Front mold core component and three-plate mold

Abstract

The present invention relates to the field of mold technology, and provides a front mold core assembly and a three-plate mold, wherein the front mold core assembly comprises: a front mold core, which is arranged in the installation cavity of the A plate, and the front mold core has a front mold cavity and a through hole connected to the front mold cavity; a flow channel plate, which is movably arranged on the side of the front mold core away from the front mold cavity, and the flow channel plate has a branch flow channel; a front mold insert, which is arranged on the flow channel plate and penetrates the flow channel plate and the through hole, and the interior of the front mold insert is provided with a channel, one end of the channel is connected to the branch flow channel, and the other end of the channel is connected to the front mold cavity; wherein a first lock buckle is arranged on the side of the flow channel plate away from the front mold core, and a first lock hole is opened on the side of the sprue plate close to the A plate. It can prevent the product from adhering to the front mold insert and the front mold cavity, prevent the product from being pulled, and prevent the front mold cavity from being damaged and causing damage to the mold, thereby ensuring normal and efficient production of the mold.

Description

Technical Field

[0001] The invention relates to the technical field of molds, and in particular to a front mold core component and a three-plate mold. Background Art

[0002] The three-plate mold usually includes a face plate, a sprue plate, an A plate, a B plate, an ejector plate, a fixed plate, etc. The A plate is provided with a front mold core, and the B plate is provided with a rear mold core. The front mold core and the rear mold core cooperate to form a cavity for molding the product.

[0003] In a three-plate mold, the product is easy to stick to the front mold insert after injection molding, especially when there are more and deeper glue positions on the front mold core. After the product is injection molded, the product will exert a large clamping force on the front mold insert. When the A and B plates are opened, the product will adhere to the front mold insert, which may easily cause the product to be strained. In severe cases, the product will stick to the front model cavity, and it will take a lot of manual effort to remove the product. If the situation is too serious, the front model cavity will be damaged, resulting in damage to the mold and affecting the production progress of the entire project. Summary of the invention

[0004] One object of the present invention is to provide a front mold core assembly to solve the technical problem in the prior art that the product is easily adhered to the front mold insert.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a front mold core assembly, which is applied to a three-plate mold, wherein the three-plate mold has a nozzle plate and an A plate, and the A plate has a mounting cavity penetrating therethrough, and the front mold core assembly comprises: a front mold core, wherein the front mold core is arranged in the mounting cavity of the A plate, and the front mold core has a front mold cavity and a through hole connected to the front mold cavity; a flow channel plate, wherein the flow channel plate is movably arranged on a side of the front mold core away from the front mold cavity, and the flow channel plate has a branch flow channel; a front mold insert, wherein the front mold insert is arranged on the flow channel plate and penetrates therethrough; A channel is provided inside the flow channel plate and the perforation, one end of the channel is connected to the branch flow channel, and the other end of the channel is connected to the front mold cavity; wherein, a first lock buckle is provided on the side of the flow channel plate away from the front mold core, and a first lock hole for plugging and matching with the first lock buckle is provided on the side of the sprue plate close to the A plate; or, a first lock buckle is provided on the side of the sprue plate close to the A plate, and a first lock hole for plugging and matching with the first lock buckle on the sprue plate is provided on the side of the flow channel plate away from the front mold core.

[0006] In one embodiment, a front mold groove is provided on a side of the front mold core that is away from the front mold cavity, and the flow channel plate is movably disposed in the front mold groove.

[0007] In one embodiment, the runner plate includes: a runner plate body, on a side of the runner plate body facing away from the front mold cavity, there is a runner groove, on the bottom wall of the runner groove, there are insert mounting holes, the insert mounting holes penetrate through the runner plate body and communicate with the perforations, and one end of the front mold insert is detachably mounted in the insert mounting holes; and a runner pressing plate, the runner pressing plate is detachably disposed in the runner groove and presses on the front mold insert.

[0008] In one embodiment, the front mold core assembly further includes a limiting portion, the limiting portion protrudes on the front mold core, the runner plate is movably limited between the front mold core and the limiting portion, and there is a moving distance for the runner plate to move between the limiting portion and the runner plate.

[0009] In one embodiment, the runner plate has a limiting groove, the limiting portion includes: a fixed section, the fixed section is fixed to the front mold core; and a limiting section, the limiting section is connected to the fixed section, the limiting section extends into the limiting groove, and there is a moving distance for the runner plate to move between the limiting section and the bottom wall of the limiting groove.

[0010] In one embodiment, the front mold core assembly further includes a spring, the spring is disposed between the front mold core and the runner plate.

[0011] In one embodiment, on a side of the front mold core close to the runner plate, there is a first spring groove, and one end of the spring close to the front mold core is received in the first spring groove; and / or, on a side of the runner plate close to the front mold core, there is a second spring groove, and one end of the spring close to the runner plate is received in the second spring groove.

[0012] In one embodiment, the front mold core assembly further includes a guiding portion, the guiding portion protrudes on a side of the front mold core facing away from the front mold cavity, and a guiding hole slidably matched with the guiding portion is formed on the runner plate.

[0013] Another object of the present invention is to provide a three-plate mold, the three-plate mold comprising: a panel, a nozzle plate, an A plate and a B plate arranged in sequence, the A plate having an installation cavity running through it, and the B plate having a rear mold core on a side close to the A plate; and a front mold core assembly as described in any of the above embodiments, the front mold core of the front mold core assembly being fixed in the installation cavity, and the front mold cavity of the front mold core of the front mold core assembly being matched with the rear mold core; wherein a first lock buckle is provided on a side of the flow channel plate of the front mold core assembly that is away from the front mold core of the front mold core assembly, and a locking member for plugging with the first lock buckle is provided on a side of the nozzle plate close to the A plate A first lock hole for mating with the first lock buckle; or, a first lock buckle is provided on the side of the nozzle plate close to the A plate, and a first lock hole for mating with the first lock buckle is provided on the side of the flow channel plate of the front mold core assembly facing away from the front mold core assembly; wherein, a second lock buckle is provided on the side of the panel close to the nozzle plate, and a second lock hole for mating with the second lock buckle is provided on the side of the nozzle plate close to the panel; or, a second lock buckle is provided on the side of the nozzle plate close to the panel, and a second lock hole for mating with the second lock buckle is provided on the side of the panel close to the nozzle plate.

[0014] In one embodiment, the sprue plate includes: a sprue plate body; and a water-saving inlet insert, wherein the water-saving inlet insert is arranged on the sprue plate body close to the A plate, and is used to cooperate with the runner plate of the front mold core assembly; wherein, the first locking buckle is arranged on the side of the runner plate of the front mold core assembly that is away from the front mold core of the front mold core assembly, and the first locking hole is opened on the side of the water-saving inlet insert close to the A plate; or, the first locking buckle is arranged on the side of the water-saving inlet insert close to the A plate, and the first locking hole is opened on the side of the runner plate of the front mold core assembly that is away from the front mold core of the front mold core assembly; wherein, the three-plate mold also includes a gate sleeve, which is arranged on the panel, and the gate sleeve is passed through the sprue plate body and the water-saving inlet insert and is connected to the branch channel of the runner plate of the front mold core assembly.

[0015] One or more of the above technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0016] The front mold core assembly provided by the present invention is provided with a front mold core having a front model cavity and a perforation, a flow channel plate movably arranged on the front mold core and away from the side of the front model cavity, a front mold insert arranged on the flow channel plate and penetrating the flow channel plate and the perforation, and a first locking buckle and a first locking hole that are plugged and matched are arranged between the flow channel plate and the sprue plate of the three-plate mold, so that when the three-plate mold using the front mold core assembly is opened, the sprue plate can drive the flow channel plate and the front mold insert to move toward the side away from the front mold core relative to the front mold core through the cooperation of the first locking buckle and the first locking hole, so that the front mold insert can be pulled relative to the front mold cavity first, so that the front mold insert is first separated from the product in the front mold cavity, thereby preventing the product in the front mold cavity from adhering to the front mold insert, so that when the A plate and the B plate are opened subsequently, the product does not adhere to the front mold insert and the front mold cavity and is easy to demold, which can prevent the product from being strained and ensure the integrity of the product, and can prevent the front mold cavity from being damaged and causing damage to the mold, thereby ensuring normal and efficient production of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A first structural schematic diagram of a front mold core assembly provided in an embodiment of the present invention;

[0019] Figure 2 The second structural schematic diagram of the front mold core assembly provided by the embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the top view of the front mold core assembly provided in an embodiment of the present invention;

[0021] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure in the AA direction;

[0022] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0023] Figure 6 for Figure 3 Schematic diagram of the cross-sectional structure in the CC direction;

[0024] Figure 7 A schematic diagram of the structure of the front mold core provided by an embodiment of the present invention;

[0025] Figure 8Schematic diagram one of the structure of the runner plate body cooperating with the front mold insert provided by the embodiment of the present invention;

[0026] Figure 9 Schematic diagram two of the structure of the runner plate body cooperating with the front mold insert provided by the embodiment of the present invention;

[0027] Figure 10 Schematic diagram one of the structure of the runner plate body provided by the embodiment of the present invention;

[0028] Figure 11 Schematic diagram two of the structure of the runner plate body provided by the embodiment of the present invention;

[0029] Figure 12 Schematic diagram of the structure of the three-plate mold provided by the embodiment of the present invention;

[0030] Figure 13 Schematic cross-sectional view of the three-plate mold provided by the embodiment of the present invention;

[0031] Figure 14 Schematic diagram one of the structure of the sprue plate provided by the embodiment of the present invention;

[0032] Figure 15 Schematic diagram two of the structure of the sprue plate provided by the embodiment of the present invention;

[0033] Figure 16 Schematic diagram of the structure of the panel provided by the embodiment of the present invention.

[0034] Among them, the reference numerals in the figures:

[0035] 100, front mold core assembly; 10, front mold core; 101, front mold cavity; 102, perforation; 20, runner plate; 201, branch runner; 30, front mold insert; 301, channel; 40, first latch; 103, front mold groove; 21, runner plate body; 211, runner groove; 212, insert mounting hole; 22, runner pressure plate; 50, limiting part; 202, limiting groove; 51, fixed section; 52, limiting section; 60, spring; 104, first spring groove; 203, second spring groove; 70, guiding part; 204, guiding hole; 1000, three-plate mold; 200, panel; 300, sprue plate; 400, A plate; 500, B plate; 410, mounting cavity; 510, rear mold core; 3001, first locking hole; 210, second latch; 3002, second locking hole; 310, sprue plate body; 320, water-saving sprue insert; 600, sprue bushing. Detailed implementation manners

[0036] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Please refer to Figures 1 to 4 and Figure 9 , an embodiment of the present invention provides a front mold core assembly 100, which is applied to a three-plate mold. The three-plate mold has a sprue plate, a plate A, and a plate B. The plate A has an installation cavity penetrating through it, that is, the installation cavity penetrates through two opposite faces of the plate A. Figures 12 to 15 That is, the three-plate mold 1000, the sprue plate 300, the plate A 400, and the installation cavity 410 are exemplarily shown; the front mold core assembly 100 includes a front mold core 10, a runner plate 20, and a front mold insert 30, where:

[0041] The front mold core 10 is arranged in the installation cavity of the A plate. Specifically, the front mold core 10 can be fixedly connected to the A plate by screws or bolts; the front mold core 10 has a front model cavity 101 and a through hole 102 connected to the front model cavity 101. The front model cavity 101 is arranged on one side of the front mold core 10, and is used to cooperate with the rear mold core on the B plate of the three-plate mold to form a cavity for product molding. The product can be molded in the front model cavity 101; the through hole 102 runs through the front mold core 10, and is used for the front mold insert 30 to pass through and extend into the front model cavity 101.

[0042] The runner plate 20 is movably arranged on the side of the front mold core 10 away from the front model cavity 101, that is, the runner plate 20 and the front model cavity 101 are respectively located on the opposite sides of the front mold core 10. Specifically, the runner plate 20 is movably arranged on the upper side of the front mold core 10, and the front model cavity 101 is arranged on the lower side of the front mold core 10; the runner plate 20 is movably arranged on the front mold core 10 means that the runner plate 20 can be movably arranged on the front mold core 10 relative to the front mold core 10; wherein, the runner plate 20 has a branch channel 201, and the branch channel 201 may include a plurality of interconnected runners, which are used to be connected to the main channel of the gate sleeve of the three-plate mold and to be connected to the interior of the front mold insert 30, and the fluid can flow to the branch channel 201 through the gate sleeve of the three-plate mold.

[0043] The front mold insert 30 is arranged on the flow channel plate 20, that is, the front mold insert 30 can move with the flow channel plate 20 relative to the front mold core 10, and the front mold insert 30 is fixed to the flow channel plate 20. Specifically, the front mold insert 30 is detachably arranged on the flow channel plate 20; the front mold insert 30 passes through the flow channel plate 20 and the through hole 102, and a channel 301 is provided inside the front mold insert 30, one end of the channel 301 is connected to the branch channel 201, and the other end of the channel 301 is connected to the front model cavity 101, so as to facilitate the fluid to enter the front model cavity 101 through the branch channel 201 and the channel 301.

[0044] Among them, a first locking buckle 40 is provided on one side of the runner plate 20 facing away from the front mold core 10. The first locking buckle 40 can be a nylon buckle, a rubber plug (such as a non-glue powder type rubber plug), a metal plug, an opener, etc., or it can be a protrusion protruding from the runner plate 20. The first locking buckle 40 protrudes from the runner plate 20. A first locking hole for plugging and cooperating with the first locking buckle 40 is opened on one side of the sprue plate close to the A plate; the shape of the first locking hole is adapted to the shape of the first locking buckle 40. For example, the first locking buckle 40 can be generally columnar, and the first locking hole can be a circular hole. Of course, it can also be other shapes; one end of the first locking buckle 40 can be fixed to the runner plate 20 by screws or bolts. Of course, it can also be integrally formed or welded to the runner plate 20. The other end of the first locking buckle 40 protrudes from the runner plate 20 and is used to cooperate with the first locking hole. The first locking hole and the first locking buckle 40 are detachably plugged and cooperated, that is, there is a frictional force or a tight fitting force between the two when they are plugged and cooperated. When the first locking buckle 40 is subjected to a force that makes it move away from the first locking hole and the force is greater than the frictional force between the first locking hole and the first locking buckle 40, the two are separated, so that the runner plate 20 and the sprue plate can be connected through the first locking buckle 40 and the first locking hole and can move relative to the front mold core 10 at the same time, and when subjected to a certain force (the force is greater than the frictional force between the first locking buckle 40 and the first locking hole), the first locking buckle 40 and the first locking hole are separated and the runner plate 20 and the sprue plate are separated; among them, an exhaust through hole communicating with the first locking hole is also opened on the sprue plate; among them, the number of the first locking buckles 40 is the same as the number of the first locking holes and they are in one-to-one correspondence. Optionally, the number of the first locking buckles 40 and the first locking holes is 2-4, such as 2, 3, 4, but not limited thereto. Of course, the installation positions of the first locking buckle 40 and the first locking hole are not limited thereto. In another embodiment, the first locking buckle 40 is provided on one side of the sprue plate close to the A plate, and a first locking hole for plugging and cooperating with the first locking buckle 40 on the sprue plate is opened on one side of the runner plate 20 facing away from the front mold core 10, that is, the installation positions of the first locking buckle 40 and the first locking hole are swapped.

[0045] The front mold core assembly 100 provided by the embodiment of the present application includes a front mold core 10 having a front mold cavity 101 and a perforation 102, a runner plate 20 movably disposed on the side of the front mold core 10 away from the front mold cavity 101, and a front mold insert 30 disposed on the runner plate 20 and passing through the runner plate 20 and the perforation 102. By providing a first latch 40 and a first locking hole that are inserted and matched between the runner plate 20 and the sprue plate of the three-plate mold, when the three-plate mold applying the front mold core assembly 100 is opened, the sprue plate can drive the runner plate 20 and the front mold insert 30 to move relative to the front mold core 10 toward the side away from the front mold core 10 through the cooperation of the first latch 40 and the first locking hole, so that the front mold insert 30 can be first retracted relative to the front mold cavity 101, so that the front mold insert 30 is first separated from the product in the front mold cavity 101, thereby preventing the product in the front mold cavity 101 from adhering to the front mold insert 30. When the A plate and the B plate are opened subsequently, the product does not adhere to the front mold insert 30 and the front mold cavity 101 and is easy to demold, which can prevent the product from being strained during mold opening due to adhesion to the front mold insert, ensure the integrity of the product, and prevent damage to the front mold cavity 101 resulting in mold damage, ensuring the normal and efficient production of the mold; moreover, the structure of the front mold core assembly 100 is easy to process, especially suitable for the case where the front mold structure space is small, and can ensure the smooth, continuous and efficient production of the product without increasing the complexity of the mold structure; at the same time, since the runner plate 20 is directly movably disposed on the front mold core 10, that is, the front mold core of the existing three-plate mold is creatively decomposed into two parts, the front mold core 10 and the runner plate 20, and the installation cavity of the A plate penetrates through the A plate, which is conducive to the gate sleeve of the three-plate mold passing through the sprue plate and directly communicating with the branch runner 201 on the runner plate 20. There is no additional blockage of the A plate between the front mold core 10 and the runner plate 20, which can effectively shorten the sprue length; thus, without increasing the complexity of the mold structure and effectively shortening the sprue length, the front mold insert 30 can be first separated from the product in the front mold cavity 101, preventing the product from adhering to the front mold insert 30.

[0046] In one embodiment, please refer to Figure 1 and Figure 7, on the side of the front mold core 10 facing away from the front mold cavity 101, a front mold groove 103 is provided, that is, the front mold groove 103 and the front mold cavity 101 are respectively provided on the opposite two sides of the front mold core 10. Specifically, the front mold groove 103 is provided on the upper surface of the front mold core 10, and the front mold cavity 101 is provided on the lower surface of the front mold core 10; the runner plate 20 is movably arranged in the front mold groove 103, that is, the runner plate 20 can move in the front mold groove 103 in a direction away from the front mold core 10 or in a direction close to the front mold core 10. With such a setting, the front mold groove 103 can accommodate the runner plate 20, which is beneficial for the cooperation between the front mold core 10 and the runner plate 20 and the sprue plate, and is beneficial for limiting the movement of the runner plate 20. Moreover, the runner plate 20 is accommodated in the front mold core 10, which is beneficial for forming an integral front mold core, without increasing the thickness after the superposition of the front mold core 10 and the runner plate 20, so as not to additionally increase the complexity of the mold. Further, the upper surface of the runner plate 20 is flush with the upper surface of the front mold core 10, which is beneficial for the cooperation with other components in the three-plate mold closing state.

[0047] In one embodiment, please refer to Figure 1 , Figure 4 and Figure 8, the runner plate 20 includes a runner plate body 21 and a runner pressing plate 22. The runner plate body 21 is movably arranged on one side of the front mold core 10 away from the front mold cavity 101. Specifically, the runner plate body 21 is movably arranged in the front mold groove 103. A runner groove 211 is provided on the side of the runner plate body 21 away from the front mold cavity 101. An insert mounting hole 212 is provided on the bottom wall of the runner groove 211. The insert mounting hole 212 penetrates the runner plate body 21 and communicates with the through hole 102. One end of the front mold insert 30 is detachably mounted in the insert mounting hole 212. Specifically, the insert mounting hole 212 can be a stepped hole, or a stepped platform is provided in the insert mounting hole 212. A flange is provided at the rear end of the front mold insert 30. The front end of the front mold insert 30 sequentially passes through the insert mounting hole 212 and the through hole 102 and extends into the front mold cavity 101. The flange at the rear end of the front mold insert 30 abuts against the stepped platform of the insert mounting hole 212. The runner pressing plate 22 is detachably arranged in the runner groove 211 and presses on the front mold insert 30. Specifically, the runner pressing plate 22 can be connected to the runner plate body 21 by screws or bolts to limit the front mold insert 30 between the runner pressing plate 22 and the runner plate body 21. With such a setting, when the front mold insert 30 is damaged, the front mold insert 30 can be directly taken out for replacement by disassembling the runner pressing plate 22, without having to disassemble and replace the entire front mold core 10, runner plate 20, etc., making the replacement more convenient, with high maintenance efficiency and cost savings. Moreover, the cooperation between the runner pressing plate 22 and the runner plate body 21 can improve the stability of the installation of the front mold insert 30 on the runner plate 20. Further, the upper surface of the runner pressing plate 22 is flush with the upper surface of the runner plate body 21, which is conducive to the flat cooperation of the sprue plate with the runner plate body 21 and the runner pressing plate 22 in the three-plate mold closing state, and is convenient for the distribution of the sub-runners 201 on the runner plate body 21 and the runner pressing plate 22. Further, at least part of the sub-runners 201 are provided on the runner pressing plate 22, and the runner pressing plate 22 has a through hole that communicates with the sub-runners 201 and penetrates the runner pressing plate 22. The rear end of the channel 301 of the front mold insert 30 communicates with the through hole of the runner pressing plate 22, and the front end of the channel 301 of the front mold insert 30 communicates with the front mold cavity 101, which is conducive to the fluid entering the front mold cavity 101 through the sub-runners 201, the through hole of the runner pressing plate 22, and the channel 301 of the front mold insert 30.

[0048] Optionally, in one embodiment, please refer to Figure 1 and Figure 8, the number of the flow channel grooves 211 and the flow channel pressure plate 22 can be two, each flow channel pressure plate 22 is arranged in a flow channel groove 211, and each flow channel groove 211 can be provided with two insert mounting holes 212 to correspondingly install two front mold inserts 30. It should be noted that the number of the flow channel grooves 211 and the flow channel pressure plate 22 is not limited to this, and the number of the insert mounting holes 212 and the front mold insert 30 is not limited to this, and one, three or more can be adaptively set according to actual production needs.

[0049] Optionally, in one embodiment, see Figure 1 When the first lock buckle 40 is disposed on the flow channel plate 20, one end of the first lock buckle 40 can be fixedly disposed on the side of the flow channel plate body 21 away from the front mold core 10; when the first lock hole is disposed on the flow channel plate 20, the first lock hole can be opened on the side of the flow channel plate body 21 away from the front mold core 10. Of course, when the first lock buckle 40 is disposed on the flow channel plate 20, one end of the first lock buckle 40 can be fixedly disposed on the side of the flow channel pressure plate 22 away from the front mold core 10, and when the first lock hole is disposed on the flow channel plate 20, the first lock hole can be opened on the side of the flow channel pressure plate 22 away from the front mold core 10.

[0050] It should be noted that the installation method of the front mold insert 30 on the flow channel plate 20 is not limited to this. In some other embodiments, the front mold insert 30 can be directly fixed on the flow channel plate 20, or can be directly and detachably connected to the flow channel plate 20 by screws or bolts, but is not limited to this.

[0051] In one embodiment, see Figure 1 and Figure 6, the front mold core assembly 100 further includes a limiting portion 50 which protrudes from the front mold core 10. The runner plate 20 is movably limited between the front mold core 10 and the limiting portion 50, that is, the runner plate 20 can only move between the front mold core 10 and the limiting portion 50. There is an activity distance for the runner plate 20 to move between the limiting portion 50 and the runner plate 20. Specifically, the runner plate body 21 is movably limited between the front mold core 10 and the limiting portion 50. The limiting portion 50 is arranged on the front mold core 10 near the front mold groove 103. A groove structure for accommodating the limiting portion 50 can be formed on the front mold core 10 near the front mold groove 103, so that the limiting portion 50 is embedded in the front mold core 10. With such a setting, the movement range of the runner plate 20 can be restricted, so that it can only move within the distance defined between the limiting portion 50 and the front mold core 10. When the three-plate mold is opened and the sprue plate and the A-plate are opened, the sprue plate drives the runner plate 20 and the front mold insert 30 to move relative to the front mold core 10 toward the side away from the front mold core through the cooperation of the first latch 40 and the first lock hole. When the runner plate 20 moves to abut against the limiting portion 50, its movement is restricted by the limiting portion 50. The sprue plate and the A-plate continue to move relatively and separately, so that the first latch 40 and the first lock hole are separated, so that the sprue plate is separated from the runner plate 20, preventing the runner plate 20 from being driven by the sprue plate to break away from the front mold core 10. It should be noted that in some other embodiments, the limiting portion 50 may not be provided. For example, the installation cavity of the A-plate can be set as a stepped cavity with a stepped platform. After the front mold core 10 is installed in the installation cavity of the A-plate, the runner plate 20 is movably limited between the front mold core 10 and the stepped platform of the installation cavity of the A-plate. There is an activity distance for the runner plate 20 to move between the runner plate 20 and the stepped platform of the installation cavity of the A-plate, that is, the runner plate 20 and the stepped platform of the installation cavity of the A-plate replace the function of the limiting portion 50. Among them, the limiting portion 50 can be a plate-like body, a sheet-like body, a rod-like body, etc., or a protrusion protruding from the front mold core 10, but not limited thereto. Any component that can achieve the function of limiting and resisting the runner plate 20 is acceptable.

[0052] Optionally, in one embodiment, two limiting portions 50 can be provided, respectively located on both sides of the runner plate 20 to improve the limiting effect. Of course, the number of the limiting portions 50 is not limited thereto, and one, three or more can be set according to actual needs.

[0053] Optionally, in one embodiment, please refer to Figure 1 、 Figure 6 and Figure 10, the runner plate 20 has a limiting groove 202. Specifically, the limiting groove 202 can be opened at the edge of the runner plate body 21. The limiting part 50 includes a fixed section 51 and a limiting section 52. The fixed section 51 is fixed to the front mold core 10, for example, it can be fixed to the front mold core 10 by screws or bolts. The limiting section 52 is connected to the fixed section 51, and the limiting section 52 extends into the limiting groove 202. Specifically, the fixed section 51 is fixed to the front mold core 10 near the front mold groove 103, and the limiting section 52 extends away from the front mold core 10 into the front mold groove 103. The fixed section 51 and the limiting section 52 can generally form an L-shaped limiting part 50. There is an activity distance for the runner plate 20 to move between the limiting section 52 and the bottom wall of the limiting groove 202, so that the runner plate 20 is movably limited between the limiting section 52 and the front mold core 10. With such a setting, when the three-plate mold is in the closed mold state, the upper surfaces of the limiting part 50, the runner plate 20 and the front mold core 10 are flush, so as not to interfere with the cooperation between the runner plate 20, the front mold core 10 and other components such as the sprue plate.

[0054] In one embodiment, please refer to Figure 5 and Figure 7 , the front mold core assembly 100 further includes a spring 60, and the spring 60 is arranged between the front mold core 10 and the runner plate 20. With such a setting, when the sprue plate and the A plate are opened, when the sprue plate drives the runner plate 20 and the front mold insert 30 to move relative to the front mold core 10 in a direction away from the front mold core through the cooperation of the first latch 40 and the first lock hole, the spring 60 can not only assist the runner plate 20 to move in a direction away from the front mold core 10, but also, when moving to the point where the first latch 40 and the first lock hole are disengaged, the spring 60 can support the runner plate 20 to prevent the runner plate 20 from moving back in a direction close to the front mold core 10, ensuring that the front mold insert 30 can maintain its state after being retracted first and prevent it from being inserted back into the front mold cavity and contacting the product. Optionally, the number of springs 60 can be set to multiple, and they can be evenly distributed between the runner plate 20 and the front mold core 10 to ensure stable support for the runner plate 20 after it moves away from the front mold core 10. Of course, the number of springs 60 can be set according to actual needs and is not uniquely limited here.

[0055] Optionally, in one embodiment, please refer to Figure 5 , Figure 7 and Figure 11, on one side of the front mold core 10 close to the runner plate 20, a first spring groove 104 is provided, and one end of the spring 60 close to the front mold core 10 is received in the first spring groove 104; on one side of the runner plate 20 close to the front mold core 10, a second spring groove 203 is provided, and one end of the spring 60 close to the runner plate 20 is received in the second spring groove 203. The position of the first spring groove 104 corresponds to the position of the second spring groove 203. With such a setting, the spring 60 can be limited, ensuring its stability between the runner plate 20 and the front mold core 10. In some other embodiments, only the first spring groove 104 or only the second spring groove 203 can also be provided.

[0056] In one embodiment, please refer to Figure 1 , Figure 7 and Figure 10 , the front mold core assembly 100 further includes a guiding portion 70. The guiding portion 70 protrudes from one side of the front mold core 10 facing away from the front mold cavity 101, and a guiding hole 204 slidably engaged with the guiding portion 70 is formed in the runner plate 20. With such a setting, the guiding hole 204 cooperates with the guiding portion 70 to guide and limit the movement of the runner plate 20 relative to the front mold core 10, enabling the runner plate 20 to move stably. Specifically, the guiding portion 70 can be a guiding post.

[0057] Please refer to Figures 12 to 16The present application also provides a three-plate mold 1000, which includes a front mold core assembly 100 of any of the above embodiments, and a panel 200, a nozzle plate 300, an A plate 400 and a B plate 500 arranged in sequence, the A plate 400 has an installation cavity 410 running through it, the B plate 500 is provided with a rear mold core 510 on one side close to the A plate 400, the front mold core 10 of the front mold core assembly 100 is fixed in the installation cavity 410, and the front mold core 10 of the front mold core assembly 100 is fixed in the installation cavity 410. The front mold cavity 101 cooperates with the rear mold core 510. When the three-plate mold 1000 is in the mold closing state, the front mold core 10 and the rear mold core 510 are buckled to form a cavity for molding the product; wherein, a first lock buckle 40 is provided on the side of the flow channel plate 20 of the front mold core assembly 100 away from the front mold core 10 of the front mold core assembly 100, and a first lock hole 3001 for plugging and cooperating with the first lock buckle 40 is opened on the side of the gate plate 300 close to the A plate 400, and the gate plate 300 is also provided with a first lock hole 3001 for plugging and cooperating with the first lock buckle 40. A vent hole connected to the first lock hole 3001 may be provided; of course, in some other embodiments, a first lock buckle 40 may be provided on the side of the nozzle plate 300 close to the A plate 400, and a first lock hole for plugging and matching with the first lock buckle 40 may be provided on the side of the flow channel plate 20 of the front mold core assembly 100 away from the front mold core 10 of the front mold core assembly 100; wherein a second lock buckle 210 is provided on the side of the panel 200 close to the nozzle plate 300, and the nozzle plate 3 A second lock hole 3002 for plugging and cooperating with the second lock buckle 210 is provided on the side of the sprue plate 300 close to the panel 200, and an exhaust hole connected to the second lock hole 3002 may also be provided on the sprue plate 300; of course, in some other embodiments, a second lock buckle 210 may be provided on the side of the sprue plate 300 close to the panel 200, and a second lock hole for plugging and cooperating with the second lock buckle 210 may be provided on the side of the panel 200 close to the sprue plate 300. It can be understood by those skilled in the art that the three-plate mold has other conventional structures of the three-plate mold in addition to the above-mentioned structure. In this embodiment, the improvement of the three-plate mold 1000 is mainly introduced, that is, the cooperative relationship between the panel 200, the sprue plate 300, the A plate 400 and the front mold core assembly 100. The structure of other three-plate molds can adopt any existing three-plate mold structure, which will not be repeated here.

[0058] The three-plate mold 1000 provided by the embodiment of the present application, due to adopting the front mold core assembly 100 of the above embodiment, thus has the same technical effects brought by the technical solution of the above front mold core assembly 100. When the three-plate mold 1000 is opened, the sprue plate 300 and the A plate 400 are first opened. The sprue plate 300 drives the runner plate 20 and the front mold insert 30 to move relative to the front mold core 10 toward the side away from the front mold core 10 through the cooperation of the first locking buckle 40 and the first locking hole 3001, so that the front mold insert 30 can be pulled out first relative to the front mold cavity 101, so that the front mold insert 30 is first separated from the product in the front mold cavity 101, thereby preventing the product in the front mold cavity 101 from adhering to the front mold insert 30. When the runner plate 20 moves to abut against the limiting portion 50 of the front mold core assembly 100, the runner plate 20 is resisted and stressed, so that the first locking buckle 40 is disengaged from the first locking hole 3001, and the sprue plate 300 and the runner plate 20 are separated. At this time, the spring 60 of the front mold core assembly 100 can support the runner plate 20 to prevent the runner plate 20 from moving toward the direction close to the front mold core 10, thereby realizing the prior pulling out of the front mold insert 30. When the subsequent A plate and B plate are opened, the product does not adhere to the front mold insert 30 and the front mold cavity 101 and is easy to demold, which can prevent the product from being strained during mold opening due to adhesion to the front mold insert, ensure the integrity of the product, and can prevent the front mold cavity 101 from being damaged and causing the three-plate mold to be damaged, ensuring the normal and efficient production of the three-plate mold; at the same time, since a second locking buckle 210 and a second locking hole 3002 are provided between the face plate 200 and the sprue plate 300, through the cooperation of the second locking buckle 210 and the second locking hole 3002, it can be prevented that the face plate 200 and the sprue plate 300 are first opened due to the force of the cooperation between the first locking buckle 40 and the first locking hole 3001 between the sprue plate 300 and the runner plate 20, so that there is a force of the cooperation between the locking buckle and the locking hole between the face plate 200 and the sprue plate 300, and between the sprue plate 300 and the runner plate 20, ensuring the correct mold opening sequence of the three-plate mold (the sprue plate and the A plate are opened first, the face plate and the sprue plate are opened second, and the A plate and the B plate are opened last).

[0059] In one embodiment, please refer to Figure 13 、 Figure 14 and Figure 16, the nozzle plate 300 includes a nozzle plate body 310 and a nozzle-saving insert 320. The nozzle-saving insert 320 is disposed on one side of the nozzle plate body 310 close to the A plate 400 and is used to cooperate with the runner plate 20 of the front mold core assembly 100. That is, when the three-plate mold 1000 is in the closed mold state, the nozzle-saving insert 320 is engaged with the runner plate 20. Specifically, the front mold core 10 is fixed to the lower part of the installation cavity 410, and a space is formed in the upper part of the installation cavity 410 for the nozzle-saving insert 320 to extend into. When the three-plate mold is in the closed mold state, the nozzle-saving insert 320 can extend into the A plate 400 to cooperate with the runner plate 20. Among them, the three-plate mold 1000 further includes a sprue bushing 600. A main runner is provided inside the sprue bushing 600. The sprue bushing 600 is disposed on the panel 200, and the sprue bushing 600 passes through the nozzle plate body 310 and the nozzle-saving insert 320 and is connected to the branch runner 201 of the runner plate 20 of the front mold core assembly 100, so that the fluid can reach the branch runner 201 via the sprue bushing 600. Among them, the first latch 40 is disposed on one side of the runner plate 20 of the front mold core assembly 100 facing away from the front mold core 10 of the front mold core assembly 100, and the first locking hole 3001 is opened on one side of the nozzle-saving insert 320 close to the A plate 400. Of course, in some other embodiments, it may also be that the first latch 40 is disposed on one side of the nozzle-saving insert 320 close to the A plate 400, and the first locking hole is opened on one side of the runner plate 20 of the front mold core assembly 100 facing away from the front mold core 10 of the front mold core assembly 100. With such a setting, by the cooperation of the nozzle-saving insert 320 and the runner plate 20, the sprue bushing 600 passes through the nozzle plate body 310 and the nozzle-saving insert 320 and is connected to the branch runner 201 of the runner plate 20, shortening the sprue length, saving the sprue length, and saving materials.

[0060] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A front mold core assembly is applied to a three-plate mold, wherein the three-plate mold has a nozzle plate and an A plate, and the A plate has a mounting cavity running through it. It is characterized in that The front mold core assembly comprises: A front mold core, the front mold core is fixedly connected to the mounting cavity of the A plate by screws or bolts, and the front mold core has a front mold cavity and a through hole connected to the front mold cavity; A flow channel plate, the flow channel plate is movably arranged on a side of the front mold core away from the front mold cavity, the flow channel plate has a branch flow channel, and the branch flow channel includes a plurality of interconnected flow channels; and A front mold insert, the front mold insert is arranged on the flow channel plate and penetrates the flow channel plate and the through hole, a channel is arranged inside the front mold insert, one end of the channel is connected to the branch flow channel, and the other end of the channel is connected to the front mold cavity; In which, a first lock buckle is provided on the side of the flow channel plate away from the front mold core, and a first lock hole for plugging and cooperating with the first lock buckle is opened on the side of the sprue plate close to the A plate; or, a first lock buckle is provided on the side of the sprue plate close to the A plate, and a first lock hole for plugging and cooperating with the first lock buckle on the sprue plate is opened on the side of the flow channel plate away from the front mold core.

2. The front mold core assembly according to claim 1, Features: A front mold groove is provided on the front mold core at a side away from the front mold cavity, and the flow channel plate is movably arranged in the front mold groove.

3. The front mold core assembly according to claim 1, It is characterized in that The flow channel plate comprises: A flow channel plate body, wherein a flow channel groove is provided on a side of the flow channel plate body away from the front mold cavity, an insert mounting hole is provided on the bottom wall of the flow channel groove, the insert mounting hole passes through the flow channel plate body and is connected to the through hole, and one end of the front mold insert is detachably mounted in the insert mounting hole; and A flow channel pressing plate is detachably arranged in the flow channel groove and pressed on the front mold insert.

4. The front mold core assembly according to any one of claims 1 to 3, Features: The front mold core assembly also includes a limiting portion, which is protrudingly arranged on the front mold core. The flow channel plate is movable limited between the front mold core and the limiting portion. There is a movable distance between the limiting portion and the flow channel plate for the flow channel plate to move.

5. The front mold core assembly according to claim 4, It is characterized in that The flow channel plate has a limiting groove, and the limiting portion includes: a fixing section, the fixing section being fixed to the front mold core; and The limiting section is connected to the fixing section, the limiting section extends into the limiting groove, and there is a movable distance between the limiting section and the bottom wall of the limiting groove for the flow channel plate to move.

6. The front mold core assembly according to any one of claims 1 to 3, Features: The front mold core assembly also includes a spring, and the spring is arranged between the front mold core and the flow channel plate.

7. The front mold core assembly according to claim 6, Features: On one side of the front mold core close to the runner plate, a first spring groove is provided, and one end of the spring close to the front mold core is received in the first spring groove; and / or, on one side of the runner plate close to the front mold core, a second spring groove is provided, and one end of the spring close to the runner plate is received in the second spring groove.

8. The front mold core assembly according to any one of claims 1 to 3, characterized in that: The front mold core assembly further includes a guiding portion, the guiding portion protrudes from a side of the front mold core facing away from the front mold cavity, and a guiding hole slidably engaged with the guiding portion is formed in the runner plate.

9. A three-plate mold, characterized in that, The three-plate mold includes: A panel, a sprue plate, a plate A and a plate B arranged in sequence, the plate A has an installation cavity penetrating through it, and a rear mold core is provided on a side of the plate B close to the plate A; and The front mold core assembly according to any one of claims 1 to 8, the front mold core of the front mold core assembly is fixed in the installation cavity, and the front mold cavity of the front mold core of the front mold core assembly cooperates with the rear mold core; Wherein, a second locking buckle is provided on a side of the panel close to the sprue plate, and a second locking hole for plugging and cooperating with the second locking buckle is formed on a side of the sprue plate close to the panel; or, a second locking buckle is provided on a side of the sprue plate close to the panel, and a second locking hole for plugging and cooperating with the second locking buckle is formed on a side of the panel close to the sprue plate.

10. The three-plate mold according to claim 9, characterized in that, The sprue plate includes: A sprue plate body; and A sprue-saving insert, the sprue-saving insert is arranged on a side of the sprue plate body close to the plate A and is used for cooperating with the runner plate of the front mold core assembly; wherein, the first locking buckle is arranged on a side of the runner plate of the front mold core assembly facing away from the front mold core of the front mold core assembly, and the first locking hole is formed on a side of the sprue-saving insert close to the plate A; or, the first locking buckle is arranged on a side of the sprue-saving insert close to the plate A, and the first locking hole is formed on a side of the runner plate of the front mold core assembly facing away from the front mold core of the front mold core assembly; Wherein, the three-plate mold further includes a sprue bushing, the sprue bushing is arranged on the panel, and the sprue bushing penetrates through the sprue plate body and the sprue-saving insert and is communicated with the branch runner of the runner plate of the front mold core assembly.

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