Reversible background plate of foreign fiber machine

Abstract

The utility model provides a reversible background plate of a foreign fiber machine, which comprises a background plate body, a left wall plate and a right wall plate, the left side and the right side of the background plate body are symmetrically arranged, and the side surface of the background plate body is sequentially provided with a U-shaped groove, a second screw hole, a third screw hole and a fourth screw hole from top to bottom; a first screw hole, a second through hole, a third through hole and a fourth through hole are sequentially formed in the side face, corresponding to the background plate body, of each of the left wall plate and the right wall plate, when the background plate body is arranged in a front face mode, the U-shaped groove and the first screw hole are fixed through a first screw, and the second screw hole and the third through hole are fixed through a second screw; the fourth screw hole and the fourth through hole are fixed through a third screw; when the background plate body is arranged on the back face, the third screw hole and the second through hole are fixed through a fourth screw, and the second screw hole and the third through hole are fixed through a second screw. Scale marks for camera adjustment are arranged on the reverse side of the reversible background plate of the foreign fiber machine, the background plate is designed to be of a rotary turnover structure, the front side of the background plate body serves as a background, the reverse side of the background plate body is corrected, the original camera correction process is simplified, and the equipment debugging time is saved.

Description

Technical Field

[0001] The utility model relates to a foreign fiber separator, in particular to a flip - over background plate of a foreign fiber separator. Background Technique

[0002] For a foreign fiber separator, the camera is one of its core components: the cotton flow passes through the area detected by the camera. The camera continuously takes pictures of the passing cotton flow and transmits the pictures to the image detection module; the detection module analyzes and identifies the pictures to determine whether there are foreign fibers in the cotton flow; when a "foreign fiber" is "found", a signal is sent to the spray valve at the corresponding position to drive the spray valve to work and blow out the foreign fiber from the cotton flow. Therefore, the clarity of the pictures taken by the camera and the accuracy of the shooting position directly determine whether the foreign fibers can be identified and blown out by the spray valve.

[0003] In order to enable the camera to clearly take pictures of the cotton flow, a "background plate" needs to be placed at the end of the camera shooting direction. Its function is to provide a background of an appropriate color for the taken pictures of the cotton flow, so as to more clearly "set off" the cotton flow and the foreign fibers in the cotton flow.

[0004] The camera lens has a fixed focal length. In order to take clear pictures of the cotton flow, the focus of the camera needs to coincide with the position of the cotton flow. And in order to "accurately" blow out the foreign fibers as much as possible and carry out as little cotton as possible, 32 nozzles are arranged side by side above the plane where the cotton flow passes, and each nozzle only corresponds to a very small area of the cotton flow. After the camera takes pictures, the position of the cotton flow on the pictures needs to be matched with the actual position of the cotton flow, so as to ensure that the found foreign fibers can be blown to the corresponding positions by the nozzles.

[0005] To solve the problem of the background of the taken pictures, a fixed "background plate" is set. In patent CN202221009963, there is a "background plate", and usually this background plate is fixed on the lighting detection device. In order to focus the camera clearly and accurately, usually a "focusing paper" is placed during equipment installation, and the camera ensures the clarity and position accuracy of the taken pictures of the cotton flow through the "focusing paper". In actual on - site applications, camera focusing is a heavy and complex task: the debugging personnel need to paste a focusing paper on the original background plate, and the position of the focusing paper needs to be accurately pasted. Since the foreign fiber separator is very wide, the work of pasting the focusing paper requires two people to cooperate on both sides of the foreign fiber separator to complete. Content of the Utility Model

[0006] The utility model provides a flip - over background plate of a foreign fiber separator, which solves the problem of the background plate containing a "focusing paper" by combining the two, and reduces the heavy work of on - site debugging personnel. The technical solution is as follows:

[0007] A flip - able background board for an foreign fiber detector, comprising a background board body, a left wall board, and a right wall board. The left and right sides of the background board body are symmetrically arranged, and U - shaped grooves, second screw holes, third screw holes, and fourth screw holes are sequentially arranged from top to bottom on the side surface. Corresponding to the side surface of the background board body, the left wall board and the right wall board are sequentially provided with first screw holes, second through - holes, third through - holes, and fourth through - holes. When the background board body is arranged in the front, the U - shaped groove and the first screw hole are fixed by a first screw, the second screw hole and the third through - hole are fixed by a second screw, and the fourth screw hole and the fourth through - hole are fixed by a third screw. When the background board body is arranged in the back, the third screw hole and the second through - hole are fixed by a fourth screw, and the second screw hole and the third through - hole are fixed by a second screw.

[0008] The second screw hole is located in the middle of the side surface of the background board body, enabling the background board body to rotate back and forth with the second screw as the axis.

[0009] Scale lines for camera alignment are provided on the back of the background board body.

[0010] The flip - able background board can be fixed on the wall boards on both sides of the lamp holder by three kinds of screws. The first screw is at the topmost position, playing a positioning role; the second screw is in the middle, playing the role of a rotating shaft; the third screw is at the bottom, playing a fixing role.

[0011] The left wall board and the right wall board are parts of the wall boards on both sides of the lamp holder, corresponding to the parts for installing the flip - able background board.

[0012] When the background board body rotates with the second screw as the rotating shaft, the rotation angle of the background board body is 180°, making the back of the background board body face the camera.

[0013] For the flip - able background board of the foreign fiber detector, due to the existence of the first screw, the background board body can be pre - hung at a predetermined approximate position by a single debugging personnel, and then the debugging personnel go to both ends of the foreign fiber detector respectively to tighten the corresponding screws, avoiding the work that required two people to cooperate to complete when replacing the background board before. Since scale lines for camera adjustment are made on the back of the background board body, and the background board is designed with a structure that can be rotated and turned over, the front of the background board body is used as the background and the back is used for calibration, simplifying the original process of calibrating the camera and saving the debugging time of the equipment. Brief Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the flip - able background board of the foreign fiber detector placed in the front;

[0015] Figure 2 It is a schematic structural diagram of the flip - able background board of the foreign fiber detector placed in the back. Detailed Description of the Embodiment

[0016] As Figure 1 shown, the flip - up background plate of the foreign fiber separator includes a background plate body 1, a left wall panel 5, and a right wall panel 6. The left and right sides of the background plate body 1 are symmetrically arranged. From top to bottom, the left and right sides are sequentially provided with U - shaped grooves, second screw holes, third screw holes, and fourth screw holes. The left wall panel 5 and the right wall panel 6 are sequentially provided with first screw holes, second through - holes, third through - holes, and fourth through - holes corresponding to the sides of the background plate body from top to bottom. When the background plate body 1 is arranged in the front, the U - shaped groove and the first screw hole are fixed by a first screw 2, the second screw hole and the third through - hole are fixed by a second screw 3, and the fourth screw hole and the fourth through - hole are fixed by a third screw 4; when the background plate body 1 is arranged in the back, the third screw hole and the second through - hole are fixed by a fourth screw 7, and the second screw hole and the third through - hole are fixed by a second screw 3.

[0017] Further, the second screw hole is located in the middle of the side of the background plate body 1, enabling the background plate body 1 to be flipped back and forth with the second screw 3 as the axis. Further, a scale line for camera alignment is provided on the back of the background plate body 1.

[0018] When the background plate body 1 is in the front, both its left and right sides are provided with U - shaped grooves, second screw holes, third screw holes, and fourth screw holes. The flip - up background plate can be fixed on the wall panels on both sides of the lamp holder by three kinds of screws. Among them, the first screw 2 is at the topmost position, playing a positioning role; the second screw 3 is in the middle, playing the role of a rotating shaft; the third screw 4 is at the bottom, playing a fixing role. The left wall panel 5 and the right wall panel 6 are part of the wall panels on both sides of the lamp holder, not all of them, only the part for installing the flip - up background plate 1 is shown.

[0019] The operation sequence in the actual use process is as follows: When the foreign fiber separator equipment arrives and the background plate is installed, first, on the left wall panel 5 and the right wall panel 6, screw the first screw 2 into the first screw hole, and the screw head of the first screw 2 protrudes out of the wall panels on both sides. Then, face the front of the background plate body 1 towards the camera, and the curved "U" - shaped grooves provided on both sides are hung on the screw heads of the first screw 2 protruding out of the wall panels. Subsequently, pass the second screw 3 through the third through - hole in the middle of the left wall panel 5 and the right wall panel 6, and screw it into the corresponding second screw hole on the background plate body 1. Finally, pass the third screw 4 through the fourth through - holes on the left wall panel 5 and the right wall panel 6, and screw it into the corresponding fourth screw hole on the background plate body 1. The installation of the front of the background plate body 1 is completed.

[0020] When it is necessary to calibrate and focus the camera, unscrew the first screw 2 and the third screw 4, and loosen the second screw 3. In this way, the background plate body 1 rotates with the second screw 3 as the rotating shaft, rotates the background plate body 1 by 180°, and makes the back of the background plate body 1 face the camera, as Figure 2As shown in the figure. Pass the fourth screw 7 through the second through-holes on the left wallboard 5 and the right wallboard 6, and screw it into the corresponding third screw hole on the background board body 1. Then tighten the second screw 3 to fix the second screw hole and the third through-hole, and the reverse installation and fixation of the background board body 1 can be completed. There are scale lines specifically made for camera focusing on the reverse side of the background board body 1. Align the camera with the corresponding scale lines to finely adjust the focal length and position of the camera, so as to achieve the purpose of adjusting the camera focus alignment.

[0021] After the camera adjustment is completed, unscrew the fourth screw 7 and loosen the second screw 3. Rotate the background board body 1 to align the front side of the background board body 1 with the camera. Then pass the third screw 4 through the third through-holes on the left wallboard 5 and the right wallboard 6, and screw it into the corresponding second screw hole on the background board body 1. Then tighten the second screw 3 to complete the front installation and fixation of the background board body 1. The adjustment of installing the camera on the reversible background board is all completed.

[0022] It can be seen that when installing the front side, three holes (and three screws) are used: the screw hole at the top of the wallboard and the third and fourth through-holes; the hook on the background board, and the second and fourth screw holes; when installing the reverse side, two holes (and two screws) are used: the second and third through-holes on the wallboard; the third and second screw holes on the background board. At this time, the background board is upside down, and the order from top to bottom is from the fourth to the first. In fact, the screw of the hook is only used to hang the background board; the middle third through-hole and the second screw hole correspond to each other for the rotation of the background board; the remaining corresponding hole is used for fixation. The fourth through-hole and the fourth screw hole are used for the front installation, and the second through-hole and the third screw hole are used for the reverse installation.

[0023] For the reversible background board of the foreign fiber separator, due to the existence of the first screw, the background board body can be pre-hung at a predetermined general position by a debug operator, and then the debug operator goes to both ends of the foreign fiber separator to tighten the corresponding screws respectively, avoiding the work that required two people to cooperate to complete when replacing the background board before. Since there are scale lines for camera adjustment on the reverse side of the background board body, and the background board is designed to be rotatable and flipable, the front side of the background board body is used as the background and the reverse side is used for calibration, which simplifies the original process of calibrating the camera and saves the debugging time of the equipment.

Claims

1. A reversible background plate for a foreign matter fiber machine, characterized by: It includes a background panel body, a left wall panel, and a right wall panel. The left and right sides of the background panel body are symmetrically arranged, and a U-shaped groove, a second screw hole, a third screw hole and a fourth screw hole are arranged on the side from top to bottom. The left wall panel and the right wall panel are respectively provided with a first screw hole, a second through hole, a third through hole and a fourth through hole on the side corresponding to the background panel body. When the background panel body is arranged on the front side, the U-shaped groove and the first screw hole are fixed by a first screw, the second screw hole and the third through hole are fixed by a second screw, and the fourth screw hole and the fourth through hole are fixed by a third screw; when the background panel body is arranged on the back side, the third screw hole and the second through hole are fixed by a fourth screw, and the second screw hole and the third through hole are fixed by a second screw.

2. The reversible background plate of the foreign matter fiber machine according to claim 1, characterized in that: The second screw hole is located in the middle of the side surface of the background plate body, so that the background plate body can be flipped forward and backward with the second screw as the axis.

3. The reversible background plate of the foreign matter fiber machine according to claim 1, characterized in that: The back of the background plate body is provided with scale lines for camera alignment.

4. The reversible background plate of the foreign matter fiber machine according to claim 1, characterized in that: The flippable background plate can be fixed to the wall panels on both sides of the lamp stand by three screws, wherein the first screw is at the top and plays a positioning role; the second screw is in the middle and plays a rotating shaft role; and the third screw at the bottom plays a fixing role.

5. The reversible background plate of the foreign matter fiber machine according to claim 1, characterized in that: The left wall panel and the right wall panel are part of the wall panels on both sides of the lamp stand, corresponding to the parts where the flippable background panel is installed.

6. The reversible background plate of the foreign matter fiber machine according to claim 1, characterized in that: When the background plate body rotates with the second screw as the rotation axis, the background plate body rotates by an angle of 180°, so that the back side of the background plate body faces the camera.

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