Metal detector with weighing function

Abstract

This utility model belongs to the field of metal detection, especially a metal detector with weighing function. Addressing the problem that existing methods fail to evenly distribute small particles inside bags on the conveyor belt, leading to inconsistent thickness and affecting detection quality, the following solution is proposed: The detector body comprises a conveyor belt and a detector positioned above it. Baffles are fixedly installed on both sides of the detector body; a support plate is fixedly connected between the bottoms of the two baffles, located below the conveyor belt; a drive motor is fixedly installed at the bottom of the support plate, its output shaft being connected to a reciprocating lead screw via a universal coupling; a sliding sleeve is fitted onto the outer wall of the reciprocating lead screw. This utility model, through mechanical linkage and elastic reset technology, automatically and evenly distributes the particles inside the bag during conveying, and, combined with flexible transmission, achieves simultaneous weighing and metal detection, significantly improving detection accuracy and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of metal detection technology, and in particular to a metal detection machine with weighing function. Background Technology

[0002] The metal detector with weighing function is an intelligent device that integrates metal foreign object detection and weight measurement. It is suitable for industries such as food and medicine. It uses high-precision sensors to simultaneously complete metal detection and weighing, ensuring product quality and safety, improving production efficiency, realizing one-stop quality inspection, and saving space and costs.

[0003] When metal detectors test bagged salt, monosodium glutamate, sugar, millet, etc., because the particles are small, when the bags are placed on the detector manually, the small particles inside the bags tend to clump together and cannot be evenly spread on the conveyor belt of the detector. The uneven thickness of the clumps can easily affect the quality of the test. Utility Model Content

[0004] The purpose of this invention is to solve the shortcomings of existing technologies where small particles inside the bag cannot be evenly spread on the conveyor belt of the testing machine, and the uneven thickness of the accumulated particles can easily affect the testing quality. Therefore, this invention proposes a metal testing machine with a weighing function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A metal detector with weighing function includes a detector body, which consists of a conveyor belt and a detector located above the conveyor belt; Baffles are fixedly installed on both sides of the main body of the testing machine; a support plate is fixedly connected between the bottom of the two baffles, and the support plate is located below the conveyor belt; The support plate is fixedly installed with a drive motor at the bottom, and its output shaft is connected to a reciprocating lead screw through a universal coupling. The reciprocating screw is fitted with a sliding sleeve on its outer wall, and the reciprocating screw slides with the slider inside the sliding sleeve through a reciprocating thread; a horizontal plate is fixedly connected to the top of the sliding sleeve, and multiple push blocks are provided on the top of the horizontal plate. Multiple push rollers are provided between the two baffles, and the push block contacts and cooperates with the push rollers.

[0006] In one possible design, a single pusher block reciprocates in sequence with two push rollers, and the reciprocating movement of the horizontal plate causes the two push rollers to push upward one by one. Square sleeves are fitted at both ends of the push roller, and multiple moving grooves are provided in both baffles. The square sleeves slide up and down in the moving grooves.

[0007] In one possible design, a hollow column is fixedly connected to the inner wall of the bottom of the movable groove, and a connecting column is slidably connected inside the hollow column. The connecting column extends above the hollow column and is fixedly connected to the bottom of the square sleeve. A spring is fitted on the outer wall of the connecting column, and the two ends of the spring are hooked and connected to the top of the hollow column and the bottom of the square sleeve, respectively, to achieve the elastic reset of the push roller.

[0008] In one possible design, a support frame is fixedly installed on the top of the support plate, the two ends of the reciprocating screw are rotatably connected to the support frame, the sliding sleeve slides inside the support frame, and the cross plate is slidably connected to the top of the support frame to ensure the stability of the reciprocating movement.

[0009] In one possible design, the pusher rollers push the conveyor belt upwards, causing it to arch. During the arching process, the particles inside the bag are pushed, and through the movement of the particles, they are evenly spread out inside the bag, eliminating the accumulation phenomenon.

[0010] In one possible design, a control switch is located on one side of the testing machine body, and the control switch simultaneously starts the conveyor belt and the drive motor; The drive motor forms a flexible transmission structure with the reciprocating lead screw through a universal coupling, which can adapt to the vibration environment when the conveyor belt is running.

[0011] In this application, the bagged small particles to be weighed are placed on the conveyor belt of the testing machine. The testing machine is started by a control switch on one side of the machine, which also powers on the drive motor. The conveyor belt transports the items to be tested below the detector. Before entering the detector, the output shaft of the drive motor drives a reciprocating screw to rotate via a universal coupling. When the reciprocating screw rotates, the reciprocating threads on the outer wall of the reciprocating screw slide into the slider inside the sliding sleeve, thereby causing the sliding sleeve to move left and right on the reciprocating screw. The sliding sleeve drives the horizontal plate to move, and multiple push blocks at the top of the horizontal plate contact and engage with the push rollers. Each push block reciprocates with two push rollers in sequence, thereby causing the two... The push rollers push upward one by one. Each end of the push roller is fitted with a square sleeve. Multiple square sleeves slide up and down in multiple moving slots. When the push roller pushes upward through the horizontal plate, the two ends of the push roller drive the square sleeves to move upward. The square sleeves pull the spring to extend, and through the square sleeves, drive the connecting column to slide upward in the hollow column. When the push block moves away from pushing the push roller, the spring contracts and resets, driving the push roller to move downward. At the same time, the connecting column slides downward in the hollow column. When the push roller pushes upward, the conveyor belt on the main body of the detection machine arches upward. When it arches, it pushes the particles in the bag. As the particles are arched and lowered, they move relative to each other, thus forming a flattened layer in the bag, making the thickness of the particles in the bag uniform.

[0012] Beneficial effects: In this utility model, when bagged granules are conveyed, as the pusher blocks lift the pusher rollers one by one, the conveyor belt arches up, causing the granules to shift relative to each other, effectively eliminating the accumulation phenomenon and ensuring that the weighing data accurately reflects the actual weight. In this utility model, the metal detector with weighing function is driven by a motor through a universal coupling to drive a reciprocating mechanism. With the automatic reset function of the spring, it can complete the dual function verification of particle leveling and metal foreign object detection while ensuring the stable operation of the conveyor belt. In this invention, mechanical linkage and elastic reset technology are used to automatically and evenly spread the particles inside the bag during the conveying process. Combined with flexible transmission, weighing and metal detection are carried out simultaneously, which significantly improves detection accuracy and production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the metal detector with weighing function proposed in this utility model; Figure 2 This is a cross-sectional structural schematic diagram of the support plate of the metal detector with weighing function proposed in this utility model; Figure 3 This is a multi-angle cross-sectional structural diagram of the support plate of the metal detector with weighing function proposed in this utility model. Figure 4 This is a schematic diagram of part A of the metal detector with weighing function proposed in this utility model.

[0014] In the diagram: 1. Inspection machine body; 2. Baffle; 3. Support plate; 4. Push roller; 5. Horizontal plate; 6. Push block; 7. Sliding sleeve; 8. Reciprocating screw; 9. Drive motor; 10. Support frame; 11. Moving groove; 12. Connecting column; 13. Spring; 14. Square sleeve; 15. Hollow column. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] In one embodiment: Refer to Figures 1 to 3 This is a metal detector with weighing function, used in the field of metal detection. The detector body 1 consists of a conveyor belt and a detector located above the conveyor belt. Baffles 2 are fixedly installed on both sides of the conveyor belt of the detector body 1, and a support plate 3 is welded between the bottoms of the two baffles 2. The support plate 3 is located below the conveyor belt. The bottom of the support plate 3 is fixed with a drive motor 9 by bolts. The output shaft of the drive motor 9 is connected to the end of a reciprocating screw 8 through a universal coupling. The outer wall of the reciprocating screw 8 is machined with reciprocating threads. A slider is embedded in the sliding sleeve 7, and the slider and the reciprocating threads of the reciprocating screw 8 form a sliding fit. A horizontal plate 5 is welded to the top of the sliding sleeve 7, and multiple push blocks 6 are arranged at equal intervals on the top surface of the horizontal plate 5.

[0017] Reference Figures 2 to 4Multiple push rollers 4 are installed below the conveyor belt, and the movement trajectory of the push block 6 is tangent to the outer wall of the push roller 4. During the movement cycle of a single push block 6, it contacts two push rollers 4 in sequence, and the two push rollers 4 are alternately pushed upward by the reciprocating movement of the horizontal plate 5. Square sleeves 14 are sleeved at both ends of the push roller 4, and multiple sets of vertical moving grooves 11 are opened on the inner side of the baffle 2. The square sleeves 14 are embedded in the corresponding moving grooves 11 to form sliding guides.

[0018] Reference Figure 2 A hollow column 15 is welded to the bottom of the moving groove 11. A connecting column 12 is installed inside the hollow column 15. The top of the connecting column 12 is welded to the bottom surface of the square sleeve 14, and the bottom extends into the inner cavity of the hollow column 15. A spring 13 is sleeved on the outer wall of the connecting column 12. The upper end of the spring 13 is hooked to the bottom surface of the square sleeve 14, and the lower end is hooked to the top surface of the hollow column 15. A support frame 10 is welded to the top surface of the support plate 3. The two ends of the reciprocating screw 8 are rotatably connected to the support frame 10 through bearings. The outer wall of the sliding sleeve 7 and the inner wall of the support frame 10 form a sliding fit. The bottom surface of the horizontal plate 5 and the sliding groove opened on the top surface of the support frame 10 form a sliding fit.

[0019] In another embodiment: Reference Figures 1 to 4 An improvement upon Example 1: When the bagged granules are placed on the conveyor belt, the operator activates the control switch on the side of the detection machine body 1. Simultaneously, the drive motor 9 is powered on as the conveyor belt begins to operate. The drive motor 9 drives the reciprocating screw 8 to rotate via a universal coupling. The slider inside the sliding sleeve 7 moves along the reciprocating thread trajectory, driving the horizontal plate 5 and the push block 6 to perform reciprocating linear motion. Each push block 6 periodically pushes two push rollers 4, causing the push rollers 4 to move the square sleeve 14 upwards along the moving groove 11. Simultaneously, the connecting column 12 slides within the hollow column 15 while stretching the spring 13. The push rollers 4 lift the conveyor belt, forming an arch. During this arching process, the granules inside the bag undergo relative displacement, achieving automatic leveling. When push block 6 disengages, spring 13 resets, causing push roller 4 to move downwards, and the conveyor belt returns to a straight state, completing one work cycle. The flattened bagged particles enter the area below the detector for testing. If the detector detects metal in the bag, the conveyor belt continues to transport the bagged particles containing metal. When the particles are transported to one side of the cylinder output shaft, the PLC control system extends the cylinder output shaft to push the bagged particles containing metal to one side of the conveyor belt, thus rejecting the entire bagged particles containing metal. When the bagged particles are too heavy or too light, after weighing detection by the detector, the conveyor belt transports the bagged particles that do not meet the weight standard to one side of the cylinder output end. The PLC control system extends the cylinder output shaft to push the bagged particles that do not meet the weight standard to one side of the conveyor belt, thus rejecting the entire bagged particles that do not meet the weight standard.

[0020] However, as is well known to those skilled in the art, the working principle and wiring method of the drive motor 9 are conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0021] The brand and model of the testing machine body 1 in this application document are the same as those of the Kenwei JW-GC212 integrated weight metal testing machine.

[0022] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A metal detector with weighing function, comprising a detector body (1), the detector body (1) being composed of a conveyor belt and a detector located above the conveyor belt, characterized in that: The two sides of the main body (1) of the testing machine are fixedly installed with baffles (2); a support plate (3) is fixedly connected between the bottom of the two baffles (2), and the support plate (3) is located below the conveyor belt; The support plate (3) is fixedly installed with a drive motor (9) at the bottom, and its output shaft is connected to a reciprocating screw (8) through a universal coupling. The reciprocating screw (8) is fitted with a sliding sleeve (7) on its outer wall. The reciprocating screw (8) slides with the slider inside the sliding sleeve (7) through a reciprocating thread. The top of the sliding sleeve (7) is fixedly connected to a horizontal plate (5), and the top of the horizontal plate (5) is provided with multiple push blocks (6). Multiple push rollers (4) are provided between the two baffles (2), and the push block (6) contacts and cooperates with the push rollers (4).

2. The metal detector with weighing function according to claim 1, characterized in that: A single push block (6) reciprocates in turn with two push rollers (4), and the two push rollers (4) are pushed upward one by one by the reciprocating movement of the horizontal plate (5); Square sleeves (14) are fitted at both ends of the push roller (4), and multiple moving grooves (11) are provided in both baffles (2). The square sleeves (14) slide up and down in the moving grooves (11).

3. The metal detector with weighing function according to claim 2, characterized in that: A hollow column (15) is fixedly connected to the inner wall of the bottom of the movable groove (11), and a connecting column (12) is slidably connected inside the hollow column (15). The connecting column (12) extends above the hollow column (15) and is fixedly connected to the bottom of the square sleeve (14). A spring (13) is fitted on the outer wall of the connecting column (12). The two ends of the spring (13) are hooked and connected to the top of the hollow column (15) and the bottom of the square sleeve (14) respectively, so as to realize the elastic reset of the push roller (4).

4. The metal detector with weighing function according to claim 1, characterized in that: The support plate (3) is fixedly installed with the support frame (10). The two ends of the reciprocating screw (8) are rotatably connected to the support frame (10). The sliding sleeve (7) slides inside the support frame (10). The horizontal plate (5) is slidably connected to the top of the support frame (10) to ensure the stability of the reciprocating movement.

5. The metal detector with weighing function according to any one of claims 1 to 4, characterized in that: When the push roller (4) pushes upward, it causes the conveyor belt to arch. During the arching process, it pushes the particles in the bag. Through the mutual movement between the particles, it forms a uniform spread in the bag and eliminates the accumulation phenomenon.

6. The metal detector with weighing function according to claim 1, characterized in that: A control switch is provided on one side of the main body (1) of the testing machine. The control switch simultaneously starts the conveyor belt and the drive motor (9). The drive motor (9) forms a flexible transmission structure with the reciprocating screw (8) through a universal coupling, which can adapt to the vibration environment when the conveyor belt is running.

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