CN216884986U

CN216884986U - High-precision injection mold for plastic piston shaft of medical injector

Info

Publication number: CN216884986U
Application number: CN202220057019.XU
Authority: CN
Inventors: 徐黄海
Original assignee: Suzhou Wanxiang Precision Mould Co ltd
Current assignee: Suzhou Wanxiang Precision Mould Co ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-07-05
Anticipated expiration: 2032-01-11

Abstract

The utility model discloses a high-precision injection mold for a plastic piston shaft of a medical injector, which comprises a base, wherein support columns are fixed at the front edge and the rear edge of the lower end surface of the base respectively, a support frame is fixed on the upper end surface of the base, an electric telescopic rod is fixed in the middle of the upper end surface of the support frame, the electric telescopic rod is fixedly connected with a support plate through a piston rod, support rods are fixedly connected at the left edge and the right edge of the lower end surface of the support plate respectively, the lower end surface of each support rod is fixedly connected with an upper mold, and the middle of the upper end surface of each upper mold is fixedly communicated with a water inlet. The utility model relates to the technical field of high-precision injection molds for plastic piston shafts of medical injectors. This high-accuracy injection mold of medical syringe plastic piston axle has solved the inconvenient liquid such as water or coolant liquid to the mould of current high-accuracy injection mold of medical syringe plastic piston axle and has circulated the use and lead to cooling effect greatly reduced, the inconvenient injection molding liquid to the die cavity carries out the shaping problem of rapid cooling.

Description

High-precision injection mold for plastic piston shaft of medical injector

Technical Field

The utility model relates to the technical field of high-precision injection molds for plastic piston shafts of medical injectors, in particular to a high-precision injection mold for a plastic piston shaft of a medical injector.

Background

The plastic piston shaft of the injector is a main part used for pushing the piston to be connected in the inner cavity of the injector in a sliding way, the plastic piston shaft of the injector needs to be subjected to injection molding production molding by using an injection mold in the production process, the injection mold is a tool for producing plastic products, and particularly, the plastic which is melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

But the high-precision injection mold of the plastic piston shaft of the existing medical injector is inconvenient for rapidly cooling and molding the injection liquid in the mold cavity, so that the trouble that the injection liquid is required to be cooled and then the mold can be removed after the liquid is injected and molded into the mold cavity is caused, thereby greatly reducing the production efficiency.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a high-precision injection mold for a plastic piston shaft of a medical injector, which solves the problems that the high-precision injection mold for the plastic piston shaft of the medical injector is inconvenient to recycle liquid such as water or cooling liquid in a mold, so that the cooling effect is greatly reduced, and the injection liquid in a mold cavity is inconvenient to rapidly cool and mold.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a high-accuracy injection mold of medical syringe plastic piston axle, includes the base, edge all is fixed with the support column before and after the terminal surface under the base, the base up end is fixed with the support frame, support frame up end middle part is fixed with electric telescopic handle, electric telescopic handle passes through piston rod fixedly connected with backup pad, the equal fixedly connected with bracing piece in edge is controlled to the terminal surface under the backup pad, terminal surface fixedly connected with goes up the mould under the bracing piece, it has the water inlet to go up the fixed intercommunication in terminal surface middle part of the mould, the even fixed intercommunication of last mould rear end surface has the inlet, base up end middle part fixedly connected with bed die, the edge is provided with the slot about the bed die up end.

Preferably, the edge is fixed with the inserted block about last mould lower extreme face, the inserted block is close to the face each other and evenly is provided with the delivery port, delivery port intercommunication inserted block inner chamber.

Preferably, a water trough is arranged inside the upper end face of the upper die and communicated with the water inlet, and the water trough is a semicircular convex groove.

Preferably, the inside cooling bath that is provided with of bed die up end, cooling bath intercommunication slot, the cooling bath sets up to semicircle concave groove, the terminal surface middle part is provided with the toper leak under the bed die, the terminal surface is located the fixed intercommunication in toper leak below under the bed die has the outlet, toper leak intercommunication cooling bath.

Preferably, the injection molding groove is formed in the rear end face of the upper mold and communicated with the inner cavity of the upper mold, and the liquid inlet is fixedly communicated with the injection molding groove.

Preferably, the middle part of the lower end face of the base is provided with a through groove.

(III) advantageous effects

The utility model provides a high-precision injection mold for a plastic piston shaft of a medical injector. The method has the following beneficial effects:

(1) the high-precision injection mold for the plastic piston shaft of the medical injector is characterized in that a support plate is pushed by a piston rod of an electric telescopic rod, the support plate is pushed by a support rod to move downwards by pressing an upper mold, insert blocks at the left edge and the right edge of the lower end surface of the upper mold are inserted into slot inner cavities at the left edge and the right edge of the upper end surface of the lower mold, the inner cavities of the insert blocks are communicated with a cooling tank through water outlets, then an external water pump is enabled to discharge water into a water discharge tank through a water pipe matched water inlet, the water discharge tank is set to be a semicircular convex groove, so that the water flows into the inner cavities of the insert blocks through the water discharge tank to enter the cooling tank to rapidly cool injection liquid in a film cavity, and the cooling tank is set to be a semicircular concave groove, so that the cooling tank is matched with a conical leak to rapidly collect the water, then a water outlet matched with the water pipe to be communicated with the external water pump, so that the external water pump discharges the injection liquid in the inner cavities of the molds through the water pipe matched water inlet to circularly cool, thereby solved current medical syringe plastics piston axle high accuracy injection mold inconvenient to liquid such as water or coolant liquid in the mould recycle, lead to cooling effect greatly reduced's trouble.

(2) This high-accuracy injection mold of medical syringe plastic piston axle, open electric telescopic handle through personnel, make electric telescopic handle pass through piston rod promotion backup pad, make the backup pad press the mould through the bracing piece again and move downwards, thereby make mould and bed die laminate, then personnel communicate outside infusion pump through the inlet, make outside infusion pump carry out the flowing back to the inslot of moulding plastics through the inlet, make the groove of moulding plastics again and carry out the reposition of redundant personnel to the injection moulding liquid and emit into the mould inner chamber and carry out the liquid of moulding plastics, then communicate outside water pump through water inlet cooperation water pipe, make outside water pump pass through water pipe cooperation water inlet with the row in the water trough of moulding plastics, thereby solved the inconvenient trouble of carrying out rapid cooling shaping to the injection moulding liquid in the mould intracavity of the high-accuracy injection mold of current medical syringe plastic piston axle.

Drawings

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

FIG. 2 is a rear view of the present invention;

FIG. 3 is a schematic view of a half-section of the bottom plate of the present invention;

FIG. 4 is a schematic view of a half-section of the support frame of the present invention;

FIG. 5 is an enlarged view of the area A in FIG. 4 according to the present invention;

FIG. 6 is a schematic bottom view of the present invention;

in the figure: 1. a base; 2. a support pillar; 3. a support frame; 4. an electric telescopic rod; 5. a lower die; 6. a slot; 7. an upper die; 8. inserting a block; 9. a support plate; 10. a support bar; 11. a water inlet; 12. a liquid inlet; 13. a water outlet; 14. injection molding a groove; 15. a water trough; 16. a cooling tank; 17. a conical leak; 18. a water outlet; 19. a through groove.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution:

the first embodiment is as follows:

the utility model provides a high-accuracy injection mold of medical syringe plastic piston axle, including base 1, base 1 lower terminal surface preceding back edge all is fixed with support column 2, base 1 up end is fixed with support frame 3, support frame 3 up end middle part is fixed with electric telescopic handle 4, electric telescopic handle 4 passes through piston rod fixedly connected with backup pad 9, the equal fixedly connected with bracing piece 10 in edge is controlled to the lower terminal surface of backup pad 9, terminal surface fixedly connected with goes up mould 7 under the bracing piece 10, it has water inlet 11 to go up the fixed intercommunication in 7 up end middle parts of mould, it has inlet 12 to go up the even fixed intercommunication of 7 back end surfaces of mould, base 1 up end middle part fixedly connected with bed die 5, the edge is provided with slot 6 about the bed die 5 up end, it is fixed with inserted block 8 to go up 7 lower terminal surface of mould about the edge, inserted block 8 is close to the face each other and evenly is provided with delivery port 13, delivery port 13 intercommunication inserted block 8 inner chambers. The electric telescopic rod 4 is opened by a person, the electric telescopic rod 4 pushes the supporting plate 9 through the piston rod, the supporting plate 9 presses the upper die 7 through the supporting rod 10 to move downwards, so that the upper die 7 is attached to the lower die 5, then the person is communicated with an external liquid injection pump through the liquid inlet 12, the external liquid injection pump discharges liquid into the injection groove 14 through the liquid inlet 12, the injection groove 14 shunts the injection liquid to discharge into the inner cavity of the die for injection liquid, then the external water pump is communicated through the water inlet 11 and the water pipe, the external water pump discharges the water into the water discharge groove 15 through the water pipe and the water inlet 11, thereby solving the problem that the existing medical injector plastic piston shaft high-precision injection die inconveniently carries out quick cooling forming on the injection liquid in the die cavity, the water discharge groove 15 is arranged in the upper end face of the upper die 7, and the water discharge groove 15 is communicated with the water inlet 11, the water trough 15 is a semicircular convex groove.

Example two:

the difference between this embodiment and the first embodiment is: the cooling groove 16 is arranged in the upper end face of the lower die 5, the cooling groove 16 is communicated with the slot 6, the cooling groove 16 is a semicircular concave groove, the middle of the lower end face of the lower die 5 is provided with a conical leakage opening 17, the lower end face of the lower die 5 is positioned below the conical leakage opening 17 and is fixedly communicated with a water outlet 18, and the conical leakage opening 17 is communicated with the cooling groove 16. The supporting plate 9 is pushed by a piston rod of the electric telescopic rod 4, the supporting plate 9 is pushed by a supporting rod 10 to move downwards, the insert blocks 8 at the left edge and the right edge of the lower end surface of the upper die 7 are inserted into the inner cavities of the slots 6 at the left edge and the right edge of the upper end surface of the lower die 5, the inner cavities of the insert blocks 8 are communicated with the cooling groove 16 through the water outlets 13, then an external water pump is used for discharging water into the water channel 15 through the water pipe matched with the water inlet 11, because the water channel 15 is set to be a semicircular convex groove, the water flows into the inner cavities of the insert blocks 8 through the water channel 15 and enters the cooling groove 16 for rapidly cooling and forming the injection liquid in the film cavity, and because the cooling groove 16 is set to be a semicircular concave groove, the cooling groove 16 is matched with the conical leakage 17 for rapidly collecting the water and then the water is communicated with the external water pump through the water outlet 18 matched with the water pipe, so that the external water pump discharges the water into the water channel 15 through the water pipe matched with the water inlet 11 for circularly cooling the injection liquid in the inner cavity of the die, thereby solved the inconvenient liquid such as water or coolant liquid to the mould of current medical syringe plastic piston axle high accuracy injection mold and recycled, leaded to cooling effect greatly reduced's trouble, go up 7 rear end faces of mould inside and be provided with the groove 14 of moulding plastics, the groove 14 inner chamber of mould 7 is gone up in the groove 14 intercommunication of moulding plastics, and the fixed intercommunication of inlet 12 is moulded plastics groove 14, and the terminal surface middle part is provided with logical groove 19 under the base 1.

When the water injection mold is in operation, the supporting plate 9 is pushed by a piston rod of the electric telescopic rod 4 at first, the supporting plate 9 is enabled to press the upper mold 7 to move downwards through the supporting rod 10, the insert block 8 at the left edge and the right edge of the lower end face of the upper mold 7 is enabled to be inserted into the inner cavity of the slot 6 at the left edge and the right edge of the upper end face of the lower mold 5, the inner cavity of the insert block 8 is enabled to be communicated with the cooling groove 16 through the water outlet 13, then the external water pump is enabled to be arranged in the semicircular concave groove through the water pipe matched water inlet 11 to discharge water into the water trough 15, the water trough 15 is arranged in the semicircular convex groove, water flows into the inner cavity of the insert block 8 through the water trough 15 to enter the cooling groove 16 to rapidly cool injection liquid in the film cavity, and the cooling groove 16 is arranged in the semicircular concave groove, so that the cooling groove 16 is enabled to be matched with the conical leakage port 17 to rapidly collect water, then the water outlet 18 is utilized to be matched with the water pipe to be communicated with the external water pump, and the external water pump is enabled to discharge water into the injection liquid in the water trough 15 through the water pipe matched water inlet 11 The high-precision injection mold for the plastic piston shaft of the medical injector has the advantages that the problem that the cooling effect is greatly reduced due to the inconvenience of recycling liquid such as water or cooling liquid in the mold in the conventional high-precision injection mold for the plastic piston shaft of the medical injector is solved.

Claims

1. The utility model provides a high-accuracy injection mold of medical syringe plastic piston axle, includes base (1), its characterized in that: support column (2) all are fixed with in the edge around the terminal surface under base (1), base (1) up end is fixed with support frame (3), support frame (3) up end middle part is fixed with electric telescopic handle (4), electric telescopic handle (4) are through piston rod fixedly connected with backup pad (9), the equal fixedly connected with bracing piece (10) of edge is controlled to terminal surface under backup pad (9), terminal surface fixedly connected with goes up mould (7) under bracing piece (10), it has water inlet (11) to go up the fixed intercommunication in terminal surface middle part of mould (7), it has inlet (12) to go up the even fixed intercommunication of mould (7) rear end, base (1) up end middle part fixedly connected with bed die (5), edge is provided with slot (6) about bed die (5) up end.

2. The high-precision injection mold for the plastic piston shaft of the medical injector according to claim 1, wherein: edge is fixed with inserted block (8) about the terminal surface under upper die (7), inserted block (8) are close to the face each other and evenly are provided with delivery port (13), delivery port (13) intercommunication inserted block (8) inner chamber.

3. The high-precision injection mold for the plastic piston shaft of the medical injector according to claim 1, wherein: a water trough (15) is arranged in the inner portion of the upper end face of the upper die (7), the water trough (15) is communicated with the water inlet (11), and the water trough (15) is a semicircular convex groove.

4. The high-precision injection mold for the plastic piston shaft of the medical injector according to claim 1, wherein: the cooling structure is characterized in that a cooling groove (16) is formed in the inner portion of the upper end face of the lower die (5), the cooling groove (16) is communicated with the slot (6), the cooling groove (16) is formed into a semicircular concave groove, a conical leakage opening (17) is formed in the middle of the lower end face of the lower die (5), a water outlet (18) is fixedly communicated with the lower end face of the lower die (5) and is located below the conical leakage opening (17), and the conical leakage opening (17) is communicated with the cooling groove (16).

5. The high-precision injection mold for the plastic piston shaft of the medical injector according to claim 1, wherein: the injection molding device is characterized in that an injection molding groove (14) is formed in the rear end face of the upper mold (7), the injection molding groove (14) is communicated with an inner cavity of the upper mold (7), and the liquid inlet (12) is fixedly communicated with the injection molding groove (14).

6. The high-precision injection mold for the plastic piston shaft of the medical injector according to claim 1, wherein: the middle of the lower end face of the base (1) is provided with a through groove (19).