CN221067042U - Injection mold - Google Patents

Abstract

The utility model relates to the technical field of injection molds and discloses an injection mold which comprises a fixed mold base, a fixed mold body, a movable mold body, a mold core and a cavity; the fixed die body is arranged on the fixed die seat and is provided with a first fixed surface; the movable die body is provided with a second fixed surface which is opposite to the first fixed surface; the second fixed surface is provided with a die closing position which is abutted with the first fixed surface and a die opening position which is separated from the first fixed surface; the mold cores are arranged on the first molded surface at intervals, and at least part of the mold cores are protruded out of the first molded surface; the plurality of mold cavities are distributed on the second fixed surface at intervals, and the plurality of mold cores are arranged in one-to-one correspondence with the plurality of mold cavities; when the second shaping surface is at the die closing position, at least part of the mold core is positioned in the cavity, and the injection molding piece is molded between the cavity and the mold core.

Description

Injection mold

Technical Field

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

Background

In order to enhance the stability of the cooking apparatus, it is generally necessary to provide an injection molded foot at the bottom. Conventional foot injection molding tools typically employ a sliding ejector. Two sliding blocks are usually arranged in the die holder, a plurality of die cavities are enclosed between the two sliding blocks, and the furnace legs are molded in the die cavities in an injection mode. When the mold is ejected, the two sliding blocks move outwards relative to the accommodating cavity of the mold in a direction parallel to the accommodating cavity. Because the sliding blocks occupy a certain space on the die holder, and the die cavity is formed by encircling the two sliding blocks, the die cavity can only be arranged between the opposite edges of the two sliding blocks, so that the number of the die cavities is small, the number of furnace feet for demolding each time is limited, and the production efficiency is low.

Disclosure of utility model

In view of the above, the utility model provides an injection mold to solve the problems of small number of cavities and low production efficiency.

The utility model provides an injection mold, which comprises a fixed mold base, a fixed mold body, a movable mold body, a mold core and a cavity; the fixed die body is arranged on the fixed die holder and is provided with a first fixed surface; the movable die body is provided with a second fixed surface which is opposite to the first fixed surface; the second fixed surface is provided with a die closing position abutting against the first fixed surface and a die opening position separated from the first fixed surface; the mold cores are arranged on the first molded surface at intervals, and at least part of the mold cores are protruded out of the first molded surface; the plurality of mold cavities are distributed on the second fixed surface at intervals, and the plurality of mold cores are arranged in one-to-one correspondence with the plurality of mold cavities; when the second shaping surface is positioned at the die closing position, at least part of the core is positioned in the die cavity, and the injection molding part is formed between the die cavity and the core.

The beneficial effects are that: the movable die body itself can not occupy the space on the fixed die holder, and the die cavity sets up on the second die surface alone to can distribute each position at the second die surface, including the middle part and the edge of second die surface all can set up the die cavity, the core then corresponds each position that sets up at first die surface, so, can improve the quantity of die cavity greatly, increase the play mould quantity of injection molding, improved production efficiency. The cavity is recessed in a direction away from the first fixed molded surface, the moving direction of the movable mold is vertical to the first fixed molded surface, the second fixed molded surface can be driven by the movable mold body to approach the first fixed molded surface and reach a mold closing position when being abutted against the first fixed molded surface, and at the moment, the shape of an injection molding part to be molded is enclosed between the cavity arranged on the second fixed molded surface and the mold core arranged on the first fixed molded surface; and when the second fixed molded surface is separated from the first fixed molded surface and reaches the mold opening position, the injection molding piece molded on the mold core is convenient to be demolded.

In an alternative embodiment, the fixed mold body is provided with a through hole, the mold core comprises a mold core body and a shaping part, the mold core body is arranged in the through hole, the shaping part is connected to one end of the mold core body, and the mold core body protrudes out of the first shaping surface; the injection molding piece is formed between the shaping part and the cavity.

The beneficial effects are that: the through hole can fix the core body, and the position of the shaping part can be positioned and limited through the core body.

In an alternative embodiment, the through hole comprises a first hole section and a second hole section which are arranged in a step shape, the cross section area of the first hole section is larger than that of the second hole section, and the first hole section is arranged at one end far away from the movable mould body; the periphery that the core body is kept away from the one end of design portion is equipped with spacing convex part, spacing convex part spacing setting is in first hole section department.

The beneficial effects are that: the limiting convex part is arranged at the first hole section in a limiting manner, the core can be limited and fixed in the length direction of the core, and the shaping part is controlled to protrude out of the position of the first shaping surface according to the requirement.

In an alternative embodiment, the fixed die holder is provided with a holding cavity, the fixed die body is fixedly connected in the holding cavity, and the limiting protrusion is arranged between the holding cavity and the first hole section.

The beneficial effects are that: the holding cavity is matched with the first hole section, the novel die core can be limited and fixed in the length direction of the die core, and the die core is prevented from retreating relative to the first fixed surface.

In an alternative embodiment, the injection mold further comprises an injection nozzle fixedly connected to the movable mold body and communicated with the cavity.

The beneficial effects are that: the injection nozzle is internally provided with an injection molding agent, and the injection molding agent can be injected between the cavity and the core to form injection molding pieces such as furnace legs and the like after solidification. The injection nozzle is fixedly connected to the movable die body, and can move synchronously with the movable die body to prevent the injection nozzle from being damaged and the connecting channel of the injection nozzle.

In an optional implementation manner, a groove is formed in one side, facing away from the second fixed surface, of the movable mold body, an injection molding opening communicated with the cavity is formed in the wall of the groove, and the injection molding nozzle is communicated with the injection molding opening.

The beneficial effects are that: the injection molding opening is arranged on the groove, and the injection molding agent overflowed from the injection molding opening can flow into the groove and cannot flow to the second fixed surface, so that the second fixed surface and the first fixed surface are ensured to be in direct contact and smooth fit.

In an alternative embodiment, the mold core assembly further comprises a demolding assembly, wherein the demolding assembly is arranged on the fixed mold body and is suitable for demolding the injection molding part molded on the mold core.

In an alternative embodiment, the core is provided with a first through hole; the demolding assembly comprises a power structure and a plurality of pushing rods; the push rods are connected with the power output end of the power structure, the push rods are arranged in one-to-one correspondence with the first through holes, and the push rods are arranged in the first through holes in a sliding manner and are suitable for pushing the injection molding piece to be demolded.

The beneficial effects are that: the first through hole can guide and limit the action of the push rod, and the push rod can reciprocate under the drive of the power structure so as to realize the demolding of the injection molding piece. When the second shaping surface is at the die opening position, the push rod can pass through the first through hole on the core to eject the injection molding piece outwards, and the ejected injection molding piece can drop under the action of gravity to be separated from the die.

In an optional implementation manner, the fixed die holder is further provided with a plurality of second through holes, the first through holes are communicated with the second through holes, the plurality of second through holes are respectively arranged in one-to-one correspondence with the plurality of first through holes, and the push rod sequentially slides through the second through holes and the first through holes.

The beneficial effects are that: the second through hole can guide and limit the action of the push rod, and the push rod can be driven by the power structure to pass through the first through hole and the second through hole in a reciprocating manner. When the second shaping surface is positioned at the die opening position, the push rod can sequentially pass through the second through hole and the first through hole to eject the injection molding piece outwards, and the ejected injection molding piece can drop under the action of gravity so as to be separated from the die.

In an alternative embodiment, the demolding assembly further comprises a pushing plate, the pushing plate is movably arranged on one side, opposite to the fixed mold base, of the fixed mold body, the pushing plate is connected with the power output end of the power structure, and the pushing rods are connected with the pushing plate.

The beneficial effects are that: the push plate is arranged, so that power transmission between the power structure and the push rods can be realized, and the movement of the push rods can be controlled simultaneously through one power structure. And the push plate can also enhance the movement stability of the push rod.

In an alternative embodiment, the movable mold body and the fixed mold body are both rectangular plate-like structures.

The beneficial effects are that: the movable die body and the fixed die body are rectangular plate-shaped structures, are simple in structure and easy to mold, and can be provided with more cores and cavities.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a partial schematic view of an injection mold (stationary mold assembly) according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a portion of an injection mold (movable mold assembly) according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of an injection mold (closing) according to an embodiment of the present utility model;

FIG. 4 is an enlarged partial schematic view of FIG. 3A;

FIG. 5 is a partial cross-sectional view of an injection mold (closing) according to an embodiment of the present utility model;

FIG. 6 is a partial cross-sectional view of an injection mold (open mold) according to an embodiment of the present utility model;

FIG. 7 is an enlarged partial schematic view of B in FIG. 6;

FIG. 8 is a schematic view of a first view angle of a stationary mold body and a movable mold body according to an embodiment of the present utility model;

FIG. 9 is a schematic view of a second view angle of the stationary mold body and the movable mold body according to the embodiment of the present utility model;

FIG. 10 is a schematic view of a first view of a mandrel according to an embodiment of the present utility model;

FIG. 11 is a schematic view of a second view of a mandrel according to an embodiment of the present utility model;

fig. 12 is a schematic view of an injection mold in the related art.

Reference numerals illustrate:

1. A fixed die holder; 2. a fixed mold body; 21. a first profile; 22. a first bore section; 3. a movable die body; 31. a second molding surface; 32. a groove; 33. an injection molding port; 4. a core; 41. a core body; 42. a shaping part; 43. a limit protrusion; 44. a first through hole; 5. a cavity; 6. an injection nozzle; 71. a push rod; 72. a push plate; 100. an injection molding; 1', a die holder; 2', a sliding block; 3', a cavity.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 12, in the injection mold of the related art, two sliders 2' are generally disposed on a mold base 1', a plurality of cavities 3' are enclosed between the two sliders 2', and the mold base is injection molded in the cavities 3 '. During demolding, the two slides 2' are simultaneously moved outwards relative to the receiving cavity of the mold. Because the sliding blocks 2 'occupy a certain space on the die holder 1', and the die cavity 3 'is formed by encircling the two sliding blocks 2', the die cavity can only be arranged between the opposite edges of the two sliding blocks 2', so that the number of the die cavities 3' is small, the number of furnace feet for demolding each time is limited, and the production efficiency is low.

An embodiment of the present utility model is described below with reference to fig. 1 to 11.

According to an embodiment of the present utility model, there is provided an injection mold including a stationary mold base 1, a stationary mold body 2, a movable mold body 3, a core 4, and a cavity 5; the fixed die body 2 is arranged on the fixed die holder 1 and is provided with a first fixed surface 21; the movable die body 3 is provided with a second fixed surface 31 which is arranged opposite to the first fixed surface 21; the second molding surface 31 has a mold closing position abutting against the first molding surface 21 and a mold opening position separated from the first molding surface 21; the cores 4 are arranged on the first molding surface 21 at intervals, and at least part of the cores 4 are arranged protruding out of the first molding surface 21; the plurality of mold cavities 5 are distributed on the second fixed surface 31 at intervals, and the plurality of mold cores 4 are arranged in one-to-one correspondence with the plurality of mold cavities 5; wherein, when the second fixed surface 31 is at the mold closing position, at least part of the core 4 is positioned in the cavity 5, and the injection molding piece 100 is molded between the cavity 5 and the core 4.

The movable die body 3 does not occupy the space on the fixed die holder 1, and the die cavities 5 are independently arranged on the second fixed die holder 31 and can be distributed at each position of the second fixed die holder 31, the die cavities 5 can be arranged at the middle part and the edge of the second fixed die holder 31, and the die cores 4 are correspondingly arranged at each position of the first fixed die holder 21, so that the number of the die cavities 5 can be greatly increased, the die stripping number of the injection molding piece 100 is increased, and the production efficiency is improved. The cavity 5 is recessed in a direction away from the first fixed molded surface 21, the moving direction of the movable mold is perpendicular to the first fixed molded surface 21, the second fixed molded surface 31 can be driven by the movable mold body 3 to approach the first fixed molded surface 21 and reach a mold closing position when being abutted against the first fixed molded surface 21, and at the moment, the shape of an injection molding part 100 to be molded is enclosed between the cavity 5 arranged on the second fixed molded surface 31 and the mold core 4 arranged on the first fixed molded surface 21; when the second molding surface 31 is separated from the first molding surface 21 and reaches the mold opening position, the injection molding member 100 molded on the core 4 is easily released from the mold.

Specifically, the injection mold further comprises a movable mold base, and the movable mold body 3 is fixedly connected to the movable mold base. The fixed die holder 1 is provided with a positioning hole, the movable die holder is correspondingly provided with a positioning column, and the positioning column is arranged in the positioning hole in a sliding manner in the processes of opening and closing the die. The injection molding 100 may be a support leg of a cooking apparatus, preferably a stove leg of an oven or microwave oven or the like. The fixed die assembly is formed by the structures of the fixed die base 1, the fixed die body 2 and the like; the movable die base and the movable die body 3 form a movable die assembly.

In one embodiment, the fixed mold body 2 is provided with a through hole, the mold core 4 comprises a mold core body 41 and a shaping part 42, the mold core body 41 is arranged in the through hole, the shaping part 42 is connected to one end of the mold core body 41, and the mold core body 41 protrudes out of the first shaping surface 21; the injection molding 100 is molded between the molding portion 42 and the cavity 5.

The through holes can fix the core body 41, and the position of the shaping part 42 can be positioned and limited through the core body 41.

In one embodiment, the through hole comprises a first hole section 22 and a second hole section which are arranged in a step shape, the cross section area of the first hole section 22 is larger than that of the second hole section, and the first hole section 22 is arranged at one end far away from the movable die body 3; the periphery of the core body 41, which is far away from one end of the shaping part 42, is provided with a limiting convex part 43, and the limiting convex part 43 is arranged at the first hole section 22 in a limiting way.

The limiting protrusion 43 is disposed at the first hole section 22 in a limiting manner, and can limit and fix the core 4 in the length direction of the core 4, so that the shaping portion 42 is controlled to protrude from the first shaping surface 21 as required.

In one embodiment, the fixed die holder 1 is provided with a receiving cavity, the fixed die body 2 is fixedly connected in the receiving cavity, and the limit protrusion 43 is arranged between the receiving cavity and the first hole section 22.

The accommodating cavity is matched with the first hole section 22, and can limit and fix the novel mold core 4 in the length direction, so that the mold core 4 is prevented from retreating relative to the first fixed surface 21.

In one embodiment, the injection mold further comprises an injection nozzle 6, and the injection nozzle 6 is fixedly connected to the movable mold body 3 and is communicated with the cavity 5.

The injection nozzle 6 is filled with an injection molding agent, and the molten injection molding agent can be injected between the cavity 5 and the core 4, so that the injection molding agent can be solidified to form the injection molding member 100 such as a furnace foot. The injection nozzle 6 is fixedly connected to the movable die body 3, and can move synchronously with the movable die body 3, so that the injection nozzle 6 and a connecting channel thereof are prevented from being damaged.

In one embodiment, a groove 32 is formed on one side of the movable mold body 3, which faces away from the second fixed mold surface 31, an injection port 33 communicated with the cavity 5 is formed on a wall of the groove 32, and the injection nozzle 6 is communicated with the injection port 33.

The injection molding opening 33 is arranged on the groove 32, and the injection molding agent overflowed from the injection molding opening 33 can flow into the groove 32 and cannot flow to the second fixed molded surface 31, so that the second fixed molded surface 31 and the first fixed molded surface 21 are ensured to be in direct contact and smooth fit.

In one embodiment, the mold release assembly is provided on the stationary mold body 2 and is adapted to release the molded injection molding member 100 from the core 4.

In one embodiment, the core 4 is provided with a first through hole 44; the stripper assembly includes a power structure and a plurality of pushrods 71; the plurality of push rods 71 are connected with the power output end of the power structure, the plurality of push rods 71 are arranged in one-to-one correspondence with the plurality of first through holes 44, and the push rods 71 are slidably arranged in the first through holes 44 and are suitable for pushing the injection molding piece 100 to be demolded.

The first through hole 44 can guide and limit the motion of the push rod 71, and the push rod 71 can reciprocate under the driving of the power structure, so as to realize the demolding of the injection molding piece 100. When the second molding surface 31 is at the mold opening position, the push rod 71 can push the injection molding piece 100 outwards through the first through hole 44 on the core 4, and the pushed injection molding piece 100 can drop under the action of gravity to be separated from the mold.

As an alternative embodiment, the first through hole 44 may be provided in the fixed mold body 2, the plurality of cores 4 may be provided on the outer periphery of the first through hole 44, and the single push rod 71 may be slidably provided in the first through hole 44, so that the injection mold 100 on the plurality of cores 4 may be simultaneously released.

In one embodiment, the fixed mold base 1 is further provided with a plurality of second through holes, the first through holes 44 are communicated with the second through holes, the plurality of second through holes are respectively arranged in one-to-one correspondence with the plurality of first through holes 44, and the push rod 71 sequentially slides through the second through holes and the first through holes 44.

The second through hole can guide and limit the motion of the push rod 71, and the push rod 71 can be driven by the power structure to pass through the first through hole 44 and the second through hole in a reciprocating manner. When the second molding surface 31 is at the mold opening position, the push rod 71 can sequentially pass through the second through hole and the first through hole 44 to eject the injection molding piece 100 outwards, and the ejected injection molding piece 100 can drop under the action of gravity to be separated from the mold.

In one embodiment, the demolding assembly further comprises a pushing plate 72, the pushing plate 72 is movably arranged on one side, facing away from the fixed mold body 2, of the fixed mold base 1, the pushing plate 72 is connected with a power output end of the power structure, and a plurality of pushing rods 71 are connected with the pushing plate 72.

The push plate 72 is arranged to realize power transmission between the power structure and the plurality of push rods 71, and the movement of the plurality of push rods 71 is controlled simultaneously by one power structure. And the push plate 72 can also enhance the movement stability of the push rod 71.

In one embodiment, the movable mold body 3 and the fixed mold body 2 are each rectangular plate-like structures.

The movable mold body 3 and the fixed mold body 2 are rectangular plate-shaped structures, are simple in structure and easy to mold, and can be provided with more cores 4 and cavities 5.

The injection molding process of the injection mold of the embodiment includes: and (5) die assembly, injection molding, die opening and die stripping. In the mold closing process, the second molding surface 31 moves towards the first molding surface 21 under the drive of the movable mold body 3 and reaches the mold closing position after being abutted with the first molding surface 21; the injection nozzle 6 injects injection molding agent between the cavity 5 and the core 4; after injection molding, the second shaping surface 31 is separated from the first shaping surface 21 to reach a mold opening position; at this time, the power structure ejects the injection molding piece 100 on the core 4 through the push plate 72 and the push rod 71, and the injection molding piece 100 is separated from the mold under the action of gravity; the power structure drives the push plate 72 and the push rod 71 to reset after demolding.

Although embodiments of the present utility model have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope of the utility model as defined by the appended claims.

Claims (10)

1. An injection mold, comprising:

A fixed die holder (1);

The fixed die body (2) is arranged on the fixed die holder (1) and is provided with a first fixed molded surface (21);

A movable die body (3) having a second fixed surface (31) which is provided opposite to the first fixed surface (21); the second fixed surface (31) has a mold closing position abutting against the first fixed surface (21) and a mold opening position separated from the first fixed surface (21);

The mold cores (4) are distributed on the first fixed molded surface (21) at intervals, and at least part of the mold cores (4) are protruded out of the first fixed molded surface (21);

The mold cavities (5) are arranged on the second fixed molded surface (31) at intervals, and the mold cores (4) are arranged in one-to-one correspondence with the mold cavities (5);

When the second fixed surface (31) is at the die closing position, at least part of the core (4) is positioned in the die cavity (5), and an injection molding piece (100) is molded between the die cavity (5) and the core (4).

2. The injection mold according to claim 1, wherein a through hole is provided in the stationary mold body (2), the core (4) comprises a core body (41) and a shaping portion (42), the core body (41) is provided in the through hole, the shaping portion (42) is connected to one end of the core body (41), and the core body (41) protrudes from the first shaping surface (21); an injection molding part (100) is molded between the molding part (42) and the cavity (5).

3. The injection mold according to claim 2, characterized in that the through hole comprises a first hole section (22) and a second hole section arranged in a step shape, the cross-sectional area of the first hole section (22) is larger than the cross-sectional area of the second hole section, and the first hole section (22) is arranged at one end far away from the movable mold body (3);

The periphery of one end of the core body (41) far away from the shaping part (42) is provided with a limiting convex part (43), and the limiting convex part (43) is limited and arranged at the first hole section (22).

4. An injection mould according to claim 3, characterized in that the fixed mould holder (1) is provided with a receiving cavity, the fixed mould body (2) is fixedly connected in the receiving cavity, and the limit protrusion (43) is arranged between the receiving cavity and the first hole section (22).

5. Injection mold according to any one of claims 1 to 4, characterized in that it further comprises an injection nozzle (6), said injection nozzle (6) being fixedly connected to said movable mold body (3) and communicating with said cavity (5).

6. Injection mold according to claim 5, characterized in that a groove (32) is arranged on one side of the movable mold body (3) facing away from the second fixed mold surface (31), an injection port (33) communicated with the cavity (5) is arranged on the groove wall of the groove (32), and the injection nozzle (6) is communicated with the injection port (33).

7. The injection mold according to any one of claims 1 to 4 or 6, further comprising a stripper assembly provided on the stationary mold body (2) adapted to strip the injection molded part (100) after the molding of the core (4).

8. Injection mold according to claim 7, characterized in that the core (4) is provided with a first through hole (44); the stripper assembly includes:

A power structure;

the pushing rods (71) are connected with the power output end of the power structure, the pushing rods (71) and the first through holes (44) are arranged in a one-to-one correspondence mode, and the pushing rods (71) are slidably arranged in the first through holes (44) and are suitable for pushing the injection molding piece (100) to be demolded.

9. The injection mold according to claim 8, wherein the fixed mold base (1) is further provided with a plurality of second through holes, the first through holes (44) are communicated with the second through holes, the plurality of second through holes are respectively arranged in one-to-one correspondence with the plurality of first through holes (44), and the push rod (71) sequentially slides through the second through holes and the first through holes (44);

And/or, the demolding assembly further comprises a pushing plate (72), the pushing plate (72) is movably arranged on one side, opposite to the fixed die body (2), of the fixed die base (1), the pushing plate (72) is connected with the power output end of the power structure, and a plurality of pushing rods (71) are connected with the pushing plate (72).

10. Injection mold according to any one of claims 1 to 4 or 6 or 8 to 9, characterized in that the movable mold body (3) and the stationary mold body (2) are each of rectangular plate-like structure.