CN110370373B - Accounting document drilling machine - Google Patents
Accounting document drilling machine Download PDFInfo
- Publication number
- CN110370373B CN110370373B CN201910659598.8A CN201910659598A CN110370373B CN 110370373 B CN110370373 B CN 110370373B CN 201910659598 A CN201910659598 A CN 201910659598A CN 110370373 B CN110370373 B CN 110370373B
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- drilling
- lifting driving
- driving cylinder
- connecting plate
- rod
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- 238000005553 drilling Methods 0.000 title claims abstract description 117
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 238000001179 sorption measurement Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 208000014674 injury Diseases 0.000 abstract 1
- 239000010893 paper waste Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Classifications
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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
- 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
- B26D5/086—Electric, magnetic, piezoelectric, electro-magnetic means
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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
- B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
-
- 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
- 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
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2614—Means for mounting the cutting member
-
- 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
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2628—Means for adjusting the position of the cutting member
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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
- B26F1/16—Perforating by tool or tools of the drill type
Abstract
The invention relates to the technical field of office equipment, and discloses an accounting document drilling machine, wherein when drilling, a drilling part is compressed by a compression sleeve, and then drilling is carried out, so that the problems of tearing of documents at the drilling part, deformation at the drilling part and the like can be effectively prevented, meanwhile, an outer protective cylinder is arranged, on one hand, a drilling knife can be protected, and the error injury to operators can be prevented, on the other hand, when drilling, a lifting driving cylinder drives the drilling knife to rotate and move up and down at the same time, so that automatic drilling is realized, in addition, paper scraps can be sucked out by using negative pressure when drilling, the condition that the paper scraps block the drill bit to damage the documents can be prevented, and the drilling knife is a cylindrical thin-wall structure, the paper scraps are directly sucked out from the center according to the cut shape, so that the drilling knife is simple, is convenient.
Description
Technical Field
The invention relates to the technical field of office equipment, in particular to an accounting document drilling machine.
Background
At present, there are multiple accounting document drilling machines in the market, but ordinary drilling machine is when driling to the document, if improper operation, appears the document deformation very easily, appears torn problem even, leads to the damage of file, and in addition, ordinary brill is established equipment and is being bored when establishing the document, appears wastepaper card paper scheduling problem very easily, leads to the phenomenon of rubbing to appear in drilling department, influences drilling efficiency and aesthetic measure, can appear the problem that the document damaged even.
Therefore, the present invention provides an accounting document drilling machine to solve the above problems in the background art.
Disclosure of Invention
The invention aims to provide an accounting document drilling machine to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an accounting document drilling machine comprises a drilling platform, a pressing mechanism and a drilling mechanism, wherein the pressing mechanism is arranged at the upper end of the drilling platform, a lifting assembly capable of horizontally and transversely sliding is arranged on one side of the drilling platform, and the drilling mechanism is arranged on the lifting assembly;
the drilling mechanism comprises a drilling motor, a driving rod, a lifting driving cylinder, a drilling knife and an outer protective cylinder, wherein the output end of the drilling motor is connected with the driving rod extending downwards;
the drilling motor drives the lifting driving barrel to rotate through the driving rod and simultaneously drives the lifting driving barrel to move up and down, and the lifting driving barrel drives the drilling knife to rotate and simultaneously move up and down;
and a pressing sleeve for pressing the part to be drilled is further arranged at the bottom of the outer protective cylinder.
Further, preferably, the drilling tool is a cylindrical tool with a thin-walled structure and an inner hole, the lower end of the drilling tool is provided with a cutting edge, the upper end of the drilling tool is detachably connected to the tool holder, and the tool holder is connected to the lower end of the lifting driving cylinder through a hollow seat.
Further, as preferred, be hollow structure in cutter holder and the hollow seat, just the hollow chamber of cutter holder is connected with outside negative pressure adsorption tube, the hollow chamber of cutter holder with bore the central hole intercommunication of establishing the sword, just the diameter size in hollow chamber is greater than central hole size, so that utilize negative pressure adsorption tube will bore the wastepaper of establishing and remove.
Further, as preferred, the fixed nut that is provided with on the upper portion inner wall of outer protective barrel, the outer peripheral face of lift driving barrel be provided with nut complex external screw thread, the actuating lever drive when lift driving barrel rotates, lift driving barrel is in can up-and-down motion under the threaded connection effect of nut, lift driving barrel with but axial relative movement's setting can not rotate relatively between the actuating lever.
Preferably, the inner wall of the lifting driving cylinder is provided with a plurality of radial sliding grooves, each radial sliding groove extends along the axial direction of the lifting driving cylinder and is distributed in a circumferential array mode, the outer circumferential surface of the driving rod is integrally provided with a radial sliding block matched with the radial sliding grooves, the radial sliding blocks are matched with the radial sliding grooves to slide relatively, and the radial sliding blocks are used for transmitting the rotating torque.
Further, preferably, a groove is formed in the middle of the top end of the drilling platform, the two sides of the top end of the drilling platform are both connected with a pressing mechanism, the lifting component comprises a first supporting rod and a second supporting rod, the rear side of the drilling platform is connected with the first supporting rod, a sliding groove is arranged in the middle of the rear side of the drilling platform, a sliding block is arranged at the bottom of the front side of the first supporting rod, the sliding block is matched with the sliding groove to slide, the bottom end of the inner wall of the first supporting rod is provided with a spring, the top end of the spring is connected with a second supporting rod, the bottom of the second supporting rod can be lifted and stretched into the first supporting rod, the top end of the second supporting rod is connected with a connecting plate, the front side of the top end of the connecting plate is provided with a motor box, the bottom of the inner wall of the motor box is provided with a drilling motor, and the bottom of the drilling motor is connected with a lifting driving cylinder.
Further, as preferred, hold-down mechanism includes the connecting block, the screw has been seted up on the top of connecting block, the inboard of screw is connected with the screw rod, the bottom of screw rod is connected with the clamp plate.
Further, as preferred, round holes have all been seted up to the top and the bottom of connecting plate, the lift actuating cylinder runs through in proper order in the inside at the round hole on connecting plate top and the round hole on connecting plate top, the connecting block is the component of L shape structure.
Further, as preferred, the top of connecting plate is provided with the briquetting far away from one side of motor box, and is provided with the skid resistant course on the briquetting.
Further, as preferred, the motor box is fixed the upper end of connecting plate, the lift actuating cylinder stretches out downwards the connecting plate setting, the top of outer protective barrel is fixed the bottom of connecting plate.
Compared with the prior art, the invention has the beneficial effects that:
(1) when the drilling tool is used for drilling, the drilling part is firstly pressed by the pressing sleeve, then the drilling is carried out, the problems of tearing and the like at the drilling part due to evidence can be effectively prevented, and the problems of deformation and the like at the drilling part are prevented;
(2) according to the invention, the first support rod can be conveniently moved left and right on the drilling platform through the sliding groove formed in the drilling platform and the sliding block arranged on the first support rod, so that the drilling motor can drive the drill rod and the conical cutter to perform drilling operation on different positions on the accounting document, the working efficiency of the accounting document drilling machine is improved, and the use of an operator is facilitated.
Drawings
FIG. 1 is a schematic structural diagram of an accounting document drilling machine;
FIG. 2 is a partial schematic view of a hold down mechanism in an accounting document boring machine;
FIG. 3 is a partial cross-sectional view of a drill mechanism in an accounting document boring machine;
fig. 4 is a partial sectional view of a first support bar, a second support bar and a drill floor in an accounting document drilling machine.
FIG. 5 is a schematic sectional view of the connection between the driving rod and the lifting driving cylinder of the accounting document drilling machine.
Detailed Description
Referring to fig. 1 to 5, in an embodiment of the present invention, an accounting document drilling machine includes a drilling platform 8, a pressing mechanism and a drilling mechanism, wherein the pressing mechanism is disposed at an upper end of the drilling platform, a lifting assembly capable of horizontally sliding in a transverse direction is disposed at one side of the drilling platform, and the drilling mechanism is disposed on the lifting assembly;
the drilling mechanism comprises a drilling motor 11, a driving rod 61, a lifting driving cylinder 10, a drilling knife 7 and an outer protection cylinder 60, wherein the output end of the drilling motor 11 is connected with the driving rod 61 extending downwards, the driving rod is connected into the lifting driving cylinder 10, the lower end of the lifting driving cylinder is detachably connected with the drilling knife 7, and the outer protection cylinder is coaxially sleeved outside the lifting driving cylinder and the drilling knife;
the drilling motor 11 drives the lifting driving cylinder to rotate through the driving rod and simultaneously drives the lifting driving cylinder to move up and down, and the lifting driving cylinder drives the drilling knife to rotate and simultaneously move up and down;
the bottom of the outer protective cylinder 60 is also provided with a pressing sleeve 64 for pressing the part to be drilled.
In this embodiment, the drilling tool is a cylindrical tool with a thin-wall structure having an inner hole, the lower end of the drilling tool 7 is provided with a cutting edge 65, the upper end of the drilling tool is detachably connected to a tool holder 63, and the tool holder 63 is connected to the lower end of the lifting driving cylinder 10 by a hollow seat 62.
In a preferred embodiment, the interior of the tool holder 63 and the hollow seat are hollow, and the hollow cavity of the tool holder is connected to an external negative pressure adsorption tube 66, the hollow cavity of the tool holder is communicated with the central inner hole of the drilling tool, and the diameter of the hollow cavity is larger than that of the central inner hole, so that the drilled paper scraps are adsorbed and removed by the negative pressure adsorption tube 66.
The outer protection barrel is characterized in that a nut 67 is fixedly arranged on the inner wall of the upper portion of the outer protection barrel, an outer peripheral face of the lifting driving barrel is provided with an external thread matched with the nut, the driving rod 61 drives the lifting driving barrel 10 to rotate, the lifting driving barrel can move up and down under the threaded connection effect of the nut, and the lifting driving barrel and the driving rod are arranged in a mode that relative rotation is not allowed but axial relative movement is allowed.
In the invention, a plurality of radial sliding grooves are arranged on the inner wall of the lifting driving cylinder, each radial sliding groove extends along the axial direction of the lifting driving cylinder and is distributed in a circumferential array, a radial sliding block 671 matched with the radial sliding grooves is integrally arranged on the outer peripheral surface of the driving rod, the radial sliding block and the radial sliding grooves are matched and relatively slide, and the radial sliding block is used for transmitting the rotation torque.
A groove 9 is arranged in the middle of the top end of the drilling platform 8, the two sides of the top end of the drilling platform 8 are both connected with a pressing mechanism 2, the lifting component comprises a first supporting rod 1 and a second supporting rod 3, the rear side of the drilling platform 8 is connected with the first supporting rod 1, a sliding groove 14 is arranged in the middle of the rear side of the drilling platform 8, a sliding block 13 is arranged at the bottom of the front side of the first supporting rod 1, the sliding block is matched with the sliding groove to slide, the bottom end of the inner wall of the first supporting rod 1 is provided with a spring 12, the top end of the spring 12 is connected with a second supporting rod 3, the bottom of the second supporting rod can extend into the first supporting rod in a lifting and telescopic way, the top end of the second support rod 3 is connected with a connecting plate 4, the front side of the top end of the connecting plate 4 is provided with a motor box 5, the bottom of the inner wall of the motor box 5 is provided with a drilling motor 11, and the bottom of the drilling motor 11 is connected with a lifting driving cylinder 10.
In addition, in this embodiment, the pressing mechanism 2 includes a connecting block 23, a screw hole 22 is opened at a top end of the connecting block 23, a screw rod 21 is connected to an inner side of the screw hole 22, and a pressing plate 24 is connected to a bottom end of the screw rod 21.
Round holes are formed in the top end and the bottom end of the connecting plate 4, the lifting driving cylinder 10 sequentially penetrates through the round holes in the top end of the connecting plate 4 and the round holes in the top end of the connecting plate 4, and the connecting block 23 is a component of an L-shaped structure. One side of the top end of the connecting plate 4, which is far away from the motor box 5, is provided with a pressing block, and an anti-skid layer is arranged on the pressing block.
The motor box is fixed the upper end of connecting plate 4, the lift actuating cylinder stretches out downwards the connecting plate sets up, the top of outer protective barrel is fixed the bottom of connecting plate.
When a plurality of accounting vouchers need to be drilled, firstly, the accounting vouchers are placed between a drilling platform 8 and a pressing plate 24, the screw rod 21 is rotated, the pressing plate 24 connected with the screw rod 21 moves downwards, so that the pressing plate 24 can press the accounting vouchers tightly, then a pressing sleeve 64 is pressed and positioned at a position to be drilled, a switch of a drilling motor 11 is turned on, the drilling motor 11 drives a lifting driving cylinder to move up and down through a driving rod, the lifting driving cylinder drives a drilling knife to move up and down while rotating, meanwhile, a negative pressure suction pipe 66 utilizes a negative pressure suction pump to draw out paper scraps, the problem of jamming of the drilling knife is prevented, the accounting vouchers on the drilling platform 8 are drilled quickly and reliably, the first support rod 1 is pushed left and right, and a sliding block 13 connected with the first support rod 1 slides in a sliding groove 14 formed in the drilling platform 8, therefore, the conical cutter 7 and the drill rod 6 can be conveniently moved, and the accounting documents on the drilling platform 8 can be conveniently drilled at different positions.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (5)
1. An accounting document drilling machine comprises a drilling platform (8), a pressing mechanism and a drilling mechanism, wherein the pressing mechanism is arranged at the upper end of the drilling platform, a lifting assembly capable of horizontally and transversely sliding is arranged on one side of the drilling platform, and the drilling mechanism is arranged on the lifting assembly; the drilling mechanism comprises a drilling motor (11), a driving rod (61), a lifting driving cylinder (10), a drilling cutter (7) and an outer protection cylinder (60), wherein the output end of the drilling motor (11) is connected with the driving rod (61) extending downwards, the driving rod is connected into the lifting driving cylinder (10), the lower end of the lifting driving cylinder is detachably connected with the drilling cutter (7), and the outer protection cylinder is coaxially sleeved outside the lifting driving cylinder and the drilling cutter; the drilling motor (11) drives the lifting driving cylinder to rotate through the driving rod and simultaneously drives the lifting driving cylinder to move up and down, and the lifting driving cylinder drives the drilling knife to rotate and simultaneously move up and down; the bottom of the outer protective cylinder (60) is also provided with a pressing sleeve (64) for pressing the part to be drilled;
the drilling tool is a cylindrical tool with a thin-wall structure and an inner hole, a cutting edge (65) is arranged at the lower end of the drilling tool (7), the upper end of the drilling tool is detachably connected to a tool holder (63), the tool holder (63) is connected to the lower end of the lifting driving barrel (10) through a hollow seat (62), the tool holder (63) and the hollow seat are of a hollow structure, a hollow cavity of the tool holder is connected with an external negative pressure adsorption pipe (66), the hollow cavity of the tool holder is communicated with a central inner hole of the drilling tool, and the diameter of the hollow cavity is larger than that of the central inner hole, so that drilled paper scraps are absorbed and removed through the negative pressure adsorption pipe (66);
a nut (67) is fixedly arranged on the inner wall of the upper part of the outer protective cylinder, an external thread matched with the nut is arranged on the peripheral surface of the lifting driving cylinder, when the driving rod (61) drives the lifting driving cylinder (10) to rotate, the lifting driving cylinder can move up and down under the threaded connection effect of the nut, and the lifting driving cylinder and the driving rod cannot rotate relatively but can move relatively in the axial direction;
the inner wall of the lifting driving cylinder is provided with a plurality of radial sliding chutes, the radial sliding chutes extend along the axial direction of the lifting driving cylinder and are distributed in a circumferential array mode, the outer peripheral surface of the driving rod is integrally provided with radial sliding blocks (671) matched with the radial sliding chutes, the radial sliding blocks and the radial sliding chutes are matched to slide relatively, and rotating torque is transmitted through the radial sliding blocks;
a groove (9) is formed in the middle of the top end of the drilling platform (8), the two sides of the top end of the drilling platform (8) are connected with a pressing mechanism (2), the lifting assembly comprises a first supporting rod (1) and a second supporting rod (3), the rear side of the drilling platform (8) is connected with the first supporting rod (1), a sliding groove (14) is formed in the middle of the rear side of the drilling platform (8), a sliding block (13) is installed at the bottom of the front side of the first supporting rod (1) and is matched with the sliding groove to slide, a spring (12) is installed at the bottom end of the inner wall of the first supporting rod (1), the top end of the spring (12) is connected with the second supporting rod (3), the bottom of the second supporting rod can be lifted and stretched into the first supporting rod, the top end of the second supporting rod (3) is connected with a connecting plate (4), and a motor box (5) is installed at the front side of the top end of the connecting plate, the bottom of the inner wall of the motor box (5) is provided with a drilling motor (11), and the bottom of the drilling motor (11) is connected with a lifting driving cylinder (10).
2. An accounting document drilling machine according to claim 1, wherein the pressing mechanism (2) comprises a connecting block (23), a screw hole (22) is formed in the top end of the connecting block (23), a screw rod (21) is connected to the inner side of the screw hole (22), and a pressing plate (24) is connected to the bottom end of the screw rod (21).
3. An accounting document drilling machine according to claim 2, wherein the top end and the bottom end of the connecting plate (4) are provided with circular holes, the lifting driving cylinder (10) sequentially penetrates through the circular holes at the top end of the connecting plate (4) and the circular holes at the top end of the connecting plate (4), and the connecting block (23) is a member with an L-shaped structure.
4. An accounting document drilling machine according to claim 1, wherein the top end of the connecting plate (4) is provided with a pressing block on the side away from the motor box (5), and the pressing block is provided with an anti-slip layer.
5. An accounting document drilling machine according to claim 1, wherein the motor box is fixed on the upper end of the connecting plate (4), the lifting driving cylinder extends downwards to the connecting plate, and the top of the outer protective cylinder is fixed on the bottom of the connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910659598.8A CN110370373B (en) | 2019-07-19 | 2019-07-19 | Accounting document drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910659598.8A CN110370373B (en) | 2019-07-19 | 2019-07-19 | Accounting document drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110370373A CN110370373A (en) | 2019-10-25 |
| CN110370373B true CN110370373B (en) | 2021-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910659598.8A Active CN110370373B (en) | 2019-07-19 | 2019-07-19 | Accounting document drilling machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN110370373B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618946A (en) * | 2020-06-04 | 2020-09-04 | 钱文 | Bill perforating device |
| CN112659248A (en) * | 2020-11-30 | 2021-04-16 | 广州国显科技有限公司 | Processing equipment |
| CN112536628A (en) * | 2020-12-28 | 2021-03-23 | 国网河北省电力有限公司电力科学研究院 | A trompil equipment for pipeline diversion for desulfurization treatment pond |
| CN114454258A (en) * | 2022-03-14 | 2022-05-10 | 安徽宝鸿新材料科技有限公司 | Perforating device for AGM partition production |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57201370U (en) * | 1981-06-18 | 1982-12-21 | ||
| TW448818U (en) * | 2000-02-25 | 2001-08-01 | Liou Shian Neng | Automatic washer feeder for nailing gun |
| CN202137797U (en) * | 2011-06-24 | 2012-02-08 | 河北汇金机电股份有限公司 | Hole drill mechanism provided with paper scrap automatic collection device |
| CN202556945U (en) * | 2012-04-07 | 2012-11-28 | 黄晓峰 | Bookbinding machine |
| US9403247B2 (en) * | 2013-03-13 | 2016-08-02 | Denso International America, Inc. | Screw tightening rubbish vacuum |
| CN207548915U (en) * | 2017-11-06 | 2018-06-29 | 湖南涉外经济学院 | A kind of accounting voucher puncher |
| CN208498002U (en) * | 2018-06-21 | 2019-02-15 | 重庆医药高等专科学校 | Accounting binding apparatus |
| CN208991809U (en) * | 2018-09-06 | 2019-06-18 | 温州市明洋管件制造有限公司 | A kind of pipe fitting perforating device of good positioning effect |
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2019
- 2019-07-19 CN CN201910659598.8A patent/CN110370373B/en active Active
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| CN110370373A (en) | 2019-10-25 |
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