Online metal detecting and removing device for plastic particles

Abstract

The utility model discloses a plastic particle on-line metal detecting and removing device which comprises a support, a conveying assembly is arranged in the support to convey plastic particles, a metal detector is fixedly connected to the upper surface of the support, a cross rod is fixedly connected to the upper surface of the support, a sliding groove is formed in the upper surface of the cross rod, and the metal detector is arranged in the sliding groove. And the inner wall of the sliding groove is slidably connected with a movable plate used for smoothing the plastic particles, and the upper surface of the transverse rod is fixedly connected with an adjusting assembly used for adjusting the height of the movable plate. Plastic particles which are located on the conveying assembly and are in a conveying state can be smoothed through the movable plate, metal in the plastic particles can be conveniently detected through the metal detector, the height of the movable plate can be adjusted through the adjusting assembly according to needs, and then the thickness of the plastic particles can be controlled. The detection effect of the metal detector is prevented from being affected by too thick or too thin plastic particles, so that the function of smoothing the plastic particles to improve the detection effect is achieved.

Description

Technical Field

[0001] This application relates to the field of metal detection equipment technology, and in particular to an online metal detection and rejection device for plastic particles. Background Technology

[0002] Plastic bottle caps, as an important component of the packaging industry, are widely used in food, beverage, and pharmaceutical fields. Their production typically employs injection molding, with plastic granules as the main raw material. The purity of these granules directly affects the quality and safety of the bottle caps. However, during the production, transportation, and storage of plastic granules, metallic impurities (such as iron, copper, and aluminum) may be introduced. These impurities can not only damage production equipment but also lead to defects in the bottle caps and even pose safety hazards.

[0003] A search revealed that Chinese Patent CN209156461U discloses an online metal detection device, which features high automation, good detection quality, and effective improvement in production efficiency. However, when using a metal detector to detect metals in plastic granules, the thickness of the plastic granules on the conveyor belt affects the detection results. If the accumulation is too thick, the detector cannot effectively penetrate the material, resulting in missed detection of metal impurities. If the accumulation is too thin, the detector may be too sensitive, increasing the false alarm rate. Furthermore, it is difficult to control the thickness of the plastic granules after manual feeding, affecting the working effect of the detector. Therefore, an online metal detection and rejection device for plastic granules is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an online metal detection and rejection device for plastic particles to solve the problems mentioned in the background art.

[0005] The embodiments of this application adopt the following technical solutions:

[0006] An online metal detection and rejection device for plastic granules includes a support frame, a conveying assembly for conveying plastic granules within the support frame, a metal detector fixedly connected to the upper surface of the support frame, a crossbar fixedly connected to the upper surface of the support frame, a groove formed on the upper surface of the crossbar, and a movable plate for smoothing plastic granules slidably connected to the inner wall of the groove, and an adjustment assembly for adjusting the height of the movable plate fixedly connected to the upper surface of the crossbar.

[0007] Preferably, the adjustment assembly includes a frame fixedly connected to the upper surface of the crossbar. The frame is inverted U-shaped. A threaded hole is provided on the upper surface of the frame, and a screw is threadedly connected to the inner wall of the threaded hole. The bottom end of the screw is rotatably connected to the movable plate, and a knob is fixedly connected to the top end of the screw.

[0008] Preferably, a connecting plate is rotatably connected to the bottom of the screw surface, and a pointer is fixedly connected to the end of the connecting plate. The pointer is in contact with one side of the frame, and a height scale line is provided on the side of the frame near the pointer.

[0009] Preferably, a discharge port is provided on one side of the bracket, and a guide plate corresponding to the discharge port is fixedly connected to one side of the bracket. The inner bottom wall of the discharge port and the guide plate are both inclined, and the discharge port and the inner bottom wall of the guide plate are at the same horizontal plane.

[0010] Preferably, a cylinder is fixedly connected to the upper surface of the bracket, a connecting rod is fixedly connected to the output end of the cylinder, a stop rod is fixedly connected to the bottom end of the connecting rod, the stop rod is inclined to the traveling direction of the conveying assembly, and the signal output end of the metal detector is connected to the signal input end of the cylinder through a control circuit.

[0011] Preferably, the inner bottom wall of the discharge port is provided with a limiting groove, and a lifting plate is slidably connected to the inner wall of the limiting groove. A spring is fixedly connected to the lower surface of the lifting plate, and the bottom end of the spring is fixedly connected to the inner bottom wall of the limiting groove. The end of the stop rod extends to form a pressing block for driving the lifting plate to move downward.

[0012] Preferably, the conveying assembly includes a drive roller and a driven roller that are rotatably connected to the inner wall of the support. The surfaces of the drive roller and the driven roller are provided with the same conveyor belt. The drive roller and the driven roller are connected by a conveyor belt drive. A motor is fixedly connected to one side of the support, and the output end of the motor is fixedly connected to the drive roller.

[0013] The above-described technical solutions adopted in the embodiments of this application can achieve the following beneficial effects:

[0014] In this invention, a movable plate can be set to smooth out the plastic granules that are being conveyed on the conveying assembly, so that the metal detector can detect the metal in the plastic granules. By setting an adjustment assembly, the height of the movable plate can be adjusted as needed, thereby controlling the thickness of the plastic granules and avoiding the metal detector's detection effect being affected by the plastic granules being too thick or too thin. Thus, the online metal detection and rejection device for plastic granules has the function of smoothing out plastic granules to improve the detection effect. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 Here is a three-dimensional structural schematic diagram of this utility model;

[0017] Figure 2 Here is a cross-sectional view of the crossbar of this utility model;

[0018] Figure 3 This utility model is: Figure 2 Enlarged structural diagram at point A;

[0019] Figure 4 Here is a three-dimensional structural diagram of the baffle and the impurity removal discharge port of this utility model;

[0020] Figure 5 Here is a schematic diagram of the back section structure of the bracket of this utility model;

[0021] Figure 6 The diagram shows the exploded structure of the conveying component and support of this utility model.

[0022] In the diagram: 1. Support frame; 2. Conveying assembly; 201. Driven roller; 202. Driven roller; 203. Conveyor belt; 204. Motor; 3. Metal detector; 4. Crossbar; 5. Movable plate; 6. Adjusting assembly; 601. Frame; 602. Screw; 603. Knob; 604. Connecting plate; 605. Pointer; 606. Height scale line; 7. Waste discharge port; 8. Guide plate; 9. Cylinder; 10. Connecting rod; 11. Stop bar; 12. Lifting plate; 13. Spring; 14. Pressing block. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0025] Please see Figure 1-6 This utility model provides an online metal detection and rejection device for plastic particles, used for online metal detection in plastic particles during bottle cap production. It has the function of smoothing the plastic particles to improve detection efficiency. Technical solution:

[0026] An online metal detection and rejection device for plastic particles includes a support 1, a conveying assembly 2 inside the support 1 for conveying plastic particles, a metal detector 3 fixedly connected to the upper surface of the support 1, a crossbar 4 fixedly connected to the upper surface of the support 1, a groove formed on the upper surface of the crossbar 4, and a movable plate 5 for smoothing plastic particles slidably connected to the inner wall of the groove, and an adjustment assembly 6 for adjusting the height of the movable plate 5 fixedly connected to the upper surface of the crossbar 4.

[0027] Specifically, by setting up the movable plate 5, the plastic particles in the conveying state on the conveying component 2 can be smoothed out, so that the metal detector 3 can detect the metal in the plastic particles. By setting up the adjustment component 6, the height of the movable plate 5 can be adjusted as needed, thereby controlling the thickness of the plastic particles and avoiding the metal detector's detection effect being affected by the plastic particles being too thick or too thin. Thus, the online metal detection and rejection device for plastic particles has the function of smoothing plastic particles to improve the detection effect.

[0028] The adjusting component 6 includes a frame 601 fixedly connected to the upper surface of the crossbar 4. The frame 601 is inverted U-shaped. A threaded hole is opened on the upper surface of the frame 601, and a screw 602 is threadedly connected to the inner wall of the threaded hole. The bottom end of the screw 602 is rotatably connected to the movable plate 5, and a knob 603 is fixedly connected to the top end of the screw 602. By rotating the knob 603, the screw 602 is rotated, and then, under the limiting cooperation of the slide groove, the movable plate 5 is moved up or down to adjust the distance between the bottom of the movable plate 5 and the upper surface of the conveying component 2, thereby controlling the thickness of the plastic granules.

[0029] A connecting plate 604 is rotatably connected to the bottom of the screw 602. A pointer 605 is fixedly connected to the end of the connecting plate 604. The pointer 605 is attached to one side of the frame 601. A height scale line 606 is provided on the side of the frame 601 near the pointer 605. The upward or downward movement of the screw 602 moves the connecting plate 604, which in turn moves the pointer 605. With the help of the height scale line 606, the user can easily know the adjustment distance of the movable plate 5, as shown in the instruction manual. Figure 2 The movable plate 5 shown is in its lowest position.

[0030] A discharge port 7 is provided on one side of the support 1. A guide plate 8 corresponding to the discharge port 7 is fixedly connected to one side of the support 1. The inner bottom wall of the discharge port 7 and the guide plate 8 are both inclined, and the discharge port 7 and the inner bottom wall of the guide plate 8 are at the same level. By setting the discharge port 7 and the guide plate 8, the plastic particles containing metal can be removed, and then the metal can be separated from the material. Compared with separating all plastic particles from metal, this saves time and cost.

[0031] A cylinder 9 is fixedly connected to the upper surface of the support 1. A connecting rod 10 is fixedly connected to the output end of the cylinder 9. A stop rod 11 is fixedly connected to the bottom end of the connecting rod 10. The stop rod 11 is inclined to the traveling direction of the conveying assembly 2. The signal output end of the metal detector 3 is connected to the signal input end of the cylinder 9 through the control circuit. The output end of the cylinder 9 drives the connecting rod 10 to descend, which in turn drives the stop rod 11 to descend to a position that fits against the upper surface of the conveying assembly 2, guiding the plastic particles containing metal to the discharge port 7 for removal.

[0032] A limiting groove is provided on the inner bottom wall of the discharge port 7, and a lifting plate 12 is slidably connected to the inner wall of the limiting groove. A spring 13 is fixedly connected to the lower surface of the lifting plate 12, and the bottom end of the spring 13 is fixedly connected to the inner bottom wall of the limiting groove. The end of the stop rod 11 extends to form a pressing block 14 for driving the lifting plate 12 to move downward. By setting the spring 13 to cooperate with the lifting plate 12, under normal conditions, the spring 13 supports the lifting plate 12, so that it is located outside the limiting groove to block the plastic particles and prevent the plastic particles from accidentally entering the discharge port 7. By setting the pressing block 14, when the stop rod 11 descends, the pressing block 14 descends with the stop rod 11 and presses the lifting plate 12, so that it enters the interior of the limiting groove and keeps its top flush with the upper surface of the conveying assembly 2, which facilitates the discharge of plastic particles containing metal.

[0033] The conveying assembly 2 includes a drive roller 201 and a driven roller 202 that are rotatably connected to the inner wall of the support 1. The surfaces of the drive roller 201 and the driven roller 202 are provided with the same conveyor belt 203. The drive roller 201 and the driven roller 202 are connected by transmission through the conveyor belt 203. A motor 204 is fixedly connected to one side of the support 1. The output end of the motor 204 is fixedly connected to the drive roller 201. The output end of the motor 204 drives the drive roller 201 to rotate, which in turn drives the conveyor belt 203 to move in cooperation with the driven roller 202, thus conveying the plastic particles located on the conveyor belt 203 and allowing them to pass through the metal detector 3 for metal detection.

[0034] Working Principle: When using the online metal detection and rejection device for plastic granules, the user first rotates knob 603, causing knob 603 to drive screw 602 to rotate. Under the limiting action of the slide groove, screw 602 drives movable plate 5 upwards to adjust the distance between the bottom of movable plate 5 and the upper surface of conveying assembly 2, controlling the thickness of the plastic granules as needed. During this process, the upward movement of screw 602 drives connecting plate 604 to move, which in turn drives pointer 605 to move. The user simultaneously observes the height scale line 606 pointed to by pointer 605 to easily determine the adjustment distance of movable plate 5. Then, the metal detector 3 and motor 204 are started. The output of motor 204 drives drive roller 201 to rotate. Driven roller 201, in conjunction with driven roller 202, drives conveyor belt 203 to move, targeting the metal granules located at... Plastic granules on conveyor belt 203 are conveyed and passed through metal detector 3 for metal detection. When metal detector 3 detects metal in the plastic granules, it sends a signal to the control circuit, which controls the output of cylinder 9 to drive connecting rod 10 to descend. Connecting rod 10 drives baffle 11 to descend to a position that is in contact with the upper surface of conveying assembly 2, guiding the plastic granules containing metal to the discharge port 7 for removal. At the same time, baffle 11 drives pressing block 14 to descend and press lifting plate 12, so that lifting plate 12 enters the limiting groove and keeps its top flush with the upper surface of conveying assembly 2, facilitating the discharge of plastic granules containing metal. Then, the metal in the removed plastic granules can be screened out separately, thus enabling the online metal detection and removal device for plastic granules to smooth the plastic granules to improve the detection effect.

[0035] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A plastic particle on-line metal detection and rejection device, comprising a support (1), a conveying assembly (2) is arranged in the support (1) to convey plastic particles, and a metal detector (3) is fixedly connected to the upper surface of the support (1), characterized in that: A crossbar (4) is fixedly connected to the upper surface of the bracket (1). A groove is provided on the upper surface of the crossbar (4), and a movable plate (5) for smoothing plastic particles is slidably connected to the inner wall of the groove. An adjustment component (6) for adjusting the height of the movable plate (5) is fixedly connected to the upper surface of the crossbar (4).

2. The device according to claim 1, wherein: The adjustment assembly (6) includes a frame (601) fixedly connected to the upper surface of the crossbar (4). The frame (601) is inverted U-shaped. The upper surface of the frame (601) is provided with a threaded hole, and a screw (602) is threadedly connected to the inner wall of the threaded hole. The bottom end of the screw (602) is rotatably connected to the movable plate (5), and a knob (603) is fixedly connected to the top end of the screw (602).

3. The apparatus according to claim 2, wherein: A connecting plate (604) is rotatably connected to the bottom of the surface of the screw (602). A pointer (605) is fixedly connected to the end of the connecting plate (604). The pointer (605) is attached to one side of the frame (601). A height scale line (606) is provided on the side of the frame (601) near the pointer (605).

4. The apparatus according to claim 1, wherein: The bracket (1) has a discharge port (7) on one side, and a guide plate (8) corresponding to the discharge port (7) is fixedly connected to one side of the bracket (1). The inner bottom wall of the discharge port (7) and the guide plate (8) are both inclined, and the discharge port (7) and the inner bottom wall of the guide plate (8) are on the same horizontal plane.

5. The apparatus according to claim 4, wherein: A cylinder (9) is fixedly connected to the upper surface of the bracket (1). A connecting rod (10) is fixedly connected to the output end of the cylinder (9). A stop rod (11) is fixedly connected to the bottom end of the connecting rod (10). The stop rod (11) is inclined to the traveling direction of the conveying assembly (2). The signal output end of the metal detector (3) is connected to the signal input end of the cylinder (9) through a control circuit.

6. The apparatus according to claim 5, wherein: The inner bottom wall of the discharge port (7) is provided with a limiting groove, and the inner wall of the limiting groove is slidably connected to a lifting plate (12). The lower surface of the lifting plate (12) is fixedly connected to a spring (13), the bottom end of the spring (13) is fixedly connected to the inner bottom wall of the limiting groove, and the end of the stop rod (11) extends to form a pressing block (14) for driving the lifting plate (12) to move downward.

7. The apparatus according to claim 1, wherein: The conveying assembly (2) includes a drive roller (201) and a driven roller (202) that are rotatably connected to the inner wall of the support (1). The surfaces of the drive roller (201) and the driven roller (202) are provided with the same conveyor belt (203). The drive roller (201) and the driven roller (202) are connected by transmission through the conveyor belt (203). A motor (204) is fixedly connected to one side of the support (1). The output end of the motor (204) is fixedly connected to the drive roller (201).

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