CN207861295U - Vibration feeding device and feeding plate rail - Google Patents
Vibration feeding device and feeding plate rail Download PDFInfo
- Publication number
- CN207861295U CN207861295U CN201721109759.9U CN201721109759U CN207861295U CN 207861295 U CN207861295 U CN 207861295U CN 201721109759 U CN201721109759 U CN 201721109759U CN 207861295 U CN207861295 U CN 207861295U
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- CN
- China
- Prior art keywords
- feeding
- plate rail
- guide portion
- feeding plate
- passing passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model is related to a kind of vibration feeding device and feeding plate rails, the feeding plate rail includes pedestal, protrude the second guide portion for being provided with the first guide portion and being connect with the first guide portion in the upper surface of pedestal, first guide portion and the second guide portion define the material passing passage to form opening backwards to upper surface, and first guide portion and the second guide portion respectively include the first passage wall for intersecting and defining material passing passage and second channel wall, material passing passage includes the feeding end and discharge end being oppositely arranged, first passage wall is to be overlapped with upper surface by opposing upper angled transition along the direction of feeding end to discharge end, second channel wall is to be mutually perpendicular to upper surface by opposing upper angled transition along the direction of feeding end to discharge end.First passage wall and second channel wall are tilted in feeding end in above-mentioned feeding plate rail is crossed to form the space for accepting material, convenient for along inclined direction receiving the material from disk, reduces the case where Material card is between disk and feeding plate rail, feeding effect is more stable.
Description
Technical field
The utility model is related to LED material feeding technical fields, more particularly to vibration feeding device and feeding plate rail.
Background technology
LED chip mounter is to produce the capital equipment of LED.Current LED chip mounter includes mainly feeding device, lamp panel device
With paster apparatus three parts.When work, paster apparatus captures LED materials from drawing-in device, the LED materials that then will be grabbed
Expect that the lamp plate being positioned in lamp panel device carries out attachment operation, to complete the patch process of LED.
The feeding device of chip mounter is shaken by disk, feeding plate rail, aluminium seat, circle, flat to shake, and vibrating disk control, optical fiber, optical fiber is put
Big device etc. is combined into.It is the vibration feeding that disk is shaken by circle, disk is during feeding by disk when feeding device works
Optical fiber above is screened, is then delivered on feeding plate rail to the directions of LED materials, the direction of light-emitting surface, and feeding plate rail is logical
It crosses the flat vibration shaken and LED materials is sent to front end, then for the feeding structure feeding of board.The precision of the feeding of disk and
The speed of feeding be it is direct determine board can normal operation and board can high speed operation key, feeding plate rail sets
Meter quality is also to directly influence the key of machine operation, and can it be to influence board work normally that whether the feeding of feeding plate rail gets stuck
Major reason.Although traditional LED chip mounter can complete the patch process of LED, some materials in feeding process
It is easy to be stuck in the feeding end of feeding plate rail, feeding effect is not sufficiently stable.
Utility model content
Based on this, it is necessary to which the problem of being not sufficiently stable for traditional feeding plate rail feeding effect provides a kind of feeding effect
The more stable feeding plate rail of fruit.
It there is a need to and a kind of oscillation feed gear with the feeding plate rail is provided.
A kind of feeding plate rail, including pedestal, the upper surface protrusion of the pedestal are provided with the first guide portion and with described the
Second guide portion of one guide portion connection, first guide portion and second guide portion define to form opening on described
The material passing passage on surface, and to respectively include intersecting and define the punishment in advance logical for first guide portion and second guide portion
The first passage wall and second channel wall in road, the material passing passage include the feeding end and discharge end being oppositely arranged, and described first
Conduit wall along the feeding end to the direction of the discharge end by the relatively described upper surface angled transition be and the upper surface weight
Close, the second channel wall along the feeding end to the direction of the discharge end by the relatively described upper surface angled transition for institute
Upper surface is stated to be mutually perpendicular to.
The first guide portion and the second guide portion of the upper surface protrusion setting of pedestal in above-mentioned feeding plate rail define jointly
Material passing passage is formed, can so be moved on feeding plate rail by guiding material by punishment in advance, and in the first guide portion
Second channel wall on first passage wall and the second guide portion defines material passing passage, and first passage wall and second channel wall are in pan feeding
Equal opposing upper is held to tilt and intersect, such first passage wall and second channel wall are crossed to form undertaking material in feeding end inclination
The space of material receives material inclined direction convenient for along inclined direction receiving the material from disk compared to direct horizontal direction
The transition that material is more conducive to material is received, reduces the case where Material card is between disk and feeding plate rail, feeding effect is more steady
It is fixed.Also, when material is moved to discharge end in material passing passage along first passage wall, pass through overlapped with upper surface of gradual change
One conduit wall exports in the horizontal direction, be convenient for follow-up paster apparatus absorption, and second channel wall discharge end fade to
Upper surface is vertical, for being limited to material, material is smoothly sent to discharge end, so passes through the first passage wall of gradual change and the
Two conduit walls along inclined direction smoothly accept the material sent of disk in feeding end, also can in discharge end horizontal output material,
Convenient follow-up absorption, takes into account the convenience of the stationarity and following process of material conveying.
Further include cover board in one of the embodiments, the cover board is set on the pedestal and is covered on the punishment in advance
The opening in channel.
Further include the blowback air channel being opened in close to the feeding end in the cover board in one of the embodiments,
The direction that the feeding end is directed toward in the blowback air channel along the discharge end be obliquely installed close to the material passing passage and with institute
State material passing passage connection.
Further include sorting optical fiber in one of the embodiments, the sorting light of the sorting optical fiber can be transferred to described
The feeding end of material passing passage, for detecting the polar orientation for being moved to feeding end material.
Further include the charging air blowing component close to feeding end setting in one of the embodiments, the charging is blown
Pneumatic module blows material bar including the first fixed seat, forward direction and laterally blows material bar, and the forward direction blows material bar and is set to first fixation
The side of seat and tilt down setting along the direction of the feeding end to the discharge end, it is described lateral to blow described in material bar is set to
The other side of first fixed seat and setting is tilted down along the direction of the vertical feeding end to the direction of discharge, and described
Forward direction blows material bar and the lateral material bar that blows is connected to the material passing passage.
In one of the embodiments, further include be located at the feeding mouth at full material to penetrating optical fiber, the full material is to penetrating
Optical fiber includes the transmitting terminal and receiving terminal for being respectively arranged on the material passing passage opposite sides, and the transmitting terminal is for sending out by institute
The light of material passing passage is stated, the receiving terminal is for receiving the light that the transmitting terminal is sent out.
Further include the discharging air blowing component close to discharge end setting in one of the embodiments, the discharging is blown
Pneumatic module includes the second fixed seat and discharging inflatable bar, the discharging inflatable bar in second fixed seat and along it is described enter
The direction of material end to the discharge end tilts down setting, and is connected to the material passing passage.
Further include the discharge baffle being set to close to the discharge end on the pedestal in one of the embodiments, it is described
Offered in discharge baffle opening with it is described go out the opposite holding tank of material passing passage；And/or
The feeding plate rail further includes optical fiber in place, the relatively described discharge baffle setting of the optical fiber in place, and described is arrived
The light in place of position optical fiber can be transferred in the holding tank.
Further include the vacuum slot set on the pedestal bottom end, the vacuum slot and institute in one of the embodiments,
The discharge end for stating material passing passage communicates, and generates the suction for adsorbing discharge end material bottom.
A kind of vibration feeding device, including above-mentioned feeding plate rail, it is flat shake, disk and circle shake, the feeding plate rail is set to
It is described it is flat shake on, on the disk shakes set on the circle, and the feeding plate rail is docked with the disk.
Description of the drawings
Fig. 1 is the structural schematic diagram of vibration feeding device in one embodiment of the utility model；
Fig. 2 is the structural schematic diagram of feeding plate rail in one embodiment of the utility model；
Fig. 3 is the structural schematic diagram of pedestal in feeding plate rail shown in Fig. 2；
Fig. 4 is the structural schematic diagram of the first cover board in feeding plate rail shown in Fig. 2.
Specific implementation mode
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can in many different forms come in fact
It is existing, however it is not limited to embodiment described herein.Make public affairs to the utility model on the contrary, purpose of providing these embodiments is
The understanding for opening content is more thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with the technology for belonging to the utility model
The normally understood meaning of technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more relevant Listed Items.
As shown in Figure 1, the vibration feeding device 200 in one embodiment of the utility model includes feeding plate rail 100, puts down and shake
210, disk 230 and circle shake 250, and disk 230 is set to circle and shakes on 250, drive disk 230 to vibrate by shake 250 vibration of circle,
And then drive circle to shake the material movement on 250, feeding plate rail 100 be set to it is flat shake on 210, sent by the flat 210 vibration drive of shaking
Expect that plate rail 100 vibrates, and feeding plate rail 100 is docked with disk 230, feeding plate rail 100 receives the material on disk 230, and
Material is sent to the one end of feeding plate rail 100 far from disk 230, the feeding process of material is completed.Specifically, vibration feeding device
It can be applied in the equipment such as chip mounter, light splitting machine.
As Figure 2-3, the feeding plate rail 100 in one embodiment of the utility model includes pedestal 10, the upper table of pedestal 10
The second guide portion 14 for being provided with the first guide portion 12 and being connect with the first guide portion 12 is protruded in face 11, the first guide portion 12 and the
Two guide portions 14 define the material passing passage 13 to form opening backwards to upper surface 11, the first guide portion 12 and the second guide portion 14 difference
First passage wall 121 and second channel wall 141 including intersecting and defining material passing passage 13, material passing passage 13 include being oppositely arranged
Feeding end 132 and discharge end 134, first passage wall 121 is along feeding end 132 to the direction of discharge end 134 by opposing upper
11 angled transitions are to be overlapped with upper surface 11, and second channel wall 141 is along feeding end 132 to the direction of discharge end 134 by relatively
11 angled transition of surface is to be mutually perpendicular to upper surface 11.
The first guide portion 12 and second guiding of the protrusion setting of upper surface 11 of pedestal 10 in above-mentioned feeding plate rail 100
Portion 14 defines to form material passing passage 13 jointly, can so be moved on feeding plate rail 100 by 13 guiding materials by punishment in advance,
And the second channel wall 141 on the first passage wall 121 and the second guide portion 14 in the first guide portion 12 defines material passing passage
13, first passage wall 121 and second channel wall 141 tilt and intersect, such first passage wall in the equal opposing upper of feeding end
121 and second channel wall 141 feeding end 132 tilt be crossed to form accept material space, convenient for along inclined direction receive come
From the material of disk, receives material inclined direction compared to direct horizontal direction and receive the transition that material is more conducive to material, reduce
The case where Material card is between disk 230 and feeding plate rail 100, feeding effect is more stable.
Also, when material is moved to discharge end 134 in material passing passage along first passage wall 121, by gradual change with it is upper
The first passage wall 121 that surface 11 overlaps exports in the horizontal direction, is convenient for the absorption of follow-up paster apparatus, and second channel wall
141 faded in discharge end it is vertical with upper surface 11, for material limit, material is smoothly sent to discharge end 134, so
By the first passage wall 121 and second channel wall 141 of gradual change disk 230 is along inclined direction smoothly accepted in feeding end 132
The material sent, also can be in 134 horizontal output material of discharge end, and convenient follow-up absorption takes into account the stationarity of material conveying with after
The convenience of continuous processing.
In one embodiment, feeding plate rail 100 further includes cover board 30, and cover board 30 is set on pedestal 10 and is covered on punishment in advance
The opening in channel 13 so further defines material passing passage 13 by cover board 30, further limits material along material passing passage 13
Mobile road strength, ensures the steady transmission of material.
Specifically, cover board 30 includes the first cover board 32 and the second cover board 34 of docking.It is to be appreciated that in some other reality
It applies in example, cover board 30 can also be integrally formed, and not limited herein.
In one embodiment, feeding plate rail 100 further includes sorting optical fiber 40, and the sorting light of sorting optical fiber 40 can transmit
To the feeding end 132 of material passing passage 13, for detecting the polar orientation for being moved to 132 material of feeding end, and by testing result
Controller is passed to, then controller can control grabbing device and undesirable material is removed feeding plate rail 100, to circle
Clean material is not screened in disk feeding process and carries out postsearch screening.
In one embodiment, feeding plate rail 100 further includes being located at full material at feeding end 132 to penetrating optical fiber 50, full to expect
Include the transmitting terminal 52 and receiving terminal 54 for being respectively arranged on 13 opposite sides of material passing passage to penetrating optical fiber 50, transmitting terminal 52 is for sending out
By the light of material passing passage 13, receiving terminal 54 is for receiving the light that transmitting terminal 52 is sent out, so by full material to penetrating optical fiber
50 detect the quantity of the material by feeding end 132, and can be detected according to full material to penetrating optical fiber 50 with controller
The quantity of material control the feeding speed of disk, preventing disk, feeding leads to docking for disk and feeding plate rail 100 always
It is fallen after place's material accumulation is excessive.
Specifically, full material contraposition optical fiber 50 is set to close to the second cover board 30 on pedestal 10, and the second cover board 30 and pedestal 10
On offer the light hole communicated with material passing passage 13 along the light path of transmitting terminal 52, be thusly-formed complete light path, to pass through
The quantity of material is detected in material passing passage 13 on feeding plate rail 100, and avoidable light exposes to reflective on the first cover board 20.
As shown in Figure 2,4, in one embodiment, feeding plate rail 100 further includes being opened in cover board 30 close to feeding end 132
Interior blowback air channel 321, the direction that feeding end 132 is directed toward in blowback air channel 321 along discharge end 134 are inclined close to material passing passage 13
Tiltedly it is arranged and is connected to material passing passage 13, so by blowback air channel 321 along discharge end 134 to the inclination side of feeding end 132
It blows upwards, can be reversed the material for blowing away and being stuck at feeding end 132.Specifically, it is provided on the first cover board 20 and blowback air
The suction nozzle 22 that channel 321 is connected to is equipped between suction nozzle 22 and blowback air channel 321 and is connected to suction nozzle 22 and blowback air channel
321 vertical passageway is so ventilated by suction nozzle 22 to blowback air channel 321.
In one embodiment, feeding plate rail 100 further includes the charging air blowing component 60 being arranged close to feeding end 132, into
Material air blowing component 60 include the first fixed seat 61, forward direction blow material bar 63 and it is lateral blow material bar 65, forward direction blows material bar 63 and is set to the
The side of one fixed seat 61 and setting is tilted down along the direction of feeding end 132 to discharge end 134, laterally blows material bar 65 and be set to the
The other side of one fixed seat 61 and setting is tilted down along the direction in vertical feeding end 132 to 134 direction of discharge end, and forward direction is blown
Material bar 63 and the lateral material bar 65 that blows are connected to material passing passage 13, and such forward direction blows the air-flow of the material blowout of bar 65 along feeding end 132
The material in material passing passage 13 is blown to the direction of discharge end 134, accelerates the gait of march of material, laterally blows what material bar 65 was blown out
The air-flow that air-flow tilts down blowout along the direction in vertical feeding end 132 to 134 direction of discharge end blows and is stuck at feeding end 132
Material, ensure material can be moved along guide rail 11 under the action of flat vibrational.
Specifically, certain airspace is reserved between the first cover board 32 and the second cover board 34, forward direction is blown material bar 63 and blown
The gas gone out is blown into the movement speed for accelerating material in material passing passage 13 by gap, laterally blows material bar 65 and is set to feeding end 132
Top, material in material passing passage 13 can be blown to from the opening on V-type top by so laterally blowing the gas that material bar 65 is blown out.
In one embodiment, feeding plate rail 100 further includes the discharging air blowing component 70 being arranged close to discharge end 134, is gone out
Expect that air blowing component 70 includes the second fixed seat 72 and discharging inflatable bar 74, discharging inflatable bar 74 be set in the second fixed seat 72 and
Setting is tilted down along the direction of feeding end 132 to discharge end 134, and is connected to material passing passage 13, the outlet that discharges so is passed through
Component 70 detaches each material at discharge end 134, is drawn convenient for follow-up.
In one embodiment, feeding plate rail 100 further includes the discharge baffle being set to close to discharge end 134 on pedestal 10
80, the opening holding tank 81 opposite with tapping channel 11, the material so removed from material passing passage 13 are offered in discharge baffle 80
Material can be moved to holding tank 81 by opening, and holding tank 81 can limit material and continue to move to, and the shape and material of holding tank 81
The shape of material matches, and is convenient for and material mating.
Further, feeding plate rail 100 further includes optical fiber 90 in place, and optical fiber 90 is arranged with respect to discharge baffle 80 in place, and
The light in place that optical fiber 90 is sent out in place can be transferred in holding tank 81, can so detect the material being moved in holding tank 81
Material is convenient for subsequent processing.
In one embodiment, feeding plate rail 100 further includes the vacuum slot 92 set on 10 bottom end of pedestal, vacuum slot 92
It is communicated with the discharge end 134 of material passing passage 13, and generates the suction of 134 material bottom of absorption discharge end, it as follows can be to reaching
Material at discharge end 134 applies certain suction, prevents material from continuing to move to.
Specifically, the gas circuit of connection material passing passage 13 and vacuum slot 92, and gas circuit gas outlet are offered on pedestal 10
A diameter of 1MM.The quantity of vacuum slot 92 is four, one of them inhales vacuum slot 921 for side, and it is inclined that vacuum slot 921 is inhaled in side
It is arranged from material passing passage 13, prevents vacuum hole plug.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of feeding plate rail, which is characterized in that including pedestal, the upper surface of pedestal protrusion be provided with the first guide portion and
The second guide portion being connect with first guide portion, first guide portion and second guide portion define to form the opening back of the body
To the material passing passage of the upper surface, and first guide portion and second guide portion respectively include intersecting and defining it is described
The first passage wall and second channel wall of material passing passage, the material passing passage include the feeding end and discharge end being oppositely arranged, institute
State first passage wall along the feeding end to the direction of the discharge end by the relatively described upper surface angled transition be with it is described on
Surface overlaps, and the second channel wall is along the feeding end to the direction of the discharge end by the relatively described upper surface angled transition
To be mutually perpendicular to the upper surface.
2. feeding plate rail according to claim 1, which is characterized in that further include cover board, the cover board is set to the pedestal
The opening that is upper and being covered on the material passing passage.
3. feeding plate rail according to claim 2, which is characterized in that further include being opened in the lid close to the feeding end
Blowback air channel in plate, the direction that the feeding end is directed toward in the blowback air channel along the discharge end are logical close to the punishment in advance
Road is obliquely installed and is connected to the material passing passage.
4. feeding plate rail according to claim 1, which is characterized in that further include sorting optical fiber, the choosing of the sorting optical fiber
Material light can be transferred to the feeding end of the material passing passage, for detecting the polar orientation for being moved to feeding end material.
5. feeding plate rail according to claim 1, which is characterized in that further include being blown close to the charging that the feeding end is arranged
Pneumatic module, the charging air blowing component blow material bar including the first fixed seat, forward direction and laterally blow material bar, and the forward direction blows material bar
Setting is tilted down set on the side of first fixed seat and along the direction of the feeding end to the discharge end, it is described lateral
It is set on the other side of first fixed seat and downward along the direction of the vertical feeding end to the direction of discharge to blow material bar
It is obliquely installed, and the forward direction blows material bar and the lateral material bar that blows is connected to the material passing passage.
6. feeding plate rail according to claim 1, which is characterized in that further include be located at the feeding mouth at full material to penetrating
Optical fiber, the full material include the transmitting terminal and receiving terminal for being respectively arranged on the material passing passage opposite sides, the hair to penetrating optical fiber
End is penetrated for sending out the light by the material passing passage, the receiving terminal is for receiving the light that the transmitting terminal is sent out.
7. feeding plate rail according to claim 1, which is characterized in that further include being blown close to the discharging that the discharge end is arranged
Pneumatic module, the discharging air blowing component include that the second fixed seat and discharging inflatable bar, the discharging inflatable bar are set to described second
Setting is tilted down in fixed seat and along the direction of the feeding end to the discharge end, and is connected to the material passing passage.
8. feeding plate rail according to claim 1, it is characterised in that further include being set to the pedestal close to the discharge end
On discharge baffle, the holding tank opposite with the material passing passage that be open is offered in the discharge baffle；And/or
The feeding plate rail further includes optical fiber in place, the relatively described discharge baffle setting of the optical fiber in place, and the light in place
Fine light in place can be transferred in the holding tank.
9. feeding plate rail according to claim 1, which is characterized in that further include the vacuum suction set on the pedestal bottom end
Mouth, the vacuum slot are communicated with the discharge end of the material passing passage, and are generated and adsorbed discharge end material bottom
Suction.
10. a kind of vibration feeding device, which is characterized in that including described in the claims 1-9 any one feeding plate rail,
It is flat shake, disk and circle shake, the feeding plate rail be set to it is described it is flat shake on, on the disk shakes set on the circle, and described send
Material plate rail is docked with the disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721109759.9U CN207861295U (en) | 2017-08-31 | 2017-08-31 | Vibration feeding device and feeding plate rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721109759.9U CN207861295U (en) | 2017-08-31 | 2017-08-31 | Vibration feeding device and feeding plate rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207861295U true CN207861295U (en) | 2018-09-14 |
Family
ID=63474261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721109759.9U Expired - Fee Related CN207861295U (en) | 2017-08-31 | 2017-08-31 | Vibration feeding device and feeding plate rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207861295U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109592356A (en) * | 2018-11-28 | 2019-04-09 | 东莞市启力致尚技术研发有限公司 | A kind of slotting axis equipment for keyboard |
| CN109677852A (en) * | 2019-02-27 | 2019-04-26 | 昆山兴基德自动化设备有限公司 | It is a kind of tiltedly to turn flat from return feeding device |
| CN112389982A (en) * | 2020-11-24 | 2021-02-23 | 博众精工科技股份有限公司 | Material blocking prevention device |
-
2017
- 2017-08-31 CN CN201721109759.9U patent/CN207861295U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109592356A (en) * | 2018-11-28 | 2019-04-09 | 东莞市启力致尚技术研发有限公司 | A kind of slotting axis equipment for keyboard |
| CN109677852A (en) * | 2019-02-27 | 2019-04-26 | 昆山兴基德自动化设备有限公司 | It is a kind of tiltedly to turn flat from return feeding device |
| CN109677852B (en) * | 2019-02-27 | 2024-03-22 | 昆山兴基德自动化设备有限公司 | Oblique-turning self-return feeding device |
| CN112389982A (en) * | 2020-11-24 | 2021-02-23 | 博众精工科技股份有限公司 | Material blocking prevention device |
| CN112389982B (en) * | 2020-11-24 | 2022-05-03 | 博众精工科技股份有限公司 | Material blocking prevention device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180914 Termination date: 20200831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |