Detection table

Abstract

The utility model discloses a detection table, which comprises an object carrying platform, a first pressing plate and a second pressing plate, and is characterized in that the object carrying platform is provided with an object carrying plane used for placing a workpiece to be detected; the first pressing plate and the second pressing plate are arranged in parallel in a first direction and are movably connected, the first pressing plate is arranged between the second pressing plate and the object carrying platform, and the first pressing plate and the second pressing plate can be driven in the first direction, so that the first pressing plate limits the to-be-detected workpiece in the first direction, and the first direction is perpendicular to the object carrying plane; the first pressing plate can move in the first direction relative to the second pressing plate, the first pressing plate comprises a preset position and an over-limit position and can be switched between the preset position and the over-limit position, and when the first pressing plate and the second pressing plate do not have relative displacement in the first direction, the first pressing plate is located at the preset position; when the first pressing plate and the second pressing plate have relative displacement in the first direction, the first pressing plate is located at the over-limit position. The scheme disclosed by the utility model can detect whether the thickness of the workpiece is qualified.

Description

TECHNICAL FIELD

[0001] The present disclosure relates generally to the technical field of workpiece dimension detection. More specifically, the present disclosure relates to a detection station. BACKGROUND

[0002] During the manufacturing process of a battery, due to the limitations of the production process, the thickness of the actual produced battery may be different from the preset thickness. In order to ensure that the thickness of the actual used battery reaches the unified standard, it is necessary to use a special device to judge whether the thickness of the battery reaches the standard.

[0003] The prior art discloses a battery thickness measuring device, comprising a bottom plate and a thickness measuring assembly. The bottom plate is provided with a placement area for placing the battery body. The thickness measuring assembly comprises a measuring member located above the bottom plate and a height adjusting member connected to the measuring member. The measuring member can scan the bottom plate in the horizontal direction, and the vertical projection of the scanning area of the measuring member can cover the placement area. The height adjusting member can adjust the distance between the measuring member and the surface of the placement area. Through the arrangement of the measuring member and the height adjusting member, it is judged whether the thickness of the battery to be measured exceeds the preset upper limit value of the battery thickness according to whether the measuring member can smoothly scan the upper surface of the battery to be measured.

[0004] However, the technical solution has some deficiencies. First, due to its principle, the technical solution can only judge whether the thickness of the battery is greater than the preset upper limit value of the battery thickness. The technical solution cannot distinguish between the thickness of the battery being between the upper limit value and the lower limit value of the battery thickness and being less than the lower limit value of the battery thickness. In practice, there are often two requirements for the thickness of the battery, i.e. the upper limit value and the lower limit value of the battery thickness. Second, the technical solution essentially uses a sliding block on a guide rail to judge whether the thickness of the battery exceeds the preset upper limit value of the battery thickness. When the thickness of the battery body is higher than the preset upper limit value of the battery thickness, the bottom and side of the sliding block may collide with the excessively thick part of the battery, causing damage to the battery.

[0005] Therefore, there is an urgent need to provide a detection station so that the user can accurately know the relationship between the thickness of the battery to be measured and the preset thickness, and at the same time, ensure that the measuring table does not collide with the battery to be measured during the measurement process, so that the upper surface of the battery is not damaged. Content of the utility model

[0006] In order to solve the above-mentioned technical problems, the present disclosure proposes a technical solution of a detection station in multiple aspects.

[0007] The present disclosure provides a detection table for detecting whether the thickness of a workpiece is qualified, comprising: a carrier platform, a first pressing plate, and a second pressing plate, wherein the carrier platform has a carrier plane for placing a workpiece to be detected; the first pressing plate and the second pressing plate are arranged in parallel in a first direction and are movably connected, the first pressing plate is arranged between the second pressing plate and the carrier platform, and the first pressing plate and the second pressing plate can be driven in the first direction to limit the workpiece to be detected in the first direction, and the first direction is perpendicular to the carrier plane; the first pressing plate can move relative to the second pressing plate in the first direction, and the first pressing plate comprises a preset position and an over-limit position and can be switched between the preset position and the over-limit position, when the first pressing plate and the second pressing plate have no relative displacement in the first direction, the first pressing plate is in the preset position, and when the first pressing plate and the second pressing plate have relative displacement in the first direction, the first pressing plate is in the over-limit position.

[0008] In some embodiments, the carrier platform comprises a limiting assembly and a carrier plate, the carrier platform is arranged on the carrier plate, the limiting assembly comprises a first limiting assembly and a second limiting assembly, the first limiting assembly is arranged on one side of the carrier plane in a second direction, and the second limiting assembly is arranged on one side of the carrier plane in a third direction, respectively limiting the displacement of the workpiece to be detected in the second direction and the third direction; wherein the second direction and the third direction are respectively parallel to the carrier plane and perpendicular to each other.

[0009] By means of the detection table provided above, the present embodiment ensures that the detection table does not collide with the workpiece to be detected during measurement by arranging a flat plate with a large enough area at the contact surface of the measuring component in contact with the workpiece to be detected, thereby preventing damage to the surface of the workpiece to be detected. Further, in one embodiment, by arranging a sensor for measuring the thickness, the detection table can clearly judge three relationship conditions of the actual thickness of the workpiece and the preset thickness (i.e. the actual thickness of the workpiece is greater than, equal to, or less than the preset thickness). BRIEF DESCRIPTION OF DRAWINGS

[0010] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0011] Figure 1 A structural schematic diagram of a measurement end of the detection table in the present embodiment is shown;

[0012] Figure 2a Figure 2c The position diagram of the sensor of the detection station in the embodiment of the present disclosure is shown.

[0013] Figure 3 The structural diagram of the object platform of the detection station in the embodiment of the present disclosure is shown.

[0014] Figure 4 The local structural diagram of the area near the sensor of the detection station in the embodiment of the present disclosure is shown.

[0015] Figure 5a Figure 5c The three measurement condition diagrams of the detection station in the embodiment of the present disclosure are shown.

[0016] Explanation of reference signs:

[0017] 10 - object platform, 11 - first limiting assembly, 111 - first limiting block, 112 - second limiting block, 12 - carrier plate, 13 - first transmission assembly, 131 - first telescopic end, 132 - first fixed end;

[0018] 20 - first pressing plate;

[0019] 30 - second pressing plate;

[0020] 40 - buffer component, 41 - first elastic component, 42 - second elastic component;

[0021] 50 - sensor, 51 - first sensor first assembly, 511 - shielding piece, 52 - first sensor second assembly, 521 - detection fixed element, 522 - detection main body, 5221 - first sensing end, 5222 - second sensing end;

[0022] 60 - transmission component, 61 - cylinder assembly, 611 - cylinder telescopic end, 612 - cylinder main body, 613 - fixed hole, 62 - fixed assembly, 621 - second sliding rail;

[0023] 70 - connecting shaft, 71 - first connecting shaft, 72 - second connecting shaft;

[0024] 91 - first direction, 92 - second direction, 93 - third direction. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below in combination with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present disclosure. ​​

[0026] It should be understood that the terms "comprises" and "comprising" used in the specification and claims of the present disclosure are used on the basis and the out of limitation to describe the presence of stated features, integers, steps, or components but not to the exclusion of one or more other features, integers, steps, components, or groups thereof.

[0027] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used in this specification and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "and / or," as used herein, refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0028] As used in this specification and claim(s), the terms "if' and "when" can be construed to mean "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [a described condition or event] is detected" can be construed to mean "upon determining" or "in response to determining" or "upon detecting [the described condition or event]" or "in response to detecting [the described condition or event]," depending on the context.

[0029] The specific embodiments of the present disclosure will be described in detail below with reference to the attached drawings.

[0030] Figure 1 The structure of the measurement end of the detection station in the embodiments of the present disclosure is shown.

[0031] As Figure 1As shown, a testing station is used to test whether the thickness of a workpiece is qualified. The testing station includes: a platform 10, a first pressure plate 20, and a second pressure plate 30. The platform 10 has a loading plane for placing the workpiece to be tested. The first pressure plate 20 and the second pressure plate 30 are arranged parallel to each other and movably connected in a first direction 91. The first pressure plate 20 is disposed between the second pressure plate 30 and the platform 10, and the first pressure plate 20 and the second pressure plate 30 can be driven in the first direction 91 so that the first pressure plate 20 is at its upper limit in the first direction 91. The workpiece to be inspected is positioned such that the first direction 91 is perpendicular to the loading plane; the first pressure plate 20 can move relative to the second pressure plate 30 in the first direction 91, and the first pressure plate 20 includes a preset position and an over-limit position, and can switch between the preset position and the over-limit position. When the first pressure plate 20 and the second pressure plate 30 have no relative displacement in the first direction 91, the first pressure plate 20 is in the preset position; when the first pressure plate 20 and the second pressure plate 30 have relative displacement in the first direction 91, the first pressure plate 20 is in the over-limit position.

[0032] Specifically, the upper surface of the platform 10 is a flat plane, and the aforementioned loading plane is the upper surface of the platform 10. The loading plane is parallel to the horizontal plane, so that the workpiece to be inspected can be stably placed on the loading plane. The size and shape of the upper surface of the platform 10 are not limited. The workpiece to be inspected can be a battery cell, and its size is not limited.

[0033] In the first direction 91 (i.e. Figure 1 In the vertical direction (as shown in the image), a first pressure plate 20 and a second pressure plate 30 are sequentially arranged above the loading platform 10. The first pressure plate 20 is positioned between the second pressure plate 30 and the loading platform 10, and the three are not in contact with each other. Furthermore, the loading platform 10, the first pressure plate 20, and the second pressure plate 30 are parallel to each other. The vertical projection of the second pressure plate 30 can fall on the first pressure plate 20, and the vertical projection of the first pressure plate 20 can fall on the loading platform 10. That is, in a cross-section perpendicular to the first direction 91, the cross-sectional areas of the second pressure plate 30, the first pressure plate 20, and the loading platform 10 decrease sequentially, and the vertical projection of the former can fall on the cross-section of the latter.

[0034] The first pressing plate 20 can move up and down along the vertical direction. When the first pressing plate 20 moves downward along the vertical direction, the first pressing plate 20 continuously approaches the workpiece to be detected in the vertical direction until the lower surface of the first pressing plate 20 contacts the upper surface of the workpiece to be detected. When the lower surface of the first pressing plate 20 is subjected to the upward vertical resistance generated by the upper surface of the workpiece to be detected, at this time, the lower surface of the first pressing plate 20 is closely attached to the upper surface of the workpiece to be detected, the first pressing plate 20 cannot continue to move downward along the vertical direction of the workpiece platform 10, the first pressing plate 20 keeps relative static with the workpiece to be detected, so that the first pressing plate 20 limits the workpiece to be detected in the first direction 91.

[0035] The first pressing plate 20 and the second pressing plate 30 can be movably connected, and the first pressing plate 20 can move relative to the second pressing plate 30 in the first direction 91. When the first pressing plate 20 is not in contact with the workpiece, the first pressing plate 20 and the second pressing plate 30 can have no relative displacement, and the first pressing plate 20 can be located at a preset position. When the first pressing plate 20 is in contact with the workpiece, the second pressing plate 30 can remain stationary, and the first pressing plate 20 can move towards the second pressing plate 30 under the action of the workpiece support force, so that the second pressing plate 30 and the first pressing plate 20 move relative to each other, and at this time, the first pressing plate 20 can be located at an over-limit position.

[0036] In some embodiments, the detection table further comprises a buffer component 40 movably arranged between the first pressing plate 20 and the second pressing plate 30, and the buffer component 40 can be deformed along the first direction 91, when the first pressing plate 20 moves relative to the second pressing plate 30 in the first direction 91, the buffer component 40 deforms to buffer the pressure of the first pressing plate 20 on the workpiece to be detected.

[0037] The aforementioned buffer component 40 can be an elastic component. Specifically, the elastic component is arranged between the first pressing plate 20 and the second pressing plate 30, and one or more elastic components can be arranged, and two elastic components, i.e., a first elastic component 41 and a second elastic component 42, are preferably arranged in the embodiment. When multiple elastic components are arranged between the first pressing plate 20 and the second pressing plate 30, the elastic components can be uniformly distributed between the first pressing plate 20 and the second pressing plate 30, so that the elastic components uniformly share the tension or pressure between the first pressing plate 20 and the second pressing plate 30, thereby avoiding the situation that the first pressing plate 20 and the second pressing plate 30 are no longer parallel to each other due to uneven force on each elastic component. In the embodiment, the first elastic component 41 and the second elastic component 42 are used to balance the force on the first pressing plate 20 during movement and to stabilize the operation of the first pressing plate 20. The elastic component can be a coil spring or other component capable of generating elastic force. The lower end of the elastic component is fixedly connected to the upper surface of the first pressing plate 20, and the upper end of the elastic component is fixedly connected to the lower surface of the second pressing plate 30. Therefore, the first pressing plate 20 and the second pressing plate 30 are connected through the elastic component, so that the first pressing plate 20 and the second pressing plate 30 can move simultaneously.

[0038] Specifically, when the second pressing plate 30 is pushed downward in the vertical direction, the elastic component is compressed by the second pressing plate 30 at this time, and thus the elastic component applies a downward pushing force in the vertical direction to the first pressing plate 20. Since the lower surface of the first pressing plate 20 has not contacted the workpiece to be detected at this time, the first pressing plate 20 is not subjected to the lifting force in the vertical direction from the workpiece to be detected, and thus the first pressing plate 20 moves downward in the vertical direction of the object platform 10 along with the second pressing plate 30, thereby realizing the simultaneous movement of the first pressing plate 20 and the second pressing plate 30.

[0039] After the first pressing plate 20 and the second pressing plate 30 move downward in the vertical direction by a distance, the lower surface of the first pressing plate 20 contacts the upper surface of the workpiece to be detected. At this time, the elastic component can be compressed in two forms. In one case, the second pressing plate 30 is relatively stationary at this time, the first pressing plate 20 is subjected to the lifting force in the vertical direction from the workpiece to be detected, the lower surface of the first pressing plate 20 is in close contact with the upper surface of the workpiece to be detected, the first pressing plate 20 continues to move upward, the second pressing plate 30 is relatively stationary, the first pressing plate 20 continues to move downward, and thus the elastic component fixedly connected between the first pressing plate 20 and the second pressing plate 30 is compressed. In another case, the lower surface of the first pressing plate 20 is in close contact with the upper surface of the workpiece to be detected at this time, the first pressing plate 20 stops moving, but the second pressing plate 30 continues to move downward in the vertical direction, the first pressing plate 20 is relatively stationary, the second pressing plate 30 continues to move downward, and thus the elastic component fixedly connected between the first pressing plate 20 and the second pressing plate 30 is compressed.

[0040] The elastic component is also used to reduce the force directly acting on the workpiece to be detected when being pressed. Since the second pressing plate 30 is directly fixedly connected with the transmission component 60, and the transmission component 60 exerts a relatively large external force, if the elastic component is not used to provide additional lifting force to the second pressing plate 30 when being pressed, and only the workpiece to be detected is made to bear the downward pressure exerted by the transmission component 60 alone, it is relatively easy to cause damage to the appearance of the surface of the workpiece to be detected, or directly crush the workpiece to be detected, and the workpiece to be detected is functionally damaged. When the workpiece to be detected is an electric core, the elastic component can play a role of buffering the downward force of the cylinder, and is used to reduce the vertical downward pressure directly on the electric core, so as to avoid appearance defects of the electric core or direct crushing of the electric core by the force of the cylinder.

[0041] In some embodiments, the detection table further comprises a sensor 50. Figure 2a Figure 2c A schematic diagram of the position of the sensor of the detection table in the embodiments of the present disclosure is shown. The sensor 50 can be arranged on the first pressing plate 20 and / or the second pressing plate 30, and is used to sense the distance between the first pressing plate 20 and the second pressing plate 30 along the first direction 91, and then detect whether the thickness of the workpiece to be detected is qualified according to the measured distance.

[0042] As shown in Figure 2a , the sensor 50 can be located on the first pressing plate 20; as shown in Figure 2b , the sensor 50 can be located on the second pressing plate 30; as shown in Figure 2c , the sensor 50 can be located on the first pressing plate 20 and the second pressing plate 30. The measurement method of the sensor 50 is not limited, and a single sensor such as a laser ranging sensor can be used to measure the distance, or a plurality of sensors can be combined to measure the distance.

[0043] Figure 3 A structural schematic diagram of the object carrying platform of the detection table in the embodiments of the present disclosure is shown.

[0044] As shown in Figure 3 , in some embodiments, the object carrying platform 10 comprises a limiting component and a carrier plate 12, the object carrying surface is arranged on the carrier plate 12, the limiting component comprises a first limiting component 11 and a second limiting component (not shown in the figure), the first limiting component 11 is arranged on one side of the object carrying surface in a second direction 92, and the second limiting component is arranged on one side of the object carrying surface in a third direction 93, respectively limiting the displacement of the workpiece to be detected in the second direction 92 and the third direction 93; wherein the second direction 92 and the third direction 93 are respectively parallel to the object carrying surface and perpendicular to each other.

[0045] ​The first and second limiting assemblies are not limited in structure, and can use two opposite limiting blocks to clamp the workpiece to be detected, so that the workpiece to be detected is kept relatively stationary in this direction. The first limiting assembly 11 can include a first limiting block 111 and a second limiting block 112, wherein the height of the first limiting block 111 is less than the thickness of the workpiece. The second limiting assembly can refer to the first limiting assembly 11, and will not be described here.

[0046] Specifically, the object platform 10 includes a carrier plate 12 parallel to the object platform 10. During measurement, the workpiece to be detected is placed on the upper surface of the carrier plate 12, i.e., the object plane. The limiting assembly can include a first limiting assembly 11 and a second limiting assembly, and the first limiting assembly 11 is arranged on both sides of the carrier plate 12 in the second direction 92, and the second limiting assembly (not shown in the figure) is arranged on both sides of the carrier plate 12 in the third direction 93. The limiting assembly is used to fix the workpiece to be detected, so that the workpiece to be detected can be stably fixed on the carrier plate 12 during detection.

[0047] The first limiting assembly 11 includes a first limiting block 111 and a second limiting block 112. The first limiting block 111 is fixedly arranged at the edge of the object platform 10 and is perpendicular to the object plane. The second limiting block 112 is arranged opposite to the first limiting block 111 and is perpendicular to the object plane. The first limiting block 111 and the second limiting block 112 are respectively arranged at opposite positions on both sides of the carrier plate 12, and the opposite sides of the first limiting block 111 and the second limiting block 112 are parallel to each other. Further, the opposite sides of the first limiting block 111 and the second limiting block 112 can be provided with rubber pads to increase friction, so as to further stabilize the workpiece to be detected.

[0048] When the first limiting block 111 and the second limiting block 112 clamp the workpiece to be detected, the first limiting block 111 is in close contact with one side of the workpiece to be detected, and the second limiting block 112 is in close contact with the other side of the workpiece to be detected, so that the workpiece to be detected is subjected to the pressure of the first limiting block 111 and the second limiting block 112 on the opposite sides in the second direction 92, thereby fixing the workpiece to be detected on the carrier plate 12.

[0049] In particular, the height of the first limiting block 111 is less than the thickness of the workpiece to be measured. When the workpiece to be measured is placed on the carrier plate 12 but its lower surface is not parallel to the carrier plate 12, the result of the measurement is incorrect because the user fails to place the workpiece to be measured flat. However, in the conventional measurement method, the height of the first limiting block 111 and the second limiting block 112 located on both sides of the workpiece to be measured is obviously higher than the thickness of the workpiece to be measured. Although the workpiece to be measured is in an inclined state, the workpiece to be measured can still be stably clamped, so an incorrect measurement result will be obtained. Since the user does not know that the workpiece to be measured is in an inclined state during measurement, such an incorrect measurement result can be mistakenly believed by the user.

[0050] In the embodiment of the present disclosure, the height of the first limiting block 111 is less than the thickness of the workpiece to be measured. In this case, when the workpiece to be measured is placed on the carrier plate 12 but its lower surface is not parallel to the carrier plate 12, one of the two ends of the side wall of the workpiece to be measured in contact with the first limiting block 111 will not be in contact with the side of the first limiting block 111 facing the workpiece to be measured due to the small height of the first limiting block 111 and the inclined state of the workpiece to be measured. When the workpiece to be measured is subjected to the pressure of the first limiting block 111 and the second limiting block 112, the workpiece to be measured is easily pushed away from the area between the first limiting block 111 and the second limiting block 112 in the direction of the end of the workpiece to be measured that is not in contact with the first limiting block 111, i.e., the end of the workpiece to be measured is pushed onto the upper surface of the first limiting block 111 in the direction of the end of the workpiece to be measured that is not in contact with the first limiting block 111, forming a situation in which the end of the workpiece to be measured is placed on the upper surface of the first limiting block 111. At this time, since the workpiece to be measured has obviously moved, the user can easily know that the workpiece to be measured is not placed flat.

[0051] The second limiting assembly (not shown in the figure) can include a third limiting block and a fourth limiting block. Specifically, the aforementioned third limiting block can be arranged on one side of the carrier platform in the third direction 93, and is fixedly arranged on the edge of the carrier platform 10 and perpendicular to the carrier plane. The fourth limiting block is arranged opposite to the third limiting block and perpendicular to the carrier plane. The third limiting block and the fourth limiting block are respectively arranged at opposite positions on both sides of the carrier plate 12, and the opposite sides of the third limiting block and the fourth limiting block are parallel to each other. Further, the opposite sides of the third limiting block and the fourth limiting block can be provided with rubber pads to increase friction, so as to further stabilize the workpiece to be measured.

[0052] In some embodiments, the object carrier platform 10 further comprises a first transmission assembly 13, which comprises a first telescopic end 131 and a first fixed end 132, wherein the first telescopic end 131 is fixedly connected with the second limit stop 112 and can move along the second direction 92, for adjusting the position of the second limit stop 112 along the second direction 92 to match the size of the workpiece.

[0053] The first transmission assembly 13 is arranged on the side of the second limit stop 112 away from the first limit stop 111 and is connected with the second limit stop 112, for setting the position of the second limit stop 112 on the upper surface of the object carrier platform 10. The first transmission assembly 13 comprises the first telescopic end 131 and the first fixed end 132. The first telescopic end 131 can be a threaded component such as a bolt or a screw. The first telescopic end 131 is fixedly connected with the second limit stop 112, and by adjusting the length of the first telescopic end 131, the second limit stop 112 is driven to move along the second direction 92 to adapt to the size of different workpieces. The first fixed end 132 is stationary relative to the first telescopic end 131 and the second limit stop 112. The first fixed end 132 can be stably arranged on the object carrier platform, or can be movably arranged on the object carrier platform. In this embodiment, the first fixed end 132 is movably arranged on the object carrier platform 10. The lower part of the first fixed end 132 is provided with a plurality of fixed columns, and the object carrier platform is correspondingly provided with a plurality of groups of fixed holes. The fixed columns at the lower part of the first fixed end 132 can be inserted into the fixed holes of the object carrier platform, so that the first fixed end 132 is fixed to the object carrier platform 10. At this time, by adjusting which group of fixed holes the fixed columns are inserted into, the distance between the first limit stop 111 and the second limit stop 112 can be adjusted to a larger extent, and by adjusting the first telescopic end 131, the distance between the first limit stop 111 and the second limit stop 112 can be adjusted to a smaller extent.

[0054] When a user wants to use the first limit stop 111 and the second limit stop 112 to fix a workpiece to be detected, the user first adjusts the first fixed end 132 so that the distance between the first limit stop 111 and the second limit stop 112 is slightly larger than the width of the workpiece to be detected. Then, the user inserts the workpiece to be detected along the side wall of the second limit stop 112, the second limit stop 112 is in close contact with the side wall of the workpiece to be detected, and the bottom surface of the workpiece to be detected is in close contact with the upper surface of the carrier plate 12. Next, the user adjusts the first telescopic end 131 so that the distance between the first limit stop 111 and the second limit stop 112 gradually decreases, and the workpiece to be detected gradually approaches the first limit stop 111. Finally, when the workpiece to be detected is in close contact with the first limit stop 111, the adjustment of the first telescopic end 131 is stopped. At this time, the workpiece to be detected is clamped on two opposite surfaces by the first limit stop 111 and the second limit stop 112, and is fixed on the carrier plate 12.

[0055] In some embodiments, the maximum dimension of the first pressing plate 20 is less than or equal to the minimum dimension of the carrier plate 12.

[0056] Specifically, as shown in Figure 1 , the maximum dimension of the first pressing plate 20 refers to the length of the first pressing plate 20 along the third direction 93, and the minimum dimension of the carrier plate 12 refers to the length of the carrier plate 12 along the second direction 92. When the maximum dimension of the first pressing plate 20 is less than or equal to the minimum dimension of the carrier plate 12, the first pressing plate 20 can completely fall on the carrier plate 12 when the first pressing plate 20 is lowered in the vertical direction, so as to prevent the lower surface of the first pressing plate 20 from colliding with the first limiting assembly 11 or the second limiting assembly during the process of lowering the first pressing plate 20 toward the carrier plate 12 when there is no workpiece to be detected on the carrier plate 12, thereby causing damage to the first limiting assembly 11, the second limiting assembly, or the first pressing plate 20.

[0057] In some embodiments, the sensor 50 includes a first sensor disposed on one of the first pressing plate 20 and the second pressing plate 30, and the measurement direction of the first sensor is toward the other, for measuring the distance between the first pressing plate 20 and the second pressing plate 30 to obtain the measured distance; and / or, the sensor 50 includes a second sensor disposed on one of the first pressing plate 20 and the second pressing plate 30, and the measurement direction of the second sensor is toward the other, for measuring the pressure between the first pressing plate 20 and the second pressing plate 30 to obtain the measured pressure.

[0058] At this time, the first sensor can measure the distance between the first pressing plate 20 and the second pressing plate 30 to obtain the measured distance. Referring to Figure 2a , the first sensor is disposed on the upper surface of the first pressing plate 20, and the measurement direction of the first sensor is perpendicular to the upper surface of the first pressing plate 20 and toward the second pressing plate 30, so as to measure the distance between the first pressing plate 20 and the second pressing plate 30. The first sensor can be a laser ranging sensor. Since the first sensor is disposed on the first pressing plate 20 and the measurement direction of the first sensor is toward the second pressing plate 30 at this time, the first sensor is more convenient for users to disassemble and install.

[0059] Referring to Figure 2b , the first sensor can be disposed on the lower surface of the second pressing plate 30, and the measurement direction of the first sensor is perpendicular to the lower surface of the second pressing plate 30 and toward the first pressing plate 20, so as to measure the distance between the first pressing plate 20 and the second pressing plate 30. The first sensor can be a laser ranging sensor. Since the first sensor is disposed on the second pressing plate 30 and the measurement direction of the first sensor is toward the first pressing plate 20 at this time, the first sensor can avoid falling into dust.

[0060] In addition, a second sensor can be arranged on one of the first pressing plate 20 and the second pressing plate 30, which can be a pressure sensor for measuring the pressure between the first pressing plate 20 and the second pressing plate 30. Since the thickness of the workpiece to be measured is different, the distance between the first pressing plate 20 and the second pressing plate 30 is also different, and therefore the pressure between the first pressing plate 20 and the second pressing plate 30 measured by the pressure sensor is also different. The pressure is inversely related to the distance between the first pressing plate 20 and the second pressing plate 30, that is, the smaller the distance between the first pressing plate 20 and the second pressing plate 30, the greater the pressure measured by the pressure sensor.

[0061] In some embodiments, the first pressing plate 20 and the second pressing plate 30 are movably connected by a connecting shaft 70, one end of the connecting shaft 70 is fixedly connected with the first pressing plate 20, and the other end of the connecting shaft 70 is slidably connected with the second pressing plate 30, and the buffer component 40 is sleeved on the connecting shaft 70.

[0062] Specifically, the second pressing plate 30 is provided with at least one through hole penetrating the second pressing plate 30 in the first direction 91, and the connecting shaft 70 passes through the through hole, so that the first pressing plate 20 and the second pressing plate 30 are movably connected by the connecting shaft 70. The lower end of the buffer component 40 is fixedly connected with the upper surface of the first pressing plate 20, and the upper end of the buffer component 40 is connected with the lower surface of the second pressing plate 30, and at the same time, the buffer component 40 is also sleeved on the side of the connecting shaft 70, so that the buffer component 40 also has the function of protecting the side of the connecting shaft 70. The buffer component 40 can be in contact with the side of the connecting shaft 70, or not in contact with the side of the connecting shaft 70.

[0063] The shape of the through hole can be circular, rectangular, or hexagonal, and is preferably circular. The outer diameter of the through hole is greater than the outer diameter of the connecting shaft 70, so that the connecting shaft 70 can move up and down in the through hole without obstruction.

[0064] Referring to Figure 1 and Figure 4 , the embodiment preferably provides two connecting shafts 70, which are a first connecting shaft 71 and a second connecting shaft 72, respectively passing through different through holes, so that the first pressing plate 20 and the second pressing plate 30 are movably connected by the first connecting shaft 71 and the second connecting shaft 72. The first elastic component 41 is sleeved on the side of the first connecting shaft 71, and the second elastic component 42 is sleeved on the side of the second connecting shaft 72, and the other end of the connecting shaft 70 is close to the first sensor. The first sensor can be arranged near the first connecting shaft 71, can be arranged near the second connecting shaft 72, or two first sensors can be arranged near the first connecting shaft 71 and the second connecting shaft 72, respectively.

[0065] Figure 4A local structure diagram of a region near a sensor of the detection station in the embodiment of the present disclosure is shown.

[0066] In some embodiments, the sensor 50 comprises a shielding member 511 connected to the other end of the connecting shaft 70, the first sensor comprises a first sensing end 5221 and a second sensing end 5222, the first sensing end 5221 and the second sensing end 5222 are oppositely arranged in the second direction 92 to generate induction to each other, the second direction 92 is parallel to the object plane; when the first pressing plate 20 and the second pressing plate 30 have relative displacement in the first direction 91, the connecting shaft 70 drives the shielding member 511 to move along the first direction 91, and the shielding member 511 can be moved between the first sensing end 5221 and the second sensing end 5222 to shield the induction between the first sensing end 5221 and the second sensing end 5222.

[0067] The first sensor comprises a first sensor first component 51 and a first sensor second component 52, the first sensor first component 51 and the first sensor second component 52 are oppositely arranged, and are used to measure the distance between the first pressing plate 20 and the second pressing plate 30 to obtain a measured distance, wherein the first sensor first component 51 is arranged at the top end of the first connecting shaft 71, and the first sensor second component 52 is arranged on the second pressing plate 30.

[0068] At this time, the first sensor first component 51 and the first sensor second component 52 cooperate with each other to measure the distance between the first pressing plate 20 and the second pressing plate 30 to obtain a measured distance. The distance between the first pressing plate 20 and the second pressing plate 30 can be measured only by using the first sensor first component 51, or can be measured by using the first sensor first component 51 and the first sensor second component 52 in cooperation with each other, and the scheme of using the first sensor first component 51 and the first sensor second component 52 in cooperation with each other is preferred. Since the first sensor first component 51 and the first sensor second component 52 are used for measurement at the same time, the scheme can adopt a distance measurement method with lower measurement cost, without the need for an expensive laser distance measurement sensor, thereby reducing the use cost.

[0069] When all or any part of the first sensor is arranged on the upper surface of the first pressing plate 20 or the lower surface of the second pressing plate 30, when the distance between the first pressing plate 20 and the second pressing plate 30 is close, the first sensor or part of the first sensor can be squeezed by the first pressing plate 20 and the second pressing plate 30, causing damage to the first sensor; and because the first component 51 of the first sensor passes through the through hole, the horizontal height is higher than the second pressing plate 30, so even if the distance between the first pressing plate 20 and the second pressing plate 30 is close, the first component 51 of the first sensor does not need to worry about being squeezed by the first pressing plate 20 and the second pressing plate 30, causing damage to the first component 51 of the first sensor.

[0070] The first component 51 of the first sensor is in the shape of a sheet as a whole, and the bottom end is arranged at the top end of the first connecting shaft 71, can pass through the through hole arranged on the second pressing plate 30, and can move up and down in the direction perpendicular to the first pressing plate 20 under the driving of the first connecting shaft 71.

[0071] The second component 52 of the first sensor is arranged on the upper surface of the second pressing plate 30, close to the position of the through hole of the second pressing plate 30 passing through the first component 51 of the first sensor. The second component 52 of the first sensor includes a detection fixing element 521 and a detection main body 522.

[0072] The detection main body 522 can be a U-shaped slot inductor. The detection main body 522 includes a first inductive end 5221 and a second inductive end 5222 arranged opposite in the second direction 92, and the first inductive end 5221 and the second inductive end 5222 are respectively located at both ends of the inner side of the U-shaped slot and can generate induction between each other to detect whether an object blocks between the first inductive end 5221 and the second inductive end 5222. The top end of the first component 51 of the first sensor is provided with a shielding piece 511, which is located in the middle of the U-shaped opening of the detection main body 522, and can generate shielding or no shielding between the first inductive end 5221 and the second inductive end 5222 according to the change of its height, so as to judge the thickness of the workpiece to be detected according to the detection value, and prompt the user through the indicator light arranged on the U-shaped slot inductor. For example, when the workpiece to be detected is a battery cell, the U-shaped slot inductor can be lit or extinguished to inform whether the thickness of the battery cell meets the standard.

[0073] In some embodiments, the sensor 50 further includes a mounting member fixed to the second pressing plate 30, the mounting member including a slidingly connected adjusting portion and a sliding portion extending in the first direction 91, and the first sensor is movably connected to the mounting member through the adjusting portion and can move along the sliding portion in the first direction 91 through the adjusting portion.

[0074] Specifically, the first sensor second assembly 52 comprises a detection fixing element 521 and a detection main body 522 connected with the detection fixing element 521, the detection fixing element 521 is arranged on the surface of the second pressing plate 30 facing away from the first pressing plate 20, the adjusting part can be a sliding block, and the sliding part can be a sliding groove arranged on the detection fixing element 521 and extending in the first direction 91, the sliding groove forms a first sliding rail, and the sliding block is connected with the detection main body 522, so that the detection main body 522 can be connected to the first sliding rail through the sliding block and slide along the first sliding rail, so that the detection main body 522 and the detection fixing element 521 are movably connected.

[0075] The detection fixing element 521 is arranged on the upper surface of the second pressing plate 30 and has an overall L shape, and the L-shaped bottom of the detection fixing element 521 is fixed to the second pressing plate 30 by using a fastening device. The L-shaped side of the detection fixing element 521 is provided with the detection main body 522, and the detection main body 522 has a U shape and is movably connected with the detection fixing element 521. When it is necessary to adjust the vertical height of the detection main body 522 in the first direction 91, the user can conveniently adjust the position.

[0076] It can be understood that, as shown in Figure 1 two first sensors are symmetrically arranged on the upper surface of the second pressing plate 30, and the specific arrangement manner is the same as described above, and will not be repeated here. The two first sensors are symmetrically arranged, so that the thickness of the battery cell on both sides can be measured at the same time, thereby facilitating the accuracy of the measurement. Of course, two second sensors can also be symmetrically arranged between the first pressing plate 20 and the second pressing plate 30 to measure the pressure at different positions between the first pressing plate 20 and the second pressing plate 30 at the same time, thereby also ensuring the accuracy of the thickness measurement of the battery cell.

[0077] In some embodiments, the detection table further comprises a processor electrically connected with the sensor 50 and configured to determine whether the thickness of the workpiece is qualified based on the measured distance and / or the measured pressure.

[0078] Specifically, the processor can be configured to determine whether the thickness of the workpiece is qualified based on the measured distance and a calibration distance, wherein when the distance between the carrier plate 12 and the first pressing plate 20 is exactly the preset thickness, the distance between the first pressing plate 20 and the second pressing plate 30 is the calibration distance, and the value of the distance can be calculated and set before detection, such as by adjusting the height of the shielding piece 511.

[0079] When the measured distance is less than the calibration distance, the thickness of the workpiece is greater than the preset thickness; when the measured distance is equal to the calibration distance, the thickness of the workpiece is equal to the preset thickness; and when the measured distance is greater than the calibration distance, the thickness of the workpiece is less than the preset thickness.

[0080] Wherein, the processor (not shown in the figure) can be set on the detection platform, or a mobile terminal or a computer can be used as the processor. Through the calculation of the processor, the user can directly know the thickness condition of the workpiece to be detected.

[0081] The measured distance is the actual measured height between the first pressing plate 20 and the second pressing plate 30. Through the comparison based on the measured distance and the calibrated distance, the user can judge whether the thickness of the workpiece is qualified. The processor can judge three conditions. When the actual measured distance is less than the calibrated distance, the thickness of the workpiece is greater than the preset thickness; when the actual measured distance is equal to the calibrated distance, the thickness of the workpiece is equal to the preset thickness; and when the actual measured distance is greater than the calibrated distance, the thickness of the workpiece is less than the preset thickness. According to the above conditions, it can be judged whether the workpiece to be detected is qualified. Figures 5a-5c The three measurement condition diagrams of the detection platform in the embodiment of the disclosure are shown. Among them, the workpiece to be detected is between the carrier plate 12 and the first pressing plate 20, d1 is the calibrated distance between the first pressing plate 20 and the second pressing plate 30, d ′ 1 is the actual measured distance between the first pressing plate 20 and the second pressing plate 30, d ′ 2 is the preset thickness of the workpiece, and d

[0082] As Figure 5a shown, when d ′ 1 = d1, that is, when the actual measured distance is equal to the calibrated distance, d ′ 2 = d2, at this time, the actual thickness of the workpiece is equal to the preset thickness of the workpiece. As Figure 5b shown, when d ′ 1 > d1, that is, when the actual measured distance is greater than the calibrated distance, d ′ 2 < d2, at this time, the actual thickness of the workpiece is less than the preset thickness of the workpiece. As Figure 5c shown, when d ′ 1 < d1, that is, when the actual measured distance is less than the calibrated distance, d ′ 2 > d2, at this time, the actual thickness of the workpiece is greater than the preset thickness of the workpiece.

[0083] In addition, the processor can be used to judge whether the thickness of the workpiece is qualified based on the measured pressure and the calibrated pressure, wherein when the distance between the carrier plate 12 and the first pressing plate 20 is exactly the preset thickness, the pressure between the first pressing plate 20 and the second pressing plate 30 is the calibrated pressure, and the value of the pressure can be tested and set before detection.

[0084] When the measured pressure is less than the calibration pressure, the thickness of the workpiece is less than the preset thickness; when the measured pressure is equal to the calibration pressure, the thickness of the workpiece is equal to the preset thickness; and when the measured pressure is greater than the calibration pressure, the thickness of the workpiece is greater than the preset thickness.

[0085] In some embodiments, the detection station further comprises a transmission component 60, which is drivingly connected with the second pressing plate 30 and can drive the second pressing plate 30 to move synchronously with the first pressing plate 20 in the first direction 91.

[0086] Specifically, the transmission component 60 is arranged above the second pressing plate 30 and connected with the second pressing plate 30. The transmission component 60 has a telescopic property in the vertical direction, and can drive the lower end of the transmission component 60 to move up and down in the vertical direction, thereby driving the second pressing plate 30 to move up and down in the vertical direction.

[0087] In some embodiments, the transmission component 60 comprises a cylinder assembly 61 and a fixing assembly 62. The cylinder assembly 61 comprises a cylinder telescopic end 611 and a cylinder main body 612. The fixing assembly 62 comprises a second sliding rail 621. The cylinder telescopic end 611 reciprocates in the vertical direction and is connected with the second pressing plate 30, for driving the second pressing plate 30 to reciprocate in the vertical direction. The cylinder main body 612 is movably connected with the second sliding rail 621 in the vertical direction.

[0088] The cylinder assembly 61 is used to push the second pressing plate 30 to move up and down in the vertical direction of the second pressing plate 30. The cylinder assembly 61 comprises the cylinder telescopic end 611 and the cylinder main body 612. The cylinder telescopic end 611 is located at the bottom of the cylinder assembly 61 and connected with the second pressing plate 30 through fasteners. When the cylinder telescopic end 611 is retracted towards the cylinder main body 612, the cylinder telescopic end 611 drives the second pressing plate 30 to move upwards in the vertical direction. When the cylinder telescopic end 611 is stretched in the direction opposite to the cylinder main body 612, the cylinder telescopic end 611 drives the second pressing plate 30 to move downwards in the vertical direction. The side of the cylinder assembly 61 facing the fixing assembly 62 is provided with a plurality of fixing holes 613, preferably four fixing holes 613, which are arranged at positions corresponding to the second sliding rail 621.

[0089] The fixing assembly 62 is flat and can be arranged on a metal frame arranged in a vertical direction. The fixing assembly 62 comprises a second sliding rail 621, which comprises a plurality of through long slots, preferably two. The width of the long slots is slightly larger than the diameter of the fixing holes 613 on the side of the cylinder assembly 61 facing the fixing assembly 62. The long slots and the fixing holes 613 can be fastened by using fasteners to fix the fixing holes 613 and the long slots to each other, thereby fixing the cylinder assembly 61 and the fixing assembly 62 to each other and tightly fitting the cylinder assembly 61 and the fixing assembly 62. At the same time, since the width of the long slots is slightly larger than the diameter of the fixing holes 613 on the side of the cylinder assembly 61 facing the fixing assembly 62, the user can adjust the position of the cylinder assembly 61 without completely removing the fasteners. When the fasteners are slightly loosened, the user can adjust the relative position of the cylinder assembly 61 relative to the fixing assembly 62, i.e., adjust the vertical height of the cylinder assembly 61, and thus change the distance from the second pressing plate 30 to the object platform 10, thereby meeting the measurement requirements of batteries of different thicknesses.

[0090] While the present disclosure has been illustrated and described with reference to various embodiments thereof, it will be apparent to those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the disclosure. It should be understood that various alternatives to the embodiments of the disclosure described herein can be employed in practicing the disclosure. It is intended that the following claims define the scope of the disclosure and that the method and system herein disclosed in connection with said claims be construed as comprising the equivalents of the generic and specific features recited in the claims.

Claims

1. A testing station for detecting whether the thickness of a workpiece is qualified, characterized in that, The testing station includes: a loading platform (10), a first pressure plate (20), and a second pressure plate (30), wherein, The loading platform (10) has a loading plane for placing the workpiece to be inspected; The first pressure plate (20) and the second pressure plate (30) are arranged parallel to each other and movably connected in a first direction (91). The first pressure plate (20) is disposed between the second pressure plate (30) and the loading platform (10). The first pressure plate (20) and the second pressure plate (30) can be driven in the first direction (91) so that the first pressure plate (20) can limit the workpiece to be tested in the first direction (91). The first direction (91) is perpendicular to the loading plane. The first pressure plate (20) can move relative to the second pressure plate (30) in the first direction (91), and the first pressure plate (20) includes a preset position and an over-limit position, and can switch between the preset position and the over-limit position. When the first pressure plate (20) and the second pressure plate (30) have no relative displacement in the first direction (91), the first pressure plate (20) is in the preset position. When the first pressure plate (20) and the second pressure plate (30) have relative displacement in the first direction (91), the first pressure plate (20) is in the over-limit position.

2. The testing station according to claim 1, characterized in that, The testing station also includes a buffer component (40), which is movably disposed between the first pressure plate (20) and the second pressure plate (30). The buffer component (40) can deform along the first direction (91). When the first pressure plate (20) moves relative to the second pressure plate (30) in the first direction (91), the buffer component (40) deforms to buffer the pressure of the first pressure plate (20) on the workpiece to be tested.

3. The testing station according to claim 2, characterized in that, The testing station also includes a sensor (50), which is disposed on the first pressure plate (20) and / or the second pressure plate (30) for sensing the measurement distance between the first pressure plate (20) and the second pressure plate (30) along the first direction (91) so as to detect whether the thickness of the workpiece to be tested is qualified based on the measurement distance.

4. The testing station according to claim 1, characterized in that, The loading platform (10) includes a limiting component and a carrier plate (12). The loading plane is disposed on the carrier plate (12). The limiting component includes a first limiting component (11) and a second limiting component. The first limiting component (11) is disposed on one side of the loading plane in the second direction (92), and the second limiting component is disposed on one side of the loading plane in the third direction (93), respectively limiting the displacement of the workpiece to be tested in the second direction (92) and the third direction (93); wherein the second direction (92) and the third direction (93) are parallel to the loading plane and perpendicular to each other.

5. The testing station according to claim 3, characterized in that, The sensor (50) includes a first sensor disposed on one of the first pressure plate (20) and the second pressure plate (30), with the measurement direction of the first sensor facing the other, for measuring the distance between the first pressure plate (20) and the second pressure plate (30) to obtain the measured distance; and / or, The sensor (50) includes a second sensor, which is disposed on one of the first pressure plate (20) and the second pressure plate (30), and the measurement direction of the second sensor is towards the other, for measuring the pressure between the first pressure plate (20) and the second pressure plate (30) to obtain the measured pressure.

6. The testing station according to claim 5, characterized in that, The first pressure plate (20) and the second pressure plate (30) are movably connected by a connecting shaft (70). One end of the connecting shaft (70) is fixedly connected to the first pressure plate (20), and the other end of the connecting shaft (70) is slidably connected to the second pressure plate (30). The buffer component (40) is sleeved on the connecting shaft (70).

7. The testing station according to claim 6, characterized in that, The sensor (50) includes a shield (511) connected to the other end of the connecting shaft (70). The first sensor includes a first sensing end (5221) and a second sensing end (5222). The first sensing end (5221) and the second sensing end (5222) are arranged opposite to each other in a second direction (92) to generate a sense between them. The second direction (92) is parallel to the plane of the object. When the first pressure plate (20) and the second pressure plate (30) have relative displacement in the first direction (91), the connecting shaft (70) drives the blocking member (511) to move along the first direction (91) and can move between the first sensing end (5221) and the second sensing end (5222) to block the sensing between the first sensing end (5221) and the second sensing end (5222).

8. The testing station according to claim 7, characterized in that, The sensor (50) further includes a mounting member, which is fixed to the second pressure plate (30). The mounting member includes an adjustment part that is slidably connected and a sliding part that extends along the first direction (91). The first sensor is movably connected to the mounting member through the adjustment part and can be moved along the first direction (91) through the adjustment part and the sliding part.

9. The testing station according to claim 5, characterized in that, The testing station also includes a processor, which is electrically connected to the sensor (50) and is used to determine whether the workpiece thickness is qualified based on the measurement distance and / or the measurement pressure.

10. The testing station according to claim 1, characterized in that, It also includes a transmission component (60), which is drivenly connected to the second pressure plate (30) so that the second pressure plate (30) and the first pressure plate (20) move synchronously in the first direction (91).

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