Mechanical early warning feedback equipment for material rack leveling feeder

Abstract

The invention discloses mechanical early warning feedback equipment for a material rack leveling feeder, and relates to the technical field of signal transmission, the mechanical early warning feedback equipment comprises an uncoiler, the bottom of the uncoiler is fixedly connected with a primary leveling machine, the bottom of the primary leveling machine is fixedly connected with a pair of transfer bridges, and the flatness of the primary leveling machine is visually fed back through the arrangement of a flatness visual feedback mechanism. According to the invention, the roller is driven to be attached to the surface of the plate, then in the continuous feeding process of the plate, once the plate is in contact with the uneven part, the rotating plates are driven to swing back and forth, the ringing ball is shaken to give out a ring, the transverse surface range of the plate can be covered through the arrangement of the multiple rotating plates, and for the local small uneven part, the rotating plates are not prone to falling off. The ringing ball can be triggered independently, so that the detection accuracy is improved, and a worker can master the flatness of the plate more accurately according to the size and frequency of the heard ringtone and the feedback of the overlapping times of the ringtone, so that the working effect of the working roller is known, and the worker can debug the equipment conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of signal transmission, and particularly to a mechanical warning feedback device for a rack leveling and feeding machine. Background Art

[0002] A rack leveling and feeding machine is generally used for leveling metal plates, plastic plates, etc. Among them, in the field of metal processing, it can be used for leveling and feeding metal plates, providing high-quality raw materials for subsequent processes such as stamping and shearing; In the prior art, for the flatness detection of metal plates, generally, after detection, it is necessary to observe the change of system data and analyze to obtain the result. Therefore, the use of the equipment system requires certain professional knowledge, and front-line workers are difficult to intuitively and accurately judge the flatness of the plates, which is not conducive to the improvement of their work efficiency; In addition, during the initial feeding process, the equipment is prone to jamming. The current warning feedback mechanism of the leveling and feeding machine usually highly depends on the accuracy and reliability of the sensor. If the sensor fails or has an error, it may cause the warning feedback mechanism to fail or give a false alarm. Therefore, it increases the difficulty of troubleshooting and judging the position of the plate for maintenance personnel.

[0003] In view of this, the present invention proposes a mechanical warning feedback device for a rack leveling and feeding machine to make up for and improve the deficiencies of the prior art. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a mechanical warning feedback device for a rack leveling and feeding machine that can more accurately master the flatness of the plate; can improve work efficiency and product quality; and can improve maintenance efficiency and reduce the difficulty of troubleshooting, so as to solve the corresponding technical problems raised in the above background art.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a mechanical warning feedback device for a rack leveling and feeding machine, including an uncoiler, the bottom of the uncoiler is fixedly connected with a primary leveling machine, the bottom of the primary leveling machine is fixedly connected with a bridge, there are a pair of bridges, and one side of the pair of bridges away from the primary leveling machine is fixedly connected with a precision leveling and feeding machine body, one side of the precision leveling and feeding machine body away from the bridge is fixedly connected with a punching press, and one side of the punching press away from the precision leveling and feeding machine body is fixedly connected with a shearing machine. The device further includes: A flatness intuitive feedback mechanism for grading and feedbacking the flatness state of the metal plate; A fault feedback mechanism for prompting the position of the plate to assist maintenance after a fault occurs.

[0006] Preferably, the flatness intuitive feedback mechanism includes a sound insulation cover fixedly connected to the inner surface of the top of the precision leveling and feeding machine body. An sound outlet is formed in the outer wall of the top of the precision leveling and feeding machine body, and the sound outlet is communicated with the inside of the sound insulation cover. The bottom of the sound insulation cover is fixedly connected with a first guide plate, the bottom of the first guide plate is fixedly connected with a mounting seat, one side of the first guide plate away from the working roller is fixedly communicated with the precision leveling and feeding machine body, a detection hole groove is fixedly formed in the top of the first guide plate, and a first telescopic plate is slidably connected to the middle of the first guide plate.

[0007] Preferably, the flatness intuitive feedback mechanism further includes an inverted U-shaped frame fixedly connected to the top of the first telescopic plate. The outer walls on both sides of the inverted U-shaped frame are slidably connected to the first guide plate. A plurality of rotating plates are rotatably connected to the top of the inverted U-shaped frame. A ringing ball is fixedly connected to the top of each of the plurality of rotating plates. A roller is rotatably connected to the bottom of each rotating plate, and the bottoms of the plurality of rollers extend into the detection hole groove.

[0008] Preferably, the flatness intuitive feedback mechanism further includes a bottom plate fixedly connected to the top of the inverted U-shaped frame. A plurality of first springs are fixedly connected to the top of the bottom plate. An arc plate is fixedly connected to the side of the plurality of first springs away from the bottom plate, and the arc plate is within the movement track range of the ringing ball.

[0009] Preferably, the fault feedback mechanism includes a second guide plate fixedly communicated with the middle of the precision leveling and feeding machine body. The second guide plate is located at a position on the precision leveling and feeding machine body that is symmetrical to the first guide plate. The bottom of the second guide plate is fixedly connected to the top of the mounting seat. A second telescopic plate is slidably connected to the middle of the second guide plate. The bottom of the second telescopic plate is slidably connected to the inner wall of the top of the mounting seat. Wings are respectively fixedly connected to the tops of the first guide plate and the second telescopic plate. The outer walls of the two pairs of wings are slidably connected to the inner wall of the mounting seat. A plurality of second springs are fixedly connected to the bottom of each wing, and the sides of the plurality of second springs away from the wings are fixedly connected to the inner wall of the mounting seat.

[0010] Preferably, the fault feedback mechanism further includes long rods respectively fixedly connected to the bottoms of the first guide plate and the second telescopic plate. The outer walls of the two long rods are slidably connected to the inner wall of the bottom of the mounting seat. Fixed rods are rotatably connected to the edges of the long rods. An indicating column is fixedly connected to the side of each of the two fixed rods away from the long rod. A pair of observation ports are formed in the outer wall of the bottom of the precision leveling and feeding machine body.

[0011] Preferably, both of the pair of observation ports are rectangular and located in the middle of the indicating column.

[0012] Preferably, red and green color marks are coated on the outer walls of the sides of the indicating columns away from the long rods.

[0013] Preferably, the ringing ball, the arc plate and the bottom plate are all made of metal.

[0014] Preferably, the rotating plates are all in a natural inclined state.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. During the process of the plate extruding the first telescopic plate to press it down, through the setting of the flatness intuitive feedback mechanism, the roller can be driven to fit on the surface of the plate. Then, during the continuous feeding of the plate, once it touches an uneven part, the rotating plate will be driven to swing reciprocally, shaking the ringing ball to emit a bell sound. And the setting of multiple rotating plates enables the entire transverse surface range of the plate to be covered. For local small uneven parts, the ringing ball can be triggered individually, thereby improving the detection accuracy. According to the size, frequency, and overlapping times of the bell sound heard by the staff, the staff can more accurately grasp the flatness of the plate, and thus understand the working effect of the working roller, which is convenient for the staff to debug the equipment. 2. Through the setting of the arc plate, when the surface of the plate has large undulations, the large swing of the rotating plate will drive the ringing ball to hit the arc plate, effectively expanding the sound and increasing the level and distinctiveness of the bell sound, further improving the feedback effect, enabling the staff to more accurately judge the flatness of the plate, and thus improving the work efficiency and product quality. 3. When initially feeding the material, through the setting of the fault feedback mechanism, observation ports are respectively provided at the inlet and outlet of the precision leveling feeding body. When the plate reaches the second guide plate or the first guide plate, the second telescopic plate and the first telescopic plate are respectively pressed down, driving the indicating column to rotate, changing the position of the color on its surface. Finally, the red and green icons displayed at the observation port change with the position change of the plate. When a material jamming situation occurs during equipment failure, the maintenance staff can narrow down the position range of the plate according to the color feedback of the observation port, improve the maintenance efficiency, reduce the installation of sensors, and reduce the difficulty of troubleshooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment shown in the present invention; Figure 2 It is a front three-dimensional structure schematic diagram shown in the present invention; Figure 3 It is a partial cross-sectional view of the leveling feeding body shown in the present invention; Figure 4 It is a schematic diagram of the structure at the connection of the long rod shown in the present invention; Figure 5 It is a schematic diagram of the structure at the connection of the indicating column shown in the present invention; Figure 6Schematic diagram of the structure at the connection of the rotating plate shown in the present invention; Figure 7 Schematic diagram of the structure at the connection of the roller shown in the present invention; Figure 8 Schematic diagram of the structure at the connection of the inverted U-shaped frame shown in the present invention; Figure 9 Schematic diagram of the structure at the connection of the arc plate shown in the present invention; Figure 10 Schematic diagram of the structure at the connection of the first spring shown in the present invention.

[0017] The reference numerals in the figure are: 1. Uncoiler; 2. Primary leveling machine; 3. Cross bridge; 4. Punch press; 5. Shearing machine; 6. Precision leveling and feeding body; 7. Working roller; 8. Flatness intuitive feedback mechanism; 81. Sound insulation cover; 82. Sound outlet; 83. Inverted U-shaped frame; 84. First telescopic plate; 85. Mounting seat; 86. Rotating plate; 87. Ringing ball; 88. First guide plate; 89. Roller; 810. Base plate; 811. Arc plate; 812. First spring; 9. Fault feedback mechanism; 91. Indicator post; 92. Second telescopic plate; 93. Second spring; 94. Fixed rod; 95. Observation port; 96. Wing plate; 97. Second guide plate; 98. Long rod. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiments of the present invention: Please refer to Figures 1 to 10 As shown, a mechanical warning and feedback device for a rack leveling and feeding machine includes an uncoiler 1. A primary leveling machine 2 is fixedly connected to the bottom of the uncoiler 1. A cross bridge 3 is fixedly connected to the bottom of the primary leveling machine 2. A pair of cross bridges 3 are provided. One side of the pair of cross bridges 3 away from the primary leveling machine 2 is fixedly connected to a precision leveling and feeding body 6. One side of the precision leveling and feeding body 6 away from the cross bridge 3 is fixedly connected to a punch press 4. One side of the punch press 4 away from the precision leveling and feeding body 6 is fixedly connected to a shearing machine 5. It further includes: A flatness intuitive feedback mechanism 8 for hierarchically feedbacking the flatness state of the metal sheet; A fault feedback mechanism 9 for prompting the position of the sheet after a fault occurs to assist in maintenance; The flatness intuitive feedback mechanism 8 includes a sound insulation cover 81 fixedly connected to the inner surface of the top of the precision leveling and feeding machine body 6. An sound outlet 82 is provided on the outer wall of the top of the precision leveling and feeding machine body 6, and the sound outlet 82 is communicated with the inside of the sound insulation cover 81. The bottom of the sound insulation cover 81 is fixedly connected with a first guide plate 88. The bottom of the first guide plate 88 is fixedly connected with a mounting seat 85. One side of the first guide plate 88 away from the working roller 7 is fixedly communicated with the precision leveling and feeding machine body 6. A detection hole groove is fixedly opened at the top of the first guide plate 88. A first telescopic plate 84 is slidably connected to the middle of the first guide plate 88; The flatness intuitive feedback mechanism 8 further includes an inverted U-shaped frame 83 fixedly connected to the top of the first telescopic plate 84. The outer walls on both sides of the inverted U-shaped frame 83 are slidably connected to the first guide plate 88. A plurality of rotating plates 86 are rotatably connected to the top of the inverted U-shaped frame 83. A ringing ball 87 is fixedly connected to the top of each of the plurality of rotating plates 86. A roller 89 is rotatably connected to the bottom of each rotating plate 86. The bottoms of the plurality of rollers 89 all extend into the detection hole groove; The flatness intuitive feedback mechanism 8 further includes a bottom plate 810 fixedly connected to the top of the inverted U-shaped frame 83. A plurality of first springs 812 are fixedly connected to the top of the bottom plate 810. A circular arc plate 811 is fixedly connected to the side of the plurality of first springs 812 away from the bottom plate 810. The circular arc plate 811 is located within the movement track range of the ringing ball 87; The ringing ball 87, the circular arc plate 811 and the bottom plate 810 are all made of metal; The rotating plates 86 are all in a natural inclined state; Among them: the ringing ball 87 and the circular arc plate 811 are set to two levels of ringtones for differential judgment.

[0020] The effects achieved by this embodiment are as follows: In the prior art, for the flatness detection of metal plates, generally, after detection, it is necessary to observe the change of system data and analyze to obtain the result. Therefore, certain professional knowledge is required for the use of the equipment system, and front-line workers are difficult to intuitively and accurately judge the flatness of the plates, which is not conducive to the improvement of their work efficiency. Compared with the prior art, through the implementation of this embodiment, the flatness intuitive feedback mechanism 8 can drive the roller 89 to fit on the surface of the plate. Then, during the continuous feeding of the plate, once an uneven part is touched, it drives the rotating plate 86 to swing reciprocally, shaking the ringing ball 87 to emit a ringtone. And the setting of a plurality of rotating plates 86 enables the entire transverse surface range of the plate to be covered, and for local small uneven parts, the ringing ball 87 can be triggered individually, thereby improving the accuracy of detection.

[0021] Further embodiment: Please refer to Figures 3 to 6As shown in the figure, the fault feedback mechanism 9 includes a second guide plate 97 fixedly connected to the middle of the precision leveling and feeding body 6. The second guide plate 97 is located at a position on the precision leveling and feeding body 6 that is symmetrical to the first guide plate 88. The bottom of the second guide plate 97 is fixedly connected to the top of the mounting seat 85. A second telescopic plate 92 is slidably connected to the middle of the second guide plate 97. The bottom of the second telescopic plate 92 is slidably connected to the inner wall of the top of the mounting seat 85. A pair of wing plates 96 are respectively fixedly connected to the tops of the first guide plate 88 and the second telescopic plate 92. The outer walls of the two pairs of wing plates 96 are slidably connected to the inner wall of the mounting seat 85. A plurality of second springs 93 are fixedly connected to the bottoms of the wing plates 96. The sides of the plurality of second springs 93 away from the wing plates 96 are all fixedly connected to the inner wall of the mounting seat 85; The fault feedback mechanism 9 further includes long rods 98 respectively fixedly connected to the bottoms of the first guide plate 88 and the second telescopic plate 92. The outer walls of the two long rods 98 are slidably connected to the inner wall of the bottom of the mounting seat 85. Fixing rods 94 are rotatably connected to the edges of the long rods 98. On the sides of the two fixing rods 94 away from the long rods 98, indicating columns 91 are fixedly connected. A pair of observation ports 95 are opened on the outer wall of the bottom of the precision leveling and feeding body 6; Both of the pair of observation ports 95 are rectangular and located in the middle of the indicating columns 91; Red and green color marks are painted on the outer walls of the indicating columns 91 on the sides away from the long rods 98; Among them: The tops of the second telescopic plate 92 and the first telescopic plate 84 are both inclined relative to the precision leveling and feeding body 6, which is convenient for being extruded by the plate.

[0022] The effects achieved by this embodiment are as follows: In the prior art, it usually highly depends on the accuracy and reliability of sensors. If the sensors fail or have errors, it may cause the warning feedback mechanism to fail or give false alarms. Therefore, it increases the difficulty of fault troubleshooting and plate position judgment for maintenance personnel. Compared with the prior art, by implementing this embodiment, the fault feedback mechanism 9 can press down the second telescopic plate 92 and the first telescopic plate 84 respectively when the plate reaches the second guide plate 97 or the first guide plate 88, drive the indicating column 91 to rotate, change the position of the color on its surface, and finally make the red and green icons displayed at the observation ports 95 change with the change of the plate position, thereby narrowing the position range of the plate and improving the maintenance efficiency.

[0023] The complete usage steps and working principle of the above embodiment are as follows: In the initial state in the figure: The first telescopic plate 84 is in the extended state. The second spring 93 at the first telescopic plate 84 is in the natural and relaxed state. The second telescopic plate 92 is in the retracted state and the top of the second telescopic plate 92 abuts against the plate. The second spring 93 at the second telescopic plate 92 is in the compressed state. The rotation directions of the two indicating columns 91 are inconsistent.

[0024] During use, through the cooperation of the decoiler 1, the primary leveling machine 2 and the bridge 3, when the metal sheet reaches the inside of the precision leveling and feeding body 6, it needs to be leveled by the working rollers 7, and then reaches the punching machine 4 and the shearing machine 5, and finally is cut into sheets of different specifications for processing. When the sheet reaches the working rollers 7, since the tops of the second telescopic plate 92 and the first telescopic plate 84 are both inclined relative to the precision leveling and feeding body 6, under the limitation of the second guide plate 97, the second telescopic plate 92 can be easily pressed down to the bottom, and then the lower long rod 98 is also pressed down to the bottom, thereby driving the indicating column 91 to rotate until the green mark corresponds to the observation port 95. The staff can know that the sheet has passed through the position of the second guide plate 97 by checking the observation port 95 outside. Similarly, when the sheet reaches the first guide plate 88, the first telescopic plate 84 can also be pressed down, and finally the red mark displayed at the observation port 95 is rotated to green, indicating that the head of the sheet has passed through the working rollers 7 and reached the first guide plate 88. Thus, during the initial feeding process, if a malfunction occurs in the equipment and causes a material jamming situation, the maintenance personnel can narrow down the position range of the sheet according to the color feedback of the observation port 95, improving the maintenance efficiency; Please refer to the above working process Figures 3 to 6 。

[0025] Furthermore, when the sheet reaches the first guide plate 88, the first telescopic plate 84 is squeezed to press it downward, and the inverted U-shaped frame 83 can be synchronously driven to move downward, so that the rotating plate 86 moves as a whole, and the roller 89 located at the bottom of the rotating plate 86 is in contact with the surface of the sheet, and the rotating plate 86 rotates slightly from time to time. Then, in the process of continuous feeding of the sheet, after the sheet is leveled by the working roller 7 and enters the first guide plate 88, the surface of the sheet first contacts the roller 89. If the surface of the sheet is smooth, the roller 89 is driven to rotate to offset the friction. If the surface of the sheet is uneven, the roller 89 will fluctuate up and down, and then drive the rotating plate 86 to swing back and forth. The ringing ball 87 located on the top of the rotating plate 86 will make a ringing sound due to the shaking. The sound is gathered through the sound insulation cover 81 and finally released from the sound outlet 82, so that the external staff can hear the ringing sound directly. The setting of multiple rotating plates 86 makes The surface range of the plate can be covered, and the ringing ball 87 can be triggered separately for the local small uneven parts, so as to improve the accuracy of the detection. The staff can more accurately grasp the flatness of the plate according to the feedback of the size and frequency of the ringing sound heard, as well as the number of overlapping times of the ringing sound, so as to understand the working effect of the working roller 7, which is convenient for the staff to debug the equipment. At the same time, for the case where the surface of the plate is more uneven, the swing amplitude of the rotating plate 86 will also increase, so it will drive the ringing ball 87 to hit the arc plate 811. Since the bottom of the arc plate 811 is supported by the first spring 812, and the arc plate 811 and the bottom plate 810 are set to metal materials, the ringing ball 87 can drive the arc plate 811 to hit the bottom plate 810 after hitting the arc plate 811, so as to effectively amplify the sound, make the ringing sound layered, and can be graded, effectively feedback to the staff, judge the flatness of the plate, and improve work efficiency and product quality. Please refer to the above working process Figures 1 to 3 , Figures 7 to 10 .

[0026] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mechanical early warning feedback device for a material rack leveling feeder, comprising an unwinder (1), characterized in that: The bottom of the uncoiler (1) is fixedly connected to a primary leveler (2), the bottom of the primary leveler (2) is fixedly connected to a bridge (3), a pair of bridges (3) are provided, one side of the pair of bridges (3) away from the primary leveler (2) is fixedly connected to a finishing flat feeder body (6), one side of the finishing flat feeder body (6) away from the bridge (3) is fixedly connected to a punch (4), and one side of the punch (4) away from the finishing flat feeder body (6) is fixedly connected to a shearing machine (5), and further comprises: A flatness intuitive feedback mechanism (8) for providing graded feedback on the flatness state of the metal sheet; The fault feedback mechanism (9) is used to indicate the position of the plate after a fault occurs to assist in maintenance.

2. According to claim 1, a mechanical early warning feedback device for a material rack leveling feeder is characterized in that: The flatness visual feedback mechanism (8) comprises a soundproof cover (81) fixedly connected to the inner surface of the top of the finishing flat feeding machine body (6); a sound outlet (82) is provided on the outer wall of the top of the finishing flat feeding machine body (6); the sound outlet (82) is connected to the inside of the soundproof cover (81); a first material guide plate (88) is fixedly connected to the bottom of the soundproof cover (81); a mounting seat (85) is fixedly connected to the bottom of the first material guide plate (88); a side of the first material guide plate (88) away from the working roller (7) is fixedly connected to the finishing flat feeding machine body (6); a detection hole groove is fixedly provided on the top of the first material guide plate (88); and a first telescopic plate (84) is slidably connected to the middle of the first material guide plate (88).

3. The mechanical early warning feedback device for a material rack leveling feeder according to claim 2 is characterized in that: The flatness intuitive feedback mechanism (8) also includes an inverted U-shaped frame (83) fixedly connected to the top of the first telescopic plate (84), and the outer walls on both sides of the inverted U-shaped frame (83) are slidably connected to the first guide plate (88). The top of the inverted U-shaped frame (83) is rotatably connected to multiple rotating plates (86), and the tops of the multiple rotating plates (86) are fixedly connected to bell balls (87), and the bottoms of the rotating plates (86) are rotatably connected to rollers (89), and the bottoms of the multiple rollers (89) extend into the detection hole groove.

4. The mechanical early warning feedback device for a material rack leveling feeder according to claim 3 is characterized in that: The flatness intuitive feedback mechanism (8) also includes a bottom plate (810) fixedly connected to the top of the inverted U-shaped frame (83), a plurality of first springs (812) are fixedly connected to the top of the bottom plate (810), and a circular arc plate (811) is fixedly connected to the side of the plurality of first springs (812) away from the bottom plate (810), and the circular arc plate (811) is located within the movement trajectory of the ringing ball (87).

5. The mechanical early warning feedback device for a material rack leveling feeder according to claim 2 is characterized in that: The fault feedback mechanism (9) comprises a second material guide plate (97) fixedly connected to the middle part of the finishing flat feeder body (6), the second material guide plate (97) being located on the finishing flat feeder body (6) at a position symmetrical to the first material guide plate (88), the bottom of the second material guide plate (97) being fixedly connected to the top of the mounting seat (85), the middle part of the second material guide plate (97) being slidably connected to a second telescopic plate (92), the bottom of the second telescopic plate (92) being slidably connected to the inner wall of the top of the mounting seat (85), the tops of the first material guide plate (88) and the second telescopic plate (92) being respectively fixedly connected to a pair of wing plates (96), the outer walls of the two pairs of wing plates (96) being slidably connected to the inner wall of the mounting seat (85), the bottoms of the wing plates (96) being fixedly connected to a plurality of second springs (93), the sides of the plurality of second springs (93) away from the wing plates (96) being fixedly connected to the inner wall of the mounting seat (85).

6. The mechanical early warning feedback device for a material rack leveling feeder according to claim 5, characterized in that: The fault feedback mechanism (9) further comprises a long rod (98) respectively fixedly connected to the bottom of the first guide plate (88) and the second telescopic plate (92); the outer walls of the two long rods (98) are slidably connected to the inner wall of the bottom of the mounting seat (85); the edges of the long rods (98) are rotatably connected to fixed rods (94); the sides of the two fixed rods (94) away from the long rods (98) are fixedly connected to indicator columns (91); and a pair of observation ports (95) are provided on the outer wall of the bottom of the finishing flat feeding machine body (6).

7. The mechanical early warning feedback device for a material rack leveling feeder according to claim 6, characterized in that: The pair of observation ports (95) are both rectangular and located in the middle of the indicator column (91).

8. The mechanical early warning feedback device for a material rack leveling feeder according to claim 6, characterized in that: The outer wall of the indicator column (91) on one side away from the long rod (98) is painted with red and green color markings.

9. The mechanical early warning feedback device for a material rack leveling feeder according to claim 4, characterized in that: The bell ball (87), the arc plate (811) and the bottom plate (810) are all made of metal.

10. The mechanical early warning feedback device for a material rack leveling feeder according to claim 3, characterized in that: The rotating plates (86) are all in a naturally inclined state.

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