CN216506442U

CN216506442U - Mould suitable for inserts injection moulding product

Info

Publication number: CN216506442U
Application number: CN202122909447.9U
Authority: CN
Inventors: 代晓聪
Original assignee: Lingwei Vision Intelligent Technology Ningbo Co ltd
Current assignee: Lingwei Vision Intelligent Technology Ningbo Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-05-13
Anticipated expiration: 2031-11-24

Abstract

The utility model provides a mould suitable for inserts injection moulding product, includes movable mould, cover half and positioning mechanism, be formed with first bellying on the movable mould, be formed with first depressed part on the cover half, the die cavity of product is formed in first bellying with between the first depressed part, positioning mechanism includes the slider, the slider can for first depressed part motion set up in on the cover half, at the die sinking state, the slider stretches into first depressed part place is regional in order to fix a position the inserts, at the compound die state, the slider withdraws from first depressed part place is regional. The die can enable the insert to be stably positioned in the cavity of the die, and is simple in structure and high in yield.

Description

Mould suitable for inserts injection moulding product

Technical Field

The utility model relates to the technical field of molds, in particular to a mold suitable for an insert injection molding product.

Background

The insert injection molding is to place the insert into a mold according to design requirements, the mold is closed to complete injection molding, and an injection molding product with the insert is produced after molding.

The outer insert product is an insert product with an insert on the outer surface of the product and an injection molding base on the inner side of the product. When an outer insert product is injection molded, the insert needs to be fixed in a cavity of a fixed die of an injection mold in advance and attached to the cavity surface of the mold. In the existing structure, a common positioning manner is to pre-form a positioning hole on an insert, and design a positioning pin on an injection mold corresponding to the position of the insert hole for positioning. In the actual production process, the problem that the inserts are not placed in place by production staff or the inserts are crushed when the molds are closed due to insert deformation frequently occurs, so that the product scrapping is too high.

Therefore, for the positioning of the conventional external insert, the conventional structure has the problems of low utilization rate of raw materials, complicated production procedures, low working efficiency, high rejection rate and the like.

SUMMERY OF THE UTILITY MODEL

The utility model provides a mold suitable for an insert injection molding product, which can enable an insert to be stably positioned in a cavity of the mold, and has the advantages of simple structure and high yield.

The utility model provides a mold suitable for an insert injection molding product, which comprises a movable mold, a fixed mold and a positioning mechanism, wherein a first protruding part is formed on the movable mold, a first concave part is formed on the fixed mold, a cavity of the product is formed between the first protruding part and the first concave part, the positioning mechanism comprises a sliding block, the sliding block is movably arranged on the fixed mold relative to the first concave part, the sliding block extends into an area where the first concave part is located to position an insert in an open mold state, and the sliding block exits the area where the first concave part is located in a closed mold state.

Furthermore, the positioning mechanism further comprises an elastic piece, one end of the elastic piece is connected with the fixed die, the other end of the elastic piece is connected with the sliding block, a first driving surface is formed on the movable die, a first driven surface corresponding to the first driving surface is formed on the fixed die, in the die assembly process, the first driving surface presses the first driven surface to drive the sliding block to exit from the area where the first concave part is located, the elastic piece deforms, and when the elastic piece releases the deformation energy, the sliding block extends into the area where the first concave part is located.

Furthermore, the positioning mechanism comprises a fixing plate, an accommodating groove is formed in one end, away from the first concave part, of the sliding block, the fixing plate is fixed on the side face of the movable mold, one end of the elastic piece is connected with the fixing plate, and the other end of the elastic piece extends into the accommodating groove and is connected with the sliding block.

Further, a second convex portion is formed on the movable die, a second concave portion is formed on the slider, the first actuating surface is formed on an outer side wall of the second convex portion, and the first driven surface is formed on an inner side wall of the second concave portion.

Further, the first driving surface and the first driven surface are both arc-shaped surfaces.

Further, in the mold opening state, a projection of the first driving surface in the direction of the fixed mold at least partially coincides with the first driven surface.

Further, from the direction away from the movable mold to the direction close to the movable mold, the end surface of the slider facing one end of the first recess portion gradually inclines in the direction away from the first recess portion.

Furthermore, the included angle between the end face of the slide block, which faces one end of the first concave part, and the vertical direction is larger than the draft angle of the cavity.

Further, after the die is closed, a clearance is reserved between the end part of one end, facing the first concave part, of the slide block and the first convex part of the movable die.

Further, a pressing block is arranged on the fixed die and fixed on the fixed die, a sliding groove is formed between the pressing block and the fixed die, a sliding rail is formed on the side face of the sliding block, and the sliding rail extends into the sliding groove so that the sliding block moves on the fixed die.

In conclusion, the positioning mechanism is arranged, so that the fixed die can extend into the area where the first concave part of the fixed die is located in the die opening state, and the insert is positioned after being placed; in a die assembly state, the slide block can exit from the area of the first sunken part, so that the movable die and the fixed die are assembled conveniently. Through foretell setting, can make the inserts comparatively firmly be positioned in the die cavity of mould, simple structure, the yield is higher.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram of a movable mold of a mold suitable for an insert injection molded product according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a fixed mold of a mold suitable for an insert injection molding product according to an embodiment of the present invention.

Fig. 3 is a schematic sectional view of a mold suitable for an insert injection molded product in a mold-opened state.

Fig. 4 is a schematic diagram showing the positional relationship between the slide and the cavity at a in fig. 3.

Fig. 5 is a schematic view showing a positional relationship between the positioning mechanism and peripheral components in the mold-open state.

Fig. 6 is a schematic view showing a positional relationship between the positioning mechanism and peripheral components in a mold clamping state.

FIG. 7 is a schematic diagram showing the relationship between the inclined surface and the draft angle of the slider.

Fig. 8 is a schematic view showing a positional relationship between the slide and the movable mold in the mold clamping state.

Fig. 9 is a schematic view showing a positional relationship between the second convex portion and the cavity.

Fig. 10 is a schematic axial side view of the positioning mechanism.

Fig. 11 is a schematic view showing a cross-sectional structure in the width direction of the mold.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the utility model, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1 to 3, a mold for an insert injection molding product according to an embodiment of the present invention includes a movable mold 10, a fixed mold 20, and a positioning mechanism 30, wherein a cavity of the product is formed between the movable mold 10 and the fixed mold 20. Specifically, a first protrusion 11 is formed on the movable mold 10, a first recess 21 is formed on the fixed mold 20, and in the mold clamping state, the first protrusion 11 of the movable mold 10 extends into the first recess 21 of the fixed mold 20 to form a cavity of the product. When injection molding is performed, the insert 41 (see fig. 5 and 6) is placed at the bottom of the first recess 21, and after the injection molding is completed, the plastic base 42 (see fig. 5 and 6) is formed at the upper portion of the insert 41 and is integrated with the insert 41.

The positioning mechanism 30 is disposed on the fixed mold 20, the positioning mechanism 30 includes a slider 31, the slider 31 is movably disposed on the fixed mold 20 relative to the first recess 21, in the mold opening state, the slider 31 extends into the area where the first recess 21 is located to position the insert 41, and in the mold closing state, the slider 31 exits the area where the first recess 21 is located, so that the movable mold 10 and the fixed mold 20 are closed.

In the embodiment, the positioning mechanism 30 is arranged to extend into the area of the first concave part 21 of the fixed mold 20 in the mold opening state, so that the insert 41 can be positioned after the insert 41 is placed; in the mold clamping state, the slide 31 is withdrawn from the area of the first recess 21, so that the movable mold 10 and the fixed mold 20 are clamped. Through the arrangement, the insert 41 can be stably positioned in the cavity of the mold, the structure is simple, and the yield is high.

Further, the positioning mechanism 30 further includes an elastic member 32, such as a spring, one end of the elastic member 32 is connected to the fixed mold 20, the other end is connected to the slider 31, the first driving surface 12 is formed on the movable mold 10, and the first driven surface 33 corresponding to the first driving surface 12 is formed on the slider 31.

As shown in fig. 5 and 6, during the mold closing process, that is, when the movable mold 10 covers the fixed mold 20, the first driving surface 12 presses the first driven surface 33 to move, so that the slider 31 gradually exits from the area of the first recess 21, and the elastic member 32 is deformed, and when the elastic member 32 releases the deformation energy, the elastic member 32 causes the slider 31 to extend into the area of the first recess 21.

The positioning mechanism 30 further includes a fixing plate 34, wherein an accommodating groove 311 is formed at an end of the slider 31 away from the first recess 21, the fixing plate 34 is fixed to a side surface of the fixed mold 20 by a fixing member such as a bolt, and one end of the elastic member 32 is connected to the fixing plate 34, and the other end thereof extends into the accommodating groove 311 and is connected to the slider 31.

More specifically, the second projecting portion 13 is formed on the movable mold 10, the second recessed portion 312 is formed on the slider 31, the first driving surface 12 is formed on the outer side wall of the second projecting portion 13, and the first driven surface 33 is formed on the inner side wall of the second recessed portion 312. In this embodiment, the first driving surface 12 and the first driven surface 33 are both arc-shaped surfaces. It will be appreciated that in other embodiments, the first and second drive faces 12, 12 may be inclined.

As shown in fig. 3 and 6, in the mold-open state, a projection of the first driving surface 12 in the direction of the fixed mold 20 at least partially overlaps the first driven surface 33, so that the first driving surface 12 can contact the first driven surface 33 when the mold is closed. In the present embodiment, in the mold-open state, the depth (D1 in fig. 4) of the area where the slider 31 extends into the first recess 21 does not exceed the thickness of the insert 41. That is, in the horizontal direction, the overlapping distance between the projection of the first driving surface 12 in the direction of the fixed mold 20 and the first driven surface 33 does not exceed the thickness of the insert 41. Preferably, a first clearance distance (e.g., D2 in fig. 4) is left between an end of the slider 31 facing the first recess 21 and a surface of the insert 41 on a side away from the first recess 21, that is, a depth of a region where the slider 31 extends into the first recess 21 (e.g., D1 in fig. 4) is smaller than a thickness of the insert 41, so as to prevent the slider 31 from scratching the first protrusion 11 of the movable mold 10 during mold clamping.

Referring to fig. 3 and 4, in the present embodiment, when viewed from the side, the end surface of the slider 31 facing one end of the first recess 21 gradually inclines in a direction away from the first recess 21 from the direction away from the movable mold 10 to the direction close to the movable mold 10 (i.e. from the bottom to the top). In other words, the slider 31 is approximately wedge-shaped as viewed from the side. The inclined end surface of the slider 31 can prevent interference with the first boss 11 of the movable mold 10 during mold clamping while ensuring that the slider 31 limits the insert 41.

As shown in fig. 7, the included angle (α in fig. 7) between the end surface of the slider 31 facing one end of the first recess 21 and the vertical direction is preferably larger than the draft angle (β in fig. 7) of the cavity.

As shown in fig. 8, in the present embodiment, after mold clamping, a second clearance distance (see D3 in fig. 8) is left between the end of the slide 31 facing the first concave portion 21 and the first convex portion 11 of the movable mold 10 to prevent the slide 31 from scratching the first convex portion 11 of the movable mold 10 when the mold is opened.

Further, after the mold clamping, clearance is left between the end surface of the slider 31 facing the first recess 21 and the upper side surface of the slider 31 and the movable mold 10, so as to prevent the slider 31 from interfering with the movable mold 10.

In this embodiment, in order to ensure the moment when the first protruding portion 11 is disengaged from the first recessed portion 21, the first driving surface 12 still presses the first driven surface 33, so that the slider 31 does not impact the first protruding portion 11. As shown in FIG. 9, when the bottom surface and the side surface of the insert 41 are both straight lines when viewed from the side and are smoothly transited through arcs, the length of the effective mating surface of the second protrusion 13 and the second recess 312 (shown as D4 in FIG. 9) should be greater than the length of the straight line of the side surface of the insert 41 (shown as D5 in FIG. 9)

Further, as shown in fig. 10 to 11, pressing blocks 22 are disposed on both sides of the sliding block 31, the pressing blocks 22 are fixed on the fixed mold 20, a sliding slot (not shown) is formed between the pressing blocks 22 and the fixed mold 20, sliding rails 313 are formed on both sides of the sliding block 31, and the sliding rails 313 extend into the sliding slot to ensure smooth movement of the sliding block 31.

In summary, the positioning mechanism 30 is arranged to extend into the area where the first recess 21 of the fixed mold 20 is located in the mold-opening state, so that the insert 41 can be positioned after the insert 41 is placed; in the mold clamping state, the slide 31 is withdrawn from the area of the first recess 21, so that the movable mold 10 and the fixed mold 20 are clamped. Through the arrangement, the insert 41 can be stably positioned in the cavity of the mold, the structure is simple, and the yield is high.

Although the present invention has been described with reference to the above embodiments, it should be understood that the present invention is not limited to the above embodiments, but rather, may be embodied in many different forms and modifications without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a mould suitable for inserts injection moulding product which characterized in that: including movable mould, cover half and positioning mechanism, be formed with first bellying on the movable mould, be formed with first depressed part on the cover half, the die cavity of product is formed in first bellying with between the first depressed part, positioning mechanism includes the slider, the slider can for first depressed part motion set up in on the cover half, at the die sinking state, the slider stretches into first depressed part place is regional in order to fix a position the inserts, and at the compound die state, the slider withdraws from first depressed part place is regional.

2. The mold for an insert injection molded product according to claim 1, wherein: the positioning mechanism further comprises an elastic piece, one end of the elastic piece is connected with the fixed die, the other end of the elastic piece is connected with the sliding block, a first driving surface is formed on the movable die, a first driven surface corresponding to the first driving surface is formed on the fixed die, in the die assembling process, the first driving surface presses the first driven surface to drive the sliding block to withdraw from the area where the first concave part is located and enable the elastic piece to deform, and when the elastic piece releases deformation energy, the elastic piece enables the sliding block to extend into the area where the first concave part is located.

3. The mold for an insert injection molded product according to claim 2, wherein: the positioning mechanism comprises a fixing plate, an accommodating groove is formed in one end, far away from the first concave part, of the sliding block, the fixing plate is fixed on the side face of the movable mold, one end of the elastic piece is connected with the fixing plate, and the other end of the elastic piece extends into the accommodating groove and is connected with the sliding block.

4. The mold adapted for an insert injection molded product of claim 2, wherein: the movable die is provided with a second convex part, the slide block is provided with a second concave part, the first driving surface is formed on the outer side wall of the second convex part, and the first driven surface is formed on the inner side wall of the second concave part.

5. The mold for an insert injection molded product according to claim 4, wherein: the first driving surface and the first driven surface are both arc-shaped surfaces.

6. The mold for an insert injection molded product according to claim 4, wherein: in the mold opening state, the projection of the first driving surface to the fixed mold direction at least partially coincides with the first driven surface.

7. The mold for an insert injection molded product according to claim 2, wherein: from the direction far away from the movable die to the direction close to the movable die, the end face of the slide block towards one end of the first sunken part is gradually inclined towards the direction far away from the first sunken part.

8. The mold for an insert injection molded product according to claim 7, wherein: the included angle between the end face of the sliding block, which faces one end of the first concave part, and the vertical direction is larger than the draft angle of the cavity.

9. The mold adapted for an insert injection molded product of claim 7, wherein: after the die is closed, a clearance is reserved between the end part of one end, facing the first concave part, of the slide block and the first convex part of the movable die.

10. The mold for an insert injection molded product according to claim 2, wherein: the fixed die is provided with a pressing block, the pressing block is fixed on the fixed die, a sliding groove is formed between the pressing block and the fixed die, a sliding rail is formed on the side face of the sliding block, and the sliding rail extends into the sliding groove so that the sliding block moves on the fixed die.