CN219947082U - Double-colored injection mold - Google Patents

Abstract

The utility model provides a double-shot injection mold, which comprises a front mold, a front mold core, a rear mold and a rear mold core, wherein the front mold core is assembled on the front mold; the back mould has the holding tank, sets up in the through-hole of the tank bottom central point of holding tank put and set up the sensor module that targets in place at the holding tank opposite sides, the assembly of back mould benevolence liftable activity is in the holding tank of back mould, and one side of back mould benevolence be equipped with be used for with the sensor module complex that targets in place insert, wear to be equipped with the connecting axle in the through-hole of back mould, the one end of connecting axle is connected back mould benevolence, its other end is connected lift rotary actuator. The layout can be greatly simplified, the operation of the rear mold core is independently driven, the energy consumption is greatly reduced, and the circuit layout difficulty is also greatly reduced.

Description

Double-colored injection mold

Technical Field

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

Background

Double-shot molding refers to a molding process in which two different materials are injected into the same set of mold, thereby realizing that the injection molded part is formed by the two materials. Some materials are different in color, and some materials are different in hardness, so that the attractiveness, assembly and other performances of the product are improved.

In a double-shot injection mold, a first shot area and a second shot area are designed on a front mold core, and cavities of the first shot area and the second shot area are different; the back mold core is provided with a first molding area and a second molding area, and the cavities of the first molding area and the second molding area are the same. During the first mold closing operation, the first molding area and the first injection area are closed to form a first injection molding cavity, the second molding area and the second injection area are closed to form a second injection molding cavity, and the first injection molding cavity is injected for the first time; after the mold opening is completed, the product is left in a first molding area of a rear mold core, then the first molding area and the second molding area are rotated for 180 degrees, the positions of the first molding area and the second molding area are exchanged, and during the second mold closing operation, the second molding area and the first injection area are closed to form a first injection molding cavity, the first molding area and the second injection area are closed to form a second injection molding cavity, and a first injection molding product on the first molding area is positioned in the second injection molding cavity; at the moment, the first injection molding cavity and the second injection molding cavity are respectively injected, and the second injection molding cavity is used for obtaining a final product after injection molding; and the production is circulated.

Although the dual-color injection molding can be completed under the cooperation of a front mold and a pair of rear molds in the prior art, at present, the positions of a first molding area and a second molding area of a rear mold core are exchanged in a mode of integrally rotating the rear mold, so that the rear mold is driven to integrally rotate, a yielding space for the rear mold to rotate is required to be arranged, the rear mold is required to be positioned and fixed, and the front mold and the rear mold are required to be completely separated during mold opening, so that the structural layout is complex, the energy consumption is high, and the circuit layout difficulty is high.

Disclosure of Invention

To solve the above problems, the present utility model provides a two-shot injection mold.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

the double-color injection mold comprises a front mold, a front mold core, a rear mold and a rear mold core, wherein the front mold core is assembled on the front mold, the rear mold core is assembled on the rear mold, the front mold core is provided with a first injection area and a second injection area, and the rear mold core is provided with a first molding area and a second molding area; the back mould has the holding tank, sets up in the through-hole of the tank bottom central point of holding tank put and set up the sensor module that targets in place at the holding tank opposite sides, the assembly of back mould benevolence liftable activity is in the holding tank of back mould, and one side of back mould benevolence be equipped with be used for with the sensor module complex that targets in place insert, wear to be equipped with the connecting axle in the through-hole of back mould, the one end of connecting axle is connected back mould benevolence, its other end is connected lift rotary actuator.

Further, the in-place sensing module comprises a rotary in-place sensor and a lifting in-place sensor, a matching groove for matching in-place inserts is formed in the rear die, the rotary in-place sensor is arranged on the side edge of the matching groove, and the lifting in-place sensor is arranged at the bottom of the matching groove.

Further, an adjustable bolt is arranged at the bottom of the in-place insert, and when the rear die core rotates in place, the adjustable bolt corresponds to the sensing end of the in-place lifting sensor.

Further, the in-place sensing module further comprises an in-place stop block, wherein the in-place stop block is arranged on the side edge of the matching groove and is on the same side as the in-place sensor.

Further, the first molding area and the second molding area of the rear mold core are provided with molding sliding blocks, and inclined guide holes are formed in the molding sliding blocks; the two injection areas of the front mold core are provided with inclined guide rods.

Further, a lateral notch communicated with the inclined guide hole is formed in the side face of the forming sliding block, telescopic stop rods are arranged on two sides of the lateral notch, and the stop rods are provided with inclined guide faces towards the outer side of the lateral notch.

Furthermore, the front die core and the rear die core are provided with guiding matching structures, and the front die core and the rear die core are guided through the guiding matching structures when being matched.

Further, the guiding matching structure comprises a guiding column arranged on the rear die core and a guiding hole arranged on the front die core.

Further, the guiding and matching structure is provided with a plurality of groups.

The technical scheme provided by the utility model has the following beneficial effects:

the utility model has the advantages that the rear mould core is independent from the rear mould, the rear mould is fixed and maintained, the layout can be greatly simplified by pushing out the rear mould core and rotating the rear mould core, the operation of the rear mould core is independently driven, the energy consumption is greatly reduced, and the difficulty of circuit layout is also greatly reduced. Meanwhile, the in-place insert of the rear die core is matched with the in-place sensing modules on two opposite sides of the accommodating groove, so that in-place sensing can be well performed, and switching operation is more accurate.

Drawings

FIG. 1 is a schematic diagram showing an assembly structure of a front mold and a front mold insert in a dual-color injection mold according to an embodiment;

fig. 2 is a schematic diagram showing an assembly structure of a rear mold and a rear mold insert in a two-shot injection mold according to an embodiment;

FIG. 3 is an enlarged schematic view of area A of FIG. 2;

FIG. 4 is an enlarged schematic view of region B of FIG. 2;

fig. 5 is a schematic diagram showing an assembly structure of a rear mold and a rear mold insert in a two-shot injection mold according to the second embodiment;

FIG. 6 is an enlarged schematic view of region C of FIG. 5;

FIG. 7 is a cross-sectional view showing the structure of a rear mold and a rear mold insert in a two-shot injection mold according to an embodiment;

fig. 8 is a cross-sectional view showing a structure in which the rear mold insert is pushed out of the receiving groove of the rear mold in the embodiment.

Detailed Description

For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.

The utility model will now be further described with reference to the drawings and detailed description.

Referring to fig. 1 to 8, the present embodiment provides a dual-color injection mold, which includes a front mold 11, a front mold core 20 assembled on the front mold 11, a rear mold 12, and a rear mold core 30 assembled on the rear mold 12, wherein the front mold core 20 has a first shot region 201 and a second shot region 202, and specifically, cavities of the first shot region 201 and the second shot region 202 are different. The rear mold insert 30 has a first molding area 301 and a second molding area 302; the cavities of the first molding zone 301 and the second molding zone 302 are identical.

The rear mold 12 has a receiving groove 121, a through hole formed in the center of the bottom of the receiving groove 121, and in-place sensing modules 40 disposed on two opposite sides (such as left and right sides) of the receiving groove 121, specifically, the in-place sensing modules 40 are used for sensing whether the rear mold core 12 rotates in place or not and whether the rear mold core falls back into the receiving groove 121 in place or not, the rear mold core 30 is assembled in the receiving groove 121 of the rear mold 12 in a lifting manner, one side of the rear mold core 30 is assembled with an in-place insert 31 for being matched with the in-place sensing modules 40, a connecting shaft 60 is arranged in the through hole of the rear mold core 12 in a penetrating manner, one end of the connecting shaft 60 is connected with the rear mold core 30, and the other end of the connecting shaft 60 is connected with a lifting rotary driver.

When the positions of the first molding area 301 and the second molding area 302 need to be changed, the lifting and rotating driver pushes the rear mold insert 30 out first, and pushes the rear mold insert 30 up to the state shown in fig. 8 in the state shown in fig. 7, so that the rear mold insert 30 is separated from the receiving groove 121. And then the rear mold insert is driven to rotate 180 degrees, so that the positions of the first molding area 301 and the second molding area 302 are exchanged, after the rotation is completed, the rear mold insert 30 is pulled back again, and the rear mold insert 30 falls back into the accommodating groove 121 again, so that the positions of the first molding area 301 and the second molding area 302 are exchanged only by driving the rear mold insert 30, the double-color injection molding is completed, the layout can be greatly simplified, the energy consumption is reduced, the rear mold 12 does not need to rotate, and the circuit layout difficulty is also greatly reduced. Meanwhile, the in-place sensing (namely, the in-place sensing by rotation and the sensing by falling back into the accommodating groove) can be well performed by matching the in-place insert 31 of the rear mold insert 30 with the in-place sensing modules 40 on two opposite sides of the accommodating groove 121, so that the switching operation is more accurate.

Specifically, the lifting and rotating driver is a driving device capable of driving lifting, moving and rotating, and may be a combination of a lifting cylinder and a rotating cylinder, or may be a lifting and rotating cylinder directly.

Specifically, the in-place sensor module 40 includes a rotation in-place sensor 41 and a lifting in-place sensor 42, the back mold 12 is provided with a matching groove 122 for matching the in-place insert 31, the rotation in-place sensor 41 is disposed at a side edge of the matching groove 122, and the lifting in-place sensor 42 is disposed at a bottom of the matching groove 122. So set up, in initial condition, as shown in fig. 7, in the mating groove 122 on the left side of the insert 31 in place, when the back insert 30 is pushed out and rotated 180 °, the insert 31 in place turns to the right from the left, and triggers the sensor 41 on the right side to rotate in place, the sensor 41 on the right side rotates in place to transmit the signal outwards, and indicates that the back insert 30 rotates in place, then, after the back insert 30 falls back into the accommodating groove 121, the insert 31 in place falls into the mating groove 122 on the right side, and triggers the sensor 42 on the right side to lift in place after falling back in place, and the sensor 42 on the right side lifts in place to transmit the signal outwards, indicating that the back insert 30 falls back in place. Specifically, when the rear mold insert 30 rotates from right to left, the in-place insert 31 is also engaged with the in-place sensor module 40 on the left side in the above-mentioned engagement manner, and the description thereof will not be repeated.

More specifically, an adjustable bolt 311 is disposed at the bottom of the in-place insert 31, and when the rear mold insert 30 rotates in place, the adjustable bolt 311 corresponds to the sensing end of the up-down in-place sensor 42. So configured, when a deviation occurs in the position of the in-place insert 31, it is possible to compensate by adjusting the position of the adjustable bolt 311.

In further detail, the in-place sensor module 40 further includes an in-place stopper 43, and the in-place stopper 43 is disposed at a side of the fitting groove 122 and at the same side as the rotation in-place sensor 41. Namely, the left side and the right side are both provided with the in-place stop blocks 43, when the rear die core 30 rotates in place, the in-place insert 31 is blocked and limited by the in-place stop blocks 43, so that the in-place rotating sensor 41 is prevented from being impacted by the in-place insert 31 due to the excessive rotation of the rear die core 30, the position of the rear die core 30 after rotating can be well positioned, and the in-place rotating sensor 41 is protected.

The structural arrangement described above for the in-place sensing module 40 is one of the preferred modes of the present utility model. Of course, in other embodiments, the component composition and layout structure of the in-place sensor module 40 are not limited to this, for example, the in-place rotation sensor 41 and the in-place lifting sensor 42 may be arranged at other positions, so long as the in-place rotation and the falling of the in-place insert 31 can be sensed cooperatively, or the in-place stop block 43 may not be adopted.

Specifically, in this embodiment, the first molding area 301 and the second molding area 302 of the rear mold insert 30 each have a molding slide 33, and the lateral sliding of the molding slide 33 is used for releasing the product during mold opening. The forming slide block 33 is provided with an inclined guide hole 331; the two shot areas 202 of the front mold core 20 are provided with inclined guide rods 21. So set up, when the first shaping area 301 or the second shaping area 302 of the back mold insert 30 cooperates with the two shot area 202 of the front mold insert 20, the inclined guide rod 21 of the two shot area 202 can be inserted into the inclined guide hole 331 of the shaping slide 33, and when the mold is opened, the shaping slide 33 slides laterally under the driving of the inclined guide rod 21 to release the product.

In this embodiment, since the product does not need to be demolded during the injection operation, the inclined guide bar 21 is not provided in the injection area 201.

More specifically, the side surface of the forming slider 33 is provided with a lateral notch 332 that communicates with the inclined guide hole 331, two sides of the lateral notch 332 are provided with a retractable stop lever 50, and the stop lever 50 has an inclined guide surface 51 facing the outer side of the lateral notch 332. When the first molding area 301 or the second molding area 302 of the rear mold core 30 is matched with the two shot area 202 of the front mold core 20, the inclined guide rod 21 is inserted into the inclined guide hole 331 from the lateral notch 332 of the molding slide 33, and in the process, the inclined guide rod 21 abuts against the inclined guide surface 51 of the stop lever 50, so that the stop lever 51 is driven to retract and abdy, and the inclined guide rod 21 is smoothly inserted; when the mold is opened, the inclined guide rod 21 is separated to be abutted against the inner side of the stop lever 50 (i.e. the side away from the lateral notch 332), and the inner side of the stop lever 50 is not provided with the inclined guide surface 51, so that the stop lever 50 cannot retract to be in a yielding position, and the molding slide 33 is driven to move laterally. The structural design is ingenious and simple. Of course, in other embodiments, the structural design of the molding slider 33 is not limited thereto.

Further, in order to ensure that the front mold insert 20 and the rear mold insert 30 can be accurately clamped, in this embodiment, the front mold insert 20 and the rear mold insert 30 are provided with guiding and matching structures, and the front mold insert 20 and the rear mold insert 30 are guided by the guiding and matching structures when clamped; thus, the front mold core 20 and the rear mold core 30 are precisely clamped.

Specifically, the guiding and matching structure includes a guiding post 32 disposed on the rear mold core 30 and a guiding hole 22 disposed on the front mold core 20; in this embodiment, the guiding and matching structure is provided with multiple groups (specifically two groups), that is, the number of the guiding posts 32 on the rear mold core 30 is two, and the number of the guiding holes 22 on the front mold core 20 is also two, so that the guiding and matching structure is simple in structure and easy to realize when the guiding posts 32 of the rear mold core 30 are inserted into the guiding holes 22 of the front mold core 20 during mold closing. Of course, in other embodiments, the guiding structure is not limited thereto, and the guiding hole may be formed on the rear mold core 30, the guiding post may be formed on the front mold core 20, etc.

Also, a guide matching structure of a guide post and a guide bush is provided between the front mold 11 and the rear mold 12, which is a conventional art and will not be described in detail herein.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (9)

1. The double-color injection mold comprises a front mold, a front mold core, a rear mold and a rear mold core, wherein the front mold core is assembled on the front mold, the rear mold core is assembled on the rear mold, the front mold core is provided with a first injection area and a second injection area, and the rear mold core is provided with a first molding area and a second molding area; the method is characterized in that:

the back mould has the holding tank, sets up in the through-hole of the tank bottom central point of holding tank put and set up the sensor module that targets in place at the holding tank opposite sides, the assembly of back mould benevolence liftable activity is in the holding tank of back mould, and one side of back mould benevolence be equipped with be used for with the sensor module complex that targets in place insert, wear to be equipped with the connecting axle in the through-hole of back mould, the one end of connecting axle is connected back mould benevolence, its other end is connected lift rotary actuator.

2. The two-shot injection mold of claim 1, wherein: the in-place sensing module comprises a rotary in-place sensor and a lifting in-place sensor, a matching groove for matching with the in-place insert is formed in the rear die, the rotary in-place sensor is arranged on the side edge of the matching groove, and the lifting in-place sensor is arranged at the bottom of the matching groove.

3. The dual-color injection mold of claim 2, wherein: the bottom of the in-place insert is provided with an adjustable bolt, and when the rear die core rotates in place, the adjustable bolt corresponds to the induction end of the lifting in-place sensor.

4. The dual-color injection mold of claim 2, wherein: the in-place sensing module further comprises an in-place stop block, and the in-place stop block is arranged on the side edge of the matching groove and is on the same side as the rotary in-place sensor.

5. The two-shot injection mold of claim 1, wherein: the first forming area and the second forming area of the rear mold core are respectively provided with a forming sliding block, and the forming sliding blocks are provided with inclined guide holes; the two injection areas of the front mold core are provided with inclined guide rods.

6. The two-shot injection mold of claim 5, wherein: the side of shaping slider has offered the side breach of intercommunication slope guiding hole, the both sides of side breach are provided with telescopic pin, the pin has the slope guiding surface towards the outside of side breach.

7. The two-shot injection mold of claim 1, wherein: the front die core and the rear die core are provided with guiding matching structures, and the front die core and the rear die core are guided through the guiding matching structures when being matched.

8. The two-shot injection mold of claim 7, wherein: the guide matching structure comprises a guide column arranged on the rear die core and a guide hole arranged on the front die core.

9. The two-shot injection mold according to claim 7 or 8, characterized in that: the guide matching structure is provided with a plurality of groups.