JPH04315568A - Burr removing device of brush for electric machinery - Google Patents

Abstract

PURPOSE:To provide a burr removing device of a brush for electric machinery having no fear to generate a rejected article by the burr removing operation and capable of performing the operation in a short time without manual operation. CONSTITUTION:A shieve 46 receiving a brush B with burr is provided oscillatably in the horizontal direction along a guide rail 13. The brush B with burr is charged from a hopper 71 to the shieve 46. The shieve 46 is oscillated in the horizontal direction with a motor 32 to remove burr from the brush B. The burr shieved with the shieve 46 is received with a burr receiving vessel, and sucked and discharged. The brush B from which burr is removed is taken out by inclining the shieve 46 by operating a rotary actuator 51.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a deburring device for brushes for electrical machinery, and more specifically, brushes for electrical machinery that are attached to commutators or slip rings of generators, electric motors, etc. to perform rectification and current collection functions. This invention relates to a deburring device.

0002

2. Description of the Related Art Conventionally, the process of removing burrs from microbrushes for electrical appliances has generally been carried out as follows. First, the fired and shaped microbrushes are put into a can that is swung up and down by a motor, and the lid is placed on the can. Friction between the inner wall of the can and
Remove burrs by collision. Next, the lid of the can is opened, the microbrushes inside are transferred to a sieve along with the burrs, and the burrs are separated from the microbrushes by being vibrated to cause the burrs to fall.

0003

[Problem to be solved by the invention] In the above conventional method,
When a microbrush made by firing and molding is placed in a can, excess raw material powder gets into the can together with the microbrush, and when the can is rocked up and down to remove burrs, the raw powder is There is a problem that the microbrush may adhere to the microbrush. Since the attached raw material powder cannot be removed, the microbrush becomes a defective product.

[0004] Furthermore, the worker has to put a predetermined amount of microbrushes into a can, remove burrs, and sieve the deburred microbrushes from burrs and raw material powder, which requires manpower. However, there is also the problem that the time required for the work becomes longer.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an apparatus for removing burrs from brushes for electrical appliances, which eliminates the risk of producing defective products due to deburring work, and which can perform the deburring work in a short time without using human hands. be.

[0006]

[Means for Solving the Problems] The apparatus for deburring electrical brushes of the present invention includes a horizontally swingable sieve means for accommodating a brush with burrs, and a horizontally swingable sieve means for accommodating a burred brush. a swinging means for removing burrs from the brushes housed in the sieving means, a burr discharging means for discharging the burrs screened out from the sieving means, and a brush removal means for taking out the brushes from which the burrs have been removed from the sieving means. It is characterized by comprising the following.

[0007]

[Function] In the electrical brush deburring device of this invention,
Since the brush raw material powder that has entered the sieving means together with the burred brush is sieved off during rocking, there is no possibility that the brush raw material powder will adhere to the brush during the deburring operation. Therefore, defective products will not be produced during deburring work.

Furthermore, even if the brush raw material powder enters the sieve means together with the brush, the brush raw material powder is sieved off while the sieve means is rocked to remove burrs, and is discharged together with the burrs by the burr discharge means. Ru. The brush that has been deburred is
The brush is taken out into a container such as a basket by the brush removal means. This eliminates the need for manpower for the deburring work and shortens the time required for the work.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that this invention is not limited to this.

(Structure) FIG. 1 is a side view showing an embodiment in which the electrical brush deburring device of the present invention is applied to an electrical micro brush deburring device, and FIG. 2 is a front view thereof.
FIG. 3 is a plan view thereof.

The microbrush deburring device 1 includes a support stand 10, a sieve swinging section 20 provided on the support stand 10, and a sieve swinging section 20 provided on the support stand 10, and a sieve swinging section 20 provided on the support stand 10. a sieve assembly 40 that is swung, a brush take-out section 50 that takes out the deburred microbrush B from the sieve assembly 40, a burr discharge section 60 that discharges the burrs screened from the sieve assembly 40 to the outside; The sieve assembly 40 is provided with a brush supply section 70 that supplies microbrushes B with burrs to the sieve assembly 40.

The support stand 10 has two support plates 12 arranged and fixed in parallel to each other on a substrate 11.
A guide rail 13 is horizontally attached to the upper end of each of the guide rails 2 by bolts 14. Rollers 43 of the sieve assembly 40 are engaged with both guide rails 13, and as the rollers 43 roll along both guide rails 13, the sieve assembly 40 swings horizontally. The two support plates 12 to which the guide rails 13 are attached are
A through hole 12a is provided (see FIG. 2).

The sieve swinging unit 20 includes a rotating shaft 22 supported by a support column 21 erected on the substrate 11 and a rotating shaft 22
a crank 24 and a connecting rod 28 that transmit the rotation of the rotating shaft 22 to the sieve assembly 40;
It is equipped with

The motor 32 is fixed on the support plate 11 by a motor stand 33, and the main shaft 34 of the motor 32 is connected to the rotating shaft 22 via a shaft coupling 35. Rotating axis 2
A flange 23 is fixed to the end of the motor 2 opposite to the motor 32, and the crank 24 is bolted to this flange 23.

As clearly shown in FIG. 2, the crank 24 has a groove 24a for adjusting the swing width in the longitudinal direction, and a plurality of screw holes 24b are arranged in parallel in the groove 24a. It has been done. An engaging piece 25 is engaged with the groove 24a, and the engaging piece 25 is fixed with a fixing bolt 26. The sieve assembly 4 is moved by moving the engagement piece 25 along the groove 24a and screwing the fixing bolt 26 into a different screw hole 24b.
The swing width of 0 can be adjusted. The engagement piece 25 is provided with a long hole 25a, and the connecting rod 28 is inserted into the long hole 25a.
A pin 27 attached to one end of is slidably engaged. A pin 29 attached to the other end of the connecting rod 28 is engaged near the lower end of the connecting protrusion 30. The upper end of the connecting protrusion 30 is fixed to the swing plate 41 of the sieve assembly 40 by bolts 31.

When the main shaft 34 of the motor 32 rotates, the rotating shaft 22 rotates in the same direction, and the crank 24 also rotates in the same direction. This rotation is converted into reciprocating motion by the crank 24 and the connecting rod 28 and transmitted to the rocking plate 41.

The sieve assembly 40 has a flat rocking plate 41 provided to close the space between two support plates 12 fixed on the support plate 11. Four rollers 43 are attached below the swing plate 41 with bolts 42. Each of these rollers 43 has a V-shaped groove. The two rollers 43 are engaged with one of the two guide rails 13 provided on the support base 10, and the other two rollers 43 are engaged with the other guide rail 13. As each roller 43 rolls, the swing plate 41 can move in the horizontal direction.

A sieve mounting plate 45 is mounted above the swing plate 41 via a connecting cylinder 44 having a circular cross section. A cylindrical sieve 46 is removably attached to the upper surface of this sieve mounting plate 45. This sieve 46 is constructed by attaching a stainless steel mesh 46a to the lower end of a metal cylindrical portion 46b. Further, the sieve 46 is fixed by two sieve fixing members consisting of a hook tightening lever 48 fixed to the sieve mounting plate 45 via a lever fixing piece 47 and a hook 49 that is hooked to the upper edge of the sieve 46. be. When fixing the sieve 46, place the sieve 46 on the sieve mounting plate 45 and then attach the hook 4 to the upper edge of the sieve 46.
9 and then rotate the hook tightening lever 48. When removing the sieve 46, the operation performed when fixing the sieve 46 may be reversed.

The sieve mounting plate 45 has a through hole (not shown) directly below the sieve 46, and the swing plate 41 has a through hole (not shown) located directly below the sieve 46.
It has a through hole (not shown) right below the hole 4. Then, the burrs removed from the microbrush B by the sieve 46 pass through the through holes in the sieve mounting plate 45 to reach the inside of the connecting tube 44, and further fall through the through holes in the swing plate 41. .

The brush removal section 50 is equipped with an electric rotary actuator 51 fixed on the swing plate 41, and the rotary actuator 51 rotates the sieve 46 to the removal position shown by the chain line in FIG. It functions to tilt the microbrush B therein and transfer it to a basket (not shown). The rotary actuator 51 has its main shaft 5
2 is fixed substantially parallel to the guide rail 13.

The rotating shaft 55 is supported by two support pieces 54 fixed on the rocking plate 41, and is connected to the main shaft 52 of the rotary actuator 51 through a shaft joint 53. Further, the rotating shaft 55 is connected to the sieve mounting plate 45 through a substantially cylindrical connecting piece 56 . When the main shaft 52 of the rotary actuator 51 rotates, the sieve mounting plate 45 rotates around the rotating shaft 55, and therefore the sieve mounting plate 45 rotates.
The sieve 46 attached to the sieve 46 also rotates in the same manner. In addition, the support piece 5
A chute 57 is provided near the sieve 46 to ensure that the microbrushes B in the sieve 46 are transferred to the basket (
(see Figure 1).

The burr discharge section 60 is equipped with a burr receiving container 61 with an open top surface, which is installed between two supporting plates 12 and directly below the swing plate 41. It is designed to catch falling burrs and brush raw material powder. A suction duct 62 is connected to the burr receiving container 61, and the received burrs and brush raw material powder are sucked by a suction fan (not shown).
Ejected immediately.

The brush supply section 70 has a rotary press chute 72 provided diagonally above the sieve 46, and a hopper 71 rotatably attached to the tip of the chute 72 (see FIG. 1). The hopper 71 is rotatable from a supply position shown by a solid line in FIG. 1 to a standby position shown by a chain line.

The hopper 71 stops at a standby position for a predetermined period of time to collect therein the microbrushes B supplied from the chute 72 of the rotary press, and when the predetermined period of time has elapsed, it rotates to the supply position and collects the stored microbrushes. Sieve brush B 4
Add it to 6. After turning on, it immediately returns to the standby position. Since the microbrushes B are periodically supplied from the chute 72 of the rotary press, the microbrushes B are stored in the hopper 71 again. Meanwhile, the sieve 46 swings during this period to deburr the microbrush B. Then, when the deburring of the microbrush B is completed, the hopper 71 rotates again to the supply position and throws the microbrush B into the sieve 46. In this way, a constant amount of microbrushes B is always supplied into the sieve 46.

(Operation) Next, the operation of the microbrush deburring device 10 constructed as above will be explained.

First, the micro brush B with burrs fired and formed by a rotary press is placed in the chute 72.
It is sent to the hopper 71 through the hopper 71, and is stored in the hopper 71. When the microbrush B is sent, the remaining brush raw material powder is also sent together, so not only the microbrush B but also the brush raw material powder is accumulated in the hopper 71. The hopper 71 is stopped at the standby position for a predetermined period of time.

When the microbrush B reaches a predetermined amount, the hopper 71 rotates downward and stops at the supply position. Then, the stored microbrushes B fall into the sieve 46. When all the microbrushes B have fallen, the hopper 71 rotates upward and stops again at the standby position.

When the charging of the microbrush B is completed, the hopper 71 outputs a charging completion signal. Upon receiving this signal, the motor 32 is activated and its main shaft 34 begins to rotate. The rotation of the main shaft 34 is controlled by the rotation shaft 22 by a shaft coupling 35.
The crank 24 has one end connected to the rotating shaft 22.
rotates in the direction of the arrow in FIG. The rotation of the crank 24 is converted into reciprocating motion by the connecting rod 28, and the connecting protrusion 30
, and alternately applies a pressing force and a tensile force to the swing plate 41. This force causes the swing plate 41 to move against the guide rail 13.
oscillates horizontally along the After a predetermined period of time has elapsed, the motor 32 is stopped and the swinging of the sieve 46 is also stopped.

As the sieve 46 swings, horizontal vibrations are applied to the microbrushes B therein, so that the microbrushes B roll on the mesh 46a of the sieve 46 and touch other microbrushes B or the metal cylinder. The collision with the portion 46b is repeated. By this action, the microbrush B is deburred.

In the deburring device 1 of the present invention, since the microbrush B vibrates on the mesh 46a of the sieve 46, not only deburring is performed reliably, but also the chamfering is performed satisfactorily. In addition, since Micro Brush B is vibrated in the horizontal direction to remove burrs, the vibration can be finely adjusted compared to the conventional vertical vibration, so it is possible to provide the optimal vibration depending on the type of Micro Brush B. becomes.

The swinging amplitude, swinging speed, and swinging time of the sieve 46 are appropriately set depending on the size and material of the microbrush B. For example, the swing amplitude is 10 to 100 mm, the rotation speed of the motor 32 is 150 rpm, and the swing time is 3 to 5 minutes.

During this deburring operation, the burrs removed by vibration fall naturally into the burr receiving container 61 through the mesh 46a. The brush raw material powder also naturally falls into the burr receiving container 61 through the mesh 46a. The burrs and brush raw material powder that have entered the burr receiving container 61 are immediately sucked and discharged to the outside through the suction duct 62.

[0033] In the conventional method, when the lid of the can was opened after deburring was completed, the accumulated dust spread around and made the work environment worse, but the deburring device 1 of the present invention
Since the dust generated during the deburring work is immediately sucked and discharged, there is no risk of it spreading to the surrounding area, which has the advantage of providing a good working environment. Furthermore, if the suction fan of the burr discharge section 60 is operated when the microbrush B sent from the rotary press is fed into the sieve 46, even if dust is generated when the microbrush B is fed, the dust will be removed. Since it is immediately sucked in and discharged, deterioration of the working environment can be further prevented.

Next, the rotary actuator 51 is operated to accommodate the microbrushes B in the sieve 46 in a basket (not shown). When the rotary actuator 51 is operated, the rotation of its main shaft 52 is transmitted to the sieve mounting plate 45 via the rotating shaft 55 and the connecting piece 56. Then, the sieve assembly 40 rotates to the take-out position, and the mesh 46a of the sieve 46 faces diagonally downward, so the microbrushes B in the sieve 46 naturally fall and are stored in a basket (not shown) via a chute 57. .

After a predetermined period of time has elapsed, the rotary actuator 51 operates again to rotate the main shaft 52 in the opposite direction. Due to its rotation, the sieve assembly 4 is in the unloading position.
0 returns to the original horizontal position. With this, one deburring operation is completed.

[0036] To perform the second and subsequent deburring work,
All you have to do is repeat the above steps. During the first deburring operation, a predetermined amount of microbrushes B that have not been deburred are stored in the hopper 71. Therefore, when the first deburring work is completed, the sieve 46 is immediately removed from the hopper 71.
Insert Micro Brush B into the machine and start the second deburring operation.

In the deburring device 1 of the present invention, the remaining brush material powder is passed through the mesh 46a of the sieve 46 during the deburring operation.
Since the brush material powder falls through the microbrush B and is immediately sucked and discharged, there is no risk that the brush raw material powder will adhere to the microbrush B and result in a defective product. In addition, ■Micro brush B with burrs
The advantage is that the series of operations of supplying microbrush B, ■ removing burrs, ■ removing removed burrs and excess brush material powder, and ■ taking out the deburred micro brush B are all done automatically and in a short time. .

In the above embodiment, the deburring device is a microbrush, but the present invention can also be applied to electric brushes other than microbrush. Moreover, the removal of the brush and the discharge of burrs can be carried out by methods other than those described above.

[0039]

[Effects of the Invention] The electrical brush deburring device of the present invention eliminates the risk of producing defective products due to deburring work.
Moreover, this work can be done in a short time without using any human hands.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment in which a deburring device for electrical brushes according to the present invention is applied to a deburring device for micro brushes for electrical machines.

FIG. 2 is a front view of the microbrush deburring device for electrical machinery shown in FIG. 1;

FIG. 3 is a plan view of the microbrush deburring device for electrical machinery shown in FIG. 1;

[Explanation of symbols]

1 Micro brush deburring device 10 Support stand
11 Substrate 12 Support plate
13
Guide rail 20 Sieve swinging part
21 Support column 22 Rotation shaft
23
Flange 24 Crank
24a Swing width adjustment groove 24b Screw hole
25 Engagement piece 25a Engagement hole
26
Fixing bolt 27 pin
28 Connecting rod 29 Pin

30 Connecting protrusion piece 32 Motor
34 Main shaft 35 Shaft joint 40 Sieve assembly
41 Rocking plate 43 Roller
44 Connecting cylinder 45 Sieve mounting plate
46 Sieve 46a Sieve net
46b
Cylindrical part of sieve 47 Lever fixing piece
48 Hook tightening lever 49 Hook 50 Brush removal part
51 Rotary actuator 52 Main shaft
53 Shaft coupling 54 Support piece
5
5 Rotating shaft 56 Connection piece
57 Chute 60 Burr discharge section
61 Burr receiving container 62 Suction duct 70 Rotary press chute 71
Hopper B Micro brush

Claims (1)

[Claims] 1. A horizontally swingable sieve means for accommodating brushes with burrs, and a swinging means for horizontally swinging the sieve means to remove burrs from the brushes housed in the sieve means. burr removal means for discharging burrs screened out from the sieve means; and brush removal means for taking out the brush from which burrs have been removed from the sieve means. Device.