Jig for measuring electrodes of antistatic shielding packaging bag

Abstract

The application relates to a clamp for a static shielding packaging bag measuring electrode, which comprises an upper electrode unit, a lower electrode unit and a capacitive probe unit. The upper electrode unit comprises a driving assembly, an upper electrode connecting rod and an upper discharge electrode, and the upper electrode connecting rod is connected with the upper discharge electrode. The lower electrode unit is arranged below the upper electrode unit, and comprises a lower electrode connecting rod and a lower discharge electrode. The lower discharge electrode is connected with the lower electrode connecting rod and faces the upper discharge electrode. The capacitive probe unit is arranged between the upper electrode unit and the lower electrode unit, and comprises two oppositely arranged capacitive electrodes. The two capacitive electrodes respectively face the upper discharge electrode and the lower discharge electrode. The upper electrode connecting rod is configured to be controlled by the driving assembly to drive the upper discharge electrode to move towards the lower discharge electrode, and the upper discharge electrode and the lower discharge electrode respectively clamp the capacitive electrodes on the capacitive probe unit. The application can integrally integrate a measuring electrode clamp, an electrostatic discharge simulator and a collection and analysis circuit, and has simple structure and convenient operation.

Description

Technical Field

[0001] This invention relates to the field of electrostatic technology, specifically to a clamp for measuring electrodes in an antistatic shielded packaging bag. Background Technology

[0002] Antistatic shielding packaging bags are characterized by being less prone to static electricity generation due to friction. They are made of static dissipative materials, which allow the charges to easily balance and become an equipotential body. For internal or external contact discharges, they can suppress the rapid release of large currents and also have the function of electrostatic discharge shielding, which can attenuate the penetration of electrostatic discharge energy during rapid discharges.

[0003] There are two methods to measure the shielding performance of shielding bags: one is the induced energy method measurement mode corresponding to the ANSI / ESD STM11.31 standard, and the other is the induced voltage peak difference method measurement mode corresponding to the EIA541 standard. The working principle of these two modes is to use a standard capacitor electrode placed inside the anti-static shielding packaging bag under test, and then use an electrostatic discharge simulator to discharge the packaging bag from the outside. The peak difference of the induced voltage or the induced energy on the capacitor electrode is measured, and then the shielding performance of the packaging bag is judged according to the corresponding standard based on the calculated results.

[0004] To ensure the repeatability of each measurement result, a dedicated fixture for the measuring electrodes is required to complete the ESD (electrostatic discharge simulator) discharge and acquisition process. The fixture needs to have two main functions: first, providing the positive and negative electrodes for the discharge simulator and ensuring tight contact with the outer surface of the shielding bag. The discharge electrodes are made of conductive material. Second, the design of the capacitance probe and its lead wires.

[0005] There are currently two typical methods for implementing measuring electrodes in antistatic shielded packaging bags. One is a discrete measuring electrode clamp with a counterweight, and the other is an integrated electrode clamp with a locking device.

[0006] Discrete measuring electrode holders with weights, such as Figure 1 As shown, a product like the PBT531 from PROSTAR (USA) is an example of a discrete measuring electrode fixture with a weight. The measuring electrodes are designed as discrete components. A capacitance probe extends from the center, with the positive and negative discharge electrodes positioned above and below it, respectively. During testing, a shielding bag covers the capacitance probe, and a weight is used to hold the upper electrode in place, using the weight's gravity to compress the discharge electrode, shielding bag, and capacitance probe. The disadvantages of this type of fixture include its large size and numerous parts, resulting in a complex measurement system.

[0007] Integrated electrode clamp with locking device, such as Figure 2As shown, the ETS4431T from the USA is an example of an integrated electrode clamp with a locking device. The measuring electrode is integrated into a single unit, combining the electrostatic discharge simulator and data acquisition circuitry. A capacitance probe extends from the center, with the positive and negative discharge terminals located above and below it, respectively. During testing, a shielding bag covers the capacitance probe, and a lever controls the up-and-down movement of the upper electrode to ensure tight contact between the discharge electrode, shielding bag, and capacitance probe. Disadvantages of this type of clamp include a larger overall instrument size due to the handle design, a thicker capacitance probe, and a larger opening in the shielding bag, resulting in a significant difference in shielding effectiveness compared to when the bag is sealed. Summary of the Invention

[0008] In view of this, the present invention aims to propose a fixture for measuring electrodes of antistatic shielded packaging bags, which integrates a measuring electrode fixture, an electrostatic discharge simulator, and a data acquisition and analysis circuit, and has the advantages of simple structure and convenient operation.

[0009] The clamp for measuring electrodes of antistatic shielded packaging bags proposed in this invention includes: an upper electrode unit, comprising a driving component, an upper electrode connecting rod, and an upper discharge electrode, wherein the upper electrode connecting rod and the upper discharge electrode are connected; a lower electrode unit, disposed below the upper electrode unit, comprising a lower electrode connecting rod and a lower discharge electrode, wherein the lower discharge electrode is connected to the lower electrode connecting rod and faces the upper discharge electrode; and a capacitance probe unit, disposed between the upper electrode unit and the lower electrode unit, comprising two capacitor electrodes disposed opposite to each other, the two capacitor electrodes facing the upper discharge electrode and the lower discharge electrode respectively; wherein the upper electrode connecting rod is configured to be controlled by the driving component to drive the upper discharge electrode to move toward the lower discharge electrode, and the upper discharge electrode and the lower discharge electrode respectively clamp the capacitor electrode on the capacitance probe unit.

[0010] In a preferred embodiment of the present invention, the upper discharge electrode includes: an electrode face plate connected to the end of the upper electrode connecting rod; and an electrode metal plate disposed on the electrode face plate, with the electrode metal plate facing the capacitor electrode of the capacitor probe unit.

[0011] In a preferred embodiment of the present invention, the upper electrode unit further includes a connecting block connected to the end of the upper electrode connecting rod; the upper discharge electrode further includes an electrode back plate disposed above the electrode face plate, the electrode back plate having a back plate through hole in the middle, the electrode face plate having an electrode plate groove on the side facing the capacitor probe unit, the electrode face plate also having a face plate through hole coaxial with and partially overlapping the face plate through hole in the middle, the back plate through hole and the face plate through hole being aligned with each other, the electrode metal plate being accommodated in the electrode plate groove, the end of the upper electrode connecting rod extending sequentially into the back plate through hole and part of the face plate through hole, a portion of the connecting block being accommodated in the back plate through hole and another portion being accommodated in part of the face plate through hole, and a wire being led out from the electrode metal plate and led out from the internal through hole of the upper electrode connecting rod to an external control terminal.

[0012] In a preferred embodiment of the present invention, the volume of the receiving space for accommodating the connecting block is larger than the volume of the connecting block, as the connecting block located in the receiving space is relatively movable relative to the upper discharge electrode.

[0013] In a preferred embodiment of the present invention, the lower electrode unit further includes an elastic element, which is connected to the other end of the lower electrode connecting rod opposite to the lower discharge electrode.

[0014] In a preferred embodiment of the present invention, the driving component includes: a knob; a lever assembly connected to the knob on one side and to the upper electrode connecting rod on the other side; the knob is configured to be rotated in a controlled manner so that the lever assembly drives the upper electrode connecting rod to move.

[0015] In a preferred embodiment of the present invention, the lever assembly includes a first lever, a second lever, and a lever link; one end of the first link is connected to the knob, and the other end is pivotally connected to the lever link; one end of the second link is pivotally connected to the lever link, and the other end is connected to the upper electrode link.

[0016] In a preferred embodiment of the present invention, the knob has a spiral guide groove on the side facing the lever assembly, and one end of the first connecting rod is disposed in the spiral guide groove.

[0017] In a preferred embodiment of the present invention, the capacitance probe unit includes: a capacitance dielectric; a PCB board connected to the capacitance dielectric; two capacitance electrodes respectively disposed on the top and bottom surfaces of the capacitance dielectric, and wires leading out from both capacitance electrodes and connected to the PCB board through the inside of the capacitance dielectric, and the other end of the PCB board connected to an external control terminal.

[0018] In a preferred embodiment of the present invention, the side of the capacitor dielectric has a slot for connection to the PCB board.

[0019] According to at least one aspect of the present invention, the embodiments of the present invention adopt an integrated structure, which integrates not only the electrostatic discharge simulator and the acquisition circuit, but also the analysis circuit, resulting in a simple overall structure.

[0020] According to at least one aspect of the present invention, the lead wire structure of the capacitor probe unit in the embodiment of the present invention is implemented using a PCB circuit board, which has the advantages of being thin, flexible, and having a small lead wire loop area.

[0021] According to at least one aspect of the present invention, the upper electrode unit and the lower electrode unit are designed with a connecting block, and the angle can be adaptively adjusted by the pressure on the electrode metal disk to ensure that the electrode metal disk is parallel to the plane of the capacitor probe.

[0022] According to at least one aspect of the invention, the lower electrode unit employs an elastic element that adapts to the clamping force of the capacitive probe.

[0023] According to at least one aspect of the present invention, the discharge electrode is clamped by a knob and lever assembly, which is convenient to operate. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a discrete measuring electrode clamp with a counterweight.

[0026] Figure 2 A schematic diagram of an integrated electrode clamp with a locking device;

[0027] Figure 3 This is an overall schematic diagram of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0028] Figure 4 This is a partial structural schematic diagram of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0029] Figure 5 This is a partial structural schematic diagram of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention, viewed from another perspective.

[0030] Figure 6This is a schematic diagram of the upper electrode connecting rod of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the electrode back plate of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the electrode face plate of the clamp for measuring electrodes of antistatic shielded packaging bags according to an embodiment of the present invention;

[0033] Figure 9 This is a half-sectional schematic diagram of the electrode face plate of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention.

[0034] Figure 10 This is a schematic diagram of the electrode metal disk of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0035] Figure 11 This is a schematic diagram showing the connection between the upper electrode connecting rod and the connecting block of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention.

[0036] Figure 12 This is a schematic diagram of the electrode face plate and electrode metal plate of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0037] Figure 13 This is a schematic diagram of the lead wires on the electrode metal disk of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention.

[0038] Figure 14 This is a schematic diagram of the upper discharge electrode structure of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0039] Figure 15 This is a schematic diagram of the upper discharge electrode of the clamp of the measuring electrode for the antistatic shielded packaging bag according to an embodiment of the present invention, viewed from another perspective.

[0040] Figure 16 This is a schematic diagram of the accommodating space and connecting block of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0041] Figure 17 This is a schematic diagram of the capacitor dielectric structure of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0042] Figure 18 This is a schematic diagram of the structure of the capacitive electrode of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0043] Figure 19This is a schematic diagram of the structure of the slot for the capacitor dielectric of the clamp of the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0044] Figure 20 This is a schematic diagram of the capacitance probe unit of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0045] Figure 21 This is a schematic diagram of the PCB board structure of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0046] Figure 22 This is a schematic diagram of the internal wiring of the capacitor dielectric of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention.

[0047] Figure 23 This is a schematic diagram of the structure of the first lever of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0048] Figure 24 This is a schematic diagram of the second lever of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0049] Figure 25 This is a schematic diagram of the lever linkage of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0050] Figure 26 This is a schematic diagram of the adjusting bushing of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention;

[0051] Figure 27 This is a schematic diagram showing the connection of the second connecting rod, lever connecting rod, and adjusting bushing of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention.

[0052] Figure 28 This is a schematic diagram showing the connection of the first lever, the second lever, and the lever linkage of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention.

[0053] Figure 29 This is a schematic diagram of the knob structure of the clamp for the measuring electrode of the antistatic shielded packaging bag according to an embodiment of the present invention. Detailed Implementation

[0054] The description of the embodiments in this specification should be taken in conjunction with the accompanying drawings, which should form part of the complete specification. In the drawings, the shape or thickness of the embodiments may be exaggerated and may be indicated in a simplified or convenient manner. Furthermore, parts of the various structures in the drawings will be described separately; it is worth noting that elements not shown in the figures or not described in words are in a form known to those skilled in the art.

[0055] The descriptions of the embodiments herein, including any references to directions and orientations, are for ease of description only and should not be construed as limiting the scope of the invention. The following description of preferred embodiments involves combinations of features, which may exist independently or in combination; the invention is not particularly limited to the preferred embodiments. The scope of the invention is defined by the claims.

[0056] like Figures 3-5 As shown, the clamp for the measuring electrode of the antistatic shielded packaging bag in this embodiment of the invention includes an upper electrode unit 1, a lower electrode unit 2, and a capacitance probe unit 3. The upper electrode unit 1 includes a driving assembly 11, an upper electrode connecting rod 12, and an upper discharge electrode 13, which are connected. The lower electrode unit 2 is located below the upper electrode unit 1 and includes a lower electrode connecting rod 21 and a lower discharge electrode 22, which is connected to the lower electrode connecting rod 21 and faces the upper discharge electrode 13. The capacitance probe unit 3 is located between the upper electrode unit 1 and the lower electrode unit 2 and includes two opposing capacitance electrodes 31. Figure 1 Not shown, please refer to Figure 18 The two capacitor electrodes 31 face the upper discharge electrode 13 and the lower discharge electrode 22, respectively. The upper electrode connecting rod 12 is configured to be controlled by the driving component 11 to move the upper discharge electrode 13 towards the lower discharge electrode 22, with the upper discharge electrode 13 and the lower discharge electrode 22 respectively clamping the capacitor electrode 31 on the capacitor probe unit 3. It should be noted that... Figure 3 The overall structure of the fixture in this embodiment is shown to aid understanding. Figure 4 and Figure 5 Only partial structures related to the upper electrode unit 1, the lower electrode unit 2, and the capacitance probe unit 3 are shown. Figure 4 yes Figure 3 A partial schematic diagram of the medium mm cross-section. Figure 5 yes Figure 3 A partial schematic diagram viewed along the n-direction.

[0057] like Figures 3-5 As shown, this embodiment of the invention can be used to test the antistatic performance of antistatic shielding packaging bags. The antistatic shielding packaging bag (not shown in the figure) is fitted onto the capacitance probe unit 3. The upper discharge electrode 13 and the lower discharge electrode 22 on both sides are clamped toward the two capacitance electrodes 31 on the capacitance probe unit 3. The antistatic shielding packaging bag on the capacitance probe unit 3 is in direct contact with the upper discharge electrode 13 and the lower discharge electrode 22. The antistatic performance of the antistatic shielding packaging bag is determined by detecting the readings of the capacitance electrodes 31.

[0058] like Figure 6As shown, in this embodiment, the upper electrode connecting rod 12 is mainly cylindrical with a large diameter. At each end, the upper electrode connecting rod 12 also has a smaller diameter cylinder (the three cylinders are coaxial). The two smaller cylinders have different lengths. The shorter end serves as the electrode terminal of the upper electrode connecting rod 12, used to connect to the upper discharge electrode 13; the longer end serves as the force-bearing end of the upper electrode connecting rod 12, used to connect to the drive assembly 11. Additionally, the upper electrode connecting rod 12 has a through hole for the lead wires of the upper discharge electrode 13 to be led out, which will be described in detail later.

[0059] like Figures 7-10 As shown, in this embodiment, the upper discharge electrode 13 includes an electrode back disk 131, an electrode face disk 132, and an electrode metal disk 133. In this embodiment, the electrode back disk 131, electrode face disk 132, and electrode metal disk 133 are all circular disks, and the electrode back disk 131 is formed by splicing two semi-circular back disks. The electrode back disk 131 is disposed above the electrode face disk 132. The center of the electrode back disk 131 has a back disk through hole a. The side of the electrode face disk 132 facing the capacitor probe unit 3 has an electrode disk groove c. The center of the electrode face disk 132 also has a face disk through hole b, which is coaxial with and partially overlaps with the face disk through hole b. The back disk through hole a and the face disk through hole b are aligned with each other. The electrode metal disk 133 is accommodated in the electrode disk groove c, and the electrode metal disk 133 faces the capacitor electrode 31 of the capacitor probe unit 3.

[0060] like Figure 11 As shown, in this embodiment, the upper electrode unit 1 further includes a connecting block 121, which is connected to the end of the upper electrode connecting rod 12.

[0061] like Figure 12 and Figure 13 As shown, in this embodiment, a wire lug (conductive material) is installed on the electrode metal disk 133, and a lead wire L is welded on the wire lug. The upper electrode connecting rod 12 has a through hole (not shown) inside, which connects the two ends of the upper electrode connecting rod 12. After the lead wire L is led out from the wire lug, it is guided through the through hole (not shown) inside the upper electrode connecting rod 12 to the other end and then led out and connected to the control terminal (e.g., circuit board or computer).

[0062] like Figure 14-16As shown, in this embodiment, the end of the upper electrode connecting rod 12 extends sequentially into the back plate through hole a and part of the front plate through hole b. A portion of the connecting block 121 is accommodated in the back plate through hole a, and another portion is accommodated in part of the front plate through hole b. The volume of the accommodating space V formed by the back plate through hole a and the front plate through hole b is larger than the volume of the connecting block 121, so that the connecting block 121 located in the accommodating space V is relatively movable relative to the upper discharge electrode 13. For example, the connecting block 121 can be configured as a block with a rhomboid cross-section. When the electrode metal disk 133 of the upper discharge electrode 13 is pressed tightly onto the anti-static shielding packaging bag, since the surface of the capacitor probe unit 3 may be uneven, the electrode metal disk 133 will tilt under pressure to adapt to the surface angle of the capacitor probe unit 3. At this time, the connecting block 121 moves within the accommodating space V, allowing the electrode back plate 131, electrode front plate 132, and electrode metal disk 133 to adapt to the surface angle of the capacitor probe unit 3.

[0063] like Figure 4 and Figure 5 As shown, in this embodiment, the lower electrode connecting rod 21 of the lower electrode unit 2 can have the same structure as the upper electrode connecting rod 12 of the upper electrode unit 1. Similarly, the lower discharge electrode 22 can have the same structure as the upper discharge electrode 13. Therefore, this embodiment will not elaborate further on the lower electrode connecting rod 21 and the lower discharge electrode 22. It should be noted that the upper discharge electrode 13 and the lower discharge electrode 22 are arranged facing each other, respectively aligned with the upper and lower capacitor electrodes 31 on the upper and lower sides of the central capacitor probe unit 3.

[0064] like Figure 4 and Figure 5 As shown, in this embodiment, the lower electrode unit 2 further includes an elastic element 23, which is connected to the other end of the lower electrode connecting rod 21 opposite to the lower discharge electrode 22. When the upper electrode unit 1 presses down on the capacitor probe unit 3, the lower electrode connecting rod 21 and the lower discharge electrode can self-adjust within a certain range up and down based on the elastic element 23.

[0065] like Figures 17-22 As shown, in this embodiment, the capacitance probe unit 3 further includes a capacitance dielectric 32 and a PCB board 33. The side of the capacitance dielectric 32 has slots 321 for connecting to the PCB board 33. The slots 321 have two optional forms: one is a C-shaped groove surrounding three sides of the capacitance dielectric 32, and the other is a wire groove located on two opposite sides of the capacitance dielectric 32. The end of the PCB board 33 is formed into a C-shaped structure adapted to the slots 321 (see reference). Figure 21 The capacitor is inserted into slot 321 and connected to capacitor dielectric 32. Two capacitor electrodes 31 are respectively disposed on the top and bottom surfaces of capacitor dielectric 32, and wires are led out from both capacitor electrodes 31 and pass through the interior of capacitor dielectric 32 (see reference). Figure 22The capacitor is connected to PCB board 33 at one end, and PCB board 33 at the other end is connected to an external control terminal (e.g., a computer). The capacitor dielectric 32 can be an insulating material such as polycarbonate or acrylic, and its shape is not limited.

[0066] like Figure 4 , Figures 23-29 As shown, in this embodiment, the drive assembly 11 includes a knob 111 and a lever assembly 112. The lever assembly 112 includes a first lever 1121, a second lever 1122, and a lever link 1123. One end of the first lever 1121 is connected to the knob 111, and the other end is pivotally connected to the lever link 1123. One end of the second lever 1122 is pivotally connected to the lever link 1123, and the other end is connected to the upper electrode link 12, specifically, it is connected to the force-bearing end of the upper electrode link 12 (the force-bearing end is defined above). The lever assembly 112 may also include an adjusting sleeve 1124, which is disposed between the second lever 1122 and the lever link 1123. Additionally, the lever assembly 112 may also include several shafts (not shown) for pivotal connection. The knob 111 has a spiral guide groove 1111 on the side facing the lever assembly 112. One end of the first lever 1121 is set in the spiral guide groove 1111. The trajectory, depth and length of the spiral guide groove 111 can be designed as needed, so that when the knob 111 is rotated, the end of the first lever 1121 can move in the spiral guide groove 1111, thereby driving the lever assembly 112 to move in conjunction, and then the second lever 1122 drives the upper electrode connecting rod 12 to move up and down, thereby pressing the capacitor probe unit 3.

[0067] In summary, the clamp for the electrostatic discharge measuring electrode in this embodiment of the invention adopts an integrated structure, which integrates not only the electrostatic discharge simulator and the acquisition circuit, but also the analysis circuit, resulting in a simple overall structure. The lead wire structure of the capacitance probe unit is implemented using a PCB circuit board, which has the advantages of thinness, elasticity, and small lead loop area. The upper and lower electrode units adopt a connecting block design, which can adaptively adjust the angle by the pressure on the electrode metal disk to ensure that the electrode metal disk is parallel to the plane of the capacitance probe. The lower electrode unit uses an elastic element to adaptively adjust the clamping force of the capacitance probe, which can be self-adjusted within a certain range. The clamping of the discharge electrode is achieved through a knob and lever assembly, making operation convenient.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A clamp for measuring electrodes in an antistatic shielded packaging bag, characterized in that, The clamp for the measuring electrode in the antistatic shielded packaging bag includes: The upper electrode unit (1) includes a drive assembly (11), an upper electrode connecting rod (12), and an upper discharge electrode (13), wherein the upper electrode connecting rod (12) and the upper discharge electrode (13) are connected. The lower electrode unit (2) is disposed below the upper electrode unit (1). The lower electrode unit (2) includes a lower electrode connecting rod (21) and a lower discharge electrode (22). The lower discharge electrode (22) is connected to the lower electrode connecting rod (21) and faces the upper discharge electrode (13). A capacitor probe unit (3) is disposed between the upper electrode unit (1) and the lower electrode unit (2). The capacitor probe unit (3) includes two capacitor electrodes (31) disposed opposite to each other, with the two capacitor electrodes (31) facing the upper discharge electrode (13) and the lower discharge electrode (22) respectively. The upper electrode link (12) is configured to be controlled by the drive assembly (11) to drive the upper discharge electrode (13) toward the lower discharge electrode (22), and the upper discharge electrode (13) and the lower discharge electrode (22) respectively clamp the capacitor electrode (31) on the capacitor probe unit (3). The upper discharge electrode (13) includes: The electrode faceplate (132) is connected to the end of the upper electrode connecting rod (12); An electrode metal disk (133) is disposed on the electrode surface disk (132), and the electrode metal disk (133) faces the capacitor electrode (31) of the capacitor probe unit (3). The upper electrode unit (1) further includes a connecting block (121), which is connected to the end of the upper electrode connecting rod (12); The upper discharge electrode (13) further includes an electrode back plate (131), which is disposed above the electrode face plate (132). The electrode back plate (131) has a back plate through hole (a) in the middle. The electrode face plate (132) has an electrode plate groove (c) on the side facing the capacitor probe unit (3). The electrode face plate (132) also has a face plate through hole (b) in the middle, which is coaxial with and partially coincides with the electrode face plate (132). The back plate through hole (a) and the face plate through hole (b) are aligned with each other. The electrode metal plate (133) is accommodated in the electrode. In the slot (c), the end of the upper electrode connecting rod (12) extends sequentially into the back plate through hole (a) and part of the front plate through hole (b). The connecting block (121) is partially accommodated in the back plate through hole (a) and partially accommodated in the front plate through hole (b). The back plate through hole (a) and the front plate through hole (b) form a accommodating space (V) for accommodating the connecting block (121), the volume of which is greater than the volume of the connecting block (121), so that the connecting block (121) located in the accommodating space (V) is relatively movable relative to the upper discharge electrode (13).

2. The clamp for measuring electrodes in antistatic shielded packaging bags according to claim 1, characterized in that, A wire is led out from the electrode metal disk (133) and led out through the internal through hole of the upper electrode connecting rod (12) to the external control terminal.

3. The clamp for measuring electrodes in antistatic shielded packaging bags according to claim 1, characterized in that, The lower electrode unit (2) also includes an elastic element (23), which is connected to the other end of the lower electrode connecting rod (21) opposite to the lower discharge electrode (22).

4. The clamp for measuring electrodes in antistatic shielded packaging bags according to any one of claims 1-3, characterized in that, The driving component (11) includes: Knob (111); The lever assembly (112) is connected to the knob (111) on one side and to the upper electrode connecting rod (12) on the other side; The knob (111) is configured to be rotated in a controlled manner by the lever assembly (112) which drives the upper electrode link (12) to move.

5. The clamp for measuring electrodes in antistatic shielded packaging bags according to claim 4, characterized in that, The lever assembly (112) includes a first lever (1121), a second lever (1122), and a lever link (1123). One end of the first lever (1121) is connected to the knob (111), and the other end is pivotally connected to the lever link (1123); One end of the second lever (1122) is pivotally connected to the lever link (1123), and the other end is connected to the upper electrode link (12).

6. The clamp for measuring electrodes in antistatic shielded packaging bags according to claim 5, characterized in that, The knob (111) has a spiral guide groove (1111) on the side facing the lever assembly (112), and one end of the first lever (1121) is disposed in the spiral guide groove (1111).

7. The clamp for measuring electrodes in antistatic shielded packaging bags according to claim 1, characterized in that, The capacitance probe unit (3) further includes: Capacitor dielectric (32); The PCB board (33) is connected to the capacitor dielectric (32); The two capacitor electrodes (31) are respectively disposed on the top and bottom surfaces of the capacitor medium (32), and each of the two capacitor electrodes (31) has a wire leading out and connected to the PCB board (33) through the inside of the capacitor medium (32). The other end of the PCB board (33) is connected to an external control terminal.

8. The clamp for measuring electrodes in antistatic shielded packaging bags according to claim 7, characterized in that, The side of the capacitor dielectric (32) has a slot (321) for connecting the PCB board (33).

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