CN110919730A - Mouse eyeball petal-shaped equal cutting device - Google Patents
Mouse eyeball petal-shaped equal cutting device Download PDFInfo
- Publication number
- CN110919730A CN110919730A CN201911152981.0A CN201911152981A CN110919730A CN 110919730 A CN110919730 A CN 110919730A CN 201911152981 A CN201911152981 A CN 201911152981A CN 110919730 A CN110919730 A CN 110919730A
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- Prior art keywords
- eyeball
- base
- cutting
- mouse
- cutter
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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
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
- B26D1/26—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut
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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
- B26D5/10—Hand or foot actuated 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
- B26D7/0006—Means for guiding the cutter
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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
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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
- B26D7/2628—Means for adjusting the position of the cutting member
Abstract
The invention provides a petaloid halving cutting device for a mouse eyeball, which comprises a base, a cutter positioning mechanism, a cutter and an eyeball cutting base, wherein the cutter positioning mechanism is arranged on the base; the cutter comprises a cutter bar, and a positioning needle head is arranged at the bottom end of the cutter bar; four symmetrical and vertically arranged clamping grooves are formed in the side wall of the cutter bar above the positioning needle head, a blade is installed in each clamping groove, and the bottom end of each blade is rotatably installed at the bottom end of each clamping groove; the cutting edge of the blade is exposed outside the clamping groove, and the back of the blade is embedded in the clamping groove; a limiting block is arranged on the vertical fixing column, the rotating cap rotates to a limit position state in contact with the limiting block, the positioning needle head is located right above the positioning hole, and the positions of the four blades and the four cutting grooves are in one-to-one correspondence and are located in the same vertical plane respectively. This device is special to mouse eyeball design, can accurately be continuous for petaloid and bottom with mouse eyeball cutting, accords with follow-up experiment demand completely, simultaneously greatly reduced the operation degree of difficulty of cutting.
Description
Technical Field
The invention belongs to the field of experimental instruments, relates to a mouse eyeball, and particularly relates to a petal-shaped halving cutting device for the mouse eyeball.
Background
In the process of mouse animal experiments, the mouse eyeballs need to be cut into petal-shaped equal parts, namely, the pupil of the mouse eyeball faces upwards and is equally divided into four parts, and the four parts are connected at the bottoms and are not completely cut off. The existing means is to cut four pieces of scissors for experiments, but the size of the eyeball of the mouse is small, the difficulty of cutting the eyeball into four pieces of scissors is high, the difficulty of accurately equally dividing the four pieces of scissors is high, the four pieces of scissors are often unevenly divided or the bottoms of the four pieces of scissors are cut off, the four pieces of scissors are separated, and great inconvenience is brought to subsequent experiments. There are some slicing devices in the prior art, such as a rat brain slicing device, a tablet slicing device, etc., but these slicing devices in the prior art are not suitable for cutting mouse eyeball petal-shaped equal parts.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a mouse eyeball petal-shaped equal division cutting device, and solves the technical problems that the mouse eyeball petal-shaped equal division cutting is not accurate and the operation difficulty is large in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a petaloid halving cutting device for a mouse eyeball comprises a base, a cutter positioning mechanism, a cutter and an eyeball cutting base;
the cutter positioning mechanism comprises a vertical fixing column with the bottom end fixed on the base, a rotating cap is mounted at the top end of the vertical fixing column, one end of a transverse fixing rod is fixed on the outer wall of the rotating cap, and a guide positioning cylinder is fixedly mounted at the other end of the transverse fixing rod;
the cutter comprises a cutter bar sleeved in the guide positioning cylinder, and a positioning needle is arranged at the bottom end of the cutter bar; four symmetrical and vertically arranged clamping grooves are formed in the side wall of the cutter bar above the positioning needle head, a blade is installed in each clamping groove, and the bottom end of each blade is rotatably installed at the bottom end of each clamping groove; the top end of the blade is provided with a handle, the cutting edge of the blade is exposed outside the clamping groove, and the back of the blade is embedded in the clamping groove;
the eyeball cutting base comprises a mounting base arranged on the base, a chopping board base is arranged at the central position on the mounting base, an eyeball limiting base is arranged at the central position on the chopping board base, the top surface area of the eyeball limiting base is smaller than that of the chopping board base, and the top surface area of the chopping board base is smaller than that of the mounting base;
an eyeball limiting hole which is attached to an eyeball of a mouse is formed in the center of the eyeball limiting base, the top of the eyeball limiting hole is open, and the bottom of the eyeball limiting hole is recessed into the chopping board base below an interface between the eyeball limiting base and the chopping board base;
a vertical positioning hole for matching and positioning the needle head is processed at the middle position of the bottom of the eyeball limiting hole towards the chopping board base;
the eyeball limit base is provided with four cutting grooves penetrating through the side wall of the eyeball limit hole, the four cutting grooves are used for matching with four blades in a one-to-one correspondence manner, and the groove bottoms of the four cutting grooves are flush with the top surface of the chopping board base;
the vertical fixing column is provided with a limiting block, the rotating cap rotates to a limit position state contacting with the limiting block, the positioning needle head is located right above the positioning hole, and the positions of the four blades and the four cutting grooves are respectively located in the same vertical plane in a one-to-one correspondence mode.
The invention also has the following technical characteristics:
the top of cutter arbor be provided with detachable balancing weight.
The outer diameter of the cutter bar is less than or equal to 0.2 times of the maximum inner diameter of the horizontal section of the eyeball limit hole.
Preferably, the outer diameter of the cutter bar is less than or equal to 0.2 times of the maximum inner diameter of the horizontal section of the eyeball spacing hole.
The guide positioning cylinder is internally provided with a guide key, the cutter bar is provided with a guide groove, and the guide key is matched with the guide groove to ensure that the cutter bar only vertically ascends and descends in the guide positioning cylinder.
The depth of the eyeball limiting hole is 0.65-0.75 time of the distance from the top pupil position to the fundus optic nerve position of the mouse eyeball.
The mounting base, the chopping block base and the eyeball limiting base are integrally formed and arranged in a pyramid shape in an upward progressive shrinkage mode.
The vertical fixing column can adjust the height of the telescopic fixing column.
And the rotating cap is provided with a fastening bolt.
Compared with the prior art, the invention has the following technical effects:
the cutting device is specially designed for the mouse eyeball, the mouse eyeball can be accurately cut into a petal shape, the bottoms of the petal shape and the bottom of the petal shape are connected, the requirements of subsequent experiments are completely met, and meanwhile, the cutting operation difficulty is greatly reduced.
The cutter adopts a mode of firstly inserting the center and then cutting in four directions, thereby ensuring the positioning of the eyeballs of the mouse in the cutting process and improving the cutting quality.
(III) the cutter bar is fine, so that the cutting edge leaks outwards, the cutter bar cannot crush the eyeball of the mouse in the process of downwards penetrating the eyeball of the mouse, no additional wound is caused, and the integrity of the petal of the cut eyeball of the mouse is ensured.
(IV) the eyeball cutting base of the invention is matched with the center of the cutter in a pricking way, so that the positioning of the mouse eyeball in the cutting process is ensured; soft mouse eyeball is wrapped up by rigid base basically in cutting process, also is cut by rigid blade simultaneously, has guaranteed the precision in the cutting process.
And (V) the bottoms of the four cutting grooves are flush with the top surface of the chopping board base, the bottom of the eyeball limiting hole is lower than the interface between the eyeball limiting base and the chopping board base and is recessed into the chopping board base, and the bottom of the eyeball limiting hole and the interface between the eyeball limiting base and the chopping board base are matched to ensure that the cutting transition cannot occur in the cutting process, so that the bottoms of the four petals are connected and cannot be completely separated.
Drawings
Fig. 1 is a schematic view of the overall structure of the invention.
Fig. 2 is a schematic view of the structure of the inventive cutter.
Fig. 3 is a schematic top view of an eyeball cutting base according to the invention.
Fig. 4 is a schematic view of the state of use of the present invention.
The meaning of the individual reference symbols in the figures is: 1-a base, 2-a cutter positioning mechanism, 3-a cutter, 4-an eyeball cutting base, 5-a mouse eyeball, 6-a guide key and 7-a guide groove;
201-vertical fixed column, 202-rotating cap, 203-horizontal fixed rod, 204-guiding positioning cylinder, 205-limiting block;
301-a knife bar, 302-a positioning needle, 303-a clamping groove, 304-a blade, 305-a handle and 306-a balancing weight;
401-mounting base, 402-anvil base, 403-eyeball limit base, 404-eyeball limit hole, 405-positioning hole, 406-cutting groove.
The present invention will be explained in further detail with reference to examples.
Detailed Description
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
Example 1:
according to the above technical solution, as shown in fig. 1 to 4, the present embodiment provides a petaloid bisection cutting device for a mouse eyeball, which includes a base 1, a cutter positioning mechanism 2, a cutter 3 and an eyeball cutting base 4;
the cutter positioning mechanism 2 comprises a vertical fixing column 201, the bottom end of which is fixed on the base 1, a rotating cap 202 is installed at the top end of the vertical fixing column 201, one end of a transverse fixing rod 203 is fixed on the outer wall of the rotating cap 202, and a guide positioning cylinder 204 is fixedly installed at the other end of the transverse fixing rod 203;
the cutter 3 comprises a cutter bar 301 sleeved in the guide positioning cylinder 203, and a positioning needle 302 is arranged at the bottom end of the cutter bar 301; four symmetrical and vertically arranged clamping grooves 303 are formed in the side wall of the cutter bar 301 above the positioning needle 302, a blade 304 is installed in each clamping groove 303, and the bottom end of each blade 304 is rotatably installed at the bottom end of each clamping groove 303; the top end of the blade 304 is provided with a handle 305, the edge of the blade 304 is exposed outside the clamping groove 303, and the back of the blade 304 is embedded in the clamping groove 303;
eyeball cutting base 4 including setting up mounting base 401 on base 1, the central point on mounting base 401 is provided with chopping block base 402, the central point on chopping block base 402 is provided with eyeball limit base 403, the top surface area of eyeball limit base 403 is less than the top surface area of chopping block base 402, the top surface area of chopping block base 402 is less than the top surface area of mounting base 401, promptly mounting base 401, chopping block base 402 and eyeball limit base 403 integrated into one piece and be the pyramid form and upwards progressively contract and lay.
An eyeball limit hole 404 which is attached to a mouse eyeball 5 is formed in the center of the eyeball limit base 403, the top of the eyeball limit hole 404 is open, and the bottom of the eyeball limit hole 404 is recessed into the chopping board base 402 below the interface between the eyeball limit base 403 and the chopping board base 402;
a vertical positioning hole 405 for matching and positioning the needle 302 is processed at the bottom center position of the eyeball limiting hole 404 towards the anvil plate base 402;
four cutting grooves 406 penetrating through the side wall of the eyeball limiting hole 404 are formed in the eyeball limiting base 402, the four cutting grooves 406 are used for being matched with the four blades 304 in a one-to-one correspondence mode, and the groove bottoms of the four cutting grooves 406 are flush with the top surface of the cutting board base 402;
the vertical fixing column 201 is provided with a limiting block 205, the rotating cap 202 rotates to the limit position state contacting with the limiting block 205, the positioning needle 302 is located right above the positioning hole 405, and the positions of the four blades 304 and the four cutting grooves 406 are respectively located in the same vertical plane in one-to-one correspondence.
As a preferable scheme of this embodiment, a detachable counterweight 306 is disposed at the top end of the knife bar 3. The assembly tightness and stability of the cutter bar 3 in the cutting process after the cutter bar 3 is inserted into the mouse eyeball 5 are ensured, and the hands of experiment operators are liberated.
As a preferable scheme of this embodiment, the outer diameter of the tool bar 3 is less than or equal to 0.2 times of the maximum inner diameter of the horizontal cross section of the eyeball-limiting hole 404. The cutter arbor 301 is very thin, so the cutting edge leaks outward, and the cutter arbor 301 can not crush mouse eyeball in the mouse eyeball in-process of pricking downwards, can not cause extra wound yet, guarantees the integrality of the mouse eyeball petal after the cutting. The cutter bar 3 is made of high-strength medical metal materials, and sufficient strength is ensured under the condition of a thinner diameter.
As a preferable scheme of this embodiment, a guide key 6 is disposed in the guide positioning cylinder 204, a guide groove 7 is disposed on the cutter bar 301, and the guide key 6 is matched with the guide groove 7, so that the cutter bar 301 only vertically ascends and descends in the guide positioning cylinder 204. Ensuring that the blade 304 can always correspond to the location of the cutting slot 406.
In a preferred embodiment of the present invention, the depth of the eyeball-limiting hole 404 is 0.65 to 0.75 times the distance from the top pupil position to the fundus optic nerve position of the mouse eyeball 5. The eyeball limit hole 404 ensures the fitting degree of the eyeball limit hole 404 and the outer wall of the mouse eyeball 5 as much as possible on the basis of ensuring enough limit performance on the mouse eyeball 5.
As a preferable solution of this embodiment, the vertical fixing column 101 is a telescopic fixing column capable of adjusting height. The height can be conveniently adjusted according to actual needs. The rotating cap 402 is provided with a fastening bolt. When the transverse fixing rod 403 is rotated to a desired position, the locking position is facilitated, and the positioning needle 302 is ensured to be positioned right above the positioning hole 405.
When the device is used, the height of the vertical fixing column 201 is adjusted, the rotating cap 202 is rotated to be in a limit position state contacting with the limiting block 205, the positioning needle head 302 is ensured to be positioned right above the positioning hole 405, the mounting base 401 is fixed on the base 1, and the positioning needle head 302 is ensured to be positioned right above the positioning hole 405 each time the rotating cap 202 is rotated to be in the limit position state contacting with the limiting block 205. After the preparation work is completed, the mouse eyeball 5 is placed in the eyeball-restraining hole 404 so that the pupil is directed straight upward. The lateral fixing lever 203 is rotated so that the rotation cap 202 is brought into contact with the stopper 205, and the rotation cap 202 is locked by fastening a bolt. The cutter 3 is sleeved in the guide positioning cylinder 204, the counterweight block 306 is arranged on the cutter 3, and the positioning needle 302 is positioned right above the positioning hole 405. The cutter bar 301 is loosened, the cutter bar 301 descends under the action of self weight and the balancing weight 306, and auxiliary descending force can be applied at the same time, so that the positioning needle 302 penetrates through the through hole of the eyeball 5 of the mouse and is pricked into the positioning hole 405, and the whole cutter bar 301 is stabilized. At this time, the knife bar 301 is also inserted into the center of the mouse eyeball 5, and the four blades 304 are retracted to make a cross-shaped incision in the center of the mouse eyeball 5. Then, each blade 304 is driven by the handle 305 to rotate downwards, the cutting edge of each blade 304 cuts the mouse eyeball 5 along the cross-shaped cut respectively until the cutting edge of the blade 304 enters the cutting groove 406 and contacts with the groove bottom, at this time, the cutting edge of the blade 304 is flush with the top surface of the anvil plate base 402, most of the mouse eyeball 5 is cut into four equally-divided pieces, and a small part of the bottom of the mouse eyeball 5 lower than the top surface of the anvil plate base 402 is still connected together, so that the petal-shaped equally-divided cutting of the mouse eyeball is completed.
Claims (8)
1. A petaloid halving cutting device for a mouse eyeball comprises a base (1), and is characterized by further comprising a cutter positioning mechanism (2), a cutter (3) and an eyeball cutting base (4);
the cutter positioning mechanism (2) comprises a vertical fixing column (201) with the bottom end fixed on the base (1), a rotating cap (202) is installed at the top end of the vertical fixing column (201), one end of a transverse fixing rod (203) is fixed on the outer wall of the rotating cap (202), and a guide positioning cylinder (204) is fixedly installed at the other end of the transverse fixing rod (203);
the cutter (3) comprises a cutter bar (301) sleeved in the guide positioning cylinder (203), and a positioning needle (302) is arranged at the bottom end of the cutter bar (301); four symmetrical and vertically arranged clamping grooves (303) are formed in the side wall of the cutter bar (301) above the positioning needle head (302), a blade (304) is installed in each clamping groove (303), and the bottom end of each blade (304) is rotatably installed at the bottom end of each clamping groove (303); a handle (305) is arranged at the top end of the blade (304), the cutting edge of the blade (304) is exposed out of the clamping groove (303), and the back of the blade (304) is embedded in the clamping groove (303);
the eyeball cutting base (4) comprises a mounting base (401) arranged on the base (1), a cutting board base (402) is arranged at the central position on the mounting base (401), an eyeball limiting base (403) is arranged at the central position on the cutting board base (402), the top surface area of the eyeball limiting base (403) is smaller than that of the cutting board base (402), and the top surface area of the cutting board base (402) is smaller than that of the mounting base (401);
an eyeball limit hole (404) which is attached to an eyeball (5) of the mouse is formed in the center of the eyeball limit base (403), the top of the eyeball limit hole (404) is open, and the bottom of the eyeball limit hole (404) is lower than the interface between the eyeball limit base (403) and the chopping board base (402) and is recessed into the chopping board base (402);
a vertical positioning hole (405) for matching and positioning the needle head (302) is processed at the bottom center position of the eyeball limiting hole (404) towards the cutting board base (402);
four cutting grooves (406) penetrating through the side wall of the eyeball limiting hole (404) are formed in the eyeball limiting base (402), the four cutting grooves (406) are used for being matched with the four blades (304) in a one-to-one correspondence mode, and the groove bottoms of the four cutting grooves (406) are flush with the top surface of the chopping block base (402);
the vertical fixing column (201) is provided with a limiting block (205), the rotating cap (202) rotates to the state of the limit position contacting with the limiting block (205), the positioning needle head (302) is positioned right above the positioning hole (405), and the positions of the four blades (304) and the four cutting grooves (406) are in one-to-one correspondence and are respectively positioned in the same vertical plane.
2. The petaloid bisection cutting device of a mouse eyeball as set forth in claim 1, characterized in that a detachable counterweight (306) is arranged at the top end of the cutter bar (3).
3. The mouse eyeball petaloid halving cutting device as claimed in claim 1, characterized in that the outer diameter of the cutter bar (3) is less than or equal to 0.2 times of the maximum inner diameter of the horizontal section of the eyeball limit hole (404).
4. The mouse eyeball petaloid halving cutting device according to claim 1, wherein a guide key (6) is arranged in the guide positioning cylinder (204), a guide groove (7) is arranged on the cutter bar (301), and the guide key (6) is matched with the guide groove (7) to ensure that the cutter bar (301) only vertically ascends and descends in the guide positioning cylinder (204).
5. The petaloid dissection device of a mouse eyeball according to claim 1, characterized in that the depth of the eyeball limiting hole (404) is 0.65 to 0.75 times the distance from the apical pupil position to the fundus optic nerve position of the mouse eyeball (5).
6. The mouse eyeball petaloid halving device as claimed in claim 1, wherein the mounting base (401), the anvil base (402) and the eyeball limiting base (403) are integrally formed and arranged in a pyramid shape in a gradually decreasing manner.
7. The mouse eyeball petaloid halving cutting device as set forth in claim 1, characterized in that the vertical fixing column (101) is a telescopic fixing column with adjustable height.
8. The mouse eyeball petaloid halving device as claimed in claim 1, characterized in that the rotating cap (402) is provided with a fastening bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911152981.0A CN110919730A (en) | 2019-11-22 | 2019-11-22 | Mouse eyeball petal-shaped equal cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911152981.0A CN110919730A (en) | 2019-11-22 | 2019-11-22 | Mouse eyeball petal-shaped equal cutting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110919730A true CN110919730A (en) | 2020-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911152981.0A Pending CN110919730A (en) | 2019-11-22 | 2019-11-22 | Mouse eyeball petal-shaped equal cutting device |
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| Country | Link |
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| CN (1) | CN110919730A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112356122A (en) * | 2020-10-20 | 2021-02-12 | 山东省千佛山医院 | Tissue block cutting device |
| CN112659252A (en) * | 2020-12-18 | 2021-04-16 | 成都飞机工业（集团）有限责任公司 | Handheld sealing rubber strip positioning and perforating device and positioning and perforating method |
-
2019
- 2019-11-22 CN CN201911152981.0A patent/CN110919730A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112356122A (en) * | 2020-10-20 | 2021-02-12 | 山东省千佛山医院 | Tissue block cutting device |
| CN112659252A (en) * | 2020-12-18 | 2021-04-16 | 成都飞机工业（集团）有限责任公司 | Handheld sealing rubber strip positioning and perforating device and positioning and perforating method |
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