CN216992906U

CN216992906U - Tooth-twisting core-pulling structure of injection mold for automobile oil can cover

Info

Publication number: CN216992906U
Application number: CN202220358505.5U
Authority: CN
Inventors: 诸南扬; 王克福; 杨平; 蔡盛
Original assignee: Ningbo Qiaoshi Mould Technology Co ltd
Current assignee: Ningbo Qiaoshi Mould Technology Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-07-19
Anticipated expiration: 2032-02-22

Abstract

The utility model provides a thread twisting and core pulling structure of an injection mold of an automobile oil can cover, which comprises a front mold and a front mold insert fixed on the front mold, wherein a thread twisting and core pulling mechanism is arranged at the center of the front mold insert along the vertical direction, the thread twisting and core pulling mechanism comprises a thread twisting cutter rotatably arranged on the front mold insert and a core pulling shaft capable of sliding relative to the thread twisting cutter, the thread twisting cutter is annular, and a thread twisting part is arranged at the part of the thread twisting cutter, which protrudes out of the front mold insert; the upper end of the core-pulling shaft is sleeved in the thread-cutting knife, a slide insert is fixed at the upper end of the core-pulling shaft and used for forming an internal cutting groove of an oil can cover, and a through groove for the slide insert to pass through is formed in the thread-cutting knife; the utility model provides a thread-twisting core-pulling structure of an injection mold of an automobile oil can cover, which can realize the manufacturing of the automobile oil can cover and has good processing quality.

Description

Tooth-twisting core-pulling structure of injection mold for automobile oil can cover

Technical Field

The utility model relates to the field of injection molds, in particular to a thread-twisting core-pulling structure of an injection mold for an automobile oil can cover.

Background

An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a processing method used for mass production of parts with complex shapes, and particularly relates to a method for injecting heated and melted plastic into a mold cavity from an injection molding machine at high pressure, and obtaining a formed product after cooling and solidification. The injection mold mainly comprises a front mold and a rear mold, wherein the front mold is installed on a fixed seat plate of the injection molding machine, and the rear mold is installed on a movable seat plate of the injection molding machine. During injection molding, the front mold and the rear mold are closed, and plastic enters a mold cavity through a nozzle. When the mold is opened, the front mold and the rear mold are separated, and then the ejection mechanism acts to eject the injection molding piece.

Referring to fig. 1, an oil can cover for an automobile is an important part of an oil can for an automobile, and an inner wall of the oil can cover for an automobile needs to be creased and has an inner cutting groove thereon, so that it is difficult to manufacture the oil can cover using a conventional injection mold and has poor processing quality.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to provide a thread-twisting core-pulling structure of an injection mold of an automobile oil can cover, which can realize the manufacturing of the automobile oil can cover and has good processing quality.

(II) technical scheme

In order to solve the technical problem, the utility model provides a thread twisting and core pulling structure of an injection mold of an automobile oil can cover, which comprises a front mold and a front mold insert fixed on the front mold, wherein a thread twisting and core pulling mechanism is arranged at the center of the front mold insert along the vertical direction, the thread twisting and core pulling mechanism comprises a thread twisting cutter rotatably arranged on the front mold insert and a core pulling shaft capable of sliding relative to the thread twisting cutter, the thread twisting cutter is annular, and a thread twisting part is arranged on the part of the thread twisting cutter protruding out of the front mold insert; the upper end of the core-pulling shaft is sleeved in the thread-cutting knife, a slide insert is fixed at the upper end of the core-pulling shaft and used for forming an internal cutting groove of an oil can cover, and a through groove for the slide insert to pass through is formed in the thread-cutting knife; after injection molding, the core-pulling shaft slides relative to the tooth-twisting cutter, the slide insert retracts into the tooth-twisting cutter to separate from the glue position, and then the tooth-twisting cutter rotates the tooth and gradually separates from the glue position. This injection mold, its simple structure adopts the mechanism of loosing core of hank tooth, can realize the processing of oilcan lid undercut groove and hank tooth, and processingquality is better.

Furthermore, a guide seat is fixed at the lower end of the front die, the lower end of the threading cutter is in threaded connection with the guide seat, and the guide seat is used for guiding the threading cutter to slide downwards when the threading cutter rotates to thread so as to gradually separate from a product glue position. The tooth reaming cutter is connected with the core pulling shaft through a flat key; and during tooth twisting, the core-pulling shaft drives the tooth twisting cutter to rotate the tooth twisting. The flat key connection is adopted, so that the threading cutter can slide relative to the core-pulling shaft, and the core-pulling shaft can drive the threading cutter to rotate to thread.

Further, a rear die is installed on the lower side of the front die, and the lower end of the core pulling shaft is connected with the rear die; the rear die is characterized in that a rear die base plate is arranged between the rear die and the front die, the front die abuts against the rear die base plate, a spring is arranged between the rear die base plate and the rear die, and the spring always enables the rear die base plate to have an upward movement trend. The rear die is provided with a U-shaped seat in a sliding mode, and the rear die base plate is fixed to the upper end of the U-shaped seat; and a core bar is arranged in the core pulling shaft, and the lower end of the core bar is connected with the U-shaped seat.

Further, install actuating mechanism in the back mould, actuating mechanism is including rotating the installation primary gear in the back mould, take out the lower extreme of dabber and install the secondary gear, the primary gear with the secondary gear meshes mutually. A rack is arranged in the rear die in a sliding manner along the horizontal direction and is meshed with the primary gear; and an oil cylinder is arranged on the outer side of the rear die, and the rack is connected with the oil cylinder.

Furthermore, square irons are symmetrically arranged on two sides of the lower end of the rear die, and the U-shaped seat is positioned between the two square irons; a plurality of thimbles are annularly and equidistantly installed in the core rod, a thimble plate is installed between the two square irons, and the lower end of the thimble penetrates through the U-shaped seat to be connected with the thimble plate.

Furthermore, the front die is provided with a plurality of slide positions at the side end of the front die insert in a sliding manner, a front die base plate is arranged on the upper side of the front die in a sliding manner, and an inclined guide post used for driving the slide demoulding is arranged on the front die base plate.

(III) advantageous effects

The utility model provides a thread-twisting core-pulling structure of an injection mold of an automobile oil can cover, which is provided with a thread-twisting core-pulling mechanism, wherein after injection molding is finished, a rear mold base plate, a front mold, a thread-twisting cutter and a product are jointly popped up upwards under the action of a spring, at the moment, a core-pulling shaft slides downwards relative to the thread-twisting cutter, and a slide insert retracts into the thread-twisting cutter and is separated from a glue position of the product; then, a rack is driven by an oil cylinder, the rack drives a core-pulling shaft to rotate by a gear, the core-pulling shaft drives a thread cutter to rotate a thread, and the thread cutter is gradually retracted under the action of a guide seat to be separated from a product glue position, so that thread core pulling is realized; finally, the front die holder plate slides upwards, the inclined guide posts drive the plurality of slide positions to demould, and then the ejector plate drives the ejector pins to eject the product; this injection mold, its simple structure adopts the mechanism of loosing core of hank tooth, can realize the processing of oilcan lid grooving and hank tooth, and processingquality is better.

Drawings

FIG. 1 is a perspective view of an oil can cover with a thread-twisting and core-pulling structure of an injection mold for an automobile oil can cover according to the present invention;

FIG. 2 is a perspective view of a thread-twisting core-pulling structure of an injection mold for an automobile oil can cover according to the present invention;

FIG. 3 is a perspective view of the thread-twisting core-pulling structure of the injection mold for the automobile oil can cover, with the front mold base plate and a part of the slide removed;

FIG. 4 is a schematic structural diagram of a thread-twisting core-pulling structure of an injection mold for an automobile oil can cover according to the present invention;

FIG. 5 is a schematic structural diagram of a thread-twisting and core-pulling mechanism of the thread-twisting and core-pulling structure of an injection mold for an automobile oil can cover according to the present invention;

FIG. 6 is a perspective view of a thread pulling mechanism of the thread pulling structure of the injection mold for the automobile oil can cover of the present invention;

FIG. 7 is an exploded view of the thread-twisting and core-pulling mechanism of the thread-twisting and core-pulling structure of the injection mold for the automobile oil can cover, according to the present invention;

FIG. 8 is an exploded view of a lower end portion of a thread pulling structure of an injection mold for an automobile oil can cover according to the present invention;

the corresponding part names for the various reference numbers in the figures are: 1. a front mold; 2. a front mold insert; 3. a tooth cutter; 4. drawing the mandrel; 5. a slide insert; 6. a guide seat; 7. a flat bond; 8. a rear mold; 9. a rear mold backing plate; 10. a spring; 11. a U-shaped seat; 12. a core bar; 13. a primary gear; 14. a secondary gear; 15. a rack; 16. an oil cylinder; 17. square iron; 18. a thimble; 19. an ejector plate; 20. a row bit; 21. a front mold base plate; 22. an inclined guide post; 23. an oil can cover; 301. a thread twisting part; 302. a through groove.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

Referring to fig. 2 to 8, the utility model provides a thread-twisting core-pulling structure of an injection mold for an automobile oil can cover, which includes a front mold 1 and a front mold insert 2 fixed on the front mold 1, in order to improve injection efficiency, two groups of front mold inserts 2 are arranged on the front mold 1 in this embodiment, and two products can be simultaneously injected at one time.

Referring to fig. 3 to 6, a thread-twisting and core-pulling mechanism is disposed at the center of the front mold insert 2 along the vertical direction, the thread-twisting and core-pulling mechanism includes a thread-twisting cutter 3 rotatably mounted on the front mold insert 2 and a core-pulling shaft 4 capable of sliding relative to the thread-twisting cutter 3, the thread-twisting cutter 3 is annular, a thread-twisting portion 301 is disposed on a portion of the thread-twisting cutter 3 protruding out of the front mold insert 2, and the thread-twisting portion 301 is used for twisting threads. The lower extreme of front mould 1 is fixed with guide holder 6, and the lower extreme and the 6 threaded connection of guide holder of hank tooth sword 3, thereby guide holder 6 is used for the direction hank tooth sword to slide downwards and break away from the product gradually when hank tooth sword rotates the hank tooth.

Referring to fig. 3 to 6, the upper end of the drawing core shaft 4 is sleeved in the threading cutter 3, the upper end of the drawing core shaft 4 is fixed with the slide insert 5, the slide insert 5 is used for forming an inner cutting groove of the oilcan cover 23, and the threading cutter 3 is provided with a through groove 302 for the slide insert 5 to pass through. In the embodiment, the threading cutter 3 is connected with the core-pulling shaft 4 through a flat key 7; when the teeth are twisted, the tooth twisting knife 3 is driven to rotate and twist the teeth through the core drawing shaft 4. After injection molding, the core pulling shaft 4 slides relative to the thread cutter 3, the slide insert 5 retracts into the thread cutter 3 to separate from the glue position, and then the core pulling shaft 4 drives the thread cutter 3 to rotate the thread and gradually separates from the glue position under the action of the guide seat.

Referring to fig. 3 and 7, a rear mold 8 is installed at the lower side of the front mold 1, the front mold 1 can slide relative to the rear mold 8, and the lower end of the drawing core shaft 4 is connected with the rear mold 8 after penetrating through a rear mold backing plate 9. Install back mould backing plate 9 between back mould 8 and the front mould 1, front mould 1 supports and leans on back mould backing plate 9, installs spring 10 between back mould backing plate 9 and the back mould 8, and spring 10 makes back mould backing plate 9 trend of upwards moving all the time. When the die is closed, the spring 10 is compressed, the front die 1, the rear die cushion plate 9 and the rear die 8 are sequentially abutted, and the slide insert 5 penetrates through and protrudes out of the thread cutter 3 to form an inner cutting groove; after the mold is opened, under the action of the spring 10, the rear mold backing plate 9, the front mold 1, the threading cutter 3 and the product are popped up, at the moment, the core-pulling shaft 4 slides downwards relative to the threading cutter 3, and the slide insert 5 retracts into the threading cutter 3 to separate from the glue position. A U-shaped seat 11 is slidably arranged on the rear die 8, and a rear die backing plate 9 is fixed at the upper end of the U-shaped seat 11; a core rod 12 is installed in the core-pulling shaft 4, and the lower end of the core rod 12 penetrates through the rear mold 8 and then is connected with a U-shaped seat 11.

Referring to fig. 2 and 7, a driving mechanism is installed in the rear mold 8, the driving mechanism includes a primary gear 13 rotatably installed in the rear mold 8, a secondary gear 14 is installed at the lower end of the core pulling shaft 4, and the primary gear 13 is meshed with the secondary gear 14. A rack 15 is arranged in the rear die 8 in a sliding manner along the horizontal direction, and the rack 15 is meshed with the primary gear 13; an oil cylinder 16 is arranged on the outer side of the rear die 8, and the rack 15 is connected with the oil cylinder 16.

Referring to fig. 2 to 4, square irons 17 are symmetrically installed on both sides of the lower end of the rear mold 8, and the U-shaped seat 11 is located between the two square irons 17; a plurality of ejector pins 18 are annularly and equidistantly arranged in the core bar 12, an ejector pin plate 19 is arranged between the two square irons 17, and the lower ends of the ejector pins 18 penetrate through the U-shaped seats 11 to be connected with the ejector pin plate 19.

Referring to fig. 2 and 3, a plurality of rows 20 are slidably mounted on the side end of the front mold insert 2 of the front mold 1, a front mold base plate 21 is slidably mounted on the upper side of the front mold 1, and an inclined guide post 22 for driving the rows 20 to demold is disposed on the front mold base plate 21.

After injection molding is finished, under the action of a spring, the rear mold base plate, the front mold, the tooth twisting cutter, the mold core rod and the product are popped up together, the core-pulling shaft slides downwards relative to the tooth twisting cutter, and the slide insert retracts into the tooth twisting cutter and is separated from a product glue position; then, a rack is driven by an oil cylinder, the rack drives a core-pulling shaft to rotate through two gears, the core-pulling shaft drives a thread cutter to rotate a thread, and the thread cutter is gradually retracted under the action of a guide seat to be separated from a product glue position, so that thread-pulling is realized; and finally, the front die holder plate slides upwards, the inclined guide posts drive the plurality of slide positions to be demoulded, and then the ejector plate drives the ejector pins to eject the product.

The utility model provides a pair of car oilcan lid injection mold's hank tooth structure of loosing core, its simple structure adopts hank tooth mechanism of loosing core, can realize the processing of grooving and hank tooth in the oilcan lid to can make the oilcan lid, and processingquality is better.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a car oilcan lid injection mold's hank tooth structure of loosing core, includes front mould (1) and fixes front mould mold insert (2) on front mould (1), its characterized in that: a tooth twisting and core pulling mechanism is arranged at the center of the front mold insert (2) along the vertical direction, the tooth twisting and core pulling mechanism comprises a tooth twisting cutter (3) rotatably mounted on the front mold insert (2) and a core pulling shaft (4) capable of sliding relative to the tooth twisting cutter (3), the tooth twisting cutter (3) is annular, and a tooth twisting part (301) is arranged at the part of the tooth twisting cutter (3) protruding out of the front mold insert (2); the upper end of the core-pulling shaft (4) is sleeved in the threading cutter (3), a slide insert (5) is fixed at the upper end of the core-pulling shaft (4), the slide insert (5) is used for forming an inner cutting groove of an oil can cover, and a through groove (302) which is convenient for the slide insert (5) to pass through is arranged on the threading cutter (3); after injection molding, the core pulling shaft (4) slides relative to the tooth twisting cutter (3), the slide insert (5) retracts into the tooth twisting cutter (3) to separate from the glue position, and then the tooth twisting cutter (3) rotates to twist teeth and gradually separates from the glue position.

2. The thread-twisting core-pulling structure of the injection mold of the automobile oil can cover of claim 1, characterized in that: the lower end of the front die (1) is fixed with a guide seat (6), and the lower end of the threading cutter (3) is in threaded connection with the guide seat (6).

3. The tooth-twisting core-pulling structure of the injection mold for the automobile oil can cover as claimed in claim 1, characterized in that: the tooth reaming cutter (3) is connected with the core pulling shaft (4) through a flat key (7); when the teeth are twisted, the tooth twisting knife (3) is driven to rotate to twist the teeth through the core pulling shaft (4).

4. The tooth-twisting core-pulling structure of the injection mold for the automobile oil can cover as claimed in claim 3, characterized in that: a rear die (8) is mounted on the lower side of the front die (1), and the lower end of the core pulling shaft (4) is connected with the rear die (8); rear mould (8) with install back mould backing plate (9) between front mould (1), front mould (1) supports and leans on back mould backing plate (9), back mould backing plate (9) with install spring (10) between back mould (8), spring (10) make all the time back mould backing plate (9) have the trend of upward movement.

5. The tooth-twisting core-pulling structure of the injection mold of the automobile oil can cover as claimed in claim 4, characterized in that: the rear mould (8) is provided with a U-shaped seat (11) in a sliding manner, and the rear mould backing plate (9) is fixed at the upper end of the U-shaped seat (11); a core rod (12) is installed in the core pulling shaft (4), and the lower end of the core rod (12) is connected with the U-shaped seat (11).

6. The tooth-twisting core-pulling structure of the injection mold for the automobile oil can cover as claimed in claim 4, characterized in that: install actuating mechanism in back mould (8), actuating mechanism is including rotating the installation one-level gear (13) in back mould (8), second grade gear (14) are installed to the lower extreme of taking out dabber (4), one-level gear (13) with second grade gear (14) mesh mutually.

7. The tooth-twisting core-pulling structure of the injection mold of the automobile oil can cover as claimed in claim 6, characterized in that: a rack (15) is arranged in the rear die (8) in a sliding manner along the horizontal direction, and the rack (15) is meshed with the primary gear (13); an oil cylinder (16) is installed on the outer side of the rear die (8), and the rack (15) is connected with the oil cylinder (16).

8. The thread-twisting core-pulling structure of the injection mold of the automobile oil can cover of claim 5, characterized in that: square irons (17) are symmetrically arranged on two sides of the lower end of the rear die (8), and the U-shaped seat (11) is located between the two square irons (17); a plurality of thimbles (18) are annularly and equidistantly arranged in the core bar (12), a thimble plate (19) is arranged between the two square irons (17), and the lower end of the thimble (18) penetrates through the U-shaped seat (11) to be connected with the thimble plate (19).

9. The thread-twisting core-pulling structure of the injection mold of the automobile oil can cover of claim 1, characterized in that: the front die is characterized in that a plurality of slide positions (20) are slidably mounted at the side end of the front die insert (2) of the front die (1), a front die base plate (21) is slidably mounted at the upper side of the front die (1), and an inclined guide post (22) used for driving the slide positions (20) to be demolded is arranged on the front die base plate (21).