CN109551614A - A kind of ultrasonic unit for powder pressing forming - Google Patents

A kind of ultrasonic unit for powder pressing forming Download PDF

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Publication number
CN109551614A
CN109551614A CN201811182200.8A CN201811182200A CN109551614A CN 109551614 A CN109551614 A CN 109551614A CN 201811182200 A CN201811182200 A CN 201811182200A CN 109551614 A CN109551614 A CN 109551614A
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China
Prior art keywords
ultrasonic
die
vibration generator
ultrasonic vibration
cavity plate
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CN201811182200.8A
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CN109551614B (en
Inventor
赵夙
翟锰钢
张庆龙
徐洪涛
于磊
周瑜婷
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Ningbo Institute of Material Technology and Engineering of CAS
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Ningbo Institute of Material Technology and Engineering of CAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/022—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form combined with vibrating or jolting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/04—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Powder Metallurgy (AREA)

Abstract

The present invention relates to a kind of ultrasonic units for powder pressing forming, including die holder, the cavity plate on the die holder, and the punch-pin of the relatively described cavity plate setting, and the punch-pin and the cavity plate cooperate, and the chamber as powder compacting is collectively formed；It is characterized by: being provided at least one ultrasonic vibration generator in the die holder, the vibration output section of the ultrasonic vibration generator is arranged towards the cavity plate, at least one ram is wherein provided between the cavity plate and the vibration output section of the ultrasonic vibration generator, and the ultrasonic vibration generator can drive the ram to hit to the cavity plate.The present invention drives ram to hit cavity plate with ultrasonic vibration generator, so that the ultrasonic unit is produced big to the vibrational energy of dusty material when working, and frequency is high, so that it is high via the product compactness obtained after the ultrasonic unit compression moulding, and there is good mechanical property.

Description

A kind of ultrasonic unit for powder pressing forming
Technical field
The invention belongs to powder to suppress relevant technical field, more particularly to a kind of ultrasound for powder pressing forming Wave apparatus.
Background technique
Powder pressing forming is for being made loose powder with prespecified geometric, size, density and intensity Semifinished or finished goods.
Wherein, ceramic powders forming technique is mixed with forming agent using Zirconium oxide powder, Zirconium powder as raw material, warp It crosses dry-pressing formed, sintering process to be fabricated, such technique mainly produces the flat pattern ceramic system of light-type, high rigidity Product, high production efficiency are suitble to mass production, and at low cost, stock utilization is high, and shear resistant is good.
Currently, ceramic compression moulding, particular by under the static pressure of press machine and mold, powder is pressed in 15-600MPa Under power, it is pressed into required shape, since zirconia material material is firmly crisp, there is irregular corner angle, static pressure effects on microcosmic After lower compression moulding, there can be many gaps between particle, will form stomata, cause the compactness of material after forming low, it can shadow Ring mechanical property such as hardness, intensity, wearability, high temperature resistant, the corrosion resistance for arriving ceramic panel.
Specifically, the powder pressing forming device as disclosed in Chinese patent (application number: 2017107076452), has Body disclose using disengaging gas air-flow generate vibration drive film layer shake, mixed with powder, at the same by powder gap into Row filling.
However, above-mentioned powder pressing forming device is at work, and since the energy generated using film vibration is low, frequency Small, spread scope is limited, can only cause the light exercise close to film surface material, be insufficient to allow entire construction material closely knit, from And influence whether the mechanical property of product after compression moulding；Moreover, this effect is just without solution is not pressed after the pressurizing Powder arranges mixed and disorderly problem during system.
Summary of the invention
Based on this, it is necessary to for the technical problems in the prior art, provide a kind of for powder pressing forming Ultrasonic unit.
Specifically, a kind of ultrasonic unit for powder pressing forming, including die holder, it is recessed on the die holder Mould, and the punch-pin of the relatively described cavity plate setting, the punch-pin and the cavity plate cooperate, and have been collectively formed and have suppressed as powder Chamber；It is characterized by: at least one ultrasonic vibration generator is provided in the die holder, the ultrasonic vibration generator Vibration output section is arranged towards the cavity plate, wherein setting between the cavity plate and the vibration output section of the ultrasonic vibration generator It is equipped at least one ram, and the ultrasonic vibration generator can drive the ram to hit to the cavity plate It hits.
As a preferred solution of the present invention, the ultrasonic vibration generator includes ultrasonic transducer, and is set to described super Amplitude transformer on acoustic wave transducer；One end of the amplitude transformer is fixedly connected with the ultrasonic transducer, and other end is to institute State cavity plate setting, and the ram is placed on the amplitude transformer towards on a side end face of the cavity plate, and with the cavity plate It contacts.
As a preferred solution of the present invention, the ultrasonic vibration generator further includes guide sleeve, and the guide sleeve is socketed in In the amplitude transformer, and slided relative to the amplitude transformer.
As a preferred solution of the present invention, the ultrasonic vibration generator further includes elastic supporting member for supporting optical member, for described super Acoustic wave transducer is supported, and the elastic supporting member for supporting optical member can carry out flexible adjustment to the support of the ultrasonic transducer.
As a preferred solution of the present invention, the elastic supporting member for supporting optical member is spring, and the both ends of the spring surpass with described respectively Acoustic wave transducer and the die holder only support.
As a preferred solution of the present invention, the ram is steel ball, is provided between the amplitude transformer and the cavity plate More steel balls.
As a preferred solution of the present invention, the amplitude transformer is fixed with sheath, and more in one end towards the cavity plate The steel ball setting contacts on the sheath, and with the cavity plate.
As a preferred solution of the present invention, the ultrasonic unit further comprises cooling system, for the ultrasound Vibration machine cools down.
As a preferred solution of the present invention, the cooling system includes gas-tpe fitting, and the gas-tpe fitting is arranged described On the die holder cover board of die holder, for importing cold air in the die holder, and the cold air can occur by way of the ultrasonic vibration Device, and the fit-up gap between the cavity plate and the die holder discharges.
As a preferred solution of the present invention, multiple ultrasonic vibration generators are provided in the die holder.
Due to the application of the above technical scheme, compared with the prior art, the invention has the following advantages:
Ultrasonic unit provided by the present invention for powder pressing forming is used during powder pressing forming Ultrasonic vibration generator driving ram hits cavity plate, so that the ultrasonic unit is produced to dusty material when working Vibrational energy it is big, and frequency is high so that high via the product compactness obtained after the ultrasonic unit compression moulding, and With good mechanical property.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the ultrasonic unit provided by the present invention for powder pressing forming.
Fig. 2 is the structural schematic diagram of cavity plate in the present invention.
Wherein, 10, die holder；11, intermediate die；12, pilot hole；13, die holder cover board；14, pillar；20, cavity plate；21, water conservancy diversion Slot；30, punch-pin；40, ultrasonic vibration generator；41, ultrasonic transducer；42, amplitude transformer；43, elastic supporting member for supporting optical member；44, stud； 45, guide sleeve；50, ram；61, gas-tpe fitting；230, chamber；421, sheath.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " it include one or more phases Any and all combinations of the listed item of pass.
The claimed ultrasonic unit for powder pressing forming of the present invention, for the process in powder pressing forming Middle addition ultrasonic vibration is vibrated low frequency impact and high frequency ultrasound and is transmitted in each powder, so that powder filling wedge angle generates Gap in, adaptive aligned position entanglement, so as to improve the ultrasonic unit to product after dusty material compression moulding Compactness.
Referring to Fig. 1, the ultrasonic unit provided by the present invention for powder pressing forming, including die holder 10, it is set to Cavity plate 20 on the die holder 10, the punch-pin 30 that the relatively described cavity plate 20 is arranged, and for occurring in the die holder 10 The ultrasonic vibration generator 40 of ultrasonic vibration.Wherein, the cavity plate 20 cooperates with the punch-pin 30, and has been collectively formed as powder The chamber 230 of end compacting.The vibration output section of the ultrasonic vibration generator 40 is arranged towards the cavity plate 20, and the two it Between at least one ram 50 is set, enable ultrasonic vibration generator 40 drive the ram 50 to the cavity plate 20 into Row is hit.
The die holder 10 is the supporting structure of the ultrasonic unit, for being supported to cavity plate 20 placed on it, So that punch-pin 30 is driven pushing by press machine and is cooperated with the cavity plate 20.
In the present embodiment, the die holder 10 includes intermediate die 11, and the intermediate die 11 is arranged in the die holder 10 and institute It states between cavity plate 20, and is fixedly connected respectively with the die holder 10 and the groove 20, specifically available straight pin 101 and screw 102 are respectively fixedly connected intermediate die 11 and die holder 10 and intermediate die 11 and cavity plate 20, guarantee die holder 10 in this Between assembly precision between mould 11 and intermediate die 11 and cavity plate 20.Wherein, distinguish in the die holder 10 and the intermediate die 11 Pilot hole 12 is offered, for assembling to the ultrasonic vibration generator 40.
It is appreciated that the die holder 10 of the present embodiment and the split type structure setting of intermediate die 11, have been convenient for die holder 10 in life Opening up to the pilot hole 12 for assembling ultrasonic vibration generator 40 when producing preparation, that is to say, that be convenient for the die holder 10 Production preparation.
The ultrasonic vibration generator 40 drives the ram 50 for generating ultrasonic vibration in a manner of ultrasonic vibration The cavity plate 20 is hit.In the present embodiment, multiple ultrasonic vibration generators 40 are provided in the die holder 10, specifically The number of ultrasonic vibration generator 40 can be set according to the demand of pressed powder required for chamber 230 between cavity plate 20 and punch-pin 30 Amount.
Specifically, the ultrasonic vibration generator 40 includes ultrasonic transducer 41, is set to the ultrasonic transducer 41 On amplitude transformer 42 and elastic supporting member for supporting optical member 43；One end of the amplitude transformer 42 is fixedly connected with the ultrasonic transducer 41, Specifically available stud 44 is fixedly connected；The other end of the amplitude transformer 42 is arranged to the groove 20, and the shock Part 50 is placed on a side end face of the amplitude transformer 42 towards the cavity plate 20, and is contacted with the cavity plate 20.Also It is to say, the side end face towards the cavity plate 20 in the amplitude transformer 42 of the present embodiment is on the ultrasonic vibration generator 40 Vibrate output section.And the ultrasonic vibration generator 40 is at work, the energy converter 41 can generate ultrasound after powering on High-frequency vibration, produced high-frequency vibration amplifies when amplitude transformer 42 again works energy converter 41, and ultrasonic energy is concentrated on The ram 50 being placed in the amplitude transformer 42 carries out the driving of high-frequency vibration.
The elastic supporting member for supporting optical member 43 is for being supported the ultrasonic transducer 41, and 43 energy of the elastic supporting member for supporting optical member Enough supports to the ultrasonic transducer 41 carry out flexible adjustment, enable the elastic supporting member for supporting optical member 43 to the ultrasonic wave Generated vibration offer reaction force when working of energy converter 41, in order to which ultrasonic transducer 41 passes through 42 pairs of amplitude transformer shocks The driving of the progress high-frequency vibration of part 50.
Specifically, the elastic supporting member for supporting optical member 43 be spring, the both ends of the spring respectively with the ultrasonic transducer 41 It is only supported with the die holder 10.Wherein the spring is preferably compressed spring.Further, the both ends of the spring are socketed in respectively The ultrasonic transducer 41, to limit to the spring, is prevented on the pillar 14 of the 10 upper die holder cover board 13 of die holder It is deviated when only spring provides the reaction force that ultrasonic transducer 41 vibrates.
In the present embodiment, the ultrasonic vibration generator 40 further includes guide sleeve 45, and the guide sleeve 45 is socketed in institute It states in amplitude transformer 42, and is slidably connected relative to the amplitude transformer 42.To play limit to amplitude transformer 42 with the guide sleeve 45 With the effect of guiding.Wherein the guide sleeve 45 is arranged in the pilot hole 12 of the die holder 10, and between the pilot hole 12 Gap cooperation, is up and down reciprocatingly slided so that guide sleeve 45 is able to carry out in the die holder 10.
The ram 50 by the amplitude transformer 42 driving for hitting cavity plate 20, with to being placed in the cavity plate 20 and institute It states the powder between punch-pin 30 in chamber 230 and carries out vibratory drive.
In the present embodiment, the ram 50 is steel ball, and is set between each amplitude transformer 42 and the cavity plate 20 It is equipped with more steel balls, it is preferable that be provided with two steel balls between each amplitude transformer 42 and the cavity plate 20.
It is appreciated that the present embodiment is the structure setting of ram 50 by steel ball, solves ultrasonic vibration heavy high The conducting problem of energy in laminated structure part, so that the high-frequency vibration of amplitude transformer 42, when being conducted to cavity plate 20 through steel ball, becomes steel Ball is transmitted to cavity plate 20 and is placed in cavity plate 20 and punch-pin 30 to the low frequency impact of cavity plate 20 and the compound motion of high-frequency vibration Between powder in chamber 230 vibration be also low frequency impact and high-frequency vibration compound motion so that vibration distribution is more equal It is even, and function and effect are more preferable.
Further, the amplitude transformer 42 is fixed with sheath 421, and the more steel in one end towards the cavity plate 20 Ball setting contacts on the sheath 421, and with the cavity plate 20.So that amplitude transformer 42 carries out high-frequency vibration drive to steel ball It when dynamic, directly contacted especially by sheath 421 with steel ball, protection is played the role of to amplitude transformer 42 with this, had and prolong The effect of long 42 service life of amplitude transformer.
As a preferred solution of the present invention, ultrasonic unit of the invention further includes cooling system, for the ultrasound Vibration machine 40 cools down, and is particularly used for carrying out the ultrasonic transducer 41 on ultrasonic vibration generator 40 cold But cool down.
Specifically, the cooling system includes gas-tpe fitting 61, and the mould of the die holder 10 is arranged in the gas-tpe fitting 61 On flap plate 13, for toward importing cold air in the die holder 10, and the cold air can by way of the ultrasonic vibration generator 40, And discharged from the fit-up gap between the cavity plate 20 and the die holder 10, it is realized with this to ultrasonic vibration generator 40 It cools.That is, when the ultrasonic vibration generator 40 is assemblied in the pilot hole 12 of the die holder 10, with the mould There are certain intervals between the pilot hole 12 of seat 10, for use as the flow channel of cold air.Referring to Fig. 2, the cavity plate 20 is in face Multiple diversion trenches 21 are offered, on a side end face of the die holder 10 for use as the channel of cold air outflow.
To sum up, the ultrasonic unit provided by the present invention for powder pressing forming, in the process of powder pressing forming In, cavity plate is hit with ultrasonic vibration generator driving ram, so that the ultrasonic unit is produced to powder when working The vibrational energy of powder material is big, and frequency is high, so that closely knit via the product obtained after the ultrasonic unit compression moulding Degree is high, and has good mechanical property.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims (10)

1.一种用于粉末压制成型的超声波装置，包括模座，设于所述模座上的凹模，以及相对所述凹模设置的凸模，所述凸模与所述凹模配合，且共同形成有用作粉末压制的腔室；其特征在于：所述模座内设置有至少一个超声振动发生器，所述超声振动发生器的振动输出部面向所述凹模设置，其中所述凹模与所述超声振动发生器的振动输出部之间设置有至少一个撞击件，且所述超声振动发生器能够驱动所述撞击件来对所述凹模进行撞击。1. An ultrasonic device for powder compaction, comprising a die base, a concave die arranged on the die base, and a punch set relative to the concave die, the convex die being matched with the concave die, And together form a chamber for powder pressing; it is characterized in that: at least one ultrasonic vibration generator is arranged in the mold base, and the vibration output part of the ultrasonic vibration generator is arranged facing the concave mold, wherein the concave At least one striker is disposed between the die and the vibration output part of the ultrasonic vibration generator, and the ultrasonic vibration generator can drive the striker to strike the die. 2.根据权利要求1所述的用于粉末压制成型的超声波装置，其特征在于：所述超声振动发生器包括超声波换能器，及设于所述超声波换能器上的变幅杆；所述变幅杆的一端与所述超声波换能器固定连接，另一端面向所述凹模设置，且所述撞击件放置在所述变幅杆面向所述凹模的一侧端面上，并与所述凹模抵接配合。2. The ultrasonic device for powder compression molding according to claim 1, characterized in that: the ultrasonic vibration generator comprises an ultrasonic transducer, and a horn arranged on the ultrasonic transducer; One end of the horn is fixedly connected to the ultrasonic transducer, the other end faces the die, and the impact piece is placed on the end face of the horn facing the die, and is connected with the die. The die is abutted and fitted. 3.根据权利要求2所述的用于粉末压制成型的超声波装置，其特征在于：所述超声振动发生器还包括导向套，所述导向套套接在所述变幅杆上，并能够相对于所述变幅杆滑动。3. The ultrasonic device for powder compression molding according to claim 2, wherein the ultrasonic vibration generator further comprises a guide sleeve, the guide sleeve is sleeved on the horn, and can be relative to the horn. The horn slides. 4.根据权利要求2所述的用于粉末压制成型的超声波装置，其特征在于：所述超声振动发生器还包括弹性支撑件，用于对所述超声波换能器进行支撑，且所述弹性支撑件能够对所述超声波换能器的支撑进行弹性调节。4. The ultrasonic device for powder compression molding according to claim 2, wherein the ultrasonic vibration generator further comprises an elastic support for supporting the ultrasonic transducer, and the elastic The support member can elastically adjust the support of the ultrasonic transducer. 5.根据权利要求4所述的用于粉末压制成型的超声波装置，其特征在于：所述弹性支撑件为弹簧，所述弹簧的两端分别与所述超声波换能器和所述模座止抵。5 . The ultrasonic device for powder press molding according to claim 4 , wherein the elastic support member is a spring, and the two ends of the spring are respectively stopped with the ultrasonic transducer and the mold base. 6 . arrive. 6.根据权利要求2所述的用于粉末压制成型的超声波装置，其特征在于：所述撞击件为钢球，所述变幅杆与所述凹模之间设置有多颗钢球。6 . The ultrasonic device for powder press molding according to claim 2 , wherein the impact member is a steel ball, and a plurality of steel balls are arranged between the horn and the die. 7 . 7.根据权利要求6所述的用于粉末压制成型的超声波装置，其特征在于：所述变幅杆在面向所述凹模的一端固定有护套，且多颗所述钢球设置在所述护套上，并与所述凹模抵接配合。7 . The ultrasonic device for powder press molding according to claim 6 , wherein a sheath is fixed at the end of the horn facing the die, and a plurality of the steel balls are arranged at the end of the horn. 8 . on the sheath, and abutting and mating with the die. 8.根据权利要求1所述的用于粉末压制成型的超声波装置，其特征在于：所述超声波装置进一步包括冷却系统，用于对所述超声振动发生器进行冷却降温。8 . The ultrasonic device for powder compression molding according to claim 1 , wherein the ultrasonic device further comprises a cooling system for cooling the ultrasonic vibration generator. 9 . 9.根据权利要求8所述的用于粉末压制成型的超声波装置，其特征在于：所述冷却系统包括气管接头，所述气管接头设置在所述模座的模座盖板上，用于往所述模座内导入冷气，且所述冷气能够途经所述超声振动发生器，并从所述凹模与所述模座之间的装配间隙向外排出。9 . The ultrasonic device for powder press molding according to claim 8 , wherein the cooling system comprises a gas pipe joint, and the gas pipe joint is arranged on the mold seat cover of the mold base, and is used to transfer to the mold base. 10 . Cold air is introduced into the die base, and the cold air can pass through the ultrasonic vibration generator and be discharged from the assembly gap between the die and the die base. 10.根据权利要求1所述的用于粉末压制成型的超声波装置，其特征在于：所述模座内设置有多个超声振动发生器。10 . The ultrasonic device for powder compression molding according to claim 1 , wherein a plurality of ultrasonic vibration generators are arranged in the mold base. 11 .
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CN111483034A (en) * 2020-05-25 2020-08-04 南通华兴磁性材料有限公司 Forming method of flat ultra-thin manganese-zinc ferrite magnetic core
CN114619029A (en) * 2022-01-31 2022-06-14 江苏海曼特电气有限公司 Compacting die for powder metallurgy production

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