Rapid screening device for plastic beads
By combining a hopper, a feeding pipe, a rejection mechanism, and a vision inspection component, automated screening of plastic beads is achieved, solving the problem of low screening accuracy in existing technologies and improving production efficiency and classification accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEYUAN CITY MINGRUI PLASTIC & HARDWARE PROD CO LTD
- Filing Date
- 2025-03-25
- Publication Date
- 2026-04-21
AI Technical Summary
Existing plastic bead screening equipment struggles to achieve high-precision screening, especially in terms of its inability to automatically distinguish between size and color, resulting in low production efficiency and increased labor intensity.
By employing a hopper, a guide pipe, a rejection mechanism, a conveyor belt, a color sorting mechanism, and a discharge track, combined with a laser rangefinder and a vision inspection component, the system achieves automated size and color sorting of plastic beads.
It improves screening accuracy, reduces manual intervention, increases production efficiency, and ensures the accuracy of plastic bead size and color classification.
Smart Images
Figure CN224142898U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic bead screening devices, and in particular to a rapid plastic bead screening device. Background Technology
[0002] Plastic beads are plastic products used in decoration, handicrafts, and functional products. They are generally used in decorative applications such as beaded curtains, ornaments, or toys. Among them, plastic beads used for door curtains are usually made of materials such as polyethylene, polypropylene, or polyvinyl chloride. These types of plastic beads have high quality requirements in terms of size, color, and surface smoothness during the production process to ensure their aesthetics and uniformity after assembly.
[0003] In existing technologies, the screening process generally relies on traditional mechanical screening or manual selection. Traditional screening equipment typically only performs rough sorting based on the particle size of plastic beads, which is insufficient to meet the requirements of high-precision screening. This results in some plastic beads with large size deviations being mixed into qualified products, affecting the overall neatness of the curtain arrangement. In addition, most existing screening equipment cannot automatically distinguish colors, requiring secondary manual screening after size screening, which increases labor intensity and production costs, and reduces production efficiency.
[0004] Therefore, existing technologies have shortcomings and need to be improved. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a rapid screening device for plastic beads with high screening accuracy and automatic screening of product size and color.
[0006] To achieve this objective, the present invention adopts the following technical solution: a rapid screening device for plastic beads, comprising a hopper, a guide pipe, a first discharge pipe, a second discharge pipe, a rejection mechanism, a conveyor belt, a color sorting mechanism, and a discharge track;
[0007] The hopper is used to hold plastic beads to be screened. The feed pipe is connected to the bottom of the hopper. The feed pipe has an open channel for the plastic beads to slide. The first discharge pipe is located at one end of the open channel. The rejection mechanism is located at the other end of the open channel. The rejection mechanism is used to push plastic beads that fail the size inspection into the first discharge pipe.
[0008] The second discharge pipe is connected to the open channel and is located above the conveyor belt. The second discharge pipe is used to transport plastic beads that have passed the size inspection to the conveyor belt.
[0009] The color sorting mechanism includes a guide rail, a vision inspection component, a redirection rail, and a swing mechanism. The guide rail is located on both sides of the conveyor belt and is used to limit and guide the conveying of plastic beads. The vision inspection component is located above the guide rail and is used to detect the color of the plastic beads.
[0010] The end of the redirecting track is oscillatingly connected to the guide track via a hinge. The oscillation mechanism is located above the conveyor belt and connected to the redirecting track. The oscillation mechanism is used to adjust the oscillation angle of the redirecting track. Multiple discharge tracks are respectively located at the ends of the conveyor belt. The discharge tracks are used to receive plastic beads conveyed from the redirecting track.
[0011] Using the above technical solution, in the rapid screening device for plastic beads, the rejection mechanism includes a first sensor, a pushing cylinder, and a pushing rod;
[0012] The first sensor is located above the material guide pipe and is used to detect the diameter of the plastic beads located in the open channel. The pusher cylinder is located at the side end of the open channel, and its movable end is connected to the pusher rod. The pusher cylinder is used to drive the pusher rod to extend and retract in the direction of the second discharge pipe.
[0013] Using the above technical solution, in the rapid screening device for plastic beads, the rejection mechanism further includes a second sensor, which is located at the inlet of the second discharge pipe and is used to sense whether the plastic beads are in place.
[0014] Using the above technical solution, in the rapid screening device for plastic beads, the swing mechanism includes a fixed frame, a drive motor, a swing arm, and a connecting frame;
[0015] The fixed frame is installed above the conveyor belt, and the drive motor is installed on the fixed frame with its movable end facing downward and connected to one end of the swing arm. The other end of the swing arm is connected to the redirecting track through the connecting frame. The drive motor is used to adjust the swing direction of the redirecting track through the swing arm so that it is connected to the discharge track.
[0016] In the aforementioned technical solution, the first sensor in the rapid plastic bead screening device is a laser rangefinder.
[0017] Using the above technical solution, the number of discharge tracks in the rapid screening device for plastic beads is four.
[0018] The above-mentioned technical solution includes a collection bucket located at the bottom of the discharge track to collect plastic beads falling from the discharge track.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] This invention utilizes a hopper and a guide pipe to allow plastic beads to slide into an open channel under gravity. A rejection mechanism inspects the size of the plastic beads, pushing out unqualified beads to the first discharge pipe to prevent them from entering subsequent screening stages. Qualified plastic beads fall onto a conveyor belt through a second discharge pipe. A vision inspection component on the conveyor belt identifies the color of the plastic beads in real time and transmits the results to a swing mechanism. The swing mechanism adjusts the angle of the guide rail according to color classification, ensuring precise alignment with the corresponding discharge rail. This allows plastic beads of different colors to accurately fall into their respective discharge rails, achieving automated color classification, effectively improving screening accuracy, reducing manual intervention, and increasing production efficiency. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0024] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective;
[0025] Figure 3 This is a schematic diagram of the swing mechanism structure of this utility model;
[0026] Figure 4 This is a schematic diagram of the rejection mechanism of this utility model;
[0027] Figure 5 This is a schematic diagram of the material guiding pipe structure of this utility model. Detailed Implementation
[0028] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.
[0029] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.
[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0031] like Figures 1 to 5 As shown, this utility model embodiment provides a rapid plastic bead screening device, including a hopper 1, a guide pipe 2, a first discharge pipe 31, a second discharge pipe 32, a rejection mechanism 4, a conveyor belt 5, a color sorting mechanism 6, and a discharge track 7. The hopper 1 is used to hold the plastic beads to be screened. The guide pipe 2 is connected to the bottom of the hopper 1 and has an open channel 20 for the plastic beads to slide. The first discharge pipe 31 is located at one end of the open channel 20, and the rejection mechanism 4 is located at the other end of the open channel 20. The rejection mechanism 4 is used to push plastic beads that fail the size inspection into the first discharge pipe 31. The second discharge pipe 32 is connected to the open channel 20. The second discharge pipe 32 is located above the conveyor belt 5. The second discharge pipe 32 is used to transport plastic beads that have passed the size inspection to the conveyor belt 5. The plastic beads to be screened are placed into the hopper 1. Under the action of gravity, the plastic beads will slide down the guide pipe 2 into the open channel 20. The rejection mechanism 4 can detect the size of the plastic beads. If the size of the plastic beads is not qualified, the rejection mechanism 4 can push them to the first discharge pipe 31 to separate them from the qualified products and prevent them from flowing into the subsequent process. On the contrary, the plastic beads that have passed the size inspection continue to slide along the open channel 20 to enter the second discharge pipe 32, which is connected to the open channel 20, and fall onto the conveyor belt 5 through the second discharge pipe 32 so as to enter the next color screening stage.
[0032] like Figure 1 and Figure 2 As shown, the color sorting mechanism 6 includes a guide rail 61, a vision inspection component 62, a redirection rail 63, and a swing mechanism 64. The guide rail 61 is located on both sides of the conveyor belt 5 and is used to guide and limit the conveying of plastic beads. The vision inspection component 62 is located above the guide rail 61 and is used to detect the color of the plastic beads. The end of the redirection rail 63 is swayably connected to the guide rail 61 via a hinge (not shown). The swing mechanism 64 is located above the conveyor belt 5 and is connected to the redirection rail 63. The swing mechanism 64 is used to adjust the swing angle of the redirection rail 63. Multiple discharge rails 7 are respectively located at the end of the conveyor belt 5 and are used to receive plastic beads conveyed from the redirection rail 63. After the plastic beads are sorted by size, they are conveyed to the color sorting area by the conveyor belt 5. The guide rail 61 can limit and guide the plastic beads to keep them moving stably on the conveyor belt 5. When the plastic beads pass the vision detection component 62, the vision detection component 62 can identify their color in real time. The swing mechanism 64 can adjust the swing angle of the redirection rail 63 according to the identified color information, so that it can accurately connect with the corresponding discharge rail 7, thereby conveying plastic beads of different colors into the corresponding discharge rail 7, thus achieving accurate color classification.
[0033] like Figure 4 As shown, the rejection mechanism 4 further includes a first sensor 41, a pushing cylinder 42, and a pushing rod 43. The first sensor 41 is located above the guide pipe 2 and is used to detect the diameter of the plastic beads located in the open channel 20. The pushing cylinder 42 is located at the side end of the open channel 20, and its movable end is connected to the pushing rod 43. The pushing cylinder 42 is used to drive the pushing rod 43 to extend and retract towards the second discharge pipe 32. When the first sensor 41 detects that the diameter of a plastic bead exceeds the set range, the system controls the pushing cylinder 42 to perform an action, thereby pushing the unqualified plastic bead out of the open channel 20 and into the first discharge pipe 31, thus achieving the separation operation from qualified products.
[0034] like Figure 1 and Figure 4 As shown, the rejection mechanism 4 further includes a second sensor 44, which is located at the inlet of the second discharge pipe 32. The second sensor 44 is used to sense whether the plastic beads are in place, so as to prevent unqualified plastic beads from entering the qualified channel due to detection errors or abnormal conditions.
[0035] like Figures 1 to 3As shown, the swing mechanism 64 further includes a fixed frame 641, a drive motor 642, a swing arm 643, and a connecting frame 644. The fixed frame 641 is located above the conveyor belt 5. The drive motor 642 is mounted on the fixed frame 641, with its movable end facing downwards and connected to one end of the swing arm 643. The other end of the swing arm 643 is connected to the redirecting track 63 via the connecting frame 644. The drive motor 642 is used to adjust the swing direction of the redirecting track 63 through the swing arm 643, so that it corresponds and connects with the discharge track 7. When the control system receives a color sorting command, the drive motor 642 starts, driving the swing arm 643 to rotate, causing the angle of the redirecting track 63 to change, thereby adjusting its outlet direction and precisely aligning it with the preset discharge track 7. In this way, when the plastic bead slides out from the redirecting track 63, it can accurately fall into the discharge track 7 that matches its color, thus ensuring the accuracy of color sorting.
[0036] Furthermore, the first sensor 41 is a laser rangefinder. The laser rangefinder can perform high-precision measurement of a sliding plastic bead without contact. The laser beam it emits can quickly and accurately capture the boundary information of the plastic bead and calculate its diameter, avoiding mismeasurement caused by unstable contact in traditional measurement methods.
[0037] like Figure 1 and Figure 2 As shown, the number of discharge tracks 7 is four. Setting four sets of discharge tracks 7 can meet the needs of more precise color classification, so that plastic beads of different colors can be directly guided to the corresponding discharge tracks 7.
[0038] like Figure 2 As shown, it further includes a collection bin 8, which is located at the bottom of the discharge track 7 to collect plastic beads falling from the discharge track 7. The collection bin 8 at the bottom of the discharge track 7 allows the screened plastic beads to fall directly into the designated collection area, which not only prevents the beads from scattering, but also ensures that plastic beads of different colors and sizes are stored independently, avoiding mixing again and affecting subsequent use.
[0039] This invention utilizes a hopper and a guide pipe to allow plastic beads to slide into an open channel under gravity. A rejection mechanism inspects the size of the plastic beads, pushing out unqualified beads to the first discharge pipe to prevent them from entering subsequent screening stages. Qualified plastic beads fall onto a conveyor belt through a second discharge pipe. A vision inspection component on the conveyor belt identifies the color of the plastic beads in real time and transmits the results to a swing mechanism. The swing mechanism adjusts the angle of the guide rail according to color classification, ensuring precise alignment with the corresponding discharge rail. This allows plastic beads of different colors to accurately fall into their respective discharge rails, achieving automated color classification, effectively improving screening accuracy, reducing manual intervention, and increasing production efficiency.
[0040] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A rapid screening device for plastic beads, characterized in that, It includes a hopper, a guide pipe, a first discharge pipe, a second discharge pipe, a rejection mechanism, a conveyor belt, a color sorting mechanism, and a discharge track; The hopper is used to hold plastic beads to be screened. The feed pipe is connected to the bottom of the hopper. The feed pipe has an open channel for the plastic beads to slide. The first discharge pipe is located at one end of the open channel. The rejection mechanism is located at the other end of the open channel. The rejection mechanism is used to push plastic beads that fail the size inspection into the first discharge pipe. The second discharge pipe is connected to the open channel and is located above the conveyor belt. The second discharge pipe is used to transport plastic beads that have passed the size inspection to the conveyor belt. The color sorting mechanism includes a guide rail, a vision inspection component, a redirection rail, and a swing mechanism. The guide rail is located on both sides of the conveyor belt and is used to limit and guide the conveying of plastic beads. The vision inspection component is located above the guide rail and is used to detect the color of the plastic beads. The end of the redirecting track is oscillatingly connected to the guide track via a hinge. The oscillation mechanism is located above the conveyor belt and connected to the redirecting track. The oscillation mechanism is used to adjust the oscillation angle of the redirecting track. Multiple discharge tracks are respectively located at the ends of the conveyor belt. The discharge tracks are used to receive plastic beads conveyed from the redirecting track.
2. The device for rapid screening of plastic beads according to claim 1, characterized in that, The rejection mechanism includes a first sensor, a pushing cylinder, and a pushing rod; The first sensor is located above the material guide pipe and is used to detect the diameter of the plastic beads located in the open channel. The pusher cylinder is located at the side end of the open channel, and its movable end is connected to the pusher rod. The pusher cylinder is used to drive the pusher rod to extend and retract in the direction of the second discharge pipe.
3. The device of claim 2, wherein, The rejection mechanism also includes a second sensor located at the inlet of the second discharge pipe, which is used to sense whether the plastic beads are in place.
4. The device of claim 1, wherein, The swing mechanism includes a fixed frame, a drive motor, a swing arm, and a connecting frame; The fixed frame is installed above the conveyor belt, and the drive motor is installed on the fixed frame with its movable end facing downward and connected to one end of the swing arm. The other end of the swing arm is connected to the redirecting track through the connecting frame. The drive motor is used to adjust the swing direction of the redirecting track through the swing arm so that it is connected to the discharge track.
5. The device of claim 2, wherein, The first sensor is a laser rangefinder.
6. The device of claim 1, wherein, The number of discharge tracks is four.
7. The device of claim 6, wherein, It also includes a collection bin, which is located at the bottom of the discharge track to collect plastic beads falling from the discharge track.