CN110539357A - variable stress point's mechanism that pushes down - Google Patents
variable stress point's mechanism that pushes down Download PDFInfo
- Publication number
- CN110539357A CN110539357A CN201910839984.5A CN201910839984A CN110539357A CN 110539357 A CN110539357 A CN 110539357A CN 201910839984 A CN201910839984 A CN 201910839984A CN 110539357 A CN110539357 A CN 110539357A
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- Prior art keywords
- pressing
- rotating shaft
- guide
- rod
- pushing
- Prior art date
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- 230000007246 mechanism Effects 0.000 title claims abstract description 50
- 238000003825 pressing Methods 0.000 claims abstract description 122
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000000881 depressing effect Effects 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 abstract description 11
- 230000008859 change Effects 0.000 abstract description 3
- 238000004080 punching Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/08—Means for actuating the cutting member to effect the cut
- B26D5/10—Hand or foot actuated means
-
- 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
-
- 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
- B26F1/16—Perforating by tool or tools of the drill type
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Abstract
the invention relates to a pressing mechanism with a variable stress point, which comprises a supporting arm, a pressing mechanism and a pressing driving mechanism; the supporting arm is provided with a vertical guiding groove, a first guiding chute and a second guiding chute; the pushing mechanism comprises a pushing slide rod, a pushing cross rod, a reset spring and two pushing arms, the pushing slide rod is positioned in the supporting arm, the pushing cross rod is connected to the middle of the pushing slide rod, the pushing arms are provided with pushing chutes, the two pushing arms are arranged on the outer side of the supporting arm, two ends of the two pushing arms are connected with each other through a first rotating shaft and a second rotating shaft, the first rotating shaft is positioned in the first guide chute, the second rotating shaft is positioned in the second guide chute, two ends of the pushing cross rod are positioned in the pushing chutes, and the first rotating shaft is connected with the pushing driving mechanism. The lever stress point of the pressing mechanism is variable in the pressing process, the lever ratio can be changed along with the change of the pressing stroke, the force required to be applied in pressing is gradually reduced, the labor intensity of operators can be effectively reduced, and the practicability is high.
Description
Technical Field
The invention belongs to the technical field of curtain processing, relates to curtain ring hole punching equipment, and particularly relates to a pressing mechanism of a pressing plate of a curtain Roman ring hole punching machine.
Background
When the curtain is processed, the curtain fabric is usually processed into a finished curtain by punching a circle of holes and then pressing roman circles on the curtain fabric with the circle of holes. For a long time, the window curtain cloth is punched by using scissors for manual operation, the size and the opening size of the window curtain cloth are firstly calculated, then circles are drawn on corresponding positions of the opening, the lower semicircle is cut after the folding, and the circular hole is formed after the unfolding.
With the development of technology, some hand-press type curtain punching machines appear on the world, the hand-press type curtain punching machines utilize the principle of a fixed lever to press down a pressure plate through a hand-press handle, but the lever ratio of the hand-press type curtain punching machines is a fixed value or a simple rigid structure change value, the function of pressing down the pressure plate can be only met in the using process, the pressing-down driving force and the pressing-down stroke are not optimized better, and the operation is laborious.
disclosure of Invention
The invention aims to provide a variable stress point pressing mechanism, the stress point of a lever of the pressing mechanism is variable in the pressing process, the lever ratio can be changed along with the change of a pressing stroke, the force required to be applied in pressing is gradually reduced, the operation is labor-saving, and the problems in the background technology are effectively solved.
the technical scheme adopted by the invention for realizing the purpose is as follows: a pressing mechanism with variable stress points comprises a supporting arm, a pressing mechanism and a pressing driving mechanism; the supporting arm is of a hollow structure and comprises an upright post and a cantilever vertically connected to the upper end of the upright post;
The side walls of the two sides of the cantilever are symmetrically provided with a vertical guide groove, a first guide sliding groove and a second guide sliding groove, the vertical guide groove is arranged along the vertical direction, the first guide sliding groove and the second guide sliding groove are respectively arranged on the two sides of the vertical guide groove, the first guide sliding groove is arc-shaped and gradually gets away from the vertical guide groove from top to bottom and then gradually gets close to the vertical guide groove; the second guide sliding groove is obliquely arranged from top to bottom, and the lower end of the second guide sliding groove is gradually close to the lower end of the vertical guide groove;
the pressing mechanism comprises a pressing slide rod, a pressing cross rod, a return spring and two pressing arms, the pressing slide rod is positioned in the cavity of the cantilever in a sliding mode along the vertical direction, two ends of the pressing slide rod penetrate through the upper end face and the lower end face of the cantilever respectively, and the lower end of the pressing slide rod is further connected with a pressing plate; the lower pressing cross rod is vertically connected to the middle part of the lower pressing slide rod, and two ends of the lower pressing cross rod are respectively positioned in the guide vertical grooves and extend to the outer side of the cantilever; the reset spring is sleeved on the outer side of the downward pressing slide rod and is positioned between the downward pressing cross rod and the inner wall of the bottom of the cantilever; the middle parts of the lower pressure arms are provided with lower pressure chutes, the two lower pressure arms are respectively and symmetrically arranged at the outer sides of the cantilever, the two ends of the two lower pressure arms are respectively connected with each other through a first rotating shaft and a second rotating shaft, the first rotating shaft is positioned in the first guide chute in a sliding manner, the second rotating shaft is positioned in the second guide chute in a sliding manner, and the two ends of the lower pressure cross rod are respectively positioned in the lower pressure chutes of the corresponding lower pressure arms in a sliding manner; the middle part of the first rotating shaft is connected with a downward pressing driving mechanism, the downward pressing driving mechanism drives the first rotating shaft to move downwards, and the downward pressing cross rod moves downwards along the guide vertical groove under the lever action of the downward pressing arm so as to drive the downward pressing slide rod to move downwards.
the further technical scheme of the invention is as follows: and rolling bearings are respectively arranged at the sliding connection part of the outer side of the first rotating shaft and the first guide sliding chute, the sliding connection part of the outer side of the second rotating shaft and the second guide sliding chute, and the sliding connection part of the outer side of the lower cross rod and the lower sliding chute.
The further technical scheme of the invention is as follows: the pressing-down driving mechanism is a manual pressing-down mechanism and comprises a pressing-down handle, a driving rotating shaft, a first linkage rod and a second linkage rod, the driving rotating shaft horizontally penetrates through the side wall of the cantilever, the pressing-down handle is vertically connected with one end of the driving rotating shaft, one end of the first linkage rod is fixedly connected with the driving rotating shaft, one end, far away from the driving rotating shaft, of the first linkage rod is hinged with the second linkage rod, and one end, far away from the first linkage rod, of the second linkage rod is hinged with the middle part of the first rotating shaft; the pressing handle can be pressed to drive the driving rotating shaft to rotate, and the driving rotating shaft drives the first rotating shaft to move downwards through the first linkage rod and the second linkage rod.
The other technical scheme of the invention is as follows: the pressing driving mechanism is a pedal pressing mechanism and comprises a pedal device, a cable assembly and a roller wheel, the roller wheel is positioned in the inner cavity of the supporting arm through a positioning rotating shaft, and the roller wheel is positioned below one side of the first guide sliding groove, which is far away from the guide vertical groove; the cable assembly is connected with the pedal device, the cable sheath far away from one end of the pedal device is fixedly connected with the side wall of the upright column, the cable core far away from one end of the pedal device is connected with the middle part of the first rotating shaft after bypassing the lower side of the roller and extending upwards, and the first rotating shaft can be driven to move downwards by the pedal device to pull the cable core.
The pressing mechanism with the variable stress point has the following beneficial effects due to the adoption of the scheme:
1. The design of the pressing mechanism with the variable stress point is ingenious, when a first rotating shaft drives a pressing arm to move downwards along a first guide sliding groove, the other end of the pressing arm rotates around a second rotating shaft, and a pressing cross rod positioned in the pressing sliding groove moves downwards along a guide vertical groove under the lever action of the pressing arm, so that a pressing slide rod and a pressing plate are driven to move downwards; in the process that the first rotating shaft moves downwards along the first guide sliding groove, the first rotating shaft is gradually far away from the pressing cross rod, and the second rotating shaft slides towards one side of the pressing cross rod along the second guide sliding groove, namely, in the process, the lever ratio of the pressing arm is increased sharply, so that the force required to be applied by the pressing driving mechanism when the pressing slide rod and the pressing plate are driven to press downwards is gradually reduced, and the labor intensity of operators can be effectively reduced;
2. According to the invention, the rolling bearings are arranged at the sliding connection positions of the first rotating shaft, the second rotating shaft and the lower pressing cross rod, so that the starting is smooth and the resistance is small in the relative movement process of each sliding part, and the operation of equipment is more labor-saving;
3. The structure of the invention is not complex, so the processing technology is simple, the manufacturing cost is low, and the practicability is higher.
the present invention will be further described with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a variable force point depressing mechanism of the present invention;
FIG. 2 is a schematic structural diagram of another embodiment of the present invention;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a front view of the cantilever;
FIG. 5 is a schematic diagram of the internal structure of the first embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a second embodiment of a variable force point depressing mechanism of the present invention;
FIG. 7 is a front view of FIG. 6;
FIG. 8 is a schematic view showing the structure in which the push-down slide bar is pushed to the bottom end;
The reference numbers illustrate: 1-supporting arm, 11-upright post, 12-cantilever, 121-guide vertical slot, 122-second guide sliding slot, 123-first guide sliding slot, 21-downward slide bar, 22-downward cross bar, 23-downward arm, 231-downward sliding slot, 24-second rotating shaft, 25-first rotating shaft, 26-reset spring, 3-pressing plate, 41-downward handle, 42-driving rotating shaft, 43-first linkage rod, 44-second linkage rod, 51-pedal device, 52-inhaul cable assembly, 521-inhaul cable sheath, 522-inhaul cable core, 53-positioning rotating shaft, 54-roller and 6-rolling bearing.
Detailed Description
the first embodiment is as follows:
As shown in fig. 1 to 5, the pressing mechanism with variable stress points of the present invention comprises a supporting arm 1, a pressing mechanism and a pressing driving mechanism; the support arm 1 is of a hollow structure, and the support arm 1 comprises a vertical column 11 and a cantilever 12 vertically connected to the upper end of the vertical column 11.
The side walls of the two sides of the cantilever 12 are symmetrically provided with a vertical guide groove 121, a first guide sliding groove 123 and a second guide sliding groove 122, the vertical guide groove 121 is arranged along the vertical direction, the first guide sliding groove 123 and the second guide sliding groove 122 are respectively arranged on the two sides of the vertical guide groove 121, the first guide sliding groove 123 is arc-shaped and gradually gets away from the vertical guide groove 121 from top to bottom and then gradually gets close to the vertical guide groove 121; the second guide sliding groove 122 is inclined from top to bottom, and the lower end of the second guide sliding groove 122 is gradually close to the lower end of the vertical guide groove 121.
The downward pressing mechanism comprises a downward pressing slide rod 21, a downward pressing cross rod 22, a return spring 26 and two downward pressing arms 23, the downward pressing slide rod 21 is positioned in the cavity of the cantilever 12 in a sliding mode along the vertical direction, two ends of the downward pressing slide rod 21 penetrate through the upper end face and the lower end face of the cantilever 12 respectively, and the lower end of the downward pressing slide rod 21 is further connected with a pressing plate 3; the lower pressing cross bar 22 is vertically connected to the middle part of the lower pressing slide bar 21, and two ends of the lower pressing cross bar 22 are respectively positioned in the guide vertical grooves 121 and extend to the outer side of the cantilever 12; the return spring 26 is sleeved outside the lower press slide bar 21 and is positioned between the lower press cross bar 22 and the inner wall of the bottom of the cantilever 12; the middle of the lower pressing arm 23 is provided with a lower pressing sliding groove 231, the two lower pressing arms 23 are respectively and symmetrically arranged on the outer side of the cantilever 12, two ends of the two lower pressing arms 23 are respectively connected with each other through a first rotating shaft 25 and a second rotating shaft 24, the first rotating shaft 25 is slidably positioned in the first guide sliding groove 123, the second rotating shaft 24 is slidably positioned in the second guide sliding groove 122, two ends of the lower pressing cross rod 22 are respectively slidably positioned in the lower pressing sliding grooves 231 of the corresponding lower pressing arms 23, and the middle of the first rotating shaft 25 is connected with a lower pressing driving mechanism.
In this embodiment, the pressing-down driving mechanism is a manual pressing-down mechanism, and includes a pressing-down handle 41, a driving rotating shaft 42, a first linkage rod 43 and a second linkage rod 44, the driving rotating shaft 42 horizontally passes through the side wall of the cantilever 12, the pressing-down handle 41 is vertically connected with one end of the driving rotating shaft 42, one end of the first linkage rod 43 is fixedly connected with the driving rotating shaft 42, one end of the first linkage rod 43, which is far away from the driving rotating shaft 42, is hinged to the second linkage rod 44, and one end of the second linkage rod 44, which is far away from the first linkage rod 43, is hinged to the middle of the first rotating shaft 25; the driving shaft 42 can be driven to rotate by pressing the pressing handle 41, the driving shaft 42 drives the first shaft 25 to move downwards through the first linkage rod 43 and the second linkage rod 44, and the pressing cross rod 22 moves downwards along the guide vertical slot 121 under the lever action of the pressing arm 23, so as to drive the pressing slide rod 21 to move downwards.
Example two:
As shown in fig. 6 and 7, in the present embodiment, the pressing-down driving mechanism is a pedal pressing-down mechanism, and includes a pedal device 51, a cable assembly 52 and a roller 54, the roller 54 is positioned in the inner cavity of the support arm 1 through a positioning rotating shaft 53, and the roller 54 is located below the side of the first guide sliding groove 123 away from the guide vertical groove 121; one end of the cable assembly 52 is connected with the pedal device 51, a cable sheath 521 at one end of the cable assembly 52 far away from the pedal device 51 is fixedly connected with the side wall of the upright post 11, a cable core 522 at one end of the cable assembly 52 far away from the pedal device 51 bypasses the lower side of the roller 54, extends upwards and then is connected with the middle part of the first rotating shaft 25, and the first rotating shaft 25 can be driven to move downwards by pulling the cable core 522 through the pedal device 51. In the present embodiment, the pedal device 51 is a prior art device, and will not be described in detail herein; in addition, in this embodiment, other parts are the same as those of the first embodiment except for the pressing drive mechanism, and a description thereof will not be repeated.
the working principle of the invention is as follows:
when the pressing handle 41 or the pedal device 51 drives the first rotating shaft 25 to move downwards through the corresponding connecting part, in the early stage of the downward movement of the first rotating shaft 25, the pressing arm 23 rotates around the second rotating shaft 24, and the pressing cross bar 22 positioned in the pressing chute 231 of the pressing arm 23 moves downwards along the guide vertical slot 121 under the lever action of the pressing arm 23, so as to drive the pressing slide bar 21 and the pressing plate 3 to move downwards; in the process that the first rotating shaft 25 continues to move downwards along the first guide sliding groove 123, the second rotating shaft 24 also slides downwards along the second guide sliding groove 122, and the press-down cross bar 22 serves as a force-bearing point of a lever, which moves in the press-down sliding groove 231 along with the downward movement of the first rotating shaft 25, as can be seen from fig. 8, in the process, the first rotating shaft 25 is gradually away from the press-down cross bar 22, that is, in the process, the lever ratio of the press-down arm 23 is gradually increased, and as the second rotating shaft 24 slides along the second guide sliding groove 122 towards the side of the press-down cross bar 22, the lever ratio is increased more obviously, so that the force required to be applied by the press-down driving mechanism when the press-down slide bar 21 and the press plate 3 are pressed downwards is gradually reduced, the operation of the whole process is gentle and excessive, the effective work distance is ensured, and the labor-saving effect when the force is applied is achieved, the labor intensity of operators can be effectively reduced.
In addition, the sliding connection part between the outer side of the first rotating shaft 25 and the first guide sliding groove 123, the sliding connection part between the outer side of the second rotating shaft 24 and the second guide sliding groove 122, and the sliding connection part between the outer side of the lower cross bar 22 and the lower sliding groove 231 are respectively provided with the rolling bearings 6, and the rolling bearings 6 are arranged at the sliding connection parts, so that the starting of the sliding parts in the relative movement process is smooth, the resistance is small, and the operation of the equipment is more labor-saving.
The above embodiments are only preferred embodiments of the present invention, and the structure of the present invention is not limited to the forms of the above embodiments, and any modifications, equivalents and the like within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A pressing mechanism with variable stress points comprises a supporting arm (1), a pressing mechanism and a pressing driving mechanism; the supporting arm (1) is of a hollow structure, and the supporting arm (1) comprises an upright post (11) and a cantilever (12) vertically connected to the upper end of the upright post (11); the method is characterized in that:
The side walls of two sides of the cantilever (12) are symmetrically provided with a vertical guide groove (121), a first guide sliding groove (123) and a second guide sliding groove (122), the vertical guide groove (121) is arranged along the vertical direction, the first guide sliding groove (123) and the second guide sliding groove (122) are respectively arranged on two sides of the vertical guide groove (121), the first guide sliding groove (123) is arc-shaped and gradually gets away from the vertical guide groove (121) from top to bottom and then gradually gets close to the vertical guide groove (121); the second guide sliding chute (122) is obliquely arranged from top to bottom, and the lower end of the second guide sliding chute (122) is gradually close to the lower end of the guide vertical chute (121);
the downward pressing mechanism comprises a downward pressing slide rod (21), a downward pressing cross rod (22), a return spring (26) and two downward pressing arms (23), the downward pressing slide rod (21) is positioned in a cavity of the cantilever (12) in a sliding mode along the vertical direction, two ends of the downward pressing slide rod (21) penetrate through the upper end face and the lower end face of the cantilever (12) respectively, and the lower end of the downward pressing slide rod (21) is further connected with a pressing plate (3); the lower pressing cross rod (22) is vertically connected to the middle of the lower pressing sliding rod (21), and two ends of the lower pressing cross rod (22) are respectively positioned in the guide vertical groove (121) and extend to the outer side of the cantilever (12); the reset spring (26) is sleeved on the outer side of the downward pressing sliding rod (21) and is positioned between the downward pressing cross rod (22) and the inner wall of the bottom of the cantilever (12); the middle of each lower pressing arm (23) is provided with a lower pressing chute (231), the two lower pressing arms (23) are symmetrically arranged on the outer side of the cantilever (12) respectively, two ends of each lower pressing arm (23) are connected with each other through a first rotating shaft (25) and a second rotating shaft (24), the first rotating shaft (25) is positioned in the first guide chute (123) in a sliding manner, the second rotating shaft (24) is positioned in the second guide chute (122) in a sliding manner, and two ends of each lower pressing cross rod (22) are positioned in the corresponding lower pressing chutes (231) of the lower pressing arms (23) in a sliding manner respectively; the middle part of the first rotating shaft (25) is connected with a pressing driving mechanism, the pressing driving mechanism drives the first rotating shaft (25) to move downwards, and the pressing cross rod (22) moves downwards along the guide vertical groove (121) under the lever action of the pressing arm (23), so that the pressing slide rod (21) is driven to move downwards.
2. The variable force point depressing mechanism according to claim 1, wherein rolling bearings (6) are respectively provided at the sliding connection between the outer side of the first rotating shaft (25) and the first guide sliding groove (123), the sliding connection between the outer side of the second rotating shaft (24) and the second guide sliding groove (122), and the sliding connection between the outer side of the depressing crossbar (22) and the depressing sliding groove (231).
3. The variable stress point pushing mechanism according to claim 1, wherein the pushing driving mechanism is a manual pushing mechanism and comprises a pushing handle (41), a driving rotating shaft (42), a first linkage rod (43) and a second linkage rod (44), the driving rotating shaft (42) horizontally penetrates through the side wall of the cantilever (12), the pushing handle (41) is vertically connected with one end of the driving rotating shaft (42), one end of the first linkage rod (43) is fixedly connected with the driving rotating shaft (42), one end of the first linkage rod (43) far away from the driving rotating shaft (42) is hinged to the second linkage rod (44), and one end of the second linkage rod (44) far away from the first linkage rod (43) is hinged to the middle part of the first rotating shaft (25); the pressing handle (41) is pressed to drive the driving rotating shaft (42) to rotate, and the driving rotating shaft (42) drives the first rotating shaft (25) to move downwards through the first linkage rod (43) and the second linkage rod (44).
4. a variable force point depressing mechanism according to claim 1, wherein the depressing drive mechanism is a pedal depressing mechanism comprising a pedal device (51), a cable assembly (52) and a roller (54), the roller (54) is positioned in the inner cavity of the support arm (1) through a positioning rotating shaft (53), and the roller (54) is positioned below the side of the first guide sliding groove (123) far away from the guide vertical groove (121); one end of the inhaul cable assembly (52) is connected with the pedal device (51), an inhaul cable sheath (521) at one end, far away from the pedal device (51), of the inhaul cable assembly (52) is fixedly connected with the side wall of the upright post (11), an inhaul cable core (522) at one end, far away from the pedal device (51), of the inhaul cable assembly (52) bypasses the lower side of the roller (54) and extends upwards to be connected with the middle of the first rotating shaft (25), and the first rotating shaft (25) can be driven to move downwards by pulling the inhaul cable core (522) through the pedal device (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910839984.5A CN110539357B (en) | 2019-09-06 | 2019-09-06 | Pressing mechanism with variable stress point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910839984.5A CN110539357B (en) | 2019-09-06 | 2019-09-06 | Pressing mechanism with variable stress point |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110539357A true CN110539357A (en) | 2019-12-06 |
| CN110539357B CN110539357B (en) | 2024-09-17 |
Family
ID=68712817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910839984.5A Active CN110539357B (en) | 2019-09-06 | 2019-09-06 | Pressing mechanism with variable stress point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110539357B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5245902A (en) * | 1993-02-12 | 1993-09-21 | Camilo Pereira | Vegetable cutter |
| CN101121270A (en) * | 2006-08-11 | 2008-02-13 | 上海坚明办公用品有限公司 | Punch |
| CA2572692A1 (en) * | 2007-01-02 | 2008-07-02 | Sdi Corporation | Laborsaving hole puncher |
| CN101274437A (en) * | 2007-03-30 | 2008-10-01 | 普乐士文具株式会社 | Hole-piercing punch |
| CN202225168U (en) * | 2011-07-22 | 2012-05-23 | 三木控股集团有限公司 | Labor-saving stapler |
| CN206598334U (en) * | 2017-03-20 | 2017-10-31 | 杜朋辉 | Two-purpose curtain puncher |
| CN207344706U (en) * | 2017-10-25 | 2018-05-11 | 郑博文 | A kind of linkage of paper puncher |
| CN208005825U (en) * | 2018-03-14 | 2018-10-26 | 得力集团有限公司 | A kind of labor-saving hole-punching machine |
| CN210551754U (en) * | 2019-09-06 | 2020-05-19 | 柳州市朗捷机电设备有限责任公司 | Variable stress point's mechanism that pushes down |
-
2019
- 2019-09-06 CN CN201910839984.5A patent/CN110539357B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5245902A (en) * | 1993-02-12 | 1993-09-21 | Camilo Pereira | Vegetable cutter |
| CN101121270A (en) * | 2006-08-11 | 2008-02-13 | 上海坚明办公用品有限公司 | Punch |
| CA2572692A1 (en) * | 2007-01-02 | 2008-07-02 | Sdi Corporation | Laborsaving hole puncher |
| CN101274437A (en) * | 2007-03-30 | 2008-10-01 | 普乐士文具株式会社 | Hole-piercing punch |
| CN202225168U (en) * | 2011-07-22 | 2012-05-23 | 三木控股集团有限公司 | Labor-saving stapler |
| CN206598334U (en) * | 2017-03-20 | 2017-10-31 | 杜朋辉 | Two-purpose curtain puncher |
| CN207344706U (en) * | 2017-10-25 | 2018-05-11 | 郑博文 | A kind of linkage of paper puncher |
| CN208005825U (en) * | 2018-03-14 | 2018-10-26 | 得力集团有限公司 | A kind of labor-saving hole-punching machine |
| CN210551754U (en) * | 2019-09-06 | 2020-05-19 | 柳州市朗捷机电设备有限责任公司 | Variable stress point's mechanism that pushes down |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110539357B (en) | 2024-09-17 |
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