CN206568734U - Seal fastener and use print machine - Google Patents
Seal fastener and use print machine Download PDFInfo
- Publication number
- CN206568734U CN206568734U CN201720123915.0U CN201720123915U CN206568734U CN 206568734 U CN206568734 U CN 206568734U CN 201720123915 U CN201720123915 U CN 201720123915U CN 206568734 U CN206568734 U CN 206568734U
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- connecting portion
- seal
- jig body
- side wall
- plane
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Abstract
The utility model provides a kind of seal fastener and uses print machine, the seal fastener includes fixture dop, connecting portion and jig body, the connecting portion connection fixture dop and jig body of ㄇ types, jig body is placed in the accommodation space of the roof of the connecting portion and the formation of side wall, and the side wall of the connecting portion is connected with the side wall of the jig body, when fixture dop by power straight down and seal with being contacted in the stand-by print surface on inclined-plane when, there is angle between the axial direction of the axial direction of jig body and connecting portion and fixture dop, i.e. relative to connecting portion and fixture dop the inclination of certain angle occurs for jig body, so that seal can completely fit with stand-by print surface, so as to when being capped seal on the perforation, ensure clear with being patterned, position is accurate.
Description
Technical field
The utility model belongs to print machine technical field, and in particular to a kind of seal fastener and use print machine.
Background technology
In order to effectively manage seal and monitor the use of seal, increasing mechanism begins to use with print machine to realize
The closing keeping of seal and the electronization monitoring and management with print process.
At present, have been developed that and a variety of use print machine.For example, some keep print with print machine using rotatable seal storeroom
Chapter, when with print, rotates seal storeroom, required seal is turned to the underface of staking punch, then press this by staking punch
Seal, so as to complete to use print process.Some use print machine then without using special seal storeroom, and use the seal of similar handgrip to perform
Mechanism selects seal, and when with print, the top of seal selects the seal needed for the seal actuating mechanism is moved to, and then moves again
Moving needs to carry out using print with the local of print.Different use print machines respectively have advantage, can be selected according to specifically with print demand
Use.
Kept in above-mentioned use seal storeroom in the use print machine of seal, be typically that seal is fastened in seal fastener, so
Seal fastener is placed in seal storeroom again afterwards.When needing capping seal on the perforation, seal fastener clamping seal makes seal and book
The side of the page turnings such as nationality, file is in contact.Because the side of the page turnings such as books, file has certain angle of inclination, during with print
Seal and stand-by print surface (i.e. the surface that the side of the page turning such as books, file is formed) are difficult to fit completely, are caused with being patterned
Dislocation, it is smudgy the problems such as.
Utility model content
The utility model is used to for above shortcomings are there is provided a kind of seal fastener in the prior art and use print machine
Part solves to use the problem of print effect is poor during capping seal on the perforation.
It is a kind of seal fastener to solve the technical scheme that is used of the utility model technical problem, including fixture dop and use
In the jig body of clamping seal, in addition in the connecting portion of ㄇ types, the roof of the connecting portion is fixed with the fixture dop
Connection, the jig body part is placed in the accommodation space of the roof of the connecting portion and the formation of side wall, and the connection
The side wall in portion is connected with the side wall of the jig body；
When the non-stress of the fixture dop, the jig body and the connecting portion are coaxial；When the fixture dop by
To power straight down and the seal with being contacted in the stand-by print surface on inclined-plane when, the axial direction of the jig body and the company
There is angle between the axial direction of socket part.
It is preferred that, the engraved structure of the side wall is provided through on the side wall of the connecting portion, the engraved structure
Bottom offers the first groove of opening upwards；
The madial wall of the connecting portion is provided with sunk structure in its thickness direction, and the sunk structure is located at the hollow out
The lower section of structure, and the side of the roof of the remote connecting portion of the sunk structure is provided with the second recessed of opening upwards
Position corresponding with second groove is provided with connecting pin on groove, the lateral wall of the connecting portion；
The first alignment pin and the second alignment pin are provided with the side wall of the jig body, first alignment pin passes through institute
State engraved structure and be placed in first groove, second alignment pin is placed in second groove.
It is preferred that, the first inclined-plane tilted upward is formed in the both sides of first groove on the bottom of the engraved structure；
The sunk structure forms the second inclined-plane for tilting upward in the both sides of second groove, second inclined-plane with
First inclined-plane is parallel.
It is preferred that, it is provided with the first position limiting structure, the side wall of the jig body and sets on the madial wall of the connecting portion
It is equipped with the second position limiting structure；
When the fixture dop by power straight down and the seal with being fitted in the stand-by print surface on inclined-plane when, institute
The first position limiting structure is stated to lean with second position limiting structure.
It is preferred that, first position limiting structure includes the first confined planes, and second position limiting structure includes the second confined planes,
Second confined planes are oppositely arranged with first confined planes, and positioned at the lower section of first confined planes.
It is preferred that, the side wall of the connecting portion is in thickness direction formation step, including the first face, the second face and described first
Confined planes, first confined planes connect first face and the second face；
Protuberance is provided with the side wall of the jig body, the upper surface of the protuberance is second confined planes.
It is preferred that, first confined planes are plane, and second confined planes are cambered surface.
Further, the seal fastener also includes connector, and the connector is elastomeric element, and the connector
Connecting pin described in one end is connected, and the other end is connected with first alignment pin.
It is preferred that, the connector is spring.
The technical scheme that solution the utility model technical problem is used is that a kind of use print machine includes above-mentioned seal fastener.
The utility model has the advantages that：
Seal fastener in the utility model and print machine is used, the connecting portion connection fixture dop and jig body of ㄇ types, card
Tool body is placed in the accommodation space of the roof of the connecting portion and the formation of side wall, and the side wall of the connecting portion and the card
The side wall for having body is connected, when fixture dop by power straight down and seal with being in that the stand-by print surface on inclined-plane is contacted when,
There is angle, i.e., jig body is relative to connecting portion and card between the axial direction of the axial direction of jig body and connecting portion and fixture dop
Have the inclination that certain angle occurs for dop, so that seal can completely fit with stand-by print surface, so that when being capped seal on the perforation,
It is accurate with clear, position is patterned to ensure.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the seal fastener of the utility model embodiment；
When Fig. 2 is capped seal on the perforation for the seal fastener of the utility model embodiment, axle and the fixture dop of jig body (connect
Socket part) axle position relationship schematic diagram；
Fig. 3 is the structural representation of the connecting portion side wall of the utility model embodiment；
Fig. 4 is the structural representation of the jig body of the utility model embodiment.
Reference：
1st, fixture dop 2, jig body 3, connecting portion
4th, seal 5, stand-by print surface 6, connector
21st, the first alignment pin 22, the second alignment pin 23, protuberance
31st, roof 32, side wall 33, engraved structure
34th, the first groove 35, sunk structure 36, the second groove
37th, connecting pin 38, the first inclined-plane 39, the second inclined-plane
41st, the first confined planes 42, the second confined planes 321, the first face
322nd, the second face
Embodiment
It is below in conjunction with the accompanying drawings and specific real to make those skilled in the art more fully understand the technical solution of the utility model
Mode is applied to be described in further detail the utility model.
As shown in figure 1, the present embodiment provides a kind of seal fastener, the seal fastener includes fixture dop 1 and fixture sheet
Body 2, jig body is used to clamp seal 4.Shown seal fastener also includes connecting portion 3, and connecting portion 3 is in ㄇ types, including roof 31
With two side walls 32, the two ends of roof 31 are connected with two side walls 32 respectively, roof 31 and two formation accommodation spaces of side wall 32.
The roof 31 of connecting portion 3 is fixedly connected with fixture dop 1, and the part of jig body 2 is placed in the roof 31 and side wall 32 of connecting portion 3
In the accommodation space of formation, and the side wall 32 of connecting portion 3 is connected with the side wall of the jig body 2.Specifically, connecting portion 3
Roof 31 is fixedly connected with the bottom of fixture dop 1, and two side walls 32 of connecting portion 3 clamp and connect the side wall of jig body 2,
The top half of jig body 2 is set to be contained in the accommodation space of the roof 31 of connecting portion 3 and the formation of side wall 32.
As shown in figure 1, fixture dop 1 is fixedly connected with connecting portion 3, relative position therebetween will not change,
I.e. fixture dop 1 is coaxial all the time with connecting portion 3, and the axle of the two is y1.When fixture 1 non-stress of dop, jig body 2 is with connecting
Socket part 3 is coaxial, i.e., fixture dop 1, jig body 2 and the three of connecting portion 3 are coaxial, and the axle of three is y1, the top of jig body 2
Portion and the position of the roof of connecting portion 3 are completely corresponding.
With reference to shown in Fig. 1 and Fig. 2, when fixture dop 1 is by power straight down and seal 4 and the stand-by print table in inclined-plane
During face (i.e. the surface that the side of the page turning such as books, file is formed) 5 contact, the axle y2 of the jig body 1 and axle y1 of connecting portion 3
Between have angle α so that seal 4 can completely fit with stand-by print surface 5.
Specifically, when fixture dop 1 by power straight down and seal 4 with being contacted in the stand-by print surface 5 on inclined-plane after,
Fixture dop 1 continues by power straight down, and now, jig body 2 clamps seal 4 relative to connecting portion 3 and fixture dop 1
The inclination for occurring certain angle is produced, when seal 4 is fitted completely with stand-by print surface 5, axle y2 and the fixture card of jig body 2
Angle α (i.e. the angle of inclination of jig body 2) between first 1 and the axle y1 of connecting portion 3 is stand-by print surface 5 and horizontal plane
Angle.
Seal fastener in the utility model, fixture dop 1 and jig body 2, fixture sheet are connected by the connecting portion 3 of ㄇ types
Body 2 is placed in the accommodation space of the roof 31 of connecting portion 3 and the formation of side wall 32, and the side wall 32 and jig body 2 of connecting portion 3
Side wall be connected, when fixture dop 1 by power straight down and seal 4 with being in that the stand-by print surface 5 on inclined-plane is contacted when, fixture
There is angle, i.e., jig body 2 is relative to connecting portion between the axial y2 and connecting portion 3 of body 2 and the axial y1 of jig body 1
3 and fixture dop 1 occur the inclination of certain angle so that seal 4 can completely fit with stand-by print surface 5, so as to be capped
During seal on the perforation, it is ensured that with being patterned, clear, position is accurate.
The concrete structure of connecting portion 3 is described in detail below in conjunction with Fig. 1 and Fig. 3, and combines Fig. 1 and Fig. 4 to fixture
The concrete structure of body 2 is described in detail.
With reference to shown in Fig. 1 and Fig. 3, the engraved structure 33 of side wall 32, hollow out knot are provided through on the side wall 32 of connecting portion 3
The bottom of structure 33 offers the first groove 34 of opening upwards, that is to say, that the first groove 34 is connected with engraved structure 33.Need
It is noted that the bottom of engraved structure 33 refers to the side of roof 31 of the engraved structure 33 away from connecting portion 3, the utility model
The described upper and lower direction referred to when seal fastener is placed and is not used vertically, i.e., refer to towards connecting portion 3 upwards in embodiment
Roof 31 direction.
The madial wall of connecting portion 3 is provided with sunk structure 35 in its thickness direction, and sunk structure 35 is located at engraved structure 33
Lower section, and the side of roof 31 of the sunk structure 35 away from connecting portion 3 is provided with the second groove 36 of opening upwards, that is,
Say, the second groove 36 is connected with sunk structure 35.It is provided with the lateral wall of connecting portion 3 with the corresponding position of the second groove 36
Connecting pin 37.
With reference to shown in Fig. 1 and Fig. 4, the first alignment pin 21 and the second alignment pin 22 are provided with the side wall of jig body, the
Two alignment pins 22 are located at the lower section of the first alignment pin 21, and the distance and the second groove of the second alignment pin 22 and the first alignment pin 21
36 and first groove 34 distance it is equal.First alignment pin 21 is through engraved structure 33 and is placed in the first groove 34, second
Alignment pin 22 is placed in the second groove 36.That is, the free end of the first alignment pin 21 passes through engraved structure 33, extension is simultaneously
The side wall 32 of connecting portion 3 is protruded from, and the free end of the second alignment pin 22 is then located in the second groove 36.
It is connected by setting engraved structure 33, and by the first groove 34 with engraved structure 33, in fixture dop 1 by perpendicular
Directly during downward power, the first alignment pin 21 can be made smoothly to deviate from from the first groove 34；By setting sunk structure 35, and will
Second groove 36 is connected with sunk structure 35, when fixture dop 1 is by power straight down, can make the second alignment pin 22
Smoothly deviate from from the second groove 36, so, jig body 2 can be disconnected the connection in portion 3, realize and rotate, tilt.
As shown in Figure 3, it is preferred that first tilted upward is formed in the both sides of the first groove 34 on the bottom of engraved structure 33
Inclined-plane 38.Sunk structure 35 forms the second inclined-plane 39 tilted upward, the second inclined-plane 39 and first in the both sides of the second groove 36
Inclined-plane 38 is parallel.
When fixture dop 1 by power straight down and seal 4 with being contacted in the stand-by print surface 5 on inclined-plane after, fixture card
First 1 continues by power straight down, and now, the first alignment pin 21 and the second alignment pin 22 are respectively from the first groove 34 and second
Deviate from groove 35, so, the clamping of jig body 2 seal 4 can be produced relative to connecting portion 3 and fixture dop 1 to be occurred necessarily
The inclination of angle.In tilting procedure, the first alignment pin 21 and the second alignment pin 22 can respectively with the first inclined-plane 38 and second
Inclined-plane 39 leans, and is slided respectively along the first inclined-plane 38 and the second inclined-plane 39, i.e. the first inclined-plane 38 and the second inclined-plane 39 can
Guide effect is played relative to connecting portion 3 and the run-off the straight of fixture dop 1 to jig body 2, is easy to control inclining for jig body 2
Rake angle.
Further, with reference to shown in Fig. 1,3,4, the first position limiting structure, jig body are provided with the madial wall of connecting portion 3
The second position limiting structure is provided with 2 side wall.When fixture dop 1 by power straight down and seal 4 with the stand-by of inclined-plane
When printing surface laminating, the first position limiting structure leans with the second position limiting structure, so as to realize the limit of jig body 2 and connecting portion 3
Position.
Specifically, as shown in figure 1, the first position limiting structure includes the first confined planes 41, the second position limiting structure includes the second limit
Plane 42, the second confined planes 42 are oppositely arranged with the first confined planes 41, and positioned at the lower section of the first confined planes 41.
Specifically, as shown in figure 3, the side wall 32 of connecting portion 3 forms the side wall of step, i.e. connecting portion 3 in its thickness direction
32 include the first face 321, the second face 322 and the first confined planes 41, and the first confined planes 41 connect the first face 321 and the second face 322.
Protuberance 23 is provided with the side wall of jig body 2, the upper surface of protuberance 23 is the second confined planes 42, the He of the first alignment pin 21
Second alignment pin 22 is arranged on the side wall of protuberance 23.
It is preferred that, the first confined planes 41 are plane, and the second confined planes 42 are cambered surface, so, in seal 4 and treating in inclined-plane
With print surface 5 from touch completely laminating during, the second confined planes 42 and the first confined planes 41 are tangent all the time, make fixture sheet
The inclined direction of body 2 is consistent with the tangential direction of the second confined planes 42, and jig body 2 is tilted with respect to fixture dop 1 and connecting portion 3
It is more easy, also allow for adjusting the relative position between jig body 2 and connecting portion 3.
When fixture dop 1 is by power straight down, jig body 2 clamps seal 4 relative to connecting portion 3 and fixture dop
1 produces after run-off the straight, when seal 4 is fitted completely with the stand-by print surface 5 in inclined-plane, the second confined planes 42 of protuberance 23
Lean, realize to the spacing of jig body 2 and seal 4 so that this is vertical with the first confined planes 41 of the side wall 32 of connecting portion 3
Downward power can be delivered in jig body 2 by the first confined planes 41 and the second confined planes 42, so that jig body 2 be pressed from both sides
The seal 4 held is tightly pressed against on stand-by print surface 5, strengthens the controllability and stability of seal, when being capped seal on the perforation, further
It is accurate with clear, position is patterned to ensure.
Further, as shown in figure 1, shown seal fastener also includes connector 6, connector 6 is elastomeric element, and is connected
One end of part 6 is connected with connecting pin 37, and the other end is connected with the first alignment pin 21.That is one end of connector 6 is set in
On connecting pin 37, the other end is set on the first alignment pin 21 stretched out from engraved structure 33, so that by connecting portion 3 and fixture
Body 2 is connected.
It is preferred that, connector 6 is spring.
When fixture 1 non-stress of dop, connector 6 is in natural mode, when fixture dop 1 is by power straight down,
Fixture dop 1 and connecting portion 3 are moved downward, and the position of the one end for the connector 6 being connected with the first alignment pin 21 is constant, and with connecting
One end of the connected connector 6 of pin 37 is moved downward under the drive of connecting portion 3, on the one hand, make the first alignment pin 21 and the
Two alignment pins 22 are deviate from from the first groove 34 and the second groove 36 respectively；On the other hand, connector 6 is stretched, fixed to first
Position pin 21 produces tensile force, and the direction of the tensile force is downward (i.e. straight down) for the axis direction of jig body 2, i.e., to card
Tool body 2 produces pressure straight down.So, seal 4 can be tightly pressed against on stand-by print surface 5, so as to increase seal 4
With the frictional force between stand-by print surface 5, prevent when seal 4 is just contacted with stand-by print surface 5, seal 4 relative to
Stand-by print surface 5 is skidded, and is improved with print effect；Another aspect, after seal on the perforation has been capped, can be produced by connector 6
Tensile force, makes the first alignment pin 21 and the second alignment pin 22 are synchronous respectively to fall after rise to the first groove 34 and the second groove 36, from
And seal 4 is resetted, it is time saving and energy saving.
Seal is clamped using seal fastener of the present utility model, when seal 4 is in off working state, the first alignment pin 21
It is respectively contained in the second alignment pin 22 in the first groove 34 and the second groove 36 so that jig body 2 is relative to the He of connecting portion 3
Fixture dop 1 will not be rocked, and realize the positioning of seal 4, and now the seal face of seal 4 is vertically downward.When need be capped seal on the perforation
When, the staking punch (not illustrated in figure) of seal storeroom presses fixture dop 1, seal 4 and stand-by print surface (books, the text in inclined-plane
Surface where the side of the page turnings such as part) 5 it is in contact, the first alignment pin 21 and the second alignment pin 22 are respectively from the He of the first groove 34
Deviate from second groove 36 so that jig body 2 can be in the plane perpendicular to the first alignment pin 21 and the second alignment pin 22
Rotate (i.e. run-off the straight), in the process, staking punch continues to press fixture dop 1, so that seal 4 and stand-by print surface 5
Gradually laminating completely, so as to obtain preferable seal on the perforation effect.Seal on the perforation is affixed one's seal after the completion of operation, fixture dop 1 and connecting portion 3
Lift, in the presence of the tensile force of connector 6, the first alignment pin 21 and the second alignment pin 22 are returned to the first groove 34 respectively
In the second groove 36, the reset of seal 4 is realized.
Corresponding the present embodiment also provides one kind print machine, and it includes above-mentioned seal fastener.
Use print machine of the present utility model includes seal fastener, the connecting portion connection fixture dop and jig body of ㄇ types, card
Tool body is placed in the accommodation space of the roof of the connecting portion and the formation of side wall, and the side wall of the connecting portion and the card
The side wall for having body is connected, when fixture dop by power straight down and seal with being in that the stand-by print surface on inclined-plane is contacted when,
There is angle, i.e., jig body is relative to connecting portion and card between the axial direction of the axial direction of jig body and connecting portion and fixture dop
Have the inclination that certain angle occurs for dop, so that seal can completely fit with stand-by print surface, so that when being capped seal on the perforation,
It is accurate with clear, position is patterned to ensure.
It is understood that embodiment of above be merely to illustrate that principle of the present utility model and use it is exemplary
Embodiment, but the utility model is not limited thereto.For those skilled in the art, this is not being departed from
In the case of the spirit and essence of utility model, various changes and modifications can be made therein, and these variations and modifications are also considered as this reality
With new protection domain.
Claims (10)
1. a kind of seal fastener, including fixture dop and the jig body for clamping seal, it is characterised in that also including in ㄇ
The connecting portion of type, the roof of the connecting portion is fixedly connected with the fixture dop, and the jig body part is placed in described
In the accommodation space of roof and side the wall formation of connecting portion, and the side wall and the side wall phase of the jig body of the connecting portion
Even；
When the non-stress of the fixture dop, the jig body and the connecting portion are coaxial；When the fixture dop is by perpendicular
Straight downward power and when the seal in the stand-by print surface on inclined-plane with contacting, the axial direction of the jig body and the connecting portion
Axial direction between have angle.
2. seal fastener according to claim 1, it is characterised in that be provided through on the side wall of the connecting portion described
The engraved structure of side wall, the bottom of the engraved structure offers the first groove of opening upwards；
The madial wall of the connecting portion is provided with sunk structure in its thickness direction, and the sunk structure is located at the engraved structure
Lower section, and the side of the roof of the remote connecting portion of the sunk structure is provided with the second groove of opening upwards, institute
State position corresponding with second groove on the lateral wall of connecting portion and be provided with connecting pin；
The first alignment pin and the second alignment pin are provided with the side wall of the jig body, first alignment pin is engraved through described
Hollow structure is simultaneously placed in first groove, and second alignment pin is placed in second groove.
3. seal fastener according to claim 2, it is characterised in that the bottom of the engraved structure is in first groove
Both sides form the first inclined-plane for tilting upward；
The sunk structure forms the second inclined-plane for tilting upward in the both sides of second groove, second inclined-plane with it is described
First inclined-plane is parallel.
4. seal fastener according to claim 2, it is characterised in that the first limit is provided with the madial wall of the connecting portion
The second position limiting structure is provided with bit architecture, the side wall of the jig body；
When the fixture dop by power straight down and the seal with being fitted in the stand-by print surface on inclined-plane when, described the
One position limiting structure leans with second position limiting structure.
5. seal fastener according to claim 4, it is characterised in that first position limiting structure includes the first confined planes,
Second position limiting structure includes the second confined planes, and the second confined planes are oppositely arranged with first confined planes, and positioned at described
The lower section of first confined planes.
6. seal fastener according to claim 5, it is characterised in that the side wall of the connecting portion is in thickness direction formation platform
Rank, including the first face, the second face and first confined planes, first confined planes connect first face and the second face；
Protuberance is provided with the side wall of the jig body, the upper surface of the protuberance is second confined planes.
7. seal fastener according to claim 6, it is characterised in that first confined planes are plane, second limit
Plane is cambered surface.
8. the seal fastener according to claim any one of 2-7, it is characterised in that also including connector, the connector
For elastomeric element, and one end of the connector is connected with the connecting pin, and the other end is connected with first alignment pin.
9. seal fastener according to claim 8, it is characterised in that the connector is spring.
10. one kind uses print machine, it is characterised in that including：Seal fastener described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720123915.0U CN206568734U (en) | 2017-02-10 | 2017-02-10 | Seal fastener and use print machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720123915.0U CN206568734U (en) | 2017-02-10 | 2017-02-10 | Seal fastener and use print machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206568734U true CN206568734U (en) | 2017-10-20 |
Family
ID=60059614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720123915.0U Active CN206568734U (en) | 2017-02-10 | 2017-02-10 | Seal fastener and use print machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN206568734U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109624530A (en) * | 2019-01-21 | 2019-04-16 | 宁波喜印科技有限公司 | A kind of intelligent seal with fast-assembling function |
| CN113246622A (en) * | 2021-04-14 | 2021-08-13 | 成都师范学院 | Intelligent seal and authentication method |
-
2017
- 2017-02-10 CN CN201720123915.0U patent/CN206568734U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109624530A (en) * | 2019-01-21 | 2019-04-16 | 宁波喜印科技有限公司 | A kind of intelligent seal with fast-assembling function |
| CN113246622A (en) * | 2021-04-14 | 2021-08-13 | 成都师范学院 | Intelligent seal and authentication method |
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