Linear motor magnet plate detection module and detection device

Abstract

The utility model discloses a linear motor magnet board detection module and a detection device, the linear motor magnet board detection module comprises a PCB detection board and a detection circuit arranged on the PCB detection board, the detection circuit comprises a detection chip, a logic unit and an indication unit; the detection chip is used for carrying out magnetic pole detection and generating an electric signal, the logic unit is connected with the detection chip, the logic unit is used for carrying out logic operation on the electric signal to generate a level signal, the indication unit is connected with the logic unit, and the indication unit is used for generating an indication signal based on the level signal. According to the utility model, the PCB detection board is arranged to detect all magnets on the magnet board, so that whether the installation sequence of all magnets is wrong can be rapidly detected at one time, and the production efficiency is prevented from being reduced due to reworking during the subsequent assembly of the linear motor.

Description

Technical Field

[0001] The utility model belongs to the technical field of linear motors, and in particular relates to a linear motor magnet plate detection module and a detection device. Background Art

[0002] The magnet plate is an important component of the linear motor, mainly used to install permanent magnets. A magnet plate consists of multiple permanent magnets with NS poles arranged at intervals; Figure 1 As shown, there is a dot at the lower left corner of the magnet plate to mark the permanent magnet at that position as the S pole; the permanent magnets must be installed in the order of SNSN...N. When the pole arrangement order is wrong, it will cause uneven magnetic field distribution, thus affecting the efficiency and performance of the motor; long-term operation will cause damage to the mechanical and electronic components of the motor, thus affecting the life of the motor.

[0003] Therefore, in view of the above technical problems, it is necessary to provide a linear motor magnet plate detection device.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a linear motor magnet plate detection module, which can quickly detect whether the installation sequence of magnetic poles on the linear motor magnet plate is correct.

[0006] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a linear motor magnet plate detection module, including a PCB detection board and a detection circuit arranged on the PCB detection board, the detection circuit includes a detection chip, a logic unit and an indication unit; the detection chip is used to perform magnetic pole detection and generate an electrical signal, the logic unit is connected to the detection chip, the logic unit is used to perform logical operations on the electrical signal to generate a level signal, the indication unit is connected to the logic unit, and the indication unit is used to generate an indication signal based on the level signal.

[0007] In one or more embodiments of the present utility model, the logic unit includes a first NOT gate and a second NOT gate; the input end of the first NOT gate is connected to the output end of the detection chip, the first NOT gate is used to perform a logic operation on the electrical signal to generate a first level signal, the input end of the second NOT gate is connected to the output end of the first NOT gate, and the second NOT gate is used to perform a logic operation on the first level signal to generate a second level signal.

[0008] In one or more embodiments of the present utility model, the indication unit includes a first signal light and a second signal light, the logic unit is used to perform a logical operation on the electrical signal to generate a first level signal and a second level signal that are opposite to each other, the first signal light is used to receive a first level signal to generate a first indication signal; the second signal light is used to receive a second level signal to generate a second indication signal.

[0009] In one or more embodiments of the present invention, the detection circuit is provided with multiple detection circuits for respectively detecting the S magnetic pole and the N magnetic pole, wherein the detection circuit for detecting the S magnetic pole is the first detection circuit, and the detection circuit for detecting the N magnetic pole is the second detection circuit, the first detection circuit and the second detection circuit are alternately arranged in a first direction, and the detection chip in the first detection circuit and the detection chip in the second detection circuit are respectively arranged on the first side and the second side of the corresponding PCB detection board.

[0010] In one or more embodiments of the utility model, the PCB detection board and the detection circuit are provided in plurality, each of the PCB detection boards is provided with a first detection circuit or a second detection circuit, or each of the PCB detection boards is provided with at least one first detection circuit and at least one second detection circuit.

[0011] In one or more embodiments of the present invention, the PCB detection boards are electrically connected via terminals.

[0012] In one or more embodiments of the present invention, at least two groups of the detection circuits are arranged along the second direction, and the first detection circuits and the second detection circuits in each group of the detection circuits are arranged in opposite ways.

[0013] In one or more embodiments of the present invention, the detection chip is a Hall chip, and the Hall chip is a unipolar S-pole Hall chip.

[0014] The utility model also provides a linear motor magnet plate detection device, including a detection frame and the above-mentioned detection module installed on the detection frame, the detection frame is provided with a limit groove for positioning the PCB detection board, and the limit groove is provided with a positioning hole for positioning the PCB detection board and the magnet plate.

[0015] In one or more embodiments of the present invention, the PCB detection board is provided with a limiting hole for locating the identification point of the S pole or the N pole on the magnetic plate.

[0016] Compared with the prior art, the PCB detection board and detection circuit in the embodiment of the utility model can detect all magnets on the magnetic plate, and quickly detect whether the installation order of all magnets is incorrect at one time, thereby avoiding reduced production efficiency due to rework during subsequent assembly of the linear motor; the entire detection device has a simple structure and can be applied to various types of magnetic plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of a detection module according to an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a detection circuit in one embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a linear motor magnet plate in the prior art;

[0021] Figure 4 It is a schematic diagram of the structure of a single-layer magnetic plate in the prior art;

[0022] Figure 5 It is a structural schematic diagram of a double-layer magnetic plate in the prior art;

[0023] Figure 6 This is a structural schematic diagram of a PCB detection board in an embodiment of the utility model;

[0024] Figure 7 This is a structural schematic diagram of a PCB detection board in an embodiment of the utility model;

[0025] Figure 8 This is a structural schematic diagram of a PCB detection board in an embodiment of the utility model;

[0026] Fig. 9 This is a schematic diagram of the structure of a detection device in another embodiment of the utility model;

[0027] Fig.10 It is a structural schematic diagram of a detection frame in another embodiment of the utility model. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] like Figure 1 As shown, the linear motor magnet plate detection module in one embodiment of the utility model includes a PCB detection board 1 and a detection circuit 2 arranged on the PCB detection board 1.

[0030] In another embodiment, if Figure 2 As shown, the detection circuit 2 includes a detection chip 21, a logic unit 22 and an indication unit 23; the detection chip 21 is used to perform magnetic pole detection and generate an electrical signal, the logic unit 22 is connected to the detection chip 21, the logic unit 22 is used to perform logical operations on the electrical signal to generate a level signal, the indication unit 23 is connected to the logic unit 22, and the indication unit 23 is used to generate an indication signal based on the level signal; in this embodiment, the detection chip 21 is a Hall chip, the Hall chip is a unipolar S-pole Hall chip, the logic unit 22 is composed of logic gates, and the indication unit 23 is a signal light with an indication function.

[0031] In another embodiment, the logic unit 22 includes a first NOT gate 221 and a second NOT gate 222; the input end of the first NOT gate 221 is connected to the output end of the detection chip 21, and the first NOT gate 221 is used to perform a logic operation on the electrical signal to generate a first level signal, and the input end of the second NOT gate 222 is connected to the output end of the first NOT gate 221, and the second NOT gate 222 is used to perform a logic operation on the first level signal to generate a second level signal.

[0032] In another embodiment, the indicating unit 23 includes a first signal light 231 and a second signal light 232. The logic unit 22 is used to perform a logic operation on the electrical signal to generate a first level signal and a second level signal that are opposite to each other. The first signal light 221 is used to receive the first level signal to generate a first indicating signal; the second signal light 222 is used to receive the second level signal to generate a second indicating signal. In this embodiment, the first signal light 221 is a red light, and the second signal light 222 is a green light.

[0033] In another embodiment, the detection circuit 2 is provided with multiple detection circuits for respectively detecting the S magnetic pole 31 and the N magnetic pole 32, wherein the detection circuit 2 for detecting the S magnetic pole 31 is a first detection circuit 24, and the detection circuit 2 for detecting the N magnetic pole 32 is a second detection circuit 25, the first detection circuit 24 and the second detection circuit 25 are alternately arranged in a first direction, and the detection chip 21 in the first detection circuit 24 and the detection chip 21 in the second detection circuit 25 are respectively arranged on the first side 11 and the second side 12 of the corresponding PCB detection board 1.

[0034] The detection circuit 2 is used to detect the polarity of the magnetic poles on the magnetic plate 3. Under normal circumstances, the arrangement order of the magnetic poles on the magnetic plate 3 is to start from the S magnetic pole 31 and then to the N magnetic pole 32 and alternately arrange them. Therefore, in this embodiment, the detection circuit 2 is provided with a plurality of detection circuits to detect the S magnetic pole 31 and the N magnetic pole 32 respectively. When the detection chip 21 is installed on the first side 11, the S magnetic pole 31 faces the front of the detection chip 21, the detection chip 21 has a signal output, the second signal light 222 is on, and the first signal light 221 is off; similarly, when the detection chip 21 is installed on the second side 12, the N magnetic pole 32 faces the back of the detection chip 21, the detection chip 21 has a signal output, the second signal light 222 is on, and the first signal light 221 is off. That is, if the green lights on all the detection circuits 2 are on, it means that the installation positions of all the magnetic poles are correct.

[0035] In another embodiment, multiple PCB detection boards 1 and detection circuits 2 are provided, and each PCB detection board 1 is provided with a first detection circuit 24 or a second detection circuit 25, or each PCB detection board 1 is provided with at least one first detection circuit 24 and at least one second detection circuit 25.

[0036] In this embodiment, if Figure 6 As shown, the detection board 1 is a first detection board 151. A detection circuit 2 is provided on the first detection board 151 for detecting the S pole 31 or the N pole 32 on the magnetic plate 3. According to actual use needs, multiple first detection boards 151 can be used to be electrically connected through the terminal 14 to realize the detection of the magnetic plate 3 with multiple magnetic poles.

[0037] In this embodiment, if Figure 7As shown, in order to detect the double-layer magnetic plate 35, the PCB detection board 1 is provided with two, including a second PCB detection board 152 and a third detection board 153. The second PCB detection board 152 and the third detection board 153 are electrically connected through the terminal 14 to adapt to the arrangement of the multi-layer magnetic plate 35, wherein the second PCB detection board 152 and the third detection board 153 are in opposite directions relative to the multi-layer magnetic plate 35. In this embodiment, the second PCB detection board 152 and the third detection board 153 are substantially the same two detection boards, except that the first side surface 11 of the second PCB detection board 152 is arranged opposite to the magnetic pole during splicing installation, and the second side surface 12 of the third detection board 153 is arranged opposite to the magnetic pole; due to the different installation directions of the second PCB detection board 152 and the third detection board 153, the first detection circuit 24 and the second detection circuit 25 are alternately arranged on the second PCB detection board, and the arrangement of the original circuit on the third detection board 153 is reversed, that is, the second detection circuit 25 and the first detection circuit 24 are alternately arranged.

[0038] In this embodiment, if Figure 8 As shown, the PCB detection board 1 is a fourth PCB detection board 154 provided with multiple groups of detection circuits 2. The detection circuits 2 on the fourth PCB detection board 154 are provided with at least two groups along the second direction, and the arrangement of the first detection circuit 24 and the second detection circuit 25 in each group of detection circuits 2 is opposite.

[0039] In other embodiments, Fig. 9 As shown, a linear motor magnet plate detection device is also disclosed, including a detection frame 4 and a detection module installed on the detection frame 4.

[0040] In this embodiment, if Fig.10 As shown, a limiting groove 41 for positioning the PCB detection board 1 is provided in the middle position of the detection frame 4, and a positioning hole 42 is provided in the limiting groove 41. In a further embodiment, a limiting hole 13 for positioning the identification point 33 of the S magnetic pole 31 on the magnetic plate 3 is provided on the PCB detection board 1; when the PCB detection board 1 is set in the limiting groove 41, the positioning hole 42, the limiting hole 14 and the identification point 13 on the magnetic plate 3 are in the same direction, so that the detection circuit 2 on the PCB detection board 1 is aligned with the magnetic pole position on the magnetic plate 3.

[0041] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A linear motor magnet plate detection module, characterized in that: It comprises a PCB detection board and a detection circuit arranged on the PCB detection board, wherein the detection circuit comprises a detection chip, a logic unit and an indication unit; the detection chip is used for performing magnetic pole detection and generating an electrical signal, the logic unit is connected to the detection chip, the logic unit is used for performing a logic operation on the electrical signal to generate a level signal, the indication unit is connected to the logic unit, and the indication unit is used for generating an indication signal based on the level signal.

2. The linear motor magnet plate detection module according to claim 1, characterized in that: The logic unit includes a first NOT gate and a second NOT gate; the input end of the first NOT gate is connected to the output end of the detection chip, the first NOT gate is used to perform a logic operation on the electrical signal to generate a first level signal, the input end of the second NOT gate is connected to the output end of the first NOT gate, and the second NOT gate is used to perform a logic operation on the first level signal to generate a second level signal.

3. The linear motor magnet plate detection module according to claim 1, characterized in that: The indication unit includes a first signal lamp and a second signal lamp, the logic unit is used to perform a logic operation on the electrical signal to generate a first level signal and a second level signal which are opposite to each other, and the first signal lamp is used to receive the first level signal to generate a first indication signal; The second signal lamp is used for receiving a second level signal to generate a second indication signal.

4. The linear motor magnet plate detection module according to claim 1, characterized in that: The detection circuit is provided with multiple detection circuits for detecting the S magnetic pole and the N magnetic pole respectively, wherein the detection circuit for detecting the S magnetic pole is the first detection circuit, and the detection circuit for detecting the N magnetic pole is the second detection circuit, the first detection circuit and the second detection circuit are alternately arranged in a first direction, and the detection chip in the first detection circuit and the detection chip in the second detection circuit are respectively arranged on the first side and the second side of the corresponding PCB detection board.

5. The linear motor magnet plate detection module according to claim 4, characterized in that: There are multiple PCB detection boards and detection circuits, each of which is provided with a first detection circuit or a second detection circuit, or each of which is provided with at least one first detection circuit and at least one second detection circuit.

6. The linear motor magnet plate detection module according to claim 5, characterized in that: The PCB detection boards are electrically connected via terminals.

7. The linear motor magnet plate detection module according to claim 4 or 5, characterized in that: At least two groups of the detection circuits are arranged along the second direction, and the first detection circuits and the second detection circuits in each group of the detection circuits are arranged in opposite ways.

8. The linear motor magnet plate detection module according to claim 1, characterized in that: The detection chip is a Hall chip, and the Hall chip is a unipolar S-pole Hall chip.

9. A linear motor magnet plate detection device, characterized in that: It comprises a detection frame and a detection module as claimed in any one of claims 1 to 8 installed on the detection frame, wherein the detection frame is provided with a limiting groove for positioning the PCB detection board, and the limiting groove is provided with a positioning hole for positioning the PCB detection board and the magnetic plate.

10. The linear motor magnet plate detection device according to claim 9, characterized in that: The PCB detection board is provided with a limiting hole for locating the marking point of the S magnetic pole or the N magnetic pole on the magnetic plate.

Images