CN221985750U - Multi-side drawing block injection molding structure for inner threaded opening of plastic cup cover - Google Patents

Abstract

The application relates to a multi-side drawing block injection molding structure of an internal threaded opening of a plastic cup cover, which comprises a runner plate, a core plate and a cavity plate, wherein the core plate is connected onto a flowing plate in a sliding manner along a mold opening direction, the injection molding structure also comprises an internal threaded molding mechanism, the internal threaded molding mechanism comprises a conical block, a plurality of first threaded core blocks, a plurality of second threaded core blocks and a first driving assembly, the conical block is fixedly connected onto the runner plate, the plurality of first threaded core blocks are respectively connected onto the conical block in a sliding manner along a mold opening direction oblique to a mold, the plurality of second threaded core blocks are respectively connected onto the core plate in a sliding manner along a mold opening direction perpendicular to the mold, the conical block is used for driving the sliding of the first threaded core blocks, and the first driving assembly is used for driving the sliding of the second threaded core blocks. Through the die sinking motion of mould, make first screw thread pellet and second screw thread pellet break away from the screw thread face of injection moulding back product respectively, the injection moulding of injection moulding product internal thread of being convenient for has reduced the manufacturing cost of mould.

Description

Multi-side drawing block injection molding structure for inner threaded opening of plastic cup cover

Technical Field

The utility model relates to the field of injection molding, in particular to an injection molding structure of a multi-side drawing block of an internal thread opening of a plastic cup cover.

Background

The threads on the plastic product are divided into external threads and internal threads, the external threads are generally stripped by adopting a sliding block, and the internal threads are stripped by adopting a twisting tooth.

The utility model discloses an internal thread injection mold with the publication number of CN218366263U, which relates to the technical field of injection molds and comprises an upper mold, a lower mold, a glue feeding system and an ejection mechanism, wherein the upper mold and the lower mold are mutually butted, the glue feeding system is arranged on the upper mold, the ejection mechanism is arranged on the lower mold, an upper mold core is fixedly arranged on the upper mold, a lower mold core is fixedly arranged on the lower mold, the upper mold core and the lower mold core are mutually covered to form a mold cavity for molding a product, the glue feeding system is in butt joint with the upper mold core, and the ejection mechanism is in butt joint with the lower mold core; the upper die is provided with a screw core and a driving device, the screw core is in butt joint with the die cavity, the driving device is used for driving the screw core to perform linear motion on the upper die, the screw core is in butt joint with the die cavity or separated from the die cavity, and the side wall of the screw core is provided with threads for forming internal threads of a product.

According to the injection mold in the technical scheme, the screw core is required to be separated from a product through the power piece, the injection mold comprises a rack which is reciprocated by means of an air cylinder or an air cylinder, and the screw core is rotated through a gear; when using hydraulic, pneumatic or electric motors (driven by variable speed motors to rotate gears and dies) as the power source, a control device is required. The screw core and the product cannot be separated directly through the die opening movement of the die, so that the die is large in volume and the production cost of the die is increased.

Disclosure of utility model

In order to facilitate injection molding of internal threads of injection products, the application provides an injection molding structure of a multi-side drawing block of an internal thread opening of a plastic cup cover.

The application provides a multi-side drawing block injection molding structure of an internal thread opening of a plastic cup cover, which adopts the following technical scheme:

The utility model provides a plastics bowl cover internal thread mouth multi-side is taken out piece injection moulding structure, includes runner board, core and die cavity board, core is along die sinking direction sliding connection on flowing to the board, still includes internal thread forming mechanism, internal thread forming mechanism includes toper piece, a plurality of first screw thread core, a plurality of second screw thread core and first drive assembly, toper piece fixed connection is on the runner board, a plurality of first screw thread core is along the die sinking direction sliding connection who inclines to the mould on the toper piece respectively, a plurality of second screw thread core is along the die sinking direction sliding connection who is perpendicular to the mould on the core respectively, a plurality of first screw thread core and a plurality of second screw thread core are the interval setting respectively, the toper piece is used for driving the slip of first screw thread core, first drive assembly is used for driving the slip of second screw thread core.

By adopting the technical scheme, when the mold is opened, the runner plate drives the conical block to slide towards one side far away from the cavity plate, and the plurality of first thread core blocks slide towards one side far away from the product, because the first thread core blocks slide along the direction inclined to the mold opening direction of the mold, the plurality of first thread core blocks slide towards one side of the axis of the thread surface of the product relative to the product, so that the first thread core blocks are separated from the surface of the thread surface, and after the first thread core blocks are separated from the thread surface of the product, the plurality of second thread core blocks are driven by the first driving component to slide towards one side of the axis of the thread surface of the product, so that the second thread core blocks are separated from the thread surface of the product after injection molding; through the die sinking motion of mould, make first screw thread pellet and second screw thread pellet break away from the screw thread face of injection moulding back product respectively, the injection moulding of injection moulding product internal thread of being convenient for has reduced the manufacturing cost of mould.

Preferably, the first driving component comprises a first inclined guide post and a limiting block, the limiting block is slidably connected to the core plate along a die opening direction perpendicular to the die, one end of the limiting block is fixedly connected to the second threaded core block, one end of the first inclined guide post is fixedly connected to the runner plate, and one end, far away from the runner plate, of the first inclined guide post is penetrated and slidably connected to the limiting block.

Through adopting above-mentioned technical scheme, when the mould is opened, the runner board drives first oblique guide pillar and slides towards one side of keeping away from the die cavity board, contacts with the stopper inclined plane through the inclined plane of first oblique guide pillar, forms tangential force, makes the stopper drive the axis one side of second screw thread pellet towards the product screw thread face and slides.

Preferably, the conical block is provided with a sliding rail, the sliding rail is provided with a limiting groove, the first threaded core block is slidably connected to the sliding rail, the first threaded core block is provided with a limiting column, and the limiting column is slidably connected to the limiting groove.

By adopting the technical scheme, the sliding direction and the sliding distance of the first threaded core blocks are limited, and the possibility that the final sliding distances of the plurality of first threaded core blocks are different when the conical blocks drive the plurality of first threaded core blocks is reduced.

Preferably, the first threaded core block is arranged in a tapered shape from one end close to the runner plate to one end far away from the runner plate.

By adopting the technical scheme, after the first threaded core block is demolded, a sliding space is reserved for the second threaded core block.

Preferably, a cooling water channel is formed in the runner plate, a cooling groove is formed in the conical block, and the cooling groove is communicated with the cooling water channel.

Through adopting above-mentioned technical scheme, at the in-process of moulding plastics, cooling water flows through the cooling tank, carries out the cold cutting to the toper piece, carries out the heat conduction through the toper piece in the contact of first screw thread pellet and second screw thread pellet, cools off first screw thread pellet and second screw thread pellet.

Preferably, the surface forming mechanism is used for forming the outer side of the product, the surface forming mechanism comprises a first forming block, a second forming block and a second driving assembly, the first forming block and the second forming block are respectively connected to the cavity plate in a sliding mode along the opening direction perpendicular to the die, the sliding directions of the first forming block and the second forming block are opposite, forming surfaces of the product are respectively arranged on the first forming block and the second forming block, the second driving assembly is used for driving the first forming block and the second forming block to slide, when the die is in a die-closing state, one side surface of the first forming block and one side surface of the second forming block, which are opposite, slide to be abutted, and the forming surfaces on the first forming block and the second forming block jointly form the forming surface of the outer surface of the product.

Through adopting above-mentioned technical scheme, when the mould compound die, second drive assembly drives first shaping piece and second shaping piece towards relative one side slip to mutual butt simultaneously, makes the shaping face on first shaping piece and the second shaping piece form the shaping face of product surface jointly, carries out injection moulding to the outward flange of product, the injection moulding of the injection moulding product of being convenient for.

Preferably, the first molding block and the second molding block are jointly formed with concave grooves which can be matched with the first threaded core blocks and the second threaded core blocks, and when the die is in a die-closing state, the concave grooves are simultaneously matched with the first threaded core blocks and the second threaded core blocks.

Through adopting above-mentioned technical scheme, through the cooperation of concave groove and a plurality of first screw thread pellet and a plurality of screw thread pellet, the position of a plurality of first screw thread pellet and a plurality of second screw thread pellet is spacing, reduces the fashioned screw thread face skew or the possibility of tooth staggering on the product.

Preferably, the second driving assembly comprises a plurality of second inclined guide posts, one ends of the second inclined guide posts are fixedly connected to the core plate, and one ends of the second inclined guide posts, which are far away from the core plate, penetrate through and are respectively connected to the first forming block or the second forming block in a sliding manner.

Through adopting above-mentioned technical scheme, when the mould die sinking, the core drives a plurality of second oblique guide pillar and removes together, contacts with the inclined plane on first shaping piece and the second shaping piece respectively through the inclined plane of a plurality of second oblique guide pillar, forms tangential force, makes first shaping piece and second shaping piece slide towards one side that keeps away from the product screw thread face axis respectively.

The technical effects of the utility model are mainly as follows:

1. According to the utility model, the first threaded core blocks and the second threaded core blocks are arranged, when the mold is opened, the runner plate drives the conical blocks to slide towards one side far away from the cavity plate, and the first threaded core blocks slide towards one side far away from a product, because the first threaded core blocks slide along the mold opening direction inclined to the mold, the first threaded core blocks slide towards one side of the axis of the threaded surface of the product relative to the product, so that the first threaded core blocks are separated from the surface of the threaded surface, and after the first threaded core blocks are separated from the threaded surface of the product, the first driving assembly drives the second threaded core blocks to slide towards one side of the axis of the threaded surface of the product, so that the second threaded core blocks are separated from the threaded surface of the injection molded product; the first thread core block and the second thread core block are separated from the thread surface of the injection molded product respectively through the mold opening movement of the mold, so that the injection molding of the internal thread of the injection molded product is facilitated, and the production cost of the mold is reduced;

2. According to the utility model, the sliding direction and the sliding distance of the first threaded core blocks are limited by arranging the sliding rail and the limiting column, so that the possibility that the final sliding distances of the first threaded core blocks are different when the conical blocks drive the first threaded core blocks is reduced;

3. According to the utility model, the cooling groove is arranged on the conical block, cooling water flows through the cooling groove in the injection molding process, cold cutting is carried out on the conical block, and heat conduction is carried out on the first threaded core block and the second threaded core block through contact of the conical block with the first threaded core block and the second threaded core block, so that the first threaded core block and the second threaded core block are cooled.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application.

Fig. 2 is a schematic diagram of a cavity plate structure according to an embodiment of the present application.

Fig. 3 is a schematic view of a core plate according to an embodiment of the present application.

Fig. 4 is a schematic structural view of an internal thread forming mechanism according to an embodiment of the present application.

Fig. 5 is a schematic view of the structure of a tapered block according to an embodiment of the present application.

Fig. 6 is a schematic diagram of the structure of a product according to an embodiment of the present application.

Reference numerals illustrate: 1. a flow channel plate; 11. a cooling water path; 2. a core plate; 3. a cavity plate; 4. an internal thread forming mechanism; 41. a conical block; 411. a slide rail; 412. a limit groove; 413. a cooling tank; 42. a first threaded core; 421. a limit column; 43. a second threaded core; 44. a first drive assembly; 441. a first diagonal post; 442. a limiting block; 5. a surface forming mechanism; 51. a first molding block; 52. a second molding block; 521. a concave groove; 53. a second drive assembly; 531. and the second inclined guide post.

Detailed Description

The present application will be further described in detail below with reference to fig. 1-6, so that the technical solution of the present application can be more easily understood and mastered.

The embodiment of the application discloses an injection molding structure of a multi-side drawing block of an internal thread opening of a plastic cup cover.

Referring to fig. 1-6, the multi-side drawing block injection molding structure for the inner thread opening of the plastic cup cover of the present embodiment includes a runner plate 1, a core plate 2 and a cavity plate 3, the core plate 2 is slidably connected to the runner plate along a mold opening direction, the multi-side drawing block injection molding structure further includes an inner thread molding mechanism 4, the inner thread molding mechanism 4 includes a tapered block 41, two first thread core blocks 42, two second thread core blocks 43 and a first driving component 44, the tapered block 41 is fixedly connected to the runner plate 1, molding surfaces of partial product inner threads are respectively provided on the two first thread core blocks 42 and the two second thread core blocks 43, the two first thread core blocks 42 are slidably connected to the tapered block 41 along the mold opening direction inclined to the mold, and one end of the two first thread core blocks 42 close to the runner plate 1 is tapered to one end far away from the runner plate 1. The two second threaded core blocks 43 are respectively connected to the core plate 2 in a sliding manner along a mold opening direction perpendicular to the mold, the two first threaded core blocks 42 and the two second threaded core blocks 43 are respectively arranged at intervals, the conical blocks 41 are used for driving the sliding of the first threaded core blocks 42, and the first driving assembly 44 is used for driving the sliding of the second threaded core blocks 43.

Referring to fig. 1 to 6, when the mold is opened, the runner plate 1 drives the tapered block 41 to slide toward a side away from the cavity plate 3 and slides the plurality of first screw-threaded cores 42 toward a side away from the product, because the first screw-threaded cores 42 slide in an opening direction inclined to the mold, the two first screw-threaded cores 42 slide toward an axis line side of the screw-threaded surface of the product with respect to the product, the first screw-threaded cores 42 are separated from the screw-threaded surface, and when the first screw-threaded cores 42 are separated from the screw-threaded surface of the product, a sliding space is provided for the second screw-threaded cores 43 after the first screw-threaded cores 42 are released from the mold.

Referring to fig. 1 to 6, the first driving assembly 44 drives the plurality of second screw thread cores 43 to slide towards the axis side of the screw thread surface of the product, so that the second screw thread cores 43 are separated from the screw thread surface of the injection molded product; the first thread core block 42 and the second thread core block 43 are separated from the thread surface of the injection molded product respectively through the mold opening movement of the mold, so that the injection molding of the internal thread of the injection molded product is facilitated, and the production cost of the mold is reduced.

Referring to fig. 1-6, the first driving assembly 44 includes a first oblique guide post 441 and a limiting block 442, the limiting block 442 is slidably connected to the core plate 2 along a mold opening direction perpendicular to the mold, one end of the limiting block 442 is fixedly connected to the second threaded core 43, one end of the first oblique guide post 441 is fixedly connected to the runner plate 1, one end of the first oblique guide post 441 far away from the runner plate 1 is threaded through and is slidably connected to the limiting block 442, and the first oblique guide post 441 is obliquely arranged from one end close to the runner plate to one end far away from the runner plate toward the tapered block 41. When the mold is opened, the runner plate 1 drives the first inclined guide post 441 to slide towards one side far away from the cavity plate 3, and the inclined surface of the first inclined guide post 441 contacts with the inclined surface of the limiting block 442 to form tangential force, so that the limiting block 442 drives the second threaded core 43 to slide towards one side of the axis of the threaded surface of the product.

Referring to fig. 3-6, a sliding rail 411 is fixedly connected to the conical block 41, a limiting groove 412 is formed in the sliding rail 411, a limiting post 421 is fixedly connected to the first threaded core 42 on the sliding rail 411 in a sliding manner, and the limiting post 421 is slidably connected to the limiting groove 412. The sliding direction and the sliding distance of the first threaded core blocks 42 are limited, so that the possibility that the final sliding distances of the first threaded core blocks 42 are different when the tapered block 41 drives the first threaded core blocks 42 is reduced.

Referring to fig. 4 and 5, the flow channel plate 1 is provided with a cooling water channel 11, the tapered block 41 is provided with a cooling groove 413, and the cooling groove 413 is communicated with the cooling water channel 11. During injection molding, the cooling water flows through the cooling groove 413, cold-cuts the tapered block 41, and cools the first screw core block 42 and the second screw core block 43 by heat conduction through contact of the tapered block 41 with the first screw core block 42 and the second screw core block 43.

Referring to fig. 1-6, the mold further comprises a surface molding mechanism 5, the surface molding mechanism 5 is used for molding the outer side of the product, the surface molding mechanism 5 comprises a first molding block 51, a second molding block 52 and a second driving component 53, the first molding block 51 and the second molding block 52 are respectively connected to the cavity plate 3 in a sliding mode along a direction perpendicular to the mold opening direction of the mold, the sliding directions of the first molding block 51 and the second molding block 52 are opposite, molding surfaces of the product are respectively arranged on the first molding block 51 and the second molding block 52, the second driving component 53 is used for driving the sliding of the first molding block 51 and the second molding block 52, when the mold is in a mold closing state, the opposite side surfaces of the first molding block 51 and the second molding block 52 slide to abut against each other, and the molding surfaces on the first molding block 51 and the second molding block 52 jointly form the molding surfaces of the outer surface of the product.

Referring to fig. 1-6, when the mold is closed, the second driving assembly 53 drives the first molding block 51 and the second molding block 52 to slide towards opposite sides until the two molding blocks are in contact with each other, so that the molding surfaces on the first molding block 51 and the second molding block 52 jointly form the molding surface of the outer surface of the product, and the outer surface of the product is subjected to injection molding, thereby facilitating injection molding of the injection molded product.

Referring to fig. 1 to 6, the first molding block 51 and the second molding block 52 are formed with concave grooves 521 which are engageable with the plurality of first screw core blocks 42 and the plurality of second screw core blocks 43, and the concave grooves 521 are simultaneously engageable with the plurality of first screw core blocks 42 and the plurality of second screw core blocks 43 when the mold is in the closed state. By the cooperation of the concave groove 521 and the plurality of first screw thread core blocks 42 and the plurality of screw thread core blocks, the positions of the plurality of first screw thread core blocks 42 and the plurality of second screw thread core blocks 43 are limited, and the possibility of offset or dislocation of the molded screw thread surface on the product is reduced.

Referring to fig. 1-6, the second driving component 53 includes a plurality of second inclined guide posts 531, one ends of the plurality of second inclined guide posts 531 are fixedly connected to the core plate 2, one ends of the plurality of second inclined guide posts 531, which are far away from the core plate 2, are penetrated and respectively slidingly connected to the first molding block 51 or the second molding block 52, and the plurality of second inclined guide posts 531 are obliquely arranged from one end, which is close to the core plate 2, to one end, which is far away from the core plate 2, toward one side, which is far away from the tapered block 41. When the die is opened, the core plate 2 drives the second oblique guide posts 531 to move together, and the inclined surfaces of the second oblique guide posts 531 are respectively contacted with the inclined surfaces on the first molding block 51 and the second molding block 52 to form tangential force, so that the first molding block 51 and the second molding block 52 respectively slide towards one side far away from the axis of the threaded surface of the product.

Of course, the above is only a typical example of the application, and other embodiments of the application are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the application claimed.

Claims (8)

1. The utility model provides a piece injection moulding structure is taken out to plastics bowl cover internal thread mouth multi-side, includes runner board (1), core board (2) and die cavity board (3), core board (2) are along die sinking direction sliding connection on flowing to the board, its characterized in that: still include internal thread forming mechanism (4), internal thread forming mechanism (4) include toper piece (41), a plurality of first screw thread pellet (42), a plurality of second screw thread pellet (43) and first drive assembly (44), toper piece (41) fixed connection is on runner board (1) board, and a plurality of first screw thread pellet (42) are respectively along the slip connection on toper piece (41) of the direction of opening of slope in the mould, and a plurality of second screw thread pellet (43) are respectively along the direction of opening of perpendicular to mould sliding connection on core (2), and a plurality of first screw thread pellet (42) and a plurality of second screw thread pellet (43) are set up at intervals respectively, toper piece (41) are used for driving the slip of first screw thread pellet (42), first drive assembly (44) are used for driving the slip of second screw thread pellet (43).

2. The plastic cup lid internal thread mouth multi-side drawing block injection molding structure according to claim 1, wherein: the first driving assembly (44) comprises a first inclined guide pillar (441) and a limiting block (442), the limiting block (442) is slidably connected to the core plate (2) along a mold opening direction perpendicular to a mold, one end of the limiting block (442) is fixedly connected to the second threaded core block (43), one end of the first inclined guide pillar (441) is fixedly connected to the runner plate (1), and one end, far away from the runner plate (1), of the first inclined guide pillar (441) is arranged in a penetrating mode and is slidably connected to the limiting block (442).

3. The plastic cup lid internal thread mouth multi-side drawing block injection molding structure according to claim 1, wherein: be equipped with slide rail (411) on toper piece (41), limit groove (412) have been seted up on slide rail (411), first screw thread core piece (42) sliding connection is equipped with spacing post (421) on slide rail (411) on first screw thread core piece (42), spacing post (421) sliding connection is in limit groove (412).

4. A plastic cup lid female screw mouth multi-side drawing block injection molding structure according to claim 3, wherein: the first threaded core block (42) is arranged in a tapered mode from one end, close to the runner plate (1), to one end, far away from the runner plate (1).

5. The plastic cup lid internal thread mouth multi-side drawing block injection molding structure according to claim 1, wherein: a cooling water channel (11) is formed in the runner plate (1), a cooling groove (413) is formed in the conical block (41), and the cooling groove (413) is communicated with the cooling water channel (11).

6. The plastic cup lid internal thread mouth multi-side drawing block injection molding structure according to claim 1, wherein: the surface forming mechanism (5) is used for forming the outer side surface of a product, the surface forming mechanism (5) comprises a first forming block (51), a second forming block (52) and a second driving assembly (53), the first forming block (51) and the second forming block (52) are respectively connected to the cavity plate (3) in a sliding mode along the opening direction perpendicular to the die, the sliding directions of the first forming block (51) and the second forming block (52) are opposite, forming surfaces of the product are respectively arranged on the first forming block (51) and the second forming block (52), the second driving assembly (53) is used for driving the sliding of the first forming block (51) and the second forming block (52), when the die is in a die-closing state, one side surface opposite to the first forming block (51) and one side surface opposite to the second forming block (52) are respectively slid to be abutted, and forming surfaces of the first forming block (51) and the second forming block (52) are jointly formed into forming surfaces of the outer side surface of the product.

7. The plastic cup lid internal thread mouth multi-side drawing block injection molding structure according to claim 6, wherein: concave grooves (521) which can be matched with the first threaded core blocks (42) and the second threaded core blocks (43) are formed on the first molding block (51) and the second molding block (52) together, and when the die is in a die-closing state, the concave grooves (521) are matched with the first threaded core blocks (42) and the second threaded core blocks (43) simultaneously.

8. The plastic cup lid internal thread mouth multi-side drawing block injection molding structure according to claim 6, wherein: the second driving assembly (53) comprises a plurality of second inclined guide posts (531), one ends of the second inclined guide posts (531) are fixedly connected to the core plate (2), and one ends, far away from the core plate (2), of the second inclined guide posts (531) penetrate through and are respectively connected to the first forming block (51) or the second forming block (52) in a sliding mode.