CN102211480A - Inner gap positioning type printing head for automatic number printer - Google Patents
Inner gap positioning type printing head for automatic number printer Download PDFInfo
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- CN102211480A CN102211480A CN 201110089291 CN201110089291A CN102211480A CN 102211480 A CN102211480 A CN 102211480A CN 201110089291 CN201110089291 CN 201110089291 CN 201110089291 A CN201110089291 A CN 201110089291A CN 102211480 A CN102211480 A CN 102211480A
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- type drum
- fixed axis
- marking machine
- locate mode
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Abstract
The invention discloses an inner gap positioning type printing head for an automatic number printer, which comprises a fixed seat, a fixed shaft and a plurality of character wheels, wherein the fixed seat is provided with an accommodating groove; the fixed shaft is fixedly arranged on the fixed seat; the plurality of character wheels are parallelly superposed and accommodated in the accommodating groove; the plurality of character wheels can be separately rotationally sleeved on the fixed shaft in the accommodating groove; the inner ring surface of each character wheel is provided with a positioning groove; and for each character wheel, a positioning hole radially penetrates the fixed shaft, and a positioning mechanism is embedded in the positioning hole; therefore, by forming the positioning hole on the fixed shaft, embedding the positioning mechanism in the positioning hole, and matching the positioning mechanism with the positioning groove on the inner ring surface of each character wheel to rotationally position the character wheel, the plurality of character wheels can be parallelly superposed and sleeved on the fixed shaft, a space between two adjacent character wheels is greatly reduced, and is more easy to match the size of an external industrial sign, a phenomenon that the position is not insufficient cannot occur, and convenience is brought to number printing.
Description
Technical field
The present invention relates to the automatic marking machine art, refer in particular to a kind of interior retaining locate mode printhead of automatic marking machine.
Background technology
Industry sign sign product is that industrial products are realized standardization, normalized important means, a major product of industry sign sign product is the wire size printer, also claim marking machine, its main application is literal and the symbol that prints standard on industry such as plastic bushing (wire size pipe), heat-shrink tube, terminal header band sign, is used for the management and the sign of equipment, circuit etc.
Printhead is the important component part of marking machine, existing printhead mainly includes holder, fixed axis and a plurality of type drum, this fixed axis is fixed on the holder, these a plurality of type drums are set on the fixed axis side by side, these a plurality of type drums can rotate separately respectively, and be provided with shell fragment in the side side of type drum at each type drum, utilize shell fragment that type drum is carried out rotational positioning, select required character code by rotating type drum, utilize shell fragment that type drum is carried out rotational positioning then, carry out the marking operation again.
The print head structure of above-mentioned existing marking machine, select suitable character code to carry out the effect of marking as required though can offer the user, and can carry out quick standard ground marking, really has progressive, but when using, reality but finds still to have many deficiencies on himself structure and the serviceability, the printhead that causes existing marking machine fails to reach best result of use and task performance in practical application, now its shortcoming is summarized as follows:
One, the printhead of tradition is for the ease of installing shell fragment, between adjacent two type drums, be provided with step, this step makes that the distance between the two adjacent type drums is bigger at interval, when the character code figure place more for a long time, causing outside industry sign to go up no enough positions holds, beat sign indicating number and can't standardize, make troubles to playing a sign indicating number operation.
Two, the type drum of the printhead of tradition is by shell fragment band position, and shell fragment easy deformation or damage, and the shell fragment contraposition is inaccurate influences between word concordantly, and it is not good enough to beat yard operation quality.
Three, existing printhead assembling inconvenience, type drum is installed on the fixed axis non-disconnectable, therefore can't change type drum, uses flexibility limited, and at different industrial products, the user need purchase a plurality of printheads, has increased use cost.
Summary of the invention
In view of this, the present invention is directed to the disappearance of prior art existence, its main purpose provides a kind of interior retaining locate mode printhead of automatic marking machine, its can effectively solve adjacent two type drums of printhead of existing marking machine excessive at interval and can't with the problem of industrial mark position, outside size coupling.
Another object of the present invention provides a kind of interior retaining locate mode printhead of automatic marking machine, and its type drum contraposition that can effectively solve the printhead of existing marking machine is forbidden to influence problem concordant between word.
A further object of the present invention provides a kind of interior retaining locate mode printhead of automatic marking machine, and it can effectively solve the printhead assembling inconvenience of existing marking machine, the problem that type drum is non-exchange.
For achieving the above object, the present invention adopts following technical scheme:
A kind of interior retaining locate mode printhead of automatic marking machine includes a holder, a fixed axis and a plurality of type drum; This holder is provided with storage tank, and this fixed axis is installed on the holder; These a plurality of type drums are superimposed side by side each other to be placed in this storage tank, and a plurality of type drums can be set in separately on the fixed axis in the storage tank rotationally, each type drum includes a circumferential body and a plurality of character code piece, these a plurality of character code pieces are distributed on the outer ring surface of circumferential body, and corresponding each character code piece is provided with locating slot in the inner ring surface of circumferential body; At this each type drum, on fixed axis, radially run through and be provided with locating hole, be embedded with the detent mechanism that is used for type drum is carried out rotational positioning in this locating hole, this detent mechanism includes two alignment pins and an elastic component, two openings that this two alignment pin stretches out locating hole respectively movably cooperate setting-in outward and with aforementioned locating slot, and the two ends of this elastic component push respectively in the inner of this two alignment pin.
As a kind of preferred version, described holder is provided with axis hole, and this fixed axis is installed in this axis hole, and the arrival end of this axis hole radially enlarges from inside to outside and is formed with the buffering inclined-plane.
As a kind of preferred version, described holder includes substrate and perpendicular to the extended biside plate of this substrate, this storage tank is surrounded by this substrate and biside plate and forms, and this axis hole runs through this biside plate simultaneously.
As a kind of preferred version, one end of described fixed axis is butted on the wherein lateral surface of side plate, the other end of this fixed axis is provided with holddown groove, one fixed block is embedded in this holddown groove, the two ends of this fixed block are fixed on the lateral surface of another side plate, and a bolt passes the locking that is screwed together of this fixed block and fixed axis.
As a kind of preferred version, further include two annular cushion blocks, this two annular cushion block is set on the fixed axis, and aforementioned a plurality of type drums are located between this two annular cushion block, and the inner ring surface of this two annular cushion block is concordant with the internal face of this axis hole.
As a kind of preferred version, the internal face of the aforementioned relatively axis hole of locating slot on the described type drum inner ring surface is recessed, further be provided with the neutral recess that cooperates setting-in with aforementioned alignment pin on the inner ring surface of this type drum, the degree of depth of this neutral recess is less than the degree of depth of locating slot.
As a kind of preferred version, described locating slot and neutral recess are all V-shaped.
As a kind of preferred version, radially outward protruded out a plurality of boss on the outer ring surface of the circumferential body of described type drum, aforementioned a plurality of character code piece correspondences are arranged on the top end face of these a plurality of boss.
As a kind of preferred version, further include the dialing bar that is used to stir type drum, between the adjacent character code piece of two-phase, be provided with slot on this type drum accordingly, this dialing bar is plugged in this slot.
As a kind of preferred version, described type drum is the special rolling-mill section of SKH-9.
The present invention compared with prior art has tangible advantage and beneficial effect, particularly, and as shown from the above technical solution:
One, by being provided with locating hole in fixed axis, be embedded with detent mechanism in this locating hole, and cooperation utilizes, and locating slot carries out rotational positioning to type drum on the type drum inner ring surface, the mode that has replaced the shell fragment location of tradition, make that these a plurality of type drums can superimposedly side by side each other be set on the fixed axis together, dwindled the interval between adjacent two type drums greatly, more easily with industrial mark position, outside size coupling, the not enough phenomenon in position can not occur, give and beat offering convenience property of sign indicating number operation.
Two, utilize two alignment pins of this detent mechanism and the locating slot on elastic component and the type drum inner ring surface by cooperation, replaced the mode of the shell fragment of tradition from the other location of type drum side, can not occur because of the shell fragment distortion or damage influencing phenomenon concordant between word, locate mode of the present invention more precisely, neatly, can play the sign indicating number operation in quicker standard ground, and promote the quality of playing the sign indicating number operation.
Three, be provided with the buffering inclined-plane by arrival end in axis hole, utilize the guide function on this buffering inclined-plane, can make the alignment pin of detent mechanism enter in the axis hole easily on the one hand, another is convenient, and the alignment pin of this detent mechanism can not flown by the elastic component bullet when fixed axis withdraws from axis hole, and cooperation utilizes this fixed block and bolt that fixed axis locking is installed on the holder, easy to assembly, and can change type drum as required, and use the flexibility height, be beneficial to the reduction use cost.
Four, by on the outer ring surface of circumferential body, outwards having protruded out a plurality of boss, these a plurality of character code piece correspondences are arranged on the top end face of boss, utilize this boss to make high out-of-plane one segment distance of character code piece, can on this distance step of following height, beat sign indicating number, solved the difficult problem that large and small pipe or key etc. can not automatic code-printings, the scope of application obtains enlarging.
For more clearly setting forth architectural feature of the present invention and effect, the present invention is described in detail below in conjunction with accompanying drawing and specific embodiment.
Description of drawings
Fig. 1 is the assembling schematic perspective view of the present invention's preferred embodiment;
Fig. 2 is the exploded view of the present invention's preferred embodiment;
Fig. 3 is the partial assembly drawing of the present invention's preferred embodiment;
Fig. 4 is the sectional view of the present invention's preferred embodiment;
Fig. 5 is the enlarged diagram of type drum in the present invention's the preferred embodiment.
The accompanying drawing identifier declaration:
10, holder 11, substrate
12, side plate 13, erection column
101, storage tank 102, axis hole
103, buffering inclined-plane 20, fixed axis
201, holddown groove 202, locating hole
30, type drum 31, circumferential body
32, character code piece 33, boss
301, locating slot 302, neutral recess
303, slot 41, fixed block
42, screw 43, bolt
50, detent mechanism 51, alignment pin
52, elastic component 60, annular cushion block
70, dialing bar.
The specific embodiment:
Please refer to Fig. 1 to shown in Figure 5, the concrete structure that it has demonstrated the present invention's preferred embodiment includes a holder 10, a fixed axis 20 and a plurality of type drum 30.
Wherein, as shown in Figure 2, this holder 10 is provided with storage tank 101 and axis hole 102, this axis hole 102 is communicated with storage tank 101, holder 10 includes substrate 11 and perpendicular to these substrate 11 extended biside plates 12, extend at the back side of this substrate 11 erection column 13, this erection column 13 is used for being connected with outside the installation, this storage tank 101 is surrounded by this substrate 11 and biside plate 12 and forms, this axis hole 102 runs through this biside plate 12 simultaneously, simultaneously, the arrival end of this axis hole 102 radially enlarges from inside to outside and is formed with buffering inclined-plane 103.
This fixed axis 20 adopts the silk thread cutting of being careful to form, the high no gap of component precision, fixed axis 20 is installed in the aforementioned axis hole 102, the rear end of fixed axis 20 is butted on the lateral surface of side plate 12 wherein, the front end of fixed axis 20 passes biside plate 12, and the front end face of fixed axis 20 is provided with holddown groove 201, one fixed block 41 is embedded in this holddown groove 201, the two ends of this fixed block 41 are fixed on the lateral surface of another side plate 12 by screw 42 respectively, and a bolt 43 passes this fixed block 41 and is screwed together with the front end of fixed axis 20 and locks, and makes fixed axis 20 be fixedly installed on the holder 10 with this.
These a plurality of type drums 30 are superimposed side by side each other to be placed in the aforementioned storage tank 101, and a plurality of type drums 30 can be set in separately on the fixed axis 20 in the storage tank 101 rotationally, each type drum 30 includes a circumferential body 31 and a plurality of character code pieces 32 that are distributed on these circumferential body 31 outer ring surfaces, a plurality of boss 33 have radially outward been protruded out on the outer surface of this circumferential body 31, the height of this boss 33 is 5mm, these a plurality of boss 33 evenly distribute along the outer ring surface of circumferential body 31, between adjacent two boss 33, be formed with neutral gear position, these a plurality of character code piece 32 correspondences are arranged on the top end face of these a plurality of boss 33 and make character code piece 32 exceed circumferential body 31 plane 5mm, corresponding each character code piece 32 is provided with locating slot 301 in the inner ring surface of circumferential body 31, this locating slot 301 is V-shaped, and the aforementioned relatively axis hole of this locating slot 301 102 is recessed, further be provided with neutral recess 302 on the inner ring surface of this type drum 30, this neutral recess 302 is V-shaped, and the degree of depth of neutral recess 302 is less than the degree of depth of aforementioned locating slot 301.And, each type drum 30 all adopts the special rolling-mill section of SKH-9, the silk thread of after heat treatment and subzero treatment, being careful cutting, discharge processing grinds and forms, have indeformable, the hardness height, the characteristic of the strong and long service life of wearability, the font height specification of this character code piece 32 has 1.5mm, 2.0mm, 2.5mm, 3.0mm and can have font size as required made to order, this type drum 30 can also can be the alpha type type drum for the numeric type type drum, their thickness specification standards are unified, and (its thickness of the type drum of the high 1.5mm of word is 2.0mm, its thickness of the type drum of the high 2.0mm of word is 2.2mm, its thickness of the type drum of the high 2.5mm of word is 2.45mm, its thickness of the type drum of the high 3.0mm of word is 3.175mm), and above-mentioned font all adopts the Dotumche standard letter, and font height ratio (1:0.67) is unified with the standard specification of general alpha type type drum.In addition, have six type drums 30 in the present embodiment, so that can get six figure places during marking, certainly also can have more long number as required made to order, not exceeding, when not needing six figure places as marking, the type drum 30 of a side wherein can be allocated on the neutral gear position fixingly, can get the figure place that needs.
At aforementioned each type drum 30, on fixed axis 20, radially run through and be provided with locating hole 202, be embedded with detent mechanism 50 in this locating hole 202, this detent mechanism 50 is used for type drum 30 is carried out rotational positioning, this detent mechanism 50 includes two alignment pins 51 and elastic component 52, this two alignment pin 51 is arranged at respectively outside two openings of aforementioned locating hole 202, the outer end of two alignment pins 51 is all tapered, two openings that they stretch out locating hole 202 respectively movably cooperate setting-in outward and with aforementioned locating slot 301 or neutral recess 302, this elastic component 52 is a spring, the two ends of this spring are butted on respectively on the inner of this two alignment pin 51, the active force that spring provides two alignment pins 51 to stretch out outside fixed axis 20, when these two alignment pins, 51 protruding fixed axis 20 and when embedding aforementioned locating slot 301, this type drum 30 is located on the fixed axis 20.
And, further include two annular cushion blocks 60, this two annular cushion block 60 is set on the fixed axis 20 and is arranged in aforementioned storage tank 101, and aforementioned a plurality of type drums 30 are located between this two annular cushion block 60, and the inner ring surface of these two annular cushion blocks 60 is concordant with the internal face of aforementioned axis hole 102.
In addition, be provided with dialing bar 70 at type drum 30, this dialing bar 70 is used to stir type drum 30, to should being provided with slot 303 by type drum 30, be provided with slot 303 between the aforementioned two adjacent character code pieces 32, this dialing bar 70 is plugged in the slot 303, jump a number and beat to setting aside lattice when dialing bar 70 is every from 0,1,2,3,4,5,6,7,8 to 9, otherwise upwards beat from 9,8,7,6,5,4,3,2,1 to 0, simple to operate, the number of changing is convenient and swift.
It is as follows that the present embodiment assembling process is described in detail in detail:
During assembling, at first should a plurality of type drums 30 together superimposed side by side as shown in Figure 2, and utilize this two annular cushion block 60 to clamp this a plurality of type drums 30.Then, these a plurality of type drums 30 and two annular cushion blocks 60 are placed in the lump the storage tank 101 of holder 10.Then, two alignment pins 51 of detent mechanism 50 and elastic component 52 are placed locating hole 202 on the fixed axis 20, and the two ends of elastic component 52 are butted on respectively on the inner of two alignment pins 51.Then, the front end of fixed axis 20 arrival end from axis hole 102 is extend into the axis hole 102, two alignment pins 51 of this detent mechanism 50 enter into axis hole 102 like a cork under the guiding on buffering inclined-plane 103, along with slowly going deep into of fixed axis 20 front ends, the alignment pin 51 of this detent mechanism 50 is butted on the inner ring surface of corresponding type drum 30, with this these a plurality of type drums 30 is set on the fixed axis 20.Then, fixed block 41 is embedded in the holddown groove 201 of fixed axis 20 front ends, and the two ends of fixed block 41 are fixed on the side plate 12 by screw 42, simultaneously, use bolt 43 to pass the locking that is screwed together of fixed block 41 and fixed axis 20, this fixed axis 20 was fixed on the holder 10 and did not turn this moment, and assembling finishes (as shown in Figure 1).
During use, poke rod 70 is plugged in the slot 303 of corresponding type drum 30, utilize poke rod 70 to stir corresponding type drum 30 then, when choosing the character code piece 32 that needs, stop to stir and make two alignment pins 51 of detent mechanism 50 all be embedded in the corresponding locating slot 301, at this moment, this type drum 30 is accurately positioned, and promptly can be used for the marking operation.
When needs are changed type drum 30, at first, stir type drum all on the fixed axis 20 30, the alignment pin 51 of detent mechanism 50 is embedded in the corresponding neutral recess 302, so that fixed axis 20 is withdrawed from.Then, bolt 43 unclamped pull down, and fixed axis 20 is withdrawed from the other direction, by in the processes that withdraw from, because the cushioning effect on buffering inclined-plane 103, two alignment pins 51 of this detent mechanism 50 are slowly protruding, can not flown by elastic component 52 bullets at fixed axis 20.Fixed axis 20 is withdrawed from the back and is changed required type drum 30, as described above fixed axis 20 is inserted into fixing can the use in the axis hole 102 then.
Design focal point of the present invention is: at first, by being provided with locating hole in fixed axis, be embedded with detent mechanism in this locating hole, and cooperation utilizes, and locating slot carries out rotational positioning to type drum on the type drum inner ring surface, the mode that has replaced the shell fragment location of tradition, make that these a plurality of type drums can superimposedly side by side each other be set on the fixed axis together, dwindled the interval between adjacent two type drums greatly, more easily with industrial mark position, outside size coupling, the not enough phenomenon in position can not occur, give and beat offering convenience property of sign indicating number operation.Secondly, utilize two alignment pins of this detent mechanism and the locating slot on elastic component and the type drum inner ring surface by cooperation, replaced the mode of the shell fragment of tradition from the other location of type drum side, can not occur because of the shell fragment distortion or damage influencing phenomenon concordant between word, locate mode of the present invention more precisely, neatly, can play the sign indicating number operation in quicker standard ground, and promote the quality of playing the sign indicating number operation.Moreover, be provided with the buffering inclined-plane by arrival end in axis hole, utilize the guide function on this buffering inclined-plane, on the one hand the alignment pin of detent mechanism is entered in the axis hole easily, another is convenient when fixed axis withdraws from axis hole, the alignment pin of this detent mechanism can not flown by the elastic component bullet, and cooperate and to utilize this fixed block and bolt that fixed axis locking is installed on the holder, easy to assembly, and can change type drum as required, use flexibility height is beneficial to the reduction use cost.At last, by on the outer ring surface of circumferential body, outwards having protruded out a plurality of boss, these a plurality of character code piece correspondences are arranged on the top end face of boss, utilize this boss to make high out-of-plane one segment distance of character code piece, can on this distance step of following height, beat sign indicating number, solved the difficult problem that large and small pipe or key etc. can not automatic code-printings, the scope of application obtains enlarging.
The above, it only is preferred embodiment of the present invention, be not that technical scope of the present invention is imposed any restrictions, so every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any trickle modification, equivalent variations and modification that above embodiment did.
Claims (10)
1. the interior retaining locate mode printhead of an automatic marking machine is characterized in that: include a holder, a fixed axis and a plurality of type drum; This holder is provided with storage tank, and this fixed axis is installed on the holder; These a plurality of type drums are superimposed side by side each other to be placed in this storage tank, and a plurality of type drums can be set in separately on the fixed axis in the storage tank rotationally, each type drum includes a circumferential body and a plurality of character code piece, these a plurality of character code pieces are distributed on the outer ring surface of circumferential body, and corresponding each character code piece is provided with locating slot in the inner ring surface of circumferential body; At this each type drum, on fixed axis, radially run through and be provided with locating hole, be embedded with the detent mechanism that is used for type drum is carried out rotational positioning in this locating hole, this detent mechanism includes two alignment pins and an elastic component, two openings that this two alignment pin stretches out locating hole respectively movably cooperate setting-in outward and with aforementioned locating slot, and the two ends of this elastic component push respectively in the inner of this two alignment pin.
2. the interior retaining locate mode printhead of automatic marking machine according to claim 1, it is characterized in that: described holder is provided with axis hole, and this fixed axis is installed in this axis hole, and the arrival end of this axis hole radially enlarges from inside to outside and is formed with the buffering inclined-plane.
3. the interior retaining locate mode printhead of automatic marking machine according to claim 2, it is characterized in that: described holder includes substrate and perpendicular to the extended biside plate of this substrate, this storage tank is surrounded by this substrate and biside plate and forms, and this axis hole runs through this biside plate simultaneously.
4. the interior retaining locate mode printhead of automatic marking machine according to claim 3, it is characterized in that: an end of described fixed axis is butted on the wherein lateral surface of side plate, the other end of this fixed axis is provided with holddown groove, one fixed block is embedded in this holddown groove, the two ends of this fixed block are fixed on the lateral surface of another side plate, and a bolt passes the locking that is screwed together of this fixed block and fixed axis.
5. the interior retaining locate mode printhead of automatic marking machine according to claim 2, it is characterized in that: further include two annular cushion blocks, this two annular cushion block is set on the fixed axis, aforementioned a plurality of type drum is located between this two annular cushion block, and the inner ring surface of this two annular cushion block is concordant with the internal face of this axis hole.
6. the interior retaining locate mode printhead of automatic marking machine according to claim 2, it is characterized in that: the internal face of the aforementioned relatively axis hole of locating slot on the described type drum inner ring surface is recessed, further be provided with the neutral recess that cooperates setting-in with aforementioned alignment pin on the inner ring surface of this type drum, the degree of depth of this neutral recess is less than the degree of depth of locating slot.
7. the interior retaining locate mode printhead of automatic marking machine according to claim 6, it is characterized in that: described locating slot and neutral recess are all V-shaped.
8. the interior retaining locate mode printhead of automatic marking machine according to claim 1, it is characterized in that: radially outward protruded out a plurality of boss on the outer ring surface of the circumferential body of described type drum, aforementioned a plurality of character code piece correspondences are arranged on the top end face of these a plurality of boss.
9. the interior retaining locate mode printhead of automatic marking machine according to claim 1, it is characterized in that: further include the dialing bar that is used to stir type drum, be provided with slot on this type drum between the adjacent character code piece of two-phase accordingly, this dialing bar is plugged in this slot.
10. the interior retaining locate mode printhead of automatic marking machine according to claim 1, it is characterized in that: described type drum is the special rolling-mill section of SKH-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110089291 CN102211480B (en) | 2011-04-11 | 2011-04-11 | Inner gap positioning type printing head for automatic number printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110089291 CN102211480B (en) | 2011-04-11 | 2011-04-11 | Inner gap positioning type printing head for automatic number printer |
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| Publication Number | Publication Date |
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| CN102211480A true CN102211480A (en) | 2011-10-12 |
| CN102211480B CN102211480B (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110089291 Active CN102211480B (en) | 2011-04-11 | 2011-04-11 | Inner gap positioning type printing head for automatic number printer |
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| Country | Link |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104057738A (en) * | 2014-05-29 | 2014-09-24 | 无锡双龙信息纸有限公司 | Dialing device for note number supplying machine |
| CN105730034A (en) * | 2014-12-08 | 2016-07-06 | 余敏守 | Metal workpiece mark printing device |
| CN106696486A (en) * | 2016-11-18 | 2017-05-24 | 优德精密工业（昆山）股份有限公司 | Internal position clamping turning wheel type printing die assembly |
| CN109466194A (en) * | 2018-11-15 | 2019-03-15 | 南京邮电大学 | A kind of metal works impression stamp device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109466194A (en) * | 2018-11-15 | 2019-03-15 | 南京邮电大学 | A kind of metal works impression stamp device |
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|---|---|
| CN102211480B (en) | 2013-05-08 |
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