CN212708194U

CN212708194U - Carbon brush forming equipment

Info

Publication number: CN212708194U
Application number: CN202020521576.3U
Authority: CN
Inventors: 连小杰; 徐照芳; 竺际耀
Original assignee: SHANGHAI MORGAN CARBON CO Ltd
Current assignee: SHANGHAI MORGAN CARBON CO Ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2021-03-16
Anticipated expiration: 2030-04-10

Abstract

The utility model discloses carbon brush forming equipment, which relates to the field of automatic equipment and comprises a powder feeding mechanism and a material pressing mechanism; the powder feeding mechanism comprises a hopper, a discharging pipe, a material cavity, a motor and a feeding arm; an output shaft of the motor is connected with the feeding arm, and the material cavity reciprocates along the feeding arm through the driving of the motor; the material pressing mechanism comprises an upper pressing head, a middle die and a lower pulling plate; the upper pressure head is matched with the lower pull plate to compact carbon powder in a pressing cavity arranged on the middle die, the top surface and the bottom surface of the middle die are respectively provided with a first guide column and a second guide column in a normal direction, and the upper pressure head reciprocates along the first guide column; the lower pulling plate reciprocates along the second guide post; the other end of the second guide pillar is also connected with a bearing plate, the bearing plate can move, and the moving direction of the bearing plate is parallel to the extending direction of the second guide pillar. The utility model discloses can promote the quality of finished product carbon brush, reduce the thickness tolerance fluctuation of carbon brush, still can practice thrift raw and other materials, increase efficiency.

Description

Carbon brush forming equipment

Technical Field

The utility model relates to an automatic equipment field especially relates to a carbon brush former.

Background

At present, in the carbon brush manufacturing process, a feeding hopper of carbon powder is usually hung at any position of a machine body in a separated mode from the machine body, and the carbon powder mainly falls into a mold through self weight. In addition, the technical scheme is that a transmission mechanism is added at the feeding port of the hopper to enable the feeding port to shake repeatedly so as to accelerate the falling of the carbon powder. However, in the process of shaking the charging opening, carbon powder particles with relatively high density in the hopper are deposited at the bottom of the hopper under the influence of gravity, and layering is generated, so that carbon powder is unevenly distributed, and the uniformity of the thickness of a carbon brush product is influenced. In addition, in the above process, the carbon powder material is easy to fly, uneven or scattered when being fed into the die, which results in poor powder forming effect, large size fluctuation, waste of raw materials, high defective rate and increased mass production cost.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that a carbon brush former that eliminates the powder layering, the pay-off is even not wasted is provided.

In order to achieve the purpose, the utility model provides carbon brush forming equipment, which comprises a powder feeding mechanism and a material pressing mechanism; the powder feeding mechanism comprises a hopper, a discharging pipe, a material cavity, a motor and a feeding arm; the discharging pipe is connected with the discharging port of the hopper and the feeding port of the material cavity, the output shaft of the motor is connected with the feeding arm, and the material cavity is driven by the motor to reciprocate along the feeding arm; the material pressing mechanism comprises an upper pressing head, a middle die and a lower pulling plate; the upper pressure head is arranged above the middle die and comprises a material pressing pile arranged towards the middle die; the middle die comprises a material pressing cavity corresponding to the position of the material pressing pile, and the material cavity is positioned above the material pressing cavity; the lower pulling plate is arranged below the middle die; a first guide post and a second guide post are respectively arranged on the top surface and the bottom surface of the middle die in a normal direction, and the upper pressure head reciprocates along the first guide post; the lower pulling plate is displaced in a reciprocating manner along the second guide pillar; the other end of the second guide pillar is further connected with a bearing plate, the bearing plate is connected with a driving device, the bearing plate is displaced through the driving device, and the displacement direction of the bearing plate is parallel to the extending direction of the second guide pillar.

Further, still include: the upper pressure head locking block is positioned at a contact point of the upper pressure head and the first guide pillar, and the lower pull plate locking block is positioned at a contact point of the lower pull plate locking block and the second guide pillar.

Further, the hopper comprises a fixing piece, and the hopper is fixed on the machine body of the carbon brush forming equipment through the fixing piece.

Furthermore, the material pressing piles, the material pressing cavity and the material pressing supporting points are multiple and correspond to one another.

Further, the motor is a servo motor.

Furthermore, the lower pulling plate further comprises a material pressing fulcrum arranged towards the middle die, and the position of the material pressing fulcrum corresponds to the position of the material pressing cavity.

Furthermore, the middle die periphery includes that the fixed backup pad is established to the cover, first guide pillar set up in the backup pad.

The technical effects of the utility model reside in that: 1) the quality of the finished carbon brush is improved, and the thickness tolerance fluctuation of the carbon brush is reduced to +/-0.03 mm from the original +/-0.1 mm; 2) the efficiency is improved by about 33.3 percent from the original efficiency; 3) the carbon powder raw material powder is saved by about 5 percent compared with the prior art.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

fig. 1 is a schematic structural view of a feeding mechanism according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a material pressing mechanism according to an embodiment of the present invention;

fig. 3 is a sectional view of the pressing mechanism according to an embodiment of the present invention.

Description of reference numerals: 1-a feeding mechanism; 11-a hopper; 110-a fixture; 12-a blanking pipe; 13-a material cavity; 14-a motor; 15-a feeding arm; 2-a material pressing mechanism; 21-an upper pressure head; 210-upper ram locking block 211-swage pile; 22-middle mold; 220-a pressing cavity; 23-a pull-down plate; 230-lower platen lock block; 231-pressing supporting points; 24-a first guide post; 25-a second guide post; 26-a carrier plate; 27-support plate.

Detailed Description

The technical contents of the preferred embodiments of the present invention will be more clearly understood and appreciated by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments, and the scope of the invention is not limited to the embodiments described herein.

In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.

Fig. 1 shows a schematic structural diagram of a powder feeding mechanism 1 of a carbon brush molding apparatus in the present invention, wherein the powder feeding mechanism 1 includes a hopper 11, a blanking pipe 12, a material cavity 13, a motor 14 and a feeding arm 15. The blanking pipe 12 is connected with a discharge hole of the hopper 11 and a feed hole of the material cavity 13, an output shaft of the motor 14 is connected with the feeding arm 15, and the material cavity 13 is driven by the motor 14 to reciprocate along the feeding arm 15.

The hopper 11 is used for loading carbon powder, the carbon powder enters the material cavity 13 along the blanking pipe 12 under the action of gravity, the material cavity 13 is positioned above the material pressing cavity 220 of the middle die 22 of the material pressing mechanism 2, and the carbon powder is guided into the middle die 22 to enter a carbon brush pressing stage. In the case where a plurality of molds are simultaneously included in the intermediate mold 22, the cavity 13 can be reciprocated by the feed arm 15 to feed carbon powder to the plurality of molds, respectively. Of course, if there is only a single mold of the middle mold 22, the cavity 13 is also moved to a position away from the middle mold 22 to perform the carbon brush pressing process.

Fig. 2 and fig. 3 show the structural schematic diagram of the material pressing mechanism 2 of the middle carbon brush forming device of the present invention, and the material pressing mechanism 2 includes an upper pressing head 21, a middle mold 22 and a lower pulling plate 23. The upper ram 21 is disposed above the middle mold 22, and the upper ram 21 includes a swaging pile 211 disposed toward the middle mold 22. The middle die 22 is connected with the material cavity 13, and the middle die 22 comprises a material pressing cavity 220 corresponding to the position of the material pressing pile. A pull-down plate 23 is disposed below the middle mold 22. A first guide post 24 and a second guide post 25 are arranged in the plane normal direction of the middle die 22, the upper press head 21 reciprocates along the first guide post 24, and the lower pull plate 23 reciprocates along the second guide post 25. The other end of the second guide post 25 is further connected with a bearing plate 26, the bearing plate 26 is connected with a driving device, the bearing plate 26 is displaced by the driving device, and the displacement direction of the bearing plate 26 is parallel to the extending direction of the second guide post 25.

The upper and lower parts of the middle mold 22 comprise an upper pressing head 21 and a lower pressing plate 23, the upper pressing head 21 comprises a pressing pile 211 which can extend into the middle mold 22, and carbon powder is pressed in a pressing cavity 220, during pressing, the lower pressing plate 23 applies a force opposite to the force application direction of the pressing pile 211 to abut against the pressing cavity 220 so as to compact the carbon powder and prevent the pressing cavity 220 from deforming. Thereby, the first guide post 24 and the second guide post 25 are provided above and below the normal direction of the middle mold 22, respectively, so that the upper ram 21 and the lower platen 23 are displaced above and below the middle mold 22. For example, during the feeding process, the upper ram 21 and the lower ram 23 are located away from the middle mold 22 along the first guide post 24 and the second guide post 25, respectively, to leave enough space for facilitating the feeding of the middle mold 22. After the feeding is finished, the upper press head 21 and the lower press head 22 respectively move along the first guide post 24 and the second guide post 25, and the carbon powder in the middle mold 22 is compacted. In addition, because there is certain difference in height in material chamber 13 and the material pressing chamber 220 during feeding, and during the result of the feeding carbon powder can't get into the material pressing chamber 220 evenly, lead to not closely knit and produce the hole between the carbon powder in the pressing process, therefore optionally set up bearing board 26 at the other end of second guide pillar 25 and well mould 22 link, bearing board 26 has drive arrangement, drive arrangement can apply reciprocal small segment displacement to bearing board 26, because second guide pillar 25 has connected well mould 22 and bearing board 26, consequently bearing board 26 can drive well mould 22 and shake from top to bottom, make the carbon powder in the feeding process even, increase the carbon powder compactness in the pressing process. And because the shaking mode is changed from the shaking feeding mechanism 1 to the shaking middle die 22, the defects that carbon powder flies or extra carbon powder falls outside the middle die 22 and the like are avoided, and the raw material cost is further reduced.

The number of the first guide posts 24 and the second guide posts 25 can be determined according to actual conditions, and it is only necessary that the first guide posts 24 and the second guide posts 25 can stably support the upper pressing head 21 and the lower pull plate 23 and enable the upper tower head and the lower pull plate 23 to stably move along the upper pressing head and the lower pull plate. The displacement generated by the upper ram 21 and the lower platen 23 may be driven by any driving means and is not further limited herein.

Further, still include: an upper ram locking block 210 and a lower plate locking block 230, the upper ram locking block 210 being located at the contact point of the upper ram 21 and the first guide post 24, and the lower plate locking block 230 being located at the contact point of the lower plate 23 and the second guide post 25.

In the process of the up-and-down shaking of the bearing plate 26, the situation that the upper pressing head 21 and the lower pulling plate 23 shake together with the upper pressing head 21 may occur, so that the upper pressing head locking block 210 and the lower pulling plate locking block 230 are respectively additionally arranged on the upper pressing head 21 and the lower pulling plate 23, when the bearing plate 26 shakes, the upper pressing head locking block 210 and the lower pulling plate locking block 230 can respectively lock the upper pressing head 21 and the lower pulling plate 23 on the first guide pillar 24 and the second guide pillar 25, and the upper pressing head 21 and the lower pulling plate 23 are prevented from shaking together with the bearing plate 26.

Further, the hopper 11 comprises a fixing part 110, and the hopper 11 is fixed on the machine body of the carbon brush forming equipment through the fixing part 110, so that the situation that powder with high density is layered due to mechanical vibration randomly generated in the feeding and pressing processes is avoided, and the situation that feeding is not uniform is avoided. According to the result of finished product measurement by the micrometer, the fixed hopper 11 can control the thickness tolerance within plus or minus 0.03mm, and the thickness fluctuation of plus or minus 0.1mm before improvement has a great improvement effect.

Further, the lower pulling plate 23 further includes a pressing fulcrum 231 corresponding to the position of the pressing pile 211. Because the force tending to the middle of the lower pull plate 23 is smaller than that tending to the two sides, the lower pull plate 23 may be bent and deformed in the pressing process, the material pressing fulcrum 211 corresponding to the position of the material pressing pile 211 can be introduced, the reaction force exerted by the lower pull plate 23 on the material pressing pile 211 is further enhanced, and the material pressing fulcrum 211 can be disassembled and assembled as required and the height can be adjusted.

Further, the pressing piles 211, the pressing cavity 220, and the pressing fulcrums 231 are plural and correspond to one another. This increases the number of carbon brushes that can be pressed simultaneously, and increases the throughput.

Further, the motor 14 is a servo motor. The servo motor can convert a voltage signal into torque and a rotating speed to drive a control object, so that the speed and the position accuracy are accurately controlled, and the position accuracy of the material pressing pile 211 in the pressing process is improved.

Further, the middle mold 22 further includes a supporting plate 27 sleeved on the outer periphery thereof, and the first guide post 24 is disposed on the supporting plate 27.

The support plate 27 is fit-fixed to the outer periphery of the intermediate mold 22 and is separated from the intermediate mold 22. The supporting plate 27 supports the first guide post 24 and the upper pressing head 21 which moves up and down along the first guide post 24, so that all the functions are achieved, meanwhile, as the supporting plate 27 is separated from the middle mold 22, in the process that the middle mold 22 is driven by the second guide post 25 to shake up and down, the first guide post 24 and the upper pressing head 21 cannot shake together with the middle mold 22, the weight required to be overcome during shaking is reduced, the shaking frequency can be further increased, the amplitude can be reduced, and carbon powder is more uniform in the pressing cavity 220.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. A carbon brush forming device is characterized by comprising a powder feeding mechanism and a material pressing mechanism;

the powder feeding mechanism comprises a hopper, a discharging pipe, a material cavity, a motor and a feeding arm; the discharging pipe is connected with the discharging port of the hopper and the feeding port of the material cavity, the output shaft of the motor is connected with the feeding arm, and the material cavity is driven by the motor to reciprocate along the feeding arm;

the material pressing mechanism comprises an upper pressing head, a middle die and a lower pulling plate; the upper pressure head is arranged above the middle die and comprises a material pressing pile arranged towards the middle die; the middle die comprises a material pressing cavity corresponding to the position of the material pressing pile, and the material cavity is positioned above the material pressing cavity; the lower pulling plate is arranged below the middle die; a first guide post and a second guide post are respectively arranged on the top surface and the bottom surface of the middle die in a normal direction, and the upper pressure head reciprocates along the first guide post; the lower pulling plate is displaced in a reciprocating manner along the second guide pillar;

the other end of the second guide pillar is further connected with a bearing plate, the bearing plate is connected with a driving device, the bearing plate is displaced through the driving device, and the displacement direction of the bearing plate is parallel to the extending direction of the second guide pillar.

2. The carbon brush molding apparatus as claimed in claim 1, further comprising: the upper pressure head locking block is positioned at a contact point of the upper pressure head and the first guide pillar, and the lower pull plate locking block is positioned at a contact point of the lower pull plate locking block and the second guide pillar.

3. The carbon brush molding apparatus according to claim 1, wherein the hopper includes a fixing member, and the hopper is fixed to a body of the carbon brush molding apparatus by the fixing member.

4. The carbon brush forming equipment according to claim 1, wherein the pressing piles and the pressing cavities are in one-to-one correspondence.

5. The carbon brush molding apparatus according to claim 1, wherein the motor is a servo motor.

6. The carbon brush molding apparatus according to claim 1, wherein the lower pulling plate further includes a pressing fulcrum disposed toward the middle mold, and a position of the pressing fulcrum corresponds to a position of the pressing cavity.

7. The carbon brush forming apparatus of claim 1, wherein an outer circumference of the middle mold includes a support plate fixedly fitted thereon, and the first guide post is disposed on the support plate.