Mould for preventing mistake of magnetic pole of magnet in magnet bracket

Abstract

The utility model relates to a mold structure. A magnet pole error-proofing mold in a magnet support comprises a mold core and a mold frame, a clamping groove is formed in the mold core, a non-magnetic part is installed in the clamping groove, a support groove and a magnet groove are formed above the non-magnetic part, an error-proofing groove is formed in the non-magnetic part, the error-proofing groove is located below the magnet groove, and the mold frame is located below the support groove. And a mistake-proof magnet with a magnetic pole opposite to that of a magnet to be mounted in the magnet groove is mounted in the mistake-proof groove. The utility model provides a magnet pole mistake-proofing mould in a magnet bracket, which is simple in structure, convenient to install, capable of effectively preventing the magnetic pole from being installed reversely, capable of improving the yield of products and time-saving and labor-saving in installation. The technical problems that in the prior art, although the requirement for magnetic pole installation in a magnet support is met, installation is reversed through manual operation, time and labor are wasted, and therefore product performance is affected are solved.

Description

Technical Field

[0001] The utility model relates to a mold structure, in particular to an error-proof mold to prevent the magnetic poles of magnets in a magnet bracket after molding from being wrong. Background Art

[0002] In the existing automotive field, brackets with magnets are needed in many places, such as sensors or control systems, etc. The magnets in the magnet bracket generally have magnetic pole requirements according to the application occasion or use requirements. When forming the magnet bracket, it is necessary to pay attention to the installation direction of the magnetic pole.

[0003] The common practice now is to mark the surface of the magnet to distinguish the magnetic poles when injecting the magnet bracket, and then rely on manual identification to put the magnet into the insert for injection molding. The problem with this method is that manual identification will inevitably lead to omissions, and it is also necessary to mark the surface of the magnet, which is very troublesome and the installation method is time-consuming and labor-intensive. Summary of the invention

[0004] The utility model provides a magnet pole error-proofing mold in a magnet bracket which has a simple structure, is easy to install, can effectively prevent the magnetic poles from being installed in reverse, improves the yield of products, and saves time and effort in installation; it solves the technical problem in the prior art that although there are requirements for the installation of the magnetic poles in the magnet bracket, manual operation may result in reverse installation, and is time-consuming and labor-intensive, thus affecting product performance.

[0005] The above technical problems of the utility model are solved by the following technical solutions: a magnet pole error-proofing mold in a magnet bracket, including a mold core and a mold frame, a card slot can be provided in the mold core, a non-magnetic part is installed in the card slot, a bracket slot and a magnet slot are provided above the non-magnetic part, an error-proofing slot is provided on the non-magnetic part, the error-proofing slot is located below the magnet slot, and an error-proofing magnet with the opposite magnetic pole to the magnet to be installed in the magnet slot is installed in the error-proofing slot. Because there are magnets on the product to be formed, a non-magnetic part is installed in the mold core, and an error-proofing magnet is installed in the non-magnetic part. By using the principle that like attracts and opposite repels in the magnetic field, the error-proofing magnet and the magnet to be coated have opposite magnetic poles and attract each other. When the magnet to be coated is placed in the magnet slot, if the magnetic pole is placed correctly, it will be attracted to the error-proofing magnet below and safely placed in the magnet slot. If the magnet to be coated is installed upside down, it will not be installed into the magnet slot due to the principle of like poles repelling each other, thus achieving the purpose of error prevention of the dial indicator, ensuring that the magnetic poles of the magnets in the magnet holder after molding are correct, and improving the yield rate of the product.

[0006] Preferably, there are two groups of anti-error grooves, the length direction of the magnet groove is the X direction, the width direction of the magnet groove is the Y direction, the two groups of anti-error grooves are arranged along the X direction, each group of anti-error grooves includes two anti-error grooves, the two anti-error grooves are arranged along the Y direction, and the anti-error magnets in the two anti-error grooves in one group attract each other. The arrangement of the two groups of anti-error magnets only needs to ensure that the same poles attract each other at both ends of the magnet to be coated when the magnet is installed, and the two ends of the magnet to be coated are attracted to install the magnet. Each group of anti-error grooves is equipped with an anti-error magnet on the left and right sides. First, the two anti-error magnets can attract each other to ensure the fixed position of the two anti-error magnets in the same group. Second, it can adapt to the polarity requirements of the magnet to be coated and position the magnet to be coated in the magnet groove.

[0007] Preferably, the bracket groove surrounds the magnet groove, and the bracket groove surrounds the periphery of the magnet groove, so as to facilitate coating the magnet to form a magnet bracket.

[0008] Preferably, a positioning boss is provided below the non-magnetic part, and a positioning groove cooperating with the positioning boss is provided on the mold core. The positioning boss positions the non-magnetic part and determines the position of the non-magnetic part in the mold core. The bottom of the non-magnetic part is flush with the bottom of the mold core, and then the non-magnetic part is fixed in the mold core by a mold frame outside the mold core.

[0009] Preferably, a mounting cavity is provided on the mold frame, the mold core is located in the mounting cavity of the mold frame, and the bottom surface of the mold core matches the bottom of the mounting cavity.

[0010] Preferably, the non-magnetic part is made of non-magnetic steel or beryllium copper material.

[0011] Therefore, the magnet pole misalignment proofing mold in a magnet bracket of the utility model has the following advantages: by designing a non-magnetic part in the mold core, and installing a misalignment proofing magnet with a magnetic pole opposite to that of the magnet to be coated in the non-magnetic part, the accuracy of the magnetic pole installation direction of the magnet to be coated can be ensured, and the yield rate of the magnet bracket after molding can be improved. At the same time, the magnetic poles of the two misalignment proofing magnets in a group in the non-magnetic part are opposite, which can not only ensure the magnetic pole misalignment proofing of the magnet to be coated, but also can position each other, and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a three-dimensional diagram of a magnet pole misalignment prevention mold in a magnet holder, wherein a molded product is shown on one side of the diagram.

[0013] Figure 2 yes Figure 1 Bottom view of the mold.

[0014] Figure 3 yes Figure 1 3D image without magnetic parts inside.

[0015] Figure 4 yes Figure 3 A three-dimensional diagram of a non-magnetic part with the anti-mistake magnet removed in one direction.

[0016] Figure 5 yes Figure 4 A stereogram from another direction. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0018] Example:

[0019] like Figure 1 and 2 As shown, a magnet pole mismatch prevention mold in a magnet bracket includes a rectangular mold frame 2, a mounting cavity is opened in the center of the mold frame 2, and a rectangular mold core 1 is placed in the mounting cavity. The bottom surface of the mold core 1 matches the bottom of the mounting cavity.

[0020] Two rectangular card slots are provided on the mold core 1, and a rectangular non-magnetic part 3 is installed in each card slot. The non-magnetic part 3 is made of non-magnetic steel. A positioning boss 6 protruding outward is integrally formed below the non-magnetic part 3, and a positioning groove 5 cooperating with the positioning boss 6 is provided on the mold core 1. After the non-magnetic part 3 is installed from the bottom of the mold core, the positioning boss 6 cooperates with the positioning groove 5 to determine the position of the non-magnetic part 3 in the mold core, and then the mold core 1 is placed in the installation cavity, and the bottom surface is connected to the bottom surface of the installation cavity, so that the non-magnetic part 3 is fixed in the mold core.

[0021] like Figure 3 and 4As shown in Figure 5, a magnet slot is provided above the non-magnetic part 3, in which the magnet 9 to be coated can be installed, and a bracket slot 10 is formed on the periphery of the magnet slot, which surrounds the outside of the magnet slot, so as to facilitate the injection molding of the magnet bracket. The magnet slot is a long strip slot formed by three mutually parallel U-shaped protrusions 11 formed on the inner wall of the bracket slot and the clamping protrusions at both ends, the length direction of the magnet slot is the X direction, and the width direction of the magnet slot is the Y direction. Two groups of anti-error slots are provided below the magnet slot, and the two groups of anti-error slots are arranged along the X direction. Each group of anti-error slots includes two anti-error slots 8, and the two anti-error slots 8 are arranged along the Y direction. Each anti-error slot 8 is installed with an anti-error magnet 7. The two anti-error slots are not connected, and when the wrong magnet is installed in the anti-error slot, it can be positioned through the bottom of the slot 8. The magnetic poles of the anti-error magnet 7 are opposite to those of the magnet 9 to be coated above, and the magnetic poles of the anti-error magnets in the two anti-error slots in one group are also opposite. For example, if the magnetic pole distribution of the magnet to be coated in the Y direction is N pole on the left and S pole on the right, then the top of the anti-error magnets in the two anti-error slots on the left side of the non-magnetic part in the lower anti-error slot is S pole, and the top of the anti-error magnets in the two anti-error slots on the right side is N pole, so as to attract the magnets of the magnet to be coated, thereby achieving error prevention. The two magnets in the same group in the Y direction can also attract each other for positioning because they are located on the left and right sides with opposite magnetic poles.

[0022] When in use, due to the installation of the anti-mistake magnet 7 in the non-magnetic part 3, the magnet 9 to be coated will not be installed in the non-magnetic part 3 in the wrong direction, and the qualified rate of the product is improved when the integral injection molding is performed to form the magnet bracket 4.

[0023] The specific embodiments described herein are merely examples of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A magnet pole error-proofing mold in a magnet bracket, comprising a mold core and a mold frame, characterized in that: A card slot is provided in the mold core, a non-magnetic part is installed in the card slot, a bracket slot and a magnet slot are provided above the non-magnetic part, an anti-error slot is provided on the non-magnetic part, the anti-error slot is located below the magnet slot, and an anti-error magnet with a magnetic pole opposite to that of the magnet to be installed in the magnet slot is installed in the anti-error slot.

2. The magnet pole mismatch prevention mold in the magnet bracket according to claim 1, characterized in that: There are two groups of anti-error grooves, the length direction of the magnet groove is the X direction, the width direction of the magnet groove is the Y direction, the two groups of anti-error grooves are arranged along the X direction, each group of anti-error grooves includes two anti-error grooves, the two anti-error grooves are arranged along the Y direction, and the anti-error magnets in the two anti-error grooves in one group attract each other.

3. A magnet pole mismatch prevention mold in a magnet bracket according to claim 1 or 2, characterized in that: The bracket groove surrounds the magnet groove, and the bracket groove surrounds the periphery of the magnet groove.

4. A magnet pole mismatch prevention mold in a magnet bracket according to claim 1 or 2, characterized in that: A positioning boss is provided below the non-magnetic part, and a positioning groove matched with the positioning boss is provided on the mold core.

5. The magnet pole mismatch prevention mold in a magnet bracket according to claim 1 or 2, characterized in that: The mold frame is provided with an installation cavity, the mold core is located in the installation cavity of the mold frame, and the bottom surface of the mold core matches the bottom of the installation cavity.

6. A magnet pole mismatch prevention mold in a magnet bracket according to claim 1 or 2, characterized in that: The non-magnetic part is made of non-magnetic steel or beryllium copper material.

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