CN208230849U - A kind of molding die of thin wall circular magnet - Google Patents
A kind of molding die of thin wall circular magnet Download PDFInfo
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- CN208230849U CN208230849U CN201820528920.4U CN201820528920U CN208230849U CN 208230849 U CN208230849 U CN 208230849U CN 201820528920 U CN201820528920 U CN 201820528920U CN 208230849 U CN208230849 U CN 208230849U
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- column core
- magnetic conductive
- thin wall
- wall circular
- molding die
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Abstract
The utility model relates to a kind of molding dies of thin wall circular magnet, belong to magnet molding die technical field.It includes two pieces of magnetic conductive boards, two blocks of side plates, seaming chuck, push-down head and column core bolt, a toroidal cavity is formed after two pieces of magnetic conductive boards, two blocks of side plates, seaming chuck, push-down head and the bolt assembly of column core, it further include column core pipe, one end of the column core bolt is fixedly connected with the side of a wherein magnetic conductive board, and the column core pipe is sheathed on column core bolt and is cooperatively connected with its gap.The design of the utility model structure is simple, reasonable, die life is long, at low cost, the thin wall circular magnet concentricity produced by the mold is high, and thickness is uniform, it is produced using the mold, the quality and performance that product not only can be improved, also reduce production technology, substantially increase production efficiency, processing loss is small, and the production that can be used for thin wall circular product is promoted the use of.
Description
Technical field
The utility model relates to a kind of molding die, in particular to a kind of molding die of thin wall circular magnet belongs to magnetic
Forming die technical field.
Background technique
Sintered NdFeB circular ring shape magnet currently on the market generallys use two methods acquisition:
One of which is then to carry out grinding acquisition by solid cylinder sets of holes or drilling.This is also most of enterprise
The method that industry uses, the disadvantage is that processing charges is high, production efficiency is low, magnetic material processing loss is big.
Another kind is direct pressing, such as Chinese patent CN201320315049.7, CN201520156638.4.That is design pressure
The mold of rounding toroidal magnet, when compacting, need point 2-3 times plus a powder, carry out equal static pressure after the completion of compacting again.The disadvantage is that operation
Process is complicated, and production efficiency is low, and the probability that eccentric phenomena occurs in the circular ring shape magnet of production is big, causes post-production loss inclined
Greatly, and it is difficult to realize the compacting of thin-wall circular toroidal magnet.
Utility model content
The utility model and is mentioned to solve the technical problem present on, the especially molding of thin wall circular magnet
For a kind of molding die of thin wall circular magnet.
The technical scheme in the invention for solving the above technical problem is: a kind of molding die of thin wall circular magnet,
Including two pieces of magnetic conductive boards, two blocks of side plates, seaming chuck, push-down head and column core bolt, two pieces of magnetic conductive boards, two blocks of side plates, seaming chuck,
A toroidal cavity is formed after push-down head and column core bolt are assembled, further includes column core pipe, one end of the column core bolt and a wherein magnetic conduction
The side of plate is fixedly connected, and the column core pipe is sheathed on column core bolt and is cooperatively connected with its gap.The technical solution pass through by
Column core bolt is fixed on the wherein side of a magnetic conductive board, can be played the effect that column core bolt is fixed, will not be sent out because of pressing process
It gives birth to movement and the eccentric phenomena of thin wall circular occurs, be more favorable for the compacting production of thin wall circular magnet.Column core pipe is sheathed on column
It is cooperatively connected on core bolt and with its gap, in order to which after formed product completion, column core pipe can take from column core bolt
Under, it is conveniently stripped without injuring product itself.
Further, the medial surface of two magnetic conductive board of the utility model is equipped with the first groove, first recessed by this
Both side plate is stuck between two magnetic conductive boards and forms square cavities by slot.Using this kind of technical solution, so that mould structure is simple, make
Used time passes through assembling.
Further, the utility model further includes bottom plate, and the bottom plate is equipped with the second groove, two pieces of magnetic conductive boards, two pieces
The bottom of side plate and push-down head is placed in second inside grooves.It is designed by bottom plate and its structure, can be effectively controlled two pieces and lead
The bottom of magnetic sheet, two blocks of side plates and push-down head is in the same horizontal position, and position can be moved at work by being also convenient for molding die
It sets.
Further, the seaming chuck of the utility model and push-down head include upper and lower end, the upper end
Certain space interval is all had between the two sides and both side plate in portion, pilot pin, the pilot pin are equipped at the space interval
One end be fixed on magnetic conductive board, the pilot pin is equipped with pilot pin set, two side rolls of the pilot pin set and upper end
Frictional connection；The two sides of the lower end and both side plate clearance fit, semi-circular recesses are located on lower end.Because being thin-wall circular
Ring, so seaming chuck and the gap pushed between both sides of head and magnetic conductive board or side plate cannot be too big, so gap is done it is small,
Will appear mold presses motionless or damage, pilot pin to be fixed on magnetic conductive board, limits the moving direction of seaming chuck and push-down head,
The contact between pressure head and side plate or magnetic conductive board can be effectively prevented, the structure of pilot pin may make push-down head vertically to move
It is dynamic, and horizontal direction is positioned, and guarantees that pressing pressure is evenly distributed, product pressed density uniformity is more preferable.Pilot pin set
Effect is rolling friction, can effectively reduce the replacing construction of pressure head.
Further, one end of the column core bolt of the utility model and the side of a wherein magnetic conductive board are threadably secured
Connection.It is designed by this kind of structure, only thin wall circular need to can be completed by changing the members such as column core bolt or upper push-down head
The change of magnet product size, time saving material-saving.
Further, the column core bolt of the utility model uses aluminum alloy material, and column core pipe uses brass material.Aluminium closes
Golden material is light-weight, brass material toughness with higher and hardness, and aluminium alloy and brass belong to un-conducted magnetic material, extends
Die life, reduce die cost.
Further, the pilot pin of the utility model uses aluminum alloy material, and pilot pin set uses brass material.Aluminium
Alloy material is light-weight, brass material toughness with higher and hardness, and aluminium alloy and brass belong to un-conducted magnetic material, prolong
Die life has been grown, die cost is reduced.
The utility model compared with prior art, has the following advantages that and effect: the design of the utility model structure is simple, closes
Reason, die life is long, at low cost, and the thin wall circular magnet concentricity produced by the mold is high, and thickness is uniform, using the mould
Tool is produced, and the quality and performance of product not only can be improved, also reduce production technology, substantially increase production efficiency,
Processing loss is small, and the production that can be used for thin wall circular product is promoted the use of.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the utility model schematic diagram of internal structure.
Fig. 3 is the column core bolt of the utility model and the assembly structure diagram of column core pipe.
In attached drawing: 11 be the first magnetic conductive board, and 12 be the second magnetic conductive board, and 13 be the first groove, and 2 be side plate, and 3 be bottom plate, 31
It is seaming chuck for the second groove, 4,5 be push-down head, and 6 be column core bolt, and 7 be column core pipe, and 8 be pilot pin, and 9 be pilot pin set.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
The present embodiment includes two pieces of magnetic conductive boards (respectively the first magnetic conductive board 11 and the second magnetic conductive board 12), two pieces of side plates 2, bottoms
Plate 3, seaming chuck 4, push-down head 5, column core bolt 6, column core pipe 7, pilot pin 8 and pilot pin set 9.The medial surface of two magnetic conductive boards is equipped with
First groove 13 is equipped with the second groove 31 on bottom plate 3.
It is as follows using the technique produce of the present embodiment:
Installation mold: column core bolt 6 and pilot pin 8 are installed on to the inside of the first magnetic conductive board 11 by screw thread respectively first
Face, and column core pipe 7 is sheathed on column core bolt 6, then two blocks of side plates 2 are vertically arranged to the first groove of the first magnetic conductive board 11
In 13, and seaming chuck 4 and push-down head 5 are respectively placed on the first magnetic conductive board 11, by both side plate 2, the first magnetic conductive board 11 and
The bottom correspondence of push-down head 5 is installed in the second groove 31 of bottom plate 3, seaming chuck 4, push-down head 5, the first magnetic conductive board 11 and two sides
A unclosed toroidal cavity is collectively formed in plate 2.
Add powder compression moulding: pouring into a certain amount of magnetic powder in the unclosed toroidal cavity in rapid one step up, second is led
Magnetic sheet 12 is installed, and a closed toroidal cavity is formed, and entire mold, which is slightly shaken, is distributed in dispersed-powder inside toroidal cavity,
And the mold is put into press and is pressed, then magnetize orientation.The present embodiment is by the upper end of seaming chuck 4 and push-down head 5
The thickness design in portion is to make to all have between the two sides of end and both side plate 2 thereon certain less than the distance length between both side plate
Space interval, and pilot pin 8 is equipped at space interval, one end of pilot pin 8 is fixed on magnetic conductive board, and pilot pin 8 is equipped with
Pilot pin set 9, pilot pin set 9 are connect with the two sides rolling friction of upper end；The two sides of lower end and 2 clearance fit of both side plate,
Semi-circular recesses are located on lower end；Due to using said structure design, make press during compression moulding, seaming chuck 4
It can only be moved along the vertical direction in pressing process with push-down head 5, effectively prevent directly connecing between the edge of lower end and both side plate 2
Touching, improves the service life of mold, while the lateral surface of thin wall circular can be made uniformly round and smooth, effectively increases later period thin-wall circular
The finishing efficiency of ring.
It takes out magnet green compact and does isostatic pressing, when taking out magnet green compact, since column core pipe 7 is sheathed on column core bolt 6
And be cooperatively connected with its gap, green compact and column core pipe 7 can integrally be taken out, and do isostatic pressing together.The present embodiment is by column
Core bolt 6 and pilot pin 8 use aluminum alloy material, and column core pipe 7 and pilot pin set 9 are used brass material.Aluminum alloy material weight
Gently, brass material toughness with higher and hardness, and aluminium alloy and brass belong to un-conducted magnetic material, extend the mold longevity
Life, reduces die cost.In the prior art, during equal static pressure, because there is encapsulation, hydraulic oil can only be in the outer of blank
Side pressure, medial surface be it is unapproachable, be it is empty, can only lean on the tension of the inner circle of thin wall circular magnet green compact itself come by
Power is easy to cause green compact to be fallen by direct pressure break, due to the bad control of pressure of equal static pressure, the pressure of adaptation can not be transferred to so that
It is not crushed in magnet green compact, while it being allowed to reach further densification again.And the present embodiment is by column core pipe 7 and magnet green compact
Isostatic pressing is done together, and after having column core pipe 7, magnet green compact can play the role of support in inner circle, and pressure is easily controlled, no
It can deform.
Magnetic powder compression moulding, the thin-wall circular toroidal coils concentricity produced are carried out using the mold and technique of the present embodiment
Height, magnet thickness are uniform, and later period finishing is at low cost.
Although the utility model is disclosed as above with embodiment, its protection model being not intended to limit the utility model
It encloses, any technical staff for being familiar with this technology, made change and profit in the conception and scope for not departing from the utility model
Decorations, all should belong to the protection range of the utility model.
Claims (7)
1. a kind of molding die of thin wall circular magnet, including two pieces of magnetic conductive boards, two blocks of side plates, seaming chuck, push-down head and column core
Bolt forms a toroidal cavity after two pieces of magnetic conductive boards, two blocks of side plates, seaming chuck, push-down head and the bolt assembly of column core, and feature exists
In: it further include column core pipe, one end of the column core bolt is fixedly connected with the side of a wherein magnetic conductive board, and the column core pipe is sheathed on
It is cooperatively connected on column core bolt and with its gap.
2. the molding die of thin wall circular magnet according to claim 1, it is characterised in that: the inside of two magnetic conductive board
Face is equipped with the first groove, and both side plate is stuck between two magnetic conductive boards by first groove and forms square cavities.
3. the molding die of thin wall circular magnet according to claim 1, it is characterised in that: it further include bottom plate, the bottom
Plate is equipped with the second groove, and the bottom of two pieces of magnetic conductive boards, two blocks of side plates and push-down head is placed in second inside grooves.
4. the molding die of thin wall circular magnet according to claim 1, it is characterised in that: the seaming chuck and push-down head
Include upper and lower end, certain space interval is all had between the two sides and both side plate of the upper end, in the sky
Between interval be equipped with pilot pin, one end of the pilot pin is fixed on magnetic conductive board, and the pilot pin is equipped with pilot pin set, institute
Pilot pin set is stated to connect with the two sides rolling friction of upper end；The two sides of the lower end and both side plate clearance fit, it is semicircle
Groove is located on lower end.
5. the molding die of thin wall circular magnet according to claim 1, it is characterised in that: one end of the column core bolt with
Wherein the side of a magnetic conductive board is threadably secured connection.
6. the molding die of thin wall circular magnet according to claim 1, it is characterised in that: the column core bolt is closed using aluminium
Golden material, column core pipe use brass material.
7. the molding die of thin wall circular magnet according to claim 4, it is characterised in that: the pilot pin is closed using aluminium
Golden material, pilot pin set use brass material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820528920.4U CN208230849U (en) | 2018-04-15 | 2018-04-15 | A kind of molding die of thin wall circular magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820528920.4U CN208230849U (en) | 2018-04-15 | 2018-04-15 | A kind of molding die of thin wall circular magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208230849U true CN208230849U (en) | 2018-12-14 |
Family
ID=64583382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820528920.4U Active CN208230849U (en) | 2018-04-15 | 2018-04-15 | A kind of molding die of thin wall circular magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208230849U (en) |
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2018
- 2018-04-15 CN CN201820528920.4U patent/CN208230849U/en active Active
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