KR830000958Y1 - Sheet feeder of pitch feeder - Google Patents

Abstract

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Description

Sheet feeder of pitch feeder

The drawing 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 part notch.

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

6 is a cross-sectional view taken along the line VI-VI of FIG. 4;

7 is a cross-sectional view taken along the line VII-VII of FIG.

8 is a detailed view of the lift bar drive portion.

9 to 10 are detailed views of the slider drive.

The present invention relates to a sheet material feeder for positioning and supplying a sheet material to a feed mechanism of a pitch feeder for carrying a sheet material into a machine tool such as a press.

As a known technique for sheet material conveying apparatus for positioning and supplying sheet material to a feed mechanism of a pitch feeder, there is one disclosed in Japanese Laid-Open Utility Model Publication No. 49-86489, but it conveys per pitch of the workpiece material. This is achieved by repeating the gripping forward, release, and retreat operations, and has a disadvantage of being quite inconvenient because the length of the conveying pitch during recoil is constant.

It is an object of the present invention to provide a sheet material conveying device of a pitch feeder which enables the position of the next sheet material to be loaded while the sheet material is being loaded by the feed mechanism, thereby quickly supplying the sheet material to the feed mechanism, thereby improving productivity. It is to promote

Hereinafter, an embodiment of 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 FIGS. . As is apparent from FIGS. 1 and 2, a plurality of lift racks 4 are provided in the lower part of the elevating table 3, and in the vicinity of these raft racks 4, which are orthogonal to the 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 bag 7 provided in a horizontal direction, respectively, and thus, these racks 4 are fitted. And (7) are interlocked with each other, and the tip of the piston rod 9a of the lift cylinder 9 is connected to the drive 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 piston 6b to the head shaft is accommodated inside.

A fluid supply pipe 12 such as air is connected to the head side of the lift cylinder 9, and the elevating table 3 is lowered by supplying fluid from the fluid supply pipe 12 to the head side of the lift cylinder 9. Moreover, the lifting table 3 is raised by the action of the compression spring 11 by stopping the supply of the fluid. In addition, (13) is a limit switch which detects the completion | finish of descent of the lifting table 3, and operation | movement of the feed mechanism 14 mentioned later is started simultaneously with this limit switch 13 turning on.

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 the rollers 16 guided to both sides of the elevating table 3 are inserted into the lower surface to rotate freely. The front and rear motion table 15 can smoothly move forward and backward in the downward 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 front and rear motion 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 the long holes 17a to the back and forth 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 | seat material 19 into these pins 20, the sheet | seat material 19 can be positioned with respect to the front-back motion 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 14 has guide members 21, 22, and 23 as shown in FIG. 3 or less in the feed direction (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 a 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 guided. It is mounted along the inside of the member 21 for movement. It is mounted along the inside of the guide member 21 for movement. The outer side of the guide member 21 is provided with a bolt 25 and a pull bolt 26 alternately pushed in the longitudinal direction, and these pushers are guided by adjusting the bolt 25 and the pull bolt 26. While the degree of 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 guided by the electric light in contact with the guide member 22 side of the slider 27 is rotatably fitted, and the electric side guides by contacting the guide member 23 on the opposite side. The movable side guide roller 29 is fitted in a rotational manner. The shaft rod 30 in which the movable side guide roller 29 is fitted is moved slightly in the folding direction of the guide member 23. A guide roller that is pressed against the movable shaft guide roller 29 and the guide member 23 by a compression spring 31 that biases the shaft rod 30 and receives a radial load in the lower portion of the slider 27 ( 32) is inserted. 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. The upper jaw 33b is rotatably provided at the upper portion of the lower jaw 33a, and the piston rod 34a of the gripper cylinder 34 mounted on the slider 27 at the end of the upper jaw 33b. Since the tip is crushed, the gripper cylinder 34 lowers the tip of the upper jaw 33b so that one end of the sheet material 19 to be transferred between the upper jaw 33b and the lower jaw 33a can be bitten. have. In the lower part of the slider 27, a claw 36, such as a latcher, whose base end is fitted to the pin 35, is provided. This ratchet claw 36 has an engaging portion 36a downward on the tip side, and a roller 37 is provided on the shaft 36b on the side, and the tip portion is lowered by the compression spring 38. The pitching cam 39 provided below the slider 27 is inserted into the screw ball 40 which is transversely arranged along the moving direction of the slider 27, and moves along the screw rod 40. As shown in FIG. At the same time, by screwing both sides of the immersion cam 39 with the double nut 40a screwed into the screw rod 40, the screw rod 40 can be fixed to arbitrary positions at 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 below, and the ratchet claw 36 is fixed. There is provided a lift bar 42 for opening the engagement of the pitch cam 39 of 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 operating rod 44 by the electromagnetic solenoid 45, whereby each bell The lift bar 43 transversed between the cranks is allowed to move up and down while keeping the 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 (, 48) fitted to the support block 24, and extends downward of the pedestal 2 above the pulley 49 (ninth) A weight 50 is attached on the way, and the end of the wire rope 46 is attached to one end of the chain 52 after bypassing the pulley 61 mounted on the lower part of the pedestal 2. 53a is a cam for detecting the forward end of the slider 27 by acting on the limit switch 55 and a cam for detecting the literal end by acting on the limit switch 54. The chain 52 The other end side of the side bypasses the sprocket 56 provided on the pedestal 2 and 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 rotary shaft 58 fitted to the bearing 57, and an electromagnetic clutch 59 is provided in the middle of the rotary shaft 58. As shown in FIG. The electromagnetic clutch 59 is turned on and off by the limit switches 54 and 55 to interrupt the rotation shaft 58 between the pulley 60 rotatably fitted to the rotation shaft 58, The pulley 60 is linked with the literal motor 62 via the belt 61 (see FIGS. 9 and 10). Point A also indicates the center of the 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 tooth deciding plate 17 is adjusted in accordance with the opening 19a opened in the sheet material 19, and the desired pitch is obtained. 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). The slider 27 is conveyed on the back and forth table 15 in this state. The sheet material 19 is placed, the positioning plate 17 is positioned, the back and forth movement table 15 is moved to the forward direction end, and the gripper 33 of the slider 27 waiting at the start end is placed. One end of the sheet material 19 is clamped. When the gripper 33 clamps the sheet material 19, the fluid pressure is supplied to the lift cylinder 9, and the front and rear motion table 15 is lowered like the lifting table 3, so that the hole of the sheet material 19 ( At the same time as the pilot pin 20 is released from 19a), the sheet material 19 is bitten by the gripper 33 on each guide member 21, 22 and 23 of the feed mechanism 14. Stays in the state. 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 is pitched cam 39. The slider 27, which is pulled out of the cage 50 and is towed to the weight 50, is guided to the guide members 22 and 23 without holding the sheet material 19, and starts to move forward in the arrow C direction. When the toenail 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 toenail 36 is also downwardly moved to 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 and carries the sheet material 19 into the machine tool. At the same time as the processing of the first process is completed in the machine tool, the solenoid 45 is turned on again, and the sheet material 19 is advanced one pitch by the above operation again, and the sheet material 19 is preliminarily while repeating the above operation. 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 58, which is still broken, is also connected. The slider 27 is pulled back by the chain 52 and the cam 53a is retracted. It acts on the limit switch 55 and can be carried in to a machine tool continuously by stopping at the starting position, ie, at the start end.

Here, to describe the operation process of the lifting table 3 and the forward and backward table 15 in more detail, first, the lifting table 3 is in the state of lift-up, and the forward and backward table 15 at the beginning of the feeder operation. Is at the retraction end (position in figure 1). Next, the sheet material 19 having the two holes 19a is fitted in line with the piloted 20 at the tip of the positioning plate 17 fastened to the back and forth movement table 15 with the screw 18. Then, the back and forth movement table 15 on which the sheet material 19 is placed is moved to the forward diagnosis by hand. At this time, the sheet material is placed on the upper surfaces of the guide members 22 and 23.

Next, when the sheet material 19 is clamped by the gripper 33, the lifting table 3 is lowered by the operation of the lift cylinder 9.

At this time, the forward and backward movement table 15 is also naturally lowered (because the forward and backward movement table is attached to the elevating table by the roller 16), and when the elevating table 3 is lowered, the sheet material 19 is guide member 22, Since it remains on the upper surface of 23, the pilot pin 20 is removed from the sheet material. Therefore, at this point, the sheet material 19 becomes independent of the lifting table 3 and the back and forth movement table 15 and the pilot pin 20.

Subsequently, the back and forth motion table 15 on the lifting table 3 in the lowered state is returned to the position (the position in FIG. 1) of the one-rear end by hand. And the other sheet | seat material 19 can be plugged in by (2). The lifting table returns to the state of lift-up again when feeder transfer completes one cycle. In addition, the technical structure of the positioning plate 17 is as follows. The positioning plate 17 is fixed to the back and forth movement table 15 by screws 18, and the groove 17a is intended to be able to freely move back and forth and to the left and right as much as the positioning plate 17 can be. It serves to assist the fixing by the screw 18 of the positioning plate 17. In FIG. 1, two platens are attached to the plate 17, and the pilot pin 20 is inserted into the plate 17. Is filled.

As described above, the present invention includes a lifting table and a back and forth motion table for back and forth a movement on the foot table, and a positioning means for determining the position of the sheet material on the back and forth table is provided. After supplying the ash, after retreating with the forward and backward table lowered, it is possible to position the new sheet ash at the return position and to wait for the next loading, thereby feeding the next sheet material at the same time as the sheet ash loading material by the feed mechanism. Since it can supply to a mechanism, time required for supplying and carrying in a sheet material can be shortened, and productivity can be improved significantly.

In addition, by linking the elevating movement of the elevating table and the elevating movement of the elevating table with the feed mechanism, the sheet material can be automatically supplied and loaded.

Claims (1)

On the support frame 2 provided near the feed position of the sheet material 19, a lifting and lowering movement table 3 freely lifting and lowering is provided by appropriate lifting means, and the lifting and lowering movement is placed on the lifting and lowering movement table 3. A hole 19a which is guided to a part of the table 3 and provided with the back and forth motion table 15 in which the back and forth motion is provided in the feed position direction, and is drilled in the sheet material 19 on the back and forth motion table 15. A sheet feeder for sheet feeder of a pitch feeder formed by providing a crystal plate (17) for positioning a sheet material (19) by inserting a pilot pin (20) into a groove.