CN111590680A - Handle protective belt punching device of badminton racket - Google Patents
Handle protective belt punching device of badminton racket Download PDFInfo
- Publication number
- CN111590680A CN111590680A CN202010400055.7A CN202010400055A CN111590680A CN 111590680 A CN111590680 A CN 111590680A CN 202010400055 A CN202010400055 A CN 202010400055A CN 111590680 A CN111590680 A CN 111590680A
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- Prior art keywords
- spring
- fixedly connected
- groove
- arc
- protective belt
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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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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/01—Means for holding or positioning work
- B26D7/02—Means for holding or positioning work with clamping means
- B26D7/025—Means for holding or positioning work with clamping means acting upon planar surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/18—Means for removing cut-out material or waste
- B26D7/1845—Means for removing cut-out material or waste by non mechanical means
- B26D7/1854—Means for removing cut-out material or waste by non mechanical means by air under pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/22—Safety devices specially adapted for cutting machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/02—Advancing webs by friction roller
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
The invention relates to the technical field of sports goods and equipment, and discloses a perforating device for a handle protective belt of a badminton racket, which comprises a shell, wherein the shell comprises: the arc wall, first fixed column, second fixed column, rectangular channel and spherical groove, the outside end of slider is connected with the cylindricality sword, and the front end of L type pole is connected with the cutting frame, is connected with second spring and third spring between the lower part of L type pole and first fixed column, the second fixed column, and the rear portion left end of L type pole is connected with the piston, and tracheal middle part is connected with the gasbag. Through the great tensile degree of third spring, third spring pulling cutting frame and L type pole move to the lower part of arc wall, and push the second spring and move the right side that the arc wall resets under the inertial removal of cutting frame and L type pole, and current protective belt perforating device has been solved to this structure possesses the problem that work efficiency is low, working strength is big.
Description
Technical Field
The invention relates to the technical field of sports goods and equipment, in particular to a punching device for a handle protective belt of a badminton racket.
Background
The badminton racket generally comprises a racket head, a racket rod, a racket handle and a joint of a racket frame and the racket rod. With the development of science and technology, the racket is developed to be lighter and lighter, the racket frame is harder and the racket rod has better elasticity. And some new materials are researched and developed, so that the feather is lighter, stronger and more durable, more vibration and shock are absorbed, and meanwhile, a racket manufacturer has a larger play space in the design of the hardness, the ball feeling and the batting performance of the racket.
In the manufacturing process of racket, skid that leads to in order to prevent user's hand wearing and tearing and sweat, need to twine the protecting band in racket's bottom handle department usually, even aperture has been seted up to the inside of protecting band, these apertures are convenient for absorb sweat, thereby further avoid the emergence of skidding, but current handle protecting band perforating device can only punch to a protecting band, the waste material after punching can not be cleared up fast, and punch at every turn and need the protecting band pause to remove, thereby lead to the problem that work efficiency is low and working strength is big, in addition, some can be too many to the drive that the device that the protecting band persisted to punch used, and complex operation and needs extra extrusion fixing device, we have proposed a handle protecting band perforating device of racket in order to solve this problem.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the punching device for the handle protective belt of the badminton racket, which has the advantages of high working efficiency, automatic waste cleaning, working strength reduction and protective belt extrusion and fixation, and solves the problems that the existing protective belt punching device has low working efficiency, can not automatically clean waste, has high working strength and can not extrude and fix the protective belt.
(II) technical scheme
In order to achieve the purposes of high working efficiency, automatic waste cleaning, working strength reduction and protection belt extrusion and fixation, the invention provides the following technical scheme: a handle guard band perforating device of racket, includes the shell, the shell includes: the arc wall, first fixed column, the second fixed column, rectangular channel and spherical groove, the inside downside left end fixedly connected with support column of shell, the upper end of support column is rotated and is connected with the winding drum, the outside roll connection of winding drum has the protecting band, the inside of shell and the upper portion fixedly connected with backup pad at the right side protecting band, the inside of shell just rotates above the backup pad and is connected with the drive shaft, the outside fixedly connected with cylinder of drive shaft, the inside outside of cylinder all encircles and is equipped with the columnar groove, the sword spout has all been seted up in the inside of columnar groove in the inside of cylinder and in the equal sliding connection in the inside of sword spout, the equal fixedly connected with cylindricality sword of outside end of slider, the lower extreme of slider and the first spring of inside fixedly connected with of cylinder, the rear end of cylinder rotates and is connected with the fixed disk: through-hole and arc lead to the groove, downside and equal fixedly connected with connecting rod on the shell on the rear end of fixed disk, the rear end of fixed disk and lead to groove intercommunication fixedly connected with trachea with the arc, tracheal lower extreme fixedly connected with collecting box, the inside of shell and sliding connection has L type pole in the arc, the front end fixedly connected with cutting frame of L type pole, the lower part of L type pole and first fixed column, respectively fixedly connected with second spring and third spring between the second fixed column, the rear portion left end of L type pole and at the rectangular channel fixedly connected with piston, tracheal middle part just is at spherical inslot fixedly connected with gasbag.
Preferably, the upper portion of arc wall is horizontal spout, and keeps the level with the protective band on it, and the lower part of arc wall is the arc and corresponds with the position of first fixed column and second fixed column to guarantee that the cutting frame is at the upper portion horizontal migration of arc wall, further guarantee the cutting stability of protective band.
Preferably, the length of the arc-shaped through groove is smaller than the distance between adjacent cylindrical grooves, so that the arc-shaped through groove can be communicated with only one cylindrical groove.
Preferably, the right end of the arc-shaped through groove corresponds to the central axis of the through hole, so that when the cylindrical knife cutting protective belt reaches the maximum cutting depth, the arc-shaped through groove is communicated with the cylindrical groove, and at the moment, the gas in the air bag blows the waste in the cylindrical knife to the collecting box through the air pipe.
Preferably, the air pipe is provided with a one-way valve at the upper part of the rectangular groove and between the rectangular groove and the air bag, so that unidirectional air blowing in the air bag is ensured.
Preferably, the cutting frame is internally provided with a cavity and communicated with an air pipe; the upper part of the cutting frame is provided with a cutting through hole corresponding to the cylindrical knife.
Preferably, the second spring is a compression spring, the third spring is an extension spring, and the second spring and the third spring are connected, so that the intermittent movement of the cutting frame is ensured.
(III) advantageous effects
Compared with the prior art, the invention provides a perforating device for a handle protective belt of a badminton racket, which has the following beneficial effects:
1. this handle guard band perforating device of racket, drive the guard band through the winding drum and remove in the backup pad, the drive shaft drives the cylinder simultaneously and rotates, the cylinder drives the cylindricality sword and rotates, the cylindricality sword extrudees and cuts it with the guard band, the cylindricality sword extrudees through the first spring of slider extrusion, the cylinder is with guard band looks pressfitting, this structure has not only reached the purpose that lasts the cutting guard band, and can extrude fixedly to the guard band, the cutting of cylindricality sword is cushioned to first spring simultaneously, thereby further reduce the wearing and tearing of cylindricality sword.
2. The handle protective belt punching device of the badminton racket is contacted with the cutting frame through the cylindrical knife, the cylindrical knife drives the cutting frame and the L-shaped rod on the right side of the cutting frame to slide along the arc-shaped groove, when the cutting machine does not cut, the cutting frame and the L-shaped rod stay at the upper end of the right side of the arc-shaped groove under the pushing of the second spring and the tensioning of the third spring, when the cylindrical knife drives the cutting frame and the L-shaped rod to move to the left end of the arc-shaped groove, because the third spring has larger stretching degree, the third spring pulls the cutting frame and the L-shaped rod to move to the lower part of the arc-shaped groove, and the second spring is extruded to move to the right side of the arc-shaped groove to reset under the inertia movement of the cutting frame and the L-shaped rod, the structure achieves the aim of relative movement of the cutting frame and the cylindrical knife, thereby guarantee the cutting of protective belt at the removal in-process, further solved current protective belt perforating device and possessed the problem that work efficiency is low, working strength is big.
3. This handle guard band perforating device of racket, drive cutting frame and the removal of L type pole through the cylindricality sword, the rear end of L type pole drives piston extrusion rectangular channel, gas in the rectangular channel enters into the gasbag through the trachea, when the right part that the cylindricality sword was gone up to the cylindricality sword and arc led to the groove is connected, the cylindricality sword reaches the maximum depth of cut on the guard band, gas in the gasbag is blown through the waste material that the cylindricality sword was led to the groove through cylindricality groove and arc, the waste material in the cylindricality sword is stored to the collection incasement through the trachea, this structure has reached the effect of automatic clearance waste material, thereby solved current guard band perforating device and can not clear up the waste material automatically and lead to the problem of polluted environment.
4. This handle guard band perforating device of racket blows the waste material in with the cylindricality sword through the trachea through the gas in the gasbag and sends the collecting box, and the trachea all is provided with the check valve between the upper portion of rectangular channel and gasbag to the folk prescription is blown in the assurance gasbag.
Drawings
FIG. 1 is a sectional view of the overall front structure of the present invention;
FIG. 2 is a sectional view showing the front structure of the drum according to the present invention;
FIG. 3 is an enlarged view of the structure of FIG. 2 at A according to the present invention;
FIG. 4 is a left side view of the related structure of the drum of the present invention;
FIG. 5 is a front view of the fixing plate of the present invention;
FIG. 6 is a cross-sectional view of the structure of FIG. 1 at B in accordance with the present invention;
FIG. 7 is a cross-sectional view of a portion of the structure of FIG. 6 in accordance with the present invention;
fig. 8 is a structural sectional view of a rear portion of fig. 6 according to the present invention.
In the figure: the device comprises a shell 1, an arc-shaped groove 101, a first fixing column 102, a second fixing column 103, a rectangular groove 104, a spherical groove 105, a support column 2, a winding drum 3, a protective belt 4, a support plate 5, a driving shaft 6, a roller 7, a column-shaped groove 701, a knife sliding groove 702, a sliding block 8, a column-shaped knife 9, a first spring 10, a fixed disc 11, a through hole 1101, an arc-shaped through groove 1102, a connecting rod 12, an air pipe 13, a collecting box 14, a rod 15L, a cutting frame 16, a second spring 17, a third spring 18, a piston 19 and an air bag 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, a handle guard band punching device for a badminton racket includes a housing 1, the housing 1 includes: an arc-shaped groove 101, a first fixing column 102, a second fixing column 103, a rectangular groove 104 and a spherical groove 105, wherein a supporting column 2 is fixedly connected to the left end of the lower side in the casing 1, a winding drum 3 is rotatably connected to the upper end of the supporting column 2, a protective belt 4 is rotatably connected to the outer side of the winding drum 3, a supporting plate 5 is fixedly connected to the inner portion of the casing 1 and the upper portion of the protective belt 4 at the right side, a driving shaft 6 is rotatably connected to the inner portion of the casing 1 and above the supporting plate 5, a roller 7 is fixedly connected to the outer side of the driving shaft 6, cylindrical grooves 701 are arranged around the outer side of the inner portion of the roller 7, knife sliding grooves 702 are arranged in the inner portion of the roller 7 and on the outer side of the cylindrical grooves 701, sliding blocks 8 are slidably connected to the inner portion of the roller 7 and in the knife sliding grooves 702, cylindrical knives 9 are fixedly, the rear end of cylinder 7 is rotated and is connected with fixed disk 11, and fixed disk 11 includes: through-hole 1101 and arc through-groove 1102, the length of arc through-groove 1102 is less than the distance of adjacent cylindrical groove 701 to guarantee that arc through-groove 1102 can only be linked together with a cylindrical groove 701. The upper and lower sides of the rear end of the fixed disk 11 are fixedly connected with a connecting rod 12 on the shell 1, the rear end of the fixed disk 11 is communicated with an arc-shaped through groove 1102 to be fixedly connected with an air pipe 13, and the lower end of the air pipe 13 is fixedly connected with a collecting box 14.
The inside of shell 1 and sliding connection has L type pole 15 in arc wall 101, and the front end fixedly connected with cutting frame 16 of L type pole 15, the upper portion of arc wall 101 is horizontal spout, and keeps the level with the protecting band 4 thereon, and the lower part of arc wall 101 is the arc and corresponding with the position of first fixed column 102 and second fixed column 103 to guarantee that cutting frame 16 is at the upper portion horizontal migration of arc wall 101, further guarantee that the cutting of protecting band 4 is stable. The cutting frame 16 is a cavity inside and is communicated with the air pipe 13; the upper part of the cutting frame 16 is provided with a cutting through hole corresponding to the cylindrical knife 9. The lower part of the L-shaped rod 15 is fixedly connected with a second spring 17 and a third spring 18 respectively between the first fixing column 102 and the second fixing column 103, the second spring 17 is a compression spring, the third spring 18 is an extension spring, and the second spring 17 and the third spring 18 are connected, so that the intermittent movement of the cutting frame 16 is ensured. The rear left end of L type pole 15 and fixedly connected with piston 19 in rectangular channel 104, the middle part of trachea 13 and fixedly connected with gasbag 20 in spherical groove 105, arc leads to groove 1102 right-hand member and the central axis of through-hole 1101 is corresponding, thereby when guaranteeing that cylindricality sword 9 cutting protecting band 4 reachs the maximum depth of cut, arc leads to groove 1102 and cylindricality groove 701 intercommunication, at this moment, the gaseous waste material in with cylindricality sword 9 of passing through trachea 13 in the gasbag 20 blows to collection box 14, trachea 13 all is provided with the check valve between the upper portion of rectangular channel 104 and gasbag 20, thereby guarantee that the folk prescription blows in gasbag 20.
The working principle is as follows: this handle guard band perforating device of racket, at the during operation, it removes in backup pad 5 to drive guard band 4 through take-up drum 3, drive shaft 6 drives cylinder 7 simultaneously and rotates, cylinder 7 drives cylindricality sword 9 and rotates, cylindricality sword 9 extrudees and cuts it with guard band 4, and simultaneously, cylindricality sword 9 extrudees through slider 8 extrusion first spring 10, at this moment, cylinder 7 and guard band 4 pressfitting mutually, this structure has not only reached the purpose that lasts cutting guard band 4, and can extrude fixedly to the guard band, first spring 10 cushions the cutting of cylindricality sword 9 simultaneously, thereby further reduce the wearing and tearing of cylindricality sword 9.
The cylindrical knife 9 is in contact with the cutting frame 16, the cylindrical knife 9 drives the cutting frame 16 and the L-shaped rod 15 on the right side of the cutting frame to slide along the arc-shaped groove 101, when the cutting frame 16 and the L-shaped rod 15 are not cut, the cutting frame 16 and the L-shaped rod 15 stay at the upper end of the right side of the arc-shaped groove 101 under the pushing of the second spring 17 and the tensioning of the third spring 18, when the cylindrical knife 9 drives the cutting frame 16 and the L-shaped rod 15 to move to the left end of the arc-shaped groove 101, due to the fact that the third spring 18 is large in stretching degree, the third spring 18 pulls the cutting frame 16 and the L-shaped rod 15 to move towards the lower portion of the arc-shaped groove 101, and the second spring 17 is extruded to move to the right side of the arc-shaped groove 101 to reset under the inertial movement of the cutting frame 16 and the L-shaped rod 15, the structure achieves the purpose of relative movement of the cutting frame 16 and the cylindrical knife 9, cutting of the, The working strength is high.
The waste material in the cylindrical knife 9 is blown into the collection box 14 through the air pipe 13 by the air in the air bag 20, and the air pipe 13 is provided with a one-way valve at the upper part of the rectangular groove 104 and between the rectangular groove 104 and the air bag 20, thereby ensuring that the air in the air bag 20 blows in one direction.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a handle guard band perforating device of racket, includes shell (1), its characterized in that: the housing (1) comprises: the device comprises an arc-shaped groove (101), a first fixing column (102), a second fixing column (103), a rectangular groove (104) and a spherical groove (105), wherein a supporting column (2) is fixedly connected to the left end of the lower side in the shell (1), a winding drum (3) is rotatably connected to the upper end of the supporting column (2), a protective belt (4) is rotatably connected to the outer side of the winding drum (3), a supporting plate (5) is fixedly connected to the inner side of the shell (1) and the upper portion of the protective belt (4) at the right side, a driving shaft (6) is rotatably connected to the inner side of the shell (1) and the upper portion of the supporting plate (5), a roller (7) is fixedly connected to the outer side of the driving shaft (6), cylindrical grooves (701) are formed around the outer side of the inner side of the roller (7), knife sliding grooves (702) are formed in the inner side of the roller (7) and in the knife sliding grooves (702), the equal fixedly connected with cylindricality sword (9) of outside end of slider (8), the lower extreme of slider (8) and the first spring (10) of inside fixedly connected with of cylinder (7), the rear end of cylinder (7) is rotated and is connected with fixed disk (11), and fixed disk (11) include: a through hole (1101) and an arc-shaped through groove (1102), connecting rods (12) are fixedly connected to the upper side and the lower side of the rear end of a fixed disc (11) and on a shell (1), an air pipe (13) is fixedly connected to the rear end of the fixed disc (11) and communicated with the arc-shaped through groove (1102), a collecting box (14) is fixedly connected to the lower end of the air pipe (13), an L-shaped rod (15) is slidably connected to the inner portion of the shell (1) in the arc-shaped groove (101), a cutting frame (16) is fixedly connected to the front end of the L-shaped rod (15), the lower portion of the L-shaped rod (15) is connected with a, a second spring (17) and a third spring (18) are respectively and fixedly connected between the second fixing columns (103), the left end of the rear part of the L-shaped rod (15) is fixedly connected with a piston (19) in a rectangular groove (104), and the middle part of the air pipe (13) is fixedly connected with an air bag (20) in a spherical groove (105).
2. The perforating device for the handle protective belt of the badminton racket as claimed in claim 1, wherein: the upper portion of arc wall (101) is horizontal spout, and keeps the level with protective band (4) on it, and the lower part of arc wall (101) is the arc and corresponds with the position of first fixed column (102) and second fixed column (103).
3. The perforating device for the handle protective belt of the badminton racket as claimed in claim 1, wherein: the length of the arc-shaped through groove (1102) is smaller than the distance between adjacent cylindrical grooves (701).
4. The perforating device for the handle protective belt of the badminton racket as claimed in claim 1, wherein: the right end of the arc-shaped through groove (1102) corresponds to the central axis of the through hole (1101).
5. The perforating device for the handle protective belt of the badminton racket as claimed in claim 1, wherein: the air pipe (13) is provided with check valves at the upper part of the rectangular groove (104) and between the rectangular groove (104) and the air bag (20).
6. The perforating device for the handle protective belt of the badminton racket as claimed in claim 1, wherein: the interior of the cutting frame (16) is a cavity and is communicated with the air pipe (13); the upper part of the cutting frame (16) is provided with a cutting through hole corresponding to the cylindrical knife (9).
7. The perforating device for the handle protective belt of the badminton racket as claimed in claim 1, wherein: the second spring (17) is a compression spring, and the third spring (18) is an extension spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010400055.7A CN111590680A (en) | 2020-05-13 | 2020-05-13 | Handle protective belt punching device of badminton racket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010400055.7A CN111590680A (en) | 2020-05-13 | 2020-05-13 | Handle protective belt punching device of badminton racket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111590680A true CN111590680A (en) | 2020-08-28 |
Family
ID=72187247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010400055.7A Pending CN111590680A (en) | 2020-05-13 | 2020-05-13 | Handle protective belt punching device of badminton racket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111590680A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107116607A (en) * | 2016-02-24 | 2017-09-01 | 张生兰 | One kind cross cutting waste clearing equipment and stripping method |
| CN207858966U (en) * | 2018-02-08 | 2018-09-14 | 东莞市超强运动器材有限公司 | A kind of efficient puncher of racket leather for use on handle processing |
| CN109465896A (en) * | 2018-11-15 | 2019-03-15 | 昆山上艺电子有限公司 | A kind of air blowing discharge device and its working method |
| JPWO2018051722A1 (en) * | 2016-09-14 | 2019-06-24 | 吉野石膏株式会社 | Cutting device, manufacturing device for sheet member, manufacturing device for gypsum building material |
| CN209466323U (en) * | 2018-11-27 | 2019-10-08 | 铜陵天天纸品科技有限公司 | The perforating device of roll paper |
-
2020
- 2020-05-13 CN CN202010400055.7A patent/CN111590680A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107116607A (en) * | 2016-02-24 | 2017-09-01 | 张生兰 | One kind cross cutting waste clearing equipment and stripping method |
| JPWO2018051722A1 (en) * | 2016-09-14 | 2019-06-24 | 吉野石膏株式会社 | Cutting device, manufacturing device for sheet member, manufacturing device for gypsum building material |
| CN207858966U (en) * | 2018-02-08 | 2018-09-14 | 东莞市超强运动器材有限公司 | A kind of efficient puncher of racket leather for use on handle processing |
| CN109465896A (en) * | 2018-11-15 | 2019-03-15 | 昆山上艺电子有限公司 | A kind of air blowing discharge device and its working method |
| CN209466323U (en) * | 2018-11-27 | 2019-10-08 | 铜陵天天纸品科技有限公司 | The perforating device of roll paper |
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Application publication date: 20200828 |
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| RJ01 | Rejection of invention patent application after publication |