CN201573314U

CN201573314U - Rubber plug production mould for self-destruction safe injection syringes

Info

Publication number: CN201573314U
Application number: CN2009202786583U
Authority: CN
Inventors: 江德明
Original assignee: ZHEJIANG SHENGLI MEDICAL DEVICES CO Ltd
Current assignee: ZHEJIANG SHENGLI MEDICAL DEVICES CO Ltd
Priority date: 2009-11-05
Filing date: 2009-11-05
Publication date: 2010-09-08
Anticipated expiration: 2019-11-05

Abstract

The utility model provides a rubber plug production mould for self-destruction safe injection syringes, belongs to the technical field of medical instruments, and solves the problem that the surface of a piston produced by the conventional injection syringe rubber plug production mould has burrs and flashes. The rubber plug production mould provided by the utility model comprises a female mould and a male mould which can be buckled with each other; the female mould is provided with a cylindrical cavity; a raised formation rod is arranged in the center at the bottom of the female mould; a raised cylinder body is arranged in the center of the male mould; and when the female mould and the male mould are buckled, the formation rod and the cylinder body are correspondingly arranged, the cylinder body is inserted in the cavity, and part of the formation rod is inserted into the cylinder body. The utility model can effectively remove flashes, and has the advantages of convenient processing and reasonable structural design.

Description

A kind of self-destroy safety injector plug production mould

Technical field

The utility model belongs to technical field of medical instruments, relates to a kind of syringe rubber plug production mould, particularly a kind of production mould of self-destroy safety injector plug.

Background technology

Cause the cross infection of virus for fear of using antihygienic syringe, disposable syringe is widely used in field of medical technology.At present, type self-destroyed, safe syringe is various in style, but all use inconveniently because of it, when after having injected Tip protection being covered back stitching, stab medical personnel easily, thereby cause germ to jeopardize medical personnel.And present type self-destroyed, safe syringe is in the processing technology of plug, its processing technology complexity, and the plug qualification rate of producing is not high.Moreover the mould that is used for plug production can not be produced by batch, and this production is quite bothersome.

For this reason, people have proposed various solutions through long-term exploration, and wherein also some has applied for patent.As Chinese patent disclose a kind of pharmaceutical injection device piston blocking with and manufacturing method and apparatus [Granted publication number be: CN1487873A], it have one in the use location in the face of the contents of your pipe of syringe tube or Kapp, by the plug section that a kind of inert membrane's cap shape surrounds, this plug section leans on syringe tube or Kapp that pipe by its inert membrane.The piston blocking has the seal section of the not coating of a described plug section of adjacency.It also relates to a kind of apparatus and method that are used to make this piston blocking in addition.Unvulcanized rubber slab put in the mould with the inert membrane and form by layered structural member under the pressure and temperature effect except have one be retained in the mould parting surface, the side stretches out the profile of the complete piston blocking the overlap of piston blocking.The cavity that holds of stopper rod enters into the plug section of being surrounded by inert membrane's cap shape always.Squeeze described holding in the cavity around the seal section wall zone that holds cavity.By a die-cut process, the piston blocking is separated with overlap then, wherein on seal section, form one around, the seal area that is close to the inert membrane edge that surrounds the plug section.

The pharmaceutical injection device piston blocking of obvious this structure, its in use syringe needle can not be pulled back in the injection tube, when after medical personnel are injecting, Tip protection being covered back stitching, stabbed easily.And this piston blocking surface inevitably can produce overlap and burr, and overlap and burr can be followed transfusion fluid and entered in the human body during use, and human body is caused serious negative effect.Moreover the device that is used to make this piston blocking is too complicated, and the method that is used to make this piston blocking is not easy to operation, manufacturing procedure complexity.

Summary of the invention

The purpose of this utility model is to have the problems referred to above at existing technology, has proposed a kind of self-destroy safety injector plug and mould that can effectively remove overlap, easy to process and reasonable in design.

The purpose of this utility model can realize by following technical proposal: a kind of self-destroy safety injector plug and mould, comprise the die and the punch that can fasten mutually, it is characterized in that, described die has cylindrical cavity, at the lobed curved lever of the bottom centre of die, the lobed cylindrical shell in described punch center is when die and punch fastening, the corresponding setting with cylindrical shell of above-mentioned curved lever, described cylindrical shell insert in the cavity and curved lever partly inserts in the cylindrical shell.

This self-destroy safety injector of the main moulding of curved lever plug of die bottom centre pass through the hole, the cylindrical shell of punch internal projection is used for moulding and is positioned at that to pass through the hole inner and extend to the column of accommodation hole.When die and punch fastening, the curved lever of die bottom centre is corresponding one by one with the cylindrical shell at punch center, and the cylindrical shell at punch center inserts in the cavity and curved lever partly inserts in the cylindrical shell.Syringe rubber plug with the Mould Machining of this structure is come out can reduce the overlap that plug in use occurs greatly, can not have a negative impact to human body.

In above-mentioned self-destroy safety injector plug and mould, this mould also comprises convex template and concave template, on convex template, be fixed with several above-mentioned punch by demountable structure, describedly on concave template, be fixed with several above-mentioned dies by demountable structure, each punch and die all are array distribution, and punch and the corresponding one by one setting of die when fastening convex template and concave template.

The purpose of She Zhiing is like this, and punch and convex template removably connect, and die and concave template removably connect, and after punch or die are damaged, can take out punch separately or die repairs or replaces.Thereby avoided needing to change the situation of putting in order secondary mould because of the damage of a punch or die.Be removably connected with a plurality of punch on the convex template, be removably connected with a plurality of dies on the concave template, and die and the corresponding one by one setting of punch.So just can reach and can process a plurality of self-destroy safety injector plugs simultaneously, one-shot forming is a plurality of, and the single self-destroy safety injector plug operating efficiency of processing is higher separately, can save production cost simultaneously, and the product quality of producing is better.

In above-mentioned self-destroy safety injector plug and mould, be provided with the fixed structure that both are fixed together between described convex template and the concave template, link by helicitic texture between described punch and the convex template, link by helicitic texture between described die and the concave template.Usually, can locating hole be set, reference column be set at the edge of concave template at the edge of convex template, reference column and locating hole are complementary, and when reference column cooperated with locating hole, die and punch were opposed one by one, thereby realized that easily the quick, accurate of die and punch fastens.Convex template and concave template relative fixed are firm, could guarantee the quality of the plug that at every turn processes, the situation of also having avoided each process all will proofread and correct mould simultaneously.The fixed structure here adopts clip, make convex template and concave template relative fixed firm, and it is more firm to be threaded, and can guarantee the stability of punch and die in the process.

In above-mentioned self-destroy safety injector plug and mould, the cavity bottom of described die is tapered, has the cannelure of the circular arc of some axial distribution at the inwall of die; The cylindrical shell top of described punch has the annular convex ring of protrusion.

Compared with prior art, the beneficial effects of the utility model are:

1, owing on punch, is provided with the cylindrical shell of projection, and be provided with curved lever in the center of die, its top of the plug that processes does not need to carry out the die-cut just energy straight forming of reprocessing technique that waits, avoided like this at plug top generation overlap and burr etc., when penetrating this plug with syringe, syringe stem can not be brought into overlap on the plug and burr in the transfusion fluid, can not exert an influence to human body.

2, because punch and die all are detachably connected on respectively on convex template and the concave template, can produce a plurality of syringe rubber plugs simultaneously adding man-hour one mould like this, more with regard to the syringe rubber plug of producing in the identical time, can save process time significantly.And the mould of the structure that removably connects, replacing and maintenance are all more convenient.

Description of drawings

Fig. 1 is the structural representation that punch that the utility model provides is fixed on convex template.

Fig. 2 is the structural representation that die that the utility model provides is fixed on concave template.

Structural representation when Fig. 3 is the convex template that provides of the utility model and concave template matched moulds.

Fig. 4 is the exploded perspective view of the part-structure that provides of the utility model.

Cutaway view when Fig. 5 is the punch that provides of the utility model and die matched moulds.

Fig. 6 is the structural representation of the plug blank that provides of the utility model.

The cutaway view of part-structure when Fig. 7 is the punch that provides of the utility model and die matched moulds.

Fig. 8 is the cutaway view of the plug that provides of the utility model.

Among the figure, 1, plug; 11, accommodation hole; 12, pass through the hole; 13, column; 14, featheredge; 15, arc bulge loop; 2, punch; 21, cylindrical shell; 22, annular convex ring; 3, die; 31, cavity; 32, curved lever; 33, cannelure; 4, elastomeric material; 5, convex template; 6, concave template; 7, locating hole; 8, reference column; 9, clip.

The specific embodiment

Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.

As shown in Figure 1 and Figure 2, this self-destroy safety injector plug and mould, comprise the convex template 5 and the concave template 6 that can fasten mutually, on convex template 5, be fixed with several punch that is array distribution 2 by demountable structure, on concave template 6, be fixed with several dies that is array distribution 3 by demountable structure, as shown in Figure 3, punch 2 and die 3 are corresponding one by one when convex template 5 snaps together mutually with concave template 6.At the edge of convex template 5 locating hole 7 is set, at the edge of concave template 6 reference column 8 is set, reference column 8 is complementary with locating hole 7, and when reference column 8 cooperates with locating hole 7, die 3 and punch 2 are opposed one by one, thus convenient quick, the accurate fastening of realizing die 3 and punch 2.As shown in Figure 3, between convex template 5 and concave template 6, be provided with the clip 9 that both are fixed together.

As shown in Figure 3, be provided with the fixed structure that both are fixed together between the convex template 5 of this self-destroy safety injector plug and mould and the concave template 6; As shown in Figure 7, link by helicitic texture between punch 2 and the convex template 5, link by helicitic texture between die 3 and the concave template 6.

As shown in Figure 1, 2, die 3 has its tapered cylindrical cavity 31 in bottom, and the cannelure 33 that has the circular arc of two axial distribution at the inwall of die 3, at the lobed curved lever 32 of the bottom centre of die 3; The lobed cylindrical shell 21 in punch 2 centers has the annular convex ring 22 of protrusion at cylindrical shell 21 tops.As shown in Figure 5, when die 3 and punch 2 fastenings, the cylindrical shell 21 corresponding settings at the curved lever 32 of die 3 bottom centre and punch 2 centers, the cylindrical shell 21 at punch 2 centers insert in the cavity 31 of die 3 and curved lever 32 parts of die 3 bottom centre are inserted in the cylindrical shell 21 at punch 2 centers.

As shown in Figure 8, plug 1 is cylindric, and an end of plug 1 has the accommodation hole 11 that is used to connect firmly injection rod, and the other end has the top, has at the top to connect with accommodation hole 11 and pass through hole 12 for what the bar head of injection rod passed.

During with this Mould Machining, take and do not vulcanize and have a certain thickness sheet elastomeric material 4, elastomeric material 4 is placed between punch 2 and the die 3, then punch 2 is fastened and is fixed with die 3 and be in the same place, elastomeric material 4 is clamped between punch 2 and the die 3; Be placed on and carry out vulcanizing treatment in the vulcanization plant accompanying the punch 2 of elastomeric material 4 and die 3, elastomeric material 4 is full of by punch 2 and die 3 fastens the die cavity that forms, obtain the plug blank after the demoulding, this plug blank is cylindric, have accommodation hole 11 at the one end, the other end has the top, has the hole of passing through 12 at the top, the inner shutoff of passing through hole 12 has the column 13 that extends to accommodation hole 11, has featheredge 14 at the sidepiece of plug blank; Remove column 13 by die-cut mode then, connect, remove featheredge 14 by die-cut mode simultaneously, make plug thereby make accommodation hole 11 and pass through hole 12.

Shown in Fig. 6,7, when the product of producing in whole processing technology was not die-cut, the sidepiece of plug blank had some arc bulge loops 15, and each plug blank is linked together by featheredge 14.

Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Although the possibility of using other term do not got rid of in terms such as this paper has used plug 1, accommodation hole 11, passes through hole 12, column 13, featheredge 14, arc bulge loop 15, punch 2, cylindrical shell 21, annular convex ring 22, die 3, cavity 31, curved lever 32, cannelure 33, elastomeric material 4, convex template 5, concave template 6, locating hole 7, reference column 8, clip 9 morely.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.

Claims

1. self-destroy safety injector plug and mould, comprise the die (3) and the punch (2) that can fasten mutually, it is characterized in that, described die (3) has cylindrical cavity (31), the lobed curved lever of bottom centre (32) at die (3), the lobed cylindrical shell in described punch (2) center (21), when die (3) and punch (2) fastening, above-mentioned curved lever (32) and the corresponding setting of cylindrical shell (21), described cylindrical shell (21) insert in the cavity (31) and curved lever (32) part is inserted in the cylindrical shell (21).

2. self-destroy safety injector plug and mould according to claim 1, it is characterized in that, this mould also comprises convex template (5) and concave template (6), upward be fixed with several above-mentioned punch (2) at convex template (5) by demountable structure, described going up at concave template (6) is fixed with several above-mentioned dies (3) by demountable structure, each punch (2) and die (3) all are array distribution, and punch (2) and the corresponding one by one setting of die (3) when fastening convex template (5) and concave template (6).

3. self-destroy safety injector plug and mould according to claim 3, it is characterized in that, be provided with the fixed structure that both are fixed together between described convex template (5) and the concave template (6), link by helicitic texture between described punch (2) and the convex template (5), link by helicitic texture between described die (3) and the concave template (6).

4. according to claim 1 or 2 or 3 described self-destroy safety injector plug and moulds, it is characterized in that cavity (31) bottom of described die (3) is tapered, the cannelure (33) that has the circular arc of some axial distribution at the inwall of die (3); Cylindrical shell (21) top of described punch (2) has the annular convex ring (22) of protrusion.