CN201156469Y - Magnetic product dipole radial mold - Google Patents

Abstract

The utility model relates to a two-pole radial mold for magnetic products, which belongs to the technical field of mold manufacturing. It includes a core, an upper mold, a lower mold, a die coaxial with the core, and a die sleeve around the die. The left magnetic block and the right magnetic block are arranged symmetrically to the diameter of the core. The inner part of the left magnetic block The inner end of the end and the right magnetic block is in contact with the die sleeve, the outer end of the left magnetic block and the outer end of the right magnetic block are respectively in contact with the inner end of the left iron core and the inner end of the right iron core, and the left iron core and the circumference of the right iron core are respectively wound with a left coil and a right coil, and a left pressing block and a right pressing block are respectively arranged at the outer end of the left iron core and the outer end of the right iron core, and the left magnetic conducting block and the right magnetic conducting block The horizontal cross-section is an isosceles trapezoid, and the left magnetic block and the right magnetic block are small at the inner end and large at the outer end. It can effectively prevent product cracking, improve product quality and reduce production cost, and solve the problems in the prior art that products are prone to cracking, affect product quality, and cause high product production cost.

Description

Magnetic product dipole radial mold

technical field

The utility model relates to a two-pole radial mold for magnetic products, which belongs to the technical field of mold manufacturing.

technical background

In the prior art, when producing two-pole radial annular magnetic products, a parallel magnetic field is often used to magnetize the product. As shown in Figure 1, products with such a magnetic field distribution are very easy to form on both sides of the horizontal magnetic field, that is, point P. Stress concentration, the product is prone to severe cracking at this place, which affects the quality of the product and leads to higher production costs.

Contents of the invention

The purpose of the utility model is to provide a two-pole radial mold for magnetic products that can effectively prevent product cracking, improve product quality and reduce production costs, which solves the problem that products in the prior art are prone to cracking, which affects product quality and leads to Higher production costs and other issues.

The above-mentioned technical purpose of the utility model is mainly solved by the following technical solutions: it includes a core, an upper die, a lower die, a die coaxial with the core and a die sleeve on the periphery of the die, the left magnetic block and the right The magnetic block is arranged symmetrically to the diameter of the core, the inner end of the left magnetic block and the inner end of the right magnetic block are in contact with the die sleeve, the outer ends of the left magnetic block and the outer end of the right magnetic block are respectively in contact with the left iron The inner end of the core and the inner end of the right iron core are in contact, the left and right iron cores are respectively wound with a left coil and a right coil, and a left pressing block is respectively arranged at the outer end of the left iron core and the outer end of the right iron core and the right pressure block, the horizontal section of the left magnetic conduction block and the right magnetic conduction block is an isosceles trapezoid, and the left magnetic conduction block and the right magnetic conduction block have a small inner end and a large outer end. The use of a magnetic block with an isosceles trapezoidal horizontal section changes the direction of the magnetic force lines on both sides of the magnetizing magnetic field, making the magnetic force lines on both sides of the magnetizing magnetic field in a curved state, so as to avoid the excessive concentration of stress on both sides of the product, thus effectively reducing the The product cracking phenomenon improves the product quality and reduces the production cost of the product.

Preferably, the included angle between the two sides of the horizontal cross section of the left magnetic permeable block and the right magnetic permeable block is 70°-90°. Reasonable control of the angle between the two sides of the horizontal section of the left and right magnetic permeable blocks can effectively change the direction of the magnetic force lines on both sides of the magnetizing magnetic field to overcome the stress concentration.

Preferably, the centerlines of the horizontal sections of the left and right magnetic permeable blocks coincide with the axes of the left iron core and the right iron core, so that the magnetizing magnetic field can magnetize the product symmetrically.

Preferably, the horizontal width of the outer end surfaces of the left and right magnetic permeable blocks is smaller than the diameters of the left and right iron cores, and the horizontal width of the inner end surfaces of the left and right magnetic permeable blocks is smaller than the inner diameter of the die.

Therefore, the utility model has the characteristics of effectively preventing product cracking, improving product quality and reducing production cost.

Description of drawings

Fig. 1 is a schematic diagram of the magnetic lines of force of a two-pole radial product in the prior art;

Fig. 2 is a kind of structural representation of the utility model;

Fig. 3 is the A-A view of Fig. 2;

Fig. 4 is a schematic diagram of the magnetic force lines of the two-pole radial product produced by the mold of the utility model.

Detailed ways

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Embodiment 1: As shown in Figure 2 and Figure 3, it includes a core 1, an upper mold 2, a lower mold 3, a die 4 coaxial with the core 1, and a die sleeve 5 around the die 4, and the left magnetic The block 6 and the right magnetic block 7 are arranged symmetrically to the diameter of the core 1, the inner end of the left magnetic block 6 and the inner end of the right magnetic block 7 are in contact with the die cover 5, the outer end of the left magnetic block 6 and the right The outer end of the magnetic permeable block 7 contacts with the inner end of the left iron core 8 and the inner end of the right iron core 9 respectively, and the left iron core 8 and the right iron core 9 circumferences are respectively wound with a left coil 10 and a right coil 11. The outer end of the core 8 and the outer end of the right iron core 9 are respectively provided with a left pressing block 12 and a right pressing block 13 . The horizontal section of the left magnetic conduction block 6 and the right magnetic conduction block 7 is an isosceles trapezoid, and the left magnetic conduction block 6 and the right magnetic conduction block 7 are small in the inner end and the outer end is large, and the left magnetic conduction block 6 and the right magnetic conduction block 7 The angle β between the two sides of the horizontal section is 70°, and the center line of the horizontal section of the left magnetic block 6 and the right magnetic block 7 coincides with the axis of the left iron core and the right iron core; the left magnetic block 6 and the right magnetic block The horizontal width of the outer end face of block 7 is slightly less than the diameter of the left and right iron cores, and the horizontal width of the inner end face of the left magnetic conduction block and the right magnetic conduction block is slightly smaller than the inner diameter of the die.

As shown in Figure 4, the direction of the magnetic force lines on both sides of the magnetizing magnetic field is changed by using a magnetic block with an isosceles trapezoidal horizontal section, so that the magnetic force lines on both sides of the magnetizing magnetic field are in a curved state, so as to avoid the formation of excessively concentrated stress on both sides of the product. situation, thereby effectively reducing product cracking, improving product quality, and reducing product production costs.

Claims (4)

1, a kind of magnetic product two utmost point radial dies, comprise fuse, patrix, counterdie, with the coaxial die of fuse and the die case of die periphery, left side magnetic inductive block and right magnetic inductive block are symmetrical in the setting of fuse diameter, the inner of left side magnetic inductive block and the inner of right magnetic inductive block contact with die case, the outer end of outer end of magnetic inductive block, a left side and right magnetic inductive block respectively with the interior end in contact of the inner and right iron core of left iron core, left iron core and right iron core circumference be winding left coil and right coil respectively, be respectively equipped with left briquetting and right briquetting in the outer end of left iron core and the outer end of right iron core, it is characterized in that: the horizontal cross-section of described left magnetic inductive block and right magnetic inductive block is isosceles trapezoid, and it is big that left magnetic inductive block and right magnetic inductive block are inner little outer end.

2, magnetic product two utmost point radial dies according to claim 1, the angle that it is characterized in that the horizontal cross-section dual-side of described left magnetic inductive block and right magnetic inductive block is 70 °-90 °.

3, magnetic product two utmost point radial dies according to claim 1 and 2 is characterized in that the center line of horizontal cross-section of described left magnetic inductive block and right magnetic inductive block and the dead in line of left iron core and right iron core.

4, magnetic product two utmost point radial dies according to claim 1 and 2, it is characterized in that the diameter of the outer face horizontal width of described left magnetic inductive block and right magnetic inductive block less than left and right sides iron core, the inner face horizontal width of left magnetic inductive block and right magnetic inductive block is less than the internal diameter of die.

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