JPH03383Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a gluing device.

Conventionally, a gluing device used in a bookbinding process has a glue tank and a glue disc that is partially immersed in the glue tank, and when the glue disc rotates, it uses its outer circumferential surface to extract glue from the glue tank and apply glue. A type that is attached to and attached to an object is generally widely known. This type of product has drawbacks such as an excessive amount of glue being applied to the bonded area and difficulty in adjusting the amount of glue. Some of them are configured as a flow-through tank, and the glue-applied disk enters the flow-through tank from the outside at its outer circumferential area and comes into contact with the glue flowing inside the flow-through tank. Are known. However, in the above system, the pump takes up a corresponding amount of glue from the tank and transports it into the pipe via the connecting hose and the connecting sleeve, in which case the glue flows downwards in the inclined pipe. The structure is such that the flow returns to the tank, and the glue does not always flow through the determined appropriate areas in the flow tube as a continuous flow at a constant rate, and sometimes an intermittent or pulsating flow may occur. Therefore, it is impossible to apply an appropriate amount of glue without interruption to the glue-applied disk protruding into the flow tube, and it is inevitable that the amount of glue deposited will be uneven and unstable. Ta. Furthermore, the pipe serving as the flow tank had to have a downwardly sloping or vertical shape in order for the glue to flow through the inside, which placed restrictions on the position and direction of the glue disc and the objects to be glued. .

In view of the above, this invention provides a gluing device as described below to eliminate the various drawbacks of the prior art.

To explain the gluing device of this invention in detail with reference to the drawings, numeral 1 is a gluing tank provided on a frame 2, and an outflow pipe 3 is horizontally protruded from the lower part of the gluing tank 1. It serves as a nozzle opening 3a. Reference numeral 5 denotes a vertical rotating shaft which is rotatably supported on the frame 2 by a shaft bearing 6, and a glued disc 4 is fixed to the upper end thereof. Note that 4a is the outer periphery of the glued disc 4. In this invention, a gap S is provided between the outer peripheral end surface of the glued disc 4 and the tip of the outflow pipe 3 to form a glued portion.

Further, on both sides of the glued area, control cylinders 7 and 8 are provided to control the amount of glue adhered to the outer peripheral end surface of the glued disc 4 or to remove it. The discs 4 are rotatably fitted into the frame 1 in a state where they are respectively engaged with a part of the outer periphery. Note that the rotating shaft 5 is configured to be able to rotate at an appropriate rotational speed via a transmission mechanism.

Next, to explain the operating state with reference to the drawings, the glue 12 is now stored in the glue tank 1 and the glue disc 4 is placed in the first
When rotated in the direction of the arrow in the figure, the glue automatically and continuously flows out from the tip of the outflow pipe 3 due to the weight pressure of the glue in the tank, and the glue is rotated in the direction of the arrow at the glued part of the space S section. Glue having a thickness t ₁ approximately equal to the above-mentioned interval S is adhered to the outer peripheral end surface of the disk 4, and the glue layer having a thickness t ₁ passes through the slit hole a of the control tube 7 and is passed through the next slit hole. When passing through the hole a', a part of the material is scraped off to a desired thickness _t2 , _which is appropriately thinner than the thickness t1, and the material rotates sequentially.
An appropriate amount of gluing is automatically applied to the gluing surface of the gluing object 11. Note that the slit hole in the control tube 7
Excess glue scraped off when passing a' is discharged downward within the control tube 7. Next, the glue with a thickness of t ₂ is applied to the glued surface of the glued object 11, and the glued disk 4, which has no glue on the outer peripheral end face, is further rotated one after another, but in this case, the glue with a thickness of t ₂ The glue does not necessarily adhere completely to the glued surface of the object to be glued 11, and in many cases, a small portion of the glue remains attached continuously or dottedly as it rotates and transfers. It is. Therefore, as the glue disc 4 rotates, the partially adhered glue is completely scraped off and removed when it passes through the slit hole b of the next control tube 8 and then the next slit hole b'. The above action is repeated such that no glue is attached to the outer peripheral end face, and then new glue fed out from the outflow pipe 3 is attached to a layer of thickness t ₁ at the glued area again. . Incidentally, the excess glue scraped off when passing through the slit hole b' of the control tube 8 is also discharged downward within the control tube 8. It goes without saying that by rotating the control tube 7 right and left as appropriate, the slit holes a and a' can be adjusted, and the thicknesses t ₁ and t ₂ of the adhesive layer on the outer peripheral end surface of the adhesive disk 4 can be adjusted.

As mentioned above, this idea is based on the idea that a gap S is provided between the outer peripheral end surface of the glue-applying disk 4 fixed to the rotary shaft 5 of the support on the frame 2 and the tip of the outflow pipe 3 at the bottom of the glue tank 1, thereby forming a glue-applying area. Since it is a glued disk 4
A constant flow of glue flowing out from the outflow pipe 3 is supplied sequentially as the outflow pipe 3 rotates, and since the glue flowing out from the outflow pipe 3 is a constant flow and does not cause any intermittent flow or turbulent flow, the glue is applied to the glued area. Disc with glue 4
It has an outstanding effect of being able to consistently apply a uniform and appropriate amount of glue as a continuous layer to the outer peripheral end surface of the . In addition, the outer circumference 4a of the glue disk 4 does not protrude into the glue tank 1 or the outflow pipe 3, and there is always a gap S between them.
Since the adhesive is maintained, the adhesive disc 4 does not disturb or otherwise affect the adhesive in the adhesive tank 1 or the outflow pipe 3, and the stable supply of adhesive is not disturbed. effective. Furthermore, with this invention, the outflow pipe 3 can be provided anywhere in the lower part of the glue tank 1, such as the side wall or the bottom, and the position and direction of the glue disc 4 can be arbitrarily set to achieve the same effect as described above. It has the advantage of being able to perform

Furthermore, after the amount of glue adhered to the outer peripheral end face of the glue-applying disk 4 is measured by the control tube 7, the measured amount of adhering glue is not necessarily applied to the gluing surface of the object to be glued 11 in front of the tube. First, some glue remains attached, but this remaining glue can be completely scraped off with the next control tube 8, and the glue remains stable without deterioration or coagulation during repeated glue application operations. This has the effect of allowing proper gluing.

[Brief explanation of the drawing]

The drawings show an embodiment of this invented device, and FIG. 1 is a partially longitudinal plan view, and FIG. 2 is a front view of the same. 1... Glue tank, 2... Claim, 3... Outflow pipe, 3a... Tip nozzle port, 4... Disc with glue, 4
a... Outer circumferential part, 5... Rotating shaft, 6... Shaft bearing body,
7, 8...control tube, 9,10...slit, 11
...Glued object, 12...Glue, a, a', b, b'...
Slit hole, t ₁ , t ₂ ...thickness.

Claims (1)

[Scope of utility model registration request] A gap S is provided between the outer peripheral end surface of the glue disc 4 fixed to the rotating shaft 5 of the support on the frame 2 and the tip of the outflow pipe 3 at the bottom of the glue tank 1 to form a glue application area. Control tubes 7 and 8 for measuring or removing the amount of glue attached to the outer peripheral end surface of the glue-applied disk 4,
A gluing device in which each slit 9, 10 is rotatably fitted into a frame 1 with each slit 9, 10 being engaged with a part of the outer periphery of a gluing disk 4.