JPS5981051A - Work feeding apparatus for automatic centering machine - Google Patents

Abstract

PURPOSE:To carry-out the molding work for a work in high efficiency by permitting works to be supplied one by one certainly into an automatic centering machine and to be recovered by said machine through a series of operation of each constitution part. CONSTITUTION:When a work W is attached onto a stop-side clamp member, in an automatic centering machine, another clamp member shifts to clamp the work W. Then, an opening and closing cylinder 8 operates, and arms 15 and 16 opens through a crevice 9 and links 10 and 11, and the work is released, and the cylinder-rod of a cylinder 28 returns, and a clamp mechanism part retreats and waits in this state. During the above-described time, molding cutting for the work W is carried-out, and when the above operation is completed, the clamp mechanism part is advanced again by the operation of the cylinder 28, and then the cylinder 8 is operated to clamp the molding-completed work W by means of hooks 17 and 18. Thus, the molding work in high efficiency is permitted.

Description

[Detailed Description of the Invention] A molding work for academic lenses (hereinafter simply referred to as a work), that is, a work for finishing the work into a desired shape while cutting the corners of the work by copy grinding. 5 Attached to an automatic core scattering machine This device is related to a workpiece feeding device that feeds workpieces one by one to the grinding section of an automatic centering machine, and its purpose is to reliably feed the workpieces one by one to the automatic centering machine. Another object of the present invention is to provide a device for feeding a workpiece to an automatic centering machine, which can be recovered and contributes to high efficiency in shaping workpieces.

The present invention includes a magazine that stores workpieces vertically one by one, a mechanism that moves the magazine forward one pitch at a time, a push-up mechanism that pushes up the workpieces stored in the magazine one by one, and a mechanism that grips the workpieces pushed up from the magazine. a cylinder that moves the clamp mechanism forward and backward relative to the automatic centering machine; a mechanism that rotates the clamp mechanism counterclockwise by 90 degrees; and a cylinder that rotates the clamp mechanism when the clamp mechanism moves forward toward the automatic centering machine. This is a work supply device for an automatic centering machine, which includes a mechanism for moving left and right, and the drawings show an embodiment thereof. In the figure, reference numeral 1 denotes a magazine base, on which a magazine 3 is placed movably from side to side via a magazine frame 2 (it is simply placed on the magazine frame 2). In order to make the magazine 3 movable, for example, a rack 2b may be fixed on the back side of the bottom plate 2a of the magazine frame 2, and a pinion 2C that rotates intermittently may be engaged with the rack 2b. The magazine 3 is moved forward one pitch at a time, that is, by the distance between the works stored in the magazine 3 in a step to be described later. The center part 3a of the bottom of the magazine 3 is open in the longitudinal direction, and corresponding openings are also formed in the magazine frame 2 and the magazine base l, through which the push rod 4 rises to the upper part of the inside of the magazine 3. It can be so. The pushing rod 4 is lowered four times by a cylinder 5. Next, the clamp mechanism will be described (see especially FIGS. 3 and 4). Reference numeral 6 denotes a plate, to which an opening/closing cylinder 8 is fixed via a cylinder bracket 7. The cylinder rod of cylinder 8 is fixed to clevis 9. 10.11 are links arranged on both sides of the clevis 9 and pivotally supported on the clevis 9 by pins 12, and the other ends of the links 10.11 are connected to the pins 1
3.14 pivots the arm to 5.16. I7.
Reference numeral 18 denotes several claws at the ends of the arms 15 and 16, which grip the workpiece W. Reference numeral 19.20 denotes a bracket fixed to the plate 6, and a slide shaft 21.22 passing through the arm 15.16 is passed above and below the bracket. Oha arm 15.1
With the slide ball bush fixed to 6, slide shaft 2
1.22 to be able to slide left and right. 24 is an adjustment bolt for adjusting the opening degree of the arms 15 and 16. B is a back plate, to which the cylinder path is fixed via brackets 26 and 27. Reference numeral 29 denotes a bracket fixed to the plate 6, and the cylinder rod of the cylinder path is connected to this bracket 29. 30.31 is a slide shaft that is supported by bearings 32.33 installed on the back plate 25K and slides, and its distal end is connected to the connecting member 34 fixed to the plate 6. , so as to slide according to the movement of the cylinder rod of the cylinder 28. 35 is an arm part, and the back plate 5 is attached to the seventh part (see Fig. 1). 36 is a rotating cylinder for rotating the clamp mechanism, and its cylinder rod is fixed to the rack 37. The rack 37 is then engaged with a pinion (not shown) integrated with the clamp mechanism. The rotation axis of the pinion is fixed to the arm portion 35, and the clamp mechanism portion is configured to rotate around one rotation axis of the pinion. 38
3 is a general automatic centering machine, and 39 is a workpiece grinding section. Further, 4° is a cylinder for moving the clamping mechanism moved forward by the cylinder 28 to the flanged position in the workpiece grinding section 39, and 41 is a guide shaft. Note that a sensor using an optical fiber may be used to detect whether the processed workpiece W is reliably stored in the magazine 3 or not.

To explain an embodiment illustrating the operation of the present invention, first, the opening/closing cylinder 8 is operated in the state shown in FIG. 1, and when the cylinder rod is lowered, the clevis 9 is also lowered. A downward force is also applied to the link 10.11 which is pivotally connected to the clevis 9 by the pin 122, while the other end of the link 10.11 is pivotally connected to the arms 15 and 6 by the pin 13.14. Since there is, link l011
1 pivots open, and as a result a force is applied to the arms 15, 16 in the direction of separation. Then, the arms 15 and 16 are respectively attached to the slide shafts 21 and 22 and moved in the separating direction, so that they are ready to receive the workpiece W. Its opening degree can be adjusted using an adjustment bolt. Next, when the cylinder 5 operates, the push-up rod 4 passes through the magazine base l and the magazine frame 2, rises from the center part 3a of the magazine 3, pushes up one workpiece W, and comes to the position between the claws 17 and 18 of the arm 15 and 16. Let it happen.

When the cylinder rod of cylinder 8 returns in this state, arm 15.1 moves in the opposite direction to that described above.
6 is closed, and the workpiece W is clamped at the claws 17 and 18. At the same time, the push rod 4 descends. Next, when the rotating cylinder 36 operates to move the rack 37 forward, the pinion meshing with it rotates, and the clamp mechanism integrated with the pinion rotates until it becomes horizontal (
The forward distance of the rack 37 is set so that it stops in that state. ). When the cylinder 4 is activated, the clamp mechanism moves forward, and the workpiece W reaches the workpiece grinding section 39 of the automatic centering machine 38. At this point, the cylinder 40 is actuated to move the clamping mechanism section left and right, and the workpiece W is brought into contact with the stationary side clamping section of the workpiece grinding section 39 .

The reason for this 5 is that the workpiece clamping mechanism in the automatic centering machine 38 is not a system in which the clamping members approach the workpiece from both sides and clamp it; instead, one clamping member does not move and only one clamping member clamps the workpiece. This is because a method of moving and clamping is adopted. That is, in this method, it is necessary to take care not to scratch the surface of the work W by the clamp member. Therefore, in the case of a method in which both clamp members move, the above-mentioned process is not necessary. When the workpiece W is brought into contact with the stationary side crank portion as described above, the other clamp member moves and clamps the workpiece W. Then, the opening/closing cylinder 8 operates again, and the clevis 9, link 10.
Arms 15 and 16 are opened via 11 to unclamp the work, and the cylinder T-rod of cylinder 4 is returned to its original position, causing the clamping mechanism to retreat and stand by in that state. During this time, the shape grinding of the workpiece W is carried out, and when that is finished, the clamp mechanism moves forward again with the cylinder 40 months, and the opening/closing cylinder 8 is operated and the claw 17
．． 18 clamps the workpiece W that has been modeled. Thereafter, when the clamp in the automatic centering machine 38 is released, the clamp mechanism moves to the right by the action of the cylinder 40. Then, the clamping mechanism part that has been retreated by the cylinder 28 is now reversed by 90 degrees through the pinion and the rack 37 by the action of the rotating cylinder 36 to become vertical.

Then, when the arms 15 and 16 open due to the action of the opening/closing cylinder 8, the workpiece W falls away from the claws 17 and 8, and is returned to its original position within the magazine 3. Then pinion 2c1
The magazine 3 moves forward by one pitch via the rack 2b, and the above-mentioned process is repeated for the next workpiece (.

The present invention is as described above, and has the following effects and features.

(1) Through a series of operations of each component, the workpieces can be reliably fed one by one to the automatic centering machine and recovered, thereby increasing the efficiency of the workpiece shaping work.

(21) There is no risk of damage to the work during operation.

(3) The magazine is replaceable, so it can be easily replaced and there is no loss time.

(4) Since the work supply magazine and the collection magazine are the same, it does not take up much space and is easy to operate.

(5) Since the clamping force can be adjusted according to the size and material of the workpiece, there is no possibility of defective products due to cracks, chips, etc.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a view showing a magazine feeding mechanism and a workpiece lifting mechanism, FIG. 3 is a front view of the clamp mechanism, and FIG. 4 is a side view thereof. 3...□Magazine, 4...Pushing rod, 5...Cylinder,...Arm, 17.18...Claw, 24.
・Adjustment bolt, 28...Cylinder, -130, 31
...Slide shaft, 35...Arm, 36...Rotating cylinder, 37...Rank, 40...Cylinder Patent applicant Naoi Seiki Co., Ltd. Representative patent attorney Haruo Saito 1m - ”<Q 2 ja Figure 2 Figure 3 Table 4

Claims (1)

[Claims] A magazine that stores workpieces one by one vertically, a mechanism that advances this magazine one pitch at a time, a push-up mechanism that pushes up the workpieces stored in the magazine one by one, and a clamp mechanism that grips the workpieces pushed up from the magazine. , a cylinder that moves the clamp mechanism forward and backward relative to the automatic centering machine, a mechanism that rotates the clamp mechanism counterclockwise in increments of rotation, and a cylinder that moves the clamp mechanism left and right when it moves forward toward the automatic centering machine. A device for feeding workpieces to an automatic centering machine.