JPS6146267B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention conveys a workpiece, grips and rotates the workpiece at a predetermined position close to the conveyance device, rotates a cloth buff to the workpiece according to the amount of eccentricity of the workpiece, This invention relates to an automatic wiping device that wipes away dirt from a workpiece by sliding a cloth buff evenly over the surface of the workpiece.

Conventionally, the surfaces of workpieces that have been subjected to grinding and polishing operations such as barrel finishing grinder polishing have been sometimes contaminated with dirt that cannot be removed by washing with water or tri-clean. If coating, plating, etc. are performed with such dirt attached, uneven coating, uneven hardness, uneven plating, etc. will occur. Therefore, when such dirt adheres after grinding or polishing, the surface of the workpiece has conventionally been manually wiped off with a cloth, which is a labor-intensive task.

However, according to this invention, the workpiece is intermittently conveyed, the workpiece is gripped and rotated at a predetermined position close to the conveyance device, and the cloth buff is brought into rotating contact with the workpiece to wipe the surface of the workpiece. Since we use an eccentric cam or eccentric clamp shaft even for workpieces with eccentric parts, we are able to wipe the entire surface uniformly, and all conveyance and wiping operations are performed automatically, reducing labor during wiping work. We have succeeded in obtaining an ideal automatic wiping device that does not require any wiping and can perform high-speed work.

The details of this invention will now be explained with reference to the accompanying drawings, in which FIGS. 1 and 2 show an example of an automatic wiping device of the invention.
This device consists of a wiping device body and a traverser that intermittently transports the workpiece. The wiping device main body includes a housing 2 on a base 1,
3 is provided slidably by a fluid pressure cylinder 6, and housings 4, 5 are provided slidably by a fluid pressure cylinder 7.
Bearings 8 and 9 are fixed on the top, and clamp shafts 10 and 11 are rotatably fitted into the bearings.
An electric motor 12 is mounted on the housings 2 and 3 to rotate a clamp shaft 16 via a pulley 13, a belt 14, and a pulley 15, and rotates a clamp shaft 17 via a pulley 18, a belt 19, and a pulley 20. The clamp shafts 16 and 17 rotate the clamp shafts 10 and 17, respectively.
It is facing 11. The clamp shaft 17 is rotatably fitted into a bearing 22, and the clamp shaft 16 is rotatably supported by bearings 21 and 23, and eccentric cams 24 and 25 are fixed to both ends. Further, struts 26 and 27 are provided on the base 1 to support an upper plate 29 on which a hydraulic cylinder 28 is mounted, and a lower plate 30 is fixed to the tip of the piston rod of the hydraulic cylinder 28. Fixed housing 3
1 and 32 are provided so as to be slidable relative to the pillars 26 and 27. An electric motor 33 is installed on the lower plate 30 and rotates a cloth buff 35 via a coupling 34.
On the other hand, a buffing shaft 39 is rotated via a pulley 36, a belt 37, and a pulley 38 to rotate a cloth buff 40. The buffing shaft 39 is provided with rotatable eccentric transmission wheels 41 and 42 facing the eccentric cams 24 and 25, and the buffing shaft 39 is connected to the lower plate 3.
It passes through the housings 45 and 46 that slide on the shaft hanging down from zero. Eccentric cam 24,2
When the eccentric transmission wheels 41, 42 are pushed up by the housings 45, 46, the cloth buff 40 receives resistance from the springs on the housings 45, 46 so that it always comes into contact with the workpiece. Note that 47 is a tensioner, the pulley may be a sprocket wheel, and the belt may be a chain. Next, to explain the structure of the traverser, a support stand 48 is installed on the base 1 and a fluid pressure cylinder 49 is fixed. The tip of the piston rod of the fluid pressure cylinder 49 is fixed to a workpiece receiving and supporting base 50 that is slidable up and down, and a fluid pressure cylinder 51 is fixed on the workpiece receiving and supporting base 50. The tip of the piston rod is fixed to a slidable housing 52. A movable workpiece receiver 54 is mounted on the housing 52 and supports the support plate 5.
3, and cutouts a, b, c, d, e, f, . . . are provided at equal pitch intervals. Fixed workpiece supports 55 are horizontally fixed to the base 1 on both sides of the movable workpiece support 54, and have cutouts a', b', c', d', and e similar to those of the movable workpiece support 54. ′、
f'... is provided. Note that notches b' and e' may be omitted; 56 is a scale for measuring the amount of wear of the cloth buff;
7 is a dresser that loosens stiff cloth buffs.

Further, FIG. 3 shows an example in which eccentric clamp shafts 58 and 59, in which the clamp shafts themselves are eccentric, are used in the eccentric device. In this embodiment, the eccentric cam, the eccentric transmission wheel, etc. can be omitted, and the apparatus can be simplified. The eccentric clamp shafts 58 and 59 must be rotated synchronously by a timing belt, chain, or the like (not shown).

Next, the operation of the above embodiment will be explained based on FIGS. 1 and 2. First, a workpiece is automatically or manually loaded onto a' of the notches a', b', c', d', e', f', . . . of the fixed workpiece receiver 55. The fluid pressure cylinder 51 is actuated by the limit switch, and the movable workpiece receiver 54 moves forward by one pitch, and the notches a, b, c,
In d, e, f..., a is located almost below a'. The hydraulic cylinder 49 is actuated by the limit switch, and the movable workpiece receiver 54 rises, loads the workpiece on the notch a' into the notch a, moves up to the processing line X, and stops. The fluid pressure cylinder 51 is actuated by the limit switch, the movable workpiece receiver 54 is moved back one pitch, and the workpiece is transported to the eccentric portion machining position Y. The limit switch operates the hydraulic cylinders 6, 7, the clamp shafts 10, 16 advance to grip the workpiece, and the movable workpiece receiver 54 descends and returns to its original position. The fluid pressure cylinder 28 is actuated by the limit switch, the cloth buff 40 is lowered, the buff shaft 39 is rotated by the electric motor 33, and at the same time, the workpiece gripped by the clamp shafts 10, 16 is also rotated by the electric motor 12. Also, eccentric cams 24 and 25 fixed to both ends of this clamp shaft 16 rotate, and eccentric transmission wheels 41 and 42 are in contact with these cams.
moves up and down by the amount of eccentricity, and the rotating cloth buff 40 moves up and down by the amount of eccentricity and can uniformly wipe the workpiece by contacting the eccentric part of the workpiece. When wiping is completed, the rotation of the clamp shaft 16 is stopped by a command from a timer or the like, and the cloth buff 40 is raised. The movable workpiece support 54 is operated in the same manner as described above by the limit switch, and the next workpiece is loaded into the notch a and moved up to the machining line The workpiece is mounted on the notch b of the workpiece receiver 54, and is moved back one pitch and lowered. At this time, the workpiece mounted in the notch b is transferred to the notch c' of the fixed workpiece receiver 55. In the same manner, when the workpiece is transferred to the notches c, d', and d and reaches the entire machining position Z, the limit switch operates the fluid pressure cylinders 6 and 7, and the workpiece is gripped by the clamp shafts 11 and 17, as described above. Similarly, the cloth buff 35 wipes the workpiece, but without vertically sliding, the workpiece is wiped except for the eccentric part. After the entire wiping has been completed, the workpiece is released from the clamp shafts 11 and 17, is loaded into the notch e of the movable workpiece support 54, and as it is lowered, it is transferred to the notch f of the fixed workpiece support 55, and the same operation is repeated until the workpiece is lowered. The finished workpieces are sequentially transported out of the system.

Figure 3 shows the eccentric clamp shaft 5 at the eccentric part machining position Y.
8,59, the clamp shaft itself is eccentric by the amount of eccentricity of the workpiece, so there is no need for an eccentric cam, an eccentric transmission wheel, etc., and the work can be done without raising or lowering the cloth buff 40 at the eccentric part lowering position Y. Eccentric parts of objects are wiped uniformly.

The embodiments shown in Figs. 1 to 3 above and below are devices for use when the workpiece has one eccentric portion, but if the workpiece has multiple eccentric portions, it is possible to use multiple cloth buffs at the eccentric portion machining positions. When wiping an eccentric part and a non-eccentric part at the same time, it is sufficient to adjust the eccentricity using a number of cloth buffs according to the position, and all of these are within the technical scope of this invention. be. Furthermore, since the cloth buff is intended for wiping the surface of the workpiece, it does not contain any abrasive material. Furthermore, the wiping position is not limited to the upper part of the conveying device.

As described above, according to the present invention, the workpiece is intermittently conveyed, the workpiece is gripped and rotated at a predetermined position close to the conveyance device, and the cloth buff is brought into contact with the workpiece while rotating. Dirt adhering to the surface can be automatically wiped off. In addition, an eccentric device is attached to the buffing shaft or workpiece clamping shaft, so even eccentric parts of the workpiece can be wiped uniformly, and all conveyance and wiping operations are performed automatically. It has various advantages such as not requiring any human power and allowing highly efficient wiping work to be carried out unmanned and reliably.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a side view of an eccentrically processed portion of another embodiment. 1... Base, 2, 3, 4, 5... Housing, 6,
7... Fluid pressure cylinder, 8, 9... Bearing, 10, 1
1... Clamp shaft, 12... Electric motor, 13... Pulley, 14... Belt, 15... Pulley, 16, 17
...clamp shaft, 18...pulley, 19...belt,
20...Pulley, 21, 22, 23...Bearing, 2
4, 25... Eccentric cam, 26, 27... Pillar, 28...
Fluid pressure cylinder, 19...upper plate, 30...lower plate, 3
1, 32... Housing, 33... Electric motor, 34... Coupling, 35... Cloth buff, 36... Pulley, 3
7... Belt, 38... Pulley, 39... Buff shaft, 4
0... Cloth buff, 41, 42... Eccentric transmission wheel, 4
5, 46...Housing, 47...Tension, 48
...Support stand, 49...Fluid pressure cylinder, 19...Workpiece support support, 51...Fluid pressure cylinder, 52...Housing, 53...Support plate, 54...Moving workpiece support,
55...Fixed workpiece holder, 56...Scale, 57...Dresser, 58, 59...Clamp shaft, a, b, c,
d, e, f...notch of the moving workpiece receiver 54, a',
b', c', d', e', f'...notch of fixed workpiece receiver 55, X...machining line, Y...eccentric part machining position, Z...
Overall processing position.

Claims (1)

[Scope of Claims] 1. A device for intermittently transporting a shaft-shaped workpiece having eccentric portions placed horizontally at constant pitch intervals to a wiping position, and a device for gripping and rotating the workpiece at the wiping position. , a cloth buff that rotates in contact with the workpiece to be gripped and rotated and wipes the surface of the workpiece, and a device that moves the workpiece or the cloth buff in correspondence with the eccentric portion of the workpiece. 1. An automatic wiping device, characterized in that the automatic wiping device is installed as a wiping device, and each device is connected to a predetermined control device. 2. A device for moving a cloth buff is characterized in that an eccentric cam is fixed to a rotatable clamp shaft, and an eccentric transmission wheel that can come into contact with the eccentric cam is rotatably provided on the buff shaft. Automatic wiping device according to scope 1. 3. The automatic wiping device according to claim 1, wherein the device for moving the workpiece is provided with an eccentric clamp shaft for gripping and rotating the workpiece.