JP2500235Y2 - Timing belt conveyor - Google Patents

Description

[Detailed Description of the Invention] <Industrial field of application> The present invention relates to a timing belt conveyor, and more particularly to a timing belt conveyor with suction holes used for manufacturing coated sheets such as coated paper and coated paper. It is about.

<Prior Art> Coated paper used in the manufacture of laminated boards for printed circuit boards, coated sheets such as coated paper, are dent defects on the surface of the laminated resin due to resin powder and substrate powder generated from the cut surface. Therefore, the cut surface is heat-treated at a temperature not lower than the softening point of the thermosetting resin and not higher than the curing temperature.

From the viewpoint of productivity, this heat treatment is generally performed while the coated sheet is being conveyed by a belt conveyor.The belt conveyor used for this conveyance conveys the coated sheet that is the object to be conveyed. A conveyor belt with suction holes is used to convey it in a state where it is sufficiently fixed to the belt, and this is slidably contacted with the opening surface of the suction slit of the suction duct to run, and the coating placed on the conveyor belt. It is general that the sheet is vacuum-sucked through the suction slit of the suction duct and conveyed through the suction hole. Furthermore, the processing speed is more than 20 m / min, and the coating sheet traveling direction and coating The conveyor belt is generally a timing belt with teeth so that the parallelism of the sheet cut surface is about 1 mm per 700 mm.

Conventional examples of belt conveyors used for this type of conveyance are shown in FIGS. 3 and 4. In this belt conveyor, the timing belt 1 having the suction holes 4 sucks the suction duct 5 on the tooth portion 3 side with the coating sheet S, which is an object to be conveyed, placed on the back plate portion 2. The side surfaces of the suction slit opening face 7 are formed on both sides of the suction slit opening face 7 in order to prevent the vacuum leak from the troughs of the tooth portions 3 of the timing belt 1 in order to run while sliding against the opening face 7 of the slit 6.
Is provided so as to project.

<Problems to be Solved by the Invention> In the conventional belt conveyor as shown in FIGS. 3 and 4, the side surface of the timing belt 1 and the side seal plate 8 come into contact with each other due to the meandering of the timing belt 1. When this contact occurs, the timing belt 1
Causes wear particles of about 0.2 mm due to the wear of the belt material such as chloroprene and polyurethane. Most of the wear particles are sucked into the suction duct 5 through the valleys of the tooth portions 3 of the timing belt 1, but some of the wear particles may be scattered and adhere to the coating sheet due to static electricity. . In such a conventional belt conveyor, about 0.5 to 1.5% of the wear particles of the belt material adhere to the coating sheet, which is a foreign matter for the coated paper sheet and cannot be left. .

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is that even if abrasion particles of a belt material are generated, this is caused by the conveyance of a coated sheet such as a coating sheet being conveyed. An object of the present invention is to provide an improved timing belt conveyor that makes it difficult for the object to be conveyed and does not easily adhere to the object to be conveyed.

<Means for Solving the Problems> In order to achieve the above object, in the timing belt conveyor according to the present invention, the object to be conveyed is placed on the back plate, and the timing belt with the suction holes has the suction duct on the tooth side. In a timing belt conveyor that runs in sliding contact with the suction slit opening surface of the suction belt and is provided with side seal plates for preventing vacuum leakage protruding on both sides of the suction slit opening surface, The plate portion is wider than the tooth portion and protrudes outward from the suction slit opening surface, and the side seal plate has a thickness smaller than the protrusion width of the back plate portion and is within the protrusion range of the back plate portion. And is located laterally of the tooth portion.

<Operation> With the above-described configuration, the protruding portion of the back plate portion of the timing belt with suction holes is located at the tooth side surface of the timing belt or the wear particle generation area due to contact between the protruding portion of the back plate portion and the side seal plate. It acts as an isolation wall that separates the position of the transported object such as a coated sheet on the plate portion, making it difficult for the wear particles to move to the position of the transported object on the back plate portion.

<Embodiment> An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an embodiment of the heat exchanger according to the present invention. Incidentally, in FIG. 1, the same parts as those of the above-mentioned conventional example are
The same reference numerals as those of the conventional example are given and described.

As shown in the figure, in the timing belt conveyor according to the present invention, the back plate portion 2 of the timing belt 1 has the tooth portion 3
The suction slit opening surface 7 of the suction duct 5 is made wider
As shown in the figure, it protrudes to the outside on both the left and right sides, and has flange-shaped protrusions 9 on both sides. The plate thickness of the protruding portion 9 is equal to or smaller than the tooth height of the tooth portion 3 of the timing belt 1, and this timing belt 1 is manufactured by removing the tooth portion of a ready-made timing belt by machining. May be

The side seal plate 8 has a thickness smaller than the protruding width of the protruding portion 9 of the back plate portion 2, and is located on the side of the tooth portion 3 within the protruding range of the back plate portion 2. The distance C between the tip surface of the protruding portion 9 and the outer surface of the side seal plate 8 is preferably about 0.5 to 1 mm.

The side seal plate 8 is configured as a top seal plate as shown in the figure. Specifically, the portion 8a near the lower surface of the protruding portion 9 of the timing belt 1 is a curved surface with a radius of 0.5 mm or more, and The distance B from the protruding portion 9 of the timing belt 1 is set as close as possible to the tooth portion 3 of the timing belt 1 with a gap A of about 0.1 mm, and from the curved surface portion 8a to the tip side of the protruding portion 9 of the timing belt 1. Try to grow gradually.

When the load acting on the protruding portion 9 of the timing belt 1 is light and the amount of downward bending of the protruding portion 9 of the timing belt 1 is small, as shown in FIG. It may be composed of a thin top seal plate. Even in this case, it is preferable that the upper end portion of the side seal plate 8 has a curved surface with a radius of 0.5 mm or more and that the dimension A shown in FIG. 1 has a gap of about 0.1 mm.

With the above-described configuration, the protruding portion 9 of the back plate portion 2 of the timing belt 1 is located on the side surface of the tooth portion 3 of the timing belt 1, or the protruding portion 9 of the back plate portion 2 and the side seal plate 8 are provided.
The abrasion particles generated by the contact with the abrasion particles act as an isolation wall for isolating the abrasion sheet generation area on the back plate portion 2 from the existing position of the coating sheet S, and the abrasion particles generated in the abrasion grain generation area below the protruding portion 9 in the figure. In the figure of the protruding portion 9, it becomes difficult to move to the position where the coating sheet S is present on the upper back plate portion 2 in the figure. This makes it difficult for the wear particles to adhere to the coating sheet S being conveyed due to static electricity.

In the figure of the protruding portion 9 of the timing belt 1, a gap A is provided between the lower surface and the upper end surface of the side seal plate 8 to the extent that it does not prevent adsorption, so that constant friction between them is avoided. This suppresses the generation of belt material particles as much as possible. Further, the upper end surface of the side seal plate 8 is formed in a curved shape, and it is taken into consideration so that even if the side seal plate 8 comes into contact with the protruding portion 9 of the timing belt 1, the belt material surface is not cracked. When a large load acts on the protruding portion 9 of the timing belt 1, the protruding portion 9 comes into contact with the upper end surface of the side seal plate 8. Even in this state, the protruding portion 9 is located outside the side seal plate 8. There is an isolation effect because it appears in.

<Effect of Device> As understood from the above description, in the timing belt conveyor according to the present invention, the protruding portion of the back plate portion of the timing belt is the tooth side surface of the timing belt or the protruding portion of the back plate portion. The wear particles act as an isolation wall that separates the wear particle generation area due to contact with the side seal plate from the position of the transported object such as a coating sheet on the back plate, and the wear particles are present on the back plate. Since it is difficult to move to the position, abrasion particles are prevented from adhering to the coating sheet or the like being conveyed, and deterioration of quality due to adhesion of foreign matter on the conveyed material such as the coating sheet can be avoided.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a timing belt conveyor according to the present invention, FIG. 2 is a sectional view showing another embodiment of a timing belt conveyor according to the present invention, and FIG. 3 is an example of a conventional timing belt conveyor. Sectional view showing the fourth
FIG. 1 is a side view and a broken sectional view showing an example of a conventional timing belt conveyor. 1 ... Timing belt 2 ... Back plate part 3 ... Tooth part 4 ... Suction hole 5 ... Suction duct 6 ... Suction slit 7 ... Suction slit opening surface 8 ... Side seal plate 9 ... Projection part

Claims (1)

(57) [Scope of utility model registration request] 1. A transported object is placed on a back plate, and a timing belt with suction holes runs on the tooth side in sliding contact with the suction slit opening surface of a suction duct, and on both sides of the suction slit opening surface. In a timing belt conveyor in which a side seal plate for preventing vacuum leakage is provided in a protruding manner, the back plate portion of the timing belt with the suction hole is wider than the tooth portion and outward from the suction slit opening surface. Timing belt conveyor characterized in that the side seal plate has a thickness smaller than the protruding width of the back plate portion and is located laterally of the tooth portion within the protruding range of the back plate portion. .