CN114261747A - Automatic feeding device for air quality sensor element - Google Patents

Abstract

The invention relates to an automatic feeding device, in particular to an automatic feeding device for an air quality sensor element, wherein the interior of the automatic feeding device is divided into a feeding area and an empty tray placing area by a partition plate, and the automatic feeding device further comprises a grabbing mechanism arranged at the top of the partition plate; the feeding area is internally provided with a carrying supporting plate, a feeding track and a lifting assembly, the feeding track is horizontally arranged, the carrying supporting plate can be horizontally arranged on the feeding track in a moving mode along the feeding track, and the lifting assembly is vertically arranged at the tail end of the feeding track; the lifting assembly comprises a feeding supporting plate and a feeding rail, and the feeding supporting plate can vertically move along the feeding rail and is arranged on the feeding rail; the empty tray placing area and the feeding area are of a symmetrical structure. Compared with the prior art, the automatic feeding device realizes high-precision and automatic feeding of the air quality sensor element, and further can improve the production efficiency of the air quality sensor.

Description

Automatic feeding device for air quality sensor element

Technical Field

The invention relates to an automatic feeding device, in particular to an automatic feeding device for an air quality sensor element.

Background

Industrial automation is a general term for information processing and process control of machine equipment or production processes to achieve measurement, manipulation, etc. according to desired objectives without direct manual intervention. The automation technology relates to a comprehensive technology in the technical fields of machinery, microelectronics, computers, machine vision and the like. The industrial revolution is a midwife of the automation technology, and just because of the needs of the industrial revolution, the automation technology breaks through the eggshell, the explosion development is achieved, and meanwhile, the automation technology also promotes the industrial progress, so that the automation technology is widely applied to the fields of machine manufacturing, electric power, building, transportation, information technology and the like nowadays, and becomes a main means for improving the labor productivity. Whether high-speed high-volume manufacturing enterprises or enterprises seeking flexibility, flexibility and customization, applications relying on automation technology are required.

The automatic workbench is often used in the processing production of the air quality sensor, a plurality of material carrying plates for carrying elements to be mounted or processed are arranged on the automatic workbench, and the elements to be mounted or processed are mounted and processed through the cooperation of the material carrying plates and various tools, so that the automatic workbench is core equipment in the processing process of modern parts. Although good automatic production can be realized by installation and processing, semi-automatic or pure manual operation is mostly adopted in the feeding process or the feeding process in the common production process, and compared with the automatic process, the operation efficiency is low and the precision is poor, so that the subsequent automatic processing process is easy to cause problems, and further the production efficiency and the product quality are influenced.

Disclosure of Invention

The invention aims to solve at least one of the problems, and provides an automatic feeding device for an air quality sensor element, which realizes automatic feeding of the air quality sensor element and can improve the production efficiency of the air quality sensor.

The purpose of the invention is realized by the following technical scheme:

an automatic feeding device for an air quality sensor element is characterized in that the interior of the automatic feeding device is divided into a feeding area and an empty tray placing area through a partition plate, and the automatic feeding device further comprises a grabbing mechanism arranged at the top of the partition plate;

the feeding area is internally provided with a carrying supporting plate, a feeding track and a lifting assembly, the feeding track is arranged in the horizontal direction, the carrying supporting plate can be arranged on the feeding track in a manner of moving in the horizontal direction along the feeding track, and the lifting assembly is vertically arranged at the tail end of the feeding track; the lifting assembly comprises a feeding supporting plate and a feeding rail, and the feeding supporting plate can vertically move along the feeding rail and is arranged on the feeding rail;

the empty tray placing area and the feeding area are of a symmetrical structure.

The carrying supporting plate is used for placing a carrying plate, and the carrying plate is provided with a plurality of openings for placing elements to be loaded.

Preferably, the carrying supporting plate is square, the feeding supporting plate is U-shaped, the length of the feeding supporting plate is greater than or equal to that of the carrying supporting plate, and the opening distance is greater than the width of the carrying supporting plate. The design can be just positioned in the U-shaped opening when the material carrying plate is conveyed to the tail end of the material conveying track by the material carrying supporting plate, and the protruding part of the material feeding supporting plate can be positioned below the material carrying plate. At the moment, the loading supporting plate can drive the loading plate to move together when moving vertically upwards, and the loading plate is stably conveyed to a specified height. Because the length of the loading supporting plate is greater than or equal to that of the loading supporting plate, the U-shaped protruding part of the loading supporting plate can stably support the loading plate without side turning.

Preferably, the height of the loading pallet at the lowest point is flush with or slightly lower than the height of the loading pallet.

Preferably, a slope is arranged at the position 2-3cm away from the front end of the loading support plate, and the inclination angle of the slope is 15-30 degrees.

The design of the lowest height of the loading supporting plate and the design of the slope can ensure that the loading supporting plate can not cause the loading plate arranged on the loading supporting plate to be impacted by the loading supporting plate and deviate or even turn on the side when moving, and can ensure that the loading plate is smoothly conveyed to the loading supporting plate by the loading supporting plate and transferred to the loading supporting plate.

Preferably, the lifting assembly further comprises a limiting frame, and the limiting frame is arranged at the top of the feeding rail. The limiting frame can prevent the material carrying plate from shifting in the feeding process (namely, when the grabbing mechanism feeds the elements placed on the material carrying plate to the next working section), can ensure that the grabbing mechanism can well position the elements on the material carrying plate, and can avoid the possibility of side turning during feeding.

Preferably, the front side and the rear side of the carrying pallet in the moving direction are respectively provided with a plurality of limiters. The stopper further prevents that the year flitch from taking place for carrying the motion of year thing layer board in the moving direction to can not influence the vertical motion of material loading layer board.

Preferably, the carrying supporting plate is provided with 4 limiters, and the front and the rear are respectively arranged symmetrically by 2.

Preferably, the two ends of the carrying supporting plate in the advancing direction are provided with grooves, the corresponding positions of the head end and the tail end of the feeding track are provided with stop blocks, and the stop blocks and the grooves are matched to prevent the carrying supporting plate from moving excessively and turning over.

Preferably, the carrying supporting plate is further provided with an opening which can be matched with the bulge on the carrying plate, so that the horizontal movement of the carrying plate when the carrying plate is placed on the carrying supporting plate is further limited.

Preferably, the width of the loading area and the width of the empty tray placing area are slightly larger than that of the material carrying plate, so that the movement of the material carrying plate in the horizontal direction perpendicular to the moving direction can be limited, and the correct installation of the material carrying plate is facilitated.

Preferably, the grabbing mechanism comprises a sliding rail fixed at the top end of the partition plate, a mechanical arm arranged on the sliding rail and capable of sliding along the sliding rail, and a sucker arranged at the front end of the mechanical arm. The mechanical arm can move along the slide rail, and sequentially takes down (sucking by a sucker) all elements placed on the material carrying plate and sends the elements to the next working section, so that automatic feeding is realized; after all the elements are taken down, the mechanical arm sucks the material carrying plate through a sucking disc at the front end and rotates around the sliding rail, and the material carrying plate is placed in the empty plate placing area.

Preferably, the automatic feeding device further comprises a control system, the control system comprises a motor and a controller, the motor is connected with the carrying supporting plate and the lifting assembly through a screw respectively, and the controller is electrically connected with the motor and the grabbing mechanism. The motor drives the carrying supporting plate to move on the feeding track and the feeding supporting plate to move on the feeding track through the screw rod, and the controller controls the starting and stopping of the motor.

Preferably, the control system further comprises a position sensor, the position sensor is fixedly arranged on the partition plate and is positioned below the feeding track, and the position sensor is electrically connected with the controller. The position sensor can detect whether the loading plate is correctly installed on the loading supporting plate in the initial state.

Preferably, the position sensor is an infrared position sensor.

Preferably, the motor is a stepping motor or a servo motor.

Preferably, the control system further comprises a weight sensor, the weight sensor is fixedly arranged on the material carrying plate, and the weight sensor is electrically connected with the controller. The weight sensor can detect whether components to be loaded are still on the material carrying plate through weight.

The working principle of the invention is as follows:

in an initial state, a loading supporting plate of a loading area is positioned at the head end of a feeding track, and the loading supporting plate is positioned at the bottom end of the feeding track; the material loading supporting plate of the empty tray placing area is positioned at the top end of the material loading track, and the material loading supporting plate is positioned at the tail end of the material feeding track.

After the material carrying plate is arranged on the material carrying supporting plate, the automatic feeding device is started, and the material carrying supporting plate can move along the feeding track and drive the material carrying plate to move to the tail end of the feeding track; then the loading support plate moves upwards along the loading track, the material carrying plate is transferred onto the loading support plate from the loading support plate, and the material carrying plate is conveyed to the top end of the loading track; after the loading plate is conveyed to the top end of the feeding track, the loading supporting plate moves along the feeding track again to return to the initial state, and the grabbing mechanism starts to load the elements on the loading plate to the next working section (starting to load).

After all the elements on the material carrying plate are fed, the material carrying plate is transferred to a material feeding supporting plate of the empty tray placing area by the grabbing mechanism from the material feeding area; and then the feeding supporting plate of the feeding area moves downwards along the feeding track and returns to the initial state.

The empty disc placing area and the feeding area move oppositely, and the material carrying plate is conveyed to the head end of the feeding track through the feeding track and the feeding track in sequence so as to be convenient to take down; after the loading plate is taken down, the empty tray placing area returns to the initial state.

Compared with the prior art, the invention has the following beneficial effects:

1. the automatic feeding device can move along the horizontal direction and the vertical direction, and the material carrying plate carrying the elements to be fed is conveyed to the working position of the grabbing mechanism, so that the automatic feeding of the elements is realized. After the feeding is completed, the no-load material plate can be transferred to the empty tray placing area from the feeding area, and the automation process is further realized. After the material carrying plate leaves the corresponding track, the material carrying supporting plate or the material loading supporting plate can automatically return to the initial position to wait for the next batch of feeding, so that continuous feeding can be realized, and in addition, the material carrying plate or the material loading supporting plate can be connected with other working sections to realize automatic continuous operation on a production line, so that the production efficiency and the precision are effectively improved, and the manual operation is reduced.

2. The U-shaped loading supporting plate is matched with the square loading supporting plate, so that the loading plate can be well transported; and the multilayer settings such as the minimum height of stopper, trompil and the material loading layer board of cooperation year thing layer board, front end slope and spacing and the width in material loading district, empty dish place the district are set up, can prevent effectively that the material loading board from taking place unexpected removal at the material loading in-process, and then can prevent to carry the material board and take place the phenomenon of toppling, further can improve automatic feeding's efficiency and reduce the error rate, and then can improve production efficiency. In addition, the limiting frame can limit the position of the material carrying plate when the grabbing mechanism carries out the feeding process, the movement of the material carrying plate is avoided, and the grabbing precision is improved.

3. The feeding is carried out in a mode of a mechanical arm and a sucker, so that an element to be fed can be effectively prevented from being damaged by external force, and the production quality is ensured; meanwhile, the weight sensor is matched for use, so that the automatic feeding device can be assisted to improve the feeding efficiency, and when the weight sensor detects that the weight is greater than the dead weight of the loading plate, the mechanical arm can continuously perform feeding operation; when the weight sensor detects that the weight is equal to the dead weight of the material carrying plate, the next step can be carried out in time, so that the time consumption of useless steps is reduced, and the production efficiency is improved; and the weight sensor has accurate detection and low price and is suitable for batch use.

4. The motor is controlled through the controller, and the speed during automatic feeding can be controlled according to the specification of the element to be fed so as to meet the requirements of different elements. In addition, the overall specification of the device (such as the height of the device, the width of a feeding area and the like) can be adjusted according to the requirements of actual industrial production so as to better realize automatic feeding.

5. The automatic feeding device has reasonable integral moving line, does not intersect with each other and is easy to use; batch processing and continuous processing can be carried out according to actual requirements, higher production efficiency is provided for industrial production, the feeding area can be automatically restored to an initial state after feeding is finished, and feeding of a next batch is facilitated, and the empty tray placing area can be conveyed to a position where unloading is facilitated when no-load plates to be unloaded are to be unloaded, so that loading and unloading are facilitated; in addition, the device has simple structure and is easy to manufacture, popularize and use.

Drawings

FIG. 1 is a schematic view of an angle of the automatic loading device of the present invention;

FIG. 2 is a schematic view of another angle of the automatic feeding device of the present invention;

in the figure: 1-a feeding area; 11-a carrier pallet; 111-a stopper; 12-a feed track; 13-a lift assembly; 131-a feeding supporting plate; 132-a feeding track; 133-a limiting frame; 2-empty tray placement area; 3-a gripping mechanism; 31-a slide rail; 32-a robotic arm; 33-a suction cup; 4-a separator.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

Example 1

An automatic feeding device for an air quality sensor element is disclosed, as shown in fig. 1 and fig. 2, the interior of the automatic feeding device is divided into a feeding area 1 and an empty tray placing area 2 by a partition plate 4, and the automatic feeding device further comprises a grabbing mechanism 3 arranged at the top of the partition plate 4; a carrying supporting plate 11, a feeding track 12 and a lifting assembly 13 are arranged in the feeding area 1, the feeding track 12 is arranged in the horizontal direction, the carrying supporting plate 11 can be arranged on the feeding track 12 in a manner of moving along the horizontal direction of the feeding track 12, and the lifting assembly 13 is vertically arranged at the tail end of the feeding track 12; the lifting assembly 13 comprises a feeding support plate 131 and a feeding rail 132, and the feeding support plate 131 can be vertically moved along the feeding rail 132 and is arranged on the feeding rail 132; the empty tray placing area 2 and the feeding area 1 are of a symmetrical structure.

More specifically, in the present embodiment:

automatic feeding device's left side is for empty dish place district 2, and the right side is material loading district 1, and the middle partition of realizing through baffle 4, empty dish place district 2 and material loading district 1 inner structure use baffle 4 as the axisymmetric.

Taking the feeding area 1 as an example, a material carrying plate can be placed on the material carrying supporting plate 11 in the feeding area 1, and the material carrying plate is provided with openings for placing elements to be fed. In this embodiment, the material-carrying plate is rectangular, has 12 openings, and is uniformly arranged on the material-carrying plate in a specification of 4 × 3(4 rows and 3 columns); the carrying supporting plate 11 is also rectangular, the front side and the rear side of the carrying supporting plate 11 are respectively provided with a stopper 111, the two sides are respectively 2 and 4, at the moment, the carrying plate is arranged on the carrying supporting plate 11 and is just positioned in the middle of the stopper 111, so that the carrying plate can not move relative to the carrying supporting plate 11 in the front-back direction, and the left side and the right side of the carrying plate can extend out of the carrying supporting plate 11; furthermore, the carrying supporting plate 11 is provided with a square opening, the bottom of the carrying plate is provided with a convex block, when the carrying plate is correctly placed on the carrying supporting plate 11, the convex block is just positioned in the square opening, and the convex block and the carrying supporting plate are matched with each other, so that the relative movement of the carrying plate on the carrying supporting plate 11 can be further prevented. Carry thing layer board 11 and set up on pay-off track 12, pay-off track 12 is the setting of horizontal direction, carry thing layer board 11 and can carry out the seesaw along pay-off track 12, all set up by the dog in pay-off track 12 head end and terminal central point, correspondingly, both sides also are provided with the recess around carrying thing layer board 11, when carrying thing layer board 11 and removing to head end or terminal, the dog just is located the recess, can be with the location of supplementary thing layer board 11 of carrying, can assist the stopping of carrying thing layer board 11 again. The carrying supporting plate 11 is connected with a servo motor through a screw rod, and the servo motor drives the screw rod to move so that the carrying supporting plate 11 can move back and forth along the feeding track 12.

At the end of the feeding track 12, a lifting assembly 13 is disposed, the lifting assembly 13 is mainly composed of a feeding support plate 131 and a feeding track 132, the feeding track 132 is vertically disposed, and the feeding support plate 131 is disposed on the feeding track 132 and can move up and down along the feeding track 132. In this embodiment, the loading plate 131 is designed into a U shape, the length of the extending edge of the U shape is equivalent to the length of the loading plate 11, and the distance of the opening is slightly larger than the width of the loading plate 11, so that the feeding track 12 can extend into the U-shaped opening, and when the loading plate 11 moves to the end of the feeding track 12, the part of the loading plate placed on the loading plate 11, which extends out of the loading plate 11, can be located just above the two edges of the U shape, and when the loading plate 131 moves upwards along the loading track 132, the loading plate can be transferred from the loading plate 11 to the loading plate 131. More specifically, when the loading pallet 131 is located at the bottom end of the loading rail 132, the height of the loading pallet is slightly lower than that of the loading pallet 11, so that the loading plates placed on the loading pallet 11 can be smoothly conveyed to the two sides of the U shape without being blocked; and is provided in the form of a slope (about 15 °) at 2cm from the front end of the loading pallet 131, it is possible to further prevent the wear and even the overturn caused by the two sides of the U shape blocking the carrier plate when the carrier pallet 11 moves. The feeding support plate 131 is connected with a servo motor through a screw, and the servo motor drives the screw to move, so that the feeding support plate 131 can move up and down along the feeding track 132. The lifting assembly 13 further comprises a limiting frame 133 arranged at the top of the feeding rail 132, the size of the limiting frame 133 is slightly larger than that of the material carrying plate, so that when the material carrying plate 131 lifts the material carrying plate to the top end of the feeding rail 132, the material carrying plate can be surrounded by the limiting frame 133, and thus the material carrying plate cannot move under stress during feeding, so that the material carrying plate can be prevented from overturning, meanwhile, positioning can be provided for the feeding process (a feeding element is limited by the limiting frame and cannot move), and the feeding efficiency can be further improved.

A horizontal sliding rail 31 parallel to the feeding rail 12 is arranged at the top of the partition board 4, the mechanical arm 32 is arranged on the sliding rail 31 and can slide along the sliding rail 31, the connection part is a sliding block part (a cuboid part directly clamped on the sliding rail 31 in the figure) of the mechanical arm 32, and the arm part (the part connected to the sliding block) of the mechanical arm 32 can rotate 180 degrees around the sliding block. A sucker 33 is arranged at the front end of the mechanical arm 32, and elements can be sucked up and put down during feeding; a micro motor for controlling the translation, suction and discharge of the mechanical arm 32 is arranged in the mechanical arm. The slide rail 31, the mechanical arm 32 and the suction cup 33 jointly form a grabbing mechanism 3, when the device works, the grabbing mechanism 3 is positioned, then the suction cup 33 operates to suck a component to be loaded and send the component to a specified position; after the feeding of the feeding element is completed, the suction disc 33 sucks the loading plate, the mechanical arm 32 rotates 180 degrees around the sliding block, and the loading plate is placed in the empty tray placing area 2.

The automatic feeding device of the embodiment is further provided with a control system, which comprises the servo motor and the controller, wherein the servo motor drives the carrying supporting plate 11 and the feeding supporting plate 131 to move, and the controller is a PLC (programmable logic controller) controller and is electrically connected with the servo motor and the grabbing mechanism 3 to control the operation of the automatic feeding device; the PLC controller may also modify its built-in parameters (such as latency, speed of movement, etc.) externally. In addition, the control system includes an infrared position sensor (position sensor) mounted on the partition plate 4 below the feeding rail 12 to detect whether the carrier plate is correctly mounted on the carrier plate 11 and a weight sensor (which measures the weight of the carrier plate to determine whether the loading of the components on the carrier plate is completed) mounted on the carrier plate.

The specific structure in the empty tray placing area 2 is the same as that of the feeding area 1, and is only axisymmetric with the feeding area 1 by using the partition plate 4 as an axis, which is not described again.

The specific operation of this embodiment is as follows:

in the initial state, the loading pallet 11 in the loading area 1 is located at the head end of the feeding track 12 (i.e. the end close to the outer side for placing a loading plate), and the loading pallet 131 is located at the bottom end of the loading track 132; while the carrier plates 11 in the empty tray placement area 2 are located at the end of the feeding track 12 (i.e. the end near the inner side), while the loading plates 131 are located at the top end of the loading track 132.

After the material carrying plate where the elements to be fed are placed is installed on the material carrying supporting plate 11, the automatic feeding device is started, and after the infrared position sensor detects that the position of the material carrying plate is accurately installed, the device is started. The loading supporting plate 11 moves along the feeding track 12 under the driving of the servo motor, and drives the loading plate to move to the tail end of the feeding track 12, namely above the loading supporting plate 131; subsequently, the loading pallet 131 moves upward along the loading track 132 under the driving of the servo motor, and at the same time, the material carrying plate is transferred onto the loading pallet 131 from the loading pallet 11, the loading pallet 131 continues to move upward to send the material carrying plate to the top end of the loading track 132, at this time, the loading pallet 11 moves along the loading track 12 again under the driving of the servo motor, and returns to the initial state (returns to the head end of the loading track 12). The grabbing mechanism 3 starts to act, the mechanical arm 32 slides along the slide rail 31, the position of the suction cup 33 is adjusted to be above a first element to be loaded, the suction cup 33 sucks the element to be loaded, and the mechanical arm 32 slides to adjust the position of the suction cup 33 to be at a designated position and then is put down to complete the loading of the first element; repeating the action of the mechanical arm 32, after all the elements are loaded (the weight sensor measures that the weight is equal to the empty loading plate), the mechanical arm 32 moves the suction disc 33 to the central position of the empty loading plate, rotates 180 degrees, and places the empty loading plate on the loading support plate 131 of the empty tray placing area 2; at this time, the loading palette 131 of the loading zone 1 moves back to the original position again. The material loading supporting plate 131 of the empty tray placing area 2 moves downwards to the bottom end of the material loading rail 132 under the action of the servo motor, at the moment, the empty material loading plate can be automatically placed on the material loading supporting plate 11, the material loading supporting plate 11 sends the empty material loading plate to the head end of the material loading rail 12 along the material loading rail 12 to wait for unloading the empty material loading plate, the material loading supporting plate 131 returns to the top end of the material loading rail 132 again, after the empty material loading plate is unloaded, the material loading supporting plate 11 returns to the tail end of the material loading rail 12, and the whole empty tray placing area 2 returns to the initial state.

The working principle of the invention is as follows:

in the initial state, the loading pallet 11 in the loading area 1 is located at the head end of the feeding track 12, and the loading pallet 131 is located at the bottom end of the loading track 132; the loading pallet 131 of the empty tray placing area 2 is positioned at the top end of the loading rail 132, and the carrying pallet 11 is positioned at the tail end of the feeding rail 12.

After the loading plate is arranged on the loading support plate 11, the automatic loading device is started, and the loading support plate 11 can move along the feeding track 12 and drive the loading plate to move to the tail end of the feeding track 12; then the loading pallet 131 moves upwards along the loading track 132, and the material carrying plate is transferred from the loading pallet 11 to the loading pallet 131 and is sent to the top end of the loading track 132; after the loading plate has been fed to the top of the loading rail 132, the loading pallet 11 is moved along the feeding rail 12 again, returning to the initial state, and the gripper 3 starts to load the components on the loading plate to the next station (start loading).

After all the elements on the material carrying plate are fed, the grabbing mechanism 3 transfers the material carrying plate from the feeding area 1 to the feeding supporting plate 131 of the empty tray placing area 2; the loading pallets 131 of the loading zone 1 then move down the loading rails 132, returning to the initial state.

The empty tray placing area 2 and the feeding area 1 move oppositely, and the material carrying plate is conveyed to the head end of the feeding track 12 through the feeding track 132 and the feeding track 12 in sequence so as to be convenient to take down; after the loading plate is removed, the empty tray placement area 2 returns to the initial state.

The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims (10)

1. The automatic feeding device for the air quality sensor element is characterized in that the interior of the automatic feeding device is divided into a feeding area (1) and an empty tray placing area (2) through a partition plate (4), and the automatic feeding device further comprises a grabbing mechanism (3) arranged at the top of the partition plate (4);

a carrying supporting plate (11), a feeding track (12) and a lifting assembly (13) are arranged in the feeding area (1), the feeding track (12) is arranged in the horizontal direction, the carrying supporting plate (11) can be arranged on the feeding track (12) in a manner of moving in the horizontal direction along the feeding track (12), and the lifting assembly (13) is vertically arranged at the tail end of the feeding track (12); the lifting assembly (13) comprises a feeding support plate (131) and a feeding rail (132), wherein the feeding support plate (131) can be vertically arranged on the feeding rail (132) along the feeding rail (132) in a moving mode;

the empty tray placing area (2) and the feeding area (1) are of a symmetrical structure.

2. An automatic air quality sensor element feeding device according to claim 1, wherein the carrier plate (11) is square, the feeding plate (131) is U-shaped, the length of the feeding plate (131) is greater than or equal to the length of the carrier plate (11), and the opening distance is greater than the width of the carrier plate (11).

3. An automatic feeding device of an air quality sensor element according to claim 2, characterized in that the front end of the feeding supporting plate (131) is provided with a slope 2-3cm away, and the inclination angle of the slope is 15-30 °.

4. The automatic feeding device of an air quality sensor element as claimed in claim 1, wherein the lifting assembly (13) further comprises a limiting frame (133), and the limiting frame (133) is arranged at the top of the feeding rail (132).

5. An automatic air quality sensor element feeding device according to any one of claims 1-4, characterized in that the carrier plate (11) is provided with a number of stops (111) on each of the front and rear sides in the direction of movement.

6. An automatic feeding device of an air quality sensor element according to claim 5, characterized in that 4 stoppers (111) are arranged on the carrier plate (11), 2 of which are symmetrically arranged in front and back.

7. The automatic feeding device of the air quality sensor element according to claim 1, wherein the grabbing mechanism (3) comprises a slide rail (31) fixed at the top end of the partition plate (4), a mechanical arm (32) arranged on the slide rail (31) and capable of sliding along the slide rail (31), and a suction cup (33) arranged at the front end of the mechanical arm (32).

8. The automatic feeding device of an air quality sensor element according to claim 1, characterized in that the automatic feeding device further comprises a control system, the control system comprises a motor and a controller, the motor is respectively connected with the carrying pallet (11) and the lifting assembly (13) through a screw, and the controller is electrically connected with the motor and the grabbing mechanism (3).

9. An automatic air quality sensor element feeding device according to claim 8, characterized in that the control system further comprises a position sensor fixedly arranged on the partition (4) and located below the feeding track (12), the position sensor being electrically connected with the controller.

10. An automatic air quality sensor element feeding device according to claim 8, wherein said motor is a stepper motor or a servo motor.

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