JPH0726675B2 - Rotation speed adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The disclosed technology belongs to the technical field of the structure of an apparatus that controls the rotation speed of a dried noodle group to an optimum state when the dried noodle group is rotated and bound with a tape.

<Summary of Summary> Therefore, the invention of this application is to transmit a rotational force by tensioning a chain on a sprocket provided on each of a rotating device and a drive device for clamping dry noodles and other products and binding them with tape. Relates to a device for adjusting the rotation speed of a rotating device, and more particularly, to a tension adjusting device such as a sprocket having an idle function in a chain stretched between a drive sprocket and a driven sprocket of the rotating device. Therefore, the invention relates to a rotation speed adjusting device in which the tension adjusting device is provided with a pressing force applying function and a releasing function of an eccentric cam controlled to a set speed.

<Prior Art> As is well known, there are many devices that perform a predetermined work by transmitting a rotational force from one power source to a rotating device, but among them, power transmission and interruption are easily controlled to perform a predetermined work. There are various things to do, and among them, it is better to smoothly perform the transmission and disconnection in the connection area at the time of transmission and disconnection of power, not to mention the durability of the entire device, but also to the inertia for each work device and the object to be processed. It may be preferable in that it does not cause shock or damage due to force.

That is, for example, as shown in FIG. 7, there is a mode in which the dried noodles 1 are weighed and arranged in a predetermined weight for convenience of handling in the market and then bound with the tape 2, which is generally obtained by a binding device. It is used as one plant to convey the dry noodles 1 from a single power source, and when binding the dry noodles 1 via the binding device main body via the tape 2, while clamping the dry noodles 1 and rotating it via a rotating device. There is a mode in which the tape 2 fed from the tape roll is wound by a predetermined number of turns, cut, and conveyed to a next-stage cardboard box or the like. At this time, generally, the starting end of the tape 2 is pushed into the dry noodles 1 and the space between the dry noodles is increased. To the tape 2, a predetermined tension is applied to the tape 2 by the reaction force when the dried noodle 1 is clamped and rotated by a rotating device, and the dried noodle 1 is tightly bound without loosening, but in this case, Dry When the rotation after one of the clamp too early, for easy Noodles 1 itself is individually folded, the tension is too strong relative to the tape 2 at the binding site, there is a problem that a so-called folded noodle like occurs.

By the way, the binding of the dried noodles 1 with the tape 2 has already been disclosed in, for example, the invention of Japanese Utility Model Publication No. Sho 58-174404, but one power source such as a motor is provided in order to simplify the structure of the binding device. From the above, the dry noodles 1 are conveyed and power is applied to the rotating device of the clamp.
For example, about 1/4 of the entire power cycle is distributed to the rotation operation for bundling, and there is a so-called clutch mechanism for connecting and disconnecting the power for this rotation operation, which is shown in FIG. Similarly, the rotation speed V with respect to time t (horizontal axis)
Since the connection and disconnection in the joint area (vertical axis) has a sharp rack-like characteristic due to the electromagnetic clutch, etc., there is a drawback that the power transmission mechanism is heavily consumed by inertial force and durability is deteriorated. Since the rising speed is rapid, the back tension against the tape 2 is too strong, and the dry noodles 1 may be broken or the like.
There was a problem such as breakage.

Further, when the electromagnetic clutch system is used, a brake and a sensor for the start / stop control of the device are mechanically necessary, which makes the structure extremely complicated, and its management, control, and maintenance are very complicated and difficult. There is also the constraint that there is.

By the way, in the electromagnetic clutch system and the like, as shown in FIG. 9, since the rotation speed is a constant speed V after the rotation is started, there is an advantage that the tape 2 can be smoothly bound.

<Problems to be Solved by the Invention> To cope with this, rotational power is obtained from a power source and intermittently engaged and disengaged from a Geneva gear by a crank pin, and a rotational force from the Geneva gear is applied to a rotating device of a clamper such as a chain. As shown in FIG. 8, the rotation speed V (vertical axis) of the rotating device is imparted to the time t (horizontal axis) in a kind of sine curve by transmitting through the Technology that makes it possible to smooth the speed change at the time of connecting and disconnecting the power to the rotating device of the clamper to avoid sudden shock, and especially to prevent broken noodles and tape breaks at the initial stage of rotation. Is being developed.

By the way, in the mode of the Geneva gear using method of the kind, as shown in FIG. 8 at the start of rotation, the rotation speed is low and the speed rises smoothly, so that broken noodles and tape breaks do not occur, but the above-mentioned FIG. As shown in FIG. 8, the speed V during rotation binding cannot be constant, and as shown in FIG. 8, the rotation speed V reaches a peak. Since the noodles are easily broken, if the rotation speed is too high, there is a disadvantage that the tightening with the tape is too strong and the noodles are broken.

Further, such a problem is not limited to the binding of the dried noodles 1, but, for example, when binding the objects to be treated such as wires and wires used in the machine industry with a vinyl tape or the like is too strong, the objects to be treated are distorted or bent. However, there are disadvantages such as permanent deformation that lowers the product value and causes inaccuracy.

<Object of Invention> An object of the invention of this application is to connect the rotation speed of a rotating device with respect to an object to be processed from one power source based on the above-mentioned prior art,
It is a technical issue to solve the problem that the rotation speed in the connection area at the time of interruption and the rotation speed for performing a predetermined work cannot be smoothly connected by the same mechanism. Despite the fact that it can transmit rotational power, it smoothly accelerates and decelerates in the connection and disconnection area, and maintains a constant rotational speed after reaching a predetermined rotational speed. Therefore, it is possible to reduce the initial cost as well as the maintenance cost without a failure, and to provide an excellent rotation speed adjusting device which is useful in the field of using rotation technology in the distribution industry and the machine manufacturing industry.

<Means / Action for Solving the Problem> In order to solve the above-mentioned problems, the structure of the invention of the present application, which is based on the above-mentioned object and has the scope of the above-mentioned claims, supplies an object to be processed by one power source. , Transporting, discharging and distributing power to the operation of auxiliary equipment, and thus the power to the rotary device that gives a rotating action to the object to be processed is driven from the drive sprocket to the driven sprocket of the rotary device through the chain. Therefore, the rising of the power connection at the time of power transmission and the disconnection are performed by engaging the Geneva gear integrated with the drive sprocket of the crank pin at a predetermined timing, and at the time of rising, by the Geneva gear. The sine curve rises gently and is cut off smoothly, and the rotation speed of the rotating device rises smoothly due to the chain. After being accelerated and reaching a predetermined rotation speed, a tension adjusting device having a sprocket having an idle function that engages a chain stretched between the drive sprocket and the driven sprocket of the rotating device is released by the eccentric cam. Then, by disengaging the engagement from the chain, the tension adjusting device separates from the chain at the set constant speed, and therefore, the tension applied to the chain is removed at the set deceleration, so that the set time During this period, a constant rotation speed is transmitted from the drive sprocket to the driven sprocket of the rotating device, and the rotating device rotates the object at a constant rotation speed, and after a set time, it is decelerated to rotate. The object to be processed is given a smooth rotation in the initial stage, a constant speed rotation in the middle period, and a deceleration in the final stage. In which took technical means such rotation is effected to stop.

<Embodiment> Next, one embodiment of the invention of this application will be described below with reference to FIGS. In addition, the same mode parts as those in FIGS. 7, 8 and 9 will be described using the same reference numerals.

The embodiment shown in the drawing is a mode in which the dried noodles 1 as the object to be processed are bundled with the tape 2 as shown in FIG. 7 and supplied to the market. In the mode shown in FIG. 5, 3 is a bundling plant, The apparatus 4 and the combination weighing apparatus 5 for set weight of the dried noodles 1 disclosed in the invention of the applicant's prior invention and put into practical use and the cardboard box 6 are connected via a chain conveyor 7 and a string conveyor 8. .

Then, the dry noodles 1 weighed to a set weight by the combination weighing device 5 are put into holders 11, 11 ... Set at a set pitch on the chain stretched between the drive sprocket 9 and the driven sprocket 10 of the chain conveyor 7. The driving device 15, which will be described later, is driven by the motor 14 of the power source of the binding device 4, which is carried into the binding device 4, lifted by the clamper 13 of the binding device body 12 and transferred like a baton touch, and a rotating device.
A predetermined number of windings are bundled by the tape 2 which is rotated by the set number of rotations 16 and is fed from the tape roll 17, and is again inserted into the holders 11, 11 ... In a baton-touch manner, and is shown on the corrugated cardboard 6 through the string conveyor 8 in FIG. It is designed to be fed in order in a united state.

Then, as shown in FIGS. 2 and 3, a pair of left and right clampers 13 of the binding device body 12 are provided so as to traverse the chain conveyor 7, and each clamper 13 has three inferior arc-shaped clamp pieces 18, 18. , 18 are pivotally connected to each other, and the opening / closing device 19 clamps the dried noodle 1 in a circular cross section, and is integrally connected to the driven sprocket 21 of the rotating device 16 via the rotating shaft 20 to rotate, and the tape 2 By this, the dried noodles 1 are bound together.

Although not shown, when the holders 11, 11, ... Provided on the chain conveyor 7 come directly under the clamper 13, the dried noodles 1 are lifted from the holder 11 by a lift (not shown) and the baton touch is applied to the clamper 13. Clamper
The dried noodles 1 are raised to 13 and clamped.

Thus, as shown in FIG. 1, a chain 23 is stretched between the driven sprocket 21 of the rotating device 16 and the intermediate sprocket 22 having a larger diameter than that, and the intermediate sprocket 22 and the shaft 24 are interposed therebetween. A chain 27 is stretched between an intermediate sprocket 25 having a smaller diameter than that and a drive sprocket 26, and the Geneva gear 29 fixed to the drive sprocket 26 and its shaft 28 emits radiation at 90 ° intervals. A roller 32 pivotally supported at the tip of a crank pin 31 to which a driving force is transmitted from a drive source motor 14 via a chain and a gear mechanism (not shown) is engaged with the notches 30, 30 ... , The drive sprocket 26 and the Geneva gear 29 are intermittently rotated integrally with the chain.
The driven sprocket 21, that is, the clamper 13 of the rotating device 16 is intermittently rotated via 27, 23 and intermediate sprockets 25, 22.

Therefore, as shown in FIG. 8, the rotational speed of the drive sprocket 26 is designed to rotate slowly with a sine curve-shaped speed V (vertical axis) drawn with respect to time t (horizontal axis).

The chain 27 stretched between the drive sprocket 26 and the intermediate sprocket 25 is engaged with a pair of large and small diameter sprockets 33 and 34 side by side, which will be described in detail below. The rotation speed adjusting device 35, which is one of the gist of the invention of this application shown in FIG. 4, is arranged so as to conjugately move toward and away from each other, and the tension side and the slack side of the chain 27 are alternately placed in a tensioned or relaxed state. The tension is adjusted and controlled.

In the embodiment shown in FIG. 1, the tension side is strained,
The loose side is in a relaxed state, and the state indicated by the alternate long and short dash line is the opposite state.

Thus, one large-diameter sprocket 33 is loosely fitted to the eccentric cam 37 fixed to the shaft 36 to form a sprocket having a kind of idle function, and the other small-diameter sprocket 34 is also a chain 27. In contrast, a sprocket having an idle function is formed to form a tension adjusting device together.

Then, as shown in FIG. 4, the shaft 36 of the eccentric cam 37 of the large-diameter sprocket 33 of one of the tension adjusting devices has the fourth
As shown in the figure, a pinion 38 is provided at one end of the pinion 38, and the pinion 38 engages with the arc racks 40, 40 ... Has been done.

Further, with respect to the partial gear 39, another pinion 41 is arranged at a position where the phase is 180 ° different from that of the pinion 38.
It is designed to stop rotation intermittently like 38.
The cam 43 is adapted to rotate intermittently via the shaft 42,
The cam 43 is urged by a resilient spring 46 so that the base end of a cam follower lever 45 pivotally supported via a shaft 44 is always in contact with the cam 43, and a shaft 47 fixedly mounted on the tip thereof. The other sprocket 34 of the tension adjusting device is fixed.

Then, the partial gear 39, as shown in FIG.
Since the Geneva gear 29 is integrally connected to the Geneva gear 29 by the shaft 28, when the Geneva gear 29 is intermittently rotated by the crank pin 31, the partial gear 39, the pinion 38, and the eccentric cam 37 move the idle sprocket 33 and the pinion 41. , The cam 43 and the cam follower lever 45 are arranged so as to automatically control the sprocket 34 so as to conjugately and alternately give tension and relaxation to the pulling side and the loosening side of the chain 27. .

The partial gear 39 mechanically has a pressing force applying function and a releasing function structurally.

Then, as shown in FIG. 1, the rotational force of the drive sprocket 26 is transmitted to the intermediate sprocket 25 via the pulling side of the chain 27. From the solid line state shown, that is, the tension side (left side in the figure) is tensioned and the rotational force of the drive sprocket 26 is directly transmitted to the intermediate sprocket 25, the sprocket as a tension adjusting device by the rotation speed adjusting device 35.
When 33 is rapidly separated from the chain 27 from the solid line state to the one-dot chain line at a set speed, the chain 27 loosens from the solid line state to the two-dot chain line state, and the solid line state and the two-point state change from the tension state to the relaxation state. While absorbing the length of the chain 27 during the chain line state, the rotation speed of the intermediate sprocket 25 is reduced, so that the roller 32 of the crank pin 31 is passed through the notch 30 of the Geneva gear 29 as shown in FIG. Even if the Geneva gear 26 is rotated in an accelerating state while controlling its rotation speed in a sine curve, a deceleration state is given before the rotation speed reaches its peak, and as a result, as described above, On the tension side, while the chain 27 absorbs the length of its looseness from the solid line state to the two-dot chain line state,
The rotation speed becomes a constant speed in the plateau state by deceleration, and is controlled to a constant rotation speed V as shown in FIG. 6. Also, regarding the change from the solid line state of the chain 27 to the one-dot chain line state, the other tension adjustment is performed. The sprocket 34 of the device will also conjugately control the rotational speed via the partial gear 39 and pinion 41.

The process in which the roller 32 of the crank pin 31 disengages from the notch 30 of the Geneva gear 26, that is, when deceleration starts in FIG. 6, the sprocket 33 of the tension adjusting device again approaches the pulling side of the chain 27 and presses it. The idle sprocket 34 of the other tension adjusting device is separated from the solid line state to return to the initial state, and as a result, the clamper 13 clamps the dried noodles 1 and starts rotating at an accelerated speed, so that the rotation speed is predetermined. When the speed is reached, the driven sprocket 21 rotates at a constant speed as shown in FIG. 6, so that the clamper 13 clamps the dried noodles 1 and the rotating device 16 starts to rotate. The rotation speed of the noodles rises slowly and smoothly, and when the rotation speed reaches a predetermined speed, the rotation speed is controlled to a constant speed, and the dried noodles 1 using the tape 2
The binding of the dried noodles 1 is controlled so that the binding of the noodles is performed smoothly, and at the end of the binding, the noodles are slowly decelerated and stopped.
In particular, the binding is performed so that bent noodles and the like do not occur in the surroundings.

In the above-described configuration, when the dry noodles 1 are continuously loaded into the combination weighing device 5 by a conveyor (not shown), predetermined combination weighing is performed, and each set weight value is measured, the dry noodles 1
Is thrown into each holder 11 of the chain conveyor 7 which intermittently circulates by the drive sprocket 9 and the driven sprocket 10 and fed to the binding device 4, and when it comes directly below the clamper 13 of the binding device main body 12, it stands by. Is lifted by being lifted by a lift (not shown), pushed into each of the clamp pieces 18, 18, 18 in the open state and in the standby state of the clamp 13 and clamped, and at that time, it is rotated at a constant speed by the motor 14. Crank pin 31 roller 32 is Geneva gear
The notch 30 of 29 is engaged with the notch 30, and the rotational force is transmitted to rotate the drive sprocket 26 at a sine curve-shaped rotational speed shown in FIG. 8, whereby the chain 27, the intermediate sprockets 25, 22, The driven sprocket 21 of the rotating device 16 is rotated through the chain 23.

As described above, since the Geneva gear 29 rotates intermittently, the rotating device 16 also rotates intermittently, during which the dry noodles 1 are intermittently conveyed from the holder 11 of the chain conveyor 7 to the lift and from the lift to the clamper 13 as described above. , Transfer clamp is performed synchronously.

When the dried noodles 1 are clamped by the clamper 13, the eighth
As shown in the figure, the rotation speed is given to the rotation device 16,
As shown in FIG. 6 for the control by the rotation speed adjusting device 35, the initial rotation speed is accelerated similarly to the case shown in FIG. 8, the rotation speed is gradually increased, and the binding by the tape 2 is substantially performed. Starting from, the sprocket 33 of the tension adjusting device is operated at a set speed from the tension side of the chain 27 via the eccentric cam 37 by the action of the partial gear 39 and the pinion 38, 41 of the rotation speed adjusting device 35 which also constitutes the pressing force releasing device. Rapid separation,
Also, the other sprocket 34 as a tension adjusting device.
Starts to press the loose side, whereupon the chain 27 shown in the solid line state in FIG. 1 shifts to the loose state shown by the chain double-dashed line. , Its speed is reduced, so that the intermediate sprocket 25, that is, the intermediate sprocket 22, also has a constant rotation speed, and the driven sprocket 21 of the rotating device 16, that is, the clamper 13 also has a constant rotation speed. The peak shown in FIG. 6 is set to the rotation speed of the plateau state at a constant speed, so that the binding of the dry noodles 1 with the tape 2 has a constant tension with respect to the tape 2 and the broken noodles around the dry noodles 1 are broken. The product is not bound and the product yield is prevented from being lowered.

Then, in the process in which the roller 32 of the crank pin 31 is disengaged from the notch 30 of the Geneva gear 29, the rotation speed adjusting device 35
The pinion 38, 41 reaches the end of engagement with the arc rack 40 of the partial gear 39 that also serves as the pressing force releasing device, and the eccentric cam 37, the cam 43, and the cam follower lever 45 cause the sprocket 33, 34 of the tension adjusting device to The former applies a pressing force close to the chain 27 on the tension side, and the pressing force is reduced on the slack side to separate them, and the intermediate sprockets 25, 22, that is, the rotating device 16 The driven sprocket 21 is decelerated and stopped, the clamper 13 is opened, and the dried noodles 1 bound together are baton-touched by the lifts and lowered, and again transferred to the lifts 11 of the chain conveyor 7 that intermittently circulates again, and the string conveyor 8 is moved. And the string conveyor 8 transfers the bound dry noodles 1 to the cardboard box 6.

Then, the crank pin 31 is continuously rotated by the motor 14, and again enters and engages with the notch 30 of the Geneva gear 29, so that the drive sprocket 26 is chained by the chain 27.
The rotation device 16 starts rotating again with respect to the clamper 13 that clamps the next dry noodles 1 through 5, 22, and the chain 23.
Until the initial rotation speed of the Geneva gear 29 is accelerated and reaches a predetermined rotation speed, even if the partial gear 39 rotates integrally with the Geneva gear 29, the pinions 38, 41 rotate in the portion without the arc rack 40. Therefore, the sprocket 33, 34 of the tension adjusting device maintains the posture in which it pushes the chain 27 on the pulling side and separates on the loosening side as shown by the solid line state in FIG. No deceleration control is performed.

In this way, the holders 11, 11 of the chain conveyor 7 are sequentially
The binding of the dried noodles 1 intermittently conveyed by the binding by the binding device main body 12 of the binding device 4 via the tape 2 is performed as designed, and the initial acceleration state is promptly performed during the binding. The process of applying bundling at a high speed, then smoothly decelerating and stopping the rotation is repeated, and the bundling operation is continuously performed with high efficiency.

Of course, the embodiment of the invention of this application is not limited to the above-mentioned embodiment. For example, in the tension adjusting device, an idle shoe or an idle roller may be adopted in addition to the sprocket having the idle function. Also, the eccentric cam may be of a link lever type or the like.

Further, in a mode in which the Geneva gear is not attached to the drive sprocket, a tension adjusting device is provided as desired for the driven sprocket continuously rotating at a constant speed, and the tension of the chain is released by the pressing force releasing device so that the rotation speed of the rotating device is increased. Various modes such as deceleration and control so as to accelerate or decelerate the rotation speed can be adopted.

Further, it goes without saying that the object to be processed is not limited to dry noodles, but can be applied to spaghetti, incense sticks, wire and the like.

And, it goes without saying that the equivalent device and means included in the scope of the claims of the invention of this application include application to a belt pulley instead of the chain sprocket.

<Effects of the Invention> As described above, according to the invention of the present application, in a rotating device for a processing object such as a binding device that binds a processing object such as dry noodles with a tape, the start-up is smoothly accelerated in the initial stage of the processing work. However, it can be controlled to become a constant speed after reaching a predetermined rotation speed, and can be smoothly decelerated and stopped at the end of rotation, and further, acceleration, deceleration stop, etc. such as a sudden rise due to an electromagnetic clutch etc. Since it does not have a shocking load due to inertial force on the device or the processed object, not only has the effect of improving the durability, but also applies a large tension to the processed object such as dry noodles The excellent effect of not causing a phenomenon such as a drop in product value due to a trouble caused by the occurrence of the above is exhibited.

Further, since it is only necessary to apply a predetermined rotational force to the drive sprocket, there is an advantage that the device does not become complicated by attaching an electromagnetic clutch or a sensor.

Further, since the tension adjusting device for the chain stretched between the drive sprocket and the driven sprocket is operated in a state of being linked to the drive sprocket while also acting as the pressing force releasing device, the pressing force releasing device is also set at a set rapid speed. When the tension adjusting device is separated from the chain, the rotational speed of the driven sprocket is reduced during the time until the slack of the chain is restored in the process of separating from the chain. The excellent effect that the rotation speed of the rotating device is decelerated to a constant rotation speed or the like and the rotation is smoothly given without applying an unreasonable force to the object to be processed or the device is achieved.

[Brief description of drawings]

1 to 6 are explanatory views of an embodiment of the invention of this application, FIG. 1 is a schematic side view of a rotational force transmission mechanism from a driving side to a driven side, and FIG. 2 is a schematic perspective view of a clamper. FIG. 3 is a partial front view of the same, FIG. 4 is a schematic perspective view of the mechanism of the rotation speed adjusting device, FIG. 5 is a schematic side view of the entire device, and FIG. 6 is a graph showing the relationship between rotation speed time and speed. FIG. 7 is a perspective view of the bundled dried noodles, and FIGS. 8 and 9 are graphs showing the relationship between the time equivalent to FIG. 6 and the rotation speed based on the prior art. 16 …… Rotating device, 21 …… Sprocket, 15 …… Drive device, 26 …… Drive sprocket 35 …… Rotation speed adjusting device, 27 …… Chien, 33 …… Idle sprocket, 33,34 …… Tension adjusting device

Claims (2)

[Claims] 1. A rotation speed adjusting device in which a sprocket of a rotating device and a sprocket on a driving side are linked by a chain, and is stretched between the sprocket of the rotating device and the sprocket on the driving side. An idle gear for tension adjustment is engaged with the chain, a Geneva gear is fixedly mounted on the drive sprocket, and a crank pin is attached to the Geneva gear so that the crank pin can be engaged and disengaged. Via one sprocket having an idle function linked to a partial gear fixedly mounted on the Geneva gear, an eccentric cam loosely fitted to this, and a cam follower lever engaging with another sprocket linked to the partial gear. The other swinging sprocket having an idle function is engaged with the chain. Rotation speed adjustment device, characterized in that there. 2. The rotation speed adjusting device according to claim 1, wherein the tension adjusting device is a shoe having an idle function.