Conveying device with self-checking mechanism

Abstract

The utility model discloses a conveying device with a self-checking mechanism, which belongs to the field of packaging machinery and comprises a conveying portion and a self-checking portion, the self-checking portion comprises a self-checking conveying mechanism and a self-checking mechanism used for detecting materials on the self-checking conveying mechanism, and the self-checking conveying mechanism is arranged on the self-checking conveying mechanism. The self-checking mechanism comprises a first detection unit and a second detection unit which are arranged in the conveying direction of the self-checking conveying mechanism in a spaced mode, the first detection unit is arranged on one side of the conveying part, and the first detection unit and the second detection unit detect materials correspondingly. The distance between the first detection unit and the second detection unit is larger than the single size value of the to-be-detected material but smaller than the double value of the size of the to-be-detected material, the first detection unit and the second detection unit output an alarm signal when detecting the material, and the output signal of the first detection unit is further used for controlling the conveying part to work. The utility model aims to provide a conveying device with a self-checking mechanism, which can improve the counting accuracy.

Description

Technical Field

[0001] The utility model relates to the field of packaging machinery, in particular to a conveying device with a self-inspection mechanism. Background Art

[0002] When packaging materials with a certain range of values, multiple materials are often placed in one packaging bag. To ensure the fixed number of materials in each bag, during the automated packaging process, the materials are transported in a column by a conveyor and passed through a counter. The counter counts the passing materials and packages them once the number of materials meets the requirements.

[0003] However, when materials are moving on the conveyor, it is easy for two adjacent materials to be connected end to end or partially overlap due to loading and other reasons. Such materials may cause the counter to undercount or miss when passing through the counter, and thus the amount of materials loaded into the packaging bag does not meet the requirements. Utility Model Content

[0004] The purpose of the present invention is to solve the above problems and provide a conveying device with a self-checking mechanism, which can improve the accuracy of counting.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is a conveying device with a self-inspection mechanism, including a conveying part and a self-inspection part, the self-inspection part including a self-inspection conveying mechanism and a self-inspection mechanism for detecting materials on the self-inspection conveying mechanism, the self-inspection mechanism including a first detection unit and a second detection unit arranged at intervals along the conveying direction of the self-inspection conveying mechanism, the first detection unit being arranged at the proximal end of the conveying part, the first detection unit and the second detection unit respectively detecting materials, the distance between the first detection unit and the second detection unit being greater than a single size value of the material to be detected, but less than twice the size of the material to be detected, the first detection unit and the second detection unit both output an alarm signal when detecting materials, and the output signal of the first detection unit is also used to control the operation of the conveying part.

[0006] Furthermore, to accommodate materials of different sizes, the distance between the first detection unit and the second detection unit is adjustable.

[0007] Furthermore, in order to reduce the phenomenon of partial overlap of materials, the conveying portion includes at least two sections of conveyors with gradually increasing conveying speeds.

[0008] Furthermore, a height limiting portion is provided on the conveyor at the far end of the self-inspection portion to limit the height at which the materials can pass, so that the materials will not be completely overlapped.

[0009] The beneficial effects of the present invention are as follows: two detection units are arranged at intervals along the direction of material movement. When the material enters the self-inspection part from the conveying part, the end face of the material is detected by the first detection unit, and the first detection unit sends a signal to the control system. After the control system analyzes the signal, it controls the conveying part to stop working to prevent the subsequent material from continuing to move to the self-inspection part. The material moves to the second detection unit under the drive of the self-inspection conveying mechanism. When the material is detected by the second detection unit, but the first detection unit does not detect the material at this time, it means that there is no material stacking. When the front end of the material is detected by the second detection unit and the rear end is detected by the first detection unit, it means that there is an overlapping area of ​​adjacent materials, and an alarm signal is output at this time; thereby, the accuracy of subsequent counting can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a side structural schematic diagram of the utility model.

[0011] The text labels in the figure indicate: 1. Self-inspection conveying mechanism; 2. First detection unit; 3. Second detection unit; 4. Conveyor; 5. Height limiter. DETAILED DESCRIPTION

[0012] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0013] Example 1, as Figure 1 As shown, the structure of this embodiment is as follows: it includes a conveying part and a self-inspection part, the conveying part includes at least two sections of conveyors 4 with gradually increasing conveying speeds. In this embodiment, three conveyors are provided. For the convenience of description, they are named conveyor No. 1, conveyor No. 2, and conveyor No. 3, respectively. Conveyor No. 1 is located at the far end of the self-inspection part and has the slowest speed, conveyor No. 3 is located at the near end of the self-inspection part and has the fastest speed, and conveyor No. 2 is in the middle. The three conveyors are driven by different motors, and the operation of the motors is controlled by a control system. The control system includes a single-chip microcomputer, etc., and a PLC control system can be used. A height limiting part 5 for limiting the height of the material passing through is provided on the conveyor 4 at the far end of the self-inspection part. The height limiting part 5 is mounted on the frame of the conveyor 4, and the distance between the lower end face of the height limiting part 5 and the upper end face of the conveyor belt of the conveyor is greater than the height of a single material, but less than twice the height of the material.

[0014] The self-inspection part includes a self-inspection conveying mechanism 1 and a self-inspection mechanism for detecting materials on the self-inspection conveying mechanism 1. The self-inspection conveying mechanism 1 and the conveyor 4 can adopt linear conveying mechanisms such as belt conveyors. The self-inspection mechanism includes a first detection unit 2 and a second detection unit 3 arranged at intervals along the conveying direction of the self-inspection conveying mechanism 1. The first detection unit 2 and the second detection unit 3 can adopt photoelectric sensors, laser sensors, etc. The distance between the first detection unit 2 and the second detection unit 3 is adjustable. For this purpose, the first detection unit 2 and the second detection unit 3 are installed on different frames, and the frames are installed on the frame of the self-inspection conveying mechanism 1 by bolts. The frame is provided with long strip holes, or other existing horizontal distance adjustment mechanisms. The first detection unit 2 and the second detection unit 3 are located above the self-inspection conveying mechanism 1; the first detection unit 2 is arranged at the proximal end of the conveying part, and the first detection unit 2 and the second detection unit 3 detect the material respectively. The distance between the first detection unit 2 and the second detection unit 3 is greater than the single size value of the material to be detected, but less than twice the size of the material to be detected. When both the first detection unit 2 and the second detection unit 3 detect the material, an alarm signal is output. The output signal of the first detection unit 2 is also used to control the operation of the conveying part.

[0015] Specific working process: Materials are placed one by one on conveyor No. 1, either manually or by a loading mechanism. At this point, some materials inevitably overlap. The width of conveyor 4 ensures that the materials are placed in the same direction. When the front of the material moves to conveyor No. 2, it gains acceleration, making it faster than the material behind it. This creates a speed difference between the two adjacent materials, further separating the two connected materials. Simultaneously, before moving to conveyor No. 2, the materials pass through height limiter 5. At this point, if the two materials completely overlap, the material above will be swept down, further improving counting accuracy.

[0016] When a group of materials enters the self-checking section from the conveying section, it is detected by the first detection unit 2. At this time, part of the group of materials is still on the third conveyor. The first detection unit 2 sends a signal to the control system. After analyzing the signal, the control system controls the conveying section to stop working to prevent subsequent materials from moving to the self-checking section. The group of materials that have moved to the self-checking conveying mechanism 1 moves to the second detection unit 3. When the group of materials is detected by the second detection unit 3, two situations may occur. One is that the first detection unit 2 does not detect any materials. In this case, there is no material stacking. The material group has only one material between the first detection unit 2 and the second detection unit 3. This state indicates normal conveying and the self-checking conveying mechanism 1 is working normally, allowing the materials to enter the subsequent counting station. The other is that the group of materials is detected by the second detection unit 3 and the first detection unit 2 at the same time. This means that the group of materials consists of at least two materials stacked together. In this case, an alarm signal is output. The alarm signal includes the self-checking conveying mechanism 1 operating and issuing an alarm through sound, light, etc.; this method can improve the accuracy of subsequent counting.

[0017] When the first detection unit 2 and the second detection unit 3 do not detect the material, the conveying unit restarts to convey new material to the self-detection conveying mechanism 1. The present invention is particularly suitable for materials with a high middle part and low surroundings, such as betel nut.

[0018] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0019] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the scope of protection of the present utility model.

Claims

1. A conveying device with a self-checking mechanism, characterized in that: The invention comprises a conveying part and a self-inspection part, wherein the self-inspection part comprises a self-inspection conveying mechanism (1) and a self-inspection mechanism for detecting materials on the self-inspection conveying mechanism (1), wherein the self-inspection mechanism comprises a first detection unit (2) and a second detection unit (3) arranged at intervals along the conveying direction of the self-inspection conveying mechanism (1), wherein the first detection unit (2) is arranged at the proximal end of the conveying part, wherein the first detection unit (2) and the second detection unit (3) respectively detect the materials, wherein the distance between the first detection unit (2) and the second detection unit (3) is greater than a single size value of the material to be detected but less than twice the size value of the material to be detected, wherein the first detection unit (2) and the second detection unit (3) both output an alarm signal when detecting the materials, and the output signal of the first detection unit (2) is also used to control the operation of the conveying part.

2. A conveying device with a self-checking mechanism according to claim 1, characterized in that: The distance between the first detection unit (2) and the second detection unit (3) is adjustable.

3. A conveying device with a self-checking mechanism according to claim 1, characterized in that: The conveying section comprises at least two sections of conveyors (4) with gradually increasing conveying speeds.

4. A conveying device with a self-checking mechanism according to claim 3, characterized in that: A height limiting portion (5) for limiting the height at which materials can pass is provided on the conveyor (4) at the far end of the self-inspection portion.

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