CN219686385U - Positioning insert and die - Google Patents

Abstract

The utility model discloses a positioning insert, which comprises an upper insert and a lower insert, wherein the upper insert and the lower insert are clamped to form at least part of an injection molding cavity, one end of the upper insert, which is opposite to the lower insert, is provided with a limiting module, the limiting module is provided with an upper guide inclined plane, and the lower insert is provided with a lower guide inclined plane which is matched with the upper guide inclined plane; the base bears the lower insert and is rotationally connected with the lower insert; when the upper insert and the lower insert move in opposite directions, the lower insert can rotate around the base, so that the upper guide inclined plane and the lower guide inclined plane relatively slide and are matched, and the upper insert and the lower insert are meshed with each other. The utility model can enable the upper insert and the lower insert to be matched with each other through the upper guide inclined plane and the lower guide inclined plane, so that the upper insert and the lower insert are meshed with each other, burrs generated by the existence of a gap between the upper insert and the lower insert in the injection molding process of a product are reduced, and the molding yield of the injection molded product is improved. The utility model also provides a die comprising the positioning insert.

Description

Positioning insert and die

Technical Field

The utility model relates to the technical field of mold processing and injection molding, in particular to a positioning insert and a mold.

Background

Inserts in a mold are understood to be part of the mold body, the inserts serving to form differently shaped injection cavities, and generally may consist of an upper insert and a lower insert. In the forming die with O type injection molding cavity in the existing market, because the mold insert is influenced by processing and assembly precision, the upper insert and the lower insert can be misplaced in the matching process in the horizontal direction, so that the product after injection molding can not meet the use requirement, an additional repair procedure is needed, the cost of the injection molding product is increased, and the yield of the injection molding product is reduced. And the die clamping surfaces of the upper insert and the lower insert are worn after long-term use, so that gaps are formed between the die clamping surfaces of the upper insert and the lower insert, and further, the injection molded product has larger burrs, and the defective rate of the injection molded product is increased. In addition, due to the processing error of the inserts, gaps can be generated on the die clamping surfaces of the upper insert and the lower insert, so that the injection molded product has larger burrs, and the defective rate of the injection molded product is increased.

Disclosure of Invention

The utility model aims to solve the problem that burrs of an injection molded product in an injection molding cavity are too large in the injection molding process of the product. The utility model provides a positioning insert, which can enable an upper insert and a lower insert to be matched with each other through an upper guide inclined plane and a lower guide inclined plane, so that the upper insert and the lower insert are meshed with each other, burrs generated by the existence of a gap between the upper insert and the lower insert in the injection molding process of a product are reduced, and the molding yield of the injection molded product is improved.

In order to solve the technical problems, the embodiment of the utility model discloses a positioning insert, which comprises an upper insert and a lower insert, wherein the upper insert and the lower insert are clamped to form at least part of an injection molding cavity, one end of the upper insert, which is opposite to the lower insert, is provided with a limiting module, the limiting module is provided with an upper guide inclined plane, and the lower insert is provided with a lower guide inclined plane which is matched with the upper guide inclined plane; the base bears the lower insert and is rotationally connected with the lower insert; when the upper insert and the lower insert move in opposite directions, the lower insert can rotate around the base, so that the upper guide inclined plane and the lower guide inclined plane relatively slide and are matched, and the upper insert and the lower insert are meshed with each other.

By adopting the technical scheme, the upper insert and the lower insert are matched with each other through the upper guide inclined plane and the lower guide inclined plane, so that burrs generated due to the existence of a gap between the upper insert and the lower insert in the injection molding process of a product are reduced, and the molding yield of the injection molded product is improved.

According to another specific embodiment of the utility model, the embodiment of the utility model discloses a positioning insert, and a limiting module comprises a first limiting groove and a second limiting groove which are arranged on two sides of an upper insert along the die assembly direction, wherein the first limiting groove is formed with a first upper guide inclined surface, and the second limiting groove is formed with a second upper guide inclined surface.

According to another embodiment of the present utility model, a positioning insert is disclosed, wherein the lower insert is provided with a first boss corresponding to the first limiting groove, and the lower insert is provided with a second boss corresponding to the second limiting groove, the first boss is formed with a first lower guiding inclined surface adapted to the first upper guiding inclined surface, and the second boss is formed with a second lower guiding inclined surface adapted to the second upper guiding inclined surface. According to another embodiment of the utility model, the utility model discloses a positioning insert, the base is opposite to the lower insert along the die assembly direction, the base is provided with a rotating shaft, the lower insert can rotate relative to the rotating shaft, so that the first upper guide inclined plane and the first lower guide inclined plane relatively slide and adapt, and the second upper guide inclined plane and the second lower guide inclined plane relatively slide and adapt, so that the upper insert and the lower insert are meshed with each other.

According to another embodiment of the utility model, the second limiting groove is provided with an upper end face, and a rotation allowance is reserved between the upper end face and the top end of the second boss so as to facilitate rotation of the lower insert relative to the rotating shaft.

According to another embodiment of the present utility model, an embodiment of the present utility model discloses a positioning insert, wherein a rotating shaft is integrally or detachably provided with a base.

According to another embodiment of the utility model, the embodiment of the utility model discloses a positioning insert, wherein a gap is arranged between the bottom end surface of the lower insert and the top end surface of the base.

According to another embodiment of the present utility model, a positioning insert is disclosed, wherein the positioning insert further includes a first concave-convex structure disposed on the upper insert, and a second concave-convex structure disposed on the lower insert, the first concave-convex structure is disposed opposite to the second concave-convex structure, and the upper insert and the lower insert are further fastened and fixed by the first concave-convex structure and the second concave-convex structure.

By adopting the technical scheme, due to the design of the first concave-convex structure and the second concave-convex structure, dislocation in the horizontal direction can not be generated after the upper insert and the lower insert are assembled, and the molding yield of injection molding products is further improved.

According to another embodiment of the utility model, the embodiment of the utility model discloses a positioning insert, wherein at least part of an injection molding cavity formed by clamping an upper insert and a lower insert is O-shaped.

The embodiment of the utility model also discloses a die, which comprises any positioning insert.

By adopting the technical scheme, burrs generated by the existence of a gap between the upper insert and the lower insert in the injection molding process of the product are reduced, so that the molding yield of the injection molded product is improved; and the upper insert and the lower insert can not generate dislocation in the horizontal direction after die assembly, so that the molding yield of injection products is further improved.

Drawings

FIG. 1 shows a schematic view of a mold in the present utility model;

FIG. 2 shows a schematic view of a positioning insert of the present utility model;

FIG. 3 shows a schematic view of the present utility model with unfinished upper and lower inserts;

FIG. 4 shows an enlarged schematic view at A in FIG. 2;

a die 00, an upper die 10, a lower die 20;

positioning the insert 0;

the upper insert 1, the limit module 11, the first limit groove 111, the second limit groove 113, the upper guide inclined plane 1100, the first upper guide inclined plane 1111, the second upper guide inclined plane 1131, the upper end surface 1132, the first concave-convex structure 115 and the first step 13;

lower insert 2, first boss 21, second boss 23, lower guide slope 200, first lower guide slope 211, second lower guide slope 231, second concave-convex structure 25, second step 27;

a base 3, a rotating shaft 31.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present utility model with specific examples. While the description of the utility model will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the utility model described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the utility model. The following description contains many specific details for the purpose of providing a thorough understanding of the present utility model. The utility model may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the utility model. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present embodiment, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present utility model.

The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present embodiment can be understood in a specific case by those of ordinary skill in the art.

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1-3, the utility model discloses a positioning insert 0, which comprises an upper insert 1 and a lower insert 2, wherein the upper insert 1 and the lower insert 2 are clamped to form at least part of an injection molding cavity (not shown in the figure), one end of the upper insert 1 opposite to the lower insert 2 is provided with a limiting module 11, the limiting module 11 is provided with an upper guide inclined plane 1100, and the lower insert 2 is provided with a lower guide inclined plane 200 matched with the upper guide inclined plane 1100; the positioning insert 0 further comprises a base 3, and the base 3 supports the lower insert 2 and is rotationally connected with the lower insert 2; when the upper insert 1 and the lower insert 2 move in opposite directions, the lower insert 2 can rotate around the base 3, so that the upper guide inclined plane 1100 and the lower guide inclined plane 200 slide relatively and are matched, the upper insert 1 and the lower insert 2 are mutually meshed, the upper insert 1 and the lower insert 2 are mutually matched through the upper guide inclined plane 1100 and the lower guide inclined plane 200, the upper insert 1 and the lower insert 2 are mutually meshed, burrs generated due to the existence of a gap between the upper insert 1 and the lower insert 2 in the injection molding process of a product are reduced, and the molding yield of the injection molded product is improved.

Specifically, with continued reference to fig. 3, the limit module 11 includes a first limit groove 111 and a second limit groove 113 provided on both sides of the upper insert 1 in the mold closing direction (a direction shown in fig. 3). The upper insert 1 may have a first limit groove 111 on the left side in the mold clamping direction, and the upper insert 1 may have a second limit groove 113 on the right side in the mold clamping direction. The left and right positions of the first and second stopper grooves 111, 113 with respect to the mold clamping direction are not particularly limited, and the right side of the upper insert 1 in the mold clamping direction may have the first stopper groove 111, and the left side of the upper insert 1 in the mold clamping direction may have the second stopper groove 113. The first limiting groove 111 has a first upper guide slope 1111, and the second limiting groove 113 has a second upper guide slope 1131.

The lower insert 2 is formed with a first boss 21, the first boss 21 having a first lower guide slope 211, the first lower guide slope 211 being adapted to the first upper guide slope 1111. Similarly, the lower insert 2 is formed with a second boss 23, the second boss 23 having a second lower guide slope 231, the second lower guide slope 231 being adapted to the second upper guide slope 1131.

The base 3 is provided opposite to the lower insert 2 in the mold closing direction (direction a shown in fig. 3), and the base 3 is provided with a rotation shaft 31. So that the lower insert 2 can rotate relative to the rotation shaft 31 to relatively slide and fit the first upper guide inclined surface 1111 and the first lower guide inclined surface 211 and relatively slide and fit the second upper guide inclined surface 1131 and the second lower guide inclined surface 231, so that the upper insert 1 and the lower insert 2 are engaged with each other.

In the prior art, because the upper insert 1 and/or the lower insert 2 are subject to processing and assembly precision, gaps are often generated between the upper insert 1 and the lower insert 2 in the process of matching the upper insert 1 and the lower insert 2, and burrs are generated on injection molded products.

Due to machining errors of the upper insert 1 and/or the lower insert 2, the following two conditions may occur during the process of clamping the upper insert 1 and the lower insert 2, with continued reference to fig. 1-3.

In the first case, the upper insert 1 moves toward the lower insert 2, and when the first lower guide slope 211 of the first boss 21 contacts and slides relatively with the first upper guide slope 1111 of the first limit groove 111, the second lower guide slope 231 of the second boss 23 does not contact with the second upper guide slope 1131 of the first limit groove 111, in other words, the lower insert 2 is not in a horizontal state due to a machining error during the assembly positioning process, so that the left side of the lower insert 2 with respect to the mold clamping direction (a direction shown in fig. 3) is higher than the right side with respect to the mold clamping direction.

At this time, when the first lower guiding inclined surface 211 of the first boss 21 is in contact with the first upper guiding inclined surface 1131 of the first limiting groove 111 and slides relatively, but the second lower guiding inclined surface 231 of the second boss 23 is not in contact with the second upper guiding inclined surface 1131 of the second limiting groove 113, that is, the first boss 21 will abut against the first limiting groove 111, and the upper insert 1 cannot move relative to the lower insert 2, a gap is generated between the upper insert 1 and the lower insert 2. In this embodiment, however, due to the existence of the rotating shaft 31 of the base 3, and the pressure is applied to the lower insert 2 during the movement of the upper insert 1 toward the lower insert 2 during the mold closing process, the lower insert 2 may rotate around the base 3, specifically in a counterclockwise direction about the rotating shaft 31 until the first upper guiding inclined surface 1111 and the first lower guiding inclined surface 211 are completely contacted, and at the same time, the second upper guiding inclined surface 1131 and the second lower guiding inclined surface 231 are completely contacted, or at the same time, the lower insert 2 is in a horizontal state so that the first boss 21 can be completely fitted into the first limiting groove 111, the second boss 23 can be completely fitted into the second limiting groove 113, and finally the upper insert 1 and the lower insert 2 are engaged, so as to form at least a part of the injection molding cavity.

In the second case, the upper insert 1 moves toward the lower insert 2, and when the second lower guide inclined surface 231 of the second boss 23 contacts and slides relatively with the second upper guide inclined surface 1131 of the second limiting groove 113, the first lower guide inclined surface 211 of the first boss 21 does not contact with the first upper guide inclined surface 1111 of the first limiting groove 111, in other words, the lower insert 2 is not in a horizontal state due to an error during the assembly positioning process, so that the right side of the lower insert 2 with respect to the clamping direction (a direction shown in fig. 3) is higher than the left side with respect to the clamping direction.

At this time, when the second lower guiding inclined surface 231 of the second boss 23 is in contact with the second upper guiding inclined surface 1131 of the second limiting groove 113 and slides relatively, the first lower guiding inclined surface 211 of the first boss 21 is not in contact with the first upper guiding inclined surface 1111 of the first limiting groove 111, that is, the second boss 23 will abut against the second limiting groove 113, and the upper insert 1 cannot move relative to the lower insert 2, a gap is generated between the upper insert 1 and the lower insert 2. In this embodiment, due to the existence of the rotating shaft 31 of the base 3, and the pressure is applied to the lower insert 2 during the movement of the upper insert 1 towards the lower insert 2 during the mold closing process, the lower insert 2 can rotate around the base 3, specifically in a clockwise direction around the rotating shaft 31 until the second upper guiding inclined plane 1131 and the second lower guiding inclined plane 231 are completely contacted, and at the same time, the first upper guiding inclined plane 1111 and the first lower guiding inclined plane 211 are completely contacted, or at the same time, the lower insert 2 is in a horizontal state so that the first boss 21 can be completely matched with the first limiting groove 111, the second boss 23 can be completely matched with the second limiting groove 113, and finally, the upper insert 1 and the lower insert 2 are meshed to form at least part of an injection molding cavity.

According to the embodiment, the upper insert 1 and the lower insert 2 can be matched through the upper guide inclined plane 1100 and the lower guide inclined plane 200, so that the upper insert 1 and the lower insert 2 are meshed with each other, gaps between the upper insert 1 and the lower insert 2 in the injection molding process of a product are reduced, burrs caused by the gaps are further reduced, and the molding yield of the injection molded product is improved.

In other possible embodiments, referring to fig. 2-4, the second limiting groove 113 has an upper end surface 1132, and the upper end surface 1132 and the top end of the second boss 23 leave a rotational margin (G shown in fig. 4) that is reserved for the upper insert 1 and the lower insert 2 to rotate away from each other, or avoid contact interference caused by an excessive relative error angle of the upper insert 1 and the lower insert 2.

In other possible embodiments, referring to fig. 3, the rotation shaft 31 is integrally designed with the base 3, the rotation shaft 31 is a semi-cylinder (not shown in the drawings) disposed at the top end of the base 3, the lower insert 2 is provided with a groove (not shown in the drawings) for accommodating the semi-cylinder, the lower insert 2 is adapted to the base 3, and the lower insert 2 can rotate relative to the base 3 or the rotation shaft 31 of the base 3.

The specific design of the rotation shaft 31 is not limited here, as long as the lower insert 2 can rotate around the base 3 due to the presence of the rotation shaft 31. In other possible embodiments, the shaft 31 is detachably designed with the base 3, wherein a part of the shaft 31 is embedded in the base 3, and another part protrudes from the base 3, and the lower insert 2 is also provided with a groove (not shown in the figure) to accommodate the shaft 31 protruding from the base 3, so that the lower insert 2 is adapted to the base 3, and the lower insert 2 can rotate relative to the base 3 or the shaft 31 of the base 3.

In other possible embodiments, referring to fig. 3, a gap (not shown) is provided between a bottom end surface (not shown) of the lower insert 2 and a top end surface (not shown) of the base 3, so that the lower insert 2 can rotate relative to the rotating shaft 31, so that the lower insert 2 does not interfere with the base 3, and the lower insert 2 cannot rotate relative to the rotating shaft 31.

In other possible embodiments, referring to fig. 1 and 3, the top end of the upper insert 1 is provided with a first step 13 extending, the first step 13 abutting against the upper die 10 to fix the upper insert 1 in the upper die 10, and the bottom end of the lower insert 2 is also provided with a second step 27 extending, the second step 27 abutting against the lower die 20 to fix the lower insert 2 in the lower die 20.

In other possible embodiments, referring to fig. 3, the positioning insert 0 further includes a first concave-convex structure 115 disposed on the upper insert 1, the positioning insert 0 further includes a second concave-convex structure 25 disposed on the lower insert 2, and the first concave-convex structure 115 is disposed opposite to the second concave-convex structure 25, so that the upper insert 1 and the lower insert 2 are further fastened by the first concave-convex structure 115 and the second concave-convex structure 25.

Specifically, in the present embodiment, the first concave-convex structure 115 is provided on the left side of the upper insert 1 with respect to the mold closing direction (direction a shown in fig. 3), the second concave-convex structure 25 is provided on the left side of the lower insert 2 with respect to the mold closing direction, the first concave-convex structure 115 is provided on the right side of the upper insert 1 with respect to the mold closing direction, the second concave-convex structure 25 is provided on the right side of the lower insert 2 with respect to the mold closing direction, the first concave-convex structure 115 and the second concave-convex structure 25 on the left side of the upper insert 1 and the lower insert 2 are further engaged and fixed by the first concave-convex structure 115 and the second concave-convex structure 25 on the right side of the mold closing direction, and the mutual engagement of the upper insert 1 and the lower insert 2 is further realized.

The number of the first concave-convex structures 115 and the second concave-convex structures 25 is not limited, and the concave-convex directions of the first concave-convex structures 115 and the second concave-convex structures 25 are not limited, as long as the first concave-convex structures 115 and the corresponding second concave-convex structures 25 can be engaged and fixed with each other.

The first concave-convex structure 115 and the second concave-convex structure 25 enable the upper insert 1 and the lower insert 2 not to generate dislocation in the horizontal direction (H direction shown in fig. 3) after die assembly, further enable the upper insert 1 and the lower insert 2 to be meshed with each other, and further improve the yield of injection molding products.

In a possible embodiment, at least part of the injection cavity formed by the clamping of the upper insert 1 and the lower insert 2 is O-shaped.

The utility model also discloses a die 00, which comprises the positioning insert 0, so that the upper insert 1 and the lower insert 2 in the die 00 are matched through the upper guide inclined plane 1100 and the lower guide inclined plane 200, burrs generated by the existence of gaps between the upper insert 1 and the lower insert 2 in the injection molding process of products are reduced, the molding yield of injection molding products is improved, and due to the arrangement of the first concave-convex structure 115 and the second concave-convex structure 25, dislocation in the horizontal direction cannot be generated between the upper insert 1 and the lower insert 2 after the die is closed, and the upper insert 1 and the lower insert 2 are further meshed with each other, so that the molding yield of the injection molding products is further improved.

While the utility model has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the utility model with reference to specific embodiments, and it is not intended to limit the practice of the utility model to those descriptions. Various changes in form and detail may be made therein by those skilled in the art, including a few simple inferences or alternatives, without departing from the spirit and scope of the present utility model.

Claims (10)

1. The positioning insert comprises an upper insert and a lower insert, wherein the upper insert and the lower insert are clamped to form at least part of an injection molding cavity,

a limiting module is formed at one end of the upper insert opposite to the lower insert, the limiting module is provided with an upper guide inclined plane, and the lower insert is provided with a lower guide inclined plane matched with the upper guide inclined plane;

the base supports the lower insert and is rotationally connected with the lower insert;

when the upper insert and the lower insert move in opposite directions, the lower insert can rotate around the base, so that the upper guide inclined plane and the lower guide inclined plane relatively slide and are matched, and the upper insert and the lower insert are meshed with each other.

2. The positioning insert according to claim 1, wherein the limit module includes a first limit groove and a second limit groove disposed on both sides of the upper insert in the mold clamping direction, the first limit groove being formed with a first upper guide slope, and the second limit groove being formed with a second upper guide slope.

3. The positioning insert according to claim 2, wherein the lower insert is provided with a first boss corresponding to the first limit groove, and the lower insert is provided with a second boss corresponding to the second limit groove, the first boss being formed with a first lower guide slope adapted to the first upper guide slope, the second boss being formed with a second lower guide slope adapted to the second upper guide slope.

4. The positioning insert of claim 3 wherein said base is disposed opposite said lower insert in said clamping direction, said base having a spindle, said lower insert being rotatable relative to said spindle to slide and adapt said first upper guide ramp relative to said first lower guide ramp and slide and adapt said second upper guide ramp relative to said second lower guide ramp to intermesh said upper insert with said lower insert.

5. The positioning insert of claim 4 wherein said second limiting groove has an upper end surface, said upper end surface and a top end of said second boss providing a rotational margin for facilitating rotation of said lower insert relative to said rotational axis.

6. The positioning insert of claim 4, wherein the shaft is integral with or removably disposed with the base.

7. The positioning insert of claim 4, wherein a bottom end face of the lower insert is spaced from a top end face of the base.

8. The positioning insert of claim 1, further comprising a first relief structure disposed on the upper insert and a second relief structure disposed on the lower insert, the first relief structure disposed opposite the second relief structure, and the upper insert and the lower insert further secured by the first relief structure and the second relief structure.

9. The positioning insert of claim 1, wherein at least a portion of the injection cavity formed by the clamping of the upper insert and the lower insert is O-shaped.

10. A mould comprising a positioning insert according to any one of claims 1 to 9.