A method for preparing a tear-resistant label

Abstract

The present invention discloses a method for preparing a tear-resistant label, comprising: forming a thermoplastic inner layer from a thermoplastic material; attaching an electrically connected micro-battery and RFID chip to the center of the thermoplastic inner layer; spirally laying a conductive wire on the outer periphery of the thermoplastic inner layer and extending it to the center of the thermoplastic inner layer to form a closed-loop conductive connection with the RFID chip, and after the conductive wire breaks, the RFID chip records an abnormality; and sheathing a thermoplastic outer layer made of a thermoplastic material over the thermoplastic inner layer, and combining the thermoplastic outer layer and the thermoplastic inner layer into one body through a heat sealing process. In the present invention, the RFID chip cannot be peeled off and used after being affixed to the product. Once peeled off, the conductive wire is destroyed, and the RFID chip records an abnormality, thereby greatly improving the anti-counterfeiting strength. In addition, the thermoplastic outer layer and the thermoplastic inner layer are combined into one body through the heat sealing process, further increasing the difficulty of peeling the RFID chip.

Description

Technical Field

[0001] The present invention relates to the field of counterfeit technology, and in particular to a method for preparing a tear-resistant label. Background Art

[0002] Radio frequency identification (RFID) technology, an important component of the Internet of Things (IoT), boasts the advantages of security, efficiency, and large information storage capacity. Currently, RFID tags can be attached to product surfaces for anti-counterfeiting purposes. However, RFID tags are mostly produced using paper or polyester film as a base material. Once attached to a product, they can be completely peeled off from the attached object through certain physical and chemical means and reused. They cannot achieve the one-time purpose of being destroyed upon tearing, resulting in poor anti-counterfeiting performance.

[0003] Therefore, the existing anti-counterfeiting technology has the following technical problems: the anti-counterfeiting method of anti-tear stickers is not suitable for long-term storage, and the RFID tag can be completely peeled off from the attached object through certain physical and chemical means and reused, and the anti-counterfeiting performance is poor. Summary of the Invention

[0004] To this end, the present invention provides a method for preparing a tear-proof label, which effectively solves the problem that the tear-proof anti-counterfeiting method in the prior art is not suitable for long-term storage, the RFID label can be completely peeled off from the attached object by certain physical and chemical means and reused, and the anti-counterfeiting performance is poor.

[0005] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: a method for preparing a tear-resistant label, comprising the following steps:

[0006] forming a thermoplastic inner layer from a thermoplastic material;

[0007] An electrically connected micro-battery and RFID chip are attached to the center of the thermoplastic inner layer, and a conductive thread is spirally arranged on the outer periphery of the thermoplastic inner layer and extends to the center of the thermoplastic inner layer to be connected to the RFID chip in a closed loop. When the conductive thread breaks, the RFID chip records an abnormality.

[0008] A thermoplastic outer layer made of thermoplastic material is sheathed outside the thermoplastic inner layer, and the thermoplastic outer layer and the thermoplastic inner layer are combined into one through a heat sealing process.

[0009] Furthermore, the conductive filaments are distributed between the inner wall of the outer thermoplastic layer and the outer periphery of the inner thermoplastic layer.

[0010] Furthermore, the method of forming the thermoplastic inner layer and the thermoplastic outer layer into an RFID tear-resistant label includes:

[0011] The thermoplastic inner layer is sheathed on a pipe body mold having spiral grooves on the circumference;

[0012] The end of the conductive thread is fixed to the starting point of the open end of the thermoplastic inner layer, and then the tube body mold is rotated and the conductive thread supply device is synchronously displaced so that the conductive thread is spirally wound on the outer surface of the thermoplastic inner layer;

[0013] Cutting the conductive thread and leaving a connecting section connected to the RFID chip on the center of the thermoplastic inner layer;

[0014] electrically connecting the connecting segment to the RFID chip;

[0015] The thermoplastic outer layer is placed over the thermoplastic inner layer wrapped with the conductive thread, and heat-sealed to form an integrated RFID tear-proof label;

[0016] The tube body mold is then shrunk inward to reduce the diameter, so that the RFID anti-tear label can be demoulded.

[0017] Furthermore, the tube body mold includes:

[0018] The outer mold body is composed of a first indented wall and a second indented wall, wherein the first indented wall and the outer wall of the second indented wall form a complete outer wall of the mold, and an indentation driver is provided at the end of the first indented wall;

[0019] An inner support tube is disposed in the outer mold body, and a movable cavity is provided on the inner support tube, and the movable cavity is used for movably mounting the end portion of the second inwardly contracted wall;

[0020] an inner mold core movably mounted in the inner support tube, wherein the end of the second inwardly contracted wall abuts against the inner mold core;

[0021] Wherein, a translation driver is provided at the end of the inner mold core, and the translation driver drives the inner mold core to translate along the central axis direction of the inner support tube.

[0022] Furthermore, the inner edge of the first inwardly contracted wall is aligned with the side edge of the second inwardly contracted wall;

[0023] The angle between the inner edge of the first inward-contracted wall and its moving direction is greater than 90° and less than 180°, and the angle between the side edge of the second inward-contracted wall and its moving direction is greater than 0° and less than 90°.

[0024] Furthermore, a mounting ring seat is provided on the outer side of the end portion of the first inwardly contracted wall;

[0025] The retraction driver includes a driving cylinder arranged on the mounting ring seat and a connecting block arranged at the output end of the driving cylinder;

[0026] The connecting block is connected to the outer wall end of the first indented wall.

[0027] Furthermore, a stop block is provided at the end of the second inwardly contracted wall, a limiting groove is provided in the movable cavity, the stop block is slidably arranged in the limiting groove, and the end of the stop block is connected to the limiting groove via a spring;

[0028] The inner mold core consists of a contraction support section and an expansion support section. The contraction support section and the expansion support section are connected by a curved surface. The radius of the contraction support section is smaller than the radius of the expansion support section.

[0029] Furthermore, the translation driver includes a translation ring provided at the end of the inner mold core, a driving threaded rod provided on the translation ring, and a driving motor connected to the driving threaded rod;

[0030] The driving threaded rod is connected to the output end of the driving motor, and the translation ring is threadedly connected to the driving threaded rod.

[0031] Furthermore, the conductive thread supply device includes a gear ring connected to the mounting ring seat, a driving gear arranged on the side of the gear ring, and a connecting motor arranged on the driving gear;

[0032] The drive gear meshes with the gear ring.

[0033] Furthermore, a wire feeding roller is provided on the side of the tube body mold, a translation shaft is provided on the wire feeding roller, a hydraulic cylinder is provided on the translation shaft, and the hydraulic cylinder is connected to the output end of the translation shaft;

[0034] A cutting blade is provided on the side of the translation axis.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] In the present invention, the RFID chip is installed between the thermoplastic inner layer and the thermoplastic outer layer, which increases the shelf life. Conductive threads are distributed between the thermoplastic inner layer and the thermoplastic outer layer and are connected in a closed loop with the RFID chip, so that the RFID chip cannot be peeled off and used after it is affixed to the product. Once peeled off, the conductive threads are destroyed, the RFID chip records abnormalities, and cannot be used again, which greatly improves the anti-counterfeiting strength. In addition, the thermoplastic outer layer and the thermoplastic inner layer are combined into one by a heat sealing process, which further increases the difficulty of peeling off the RFID chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0038] Figure 1 A flowchart of a method for preparing a tear-resistant label provided by an embodiment of the present invention;

[0039] Figure 2 Schematic diagram of the structure of the tube body mold in an embodiment of the present invention;

[0040] Figure 3 Schematic diagram of the structure of the RFID anti-tear label in an embodiment of the present invention;

[0041] Figure 4 Schematic diagram of the structure of the tube body mold during the molding process in an embodiment of the present invention;

[0042] Figure 5 Schematic diagram of the structure of the tube body mold in the demoulding process in an embodiment of the present invention;

[0043] Figure 6 Schematic diagram of the connection structure of the second retracted wall in the active cavity in an embodiment of the present invention.

[0044] The numbers in the figure represent the following:

[0045] 1- Thermoplastic inner layer; 2- Thermoplastic outer layer; 3- RFID chip; 4- Conductive wire; 5- Container cover; 6- Spiral wire groove; 7- Tube mold; 8- Conductive wire supply device;

[0046] 71 - outer mold body; 72 - inner support tube; 73 - inner mold core; 74 - retraction drive; 75 - translation drive; 76 - mounting ring seat; 77 - movable cavity; 78 - stop block; 79 - limit slot; 710 - spring;

[0047] 81-gear ring; 82-driving gear; 83-connecting motor; 84-wire feed roller; 85-translation shaft; 86-hydraulic cylinder; 87-cutting blade;

[0048] 711-first indented wall; 712-second indented wall;

[0049] 731-contraction support segment; 732-expansion support segment;

[0050] 741-driving cylinder; 742-connecting block;

[0051] 751-translation ring; 752-driving threaded rod; 753-driving motor. DETAILED DESCRIPTION

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0053] like Figure 1 and Figure 3 As shown, the present invention provides a method for preparing a tear-resistant label, comprising the following steps:

[0054] Thermoplastic material is formed into a thermoplastic inner layer 1;

[0055] An electrically connected micro-battery and RFID chip 3 are attached to the center of the thermoplastic inner layer. A conductive thread 4 is spirally arranged on the outer periphery of the thermoplastic inner layer and extends to the center of the thermoplastic inner layer to form a closed-loop conductive connection with the RFID chip 3. When the conductive thread 4 breaks, the RFID chip 3 records an abnormality.

[0056] A thermoplastic outer layer 2 made of thermoplastic material is sheathed outside the thermoplastic inner layer 1, and the thermoplastic outer layer 2 and the thermoplastic inner layer 1 are combined into one by a heat sealing process.

[0057] Among them, as an example, the thermoplastic inner layer 1 and the thermoplastic outer layer 2 are both designed to be in the shape of a bottle cap, which can be used for anti-counterfeiting of bottle caps (such as wine bottles). The thermoplastic inner layer 1 and the thermoplastic outer layer 2 both have a cover body and a cover periphery corresponding to them. The micro battery and the RFID chip 3 are arranged on the cover body of the thermoplastic inner layer 1, and the conductive wire is arranged on the cover periphery.

[0058] Firstly, it is to facilitate disassembly like a bottle cap, and the conductive wire 4 is directly broken during disassembly; secondly, it is to facilitate the installation of the thermoplastic inner layer 1 on the container cap 5 (such as the above-mentioned wine bottle cap), and the thermoplastic outer layer 2 can be installed correspondingly on the thermoplastic inner layer 1, avoiding the installation inconvenience caused by different shapes.

[0059] In the present invention, the RFID chip 3 is installed between the thermoplastic inner layer 1 and the thermoplastic outer layer 2, and conductive threads 4 are distributed between the thermoplastic inner layer 1 and the thermoplastic outer layer 2 to be connected in a closed loop with the RFID chip 3, so that the RFID chip 3 cannot be peeled off and used after it is affixed to the product. Once peeled off, the conductive threads 4 distributed between the thermoplastic inner layer 1 and the thermoplastic outer layer 2 move in the opposite direction with the thermoplastic inner layer 1 and the thermoplastic outer layer 2, and are pulled and damaged. The RFID chip 3 records an abnormality and cannot be used again, which greatly improves the anti-counterfeiting strength. In addition, the thermoplastic outer layer 2 and the thermoplastic inner layer 1 are combined into one through the heat sealing process, which further increases the difficulty of peeling off the RFID chip 3.

[0060] In order to prevent the conductive threads 4 from being damaged during the removal of the RFID chip 3, the present invention has the following design: the conductive threads 4 are distributed between the inner wall of the thermoplastic outer layer and the outer peripheral side of the thermoplastic inner layer 1. During the process of peeling off the RFID chip 3, the thermoplastic inner layer 1 and the thermoplastic outer layer 2 need to be peeled off. When peeling off the thermoplastic outer layer 2 and the thermoplastic inner layer 1, the conductive threads 4 are pulled and damaged in two directions, causing the RFID chip 3 to record abnormalities.

[0061] In order to prevent the conductive wire 4 from being destroyed when the anti-tear label is peeled off as a whole, the present invention also has another usage example. The thermoplastic inner layer 1 is mounted on the outside of the container cover 5. The conductive wire 4 is distributed on the top of the container cover 5. The conductive wire 4 passes through the thermoplastic inner layer 1 and is connected to the RFID chip 3 in a closed loop. When the thermoplastic inner layer 1 and the container cover 5 are peeled off, the conductive wire 4 on the top of the container cover 5 will be pulled and damaged, causing the RFID chip 3 to record abnormalities.

[0062] In the above embodiment, the conductive thread 4 can pass through the center of the thermoplastic inner layer 1 to be conductively connected to the RFID chip 3 .

[0063] The thermoplastic inner layer 1 and the thermoplastic outer layer 2 are combined into one by a heat sealing process, and the method for forming the thermoplastic inner layer 1 and the thermoplastic outer layer 2 into an RFID anti-tear label includes:

[0064] The thermoplastic inner layer 1 is placed on a pipe body mold 7 having spiral grooves 6 on its circumference;

[0065] The end of the conductive wire 4 is fixed to the starting point of the open end of the thermoplastic inner layer 1, and then the tube mold 7 is rotated and the conductive wire supply device 8 is displaced synchronously so that the conductive wire 4 is spirally wound on the outer surface of the thermoplastic inner layer 1;

[0066] Cut the conductive thread 4 and leave a connecting section connected to the RFID chip 3 on the center of the thermoplastic inner layer 1;

[0067] Electrically connect the connecting segment to the RFID chip 3;

[0068] The thermoplastic outer layer 2 is put on the outer surface of the thermoplastic inner layer 1 wrapped with the conductive thread 4, and heat-sealed to form an integrated RFID tear-proof label;

[0069] The tube body mold 7 is then retracted inward to reduce the diameter, allowing the RFID anti-tear label to be demoulded.

[0070] In the above embodiment, a spiral groove 6 is provided on the tube body mold 7, and the inner wall circumference of the molded thermoplastic inner layer 1 is correspondingly formed into a threaded shape. Therefore, the thermoplastic inner layer 1 is threadedly mounted on the container cover 5. Since the length of the thermoplastic inner layer 1 is greater than the overall thickness of the container cover 5, the RFID anti-tear tag must be removed before removing the container cover 5 (spirally removing the thermoplastic inner layer 1 and the thermoplastic outer layer 2). During the removal process, the conductive wire 4 between the container cover 5 and the thermoplastic inner layer 1 is damaged.

[0071] Among them, the tube body mold 7 is used for forming the thermoplastic inner layer 1, wrapping the conductive wire 4 around the outer periphery of the thermoplastic inner layer 1, and demolding the RFID anti-tear label. The tube body mold 7 of the present invention adopts the following preferred embodiments, such as Figure 2 and Figure 4 As shown, the tube body mold 7 includes an outer mold body 71 , an inner support tube 72 and an inner mold core 73 .

[0072] Among them, such as Figure 4 and Figure 5 As shown, the outer mold body 71 is composed of a first inward-contracted wall 711 and a second inward-contracted wall 712. The outer walls of the first inward-contracted wall 711 and the second inward-contracted wall 712 form a complete outer wall of the mold. A retracting driver 74 is provided at the end of the first inward-contracted wall 711.

[0073] The inner support tube 72 is disposed in the outer mold body 71 and is provided with a movable cavity 77 for movably mounting the end of the second inner shrinkage wall 712;

[0074] The inner mold core 73 is movably installed in the inner support tube 72, and the end of the second inwardly contracted wall 712 abuts against the inner mold core 73; a translation driver 75 is provided at the end of the inner mold core 73, and the translation driver 75 drives the inner mold core 73 to translate along the central axis direction of the inner support tube 72.

[0075] In the above embodiment, the retraction driver 74 can drive the first retracted wall 711 and the second retracted wall 712 to retract, so that a gap appears between the tube mold 7 and the thermoplastic inner layer 1 to facilitate demoulding of the thermoplastic inner layer 1.

[0076] Among them, the outer walls of the first inward-retracted wall 711 and the second inward-retracted wall 712 in the initial state form a complete outer wall of the mold. Since the outer wall needs to be formed into an internal thread of the thermoplastic inner layer 1, the spiral groove 6 is set on the first inward-retracted wall 711 and the second inward-retracted wall 712. In order to make the first inward-retracted wall 711 drive the second inward-retracted wall 712 to retract together when the first inward-retracted wall 711 retracts, the present invention also has the following design: the inner edge of the first inward-retracted wall 711 is matched with the side edge of the second inward-retracted wall 712; the angle between the inner edge of the first inward-retracted wall 711 and its movable direction is greater than 90° and less than 180°, and the angle between the side edge of the second inward-retracted wall 712 and its movable direction is greater than 0° and less than 90°.

[0077] In the above embodiment, when the first inwardly retracted wall 711 is driven to retract, the inner edge of the first inwardly retracted wall 711 pushes the second inwardly retracted wall 712 inwardly, thereby driving the second inwardly retracted wall 712 to retract together.

[0078] In order to drive the first retracted wall 711 to retract, the present invention further makes the following design: Figure 2 and Figure 4 As shown, a mounting ring seat 76 is provided on the outer side of the end of the first retracted wall 711; the retracted driver 74 includes a driving cylinder 741 provided on the mounting ring seat 76 and a connecting block 742 provided at the output end of the driving cylinder 741; the connecting block 742 is connected to the outer wall end of the first retracted wall 711.

[0079] The driving cylinder 741 drives the connecting block 742 to move inward, thereby driving the first inward-retracting wall 711 to retract inward, and the inward retraction of the first inward-retracting wall 711 drives the second inward-retracting wall 712 to retract inward.

[0080] In addition, after the second inwardly contracted wall 712 follows the first inwardly contracted wall 711 and is inwardly contracted, it cannot expand outwardly without external force to continue to form a complete mold outer wall with the first inwardly contracted wall 711. Therefore, in order to enable the second inwardly contracted wall 712 to automatically reset, the present invention further makes the following design, such as Figure 6 As shown, a stop block 78 is provided at the end of the second retracted wall 712 , a limiting groove 79 is provided in the movable cavity 77 , the stop block 78 is slidably set in the limiting groove 79 , and the end of the stop block 78 is connected to the limiting groove 79 through a spring 710 .

[0081] After the second retracted wall 712 retracts, when the first retracted wall 711 is restored, the stop block 78 is restored to the initial position in the limiting groove 79 under the action of the spring 710, thereby driving the second retracted wall 712 to also be restored.

[0082] The elastic action of the spring 710 makes the second retracted wall 712 in an unstable state during the molding process. In order to make the second retracted wall 712 and the first retracted wall 711 form a complete mold with strong sealing properties, the inner mold core 73 in the present invention can support the second retracted wall 712. The inner mold core 73 of the present invention adopts the following preferred embodiment. The inner mold core 73 is composed of a contraction support section 731 and an expansion support section 732. The contraction support section 731 and the expansion support section 732 are connected by a curved surface. The radius of the contraction support section 731 is smaller than the radius of the expansion support section 732.

[0083] When the contraction support section 731 is in the inner support tube 72, the second inwardly contracted wall 712 can be retracted under the push of the first inwardly contracted wall 712, but when the expansion support section 732 is in the inner support tube 72, due to the outward thrust of the expansion support section 732, the second inwardly contracted wall 712 gradually moves outward to form a complete mold outer wall with the first inwardly contracted wall 711.

[0084] The translation driver 75 is used to drive the movement of the inner mold core 73. Figure 4 and Figure 5 As shown, the translation driver 75 includes a translation ring 751 arranged at the end of the inner mold core 73, a driving threaded rod 752 arranged on the translation ring 751, and a driving motor 753 connected to the driving threaded rod 752; the driving threaded rod 752 is connected to the output end of the driving motor 753, and the translation ring 751 is threadedly connected to the driving threaded rod 752.

[0085] In the above embodiment, the driving motor 753 drives the driving threaded rod 752 to rotate. Under the rotation of the driving threaded rod 752, the translation ring 751 translates and drives the inner mold core 73 to move, thereby realizing the adjustment of different sections of the inner mold core 73 in the inner support tube 72.

[0086] The conductive thread supply device 8 is used to wind the conductive thread 4 on the thermoplastic inner layer 1 and cut it. The conductive thread supply device 8 of the present invention adopts the following preferred embodiments, such as Figure 2 As shown, the conductive thread supply device 8 includes a gear ring 81 connected to the mounting ring seat 76, a driving gear 82 arranged on the side of the gear ring 81, and a connecting motor 83 arranged on the driving gear 82; the driving gear 82 is engaged with the gear ring 81.

[0087] In the above embodiment, the connecting motor 83 drives the driving gear 82 to rotate, and the gear ring 81 is driven to rotate under the rotation of the driving gear 82, and the tube body mold 7 is driven to rotate as a whole by installing the ring seat 76. The coordinated action of rotation and translation can realize the winding of the conductive wire 4 on the thermoplastic inner layer 1.

[0088] In order to drive the translation of the conductive wire 4 during the winding process, the present invention also makes the following designs: Figure 2 As shown, a wire feeding roller 84 is provided on the side of the tube body mold 7, a translation shaft 85 is provided on the wire feeding roller 84, a hydraulic cylinder 86 is provided on the translation shaft 85, the hydraulic cylinder 86 is connected to the output end of the translation shaft 85, and a cutting blade 87 is provided on the side of the translation shaft 85.

[0089] The hydraulic cylinder 86 drives the translation shaft 85 to translate, thereby driving the wire feeding roller 84 to move, and cooperating with the rotation of the tube body mold 7 to realize the winding of the conductive wire 4. After the winding of the conductive wire 4 is completed, the conductive wire 4 is cut by the cutting blade 87 on the side close to the wire feeding roller 84, and the remaining part not wound on the thermoplastic inner layer 1 forms a connecting section, which is connected to the RFID chip 3.

[0090] In summary, the steps for integrating the thermoplastic inner layer 1 and the thermoplastic outer layer 2 into one are as follows:

[0091] The driving motor 753 drives the driving threaded rod 752 to rotate. Under the rotation of the driving threaded rod 752, the translation ring 751 translates and drives the inner mold core 73 to move. Figure 2 and Figure 4 As shown, the expansion support section 732 is translated into the inner support tube 72. Under the outward thrust of the expansion support section 732, the second inwardly contracted wall 712 gradually moves outward to form a complete outer wall of the mold together with the first inwardly contracted wall 711.

[0092] Put the thermoplastic inner layer 1 on the pipe body mold 7;

[0093] The end of the conductive wire 4 is fixed to the starting point of the open end of the thermoplastic inner layer 1, and the motor 83 is connected to drive the driving gear 82 to rotate. Under the rotation of the driving gear 82, the gear ring 81 is rotated, and the tube mold 7 is driven to rotate as a whole through the mounting ring seat 76. The hydraulic cylinder 86 is driven to drive the translation shaft 85 to translate, thereby driving the wire feed roller 84 to move, and the conductive wire 4 is wound in coordination with the rotation of the tube mold 7. After the conductive wire 4 is wound, the conductive wire 4 is cut by the cutting blade 87 on the side close to the wire feed roller 84. The remaining part not wound on the thermoplastic inner layer 1 forms a connecting segment, and the connecting segment is connected to the RFID chip 3.

[0094] The thermoplastic outer layer 2 is put on the outer surface of the thermoplastic inner layer 1 wrapped with the conductive thread 4, and heat-sealed to form an integrated RFID tear-proof label;

[0095] The driving motor 753 drives the driving threaded rod 752 to rotate. Under the rotation of the driving threaded rod 752, the translation ring 751 translates and drives the inner mold core 73 to move, so that the shrinking support section 731 translates into the inner support tube 72. When the shrinking support section 731 is in the inner support tube 72, the second shrinking wall 712 can be retracted under the push of the first shrinking wall 712.

[0096] like Figure 5 As shown, the rear driving cylinder 741 drives the connecting block 742 to move inward, thereby driving the first retracted wall 711 to retract inward. During the process of the first retracted wall 711 being driven inward, the inner edge of the first retracted wall 711 pushes the second retracted wall 712 inward, thereby driving the second retracted wall 712 to retract inward together, and the tube mold 7 retracts inward, so that the RFID anti-tear label is demoulded;

[0097] After demoulding, the cylinder 741 is driven to reset, the first retracted wall 711 is reset, and the stop block 78 is reset to the initial position in the limiting groove 79 under the action of the spring 710, thereby driving the second retracted wall 712 to reset as well.

[0098] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A method for preparing a tear-resistant label, characterized in that: The steps include: The thermoplastic material is made into a thermoplastic inner layer having a cover body portion and a cover periphery portion, which can be sleeved on the outer layer of the container cover and has a length greater than the overall thickness of the container cover; An electrically connected micro-battery and RFID chip are attached to the center of the cover, and a conductive wire is spirally arranged around the cover and extends to the center of the cover to be connected to the RFID chip in a closed loop. When the conductive wire breaks, the RFID chip records an abnormality. A thermoplastic outer layer made of thermoplastic material and having a cover body portion and a cover periphery portion is sheathed over the thermoplastic inner layer, and the thermoplastic outer layer and the thermoplastic inner layer are combined into one by a heat sealing process; The method for forming the thermoplastic inner layer (1) and the thermoplastic outer layer (2) into an RFID tear-resistant label comprises: The thermoplastic inner layer (1) is mounted on a tube body mold (7) having a spiral groove (6) on the circumference; The end of the conductive wire (4) is fixed to the starting point of the open end of the thermoplastic inner layer (1), and then the tube mold (7) is rotated and the conductive wire supply device (8) is synchronously displaced so that the conductive wire (4) is spirally wound on the outer surface of the thermoplastic inner layer (1); Cutting the conductive thread (4) and leaving a connection section connected to the RFID chip (3) on the cover portion of the thermoplastic inner layer (1); electrically connecting the connecting section to the RFID chip (3); The thermoplastic outer layer (2) is placed over the thermoplastic inner layer (1) wrapped with the conductive thread (4), and heat-sealed to form an integrated RFID tear-proof label; The tube body mold (7) shrinks inwards to reduce the diameter, so that the RFID anti-tear label is demoulded; The tube body mold (7) comprises: An outer mold body (71) is composed of a first inward-retracted wall (711) and a second inward-retracted wall (712), wherein the outer walls of the first inward-retracted wall (711) and the second inward-retracted wall (712) form a complete outer wall of the mold, and an inward-retracting driver (74) is provided at the end of the first inward-retracted wall (711); An inner support tube (72) is arranged in the outer mold body (71); a movable cavity (77) is provided on the inner support tube (72); the movable cavity (77) is used for movably mounting the end of the second inwardly contracted wall (712); An inner mold core (73) is movably mounted in the inner support tube (72), and an end portion of the second inwardly contracted wall (712) abuts against the inner mold core (73); A translation driver (75) is provided at the end of the inner mold core (73), and the translation driver (75) drives the inner mold core (73) to translate along the inner center axis direction of the inner support tube (72).

2. The method for preparing a tear-resistant label according to claim 1, characterized in that: Conductive threads (4) are distributed on the inner surface of the cover portion of the thermoplastic outer layer (2), and the conductive threads (4) are connected to the RFID chip (3) in a closed loop; A conductive thread (4) is distributed on the top of the container cover (5), and the conductive thread (4) is connected to the RFID chip (3) in a closed loop; The thermoplastic inner layer (1) is in the shape of a bottle cap.

3. The method for preparing a tear-resistant label according to claim 1, wherein: The inner edge of the first inwardly contracted wall (711) fits in with the side edge of the second inwardly contracted wall (712); The angle between the inner edge of the first inwardly contracted wall (711) and its moving direction is greater than 90° and less than 180°, and the angle between the side of the second inwardly contracted wall (712) and its moving direction is greater than 0° and less than 90°.

4. The method for preparing a tear-resistant label according to claim 3, wherein: A mounting ring seat (76) is provided on the outer side of the end portion of the first inwardly contracted wall (711); The retraction driver (74) comprises a driving cylinder (741) arranged on the mounting ring seat (76) and a connecting block (742) arranged at the output end of the driving cylinder (741); The connecting block (742) is connected to the outer wall end of the first indented wall (711).

5. The method for preparing a tear-resistant label according to claim 3, wherein: A stop block (78) is provided at the end of the second inwardly contracted wall (712), a limiting groove (79) is provided in the movable cavity (77), the stop block (78) is slidably disposed in the limiting groove (79), and the end of the stop block (78) is connected to the limiting groove (79) via a spring (710); The inner mold core (73) is composed of a contraction support section (731) and an expansion support section (732); the contraction support section (731) and the expansion support section (732) are connected via a curved surface; the radius of the contraction support section (731) is smaller than the radius of the expansion support section (732).

6. The method for preparing a tear-resistant label according to claim 5, characterized in that: The translation driver (75) comprises a translation ring (751) arranged at the end of the inner mold core (73), a driving threaded rod (752) arranged on the translation ring (751), and a driving motor (753) connected to the driving threaded rod (752); The driving threaded rod (752) is connected to the output end of the driving motor (753), and the translation ring (751) is threadedly connected to the driving threaded rod (752).

7. The method for preparing a tear-resistant label according to claim 4, characterized in that: The conductive thread supply device (8) comprises a gear ring (81) connected to the mounting ring seat (76), a driving gear (82) arranged on the side of the gear ring (81), and a connecting motor (83) arranged on the driving gear (82); The driving gear (82) is meshed with the gear ring (81).

8. The method for preparing a tear-resistant label according to claim 7, characterized in that: A wire feeding roller (84) is provided on the side of the tube body mold (7), a translation shaft (85) is provided on the wire feeding roller (84), a hydraulic cylinder (86) is provided on the translation shaft (85), and the hydraulic cylinder (86) is connected to the output end of the translation shaft (85); A cutting blade (87) is provided on the side of the translation shaft (85).

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