the field of calendering of breathable films, and specifically relates to a calender for automatic processing of breathable films. Background Technique

[0002] The breathable film plays a key role in diapers and sanitary napkins. It allows water vapor to pass through while keeping dry, and at the same time prevents liquid leakage, improving comfort and leak-proof effect. The latest calendering technology significantly improves the flatness and bonding quality of the breathable film through optimizing the mechanical structure and control system, adopting multi-stage calender rolls and precise control, thus enhancing the overall performance and user experience of personal hygiene products.

[0003] Existing calenders, such as the Chinese utility model patent with the patent number CN202020831867.2, discloses "A calendering device for producing breathable films". In this device, there is a bottom box, a driving roll and a fixed box. The left side of the top of the bottom box is fixedly connected to the bottom of the driving roll, and the right side of the top of the bottom box is fixedly connected to the bottom of the fixed box. Both sides inside the fixed box are provided with chutes, and a driving box is slidably connected between the two chutes through a slider. The bottom of the inner cavity of the driving box is fixedly connected to a motor through a support plate, and the output end of the motor is fixedly connected to a rotating shaft through a coupling. This calendering device for producing breathable films can adjust the distance between the two calender rolls according to the actual calendering thickness of the breathable film, facilitating the user to operate according to the actual situation. The overall applicable range is wide, and the overall automation degree is high, reducing the labor intensity of the staff to a certain extent, facilitating the user to store the tools to be used, and the overall stability is strong.

[0004] Although the above device has certain advantages, it still has certain defects:

[0005] 1. When calendering the breathable film used for producing diapers and sanitary napkins, although the device has a high degree of automation and reduces the labor intensity of the staff to a certain extent, when calendering the breathable film, it does not cool, shape and level it. The breathable film may shrink and curl the edge part due to the temperature drop after calendering, resulting in calendering errors of the breathable film.

[0006] 2. At the same time, the device does not improve the precise tension control work for the breathable film being calendered, which may cause the width of the breathable film to change during the calendering process due to the imbalance of tension control, resulting in a decline in the quality of the breathable film finished product. Content of the Utility Model

[0007] Therefore, in order to solve the above deficiencies, the utility model provides a calender for automatic processing of breathable films here.

[0008] The present utility model is implemented as follows. A calender for automated breathable film processing is constructed. The device includes a mounting frame. At the front and rear sides of the middle end inside the mounting frame, lower calender rolls are respectively rotatably connected. A transmission box is provided on the right side of the mounting frame, and the gears inside the transmission box are fixedly connected to the right ends of the lower calender rolls. Four motors are provided on the top surface of the mounting frame, and the lower output shafts of the motors pass through the mounting frame and are fixedly connected to the upper ends of threaded rods. A winding roller is provided at the lower end of the front surface of the mounting frame. The lower ends of the threaded rods are threadedly connected to the threaded holes on the front and rear sides of a moving crossbeam, and the protruding parts at the front and rear ends of the moving crossbeam are slidably connected to the inner sliding grooves of the mounting frame. Two upper calender rolls are rotatably connected between the moving crossbeams;

[0009] A shaping mechanism, the shaping mechanism is provided at the front side of the middle end of the mounting frame; a tension mechanism, the tension mechanism is provided at the middle end of the front surface of the mounting frame;

[0010] The shaping mechanism further includes: L-shaped fixing blocks. Two groups of L-shaped fixing blocks are symmetrically arranged at the front side of the middle end of the mounting frame. Displacement sensors are fixedly installed at the opposite surfaces of the two groups of L-shaped fixing blocks at the front side of the middle end of the mounting frame, and the lower probes of the displacement sensors are respectively fixedly connected to the left and right sides of the top surface of a displacement plate. The lower ends of the L-shaped fixing blocks are respectively fixedly connected to the left and right sides of the top surface of a cooling plate. Arc-shaped anti-scratch blocks are symmetrically provided at the front and rear sides of the cooling plate. The bottom surface of the cooling plate is fixedly connected to a heat exchanger.

[0011] Preferably, the tension mechanism includes: fixing members. The left and right sides of the middle end of the front surface of the mounting frame are respectively fixedly connected to fixing members, and the fixing members are respectively rotatably connected to the left and right sides of the rear-side rotating shafts of a transmission belt. An infrared detector is provided at the top of the transmission belt. Cylinders are provided at the front ends of the left and right sides of the transmission belt. The front end telescopic rods of the cylinders are fixedly connected to the rear surface of a rotating block. The central hole of the rotating block is rotatably connected to the side surface of the roller body of a tensioning roller.

[0012] Preferably, the top surface of the cooling plate is in the same plane as the upper side of the lower calender roll, and the top surface of the cooling plate is in the same plane as the top surface of the middle end of the transmission belt.

[0013] Preferably, the top surface of the middle end of the transmission belt is in the same plane as the upper side of the tensioning roller, and the top surface of the middle end of the transmission belt is three centimeters away from the infrared emission surface at the bottom end of the middle of the infrared detector.

[0014] The present utility model has the following advantages: The present utility model provides a calender for automated breathable film processing by making improvements. Compared with the same type of equipment, the following improvements are made:

[0015] The calender for automatic breathable film processing described in the present utility model is provided with a shaping mechanism at the front side in the middle of the installation frame. When the breathable film passes through the shaping mechanism, the top surface of the cooling plate contacts the bottom surface of the breathable film, and the heat absorbed by the cooling plate is transferred out through the heat exchanger by exchanging cold water with the external water pipe, so as to achieve the purpose of cooling the just-calendered breathable film, enabling the breathable film to be leveled and shaped under the pressing and flattening of the displacement plate, so that the breathable film can obtain the leveling effect of cooling and shaping, and avoiding the problem that the edge part of the breathable film will shrink and curl during the temperature drop.

[0016] The calender for automatic breathable film processing described in the present utility model is provided with a tension mechanism at the middle part in the front of the installation frame. During the calendering process of the breathable film, the breathable film needs to maintain a certain degree of tension at all times to balance the deformation generated during the calendering process. When the breathable film bypasses the tension roller and is fixed downward in the winding roller for winding, the width of the breathable film is detected in real time by the infrared detector and uploaded to the external controller to adjust the air cylinder and the tension roller, so that when the tension of the breathable film is insufficient or excessive, the displacement of the tension roller is adjusted to solve the tension problem of the breathable film and avoid the problem that the width of the breathable film becomes larger or smaller after calendering due to the tension problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic structural diagram of the shaping mechanism of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the heat exchanger of the present utility model;

[0020] Figure 4 is a schematic structural diagram of the tension mechanism of the present utility model.

[0021] Wherein: installation frame - 1, lower calender roller - 2, transmission box - 3, motor - 4, threaded rod - 5, moving crossbeam - 6, upper calender roller - 7, shaping mechanism - 8, L-shaped fixing block - 81, displacement sensor - 82, displacement plate - 83, cooling plate - 84, arc-shaped anti-scratch block - 85, heat exchanger - 86, tension mechanism - 9, fixing piece - 91, transmission belt - 92, infrared detector - 93, air cylinder - 94, rotating block - 95, tension roller - 96, winding roller - 10. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will be combined with the attached Figures 1-4A detailed description of the present utility model is given, and the technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0023] Embodiment 1:

[0024] Please refer to Figure 1 , a calender for automatic breathable film processing of the present utility model. The front and rear sides of the middle end inside the installation frame 1 are respectively rotatably connected with lower rollers 2. A transmission box 3 is provided on the right side of the installation frame 1, and the gears inside the transmission box 3 are fixedly connected to the right ends of the lower rollers 2. A power source motor is provided on the front side of the right surface of the transmission box 3, and the output shaft of the power source motor is fixedly connected to the gear inside the transmission box 3 to provide power for the transmission box 3. Four motors 4 are provided at the four places on the top surface of the installation frame 1, and the lower output shafts of the motors 4 pass through the installation frame 1 and are fixedly connected to the upper ends of the threaded rods 5. A take-up roller 10 is provided at the lower end of the front surface of the installation frame 1. The lower ends of the threaded rods 5 are threadedly connected to the threaded holes on the front and rear sides of the moving cross beam 6, and the protruding parts at the front and rear ends of the moving cross beam 6 are slidably connected to the inner sliding grooves of the installation frame 1. Two upper rollers 7 are rotatably connected between the moving cross beams 6; a shaping mechanism 8 is provided on the front side of the middle end of the installation frame 1; a tension mechanism 9 is provided in the middle of the front surface of the installation frame 1.

[0025] Please refer to Figure 2 and 3 , a calender for automatic breathable film processing of the present utility model. The shaping mechanism 8 further includes: two groups of L-shaped fixing blocks 81 are symmetrically arranged on the front side of the middle end of the installation frame 1. A displacement sensor 82 is fixedly installed at the opposite surfaces of the two groups of L-shaped fixing blocks 81 on the front side of the middle end of the installation frame 1, and the lower probes of the displacement sensor 82 are respectively fixedly connected to the left and right sides of the top surface of the displacement plate 83. The lower ends of the L-shaped fixing blocks 81 are respectively fixedly connected to the left and right sides of the top surface of the cooling plate 84. Arc-shaped anti-scratch blocks 85 are symmetrically arranged on the front and rear sides of the cooling plate 84. The setting of the arc-shaped anti-scratch blocks 85 can prevent the breathable film from being scratched at the right-angle parts on the front and rear sides of the cooling plate 84. At the same time, the arc-shaped anti-scratch blocks 85 will be in contact with the front and rear ends of the heat exchanger 86, so that the cooling plate 84 can increase the speed and efficiency of temperature transfer through the arc-shaped anti-scratch blocks 85. The bottom surface of the cooling plate 84 is fixedly connected to the heat exchanger 86, and the right end of the heat exchanger 86 is fixedly connected to an external water pipe, so as to let the external water pipe provide cold water for the heat exchanger 86; the top surface of the cooling plate 84 is in the same plane as the upper side of the lower roller 2, and the top surface of the cooling plate 84 is in the same plane as the top surface of the middle end of the transmission belt 92, so that the breathable film can always be located on the top surface of the cooling plate 84 and increase the detection accuracy of the displacement sensor 82.

[0026] Embodiment 2:

[0027] Please refer to Figure 4 , for a calender for processing automated breathable membranes of the present utility model, the tension mechanism 9 includes: fixed members 91 are fixedly connected to the left and right sides of the middle front end of the installation frame 1, and the fixed members 91 are respectively rotatably connected to the left and right sides of the rear shafts of the transmission belt 92. An infrared detector 93 is provided on the top of the transmission belt 92. Cylinders 94 are provided at the front ends of the left and right sides of the transmission belt 92. The front end telescopic rods of the cylinders 94 are fixedly connected to the rear surface of the rotating block 95. The central hole of the rotating block 95 is rotatably connected to the side surface of the roller body of the tension roller 96; the top surface of the middle end of the transmission belt 92 and the upper side of the tension roller 96 are in the same plane, and the distance between the top surface of the middle end of the transmission belt 92 and the infrared emitting surface of the bottom surface of the middle end of the infrared detector 93 is three centimeters, which helps the displacement sensor 82 improve the detection accuracy and reduce the error during the measurement of the infrared detector 93.

[0028] The present utility model provides a calender for processing automated breathable membranes through improvement, and its working principle is as follows;

[0029] First, when using this device, first place this device in the working area, and then connect the device to an external power supply and an external controller, which can provide the electrical energy required for the operation of this device;

[0030] Second, when calendering the breathable membrane used for producing diapers and sanitary napkins, the breathable membrane enters the inside of the installation frame 1 from the external conveyor belt. The power source motor of the transmission box 3 is started through the external controller, so that the transmission box 3 obtains power and drives the two lower calender rollers 2 to rotate, thereby driving the breathable membrane to move forward. At the same time, the motor 4 is started through the external controller. The motor 4 drives the threaded rod 5 to rotate through the output shaft. The threaded rod 5 will be threadedly connected to the moving cross beam 6, and then drive the moving cross beam 6 to move downward along the internal chute of the installation frame 1, so that the moving cross beam 6 drives the two upper calender rollers 7 to press down on the breathable membrane, thereby completing the calendering work of the breathable membrane. After the breathable membrane is calendered, it will first pass through the shaping mechanism 8 and bypass the front side of the tension roller 96 at the front end of the tension mechanism 9, and then downward to be fixedly connected to the inside of the winding roller 10 for winding work;

[0031] Thirdly, when passing through the shaping mechanism 8, the bottom surface of the breathable film will contact the top surface of the cooling plate 84, and transfer the relatively high temperature inside the breathable film to the cooling plate 84. The cooling plate 84 transfers the absorbed heat through the heat exchanger 86 to exchange cold water with the external water pipe, so as to achieve the purpose of cooling the just-calendered breathable film. At the same time, the displacement plate 83 presses down on the breathable film driven by the displacement sensor 82, so as to help the breathable film to be leveled and shaped during cooling, and assist the displacement sensor 82 to measure the thickness of the breathable film, thereby increasing the production efficiency of the breathable film. Through the above operations, the breathable film can be cooled, shaped and leveled, and the problem that the edge part of the breathable film will shrink and curl during temperature drop can be avoided, thereby increasing the overall efficiency of producing breathable films for diapers and sanitary napkins;

[0032] Fourthly, when the breathable film bypasses the tension roller 96 and is fixed downward on the winding roller 10 for winding, the width of the breathable film is detected in real time by the infrared detector 93 and uploaded to the external controller to control the air cylinder 94 and the tension roller 96. The air cylinder 94 drives the tension roller 96 to move through the front end telescopic rod and the rotating block 95, so as to adjust the displacement of the tension roller 96 when the tension of the breathable film is insufficient or excessive, thereby solving the tension problem of the breathable film and avoiding the change of the width of the breathable film becoming larger or smaller after calendering due to the tension problem.

[0033] The utility model provides a calender for automatically processing breathable films through improvement. By arranging the shaping mechanism 8 at the front side of the middle end of the installation frame 1, when the breathable film passes through the shaping mechanism 8, the top surface of the cooling plate 84 contacts the bottom surface of the breathable film, and the heat absorbed by the cooling plate 84 is transferred through the heat exchanger 86 to exchange cold water with the external water pipe, so as to achieve the purpose of cooling the just-calendered breathable film, and the breathable film is leveled and shaped under the pressing and leveling of the displacement plate 83, so that the breathable film can be cooled, shaped and leveled, and the problem that the edge part of the breathable film will shrink and curl during temperature drop can be avoided; By arranging the tension mechanism 9 at the middle end of the front of the installation frame 1, during the calendering process of the breathable film, the breathable film needs to maintain a certain degree of tension at all times to balance the deformation generated during the calendering process of the breathable film. When the breathable film bypasses the tension roller 96 and is fixed downward on the winding roller 10 for winding, the width of the breathable film is detected in real time by the infrared detector 93 and uploaded to the external controller to control the air cylinder 94 and the tension roller 96, so as to adjust the displacement of the tension roller 96 when the tension of the breathable film is insufficient or excessive, thereby solving the tension problem of the breathable film, avoiding the change of the width of the breathable film becoming larger or smaller after calendering due to the tension problem, and avoiding that the breathable film cannot be used for producing diapers and sanitary napkins due to the width problem.

[0034] The basic principles, main features and advantages of the present utility model have been shown and described above. Moreover, the standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can all be customized according to the records in the specification and the drawings. The specific connection manners of each part all adopt conventional means such as bolts, rivets, welding, etc. which are mature in the prior art. The machines, parts and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection manner in the prior art, details are not described herein again.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A calender for processing an automated breathable film, comprising a mounting frame (1), wherein the front and rear sides of the middle end of the mounting frame (1) are rotatably connected to lower pressure rollers (2), a transmission box (3) is provided on the right side of the mounting frame (1), and the gear inside the transmission box (3) is fixedly connected to the right end of the lower pressure roller (2), a motor (4) is provided at four locations on the top surface of the mounting frame (1), and the lower output shaft of the motor (4) passes through the mounting frame (1) and is fixedly connected to the upper end of a threaded rod (5), a receiving roller (10) is provided at the lower front end of the mounting frame (1), the lower end of the threaded rod (5) is threadedly connected to the front and rear threaded holes of a moving beam (6), and the front and rear end protrusions of the moving beam (6) are slidably connected to the internal slide groove of the mounting frame (1), and two groups of upper pressure rollers (7) are rotatably connected between the moving beams (6); Features: A shaping mechanism (8), wherein the shaping mechanism (8) is provided at the front side of the middle end of the installation frame (1); a tension mechanism (9), wherein the tension mechanism (9) is provided at the middle end of the front of the installation frame (1); The shaping mechanism (8) further comprises: an L-shaped fixing block (81), two groups of L-shaped fixing blocks (81) are symmetrically arranged on the front side of the middle end of the installation frame (1), displacement sensors (82) are fixedly installed on the opposite surfaces of the two groups of L-shaped fixing blocks (81) on the front side of the middle end of the installation frame (1), and the lower end probes of the displacement sensors (82) are respectively fixedly connected to the left and right sides of the top surface of the displacement plate (83), the lower ends of the L-shaped fixing blocks (81) are respectively fixedly connected to the left and right sides of the top surface of the cooling plate (84), the front and rear sides of the cooling plate (84) are symmetrically provided with arc-shaped anti-scratch blocks (85), and the bottom surface of the cooling plate (84) is fixedly connected to the heat exchanger (86).

2. The calender for automatic breathable film processing according to claim 1, characterized in that: The tension mechanism (9) comprises: a fixing member (91), the left and right sides of the middle end of the front of the installation frame (1) are fixedly connected with the fixing member (91), and the fixing member (91) is respectively rotatably connected to the left and right sides of the rear rotating shaft of the transmission belt (92), the top of the transmission belt (92) is provided with an infrared detector (93), the front ends of the left and right sides of the transmission belt (92) are provided with a cylinder (94), the front end telescopic rod of the cylinder (94) is fixedly connected to the rear of the rotating block (95), and the center hole of the rotating block (95) is rotatably connected to the side of the roller body of the tensioning roller (96).

3. The calender for automatic breathable film processing according to claim 1, characterized in that: The top surface of the cooling plate (84) and the upper side of the lower pressure roller (2) are located in the same plane, and the top surface of the cooling plate (84) and the top surface of the middle end of the transmission belt (92) are located in the same plane.

4. The calender for automatic breathable film processing according to claim 3, characterized in that: The top surface of the middle end of the transmission belt (92) and the upper side of the tensioning roller (96) are located in the same plane, and the top surface of the middle end of the transmission belt (92) and the infrared generating surface of the bottom surface of the middle end of the infrared detector (93) are three centimeters apart.

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