CN218477055U

CN218477055U - Interrupted formula inner reversing cover injection mould

Info

Publication number: CN218477055U
Application number: CN202222775414.4U
Authority: CN
Inventors: 蒋孝丰
Original assignee: ZHANGJIAGANG JOWAY MACHINERY CO Ltd
Current assignee: ZHANGJIAGANG JOWAY MACHINERY CO Ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-02-14
Anticipated expiration: 2032-10-21

Abstract

The utility model discloses an intermittent type formula inner inverted cover injection mould, include: the mold comprises a mold base, a mold core mounting seat arranged on the mold base, and a mold stripping plate, a mold cavity plate and a runner plate which are sequentially positioned above the mold core mounting seat, wherein at least one mold cavity is formed in the mold cavity plate, an external cooling channel is arranged in the mold stripping plate and/or the mold cavity plate, a mold core and a back-off forming sleeve corresponding to the mold cavity are arranged in the mold core mounting seat, the back-off forming sleeve is movably sleeved on the mold core, the tops of the mold core and the back-off forming sleeve extend into the corresponding mold cavity, an internal cooling channel is arranged in the mold core, a plurality of forming grooves corresponding to intermittent internal back-off are arranged on the outer side of the top of the back-off forming sleeve, and at least one end of each forming groove is provided with a guide slope from the bottom wall to the port from deep to shallow; and a forming sleeve rotation driving mechanism for driving the inverted forming sleeve to rotate is further arranged in the mold core mounting seat. Injection mould mainly used internal inverted buckle lid's injection moulding in interrupted formula.

Description

Interrupted formula inner reversing cover injection mould

Technical Field

The utility model relates to an injection mold, concretely relates to back-off cap injection mold in discontinuous formula.

Background

At present, some caps are provided with inner inverted buckles, and after the caps are screwed on bottles, the inner inverted buckles play a role in preventing looseness, theft or other parts from falling off. Interior back-off usually has whole circle and two kinds of structures of multiple spot discontinuous for injection moulding's the unable straight line of mould takes off by force, also can't take off soon through the core rotation, therefore all adopted the oblique slider drawing of patterns of core, such mould structure is complicated, with high costs, moreover, is difficult for setting up the cooling water course in the core in this mould, thereby the cooling effect that leads to the mould is poor, has prolonged the cool time greatly, leads to the production efficiency of this mould lower.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the intermittent inner inverted cover injection mold is simple in structure and free of moving of a mold core during demolding.

For solving the above technical problem, the utility model discloses the technical scheme who adopts does: the utility model provides an interrupted formula inner inverted buckle lid injection mould, its structure includes: the mold comprises a mold base, a mold core mounting seat arranged on the mold base, and a mold stripping plate, a mold cavity plate and a runner plate which are sequentially positioned above the mold core mounting seat, wherein at least one mold cavity is formed in the mold cavity plate, an external cooling channel is arranged in the mold stripping plate and/or the mold cavity plate, a mold core and a back-off forming sleeve corresponding to the mold cavity are arranged in the mold core mounting seat, the back-off forming sleeve is movably sleeved on the mold core, the tops of the mold core and the back-off forming sleeve extend into the corresponding mold cavity, an internal cooling channel is arranged in the mold core, a plurality of forming grooves corresponding to intermittent internal back-off are arranged on the outer side of the top of the back-off forming sleeve, and at least one end of each forming groove is provided with a guide slope from a bottom wall to a port from deep to shallow; the mold core mounting seat is also internally provided with a molding sleeve rotation driving mechanism for driving the inverted molding sleeve to rotate.

As a preferable scheme, in the intermittent inner flip cover injection mold, both ends of the forming groove are provided with guiding slopes from the bottom wall to the port from deep to shallow.

As a preferred aspect, in the intermittent inner undercut cap injection mold, the core mount comprises: the die comprises a die core bottom plate arranged on the die holder, a die core mounting plate arranged on the die core bottom plate, a forming sleeve bottom plate arranged on the die core mounting plate, and a forming sleeve mounting plate arranged on the forming sleeve bottom plate; the mold core is arranged on the mold core bottom plate and movably penetrates through the mold core mounting plate, the forming sleeve bottom plate and the forming sleeve mounting plate; the back-off forming sleeve is arranged on the forming sleeve bottom plate and movably penetrates through the forming sleeve mounting plate.

As a preferable scheme, in the intermittent inner undercut injection mold, the undercut forming sleeve is provided with a tapered guide section, the tapered guide section is provided with a tapered guide surface, the forming sleeve mounting plate is provided with a tapered guide hole matched with the tapered guide section, and the tapered guide section of the undercut forming sleeve is arranged in the tapered guide hole of the forming sleeve mounting plate.

In the intermittent inner undercut injection mold, the specific structure of the forming sleeve rotation driving mechanism preferably comprises: the core mounting seat is internally provided with a driving rack matched with the transmission gear, and the driving rack is meshed with the transmission gear.

As a preferable scheme, in the injection mold of the intermittent inner undercut, the specific arrangement of the inner cooling channel is as follows: the mold core is internally provided with a cooling cavity from the bottom surface, a cooling pipe is arranged in the cooling cavity, the lower end of the cooling pipe is arranged in the mold core mounting seat, a water return channel is formed between the cooling pipe and the cooling cavity, and the mold core mounting seat is also respectively provided with a water inlet communicated with the lower end of the cooling pipe and a water outlet communicated with the water return channel.

The beneficial effects of the utility model are that: the utility model discloses can be on the core pivoted back-off forming sleeve very ingeniously through setting up alone to set up in the one end of shaping recess from diapire to port by the guide slope of depth to shallowness, make the structure of whole mould very simple, reduced manufacturing cost. In addition, by arranging the inner cooling channel and the outer cooling channel, the cooling time is greatly shortened, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of the injection mold of the present invention.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Fig. 3 is an enlarged structural view of a portion B in fig. 1.

Fig. 4 is a schematic diagram of a demolding mode of the injection mold of the present invention.

Fig. 5 is a schematic view of another mold release manner of the injection mold of the present invention.

Fig. 6 is a schematic cross-sectional view of the undercut portion when formed.

Fig. 7 is a schematic cross-sectional structure of the inverted portion after being rotated out of the groove.

The reference numerals in fig. 1 to 7 are respectively: 1. the mold base is provided with a mold base, 11, a mold core bottom plate, 110, a cooling pipe, 111, a water inlet, 112, a water outlet, 113, a water return channel, 12, a mold core mounting plate, 13, a molding sleeve bottom plate, 14, a molding sleeve mounting plate, 2, a runner plate, 23, a runner, 3, a mold cavity plate, 31, a mold cavity, 33, an outer cooling channel, 4, a demolding plate, 43, an outer cooling channel, 5, a mold core, 51, a cooling cavity, 6, a back-off molding sleeve, 61, a molding groove, 611, a guide slope, 62, a conical guide section, 621, a conical guide surface, 63, a transmission gear, 7, a driving rack, 71, a rack tooth, 9, a demolding driving mechanism, 91, a driving rod, 100 and a product.

Detailed Description

The following describes in detail a specific embodiment of an intermittent inner undercut injection mold according to the present invention with reference to the accompanying drawings 1 to 7.

As shown in fig. 1, fig. 4 and fig. 5, the intermittent inner inverted cap injection mold of the present invention has a structure comprising: the mold comprises a mold base 1, a core mounting seat arranged on the mold base 1, and a stripping plate 4, a cavity plate 3 and a runner plate 2 (which belong to the conventional technology in the field and are not described herein in detail) which are sequentially arranged above the core mounting seat, wherein the core mounting seat comprises: a core bottom plate 11 arranged on the die holder 1, a core mounting plate 12 arranged on the core bottom plate 11, a forming sleeve bottom plate 13 arranged on the core mounting plate 12, and a forming sleeve mounting plate 14 arranged on the forming sleeve bottom plate 13; the cavity plate 3 is provided with two cavities 31 (the number of the cavities 31 is determined according to actual conditions), the outer cooling channels 43 and 33 (belonging to the conventional technology in the field and not described herein) are respectively arranged on the outer sides of the cavities 31 in the stripper plate 4 and the cavity plate 3, the core mounting seat is provided with a core 5 and a back-off forming sleeve 6 corresponding to the cavities 31, and the specific arrangement mode is as follows: a limiting installation boss (belonging to the conventional technology in the field and not described herein) is arranged at the bottom of the mold core 5, a mounting hole matched with the mold core 5 and a limiting mounting hole matched with the limiting installation boss on the mold core 5 are formed in the mold core bottom plate 11, the mold core mounting plate 12 and the back-off forming sleeve 6, a transmission gear 63 is arranged at the bottom of the back-off forming sleeve 6, a mounting hole matched with the back-off forming sleeve 6 and a gear placement hole matched with the back-off forming sleeve 6 are formed in the forming sleeve bottom plate 13 and the forming sleeve mounting plate 14, the back-off forming sleeve 6 is arranged in the forming sleeve bottom plate 13 and the forming sleeve mounting plate 14, and the transmission gear 63 at the bottom of the back-off forming sleeve 6 is arranged in the gear placement hole of the forming sleeve mounting plate 14; the top of back-off forming sleeve 6 and core 5 stretches into corresponding die cavity 31, is provided with interior cooling channel in the core 5, and this interior cooling channel's concrete setting mode does: the mold core 5 is internally provided with a cooling cavity 51 from the bottom surface, a cooling pipe 110 is arranged in the cooling cavity 51, the lower end of the cooling pipe 110 is arranged in the mold core bottom plate 11, a water return channel 113 is formed between the cooling pipe 110 and the inner wall of the cooling cavity 51, and the mold core bottom plate 11 is also respectively provided with a water inlet 111 communicated with the lower end of the cooling pipe 110 and a water outlet 112 communicated with the water return channel 113; a plurality of forming grooves 61 (shown in fig. 2) corresponding to the intermittent inner reverse on the product 100 are formed in the outer side of the top of the reverse forming sleeve 6, and for convenience of processing and use, guide slopes 611 (shown in fig. 6 and 7) are respectively formed at two ends of each forming groove 61 from the bottom wall to the port from deep to shallow; the core mounting seat in still be provided with the shaping cover that is used for driving back-off shaping cover 6 and rotates actuating mechanism, as shown in fig. 3, this shaping cover rotates actuating mechanism in addition to above-mentioned drive gear 63 that sets up on back-off shaping cover 6, still includes: and the driving rack 7 is arranged between the forming sleeve mounting plate 14 and the forming sleeve bottom plate 13 and is arranged between the two inverted forming sleeves 6 in the middle, both sides of the driving rack 7 are provided with rack teeth 71, and the rack teeth 71 are meshed with the transmission gear 63 on the corresponding side.

In practical application, the inverted forming sleeve 6 is provided with a conical guide section 62, the conical guide section 62 is provided with a conical guide surface 621, the forming sleeve mounting plate 14 is provided with a conical guide hole matched with the conical guide section 62, and the conical guide section 62 of the inverted forming sleeve 6 is arranged in the conical guide hole of the forming sleeve mounting plate 14; the die holder 1 is also provided with a demoulding driving mechanism 9, and a pair of driving rods 91 of the demoulding driving mechanism 9 is connected with the demoulding plate 4.

The utility model discloses a theory of operation does: as shown in fig. 4, when the mold is closed, molten plastic is injected into the cavity 31 through the runner 23, then pressure maintaining and cooling are performed, then the mold is opened, after the mold is opened, the driving rack 7 simultaneously drives the transmission gears 63 on both sides to rotate, the inverted forming sleeve 6 rotates by a certain angle α (see fig. 7), so that the inverted buckle of the product 100 is horizontally rotated from the forming groove 61 of the inverted forming sleeve 6 to the outer diameter arc surface of the inverted forming sleeve 6, then the inverted forming sleeve 6 and the stripper plate 4 strip the product 100 from the core 5 under the action of the driving rod 91 (also called mold ejection rod) of the demolding driving mechanism 9, and then the stripper plate 4 strips the product 100 from the inverted forming sleeve 6, thereby completing the whole demolding process; of course, as shown in fig. 5, after the reverse forming sleeve 6 rotates a certain angle α when the mold is opened, the demolding plate 4 may remove the product 100 from the core 5 and the reverse forming sleeve 6 at one time under the action of the mold ejector rod, thereby completing the whole demolding process.

In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the shapes, structures, features and spirit of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An interrupted inner undercut injection mold, comprising: the mold comprises a mold base, a mold core mounting seat arranged on the mold base, and a mold stripping plate, a mold cavity plate and a runner plate which are sequentially positioned above the mold core mounting seat, wherein at least one mold cavity is formed in the mold cavity plate, and an external cooling channel is arranged in the mold stripping plate and/or the mold cavity plate; and a forming sleeve rotation driving mechanism for driving the inverted forming sleeve to rotate is further arranged in the mold core mounting seat.

2. The intermittent inner undercut cap injection mold of claim 1, wherein both ends of the molding groove are provided with guiding slopes from deep to shallow from the bottom wall to the port.

3. The interrupted inner undercut cap injection mold of claim 1, wherein the core mount comprises: the die comprises a die core bottom plate arranged on a die holder, a die core mounting plate arranged on the die core bottom plate, a forming sleeve bottom plate arranged on the die core mounting plate and a forming sleeve mounting plate arranged on the forming sleeve bottom plate; the mold core is arranged on the mold core bottom plate and movably penetrates through the mold core mounting plate, the molding sleeve bottom plate and the molding sleeve mounting plate; the back-off forming sleeve is arranged on the forming sleeve bottom plate and movably penetrates through the forming sleeve mounting plate.

4. The injection mold of claim 3, wherein the inverted forming sleeve is provided with a tapered guide section, the tapered guide section is provided with a tapered guide surface, the forming sleeve mounting plate is provided with a tapered guide hole matched with the tapered guide section, and the tapered guide section of the inverted forming sleeve is arranged in the tapered guide hole of the forming sleeve mounting plate.

5. The intermittent inner undercut injection mold of claim 1, wherein the specific structure of the forming sleeve rotation driving mechanism comprises: the core mounting seat is internally provided with a driving rack matched with the transmission gear, and the driving rack is meshed with the transmission gear.

6. The interrupted inner undercut injection mold of claims 1 to 5, wherein the inner cooling channels are specifically arranged in a manner that: the core is provided with a cooling cavity from the bottom surface inwards, a cooling pipe is arranged in the cooling cavity, the lower end of the cooling pipe is arranged in the core mounting seat, a water return channel is formed between the cooling pipe and the cooling cavity, and the core mounting seat is further provided with a water inlet communicated with the lower end of the cooling pipe and a water outlet communicated with the water return channel.