CN111186123A

CN111186123A - Double-balloon sleeve type split mold core

Info

Publication number: CN111186123A
Application number: CN202010124456.4A
Authority: CN
Inventors: 边金尧; 靳国宝; 秦鹏; 代光辉; 杨汉生; 鲜秦川; 王颖; 杨凯
Original assignee: Chaohu University
Current assignee: Chaohu University
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-05-22

Abstract

The invention provides a double-balloon sleeve type split mold core, which relates to the field of balloon molds and comprises a sleeve, wherein the right end of the sleeve is fixedly connected with a fixed mold, the left end of the sleeve is connected with a movable mold in a sliding manner, an upper split mold core and a lower split mold core which are axially and slidably connected with the sleeve are arranged between the fixed mold and the movable mold in the sleeve, and a parison which sequentially penetrates through the movable mold, the upper split mold core, the lower split mold core and the fixed mold is arranged in the sleeve. In the invention, when the mold is opened, all parts of the mold can be separated step by step, and the mold opening is convenient; secondly, adjusting the position of the mold core joint surface of the double-balloon sleeve type split mold according to specific requirements, and obtaining finished products with different specifications through blow molding; and finally, designing an air hole of the mold core at the joint surface position of the split mold core, so that the influence of the air sealed in the cavity on the forming quality of the double-balloon in the blow molding process in the cavity of the double-balloon sleeve type split mold core is avoided.

Description

Double-balloon sleeve type split mold core

Technical Field

The invention relates to the field of balloon molds, in particular to a double-balloon sleeve type split mold core.

Background

As a key instrument for interventional medical treatment, in angioplasty, a balloon dilatation catheter can not only pre-dilate and shape a blood vessel, but also deliver a stent to a designated position and perform precise shaping. The sacculus in the sacculus expansion catheter is an expansion and shaping tool and can be shaped by sacculus shaping equipment. The balloon dilatation catheter for the existing angioplasty mainly takes a single balloon dilatation catheter, the working principle of the balloon dilatation catheter is that a balloon conveys a vascular stent to reach a part of a blood vessel to be dilated, and the balloon is inflated to expand the stent to complete the vascular dilatation and shaping. In order to more smoothly deliver the stent to the embolization site where the angioplasty is required, it is sometimes necessary to pre-dilate the embolized vessel so that the stent smoothly enters the embolization portion, and a double balloon dilatation catheter is developed. The saccule part of the double saccule dilating catheter consists of a main saccule and an auxiliary saccule, the main saccule is responsible for conveying the vascular stent, and the auxiliary saccule is responsible for pre-dilating the vascular embolization part before the stent is shaped so as to facilitate the main saccule to convey the vascular stent to the vascular embolization part and to dilate and shape the stent.

However, with the existing axial split mold core technology, mold opening is difficult after double-balloon blow molding is completed.

Disclosure of Invention

The invention aims to provide a double-balloon sleeve type split mold core, which aims to solve the problem of mold opening and taking out after double-balloon blow molding.

In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a two sacculus sleeve pipe formula is to opening mould core, includes the sleeve pipe, sleeve pipe right-hand member fixedly connected with cover half, sleeve pipe left end sliding connection has the movable mould, is located be equipped with between cover pipe internal cover half and the movable mould with sleeve pipe axial sliding connection on open the mold core, open the mold core down, the intraductal parison that is equipped with in proper order to run through the movable mould, on open the mold core, open mold core, cover half down.

Preferably, the outer side of the left part of the fixed die is fixedly connected with the inner side of the right end of the sleeve, and the third die closing surface at the left end of the fixed die is attached to the right ends of the upper split die core and the lower split die core.

Preferably, a second joint surface is arranged between the upper split mold core and the lower split mold core, and the upper split mold core and the lower split mold core are centrosymmetric about the axes of the upper split mold core and the lower split mold core.

Preferably, the inner side of the left end of the upper split mold core is provided with a first balloon cavity, the right end of the upper split mold core is provided with a second balloon cavity, and the two ends of the upper split balloon are provided with air holes.

Preferably, the first balloon cavity is internally provided with a main balloon of a parison, and the second balloon cavity is internally provided with an auxiliary balloon of the parison.

Preferably, the air holes at the two ends of the upper split mold core are respectively communicated with the two ends of the upper split mold core from the inner sides of the first balloon cavity and the second balloon cavity.

Preferably, the right end face of the movable mold is a first joint face, and the first joint face is attached to the left end faces of the upper split mold core and the lower split mold core.

Preferably, the movable mould is the same with the cover half shape, the cover half includes the same section of cup jointing of external diameter and sleeve pipe internal diameter, cup joints section right-hand member and linkage segment fixed connection, linkage segment right-hand member and extension fixed connection, cup joint section, linkage segment, extension external diameter reduce in proper order, and cup joint section, linkage segment, extension internal diameter are the same.

The invention has the beneficial effects that:

according to the invention, firstly, a sleeve, a movable die, a fixed die, an upper split die core and a lower split die core are adopted to form a die sleeve, a parison penetrates through the die sleeve, the parison is placed in the die sleeve after the double-balloon sleeve type split die core is closed, a double balloon is formed according to a balloon forming device control program, a blow-molded double balloon can be obtained, when the die is opened, each part of the die can be separated step by step, and the die opening is convenient; secondly, adjusting the position of the mold core joint surface of the double-balloon sleeve type split mold according to specific requirements, and obtaining finished products with different specifications through blow molding; and finally, designing an air hole of the mold core at the joint surface position of the split mold core, so that the influence of the air sealed in the cavity on the forming quality of the double-balloon in the blow molding process in the cavity of the double-balloon sleeve type split mold core is avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a structural cross-sectional view of the present invention;

FIG. 3 is a cross-sectional view of the construction of a built-in parison of the present invention;

FIG. 4 is a schematic view of a quarter section of the present invention;

FIG. 5 is a schematic view of a quarter-section structure of the present invention when the mold is opened;

FIG. 6 is a schematic view of a quarter-section structure of the split mold core of the present invention;

reference numerals: 1. a sleeve; 2. fixing a mold; 201. a third molding surface; 3. moving the mold; 301. a sleeving section; 302. a connecting section; 303. an extension section; 304. a first mating surface; 4. the mold core is split up; 401. a first balloon cavity; 402. a second balloon cavity; 403. air holes; 5. the lower split mold core; 501. a second mating surface; 6. a parison; 7. a main balloon; 8. an auxiliary balloon; 9. a double balloon catheter.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

Example 1

As shown in fig. 1-6, a double-balloon sleeve type split mold core comprises a sleeve 1, a fixed mold 2 is fixedly connected to the right end of the sleeve 1, a movable mold 3 is slidably connected to the left end of the sleeve 1, an upper split mold core 4 and a lower split mold core 5 which are axially slidably connected with the sleeve 1 are arranged between the fixed mold 2 and the movable mold 3 in the sleeve 1, a parison 6 which sequentially penetrates through the movable mold 3, the upper split mold core 4, the lower split mold core 5 and the fixed mold 2 is arranged in the sleeve 1, the outer side of the left part of the fixed mold 2 is fixedly connected with the inner side of the right end of the sleeve 1, a third split mold surface 201 at the left end of the fixed mold 2 is attached to the right ends of the upper split mold core 4 and the lower split mold core 5, a second mold surface 501 is arranged between the upper split mold core 4 and the lower split mold core 5, and the upper split.

When the mould is closed, a second mould closing surface 501 of the upper split mould core 4 is attached to a second mould closing surface 501 of the lower split mould core 5, the outer side sections of the upper split mould core 4 and the lower split mould core 5 are circular, the inner sides of the upper split mould core 4 and the lower split mould core 5 are in the shape of a double-balloon catheter 9, then the combined split mould cores are placed in the sleeve 1, the right end surface of the sleeve 1 is attached to a third mould closing surface 201 at the left end of the fixed mould 2, then the movable mould 3 is inserted into the sleeve 1, the first mould closing surface 304 of the movable mould 3 is attached to the left end of the split mould core, finally the parison 6 is inserted into the parison 6 from one end of the movable mould 3 to be flush with the right end of the fixed mould 2, and the mould can be fixed on blow moulding equipment for blow moulding.

Example 2

As shown in figures 1-6, a double-balloon sleeve type split mold core comprises a sleeve 1, a fixed mold 2 is fixedly connected at the right end of the sleeve 1, a movable mold 3 is connected at the left end of the sleeve 1 in a sliding manner, an upper split mold core 4 and a lower split mold core 5 which are axially connected with the sleeve 1 in a sliding manner are arranged between the fixed mold 2 and the movable mold 3 in the sleeve 1, the movable mold 3 and the upper split mold core 4 are sequentially penetrated through the sleeve 1, the lower split mold core 5 and the parison 6 of the fixed mold 2, a first balloon cavity 401 is arranged on the inner side of the left end of the upper split mold core 4, a second balloon cavity 402 is arranged on the right end of the upper split mold core 4, air holes 403 are arranged at two ends of the upper split balloon, a main balloon 7 of the parison 6 is arranged in the first balloon cavity 401, an auxiliary balloon 8 of the parison 6 is arranged in the second balloon cavity 402, and the air holes 403 at two ends of the upper split mold core 4 are respectively communicated with two ends of the upper split mold core 4 through the inner sides of the first balloon cavity 401 and the second balloon cavity 402.

The parison 6 is placed in a mold and blow molding is carried out, a double-balloon catheter 9 is formed between the movable mold 3, the split mold core, the inner part of the fixed mold 2 and the outer side of the parison 6, a main balloon 7 is formed at the joint of the first balloon cavity 401 and the movable mold 3, an auxiliary balloon 8 is formed at the joint of the second balloon cavity 402 and the fixed mold 2, a catheter connecting the main balloon 7 and the auxiliary balloon 8 is formed in the middle of the split mold core, a connecting section 302 and an extending section of the movable mold 3 form the catheter, during blow molding, gas can be discharged through an air hole 403 and a gap connected between the movable mold 3 and the sleeve 1, and the problem that the forming quality of the double balloons is influenced by the gas sealed in the cavity in the blow molding process of the double-balloon sleeve 1 type split mold core cavity is avoided.

Example 3

As shown in figures 1-6, a double-balloon sleeve type split mold core comprises a sleeve 1, a fixed mold 2 is fixedly connected at the right end of the sleeve 1, a movable mold 3 is slidably connected at the left end of the sleeve 1, an upper split mold core 4 and a lower split mold core 5 which are axially slidably connected with the sleeve 1 are arranged between the fixed mold 2 and the movable mold 3 in the sleeve 1, a parison 6 which sequentially penetrates through the movable mold 3, the upper split mold core 4, the lower split mold core 5 and the fixed mold 2 is arranged in the sleeve 1, the right end surface of the movable mold 3 is a first mold surface 304, the first mold surface 304 is attached to the left end surface of the upper split mold core 4 and the lower split mold core 5, the movable mold 3 and the fixed mold 2 have the same shape, the fixed mold 2 comprises a sleeve section 301 with the same outer diameter as the inner diameter of the sleeve 1, the right end of the sleeve section 301 is fixedly connected with a connecting section 302, the right end of the connecting section 302 is fixedly connected, socket section 301, connecting section 302, extension section 303 are the same internal diameter.

When the mold is opened, under the action of the axial driving force of the balloon forming equipment, the double-balloon sleeve 1 type split mold core moving mold 3 is firstly separated, the rest parts are still integrated, the double-balloon catheter 9, the upper split mold core 4 and the lower split mold core 5 are taken out from the sleeve 1 as a whole, then the upper split mold core 4 is separated from the lower split mold core 5, the double balloons can be taken out, and the mold opening is convenient.

The working principle is as follows: when the double-balloon opening mold is used, the upper split mold core 4 and the lower split mold core 5 are combined, the combined split mold cores are placed in the sleeve 1 fixedly connected with the fixed mold 2, the split mold cores are attached to the third mold closing surface 201 of the fixed mold 2, the movable mold 3 is inserted into the sleeve 1, the first mold closing surface 304 is attached to the left end of the split mold cores, the parison 6 is inserted into the mold, the mold can be fixed in a balloon forming device control program in the prior art to forming a double balloon, the movable mold 3 is taken out when the mold is opened, then the finished product connected with the split mold cores and the double balloon catheter 9 are taken out integrally, the split mold cores are separated, and the finished product can be taken out from the mold conveniently.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A double-balloon sleeve split mold core, comprising a sleeve (1), characterized in that: sleeve pipe (1) right-hand member fixedly connected with cover half (2), sleeve pipe (1) left end sliding connection has movable mould (3), is located be equipped with between cover pipe (1) cover half (2) and movable mould (3) with sleeve pipe (1) endwise slip connection go up run from opposite directions mold core (4), run from opposite directions down mold core (5), be equipped with in sleeve pipe (1) in proper order run through movable mould (3), go up run from opposite directions mold core (4), run from opposite directions down parison (6) of mold core (5), cover half (2).

2. The dual-balloon sleeve split mold core as claimed in claim 1, wherein: the outer side of the left part of the fixed die (2) is fixedly connected with the inner side of the right end of the sleeve (1), and a third die closing surface (201) at the left end of the fixed die (2) is attached to the right ends of the upper split die core (4) and the lower split die core (5).

3. The dual-balloon sleeve split mold core as claimed in claim 1, wherein: and a second joint surface (501) is arranged between the upper split mold core (4) and the lower split mold core (5), and the upper split mold core (4) and the lower split mold core are centrosymmetric about the axis of the upper split mold core and the lower split mold core.

4. A dual-balloon sleeve split mold core as claimed in claim 3, wherein: the inner side of the left end of the upper split mold core (4) is provided with a first balloon cavity (401), the right end of the upper split mold core (4) is provided with a second balloon cavity (402), and both ends of the upper split balloon are provided with air holes (403).

5. The dual-balloon sleeve split mold core as claimed in claim 4, wherein: the first balloon cavity (401) is internally provided with a main balloon (7) of a parison (6), and the second balloon cavity (402) is internally provided with an auxiliary balloon (8) of the parison (6).

6. The dual-balloon sleeve split mold core as claimed in claim 4, wherein: and air holes (403) at two ends of the upper split mold core (4) are respectively communicated with two ends of the upper split mold core (4) from the inner sides of the first balloon cavity (401) and the second balloon cavity (402).

7. The dual-balloon sleeve split mold core as claimed in claim 1, wherein: the right end face of the movable mold (3) is a first joint face (304), and the first joint face (304) is attached to the left end faces of the upper split mold core (4) and the lower split mold core (5).

8. The dual-balloon sleeve split mold core as claimed in claim 1, wherein: the movable mould (3) is the same with cover half (2) shape, cover half (2) including external diameter and the same section of cup jointing (301) of sleeve pipe (1) internal diameter, cup joint section (301) right-hand member and linkage segment (302) fixed connection, linkage segment (302) right-hand member and extension segment (303) fixed connection, the external diameter of cup joint section (301), linkage segment (302), extension segment (303) reduces in proper order, and cup joint section (301), linkage segment (302), extension segment (303) internal diameter are the same.