JPH038404Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a scraper device implemented in a rubber sheet material cutting and removal device, and more specifically, the invention relates to a scraper device that is implemented in a rubber sheet material cutting and removal device. The present invention relates to a scraper device for removing cut pieces by peeling them off from a belt of a conveyor and automatically and reliably kicking them out of the conveyor.

[Prior art]

In general, the raw rubber for tires contains foreign substances such as metal and wood chips, so these foreign substances must be removed before forming the tire. Metals in particular have a serious effect on the accuracy of the tire. , it is necessary to definitely remove this.

By the way, conventionally, when detecting metal pieces mixed in rubber sheet material, a metal detector is installed in the middle of a conveyor, and when metal pieces are detected in the rubber sheet material being conveyed, a metal detector is installed. , temporarily stop the conveyor.

Then, while reversing the conveyor, the metal-containing part of the rubber sheet material is moved back to the worker's position, and the worker uses a scalpel to cut the metal-containing part and remove it outside the conveyor. I was gone.

By the way, the work of removing the metal-containing cut parts as described above was all done manually, which resulted in extremely low work efficiency, and in order to peel off and remove the cut parts that were stuck tightly on the belt conveyor, it was difficult to remove them. This required a great deal of effort and time.

[Purpose of invention]

This invention was devised by focusing on the conventional problems, and its purpose is to automatically cut the metal mixed in the rubber sheet material and then cut it into the conveyor belt. To provide a scraper device that efficiently peels off cut pieces adhering to a conveyor and automatically and reliably kicks them out of a conveyor to remove them.

[Structure of the idea]

In order to achieve the above-mentioned purpose, this idea includes a cutting device that can move up and down on the conveyor and a scraper device that can move horizontally in a direction perpendicular to the conveyance direction of the conveyor. The cylinder of the scraper device is installed on the side frame installed on the side of the conveyor, and the cylinder rod is slid along the top surface of the belt of the conveyor via a swing holding mechanism at the tip of the cylinder rod. , and a swingable scraper having an acute-angled cutting edge is attached, and a swing stopper and a restoring stopper for the scraper are respectively provided on the opposing side frames.

[Example of idea]

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

FIG. 1 shows a front view of this invention implemented on a conveyance line X for rubber sheet material W. This conveyance line X includes a roughing roll 10 and a finishing roll 10
0, the first conveyor 20 and the second conveyor 30
The conveyance speed of the second conveyor 30 (for example, 47 m/Sec) is set to be slightly faster than the conveyance speed of the first conveyor 20 (for example, 42 m/Sec). .

A well-known metal detector 40 is installed in the middle of the second conveyor 30 to detect that metal is mixed in the rubber sheet material W.
A cutting and removing device 50 is installed on the downstream side of the metal detector 40, which is connected to the metal detector 40 via a timer (not shown) and which cuts and removes the rubber sheet material W1 (cut pieces) in the portion where metal is mixed. . As shown in FIGS. 2 to 8, the cutting and removing device 50 includes a cutting device 6 that cuts the rubber sheet material W into a predetermined width.
0, and a scraper device 70 that peels the cut pieces W1 of the metal-containing portion cut by the cutting device 60 from the upper surface of the belt of the second conveyor 30 and kicks them out to the outside of the conveyor.

As shown in FIGS. 2 and 3, in the cutting device 60, gate-shaped frames 61a and 61b are installed on the second conveyor 30 at a predetermined interval. The frame 62 includes a cutter cylinder 63a, which is connected to the metal detector 40 via a timer (not shown).
63b are provided vertically. A cutter 65 is attached to the tip of the rod 64 of the cutter cylinders 63a, 63b and moves up and down in the vertical direction toward the second conveyor 30 to cut the metal-containing portion W1 of the rubber sheet material W being conveyed. It is composed of

Next, as shown in FIGS. 2 and 3, the scraper device 70 has gate-shaped frames 61a and 61b.
A scraper cylinder 71 is horizontally attached to the side frame 66 of the cylinder rod 72, and a cutting edge 74 is held at an acute angle at the tip of the cylinder rod 72 via a swing holding mechanism 73 as shown in FIGS. 8 and 9. A scraper 75 formed in is pivotally supported.

The scraper 75 is attached perpendicularly to the upper surface of the belt 30a of the second conveyor 30, and the tip of the cutting edge 74 of the scraper 75 is attached to the upper surface of the belt 30a of the second conveyor 30.
It is finished in a substantially horizontal state so that it slides while in contact with a.

The upper end of the scraper 75 is swingably supported by brackets 76 and 77 forming the swing holding mechanism 73 via a support shaft 77a, as shown in FIGS. 4 to 7. A band brake 78 is interposed between the support shaft 77a of the scraper 75 and the bracket 76 to maintain the scraper 75 at a predetermined swinging position relative to the belt 30a.

Therefore, the support shaft 77a of the scraper 75 is always urged upward by the elastic force of the band brake 78.

Next, the side frame 66 to which the scraper cylinder 71 is attached, and the side frame 66
A restoring stopper 80 and a swinging stopper 8 for the scraper 75 are attached to the side frame 79 facing oppositely to the scraper 75 .
1 are installed respectively.

When the scraper 75 is moved from the left side to the right side in FIG. 3 by the operation of the cylinder 71, the swing stopper 81 swings the scraper 75 counterclockwise in FIG. 3 to peel it off from the upper surface of the belt. This is for kicking the cut pieces W1 out of the second conveyor 30 and removing them. Specifically, a protrusion is provided on the side frame 79 to support the support shaft 77.
By abutting the upper end of the scraper 75, which is moving in a swingably supported state via a, the scraper 75 is swung counterclockwise about the support shaft 77a, and further the scraper 75 and the The cut piece W1 is kicked out of the second conveyor 30 by the impact force when the swing stopper 81 collides with the swing stopper 81.

Further, after the scraper 75 kicks out the cut piece W1, its swinging position is held by the band brake 78 that constitutes the swing holding mechanism 73, and in this state, the cutting edge 74 of the scraper 75 is moved to the second position.
It returns to the original standby position by the contraction operation of the cylinder 71 without contacting the belt 30a of the conveyor 30.

The upper end of the scraper 75, which has moved to the standby position, now hits the restoring scraper 80 provided on the side frame 66, rotates clockwise in FIG. 2, and is maintained in its original vertical position. .

Next, the operation of the present invention constructed as described above will be explained.

First, while the rubber sheet material W is being sequentially conveyed from the rough kneading roll 10 through the first conveyor 20 and the second conveyor 30 to the finishing roll 100 side, a part of the rubber sheet material W contains foreign matter such as metal. If the metal is mixed in, it is detected when the metal mixed portion W1 passes through the metal detector 40 installed on the second conveyor 30.

Then, the drive motor (not shown) of the second conveyor 30 connected to the metal detector 40 stops, and at the same time, the second conveyor 30 also stops, and at the same time, the second conveyor 30 is connected to the second conveyor 30 via a timer (not shown). The cutting and removing device 50 is activated after a predetermined period of time.

Note that even when the second conveyor 30 is stopped, the first conveyor 20 moves at a constant speed and sequentially conveys the rubber sheet material W.

The operation of the cutting/removal device 50 is such that the cutter cylinders 63a and 63b of the cutting device 60 begin to extend, and the cutter 65 is lowered to stop the rubber sheet of the metal-containing portion W1 on the second conveyor 30. Cut the material W into a predetermined width. Metal-containing portion W1 of rubber sheet material W by cutter 65
At the same time as the cutting is completed, the cylinder 71 of the scraper device 70 starts to extend, and the scraper 75 is moved from the left side to the right side in FIG. 3.

At this time, the cutting edge 74 of the scraper 75 slides while contacting the upper surface of the belt 30a, so that the cut piece W1 of the rubber sheet material W that is in close contact with the belt 30a is peeled off. And scraper 7
5 moves to the position where the peeling operation of the cut piece W1 ends, the swing stopper 81 abuts the upper end of the swing stopper 81 provided on the side frame 79 as described above, and the scraper 75 is moved to the support shaft. 7
7a as a fulcrum, and at the same time, the scraper 75 and the swing stopper 81
The impact force when the two collide with each other causes the cut piece W1 to move to the second
It kicks out the conveyor 30.

Further, after the scraper 75 kicks out the cut piece W1, its swinging position is held by the band brake 78 that constitutes the swing holding mechanism 73, and in this state, the cutting edge 74 of the scraper 75 is moved to the second position.
It returns to the original standby position by the contraction operation of the cylinder 71 without contacting the belt 30a of the conveyor 30.

The upper end of the scraper 75, which has moved to the standby position, now hits the restoring scraper 80 provided on the side frame 66, rotates clockwise in FIG. 2, and is maintained in its original vertical position. .

Such a series of operations is performed within several seconds after the metal detector 40 detects that metal is mixed into the rubber sheet material W.

After the scraper 75 kicks out the cut piece W1 to the outside of the second conveyor 30, the drive motor of the second conveyor 30 starts driving again.
The rubber sheet material W sequentially conveyed from the first conveyor 20 is conveyed to the finishing roll 100 side.

Here, since the conveyance speed of the second conveyor 30 is set faster than the conveyance speed of the first conveyor 20 as described above, the rubber sheets accumulated at the connection part between the first conveyor 20 and the second conveyor 30 Material W
The rubber sheet material W can be immediately transported in its original state due to the difference in transport speed.

[Effect of idea]

This idea consists of installing a cutting device that can move up and down above the conveyor, and a scraper device that can move horizontally in a direction orthogonal to the conveyance direction of the conveyor, on a frame built above the conveyor as described above. and the cylinder of the scraper device,
It is attached to the side frame installed on the side of the conveyor, and at the tip of the cylinder rod, it slides along the top surface of the conveyor belt via a swing holding mechanism, and the cutting edge is formed at an acute angle. A scraper is attached, and a swing stopper and a restoring stopper for the scraper are provided on the opposing side frames, so that after automatically cutting off the metal mixed in the rubber sheet material, the conveyor This has the effect of efficiently peeling off the cut pieces adhering to the conveyor belt and automatically and reliably kicking them out to the outside of the conveyor.

[Brief explanation of the drawing]

Fig. 1 is a front view of an automatic cutting and removing device for metal-containing rubber sheet materials in which this invention is implemented, Fig. 2 is an enlarged front view of the cutting and removing device, Fig. 3 is a side view of Fig. 2, and Figs. Figure 5 is a front view and side view of the swing holding mechanism, Figures 6 and 7 are a side view and front view of the bracket that supports the scraper, Figures 8 and 9 are
The figures are a front view and a side view of the scraper. 20...First conveyor, 30...Second conveyor, 40...Metal detector, 50...Cutting and removing device, 60...Cutting device, 70...Scraper device, W...Rubber sheet material, W1... Cut piece.

Claims (1)

[Scope of utility model registration request] A cutting device that can move upward and downward toward the top of the conveyor and a scraper device that can move horizontally in a direction orthogonal to the conveyance direction of the conveyor are installed on a frame built above the conveyor, and a cylinder of the scraper device is installed. , is attached to the side frame installed on the side of the conveyor, and at the tip of the cylinder rod is a swinging rod that slides along the top surface of the conveyor belt via a swinging holding mechanism and has an acute-angled cutting edge. A scraper device, characterized in that a movable scraper is attached, and a swing stopper and a restoring stopper for the scraper are respectively provided on the opposing side frames.