Mould for magnet implantation rubber coating injection molding

Abstract

The utility model discloses a magnet implantation rubber coating injection mold which is characterized in that the bottom end of a non-magnetic steel ejector rod is arranged on an ejector rod fixing plate; a placing space is arranged at the top end of the movable mold core, and a product is placed in the placing space; the top end of the non-magnetic steel ejector rod is installed in the movable mold core, and the magnet is installed at the upper end of the non-magnetic steel ejector rod. A magnet insert is arranged at one end of the product, the magnet insert and the magnet attract each other, and the magnetic poles of the magnet and the magnet insert are opposite; the movable mold insert is installed in the movable mold core, and the other end of the product is arranged on the movable mold insert in a sleeved mode through the iron ring insert. The non-magnetic steel ejector rod in the mold is made of low-magnetic steel such as aluminum alloy which does not generate magnetic induction basically, a magnet insert of a product cannot be influenced, the magnet in the product is prevented from being attracted, and the magnet with the opposite polarity is pre-embedded below the correct polarity according to the principle that like poles repel and opposite poles attract, so that the product is prevented from being damaged. Therefore, the polarity position of the magnet insert on the product can be effectively detected.

Description

Technical Field

[0001] The utility model relates to related technical fields such as molds, and in particular to a mold for magnet implantation and overmolding. Background Art

[0002] At present, for plastic parts embedded with circular magnets, since the circular magnets in the plastic parts have been magnetized, and the N pole and S pole of the circular magnet need to have a certain angle, but the existing molds are usually made of steel, the circular magnets in the plastic parts will be attracted by the steel of the mold, and thus implanted in an incorrect position. In addition, for magnetized magnets, the S pole and N pole cannot be seen by the naked eye, resulting in the circular magnet being implanted in place and not knowing whether the polarity is correct. Utility Model Content

[0003] In view of this, in order to solve the above problems, the purpose of the utility model is to provide a mold for magnet implantation and overmolding, which includes:

[0004] Ejector fixing plate, movable mold core, movable mold insert, non-magnetic steel ejector;

[0005] The bottom end of the non-magnetic steel top rod is mounted on the top rod fixing plate;

[0006] A placement space is provided at the top of the movable mold core, and the product is placed in the placement space;

[0007] The top end of the non-magnetic steel push rod is installed inside the movable mold core, and a magnet is installed on the upper end of the non-magnetic steel push rod;

[0008] A magnet insert is provided at one end of the product, the magnet insert and the magnet are attracted to each other, and the magnetic poles of the magnet and the magnet insert are opposite;

[0009] The movable mold insert is installed inside the movable mold core, and the other end of the product is sleeved on the movable mold insert through an iron ring insert.

[0010] The above-mentioned magnet implantation overmolding mold further includes: a push rod; the bottom end of the push rod is installed on the push rod fixing plate, the top end of the push rod is installed on the movable mold core, and the top end of the push rod is supported on the product.

[0011] In the above-mentioned magnet implantation overmolding mold, the bottom end of the ejector pin is mounted on the ejector pin fixing plate via a first ejector pin hanging platform.

[0012] In the above-mentioned mold for magnet implantation and overmolding, the bottom end of the non-magnetic steel top rod is installed on the top rod fixing plate through a non-magnetic steel top rod hanging platform.

[0013] The above-mentioned magnet implantation overmolding mold further includes: a push rod pad; the push rod fixing plate is installed on the push rod pad, and the bottom end and side wall of the first push rod hanging platform and the bottom end and side wall of the non-magnetic steel push rod hanging platform are respectively installed on the push rod pad and the push rod fixing plate.

[0014] In the above-mentioned magnet implantation overmolding mold, the bottom end of the movable mold insert is installed inside the movable mold core through a second ejector hanger.

[0015] In the above-mentioned magnet implantation overmolding mold, the ejector pin is cylindrical.

[0016] In the above-mentioned mold for magnet implantation and overmolding, the non-magnetic steel push rod is provided with a plane along its longitudinal direction.

[0017] The above-mentioned magnet is embedded in the mold for overmolding, wherein the magnet and the non-magnetic steel push rod are interference fit.

[0018] In the above-mentioned mold for magnet implantation and overmolding, the non-magnetic steel top rod hanging platform is provided with a plane along its longitudinal direction.

[0019] Compared with the prior art, the above technical solution has the following positive effects:

[0020] Through the application of the utility model, a mold for magnet implantation and overmolding is provided. The non-magnetic steel push rod in the mold is made of low-magnetic steel materials such as aluminum alloy that basically does not generate magnetic induction, and will not affect the magnet insert of the product, preventing the magnet in the product from being attracted. In addition, through the principle of like repels like and opposites attract, magnets of opposite polarity are pre-embedded under the correct polarity, so that the polarity of the magnet and the magnet insert of the product are opposite, thereby effectively detecting the polarity position of the magnet insert on the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a schematic diagram of a mold for magnet implantation and overmolding.

[0022] Figure 2 It is a schematic diagram of the product in the utility model.

[0023] Figure 3 It is a schematic diagram of the first push rod hanging platform and the non-magnetic steel push rod hanging platform in the utility model.

[0024] 1. Ejector fixing plate; 2. Moving mold core; 3. Non-magnetic steel ejector; 4. Product; 5. Magnet; 6. Magnet insert; 7. Moving mold insert; 8. Ejector; 9. First ejector hanging platform; 10. Non-magnetic steel ejector hanging platform; 11. Ejector pad; 12. Iron ring insert; 13. Second ejector hanging platform. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations, but they are not intended to limit the present invention.

[0026] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0027] like Figures 1 to 3 As shown, a magnet implantation overmolding mold of a preferred embodiment is shown, which includes: a push rod fixing plate 1, a movable mold core 2, a movable mold insert 7, and a non-magnetic steel push rod 3.

[0028] The bottom end of the non-magnetic steel push rod 3 is installed on the push rod fixing plate 1; a placement space is provided at the top of the movable mold core 2, and the product 4 is placed in the placement space; the top end of the non-magnetic steel push rod 3 is installed inside the movable mold core 2, and a magnet 5 is installed on the upper end of the non-magnetic steel push rod 3; a magnet insert 6 is provided at one end of the product 4, the magnet insert 6 and the magnet 5 are mutually attracted, and the magnetic poles of the magnet 5 and the magnet insert 6 are opposite; the movable mold insert 7 is installed inside the movable mold core 2, and the other end of the product 4 is sleeved on the movable mold insert through the iron ring insert 12.

[0029] In actual use, the non-magnetic steel push rod 3 in the mold is made of low-magnetic steel materials such as aluminum alloy that basically does not generate magnetic induction, and will not affect the magnet insert 6 of the product 4, preventing the magnet in the product 4 from being attracted. And through the principle of like repels like and opposites attract, a magnet 5 of opposite polarity is pre-embedded under the correct polarity, so that the polarity of the magnet 5 is opposite to that of the magnet insert of the product 4, thereby detecting the polarity position of the magnet insert 6 on the product 4.

[0030] The utility model also has the following implementation methods based on the above:

[0031] Further, a mold for magnet implantation and overmolding, wherein the mold further comprises: a push rod 8; the bottom end of the push rod 8 is mounted on the push rod fixing plate 1, the top end of the push rod 8 is mounted on the movable mold core 2, and the top end of the push rod 8 is supported on the product 4. Specifically, the push rod 8 will not affect the magnet insert 6 of the product, so the push rod 8 can be made of ordinary steel.

[0032] Further, a magnet is implanted in a mold for overmolding, wherein the bottom end of the ejector pin 8 is mounted on the ejector pin fixing plate 1 through a first ejector pin hanging platform 9. Specifically, the first ejector pin hanging platform 9 makes the installation of the ejector pin 8 more stable.

[0033] Further, a magnet is embedded in a mold for overmolding, wherein the bottom end of the non-magnetic steel top rod 3 is mounted on the top rod fixing plate 1 through a non-magnetic steel top rod hanging platform 10. Specifically, the non-magnetic steel top rod hanging platform 10 makes the installation of the non-magnetic steel top rod 3 more stable.

[0034] Further, a mold for magnet implantation and overmolding, wherein, it also includes: a push rod pad 11; a push rod fixing plate 1 is installed on the push rod pad 11, and the bottom end and side wall of the first push rod hanging platform 9 and the bottom end and side wall of the non-magnetic steel push rod hanging platform 10 are respectively installed on the push rod pad 11 and the push rod fixing plate 1. Specifically, the push rod pad 11 plays a supporting role.

[0035] Further, a magnet implantation overmolding mold is provided, wherein the bottom end of the movable mold insert 7 is installed inside the movable mold core 2 through the second ejector hanger 13. Specifically, the second ejector hanger 13 makes the installation of the movable mold insert 7 more stable.

[0036] Furthermore, a magnet is implanted in a mold for overmolding, wherein the ejector pin 8 is cylindrical.

[0037] Furthermore, a mold for magnet implantation and overmolding is provided, wherein the non-magnetic steel top rod 3 is provided with a plane along its longitudinal direction.

[0038] Furthermore, a mold for magnet implantation and overmolding is provided, wherein the magnet 5 and the non-magnetic steel push rod 3 are interference fit.

[0039] Further, a mold for magnet implantation and overmolding is provided, wherein a plane is provided along the longitudinal direction of the non-magnetic steel top rod hanging platform 10. Specifically, a plane is provided on the corresponding side of the non-magnetic steel top rod 3 and the non-magnetic steel top rod hanging platform 10, thereby effectively preventing the non-magnetic steel top rod 3 from rotating.

[0040] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A mold for magnet implantation and overmolding, characterized in that: include: Ejector fixing plate, movable mold core, movable mold insert, non-magnetic steel ejector; The bottom end of the non-magnetic steel top rod is mounted on the top rod fixing plate; A placement space is provided at the top of the movable mold core, and the product is placed in the placement space; The top end of the non-magnetic steel push rod is installed inside the movable mold core, and a magnet is installed on the upper end of the non-magnetic steel push rod; A magnet insert is provided at one end of the product, the magnet insert and the magnet are attracted to each other, and the magnetic poles of the magnet and the magnet insert are opposite; The movable mold insert is installed inside the movable mold core, and the other end of the product is sleeved on the movable mold insert through an iron ring insert.

2. A magnet implantation overmolding mold according to claim 1, characterized in that: Also includes: mandrel; The bottom end of the push rod is mounted on the push rod fixing plate, the top end of the push rod is mounted on the movable mold core, and the top end of the push rod is supported on the product.

3. A magnet implantation overmolding mold according to claim 2, characterized in that: The bottom end of the push rod is mounted on the push rod fixing plate through a first push rod hanging platform.

4. A magnet implantation overmolding mold according to claim 3, characterized in that: The bottom end of the non-magnetic steel top rod is installed on the top rod fixing plate through a non-magnetic steel top rod hanging platform.

5. A magnet implantation overmolding mold according to claim 4, characterized in that: Also includes: Ejector pad; The push rod fixing plate is installed on the push rod pad, and the bottom end and side wall of the first push rod hanging platform and the bottom end and side wall of the non-magnetic steel push rod hanging platform are respectively installed on the push rod pad and the push rod fixing plate.

6. A magnet implantation overmolding mold according to claim 1, characterized in that: The bottom end of the movable mold insert is installed inside the movable mold core through a second ejector hanger.

7. A magnet implantation overmolding mold according to claim 2, characterized in that: The top rod is cylindrical.

8. A magnet implantation overmolding mold according to claim 1, characterized in that: The non-magnetic steel top rod is provided with a plane along its longitudinal direction.

9. A magnet implantation overmolding mold according to claim 1, characterized in that: The magnet and the non-magnetic steel push rod are in interference fit.

10. A magnet implantation overmolding mold according to claim 4, characterized in that: The non-magnetic steel top rod hanging platform is provided with a plane along its longitudinal direction.

Images