Locking mechanism and stamping device

Abstract

The application relates to the technical field of seal equipment, and particularly discloses a seal locking mechanism and a seal affixing device. The seal locking mechanism comprises a mounting frame mounted in a seal cylinder; a lock tongue sliding groove is arranged on the mounting frame; a lock tongue sliding block is arranged on the lock tongue sliding groove; a first lock column and a second lock column are arranged in parallel on the lock tongue sliding block; the extension directions of the first lock column, the second lock column and the lock tongue sliding groove are perpendicular to the movement direction of a seal; the first lock column is higher than the second lock column; a first groove and a second groove are arranged in parallel on the side wall of the seal cylinder and are consistent with the movement direction of the seal; the first groove is longer than the second groove; the seal can be quickly locked or unlocked through small-amplitude displacement of plugging and unplugging, and the safety of seal management can be improved.

Description

Technical Field

[0001] This application relates to the field of seal equipment technology, and more specifically, to a locking mechanism and a stamping device. Background Technology

[0002] With societal progress and increasingly sophisticated contract signing methods, the corresponding security management and use of seals have become the last line of defense for enterprise security operations. Commercially available smart seal devices typically employ a simple clamping and locking mechanism, satisfying only a single up-and-down stamping motion. After the stamping motion ends and the seal returns to its initial position, the control unit detects this return and sends a locking signal to initiate the locking action. Because current technology uses a clamping and locking structure, this structure needs to be realigned with the seal's mounting components after the stamping motion. Therefore, resetting and locking takes a considerable amount of time, resulting in the seal surface being exposed externally for an extended period, which is detrimental to seal security management. Summary of the Invention

[0003] The purpose of this application is to provide a locking mechanism and a stamping device, which can quickly lock or unlock the seal through a small displacement of insertion and removal, thereby improving the security of seal management.

[0004] The embodiments of this application are implemented as follows:

[0005] In a first aspect, embodiments of this application provide a locking mechanism, configured within the stamp cylinder of a stamping device for connection with a stamp. The locking mechanism includes a mounting frame installed within the stamp cylinder; the mounting frame is provided with a locking tongue groove, the locking tongue groove is provided with a locking tongue slider, and the locking tongue slider is provided with a first locking post and a second locking post arranged in parallel; the extension directions of the first locking post, the second locking post, and the locking tongue groove are all perpendicular to the direction of stamp movement; the first locking post is higher than the second locking post; the side wall of the stamp cylinder is provided with a first groove and a second groove arranged in parallel and consistent with the direction of stamp movement; the first groove is longer than the second groove; the mounting frame is provided with a driving component; the driving component drives the locking tongue slider to approach or move away from the side wall of the stamp cylinder, causing the first locking post and the second locking post to be inserted into or disengaged from the first groove and the second groove respectively; the driving component drives the locking tongue slider away from the side wall of the stamp cylinder, causing the second locking post to separate from the second groove, and the first locking post is inserted into the first groove and can slide along the first groove under drive.

[0006] As an optional implementation, the drive assembly includes a servo motor and a turntable; the servo motor is mounted on the mounting bracket, and its power output end is connected to the center of the turntable; the turntable is provided with an arc-shaped guide groove, the distance from one end of the arc-shaped guide groove to the center of the turntable is less than the distance from the other end of the arc-shaped guide groove to the center of the turntable; the latch slider is provided with a guide block that inserts into the arc-shaped guide groove; the servo motor drives the turntable to rotate, causing the guide block to slide relative to the arc-shaped guide groove, and driving the latch slider to move.

[0007] As an optional implementation, two latch sliders are provided in the latch groove, and the two latch sliders are driven to move closer to or further away from each other.

[0008] As an optional implementation, the latch slider is provided with a mounting hole, and a spring element is provided in the mounting hole; the ends of the first locking pin and the second locking pin away from the side wall of the cylinder are both inserted into the mounting hole and abut against the spring element.

[0009] As an optional implementation, the mounting bracket includes a latch mounting plate and a servo mounting plate arranged parallel to each other; the latch slide groove is disposed on the side of the latch mounting plate near the servo mounting plate; the servo is disposed on the side of the servo mounting plate away from the latch mounting plate; the latch slider and the turntable are disposed between the latch mounting plate and the servo mounting plate.

[0010] Secondly, this application embodiment also provides a stamping device, including a stamp tube and a locking mechanism as described above; the mounting frame of the locking mechanism is provided with a stamp holder on the side near the opening of the stamp tube, the stamp holder is provided with a stamp, and the stamp face of the stamp is open at one end facing the stamp tube.

[0011] As an optional implementation, the stamp holder is mounted on the mounting frame via a snap-fit ​​assembly.

[0012] As an optional implementation, a machine head assembly is provided at the end of the stamp tube away from the opening, and a return spring is connected to the machine head assembly. The other end of the return spring is connected to the mounting bracket. The mounting bracket is close to the opening of the stamp tube, which causes the return spring to stretch and store elastic potential energy. The release of elastic potential energy causes the mounting bracket to return to its original position.

[0013] As an optional implementation, a sliding component is provided on the outer wall of the stamp cylinder, which is aligned with the direction of stamp movement. The sliding component is provided with an operating structure, which is provided with a connecting hole. The second locking pin is separated from the second slot, and the first locking pin can be inserted into the first slot and the connecting hole in sequence. The operating structure is driven to slide along the sliding component and drives the mounting bracket to move in the first slot through the connecting hole and the first locking pin.

[0014] As an optional implementation, a pressure sensor is provided on the side of the mounting bracket near the stamp holder. The pressure sensor abuts against the stamp holder and is used to detect the force generated between the stamp and the paper surface when stamping.

[0015] The beneficial effects of the embodiments of this application include:

[0016] This application provides a locking mechanism, configured within the stamp cylinder of a stamping device for connection with a stamp. The locking mechanism includes a mounting frame installed within the stamp cylinder; the mounting frame has a locking tongue groove, and the locking tongue groove has a locking tongue slider; the locking tongue slider has a first locking post and a second locking post arranged in parallel; the extension directions of the first locking post, the second locking post, and the locking tongue groove are all perpendicular to the stamp's movement direction; the first locking post is higher than the second locking post; the side wall of the stamp cylinder has a first groove and a second groove arranged in parallel and consistent with the stamp's movement direction; the first groove is longer than the second groove; the mounting frame has a driving component; the driving component drives the locking tongue slider to move closer to or away from the side wall of the stamp cylinder, causing the first locking post and the second locking post to correspondingly insert into or disengage from the first groove and the second groove; the driving component also drives the locking tongue slider away from the side wall of the stamp cylinder, causing the second locking post to separate from the second groove, and the first locking post to insert into the first groove and slide along the first groove under drive. The locking mechanism provided by this application can achieve rapid locking or unlocking of the stamp through small displacements of the insertion and removal of the first locking post and the second locking post, which is beneficial to improving the security of stamp management.

[0017] This application also provides a stamping device, including a stamp cylinder and a locking mechanism. A stamp holder is provided on the side of the mounting frame of the locking mechanism near the opening of the stamp cylinder. A stamp is placed inside the stamp holder, with the stamp face facing one end of the stamp cylinder. Compared to the prior art, this application embodiment locks the stamp mechanically after a number of stamping cycles, avoiding the risk of unauthorized stamping and effectively improving the security of stamp management. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is one of the structural schematic diagrams of the locking mechanism in the embodiments of this application;

[0020] Figure 2 This is a second schematic diagram of the locking mechanism in an embodiment of this application;

[0021] Figure 3This is the third schematic diagram of the locking mechanism in the embodiments of this application;

[0022] Figure 4 This is one of the structural schematic diagrams of the stamping device according to an embodiment of this application;

[0023] Figure 5 This is a second schematic diagram of the stamping device according to an embodiment of this application;

[0024] Figure 6 This is the third schematic diagram of the stamping device in the embodiments of this application;

[0025] Figure 7 This is the fourth schematic diagram of the stamping device in the embodiments of this application.

[0026] Icons: 100-Seal locking mechanism; 101-Seal cylinder; 102-Mounting bracket; 103-Lock tongue slide; 104-Lock tongue slider; 105-First locking pin; 106-Second locking pin; 107-First groove; 108-Second groove; 109-Drive assembly; 110-Servo motor; 111-Turntable; 112-Arc-shaped guide groove; 113-Guide block; 114-Mounting hole; 115-Lock tongue mounting plate; 116-Servo motor mounting plate; 117-Seal clamp; 118-Opening; 119-Head assembly; 120-Operating structure; 121-Connecting hole; 122-Pressure sensor; 123-Snap-on assembly; 124-Seal movement direction. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0029] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Commercially available smart stamping devices typically use a simple clamping and locking mechanism for the stamp, allowing for a single up-and-down stamping motion. After the stamping motion ends and the stamp returns to its initial position, the control unit detects this return and sends a locking signal to initiate the locking action. Because current technology uses a clamping and locking structure, this structure needs to be realigned with the stamp's mounting hardware after the stamping motion. Therefore, resetting and locking takes a considerable amount of time, resulting in the stamp surface being exposed for an extended period, which is detrimental to the secure management of the stamp.

[0032] To address the aforementioned technical problems, this application provides a locking mechanism 100 and a stamping device.

[0033] Reference Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown in the embodiment of this application, a locking mechanism 100 is provided, which is disposed in the stamp cylinder 101 of the stamping device for connecting with the stamp. The locking mechanism 100 includes a mounting frame 102 installed in the stamp cylinder 101; the mounting frame 102 is provided with a locking tongue groove 103, the locking tongue groove 103 is provided with a locking tongue slider 104, and the locking tongue slider 104 is provided with a first locking post 105 and a second locking post 106 arranged in parallel; the extension directions of the first locking post 105, the second locking post 106 and the locking tongue groove 103 are all perpendicular to the stamp movement direction 124; the first locking post 105 is higher than the second locking post 106; and the side wall of the stamp cylinder 101 is provided with There are parallel and parallel first grooves 107 and second grooves 108 that are consistent with the direction of stamp movement 124; the first groove 107 is longer than the second groove 108; a drive assembly 109 is provided on the mounting bracket 102; the drive assembly 109 drives the locking tongue slider 104 to approach or move away from the side wall of the stamp cylinder 101, so that the first locking pin 105 and the second locking pin 106 are inserted into or disengaged from the first groove 107 and the second groove 108 respectively; the drive assembly 109 drives the locking tongue slider 104 away from the side wall of the stamp cylinder 101, so that the second locking pin 106 is separated from the second groove 108, and the first locking pin 105 is inserted into the first groove 107 and can slide along the first groove 107 under drive.

[0034] It should be noted that in this embodiment of the application, the first locking post 105 is longer than the second locking post 106. The arrangement of the first groove 107 and the second groove 108 enables the seal locking mechanism 100 to realize the functions of locking, unlocking, seal surface protection and seal removal.

[0035] When the drive assembly 109 drives the first locking pin 105 and the second locking pin 106 to be inserted into the first slot 107 and the second slot 108 respectively, the movement of the seal clamp and the seal is restricted by the second slot 108, thereby achieving seal locking.

[0036] When the drive assembly 109 drives the locking tongue slider 104 away from the side wall of the stamp cylinder 101, causing the first locking pin 105 and the second locking pin 106 to separate from the first groove 107 and the second groove 108 respectively, the movement path of the stamp holder and the stamp is no longer restricted by the first groove 107 and the second groove 108 of the stamp locking structure. This allows for quick stamp removal, or a return spring can be used to quickly retract the stamp, thus protecting the stamp surface. This effectively shortens the time the stamp surface is exposed to the outside between two adjacent stampings, preventing unauthorized stamping and greatly improving the security of stamp management.

[0037] Since the first locking pin 105 is longer than the second locking pin 106, when the driving assembly 109 drives the locking tongue slider 104 away from the side wall of the stamp cylinder 101, the second locking pin 106 separates from the second groove 108, and the first locking pin 105 is inserted into the first groove 107. At this time, the movement path of the stamp holder and the stamp is limited by the length of the first groove 107, so the stamp can be unlocked and stamped by sliding inside the first groove 107.

[0038] This application provides a locking mechanism 100, which is disposed in the stamp cylinder 101 of the stamping device for connecting with the stamp. The locking mechanism 100 includes a mounting frame 102 installed in the stamp cylinder 101; the mounting frame 102 is provided with a locking tongue groove 103, the locking tongue groove 103 is provided with a locking tongue slider 104, and the locking tongue slider 104 is provided with a first locking post 105 and a second locking post 106 arranged in parallel; the extension directions of the first locking post 105, the second locking post 106 and the locking tongue groove 103 are all perpendicular to the stamp movement direction 124; the first locking post 105 is higher than the second locking post 106; and the side wall of the stamp cylinder 101 is provided with... A first groove 107 and a second groove 108 are parallel and aligned with the direction of seal movement 124; the first groove 107 is longer than the second groove 108; a drive assembly 109 is provided on the mounting bracket 102; the drive assembly 109 drives the locking tongue slider 104 to move closer to or away from the side wall of the seal cylinder 101, so that the first locking pin 105 and the second locking pin 106 are inserted into or disengaged from the first groove 107 and the second groove 108 respectively; the drive assembly 109 drives the locking tongue slider 104 away from the side wall of the seal cylinder 101, so that the second locking pin 106 is separated from the second groove 108, and the first locking pin 105 is inserted into the first groove 107 and can slide along the first groove 107 under drive. The seal locking mechanism 100 provided by this application can achieve rapid locking or unlocking of the seal through the small displacement of the insertion and removal of the first locking pin 105 and the second locking pin 106, which is beneficial to improving the security of seal management.

[0039] Reference Figure 1 , Figure 2 as well as Figure 3 As shown, in one optional implementation, the drive assembly 109 includes a servo motor 110 and a turntable 111; the servo motor 110 is mounted on the mounting bracket 102, and its power output end is connected to the middle of the turntable 111; the turntable 111 is provided with an arc-shaped guide groove 112, the distance from one end of the arc-shaped guide groove 112 to the center of the turntable 111 is less than the distance from the other end of the arc-shaped guide groove 112 to the center of the turntable 111; the latch slider 104 is provided with a guide block 113 that is inserted into the arc-shaped guide groove 112; the servo motor 110 drives the turntable 111 to rotate, causing the guide block 113 to slide relative to the arc-shaped guide groove 112, and driving the latch slider 104 to move.

[0040] Furthermore, this application embodiment further discloses the specific arrangement of the drive component 109. The arrangement of the servo motor 110 and the turntable 111 enables sliding control of the latch slider 104 within the latch groove 103. It should be noted that the distance from one end of the arc-shaped guide groove 112 to the center of the turntable 111 is less than the distance from the other end of the arc-shaped guide groove 112 to the center of the turntable 111. The movement control of the guide block 113 is achieved by varying the distance between the arc-shaped guide groove 112 and the center of the turntable 111. Those skilled in the art can select and configure specific arc-shaped guide grooves 112 as needed.

[0041] In this embodiment, the servo motor 110 drives the turntable 111 to rotate, and different functions are achieved by rotating the turntable 111 to different angles.

[0042] For example, with the seal locked as the initial position, the turntable 111 does not rotate, so that the first locking pin 105 and the second locking pin 106 are respectively inserted into the first slot 107 and the second slot 108.

[0043] Servo motor 110 drives turntable 111 to rotate 25°, causing the second locking pin 106 to separate from the second slot 108, and the first locking pin 105 to be inserted into the first slot 107, thus unlocking the device.

[0044] Servo motor 110 drives turntable 111 to rotate 40°, the first locking pin 105 separates from the first slot 107, the second locking pin 106 separates from the second slot 108, and the protection of the seal surface is achieved in conjunction with the reset spring.

[0045] Servo motor 110 drives turntable 111 to rotate 70°, the first locking pin 105 separates from the first slot 107, and the second locking pin 106 separates from the second slot 108, thus achieving the removal of the seal by combining the detachable snap-fit ​​structure.

[0046] Reference Figure 1 , Figure 2 as well as Figure 3 As shown, as an optional implementation, two latch sliders 104 are provided in the latch groove 103, and the two latch sliders 104 are driven to move closer to or further away from each other.

[0047] Furthermore, this embodiment of the application provides two locking tongue sliders 104, which are symmetrically arranged about the rotation center of the turntable 111, and can be driven to move closer to or further away from the rotation center. The arrangement of two locking tongue sliders 104 can effectively improve the structural stability and reliability of the locking mechanism 100.

[0048] Reference Figure 1 As shown, in one optional implementation, the latch slider 104 is provided with a mounting hole 114, and a spring element is provided in the mounting hole 114; the ends of the first locking pin 105 and the second locking pin 106 away from the side wall of the cylinder 101 are both inserted into the mounting hole 114 and abut against the spring element.

[0049] In this embodiment, a mounting hole 114 is provided on the latch slider 104, and a spring element is provided in the mounting hole 114, so that the first locking pin 105 and the second locking pin 106 can form a spring return mechanism. When the first locking pin 105 and the second locking pin 106 are compressed, the first locking pin 105 and the second locking pin 106 can quickly rebound by elastic force, thus mechanically locking the pin.

[0050] It should be noted that when the stamping count is the last one, the device detects that the stamping has started and issues a command to the servo motor 110 to drive the turntable 111 to rotate. The turntable 111 slides and engages with the spring return mechanism to switch to the locked position. When the stamping action is finished, the elasticity of the spring return mechanism causes the stamp to immediately enter the locked state.

[0051] Reference Figure 1 , Figure 2 as well as Figure 3 As shown, in one optional implementation, the mounting bracket 102 includes a latch mounting plate 115 and a servo mounting plate 116 arranged parallel to each other; a latch slide groove 103 is provided on the side of the latch mounting plate 115 near the servo mounting plate 116; a servo 110 is provided on the side of the servo mounting plate 116 away from the latch mounting plate 115; and a latch slider 104 and a turntable 111 are provided between the latch mounting plate 115 and the servo mounting plate 116.

[0052] Reference Figure 4 , Figure 6 as well as Figure 7 As shown, this application embodiment also provides a stamping device, including a stamp cylinder 101 and a locking mechanism 100 as described above; a stamp holder 117 is provided on the side of the mounting frame 102 of the locking mechanism 100 near the opening 118 of the stamp cylinder 101, and a stamp is provided in the stamp holder 117, with the stamp face of the stamp facing the end of the stamp cylinder 101 with an opening 118.

[0053] Furthermore, a machine head assembly 119 is provided at the end of the stamp cylinder 101 away from the opening 118. A return spring is connected to the machine head assembly 119, and the other end of the return spring is connected to the mounting bracket 102. When the mounting bracket 102 is close to the opening 118 of the stamp cylinder 101, the return spring is stretched to store elastic potential energy, and the release of elastic potential energy causes the mounting bracket 102 to reset.

[0054] Compared to existing technologies, the embodiments of this application lock the seal mechanically after the number of stampings has ended, avoiding the risk of unauthorized stamping and effectively improving the security of seal management.

[0055] The sealing mechanism 100 provided in this application embodiment can achieve different functions at different rotation angles of the turntable 111, and uses a mechanical sealing mechanism to ensure sealing security, avoiding situations where the seal cannot be locked temporarily during signal transmission. Simultaneously, the seal surface protection function also prevents multiple sealing actions from occurring during a single sealing operation. Furthermore, the sliding sealing mechanism of this application embodiment has a more stable and reliable structure.

[0056] Reference Figure 3 As shown, as an optional implementation, the stamp holder is mounted on the mounting bracket 102 via a snap-fit ​​assembly 123.

[0057] It should be noted that the snap-fit ​​assembly 123 enables the stamp holder to be quickly assembled and disassembled, thus facilitating stamp removal. The specific structure of the snap-fit ​​assembly 123 can be selected by those skilled in the art as needed, and no special limitations are made here.

[0058] Reference Figure 2 , Figure 5 , Figure 6 as well as Figure 7 As shown, in one optional implementation, a sliding assembly is provided on the outer wall of the stamp cylinder 101, which is aligned with the stamp movement direction 124. An operating structure 120 is provided on the sliding assembly, and a connecting hole 121 is provided on the operating structure 120. The second locking pin 106 is separated from the second groove 108, and the first locking pin 105 can be inserted into the first groove 107 and the connecting hole 121 in sequence. The operating structure 120 is driven to slide along the sliding assembly, and drives the mounting bracket 102 to move in the first groove 107 through the connecting hole 121 and the first locking pin 105.

[0059] The operating structure 120 can be a movable cover that is slidably sleeved on the outer wall of the cylinder 101, or it can be other structures. Those skilled in the art can make the settings as needed.

[0060] As an optional implementation, the mounting bracket 102 is provided with a pressure sensor 122 on the side near the stamp holder. The pressure sensor 122 is in contact with the stamp holder and is used to detect the force generated between the stamp and the paper surface when stamping.

[0061] Furthermore, the embodiment of this application enables the detection of the stamping status through the setting of pressure sensor 122, which facilitates the controller of the stamping device to control the rotation angle of the servo motor 110.

[0062] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A locking mechanism, disposed within the stamp cylinder of a stamping device for connection with a stamp, characterized in that, The locking mechanism includes a mounting frame installed inside the stamp cylinder; the mounting frame has a locking tongue groove, the locking tongue groove has a locking tongue slider, and the locking tongue slider has a first locking post and a second locking post arranged in parallel; the extension directions of the first locking post, the second locking post, and the locking tongue groove are all perpendicular to the stamp movement direction; the first locking post is higher than the second locking post; the side wall of the stamp cylinder has a first groove and a second groove arranged in parallel and consistent with the stamp movement direction; the first groove is longer than the second groove; the mounting frame has a driving assembly; the driving assembly drives the locking tongue slider to move closer to or away from the side wall of the stamp cylinder, so that the first locking post and the second locking post are correspondingly inserted into or disengaged from the first groove and the second groove. The drive assembly drives the latch slider away from the side wall of the cylinder, causing the second locking pin to separate from the second groove, and the first locking pin is inserted into the first groove and can slide along the first groove under drive; the drive assembly includes a servo motor and a turntable; the servo motor is mounted on the mounting bracket, and its power output end is connected to the middle of the turntable; the turntable is provided with an arc-shaped guide groove, the distance from one end of the arc-shaped guide groove to the center of the turntable is less than the distance from the other end of the arc-shaped guide groove to the center of the turntable; the latch slider is provided with a guide block inserted into the arc-shaped guide groove; the servo motor drives the turntable to rotate, causing the guide block to slide relative to the arc-shaped guide groove, and driving the latch slider to move.

2. The locking mechanism according to claim 1, characterized in that, Two latch sliders are provided in the latch groove, and the two latch sliders are driven to move closer to or further away from each other.

3. The locking mechanism according to claim 1, characterized in that, The latch slider is provided with a mounting hole, and a spring element is provided in the mounting hole; the ends of the first locking pin and the second locking pin away from the side wall of the cylinder are both inserted into the mounting hole and abut against the spring element.

4. The locking mechanism according to claim 1, characterized in that, The mounting bracket includes a latch mounting plate and a servo mounting plate arranged parallel to each other; the latch slide groove is disposed on the side of the latch mounting plate near the servo mounting plate; the servo is disposed on the side of the servo mounting plate away from the latch mounting plate; the latch slider and the turntable are disposed between the latch mounting plate and the servo mounting plate.

5. A stamping device, characterized in that, It includes a stamp tube and a locking mechanism as described in any one of claims 1-4; the mounting frame of the locking mechanism is provided with a stamp holder on the side near the opening of the stamp tube, the stamp holder contains a stamp, and the stamp face of the stamp is open at one end facing the stamp tube.

6. The stamping device according to claim 5, characterized in that, The stamp holder is mounted on the mounting frame via a snap-fit ​​assembly.

7. The stamping device according to claim 5, characterized in that, A machine head assembly is provided at the end of the stamp tube away from the opening. A return spring is connected to the machine head assembly, and the other end of the return spring is connected to the mounting bracket. The mounting bracket is close to the opening of the stamp tube, which causes the return spring to stretch and store elastic potential energy. The release of elastic potential energy causes the mounting bracket to return to its original position.

8. The stamping device according to claim 5, characterized in that, The outer wall of the stamp cylinder is provided with a sliding component that moves in the same direction as the stamp. The sliding component is provided with an operating structure and a connecting hole. The second locking pin is separated from the second slot, and the first locking pin can be inserted into the first slot and the connecting hole in sequence. The operating structure is driven to slide along the sliding component and drives the mounting bracket to move in the first slot through the connecting hole and the first locking pin.

9. The stamping device according to claim 5, characterized in that, The mounting bracket is equipped with a pressure sensor on the side near the stamp holder. The pressure sensor abuts against the stamp holder and is used to detect the force generated between the stamp and the paper surface when stamping.

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