CN216885016U - Injection mold capable of achieving secondary demolding - Google Patents

Abstract

The utility model belongs to the technical field of injection molds, and particularly relates to an injection mold for secondary demolding, which comprises an upper mold set and a lower mold set which are sequentially connected from top to bottom, wherein a lower mold core is arranged in the lower mold set, an upper mold core matched with the lower mold core is arranged in the upper mold set, the lower mold core comprises a lower mold base plate and a first line position mechanism, the first line position mechanism is fixedly arranged on the lower mold base plate, the upper mold core comprises an upper mold base plate and a second line position mechanism, the second line position mechanism is arranged on the upper mold base plate, and an upper mold insert is accommodated between the upper mold base plate and the first line position mechanism; when the injection mold is used for demolding, the first slide mechanism is controlled to move towards two sides, and then the second slide mechanism moves in the vertical direction to drive the upper mold insert to be separated from the inverted buckle, so that demolding action is completed, damage to a plastic product caused by overlarge force during demolding is effectively avoided, the quality of the plastic product is guaranteed, and demolding efficiency is greatly improved.

Description

Injection mold capable of achieving secondary demolding

Technical Field

The utility model belongs to the technical field of injection molds, and particularly relates to an injection mold with secondary demolding.

Background

The plastic product is widely applied to daily life, the plastic product is produced through an injection mold, completely molten plastic materials are stirred through a screw at a certain temperature, high pressure is used for injecting into a mold cavity, a molded product is obtained after cooling and solidification, the plastic product with a complete structure and accurate size is obtained, and then parts with complex shapes can be produced in batches.

At present, in the injection molding process of an injection mold used in the market, a plastic product is difficult to take out from a cavity after one-time demolding action is completed due to the complex structure of the plastic product, and the plastic product is easily damaged due to the overlarge piece taking force, so that the quality of the product is influenced, and the demolding efficiency is greatly influenced. Therefore, it is necessary to design an injection mold with secondary demolding, thereby ensuring the quality of the plastic parts.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an injection mold for secondary demolding, and aims to solve the technical problems that in the prior art, due to the fact that a plastic product is complex in structure, the product is easy to damage during demolding and the demolding efficiency is low.

In order to achieve the above object, an embodiment of the present invention provides an injection mold for secondary demolding, which includes an upper mold set and a lower mold set sequentially connected from top to bottom, wherein a lower mold core is disposed in the lower mold set, an upper mold core matched with the lower mold core is disposed in the upper mold set, the lower mold core includes a lower mold base plate and a first slide mechanism, the first slide mechanism is fixedly disposed on the lower mold base plate, the upper mold core includes an upper mold base plate and a second slide mechanism, the second slide mechanism is mounted on the upper mold base plate, and an upper mold insert is accommodated between the upper mold base plate and the first slide mechanism.

Optionally, the upper die assembly comprises an upper die fixing plate and an upper die plate which are sequentially arranged from top to bottom in an overlapped mode, the upper die core is arranged in the upper die plate, the second slide mechanism comprises an injection molding plate fixedly arranged on the upper die plate, a plurality of upper die sliding blocks fixedly arranged in the injection molding plate, a plurality of limit travel blocks fixedly arranged in the upper die plate and limiting the upper die sliding blocks, a plurality of demoulding pull buckles installed on the upper die sliding blocks and matched with the limit travel blocks, elastic pieces are further arranged in the injection molding plate, and the upper die sliding blocks are connected in pairs through first elastic pieces.

Optionally, the injection molding plate is provided with an injection molding groove, the upper mold insert is provided with an injection molding hole, one end of the injection molding hole is connected with the injection molding groove, and the other end of the injection molding hole is connected with the lower module.

Optionally, the stroke limiting block is provided with an inclined plane, the top end of the inclined plane is provided with a limiting table, the upper die sliding block is abutted to the inclined plane, and the upper die sliding block is limited to the limiting table.

Optionally, the upper die sliding block is provided with a limiting hole, the demolding pulling buckle is inserted into the limiting hole, the demolding pulling buckle is provided with a first convex part and a second convex part, the first convex part is movably abutted against the limiting hole, and the second convex part is movably abutted against the limiting table.

Optionally, the lower die assembly includes lower bolster, backing plate and the lower mould fixed plate that from top to bottom coincide in proper order and set up, lower mould benevolence set up in the lower bolster, first action position mechanism includes that a plurality of fixed wedges, a plurality of activities that set up at the lower mould bedplate set up lower mould bedplate and with the movable wedge of the mutual lock joint of fixed wedge with be fixed in a plurality of lower mould sliders of movable wedge.

Optionally, the lower die slide blocks are matched with an injection molding piece, the injection molding piece is further connected with the upper die insert, and the injection molding piece and the upper die insert are matched together to complete injection molding of a machined part.

Optionally, the lower die fixing plate is provided with an ejection assembly, and the ejection assembly includes an ejection base plate mounted on the lower die fixing plate, an ejection fixing plate fixed on the ejection base plate, and a plurality of ejector pins arranged on the ejection fixing plate and sequentially penetrating through the base plate and the lower die plate from bottom to top.

Optionally, the ejection assembly further includes a plurality of spring rods fixedly disposed on the ejection fixing plate, the spring rods sequentially penetrate through the base plate and the lower die plate from bottom to top, a second elastic member is sleeved on the spring rods, and the second elastic member is disposed between the base plate and the ejection fixing plate.

Optionally, an injection molding opening is formed in the upper die fixing plate, a positioning ring is fixedly installed on the injection molding opening, an injection molding pipeline is arranged below the injection molding opening, the injection molding pipeline is communicated with the injection molding groove, and the injection molding pipeline penetrates through the upper die fixing plate.

One or more technical schemes in the injection mold with secondary demolding provided by the embodiment of the utility model at least have one of the following technical effects:

the lower die core is arranged in the lower die set, the lower die core comprises a lower die base plate and a first line position mechanism, the upper die core is arranged in the upper die set, the upper die core comprises an upper die base plate and a second line position mechanism, the first line position mechanism is fixedly arranged on the lower die base plate, the second line position mechanism is arranged on the upper die base plate, and an upper die insert is accommodated between the upper die base plate and the first line position mechanism; when the injection mold is used for demolding, the first slide mechanism is controlled to move towards two sides firstly, then the second slide mechanism moves in the vertical direction to drive the upper mold insert to be separated from the inverted buckle, so that demolding action is completed, damage to a plastic product caused by overlarge force during demolding is effectively avoided, the quality of the plastic product is guaranteed, the demolding efficiency is greatly improved, and the injection mold has high practicability.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic diagram of an overall structure of a two-shot injection mold according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an internal structure of a two-shot injection mold according to an embodiment of the present invention;

FIG. 3 is a schematic view of another internal structure of a two-shot injection mold according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a second column mechanism according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a second column mechanism according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of an upper mold insert provided in accordance with an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a lower mold core according to an embodiment of the present invention;

fig. 8 is a schematic view of another internal structure of the injection mold with secondary demolding according to the embodiment of the utility model.

Wherein, in the figures, the respective reference numerals:

upper die set-100 upper die plate-101 second slide mechanism-102

Upper mold fixing plate-103 injection opening-104 positioning ring-105

Injection molding pipeline-106 upper mold core-110 upper mold base plate-111

Injection molding plate-112 injection molding groove-1121 upper mold insert-113

Injection hole-1131 upper die slide-114 spacing hole-1141

Travel limit block-115 inclined plane-1151 limit table-1152

Demold tab-116 first projection-1161 second projection-1162

First elastic component-117 lower die set-200 lower die plate-201

Backing plate-202 lower die fixing plate-203 injection molding-204

Lower die core-210 lower die base plate-211 first slide mechanism-212

Fixed wedge-2121 movable wedge-2122 lower die slide-2123

Ejection assembly 220 ejection seat plate 221 ejection fixing plate 222

Thimble-223 spring rod-224 second elastic piece-225.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1 to 4, an injection mold for secondary demolding is provided, which includes an upper mold set 100 and a lower mold set 200 connected in sequence from top to bottom. The lower die set 200 is internally provided with a lower die core 210, the upper die core 110 matched with the lower die core 210 is arranged in the upper die set 100, the lower die core 210 comprises a lower die base plate 211 and a first moving mechanism 212, the first moving mechanism 212 is fixedly arranged on the lower die base plate 211, the upper die core 110 comprises an upper die base plate 111 and a second moving mechanism 102, the second moving mechanism 102 is arranged on the upper die base plate 111, and an upper die insert 113 is accommodated between the upper die base plate 111 and the first moving mechanism 212.

In the present invention, the lower die set 200 is provided with the lower die 210, the lower die 210 includes a lower die base plate 211 and a first slide mechanism 212, the upper die set 100 is provided with the upper die 110, and the upper die 110 includes an upper die base plate 111 and a second slide mechanism 102. The first slide mechanism 212 is fixedly arranged on the lower mold base plate 211, the second slide mechanism 102 is arranged on the upper mold base plate 111, and an upper mold insert 113 is accommodated between the upper mold base plate 111 and the first slide mechanism 212; when the injection mold is used for demolding, the first slide mechanism 212 is controlled to move towards two sides firstly, then the second slide mechanism 102 moves in the vertical direction to drive the upper mold insert 113 to be separated from the inverted buckle, so that demolding action is completed, damage to a plastic product caused by overlarge force during demolding is effectively avoided, the quality of the plastic product is guaranteed, the demolding efficiency is greatly improved, and the high practicability is achieved.

Specifically, in another embodiment of the present invention, as shown in fig. 1 to 5, the upper module 100 includes an upper fixing plate 103 and an upper mold plate 101 stacked in sequence from top to bottom. The upper mold core 110 is disposed in the upper mold plate 101, the second slide mechanism 102 includes an injection molding plate 112 fixedly disposed on the upper mold base plate 111, a plurality of upper mold sliders 114 fixedly disposed in the injection molding plate 112, a plurality of stroke limiting blocks 115 fixed in the upper mold plate 101 and limiting the upper mold sliders 114, and a plurality of demolding fasteners 116 mounted on the upper mold sliders 114 and cooperating with the stroke limiting blocks 115, an elastic member 117 is further disposed in the injection molding plate 112, and the upper mold sliders 114 are connected in pairs by a first elastic member 117. By arranging the upper die slide block 114 in the injection molding plate 112, the demolding pull buckle 116 is inserted into the upper die slide block 114, so that the upper die slide block 114 moves when being pulled by the demolding pull buckle 116; and the stroke limiting block 115 is fixed in the upper die plate 101, so that the stroke limiting block 115 can effectively limit the movement of the upper die slide 114.

In another embodiment of the present invention, as shown in fig. 1, 4 and 6, the injection plate 112 is provided with an injection groove 1121, the upper mold insert 113 is provided with an injection hole 1131, one end of the injection hole 1131 is connected to the injection groove 1121, and the other end of the injection hole 1131 is connected to the lower mold set 200. The injection groove 1121 is formed in the injection plate, the injection hole 1131 is formed in the upper mold insert 113, the injection groove 1121 is connected to one end of the injection hole 1131, and the other end of the injection hole 1131 is connected to the lower mold set 200, thereby guiding the injection of the plastic into the lower mold set 200.

Specifically, in another embodiment of the present invention, as shown in fig. 4 and 5, the stroke limiting block 115 is provided with an inclined surface 1151, a limiting table 1152 is provided at a top end of the inclined surface 1151, the upper die sliding block 114 abuts against the inclined surface 1151, and the upper die sliding block 114 is limited at the limiting table 1152. By providing the inclined surface 1151 on the stroke limiting block 115 and connecting the plurality of upper die sliders 114 in pairs by the first elastic member 117, after the upper die sliders 114 are forced to displace, the first elastic member 117 compresses, and the upper die sliders 114 move in the vertical direction along with the inclined surface 1151; by arranging the limit table 1152, the upper die sliding block 117 is limited to move after being pulled by the demolding pulling buckle 116 to move, and the displacement distance of the upper die sliding block 114 is effectively controlled.

Further, the upper die sliding block 114 is provided with a limiting hole 1141, the demolding buckle 116 is inserted into the limiting hole 1141, the demolding buckle 116 is provided with a first protrusion 1161 and a second protrusion 1162, the first protrusion 1161 is movably abutted to the limiting hole 1141, and the second protrusion 1162 is movably abutted to the limiting table 1152. By inserting the release tab 116 into the position-limiting hole 1141, the release tab 116 is limited when moving by the first protrusion 1161 and the position-limiting hole 1141, and the release tab 116 cannot be released from the upper mold slide 114 when moving upward; the second protrusion 1162 is also configured to cooperate with the limiting table 1152, so that the release tab 116 cannot be released from the upper mold slider 114 even when moving downward, thereby limiting the movement of the release tab 116.

Specifically, in another embodiment of the present invention, as shown in fig. 1, 2, 3 and 7, the lower die set 200 includes a lower die plate 201, a backing plate 202 and a lower die fixing plate 203, which are stacked in sequence from top to bottom. The lower mold insert 210 is disposed in the lower mold plate 201, the first slide mechanism 212 includes a plurality of fixed wedges 2121, a plurality of movable wedges 2122, and a plurality of lower mold sliders 2123, wherein the fixed wedges 2121, the movable wedges 2122, the lower mold base plate 211 and the fixed wedges 2121 are fastened to each other, and the lower mold sliders 2123 are matched with each other, such that the upper mold insert 113 is limited in the lower mold sliders 2123. Since the movable wedge 2122 is fastened to the fixed wedge 2121, the fixed wedge 2121 drives the movable wedge 2122 to move outwards, and the lower die slider 2123 is fixed to the movable wedge 2122, so the fixed wedge 2121 drives the lower die slider 2123 to move. Therefore, the limitation of the lower die slide block 2123 on the upper die insert 113 is released, and the fixed wedge 2121 and the movable wedge 2122 are matched with each other in a driving mode, so that the demolding is convenient and fast.

Further, a plurality of the lower mold sliders 2123 are matched with an injection molding piece 204, the injection molding piece 204 is further connected with the upper mold insert 113, and the injection molding piece 204 and the upper mold insert 113 are matched together to complete the molding of the injection molded workpiece. The injection molding piece 204 is accommodated in the lower mold slider 2123 by mutually matching the lower mold sliders 2123, and the injection molding piece 204 can be released from being reversed and separated from the lower mold slider 2123 only by pulling the lower mold slider 2123 outwards during demolding; and the injection-molded part 204 is connected to the upper mold insert 113 and is thus injection-molded into the injection-molded part 204.

Specifically, in another embodiment of the present invention, as shown in fig. 1, 2, 3 and 8, the lower mold fixing plate 203 is mounted with an ejector assembly 220. The ejection assembly 220 includes an ejection seat plate 221 mounted on the lower mold fixing plate 203, an ejection fixing plate 222 fixed on the ejection seat plate 221, and a plurality of ejector pins 223 disposed on the ejection fixing plate 222 and sequentially passing through the pad plate 202 and the lower mold plate 201 from bottom to top.

Further, the ejection assembly 220 further includes a plurality of spring rods 224 fixed on the ejection fixing plate 222. The spring rod 224 sequentially penetrates through the base plate 202 and the lower die plate 201 from bottom to top, a second elastic piece 225 is sleeved on the spring rod 224, and the second elastic piece 225 is arranged between the base plate 202 and the ejection fixing plate 222. By arranging the ejection assembly 220 in the lower die set 200, the second elastic member 225 drives the ejection assembly 220 to move, so as to drive the ejection block assembly 220 to eject the injection molding workpiece.

Specifically, in another embodiment of the present invention, as shown in fig. 1 and 3, an injection opening 104 is provided on the upper mold fixing plate 103, a positioning ring 105 is fixedly installed on the injection opening 104, and an injection pipe 106 is provided below the injection opening 104. The injection molding pipeline 106 is communicated with the injection molding groove 1121, and the injection molding pipeline 106 penetrates through the upper mold fixing plate 103. And injecting the injection molding material from the injection molding port 104 at high pressure to realize the molding of the injection molding workpiece.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides an injection mold of secondary drawing of patterns, its characterized in that, including last module (100) and lower module (200) that from top to bottom connects gradually, be equipped with a lower mould benevolence (210) in lower module (200), go up be equipped with in module (100) one with lower mould benevolence (210) matched with goes up mould benevolence (110), lower mould benevolence (210) are including lower mould bedplate (211) and first line position mechanism (212), first line position mechanism (212) set firmly in lower mould bedplate (211), go up mould benevolence (110) and go up mould bedplate (111) and second line position mechanism (102), second line position mechanism (102) install in go up mould bedplate (111), go up mould bedplate (111) with it goes up mould mold insert (113) to hold between first line position mechanism (212).

2. The injection mold with secondary demolding according to claim 1, wherein the upper mold set (100) comprises an upper mold fixing plate (103) and an upper mold plate (101) which are sequentially overlapped from top to bottom, the upper die core (110) is arranged in the upper die plate (101), the second slide mechanism (102) comprises an injection molding plate (112) fixedly arranged on the upper die plate (111), a plurality of upper die sliding blocks (114) fixedly arranged in the injection molding plate (112), a plurality of stroke limiting blocks (115) which are fixed in the upper die plate (101) and limit the upper die sliding blocks (114), and a plurality of demoulding pull buckles (116) which are arranged on the upper die sliding blocks (114) and are matched with the stroke limiting blocks (115), an elastic piece (117) is further arranged in the injection molding plate (112), and the upper mold sliding blocks (114) are connected in pairs through a first elastic piece (117).

3. The double-release injection mold according to claim 2, wherein the injection plate (112) is provided with an injection groove (1121), the upper mold insert (113) is provided with an injection hole (1131), one end of the injection hole (1131) is connected with the injection groove (1121), and the other end of the injection hole (1131) is connected with the lower mold set (200).

4. The injection mold of secondary demolding according to claim 2, characterized in that the stroke limiting block (115) is provided with a slope (1151), the top end of the slope (1151) is provided with a limiting table (1152), the upper mold sliding block (114) abuts against the slope (1151), and the upper mold sliding block (114) is limited on the limiting table (1152).

5. The injection mold with secondary demolding according to claim 4, wherein the upper mold sliding block (114) is provided with a limiting hole (1141), the demolding pulling buckle (116) is inserted into the limiting hole (1141), the demolding pulling buckle (116) is provided with a first convex portion (1161) and a second convex portion (1162), the first convex portion (1161) is movably abutted against the limiting hole (1141), and the second convex portion (1162) is movably abutted against the limiting table (1152).

6. The injection mold of secondary demolding according to any one of claims 1-5, wherein the lower mold set (200) comprises a lower mold plate (201), a backing plate (202) and a lower mold fixing plate (203) which are sequentially stacked from top to bottom, the lower mold core (210) is disposed in the lower mold plate (201), and the first slide mechanism (212) comprises a plurality of fixed wedges (2121) fixedly disposed on a lower mold base plate (211), a plurality of movable wedges (2122) movably disposed on the lower mold base plate (211) and fastened to the fixed wedges (2121), and a plurality of lower mold sliders (2123) fixed to the movable wedges (2122).

7. The two-shot molding apparatus according to claim 6, wherein a plurality of the lower mold slides (2123) cooperate with an injection molding member (204), the injection molding member (204) further being coupled to the upper mold insert (113), the injection molding member (204) cooperating with the upper mold insert (113) to complete the injection molding of the workpiece.

8. The injection mold of the secondary demolding of claim 6, wherein the lower mold fixing plate (203) is provided with an ejection assembly (220), the ejection assembly (220) comprises an ejection seat plate (221) arranged on the lower mold fixing plate (203), an ejection fixing plate (222) fixed on the ejection seat plate (221), and a plurality of ejector pins (223) arranged on the ejection fixing plate (222) and sequentially penetrating through the backing plate (202) and the lower mold plate (201) from bottom to top.

9. The injection mold with secondary demolding according to claim 8, wherein the ejection assembly (220) further comprises a plurality of spring rods (224) fixedly arranged on the ejection fixing plate (222), the spring rods (224) sequentially penetrate through the backing plate (202) and the lower mold plate (201) from bottom to top, a second elastic member (225) is sleeved on the spring rods (224), and the second elastic member (225) is arranged between the backing plate (202) and the ejection fixing plate (222).

10. The injection mold of secondary demolding according to claim 3, wherein an injection port (104) is formed in the upper mold fixing plate (103), a positioning ring (105) is fixedly mounted on the injection port (104), an injection pipeline (106) is arranged below the injection port (104), the injection pipeline (106) is communicated with the injection groove (1121), and the injection pipeline (106) penetrates through the upper mold fixing plate (103).

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