Kraft paper coating roll gap adjusting mechanism
Patent Information
- Application Number
- CN202522613709.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-10
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-10
AI Technical Summary
[0005]为了克服传统的辊隙调节机构多基于简单的螺旋传动原理，但螺纹副对工作环境的要求高，涂胶工作环境湿热，胶料易挥发、飞溅并固化，容易对调节的螺纹副结构造成不良影响，且在作业机器的振动环境下，导致调节好的位置极易发生松脱和偏移，影响成品的质量的问题
[0015]通过装配板采用紧固件与涂胶辊的安装架之间进行连接固定，进行调节的过程中，通过伺服电机配合减速器带动蜗杆转动，通过蜗杆与蜗轮的配合，将转动传递给转轴，通过转盘旋转运动驱动连杆摆动，进而带动连接支架沿导向机构做精确直线位移，从而带动安装在装配板一侧的涂胶辊稳定的升降，调节涂胶辊与背辊之间的间隙，整体结构不采用螺纹副结构直接参与调节，采用连杆驱动进行调节，对作业环境要求更低，且蜗轮蜗杆精密传动结构均安装在隔板围成的空间内部，减少作业环境中的油污与挥发的胶料对传动结构造成的不良影响，有效提高环境适应性，且通过减速器与蜗轮蜗杆传动组合形成多级减速机制，既保证运动传递的精确性，又利用蜗轮蜗杆传动副的自锁特性及减速器自身的制动性能，形成双重防松脱结构，有效抵御机器振动对调节位置的干扰，确保间隙调节的长期稳定性与可靠性。
Smart Images
Figure CN224894554U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gluing equipment technology, and in particular to a kraft paper gluing roller gap adjustment mechanism. Background Technology
[0002] In the processing and manufacturing of kraft paper, gluing is a key subsequent process. By uniformly and quantitatively coating a layer of specific adhesive on the paper surface, the physical properties and appearance quality of kraft paper can be significantly improved. The core equipment for completing this process is the gluing machine, which mainly controls and transfers the adhesive by adjusting the tiny gap between the gluing roller and the back roller.
[0003] Currently, most commonly used roller gap adjustment mechanisms are based on a simple screw drive principle. Typically, a threaded seat is installed on the mounting bracket of the coating roller, and an adjusting screw is screwed on to directly push or pull the bearing seat of the coating roller. Alternatively, a lead screw passes through the threaded seat, and a servo motor drives the lead screw to rotate. Through the engagement of the threaded pair, the coating roller is directly moved up and down to adjust the gap. However, the threaded pair has high requirements for the working environment. The coating working environment is humid and hot, and the adhesive is easy to volatilize, splash, and solidify. Over time, it will penetrate the threaded pair, causing the screw and screw hole to rust and seize, resulting in the failure of the adjustment function. Maintenance and cleaning are extremely inconvenient. Moreover, in the vibration environment of the machine, the adjusted position is very easy to loosen and shift, affecting the quality of the finished product.
[0004] Therefore, to address the above problems, a kraft paper coating roller gap adjustment mechanism can be designed. The transmission mechanism is formed by a turntable and an eccentrically arranged connecting rod, which drives the coating roller to move linearly for adjustment. Furthermore, a worm gear and worm are added to effectively prevent the vibration generated during machine operation from affecting the adjustment position through their self-locking property. Utility Model Content
[0005] To overcome the problem that traditional roller gap adjustment mechanisms are mostly based on simple screw drive principles, but the threaded pair has high requirements for the working environment, the glue application environment is hot and humid, the glue is easy to volatilize, splash and solidify, which can easily have an adverse effect on the adjustment threaded pair structure. Moreover, in the vibration environment of the machine, the adjusted position is very easy to loosen and shift, affecting the quality of the finished product.
[0006] The technical solution of this utility model is as follows: a kraft paper coating roller gap adjustment mechanism, including a mounting box and a partition fixedly installed inside the mounting box. A rotating shaft is rotatably connected between the inner wall of the mounting box and the partition. One end of the rotating shaft passes through the partition and extends to the other side of the partition. A worm gear is fixedly installed on the periphery of the rotating shaft. A worm is rotatably connected inside the mounting box, and the worm meshes with the worm gear. A connecting bracket is slidably connected inside the mounting box. A transmission mechanism is provided between the rotating shaft and the connecting bracket. One end of the connecting bracket extends to the periphery of the mounting box and is fixedly connected to an assembly plate for mounting the coating roller frame. A guiding mechanism is provided between the connecting bracket and the mounting box. A driving mechanism is provided on the periphery of the mounting box.
[0007] Preferably, the mounting plate is connected and fixed to the mounting bracket of the coating roller using fasteners. During adjustment, the drive mechanism drives the worm gear to rotate. Through the cooperation of the worm gear and worm wheel, the rotation is transmitted to the rotating shaft, which drives the turntable to rotate. The rotation of the turntable drives the connecting rod to swing, which in turn drives the connecting bracket to make precise linear displacement along the guide mechanism. This causes the coating roller mounted on one side of the mounting plate to rise and fall stably, adjusting the gap between the coating roller and the back roller. The guide mechanism can guide the movement of the connecting bracket to ensure its stable rise and fall. The partition plate can be used to arrange the worm wheel and worm gear in an independent space to prevent adverse effects caused by harsh working environments.
[0008] Preferably, the transmission mechanism includes a turntable and a connecting rod. The turntable is fixedly installed at one end of the rotating shaft and is coaxial with the rotating shaft. One end of the connecting rod is hinged to one side of the turntable, and the other end of the connecting rod is hinged to the connecting bracket.
[0009] Preferably, the hinge axis between the connecting rod and the turntable is eccentrically set relative to the axis of the rotating shaft.
[0010] Preferably, reinforcing ribs are fixedly installed between the assembly plate and the connecting bracket.
[0011] Preferably, the guiding mechanism includes a guide sleeve fixedly installed inside the mounting box, a guide rod slidably connected inside the guide sleeve, and the upper end of the guide rod being fixedly connected to the connecting bracket.
[0012] Preferably, the drive mechanism includes a servo motor and a reducer. Both the servo motor and the reducer are located on the periphery of the mounting box. The output shaft of the servo motor is fixedly connected to the input shaft of the reducer, and the output shaft of the reducer is fixedly connected to the worm gear.
[0013] Preferably, the top of the mounting box is fixedly mounted with a top cover by fasteners, and the top cover has an observation window embedded in it.
[0014] The beneficial effects of this utility model are:
[0015] The assembly plate is connected and fixed to the mounting bracket of the coating roller using fasteners. During adjustment, a servo motor and reducer drive the worm gear to rotate. The rotation is transmitted to the rotating shaft through the cooperation of the worm gear and worm wheel. The rotation of the turntable drives the connecting rod to swing, which in turn drives the connecting bracket to make precise linear displacement along the guide mechanism. This causes the coating roller mounted on one side of the assembly plate to rise and fall stably, adjusting the gap between the coating roller and the back roller. The overall structure does not use a threaded pair structure to directly participate in the adjustment. Instead, it uses a connecting rod drive for adjustment, which has lower requirements for the working environment. Moreover, the precision transmission structure of the worm gear and worm wheel is installed inside the space enclosed by the partition, reducing the adverse effects of oil and volatile adhesives in the working environment on the transmission structure and effectively improving environmental adaptability. Furthermore, the combination of the reducer and the worm gear transmission forms a multi-stage reduction mechanism, which not only ensures the accuracy of motion transmission, but also utilizes the self-locking characteristics of the worm gear transmission pair and the braking performance of the reducer itself to form a double anti-loosening structure, effectively resisting the interference of machine vibration on the adjustment position and ensuring the long-term stability and reliability of the gap adjustment. Attached Figure Description
[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the kraft paper coating roller gap adjustment mechanism of this utility model.
[0017] Figure 2 The diagram shown is a schematic plan view of the internal layout of the mounting box for the kraft paper coating roller gap adjustment mechanism of this utility model.
[0018] Figure 3 The diagram shown is a three-dimensional cross-sectional view of the mounting box for the kraft paper coating roller gap adjustment mechanism of this utility model.
[0019] Figure 4 The diagram shown is a three-dimensional cross-sectional view of the mounting box for the kraft paper coating roller gap adjustment mechanism of this utility model.
[0020] Explanation of reference numerals in the attached drawings: 1. Mounting box; 101. Partition plate; 2. Rotating shaft; 201. Worm gear; 202. Worm; 3. Turntable; 301. Connecting rod; 4. Connecting bracket; 5. Assembly plate; 501. Reinforcing rib; 6. Top cover; 601. Observation window; 701. Servo motor; 702. Reducer; 801. Guide sleeve; 802. Guide rod. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] Please see Figure 1 and Figure 2This utility model provides an embodiment of a kraft paper coating roller gap adjustment mechanism, including a mounting box 1 and a partition 101 fixedly installed inside the mounting box 1. A rotating shaft 2 is rotatably connected between the inner wall of the mounting box 1 and the partition 101. One end of the rotating shaft 2 passes through the partition 101 and extends to the other side of the partition 101. A worm gear 201 is fixedly installed around the rotating shaft 2. A worm 202 is rotatably connected inside the mounting box 1, and the worm 202 meshes with the worm gear 201. A connecting bracket 4 is slidably connected inside the mounting box 1. A transmission mechanism is provided between the rotating shaft 2 and the connecting bracket 4. One end of the connecting bracket 4 extends to the periphery of the mounting box 1 and is fixedly connected to an assembly plate 5 for mounting the coating roller frame. A guide mechanism is provided between the connecting bracket 4 and the mounting box 1. A drive mechanism is provided; the mounting plate 5 is connected and fixed to the mounting bracket of the coating roller using fasteners. During adjustment, the drive mechanism drives the worm 202 to rotate. Through the cooperation of the worm 202 and the worm wheel 201, the rotation is transmitted to the rotating shaft 2, which drives the turntable 3 to rotate. The rotation of the turntable 3 drives the connecting rod 301 to swing, which in turn drives the connecting bracket 4 to make precise linear displacement along the guide mechanism. This causes the coating roller mounted on one side of the mounting plate 5 to rise and fall stably, adjusting the gap between the coating roller and the back roller. The guide mechanism can guide the movement of the connecting bracket 4 to ensure its stable rise and fall. The partition plate 101 can be used to arrange the worm wheel 201 and the worm 202 in an independent space to prevent the adverse effects of harsh working environment.
[0023] Please see Figure 2 , Figure 3 and Figure 4 In this embodiment, the transmission mechanism includes a turntable 3 and a connecting rod 301. The turntable 3 is fixedly installed at one end of the rotating shaft 2 and is coaxial with the rotating shaft 2. One end of the connecting rod 301 is hinged to one side of the turntable 3, and the other end of the connecting rod 301 is hinged to the connecting bracket 4. The hinge axis of the connecting rod 301 and the turntable 3 is eccentrically set relative to the axis of the rotating shaft 2. The turntable 3 and the connecting bracket 4 are connected by the connecting rod 301. When the turntable 3 rotates, it drives the connecting rod 301 to reciprocate, thereby driving the connecting bracket 4 to make a precise linear displacement along the guide mechanism. A reinforcing rib 501 is fixedly installed between the assembly plate 5 and the connecting bracket 4, which effectively improves the structural strength between the connecting bracket 4 and the assembly plate 5. The guide mechanism includes a guide sleeve 801 fixedly installed inside the mounting box 1. A guide rod 802 is slidably connected inside the guide sleeve 801. The upper end of the guide rod 802 is fixedly connected to the connecting bracket 4. The guide sleeve 801 and the guide rod 802 form a linear guide fit to ensure the movement accuracy and stability of the connecting bracket 4.
[0024] Please see Figure 1 and Figure 2In this embodiment, the drive mechanism includes a servo motor 701 and a reducer 702. Both the servo motor 701 and the reducer 702 are located on the periphery of the mounting box 1. The output shaft of the servo motor 701 is connected and fixed to the input shaft of the reducer 702, and the output shaft of the reducer 702 is connected and fixed to the worm gear 202. Through the cooperation of the servo motor 701 and the reducer 702, a stable power output is achieved to the worm gear 202. A top cover 6 is fixedly installed on the upper end of the mounting box 1 by fasteners. An observation window 601 is embedded in the top cover 6. The detachable top cover 6 facilitates maintenance of the interior of the mounting box 1, and the observation window 601 allows relevant operators to observe the operating status of the internal structure of the mounting box 1 in real time.
[0025] During operation, the assembly plate 5 is connected and fixed to the mounting bracket of the coating roller using fasteners;
[0026] When adjustment is required, the servo motor 701 and reducer 702 drive the worm gear 202 to rotate. Through the cooperation of the worm gear 202 and the worm wheel 201, the rotation is transmitted to the rotating shaft 2, which drives the turntable 3 to rotate. The rotation of the turntable 3 drives the connecting rod 301 to swing, which in turn drives the connecting bracket 4 to make precise linear displacement along the guide mechanism, thereby driving the glue roller installed on one side of the assembly plate 5 to rise and fall stably, and adjusting the gap between the glue roller and the back roller.
[0027] By using the reducer 702 in conjunction with the worm gear 201 and worm 202, the rotation output by the servo motor 701 is reduced twice. This ensures the accuracy of motion transmission and utilizes the self-locking characteristics of the worm gear 201 and worm 202 transmission pair and the braking performance of the reducer 702 itself to form a double anti-loosening structure. This effectively resists the interference of machine operation vibration on the adjustment position and ensures the long-term stability and reliability of the gap adjustment.
[0028] The transmission structure formed by turntable 3 and connecting rod 301 is more adaptable to complex working conditions such as damp heat and splashing of rubber materials, significantly reduces the failure rate, and is convenient to maintain and operate, effectively improving the overall efficiency and operational reliability of the equipment.
[0029] Through the above steps, the drive mechanism drives the worm gear 202 to rotate. Through the cooperation of the worm gear 202 and the worm wheel 201, the rotation is transmitted to the rotating shaft 2, which drives the turntable 3 to rotate. The rotation of the turntable 3 drives the connecting rod 301 to swing, which in turn drives the connecting bracket 4 to make precise linear displacement along the guide mechanism. This drives the glue-applying roller installed on one side of the assembly plate 5 to rise and fall stably, adjusting its gap. The self-locking property of the worm wheel 201 and worm gear 202 transmission effectively prevents the vibration generated during machine operation from affecting the adjustment position. This solves the problem that traditional roller gap adjustment mechanisms are mostly based on simple screw transmission principles, but the threaded pair has high requirements for the working environment. The glue-applying working environment is humid and hot, and the glue is easy to volatilize, splash and solidify, which can easily have an adverse effect on the structure of the adjusted threaded pair. Moreover, in the vibration environment of the working machine, the adjusted position is very easy to loosen and shift, affecting the quality of the finished product.
[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. A kraft paper coating roller gap adjustment mechanism, comprising a mounting box (1), characterized in that: It also includes a partition (101) fixedly installed inside the mounting box (1). A rotating shaft (2) is rotatably connected between the inner wall of the mounting box (1) and the partition (101). One end of the rotating shaft (2) passes through the partition (101) and extends to the other side of the partition (101). A worm wheel (201) is fixedly installed on the periphery of the rotating shaft (2). A worm (202) is rotatably connected inside the mounting box (1). The worm (202) meshes with the worm wheel (201). A connecting bracket (4) is slidably connected inside the mounting box (1). A transmission mechanism is provided between the rotating shaft (2) and the connecting bracket (4). One end of the connecting bracket (4) extends to the periphery of the mounting box (1) and is fixedly connected to an assembly plate (5) for installing the glue roller frame. A guide mechanism is provided between the connecting bracket (4) and the mounting box (1). A drive mechanism is provided on the periphery of the mounting box (1).
2. The kraft paper coating roller gap adjustment mechanism according to claim 1, characterized in that: The transmission mechanism includes a turntable (3) and a connecting rod (301). The turntable (3) is fixedly installed at one end of the rotating shaft (2) and is coaxial with the rotating shaft (2). One end of the connecting rod (301) is hinged to one side of the turntable (3), and the other end of the connecting rod (301) is hinged to the connecting bracket (4).
3. The kraft paper coating roller gap adjustment mechanism according to claim 1, characterized in that: The hinge axis of the connecting rod (301) and the turntable (3) is eccentrically set relative to the axis of the rotating shaft (2).
4. The kraft paper coating roller gap adjustment mechanism according to claim 1, characterized in that: A reinforcing rib (501) is fixedly installed between the assembly plate (5) and the connecting bracket (4).
5. The kraft paper coating roller gap adjustment mechanism according to claim 1, characterized in that: The guiding mechanism includes a guide sleeve (801) fixedly installed inside the mounting box (1), and a guide rod (802) is slidably connected inside the guide sleeve (801). The upper end of the guide rod (802) is fixedly connected to the connecting bracket (4).
6. The kraft paper coating roller gap adjustment mechanism according to claim 1, characterized in that: The drive mechanism includes a servo motor (701) and a reducer (702). Both the servo motor (701) and the reducer (702) are located on the periphery of the mounting box (1). The output shaft of the servo motor (701) is connected and fixed to the input shaft of the reducer (702). The output shaft of the reducer (702) is connected and fixed to the worm (202).
7. The kraft paper coating roller gap adjustment mechanism according to claim 1, characterized in that: The top of the mounting box (1) is fixedly mounted with a top cover (6) by fasteners, and the top cover (6) has an observation window (601) embedded in it.