CN113829041A - Screw blowing and feeding device - Google Patents
Screw blowing and feeding device Download PDFInfo
- Publication number
- CN113829041A CN113829041A CN202111198961.4A CN202111198961A CN113829041A CN 113829041 A CN113829041 A CN 113829041A CN 202111198961 A CN202111198961 A CN 202111198961A CN 113829041 A CN113829041 A CN 113829041A
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- Prior art keywords
- screw
- feeding
- assembly
- machine
- rack
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
- B23P19/002—Article feeders for assembling machines orientating the articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
- B23P19/007—Picking-up and placing mechanisms
Abstract
The invention relates to the technical field of feeding devices, in particular to a screw blowing and feeding device, which comprises: a screw machine housing; the screw machine feeding assembly is connected with the screw machine outer cover; the switching nail feeding assembly is arranged on the outer side of the output end of the screw machine feeding assembly and is connected with the outer cover of the screw machine; wherein, screw machine dustcoat includes: the feeding machine is fixedly connected with the rack through a placing bottom plate; the automatic screw feeding device has the advantages that automatic discharging is achieved, screws do not need to be grabbed by hands, the speed is high, the efficiency is high, one screw feeding device is stable in second feeding, the material is not clamped, the fault is solved in second, the efficiency is obvious, people and time are saved, the cost performance is high, and the automatic screw feeding device has the advantages of being high in stability, efficiency, intelligent degree and cost and the like.
Description
Technical Field
The invention relates to the technical field of feeding devices, in particular to a screw blowing and feeding device.
Background
At present, full-automatic screwing equipment (the full-automatic screwing equipment consists of an ST3.5X9 screw blowing and feeding device and an automatic screwing chuck component) at home and abroad is used for carrying out product assembly procedures in a mode of manually locking screws, wherein no technology for blowing the screws into automatic screwing machine chucks is adopted for ST3.5X9 screws temporarily.
The mode efficiency of manual locking and paying the screw is lower, and the cost of labor is high, can have the condition such as screw float lock, smooth tooth to exist. The quality of the manual locking screw has deviation and errors according to the proficiency of an operator, products with floating locking and sliding teeth of the screw cannot be automatically eliminated, and the risk of flowing of NG products exists, so that the screw blowing and feeding device is urgently needed to be developed aiming at the current situation so as to overcome the defects in the current practical application.
Disclosure of Invention
The present invention is directed to a screw blowing and feeding device to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a screw blowing and feeding device comprising:
a screw machine housing;
the screw machine feeding assembly is connected with the screw machine outer cover and is used for being matched with the screw machine outer cover to realize linear conveying of screws;
the switching screw feeding assembly is arranged on the outer side of the output end of the screw machine feeding assembly, is connected with the outer cover of the screw machine and is used for matching with the screw machine feeding assembly to finish automatic feeding of screws;
wherein, screw machine dustcoat includes:
the screw feeding device comprises a rack and a feeding machine, wherein the feeding machine is fixedly connected with the rack through a placing bottom plate and is used for conveying screws into a feeding assembly of a screw machine;
and the control driving assembly is connected with the rack, is connected with the screw machine feeding assembly and the switching screw conveying assembly and is used for driving the screw machine feeding assembly and the switching screw conveying assembly to realize continuous screw discharging.
Compared with the prior art, the invention has the beneficial effects that:
when the device is in operation, the PLC and the induction sensors at all positions in the conveying link of the feeding machine are adopted to respond, the problem points in the screw feeding process are fed back in real time, and screws are separated from single parts of the storage bin and are blown into the automatic screw driving chuck assembly after being processed by the screw feeding assembly and the switching screw feeding assembly, so that the automatic screw feeding is completed. Compared with the prior art, realized automatic discharging, need not to snatch the screw with the hand, it is fast, efficient, the second send a screw equipment stable, do not block the material, the trouble is solved second, and efficiency is obvious, economizes the people and save time, the sexual valence relative altitude, have advantages such as high stability, high efficiency, intelligent degree height, low cost.
Drawings
Fig. 1 is a schematic structural view of a screw blowing and feeding device.
Fig. 2 is a plan view of the screw blowing and feeding device.
Fig. 3 is a top view of the internal structure of the screw blowing and feeding device.
Fig. 4 is a front view of the screw blowing and feeding device.
Fig. 5 is a schematic structural view of a screw feeding assembly in the screw blowing and feeding device.
FIG. 6 is a top view of the switching nail feeding assembly in the screw feeding device.
Fig. 7 is a side view of the switching nail feeding unit in the screw blowing and feeding device.
In the figure: 1-screw machine housing, 2-screw machine feeding component, 3-switching screw feeding component, 4-alarm display panel, 5-air inlet blowing component, 6-air inlet, 7-screw outlet, 8-screw switching component, 9-linear vibration screw feeding component, 10-screw inlet, 11-power connector, 12-signal transmission component, 13-pneumatic control box, 14-control mainboard, 15-annular material sensor, 16-voltage reduction power supply, 17-electric screw driver adapter, 18-main pneumatic pressure regulator, 19-feeding machine, 20-placing bottom plate, 21-screw inlet notch, 22-screw pressing sheet, 23-in-place notch, 24-stroke guide plate, 25-screw pulling sheet, 26-screw blowing inlet, 27-translation of the slipway cylinder.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Referring to fig. 1, in an embodiment of the present invention, a screw blowing and feeding device includes: a screw machine housing 1; the screw machine feeding assembly 2 is connected with the screw machine outer cover 1 and is used for being matched with the screw machine outer cover 1 to realize linear conveying of screws; the screw switching and feeding assembly 3 is arranged on the outer side of the output end of the screw machine feeding assembly 2, is connected with the screw machine outer cover 1 and is used for matching with the screw machine feeding assembly 2 to complete automatic feeding of screws; wherein, screw machine dustcoat 1 includes: the screw feeding device comprises a frame and a feeding machine 19, wherein the feeding machine 19 is fixedly connected with the frame through a placing bottom plate 20 and is used for conveying screws into a screw feeding assembly 2; and the control driving assembly is connected with the rack, is connected with the screw machine feeding assembly 2 and the switching screw conveying assembly 3 and is used for driving the screw machine feeding assembly 2 and the switching screw conveying assembly 3 to realize continuous discharging of screws.
In the embodiment, when the device is in operation, the PLC and the induction sensors at the positions in the conveying link of the feeding machine are adopted to respond, the problem points in the screw feeding process are fed back in real time, and screws are separated from single parts of the storage bin and are blown into the automatic screwing chuck assembly after being processed by the screw feeding assembly 2 and the switching screw feeding assembly 3, so that the automatic screw feeding is completed. Compared with the prior art, realized automatic discharging, need not to snatch the screw with the hand, fast, efficient, it is stable to send a screw equipment 1 second, does not block the material, and the trouble second is solved, and efficiency is obvious, economizes the people and save time, and the sexual valence relative altitude has advantages such as high stability, high efficiency, intelligent degree height, low cost.
In one embodiment of the present invention, referring to fig. 2-4, the feeder 19 includes: the shell is fixedly connected with the placing bottom plate 20, and a screw feeding hole 10 is formed in the shell; the rotary feeding motor is arranged on the inner side of the shell; and the feeding barrel is connected with the rotary feeding motor and is used for matching with the rotary feeding motor to convey screws into the screw machine feeding assembly 2.
In this embodiment, the feeding machine 19 is arranged, the feeding motor is rotated to work, and the feeding barrel feeds the screws entering from the screw feeding port 10 into the screw feeding assembly 2, wherein the brush arranged inside the feeding machine 19 can brush the screws which are not correctly placed back into the feeding barrel, and the screws which are correctly placed still vibrate directly to complete the action.
In one embodiment of the present invention, the control drive assembly comprises: the control main board 14 is fixedly connected to the inner side of the rack and connected with the signal conveying piece 12 arranged on the rack; the power supply connector 11 is used for supplying power to the device, and the power supply connector 11 is fixedly connected with the rack; and the pneumatic control box 13 is arranged on the inner side of the frame, the input end of the pneumatic control box 13 is connected with the air inlet 6, and the output end of the pneumatic control box 13 is connected with the switching nail feeding assembly 3 and used for conveying air to realize the discharge of screws.
In the embodiment, the electric control and driving elements are reasonably arranged to achieve the function, and simultaneously, the integral small size, attractive appearance and maintenance convenience of the equipment are met, wherein the pneumatic control box 13 is composed of a Sudoku solenoid valve component, a triple single-control solenoid valve controls all pneumatic execution of the screw blowing and feeding device, the elements complete actions, a small silencer is arranged to complete pneumatic control and reduce noise in the environment, in addition, a power supply connector 11 is used for completing input equipment of an AC220V alternating current power supply, a socket loaded with IEC60320 electrical standard is arranged, a fuse is arranged in the socket, when a circuit fails, the fuse fuses to cut off current, so that the circuit is protected, a signal transmission piece 12 is used for completing mutual quick plug connection of PLC signals and sensors in the screw machine to improve convenience, and the screw blowing and feeding device can move to any required position, the conveying control main board 14 is used for receiving and processing input and output signals of the screw blowing and feeding device, the pneumatic control box 13 is further connected with a main air pressure adjusting piece 18 arranged on the rack, the main air pressure adjusting piece 18 is used for inputting main air pressure of the screw blowing and feeding device, and the hand valve controls the on-off of air;
in addition, a voltage reduction power supply 16 is arranged in the control driving assembly and used for converting an input 220V voltage into a 24V voltage to supply power for a screw machine motor, and an electric screw driver adapter 17 is arranged and used for receiving signals of the handheld electric screwdriver device.
In one embodiment of the invention, the screw feeder further comprises an alarm assembly, wherein the alarm assembly is arranged outside the frame, is connected with the screw feeder feeding assembly 2 and the switching screw feeding assembly 3, and is used for detecting the screw conveying amount and maintaining the continuous feeding of the device.
In this embodiment, the warning subassembly is warning display panel 4, warning display panel 4 fixed connection locates 1 outside of frame, through setting up the warning subassembly, can display equipment alarm information to do and blow the screw count on the same day, alarm information gathers, and the control screw blows feedway and starts and the action that resets.
In an embodiment of the present invention, referring to fig. 5, the screw machine feeding assembly 2 includes: the linear vibration nail feeding assembly 9 is fixedly connected to the shell, one end of the linear vibration nail feeding assembly 9 is connected with the feeding machine 19, and the other end of the linear vibration nail feeding assembly 9 is connected with the switching nail feeding assembly 3; the pressing plate is arranged on the outer side of the linear vibration screw feeding assembly 9, connected with the rack and used for matching with the linear vibration screw feeding assembly 9 to realize stable screw conveying; and the correlation sensor is arranged outside the linear vibration nail feeding assembly 9, is connected with the control driving assembly and is used for detecting the number of the screws on the linear vibration nail feeding assembly 9.
In this embodiment, the screw passes through feeder 19 material loading, reach on the straight vibration of line send the nail subassembly 9, guarantee the screw at transportation process by the straight vibration of line send the nail subassembly 9 and clamp plate cooperation, screw spiral head part can not the perk, overlap with other screw nuts, or the screw is not perpendicular with straight vibration send the nail subassembly 9 notch sheet metal, influence and send nail stability, correlation sensor response screw to the material condition when screw transport straight vibration send the nail subassembly 9 is terminal, the screw blows the feedway and judges that there is the material in the feeder after the correlation sensor senses the material, the signal feeds back to PLC and prepares next mechanism execution action, if the correlation sensor does not sense the material, the screw blows feedway and begins to report to the police, notify personnel's feed supplement.
In an embodiment of the present invention, referring to fig. 6 and 7, the switching nail feeding assembly 3 includes: the screw switching component 8 is connected with the rack, is connected with the output end of the linear vibration screw feeding component 9 and is used for realizing continuous output of screws; the screw blowing air inlet 26 is arranged on the outer side of the output end of the screw switching assembly 8, is connected with the control driving assembly and is used for blowing a screw to the automatic screw driving chuck assembly in cooperation with the control driving assembly; an annular material-to-material sensor 15, the annular material-to-material sensor 15 being provided outside the blow pin air inlet 26 for detecting a screw position, wherein the screw switching assembly 8 includes: the support table is arranged on the rack, a screw feeding notch 21 and a position-in notch 23 are formed in the support table, and the screw feeding notch 21 is connected with the output end of the linear vibration screw feeding assembly 9; the screw shifting piece 25 is arranged in the screw inlet notch 21 and used for clamping a screw entering the screw inlet notch 21; the translation sliding table air cylinder 27 is arranged between the support table and the rack and used for driving the support table to move so as to realize the separation of the screw shifting piece 25 and the screw; and the stroke guide plate 24 is fixedly connected with the rack, is in sliding connection with the screw shifting piece 25 and is used for guiding the movement of the screw shifting piece 25.
In this embodiment, the switching nail feeding assembly 3 has a main function of separating and blowing a single screw, the supplied screw is conveyed through the linear vibration nail feeding assembly 9 in the feeder 19, the U-shaped notch in the screw shifting piece 25 blocks and clamps, when the screw shifting piece 25 is located at the screw inlet notch 21, the U-shaped notch in the screw shifting piece 25 is tangent to the screw thread line to clamp the screw, and a translational motion is performed, the translational motion mainly uses the translational sliding table cylinder 27 as power, while the screw shifting piece 25 clamps the screw in the translational motion, the cylindrical positioning pin on the screw shifting piece 25 is tangent to the guide groove in the stroke guide plate 24, the screw shifting piece 25 retreats in the Y-axis direction, after the translational sliding table cylinder 27 translates to the extreme position, the screw reaches the position of the notch 23, the U-shaped notch in the screw shifting piece 25 is completely separated from the screw, and after the U-shaped notch in the screw shifting piece 25 is completely separated from the screw, the screw descends because of self gravity immediately, through annular to material sensor 15, under the circumstances that material sensor 15 sensed the material is arrived to the annular, blow the air inlet 26 of nailing and admit air, blow away the screw, then translation slip table cylinder 27 carries out the translation action, screw plectrum 25 returns into screw notch 21, repeated initial action, wherein, there are 3 groups of sensors in the switching nail feeding subassembly 3, be slip table cylinder magnetic switch inductor, magnetic switch inductor and annular to material sensor 15 respectively, the position of screw in screw blowing feeding device can accurate judgement screw, realize real time monitoring, can be accurate when the device trouble find out the problem point, in addition, screw pressing thin slice 22 is provided with in the screw plectrum 25 outside for guarantee the stability of screw when removing.
In one embodiment of the invention, a screw discharge port connected with the switching screw feeding assembly 3 is arranged outside the machine frame and used for conveying screws into the automatic screwing chuck assembly.
In this embodiment, screw discharge gate 7 realizes that the inside screw of screw blowing feedway goes out the tracheal connection of screw section and automaton chuck subassembly section with the wear plate joint of alder, has increased the convenience when the screw blows feedway shift position and need change the trachea.
This feeding device is blown to screw has realized automatic discharge, need not to snatch the screw with the hand, and is fast, efficient, and it is stable to send a screw equipment 1 second, does not block the material, and the trouble is solved second, and efficiency is obvious, economizes the people and save time, and the sexual valence relative altitude has advantages such as high stability, high efficiency, intelligent degree height, low cost.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (7)
1. Screw blows feedway, its characterized in that includes:
a screw machine housing;
the screw machine feeding assembly is connected with the screw machine outer cover and is used for being matched with the screw machine outer cover to realize linear conveying of screws;
the switching screw feeding assembly is arranged on the outer side of the output end of the screw machine feeding assembly, is connected with the outer cover of the screw machine and is used for matching with the screw machine feeding assembly to finish automatic feeding of screws;
wherein, screw machine dustcoat includes:
the screw feeding device comprises a rack and a feeding machine, wherein the feeding machine is fixedly connected with the rack through a placing bottom plate and is used for conveying screws into a feeding assembly of a screw machine;
and the control driving assembly is connected with the rack, is connected with the screw machine feeding assembly and the switching screw conveying assembly and is used for driving the screw machine feeding assembly and the switching screw conveying assembly to realize continuous screw discharging.
2. A screw blowing feeder according to claim 1, characterised in that the feeder comprises:
the shell is fixedly connected with the placing bottom plate, and a screw feeding hole is formed in the shell;
the rotary feeding motor is arranged on the inner side of the shell;
and the feeding barrel is connected with the rotary feeding motor and is used for matching with the rotary feeding motor to convey screws to enter the screw machine feeding assembly.
3. A screw blowing feeder according to claim 2, characterised in that the control drive assembly comprises:
the control main board is fixedly connected with the inner side of the rack and is connected with the signal conveying piece arranged on the rack;
the power connector is used for supplying power to the device and is fixedly connected with the rack;
the pneumatic control box is arranged on the inner side of the rack, the input end of the pneumatic control box is connected with the air inlet, and the output end of the pneumatic control box is connected with the switching nail feeding assembly and used for conveying air to realize screw discharging.
4. A screw blowing feeder according to claim 3, further comprising:
the alarm assembly is arranged on the outer side of the rack, is connected with the screw machine feeding assembly and the switching screw feeding assembly, and is used for detecting the screw conveying amount and maintaining the continuous feeding of the device.
5. A screw blow feeder as in claim 4, wherein the screw machine feeder assembly comprises:
the linear vibration nail feeding assembly is fixedly connected to the shell, one end of the linear vibration nail feeding assembly is connected with the feeding machine, and the other end of the linear vibration nail feeding assembly is connected with the switching nail feeding assembly;
the pressing plate is arranged on the outer side of the linear vibration screw feeding assembly, is connected with the rack and is used for matching with the linear vibration screw feeding assembly to realize stable screw conveying;
and the correlation sensor is arranged on the outer side of the linear vibration nail feeding assembly, is connected with the control driving assembly and is used for detecting the number of screws on the linear vibration nail feeding assembly.
6. The screw blowing feeder of claim 5, wherein the switching feeder assembly comprises:
the screw switching assembly is connected with the rack, is connected with the output end of the linear vibration screw feeding assembly and is used for realizing the continuous output of screws;
the screw blowing air inlet is arranged on the outer side of the output end of the screw switching assembly, is connected with the control driving assembly and is used for blowing a screw to the automatic screw driving chuck assembly in cooperation with the control driving assembly;
the annular material arrival sensor is arranged on the outer side of the air inlet of the blow pin and used for detecting the position of the screw.
7. A screw blowing feeder according to claim 6, wherein the screw switching unit includes:
the support table is arranged on the rack, a screw feeding notch and a position-in notch are formed in the support table, and the screw feeding notch is connected with the output end of the linear vibration screw feeding assembly;
the screw shifting piece is arranged in the screw inlet notch and used for clamping a screw entering the screw inlet notch;
the translation sliding table cylinder is arranged between the support table and the rack and used for driving the support table to move so as to realize the separation of the screw shifting piece and the screw;
and the stroke guide plate is fixedly connected with the rack, is in sliding connection with the screw shifting piece and is used for guiding the movement of the screw shifting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111198961.4A CN113829041A (en) | 2021-10-14 | 2021-10-14 | Screw blowing and feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111198961.4A CN113829041A (en) | 2021-10-14 | 2021-10-14 | Screw blowing and feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113829041A true CN113829041A (en) | 2021-12-24 |
Family
ID=78968920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111198961.4A Pending CN113829041A (en) | 2021-10-14 | 2021-10-14 | Screw blowing and feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113829041A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203865496U (en) * | 2014-04-15 | 2014-10-08 | 东莞市鑫铭机电仪器有限公司 | Automatic machine feeding materials in columns |
| CN210451639U (en) * | 2019-06-13 | 2020-05-05 | 深圳市鸿锐达科技有限公司 | Screw feeding equipment for air blowing type automatic screw locking machine |
| CN210649405U (en) * | 2019-08-19 | 2020-06-02 | 浙江智源办公设备制造股份有限公司 | Automatic screw locking machine |
| CN211867018U (en) * | 2019-12-24 | 2020-11-06 | 东莞市诚科电子科技有限公司 | Handheld blowing and feeding screw machine |
| CN112536596A (en) * | 2020-12-07 | 2021-03-23 | 深圳市森阳智能制造装备有限公司 | Screw vibration feeding device |
-
2021
- 2021-10-14 CN CN202111198961.4A patent/CN113829041A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203865496U (en) * | 2014-04-15 | 2014-10-08 | 东莞市鑫铭机电仪器有限公司 | Automatic machine feeding materials in columns |
| CN210451639U (en) * | 2019-06-13 | 2020-05-05 | 深圳市鸿锐达科技有限公司 | Screw feeding equipment for air blowing type automatic screw locking machine |
| CN210649405U (en) * | 2019-08-19 | 2020-06-02 | 浙江智源办公设备制造股份有限公司 | Automatic screw locking machine |
| CN211867018U (en) * | 2019-12-24 | 2020-11-06 | 东莞市诚科电子科技有限公司 | Handheld blowing and feeding screw machine |
| CN112536596A (en) * | 2020-12-07 | 2021-03-23 | 深圳市森阳智能制造装备有限公司 | Screw vibration feeding device |
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Application publication date: 20211224 |