Feeding structure for mask gauze preparation

Abstract

The feeding structure comprises a bottom plate, a front roller frame and a rear roller frame, the front roller frame and the rear roller frame are fixed to the two sides of the top end of the bottom plate respectively, and a front traction roller and an adjustable compression roller structure are installed on the two sides of the interior of the front roller frame respectively. A first rubber-coated carrier roller and a second rubber-coated carrier roller are rotationally mounted on the upper side and the lower side in the rear roller frame correspondingly, and a rear traction roller is rotationally mounted on the other side in the rear roller frame. According to the utility model, the outer-layer gauze material belt, the middle-layer gauze material belt and the inner-layer gauze material belt are respectively arranged on the first rubber-coated carrier roller, the second rubber-coated carrier roller and the front traction roller, and are finally introduced between the rear traction roller and the self-falling compression roller structure; synchronous and same-direction rotation of the front traction roller and the rear traction roller is achieved through the stepping motor and the multi-synchronous-belt transmission assembly, so that synchronous feeding of three layers of material belts is achieved.

Description

Technical Field

[0001] This utility model relates to the field of mask gauze processing technology, specifically a feeding structure for mask gauze preparation. Background Technology

[0002] Masks generally consist of three layers: an outer layer, a middle layer, and an inner layer. The outer layer is a waterproof layer that effectively blocks droplets and other liquids, preventing the spread of viruses or bacteria through droplets. The middle layer is a filter layer, usually made of meltblown nonwoven fabric, which can filter out tiny particles, including bacteria and viruses. The inner layer is a skin-friendly layer that absorbs moisture and wicks away sweat, ensuring wearing comfort. During processing, the layers are laminated using a thermoforming machine. To ensure a stable supply of each layer of fabric to the thermoforming machine, a roller feeding structure is required. This structure typically consists of a feeding roller, a guide roller, a tensioning device, and a drive device. The feeding roller is the core component, possessing good wear resistance and friction to ensure stable movement of the fabric during feeding. The guide roller guides the fabric along a predetermined path, preventing entanglement or deviation. The tensioning device adjusts the tension of the feeding roller to ensure uniform supply. The drive device controls the rotation speed of the feeding roller via a motor, precisely adjusting the supply amount and speed. The working principle of the roller conveyor feeding structure relies on the control of friction and tension. The motor drives the feeding roller to rotate, and the gauze is pulled and moved under the action of friction. For example, the feeding structure for mask gauze preparation disclosed in the authorization announcement number CN208869052U consists of a support frame assembly and a lifting feeding assembly used in conjunction with the support frame assembly. Its design structure is reasonable. The structure of the support frame assembly and the lifting feeding assembly used in conjunction can achieve precise, efficient and stable gauze feeding operation for the gauze slitting machine. At the same time, it can realize adaptive feeding lifting adjustment operation as needed. However, the above technical solution mainly conveys and supplies single-layer mask gauze during use, that is, it is for the supply of a single gauze material. It lacks the coordinated control of multi-layer materials. As a result, in actual operation, the supply speed of a certain layer will affect the supply of other layers, causing asynchrony between different layers, which in turn affects the overall structure and tightness of the mask after subsequent hot pressing and bonding. Utility Model Content

[0003] The purpose of this invention is to provide a feeding structure for the preparation of mask gauze. The outer layer gauze strip, the middle layer gauze strip, and the inner layer gauze strip are respectively located on the first rubber-coated roller, the second rubber-coated roller, and the front traction roller, and are finally introduced between the rear traction roller and the self-falling pressure roller structure. The front traction roller and the rear traction roller rotate synchronously in the same direction by a stepper motor and a multi-synchronous belt drive assembly. The friction between the rear traction roller and the self-falling pressure roller structure is used to ensure that the outer, middle, and inner layers of gauze strips are synchronously transported into the mask thermoforming machine, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a feeding structure for preparing mask gauze, comprising a base plate and a front roller frame and a rear roller frame fixed on both sides of the top of the base plate respectively. A front traction roller and an adjustable pressure roller structure are respectively installed on both sides inside the front roller frame. A first rubber-coated roller and a second rubber-coated roller are respectively rotatably installed on the upper and lower sides inside the rear roller frame. A rear traction roller is rotatably installed on the other side inside the rear roller frame. A self-falling pressure roller structure is provided inside the rear roller frame above the rear traction roller. The self-falling pressure roller structure presses three layers of gauze material onto the rear traction roller. A multi-synchronous belt drive assembly is provided on one outer wall of the rear roller frame to enable the front roller frame and the rear traction roller to rotate synchronously and in the same direction. A stepper motor is installed on the other outer wall of the rear roller frame to provide rotational force to the multi-synchronous belt drive assembly.

[0005] Preferably, the adjustable pressure roller structure includes a T-shaped internal thread seat fixed on one side of the outer wall of the front roller frame, a shaft tail seat slidably mounted on the two inner walls of the front roller frame, and two rubber rollers rotatably mounted on opposite outer walls of the two shaft tail seats. A threaded shaft is installed inside the T-shaped internal thread seat, and one end of the threaded shaft is rotatably connected to one side of the outer wall of one of the shaft tail seats.

[0006] Preferably, both inner walls of the front roller frame are provided with hollow grooves for the shaft tail seat to slide.

[0007] Preferably, the multi-synchronous belt drive assembly includes a drive shaft rotatably mounted on the outer wall of one side of the rear roller frame, a first synchronous drive structure of pulleys installed between the drive shaft and the rear traction roller, and a main shaft installed at the end of the stepper motor output shaft. One end of the main shaft extends through to the outside of the rear roller frame and is equipped with a second synchronous drive structure of pulleys for connecting the front traction roller and the drive shaft.

[0008] Preferably, anti-deviation discs are bolted to both ends of the surface of the rear traction roller.

[0009] Preferably, the self-falling pressure roller structure includes swing arms hinged to the left and right outer walls of the rear roller frame and a coarse roller rotatably mounted between the two swing arms.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This feeding structure for mask gauze preparation sets the outer layer gauze strip, the middle layer gauze strip, and the inner layer gauze strip on the first rubber-coated roller, the second rubber-coated roller, and the front traction roller, respectively, and finally introduces them between the rear traction roller and the self-falling pressure roller structure. A stepper motor and a multi-synchronous belt drive assembly are used to achieve synchronous rotation of the front and rear traction rollers, enabling synchronous supply of the three layers of material strips. The precise control of the stepper motor and the multi-synchronous belt drive assembly ensures synchronous rotation of the front and rear traction rollers, guaranteeing the coordination of the three layers of material during transport. Furthermore, the friction between the rear traction roller and the self-falling pressure roller... This ensures the stability and consistency of the three-layer gauze strip during the conveying process. The effective use of friction prevents the material from sliding or misaligning during conveying, ensuring that each layer of material is precisely aligned when entering the thermoforming machine. This avoids air leakage or substandard issues caused by misalignment or uneven bonding of the layers, thus improving the overall structural performance of the mask. Secondly, due to the coordinated work of the front traction roller, rear traction roller, and self-falling pressure roller, operators do not need to frequently adjust the supply speed and tension of each layer of material, reducing the complexity of manual operation. The conveying speed and gauze strip thickness can be changed by adjusting the parameters of the stepper motor and the spacing between the 4 and 3, to adapt to the characteristics of different materials and production needs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0013] Figure 3 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0014] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0015] Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0016] Figure 6 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 .

[0017] In the diagram: 1. Base plate; 2. Front roller frame; 3. Front traction roller; 4. Adjustable pressure roller structure; 401. T-shaped internal thread seat; 402. Threaded shaft; 403. Shaft tail seat; 404. Rubber roller; 5. Rear roller frame; 501. First rubber-coated idler roller; 502. Second rubber-coated idler roller; 6. Main shaft; 7. Rear traction roller; 8. Anti-deviation plate; 9. Self-falling pressure roller structure; 901. Swing arm; 902. Coarse roller; 10. Multi-synchronous belt drive assembly; 1001. Drive shaft; 1002. Pulley synchronous drive structure one; 1003. Pulley synchronous drive structure two; 11. Stepper motor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] Example 1, by Figures 1 to 4 The present invention includes a base plate 1 and a front roller frame 2 and a rear roller frame 5 fixed on both sides of the top of the base plate 1. A front traction roller 3 and an adjustable pressure roller structure 4 are respectively installed on both sides inside the front roller frame 2. A first rubber-coated roller 501 and a second rubber-coated roller 502 are rotatably installed on the upper and lower sides inside the rear roller frame 5. A rear traction roller 7 is rotatably installed on the other side inside the rear roller frame 5. A self-falling pressure roller structure 9 is provided inside the rear roller frame 5 above the rear traction roller 7. The self-falling pressure roller structure 9 presses the three layers of yarn fabric onto the rear traction roller 7. A multi-synchronous belt drive assembly 10 is provided on one outer wall of the rear roller frame 5 to make the front roller frame 2 and the rear traction roller 7 rotate synchronously and in the same direction. A stepper motor 11 is installed on the other outer wall of the rear roller frame 5 to provide rotational force to the multi-synchronous belt drive assembly 10.

[0020] The operator can install a motor controller for controlling the stepper motor 11 on one side of the outer wall of the front roller frame 2 or the rear roller frame 5. The motor controller is not shown in the attached figure. The motor controller is used to set the stepper motor 11 to work in the set direction and speed.

[0021] Example 2, based on Example 1, is... Figure 4 , Figure 5 and Figure 6 The adjustable pressure roller structure 4 includes a T-shaped internal thread seat 401 fixed on one side of the outer wall of the front roller frame 2, a shaft tail seat 403 slidably mounted on the two inner walls of the front roller frame 2, and a rubber roller 404 rotatably mounted on the two shaft tail seats 403 relative to the outer wall. A threaded shaft 402 is installed inside the T-shaped internal thread seat 401, and one end of the threaded shaft 402 is rotatably connected to one side of the outer wall of one of the shaft tail seats 403.

[0022] Both inner walls of the front roller frame 2 are provided with hollow grooves for the shaft tail seat 403 to slide. The inner layer of gauze material passes between the front traction roller 3 and the adjustable pressure roller structure 4. The operator adjusts the gap between the front traction roller 3 and the adjustable pressure roller structure 4 according to the thickness of the inner layer of gauze material to ensure that the inner layer of gauze material obtains effective rolling friction. The operator manually rotates the threaded shaft 402, which drives the shaft tail seat 403 and the rubber roller 404 to slide towards the front traction roller 3 until the rubber roller 404 and the front traction roller 3 apply sufficient contact pressure to the inner layer of gauze material to provide stable conveying power for the inner layer of gauze material and ensure that the material passes smoothly.

[0023] The multi-synchronous belt drive assembly 10 includes a drive shaft 1001 rotatably mounted on the outer wall of one side of the rear roller frame 5, a first pulley synchronous drive structure 1002 installed between the drive shaft 1001 and the rear traction roller 7, and a main shaft 6 installed at the end of the output shaft of the stepper motor 11. One end of the main shaft 6 extends through to the outside of the rear roller frame 5 and is equipped with a second pulley synchronous drive structure 1003 for connecting the front traction roller 3 and the drive shaft 1001. Anti-deviation discs 8 are bolted to both ends of the surface of the rear traction roller 7. The anti-deviation discs 8 are used to reduce the rolling deviation of the material belt.

[0024] The output shaft of the stepper motor 11 drives the main shaft 6 to rotate. The main shaft 6 then drives the transmission shaft 1001 and the front traction roller 3 to rotate through the pulley synchronous transmission structure 1003. The transmission shaft 1001 drives the rear traction roller 7 to rotate through the pulley synchronous transmission structure 1002. This achieves multi-roller synchronous transmission. Synchronous belt transmission is quieter than chain transmission, and synchronous belt maintenance is simpler.

[0025] The self-falling pressure roller structure 9 includes swing arms 901 hinged to the left and right outer walls of the rear roller frame 5 and a coarse roller 902 rotatably mounted between the two swing arms 901. The coarse roller 902 and the swing arms 901 press themselves onto the three layers of gauze fabric according to the thickness of the material, ensuring sufficient pressure between the three layers of gauze fabric.

[0026] In this embodiment, the overall operating status of the structure is first checked, including the power connection status of the stepper motor 11, the electrical connection status between the stepper motor 11 and the external motor controller, the lubrication status of each roller, and the tension of the multi-synchronous belt drive assembly 10. Simultaneously, it is ensured that the three layers of fabric belt—outer, middle, and inner—are ready and correctly placed on the first rubber-coated idler roller 501, the second rubber-coated idler roller 502, and the front traction roller 3, respectively. At this time, the inner layer fabric belt needs to be placed from the front traction roller 3 and the adjustable pressure roller structure 4. The material passes through the rear traction roller 7 and the self-falling pressure roller structure 9 until the outer, middle, and inner layers all pass between them, finally connecting to the mask thermoforming machine. After preparation, the operator turns on the power to the stepper motor 11, ensuring the power supply is normal, and sets the speed of the stepper motor 11 through the motor controller. The rotational power of the stepper motor 11 is then transmitted to the front traction roller 3 and the rear traction roller 7 through the multi-synchronous belt drive assembly 10. At this time, the front traction roller 3 and the rear traction roller 7 rotate synchronously in the same direction. Since the three layers of gauze fabric are all located on the rear traction roller 7, Between the self-falling pressure roller structure 9, during the rolling process, the self-falling pressure roller structure 9 presses the three layers of yarn fabric together. That is, the self-falling pressure roller structure 9 applies pressure to the yarn fabric strip and the rear traction roller 7 through gravity, so that each layer of yarn fabric strip has friction on the rear traction roller 7. Thus, the rear traction roller 7 and the self-falling pressure roller structure 9 provide sufficient support and friction for the three layers of yarn fabric, ensuring smooth material conveying. During the conveying process, the staff should monitor the tension and connection of each layer of material at any time. If any layer of material is found to be loose or misaligned, The tension of the front and rear traction rollers needs to be adjusted immediately to ensure that the material maintains a good connection when entering the hot press forming machine. During this process, the distance between the front traction roller 3 and the adjustable pressure roller structure 4 can be adjusted. After the three-layer gauze strip enters the hot press forming machine smoothly, the hot press forming machine completes the hot pressing bonding of the three-layer gauze strip. The hot-pressed gauze strip is connected to the external winding equipment. At this time, the winding equipment also applies winding traction force to the hot-pressed gauze strip and the three-layer gauze strip before hot pressing until the gauze strip is processed.

Claims

1. A feed structure for the preparation of mask gauze, characterized by: The application relates to a three-layer yarn cloth material pressing device, which comprises a bottom plate (1) and front roller frames (2) and rear roller frames (5) fixed on both sides of the top end of the bottom plate (1), the inside of each front roller frame (2) is provided with a front traction roller (3) and an adjustable pressing roller structure (4), the upper and lower sides of the inside of each rear roller frame (5) are rotatably provided with a first rubber-coated carrier roller (501) and a second rubber-coated carrier roller (502), the other side of the inside of each rear roller frame (5) is rotatably provided with a rear traction roller (7), the inside of the rear roller frame (5) above the rear traction roller (7) is provided with a self-falling pressing roller structure (9), the self-falling pressing roller structure (9) presses three layers of yarn cloth material on the rear traction roller (7), the outer wall of one side of the rear roller frame (5) is provided with a plurality of synchronous belt transmission assemblies (10) for synchronously rotating the front roller frame (2) and the rear traction roller (7) in the same direction, and the outer wall of the other side of the rear roller frame (5) is provided with a stepping motor (11) for providing rotary power to the plurality of synchronous belt transmission assemblies (10).

2. A feed structure for the preparation of mask gauze according to claim 1, characterized in that: The adjustable pressing roller structure (4) comprises a T-shaped internal thread seat (401) fixed on the outer wall of one side of the front roller frame (2), shaft tail seats (403) slidably arranged on the inner walls of the front roller frame (2), and rubber rollers (404) rotatably arranged on the outer walls opposite to the two shaft tail seats (403), a threaded shaft (402) is arranged in the T-shaped internal thread seat (401), and one end of the threaded shaft (402) is rotatably connected to the outer wall of one of the shaft tail seats (403).

3. A feed structure for the preparation of mask gauze according to claim 2, characterized in that: The inner walls of the front roller frame (2) are both provided with hollow grooves for the sliding of the shaft tail seats (403).

4. A feed structure for the preparation of mask gauze according to claim 1, characterized in that: The plurality of synchronous belt transmission assemblies (10) comprise a transmission shaft (1001) rotatably arranged on the outer wall of one side of the rear roller frame (5), a belt wheel synchronous transmission structure one (1002) arranged between the transmission shaft (1001) and the rear traction roller (7), and a main shaft (6) arranged at the output shaft end of the stepping motor (11), one end of the main shaft (6) penetrates through the outer wall of the rear roller frame (5) and is provided with a belt wheel synchronous transmission structure two (1003) for connecting the front traction roller (3) and the transmission shaft (1001).

5. A feed structure for the preparation of mask gauze according to claim 4, characterized in that: The both ends of the surface of the rear traction roller (7) are both provided with anti-deviation discs (8).

6. A feed structure for mask gauze preparation as claimed in claim 1, wherein: The self-falling pressing roller structure (9) comprises swing arms (901) hingedly arranged on the left and right outer walls of the rear roller frame (5) and a coarse roller (902) rotatably arranged between the two swing arms (901).

Images