Square seal
By designing the upper and lower cover structure of the square stamp, and utilizing the ink injection holes and dispersion channels to achieve uniform ink dispersion, the problem of uneven ink replenishment in existing stamps is solved, thereby improving the printing effect and the number of stamps.
Patent Information
- Application Number
- CN202520007380.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2035-01-03
AI Technical Summary
Existing stamp re-inking methods result in uneven ink dispersion, leading to unclear and incomplete patterns during printing.
A square stamp was designed with an upper and lower cover structure. The stamp body has an ink injection hole, an inlet hole, and a dispersion channel. The ink flows into the lower cavity through the ink injection hole and is evenly dispersed to the surface of the stamp pad through the dispersion channel. Combined with the support protrusion and the slot structure, the ink is evenly distributed.
It achieves uniform ink distribution on the stamp pad, improves the integrity and clarity of the printing effect, prevents ink evaporation and foreign matter contamination, and extends the number of stamping cycles.
Smart Images

Figure CN223478597U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of seal technology, specifically a square seal. Background Technology
[0002] A seal is a tool used as a mark of identity. It originated in the Shang and Zhou dynasties and flourished in the Qin and Han dynasties. It was used as a stationery item to mark documents for authentication or signature. Generally, seals are first dipped in ink before being stamped.
[0003] Seals can be made of materials such as metal, wood, and jade. Those printed on wax or sealing wax or on envelopes are called wax seals. Those that do not adhere to ink and leave an embossed effect on a flat surface are called steel seals. The main types of steel seals include name seals, leisure seals, and collector's seals.
[0004] Existing methods for refilling stamp ink typically involve dipping the stamp in ink or internally flushing it with ink to replenish the ink in the stamp pad. However, uneven ink dipping and uneven ink dispersion caused by internal flushing can lead to unclear or incomplete patterns during printing, which has certain shortcomings.
[0005] Therefore, this application provides a square seal to solve the above problems. Utility Model Content
[0006] This application provides a square stamp, aiming to solve the problems mentioned in the background art, where existing stamp ink replenishment methods usually involve dipping the stamp pad in ink or internally flushing the ink to replenish the ink. However, uneven ink dipping and uneven ink dispersion caused by internal flushing can lead to unclear or incomplete patterns during printing, which have certain shortcomings.
[0007] To achieve the above objectives, this application provides the following technical solution: a square seal, comprising an upper cover and a lower cover, and a seal body fastened between the upper cover and the lower cover:
[0008] An upper ink pad is fixedly installed on the upper side of the stamp body facing the upper cover, and a lower ink pad is fixedly installed on the upper side of the stamp body facing the lower cover. The upper ink pad has an upper cavity, and the lower ink pad has a lower cavity. An ink injection hole is fixedly installed in the upper cavity, and a stamp pad is inserted into the lower cavity. The bottom of the ink injection hole has evenly distributed inlet holes, and the top of the lower cavity has several evenly distributed and staggered dispersion channels that communicate with the inlet holes. The stamp pad is in contact with the dispersion channels. Thus, when using the stamp, the upper cover is opened, ink is poured into the ink injection hole, and then the upper cover is closed. The ink flows through the inlet holes into the lower cavity and contacts the stamp pad. The ink gradually disperses along the dispersion channels and evenly penetrates the stamp pad, resulting in a more complete and clear printing effect.
[0009] Preferably, to ensure smooth ink flow, a number of evenly distributed support protrusions are fixedly installed in the lower cavity at the intersection of the dispersing channels, and the stamp pad is fitted onto the support protrusions. This prevents clogging of the dispersing channels.
[0010] Preferably, to secure the top cover, a plurality of evenly distributed upper retaining protrusions are fixedly installed on the inner side wall of the top cover, and a plurality of evenly distributed upper retaining grooves that match the upper retaining protrusions are formed on the outer side wall of the upper printing table. This prevents foreign matter from contaminating the ink.
[0011] Preferably, to secure the lower cover, a plurality of evenly distributed lower retaining protrusions are fixedly installed on the inner side wall of the lower cover, and a plurality of evenly distributed lower retaining grooves adapted to the lower retaining protrusions are formed on the outer side wall of the lower stamp pad. This protects the stamp pad.
[0012] Preferably, to facilitate pattern identification, the top of the cover has a groove for placing cards, making it easy to identify and retrieve the corresponding stamp.
[0013] Preferably, to reduce wear, a number of evenly distributed support feet are fixedly installed at the bottom of the lower cover. This reduces wear on the lower cover.
[0014] Preferably, to prevent corrosion, the stamp body is made of alloy plastic, and the stamp pad is integrally sealed with the edge of the stamp body. Alloy plastic has excellent corrosion resistance to printing ink.
[0015] Preferably, to replenish the ink, a sealed oil reservoir plug filled with sufficient ink is inserted into the ink injection hole. This ensures that the number of stamping cycles is maximized.
[0016] When the top cover of the stamp is opened, ink is poured into the ink injection hole. Then the top cover is closed, and the ink flows into the lower cavity through the inlet hole in the ink injection hole and comes into contact with the stamp pad. The ink is gradually dispersed to the surface of the stamp pad through the dispersion channel and evenly penetrates the stamp pad, making the printing effect of the stamp pad more complete and clear.
[0017] The stamp has a lower cover that is placed on the lower printing plate. Pressing the lower cover causes the lower locking protrusion on the lower cover to engage with the lower locking groove on the lower printing plate, thus fixing the lower cover on the lower printing plate and preventing it from coming off at will. This protects the stamp gasket and prevents ink evaporation. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the top structure of a square seal;
[0019] Figure 2 This is a schematic diagram of the bottom structure of a square seal;
[0020] Figure 3This is a schematic diagram of the top unfolded structure of a square seal;
[0021] Figure 4 This is a schematic diagram of the unfolded bottom structure of a square seal;
[0022] Figure 5 A schematic diagram of the internal structure of a square seal;
[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of a square seal.
[0024] In the picture:
[0025] 1. Top cover; 11. Groove; 2. Bottom cover; 21. Support foot block; 3. Stamp body; 31. Upper ink pad; 32. Lower ink pad; 33. Upper cavity; 34. Lower cavity; 35. Oil filling hole; 36. Stamp gasket; 37. Liquid inlet hole; 38. Dispersion channel; 39. Support protrusion; 310. Upper locking protrusion; 311. Upper locking groove; 312. Lower locking protrusion; 313. Lower locking groove; 314. Oil reservoir plug. Detailed Implementation
[0026] 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0027] Example 1
[0028] This embodiment provides a square seal, such as Figure 1-6 As shown, the seal includes an upper cover 1, a lower cover 2, and a seal body 3 that is fastened between the upper cover 1 and the lower cover 2.
[0029] An upper ink pad 31 is fixedly installed on the side of the stamp body 3 facing the upper cover 1, and a lower ink pad 32 is fixedly installed on the side of the stamp body 3 facing the lower cover 2. An upper cavity 33 is opened in the upper ink pad 31, and a lower cavity 34 is opened in the lower ink pad 32. An oil injection hole 35 is fixedly installed in the upper cavity 33, and a stamp pad 36 is inserted into the lower cavity 34. The bottom of the oil injection hole 35 has evenly distributed liquid inlet holes 37, and the top of the lower cavity 34 has several evenly distributed and staggered dispersion channels 38 that are connected to the liquid inlet holes 37. The stamp pad 36 is in contact with the dispersion channels 38.
[0030] It should be noted that the stamp pad 36 has a height of 1 mm, which, according to the ink flow standard, allows for rapid ink replenishment within 10 minutes, enabling the stamp to be reused as quickly as possible.
[0031] In use, open the top cover 1, fill the ink into the ink injection hole 35, and then close the top cover 1. The ink flows into the lower cavity 34 through the liquid inlet hole 37 in the ink injection hole 35 and comes into contact with the stamp pad 36. The ink is gradually dispersed to the surface of the stamp pad 36 along the dispersion channel 38 and evenly penetrates the stamp pad 36, making the printing effect of the stamp pad 36 more complete and clear.
[0032] Specifically, several evenly distributed support protrusions 39 are fixedly installed in the lower cavity 34 at the intersection of the dispersion channels 38, and the stamp pad 36 is fitted onto the support protrusions 39. In use, after the stamp pad 36 is inserted into the lower cavity 34, the support protrusions 39 provide internal support for the stamp pad 36, so that the stamp pad 36 does not directly adhere to the bottom of the stamp body 3, thus avoiding blockage of the dispersion channels 38.
[0033] More specifically, the inner wall of the upper cover 1 is fixedly equipped with several evenly distributed upper locking protrusions 310, and the outer wall of the upper printing table 31 is provided with several evenly distributed upper locking grooves 311 that are adapted to the upper locking protrusions 310. In use, the upper cover 1 is placed on the upper printing table 31 and pressed down, so that the upper locking protrusions 310 on the upper cover 1 are engaged into the upper locking grooves 311 on the upper printing table 31, thereby fixing the upper cover 1 on the upper printing table 31, thereby sealing the ink injection hole 35, preventing foreign matter from contaminating the ink, and preventing ink evaporation.
[0034] Furthermore, the inner wall of the lower cover 2 is fixedly equipped with several evenly distributed lower locking protrusions 312, and the outer wall of the lower printing plate 32 is provided with several evenly distributed lower locking grooves 313 that are adapted to the lower locking protrusions 312. In use, the lower cover 2 is placed on the lower printing plate 32, and the lower cover 2 is pressed down so that the lower locking protrusions 312 on the lower cover 2 are engaged into the lower locking grooves 313 on the lower printing plate 32, thereby fixing the lower cover 2 on the lower printing plate 32, thus preventing the lower cover 2 from falling off at will, protecting the stamp pad 36, and preventing ink evaporation.
[0035] Furthermore, the top of the cover 1 has a groove 11 for placing cards. In use, the image corresponding to the pattern of the stamp pad 36 is attached to the groove 11 for easy identification and retrieval of the corresponding stamp.
[0036] The bottom of the lower cover 2 is fixedly equipped with several evenly distributed support feet 21. In use, the support feet 21 support the lower cover 2, reducing the contact area between the lower cover 2 and the placement surface, and reducing wear on the lower cover 2.
[0037] Furthermore, the stamp body 3 is made of alloy plastic, and the stamp pad 36 is integrally sealed with the edge of the stamp body 3. During use, the sealing allows the ink to be stored inside the alloy plastic stamp body 3, which provides excellent corrosion resistance to the ink.
[0038] Furthermore, an oil reservoir plug 314, which is sealed and filled with sufficient ink, is inserted into the oil filling hole 35. During use, the oil reservoir plug 314 is used to store the appropriate amount of ink, allowing for timely replenishment. A full fill of ink allows for 50,000 stamping cycles, reaching the maximum number of stamping cycles.
[0039] It should be noted that the size of the oil injection hole should be the size corresponding to the fastest flow rate.
[0040] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.
Claims
1. A square seal, comprising an upper cover (1) and a lower cover (2) and a seal body (3) fastened between the upper cover (1) and the lower cover (2), characterized in that: An upper printing plate (31) is fixedly installed on the side of the stamp body (3) facing the upper cover (1), and a lower printing plate (32) is fixedly installed on the side of the stamp body (3) facing the lower cover (2). An upper cavity (33) is opened in the upper printing plate (31), and a lower cavity (34) is opened in the lower printing plate (32). An oil injection hole (35) is fixedly installed in the upper cavity (33), and a stamp pad (36) is inserted into the lower cavity (34). A liquid inlet hole (37) is evenly distributed at the bottom of the oil injection hole (35), and a number of evenly distributed and staggered dispersion channels (38) are opened at the top of the lower cavity (34) and are connected to the liquid inlet hole (37). The stamp pad (36) is in contact with the dispersion channel (38).
2. A square seal according to claim 1, characterized in that: The lower cavity (34) has several evenly distributed support protrusions (39) fixedly installed at the intersection of the dispersion channels (38), and the stamp pad (36) is attached to the support protrusions (39).
3. A square seal according to claim 1, characterized in that: The inner wall of the upper cover (1) is fixedly installed with several evenly arranged upper card protrusions (310), and the outer wall of the upper printing table (31) is provided with several evenly arranged upper card grooves (311) that are adapted to the upper card protrusions (310).
4. A square seal according to claim 1, characterized in that: The inner wall of the lower cover (2) is fixedly installed with several uniformly arranged lower card protrusions (312), and the outer wall of the lower printing table (32) is provided with several uniformly arranged lower card grooves (313) that are adapted to the lower card protrusions (312).
5. A square seal according to claim 1, characterized in that: The top of the cover (1) has a groove (11) for placing cards.
6. A square seal according to claim 1, characterized in that: The bottom of the lower cover (2) is fixedly installed with several evenly distributed support feet (21).
7. A square seal according to claim 1, characterized in that: The stamp body (3) is made of alloy plastic material, and the stamp pad (36) is integrally sealed with the edge of the stamp body (3).
8. A square seal according to claim 1, characterized in that: An oil reservoir plug (314) with a sealed connection and filled with sufficient ink is inserted into the oil injection hole (35).