CN219311879U

CN219311879U - Injection mold for injector without burr

Info

Publication number: CN219311879U
Application number: CN202223573915.0U
Authority: CN
Inventors: 彭海波; 辜凡
Original assignee: Yunnan Sanxin Medical Technology Co ltd
Current assignee: Yunnan Sanxin Medical Technology Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-07-07
Anticipated expiration: 2032-12-30

Abstract

The utility model relates to the technical field of injection molds of injectors, and discloses an injection mold for an injector without burrs, which comprises an injection molding table, wherein a first threaded rod is rotationally connected to the left inner surface of the injection molding table, a motor is fixedly arranged on the outer surface of the bottom of the injection molding table, a second threaded rod is rotationally connected to the right inner surface of the injection molding table, and a plurality of jacking posts are fixedly connected to the outer surface of the top of a connecting plate. This injection mold for syringe that does not have deckle edge rotates through motor drive first threaded rod, drives the second threaded rod under two initiative bevel gears and two driven bevel gears's effect and rotates to it is ejecting with the shaping syringe to drive the jack-prop, solved current syringe injection mold and mostly need the manual work to carry out the drawing of patterns when the drawing of patterns process, unscrew the bolt on the mould in proper order, extrude the shaping syringe again, this mode operation is complicated, and the work load is big, leads to drawing of patterns inefficiency, and then has reduced production efficiency's problem.

Description

Injection mold for injector without burr

Technical Field

The utility model relates to the technical field of injection molds of injectors, in particular to an injection mold for an injector without burrs.

Background

The injector is a common medical appliance, mainly uses a needle to extract or inject gas or liquid, and is usually injection molded during manufacturing, which is also called injection molding.

The existing injection mold for the injector mostly needs to be manually demolded during the demolding process, bolts on the mold are screwed out in sequence, and then the molding injector is extruded.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an injection mold for a non-burr injector, which solves the problems that the existing injection mold for the injector in the prior art needs to be manually demoulded in the demoulding process, bolts on the mold are screwed out in sequence, and then a formed injector is extruded.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an injection mold for syringe of no burr, includes the platform of moulding plastics, the left side internal surface rotation of moulding plastics the platform is connected with first threaded rod, the bottom surface fixed mounting of moulding plastics the platform has the motor, the output and the first threaded rod fixed connection of motor, the right side internal surface rotation of moulding plastics the platform is connected with the second threaded rod, the bottom surface fixed cover of first threaded rod is equipped with first initiative bevel gear, the right side surface movable engagement of first initiative bevel gear has first driven bevel gear, the one end fixedly connected with pivot of first initiative bevel gear is kept away from to first driven bevel gear, the one end fixedly connected with second driven bevel gear of first driven bevel gear is kept away from to the pivot, the bottom surface fixed cover of second threaded rod is equipped with second initiative bevel gear, second initiative bevel gear with the movable engagement of second driven bevel gear, the surface thread bush of first threaded rod and second threaded rod is equipped with the connecting plate, the top surface fixedly connected with a plurality of jack posts of connecting plate.

Preferably, the top surface fixedly connected with bed die of platform of moulding plastics, a plurality of lower injection cavity has been seted up to the surface of bed die, the top surface fixedly connected with support of platform of moulding plastics, the bottom surface fixed mounting of support has the pneumatic cylinder, the output fixedly connected with of pneumatic cylinder goes up the mould, a plurality of upper injection cavity has been seted up to the internal surface of last mould.

Preferably, the annular embedded grooves are formed in the periphery of the bottom of the upper injection molding cavities, annular elastic bodies are embedded in the annular embedded grooves, the upper injection molding cavities and the lower injection molding cavities are consistent in number, and the positions of the upper injection molding cavities and the lower injection molding cavities are corresponding.

By adopting the technical scheme, when the upper die and the lower die are clung to each other for injection molding, the annular elastic body seals the joint of the upper injection molding cavity and the lower injection molding cavity, and burrs are avoided from being generated in the gap of the overflow joint of molten plastic.

Preferably, the bottom inner surface of the injection molding table is fixedly connected with a supporting plate, and the rotating shaft rotates to penetrate through the outer surface of the supporting plate.

By adopting the technical scheme, the support plate is arranged to support the rotating shaft, and the normal rotation of the rotating shaft is not affected.

Preferably, the directions of the threads formed on the outer surface of the first threaded rod and the outer surface of the second threaded rod are opposite, the threads matched with the first threaded rod are formed on the inner surface of the left side of the connecting plate, and the threads matched with the second threaded rod are formed on the inner surface of the right side of the connecting plate.

By adopting the technical scheme, the motor drives the first threaded rod to rotate, under the mutual cooperation of the two driving bevel gears and the two driven bevel gears, the rotation direction of the second threaded rod is opposite to that of the first threaded rod, and the threads in opposite directions are formed in the first threaded rod and the second threaded rod, so that the connecting plate can be driven to move upwards or downwards simultaneously when the first threaded rod and the second threaded rod rotate.

Preferably, the bottom surface fixedly connected with two telescopic links of support, two the telescopic link is the left and right sides of symmetry pneumatic cylinder, and two the telescopic link keeps away from the surface and the top surface fixed connection of last mould of support.

By adopting the technical scheme, through setting up the telescopic link, when the mould removes on the pneumatic cylinder drive, the telescopic link stretches out and draws back along with it, and then can guarantee the comparatively stable removal of mould.

Preferably, the number of the plurality of jacking posts is consistent with the number of the plurality of lower injection molding cavities, the outer surfaces of the plurality of jacking posts are movably connected with the inner walls of the plurality of lower injection molding cavities, and sealing rubber strips are fixedly connected to the outer surfaces around the tops of the plurality of jacking posts.

By adopting the technical scheme, the molten plastic is prevented from leaking from the gap between the top column and the lower injection molding cavity by the sealing rubber strip.

Preferably, the outer surfaces of the plurality of top posts, the plurality of lower injection molding cavities and the plurality of upper injection molding cavities are coated with a Teflon coating.

By adopting the technical scheme, the injection molding device can effectively prevent the injection molding product from adhering in the upper injection molding cavity, the lower injection molding cavity and the jacking column by arranging the Teflon coating.

Compared with the prior art, the utility model has the beneficial effects that:

1. this injection mold for syringe that does not have deckle edge rotates through motor drive first threaded rod, drives the second threaded rod under two initiative bevel gears and two driven bevel gears's effect and rotates to it is ejecting with the shaping syringe to drive the jack-prop, reached and to carry out the drawing of patterns work fast and conveniently, improved the effect of drawing of patterns efficiency, solved current syringe injection mold and need the manual work to carry out the drawing of patterns when drawing of patterns process mostly, unscrewed the bolt on the mould in proper order, extrude the shaping syringe again, this mode operation is complicated, and the work load is big, leads to drawing of patterns efficiency lower, and then reduced production efficiency's problem.

2. This injection mold for injector of no deckle edge seals through annular elastomer with last injection molding chamber and lower injection molding chamber department, avoids the molten plastic to enter into the gap department between the mould, has reached the effect that can effectively avoid injection molding spare's side edge to form deckle edge, has solved to have had the gap between last mould and the bed die, and the molten plastic easily gets into gap department and forms deckle edge, leads to needing to go out deckle edge operation after the injector molding finishes, has increased work load, has reduced production efficiency's effect.

Drawings

FIG. 1 is a schematic elevational view of the present utility model;

FIG. 2 is a schematic cross-sectional view of an injection molding table and related structures of the injection molding table of the present utility model;

fig. 3 is a schematic view of the bottom structure of the present utility model.

In the figure: 1. an injection molding table; 2. a motor; 3. a first threaded rod; 4. a second threaded rod; 5. a first drive bevel gear; 6. a first driven bevel gear; 7. a rotating shaft; 8. a second driven bevel gear; 9. a second drive bevel gear; 10. a connecting plate; 11. a top column; 12. a lower die; 13. a lower injection cavity; 14. a bracket; 15. a hydraulic cylinder; 16. an upper die; 17. an upper injection cavity; 18. an annular elastomer; 19. a telescopic rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1:

referring to fig. 1-3, an injection mold for a burr-free injector comprises an injection molding table 1, wherein the top outer surface of the injection molding table 1 is fixedly connected with a lower mold 12, the outer surface of the lower mold 12 is provided with a plurality of lower injection molding cavities 13, the top outer surface of the injection molding table 1 is fixedly connected with a bracket 14, the bottom outer surface of the bracket 14 is fixedly provided with a hydraulic cylinder 15, the output end of the hydraulic cylinder 15 is fixedly connected with an upper mold 16, the inner surface of the upper mold 16 is provided with a plurality of upper injection molding cavities 17, the hydraulic cylinder 15 is started, the hydraulic cylinder 15 is in an elongation state, thereby driving the upper mold 16 to move towards the direction close to the lower mold 12 until the upper mold 16 is tightly attached to the lower mold 12, the upper injection molding cavities 17 and the lower injection molding cavities 13 form injection molding cavities, thereby injecting molten plastic for an injection molding injector into the injection molding cavities by injection molding equipment, the outer surface of the bottom of the bracket 14 is fixedly connected with two telescopic rods 19, the two telescopic rods 19 are arranged on the left side and the right side of the symmetrical hydraulic cylinder 15, the outer surfaces of the two telescopic rods 19 far away from the bracket 14 are fixedly connected with the outer surface of the top of the upper die 16, by arranging the telescopic rods 19, when the hydraulic cylinder 15 drives the upper die 16 to move, the telescopic rods 19 stretch along with the upper die 16, so that the upper die 16 can be ensured to move stably, the left inner surface of the injection molding table 1 is rotationally connected with a first threaded rod 3, the outer surface of the bottom of the injection molding table 1 is fixedly provided with a motor 2, the output end of the motor 2 is fixedly connected with the first threaded rod 3, after a certain time, molten plastics form an injector finished product in an injection molding cavity, after molding is finished, the motor 2 is started to drive the first threaded rod 3 to rotate, the right inner surface of the injection molding table 1 is rotationally connected with a second threaded rod 4, the bottom end outer surface fixed sleeve of the first threaded rod 3 is provided with a first drive bevel gear 5, the first drive bevel gear 5 is driven to rotate when the first threaded rod 3 rotates, the right outer surface of the first drive bevel gear 5 is movably meshed with a first driven bevel gear 6, one end of the first driven bevel gear 6 far away from the first drive bevel gear 5 is fixedly connected with a rotating shaft 7, the first drive bevel gear 5 rotates to drive the first driven bevel gear 6 and the rotating shaft 7 to rotate, one end of the rotating shaft 7 far away from the first driven bevel gear 6 is fixedly connected with a second driven bevel gear 8, the rotating shaft 7 drives the second driven bevel gear 8 to rotate, the bottom end outer surface fixed sleeve of the second threaded rod 4 is provided with a second drive bevel gear 9, the second drive bevel gear 9 is movably meshed with the second driven bevel gear 8, the outer surface thread sleeve of the first threaded rod 3 and the second threaded rod 4 is provided with a connecting plate 10, the top outer surface fixed connection of the connecting plate 10 is provided with a plurality of top posts 11, the outer surface of the first threaded rod 3 is opposite to the thread direction of the second threaded rod 4, the left inner surface of the connecting plate 10 is provided with threads matched with the first threaded rod 3, the right inner surface of the connecting plate 10 is provided with threads of the first threaded rod 3, the right inner surface of the connecting plate 10 is provided with the second threaded rod 4 is matched with the second threaded rod 3 to rotate in the opposite directions of the second threaded rod 4, and the two threaded rods 4 are driven to rotate in the opposite directions of the first threaded rod 4 to rotate, simultaneously, when the first threaded rod 4 is driven to rotate, and the second threaded rod 4 is driven in opposite directions to rotate, and the first threaded rod 4 is driven to rotate in opposite directions, and rotate and move up and rotate in the direction is driven to rotate and up and down in rotation, and opposite to rotate and opposite direction and move up and to the direction and to rotate and move respectively, the connecting plate 10 drives the ejection column 11 to enable the ejection column 11 to eject the finished product of the injector out of the injection molding cavity.

Working principle: when the utility model is used, the hydraulic cylinder 15 is started, the hydraulic cylinder 15 is in an extension state, thereby driving the upper die 16 to move towards the direction close to the lower die 12, the telescopic rod 19 is also extended until the upper die 16 is clung to the lower die 12, thereby forming an injection molding cavity between the upper injection molding cavity 17 and the lower injection molding cavity 13, thereby injecting molten plastic for an injection molding injector into the injection molding cavity by injection molding equipment, forming an injector finished product in the injection molding cavity after a certain time, starting the motor 2 after molding, driving the first threaded rod 3 to rotate by the motor 2, driving the first drive bevel gear 5 to rotate by the first threaded rod 3, and actively meshing the first drive bevel gear 5 with the first driven bevel gear 6, the first driving bevel gear 5 rotates to drive the first driven bevel gear 6 and the rotating shaft 7 to rotate, and then drives the second driven bevel gear 8 to rotate, the second driven bevel gear 8 is movably meshed with the second driving bevel gear 9, so that the second driven bevel gear 8 drives the second driving bevel gear 9 to rotate, finally the second threaded rod 4 rotates, the connecting plate 10 is driven to drive the jacking column 11 to move upwards, and the jacking column 11 ejects a finished product of the injection molding cavity when moving upwards, so that demolding is completed. The demolding device has the advantages that demolding operation can be quickly and conveniently performed, the demolding efficiency is improved, the problem that the existing injection mold for the injector needs to be manually demolded in the demolding process is solved, bolts on the mold are screwed out in sequence, the molded injector is extruded, the operation is complex, the workload is large, the demolding efficiency is low, and the production efficiency is reduced is solved.

Example 2:

referring to fig. 1-3, annular embedded grooves are formed around the bottom of the upper injection cavities 17, annular elastic bodies 18 are embedded in the annular embedded grooves, the annular elastic bodies 18 are thermosetting elastic bodies or thermoplastic elastic bodies, the upper injection cavities 17 and the lower injection cavities 13 are identical in number, the positions of the upper injection cavities 17 and the lower injection cavities 13 correspond to each other, when the hydraulic cylinder 15 drives the upper mold 16 to press the lower mold 12, the annular elastic bodies 18 at the upper injection cavities 17 at the bottom of the upper mold 16 seal the joints of the upper injection cavities 17 and the lower injection cavities 13, so that burrs are avoided from being generated due to overflow of molten plastic from the joints of the upper injection cavities 17 and the lower injection cavities 13 during injection molding, and the burrs are avoided.

Working principle: when the hydraulic cylinder 15 drives the upper die 16 to tightly press the lower die 12, the annular elastomer 18 at the upper injection cavity 17 at the bottom of the upper die 16 seals the joint of the upper injection cavity 17 and the lower injection cavity 13, so that burrs are avoided when molten plastic overflows from the joint of the upper injection cavity 17 and the lower injection cavity 13 during injection, and the burrs are avoided. The effect that the side edges of the injection molding part can be effectively avoided to form burrs is achieved, the problem that gaps exist between the upper die 16 and the lower die 12 is solved, molten plastic is easy to enter the gaps to form burrs, the burrs are required to be removed after the injection molding part is molded, the workload is increased, and the production efficiency is reduced.

The motor 2 and the hydraulic cylinder 15 are electrically connected with an external power supply, and the motor 2 and the hydraulic cylinder 15 are provided with control switches matched with the motor 2 and the hydraulic cylinder, and the positions of the control switches can be used for selecting the installation positions according to actual requirements.

The above-mentioned devices related to the use of the apparatus are different in terms of choice and use according to the actual implementation, and with reference to various parameters, the function of the device according to use corresponds to the effect achieved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an injection mold for syringe of no burr, includes injection molding platform (1), its characterized in that: the utility model discloses a high-speed motor drive mechanism for the injection molding machine, including injection molding machine (1), first threaded rod (3) is connected with in the left side internal surface rotation of injection molding machine (1), bottom surface fixed mounting of injection molding machine (1) has motor (2), the output and the first threaded rod (3) fixed connection of motor (2), the right side internal surface rotation of injection molding machine (1) is connected with second threaded rod (4), the bottom surface fixed cover of first threaded rod (3) is equipped with first drive bevel gear (5), the right side surface movable engagement of first drive bevel gear (5) has first driven bevel gear (6), the one end fixedly connected with pivot (7) of first drive bevel gear (5) are kept away from in first driven bevel gear (6), the one end fixedly connected with second driven bevel gear (8) of first driven bevel gear (6) is kept away from in pivot (7), the bottom surface fixed cover of second drive bevel gear (9) is equipped with second threaded rod (8) movable engagement, the surface fixed connection of first drive bevel gear (3) and second drive bevel gear (4) is equipped with top connection plate (10), a plurality of top post fixed connection plate (10).

2. An injection mold for a flawless injector according to claim 1, characterized in that: the injection molding machine comprises an injection molding table (1), wherein a lower mold (12) is fixedly connected to the outer surface of the top of the injection molding table (1), a plurality of lower injection molding cavities (13) are formed in the outer surface of the lower mold (12), a support (14) is fixedly connected to the outer surface of the top of the injection molding table (1), a hydraulic cylinder (15) is fixedly arranged on the outer surface of the bottom of the support (14), an upper mold (16) is fixedly connected to the output end of the hydraulic cylinder (15), and a plurality of upper injection molding cavities (17) are formed in the inner surface of the upper mold (16).

3. An injection mold for a flawless injector according to claim 2, characterized in that: annular embedded grooves are formed in the periphery of the bottom of each upper injection molding cavity (17), annular elastic bodies (18) are embedded in the annular embedded grooves, the upper injection molding cavities (17) and the lower injection molding cavities (13) are consistent in number, and the upper injection molding cavities (17) and the lower injection molding cavities (13) are corresponding in position.

4. An injection mold for a flawless injector according to claim 1, characterized in that: the bottom inner surface of the injection molding table (1) is fixedly connected with a supporting plate, and the rotating shaft (7) rotates to penetrate through the outer surface of the supporting plate.

5. An injection mold for a flawless injector according to claim 1, characterized in that: the external surface of the first threaded rod (3) and the external surface of the second threaded rod (4) are provided with threads in opposite directions, the left internal surface of the connecting plate (10) is provided with threads matched with the first threaded rod (3), and the right internal surface of the connecting plate (10) is provided with threads matched with the second threaded rod (4).

6. An injection mold for a flawless injector according to claim 2, characterized in that: the bottom surface fixedly connected with two telescopic links (19) of support (14), two telescopic links (19) are the left and right sides of symmetry pneumatic cylinder (15), and two the surface that support (14) was kept away from to telescopic links (19) is fixed with the top surface of last mould (16).

7. An injection mold for a flawless injector according to claim 2, characterized in that: the number of the plurality of jacking posts (11) is consistent with the number of the plurality of lower injection molding cavities (13), the outer surfaces of the plurality of jacking posts (11) are movably connected with the inner walls of the plurality of lower injection molding cavities (13), and sealing rubber strips are fixedly connected to the outer surfaces around the top of the plurality of jacking posts (11).

8. An injection mold for a flawless injector according to claim 2, characterized in that: the outer surfaces of the plurality of jacking posts (11) and the lower injection molding cavities (13) and the upper injection molding cavities (17) are coated with Teflon coatings.