CN103320802A

CN103320802A - Device and method for performing variable contact acid pickling on surface of permanent magnet material

Info

Publication number: CN103320802A
Application number: CN2013102554002A
Authority: CN
Inventors: 王育平; 叶孟林; 曾琦勇
Original assignee: Ningbo Ketian Magnet Co Ltd; Ningbo Jintian Copper Group Co Ltd
Current assignee: Ningbo Ketian Magnetic Industry Co ltd; Ningbo Jintian Copper Group Co Ltd
Priority date: 2013-06-25
Filing date: 2013-06-25
Publication date: 2013-09-25
Anticipated expiration: 2033-06-25
Also published as: CN103320802B

Abstract

A variable contact pickling device and method for the surface of permanent magnet materials, including a transmission mechanism, a connecting rod mechanism, a pickling tank and a pickling basket. The tank is provided with a basket rack that is movably fitted with the pickling basket, the pickling basket is supported by the hanger on the upper end of the connecting rod mechanism, and the pickling basket is driven by the transmission shaft and eccentric wheel of the transmission mechanism in the pickling tank Move up and down to constantly change the contact surface between the permanent magnet material and the pickling solution. When the surface of the permanent magnet is pickled, the contact surface between the surface of the permanent magnet and the pickling solution is continuously changed through the variable contact device, so that all surfaces of the permanent magnet can fully contact with the acid solution, thereby improving the pickling effect and avoiding The problem of missing corners caused by the mutual collision of permanent magnets by manual work greatly reduces labor intensity, ensures high-quality products, and improves the automation level.

Description

Permanent magnetic material surface becomes contact acid cleaning device and method

Technical field

The present invention relates to the surface acid-washing of material, the surface that relates in particular to Nd-Fe-Bo permanent magnet material becomes contact pickling technology.

Background technology

Be that the permanent magnet material of representative is in the level that has reached comparative maturity aspect preparation and the production with the sintered NdFeB.Yet because the structure of neodymium iron boron, its corrosion resisting property is relatively poor, must could use by protective treatment.Domestic 95% the sintered NdFeB product employing plating guard technology that surpasses.

Nd-Fe-Bo permanent magnet material generally all needs to carry out pickling to material before plating, with corrosion remaining in the oxide compound of removing magnetic material surface and the micropore etc.The mode of operation of manual pickling is adopted in Nd-Fe-Bo permanent magnet material pickling at present more, be that the workman is with the hands carrying the magnet with nylon wire or wire netting dress, in pickle solution, rock back and forth up and down, not only labour intensity is big, and magnet surface runs foul of each other, make outward appearance produce defectives such as unfilled corner, cause product rejection.Therefore, the permanent magnetic material surface pretreatment technology also needs further to improve.

Summary of the invention

The present invention be directed to the above-mentioned state of the art and a kind of change surface in contact pickler and using method thereof are provided.

The technical solution used in the present invention is: permanent magnetic material surface becomes the contact acid cleaning device, comprise transmission rig, linkage assembly, pickling tank and pickling basket, it is characterized in that the pickling basket is divided into by the parting bead that interweaves in length and breadth makes permanent magnet space spaced apart from each other, establish the basket shelf with the mutual movable fit of described pickling basket on the pickling tank, the pickling basket is supported on the upper end of linkage assembly by hanger, transmission shaft and eccentric wheel drive pickling basket by transmission rig move up and down in pickling tank, constantly change the contact surface of permanent magnet material and pickle solution.

Horizontal stripe and taeniae by mutual balance at the bottom of the described pickling basket are woven into grid, establish the vertical parting bead that interweaves in length and breadth on the grid hoop top is slit into the identical space of size, the facade in each space is divided into by the parting bead of oblique parallel and makes permanent magnet cubic space spaced apart from each other.

Described basket shelf is made up of the parting bead that is parallel to each other and is laterally put bar, and every spacing of laterally putting bar is corresponding with the horizontal stripe spacing at the bottom of the described basket, and every laterally to put bar corresponding with the taeniae size at the bottom of the described basket to recessed transverse pitch.

Permanent magnetic material surface becomes the contact acid washing method, and its feature may further comprise the steps:

A), the acid solution of putting into modulated good concentration in the pickling tank is an amount of, permanent magnet put into each cubes of pickling basket respectively;

B), the sprocket wheel of starter motor drive transmission moves up and down in pickling tank by the eccentric wheel drivening rod components drive pickling basket on the transmission shaft, the horizontal boss that raises up in the basket shelf moves up and down permanent magnet in the pickling basket synchronously, makes permanent magnet and pickle solution uniform contact;

C), when changing another batch permanent magnet, detect and regulate concentration and the temperature of acid solution.

The invention has the beneficial effects as follows: during the permanent magnet surfaces pickling, by becoming contact device, change the contact surface of permanent magnet surfaces and pickle solution incessantly, each face of permanent magnet all can fully be contacted with acid solution, thereby the raising pickling effect has avoided handwork that permanent magnet is collided mutually and the problem of the unfilled corner that causes has significantly reduced labour intensity, guarantee the product high quality, improved automatization level.

Description of drawings

Fig. 1 is front view of the present invention.

Fig. 2 is side-view of the present invention.

Fig. 3 is the hoop front view.

Fig. 4 is the hoop left view.

Fig. 5 is the hoop vertical view.

Fig. 6 is basket shelf front view.

Fig. 7 is basket shelf left view.

Fig. 8 is basket shelf vertical view.

Fig. 9 is the hanger front view.

Figure 10 is the hanger vertical view.

Figure 11 is the connecting rod front view.

Figure 12 is the eccentric wheel sectional view.

Embodiment

Below in conjunction with drawings and Examples the present invention is elaborated.

Shown in Fig. 1,2, permanent magnetic material surface becomes the contact acid cleaning device, comprises transmission rig, linkage assembly, pickling basket and pickling tank.

Transmission rig 1Formed by motor 11, speed reduction unit 12, chain-wheel mechanism 13, transmission shaft 14.

Linkage assembly 2Formed by eccentric wheel 21, fulcrum 22, connecting rod 23, bearing pin 24, moving axis 25.As Fig. 1 and shown in Figure 12, offer 1

eccentric orfice

211 and 1 transmission shaft fixed orifices 212 on the described eccentric wheel 21, eccentric wheel 21 is coupled to one by transmission shaft fixed orifices 212 and transmission shaft 14.As Fig. 1 and shown in Figure 12, the upper/lower terminal of described connecting rod 23 has connecting hole 231 and connecting hole 232, and described fulcrum 22 passes the connecting hole 231 of connecting rod 23 and the eccentric orfice 211 of eccentric wheel 21 is connected and fixed; The lower end of described moving axis 25 is connected and fixed by bearing pin 24 and connecting rod 23.

Shown in Fig. 1,2,3,4,5, Pickling basket 3By at the bottom of hoop 31, the basket 32, cubes 33, hanger 34 form.32 are woven into grid by the horizontal stripe 311 that is parallel to each other and taeniae 312 at the bottom of the described basket, establish the vertical parting bead 313 that interweaves in length and breadth on the grid, and hoop is separated into the identical cubes 33 of several sizes.The facade in each space is divided into by the parting bead 315 of oblique parallel and makes permanent magnet cubic space spaced apart from each other.Each cubes 33 peripheric surface is fixed by vertical parting bead 313.The both sides of hoop 31 are respectively equipped with handle 314.Described hoop 31 is hung on left and right sides hanger 34, and hanger 34 tops are by connecting the fixing to extension bar 35 of guide pin bushing and connecting rod, and 32 are enclosed within the hanger 34 at the bottom of the basket.

Shown in Fig. 1,2,6,7,8, pickling tank 4Formed by cell body 41, groove lid 42, guide pin bushing 43, shield cap 44, basket shelf 45, poppet 46.Described poppet 46 places the bottom of pickling tank 4, and basket shelf 45 is fixed in poppet 46 tops, and fixedly there is guide pin bushing 43 at the place, outside that described groove lid 42 extends cell body 41; Described basket shelf 45 comprises deckle board 451, laterally puts bar 452 and backstay 453, basket shelf 45 is made up of the bar 452 of laterally putting that is parallel to each other, every laterally to put the spacing of bar 452 corresponding with the spacing of 32 horizontal stripe 311 at the bottom of the described basket, and every laterally to put bar 452 corresponding with 32 taeniae 312 sizes at the bottom of the described basket to recessed transverse pitch.The described bar 452 of laterally putting is made up of several equally distributed boss in interval that raises up, and taeniae 312 quantity and width at the bottom of the quantity of its boss that raises up and width and the basket on 32 are suitable, hoop 31 can be placed on laterally put bar 452 to move up and down; Described backstay 453 is fixed on four limits of deckle board 451, and laterally puts between the bar 452 and leave the space, is used for placing hoop 31.

The guide pin bushing 43 of pickling tank 4 is passed in the upper end of the moving axis 25 of described linkage assembly 2, and is connected and fixed with the hanger 34 of pickling basket 3 with to extension bar 35, and described pickling basket 3 is hung on the basket shelf 45, can move up and down.

Permanent magnetic material surface becomes the contact acid washing method, may further comprise the steps, and the acid solution of at first putting into modulated good concentration in the pickling tank 4 is an amount of, and consumption is generally 1/2～1/3 of pickling tank volume.Permanent magnet is put into each cubes of pickling basket 3 respectively; Starter motor 11 drives sprocket wheel 13, eccentric wheel 21 drivening rod components drive pickling baskets 3 by transmission shaft 14 ends move up and down in pickling tank 4, the permanent magnet bottom surface alternately contacts with the bottom of laterally putting bar 452 tops or hoop 31, makes permanent magnet and pickle solution uniform contact; When changing another batch permanent magnet, detect and regulate concentration and the temperature of acid solution.

At first permanent magnet is put in the hoop 31, each cubes is put one, then hoop 31 is put to hanger frame 36, can be placed on the basket shelf 45 at the bottom of making the basket of hoop 31, at this moment, the permanent magnet bottom is touched mutually with the top of basket shelf 45, be placed with an amount of pickle solution in the pickling tank 4, motor 11 starts then, slows down by speed reduction unit 12, drive chain-wheel mechanism 13 runnings, drive transmission shaft 14 and drive eccentric wheel 21 rotations, under eccentric action, connecting rod 23 drives moving axis 25 and moves up and down, moving axis 25 drives hangers 34 and moves up and down, and moves up and down along the short transverse of basket shelf 45 thereby drive hoop 31.At this time, the permanent magnet bottom surface alternately contacts with the bottom of putting bar 452 tops or hoop 31, thereby the permanent magnet bottom can all fully be contacted with acid solution.Fixing slanted bar 315 around the hoop 31 can guarantee permanent magnet in the process of moving up and down, and the side can all fully contact with acid solution, thus the assurance pickling effect.

Claims

1. A variable contact pickling device for the surface of permanent magnet materials, including a transmission mechanism, a connecting rod mechanism, a pickling tank and a pickling basket, which is characterized in that the pickling basket is divided into spaces that separate the permanent magnets from each other by crisscross bars , the pickling tank is provided with a basket rack that is movably fitted with the pickling basket, the pickling basket is supported by the hanger on the upper end of the connecting rod mechanism, and the pickling basket is driven by the drive shaft and eccentric wheel of the transmission mechanism in the pickling basket. The up and down movement in the washing tank constantly changes the contact surface between the permanent magnet material and the pickling solution.

2. The surface variable contact pickling device for permanent magnet materials according to claim 1, characterized in that the bottom of the pickling basket (32) is interwoven into a grid by mutually balanced horizontal bars (311) and vertical bars (312) , vertical and horizontal interlaced bars (313) are set on the grid to divide the upper part of the basket into spaces of the same size, and the facade of each space is divided by obliquely parallel spacers (315) to separate the permanent magnets from each other. cube space.

3. The surface variable contact pickling device for permanent magnet materials according to claim 1, characterized in that the basket shelf (45) is composed of horizontal shelves (452) parallel to each other, and each horizontal shelf (452) The pitch corresponds to the pitch of the horizontal bars (311) at the bottom of the basket, and the downward concave horizontal pitch of each horizontal bar (452) corresponds to the size of the vertical bars (312) at the bottom of the basket.

4. The variable-contact pickling device for the surface of permanent magnet materials according to claim 3, characterized in that the horizontal shelf (452) is composed of a number of bosses that protrude upward and are evenly spaced.

5. The surface variable contact pickling device for permanent magnet materials according to claim 4, characterized in that the number and width of the upwardly protruding bosses of the horizontal shelf (452) are the same as those of the vertical strips on the basket bottom (32) ( 312) to suit the number and width.

6. The variable contact pickling method for the surface of the permanent magnet material, which is characterized in that it comprises the following steps:

a) Put an appropriate amount of acid solution with adjusted concentration into the pickling tank, and put the permanent magnets into each cube of the pickling basket;

b) The sprocket driven by the starter motor drives the connecting rod assembly through the eccentric wheel on the drive shaft to push the pickling basket to move up and down in the pickling tank, and the bottom surface of the permanent magnet alternately contacts with the top of the horizontal shelf or the bottom of the basket frame, Make the permanent magnet evenly contact with the pickling solution;

c) When replacing another batch of permanent magnets, detect and adjust the concentration and temperature of the acid solution.