CN115487994B

CN115487994B - Graphite coating device for hard alloy production

Info

Publication number: CN115487994B
Application number: CN202211180539.0A
Authority: CN
Inventors: 梁群; 彭庆权; 代本道
Original assignee: Henan Pingmei Shenma Superhard Materials Co ltd
Current assignee: Henan Pingmei Shenma Superhard Materials Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-07-04
Anticipated expiration: 2042-09-26
Also published as: CN115487994A

Abstract

The invention discloses a graphite coating device for hard alloy production, which relates to the technical field of hard alloy production and comprises an inking tank, a supporting piece, a supporting mechanism and a driving mechanism, wherein the supporting piece is arranged in the inking tank in a lifting manner, a supporting station for placing hard alloy is arranged on the supporting piece, the ink homogenizing mechanism is arranged around the supporting station, the driving mechanism drives the ink homogenizing mechanism to uniformly ink the edge of the hard alloy when the supporting station is positioned above a liquid level, and the driving mechanism comprises a transmission shaft and a first driving unit which are arranged on the outer side of the inking tank. The hard alloy is immersed by the lifting support, when the hard alloy is immersed until the ink is lifted to be above the liquid level, the driving mechanism drives the ink homogenizing mechanism to evenly coat the edge part of the hard alloy in the support station in a surrounding manner, so that residual redundant graphite coating on the edge of the hard alloy is avoided, and uneven graphite thickness of the edge part and the center part of the finished product after airing is prevented.

Description

Graphite coating device for hard alloy production

Technical Field

The invention relates to the technical field of hard alloy production, in particular to a graphite coating device for hard alloy production.

Background

The production process of the hard alloy comprises two steps of compaction and sintering, and before the compacted hard alloy is sintered (the compacted hard alloy is in a round cake-shaped structure), a layer of liquid graphite is coated on the outer surface of the hard alloy by workers so as to improve the high temperature resistance of the hard alloy.

The prior patent publication number as the applicant previously applied is: CN214682590U, publication day is 2021 11 month 12, the name of this patent is "a graphite brush mechanism for carbide production", this patent includes the base, four supporting leg fixedly connected with brush box are passed through to the upper surface of base, brush box's inside is provided with along vertical direction slip and is placed the box, the upper surface fixed mounting of base has servo motor, servo motor's output fixed mounting has the lead screw, the week side threaded connection of lead screw has movable rod, one side of movable rod and one side fixed connection of placing the box, this a graphite brush mechanism for carbide production through servo motor and the setting of lead screw for the staff can put into the brush box that is equipped with liquid graphite, thereby makes the carbide of placing on placing the box submergence in liquid graphite completely, does not need the staff to brush graphite on the carbide one by one, easy operation has improved staff's work efficiency.

The above prior application still has the disadvantage that when the cemented carbide is fully impregnated with the paint, the placement box is lifted and the cemented carbide is separated from the liquid graphite contained in the brush box, at this time, the redundant paint on the top of the cemented carbide can diffuse to the edge and then drip, and at this time, the paint is directly dried, which often results in uneven thickness of the paint on the edge and the center of the finished product.

Disclosure of Invention

The invention aims to provide a graphite coating device for producing hard alloy, which aims to solve the defects in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a carbide production is with graphite coating device, includes scribbles the ink pond, still includes the bearing piece, and its lift sets up in scribbling the ink pond, is equipped with the bearing station that is used for placing the carbide on it, evenly ink mechanism around the setting of bearing station, still includes actuating mechanism, works as when bearing station is located above the liquid level, actuating mechanism drives even ink mechanism and carries out even black to the edge of carbide.

Preferably, the driving mechanism comprises a transmission shaft and a first driving unit, wherein the transmission shaft and the first driving unit are arranged on the outer side of the inking tank, the first driving unit comprises a connecting piece in threaded connection with the transmission shaft, and one end of the connecting piece is clamped with the supporting piece.

Preferably, the driving mechanism further comprises a second driving unit, the second driving unit comprises a transmission belt arranged on a transmission shaft and a telescopic sleeve member rotatably arranged in the inking tank, and the transmission shaft drives the telescopic sleeve member to rotate through the transmission belt.

Preferably, the top of flexible external member runs through the support and peg graft and have the driving disk, the driving disk is located the support station below, and the driving disk is used for the drive even black mechanism rotates.

Preferably, the telescopic sleeve comprises an inner sleeve penetrating through the bottom of the ink-applying tank and an outer sleeve penetrating through the supporting piece, the outer sleeve and the inner sleeve are mutually sleeved and synchronously rotate, a vibration assembly is arranged between the outer sleeve and the inner sleeve, and when the outer sleeve is lifted, the vibration assembly intermittently impacts the transmission disc until the supporting piece is positioned above the liquid level.

Preferably, the vibration assembly comprises a baffle fixedly arranged in the outer sleeve, two sides of the bottom of the baffle are respectively and elastically hinged with a deflector rod, racks are respectively and fixedly connected with two sides of the inner wall of the inner sleeve, protruding parts which are lapped on the racks are arranged at the bottom of the deflector rods, a push rod penetrating through the baffle is hinged between the deflector rods, and the top of the push rod is abutted against the transmission disc.

Preferably, the ink homogenizing mechanism comprises a rotating frame, a horizontal ink homogenizing roller and a vertical ink homogenizing roller which are distributed on the rotating frame in an annular array, wherein a driving rod is elastically inserted in the horizontal ink homogenizing roller, one end of the driving rod is fixedly connected with a conical friction wheel, and a conical transmission part in transmission connection with the conical friction wheel is arranged at the edge of the transmission disc.

Preferably, an ejection mechanism is arranged in the outer sleeve, and when the bearing station is above the liquid level, the bearing station can be pushed out of the bearing station by the push rod driven by the ejection mechanism after the bearing station is continuously lifted.

Preferably, the ejection mechanism comprises a main cylinder fixed at the top of the partition plate and auxiliary cylinders positioned at two sides of the main cylinder and communicated with the main cylinder, the push rod penetrates through the main cylinder, a first piston plate is arranged in the main cylinder by the push rod, a second piston plate is arranged in the auxiliary cylinder, a bracket penetrating through the top of the auxiliary cylinder is fixedly connected to the top of the second piston plate, pull rods penetrating through the partition plate and the bracket are fixedly connected to two sides of the top of the inner sleeve, and a limiting block is fixedly connected to the top of the bracket by the pull rods.

Preferably, a reset piece is arranged between the main cylinder and the transmission disc.

In the technical scheme, the hard alloy is immersed by the lifting supporting piece, when the hard alloy is immersed, and the hard alloy rises above the liquid level, the driving mechanism drives the ink homogenizing mechanism to uniformly coat the edge part of the hard alloy in the supporting station in a surrounding manner, so that residual redundant graphite coating on the edge of the hard alloy is avoided, and the graphite thickness of the edge part and the central part of the finished product after airing is prevented from being uneven.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all of the features of the disclosed technology.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of the overall structure of a graphite coating device for producing cemented carbide according to the present invention;

FIG. 2 is a bottom view of a graphite coating device for cemented carbide production according to the present invention;

FIG. 3 is a cross-sectional view of a graphite coating apparatus for cemented carbide production according to the present invention;

FIG. 4 is a schematic diagram of the structure of an ink homogenizing mechanism in a graphite coating device for producing hard alloy;

FIG. 5 is a cross-sectional view of an ink homogenizing mechanism in a graphite coating device for producing cemented carbide according to the present invention;

FIG. 6 is a schematic diagram showing the connection of the telescopic sleeve, the driving disc and the ink homogenizing mechanism in the graphite coating device for producing hard alloy;

FIG. 7 is an overall cross-sectional view of the telescoping suite, drive disk and ink-leveling mechanism in a graphite coating apparatus for cemented carbide production of the present invention;

FIG. 8 is a partial cross-sectional view of a telescopic sleeve in a graphite coating device for cemented carbide production according to the present invention;

FIG. 9 is an internal structural view of a telescopic sleeve in a graphite coating device for producing cemented carbide according to the present invention;

fig. 10 is a schematic diagram showing a state that a middle ejection mechanism of the graphite coating device for producing hard alloy ejects a driving disc.

Reference numerals illustrate:

1. an inking tank; 2. a support; 3. an ink homogenizing mechanism; 301. a rotating frame; 302. a transverse ink homogenizing roller; 303. a vertical ink homogenizing roller; 305. a driving rod; 308. a conical friction wheel; 4. a driving mechanism; 402. a transmission shaft; 403. a connecting piece; 404. a transmission belt; 404.1, a main drive belt; 404.2, an auxiliary transmission belt; 405. a motor; 406. a belt wheel; 5. a telescoping sleeve; 501. an inner sleeve; 502. an outer sleeve; 503. a drive tooth; 504. a guide groove; 505. a limit rod; 6. a drive plate; 601. a conical transmission part; 7. a vibration assembly; 701. a partition plate; 702. a deflector rod; 703. a rack; 704. a boss; 705. a push rod; 706. a first piston plate; 708. a hinge rod; 709. a through groove; 8. an ejection mechanism; 801. a main cylinder; 802. an auxiliary cylinder; 803. a second piston plate; 804. a bracket; 805. a pull rod; 806. a limiting block; 9. and a reset piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the terms "comprising" or "includes" and the like in this disclosure is intended to cover an element or article listed after that term and equivalents thereof without precluding other elements or articles. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

Referring to fig. 1-10, a graphite coating device for hard alloy production provided by the embodiment of the invention comprises an inking tank 1 and a supporting member 2, wherein the supporting member 2 is lifted in the inking tank 1, a supporting station for placing hard alloy is arranged on the supporting member, when the supporting member 2 is lowered below the liquid level of liquid graphite in the inking tank 1 with the supporting station, the graphite coating can completely wrap the hard alloy on the supporting station to finish dip coating operation on the hard alloy, an ink homogenizing mechanism 3 is arranged around the supporting station, and when the supporting member 2 is lifted and is positioned above the liquid level, a driving mechanism 4 drives the ink homogenizing mechanism 3 to homogenize the edge of the hard alloy.

Specifically, hold liquid graphite coating in the inking pond 1, a plurality of bearing stations of placing the carbide are gone up to the bearing piece 2, when bearing piece 2 is carried the carbide and is fallen below the liquid level of graphite coating, the carbide can be wrapped up completely to the coating, in order to realize the dip-coating processing to the carbide, after the dip-coating is accomplished, bearing piece 2 is carried the carbide again and rises above the liquid level of liquid graphite, make the liquid graphite in carbide and the inking pond 1 break away from, owing to even black mechanism 3 around outside the bearing station, so can avoid the carbide on the bearing station to drop, then utilize actuating mechanism 4 to drive a plurality of even rollers on even black mechanism 3 and roll even scribbling at the edge of carbide, carry out the roll-in to the unnecessary graphite coating of carbide edge, the graphite coating of roller even edge position, make the liquid graphite coating can even parcel outside the carbide, prevent that the carbide from influencing high temperature resistant performance because of surface graphite coating is uneven.

Compared with the prior art, the graphite coating device for hard alloy production provided by the embodiment of the invention has the advantages that the hard alloy is impregnated through the lifting support 2, when the hard alloy is impregnated, and the hard alloy rises above the liquid level, the driving mechanism 4 drives the ink homogenizing mechanism 3 to uniformly coat the edge part of the hard alloy in the support station in a surrounding manner, so that the residual redundant graphite coating on the edge of the hard alloy is avoided, the uneven graphite thickness of the edge part and the central part of the finished product after airing is prevented, and the surface heating uniformity of the hard alloy during sintering is ensured.

Further, actuating mechanism 4 is including installing in the transmission shaft 402 in the inking pond 1 outside and the first actuating unit that drive support 2 goes up and down, first actuating unit includes the connecting piece 403 with transmission shaft 402 threaded connection, the one end and the support 2 looks joint of connecting piece 403, specifically, transmission shaft 402 and motor 405 output shaft, motor 405 fixes in the both sides bottom of inking pond 1, the vertical side at inking pond 1 of transmission shaft 402 setting, connecting piece 403 traction support 2, the part at transmission shaft 402 top is equipped with the external screw thread, be equipped with on the connecting piece 403 with the internal screw thread of external screw thread matching, drive transmission shaft 402 rotation when motor 405, connecting piece 403 can go up and down, and then drive and connecting piece 403 connection fixed support 2 goes up and down together, make the carbide can sink into in the liquid graphite in the inking pond 1.

Further, actuating mechanism 4 still includes the second actuating unit, first actuating unit and second actuating unit synchronous motion, the second actuating unit is including installing the drive belt 404 on transmission shaft 402 and rotating the flexible external member 5 of installing in scribbling the inkpad 1, transmission shaft 402 passes through the flexible external member 5 rotation of drive belt 404 drive, concretely, main drive belt 404.1 is established on the band pulley 406 of transmission shaft 402, flexible external member 5 bottom runs through in the bottom of scribbling the inkpad 1, the junction of flexible external member 5 and scribbling the inkpad 1 matches and is equipped with the sealing member, flexible external member 5 bottom still fixedly connected with driving tooth 503, every row the driving tooth 503 is outer to be connected through same pair of drive belt 404.2 transmission, and a plurality of pair of drive belt 404.2 all is the toothed belt with main drive belt 404.1 transmission connection, main drive belt 404.1 and pair of drive belt 404.2 all are the toothed belt, transmission shaft 402 rotates when driving support 2 and goes up and down, can drive a plurality of flexible external member 5 synchronous rotation again.

Further, the top of flexible external member 5 runs through support 2 and peg graft and has driving disk 6, driving disk 6 is located the bearing station below, and driving disk 6 is arranged in driving a plurality of even rollers that scribble in the even black mechanism 3 and rotate, specifically, driving disk 6 and flexible external member 5 synchronous rotation, and driving disk 6 is located the below of bearing station, and the drive encircles each even black roller in the even black mechanism 3 all around of bearing station and rotate, evenly scribble the edge of carbide of placing on the bearing station, when bearing station is located the liquid level, it carries out even black to the edge of carbide to drive even black mechanism 3 through the rotation of driving disk 6, because driving disk 6 is inserted at flexible external member 5 top, driving disk 6 also can be further the lifting on flexible external member 5 promptly, the carbide of painting is accomplished in the convenient follow-up jack-up.

Specifically, the lifting of the supporting member 2 and the rotation of the driving disk 6 are generated by the rotation of the transmission shaft 402, namely, the supporting member 2 is in a rotating state in the ascending and descending process, the telescopic sleeve member 5 and the driving disk 6 are in opposite rotating directions, so that the supporting member 2 can always drive a plurality of ink homogenizing rollers in the ink homogenizing mechanism 3 to rotate in the first ascending stroke, the edge of the hard alloy can be uniformly coated in time after the hard alloy dip coating is finished, and the uniform coating effect is not good after the graphite coating is prevented from being dried and solidified.

Further, the telescopic sleeve 5 comprises an inner sleeve 501 penetrating through the bottom of the inking tank 1 and an outer sleeve 502 penetrating through the supporting member 2, the outer sleeve 502 and the inner sleeve 501 are mutually sleeved and synchronously rotate, a vibration assembly 7 is arranged between the outer sleeve 502 and the inner sleeve 501, when the outer sleeve 502 is lifted, the vibration assembly 7 intermittently impacts the driving disc 6 until the supporting member 2 is positioned above the liquid level, in particular, the outer sleeve 502 is nested on the supporting member 2 and synchronously lifted and lowered with the supporting member 2, the inner sleeve 501 is always positioned in the inking tank 1 and positioned below the liquid level of liquid graphite, the height of the inner sleeve 501 is fixed, when the supporting member 2 is lifted with the outer sleeve 502, the vibration assembly 7 high-frequency reciprocates to impact the driving disc 6, so that the driving disc 6 and the ink homogenizing mechanism 3 contacted with the driving disc 6 simultaneously vibrate, the vibration is transferred to the hard alloy placed on the bearing station, the diffusion speed of the hard alloy center paint to the edge is accelerated, the subsequent even coating effect is improved, the bearing piece 2 is in the first ascending stroke, the first ascending stroke is the process that the bearing piece 2 brings the hard alloy to separate from the liquid graphite, when the bearing piece 2 is lifted to be above the liquid level of the liquid graphite, the vibration that the hard alloy dip-coating is caused when the hard alloy dip-coating is finished leaving the liquid paint contained in the inking tank 1 can accelerate the diffusion speed of the excessive graphite paint from the top of the hard alloy to the edge, the ink homogenizing efficiency is improved, and when the bearing piece 2 starts in the second ascending stroke, the vibration component 7 can not continue to vibrate, and the second ascending stroke is the process that the bearing piece 2 continues to ascend from above the liquid level of the liquid graphite.

Further, the vibration assembly 7 comprises a baffle plate 701 fixedly arranged in the outer sleeve 502, wherein two sides of the bottom of the baffle plate 701 are elastically hinged with a deflector rod 702, two sides of the inner wall of the inner sleeve 501 are fixedly connected with a rack 703, the bottom of the deflector rod 702 is provided with a boss 704 which is overlapped on the rack 703, a push rod 705 penetrating through the baffle plate 701 is hinged between the two deflector rods 702, the top of the push rod 705 is abutted with the driving disc 6, in particular, a torsion spring is arranged on a hinge shaft between the deflector rod 702 and the baffle plate 701, the two deflector rods 702 are outwards opened under the action of the elasticity of the torsion spring, so that the boss 704 on the deflector rod 702 can tightly abut against the rack 703, and as the rack 703 is provided with a plurality of bosses which are distributed at intervals, when the boss 704 on the deflector rod 702 abuts against the boss of the rack 703, the two deflector rods 702 are mutually close, and the push rod 705 is pushed to rise by the hinge rod 708 connected between the deflector rods 702 and the push rod 705, when the top of the push rod 705 is propped against the driving disc 6, when the protruding part 704 on the deflector rod 702 is propped against the concave part between the adjacent protrusions on the rack 703, the two deflector rods 702 are separated, the deflector rod 702 is pulled by the deflector rods 702 to descend so as to separate the deflector rods from the driving disc 6, because the deflector rods 702 are fixed in the outer sleeve 502 and the rack 703 is fixed in the inner sleeve 501, when the support member 2 drives the outer sleeve 502 to ascend and descend, the protruding part 704 on the deflector rods 702 are sequentially overlapped with the protruding part and the concave part on the rack 703, so that the deflector rods 705 can quickly impact the driving disc 6, the excessive graphite paint on the hard alloy is vibrated by the generated vibration, the excessive graphite paint is quickly diffused towards the edge, the processing efficiency is accelerated, when the support member 2 is continuously ascended from the upper part of the liquid graphite liquid level, the protruding part 704 on the deflector rods 702 are separated from the whole rack 703, and when the outer sleeve 502 is not rotated any more, the vibration cannot be generated at this time, the stability of the drive disk 6 when it is further raised is improved.

Further, even black mechanism 3 includes rotating turret 301 and annular array distributes horizontal even black roller 302 and vertical even black roller 303 on rotating turret 301, rotating turret 301 rotates and connects on bearing piece 2, the elasticity is pegged graft in the horizontal even black roller 302 has actuating lever 305, actuating lever 305 one end fixedly connected with conical friction wheel 308, driving plate 6 edge is equipped with the toper transmission portion 601 that is connected with conical friction wheel 308 transmission, specifically, in bearing piece 2's first ascending stroke, the conical transmission portion 601 top surface on driving plate 6 is all the time with conical friction wheel 308 friction transmission, drive a plurality of horizontal even black rollers 302 roll even black in carbide bottom border position, horizontal even black roller 302's roll can let whole rotating turret 301 rotate along bearing station's center, make a plurality of vertical even black roller 303 evenly coat the edge portion of carbide simultaneously, a plurality of horizontal even black roller 302 and a plurality of vertical even roller 303 cooperate the edge of carbide, can remove unnecessary graphite coating on the carbide after the dip-coating, let graphite coated more even, can guarantee the roll coating of carbide on the surface of carbide when the edge of carbide is incomplete, it is covered completely, the roll-coated completely.

Further, an ejector mechanism 8 is installed in the outer sleeve 502, when the supporting member 2 is above the liquid level, the ejector mechanism 8 drives the push rod 705 to eject the driving disk 6 to the supporting station, specifically, in the second lifting stroke of the supporting member 2, the ejector mechanism 8 gradually ejects the driving disk 6 until the whole driving mechanism 4 stops working after the driving disk 6 ejects the supporting station, the driving disk 6 is used for holding up the cemented carbide after the leveling coating, the cemented carbide is conveniently taken out from the inking tank 1 by a worker or a corresponding material taking mechanism, when the driving disk 6 is ejected, the conical driving part 601 at the edge of the driving disk 6 can prop against the inclined plane of the conical friction wheel 308, so that the driving rod 305 gradually moves into the transverse ink leveling roller 302, when the driving rod 305 completely enters the transverse ink leveling roller 302, the position of the conical friction wheel 308 is adjusted to the outer side of the conical driving part 601, avoid the further lifting of the transmission disc 6, when the transmission disc 6 is completely lifted or completely lowered, the spring on the driving rod 305 for connecting the inner cavity wall of the transverse ink homogenizing roller 302 applies acting force to the driving rod 305, the inner cavity of the transverse ink homogenizing roller 302 is provided with a groove, the driving rod 305 is provided with a convex block clamped in the groove, so that the conical friction wheel 308 is stably reset, the transmission disc 6 can continue to drive the transverse ink homogenizing roller 302 after lifting, the continuous operation is convenient, the two sides of the inner wall of the outer sleeve 502 are vertically provided with guide grooves 504, the bottom of the transmission disc 6 and the two sides of the inner sleeve 501 are fixedly connected with limit rods 505 matched with the guide grooves 504, the transmission disc 6 and the outer sleeve 502 are more stable in the lifting process, hard alloy is prevented from falling from the bearing station due to the deviation, allowing both to always rotate in synchronism with the inner sleeve 501.

Further, the ejection mechanism 8 comprises a main cylinder 801 fixed on the top of the partition 701 and a sub-cylinder 802 positioned on two sides of the main cylinder 801 and communicated with the main cylinder 801, the communication holes of the ejection mechanism are positioned at the lowest part of the two sides of the main cylinder 801, a push rod 705 penetrates through the main cylinder 801, a first piston plate 706 is arranged in the main cylinder 801 by the push rod 705, a second piston plate 803 is arranged in the sub-cylinder 802, a bracket 804 penetrating through the top of the sub-cylinder 802 is fixedly connected to the top of the second piston plate 803, pull rods 805 penetrating through the partition 701 and the bracket 804 are fixedly connected to the two sides of the top of the inner sleeve 501, a limiting block 806 is fixedly connected to the top of the bracket 804, specifically, an air cavity in the main cylinder 801 and an air cavity in the sub-cylinder 802 are communicated together, when the supporting member 2 is positioned in a first lifting stroke, the limiting block 806 on the pull rod 805 is always positioned above the bracket 804, at this time, the driving disk 6 is always located at the top of the outer sleeve 502, when the bearing member 2 reaches the second lifting stroke and continues to lift, due to the change of the height of the bracket 804, after the limiting block 806 abuts against the bracket 804, the bracket 804 can be limited, so that when the outer sleeve 502 lifts, the air cavity in the auxiliary air cylinder 802 becomes smaller, the air in the auxiliary air cylinder 802 enters the main air cylinder 801 through the communication hole, and then the pushing rod 705 is pushed by the lifting of the first piston plate 706, the driving disk 6 is lifted by the pushing rod 705, the driving disk 6 is lifted to the upper side of the outer sleeve 502, the cemented carbide after being uniformly coated is lifted, the cemented carbide is conveniently taken out from the bearing station, in the second lifting stroke, the protruding part 704 on the deflector 702 in the vibrating assembly 7 is completely separated from the whole rack 703, the vibrating assembly 7 stops vibrating when the driving disk 6 lifts further, the stability of the drive disk 6 in lifting the hard alloy is improved.

More specifically, the push rod 705 is provided with a through slot 709 matched with the ejection mechanism 8, the ends of the two hinging rods 708 are hinged together, the hinging point of the two hinging rods 708 is positioned in the through slot 709, when the transmission disc 6 is abutted with the outer sleeve 502, the hinging point of the two hinging rods is abutted against the upper inner wall of the through slot 709, when the push rod 705 gradually jacks up the transmission disc 6, the hinging point of the two hinging rods 709 is gradually positioned in the lower area of the through slot 709 due to the upward movement of the through slot 709, the through slot 709 is formed in the push rod 705, the vibration component 7 is not influenced to push the push rod 705 to vibrate, the ejection mechanism 8 is enabled to push the push rod 705 more smoothly, and the transmission disc 6 is ejected more stably.

Further, a restoring member 9 is installed between the main cylinder 801 and the driving disc 6, specifically, the restoring member 9 is a tension spring, and is used for connecting the outer sleeve 502 and the driving disc 6, when the bearing member 2 descends to return to the first lifting stroke, the limiting block 806 does not abut against the bracket 804 to limit the movement of the second piston plate 803, so that the first piston plate 706 in the main cylinder 801 can move up and down freely with the push rod 705, and at this time, the driving disc 6 can be easily pulled back to the top of the outer sleeve 502 through the tension spring, namely, the lower part of the bearing station, so that other hard alloys to be dip-coated can be conveniently and continuously placed.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.

Claims

1. Graphite coating device for hard alloy production, including scribbling ink pond (1), its characterized in that still includes:

the supporting piece (2) is arranged in the inking tank (1) in a lifting manner, a supporting station for placing hard alloy is arranged on the supporting piece, the ink homogenizing mechanism (3) is arranged around the supporting station, the driving mechanism (4) drives the ink homogenizing mechanism (3) to homogenize the edge of the hard alloy when the supporting station is positioned above the liquid level;

the driving mechanism (4) comprises a transmission shaft (402) and a first driving unit which are arranged outside the inking tank (1), the first driving unit comprises a connecting piece (403) which is in threaded connection with the transmission shaft (402), one end of the connecting piece (403) is clamped with the supporting piece (2), the driving mechanism (4) further comprises a second driving unit, the second driving unit comprises a transmission belt (404) arranged on the transmission shaft (402) and a telescopic sleeve (5) which is rotatably arranged in the inking tank (1), the transmission shaft (402) drives the telescopic sleeve (5) to rotate through the transmission belt (404), the top of the telescopic sleeve (5) penetrates through the supporting piece (2) and is inserted with a transmission disc (6), the transmission disc (6) is positioned below a supporting station, the transmission disc (6) is used for driving the ink homogenizing mechanism (3) to rotate, the telescopic sleeve (5) comprises an inner sleeve (501) penetrating through the bottom of the inking tank (1) and an outer sleeve (502) penetrating through the supporting piece (2), and the inner sleeve (501) and the inner sleeve (502) are mutually synchronous with each other.

2. The graphite coating device for hard alloy production according to claim 1, wherein a vibration component (7) is arranged between the outer sleeve (502) and the inner sleeve (501), when the outer sleeve (502) is lifted, the vibration component (7) intermittently impacts the transmission disc (6) until the bearing piece is above the liquid level, the vibration component (7) comprises a partition plate (701) fixedly arranged in the outer sleeve (502), deflector rods (702) are elastically hinged to two sides of the bottom of the partition plate (701), racks (703) are fixedly connected to two sides of the inner wall of the inner sleeve (501), protruding parts (704) which are lapped on the racks (703) are arranged at the bottoms of the deflector rods (702), push rods (705) penetrating through the partition plate (701) are hinged between the two deflector rods (702), and the tops of the push rods (705) are abutted to the transmission disc (6).

3. The graphite coating device for hard alloy production according to claim 1, wherein the ink homogenizing mechanism (3) comprises a rotating frame (301) and transverse ink homogenizing rollers (302) and vertical ink homogenizing rollers (303) distributed on the rotating frame (301) in a ring-shaped array, a driving rod (305) is elastically inserted in the transverse ink homogenizing rollers (302), one end of the driving rod (305) is fixedly connected with a conical friction wheel (308), and a conical transmission part (601) in transmission connection with the conical friction wheel (308) is arranged at the edge of the transmission disc (6).

4. The graphite coating device for hard alloy production according to claim 2, wherein an ejection mechanism (8) is installed in the outer sleeve (502), when the bearing station is above the liquid level, the ejection mechanism (8) can drive the push rod (705) to eject the driving disc (6) out of the bearing station after the bearing station is above the liquid level, the ejection mechanism (8) comprises a main cylinder (801) fixed at the top of the partition plate (701) and auxiliary cylinders (802) which are positioned at two sides of the main cylinder (801) and are communicated with the main cylinder, the push rod (705) penetrates through the main cylinder (801), a first piston plate (706) is installed in the main cylinder (801) by the push rod (705), a second piston plate (803) is installed in the auxiliary cylinder (802), a bracket (804) penetrating through the top of the auxiliary cylinder (802) is fixedly connected to the top of the second piston plate (803), pull rods (805) penetrating through the partition plate (701) and the bracket (804) are fixedly connected to two sides of the top of the inner sleeve (501), and the top of the bracket (806) is fixedly connected with a limiting block (806).

5. A graphite coating device for cemented carbide production according to claim 4, characterized in that a reset element (9) is mounted between the master cylinder (801) and the drive disc (6).