Weight measuring instrument off-line verification tool

Abstract

The utility model belongs to the technical field of battery manufacturing, and particularly relates to a weighing instrument off-line verification tool, which comprises a fixing frame and a mounting frame, and is characterized in that the fixing frame is arranged at a scanning position in a weighing instrument; a pole piece can be clamped on the mounting frame, and the mounting frame is detachably connected with the fixing frame; when the mounting frame is connected with the fixing frame, the pole piece is located at the scanning position; compared with the prior art, the tool provided by the utility model is higher in calibration efficiency of the weight measuring instrument and lower in calibration cost.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery manufacturing technical field especially relates to a kind of off-line verification tool of weighing instrument. BACKGROUND

[0002] The weighing of weighing instrument is realized by the absorption and reflection effect of X / β ray penetrating matter, which is a non-contact measurement of film surface density. In the coating process of battery electrode sheet, the weight of the electrode sheet is measured by the weighing instrument. With the extension of time, X / β ray will attenuate, which will affect the measurement of surface density to some extent. Therefore, it is necessary to regularly calibrate the weighing instrument. The calibration of the weighing instrument is to compensate the measured value, which is a process to eliminate equipment error and deviation.

[0003] Currently, the calibration method of the weighing instrument is to coat a section of electrode sheet with little difference from the target surface density. The electrode sheet is stopped under the scanning device, and the automatic scanning is started. After the weighing instrument scans the fixed area, the scanning position is labeled. The labeled section is moved to the winding position, and then sampling is performed at the winding position. The sampler is used to sample the scanning position, and then the weight is measured. After weighing, the manual measurement value is compared with the machine measurement value. The manual measurement value is used as the standard to compensate the surface density of the weighing instrument. However, this calibration method is time-consuming and consumes a lot of electrode sheets, which has high calibration cost. UTILITY MODEL CONTENT

[0004] The utility model aims at the above-mentioned technical problems, and provides an off-line verification tool of weighing instrument. The calibration efficiency of the tool for the weighing instrument is higher, and the calibration cost is lower.

[0005] Therefore, the utility model provides an off-line verification tool of weighing instrument, which comprises:

[0006] The fixing frame is arranged at the scanning position in the weighing instrument.

[0007] The mounting frame can clamp the electrode sheet, and the mounting frame is detachably connected with the fixing frame.

[0008] When the mounting frame is connected with the fixing frame, the electrode sheet is located at the scanning position.

[0009] In the technical scheme, a section of electrode sheet is taken at the winding position of the continuous electrode sheet, placed on the mounting frame and clamped, and then the mounting frame is connected to the fixing frame, so that the electrode sheet is located at the scanning position. At this time, the weighing instrument is adjusted to the calibration mode, the weighing instrument scans the electrode sheet to obtain the machine measurement value, then the mounting frame is taken off from the fixing frame, the electrode sheet is sampled and weighed to obtain the manual measurement value, and finally the manual measurement value is compared with the machine measurement value. The surface density of the weighing instrument is compensated according to the manual measurement value.

[0010] Further, the fixing frame is in a U shape as a whole, and the top of the fixing frame is provided with a dismounting piece connected with the mounting frame.

[0011] Further, the dismounting piece comprises two positioning grooves arranged on the top of the fixing frame, the two positioning grooves are distributed along the third direction on the fixing frame, and the two positioning grooves are both penetrated through the inner side wall of the fixing frame along the second direction, and the spacing between the two positioning grooves is matched with the width of the mounting frame along the third direction.

[0012] Further, the dismounting piece comprises a connecting frame, a swing claw and a torsion spring, the connecting frame is arranged on the top of the fixing frame, the middle part of the swing claw is rotationally connected with the connecting frame, the bottom of one end of the swing claw is provided with a recess capable of clamping the mounting frame, one end of the torsion spring is connected with the connecting frame, and the other end of the torsion spring is connected with the swing claw.

[0013] Further, the dismounting piece comprises a connecting frame, a swing claw and a gas cylinder, the connecting frame is arranged on the top of the fixing frame, the middle part of the swing claw is rotationally connected with the connecting frame, the bottom of one end of the swing claw is provided with a recess capable of clamping the mounting frame, the fixed end of the gas cylinder is arranged on the side wall of the fixing frame, and the movable end of the gas cylinder is connected with the end of the swing claw away from the recess.

[0014] Further, the mounting frame comprises a frame body and a clamping piece, and the clamping piece can clamp and fix the pole piece on the frame body.

[0015] Further, the clamping piece comprises a plurality of elastic clamping pieces, the elastic clamping pieces are arranged on one side of the frame body, the elastic clamping piece comprises two clamping strips, the clamping strips are elastic, the first ends of the two clamping strips are connected with the frame body, and the second ends of the two clamping strips are close to each other along the first direction to form a clamping part.

[0016] Further, the clamping piece comprises two groups of elastic clamping pieces, and the two groups of elastic clamping pieces are respectively arranged on two sides of the frame body.

[0017] Further, the width of the clamping strip along the second direction is greater than half of the width of the frame body along the second direction.

[0018] Further, the clamping piece comprises two groups of movable clamping pieces, and the two groups of movable clamping pieces are respectively arranged on two sides of the frame body, the movable clamping piece comprises a fixed plate, a positioning plate, a pressing plate and a threaded rod, the fixed plate and the positioning plate are distributed along the first direction on the frame body, the fixed plate is provided with a threaded hole, the pressing plate is arranged between the fixed plate and the positioning plate, the threaded rod is threadedly connected with the threaded hole, and one end of the threaded rod is connected with the pressing plate.

[0019] The utility model discloses the beneficial effect is:

[0020] 1. The fixed frame, the mounting frame is used for fixing a small piece of pole piece at the scanning position in the weighing instrument, so that the calibration can be completed by taking a pole piece of about 1m in length when the weighing instrument is calibrated, the amount of pole piece consumed is less, and the calibration cost is lower.

[0021] 2. The fixed frame is fixed in the weighing instrument, and only the mounting frame needs to be transferred during calibration, and the mounting frame has a small volume and is convenient to transfer, and it is easy to fix the pole piece on the mounting frame and take the pole piece off the mounting frame, so the pole piece can be fixed on the mounting frame before the weighing instrument is calibrated, so that the mounting frame clamping the pole piece can be connected to the fixed frame when the weighing instrument needs to be calibrated, and the calibration can be started, time cost is saved, and the calibration efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 It is a normal scanning state diagram of the weighing instrument in the present application.

[0024] Figure 2 It is a calibration state diagram of the weighing instrument in the present application.

[0025] Figure 3 It is two kinds of scanning trajectories of the weighing instrument relative to the pole piece in the present application.

[0026] Figure 4 It is a disassembled state diagram of the fixed frame and the mounting frame in the present application.

[0027] Figure 5 It is a first connection mode diagram of the fixed frame and the mounting frame in the present application.

[0028] Figure 6 It is a second connection mode diagram of the fixed frame and the mounting frame in the present application.

[0029] Figure 7 It is Figure 6 It is a local enlarged structure diagram of A in the present application.

[0030] Figure 8 It is a third connection mode diagram of the fixed frame and the mounting frame in the present application.

[0031] Figure 9The first structure schematic view of the mounting frame clamping the pole piece.

[0032] Figure 10 The second structure schematic view of the mounting frame clamping the pole piece.

[0033] Figure 11 The third structure schematic view of the mounting frame clamping the pole piece.

[0034] The figure mark is:

[0035] 100, the weight measuring instrument;200, the scanning module;300, the guide roller;400, the pole piece;1, the fixed frame;101, the positioning groove;102, the connecting frame;103, the swing claw;104, the recess;105, the air cylinder;2, the frame body;3, the clamping piece;301, the clamping strip;302, the fixed plate;303, the positioning plate;304, the pressing plate;305, the threaded hole;306, the threaded rod;X, the first direction;Y, the second direction;Z, the third direction; DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] In the description of the present application, it should be noted that the terms used herein are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. In order to facilitate the description, the sizes of the parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those skilled in the art may not be discussed in detail, but should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0038] The schematic diagram of the weight measuring instrument 100 in the present application is as follows: Figures 1-2As shown, two groups of scanning modules 200 are arranged at intervals in the first direction X in the weight measuring instrument 100, and the pole piece 400 can pass between the two groups of scanning modules 200. The scanning module 200 can scan the surface of the pole piece 400, and a guide roller 300 is arranged on both sides of the scanning module 200. The guide roller 300 is used to guide the continuous pole piece 400, Figure 1 As shown, the weight measuring instrument 100 is in a normal weight measuring state of the continuous pole piece 400, Figure 2 As shown, the weight measuring instrument 100 is in a normal weight measuring state of the continuous pole piece 400,

[0039] The weight measuring instrument 100 can be selected from products on the market. The working mode of the weight measuring instrument 100 includes a scanning mode and a calibration mode.

[0040] In the scanning mode, the weight measuring instrument 100 can scan and measure the weight of the continuous pole piece 400. In this process, the pole piece 400 moves relative to the weight measuring instrument 100 in the third direction Z, and the scanning module 200 reciprocally moves relative to the pole piece 400 in the second direction Y. At this time, the scanning trajectory of the weight measuring instrument 100 relative to the pole piece 400 is as shown in the upper trajectory diagram, Figure 3 In the traditional calibration mode, when the weight measuring instrument 100 is in the calibration mode, a section of single-sided pole piece 400 and a section of double-sided pole piece 400 are first coated, and then the single-sided pole piece 400 and the double-sided pole piece 400 are respectively stopped between the two groups of scanning modules 200 in the weight measuring instrument 100. Automatic scanning is started, and the position of scanning is marked. Then, the coating machine is started to transfer the marked position on the pole piece 400 to the winding position. Sampling is taken at the winding position for manual measurement. The scanning trajectory of the weight measuring instrument 100 relative to the pole piece 400 is the same as that in the scanning mode. The entire calibration process requires about 60 m of single-sided coated pole piece 400 and double-sided coated pole piece 400.

[0041] Embodiment 1

[0042] The embodiment provides a weight measuring instrument offline calibration tool, which comprises a fixing frame 1 and a mounting frame.

[0043] Please refer to Figure 1 The fixing frame 1 is arranged at a scanning position in the weight measuring instrument 100. The scanning position here refers to the outside of the two groups of scanning modules 200. The fixing frame 1 does not affect the normal scanning and weight measuring of the continuous pole piece 400 by the scanning module 200 in the normal coating operation of the weight measuring instrument 100.

[0044] The mounting frame is annular as a whole. The mounting frame can clamp the pole piece 400. The length of the pole piece 400 clamped each time is slightly smaller than the width of the mounting frame in the third direction Z. The mounting frame is detachably connected with the fixing frame 1. Please refer to Figure 1 When the weight measuring instrument 100 normally scans and measures the weight of the continuous pole piece 400, the mounting frame is separated from the fixing frame 1. Please refer toFigure 2 When the weighing instrument 100 is calibrated, the mounting frame is connected with the fixing frame 1, and when the mounting frame is connected with the fixing frame 1, the pole piece 400 clamped on the mounting frame is located at a scanning position, where the scanning position refers to that the pole piece 400 is located between the two groups of scanning modules 200;

[0045] The pole piece 400 is clamped and fixed by the mounting frame, which can prevent the pole piece 400 from being wrinkled;

[0046] In this embodiment, the separation state of the mounting frame and the fixing frame 1 is shown in Figure 4 , and the connection state of the mounting frame and the fixing frame 1 is shown in Figure 5 ;

[0047] By setting the fixing frame 1 in the scanning area of the weighing instrument 100 and the mounting frame which can be separated from the fixing frame 1, when the weighing instrument 100 needs to be calibrated, the pole piece 400 to be measured is prepared in advance, and generally the length of the pole piece 400 to be measured is about 1 m. After the pole piece 400 to be measured is clamped by the mounting frame, the mounting frame is placed on the fixing frame 1, and the scanning module 200 of the weighing instrument 100 is started to measure the area density of the pole piece 400 to be measured. The scanning trajectory of the scanning module 200 relative to the pole piece 400 to be measured is shown in the trajectory diagram below Figure 3 , and the trajectory is a straight line. The area density of the pole piece 400 to be measured can be measured before or after the pole piece 400 to be measured is placed in the weighing instrument. Finally, by comparing the manual measurement value with the machine-side value measured by the scanning module 200 of the weighing instrument 100, the weighing instrument 100 is adjusted.

[0048] Compared with the traditional calibration method which causes waste of the pole piece 400, this method only needs to place the pole piece 400 prepared in advance in the weighing instrument 100 to measure the area density value, without the need for the coating equipment to coat the pole piece 400 for a certain distance for the area density value measurement of the weighing instrument 100. Moreover, the mounting frame clamping the pole piece 400 to be measured can be taken out from the fixing frame 1, and it does not interfere with the normal operation of the weighing instrument 100 when the coating equipment is working normally, thereby reducing the calibration cost.

[0049] Embodiment 2

[0050] The embodiment provides a weighing instrument offline calibration tool, and on the basis of the embodiment 1, a first structure of the connection of the fixing frame 1 and the mounting frame is disclosed;

[0051] Please refer to Figure 4 , the fixing frame 1 is in a U shape, and the top of the fixing frame 1 is provided with a dismounting piece connected with the mounting frame;

[0052] Specifically, please refer to Figure 4The dismounting piece comprises two positioning grooves 101 arranged on the top of the fixing frame 1, the two positioning grooves 101 are spaced apart along the third direction Z on the fixing frame 1, and the two positioning grooves 101 each penetrate the inner side wall of the fixing frame 1 along the second direction Y, and the spacing between the two positioning grooves 101 is adapted to the width of the mounting frame along the third direction Z;

[0053] Please refer to Figure 5 When connecting the mounting frame with the fixing frame 1, the mounting frame is only needed to be close to the fixing frame 1 along the first direction X, and the outer side wall of the mounting frame is contacted with the side wall of the two positioning grooves 101;

[0054] The connecting mode of the fixing frame 1 and the mounting frame in the embodiment is simple in structure and convenient to mount and dismount.

[0055] Embodiment 3

[0056] The embodiment discloses a second structure of connecting the fixing frame 1 with the mounting frame;

[0057] The difference from the embodiment 2 is that the dismounting piece in the embodiment comprises a connecting frame 102, a swing claw 103 and a torsion spring (not shown in the figure),

[0058] Please refer to Figure 6 The connecting frame 102 is arranged on the top of the fixing frame 1, the swing claw 103 is rotationally connected to the connecting frame 102 at the middle part, the bottom surface of one end of the swing claw 103 is provided with a recess 104 capable of clamping the mounting frame, and the structure of the recess 104 can be referred to Figure 7 One end of the torsion spring is connected with the connecting frame 102, and the other end of the torsion spring is connected with the swing claw 103;

[0059] A plurality of dismounting pieces are arranged on the fixing frame 1, when the plurality of dismounting pieces are distributed along the diagonal direction, two groups of dismounting pieces can be arranged to complete the fixing of the mounting frame, and four groups of dismounting pieces are taken as an example in the embodiment, and the four groups of dismounting pieces are distributed along the matrix;

[0060] In the embodiment, when connecting the mounting frame with the fixing frame 1, the end of the swing claw 103 away from the recess 104 is pressed downward, so that the mounting frame can be inserted below the recess 104, the bottom surface of the mounting frame is contacted with the top surface of the fixing frame 1, the torsion spring is deformed to generate elasticity in the process, the swing claw 103 is released at this time, the recess 104 on the swing claw 103 swings downward under the elastic force of the torsion spring and clamps the edge of the mounting frame, and the fixing of the mounting frame is completed;

[0061] The connecting mode of the fixing frame 1 and the mounting frame in the embodiment is more complex than that in the embodiment 2, but the connecting structure between the mounting frame and the fixing frame 1 is more stable.

[0062] Embodiment 4

[0063] The third structure of the fixing frame 1 and the mounting frame is disclosed in the embodiment;

[0064] The difference between the embodiment 2 and the embodiment 3 is that the dismounting part comprises the connecting frame 102, the swing claw 103 and the air cylinder 105;

[0065] For details, please refer to Figure 8 The connecting frame 102 is arranged on the top of the fixing frame 1, the swing claw 103 is rotatably connected to the connecting frame 102 at the middle part, the bottom surface of one end of the swing claw 103 is provided with the recess 104 capable of clamping the mounting frame, the fixed end of the air cylinder 105 is arranged on the side wall of the fixing frame 1, and the movable end of the air cylinder 105 is connected to the end of the swing claw 103 away from the recess 104;

[0066] The structure of the embodiment is similar to that of the embodiment 3, but in the embodiment, the swing claw 103 is driven to swing by the air cylinder 105 to realize the clamping and releasing of the mounting frame, so that the connection structure between the mounting frame and the fixing frame 1 is stable, and the labor intensity of the worker is not increased, and the scheme is relatively optimal.

[0067] Embodiment 5

[0068] The embodiment provides a kind of off-line calibration tool of weight measuring instrument, on the basis of embodiment 1, the first structure of mounting frame is also disclosed;

[0069] For details, please refer to Figure 4 The mounting frame comprises the frame body 2 and the clamping part 3, the frame body 2 is annular as a whole, and the clamping part 3 is arranged on the frame body 2; The clamping part 3 can fix and clamp the pole piece 400 on the frame body 2.

[0070] For details, please refer to Figure 9 The clamping part 3 comprises a group of elastic clamping parts 3, which are arranged on the inner side wall of the frame body 2 in the third direction Z; The elastic clamping part 3 comprises two clamping strips 301, which have elasticity; The clamping strip 301 can be made of thin metal structure or rubber material; The first ends of the two clamping strips 301 are connected to the inner side wall of the frame body 2; The second ends of the two clamping strips 301 are close to each other in the first direction X to form a clamping part; The second end of the clamping strip 301 can be pulled in the first direction X by external force, and the second end of the clamping strip 301 can be reset after the external force is removed.

[0071] When the pole piece 400 is not clamped, the width of the second ends of the two clamping strips 301 in the first direction X is smaller than the thickness of the pole piece 400; When the pole piece 400 needs to be clamped, the worker manually pulls the second end of one clamping strip 301 in the first direction X to enable the pole piece 400 to enter the clamping part; At this time, the second end of the clamping strip 301 is reset and cooperates with the other clamping strip 301 to clamp and fix the pole piece 400.

[0072] The clamping piece 3 of the embodiment is simple in structure, and simple in clamping and releasing operation of the pole piece 400.

[0073] Embodiment 6

[0074] The embodiment discloses a second structure of the mounting rack;

[0075] The difference from the embodiment 5 is that, in the embodiment, the clamping piece 3 comprises two groups of elastic clamping pieces 3.

[0076] For details, please refer to Figure 10 The two groups of elastic clamping pieces 3 are respectively located on two sides of the rack body 2, and the two groups of elastic clamping pieces 3 are symmetrically distributed with the middle part of the rack body 2 as the center.

[0077] The elastic clamping piece 3 in the embodiment has the same structure as the elastic clamping piece 3 in the embodiment 5, the pole piece 400 is clamped by arranging two groups of elastic clamping pieces 3, and the stability of clamping the pole piece 400 is further improved.

[0078] Embodiment 7

[0079] On the basis of the embodiment 5 and the embodiment 6, the structure of the elastic clamping piece 3 is optimized in the embodiment;

[0080] For details, please refer to Figure 4 , Figure 9 and Figure 10 The width of the clamping strip 301 in the second direction Y is slightly smaller than the width of the rack body 2 in the second direction Y, and generally needs to be greater than half of the width of the rack body 2 in the second direction Y, so that the contact area between the clamping strip 301 and the pole piece 400 can be increased when the pole piece 400 is clamped, and the stability of clamping the pole piece 400 is improved.

[0081] Embodiment 8

[0082] The embodiment discloses a third structure of the mounting rack;

[0083] The difference from the embodiment 5 and the embodiment 6 is that the structure of the clamping piece 3 is different in the embodiment;

[0084] For details, please refer to Figure 11 The clamping piece 3 comprises two groups of movable clamping pieces 3, and the two groups of movable clamping pieces 3 are respectively located on two sides of the rack body 2.

[0085] More specifically, the movable clamping piece 3 comprises a fixing plate 302, a positioning plate 303, a pressing plate 304 and a threaded rod 306, the fixing plate 302 and the positioning plate 303 are spaced apart along the first direction X on the frame body 2, the fixing plate 302 is provided with a threaded hole 305, the pressing plate 304 is located between the fixing plate 302 and the positioning plate 303, a clamping part is formed between the pressing plate 304 and the positioning plate 303, the threaded rod 306 is threadedly connected with the threaded hole 305, and one end of the threaded rod 306 is rotationally connected with the pressing plate 304;

[0086] When the pole piece 400 needs to be clamped, the threaded rod 306 is rotated first so that the pressing plate 304 moves away from the positioning plate 303 in the first direction X, so that the pole piece 400 can be placed on the positioning plate 303, when the bottom surface of the pole piece 400 contacts the positioning plate 303, the threaded rod 306 is rotated so that the pressing plate 304 moves towards the positioning plate 303 in the first direction X, and finally the pole piece 400 is clamped and fixed through cooperation of the pressing plate 304 and the positioning plate 303;

[0087] In the embodiment, two groups of movable clamping pieces 3 are taken as an example, and of course, the movable clamping piece 3 can also be provided with only one group, and at this time, the clamping and releasing of the pole piece 400 can also be completed.

[0088] The embodiments of the utility model are described above in combination with the drawings, the embodiments in the application and the features in the embodiments can be combined with each other in the case of no conflict, the application is not limited to the above-mentioned specific implementation manners, the above-mentioned specific implementation manners are only illustrative, rather than limiting, and the person skilled in the art can make many forms under the inspiration of the application without departing from the scope of the application and the protection scope of the claims, and all the forms are within the protection of the application.

Claims

1. A gauge off-line verification fixture, characterized by, The utility model relates to a kind of fixing frame (1) and mounting frame for weighing apparatus (100), comprising: Fixing frame (1) is arranged at scanning position in weighing apparatus (100); Mounting frame can be clamped pole piece (400) on it, and it is detachably connected with the fixing frame (1); Wherein, when the mounting frame is connected with the fixing frame (1), pole piece (400) is located at scanning position.

2. The off-line verification tool for a weight meter according to claim 1, wherein: The fixing frame (1) is U-shaped as a whole, and the top of the fixing frame (1) is provided with a dismounting part connected with the mounting frame.

3. The off-line verification tool for a weight meter according to claim 2, wherein: The dismounting part includes two positioning grooves (101) arranged on the top of the fixing frame (1), and the two positioning grooves (101) are spaced apart in the third direction (Z) on the fixing frame (1), and each of the two positioning grooves (101) penetrates the inner side wall of the fixing frame (1) in the second direction (Y), and the spacing between the two positioning grooves (101) is adapted to the width of the mounting frame in the third direction (Z).

4. The off-line check tooling for a weight meter according to claim 2, characterized in that: The dismounting part includes a connecting frame (102), a swing claw (103) and a torsional spring, the connecting frame (102) is arranged on the top of the fixing frame (1), the swing claw (103) is rotatably connected in the middle of the connecting frame (102), one end of the swing claw (103) is provided with a recess (104) capable of clamping the mounting frame, one end of the torsional spring is connected with the connecting frame (102), and the other end of the torsional spring is connected with the swing claw (103).

5. The off-line check tooling for a weight meter according to claim 2, wherein: The dismounting part includes a connecting frame (102), a swing claw (103) and a gas cylinder (105), the connecting frame (102) is arranged on the top of the fixing frame (1), the swing claw (103) is rotatably connected in the middle of the connecting frame (102), one end of the swing claw (103) is provided with a recess (104) capable of clamping the mounting frame, and the fixed end of the gas cylinder (105) is arranged on the side wall of the fixing frame (1), and the movable end of the gas cylinder (105) is connected with one end of the swing claw (103) away from the recess (104).

6. The off-line check tooling for a weight meter according to claim 1, wherein: The mounting frame includes a frame body (2) and a clamping part (3), and the clamping part (3) can fix and clamp the pole piece (400) on the frame body (2).

7. The off-line check tooling for a weight meter according to claim 6, characterized in that: The clamping part (3) includes a plurality of elastic clamping parts (3), the elastic clamping parts (3) are arranged on one side of the frame body (2), the elastic clamping parts (3) include two clamping strips (301), the clamping strips (301) have elasticity, the first ends of the two clamping strips (301) are connected with the frame body (2), and the second ends of the two clamping strips (301) are close to each other in the first direction (X) to form a clamping part.

8. The off-line check tooling for a weight meter according to claim 7, characterized in that: The clamping part (3) includes two groups of elastic clamping parts (3), and the two groups of elastic clamping parts (3) are respectively located on the two sides of the frame body (2).

9. The off-line verification tool for a weight meter according to any one of claims 7-8, wherein: The width of the clamping strip (301) in the second direction (Y) is greater than half the width of the frame body (2) in the second direction (Y).

10. The off-line check tooling for a weight meter according to claim 6, wherein: The clamping piece (3) comprises two groups of movable clamping pieces (3), and the two groups of movable clamping pieces (3) are respectively arranged on two sides of the frame body (2). The movable clamping piece (3) comprises a fixing plate (302), a positioning plate (303), a pressing plate (304) and a threaded rod (306). The fixing plate (302) and the positioning plate (303) are spaced apart along a first direction (X) on the frame body (2). The fixing plate (302) is provided with a threaded hole (305). The pressing plate (304) is located between the fixing plate (302) and the positioning plate (303). The threaded rod (306) is threadedly connected with the threaded hole (305). One end of the threaded rod (306) is connected with the pressing plate (304).

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