JPH0610060B2 - Cutting and winding control device for winder - Google Patents

Description

The present invention relates to a control device of a cutting and winding device for winding a sheet cutting end on a new winding core in a continuous automatic winding machine.

(Prior Art) A conventional winding machine, for example, a roll (R) wound at a first winding position (I) as shown in FIG. 2 was transferred to a second winding position (II) and became empty. The new winding core (C) is supplied to the first winding position (I), and the cutting blade (1) is run right before the new winding core (C) in a direction orthogonal to the traveling direction of the sheet (S), and the sheet (S In the winder in which the sheet cutting end (2) is wound around the new winding core (C) after the cutting of (1), the cutting end (2) is normally the sheet speed V _S cutting blade traverse speed V _C As a result, it is formed obliquely as shown in FIG.

Then, when winding the cut end (2) around the new winding core (C), an adhesive force is applied to the oblique tip (2) 'of the cutting (for example, by spraying an adhesive), and the portion is newly wound. The method is to stick it to the core (C) and then to wrap the cutting edge (2) as the cutting progresses, but in this case, the adhesion point (P) advances as the sheet (S) runs. However, it is necessary to adjust the timing so that the cutting blade (1), which has traveled laterally, passes through this portion when it reaches just before the cutting position.

If the timing of passing the cutting blade (1) is too early, the distance between the adhesive force imparting point (P) and the cutting tip (2) ′ becomes large, and the cutting tip is bent and wound around the new winding core (C). On the contrary, if the timing of passing the cutting blade (1) is too late, the point of adhesion is given.
Since the cutting blade (1) runs after (P) has passed the cutting position, the tacking point (P) comes to be located on the winding end side of the full roll (R), and the new core ( This is because the cut end cannot be wrapped around C).

Therefore, as a means for adjusting the timing requiring accuracy in this way, conventionally, the time when the adhesive force imparting point (P) arrives at the cutting position and the cutting blade (1) arrives at the edge required portion of the sheet (S). Then, find the position of the cutting blade (1) so that the time to start cutting the sheet (S) is equal, provide a sensor (such as a proximity switch) at that position, and the cutting blade (1) passes the position. At that time, the injection command for applying the adhesive was transmitted.

(Problems to be Solved by the Invention) However, when the means and apparatus as described above are used, the position of the sensor has to be readjusted every time the seat width or the traveling speed V _{S of the} seat changes. It required work, and its position was also set on the scale, which made it inaccurate and forced to readjust it after trial.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cutting and winding control device that solves the above problems and can always obtain an appropriate adhesive injection timing regardless of operating conditions.

(Means for Solving the Problems) Therefore, the features of the present invention that meet the above-described object are a cutting blade that laterally travels in the sheet traveling direction and cuts the sheet, and a sheet with respect to a cutting traveling line of the cutting blade. In a winding machine provided with an adhesive applying device for applying adhesive to a portion which becomes an oblique tip when the sheet is cut upstream of the running direction, an adhesive applying command is issued from the origin of the cutting blade running at a required speed. A calculation device that calculates and calculates the required travel distance to an appropriate position using the sheet width and the seat travel speed as parameters, and the cutting blade position detection that detects the travel distance from the origin of the cutting blade during travel from moment to moment. The output values of the device and the both devices are input-compared, and when the cutting blade travel distance detected by the detection device matches the distance calculated by the calculation device, an adhesive application signal is transmitted to the adhesive application device. It is equipped with a control device composed of a comparison device.

(Operation) In the cutting and winding control device of the present invention having the above configuration, when the sheet width and the sheet traveling speed are preset in the arithmetic unit,
The arithmetic device uses these values as parameters to calculate the required travel distance of the cutting blade from the origin on the cutting blade travel line to the proper position where the adhesive application command should be transmitted. The calculated value is sent to the comparison device.

On the other hand, when the cutting blade starts traveling, a pulse is emitted at regular intervals, and the cutting blade position detection device receives this pulse and detects the traveling distance of the cutting blade moment by moment.

Then, this detection result is also sent to the comparison device and compared with the required travel distance calculated by the calculation device. If the two values match, an application command such as adhesive injection is sent to the adhesive application device. To be done.

As a result, the adhesive is applied to the sheet, and when the applied portion reaches just before the cutting blade running line, the cutting blade that has traveled laterally passes through this position and is accurately adhered to the oblique tip of the cutting. The agent will be applied.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an explanatory view of a cutting and winding control device according to the present invention, in which a cutting blade (1) is towing a chain (4) stretched in a machine frame along a guide rail (not shown). To make it run laterally. (M) is a drive motor for the chain (4), which drives the cutting blade (1) to the right or to the left depending on its forward and reverse rotation. In addition, (3) in FIG. 2 is an adhesive injection nozzle which is an example of an adhesive applying device, and adheres to a position on the sheet (S) that is a distance (B) away from the cutting blade (1) upstream. The agent is sprayed. CL in FIG. 1 is the center line of the machine, X ₀ is the origin of the cutting blade (1), and the distance from the machine center CL to the origin X ₀ of the cutting blade is D, W is the sheet width. XX is the running line of the cutting blade (1).

The sheet (S) is a row in the direction of an arrow at V _S becomes speed, the cutting blade (1) cutting the sheet (S) while traveling in the direction of the arrow on the cutting traveling line (X-X) by V _C becomes rate To go. At this time, the inclination α of the cut edge (2) of the sheet (S) with respect to the cutter traveling direction α
And the relationship between the seat speed V _S and the cutter speed V _C Then, the adhesive injection command is issued at the position X ₁ where the cutting blade (1) has traveled L from the origin X _0, and then travels only A and reaches the edge of the sheet (S), Start cutting S).

On the other hand, the adhesive injection nozzle (3) receives the above-mentioned adhesive injection command, and the point (P) upstream of the distance (B) from the cutting travel line (XX).
Spray the adhesive toward. The adhesive force imparting point (P) sprayed on the sheet (S) is carried to a position just before the cutting traveling line (XX) as the sheet (S) travels.

At this time, if the position of X ₁ is determined so that the cutting blade (1) travels slightly downstream of the adhesive force imparting (P), the proper adhesive injection timing can be obtained. Therefore, as a feature of the present invention, a control device is provided for making the above timing appropriate.

That is, the following equation is derived from the above relationship.

Here, T is the delay time from when the adhesive injection command is transmitted until the adhesive is actually sprayed on the sheet (S) surface, and γ is the adhesive application point (P) from the edge of the sheet (S). Cutting depth up to, β is the adhesive application point (P) is the cutting line (XX)
It is a small distance between the two when it comes just before.

In the above formula (II), D, B, α, β and γ are values determined as design conditions, and T is a unique response time of the adhesive injection device, which is also a constant value. To take.

W and V _S are variables depending on operating conditions.

Therefore, the position X ₁ of the cutting blade (1) that should send the adhesive injection command
Is the traveling distance L of the cutting blade (1) from the origin X ₀ to X ₁ (I
It can be obtained by calculation based on equation (I).

(5) is an arithmetic unit for obtaining L as one of the constituents of the control unit, which calculates and outputs the value of L based on the input (II) of the sheet width W and the sheet traveling speed V _{S according} to the operating conditions.

On the other hand, (6) is a comparison device, which is one of the control devices, and (I) is generated by the disconnection signal during the automatic rewinding cycle in the winder.
Of expression The position from the origin X ₀ of the cutting blade (1) traveling laterally at the speed of is detected by the position detecting device described later, and this is detected by the arithmetic device (5).
When it coincides with the output value of, the adhesive injection signal is transmitted from the comparison device (6) through the transmission device (7) to the adhesive injection device.

Hereinafter, further explaining the cutting blade position detecting device from the origin X ₀ of the cutting blade (1), this position detecting device also constitutes one of the control device, (8) and (8) 'is a ratio controller, 1 / tan α of the sheet cutting edge inclination angle α determined in advance as a design condition with respect to the sheet traveling speed V _S not shown, that is, V
_C = V _S / tan α is used as a speed signal of the lateral traveling drive motor (M) of the cutting blade (1), and the cutting blade (1) is traversed at the speed V _C.

And the position from the origin X ₀ of the cutting blade (1) during traveling is provided with a pulse generator PG in the transverse traveling drive system of the cutting blade (1), and one pulse is generated every time the cutting blade (1) moves a predetermined distance. Send it out (eg 1 pulse / 1mm etc.), and add this pulse to the integrator (9)
Cutting blade at the time (1)
It is detected by expressing the position from the origin (X ₀ ).

Then, as described above, when the integrated value coincides with the value set by the arithmetic unit (5), the adhesive jet number is transmitted.

Thus, when the adhesive is sprayed, the adhesive is applied on the surface of the sheet (S) at a slight distance (γ) from the edge of the sheet, and at the front (distance (P)) of the adhesion point (P). The cutting blade (1) traverses at a position separated by β) and passes by to cut the sheet (S).

As a result, the sheet (S) is obliquely cut as shown in FIG. 3, and the adhesive force imparting point (P) is formed at the oblique end of the cut.

Although the present invention has been described above in the case where the adhesion applying device is the injection device, it goes without saying that the adhesive application is not limited to the injection and can be performed by other means.

(Effects of the Invention) As described above, the cutting and winding control device of the present invention associates the adhesive injection timing with the position of the cutting blade that runs in the lateral direction, and uses the position in the sheet width and the running speed of the sheet as a calculation device. In addition to calculating by presetting, the running position of the cutting blade is detected momentarily, and when the calculated value by the previous computing device and the detected value of the cutting blade position by this integrator match, an adhesive application command is issued. Even if the operating conditions are changed, it is only necessary to change the preset values for the arithmetic unit, that is, the sheet width and sheet traveling speed values, so that an extremely accurate adhesive for cutting tip winding can be applied. Get the timing.

Therefore, for example, every time when the operating conditions are changed,
No complicated and inaccurate setting work such as changing the setting position of the sensor is required, and workability in cutting and winding work is improved.

[Brief description of drawings]

FIG. 1 is an explanatory view of a cutting and winding control device according to the present invention, and FIG.
FIG. 3 is a schematic view of a winding machine to which the control device of the present invention can be applied.
The figure is an explanatory view of the sheet cutting end in the winding machine shown in FIG. (1) …… Cutting blade, (3) …… Adhesive applying device, (5) …… Computing device, (6) …… Comparison device, (9) …… Integrator, (S) …… Sheet.

Claims (1)

[Claims] 1. A cutting blade that runs transversely to the sheet traveling direction in front of a sheet winding position of a winder, and a portion that is located upstream of the cutting blade in the sheet traveling direction and that is a beveled tip when cutting the sheet. In a winding machine provided with an adhesive applying device for applying adhesive, the traveling distance from the origin of the cutting blade to an appropriate position where an adhesive applying command should be transmitted is calculated using the sheet width and the sheet traveling speed as parameters. Computation device, cutting blade position detection device that detects the distance from the origin of the cutting blade that is running, input comparison of the output values of both devices, and when both match, apply adhesive to the adhesive applying device A cutting and winding control device for a winder, comprising a control device including a comparison device that emits a signal.