KR830000959Y1 - Pitch feeder slider oscillator - Google Patents

Abstract

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Description

Pitch feeder slider oscillator

The figure shows an embodiment of the present invention.

1 is a partial cutaway plan view overall.

2 is a front view of the same.

3 is a plan view of the feed mechanism.

4 is a side view of the same notch.

5 is a perspective view of the fourth direction V direction.

6 is a cross-sectional view of FIG.

7 is a cross-sectional view of FIG.

8 is a detailed view of a lift bar drive.

9 to 10 are detailed views of a slider drive.

The present invention relates to a slider resonator in a pitch feeder for carrying sheet materials to be machined into a machine tool, such as a press, at a predetermined pitch.

As a known technique of sheet material conveying apparatus for positioning and supplying sheet material to feed mechanism of pitch feeder, there is one disclosed in Japanese Utility Model Publication No. 49-86489, but it conveys per one part of the workpiece material. This is achieved by repeating the gripping, advancing, releasing, and retracting operations, and since the length of the conveying pitch during conveyance is made constant, there is a considerable inconvenience.

An object of the present invention is to provide a ratchet claw that engages a pitching cam set to a desired pitch in advance under a slider which is freely moved along a guide member, and engage the ratchet claw and the pitching cam. And repeating the release to provide a slider feeder of a pitch feeder that enables the slider to be sequentially moved at a predetermined pitch, so that the sheet material can be stably supplied to the machine tool at the correct pitch.

Hereinafter, an embodiment showing the present invention will be described in detail. In FIG. 1, (1) is a front-back conveying mechanism, and although not shown in FIG. 1, the lifting table 3 is provided in the upper part of the base 2 shown in FIG. . As is apparent from FIG. 1 and FIG. 2, a plurality of lift racks 4 are provided in the lower part of the lift table 3, and in the vicinity of these lift racks 4 are orthogonal to these lift racks 4. The drive shaft 5 is fitted in the direction. The drive shaft 5 is fitted with a pinion 6 engaged with the lift rack 4 and a pinion 8 engaged with a drive rack 7 provided in a horizontal direction, respectively, so that these racks 44 are fitted. ) And (7) are interlocked, and at the same time, the tip of the piston rod 9a of the lift cylinder 9 is connected to the dear rack 7. The lift cylinder 9 is attached to a part of the support plate 10 provided on the pedestal 2, and the compression spring 11 which biased the piece funnel 9b to the head shaft is accommodated inside. By supplying fluid to the head side of the lift cylinder 9, the lifting table 3 is lowered, and the lifting table 3 is raised by the action of the compression spring 11 by stopping supply of the fluid. In addition, (13) is a limit switch which detects the completion | finish of lowering of the elevation table 3, The operation of the feed mechanism 14 mentioned later is started simultaneously with turning on this limit switch 13. As shown in FIG.

Moreover, the back and forth movement table 15 is provided on the lifting table 3. Both sides of the front and rear movement table 15 extend outwardly at both edges of the elevating movement table 3, and rollers 16 guided to both sides of the elevating table 3 are pivotally fitted on the lower surface thereof, and these rollers 16 are rotated. The back and forth movement table 15 can be smoothly moved back and forth in the arrow ab direction with respect to the elevating table 3, and a pair of positioning plates 17 are provided on the rear upper surface of the back and forth movement table 15. They are spaced apart from each other in the width direction of this table.

Long holes 17a are laid in these positioning plates 17 along the longitudinal direction, and the respective positioning plates at arbitrary angles are tightened by fastening the screws 18 inserted through these long holes 17a to the front and rear motion table 15. While being able to fix (17), the pilot pin 20 which fits into the hole 19a opened on the sheet | seat material 19 to convey is protruded in the front-end | tip part of each positioning board 17. As shown in FIG. That is, by inserting the hole 19a of the sheet material 19 into these pins 20, the sheet material 19 can be positioned with respect to the back and forth movement table 15. FIG.

On the other hand, as shown to FIG. 3 thru | or 5, the said feed mechanism 14 is provided in the upper part of the base 2 at the front-end | tip part of the said forward and backward movement table 15. As shown in FIG. The feed mechanism 15 includes the guide members 21, 22, and 23 as shown in FIG. 3 or less in the feed direction (the first arrow arrow c) of the sheet | seat material 19. FIG. Of these guide members 21 to 23, the guide members 21 and 23 are mounted on the support block 24 provided on the pedestal 2 so as to be located outside and parallel to each other, and the remaining guide members 22 are mounted on the support block 24. (21) It is attached freely along the inside. The outer side of the guide member 21 is provided with alternately extending bolts 25 and pulling bolts 26 in the longitudinal direction, and these pulls are adjusted by adjusting the bolts 25 and the pulling bolts 26. While the straightness can be adjusted, a slider 27 is accommodated between the guide member 22 and the guide member 23. As shown in FIG. 6, the fixed side guide roller 28 which is electrically guided in contact with the guide member 22 side of the slider 27 is rotatably fitted, and the guide side 23 is in contact with the guide member 23 on the opposite side. The movable side guide roller 29 is fitted in a rotational manner. The side rod 30 in which the movable shaft guide roller 29 is fitted is moved somewhat in the folding direction of the guide member 23. The movable side guide roller 29 is pressed against the guide member 23 by the compression spring 31 that biases the shaft rod 30, and the guide roller that receives a radial load in the lower portion of the slider 27. (32) is fitted. Thus, the slider 27 can reciprocate in the feed direction (arrow C) along the guide rollers 22 and 23 with respect to the guide member 22. The lower jaw 33a of the clipper 33 is fixed to the upper front end of the slider 27. At the top of the lower jaw 33b, the upper jaw 22b is provided to prevent rotation, and at the proximal end of the upper jaw 33, the end of the piston rod 34a of the gripper cylinder 34 mounted on the slider 27 is provided. Since the gripper cylinder 34 lowers the tip of the upper jaw 33b, it is possible to bite one end of the sheet material 19 to be transferred between the upper jaw 33b and the lower jaw 33a. have. In addition, a ratchet claw 36 having a proximal end fitted to a pin 35 is provided below the slider 27. This ratcheted claw 36 has an engaging portion 36a downwardly at the tip side, and a roller 37 is provided on the shaft 36b at the side, and the tip portion is downwardly pressed by the compression spring 38. Is attached to the pitching cam 39 provided below the slider 27. The pitching cam 39 is inserted into the threaded rod 40 which is transversely arranged along the moving direction of the slider 27, and moves along the threaded rod 40, and at the same time, it is screwed to the threaded rod 40. By screwing both sides of the pitching cam 39 with the heavy nut 40a, the screw rod 40 can be fixed to arbitrary positions in arbitrary pitches. The guide cam 41 is fixed to the side surface of the pitching cam 39, and at the side of the guide cam 41, the roller 37 provided in the ratchet claw 36 is lifted from the bottom, and the ratchet claw 36 is provided. A lift bar 42 is provided to open the engagement of the pitching cam 39 with the < RTI ID = 0.0 > As shown in FIG. 8, both ends of the lift bar 42 are pivotally supported between a pair of bell cranks 43 which are spaced apart in the feed direction, and between each bell crank 43 It is interconnected by an actuating rod 44 with a middle portion 44a. Then, the movable portion 45a of the electromagnetic solenoid 45 is connected to one end of the operating rod 44, and the respective bell cranks 43 are rotated through the bell operating rod 44 by the electromagnetic solenoid 45, whereby the angle bell The lift bar 42 transversed between the cranks 43 is configured to move up and down while maintaining a horizontal state.

On the other hand, one end of the wire rope 46 is attached to the forward end of the slider 27. The other end side of the wire rope 46 extends rearward by bypassing the pulleys 47 and 48 fitted to the support block 24, and also bypasses the pleats 49 and hangs down the pedestal 2 (ninth) See also), the weight 50 is attached on the way. In addition, the end of the wire rope 46 is bound to one end of the chain 52 after bypassing the pulley 51 mounted on the bottom of the pedestal 2. In addition, the cam 53b for detecting the forward advance of the slider 27 by acting on the limit switch 55 is a cam for detecting the literan end by acting on the limit switch 54. The other end side of the degree chain 52 bypasses the sprocket 56 provided on the pedestal 2, extends to the slider 27 side, and is connected to the rear end of the slider 27. The sprocket 56 is fixed to one end of the rotating shaft 58 fitted to the bearing 57, and an electromagnetic clutch 59 is provided in the middle of the rotating shaft 58. As shown in FIG. The electromagnetic clutch 59 is interrupted between the rotary shaft 58 and the pulley 60 rotatably fitted to the rotary shaft 58 by being turned on and off by the limit switches 54 and 55, The lean 60 motor is interlocked with the pleats 60 via the belt 61 (see FIGS. 9 and 10). The dot also indicates the center of a machine tool such as a press into which the sheet material 19 is to be carried.

Next, the operation of the apparatus described above will be described. When the sheet material 19 is carried in at the same pitch, first, the position of the pilot pin 20 of the positioning plate 17 is adjusted in accordance with the opening 19a opened in the sheet material 19, and the desired pitch is shown. The position of each pitching cam 39 is fixed to the screw rod 40 at that position. Next, the slider 27 is positioned at the start end (FIGS. 3 and 4 show the state where the slider 27 has reached the end), and in this state, the slider 27 is conveyed on the front and rear motion table 15. On the gripper 33 of the slider 27 which mounts the sheet | seat material 19, positions it with the positioning board 17, moves the front-back motion table 15 to the front-end | tip, and waits at the beginning, One end of the sheet material 19 is clamped. When the gripper 33 clamps the sheet 19, the fluid pressure is supplied to the lift cylinder 9, and the front and rear motion table 15 is lowered like the lift table 3, and the hole of the sheet material 19 At the same time as the pilot pin 20 comes out of 19a, the sheet material 19 is bitten by the gripper 33 on each of the guide members 21, 22 and 23 of the feed mechanism 14. Is maintained. When the lifting table 3 completes lowering, the limit switch 13 detects this, operates the electromagnetic solenoid 45, and the lift bar 42 is raised. The lifting table 3 and the forward and backward movement table 15 which have completed the lowering during this time retreat, return to the original position, mount the new sheet material 19 and wait for the next loading. The tip of the ratchet claw 36 moves up against the compression spring 38, such as the roller 37 abutting with the lift bar 42, and the engaging portion 36a moves up the pitching cam 39. The slider 27, which is pulled out of the chuck and pulled by the weight 50, is guided to the guide members 22 and 23 while holding the sheet material 19, and starts to move forward in the direction of the arrow C. When the de-claw 36 is removed from the pitching cam 39, the solenoid 45 is turned off at the same time, and the lift bar 42 is lowered. Accordingly, the tip of the ratchet claw 36 is also downwardly moved so that the next pitching cam ( 39 is engaged with the engaging portion 36a, and the slider 27 is stopped at that position. That is, the slider 27 advances one pitch to carry the sheet material 19 into the machine tool. At the same time as the machining of the first process is completed in the machine tool, the electromagnetic solenoid 45 is turned on again, and the sheet material 19 is moved forward one pitch by the above operation again, and the sheet material 19 is repeated in advance. Load into the machine tool according to the set pitch. When the slider 27 reaches the forward end, the cam 53b provided on the wire rope 46 operates the limit switch 54 for detecting the forward end. As a result, the literal motor 62 starts to rotate, and the electromagnetic clutch 59 which is still broken is also connected. The slider 27 is pulled back by the chain 52, and the cam 53a is limited by the switch. It can be brought into the machine tool continuously by stopping at the starting position, i.e., acting on 54 and turning it off.

Here, the technical configuration that can operate the slider by the operation of the latch by the pitching cam and the operation process according to it will be described in more detail as follows. In other words, the ratchet claw 36 is connected to the glider 27 through the pin 35, and the ratchet claw 36 is made to rotate with the pin 35 as a point. The ratchet claw 36 is pushed downward by the spring 38. However, the ratchet claw 36 is equipped with a roller 37, which is in contact with the upper surface of the lift bar 42 to limit the downward movement. Therefore, in the stationary state, the ratchet claw 36, the roller 37, and the lift bar 42 are in the solid line state shown in the drawing. By the way, since the slider 27 always receives thrust in the left direction, it is engaged with the pitching cam 39. When the operation 44 moves in the right direction, the bell crank 43 rotates about the point, so that the lift bar 42 moves upward. As the lift bar 42 moves upward, naturally the roller 37 is lifted up to a position in the upward direction 37. At this time, the engaging portion 36a of the ratchet claw 36 is out of the pitching cam 39. Since nothing obstructs the movement of the slider 27 in the right direction, the slider 27 starts to move in the left direction. When the slider 27 advances only slightly to the left, the operating section 44 moves next to the left, so that the lift bar 42 descends and returns to its original position (solid line state). At this time, the roller 37 is above the guide cam 41 mounted on the side of the pitching cam 39, and when the lift bar 42 descends, the roller 37 is placed on the upper surface of the guide cam 41. . In addition, when the slider 27 advances to the left direction, the roller 37 advances along the upper surface of the guide cam 41 and is mounted on the upper surface of the lift bar 42 in the lowered state. Accordingly, the guide cam 41 serves as an assistant to facilitate the operation of the ratchet claws 36 until the ratchet claws 36 are removed from the pitching cams 39 and placed on the lift bar 42 in the lowered state. do. The slider 27 then advances to a position where the ratchet claws 36 engage the next pitching cam 39.

As described above, according to the present invention, by adjusting a plurality of pitching cams to a desired pitch in advance, the slider holding the sheet material can be carried in the machine tool sequentially according to this pitch, and in particular, the sheet material printed. In the case of continuous processing, the degree of precision can be ensured and the supply can be made stable.

Claims (1)

The lower part of the slider 27 which has the gripper 33 which hold | maintains the sheet material 19 to carry in to a machine tool, is guided to the guide member 21, 22, and 23, and advancing toward and out of a machine tool. And a plurality of pitching cams 39 which are provided in the threaded rod 40 provided in the advancing direction of the slider 27 and which can adjust the pitch at any position of the threaded rod 40. The pitch set by the pitching cam 39 by providing the ratchet claw 36 and simultaneously moving the tip of the ratchet claw 36 up and down by appropriate means to repeat the engagement and release with the pitching cam 39. A slider feeder of a pitch feeder formed by allowing the slider 27 to move forward according to the present invention.