A detection device for detecting the plane of a board

Abstract

The application discloses a kind of detection equipment for plate flat detection, belong to plate detection technical field.The detection equipment includes rack, moving frame, lifting frame, fitting detection module, clamping element and drive module.Rack extends along front and back direction and is used to support plate, moving frame is set to move back and forth relative to rack, lifting frame is set to move up and down relative to moving frame, fitting detection module is set on lifting frame and is located directly above plate.Clamping element is set to two and is respectively arranged in the left and right sides of rack, can reciprocate relative to rack along left and right direction.Two drive modules are set and are respectively set in the left and right sides of moving frame, each drive module is respectively connected with the clamping element and lifting frame on the same side transmission.Drive module drives clamping element to move to clamping position, while driving lifting frame to move downward, drive clamping element to move to separation position, while driving lifting frame to move upward.The application realizes the linkage cooperation of clamping fixation and detection module lifting by same drive module, while ensuring plate detection precision, it is convenient for plate to take and place, with Compact structure, the characteristics of convenient operation.

Description

Technical Field

[0001] This invention relates to the field of furniture production testing equipment technology, and in particular to a testing device for testing the flatness of board materials. Background Technology

[0002] Currently, in the office furniture manufacturing industry, large-sized panels such as desks require flatness testing before leaving the factory to ensure subsequent assembly quality and user experience. Existing testing methods mostly employ manual or semi-automatic equipment, typically placing the panel directly on the support surface of the testing machine, followed by a testing module moving over the panel to collect flatness data. However, the aforementioned existing technologies have at least two shortcomings: On the one hand, the board lacks effective positioning and clamping methods during the inspection process. Due to the large size and heavy weight of the board, and the possible residual stress on the surface, the board is prone to slight displacement or local warping deformation during the inspection process when it is supported only by the supporting surface without clamping force. This problem is more prominent when it is affected by the contact pressure of the inspection module or the inertia of the moving frame, resulting in inconsistent inspection benchmarks and seriously affecting the accuracy and repeatability of flatness data.

[0003] On the other hand, the relative positional relationship between the existing equipment's detection module and the sheet material is fixed, lacking a collision avoidance mechanism. During sheet material loading and unloading, because the detection module is usually suspended directly above the sheet material and at a low position, operators must carefully avoid the detection module to complete the loading and unloading operations. This not only reduces detection efficiency but also increases the risk of damage to the detection module from accidental collisions, and also adversely affects operational safety. Although some equipment uses manual lifting of the detection module to make room for operation, this operation requires an extra step and cannot be coordinated with the clamping or releasing of the sheet material, making it difficult to balance detection accuracy and operational convenience.

[0004] To address the aforementioned issues, how to reliably clamp and fix the sheet material during testing to ensure testing accuracy, while automatically raising and avoiding interference when the sheet material is picked up or placed, and simplifying the operation process, are technical challenges that urgently need to be solved in this field. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a detection device for flatness inspection of sheet metal.

[0006] One embodiment of the present invention provides a technical solution to solve its technical problem: a testing device for inspecting the flatness of sheet metal, comprising: The frame extends longitudinally in the front-to-back direction and is used to support the sheet metal; A movable frame is mounted on the frame and can reciprocate relative to the frame in the front-rear direction; A lifting frame is installed on the movable frame and can reciprocate up and down relative to the movable frame in the vertical direction; A bonding detection module is disposed on the lifting frame and located directly above the plate. At least a portion of the bonding detection module can descend to bond with the upper surface of the plate. Two clamping elements are provided, respectively arranged on the left and right sides of the frame, and each clamping element is capable of reciprocating relative to the frame in the left-right direction; and Two drive modules are configured, one on the left and one on the right side of the movable frame, and each drive module is connected to the clamping element and the lifting frame on the same side. The drive module is configured to drive the clamping element to switch between a clamping position and a disengaged position. When the drive module drives the clamping element to move towards the clamping position, the drive module simultaneously drives the lifting frame to move downward; when the drive module drives the clamping element to move towards the separation position, the drive module simultaneously drives the lifting frame to move upward.

[0007] Preferably, the drive module includes a linear driver and a moving block, wherein the linear driver is fixedly mounted on the moving frame; The moving block is connected to the moving end of the linear actuator, and the moving block can reciprocate relative to the moving frame in the left-right direction; The movable block is fixedly connected to the clamping element; The moving block has a driving ramp on the side facing the lifting frame, and the lifting frame has a mating ramp on the side facing the driving ramp.

[0008] Preferably, the left and right sides of the mobile frame are respectively provided with a first guide channel running through the vertical direction, and the left and right sides of the mobile frame are also respectively provided with a second guide channel running through the horizontal direction; the second guide channel is connected to the first guide channel. The left and right sides of the lifting frame are movably inserted into the first guide channel; the lifting frame is provided with a third guide channel that runs through the left and right sides at the position corresponding to the second guide channel; The movable block moves in the left-right direction and is inserted into the second guide channel and the third guide channel.

[0009] Preferably, the mating inclined surface is disposed on the upper wall of the third guide channel.

[0010] Preferably, the left and right sides of the movable frame are respectively provided with elastic components for driving the lifting frame to move downward.

[0011] Preferably, the elastic component includes a guide post fixedly mounted on the movable frame, a guide seat mounted on the lifting frame, and a first spring; The guide seat is slidably disposed on the guide post, the first spring is sleeved on the guide post, and one end of the first spring is fixedly connected to the movable frame, and the other end is fixedly connected to the guide seat.

[0012] Preferably, a limit nut is fixedly connected to the lower end of the guide post.

[0013] Preferably, the bonding detection module includes a fixing frame and multiple sets of detection components; The fixing frame is fixedly mounted on the lifting frame; Multiple sets of the detection components are arranged in a left-right direction below the fixing frame and connected to the fixing frame. The detection components are used to fit against the upper surface of the plate for detection.

[0014] Preferably, the detection assembly includes a movable detection seat, which is equipped with pulleys for fitting against the plate. The movable detection seat is provided with a plurality of upwardly extending connecting rods. The fixing frame is provided with insertion holes at the positions corresponding to the connecting rods. The upper end of the connecting rod passes through the insertion hole and extends upward. The upper end of the connecting rod is fixedly connected to a limiting member. A second spring is sleeved on the connecting rod between the fixing frame and the movable detection seat. A sensing element is installed on the upper surface of the movable detection base, and a laser rangefinder sensor is fixedly installed on the fixed frame directly above the sensing element.

[0015] Preferably, the frame includes a frame, and multiple conveying rollers are arranged in the frame along the front-to-back direction. Slide rails are respectively provided on the left and right sides of the frame, and the movable frame is slidably connected to the slide rails.

[0016] Compared with existing technologies, this invention connects the drive module to the clamping element and the lifting frame respectively. When the drive module moves the clamping element to the clamping position, it simultaneously moves the lifting frame and the bonding detection module downwards to the surface of the board for bonding detection. Conversely, when the drive module moves the clamping element to the separation position, it simultaneously moves the lifting frame and the bonding detection module upwards. This achieves coordinated operation of the clamping and lifting actions of the detection module with a single drive module. During detection, the clamping elements on both sides apply reliable clamping force to the board to effectively suppress board displacement and warping, ensuring the consistency of the detection benchmark and the accuracy of flatness data. Furthermore, during board removal and placement, the bonding detection module is automatically raised to create sufficient clearance, avoiding the extra steps of manual lifting and the risk of accidental collisions to the detection module. Compared to the traditional approach of setting separate clamping and lifting drive mechanisms, this invention significantly reduces the number of drive elements, simplifies the transmission structure, and lowers manufacturing costs and failure rates. While ensuring detection accuracy, it achieves automatic coordination of the clamping, detection, and clearance processes, resulting in significant operational convenience, detection reliability, and economic benefits. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is one of the cross-sectional structural schematic diagrams of the present invention.

[0019] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0020] Figure 4 This is the second cross-sectional structural schematic diagram of the present invention.

[0021] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0022] Figure 6 for Figure 4 Enlarged structural diagram at point B.

[0023] Figure 7 This is a schematic diagram of the lifting frame and drive module in a disassembled state.

[0024] Figure 8 This is a schematic diagram of the structure of the bonding detection module. Detailed Implementation

[0025] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0026] In the description of this invention, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 limiting this invention.

[0028] In this invention, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integrally formed connection; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0029] like Figures 1 to 8 As shown, this invention provides a testing device for flatness inspection of sheet materials, mainly used for automated inspection of the flatness of large-sized sheet materials such as desks. The testing device includes a frame 10, a moving frame 20, a lifting frame 30, a bonding inspection module 40, clamping elements 50, and a drive module 60.

[0030] The frame 10 extends longitudinally in the front-to-back direction and is used to support the plate 80 to be inspected. The frame 10 includes a frame 110, within which multiple conveyor rollers 120 are arranged in the front-to-back direction. The conveyor rollers 120 are used to carry the plate 80 and convey it to the inspection station in the front-to-back direction. Slide rails 130 are respectively provided on the left and right sides of the frame 110, extending in the front-to-back direction. The movable frame 20 is slidably connected to the slide rails 130, allowing the movable frame 20 to reciprocate relative to the frame 10 in the front-to-back direction. The movable frame 20 is mounted on the frame 10 and can reciprocate relative to the frame 10 in the front-to-back direction. The movement of the movable frame 20 can be driven by an independent drive mechanism or manually pushed by an operator. In this embodiment, the movable frame 20 is driven by a drive motor through a screw transmission mechanism to achieve step-by-step movement in the automated inspection process.

[0031] The lifting frame 30 is mounted on the movable frame 20 and can reciprocate up and down relative to the movable frame 20 in the vertical direction. The movable frame 20 has first guide channels 220 extending vertically on its left and right sides, and the left and right sides of the lifting frame 30 are movably inserted into the first guide channels 220. The first guide channels 220 provide guidance for the lifting movement of the lifting frame 30, ensuring that the lifting frame 30 remains stable during vertical movement and does not sway left or right. The movable frame 20 also has second guide channels 210 extending horizontally on its left and right sides, which are interconnected with the first guide channels 220. The lifting frame 30 has a third guide channel 310 extending horizontally at the position corresponding to the second guide channel 210. When the lifting frame 30 is inserted into the first guide channel 220, the third guide channel 310 corresponds to the position of the second guide channel 210, and together they form a channel through which the movable block 620 passes.

[0032] The bonding detection module 40 is mounted on the lifting frame 30 and located directly above the board 80. At least a portion of the bonding detection module 40 can descend to bond with the upper surface of the board 80. The bonding detection module 40 is used to contact the upper surface of the board 80 during detection to collect flatness data of the board 80 surface. The bonding detection module 40 moves up and down through the lifting motion of the lifting frame 30. When the lifting frame 30 moves downward, the bonding detection module 40 moves downward to bond with the upper surface of the board 80. When the lifting frame 30 moves upward, the bonding detection module 40 moves upward to detach from the upper surface of the board 80.

[0033] Two clamping elements 50 are provided, respectively arranged on the left and right sides of the frame 10, and each clamping element 50 can reciprocate relative to the frame 10 in the left-right direction. The clamping elements 50 are used to apply clamping force to the plate 80 from the left and right sides during inspection to fix the plate 80 on the frame 10 and prevent the plate 80 from shifting or warping during inspection. The inner side of the clamping element 50 is provided with a clamping surface, which is adapted to the side of the plate 80 to provide a stable clamping effect.

[0034] Two drive modules 60 are configured, one on the left and one on the right of the movable frame 20, respectively. Each drive module 60 is connected to the clamping element 50 and the lifting frame 30 on the same side. The drive modules 60 are configured to drive the clamping element 50 to switch between a clamping position and a disengaging position. When the drive module 60 drives the clamping element 50 to the clamping position, the drive module 60 simultaneously drives the lifting frame 30 to move downward, so that the clamping element 50 clamps the plate 80 from both sides while the bonding detection module 40 simultaneously descends to bond with the upper surface of the plate 80. When the drive module 60 drives the clamping element 50 to the disengaging position, the drive module 60 simultaneously drives the lifting frame 30 to move upward, so that the clamping element 50 releases the plate 80 while the bonding detection module 40 simultaneously rises to detach from the upper surface of the plate 80, making room for the operator to pick up and put down the plate 80.

[0035] like Figure 2 and Figure 3As shown, the drive module 60 includes a linear actuator 610 and a moving block 620. The linear actuator 610 is fixedly mounted on the moving frame 20. In this embodiment, the linear actuator 610 is preferably a cylinder, which has the advantages of fast response speed, low cost, and easy control. Of course, the linear actuator 610 can also be a linear motor, hydraulic cylinder, or other existing linear drive devices, as long as it can output linear reciprocating motion in the left-right direction. The moving block 620 is connected to the moving end of the linear actuator 610, and the moving block 620 can reciprocate relative to the moving frame 20 in the left-right direction. Specifically, the moving block 620 is inserted into the second guide channel 210 and the third guide channel 310 in the left-right direction. The second guide channel 210 and the third guide channel 310 together provide guidance for the left-right movement of the moving block 620, ensuring that the moving block 620 can smoothly reciprocate in the left-right direction under the drive of the linear actuator 610. The movable block 620 is fixedly connected to the clamping element 50. When the movable block 620 moves in the left-right direction, the clamping element 50 moves synchronously with the movable block 620. A driving ramp 621 is provided on the side of the movable block 620 facing the lifting frame 30. The driving ramp 621 is an inclined surface that gradually slopes downwards towards the lifting frame 30. A mating ramp 320 is provided on the side of the lifting frame 30 facing the driving ramp 621. The inclination angle of the mating ramp 320 matches the inclination angle of the driving ramp 621. The mating ramp 320 is located on the upper wall of the third guide channel 310. When the movable block 620 moves in the left-right direction, the driving ramp 621 and the mating ramp 320 slide relative to each other. The wedging action of the ramp converts the left-right movement of the movable block 620 into the up-down movement of the lifting frame 30.

[0036] To further understand the linkage working principle of the drive module 60, its movement process is described in detail below. When the linear actuator 610 drives the moving block 620 to move closer to the plate 80 (i.e., inward), the clamping element 50 moves inward synchronously with the moving block 620, gradually approaching the side of the plate 80, and finally moves to the clamping position to clamp the plate 80. At the same time, the drive ramp 621 on the moving block 620 gradually moves away from the mating ramp 320, and the constraint effect of the drive ramp 621 on the lifting frame 30 gradually decreases. Under its own weight and the action of the elastic component 70, the lifting frame 30 moves downward, and the bonding detection module 40 descends synchronously with the lifting frame 30 to bond with the upper surface of the plate 80. Conversely, when the linear actuator 610 drives the moving block 620 to move away from the plate 80 (i.e., outward), the clamping element 50 moves outward synchronously with the moving block 620, gradually moving away from the side of the plate 80, and finally moves to the separation position to release the plate 80. At the same time, the drive ramp 621 on the moving block 620 gradually approaches and contacts the mating ramp 320. Through the wedge engagement of the drive ramp 621 and the mating ramp 320, the drive ramp 621 applies an upward force to the lifting frame 30, lifting the lifting frame 30 upward. The bonding detection module 40 rises synchronously with the lifting frame 30 to detach from the upper surface of the plate 80.

[0037] To achieve the downward movement and reset of the lifting frame 30, elastic components 70 for driving the lifting frame 30 downward are respectively provided on the left and right sides of the movable frame 20. The elastic components 70 include a guide post 710 fixedly mounted on the movable frame 20, a guide seat 720 mounted on the lifting frame 30, and a first spring 730. The guide post 710 is vertically arranged, and its lower end is fixedly connected to a limit nut 740. The limit nut 740 is used to limit the maximum downward stroke of the guide seat 720, preventing the guide seat 720 from dislodging from the lower end of the guide post 710. The guide seat 720 is slidably mounted on the guide post 710 and is fixedly connected to the lifting frame 30. When the lifting frame 30 moves up and down, the guide seat 720 slides synchronously along the guide post 710 with the lifting frame 30. The first spring 730 is sleeved on the guide post 710, with one end fixedly connected to the movable frame 20 and the other end fixedly connected to the guide seat 720. The first spring 730 is always in a compressed state, and its elastic force always exerts a downward pushing force on the guide seat 720, that is, a downward force on the lifting frame 30. When the driving ramp 621 moves away from the mating ramp 320, the elastic force of the first spring 730 pushes the guide seat 720 downward, thereby causing the lifting frame 30 to move downward and reset. When the driving ramp 621 approaches and contacts the mating ramp 320, the driving ramp 621 applies an upward lifting force to the lifting frame 30 through the mating ramp 320. This lifting force overcomes the elastic force of the first spring 730 and the weight of the lifting frame 30 itself, lifting the lifting frame 30 upward.

[0038] like Figure 8 As shown, the bonding detection module 40 includes a fixing frame 410 and multiple sets of detection components 420. The fixing frame 410 is fixedly mounted on the lifting frame 30 and rises and falls synchronously with the lifting frame 30. The multiple sets of detection components 420 are arranged in a left-right direction below the fixing frame 410 and connected to the fixing frame 410. The multiple sets of detection components 420 are arranged in a left-right direction, which can cover the entire width direction of the board 80, realizing the flatness detection of the entire surface of the board 80. The detection components 420 are used to bond with the upper surface of the board 80 for detection.

[0039] The specific structure of the detection assembly 420 is as follows: The detection assembly 420 includes a movable detection seat 421, on which a pulley 422 is installed for contacting the plate 80. The pulley 422 can roll in contact with the upper surface of the plate 80 to reduce frictional resistance during the detection process. Several upwardly extending connecting rods 423 are provided on the movable detection seat 421. Preferably, there are two connecting rods 423, respectively located on the left and right sides of the movable detection seat 421 to provide balanced guiding support. A mounting bracket 410 has insertion holes corresponding to the positions of the connecting rods 423. The upper end of the connecting rod 423 passes through the insertion hole and extends upward. The connecting rod 423 and the insertion hole are in a sliding fit, allowing the movable detection seat 421 to float up and down relative to the mounting bracket 410. A limiting member 425 is fixedly connected to the upper end of the connecting rod 423 to prevent the connecting rod 423 from dislodging downward from the insertion hole. A second spring 424 is sleeved on the connecting rod 423 between the fixed frame 410 and the movable detection seat 421. The second spring 424 is always in a compressed state, and its elastic force applies opposite forces to the fixed frame 410 and the movable detection seat 421 respectively. That is, it pushes the movable detection seat 421 downward so that the pulley 422 is in close contact with the upper surface of the plate 80, while pushing the fixed frame 410 upward.

[0040] A sensing element 440 is mounted on the upper surface of the movable detection base 421, and a laser rangefinder sensor 430 is fixedly mounted on the mounting bracket 410 directly above the sensing element 440. The sensing element 440 serves as the detection target of the laser rangefinder sensor 430. As the movable detection base 421 moves up and down with the unevenness of the plate 80 surface, the distance between the sensing element 440 and the laser rangefinder sensor 430 changes accordingly. By measuring the change in distance between itself and the sensing element 440, the laser rangefinder sensor 430 can accurately calculate the flatness data of the plate 80 surface. Each detection assembly 420 is equipped with a corresponding laser rangefinder sensor 430, thereby achieving multi-point synchronous detection and improving detection efficiency.

[0041] The overall working process of the present invention will be described below with reference to the accompanying drawings.

[0042] First, the sheet material 80 to be inspected is placed on the conveyor rollers 120 of the frame 10. Multiple conveyor rollers 120 are interconnected via synchronous belts and pulleys, and all conveyor rollers 120 are centrally driven by a single servo motor, thus ensuring smooth conveying of the sheet material 80. A position detection sensor, preferably a proximity switch, is installed at the inspection station to detect whether the sheet material 80 has reached the preset inspection position. When the position detection sensor detects that the sheet material 80 has been conveyed to the inspection station, the servo motor stops, and the sheet material 80 accurately stops at the inspection station. At this time, the moving frame 20 is located at the front or rear end of the frame 10, the clamping element 50 is in the separated position, the lifting frame 30 is in the raised position, and sufficient clearance is maintained between the bonding inspection module 40 and the upper surface of the sheet material 80.

[0043] Then, the drive module 60 is activated. The linear actuator 610 drives the moving block 620 to move closer to the plate 80. The moving block 620 drives the clamping element 50 to move inward, while simultaneously driving the inclined platform 621 to gradually move away from the mating inclined surface 320. The lifting frame 30 moves downward under the elastic force of the first spring 730. When the clamping element 50 moves to the clamping position, the lifting frame 30 also moves downward to the lowest position. The bonding detection module 40 then descends to bond with the upper surface of the plate 80. Each pulley 422 is pressed tightly against the upper surface of the plate 80 under the action of the second spring 424. The detection component 420 floats up and down with the unevenness of the plate 80 surface. The laser range sensor 430 collects the flatness data of each detection point in real time.

[0044] During the inspection process, the moving frame 20 moves gradually from front to back along the slide rail 130, and the contact inspection module 40 moves synchronously with the moving frame 20 to complete the scanning inspection of the entire upper surface of the board 80. Since the board 80 is firmly clamped by the clamping element 50, no displacement or warping will occur during the inspection process, ensuring the accuracy of the inspection data.

[0045] After the inspection is completed, the linear actuator 610 reverses the direction of the moving block 620 away from the plate 80. The moving block 620 drives the clamping element 50 to move outward, while the driving ramp 621 gradually approaches and contacts the mating ramp 320. Through the wedge engagement of the driving ramp 621 and the mating ramp 320, the lifting frame 30 is lifted upward. When the clamping element 50 moves to the separation position, the lifting frame 30 also rises to its highest position. The bonding inspection module 40 rises synchronously with the lifting frame 30 to detach from the upper surface of the plate 80, and sufficient clearance space is re-established between the bonding inspection module 40 and the upper surface of the plate 80. Subsequently, the servo motor restarts, and the conveyor roller 120 is driven by the synchronous belt and synchronous pulley to continue to transport the inspected plate 80 forward to the next process. At the same time, the next plate 80 to be inspected can be transported to the inspection station. This cycle is repeated to achieve continuous automated inspection operation.

[0046] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A testing device for inspecting the flatness of sheet metal, characterized in that, include: The frame (10) extends longitudinally in the front-to-back direction to support the plate (80). A movable frame (20) is mounted on the frame (10) and can reciprocate relative to the frame (10) in the front-rear direction; The lifting frame (30) is installed on the movable frame (20) and can be raised and lowered relative to the movable frame (20) in the vertical direction; A bonding detection module (40) is disposed on the lifting frame (30) and located directly above the plate (80). At least a portion of the bonding detection module (40) can descend to bond with the upper surface of the plate (80). Two clamping elements (50) are provided, respectively arranged on the left and right sides of the frame (10), and each clamping element (50) can reciprocate relative to the frame (10) in the left-right direction; and Two drive modules (60) are provided, which are respectively located on the left and right sides of the movable frame (20). Each drive module (60) is connected to the clamping element (50) and the lifting frame (30) on the same side. The drive module (60) is configured to drive the clamping element (50) to switch between a clamping position and a disengaged position; When the drive module (60) drives the clamping element (50) to move to the clamping position, the drive module (60) simultaneously drives the lifting frame (30) to move downward; when the drive module (60) drives the clamping element (50) to move to the separation position, the drive module (60) simultaneously drives the lifting frame (30) to move upward.

2. The testing equipment for flatness inspection of sheet metal according to claim 1, characterized in that, The drive module (60) includes a linear driver (610) and a moving block (620), wherein the linear driver (610) is fixedly mounted on the moving frame (20); The movable block (620) is connected to the movable end of the linear actuator (610), and the movable block (620) can reciprocate relative to the movable frame (20) in the left and right directions; The movable block (620) is fixedly connected to the clamping element (50); The moving block (620) is provided with a driving ramp (621) on the side facing the lifting frame (30), and the lifting frame (30) is provided with a mating ramp (320) on the side facing the driving ramp (621).

3. The testing equipment for flatness inspection of sheet metal according to claim 2, characterized in that, The mobile frame (20) is provided with a first guide channel (220) running vertically through the left and right sides respectively, and a second guide channel (210) running horizontally through the left and right sides respectively; the second guide channel (210) is connected to the first guide channel (220); The left and right sides of the lifting frame (30) are movably inserted into the first guide channel (220); the lifting frame (30) is provided with a third guide channel (310) that runs through the left and right sides at the position corresponding to the second guide channel (210). The movable block (620) moves in the left and right direction and is inserted into the second guide channel (210) and the third guide channel (310).

4. The testing equipment for flatness inspection of sheet metal according to claim 3, characterized in that, The mating inclined surface (320) is disposed on the upper wall of the third guide channel (310).

5. The testing equipment for flatness inspection of sheet metal according to claim 2, characterized in that, The left and right sides of the movable frame (20) are respectively provided with elastic components (70) for driving the lifting frame (30) to move downward.

6. The testing equipment for flatness inspection of sheet metal according to claim 5, characterized in that, The elastic component (70) includes a guide post (710) fixedly mounted on the movable frame (20), a guide seat (720) mounted on the lifting frame (30), and a first spring (730). The guide seat (720) is slidably disposed on the guide post (710), the first spring (730) is sleeved on the guide post (710), and one end of the first spring (730) is fixedly connected to the movable frame (20), and the other end is fixedly connected to the guide seat (720).

7. The testing equipment for flatness inspection of sheet metal according to claim 6, characterized in that, The lower end of the guide post (710) is fixedly connected to a limit nut (740).

8. The testing equipment for flatness inspection of sheet metal according to claim 1, characterized in that, The bonding detection module (40) includes a fixing frame (410) and multiple sets of detection components (420); The fixed frame (410) is fixedly mounted on the lifting frame (30); Multiple sets of the detection components (420) are arranged in the left-right direction below the fixing frame (410) and connected to the fixing frame (410). The detection components (420) are used to fit against the upper surface of the plate (80) for detection.

9. The testing equipment for flatness inspection of sheet metal according to claim 8, characterized in that, The detection assembly (420) includes a movable detection seat (421), which is equipped with pulleys (422) for contacting the plate (80). The movable detection seat (421) is provided with a plurality of upwardly extending connecting rods (423). The fixing frame (410) is provided with insertion holes at the positions corresponding to the connecting rods (423). The upper end of the connecting rod (423) passes through the insertion hole and extends upward. The upper end of the connecting rod (423) is fixedly connected to a limiting member (425). A second spring (424) is sleeved on the connecting rod (423) between the fixing frame (410) and the movable detection seat (421). A sensing element (440) is mounted on the upper surface of the movable detection base (421), and a laser range sensor (430) is fixedly mounted on the fixing frame (410) directly above the sensing element (440).

10. The testing equipment for flatness inspection of sheet metal according to claim 1, characterized in that, The frame (10) includes a frame (110), and multiple conveying rollers (120) are arranged in the frame (110) along the front-back direction. Slide rails (130) are respectively provided on the left and right sides of the frame (110), and the movable frame (20) is slidably connected to the slide rails (130).

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