JPH04134208U - marking device - Google Patents

Abstract

(57) [Summary] [Purpose] To properly align the axis of the marking head with the center of the coil, even if the coil diameter changes, on a line where the coil is conveyed in an upright state, and to achieve high durability and stability. and make it operational. [Structure] Coil center detection means detects the distance to the outer surface of the coil with a non-contact distance meter 20 placed above the coil 1 to be marked, looking at the outer surface of the coil, and determines the coil center position based on this distance signal; coil 1
a marking head horizontally inserted therein and including a writing head; an X-Y table that supports the marking head and moves it back and forth relative to the coil and transversely in the diametrical direction of the coil; and an elevating means disposed outside the coil for elevating and lowering the coil.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention uses coil identification such as the coil number and material on the inner surface of the wound coil such as steel strip. For more details, please refer to the marking head. This invention relates to a marking device that can accurately position coils according to their dimensions.

0002

[Conventional technology]

As is well known, in order to manage cold-rolled and hot-rolled coils, coils are marked with designated characters and symbols. It is necessary to spray paint to mark the coil identification information. This merkin There is a method to do this on the outer surface of the coil. This method is easy and Accurate marking is possible, but if marking is done on the outer surface of the coil, it may be difficult to place the coil. Depending on the method, the markings may be hidden and cannot be read. The markings may peel off and disappear due to contact with foreign objects, etc. when handling the coil. There are problems such as it becoming unreadable. On the other hand, mark the end face of the coil. Another option is to mark the ends of the coil flush with each other, but in order to make clear markings, We are faced with the difficult practical problem of having to align them neatly.

0003 Therefore, in order to eliminate this drawback, we added markings to the inner surface of the coil as described later. A method of king has been proposed. However, when marking the inner surface of the coil, - Accurate positioning of the marking head compared to marking on the outer surface of the coil. It is difficult to It is dangerous for workers to enter and mark coils in continuous production equipment. dangerous and inefficient. Therefore, the positioning of the marking head on the inner surface of the coil A device is required to automate the marking and marking operations.

0004 Conventionally, there have been only mechanical methods for such positioning. Part one An example is the one described in Japanese Unexamined Patent Publication No. 57-50216. This device is placed in the up-end position (with the coil shaft upright) as shown in Figure 8. The marking head 101 is inserted into the inner surface of the thin plate coil 100, and the marking head 101 is inserted into the inner surface of the thin plate coil 100. Marking is done by spraying paint. In this device, the fixed column 102 On the other hand, a support rod 104 attached to an arm member 103 which is pivotally connected to be able to rise and fall freely extends the sleeve. The marking head 101 is fixed in a predetermined position below the sleeve. A mechanical centering mechanism 105 is provided at the lower end of the sleeve. On the other hand, A coil end face detection rod 106 hangs down from the arm member 103, and a limit is attached to the tip of the rod 106. A switch 107 is provided which, when actuated, stops the lowering of the arm member 103. It has become. In other words, at this point in time when the descent is stopped, the mechanical alignment mechanism 105 has just reached the coil position. The length L of the coil end face detection rod 106 is set in advance so that the center position of the inner surface of the coil end face 106 has been done.

[0005] When marking with this device, the arm member 103 is lowered and the end face of the coil is inspected. The tip of the extraction rod 106 contacts the upper end surface 100a of the coil 100, and the limit switch 107 is activated. When the coil is made, the alignment mechanism 105 is activated to mark a predetermined position on the inner surface of the coil. marking on the inner surface of coil 100 after positioning head 101 It is.

[0006]

[Problem that the idea aims to solve]

However, in the above-mentioned device, the positioning of the marking device is limited to a limit speed. This is done using a contact method such as a switch, so if you use it for a long time, the limit switch Malfunctions and non-detection occur due to misalignment of switches, etc., resulting in lack of durability and hindering stable operation. will come. Also, this marking device can be installed at the up-end. Because of this condition, the coil is transported in an upright state (the center of the coil is horizontal). Marking cannot be done during the process. Furthermore, the coil is transported in an upright position. If the coil diameter changes significantly as the coil is being fed, the center of the inner surface of the coil will also be at the same height. Due to the large change in direction, even if the above device is installed horizontally, the mark It cannot be aligned with the center of the coil of the coil head.

[0007] Therefore, the main problem of this invention was to solve the problem in lines where coils are conveyed in an upright position. , even if the coil diameter changes, the marking head axis can be properly aligned with the center of the coil. The objective is to ensure that the system is durable and operates stably.

[0008]

[Means to solve the problem]

The problem mentioned above is that the coils are transported in an upright position intermittently in a line where the coils are conveyed intermittently. Insert the marking head inside the coil and mark the management information on the inside of the coil. A coil inner surface marking device, Non-contact distance placed above the coil to be marked, looking at the outer surface of the coil The distance to the outer surface of the coil is detected by the meter, and the inside of the coil is detected based on this distance signal. A coil center detection means for determining the center position and a writing head inserted horizontally into the coil. A marking head containing a coil, supporting this marking head, and a coil An , and a lifting means disposed outside the coil for lifting and lowering the X-Y table. It can be solved by

[0009] Furthermore, the part of the marking head that is inserted into the coil is , a coil end detection means that scans in the inner circumferential direction to detect the coil end, and a spray head. a rotating means for rotating the coil end in a circumferential direction, and a signal from the coil end detecting means. Based on the Preferably, the writing head is configured to be rotated by the rotating means.

0010

[Effect]

According to the present invention, the mark is placed above the coil to be marked, facing toward the outer surface of the coil. The distance to the outer surface of the coil is detected by the non-contact distance meter, and the center of the coil is detected. The coil center position is determined by the sensing means based on the distance signal. water in the coil This marking head includes a writing head that is inserted flatly. supports it and moves it back and forth relative to the coil, as well as horizontally in the coil diameter direction. The position on the horizontal plane is adjusted by the XY table. This X-Y Tee Bull can be used to mark text information. Furthermore, the X-Y table By being moved up and down by a lifting means placed outside the coil to be lifted and lowered, Positioning is also performed in the vertical direction. As a result, the marking head is positioned at the center of the coil. be positioned.

[0011] On the other hand, the inner surface of the coil is added to the part of the marking head that is inserted into the coil. a coil end detection means for detecting the coil end by scanning in the inner circumferential direction; Coil end detection is possible by providing a rotating means that rotates the head in the circumferential direction. Based on a signal from the means, when the write head is opposed to the coil end, the coil end If the writing head is configured to be rotated by the rotating means in order to avoid , prevents marking on the coil end that would cause marking defects, and prevents marking on surfaces other than the coil end. can be marked.

0012

【Example】

Next, embodiments will be described with reference to the drawings. Figure 1 is a front view of the coil inner surface marking device according to the present invention. In addition to being conveyed intermittently in the penetrating direction, as shown in the figure, large outer diameter Coils of different widths are conveyed. Figure 2 shows the distance sensor mounting structure. Fig. 3 is a plan view mainly showing the coil conveying equipment extending in the left and right direction. It is a side view seen through the platform.

[0013] 1 is the coil to be marked, and in this example, the coil axis is laid horizontally. It is transported on the transport line in an upright position. 4 erected on the side of this conveyance line A pedestal 2 is provided on the book support. An elevating guide base 3 is fixed to the pedestal 2. This guide base 3 is provided with guide rolls 4, 4 and 5, 5. In addition, an elevating frame 6 is provided so as to be movable up and down relative to the pedestal 2. This vertical movement A guide rail 7 is integrally formed on the arm 6, and is used to drive the lift motor 8. When the elevating frame 6 moves up and down due to movement, the guide rail 7 4, 4 and 5, 5.

[0014] Furthermore, the elevating frame 6 suspends a marking head X-Y stage 9. , a transverse (conveyance or line direction) table 10 is arranged in a groove manner on the upper part of this table. It is made to be able to freely traverse by a traverse drive motor 11. Also rampant table 10 A forward/backward movement table 12 is provided above, and a forward/backward movement drive motor 13 moves the vehicle forward/backward. It is said to be free. When the forward and backward movement table 12 moves forward and backward, a A guide rail 14 is guided between guide rolls 15. Also At the center of the front end of the X-Y stage 9, there is a proximity sensor 16 that detects the inner surface of the coil. Furthermore, a proximity sensor 17 for detecting coil diameter abnormality is attached to the lower part of the front part. ing.

[0015] On the other hand, a rotating arm 19 is attached to the lifting guide base 3 via a vertical rotating shaft 18. Horizontally around the rotation axis 18 for evacuation when lifting the coil with a crane It is said that it can be rotated. At the tip of the rotating arm 19, there is a , a non-contact distance meter 20 using ultrasonic waves or laser light is attached.

[0016] Figure 4 is a perspective view of the marking head section and the forward/backward moving table section. In front of the cable 12, a rotary shaft 21 has a paint spray head as a writing head. A pad 22 and an inner distance meter 23 are each rotatably arranged. Real truth In the embodiment, the rotating shaft 21 and the spray head 22 constitute a marking head. has been completed. A distance sensor 24 is attached to the spray head 22. .

[0017] Next, the operation of the device of the present invention will be explained. Coil 1 to be marked is a coil conveying equipment (generally called a 1-pitch coil controller). At predetermined intervals, the vehicle is conveyed in an upright position on the V-seat 25 (see Figure 6). , stops at the marking device position.

[0018] First, the distance meter 20 operates and measures the distance to the outer peripheral surface of the coil 1. this distance Align the waiting marking head with the center of coil 1 based on the actual measurement value. The amount of movement is calculated. The principle of calculating this amount of movement is based on the known reference floor position, Arithmetic calculations can be performed based on the inclination angle of the V seat 25, the measured distance to the outer peripheral surface of the coil 1, etc. Since you can ask for more information, I won't go into details again. Thus, the waiting ma When the amount of movement to align the king head with the center of coil 1 is calculated, this The lifting motor 8 is started based on the Mark the mark while feeding back the amount of movement using a movement amount detector (not shown). Raise and lower the marking head X-Y stage 9 to center the marking head on the coil 1. Match.

[0019] Next, move the transverse table 10 and the forward/backward table 12 to mark the mark. Insert the measuring head into coil 1 and position it so that it matches the center. cormorant. In the embodiment, the proximity sensor 16 or 17 at the front of the X-Y stage 9 Positioning for forward and backward movement is performed by detecting the inner surface of the coil or the end surface of the coil. However, as with the outer surface of the coil described above, the position of the coil in the forward and backward directions can be detected using a non-contact method. It is preferable to do so from the viewpoint of durability.

[0020] When the marking head is inserted into the coil 1, the inner distance meter 23 rotates in the circumferential direction. and detect the end of coil 1. As this inner distance meter 23, for example, as shown in FIG. As shown, the light projector 23A and the C that detects the reflected light reflected on the inner surface of the coil. A device consisting of a light receiver 23B such as a CD (solid-state image sensor) is used, and The first end of the coil can be detected based on the change in the light receiving position depending on the presence or absence of a corresponding step. if If the outlet of the spray head 22 is facing the end of the coil 1, the coil 1 Rotate the spray head 22 to avoid the edges. In this state, spray head Paint is sprayed from the door 22 onto the inner surface of the coil 1, and predetermined coil management information is written. written as a character. At this time, the distance between the spray head 22 and the inner surface of the coil 1 is The distance between them is detected by, for example, a magnetic distance sensor 24, and The separation distance can be finely adjusted by moving the lever. After this fine adjustment, spray head 2 2 is moved in the X-Y direction to write a predetermined character.

[0021] By the way, the distance meter 20 that detects the outer surface of the coil 1 detects an abnormality in the logistics process of the manufacturing line. It can also be used to judge. Recent lines have been marketed from the perspective of strengthening quality assurance. There is a coil sample collection offline and extraction weighing facility upstream of the king device installation location. Or the order in which the coils are processed, such as a two-stage front line winding device, tracking is likely to be disrupted. Therefore, as shown in Figure 7. uni, the relevant information is sent from the upper process computer that tracks each coil information. After receiving the coil information, compare this with the coil outer diameter measured with the distance meter 20. , if the difference is small, it is considered normal and the process computer The information on the coil is marked. If the difference in outer diameter is large, Should the buzzer be turned on to indicate a transport (logistics) abnormality, notify the workers, and then shut down? , based on the data measured by the distance meter 20, the data of the host process computer is Appropriate items can be selected from the list and marked.

[0022] The marking method in this invention is to use paint using a method such as a jet nozzle. A spray method or a jet pen contact method can be used.

[0023] (Example) When the above equipment was newly installed, the spray head was damaged due to collision with the coil. Previously, the frequency was 3 cases/month, but 1 case/month (however, coil feeding pitch (Based on defects), and the frequency of reading errors has decreased from the previous 5 cases/100 coils. However, the number decreased to 1-2 cases/100 coils. Furthermore, the troubles after this equipment are All locking mistakes have been resolved.

[0024]

[Effect of the idea]

As described above, according to the present invention, in a line where the coil is conveyed in an upright state, , even if the coil diameter changes, the marking head axis can be properly aligned with the center of the coil. It also has high durability and stable operation.

[Brief explanation of drawings]

FIG. 1 is a front view of an example of a marking device according to the present invention.

FIG. 2 is a plan view of an example of the marking device.

FIG. 3 is a side view of the marking device.

FIG. 4 is a perspective view of essential parts.

FIG. 5 is an explanatory diagram of a detection mode of a coil end.

FIG. 6 is a side view of the coil in a conveyed state.

FIG. 7 is a flow sheet of a coil tracking example.

FIG. 8 is a front view showing an example of a conventional marking device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1... Coil to be marked, 2... Frame, 8... Lifting motor, 9... Marking head X-Y stage, 10... Traversing table, 11... Traversing drive motor, 12... Traversing table, 20... Distance meter, 22... Spray head

Claims (2)

[Scope of utility model registration request] 1. A coil inner surface marking device for marking management information on the inner surface of the coil by inserting a marking head into the coil in a line where the coil is intermittently conveyed in an upright state, the coil being marked above the coil to be marked. a coil center detection means for detecting the distance to the outer surface of the coil with a non-contact distance meter placed facing the outer surface of the coil, and determining the coil center position based on this distance signal; and a writing head inserted horizontally into the coil. a marking head containing and supporting this marking head,
A marking device characterized by comprising an X-Y table that moves the X-Y table back and forth relative to the coil and traverses it in the diameter direction of the coil, and an elevating means disposed outside the coil that raises and lowers the X-Y table. . 2. A portion of the marking head inserted into the coil further includes a coil end detection means for detecting the end of the coil by looking at the inner surface of the coil and scanning in the inner circumferential direction, and a coil end detection means for rotating the writing head in the circumferential direction. and rotating means for rotating the spray head, the spray head being configured to rotate the spray head by the rotating means to avoid the coil end when the spray head faces the coil end based on a signal from the coil end detection means. 1. The marking device according to 1.