Press detection device

Abstract

The utility model relates to the technical field of automation, and particularly discloses a pressing detection device, which comprises a fixed frame body, a pressing mechanism and a pressing mechanism, the conveying line is arranged on the fixed frame body; the carrier is movably arranged on the conveying line and is used for loading a to-be-detected product; the pressing unit comprises a driver, a transmission part and a pressing part; the driver and the transmission part are arranged on the fixed frame, a transmission cavity is formed in the transmission part, part of the pressing part is arranged in the transmission cavity to divide the transmission cavity into a first sub-cavity and a second sub-cavity, and the driver is in fluid communication with the first sub-cavity and the second sub-cavity. According to the invention, automatic pressing detection of the product is realized, the pressing detection efficiency of the product is improved, the detection precision of the product is improved, and finally the production efficiency of the product is improved.

Description

Technical Field

[0001] This application relates to the field of automation technology, and particularly to a pressing detection device. Background Art

[0002] With the rapid development of electronic products such as mobile phones and laptop computers, the demand for electronic products with better performance such as more durable and safer is very urgent. In the manufacturing process of electronic products, the pressing test of the shell is an important link. However, the existing pressing tests are all carried out manually. Due to the differences in pressing standards and forces among different operators, the instability and unreliability of the detection results are caused. At the same time, the manual pressing test method is time-consuming and laborious, resulting in low detection efficiency and ultimately low production efficiency of electronic products. Therefore, how to improve the detection efficiency of electronic products and thus improve the production efficiency of electronic products has become an urgent problem to be solved. Utility Model Content

[0003] The embodiments of this application provide a pressing detection device to improve the detection accuracy of products and ultimately improve the production efficiency of products.

[0004] To solve the above technical problems, the embodiments of this application disclose the following technical solutions:

[0005] On the one hand, a pressing detection device is provided, including: a fixed frame;

[0006] A conveyor line, arranged in the fixed frame;

[0007] A carrier, movably arranged on the conveyor line, and the carrier is used to load the product to be detected; and

[0008] A pressing unit, the pressing unit includes: a driver, a transmission member and a pressing member;

[0009] The driver and the transmission member are arranged in the fixed frame. A transmission cavity is formed in the transmission member. Part of the pressing member is arranged in the transmission cavity to divide the transmission cavity into a first sub-cavity and a second sub-cavity. The driver is respectively in fluid communication with the first sub-cavity and the second sub-cavity. The driver drives the pressing member to approach or move away from the product by controlling the pressure difference between the first sub-cavity and the second sub-cavity.

[0010] In addition to one or more of the above disclosed features, or as an alternative, the pressing member includes: a piston part and a pressing part connected together;

[0011] At least part of the piston part is arranged in the transmission cavity to divide the transmission cavity into a first sub-cavity and a second sub-cavity, and the pressing part is arranged outside the transmission cavity.

[0012] In addition to one or more of the features disclosed above, or as an alternative, the pressing unit further includes: a pressure sensor disposed on the pressing portion, the pressure sensor being configured to monitor the pressure applied to the product; and

[0013] a displacement sensor disposed on the piston portion, the displacement sensor being configured to sense the position of the pressing member.

[0014] In addition to one or more of the features disclosed above, or as an alternative, the pressing unit further includes: a seal disposed on an outer surface of the piston portion located within the transmission cavity.

[0015] In addition to one or more of the features disclosed above, or as an alternative, a first communication hole and a second communication hole are formed in the transmission member, the first communication hole being in fluid communication with the first sub-cavity, and the second communication hole being in fluid communication with the second sub-cavity;

[0016] The driver includes: a driving body, a first output port, and a second output port, the first output port and the second output port are both disposed on the driving body, and the first output port is in fluid communication with the first sub-cavity, and the second output port is in fluid communication with the second sub-cavity.

[0017] In addition to one or more of the features disclosed above, or as an alternative, a plurality of the drivers, the transmission members, and the pressing members are provided;

[0018] The first output port of each driver is in fluid communication with the first sub-cavity of a corresponding one of the transmission members, the second output port of each driver is in fluid communication with the second sub-cavity of a corresponding one of the transmission members, and a portion of each pressing member is disposed within the transmission cavity of a corresponding one of the transmission members.

[0019] In addition to one or more of the features disclosed above, or as an alternative, the pressing detection device has a first direction;

[0020] The pressing detection device further includes: a connecting member disposed on the fixed frame, the connecting member extending along the first direction, and a plurality of the transmission members are disposed on the connecting member.

[0021] In addition to one or more of the features disclosed above, or as an alternative, a sliding groove is formed in the connecting member, the sliding groove extends along the first direction, and portions of a plurality of the transmission members are movably disposed within the sliding groove.

[0022] In addition to one or more of the features disclosed above, or as an alternative, it further includes: a vision sensor, which is arranged on the fixed frame body, and the vision sensor is located above the conveyor line, and the vision sensor is used for collecting image information of the product.

[0023] In addition to one or more of the features disclosed above, or as an alternative, it further includes: an audio sensor, which is arranged on the fixed frame body, and the audio sensor is used for collecting the sound when the pressing member presses the product.

[0024] One of the technical solutions in the above technical solutions has the following advantages or beneficial effects: In this application, the driver is used to drive the pressing member to approach or move away from the product by controlling the pressure difference between the first sub-chamber and the second sub-chamber, so as to realize the automatic pressing detection of the product, without the need for manual detection operations, improving the pressing detection efficiency of the product, while improving the detection accuracy of the product, and ultimately improving the production efficiency of the product. Description of the Drawings

[0025] The following will make the technical solutions and other beneficial effects of this application obvious by describing the specific embodiments of this application in detail in conjunction with the drawings.

[0026] Figure 1 is a three-dimensional structural view of the pressing detection device provided by an embodiment of this application;

[0027] Figure 2 is a three-dimensional structural view of the pressing detection device after hiding the controller provided by an embodiment of this application;

[0028] Figure 3 is a three-dimensional structural view of the pressing unit provided by an embodiment of this application;

[0029] Figure 4 is a cross-sectional view of the pressing unit provided by an embodiment of this application;

[0030] Figure 5 is Figure 4 a partial enlarged view of part A in

[0031] Description of the Reference Numerals:

[0032] 100, pressing detection device;

[0033] 110, fixed frame body; 111, bearing part;

[0034] 120, conveyor line;

[0035] 130, carrier;

[0036] 140. Pressing unit; 141. Driver; 1411. Driving body; 1412. First output port; 1413. Second output port; 142. Transmission member; 1421. Transmission cavity; 14211. First sub-cavity; 14212. Second sub-cavity; 1422. First communication hole; 1423. Second communication hole; 143. Pressing member; 1431. Piston part; 1432. Pressing part; 144. Pressure sensor; 145. Displacement sensor; 146. Sealing member;

[0037] 150. Connecting member; 151. Chute;

[0038] 160. Vision sensor;

[0039] 170. Audio sensor;

[0040] 180. Controller;

[0041] 200. Product. Detailed implementation manners

[0042] In order to make the objectives, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and specific implementation manners. It should be understood that the specific implementation manners described in this specification are only for explaining the present application and not for limiting the present application.

[0043] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0044] In the description of the present application, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0045] In the present application, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0046] In the embodiments of the present application, with reference to Figures 1 to 5 , the present application provides a pressing detection device 100. The pressing detection device 100 has a first direction X, a second direction Y, and a third direction Z that intersect pairwise. Exemplarily, the pressing detection device 100 has a first direction X, a second direction Y, and a third direction Z that are pairwise perpendicular to each other. Among them, "perpendicular" refers to the state where the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is 89° to 91°.

[0047] Specifically, the pressing detection device 100 may include: a fixed frame 110, a conveyor line 120, a carrier 130, and a pressing unit 140.

[0048] Specifically, the conveyor line 120 is arranged on the fixed frame 110; the carrier 130 is movably arranged on the conveyor line 120. The carrier 130 is used to load the product 200 to be detected, and the conveyor line 120 is used to convey the carrier 130 loaded with the product 200; the pressing unit 140 is arranged on the fixed frame 110, and the pressing unit 140 is used to perform a pressing detection on the product 200 to detect the strength of the product 200.

[0049] Among them, the conveyor line 120 can be any one of a belt conveyor line, a roller conveyor line, etc. Exemplarily, in the present application, the conveyor line 120 is a metal roller conveyor line to prevent the product from deforming when the pressing unit 140 presses the product 200, and at the same time cooperate with the pressing unit 140 to improve the detection efficiency.

[0050] Among them, the product 200 can be the back shell of a mobile phone, but is not limited thereto.

[0051] Specifically, the pressing unit 140 includes: a driver 141, a transmission member 142, and a pressing member 143; the driver 141 and the transmission member 142 are disposed on the fixed frame 110, a transmission cavity 1421 is formed in the transmission member 142, and a part of the pressing member 143 is disposed in the transmission cavity 1421 to divide the transmission cavity 1421 into a first sub-cavity 14211 and a second sub-cavity 14212. The driver 141 is respectively in fluid communication with the first sub-cavity 14211 and the second sub-cavity 14212, and the driver 141 drives the pressing member 143 to approach or move away from the product 200 by controlling the pressure difference between the first sub-cavity 14211 and the second sub-cavity 14212.

[0052] Among them, the driver 141 can be a gas source component such as a vacuum pump or a vacuum station, but is not limited thereto.

[0053] Among them, the pressing detection device 100 further includes: a controller 180, and the controller 180 is respectively electrically connected or wirelessly connected to the conveyor line 120 and the driver 141. The controller 180 can be used to control the opening or closing of the driver 141.

[0054] It can be understood that when the conveyor line 120 conveys the carrier 130 loaded with the product 200 to be detected to the detection station, the controller 180 controls the driver 141 to be turned on, so that the driver 141 conveys gas into the first sub-cavity 14211, thereby increasing the air pressure in the first sub-cavity 14211, driving the pressing member 143 to move downward along the third direction Z, driving the pressing member 143 to approach the product 200, and coming into contact with the product 200 to achieve the pressing detection of the product 200; when the pressing detection is completed, the controller 180 controls the driver 141 to stop conveying gas into the first sub-cavity 14211, controls the driver 141 to convey gas into the second sub-cavity 14212, so that the air pressure in the second sub-cavity 14212 increases, driving the pressing member 143 to move upward along the third direction Z, driving the pressing member 143 to move away from the product 200, and resetting to the initial position.

[0055] In this application, the driver 141 drives the pressing member 143 to approach or move away from the product 200 by controlling the pressure difference between the first sub-cavity 14211 and the second sub-cavity 14212, so as to realize the automatic pressing detection of the product, without manual detection operation, improving the pressing detection efficiency of the product, and at the same time improving the detection accuracy of the product 200, and finally improving the production efficiency of the product.

[0056] In one embodiment, the driving method of the pressing member 143 is not limited to the above scheme. For other driving methods, for example, a linear driving module arranged along the third direction Z is provided, and the pressing member 143 is connected to the output end of the linear driving module to realize the driving of the pressing member 143 and other schemes, which can also achieve the effects in this application and should also be regarded as embodiments of this application.

[0057] In one embodiment, referring to Figures 4 to 5 , the pressing member 143 includes: a piston portion 1431 and a pressing portion 1432 connected to each other; at least part of the piston portion 1431 is disposed in the transmission cavity 1421 to divide the transmission cavity 1421 into a first sub-cavity 14211 and a second sub-cavity 14212, and the pressing portion 1432 is disposed outside the transmission cavity 1421 for pressing and detecting the product 200.

[0058] Among them, the piston portion 1431 can be integrally formed with the pressing portion 1432, that is, the piston portion 1431 and the pressing portion 1432 are of an integral structure; the piston portion 1431 can also be fixedly connected to the pressing portion 1432. For example: the piston portion 1431 is fixedly connected to the pressing portion 1432 by processes such as screwing, riveting or clamping. In this application, no specific limitation is made, and it can be specifically set according to the actual situation. For example, in this application, the piston portion 1431 and the pressing portion 1432 are separately provided, and the piston portion 1431 and the pressing portion 1432 are fixedly connected by screwing through an intermediate connecting member, so as to facilitate the overall assembly of the pressing detection device 100 and improve the assembly efficiency of the pressing detection device 100.

[0059] Among them, the pressing portion 1432 can be made of a flexible material, or a flexible material layer is coated on the outer surface of the pressing portion 1432 to prevent the pressing portion 1432 from damaging the product.

[0060] It can be understood that in this application, the pressure difference between the first sub-cavity 14211 and the second sub-cavity 14212 is used to drive the piston portion 1431 to move in the third direction Z, thereby driving the pressing portion 1432 to move in the third direction Z to control the pressing portion 1432 to approach or move away from the product 200, so as to realize the automatic pressing detection of the product without manual detection operation, and improve the pressing detection efficiency of the product.

[0061] In one embodiment, referring to Figures 4 to 5, in order to improve the pressing driving effect of the pressing unit 140, in this application, the pressing unit 140 further includes: a seal 146, which is disposed on the outer surface of the piston portion 1431 located in the transmission cavity 1421 to seal between the piston portion 1431 and the inner wall of the transmission member 142, thereby ensuring the sealing between the first sub-cavity 14211 and the second sub-cavity 14212, so as to ensure excellent driving control efficiency among the driver 141, the transmission member 142, and the pressing member 143, and further improve the detection efficiency.

[0062] Exemplarily, in this application, the seal 146 is an O-ring, but is not limited thereto.

[0063] In one embodiment, the transmission member 142 is provided with a first communication hole 1422 and a second communication hole 1423. The first communication hole 1422 is in fluid communication with the first sub-cavity 14211, and the second communication hole 1423 is in fluid communication with the second sub-cavity 14212.

[0064] Among them, the first communication hole 1422 and the second communication hole 1423 can be of any shape, and are not specifically limited in this application. Exemplarily, in this application, both the first communication hole 1422 and the second communication hole 1423 are circular.

[0065] Specifically, the driver 141 includes: a driving body 1411, a first output port 1412, and a second output port 1413. Both the first output port 1412 and the second output port 1413 are disposed on the driving body 1411, and the first output port 1412 is in fluid communication with the first sub-cavity 14211, and the second output port 1413 is in fluid communication with the second sub-cavity 14212.

[0066] It can be understood that when the conveyor line 120 conveys the carrier 130 loaded with the product 200 to be detected to the detection station, the controller 180 controls the first output port 1412 of the driver 141 to open and the second output port 1413 to close, so that the first output port 1412 of the driver 141 conveys gas into the first sub-cavity 14211 through the first communication hole 1422, thereby increasing the air pressure in the first sub-cavity 14211 to drive the pressing member 143 to move downward along the third direction Z, driving the pressing member 143 to approach the product 200 to contact the product 200, and realizing the pressing detection of the product 200;

[0067] After the pressing detection is completed, the controller 180 controls the first output port 1412 of the driver 141 to close and the second output port 1413 to open, and controls the second output port 1413 of the driver 141 to deliver gas into the second sub-chamber 14212 through the second communication hole 1423, so as to increase the air pressure in the second sub-chamber 14212, drive the pressing member 143 to move upward in the third direction Z, drive the pressing member 143 away from the product 200, and reset to the initial position.

[0068] In one embodiment, referring to Figures 4 to 5 , the pressing unit 140 further includes: a pressure sensor 144 and a displacement sensor 145.

[0069] The pressure sensor 144 is disposed on the pressing portion 1432, and the pressure sensor 144 is used to monitor the pressure received by the product 200, so as to realize the adaptive pressing detection of the pressing unit 140 and prevent the pressing member 143 from damaging the product 200; the displacement sensor 145 is disposed on the piston portion 1431, and the displacement sensor 145 is used to sense the position of the pressing member 143, further realizing the adaptive pressing detection of the pressing unit 140.

[0070] Wherein, both the pressure sensor 144 and the displacement sensor 145 are electrically connected or wirelessly connected to the controller.

[0071] Wherein, the pressure sensor 144 can be a finger-type pressure sensor, but is not limited thereto.

[0072] The displacement sensor 145 can be any one of a linear displacement sensor, a magnetostrictive displacement sensor, an optoelectronic displacement sensor, etc., but is not limited thereto.

[0073] It can be understood that when the pressing unit 140 performs a pressing operation, after the pressure sensor 144 monitors the pressure received by the product 200, the pressure sensor 144 transmits the information of the pressure received by the product 200 to the controller. After the information is processed by the controller, if the controller determines that the pressure received by the product 200 is too large, a corresponding control instruction is sent to the driver 141 to reduce the output power of the driver 141, thereby reducing the pressure received by the product 200; if the controller determines that the pressure received by the product 200 is within the normal range, no processing is performed.

[0074] When the displacement sensor 145 senses the position of the piston portion 1431, the displacement sensor 145 sends an induction signal to the controller. After receiving the induction signal, the controller sends a control instruction to the driver 141 according to the induction signal to control the driver 141 to adjust the relative position of the piston portion 1431, and further adjust the relative position of the pressing portion 1432, so as to realize the real-time control of the position of the pressing member 143.

[0075] In one embodiment, referring toFigures 2 to 4 There are multiple drive units 141, transmission members 142, and pressing members 143; the multiple drive units 141, multiple transmission members 142, and multiple pressing members 143 are all arranged at intervals in the first direction X.

[0076] Specifically, the first output port 1412 of each drive unit 141 is in fluid communication with the first sub-chamber 14211 of a corresponding transmission member 142, the second output port 1413 of each drive unit 141 is in fluid communication with the second sub-chamber 14212 of a corresponding transmission member 142, and a part of each pressing member 143 is disposed in the transmission chamber 1421 of a corresponding transmission member 142, so as to enable each drive unit 141 to control the movement of a corresponding pressing member 143.

[0077] Wherein, a bearing portion 111 is provided on the fixed frame 110, and multiple drive units 141 are all disposed on the bearing portion 111.

[0078] In this application, by providing multiple drive units 141, transmission members 142, and pressing members 143, multiple drive units 141 are used to control multiple pressing members 143 to synchronously detect different positions of the product 200, further improving the detection efficiency of the product 200. At the same time, the drives between the multiple pressing members 143 do not interfere with each other, reducing the mutual interference between the pressing units 140, ensuring the consistency of the pressing detection of the multiple pressing members 143, and improving the detection accuracy of the product 200.

[0079] In one embodiment, referring to Figures 3 to 5 , the pressing detection device 100 further includes: a connecting member 150, which is disposed on the fixed frame 110, the connecting member 150 extends along the first direction X, and multiple transmission members 142 are all disposed on the connecting member 150, so as to facilitate adjusting the relative positions between adjacent two transmission members 142, and further adjusting the relative positions between adjacent two pressing members 143, so as to perform pressing detection on products 200 of different sizes, having versatility.

[0080] Specifically, a sliding groove 151 is formed in the connecting member 150, the sliding groove 151 extends along the first direction X, and parts of multiple transmission members 142 are all movably disposed in the sliding groove 151. By controlling the movement of the transmission members 142 in the sliding groove 151, the relative positions between adjacent two transmission members 142 are adjusted, and further the relative positions between adjacent two pressing members 143 are adjusted, so as to perform pressing detection on products 200 of different sizes.

[0081] In one embodiment, referring to Figure 2 , the pressing detection device 100 further includes: a vision sensor 160 and an audio sensor 170.

[0082] Specifically, the visual sensor 160 is disposed on the fixed frame 110, and the visual sensor 160 is located above the conveyor line 120. The visual sensor 160 is used to collect the image information of the product 200, analyze the image information of the product 200, and prevent the pressing member 143 from pressing the non-detection area of the product 200, such as the mobile phone camera area, etc., causing damage to the product 200. The audio sensor 170 is disposed on the fixed frame 110, and the audio sensor 170 is used to collect the sound when the pressing member 143 presses the product 200.

[0083] Wherein, both the visual sensor 160 and the audio sensor 170 are electrically connected or wirelessly connected to the controller.

[0084] Wherein, the visual sensor 160 can be a CCD camera, but is not limited thereto.

[0085] The audio sensor 170 can be a MEMS microphone, but is not limited thereto.

[0086] It can be understood that when the visual sensor 160 captures the global information of the product 200, the visual sensor 160 transmits the global information of the product 200 to the controller. After the information is processed by the controller's image processing algorithm, the position information of the non-detection area of the product 200 is obtained, and a control instruction is sent to the conveyor line 120 to control the conveyor line 120 to adjust the relative position of the product 200, avoiding the pressing member 143 from pressing the non-detection area of the product 200.

[0087] When the pressing member 143 performs a pressing operation, after the audio sensor 170 obtains the sound information when the pressing member 143 presses the product 200, the audio sensor 170 sends the sound information to the controller. After receiving the sound information, the controller processes it to determine whether the sound information is abnormal, thereby determining whether the product 200 is abnormal.

[0088] In an embodiment, a pressure compensation measure is further added in the present application, so that each position of the product 200 can be normally stressed and normally sound when pressed, especially the abnormal sound of the abnormal product.

[0089] In summary, the operation process of the pressing detection device 100 pressing the product 200 is as follows:

[0090] First, when the pressing detection device 100 is not working, that is, in the non-operating state, after the visual sensor 160 captures the global information of the product 200, the visual sensor 160 transmits the global information of the product 200 to the controller 180. At the same time, the conveyor line 120 transmits the speed information to the controller 180 to obtain the real-time position information of the product.

[0091] When the conveyor line 120 conveys the product 200 to directly below the pressing unit 140, the controller 180 controls the opening of the first output port 1412 of the driver 141 and the closing of the second output port 1413, so that the first output port 1412 of the driver 141 conveys gas into the first sub-chamber 14211 through the first communication hole 1422, thereby increasing the air pressure in the first sub-chamber 14211 to drive the pressing member 143 to move downward along the third direction Z, driving the pressing member 143 closer to the product 200 to contact the product 200, and realizing the pressing detection of the product 200. After the audio sensor 170 obtains the sound information when the pressing member 143 presses the product 200, the audio sensor 170 sends the sound information to the controller for algorithm analysis, and feeds back the analysis result to the device end; when the pressing detection is completed, the controller 180 controls the closing of the first output port 1412 of the driver 141 and the opening of the second output port 1413, and controls the second output port 1413 of the driver 141 to convey gas into the second sub-chamber 14212 through the second communication hole 1423, increasing the air pressure in the second sub-chamber 14212 to drive the pressing member 143 to move upward along the third direction Z, driving the pressing member 143 away from the product 200 and resetting it to the initial position. After repeating the above operation 3 times, it rises to the initial position. The conveyor line 120 moves the product 200 a certain distance, and the pressing unit 140 repeats the above operation until the pressing detection of the product 200 is completed, waiting for the next product 200 to be tested for detection.

[0092] The introduction provided in the above steps is only used to help understand the method, structure and core idea of this application. For those of ordinary skill in the art in this technical field, without departing from the principle of this application, several improvements and modifications can still be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A pressure detection device, characterized in that: include: Fixed frame; A conveying line, arranged on the fixed frame; A carrier, movably arranged on the conveyor line, and used for loading products to be inspected; as well as A pressing unit, the pressing unit comprising: a driver, a transmission member and a pressing member; The driver and the transmission member are arranged in the fixed frame, a transmission cavity is opened in the transmission member, and part of the pressing member is arranged in the transmission cavity to separate the transmission cavity into a first sub-cavity and a second sub-cavity. The driver is fluidically connected to the first sub-cavity and the second sub-cavity respectively, and the driver drives the pressing member to approach or move away from the product by controlling the pressure difference between the first sub-cavity and the second sub-cavity.

2. The pressure detection device according to claim 1, characterized in that: The pressing member comprises: a piston portion and a pressing portion connected to each other; At least part of the piston portion is disposed in the transmission cavity to separate the transmission cavity into a first sub-cavity and a second sub-cavity, and the pressing portion is disposed outside the transmission cavity.

3. The pressure detection device according to claim 2, characterized in that: The pressing unit further includes: a pressure sensor, disposed on the pressing portion, the pressure sensor being used to monitor the pressure applied to the product; and A displacement sensor is arranged on the piston part, and the displacement sensor is used to sense the position of the pressing member.

4. The pressure detection device according to claim 2, characterized in that: The pressing unit further includes a sealing member, which is disposed on an outer surface of the piston portion located in the transmission cavity.

5. The pressure detection device according to claim 1, characterized in that: The transmission member is provided with a first communicating hole and a second communicating hole, wherein the first communicating hole is in fluid communication with the first sub-cavity, and the second communicating hole is in fluid communication with the second sub-cavity; The driver comprises: a driving body, a first output port and a second output port, wherein the first output port and the second output port are both arranged on the driving body, and the first output port is in fluid communication with the first sub-cavity, and the second output port is in fluid communication with the second sub-cavity.

6. The pressure detection device according to claim 5, characterized in that: The driver, the transmission member and the pressing member are all provided in plurality; The first output port of each driver is fluidly connected to the first sub-cavity of a corresponding transmission member, the second output port of each driver is fluidly connected to the second sub-cavity of a corresponding transmission member, and a portion of each pressing member is arranged in the transmission cavity of a corresponding transmission member.

7. The pressure detection device according to claim 6, characterized in that: The pressure detection device has a first direction; The pressure detection device further includes: a connecting member, which is arranged on the fixed frame, the connecting member extends along the first direction, and the plurality of transmission members are all arranged on the connecting member.

8. The pressure detection device according to claim 7, characterized in that: A slide groove is provided in the connecting member, and the slide groove extends along the first direction. Parts of the plurality of transmission members can be movably disposed in the slide groove.

9. The pressure detection device according to claim 1, characterized in that: Also includes: A visual sensor is arranged on the fixed frame, and the visual sensor is located above the conveyor line, and the visual sensor is used to collect image information of the product.

10. The pressure detection device according to claim 1, characterized in that: Also includes: An audio sensor is arranged on the fixed frame, and is used to collect the sound when the pressing member presses the product.

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