Sheet thickness detection mechanism and hoisting device

Abstract

The invention belongs to the technical field of plate transportation, and discloses a plate thickness detection mechanism and a hoisting device.The detection mechanism comprises an overturning assembly and a thickness detection assembly, and the overturning assembly is used for overturning the edge part of a plate; the thickness detection assembly comprises a fixed support and a sliding swing arm, the sliding swing arm is rotationally connected to the fixed support through a rotating shaft, a clamping space for clamping a plate is formed between the sliding swing arm and the fixed support, the sliding swing arm keeps the trend of rotating towards the direction of the fixed support when the thickness of the plate is measured, and the rotating shaft is connected with an angle sensor. The angle sensor is used for measuring the angle change value of the rotating shaft. The sheet thickness detection mechanism and the hoisting device comprising the sheet thickness detection mechanism are high in sheet thickness detection precision.

Description

Technical Field

[0001] The invention relates to the technical field of sheet material transportation, and in particular to a sheet material thickness detection mechanism and a hoisting device. Background Art

[0002] In daily production, when it is necessary to move plate materials (referred to as sheets) such as sheet metal on an assembly line, a crane is usually used to transfer the sheets. The crane can absorb the stacked sheets one by one and move them to the designated location.

[0003] After lifting the sheet material, the overhead crane needs to detect the basic parameters of the sheet material, such as the weight, width, thickness, etc. Currently, the thickness of the sheet material is mainly detected by photoelectric switches installed on the overhead crane. The photoelectric switch determines the thickness of the sheet material by detecting the opening width of the clamping claws that clamp the sheet material. The detection accuracy is low and it is easy to make misjudgments. Summary of the invention

[0004] The object of the present invention is to provide a plate thickness detection mechanism and a hoisting device to solve the problem of low accuracy in detecting plate thickness.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The sheet thickness detection mechanism includes a flipping assembly and a thickness detection assembly, wherein the flipping assembly is used to flip up the edge portion of the sheet; the thickness detection assembly includes a fixed bracket, a sliding swing arm and an angle sensor, the sliding swing arm is rotatably connected to the fixed bracket via a rotating shaft, a clamping space for clamping the sheet is formed between the sliding swing arm and the fixed bracket, and when measuring the thickness of the sheet, the sliding swing arm maintains a tendency to rotate toward the fixed bracket to clamp the sheet, the angle sensor is connected to the rotating shaft, and the angle sensor is used to measure the angle change value of the rotating shaft.

[0007] Optionally, the sliding swing arm includes a swing arm body and a roller, the swing arm body is rotatably connected to the fixed bracket via the rotating shaft, the roller is arranged at the cantilever end of the swing arm body, and the roller cooperates with the fixed bracket to form the clamping space.

[0008] Optionally, the fixing bracket includes a limiting portion, and the sheet material can abut against the limiting portion after being inserted into the clamping space, and the limiting portion is used to limit the depth of the sheet material inserted into the clamping space.

[0009] Optionally, a guide surface is formed on the fixed bracket, extending from a side away from the rotating shaft to a side close to the rotating shaft and close to the sliding swing arm, and the sheet material is guided by the guide surface to enter the clamping space.

[0010] Optionally, the flip assembly comprises a flip driving member, a flip arm and a flip grabbing member, wherein the flip driving member is used to drive the flip arm to flip, the flip grabbing member is arranged on the flip arm, and the flip grabbing member is used to grab the sheet material;

[0011] Optionally, the thickness detection assembly further includes a first detection drive member, which is disposed at an output end of the flip assembly and is used to drive the fixed bracket to move along an inclined direction of an edge of the sheet material.

[0012] Optionally, the thickness detection assembly further includes a second detection drive component, and the second detection drive component is used to drive the fixed bracket to rise and fall.

[0013] The lifting device includes a frame, a movable seat, a driving mechanism, a grasping mechanism and a sheet thickness detection mechanism as described in any of the above items, wherein the movable seat is movably connected to the frame through the driving mechanism, the driving mechanism is used to drive the movable seat to translate and lift, and the grasping mechanism and the sheet thickness detection mechanism are both arranged on the movable seat.

[0014] Optionally, the driving mechanism includes a first motor, a second motor, a first reducer and a second reducer, the first motor is connected to the first reducer, the first motor is used to drive the movable seat to translate, and the second motor is used to drive the movable seat to move up and down.

[0015] Optionally, the lifting device also includes a separating mechanism arranged on the movable seat, and the separating mechanism includes a separator, a first separating drive and a second separating drive, the first separating drive is used to drive the separator to translate, and the second separating drive is used to drive the separator to rise and fall.

[0016] Beneficial effects of the present invention: The sheet thickness detection mechanism and lifting device proposed in the present invention utilize a flipping assembly to flip the sheet so that a gap for the thickness detection assembly to be inserted can be formed between the sheet and the supporting surface where the sheet is located, and then utilize an encoder in the thickness detection assembly to monitor the angle change of the thickness detection assembly during the insertion process of the sheet, thereby achieving accurate measurement of the sheet thickness with a low error rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a hoisting device in an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 3 is a schematic structural diagram of a movable seat in an embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of a crossbeam in an embodiment of the present invention;

[0021] Figure 5 It is a structural schematic diagram of a vertical beam in an embodiment of the present invention.

[0022] In the figure:

[0023] 10. Sheet thickness detection mechanism; 11. Turnover assembly; 111. Turnover arm; 112. Turnover drive member; 113. Turnover grab member; 114. Rotating arm; 12. Thickness detection assembly; 121. Fixed bracket; 1211. Main body; 1212. Cantilever; 1213. Limiting part; 122. Sliding swing arm; 1221. Swing arm body; 1222. Roller; 123. Angle sensor; 124. First detection drive member; 125. Second detection drive member;

[0024] 20. Frame; 21. Gantry; 22. Crossbeam;

[0025] 30. Movable seat; 31. Vertical beam; 32. Mounting frame;

[0026] 40. driving mechanism; 41. first driving assembly; 411. first motor; 412. first reducer; 413. first rack; 414. mounting plate; 415. second monitoring member; 416. first stopper; 417. drag chain fixing bracket; 418. first drag chain; 419. second drag chain; 42. second driving assembly; 421. second motor; 422. second reducer; 423. second rack; 424. second gear; 425. third monitoring member; 426. second stopper;

[0027] 50. Grasping mechanism; 51. Grasping suction cup; 52. First monitoring component;

[0028] 60. Sheet separation mechanism; 61. First sheet separation driving member; 62. Second sheet separation driving member; 63. Sheet separation device;

[0029] 70. Electrical control box. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0034] refer to Figure 1-Figure 5 As shown, in this embodiment, a sheet thickness detection mechanism 10 and a lifting device are proposed. The lifting device is used to transfer the sheet from an initial position to a target position. The lifting device includes a frame 20, a movable seat 30, a driving mechanism 40, a gripping mechanism 50 and the above-mentioned sheet thickness detection mechanism 10. The gripping mechanism 50 and the sheet thickness detection mechanism 10 are both arranged on the movable seat 30. The movable seat 30 is movably arranged on the frame 20 and driven by the driving mechanism 40, thereby realizing translation or lifting relative to the frame 20. The gripping mechanism 50 is used to grip the sheet, and the sheet thickness detection mechanism 10 is used to detect the thickness of the sheet.

[0035] refer to Figure 1 and Figure 2As shown, the sheet thickness detection mechanism 10 provided in this embodiment includes a flipping component 11 and a thickness detection component 12, wherein the flipping component 11 is used to drive the edge portion of the sheet to flip up, so that a certain gap is formed between the sheet and the supporting surface where it is located. It can be understood that the supporting surface can be either the upper surface of other sheets located at the lower layer of the sheet, or the upper surface of the support seat where the sheet is located, that is, the sheets can be stacked or placed individually. The thickness detection component 12 includes a fixed bracket 121, a sliding swing arm 122 and an angle sensor 123. The sliding swing arm 122 is rotatably connected to the fixed bracket 121 through a rotating shaft. A first clamping surface is formed on the fixed bracket 121, and a second clamping surface is formed on the sliding swing arm 122. The first clamping surface and the second clamping surface together form a clamping space for clamping the sheet material. When measuring the thickness of the sheet material, the sliding swing arm 122 maintains a tendency to rotate toward the fixed bracket 121, that is, the second clamping surface maintains a tendency to move toward the first clamping surface so as to clamp the sheet material. An angle sensor 123 is connected to the rotating shaft, and the angle sensor 123 is used to measure the angle change value when the rotating shaft rotates from the starting position to the second clamping surface abutting against the sheet material.

[0036] The above-mentioned sheet thickness detection mechanism 10 and lifting device utilize the flipping assembly 11 to flip the sheet so that one end of the sheet is lifted upward, thereby enabling the fixed bracket 121 or the sliding swing arm 122 to be inserted under the sheet along the inclined direction of the edge of the sheet. Since the second clamping surface maintains a tendency to move toward the first clamping surface, the sliding swing arm 122 and the fixed bracket 121 are respectively attached to the upper and lower surfaces of the sheet. The angle sensor 123 can measure the thickness of the sheet by calculating the rotation angle of the rotating shaft, thereby reducing the probability of misjudgment in detection.

[0037] In this embodiment, the angle sensor 123 uses an encoder, which has higher accuracy than other angle sensors.

[0038] In order to keep the sliding swing arm 122 rotating toward the fixed bracket 121, the thickness detection assembly 12 further includes an elastic member (not shown in the figure), which is connected to the fixed bracket 121 and the sliding swing arm 122. Specifically, the elastic member is a tension spring, which is easier to replace than a torsion spring.

[0039] In other embodiments, the sliding swing arm 122 can also maintain the tendency to rotate toward the fixed bracket 121 by means of its own elasticity, which will not be elaborated here.

[0040] Continue to refer Figure 2As shown, the fixed bracket 121 includes a main body 1211 and a cantilever part 1212, and a first clamping surface is formed on the cantilever part 1212. Specifically, the sliding swing arm 122 is located below the cantilever part 1212. In order to reduce the difficulty of inserting the sliding swing arm 122 below the sheet, the sliding swing arm 122 includes a swing arm body 1221 and a roller 1222. The swing arm body 1221 is rotatably arranged on the main body 1211 through a rotating shaft, and the roller 1222 is arranged at the cantilever end of the swing arm body 1221. The outer peripheral surface of the roller 1222 serves as a second clamping surface, which can reduce the friction between the sliding swing arm 122 and the sheet when the sliding swing arm 122 is translated relative to the sheet. At the same time, the end of the cantilever part 1212 away from the main body 1211 is provided with a guide surface that gradually approaches the roller 1222 from the side away from the main body 1211 to the side close to the main body 1211, and the guide surface is connected to the first clamping surface to reduce the difficulty of the sheet entering the clamping space.

[0041] Obviously, the thickness of the sheet material is not only related to the rotation angle of the sliding swing arm 122, but its accuracy is also affected by whether the actual moving distance of the first detection drive member 124 is consistent with the preset distance. In order to improve the detection accuracy, the fixed bracket 121 also includes a limit portion 1213, and the limit portion 1213 is vertically connected to the cantilever portion 1212. After the sheet material is inserted into the clamping space, it can abut against the limit portion 1213, thereby achieving the limit. Specifically, the cantilever portion 1212, the main body portion 1211 and the limit portion 1213 are integrally bent and formed.

[0042] refer to Figure 3 As shown, the thickness detection assembly 12 further includes a first detection driver 124, and the fixed bracket 121 is disposed at the output end of the first detection driver 124. The first detection driver 124 is used to drive the fixed bracket 121 to move along the inclined direction of the edge of the sheet. Specifically, the first detection driver 124 is disposed at the output end of the flip assembly 11 to flip along with the sheet, so that the first clamping surface on the fixed bracket 121 remains parallel to the sheet.

[0043] Continue to refer Figure 2 As shown, the thickness detection assembly 12 further includes a second detection driver 125, which is disposed at the output end of the first detection driver 124 through a fixed end, and the fixed bracket 121 is indirectly disposed at the output end of the first detection driver 124 by being disposed at the output end of the second detection driver 125. When the hoisting device hoists the sheet material, the entire sheet material thickness detection mechanism 10 can be driven by the second detection driver 125 to be located above the sheet material, thereby reducing the occupied space on the plane where the sheet material is located and avoiding interference with other structures.

[0044] Since the driving strokes of the second detection driver 125, the first detection driver 124 and the flip driver 112 are fixed, in this embodiment, the second detection driver 125, the first detection driver 124 and the flip driver 112 are all cylinders. Of course, in other embodiments, the above-mentioned drivers can also be electric cylinders or oil cylinders.

[0045] refer to Figure 2 and Figure 3 As shown, the flip assembly 11 includes a flip driving member 112, a flip arm 111 and a flip grabbing member 113. The flip grabbing member 113 is arranged on the flip arm 111 for grabbing the sheet material. The flip driving member 112 is connected to the movable seat 30 and the flip arm 111 for driving the flip arm 111 to flip relative to the movable seat 30. The first detection driving member 124 is arranged on the flip arm 111.

[0046] Specifically, the flip gripper 113 uses a suction cup, which can flip the edge of the sheet upward by adsorbing the upper surface of the edge of the sheet, and is less difficult to operate than other gripping structures such as clamps. More specifically, the flip gripper 113 uses a vacuum suction cup, which can adsorb more types of sheets and has a wide range of applications compared to an electromagnetic suction cup.

[0047] Continue to refer Figure 2 As shown, in order to improve the stability of the sheet thickness detection mechanism 10 on the movable seat 30, the flip assembly 11 also includes a rotating arm 114, and at least two rotating arms 114 are arranged at intervals along the length direction of the flip arm 111. The flip arm 111 is connected to the movable seat 30 by rotating the rotating arm 114 connected to the movable seat 30, which improves the stability of the flip assembly 11 assembled on the movable seat 30, and the flip driving member 112 is also arranged at intervals along the length direction of the flip arm 111. Of course, when the sheet thickness detection mechanism 10 is not used in the lifting device, the flip arm 111 can also be rotatably connected to other substrates through the rotating arm 114, and the substrate can be, for example, a support seat.

[0048] refer to Figure 1 As shown, taking the case where the target position of the sheet is located on one side of the initial position of the sheet in the X-axis direction as an example, the flip arm 111 extends along the X-axis direction, and the first detection drive member 124 drives the fixed bracket 121 to move along the Y-axis direction. Of course, the first detection drive member 124 can also drive the fixed bracket 121 to move along the X-axis direction.

[0049] refer to Figure 1 , Figure 4 and Figure 5As shown, the frame 20 includes a gantry 21 and a beam 22, two gantry 21 are arranged at intervals along the X-axis direction, and the two ends of the beam 22 are respectively connected to the two gantry 21 to form the frame 20, and the driving mechanism 40 includes a first driving assembly 41 and a second driving assembly 42, wherein the first driving assembly 41 includes a first motor 411 and a first reducer 412, the first motor 411 is movably connected to the beam 22 along the X-axis direction through a mounting plate 414 slidably connected to the beam 22, the first reducer 412 is connected to the first motor 411 and is transmission-connected to the beam 22, when the first motor 411 is working, the movable seat 30 arranged on the mounting plate 414 moves along the X-axis direction under the action of the first motor 411. The second driving assembly 42 includes a second motor 421 and a second reducer 422, wherein the second motor 421 is arranged on the mounting plate 414 and moves along the X-axis direction with the mounting plate 414, and the second reducer 422 is connected to the second motor 421.

[0050] Specifically, the first motor 411 and / or the second motor 421 adopts a servo motor to improve the accuracy of the movable seat 30 moving along the X-axis and / or the Z-axis, and the first reducer 412 and / or the second reducer 422 adopts a planetary gear reducer. Compared with the integrated reduction motor, the separately arranged motor and reducer structure reduces the installation space required for the drive mechanism 40 in the X-axis direction and the Z-axis direction, which is conducive to the miniaturization and high integration of the lifting device.

[0051] In this embodiment, in order to convert the rotational motion of the first motor 411 into linear motion, the first drive assembly 41 also includes a first rack 413 and a first gear, the first rack 413 is arranged on the crossbeam 22 along the X-axis direction, and the first gear is connected to the first reducer 412 and meshes with the first rack 413. Similarly, the second drive assembly 42 also includes a second rack 423 and a second gear 424, the second rack 423 is arranged on the movable seat 30 along the Z-axis direction, and the second gear 424 is connected to the second reducer 422 and meshes with the second rack 423. In other embodiments, the first drive assembly 41 and the second drive assembly 42 can also convert the rotational motion of the first motor 411 and the second motor 421 into linear motion through a pulley transmission structure or a sprocket transmission structure, which will not be described in detail here.

[0052] The first driving assembly 41 also includes a second monitoring component 415 and a first stopper 416, wherein when the mounting plate 414 moves to the detectable range of the second monitoring component 415, the first motor 411 stops working, and two first stoppers 416 are arranged at intervals along the X-axis direction. The first stoppers 416 serve as hard limiters, and can further limit the moving stroke of the mounting plate 414 in cooperation with the second monitoring component 415, thereby improving the walking accuracy of the movable seat 30 along the X-axis. Specifically, the second monitoring component 415 adopts a photoelectric switch.

[0053] At the same time, the first driving component 41 also includes a drag chain fixing frame 417, a first drag chain 418, a second drag chain 419 and a drag chain guide plate. The drag chain guide plate is arranged on the beam 22 along the X-axis direction and is located on opposite sides of the beam 22 along the Y-axis direction with the first motor 411 to avoid interfering with the movement of the first motor 411. The first drag chain 418 is arranged on the drag chain guide plate, and the second drag chain 419 is installed on the mounting plate 414 through the drag chain fixing frame 417.

[0054] Continue to refer Figure 5 As shown, the second driving assembly 42 also includes a third monitoring member 425 and a second stopper 426. The functions of the third monitoring member 425 and the second stopper 426 are similar to those of the second monitoring member 415 and the first stopper 416, and are both for providing the precision of the movable seat 30 moving along the Z-axis direction, which will not be described in detail here. The third monitoring member 425 can also be a photoelectric switch.

[0055] refer to Figure 1 , Figure 3 , Figure 5 As shown, the movable seat 30 includes a vertical beam 31 and a mounting frame 32, wherein the vertical beam 31 is slidably set on the mounting plate 414 along the Z-axis direction, the second rack 423 is set on the vertical beam 31, the mounting frame 32 is set at the bottom of the vertical beam 31, and the mounting frame 32 is consistent with the shape of the sheet material. For example, the sheet material is a rectangular sheet material, and the mounting frame 32 is also set to a rectangular shape. The gripping mechanism 50 and the sheet material thickness detection mechanism 10 are both set on the mounting frame 32.

[0056] refer to Figure 3 As shown, the gripping mechanism 50 includes a plurality of gripping suction cups 51 arranged at the bottom of the mounting frame 32, and the plurality of gripping suction cups 51 are distributed in an array on the mounting frame 32, so that the gripping mechanism 50 can maintain the same clamping force on each part of the sheet material, thereby improving the gripping stability of the sheet material. More specifically, the position of the gripping suction cup 51 on the mounting frame 32 is adjustable, so as to adjust the position of the gripping suction cup 51 according to the size of the sheet material, and the gripping suction cup 51 is a vacuum suction cup, and the gripping mechanism 50 also includes a vacuum pump connected to the vacuum suction cup. In order to reduce the manufacturing cost of the lifting device, the vacuum suction cup as the flip gripping member 113 in the sheet material thickness detection mechanism 10 is also connected to the vacuum pump. In addition, the gripping mechanism 50 also includes a first monitoring member 52 that is communicatively connected to the vacuum pump, and the first monitoring member 52 is used to monitor the distance between the movable seat 30 and the sheet material in the Z-axis direction, so as to start the vacuum pump in time. The first monitoring member 52 can also be, but is not limited to, a proximity switch. Specifically, the first monitoring member 52 is slidably arranged on the mounting frame 32 along the Z-axis direction.

[0057] Based on the premise that the sheets are stacked up and down, in order to better separate adjacent sheets, the lifting device also includes a separating mechanism 60, which includes a separator 63, a first separator driving member 61 and a second separator driving member 62. The first separator driving member 61 is arranged on the mounting frame 32, and is used to drive the separator 63 to move along the X-axis direction or the Y-axis direction to the edge of the sheet. The second separator driving member 62 is arranged at the output end of the first separator driving member 61, and is used to drive the separator 63 to move along the Z-axis to fit with the edge of the sheet. The separator 63 is arranged at the output end of the second separator driving member 62, and is used to separate the sheets. The separator 63 belongs to the prior art and will not be described in detail here.

[0058] At the same time, the lifting device also includes an electric control box 70 arranged on the movable seat 30, and the electric control box 70 is communicatively connected with the driving mechanism 40, the sheet separation mechanism 60, the gripping mechanism 50 and the sheet thickness detection mechanism 10 to control the actions of the above functional mechanisms.

[0059] When the sheet material is transferred using the above-mentioned lifting device, the first driving component 41 transfers the movable seat 30 to the initial position where the sheet material is located, the second driving component drives the movable seat 30 to descend and uses the grasping mechanism 50 to grasp the sheet material, and the first monitoring component 52 is used to judge the distance between the movable seat 30 and the uppermost layer of the sheet material, and the grasping suction cup 51 is used to absorb the sheet material in time, the first sheet separation driving component 61 and the second sheet separation driving component 62 respectively drive the separator 63 to move, so that the separator 63 is attached to the edge of the sheet material, and the separator 63 separates the adjacent layers of sheet material, and the swing arm driving component retracts, so that the flip grabbing component 113 on the flip arm 111 drives the sheet material to flip up to a predetermined angle, and the first detection driving component 124 and the second detection driving component 125 drive the fixed bracket 121 and the sliding swing arm 122 to move, so that the fixed bracket 121 and the sliding swing arm 122 are respectively attached to the upper surface and the lower surface of the sheet material, and the angle calculation can be performed according to the angle sensor 123 to obtain the sheet material thickness. After the thickness detection is completed, the fixed bracket 121 and the sliding swing arm 122 leave the sheet material, and the flip driving member 112 extends, so that the flip grabbing member 113 on the flip arm 111 drives the sheet material to return to its original state, and the second driving assembly drives the movable seat 30 to rise to a safe height. The first driving assembly 41 transports the sheet material grasped by the grabbing suction cup 51 to the target position and descends to the discharge height to complete the discharge work.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Sheet thickness detection mechanism, characterized in that: The sheet material thickness detection mechanism (10) comprises: A turning assembly (11), wherein the turning assembly (11) is used to turn up the edge portion of the sheet material; A thickness detection component (12), the thickness detection component (12) comprising a fixed bracket (121), a sliding swing arm (122) and an angle sensor (123), the sliding swing arm (122) being rotatably connected to the fixed bracket (121) via a rotating shaft, a clamping space for clamping the sheet material is formed between the sliding swing arm (122) and the fixed bracket (121), and when measuring the thickness of the sheet material, the sliding swing arm (122) maintains a tendency to rotate toward the fixed bracket (121) to clamp the sheet material, the rotating shaft is connected to the angle sensor (123), and the angle sensor (123) is used to measure the angle change value of the rotating shaft.

2. The sheet material thickness detection mechanism according to claim 1, characterized in that: The sliding swing arm (122) comprises a swing arm body (1221) and a roller (1222); the swing arm body (1221) is rotatably connected to the fixed bracket (121) via the rotating shaft; the roller (1222) is arranged at the cantilever end of the swing arm body (1221); and the roller (1222) cooperates with the fixed bracket (121) to form the clamping space.

3. The sheet material thickness detection mechanism according to claim 1, characterized in that: The fixing bracket (121) comprises a limiting portion (1213), and the plate material can abut against the limiting portion (1213) after being inserted into the clamping space, and the limiting portion (1213) is used to limit the depth of the plate material inserted into the clamping space.

4. The sheet material thickness detection mechanism according to claim 1, characterized in that: The fixed bracket (121) is formed with a guide surface extending from a side away from the rotating shaft to a side close to the rotating shaft and close to the sliding swing arm (122), and the sheet material is guided by the guide surface into the clamping space.

5. The sheet thickness detection mechanism according to any one of claims 1 to 4, characterized in that: The flip assembly (11) comprises a flip driving member (112), a flip arm (111) and a flip grabbing member (113); the flip driving member (112) is used to drive the flip arm (111) to flip; the flip grabbing member (113) is arranged on the flip arm (111); and the flip grabbing member (113) is used to grab the sheet material.

6. The sheet material thickness detection mechanism according to any one of claims 1 to 4, characterized in that: The thickness detection component (12) further comprises a first detection drive member (124), wherein the first detection drive member (124) is arranged at the output end of the flipping component (11), and the first detection drive member (124) is used to drive the fixed bracket (121) to move along the inclined direction of the edge of the sheet material.

7. The sheet material thickness detection mechanism according to any one of claims 1 to 4, characterized in that: The thickness detection component (12) further comprises a second detection driving member (125), wherein the second detection driving member (125) is used to drive the fixed bracket (121) to rise and fall.

8. A lifting device, characterized in that: The lifting device includes a frame (20), a movable seat (30), a driving mechanism (40), a grasping mechanism (50) and a sheet thickness detection mechanism (10) as described in any one of claims 1 to 7, wherein the movable seat (30) is movably connected to the frame (20) via the driving mechanism (40), and the driving mechanism (40) is used to drive the movable seat (30) to translate and lift, and the grasping mechanism (50) and the sheet thickness detection mechanism (10) are both arranged on the movable seat (30).

9. The lifting device according to claim 8, characterized in that: The driving mechanism (40) comprises a first motor (411), a second motor (421), a first reducer (412) and a second reducer (422); the first motor (411) is connected to the first reducer (412); the first motor (411) is used to drive the movable seat (30) to translate; and the second motor (421) is used to drive the movable seat (30) to move up and down.

10. The lifting device according to any one of claims 8 to 9, characterized in that: The lifting device also includes a spreading mechanism (60) arranged on the movable seat (30), and the spreading mechanism (60) includes a spreader (63), a first spreading drive member (61) and a second spreading drive member (62), wherein the first spreading drive member (61) is used to drive the spreader (63) to move in translation, and the second spreading drive member (62) is used to drive the spreader (63) to move up and down.

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