A seal mechanism and a stamping device

Abstract

The application provides a seal locking mechanism and a seal mounting and stamping device. The seal locking mechanism is mounted in a seal cylinder of the stamping device and is used for being connected with a seal. A seal mounting clamp is arranged in the seal cylinder. The seal locking mechanism comprises a mounting frame mounted in the seal cylinder. A first elastic member and a second elastic member are slidably arranged on the mounting frame. The seal locking mechanism comprises a circular-like lock block. The circular-like lock block is arranged perpendicularly to a stamping direction. A driving assembly is arranged on the mounting frame. The driving assembly drives the circular-like lock block to rotate, so that the first elastic member, the second elastic member and the seal mounting clamp cannot move along the stamping direction, or the first elastic member and the second elastic member move along the stamping direction. Through small-amplitude rotation of the circular-like lock block, the seal is quickly locked or unlocked, and the safety of seal management is improved.

Description

Technical Field

[0001] This invention belongs to the field of seal equipment technology, specifically relating 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 technical problem to be solved by the present invention is to provide a locking mechanism and stamping device, which realizes the rapid locking or unlocking of the seal by a small-amplitude rotation of a circular locking block, thereby improving the security of seal management.

[0004] To solve the above-mentioned technical problems, embodiments of the present invention provide a locking mechanism assembled inside the stamp cylinder of a stamping device for connecting with a stamp. The stamp cylinder is provided with a stamping clamp. The locking mechanism includes a mounting frame installed inside the stamp cylinder. The mounting frame is provided with a first limiting post perpendicular to the stamping movement direction. A sliding post is vertically arranged on the upper surface of the mounting frame. A fixing plate is provided on the top of the mounting frame. A locking component, a first elastic member and a second elastic member cooperating with the locking component are provided on the sliding post. The first elastic member is connected to the stamping clamp, and the second elastic member is fixedly connected to the stamp cylinder. A limiting groove is provided on the first elastic member, and a second limiting post perpendicular to the stamping movement direction is provided on the second elastic member. The locking assembly includes a near-circular locking block and a locking block mounting plate. The near-circular locking block is arranged perpendicular to the stamping movement direction. The near-circular locking block includes a first semi-arc locking block and a second semi-arc locking block. The locking block mounting plate is provided with a first locking block limiting groove and a second locking block limiting groove. The first locking block limiting groove is correspondingly arranged with the limiting groove and the first limiting post. The second locking block limiting groove is correspondingly arranged with the second limiting post. The mounting frame is equipped with a driving component, which drives a circular locking block to cause the first semi-circular locking block to lock the first limiting post, and the second semi-circular locking block to lock the second limiting post, so that the first elastic element, the second elastic element, and the stamping fixture cannot move along the stamping movement direction; the driving component drives the circular locking block to cause the first semi-circular locking block to disengage from the first locking block limiting groove and the limiting groove, and the second semi-circular locking block to lock the second limiting post, so that the first elastic element and the second elastic element move along the stamping movement direction.

[0005] The driving component includes a stepper motor, which is mounted on a first elastic element and its output end is connected to the center of the circular locking block. The stepper motor drives the circular locking block to rotate along the arc direction.

[0006] The locking block mounting plate is provided with a spring mounting groove, a first spring element is provided in the spring mounting groove, a second spring element is provided on the first elastic element, and both the first spring element and the second spring element are connected to the fixing plate.

[0007] The arc area of ​​the first semi-circular locking block is smaller than the arc area of ​​the second semi-circular locking block.

[0008] The mounting bracket is further provided with a third limiting post, which is disposed on the first limiting post, and the limiting length of the third limiting post is greater than the limiting length of the first limiting post.

[0009] The first semi-circular locking block and the second semi-circular locking block are provided with a first locking groove and a second locking groove, and the depth of the first locking groove is less than the depth of the second locking groove; the depth of the first locking groove is greater than the length of the second limiting post, and the depth of the second locking groove is greater than the length of the third limiting post.

[0010] An embodiment of the present invention also provides a stamping device, including a stamp cylinder and a stamp locking mechanism. The mounting bracket of the stamp locking mechanism is provided with a stamp base on the side near the opening of the stamp cylinder. The stamp base is provided with a downward-facing receiving cavity, and a stamp clamp is installed in the receiving cavity.

[0011] The first elastic element has operating structural elements on both sides that are aligned with the direction of stamping movement. Each operating structural element has a lateral limiting groove. The stamp base has sliding grooves and flipping guide grooves on both sides. The stamping fixture has a connecting shaft that can be inserted into the flipping guide groove and the lateral limiting groove in sequence. The operating structural elements are driven to slide along the sliding grooves, and the stamping fixture moves within the stamp base via the connecting shaft and the first elastic element.

[0012] The beneficial effects of the above technical solution of the present invention are as follows: The present invention includes a stamp tube and a stamp locking mechanism. The mounting frame of the stamp locking mechanism is provided with a stamp base on the side near the opening of the stamp tube. The stamp is provided in the stamp base, and the stamp face of the stamp is open at one end of the stamp tube. Compared with the prior art, the embodiment of this application locks the stamp mechanically after the stamping is completed, avoiding the risk of unauthorized stamping and effectively improving the security of stamp management. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the stamping and sealing device in this invention; Figure 2 This is a schematic diagram of the internal structure of the stamping and sealing device in this invention; Figure 3 This is a schematic diagram of the mounting bracket in the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the structure of the second elastic element in this invention; Figure 5 This is a schematic diagram of the structure of the first elastic element in this invention. Figure 1 ; Figure 6 This is a schematic diagram of the structure of the first elastic element in the present invention. Figure 2 ; Figure 7 This is a schematic diagram of the locking component in the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the circular locking block in the locking assembly of the present invention; Figure 9 This is a schematic diagram of the structure of the locking block mounting plate in the locking assembly of the present invention; Figure 10 This is a schematic diagram of the locking component in this invention. Figure 2 ; Figure 11 This is a schematic diagram of the structure of the seal base in this invention. Figure 1 ; Figure 12 This is a schematic diagram of the structure of the seal base in this invention. Figure 2 ; Figure 13 This is a schematic diagram of the stamping fixture in this invention.

[0014] Explanation of reference numerals in the attached figures: 1. Seal tube; 2. Mounting bracket; 201. First limiting post; 202. Fixing plate; 2021. Mounting hole; 203. Sliding post; 204. Third limiting post; 205. First limiting plate; 206. Second limiting plate; 3. Locking assembly; 301. Circular locking block; 3011. First semi-circular locking block; 3012. Second semi-circular locking block; 3013. First locking groove; 3014. Second locking groove; 302. Lock block mounting plate; 3021. First locking block limiting groove; 3022. Second locking block limiting groove; 3023. Spring mounting groove; 3024. Limiting arc groove; 303. First spring element; 305. Guide post; 306. First limit switch; 4. First elastic element; 401. First mounting plate; 402. Drive plate; 4021. Lateral limiting groove; 4022. First sliding groove; 403. Mounting groove; 404. Second limit switch; 405. Third limit switch; 406. Limiting groove; 5. Second elastic element; 501. Second limit post; 502. Fixing block; 503. Second mounting plate; 504. Fixing rod; 505. Fourth limit switch; 506. Second spring element; 6. Drive components (stepper motor); 7. Stamp base; 701. Receiving cavity; 702. Ink cartridge; 703. First slide rail; 704. First flip guide groove; 7041. First straight groove section; 7042. First semi-circular groove section; 7043. Second straight groove section; 705. Second flip shaft; 8. Stamping fixture; 801. First flipping shaft; 802. Second flipping guide groove. Detailed Implementation

[0015] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0016] Because commercially available smart stamping devices typically use a simple clamping and locking mechanism, only satisfying a single up-and-down stamping motion, the stamp returns to its initial position after stamping. The control unit detects this return and sends a locking signal to initiate the locking action. Since existing 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.

[0017] like Figure 1-3As shown, an embodiment of the present invention provides a locking mechanism assembled inside the stamp cylinder 1 of a stamping device for connection with a stamp. The stamp cylinder 1 is provided with a stamp clamp 8. The locking mechanism includes a mounting frame 2 installed inside the stamp cylinder 1. The mounting frame 2 is provided with a first limiting post 201 perpendicular to the stamping movement direction. A sliding post 203 is vertically arranged on the upper surface of the mounting frame 2. A fixing plate 202 is provided on the top of the mounting frame 2. The sliding post 203 is provided with a locking component 3, and a first elastic member 4 and a second elastic member 5 cooperating with the locking component 3. The first elastic member 4 is connected to the stamp clamp 8, and the second elastic member 5 is fixedly connected to the stamp cylinder 1. A second limiting post 501 is provided on the second elastic member 5. Further, the second limiting post 501 is set as a cylinder. In this embodiment, a bearing is used as the second limiting post 501 to facilitate the rotation of the near-circular locking block 301. The mounting bracket 2 is also provided with a third limiting post 204, which is arranged parallel to the bottom of the first limiting post 201, and the limiting length of the third limiting post 204 is greater than the limiting length of the first limiting post 201.

[0018] like Figure 7-10 As shown, the locking assembly 3 includes a near-circular locking block 301 and a locking block mounting plate 302. The near-circular locking block 301 is arranged perpendicular to the stamping movement direction. The near-circular locking block 301 includes a first semi-arc locking block 3011 and a second semi-arc locking block 3012. The locking block mounting plate 302 is provided with a first locking block limiting groove 3021 and a second locking block limiting groove 3022. The first locking block limiting groove 3021 is correspondingly arranged with the limiting groove and the first limiting post 201, and the second locking block limiting groove 3022 is correspondingly arranged with the second limiting post 501.

[0019] A first locking groove 3013 and a second locking groove 3014 are provided between the first semi-circular locking block 3011 and the second semi-circular locking block 3012, and the depth of the first locking groove 3013 is less than the depth of the second locking groove 3014; the depth of the first locking groove 3013 is greater than the length of the second limiting post 501, and the depth of the second locking groove 3014 is greater than the length of the third limiting post 204. In this embodiment, the lock block mounting plate 302 is also provided with a limiting arc groove 3024. A first limit switch 306 is provided at the end of the limiting arc groove 3024. A guide post 305 is provided at the bottom of the first semi-circular lock block 3011. The guide post 305 moves with the first semi-circular lock block 3011 and along the limiting arc groove 3024. Since the length of the limiting arc groove 3024 is slightly greater than the arc length of the first semi-circular lock block 3011, when the first semi-circular lock block 3011 rotates completely away from the first lock block limiting groove 3021 and limiting groove 406, that is, when the guide post 305 moves to the end of the limiting arc groove 3024, the first limit switch 306 is triggered, thus determining that the lock has been engaged and stamping can be performed. Specifically, the setting of the limiting arc groove 3024 also restricts the rotation direction of the near-circular lock block 301 to a certain extent, simplifying the setting of the rotation direction of the drive assembly 6.

[0020] Specifically, this type of circular locking block 301 consists of four semi-circular locking blocks. Two semi-circular locking blocks with longer radii correspond to the first limiting post 201 and the second limiting post 501, realizing the locking and unlocking of the stamping device. The first locking groove 3013 and the second locking groove 3014 correspond to the third limiting post 204, realizing the stamping device to prevent duplicate stamping and remove the stamp. In this embodiment, the first locking groove 3013 is located on the left side of the first semi-circular locking block 3011, and the second locking groove 3014 is located on the right side of the first semi-circular locking block 3011. Therefore, the stamp removal function can be completed when the circular locking block 301 is rotated 80° counterclockwise.

[0021] The mounting bracket 2 is provided with a driving component 6, which drives a circular locking block 301, causing the first semi-circular locking block 3011 to lock the first limiting post 201, and the second semi-circular locking block 3012 to lock the second limiting post 501, so that the first elastic element 4, the second elastic element 5 and the stamping clamp 8 cannot move along the stamping movement direction; the driving component 6 drives the circular locking block 301, causing the first semi-circular locking block 3011 to disengage from the first locking block limiting groove 3021 and the limiting groove 406, and the second semi-circular locking block to lock the second limiting post 501, so that the first elastic element 4 and the second elastic element 5 move along the stamping movement direction.

[0022] In this embodiment, the driving component 6 is a stepper motor, which is mounted on the first elastic element 4 and its output end is connected to the center of the semi-circular locking block 301. The stepper motor drives the semi-circular locking block 301 to rotate along the arc direction. By driving the semi-circular locking block 301 to rotate, the movement control of the first semi-circular locking block and the second semi-circular locking block is realized.

[0023] It should be noted that the arc area of ​​the first semi-arc locking block 3011 is smaller than the arc area of ​​the second semi-arc locking block 3012. Due to the setting of the first limiting post 201 and the second limiting post 501, and because the first elastic member 4 is connected to the stamping fixture 8, the first elastic member 4 cannot be driven to move along the stamping direction, so the stamping fixture 8 cannot stamp, thus realizing the functions of locking and unlocking.

[0024] Furthermore, with the seal locked as the initial state, the circular locking block 301 does not rotate, so that the first semi-circular locking block 3011 and the second semi-circular locking block 3012 respectively lock the first limiting post 201 and the second limiting post 501.

[0025] The stepper motor drives the circular locking block 301 to rotate counterclockwise by 40°, causing the first semi-circular locking block 3011 to disengage from the position of the first limiting post 201, while the second semi-circular locking block 3012 has not yet disengaged from the position of the second limiting post 501, thus achieving unlocking.

[0026] The stepper motor drives the circular locking block 301 to rotate 80° counterclockwise again, so that the first semi-circular locking block 3011 and the second semi-circular locking block 3012 are respectively disengaged from the positions of the first limiting post 201 and the second limiting post 501, and the first locking groove 3013 locks the third limiting post 204, thereby achieving seal protection and preventing duplicate stamping.

[0027] The stepper motor drives the circular locking block 301 to rotate 80° counterclockwise, causing the first semi-circular locking block 3011 and the second semi-circular locking block 3012 to disengage from the position of the first limiting post 201. The third limiting post 204 corresponds to the second locking groove 3014 and does not restrict the third limiting post 204. At this time, the first elastic member 4 can slide to the bottom in conjunction with the stamping clamp 8, and the stamp can be removed by combining with the detachable buckle structure.

[0028] The locking block mounting plate 302 is provided with a spring mounting groove 3023, in which a first spring element 303 is disposed. A second spring element 506 is disposed on the first elastic member 4. Both the first spring element 303 and the second spring element 506 are connected to the fixing plate 202. Through the first spring element 303 and the second spring element 506, the first elastic member 4 and the second elastic member 506 can be elastically reset to the top of the mounting bracket 2, thereby protecting the seal.

[0029] In this embodiment, a fixing plate 202 is provided on the top of the mounting frame 2. The fixing plate 202 has a mounting hole 2021. The first spring element 303 and the second spring element 506 are both connected to the fixing plate 202. Specifically, when the stamping count is the last one, after the device detects that the stamp has started to stamp, it causes the stepper motor to drive the circular locking block 301 to rotate again, causing the first locking groove 3013 to rotate to the position of the second limiting post 501. This causes the second elastic element 5 to disengage from the locking assembly 3, so that the first elastic element 4 can quickly rebound due to the elastic force and cannot be linked with the stamping fixture 8 to perform the stamping movement, thereby protecting the stamp. At this time, the second spring element can still slide up and down along the sliding post 203, that is, the stamp cylinder 1 can still slide up and down. When the second spring element rebounds quickly due to the elastic force, the device detects that the second spring element has reset and causes the stepper motor to rotate the circular locking block 301, so that it immediately enters the stamping state.

[0030] An embodiment of the present invention also provides a stamping device, including a stamp cylinder 1 and a stamp locking mechanism. The mounting frame 2 of the stamp locking mechanism is provided with a stamp base 7 on the side near the opening of the stamp cylinder 1. The stamp base 7 is provided with a downward-facing receiving cavity 701, and a stamp clamp 8 is installed in the receiving cavity 701.

[0031] The first elastic element 4 has operating structural components on both sides that are aligned with the stamping movement direction. The operating structural components are provided with a transverse limiting groove 4021. The stamp base 7 has a sliding groove and a flipping guide groove on both sides. The stamping fixture 8 is provided with a connecting shaft. The connecting shaft is close enough to be inserted into the flipping guide groove and the transverse limiting groove 4021 in sequence. The operating structural components are driven to slide along the sliding groove, and the stamping fixture 8 moves within the stamp base 7 via the connecting shaft and the first elastic element 4.

[0032] Based on the above-mentioned stamp tube and locking mechanism, the following is an optional implementation method, which specifically describes a stamping device with a locking mechanism.

[0033] In this embodiment, the stamping device includes a stamp cylinder 1 and a locking mechanism. A mounting frame 2 is provided inside the stamp cylinder 1. A stamp base 7 is provided on the side of the mounting frame 2 of the locking mechanism near the opening of the stamp cylinder 1. A receiving cavity 701 with an opening facing downward is provided inside the stamp base 7. A stamp clamp 8 is installed inside the receiving cavity 701.

[0034] like Figure 3 As shown, a fixing plate 202 extends forward from the top of the mounting bracket 2. The fixing plate 202 has a mounting hole 2021. A first limiting post 201 and a third limiting post 204 are set in the middle. A first limiting plate 205 and a second limiting plate 206 are also set on both sides of the mounting bracket 2.

[0035] The upper surface of the mounting bracket 2 is vertically provided with a sliding column 203. A locking component 3, a first elastic element 4, and a second elastic element 5 are slidably mounted on the sliding column 203. The locking component 3 includes a semi-circular locking block 301 and a locking block mounting plate 302. The first elastic element 4 includes a first mounting plate 401. A stepper motor is mounted on the first mounting plate 401. The locking component 3 is located below the first mounting plate 401. Specifically, with the output end of the stepper motor as the center, the locking block mounting plate 302, the semi-circular locking block 301, and the first mounting plate 401 are arranged sequentially from bottom to top.

[0036] like Figure 4-6 As shown, a drive plate 402 is provided on both sides of the first elastic member 4. A transverse limiting groove 4021 is provided at the bottom of the drive plate 402, and a first sliding groove 4022 is provided on the plate body of the drive plate 402.

[0037] The second elastic element 5 is composed of two fixing blocks 502 and a second mounting plate 503. The second mounting plate 503 is vertically arranged, and the two fixing blocks 502 are respectively disposed at both ends of the second mounting plate 503. A second limiting post 501 is provided on the second mounting plate 503. A mounting groove 403 is provided at the corresponding position of the first mounting plate 401 and the second limiting post 501. Specifically, the structure for locking or unlocking the second elastic element 5 is arranged from bottom to top as the second limiting post 501, a roughly circular locking block 301, and a locking block mounting plate 302, and the second limiting post 501 is fixed to the second elastic element 5 and disposed in the mounting groove 403. A fixing rod 504 is provided on the side of the fixing block 502 near the stamp cylinder 1. The fixing rod 504 passes through the first sliding groove 4022 and is fixedly connected to the stamp cylinder 1.

[0038] In this embodiment, the first elastic element 4 is further provided with a second limit switch 404 and a third limit switch 405, and the second elastic element 5 is provided with a fourth limit switch 505. The second limit switch 404 is correspondingly provided with the first limit plate 205, the third limit switch 405 is correspondingly provided with the second limit plate 206, and the fourth limit switch 505 is correspondingly provided with the lock block mounting plate 302. Taking the stamp-locked state as the initial state, both the first elastic element 4 and the second elastic element 5 are in the initial position at the top of the mounting bracket 2. At this time, whether the second limit switch 404 has moved away from the first limit plate 205 is used to determine whether it is in the initial state. When the first elastic element 4 and the second elastic element 5 are stamping, whether the third limit switch 405 has touched the second limit plate 206 is used to determine whether the stamping action has been completed. When the fourth limit switch 505 has touched the lock block mounting plate 302, and the second limit switch 404 has already touched the first limit plate 205, it is used to determine whether the second elastic element 5 has returned to the initial state. The current stamping and sealing status is determined by setting three limit switches, which in turn controls the stepper motor to lock and unlock the stamp and prevent duplicate stamping.

[0039] The mounting bracket 2, locking component 3, first elastic element 4 and second elastic element 5 can be used as a whole as a control structure to realize the locking, unlocking, preventing duplicate stamping and removing of the stamping device. The stamp can be quickly locked or unlocked by controlling the small-amplitude rotation of the circular locking block 301 by a stepper motor.

[0040] The mounting frame 2 is provided with a stamp base 7 on the side near the opening of the stamp cylinder 1. The stamp base 7 is provided with a downward-facing receiving cavity 701, and the receiving cavity 701 is equipped with a stamp clamp 8.

[0041] like Figure 11 , 12 As shown, an ink cartridge 702 is detachably installed on the top of the receiving cavity 701. The ink surface of the ink pad of the ink cartridge 702 is aligned with the opening of the receiving cavity 701, that is, the ink surface faces the bottom of the stamping fixture 8. When not stamped, the stamp surface of the stamping fixture 8 is pressed tightly against the ink pad of the ink cartridge 702.

[0042] The stamp base 7 has first slide rails 703 on both sides corresponding to the drive plate 402. The first slide rails 703 also have first flip guide grooves 704. The first flip guide grooves 704 include a first straight groove section 7041, a first semi-circular groove section 7042 and a second straight groove section 7043 connected in sequence from top to bottom. The first straight groove section 7041 and the second straight groove section 7043 are both located on the same vertical line. At the same time, the first flip guide groove 704 has a hollow structure. The entire bottom of the first flip guide groove 704 is connected to the receiving cavity 701.

[0043] like Figure 13 As shown, the stamping fixture 8 has a first flip shaft 801 at both ends. The first flip shaft 801 is slidably disposed in the first flip guide groove 704 and passes through the first flip guide groove 704 to be rotatably connected to the transverse limiting groove 4021 disposed in the drive plate 402. The length direction of the transverse limiting groove 4021 intersects the sliding direction of the drive plate 402. A second flip shaft 705 is disposed on the inner side wall of the receiving cavity 701. The stamping fixture 8 is provided with a second flip guide groove 802. The second flip shaft 705 is disposed at the center of the first arc groove segment and is inserted into the second flip guide groove 802.

[0044] When the stamp cylinder 1 moves downwards to stamp, it drives the drive plate 402 to move downwards, thereby causing the first flip shaft 801 to slide downwards along the first flip guide groove 704. When the first flip shaft 801 moves along the first straight groove section 7041, the stamping fixture 8 can be separated from the ink cartridge 702. When the first flip shaft 801 moves to the semi-circular groove section, since the first flip shaft 801 and the second flip shaft 705 remain unchanged in straight distance, but the position of the second flip shaft 705 is relatively fixed, the first rotating shaft can achieve a 180° flip of the stamping fixture when passing through the semi-circular groove section. Also, by continuing to move downwards along the second straight groove section 7043 through the first flip shaft 801, the stamping fixture 8 can be extended from the opening of the receiving cavity 701 of the stamp base 7 to complete the stamping action.

[0045] After the stamping action is completed, the first spring element 303 resets, causing the drive plate 402 to move upward, which in turn causes the first flipping shaft 801 to slide upward along the second straight groove section 7043. After passing through the semi-circular groove section, the stamping fixture 8 flips 180° again, aligning the stamp surface of the stamping fixture 8 with the ink cartridge 702. Finally, the stamping fixture 8 is pressed tightly against the ink pad of the ink cartridge 702, achieving the reset of the stamping fixture 8. It is worth noting that the width of the first flipping guide groove 704 is adapted to the shaft diameter of the first flipping shaft 801, and the width of the second flipping guide groove 802 is adapted to the shaft diameter of the second flipping shaft 705, thereby preventing the stamping fixture 8 from wobbling during flipping.

[0046] Furthermore, the movement of the aforementioned stamp holder 8 within the stamp base 7 is not limited to this; those skilled in the art can choose according to their needs, and no special limitations are made here.

[0047] In summary, in this embodiment, by combining the mounting bracket 2, locking assembly 3, first elastic element 4, and second elastic element 5, and linking the stamp cylinder 1, stamp base 7, and stamp clamp 8, four different states of the stamping device are achieved: locking, unlocking, preventing duplicate stamping, and unloading (with the downward movement direction as the stamping motion). With the seal locked as the initial state, the circular locking block 301 does not rotate, causing the first semi-circular locking block 3011 and the second semi-circular locking block 3012 to respectively engage the first limiting post 201 and the second limiting post 501. Because the first semi-circular locking block 3011 engages the first limiting post 201 in the downward direction, and the second elastic element 5 is engaged by the second semi-circular locking block 3012, neither the first elastic element 4 nor the second elastic element 5 can move downwards. At this time, the seal clamp 8 linked to the first elastic element 4 cannot move downwards, and the seal cylinder 1 connected to the second elastic element 5 cannot move downwards; the entire seal assembly is locked and cannot move downwards.

[0048] A stepper motor drives the circular locking block 301 to rotate counterclockwise by 40°, causing the first semi-circular locking block 3011 to disengage from the position corresponding to the first limiting post 201. Simultaneously, the second semi-circular locking block 3012 remains in position corresponding to the second limiting post 501. Since the first limiting post 201 does not limit the first semi-circular locking block 3011, and the second elastic element 5 is still engaged with the downward-facing second limiting post 501, the second elastic element 5, along with the first elastic element 4, can move downwards. This allows the stamping clamp 8, linked to the first elastic element 4, to move downwards. At this point, unlocking is achieved, and the stamp cylinder 1 slides downwards to stamp. The specific process is as follows: the sliding cylinder 1 causes the second elastic element 5 to drive the first elastic element 4 to move downward. The drive plate 402 set on the first elastic element 4 moves downward along the first slide rail 703, and drives the first flipping shaft 801 in the transverse limiting groove 4021 to slide downward along the first flipping guide groove 704. When the first flipping shaft 801 moves along the first straight groove section 7041, the stamping clamp 8 is separated from the ink cartridge 702. When the first flipping shaft 801 moves to the semi-circular groove section, the stamping clamp 8 completes a 180° flip and continues to move downward along the second straight groove section 7043 through the first flipping shaft 801, so that the stamping clamp 8 extends out from the opening of the receiving cavity 701 of the stamp base 7 and completes the stamping action.

[0049] The stepper motor drives the circular locking block 301 to rotate 80° counterclockwise again, causing the first semi-circular locking block 3011 and the second semi-circular locking block 3012 to simultaneously disengage from the first limiting post 201 and the second limiting post 501 at their respective positions. Meanwhile, the first locking groove 3013 locks the third limiting post 204, thereby causing the second elastic element 5 to disengage from the first elastic element 4, but only to slide on the first sliding groove 4022. That is, the stamp cylinder 1 can move downwards, but is not connected to the stamp clamp 8, thus achieving stamp protection and preventing duplicate stamping.

[0050] The stepper motor drives the circular locking block 301 to rotate counterclockwise by 180° again, so that the first semi-circular locking block 3011 and the second semi-circular locking block 3012 are respectively disengaged from the positions of the first limiting post 201 and the second limiting post 501, and the first locking groove 3013 is also disengaged from the position of the third limiting post 204. Combined with the detachable buckle structure, the seal can be removed.

[0051] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A locking mechanism, assembled inside the stamp cylinder of a stamping device for connecting with a stamp, wherein the stamp cylinder is provided with a stamp clamp, characterized in that, The locking mechanism includes a mounting frame installed inside the stamp cylinder. The mounting frame is provided with a first limiting post perpendicular to the stamping movement direction. A sliding post is vertically arranged on the upper surface of the mounting frame. A fixing plate is provided on the top of the mounting frame. A locking component, a first elastic element and a second elastic element that cooperate with the locking component are provided on the sliding post. The first elastic element is connected to the stamping clamp, and the second elastic element is fixedly connected to the stamp cylinder. A limiting groove is provided on the first elastic element, and a second limiting post perpendicular to the stamping movement direction is provided on the second elastic element. The locking assembly includes a near-circular locking block and a locking block mounting plate. The near-circular locking block is arranged perpendicular to the stamping movement direction. The near-circular locking block includes a first semi-arc locking block and a second semi-arc locking block. The locking block mounting plate is provided with a first locking block limiting groove and a second locking block limiting groove. The first locking block limiting groove is correspondingly arranged with the limiting groove and the first limiting post. The second locking block limiting groove is correspondingly arranged with the second limiting post. The mounting frame is equipped with a driving component, which drives a circular locking block to cause the first semi-circular locking block to lock the first limiting post, and the second semi-circular locking block to lock the second limiting post, so that the first elastic element, the second elastic element, and the stamping fixture cannot move along the stamping movement direction; the driving component drives the circular locking block to cause the first semi-circular locking block to disengage from the first locking block limiting groove and the limiting groove, and the second semi-circular locking block to lock the second limiting post, so that the first elastic element and the second elastic element move along the stamping movement direction.

2. The locking mechanism according to claim 1, characterized in that, The driving component includes a stepper motor, which is mounted on the first elastic element and its output end is connected to the center of the circular locking block. The stepper motor drives the circular locking block to rotate along the arc direction.

3. The locking mechanism according to claim 1, characterized in that, The locking block mounting plate is provided with a spring mounting groove, and a first spring element is provided in the spring mounting groove; a second spring element is provided on the second elastic element, and both the first spring element and the second spring element are connected to the fixing plate.

4. The locking mechanism according to claim 1, characterized in that, The arc area of ​​the first semi-circular locking block is smaller than the arc area of ​​the second semi-circular locking block.

5. The locking mechanism according to claim 1, characterized in that, The mounting bracket is also provided with a third limiting post, which is set on the first limiting post, and the limiting length of the third limiting post is greater than the limiting length of the first limiting post.

6. The locking mechanism according to claim 1, characterized in that, A first locking groove and a second locking groove are provided between the first semi-circular locking block and the second semi-circular locking block, and the depth of the first locking groove is less than the depth of the second locking groove.

7. The locking mechanism according to claim 6, characterized in that, The depth of the first locking groove is greater than the length of the second limiting post, and the depth of the second locking groove is greater than the length of the third limiting post.

8. A stamping device, characterized in that, The device includes a stamp cylinder and a locking mechanism as described in any one of claims 1-7. The mounting bracket of the locking mechanism is provided with a stamp base on the side near the opening of the stamp cylinder. The stamp base is provided with a downward-facing receiving cavity, and a stamp clamp is installed in the receiving cavity.

9. The stamping device according to claim 8, characterized in that, The first elastic element has operating structural components on both sides that are aligned with the stamping movement direction. Each operating structural component has a lateral limiting groove. The stamp base has sliding grooves and flipping guide grooves on both sides. The stamp mounting fixture has a connecting shaft that can be inserted into the flipping guide groove and the lateral limiting groove in sequence. The operating structural component is driven to slide along the sliding groove, and the stamp mounting fixture moves within the stamp base via the connecting shaft and the first elastic element.

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