A belt alignment device for a packaging machine conveyor belt

Abstract

This utility model discloses a belt correction device for a packaging machine conveyor belt, relating to the field of packaging machine technology. It includes a frame with a conveyor belt mounted on it. A tension shaft is wound around one end of the conveyor belt. Adjustable plates are erected on both sides of the bottom of the frame, each with an adjustment groove extending through its length. Both ends of the tension shaft extend into the adjustment grooves, with a movable block at one end. A connecting plate protrudes from the side of the movable block facing away from the tension shaft, extending through the adjustment groove. A movable component that can move up and down within the adjustment groove is at the other end. A cylinder is erected below the connecting plate, with its output end fixedly connected to the connecting plate. A detection unit is located on both sides of the top of the frame to detect the edge position of the conveyor belt. A control system receives signals from the detection unit and controls the extension and retraction of the cylinder. This utility model can automatically correct belt deviation when it shifts, reducing manual intervention and significantly improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of packaging machine technology, and in particular to a belt correction device for a packaging machine conveyor belt. Background Technology

[0002] Food packaging machines play a crucial role in modern food production, especially in automated food packaging processes, where conveyor belts, as core components, act as a link between upstream and downstream processes. Existing food packaging machine conveyor belts generally consist of a conveyor belt, drive unit, tensioning device, and guiding device. These components work together to ensure smooth operation of the conveyor belt and the successful transfer of food to the next process.

[0003] However, existing sunken conveyor belts are prone to deviation during use due to structural issues with the tensioning and guiding devices. Once deviation occurs, manual adjustment of the tensioning or guiding devices is usually required to correct it. Specifically, operators need to adjust the angle of the tensioning shaft or guide wheel according to the direction of belt deviation to ensure the conveyor belt returns to the correct running trajectory. If deviation is not corrected in time, friction between the conveyor belt edge and the frame will cause wear, leading to problems such as powdering, fraying, or peeling. This not only reduces the service life of the conveyor belt and affects production efficiency, but the foreign matter generated by wear may also mix into packaged food, thus affecting the quality of the final product.

[0004] In view of this, the inventor conducted in-depth research on the above-mentioned problems, which led to the creation of this case. Utility Model Content

[0005] This utility model provides a belt correction device for a packaging machine conveyor belt, which aims to solve the problems of conveyor belts in existing packaging machines being prone to deviation, wear, and foreign matter generation.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A belt alignment device for a packaging machine conveyor belt, comprising:

[0008] The frame is equipped with a conveyor belt for conveying materials. A tensioning shaft is wound around one end of the conveyor belt. Adjusting plates are erected on both sides of the bottom of the frame. Each of the two adjusting plates has an adjusting groove that runs through the length of the adjusting plate. The two ends of the tensioning shaft extend into the two adjusting grooves respectively. One end is equipped with a moving block. The side of the moving block facing away from the tensioning shaft has a connecting plate that protrudes through the adjusting groove. The other end is equipped with a movable part that can move up and down in the adjusting groove. A cylinder is erected below the connecting plate. The output end of the cylinder is fixedly connected to the connecting plate.

[0009] The detection unit, located on both sides of the top of the frame, is used to detect the edge position of the conveyor belt;

[0010] The control system receives signals from the detection unit and controls the extension and retraction of the cylinder.

[0011] When the detection unit detects that the conveyor belt is deviating to the first side, the control system drives the cylinder to lower the connecting plate, so that the tensioning shaft is tilted with the first side lower and the second side higher; when the detection unit detects that the conveyor belt is deviating to the second side, the control system drives the cylinder to raise the connecting plate, so that the tensioning shaft is tilted with the second side lower and the first side higher.

[0012] Furthermore, the aforementioned movable component is a movable pin, and the end of the movable pin is provided with a limiting protrusion, the size of which is larger than the width of the aforementioned adjusting groove.

[0013] Furthermore, the detection unit includes photoelectric switches symmetrically arranged on both sides of the conveyor belt. When the conveyor belt deviates to the point of blocking the beam of either photoelectric switch, a correction action is triggered.

[0014] Furthermore, the aforementioned control system is a PLC controller.

[0015] As can be seen from the above description of the structure of this utility model, this utility model has the following advantages:

[0016] This invention achieves automatic conveyor belt correction by incorporating an adjustable tension shaft on the frame, along with a detection unit, control system, and cylinders. During application, when the detection unit detects a conveyor belt deviation, it triggers a signal and transmits it to the control system. Upon receiving the signal, the control system drives the cylinders up and down, adjusting the tilt angle of the tension shaft and automatically correcting the conveyor belt's trajectory to return it to the correct position. This automatic correction reduces manual intervention and significantly improves production efficiency. Simultaneously, it avoids friction between the conveyor belt and the frame, extending the conveyor belt's lifespan and thus enhancing overall production stability and reliability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is an enlarged structural diagram of the first side of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the cylinder and connecting plate of this utility model.

[0020] Figure 4 This is a structural schematic diagram of the first side of this utility model.

[0021] Figure 5 This is a schematic diagram of the second side of the present invention.

[0022] Figure 6 This is the circuit diagram for the automatic cylinder correction of this utility model.

[0023] Reference numerals: 10-Frame; 20-Conveyor belt; 30-Tensioning shaft; 31-Moving block; 32-Connecting plate; 33-Moving part; 331-Moving pin; 332-Limiting protrusion; 40-Adjusting plate; 41-Adjusting groove; 50-Cylinder; 61-Mounting plate; 62-Photoelectric switch. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0025] Reference Figures 1 to 5 A belt alignment device for a packaging machine includes a frame 10, a detection unit, and a control system. The frame 10 is equipped with a conveyor belt 20 for conveying materials. One end of the conveyor belt 20 is wound around a tension shaft 30. Adjustment plates 40 are erected on both sides of the bottom of the frame 10. Each adjustment plate 40 has an adjustment groove 41 extending through it along its length. Both ends of the tension shaft 30 extend into the two adjustment grooves 41. One end of the tension shaft 30 is equipped with a moving block 31. The side of the moving block 31 facing away from the tension shaft 30 has a connecting plate 32 protruding through the adjustment groove 41. The other end has a movable part 33 that can move up and down within the adjustment groove 41. A cylinder 50 is erected below the connecting plate 32. The output end of the cylinder 50 extends upward and is fixedly connected to the connecting plate 32. The detection unit is located on both sides of the top of the frame 10 and is used to detect the edge position of the conveyor belt 20. The control system is used to receive signals from the detection unit and control the extension and retraction of the cylinder 50.

[0026] When the detection unit detects that the conveyor belt 20 is shifted to the first side, the control system drives the cylinder 50 to lower the connecting plate, so that the tensioning shaft 30 is tilted with the first side lower and the second side higher; when the detection unit detects that the conveyor belt 20 is shifted to the second side, the control system drives the cylinder 50 to raise the connecting plate 32, so that the tensioning shaft 30 is tilted with the second side lower and the first side higher.

[0027] In this embodiment, the first side is defined as the side with the movable block 31, and the second side is the side with the movable part 33. With this arrangement, when the conveyor belt 20 deviates to one side, the tilt angle of the tension shaft 30 can be adjusted by the cylinder 50, effectively guiding the conveyor belt 20 back to the correct position. This not only reduces manual intervention and improves production efficiency, but also avoids wear between the conveyor belt 20 and the frame 10.

[0028] Reference Figures 1 to 5 The movable part 33 is a movable pin 331. The end of the movable pin 331 is provided with a limiting protrusion 332. The diameter of the movable pin 331 is smaller than the width of the adjusting groove 41, and the size of the limiting protrusion 332 is larger than the width of the adjusting groove 41. This can effectively prevent the movable pin 331 from disengaging from the adjusting groove 41 during use, and ensure that the movable pin 331 remains stable during the adjustment of the tensioning shaft 30.

[0029] Reference Figures 1 to 5 The detection unit includes mounting plates 61 symmetrically arranged on both sides of the conveyor belt 20. Each mounting plate 61 is equipped with a photoelectric switch 62. The photoelectric switch 62 can detect the position of the conveyor belt 20 in real time. When the conveyor belt 20 deviates to block the beam of any photoelectric switch 62, the photoelectric switch 62 will immediately detect the signal and transmit it to the control system. After receiving the signal, the control system will control the cylinder 50 to perform lifting or retraction actions.

[0030] Reference Figures 1 to 6 The control system is a PLC controller. Its programming logic is as follows: if the conveyor belt 20 triggers the photoelectric switch 62 on the first side, the cylinder 50 is controlled to retract; if the conveyor belt 20 triggers the photoelectric switch 62 on the second side, the cylinder 50 is controlled to lift; if neither photoelectric switch 62 on the two sides is triggered, the current position of the cylinder 50 is maintained. Since this is a conventional technical means well known to those skilled in the art, it will not be described in detail here, and it is not shown in the figure. Figure 6 The circuit diagram shown is for the automatic correction of this scheme. PE1 and PE2 are photoelectric switches 62 on both sides, and K1 and K2 are intermediate relays.

[0031] In use, when the photoelectric switch 62 on the first side detects the conveyor belt 20, it transmits the detected signal to the control system. The control system then drives the cylinder 50 to retract, thereby causing the connecting plate 32 to descend. This causes the tensioning shaft 30 to be tilted with the first side lower and the second side higher, meaning the conveyor belt 20 closer to the first side is slightly tensioned and the conveyor belt 20 closer to the second side is slightly relaxed. In this way, the conveyor belt 20 will begin to move towards the second side. When the photoelectric switch 62 on the second side detects the conveyor belt 20, the control system drives the cylinder 50 to rise, thereby causing the connecting plate 32 to rise. This causes the tensioning shaft 30 to be tilted with the second side lower and the first side higher, meaning the conveyor belt 20 closer to the second side is slightly tensioned and the conveyor belt 20 closer to the first side is slightly relaxed. In this way, the conveyor belt 20 will move towards the first side. With this setup, when the conveyor belt 20 deviates, the control system can adjust the tilt angle of the tension shaft 30 through the cylinder 50 to automatically guide the conveyor belt 20 back to the correct position, greatly reducing manual intervention and significantly improving production efficiency. At the same time, it effectively avoids friction between the conveyor belt 20 and the frame 10, extends the service life of the conveyor belt 20, and improves the overall stability of production.

[0032] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A belt alignment device for a packaging machine conveyor belt, characterized in that: include: A frame is provided with a conveyor belt for conveying materials. A tensioning shaft is wound around one end of the conveyor belt. Adjusting plates are erected on both sides of the bottom of the frame. Each of the two adjusting plates has an adjusting groove that runs through the length of the adjusting plate. The two ends of the tensioning shaft extend into the two adjusting grooves respectively. One end is provided with a moving block. The side of the moving block facing away from the tensioning shaft has a connecting plate that protrudes through the adjusting groove. The other end is provided with a movable part that can move up and down in the adjusting groove. A cylinder is erected below the connecting plate. The output end of the cylinder is fixedly connected to the connecting plate. The detection unit, located on both sides of the top of the frame, is used to detect the edge position of the conveyor belt; The control system receives signals from the detection unit and controls the extension and retraction of the cylinder. When the detection unit detects that the conveyor belt is deviating to the first side, the control system drives the cylinder to lower the connecting plate, so that the tensioning shaft is tilted with the first side lower and the second side higher; when the detection unit detects that the conveyor belt is deviating to the second side, the control system drives the cylinder to raise the connecting plate, so that the tensioning shaft is tilted with the second side lower and the first side higher.

2. The belt alignment device for a packaging machine conveyor belt according to claim 1, characterized in that: The movable component is a movable pin, and the end of the movable pin is provided with a limiting protrusion. The size of the limiting protrusion is larger than the width of the adjusting groove.

3. The belt alignment device for a packaging machine conveyor belt according to claim 1, characterized in that: The detection unit includes photoelectric switches symmetrically arranged on both sides of the conveyor belt. When the conveyor belt deviates to the point of blocking the beam of any photoelectric switch, a correction action is triggered.

4. The belt alignment device for a packaging machine conveyor belt according to claim 1, characterized in that: The control system is a PLC controller.

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