Clamping mechanism, feeding and discharging device and PCB detection equipment

Abstract

The utility model belongs to the technical field of PCB processing, and particularly relates to a clamping mechanism, a feeding and discharging device and PCB detection equipment. The clamping mechanism comprises a lifting assembly, a first driving part, a first clamping jaw assembly, a second driving part and a second clamping jaw assembly, the output end of the first driving part is connected with the first clamping jaw assembly, the second driving part is installed on the first clamping jaw assembly, and the output end of the second driving part is connected with the second clamping jaw assembly; when the first driving part drives the first clamping jaw assembly to clamp a target tray, the second clamping jaw assembly is driven to clamp the target tray; the second driving piece can drive the second clamping jaw assembly to move in the first direction and drive the target tray to be separated from the tray below the target tray, clamping of the first clamping jaw assembly on the target tray is not affected, the target tray is separated from the tray below the target tray, single clamping of the target tray can be achieved, and the tray below the target tray is prevented from being taken up.

Description

Technical Field

[0001] The utility model belongs to the technical field of PCB board processing, and particularly relates to a clamping mechanism, a loading and unloading device and a PCB detection device. Background Art

[0002] At present, a plurality of suction cups are arranged on the existing clamping mechanism. After the suction cups adsorb the tray, the tray is transferred to a specified position.

[0003] However, there is a risk of lifting the next tray when using the suction cup to suck the tray, and the lifted tray may be damaged when it falls. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: aiming at the problem that the existing clamping mechanism will lift the next tray when using the suction cup to suck the tray, a clamping mechanism, a loading and unloading device and a PCB detection device are provided.

[0005] To solve the above technical problem, on the one hand, an embodiment of the utility model provides a clamping mechanism, which includes a lifting assembly, a first driving member, a first jaw assembly, a second driving member and a second jaw assembly. The first driving member is installed on the lifting assembly, the output end of the first driving member is connected to the first jaw assembly, the second driving member is installed on the first jaw assembly, and the output end of the second driving member is connected to the second jaw assembly;

[0006] The first driving member drives the first jaw assembly to clamp the target tray and can drive the second jaw assembly to clamp on the target tray; the second driving member can drive the second jaw assembly to move along a first direction and drive the target tray to separate from the tray below it;

[0007] When the lifting assembly drives the first jaw assembly and the second jaw assembly to move up and down and drives the target tray to be transferred to a preset position, the second driving member can drive the second jaw assembly to move along a second direction so that the target tray abuts against the first jaw assembly; the first direction and the second direction are opposite.

[0008] Optionally, the first jaw assembly includes a connecting member and a plurality of hook claws, and the plurality of hook claws are arranged on the connecting member at intervals;

[0009] The second driving member is installed on the connecting member, and the hook claws are used for being inserted into the target tray.

[0010] Optionally, a plurality of the second driving members are provided, the second jaw assembly includes a plurality of jaws, and the plurality of second driving members and the plurality of jaws are arranged in one-to-one correspondence; the jaws are used for being inserted into the target tray.

[0011] Optionally, the connecting member includes a first connecting plate and a second connecting plate which are oppositely arranged, the claw includes a first claw portion and a second claw portion, the first claw portion is arranged on the first connecting plate, the second claw portion is arranged on the second connecting plate, and the first claw portion and the second claw portion are used for clamping on opposite sides of the target tray.

[0012] Optionally, a part of the second driving member is installed on the first connecting plate, and the remaining part of the second driving member is installed on the second connecting plate.

[0013] Optionally, the first driving member includes a first air cylinder and a second air cylinder. The output end of the first air cylinder is connected to the first connecting plate, and the output end of the second air cylinder is connected to the second connecting plate. The direction in which the first air cylinder drives the first connecting plate to move is opposite to the direction in which the second air cylinder drives the second connecting plate to move, so that the first jaw assembly clamps or releases the target tray.

[0014] Optionally, it further includes a tray sensor. A transfer member is arranged on the connecting member, and the tray sensor is installed on the transfer member. The tray sensor is used to detect whether the first jaw assembly clamps the target tray.

[0015] Optionally, the lifting assembly includes a third driving member and a lifting mounting seat. The output end of the third driving member is connected to the lifting mounting seat, and the first driving member is arranged on the lifting mounting seat;

[0016] The third driving member can drive the first jaw assembly and the second jaw assembly to reciprocate up and down through the lifting mounting seat.

[0017] Optionally, the lifting mounting seat includes a first mounting plate, a second mounting plate, and a guide rod connected between the first mounting plate and the second mounting plate. The first mounting plate is connected to the output end of the third driving member, and the first driving member is installed on the second mounting plate.

[0018] Optionally, one end of the guide rod is fixedly connected to the first mounting plate, and the other end of the guide rod is movably connected to the second mounting plate.

[0019] Optionally, a through hole is provided on the second mounting plate, and the end of the guide rod away from the first mounting plate is in clearance fit with the through hole.

[0020] On the other hand, an embodiment of the present invention provides a loading and unloading device, including a frame, a translation mechanism, and the clamping mechanism as described above. The clamping mechanism is installed on the translation mechanism;

[0021] The rack is provided with a loading position, a loading empty position, a discharging position and a discharging empty position, and the translation mechanism can drive the clamping mechanism to reciprocate between the loading position and the loading empty position and reciprocate between the discharging position and the discharging empty position.

[0022] On the other hand, an embodiment of the present invention provides a PCB detection device, including a detection mechanism and the loading and unloading device as described above; the detection mechanism is used to detect the material board loaded on the target tray.

[0023] The clamping mechanism provided by the embodiment of the present invention, by setting the first clamping jaw assembly and the second clamping jaw assembly to be independent of each other, and arranging the second clamping jaw assembly and the second driving member on the first clamping jaw assembly, when the first driving member drives the first clamping jaw assembly to clamp the target tray, the second clamping jaw assembly can also move to the position of clamping the target tray. At this time, when the second driving member drives the second clamping jaw assembly to move relative to the first clamping jaw assembly in the first direction, it will not affect the clamping of the target tray by the first clamping jaw assembly. When the second clamping jaw assembly can drive the target tray to move in the first direction, the target tray is separated from the tray below it, and the single clamping of the target tray can be realized, avoiding lifting the tray below the target tray. Description of the Drawings

[0024] Figure 1 is a schematic diagram of the clamping mechanism provided by an embodiment of the present invention when clamping the tray;

[0025] Figure 2 is a schematic diagram of the clamping mechanism provided by an embodiment of the present invention;

[0026] Figure 3 is a top view schematic diagram of the clamping mechanism provided by an embodiment of the present invention.

[0027] The reference numerals in the specification are as follows:

[0028] 1. Lifting assembly; 11. Third driving member; 12. Lifting mounting seat; 121. First mounting plate; 122. Second mounting plate; 123. Guide rod;

[0029] 2. First driving member; 21. First cylinder; 22. Second cylinder;

[0030] 3. Second driving member;

[0031] 4. First clamping jaw assembly; 41. Connecting member; 41a. First connecting plate; 41b. Second connecting plate; 42. Hook; 42a. First hook portion; 42b. Second hook portion; 421. First vertical portion; 422. First horizontal portion;

[0032] 5. Second jaw assembly; 51. Jaw; 511. Second vertical part; 512. Second horizontal part;

[0033] 6. Tray sensor; 61. First sensor; 62. Second sensor;

[0034] 7. Adapter;

[0035] 8. Target tray; 81. Groove;

[0036] a. First direction; b. Second direction. Detailed implementation manner

[0037] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0038] As Figures 1 to 3 shown, a clamping mechanism provided by an embodiment of the present utility model includes a lifting assembly 1, a first driving member 2, a first jaw assembly 4, a second driving member 3 and a second jaw assembly 5. The first driving member 2 is installed on the lifting assembly 1, the output end of the first driving member 2 is connected to the first jaw assembly 4, the second driving member 3 is installed on the first jaw assembly 4, and the output end of the second driving member 3 is connected to the second jaw assembly 5. In this way, when the first driving member 2 drives the first jaw assembly 4 to move, the second driving member 3 and the second jaw assembly 5 connected to the output end of the second driving member 3 will move together with the first jaw assembly 4. When the lifting assembly 1 drives the first driving member 2 to move, the first jaw assembly 4 and the second jaw assembly 5 move together and drive the tray to move.

[0039] When the first driving member 2 drives the first jaw assembly 4 to clamp the target tray 8, it can drive the second jaw assembly 5 to clamp the target tray 8 together, and the first jaw assembly 4 and the second jaw assembly 5 independently clamp the target tray 8 respectively. The second driving member 3 can drive the second jaw assembly 5 to move along the first direction and drive the target tray 8 to separate from the tray below it. At this time, the first jaw assembly 4 remains stationary, which can avoid the adhesion between the target tray 8 and the tray below it when clamping the target tray 8.

[0040] When the lifting assembly 1 drives the first jaw assembly 4 and the second jaw assembly 5 to move up and down and drives the target tray 8 to transfer to a preset position, the second driving member 3 can drive the second jaw assembly 5 to move along the second direction so that the target tray 8 abuts against the first jaw assembly 4, thereby realizing the clamping of the target tray. Among them, the first direction a and the second direction b are opposite.

[0041] Trays are usually stacked layer by layer. When picking up the upper tray among two adjacent trays, it is easy to lift the lower tray. In this embodiment, by providing independent first jaw assemblies 4 and second jaw assemblies 5, and arranging the second jaw assemblies 5 and the second driving members 3 on the first jaw assemblies 4, when the first driving member 2 drives the first jaw assemblies 4 to grip the target tray 8, the second jaw assemblies 5 can also move to the position of gripping the target tray 8. At this time, when the second driving member 3 drives the second jaw assemblies 5 to move relative to the first jaw assemblies 4 in the first direction, it will not affect the gripping of the target tray 8 by the first jaw assemblies 4. When the second jaw assemblies can drive the target tray 8 to move in the first direction, the target tray 8 is separated from the tray below it, and the single gripping of the target tray 8 can be achieved, avoiding lifting the tray below the target tray 8.

[0042] After the target tray 8 is separated from the tray below it, when the lifting assembly 1 drives the target tray 8 to move up and down through the first jaw assemblies 4 and the second jaw assemblies 5, the second driving member 3 drives the second jaw assemblies 5 to move in the second direction until the target tray 8 abuts against the first jaw assemblies 4. Then, the target tray 8 is jointly gripped and received by the first jaw assemblies 4 and the second jaw assemblies 5. After reaching the preset position, the first jaw assemblies 4 and the second jaw assemblies 5 release the target tray 8, thus realizing the gripping operation of the target tray 8.

[0043] In one embodiment, as Figure 1 shown, the first direction is parallel to the vertical direction, and the first direction is the upward direction as in Figure 1 , and the second direction is the downward direction as in Figure 1 . The bottom of the tray is provided with a groove. When the trays are stacked, it is convenient for the first jaw assemblies 4 and the second jaw assemblies 5 to grip the trays through the groove.

[0044] When the first jaw assemblies 4 and the second jaw assemblies 5 jointly grip the target tray 8 driven by the first driving member 2, the first jaw assemblies 4 and the second jaw assemblies 5 are flush in the up-and-down direction. When the second driving member 3 drives the second jaw assemblies 5 to move upward, the first jaw assemblies 4 remain in their original positions, and a height difference is formed between the first jaw assemblies 4 and the second jaw assemblies. If the target tray 8 lifts the tray below it, during the upward movement of the target tray 8 and the tray below it together, the tray below will be blocked by the first jaw assemblies 4 and cannot continue to move upward, while the target tray 8 can continue to move upward driven by the second jaw assemblies 5, thereby separating the target tray 8 from the tray below it, avoiding the tray below from falling during the transfer process after being lifted and causing damage to the sheet material.

[0045] In one embodiment, as Figure 2 , Figure 3As shown, the first jaw assembly 4 includes a connecting member 41 and a plurality of hooks 42. The connecting member 41 is connected to the output end of the first driving member 2. The plurality of hooks 42 are spaced apart on the connecting member 41. The hooks 42 are used to be inserted into the grooves 81 of the target tray 8. Further, the end of the hook 42 away from the connecting member 41 is inserted into the groove 81 of the target tray 8. By means of the plurality of hooks 42, different positions of the target tray 8 can be clamped, ensuring that the target tray 8 is evenly stressed.

[0046] Wherein, the second driving member 3 is installed on the connecting member 41. Thus, when the first driving member 2 drives the connecting member 41 and the plurality of hooks 42 to move, the second driving member 3 and the second jaw assembly 5 connected thereto will move together with the connecting member 41, so that the second jaw assembly 5 moves to the position for clamping the target tray 8.

[0047] In one embodiment, as Figure 1 、 Figure 2 shown, there are a plurality of second driving members 3. The second jaw assembly 5 includes a plurality of jaws 51. The plurality of second driving members 3 and the plurality of jaws 51 are arranged in one-to-one correspondence. The jaws 51 are used to be inserted into the grooves 81 at the bottom of the target tray 8. Further, the end of the jaw 51 away from the second driving member 3 is inserted into the groove 81 of the target tray 8. By means of the plurality of jaws 51, different positions of the target tray 8 can be clamped. When the second driving member 3 drives the second jaw assembly 5 to move relative to the first jaw assembly 4 in the first direction or the second direction, the plurality of jaws 51 can ensure that the target tray 8 is evenly stressed.

[0048] In a preferred embodiment, the number of the jaws 51 is the same as the number of the hooks 42. Each hook 42 and the corresponding jaw 51 form a group. Each group of hooks 42 and jaws 51 is inserted into the same groove of the target tray 8. In this way, when the plurality of hooks 42 and the plurality of jaws 51 jointly support the target tray 8 and when the plurality of jaws 51 separately support the target tray 8, the stability of the target tray 8 can be ensured.

[0049] In one embodiment, the second driving member 3 includes but is not limited to a motor and a cylinder. Preferably, the second driving member 3 is a cylinder. The telescopic end of each cylinder is connected to the corresponding jaw 51, driving the jaw 51 to move up and down. And the driving structure of the cylinder is simpler, facilitating the installation of the second driving member 3 on the connecting member 41.

[0050] In one embodiment, as Figure 2As shown, the claw 42 has a first vertical portion 421 and a first horizontal portion 422. One end of the first vertical portion 421 is mounted on the connecting member 41, and the other end of the first vertical portion 421 is connected to the first horizontal portion 422. The first horizontal portion 422 can be inserted into the groove 81 of the target tray 8. Thus, when the claw 42 abuts against the target tray 8, driven by the lifting assembly 1, the clamping jaw 51 and the claw 42 jointly drive the target tray 8 to move up and down.

[0051] The clamping jaw 51 has a second vertical portion 511 and a second horizontal portion 512. The second vertical portion 511 is connected between the second horizontal portion 512 and the output end of the second driving member 3. The second horizontal portion 512 can be inserted into the groove 81 of the target tray 8. In this way, when the second driving member 3 drives the clamping jaw 51 to move up and down, the clamping jaw 51 can drive the target tray 8 to move up and down.

[0052] In one embodiment, as Figure 3 shown, the connecting member 41 includes a first connecting plate 41a and a second connecting plate 41b arranged opposite to each other. The claw 42 includes a first hook portion 42a and a second hook portion 42b. The first hook portion 42a is arranged on the first connecting plate 41a, and all the first hook portions 42a are spaced apart on the first connecting plate 41a. The second hook portion 42b is arranged on the second connecting plate 41b, and all the second hook portions 42b are spaced apart on the second connecting plate 41b. The first hook portion 42a and the second hook portion 42b are used for clamping on the opposite sides of the target tray 8, and the clamping of the target tray 8 is realized through the first hook portion 42a and the second hook portion 42b.

[0053] Preferably, among the multiple claws 42, the number of the first hook portions 42a is the same as that of the second hook portions 42b.

[0054] In a specific embodiment, there are two first hook portions 42a and two second hook portions 42b, and the first hook portions 42a and the second hook portions 42b are symmetrically arranged, which can further ensure the stable clamping of the target tray 8.

[0055] In one embodiment, a part of the second driving members 3 are mounted on the first connecting plate 41a, and the remaining second driving members 3 are mounted on the second connecting plate 41b. Among the multiple clamping jaws 51, a part of the clamping jaws 51 clamp on one side of the target tray 8, and the remaining clamping jaws 51 clamp on the other side of the target tray 8, so that the second clamping jaw assembly 5 can clamp the target tray 8.

[0056] In a specific embodiment, there are four clamping jaws 51. Two of them are arranged on one side of the target tray 8 and are arranged in one-to-one correspondence with the two first hook portions 42a. The remaining two clamping jaws 51 clamp on the other side of the target tray 8 and are arranged in one-to-one correspondence with the two second hook portions 42b.

[0057] In one embodiment, if Figure 1 , Figure 2 As shown, the first driving member 2 includes a first cylinder 21 and a second cylinder 22, the output end of the first cylinder 21 is connected to the first connecting plate 41a, the first cylinder 21 can drive the first connecting plate 41a to move, the output end of the second cylinder 22 is connected to the second connecting plate 41b, the second cylinder 22 can drive the second connecting plate 41b to move, the direction in which the first cylinder 21 drives the first connecting plate 41a to move is opposite to the direction in which the second cylinder 22 drives the second connecting plate 41b to move, so that the first clamping claw assembly 4 can clamp or release the target pallet 8.

[0058] The driving direction of the first cylinder 21 and the driving direction of the second cylinder 22 are colinear and perpendicular to the first direction. When the first connecting plate 41a and the second connecting plate 41b are close to each other, the first hook 42a and the second hook 42b are close to each other to clamp the target pallet 8 on opposite sides to achieve the clamping of the target pallet 8. When the first connecting plate 41a and the second connecting plate 41b are away from each other, the first hook 42a and the second hook 42b are away from each other to release the target pallet 8.

[0059] Preferably, the first cylinder 21 and the second cylinder 22 move synchronously, so that the first hook 42 a and the second hook 42 b move closer to or farther from each other synchronously, so as to ensure stable clamping or release of the target pallet 8 .

[0060] In one embodiment, if Figure 2 As shown, the clamping mechanism further includes a pallet sensor 6. An adapter 7 is provided on the connecting member 41. The pallet sensor 6 is mounted on the adapter 7. The pallet sensor 6 is used to detect whether the first clamping jaw assembly 4 is clamped on the target pallet 8. The pallet sensor 6 is fixed to the connecting member 41 through the adapter 7. When the first driving member 2 drives the first clamping jaw assembly 4 to clamp the target pallet 8, the pallet sensor 6 moves with the connecting member 41. The pallet sensor 6 can detect the position of the target pallet 8 to determine whether the first clamping jaw assembly 4 is clamped on the target pallet 8.

[0061] In one embodiment, if Figure 3 As shown, the pallet sensor 6 includes a first sensor 61 and a second sensor 62. The first sensor 61 is installed on the first connecting plate 41a, and the second sensor 62 is installed on the second connecting plate 41b. When the first connecting plate 41a and the second connecting plate 41b move toward each other, the first sensor 61 and the second sensor 62 can detect the position of the target pallet 8 to determine whether the first clamping claw assembly 4 is clamped on the target pallet 8.

[0062] In one embodiment, if Figure 1 , Figure 2As shown in the figure, the lifting assembly 1 includes a third driving member 11 and a lifting mounting seat 12. The output end of the third driving member 11 is connected to the lifting mounting seat 12. The first driving member 2 is arranged on the lifting mounting seat 12. The third driving member 11 can drive the first jaw assembly 4 and the second jaw assembly 5 to move up and down reciprocally through the lifting mounting seat 12.

[0063] After the first jaw assembly 4 and the second jaw assembly 5 clamp the target tray 8, the third driving member 11 drives the lifting mounting seat 12 to move up and down, and then can drive the target tray 8 to move up and down, so as to facilitate the transfer of the target tray 8.

[0064] Among them, the third driving member 11 is a cylinder.

[0065] In one embodiment, as Figure 2 shown, the lifting mounting seat 12 includes a first mounting plate 121, a second mounting plate 122 and a guide rod 123 connected between the first mounting plate 121 and the second mounting plate 122. The first mounting plate 121 is connected to the output end of the third driving member 11. The first driving member 2 is mounted on the second mounting plate 122, that is, the first cylinder 21 and the second cylinder 22 are mounted on the second mounting plate 122. In this way, when the third driving member 11 drives the lifting mounting seat 12 to move, the first cylinder 21 and the second cylinder 22 move up and down with the lifting mounting seat 12, and the first connecting plate 41a of the first cylinder 21 and the second connecting plate 41b connected to the second cylinder 22 will also move with the lifting mounting seat 12, so that the first driving member 2, the second driving member 3, the first jaw assembly 4 and the second jaw assembly 5 move up and down as a whole, realizing the clamping and transfer of the target tray 8 in the loading and unloading device.

[0066] In one embodiment, as Figure 2 shown, one end of the guide rod 123 is fixedly connected to the first mounting plate 121, and the other end of the guide rod 123 is movably connected to the second mounting plate 122, so that the second mounting plate 122 can move relative to the guide rod 123. The guide rod 123 can guide the movement of the second mounting plate 122, and the second mounting plate 122 can float up and down to avoid rigid collision when the first jaw assembly 4 and the second jaw assembly 5 release the target tray 8 after reaching the preset position.

[0067] In one embodiment, a through hole is provided on the second mounting plate 122, and the end of the guide rod 123 away from the first mounting plate 121 is in clearance fit with the through hole, so that the guide rod 123 can move in the through hole to realize the up and down floating of the second mounting plate 122.

[0068] On the other hand, the embodiment of the present invention provides a loading and unloading device, including a frame, a translation mechanism and the clamping mechanism of the above embodiment. The clamping mechanism is mounted on the translation mechanism, and the translation mechanism can drive the clamping mechanism to move.

[0069] The rack is provided with a loading position, a loading empty position, a discharging position and a discharging empty position. The translation mechanism can drive the clamping mechanism to reciprocate between the loading position and the loading empty position and between the discharging position and the discharging empty position. One end of the guide rod 123 away from the first mounting plate 121 is movably connected to the second mounting plate 122, preventing the first jaw assembly 4 and the second jaw assembly 5 from rigidly colliding with the rack when the target tray reaches the preset position.

[0070] Specifically, during loading, after the material plate on the tray at the loading position is taken away, the translation mechanism drives the clamping mechanism to move, and transfers the empty tray after the material plate is taken away to the loading empty position. During discharging, the translation mechanism drives the clamping mechanism to move, and transfers the discharging empty position to the discharging position, so as to place the material plate into the empty tray at the discharging position.

[0071] On the other hand, an embodiment of the present invention provides a PCB detection device, including a detection mechanism and the loading and unloading device of the above embodiment. The detection mechanism is used to detect the material plate loaded on the target tray 8.

[0072] Specifically, the material plate to be detected is arranged in the tray at the loading position. After the material plate on the tray at the loading position is taken away, the material to be detected is detected by the detection mechanism, and the detected material plate is placed into the empty tray at the discharging position.

[0073] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A clamping mechanism, characterized in that: It comprises a lifting assembly, a first driving member, a first clamping assembly, a second driving member and a second clamping assembly, wherein the first driving member is mounted on the lifting assembly, the output end of the first driving member is connected to the first clamping assembly, the second driving member is mounted on the first clamping assembly, and the output end of the second driving member is connected to the second clamping assembly; The first driving member drives the first clamping claw assembly to clamp the target pallet, and can drive the second clamping claw assembly to clamp on the target pallet; the second driving member can drive the second clamping claw assembly to move along the first direction and drive the target pallet to separate from the pallet below it; When the lifting assembly drives the first clamping assembly and the second clamping assembly to move up and down and drives the target pallet to move to a preset position, the second driving member can drive the second clamping assembly to move in a second direction so that the target pallet is against the first clamping assembly; the first direction and the second direction are opposite.

2. The clamping mechanism according to claim 1, characterized in that: The first clamping claw assembly includes a connecting member and a plurality of hook claws, and the plurality of hook claws are arranged on the connecting member at intervals; The second driving member is mounted on the connecting member, and the hook is used for plugging into the target tray.

3. The clamping mechanism according to claim 2, characterized in that: There are multiple second driving members, and the second clamping claw assembly includes multiple clamping claws. The multiple second driving members and the multiple clamping claws are arranged in a one-to-one correspondence; the clamping claws are used to be plugged into the target tray.

4. The clamping mechanism according to claim 3, characterized in that: The connecting member includes a first connecting plate and a second connecting plate arranged opposite to each other, and the hook includes a first hook portion and a second hook portion, the first hook portion is arranged on the first connecting plate, and the second hook portion is arranged on the second connecting plate, and the first hook portion and the second hook portion are used to clamp on opposite sides of the target pallet.

5. The clamping mechanism according to claim 4, characterized in that: A portion of the second driving member is mounted on the first connecting plate, and the remaining portion of the second driving member is mounted on the second connecting plate.

6. The clamping mechanism according to claim 4, characterized in that: The first driving member includes a first cylinder and a second cylinder, the output end of the first cylinder is connected to the first connecting plate, and the output end of the second cylinder is connected to the second connecting plate. The direction in which the first cylinder drives the first connecting plate to move is opposite to the direction in which the second cylinder drives the second connecting plate to move, so that the first clamping claw assembly clamps or releases the target pallet.

7. The clamping mechanism according to claim 2, characterized in that: A pallet sensor is also included. The connecting member is provided with an adapter. The pallet sensor is mounted on the adapter. The pallet sensor is used to detect whether the first clamping claw assembly is clamped on the target pallet.

8. The clamping mechanism according to any one of claims 1 to 7, characterized in that: The lifting assembly comprises a third driving member and a lifting mounting seat, the output end of the third driving member is connected to the lifting mounting seat, and the first driving member is arranged on the lifting mounting seat; The third driving member can drive the first clamping jaw assembly and the second clamping jaw assembly to reciprocate up and down through the lifting mounting seat.

9. The clamping mechanism according to claim 8, characterized in that: The lifting mounting seat includes a first mounting plate, a second mounting plate and a guide rod connected between the first mounting plate and the second mounting plate, the first mounting plate is connected to the output end of the third driving member, and the first driving member is mounted on the second mounting plate.

10. The clamping mechanism according to claim 9, characterized in that: One end of the guide rod is fixedly connected to the first mounting plate, and the other end of the guide rod is movably connected to the second mounting plate.

11. The clamping mechanism according to claim 9, characterized in that: The second mounting plate is provided with a through hole, and one end of the guide rod away from the first mounting plate is loosely fitted in the through hole.

12. A loading and unloading device, characterized in that: It comprises a frame, a translation mechanism and the clamping mechanism according to any one of claims 1 to 11, wherein the clamping mechanism is mounted on the translation mechanism; The frame is provided with a loading position, a loading empty position, a unloading position and an unloading empty position, and the translation mechanism can drive the clamping mechanism to reciprocate between the loading position and the loading empty position and to reciprocate between the unloading position and the unloading empty position.

13. A PCB testing device, characterized in that: It comprises a detection mechanism and the loading and unloading device as described in claim 12; the detection mechanism is used to detect the material plates loaded on the target pallet.

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