CN216832219U - Printing device with cutter assembly - Google Patents
Printing device with cutter assembly Download PDFInfo
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- CN216832219U CN216832219U CN202121727110.XU CN202121727110U CN216832219U CN 216832219 U CN216832219 U CN 216832219U CN 202121727110 U CN202121727110 U CN 202121727110U CN 216832219 U CN216832219 U CN 216832219U
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Abstract
The application discloses a printing device with a cutter assembly, which comprises a transfer mechanism and a material spraying mechanism; the free end of the transfer mechanism is connected with the material spraying mechanism so as to drive the material spraying mechanism to move and print in the transfer range of the transfer mechanism; spout the material mechanism and include the support frame, locate the cutter unit spare on the support frame and spout the material subassembly. The material spraying component is used for spraying the composite material carrying the fiber yarns for printing; the cutter assembly comprises a cutter and a cutter driving piece, and the cutter driving piece is in driving connection with the cutter so as to drive the cutter to rotate for cutting; when the cutter assembly needs to cut, the transfer mechanism drives the material spraying mechanism to lift, and the cutter driving piece drives the cutter to rotate to the lower part of the nozzle of the material spraying assembly and to cut the fiber filaments by pressing close to the nozzle. Through realizing spouting material subassembly and cutter unit integration, reduced and spouted the height that the material mechanism lifted up, avoided appearing having the cellosilk to remain after the cutting.
Description
Technical Field
The application relates to the field of 3D printing, in particular to a printing device with a cutter assembly.
Background
In 3D prints, continuous carbon fiber 3D prints and forms the combined material blowout of carrying the cellosilk after using cellosilk and thermoplastic matrix material heating to mix and print, because the combined material that carries the cellosilk has high tensile strength, consequently receives people's favor widely, nevertheless in printing the in-process, often need carry out the jump point and print, if the cellosilk is continuous in the jump point in-process, receives this influence easily and prints out the part that does not conform to with required part, influences printing quality.
The existing printer solves the problem of continuous fiber yarn in the jumping process by additionally arranging a cutter component at the outer part or additionally arranging the cutter component in the spraying component, wherein the spraying component needs to be lifted for a certain distance to allow the fiber yarn formed between a nozzle of the spraying component and a part to enter the cutter component for cutting, but the spraying component needs to be lifted for the avoidance of the cutter component, so that a section of fiber yarn is left at the nozzle of the spraying component after cutting, and after the spraying component cuts, a section of fiber yarn is left in the gap between the cutter in the spraying component and the nozzle to influence the precision of secondary printing after jumping, so the secondary printing after jumping needs to recover or stretch the section of fiber yarn to the nozzle, and the recovery or stretching of the fiber yarn needs to be completed together with other parts and the size is not good to be held, the control precision is not high, and the two modes both leave a section of fiber yarn on the part and influence the quality of the part.
SUMMERY OF THE UTILITY MODEL
The application provides a printing device with cutter unit spare spouts material subassembly and cutter unit spare integration through the realization, has reduced and has spouted the height that the material mechanism lifted up, has avoided appearing having the cellosilk to remain after the cutting.
The application discloses a printing device with a cutter assembly, which comprises a transfer mechanism and a material spraying mechanism;
the free end of the transfer mechanism is connected with the material spraying mechanism so as to drive the material spraying mechanism to move and print in the transfer range of the transfer mechanism;
spout the material mechanism and include the support frame, locate cutter unit spare on the support frame spouts the material subassembly.
The material spraying component is used for spraying a composite material carrying fiber yarns for printing;
the cutter assembly comprises a cutter and a cutter driving piece, and the cutter driving piece is in driving connection with the cutter so as to drive the cutter to rotate for cutting;
when the cutter assembly needs to cut, the transfer mechanism drives the material spraying mechanism to lift, and the cutter driving piece drives the cutter to rotate to the position below the spray opening of the material spraying assembly and press close to the spray opening to cut the fiber filaments.
In one embodiment, the cutter assembly further comprises a connecting rod, and one end of the cutter is connected with one end of the connecting rod;
the cutter driving piece is in driving connection with the other end of the connecting rod, so that the cutter can rotate to cut along the axis of the connecting rod.
In one embodiment, the connecting rod is a screw rod, and the cutter driving part comprises a motor, a driving wheel connected with the driving end of the motor and a driven wheel meshed with the driving wheel;
the connecting rod is arranged at the middle shaft of the driven wheel and is connected with the driven wheel screw rod;
when the cutter assembly needs to cut, the cutter driving piece drives the cutter to rotate and move downwards, and the cutter is rotated to the position below the nozzle of the material spraying assembly to cut the fiber filaments; after the fiber filaments are cut, the cutter driving piece drives the cutter to rotate and ascend, and the cutter driving piece rotates to one side of the material spraying assembly to avoid the position.
In one embodiment, the cutter comprises a first connecting part, a second connecting part and a blade part;
the blade part is connected between the first connecting part and the second connecting part;
one end of the first connecting part is rotatably connected with the material spraying assembly;
one end of the second connecting portion is in driving connection with the cutter driving piece, and the cutter is driven by the cutter driving piece to rotate around the outer side of the nozzle of the material spraying assembly.
In one embodiment, the blade portion has blades at both sides facing the rotation direction.
In one embodiment, the cutting edge of the cutting knife is in a triangular structure, and the sharp line of the cutting edge is positioned on one surface, close to the material spraying component, of the cutting knife.
In one embodiment, the material spraying assembly comprises a nozzle and a heating unit provided with a first material inlet, a second material inlet and a material outlet;
the nozzle is arranged at one end of the nozzle, and the other end of the nozzle is connected to the heating unit through the discharge hole;
the fiber yarns and the thermoplastic matrix material enter the heating unit from the first feeding port and the second feeding port respectively, the fiber yarns and the thermoplastic matrix material are heated and mixed by the heating unit to form a composite material carrying the fiber yarns, and the composite material is ejected from the nozzle through the discharge port.
In one embodiment, the material spraying assembly further comprises a heat dissipation unit;
the heat dissipation unit is connected to the heating unit through the second feeding port so as to dissipate heat conducted from the heating unit to the thermoplastic matrix material through the second feeding port.
In one embodiment, the material spraying mechanism further comprises a feeding assembly;
the feeding assembly comprises a first rolling shaft, a second rolling shaft, a first feeding driving part and a second feeding driving part;
the driving end of the first feeding driving piece is connected to the fiber yarn of the first roller, and the fiber yarn is conveyed to the heating block through the first feeding port;
the driving end of the second feeding driving piece is connected with the fiber filaments of the thermoplastic matrix material, and the thermoplastic matrix material is conveyed to the heating block through the second feeding port.
In an embodiment, the first feeding driving member and the second feeding driving member are respectively connected to the first feeding port and the second feeding port through guide pipes.
By last can know, among the printing device with cutter unit spare of this application, spout material subassembly and cutter unit spare integration through the realization, and make cutter driving piece drive cutter rotate the cutting, thereby only need to let spout the material mechanism and lift up highly formation cutter that suits with cutter thickness and keep away a space and supply the cutter to rotate the cutting cellosilk, and the cellosilk that remains in the part is rolled to the part surface at cutter pivoted in-process, the quality of part has been guaranteed, because spout the material subassembly and lift up highly and cutter thickness and suit, and press close to the spout during cutter cutting, the cellosilk remaining in the spout that spouts the material subassembly is shorter, the secondary is printed and is rolled in the part surface through the spout after the jumping point, can not influence the secondary and print.
Drawings
Fig. 1 is a schematic structural diagram of a material spraying mechanism provided in an embodiment of the present application;
fig. 2 is another schematic structural diagram of a material spraying mechanism provided in the embodiment of the present application;
FIG. 3 is a schematic structural diagram of a cutter according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a feeding assembly provided in an embodiment of the present application.
Detailed Description
Preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present application will be more readily understood by those skilled in the art, and the scope of the present application will be more clearly defined. In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1, fig. 1 shows a structure of a material spraying mechanism provided in an embodiment of the present application.
The application discloses a printing device with a cutter assembly, which comprises a transfer mechanism and a material spraying mechanism; the free end of the transfer mechanism is connected with the material spraying mechanism so as to drive the material spraying mechanism to move and print in the transfer range of the transfer mechanism; spout the material mechanism and include support frame 1, locate cutter unit spare 2 on support frame 1 and spout material subassembly 3. The material spraying component 3 is used for spraying composite materials carrying fiber yarns for printing; the cutter assembly 2 comprises a cutter 21 and a cutter driving part 22, and the cutter driving part 22 is in driving connection with the cutter 21 so as to drive the cutter 21 to rotate for cutting; when the cutter assembly 2 needs to cut, the transfer mechanism drives the material spraying mechanism to lift, and the cutter driving piece 22 drives the cutter 21 to rotate to the lower part of the nozzle of the material spraying assembly 3 and to cut the fiber filaments by pressing close to the nozzle.
Specifically, the transfer mechanism may be a three-axis driving member or a multi-axis driving member, and a free end of the transfer mechanism is connected to the material spraying mechanism to drive the material spraying mechanism to move and print within a transfer range of the transfer mechanism. Cutter unit spare 2 with spout material subassembly 3 and realize integrated into one piece through locating on same support frame 1, the drive end and the cutter 21 of cutter driving piece 22 are connected, make cutter driving piece 22 can drive cutter 21 and rotate the cutting. When jumping printing is needed, firstly, the transfer mechanism drives the material spraying mechanism to lift, a distance is formed between a nozzle of the material spraying component 3 and a part at the moment, a section of composite material carrying a fiber filament is exposed, the fiber filament is in a tensioned state due to the lifting and tensioning action, then the cutter driving part 22 drives the cutter 21 to rotate to the position below the nozzle of the material spraying component 3 and is close to the nozzle to cut the fiber filament, meanwhile, the cutter 21 can be parallel to the plane of the nozzle, the lifting height of the material spraying mechanism driven by the transfer mechanism is matched with the thickness of the cutter 21, so that the fiber filament remained in the part after cutting and the fiber filament remained in the nozzle of the material spraying component 3 are relatively short, the fiber filament remained in the part after cutting is rolled to the surface of the part in the rotating process of the cutter 21, and then the material spraying mechanism is driven by the transfer mechanism to move to the jumping position of the part, at this time, the nozzle of the material spraying component 3 is abutted to the jumping point position of the part, and the fiber filaments remained on the nozzle of the material spraying component 3 are relatively short and are rolled on the surface of the part by the nozzle.
In one embodiment, the cutter assembly 2 further comprises a connecting rod 23, and one end of the cutter 21 is connected with one end of the connecting rod 23; the cutter driving member 22 is drivingly connected to the other end of the connecting rod 23 so that the cutter 21 performs a rotary cutting along the axis of the connecting rod 23. The driving end of the cutter driving piece 22 is indirectly connected with the cutter 21 through a connecting rod 23, so that the cutting edge of the cutter 21 can rotate along the axis of the connecting rod 23, and rotary cutting is realized.
In one embodiment, the connecting rod 23 is a screw rod, and the cutter driving member 22 includes a motor 221, a driving wheel 222 connected to a driving end of the motor 221, and a driven wheel 223 engaged with the driving wheel 222; the connecting rod 23 is arranged at the middle shaft of the driven wheel 223 and is connected with the driven wheel 223 through a screw rod; when the cutter assembly 2 needs to cut, the cutter driving piece 22 drives the cutter 21 to rotate and move downwards, and the cutter is rotated to the position below the nozzle of the material spraying assembly 3 to cut the fiber filaments; after the fiber filaments are cut, the cutter driving member 22 drives the cutter 21 to rotate and rise, and the cutter is rotated to one side of the material spraying assembly 3 to avoid the position.
Specifically, the connecting rod 23 is a lead screw, which may be a large lead screw, and the driving wheel 222 and the driven wheel 223 are gears, which are engaged with each other. When cutter unit 2 need cut, under the lead screw effect, cutter driving piece 22 drive cutter 21 rotates and shifts down, and rotate to spout below cutting cellosilk that spouts material unit 3, cutter 21 rotates spout below screw rod from the initial position and rotates the half-turn, after the completion is to the cutting of cellosilk, cutter driving piece 22 drive cutter 21 rotates and rises, cutter 21 returns the initial position from the spout below and keeps away the position to the spout that spouts material unit 3, keep away the position in one side that spouts material unit 3 and be higher than the spout position that spouts material unit 3 promptly, avoid influencing and print.
Referring to fig. 2 and 3, fig. 2 shows another structure of the material spraying mechanism provided by the embodiment of the present application, and fig. 3 shows a structure of the cutting knife provided by the embodiment of the present application.
In another embodiment, the cutter 21 includes a first connection portion 211, a second connection portion 212, and a blade portion 213; the blade portion 213 is connected between the first connection portion 211 and the second connection portion 212; one end of the first connecting part 211 is rotatably connected with the material spraying component 3; one end of the second connecting portion 212 is drivingly connected to the cutter driving member 22, and the cutter 21 is driven by the cutter driving member 22 to rotate around the outer side of the nozzle of the material spraying assembly 3.
Specifically, first connecting portion 211 and second connecting portion 212 are connected with the both sides of cutting edge portion 213 after bending and are formed the structure similar with U type structure, and cutting edge portion 213 is on a parallel with the spout plane when the cutting, the one end of first connecting portion 211 with spout and be connected in rotation between the material subassembly 3, the one end and the cutter driving piece 22 drive of second connecting portion 212 are connected, and first connecting portion 211 is in a high height with the junction of spouting material subassembly 3 and the junction of second connecting portion 212 and cutter driving piece 22, cutter 21 receives the drive of cutter driving piece 22 to rotate around the spout outside of spouting material subassembly 3, realize rotating the cutting, and can keep away the position in the both sides of spouting material subassembly 3.
In another embodiment, the blade portion 213 is provided with blades at both sides in the rotation direction.
Specifically, set up the cutting edge through the both sides at cutting edge portion 213, make cutter 21 can cut towards two positive and negative directions of rotation direction, when cutter unit 2 need cut, cutter 21 rotates to spout material unit 3's spout below from one side of spouting material unit 3 under cutter driving piece 22's drive and cuts, and rotate to the opposite side of spouting material unit 3 along same rotation direction and keep away the position, when cutter unit 2 need carry out next cutting, the same reason, cutter 21 can accomplish the cutting and keep away the position from another rotation direction, avoid accomplishing once cutting and keep away the position and need positive and negative twice rotation.
In one embodiment, the cutting edge of the cutting knife 21 has a triangular structure, and the sharp line of the cutting edge is positioned on the side of the cutting knife 21 close to the material spraying component 3. After the fiber is cut, the triangular structure of the blade has a guiding rolling effect, so that the fiber remained on the part can be rolled to the surface of the part in the rotating process of the cutter 21.
In one embodiment, the material spraying assembly 3 comprises a nozzle 31 and a heating unit 32 provided with a first feeding port, a second feeding port and a discharging port; the nozzle is arranged at one end of the nozzle 31, and the other end of the nozzle 31 is connected with the heating unit 32 through the discharge hole; the fiber yarns and the thermoplastic matrix material enter the heating unit 32 from the first feeding port and the second feeding port respectively, the fiber yarns and the thermoplastic matrix material are heated and mixed by the heating unit 32 to form a composite material carrying the fiber yarns, and the composite material is sprayed out from the nozzle through the discharge port.
Specifically, a channel is arranged in the heating unit 32 and connected with the first feeding port, the second feeding port and the discharging port, so that the cellosilk and the thermoplastic matrix material respectively enter from the first feeding port and the second feeding port, and are heated and mixed by the heating unit 32 to form a composite material carrying the cellosilk, and the composite material is discharged from the discharging port, the nozzle 31 is arranged in a penetrating manner, one end of the nozzle 31 is a nozzle, the other end of the nozzle 31 is connected with the heating unit 32 through the discharging port, and the composite material carrying the cellosilk and discharged from the discharging port flows through the nozzle 31 and is sprayed out from the nozzle.
In one embodiment, the spraying assembly 3 further includes a heat dissipating unit 33; the heat dissipating unit 33 is connected to the heating unit 32 via a second inlet port for dissipating heat conducted by the heating unit 32 to the thermoplastic matrix material via the second inlet port.
Specifically, the heat dissipating unit 33 is disposed through to form two openings, one of the two openings is connected to the heating unit 32 through the second feeding port, and the other opening is used for the thermoplastic matrix material to enter. Since the heating unit 32 is easy to conduct heat to the thermoplastic matrix material through the second feeding port during heating, the state of the thermoplastic matrix material is affected, and the printing quality is affected, the heat dissipation of the heat dissipation unit 33 is performed, the heat is prevented from being conducted to the thermoplastic matrix material, the state of the thermoplastic matrix material is affected, and the printing quality is prevented from being affected.
Referring to fig. 4, fig. 4 shows a structure of a feeding assembly provided in an embodiment of the present application.
In one embodiment, the material spraying mechanism further comprises a feeding assembly 4; the feeding assembly 4 comprises a first roller 41, a second roller 42, a first feeding driving member 43 and a second feeding driving member 44; the driving end of the first feeding driving piece 43 is connected to the fiber yarn of the first roller 41, and the fiber yarn is conveyed to the heating block through the first feeding port; the drive end of the second feeding drive 44 is connected to the filaments of thermoplastic matrix material and conveys the thermoplastic matrix material to the heating unit 32 through the second feeding port.
Specifically, the first roller 41 and the second roller 42 are rotatably disposed, the first roller 41 is used for winding and storing the fiber filament, the second roller 42 is used for winding and storing the thermoplastic matrix material, the driving end of the first feeding driving member 43 is connected with the fiber filament in a winding manner, and the fiber filament is conveyed to the heating unit 32 through the first feeding port under the driving of the first feeding driving member 43, and the driving end of the second feeding driving member 44 is connected with the thermoplastic matrix material in a winding manner, and the thermoplastic matrix material is conveyed to the heating unit 32 through the second feeding port under the driving of the second feeding driving member 44.
In one embodiment, the first feeding driving member 43 and the second feeding driving member 44 are connected to the first feeding port and the second feeding port through guide pipes 45, respectively. By arranging the guide tube 45, the fiber yarns and the thermoplastic matrix material can be accurately fed into the first feeding port and the second feeding port respectively.
It can be understood that the cutting knife driving member 22, the first feeding driving member 43 and the second feeding driving member 44 can all adopt driving members such as motors, air cylinders, etc. which are commonly used in the art according to practical situations, and therefore, the embodiment of the present application does not limit the type of the driving members which are specifically used.
By last knowing, in the printing device with cutter unit spare of this application, spout material subassembly 3 and cutter unit spare 2 integration through the realization, and make cutter driving piece 22 drive cutter 21 rotate the cutting, thereby only need let spout material mechanism lift and keep away a space with the highly formation cutter that cutter 21 thickness suited and supply cutter 21 to rotate the cutting cellosilk, and the cellosilk that remains in the part is rolled to the part surface at cutter 21 pivoted in-process, the quality of part has been guaranteed, because spout material subassembly 3 lifts highly and cutter 21 thickness suits, and press close to the spout during the cutter 21 cutting, consequently, it is shorter to remain the cellosilk that spouts material subassembly 3's spout, the secondary is printed and is rolled in the part surface through the spout after the jumping point, can not influence the secondary and print.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present application within the knowledge of those skilled in the art.
Claims (10)
1. A printing device with a cutter component is characterized by comprising a transfer mechanism and a material spraying mechanism;
the free end of the transfer mechanism is connected with the material spraying mechanism so as to drive the material spraying mechanism to move and print in the transfer range of the transfer mechanism;
the material spraying mechanism comprises a support frame, a cutter assembly and a material spraying assembly, wherein the cutter assembly and the material spraying assembly are arranged on the support frame;
the material spraying component is used for spraying a composite material carrying fiber yarns for printing;
the cutter assembly comprises a cutter and a cutter driving piece, and the cutter driving piece is in driving connection with the cutter so as to drive the cutter to rotate for cutting;
when the cutter assembly needs to cut, the transfer mechanism drives the material spraying mechanism to lift, and the cutter driving piece drives the cutter to rotate to the position below the spray opening of the material spraying assembly and press close to the spray opening to cut the fiber filaments.
2. The printing apparatus with a cutter assembly of claim 1, wherein the cutter assembly further comprises a connecting rod, one end of the cutter being connected to one end of the connecting rod;
the cutter driving piece is in driving connection with the other end of the connecting rod, so that the cutter can rotate to cut along the axis of the connecting rod.
3. The printing apparatus with a cutter assembly of claim 2, wherein the connecting rod is a lead screw, and the cutter driving member includes a motor, a driving wheel connected to a driving end of the motor, and a driven wheel engaged with the driving wheel;
the connecting rod is arranged at the middle shaft of the driven wheel and is connected with the driven wheel screw rod;
when the cutter assembly needs to cut, the cutter driving piece drives the cutter to rotate and move downwards, and the cutter is rotated to the position below the nozzle of the material spraying assembly to cut the fiber filaments; after the fiber filaments are cut, the cutter driving piece drives the cutter to rotate and ascend, and the cutter driving piece rotates to one side of the material spraying assembly to avoid the position.
4. The printing device with a cutter assembly of claim 1, wherein the cutter includes a first coupling portion, a second coupling portion, and a blade portion;
the blade part is connected between the first connecting part and the second connecting part;
one end of the first connecting part is rotatably connected with the material spraying assembly;
one end of the second connecting portion is in driving connection with the cutter driving portion, and the cutter is driven by the cutter driving portion to rotate around the outer side of the nozzle of the material spraying assembly.
5. The printing apparatus with cutter assembly of claim 4 wherein said blade portion has blades on both sides in the direction of rotation.
6. The printing apparatus with cutter assembly of claim 1 wherein said cutting edge of said cutter is triangular in configuration and has a sharp edge on a side of said cutter adjacent said jet assembly.
7. The printing apparatus with cutter assembly of claim 1, wherein said spray assembly comprises a nozzle and a heating unit having a first inlet, a second inlet, and an outlet;
the nozzle is arranged at one end of the nozzle, and the other end of the nozzle is connected to the heating unit through the discharge hole;
the fiber yarns and the thermoplastic matrix material enter the heating unit from the first feeding port and the second feeding port respectively, the fiber yarns and the thermoplastic matrix material are heated and mixed by the heating unit to form a composite material carrying the fiber yarns, and the composite material is ejected from the nozzle through the discharge port.
8. The printing device with cutter assembly of claim 7, wherein said spray assembly further comprises a heat sink unit;
the heat dissipation unit is connected to the heating unit through the second feeding port so as to dissipate heat conducted from the heating unit to the thermoplastic matrix material through the second feeding port.
9. The printing device with a cutter assembly of claim 8, wherein the material ejection mechanism further comprises a loading assembly;
the feeding assembly comprises a first rolling shaft, a second rolling shaft, a first feeding driving part and a second feeding driving part;
the driving end of the first feeding driving piece is connected to the fiber yarn of the first roller, and the fiber yarn is conveyed to the heating unit through the first feeding port;
the drive end of the second feeding drive is connected to the filaments of the thermoplastic matrix material and conveys the thermoplastic matrix material to the heating unit through the second feeding port.
10. The printing apparatus with a cutter assembly of claim 9, wherein said first and second feed drives are connected to said first and second feed ports by guide tubes, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121727110.XU CN216832219U (en) | 2021-07-27 | 2021-07-27 | Printing device with cutter assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121727110.XU CN216832219U (en) | 2021-07-27 | 2021-07-27 | Printing device with cutter assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216832219U true CN216832219U (en) | 2022-06-28 |
Family
ID=82082167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121727110.XU Active CN216832219U (en) | 2021-07-27 | 2021-07-27 | Printing device with cutter assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216832219U (en) |
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2021
- 2021-07-27 CN CN202121727110.XU patent/CN216832219U/en active Active
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Denomination of utility model: Printing device with cutter assembly Effective date of registration: 20220928 Granted publication date: 20220628 Pledgee: Shenzhen hi tech investment small loan Co.,Ltd. Pledgor: Shenzhen collaborative innovation high tech Development Co.,Ltd. Registration number: Y2022980016859 |