CN209971404U

CN209971404U - Injection mold side mechanism of loosing core

Info

Publication number: CN209971404U
Application number: CN201920646366.4U
Authority: CN
Inventors: 廖坤; 王蓝; 魏威; 施远斌; 张华军
Original assignee: YAAN FANHUA TOOLING CO Ltd
Current assignee: YAAN FANHUA TOOLING CO Ltd
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2020-01-21
Anticipated expiration: 2029-05-07

Abstract

The utility model relates to the field of mold design and manufacture, and discloses a side core-pulling mechanism of an injection mold, which comprises a fixed mold core and a movable mold core, wherein a guide locking block is embedded and fixed in the lower part of the fixed mold core, and a guide locking column is obliquely arranged on the lower surface of the guide locking block; a sliding rail is embedded and fixed at the upper part of the movable mould core, a sliding block capable of sliding is arranged in a sliding groove of the sliding rail, the sliding block is provided with a guide locking groove matched with the guide locking column, and one end of the sliding block is connected with the lateral mould core; when the fixed die core is attached to the movable die core, the guide locking column extends into the guide locking groove and can be wedged with the guide locking groove to avoid horizontal movement of the sliding block. The utility model provides a current injection mold's side mechanism of loosing core structure complicated, the problem that the processing technology required precision is high, the process is loaded down with trivial details complicated.

Description

Injection mold side mechanism of loosing core

Technical Field

The utility model relates to a mould manufacturing and designing field specifically indicates an injection mold side mechanism of loosing core.

Background

The mould is various moulds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. Wherein the injection mold is a tool for producing plastic products and also a tool for giving the plastic products complete structure and precise dimensions. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

The common injection molding machine only has one mold opening direction, so the injection mold also has only one mold opening direction, but a plurality of core pulling directions are needed on the mold because the side wall of a plurality of plastic products is provided with through holes, grooves or bosses, and the core pulling of the side surfaces must be completed before the plastic parts are demolded. The mechanism which can complete side core pulling before demoulding of the product, ensure that the product can be safely demoulded and can be completely reset after demoulding of the product is called a side core pulling mechanism. The side core-pulling mechanism is simply a mold opening mechanism which is inconsistent with the mold opening direction of the movable mold and the fixed mold. The basic principle is to convert the vertical movement of opening and closing the die into the lateral movement.

For example, as shown in fig. 1, in order to pour the fastener shown in a part a in fig. 1, a required molding cavity is shown at the tail end of the lateral core in fig. 2, in order to ensure the molding of the fastener, the lateral core can only horizontally pull the core laterally, and the fastener can be damaged by directly pulling the core vertically. As shown in fig. 3 and 4, in the existing side core-pulling mechanism, in the mold-closing process, the movable mold core 6 moves upward and gradually approaches the fixed mold core 3, the guide rod 8 gradually extends into the guide hole 9, and the guide rod 8 guides the slide block 7 to drive the lateral mold core 1 to slide leftward due to the oblique arrangement of the guide rod 8. When the die assembly is completed, the upper surface of the movable die core 6 is attached to the lower surface of the fixed die core 3, and the lateral die core 1 slides in place to be combined with the rest of the die cores to form a die cavity. At the moment, the guide rod 8 extends into the guide hole 9, the inclined surface of the lower end of the locking block 4 is wedged tightly with the inclined surface of the right end of the sliding block 7, and the phenomenon that when glue is injected into the cavity, the sliding block 7 is pushed by glue to move so that the sliding block 7 moves to enable the lateral mold core 1 to shift to cause deformation of an injection molding product and influence on molding quality is avoided. After the injecting glue is accomplished through cooling shaping, movable mould benevolence 6 divides the mould with the cover half benevolence 3, and movable mould benevolence 6 moves down and separates with cover half benevolence 3, and guide bar 8 can guide slider 7 to drive side direction core 1 and slide right this moment, makes side direction core 1 and plastic product separation, also can break away from the contact between latch segment 4 and the slider 7, avoids side direction core 1 to influence the injection molding product, makes the injection molding product can the safe drawing of patterns.

However, the existing injection mold middle core-pulling mechanism has a complex mechanism system (comprising a forming insert, a sliding block 7, a sliding rail 5, a guide rod 8 and a locking block 4), and firstly, the structure is complex, so that the precision requirement and the failure rate are high; secondly, the complicated structure leads to the loaded down with trivial details complicacy of processing, and especially the mounting hole of guide post and guiding hole required precision are high, and inclined hole processing technology is difficult.

SUMMERY OF THE UTILITY MODEL

Based on above technical problem, the utility model provides an injection mold mechanism of loosing core laterally, the side that has solved current injection mold mechanism of loosing core structure is complicated, the problem that the processing technology required precision is high, the loaded down with trivial details complicacy of process.

For solving the above technical problem, the utility model discloses a technical scheme as follows:

a side core-pulling mechanism of an injection mold comprises a fixed mold core and a movable mold core, wherein a guide locking block is embedded and fixed at the lower part of the fixed mold core, and a guide locking column is obliquely arranged on the lower surface of the guide locking block; a sliding rail is embedded and fixed at the upper part of the movable mould core, a sliding block capable of sliding is arranged in a sliding groove of the sliding rail, the sliding block is provided with a guide locking groove matched with the guide locking column, and one end of the sliding block is connected with the lateral mould core; when the fixed die core is attached to the movable die core, the guide locking column extends into the guide locking groove and can be wedged with the guide locking groove to avoid horizontal movement of the sliding block.

The utility model discloses in, at the compound die in-process, movable mould benevolence rebound presses close to the fixed mould benevolence gradually, and in the direction locking inslot was empowered gradually to the direction locking post, because direction locking post slant set up, the direction locking post can guide the slider to drive the side direction core and slide left. When the die assembly is completed, the upper surface of the movable die core is attached to the lower surface of the fixed die core, and the lateral die core slides in place to be combined with the rest of the die cores to form a die cavity. At the moment, the guide locking column extends into the guide locking groove and is wedged tightly with the guide locking groove, so that the situation that when glue is injected into the cavity, the glue body pushes the sliding block to cause the sliding block to move, so that the lateral mold core is shifted to cause deformation of an injection molding product, and the molding quality is influenced is avoided. After the glue injection is finished and formed through cooling, the movable mold core and the fixed mold core are separated, the movable mold core moves downwards and is separated from the fixed mold core, and the guide locking column can guide the sliding block to drive the lateral mold core to slide rightwards, so that the lateral mold core is separated from the plastic product, the lateral mold core is prevented from influencing the injection molding product, and the injection molding product can be safely demoulded.

Preferably, the guide locking post is in the shape of a beveled quadrangular prism.

As a preferred mode, the lower ends of the two inclined planes of the guide locking post are both provided with round corners, and the contact positions of the bottom of the guide locking groove and the round corners of the guide locking post are also provided with matched round corners.

As a preferred mode, the two inner sides of the lower end of the sliding rail are provided with clamping grooves, the two sides of the lower end of the sliding block are provided with clamping blocks, and the clamping blocks are clamped in the clamping grooves.

As an optimal mode, the end head of the sliding block is provided with a concave splicing opening, and the end head of the lateral mold core is provided with a convex splicing opening matched with the concave splicing opening.

As a preferred mode, the movable mold core is embedded in the groove for placing the sliding rail, and two corners of the inner side of the groove are both provided with arc-shaped notches.

As a preferred mode, the guide locking column is fixedly connected with the fixed die core through a fixing screw, and the slide rail is fixedly connected with the movable die core through a fixing screw.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model is suitable for a plastic product needs the short distance side to be loosed core, adopts this structure can guarantee under the not influenced prerequisite of product shaping, simplifies the design, reduces processing technology and processing cost, and assembling process is convenient simple simultaneously.

(2) The utility model discloses a direction locking post is oblique quadrangular prism form, increases the contact surface of direction locking post and direction locking groove, makes direction locking post outside original guide effect, can also with direction locking groove wedging to play limiting displacement to the slider.

(3) The utility model discloses a two inclined plane lower extremes of direction locking post all are equipped with the fillet, and the fillet contact position of direction locking tank bottom and direction locking post also is equipped with the fillet of looks adaptation, and the fillet can remove the sharp limit of two inclined plane lower extremes of direction locking post, and is steady along with its and the contact of direction locking groove, does benefit to the direction assembly.

(4) The utility model discloses a two inboards of slide rail lower extreme are equipped with the draw-in groove, and slider lower extreme both sides are equipped with the fixture block, and the fixture block joint plays limiting displacement to the slider within the draw-in groove, makes it can only be in the slide rail horizontal slip.

(5) The utility model discloses a slider end is equipped with concave concatenation mouth, and side direction core end is equipped with the protruding concatenation head with concave concatenation mouthful adaptation, and in the protruding article joint card of side direction core gone into the concave concatenation mouth of slider, the slider alright drive side direction core horizontal slip, and both through this structural connection, the dismouting is swift convenient.

(6) The utility model discloses a movable mould benevolence embedding is placed the inboard both angles of recess of slide rail and is all equipped with the arc breach, can go deep into the instrument in the arc breach and release the slide rail from the recess in, conveniently dismantle the slide rail.

(7) The utility model discloses a direction locking post passes through set screw and the fixed linking to each other of cover half benevolence, and the slide rail passes through set screw and links to each other with movable mould benevolence is fixed, uses set screw fixed mounting direction locking post and slide rail, thereby can be through screw and screw with direction locking post and slide rail accurate positioning, guarantee the installation accuracy and the fastness fixed of direction locking post and slide rail.

Drawings

FIG. 1 is a schematic structural diagram of a plastic product.

FIG. 2 is a schematic view of a lateral core configuration.

Fig. 3 is a schematic structural diagram of a mold closing state of a conventional side core-pulling mechanism.

Fig. 4 is a schematic structural view of a mold splitting state of a conventional side core pulling mechanism.

Fig. 5 is a schematic diagram of the structure of the mold closing state of the present invention.

Fig. 6 is a schematic diagram of the mold splitting state structure of the present invention.

FIG. 7 is an isometric view of the present invention (with the cavity block and cavity block removed);

fig. 8 is a schematic structural view of a guide locking block and a guide locking column.

Fig. 9 is a schematic view of a slider structure.

FIG. 10 is a top view of the cavity insert.

Fig. 11 is an enlarged view of a portion b of fig. 10.

The die comprises a lateral die core 1, a convex splicing head 2, a fixed die core 3, a locking block 4, a sliding rail 5, a movable die core 6, a sliding block 7, a guide rod 8, a guide hole 9, a guide locking column 10, a guide locking block 11, a guide locking groove 12, a clamping groove 13, a clamping block 14, a concave splicing interface 15, a groove 16 and an arc-shaped notch 17.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. Embodiments of the present invention include, but are not limited to, the following examples.

Example 1:

referring to fig. 5 to 8, the injection mold side core pulling mechanism comprises a fixed mold core 3 and a movable mold core 6, wherein a guide locking block 11 is embedded and fixed in the lower part of the fixed mold core 3, and a guide locking column 10 is obliquely arranged on the lower surface of the guide locking block 11; a sliding rail 5 is embedded and fixed at the upper part of the movable mould core 6, a sliding block 7 capable of sliding is arranged in a sliding groove of the sliding rail 5, the sliding block 7 is provided with a guide locking groove 12 matched with the guide locking column 10, and one end of the sliding block 7 is connected with the lateral mould core 1; when the fixed die core 3 and the movable die core 6 are matched and fitted, the guide locking column 10 extends into the guide locking groove 12 and can be wedged with the guide locking groove 12 to prevent the sliding block 7 from horizontally moving.

In this embodiment, during the mold closing process, the movable mold core 6 moves upward and gradually approaches the fixed mold core 3, the guiding locking column 10 gradually extends into the guiding locking groove 12, and the guiding locking column 10 guides the sliding block 7 to drive the lateral mold core 1 to slide leftward due to the oblique arrangement of the guiding locking column 10. When the die assembly is completed, the upper surface of the movable die core 6 is attached to the lower surface of the fixed die core 3, and the lateral die core 1 slides in place to be combined with other die cores to form a forming cavity. At the moment, the guide locking column 10 extends into the guide locking groove 12 and is wedged tightly with the guide locking groove 12, so that the situation that when glue is injected into the cavity, the glue pushes the sliding block 7 to cause the sliding block 7 to move, so that the lateral mold core 1 is displaced to cause deformation of an injection molding product and influence on molding quality is avoided. After the glue injection is finished and formed through cooling, the movable mold core 6 and the fixed mold core 3 are separated, the movable mold core 6 moves downwards to be separated from the fixed mold core 3, and the guide locking column 10 can guide the sliding block 7 to drive the lateral mold core 1 to slide rightwards, so that the lateral mold core 1 is separated from a plastic product, the lateral mold core 1 is prevented from influencing an injection molding product, and the injection molding product can be safely demoulded.

The utility model discloses the latch segment 4 that has abandoned current side mechanism of loosing core contains, and direction locking post 10 has guide and locking effect concurrently, makes the side mechanism of loosing core structure simpler. In the manufacturing process, the existing side core-pulling mechanism needs to manufacture an oblique guide rod mounting hole and a guide hole 9, a guide rod 8 needs to be mounted in the guide rod mounting hole, the size precision of the guide rod 8 and the guide rod is high, and looseness caused when the guide rod 8 with too small aperture cannot be mounted or too large aperture is used is avoided. In addition, the guide rod 8 and the guide hole 9 have the same gradient, the machining process is complex, and the machining precision is difficult to ensure. And the utility model discloses a direction locking groove 12, direction locking post 10 and direction latch segment 11, processing are original to be a whole component, can directly use the one-time cutting machine shaping of wire cut electrical discharge machining bed, when guaranteeing the assembly precision, and processing technology is simple, practices thrift the cost.

Further, the guiding and locking column 10 is in the shape of a quadrangular prism. The guide locking column 10 is in an oblique quadrangular prism shape, and the contact surface between the guide locking column 10 and the guide locking groove 12 is increased, so that the guide locking column 10 can be wedged tightly with the guide locking groove 12 besides the original guide effect, and the sliding block 7 is limited.

Furthermore, the lower ends of the two inclined planes of the guiding locking column 10 are both provided with round corners, and the contact position of the bottom of the guiding locking groove 12 and the round corners of the guiding locking column 10 is also provided with matched round corners. The lower ends of the two inclined planes of the guide locking column 10 are provided with round corners, the contact positions of the bottom of the guide locking groove 12 and the round corners of the guide locking column 10 are also provided with the round corners matched with each other, and sharp edges at the lower ends of the two inclined planes of the guide locking column 10 can be removed from the round corners, so that the round corners can be stably contacted with the guide locking groove 12, and the guide locking column is favorable for guide assembly.

Furthermore, clamping grooves 13 are formed in two inner sides of the lower end of the sliding rail 5, clamping blocks 14 are arranged on two sides of the lower end of the sliding block 7, and the clamping blocks 14 are clamped in the clamping grooves 13. Clamping grooves 13 are formed in two inner sides of the lower end of the sliding rail 5, clamping blocks 14 are arranged on two sides of the lower end of the sliding block 7, and the clamping blocks 14 are clamped in the clamping grooves 13 to limit the sliding block 7 to horizontally slide in the sliding rail 5.

Furthermore, the end of the sliding block 7 is provided with a concave splicing opening 15, and the end of the lateral mold core 1 is provided with a convex splicing head 2 matched with the concave splicing opening 15. Be equipped with concave concatenation mouth 15 through the 7 ends of slider, 1 ends of side direction core are equipped with the protruding splice 2 with concave concatenation mouthful 15 adaptations, and in the protruding article joint card of side direction core 1 was gone into the concave concatenation mouth 15 of slider 7, slider 7 alright drive side direction core 1 horizontal slip, and both through this structural connection, the dismouting is swift convenient, conveniently changes side direction core 1 according to the plastic goods is different.

Furthermore, arc-shaped notches 17 are arranged at two corners of the inner side of the groove 16 for embedding the movable mould core 6 into the slide rail 5. The two corners of the inner side of the groove 16 for placing the sliding rail 5 are provided with arc notches 17 through the embedding of the movable die core 6, the sliding rail 5 can be pushed out from the groove 16 by a tool penetrating into the arc notches 17, and the sliding rail 5 is convenient to disassemble.

Further, the guide locking column 10 is fixedly connected with the fixed die core 3 through a fixing screw, and the slide rail 5 is fixedly connected with the movable die core 6 through a fixing screw. Through the direction locking post 10 through set screw with fixed mould benevolence 3 fixed linking to each other, slide rail 5 passes through set screw and fixed linking to each other with movable mould benevolence 6, uses set screw fixed mounting direction locking post 10 and slide rail 5, thereby can be through screw and screw with direction locking post 10 and slide rail 5 pinpoint, guarantee the installation accuracy and the fastness of fixing of direction locking post 10 and slide rail 5.

The embodiment of the present invention is the above. The above embodiments and the specific parameters in the embodiments are only for the purpose of clearly showing the verification process of the utility model, and are not used to limit the patent protection scope of the utility model, the patent protection scope of the utility model is still subject to the claims, all the equivalent structural changes made by using the contents of the specification and the drawings of the utility model are included in the protection scope of the utility model.

Claims

1. The utility model provides an injection mold side mechanism of loosing core, includes stationary mold benevolence (3) and movable mold benevolence (6), its characterized in that: a guide locking block (11) is embedded and fixed at the lower part of the fixed die core (3), and a guide locking column (10) is obliquely arranged on the lower surface of the guide locking block (11); a sliding rail (5) is embedded and fixed at the upper part of the movable mould core (6), a sliding block (7) capable of sliding is arranged in a sliding groove of the sliding rail (5), the sliding block (7) is provided with a guide locking groove (12) matched with the guide locking column (10), and one end of the sliding block (7) is connected with the lateral mould core (1); when the fixed die core (3) is matched and attached with the movable die core (6), the guide locking column (10) is inserted into the guide locking groove (12) and can be wedged with the guide locking groove (12) to prevent the sliding block (7) from moving horizontally.

2. An injection mold side core pulling mechanism according to claim 1, characterized in that: the guide locking column (10) is in a shape of an oblique quadrangular prism.

3. An injection mold side core pulling mechanism according to claim 2, characterized in that: the lower ends of the two inclined planes of the guide locking column (10) are provided with round corners, and the contact positions of the bottom of the guide locking groove (12) and the round corners of the guide locking column (10) are also provided with the round corners which are matched with each other.

4. An injection mold side core pulling mechanism according to claim 1, characterized in that: the two inner sides of the lower end of the sliding rail (5) are provided with clamping grooves (13), clamping blocks (14) are arranged on two sides of the lower end of the sliding block (7), and the clamping blocks (14) are clamped in the clamping grooves (13).

5. An injection mold side core pulling mechanism according to claim 1, characterized in that: the end of the sliding block (7) is provided with a concave splicing port (15), and the end of the lateral mold core (1) is provided with a convex splicing head (2) matched with the concave splicing port (15).

6. An injection mold side core pulling mechanism according to claim 1, characterized in that: arc-shaped notches (17) are arranged at two corners of the inner side of the groove (16) for placing the sliding rail (5) in the movable die core (6) in an embedded mode.

7. An injection mold side core pulling mechanism according to any one of claims 1 to 6, characterized in that: the guide locking block (11) is fixedly connected with the fixed die core (3) through a fixing screw, and the sliding rail (5) is fixedly connected with the movable die core (6) through a fixing screw.