A paper fabric coating device

Abstract

This utility model discloses a paper coating device, including a coating device body, a support base fixedly connected to the bottom of the coating device body, and an unwinding roller and a rewinding roller disposed inside the coating device body. The precise engagement of the stop block and gear teeth, along with the return spring, ensures stable tension after adjustment, reducing paper offset and vibration in the coating area. Furthermore, the precise positioning of the limiting components ensures neat coating edges and accurate coating position, significantly improving coating precision and subsequent processing quality. This greatly enhances the applicability and compatibility of the equipment. In terms of cost control, stable tension control reduces paper breakage and product scrap, improving material utilization; enhanced equipment adaptability reduces investment in equipment replacement; and the precise structural design reduces component wear, lowering maintenance costs and better meeting diverse production needs.

Description

Technical Field

[0001] This utility model relates to the field of special paper production technology, specifically a paper fabric coating device. Background Technology

[0002] Paper coating refers to the process of applying various functional coatings (such as glue, ink, waterproofing agent, coating agent, adhesive, etc.) to the surface of paper, cardboard, and other paper materials using specific tools or equipment. A paper coating device is an industrial equipment used to apply various coatings to the surface of paper, cardboard, and other paper materials. Its main function is to apply coatings (such as glue, ink, waterproofing agent, coating agent, etc.) evenly to the surface of the paper substrate in an automated or semi-automatic manner, thereby giving the paper specific properties (such as waterproofing, abrasion resistance, and enhanced strength) or meeting the needs of subsequent processing (such as facilitating printing and bonding).

[0003] In existing technologies, traditional paper coating devices cannot adjust the tension of the conveyed paper, making it prone to wrinkling or stretching deformation. Different batches and materials of paper have varying tension characteristics, which are also affected by temperature and humidity. Without tension adjustment, the paper may tear due to excessive tension or wrinkle due to insufficient tension, leading to uneven coating distribution, missed areas, and material accumulation. Secondly, coating accuracy and consistency are poor. Unstable tension causes the paper to shift or vibrate in the coating area, resulting in uneven coating edges and coating position deviations, affecting subsequent processing quality. Furthermore, the applicable range is narrow, and compatibility is poor. It can only adapt to specific types or specifications of paper, making it difficult to meet new requirements when changing materials or adjusting width, thus limiting the equipment's versatility. This increases material waste and production costs. Product scrap, reduced production speed, and damage to fragile paper caused by tension issues all exacerbate waste; uneven mechanical stress may also damage components, increasing maintenance costs. Such devices are only suitable for simple scenarios with single, fixed specifications and cannot meet diverse production needs. Utility Model Content

[0004] The purpose of this utility model is to provide a paper fabric coating device to solve the problems mentioned in the background art, such as poor coating accuracy and consistency, increased maintenance costs, and difficulty in meeting diverse production needs caused by paper fabric coating devices that cannot adjust tension.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a paper fabric coating device, comprising a coating device body, a support base fixedly connected to the bottom of the coating device body, an unwinding roller and a rewinding roller disposed inside the coating device body, a paint box fixedly connected to the top of the coating device body, a coating assembly disposed on the coating device body, a limiting assembly disposed on the coating device body, a first rotating shaft rotatably connected inside the coating device body, a rotating handle fixedly connected to the first rotating shaft, a first gear fixedly connected to the first rotating shaft, and a gear rotatably connected inside the coating device body. The device comprises a second rotating shaft, a second gear fixedly connected to the second rotating shaft, a first guide plate fixedly connected to the second rotating shaft, a third rotating shaft rotatably connected inside the body of the coating device, a second guide plate fixedly connected to the third rotating shaft, a first limiting rod and a second limiting rod disposed between the second guide plate and the first guide plate, a support connecting block fixedly connected to one side of the body of the coating device, a stop rod rotatably connected inside the support connecting block, and a return spring fixedly connected between the stop rod and the support connecting block. The return spring pushes the stop rod into the first gear to restrict the rotation of the first gear.

[0006] In a preferred embodiment of this technical solution, the stop lever is provided with a locking block corresponding to the tooth groove of the first gear, and the locking block of the stop lever is engaged with the inside of the first gear.

[0007] In the preferred embodiment of this technical solution, the body of the coating device has a groove at the corresponding position of the third rotating shaft, and the third rotating shaft rotates inside the groove.

[0008] According to the preferred embodiment of this technical solution, the limiting component includes a connecting limiting block fixedly connected to the second guide plate, a drive motor fixedly connected to the connecting limiting block, a rotating threaded rod fixedly connected to the output end of the drive motor, a first fixed limiting post fixedly connected inside the second guide plate, a sliding threaded block threadedly connected to the rotating threaded rod, a fixed mounting post fixedly connected inside the first guide plate, a sliding limiting block slidably connected to the fixed mounting post, and a first limiting rod and a second limiting rod fixedly connected between the sliding limiting block and the sliding threaded block.

[0009] In a preferred embodiment of this technical solution, the second guide plate and the first guide plate are provided with grooves at corresponding positions of the sliding limit block and the sliding threaded block, and the sliding limit block and the sliding threaded block slide inside the grooves.

[0010] In the preferred embodiment of this technical solution, two first fixed limiting posts are provided, and the two first fixed limiting posts are symmetrically fixedly connected inside the second guide plate.

[0011] According to the preferred embodiment of this technical solution, the coating assembly includes a fixed mounting rod fixedly connected inside the coating device body, a sliding support seat slidably connected to the fixed mounting rod, a connecting spring fixedly connected between the sliding support seat and the coating device body, a coating roller rotatably connected inside the sliding support seat, and a conveying pipe fixedly connected between the sliding support seat and the paint box.

[0012] Based on the preferred embodiment of this technical solution, two fixed mounting rods are provided, and the two fixed mounting rods are symmetrically fixedly connected inside the body of the coating device.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the cooperation of the first and second guide discs and the limiting rod, combined with gear transmission and a rotating handle, the tension of the paper conveying path can be flexibly adjusted. This adapts to the tension characteristics of different batches and materials of paper, as well as temperature and humidity changes, effectively preventing paper tearing due to excessive tension or wrinkling due to insufficient tension. This fundamentally solves the core pain point of traditional equipment's inability to adjust tension. Simultaneously, the precise cooperation between the stop lever block and the gear teeth, along with the return spring, ensures stable tension after adjustment, reducing paper offset and vibration in the coating area. Combined with the precise positioning of the limiting components, this guarantees neat coating edges and accurate coating positions, significantly improving coating accuracy and subsequent processing quality. Furthermore, by adjusting the guide disc spacing and the limiting rod position, it can adapt to different paper widths and is compatible with various materials, eliminating the need for significant equipment adjustments when changing paper types, greatly expanding the equipment's applicability and compatibility. In terms of cost control, stable tension control reduces paper breakage and product scrap, improving material utilization; enhanced equipment adaptability reduces investment in equipment replacement; and the precise structural design reduces component wear, lowering maintenance costs and better meeting diverse production needs.

[0015] 2. The fixed mounting rod provides a stable installation and sliding foundation for the sliding support, ensuring smooth movement of the sliding support along a fixed direction and providing reliable protection for the position adjustment of the coating roller. The sliding design of the sliding support allows the coating roller to flexibly adjust the distance between itself and the paper fabric, adapting to the coating needs of paper fabrics of different thicknesses and facilitating quick disassembly or replacement of the coating roller during equipment maintenance, thus improving the adaptability and maintenance convenience of the equipment. The elasticity of the connecting spring provides continuous buffering force to the sliding support, maintaining appropriate and uniform pressure between the coating roller and the paper fabric, preventing damage to the paper fabric due to excessive pressure or uneven coating due to insufficient pressure, ensuring the stability of coating quality. The feed pipe stably delivers the paint from the paint box to the coating roller, ensuring that the coating roller always has sufficient paint for coating, avoiding material interruption, ensuring the continuity of coating operations, and improving overall work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of the paper fabric coating device of this utility model;

[0017] Figure 2 This is a schematic diagram of the coating component structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the main structure of the coating device of this utility model;

[0019] Figure 4 This is a schematic diagram of the support connecting block structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the limiting component structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the second guide plate structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the first guide plate structure of this utility model.

[0023] In the diagram: 1. Painting device body; 2. Support base; 3. Unwinding roller; 4. Rewinding roller; 5. Paint box; 701. Fixed mounting rod; 702. Sliding support seat; 703. Connecting spring; 704. Feed pipe; 705. Painting roller; 801. First rotating shaft; 802. Rotating handle; 803. First gear; 804. Second rotating shaft; 805. Second gear; 806. First guide plate; 807. Third rotating shaft; 808. Second guide plate; 809. First limiting rod; 810. Second limiting rod; 811. Support connecting block; 812. Stop bar; 813. Return spring; 901. Connecting limiting block; 902. Drive motor; 903. Rotating threaded rod; 904. First fixed limiting post; 905. Sliding threaded block; 906. Fixed mounting post; 907. Sliding limiting block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-7This utility model provides an embodiment including a coating device body 1, a support base 2 fixedly connected to the bottom of the coating device body 1, an unwinding roller 3 and a rewinding roller 4 disposed inside the coating device body 1, a paint box 5 fixedly connected to the top of the coating device body 1, a coating assembly disposed on the coating device body 1, a limiting assembly disposed on the coating device body 1, a first rotating shaft 801 rotatably connected inside the coating device body 1, a rotating handle 802 fixedly connected to the first rotating shaft 801, a first gear 803 fixedly connected to the first rotating shaft 801, a second rotating shaft 804 rotatably connected inside the coating device body 1, a second gear 805 fixedly connected to the second rotating shaft 804, and a fixed... A first guide disc 806 is connected to the second rotating shaft 804; a third rotating shaft 807 is rotatably connected inside the body 1 of the coating device; a second guide disc 808 is fixedly connected to the third rotating shaft 807; a first limiting rod 809 and a second limiting rod 810 are provided between the second guide disc 808 and the first guide disc 806; a support connecting block 811 is fixedly connected to one side of the body 1 of the coating device; a stop rod 812 is rotatably connected inside the support connecting block 811; and a return spring 813 is fixedly connected between the stop rod 812 and the support connecting block 811. The return spring 813 pushes the stop rod 812 into the first gear 803, restricting the rotation of the first gear 803, and the support base 2 stabilizes the overall structure. The unwind roller 3 releases the paper fabric, which is then conveyed to the coating assembly after being limited by the limiting component. The coating roller 705 coats the paper fabric. During rotation, the rotating handle 802 drives the gear transmission, causing the first and second guide discs to rotate, which, in conjunction with the limiting rod, adjusts the position of the paper fabric. The return spring 813 pushes the stop rod 812 into the gear to fix the adjusted position. The coated paper fabric is then wound up by the take-up roller 4, achieving continuous and stable coating.

[0026] Please see Figure 3-4 A further solution based on this embodiment is as follows: a locking block corresponding to the tooth groove of the first gear 803 is provided on the stop lever 812. The locking block of the stop lever 812 is engaged with the inside of the first gear 803. By providing a locking block corresponding to the tooth groove of the first gear 803 on the stop lever 812, the locking block can be accurately embedded in the tooth groove when the stop lever 812 is inserted into the inside of the first gear 803, which greatly improves the limiting effect of the stop lever 812 on the first gear 803 and avoids slippage between the stop lever 812 and the first gear 803.

[0027] Please see Figure 3-4A further solution based on this embodiment is as follows: the body 1 of the coating device has a groove at the corresponding position of the third rotating shaft 807. The third rotating shaft 807 rotates inside the groove. By setting a locking block on the stop rod 812 that corresponds to the tooth groove of the first gear 803, the locking block can be accurately embedded in the tooth groove when the stop rod 812 is inserted into the first gear 803, which greatly improves the limiting effect of the stop rod 812 on the first gear 803 and avoids slippage between the stop rod 812 and the first gear 803.

[0028] Please see Figure 3-4 A further solution based on this embodiment is as follows: the limiting component includes a connecting limiting block 901 fixedly connected to the second guide plate 808, a drive motor 902 fixedly connected to the connecting limiting block 901, a rotating threaded rod 903 fixedly connected to the output end of the drive motor 902, a first fixed limiting post 904 fixedly connected inside the second guide plate 808, a sliding threaded block 905 threadedly connected to the rotating threaded rod 903, a fixed mounting post 906 fixedly connected inside the first guide plate 806, and a slidingly connected to the fixed mounting post 904. The sliding limit block 907 on 06, the first limit rod 809 and the second limit rod 810 fixedly connected between the sliding limit block 907 and the sliding threaded block 905, can stably fix the drive motor 902 on the second guide plate 808 by connecting the limit block 901, ensuring that the drive motor 902 will not shake during operation and providing a stable power source for subsequent transmission; the drive motor 902 drives the rotating threaded rod 903 to rotate, without manual operation, realizing automatic adjustment, improving adjustment efficiency and accuracy, and reducing errors caused by manual adjustment.

[0029] Please see Figure 5-6 A further solution based on this embodiment is as follows: the second guide plate 808 and the first guide plate 806 have grooves at the corresponding positions of the sliding limit block 907 and the sliding threaded block 905. The sliding limit block 907 and the sliding threaded block 905 slide inside the grooves. By opening grooves on the second guide plate 808 and the first guide plate 806 at the positions corresponding to the sliding limit block 907 and the sliding threaded block 905, a precise sliding track is provided for the sliding limit block 907 and the sliding threaded block 905, ensuring that the two will not deviate from the preset direction during the sliding process, and ensuring that the adjustment action of the first limit rod 809 and the second limit rod 810 is precise and controllable.

[0030] Please see Figure 5-6A further solution based on this embodiment is as follows: two first fixed limiting posts 904 are provided, and the two first fixed limiting posts 904 are symmetrically fixedly connected inside the second guide plate 808. By providing two symmetrically distributed first fixed limiting posts 904, the sliding threaded block 905 can be limited and supported from both sides. Compared with a single fixed limiting post, the stability of the sliding threaded block 905 during sliding can be greatly improved, preventing the sliding threaded block 905 from tilting or shaking during movement along the rotating threaded rod 903, and ensuring that the sliding threaded block 905 always slides smoothly along a straight line.

[0031] Please see Figure 2 A further solution based on this embodiment is as follows: the coating assembly includes a fixed mounting rod 701 fixedly connected inside the coating device body 1, a sliding support 702 slidably connected to the fixed mounting rod 701, a connecting spring 703 fixedly connected between the sliding support 702 and the coating device body 1, a coating roller 705 rotatably connected inside the sliding support 702, and a feed pipe 704 fixedly connected between the sliding support 702 and the paint box 5. The fixed mounting rod 701 provides a stable mounting and sliding foundation for the sliding support 702, ensuring that the sliding support 702 can move smoothly in a fixed direction, thus providing a guarantee for the position adjustment of the coating roller 705. By sliding the sliding support 702, the coating roller 705 can be driven to adjust the distance between itself and the paper fabric, adapting to the coating needs of paper fabrics of different thicknesses, and facilitating the disassembly or replacement of the coating roller 705 during device maintenance.

[0032] Please see Figure 2 A further solution based on this embodiment is as follows: two fixed mounting rods 701 are provided, and the two fixed mounting rods 701 are symmetrically fixedly connected inside the body 1 of the coating device. By providing two symmetrical fixed mounting rods 701, the sliding support seat 702 can be supported and guided from both sides, so that the sliding support seat 702 is subjected to more balanced forces during the sliding process, avoiding unilateral tilting or jamming, and ensuring that the sliding support seat 702 drives the coating roller 705 to move smoothly.

[0033] Working Principle: The support base 2 provides stable support for the overall structure, ensuring stability during operation. The unwinding roller 3 releases the paper fabric to be coated. The paper fabric first enters the limiting component area. The drive motor 902 drives the rotating threaded rod 903 to rotate, causing the sliding threaded block 905 to slide along the first fixed limiting post 904. At the same time, it drives the sliding limiting block 907 to move on the fixed mounting post 906. Then, the distance is adjusted by the first limiting rod 809 and the second limiting rod 810 to achieve precise limiting of paper fabrics of different widths, preventing transmission deviation. After being limited, the paper fabric is conveyed to the coating component. The paint box 5 conveys the paint to the coating roller 705 through the feed pipe 704. The sliding support base 702 slides on the fixed mounting rod 701, cooperating with the connecting... The elastic action of the spring 703 maintains appropriate pressure between the coating roller 705 and the paper fabric, ensuring uniform coating. If the paper fabric transmission position needs to be adjusted, the stop lever 812 is pulled to compress the reset spring 813, disengaging it from the tooth groove of the first gear 803. Rotating the handle 802 drives the first gear 803 to rotate via the first rotating shaft 801, which in turn drives the second rotating shaft 804 to rotate via the second gear 805, thereby driving the first guide plate 806 to rotate. Through the limit rod, the second guide plate 808 and the third rotating shaft 807 move along the slide groove. After the position adjustment is completed, the reset spring 813 pushes the stop lever 812 back into the fixed position in the tooth groove.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paper fabric coating device, comprising a coating device body (1), characterized in that: It also includes a support base (2) fixedly connected to the bottom of the coating device body (1), an unwinding roller (3) and a winding roller (4) disposed inside the coating device body (1), a paint box (5) fixedly connected to the top of the coating device body (1), a coating assembly disposed on the coating device body (1), a limiting assembly disposed on the coating device body (1), a first rotating shaft (801) rotatably connected inside the coating device body (1), a rotating handle (802) fixedly connected to the first rotating shaft (801), a first gear (803) fixedly connected to the first rotating shaft (801), a second rotating shaft (804) rotatably connected inside the coating device body (1), a second gear (805) fixedly connected to the second rotating shaft (804), and a second gear (805) fixedly connected to the second rotating shaft (804). (804) includes a first guide plate (806), a third rotating shaft (807) rotatably connected inside the body (1) of the coating device, a second guide plate (808) fixedly connected to the third rotating shaft (807), a first limiting rod (809) and a second limiting rod (810) provided between the second guide plate (808) and the first guide plate (806), a support connecting block (811) fixedly connected to one side of the body (1) of the coating device, a stop rod (812) rotatably connected inside the support connecting block (811), and a return spring (813) fixedly connected between the stop rod (812) and the support connecting block (811). The stop rod (812) is pushed into the first gear (803) by the set return spring (813) to restrict the rotation of the first gear (803).

2. The paper fabric coating device according to claim 1, characterized in that: The stop lever (812) is provided with a locking block corresponding to the tooth groove of the first gear (803), and the locking block of the stop lever (812) is engaged with the inside of the first gear (803).

3. The paper fabric coating device according to claim 1, characterized in that: The body of the coating device (1) has a groove at the corresponding position of the third rotating shaft (807), and the third rotating shaft (807) rotates inside the groove.

4. The paper fabric coating device according to claim 1, characterized in that: The limiting assembly includes a connecting limiting block (901) fixedly connected to the second guide plate (808), a drive motor (902) fixedly connected to the connecting limiting block (901), a rotating threaded rod (903) fixedly connected to the output end of the drive motor (902), a first fixed limiting post (904) fixedly connected inside the second guide plate (808), a sliding threaded block (905) threadedly connected to the rotating threaded rod (903), a fixed mounting post (906) fixedly connected inside the first guide plate (806), a sliding limiting block (907) slidably connected to the fixed mounting post (906), and a first limiting rod (809) and a second limiting rod (810) fixedly connected between the sliding limiting block (907) and the sliding threaded block (905).

5. A paper fabric coating device according to claim 4, characterized in that: The second guide plate (808) and the first guide plate (806) have grooves at corresponding positions of the sliding limit block (907) and the sliding threaded block (905), and the sliding limit block (907) and the sliding threaded block (905) slide inside the grooves.

6. The paper fabric coating device according to claim 4, characterized in that: There are two first fixed limiting posts (904), and the two first fixed limiting posts (904) are symmetrically fixedly connected inside the second guide plate (808).

7. The paper fabric coating device according to claim 1, characterized in that: The coating assembly includes a fixed mounting rod (701) fixedly connected inside the coating device body (1), a sliding support (702) slidably connected to the fixed mounting rod (701), a connecting spring (703) fixedly connected between the sliding support (702) and the coating device body (1), a coating roller (705) rotatably connected inside the sliding support (702), and a feed pipe (704) fixedly connected between the sliding support (702) and the paint box (5).

8. A paper fabric coating device according to claim 7, characterized in that: There are two fixed mounting rods (701), and the two fixed mounting rods (701) are symmetrically fixedly connected inside the body (1) of the coating device.

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