Product clamping device with fool-proof function

Abstract

The utility model discloses a product clamping device with a fool-proof function. The product clamping device comprises a bearing plate, a first limiting assembly and a second limiting assembly. A clamping station is formed on the bearing plate; the first limiting assembly is arranged on the bearing plate and located at the two ends of the clamping station in the first direction, the first limiting assembly comprises a first limiting structure, and a first sensor is arranged on the first limiting structure and used for sensing whether a product is located at a preset position in the first direction or not; the second limiting assembly is arranged on the bearing plate and located at the two ends of the clamping station in the second direction, the second limiting assembly comprises a second limiting structure, and a second sensor is arranged on the second limiting structure and used for sensing whether the product is located at the preset position in the second direction or not. According to the product clamping device with the fool-proof function, whether the product is clamped to the preset position or not can be automatically recognized, wrong machining caused by position errors of the product is prevented, and the product yield is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a product clamping device with a fool-proof function. Background Art

[0002] The vise is a common tool used to fix products during processing. The vise is used to clamp products, and the operator's material placement skills are highly required during operation. When the operator does not put the product in the correct position, the vise cannot automatically recognize the abnormal placement of the product, and the CNC machine tool will still process the product according to the established procedure, which often causes errors in product processing, resulting in product scrapping and reduced yield.

[0003] Therefore, based on the disadvantages of the vise: it only has a clamping function and cannot identify the size and abnormal incoming materials; when clamping the product, it is necessary to manually rotate the screw to open or close the vise jaws, which is labor-intensive for operators and has low clamping efficiency; only one product can be clamped at a time, which has low clamping efficiency. This application proposes a product clamping device with a foolproof function.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a product clamping device with a fool-proof function, which can automatically identify whether the product is clamped to a preset position, prevent the product from being processed incorrectly due to position errors, and improve the product yield.

[0006] To achieve the above-mentioned purpose, the utility model provides a product clamping device with foolproof function, including a carrier plate, a first limit assembly and a second limit assembly. A clamping station is formed on the carrier plate; the first limit assembly is arranged on the carrier plate and located at both ends of the clamping station in the first direction, the first limit assembly includes a first limit structure, a first sensor is arranged on the first limit structure, and the first sensor is used to sense whether the product is in a preset position in the first direction; the second limit assembly is arranged on the carrier plate and located at both ends of the clamping station in the second direction, the second limit assembly includes a second limit structure, a second sensor is arranged on the second limit structure, and the second sensor is used to sense whether the product is in a preset position in the second direction, and the second direction is arranged in a different direction from the first direction.

[0007] In one or more embodiments, the product clamping device with anti-foolproof function also includes a negative pressure monitoring component, including a suction port and a negative pressure monitoring device connected to the suction port; the suction port is arranged through the carrier plate and is located within the range of the clamping station, and the negative pressure monitoring device monitors whether the product is in a preset position according to the negative pressure value generated by the suction port.

[0008] In one or more embodiments, the product clamping device with anti-foolproof function also includes a moving component, and the moving component includes a moving structure movably arranged on the supporting plate, and the moving structure is arranged at the other end of the clamping station relative to the first limiting structure in the first direction, and the moving structure can move relative to the clamping station to hold the product against the first limiting structure.

[0009] In one or more embodiments, the moving component includes a driving structure; the moving structure has a first end and a second end relative to each other, a supporting surface is formed on the first end, and the second end is connected to the driving structure, and the moving structure is axially connected to the supporting plate so that under the action of the driving structure, the supporting surface of the moving structure can be relatively close to or away from the clamping station.

[0010] In one or more embodiments, the first limiting structure has a first limiting surface disposed facing the clamping station, and the first sensor is disposed inside the first limiting structure and exposed to the first limiting surface.

[0011] In one or more embodiments, the first limiting assembly further includes a third limiting structure and a fourth limiting structure, wherein the third limiting structure and the fourth limiting structure are respectively arranged at two ends of the clamping station in the first direction, and the third limiting structure has a third limiting surface, and the third limiting surface and the first limiting surface are located in the same plane.

[0012] In one or more embodiments, the fourth limiting structure has a fourth limiting surface arranged facing the clamping station, and the vertical distance between the fourth limiting surface and the third limiting surface is greater than the length of the product in the first direction; a raised elastic portion is arranged on the fourth limiting surface, and the minimum vertical distance between the elastic portion and the third limiting surface is less than the length of the product in the first direction.

[0013] In one or more embodiments, the second limiting structure has a second limiting surface disposed facing the clamping station, and the second sensor is disposed inside the second limiting structure and exposed to the second limiting surface.

[0014] In one or more embodiments, the second limiting assembly further includes a fifth limiting structure and a sixth limiting structure, wherein the fifth limiting structure and the sixth limiting structure are respectively arranged at two ends of the clamping station in the second direction, and the fifth limiting structure has a fifth limiting surface, and the fifth limiting surface and the second limiting surface are located in the same plane.

[0015] In one or more embodiments, the sixth limiting structure has a sixth limiting surface arranged facing the clamping station, and the vertical distance between the sixth limiting surface and the fifth limiting surface is greater than the length of the product in the second direction; a raised elastic portion is arranged on the sixth limiting surface, and the minimum vertical distance between the elastic portion and the fifth limiting surface is less than the length of the product in the second direction.

[0016] In one or more embodiments, the first sensor, the second sensor and the negative pressure monitoring device are all connected to an alarm device of an external processing device.

[0017] In one or more embodiments, the product clamping device with anti-foolproof function also includes a third sensor, which can approach or move away from the clamping station in a third direction to detect the height of the product located at the clamping station, and the third direction is perpendicular to the first direction and the second direction.

[0018] In one or more embodiments, the third sensor is connected to an alarm device of an external processing device.

[0019] Compared with the prior art, the product clamping device with fool-proof function according to the utility model can automatically identify whether the product is placed in the preset position of the clamping station, prevent the product from being processed incorrectly due to position error, and improve the product yield.

[0020] According to the product clamping device with fool-proof function of the utility model, when it is detected that the product is placed incorrectly or the incoming material has abnormal product size (error in product height is detected), an alarm can be triggered and a prompt can be given to suspend processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure from the first perspective of a product clamping device with a fool-proof function according to one embodiment of the utility model.

[0022] Figure 2 It is a schematic diagram of the stereoscopic structure of a product clamping device with a fool-proof function according to an embodiment of the utility model from a second viewing angle.

[0023] Figure 3 yes Figure 2 Enlarged view of the R part.

[0024] Figure 4 It is a schematic diagram of the structure of a moving component of a product clamping device with fool-proofing function according to one embodiment of the utility model.

[0025] Figure 5 It is a detailed schematic diagram of the third limiting structure and the fifth limiting structure of the product clamping device with fool-proofing function according to one embodiment of the utility model.

[0026] Figure 6 It is a detailed schematic diagram of the fourth limiting structure and the sixth limiting structure of the product clamping device with fool-proofing function according to one embodiment of the utility model.

[0027] Figure 7 It is a structural schematic diagram of product A of a product clamping device with fool-proofing function according to one embodiment of the utility model. DETAILED DESCRIPTION

[0028] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0029] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0030] As mentioned in the background technology, existing product processing clamping fixtures, such as vises, only have clamping functions, but do not have the function of identifying the position of the product after it is placed. This will result in the CNC machine tool still processing the product according to the established procedure after the product is placed abnormally, causing errors in product processing, resulting in product scrapping and reduced yield.

[0031] In order to solve the above technical problems, the utility model provides a product clamping device with an anti-foolproof function. By arranging corresponding limit components and sensors in two directions of a two-dimensional plane, the product placement can be limited while sensing in real time whether the product is correctly placed in the preset position, thereby preventing the product from being processed incorrectly due to position errors and improving the product yield.

[0032] like Figures 1 to 3As shown, a product clamping device with foolproof function according to an embodiment of the utility model comprises: a base plate 10, a support column 20, a bearing plate 30, a first limit assembly, a second limit assembly, a moving assembly and a negative pressure monitoring assembly. The bearing plate 30 is supported on the base plate 10 by the support column 20. There is a certain space between the bearing plate 30 and the base plate 10, which can be used to install some components in the moving assembly. A clamping station B for placing product A is formed on the bearing plate 30. The first limit assembly is arranged on the bearing plate 30 and is located at both ends of the clamping station B in the first direction. The first limit assembly comprises a first limit structure 41, and a first sensor 42 is arranged on the first limit structure 41, and the first sensor 42 is used to sense whether the product A is in a preset position in the first direction. The second limit assembly is arranged on the bearing plate 30 and is located at both ends of the clamping station B in the second direction. The second limit assembly comprises a second limit structure 51, and a second sensor 52 is arranged on the second limit structure 51, and the second sensor 52 is used to sense whether the product A is in a preset position in the second direction. The moving assembly includes a moving structure 61 movably disposed on the carrier plate 30, and the moving structure 61 is disposed at the other end of the clamping station B relative to the first limiting structure 41 in the first direction, and the moving structure 61 can move relative to the clamping station B to hold the product A against the first limiting structure 41. The negative pressure monitoring assembly realizes the function of negative pressure suction of the product A located on the carrier plate 30 through the suction port 31 opened on the carrier plate 30, and the negative pressure monitoring assembly can monitor whether the product A is in a preset position according to the negative pressure value generated by the suction port 31.

[0033] The preset position can be understood as the correct position where the product A can be processed normally on the clamping station B, which can be determined by setting the required distance between the product A and the first limiting structure 41 and the second limiting structure 51 and the required negative pressure value in advance in the control system after the product A is placed on the clamping station B. The first direction and the second direction are different directions. In this embodiment, the first direction and the second direction are set vertically. For ease of understanding, in this embodiment, the first direction is defined as the x direction, and the second direction is defined as the y direction.

[0034] refer to Figure 2 and Figure 3As shown, the clamping station B has a square profile in this embodiment, and the surface of the clamping station B is provided with a plurality of raised bearing parts B1, and the upper surfaces of all bearing parts B1 are located on the same plane to jointly support the product A. The raised setting of the bearing part B1 can relatively suspend the product A, so that the scraps generated during the processing of the product A will not affect the negative pressure value generated when the subsequent product A to be processed is placed on the clamping station B. It can be understood that at this time, the suction port 31 should be set on the bearing part B1. The number of suction ports 31 can be one or more, and multiple suction ports 31 can be set on the same bearing part B1, or on different bearing parts B1. The suction ports 31 are all connected to the negative pressure monitoring device C. While the negative pressure monitoring device C performs negative pressure suction, the negative pressure value generated by the suction port 31 on the product A is monitored, and the signal is transmitted to the control system to monitor whether the product A is in the preset position. It can be understood that the negative pressure monitoring device C and the suction port 31 together constitute the negative pressure monitoring component in this embodiment.

[0035] The first limiting structure 41 is arranged at one end of the clamping station B in the x direction, and the first limiting structure 41 has a first limiting surface 411 arranged facing the clamping station B. The first limiting surface 411 is perpendicular to the x direction. When the product A is placed on the clamping station B, the first limiting surface 411 can fit one side surface of the product A. The first sensor 42 is arranged in the first limiting structure 41 in the x direction, and the sensing end of the first sensor 42 is exposed to the first limiting surface 411. When the first limiting surface 411 fits one side surface of the product A, the first sensor 42 can sense the distance between the product A and itself, thereby transmitting a signal to the control system to determine whether the product A is at a preset position in the x direction.

[0036] The first limiting assembly also includes a third limiting structure 43 and a fourth limiting structure 44. The third limiting structure 43 and the first limiting structure 41 are located at the same end of the clamping station B, and the fourth limiting structure 44 is arranged at the other end of the clamping station B in the x direction. The number of third limiting structures 43 is preferably two, which are respectively arranged on both sides of the first limiting structure 41. Each third limiting structure 43 has a third limiting surface 431, which is located in the same plane as the first limiting surface 411 and limits a side surface of the product A together with the first limiting surface 411. Figure 5 As shown, in order to improve the contact stability between the product A and the third limiting structure 43, anti-slip patterns for improving friction are formed on the third limiting surface 431.

[0037] The number of the fourth limiting structures 44 is preferably two, and they are arranged in a one-to-one correspondence with the third limiting structures 43. Each of the fourth limiting structures 44 has a fourth limiting surface 441, which is parallel to and opposite to the third limiting surface 431, and the vertical distance between the fourth limiting surface 441 and the third limiting surface 431 is greater than the length of the product A in the x direction. The fourth limiting structure 44 can move relative to the carrier plate 30 to adjust the distance between it and the clamping station B. Specifically, the fourth limiting structure 44 has a mounting portion 442 in contact with the carrier plate 30, and a waist-shaped hole 443 is provided on the mounting portion 442, and the extension direction of the waist-shaped hole 443 is the x direction. The fourth limiting structure 44 is relatively fixed to the carrier plate 30 by bolts. In order to prevent the fourth limiting structure 44 from being offset when it moves relative to the carrier plate 30, a guide groove 32 extending in the x direction is provided on the carrier plate 30, and the mounting portion 442 of the fourth limiting structure 44 can move in the guide groove 32.

[0038] refer to Figure 6 As shown, in order to make it easier to place the product A on the clamping station B, and at the same time enable the fourth limiting structure 44 to push the product D as far as possible toward the first limiting structure 41 and the third limiting structure 43, a raised elastic portion 444 is provided on the fourth limiting surface 441 of the fourth limiting structure 44, and the elastic portion 444 can produce a certain elastic deformation to provide a thrust in the x direction for the product A. The minimum vertical distance between the elastic portion 444 and the third limiting surface 431 of the third limiting structure 43 is smaller than the length of the product A in the x direction.

[0039] refer to Figure 2 and Figure 3 As shown, the second limiting structure 51 is arranged at one end of the clamping station B in the y direction, and the second limiting structure 51 has a second limiting surface 511 arranged facing the clamping station B. The second limiting surface 511 is perpendicular to the y direction. When the product A is placed on the clamping station B, the second limiting surface 511 can fit the other side surface of the product A. The second sensor 52 is arranged in the second limiting structure 51 in the y direction, and the sensing end of the second sensor 52 is exposed to the second limiting surface 511. When the second limiting surface 511 fits the side surface of the product A, the second sensor 52 can sense the distance between the product A and itself, thereby transmitting a signal to the control system to determine whether the product A is at a preset position in the y direction.

[0040] The second limiting assembly also includes a fifth limiting structure 53 and a sixth limiting structure 54. The fifth limiting structure 53 and the second limiting structure 51 are located at the same end of the clamping station B, and the sixth limiting structure 54 is arranged at the other end of the clamping station B in the y direction. The number of the fifth limiting structures 53 is preferably two, which are respectively arranged on both sides of the second limiting structure 51. The fifth limiting structure 53 has the same structure as the third limiting structure 43. Each fifth limiting structure 53 has a fifth limiting surface, which is located in the same plane as the second limiting surface 511, and together with the second limiting surface 511, limits a side surface of the product A. In order to improve the contact stability between the product A and the fifth limiting structure 53, anti-slip patterns that increase friction are also formed on the fifth limiting surface, which can be referred to. Figure 5 shown.

[0041] The number of the sixth limiting structures 54 is preferably two, and they are arranged in a one-to-one correspondence with the fifth limiting structure 53. The sixth limiting structure 54 has the same structure as the fourth limiting structure 44. Each sixth limiting structure 54 has a sixth limiting surface, which is parallel to and opposite to the fifth limiting surface, and the vertical distance between the sixth limiting surface and the fifth limiting surface is greater than the length of the product A in the y direction. The sixth limiting structure 54, like the fourth limiting structure 44, can also be moved relative to the carrier plate 30 to adjust the distance between it and the clamping station B. Specifically, the sixth limiting structure 54 also has a mounting portion 442 in contact with the carrier plate 30, and a waist-shaped hole 443 is provided on the mounting portion 442, and the extension direction of the waist-shaped hole 443 is the y direction. The sixth limiting structure 54 is relatively fixed to the carrier plate 30 by bolts. In order to prevent the sixth position limiting structure 54 from being offset when it moves relative to the supporting plate 30, a guide groove 32 extending in the y direction is provided on the supporting plate 30, and the mounting portion 442 of the sixth position limiting structure 54 can move in the guide groove 32. Figure 6 shown.

[0042] refer to Figure 6 As shown, in order to make it easier to place product A on the clamping station B, and at the same time enable the sixth limiting structure 54 to push product D as far as possible toward the second limiting structure 51 and the fifth limiting structure 53, a raised elastic portion 444 is provided on the sixth limiting surface of the sixth limiting structure 54, and the elastic portion 444 can produce a certain elastic deformation to provide a thrust in the y direction for product A. The minimum vertical distance between the elastic portion 444 and the fifth limiting surface of the fifth limiting structure 53 is smaller than the length of product A in the y direction.

[0043] It is understandable that the first and second limiting assemblies are not enough to limit the position of product A so that product A remains absolutely stable during processing. Therefore, the product clamping device of this embodiment further includes a moving assembly that limits product A to a preset position of clamping station B.

[0044] refer to Figure 2 and Figure 3 As shown, the moving component includes a moving structure 61 movably arranged on the carrying plate 30. The moving structure 61 is arranged at the other end of the clamping station B in the x direction relative to the first limiting structure 41. The moving structure 61 can move in the x direction relative to the clamping station B to hold the product A against the first limiting structure 41.

[0045] refer to Figure 3 and Figure 4 As shown, a mounting plate 33 is provided on one side of the carrier plate 30 in the x direction. The moving assembly includes a driving structure 62, which is fixed on the mounting plate 33. The driving structure 62 has a driving shaft that can be extended and retracted along the x direction. The moving structure 61 is constructed as a strip structure, and the moving structure 61 has a first end 61A and a second end 61B opposite to each other. A supporting surface 611 is formed on the first end 61A, and the second end 61B is connected to the driving shaft of the driving structure 62. In the x direction, a notch 34 is provided on the carrier plate 30 from the edge to the location of the clamping station B. The moving structure 61 is located in the notch 34 and is axially connected to the carrier plate, so that under the action of the driving structure 62, the supporting surface 611 of the moving structure 61 can be relatively close to or away from the clamping station B, so as to cooperate with the first limiting structure 41 and the third limiting structure 43 to clamp and limit the product A.

[0046] In this embodiment, the product clamping device with anti-foolproof function also includes a third sensor 70, which can approach or move away from the clamping station B in a third direction to detect the height of the product A located on the clamping station B, wherein the third direction is perpendicular to the first direction and the second direction.

[0047] For example, the third sensor 70 may be an L-shaped probe, which is disposed on the z-axis of the processing equipment. The z-axis of the processing equipment can drive the L-shaped probe to move synchronously during movement to monitor the height of the product A placed on the clamping station B.

[0048] refer to Figure 1 , Figure 3 and Figure 7As shown, a group of oppositely arranged edges of product A extend outwardly with step portions A1 and A2. A support portion B2 for supporting step portion A1 and a support portion B3 for supporting step portion A2 are formed between the fifth limiting structure 53 and the sixth limiting structure 54 at both ends of the clamping station B in the y direction. When product A is placed on the clamping station B, the two step portions A1 and step portion A2 of product A in the y direction are supported on support portion B2 and support portion B3 respectively. And when product A is a standard product, when it is placed on the clamping station B, its bottom surface can just contact the bearing portion B1. The height of product A described in this embodiment is the distance between the bottom surface of step portion A1 and the bottom surface of product A.

[0049] In this embodiment, the first sensor, the second sensor, the third sensor and the negative pressure monitoring device are all connected to the alarm device of the processing equipment. If the first sensor and the second sensor detect that product A is not clamped in place in the x and y directions, the signal is transmitted to the control system of the processing equipment, the alarm device of the processing equipment is activated, an alarm is issued, and the processing equipment suspends processing until product A is re-clamped correctly. Similarly, if product A is not clamped in place in the x direction, there will be a gap between product A and the bearing part B1, and the negative pressure value generated by the suction port 31 cannot reach the set value. The negative pressure monitoring device transmits a signal to the processing equipment, the alarm device of the processing equipment is activated, an alarm is issued, and the processing equipment suspends processing until product A is re-clamped correctly. In the third direction (z-axis direction), when product A is a defective product and its height is less than the standard height H of product A, due to the existence of the support part, the lowest surface of product A cannot contact the bearing part B1, and the negative pressure value also has problems, triggering an alarm. When product A is a defective product and its height is greater than the standard height H of product A, the third sensor detects the height of product A, sends a signal, and triggers an alarm. It can be understood that the standard height H of product A mentioned here is also the standard height between the bottom surface of the step portion A1 of product A and the bottom surface of product A itself in the standard state.

[0050] Compared with the prior art, the product clamping device with fool-proof function according to the utility model can automatically identify whether the product is placed in the preset position of the clamping station, prevent the product from being processed incorrectly due to position error, and improve the product yield.

[0051] According to the product clamping device with fool-proof function of the utility model, when it is detected that the product is placed incorrectly or the incoming material has abnormal product size (error in product height is detected), an alarm can be triggered and a prompt can be given to suspend processing.

[0052] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A product clamping device with foolproof function, characterized in that: include: A carrying plate, wherein a clamping station is formed on the carrying plate; A first limiting assembly is arranged on the carrying plate and located at two ends of the clamping station in the first direction, the first limiting assembly comprises a first limiting structure, a first sensor is arranged on the first limiting structure, and the first sensor is used to sense whether the product is in a preset position in the first direction; The second limiting component is arranged on the supporting plate and located at both ends of the clamping station in the second direction. The second limiting component includes a second limiting structure. The second limiting structure is provided with a second sensor. The second sensor is used to sense whether the product is in a preset position in the second direction. The second direction is set in a different direction from the first direction.

2. The product clamping device with foolproof function as claimed in claim 1, characterized in that: It also includes a negative pressure monitoring component, including a suction port and a negative pressure monitoring device connected to the suction port; the suction port is arranged through the carrier plate and is located within the range of the clamping station, and the negative pressure monitoring device monitors whether the product is in a preset position according to the negative pressure value generated by the suction port.

3. The product clamping device with foolproof function as claimed in claim 1, characterized in that: It also includes a moving component, which includes a moving structure movably arranged on the supporting plate, and the moving structure is arranged at the other end of the clamping station relative to the first limiting structure in the first direction, and the moving structure can move relative to the clamping station to hold the product against the first limiting structure.

4. The product clamping device with foolproof function as claimed in claim 3, characterized in that: The mobile assembly includes a drive structure; The movable structure has a first end and a second end opposite to each other, a supporting surface is formed on the first end, and the second end is connected to the driving structure. The movable structure is axially connected to the supporting plate so that under the action of the driving structure, the supporting surface of the movable structure can be relatively close to or away from the clamping station.

5. The product clamping device with foolproof function as claimed in claim 1, characterized in that: The first limiting structure has a first limiting surface disposed facing the clamping station, and the first sensor is disposed in the first limiting structure and exposed to the first limiting surface.

6. The product clamping device with foolproof function as claimed in claim 5, characterized in that: The first limiting assembly also includes a third limiting structure and a fourth limiting structure, the third limiting structure and the fourth limiting structure are respectively arranged at two ends of the clamping station in the first direction, the third limiting structure has a third limiting surface, and the third limiting surface and the first limiting surface are located in the same plane.

7. The product clamping device with foolproof function as claimed in claim 6, characterized in that: The fourth limiting structure has a fourth limiting surface arranged facing the clamping station, and the vertical distance between the fourth limiting surface and the third limiting surface is greater than the length of the product in the first direction; a raised elastic portion is arranged on the fourth limiting surface, and the minimum vertical distance between the elastic portion and the third limiting surface is less than the length of the product in the first direction.

8. The product clamping device with foolproof function as claimed in claim 1, characterized in that: The second limiting structure has a second limiting surface disposed facing the clamping station, and the second sensor is disposed in the second limiting structure and exposed to the second limiting surface.

9. The product clamping device with foolproof function as claimed in claim 8, characterized in that: The second limiting assembly also includes a fifth limiting structure and a sixth limiting structure, the fifth limiting structure and the sixth limiting structure are respectively arranged at two ends of the clamping station in the second direction, the fifth limiting structure has a fifth limiting surface, and the fifth limiting surface and the second limiting surface are located in the same plane.

10. The product clamping device with foolproof function as claimed in claim 9, characterized in that: The sixth limiting structure has a sixth limiting surface arranged facing the clamping station, and the vertical distance between the sixth limiting surface and the fifth limiting surface is greater than the length of the product in the second direction; a raised elastic portion is arranged on the sixth limiting surface, and the minimum vertical distance between the elastic portion and the fifth limiting surface is less than the length of the product in the second direction.

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