Conveying belt blockage detection device

Abstract

The utility model relates to the technical field of material transmission, and discloses a conveyer belt blockage detection device, which comprises a conveyer belt, a guardrail, a trigger piece and a proximity sensor, the conveyer belt is used for conveying bottle bodies, and the bottle bodies can generate elastic deformation. The guardrails are located on the two sides of the conveying belt, the length direction of the guardrails is consistent with the conveying direction of the conveying belt, the guardrails can be far away from the conveying belt under extrusion of bottles, the triggering pieces are fixed to the guardrails, and the proximity sensors are used for detecting displacement of the triggering pieces. According to the utility model, the elastic deformation capability of the plastic bottle body is utilized, and the guardrails capable of generating displacement are additionally arranged on the two sides of the conveying belt, so that the guardrails can generate displacement perpendicular to the length direction of the conveying belt due to the extruded plastic bottle body when the material blocking condition occurs; therefore, the condition that articles are stacked on the conveying belt can be quickly and effectively monitored.

Description

Technical Field

[0001] This utility model relates to the field of material transfer technology, and in particular to a conveyor belt blockage detection device. Background Technology

[0002] During the conveyor belt process, materials often accumulate and clog due to various abnormal reasons, resulting in a blockage phenomenon. This not only leads to a significant decrease in material conveying efficiency but can also cause wear and tear on the conveyor belt and even trigger product quality issues. Therefore, it is necessary to detect and address material blockages on the conveyor belt promptly. Existing blockage detection technologies include the following:

[0003] The photoelectric sensor detection method determines the presence of an object by detecting whether it blocks or reflects light. When an object is continuously detected within a given time period, it can be identified as a blockage. However, photoelectric sensors are susceptible to interference from transparent materials, leading to false or missed detections.

[0004] The pressure sensor detection method determines whether a blockage has occurred by detecting changes in the deformation and tension of the material caused by the blockage. However, this method requires contact detection with the material, and the detection may fail due to deformation or mechanical wear of the material.

[0005] Visual inspection methods use cameras installed at key locations on the conveyor belt to monitor the shape and accumulation of items in real time to determine if there is any blockage. Its advantages include fast detection speed, non-contact operation, and no physical damage to the items. However, its disadvantages are equally apparent: high cost, the need for complex algorithms, and the cameras' susceptibility to steam interference in high-temperature environments, making maintenance difficult.

[0006] In the pharmaceutical field, especially in the production of large-volume infusion bottles, the bottles are typically made of transparent material, and the filling temperature is often too high. Furthermore, although plastic bottles possess a certain degree of elastic deformation, pressure testing methods can easily cause plastic deformation. Therefore, none of the three blockage detection techniques mentioned above are applicable.

[0007] In order to respond to and detect blockages more quickly and promptly in this specific application scenario, it is necessary to develop a new blockage detection device for the conveying process of large-volume infusion plastic bottles. Utility Model Content

[0008] To address the problems existing in the prior art, namely that current blockage detection technologies are not suitable for the conveying process of large-volume infusion plastic bottles, the purpose of this utility model is to provide a conveyor belt blockage detection device. Utilizing the elastic deformation capability of the plastic bottle itself, by adding displacement guardrails on both sides of the conveyor belt, the guardrails can be displaced perpendicular to the length of the conveyor belt due to the compression of the plastic bottle when a blockage occurs. This allows for rapid and effective monitoring of the accumulation of items on the conveyor belt.

[0009] To achieve the above objectives, the technical solution of this utility model is as follows:

[0010] A conveyor belt blockage detection device includes a conveyor belt for conveying bottles, the bottles being capable of elastic deformation. It also includes guardrails, a trigger, and a proximity sensor. The guardrails are located on both sides of the conveyor belt, with their length direction aligned with the conveying direction of the conveyor belt. The guardrails can be moved away from the conveyor belt under pressure from the bottles. The trigger is fixed to the guardrail, and the proximity sensor is used to detect the displacement of the trigger.

[0011] The present invention is further configured to include an elastic connector, wherein the guardrail is installed on both sides of the conveyor belt through the elastic connector, and the guardrail can move away from the conveyor belt under the pressure of the bottle and return to its original position after the pressure of the bottle disappears.

[0012] The present invention is further configured to include a frame and a frame support, wherein the frame support is fixed on the frame, the elastic connector is an elastic bracket, one end of the elastic bracket is fixedly connected to the guardrail and the other end of the elastic bracket is slidably connected to the frame support.

[0013] The present invention is further configured such that the two elastic supports are symmetrically arranged on both sides of the conveyor belt.

[0014] The present invention is further configured such that: multiple elastic supports are provided in the transmission direction of the conveyor belt.

[0015] The present invention is further configured such that the trigger is perpendicular to the length direction of the guardrail.

[0016] The present invention is further configured such that the trigger is located at the middle position along the length of the guardrail.

[0017] The present invention is further configured to include a controller and an alarm, wherein the proximity sensor and the alarm are both electrically connected to the controller, and the controller receives the proximity sensor signal and controls the alarm to issue an alarm prompt.

[0018] In summary, the beneficial effects achieved by this utility model are as follows:

[0019] (1) Guardrails are installed on both sides of the conveyor belt. When material blockage occurs on the conveyor belt, the bottles on the conveyor belt are squeezed against each other, causing the bottles to deform elastically and push the guardrails away from the conveyor belt. The displacement of the guardrails perpendicular to the conveyor belt transmission direction allows the trigger to enter the detection range of the proximity sensor, thereby promptly detecting the material blockage.

[0020] (2) The guardrail is installed on both sides of the conveyor belt by elastic brackets, so that the guardrail can move away from the conveyor belt under the pressure of the bottle and reset in time after the pressure of the bottle on the guardrail disappears, so as to facilitate the rapid resumption of conveying after the blockage is cleared.

[0021] (3) This device is highly targeted, and it is a non-contact testing device for plastic bottle products. It also has the advantages of low cost, easy maintenance and low failure rate. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the specification will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 This is a schematic diagram of the device when the conveyor belt is not blocked.

[0024] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0025] Figure 3 This is a schematic diagram of the device for handling conveyor belt blockage in this invention.

[0026] Figure 4 This is a structural diagram showing the spacing of the guardrails when the conveyor belt is not blocked.

[0027] Figure 5 This is a structural diagram illustrating the spacing of the guardrails when a blockage occurs on the conveyor belt.

[0028] In the diagram: 1. Drive unit; 2. Conveyor belt; 3. Bottle body; 4. Guardrail; 5. Frame support; 6. Elastic bracket; 7. Trigger; 8. Proximity sensor. Detailed Implementation

[0029] 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, not all embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom", etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] As attached Figure 1-3 As shown, a conveyor belt blockage detection device includes a frame, a drive unit 1, a conveyor belt 2, a guardrail 4, a frame support 5, and an elastic support 6.

[0032] The frame provides support and a mounting platform for the entire device. The drive unit 1 provides power to the conveyor belt 2. The drive unit 1 is generally a motor, which transmits power to the rollers of the conveyor belt 2 through a reducer, thereby enabling the conveyor belt 2 to continuously drive.

[0033] The conveyor belt 2 in this invention is used to transport large-volume infusion plastic bottles 3. The bottle 3 has a certain elastic deformation capability and can produce a certain amount of elastic deformation when the bottle 3 is slightly squeezed.

[0034] Several bottles 3 on conveyor belt 2 are transported in a single row. In this embodiment, when the bottles 3 are not compressed, their dimension in the conveying direction perpendicular to conveyor belt 2 is smaller than their dimension in the same conveying direction. When a blockage occurs, the bottles 3 are compressed against each other, at which point their dimension in the conveying direction perpendicular to conveyor belt 2 increases. In some other embodiments, the dimensions of the bottles 3 in the two directions can be equal, i.e., the bottles 3 are cylindrical. When a blockage occurs, the cylindrical bottles 3 are compressed, at which point their dimension in the conveying direction perpendicular to conveyor belt 2 will be larger than their dimension in the same conveying direction.

[0035] The guardrail 4 is a long, strip-shaped or plate-shaped structure, with its length direction aligned with the conveying direction of the conveyor belt 2. The guardrail 4 is located on both sides of the conveyor belt 2, and both guardrails 4 are close to the conveyor belt 2, thereby preventing the bottles 3 on the conveyor belt 2 from deviating from the conveyor belt 2 during the conveying process.

[0036] An elastic support 6 is provided at a relative position on each side of the conveyor belt 2, and the two elastic supports 6 are arranged symmetrically about the center line of the conveyor belt 2 in the conveying direction.

[0037] In this embodiment, the elastic bracket 6 is a cylindrical structure, perpendicular to the guardrail 4. One end of the elastic bracket 6 near the guardrail 4 is fixed to the guardrail 4, and the other end is slidably connected to the frame support 5.

[0038] The frame support 5 is fixed to the frame and provides limiting and support functions for the elastic support 6. In this embodiment, a frame support 5 is installed at a relative position on each side of the conveyor belt 2, and each frame support 5 provides limiting and support functions for one elastic support 6; or, the two ends of the same frame support 5 provide limiting and support functions for two opposite elastic supports 6 respectively.

[0039] A spring (not shown in the figure) is sleeved on the outside of the elastic support 6. The spring is compressed between the frame support 5 and the guardrail 4, so that the guardrail 4 can be displaced in a direction perpendicular to its own length. When the guardrail 4 moves away from the conveyor belt 2, the spring sleeved on the elastic support 6 is compressed synchronously.

[0040] To maintain the stability of the guardrail 4 and ensure that the guardrail 4 is subjected to uniform force, multiple elastic supports 6 are provided at equal intervals along the transmission direction of the conveyor belt 2.

[0041] The trigger 7 is a long, rod-shaped structure, positioned perpendicular to the length of the guardrail 4. One end of the trigger 7 is fixed to the guardrail 4, while the other end is suspended in the air. Furthermore, the trigger 7 is located at the midpoint of the length of the guardrail 4.

[0042] A proximity sensor 8 is installed at the suspended end of the trigger 7. The proximity sensor 8 is a prior art device capable of sensing the approach of an object. It utilizes the sensitivity of a displacement sensor to approaching objects to identify their proximity and outputs a corresponding switching signal. The proximity sensor 8 is fixed to the frame and perpendicular to the trigger 7 on the guardrail 4. When the guardrail 4 moves away from the conveyor belt 2, the trigger 7 moves synchronously and enters the detection range of the proximity sensor 8.

[0043] This detection device also includes a controller and an alarm. The proximity sensor 8 and the alarm are both electrically connected to the controller. The controller is used to receive the signal emitted by the proximity sensor 8 and control the alarm to issue an alarm prompt.

[0044] As attached Figure 4-5As shown, during normal conveying, the bottle body 3 is in a normal shape, and the bottle bodies 3 on the conveyor belt 2 do not contact each other. At this time, the two guardrails 4 are close to the conveyor belt 2, and the distance between the two guardrails 4 is H1. When a material blockage occurs during conveying, the bottle bodies 3 accumulate, causing the bottle bodies 3 on the conveyor belt 2 to contact and squeeze each other. The bottle bodies 3 are compressed and elastically deformed, thereby generating a squeezing force perpendicular to the conveying direction. This lateral pressure pushes the guardrails 4 away from the conveyor belt 2. The guardrails 4 overcome the elastic force of the spring on the elastic support 6 under the pressure of the bottle bodies 3, thereby generating a displacement, and then带动 the trigger member 7 to move synchronously. At this time, the two guardrails 4 are far away from the conveyor belt 2, and the distance between the two guardrails 4 is H2. Numerically, H1 < H2. When the trigger member 7 enters the detection range of the proximity sensor 8, the proximity sensor 8 transmits the detected displacement signal to the controller. The controller controls the alarm to emit an alarm signal to remind the operator to deal with the material blockage situation in time. After the material blockage is cleared, the lateral pressure generated by the bottle bodies 3 disappears, and the guardrails 4 can automatically reset under the elastic force of the spring on the elastic support 6.

[0045] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present invention. Obviously, those skilled in the art can make various changes and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A conveyor belt blockage detection device, comprising a conveyor belt (2), the conveyor belt (2) being used to convey a bottle (3), and the bottle (3) being capable of elastic deformation, characterized in that, It also includes a guardrail (4), a trigger (7) and a proximity sensor (8). The guardrail (4) is located on both sides of the conveyor belt (2) and the length direction of the guardrail (4) is consistent with the transmission direction of the conveyor belt (2). The guardrail (4) can move away from the conveyor belt (2) under the pressure of the bottle (3). The trigger (7) is fixed on the guardrail (4). The proximity sensor (8) is used to detect the displacement of the trigger (7).

2. The conveyor belt blockage detection device according to claim 1, characterized in that, It also includes elastic connectors. The guardrail (4) is installed on both sides of the conveyor belt (2) through the elastic connectors. The guardrail (4) can move away from the conveyor belt (2) under the pressure of the bottle body (3) and reset after the pressure of the bottle body (3) disappears.

3. The conveyor belt blockage detection device according to claim 2, characterized in that, It also includes a frame and a frame support (5), the frame support (5) being fixed on the frame, the elastic connector being an elastic bracket (6), one end of the elastic bracket (6) being fixedly connected to the guardrail (4) and the other end of the elastic bracket (6) being slidably connected to the frame support (5).

4. The conveyor belt blockage detection device according to claim 3, characterized in that, The two elastic supports (6) are symmetrically arranged on both sides of the conveyor belt (2).

5. The conveyor belt blockage detection device according to claim 4, characterized in that, Multiple elastic supports (6) are provided in the transmission direction of the conveyor belt (2).

6. The conveyor belt blockage detection device according to claim 1, characterized in that, The trigger (7) is perpendicular to the length direction of the guardrail (4).

7. The conveyor belt blockage detection device according to claim 6, characterized in that, The trigger (7) is located at the middle position along the length of the guardrail (4).

8. The conveyor belt blockage detection device according to claim 1, characterized in that, It also includes a controller and an alarm. The proximity sensor (8) and the alarm are both electrically connected to the controller. The controller receives the signal from the proximity sensor (8) and controls the alarm to issue an alarm prompt.

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