JPH0242682Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an automatic gluing device in a winder device that applies adhesive to the core at the start of winding and to the winding roll when winding is completed. The present invention relates to an automatic gluing device for a winder device that prevents strings and the like from adhering and accumulating on a nozzle gun and reducing the amount of adhesive used.

In an automatic winder, as shown in FIG. 1 A to E, when the winding roll 1 reaches the required diameter and the winding is completed, the rotation of the rear drum 2 and front drum 3 is stopped, and then the rider roll is moved as shown in FIG. 4 is raised, and adhesive is jetted upward from the nozzle gun 5 to glue the wound roll 1. Next, after slightly rotating the drum 2 to adhere the paper 7 to the glued surface 6 of the winding roll 1, the winding roll 1 is displaced as shown in C, and the suction of the rear drum 2 is activated, and the cutter 8 cuts the paper. Cut across the entire width. The cut roll 1 is moved to another place, and the rear drum 2 and front drum 3 are moved as shown in D.
A new core 9 is set between the two, and then the rear drum 2 is slightly reversed from the position D to set the end of the paper to a position where it can be wound around the core 9, and the length at the beginning of winding is adjusted. Next, while the rider roll 4 is being lowered, adhesive is jetted upward from the nozzle gun 5 as shown in E to apply glue along the longitudinal direction of the core 9, and the rear drum 2 and front drum 3 are rotated in the winding direction ( (forward rotation) to wind around the core 9. When winding is completed (state A),
It is arranged to repeat in the order of B and C.

The details of the nozzle gun 5 in the automatic winder are currently employed as shown in FIG. 2. That is, in order to be able to continuously apply glue to the core 9 set in the upper part between the rear drum 2 and the front drum 3, a plurality of nozzle guns 5 (four in the example) are used.
are placed on the sliding plate 10 at predetermined intervals, and the sliding plate 10 is placed on the fixed frame 11 so as to be able to slide in the axial direction of the core 9.
An endless chain 14 is applied to the chain sprockets 12 and 13 attached in the longitudinal direction (sliding direction side of the sliding plate 10), and a chain sprocket 15 and a reduction gear 16 are attached coaxially with one chain sprocket 13. A chain 18 is hung between the chain sprocket 17 attached to the output shaft of the sliding plate 10, and a protrusion 30 protruding from an appropriate location on the lower surface of the sliding plate 10 is connected to one location of the chain 14. The chain 14 is rotated by decelerating the chain 18 and the chain sprockets 15 and 13.
When the nozzle guns 5 move slowly, each nozzle gun 5 can move together with the sliding plate 10 at the same time, and when the striker 19 attached to the sliding plate 10 hits the limit switches 20 and 21, the motor automatically reverses forward and reverse, and the nozzle guns 5 can move back and forth through the required stroke. On the other hand, the glue tank 22 is attached to the support frame 2 on the fixed frame 11.
3 and connect the hot melt applicator 24 and each nozzle gun 5 with a hose 25, and by applying the required pressure in the tank 22, the adhesive passes through each hose 25 and is continuously released from the nozzle gun 5. It is designed to be squirted and applied. 26 is a stopper.

In the conventional system with the above configuration, each nozzle gun 5
Since the supplied adhesive is ejected from each nozzle gun 5 when the adhesive is moved by the chain 14, the adhesive can be uniformly applied to the winding roll 1 and the core 9.

However, in the above-mentioned conventional method, each nozzle gun 5 is oriented vertically upward and continuously sprays adhesive directly above, which causes the following problems.

Since the nozzle gun 5 is placed in an atmosphere of paper powder, if the nozzle gun is opened directly above,
Paper dust tends to adhere to and accumulate at the opening of the nozzle gun, and when the ejected adhesive drips down, the adhesive adheres to and accumulates at the opening of the nozzle gun 5.

Furthermore, since the adhesive has a high viscosity, even if the spouting of the adhesive is stopped, the spouted adhesive will draw a thread, and if it does not break immediately, this thread will rest on the opening of the nozzle gun and adhere.

If paper powder, adhesive, or adhesive threads adhere to and accumulate at the opening of the nozzle gun as shown above,
This will cause the nozzle gun to become clogged, and the spray angle at the initial stage of spraying will not be constant. Therefore, the accumulated paper powder and the like are removed, but this process takes a lot of time.

Since the adhesive is continuously ejected from the nozzle gun, the amount of adhesive used is large, increasing the running cost of the adhesive.

The present invention was made in an attempt to eliminate the problems of the conventional method described above and to enable stable injection of adhesive.

Embodiments of the present invention will be described below based on the drawings.

The automatic gluing device in the winder device of the present invention is configured so that a plurality of nozzle guns 5 can be reciprocated as a unit, similar to the conventional method shown in FIG.
In a configuration in which adhesive can be injected from each nozzle gun 5, each nozzle gun 5 is moved at a required angle θ (θ
= 1 to 10 degrees), and the adhesive is sprayed obliquely upward, and each of the nozzle guns 5 is
The adhesive supply system is equipped with a solenoid valve 27 for switching between supplying and cutting off the adhesive, and the excitation (ON) and demagnetization (OFF) of the solenoid valve 27 can be controlled by timer control. so that the adhesive is sprayed intermittently.

By setting the time required for turning the solenoid valve 27 ON and OFF in advance, the surface to which adhesive is applied and the surface not to be applied will appear for each required dimension in relation to the moving speed of the nozzle gun 5. Become.

Now, for example, if the solenoid valve 27 is turned on and the time to spray adhesive from the nozzle gun 5 is 0.1 seconds, adhesive can be applied over a length of 50 mm, and if the solenoid valve 27 is turned off for 0.05 seconds, the adhesive can be applied over a length of 25 mm. If the timer control is performed and the moving speed of the nozzle gun 5 is set so that the adhesive is not sprayed from the nozzle gun 5 over the length,
When applying adhesive to the core 9, as shown in Fig. 4A and B, a coating surface 28 of 50 mm is created on the core 9 when the adhesive spray is turned on for 0.1 seconds, and then a coating surface 28 of 50 mm is formed on the core 9, as shown in Fig. 4A and B.
When the adhesive injection is turned off for a second, an uncoated surface 29 of 25 mm is created on the core 9. By sequentially repeating this operation, the glue-applied surface 28 and the non-applied surface 29 occur alternately, making it possible to reduce the amount of glue consumed compared to the conventional continuous injection method.

In injecting the adhesive onto the core 9 and the like, the present invention is characterized by a configuration in which each nozzle gun 5 is attached at an angle with respect to the vertical, so that it is less likely that paper dust or the like will accumulate. In other words, since the opening of the nozzle gun 5 is oriented diagonally upward, not only is it difficult for paper dust to accumulate, but even if the sprayed adhesive drips, it will not fall onto the nozzle gun opening, and the sprayed adhesive will not fall onto the nozzle gun opening. Strings of the agent are also difficult to adhere to the nozzle gun opening. As a result, in this invention,
Paper dust and adhesive can be prevented from accumulating at the opening of each nozzle gun 5, and adhesive can be stably sprayed without fear of nozzle clogging.

It goes without saying that a locking device for the electromagnetic valve is provided to prevent erroneous injection during winding.

As described above, according to the automatic gluing device in a winder device of the present invention, a plurality of nozzle guns for gluing cores and winding rolls are tilted in the moving direction with respect to the vertical, and the nozzle guns are Since the adhesive is controlled to be sprayed intermittently and the glue is applied intermittently,
It is possible to prevent the accumulation of paper dust and the like on the nozzle gun, making the jetting from the nozzle more stable, and also to reduce the consumption of glue and reduce costs.

[Brief explanation of the drawing]

Figures 1A to 1E are explanatory diagrams showing the operating sequence of the automatic winder, Figure 2 is an overall view of the conventional gluing mechanism, and Figure 3
4A is a schematic diagram of the apparatus of the present invention, FIG. 4A is a state diagram of the glue bead according to the present invention, and FIG. 4B is a diagram showing the control of the timer corresponding to the glue bead of FIG. 4A. 5... Nozzle gun, 9... Core, 10... Sliding plate, 11... Fixed frame, 14... Chain, 2
2... Glue tank, 27... Solenoid valve.

Claims (1)

[Scope of utility model registration request] A plurality of nozzle guns are installed on a sliding plate that is slidably placed on a fixed frame in the axial direction of the core so that adhesive can be sprayed upward, and the sliding plate is placed in the axial direction of the core. In an automatic gluing device, the plurality of nozzle guns are tilted in a moving direction with respect to the vertical, in an automatic gluing device equipped with a drive mechanism that reciprocates the nozzle guns, and a supply mechanism that supplies adhesive to the nozzle guns.
In addition, the above adhesive supply mechanism is equipped with a timer.
An automatic gluing device for a winder device, characterized in that it incorporates a solenoid valve capable of ON-OFF control, and is capable of intermittently spraying adhesive diagonally upward.