JPH07186298A - Center line paining apparatus for strip like member - Google Patents

Abstract

PURPOSE:To inexpensively provide a center line painting apparatus having a simple structure capable of certainly applying a center line even when there is meandering or foreign matter in a center groove. CONSTITUTION:In an apparatus applying a center line to the center groove of a strip like member l fed by a conveyor, the first arm member 41 supported so as to be freely shaken left and right as well as up and down with respect to the support member provided above conveyor and the guide pin fixed to the first arm member 41 are provided. Further, the second arm member 43 pivotally mounted so as to be freely shaken up and down with respect to the first arm member 41 and the line marker 44 fixed to the second arm member 43 and positioned in front of the guide pin 42 are provided. The tip of the guide pin 42 and the nozzle tip of the line marker 44 are fitted in the center groove 2 of the fed strip like member 1 almost simultaneously.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for painting a center line on a belt-shaped member such as a tread member which is a tire constituent member.

[0002]

2. Description of the Related Art A tread member extruded from an extruder has a center groove formed in the center, but it is noticeable in advance in order to surely align the center when it is cut to a constant length and wound around a drum. It is practiced to paint the center line in white etc.

An example of the center line painting device is described in Japanese Patent Application No. 4-348912 filed by the same applicant. The apparatus of the same example has a detector that monitors the center groove of the belt-shaped member and detects foreign matter in the groove (for example, burned rubber or a bulging portion due to air filling) as an image, and the size of the foreign matter detected as an image. Is calculated and compared with a reference value, and when it is determined that the reference value is exceeded, a fixing means for fixing the line marker slidably supported to the left and right is provided.

The line marker suspended from above is placed and fitted with the tip of its nozzle in the center groove of the belt-shaped member being conveyed, and the center line is painted in the center groove while moving left and right along the center groove. I will do it. If there is foreign matter in the center groove, the nozzle tip of the line marker may be flipped up by the foreign matter and jump out from the center groove.Therefore, the foreign matter is detected in advance and its size is calculated and compared with a reference value. When the standard value is exceeded, the line marker is fixed to prevent the line marker from jumping out of the center groove.

[0005]

[Problems to be Solved] However, if the foreign matter in the center groove and the meandering of the center groove itself are at the same position, the fixed line marker cannot follow the meandering of the center groove and eventually comes out of the center groove. become. In addition, complicated steps such as calculating the size of the foreign matter and comparing it with a reference value and expensive means are required.

The present invention has been made in view of the above points,
The purpose is to provide a simple and low-cost centerline paint device in which the tip of the line marker nozzle does not always come off from the center groove even if the foreign matter in the center groove and the meandering of the center groove itself are at the same location. It is in.

[0007]

In order to achieve the above object, the present invention relates to a support member above a conveyor in a device for painting a center line in the center groove of a belt-shaped member conveyed by a conveyor. The first that is slidable to the left and right and is also swingable up and down
An arm member, a guide pin fixed to the first arm member, a second arm member pivotally attached to the first arm member in a vertically swingable manner, and the guide pin fixed to the second arm member. And a line marker located in front of the line marker, and the center line of the belt-shaped member in which the tip of the guide pin and the tip of the nozzle of the line marker are placed and fitted from above in the center groove of the belt-shaped member to be conveyed. It was a paint device.

When there is a foreign substance in the center groove, even if the guide pin swings upward due to the foreign substance, the tip of the nozzle of the line marker is still in the center groove, and when the line marker swings upward due to the foreign substance, it is guided. Since the pin is in the center groove and guides the line marker to prevent the line marker from coming off the center groove, even if the foreign matter in the center groove and the meandering of the center groove themselves are in the same place, the guides move in sequence. Either the pin or the line marker is always in the center groove and follows the meandering of the center groove, and the tip of the nozzle of the line marker can always be positioned in the center groove. Further, the structure is simple and low cost can be realized.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in FIGS. 1 to 6 will be described below. In this embodiment, the center line is painted in the process of transporting the tread member 1 continuously extruded from the extruder by the roller conveyor 5, and FIG. 1 is a side view showing the outline of the whole. is there.

In FIG. 1, a tread member 1 is conveyed on a roller conveyor 5 from left to right, and a ring-shaped illuminating device 6 is arranged above the tread member 1 to illuminate the same. The television camera 7 captures an optical image of the surface of the tread member 1 passing through a place from directly above. A center line painting device 10 is arranged on the downstream side of the television camera 7.

As shown in the sectional view of FIG. 2, the strip-shaped tread member 1 extruded from the extruder has a pair of protrusions 3 formed in parallel at the center of the surface, and a center groove 2 is formed between both protrusions 3. Has been done. The distance between the left and right ridges 3 is about 2.2 mm
The center line painting device 10 paints a center line having a width of about 2 mm in the center groove 2 between them.

The structure of the center line painting device 10 is
As shown in FIGS. 3 to 5, the support frames 11 are provided on the left and right conveyor frames 5a of the roller conveyor 5, respectively.
Is provided upright, and a slide support member 15 is slidably supported left and right by two upper and lower guide rods 12 and 13 which are installed between both columns 11. In addition, upper and lower guide bars are provided between the left and right support frames 11.
A screw rod 14 is rotatably installed in parallel in the middle of 12 and 13,
The screw rod 14 penetrates and is screwed into the sliding support member 15, and the rotation of the screw rod 14 allows the sliding support member 15 to move left and right while being guided by the guide rods 12 and 13.

On one support frame 11 side, a motor 16 and a rotary encoder 20 are mounted on a bracket 16 protruding outward.
Etc., the rotational drive of the motor 17 is transmitted to the output shaft 19 via the speed reducer 18, and the output shaft 19 is connected to the screw rod 14 so that the motor 17 drives in the forward and reverse directions to rotate the screw rod. The sliding support member 15 moves to the left and right via 14. The rotation of the output shaft 19 operates the rotary encoder 20 via the belt transmission means 21, and the detection signal of the rotary encoder 20 is used for the movement control of the slide support member 15.

A bearing 30 is vertically provided on the lower surface of the sliding support member 15, and a rotary shaft 31 is rotatably supported by the bearing 30, and a pair of right and left swing frames is provided from the rotary shaft 31. 32 is projected toward the downstream side. The left and right swing frames 32 are connected to each other by a cross bar 33, a support shaft 34, and a V-shaped guide 35 at their ends so that they can swing up and down integrally around a rotary shaft 31. An air cylinder 37 whose upper end is pivotally supported by a bracket 36 protruding above the downstream vertical surface of
The tip of the rod 37a that protrudes downward is attached to the crossbar.
It is pivotally attached to a protrusion 38 projecting from 33, and the swing frame 32 swings up and down by the expansion and contraction of the rod 37a by the driving of the air cylinder 37.

A first arm member 41 is supported at its base end by a linear ball bearing 40 on a support shaft 34 near the tip of the swing frame 32, and the first arm member 41 has a linear ball bearing 40. Thus, the support shaft 34 can be slid left and right, and at the same time, can be vertically swung about the support shaft 34. The first arm member 41 can be placed on the V-shaped guide 35 at the tip of the swing frame 32. The V-shaped guide 35 has a V-shape with a smooth upper edge as shown in FIG. When the first arm member 41 which is recessed and is slidable to the left and right is placed, the first arm member 41 can be moved and positioned at the lowest central position of the V-shaped guide 35.

A rod-shaped guide pin 42 is fixed to the first arm member 41 that slides and swings in this manner, and the tip thereof projects. A pair of second arm members 43 are pivotally supported by a pivot shaft 41a so as to sandwich the tip end portion of the first arm member 41 from both left and right sides, and project further downstream, and a rod-shaped tip end of the second arm member 43 is provided. The line marker 44 is fixed at an angle.

That is, the pair of second arm members 43 swingable with respect to the first arm member 41 are provided between the first arm member 41.
The guide pin 42 fixed to the position is positioned, and the line marker 44 is fixed to the tip, and the guide pin 42 and the line marker 44 are positioned in front of each other at the same horizontal position. The guide pin 42 swings with respect to the swing frame 32, and the line marker 44 can swing with respect to the swinging first arm member 41.
With respect to the horizontal movement, the first arm member 41 slides with respect to the swing frame 32 and moves together.

The guide pin 42 is rod-shaped and has a thin pin like a needle at its tip, while the line marker 44 is cylindrical and has a nozzle 44a at its tip, and a tube (not shown) is a line marker 44. Is connected to the base end of the tread member 1 to supply white ink (other colors may be used). When the nozzle 44a traces the surface of the tread member 1, the ink exudes to paint a white line. can do.

Center line painting apparatus 10 of this embodiment
Has the above-mentioned structure, and its working process will be described below. The tread member 1 extruded from the extruder and conveyed by the roller conveyor 5 is first illuminated by the illumination device 6 and an optical image near the center portion including the center groove 2 is picked up by the television camera 7 to determine the position of the center groove 2. Is detected.

Based on the result of detecting the position of the center groove 2, the motor 17 is drive-controlled to move the sliding support member 15 left and right, and the left and right positions of the guide pin 42 and the line marker 44 are controlled to match the center groove 2. To be done. When the swing frame 32 is positioned above as shown by the phantom line in FIG. 4, the first arm member 41 is placed on the V-shaped guide 35 and the guide pin 42 and the line marker are attached to the swing frame 32.
Since 44 is positioned right and left, it can be aligned with the center groove 2.

Next, the rocking frame 32 that supports the guide pins 42 and the line markers 44 positioned to the left and right is rocked downward by the drive of the air cylinder 37, and the tips of the guide pins 42 and the line markers 44 are moved to the tread member 1. Place it in the center groove 2. At this time, even after the tip of the guide pin 42 is in contact with the center groove 2, the swing frame 32 is slightly swung downward, so that the first arm member 41 integrated with the guide pin 42 is formed.
Is rocked with respect to the rocking frame 32 and separated from the V-shaped guide 35 so that the first arm member 41 can freely slide left and right.

3 and 4 show this state.
As described above, the tip of the guide pin 42 is placed in the center groove 2, and the line marker 44 also swings the second arm member 43 upward with respect to the first arm member 41 so that the nozzle 44a at the tip is formed. Placed in the center groove 2, the guide pin 42 and the line marker 44 are diagonally positioned substantially parallel to each other.

When the tread member 1 is conveyed by the roller conveyer 5 in such a state, the guide pin 42 and the line marker 44, which are placed with their tips fitted in the center groove 2, are free to move to the left and right. Therefore, the center line can be drawn in the center groove 2 by the ink that is guided by the left and right ridges 3 and moves along the center groove 2 without derailing and oozes from the nozzle 44a of the line marker 44. Even if the center groove 2 meanders, the line marker 44 can follow the meandering and draw a center line in the center groove 2.

Considering the case where foreign matter is present in the center groove 2 with reference to FIGS. 6A and 6B, the guide pin 42 first rides on the foreign matter 50 when the tread member 1 is conveyed. When the line marker 44 is in the center groove 2 and its left and right movements are restricted, the guide pin 42 that moves left and right together with the line marker 44 is also a foreign substance.
Even if it is flipped up by 50, it does not come off from the center groove 2. Then, when the line marker 44 rides on the foreign matter 50, the guide pin 42 is in the center groove 2 and its left and right movements are restricted, so that the line marker 44 does not come off the center groove 2 and pull the center line.

As described above, the guide pin 42 and the line marker 44, which are moved forward and backward, guide each other even if there is a foreign substance 50 in the center groove 2 and prevent them from coming off the center groove 2 so that the center pin 2 surely comes into contact with the center groove 2. You can paint the center line.

Even if there is a foreign matter in the center groove 2 meandering position, when the guide pin 42 rides on the foreign matter, the line marker 44 follows the meandering center groove 2 and moves to the left and right, and then the line marker. When the 44 gets on a foreign object, the guide pin 42 follows the meandering center groove 2 to move the line marker 44 left and right, so that the line marker 44 does not always come out of the center groove 2. You can only paint the centerline within 2.

As described above, the center line painting device 10 of this embodiment does not require a complicated structure such as capturing a foreign substance in the center groove with a camera to calculate the size and compare it with a reference value, and is simple and inexpensive. With this unique structure, the center line can be reliably painted on the center groove.

[0028]

According to the present invention, the guide pin and the line marker, which move one after another, move to the left and right together, and one of them is always in the center groove and follows the center groove. Even if the meandering of the line is at the same place, either the guide pin or the line marker, which are in front of each other, is always in the center groove and follows the meandering of the center groove, so that the nozzle tip of the line marker is always positioned in the center groove to ensure the center. You can paint the center line on the groove. Further, the structure is simple and low cost can be realized.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram to which a centerline painting device according to an embodiment of the present invention is applied.

FIG. 2 is a sectional view of a tread member.

FIG. 3 is a front view of the centerline painting apparatus.

FIG. 4 is a side view of the center line painting device with a part thereof omitted.

FIG. 5 is a view on arrow V in FIG.

FIG. 6 is an explanatory diagram for explaining movements of a guide pin and a line marker.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Tread member, 2 ... Center groove, 3 ... Ridge, 5 ... Roller conveyor, 6 ... Illumination device, 7 ... Television camera, 10 ...
Center line paint device, 11 ... Support frame, 12,
13 ... Guide rod, 14 ... Screw rod, 15 ... Sliding support member, 16 ... Bracket, 17 ... Motor, 18 ... Reducer, 19 ... Output shaft, 20
... rotary encoder, 21 ... belt transmission means, 30 ... bearing, 31 ... rotating shaft, 32 ... rocking frame, 33 ... crossbar,
34 ... Shaft, 35 ... V-shaped guide, 36 ... Bracket, 37 ... Air cylinder, 38 ... Protrusion, 40 ... Linear ball bearing,
41 ... First arm member, 42 ... Guide pin, 43 ... Second arm member, 44 ... Line marker, 50 ... Foreign matter.

Claims (1)

[Claims] 1. A device for painting a center line in a center groove of a belt-shaped member conveyed by a conveyor, which is slidable left and right with respect to a supporting member above the conveyor, and is also swingably supported up and down. A first arm member; a guide pin fixed to the first arm member; a second arm member pivotally attached to the first arm member in a vertically swingable manner; and a second arm member fixed to the second arm member. A line marker located in front of the guide pin, wherein the tip of the guide pin and the tip of the nozzle of the line marker are placed and fitted from above in the center groove of the belt-shaped member to be conveyed. Center line paint device for belt-shaped members.