JPH0230434B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a roller-type furnace conveyor with a large number of rollers arranged in parallel is installed inside a tunnel-shaped furnace body, and the materials to be fired mounted on the furnace conveyor are conveyed in one direction. The present invention relates to a device for arranging fired products in a fixed array in a roller tunnel furnace for continuous firing.

When firing flat objects such as tiles in a roller tunnel furnace, they are transported directly onto a roller conveyor installed in the furnace and fired continuously without using saggers or floor plates. However, since each roller that makes up the roller conveyor installed in the furnace is bent due to thermal deformation, it is necessary to avoid changes in the posture and mutual positional relationship of the objects to be fired during conveyance. Therefore, in order to transfer the baked products onto a narrow belt conveyor and transport them to a boxing position, it is necessary to line up the products at the exit side of the roller conveyor.

For this reason, even in conventional roller tunnel furnaces, a roller conveyor with a high conveyance speed is connected to the exit side of the roller conveyor installed inside the furnace.
When transferring to this carry-out conveyor, the distance between the products in the conveyance direction is widened, and an alignment plate is provided on the downstream side of the carry-out conveyor that protrudes from below the conveyance surface at regular intervals, and the top of the conveyor is Aligning devices are used that align moving products by hitting them against the alignment plate and eject them intermittently, but with such an alignment plate alone, there is a risk that a following product will collide with the product during alignment. There were cases where the products were stacked on top of each other, or the moving products were pushed up by the alignment plate and blocked in an inclined position, resulting in the products being discharged in an uneven state.

The object of the present invention is to eliminate such drawbacks and provide an apparatus that can reliably align fired products.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

An embodiment of the present invention is shown in FIGS. 1 to 4.

An in-furnace conveyor 4 is constituted by a large number of rollers 3 arranged at equal intervals through the corresponding furnace walls 2, 2 of the tunnel-shaped furnace body 1, and both ends of each roller 3 are connected to the outside of the furnace wall 2. At the same time, each roller 6 is rotatably supported by a bearing 5, and a sprocket 6 is fixed to one end of the roller.An endless chain 7 running around each sprocket 6 circulates in one direction, so that each roller 6 is rotated as shown in FIG. is rotated counterclockwise to convey the baked product a in the direction of the arrow, and a roller-type discharge conveyor 8 is also connected to the outlet end of the in-furnace conveyor 4. ing. This unloading conveyor 8 consists of a first conveyor 9 that is continuous with the in-furnace conveyor 4 and a second conveyor 10 that is continuous in the forward direction in the conveyance direction. , 13 at equal intervals and rotatably supported at both ends by bearings 14, 14, each roller 11 constituting the first conveyor 9 is fixed to one end. An endless chain 17 is stretched around the sprocket 15 and is driven by a motor 19 to rotate in the counterclockwise direction in FIG. Endless chain 18 is spanned,
Although they are driven by a motor 20 and rotate in the same direction, the first conveyor 9 has a higher conveyance speed than the in-furnace conveyor 4, and the second conveyor 10 is set to have a higher speed than the first conveyor 9.

Bases 21, 21 are fixed on legs 22 below the outer sides of the horizontal frames 13, 13 on both sides at the connection point between the first conveyor 9 and the second conveyor 10, and are arranged to cross the bottom of the carry-out conveyor 8 at right angles. The shaft 24 is rotatably supported by bearings 23, 23 installed on the bases 21, 21 on both sides,
A chain 28 is stretched between a sprocket 25 fixed at one end and a sprocket 26 fixed to the output shaft of a motor 27 installed on the floor, and a first cam 29 is mounted at the center of the shaft 24.
A pair of second cams 30, 30 are fixed to both ends, and a pair of third cams 31, 31 are fixed to the outside thereof, respectively. The bases 21 on both sides so as to straddle the shaft 24,
A pair of elevating guides 33, 34 are fixed to the inside and outside of the legs 32, 32 erected on 21, respectively, and an elevating rod 35 is slidably inserted into the pair of inner elevating guides 33, 33. , 35 are connected to the second cam 3, respectively.
0 and 30, and a horizontal rod 37 that crosses the lower surface of the unloading conveyor 8 at right angles is fixed to the upper ends of the lifting rods 35 and 35, and on the upper surface thereof,
Rollers 1 of the first conveyor 9 and second conveyor 10
Several lower blocking plates 39 facing between 1 and 12 from below
are fixed at a small interval, and the lower ends of the elevating rods 36, 36, which are slidably inserted into the pair of outer elevating guides 34, 34, touch the upper surfaces of the outer peripheries of the third cams 31, 31, respectively. A horizontal rod 38, which crosses the upper surface of the carry-out conveyor 8 at right angles, is fixed across the upper ends of the lifting rods 36, 36, and on the lower surface thereof,
Several reactive upper blocking plates 40 are fixed directly above the lower blocking plate 39.

In addition, a sleeve 43 is rotatably fitted in the center of a shaft 42 which is fixed across between brackets 41, 41 which are erected on the second conveyor 10 side of the base 21 on both sides, and has both ends thereof The arm 4 protrudes forward in the conveyance direction of the second conveyor 10 from
An alignment plate 45 is fixed across the ends of the sleeves 4 and 44, and a lever 46 that hangs downward and bends backward is fixed to the center of the sleeve 43, and the end of the lever 46 touches the first cam 29. are in contact with each other.

Next, to explain the operation of this embodiment, the motor 2
7, the shaft 24 continuously rotates in one direction at a slow speed, and the inner lifting rod 35 and the second cam 30 engage with each other, and the outer lifting rod 36 and the third cam 31 engage with each other. As a result, the upper and lower horizontal rods 37 and 38 are raised and lowered in opposite directions, and the corresponding lower blocking plate 39 and upper blocking plate 40 are moved at regular intervals, as shown in FIG. As shown in FIG. 3, the retraction of the conveyance surface vertically and the forward movement of the conveyance surface so that they come into contact with each other at a height slightly above the conveyance surface are alternately repeated, and the lever 46 engages with the first cam 29. As a result, the arm 44 swings around the shaft 42, and the alignment plate 45 fixed to its tip aligns with the rollers 12, 12.
After the upper and lower blocking plates 39, 40 are expanded, the grooves pass through the gap and project onto the conveying surface of the carry-out conveyor 10, and retreat below the conveying surface before the upper and lower blocking plates 39, 40 come into contact with each other. It's getting old.

When the baked product a is transferred from the in-furnace conveyor 4 to the first conveyor 9 of the discharge conveyor 8, the conveyance speed increases and the distance between the product a and the subsequent product a increases as shown in FIG. When the upper and lower blocking plates 39 and 40 are spaced apart from each other, the object is transferred to the second conveyor 10 through them, and is conveyed at an increased speed until it hits the alignment plate 45 and is temporarily stopped. After the products a that have been stored and conveyed side by side are aligned in a horizontal line, the alignment plate 45 is retracted downward, and the aligned fine products a flow down on the second conveyor 10 and are carried out.

Next, as shown in FIG. 3, the upper and lower blocking plates 3
When the products 9 and 40 are in contact with each other, the product a carried by the first conveyor 9 hits these blocking plates 39 and 40 and is prevented from traveling, and the alignment plate 45 protrudes above the conveyance surface. The situation has become such that it accumulates until the end.

Here, while the product a is being transferred from the first conveyor 9 to the second conveyor 10, both the upper and lower blocking plates 39, 4
0 move toward each other, the product a is pushed up from below by the lower blocking plate 39 protruding above the conveyance surface, and the upper end surface of the lower blocking plate 39 and the upper blocking plate 40 The upper blocking plate 40
The upper end surface of the lower blocking plate 39 is located at a height slightly above the conveyance surface, and the blocking plate 39,
Since the upper end surface and lower end surface of 40 are approximately parallel to the conveyance surface as shown in FIG. Flowing down to the 45 side is prevented.
Therefore, even if the succeeding product a catches up with the preceding product a, which is held so as not to flow down, the upper part of the front end surface of the succeeding product a comes into contact with the lower part of the rear end surface of the preceding product a. Since it stops moving in this state, it does not run on top of the preceding product a or go under it.

Then, when the product a is placed on the conveyance surface again by the downward movement of the lower blocking plate 39, the product a is transferred to the second conveyor 10, thereby being transferred to the subsequent product a.
The subsequent products a flow down toward the alignment plate 45 side with a gap between them, and the subsequent products a are prevented from moving by hitting the rear surface of the lower blocking plate 39 that has advanced onto the conveyance surface again. .

Note that the upper end surface of the lower blocking plate 39 and the lower end surface of the upper blocking plate 40 are provided with
It is desirable to attach an elastic material such as rubber to prevent damage.

As specifically explained in the above embodiment,
The product alignment device for a roller tunnel furnace of the present invention includes:
A roller-type furnace in which a roller-type furnace conveyor with many rollers arranged in parallel is installed inside a tunnel-shaped furnace body, and the materials to be fired carried on the furnace conveyor are conveyed in one direction and fired continuously. In a tunnel furnace, there is a first roller-type conveyor connected to the in-furnace conveyor on the exit side of the in-furnace conveyor, and a roller-type first conveyor connected to the downstream end of the first conveyor, which is set at a higher conveyance speed than the first conveyor. Roller type second
A delivery conveyor consisting of a conveyor is installed in series, and the first
At the connection between the conveyor and the second conveyor, there is a lower blocking plate that moves upward from below the conveyance surface to a blocking position where the upper end protrudes slightly above the conveyance surface, and from above the conveyance surface. An upper blocking plate is provided that moves downward together with the upward movement of the lower blocking plate to allow the lower end surface to advance to a position where it comes into contact with the upper end surface of the lower blocking plate at the blocking position. An alignment member is provided at the downstream position of the oven to temporarily stop the flow of the baked products and align them, and the products can be placed against the sides of both the upper and lower blocking plates, or between the upper and lower blocking plates from the conveying surface. The gist is that the product is held in a slightly floating state to temporarily block the flow of the product and restrict the amount of product flowing down to the alignment member. Since the amount of flow is regulated by the blocking plate, the problem of a subsequent product colliding with and riding on a product that has stopped due to hitting the alignment member is eliminated, and it is possible to reliably align the product after firing. In addition, when the lower blocking plate pushes up the product from below, the product can be held slightly above the conveyance surface between it and the upper blocking plate. Even if a succeeding product catches up to a preceding product that is being held against the handle, it is effective in preventing the succeeding product from climbing on top of the preceding product.

[Brief explanation of drawings]

The accompanying drawings show an embodiment of the present invention, and FIG. 1 is a plan view, FIG. 2 is a vertical side view, FIG. 3 is an enlarged vertical side view of the upper and lower blocking plates in contact with each other, and FIG.
The figure is a longitudinal rear view. 1: Furnace body, 4: In-furnace conveyor, 8: Unloading conveyor, 9: First conveyor, 10: Second conveyor, 3
9: Lower blocking plate, 40: Upper blocking plate, a: Product.

Claims (1)

[Claims] 1 A roller-type furnace conveyor with a large number of rollers arranged in parallel is installed inside a tunnel-shaped furnace body, and the objects to be fired loaded on the furnace conveyor are conveyed in one direction and fired continuously. In the tunnel furnace, there is a first roller type conveyor connected to the in-furnace conveyor on the exit side of the in-furnace conveyor, and a roller type first conveyor connected to the in-furnace conveyor, and a roller-type first conveyor connected to the in-furnace conveyor, and a roller-type first conveyor connected to the in-furnace conveyor, and a conveyance speed is set higher than that of the first conveyor, and a roller-type first conveyor is provided at the downstream end of the first conveyor. Connecting roller type second
A carry-out conveyor consisting of a conveyor is arranged in series, and the upper end thereof is projected slightly above the conveyance surface by moving upward from below the conveyance surface at the connection part of the first conveyor and the second conveyor. The lower blocking plate advances to the blocking position, and the lower end surface contacts the upper end surface of the lower blocking plate at the blocking position by moving downward from above the conveyance surface along with the upward movement of the lower blocking plate. An alignment member is provided at a position on the downstream side of the second conveyor to temporarily stop the flow of the baked products and align them, so that the products can be placed in both the upper and lower blocks. By abutting against the side surface of the stop plate, or by holding the product between the upper and lower stop plates in a state slightly lifted from the conveying surface, the flow of the product is temporarily interrupted and the product is directed toward the alignment member. A product alignment device for a roller tunnel furnace characterized by a configuration that regulates the flow rate.