Adsorption mechanism and display panel taking and placing equipment

Abstract

The utility model relates to an adsorption mechanism and display panel taking and placing equipment. The adsorption mechanism comprises a plurality of suction nozzle units, a plurality of suction nozzles and a plurality of suction nozzles, the suction nozzle limiting assembly comprises a plurality of first suction nozzle limiting pieces and a second suction nozzle limiting piece, the first suction nozzle limiting pieces are distributed in the width direction of the suction nozzle limiting assembly at intervals and movably connected to the second suction nozzle limiting piece, and any suction nozzle unit is movably connected to any first suction nozzle limiting piece in the length direction of the suction nozzle limiting assembly. According to the adsorption mechanism, the stability of the workpiece (such as a display panel) in the carrying process is improved, and meanwhile, the accuracy and the moving efficiency of the workpiece in the carrying process are guaranteed, so that the large-batch carrying requirement in the machining process of the workpiece (such as the display panel) is met, and the higher requirement of the machining process of the workpiece (such as the display panel) is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display panel handling, in particular to a suction mechanism and a display panel taking and placing device. BACKGROUND

[0002] With the continuous progress of display panel handling technology and the continuous diversification of product application scenarios, the requirements for the display panel handling process are becoming higher and higher. In the production process of display panels, various handling devices are needed to realize the transfer of the position of the display panel to complete various processing procedures such as panel repair.

[0003] In related technologies, the position of the suction cup on the mechanical arm is fixed, which may cause uneven distribution of the suction nozzle position relative to the product when the mechanical arm sucks different sizes of display panels, and manual adjustment of the suction nozzle position or replacement of different specifications of the mechanical arm is required, which is difficult to meet the large-batch display panel handling demand. INVENTION CONTENTS

[0004] Therefore, it is necessary to provide a suction mechanism and a display panel taking and placing device to solve the above technical problems.

[0005] A suction mechanism comprises:

[0006] A plurality of suction nozzle units capable of sucking workpieces;

[0007] A suction nozzle limiting assembly comprising a plurality of first suction nozzle limiting members and second suction nozzle limiting members, the plurality of first suction nozzle limiting members are spaced apart and movably connected to the second suction nozzle limiting members along the width direction of the suction nozzle limiting assembly, and any suction nozzle unit is movably connected to any first suction nozzle limiting member along the length direction of the suction nozzle limiting assembly.

[0008] In one embodiment, the plurality of suction nozzle units comprises a first suction nozzle unit, a second suction nozzle unit, a third suction nozzle unit and a fourth suction nozzle unit, the plurality of first suction nozzle limiting members comprises a first suction nozzle limiting member, a second suction nozzle limiting member, a third suction nozzle limiting member and a fourth suction nozzle limiting member, the first suction nozzle unit is movably connected to the first suction nozzle limiting member, the second suction nozzle unit is movably connected to the second suction nozzle limiting member, the third suction nozzle unit is movably connected to the first suction nozzle limiting member and the third suction nozzle limiting member, and the fourth suction nozzle unit is movably connected to the third suction nozzle limiting member and the fourth suction nozzle limiting member.

[0009] In one embodiment, the number of suction nozzle members of the first suction nozzle unit and the second suction nozzle unit is 1 and 2 respectively, one suction nozzle member of the first suction nozzle unit is connected to the middle part of the first suction nozzle limiting member, and two suction nozzle members of the second suction nozzle unit are connected to the middle part of the second suction nozzle limiting member.

[0010] In one of the embodiments, the third suction unit and the fourth suction unit each have four suction pieces, two of the suction pieces in the third suction unit are arranged at two sides of the first suction unit and connected to the first suction limiting piece, one of the suction pieces in the fourth suction unit is connected to the middle part of the third suction limiting piece, the other two of the suction pieces in the third suction unit are arranged at two sides of one of the suction pieces in the fourth suction unit and connected to the third suction limiting piece, and the other three of the suction pieces in the fourth suction unit are arranged at intervals and connected to the fourth suction limiting piece.

[0011] In one of the embodiments, the suction unit comprises a vacuum suction piece, a suction mounting part, a suction adjusting part, and a first fastening part, the suction adjusting part is provided with a limiting clamping groove and a strip-shaped hole at a side close to the vacuum suction piece, the vacuum suction piece is connected to one side of the suction mounting part, and the first fastening part is connected to the other side of the suction mounting part through the limiting clamping groove or the strip-shaped hole.

[0012] In one of the embodiments, a side of the suction adjusting part close to the suction limiting assembly is provided with a sliding rail and a second fastening part, and the second fastening part is connected to the sliding rail through the first suction limiting piece.

[0013] In one of the embodiments, the suction mechanism further comprises:

[0014] An overpressure sensing unit is movably connected to an inner suction limiting piece in a thickness direction of the suction limiting assembly, and the inner suction limiting piece is one of the first suction limiting pieces close to an inner side of the suction limiting assembly.

[0015] In one of the embodiments, a vertical height value of a bottom sensing end of the overpressure sensing unit from the inner suction limiting piece is less than a vertical height value of a bottom suction end of the suction unit from the inner suction limiting piece.

[0016] In one of the embodiments, the overpressure sensing unit comprises a telescopic vacuum suction disc, a sensing mounting part, a sensing part, and a photoelectric switch, one side of the sensing mounting part is provided with a mounting through hole, the telescopic vacuum suction disc is connected to the sensing mounting part through the mounting through hole, the sensing part is connected to a top of the telescopic vacuum suction disc, and the photoelectric switch is connected to a side of the sensing mounting part close to the suction limiting assembly.

[0017] A display panel taking and placing device comprises:

[0018] The suction mechanism as described above;

[0019] A control mechanism, an output end of the control mechanism being connected to the plurality of suction nozzle units.

[0020] The technical effects of the embodiments provided in the present application are as follows:

[0021] The suction mechanism, the plurality of first suction nozzle limiters in the suction nozzle limiting assembly are distributed along the width direction of the suction nozzle limiting assembly and movably connected to the second suction nozzle limiter in the suction nozzle limiting assembly, which can positionally constrain the plurality of suction nozzle units in the width direction of the suction nozzle limiting assembly. Meanwhile, the plurality of suction nozzle units of the workpiece (such as a display panel) movably connected to one of the plurality of first suction nozzle limiters in the length direction of the suction nozzle limiting assembly, which can positionally constrain the plurality of suction nozzle units in the length direction of the suction nozzle limiting assembly, thereby adjusting the position of the plurality of suction nozzle units in the horizontal direction. Compared with the fixed position of the suction disc on the mechanical arm, the problem of uneven distribution of the suction nozzle position relative to the product when the mechanical arm sucks different sizes of display panels is effectively improved, and the problem of manually adjusting the position of the suction nozzle or replacing the mechanical arm of different specifications is solved. The stability of the workpiece (such as a display panel) carrying process is improved, and the accuracy and moving efficiency of the workpiece carrying process are ensured, thereby meeting the large quantity carrying demand in the workpiece (such as a display panel) processing process, and further meeting the higher requirements of the workpiece (such as a display panel) processing process. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 It is a structural schematic diagram of the suction mechanism in an embodiment;

[0024] Figure 2 It is a partial structural schematic diagram of the suction mechanism in an embodiment;

[0025] Figure 3 It is a specific structural schematic diagram of the plurality of suction nozzle units 10 in an embodiment;

[0026] Figure 4 It is a specific structural schematic diagram of the plurality of suction nozzle units 10 in an embodiment;

[0027] Figure 5 It is a specific structural schematic diagram of the overpressure sensing unit 30 in an embodiment;

[0028] Figure 6 This is a schematic diagram of the structure of a display panel loading and unloading device in one embodiment. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0033] Figure 1 This is a schematic diagram of the adsorption mechanism in one embodiment.

[0034] In this embodiment, as Figure 1 As shown, the adsorption mechanism is used for display panel picking and placing equipment. The adsorption mechanism includes multiple suction nozzle units 10, suction nozzle limiting components 20 and overpressure sensing units 30. The multiple suction nozzle units 10 can adsorb workpieces.

[0035] The plurality of suction nozzle units 10 include a first suction nozzle unit 110, a second suction nozzle unit 120, a third suction nozzle unit 130, and a fourth suction nozzle unit 140. The suction nozzle limiting assembly 20 includes a first suction nozzle limiting member 210, a second suction nozzle limiting member 220, a third suction nozzle limiting member 230, and a fourth suction nozzle limiting member 240. The first suction nozzle unit 110 is movably connected to the first suction nozzle limiting member 210, the second suction nozzle unit 120 is movably connected to the second suction nozzle limiting member 220, the third suction nozzle unit 130 is movably connected to the first suction nozzle limiting member 210 and the third suction nozzle limiting member 230, and the fourth suction nozzle unit 140 is movably connected to the third suction nozzle limiting member 230 and the fourth suction nozzle limiting member 240.

[0036] Multiple suction nozzle units 10 can be functional units that are movably connected to the suction nozzle limiting component 20, can be positioned along the length and width directions of the suction nozzle limiting component 20, and can adsorb workpieces (such as display panels).

[0037] The first suction nozzle unit 110 may be a functional component that is movably connected to the first suction nozzle limiting member 210, and can be adjusted in position along the length direction of the first suction nozzle limiting member 210 and can follow the first suction nozzle limiting member 210 to be adjusted in position along the width direction of the suction nozzle limiting assembly 20 so as to adsorb small-sized workpieces or part of the workpiece.

[0038] The second suction unit 120 may be a functional component that is movably connected to the second suction unit 220, capable of adjusting its position along the length direction of the second suction unit 220, and capable of adjusting its position along the width direction of the suction unit 20 in accordance with the second suction unit 220 to cooperate with the first suction unit 110 to adsorb medium-sized workpieces or a portion of the workpiece.

[0039] like Figure 2 As shown, the first suction nozzle unit 110 (as shown) ① (as shown), second suction unit 120 (as shown) ② The number of suction nozzles shown is 1 and 2 respectively. One suction nozzle of the first suction nozzle unit 110 is connected to the middle of the first suction nozzle limiting member 210, which can realize the adsorption of small-sized workpieces or part of the workpiece. The two suction nozzles of the second suction nozzle unit 120 are connected to the middle of the second suction nozzle limiting member 220, and together with the first suction nozzle unit 110, multiple suction nozzles can be evenly distributed in a medium area, thereby realizing the adsorption of medium-sized workpieces or part of the workpiece, thus improving the adsorption efficiency while ensuring the adsorption stability of medium-sized workpieces.

[0040] The third suction unit 130 may be movably connected to the first suction unit 210 and the third suction unit 230, and be able to adjust its position along the length direction of the first suction unit 210 and the third suction unit 230, and be able to adjust its position along the width direction of the suction unit 20 in conjunction with the first suction unit 210 and the third suction unit 230 to cooperate with the first suction unit 110 and the second suction unit 120 to adsorb larger workpieces or parts of workpieces.

[0041] The fourth suction nozzle unit 140 may be movably connected to the third suction nozzle limiting member 230 and the fourth suction nozzle limiting member 240, and can be adjusted in position along the length direction of the third suction nozzle limiting member 230 and the fourth suction nozzle limiting member 240, and can also be adjusted in position along the width direction of the suction nozzle limiting assembly 20 to cooperate with the first suction nozzle unit 110, the second suction nozzle unit 120 and the third suction nozzle unit 130 to adsorb large-sized workpieces.

[0042] Third suction unit 130 (e.g.) ③ (as shown), fourth suction unit 140 (as shown) ④ The number of suction nozzles in each of the three suction nozzle units (as shown) is 4. Two suction nozzles in the third suction nozzle unit 130 are spaced apart on both sides of the first suction nozzle unit 110 and connected to the first suction nozzle limiting member 210. One suction nozzle in the fourth suction nozzle unit 140 is connected to the middle of the third suction nozzle limiting member 230. The other two suction nozzles in the third suction nozzle unit 130 are spaced apart on both sides of one suction nozzle in the fourth suction nozzle unit 140 and connected to the third suction nozzle limiting member 230. The other three suction nozzles in the fourth suction nozzle unit 140 are spaced apart and connected to the fourth suction nozzle limiting member 240.

[0043] By setting the distribution positions of multiple nozzles in the third nozzle unit 130, and cooperating with the first nozzle unit 110 and the second nozzle unit 120, a uniformly spaced distribution of multiple nozzles can be achieved over a large area, thereby enabling the adsorption of larger workpieces or parts thereof, thus improving adsorption efficiency while ensuring adsorption stability for larger workpieces. Furthermore, by setting the distribution positions of multiple nozzles in the fourth nozzle unit 140, and cooperating with the first nozzle unit 110, the second nozzle unit 120, and the third nozzle unit 130, a uniformly spaced distribution of multiple nozzles can be achieved over an even larger area, thereby enabling the adsorption of even larger workpieces, thus improving adsorption efficiency while ensuring adsorption stability for even larger workpieces.

[0044] The adsorption mechanism divides 11 suction nozzles from the first suction nozzle unit 110, the second suction nozzle unit 120, the third suction nozzle unit 130, and the fourth suction nozzle unit 140 into four paths, which are set in the first suction nozzle limiting member 210, the second suction nozzle limiting member 220, the third suction nozzle limiting member 230, and the fourth suction nozzle limiting member 240. This allows for the uniform spacing of multiple suction nozzles across different areas for workpieces of different sizes. The on / off state of the four suction nozzle units is controlled by four solenoid valves.

[0045] For example, when dealing with small workpieces (such as display panels) smaller than 3 inches, the first suction unit 110 is used for adsorption; when dealing with medium-sized workpieces (such as display panels) of 2-8 inches, the first suction unit 110 and the second suction unit 120 are used for adsorption; when dealing with larger workpieces (such as display panels) of 8-16 inches, the first suction unit 110, the second suction unit 120 and the third suction unit 130 are used simultaneously for adsorption; when dealing with large workpieces (such as display panels) of 16-20 inches, all four suction units are activated simultaneously for adsorption.

[0046] like Figure 3 and Figure 4 As shown, the suction nozzle unit includes a vacuum nozzle 1110, a suction nozzle mounting component 1120, a suction nozzle height adjustment component 1130, and a first fastening component 1140. The suction nozzle height adjustment component 1130 has a limiting groove and a slotted hole on the side near the vacuum nozzle 1110. The vacuum nozzle 1110 is connected to one side of the suction nozzle mounting component 1120. The first fastening component 1140 passes through the limiting groove or the slotted hole and connects to the other side of the suction nozzle mounting component 1120. A slide rail 1150 and a second fastening component 1160 are provided on the side of the suction nozzle height adjustment component 1130 near the suction nozzle limiting assembly 20. The second fastening component 1160 passes through the first suction nozzle limiting member 210 and connects to the slide rail 1150. There are multiple suction nozzle height adjustment components 1130, each of which is spaced apart along the thickness direction of the suction nozzle limiting assembly 20 and movably connected to any of the first suction nozzle limiting members 210.

[0047] The nozzle height adjustment component 1130 can be a functional structure connected to the nozzle limiting component 20 and the vacuum nozzle 1110, capable of vertically adjusting the height of the vacuum nozzle 1110 along the thickness direction of the nozzle limiting component 20.

[0048] Optionally, the nozzle mounting component 1120 can be a nozzle mounting block or nozzle mounting plate, the nozzle height adjustment component 1130 can be a nozzle adjustment seat or nozzle adjustment block, and the first fastening component 1140 can be a fastening knob.

[0049] The relative position of the vacuum suction nozzle 1110 and the workpiece surface can be adjusted by the cooperation of the vacuum suction nozzle 1110, the suction nozzle mounting component 1120, the suction nozzle height adjusting component 1130, the first fastening component 1140, the sliding rail 1150, and the second fastening component 1160, so that the vacuum suction nozzle 1110 in the suction nozzle unit can be extended for work when multiple suction nozzle units 10 are needed to adsorb the workpiece, and the vacuum suction nozzle 1110 in the suction nozzle unit can be retracted when multiple suction nozzle units 10 are not needed to adsorb the workpiece, thereby improving the problem that the excess unused vacuum suction nozzle 1110 in the suction nozzle unit is mistakenly touched on the platform when adsorbing a non-maximum size workpiece, thereby improving the protection of the vacuum suction nozzle 1110 in the suction nozzle unit, and thereby improving the application scenarios and range of the suction nozzle unit.

[0050] It should be noted that when adsorbing a small size workpiece (such as a display panel), the vacuum suction nozzle 1110 in the unused suction nozzle unit can be loosened by rotating the knob on the suction nozzle height adjusting component 1130, and the vacuum suction nozzle 1110 connected to the suction nozzle mounting component 1120 can be pushed to the top of the strip-shaped hole and tightened by rotating the knob; in addition, in order to prevent the strip-shaped hole from loosening during repeated use, a counterbore design is made below the strip-shaped hole, which effectively improves the problem that the suction nozzle unit will loosen due to stress.

[0051] The suction nozzle limiting assembly 20 includes a plurality of first suction nozzle limiting members 210 and second suction nozzle limiting members 220, the plurality of first suction nozzle limiting members 210 are spaced apart along the width direction of the suction nozzle limiting assembly 20 and are movably connected to the second suction nozzle limiting members 220, and any suction nozzle unit is movably connected to any first suction nozzle limiting member 210 along the length direction of the suction nozzle limiting assembly 20.

[0052] The suction nozzle limiting assembly 20 can be connected to the plurality of suction nozzle units 10 and the suction nozzle height adjusting assembly 30, and can cooperate with the suction nozzle height adjusting assembly 30 to adjust the position of the plurality of suction nozzle units 10 along the length direction and the width direction of the suction nozzle limiting assembly 20, so as to realize the function of uniformly spacing the plurality of suction nozzle members in different area ranges. Alternatively, the first suction nozzle limiting member 210 can be a suction nozzle fixing strip spaced apart along the width direction of the suction nozzle assembly. The second suction nozzle limiting member 220 can be connected to the suction nozzle fixing seat.

[0053] Through the cooperation of the plurality of first suction nozzle limiting members 210 and the second suction nozzle limiting members 220, the position of the plurality of suction nozzle units 10 can be constrained from the length direction and the width direction of the suction nozzle limiting assembly 20, so as to realize the uniform spacing of the suction nozzle members in the plurality of suction nozzle units 10 in different area ranges, thereby ensuring the adsorption stability of workpieces (such as display panels) of different sizes, and improving the accuracy and moving efficiency of the workpiece carrying process.

[0054] The overpressure sensing unit 30 is movably connected to the inner side suction nozzle limiting piece in the thickness direction of the suction nozzle limiting assembly 20, and the inner side suction nozzle limiting piece is a first suction nozzle limiting piece 210 close to the inner side of the suction nozzle limiting assembly 20 among the plurality of first suction nozzle limiting pieces 210; the vertical height value of the bottom sensing end of the overpressure sensing unit 30 from the inner side suction nozzle limiting piece is less than the vertical height value of the bottom adsorption end of the suction nozzle unit from the inner side suction nozzle limiting piece.

[0055] The overpressure sensing unit 30 can be arranged close to the middle of the suction nozzle limiting assembly 20 and parallel to the plurality of suction nozzle units 10, and can be a functional unit capable of sensing the force when the plurality of suction nozzle units 10 excessively adsorb the workpiece (such as a display panel).

[0056] As shown in Figure 5 , the overpressure sensing unit 30 includes a telescopic vacuum suction cup 3110, a sensing mounting component 3120, a sensing component 3130, and a photoelectric switch 3140. The sensing mounting component 3120 is provided with a mounting through hole, and the telescopic vacuum suction cup 3110 is connected to the sensing mounting component 3120 through the mounting through hole. The sensing component 3130 is connected to the top of the telescopic vacuum suction cup 3110, and the photoelectric switch 3140 is connected to the side of the sensing mounting component 3120 close to the suction nozzle limiting assembly 20.

[0057] Optionally, the sensing mounting component 3120 can be a sensing mounting block or a sensing mounting seat, and the sensing component 3130 can be a sensing rod or a sensing bar.

[0058] Through the cooperation of the telescopic vacuum suction cup 3110, the sensing mounting component 3120, the sensing component 3130, and the photoelectric switch 3140, when the suction nozzle piece (such as the vacuum suction nozzle 1110) in the plurality of suction nozzle units 10 is pressed close to the suction nozzle stroke limit, the photoelectric switch 3140 will sense the sensing component 3130 (such as a sensing rod), and the adsorption mechanism will stop descending, so that the force when the plurality of suction nozzle units 10 excessively adsorb the workpiece (such as a display panel) can be quickly and accurately sensed, the damage to the workpiece surface caused by the excessive adsorption of the plurality of suction nozzle units 10 due to the excessive pressing amount of the plurality of suction nozzle units 10 on the carrier caused by the excessive descending can be improved, and thus the stability of the workpiece adsorption can be ensured, and the stability and reliability of the workpiece carrying process can be improved.

[0059] The application also provides a display panel taking and placing device, as shown in Figure 6 , the display panel taking and placing device includes the adsorption mechanism and the control mechanism in the above embodiments, the output end of the control mechanism is connected to the plurality of suction nozzle units, and the control mechanism includes an electromagnetic switch valve 40 and a suction nozzle busbar 50.

[0060] The division of each module in the adsorption mechanism is only for illustration, and in other embodiments, the adsorption mechanism can be divided into different modules as needed to complete all or part of the functions of the adsorption mechanism.

[0061] The adsorption mechanism and the display panel taking and placing device provided by the above embodiments can position the plurality of suction nozzle units in the width direction of the suction nozzle limiting assembly by the plurality of first suction nozzle limiting pieces in the suction nozzle limiting assembly and the second suction nozzle limiting piece movably connected to the suction nozzle limiting assembly, and can position the plurality of suction nozzle units in the length direction of the suction nozzle limiting assembly by the plurality of suction nozzle units movably connected to one of the plurality of first suction nozzle limiting pieces in the length direction of the suction nozzle limiting assembly, so as to adjust the position of the plurality of suction nozzle units in the horizontal direction. Compared with the fixed position of the suction disc on the mechanical arm, the problem of uneven distribution of the suction nozzle position relative to the product when the mechanical arm adsorbs display panels of different sizes can be effectively improved, and the problem of manual adjustment of the suction nozzle position or replacement of different specifications of the mechanical arm is avoided. The stability of the workpiece (such as a display panel) during the carrying process is improved, and the accuracy and moving efficiency of the carrying process are ensured, thereby meeting the large-batch carrying demand of the workpiece (such as a display panel) during the processing process, and further meeting the higher requirements of the workpiece (such as a display panel) during the processing process, which has important economic value and practical value.

[0062] The technical features of the above-described embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0063] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. An adsorption mechanism characterized by, include: Multiple suction nozzle units can adsorb workpieces; The nozzle limiting assembly includes a plurality of first nozzle limiting members and second nozzle limiting members. The plurality of first nozzle limiting members are spaced apart along the width direction of the nozzle limiting assembly and are movably connected to the second nozzle limiting members. Any nozzle unit is movably connected to any first nozzle limiting member along the length direction of the nozzle limiting assembly.

2. The suction mechanism according to claim 1, wherein The plurality of suction nozzle units include a first suction nozzle unit, a second suction nozzle unit, a third suction nozzle unit, and a fourth suction nozzle unit. The plurality of first suction nozzle limiting members include a first suction nozzle limiting member, a second suction nozzle limiting member, a third suction nozzle limiting member, and a fourth suction nozzle limiting member. The first suction nozzle unit is movably connected to the first suction nozzle limiting member, the second suction nozzle unit is movably connected to the second suction nozzle limiting member, the third suction nozzle unit is movably connected to the first suction nozzle limiting member and the third suction nozzle limiting member, and the fourth suction nozzle unit is movably connected to the third suction nozzle limiting member and the fourth suction nozzle limiting member.

3. The suction mechanism according to claim 2, wherein The first suction unit and the second suction unit have 1 and 2 suction components, respectively. One suction component of the first suction unit is connected to the middle of the first suction limiting component, and two suction components of the second suction unit are connected to the middle of the second suction limiting component.

4. The suction mechanism according to claim 2, wherein The third suction unit and the fourth suction unit each have four suction components. Two suction components in the third suction unit are spaced apart on both sides of the first suction unit and connected to the first suction nozzle limiting member. One suction component in the fourth suction unit is connected to the middle of the third suction nozzle limiting member. The other two suction components in the third suction unit are spaced apart on both sides of one suction component in the fourth suction unit and connected to the third suction nozzle limiting member. The other three suction components in the fourth suction unit are spaced apart and connected to the fourth suction nozzle limiting member.

5. The suction mechanism according to claim 1, wherein The nozzle unit includes a vacuum nozzle, a nozzle mounting component, a nozzle adjusting component, and a first fastening component. The nozzle adjusting component has a limiting groove and a strip hole on the side near the vacuum nozzle. The vacuum nozzle is connected to one side of the nozzle mounting component. The first fastening component passes through the limiting groove or the strip hole and is connected to the other side of the nozzle mounting component.

6. The suction mechanism according to claim 5, wherein The suction nozzle adjusting component has a slide rail and a second fastening component on the side near the suction nozzle limiting component. The second fastening component passes through the first suction nozzle limiting component and is connected to the slide rail.

7. The suction mechanism according to claim 1, wherein The adsorption mechanism further includes: An overpressure sensing unit is movably connected to an inner nozzle limiting member along the thickness direction of the nozzle limiting assembly. The inner nozzle limiting member is the first nozzle limiting member closest to the inside of the nozzle limiting assembly among a plurality of first nozzle limiting members.

8. The suction mechanism according to claim 7, wherein The vertical height of the bottom sensing end of the overpressure sensing unit from the inner suction nozzle limiting member is less than the vertical height of the bottom adsorption end of the suction nozzle unit from the inner suction nozzle limiting member.

9. The suction mechanism according to claim 7, wherein The overpressure sensing unit comprises a telescopic vacuum chuck, a sensing mounting component, a sensing component and a photoelectric switch, one side of the sensing mounting component is provided with a mounting through hole, the telescopic vacuum chuck is connected to the sensing mounting component through the mounting through hole, the sensing component is connected to the top of the telescopic vacuum chuck, and the photoelectric switch is connected to one side of the sensing mounting component close to the suction nozzle limiting assembly.

10. A display panel pick-and-place apparatus, comprising: Comprise: The suction mechanism according to any one of claims 1 to 9; The control mechanism, and the output end of the control mechanism is connected to a plurality of suction nozzle units.

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