PLC-based adaptive speed regulating device for page conveying machine

Abstract

The utility model provides a kind of based on the adaptive speed regulation device of page conveyor of PLC, including conveyor, two groups of speed regulation mechanism, cleaning mechanism, photoelectric sensor and PLC controller, and speed regulation mechanism is set in the drive end of conveyor, for adjusting the conveying speed of conveyor, cleaning mechanism is set for the conveying surface of conveyor, for cleaning photoelectric sensor surface impurity, photoelectric sensor is set on cleaning mechanism for the conveying surface of conveyor, for auxiliary detection material, PLC controller is electrically connected with speed regulation mechanism, cleaning mechanism, photoelectric sensor respectively, for receiving the detection signal of photoelectric sensor.The utility model is used in cooperation with speed regulation mechanism and photoelectric sensor by PLC controller, realizes the adaptive speed regulation effect of conveyor based on material detection signal, advantage is unnecessary manual adjustment speed parameter, make conveying speed and material flow real-time matching, avoid material accumulation or conveying disjoint, improve page conveying efficiency and automation level.

Description

Technical Field

[0001] This utility model belongs to the technical field of conveyor equipment, and more specifically, it relates to an adaptive speed regulation device for a paging conveyor based on PLC. Background Technology

[0002] As a key piece of equipment for automated paging and continuous conveying of materials in industrial production, paging conveyors are widely used in many industries such as packaging, printing, and logistics. Their main function is to orderly separate stacked materials one by one and stably convey them to subsequent processing or handling stages according to a set speed and rhythm, which greatly improves the automation level and efficiency of the production process.

[0003] From the perspective of enterprise production cost control, the speed adjustment device of most paging conveyors is not flexible enough. When the production involves multiple specifications of materials, such as in the packaging industry, where it is necessary to convey both thin and soft plastic films and thick and sturdy cardboard boxes, the common fixed transmission ratio belt pulley speed adjustment method is inadequate. Operators have to manually change different specifications of pulleys to adapt to the materials. This process is not only cumbersome and complicated, but also time-consuming, which seriously hinders the improvement of production efficiency.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a PLC-based adaptive speed control device for paging conveyors, in order to achieve a more practical purpose. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a PLC-based adaptive speed control device for a paging conveyor, which is achieved by the following specific technical means: An adaptive speed control device for a paging conveyor based on PLC includes a conveyor, two sets of speed control mechanisms, a cleaning mechanism, photoelectric sensors, and a PLC controller. The speed control mechanisms are located at the drive end of the conveyor and are used to adjust the conveying speed of the conveyor. The cleaning mechanism is located on the conveying surface of the conveyor and is used to clean impurities from the surface of the photoelectric sensors. The photoelectric sensors are located on the conveying surface of the conveyor and are mounted on the cleaning mechanism to assist in material detection. The PLC controller is electrically connected to the speed control mechanism, the cleaning mechanism, and the photoelectric sensors, respectively, to receive the detection signals from the photoelectric sensors, and to control the speed control mechanism to perform speed control actions and the cleaning mechanism to perform cleaning actions.

[0006] Preferably, the speed regulating mechanism includes a mounting plate, an adjusting gear plate, a belt support rod, an adjusting gear, and a belt. The mounting plate is mounted on the frame of the conveyor. The adjusting gear plate is rotatably mounted on one side of the mounting plate via a bearing, and an arc-shaped drive groove is provided on the end face of the adjusting gear plate. One end of the belt support rod slides on the mounting plate, and the other end extends to the inside of the belt to support the belt. A drive pin is integrally formed on the side of the belt support rod near the adjusting gear plate, and the drive pin is slidably embedded in the arc-shaped drive groove. The adjusting gear is rotatably mounted on the mounting plate via a rotating shaft and meshes with the adjusting gear plate. The belt is wound between the belt support rods of the two sets of speed regulating mechanisms.

[0007] Preferably, the adjusting gear plate has at least three sets of arc-shaped drive grooves, which are evenly distributed along the circumference of the adjusting gear plate, and each set of arc-shaped drive grooves is fitted with a drive pin for a belt support rod.

[0008] Preferably, the speed control mechanism also includes a micro servo motor. The fixed end of the micro servo motor is connected to one side of the mounting plate by bolts, and the output end is fixed coaxially with the adjusting gear by a coupling. The micro servo motor is electrically connected to the PLC controller.

[0009] Preferably, the cleaning mechanism includes a semi-circular detection plate, a sliding gear ring, a sliding gear, a cleaning roller, a connecting rod, and a sliding wheel. The detection plate is mounted on the frame of the conveyor and spans the conveying surface of the conveyor, providing a mounting carrier for the various components of the cleaning mechanism. The sliding gear ring is fixed to one side of the detection plate, and the sliding gear meshes with the sliding gear ring. The sliding gear is coaxially fixed to the cleaning roller via a connecting shaft. One end of the connecting rod is hinged to the connecting shaft via a bearing, and the other end is provided with a sliding wheel via a rotating shaft. The sliding wheel makes rolling contact with the surface of the photoelectric sensor.

[0010] Preferably, the outer wall of the cleaning roller is wrapped with elastic cleaning cotton, and the outer edge of the elastic cleaning cotton is closely fitted with the conveying surface of the conveyor to form a friction fit. The cleaning mechanism has at least two sets of sliding wheels, which are symmetrically distributed on both sides of the cleaning roller. The wheel surface of the sliding wheel is integrally formed with anti-slip texture.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model achieves adaptive speed regulation of the conveyor based on material detection signals by using a PLC controller in conjunction with a speed regulation mechanism and photoelectric sensors. The advantage is that it eliminates the need for manual adjustment of speed parameters, ensuring real-time matching between conveying speed and material flow, preventing material accumulation or conveying disconnection, and improving paging conveying efficiency and automation level. Through the coordination of the speed regulation mechanism's adjusting toothed disc, belt support rod, and belt, continuous and precise adjustment of the conveyor speed is achieved. The advantage is that it can adapt to the conveying needs of different materials without replacing transmission components, shortening specification changeover time. At the same time, three sets of evenly distributed arc-shaped drive grooves and drive pins ensure balanced belt force, preventing belt deviation or localized wear, and extending the service life of transmission components.

[0012] 2. This utility model achieves automatic cleaning of impurities on the surface of the photoelectric sensor by using the sliding wheel and sweeping roller of the cleaning mechanism in conjunction with the photoelectric sensor. The advantage is that it eliminates the need for frequent manual wiping of the sensor, avoids detection failure caused by impurities blocking the sensor, ensures stable detection signals, and provides accurate adjustment basis for the speed regulation mechanism. By using the sweeping roller of the cleaning mechanism in conjunction with the conveyor surface, it achieves synchronous cleaning of impurities on the conveyor surface. The advantage is that it reduces the impact of impurities on the stability of material conveying, avoids impurities jamming equipment parts, reduces equipment failure rate, and the elastic cleaning cotton can adapt to the slight undulations of the conveyor surface to ensure thorough cleaning. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0014] Figure 2 This is a side sectional view of the present invention.

[0015] Figure 3 yes Figure 1 Enlarged schematic diagram of structure A in the middle.

[0016] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Conveyor; 2. Speed ​​regulating mechanism; 201. Mounting plate; 202. Adjusting gear plate; 203. Arc-shaped drive groove; 204. Drive pin; 205. Belt support rod; 206. Adjusting gear; 207. Belt; 3. Cleaning mechanism; 301. Detection plate; 302. Connecting shaft; 303. Sliding gear ring; 304. Sliding gear; 305. Cleaning roller; 306. Connecting rod; 307. Sliding wheel; 4. Photoelectric sensor. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Example: As attached Figure 1 To be continued Figure 3 As shown: This utility model provides a PLC-based adaptive speed control device for a paging conveyor, including a conveyor 1, two sets of speed control mechanisms 2, a cleaning mechanism 3, a photoelectric sensor 4, and a PLC controller. The speed control mechanism 2 is located at the drive end of the conveyor 1 and is used to adjust the conveying speed of the conveyor 1. The cleaning mechanism 3 is located on the conveying surface of the conveyor 1 and is used to clean impurities on the surface of the photoelectric sensor 4. The photoelectric sensor 4 is located on the conveying surface of the conveyor 1 and is located on the cleaning mechanism 3 to assist in material detection. The PLC controller is electrically connected to the speed control mechanism 2, the cleaning mechanism 3, and the photoelectric sensor 4 respectively, and is used to receive the detection signal from the photoelectric sensor 4 and control the speed control mechanism 2 to perform speed control actions and control the cleaning mechanism 3 to perform cleaning actions.

[0019] The speed regulating mechanism 2 includes a mounting plate 201, an adjusting gear plate 202, a belt support rod 205, an adjusting gear 206, and a belt 207. The mounting plate 201 is mounted on the frame of the conveyor 1. The adjusting gear plate 202 is rotatably mounted on one side of the mounting plate 201 via bearings, and an arc-shaped drive groove 203 is provided on the end face of the adjusting gear plate 202. One end of the belt support rod 205 slides on the mounting plate 201, and the other end extends to the inside of the belt 207 to support the belt 207. A drive pin 204 is integrally formed on the side of the belt support rod 205 near the adjusting gear plate 202. The drive pin 204 is slidably embedded in the arc-shaped drive groove 203. The adjusting gear 206 is rotatably mounted on the mounting plate 201 via a rotating shaft and meshes with the adjusting gear plate 202. The belt 207 is wound between the belt support rods 205 of the two sets of speed regulating mechanisms 2. The mounting plate 201, adjusting gear plate 202, belt support rod 205, adjusting gear 206, and belt 207 work together to achieve flexible adjustment of the conveying speed of conveyor 1. The mounting plate 201 provides a stable mounting base for each component, ensuring accurate transmission of speed adjustment actions. The arc-shaped drive groove 203 of the adjusting gear plate 202 slides with the drive pin 204 of the belt support rod 205, which can convert the rotation of the adjusting gear plate 202 into the sliding of the belt support rod 205, thereby changing the support state and transmission ratio of the belt 207. Different conveying needs can be adapted without replacing the transmission components. The advantage is that it reduces the frequency of component replacement and reduces the complexity of operation. At the same time, the two sets of speed adjustment mechanisms 2 are linked through the belt 207, which improves the stability and synchronization of speed adjustment and avoids conveying deviation caused by single-set speed adjustment.

[0020] The adjusting gear plate 202 has at least three sets of arc-shaped drive grooves 203, which are evenly distributed along the circumference of the adjusting gear plate 202. Each set of arc-shaped drive grooves 203 is fitted with a corresponding drive pin 204 for a belt support rod 205. By using the at least three sets of evenly distributed arc-shaped drive grooves 203 on the adjusting gear plate 202 in conjunction with the drive pins 204 of the corresponding belt support rods 205, the belt 207 is evenly supported. This avoids the belt 207 from running off-center, wrinkling, or excessively wearing due to excessive local stress, thus extending the service life of the belt 207. At the same time, the evenly distributed drive points ensure that the belt support rods 205 slide synchronously, making the belt tension adjustment more uniform, improving the accuracy of the speed adjustment of the conveyor 1, and avoiding speed fluctuations caused by uneven belt stress.

[0021] The speed control mechanism 2 also includes a micro servo motor. The fixed end of the micro servo motor is connected to one side of the mounting plate 201 by bolts, and the output end is coaxially fixed to the adjusting gear 206 by a coupling. The micro servo motor is electrically connected to the PLC controller. Through the cooperation of the micro servo motor, adjusting gear 206, and mounting plate 201, the rotation of the adjusting gear 202 is precisely controllable. The connection between the fixed end of the micro servo motor and the mounting plate 201 ensures stable operation. The coaxial fixation of the output end to the adjusting gear 206 by the coupling can accurately transmit the motor power to the adjusting gear 206, thereby driving the adjusting gear 202 to rotate precisely. At the same time, the micro servo motor is electrically connected to the PLC controller and can receive control signals from the PLC to achieve automated speed control. The advantage is that compared with manual adjustment, it improves the speed control response speed and accuracy, reduces human operation error, and meets the needs of rapid speed switching in different material conveying scenarios.

[0022] The cleaning mechanism 3 includes a semi-circular detection plate 301, a sliding gear ring 303, a sliding gear 304, a cleaning roller 305, a connecting rod 306, and a sliding wheel 307. The detection plate 301 is mounted on the frame of the conveyor 1 and spans the conveying surface of the conveyor 1, providing a mounting carrier for the components of the cleaning mechanism 3. The sliding gear ring 303 is fixed to one side of the detection plate 301. The sliding gear 304 meshes with the sliding gear ring 303 and is coaxially fixed to the cleaning roller 305 via a connecting shaft 302. One end of the connecting rod 306 is hinged to the connecting shaft 302 via a bearing, and the other end is equipped with a sliding wheel 307 via a rotating shaft. The sliding wheel 307 rolls in contact with the surface of the photoelectric sensor 4. The cleaning mechanism 3 consists of a semi-circular detection plate 301, a sliding gear ring 303, a sliding gear 304, a cleaning roller 305, a connecting rod 306, and a sliding wheel 307. When used together, this system achieves automatic cleaning of impurities on the surface of the photoelectric sensor 4. The detection plate 301 provides a stable mounting carrier for each component without obstructing the material detection field of view. The sliding wheel 307 rolls in contact with the surface of the photoelectric sensor 4 and can move along the sliding gear ring 303 with the operation of the conveyor 1, driving the connecting rod 306, connecting shaft 302, and sliding gear 304 to move synchronously, thereby enabling the cleaning roller 305 to move synchronously to achieve cleaning. The advantage is that it eliminates the need for frequent manual wiping of the photoelectric sensor 4, avoids detection failure caused by impurities obstructing the sensor, ensures stable detection signals, and provides a speed control mechanism for the PLC controller.

[0023] The outer wall of the cleaning roller 305 is wrapped with elastic cleaning cotton. The outer edge of the elastic cleaning cotton is closely attached to the conveying surface of the conveyor 1, forming a frictional fit. The cleaning mechanism 3 has at least two sets of sliding wheels 307, which are symmetrically distributed on both sides of the cleaning roller 305. The wheel surface of the sliding wheels 307 is integrally formed with anti-slip texture. Through the cooperation between the elastic cleaning cotton on the outer wall of the cleaning roller 305 and the conveying surface of the conveyor 1, and the cooperation between the two sets of symmetrically distributed sliding wheels 307 with anti-slip texture and the photoelectric sensor 4, on the one hand, the synchronous cleaning effect of impurities on the conveying surface of the conveyor 1 is achieved. The elastic cleaning cotton is closely attached to the conveying surface, which can effectively wipe away residual impurities and avoid impurities affecting the stability of material conveying. On the other hand, the sliding wheels 307 are stably rolled on the surface of the photoelectric sensor 4. The anti-slip texture enhances the friction and avoids the sliding wheels 307 slipping, which would lead to incomplete cleaning. The benefit is that it simultaneously ensures the cleanliness of the conveying surface and the detection accuracy of the photoelectric sensor 4, and reduces the risk of equipment failure caused by impurities jamming or detection deviation.

[0024] The working principle of this embodiment is as follows: During operation, the photoelectric sensor 4 installed on the semi-circular detection plate 301 of the cleaning mechanism 3 detects the material status on the conveyor surface of the conveyor 1 in real time and transmits the detection signal to the PLC controller; the PLC The controller determines the material flow rate or spacing based on the signal, and then controls the operation of the micro servo motor of the speed regulating mechanism 2. The micro servo motor drives the adjusting gear 206 to rotate, and the adjusting gear disk 202 meshing with the adjusting gear 206 rotates accordingly. The arc-shaped drive groove 203 on its end face pushes the belt support rod 205 to slide along the mounting plate 201 through the drive pin 204, so that the belt support rod 205 adjusts the support angle and tension of the belt 207. The two sets of speed regulating mechanisms 2 are linked through the belt 207, and finally realize the precise adjustment of the conveying speed of the conveyor 1. At the same time, when the conveyor 1 is running, the sliding wheel 307 of the cleaning mechanism 3 with anti-slip texture rolls and contacts the surface of the photoelectric sensor 4 and rotates with the movement of the conveyor. Through the connecting rod 306, it drives the connecting shaft 302 and the sliding gear 304 to move along the sliding gear ring 303, so that the cleaning roller 305 rolls synchronously. The elastic cleaning cotton on its outer wall cleans the impurities on the surface of the photoelectric sensor 4 on the one hand, and adheres to the conveying surface of the conveyor 1 to clean impurities on the other hand, ensuring the continuous and stable operation of the equipment.

[0025] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A PLC-based adaptive speed control device for a paging conveyor, characterized in that: The system includes a conveyor (1), two sets of speed regulating mechanisms (2), a cleaning mechanism (3), a photoelectric sensor (4), and a PLC controller. The speed regulating mechanism (2) is located at the drive end of the conveyor (1) and is used to regulate the conveying speed of the conveyor (1). The cleaning mechanism (3) is located on the conveying surface of the conveyor (1) and is used to clean impurities on the surface of the photoelectric sensor (4). The photoelectric sensor (4) is located on the conveying surface of the conveyor (1) and is located on the cleaning mechanism (3) to assist in the detection of materials. The PLC controller is electrically connected to the speed regulating mechanism (2), the cleaning mechanism (3), and the photoelectric sensor (4) respectively. It is used to receive the detection signal of the photoelectric sensor (4) and control the speed regulating mechanism (2) to perform speed regulating actions and control the cleaning mechanism (3) to perform cleaning actions.

2. The PLC-based adaptive speed control device for paging conveyors as described in claim 1, characterized in that: The speed regulating mechanism (2) includes a mounting plate (201), an adjusting gear plate (202), a belt support rod (205), an adjusting gear (206), and a belt (207). The mounting plate (201) is mounted on the frame of the conveyor (1). The adjusting gear plate (202) is rotatably mounted on one side of the mounting plate (201) via a bearing, and an arc-shaped drive groove (203) is provided on the end face of the adjusting gear plate (202). One end of the belt support rod (205) slides on the mounting plate (201), and the other end... The belt extends to the inside of the belt (207) to support the belt (207), and the belt support rod (205) has a drive pin (204) integrally formed on the side near the adjusting gear plate (202). The drive pin (204) is slidably embedded in the arc-shaped drive groove (203). The adjusting gear (206) is rotatably mounted on the mounting plate (201) through a rotating shaft and meshes with the adjusting gear plate (202). The belt (207) is wound between the belt support rods (205) of the two sets of speed regulating mechanisms (2).

3. The PLC-based adaptive speed control device for paging conveyors as described in claim 2, characterized in that: The adjusting gear plate (202) has at least three sets of arc-shaped drive grooves (203), which are evenly distributed along the circumference of the adjusting gear plate (202). Each set of arc-shaped drive grooves (203) is fitted with a drive pin (204) of the belt support rod (205).

4. The PLC-based adaptive speed control device for paging conveyors as described in claim 3, characterized in that: The speed control mechanism (2) also includes a micro servo motor. The fixed end of the micro servo motor is connected to one side of the mounting plate (201) by bolts, and the output end is coaxially fixed to the adjusting gear (206) by a coupling. The micro servo motor is electrically connected to the PLC controller.

5. The PLC-based adaptive speed control device for paging conveyors as described in claim 1, characterized in that: The cleaning mechanism (3) includes a semi-circular detection plate (301), a sliding gear ring (303), a sliding gear (304), a cleaning roller (305), a connecting rod (306), and a sliding wheel (307). The detection plate (301) is mounted on the frame of the conveyor (1) and spans the conveying surface of the conveyor (1), providing a mounting carrier for each component of the cleaning mechanism (3). The sliding gear ring (303) is fixed to one side of the detection plate (301). The sliding gear (304) meshes with the sliding gear ring (303), and the sliding gear (304) is coaxially fixed with the cleaning roller (305) through the connecting shaft (302). One end of the connecting rod (306) is hinged to the connecting shaft (302) through a bearing, and the other end is provided with a sliding wheel (307) through a rotating shaft. The sliding wheel (307) makes rolling contact with the surface of the photoelectric sensor (4).

6. The PLC-based adaptive speed control device for paging conveyors as described in claim 5, characterized in that: The outer wall of the cleaning roller (305) is wrapped with elastic cleaning cotton. The outer edge of the elastic cleaning cotton is closely attached to the conveying surface of the conveyor (1) to form a friction fit. The cleaning mechanism (3) has at least two sets of sliding wheels (307) which are symmetrically distributed on both sides of the cleaning roller (305). The wheel surface of the sliding wheel (307) is integrally formed with anti-slip texture.

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