CN203472088U - Rib strip ejection structure above hot runner - Google Patents

Abstract

The utility model discloses a rib strip ejection structure above a hot runner. The ejection structure is arranged in a mold, wherein the mold is provided with an ejection plate as well as a male die core and a female die core for molding a product, the hot runner is arranged in the male die core, the product is provided with a rib strip, the rib strip is arranged above the hot runner, and the ejection structure comprises an ejector pin and an oblique pin, wherein one end of the ejector pin is fixed on the ejection plate, and the other end of the ejector pin is provided with a spherical connecting part; one end of the oblique pin is arranged above the hot runner and provided with a molding part which is matched with the male die core to mold the rib strip, and the other end of the oblique pin is provided with a connecting groove which is matched with the spherical connecting part. Compared with the prior art, by utilizing the rib strip ejection structure above the hot runner, the die drawing phenomenon in die sinking can be avoided. Meanwhile, a cooling water path can be avoided; by adopting the spherical connecting part, the occupied space is small, and the situation that the oblique pin and the ejector pin are fractured because the space is narrow or small when the rib strip is ejected can be avoided.

Description

Rib ejection structure above the hot glue lane

【Technical field】

The utility model relates to a rib ejection structure, in particular to a rib ejection structure above a hot glue channel. the

【Background technique】

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of the rib ejection structure above the first hot glue channel in the prior art. The male mold core 101 and the female mold core 102 of the mold are used to form a product 103, and one side of the product 103 has a rib 104, and the male mold core 101 is provided with a hot glue path 105, and the hot glue path 105 The upper position is the rib 104 . The mold is provided with ejector pins to abut on the product 103, and the ejector pins are arranged on the ejector plate, but since the ribs 104 are arranged above the hot glue channel 105, the ejector pins cannot be arranged to be directly fixed on the ribs 104 or Its vicinity, so it is easy to cause mold drawing when opening the mold. the

Please refer to FIG. 2 again. FIG. 2 is a schematic diagram of the rib ejection structure above the second hot glue channel in the prior art. The male mold core 201 and the female mold core 202 of the mold are used to form a product 203, and one side of the product 203 has a rib 204, and the male mold core 201 is provided with a hot glue path 205, and the hot glue path 205 The upper position is the rib 204 . The second ejection structure also has an oblique pin 206, one end of the oblique pin 206 is arranged in the oblique pin seat 208 of the ejector plate 207, and the other end of the oblique pin 206 avoids the hot glue channel 205 and has Cooperate with the male mold core 201 to shape the molding surface of the rib 204 . After the mold is opened, the ejector plate 207 moves to drive the oblique pin 206 to eject the rib 204 . However, the second structure has the following problems: on the one hand, the oblique pin seat 208 interferes with the hot glue channel 205; on the other hand, the oblique pin 206 is too long and weak in strength. the

Please refer to FIG. 3 again. FIG. 3 is a schematic diagram of the rib ejection structure above the third hot glue channel in the prior art. The male mold core 301 and the female mold core 302 of the mold are used to form a product 303, and one side of the product 303 has a rib 304, and the male mold core 301 is provided with a hot glue path 305, and the hot glue path 305 The upper position is the rib 304 . This third type of ejection structure also has a ejector pin 306 and an oblique pin 308, one end of the ejector pin 306 is fixed on the ejector plate 307, the oblique pin 308 is movably connected with the ejector pin 306, and the oblique pin 308 is far away from the ejector plate 307. One end of the thimble 306 avoids the hot glue channel 305 and has a molding surface that cooperates with the male core 301 to shape the rib 304 . Wherein, the thimble pin 306 and the oblique pin 308 are wider, so the strength is stronger, and because the above-mentioned thimble pin 306, the oblique pin 308 are wider, it will cause interference with the waterway 309, and if the waterway 309 is set too far, it will The cooling effect of the hot nozzle of the hot glue channel 305 is not good, resulting in overheating of the glue mouth. the

In view of this, it is necessary to provide a rib ejection structure above the hot glue channel to solve the above problems. the

【Content of invention】

Therefore, the purpose of this utility model is to provide a rib ejection structure above the hot glue path, which not only solves the problem of the withdrawal of the rib above the hot glue path, but also solves the problem that the strength of the ejection structure is not enough or interferes with the waterway. the

In order to achieve the above object, the rib ejection structure above the hot glue channel of the present utility model is provided in a mold, and the mold has an ejector plate and a male mold core and a female mold core of a formed product. There is a hot glue channel in the core, and the product has ribs, and the ribs are located above the hot glue channel. The ejection structure includes:

A thimble, one end of which is fixed to the ejector plate, and the other end of the thimble has a spherical joint;

One end of the oblique pin is located above the hot glue channel and has a forming portion that matches the male core to form the rib, and the other end of the oblique pin has a connecting groove that cooperates with the spherical connecting portion. the

Optionally, the hot glue channel has a hot nozzle, the mold also has a cooling water channel arranged around the hot nozzle, and the oblique pin is arranged between the cooling water channel and the hot glue channel. the

Optionally, the width of the oblique pin is smaller than the distance between the cooling water channel and the hot glue channel. the

Optionally, the outer diameter of the thimble pin is smaller than the width of the oblique pin. the

Compared with the prior art, using the rib ejection structure above the hot glue channel of the utility model, due to the structure of the cooperation between the thimble and the oblique pin, the oblique pin can avoid the hot runner to form the rib of the product, and When the mold is opened, the thimble drives the inclined pin to push out the ribs, which avoids the mold drawing phenomenon when the mold is opened. At the same time, due to the narrow width of the oblique pin, the cooling water path can be avoided, so that the vicinity of the hot nozzle of the hot runner can be well cooled, and the temperature will not be too high. The mating connection of the connecting groove occupies less space, and ensures that the oblique pin and the ejector pin will not be broken during ejection because they are narrow or small. the

【Description of drawings】

FIG. 1 is a schematic diagram of the rib ejection structure above the first hot glue channel in the prior art. the

FIG. 2 is a schematic diagram of the rib ejection structure above the second hot glue channel in the prior art. the

FIG. 3 is a schematic diagram of the rib ejection structure above the third hot glue channel in the prior art. the

FIG. 4 is a structural schematic diagram of a preferred embodiment of the rib ejection structure above the hot glue channel of the present invention. the

【Detailed ways】

Please refer to FIG. 4 . FIG. 4 is a structural schematic diagram of a preferred embodiment of the rib ejection structure above the hot glue channel of the present invention. the

In order to achieve the above object, the rib ejection structure above the hot glue channel of the present utility model is set in the mold, and the mold has an ejector plate 407 and a male mold core 401 and a female mold core 402 of the formed product 403 , the male mold core 401 is provided with a hot glue channel 405, the product 403 has a rib 404, and the rib 404 is located above the hot glue channel 405, and the ejection structure includes:

A thimble 406, one end of which is fixed to the ejector plate 407, and the other end of the thimble 406 has a spherical joint 410;

An oblique pin 408, one end of which is located above the hot glue channel 405 and has a forming portion that matches the male die core 401 to form the rib 404, and the other end of the oblique pin 408 has a portion that cooperates with the spherical connecting portion 410 Connection groove 411. the

Wherein, the hot glue channel 405 has a hot nozzle, and the mold also has a cooling water channel 409 arranged around the hot nozzle, and the oblique pin 408 is arranged between the cooling water channel 409 and the hot glue channel 405 , thereby avoiding the cooling water passage 409, so that the vicinity of the hot nozzle of the hot runner 405 is well cooled without the temperature being too high. the

Wherein, the width of the oblique pin 408 is smaller than the distance between the cooling water channel 409 and the hot glue channel 405 . The oblique pin 408 is a narrow structure, which can effectively avoid other structures. Correspondingly, the outer diameter of the thimble pin 406 is smaller than the width of the oblique pin 408 , and the thimble pin 406 is smaller. the

Compared with the prior art, using the rib ejection structure above the hot glue channel of the present invention, due to the structure of the cooperation between the thimble 406 and the oblique pin 408, the oblique pin 408 can avoid the hot runner 405 to form products 403 rib 404, and the thimble pin 406 drives the oblique pin 408 to push out the rib 404 when the mold is opened, which avoids the mold drawing phenomenon when the mold is opened. At the same time, due to the narrow width of the oblique pin 408, the cooling water passage 409 can be avoided, so that the vicinity of the hot nozzle of the hot runner 405 can be well cooled, and the temperature will not be too high. The mating connection between 410 and the connecting groove 411 takes up less space and enhances the strength, which ensures that the oblique pin 408 and the ejector pin 406 will not be broken during ejection due to their narrowness or small size. the

Claims (4)

1. A rib ejection structure above the hot glue path, this ejection structure is located in the mould, the mold has a male mold core and a female mold core of an ejector plate and a formed product, and a thermal mold core is provided in the male mold core. The glue channel, the product has ribs, and the ribs are located above the hot glue channel, and it is characterized in that the ejection structure includes: An ejector pin, one end of which is fixed to the ejector plate, and the other end of the ejector pin has a spherical connecting portion; One end of the oblique pin is located above the hot glue channel and has a forming portion that matches the male core to form the rib, and the other end of the oblique pin has a connecting groove that cooperates with the spherical connecting portion. 2. the rib ejection structure above the hot glue path as claimed in claim 1, wherein the hot glue path has a hot nozzle, and the mold also has a cooling water circuit arranged around the hot nozzle, and the The oblique pin is arranged between the cooling water channel and the hot glue channel. 3 . The rib ejection structure above the hot glue track according to claim 2 , wherein the width of the oblique pin is smaller than the distance between the cooling water channel and the hot glue track. 4 . 4 . The rib ejection structure above the hot glue channel according to claim 3 , wherein the outer diameter of the ejector pin is smaller than the width of the oblique pin.

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