CN208179716U - A kind of blanking units for exempting from silication piston - Google Patents
A kind of blanking units for exempting from silication piston Download PDFInfo
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- CN208179716U CN208179716U CN201820732428.9U CN201820732428U CN208179716U CN 208179716 U CN208179716 U CN 208179716U CN 201820732428 U CN201820732428 U CN 201820732428U CN 208179716 U CN208179716 U CN 208179716U
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- piston
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Abstract
The utility model discloses a kind of blanking units for exempting from silication piston, the blanking units are divided into die cutting die former and die cutting die formpiston, circular ring shape, which is equipped with, around punching on the die cutting die former stretches groove, the annular stretches the center of circle of groove and the center of circle of punching and is overlapped, it is provided in the pressure plate of the die cutting die formpiston and stretches the annular convex platform that groove matches with annular, it is 3-8mm that the annular, which stretches the internal ring wall of groove and the spacing of the inner wall of punching, the depth that the annular stretches groove is 2-5mm, and the width that annular stretches groove is 3-6mm.Exempt from silication piston using what the blanking units of the utility model obtained, punching is tilted towards central axis, for conventional piston, the separate needle cylinder wall being close to piston in punching face, piston will not be in contact with needle cylinder wall when syringe slides, will not generate resistance to sliding.
Description
Technical field
The utility model belongs to piston Punching Technology field, and in particular to a kind of blanking units for exempting from silication piston.
Background technique
Traditional piston is punched mode, punching face be plane or with jagged arcwall face (patent No.:
201721233382.8), when testing piston sliding capability, due to the obstruction in punching face, the resistance to sliding of piston is caused to increase,
Test result is usually unqualified, therefore needs that a certain amount of silicone oil is added in piston cleaning process, and silicone oil is deposited on punching face,
When testing sliding force, silicone oil can be substantially reduced resistance to sliding.Application No. is the uses of 201721233382.8 utility model patent
The method that silicone oil reduces resistance to sliding is added.And exempt from silication piston, since piston face does not have the accumulation of silicone oil, test sliding force
When, due to being punched the obstruction in face, it is bound to cause resistance to sliding increase.Therefore, there is an urgent need to research and develop can reduce to exempt from silication piston
The blanking units of resistance to sliding.
Utility model content
Aiming at the problems existing in the prior art, the utility model provides a kind of blanking units for exempting from silication piston, utilizes
The resistance to sliding that the blanking units obtained exempt from silication piston can substantially reduce.
In order to solve the above technical problems, the utility model uses following technical scheme:
A kind of blanking units for exempting from silication piston, the blanking units are divided into die cutting die former and die cutting die formpiston,
Circular ring shape is equipped with around punching on the die cutting die former and stretches groove, and the annular stretches the center of circle of groove and the circle of punching
The heart is overlapped, and is provided in the pressure plate of the die cutting die formpiston and is stretched the annular convex platform that groove matches with annular.
It is 3-8mm that the annular, which stretches the internal ring wall of groove and the spacing of the inner wall of punching,.
The depth that the annular stretches groove is 2-5mm, and the width that annular stretches groove is 3-6mm.
The pressure plate is bolted on die cutting die formpiston, and punching pin hole is provided in pressure plate.
Beneficial effects of the present invention: blanking units of the invention are suitable for the film of multiple pistons composition, and piston is punched
The diameter in face be less than piston entirety diameter, the piston face be covered with tetrafluoroethene film, ethylene tetrafluoroethylene film,
Piston is inserted respectively into multiple punchings by PET film or polyvinyl resin with super-high molecular weight film, when punching, in pressure plate
Annular convex platform is pressing against piston film and is entering annular stretching groove, and drawing force passes to the piston glue between annular stretching groove and punching
On piece generates tractive force to piston, makes piston that flexible deformation occur, and piston punching face part is tightly attached on the punching wall of former, so
Punching pin decline in die cutting die punch hole afterwards, separates piston, to obtain being punched towards in piston from piston film
Mandrel line is inclined to exempt from silication piston, and since this punching is tilted towards central axis, the separate needle cylinder wall being close to piston is living
Plug will not be in contact with needle cylinder wall in syringe sliding, will not generate resistance to sliding.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the blanking units that the utility model exempts from silication piston.
Fig. 2 is the utility model for exempting from silication piston (a) Yu 201721233382.8 being punched using the utility model
Piston (b) in patent.
Specific embodiment
Combined with specific embodiments below, the utility model is described further.It should be understood that following embodiment is only used for
The person skilled in the art of the range that bright the utility model rather than limits the present invention, the field can be according to above-mentioned practical
Novel content makes some nonessential modifications and adaptations.
As shown in Figure 1, a kind of blanking units for exempting from silication piston, the blanking units are divided into die cutting die former 1 and punching
Mold formpiston 2 is cut, die cutting die former 1 is equipped with punching 3, draws around punching 3 equipped with circular ring shape on the die cutting die former 1
Groove 4 is stretched, the annular stretches the center of circle of groove 4 and the center of circle of punching 3 and is overlapped, and annular stretches internal ring wall and the punching 3 of groove 4
Inner wall spacing be 3-8mm, annular stretch groove 4 depth be 2-5mm, annular stretch groove 4 width be 3-6mm.
It is provided in the pressure plate 6 of the die cutting die formpiston 2 and stretches the annular convex platform 8 that groove 4 matches, institute with annular
It states pressure plate 6 to be bolted on die cutting die formpiston 2, punching pin hole 71 is provided in pressure plate 6, is equipped with punching in punching pin hole
Son 7.
Method for die cutting of the invention is suitable for the film of multiple pistons composition, and the diameter in piston punching face 91 is less than piston
9 whole diameters, the piston face are covered with tetrafluoroethene film, ethylene tetrafluoroethylene film, PET film or supra polymer
Piston is inserted respectively into multiple punchings by weight ethylene resin film, when punching.
When punching, the annular convex platform in pressure plate is pressing against piston film 5 and is entering annular stretching groove, and drawing force passes to annular
It stretches and tractive force is generated to piston on the piston film between groove and punching, make piston that flexible deformation occur, piston is punched face
Part is tightly attached on the punching wall of former, and then the punching pin decline in die cutting die punch hole, separates from piston film
Piston exempts from silication piston (as shown in Figure 2) towards piston centre axis is inclined to obtain being punched, due to this punching towards
Central axis inclination is punched the separate needle cylinder wall being close to piston in face for conventional piston, and piston is slided in syringe
When, it will not be in contact with needle cylinder wall, resistance to sliding will not be generated.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.This
The technical staff of industry is retouched in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
That states only illustrates the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model
It will also have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.This is practical new
Type is claimed range and is defined by the appending claims and its equivalent thereof.
Claims (4)
1. a kind of blanking units for exempting from silication piston, the blanking units are divided into die cutting die former (1) and die cutting die formpiston
(2), die cutting die former (1) is equipped with punching (3), it is characterised in that: around punching (3) on the die cutting die former (1)
Groove (4) are stretched equipped with circular ring shape, the annular stretches the center of circle of groove (4) and the center of circle of punching (3) and is overlapped, the blanking die
It is provided in the pressure plate (6) for having formpiston (2) and stretches the annular convex platform (8) that groove (4) match with annular.
2. the blanking units according to claim 1 for exempting from silication piston, it is characterised in that: the annular stretches groove (4)
Internal ring wall and punching inner wall spacing be 3-8mm.
3. the blanking units according to claim 1 for exempting from silication piston, it is characterised in that: the annular stretches groove (4)
Depth be 2-5mm, annular stretch groove (4) width be 3-6mm.
4. the blanking units according to claim 1 for exempting from silication piston, it is characterised in that: the pressure plate (6) passes through spiral shell
Bolt is fixed on die cutting die formpiston (2), and punching pin hole (71) are provided in pressure plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820732428.9U CN208179716U (en) | 2018-05-17 | 2018-05-17 | A kind of blanking units for exempting from silication piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820732428.9U CN208179716U (en) | 2018-05-17 | 2018-05-17 | A kind of blanking units for exempting from silication piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208179716U true CN208179716U (en) | 2018-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820732428.9U Active CN208179716U (en) | 2018-05-17 | 2018-05-17 | A kind of blanking units for exempting from silication piston |
Country Status (1)
| Country | Link |
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| CN (1) | CN208179716U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108687864A (en) * | 2018-05-17 | 2018-10-23 | 郑州翱翔医药科技股份有限公司 | A kind of blanking units and method for die cutting for exempting from silication piston |
-
2018
- 2018-05-17 CN CN201820732428.9U patent/CN208179716U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108687864A (en) * | 2018-05-17 | 2018-10-23 | 郑州翱翔医药科技股份有限公司 | A kind of blanking units and method for die cutting for exempting from silication piston |
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