JPH0518828U - Glue machine for glue machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a gluing device that does not have a risk of causing crushing deformation of the step top portion like a pasting device using a rider roll. [Structure] 2 with a predetermined gap S to the sizing roll 1
The three rolls 8a and 8b are arranged side by side, and the same three rolls 1 and 8 are provided.
The single-faced corrugated cardboard sheet 5 running between a and 8b is wound around the same glued roll 1 at a predetermined angle. The inlet side roll 8a of the two rolls 8a and 8b can be arbitrarily rotated. Equipped with a brake that can be controlled.
In addition, the endless belt 10 is wound around the two rolls 8a and 8b and the traveling single-faced corrugated cardboard sheet 5 is pressed against the side peripheral surface of the glued roll 1. It comes into contact and eliminates crush deformation.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a glue machine gluing device for a corrugating machine.

[0002]

[Prior Art]

 FIG. 4 is a structural explanatory view of a pasting device for a conventional glue machine installed in a corrugating machine, and FIGS. 5 to 6 are explanatory views of a structural example of the pasting roll portion. As shown in FIG. 4, the gluing device of the glue machine G is composed of a gluing roll 1, a doctor roll 4, and a glue reservoir 2 located below the gluing roll 1 and the like. The glue 3 is transferred and supplied to the step top portion of the core paper 6 of the single-faced corrugated cardboard sheet 5 that travels between the rider roll 7 and the rider roll 7 that are placed opposite to each other. Further, in the figure, 13 is a pressing roll for the sheet introducing port, 14 is a tension roll, and both rolls 13 and 14 function to stabilize the traveling of the single-sided corrugated board sheet 5.

The single-faced corrugated board sheet 5 manufactured by the single facer in the previous step is heated appropriately by running the guide roll 15 and the preheat roll 16 and then fed to the glue machine G to be glued. While traveling in the middle between the roll 1 and the rider roll 7, it comes into contact with the glued roll 1 and the glue on the outer peripheral surface is transferred and supplied to the step top portion of the core paper 6. The amount of glue (paste thickness) on the outer circumference of the gluing roll 1 is controlled by a doctor roll 4 arranged side by side in the middle of the gluing roll 1 which is rotated in the direction of the arrow by immersing a part of the roll peripheral surface in the glue reservoir 2. The excess glue scraped off is again dropped into the glue reservoir 2 and collected. The single-sided corrugated board sheet 5 that has passed through the glue machine G is further introduced into the heating part 9 of the double facer W in the next step, merges with the liner 17 sent through another path, and is bonded to each other to form the double-faced corrugated board sheet 12. Formed in.

There are various kinds of double-sided corrugated board sheets 12 according to the purpose of use, but in FIG. 4, two single-sided corrugated board sheets 5a and 5b, that is, the glue 3 is applied by the gluing device Ra. The case where the double-sided corrugated board sheet 12 is formed by sticking the single-sided corrugated board sheet 5a, the single-sided corrugated board sheet 5b to which the glue 3 is applied by the gluing device Rb, and the liner 17 to each other is illustrated. The engagement state (gap, clamping pressure) of the gluing roll 1 and the rider roll 7 that are placed opposite to each other via the single-sided corrugated board sheet 5 in the gluing device is an important factor that affects the quality (strength) of the double-sided corrugated board sheet 12. It is known that the strength of the single-faced corrugated sheet is drastically reduced when the step top portion of the core paper 6 is crushed by 0.1 m / m or more as shown in FIG. Therefore, it is important to paste the top of the core paper without crushing it.

The structure of the conventionally used rider roll 7 will be described below with reference to FIGS. 5 to 6. First, in the example shown in FIG. 5, the shaft 1 on both sides of the rider roll 7 is rotatably supported by the heads 19a and 19b of the cylinders 18a and 18b to the glued roll 1 which is fixedly installed. A structure that adjusts the pressing force to the single-sided corrugated sheet 5 traveling in the middle by controlling the acting force (stretching force) of 18a and 18b through a regulator 21 provided in the middle of the compressor 20 and air balancing. It is what However, with this method, it is difficult to set the same pressure due to changes in the width and thickness of the base paper (liner, core paper) due to order changes, and the strength, and there was a risk that the sheet would be crushed by misadjustment. Next, the example of FIG. 6 is a system in which the gap between the rider roll 7 and the sizing roll 1 is finely adjusted, and the top portion of the core paper 6 is crushed by the thickness variation of the single-sided corrugated cardboard sheet 5 due to paper splicing or the like. Or, conversely, there was a problem that the gap was wide and the holding pressure (contact pressure of the sheet) was small, and sufficient adhesive transfer could not be achieved. In addition, as a matter common to both types of FIGS. 5 and 6, there was a problem that the structure became complicated and the manufacturing cost of the device increased.

[0006]

[Problems to be solved by the device]

 As described above, in the conventional gluing device installed in the glue machine, as a general means for adjusting the engagement state between the gluing roll and the rider roll oppositely placed via the single-sided ball sheet, the gap between the rolls is set. Methods such as fine adjustment of the distance or air balance of the pressing force of the rider roll via an air cylinder or the like have been adopted. However, the former had problems such as being crushed when the thickness of the single-faced corrugated cardboard sheet changed due to order changes, and the contact pressure of the sheet was insufficient, and the latter had difficulty in adjusting the air balance. Other common problems between the two were that the structure was complicated and the manufacturing cost of the equipment increased. The present invention has been proposed to address the above conventional problems.

[0007]

[Means for Solving the Problems]

 Therefore, in the present invention, two rolls are arranged side by side with a predetermined gap to the sizing roll, and a single-faced corrugated board sheet running between the three rolls is wound around the sizing roll at a predetermined angle. In addition to the above configuration, the inlet side roll of the two rolls is provided with a brake capable of arbitrarily controlling the rotation, and this is a means for solving the problem. Further, according to the present invention, an endless belt is wound around two rolls arranged side by side, and the running single-sided corrugated sheet is pressed against the peripheral surface of the sizing roll to solve this problem. It is the means of. Further, the present invention is provided with an elastic body configured so that the pressing force can be adjusted with respect to the sizing roll, and acts so as to press the traveling single-sided corrugated board sheet to the peripheral surface of the sizing roll. It is a means for solution.

[0008]

[Action]

 The present invention is configured so that a single-sided corrugated board sheet is wound around a roll with gluing to make contact with each other to reduce the pressing force against the top of the single core paper sheet. The function of adjusting the tension of the traveling single-sided corrugated cardboard sheet to change the contact pressure, and pressing the single-sided ball sheet toward the gluing roll side via the endless belt, the adhesive transfer from the gluing roll You can finely control the state. As described above, the present invention is configured such that the weight of the conventional roll is not applied to the sizing roll through the single-sided corrugated sheet directly and in line contact, and the single-sided corrugated sheet is wound onto the sizing roll. It is characterized by improving the transfer efficiency of the glue by rotating and running it.The crushing of the top of the core paper and the amount of transfer of the glue due to changes in the sheet condition, for example, the thickness of the single-sided corrugated board sheet, etc. Problems such as shortages can be greatly improved.

[0009]

【Example】

 1 to 3 show an embodiment of the present invention, FIG. 1 is an explanatory view of a basic structure of a gluing device for a glue machine, and FIG. 3 is a gluing device installed in the device. It is an explanatory view of a structure example of an attachment roll part. In FIG. 1, part of the sizing roll 1 is dipped in the sizing 3 in the sizing reservoir 2 to adhere the sizing 3 to the peripheral surface of the sizing roll, and surplus sizing is applied via the doctor roll 4 arranged side by side during the rotational transfer. The basic function as a gluing device for scraping off and adjusting to a predetermined glue thickness and then transferring and feeding it to the step top portion of the core paper 6 of the single-sided corrugated cardboard sheet 5 is the same as that described with reference to FIG.

The gluing device of the present invention is characterized in that the weight of the conventional rider roll is not applied directly to the gluing roll 1 through the single-faced corrugated cardboard sheet 5. , The function will be described. First, in the example of FIG. 3 (a), two rolls 8a and 8b are juxtaposed to the sizing roll 1 with a predetermined gap S, and the rotation of the rolls is appropriately braked on the inlet side roll 8a. It is equipped with a workable brake. Here, in FIG. 3 (a), the single-sided ball sheet 5 continuously fed from the previous step is wound under the inlet side roll 8 a and then is wound on the peripheral surface of the gluing roll 1 by θ in the figure. After being transferred with the glue 3 being transferred, it is fed to the heating part 9 of the downstream double facer W via the exit side roll 8b. Further, the brake provided on the inlet side roll 8a functions to apply back tension to the traveling single-sided corrugated cardboard sheet 5 and change the contact pressure at which the step top portion of the core paper 6 contacts the glued roll 1. ..

Next, in the example of FIG. 3 (b), the endless belt 10 is wound around the inlet side roll 8a and the outlet side roll 8b arranged as in the example of FIG. 3 (a). As the traveling system of the belt 10, the rolls 8a and 8b are rotatably supported so as to follow the traveling single-sided corrugated cardboard sheet 5 or the roll 8b side is rotationally driven to travel in conjunction with the single-sided corrugated cardboard sheet 5. Various types such as those for making them possible are conceivable.

Next, the example of FIG. 3C is provided with an elastic body (for example, a leaf spring) 11 configured to press the traveling single-sided corrugated board sheet 5 toward the gluing roll 1 side. 1 has a structure in which the single-faced corrugated board sheet 5 is contacted over a predetermined circumference and the pressing force (contact pressure) can be changed to some extent. The present invention is configured as described above, and does not bring the single-faced corrugated cardboard sheet 5 into line contact in the axial direction on the peripheral surface of the sizing roll 1 as in the conventional sizing device, but provides some elasticity. There is a feature that should be emphasized in that they are brought into surface contact. Therefore, the double-faced corrugated cardboard sheet 12 having high rigidity can be manufactured without deformation due to the above-mentioned constitution and function.

[0013]

[Effect of the device]

 As described in detail above, the present invention does not engage a single rider roll with a gluing roll through a single-sided corrugated sheet sheet as in the conventional gluing device, but instead of using two gluing rolls with a predetermined gap. Since the rolls are installed side by side, the contact state of the sheet changes from axial line contact to surface contact. Therefore, since the load (contact pressure) is dispersed, not only the problem of crushing the top of the core paper corrugated sheet of the single-sided corrugated sheet is solved, but also the thickness of the single-sided corrugated cardboard sheet manufactured due to order change (paper splicing), etc. Even if there is some variation in thickness, this variation in thickness can be absorbed, and variations in product quality can be reduced. Further, since the sheet is run while being wound around a part of the gluing roll, the glue transfer efficiency can be increased even with a smaller pressure. Therefore, a double-faced corrugated sheet having high rigidity can be manufactured without crushing deformation.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a basic structure of a glue machine gluing device according to an embodiment of the present invention.

FIG. 2 is a detailed view of a P portion of FIG.

FIG. 3 is a detailed side sectional view of each example of the gluing roll unit showing the embodiment of the present invention.

FIG. 4 is a side sectional view of a conventional gluing device for a glue machine.

5 is a side view showing a sandwiched state of the rider roll in FIG. 4. FIG.

FIG. 6 is a side view showing a state in which a conventional rider roll different from that shown in FIG. 5 is clamped.

FIG. 7 is a situation explanatory view of a step top portion of a single-sided corrugated board sheet.

FIG. 8 is an explanatory diagram showing the relationship between the strength of cardboard and the amount of collapse.

[Explanation of symbols]

 1 Adhesive roll 2 Adhesive reservoir 3 Adhesive 4 Doctor roll 5 Single-sided corrugated sheet 6 Core paper 7 Rider roll 8 Roll 9 Heating part 10 Endless belt 11 Elastic body (for example, leaf spring) 12 Double-sided corrugated sheet 13 Press roll 14 Tension roll 15 Guide roll 16 Pre-heat roll 17 Liner 18 Cylinder 19 Head 20 Compressor 21 Regulator W Double facer G Glue machine R Gluing device S Gap between glue roll peripheral surface and roll peripheral surface θ Sheet winding angle for glue roll

Claims (3)

[Scope of utility model registration request] 1. A sizing roll with a predetermined gap 2
The two rolls are arranged side by side, and the single-faced corrugated board sheet running between the three rolls is wound around the same glue roll at a predetermined angle, and the inlet roll of the two rolls is rotated. A glue machine gluing device characterized by comprising a brake that can be controlled arbitrarily. 2. The glue machine for glue machine according to claim 1, wherein the endless belt is wound around two rolls arranged side by side, and the running single-sided corrugated board sheet is pressed against the peripheral surface of the glue roll. Gluing machine gluing device characterized by 3. A glue machine comprising an elastic body configured to adjust a pressing force with respect to a sizing roll, and acting to press a traveling single-sided corrugated cardboard sheet to a peripheral surface of the sizing roll. Gluing device