CN202965019U - Negative pressure drainage ball mould with convenience for demoulding - Google Patents
Negative pressure drainage ball mould with convenience for demoulding Download PDFInfo
- Publication number
- CN202965019U CN202965019U CN 201220642308 CN201220642308U CN202965019U CN 202965019 U CN202965019 U CN 202965019U CN 201220642308 CN201220642308 CN 201220642308 CN 201220642308 U CN201220642308 U CN 201220642308U CN 202965019 U CN202965019 U CN 202965019U
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- China
- Prior art keywords
- negative pressure
- drainage ball
- pressure drainage
- demoulding
- mould
- Prior art date
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a negative pressure drainage ball mould with convenience for demoulding. The negative pressure drainage ball mould is characterized in that the center of the mould core of the negative pressure drainage ball mould is provided with a longitudinal slot hole; the opening of the slot hole is positioned at the bottom of the mould core and can be connected with a compressed air pump; and the top end part of the slot hole is provided with a conical one-way valve.
Description
Technical field
The utility model relates to a kind of manufacturing equipment of medical rubber, specifically, relates to a kind of manufacturing equipment of druggist rubber sundrier of sacculus shape, more particularly, relates to a kind of mould of being convenient to the sacculus stripping operation.
Background technology
Process in treatment at the surface of a wound, the drainage operation is a very important ring, clinical practice is very extensive, particularly in ENT dept., the application of negative pressure drainage ball is very general, and it can excrete the diffusate in the surface of a wound and hematocele effectively, reduces the formation of dead space, reduce the probability that infects, accelerate wound healing.
Described negative pressure drainage ball is to make with whippy macromolecular material, and wherein elasticity, heat resistance and the ageing-resistant performance due to silicon rubber is particularly outstanding, is widely used clinically.
At present when processing and manufacturing negative pressure drainage ball, usually generally adopt with the compressed air air gun compressed air is blown into bonding gap place between silicone rubber saccule and mould walls, after being expanded, silicon rubber realizes the demoulding with the mould walls disengaging, but in actual production, silicone rubber saccule is when air blowing mould release, because silicon rubber is easily torn, therefore be easy to especially explosion, cause the waster rate of product high, waste is serious.Tracing it to its cause, is mainly because the suffered compressed-air actuated pressure distribution of silicone rubber saccule is inhomogeneous, causes its expansion inconsistent, and the expansion at some position has been surpassed due to the elongation at break of silicon rubber.
Summary of the invention
The problem of explosion easily occurs in stripping operation for silicon rubber negative pressure drainage ball, the utility model proposes a Design of Dies that can overcome this drawback.That is exactly, and in the core rod central authorities that make the drainage ball mould, a vertical slotted hole is set, and this hole is opened on the bottom of core rod, and can be connected with compressed air pump, and top ends is provided with cone shaped one-way valve, allows compressed air to flow out.When the demoulding, with an end of compressed air hand-hole, the check valve of the other end is compressed the effect of air pressure, upwards rises, and opens.At this moment, compressed air just injects between silicone rubber saccule and model.Silicone rubber saccule is subject to the effect of even air pressure, slowly upwards rises, and smooth and model separation has been avoided the generation of demoulding Decrepitation Phenomena.
As mentioned above, the internal diameter that is arranged on vertical slotted hole of core rod central authorities is preferably 3 ~ 4mm, so that the compressed air that flows out keeps sufficiently stable pressure.The angle of taper of described cone shaped one-way valve is preferably 60 degree, and valve port one end is connected with compressed air line by vertical slotted hole, and the other end is opened on the slotted hole exit of mould.When stripping operation, compressed-air actuated air pressure is constant is 0.2MPa.
The utility model has the advantages that apparently, during due to stripping operation, compressed air upwards rises from core rod bottom diffusion, and the balloon wall pressure of air by compression is even, Decrepitation Phenomena can not occur, thereby greatly improve the qualification rate of product.
Description of drawings
Fig. 1 is the schematic diagram that adopts silicon rubber spare and model separation after the utility model.Shown in Figure 2 is the schematic diagram of silicone rubber saccule when not yet separating with core rod.Fig. 3 is blown into along monolateral the schematic diagram that compressed air breaks away from rubber parts and model with conventional method.The compressed-air actuated flow path of arrow indication in figure, the label in figure is: 1---cone valve; 2---silicone rubber saccule; 3---vertical slotted hole; 4---core rod; 5---compressed air inlet.
The specific embodiment
Below in conjunction with embodiment, the utility model is further described in detail, but the utility model is in no way limited to this embodiment.
Embodiment 1
Referring to accompanying drawing 1, it is the silicon rubber negative pressure drainage ball of 400ml by the mould manufacturing dimension shown in figure, central authorities at this mould core 4 are provided with vertical slotted hole 3 that internal diameter is 4mm, vertically an end of slotted hole 3 is fixed 60 degree cone shaped one-way valve 1, the other end is connected with compressed air pump by pipeline, is filled with compressed air during the demoulding, and constant pressure is 0.2MPa, compressed air is full of from bottom to top between balloon wall 2 and core rod 4, thus the demoulding smoothly.
Claims (4)
1. a negative pressure drainage ball mould of being convenient to the demoulding, is characterized in that, in the core rod central authorities of this mould, a vertical slotted hole is set, and this hole is opened on the bottom of core rod, and can be connected with compressed air pump, and top ends is provided with cone shaped one-way valve.
2. negative pressure drainage ball mould according to claim 1, is characterized in that, described vertical slotted hole internal diameter is 3 ~ 4mm.
3. negative pressure drainage ball mould according to claim 1, is characterized in that, described check valve is the check valve of tapering 60 degree, and the one end is connected with compressed air line by vertical slotted hole, and the other end is opened on the slotted hole exit of mould.
4. negative pressure drainage ball mould according to claim 1, is characterized in that, when wanting the demoulding, compressed-air actuated air pressure is constant is 0.2MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220642308 CN202965019U (en) | 2012-11-29 | 2012-11-29 | Negative pressure drainage ball mould with convenience for demoulding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220642308 CN202965019U (en) | 2012-11-29 | 2012-11-29 | Negative pressure drainage ball mould with convenience for demoulding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202965019U true CN202965019U (en) | 2013-06-05 |
Family
ID=48506145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220642308 Expired - Lifetime CN202965019U (en) | 2012-11-29 | 2012-11-29 | Negative pressure drainage ball mould with convenience for demoulding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202965019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370548A (en) * | 2019-08-02 | 2019-10-25 | 曾广辉 | A kind of soft-ball releasing process |
| CN113059120A (en) * | 2021-03-08 | 2021-07-02 | 康硕(江西)智能制造有限公司 | Wax pattern 3D printer and printing method thereof |
-
2012
- 2012-11-29 CN CN 201220642308 patent/CN202965019U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370548A (en) * | 2019-08-02 | 2019-10-25 | 曾广辉 | A kind of soft-ball releasing process |
| CN113059120A (en) * | 2021-03-08 | 2021-07-02 | 康硕(江西)智能制造有限公司 | Wax pattern 3D printer and printing method thereof |
| CN113059120B (en) * | 2021-03-08 | 2022-11-18 | 康硕(江西)智能制造有限公司 | Wax pattern 3D printer and printing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI RUBBER PRODUCT INSTITUTE CO., LTD. Free format text: FORMER NAME: SHANGHAI RUBBER PRODUCTS INST.;SHANGHAI RUBBER PRODUCTS INST. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 200052 No. 381, Panyu Road, Shanghai, Changning District Patentee after: SHANGHAI INSTITUTE OF RUBBER PRODUCTS Co.,Ltd. Address before: 200052 No. 381, Panyu Road, Shanghai, Changning District Patentee before: Shanghai Institute of Rubber Products |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |