CN209141078U - A kind of hole knife punching waste suction mold - Google Patents
A kind of hole knife punching waste suction mold Download PDFInfo
- Publication number
- CN209141078U CN209141078U CN201821929090.2U CN201821929090U CN209141078U CN 209141078 U CN209141078 U CN 209141078U CN 201821929090 U CN201821929090 U CN 201821929090U CN 209141078 U CN209141078 U CN 209141078U
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- Prior art keywords
- hole
- knife
- cutterhead
- cover board
- blade
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- 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.)
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- 239000002699 waste material Substances 0.000 title claims abstract description 69
- 238000004080 punching Methods 0.000 title claims description 14
- 238000005520 cutting process Methods 0.000 claims description 43
- 239000007787 solid Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 244000137852 Petrea volubilis Species 0.000 description 21
- 238000001816 cooling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910000599 Cr alloy Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000000788 chromium alloy Substances 0.000 description 3
- 235000019628 coolness Nutrition 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 229910001315 Tool steel Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000010893 paper waste Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Knives (AREA)
Abstract
The utility model discloses a kind of hole knives to be punched waste suction mold, including cavity, with the chuck and blanking apparatus being fixed on cavity, blanking apparatus includes the cutterhead of cavity upper end setting, cover board on cutterhead is set, cutterhead is equipped with the hole knife base aperture of several putting hole knives, cover board is equipped with hole knife via hole corresponding with hole knife base aperture, hole knife, which is mounted on the hole knife via hole in the knife base aperture of hole and passed through on cover board, makes hole knife upper end protrude from cover board, dise knife is fixed between chuck and cutterhead, the side of cavity is equipped with siphunculus.The utility model is installed to cavity upper end by blanking apparatus combination, while using reasonable wall thickness range and knife height and the step that gets stuck is set, waste material in blanking process is set to can smoothly enter into waste channel and be stopped to drop out from the blade surface of blade and squeeze crack hole knife by the step that gets stuck, unified collection is sucked out in waste material in the knife of hole by cavity side siphunculus, avoids the case where waste material influences processing quality and waste of manpower in blanking process.
Description
Technical field
The utility model relates to be punched production ancillary equipment field more particularly to a kind of punching hole knife and its waste suction to cut mould
Tool.
Background technique
Currently, sand paper type and moulding in the market is various, disk sand paper type therein is also very common, is being punched
Disk sand paper can be punched out simultaneously as needed in disk sand paper, the polishing pad for making disk sand paper be fitted in sander carries out
When polishing, the impurity polished can enter in circular hole the quality that will not be adsorbed on disk coated abrasive surface, and improve polishing, together
When since impurity enters in circular hole be not involved in polishing, reduce the abrasion of disk coated abrasive surface, increase its service life, it is existing
In punching, the antiquated sand paper that punching leaves can be fallen on the disk sand paper of well cutting blanking die, cause punching table top unclear
It is clean, and the antiquated sand paper for needing to leave punching is cleared up, waste of manpower simultaneously causes processing quality defect, and present market is often circulated
Sand paper circular aperture at 7-18 millimeters, existing hole knife is in down-bite jaw blanking process, the knife height of the hole Chang Yinwei knife
Unreasonable with the wall thickness collocation of waste channel, under the situation that outer wall cannot be gradient, waste material passes through difficulty from waste channel, easily
It is dropped out from blade surface or direct squeeze crack hole knife.
Utility model content
The main purpose of the utility model is to provide a kind of hole knives to be punched waste suction mold, and utility model device passes through punching
It cuts out device combination and is installed to cavity upper end, while using reasonable wall thickness range and knife height and the step that gets stuck is set, make to rush
During cutting waste material can smoothly enter into waste channel and by the step that gets stuck stopped will not to drop out from the blade surface of blade with squeeze crack hole knife,
Unified collection is sucked out in waste material in the knife of hole by cavity side siphunculus, avoids being punched the unclean influence processing of table top in blanking process
The case where quality and waste of manpower.The utility model can effectively solve the problems in background technique.
To achieve the above object, the technical solution that the utility model is taken are as follows:
A kind of hole knife punching waste suction mold, including cavity, and the chuck and blanking apparatus that are fixed on cavity, the punching
The cutterhead that device includes the setting of cavity upper end is cut out, the cover board on cutterhead is set, the cutterhead is equipped with several putting hole knives
Hole knife base aperture, the cover board is equipped with hole knife via hole corresponding with hole knife base aperture, and the hole knife is mounted on hole knife base
Hole knife via hole in bore and on cover board makes hole knife upper end protrude from cover board, is fixed with circle between the chuck and cutterhead
The side of knife, the cavity is equipped with siphunculus.
Further, the hole knife includes leading portion and back segment, and the leading portion is structure as a whole with back segment, the top of the leading portion
End is equipped with blade, is equipped with waste channel in the leading portion and back segment, the step that gets stuck, institute are equipped between the blade and waste channel
It states the step internal diameter that gets stuck and is slightly less than waste channel internal diameter, the rear segment length is 4.6mm, the waste material after the cutting of rodding eye knife blade
Into in waste channel, and the waste material avoided enter into waste channel by the step that gets stuck is slipped to hole knife knife from waste channel again
Sword position.
Further, the side wall of the chuck is equipped with tapped through hole, and the upper end side wall of the cavity is equipped with logical with screw thread
The corresponding threaded hole in hole, the tapped through hole are connect by chuck fixed screw with threaded hole, and the cover board is equipped with cover board
Fixed hole, the cutterhead are equipped with cover board fixation hole corresponding with cover board fixed hole, and the cover board fixed hole passes through
Cover board fixing bolt is connect with cover board fixation hole, and the upper end of the cavity is equipped with cutterhead fixing hole, and the cutterhead is equipped with and knife
The corresponding cutterhead fixed hole of disk fixation hole, the cutterhead fixed hole are connected by cutterhead fixing bolt and cutterhead fixing hole
It connects, the mode assembly and disassembly of being bolted are all more convenient, and can be replaced to broken parts.
Further, the upper end that the chuck is located at tapped through hole is equipped with several fastening through-holes, in the fastening through-hole
Equipped with screw, dise knife of the fastening between chuck and cutterhead is squeezed by screw, dise knife is avoided to take off in multiple blanking process
It falls.
Further, the blade is in single-blade, twolip, double three kinds of states of nearly sword.
Further, when the preceding segment length is 12.4mm, waste channel wall thickness is 0.6mm, knife when blade is in single-blade shape
The cutting edge height of sword is 1.3mm, and the step height that gets stuck is 0.6mm, in the circular hole for being cut into different pore size, passes through this cutting edge height
Degree can rapidly enter waste channel with the honest and kind waste material in cutting of waste channel, will not slide from the edge of a knife.
Further, when the blade is in twolip and double nearly swords, blade includes upper cutting edge and lower cutting edge.
Further, when the blade is in twolip, when the preceding segment length is 12.4mm, waste channel wall thickness is 0.5-
0.8mm, upper cutting edge height are 0.4-0.65mm, and lower cutting edge height is 0.3-0.65mm, and the step height that gets stuck is 0.6mm.
Further, when the blade is in double nearly swords, the preceding segment length is 12.1mm, and waste channel wall thickness is 0.6-
0.8mm, upper cutting edge height are 0.4mm, and lower cutting edge height is 0.2mm, and the step height that gets stuck is 0.4mm.
Further, the hole knife base aperture is arc-shaped arrangement on cutterhead.
Working principle: the utility model by the way that chuck is fixed on the outside of the upper end of cavity by chuck fixed screw, then
It by dise knife and chuck clearance fit and is installed in chuck, hole knife lower end is placed in the hole knife base aperture of cutterhead, upper end is worn
Cover board is crossed, is connect cover board with cutterhead using cover board fixing bolt, hole knife is fixed on cutterhead at this time, and cutterhead is passed through dise knife
And with dise knife clearance fit, cutterhead is fixed on to the upper end of cavity by cutterhead fixing bolt, cutterhead is located inside dise knife at this time,
The dise knife chuck and cutterhead is squeezed across fastening through-hole using screw, dise knife is further fixed, can be led to as needed
It crosses lower plate multiple utility model devices are installed on bottom plate, then by the dise knife and hole knife in utility model device
Blade vertically cuts sand paper, according to the thickness of preceding segment length and sand paper, multilayer sand paper can be cut simultaneously, due to hole knife knife
Sword height is lower, and waste material can reach the step that gets stuck quickly, and reach disc sand paper with holes under dise knife cutting, in siphunculus
Side connects suction tube device and the sand paper waste material that hole knife is cut is sucked cavity, and the inspiration suction tube device out of cavity out of hole knife
Unify to collect afterwards.
The utility model has the advantages that can be effectively by the antiquated sand paper suction chamber of punching in blanking process by utility model device
Body, the table top for avoiding punching is unclean and influence processing progress and quality, is not necessarily to clean punching after the completion of simultaneous processing and stay
Under antiquated sand paper, saved manpower, can be pre-assembled with different pore size type blanking apparatus, have when to any aperture
When needing, entire blanking apparatus is substituted for rushing for required aperture by dismountable chuck fixed screw, screw and cutterhead fastening bolt
It is installed again after cutting out device, has saved a large amount of replacing construction.Since knife height is lower, waste material can reach the platform that gets stuck as early as possible
Rank, because the stepped diameters that get stuck less than waste channel diameter, make the waste material into waste channel not flow back to fall from edge facet
Out or squeeze crack hole knife.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is the utility model part explosive view.
Fig. 3 is the structure top view of the unassembled hole knife of the utility model.
Fig. 4 is the overall structure diagram of hole knife of the present invention.
Fig. 5 is the structural schematic diagram that knife blade in hole of the present invention is in single-blade.
Fig. 6 is the structural schematic diagram that knife blade in hole of the present invention is in twolip.
Fig. 7 is structural schematic diagram of the knife blade in hole of the present invention in double nearly swords.
In figure: 1 cavity；2 cutterheads；3 cutterhead fixing bolts；4 hole knives；5 cover boards；6 cover board fixing bolts；7 chucks fix spiral shell
Silk；8 chucks；9 dise knifes；10 fastening through-holes；11 cover board fixed holes；12 hole knife via holes；13 cutterhead fixed holes；14 cutterheads are fixed
Hole；15 threaded holes；16 connecting holes；17 tapped through holes；18 hole knife base apertures；19 screws；20 lower plates；21 siphunculus；22 cover boards are solid
Determine hole；23 back segments；24 leading portions；25 waste channels；26 blades；27 get stuck step；Cutting edge on 28；29 lower cutting edges.
Specific embodiment
To be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, below
In conjunction with specific embodiment, the utility model is further described.
As shown in Figure 1-3, a kind of hole knife is punched waste suction mold, including cavity 1, and the chuck 8 that is fixed on cavity 1 and
Blanking apparatus, the blanking apparatus include the cutterhead 2 of 1 upper end of cavity setting, and the cover board 5 on cutterhead 2, the cutterhead 2 is arranged in
It is equipped with the hole knife base aperture 18 of several arc shooting putting hole knives 4, the cover board 5 is equipped with opposite with hole knife base aperture 18
The hole knife via hole 12 answered, the hole knife 4, which is mounted on the hole knife via hole 12 in hole knife base aperture 18 and passed through on cover board 5, makes hole knife 4
Upper end protrudes from cover board 5, and dise knife 9 is fixed between the chuck 8 and cutterhead 2, and the side of the cavity 1 is equipped with siphunculus 21.
Wherein, the hole knife 4 includes leading portion 24 and back segment 23, and the leading portion 24 is structure as a whole with back segment 23, before described
The top of section 24 is equipped with blade 26, and the leading portion 24 is interior equipped with waste channel 25, the blade 26 and waste channel with back segment 23
The step 27 that gets stuck is equipped between 25,27 internal diameter of step that gets stuck is slightly less than 25 internal diameter of waste channel, and 23 length of back segment is
4.6mm。
Wherein, the side wall of the chuck 8 is equipped with tapped through hole 17, and the upper end side wall of the cavity 1 is equipped with logical with screw thread
The corresponding threaded hole 15 in hole 17, the tapped through hole 17 are connect by chuck fixed screw 7 with threaded hole 15, the cover board 5
It is equipped with cover board fixed hole 11, the cutterhead 2 is equipped with cover board fixation hole 22 corresponding with cover board fixed hole 11, described
Cover board fixed hole 11 is connect by cover board fixing bolt 6 with cover board fixation hole 22, and the upper end of the cavity 1 is fixed equipped with cutterhead
Hole 14, the cutterhead 2 are equipped with cutterhead fixed hole 13 corresponding with cutterhead fixing hole 14, and the cutterhead fixed hole 13 is logical
Cutterhead fixing bolt 3 is crossed to connect with cutterhead fixing hole 14.
Wherein, the upper end that the chuck 8 is located at tapped through hole 17 is equipped with several fastening through-holes 10, the fastening through-hole 10
It is interior to be equipped with screw 19.
Wherein, the blade 26 is in single-blade, twolip, double three kinds of states of nearly sword.
Wherein, when 24 length of leading portion is 12.4mm, 25 wall thickness of waste channel is 0.6mm when blade 26 is in single-blade shape,
The cutting edge height of blade 26 is 1.3mm, and 27 height of step that gets stuck is 0.6mm.
Wherein, when the blade is in twolip and double nearly swords, blade includes upper cutting edge and lower cutting edge.
Wherein, when the blade 26 is in twolip, 24 length of leading portion is 12.4mm, and 25 wall thickness of waste channel is 0.5-
0.8mm, upper 28 height of cutting edge are 0.4-0.65mm, and lower 29 height of cutting edge is 0.3-0.65mm, and the step height that gets stuck is 0.6mm.
Wherein, when the blade 26 is in double nearly swords, 24 length of leading portion is 12.1mm, and 25 wall thickness of waste channel is 0.6-
0.8mm, upper 28 height of cutting edge are 0.4mm, and lower 29 height of cutting edge is 0.2mm, and 27 height of step that gets stuck is 0.4mm.
Wherein, the hole knife base aperture 18 is arc-shaped arrangement on cutterhead 2.
Embodiment one: as shown in Figure 1-3, the utility model is by being fixed on cavity for chuck 8 by chuck fixed screw 7
It on the outside of 1 upper end, then by dise knife 9 and 8 clearance fit of chuck and is installed in chuck 8, knife 4 lower end in hole is placed on cutterhead 2
In hole knife base aperture 18, upper end passes through cover board 5, is connect cover board 5 with cutterhead 2 using cover board fixing bolt 6, at this time 4 quilt of hole knife
Be fixed on cutterhead 2, by cutterhead 2 pass through dise knife 9 and with 9 clearance fit of dise knife, it is by cutterhead fixing bolt 3 that cutterhead 2 is fixed
In the upper end of cavity 1, cutterhead 2 is located inside dise knife 9 at this time, passes through fastening through-hole 10 using screw 19 and squeezes chuck 8 and cutterhead 2
Between dise knife 9, dise knife 9 is further fixed, can be pacified multiple utility model devices by lower plate 20 as needed
It is attached on bottom plate, then sand paper is cut by the dise knife 9 in utility model device is vertical with the blade of hole knife 4, according to
The thickness of leading portion 24 length and sand paper can cut multilayer sand paper simultaneously, and since 4 blade of hole knife, 26 height is lower, waste material can be quickly
Arrival gets stuck step 27, and reaches disc sand paper with holes under the cutting of dise knife 9, connects suction pipe dress in the side of siphunculus 21
It sets the sand paper waste material for cutting hole knife and sucks cavity 1 out of hole knife 4, and the unified collection after inspiration suction tube device out of cavity 1.
Embodiment two: as shown in figure 5, when manufacture cutting aperture is the hole knife in the hole 10mm, using high carbon high chromium alloy work
Has Steel material, in lathe in machining at leading portion and back segment, preceding segment length 12.4mm, rear segment length 4.6mm, waste channel wall thickness
For 0.6mm, the internal diameter of waste channel is 9.63mm, and the cutting edge height of blade is 1.3mm, and the blade tip diameter of blade is 10.53mm,
The step height that gets stuck is 0.6mm, internal diameter 9.03mm.
700~750 DEG C are first preheated after processing is completed, are again heated to 1000~1050 DEG C of coolings in still air,
Tempering: being heated to 150~200 DEG C, stops in this temperature 6 hours, then cooling in still air.After the completion
Hardness is in HRC52 degree.
Embodiment three: as shown in fig. 6, being the twolip hole knife in the hole 10mm in manufacture cutting aperture, using high carbon high chromium alloy
Tool steel material, in lathe in machining at leading portion and back segment, preceding segment length 12.4mm, rear segment length 4.6mm, blade includes upper
Cutting edge and lower cutting edge, waste channel wall thickness are 0.8mm, and waste channel internal diameter is 9.23mm, and upper cutting edge height is 0.6mm, lower sword
Open height is 0.3mm, and the blade tip diameter of blade is 10.53mm, and the step height that gets stuck is 0.4mm, internal diameter 8.83mm.
700~750 DEG C are first preheated after processing is completed, are again heated to 1000~1050 DEG C of coolings in still air.
Tempering: being heated to 150~200 DEG C, stops in this temperature 6 hours, then cooling in still air.After the completion
Hardness is in HRC52 degree.
Example IV: as shown in fig. 7, when manufacture cutting aperture is double nearly sword hole knives in the hole 10mm, using high carbon and chromium
Alloy tool steel material, in lathe in machining at leading portion and back segment, preceding segment length 12.1mm, rear segment length 4.6mm, blade packet
Cutting edge and lower cutting edge are included, waste channel wall thickness is 0.8mm, and waste channel internal diameter is 9.23mm, and upper cutting edge height is 0.4mm,
Lower cutting edge height is 0.2mm, and the blade tip diameter of blade is 10.53mm, and the step height that gets stuck is 0.4mm, internal diameter 8.83mm.
700~750 DEG C are first preheated after processing is completed, are again heated to 1000~1050 DEG C of coolings in still air,
Tempering: being heated to 150~200 DEG C, stops in this temperature 6 hours, then cooling in still air.After the completion
Hardness is in HRC52 degree.
It is above that certain exemplary embodiments of the utility model are only described by way of explanation, undoubtedly, for
Those skilled in the art can be with a variety of different without departing from the spirit and scope of the utility model
Mode is modified described embodiment.Therefore, above-mentioned attached drawing and description are regarded as illustrative in nature, and should not be construed as
Limitation to the utility model claims protection scope.
Claims (10)
1. a kind of hole knife is punched waste suction mold, it is characterised in that: including cavity, and the chuck and punching dress that are fixed on cavity
It sets, the blanking apparatus includes the cutterhead of cavity upper end setting, and the cover board on cutterhead is arranged in, and the cutterhead is equipped with several
The hole knife base aperture of putting hole knife, the cover board are equipped with hole knife via hole corresponding with hole knife base aperture, the hole knife installation
Hole knife via hole in the knife base aperture of hole and on cover board makes hole knife upper end protrude from cover board, solid between the chuck and cutterhead
Surely it is equipped with dise knife, the side of the cavity is equipped with siphunculus.
2. a kind of hole knife according to claim 1 is punched waste suction mold, it is characterised in that: the hole knife includes leading portion with after
Section, the leading portion are structure as a whole with back segment, and the top of the leading portion is equipped with blade, lead in the leading portion and back segment equipped with waste material
Road is equipped with the step that gets stuck between the blade and waste channel, the step internal diameter that gets stuck is slightly less than waste channel internal diameter, described
Segment length is 4.6mm afterwards.
3. a kind of hole knife according to claim 1 is punched waste suction mold, it is characterised in that: the side wall of the chuck is equipped with
The upper end side wall of tapped through hole, the cavity is equipped with threaded hole corresponding with tapped through hole, and the tapped through hole passes through chuck
Fixed screw is connect with threaded hole, and the cover board is equipped with cover board fixed hole, and the cutterhead is equipped with and cover board fixed hole
Corresponding cover board fixation hole, the cover board fixed hole are connect by cover board fixing bolt with cover board fixation hole, the cavity
Upper end be equipped with cutterhead fixing hole, the cutterhead be equipped with cutterhead fixed hole corresponding with cutterhead fixing hole, the cutterhead
Fixed hole is connect by cutterhead fixing bolt with cutterhead fixing hole.
4. a kind of hole knife according to claim 1 is punched waste suction mold, it is characterised in that: the chuck is located at tapped through hole
Upper end be equipped with several fastening through-holes, screw is equipped in the fastening through-hole.
5. a kind of hole knife according to claim 2 is punched waste suction mold, it is characterised in that: the blade in single-blade, twolip,
Three kinds of states of double nearly swords.
6. a kind of hole knife according to claim 2 is punched waste suction mold, it is characterised in that: the preceding segment length is 12.4mm
When, waste channel wall thickness is 0.6mm when blade is in single-blade shape, and the cutting edge height of blade is 1.3mm, and the step height that gets stuck is
0.6mm。
7. a kind of hole knife according to claim 5 is punched waste suction mold, it is characterised in that: the blade is in twolip and double close
When sword, blade includes upper cutting edge and lower cutting edge.
8. being punched waste suction mold according to claim 2 or a kind of hole knife as claimed in claim 7, it is characterised in that: the blade
When in twolip, when the preceding segment length is 12.4mm, waste channel wall thickness is 0.5-0.8mm, and upper cutting edge height is 0.4-
0.65mm, lower cutting edge height are 0.3-0.65mm, and the step height that gets stuck is 0.6mm.
9. being punched waste suction mold according to claim 5 or a kind of hole knife as claimed in claim 7, it is characterised in that: the blade
When in double nearly swords, the preceding segment length is 12.1mm, and waste channel wall thickness is 0.6-0.8mm, and upper cutting edge height is 0.4mm, under
Cutting edge height is 0.2mm, and the step height that gets stuck is 0.4mm.
10. a kind of hole knife according to claim 1 is punched waste suction mold, it is characterised in that: the hole knife base aperture is in knife
Arrangement is arc-shaped on disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821929090.2U CN209141078U (en) | 2018-11-22 | 2018-11-22 | A kind of hole knife punching waste suction mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821929090.2U CN209141078U (en) | 2018-11-22 | 2018-11-22 | A kind of hole knife punching waste suction mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209141078U true CN209141078U (en) | 2019-07-23 |
Family
ID=67286881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821929090.2U Expired - Fee Related CN209141078U (en) | 2018-11-22 | 2018-11-22 | A kind of hole knife punching waste suction mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209141078U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109397378A (en) * | 2018-11-22 | 2019-03-01 | 合肥旭丰和机电科技有限公司 | A kind of hole knife punching waste suction mold |
-
2018
- 2018-11-22 CN CN201821929090.2U patent/CN209141078U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109397378A (en) * | 2018-11-22 | 2019-03-01 | 合肥旭丰和机电科技有限公司 | A kind of hole knife punching waste suction mold |
| CN109397378B (en) * | 2018-11-22 | 2024-06-18 | 合肥旭丰和机电科技有限公司 | Waste-sucking die for punching hole cutters |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190723 |
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| CF01 | Termination of patent right due to non-payment of annual fee |