CN219256336U - Mould - Google Patents

Abstract

The utility model relates to the technical field of injection molds and discloses a mold, which comprises a front mold and a rear mold, wherein the front mold comprises a first main body and an energy storage element, the rear mold comprises a second main body and a slide insert, the first main body, the second main body and the slide insert are used for jointly limiting and forming a cavity for product molding, the first main body, the energy storage element and the slide insert are sequentially and adjacently arranged towards the second main body, and the energy storage element is used for applying force of the first main body towards the second main body to the slide insert and compressing the slide insert at least in the initial stage of mold opening. The beneficial effects of the utility model are as follows: the first main part of front mould to and the second main part and the line position mold insert of back mould constitute the die cavity, can be used to the product shaping to set up energy storage element between first main part and line position mold insert, when back mould die sinking before, energy storage element can support the line position mold insert, thereby prevent line position mold insert perk, guarantee the outward appearance of injection moulding product, avoid the fish tail problem when opening the mould.

Description

Mould

Technical Field

The utility model relates to the field of injection molds, in particular to a mold.

Background

The mold is a tool for making a molded article. In the mold, a mechanism capable of obtaining a lateral core pulling or a lateral parting and a resetting action to drag out a product back-off, a sinking position and the like is called a slide mechanism. A secondary ejection die structure is disclosed in patent document CN217047338U, which is to mold a product by using a die. However, in the actual production process, the inventor of the present application found that the product produced by using the mold provided in the patent document CN217047338U is prone to scratch marks on the surface of the product, so that a new mold needs to be designed to solve the problem of scratch on the surface of the product.

Disclosure of Invention

The utility model aims to solve the technical problems that: how to avoid scratch on the appearance surface of the product.

In order to solve the above technical problems, the present utility model provides a mold, including:

a front mold including a first body and an energy storage element;

a rear mold comprising a second body and a row insert;

the first main body, the second main body and the line position insert are used for limiting a cavity for forming product molding together, the first main body, the energy storage element, the line position insert and the second main body are sequentially arranged along the direction that the first main body faces the second main body, and the energy storage element is used for applying force along the direction that the first main body faces the second main body to the line position insert in at least the initial stage of die opening so as to compress the line position insert during die opening.

In some embodiments of the present application, the second body has a mating face, the slide insert has a first face and a second face opposite to each other, the first body has an abutment face, the mating face, the first face, the second face, the energy storage element, the abutment face are arranged along the direction of the second body pointing to the first body in order in an abutting manner.

In some embodiments of the present application, a distance of 10mm-20mm is provided between the energy storage element and the cavity in a direction perpendicular to a direction in which the second body points to the first body and the energy storage element points to the cavity.

In some embodiments of the present application, the energy storage element comprises:

a spring;

the spring needle, the slide insert and the second body are sequentially arranged along the direction of the first body towards the second body;

the spring is used for propping against the spring needle in the initial stage of die opening, so that the spring needle compresses the slide insert.

In some embodiments of the present application, further comprising:

the limiting block is arranged on the energy storage element;

and the limiting part is positioned between the first main body and the slide insert and is used for abutting against the limiting block.

In some embodiments of the present application, the distance between the limiting portion and the limiting block is 3mm-6mm.

In some embodiments of the present application, the second body includes:

the row-position inserts and the mold cores are sequentially and alternately surrounded on the outer side of the cavity; along the direction from the line insert to the cavity, the line insert gradually contracts inwards towards two sides of the line insert, and the side surface of the line insert, which is close to the line, is matched with the side surface of the line insert, which is close to the die core.

In some embodiments of the present application, an included angle between a side edge of the row insert facing the two sides of the row insert, which forms the cavity, and a side edge of the adjacent row insert is 2 ° -5 °.

In some embodiments of the present application, the plurality of the row-level inserts together define sides of the cavity, and the row-level inserts include:

the first main body is provided with a second matching piece matched with the first matching piece, and when the first matching piece is fixed with the second matching piece in one-to-one correspondence, the slide insert can enclose and form the side wall of the cavity.

In some embodiments of the present application, a bolt through hole is formed in the slide insert, a bolt counter bore is formed in the first body, and the slide insert and the first body are fixed through bolts.

In some embodiments of the present application, further comprising: the inclined guide pillar is arranged at an angle with the direction of the rear mold pointing to the front mold and is used for providing power required by lateral drawing of the slide insert, the first matching piece is in a prismatic table shape, and an included angle between the surface of the first matching piece, which is close to the cavity, and the direction of the rear mold pointing to the front mold is larger than an inclined angle of the inclined guide pillar relative to the direction of the rear mold pointing to the front mold.

In some embodiments of the present application, the energy storage elements are plural, and the energy storage elements are disposed sequentially along the side edges of the cavity formed by the row insert.

Compared with the prior art, the die has the beneficial effects that:

the first main part of front mould to and the second main part and the line position mold insert of back mould constitute the die cavity, can be used to the product shaping to set up energy storage element between first main part and line position mold insert, when back mould die sinking before, energy storage element can support the line position mold insert, thereby prevent line position mold insert perk, guarantee the outward appearance of injection moulding product, avoid the fish tail problem when opening the mould.

Drawings

FIG. 1 is a cross-sectional view of a first embodiment of the mold of the present utility model;

FIG. 2 is a cross-sectional view of a second embodiment of the mold of the present utility model;

fig. 3 is an enlarged view of a portion a in fig. 2;

FIG. 4 is a cross-sectional view of the mold of the present utility model when opened;

FIG. 5 is a top view of the mold cavity location of the present utility model;

fig. 6 is an enlarged view of the portion B in fig. 5;

FIG. 7 is a front view of a slide insert of the present utility model;

FIG. 8 is a top view of a slide insert of the present utility model;

FIG. 9 is a perspective view of the cavity location of the present utility model;

fig. 10 is an enlarged view of a portion C in fig. 9.

In the figure, 1, front mould; 11. a first body; 111. an abutment surface; 112. a second mating member; 113. a bolt countersink; 12. an energy storage element; 121. a spring; 122. a spring needle; 13. a limiting block; 14. a limit part; 2. a rear mold; 21. a second body; 211. a mating surface; 212. a mold core; 22. a slide insert; 221. a first face; 222. a second face; 223. a first mating member; 224. a bolt through hole; 3. a cavity; 4. and (5) an inclined guide post.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc. in the present utility model are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

As shown in fig. 1 to 10, an embodiment of the present utility model provides a mold including: the front mold 1 and the rear mold 2, the front mold 1 comprises a first main body 11 and an energy storage element 12, the rear mold 2 comprises a second main body 21 and a row-position insert 22, wherein the first main body 11, the second main body 21 and the row-position insert 22 are used for jointly limiting a cavity 3 for forming product molding, the first main body 11, the energy storage element 12, the row-position insert 22 and the second main body 21 are sequentially arranged along the direction of the first main body 11 towards the second main body 21, and the energy storage element 12 is used for applying force along the direction of the first main body 11 towards the second main body 21 to the row-position insert 22 at least in the initial stage of mold opening so as to compress the row-position insert 22 during mold opening.

In the process of producing the product by using the existing die, the inventor finds that the positions of scratch marks correspond to the positions of the row positions, and further finds that the side row positions are fixed on the row position seats through bolts, the row position seats are pressed on the templates through the row position pressing plates, and the row position seats and the templates slide so that the row position seats and the templates are in clearance fit, so that the possibility of tilting of the row position insert in the die opening process is caused, and further finds that the scratch marks are caused by tilting of the row positions in the moving process. Based on this, the inventor designs the above-mentioned mould, and the first main body 11 of the front mould 1, the second main body 21 of the rear mould 2 and the row position insert 22 form the cavity 3, which can be used for product molding, and an energy storage element 12 such as a spring 121 spring needle 122 and a small energy storage cylinder is arranged between the first main body 11 and the row position insert 22, and when the front and rear moulds are opened, the energy storage element 12 can be always propped against the row position insert 22 at least in the initial stage of opening the mould, thereby preventing the row position insert 22 from tilting, ensuring the appearance of the injection molded product, and avoiding the scratch problem during opening the mould.

In some embodiments of the present application, as shown in fig. 4, the second body 21 has a mating surface 211, the row insert 22 has a first surface 221 and a second surface 222 opposite to each other, the first body 11 has an abutment surface 111, and the mating surface 211, the first surface 221, the second surface 222, the energy storage element 12, and the abutment surface 111 are sequentially abutted along a direction in which the second body 21 points to the first body 11. The mating surface 211 is a surface of the second body 21 facing the row insert 22, the first surface 221 is a surface of the row insert 22 facing the second body 21, the second surface 222 is a surface of the row insert 22 facing the first body 11, and the contact surface 111 is a surface of the first body 11 facing the row insert 22. The mating surface 211, the first surface 221, the second surface 222, the energy storage element 12 and the abutting surface 111 are sequentially abutted, and the energy storage element 12 is in an energy storage state before die opening, so that after die opening, the energy storage element 12 can be continuously abutted against the second surface 222 of the slide insert 22 until the energy storage element 12 completely releases energy, and the effect of continuously abutting against the second body 21 of the slide insert 22 in the initial stage of die opening is achieved.

Preferably, the mating surface 211 is located at the top of the second body 21, the first surface 221 and the second surface 222 of the slide insert 22 are respectively a bottom surface and a top surface of the slide insert 22, the abutting surface 111 is located at the bottom of the first body 11, the mating surface 211 abuts against the first surface 221 of the slide insert 22, and the abutting surface 111 abuts against the second surface 222 of the slide insert 22, so that continuous pressing in at least an initial stage of die opening is realized, and the first body 11, the slide insert 22 and the second body 21 can be assisted to be tightly attached by gravity in a preferable mode sequentially from top to bottom, and meanwhile, the three are prevented from being separated from each other due to lateral force, so that reliability is better.

In some embodiments of the present application, as shown in fig. 9 and 10, in a direction perpendicular to the direction in which the second body 21 points toward the first body 11 and the energy storage element 12 points toward the cavity 3, a distance of 10mm to 20mm is provided between the energy storage element 12 and the cavity 3. The distance between the energy storage element 12 and the cavity 3 can be selected from 10mm, 11mm, 12mm, 15mm, 20mm and the like, so that the energy storage element 12 can always press the row position when the row position moves in the direction away from the cavity 3 and the moving distance is not more than 10mm-20 mm. Specifically, when the distance between the energy storage element 12 and the cavity 3 is more than or equal to 10mm, the shell is not scratched after the line position moves; when the distance between the energy storage element 12 and the cavity 3 is smaller than or equal to 20mm, the energy storage element 12 can be separated by torque and the like, so that the line position has good pressure, and the end, close to the cavity 3, of the line position is ensured not to be tilted. In one example, the direction X perpendicular to the direction in which the second body 21 points toward the first body 11 and the direction in which the energy storage element 12 points toward the cavity 3 is shown in fig. 9.

In some embodiments of the present application, as shown in fig. 1-5 and 10, the energy storage element 12 includes: a spring 121 and a pin 122, wherein the first body 11, the spring 121, the pin 122, the slide insert 22 and the second body 21 are sequentially arranged along the direction of the first body 11 toward the second body 21; the spring 121 is used for pressing the spring pin 122 in an initial stage of die opening, so that the spring pin 122 presses the slide insert 22. The spring 121 is matched with the spring needle 122 to form a preferred embodiment of the energy storage element 12, the spring 121 and the spring needle 122 are convenient to obtain and low in cost, the size of the spring 121 and the spring needle 122 is small, a groove for accommodating the spring 121, the spring needle 122 and the row insert 22 can be formed on the side of the abutting face 111 of the first main body 11, the spring 121, the spring needle 122 and the row insert 22 are sequentially abutted, compression at the initial stage of die opening can be achieved, and abutting matching relation between the abutting face 111 and the second face 222 can be guaranteed. The bottom surface of first main part 11 butt is at the first end of spring 121, the second end butt at the spring needle 122 is close to the side of first main part 11 of spring needle 122, in the injection molding process, spring 121 is in the state of compressing tightly always, when the die sinking, first main part 11 and row position mold insert 22 gradually separate, spring 121 gradually changes to the natural state this moment, spring 121 exerts downward pressure to spring needle 122 always, thereby make spring needle 122 compress tightly row position mold insert 22 always before spring 121 becomes the natural state, prevent its perk, and when spring 121 is in the natural state, the product in the die cavity 3 has been pushed out a distance this moment, the distance between product and row position mold insert 22 is far enough, even row position mold insert 22 perk also can not influence the outward appearance of product this moment, thereby guaranteed the reliability of product.

In some embodiments of the present application, as shown in fig. 1-4, further comprising: the limiting block 13 is arranged on the energy storage element 12, and the limiting part 14 is positioned between the first main body 11 and the slide insert 22 and is used for abutting against the limiting block 13. The energy storage element 12 always presses the row-position insert 22 when the die is opened for a certain distance through the cooperation between the limiting block 13 and the limiting part 14, meanwhile, the cavity 3 can be formed between the first main body 11, the row-position insert 22 and the second main body 21 more easily, and the energy storage element 12 can be prevented from being separated from the first main body 11 when the die is opened.

Preferably, the bottom of the first body 11 may be provided with a receiving space for accommodating the energy storage element 12, and the limiting portion 14 is disposed in the receiving space, where the energy storage element 12 is disposed in the receiving space, so as to ensure the abutting matching relationship between the abutting surface 111 and the second surface 222.

In some embodiments of the present application, as shown in fig. 1-4, the distance between the limiting portion 14 and the limiting block 13 is 3mm-6mm. The distance H between the limiting part 14 and the limiting block 13 can be 3mm, 3.5mm, 4mm, 5mm, 6mm and the like, and the slide insert 22 can be ensured not to scratch products within a certain mold opening distance. Ensuring that the energy storage element 12 can always hold the plunger when the first body 11 is moved 3-6 mm in a direction away from the plunger 22. Specifically, when the distance H between the first body 11 and the slide insert 22 is 3mm or more, the slide insert 22 moves in the same direction again, so that the product is not scratched; when the distance H between the first body 11 and the row insert 22 is 6mm or less, the stability of the energy storage element 12 can be ensured on the basis of the holding of the row insert 22.

In some embodiments of the present application, as shown in fig. 5 and 10, the second body 21 includes: the plurality of die cores 212, the slide inserts 22 and the die cores 212 are sequentially and alternately surrounded on the outer side of the die cavity 3; along the direction from the row insert 22 to the cavity 3, the row insert 22 gradually contracts inwards towards two sides of the die core 212, and the side surface of the die core 212 close to the row is matched with the side surface of the row insert 22 close to the die core 212. The term "fit" as used herein means that the side surface of the mold 212 and the side surface of the row insert 22 can be bonded to each other, for example, when the side surface of the mold 212 is smoothly transited in one direction, the corresponding side surface of the row insert 22 is smoothly transited in the same direction, so that the two can be tightly bonded to each other. When the mold is opened, the mold insert 212 is not moved, the slide insert 22 is pulled outwards, four slide inserts 22 and the mold insert 212 are exemplified by four common four sides, the four slide inserts 22 are enclosed to form the side wall of the cavity 3, the four mold inserts 212 are sequentially arranged between two adjacent slide inserts 22 respectively, at the moment, if the edge of the slide insert 22, which is attached to the mold insert 212, is attached to the straight line, the pulling difficulty is caused, so that the slide insert 22 and the mold insert 212 need clearance fit, and the clearance fit can be caused when the mold is opened, so that the inventor can shrink the side edge of the slide insert 22, which is attached to the mold insert 212, inwards, the shrinking position is close to the side edge of the cavity 3 formed by the slide insert 22, and meanwhile, the mold insert 212 is protruded towards one side of the slide insert 22, which is attached to the side edge of the slide insert 22, so that the clearance fit with the shrink position of the slide insert 22 is matched with the slide insert 22, and the clearance fit problem caused by the clearance fit between the slide insert 22 and the slide insert 212 can be avoided.

In some embodiments of the present application, as shown in fig. 5, 6 and 10, the included angle between the side edge of the row insert 22 facing the two sides of the mold insert 212 and the side edge of the adjacent row insert 22 forming the cavity 3 is 2 ° -5 °. The included angle can be 2 degrees, 2.5 degrees, 3 degrees, 4 degrees, 5 degrees and the like, and is preferably set to be 3 degrees, so that the processing consistency is ensured while the processing is easy. The included angle between the side edge of the row insert 22 facing the two side mold cores 212 and the side edge of the adjacent row insert 22 forming the cavity 3 is alpha, and is shown in fig. 6.

In some embodiments of the present application, as shown in fig. 2-10, the plurality of the row inserts 22 together define sides of the cavity 3, and the row inserts 22 include: the first matching piece 223 is provided with a second matching piece 112 corresponding to the first main body 11, and when the first matching piece 223 and the second matching piece 112 are fixed in a one-to-one correspondence manner, the slide insert 22 can enclose and form the side wall of the cavity 3. The first matching piece 223 and the second matching piece 112 are not fixed in practical use, and their functions are mainly to match and clamp and fix in the machining process, so that the side walls of the plurality of row position inserts 22 enclose to form the complete side wall of the cavity 3, and then machining treatment is performed, otherwise, the row position inserts 22 forming the side wall of the cavity 3 need to be machined one by one, and are installed on the second main body after machining, and due to the existence of machining errors, obvious clamping lines appear between the adjacent row position inserts 22, so that the quality of the product surface is reduced. Therefore, when the product appearance requires a smooth surface, the first matching piece 223 on the row-position insert 22 and the second matching piece 112 on the first main body 11 can be matched and fixed together, and then the side walls of the row-position inserts 22 are processed together to form the side walls of the cavity 3, so that matching errors between two adjacent row-position inserts 22 during single processing are prevented, the clamping lines of adjacent row positions are saved, and the functions of positioning and back shoveling are simultaneously realized. The first matching piece 223 and the second matching piece 112 are matched, that is, the first matching piece 223 and the second matching piece 112 are suitable in shape and size, and can be clamped together, for example, the first matching piece 223 is set to be a trapezoid bump structure, the second matching piece 112 is set to be a trapezoid groove structure, and the first matching piece 223 and the second matching piece are clamped with each other, so that the slide insert 22 and the first main body 11 cannot move transversely relative to each other, the side walls of the slide inserts 22 are guaranteed not to move relatively, the side walls of the cavity are preformed, and workers can directly process according to the matching condition between the side walls of the slide inserts 22.

In some embodiments of the present application, as shown in fig. 2-5 and fig. 8-10, the slide insert 22 is provided with a bolt through hole 224, the first body 11 is provided with a bolt counter bore 113, and the slide insert 22 and the first body 11 are connected through bolts. The slide insert 22 is fixedly connected with the first main body 11 through bolts, and is convenient to install and stable in connection.

In some embodiments of the present application, as shown in fig. 1-4, further comprising: the inclined guide post 4 is arranged at an angle to the direction of the rear mold 2 pointing to the front mold 1, and is used for providing power required by lateral drawing of the slide insert 22, the first matching piece 223 is in a prismatic table shape, and an included angle between the surface of the first matching piece 223, which is close to the cavity 3, and the direction of the rear mold 2 pointing to the front mold 1 is larger than an inclined angle of the inclined guide post 4 relative to the vertical direction. The inclined guide pillar 4 can provide the power required by the lateral drawing of the slide insert 22 and plays a role in guiding, the prismatic table-shaped first matching piece 223 can better play a role in positioning, and the structure that the angle of the prismatic table close to one side of the cavity 3 is larger than the inclination angle of the inclined guide pillar 4 can avoid the interference of the first matching piece 223 during die opening, so that the die opening is more convenient and smooth. The angle between the surface of the first mating piece 223, which is close to the cavity 3, and the direction of the rear mold 2, which is directed to the front mold 1, is beta, and the inclination angle of the oblique guide post 4 relative to the vertical direction is gamma, which is shown in fig. 7, and is shown in fig. 1.

In some embodiments of the present application, as shown in fig. 9 and 10, there are a plurality of energy storage elements 12, and the energy storage elements 12 are sequentially disposed along the side edges of the row insert 22 where the cavity 3 is formed. Because the row-position insert 22 has a certain length, a plurality of energy storage elements 12 can be arranged along the length direction of the row-position insert 22, so that one side of the row-position insert 22 along the length direction is prevented from tilting.

In summary, the embodiment of the utility model provides a mold, in which a first main body 11 of a front mold 1 of the mold, a second main body 21 of a rear mold 2 and a slide insert 22 form a cavity 3, which can be used for product molding, and energy storage elements 12 such as spring 121 spring pins 122, small energy storage cylinders and the like are arranged between the first main body 11 and the slide insert 22, and when the front mold and the rear mold are opened, the energy storage elements 12 can always press the slide insert 22 within a certain range, so that the slide insert 22 is prevented from tilting, the appearance of an injection molding product is ensured, and the scratch problem during the mold opening is avoided.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims (11)

1. A mold, comprising:

a front mould (1), the front mould (1) comprising a first body (11) and an energy storage element (12);

a rear mold (2), the rear mold (2) comprising a second body (21) and a row-position insert (22);

the first main body (11), the second main body (21) and the line insert (22) are used for jointly limiting a cavity (3) for forming product molding, the first main body (11), the energy storage element (12), the line insert (22) and the second main body (21) are sequentially arranged along the direction of the first main body (11) towards the second main body (21), and the energy storage element (12) is used for applying force along the direction of the first main body (11) towards the second main body (21) to the line insert (22) at least in the initial stage of die opening so as to compress the line insert (22) during die opening.

2. The mold according to claim 1, characterized in that the second body (21) has a mating surface (211), the slide insert (22) has a first surface (221) and a second surface (222) opposite to each other, the first body (11) has an abutment surface (111), and the mating surface (211), the first surface (221), the second surface (222), the energy storage element (12), and the abutment surface (111) are arranged in order in abutment along a direction in which the second body (21) points to the first body (11).

3. A mould according to claim 1, characterized in that the energy storage element (12) is spaced from the mould cavity (3) by a distance of 10-20 mm in a direction perpendicular to the direction in which the second body is directed towards the first body and in which the energy storage element is directed towards the mould cavity (3).

4. The mould according to claim 1, characterized in that the energy storage element (12) comprises:

a spring (121);

the spring needle (122), the first main body (11), the spring (121), the spring needle (122), the slide insert (22) and the second main body (21) are sequentially arranged along the direction of the first main body (11) towards the second main body (21);

the spring (121) is used for propping against the spring needle (122) in the initial stage of die opening, so that the spring needle (122) compresses the row-position insert (22).

5. The mold of claim 1, further comprising:

the limiting block (13) is arranged on the energy storage element (12);

and a limiting part (14) which is positioned between the first main body (11) and the slide insert (22) and is used for abutting against the limiting block (13).

6. A mould according to claim 5, characterized in that the distance between the limit stop (14) and the limit stop (13) is 3-6 mm.

7. A mould according to any one of claims 1 to 6, wherein the second body (21) comprises:

the row-position inserts (22) and the mold cores (212) are sequentially and alternately arranged on the outer side of the cavity (3); along the direction from the line insert (22) to the cavity (3), the line insert (22) gradually contracts inwards towards two sides of the die core (212), and the side surface of the die core (212) close to the line is matched with the side surface of the line insert (22) close to the die core.

8. The mold according to claim 7, characterized in that the angle between the side of the row insert (22) facing the mold insert (212) on both sides thereof and the side of the adjacent row insert (22) forming the cavity (3) is 2 ° -5 °.

9. The mold according to any one of claims 1 to 6, characterized in that there are a plurality of said row inserts (22), a plurality of said row inserts (22) together defining sides of said cavity (3), and in that said row inserts (22) comprise:

the first main body (11) is provided with a second matching piece (112) matched with the first matching piece (223), and when the first matching piece (223) and the second matching piece (112) are fixed in a one-to-one correspondence manner, the slide insert (22) can enclose and form the side wall of the cavity (3).

10. The die of claim 9, wherein the slide insert (22) is provided with a bolt through hole (224), the first body (11) is provided with a bolt counter bore (113), and the slide insert (22) and the first body (11) are fixed by bolts;

the mold further comprises: oblique guide pillar (4), oblique guide pillar (4) with the direction of back mould (2) orientation front mould (1) is the angle and arranges for provide the required power of slide mold insert (22) side direction pull, first cooperation piece (223) are the prismatic table form, just first cooperation piece (223) is close to the face of die cavity (3) with the contained angle between the direction of back mould (2) orientation front mould (1) is greater than oblique guide pillar (4) for the inclination of back mould (2) orientation front mould (1) direction.

11. The mold according to claim 1, characterized in that the energy storage elements (12) are plural and that the energy storage elements (12) are arranged in sequence along the side edges of the row insert (22) forming the cavity (3).

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