CN219347663U - Thickness measuring device and production equipment - Google Patents

Abstract

The utility model relates to a thickness measuring device and production equipment, wherein the production equipment comprises a conveying component for conveying elements, and the thickness measuring device comprises a lifting component and a thickness measuring component; the lifting component comprises a lifting piece which is arranged on the production equipment in a lifting manner and is used for lifting or descending elements on the conveying component; the thickness measuring assembly is located above the conveying assembly, and can measure the thickness of the element when the element is lifted to a preset position by the lifting piece. The preset position can be any position between the conveying assembly and the thickness measuring assembly, so long as the lower surface of the element is at the same height when the lifting element is lifted each time. When the thickness of the element is measured, the element can be taken out of the production equipment without manual work or by a mechanical arm, and the operation process is simple and convenient; meanwhile, the lifting piece does not need repeated alignment when lifting or descending the element, and the lifting piece can also be compatible with elements of different sizes and types, so that the production test efficiency can be improved.

Description

Thickness measuring device and production equipment

Technical Field

The utility model relates to the technical field of production test, in particular to a thickness measuring device and production equipment.

Background

In the process of production test of the battery cell, a plurality of test processes are needed, wherein thickness test is one of more important test items. In the existing production process, the battery cell is required to be taken down from the transmission line manually or through a mechanical arm, then the battery cell is put into a standard test tool for independent test, and the battery cell is put into the transmission line again to enter the next procedure after the test is completed. Therefore, the production test process is complex, repeated alignment adjustment is needed when the battery cores with different sizes are produced, and the production test efficiency is low.

Disclosure of Invention

Accordingly, in order to solve the above-mentioned problems, it is necessary to provide a thickness measuring device and a production apparatus, in which the thickness measuring device can complete thickness measurement of elements such as a battery cell without departing from the production apparatus, and can be compatible with elements of different sizes, thereby improving production test efficiency.

The utility model provides a thickness measuring device for production equipment, the production equipment comprises a conveying assembly for conveying elements, the thickness measuring device comprises: a lifting assembly including a lifting member liftably provided to the production facility, the lifting member being for lifting/lowering the element on the transfer assembly; and the thickness measuring assembly is positioned above the conveying assembly and can measure the thickness of the element when the lifting piece lifts the element to a preset position.

In the thickness measuring device, when the element on the conveying component is conveyed to the position corresponding to the lifting component, the lifting component is controlled to lift, after the element is lifted to the preset position, the thickness measuring component starts to measure the thickness of the element, after the measurement is completed, the lifting component is controlled to descend again, and the element is lowered onto the conveying component again. Therefore, the thickness of the element can be measured without taking the element out of production equipment manually or by a manipulator, and the operation process is simple and convenient; meanwhile, the lifting piece does not need repeated alignment when lifting or descending the element, and the lifting piece can also be compatible with elements of different sizes and types, so that the production test efficiency can be improved.

In one embodiment, the lifting assembly comprises at least two lifting pieces, and the two lifting pieces are respectively arranged at two sides of the conveying assembly along the length direction of the conveying assembly; and the distance between the two lifting pieces is larger than the width of the conveying assembly and smaller than the size of the element along the width direction of the conveying assembly.

So set up, the both sides of component can stretch out the both sides of conveying subassembly, and two lifters are located the both sides of conveying subassembly to can support in the lower surface that the component stretches out in the both sides of conveying subassembly.

In one embodiment, the thickness measuring device further comprises a support assembly comprising a support member movably arranged at the production facility, the support member being capable of supporting the element when the lifting member lifts the element to the preset position.

By the arrangement, the stability of the element during measurement can be improved, the lower surface of the element is guaranteed to be at the same height during each measurement, and therefore the measurement accuracy of the thickness of the element is improved.

In one embodiment, the lifting assembly comprises four lifting members, two lifting members are located on the same side of the conveying assembly along the length direction of the conveying assembly, and the distance between the two lifting members located on the same side of the conveying assembly is larger than the size of the supporting member.

So set up, four lifters can support in the four angles of component respectively, guarantee the stability when lifting or descending the component when not interfering with each other with other structures.

In one embodiment, the support member is located at one side of the transfer assembly along a length direction of the transfer assembly and is horizontally movable toward the other side of the transfer assembly to support the component when the lifter lifts the component to the preset position.

So set up, support piece can be when the lifter lifts the component to predetermineeing the position, towards the opposite side horizontal migration of conveying subassembly to pass between two lifters, the component is placed on support piece, and the area of contact between support piece and the component is big, and along vertical direction, support piece's stability is high, thereby can further guarantee the stability of component when measuring thickness.

In one embodiment, the support assembly further comprises a fixture on the other side of the transfer assembly for holding the support horizontal as the support moves to a side adjacent to the fixture.

So set up, the mounting can avoid support piece's one end downward sloping, guarantees support piece's stability to further guarantee the stability of component when measuring thickness.

In one embodiment, the thickness measuring assembly includes an infrared rangefinder capable of emitting infrared light toward the element to measure a distance between the infrared rangefinder and the element.

So set up, the mode cost through infrared range finder thickness measurement is lower, and stability is higher.

In one embodiment, the thickness measuring assembly further comprises a pressing member arranged on the production equipment in a lifting manner, and the pressing member can be pressed down to the upper surface of the element when the lifting member lifts the element to the preset position.

The arrangement is that the pressing piece can level the element on the supporting piece, so that the accuracy of measuring the thickness of the element is improved; meanwhile, the upper surface of the pressing piece is smoother than that of the element, and the thickness of the element can be calculated by measuring the distance between the infrared range finder and the pressing piece, so that the accuracy of measuring the thickness of the element is further improved.

In one embodiment, the thickness measuring device further comprises limiting members located on two sides of the conveying assembly, wherein the limiting members are used for limiting the position of the element on the conveying assembly.

The limiting piece is arranged in such a way that the element is always positioned in the middle of the conveyor belt, so that the lifting piece can be accurately supported at four corners of the element.

The utility model also provides production equipment, which comprises a conveying assembly and the thickness measuring device, wherein the conveying assembly is used for conveying the elements.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings that are required to be used in the description of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic perspective view of a thickness measuring device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the structure of FIG. 1 in a front view according to the present utility model;

FIG. 3 is an enlarged schematic view of the structure shown in FIG. 1A according to the present utility model;

fig. 4 is an enlarged schematic view of the structure at B in fig. 2 provided by the present utility model.

Reference numerals: 1. a lifting assembly; 11. a lifting member; 12. a first driving member; 13. a first flange seat; 2. a thickness measuring assembly; 21. an infrared range finder; 22. a pressing piece; 23. a guide member; 24. a third driving member; 25. a second flange seat; 3. a support assembly; 31. a support; 311. a cross plate; 312. a test board; 313. a protrusion; 32. a fixing member; 33. a second driving member; 4. a limiting piece; 5. a transfer assembly; 51. a conveyor belt; 52. a frame; 6. an element; 7. a frame body; 71. a bottom plate; 72. a top plate; 73. a connecting rod; 74. and a support plate.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used in the description of the present application for purposes of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact of the first feature with the second feature, or an indirect contact of the first feature with the second feature via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The term "and/or" as used in the specification of this application includes any and all combinations of one or more of the associated listed items.

In the production test process of elements such as a battery core, a plurality of test processes are needed, wherein thickness test is one of more important test items. In the existing production process, the battery cell is required to be taken down from the transmission line manually or through a mechanical arm, then the battery cell is put into a standard test tool for independent test, and the battery cell is put into the transmission line again to enter the next procedure after the test is completed. Therefore, the production test process is complex, and the production test efficiency is low because repeated alignment adjustment is needed when the battery cores with different sizes are fed into the conveying line in the test process.

In order to solve the above problems, as shown in fig. 1 to 4, the present utility model firstly provides a thickness measuring device, which can complete thickness testing of components such as a battery cell without separating from production equipment, and can be compatible with components of different sizes, thereby improving production test efficiency.

As shown in fig. 1 to 2, in particular, the thickness measuring device is used for production equipment, the production equipment comprises a conveying assembly 5 for conveying elements 6, and the thickness measuring device comprises a lifting assembly 1 and a thickness measuring assembly 2; the lifting assembly 1 comprises a lifting member 11 arranged on the production equipment in a lifting manner, wherein the lifting member 11 is used for lifting or lowering the element 6 on the conveying assembly 5; the thickness measuring assembly 2 is located above the conveying assembly 5, and the thickness measuring assembly 2 can measure the thickness of the element 6 when the lifting member 11 lifts the element 6 to a preset position. The preset position may be any position between the conveying assembly 5 and the thickness measuring assembly 2, as long as the lifting member 11 is ensured to be at the same height on the lower surface of the element 6 each time the element 6 is lifted.

As described above, in the production test process of the existing components such as the battery core, the components are required to be manually or by a manipulator to be taken down from the transmission line, then the components are put into the standard test tool for separate test, and the components are put into the transmission line again to enter the next procedure after the test is completed, so that the production test process is complex, and the repeated alignment adjustment is required when the components with different sizes are produced, so that the production test efficiency is low. In the thickness measuring device provided by the embodiment of the utility model, when the element 6 on the conveying component 5 is conveyed to correspond to the lifting component 1, the lifting component 11 is controlled to lift and lift the element 6 to a preset position, the thickness measuring component 2 starts to measure the thickness of the element 6, and after the measurement is completed, the lifting component 11 is controlled to descend again and the element 6 is lowered onto the conveying component 5 again, and the element 6 is conveyed to the next station through the conveying component 5. Therefore, the thickness of the element 6 can be measured without taking the element 6 out of the production equipment manually or by a manipulator, the operation process is simple and convenient, the production test efficiency can be improved, and the normal operation of the conveying assembly 5 can not be influenced in the measurement process. Meanwhile, the lifting piece 11 does not need repeated alignment when lifting or descending the element 6, and can also be compatible with elements 6 with different sizes and types, so that the time for replacing the fixture is shortened, and the production test efficiency is further improved. In addition, the fully-automatic production environment can also effectively reduce false judgment caused by manpower, and can effectively save related production information for production tests of products such as the element 6 and the like, thereby helping the follow-up tracing in the later period.

The element 6 may be a cell, or may be a plate or other element that needs to be tested for thickness during the production process. The conveyor assembly 5 may be provided as a conveyor belt 51 as shown, or may be provided as other conveying structures such as a roller conveyor structure, a chain conveyor structure, etc., as long as it can be used to convey the components 6 within the production facility.

As shown in fig. 1, the thickness measuring device further includes a frame body 7 disposed on the production equipment, the frame body 7 includes a bottom plate 71 disposed horizontally, and a top plate 72 disposed parallel to the bottom plate 71 and located on the upper side of the bottom plate 71, the lifting assembly 1 is disposed on the bottom plate 71, the thickness measuring assembly 2 is disposed on the top plate 72, and the conveying assembly 5 is disposed between the bottom plate 71 and the top plate 72. The top plate 72 and the bottom plate 71 can be fixedly connected with production equipment respectively, or can be fixed with high precision through the connecting rod 73, and then the whole is fixedly connected with the production equipment, so that the measurement precision and stability of the thickness measuring device are improved.

As shown in fig. 2, the lifting assembly 1 comprises at least two lifting members 11, and the two lifting members 11 are respectively arranged at two sides of the conveying assembly 5 along the length direction of the conveying assembly 5; the two lifting members 11 may be supported at the bottom of the element 6, or may be two sides of the clamping element 6, so as to drive the element 6 to lift synchronously while lifting. When the two lifters 11 are supported on the bottom of the element 6, the distance between the two lifters 11 is larger than the width of the conveyor 5 and smaller than the size of the element 6 in the width direction of the conveyor 5. Thus, the element 6 is sized to be larger than the width of the transfer assembly 5, and the two sides of the element 6 extend beyond the two sides of the transfer assembly 5, and the two lifting members 11 are also located on the two sides of the transfer assembly 5 and can be supported on the lower surface of the element 6 extending beyond the two sides of the transfer assembly 5.

In the illustrated embodiment, the lifting assembly 1 comprises four lifting members 11, two lifting members 11 being located on the same side of the transfer assembly 5 along the length of the transfer assembly 5, the four lifting members 11 being supportable at four corners of the element 6 respectively to ensure stability in lifting or lowering the element 6. In other embodiments, the lifting assembly 1 may also include 3, 5, 6 or more lifting members 11, so long as the stability of the element 6 can be ensured during lifting, without being particularly limited herein.

As shown in fig. 2, the lifting assembly 1 further includes a first driving member 12 disposed on the bottom plate 71, where the first driving member 12 is used to drive the lifting member 11 to lift. In order to avoid the interference between the first driving member 12 and the conveying assembly 5, the first driving member 12 is disposed on a side of the bottom plate 71 facing away from the conveying assembly 5. The bottom plate 71 is provided with through holes corresponding to the number of the lifting members 11, and the lifting assembly 1 further comprises first flange seats 13 corresponding to the number and positions of the through holes. In the illustrated embodiment, the bottom plate 71 is provided with four through holes arranged at intervals, and four first flange seats 13 provided corresponding to the through holes. Each lifting piece 11 movably penetrates through one of the through holes and the first flange seat 13, and the first flange seat 13 is used for improving stability of the lifting piece 11 during lifting and avoiding swinging of the lifting piece 11. The first driving member 12 may be a linear driving structure such as a cylinder, a screw nut structure, a rail slider structure, or the like.

As shown in fig. 1 to 2, the thickness measuring device further comprises a support assembly 3, and the support assembly 3 comprises a support member 31 movably arranged on the production equipment. The frame 7 further includes a support plate 74 disposed parallel to the bottom plate 71 and located at one side of the transfer assembly 5, and the support assembly 3 further includes a second driving member 33 disposed at the support plate 74, the second driving member 33 being for driving the support member 31. The support plate 74 may be fixedly connected to the production facility, or may be fixed to the bottom plate 71 and the top plate 72 with high precision by the link 73. The support 31 can be moved to the bottom of the element 6 to support the element 6 when the lifter 11 lifts the element 6 to a preset position. This can improve the stability of the element 6 during measurement and ensure that the lower surface of the element 6 is at the same height for each measurement, thereby improving the accuracy of measuring the thickness of the element 6. The second driving member 33 may be a linear driving structure such as a cylinder, a screw nut structure, a rail slider structure, or the like.

As shown in fig. 1 and 3, when the four lifting members 11 are respectively supported at the four corners of the element 6, the lower part of the element 6 is in a suspended state, and at this time, the distance between the two lifting members 11 located at the same side of the conveying assembly 5 is larger than the size of the supporting member 31, so that the supporting member 31 can pass through between the two lifting members 11. The supporting member 31 can horizontally move toward the other side of the transfer assembly 5 and pass through between the two lifting members 11 when the lifting members 11 raise the element 6 to a preset position, at this time, the first driving member 12 drives the lifting members 11 to descend, the element 6 is placed on the supporting member 31, the lifting members 11 are separated from the element 6, and the supporting member 31 can support the element 6. The contact area between the support 31 and the element 6 is large and the stability of the support 31 is higher in the vertical direction than the stability of the lifting member 11 and the transfer assembly 5, so that the stability of the element 6 in measuring the thickness can be further ensured. After the measurement is completed, the first driving member 12 drives the lifting member 11 again to lift and support the element 6, the supporting member 31 moves toward the side away from the conveying assembly 5 to reset, and the supporting member 31 is separated from the element 6.

Specifically, the supporting member 31 includes a transverse plate 311 and a test plate 312, the transverse plate 311 is movably disposed on the supporting plate 74, and the test plate 312 is fixedly disposed on top of the transverse plate 311. The test board 312 is used for placing the components 6 thereon, and the structure and materials of the test board 312 can be selected according to the components 6. The transverse plate 311 is a metal piece to ensure the strength of the supporting piece 31 and avoid the bending phenomenon of the supporting piece 31 in the use process. When the element 6 is lifted to the preset position, the lower surface of the element 6 may be equal to the upper surface of the test board 312, or the lower surface of the element 6 is slightly higher than the upper surface of the test board 312, so as to avoid interference between the test board 312 and the element 6 during the movement process.

As shown in fig. 1 and 3, the support assembly 3 further includes a fixing member 32 at the other side of the transfer assembly 5, and the fixing member 32 is used to keep the support member 31 horizontal when the support member 31 moves to a side close to the fixing member 32. The fixing member 32 may be fixedly connected to the production facility, or may be fixed to the bottom plate 71 and the top plate 72 with high precision by a link 73. In the illustrated embodiment, the protruding portion 313 is disposed on one side of the transverse plate 311 facing the fixing member 32, the recess (not shown) capable of being matched with the protruding portion 313 is disposed on one side of the fixing member 32 facing the transverse plate 311, and when the supporting member 31 moves to a side close to the fixing member 32, the protruding portion 313 can be in plug-in fit with the recess, so that the downward inclination of one end of the transverse plate 311 and the testing plate 312 away from the supporting plate 74 is avoided, the stability of the supporting member 31 is ensured, and the stability of the element 6 in thickness measurement is further ensured. In other embodiments, the cross plate 311 and the fixing member 32 may be positioned by magnetic attraction or the like. At this time, the fixing member 32 is at the same height as the cross plate 311. Of course, the cross plate 311 may overlap the upper surface of the fixture 32 when moving to the side closer to the fixture 32, and the lower surface of the cross plate 311 may be flush with the upper surface of the fixture 32.

As shown in fig. 4, in one embodiment, the thickness measuring assembly 2 includes an infrared rangefinder 21 fixedly disposed on a top plate 72, the infrared rangefinder 21 being capable of emitting infrared light toward the element 6 to measure the distance between the infrared rangefinder 21 and the element 6. Since the position of the infrared rangefinder 21 is fixed, and the position of the lower surface of the element 6 is fixed after the lifter 11 lifts the element 6 each time, the distance between the infrared rangefinder 21 and the lower surface of the element 6 is fixed, the infrared rangefinder 21 can strike the upper surface of the element 6 through the blind hole, the distance between the infrared rangefinder 21 and the upper surface of the element 6 is measured by reflection or the like, and finally the thickness of the element 6 is calculated after subtracting the distance between the infrared rangefinder 21 and the upper surface of the element 6 from the distance between the infrared rangefinder 21 and the lower surface of the element 6. In other embodiments, the thickness measuring assembly 2 may also directly measure the thickness of the element 6 by scanning or the like, but the physical thickness measuring method has lower cost and higher stability than the scanning thickness measuring method.

Specifically, the thickness measuring assembly 2 further comprises a pressing piece 22 and a guiding piece 23 which are arranged on the production equipment in a lifting manner, the thickness measuring assembly 2 further comprises a third driving piece 24 arranged on the top plate 72, the top plate 72 is provided with through holes, and the thickness measuring assembly 2 further comprises second flange seats 25 which are arranged corresponding to the number and the positions of the through holes on the top plate 72. The guide piece 23 movably penetrates through the through hole in the top plate 72 and the second flange seat 25, and the second flange seat 25 is used for improving stability of the guide piece 23 during lifting and lowering and avoiding swinging of the guide piece 23. The lower pressing piece 22 is disposed at one end of the guiding piece 23 near the conveying assembly 5, and the third driving piece 24 is used for driving the guiding piece 23 and the lower pressing piece 22 to lift. In order to avoid the interference between the third driving member 24 and the conveying assembly 5, the third driving member 24 is disposed on a side of the top plate 72 facing away from the conveying assembly 5. The third driving member 24 may be a linear driving structure such as a cylinder, a screw nut structure, a rail slider structure, or the like. When the elevating member 11 elevates the component 6 to a predetermined position, the third driving member 24 drives the pressing member 22 to descend and press down to the upper surface of the component 6 to planarize the component 6 on the supporting member 31, improving accuracy of thickness measurement of the component 6.

In the illustrated embodiment, the pressing member 22 may be provided in a plate-shaped structure, the number of the guide members 23 is four, the four guide members 23 are respectively connected with four corners of the pressing member 22, four through holes corresponding to the guide members 23 are formed in the top plate 72, and the four guide members 23 can ensure that the pressing member 22 is stable and balanced when being lifted, so that the pressing member 22 is prevented from shaking or tilting to affect the thickness measurement result of the element 6. Of course, in other embodiments, the number of the guides 23 may be 1, 2, 3 or more, as long as stability and balance of the guides 23 at the time of lifting can be ensured.

Because the thickness of the lower pressing piece 22 is also fixed, and the upper surface of the lower pressing piece 22 is smoother than the element 6, after the lower pressing piece 22 is pressed down to the upper surface of the element 6, the infrared distance meter 21 can shoot to the upper surface of the lower pressing piece 22 through the blind hole, the distance between the infrared distance meter 21 and the upper surface of the lower pressing piece 22 is measured through reflection and the like, and the thickness of the element 6 is calculated by subtracting the distance between the infrared distance meter 21 and the upper surface of the lower pressing piece 22 from the distance between the infrared distance meter 21 and the lower surface of the element 6 and the thickness of the lower pressing piece 22, so that the accuracy of measuring the thickness of the element 6 is further improved.

As shown in fig. 2, the thickness measuring device further comprises limiting members 4 located at both sides of the transfer assembly 5, wherein the limiting members 4 are used for limiting the position of the element 6 on the transfer assembly 5. In the illustrated embodiment, the conveying assembly 5 includes a conveying belt 51 and frames 52 located at two sides of the conveying belt 51, two limiting members 4 are respectively fixed on the frames 52 at two sides through fasteners such as screws, and the limiting members 4 enable the element 6 to be located at the middle position of the conveying belt 51 all the time, so that the lifting members 11 can be accurately supported at four corners of the element 6. In other embodiments, the limiting member 4 may be fixed to other positions of the production apparatus or fixed to the frame 7.

The utility model also provides production equipment, which comprises the conveying component 5 and the thickness measuring device, wherein the conveying component 5 is used for conveying the element 6, and the thickness measuring device is arranged on the production equipment through the frame body 7. The thickness measuring device of the production equipment is directly integrated into the whole industrial process flow, so that the element 6 can be prevented from being separated from the conveying line in the production test process. The production equipment can be cell production equipment for producing cells; of course, the present utility model may be applied to an apparatus for producing other components such as a plate member, etc. which need to be measured in the production process, and is not particularly limited herein.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of the present application is to be determined by the following claims.

Claims (10)

1. Thickness measuring device for a production plant comprising a conveying assembly (5) for conveying elements (6), characterized in that it comprises:

a lifting assembly (1) comprising a lifting member (11) arranged liftably to the production device, the lifting member (11) being adapted to raise/lower the element (6) on the transfer assembly (5); and

the thickness measuring assembly (2) is located above the conveying assembly (5), and the thickness measuring assembly (2) can measure the thickness of the element (6) when the lifting piece (11) lifts the element (6) to a preset position.

2. The thickness measuring device according to claim 1, wherein the lifting assembly (1) comprises at least two lifting members (11), and the two lifting members (11) are respectively arranged at two sides of the conveying assembly (5) along the length direction of the conveying assembly (5);

the distance between the two lifting pieces (11) is larger than the width of the conveying assembly (5) and smaller than the size of the element (6) along the width direction of the conveying assembly (5).

3. The thickness measuring device according to claim 1 or 2, further comprising a support assembly (3), the support assembly (3) comprising a support (31) movably arranged to the production equipment, the support (31) being capable of supporting the element (6) when the lifting member (11) lifts the element (6) to the preset position.

4. A thickness measuring device according to claim 3, wherein the lifting assembly (1) comprises four lifting members (11), two lifting members (11) are located on the same side of the conveying assembly (5) along the length direction of the conveying assembly (5), and the distance between two lifting members (11) located on the same side of the conveying assembly (5) is larger than the size of the supporting member (31).

5. A thickness measuring device according to claim 4, wherein the support member (31) is located on one side of the transfer member (5) along the length of the transfer member (5) and is capable of moving horizontally towards the other side of the transfer member (5) to support the element (6) when the lifting member (11) lifts the element (6) to the preset position.

6. The thickness measuring device according to claim 5, wherein the support assembly (3) further comprises a fixing member (32) located at the other side of the transfer assembly (5), the fixing member (32) being adapted to keep the support member (31) horizontal when the support member (31) moves to a side close to the fixing member (32).

7. Thickness measuring device according to claim 1, characterized in that the thickness measuring assembly (2) comprises an infrared rangefinder (21), which infrared rangefinder (21) is capable of emitting infrared light towards the element (6) for measuring the distance between the infrared rangefinder (21) and the element (6).

8. The thickness measuring device according to claim 7, wherein the thickness measuring assembly (2) further comprises a hold-down piece (22) liftably provided to a production apparatus, the hold-down piece (22) being capable of being pressed down to an upper surface of the element (6) when the lifter (11) lifts the element (6) to the preset position.

9. The thickness measuring device according to claim 1, further comprising a stop (4) on both sides of the transfer assembly (5), the stop (4) being adapted to limit the position of the element (6) on the transfer assembly (5).

10. Production plant, characterized by comprising a conveying assembly (5) and a thickness measuring device according to any one of claims 1 to 9, the conveying assembly (5) being intended to convey the element (6).

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