JPS625791Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has first and second one-way meshing clutches and a one-swinging meshing clutch, and even when continuously feeding at a constant pitch, the feed roll The present invention relates to a roll feeding device that allows the feeding pitch of a roll to be easily and reliably changed instantaneously with a so-called one touch.

Conventionally, roll feeding devices have been widely used that use a one-way meshing clutch to swing the drive member to feed, for example, a hoop material at a predetermined pitch using a feed roll, but in order to change the feeding pitch, In order to change the swing angle of the drive member of the one-way mesh clutch, change the position of the crank pin provided on the drive member, or change the mounting radius on the rotation shaft of the connecting rod that connects the crank and the rotation shaft. This required a lot of work, and the work was tedious. Moreover, in order to instantaneously switch between feeding at a different pitch and the next cycle during a feeding operation at a constant pitch, it is necessary to perform the above operation in a short period of time, and the synchronization mechanism etc. becomes complicated and expensive.

The purpose of the present invention is to provide a roll feeding device that solves the above-mentioned problems by making it possible to change the feed pitch of the feed roll instantaneously with a single touch. An embodiment of the present invention will be described with reference to the drawings, taking as an example a case in which the present invention is employed in a press device for perforating holes.

In the figure, the device 1 of the present invention has first and second one-way mesh clutches 4 and 5 attached to a roll shaft 3 that rotates a feed roll 2, and is arranged parallel to and concentrically with the roll shaft 3. It includes a swinging meshing clutch 9 that can engage and disengage between the intermediate shaft 6 and the connecting shaft 7, and first to fourth gears 10, 11, 12, and 13. First,
In this embodiment, the second one-way meshing clutches 4 and 5 have, for example, a non-circular cam interposed between the inner ring, which is a driven member, and the outer ring, which is a driving member, so that the inner ring is moved only when the outer ring rotates in one direction. Various well-known one-way meshing clutches, such as driveable meshing clutches, can be employed, and their driven members, for example, inner rings, are fixed to the roll shaft 3 so that the meshing rotation direction is uniform. The feed roll 2 feeds the hoop material H intermittently between the presser roller 15 and the rotary plate 17 attached to the outer end of the press crankshaft 16 that perforates the hoop material H. By connecting via a connecting rod 20 to a crank 19 attached to the drive member of the clutch 4, the drive member of the first one-way meshing clutch 4 is oscillated for each revolution of the press crankshaft 16. sell. As shown in FIGS. 2 to 4, the swing engagement clutch 9 includes a ratchet pawl 22 and a ratchet 23. The L is pivoted and bent into a dogleg at the pivot point.
A lever 26 in the shape of a letter 26 is integrally formed. Further, the ratchet pawl 22 has a tip protrusion 27 protruding toward the center side of the ratchet outer ring 24, that is, inwardly, at the tip thereof, and is supported by a spring 29 interposed between the ratchet pawl 22 and the inner surface of the ratchet outer ring 24. It is biased so that it can rotate outward. The ratchet 23 is fixed to the connecting shaft 7, and each tooth 23a is provided with a locking recess 23b on the side that engages with the ratchet pawl 22, into which the tip projection 27 can be fitted. Reference numeral 31 denotes a push rod that can move forward and backward, and in its forward position, the ratchet outer ring 2
4, the lever 26 can come into contact with the lever 26 near the end of its swing, and by rotating the ratchet pawl 22, the tip protrusion 27
is fitted into the locking recess 23b of the ratchet 23,
The ratchet pawl 22 and the ratchet 23 can be irremovably engaged, and the indexing angle of each tooth of the ratchet 23 is set slightly smaller than the swing angle of the ratchet outer ring 24 to prevent the ratchet pawl 22 and the ratchet 23 from engaging and disengaging. Make it smooth.

The first gear 10 is fixed to the driving member of the first one-way mesh clutch 4 and meshes with the second gear 11 attached to the intermediate shaft 6, and the third gear 12 is fixed to the connecting shaft 7. and meshes with the fourth gear 13 attached to the drive member of the second one-way meshing clutch 5, and the first to fourth gears 10, 1
1, 12, 13, the fourth gear 13 is the first gear 1
The gear train is set so that the speed can be increased compared to zero, and a brake 33 is attached to one end of the connecting shaft 7 to prevent ellipse.

However, in the device of the present invention, when the push rod 31 is retracted, the ratchet pawl 22 is located outward as described above, and therefore the ratchet 23
The one-swing engagement clutch 9 is released without engaging with the press crankshaft 16 and the rotary plate 17, and as a result, the connecting rod 20 and the crank 1 rotate.
a first one-way dog clutch 4 which pivots via 9;
The driven member is driven by the drive member of the roll shaft 3.
The feed roll 2 feeds the hoop material H at a predetermined pitch by rotating the hoop material H at intervals. At this time, due to the meshing of the first and second gears 10 and 11, the ratchet outer ring 24 of the one-way dog clutch 9 swings together with the ratchet pawl 22, while the second one-way dog clutch 5
Since the meshing direction of the meshing member is the same as that of the first one-way meshing clutch 4, the driving member 4 is stationary. Next, the push rod 31 is advanced so that it comes into contact with the lever 26 near the end of the swinging motion of the lever 26, and the ratchet claw 22 is rotated so that the end protrusion 27 of the ratchet 23 engages the ratchet claw 22 in the next swinging motion. The latch 23 is engaged by being fitted into the locking recess 23b, thereby rotating the ratchet 23 in its forward stroke. 1st to 4th gear 10
-13 are set to increase the speed, so as the connecting shaft 7 rotates, the second one-way mesh clutch 5 is moved to the first position.
By rotating the roll shaft 3 and the feed roll 2 by an angle greater than the feed speed of the direction mesh clutch 4, the feed pitch of the feed roll 2 can be instantly changed and increased in the next cycle. At this time, the driven member of the first one-way dog clutch 4 is loosely moving between it and its driving member. In addition, the swing engagement clutch 9 releases the spring 2 in its return stroke as the push rod 31 retreats.
9, the ratchet pawl 22 returns to its original position, and as the ratchet pawl 22 is disengaged, the one-swing engagement clutch 9 is automatically and instantaneously released in the next cycle.

In this way, in the device of the present invention, the feed pitch of the feed roll 2 can be changed instantaneously with a single touch by moving the push rod 31 forward and backward.
Further, by holding the push rod 31 in the forward position, it is possible to continuously perform drilling with large pitches, and the drilling pitch can be freely changed.

As described above, the device of the present invention includes first and second one-way meshing clutches, one-swinging meshing clutch, and first to fourth gears, and can extremely easily feed different pitches using the feed roll. possible. Moreover, the single-swing mesh clutch allows the change to be made instantaneously and with one touch even during operation, making the change easy and reliable. In addition, in the device of the present invention, by arranging the second and third intermediate shafts and connecting shafts, which are linked by gears, in parallel around the roll shaft, it is possible to feed rolls of even more types of pitches, and the present invention This device can be used not only as a perforation device for hoop materials, but also as a feeding device using various feeding rolls, such as packaging devices and printing devices.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view showing one embodiment of the device of the present invention, Figs. 2 to 4 each show one swing engagement clutch, Fig. 2 shows a state in which the ratchet pawl is disengaged, and Fig. 3 shows a state in which the push rod is engaged. FIG. 4 is a front view showing the pressed state and the engaged state. 2...Feed roll, 3...Roll shaft, 4...First one-way mesh clutch, 5...Second one-way mesh clutch, 6...Intermediate shaft, 7...Connection shaft, 9...
...Swinging mesh clutch, 10...First gear, 11
...Second gear, 12...Third gear, 13...
Fourth gear, 22... Ratchet pawl, 23... Ratchet, 23b... Locking recess, 27... Tip projection, 31... Push rod.

Claims (1)

[Scope of utility model registration request] The driven members of the first and second one-way meshing clutches having the same meshing rotation direction are fixed to the roll shaft that rotates the feed roll, and the driving member of the first meshing clutch is given a swinging motion; An intermediate shaft disposed parallel to the roll shaft and a connecting shaft disposed concentrically with the intermediate shaft are connected to a ratchet pawl that is pivotally supported by the intermediate shaft and has a tip projection protruding inside the tip portion. a ratchet which is fixed to a shaft and has a locking recess into each tooth into which the tip projection can be fitted, and the ratchet pawl comes into contact with a push rod that can move forward and backward, thereby engaging the tip projection with the locking recess. The ratchet pawl and the ratchet can be engaged and disengaged by a one-swing engagement clutch which can irremovably engage with each other only during the forward stroke of one swing motion, and further includes a driving member of the first one-way engagement clutch and an intermediate shaft; The connection shaft, the drive member of the second one-way mesh clutch and the intermediate shaft, and the connection shaft and the drive member of the second one-way mesh clutch are connected by first to fourth gears that increase the overall speed. Characteristic roll feeding device.