CN205215721U - Integrated into one piece combined cover - Google Patents

Abstract

The utility model discloses an integrated into one piece combined cover, including lid, plug and book lid, roll over welded plate and valve body that the lid includes integrated into one piece, be provided with single general formula fluid passage in the cavity of lid, the up end correspondence of lid is provided with the seal valve, fluid passage's middle part is provided with sealed diaphragm, should sealed diaphragm keeps apart into independent last cavity, cavity down with fluid passage, and the internal thermoplastic elastomer that has directly moulded plastics of epicoele, this thermoplastic elastomer directly mould plastics the plug that forms and last cavity and permeate and personally experience sth. Part of the body to it is sealed completely with fluid passage upper portion opening. The utility model discloses follow two aspects of product design and processing technology and start with, choose thermoplastic elastomer class plug for use, through the mode that the substep was moulded plastics, accomplish the shaping and the equipment of polypropylene lid and plug on an equipment, simple process, molding cycle is short, and product quality is effectively promoted.

Description

A kind of one-body molded composite cover

Technical field

This utility model relates to medical infusion packing technique field, is specifically related to a kind of one-body molded composite cover.

Background technology

Current infusion bottle or transfusion bag, after liquid drug, need to seal bottle or transfusion bag with corresponding closing device, the many employings of this sealing device be fold.This fold is made up of three parts usually: inner cap, lid and the plug be placed between inner cap and lid.

Wherein plug is raw material usually with polyisoprene rubber, and after obtained with die pressing, the inner cap of prior molding, lid and shim pack are combined together by utilization group lid equipment.This kind of explained hereafter cycle is long, and especially the production process of plug is complicated, and easily causes secondary pollution in process of production, and the probability of bringing foreign body in product into strengthens, and causes hidden danger of quality.

Utility model content

For prior art Problems existing, the purpose of this utility model is to provide the one-body molded composite cover that a kind of structure is simple, molding cycle is short, safety is high.

For achieving the above object, a kind of one-body molded composite cover of this utility model, comprise lid, plug and fold, fold comprises integrated welded plate and valve body, be provided with single-pass formula fluid passage in the cavity of lid, the upper surface correspondence of lid is provided with described fold; The middle part of fluid passage is provided with seal dissepiment, fluid passage is isolated into independently upper cavity, lower chamber by sealing barrier film, directly thermoplastic elastomer (TPE) is injected with in described upper cavity, the plug that this thermoplastic elastomer (TPE) is directly injection molded and upper cavity combine together, and are sealed completely by fluid passage upper opening.

Further, the upper port edge of described lid is outward extended with welding ring, and described fold seal welding is in welding ring.

Further, described thermoplastic elastomer (TPE) is polystyrene type elastomer or butyl rubber class elastomer.

Further, impression easy to break is provided with between described welded plate and described valve body.

Further, described seal dissepiment is planar structure, and thickness is 0.3-0.8mm.

Further, described fold is easy fold, easy-to-fold cap, easy broken rod or foldable handle.

Further, the external diameter of described upper cavity is less than or equal to the external diameter of described lower chamber.

This utility model is started with from product design and processing technique two aspect, selects thermoplastic elastomer (TPE) class plug, by the mode of substep injection moulding, an equipment completes molding and the assembling of polypropylene lid and plug, technique is simple, and molding cycle is short, and product quality is effectively promoted.

Accompanying drawing explanation

Fig. 1 is this utility model axonometric chart;

Fig. 2 is this utility model top view;

Fig. 3 is lid sectional view;

Fig. 4 is the sectional view in lid after injection moulding plug;

Fig. 5 be in Fig. 2 A-A to sectional view;

Wherein Reference numeral is: 1-lid, 2-plug, 3-fold, 4-fluid passage, 5-seal dissepiment, 6-upper cavity, 7-welding ring, 8-impression easy to break, 9-welded plate, 10-valve body, 11-lower chamber.

Detailed description of the invention

Below, with reference to accompanying drawing, this utility model is more fully illustrated, shown in the drawings of exemplary embodiment of the present utility model.But this utility model can be presented as multiple multi-form, and should not be construed as the exemplary embodiment being confined to describe here.But, these embodiments are provided, thus make this utility model comprehensively with complete, and scope of the present utility model is fully conveyed to those of ordinary skill in the art.

For ease of illustrating, here can use such as " on ", the space relative terms such as D score " left side " " right side ", for illustration of the element of shown in figure or the feature relation relative to another element or feature.It should be understood that except the orientation shown in figure, spatial terminology is intended to comprise device different azimuth in use or operation.Such as, if the device in figure is squeezed, be stated as the element being positioned at other elements or feature D score will be positioned at other elements or feature " on ".Therefore, exemplary term D score can comprise upper and lower both orientation.Device can otherwise be located (90-degree rotation or be positioned at other orientation), and space used here illustrates relatively can correspondingly explain.

Embodiment 1

As shown in Figures 1 to 5, a kind of one-body molded composite cover of this utility model, comprise lid 1, plug 2 and fold 3, single-pass formula fluid passage 4 is provided with in the cavity of lid 1, the upper surface correspondence of lid 1 is provided with seal cover 3, fold 3 comprises welded plate 9 and valve body 10, and the upper port edge of lid 1 is outward extended with welding ring 7, and fold 3 seal welding is in welding ring 7.

Fold 3 corresponds to seal fluid passage 4, can effective isolating exterior, thus avoids the danger of cross infection.Fluid passage 4 can be used for liquid feeding, gets liquid, infuses etc.

The middle and upper part of fluid passage 4 is provided with seal dissepiment 5, and in the present embodiment, seal dissepiment 5 is planar structure, and thickness is 0.3-0.8mm, and without leak when this thickness had both ensured injection moulding, when ensureing again transfusion, the easy puncture through seal barrier film of puncture needle, ensured bits simultaneously.In actual use, various structures pattern can be set to by seal dissepiment 5 according to demand.Seal dissepiment 5 not only plays sealing, also as the substrat structure of plug 2 injection moulding.Fluid passage 4 is isolated into independently upper cavity 6 and lower chamber 11 by seal dissepiment 5, and the external diameter of upper cavity 6 equals the external diameter of lower chamber 11.Directly be injected with thermoplastic elastomer (TPE) in upper cavity 6, the plug 2 that this thermoplastic elastomer (TPE) is directly injection molded and upper cavity 6 combine together, and are sealed completely by fluid passage 4 upper opening.Plug 2 adopts polystyrene type elastomer or butyl rubber class elastomer to make.

Conveniently in the unlatching of fold 3, between welded plate 9 and valve body 10, be provided with impression 8 easy to break.Fold 3 can be the structures such as easy fold, easy-to-fold cap, easy broken rod or foldable handle.

A kind of one-body molded composite cover of this utility model, concrete preparation technology comprises the steps:

1, special for polypropylene lid pellet and thermoplastic elastomer (TPE) plug pellet are placed in two material injection molding machine, substep injection moulding: inject lid with the special pellet of polypropylene lid, wherein, injection machine one section of temperature is 190-210 DEG C, two-stage nitration temperature is 200-220 DEG C, three sections of temperature are 200-225 DEG C, head temperature 210-230 DEG C, and injection pressure is 60-70MPa;

2, in upper cavity 6, directly inject thermoplastic elastomer (TPE) plug 4 with thermoplastic elastomer (TPE) plug pellet, wherein, injection machine one section of temperature is 150-180 DEG C, two-stage nitration temperature is 160-180 DEG C, three sections of temperature are 165-185 DEG C, head temperature 170-190 DEG C, and injection pressure is 55-65MPa;

3, finally fold 3 is welded.

Embodiment 2

The present embodiment is substantially the same manner as Example 1, and difference is:

The external diameter of upper cavity 6 is less than the external diameter of lower chamber 11.

The one-body molded composite cover of this utility model, can realize the several functions such as dosing and transfusion, and its advantage is as follows:

1, by changing product design and processing technique, lid 1 is one-body molded, eliminates the combinative structure that the inner cap of composite cover in prior art, enclosing cover, plug etc. are complicated, the secondary pollution brought when decreasing fitment combination.

2, cleanliness factor is good, and safety is high.

3, technique is simple, and molding cycle is short, has higher cost advantage.

4, because plug and upper cavity combine together, just do not need to install pad retainer ring additional on plug top, thus further simplify the overall structure of composite cover, simplify processing technique, saved cost.

Claims (7)

1. an one-body molded composite cover, is characterized in that, comprises lid, plug and fold, and fold comprises integrated welded plate and valve body, is provided with single-pass formula fluid passage in the cavity of lid, and the upper surface correspondence of lid is provided with described fold; The middle part of fluid passage is provided with seal dissepiment, fluid passage is isolated into independently upper cavity, lower chamber by sealing barrier film, directly thermoplastic elastomer (TPE) is injected with in upper cavity, the plug that this thermoplastic elastomer (TPE) is directly injection molded and upper cavity combine together, and are sealed completely by fluid passage upper opening.

2. one-body molded composite cover as claimed in claim 1, is characterized in that, the upper port edge of described lid is outward extended with welding ring, and described fold seal welding is in welding ring.

3. one-body molded composite cover as claimed in claim 1, is characterized in that, described thermoplastic elastomer (TPE) is polystyrene type elastomer or butyl rubber class elastomer.

4. one-body molded composite cover as claimed in claim 1, is characterized in that, is provided with impression easy to break between described welded plate and described valve body.

5. one-body molded composite cover as claimed in claim 1, is characterized in that, described seal dissepiment is planar structure, and thickness is 0.3-0.8mm.

6. one-body molded composite cover as claimed in claim 1, is characterized in that, described seal valve is easy fold, easy-to-fold cap, easy broken rod or foldable handle.

7. one-body molded composite cover as claimed in claim 1, is characterized in that, the external diameter of described upper cavity is less than or equal to the external diameter of described lower chamber.