Electronic tag grabbing device

Abstract

The utility model provides an electronic tag grabbing device. The electronic tag grabbing device comprises a lifting air cylinder, an adapter block fixedly connected with a first piston rod of the lifting air cylinder, a material taking assembly fixed to the adapter block and a material taking air cylinder fixed to the adapter block. A second piston rod of the material taking cylinder is connected with the clutch cylinder; a third piston rod of the clutch cylinder is provided with a magnetic part for adsorbing the electronic tag; the material taking assembly is provided with a limiting mechanism used for limiting the electronic tags. On the premise that the second piston rod extends out, the third piston rod extends out or retracts back, so that the magnetic piece can adsorb an antenna of the electronic tag or the magnetic piece is separated from the antenna of the electronic tag. According to the electronic tag grabbing device, the lifting air cylinder, the material taking air cylinder, the clutch air cylinder and the material taking assembly are matched, so that the electronic tag grabbing device can be suitable for current mainstream electronic tag grabbing of single-row material belt type disc-shaped packaging and double-row or multi-row tray type packaging, the application scene is wider, and the grabbing accuracy is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the tire technology field, in particular to an electronic tag grabbing device. BACKGROUND

[0002] In the production of a conventional tire tread, a vulcanization electronic tag is the only identity information of a tire in a flow process, but along with the continuous promotion of the intelligent manufacturing concept and the continuous improvement of the automation level in the tire industry, an RFID (Radio Frequency Identification) electronic tag for a tire (hereinafter referred to as an RFID electronic tag or an RFID tag) will be widely applied. Before the RFID electronic tag is implanted into the tire, the electronic tag needs to be pre-processed: the RFID electronic tag is placed into two rubber sheets of a special formula, and is pressed and wrapped, then the isolation preservative film attached to the rubber sheet is peeled off, and then cutting, grabbing and tag mounting are performed. SUMMARY

[0003] The utility model aims to provide an electronic tag grabbing device to improve the success rate of the tag in grabbing.

[0004] The application provides an electronic tag grabbing device, which comprises a lifting cylinder, an adapter block fixedly connected with a first piston rod of the lifting cylinder, a material taking assembly fixed on the adapter block, and a material taking cylinder fixed on the adapter block; a second piston rod of the material taking cylinder is connected with a supporting block, and a clutch cylinder is arranged on the supporting block; a third piston rod of the clutch cylinder is provided with a magnetic piece for being inserted into the material taking assembly; wherein,

[0005] The extension directions of the first piston rod, the second piston rod and the third piston rod are parallel;

[0006] A limiting mechanism for limiting the electronic tag is arranged on the material taking assembly;

[0007] When the second piston rod is extended and the third piston rod is extended, the magnetic piece can attract the antenna of the electronic tag; when the second piston rod is extended and the third piston rod is retracted, the magnetic piece is separated from the antenna of the electronic tag.

[0008] In the above technical solution, the cooperation of the lifting cylinder, the material taking cylinder, the clutch cylinder and the material taking assembly makes the electronic tag grabbing device applicable to the electronic tag grabbing of the current mainstream single-column material belt type disc-shaped packaging and double-column or multi-column tray type packaging, the application scenarios are more extensive, and the success rate of grabbing is improved.

[0009] In one specific implementation, the second piston rod has a first stroke and the third piston rod has a second stroke; the first stroke is greater than the second stroke.

[0010] When the second piston rod is retracted, the magnetic member is exposed on the side of the material taking assembly away from the limiting mechanism.

[0011] The magnetic member is detachably fixed to the second piston rod.

[0012] In one specific implementation, the third piston rod is provided with an adsorption block, and the magnetic member is fixed to the adsorption block.

[0013] In one specific implementation, the adsorption block is provided with a groove, and the magnetic member is located in the groove and magnetically adsorbed to the adsorption block.

[0014] In one specific implementation, the groove is open at both ends in the direction perpendicular to the axis of the third piston rod, and at least one end of the magnetic member is located outside the opening of the groove.

[0015] In one specific implementation, the end of the adsorption block away from the third piston rod is provided with a protrusion for pressing against the antenna of the electronic tag.

[0016] In one specific implementation, the material taking assembly is provided with a through hole, and the adsorption block is inserted into the through hole.

[0017] When the second piston rod is extended and the third piston rod is extended, the adsorption block can be partially exposed outside the limiting mechanism.

[0018] When the second piston rod is extended and the third piston rod is retracted, the adsorption block is located in the through hole and spaced apart from the limiting mechanism by a certain distance.

[0019] In one specific implementation, the adsorption block is provided with a guide protrusion, and the side wall of the through hole is provided with a guide groove matched with the guide protrusion.

[0020] In one specific implementation, the limiting mechanism has a first accommodating area and second accommodating areas arranged on both sides of the first accommodating area; the first accommodating area is used for accommodating the RFID chip of the electronic tag; and the two second accommodating areas are used for one-to-one corresponding accommodation of the two antennas of the electronic tag.

[0021] The width of the first accommodating area is greater than the width of the second accommodating area.

[0022] In one specific implementation, the adapter block includes a first adapter block and a second adapter block arranged in a staggered manner; the second adapter block is fixedly connected to the first adapter block, and the second adapter block and the first adapter block are arranged in a direction perpendicular to the axis of the third piston rod;

[0023] The first adapter block is fixedly connected to the first piston rod;

[0024] The material taking cylinder is fixed to the second adapter block, and the material taking assembly is fixed to the second adapter block.

[0025] In one specific implementation, the material taking assembly includes a support seat fixedly connected to the second adapter block and a limiting block fixedly connected to the support seat;

[0026] The support seat and the limiting block are arranged along the axis of the third piston rod, and the limiting block is located on the side of the support seat away from the lifting cylinder.

[0027] The limiting mechanism is arranged on the side of the limiting block away from the support seat. BRIEF DESCRIPTION OF DRAWINGS

[0028] In the drawings, like reference numerals refer to same or similar components throughout the several views. These drawings are not necessarily to scale. It should be understood that these drawings only depict some embodiments in accordance with the disclosure and should not be considered to be limiting of the scope of the disclosure.

[0029] Figure 1 A structural schematic diagram of an electronic tag;

[0030] Figure 2 A structural schematic diagram of a tray carrying an electronic tag;

[0031] Figure 3 A structural schematic diagram of an electronic tag grabbing device provided by an embodiment of the present application;

[0032] Figure 4 A structural schematic diagram of a clutch cylinder provided by an embodiment of the present application;

[0033] Figure 5 A side view of an electronic tag grabbing device provided by an embodiment of the present application;

[0034] Figure 6 A Figure 5 A sectional view of A-A. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings.

[0036] It should be noted that the technical terms or scientific terms used in one or more embodiments of the present specification should be understood as the general meaning understood by a person skilled in the art to which the present disclosure belongs, unless otherwise defined. The terms "first", "second", and the like used in one or more embodiments of the present specification do not represent any order, number, or importance, but are only used to distinguish different components. "Include" or "contain" and the like mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and the like are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right", and the like are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] In order to facilitate the understanding of the electronic tag grabbing device provided by the embodiments of the present application, first of all, its application scene is explained, the electronic tag grabbing device provided by the embodiments of the present application is applied to the tire production process, and is used to grab the label. The current label needs to be taken out from the box or other loading body containing the label through the grabbing device in the automatic production process. However, the current grabbing device has low success rate in placing the RFID label in the deep groove. Therefore, the electronic tag grabbing device provided by the embodiments of the present application is used to improve the success rate of label grabbing. The specific drawings and embodiments are combined below to describe it in detail.

[0038] In order to facilitate the understanding of the electronic tag grabbing device provided by the embodiments of the present application, first of all, its corresponding structure and container of the electronic tag grabbed are explained. The electronic tag includes an electronic tag 100 including an RFID chip 110 and an antenna 120. Among them, the RFID chip 110 is used to realize the main function of the electronic tag 100. And the antenna 120 is used for transceiving signals, so as to write external information into the RFID chip 110 through the antenna 120, or read the information in the RFID chip 110 through the antenna 120. When setting, the antenna 120 is fixedly connected with the RFID chip 110, and the number of the antenna 120 is two, and the two antennas 120 are arranged on the opposite sides of the RFID chip 110, so that the whole electronic tag 100 forms a strip-shaped structure as shown in Figure 2 When the above-mentioned two antennas 120 are used, the information interaction ability of the electronic chip 110 body can be enhanced. In addition, when the two antennas 120 are arranged in the above-mentioned manner, the antenna 120 can also be used as a connecting structure for fixing the electronic tag 100 in the tire, such as embedding the two antennas 120 in the tire, which improves the firmness of the electronic tag 100.

[0039] Referring to Figure 2 As shown in the electronic tag loading, it can be packaged with tray 200, for example, the tray 200 is provided with a groove 210 matched with each electronic tag, and the electronic tag is placed in the corresponding groove 210 one by one. When the electronic tag is carried by the above-mentioned tray 200, the electronic tag arrangement is double or multi-column, and the adjacent RFID tags are close. In addition, the groove 210 for placing the electronic tag is deep.

[0040] Referring to Figure 3 As shown, Figure 3 The structure of the electronic tag grabbing device provided by the embodiment of the application is shown, and the electronic tag grabbing device provided by the embodiment of the application mainly includes three cooperating cylinders and a material taking assembly 50. For the purpose of description, the three cylinders are respectively named as a lifting cylinder 10, a material taking cylinder 20 and a clutch cylinder 30. In the specific assembly, the output end of the lifting cylinder 10 is fixed with the material taking cylinder 20, and the output end of the material taking cylinder 20 is cooperated with the clutch cylinder 30. In addition, the material taking assembly 50 is also fixedly connected with the output end of the lifting cylinder 10, and is lifted synchronously with the material taking cylinder 20 under the driving of the lifting cylinder 10. In use, the lifting cylinder 10 drives the material taking cylinder 20 and the material taking assembly 50 to be lifted synchronously, so as to press the material taking assembly 50 against the carrier containing the electronic tags, and drives the clutch cylinder 30 to be lowered by the material taking cylinder 20, so as to adsorb the electronic tags. The structure of each part of the electronic tag grabbing device will be described in detail below in combination with specific drawings.

[0041] Continuing to refer to Figure 3 As shown, the lifting cylinder 10, the material taking cylinder 20 and the clutch cylinder 30 of the electronic tag grabbing device provided by the embodiment of the application are parallel in the lifting direction when specifically arranged. In order to facilitate the description, the lifting direction of the lifting cylinder 10, the material taking cylinder 20 and the clutch cylinder 30 is referred to as the vertical direction. Figure 3 The placing direction of the electronic tag grabbing device shown in the middle is the reference direction, and the lifting directions of the lifting cylinder 10, the material taking cylinder 20 and the clutch cylinder 30 are all along the vertical direction. In order to facilitate the description, the piston rod of the lifting cylinder 10 is named as the first piston rod, the piston rod of the material taking cylinder 20 is named as the second piston rod, and the piston rod of the clutch cylinder 30 is named as the third piston rod. Then the extension and retraction directions of the first piston rod, the second piston rod and the third piston rod are parallel, and along the vertical direction.

[0042] The first piston rod of the lifting cylinder 10 is fixedly connected with an adapter block 40, which is a support structure for supporting the material taking assembly 50 and the material taking cylinder 20. In the specific connection, the material taking cylinder 20 and the material taking assembly 50 are fixed on the adapter block. When the first piston rod of the lifting cylinder 10 is extended, the material taking cylinder 20 and the material taking assembly 50 are driven to descend. For example, when the first piston rod of the lifting cylinder 10 is extended to a certain position, the material taking assembly 50 can abut against the carrier carrying the electronic tags, so as to position the electronic tags for subsequent suction.

[0043] Referring to Figure 3 and Figure 4 , Figure 4 The structure of the clutch cylinder provided by the embodiment of the application is shown. The second piston rod of the material taking cylinder 20 is connected with a support block 60, which is a support structure of the clutch cylinder 30. In the specific arrangement, the clutch cylinder 30 is fixed on the support block 60, and the third piston rod 31 of the clutch cylinder 30 can be inserted into the material taking assembly 50. When the electronic tags are sucked, the third piston rod 31 of the material taking cylinder 20 is provided with a magnetic piece 70 for adsorbing the antenna of the electronic tag. In use, the magnetic piece 70 on the third piston rod of the material taking cylinder 20 can be inserted into the material taking assembly 50.

[0044] Referring to Figure 5 and Figure 6 , Figure 5 The side view of the electronic tag grabbing device is shown, Figure 6 The cross-sectional view of A-A in Figure 5 In the specific arrangement of the material taking assembly 50, the material taking assembly 50 is provided with a limiting mechanism 54 for limiting the electronic tags. After the electronic tags are adsorbed by the magnetic piece 70, the limiting mechanism 54 can limit the electronic tags.

[0045] When the electronic tags are adsorbed or separated, the second piston rod is extended, and the third piston rod 31 is extended, so that the magnetic piece 70 can adsorb the antenna of the electronic tag; when the second piston rod is extended, and the third piston rod 31 is retracted, the magnetic piece 70 is separated from the antenna of the electronic tag.

[0046] In specific use, first, the lifting cylinder 10 is ventilated to drive the whole structure (the material taking cylinder 20, the clutch cylinder 30, the material taking assembly 50 and other components) to descend until the lower surface of the material taking assembly 50 contacts the upper surface of the electronic tag package (the material belt or the tray 200).

[0047] The clutch cylinder 30 is driven to extend by the air supply, the clutch cylinder 30 is driven to extend by the taking cylinder 20, and the extension distance of the magnetic member 70 should be appropriate for the depth of the groove 210 in which the electronic tag is placed under the position limitation of the taking assembly 50. The matching of the grooves 210 with different depths can be achieved by adjusting the extension distance of the taking cylinder 20 or adjusting the hard limit size of the taking assembly 50.

[0048] After the magnetic member 70 contacts the antenna of the electronic tag, the clutch cylinder 30 is driven to retract by the taking cylinder 20, the magnetic member 70 retracts, the electronic tag is basically attached to the lower surface limit mechanism 54 of the taking assembly 50, the lifting cylinder 10 is driven to ascend by the air supply, and the grabbing action of the electronic tag is completed.

[0049] When the electronic tag needs to be separated from the whole set of mechanisms, the clutch cylinder 30 retracts to drive the magnetic member 70 to retract. Since the position of the electronic tag is limited by the taking assembly 50, the magnetic member 70 is separated from the electronic tag, and the electronic tag loses the magnetic force to separate from the whole set of mechanisms.

[0050] As can be seen from the above description, the electronic tag grabbing device provided by the embodiment of the application can be applied to the electronic tag grabbing of the current mainstream single-row tape type disc-shaped packaging and double-row or multi-row tray 200 type packaging by matching the lifting cylinder 10, the taking cylinder 20, the clutch cylinder 30 and the taking assembly 50, the application scenarios are more extensive, and the grabbing accuracy is improved.

[0051] In a specific implementable scheme, the magnetic member 70 is detachably fixed to the second piston rod. That is, the magnetic member 70 can be replaced as needed. When different magnetic forces are needed for adsorption, the magnetic member 70 on the second piston rod can be replaced to achieve this. For example, the magnetic member 70 can be connected to the second piston rod by clamping or through a connecting piece, which will not be described in detail here.

[0052] When the taking cylinder 20 and the clutch cylinder 30 are specifically set, the extension stroke of the second piston rod is a first stroke, and the extension stroke of the third piston rod 31 is a second stroke. The first stroke is greater than the second stroke. That is, in the scheme disclosed in the application, the extension stroke of the taking cylinder 20 is greater than the extension stroke of the clutch cylinder 30, so that the cooperation of large stroke and small stroke can be achieved, and the cooperation of the taking cylinder 20 and the clutch cylinder 30 can adsorb electronic tags in grooves with different depths, thereby improving the adaptability of the whole device.

[0053] In addition, when the second piston rod is retracted, the magnetic member 70 can be exposed on the side of the material taking assembly 50 away from the limiting mechanism 54, so that the magnetic member 70 can be exposed outside the material taking assembly 50, and the magnetic member 70 can be replaced without disassembling the clutch cylinder 30, which facilitates replacement of the magnetic member 70.

[0054] In one example, the material taking cylinder 20 can be a rodless cylinder, i.e., a cylinder without a piston rod. For example, the material taking cylinder 20 can adopt a magnetic coupling rodless cylinder (magnetic cylinder) and a mechanical rodless cylinder. In the cylinder in this form, the moving part of the material taking cylinder 20 for driving the clutch cylinder 30 to move back and forth is located on the side of the material taking cylinder 20 away from the lifting cylinder 10.

[0055] Referring back to Figure 4 As shown, when the magnetic member 70 cooperates with the third piston rod 31, an adsorption block 80 is arranged on the third piston rod 31, and the magnetic member 70 is fixed on the adsorption block 80. The magnetic member 70 can be fixed on the adsorption block 80 by magnetic force. When the electronic tag is adsorbed, the adsorption block 80 also has magnetism because it is adsorbed to the adsorption block 80 by magnetic force, so that the antenna of the electronic tag can be directly adsorbed by the adsorption block 80. In this way, when the magnetic member 70 is replaced, the magnetic member 70 and the adsorption block 80 are only separated, and the magnetic member 70 can be disassembled and replaced. In addition, the adsorption block 80 can adopt a structure with greater rigidity, which is safer and more reliable. For example, the adsorption block 80 can be made of iron, alloy, or other materials.

[0056] Referring back to Figure 5 and Figure 6 The material taking assembly 50 is provided with a through hole 53 in communication with the limiting mechanism 54, and the adsorption block 80 described above can be inserted into the through hole 53.

[0057] When the electronic tag is adsorbed, i.e., when the second piston rod is extended and the third piston rod 31 is extended, the adsorption block 80 can be partially exposed outside the limiting mechanism 54, so as to reduce the distance from the electronic tag and improve the reliability during adsorption. When the electronic tag needs to be released, i.e., when the second piston rod is extended and the third piston rod 31 is retracted, the adsorption block 80 is located in the through hole 53 and is spaced apart from the limiting mechanism 54 by a certain distance, so that the electronic tag is released from the adsorption of the magnetic force.

[0058] Continuing to refer to Figure 4As shown, in one specific embodiment, the adsorption block 80 is provided with a groove, and the magnetic member 70 is located in the groove and magnetically adsorbed with the adsorption block 80. When this structure is adopted, on one hand, the groove can accommodate the magnetic member 70, and position the magnetic member 70 in the axial direction, so as to avoid the magnetic member 70 from moving when the third piston rod 31 is extended or retracted. On the other hand, the space occupied in the radial direction can also be reduced. At the same time, the magnetic member 70 is fixedly connected with the adsorption block 80 in a magnetic adsorption manner, and does not need to be connected through other connection structures, so that the connection manner is simple and reliable.

[0059] In one embodiment, the groove is open at both ends in the direction perpendicular to the axis of the third piston rod 31, and at least one end of the magnetic member 70 is located outside the opening of the groove. As shown in Figure 4 When the magnetic member 70 is fixed in the groove, the two ends thereof extend outside the groove, so as to provide a stress point when the magnetic member 70 is replaced, and make it more convenient to replace the magnetic member 70.

[0060] Continuing to refer to Figure 4 In one embodiment, the end of the adsorption block 80 away from the piston rod is provided with a protrusion 81 for pressing against the antenna of the electronic tag. That is, a protrusion 81 is arranged on the end face of the adsorption block 80, and the protrusion 81 is in contact with the antenna of the electronic tag when the electronic tag is adsorbed. When this structure is adopted, the weight of the adsorption block 80 can be reduced, and a smaller surface is used to contact the electronic tag, so that the probability of adsorbing the electronic tag nearby is reduced.

[0061] Continuing to refer to Figure 4 and Figure 6 In one embodiment, the adsorption block 80 is provided with a guide protrusion 82, and the side wall of the through hole 53 is provided with a guide groove matched with the guide protrusion 82. Thus, the movement direction of the adsorption block 80 can be guided through the cooperation of the guide protrusion 82 and the guide groove, so that the movement of the adsorption block 80 is more stable, and the reliability of adsorbing the electronic tag is improved.

[0062] When the limiting mechanism 54 is specifically arranged, the limiting mechanism 54 has a first accommodating area and two second accommodating areas arranged on both sides of the first accommodating area; the first accommodating area is used for accommodating the RFID chip of the electronic tag; and the two second accommodating areas are used for one-to-one corresponding accommodation of the two antennas of the electronic tag; and the width of the first accommodating area is greater than the width of the second accommodating area. That is, when the limiting mechanism 54 is arranged, the limiting mechanism 54 can adopt the form of a groove, or the accommodating space limited by the protrusion 81 formed on the surface of the material taking assembly 50, and the electronic tag can be limited therein.

[0063] Continuing to refer to Figure 3 , Figure 5 and Figure 6As shown in the embodiment, the adapter block 40 comprises a first adapter block 41 and a second adapter block 42 arranged in a staggered manner. The second adapter block 42 is fixedly connected to the first adapter block 41, and the second adapter block 42 and the first adapter block 41 are arranged in a direction perpendicular to the axis of the third piston rod 31, so that Figure 1 The arrangement direction of the electronic tag grabbing device shown in the embodiment is the reference direction, and the first adapter block 41 and the second adapter block 42 are arranged in a horizontal direction. When arranged in this way, the first adapter block 41 is fixedly connected to the first piston rod, and the arrangement direction is along the extension direction of the first piston rod, and the second adapter block 42 is arranged side by side with the first adapter block 41, so that the space for mounting the taking assembly 50 and the taking cylinder 20 can be provided by the second adapter block 42. In a specific arrangement, the taking cylinder 20 is fixed to the second adapter block 42, and the taking assembly 50 is fixed to the second adapter block 42. As shown in the embodiment, Figure 1 The taking assembly 50 is fixed to the side of the second adapter block 42 away from the first adapter block 41, and the taking cylinder 20 is fixed to the upper surface of the second adapter block 42.

[0064] With reference to the embodiments shown in Figure 3 , Figure 5 and Figure 6 , in a specific implementation, the taking assembly 50 comprises a support seat 51 fixedly connected to the second adapter block 42 and a limiting block 52 fixedly connected to the support seat 51. The support seat 51 and the limiting block 52 are arranged along the axis of the third piston rod 31, and the limiting block 52 is located on the side of the support seat 51 away from the lifting cylinder 10. The limiting mechanism 54 is arranged on the side of the limiting block 52 away from the support seat 51. The support seat 51 serves as a connecting piece to fix the limiting block 52 to the second adapter block 42, so that the limiting block 52 can be lifted by the lifting cylinder 10. In addition, when the limiting block 52 is arranged, the limiting block 52 is located on the side of the support seat 51 away from the lifting cylinder 10, and forms a protruding structure, so that when the limiting block 52 is lowered by the lifting cylinder 10, other structures (the first adapter block 41, the second adapter block 42, etc.) will not interfere with the carrier carrying the electronic tags. In a specific arrangement, the transverse dimension of the support seat 51 is greater than the transverse dimension of the limiting block 52, so that the support seat 51 can provide stable support.

[0065] One or more embodiments of the present specification are intended to cover all such alternatives, modifications and variations falling within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent replacements, improvements, etc. made in the spirit and principles of one or more embodiments of the present specification shall be included in the protection scope of the present disclosure.

[0066] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electronic tag grabbing device, characterized by, The utility model relates to a kind of electronic tag taking-out device, including: lifting cylinder, adapter block fixedly connected with the first piston rod of the lifting cylinder, material taking-out assembly fixed on the adapter block and material taking-out cylinder fixed on the adapter block;Second piston rod of the material taking-out cylinder is connected with support block, and clutch cylinder is arranged on the support block;Third piston rod of the clutch cylinder is provided with magnetic piece for inserting into the material taking-out assembly;Wherein, The first piston rod, the second piston rod and the third piston rod are parallel in the extension direction. The material taking-out assembly is provided with a limiting mechanism for limiting electronic tags. When the second piston rod is extended, and the third piston rod is extended, the magnetic piece can attract the antenna of the electronic tag; when the second piston rod is extended, and the third piston rod is retracted, the magnetic piece is separated from the antenna of the electronic tag. The extension stroke of the second piston rod is a first stroke, and the extension stroke of the third piston rod is a second stroke; the first stroke is greater than the second stroke.

2. The electronic label grabbing device according to claim 1, characterized in that, When the second piston rod is retracted, the magnetic piece can be exposed on the side of the material taking-out assembly away from the limiting mechanism. The magnetic piece is detachably connected with the second piston rod. The third piston rod is provided with an adsorption block, and the magnetic piece is fixed on the adsorption block.

3. The electronic label grabbing device according to claim 2, characterized in that, The adsorption block is provided with a groove, and the magnetic piece is located in the groove and magnetically attracted to the adsorption block.

4. The electronic label grabbing device according to claim 3, characterized in that, In the direction perpendicular to the axis of the third piston rod, the groove is open at both ends, and at least one end of the magnetic piece is located outside the opening of the groove.

5. The electronic label grabbing device according to claim 4, characterized in that, The end of the adsorption block away from the third piston rod is provided with a protrusion for pressing on the antenna of the electronic tag.

6. The electronic label grabbing device according to claim 3, wherein The material taking-out assembly is provided with a through hole; the adsorption block is inserted into the through hole.

7. The electronic label grabbing device according to claim 3, wherein When the second piston rod is extended, and the third piston rod is extended, the adsorption block can be partially exposed outside the limiting mechanism. When the second piston rod is extended, and the third piston rod is retracted, the adsorption block is located in the through hole and spaced a certain distance from the limiting mechanism. The adsorption block is provided with a guide protrusion, and the sidewall of the through hole is provided with a guide groove matched with the guide protrusion.

8. The electronic label grabbing device according to claim 7, characterized in that, The limiting mechanism has a first accommodating area and a second accommodating area arranged on both sides of the first accommodating area; the first accommodating area is used to accommodate the RFID chip of the electronic tag; the two second accommodating areas are used to correspondingly accommodate the two antennas of the electronic tag.

9. The electronic label grabbing device according to any one of claims 1 to 8, characterized in that, The width of the first accommodating area is greater than the width of the second accommodating area. The adapter block includes a first adapter block and a second adapter block arranged in a staggered manner; the second adapter block is fixedly connected with the first adapter block, and the second adapter block and the first adapter block are arranged in a direction perpendicular to the axis of the third piston rod.

10. The electronic label grabbing device according to claim 9, characterized in that, The first adapter block is fixedly connected with the first piston rod. The material taking-out cylinder is fixed on the second adapter block, and the material taking-out assembly is fixed on the second adapter block. The material taking-out assembly includes a support seat fixedly connected with the second adapter block and a limiting block fixedly connected with the support seat.

11. The electronic label grabbing device according to claim 10, characterized in that, ​ The support seat and the limiting block are arranged along the axis of the third piston rod, and the limiting block is located on the side of the support seat away from the lifting cylinder; The limiting mechanism is arranged on the side of the limiting block away from the support seat.

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