CN217803052U

CN217803052U - Mold for preparing barrel of injector and barrel of injector

Info

Publication number: CN217803052U
Application number: CN202222047367.1U
Authority: CN
Inventors: 曾智
Original assignee: Suzhou Liankai Precision Mould Co ltd
Current assignee: Suzhou Liankai Precision Mould Co ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-11-15
Anticipated expiration: 2032-08-04

Abstract

The utility model discloses a mould for preparing barrel of syringe, the mould includes: a master die having an insert pin thereon; the male die is provided with an inner core matched with the insert pin, the inner core is provided with a molding section which forms a cavity together with the female die, the molding section is internally provided with a cooling water channel, and when the die is used for preparing the cylinder of the injector, the cooling water channel in the molding section enables the die and a product to be rapidly cooled, so that the molding period of the product is shortened, and the production beat for processing the cylinder of the injector is promoted.

Description

Mold for preparing barrel of injector and barrel of injector

Technical Field

The utility model relates to the technical field of mold, especially, relate to a mould and barrel of syringe for preparing barrel of syringe.

Background

At present, the 0.3ml barrel of insulin syringe is slim structure, and the pinhole diameter sets up to about 0.25mm-0.4mm usually, it is very tiny, only about 3mm to the interior core shaping part diameter of the mould of processing barrel, and be long and thin structure, therefore the barrel is difficult to cool off during the shaping, product shaping cycle is long, however, it is very difficult to process the cold water hole at current interior core shaping part, for example, it is inclined to the side to bore easily to appear through deep hole brill processing cooling water hole, the condition such as bore, can't guarantee the precision of the cooling water hole of processing, so, the inside cooling water hole that does not usually have of the interior core diameter 3mm shaping section of the mould of 0.3ml barrel on the market at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mould and barrel of syringe for preparing the barrel of syringe for solve the problem that the product shaping cycle length that current interior die core shaping part did not set up the cooling water hole and leads to.

In order to realize one of the above utility model purposes, the utility model discloses a mould for preparing the barrel of syringe, the mould includes: a master die having an insert pin thereon; the male die is provided with an inner core matched with the insert pin, the inner core is provided with a forming section forming a cavity together with the female die, and a cooling water channel is arranged in the forming section.

As a further improvement of the present invention, the inner core includes: the forming section is positioned on the base, and the cooling water channel penetrates through the base along the length direction of the base; and the insert is fixed at one end, facing the insert pin, of the base, and the cooling water channel is closed at one end, facing the insert pin, of the base.

As a further improvement, the cooling water channel is formed by machining in a slow-speed wire feeding mode.

As the utility model discloses further improve, have on the mold insert with inlay needle matched with and inlay the pinhole, it follows to inlay the pinhole the length direction of mold insert runs through the setting, inlay the pinhole orientation the one end of cooling water passageway has seal structure.

As the utility model discloses further improve, inlay pinhole through walking a mode machine-shaping slowly.

As the utility model discloses further improve, seal structure specifically is through the laser welding mode shaping.

As a further improvement of the present invention, a mounting hole is provided at one end of the base facing the insert pin, the mounting hole is communicated with the cooling water channel, and the aperture of the mounting hole is larger than the inner diameter of the cooling water channel; the insert is installed in the mounting hole.

As the utility model discloses further improve, the mold insert is fixed in through the laser welding mode in the mounting hole.

As the utility model discloses further improve, the mounting hole orientation the one end of inlaying the needle has the flaring section, connects the mold insert with the solder of mounting hole fill in the flaring section.

The utility model discloses another aspect still discloses the barrel of a syringe, the barrel adopts as above-mentioned arbitrary technical scheme mould preparation form.

The utility model provides a mould for preparing barrel of syringe, have on the public mould with inlay needle matched with inner core, inner core have with the master model forms the shaping section of die cavity jointly, cooling water passageway has in the shaping section during the barrel of mould preparation syringe, cooling water passageway in the shaping section makes mould and product cool off fast, has shortened product shaping cycle, has promoted the production beat of the barrel of processing syringe.

Drawings

FIG. 1 is a schematic cross-sectional view of a mold in accordance with an embodiment of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic view of the base of FIG. 1;

FIG. 4 is a cross-sectional view taken at B-B of FIG. 3;

FIG. 5 is an enlarged view at C of FIG. 4;

fig. 6 is a schematic structural view of a barrel of the injector according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art based on these embodiments are all included in the scope of the present invention.

It will be understood that terms such as "upper," "lower," "outer," "inner," and the like, used herein to denote relative spatial positions, are used for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

Referring to fig. 1 to 5, the utility model discloses a mould 100 for preparing barrel of syringe, the mould includes master model 1 and public mould 2, please refer to fig. 1 and show, inlay needle 3 has on the master model 1, public mould 2 go up have with inlay needle 3 matched with interior core 4, interior core 4 have with master model 1 forms the shaping section 6 of die cavity jointly, cooling water passageway 7 has in the shaping section 6, when the barrel of syringe is prepared to mould 100, cooling water passageway 7 in the shaping section 6 makes mould and product cool off fast, has shortened product shaping cycle, has promoted the production beat of the barrel of processing syringe.

It should be noted that, in the mold 100 for manufacturing a cylinder of an injector of the present invention, except for the inner core, other structures can be adopted to the structure of the existing mold for manufacturing a cylinder of an injector, and thus the description is omitted.

The utility model provides a in master model 1 and the public mould 2 one can set up to the movable mould, another is the cover half, of course, master model 1 and the public mould 2 concrete setting mode do not use this as the limit, can adjust according to practical application's the condition. The utility model discloses in, the die cavity is under female mould 1 and the 2 compound die states of public mould, inlay needle 3 and other shaping structure that set up on female mould 1 with the cavity that is used for the processing product that the 6 cooperations of shaping section of inner core 4 formed, behind the compound die of mould 100, will be heated the melting injection moulding material and pour into in the shaping cavity, can prepare out the processing product of specific shape after the cooling. It will be appreciated that in practice the dimensions of the insert 3 and the inner core 4 will match the dimensions of the barrel of the syringe being prepared.

Further, the inner core 4 includes a base 41 and an insert 42 fixed at one end of the base 41 facing the insert pin 3, the molding section 6 is located on the base 41, the cooling water channel 7 is arranged to penetrate along the length direction of the base 41, the insert 42 seals the cooling water channel 7 at one end of the base 41 facing the insert pin 3, the inner core 4 is arranged as the base 41 and the insert pin 3 which are separated, the cooling water channel 7 arranged to penetrate along the length direction of the base 41 is formed in the base 41 by a slow filament process, and then the insert pin 3 is fixed on the base 41, so that the processing of the cooling water channel 7 in the base 41 is facilitated, the processing precision of the cooling water channel 7 is ensured, the problems that a water cooling hole in the original inner core 4 is a blind hole, and the blind hole is eccentric and punched in the process of processing are solved, and when a cylinder of an injector is prepared by a mold, a product can be rapidly cooled, thereby shortening the molding cycle of the product and improving the production tact.

It can be understood that the utility model provides a base 41 can also include other auxiliary structure, for example, base 41 can also include auxiliary section 8, auxiliary section 8 is located shaping section 6 is kept away from the one end of mold insert 42 can run through in the auxiliary section 8 and set up auxiliary cooling water passageway 9, and auxiliary cooling water passageway 9 communicates with the cooling water passageway 7 of shaping section 6 to the diameter of auxiliary cooling water passageway 9 is greater than the diameter of the cooling water passageway 7 of shaping section 6, thereby when the product shaping, further accelerates mould and product cooling efficiency, has shortened product shaping cycle, has promoted the production beat of the barrel of processing syringe. Of course, the specific structural arrangement of the base 41 is not limited thereto.

Further, the insert 42 has an insert pin hole 10 matching with the insert pin 3, the insert pin hole 10 is arranged to penetrate along a length direction of the insert 42, as shown in fig. 2, one end of the insert pin hole 10 facing the cooling water channel 7 has a sealing structure 11, and one end of the insert pin hole 10 close to the cooling water channel 7 is sealed by the sealing structure 11.

Specifically, in the case of processing the cylinder of the insulin pump, the diameter of the needle insertion hole 10 is only 0.4mm, and the requirement for dimensional accuracy is extremely high. The utility model discloses in, to inlay 3 complex of needle and inlay pinhole 10 setting on mold insert 42, make and inlay pinhole 10 can both guarantee the precision of pinhole through the mode machine-shaping of walking the silk slowly, improved machining efficiency again, solved

current pinhole

10 and 41 integrative adoption of base simultaneously again and must adopt discharge machining and lead to inlaying the problem of pinhole 10 internal carbon deposit.

In addition, it can be understood that the sealing structure 11 is specifically used for sealing one end, close to the cooling water channel 7, of the pin inserting hole 10 by means of laser welding. Of course, the sealing structure 11 is not limited to this configuration, and for example, a sealant or other means capable of preventing the insert hole 10 from communicating with the cooling water passage 7 is used.

Still further, an installation hole 12 is formed in one end, facing the insert pin 3, of the base 41, the installation hole 12 is communicated with the cooling water channel 7, and the diameter of the installation hole 12 is larger than the inner diameter of the cooling water channel 7; the insert 42 is mounted in the mounting hole 12. Specifically, the insert 42 is fixed in the mounting hole 12 by laser welding, so that the reliability of the connection between the insert 42 and the base 41 is ensured. Of course, the fixing connection between the insert 42 and the mounting hole 12 is not limited thereto.

In one embodiment, referring to fig. 5, an end of the mounting hole 12 facing the insert pin 3 has a flared section 121, and the flared section 121 is filled with solder connecting the insert 42 and the mounting hole 12. One end of the mounting hole 12 close to the cooling water channel 7 is provided with a matching section 122, the inner diameter of the matching section 122 of the mounting hole 12 is matched with the outer diameter of the insert 42, the diameter of the matching section 122 is larger than that of the cooling water channel 7, so that when the insert 42 is mounted in the mounting hole 12, a step part is formed on the inner wall of the base 41 at the joint of the matching section 122 and the cooling water channel 7, and the step part is abutted against the end face of the insert 42 facing the cooling water channel 7, thereby ensuring the position accuracy of the insert 42 after mounting.

Furthermore, a section of the needle inserting hole 10 in the insert 42, which is close to the insert pin 3, can be set to be of a bell mouth-shaped structure, so that when the female die 1 and the male die 2 are assembled, the needle inserting hole 10 plays a role in guiding, and the insert pin 3 and the needle inserting hole 10 can be more conveniently aligned, thereby ensuring the precision of a processed product.

The utility model discloses another aspect still provides a barrel 200 of syringe, include barrel base member 20 and be located the pinhole 21 at base member 20 top, please refer to fig. 6 and show, wherein, barrel 200 of syringe is prepared through mould 100 as above, and here, the mould structure is no longer repeated.

The utility model provides a mould 100 for preparing the barrel of syringe, male mould 2 on have with inlay needle 3 matched with interior core 4, interior core 4 have with master model 1 forms the shaping section 6 of die cavity jointly, cooling water channel 7 has in the shaping section 6 during the barrel of mould preparation syringe, cooling water channel 7 in the shaping section 6 makes mould and product cool off fast, has shortened product shaping cycle, has promoted the production beat of the barrel of processing syringe.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. A mold for preparing a barrel of a syringe, characterized in that: the mold comprises:

a master die having an insert pin thereon;

the male die is provided with an inner core matched with the insert pin, the inner core is provided with a forming section forming a cavity together with the female die, and a cooling water channel is arranged in the forming section.

2. The mold for preparing a barrel of a syringe according to claim 1, wherein: the inner core includes:

the forming section is positioned on the base, and the cooling water channel penetrates through the base along the length direction of the base;

and the insert is fixed at one end, facing the insert pin, of the base, and the cooling water channel is closed at one end, facing the insert pin, of the base.

3. The mold for preparing a barrel of a syringe according to claim 2, wherein: the cooling water channel is processed and formed in a slow wire feeding mode.

4. The mold for preparing a barrel of a syringe according to claim 2, wherein: the insert is provided with an insert needle hole matched with the insert needle, the insert needle hole penetrates along the length direction of the insert, and one end of the insert needle hole, facing the cooling water channel, is provided with a sealing structure.

5. The mold for producing a cylinder for a syringe according to claim 4, characterized in that: the pin inserting holes are processed and formed in a slow wire moving mode.

6. The mold for producing a cylinder for a syringe according to claim 4, characterized in that: the sealing structure is formed in a laser welding mode.

7. The mold for preparing a barrel of a syringe according to claim 2, wherein: one end of the base facing the insert pin is provided with a mounting hole, the mounting hole is communicated with the cooling water channel, and the aperture of the mounting hole is larger than the inner diameter of the cooling water channel; the insert is arranged in the mounting hole.

8. The mold for producing a cylinder for a syringe according to claim 7, characterized in that: the insert is fixed in the mounting hole in a laser welding mode.

9. The mold for producing a cylinder for a syringe according to claim 8, characterized in that: and one end of the mounting hole facing the insert pin is provided with a flaring section, and the welding flux connecting the insert and the mounting hole is filled in the flaring section.

10. A barrel for a syringe, comprising: the barrel is formed using a mould for the preparation of a barrel for a syringe according to any one of claims 1 to 9.