JPS60263638A - Automatic material replacing apparatus - Google Patents

Abstract

PURPOSE:To achieve unmanned operation by advancing/retracting two stopper rollers against single referential roller thereby performing holding/releasing of material. CONSTITUTION:Two stopper rollers 11 advancable in two directions toward the center of single referential roller 9 to push a circular material against said roller 9 and rotate while supporting at three points are provided while facing each other. Then the stopper roller 11 is advanced/retracted through advancing/ retracting means toward the center of the referential roller 9 to hold the material when advancing while to release when retracting. The circular material is fed through feeding means to the side of the stopper roller 11 to stop the head material while matching with the gap between said rollers 9, 11 then feed to the material grasping position through replacing means 39 associated with releasing of the machined material and carry out the finished material to the outside. Consequently, the machined material and the yet-machined material cab be replaced quickly and automatically.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention allows processed materials and unprocessed materials to be automatically exchanged when processing, for example, grinding or polishing the inner or outer surface of a circular material. Regarding equipment.

(b) Conventional technology Conventionally, when processing circular materials such as internal grinding and polishing,
As shown in FIG. 7 of the drawing, a circular material 1 is supported by a chuck 3 mounted on a horizontal main shaft 2, and a rotary grindstone 5 supported by a carriage 4 is cut into the circular material 1 to process it. After completing this process, the circular material l is removed from the chuck 3.

(c) Problems to be solved by the present invention Therefore, in the above-mentioned method, the chuck 3 is opened to supply the circular material 1, and after supplying, the chuck 3 is tightened and rotated, and when the machining is completed, the rotation of the chuck 3 is stopped. The chuck 3 is stopped and opened, the processed material 1 is removed, a new material 1 is supplied to the chuck 3, and the chuck 3 is tightened and then rotated for processing, so manual labor is required to remove the material. The problem was that it took time.

Therefore, in place of the chuck, the present invention uses a gripping means that moves two presser rollers forward and backward with respect to seven reference rollers to clamp and release the material, and also uses a synchronized feeding material means to release the material. The present invention provides a device that automatically and quickly exchanges processed material for unprocessed material using an exchange means for exchanging processed material for processed material.

2) Means for Solving the Problems The present invention has seven reference rollers driven at fixed positions, which move toward the center from two directions, press a circular material onto the reference rollers, and rotate with three-point support. The presser rollers are moved forward and backward toward the center of the reference roller by an advancing and retracting means, and the material is clamped by moving forward and the material is released by retreating. A circular material is sent by the material feeding means, and the first material is stopped in line with the gap between the reference roller and the presser roller, and the material is changed by operating the exchanging means as the processed material is released. The processed material is sent to the gripping position and sent out to the outside, and the processed material and the unprocessed material are automatically exchanged.

(e) Operation: When the seven reference rollers in the technical means described above are rotated and the cutting edge of the circular material sent by the material feeding means is supplied to the gap between them and one of the presser rollers, the replacement is performed. Upon actuation of the means, the leading material is fed through the gap between the reference roller and the hold-down roller into the gripping position. Then, when the two presser rollers are advanced from two directions toward the center of the reference rollers by the advancing/retracting means, the circular material is pressed against the reference rollers, and is sandwiched between the seven reference rollers and the two presser rollers. It is supported at a point and rotated by the rotational force transmitted from the reference roller or presser roller, so if a grinding wheel is cut into the inner surface of this circular material or the outer surface between the presser rollers and fed, the circular material can be made into a circular shape. The material has been processed by grinding or polishing using a grinding wheel.

When the processing is completed in this way, the two presser rollers are moved back using the advancing/retracting means to release the processed material, and when the exchanging means is activated, the material is fed to the position corresponding to the gap between the reference roller and the presser roller by the material feeding means. The unprocessed material, which had been stuck and stopped, is sent behind the presser roller, sent to the receiving member located at this position, and discharged to the outside. The unprocessed material is pressed against the standard roller, and the material is supported and rotated at three points by the and rollers, and the next processing is performed by the grinding wheel. When the processing is completed, the presser roller retreats and releases the material, Material exchange is performed in which the exchanging means feeds the unprocessed material sent by the material feeding means to the gripping position and sends out the processed material, and the grinding wheel is sent and processed along with this, so the circular shape Processing such as grinding and polishing on the inner or outer surface of a material can be performed unmanned and with high efficiency.

(F) Embodiments Examples of the embodiments of the present invention are shown in FIGS. 2 to 3 of the drawings.

Reference numeral 6 denotes a table which is thrown horizontally as shown in Figures 2 to 3 of the drawing cylinder, and a bearing 7 is placed on the lower side of the table as shown in Figure 3 of the drawing.
is fixed vertically to support a shaft 8 whose upper end projects above the table 6, a reference row 29 located on the upper side of the table is fixed to the upper end of the shaft 8, and a driven wheel 10 is mounted at the lower end. Fixed and included.

Ll, Ll are the reference rollers 9 on the horizontal table 6 mentioned above.
With the two presser rollers provided correspondingly to It is designed to be moved forward and backward by means of forward and backward movement, and its surfaces may be lined with rubber or the like, and driven wheels 13 and 13 are fixed to the lower ends of the shafts 12 and 12.

14, 14 are the rings 1 of the presser rollers 11, 11 mentioned above.
A movable bearing supporting 3° 13, its sliding part 15,
15 is engaged with guides 16 and 16 provided below the horizontal table 6 parallel to the two straight lines A and A as shown in FIGS. 1, 3, and S of the drawings, and these movable Clevis-shaped cylinders 18, 180 and rods 19, 19 whose rear ends are attached to shafts 17, 17 are connected to the bearings 14, 14.

Reference numeral 20 denotes a rack rod that prevents the cylinders 1B, 1.8 from being out of synchronization when the cylinders 18, 18 are actuated by air, and as shown in FIGS. At the bottom of the shaft 21, 2
1 supported by the pinions 22, 22, and the racks 23, 23 attached to the sliding parts 15, 15 of the movable bearings 14, 14 are also meshed with the pinions 22, 22. pinion 22
.

Reference numeral 24 denotes a belt that transmits the rotation of the motor 125 to the three driven wheels LO, 13 and 13 described above, and as shown by the solid line in FIG. The intermediate wheel 28 corresponding to , and the passive wheel [0
and 13. ．． 13, the driving wheel 27 and the intermediate wheel 28 are suspended with slack between them, and in this slack part, a cylinder 290 and a cylinder 30 which operate in synchronization with the advance and retreat of the above-mentioned movable bearing v4.14 are installed. The supported tension wheel 31 is engaged to prevent transmission failure even when the movable bearings 14 move back and forth.

32, 32 are elongated holes through which the shafts 12, 12 of the presser rollers 11, 11 in the horizontal table 6 are inserted;
As shown in FIG. 1, the holes are centered on two straight lines A and A that intersect at the center S of the reference roller 9.

33, 33 are screws for regulating the retreating position of the movable bearing 14 and 14, as shown in Figure S of the drawing.
The sliding parts 15, 15K of 4, 14 are made to correspond to each other, and are screwed into protrusions 34, 34 attached to the guides 16, 16, so that when the sliding parts 15, 15 come into contact with these, they are stopped. The movement of the presser foot rows 211 and 11 is kept within the necessary range.

Reference numeral 35 denotes a belt conveyor which is close to the above-mentioned presser roller 211 side, which is the front edge side of the horizontal table 6 in FIG. 9 and presser roller [1
A stop plate 38 is provided on the rear side of the gap C to stop the circular material 36 guided by the guides 37, 37 in a manner corresponding to the gap C. It is arranged so as to be close to the roller 9.

Reference numeral 39 denotes a replacement means for the circular material 36 corresponding to the gap C between the reference roller 9 and the presser roller 11, which is fixed to the rod 41 of the cylinder 40 as shown in FIG. 1 and serves as a guide when the rod 41 advances. 37, the first material 36 sent through 37 is sent to a gripping position d by the reference roller 9 and presser rollers 11, [1].

Reference numeral 42 denotes a processing head which is provided above the gripping position d of the circular material 36 as shown in FIG. , the grinding wheel 43 is fed by a feeding means 44, and the grinding wheel 43 performs grinding and polishing.In internal polishing, the grinding wheel 43 is moved by the reference roller 9 as shown in FIG.
If the machining head 42 is brought into contact with the circular material 36 at a position directly opposite to the grinding wheel 43, accurate grinding can be performed with almost no errors even if the supporting position of the circular material 36 deviates to some extent. This is a device that is equipped with a means for adjusting the inclination so that it can be applied not only vertically to perform straight grinding, but also to perform taper grinding and chamfer grinding by applying it diagonally, but this is a known method. Therefore, the drawings and description will be omitted.

Reference numeral 45 denotes a stopping member of a circular material 36 which is provided movably between the straight lines A and A along which the presser rollers 11 and 11 advance and retreat, and when the processed circular material 36 is pressed by the unprocessed material 36, Even if this happens, it acts to stop this and direct it toward the discharge direction.

46 is a control panel installed on the front side of the table 6, etc., which controls the cylinders 18 and 18 for the presser rollers 11 and 11, the cylinder 29 for the tension roller 31, and the cylinder 40 for the material exchange means 39 in order at a predetermined timing. It is equipped with a sequence controller 47 for operating the system and a switch 48 for starting and stopping.

The apparatus shown in the above embodiment supplies the circular material 36 between the guides 37, 37 on the belt conveyor 35, and aligns the foremost one with the gap C between the reference roller 9 and the presser roller [1]. When the start/stop switch 48 is turned on, the cylinders 18, 1.8 first pull the sliding portions 15.15, move the movable bearings 14, 14 backward, and press the presser rollers ll', 1.
1 and the reference roller 9 is widened as shown in FIG. 4 of the drawing. Then, the cylinder 40 pushes out the exchanging means 39 and sends the first one of the circular materials 36 through the widened gap C between the reference roller 9 and the presser roller 11 to the gripping position d as shown in the figure, and then retreats. . At this time, cylinders 18, 1
8 moves forward, and the sliding parts 15 , 1 of the movable bearings 14 , 14 move forward.
5 along the guides 16 and 16, and the sliding part 15
, 15 as shown in Figure S of the drawings.
Since the pinions 22, 22 and the racks 23, 23 are synchronized by the synchronizing means, the presser rows 211 and 1 supported by the movable bearings 14 and 14 advance uniformly, and the circular material 36 being sent to the gripping position d. is held between the reference roller 7 and each rotation is transmitted to the circular material 36. Therefore, since the circular material 36 rotates stably due to the three-point support, the grinding wheel 43 supported by the processing head 42 is delivered to the circular material 36, and the grinding wheel 43 is cut into the inner surface corresponding to the reference roller 9. 43, the grinding wheel 43 grinds the inner surface of the circular material 36.

When the grinding is finished, the grinding wheel 43 is pulled up.

The presser rollers 11 , , 11 are retracted and the processed material 36
When the gap C between one of the jars and the reference roller 9 is widened, the material exchange means 39 moves forward and the belt conveyor 35
As a result, the unprocessed material 36 that has been fed to the front thereof is fed through the gap C to the gripping position d. Then, the processed material 36 that was on the gripping position d is sent from the gripping position d to a chute, conveyor, etc., and thereby discharged to the outside, but at this time, the presser rollers 11, 11, which have retreated, are moving forward. When the unprocessed material 36 is sandwiched between the reference roller 9 and rotated with three-point support, the grinding wheel 43 is lowered relative to it to perform grinding, and when the grinding is finished, it rises and at the same time the presser The rollers 11 and 11 move back to release the material 36, and as the material is released, the exchange means 39 feeds the next unprocessed material 36 to the gripping position d, thereby replacing the processed material 36 at the gripping position d.
Since the material is sent out to the outside and the material is automatically exchanged, the inner surface polishing work of the circular material 36 does not require any manual labor and can be performed with high efficiency.

Further, the presser rollers 11, 11 are applied to the outer surface of the circular material 36.
If the grinding wheel 43 is brought into contact in the middle of the circular material 3
The work of polishing the outer surface of No. 6 is also carried out unmanned and with high efficiency.

Next, another example of implementing the present invention will be shown.

FIG. 7 shows a rack 20 and a tobinion 22 used in the embodiment shown in FIGS. 1 to 4 to prevent synchronization deviations caused by air drive of the cylinders 18 and 1.8.
, 22 and racks 23, 23 are used as means for moving the presser rollers 11, 11 forward and backward, and a cylinder 49 is connected to one end of the rack 20 to move the rack 20 forward and backward in the direction of the arrow. and pinion 22
, 22 rotate in synchronization to move the sliding parts 15, 15 of the movable bearings 14, 14 to which the racks 23, 23 are attached uniformly forward and backward, so that the presser rollers 11, [1 perform completely synchronized forward and backward movement.

Figure g of the drawing shows a slide lawn type holding roller 11, ,
It was used for the advancing and retracting means of 11, and the movable bearings 14, 1
4 are provided with rollers 50 and 50, respectively, and these rollers 5
.
1 back, 6, and so on. The rollers 50 , 50 having their noses in the rolling elongated hole 2 move the movable bearings 14 , 14 forward and backward in the same way while rolling in and out within the elongated hole 52 .
, 14 are moved forward and backward in complete synchronization.

In FIG. 2, a link type is used as the means for advancing and retracting the presser rollers 11, 11, and a pair of links 56, 56 whose ends are connected to the movable bearings 14, 14 are connected to the presser rollers 11.
, 11 advances and retreats between the two straight lines A-A with reference +=r-
- When the rod 60 of the cylinder 59 is connected to the sliding body 58 engaged with the guide 57 set toward the center of Movable bearing 14 while changing the included angle of
, 14 in the same manner, the movable bearings 14 , 14
The presser rollers 11 and 11 supported by the rollers are moved forward and backward in perfect synchronization.

The embodiments shown in FIGS. 7, 7, and 7 of the drawings described above have different configurations and advance/retreat movements, but the presser rollers 11, 1
1 is moved forward to sandwich the circular material 36 between it and the reference roller 9, supported at three points and rotated, and moved backward to release the circular material 36 to separate the processed material 36 and the unprocessed material 36. Since there is no difference in the operation of making the exchange occur, further explanation of the operation of these embodiments will be omitted.

(G) Effects of the Invention As described above, in the device according to the present invention, when the two presser rollers retreat to widen the gap between them and the reference roller, the exchanging means feeds the circular material into the gap and retreats, and the exchanging means When it retreats, the presser roller approaches the reference roller, pinches the circular material, rotates it with three-point support, and allows the processing tool to process it. When the processing is finished, the presser roller retreats to widen the gap between it and the reference roller, and this The exchange means feeds a circular material into the gap, and this exchanges the processed material, so the feeding of the material to the processing position, gripping rotation of the supplied material, gripping release and discharge are automatically performed. This will lead to unmanned work and high efficiency.

Since the rotation is stabilized by three-point support, processing accuracy comparable to that achieved with chuck gripping can be obtained.

By changing the contact angle of the processing tool to the material, various types of processing such as straight, taper, and chamfering can be performed.

Dimension i using digital counter etc. Easy to set,
You can definitely do it.

Specifications can be changed and adjusted easily by unskilled personnel in a short time.

Since the supply and discharge of materials can be made straight, continuity with the next process can be easily performed.

It has the following unique effects.

[Brief explanation of drawings]

FIG. 1 is a front view showing a conventional grinding machine that manually attaches and detaches workpiece materials. FIG. 2 is a plan view showing an example of an embodiment of an automatic work material exchange device according to the present invention. Figure 3 is the X in Figure Ω.
- Cross-sectional view on the X-ray. FIG. 4 is a plan view of the presser roller in a state in which it is removed. FIG. 5 is a plan view showing the state of FIG. 4 with the table removed. FIG. 3 is a sectional view taken along the Y-Y line of FIG. 7 to 9 are principle plan views showing other embodiments of the apparatus according to the present invention, excluding the table. In the figure, 9 is a reference roller, Ll, 11 is a presser roller, 1
Reference numerals 8, 18, 49, 54, and 59 are advancing/retracting means; 35 is a material feeding means; C is a gap between the reference roller 9 and the press roller [1]; 39 is a material exchanging means.

Claims (1)

[Claims] seven reference rollers that are driven at fixed positions, two presser rollers that advance toward the center of the reference rollers from two directions, press the circular material against the reference rollers, and rotate with three-point support, and these presser rollers. advancing and retreating means for moving the row 2 toward the center of the reference roller to clamp and release the circular material; A material feeding means that stops in accordance with the gap between the roller and the presser roller, and a circular material that stops in accordance with the gap is fed into the gripping part as the processed material is released,
An automatic work material exchange device comprising: a material exchange means for sending out the processed material.