Needle detector for detecting finished footwear packaging box

Abstract

A needle detector used for detecting a shoe finished product packaging box comprises an upper detection part and a lower detection part, the upper detection part is located above the lower detection part, the upper detection part comprises an upper detection module, the upper detection module comprises a first mounting plate, a plurality of permanent magnet assemblies are arranged on the first mounting plate along a straight line, and the permanent magnet assemblies are arranged on the first mounting plate. The lower detection part comprises a lower detection module, the lower detection module comprises a second installation plate, two rows of parallel coil assemblies are arranged on the second installation plate, the two rows of coil assemblies are arranged in a staggered mode, and the two rows of coil assemblies are arranged in a staggered mode. And any row of coil assemblies respectively comprise a plurality of coil assemblies which are arranged along a straight line. The upper detection part adopts a single-row permanent magnet assembly, a coil is replaced by a single-row permanent magnet, the sensitivity and the induction degree are reduced, and the detection precision of each gear is reduced by 20% through a large number of tests and tests, so that the device can be used for detecting shoe finished product packaging boxes with more impurities, and the occurrence of false detection is reduced.

Description

Technical Field

[0001] The utility model relates to the field of physics, in particular to metal detection technology, and particularly to a needle detector for detecting finished shoe packaging boxes. Background Art

[0002] The inspection of textile imports and exports is becoming increasingly strict. Any products with sewing steel needle breakage, stapler pins, or other metal fragments left in the textiles will be detained by the customs. For this reason, production enterprises have successively added needle detector equipment for detecting sewing steel needle breakage, stapler pins, and other metal fragments to ensure the smooth passing of their products. For example, the needle detector probe head with the publication number CN201765211U. However, in the prior art, the sensitivity and induction of the needle detector are too high and only suitable for the normal detection range. When detecting finished shoe packaging boxes, due to too many impurities in the packaging boxes, the high sensitivity often leads to false detections. Summary of the Invention

[0003] The purpose of the utility model is to provide a needle detector for detecting finished shoe packaging boxes, and the needle detector for detecting finished shoe packaging boxes is to solve the technical problem that high sensitivity often leads to false detections in the prior art.

[0004] A needle detector for detecting finished shoe packaging boxes of the utility model includes an upper detection component and a lower detection component. The upper detection component is located above the lower detection component. The upper detection component includes an upper detection module. The upper detection module includes a first mounting plate. A number of permanent magnet assemblies are arranged in a straight line on the first mounting plate. Any one of the permanent magnet assemblies includes two permanent magnets arranged vertically. The lower detection component includes a lower detection module. The lower detection module includes a second mounting plate. Two rows of parallel coil assemblies are arranged on the second mounting plate. The two rows of coil assemblies are arranged in a staggered manner. Any one row of coil assemblies includes a number of coils arranged in a straight line. An iron core is arranged in any one of the coils.

[0005] Furthermore, the permanent magnet assemblies and the coil assemblies are respectively fixed to the first mounting plate and the second mounting plate by screws.

[0006] Furthermore, the two rows of coil assemblies are arranged with a stagger in the coil arrangement direction, and the distance of the stagger is equal to the radius of the coil.

[0007] Compared with the prior art, the effects of the present utility model are positive and obvious. The upper detection component adopts a single-row permanent magnet assembly, using a single-row permanent magnet to replace the coil, reducing the sensitivity and induction. After a large number of tests and measurements, the detection accuracy of each gear drops by 20%, so it can be used to detect the finished shoe box with more impurities, reducing the occurrence of misdetection. The coil assemblies of the lower detection module are arranged in a "pin" shape, that is, two rows of coil assemblies are arranged in a staggered manner. In this way, there is no vertical through-gap between the two rows of coils, and there is no detection blind area, improving the accuracy rate. Description of the Drawings

[0008] Figure 1 It is a schematic diagram of a needle detector for detecting finished shoe boxes of the present utility model.

[0009] Figure 2 It is a schematic diagram of the upper detection component in a needle detector for detecting finished shoe boxes of the present utility model.

[0010] Figure 3 It is a schematic diagram of the upper detection module in a needle detector for detecting finished shoe boxes of the present utility model.

[0011] Figure 4 It is a schematic diagram of the lower detection component in a needle detector for detecting finished shoe boxes of the present utility model.

[0012] Figure 5 It is a schematic diagram of the lower detection module in a needle detector for detecting finished shoe boxes of the present utility model. Detailed Embodiment

[0013] The present utility model will be further described below in conjunction with embodiments, but the present utility model is not limited to these embodiments. Any similar structure and its similar changes of the present utility model should be included in the protection scope of the present utility model. The use of directions such as up, down, front, back, left, and right in the present utility model is only for the convenience of clear description and does not limit the technical solution of the present utility model.

[0014] Such as Figures 1 - 5As shown in the figure, a needle detector for detecting finished shoe boxes of the present utility model includes an upper detection component 1 and a lower detection component 2. The upper detection component 1 is located above the lower detection component 2. The upper detection component 1 includes an upper detection module 11, and the upper detection module 11 includes a first mounting plate 111. A plurality of permanent magnet assemblies 112 are arranged in a straight line on the first mounting plate 111. Any one of the permanent magnet assemblies 112 includes two permanent magnets 113 arranged vertically. The lower detection component 2 includes a lower detection module 21, and the lower detection module 21 includes a second mounting plate 211. Two rows of parallel coil assemblies 212 are arranged on the second mounting plate 211, and the two rows of coil assemblies 212 are arranged in a staggered manner (in a "pin" shape). Any one row of coil assemblies 212 includes a plurality of coils arranged in a straight line, and an iron core is arranged in any one of the coils.

[0015] Further, the permanent magnet assemblies 112 and the coil assemblies 212 are respectively fixed to the first mounting plate 111 and the second mounting plate 211 by screws.

[0016] Further, there is a stagger with a distance equal to the radius of the coil between the two rows of coil assemblies 212 in the coil arrangement direction.

[0017] Specifically, the permanent magnets 113, the coil assemblies 212, the coils, the iron cores, etc. in this embodiment all adopt well-known solutions in the prior art, and those skilled in the art have already understood them, so they will not be elaborated here.

[0018] The working principle of this embodiment:

[0019] The present utility model is applicable to a needle detector for detecting finished shoe boxes. When in use, the upper detection component 1 and the lower detection component 2 are installed in the needle detector, and the upper detection component 1 and the lower detection component 2 are set as the two poles of the magnetic field, that is, the upper is the N pole (or S pole), and the lower is the S pole (or N pole). After the coil assembly 212 is energized, a magnetic field is generated, forming an overall magnetic field with the permanent magnet assembly 112. When a product with a remaining broken needle passes through the conveyor belt of the needle detector, it causes a change in the local magnetic field environment, and then causes a fluctuation in the instantaneous current in the coil assembly 212. These detected abnormal currents are processed by the microprocessor in the control box of the needle detector and then operation instructions such as alarms are issued.

[0020] The advantages of the present utility model:

[0021] 1. The upper detection component 1 adopts a single row of permanent magnet assemblies 112, using a single row of permanent magnets 113 instead of coils, which reduces the sensitivity and induction. After a large number of tests and measurements, the detection accuracy of each gear drops by 20%, which is suitable for detecting finished shoe boxes with more impurities and reduces the occurrence of false detections.

[0022] 2. The coil components 212 of the lower detection module 21 are arranged in a "pin" shape. In this way, there is no vertical gap between the two rows of coils, and there is no detection blind area, improving the accuracy rate.

Claims

1. A needle detector for detecting finished shoe box, characterized in that, It includes an upper detection component and a lower detection component. The upper detection component is located above the lower detection component. The upper detection component includes an upper detection module. The upper detection module includes a first mounting plate. A number of permanent magnet assemblies are arranged in a straight line on the first mounting plate. Any one of the permanent magnet assemblies includes two permanent magnets arranged vertically. The lower detection component includes a lower detection module. The lower detection module includes a second mounting plate. Two rows of parallel coil assemblies are provided on the second mounting plate. The two rows of coil assemblies are arranged in a staggered manner. Any one row of coil assemblies includes a number of coils arranged in a straight line. An iron core is provided in any one of the coils.

2. The needle detector for detecting the finished shoe box according to claim 1, characterized in that, The permanent magnet assemblies and the coil assemblies are respectively fixed to the first mounting plate and the second mounting plate by screws.

3. The needle detector for detecting the finished shoe box according to claim 1, characterized in that, The two rows of coil assemblies are provided with a stagger in the coil arrangement direction with a distance equal to the radius of the coil.

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