CN220297704U - Silica gel product forming die easy to demould - Google Patents

Abstract

The utility model belongs to the technical field of silica gel molds, and particularly relates to a silica gel product forming mold easy to demould. The upper die is connected to the top surface of the lower die in a sliding manner, and comprises a concave die core; a connecting cavity is arranged in the lower die, a convex die core is arranged at the top of the connecting cavity, and the connecting cavity comprises a first through hole extending to the top surface of the convex die core and a second through hole extending to the top surface of the lower die; the connecting cavity is internally and elastically connected with a top piece, and the top piece comprises a first thimble penetrating through the first through hole and a second thimble penetrating through the second through hole; when the upper die is matched and abutted against the second ejector pin, the top surface of the first ejector pin is driven to be lowered to be flush with the top surface of the convex die core; when the upper die is opened and is not abutted against the second ejector pin, the top end of the first ejector pin is elastically ejected out of the first through hole, and the injection molding piece is driven to be separated from the male die core. The die has simple structure, less force transfer between elements in the demolding process, reduced energy loss, improved production efficiency and synergy for users.

Description

Silica gel product forming die easy to demould

Technical Field

The utility model belongs to the technical field of silica gel molds, and particularly relates to a silica gel product forming mold easy to demould.

Background

In daily life and production, the silica gel material is often used for manufacturing tools such as industrial accessories, kitchen ware articles, electronic accessories and the like, and when people manufacture silica gel products, a mould pressing mode is generally adopted, namely, silica gel raw materials are injected into a specific mould, the raw materials are solidified and molded under the action of high temperature, and then the silica gel products which are common in the market are obtained through series of finish machining after demoulding. At present, in the injection molding process of silica gel products, the condition that operators need to manually demould still exists, so that the working efficiency is reduced. Therefore, the prior art has an automatic demolding silica gel mold, and the number of manual intervention times of a user can be reduced.

For example, chinese patent No. CN217373229U discloses a molding die for processing a silica gel shell of a sound device, which comprises an upper die and a lower die, wherein a first synchronous wheel, a second synchronous wheel, a first bevel gear, a second bevel gear, a first synchronous belt and a second synchronous belt are arranged in the lower die. After the silica gel product is molded, the first synchronizing wheel is rotated to drive the second bevel gear and the first bevel gear to rotate, so that the first synchronizing wheel, the first synchronizing belt, the second synchronizing wheel and the second synchronizing belt drive a screw rod to synchronously rotate. The screw rod is connected with a top plate, the top plate is fixedly connected with a thimble and a liftout plate, and the rotation of the screw rod drives the top plate to move upwards or downwards so as to enable the thimble and the liftout plate to move, and therefore the formed material is ejected out.

But in the demoulding process, the material ejection plate can eject the material only by the linkage rotation of a plurality of synchronous elements, the force transmission path is long, the energy consumption is increased, the die structure is complex, and the damage possibility of the elements is improved.

Disclosure of Invention

The utility model aims to provide a silica gel product forming die easy to demould, and aims to solve the technical problems of complex die structure, large quantity of transmission elements, increased energy loss and reduced working efficiency in the silica gel product forming die in the prior art.

In order to achieve the above purpose, the embodiment of the utility model provides a silica gel product forming mold easy to demould, which comprises an upper mold and a lower mold; the upper die comprises a concave die core; the upper die is connected to the top surface of the lower die in a sliding way, a connecting cavity is arranged in the lower die, a convex die core is arranged at the top of the connecting cavity, and the connecting cavity comprises a first through hole extending to the top surface of the convex die core and a second through hole extending to the top surface of the lower die; the connecting cavity is internally and elastically connected with a top piece, and the top piece comprises a first thimble penetrating through the first through hole and a second thimble penetrating through the second through hole; when the upper die is assembled and abutted against the second ejector pin, the top surface of the first ejector pin is driven to descend to be flush with the top surface of the male die core, and at the moment, the inner wall of the female die core, the outer wall of the male die core and the top surface of the first ejector pin are jointly enclosed to form a die cavity; when the upper die is opened and is not abutted against the second thimble, the top end of the first thimble is elastically propped out of the first through hole; the top surface of the upper die is provided with a material injection hole communicated with the die cavity.

Optionally, the upper die comprises a first upper die and a second upper die; the first upper die and the second upper die are connected to the top surface of the lower die in a sliding manner; the inner side wall of the first upper die and the inner side wall of the second upper die are both provided with a concave die core.

Optionally, the bottom surface of the first upper die and the bottom surface of the second upper die are both provided with a sliding piece, the top surface of the lower die is provided with two sliding grooves, and the two sliding pieces are correspondingly and slidingly connected with the two sliding grooves respectively.

Optionally, two ends of the chute extend to left and right sides of the lower die respectively, so that the first upper die and the second upper die can be detached from the lower die.

Optionally, a limiting block is convexly arranged on the top surface of the lower die, and a limiting position is arranged on one surface of the first upper die and one surface of the second upper die, which are close to each other; when the mold is closed, the two limiting positions are respectively abutted against the two sides of the limiting block.

Optionally, a connecting rod is arranged on the outer side wall of the first upper die, and a locking piece is arranged at one end of the connecting rod; the outer side wall of the second upper die is convexly provided with a locking groove, and the locking piece is adaptively inserted into the locking groove, so that the first upper die is clung to the second upper die.

Optionally, the connecting rod is rotatably connected to the first upper die through a rotating shaft.

Optionally, the top surface of the second thimble is an inclined surface, and the side higher than the inclined surface is close to the convex mold core.

Optionally, the bottom of the first thimble is connected with the bottom of the second thimble through a connecting seat; the first thimble, the second thimble and the connecting seat are of an integrated structure.

Optionally, the bottom surface of the top piece is spring-connected to the bottom surface of the connection chamber.

Compared with the prior art, the technical scheme or schemes in the easy-to-demould silica gel product forming die provided by the embodiment of the utility model at least have one of the following technical effects:

1. when the mold is closed, the upper mold is abutted against the second ejector pin, the second ejector pin drives the top surface of the first ejector pin to be lowered to be flush with the top surface of the male mold core, at the moment, the inner wall of the female mold core, the outer wall of the male mold core and the top surface of the first ejector pin are jointly enclosed to form a mold cavity, the top surface of the upper mold is provided with a material injection hole communicated with the mold cavity, and raw materials are injected into the material injection hole to perform injection molding; when the die is opened, the upper die is released from abutting the second ejector pin, the top end of the first ejector pin is driven to elastically eject out of the first through hole, and meanwhile, the injection molding piece is driven to be separated from the male die core, so that the die is simple in structure and convenient to demolding.

2. In the processes of die assembly and die opening, the second thimble is stressed to descend or ascend, the first thimble is driven to descend or ascend, the number of passing transmission elements is small, the energy loss is reduced, the production efficiency is improved, the processing and production in a factory are facilitated, and the efficiency is improved for users.

Drawings

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

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a cut-away view of the utility model in an open mold.

Fig. 3 is a cut-away view of the present utility model in mold closing.

Fig. 4 is a schematic structural view of the male mold core.

Fig. 5 is another cut-away view of the present utility model when opened.

Fig. 6 is a schematic structural view of the connecting rod.

Wherein, each reference sign in the figure:

the upper die 100, the injection hole 101, the female die core 102, the first upper die 110, the second upper die 120, the rotating shaft 130, the connecting rod 131, the locking piece 132, the locking groove 133, the sliding piece 140,

Lower die 200, male die core 201, connecting cavity 210, first through hole 211, second through hole 212, spring 220, chute 230, limiting block 240,

A top 300, a connecting seat 301, a first thimble 302, a second thimble 303, an inclined surface 304,

A mold cavity 400, an injection molding 410.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to illustrate embodiments of the utility model and should not be construed as limiting the utility model.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify 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.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably 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 embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In one embodiment of the present utility model, as shown in fig. 1 to 5, there is provided a mold for molding a silicone product, which is easy to be demolded, comprising an upper mold 100 and a lower mold 200, wherein the upper mold 100 forms a cavity 400 between the upper mold 100 and the lower mold 200 by closing the mold, and a silicone product having a specific shape is produced by injecting a raw material into the cavity 400 and shaping the raw material. The upper mold 100 includes a female mold core 102. The upper mold 100 is slidably coupled to the top surface of the lower mold 200, and the upper mold 100 is slid on the surface of the lower mold 200 to complete mold closing and opening. The lower mold 200 is provided with a connecting cavity 210, the connecting cavity 210 is used for connecting the elements ejecting the injection molding piece 410, the top of the connecting cavity 210 is provided with a male mold core 201, and the shape and the position of the male mold core 201 correspond to those of the female mold core 102.

Specifically, the connecting cavity 210 includes a first through hole 211 extending to the top surface of the male die core 201, and a second through hole 212 extending to the top surface of the lower die 200, and the first through hole 211 and the second through hole 212 may be cylinders or prisms. The connecting cavity 210 is elastically connected with the ejector 300, the ejector 300 comprises a first ejector pin 302 penetrating through the first through hole 211 and a second ejector pin 303 penetrating through the second through hole 212, and the ejector 300 can elastically ascend or descend in the connecting cavity 210 and drive the first ejector pin 302 and the second ejector pin 303 to ascend or descend simultaneously.

Further, when the upper die 100 is clamped and abutted against the second ejector pin 303, the top surface of the first ejector pin 302 is driven to descend to be flush with the top surface of the male die core 201, and at this time, the inner wall of the female die core 102, the outer wall of the male die core 201 and the top surface of the first ejector pin 302 are jointly enclosed to form a die cavity 400; when the upper mold 100 is opened and the second ejector pin 303 is released from contact, the tip of the first ejector pin 302 is elastically pushed out of the first through hole 211, and the injection mold 410 is separated from the punch core 201. The top surface of the upper mold 100 is provided with a material injection hole 101 communicated with the mold cavity 400.

Preferably, as shown in fig. 2 and 4, in the mold-open state, the top end of the second ejector pin 303 extends out of the second through hole 212, so that the upper mold 100 abuts against the second ejector pin 303 and applies a downward force to the second ejector pin 303.

In another embodiment, in the open mold state, the top end of the second ejector pin 303 is placed in the second through hole 212, and a groove (not shown in the drawing) is provided in the bottom surface of the upper mold 100, and an elastic member is provided in the groove. When the upper mold 100 slides on the top surface of the lower mold 200 and the groove corresponds to the top of the second through hole 212, the elastic member elastically stretches into the second through hole 212 and abuts against the top of the second ejector pin 303, so as to apply downward pressure to the second ejector pin 303, and lower the second ejector pin 303.

Compared with the prior art, the technical scheme or schemes in the easy-to-demould silica gel product forming die provided by the embodiment of the utility model at least have one of the following technical effects:

1. when the mold is closed, the upper mold 100 is abutted against the second ejector pin 303, the second ejector pin 303 drives the top surface of the first ejector pin 302 to descend to be flush with the top surface of the male mold core 201, at the moment, the inner wall of the female mold core 102, the outer wall of the male mold core 201 and the top surface of the first ejector pin 302 are jointly enclosed to form a mold cavity 400, the top surface of the upper mold 100 is provided with a material injection hole 101 communicated with the mold cavity 400, and raw materials are injected into the material injection hole 101 for injection molding; when the mold is opened, the upper mold 100 is released from abutting the second ejector pin 303, so that the top end of the first ejector pin 302 is driven to elastically eject out of the first through hole 211, and meanwhile, the injection molding piece 410 is driven to be separated from the male mold core 201, so that the structure is simple, and the injection molding piece 410 is convenient to be demolded.

In the process of die assembly and die opening, the second thimble 303 is stressed to descend or ascend, the first thimble 302 is driven to descend or ascend, the number of passing transmission elements is small, the energy loss is reduced, the production efficiency is improved, the processing and production in a factory are facilitated, and the efficiency is improved for users.

Further, the upper mold 100 includes a first upper mold 110 and a second upper mold 120. The first upper die 110 and the second upper die 120 are slidably coupled to the top surface of the lower die 200; as shown in fig. 3, during mold closing, the first upper mold 110 and the second upper mold 120 are close to each other and then are tightly attached to each other, the inner side wall of the first upper mold 110 and the inner side wall of the second upper mold 120 are both provided with the female mold core 102, and at this time, the inner wall of the female mold core 102, the outer wall of the male mold core 201, and the top surface of the first ejector pin 302 jointly enclose a mold cavity 400. As shown in fig. 2, when the molds are opened, the first upper mold 110 and the second upper mold 120 are slid in opposite directions, respectively, to be separated from each other, exposing the injection mold 410 for the subsequent demolding.

Further, as shown in fig. 4 and 5, the bottom surface of the first upper mold 110 and the bottom surface of the second upper mold 120 are both provided with a sliding member 140, the top surface of the lower mold 200 is provided with two sliding grooves 230, and the two sliding members 140 are respectively and correspondingly connected to the two sliding grooves 230 in a sliding manner, so that the first upper mold 110 and the second upper mold 120 can slide on the top surface of the lower mold 200, and the first upper mold 110 and the second upper mold 120 can be conveniently close to each other or separate from each other when the molds are closed.

Further, as shown in fig. 4, two ends of the sliding groove 230 extend to the left and right sides of the lower mold 200, respectively, when the first upper mold 110 and the second upper mold 120 slide on the surface of the lower mold 200, they can be detached from the two openings of the sliding groove 230 on the left and right sides of the lower mold 200, respectively, so as to facilitate the user to replace the upper mold 100 or the lower mold 200.

In another embodiment of the present utility model, as shown in fig. 4, a limiting block 240 is protruded from the top surface of the lower mold 200, and a limiting position (not shown) is provided on one surface of the first upper mold 110 and the second upper mold 120, which are close to each other. When the mold is closed, the two limiting positions are respectively abutted against two sides of the limiting block 240, so that the first upper mold 110 and the second upper mold 120 slide to the working positions, and the inner wall of the female mold core 102, the outer wall of the male mold core 201 and the top surface of the first ejector pin 302 are jointly enclosed to form the mold cavity 400.

In another embodiment of the present utility model, as shown in fig. 1 and 6, a connecting rod 131 is disposed on an outer sidewall of the first upper mold 110, a locking member 132 is disposed at one end of the connecting rod 131, a locking groove 133 is disposed on an outer sidewall of the second upper mold 120, and the locking member 132 is adapted to be inserted into the locking groove 133, so that the first upper mold 110 is tightly attached to the second upper mold 120 and is not easily separated from the second upper mold 120, thereby improving connection tightness between the two upper molds, and ensuring a more stable structure between components during injection molding.

Further, the connecting rod 131 is rotatably connected to the first upper die 110 through the rotating shaft 130, and the user can insert the locking member 132 into the locking groove 133 by rotating the connecting rod 131, so that the operation is convenient. Specifically, the locking member 132 is vertically disposed below the connecting rod 131, and the notch of the locking groove 133 is upward, so that the locking member 132 is inserted downward into the locking groove 133 when in use, so that the first upper die 110 is tightly attached to the second upper die 120.

In other embodiments, the top surface of the second ejector pin 303 is an inclined surface 304, and the side on the upper surface of the inclined surface 304 is close to the male mold core 201. When the upper die 100 slides on the top surface of the lower die 200 and approaches the second through hole 212, the bottom of the upper die 100 abuts against the inclined surface 304 and applies a force to the inclined surface 304, so that the second ejector pin 303 descends to drive the first ejector pin 302 to descend.

In another embodiment of the present utility model, the bottom of the first thimble 302 is connected with the bottom of the second thimble 303 by the connection seat 301, and the first thimble 302, the second thimble 303 and the connection seat 301 are integrally formed, so that the connection of the three is tight, and meanwhile, the structure is simple, and the production and the processing are convenient. .

In another embodiment of the present utility model, the bottom surface of the top 300 is connected to the bottom surface of the connection chamber 210 by the spring 220 so that the top 300 can be elastically raised and lowered with respect to the lower mold 200.

The rest of the present embodiment is the same as the first embodiment, and the unexplained features in the present embodiment are all explained by the first embodiment, and are not described here again.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. For those skilled in the art, the architecture of the utility model can be flexible and changeable without departing from the concept of the utility model, and serial products can be derived. But a few simple derivatives or substitutions should be construed as falling within the scope of the utility model as defined by the appended claims.

Claims (10)

1. A silica gel product forming die easy to demould comprises an upper die (100) and a lower die (200); characterized in that the upper mould (100) comprises a female mould core (102); the upper die (100) is slidably connected to the top surface of the lower die (200), a connecting cavity (210) is arranged in the lower die (200), a convex die core (201) is arranged at the top of the connecting cavity (210), and the connecting cavity (210) comprises a first through hole (211) extending to the top surface of the convex die core (201) and a second through hole (212) extending to the top surface of the lower die (200); a top piece (300) is elastically connected in the connecting cavity (210), and the top piece (300) comprises a first thimble (302) penetrating through the first through hole (211) and a second thimble (303) penetrating through the second through hole (212); when the upper die (100) is clamped and abutted against the second ejector pin (303), the top surface of the first ejector pin (302) is driven to descend to be flush with the top surface of the male die core (201), and at the moment, a die cavity (400) is formed by surrounding the inner wall of the female die core (102), the outer wall of the male die core (201) and the top surface of the first ejector pin (302); when the upper die (100) is opened and is not in contact with the second ejector pin (303), the top end of the first ejector pin (302) is elastically ejected out of the first through hole (211); the top surface of the upper die (100) is provided with a material injection hole (101) communicated with the die cavity (400).

2. The mold for molding easily released silicone articles according to claim 1, wherein said upper mold (100) comprises a first upper mold (110) and a second upper mold (120); the first upper die (110) and the second upper die (120) are connected to the top surface of the lower die (200) in a sliding manner; the inner side wall of the first upper die (110) and the inner side wall of the second upper die (120) are both provided with the female die core (102).

3. The molding die for easily demolding silica gel products according to claim 2, wherein a sliding member (140) is disposed on the bottom surface of the first upper die (110) and the bottom surface of the second upper die (120), two sliding grooves (230) are disposed on the top surface of the lower die (200), and the two sliding members (140) are respectively slidably connected to the two sliding grooves (230).

4. The molding die for easily demolding silica gel products according to claim 3, wherein both ends of the chute (230) are extended to the left and right sides of the lower die (200), respectively, so that the first upper die (110) and the second upper die (120) can be detached from the lower die (200).

5. A silica gel product forming mold easy to release according to claim 3, wherein a limiting block (240) is convexly arranged on the top surface of the lower mold (200), and a limiting position is arranged on one surface of the first upper mold (110) and one surface of the second upper mold (120) which are close to each other; when the mold is closed, the two limiting positions are respectively abutted against two sides of the limiting block (240).

6. The molding die for easily demolding silica gel products according to claim 2, wherein a connecting rod (131) is arranged on the outer side wall of the first upper die (110), and a locking piece (132) is arranged at one end of the connecting rod (131); the outer side wall of the second upper die (120) is convexly provided with a locking groove (133), and the locking piece (132) is adaptively inserted into the locking groove (133), so that the first upper die (110) is tightly attached to the second upper die (120).

7. The mold for molding silicone articles easy to release according to claim 6, wherein said connecting rod (131) is rotatably connected to said first upper mold (110) by a rotation shaft (130).

8. The molding die for easily demolding silica gel products according to any one of claims 1 to 7, wherein the top surface of the second ejector pin (303) is an inclined surface (304), and the side of the inclined surface (304) higher is close to the male die core (201).

9. The molding die for easily demolding silica gel products according to any one of claims 1 to 7, wherein the bottom of the first ejector pin (302) is connected with the bottom of the second ejector pin (303) by a connecting seat (301); the first thimble (302), the second thimble (303) and the connecting seat (301) are of an integrated structure.

10. The mold for molding easily releasable silicone articles according to any one of claims 1 to 7, wherein the bottom surface of the top member (300) is connected to the bottom surface of the connecting cavity (210) with a spring (220).