Screening device for CBN composite material

Abstract

The utility model relates to the technical field of material screening, in particular to a CBN composite material screening device which comprises a frame, a cavity is formed in the inner surface of the frame, spring sleeves are fixedly installed at the upper end and the lower end of the inner wall, away from a screening box, of the cavity, protection plates are fixedly installed on the inner walls, away from the screening box, of the spring sleeves, and the protection plates are located in the spring sleeves. Second springs are fixedly mounted on the side surfaces of the protection plates, mounting plates are connected to the ends, close to the screening box, of the second springs, telescopic columns are fixedly mounted on the side surfaces, close to the screening box, of the mounting plates, movable plates are fixedly mounted on the side surfaces, away from the protection plates, of the telescopic columns, and limiting columns are fixedly mounted on the side walls, close to the screening box, of the movable plates. The screening device has the beneficial effects that by arranging the limiting mechanism, the aperture of the screening plate can be rapidly adjusted according to actual needs, the screening efficiency is improved, the operation cost is reduced, and the production flexibility and adaptability are further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the material screening field, concretely is a kind of screening device of CBN composite material. BACKGROUND

[0002] CBN is the abbreviation of Cubic Boron Nitride of polycrystalline cubic boron nitride, very hard, microhardness HV700~9800Mpa, hardness and diamond hardness are similar, high thermal conductivity, can withstand higher cutting temperature.Quenching steel high strength, high hardness, low plasticity, cutting force, cutting temperature is high, the tool of resistance to collapse, wear resistance, thermal conductivity requirement is very high, according to current processing technology, CBN composite material is very suitable for processing quenching steel tool.

[0003] Existing CBN composite material cast tool can cut cast iron (gray cast iron, nodular cast iron, cold hard cast iron, high chromium cast iron, alloy wear-resistant cast iron etc.), hard steel (quenching steel, bearing steel, die steel, high manganese steel, high-speed steel etc.), high-temperature alloy, hard alloy etc.Material, the preferred tool for turning difficult-to-machine materials, cubic boron nitride (CBN) tool has been widely used in continuous cutting of high-hardness difficult-to-machine materials, can realize turning instead of grinding, changes the low-efficiency process of grinding high-hardness workpiece materials with grinding wheel, improves processing efficiency and processing quality.

[0004] However, the screen plate of traditional CBN composite material screening device is prone to breakage due to long-term work, and the existing screening device cannot replace the screen plate since the screen plate is fixed inside the screening device, so when the screen plate is damaged or worn, it needs to be replaced, greatly increasing the production cost, and different particle sizes of CBN composite material need different screen plate aperture for screening, and the applicability is relatively limited. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of screening device of CBN composite material to solve the problem that the screen plate of traditional CBN composite material screening device is prone to breakage due to long-term work in the above background art, and the existing screening device cannot replace the screen plate since the screen plate is fixed inside the screening device, so when the screen plate is damaged or worn, it needs to be replaced, and different particle sizes of CBN composite material need different screen plate aperture for screening, increasing production cost.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of screening device of CBN composite material, comprising:

[0007] The screen box is externally fixedly installed with two limiting mechanisms, the limiting mechanism comprises a frame, an inner surface of the frame is provided with a cavity, spring sleeves are fixedly installed on the inner wall of the screen box at both ends of the cavity, a protection plate is fixedly installed on the inner wall of the screen box away from the spring sleeves, the protection plate is located inside the spring sleeves, second springs are fixedly installed on the side surface of the protection plate, and mounting plates are connected to one end of the second springs close to the screen box.

[0008] A telescopic column is fixedly installed on the side surface of the mounting plate close to the screen box, a movable plate is fixedly installed on the side surface of the telescopic column away from the protection plate, a limiting column is fixedly installed on the side wall of the movable plate close to the screen box, a pull rod is fixedly installed on the side surface of the movable plate close to the telescopic column, and a connecting block is fixedly installed on the side surface of the pull rod.

[0009] Preferably, one end of the telescopic column penetrates the inner wall of the spring sleeve and is fixedly connected with the movable plate, holes are formed in the inner wall of the screen box on both sides, and one end of the pull rod away from the movable plate penetrates the inner wall of the cavity and is fixedly connected with the connecting block.

[0010] Preferably, limiting bottom plates are fixedly installed on the inner walls of both sides of the screen box, fixed frames are fixedly installed on the upper surfaces of the limiting bottom plates, and sieve plates are arranged on the inner walls of the fixed frames.

[0011] Preferably, one end of the limiting column away from the movable plate penetrates the hole and is in contact with the upper surface of the fixed frame, and the pull rod is located between the two telescopic columns.

[0012] Preferably, a buffer pad layer is arranged between the movable plate and the frame close to the screen box, and a rubber gasket is sleeved on the outer surface of the mounting plate.

[0013] Preferably, a guide plate is fixedly installed on the inner wall of the screen box and is arranged in an inclined manner.

[0014] Preferably, a discharging plate is fixedly installed on the side surface of the screen box, and an inlet frame is movably installed on the upper surface of the screen box.

[0015] Preferably, a vibrating mechanism is fixedly installed on the lower surface of the screen frame, and the vibrating mechanism comprises a vibrating motor and a base.

[0016] Compared with the prior art, the screen box has the advantages that:

[0017] The utility model provides a kind of screening device for CBN composite material, by setting limit mechanism, when needing to replace screen plate, by pulling out connecting block, movable plate fixedly connected with the lateral surface of pull rod is moved, in the process of moving, the second spring connected with the lateral surface of mounting plate is compressed in spring sleeve by telescopic column, so that the limit column connected with the lateral surface of movable plate is separated from hole, and further, wear or suitable screen plate is replaced, can be quickly adjusted screen plate aperture according to actual needs, not only improve screening efficiency, reduce operating cost, also increase the flexibility and adaptability of production. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the side sectional structure diagram of the utility model;

[0020] Figure 3 It is the limit mechanism structure schematic diagram of the utility model;

[0021] Figure 4 It is the Figure 2 Enlarged view of A in the middle.

[0022] In the drawing: 1, base;2, vibration motor;3, first spring;4, screening box;5, limit bottom plate;6, fixed frame;7, screen plate;8, frame;9, cavity;10, protection plate;11, second spring;12, mounting plate;13, spring sleeve;14, telescopic column;15, movable plate;16, limit column;17, aperture;18, pull rod;19, connecting block;20, buffer pad layer;21, rubber gasket;22, discharge plate;23, feeding frame;24, guide plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1 to 4 The utility model provides a kind of technical scheme: a kind of screening device for CBN composite material;

[0025] Embodiment one:

[0026] In order to optimize the control of CBN composite material particle size distribution in screening, reduce sintering shrinkage, the limiting bottom plate 5 is fixedly installed on the inner wall of both sides of the screening box 4, the upper surface of the limiting bottom plate 5 is fixedly installed with the fixed frame 6, the inner wall of the fixed frame 6 is provided with the sieve plate 7, the side surface of the screening box 4 is fixedly installed with the discharge plate 22, the upper surface of the screening box 4 is movably installed with the feeding frame 23, the lower surface of the screening box 4 is fixedly installed with the vibrating mechanism, the vibrating mechanism comprises: the vibrating motor 2, the base 1, the upper surface of the base 1 is fixedly installed with the first spring 3 near the four corners, the CBN composite material particles are screened through the multi-layer screening device, which can provide more accurate screening effect, ensure the consistency of particle size, and is particularly important for the CBN composite material cast cutter, improve the processing efficiency and processing quality.

[0027] Example two:

[0028] In order to quickly adjust the aperture of the sieve plate 7 or replace the worn sieve plate 7 according to actual needs on the basis of example one, two limiting mechanisms are fixedly installed on the outside of the screening box 4, the limiting mechanism comprises: the frame 8, the inner surface of the frame 8 is provided with the cavity 9, the upper and lower ends of the cavity 9 away from the inner wall of the screening box 4 are fixedly installed with the spring sleeve 13, the inner wall of the spring sleeve 13 away from the screening box 4 is fixedly installed with the protection plate 10, the protection plate 10 is located in the interior of the spring sleeve 13, the side surface of the protection plate 10 is fixedly installed with the second spring 11, one end of the second spring 11 close to the screening box 4 is connected with the mounting plate 12, the side surface of the mounting plate 12 close to the screening box 4 is fixedly installed with the telescopic column 14, the side surface of the telescopic column 14 away from the protection plate 10 is fixedly installed with the movable plate 15, the side wall of the movable plate 15 close to the screening box 4 is fixedly installed with the limiting column 16, the side surface of the movable plate 15 close to the telescopic column 14 is fixedly installed with the pull rod 18, the side surface of the pull rod 18 is fixedly installed with the connecting block 19, one end of the telescopic column 14 penetrates through the inner wall of the spring sleeve 13 and is fixedly connected with the movable plate 15, the inner wall of the screening box 4 is provided with the opening 17, one end of the pull rod 18 away from the movable plate 15 penetrates through the inner wall of the cavity 9 and is fixedly connected with the connecting block 19, by pulling the connecting block 19 outward, the movable plate 15 fixedly connected with the pull rod 18 and the limiting column 16 are moved, in the process of moving, the second spring 11 connected with the side surface of the mounting plate 12 is compressed in the spring sleeve 13 through the telescopic column 14, so that the limiting column 16 connected with the side surface of the movable plate 15 is separated from the opening 17, and then the worn or suitable sieve plate 7 is replaced, the aperture of the sieve plate 7 can be quickly adjusted according to actual needs, which not only improves the screening efficiency, but also reduces the operating cost.

[0029] Example three:

[0030] In order to prolong the service life of the spring sleeve 13 and the cavity 9, a buffer layer 20 is arranged between the movable plate 15 and the frame 8 close to the screening box 4, and a rubber gasket 21 is sleeved on the outer surface of the mounting plate 12, so as to reduce the friction between the mounting plate 12 and the inner wall of the spring sleeve 13, prolong the service life of the spring sleeve 13, prevent the movable plate 15 from damaging the frame 8 through the rebound of the second spring 11, prolong the service life, and reduce the cost.

[0031] Working principle: through the driving of the vibration motor 2, the CBN composite material particles are screened, a more accurate screening effect can be provided, the consistency of the particle size is ensured, it is particularly important for the CBN composite material cast cutter, the processing efficiency and the processing quality are improved, when it is necessary to quickly adjust the aperture of the screen plate 7 or replace the worn screen plate 7, the connecting block 19 is pulled outwards, the movable plate 15 and the limiting column 16 fixedly connected to the side surface of the pull rod 18 are driven to move, in the moving process, the second spring 11 connected to the side surface of the mounting plate 12 is compressed in the spring sleeve 13 through the telescopic column 14, so that the limiting column 16 connected to the side surface of the movable plate 15 is separated from the hole 17, and then the worn or suitable screen plate 7 is replaced, the aperture of the screen plate 7 can be quickly adjusted according to actual needs, the screening efficiency is improved, the operation cost is reduced, the rubber gasket 21 is sleeved on the outer surface of the mounting plate 12, the friction between the mounting plate 12 and the inner wall of the spring sleeve 13 is reduced, the service life of the spring sleeve 13 is prolonged, the buffer layer 20 is arranged, the movable plate 15 is prevented from damaging the frame 8 through the rebound of the second spring 11, the service life is prolonged, and the cost is reduced.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the range of the utility model is defined by the appended claims and its equivalents.

Claims

1. A screening device for CBN composites, characterized by: The utility model relates to a screening box (4), two limiting mechanisms are fixedly installed to the outside of screening box (4), and the limiting mechanism includes: the inner surface of frame (8) is provided with cavity (9), spring sleeve (13) is fixedly installed to the inner wall of cavity (9) away from screening box (4) and goes up and down two ends, the inner wall of spring sleeve (13) away from screening box (4) is fixedly installed with protection plate (10), protection plate (10) is located inside spring sleeve (13), the side surface of protection plate (10) is fixedly installed with second spring (11), and the one end of second spring (11) close to screening box (4) is connected with mounting plate (12). The side surface of mounting plate (12) close to screening box (4) is fixedly installed with telescopic column (14), the side surface of telescopic column (14) away from protection plate (10) is fixedly installed with movable plate (15), the side wall of movable plate (15) close to screening box (4) is fixedly installed with limiting column (16), the side surface of movable plate (15) close to telescopic column (14) is fixedly installed with pull rod (18), and the side surface of pull rod (18) is fixedly installed with connecting block (19). One end of telescopic column (14) penetrates the inner wall of spring sleeve (13) and is fixedly connected with movable plate (15), the both sides of the inner wall of screening box (4) are provided with aperture (17), and the one end of pull rod (18) away from movable plate (15) penetrates the inner wall of cavity (9) and is fixedly connected with connecting block (19).

2. The apparatus for screening CBN composite material according to claim 1, wherein: The both sides of the inner wall of screening box (4) are fixedly installed with limiting bottom plate (5), the upper surface of limiting bottom plate (5) is fixedly installed with fixed frame (6), and the inner wall of fixed frame (6) is provided with sieve plate (7).

3. The apparatus for screening CBN composite material according to claim 1, wherein: The one end of limiting column (16) away from movable plate (15) penetrates aperture (17) and contacts the upper surface of fixed frame (6), and pull rod (18) is located between two telescopic columns (14).

4. The apparatus of claim 1, wherein: The buffer pad layer (20) is arranged between movable plate (15) close to screening box (4) and frame (8), and the outer surface of mounting plate (12) is sleeved with rubber washer (21).

5. The apparatus of claim 1, wherein: The inner wall of screening box (4) is fixedly installed with guide plate (24), and the guide plate (24) is inclined.

6. The apparatus of claim 1, wherein: The side surface of screening box (4) is fixedly installed with discharge plate (22), and the upper surface of screening box (4) is movably installed with feeding frame (23).

7. The apparatus of claim 1, wherein: The lower surface of screening box (4) is fixedly installed with a vibrating mechanism, and the vibrating mechanism comprises a vibrating motor (2) and a base (1), and the upper surface of the base (1) is fixedly installed with first springs (3) close to four corners.

8. The apparatus of claim 1, wherein: ​

Images