Cold rolling die detection device

Abstract

The utility model discloses a cold rolling die detection device which comprises a line drawing support and a detection support which are located at a discharging end, an installation cylinder is arranged on the line drawing support and located above a finished steel pipe extending out of the discharging end, a marking pen is arranged in the installation cylinder, and a pen point of the marking pen penetrates through the bottom of the installation cylinder. The finished steel pipe rotatably extends out of the discharging end to enable the marking pen to draw a continuous spiral line on the surface of the finished steel pipe, the detection support is provided with a rotating head capable of rotating to adjust the angle, the rotating head is provided with a camera, and the camera faces the finished steel pipe to detect the spiral line on the surface of the finished steel pipe. Whether the spiral line is abnormal or not is detected through the visual detection function of the camera, if the spiral line is abnormal, an abnormal signal is directly transmitted to the controller of the cold pressing equipment, shutdown is achieved, workers do not need to stare at all the time, the labor intensity is greatly reduced, and detection is more efficient and accurate in a visual detection mode.

Description

Technical Field

[0001] This utility model belongs to the field of cold rolling technology of steel pipes, and more specifically relates to a cold rolling die testing device. Background Technology

[0002] In the cold rolling forming equipment for steel pipes, the steel pipe is rolled by two symmetrically arranged rollers. There is a mandrel inside the steel pipe. The rollers and mandrel are combined to form a mold. For details, please refer to the publication number CN101234397A, named "Cold Rolling Taper Key Mold".

[0003] During cold rolling, the mandrel inside the steel pipe is compressed and may break inside the finished steel pipe, causing problems in subsequent steel pipe rolling; the friction between the rotating rolling roller and the steel pipe will also lead to a decrease in the surface and diameter quality of the finished steel pipe.

[0004] Traditionally, inspections are conducted manually at the discharge end of the equipment, which is inefficient, prone to omissions, and labor-intensive. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a cold rolling die inspection device. A continuous spiral line slides out on the finished steel pipe, and the device uses a camera to visually inspect the spiral line to determine whether the die is abnormal. If an abnormality is detected, the device automatically stops the machine. This eliminates the need for constant manual monitoring, greatly reducing labor intensity. The visual inspection method is more efficient and accurate.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cold rolling die inspection device, comprising a marking bracket and an inspection bracket located at the discharge end. The marking bracket is equipped with an installation cylinder positioned above the finished steel pipe extending from the discharge end. A marker pen is installed inside the installation cylinder, with the pen tip passing through the bottom of the installation cylinder and contacting the surface of the finished steel pipe directly above it. The rotation of the finished steel pipe at the discharge end causes the marker pen to draw a continuous spiral line on its surface. The inspection bracket is equipped with a rotatable and adjustable rotating head, and a camera is mounted on the rotating head, facing the finished steel pipe to inspect the spiral line on its surface.

[0007] Furthermore, a sliding plate is provided on the mounting cylinder, and the sliding plate is freely raised and lowered connected to the line marking bracket.

[0008] Furthermore, the skateboard is provided with a groove, and the line drawing bracket is provided with a slider corresponding to the groove.

[0009] Furthermore, a limit block is provided at the top of the skateboard.

[0010] Furthermore, the mounting cylinder is provided with a clamping element that presses the marker pen firmly inside the mounting cylinder.

[0011] Furthermore, the clamping element includes a clamping cap and a clamping spring located on the clamping cap, the clamping cap being threadedly connected to the mounting sleeve, and the end of the clamping spring contacting the tip of the marker pen.

[0012] Furthermore, the clamping component includes a clamping plate and an annular elastic rope located on the clamping plate. The clamping plate is hinged to the mounting cylinder, and the annular elastic rope is hung on a hook on the outer wall of the mounting cylinder.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: After the steel pipe billet is extruded and paralleled by the cold rolling mold inside the cold rolling equipment, it forms a finished steel pipe and extends out from the discharge end of the equipment while rotating. The marker pen above it can draw a continuous spiral line on the surface of the finished steel pipe. When the spiral line reaches the detection position of the camera, the camera's visual detection function detects whether the spiral line is abnormal. If the spiral line is abnormal, the abnormal signal is directly transmitted to the controller of the cold pressing equipment to stop the machine. There is no need for manual monitoring, which greatly reduces labor intensity. The detection is more efficient and accurate through visual inspection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the mechanism of the cold rolling die testing device of this utility model.

[0015] Figure reference numerals: 1. Discharge end; 2. Marking bracket; 3. Detection bracket; 4. Mounting cylinder; 5. Marker pen; 6. Finished steel pipe; 7. Spiral line; 8. Rotating head; 9. Camera; 10. Slide plate; 11. Limiting block; 12. Pressing cap; 13. Pressing spring. Detailed Implementation

[0016] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0018] Reference Figure 1 The present invention will be further described below.

[0019] A cold rolling die inspection device includes a marking bracket 2 and an inspection bracket 3 located on the discharge end 1. The marking bracket 2 is provided with an installation cylinder 4, which is located above the finished steel pipe 6 extending from the discharge end 1. A marker pen 5 is provided inside the installation cylinder 4, and the tip of the marker pen 5 passes through the bottom of the installation cylinder 4 and contacts the surface of the finished steel pipe 6 directly above it. As the finished steel pipe 6 rotates and extends from the discharge end 1, the marker pen 5 draws a continuous spiral line 7 on its surface. The inspection bracket 3 is provided with a rotatable and adjustable rotating head 8, and a camera 9 is provided on the rotating head 8. The camera 9 faces the finished steel pipe 6 and inspects the spiral line 7 on the surface of the finished steel pipe 6.

[0020] like Figure 1 As shown, the steel pipe billet is extruded and paralleled by the cold rolling mold inside the cold rolling equipment to form a finished steel pipe 6, which extends out from the discharge end 1 of the equipment while rotating. The marker pen 5 above it can draw a continuous spiral line 7 on the surface of the finished steel pipe 6. When the spiral line 7 reaches the detection position of the camera 9, the visual detection function of the camera 9 detects whether the spiral line 7 is abnormal. If the spiral line 7 is abnormal, the abnormal signal is directly transmitted to the controller of the cold pressing equipment to stop the machine. There is no need for manual monitoring, which greatly reduces labor intensity. The detection is more efficient and accurate through visual inspection.

[0021] Specifically, if the cold rolling die is working normally, there is a regularity between each turn of the spiral line 7 on the surface of the finished steel pipe 6. Therefore, when a certain turn of the spiral line 7 is different from the previous spiral line 7, such as a broken line, excessive jump, or becoming a straight line, it means that there is a problem with the cold rolling of the steel pipe billet by the die. The machine should be stopped immediately to reduce losses.

[0022] like Figure 1 As shown in this embodiment, preferably, the mounting cylinder 4 is provided with a sliding plate 10, which is freely connected to the drawing bracket 2 for lifting and lowering. The weight of the sliding plate 10 and the mounting cylinder 4 ensures that the tip of the marker pen 5 can always keep in contact with the surface of the finished steel pipe 6 to draw a continuous spiral line 7, thus avoiding the occurrence of breakpoints in the spiral line 7 due to vibration generated during the cold rolling process.

[0023] Specifically, the marker 5 can be a common oil-based marker on the market. The surface of the finished steel pipe 6 will have a layer of lubricating oil, so the marker 5 can draw lines on the surface. At the same time, the spiral lines 7 can be removed later through cleaning and other steps.

[0024] Specifically, a regular marker pen 5 can draw a line of about 500 meters, which is usually enough to draw lines on dozens of finished steel pipes 6 in a batch.

[0025] Specifically, a pen holder can be set up next to the discharge end 1, and several new marker pens 5 can be placed in the pen holder to replace the used marker pens 5.

[0026] Specifically, when the marker 5 is almost used up, the spiral line 7 it draws will fade and break, which can be detected by the camera 9.

[0027] like Figure 1 As shown in this embodiment, preferably, the slide plate 10 is provided with a groove, and the line drawing bracket 2 is provided with a slider corresponding to the groove, so as to ensure the stability of the slide plate 10 in raising and lowering.

[0028] like Figure 1 As shown in this embodiment, preferably, the top of the slide plate 10 is provided with a limit block 11 to prevent the installation cylinder 4 from falling directly after the steel pipe is produced.

[0029] like Figure 1 As shown in the preferred embodiment, the mounting cylinder 4 is provided with a clamping member to press the marker pen 5 into the mounting cylinder 4, so as to prevent the marker pen 5 from vibrating relative to each other in the mounting cylinder 4.

[0030] like Figure 1 As shown in the preferred embodiment, the clamping component includes a clamping cap 12 and a clamping spring 13 located on the clamping cap 12. The clamping cap 12 is threadedly connected to the mounting cylinder 4, and the end of the clamping spring 13 contacts the top of the marker pen 5.

[0031] Specifically, when the clamping cap 12 is screwed onto the mounting cylinder 4, the clamping spring 13 inside is compressed and presses the marker pen 5 into the mounting cylinder 4.

[0032] like Figure 1 As shown, specifically, the end of the marker 5 extends beyond the top of the mounting cylinder 4 to facilitate the removal of the marker 5.

[0033] Specifically, the inner diameter of the mounting cylinder 4 is slightly larger than or equal to the diameter of the marker pen 5, reducing the shaking of the marker pen 5 inside the mounting cylinder 4.

[0034] Another type of clamping component includes a clamping plate and an annular elastic rope located on the clamping plate. The clamping plate is hinged to the mounting cylinder 4, and the annular elastic rope is hung on a hook on the outer wall of the mounting cylinder 4. That is, by contacting the top of the marker pen 5 with the clamping plate, the clamping plate is clamped to the marker pen 5 by stretching the annular elastic rope and hanging it on the hook.

[0035] Specifically, the rotating head 8 is rotatably connected to the detection bracket 3 via a shaft, and a clamping bolt is provided on the shaft of the rotating head 8. Tightening the clamping bolt can fix the angle of the rotating head 8.

[0036] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A cold rolling die detection device characterized by: It includes a marking bracket and a detection bracket located at the discharge end. An installation cylinder is provided on the marking bracket. The installation cylinder is located above the finished steel pipe extending from the discharge end. A marker pen is provided inside the installation cylinder. The tip of the marker pen passes through the bottom of the installation cylinder and contacts directly above the surface of the finished steel pipe. The rotation and extension of the finished steel pipe at the discharge end cause the marker pen to draw a continuous spiral line on its surface. A rotatable head with an adjustable angle is provided on the detection bracket, and a camera is provided on the rotatable head. The camera faces the finished steel pipe to detect the spiral line on the surface of the finished steel pipe.

2. The cold rolling die detection device according to claim 1, characterized by: A sliding plate is provided on the installation cylinder. The sliding plate is freely connected to the marking bracket for lifting and lowering.

3. The cold rolling die inspection device according to claim 2, characterized in that: A chute is provided on the sliding plate, and a slider corresponding to the chute is provided on the marking bracket.

4. The cold rolling die detection device according to claim 2, wherein: A limiting block is provided at the top end of the sliding plate.

5. The cold rolling die detection device according to claim 1, characterized in that: A pressing member for pressing the marker pen in the installation cylinder is provided on the installation cylinder.

6. The cold rolling die detection device according to claim 5, wherein: The pressing member includes a pressing cap and a pressing spring located on the pressing cap. The pressing cap is threadedly connected to the installation cylinder, and the end of the pressing spring contacts the top end of the marker pen.

7. The cold rolling die detection device according to claim 5, characterized in that: The pressing member includes a pressing plate and an annular elastic cord located on the pressing plate. The pressing plate is hinged to the installation cylinder, and the annular elastic cord is hung on a hook on the outer wall of the installation cylinder.

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