CN208148028U - A kind of general Rib-cutting die covering different-thickness product - Google Patents
A kind of general Rib-cutting die covering different-thickness product Download PDFInfo
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- CN208148028U CN208148028U CN201820270286.9U CN201820270286U CN208148028U CN 208148028 U CN208148028 U CN 208148028U CN 201820270286 U CN201820270286 U CN 201820270286U CN 208148028 U CN208148028 U CN 208148028U
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- rib
- rib cutting
- pin
- cutting
- transmission mechanism
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Abstract
The utility model discloses the general Rib-cutting dies that one kind can cover different-thickness product,Including rib cutting cavity plate,The side of the rib cutting cavity plate is equipped with cleaning device,Rib cutting cavity plate is connected with rib cutting punch-pin by guiding mechanism,The inside of the rib cutting punch-pin is separately installed with monitoring device and thickness adjusting apparatus,The bottom of thickness adjusting apparatus is uniformly provided with rib cutting cutter,The side of the rib cutting cavity plate is fixed with support frame,Support frame is connected with the first transmission mechanism by power mechanism,First transmission mechanism is connect by the second transmission mechanism with rib cutting punch-pin,Originally the general Rib-cutting die of different-thickness product can be covered,Position of the rib cutting cutter in rib cutting punch-pin is adjusted by thickness adjusting apparatus,It is covered convenient for the product to different-thickness,It ensure that the reasonability of design,The burr in mold is cleared up by cleaning device,Its flexibility is good,Mechanization degree is high,It is time saving and energy saving.
Description
Technical field
The utility model relates to Rib-cutting die technical field, specially a kind of general rib cutting that can cover different-thickness product
Mold.
Background technique
In the prior art：The patent that application publication number is 107150376 U of CN, which discloses one kind, can cover different-thickness production
The general Rib-cutting die of product, including upper die component, lower mold assemblies, upper die component includes cope plate, residue glue is gone to fix a cutting tool, rib cutting is gone
Lock is fixed a cutting tool, and lower mold assemblies include lower template, guide post, track, residue glue bottom tool, rib cutting gone to remove lock bottom tool, cope plate and
Lower template is molded by the cooperation of pilot hole and guide post, and residue glue is gone to fix a cutting tool and go residue glue bottom tool to crush-cutting except product
The residue glue at edge, rib cutting go lock fix a cutting tool with rib cutting go lock bottom tool to crush-cutting remove integrated circuit frame company's muscle, track setting
Between upper die component and lower mold assemblies, pilot pin is equipped in track, pilot pin carries out horizontal cross positioning, cleaning to product
Inconvenience is easy to cause burr to be deposited on cutter, greatly reduces cutting-tool's used life.
Utility model content
The technical problems to be solved in the utility model is to overcome existing defect, and different-thickness product can be covered by providing one kind
General Rib-cutting die, it is easy to clean, substantially increase cutting-tool's used life, can effectively solve asking in background technique
Topic.
To achieve the above object, the utility model provides the following technical solutions：It is a kind of to cover the logical of different-thickness product
With Rib-cutting die, including rib cutting cavity plate, the side of the rib cutting cavity plate is equipped with cleaning device, and rib cutting cavity plate passes through guiding mechanism
It is connected with rib cutting punch-pin, the inside of the rib cutting punch-pin is separately installed with monitoring device and thickness adjusting apparatus, thickness tune
The bottom of regulating device is uniformly provided with rib cutting cutter, and the side of the rib cutting cavity plate is fixed with support frame, and support frame passes through engine
Structure is connected with the first transmission mechanism, and first transmission mechanism is connect by the second transmission mechanism with rib cutting punch-pin, the second transmission
Mechanism is connect by rotating mechanism with support frame, and the side of the rib cutting punch-pin is separately installed with open source single-chip microcontroller and Internet of Things dress
It sets, the input terminal for single-chip microcontroller of increasing income is electrically connected with the output end of external power supply.
As a kind of optimal technical scheme of the utility model, the rotating mechanism includes connection frame, and connection frame is fixed on
The top of support frame is equipped with bearing on the connection frame, and the second transmission mechanism is mounted on bearings.
As a kind of optimal technical scheme of the utility model, the power mechanism includes endless screw electric motor, endless screw electric motor peace
Mounted in the side of support frame, the output shaft of the endless screw electric motor is connect by shaft coupling with the first transmission mechanism, and the open source is single
The output end of piece machine is electrically connected with the input terminal of endless screw electric motor.
As a kind of optimal technical scheme of the utility model, first transmission mechanism includes worm screw, and worm screw passes through connection
The output axis connection of axis device and endless screw electric motor, the worm thread are connected with worm gear, and worm gear is mounted on the second transmission mechanism.
As a kind of optimal technical scheme of the utility model, second transmission mechanism includes screw rod, the end of screw rod
It is mounted on the inside of bearing, transmission nut is threaded on the screw rod, rib cutting punch-pin is fixed on the side of transmission nut, institute
Worm gear is stated to be mounted on screw rod.
As a kind of optimal technical scheme of the utility model, the guiding mechanism includes the first engaging lug, the first connection
Ear is fixed on the side of rib cutting cavity plate, and guide rail is fixed at the top of first engaging lug, and sliding block, institute are connected on guide rail
State the side that rib cutting punch-pin is fixed on sliding block.
As a kind of optimal technical scheme of the utility model, the thickness adjusting apparatus includes electric telescopic rod, electronic
Telescopic rod is mounted on the inside of rib cutting punch-pin, and the telescopic end of the electric telescopic rod is fixed with mounting base, and rib cutting cutter is fixed on
The output end of the bottom of mounting base, the open source single-chip microcontroller is electrically connected with the input terminal of electric telescopic rod.
As a kind of optimal technical scheme of the utility model, the monitoring device includes supersonic detector and alarm
Device, alarm is mounted on the side of rib cutting punch-pin, and supersonic detector is mounted on the inside of rib cutting punch-pin, and the ultrasonic wave is visited
Hurt the input terminal of the output end electrical connection open source single-chip microcontroller of instrument, the input terminal of the output end electrical connection alarm for single-chip microcontroller of increasing income.
As a kind of optimal technical scheme of the utility model, the cleaning device includes the second engaging lug, the second connection
Ear is fixed on the side of rib cutting cavity plate, and soft robot, the end of soft robot are equipped at the top of second engaging lug
Dust catcher is installed, the output end of the open source single-chip microcontroller is electrically connected with the input terminal of soft robot and dust catcher respectively.
As a kind of optimal technical scheme of the utility model, the Internet of Things device includes wireless transceiver, wireless receiving and dispatching
Device is mounted on the side of rib cutting punch-pin, and the side of wireless transceiver is equipped with signal amplifier, the defeated of single-chip microcontroller of increasing income
Outlet is electrically connected the input terminal of signal amplifier, the input terminal of the output end electrical connection wireless transceiver of signal amplifier.
Compared with prior art, the utility model has the beneficial effects that：Originally the general rib cutting of different-thickness product can be covered
Mold is adjusted position of the rib cutting cutter in rib cutting punch-pin by thickness adjusting apparatus, convenient for the production to different-thickness
Product are covered, and ensure that the reasonability of design, are cleared up by cleaning device the burr in mold, and flexibility is good,
Mechanization degree is high, time saving and energy saving, can be avoided burr and is deposited on cutter, substantially increase cutting-tool's used life, passes through
Monitoring device is monitored the wear intensity of cutter, safeguards in time to cutter convenient for related personnel, and cutter is avoided not obtain
It safeguards and damages in time, greatly reduce the cost of production.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model side structure schematic diagram；
Fig. 3 is the utility model cross-sectional view of the structure.
In figure：1 rib cutting cavity plate, 2 first engaging lugs, 3 guide rails, 4 sliding blocks, 5 wireless transceivers, 6 signal amplifiers, 7 rib cuttings
Punch-pin, 8 alarms, 9 open source single-chip microcontrollers, 10 dust catchers, 11 soft robots, 12 second engaging lugs, 13 guiding mechanisms, 14 Internet of Things
Device, 15 cleaning devices, 16 support frames, 17 worm gears, 18 worm screws, 19 shaft couplings, 20 endless screw electric motors, 21 connection frames, 22 bearings, 23
Transmission nut, 24 screw rods, 25 first transmission mechanisms, 26 power mechanisms, 27 rotating mechanisms, 28 second transmission mechanisms, 29 ultrasonic waves
Defectoscope, 30 monitoring devices, 31 mounting bases, 32 electric telescopic rods, 33 rib cutting cutters, 34 thickness adjusting apparatus.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-3 is please referred to, the utility model provides a kind of technical solution：A kind of the general of different-thickness product that cover is cut
Muscle mold, including rib cutting cavity plate 1, the side of rib cutting cavity plate 1 are equipped with cleaning device 15, and rib cutting cavity plate 1 passes through guiding mechanism 13
It is connected with rib cutting punch-pin 7, the inside of rib cutting punch-pin 7 is separately installed with monitoring device 30 and thickness adjusting apparatus 34, thickness
The bottom of regulating device 34 is uniformly provided with rib cutting cutter 33, and the side of rib cutting cavity plate 1 is fixed with support frame 16, and support frame 16 passes through
Power mechanism 26 is connected with the first transmission mechanism 25, and the first transmission mechanism 25 is connected by the second transmission mechanism 28 with rib cutting punch-pin 7
It connects, the second transmission mechanism 28 is connect by rotating mechanism 27 with support frame 16, and it is single that the side of rib cutting punch-pin 7 is separately installed with open source
The input terminal of piece machine 9 and Internet of Things device 14, open source single-chip microcontroller 9 is electrically connected with the output end of external power supply；
Rotating mechanism 27 includes connection frame 21, and connection frame 21 is fixed on the top of support frame 16, is equipped on connection frame 21
Bearing 22, the second transmission mechanism 28 are installed on bearings 22；
Power mechanism 26 includes endless screw electric motor 20, and endless screw electric motor 20 is mounted on the side of support frame 16, endless screw electric motor 20
Output shaft is connect by shaft coupling 19 with the first transmission mechanism 25, the input of the output end and endless screw electric motor 20 of single-chip microcontroller 9 of increasing income
End electrical connection；
First transmission mechanism 25 includes worm screw 18, and worm screw 18 passes through the output axis connection of shaft coupling 19 and endless screw electric motor 20,
Worm screw 18 is threaded with worm gear 17, and worm gear 17 is mounted on the second transmission mechanism 28；
Second transmission mechanism 28 includes screw rod 24, and the end of screw rod 24 is mounted on the inside of bearing 22, screw thread on screw rod 24
It is connected with transmission nut 23, rib cutting punch-pin 7 is fixed on the side of transmission nut 23, and worm gear 17 is mounted on screw rod 24；
It controls endless screw electric motor 20 by open source single-chip microcontroller 9 to work, the output shaft of endless screw electric motor 20 is driven by shaft coupling 19
Worm screw 18 rotates, and worm screw 18 connect that worm gear 17 is driven to rotate with worm gear 17, and worm gear 17 drives screw rod 24 to rotate, screw rod 24
End rotates in bearing 22, and screw rod 24 is threadedly coupled with transmission nut 23, and transmission nut 23 moves up and down on screw rod 24,
To drive rib cutting punch-pin 7 close to rib cutting cavity plate 1, process rib cutting cutter 33 to workpiece；
Guiding mechanism 13 includes the first engaging lug 2, and the first engaging lug 2 is fixed on the side of rib cutting cavity plate 1, the first engaging lug
2 top is fixed with guide rail 3, and sliding block 4 is connected on guide rail 3, and rib cutting punch-pin 7 is fixed on the side of sliding block 4, rib cutting punch-pin
7 in moving process, and band movable slider 4 is slided on guides 3, guarantees the stability that rib cutting punch-pin 7 is run；
Thickness adjusting apparatus 34 includes electric telescopic rod 32, and electric telescopic rod 32 is mounted on the inside of rib cutting punch-pin 7, electronic
The telescopic end of telescopic rod 32 is fixed with mounting base 31, and rib cutting cutter 33 is fixed on the bottom of mounting base 31, the defeated of single-chip microcontroller 9 of increasing income
Outlet is electrically connected with the input terminal of electric telescopic rod 32, is controlled electric telescopic rod 32 by open source single-chip microcontroller 9 and is worked, electric expansion
The telescopic end of bar 32 drives mounting base 31 mobile, so that position of the rib cutting cutter 33 in rib cutting punch-pin 7 be adjusted, is convenient for
The product of different-thickness is covered, ensure that the reasonability of design；
Monitoring device 30 includes supersonic detector 29 and alarm 8, and alarm 8 is mounted on the side of rib cutting punch-pin 7, and
Supersonic detector 29 is mounted on the inside of rib cutting punch-pin 7, the output end electrical connection open source single-chip microcontroller 9 of supersonic detector 29
Input terminal, the input terminal of the output end electrical connection alarm 8 of open source single-chip microcontroller 9, open source single-chip microcontroller 9 control supersonic detector 29
The wear intensity of rib cutting cutter 33 is monitored, the information of monitoring pass to open source single-chip microcontroller 9, open source single-chip microcontroller 9 to information into
Row analysis processing, when judging that its monitoring data is greater than predefined parameter, control alarm 8 is alarmed, right in time convenient for related personnel
Cutter is safeguarded, cutter is avoided not safeguarded and damaged in time, greatly reduces the cost of production；
Cleaning device 15 includes the second engaging lug 12, and the second engaging lug 12 is fixed on the side of rib cutting cavity plate 1, the second connection
The top of ear 12 is equipped with soft robot 11, and the end of soft robot 11 is equipped with dust catcher 10, the defeated of single-chip microcontroller 9 of increasing income
Outlet is electrically connected with the input terminal of soft robot 11 and dust catcher 10 respectively, and after processing is completed, open source single-chip microcontroller 9 controls software
Robot 11 works, and soft robot 11 drives dust catcher 10 mobile according to pre-set programs, thus to the working position of dust catcher 10
It sets and is adjusted, open source single-chip microcontroller 9 controls dust catcher 10 and clears up mold and cutter, and flexibility is good, mechanization degree
Height, it is time saving and energy saving, it can be avoided burr and be deposited on cutter, substantially increase cutting-tool's used life；
Internet of Things device 14 includes wireless transceiver 5, and wireless transceiver 5 is mounted on the side of rib cutting punch-pin 7, and wireless receiving and dispatching
The side of device 5 is equipped with signal amplifier 6, the input terminal of the output end electrical connection signal amplifier 6 of open source single-chip microcontroller 9, signal
The input terminal of the output end electrical connection wireless transceiver 5 of amplifier 6, the information that open source single-chip microcontroller 9 is handled pass through signal amplifier 6
The signal of amplification, amplification is emitted to remote monitoring center by wireless transceiver 5, and intelligence degree is high, easy to control, is phase
The work of pass personnel is provided convenience；
Single-chip microcontroller 9 of increasing income controls endless screw electric motor 20, electric telescopic rod 32, supersonic detector 29, alarm 8, software machine
Device people 11, dust catcher 10, wireless transceiver 5 and signal amplifier 6 are method commonly used in the prior art.
When in use：It controls electric telescopic rod 32 by open source single-chip microcontroller 9 to work, the telescopic end of electric telescopic rod 32 drives
Mounting base 31 is mobile, so that position of the rib cutting cutter 33 in rib cutting punch-pin 7 be adjusted；
It controls endless screw electric motor 20 by open source single-chip microcontroller 9 to work, the output shaft of endless screw electric motor 20 is driven by shaft coupling 19
Worm screw 18 rotates, and worm screw 18 connect that worm gear 17 is driven to rotate with worm gear 17, and worm gear 17 drives screw rod 24 to rotate, screw rod 24
End rotates in bearing 22, and screw rod 24 is threadedly coupled with transmission nut 23, and transmission nut 23 moves up and down on screw rod 24,
To drive rib cutting punch-pin 7 close to rib cutting cavity plate 1, process rib cutting cutter 33 to workpiece, rib cutting punch-pin 7 is in moving process
In, band movable slider 4 is slided on guides 3；
After processing is completed, open source single-chip microcontroller 9 controls soft robot 11 and works, and soft robot 11 is according to pre-set programs band
Dynamic dust catcher 10 is mobile, so that the operating position of dust catcher 10 be adjusted, open source single-chip microcontroller 9 controls dust catcher 10 to mold
It is cleared up with cutter；
Open source single-chip microcontroller 9 controls supersonic detector 29 and is monitored to the wear intensity of rib cutting cutter 33, the information of monitoring
Open source single-chip microcontroller 9 is passed to, open source single-chip microcontroller 9 is analyzed and processed information, is judging its monitoring data greater than predefined parameter
When, control alarm 8 is alarmed；
The information that open source single-chip microcontroller 9 is handled is amplified by signal amplifier 6, and the signal of amplification is sent out by wireless transceiver 5
It is mapped to remote monitoring center.
The utility model is adjusted position of the rib cutting cutter 33 in rib cutting punch-pin 7 by thickness adjusting apparatus 34,
It is covered convenient for the product to different-thickness, ensure that the reasonability of design, by cleaning device 15 to the burr in mold
It is cleared up, flexibility is good, and mechanization degree is high, and it is time saving and energy saving, it can be avoided burr and be deposited on cutter, substantially increase
Cutting-tool's used life is monitored by wear intensity of the monitoring device 30 to cutter, convenient for related personnel in time to cutter into
Row maintenance, avoids cutter from not safeguarded and damaged in time, greatly reduces the cost of production.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (10)
1. one kind can cover the general Rib-cutting die of different-thickness product, including rib cutting cavity plate（1）, it is characterised in that：It is described to cut
Muscle cavity plate（1）Side cleaning device is installed（15）, rib cutting cavity plate（1）Pass through guiding mechanism（13）It is convex to be connected with rib cutting
Mould（7）, the rib cutting punch-pin（7）Inside be separately installed with monitoring device（30）And thickness adjusting apparatus（34）, thickness adjusting
Device（34）Bottom be uniformly provided with rib cutting cutter（33）, the rib cutting cavity plate（1）Side be fixed with support frame（16）, support
Frame（16）Pass through power mechanism（26）It is connected with the first transmission mechanism（25）, first transmission mechanism（25）Pass through the second transmission
Mechanism（28）With rib cutting punch-pin（7）Connection, the second transmission mechanism（28）Pass through rotating mechanism（27）With support frame（16）Connection, institute
State rib cutting punch-pin（7）Side be separately installed with open source single-chip microcontroller（9）With Internet of Things device（14）, single-chip microcontroller of increasing income（9）Input
End is electrically connected with the output end of external power supply.
2. the general Rib-cutting die that one kind according to claim 1 can cover different-thickness product, it is characterised in that：It is described
Rotating mechanism（27）Including connection frame（21）, connection frame（21）It is fixed on support frame（16）Top, the connection frame（21）On
Bearing is installed（22）, the second transmission mechanism（28）It is mounted on bearing（22）On.
3. the general Rib-cutting die that one kind according to claim 1 can cover different-thickness product, it is characterised in that：It is described
Power mechanism（26）Including endless screw electric motor（20）, endless screw electric motor（20）It is mounted on support frame（16）Side, the endless screw electric motor
（20）Output shaft pass through shaft coupling（19）With the first transmission mechanism（25）Connection, the open source single-chip microcontroller（9）Output end with
Endless screw electric motor（20）Input terminal electrical connection.
4. the general Rib-cutting die that one kind according to claim 1 can cover different-thickness product, it is characterised in that：It is described
First transmission mechanism（25）Including worm screw（18）, worm screw（18）Pass through shaft coupling（19）With endless screw electric motor（20）Output shaft connect
It connects, the worm screw（18）It is threaded with worm gear（17）, worm gear（17）It is mounted on the second transmission mechanism（28）On.
5. the general Rib-cutting die that one kind according to claim 4 can cover different-thickness product, it is characterised in that：It is described
Second transmission mechanism（28）Including screw rod（24）, screw rod（24）End be mounted on bearing（22）Inside, the screw rod（24）
On be threaded with transmission nut（23）, rib cutting punch-pin（7）It is fixed on transmission nut（23）Side, the worm gear（17）Installation
In screw rod（24）On.
6. the general Rib-cutting die that one kind according to claim 1 can cover different-thickness product, it is characterised in that：It is described
Guiding mechanism（13）Including the first engaging lug（2）, the first engaging lug（2）It is fixed on rib cutting cavity plate（1）Side, it is described first connect
Lug（2）Top be fixed with guide rail（3）, guide rail（3）On be connected with sliding block（4）, the rib cutting punch-pin（7）It is fixed on cunning
Block（4）Side.
7. the general Rib-cutting die that one kind according to claim 1 can cover different-thickness product, it is characterised in that：It is described
Thickness adjusting apparatus（34）Including electric telescopic rod（32）, electric telescopic rod（32）It is mounted on rib cutting punch-pin（7）Inside, it is described
Electric telescopic rod（32）Telescopic end be fixed with mounting base（31）, rib cutting cutter（33）It is fixed on mounting base（31）Bottom, institute
State open source single-chip microcontroller（9）Output end and electric telescopic rod（32）Input terminal electrical connection.
8. the general Rib-cutting die that one kind according to claim 1 can cover different-thickness product, it is characterised in that：It is described
Monitoring device（30）Including supersonic detector（29）And alarm（8）, alarm（8）It is mounted on rib cutting punch-pin（7）Side,
And supersonic detector（29）It is mounted on rib cutting punch-pin（7）Inside, the supersonic detector（29）Output end electrical connection
Open source single-chip microcontroller（9）Input terminal, increase income single-chip microcontroller（9）Output end be electrically connected alarm（8）Input terminal.
9. the general Rib-cutting die that one kind according to claim 1 can cover different-thickness product, it is characterised in that：It is described
Cleaning device（15）Including the second engaging lug（12）, the second engaging lug（12）It is fixed on rib cutting cavity plate（1）Side, described second
Engaging lug（12）Top soft robot is installed（11）, soft robot（11）End dust catcher is installed（10）, institute
State open source single-chip microcontroller（9）Output end respectively with soft robot（11）And dust catcher（10）Input terminal electrical connection.
10. the general Rib-cutting die that one kind according to claim 1 can cover different-thickness product, it is characterised in that：Institute
State Internet of Things device（14）Including wireless transceiver（5）, wireless transceiver（5）It is mounted on rib cutting punch-pin（7）Side, and wireless receive
Send out device（5）Side signal amplifier is installed（6）, the open source single-chip microcontroller（9）Output end be electrically connected signal amplifier（6）
Input terminal, signal amplifier（6）Output end be electrically connected wireless transceiver（5）Input terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820270286.9U CN208148028U (en) | 2018-02-26 | 2018-02-26 | A kind of general Rib-cutting die covering different-thickness product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820270286.9U CN208148028U (en) | 2018-02-26 | 2018-02-26 | A kind of general Rib-cutting die covering different-thickness product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208148028U true CN208148028U (en) | 2018-11-27 |
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ID=64383509
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820270286.9U Expired - Fee Related CN208148028U (en) | 2018-02-26 | 2018-02-26 | A kind of general Rib-cutting die covering different-thickness product |
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| Country | Link |
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| CN (1) | CN208148028U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112976152A (en) * | 2021-02-02 | 2021-06-18 | 徐芝芬 | Plastic film perforating device convenient for replacing perforating needle |
-
2018
- 2018-02-26 CN CN201820270286.9U patent/CN208148028U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112976152A (en) * | 2021-02-02 | 2021-06-18 | 徐芝芬 | Plastic film perforating device convenient for replacing perforating needle |
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