Glove feeding opening supporting mechanism

Abstract

The utility model discloses a glove feeding and opening expanding mechanism, which belongs to the field of glove production and comprises a first conveying belt, and a glove stacking position for placing a glove stack to be opened is arranged behind the conveying direction of the first conveying belt. A material taking suction cup used for grabbing gloves on the uppermost layer of the glove pile on the glove pile stacking position to the first conveying belt is arranged above the first conveying belt, the material taking suction cup is connected with a first driving mechanism used for driving the material taking suction cup to move in the front-back direction and the up-down direction, and a glove opening expanding station is arranged in front of the conveying direction of the first conveying belt. The glove opening expanding station is located on the glove bearing table, a lower opening expanding suction cup is arranged on the glove bearing table, an upper opening expanding suction cup is arranged above the lower opening expanding suction cup, and the upper opening expanding suction cup is connected with a second driving mechanism driving the upper opening expanding suction cup to move in the vertical direction. Different suckers are used for grabbing and opening the gloves, and the grabbed gloves are conveyed to the glove grabbing station through the first conveying belt, so that the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of glove production, in particular to a glove feeding and mouth-opening mechanism. Background Art

[0002] Gloves are a type of labor protection supplies that are widely used at present. Gloves are generally woven and produced by a glove knitting machine. After the gloves are produced by the glove knitting machine, subsequent processes are carried out, such as identifying defective products through a glove automatic vision recognition device, packaging them into bundles through a glove automatic tying and packaging device, and turning them over through a glove automatic turning device, etc.

[0003] In each process after glove production, it is often necessary to feed the gloves. For example, when turning the gloves over, the prior art generally places a stack of gloves on a movable platform (such as a conveyor belt, etc.), and after the stack of gloves is conveyed to the designated position, the top glove of the stack is picked up by a device such as a suction cup, and it is fed and moved to the designated position for turning the glove over.

[0004] Chinese Patent Document CN216688774U discloses a full-automatic glove turning machine, and its feeding and mouth-opening process is as follows: The upper suction cup 101 moves left to above the glove feeding position 8 and moves downwards, and grabs a glove from the top of a stack of gloves at the glove feeding position 8; then the upper suction cup 101 moves upwards and right to above the lower suction cup 102, and the upper suction cup 101 descends, so that the lower surface of the glove contacts the lower suction cup 102; at this time, the upper suction cup 101 grabs the upper surface of the glove, the lower suction cup 102 grabs the lower surface of the glove, and then the upper suction cup 101 moves upwards a certain distance to open the glove mouth, completing the material taking process. The upper suction cup 101 and the lower suction cup 102 are needle-piercing suction cups.

[0005] In the above feeding and mouth-opening process, from grabbing the glove to opening the glove mouth, the upper suction cup 101 is required to participate throughout the process. During the process of grabbing and opening a glove, the upper suction cup 101 is always occupied. Only after a glove is opened and taken away by the subsequent glove turning mechanism can the next glove be grabbed. The upper suction cup 101 performs more actions and has a longer execution path, resulting in a longer time from grabbing the glove to opening the glove mouth for a single glove, and the efficiency is not high. Summary of the Utility Model

[0006] To solve the problems of the prior art, the utility model provides a glove feeding and mouth-opening mechanism, which improves the efficiency.

[0007] The technical solution provided by the utility model is as follows:

[0008] A glove loading and mouth - spreading mechanism includes a first conveyor belt. Behind the conveying direction of the first conveyor belt, there is a glove stacking position for placing a stack of gloves to be mouth - spread. Above the first conveyor belt, there is a material - taking suction cup for grasping the top - most glove of the glove stack at the glove stacking position onto the first conveyor belt. The material - taking suction cup is connected to a first driving mechanism that drives the material - taking suction cup to move in the front - back direction and the up - down direction. In front of the conveying direction of the first conveyor belt, there is a glove mouth - spreading station;

[0009] The glove mouth - spreading station is located on a glove bearing table. On the glove bearing table, there is a lower mouth - spreading suction cup, and above the lower mouth - spreading suction cup, there is an upper mouth - spreading suction cup. The upper mouth - spreading suction cup is connected to a second driving mechanism that drives the upper mouth - spreading suction cup to move in the up - down direction;

[0010] When the glove is at the glove stacking position, on the first conveyor belt, and on the glove bearing table, the root of the glove faces the front of the conveying direction of the first conveyor belt.

[0011] Further, the glove loading and mouth - spreading mechanism further includes a second conveyor belt. The conveying direction of the second conveyor belt is the same as that of the first conveyor belt, and there are multiple glove stacking positions on the second conveyor belt.

[0012] Further, a glove stack guiding plate is arranged on the side of the glove stacking position. The glove stack guiding plate is arranged along the conveying direction of the second conveyor belt, and a spacer is arranged between adjacent glove stacking positions.

[0013] Further, a glove stack baffle is arranged in front of the second conveyor belt, and a first pair of photoelectric sensors for detecting whether the glove stack reaches the front end of the second conveyor belt are arranged on both sides of the front end of the second conveyor belt.

[0014] Further, the glove stacking positions are arranged in multiple columns. Each column of glove stacking positions corresponds to a material - taking suction cup and a glove mouth - spreading station, and each glove mouth - spreading station corresponds to a lower mouth - spreading suction cup and an upper mouth - spreading suction cup;

[0015] The glove stack guiding plates are arranged on both sides of the second conveyor belt, and an intermediate plate that serves as both a spacer and a glove stack guiding plate is arranged between adjacent columns of glove stacking positions.

[0016] Further, the top surface of the lower mouth - spreading suction cup is not higher than the top surface of the glove bearing table. A transition plate is arranged between the first conveyor belt and the glove bearing table, and a glove baffle is arranged in front of the glove bearing table.

[0017] Further, on both sides of the glove mouth - spreading station, there is a glove posture - arranging clamping plate. The glove posture - arranging clamping plate is connected to a third driving mechanism for controlling the distance between the two glove posture - arranging clamping plates.

[0018] Further, an installation space is formed in the glove carrier table, the lower mouth-supporting suction cup is arranged in the installation space, a gap is formed between the lower mouth-supporting suction cup and the glove carrier table, and second pairs of photoelectric sensors for detecting whether the glove reaches the glove mouth-supporting station are arranged above and below the gap.

[0019] Further, the material-taking suction cup is arranged on a material-taking suction cup bracket, and the first driving mechanism includes a first power element for driving the material-taking suction cup to move in the up-and-down direction and a second power element for driving the material-taking suction cup bracket to move in the front-and-back direction;

[0020] The third driving mechanism includes a driving plate arranged in the up-and-down direction and a third power element for driving the driving plate to move in the up-and-down direction. An inclined guiding groove is formed in the driving plate, a guiding post is arranged on the glove posture arranging clamping plate, the guiding post is located in the guiding groove, and the guiding groove converts the up-and-down movement of the driving plate into the left-and-right movement of the glove posture arranging clamping plate;

[0021] The glove baffle is connected with a fourth driving mechanism for driving the glove baffle to move in the up-and-down direction.

[0022] Further, the material-taking suction cup bracket includes a guiding shaft arranged in the up-and-down direction, an installation plate is arranged on the guiding shaft, and the first power element drives the installation plate to move in the up-and-down direction;

[0023] An installation shaft for the material-taking suction cup capable of moving relative to the installation plate in the up-and-down direction is arranged on the installation plate, the material-taking suction cup is installed at the bottom end of the installation shaft for the material-taking suction cup, a spring is arranged between the installation plate and the material-taking suction cup on the installation shaft for the material-taking suction cup, and a limiting ring is arranged above the installation plate on the installation shaft for the material-taking suction cup.

[0024] The utility model has the following beneficial effects:

[0025] In the utility model, different suction cups are used for grasping the glove and expanding the glove mouth. The material-taking suction cup is only responsible for material taking, and the upper mouth-supporting suction cup and the lower mouth-supporting suction cup are only responsible for expanding the glove mouth. After the material-taking suction cup grabs the glove onto the first conveyor belt, the first conveyor belt can continuously convey the glove to the glove mouth-supporting station for the upper mouth-supporting suction cup and the lower mouth-supporting suction cup to continuously expand each conveyed glove in sequence. When one glove is being expanded, the subsequent gloves have been grabbed onto the first conveyor belt and conveyed forward. The defect in the prior art that only after one glove is expanded and taken away by the subsequent glove turning mechanism can the next glove be grabbed is solved. Each component respectively completes its own simple actions, with fewer execution actions and a shorter execution path. Gloves can be continuously conveyed and each glove can be expanded in sequence without interruption. The overall time spent on each glove is short, improving the efficiency. Description of the Drawings

[0026] Figure 1 A perspective view of an example of the glove loading and mouth-opening mechanism of the present utility model;

[0027] Figure 2 is Figure 1 an enlarged view of region A of;

[0028] Figure 3 A perspective view of another example of the glove loading and mouth-opening mechanism of the present utility model. Detailed implementation manners

[0029] To make the technical problems, technical solutions and advantages to be solved by the present utility model clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0030] An embodiment of the present utility model provides a glove loading and mouth-opening mechanism. As Figures 1-3 shown, it includes a first conveyor belt 1 which is horizontally arranged. A glove stack position 2 for placing a stack of gloves to be mouth-opened is provided behind its conveying direction. A material-taking suction cup 4 for grasping the uppermost glove 10 of the glove stack 3 on the glove stack position 2 onto the first conveyor belt 1 is arranged above the first conveyor belt 1. The material-taking suction cup 4 is connected to a first driving mechanism for driving the material-taking suction cup 4 to move in the front-back direction and the up-down direction. A glove mouth-opening station 5 is provided in front of the conveying direction of the first conveyor belt 1.

[0031] For easy understanding, the present utility model defines the orientation as follows: The front is the front of the conveying direction of the first conveyor belt, the rear is the rear, the left-right direction is the direction in the horizontal plane and perpendicular to the front-back direction, and the up-down direction is the direction perpendicular to the horizontal plane.

[0032] The glove mouth-opening station 5 is located on a glove bearing table 6. A lower mouth-opening suction cup 7 is arranged on the glove bearing table 6. An upper mouth-opening suction cup 8 is arranged above the lower mouth-opening suction cup 7. The upper mouth-opening suction cup 8 can be directly above the lower mouth-opening suction cup 7. Of course, a certain position offset is also allowed between the two. The upper mouth-opening suction cup 8 is connected to a second driving mechanism 9 for driving the upper mouth-opening suction cup 8 to move in the up-down direction.

[0033] When the glove is on the glove stack position 2, the first conveyor belt 1 and the glove bearing table 6, the root of the glove faces the front of the conveying direction of the first conveyor belt 1, so as to cooperate with the subsequent glove turning mechanism after the glove is opened.

[0034] When the present utility model is in use, the glove on the top layer of the glove stack 3 is grabbed by the material taking suction cup 4, and the material taking suction cup 4 is driven by the first driving mechanism to move up, down, left and right, and the grabbed glove is placed on the first conveyor belt 1. The first conveyor belt 1 conveys the glove forward. During the conveying process, the material taking suction cup 4 continues to grab the next glove. The glove on the first conveyor belt 1 is conveyed forward to the glove mouth expanding station 5 on the glove bearing table 6. The upper mouth expanding suction cup 8 and the lower mouth expanding suction cup 7 suck the upper and lower surfaces of the glove, and the upper mouth expanding suction cup 8 rises under the drive of the second driving mechanism 9, so as to expand the glove. Subsequently, the glove can be turned over by the glove turning mechanism.

[0035] In the present utility model, different suction cups are used for grabbing the glove and expanding the glove. The material taking suction cup is only responsible for taking materials, and the upper mouth expanding suction cup and the lower mouth expanding suction cup are only responsible for expanding the mouth. After the material taking suction cup grabs the glove onto the first conveyor belt, the first conveyor belt can continuously convey the glove to the glove mouth expanding station for the upper mouth expanding suction cup and the lower mouth expanding suction cup to continuously expand each conveyed glove in turn. When one glove is being expanded, the subsequent gloves have been grabbed onto the first conveyor belt and conveyed forward. It solves the defect in the prior art that only after one glove is expanded and taken away by the subsequent glove turning mechanism can the next glove be grabbed. Each component completes its respective simple actions, with fewer executed actions and shorter execution paths. It can continuously convey gloves and continuously expand each glove in turn. The overall time spent on each glove is short, improving the efficiency.

[0036] Since the glove is made of knitted material, for the convenience of each suction cup to grab the glove, the material taking suction cup 4, the upper mouth expanding suction cup 8 and the lower mouth expanding suction cup 7 can be needle punching suction cups.

[0037] The present utility model does not limit the specific setting of the glove stacking position 2. In a simple example, the glove stacking position 2 can be a fixed position arranged behind the first conveyor belt 1, and a stack of gloves can be placed at this position manually.

[0038] In another example, the glove feeding and mouth expanding mechanism further includes a second conveyor belt 11. The conveying direction of the second conveyor belt 11 is the same as that of the first conveyor belt 1, and a plurality of glove stacking positions 2 are arranged on the second conveyor belt 11.

[0039] After the gloves woven by the glove knitting machine are stacked, they are conveyed onto the second conveyor belt 11. There are multiple positions on the second conveyor belt 11, forming multiple glove stacking positions 2. The second conveyor belt 11 conveys multiple stacks of gloves forward in turn.

[0040] The position and attitude of the stack of gloves transported onto the second conveyor belt 11 may not be fixed, that is, the root of the glove may not necessarily face forward. To solve this problem, in this application, a glove stack guide plate 12 is provided on the side of the glove stacking position 2, and the glove stack guide plate 12 is arranged along the conveying direction of the second conveyor belt 11.

[0041] The glove stack guide plates 12 are provided on both sides of the second conveyor belt 11. During the conveying process of the second conveyor belt 11, the glove stack guide plates 12 can guide the glove stack 3 so that the root of the glove generally faces forward. The glove stack guide plates 12 are not provided on the second conveyor belt 11 and do not move together with the second conveyor belt 11, but are fixed. The rear section of the glove stack guide plate 12 can be bent outward, and the overall structure of the glove stack guide plates 12 on both sides forms a flared structure, which is convenient for guiding the glove stack into the space between the two glove stack guide plates 12.

[0042] To prevent the glove stack from collapsing, a spacer can be provided between adjacent glove stacking positions 2. For example, it is provided between the front and rear glove stacking positions 2. The spacer can be a vertically arranged plate located on the second conveyor belt, and it is perpendicular to the conveying direction of the second conveyor belt (the structure of the spacer is not shown in the figure).

[0043] A glove stack baffle 13 is provided in front of the second conveyor belt 11, which serves to block the glove stack, and the root of the glove stack is blocked by the glove stack baffle 13, which can adjust the attitude of the glove stack to a certain extent.

[0044] A first pair of photoelectric sensors 14 for detecting whether the glove stack 3 has reached the front end of the second conveyor belt 11 are provided on both sides of the front end of the second conveyor belt 11. When the glove stack 3 arrives, the light signal of the first pair of photoelectric sensors 14 is blocked by the glove stack 3, thereby sensing the arrival of the glove stack 3, and then controlling the picking suction cup 4 to pick up the glove.

[0045] To adapt to glove stacks of different thicknesses, the height of the first pair of photoelectric sensors 14 is adjustable.

[0046] To improve efficiency, multiple columns can work side by side. Specifically, as Figure 3 shown: The glove stacking positions 2 are in multiple columns, each column of glove stacking positions 2 corresponds to a picking suction cup 4 and a glove mouth-opening station 5, and each glove mouth-opening station 5 corresponds to a lower mouth-opening suction cup 7 and an upper mouth-opening suction cup 8. In this way, multiple gloves can be picked up and the mouths opened simultaneously, doubling the efficiency.

[0047] When there are multiple columns of glove stacking positions 2, an intermediate plate 15 is provided between adjacent columns of glove stacking positions 2. This intermediate plate 15 can both serve as the aforementioned spacer and as the aforementioned glove stack guide plate 12.

[0048] In order to enable the gloves to be smoothly transferred from the first conveyor belt 1 to the glove carrier 6, a transition plate 16 is provided between the first conveyor belt 1 and the glove carrier 6. This transition plate is used to fill the gap between the first conveyor belt 1 and the glove carrier 6, and its shape is adapted to the shape of the gap between the first conveyor belt 1 and the glove carrier 6. At the same time, the top surface of the lower mouth suction cup 7 is not higher than the top surface of the glove carrier 6 to prevent the lower mouth suction cup 7 from blocking the transfer of the gloves.

[0049] A glove baffle 17 is provided in front of the glove carrier 6 to block the gloves. And the root of the glove is blocked by the glove baffle 17, which can adjust the posture of the glove to a certain extent. The glove baffle 17 is connected to a fourth driving mechanism 28 that drives the glove baffle 17 to move in the up and down direction.

[0050] On both sides of the glove mouth expanding station 5, there is a glove posture adjusting clamp plate 18 each. The glove posture adjusting clamp plate 18 is specifically located at the position of the root of the glove. The glove posture adjusting clamp plate 18 is connected to a third driving mechanism 19 that controls the distance between the two glove posture adjusting clamp plates 18. After the glove reaches the glove mouth expanding station 5, through the control of the third driving mechanism 19, the distance between the two glove posture adjusting clamp plates 18 is reduced. After the two glove posture adjusting clamp plates 18 contact the glove, the glove posture is adjusted to be able to adjust the correct posture of the glove.

[0051] The glove carrier 6 is provided with an installation space 20, and the lower mouth suction cup 7 is arranged in the installation space 20. There is a gap 21 between the lower mouth suction cup 7 and the glove carrier 6. Above and below the gap 21, there are second pairs of photoelectric sensors (not shown in the figure) for detecting whether the glove reaches the glove mouth expanding station 5.

[0052] When the glove arrives, the light signal of the second pair of photoelectric sensors is blocked by the glove, thereby sensing the arrival of the glove, and then controlling the upper mouth suction cup 8 to move downward to start the operation of expanding the glove mouth.

[0053] The aforementioned material taking suction cup 4 is arranged on the material taking suction cup bracket 22. The first driving mechanism includes a first power element 23 that drives the material taking suction cup 4 to move in the up and down direction and a second power element (not shown in the figure) that drives the material taking suction cup bracket 22 to move in the front and back direction.

[0054] Specifically, the material taking suction cup bracket 22 includes a guide shaft 29 arranged in the up and down direction. An installation plate 30 is arranged on the guide shaft 29, and the first power element 23 drives the installation plate 30 to move in the up and down direction. The material taking suction cup bracket 22 is arranged on the bottom box body 34. The box body 34 is provided with a long groove 35 in the front and back direction. The bottom of the material taking suction cup bracket 22 extends downward from the long groove 35 into the box body 34. The second power element is arranged in the box body 34 to control the material taking suction cup bracket 22 to move back and forth along the long groove 35.

[0055] Since the gloves on the glove feeding position 2 are stacked, during the continuous grasping process, the thickness of the glove stack 3 becomes thinner and thinner, so it is difficult to control the downward movement distance of the mounting plate 30. To solve this problem, the present utility model is provided with a material taking suction cup mounting shaft 31 on the mounting plate 30 that can move in the up and down direction relative to the mounting plate 30. The material taking suction cup 4 is mounted at the bottom end of the material taking suction cup mounting shaft 31, and a spring 32 is arranged between the mounting plate 30 and the material taking suction cup 4 on the material taking suction cup mounting shaft 31. By arranging the spring 32, a certain buffer is provided for the downward stroke of the material taking suction cup 4, so as to adapt to glove stacks of different thicknesses. A limit ring 33 is arranged above the mounting plate 30 on the material taking suction cup mounting shaft 31 for lifting the material taking suction cup 4.

[0056] For the third driving mechanism 19, it includes a driving plate 24 arranged in the up and down direction and a third power element 25 for driving the driving plate 24 to move in the up and down direction. An inclined guide groove 26 is formed on the driving plate 24. A guide post 27 is arranged on the glove attitude arranging clamping plate 18. The guide post 27 is located in the guide groove 26. The guide groove 26 converts the up and down movement of the driving plate 24 into the left and right movement of the glove attitude arranging clamping plate 18, so as to realize the adjustment of the distance between the two glove attitude arranging clamping plates 18.

[0057] The specific forms of the foregoing first power element 23, second power element, third driving mechanism 19, and fourth driving mechanism 28 are not limited and can be cylinders, hydraulic cylinders, screw motors, etc.

[0058] The above is the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle described in the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A glove feeding opening mechanism, characterized in that: The invention comprises a first conveyor belt, wherein a glove stacking position for placing a glove stack to be stretched is arranged at the rear of the conveying direction of the first conveyor belt, a material taking suction cup for grabbing the top glove of the glove stack on the glove stacking position and placing it on the first conveyor belt is arranged above the first conveyor belt, the material taking suction cup is connected to a first driving mechanism for driving the material taking suction cup to move in the front-back direction and the up-down direction, and a glove stretching station is arranged in front of the conveying direction of the first conveyor belt; The glove opening station is located on the glove bearing platform, a lower opening suction cup is arranged on the glove bearing platform, an upper opening suction cup is arranged above the lower opening suction cup, and the upper opening suction cup is connected to a second driving mechanism that drives the upper opening suction cup to move in the up and down directions; When the gloves are on the glove stacking position, the first conveyor belt and the glove carrying platform, the root of the gloves faces forward in the conveying direction of the first conveyor belt.

2. The glove feeding opening mechanism according to claim 1, characterized in that: The glove feeding opening mechanism further comprises a second conveyor belt, the conveying direction of the second conveyor belt is consistent with that of the first conveyor belt, and a plurality of glove stacking positions are arranged on the second conveyor belt.

3. The glove feeding opening mechanism according to claim 2, characterized in that: A glove stack guide plate is arranged on the side of the glove stacking position, and the glove stack guide plate is arranged along the conveying direction of the second conveyor belt. A partition plate is arranged between adjacent glove stacking positions.

4. The glove feeding opening mechanism according to claim 2, characterized in that: A glove stack baffle is arranged in front of the second conveyor belt, and a first pair of photoelectric sensors for detecting whether the glove stack reaches the front end of the second conveyor belt are arranged on both sides of the front end of the second conveyor belt.

5. The glove feeding opening mechanism according to claim 3, characterized in that: The glove stacking positions are arranged in multiple rows, each row of glove stacking positions corresponds to a material taking suction cup and a glove opening station, and each glove opening station corresponds to a lower opening suction cup and an upper opening suction cup; The glove stack guide plates are arranged on both sides of the second conveyor belt, and an intermediate plate serving as both a partition plate and a glove stack guide plate is arranged between adjacent rows of glove stacking positions.

6. The glove feeding opening mechanism according to any one of claims 1 to 5, characterized in that: The top surface of the lower support suction cup is not higher than the top surface of the glove carrying platform, a transition plate is arranged between the first conveyor belt and the glove carrying platform, and a glove baffle is arranged in front of the glove carrying platform.

7. The glove feeding opening mechanism according to claim 6, characterized in that: A glove posture adjustment splint is respectively arranged on both sides of the glove opening station, and the glove posture adjustment splint is connected to a third driving mechanism for controlling the distance between the two glove posture adjustment splints.

8. The glove feeding opening mechanism according to claim 7, characterized in that: The glove supporting platform is provided with an installation space, the lower support suction cup is arranged in the installation space, a gap is provided between the lower support suction cup and the glove supporting platform, and a second pair of photoelectric sensors for detecting whether the gloves have reached the glove support station are provided above and below the gap.

9. The glove feeding opening mechanism according to claim 7, characterized in that: The material picking suction cup is arranged on the material picking suction cup bracket, and the first driving mechanism comprises a first power element driving the material picking suction cup to move in the up-down direction and a second power element driving the material picking suction cup bracket to move in the front-back direction; The third driving mechanism comprises a driving plate arranged in the up-down direction and a third power element driving the driving plate to move in the up-down direction, the driving plate is provided with an inclined guide groove, the glove posture arranging splint is provided with a guide column, the guide column is located in the guide groove, and the guide groove converts the up-down movement of the driving plate into the left-right movement of the glove posture arranging splint; The glove baffle is connected to a fourth driving mechanism for driving the glove baffle to move in the up and down directions.

10. The glove feeding opening mechanism according to claim 9, characterized in that: The material taking suction cup bracket comprises a guide shaft arranged in the up-down direction, a mounting plate is arranged on the guide shaft, and the first power element drives the mounting plate to move in the up-down direction; The mounting plate is provided with a material picking suction cup mounting shaft which can move in the up and down directions relative to the mounting plate, the material picking suction cup is mounted on the bottom end of the material picking suction cup mounting shaft, a spring is arranged on the material picking suction cup mounting shaft between the mounting plate and the material picking suction cup, and a limiting ring is arranged on the material picking suction cup mounting shaft above the mounting plate.

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