CN110434758A - A kind of positive and negative separation equipment of bottoming drill - Google Patents
A kind of positive and negative separation equipment of bottoming drill Download PDFInfo
- Publication number
- CN110434758A CN110434758A CN201910844764.1A CN201910844764A CN110434758A CN 110434758 A CN110434758 A CN 110434758A CN 201910844764 A CN201910844764 A CN 201910844764A CN 110434758 A CN110434758 A CN 110434758A
- Authority
- CN
- China
- Prior art keywords
- rod
- feeding
- rack
- feeding belt
- bottoming drill
- 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.)
- Pending
Links
- 238000000926 separation method Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 94
- 239000003292 glue Substances 0.000 claims abstract description 35
- 238000012546 transfer Methods 0.000 claims abstract description 23
- 238000005553 drilling Methods 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000004026 adhesive bonding Methods 0.000 claims description 22
- 239000004033 plastic Substances 0.000 claims description 17
- 230000004308 accommodation Effects 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 7
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 239000000047 product Substances 0.000 abstract description 6
- 239000012467 final product Substances 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000002365 multiple layer Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses a kind of positive and negative separation equipment of bottoming drill, including rack, feeding mechanism is provided in the rack；Feeding device；Material transfer rod is rotatably provided in the rack at the feeding device end, and is connected with the discharge end of the feeding device；Material rod is chosen, is rotatably provided in the rack at the feeding device end, and be connected the material transfer rod and the feeding belt, be configured for multidrill and be delivered to the feeding belt；First sizer is configured as glue being coated onto the surface for choosing material rod；Second sizer is configured as glue being coated onto the feeding belt surface；With scrape boring device, the back-drilling chosen of material rod will be chosen by, which being configured as, scrapes；The multidrill machine is during feeding, the principle that the adhesion strength difference that bottoming drill is generated by upper and lower difference in areas can be utilized with timeliness chooses back-drilling in feeding process, to avoid for back-drilling being mixed into finished product, processing efficiency is not only effectively improved, but also effectively promote final product quality.
Description
Technical field
The present invention relates to bottoming drill processing technique field, a kind of positive and negative separation equipment of bottoming drill.
Background technique
Bottoming drill is greater than the size of upper surface due to the size of lower end surface, is all in the past to need to arrange when carrying out polishing operation
Material operation, progress discharge efficiency is very low and at high cost in this way, and people devise some may be implemented thus
The equipment for automating discharge, to assist the polishing operation of bottoming drill, thus improvement effect, although this kind of setting may be implemented automatically
Discharge, but be easy to appear back-drilling during discharge, if these back-drilling polished together not only can at
It is mixed into a large amount of substandard products in product material, and has an effect on processing efficiency, therefore continues a kind of technical solution that can solve the above problem.
Summary of the invention
To solve the above problems, the invention proposes a kind of simple and reasonable for structure, high production efficiency can effectively be chosen instead
The positive and negative separation equipment of the bottoming drill of brill.
The technical scheme adopted by the invention is that: a kind of positive and negative separation equipment of bottoming drill, including rack are set in the rack
It is equipped with feeding mechanism, the feeding mechanism includes the big roller for being rotatably provided in rack both ends, and is sleeved on two big rollers
On feeding belt, further includes:
One end of the rack is arranged in feeding device；
Material transfer rod is rotatably provided in the rack at the feeding device end, and is held in the mouth with the discharge end of the feeding device
It connects；
Material rod is chosen, is rotatably provided in the rack at the feeding device end, and be connected the material transfer rod and the feeding
Band is configured for multidrill and is delivered to the feeding belt；
First sizer is arranged in the rack, is configured as glue being coated onto the surface for choosing material rod；
Second sizer is arranged in the bottom of the frame, is configured as glue being coated onto the feeding belt surface；Dress is bored with scraping
It sets,
It is arranged in the rack and is contacted with the surface for choosing material rod top side, the back-drilling that material rod is chosen will be chosen by, which being configured as, scrapes
Under.
In through the above technical solution choosing material rod and feeding belt surface difference coating glue, be effectively utilized bottoming drill by
The principle for the adhesion strength difference that upper and lower difference in areas generates chooses the back-drilling in feeding process, to improve final product quality and processing effect
Rate.
Further, second sizer includes:
Glue groove is arranged in the bottom of the frame, positioned at the lower section of feeding belt；
Plastic roll rod is rotatably set to the bottom of the frame, and is located in the glue groove, and periphery is outer with the feeding belt
Surface contact；
With pressure zone rod, it is rotatably set to the bottom of the frame, and is located at the feeding belt inside front and is used for the feeding
Band presses to the plastic roll rod.
In above-mentioned further technical solution by plastic roll by way of toward gluing on feeding belt, glue it is high-efficient, and
Glue is uniform, to further improve processing quality.
Further, first sizer includes gluing rod and upper packing element；
The gluing rod may be rotatably mounted in the rack, and periphery is with the material rod periphery of choosing far from feeding belt side phase
Patch；
The gluing tub is set to above the rack, and its bottom has direction gluing rod and chooses the plastic emitting between material rod
Pipe.
Above-mentioned further technical solution equally also by the way of plastic roll toward choose material rod on glue, be also effectively ensured
Glue speed and the gluing uniformity.
Further, the interference fit for choosing material rod and the material transfer rod and the gluing rod.
Further, the boring device of scraping chooses material rod top side close to feeding device side described in and chooses the upside formation of material rod
One accommodation space.
Boring device setting will be scraped by above-mentioned further technical solution can accommodate with material rod side formation accommodation space is chosen
The back-drilling scraped, to facilitate unified clear up.
The present invention compared with prior art, has the advantages that
Bottoming drill can be utilized by upper and lower difference in areas during feeding in the positive and negative separation equipment of bottoming drill of the invention with timeliness
The principle of the adhesion strength difference of generation chooses the back-drilling in feeding process, to avoid for back-drilling being mixed into finished product, does not mention only effectively
High processing efficiency, and effectively promote final product quality, whole design is simple, rationally, and easy to operate, using effect is very
It is good.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is overall structure diagram of the invention;
Fig. 2 is to choose material rod in the present invention to choose material status diagram；
Fig. 3 is the sectional view of bottoming drill in the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
It to be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occurs
Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
The positive and negative separation equipment of a kind of bottoming drill as shown in FIG. 1 to FIG. 3, including rack 1 are provided with feeding in the rack 1
Mechanism, the feeding mechanism includes the big roller 2 for being rotatably provided in 1 both ends of rack, and is sleeved on sending on two big rollers 2
Material strip 3, and wherein a big roller 2 or two big rollers 2 have the driving mechanism for driving it to rotate；The bottoming drill is just
Anti- separation equipment further includes feeding device 12, material transfer rod 4, chooses material rod 5, the first sizer, the second sizer and scrape brill dress
It sets；Feeding device 12 be hopper, be arranged in the rack 1 one end be used for by material be conveyed to material transfer rod 4 and choose material rod 5 and
On material to feeding belt 3；Material transfer rod 4 is rotatably provided in the rack 1 close to the feeding device end, and with the feeding device
Discharge end be connected the material that transfers out for receiving feeding device 12；Material rod 5 is chosen to be rotatably provided in close to feeding dress
It sets in the rack 1 at end, and is connected the material transfer rod 4 and the feeding belt 3, for carrying out multidrill and being delivered to the feeding belt 3；
First sizer is arranged in the rack 1, for glue to be coated onto the surface for choosing material rod 5；Second sizer is set
It sets in 1 bottom of rack, for glue to be coated onto 3 surface of feeding belt；Scrape boring device be arranged in the rack 1 and with
The surface contact for choosing material 5 top side of rod is scraped for will choose the back-drilling that material rod 5 is chosen.
Due to the trapezoidal structure in section of 101 semi-finished product of bottoming drill, base area is greater than top surface area, is choosing material rod 5
Coating glue is distinguished with 3 surface of feeding belt, and the bottoming drill 101 that bottom surface is adhered with feeding belt 3 in feeding process, which can be then attached to, to be sent
On material strip 3, bottom surface and the bottoming drill 101(i.e. back-drilling for choosing the material adhesion of rod 3) it can then be attached to and choose on material rod 5, to efficiently use
The principle for the adhesion strength difference that bottoming drill 101 is generated by upper and lower difference in areas chooses the back-drilling in feeding process, to improve into
Quality and processing efficiency.
It is worth noting that, second sizer includes glue groove 6, plastic roll rod 7 and pressure zone rod 8；Glue groove 6, setting exist
1 bottom of rack, positioned at the lower section of feeding belt 3；Plastic roll rod 7 is rotatably set to 1 bottom of rack, and is located at the glue
In slot 6, the appearance face contact of periphery and the feeding belt 3；Pressure zone rod 8 is rotatably set to 1 bottom of rack, and position
It is used to the feeding belt 3 pressing to the plastic roll rod 7 in 3 inside front of feeding belt；Glue is placed in glue groove 6, due to
Plastic roll rod 6 is set in glue groove to be contacted with 3 surface of feeding belt again with glue-contact, can smear glue during its rolling
To 3 surface of feeding belt；Toward gluing on feeding belt by way of plastic roll, glue high-efficient, and glue is uniform, thus further
Improve processing quality；Wherein, plastic roll rod 7 and pressure zone rod 8 and feeding belt 3 are interference fitted, since it is interference fitted 7 He of plastic roll rod
The rotation of pressure zone rod 8, which can be, drives its rotation by feeding belt 3, and driving mechanism can also be separately provided and drive its rotation, individually
Two nunchakus bodies can be driven to rotate synchronously together with feeding belt 3 using motor and belt pulley when driving mechanism is set.
It is also to be noted that first sizer includes gluing rod 9 and upper packing element 10；The gluing rod 9 can turn
Dynamic to be mounted in the rack 1, periphery expects that 5 periphery of rod is affixed far from 3 side of feeding belt with described choose；The upper packing element 10
It is set up in 1 top of rack, and its bottom has towards gluing rod 9 and chooses the rubber hose 11 between material rod 5, glue is placed
In upper packing element 10, glue is delivered to gluing rod 9 and chooses material rod 5 by the rubber hose 11 being arranged by its bottom, is being glued rod 9 and is being chosen
Material rod 5 is affixed under the action of rolling, can be applied to glue and be chosen material 2 surface of rod；It, can be in upper packing element 10 in order to facilitate plastic emitting
Driving device of the glue from the smooth plastic emitting of rubber hose 11 is set, which can be screw rod discharging device；In order to preferably glue,
Multiple rubber hoses 11 can be set, be evenly distributed with respectively along gluing rod 9 with material 2 axis direction of rod is chosen；Also two or two can be set
A above upper packing element 10.
In the present embodiment, the feeding device 12 is hopper, and the discharge end of hopper extends to the upside of material transfer rod 4, will
Bottoming drill, which is conveyed to, chooses material rod.In some other embodiment, hopper and between also set up material-conveying belt, and be arranged above material-conveying belt
Positive stop strip, making the height of positive stop strip and material-conveying belt only allows a bottoming drill to pass through, to prevent bottoming drill multiple-layer stacked, hopper
Bottoming drill is first conveyed to material-conveying belt, then is transported on material transfer rod 4 by material-conveying belt.
In the present embodiment, 4 surface of material transfer rod is interference fitted with material 5 surface of rod is chosen, and chooses material 5 surface of rod and 3 table of feeding belt
Face interference fit, gluing 9 surface of rod are interference fitted with material 5 surface of rod is chosen；When feeding belt 3 operates, material rod is chosen in the drive of feeding belt 3
5 rotations, and then drive material transfer rod 4 and gluing rod 9 to rotate by choosing material rod 5；In some other embodiment, material transfer rod 4 chooses material
Rod 5 and gluing rod 9 are respectively arranged with the driving mechanism for driving its each autorotation, and each driving mechanism drives itself and feeding belt 3
It rotates synchronously, driving mechanism can be motor and drive each nunchakus body rotation by belt pulley and belt, when drive is respectively set in each nunchakus body
When motivation structure, mutual settable certain interval, to facilitate bottoming drill to pass through.
In the present embodiment, the boring device of scraping is the scraper 18 being fixedly mounted in rack 1, chooses material positioned at described
5 top side of rod forms an accommodation space 16 on the upside of material rod 5 close to feeding device side, along choosing the axial setting of material rod 5 and choosing, the scraper 15
Side be affixed with material 5 surface of rod is chosen, be attached to and choose bottoming drill 101 on material 5 surface of rod when turning to scraper 15, in scraper 18
It is rested under barrier effect at accommodation space 16, it can be by manually removing after bottoming drill 101 is completely upper at the accommodation space 16.
In the present embodiment, the feeding belt 3 is that rubber material is made；It chooses material rod 5 and the nunchakus body outer layer of material transfer rod 4 is
Rubber layer, in feeding, bottoming drill 101 can squeeze rubber layer, choose material rod 5 and biography to realize that bottoming drill 101 successfully passes through
Expect the gap between rod 4 and across the gap chosen material rod 5 and feeding belt 3.When practical application, bottoming drill 101 is placed
On in hopper, bottoming drill 101 is delivered to 4 surface of material transfer rod by hopper, at this point, the large end face and biography of most of bottoming drill 101
Expect the surface contact of rod 4, the table of small end face and material transfer rod 4 that the back-drilling and some substandard products that fraction generates during transportation are bored
Bottoming drill 101 is delivered to after the rotation of material transfer rod 4 and chooses material 5 surface of rod by face contact, is coated with glue due to choosing material rod 5, flat
It bores 101 and is attached to choose and expect 5 surface of rod, the small end face of most of bottoming drill 101 is contacted with the surface for choosing material rod 5 at this time, fraction
The large end face of back-drilling 102 is contacted with the surface for choosing material rod 5, and bottoming drill 101 is delivered to 3 table of feeding belt after choosing material rod 5 and rotating
Face, since the surface of feeding belt 3 is equally coated with glue, the area of large end face is greater than small end face area, and the area of large end face is viscous
Put forth effort the adhesion strength for being better than small end face, is coated with choosing for glue in the logical sample of contact and expects 5 surface of rod and 3 surface of feeding belt, bottoming drill 101
Then be attached to big end face contact side, i.e., after choosing material rod 5 and rotating the small end face of original most of bottoming drill 101 with choose material rod 5
Surface contact, large end face are contacted with 3 surface of feeding belt, and the large end face of fraction back-drilling 102 is contacted with the surface for choosing material rod 5, small
End face is contacted with 3 surface of feeding belt, and under the action of adhesion strength difference, most of bottoming drill 101 is attached to feeding by large end face
With on 3 surfaces and being delivered to polishing machine by feeding belt 3 and polished to the small end face of bottoming drill 101, fraction back-drilling 102 with
It chooses material rod 5 to roll to scraper 15, be rested at accommodation space 16 under the action of scraper 18, finally by manually removing, led to
It crosses while the above process realizes 101 feeding of bottoming drill and chooses most of back-drilling 102, to improve processing quality and processing effect
Rate.
In some embodiments, the feeding belt of polissoir general setting and rack for being polished to bottoming drill
Side, and drill is scraped by what finished product brill scraped in the setting of the end of rack.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (6)
1. a kind of positive and negative separation equipment of bottoming drill, including rack, feeding mechanism, the feeding mechanism packet are provided in the rack
The big roller for being rotatably provided in rack both ends is included, and the feeding belt being sleeved on two big rollers, which is characterized in that also wrap
It includes:
Upper one end of rack is arranged in feeding device；
Material transfer rod is rotatably provided in the rack at the feeding device end, and is held in the mouth with the discharge end of the feeding device
It connects；
Material rod is chosen, is rotatably provided in the rack at the feeding device end, and be connected the material transfer rod and the feeding
Band is configured for multidrill and is delivered to the feeding belt；
First sizer is arranged in the rack, is configured as glue being coated onto the surface for choosing material rod；
Second sizer is arranged in the bottom of the frame, is configured as glue being coated onto the feeding belt surface；Dress is bored with scraping
It sets,
It is arranged in the rack and is contacted with the surface for choosing material rod top side, the back-drilling that material rod is chosen will be chosen by, which being configured as, scrapes
Under.
2. the positive and negative separation equipment of a kind of bottoming drill according to claim 1, it is characterised in that: the second sizer packet
It includes:
Glue groove is arranged in the bottom of the frame, positioned at the lower section of feeding belt；
Plastic roll rod is rotatably set to the bottom of the frame, and is located in the glue groove, and periphery is outer with the feeding belt
Surface contact；
With pressure zone rod, it is rotatably set to the bottom of the frame, and is located at the feeding belt inside front and is used for the feeding
Band presses to the plastic roll rod.
3. the positive and negative separation equipment of a kind of bottoming drill according to claim 2, it is characterised in that: the first sizer packet
Include gluing rod and upper packing element；
The gluing rod may be rotatably mounted in the rack, and periphery is with the material rod periphery of choosing far from feeding belt side phase
Patch；
The gluing tub is set to above the rack, and its bottom has direction gluing rod and chooses the plastic emitting between material rod
Pipe.
4. the positive and negative separation equipment of a kind of bottoming drill according to claim 3, it is characterised in that: described choose is greater than between material rod
The diameter of the material transfer rod and the gluing rod.
5. the positive and negative separation equipment of a kind of bottoming drill according to claim 4, it is characterised in that: described to choose material rod and institute
State the interference fit of material transfer rod and the gluing rod.
6. a kind of positive and negative separation equipment of bottoming drill described in -5 any one according to claim 1, it is characterised in that: described to scrape brill
Device expects that rod top side forms an accommodation space with material rod upside is chosen close to feeding device side positioned at described choose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910844764.1A CN110434758A (en) | 2019-09-07 | 2019-09-07 | A kind of positive and negative separation equipment of bottoming drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910844764.1A CN110434758A (en) | 2019-09-07 | 2019-09-07 | A kind of positive and negative separation equipment of bottoming drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110434758A true CN110434758A (en) | 2019-11-12 |
Family
ID=68439541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910844764.1A Pending CN110434758A (en) | 2019-09-07 | 2019-09-07 | A kind of positive and negative separation equipment of bottoming drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110434758A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0084202A1 (en) * | 1982-01-15 | 1983-07-27 | Toshin Kogyo Co. Ltd. | Apparatus for intermittently driving endless belt in automatic screen printing machine |
| CN1794961A (en) * | 2003-06-06 | 2006-06-28 | 宝洁公司 | Methods and apparatus for bonding materials, especially materials used in absorbent articles |
| CN204380850U (en) * | 2014-12-12 | 2015-06-10 | 湖南金天钛业科技有限公司 | Titanium sponge chooses material and batch mixing and feeding device |
| CN106625212A (en) * | 2016-12-30 | 2017-05-10 | 金孙胜 | Automatic sieving machine |
| CN210616176U (en) * | 2019-09-07 | 2020-05-26 | 浦江县森信水晶有限公司 | Positive and negative splitter of flat brill |
-
2019
- 2019-09-07 CN CN201910844764.1A patent/CN110434758A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0084202A1 (en) * | 1982-01-15 | 1983-07-27 | Toshin Kogyo Co. Ltd. | Apparatus for intermittently driving endless belt in automatic screen printing machine |
| CN1794961A (en) * | 2003-06-06 | 2006-06-28 | 宝洁公司 | Methods and apparatus for bonding materials, especially materials used in absorbent articles |
| CN204380850U (en) * | 2014-12-12 | 2015-06-10 | 湖南金天钛业科技有限公司 | Titanium sponge chooses material and batch mixing and feeding device |
| CN106625212A (en) * | 2016-12-30 | 2017-05-10 | 金孙胜 | Automatic sieving machine |
| CN210616176U (en) * | 2019-09-07 | 2020-05-26 | 浦江县森信水晶有限公司 | Positive and negative splitter of flat brill |
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