CN202656417U - A two-color mold with improved glue-feeding structure - Google Patents

Abstract

The utility model relates to the technical field of two-color molds, and in particular to a two-color mold with an improved glue feeding structure, including a two-color mold body, the two-color mold body including a male mold and a female mold used in conjunction with the male mold, a mold cavity is arranged on the top of the female mold, the male mold is provided with a hot runner for hard glue injection molding, the female mold is provided with a side glue feeding channel for soft glue injection molding, the hot runner and the side glue feeding channel are respectively connected to the mold cavity, and an ejection structure used in conjunction with the mold cavity is arranged below the female mold. When in use, the hard glue layer of the product is first injected through the hot runner, and then injected through the side glue feeding channel to form the soft glue layer of the product on the hard glue of the product. The hard glue and the soft glue are injected through different flow channels respectively to ensure the balance of the mold injection and improve the qualified rate of the injection molded products.

Description

A two-color mold with improved glue-feeding structure

technical field

The utility model relates to the technical field of two-color molds, in particular to a two-color mold with an improved glue-feeding structure.

Background technique

In the production process of injection molded products, injection molds are currently widely used. Due to technical limitations, the previous mold products were mostly single-color production, that is, only one plastic raw material can be used for injection molding. The appearance of the products produced in this way is not rich enough in terms of material or color. The appearance requirements are getting higher and higher, especially for automotive accessories, such as storage boxes, etc. It has become a current trend to pursue more exquisite, fashionable and personalized mold products.

However, most of the existing two-color molds use a single glue inlet to feed the glue. If the soft glue is unbalanced and the soft glue is biased to one side during injection molding, it is easy to cause the hard rubber ribs used for molding in the mold cavity to be compressed and bent. On the other side, the glue feeding of the mold is unbalanced, resulting in a low pass rate of the injection molded product and affecting the appearance of the product.

Contents of the invention

The purpose of the utility model is to provide a two-color mold with an improved glue-feeding structure with balanced glue-feeding and high product pass rate aiming at the deficiencies of the prior art.

The purpose of this utility model is achieved through the following technical measures.

Provided is a two-color mold with improved glue feeding structure, including a two-color mold body, the two-color mold body includes a male mold and a female mold used in conjunction with the male mold, a mold cavity is provided on the top of the female mold, and hard glue is provided on the male mold A hot runner for injection molding, the mother mold is provided with a side-inlet glue runner for soft rubber injection, the hot runner and the side-inlet glue runner are respectively connected to the mold cavity, and the bottom of the mother mold is provided with An ejection structure for use with the cavity.

The utility model includes the following further technical solutions.

Wherein, the side-inlet glue flow channel includes a main channel and three branch channels, one end of the three branch channels is respectively connected with the main channel, and the other ends of the three branch channels are respectively connected with the mold cavity.

Wherein, the mold cavity includes a first cavity and a second cavity, ribs are arranged between the first cavity and the second cavity, and the three branch channels respectively communicate with the first cavity, the second cavity and the rib.

Wherein, throttling valves are respectively arranged at the joints of the three branch channels and the main channel.

Wherein, the three branch runners are located on the same side of the mold cavity.

As above, overflow wells are provided on the periphery of the mold cavity.

Wherein, the overflow well includes a connecting piece and an ejector block, the ejector block is connected to the bottom surface of the connecting piece, and the connecting piece is connected to the mold cavity.

Wherein, the ejector structure includes ejector pins and a power mechanism for driving the ejector pins, and the ejector pins are correspondingly arranged under each of the overflow wells.

Wherein, the bottom of the master mold is provided with a pulling rod, and the pulling rod is used in conjunction with the side-feeding glue flow channel.

Wherein, a telescopic positioning rod is arranged between the male die and the female die.

The beneficial effect of the utility model is: a two-color mold with improved glue feeding structure, including a two-color mold body, the two-color mold body includes a male mold and a female mold used in conjunction with the male mold, the top of the female mold is provided with a mold cavity, the The male mold is provided with a hot runner for hard rubber injection molding, and the female mold is provided with a side-inlet rubber runner for soft rubber injection. An ejection structure used in conjunction with the mold cavity is arranged under the mother mold. When in use, the hard rubber layer of the product is injected through the hot runner first, and then the rubber is fed through the side-injected flow channel, and the soft rubber layer of the product is formed on the hard rubber of the product. The hard rubber and the soft rubber are injected through different flow channels. , to ensure the balance of mold feeding, and improve the qualified rate of injection molding products.

Description of drawings

The utility model is further described by using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present utility model.

Fig. 1 is a kind of structural representation of the utility model.

Fig. 2 is a schematic diagram of an exploded structure of the utility model.

Fig. 3 is another structural diagram of the utility model.

Fig. 4 is a schematic side view of the utility model.

In Figure 1, Figure 2, Figure 3 and Figure 4 include:

1——Male model 11——Hot runner

2——Mother mold 21——Cavity

211—the first cavity 212—the second cavity

213——rib 3——side glue runner

31——Main channel 32——Branch channel

4——thimble 5——throttle valve

6——overflow well 61——connecting piece

7——Pull rod 8——Positioning rod.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further, and this is the preferred embodiment of the utility model.

Embodiment one.

As shown in Figures 1 to 4, a two-color mold with improved glue feeding structure in this embodiment includes a two-color mold body. The two-color mold body includes a male mold 1 and a female mold 2 used in conjunction with the male mold 1. The female mold The top of the mold 2 is provided with a mold cavity 21, the male mold 1 is provided with a hot runner 11 for injection molding of hard rubber, and the female mold 2 is provided with a side-inlet runner 3 for injection molding of soft rubber, and the hot runner 11 and The side-feeding glue channels 3 communicate with the mold cavity 21 respectively, and an ejection structure cooperating with the mold cavity 21 is provided under the mother mold 2 . Wherein, the side-feeding glue channel 3 includes a main channel 31 and three branch channels 32, one end of the three branch channels 32 communicates with the main channel 31 respectively, and the other end of the three branch channels 32 communicates with the mold respectively. The cavity 21 communicates. Wherein, the mold cavity 21 includes a first cavity 211 and a second cavity 212, a rib 213 is arranged between the first cavity 211 and the second cavity 212, and the three branch channels 32 communicate with the first cavity respectively. Body 211 , second cavity 212 and ribs 213 .

When in use, the male mold 1 and the female mold 2 are relatively closed first, and the molten hard glue is injected from the glue inlet of the hot runner 11, and the molten hard glue enters the mold cavity 21 of the female mold 2 to form a product hard glue layer. Then the male mold 1 and the female mold 2 are relatively opened, and the molten soft glue is injected into the glue inlet of the main channel 31 of the side glue flow channel 3, and the molten soft glue is injected into the mold cavity 21 corresponding to the first mold cavity through three branch channels 32. The positions of the first cavity 211, the second cavity 212 and the ribs 213 form a product soft rubber layer on the product hard rubber layer, and after the soft rubber cools down, the product injection molding is completed. After the injection molding is completed, the product is ejected out of the mold cavity 21 by using the ejection structure, so that the product can be taken out conveniently. The hard rubber and the soft rubber are injected through different flow channels to ensure the balance of the mold feeding, which is beneficial to avoid the soft rubber being biased to one side during injection molding, thereby effectively preventing the hard rubber ribs of the mold cavity 21 from being compressed and broken Bend to the other side, improve the qualified rate of injection molding products, and the product appearance quality is good.

Throttle valves 5 are respectively provided at the joints of the three branch channels 32 and the main channel 31 in this embodiment, which is convenient for accurately controlling the glue feeding amount and glue feeding speed of the three branch channels 32, and is beneficial to control the ribs 213 The glue feeding on both sides is balanced to enhance the injection molding effect of the utility model.

The three branch channels 32 in this embodiment are all located on the same side of the mold cavity 21, which is convenient for processing and molding, reduces the flow channel length of the branch channels 32, increases the feeding speed of the soft rubber, and improves the injection molding effect and production efficiency.

The bottom of the master mold 2 in this embodiment is provided with a pulling rod 7, and the pulling rod 7 is used in conjunction with the side-feeding glue flow channel 3. Specifically, the pulling rod 7 is movably arranged at the glue inlet of the main channel 31. When the two-color mold body is opened, the coagulation material in the main channel 31 is injected into the mold from the three branch channels 32 under the action of the pulling rod 7. In the cavity 21, ensure that the three branch channels 32 are balanced in glue.

In this embodiment, a telescopic positioning rod 8 is arranged between the male mold 1 and the female mold 2, which is convenient for the opening and closing of the two-color mold body, avoiding the deviation of the male mold 1 and the female mold 2 during the relative movement, and improving the Product reliability.

Embodiment two.

As shown in FIG. 2 and FIG. 3 , the difference between this embodiment and Embodiment 1 is that an overflow well 6 is provided on the periphery of the mold cavity 21 of this embodiment.

Since the product covering force of the two-color mold body is on the side of the master mold 2, theoretically after the mold is opened, the product will adhere to the master mold 2, which is unfavorable for the product to be taken out, so multiple overflow wells 6 are made around the product to make When the mold is opened, the overflow well 6 can hold the product to be attached to the male mold 1, which is convenient for taking out the product and improves the processing efficiency.

The overflow well 6 of this embodiment includes a connecting piece 61 and an ejector block, the ejector block is connected to the bottom surface of the connecting piece 61 , and the connecting piece 61 is connected to the mold cavity 21 . Specifically, the length of the end of the connecting piece 61 connected to the edge of the mold cavity 21 is greater than the length of the end of the connecting piece 61 away from the mold cavity 21. The block is far away from the surface area of the connecting piece 61, so that after the product is molded and ejected, the overflow well 6 can be broken off directly, which is convenient for subsequent processing, reduces processing steps, and improves processing efficiency.

The ejector structure in this embodiment includes ejector pins 4 and a power mechanism for driving the ejector pins 4 , and the ejector pins 4 are correspondingly arranged below each of the overflow wells 6 . Set the thimble 4 under the overflow well 6, and the thimble 4 can push the overflow well 6 out of the female mold 2 under the action of the power drive mechanism. At this time, the product is attached to the side of the male mold 1 together with the overflow well 6. At this time The contact part of the overflow well 6 and the thimble 4 will produce thimble marks. After the product is taken out, the overflow well 6 can be removed to avoid the thimble marks on the surface of the product and help to improve the appearance of the product.

The rest of this embodiment is the same as the first embodiment, and will not be repeated here.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art Personnel should understand that the technical solution of the utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the utility model.

Claims (10)

1. A two-color mold with improved glue-feeding structure, comprising a two-color mold body, the two-color mold body comprising a male mold and a female mold used in conjunction with the male mold, the top of the female mold is provided with a mold cavity, and it is characterized in that: the male mold The mold is provided with a hot runner for hard rubber injection, and the mother mold is provided with a side-inlet rubber runner for soft rubber injection. An ejection structure cooperating with the mold cavity is arranged under the mother mold. 2. A two-color mold with improved glue feeding structure according to claim 1, characterized in that: said side-feeding glue flow path comprises a main flow path and three branch flow paths, and one end of the three branch flow paths is connected to the main flow path respectively. channel, and the other ends of the three branch channels communicate with the mold cavity respectively. 3. A two-color mold with improved glue feeding structure according to claim 2, characterized in that: the mold cavity includes a first cavity and a second cavity, and a cavity is arranged between the first cavity and the second cavity There are ribs, and the three branch channels respectively communicate with the first cavity, the second cavity and the ribs. 4. A two-color mold with improved glue feeding structure according to claim 2, characterized in that: throttle valves are respectively arranged at the junctions of the three branch channels and the main channel. 5 . The two-color mold with improved glue feeding structure according to claim 4 , wherein the three branch channels are located on the same side of the mold cavity. 6 . 6 . The two-color mold with improved glue feeding structure according to any one of claims 1 to 5 , wherein overflow wells are arranged on the periphery of the mold cavity. 7 . 7. A two-color mold with improved glue feeding structure according to claim 6, characterized in that: the overflow well includes a connecting piece and an ejector block, and the ejector block is connected to the bottom surface of the connecting piece, and the The connecting piece is connected with the mold cavity. 8. A two-color mold with improved glue feeding structure according to claim 6, characterized in that: the ejector structure includes ejector pins and a power mechanism for driving the ejector pins, and the bottom of each overflow well corresponds to The thimble is provided. 9. A two-color mold with improved glue feeding structure according to claim 1, characterized in that: the bottom of the master mold is provided with a pull rod, and the pull rod is used in conjunction with the side feed flow channel. 10. A two-color mold with improved glue feeding structure according to claim 1, characterized in that: a telescopic positioning rod is arranged between the male mold and the female mold.

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