CN212072834U

CN212072834U - Multi-cavity internal thread injection mold

Info

Publication number: CN212072834U
Application number: CN202020326753.2U
Authority: CN
Inventors: 徐浩宇
Original assignee: Jiangsu Aiyuan Medical Technology Corp
Current assignee: Jiangsu Yangzi River Medical Technology Co ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-12-04
Anticipated expiration: 2030-03-17

Abstract

The utility model discloses a many caves internal thread injection mold, including front mould and the back mould that matches from top to bottom, be equipped with preceding mold core on the front mould, be equipped with the screw thread mold core on the preceding mold core, be equipped with back mold core on the back mould, be equipped with the runner on the back mold core, preceding mold core, screw thread mold core and back mold core merge to form the die cavity of moulding plastics, still include drive mechanism and rotary mechanism, drive mechanism and rotary mechanism all set up in the front mould, drive mechanism drives rotary mechanism rotatory, rotary mechanism is connected with the screw thread mold core, still includes the feed port, the feed port is located on the front mould core. The utility model has the advantages that: the mold adopts a transmission system, and the threaded mold core is rotated in the mold opening process, so that the threaded mold core and a product can be effectively separated, the demolding efficiency of the internal thread injection mold is improved, and the production cost is reduced.

Description

Multi-cavity internal thread injection mold

Technical Field

The utility model belongs to the technical field of injection mold, concretely relates to many caves internal thread injection mold.

Background

The injection mold is one of the most common production materials in the injection molding process, the raw material and processing cost of the injection mold are relatively low, and the market demand is large; the mold mainly comprises a pouring system, a temperature adjusting system, a forming part and a structural part. The injection mold is generally divided into a movable mold and a fixed mold, wherein the movable mold is arranged on a movable template of the injection molding machine, and the fixed mold is arranged on a fixed template of the injection molding machine. In the injection molding process, a pouring system and a cavity are formed after die assembly; and after the injection molding is finished and the die is opened, ejecting the product.

Some injection molds require internal threads to be formed to facilitate the attachment of the article to other components. In the traditional internal thread injection mold, the internal thread position is difficult to separate from the mold after injection molding, the efficiency is low, and automatic demolding cannot be realized; although some internal thread injection molding parts on the market are improved, the problems of low demoulding success rate and low efficiency of the internal thread injection molding parts still cannot be solved, and a joint line exists on the outer surface of an injection molding product.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a following technical scheme: the utility model provides a many caves internal thread injection mold, includes front mould and the back mould that matches from top to bottom, be equipped with preceding mold core on the front mould, be equipped with the screw thread mold core on the preceding mold core, be equipped with the back mold core on the back mould, be equipped with the runner on the back mold core, preceding mold core, screw thread mold core and back mold core merge to form the die cavity of moulding plastics, still include drive mechanism and rotary mechanism, drive mechanism and rotary mechanism all set up in the front mould, drive mechanism drives rotary mechanism rotatory, rotary mechanism is connected with the screw thread mold core, still includes the feed port, the feed port is located preceding mold core.

Furthermore, the front mold core is positioned on the inner side of the rear mold core after being closed, and the injection molding cavity is integrally positioned in the rear mold core.

Furthermore, the front mold comprises a top plate, a front supporting plate and a front mold plate from top to bottom according to a mold closing state, a positioning opening is formed in the top plate, a rack channel is formed in the side face of the front supporting plate and leads to the transmission mechanism, and the front mold core is arranged on the front mold plate.

Further, the transmission mechanism comprises a gear and a bearing, the gear and the bearing are connected together up and down, the gear is communicated with the rack channel, and the bearing is movably connected with a rotating mechanism.

Furthermore, the rotating mechanism is a square connecting piece, the front end of the square connecting piece is connected with the bearing, and the rear end of the square connecting piece is connected with the front mold core.

Furthermore, the rear mold comprises a rear mold plate, a rear supporting plate and a bottom plate from top to bottom according to a mold closing state, a cold water channel is further arranged in the rear mold plate, the rear mold core is arranged on the rear mold plate, an ejection mechanism is arranged in an inner cavity of the rear supporting plate, and the bottom plate is fixed to the bottom of the rear supporting plate through bolts.

Further, ejection mechanism includes thimble, reset spring, push pedal, thimble and the coaxial setting of screw thread mold core, the top through connection in back mold core of thimble, back template and push pedal are connected respectively to both ends about the reset spring.

Furthermore, the opposite surfaces of the front die and the rear die are respectively provided with a guide pillar and a guide sleeve which are matched with each other.

The utility model has the advantages that:

1. the mold adopts a transmission system, and the threaded mold core is rotated by the rotating mechanism in the mold opening process, so that the threaded mold core and a product can be effectively separated, the demolding efficiency of the internal thread injection mold is improved, and the production cost is reduced.

2. The automatic rotation screw thread mold core mode that this mould adopted, screw thread mold core and thimble direction unanimity, whole die cavity all on the mold core of back, and the overall structure connection can not disperse after the die sinking, and can not bring loaded down with trivial details step for the compound die, makes the product surface that generates have no compound die line, an organic whole nature is good.

Drawings

Fig. 1 is a schematic diagram of the rear section of the mold closing of the present invention.

Fig. 2 is a perspective view of a front mold.

Fig. 3 is a perspective view of a rear mold.

In the figure: 1. a front mold; 2. a rear mold; 3. a front mold core; 4. a threaded mold core; 5. a rear mold core; 6. a flow channel; 7. a feed port; 8. a top plate; 9. a front support plate; 10. a front template; 11. positioning the opening; 12. a rack road; 13. a gear; 14. a bearing; 15. a square connector; 16. a rear template; 17. a rear support plate; 18. a base plate; 19. a cold water channel; 20. a thimble; 21. a return spring; 22. pushing the plate; 23. a guide post; 24. and (4) guiding a sleeve.

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, a multi-cavity internal thread injection mold comprises a front mold 1 and a rear mold 2 which are matched up and down, the front mold 1 comprises a top plate 8, a front supporting plate 9 and a front mold plate 10 from top to bottom according to a mold closing state, a positioning opening 11 is arranged on the top plate 8, a rack passage 12 is arranged on the side surface of the front supporting plate 9, the rack passage 12 leads to a transmission mechanism, a front mold core 3 is arranged on the front mold plate 10, a thread mold core 4 is arranged on the front mold core 3, the rear mold 2 comprises a rear mold plate 16, a rear supporting plate 17 and a bottom plate 18 from top to bottom according to the mold closing state, the rear mold core 5 is arranged on the rear mold plate 16, an ejection mechanism is arranged in an inner cavity of the rear supporting plate 17, the bottom plate 18 is fixed at the bottom of the rear supporting plate 17 through bolts, four guide posts 24 are arranged around the bottom of the front mold plate 10, a guide sleeve 25 matched with the guide posts 24 is arranged around, the front mold core 3 and the threaded mold core 4 on the front mold plate 10 are positioned on the inner side of the rear mold core 5 after mold closing, the front mold core 3, the threaded mold core 4 and the rear mold core 5 jointly form an injection molding cavity, the front mold core 3 is provided with a feed hole 7, the surface of the rear mold core 5 is provided with a flow channel 6, and the injection molding cavity is integrally positioned in the rear mold core 5, so that the outer surface of a generated product has no mold closing line and is good in integrity. The upper die is internally provided with a transmission mechanism and a rotating mechanism, the transmission mechanism is preferably a gear 13 and a bearing 14, the gear 13 and the bearing 14 are connected up and down and arranged in the top plate 8 and the supporting plate, the gear 13 is communicated with the rack passage 12, the gear 13 is driven to rotate by winding the rack passage 12, the bearing 14 is movably connected with the rotating mechanism, the rotating mechanism is preferably a square connecting piece 15, the front end of the square connecting piece 15 is movably connected with the bearing 14, the rear end of the square connecting piece passes through the upper die core and the threaded die core 4 to be arranged together in a penetrating way, an ejection mechanism is arranged in the inner cavity of the rear supporting plate 17 of the rear die 2 and comprises an ejector pin 20, a return spring 21 and a push plate 22, the ejector pin 20 and the threaded die core 4 are coaxially arranged, the top of the ejector pin 20 is connected with the rear die core 5 in a penetrating way, the upper end, the ejection mechanism is used for ejecting the product, and a cold water channel 19 is also arranged in the rear template 16 and used for cooling the raw material injected into the mold core.

The utility model discloses a compound die drawing of patterns process does: the method comprises the steps of moving a rear die 2 forwards, butting a guide post 24 on the front die 1 with a guide sleeve 25 on the rear die 2, attaching a front die core 3 and a rear die core 5 together to complete die assembly, then abutting an injection molding machine head against a positioning port 11 to inject raw materials into a feed hole 7, draining the raw materials to a threaded die core 4 through a flow channel 6, cooling the raw materials through cooling circulating water in a cooling water channel 19, then opening the die, driving a gear 13 to rotate by a chain in a rack channel 12 during die opening so that the gear 13 drives a bearing 14 to rotate, then rotating a square connecting piece 15 by the bearing 14, and finally rotating the threaded die core 4 by the square connecting piece 15 so that the threaded die core 4 is separated from a product. After the mold is opened, the product is left on the rear mold core 5, and the push plate 22 is pushed to compress the return spring 21 and push the ejector pin 20 to eject the product. The utility model has the advantages of improve internal thread injection mold's drawing of patterns efficiency, reduction in production cost, make produced goods surface do not have joint line, an organic whole nature is good.

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

Claims

1. The utility model provides a many caves internal thread injection mold which characterized in that: including front mould (1) and back mould (2) that match from top to bottom, be equipped with preceding mold core (3) on front mould (1), be equipped with screw thread mold core (4) on preceding mold core (3), be equipped with back mold core (5) on back mould (2), be equipped with runner (6) on back mold core (5), preceding mold core (3), screw thread mold core (4) and back mold core (5) are merged and are constituteed the die cavity of moulding plastics, still include drive mechanism and rotary mechanism, drive mechanism and rotary mechanism all set up in front mould (1), drive mechanism drives rotary mechanism rotatory, rotary mechanism is connected with screw thread mold core (4), still includes feed port (7), feed port (7) are located preceding mold core (3).

2. The multi-cavity internal thread injection mold of claim 1, wherein: the front mold core (3) is positioned on the inner side of the rear mold core (5) after being closed, and the injection molding cavity is positioned in the rear mold core (5).

3. The multi-cavity internal thread injection mold of claim 1, wherein: the front mold (1) comprises a top plate (8), a front supporting plate (9) and a front mold plate (10) from top to bottom according to a mold closing state, a positioning opening (11) is formed in the top plate (8), a rack passage (12) is formed in the side face of the front supporting plate (9), the rack passage (12) leads to a transmission mechanism, and the front mold core (3) is arranged on the front mold plate (10).

4. The multi-cavity internal thread injection mold of claim 3, wherein: the transmission mechanism comprises a gear (13) and a bearing (14), the gear (13) and the bearing (14) are connected together up and down, the gear (13) is communicated with the rack channel (12), and a rotating mechanism is movably connected in the bearing (14).

5. The multi-cavity internal thread injection mold of claim 4, wherein: the rotary mechanism is a square connecting piece (15), the front end of the square connecting piece (15) is connected with the bearing (14), and the rear end of the square connecting piece is connected with the front mold core (3).

6. The multi-cavity internal thread injection mold of claim 1, wherein: the rear mold (2) comprises a rear mold plate (16), a rear supporting plate (17) and a bottom plate (18) from top to bottom according to a mold closing state, the rear mold core (5) is arranged on the rear mold plate (16), a cold water channel (19) is further arranged in the rear mold plate (16), an ejection mechanism is arranged in an inner cavity of the rear supporting plate (17), and the bottom plate (18) is fixed to the bottom of the rear supporting plate (17) through bolts.

7. The multi-cavity internal thread injection mold of claim 6, wherein: the ejection mechanism comprises an ejector pin (20), a return spring (21) and a push plate (22), the ejector pin (20) and the threaded mold core (4) are coaxially arranged, the top of the ejector pin (20) is connected to the rear mold core (5) in a penetrating mode, and the upper end and the lower end of the return spring (21) are respectively connected with the rear mold plate (16) and the push plate (22).

8. The multi-cavity internal thread injection mold of claim 1, wherein: and the opposite surfaces of the front die (1) and the rear die (2) are respectively provided with a guide post (24) and a guide sleeve (25) which are matched with each other.