Anti-theft stamping device

Abstract

The present invention discloses an anti-theft stamping device, comprising a seal body, a top cover, a bracket, a swing assembly, a telescopic device, a flip ink pad, a transverse axis, and a main control unit. The bottom of the top cover is connected to the seal body to form a receiving cavity, and the seal body is provided with a channel connected to the receiving cavity; the top of the bracket extends from the bottom of the seal body into the seal body, the bracket is slidably connected to the seal body, and the bottom of the bracket is provided with an opening; the swing assembly is movably connected to the top of the bracket and cooperates with the channel; the telescopic device is provided at the top of the bracket and arranged in parallel with the swing assembly, and is used to drive the swing assembly to swing; the flip ink pad is rotatably connected to the bracket; the transverse axis is provided on the seal body and passes through the flip ink pad to drive the flip ink pad to rotate; the main control unit is provided in the receiving cavity and is electrically connected to the telescopic device to control the telescopic device to extend and retract. The present invention prevents the seal from being stamped when the seal is locked, thereby preventing the seal from being stolen or overwritten.

Description

Technical Field

[0001] The present invention relates to the technical field of seals, and in particular to an anti-theft stamping device. Background Art

[0002] A seal, also known as a stamp, is a stationery used to print on documents to indicate authentication or signature.

[0003] Currently, seals exist for a variety of different purposes. However, when used as official seals, they are granted a special status by law. They serve as important credentials and tools for companies to exercise their authority in their operations and management. Proper storage and use of official seals can promote the healthy development of a company. However, improper storage and use can also lead to serious legal consequences for the company and cause immeasurable losses. For example, when an official seal is used by unauthorized personnel, it can be stolen or used without authorization.

[0004] In view of this, the existing technology still needs to be improved and enhanced. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide an anti-theft stamping device, which aims to solve the technical problem of stamps being stolen or stolen.

[0006] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0007] An anti-theft stamping device includes a seal body and a top cover, wherein the bottom of the top cover is connected to the seal body to form a receiving cavity, and a channel is provided in the seal body that communicates with the receiving cavity. The anti-theft stamping device also includes:

[0008] A bracket, the top of which extends from the bottom of the seal body into the inside of the seal body, the bracket is slidably connected to the seal body, and the bottom of the bracket is provided with an opening;

[0009] a swing assembly movably connected to the top of the bracket and cooperating with the hole;

[0010] a telescopic device, disposed on the top of the bracket and arranged in parallel with the swing assembly, the telescopic device being used to push the swing assembly to swing;

[0011] A flip ink pad, wherein the flip ink pad is rotatably connected to the bracket;

[0012] A horizontal axis, which is provided on the seal body and passes through the flip ink pad to drive the flip ink pad to rotate;

[0013] a main control unit, the main control unit being disposed in the accommodating cavity and electrically connected to the telescopic device to control the telescopic device to extend and retract;

[0014] When the telescopic device is in an extended state, the swing assembly deviates from the channel and can support the top wall of the seal body, and the print head of the flip ink pad is located on the inner side of the opening; when the telescopic device is in a retracted state, the swing assembly is located on the moving path of the channel, and the print head of the flip ink pad flips to the outside of the opening.

[0015] As a further improved technical solution, in the above-mentioned anti-theft stamping device, a second protrusion is further provided on the top of the bracket, and a groove is provided on the side of the second protrusion facing away from the telescopic device, and the swing component is arranged in the groove.

[0016] As a further improved technical solution, in the above anti-theft stamping device, the swing assembly includes:

[0017] sway bar;

[0018] a first protrusion, the first protrusion being provided on one side of the rocking arm;

[0019] a third spring, one end of the third spring being sleeved on the first protrusion and the other end being connected to the bottom surface of the groove;

[0020] A rotating shaft is passed through the middle of the rocking arm, and ends of the rotating shaft are connected to both sides of the groove.

[0021] As a further improved technical solution, in the above anti-theft stamping device, the telescopic device includes:

[0022] electromagnet;

[0023] a first push rod, the first push rod being arranged on one side of the electromagnet;

[0024] a second spring, the second spring being sleeved on the first push rod;

[0025] A pressure plate is provided at an end of the second spring away from the electromagnet, and a through hole for the first push rod to pass through is provided in the middle of the pressure plate.

[0026] As a further improved technical solution, in the above-mentioned anti-theft stamping device, a second push rod is provided at one end of the bracket close to the top cover, and an induction magnet is provided at the top of the second push rod.

[0027] As a further improved technical solution, in the above anti-theft stamping device, the anti-theft stamping device further includes:

[0028] A first spring is provided between the seal body and the bracket.

[0029] As a further improved technical solution, in the above-mentioned anti-theft stamping device, there are at least two first springs, one end of the first spring abuts against the bracket, and the other end abuts against the seal body.

[0030] As a further improved technical solution, in the above anti-theft stamping device, the main control unit includes:

[0031] A main control circuit board is provided with an electrically connected communication module and a controller.

[0032] As a further improved technical solution, in the above-mentioned anti-theft stamping device, the flip ink pad includes:

[0033] A print head flip frame, one end of which is connected to the print head.

[0034] As a further improved technical solution, in the above anti-theft stamping device, the anti-theft stamping device further includes:

[0035] The ink cartridge is arranged in the bracket and is located at one end of the bracket close to the top cover.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] The present invention provides an anti-theft stamping device. In a locked state, a main control unit controls the telescopic device to extend. When the bracket and the seal body make relative motion, that is, the bottom end of the bracket is located on the surface of an object, and the user presses the top cover downward. Since the top cover and the seal body are connected together, the seal body will also move downward with the top cover, and the bracket will slide upward inside the seal body. The swing component movably connected to the top of the bracket deviates from the channel position due to the push of the telescopic device and is held on the top wall of the seal body, so that the relative motion between the bracket and the seal body is interrupted, and the swing component cannot be inserted into the accommodating cavity to complete the compression action between the seal body and the bracket, which leads to incomplete flipping of the flip ink pad driven by the horizontal axis, and the seal surface on the flip ink pad cannot face the object for stamping, thereby avoiding unauthorized stamping and theft. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the assembly of the anti-theft stamping device provided by the present invention;

[0039] Figure 2 A schematic structural diagram of the anti-theft stamping device provided by the present invention;

[0040] Figure 3 It is a structural diagram of the anti-theft stamping device after removing the seal body and the lower cover;

[0041] Figure 4 for Figure 1 A schematic diagram of the structure of the transfer circuit board;

[0042] Figure 5 for Figure 1 A schematic structural diagram of the telescopic device in FIG.

[0043] Figure 6 for Figure 1 Schematic diagram of the structure of the swing component;

[0044] Figure 7 for Figure 1 Schematic diagram of the structure of the bracket;

[0045] Figure 8 for Figure 1 Schematic diagram of the structure of the flip ink pad;

[0046] Figure 9 Schematic diagram of the structure of the anti-theft stamping device in the ink return state;

[0047] Figure 10 Schematic diagram of the structure of the anti-theft stamping device in the stamping state;

[0048] Figure 11 It is a structural diagram of the anti-theft stamping device in the locked state;

[0049] Figure 12 This is a diagram showing the connection between the controller and its components.

[0050] The numbers in the figure are as follows: 1. lens; 2. display screen; 3. fingerprint recognition module; 4. top cover; 5. adapter circuit board; 501. signal indicator light; 6. power supply; 7. main control circuit board; 8. seal body; 9. decorative block; 10. first spring; 11. electromagnet; 1101. second spring; 1102. first push rod; 1103. pressure plate; 12. swing assembly; 1201. swing rod; 1202. first protrusion Part; 1203, third spring; 1204, rotating shaft; 13, induction magnet; 14, bracket; 1401, second push rod; 1402, second protrusion; 1403, first through slot; 1404, third protrusion; 1405, limit block; 1406, second through slot; 15, ink cartridge; 16, flip ink pad; 1601, print head; 1602, print head flip frame; 1603, slide; 17, horizontal axis; 18, lower cover. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0052] It should be noted that when a component is referred to as being “fixed to” or “disposed on” another component, it may be directly on the other component or indirectly on the other component. When a component is referred to as being “connected to” another component, it may be directly connected to the other component or indirectly connected to the other component.

[0053] It should also be noted that the same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0055] Example 1

[0056] like Figures 1 to 8 As shown, Figure 1 This is a schematic diagram of the assembly of the anti-theft stamping device provided by the present invention; Figure 2 A schematic structural diagram of the anti-theft stamping device provided by the present invention; Figure 3 It is a structural diagram of the anti-theft stamping device after removing the seal body and the lower cover; Figure 4 for Figure 1 A schematic diagram of the structure of the transfer circuit board; Figure 5 for Figure 1 A schematic structural diagram of the telescopic device in FIG. Figure 6 for Figure 1 Schematic diagram of the structure of the swing component; Figure 7 for Figure 1 Schematic diagram of the structure of the bracket; Figure 8 for Figure 1 Schematic diagram of the structure of the flip ink pad. Specifically, Figure 1As shown, this embodiment provides an anti-theft stamping device, including a seal body 8, a top cover 4, a fingerprint recognition module 3, a bracket 14, a swing assembly 12, a telescopic device, a first spring 10, a horizontal axis 17, a flip ink pad 16 and a main control unit. One end of the top cover 4 is connected to the seal body 8 to form a accommodating cavity. The seal body 8 is provided with a channel (not marked in the figure) connected to the accommodating cavity. The accommodating cavity is provided with a main control unit, a switching circuit board 5 and a power supply 6. Specifically, the power supply 6 is a lithium battery. Of course, it can also be connected to an external power supply for power supply, which is not limited in this embodiment. Among them, a signal indicator light 501 is provided on the switching circuit board 5, and the signal indicator light 501 is illuminated when the anti-theft stamping device is in the unlocked state.

[0057] A display screen mounting slot and a fingerprint recognition module mounting slot are provided at the top of the top cover 4. A display screen 2 is installed in the display screen mounting slot, and a fingerprint recognition module 3 is installed in the fingerprint recognition module mounting slot. A protective lens 1 is provided on the top of the display screen 2 and the fingerprint recognition module 3 to prevent the display screen 2 and the fingerprint recognition module 3 from being directly contacted and damaged by external forces. The display screen 2 can display the ink return status, stamping status and locking status of the anti-theft stamping device, as well as information such as the remaining power of the power supply 6.

[0058] The bracket 14 is slidably connected to the inside of the seal body 8. The top of the bracket 14 is provided with a second protrusion 1402 and a telescopic device. The second protrusion 1402 is provided with a groove on the side away from the telescopic device. The swing assembly 12 is arranged in the groove. Figure 6 As shown, the rocking assembly 12 includes a rocking arm 1201, a first protrusion 1202, a third spring 1203 and a rotating shaft 1204. When the anti-theft stamping device is in the unlocked state, the channel is located on the upward movement path of the rocking arm 1201, so that the rocking arm 1201 can pass through the channel and enter the accommodating cavity. The first protrusion 1202 is provided on one side of the rocking arm 1201, one end of the third spring 1203 is sleeved on the first protrusion 1202, and the other end is connected to the bottom surface of the groove. The rotating shaft 1204 runs through the middle of the rocking arm 1201, and the ends of the rotating shaft 1204 are connected to both sides of the groove, so that the rocking arm 1201 rotates along the rotating shaft 1204.

[0059] Further, such as Figure 7 As shown, a second top rod 1401 is further provided on the top of the bracket 14 , and an induction magnet 13 is provided on the top of the second top rod 1401 .

[0060] Specifically, the main control unit is disposed within the accommodating cavity and includes a main control circuit board 7. As the bracket 14 moves up and down, when the induction magnet 13 approaches the main control circuit board 7, the induction magnet 13 can be sensed by the main control circuit board 7 under the action of Hall effect, thereby realizing a counting function to measure the number of stamps performed by the anti-theft stamping device per unit time and display the number on the display screen 2.

[0061] Please continue to refer to Figure 7 A limit block 1405 is also provided on the top of the bracket 14. The limit block 1405 is set at a position facing the opening of the groove, so that when the telescopic device pushes the rocking arm 1201 to rotate, one end of the rocking arm 1201 hits the limit block 1405 to be limited.

[0062] Specifically, the side of the bracket 14 is provided with a first through-slot 1403. On opposite sides of the first through-slot 1403, the bracket 14 is further provided with a second through-slot 1406. The middle portion of the second through-slot 1406 is semicircular. Near the semicircular region of the second through-slot 1406, the inner wall of the bracket 14 is further provided with a third protrusion 1404. The third protrusion 1404 is a cylindrical structure.

[0063] The anti-theft stamping device is also provided with a horizontal axis 17, which passes through the second through slot 1406 along the width direction of the bracket 14, and also passes through the flip ink pad 16 in the bracket 14 on the way. The two ends of the horizontal axis 17 are fixedly connected to the seal body 8. Furthermore, a decorative block 9 is installed at the connection position between the horizontal axis 17 and the seal body 8 for decoration and embellishment, thereby enhancing the appearance of the seal body 8.

[0064] Specifically, such as Figure 8 As shown, the flip ink pad 16 includes a print head 1601 for stamping and a print head flip frame 1602. The stamping surface of the print head 1601 is affixed with an engraved seal surface. One end of the print head flip frame 1602 is connected to the print head 1601. The two opposite sides of the print head flip frame 1602 are also provided with a slide groove 1603. One end of the third protrusion 1404 is clamped in the inside so that the third protrusion 1404 cooperates with the slide groove 1603. The print head flip frame 1602 can slide in the bracket 14 and can flip around the third protrusion 1404 as the center.

[0065] like Figure 5As shown, the telescopic device includes an electromagnet 11, a first push rod 1102, a second spring 1101 and a pressure plate 1103. The first push rod 1102 is arranged on one side of the electromagnet 11; the second spring 1101 is sleeved on the first push rod 1102; the pressure plate 1103 is arranged at the end of the second spring 1101 away from the electromagnet 11, and a through hole for the first push rod 1102 to pass through is provided in the middle of the pressure plate 1103, so that the first push rod 1102 passes through the side wall of the second protrusion 1402 to push the rocking arm 1201, so that the rocking arm 1201 rotates in the groove.

[0066] like Figure 12 As shown, Figure 12 Figure 1 is a diagram showing the connection relationship between the controller and various components. The main control circuit board 7 is provided with a communication module and a controller. The controller is electrically connected to the communication module, the display screen 2, the fingerprint recognition module 3, the electromagnet 11, the signal indicator light 501, and the power supply 6. It should be noted that the controller can be any controller in the prior art that meets practical needs and is not limited to a specific model. Therefore, this is not a limitation in this embodiment.

[0067] Specifically, the first spring 10 comprises at least two springs and is disposed between the seal body 8 and the bracket 14. One end of the first spring 10 abuts the bracket 14, and the other end abuts the seal body 8. This allows the user to press downward on the top cover 4, as the top cover 4 and the seal body 8 are fixedly connected, so that the seal body 8 and the bracket 14 move relative to each other, that is, the bracket 14 slides upward within the seal body 8. When the transverse axis 17 passes through the semicircular area of ​​the second through-slot 1406, the transverse axis 17 drives the print head flip frame 1602 to flip around the third protrusion 1404. Multiple first springs 10 are disposed between the seal body 8 and the bracket 14, so that the ink return and stamping of the flip ink pad 16 are more evenly applied, thereby achieving a better stamping effect.

[0068] Furthermore, the anti-theft stamping device also includes an ink cartridge 15, which is arranged in the bracket 14 and located at one end of the bracket 14 close to the top cover 4. The ink cartridge 15 contains a sponge filled with printing ink for returning ink to the print head 1601.

[0069] Specifically, the anti-theft stamping device provided by the present invention has the following working principles:

[0070] The present invention includes two verification methods for determining whether a user is an authorized person. One is that the user sends verification information to a server using a mobile phone. Of course, the server can also be a cloud server. Narrowband Internet of Things platforms are provided by companies such as China Mobile, China Telecom, and China Unicom. Narrowband Internet of Things is a prior art. The server converts the received verification information into a communication signal and sends the communication signal to the communication module. The controller interprets the information received by the communication module to control the power on and off of the electromagnet 11. The other method is fingerprint unlocking. The user presses the fingerprint on the fingerprint recognition module with a finger. The controller analyzes the fingerprint information and determines whether the user is an authorized person. Therefore, the user can freely choose the unlocking method according to their convenience.

[0071] like Figures 9 to 11 As shown, Figure 9 Schematic diagram of the structure of the anti-theft stamping device in the ink return state; Figure 10 Schematic diagram of the structure of the anti-theft stamping device in the stamping state; Figure 11 The figure is a schematic diagram of the structure of the anti-theft stamping device in the locked state. That is, the anti-theft stamping device includes three states: ink return state, stamping state and locked state.

[0072] In the ink return state, if Figure 9 As shown, the first spring 10 stretches naturally, and the bracket 14 extends naturally out of the seal body 8 under the action of gravity. The print head 1601 at one end of the print head flip frame 1602 faces upward and contacts the ink cartridge 15 to complete ink dipping.

[0073] In the stamped state, Figure 10 As shown, when an external command is received, the controller controls the first push rod 1102 at one end of the electromagnet 11 to retract toward the inside of the electromagnet 11, and the rocking arm 1201 is in a vertical state under the elastic force of the third spring 1203, so that the rocking arm 1201 is aligned with the position of the channel. A downward pressing force is applied to the top cover 4 by hand, and the first spring 10 is compressed, so that one end of the rocking arm 1201 passes through the channel and is inserted into the accommodating cavity. Under the mutual cooperation of the seal body 8 and the bracket 14, the horizontal axis 17 moves downward in the second through groove 1406. After passing through the semicircular area of ​​the second through groove 1406, it drives the print head flip frame 1602 on the horizontal axis 17 to flip, and the seal surface on the print head 1601 contacts the object to complete the stamping action.

[0074] In the locked state, Figure 11As shown, when the external command disappears, the controller will cut off the power supply to the electromagnet 11, and the bracket 14 will extend out of the seal body 8 under the action of gravity. The first push rod 1102 is no longer affected by the electromagnetic effect and naturally extends along one side of the electromagnet 11, pushing the rocking arm 1201 to overcome the resistance of the third spring 1203, so that the rocking arm 1201 rotates in the groove. When the seal body 8 and the bracket 14 move relative to each other, the rocking arm 1201 in the groove will stagger the channel and hit the upper wall of the seal body 8, causing the seal body 8 and the bracket 14 to be unable to move freely, and the horizontal axis 17 cannot completely pass through the semicircular area of ​​the second through groove, so that the flip ink pad 16 in the bracket 14 cannot flip downward, thereby avoiding unauthorized stealing and theft.

[0075] Furthermore, the anti-theft stamping device also includes a lower cover 18, which is arranged at the end of the seal body 8 away from the top cover 4. When the user completes stamping, the lower cover 18 seals the seal body 8 to prevent foreign matter from entering the interior of the seal body 8.

[0076] Specifically, the anti-theft stamping device provided by the present invention has at least the following beneficial effects:

[0077] 1) The present invention includes two verification methods for determining whether the user is an authorized person. The first is that the user sends verification information to the server by using a mobile phone. The server converts the received verification information into a communication signal and sends the communication signal to the communication module. The controller interprets the information received by the communication module to control the power on and off of the electromagnet 11. The second is a fingerprint unlocking method. The user presses the fingerprint on the fingerprint recognition module with his finger. The controller analyzes the fingerprint information and determines whether the user is an authorized person. Therefore, the user can freely choose the unlocking method according to the convenience.

[0078] 2) If the user is determined to be an unauthorized person, the controller controls the electromagnet 11 to cut off the power, and the first push rod 1102 on one side of the electromagnet 11 is naturally pushed out, pushing the rocking arm 1201 to overcome the resistance of the third spring 1203, so that the rocking arm 1201 rotates in the groove. When the seal body 8 and the bracket 14 move relative to each other, the rocking arm 1201 in the groove will stagger the channel and hit the upper wall of the seal body 8, causing the relative movement of the seal body 8 and the bracket 14 to be interrupted. The horizontal axis 17 cannot completely pass through the semicircular area of ​​the second through groove 1406, so that the flip ink pad 16 in the bracket 14 cannot be flipped, that is, the flip ink pad 16 is in a locked state, thereby preventing unauthorized persons from stealing and stealing.

[0079] An anti-theft stamping device includes a seal body 8, a top cover 4, a bracket 14, a swing assembly 12, a telescopic device, a flip ink pad 16, a transverse axis 17, and a main control unit. The bottom of the top cover 4 is connected to the seal body 8 to form a accommodating cavity. The seal body 8 is provided with a channel connected to the accommodating cavity. The top of the bracket 14 extends from the bottom of the seal body 8 into the seal body 8. The bracket 14 is slidably connected to the seal body 8, and the bottom of the bracket 14 is provided with an opening; the swing assembly 12 is movably connected to the top of the bracket 14 and cooperates with the channel; the telescopic device is provided at the top of the bracket 14 and is arranged in parallel with the swing assembly 12. The telescopic device is used to push the swing assembly 12 to swing; The flip ink pad 16 is rotatably connected to the bracket 14; the transverse shaft 17 is provided on the seal body 8 and passes through the flip ink pad 16 to drive the flip ink pad 16 to rotate; the main control unit is provided in the accommodating cavity and is electrically connected to the telescopic device to control the telescopic device to extend and retract; when the telescopic device is in the extended state, the swing assembly 12 deviates from the channel and can support the top wall of the seal body 8, and the print head 1601 of the flip ink pad 16 is located inside the opening; when the telescopic device is in the retracted state, the swing assembly 12 is located on the moving path of the channel, and in the stamping state, the print head 1601 of the flip ink pad 16 is flipped to the outside of the opening. The present invention makes it impossible to stamp a seal in the locked state, thereby preventing the seal from being stolen or stolen.

[0080] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the embodiments disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the claims.

Claims

1. An anti-theft stamping device, comprising a seal body and a top cover, wherein the bottom of the top cover is connected to the seal body to form a receiving cavity, and the seal body is provided with a channel communicating with the receiving cavity, characterized in that: The anti-theft stamping device also includes: Bracket, swing assembly, telescopic device, flip ink pad, horizontal axis and main control unit; among them, The top of the bracket extends from the bottom of the seal body into the seal body, the bracket is slidably connected to the seal body, and the bottom of the bracket is provided with an opening; the top of the bracket is also provided with a second protrusion, and the side of the second protrusion facing away from the telescopic device is provided with a groove; the end of the bracket close to the top cover is provided with a second push rod, and the top of the second push rod is provided with an induction magnet; The swing assembly is movably connected to the top of the bracket and cooperates with the channel. The swing assembly is arranged in the groove. The swing assembly includes: a swing arm; a first protrusion, the first protrusion is arranged on one side of the swing arm; a third spring, one end of the third spring is sleeved on the first protrusion, and the other end is connected to the bottom surface of the groove; a rotating shaft, the rotating shaft passes through the middle of the swing arm, and the ends of the rotating shaft are connected to both sides of the groove; The telescopic device is provided at the top of the bracket and arranged in parallel with the rocking assembly, and is used to push the rocking assembly to rock; the telescopic device includes: an electromagnet; a first push rod, the first push rod is provided on one side of the electromagnet; a second spring, the second spring is sleeved on the first push rod; a pressure plate, the pressure plate is provided at the end of the second spring away from the electromagnet, and a through hole is provided in the middle of the pressure plate for the first push rod to pass through; A limit block is further provided on the top of the bracket, and the limit block is arranged at a position facing the opening of the groove, so that when the telescopic device pushes the rocking arm to rotate, one end of the rocking arm abuts against the limit block to be limited; The flip ink pad is rotatably connected to the bracket; The horizontal axis is arranged on the seal body and passes through the flip ink pad to drive the flip ink pad to rotate; The main control unit is arranged in the accommodating cavity and is electrically connected to the telescopic device to control the telescopic device to extend and retract; When the telescopic device is in an extended state, the swing assembly deviates from the channel and can support the top wall of the seal body, and the print head of the flip ink pad is located on the inner side of the opening; when the telescopic device is in a retracted state, the swing assembly is located on the moving path of the channel, and the print head of the flip ink pad flips to the outside of the opening.

2. The anti-theft stamping device according to claim 1, characterized in that: The anti-theft stamping device also includes: A first spring is provided between the seal body and the bracket.

3. The anti-theft stamping device according to claim 2, characterized in that: There are at least two first springs, one end of the first spring abuts against the bracket, and the other end abuts against the seal body.

4. The anti-theft stamping device according to claim 1, characterized in that: The main control unit includes: A main control circuit board is provided with an electrically connected communication module and a controller.

5. The anti-theft stamping device according to claim 1, characterized in that: The flip ink pad comprises: A print head flip frame, one end of which is connected to the print head.

6. The anti-theft stamping device according to claim 1, characterized in that: The anti-theft stamping device also includes: The ink cartridge is arranged in the bracket and is located at one end of the bracket close to the top cover.

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